diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 18:03:51 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-05-04 18:03:51 -0700 |
| commit | 8f28472a739e8e39adc6e64ee5b460df039f0e4f (patch) | |
| tree | 979e35f3d1d2be94c06c942bcdc9ee68cbebaacb /drivers | |
| parent | 4ac4d584886a4f47f8ff3bca0f32ff9a2987d3e5 (diff) | |
| parent | c034a43e72dda58e4a184d71f5502ef356e04453 (diff) | |
| download | linux-8f28472a739e8e39adc6e64ee5b460df039f0e4f.tar.bz2 | |
Merge tag 'usb-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb
Pull USB updates from Greg KH:
"Here is the big USB patchset for 4.12-rc1.
Lots of good stuff here, after many many many attempts, the kernel
finally has a working typeC interface, many thanks to Heikki and
Guenter and others who have taken the time to get this merged. It
wasn't an easy path for them at all.
There's also a staging driver that uses this new api, which is why
it's coming in through this tree.
Along with that, there's the usual huge number of changes for gadget
drivers, xhci, and other stuff. Johan also finally refactored pretty
much every driver that was looking at USB endpoints to do it in a
common way, which will help prevent any "badly-formed" devices from
causing problems in drivers. That too wasn't a simple task.
All of these have been in linux-next for a while with no reported
issues"
* tag 'usb-4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (263 commits)
staging: typec: Fairchild FUSB302 Type-c chip driver
staging: typec: Type-C Port Controller Interface driver (tcpci)
staging: typec: USB Type-C Port Manager (tcpm)
usb: host: xhci: remove #ifdef around PM functions
usb: musb: don't mark of_dev_auxdata as initdata
usb: misc: legousbtower: Fix buffers on stack
USB: Revert "cdc-wdm: fix "out-of-sync" due to missing notifications"
usb: Make sure usb/phy/of gets built-in
USB: storage: e-mail update in drivers/usb/storage/unusual_devs.h
usb: host: xhci: print correct command ring address
usb: host: xhci: delete sp_dma_buffers for scratchpad
usb: host: xhci: using correct specification chapter reference for DCBAAP
xhci: switch to pci_alloc_irq_vectors
usb: host: xhci-plat: set resume_quirk() for R-Car controllers
usb: host: xhci-plat: add resume_quirk()
usb: host: xhci-plat: enable clk in resume timing
usb: host: plat: Enable xHCI plat runtime PM
USB: serial: ftdi_sio: add device ID for Microsemi/Arrow SF2PLUS Dev Kit
USB: serial: constify static arrays
usb: fix some references for /proc/bus/usb
...
Diffstat (limited to 'drivers')
194 files changed, 14364 insertions, 3701 deletions
diff --git a/drivers/Makefile b/drivers/Makefile index 2eced9afba53..8f8bdc9e3d29 100644 --- a/drivers/Makefile +++ b/drivers/Makefile @@ -104,6 +104,7 @@ obj-$(CONFIG_USB_PHY) += usb/ obj-$(CONFIG_USB) += usb/ obj-$(CONFIG_PCI) += usb/ obj-$(CONFIG_USB_GADGET) += usb/ +obj-$(CONFIG_OF) += usb/ obj-$(CONFIG_SERIO) += input/serio/ obj-$(CONFIG_GAMEPORT) += input/gameport/ obj-$(CONFIG_INPUT) += input/ diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 005cadb7a3f8..afaf7b643eeb 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -439,6 +439,25 @@ config PHY_STIH407_USB Enable this support to enable the picoPHY device used by USB2 and USB3 controllers on STMicroelectronics STiH407 SoC families. +config PHY_QCOM_QMP + tristate "Qualcomm QMP PHY Driver" + depends on OF && COMMON_CLK && (ARCH_QCOM || COMPILE_TEST) + select GENERIC_PHY + help + Enable this to support the QMP PHY transceiver that is used + with controllers such as PCIe, UFS, and USB on Qualcomm chips. + +config PHY_QCOM_QUSB2 + tristate "Qualcomm QUSB2 PHY Driver" + depends on OF && (ARCH_QCOM || COMPILE_TEST) + depends on NVMEM || !NVMEM + select GENERIC_PHY + help + Enable this to support the HighSpeed QUSB2 PHY transceiver for USB + controllers on Qualcomm chips. This driver supports the high-speed + PHY which is usually paired with either the ChipIdea or Synopsys DWC3 + USB IPs on MSM SOCs. + config PHY_QCOM_UFS tristate "Qualcomm UFS PHY driver" depends on OF && ARCH_QCOM diff --git a/drivers/phy/Makefile b/drivers/phy/Makefile index dd8f3b5d2918..f8047b4639fa 100644 --- a/drivers/phy/Makefile +++ b/drivers/phy/Makefile @@ -50,6 +50,8 @@ obj-$(CONFIG_PHY_ST_SPEAR1310_MIPHY) += phy-spear1310-miphy.o obj-$(CONFIG_PHY_ST_SPEAR1340_MIPHY) += phy-spear1340-miphy.o obj-$(CONFIG_PHY_XGENE) += phy-xgene.o obj-$(CONFIG_PHY_STIH407_USB) += phy-stih407-usb.o +obj-$(CONFIG_PHY_QCOM_QMP) += phy-qcom-qmp.o +obj-$(CONFIG_PHY_QCOM_QUSB2) += phy-qcom-qusb2.o obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs.o obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-20nm.o obj-$(CONFIG_PHY_QCOM_UFS) += phy-qcom-ufs-qmp-14nm.o diff --git a/drivers/phy/phy-bcm-ns-usb3.c b/drivers/phy/phy-bcm-ns-usb3.c index f420fa4bebfc..22b5e7047fa6 100644 --- a/drivers/phy/phy-bcm-ns-usb3.c +++ b/drivers/phy/phy-bcm-ns-usb3.c @@ -2,6 +2,7 @@ * Broadcom Northstar USB 3.0 PHY Driver * * Copyright (C) 2016 RafaÅ‚ MiÅ‚ecki <rafal@milecki.pl> + * Copyright (C) 2016 Broadcom * * All magic values used for initialization (and related comments) were obtained * from Broadcom's SDK: @@ -23,6 +24,23 @@ #define BCM_NS_USB3_MII_MNG_TIMEOUT_US 1000 /* usecs */ +#define BCM_NS_USB3_PHY_BASE_ADDR_REG 0x1f +#define BCM_NS_USB3_PHY_PLL30_BLOCK 0x8000 +#define BCM_NS_USB3_PHY_TX_PMD_BLOCK 0x8040 +#define BCM_NS_USB3_PHY_PIPE_BLOCK 0x8060 + +/* Registers of PLL30 block */ +#define BCM_NS_USB3_PLL_CONTROL 0x01 +#define BCM_NS_USB3_PLLA_CONTROL0 0x0a +#define BCM_NS_USB3_PLLA_CONTROL1 0x0b + +/* Registers of TX PMD block */ +#define BCM_NS_USB3_TX_PMD_CONTROL1 0x01 + +/* Registers of PIPE block */ +#define BCM_NS_USB3_LFPS_CMP 0x02 +#define BCM_NS_USB3_LFPS_DEGLITCH 0x03 + enum bcm_ns_family { BCM_NS_UNKNOWN, BCM_NS_AX, @@ -76,8 +94,10 @@ static inline int bcm_ns_usb3_mii_mng_wait_idle(struct bcm_ns_usb3 *usb3) usecs_to_jiffies(BCM_NS_USB3_MII_MNG_TIMEOUT_US)); } -static int bcm_ns_usb3_mii_mng_write32(struct bcm_ns_usb3 *usb3, u32 value) +static int bcm_ns_usb3_mdio_phy_write(struct bcm_ns_usb3 *usb3, u16 reg, + u16 value) { + u32 tmp = 0; int err; err = bcm_ns_usb3_mii_mng_wait_idle(usb3); @@ -86,7 +106,11 @@ static int bcm_ns_usb3_mii_mng_write32(struct bcm_ns_usb3 *usb3, u32 value) return err; } - writel(value, usb3->ccb_mii + BCMA_CCB_MII_MNG_CMD_DATA); + /* TODO: Use a proper MDIO bus layer */ + tmp |= 0x58020000; /* Magic value for MDIO PHY write */ + tmp |= reg << 18; + tmp |= value; + writel(tmp, usb3->ccb_mii + BCMA_CCB_MII_MNG_CMD_DATA); return 0; } @@ -102,21 +126,22 @@ static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3) udelay(2); /* USB3 PLL Block */ - err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000); + err = bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, + BCM_NS_USB3_PHY_PLL30_BLOCK); if (err < 0) return err; /* Assert Ana_Pllseq start */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x58061000); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLL_CONTROL, 0x1000); /* Assert CML Divider ratio to 26 */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL0, 0x6400); /* Asserting PLL Reset */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x582ec000); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL1, 0xc000); /* Deaaserting PLL Reset */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x582e8000); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL1, 0x8000); /* Waiting MII Mgt interface idle */ bcm_ns_usb3_mii_mng_wait_idle(usb3); @@ -125,22 +150,24 @@ static int bcm_ns_usb3_phy_init_ns_bx(struct bcm_ns_usb3 *usb3) writel(0, usb3->dmp + BCMA_RESET_CTL); /* PLL frequency monitor enable */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x58069000); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLL_CONTROL, 0x9000); /* PIPE Block */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8060); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, + BCM_NS_USB3_PHY_PIPE_BLOCK); /* CMPMAX & CMPMINTH setting */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x580af30d); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_LFPS_CMP, 0xf30d); /* DEGLITCH MIN & MAX setting */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x580e6302); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_LFPS_DEGLITCH, 0x6302); /* TXPMD block */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, + BCM_NS_USB3_PHY_TX_PMD_BLOCK); /* Enabling SSC */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_TX_PMD_CONTROL1, 0x1003); /* Waiting MII Mgt interface idle */ bcm_ns_usb3_mii_mng_wait_idle(usb3); @@ -159,22 +186,24 @@ static int bcm_ns_usb3_phy_init_ns_ax(struct bcm_ns_usb3 *usb3) udelay(2); /* PLL30 block */ - err = bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8000); + err = bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, + BCM_NS_USB3_PHY_PLL30_BLOCK); if (err < 0) return err; - bcm_ns_usb3_mii_mng_write32(usb3, 0x582a6400); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PLLA_CONTROL0, 0x6400); - bcm_ns_usb3_mii_mng_write32(usb3, 0x587e80e0); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, 0x80e0); - bcm_ns_usb3_mii_mng_write32(usb3, 0x580a009c); + bcm_ns_usb3_mdio_phy_write(usb3, 0x02, 0x009c); /* Enable SSC */ - bcm_ns_usb3_mii_mng_write32(usb3, 0x587e8040); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_PHY_BASE_ADDR_REG, + BCM_NS_USB3_PHY_TX_PMD_BLOCK); - bcm_ns_usb3_mii_mng_write32(usb3, 0x580a21d3); + bcm_ns_usb3_mdio_phy_write(usb3, 0x02, 0x21d3); - bcm_ns_usb3_mii_mng_write32(usb3, 0x58061003); + bcm_ns_usb3_mdio_phy_write(usb3, BCM_NS_USB3_TX_PMD_CONTROL1, 0x1003); /* Waiting MII Mgt interface idle */ bcm_ns_usb3_mii_mng_wait_idle(usb3); diff --git a/drivers/phy/phy-exynos-dp-video.c b/drivers/phy/phy-exynos-dp-video.c index 34b06154e5d9..bb3279dbf88c 100644 --- a/drivers/phy/phy-exynos-dp-video.c +++ b/drivers/phy/phy-exynos-dp-video.c @@ -14,12 +14,12 @@ #include <linux/kernel.h> #include <linux/module.h> #include <linux/mfd/syscon.h> -#include <linux/mfd/syscon/exynos5-pmu.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/regmap.h> +#include <linux/soc/samsung/exynos-regs-pmu.h> struct exynos_dp_video_phy_drvdata { u32 phy_ctrl_offset; @@ -36,7 +36,7 @@ static int exynos_dp_video_phy_power_on(struct phy *phy) /* Disable power isolation on DP-PHY */ return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset, - EXYNOS5_PHY_ENABLE, EXYNOS5_PHY_ENABLE); + EXYNOS4_PHY_ENABLE, EXYNOS4_PHY_ENABLE); } static int exynos_dp_video_phy_power_off(struct phy *phy) @@ -45,7 +45,7 @@ static int exynos_dp_video_phy_power_off(struct phy *phy) /* Enable power isolation on DP-PHY */ return regmap_update_bits(state->regs, state->drvdata->phy_ctrl_offset, - EXYNOS5_PHY_ENABLE, 0); + EXYNOS4_PHY_ENABLE, 0); } static const struct phy_ops exynos_dp_video_phy_ops = { diff --git a/drivers/phy/phy-exynos-mipi-video.c b/drivers/phy/phy-exynos-mipi-video.c index 6bee04cc4d53..c198886f80a3 100644 --- a/drivers/phy/phy-exynos-mipi-video.c +++ b/drivers/phy/phy-exynos-mipi-video.c @@ -12,8 +12,6 @@ #include <linux/err.h> #include <linux/io.h> #include <linux/kernel.h> -#include <linux/mfd/syscon/exynos4-pmu.h> -#include <linux/mfd/syscon/exynos5-pmu.h> #include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> @@ -21,6 +19,7 @@ #include <linux/phy/phy.h> #include <linux/regmap.h> #include <linux/spinlock.h> +#include <linux/soc/samsung/exynos-regs-pmu.h> #include <linux/mfd/syscon.h> enum exynos_mipi_phy_id { @@ -64,7 +63,7 @@ static const struct mipi_phy_device_desc s5pv210_mipi_phy = { { /* EXYNOS_MIPI_PHY_ID_CSIS0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0, - .enable_val = EXYNOS4_MIPI_PHY_ENABLE, + .enable_val = EXYNOS4_PHY_ENABLE, .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = EXYNOS4_MIPI_PHY_SRESETN, @@ -73,7 +72,7 @@ static const struct mipi_phy_device_desc s5pv210_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_DSIM0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0, - .enable_val = EXYNOS4_MIPI_PHY_ENABLE, + .enable_val = EXYNOS4_PHY_ENABLE, .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = EXYNOS4_MIPI_PHY_MRESETN, @@ -82,7 +81,7 @@ static const struct mipi_phy_device_desc s5pv210_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_CSIS1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM1, - .enable_val = EXYNOS4_MIPI_PHY_ENABLE, + .enable_val = EXYNOS4_PHY_ENABLE, .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = EXYNOS4_MIPI_PHY_SRESETN, @@ -91,7 +90,7 @@ static const struct mipi_phy_device_desc s5pv210_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_DSIM1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS1, - .enable_val = EXYNOS4_MIPI_PHY_ENABLE, + .enable_val = EXYNOS4_PHY_ENABLE, .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = EXYNOS4_MIPI_PHY_MRESETN, @@ -109,47 +108,47 @@ static const struct mipi_phy_device_desc exynos5420_mipi_phy = { { /* EXYNOS_MIPI_PHY_ID_CSIS0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5420_MIPI_PHY0_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, - .resetn_val = EXYNOS5_MIPI_PHY_S_RESETN, - .resetn_reg = EXYNOS5420_MIPI_PHY0_CONTROL, + .resetn_val = EXYNOS4_MIPI_PHY_SRESETN, + .resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(0), .resetn_map = EXYNOS_MIPI_REGMAP_PMU, }, { /* EXYNOS_MIPI_PHY_ID_DSIM0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5420_MIPI_PHY0_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, - .resetn_val = EXYNOS5_MIPI_PHY_M_RESETN, - .resetn_reg = EXYNOS5420_MIPI_PHY0_CONTROL, + .resetn_val = EXYNOS4_MIPI_PHY_MRESETN, + .resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(0), .resetn_map = EXYNOS_MIPI_REGMAP_PMU, }, { /* EXYNOS_MIPI_PHY_ID_CSIS1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM1, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5420_MIPI_PHY1_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, - .resetn_val = EXYNOS5_MIPI_PHY_S_RESETN, - .resetn_reg = EXYNOS5420_MIPI_PHY1_CONTROL, + .resetn_val = EXYNOS4_MIPI_PHY_SRESETN, + .resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(1), .resetn_map = EXYNOS_MIPI_REGMAP_PMU, }, { /* EXYNOS_MIPI_PHY_ID_DSIM1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS1, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5420_MIPI_PHY1_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, - .resetn_val = EXYNOS5_MIPI_PHY_M_RESETN, - .resetn_reg = EXYNOS5420_MIPI_PHY1_CONTROL, + .resetn_val = EXYNOS4_MIPI_PHY_MRESETN, + .resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(1), .resetn_map = EXYNOS_MIPI_REGMAP_PMU, }, { /* EXYNOS_MIPI_PHY_ID_CSIS2 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5420_MIPI_PHY2_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS5420_MIPI_PHY_CONTROL(2), .enable_map = EXYNOS_MIPI_REGMAP_PMU, - .resetn_val = EXYNOS5_MIPI_PHY_S_RESETN, - .resetn_reg = EXYNOS5420_MIPI_PHY2_CONTROL, + .resetn_val = EXYNOS4_MIPI_PHY_SRESETN, + .resetn_reg = EXYNOS5420_MIPI_PHY_CONTROL(2), .resetn_map = EXYNOS_MIPI_REGMAP_PMU, }, }, @@ -172,8 +171,8 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = { { /* EXYNOS_MIPI_PHY_ID_CSIS0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_DSIM0, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5433_MIPI_PHY0_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = BIT(0), .resetn_reg = EXYNOS5433_SYSREG_CAM0_MIPI_DPHY_CON, @@ -181,8 +180,8 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_DSIM0 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_CSIS0, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5433_MIPI_PHY0_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(0), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = BIT(0), .resetn_reg = EXYNOS5433_SYSREG_DISP_MIPI_PHY, @@ -190,8 +189,8 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_CSIS1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5433_MIPI_PHY1_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = BIT(1), .resetn_reg = EXYNOS5433_SYSREG_CAM0_MIPI_DPHY_CON, @@ -199,8 +198,8 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_DSIM1 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5433_MIPI_PHY1_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(1), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = BIT(1), .resetn_reg = EXYNOS5433_SYSREG_DISP_MIPI_PHY, @@ -208,8 +207,8 @@ static const struct mipi_phy_device_desc exynos5433_mipi_phy = { }, { /* EXYNOS_MIPI_PHY_ID_CSIS2 */ .coupled_phy_id = EXYNOS_MIPI_PHY_ID_NONE, - .enable_val = EXYNOS5_PHY_ENABLE, - .enable_reg = EXYNOS5433_MIPI_PHY2_CONTROL, + .enable_val = EXYNOS4_PHY_ENABLE, + .enable_reg = EXYNOS4_MIPI_PHY_CONTROL(2), .enable_map = EXYNOS_MIPI_REGMAP_PMU, .resetn_val = BIT(0), .resetn_reg = EXYNOS5433_SYSREG_CAM1_MIPI_DPHY_CON, diff --git a/drivers/phy/phy-exynos-pcie.c b/drivers/phy/phy-exynos-pcie.c index 60baf25d98e2..a89c12faff39 100644 --- a/drivers/phy/phy-exynos-pcie.c +++ b/drivers/phy/phy-exynos-pcie.c @@ -14,8 +14,8 @@ #include <linux/delay.h> #include <linux/io.h> #include <linux/iopoll.h> +#include <linux/init.h> #include <linux/mfd/syscon.h> -#include <linux/module.h> #include <linux/of.h> #include <linux/of_address.h> #include <linux/of_platform.h> @@ -228,7 +228,6 @@ static const struct of_device_id exynos_pcie_phy_match[] = { }, {}, }; -MODULE_DEVICE_TABLE(of, exynos_pcie_phy_match); static int exynos_pcie_phy_probe(struct platform_device *pdev) { @@ -278,8 +277,5 @@ static struct platform_driver exynos_pcie_phy_driver = { .name = "exynos_pcie_phy", } }; -module_platform_driver(exynos_pcie_phy_driver); -MODULE_DESCRIPTION("Samsung S5P/EXYNOS SoC PCIe PHY driver"); -MODULE_AUTHOR("Jaehoon Chung <jh80.chung@samsung.com>"); -MODULE_LICENSE("GPL v2"); +builtin_platform_driver(exynos_pcie_phy_driver); diff --git a/drivers/phy/phy-exynos5-usbdrd.c b/drivers/phy/phy-exynos5-usbdrd.c index 07ed608905ac..7c41daa2c625 100644 --- a/drivers/phy/phy-exynos5-usbdrd.c +++ b/drivers/phy/phy-exynos5-usbdrd.c @@ -22,9 +22,9 @@ #include <linux/platform_device.h> #include <linux/mutex.h> #include <linux/mfd/syscon.h> -#include <linux/mfd/syscon/exynos5-pmu.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> +#include <linux/soc/samsung/exynos-regs-pmu.h> /* Exynos USB PHY registers */ #define EXYNOS5_FSEL_9MHZ6 0x0 @@ -235,10 +235,10 @@ static void exynos5_usbdrd_phy_isol(struct phy_usb_instance *inst, if (!inst->reg_pmu) return; - val = on ? 0 : EXYNOS5_PHY_ENABLE; + val = on ? 0 : EXYNOS4_PHY_ENABLE; regmap_update_bits(inst->reg_pmu, inst->pmu_offset, - EXYNOS5_PHY_ENABLE, val); + EXYNOS4_PHY_ENABLE, val); } /* diff --git a/drivers/phy/phy-meson8b-usb2.c b/drivers/phy/phy-meson8b-usb2.c index 33c9f4ba157d..30f56a6a411f 100644 --- a/drivers/phy/phy-meson8b-usb2.c +++ b/drivers/phy/phy-meson8b-usb2.c @@ -81,9 +81,9 @@ #define REG_ADP_BC_ACA_PIN_GND BIT(25) #define REG_ADP_BC_ACA_PIN_FLOAT BIT(26) -#define REG_DBG_UART 0x14 +#define REG_DBG_UART 0x10 -#define REG_TEST 0x18 +#define REG_TEST 0x14 #define REG_TEST_DATA_IN_MASK GENMASK(3, 0) #define REG_TEST_EN_MASK GENMASK(7, 4) #define REG_TEST_ADDR_MASK GENMASK(11, 8) @@ -93,7 +93,7 @@ #define REG_TEST_DATA_OUT_MASK GENMASK(19, 16) #define REG_TEST_DISABLE_ID_PULLUP BIT(20) -#define REG_TUNE 0x1c +#define REG_TUNE 0x18 #define REG_TUNE_TX_RES_TUNE_MASK GENMASK(1, 0) #define REG_TUNE_TX_HSXV_TUNE_MASK GENMASK(3, 2) #define REG_TUNE_TX_VREF_TUNE_MASK GENMASK(7, 4) diff --git a/drivers/phy/phy-mt65xx-usb3.c b/drivers/phy/phy-mt65xx-usb3.c index d9720675b9db..59b110f795c3 100644 --- a/drivers/phy/phy-mt65xx-usb3.c +++ b/drivers/phy/phy-mt65xx-usb3.c @@ -23,47 +23,55 @@ #include <linux/phy/phy.h> #include <linux/platform_device.h> -/* - * for sifslv2 register, but exclude port's; - * relative to USB3_SIF2_BASE base address - */ -#define SSUSB_SIFSLV_SPLLC 0x0000 -#define SSUSB_SIFSLV_U2FREQ 0x0100 - -/* offsets of sub-segment in each port registers */ -#define SSUSB_SIFSLV_U2PHY_COM_BASE 0x0000 -#define SSUSB_SIFSLV_U3PHYD_BASE 0x0100 -#define SSUSB_USB30_PHYA_SIV_B_BASE 0x0300 -#define SSUSB_SIFSLV_U3PHYA_DA_BASE 0x0400 - -#define U3P_USBPHYACR0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0000) +/* version V1 sub-banks offset base address */ +/* banks shared by multiple phys */ +#define SSUSB_SIFSLV_V1_SPLLC 0x000 /* shared by u3 phys */ +#define SSUSB_SIFSLV_V1_U2FREQ 0x100 /* shared by u2 phys */ +/* u2 phy bank */ +#define SSUSB_SIFSLV_V1_U2PHY_COM 0x000 +/* u3 phy banks */ +#define SSUSB_SIFSLV_V1_U3PHYD 0x000 +#define SSUSB_SIFSLV_V1_U3PHYA 0x200 + +/* version V2 sub-banks offset base address */ +/* u2 phy banks */ +#define SSUSB_SIFSLV_V2_MISC 0x000 +#define SSUSB_SIFSLV_V2_U2FREQ 0x100 +#define SSUSB_SIFSLV_V2_U2PHY_COM 0x300 +/* u3 phy banks */ +#define SSUSB_SIFSLV_V2_SPLLC 0x000 +#define SSUSB_SIFSLV_V2_CHIP 0x100 +#define SSUSB_SIFSLV_V2_U3PHYD 0x200 +#define SSUSB_SIFSLV_V2_U3PHYA 0x400 + +#define U3P_USBPHYACR0 0x000 #define PA0_RG_U2PLL_FORCE_ON BIT(15) +#define PA0_RG_USB20_INTR_EN BIT(5) -#define U3P_USBPHYACR2 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0008) +#define U3P_USBPHYACR2 0x008 #define PA2_RG_SIF_U2PLL_FORCE_EN BIT(18) -#define U3P_USBPHYACR5 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0014) +#define U3P_USBPHYACR5 0x014 #define PA5_RG_U2_HSTX_SRCAL_EN BIT(15) #define PA5_RG_U2_HSTX_SRCTRL GENMASK(14, 12) #define PA5_RG_U2_HSTX_SRCTRL_VAL(x) ((0x7 & (x)) << 12) #define PA5_RG_U2_HS_100U_U3_EN BIT(11) -#define U3P_USBPHYACR6 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0018) -#define PA6_RG_U2_ISO_EN BIT(31) +#define U3P_USBPHYACR6 0x018 #define PA6_RG_U2_BC11_SW_EN BIT(23) #define PA6_RG_U2_OTG_VBUSCMP_EN BIT(20) #define PA6_RG_U2_SQTH GENMASK(3, 0) #define PA6_RG_U2_SQTH_VAL(x) (0xf & (x)) -#define U3P_U2PHYACR4 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0020) +#define U3P_U2PHYACR4 0x020 #define P2C_RG_USB20_GPIO_CTL BIT(9) #define P2C_USB20_GPIO_MODE BIT(8) #define P2C_U2_GPIO_CTR_MSK (P2C_RG_USB20_GPIO_CTL | P2C_USB20_GPIO_MODE) -#define U3D_U2PHYDCR0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0060) +#define U3D_U2PHYDCR0 0x060 #define P2C_RG_SIF_U2PLL_FORCE_ON BIT(24) -#define U3P_U2PHYDTM0 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x0068) +#define U3P_U2PHYDTM0 0x068 #define P2C_FORCE_UART_EN BIT(26) #define P2C_FORCE_DATAIN BIT(23) #define P2C_FORCE_DM_PULLDOWN BIT(21) @@ -85,47 +93,56 @@ P2C_FORCE_TERMSEL | P2C_RG_DMPULLDOWN | \ P2C_RG_DPPULLDOWN | P2C_RG_TERMSEL) -#define U3P_U2PHYDTM1 (SSUSB_SIFSLV_U2PHY_COM_BASE + 0x006C) +#define U3P_U2PHYDTM1 0x06C #define P2C_RG_UART_EN BIT(16) #define P2C_RG_VBUSVALID BIT(5) #define P2C_RG_SESSEND BIT(4) #define P2C_RG_AVALID BIT(2) -#define U3P_U3_PHYA_REG0 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0000) -#define P3A_RG_U3_VUSB10_ON BIT(5) - -#define U3P_U3_PHYA_REG6 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0018) +#define U3P_U3_PHYA_REG6 0x018 #define P3A_RG_TX_EIDLE_CM GENMASK(31, 28) #define P3A_RG_TX_EIDLE_CM_VAL(x) ((0xf & (x)) << 28) -#define U3P_U3_PHYA_REG9 (SSUSB_USB30_PHYA_SIV_B_BASE + 0x0024) +#define U3P_U3_PHYA_REG9 0x024 #define P3A_RG_RX_DAC_MUX GENMASK(5, 1) #define P3A_RG_RX_DAC_MUX_VAL(x) ((0x1f & (x)) << 1) -#define U3P_U3PHYA_DA_REG0 (SSUSB_SIFSLV_U3PHYA_DA_BASE + 0x0000) +#define U3P_U3_PHYA_DA_REG0 0x100 #define P3A_RG_XTAL_EXT_EN_U3 GENMASK(11, 10) #define P3A_RG_XTAL_EXT_EN_U3_VAL(x) ((0x3 & (x)) << 10) -#define U3P_PHYD_CDR1 (SSUSB_SIFSLV_U3PHYD_BASE + 0x005c) +#define U3P_U3_PHYD_LFPS1 0x00c +#define P3D_RG_FWAKE_TH GENMASK(21, 16) +#define P3D_RG_FWAKE_TH_VAL(x) ((0x3f & (x)) << 16) + +#define U3P_U3_PHYD_CDR1 0x05c #define P3D_RG_CDR_BIR_LTD1 GENMASK(28, 24) #define P3D_RG_CDR_BIR_LTD1_VAL(x) ((0x1f & (x)) << 24) #define P3D_RG_CDR_BIR_LTD0 GENMASK(12, 8) #define P3D_RG_CDR_BIR_LTD0_VAL(x) ((0x1f & (x)) << 8) -#define U3P_XTALCTL3 (SSUSB_SIFSLV_SPLLC + 0x0018) +#define U3P_U3_PHYD_RXDET1 0x128 +#define P3D_RG_RXDET_STB2_SET GENMASK(17, 9) +#define P3D_RG_RXDET_STB2_SET_VAL(x) ((0x1ff & (x)) << 9) + +#define U3P_U3_PHYD_RXDET2 0x12c +#define P3D_RG_RXDET_STB2_SET_P3 GENMASK(8, 0) +#define P3D_RG_RXDET_STB2_SET_P3_VAL(x) (0x1ff & (x)) + +#define U3P_SPLLC_XTALCTL3 0x018 #define XC3_RG_U3_XTAL_RX_PWD BIT(9) #define XC3_RG_U3_FRC_XTAL_RX_PWD BIT(8) -#define U3P_U2FREQ_FMCR0 (SSUSB_SIFSLV_U2FREQ + 0x00) +#define U3P_U2FREQ_FMCR0 0x00 #define P2F_RG_MONCLK_SEL GENMASK(27, 26) #define P2F_RG_MONCLK_SEL_VAL(x) ((0x3 & (x)) << 26) #define P2F_RG_FREQDET_EN BIT(24) #define P2F_RG_CYCLECNT GENMASK(23, 0) #define P2F_RG_CYCLECNT_VAL(x) ((P2F_RG_CYCLECNT) & (x)) -#define U3P_U2FREQ_VALUE (SSUSB_SIFSLV_U2FREQ + 0x0c) +#define U3P_U2FREQ_VALUE 0x0c -#define U3P_U2FREQ_FMMONR1 (SSUSB_SIFSLV_U2FREQ + 0x10) +#define U3P_U2FREQ_FMMONR1 0x10 #define P2F_USB_FM_VALID BIT(0) #define P2F_RG_FRCK_EN BIT(8) @@ -134,21 +151,46 @@ #define U3P_SR_COEF_DIVISOR 1000 #define U3P_FM_DET_CYCLE_CNT 1024 +enum mt_phy_version { + MT_PHY_V1 = 1, + MT_PHY_V2, +}; + struct mt65xx_phy_pdata { /* avoid RX sensitivity level degradation only for mt8173 */ bool avoid_rx_sen_degradation; + enum mt_phy_version version; +}; + +struct u2phy_banks { + void __iomem *misc; + void __iomem *fmreg; + void __iomem *com; +}; + +struct u3phy_banks { + void __iomem *spllc; + void __iomem *chip; + void __iomem *phyd; /* include u3phyd_bank2 */ + void __iomem *phya; /* include u3phya_da */ }; struct mt65xx_phy_instance { struct phy *phy; void __iomem *port_base; + union { + struct u2phy_banks u2_banks; + struct u3phy_banks u3_banks; + }; + struct clk *ref_clk; /* reference clock of anolog phy */ u32 index; u8 type; }; struct mt65xx_u3phy { struct device *dev; - void __iomem *sif_base; /* include sif2, but exclude port's */ + void __iomem *sif_base; /* only shared sif */ + /* deprecated, use @ref_clk instead in phy instance */ struct clk *u3phya_ref; /* reference clock of usb3 anolog phy */ const struct mt65xx_phy_pdata *pdata; struct mt65xx_phy_instance **phys; @@ -158,49 +200,53 @@ struct mt65xx_u3phy { static void hs_slew_rate_calibrate(struct mt65xx_u3phy *u3phy, struct mt65xx_phy_instance *instance) { - void __iomem *sif_base = u3phy->sif_base; + struct u2phy_banks *u2_banks = &instance->u2_banks; + void __iomem *fmreg = u2_banks->fmreg; + void __iomem *com = u2_banks->com; int calibration_val; int fm_out; u32 tmp; /* enable USB ring oscillator */ - tmp = readl(instance->port_base + U3P_USBPHYACR5); + tmp = readl(com + U3P_USBPHYACR5); tmp |= PA5_RG_U2_HSTX_SRCAL_EN; - writel(tmp, instance->port_base + U3P_USBPHYACR5); + writel(tmp, com + U3P_USBPHYACR5); udelay(1); /*enable free run clock */ - tmp = readl(sif_base + U3P_U2FREQ_FMMONR1); + tmp = readl(fmreg + U3P_U2FREQ_FMMONR1); tmp |= P2F_RG_FRCK_EN; - writel(tmp, sif_base + U3P_U2FREQ_FMMONR1); + writel(tmp, fmreg + U3P_U2FREQ_FMMONR1); /* set cycle count as 1024, and select u2 channel */ - tmp = readl(sif_base + U3P_U2FREQ_FMCR0); + tmp = readl(fmreg + U3P_U2FREQ_FMCR0); tmp &= ~(P2F_RG_CYCLECNT | P2F_RG_MONCLK_SEL); tmp |= P2F_RG_CYCLECNT_VAL(U3P_FM_DET_CYCLE_CNT); - tmp |= P2F_RG_MONCLK_SEL_VAL(instance->index); - writel(tmp, sif_base + U3P_U2FREQ_FMCR0); + if (u3phy->pdata->version == MT_PHY_V1) + tmp |= P2F_RG_MONCLK_SEL_VAL(instance->index >> 1); + + writel(tmp, fmreg + U3P_U2FREQ_FMCR0); /* enable frequency meter */ - tmp = readl(sif_base + U3P_U2FREQ_FMCR0); + tmp = readl(fmreg + U3P_U2FREQ_FMCR0); tmp |= P2F_RG_FREQDET_EN; - writel(tmp, sif_base + U3P_U2FREQ_FMCR0); + writel(tmp, fmreg + U3P_U2FREQ_FMCR0); /* ignore return value */ - readl_poll_timeout(sif_base + U3P_U2FREQ_FMMONR1, tmp, - (tmp & P2F_USB_FM_VALID), 10, 200); + readl_poll_timeout(fmreg + U3P_U2FREQ_FMMONR1, tmp, + (tmp & P2F_USB_FM_VALID), 10, 200); - fm_out = readl(sif_base + U3P_U2FREQ_VALUE); + fm_out = readl(fmreg + U3P_U2FREQ_VALUE); /* disable frequency meter */ - tmp = readl(sif_base + U3P_U2FREQ_FMCR0); + tmp = readl(fmreg + U3P_U2FREQ_FMCR0); tmp &= ~P2F_RG_FREQDET_EN; - writel(tmp, sif_base + U3P_U2FREQ_FMCR0); + writel(tmp, fmreg + U3P_U2FREQ_FMCR0); /*disable free run clock */ - tmp = readl(sif_base + U3P_U2FREQ_FMMONR1); + tmp = readl(fmreg + U3P_U2FREQ_FMMONR1); tmp &= ~P2F_RG_FRCK_EN; - writel(tmp, sif_base + U3P_U2FREQ_FMMONR1); + writel(tmp, fmreg + U3P_U2FREQ_FMMONR1); if (fm_out) { /* ( 1024 / FM_OUT ) x reference clock frequency x 0.028 */ @@ -215,85 +261,125 @@ static void hs_slew_rate_calibrate(struct mt65xx_u3phy *u3phy, instance->index, fm_out, calibration_val); /* set HS slew rate */ - tmp = readl(instance->port_base + U3P_USBPHYACR5); + tmp = readl(com + U3P_USBPHYACR5); tmp &= ~PA5_RG_U2_HSTX_SRCTRL; tmp |= PA5_RG_U2_HSTX_SRCTRL_VAL(calibration_val); - writel(tmp, instance->port_base + U3P_USBPHYACR5); + writel(tmp, com + U3P_USBPHYACR5); /* disable USB ring oscillator */ - tmp = readl(instance->port_base + U3P_USBPHYACR5); + tmp = readl(com + U3P_USBPHYACR5); tmp &= ~PA5_RG_U2_HSTX_SRCAL_EN; - writel(tmp, instance->port_base + U3P_USBPHYACR5); + writel(tmp, com + U3P_USBPHYACR5); +} + +static void u3_phy_instance_init(struct mt65xx_u3phy *u3phy, + struct mt65xx_phy_instance *instance) +{ + struct u3phy_banks *u3_banks = &instance->u3_banks; + u32 tmp; + + /* gating PCIe Analog XTAL clock */ + tmp = readl(u3_banks->spllc + U3P_SPLLC_XTALCTL3); + tmp |= XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD; + writel(tmp, u3_banks->spllc + U3P_SPLLC_XTALCTL3); + + /* gating XSQ */ + tmp = readl(u3_banks->phya + U3P_U3_PHYA_DA_REG0); + tmp &= ~P3A_RG_XTAL_EXT_EN_U3; + tmp |= P3A_RG_XTAL_EXT_EN_U3_VAL(2); + writel(tmp, u3_banks->phya + U3P_U3_PHYA_DA_REG0); + + tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG9); + tmp &= ~P3A_RG_RX_DAC_MUX; + tmp |= P3A_RG_RX_DAC_MUX_VAL(4); + writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG9); + + tmp = readl(u3_banks->phya + U3P_U3_PHYA_REG6); + tmp &= ~P3A_RG_TX_EIDLE_CM; + tmp |= P3A_RG_TX_EIDLE_CM_VAL(0xe); + writel(tmp, u3_banks->phya + U3P_U3_PHYA_REG6); + + tmp = readl(u3_banks->phyd + U3P_U3_PHYD_CDR1); + tmp &= ~(P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1); + tmp |= P3D_RG_CDR_BIR_LTD0_VAL(0xc) | P3D_RG_CDR_BIR_LTD1_VAL(0x3); + writel(tmp, u3_banks->phyd + U3P_U3_PHYD_CDR1); + + tmp = readl(u3_banks->phyd + U3P_U3_PHYD_LFPS1); + tmp &= ~P3D_RG_FWAKE_TH; + tmp |= P3D_RG_FWAKE_TH_VAL(0x34); + writel(tmp, u3_banks->phyd + U3P_U3_PHYD_LFPS1); + + tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET1); + tmp &= ~P3D_RG_RXDET_STB2_SET; + tmp |= P3D_RG_RXDET_STB2_SET_VAL(0x10); + writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET1); + + tmp = readl(u3_banks->phyd + U3P_U3_PHYD_RXDET2); + tmp &= ~P3D_RG_RXDET_STB2_SET_P3; + tmp |= P3D_RG_RXDET_STB2_SET_P3_VAL(0x10); + writel(tmp, u3_banks->phyd + U3P_U3_PHYD_RXDET2); + + dev_dbg(u3phy->dev, "%s(%d)\n", __func__, instance->index); } static void phy_instance_init(struct mt65xx_u3phy *u3phy, struct mt65xx_phy_instance *instance) { - void __iomem *port_base = instance->port_base; + struct u2phy_banks *u2_banks = &instance->u2_banks; + void __iomem *com = u2_banks->com; u32 index = instance->index; u32 tmp; /* switch to USB function. (system register, force ip into usb mode) */ - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp &= ~P2C_FORCE_UART_EN; tmp |= P2C_RG_XCVRSEL_VAL(1) | P2C_RG_DATAIN_VAL(0); - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); - tmp = readl(port_base + U3P_U2PHYDTM1); + tmp = readl(com + U3P_U2PHYDTM1); tmp &= ~P2C_RG_UART_EN; - writel(tmp, port_base + U3P_U2PHYDTM1); + writel(tmp, com + U3P_U2PHYDTM1); + + tmp = readl(com + U3P_USBPHYACR0); + tmp |= PA0_RG_USB20_INTR_EN; + writel(tmp, com + U3P_USBPHYACR0); + + /* disable switch 100uA current to SSUSB */ + tmp = readl(com + U3P_USBPHYACR5); + tmp &= ~PA5_RG_U2_HS_100U_U3_EN; + writel(tmp, com + U3P_USBPHYACR5); if (!index) { - tmp = readl(port_base + U3P_U2PHYACR4); + tmp = readl(com + U3P_U2PHYACR4); tmp &= ~P2C_U2_GPIO_CTR_MSK; - writel(tmp, port_base + U3P_U2PHYACR4); + writel(tmp, com + U3P_U2PHYACR4); } if (u3phy->pdata->avoid_rx_sen_degradation) { if (!index) { - tmp = readl(port_base + U3P_USBPHYACR2); + tmp = readl(com + U3P_USBPHYACR2); tmp |= PA2_RG_SIF_U2PLL_FORCE_EN; - writel(tmp, port_base + U3P_USBPHYACR2); + writel(tmp, com + U3P_USBPHYACR2); - tmp = readl(port_base + U3D_U2PHYDCR0); + tmp = readl(com + U3D_U2PHYDCR0); tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); + writel(tmp, com + U3D_U2PHYDCR0); } else { - tmp = readl(port_base + U3D_U2PHYDCR0); + tmp = readl(com + U3D_U2PHYDCR0); tmp |= P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); + writel(tmp, com + U3D_U2PHYDCR0); - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); } } - tmp = readl(port_base + U3P_USBPHYACR6); + tmp = readl(com + U3P_USBPHYACR6); tmp &= ~PA6_RG_U2_BC11_SW_EN; /* DP/DM BC1.1 path Disable */ tmp &= ~PA6_RG_U2_SQTH; tmp |= PA6_RG_U2_SQTH_VAL(2); - writel(tmp, port_base + U3P_USBPHYACR6); - - tmp = readl(port_base + U3P_U3PHYA_DA_REG0); - tmp &= ~P3A_RG_XTAL_EXT_EN_U3; - tmp |= P3A_RG_XTAL_EXT_EN_U3_VAL(2); - writel(tmp, port_base + U3P_U3PHYA_DA_REG0); - - tmp = readl(port_base + U3P_U3_PHYA_REG9); - tmp &= ~P3A_RG_RX_DAC_MUX; - tmp |= P3A_RG_RX_DAC_MUX_VAL(4); - writel(tmp, port_base + U3P_U3_PHYA_REG9); - - tmp = readl(port_base + U3P_U3_PHYA_REG6); - tmp &= ~P3A_RG_TX_EIDLE_CM; - tmp |= P3A_RG_TX_EIDLE_CM_VAL(0xe); - writel(tmp, port_base + U3P_U3_PHYA_REG6); - - tmp = readl(port_base + U3P_PHYD_CDR1); - tmp &= ~(P3D_RG_CDR_BIR_LTD0 | P3D_RG_CDR_BIR_LTD1); - tmp |= P3D_RG_CDR_BIR_LTD0_VAL(0xc) | P3D_RG_CDR_BIR_LTD1_VAL(0x3); - writel(tmp, port_base + U3P_PHYD_CDR1); + writel(tmp, com + U3P_USBPHYACR6); dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index); } @@ -301,58 +387,35 @@ static void phy_instance_init(struct mt65xx_u3phy *u3phy, static void phy_instance_power_on(struct mt65xx_u3phy *u3phy, struct mt65xx_phy_instance *instance) { - void __iomem *port_base = instance->port_base; + struct u2phy_banks *u2_banks = &instance->u2_banks; + void __iomem *com = u2_banks->com; u32 index = instance->index; u32 tmp; - if (!index) { - /* Set RG_SSUSB_VUSB10_ON as 1 after VUSB10 ready */ - tmp = readl(port_base + U3P_U3_PHYA_REG0); - tmp |= P3A_RG_U3_VUSB10_ON; - writel(tmp, port_base + U3P_U3_PHYA_REG0); - } - /* (force_suspendm=0) (let suspendm=1, enable usb 480MHz pll) */ - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp &= ~(P2C_FORCE_SUSPENDM | P2C_RG_XCVRSEL); tmp &= ~(P2C_RG_DATAIN | P2C_DTM0_PART_MASK); - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); /* OTG Enable */ - tmp = readl(port_base + U3P_USBPHYACR6); + tmp = readl(com + U3P_USBPHYACR6); tmp |= PA6_RG_U2_OTG_VBUSCMP_EN; - writel(tmp, port_base + U3P_USBPHYACR6); + writel(tmp, com + U3P_USBPHYACR6); - if (!index) { - tmp = readl(u3phy->sif_base + U3P_XTALCTL3); - tmp |= XC3_RG_U3_XTAL_RX_PWD | XC3_RG_U3_FRC_XTAL_RX_PWD; - writel(tmp, u3phy->sif_base + U3P_XTALCTL3); - - /* switch 100uA current to SSUSB */ - tmp = readl(port_base + U3P_USBPHYACR5); - tmp |= PA5_RG_U2_HS_100U_U3_EN; - writel(tmp, port_base + U3P_USBPHYACR5); - } - - tmp = readl(port_base + U3P_U2PHYDTM1); + tmp = readl(com + U3P_U2PHYDTM1); tmp |= P2C_RG_VBUSVALID | P2C_RG_AVALID; tmp &= ~P2C_RG_SESSEND; - writel(tmp, port_base + U3P_U2PHYDTM1); - - /* USB 2.0 slew rate calibration */ - tmp = readl(port_base + U3P_USBPHYACR5); - tmp &= ~PA5_RG_U2_HSTX_SRCTRL; - tmp |= PA5_RG_U2_HSTX_SRCTRL_VAL(4); - writel(tmp, port_base + U3P_USBPHYACR5); + writel(tmp, com + U3P_U2PHYDTM1); if (u3phy->pdata->avoid_rx_sen_degradation && index) { - tmp = readl(port_base + U3D_U2PHYDCR0); + tmp = readl(com + U3D_U2PHYDCR0); tmp |= P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); + writel(tmp, com + U3D_U2PHYDCR0); - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp |= P2C_RG_SUSPENDM | P2C_FORCE_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); } dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index); } @@ -360,48 +423,36 @@ static void phy_instance_power_on(struct mt65xx_u3phy *u3phy, static void phy_instance_power_off(struct mt65xx_u3phy *u3phy, struct mt65xx_phy_instance *instance) { - void __iomem *port_base = instance->port_base; + struct u2phy_banks *u2_banks = &instance->u2_banks; + void __iomem *com = u2_banks->com; u32 index = instance->index; u32 tmp; - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp &= ~(P2C_RG_XCVRSEL | P2C_RG_DATAIN); tmp |= P2C_FORCE_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); /* OTG Disable */ - tmp = readl(port_base + U3P_USBPHYACR6); + tmp = readl(com + U3P_USBPHYACR6); tmp &= ~PA6_RG_U2_OTG_VBUSCMP_EN; - writel(tmp, port_base + U3P_USBPHYACR6); - - if (!index) { - /* switch 100uA current back to USB2.0 */ - tmp = readl(port_base + U3P_USBPHYACR5); - tmp &= ~PA5_RG_U2_HS_100U_U3_EN; - writel(tmp, port_base + U3P_USBPHYACR5); - } + writel(tmp, com + U3P_USBPHYACR6); /* let suspendm=0, set utmi into analog power down */ - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp &= ~P2C_RG_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); udelay(1); - tmp = readl(port_base + U3P_U2PHYDTM1); + tmp = readl(com + U3P_U2PHYDTM1); tmp &= ~(P2C_RG_VBUSVALID | P2C_RG_AVALID); tmp |= P2C_RG_SESSEND; - writel(tmp, port_base + U3P_U2PHYDTM1); - - if (!index) { - tmp = readl(port_base + U3P_U3_PHYA_REG0); - tmp &= ~P3A_RG_U3_VUSB10_ON; - writel(tmp, port_base + U3P_U3_PHYA_REG0); - } + writel(tmp, com + U3P_U2PHYDTM1); if (u3phy->pdata->avoid_rx_sen_degradation && index) { - tmp = readl(port_base + U3D_U2PHYDCR0); + tmp = readl(com + U3D_U2PHYDCR0); tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); + writel(tmp, com + U3D_U2PHYDCR0); } dev_dbg(u3phy->dev, "%s(%d)\n", __func__, index); @@ -410,18 +461,55 @@ static void phy_instance_power_off(struct mt65xx_u3phy *u3phy, static void phy_instance_exit(struct mt65xx_u3phy *u3phy, struct mt65xx_phy_instance *instance) { - void __iomem *port_base = instance->port_base; + struct u2phy_banks *u2_banks = &instance->u2_banks; + void __iomem *com = u2_banks->com; u32 index = instance->index; u32 tmp; if (u3phy->pdata->avoid_rx_sen_degradation && index) { - tmp = readl(port_base + U3D_U2PHYDCR0); + tmp = readl(com + U3D_U2PHYDCR0); tmp &= ~P2C_RG_SIF_U2PLL_FORCE_ON; - writel(tmp, port_base + U3D_U2PHYDCR0); + writel(tmp, com + U3D_U2PHYDCR0); - tmp = readl(port_base + U3P_U2PHYDTM0); + tmp = readl(com + U3P_U2PHYDTM0); tmp &= ~P2C_FORCE_SUSPENDM; - writel(tmp, port_base + U3P_U2PHYDTM0); + writel(tmp, com + U3P_U2PHYDTM0); + } +} + +static void phy_v1_banks_init(struct mt65xx_u3phy *u3phy, + struct mt65xx_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + struct u3phy_banks *u3_banks = &instance->u3_banks; + + if (instance->type == PHY_TYPE_USB2) { + u2_banks->misc = NULL; + u2_banks->fmreg = u3phy->sif_base + SSUSB_SIFSLV_V1_U2FREQ; + u2_banks->com = instance->port_base + SSUSB_SIFSLV_V1_U2PHY_COM; + } else if (instance->type == PHY_TYPE_USB3) { + u3_banks->spllc = u3phy->sif_base + SSUSB_SIFSLV_V1_SPLLC; + u3_banks->chip = NULL; + u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V1_U3PHYD; + u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V1_U3PHYA; + } +} + +static void phy_v2_banks_init(struct mt65xx_u3phy *u3phy, + struct mt65xx_phy_instance *instance) +{ + struct u2phy_banks *u2_banks = &instance->u2_banks; + struct u3phy_banks *u3_banks = &instance->u3_banks; + + if (instance->type == PHY_TYPE_USB2) { + u2_banks->misc = instance->port_base + SSUSB_SIFSLV_V2_MISC; + u2_banks->fmreg = instance->port_base + SSUSB_SIFSLV_V2_U2FREQ; + u2_banks->com = instance->port_base + SSUSB_SIFSLV_V2_U2PHY_COM; + } else if (instance->type == PHY_TYPE_USB3) { + u3_banks->spllc = instance->port_base + SSUSB_SIFSLV_V2_SPLLC; + u3_banks->chip = instance->port_base + SSUSB_SIFSLV_V2_CHIP; + u3_banks->phyd = instance->port_base + SSUSB_SIFSLV_V2_U3PHYD; + u3_banks->phya = instance->port_base + SSUSB_SIFSLV_V2_U3PHYA; } } @@ -437,7 +525,17 @@ static int mt65xx_phy_init(struct phy *phy) return ret; } - phy_instance_init(u3phy, instance); + ret = clk_prepare_enable(instance->ref_clk); + if (ret) { + dev_err(u3phy->dev, "failed to enable ref_clk\n"); + return ret; + } + + if (instance->type == PHY_TYPE_USB2) + phy_instance_init(u3phy, instance); + else + u3_phy_instance_init(u3phy, instance); + return 0; } @@ -446,8 +544,10 @@ static int mt65xx_phy_power_on(struct phy *phy) struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); struct mt65xx_u3phy *u3phy = dev_get_drvdata(phy->dev.parent); - phy_instance_power_on(u3phy, instance); - hs_slew_rate_calibrate(u3phy, instance); + if (instance->type == PHY_TYPE_USB2) { + phy_instance_power_on(u3phy, instance); + hs_slew_rate_calibrate(u3phy, instance); + } return 0; } @@ -456,7 +556,9 @@ static int mt65xx_phy_power_off(struct phy *phy) struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); struct mt65xx_u3phy *u3phy = dev_get_drvdata(phy->dev.parent); - phy_instance_power_off(u3phy, instance); + if (instance->type == PHY_TYPE_USB2) + phy_instance_power_off(u3phy, instance); + return 0; } @@ -465,7 +567,10 @@ static int mt65xx_phy_exit(struct phy *phy) struct mt65xx_phy_instance *instance = phy_get_drvdata(phy); struct mt65xx_u3phy *u3phy = dev_get_drvdata(phy->dev.parent); - phy_instance_exit(u3phy, instance); + if (instance->type == PHY_TYPE_USB2) + phy_instance_exit(u3phy, instance); + + clk_disable_unprepare(instance->ref_clk); clk_disable_unprepare(u3phy->u3phya_ref); return 0; } @@ -478,7 +583,6 @@ static struct phy *mt65xx_phy_xlate(struct device *dev, struct device_node *phy_np = args->np; int index; - if (args->args_count != 1) { dev_err(dev, "invalid number of cells in 'phy' property\n"); return ERR_PTR(-EINVAL); @@ -496,13 +600,21 @@ static struct phy *mt65xx_phy_xlate(struct device *dev, } instance->type = args->args[0]; - if (!(instance->type == PHY_TYPE_USB2 || instance->type == PHY_TYPE_USB3)) { dev_err(dev, "unsupported device type: %d\n", instance->type); return ERR_PTR(-EINVAL); } + if (u3phy->pdata->version == MT_PHY_V1) { + phy_v1_banks_init(u3phy, instance); + } else if (u3phy->pdata->version == MT_PHY_V2) { + phy_v2_banks_init(u3phy, instance); + } else { + dev_err(dev, "phy version is not supported\n"); + return ERR_PTR(-EINVAL); + } + return instance->phy; } @@ -516,14 +628,22 @@ static const struct phy_ops mt65xx_u3phy_ops = { static const struct mt65xx_phy_pdata mt2701_pdata = { .avoid_rx_sen_degradation = false, + .version = MT_PHY_V1, +}; + +static const struct mt65xx_phy_pdata mt2712_pdata = { + .avoid_rx_sen_degradation = false, + .version = MT_PHY_V2, }; static const struct mt65xx_phy_pdata mt8173_pdata = { .avoid_rx_sen_degradation = true, + .version = MT_PHY_V1, }; static const struct of_device_id mt65xx_u3phy_id_table[] = { { .compatible = "mediatek,mt2701-u3phy", .data = &mt2701_pdata }, + { .compatible = "mediatek,mt2712-u3phy", .data = &mt2712_pdata }, { .compatible = "mediatek,mt8173-u3phy", .data = &mt8173_pdata }, { }, }; @@ -559,17 +679,23 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev) u3phy->dev = dev; platform_set_drvdata(pdev, u3phy); - sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - u3phy->sif_base = devm_ioremap_resource(dev, sif_res); - if (IS_ERR(u3phy->sif_base)) { - dev_err(dev, "failed to remap sif regs\n"); - return PTR_ERR(u3phy->sif_base); + if (u3phy->pdata->version == MT_PHY_V1) { + /* get banks shared by multiple phys */ + sif_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + u3phy->sif_base = devm_ioremap_resource(dev, sif_res); + if (IS_ERR(u3phy->sif_base)) { + dev_err(dev, "failed to remap sif regs\n"); + return PTR_ERR(u3phy->sif_base); + } } + /* it's deprecated, make it optional for backward compatibility */ u3phy->u3phya_ref = devm_clk_get(dev, "u3phya_ref"); if (IS_ERR(u3phy->u3phya_ref)) { - dev_err(dev, "error to get u3phya_ref\n"); - return PTR_ERR(u3phy->u3phya_ref); + if (PTR_ERR(u3phy->u3phya_ref) == -EPROBE_DEFER) + return -EPROBE_DEFER; + + u3phy->u3phya_ref = NULL; } port = 0; @@ -610,6 +736,17 @@ static int mt65xx_u3phy_probe(struct platform_device *pdev) instance->index = port; phy_set_drvdata(phy, instance); port++; + + /* if deprecated clock is provided, ignore instance's one */ + if (u3phy->u3phya_ref) + continue; + + instance->ref_clk = devm_clk_get(&phy->dev, "ref"); + if (IS_ERR(instance->ref_clk)) { + dev_err(dev, "failed to get ref_clk(id-%d)\n", port); + retval = PTR_ERR(instance->ref_clk); + goto put_child; + } } provider = devm_of_phy_provider_register(dev, mt65xx_phy_xlate); diff --git a/drivers/phy/phy-qcom-qmp.c b/drivers/phy/phy-qcom-qmp.c new file mode 100644 index 000000000000..727e23be7cac --- /dev/null +++ b/drivers/phy/phy-qcom-qmp.c @@ -0,0 +1,1153 @@ +/* + * Copyright (c) 2017, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include <linux/clk.h> +#include <linux/clk-provider.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/iopoll.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/of_address.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regulator/consumer.h> +#include <linux/reset.h> +#include <linux/slab.h> + +#include <dt-bindings/phy/phy.h> + +/* QMP PHY QSERDES COM registers */ +#define QSERDES_COM_BG_TIMER 0x00c +#define QSERDES_COM_SSC_EN_CENTER 0x010 +#define QSERDES_COM_SSC_ADJ_PER1 0x014 +#define QSERDES_COM_SSC_ADJ_PER2 0x018 +#define QSERDES_COM_SSC_PER1 0x01c +#define QSERDES_COM_SSC_PER2 0x020 +#define QSERDES_COM_SSC_STEP_SIZE1 0x024 +#define QSERDES_COM_SSC_STEP_SIZE2 0x028 +#define QSERDES_COM_BIAS_EN_CLKBUFLR_EN 0x034 +#define QSERDES_COM_CLK_ENABLE1 0x038 +#define QSERDES_COM_SYS_CLK_CTRL 0x03c +#define QSERDES_COM_SYSCLK_BUF_ENABLE 0x040 +#define QSERDES_COM_PLL_IVCO 0x048 +#define QSERDES_COM_LOCK_CMP1_MODE0 0x04c +#define QSERDES_COM_LOCK_CMP2_MODE0 0x050 +#define QSERDES_COM_LOCK_CMP3_MODE0 0x054 +#define QSERDES_COM_LOCK_CMP1_MODE1 0x058 +#define QSERDES_COM_LOCK_CMP2_MODE1 0x05c +#define QSERDES_COM_LOCK_CMP3_MODE1 0x060 +#define QSERDES_COM_BG_TRIM 0x070 +#define QSERDES_COM_CLK_EP_DIV 0x074 +#define QSERDES_COM_CP_CTRL_MODE0 0x078 +#define QSERDES_COM_CP_CTRL_MODE1 0x07c +#define QSERDES_COM_PLL_RCTRL_MODE0 0x084 +#define QSERDES_COM_PLL_RCTRL_MODE1 0x088 +#define QSERDES_COM_PLL_CCTRL_MODE0 0x090 +#define QSERDES_COM_PLL_CCTRL_MODE1 0x094 +#define QSERDES_COM_SYSCLK_EN_SEL 0x0ac +#define QSERDES_COM_RESETSM_CNTRL 0x0b4 +#define QSERDES_COM_RESTRIM_CTRL 0x0bc +#define QSERDES_COM_RESCODE_DIV_NUM 0x0c4 +#define QSERDES_COM_LOCK_CMP_EN 0x0c8 +#define QSERDES_COM_LOCK_CMP_CFG 0x0cc +#define QSERDES_COM_DEC_START_MODE0 0x0d0 +#define QSERDES_COM_DEC_START_MODE1 0x0d4 +#define QSERDES_COM_DIV_FRAC_START1_MODE0 0x0dc +#define QSERDES_COM_DIV_FRAC_START2_MODE0 0x0e0 +#define QSERDES_COM_DIV_FRAC_START3_MODE0 0x0e4 +#define QSERDES_COM_DIV_FRAC_START1_MODE1 0x0e8 +#define QSERDES_COM_DIV_FRAC_START2_MODE1 0x0ec +#define QSERDES_COM_DIV_FRAC_START3_MODE1 0x0f0 +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE0 0x108 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE0 0x10c +#define QSERDES_COM_INTEGLOOP_GAIN0_MODE1 0x110 +#define QSERDES_COM_INTEGLOOP_GAIN1_MODE1 0x114 +#define QSERDES_COM_VCO_TUNE_CTRL 0x124 +#define QSERDES_COM_VCO_TUNE_MAP 0x128 +#define QSERDES_COM_VCO_TUNE1_MODE0 0x12c +#define QSERDES_COM_VCO_TUNE2_MODE0 0x130 +#define QSERDES_COM_VCO_TUNE1_MODE1 0x134 +#define QSERDES_COM_VCO_TUNE2_MODE1 0x138 +#define QSERDES_COM_VCO_TUNE_TIMER1 0x144 +#define QSERDES_COM_VCO_TUNE_TIMER2 0x148 +#define QSERDES_COM_BG_CTRL 0x170 +#define QSERDES_COM_CLK_SELECT 0x174 +#define QSERDES_COM_HSCLK_SEL 0x178 +#define QSERDES_COM_CORECLK_DIV 0x184 +#define QSERDES_COM_CORE_CLK_EN 0x18c +#define QSERDES_COM_C_READY_STATUS 0x190 +#define QSERDES_COM_CMN_CONFIG 0x194 +#define QSERDES_COM_SVS_MODE_CLK_SEL 0x19c +#define QSERDES_COM_DEBUG_BUS0 0x1a0 +#define QSERDES_COM_DEBUG_BUS1 0x1a4 +#define QSERDES_COM_DEBUG_BUS2 0x1a8 +#define QSERDES_COM_DEBUG_BUS3 0x1ac +#define QSERDES_COM_DEBUG_BUS_SEL 0x1b0 +#define QSERDES_COM_CORECLK_DIV_MODE1 0x1bc + +/* QMP PHY TX registers */ +#define QSERDES_TX_RES_CODE_LANE_OFFSET 0x054 +#define QSERDES_TX_DEBUG_BUS_SEL 0x064 +#define QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN 0x068 +#define QSERDES_TX_LANE_MODE 0x094 +#define QSERDES_TX_RCV_DETECT_LVL_2 0x0ac + +/* QMP PHY RX registers */ +#define QSERDES_RX_UCDR_SO_GAIN_HALF 0x010 +#define QSERDES_RX_UCDR_SO_GAIN 0x01c +#define QSERDES_RX_UCDR_FASTLOCK_FO_GAIN 0x040 +#define QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE 0x048 +#define QSERDES_RX_RX_TERM_BW 0x090 +#define QSERDES_RX_RX_EQ_GAIN1_LSB 0x0c4 +#define QSERDES_RX_RX_EQ_GAIN1_MSB 0x0c8 +#define QSERDES_RX_RX_EQ_GAIN2_LSB 0x0cc +#define QSERDES_RX_RX_EQ_GAIN2_MSB 0x0d0 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2 0x0d8 +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3 0x0dc +#define QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4 0x0e0 +#define QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1 0x108 +#define QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2 0x10c +#define QSERDES_RX_SIGDET_ENABLES 0x110 +#define QSERDES_RX_SIGDET_CNTRL 0x114 +#define QSERDES_RX_SIGDET_LVL 0x118 +#define QSERDES_RX_SIGDET_DEGLITCH_CNTRL 0x11c +#define QSERDES_RX_RX_BAND 0x120 +#define QSERDES_RX_RX_INTERFACE_MODE 0x12c + +/* QMP PHY PCS registers */ +#define QPHY_POWER_DOWN_CONTROL 0x04 +#define QPHY_TXDEEMPH_M6DB_V0 0x24 +#define QPHY_TXDEEMPH_M3P5DB_V0 0x28 +#define QPHY_ENDPOINT_REFCLK_DRIVE 0x54 +#define QPHY_RX_IDLE_DTCT_CNTRL 0x58 +#define QPHY_POWER_STATE_CONFIG1 0x60 +#define QPHY_POWER_STATE_CONFIG2 0x64 +#define QPHY_POWER_STATE_CONFIG4 0x6c +#define QPHY_LOCK_DETECT_CONFIG1 0x80 +#define QPHY_LOCK_DETECT_CONFIG2 0x84 +#define QPHY_LOCK_DETECT_CONFIG3 0x88 +#define QPHY_PWRUP_RESET_DLY_TIME_AUXCLK 0xa0 +#define QPHY_LP_WAKEUP_DLY_TIME_AUXCLK 0xa4 + +/* QPHY_SW_RESET bit */ +#define SW_RESET BIT(0) +/* QPHY_POWER_DOWN_CONTROL */ +#define SW_PWRDN BIT(0) +#define REFCLK_DRV_DSBL BIT(1) +/* QPHY_START_CONTROL bits */ +#define SERDES_START BIT(0) +#define PCS_START BIT(1) +#define PLL_READY_GATE_EN BIT(3) +/* QPHY_PCS_STATUS bit */ +#define PHYSTATUS BIT(6) +/* QPHY_COM_PCS_READY_STATUS bit */ +#define PCS_READY BIT(0) + +#define PHY_INIT_COMPLETE_TIMEOUT 1000 +#define POWER_DOWN_DELAY_US_MIN 10 +#define POWER_DOWN_DELAY_US_MAX 11 + +#define MAX_PROP_NAME 32 + +struct qmp_phy_init_tbl { + unsigned int offset; + unsigned int val; + /* + * register part of layout ? + * if yes, then offset gives index in the reg-layout + */ + int in_layout; +}; + +#define QMP_PHY_INIT_CFG(o, v) \ + { \ + .offset = o, \ + .val = v, \ + } + +#define QMP_PHY_INIT_CFG_L(o, v) \ + { \ + .offset = o, \ + .val = v, \ + .in_layout = 1, \ + } + +/* set of registers with offsets different per-PHY */ +enum qphy_reg_layout { + /* Common block control registers */ + QPHY_COM_SW_RESET, + QPHY_COM_POWER_DOWN_CONTROL, + QPHY_COM_START_CONTROL, + QPHY_COM_PCS_READY_STATUS, + /* PCS registers */ + QPHY_PLL_LOCK_CHK_DLY_TIME, + QPHY_FLL_CNTRL1, + QPHY_FLL_CNTRL2, + QPHY_FLL_CNT_VAL_L, + QPHY_FLL_CNT_VAL_H_TOL, + QPHY_FLL_MAN_CODE, + QPHY_SW_RESET, + QPHY_START_CTRL, + QPHY_PCS_READY_STATUS, +}; + +static const unsigned int pciephy_regs_layout[] = { + [QPHY_COM_SW_RESET] = 0x400, + [QPHY_COM_POWER_DOWN_CONTROL] = 0x404, + [QPHY_COM_START_CONTROL] = 0x408, + [QPHY_COM_PCS_READY_STATUS] = 0x448, + [QPHY_PLL_LOCK_CHK_DLY_TIME] = 0xa8, + [QPHY_FLL_CNTRL1] = 0xc4, + [QPHY_FLL_CNTRL2] = 0xc8, + [QPHY_FLL_CNT_VAL_L] = 0xcc, + [QPHY_FLL_CNT_VAL_H_TOL] = 0xd0, + [QPHY_FLL_MAN_CODE] = 0xd4, + [QPHY_SW_RESET] = 0x00, + [QPHY_START_CTRL] = 0x08, + [QPHY_PCS_READY_STATUS] = 0x174, +}; + +static const unsigned int usb3phy_regs_layout[] = { + [QPHY_FLL_CNTRL1] = 0xc0, + [QPHY_FLL_CNTRL2] = 0xc4, + [QPHY_FLL_CNT_VAL_L] = 0xc8, + [QPHY_FLL_CNT_VAL_H_TOL] = 0xcc, + [QPHY_FLL_MAN_CODE] = 0xd0, + [QPHY_SW_RESET] = 0x00, + [QPHY_START_CTRL] = 0x08, + [QPHY_PCS_READY_STATUS] = 0x17c, +}; + +static const struct qmp_phy_init_tbl msm8996_pcie_serdes_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x1c), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33), + QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_EN, 0x42), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER1, 0xff), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_TIMER2, 0x1f), + QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_CORECLK_DIV, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x09), + QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x1a), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x0a), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x33), + QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x02), + QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_BUF_ENABLE, 0x1f), + QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x04), + QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN1_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x02), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0x2f), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x19), + QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x15), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_EP_DIV, 0x19), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_ENABLE1, 0x10), + QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_RESCODE_DIV_NUM, 0x40), +}; + +static const struct qmp_phy_init_tbl msm8996_pcie_tx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45), + QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06), +}; + +static const struct qmp_phy_init_tbl msm8996_pcie_rx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_ENABLES, 0x1c), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x00), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xdb), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_BAND, 0x18), + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04), + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN_HALF, 0x04), + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_SATURATION_AND_ENABLE, 0x4b), + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x14), + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x19), +}; + +static const struct qmp_phy_init_tbl msm8996_pcie_pcs_tbl[] = { + QMP_PHY_INIT_CFG(QPHY_RX_IDLE_DTCT_CNTRL, 0x4c), + QMP_PHY_INIT_CFG(QPHY_PWRUP_RESET_DLY_TIME_AUXCLK, 0x00), + QMP_PHY_INIT_CFG(QPHY_LP_WAKEUP_DLY_TIME_AUXCLK, 0x01), + + QMP_PHY_INIT_CFG_L(QPHY_PLL_LOCK_CHK_DLY_TIME, 0x05), + + QMP_PHY_INIT_CFG(QPHY_ENDPOINT_REFCLK_DRIVE, 0x05), + QMP_PHY_INIT_CFG(QPHY_POWER_DOWN_CONTROL, 0x02), + QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG4, 0x00), + QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG1, 0xa3), + QMP_PHY_INIT_CFG(QPHY_TXDEEMPH_M3P5DB_V0, 0x0e), +}; + +static const struct qmp_phy_init_tbl msm8996_usb3_serdes_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_COM_SYSCLK_EN_SEL, 0x14), + QMP_PHY_INIT_CFG(QSERDES_COM_BIAS_EN_CLKBUFLR_EN, 0x08), + QMP_PHY_INIT_CFG(QSERDES_COM_CLK_SELECT, 0x30), + QMP_PHY_INIT_CFG(QSERDES_COM_CMN_CONFIG, 0x06), + QMP_PHY_INIT_CFG(QSERDES_COM_SVS_MODE_CLK_SEL, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_HSCLK_SEL, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TRIM, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_IVCO, 0x0f), + QMP_PHY_INIT_CFG(QSERDES_COM_SYS_CLK_CTRL, 0x04), + /* PLL and Loop filter settings */ + QMP_PHY_INIT_CFG(QSERDES_COM_DEC_START_MODE0, 0x82), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START1_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START2_MODE0, 0x55), + QMP_PHY_INIT_CFG(QSERDES_COM_DIV_FRAC_START3_MODE0, 0x03), + QMP_PHY_INIT_CFG(QSERDES_COM_CP_CTRL_MODE0, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_RCTRL_MODE0, 0x16), + QMP_PHY_INIT_CFG(QSERDES_COM_PLL_CCTRL_MODE0, 0x28), + QMP_PHY_INIT_CFG(QSERDES_COM_INTEGLOOP_GAIN0_MODE0, 0x80), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_CTRL, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP1_MODE0, 0x15), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP2_MODE0, 0x34), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP3_MODE0, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_CORE_CLK_EN, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_LOCK_CMP_CFG, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_VCO_TUNE_MAP, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_BG_TIMER, 0x0a), + /* SSC settings */ + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_EN_CENTER, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER1, 0x31), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_PER2, 0x01), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER1, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_ADJ_PER2, 0x00), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE1, 0xde), + QMP_PHY_INIT_CFG(QSERDES_COM_SSC_STEP_SIZE2, 0x07), +}; + +static const struct qmp_phy_init_tbl msm8996_usb3_tx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_TX_HIGHZ_TRANSCEIVEREN_BIAS_DRVR_EN, 0x45), + QMP_PHY_INIT_CFG(QSERDES_TX_RCV_DETECT_LVL_2, 0x12), + QMP_PHY_INIT_CFG(QSERDES_TX_LANE_MODE, 0x06), +}; + +static const struct qmp_phy_init_tbl msm8996_usb3_rx_tbl[] = { + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_FASTLOCK_FO_GAIN, 0x0b), + QMP_PHY_INIT_CFG(QSERDES_RX_UCDR_SO_GAIN, 0x04), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL2, 0x02), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL3, 0x4c), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQU_ADAPTOR_CNTRL4, 0xbb), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_EQ_OFFSET_ADAPTOR_CNTRL1, 0x77), + QMP_PHY_INIT_CFG(QSERDES_RX_RX_OFFSET_ADAPTOR_CNTRL2, 0x80), + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_CNTRL, 0x03), + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_LVL, 0x18), + QMP_PHY_INIT_CFG(QSERDES_RX_SIGDET_DEGLITCH_CNTRL, 0x16), +}; + +static const struct qmp_phy_init_tbl msm8996_usb3_pcs_tbl[] = { + /* FLL settings */ + QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL2, 0x03), + QMP_PHY_INIT_CFG_L(QPHY_FLL_CNTRL1, 0x02), + QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_L, 0x09), + QMP_PHY_INIT_CFG_L(QPHY_FLL_CNT_VAL_H_TOL, 0x42), + QMP_PHY_INIT_CFG_L(QPHY_FLL_MAN_CODE, 0x85), + + /* Lock Det settings */ + QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG1, 0xd1), + QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG2, 0x1f), + QMP_PHY_INIT_CFG(QPHY_LOCK_DETECT_CONFIG3, 0x47), + QMP_PHY_INIT_CFG(QPHY_POWER_STATE_CONFIG2, 0x08), +}; + +/* struct qmp_phy_cfg - per-PHY initialization config */ +struct qmp_phy_cfg { + /* phy-type - PCIE/UFS/USB */ + unsigned int type; + /* number of lanes provided by phy */ + int nlanes; + + /* Init sequence for PHY blocks - serdes, tx, rx, pcs */ + const struct qmp_phy_init_tbl *serdes_tbl; + int serdes_tbl_num; + const struct qmp_phy_init_tbl *tx_tbl; + int tx_tbl_num; + const struct qmp_phy_init_tbl *rx_tbl; + int rx_tbl_num; + const struct qmp_phy_init_tbl *pcs_tbl; + int pcs_tbl_num; + + /* clock ids to be requested */ + const char * const *clk_list; + int num_clks; + /* resets to be requested */ + const char * const *reset_list; + int num_resets; + /* regulators to be requested */ + const char * const *vreg_list; + int num_vregs; + + /* array of registers with different offsets */ + const unsigned int *regs; + + unsigned int start_ctrl; + unsigned int pwrdn_ctrl; + unsigned int mask_pcs_ready; + unsigned int mask_com_pcs_ready; + + /* true, if PHY has a separate PHY_COM control block */ + bool has_phy_com_ctrl; + /* true, if PHY has a reset for individual lanes */ + bool has_lane_rst; + /* true, if PHY needs delay after POWER_DOWN */ + bool has_pwrdn_delay; + /* power_down delay in usec */ + int pwrdn_delay_min; + int pwrdn_delay_max; +}; + +/** + * struct qmp_phy - per-lane phy descriptor + * + * @phy: generic phy + * @tx: iomapped memory space for lane's tx + * @rx: iomapped memory space for lane's rx + * @pcs: iomapped memory space for lane's pcs + * @pipe_clk: pipe lock + * @index: lane index + * @qmp: QMP phy to which this lane belongs + * @lane_rst: lane's reset controller + */ +struct qmp_phy { + struct phy *phy; + void __iomem *tx; + void __iomem *rx; + void __iomem *pcs; + struct clk *pipe_clk; + unsigned int index; + struct qcom_qmp *qmp; + struct reset_control *lane_rst; +}; + +/** + * struct qcom_qmp - structure holding QMP phy block attributes + * + * @dev: device + * @serdes: iomapped memory space for phy's serdes + * + * @clks: array of clocks required by phy + * @resets: array of resets required by phy + * @vregs: regulator supplies bulk data + * + * @cfg: phy specific configuration + * @phys: array of per-lane phy descriptors + * @phy_mutex: mutex lock for PHY common block initialization + * @init_count: phy common block initialization count + */ +struct qcom_qmp { + struct device *dev; + void __iomem *serdes; + + struct clk **clks; + struct reset_control **resets; + struct regulator_bulk_data *vregs; + + const struct qmp_phy_cfg *cfg; + struct qmp_phy **phys; + + struct mutex phy_mutex; + int init_count; +}; + +static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val) +{ + u32 reg; + + reg = readl(base + offset); + reg |= val; + writel(reg, base + offset); + + /* ensure that above write is through */ + readl(base + offset); +} + +static inline void qphy_clrbits(void __iomem *base, u32 offset, u32 val) +{ + u32 reg; + + reg = readl(base + offset); + reg &= ~val; + writel(reg, base + offset); + + /* ensure that above write is through */ + readl(base + offset); +} + +/* list of clocks required by phy */ +static const char * const msm8996_phy_clk_l[] = { + "aux", "cfg_ahb", "ref", +}; + +/* list of resets */ +static const char * const msm8996_pciephy_reset_l[] = { + "phy", "common", "cfg", +}; + +static const char * const msm8996_usb3phy_reset_l[] = { + "phy", "common", +}; + +/* list of regulators */ +static const char * const msm8996_phy_vreg_l[] = { + "vdda-phy", "vdda-pll", +}; + +static const struct qmp_phy_cfg msm8996_pciephy_cfg = { + .type = PHY_TYPE_PCIE, + .nlanes = 3, + + .serdes_tbl = msm8996_pcie_serdes_tbl, + .serdes_tbl_num = ARRAY_SIZE(msm8996_pcie_serdes_tbl), + .tx_tbl = msm8996_pcie_tx_tbl, + .tx_tbl_num = ARRAY_SIZE(msm8996_pcie_tx_tbl), + .rx_tbl = msm8996_pcie_rx_tbl, + .rx_tbl_num = ARRAY_SIZE(msm8996_pcie_rx_tbl), + .pcs_tbl = msm8996_pcie_pcs_tbl, + .pcs_tbl_num = ARRAY_SIZE(msm8996_pcie_pcs_tbl), + .clk_list = msm8996_phy_clk_l, + .num_clks = ARRAY_SIZE(msm8996_phy_clk_l), + .reset_list = msm8996_pciephy_reset_l, + .num_resets = ARRAY_SIZE(msm8996_pciephy_reset_l), + .vreg_list = msm8996_phy_vreg_l, + .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), + .regs = pciephy_regs_layout, + + .start_ctrl = PCS_START | PLL_READY_GATE_EN, + .pwrdn_ctrl = SW_PWRDN | REFCLK_DRV_DSBL, + .mask_com_pcs_ready = PCS_READY, + + .has_phy_com_ctrl = true, + .has_lane_rst = true, + .has_pwrdn_delay = true, + .pwrdn_delay_min = POWER_DOWN_DELAY_US_MIN, + .pwrdn_delay_max = POWER_DOWN_DELAY_US_MAX, +}; + +static const struct qmp_phy_cfg msm8996_usb3phy_cfg = { + .type = PHY_TYPE_USB3, + .nlanes = 1, + + .serdes_tbl = msm8996_usb3_serdes_tbl, + .serdes_tbl_num = ARRAY_SIZE(msm8996_usb3_serdes_tbl), + .tx_tbl = msm8996_usb3_tx_tbl, + .tx_tbl_num = ARRAY_SIZE(msm8996_usb3_tx_tbl), + .rx_tbl = msm8996_usb3_rx_tbl, + .rx_tbl_num = ARRAY_SIZE(msm8996_usb3_rx_tbl), + .pcs_tbl = msm8996_usb3_pcs_tbl, + .pcs_tbl_num = ARRAY_SIZE(msm8996_usb3_pcs_tbl), + .clk_list = msm8996_phy_clk_l, + .num_clks = ARRAY_SIZE(msm8996_phy_clk_l), + .reset_list = msm8996_usb3phy_reset_l, + .num_resets = ARRAY_SIZE(msm8996_usb3phy_reset_l), + .vreg_list = msm8996_phy_vreg_l, + .num_vregs = ARRAY_SIZE(msm8996_phy_vreg_l), + .regs = usb3phy_regs_layout, + + .start_ctrl = SERDES_START | PCS_START, + .pwrdn_ctrl = SW_PWRDN, + .mask_pcs_ready = PHYSTATUS, +}; + +static void qcom_qmp_phy_configure(void __iomem *base, + const unsigned int *regs, + const struct qmp_phy_init_tbl tbl[], + int num) +{ + int i; + const struct qmp_phy_init_tbl *t = tbl; + + if (!t) + return; + + for (i = 0; i < num; i++, t++) { + if (t->in_layout) + writel(t->val, base + regs[t->offset]); + else + writel(t->val, base + t->offset); + } +} + +static int qcom_qmp_phy_poweron(struct phy *phy) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + int num = qmp->cfg->num_vregs; + int ret; + + dev_vdbg(&phy->dev, "Powering on QMP phy\n"); + + /* turn on regulator supplies */ + ret = regulator_bulk_enable(num, qmp->vregs); + if (ret) { + dev_err(qmp->dev, "failed to enable regulators, err=%d\n", ret); + return ret; + } + + ret = clk_prepare_enable(qphy->pipe_clk); + if (ret) { + dev_err(qmp->dev, "pipe_clk enable failed, err=%d\n", ret); + regulator_bulk_disable(num, qmp->vregs); + return ret; + } + + return 0; +} + +static int qcom_qmp_phy_poweroff(struct phy *phy) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + + clk_disable_unprepare(qphy->pipe_clk); + + regulator_bulk_disable(qmp->cfg->num_vregs, qmp->vregs); + + return 0; +} + +static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp) +{ + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *serdes = qmp->serdes; + int ret, i; + + mutex_lock(&qmp->phy_mutex); + if (qmp->init_count++) { + mutex_unlock(&qmp->phy_mutex); + return 0; + } + + for (i = 0; i < cfg->num_resets; i++) { + ret = reset_control_deassert(qmp->resets[i]); + if (ret) { + dev_err(qmp->dev, "%s reset deassert failed\n", + qmp->cfg->reset_list[i]); + while (--i >= 0) + reset_control_assert(qmp->resets[i]); + goto err_rst; + } + } + + if (cfg->has_phy_com_ctrl) + qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], + SW_PWRDN); + + /* Serdes configuration */ + qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl, + cfg->serdes_tbl_num); + + if (cfg->has_phy_com_ctrl) { + void __iomem *status; + unsigned int mask, val; + + qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET], SW_RESET); + qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL], + SERDES_START | PCS_START); + + status = serdes + cfg->regs[QPHY_COM_PCS_READY_STATUS]; + mask = cfg->mask_com_pcs_ready; + + ret = readl_poll_timeout(status, val, (val & mask), 10, + PHY_INIT_COMPLETE_TIMEOUT); + if (ret) { + dev_err(qmp->dev, + "phy common block init timed-out\n"); + goto err_com_init; + } + } + + mutex_unlock(&qmp->phy_mutex); + + return 0; + +err_com_init: + while (--i >= 0) + reset_control_assert(qmp->resets[i]); +err_rst: + mutex_unlock(&qmp->phy_mutex); + return ret; +} + +static int qcom_qmp_phy_com_exit(struct qcom_qmp *qmp) +{ + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *serdes = qmp->serdes; + int i = cfg->num_resets; + + mutex_lock(&qmp->phy_mutex); + if (--qmp->init_count) { + mutex_unlock(&qmp->phy_mutex); + return 0; + } + + if (cfg->has_phy_com_ctrl) { + qphy_setbits(serdes, cfg->regs[QPHY_COM_START_CONTROL], + SERDES_START | PCS_START); + qphy_clrbits(serdes, cfg->regs[QPHY_COM_SW_RESET], + SW_RESET); + qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL], + SW_PWRDN); + } + + while (--i >= 0) + reset_control_assert(qmp->resets[i]); + + mutex_unlock(&qmp->phy_mutex); + + return 0; +} + +/* PHY Initialization */ +static int qcom_qmp_phy_init(struct phy *phy) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + void __iomem *tx = qphy->tx; + void __iomem *rx = qphy->rx; + void __iomem *pcs = qphy->pcs; + void __iomem *status; + unsigned int mask, val; + int ret, i; + + dev_vdbg(qmp->dev, "Initializing QMP phy\n"); + + for (i = 0; i < qmp->cfg->num_clks; i++) { + ret = clk_prepare_enable(qmp->clks[i]); + if (ret) { + dev_err(qmp->dev, "failed to enable %s clk, err=%d\n", + qmp->cfg->clk_list[i], ret); + while (--i >= 0) + clk_disable_unprepare(qmp->clks[i]); + } + } + + ret = qcom_qmp_phy_com_init(qmp); + if (ret) + goto err_com_init; + + if (cfg->has_lane_rst) { + ret = reset_control_deassert(qphy->lane_rst); + if (ret) { + dev_err(qmp->dev, "lane%d reset deassert failed\n", + qphy->index); + goto err_lane_rst; + } + } + + /* Tx, Rx, and PCS configurations */ + qcom_qmp_phy_configure(tx, cfg->regs, cfg->tx_tbl, cfg->tx_tbl_num); + qcom_qmp_phy_configure(rx, cfg->regs, cfg->rx_tbl, cfg->rx_tbl_num); + qcom_qmp_phy_configure(pcs, cfg->regs, cfg->pcs_tbl, cfg->pcs_tbl_num); + + /* + * Pull out PHY from POWER DOWN state. + * This is active low enable signal to power-down PHY. + */ + qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); + + if (cfg->has_pwrdn_delay) + usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max); + + /* start SerDes and Phy-Coding-Sublayer */ + qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); + + /* Pull PHY out of reset state */ + qphy_clrbits(pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + + status = pcs + cfg->regs[QPHY_PCS_READY_STATUS]; + mask = cfg->mask_pcs_ready; + + ret = readl_poll_timeout(status, val, !(val & mask), 1, + PHY_INIT_COMPLETE_TIMEOUT); + if (ret) { + dev_err(qmp->dev, "phy initialization timed-out\n"); + goto err_pcs_ready; + } + + return ret; + +err_pcs_ready: + if (cfg->has_lane_rst) + reset_control_assert(qphy->lane_rst); +err_lane_rst: + qcom_qmp_phy_com_exit(qmp); +err_com_init: + while (--i >= 0) + clk_disable_unprepare(qmp->clks[i]); + + return ret; +} + +static int qcom_qmp_phy_exit(struct phy *phy) +{ + struct qmp_phy *qphy = phy_get_drvdata(phy); + struct qcom_qmp *qmp = qphy->qmp; + const struct qmp_phy_cfg *cfg = qmp->cfg; + int i = cfg->num_clks; + + /* PHY reset */ + qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET); + + /* stop SerDes and Phy-Coding-Sublayer */ + qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl); + + /* Put PHY into POWER DOWN state: active low */ + qphy_clrbits(qphy->pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl); + + if (cfg->has_lane_rst) + reset_control_assert(qphy->lane_rst); + + qcom_qmp_phy_com_exit(qmp); + + while (--i >= 0) + clk_disable_unprepare(qmp->clks[i]); + + return 0; +} + +static int qcom_qmp_phy_vreg_init(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + int num = qmp->cfg->num_vregs; + int i; + + qmp->vregs = devm_kcalloc(dev, num, sizeof(qmp->vregs), GFP_KERNEL); + if (!qmp->vregs) + return -ENOMEM; + + for (i = 0; i < num; i++) + qmp->vregs[i].supply = qmp->cfg->vreg_list[i]; + + return devm_regulator_bulk_get(dev, num, qmp->vregs); +} + +static int qcom_qmp_phy_reset_init(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + int i; + + qmp->resets = devm_kcalloc(dev, qmp->cfg->num_resets, + sizeof(*qmp->resets), GFP_KERNEL); + if (!qmp->resets) + return -ENOMEM; + + for (i = 0; i < qmp->cfg->num_resets; i++) { + struct reset_control *rst; + const char *name = qmp->cfg->reset_list[i]; + + rst = devm_reset_control_get(dev, name); + if (IS_ERR(rst)) { + dev_err(dev, "failed to get %s reset\n", name); + return PTR_ERR(rst); + } + qmp->resets[i] = rst; + } + + return 0; +} + +static int qcom_qmp_phy_clk_init(struct device *dev) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + int ret, i; + + qmp->clks = devm_kcalloc(dev, qmp->cfg->num_clks, + sizeof(*qmp->clks), GFP_KERNEL); + if (!qmp->clks) + return -ENOMEM; + + for (i = 0; i < qmp->cfg->num_clks; i++) { + struct clk *_clk; + const char *name = qmp->cfg->clk_list[i]; + + _clk = devm_clk_get(dev, name); + if (IS_ERR(_clk)) { + ret = PTR_ERR(_clk); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to get %s clk, %d\n", + name, ret); + return ret; + } + qmp->clks[i] = _clk; + } + + return 0; +} + +/* + * Register a fixed rate pipe clock. + * + * The <s>_pipe_clksrc generated by PHY goes to the GCC that gate + * controls it. The <s>_pipe_clk coming out of the GCC is requested + * by the PHY driver for its operations. + * We register the <s>_pipe_clksrc here. The gcc driver takes care + * of assigning this <s>_pipe_clksrc as parent to <s>_pipe_clk. + * Below picture shows this relationship. + * + * +---------------+ + * | PHY block |<<---------------------------------------+ + * | | | + * | +-------+ | +-----+ | + * I/P---^-->| PLL |---^--->pipe_clksrc--->| GCC |--->pipe_clk---+ + * clk | +-------+ | +-----+ + * +---------------+ + */ +static int phy_pipe_clk_register(struct qcom_qmp *qmp, int id) +{ + char name[24]; + struct clk_fixed_rate *fixed; + struct clk_init_data init = { }; + + switch (qmp->cfg->type) { + case PHY_TYPE_USB3: + snprintf(name, sizeof(name), "usb3_phy_pipe_clk_src"); + break; + case PHY_TYPE_PCIE: + snprintf(name, sizeof(name), "pcie_%d_pipe_clk_src", id); + break; + default: + /* not all phys register pipe clocks, so return success */ + return 0; + } + + fixed = devm_kzalloc(qmp->dev, sizeof(*fixed), GFP_KERNEL); + if (!fixed) + return -ENOMEM; + + init.name = name; + init.ops = &clk_fixed_rate_ops; + + /* controllers using QMP phys use 125MHz pipe clock interface */ + fixed->fixed_rate = 125000000; + fixed->hw.init = &init; + + return devm_clk_hw_register(qmp->dev, &fixed->hw); +} + +static const struct phy_ops qcom_qmp_phy_gen_ops = { + .init = qcom_qmp_phy_init, + .exit = qcom_qmp_phy_exit, + .power_on = qcom_qmp_phy_poweron, + .power_off = qcom_qmp_phy_poweroff, + .owner = THIS_MODULE, +}; + +static +int qcom_qmp_phy_create(struct device *dev, struct device_node *np, int id) +{ + struct qcom_qmp *qmp = dev_get_drvdata(dev); + struct phy *generic_phy; + struct qmp_phy *qphy; + char prop_name[MAX_PROP_NAME]; + int ret; + + qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL); + if (!qphy) + return -ENOMEM; + + /* + * Get memory resources for each phy lane: + * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2. + */ + qphy->tx = of_iomap(np, 0); + if (IS_ERR(qphy->tx)) + return PTR_ERR(qphy->tx); + + qphy->rx = of_iomap(np, 1); + if (IS_ERR(qphy->rx)) + return PTR_ERR(qphy->rx); + + qphy->pcs = of_iomap(np, 2); + if (IS_ERR(qphy->pcs)) + return PTR_ERR(qphy->pcs); + + /* + * Get PHY's Pipe clock, if any. USB3 and PCIe are PIPE3 + * based phys, so they essentially have pipe clock. So, + * we return error in case phy is USB3 or PIPE type. + * Otherwise, we initialize pipe clock to NULL for + * all phys that don't need this. + */ + snprintf(prop_name, sizeof(prop_name), "pipe%d", id); + qphy->pipe_clk = of_clk_get_by_name(np, prop_name); + if (IS_ERR(qphy->pipe_clk)) { + if (qmp->cfg->type == PHY_TYPE_PCIE || + qmp->cfg->type == PHY_TYPE_USB3) { + ret = PTR_ERR(qphy->pipe_clk); + if (ret != -EPROBE_DEFER) + dev_err(dev, + "failed to get lane%d pipe_clk, %d\n", + id, ret); + return ret; + } + qphy->pipe_clk = NULL; + } + + /* Get lane reset, if any */ + if (qmp->cfg->has_lane_rst) { + snprintf(prop_name, sizeof(prop_name), "lane%d", id); + qphy->lane_rst = of_reset_control_get(np, prop_name); + if (IS_ERR(qphy->lane_rst)) { + dev_err(dev, "failed to get lane%d reset\n", id); + return PTR_ERR(qphy->lane_rst); + } + } + + generic_phy = devm_phy_create(dev, np, &qcom_qmp_phy_gen_ops); + if (IS_ERR(generic_phy)) { + ret = PTR_ERR(generic_phy); + dev_err(dev, "failed to create qphy %d\n", ret); + return ret; + } + + qphy->phy = generic_phy; + qphy->index = id; + qphy->qmp = qmp; + qmp->phys[id] = qphy; + phy_set_drvdata(generic_phy, qphy); + + return 0; +} + +static const struct of_device_id qcom_qmp_phy_of_match_table[] = { + { + .compatible = "qcom,msm8996-qmp-pcie-phy", + .data = &msm8996_pciephy_cfg, + }, { + .compatible = "qcom,msm8996-qmp-usb3-phy", + .data = &msm8996_usb3phy_cfg, + }, + { }, +}; +MODULE_DEVICE_TABLE(of, qcom_qmp_phy_of_match_table); + +static int qcom_qmp_phy_probe(struct platform_device *pdev) +{ + struct qcom_qmp *qmp; + struct device *dev = &pdev->dev; + struct resource *res; + struct device_node *child; + struct phy_provider *phy_provider; + void __iomem *base; + int num, id; + int ret; + + qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL); + if (!qmp) + return -ENOMEM; + + qmp->dev = dev; + dev_set_drvdata(dev, qmp); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + base = devm_ioremap_resource(dev, res); + if (IS_ERR(base)) + return PTR_ERR(base); + + /* per PHY serdes; usually located at base address */ + qmp->serdes = base; + + mutex_init(&qmp->phy_mutex); + + /* Get the specific init parameters of QMP phy */ + qmp->cfg = of_device_get_match_data(dev); + + ret = qcom_qmp_phy_clk_init(dev); + if (ret) + return ret; + + ret = qcom_qmp_phy_reset_init(dev); + if (ret) + return ret; + + ret = qcom_qmp_phy_vreg_init(dev); + if (ret) { + dev_err(dev, "failed to get regulator supplies\n"); + return ret; + } + + num = of_get_available_child_count(dev->of_node); + /* do we have a rogue child node ? */ + if (num > qmp->cfg->nlanes) + return -EINVAL; + + qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL); + if (!qmp->phys) + return -ENOMEM; + + id = 0; + for_each_available_child_of_node(dev->of_node, child) { + /* Create per-lane phy */ + ret = qcom_qmp_phy_create(dev, child, id); + if (ret) { + dev_err(dev, "failed to create lane%d phy, %d\n", + id, ret); + return ret; + } + + /* + * Register the pipe clock provided by phy. + * See function description to see details of this pipe clock. + */ + ret = phy_pipe_clk_register(qmp, id); + if (ret) { + dev_err(qmp->dev, + "failed to register pipe clock source\n"); + return ret; + } + id++; + } + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (!IS_ERR(phy_provider)) + dev_info(dev, "Registered Qcom-QMP phy\n"); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static struct platform_driver qcom_qmp_phy_driver = { + .probe = qcom_qmp_phy_probe, + .driver = { + .name = "qcom-qmp-phy", + .of_match_table = qcom_qmp_phy_of_match_table, + }, +}; + +module_platform_driver(qcom_qmp_phy_driver); + +MODULE_AUTHOR("Vivek Gautam <vivek.gautam@codeaurora.org>"); +MODULE_DESCRIPTION("Qualcomm QMP PHY driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/phy-qcom-qusb2.c b/drivers/phy/phy-qcom-qusb2.c new file mode 100644 index 000000000000..6c575244c0fb --- /dev/null +++ b/drivers/phy/phy-qcom-qusb2.c @@ -0,0 +1,493 @@ +/* + * Copyright (c) 2017, The Linux Foundation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 and + * only version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/err.h> +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/nvmem-consumer.h> +#include <linux/of.h> +#include <linux/of_device.h> +#include <linux/phy/phy.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/reset.h> +#include <linux/slab.h> + +#define QUSB2PHY_PLL_TEST 0x04 +#define CLK_REF_SEL BIT(7) + +#define QUSB2PHY_PLL_TUNE 0x08 +#define QUSB2PHY_PLL_USER_CTL1 0x0c +#define QUSB2PHY_PLL_USER_CTL2 0x10 +#define QUSB2PHY_PLL_AUTOPGM_CTL1 0x1c +#define QUSB2PHY_PLL_PWR_CTRL 0x18 + +#define QUSB2PHY_PLL_STATUS 0x38 +#define PLL_LOCKED BIT(5) + +#define QUSB2PHY_PORT_TUNE1 0x80 +#define QUSB2PHY_PORT_TUNE2 0x84 +#define QUSB2PHY_PORT_TUNE3 0x88 +#define QUSB2PHY_PORT_TUNE4 0x8c +#define QUSB2PHY_PORT_TUNE5 0x90 +#define QUSB2PHY_PORT_TEST2 0x9c + +#define QUSB2PHY_PORT_POWERDOWN 0xb4 +#define CLAMP_N_EN BIT(5) +#define FREEZIO_N BIT(1) +#define POWER_DOWN BIT(0) + +#define QUSB2PHY_REFCLK_ENABLE BIT(0) + +#define PHY_CLK_SCHEME_SEL BIT(0) + +struct qusb2_phy_init_tbl { + unsigned int offset; + unsigned int val; +}; + +#define QUSB2_PHY_INIT_CFG(o, v) \ + { \ + .offset = o, \ + .val = v, \ + } + +static const struct qusb2_phy_init_tbl msm8996_init_tbl[] = { + QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE1, 0xf8), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE2, 0xb3), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE3, 0x83), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TUNE4, 0xc0), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_TUNE, 0x30), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL1, 0x79), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_USER_CTL2, 0x21), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PORT_TEST2, 0x14), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_AUTOPGM_CTL1, 0x9f), + QUSB2_PHY_INIT_CFG(QUSB2PHY_PLL_PWR_CTRL, 0x00), +}; + +struct qusb2_phy_cfg { + const struct qusb2_phy_init_tbl *tbl; + /* number of entries in the table */ + unsigned int tbl_num; + /* offset to PHY_CLK_SCHEME register in TCSR map */ + unsigned int clk_scheme_offset; +}; + +static const struct qusb2_phy_cfg msm8996_phy_cfg = { + .tbl = msm8996_init_tbl, + .tbl_num = ARRAY_SIZE(msm8996_init_tbl), +}; + +static const char * const qusb2_phy_vreg_names[] = { + "vdda-pll", "vdda-phy-dpdm", +}; + +#define QUSB2_NUM_VREGS ARRAY_SIZE(qusb2_phy_vreg_names) + +/** + * struct qusb2_phy - structure holding qusb2 phy attributes + * + * @phy: generic phy + * @base: iomapped memory space for qubs2 phy + * + * @cfg_ahb_clk: AHB2PHY interface clock + * @ref_clk: phy reference clock + * @iface_clk: phy interface clock + * @phy_reset: phy reset control + * @vregs: regulator supplies bulk data + * + * @tcsr: TCSR syscon register map + * @cell: nvmem cell containing phy tuning value + * + * @cfg: phy config data + * @has_se_clk_scheme: indicate if PHY has single-ended ref clock scheme + */ +struct qusb2_phy { + struct phy *phy; + void __iomem *base; + + struct clk *cfg_ahb_clk; + struct clk *ref_clk; + struct clk *iface_clk; + struct reset_control *phy_reset; + struct regulator_bulk_data vregs[QUSB2_NUM_VREGS]; + + struct regmap *tcsr; + struct nvmem_cell *cell; + + const struct qusb2_phy_cfg *cfg; + bool has_se_clk_scheme; +}; + +static inline void qusb2_setbits(void __iomem *base, u32 offset, u32 val) +{ + u32 reg; + + reg = readl(base + offset); + reg |= val; + writel(reg, base + offset); + + /* Ensure above write is completed */ + readl(base + offset); +} + +static inline void qusb2_clrbits(void __iomem *base, u32 offset, u32 val) +{ + u32 reg; + + reg = readl(base + offset); + reg &= ~val; + writel(reg, base + offset); + + /* Ensure above write is completed */ + readl(base + offset); +} + +static inline +void qcom_qusb2_phy_configure(void __iomem *base, + const struct qusb2_phy_init_tbl tbl[], int num) +{ + int i; + + for (i = 0; i < num; i++) + writel(tbl[i].val, base + tbl[i].offset); +} + +/* + * Fetches HS Tx tuning value from nvmem and sets the + * QUSB2PHY_PORT_TUNE2 register. + * For error case, skip setting the value and use the default value. + */ +static void qusb2_phy_set_tune2_param(struct qusb2_phy *qphy) +{ + struct device *dev = &qphy->phy->dev; + u8 *val; + + /* + * Read efuse register having TUNE2 parameter's high nibble. + * If efuse register shows value as 0x0, or if we fail to find + * a valid efuse register settings, then use default value + * as 0xB for high nibble that we have already set while + * configuring phy. + */ + val = nvmem_cell_read(qphy->cell, NULL); + if (IS_ERR(val) || !val[0]) { + dev_dbg(dev, "failed to read a valid hs-tx trim value\n"); + return; + } + + /* Fused TUNE2 value is the higher nibble only */ + qusb2_setbits(qphy->base, QUSB2PHY_PORT_TUNE2, val[0] << 0x4); +} + +static int qusb2_phy_poweron(struct phy *phy) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + int num = ARRAY_SIZE(qphy->vregs); + int ret; + + dev_vdbg(&phy->dev, "%s(): Powering-on QUSB2 phy\n", __func__); + + /* turn on regulator supplies */ + ret = regulator_bulk_enable(num, qphy->vregs); + if (ret) + return ret; + + ret = clk_prepare_enable(qphy->iface_clk); + if (ret) { + dev_err(&phy->dev, "failed to enable iface_clk, %d\n", ret); + regulator_bulk_disable(num, qphy->vregs); + return ret; + } + + return 0; +} + +static int qusb2_phy_poweroff(struct phy *phy) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + + clk_disable_unprepare(qphy->iface_clk); + + regulator_bulk_disable(ARRAY_SIZE(qphy->vregs), qphy->vregs); + + return 0; +} + +static int qusb2_phy_init(struct phy *phy) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + unsigned int val; + unsigned int clk_scheme; + int ret; + + dev_vdbg(&phy->dev, "%s(): Initializing QUSB2 phy\n", __func__); + + /* enable ahb interface clock to program phy */ + ret = clk_prepare_enable(qphy->cfg_ahb_clk); + if (ret) { + dev_err(&phy->dev, "failed to enable cfg ahb clock, %d\n", ret); + return ret; + } + + /* Perform phy reset */ + ret = reset_control_assert(qphy->phy_reset); + if (ret) { + dev_err(&phy->dev, "failed to assert phy_reset, %d\n", ret); + goto disable_ahb_clk; + } + + /* 100 us delay to keep PHY in reset mode */ + usleep_range(100, 150); + + ret = reset_control_deassert(qphy->phy_reset); + if (ret) { + dev_err(&phy->dev, "failed to de-assert phy_reset, %d\n", ret); + goto disable_ahb_clk; + } + + /* Disable the PHY */ + qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, + CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + + /* save reset value to override reference clock scheme later */ + val = readl(qphy->base + QUSB2PHY_PLL_TEST); + + qcom_qusb2_phy_configure(qphy->base, qphy->cfg->tbl, + qphy->cfg->tbl_num); + + /* Set efuse value for tuning the PHY */ + qusb2_phy_set_tune2_param(qphy); + + /* Enable the PHY */ + qusb2_clrbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, POWER_DOWN); + + /* Required to get phy pll lock successfully */ + usleep_range(150, 160); + + /* Default is single-ended clock on msm8996 */ + qphy->has_se_clk_scheme = true; + /* + * read TCSR_PHY_CLK_SCHEME register to check if single-ended + * clock scheme is selected. If yes, then disable differential + * ref_clk and use single-ended clock, otherwise use differential + * ref_clk only. + */ + if (qphy->tcsr) { + ret = regmap_read(qphy->tcsr, qphy->cfg->clk_scheme_offset, + &clk_scheme); + if (ret) { + dev_err(&phy->dev, "failed to read clk scheme reg\n"); + goto assert_phy_reset; + } + + /* is it a differential clock scheme ? */ + if (!(clk_scheme & PHY_CLK_SCHEME_SEL)) { + dev_vdbg(&phy->dev, "%s(): select differential clk\n", + __func__); + qphy->has_se_clk_scheme = false; + } else { + dev_vdbg(&phy->dev, "%s(): select single-ended clk\n", + __func__); + } + } + + if (!qphy->has_se_clk_scheme) { + val &= ~CLK_REF_SEL; + ret = clk_prepare_enable(qphy->ref_clk); + if (ret) { + dev_err(&phy->dev, "failed to enable ref clk, %d\n", + ret); + goto assert_phy_reset; + } + } else { + val |= CLK_REF_SEL; + } + + writel(val, qphy->base + QUSB2PHY_PLL_TEST); + + /* ensure above write is through */ + readl(qphy->base + QUSB2PHY_PLL_TEST); + + /* Required to get phy pll lock successfully */ + usleep_range(100, 110); + + val = readb(qphy->base + QUSB2PHY_PLL_STATUS); + if (!(val & PLL_LOCKED)) { + dev_err(&phy->dev, + "QUSB2PHY pll lock failed: status reg = %x\n", val); + ret = -EBUSY; + goto disable_ref_clk; + } + + return 0; + +disable_ref_clk: + if (!qphy->has_se_clk_scheme) + clk_disable_unprepare(qphy->ref_clk); +assert_phy_reset: + reset_control_assert(qphy->phy_reset); +disable_ahb_clk: + clk_disable_unprepare(qphy->cfg_ahb_clk); + return ret; +} + +static int qusb2_phy_exit(struct phy *phy) +{ + struct qusb2_phy *qphy = phy_get_drvdata(phy); + + /* Disable the PHY */ + qusb2_setbits(qphy->base, QUSB2PHY_PORT_POWERDOWN, + CLAMP_N_EN | FREEZIO_N | POWER_DOWN); + + if (!qphy->has_se_clk_scheme) + clk_disable_unprepare(qphy->ref_clk); + + reset_control_assert(qphy->phy_reset); + + clk_disable_unprepare(qphy->cfg_ahb_clk); + + return 0; +} + +static const struct phy_ops qusb2_phy_gen_ops = { + .init = qusb2_phy_init, + .exit = qusb2_phy_exit, + .power_on = qusb2_phy_poweron, + .power_off = qusb2_phy_poweroff, + .owner = THIS_MODULE, +}; + +static const struct of_device_id qusb2_phy_of_match_table[] = { + { + .compatible = "qcom,msm8996-qusb2-phy", + .data = &msm8996_phy_cfg, + }, + { }, +}; +MODULE_DEVICE_TABLE(of, qusb2_phy_of_match_table); + +static int qusb2_phy_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct qusb2_phy *qphy; + struct phy_provider *phy_provider; + struct phy *generic_phy; + struct resource *res; + int ret, i; + int num; + + qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL); + if (!qphy) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + qphy->base = devm_ioremap_resource(dev, res); + if (IS_ERR(qphy->base)) + return PTR_ERR(qphy->base); + + qphy->cfg_ahb_clk = devm_clk_get(dev, "cfg_ahb"); + if (IS_ERR(qphy->cfg_ahb_clk)) { + ret = PTR_ERR(qphy->cfg_ahb_clk); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to get cfg ahb clk, %d\n", ret); + return ret; + } + + qphy->ref_clk = devm_clk_get(dev, "ref"); + if (IS_ERR(qphy->ref_clk)) { + ret = PTR_ERR(qphy->ref_clk); + if (ret != -EPROBE_DEFER) + dev_err(dev, "failed to get ref clk, %d\n", ret); + return ret; + } + + qphy->iface_clk = devm_clk_get(dev, "iface"); + if (IS_ERR(qphy->iface_clk)) { + ret = PTR_ERR(qphy->iface_clk); + if (ret == -EPROBE_DEFER) + return ret; + qphy->iface_clk = NULL; + dev_dbg(dev, "failed to get iface clk, %d\n", ret); + } + + qphy->phy_reset = devm_reset_control_get_by_index(&pdev->dev, 0); + if (IS_ERR(qphy->phy_reset)) { + dev_err(dev, "failed to get phy core reset\n"); + return PTR_ERR(qphy->phy_reset); + } + + num = ARRAY_SIZE(qphy->vregs); + for (i = 0; i < num; i++) + qphy->vregs[i].supply = qusb2_phy_vreg_names[i]; + + ret = devm_regulator_bulk_get(dev, num, qphy->vregs); + if (ret) { + dev_err(dev, "failed to get regulator supplies\n"); + return ret; + } + + /* Get the specific init parameters of QMP phy */ + qphy->cfg = of_device_get_match_data(dev); + + qphy->tcsr = syscon_regmap_lookup_by_phandle(dev->of_node, + "qcom,tcsr-syscon"); + if (IS_ERR(qphy->tcsr)) { + dev_dbg(dev, "failed to lookup TCSR regmap\n"); + qphy->tcsr = NULL; + } + + qphy->cell = devm_nvmem_cell_get(dev, NULL); + if (IS_ERR(qphy->cell)) { + if (PTR_ERR(qphy->cell) == -EPROBE_DEFER) + return -EPROBE_DEFER; + qphy->cell = NULL; + dev_dbg(dev, "failed to lookup tune2 hstx trim value\n"); + } + + generic_phy = devm_phy_create(dev, NULL, &qusb2_phy_gen_ops); + if (IS_ERR(generic_phy)) { + ret = PTR_ERR(generic_phy); + dev_err(dev, "failed to create phy, %d\n", ret); + return ret; + } + qphy->phy = generic_phy; + + dev_set_drvdata(dev, qphy); + phy_set_drvdata(generic_phy, qphy); + + phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); + if (!IS_ERR(phy_provider)) + dev_info(dev, "Registered Qcom-QUSB2 phy\n"); + + return PTR_ERR_OR_ZERO(phy_provider); +} + +static struct platform_driver qusb2_phy_driver = { + .probe = qusb2_phy_probe, + .driver = { + .name = "qcom-qusb2-phy", + .of_match_table = qusb2_phy_of_match_table, + }, +}; + +module_platform_driver(qusb2_phy_driver); + +MODULE_AUTHOR("Vivek Gautam <vivek.gautam@codeaurora.org>"); +MODULE_DESCRIPTION("Qualcomm QUSB2 PHY driver"); +MODULE_LICENSE("GPL v2"); diff --git a/drivers/phy/phy-rcar-gen3-usb2.c b/drivers/phy/phy-rcar-gen3-usb2.c index afb4d048d3e9..54c34298a000 100644 --- a/drivers/phy/phy-rcar-gen3-usb2.c +++ b/drivers/phy/phy-rcar-gen3-usb2.c @@ -20,6 +20,7 @@ #include <linux/of_address.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> +#include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <linux/workqueue.h> @@ -395,7 +396,7 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) struct rcar_gen3_chan *channel; struct phy_provider *provider; struct resource *res; - int irq; + int irq, ret = 0; if (!dev->of_node) { dev_err(dev, "This driver needs device tree\n"); @@ -434,17 +435,24 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) } } - /* devm_phy_create() will call pm_runtime_enable(dev); */ + /* + * devm_phy_create() will call pm_runtime_enable(&phy->dev); + * And then, phy-core will manage runtime pm for this device. + */ + pm_runtime_enable(dev); channel->phy = devm_phy_create(dev, NULL, &rcar_gen3_phy_usb2_ops); if (IS_ERR(channel->phy)) { dev_err(dev, "Failed to create USB2 PHY\n"); - return PTR_ERR(channel->phy); + ret = PTR_ERR(channel->phy); + goto error; } channel->vbus = devm_regulator_get_optional(dev, "vbus"); if (IS_ERR(channel->vbus)) { - if (PTR_ERR(channel->vbus) == -EPROBE_DEFER) - return PTR_ERR(channel->vbus); + if (PTR_ERR(channel->vbus) == -EPROBE_DEFER) { + ret = PTR_ERR(channel->vbus); + goto error; + } channel->vbus = NULL; } @@ -454,15 +462,22 @@ static int rcar_gen3_phy_usb2_probe(struct platform_device *pdev) provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate); if (IS_ERR(provider)) { dev_err(dev, "Failed to register PHY provider\n"); + ret = PTR_ERR(provider); + goto error; } else if (channel->has_otg) { int ret; ret = device_create_file(dev, &dev_attr_role); if (ret < 0) - return ret; + goto error; } - return PTR_ERR_OR_ZERO(provider); + return 0; + +error: + pm_runtime_disable(dev); + + return ret; } static int rcar_gen3_phy_usb2_remove(struct platform_device *pdev) @@ -472,6 +487,8 @@ static int rcar_gen3_phy_usb2_remove(struct platform_device *pdev) if (channel->has_otg) device_remove_file(&pdev->dev, &dev_attr_role); + pm_runtime_disable(&pdev->dev); + return 0; }; diff --git a/drivers/phy/phy-rockchip-inno-usb2.c b/drivers/phy/phy-rockchip-inno-usb2.c index 4ea95c28a66f..8efe78a49916 100644 --- a/drivers/phy/phy-rockchip-inno-usb2.c +++ b/drivers/phy/phy-rockchip-inno-usb2.c @@ -554,8 +554,7 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work) case USB_CHG_STATE_DETECTED: switch (rphy->chg_type) { case POWER_SUPPLY_TYPE_USB: - dev_dbg(&rport->phy->dev, - "sdp cable is connecetd\n"); + dev_dbg(&rport->phy->dev, "sdp cable is connected\n"); rockchip_usb2phy_power_on(rport->phy); rport->state = OTG_STATE_B_PERIPHERAL; notify_charger = true; @@ -563,16 +562,14 @@ static void rockchip_usb2phy_otg_sm_work(struct work_struct *work) cable = EXTCON_CHG_USB_SDP; break; case POWER_SUPPLY_TYPE_USB_DCP: - dev_dbg(&rport->phy->dev, - "dcp cable is connecetd\n"); + dev_dbg(&rport->phy->dev, "dcp cable is connected\n"); rockchip_usb2phy_power_off(rport->phy); notify_charger = true; sch_work = true; cable = EXTCON_CHG_USB_DCP; break; case POWER_SUPPLY_TYPE_USB_CDP: - dev_dbg(&rport->phy->dev, - "cdp cable is connecetd\n"); + dev_dbg(&rport->phy->dev, "cdp cable is connected\n"); rockchip_usb2phy_power_on(rport->phy); rport->state = OTG_STATE_B_PERIPHERAL; notify_charger = true; @@ -1141,6 +1138,49 @@ disable_clks: return ret; } +static const struct rockchip_usb2phy_cfg rk3328_phy_cfgs[] = { + { + .reg = 0x100, + .num_ports = 2, + .clkout_ctl = { 0x108, 4, 4, 1, 0 }, + .port_cfgs = { + [USB2PHY_PORT_OTG] = { + .phy_sus = { 0x0100, 15, 0, 0, 0x1d1 }, + .bvalid_det_en = { 0x0110, 2, 2, 0, 1 }, + .bvalid_det_st = { 0x0114, 2, 2, 0, 1 }, + .bvalid_det_clr = { 0x0118, 2, 2, 0, 1 }, + .ls_det_en = { 0x0110, 0, 0, 0, 1 }, + .ls_det_st = { 0x0114, 0, 0, 0, 1 }, + .ls_det_clr = { 0x0118, 0, 0, 0, 1 }, + .utmi_avalid = { 0x0120, 10, 10, 0, 1 }, + .utmi_bvalid = { 0x0120, 9, 9, 0, 1 }, + .utmi_ls = { 0x0120, 5, 4, 0, 1 }, + }, + [USB2PHY_PORT_HOST] = { + .phy_sus = { 0x104, 15, 0, 0, 0x1d1 }, + .ls_det_en = { 0x110, 1, 1, 0, 1 }, + .ls_det_st = { 0x114, 1, 1, 0, 1 }, + .ls_det_clr = { 0x118, 1, 1, 0, 1 }, + .utmi_ls = { 0x120, 17, 16, 0, 1 }, + .utmi_hstdet = { 0x120, 19, 19, 0, 1 } + } + }, + .chg_det = { + .opmode = { 0x0100, 3, 0, 5, 1 }, + .cp_det = { 0x0120, 24, 24, 0, 1 }, + .dcp_det = { 0x0120, 23, 23, 0, 1 }, + .dp_det = { 0x0120, 25, 25, 0, 1 }, + .idm_sink_en = { 0x0108, 8, 8, 0, 1 }, + .idp_sink_en = { 0x0108, 7, 7, 0, 1 }, + .idp_src_en = { 0x0108, 9, 9, 0, 1 }, + .rdm_pdwn_en = { 0x0108, 10, 10, 0, 1 }, + .vdm_src_en = { 0x0108, 12, 12, 0, 1 }, + .vdp_src_en = { 0x0108, 11, 11, 0, 1 }, + }, + }, + { /* sentinel */ } +}; + static const struct rockchip_usb2phy_cfg rk3366_phy_cfgs[] = { { .reg = 0x700, @@ -1223,6 +1263,7 @@ static const struct rockchip_usb2phy_cfg rk3399_phy_cfgs[] = { }; static const struct of_device_id rockchip_usb2phy_dt_match[] = { + { .compatible = "rockchip,rk3328-usb2phy", .data = &rk3328_phy_cfgs }, { .compatible = "rockchip,rk3366-usb2phy", .data = &rk3366_phy_cfgs }, { .compatible = "rockchip,rk3399-usb2phy", .data = &rk3399_phy_cfgs }, {} diff --git a/drivers/phy/phy-rockchip-usb.c b/drivers/phy/phy-rockchip-usb.c index 734987fa0ad7..3378eeb7a562 100644 --- a/drivers/phy/phy-rockchip-usb.c +++ b/drivers/phy/phy-rockchip-usb.c @@ -66,6 +66,7 @@ struct rockchip_usb_phy { struct phy *phy; bool uart_enabled; struct reset_control *reset; + struct regulator *vbus; }; static int rockchip_usb_phy_power(struct rockchip_usb_phy *phy, @@ -88,6 +89,9 @@ static void rockchip_usb_phy480m_disable(struct clk_hw *hw) struct rockchip_usb_phy, clk480m_hw); + if (phy->vbus) + regulator_disable(phy->vbus); + /* Power down usb phy analog blocks by set siddq 1 */ rockchip_usb_phy_power(phy, 1); } @@ -143,6 +147,14 @@ static int rockchip_usb_phy_power_on(struct phy *_phy) if (phy->uart_enabled) return -EBUSY; + if (phy->vbus) { + int ret; + + ret = regulator_enable(phy->vbus); + if (ret) + return ret; + } + return clk_prepare_enable(phy->clk480m); } @@ -268,6 +280,13 @@ static int rockchip_usb_phy_init(struct rockchip_usb_phy_base *base, } phy_set_drvdata(rk_phy->phy, rk_phy); + rk_phy->vbus = devm_regulator_get_optional(&rk_phy->phy->dev, "vbus"); + if (IS_ERR(rk_phy->vbus)) { + if (PTR_ERR(rk_phy->vbus) == -EPROBE_DEFER) + return PTR_ERR(rk_phy->vbus); + rk_phy->vbus = NULL; + } + /* * When acting as uart-pipe, just keep clock on otherwise * only power up usb phy when it use, so disable it when init diff --git a/drivers/phy/phy-sun4i-usb.c b/drivers/phy/phy-sun4i-usb.c index a21b5f24a340..bbf06cfe5898 100644 --- a/drivers/phy/phy-sun4i-usb.c +++ b/drivers/phy/phy-sun4i-usb.c @@ -49,12 +49,14 @@ #define REG_PHYBIST 0x08 #define REG_PHYTUNE 0x0c #define REG_PHYCTL_A33 0x10 -#define REG_PHY_UNK_H3 0x20 +#define REG_PHY_OTGCTL 0x20 #define REG_PMU_UNK1 0x10 #define PHYCTL_DATA BIT(7) +#define OTGCTL_ROUTE_MUSB BIT(0) + #define SUNXI_AHB_ICHR8_EN BIT(10) #define SUNXI_AHB_INCR4_BURST_EN BIT(9) #define SUNXI_AHB_INCRX_ALIGN_EN BIT(8) @@ -110,6 +112,7 @@ struct sun4i_usb_phy_cfg { u8 phyctl_offset; bool dedicated_clocks; bool enable_pmu_unk1; + bool phy0_dual_route; }; struct sun4i_usb_phy_data { @@ -188,10 +191,8 @@ static void sun4i_usb_phy_write(struct sun4i_usb_phy *phy, u32 addr, u32 data, spin_lock_irqsave(&phy_data->reg_lock, flags); - if (phy_data->cfg->type == sun8i_a33_phy || - phy_data->cfg->type == sun50i_a64_phy || - phy_data->cfg->type == sun8i_v3s_phy) { - /* A33 or A64 needs us to set phyctl to 0 explicitly */ + if (phy_data->cfg->phyctl_offset == REG_PHYCTL_A33) { + /* SoCs newer than A33 need us to set phyctl to 0 explicitly */ writel(0, phyctl); } @@ -271,23 +272,16 @@ static int sun4i_usb_phy_init(struct phy *_phy) writel(val & ~2, phy->pmu + REG_PMU_UNK1); } - if (data->cfg->type == sun8i_h3_phy) { - if (phy->index == 0) { - val = readl(data->base + REG_PHY_UNK_H3); - writel(val & ~1, data->base + REG_PHY_UNK_H3); - } - } else { - /* Enable USB 45 Ohm resistor calibration */ - if (phy->index == 0) - sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); + /* Enable USB 45 Ohm resistor calibration */ + if (phy->index == 0) + sun4i_usb_phy_write(phy, PHY_RES45_CAL_EN, 0x01, 1); - /* Adjust PHY's magnitude and rate */ - sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); + /* Adjust PHY's magnitude and rate */ + sun4i_usb_phy_write(phy, PHY_TX_AMPLITUDE_TUNE, 0x14, 5); - /* Disconnect threshold adjustment */ - sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, - data->cfg->disc_thresh, 2); - } + /* Disconnect threshold adjustment */ + sun4i_usb_phy_write(phy, PHY_DISCON_TH_SEL, + data->cfg->disc_thresh, 2); sun4i_usb_phy_passby(phy, 1); @@ -486,6 +480,21 @@ static const struct phy_ops sun4i_usb_phy_ops = { .owner = THIS_MODULE, }; +static void sun4i_usb_phy0_reroute(struct sun4i_usb_phy_data *data, int id_det) +{ + u32 regval; + + regval = readl(data->base + REG_PHY_OTGCTL); + if (id_det == 0) { + /* Host mode. Route phy0 to EHCI/OHCI */ + regval &= ~OTGCTL_ROUTE_MUSB; + } else { + /* Peripheral mode. Route phy0 to MUSB */ + regval |= OTGCTL_ROUTE_MUSB; + } + writel(regval, data->base + REG_PHY_OTGCTL); +} + static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) { struct sun4i_usb_phy_data *data = @@ -546,6 +555,10 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) sun4i_usb_phy0_set_vbus_detect(phy0, 1); mutex_unlock(&phy0->mutex); } + + /* Re-route PHY0 if necessary */ + if (data->cfg->phy0_dual_route) + sun4i_usb_phy0_reroute(data, id_det); } if (vbus_notify) @@ -700,7 +713,7 @@ static int sun4i_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(phy->reset); } - if (i) { /* No pmu for usbc0 */ + if (i || data->cfg->phy0_dual_route) { /* No pmu for musb */ snprintf(name, sizeof(name), "pmu%d", i); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, name); @@ -823,8 +836,10 @@ static const struct sun4i_usb_phy_cfg sun8i_h3_cfg = { .num_phys = 4, .type = sun8i_h3_phy, .disc_thresh = 3, + .phyctl_offset = REG_PHYCTL_A33, .dedicated_clocks = true, .enable_pmu_unk1 = true, + .phy0_dual_route = true, }; static const struct sun4i_usb_phy_cfg sun8i_v3s_cfg = { @@ -843,6 +858,7 @@ static const struct sun4i_usb_phy_cfg sun50i_a64_cfg = { .phyctl_offset = REG_PHYCTL_A33, .dedicated_clocks = true, .enable_pmu_unk1 = true, + .phy0_dual_route = true, }; static const struct of_device_id sun4i_usb_phy_of_match[] = { diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 4c360f8071a8..b1fc626125aa 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -104,4 +104,6 @@ source "drivers/staging/vc04_services/Kconfig" source "drivers/staging/bcm2835-audio/Kconfig" +source "drivers/staging/typec/Kconfig" + endif # STAGING diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 29cec5aa2945..682127c20da5 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -1,6 +1,7 @@ # Makefile for staging directory obj-y += media/ +obj-y += typec/ obj-$(CONFIG_PRISM2_USB) += wlan-ng/ obj-$(CONFIG_COMEDI) += comedi/ obj-$(CONFIG_FB_OLPC_DCON) += olpc_dcon/ @@ -41,4 +42,3 @@ obj-$(CONFIG_KS7010) += ks7010/ obj-$(CONFIG_GREYBUS) += greybus/ obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/ obj-$(CONFIG_SND_BCM2835) += bcm2835-audio/ - diff --git a/drivers/staging/typec/Kconfig b/drivers/staging/typec/Kconfig new file mode 100644 index 000000000000..37a0781b0d0c --- /dev/null +++ b/drivers/staging/typec/Kconfig @@ -0,0 +1,24 @@ +menu "USB Power Delivery and Type-C drivers" + +config TYPEC_TCPM + tristate "USB Type-C Port Controller Manager" + depends on USB + select TYPEC + help + The Type-C Port Controller Manager provides a USB PD and USB Type-C + state machine for use with Type-C Port Controllers. + +if TYPEC_TCPM + +config TYPEC_TCPCI + tristate "Type-C Port Controller Interface driver" + depends on I2C + select REGMAP_I2C + help + Type-C Port Controller driver for TCPCI-compliant controller. + +source "drivers/staging/typec/fusb302/Kconfig" + +endif + +endmenu diff --git a/drivers/staging/typec/Makefile b/drivers/staging/typec/Makefile new file mode 100644 index 000000000000..30a7e29cbc9e --- /dev/null +++ b/drivers/staging/typec/Makefile @@ -0,0 +1,3 @@ +obj-$(CONFIG_TYPEC_TCPM) += tcpm.o +obj-$(CONFIG_TYPEC_TCPCI) += tcpci.o +obj-y += fusb302/ diff --git a/drivers/staging/typec/TODO b/drivers/staging/typec/TODO new file mode 100644 index 000000000000..bc1f97a2d1bf --- /dev/null +++ b/drivers/staging/typec/TODO @@ -0,0 +1,15 @@ +tcpm: +- Add documentation (at the very least for the API to low level drivers) +- Split PD code into separate file +- Check if it makes sense to use tracepoints instead of debugfs for debug logs +- Implement Alternate Mode handling +- Address "#if 0" code if not addressed with the above +- Validate all comments marked with "XXX"; either address or remove comments +- Add support for USB PD 3.0. While not mandatory, at least fast role swap + as well as authentication support would be very desirable. + +tcpci: +- Test with real hardware + +Please send patches to Guenter Roeck <linux@roeck-us.net> and copy +Heikki Krogerus <heikki.krogerus@linux.intel.com>. diff --git a/drivers/staging/typec/fusb302/Kconfig b/drivers/staging/typec/fusb302/Kconfig new file mode 100644 index 000000000000..fce099ff39fe --- /dev/null +++ b/drivers/staging/typec/fusb302/Kconfig @@ -0,0 +1,7 @@ +config TYPEC_FUSB302 + tristate "Fairchild FUSB302 Type-C chip driver" + depends on I2C + help + The Fairchild FUSB302 Type-C chip driver that works with + Type-C Port Controller Manager to provide USB PD and USB + Type-C functionalities. diff --git a/drivers/staging/typec/fusb302/Makefile b/drivers/staging/typec/fusb302/Makefile new file mode 100644 index 000000000000..207efa5fbab8 --- /dev/null +++ b/drivers/staging/typec/fusb302/Makefile @@ -0,0 +1 @@ +obj-$(CONFIG_TYPEC_FUSB302) += fusb302.o diff --git a/drivers/staging/typec/fusb302/TODO b/drivers/staging/typec/fusb302/TODO new file mode 100644 index 000000000000..4933a1d92c32 --- /dev/null +++ b/drivers/staging/typec/fusb302/TODO @@ -0,0 +1,6 @@ +fusb302: +- Find a better logging scheme, at least not having the same debugging/logging + code replicated here and in tcpm +- Find a non-hacky way to coordinate between PM and I2C access +- Documentation? The FUSB302 datasheet provides information on the chip to help + understand the code. But it may still be helpful to have a documentation. diff --git a/drivers/staging/typec/fusb302/fusb302.c b/drivers/staging/typec/fusb302/fusb302.c new file mode 100644 index 000000000000..2cee9a952c9b --- /dev/null +++ b/drivers/staging/typec/fusb302/fusb302.c @@ -0,0 +1,1815 @@ +/* + * Copyright 2016-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Fairchild FUSB302 Type-C Chip Driver + */ + +#include <linux/debugfs.h> +#include <linux/delay.h> +#include <linux/errno.h> +#include <linux/gpio.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/of_device.h> +#include <linux/of_device.h> +#include <linux/of_gpio.h> +#include <linux/pinctrl/consumer.h> +#include <linux/proc_fs.h> +#include <linux/regulator/consumer.h> +#include <linux/sched/clock.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/string.h> +#include <linux/types.h> +#include <linux/usb/typec.h> +#include <linux/workqueue.h> + +#include "fusb302_reg.h" +#include "../tcpm.h" +#include "../pd.h" + +/* + * When the device is SNK, BC_LVL interrupt is used to monitor cc pins + * for the current capability offered by the SRC. As FUSB302 chip fires + * the BC_LVL interrupt on PD signalings, cc lvl should be handled after + * a delay to avoid measuring on PD activities. The delay is slightly + * longer than PD_T_PD_DEBPUNCE (10-20ms). + */ +#define T_BC_LVL_DEBOUNCE_DELAY_MS 30 + +enum toggling_mode { + TOGGLINE_MODE_OFF, + TOGGLING_MODE_DRP, + TOGGLING_MODE_SNK, + TOGGLING_MODE_SRC, +}; + +static const char * const toggling_mode_name[] = { + [TOGGLINE_MODE_OFF] = "toggling_OFF", + [TOGGLING_MODE_DRP] = "toggling_DRP", + [TOGGLING_MODE_SNK] = "toggling_SNK", + [TOGGLING_MODE_SRC] = "toggling_SRC", +}; + +enum src_current_status { + SRC_CURRENT_DEFAULT, + SRC_CURRENT_MEDIUM, + SRC_CURRENT_HIGH, +}; + +static const u8 ra_mda_value[] = { + [SRC_CURRENT_DEFAULT] = 4, /* 210mV */ + [SRC_CURRENT_MEDIUM] = 9, /* 420mV */ + [SRC_CURRENT_HIGH] = 18, /* 798mV */ +}; + +static const u8 rd_mda_value[] = { + [SRC_CURRENT_DEFAULT] = 38, /* 1638mV */ + [SRC_CURRENT_MEDIUM] = 38, /* 1638mV */ + [SRC_CURRENT_HIGH] = 61, /* 2604mV */ +}; + +#define LOG_BUFFER_ENTRIES 1024 +#define LOG_BUFFER_ENTRY_SIZE 128 + +struct fusb302_chip { + struct device *dev; + struct i2c_client *i2c_client; + struct tcpm_port *tcpm_port; + struct tcpc_dev tcpc_dev; + + struct regulator *vbus; + + int gpio_int_n; + int gpio_int_n_irq; + + struct workqueue_struct *wq; + struct delayed_work bc_lvl_handler; + + atomic_t pm_suspend; + atomic_t i2c_busy; + + /* lock for sharing chip states */ + struct mutex lock; + + /* chip status */ + enum toggling_mode toggling_mode; + enum src_current_status src_current_status; + bool intr_togdone; + bool intr_bc_lvl; + bool intr_comp_chng; + + /* port status */ + bool pull_up; + bool vconn_on; + bool vbus_on; + bool charge_on; + bool vbus_present; + enum typec_cc_polarity cc_polarity; + enum typec_cc_status cc1; + enum typec_cc_status cc2; + +#ifdef CONFIG_DEBUG_FS + struct dentry *dentry; + /* lock for log buffer access */ + struct mutex logbuffer_lock; + int logbuffer_head; + int logbuffer_tail; + u8 *logbuffer[LOG_BUFFER_ENTRIES]; +#endif +}; + +/* + * Logging + */ + +#ifdef CONFIG_DEBUG_FS + +static bool fusb302_log_full(struct fusb302_chip *chip) +{ + return chip->logbuffer_tail == + (chip->logbuffer_head + 1) % LOG_BUFFER_ENTRIES; +} + +static void _fusb302_log(struct fusb302_chip *chip, const char *fmt, + va_list args) +{ + char tmpbuffer[LOG_BUFFER_ENTRY_SIZE]; + u64 ts_nsec = local_clock(); + unsigned long rem_nsec; + + if (!chip->logbuffer[chip->logbuffer_head]) { + chip->logbuffer[chip->logbuffer_head] = + kzalloc(LOG_BUFFER_ENTRY_SIZE, GFP_KERNEL); + if (!chip->logbuffer[chip->logbuffer_head]) + return; + } + + vsnprintf(tmpbuffer, sizeof(tmpbuffer), fmt, args); + + mutex_lock(&chip->logbuffer_lock); + + if (fusb302_log_full(chip)) { + chip->logbuffer_head = max(chip->logbuffer_head - 1, 0); + strlcpy(tmpbuffer, "overflow", sizeof(tmpbuffer)); + } + + if (chip->logbuffer_head < 0 || + chip->logbuffer_head >= LOG_BUFFER_ENTRIES) { + dev_warn(chip->dev, + "Bad log buffer index %d\n", chip->logbuffer_head); + goto abort; + } + + if (!chip->logbuffer[chip->logbuffer_head]) { + dev_warn(chip->dev, + "Log buffer index %d is NULL\n", chip->logbuffer_head); + goto abort; + } + + rem_nsec = do_div(ts_nsec, 1000000000); + scnprintf(chip->logbuffer[chip->logbuffer_head], + LOG_BUFFER_ENTRY_SIZE, "[%5lu.%06lu] %s", + (unsigned long)ts_nsec, rem_nsec / 1000, + tmpbuffer); + chip->logbuffer_head = (chip->logbuffer_head + 1) % LOG_BUFFER_ENTRIES; + +abort: + mutex_unlock(&chip->logbuffer_lock); +} + +static void fusb302_log(struct fusb302_chip *chip, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + _fusb302_log(chip, fmt, args); + va_end(args); +} + +static int fusb302_seq_show(struct seq_file *s, void *v) +{ + struct fusb302_chip *chip = (struct fusb302_chip *)s->private; + int tail; + + mutex_lock(&chip->logbuffer_lock); + tail = chip->logbuffer_tail; + while (tail != chip->logbuffer_head) { + seq_printf(s, "%s\n", chip->logbuffer[tail]); + tail = (tail + 1) % LOG_BUFFER_ENTRIES; + } + if (!seq_has_overflowed(s)) + chip->logbuffer_tail = tail; + mutex_unlock(&chip->logbuffer_lock); + + return 0; +} + +static int fusb302_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, fusb302_seq_show, inode->i_private); +} + +static const struct file_operations fusb302_debug_operations = { + .open = fusb302_debug_open, + .llseek = seq_lseek, + .read = seq_read, + .release = single_release, +}; + +static struct dentry *rootdir; + +static int fusb302_debugfs_init(struct fusb302_chip *chip) +{ + mutex_init(&chip->logbuffer_lock); + if (!rootdir) { + rootdir = debugfs_create_dir("fusb302", NULL); + if (!rootdir) + return -ENOMEM; + } + + chip->dentry = debugfs_create_file(dev_name(chip->dev), + S_IFREG | 0444, rootdir, + chip, &fusb302_debug_operations); + + return 0; +} + +static void fusb302_debugfs_exit(struct fusb302_chip *chip) +{ + debugfs_remove(chip->dentry); +} + +#else + +static void fusb302_log(const struct fusb302_chip *chip, + const char *fmt, ...) { } +static int fusb302_debugfs_init(const struct fusb302_chip *chip) { return 0; } +static void fusb302_debugfs_exit(const struct fusb302_chip *chip) { } + +#endif + +#define FUSB302_RESUME_RETRY 10 +#define FUSB302_RESUME_RETRY_SLEEP 50 +static int fusb302_i2c_write(struct fusb302_chip *chip, + u8 address, u8 data) +{ + int retry_cnt; + int ret = 0; + + atomic_set(&chip->i2c_busy, 1); + for (retry_cnt = 0; retry_cnt < FUSB302_RESUME_RETRY; retry_cnt++) { + if (atomic_read(&chip->pm_suspend)) { + pr_err("fusb302_i2c: pm suspend, retry %d/%d\n", + retry_cnt + 1, FUSB302_RESUME_RETRY); + msleep(FUSB302_RESUME_RETRY_SLEEP); + } else { + break; + } + } + ret = i2c_smbus_write_byte_data(chip->i2c_client, address, data); + if (ret < 0) + fusb302_log(chip, "cannot write 0x%02x to 0x%02x, ret=%d", + data, address, ret); + atomic_set(&chip->i2c_busy, 0); + + return ret; +} + +static int fusb302_i2c_block_write(struct fusb302_chip *chip, u8 address, + u8 length, const u8 *data) +{ + int retry_cnt; + int ret = 0; + + if (length <= 0) + return ret; + atomic_set(&chip->i2c_busy, 1); + for (retry_cnt = 0; retry_cnt < FUSB302_RESUME_RETRY; retry_cnt++) { + if (atomic_read(&chip->pm_suspend)) { + pr_err("fusb302_i2c: pm suspend, retry %d/%d\n", + retry_cnt + 1, FUSB302_RESUME_RETRY); + msleep(FUSB302_RESUME_RETRY_SLEEP); + } else { + break; + } + } + ret = i2c_smbus_write_i2c_block_data(chip->i2c_client, address, + length, data); + if (ret < 0) + fusb302_log(chip, "cannot block write 0x%02x, len=%d, ret=%d", + address, length, ret); + atomic_set(&chip->i2c_busy, 0); + + return ret; +} + +static int fusb302_i2c_read(struct fusb302_chip *chip, + u8 address, u8 *data) +{ + int retry_cnt; + int ret = 0; + + atomic_set(&chip->i2c_busy, 1); + for (retry_cnt = 0; retry_cnt < FUSB302_RESUME_RETRY; retry_cnt++) { + if (atomic_read(&chip->pm_suspend)) { + pr_err("fusb302_i2c: pm suspend, retry %d/%d\n", + retry_cnt + 1, FUSB302_RESUME_RETRY); + msleep(FUSB302_RESUME_RETRY_SLEEP); + } else { + break; + } + } + ret = i2c_smbus_read_byte_data(chip->i2c_client, address); + *data = (u8)ret; + if (ret < 0) + fusb302_log(chip, "cannot read %02x, ret=%d", address, ret); + atomic_set(&chip->i2c_busy, 0); + + return ret; +} + +static int fusb302_i2c_block_read(struct fusb302_chip *chip, u8 address, + u8 length, u8 *data) +{ + int retry_cnt; + int ret = 0; + + if (length <= 0) + return ret; + atomic_set(&chip->i2c_busy, 1); + for (retry_cnt = 0; retry_cnt < FUSB302_RESUME_RETRY; retry_cnt++) { + if (atomic_read(&chip->pm_suspend)) { + pr_err("fusb302_i2c: pm suspend, retry %d/%d\n", + retry_cnt + 1, FUSB302_RESUME_RETRY); + msleep(FUSB302_RESUME_RETRY_SLEEP); + } else { + break; + } + } + ret = i2c_smbus_read_i2c_block_data(chip->i2c_client, address, + length, data); + if (ret < 0) { + fusb302_log(chip, "cannot block read 0x%02x, len=%d, ret=%d", + address, length, ret); + return ret; + } + if (ret != length) { + fusb302_log(chip, "only read %d/%d bytes from 0x%02x", + ret, length, address); + return -EIO; + } + atomic_set(&chip->i2c_busy, 0); + + return ret; +} + +static int fusb302_i2c_mask_write(struct fusb302_chip *chip, u8 address, + u8 mask, u8 value) +{ + int ret = 0; + u8 data; + + ret = fusb302_i2c_read(chip, address, &data); + if (ret < 0) + return ret; + data &= ~mask; + data |= value; + ret = fusb302_i2c_write(chip, address, data); + if (ret < 0) + return ret; + + return ret; +} + +static int fusb302_i2c_set_bits(struct fusb302_chip *chip, u8 address, + u8 set_bits) +{ + return fusb302_i2c_mask_write(chip, address, 0x00, set_bits); +} + +static int fusb302_i2c_clear_bits(struct fusb302_chip *chip, u8 address, + u8 clear_bits) +{ + return fusb302_i2c_mask_write(chip, address, clear_bits, 0x00); +} + +static int fusb302_sw_reset(struct fusb302_chip *chip) +{ + int ret = 0; + + ret = fusb302_i2c_write(chip, FUSB_REG_RESET, + FUSB_REG_RESET_SW_RESET); + if (ret < 0) + fusb302_log(chip, "cannot sw reset the chip, ret=%d", ret); + else + fusb302_log(chip, "sw reset"); + + return ret; +} + +static int fusb302_enable_tx_auto_retries(struct fusb302_chip *chip) +{ + int ret = 0; + + ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3, + FUSB_REG_CONTROL3_N_RETRIES_3 | + FUSB_REG_CONTROL3_AUTO_RETRY); + + return ret; +} + +/* + * initialize interrupt on the chip + * - unmasked interrupt: VBUS_OK + */ +static int fusb302_init_interrupt(struct fusb302_chip *chip) +{ + int ret = 0; + + ret = fusb302_i2c_write(chip, FUSB_REG_MASK, + 0xFF & ~FUSB_REG_MASK_VBUSOK); + if (ret < 0) + return ret; + ret = fusb302_i2c_write(chip, FUSB_REG_MASKA, 0xFF); + if (ret < 0) + return ret; + ret = fusb302_i2c_write(chip, FUSB_REG_MASKB, 0xFF); + if (ret < 0) + return ret; + ret = fusb302_i2c_clear_bits(chip, FUSB_REG_CONTROL0, + FUSB_REG_CONTROL0_INT_MASK); + if (ret < 0) + return ret; + + return ret; +} + +static int fusb302_set_power_mode(struct fusb302_chip *chip, u8 power_mode) +{ + int ret = 0; + + ret = fusb302_i2c_write(chip, FUSB_REG_POWER, power_mode); + + return ret; +} + +static int tcpm_init(struct tcpc_dev *dev) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + u8 data; + + ret = fusb302_sw_reset(chip); + if (ret < 0) + return ret; + ret = fusb302_enable_tx_auto_retries(chip); + if (ret < 0) + return ret; + ret = fusb302_init_interrupt(chip); + if (ret < 0) + return ret; + ret = fusb302_set_power_mode(chip, FUSB_REG_POWER_PWR_ALL); + if (ret < 0) + return ret; + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &data); + if (ret < 0) + return ret; + chip->vbus_present = !!(FUSB_REG_STATUS0 & FUSB_REG_STATUS0_VBUSOK); + ret = fusb302_i2c_read(chip, FUSB_REG_DEVICE_ID, &data); + if (ret < 0) + return ret; + fusb302_log(chip, "fusb302 device ID: 0x%02x", data); + + return ret; +} + +static int tcpm_get_vbus(struct tcpc_dev *dev) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + + mutex_lock(&chip->lock); + ret = chip->vbus_present ? 1 : 0; + mutex_unlock(&chip->lock); + + return ret; +} + +static int fusb302_set_cc_pull(struct fusb302_chip *chip, + bool pull_up, bool pull_down) +{ + int ret = 0; + u8 data = 0x00; + u8 mask = FUSB_REG_SWITCHES0_CC1_PU_EN | + FUSB_REG_SWITCHES0_CC2_PU_EN | + FUSB_REG_SWITCHES0_CC1_PD_EN | + FUSB_REG_SWITCHES0_CC2_PD_EN; + + if (pull_up) + data |= (chip->cc_polarity == TYPEC_POLARITY_CC1) ? + FUSB_REG_SWITCHES0_CC1_PU_EN : + FUSB_REG_SWITCHES0_CC2_PU_EN; + if (pull_down) + data |= FUSB_REG_SWITCHES0_CC1_PD_EN | + FUSB_REG_SWITCHES0_CC2_PD_EN; + ret = fusb302_i2c_mask_write(chip, FUSB_REG_SWITCHES0, + mask, data); + if (ret < 0) + return ret; + chip->pull_up = pull_up; + + return ret; +} + +static int fusb302_set_src_current(struct fusb302_chip *chip, + enum src_current_status status) +{ + int ret = 0; + + chip->src_current_status = status; + switch (status) { + case SRC_CURRENT_DEFAULT: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL0, + FUSB_REG_CONTROL0_HOST_CUR_MASK, + FUSB_REG_CONTROL0_HOST_CUR_DEF); + break; + case SRC_CURRENT_MEDIUM: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL0, + FUSB_REG_CONTROL0_HOST_CUR_MASK, + FUSB_REG_CONTROL0_HOST_CUR_MED); + break; + case SRC_CURRENT_HIGH: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL0, + FUSB_REG_CONTROL0_HOST_CUR_MASK, + FUSB_REG_CONTROL0_HOST_CUR_HIGH); + break; + default: + break; + } + + return ret; +} + +static int fusb302_set_toggling(struct fusb302_chip *chip, + enum toggling_mode mode) +{ + int ret = 0; + + /* first disable toggling */ + ret = fusb302_i2c_clear_bits(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_TOGGLE); + if (ret < 0) + return ret; + /* mask interrupts for SRC or SNK */ + ret = fusb302_i2c_set_bits(chip, FUSB_REG_MASK, + FUSB_REG_MASK_BC_LVL | + FUSB_REG_MASK_COMP_CHNG); + if (ret < 0) + return ret; + chip->intr_bc_lvl = false; + chip->intr_comp_chng = false; + /* configure toggling mode: none/snk/src/drp */ + switch (mode) { + case TOGGLINE_MODE_OFF: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_MODE_MASK, + FUSB_REG_CONTROL2_MODE_NONE); + if (ret < 0) + return ret; + break; + case TOGGLING_MODE_SNK: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_MODE_MASK, + FUSB_REG_CONTROL2_MODE_UFP); + if (ret < 0) + return ret; + break; + case TOGGLING_MODE_SRC: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_MODE_MASK, + FUSB_REG_CONTROL2_MODE_DFP); + if (ret < 0) + return ret; + break; + case TOGGLING_MODE_DRP: + ret = fusb302_i2c_mask_write(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_MODE_MASK, + FUSB_REG_CONTROL2_MODE_DRP); + if (ret < 0) + return ret; + break; + default: + break; + } + + if (mode == TOGGLINE_MODE_OFF) { + /* mask TOGDONE interrupt */ + ret = fusb302_i2c_set_bits(chip, FUSB_REG_MASKA, + FUSB_REG_MASKA_TOGDONE); + if (ret < 0) + return ret; + chip->intr_togdone = false; + } else { + /* unmask TOGDONE interrupt */ + ret = fusb302_i2c_clear_bits(chip, FUSB_REG_MASKA, + FUSB_REG_MASKA_TOGDONE); + if (ret < 0) + return ret; + chip->intr_togdone = true; + /* start toggling */ + ret = fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL2, + FUSB_REG_CONTROL2_TOGGLE); + if (ret < 0) + return ret; + /* during toggling, consider cc as Open */ + chip->cc1 = TYPEC_CC_OPEN; + chip->cc2 = TYPEC_CC_OPEN; + } + chip->toggling_mode = mode; + + return ret; +} + +static const char * const typec_cc_status_name[] = { + [TYPEC_CC_OPEN] = "Open", + [TYPEC_CC_RA] = "Ra", + [TYPEC_CC_RD] = "Rd", + [TYPEC_CC_RP_DEF] = "Rp-def", + [TYPEC_CC_RP_1_5] = "Rp-1.5", + [TYPEC_CC_RP_3_0] = "Rp-3.0", +}; + +static const enum src_current_status cc_src_current[] = { + [TYPEC_CC_OPEN] = SRC_CURRENT_DEFAULT, + [TYPEC_CC_RA] = SRC_CURRENT_DEFAULT, + [TYPEC_CC_RD] = SRC_CURRENT_DEFAULT, + [TYPEC_CC_RP_DEF] = SRC_CURRENT_DEFAULT, + [TYPEC_CC_RP_1_5] = SRC_CURRENT_MEDIUM, + [TYPEC_CC_RP_3_0] = SRC_CURRENT_HIGH, +}; + +static int tcpm_set_cc(struct tcpc_dev *dev, enum typec_cc_status cc) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + bool pull_up, pull_down; + u8 rd_mda; + + mutex_lock(&chip->lock); + switch (cc) { + case TYPEC_CC_OPEN: + pull_up = false; + pull_down = false; + break; + case TYPEC_CC_RD: + pull_up = false; + pull_down = true; + break; + case TYPEC_CC_RP_DEF: + case TYPEC_CC_RP_1_5: + case TYPEC_CC_RP_3_0: + pull_up = true; + pull_down = false; + break; + default: + fusb302_log(chip, "unsupported cc value %s", + typec_cc_status_name[cc]); + ret = -EINVAL; + goto done; + } + ret = fusb302_set_toggling(chip, TOGGLINE_MODE_OFF); + if (ret < 0) { + fusb302_log(chip, "cannot stop toggling, ret=%d", ret); + goto done; + } + ret = fusb302_set_cc_pull(chip, pull_up, pull_down); + if (ret < 0) { + fusb302_log(chip, + "cannot set cc pulling up %s, down %s, ret = %d", + pull_up ? "True" : "False", + pull_down ? "True" : "False", + ret); + goto done; + } + /* reset the cc status */ + chip->cc1 = TYPEC_CC_OPEN; + chip->cc2 = TYPEC_CC_OPEN; + /* adjust current for SRC */ + if (pull_up) { + ret = fusb302_set_src_current(chip, cc_src_current[cc]); + if (ret < 0) { + fusb302_log(chip, "cannot set src current %s, ret=%d", + typec_cc_status_name[cc], ret); + goto done; + } + } + /* enable/disable interrupts, BC_LVL for SNK and COMP_CHNG for SRC */ + if (pull_up) { + rd_mda = rd_mda_value[cc_src_current[cc]]; + ret = fusb302_i2c_write(chip, FUSB_REG_MEASURE, rd_mda); + if (ret < 0) { + fusb302_log(chip, + "cannot set SRC measure value, ret=%d", + ret); + goto done; + } + ret = fusb302_i2c_mask_write(chip, FUSB_REG_MASK, + FUSB_REG_MASK_BC_LVL | + FUSB_REG_MASK_COMP_CHNG, + FUSB_REG_MASK_COMP_CHNG); + if (ret < 0) { + fusb302_log(chip, "cannot set SRC interrupt, ret=%d", + ret); + goto done; + } + chip->intr_bc_lvl = false; + chip->intr_comp_chng = true; + } + if (pull_down) { + ret = fusb302_i2c_mask_write(chip, FUSB_REG_MASK, + FUSB_REG_MASK_BC_LVL | + FUSB_REG_MASK_COMP_CHNG, + FUSB_REG_MASK_BC_LVL); + if (ret < 0) { + fusb302_log(chip, "cannot set SRC interrupt, ret=%d", + ret); + goto done; + } + chip->intr_bc_lvl = true; + chip->intr_comp_chng = false; + } + fusb302_log(chip, "cc := %s", typec_cc_status_name[cc]); +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static int tcpm_get_cc(struct tcpc_dev *dev, enum typec_cc_status *cc1, + enum typec_cc_status *cc2) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + + mutex_lock(&chip->lock); + *cc1 = chip->cc1; + *cc2 = chip->cc2; + fusb302_log(chip, "cc1=%s, cc2=%s", typec_cc_status_name[*cc1], + typec_cc_status_name[*cc2]); + mutex_unlock(&chip->lock); + + return 0; +} + +static int tcpm_set_polarity(struct tcpc_dev *dev, + enum typec_cc_polarity polarity) +{ + return 0; +} + +static int tcpm_set_vconn(struct tcpc_dev *dev, bool on) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + u8 switches0_data = 0x00; + u8 switches0_mask = FUSB_REG_SWITCHES0_VCONN_CC1 | + FUSB_REG_SWITCHES0_VCONN_CC2; + + mutex_lock(&chip->lock); + if (chip->vconn_on == on) { + fusb302_log(chip, "vconn is already %s", on ? "On" : "Off"); + goto done; + } + if (on) { + switches0_data = (chip->cc_polarity == TYPEC_POLARITY_CC1) ? + FUSB_REG_SWITCHES0_VCONN_CC2 : + FUSB_REG_SWITCHES0_VCONN_CC1; + } + ret = fusb302_i2c_mask_write(chip, FUSB_REG_SWITCHES0, + switches0_mask, switches0_data); + if (ret < 0) + goto done; + chip->vconn_on = on; + fusb302_log(chip, "vconn := %s", on ? "On" : "Off"); +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static int tcpm_set_vbus(struct tcpc_dev *dev, bool on, bool charge) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + + mutex_lock(&chip->lock); + if (chip->vbus_on == on) { + fusb302_log(chip, "vbus is already %s", on ? "On" : "Off"); + } else { + if (on) + ret = regulator_enable(chip->vbus); + else + ret = regulator_disable(chip->vbus); + if (ret < 0) { + fusb302_log(chip, "cannot %s vbus regulator, ret=%d", + on ? "enable" : "disable", ret); + goto done; + } + chip->vbus_on = on; + fusb302_log(chip, "vbus := %s", on ? "On" : "Off"); + } + if (chip->charge_on == charge) + fusb302_log(chip, "charge is already %s", + charge ? "On" : "Off"); + else + chip->charge_on = charge; + +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static int tcpm_set_current_limit(struct tcpc_dev *dev, u32 max_ma, u32 mv) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + + fusb302_log(chip, "current limit: %d ma, %d mv (not implemented)", + max_ma, mv); + + return 0; +} + +static int fusb302_pd_tx_flush(struct fusb302_chip *chip) +{ + return fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL0, + FUSB_REG_CONTROL0_TX_FLUSH); +} + +static int fusb302_pd_rx_flush(struct fusb302_chip *chip) +{ + return fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL1, + FUSB_REG_CONTROL1_RX_FLUSH); +} + +static int fusb302_pd_set_auto_goodcrc(struct fusb302_chip *chip, bool on) +{ + if (on) + return fusb302_i2c_set_bits(chip, FUSB_REG_SWITCHES1, + FUSB_REG_SWITCHES1_AUTO_GCRC); + return fusb302_i2c_clear_bits(chip, FUSB_REG_SWITCHES1, + FUSB_REG_SWITCHES1_AUTO_GCRC); +} + +static int fusb302_pd_set_interrupts(struct fusb302_chip *chip, bool on) +{ + int ret = 0; + u8 mask_interrupts = FUSB_REG_MASK_COLLISION; + u8 maska_interrupts = FUSB_REG_MASKA_RETRYFAIL | + FUSB_REG_MASKA_HARDSENT | + FUSB_REG_MASKA_TX_SUCCESS | + FUSB_REG_MASKA_HARDRESET; + u8 maskb_interrupts = FUSB_REG_MASKB_GCRCSENT; + + ret = on ? + fusb302_i2c_clear_bits(chip, FUSB_REG_MASK, mask_interrupts) : + fusb302_i2c_set_bits(chip, FUSB_REG_MASK, mask_interrupts); + if (ret < 0) + return ret; + ret = on ? + fusb302_i2c_clear_bits(chip, FUSB_REG_MASKA, maska_interrupts) : + fusb302_i2c_set_bits(chip, FUSB_REG_MASKA, maska_interrupts); + if (ret < 0) + return ret; + ret = on ? + fusb302_i2c_clear_bits(chip, FUSB_REG_MASKB, maskb_interrupts) : + fusb302_i2c_set_bits(chip, FUSB_REG_MASKB, maskb_interrupts); + return ret; +} + +static int tcpm_set_pd_rx(struct tcpc_dev *dev, bool on) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + + mutex_lock(&chip->lock); + ret = fusb302_pd_rx_flush(chip); + if (ret < 0) { + fusb302_log(chip, "cannot flush pd rx buffer, ret=%d", ret); + goto done; + } + ret = fusb302_pd_tx_flush(chip); + if (ret < 0) { + fusb302_log(chip, "cannot flush pd tx buffer, ret=%d", ret); + goto done; + } + ret = fusb302_pd_set_auto_goodcrc(chip, on); + if (ret < 0) { + fusb302_log(chip, "cannot turn %s auto GCRC, ret=%d", + on ? "on" : "off", ret); + goto done; + } + ret = fusb302_pd_set_interrupts(chip, on); + if (ret < 0) { + fusb302_log(chip, "cannot turn %s pd interrupts, ret=%d", + on ? "on" : "off", ret); + goto done; + } + fusb302_log(chip, "pd := %s", on ? "on" : "off"); +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static const char * const typec_role_name[] = { + [TYPEC_SINK] = "Sink", + [TYPEC_SOURCE] = "Source", +}; + +static const char * const typec_data_role_name[] = { + [TYPEC_DEVICE] = "Device", + [TYPEC_HOST] = "Host", +}; + +static int tcpm_set_roles(struct tcpc_dev *dev, bool attached, + enum typec_role pwr, enum typec_data_role data) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + u8 switches1_mask = FUSB_REG_SWITCHES1_POWERROLE | + FUSB_REG_SWITCHES1_DATAROLE; + u8 switches1_data = 0x00; + + mutex_lock(&chip->lock); + if (pwr == TYPEC_SOURCE) + switches1_data |= FUSB_REG_SWITCHES1_POWERROLE; + if (data == TYPEC_HOST) + switches1_data |= FUSB_REG_SWITCHES1_DATAROLE; + ret = fusb302_i2c_mask_write(chip, FUSB_REG_SWITCHES1, + switches1_mask, switches1_data); + if (ret < 0) { + fusb302_log(chip, "unable to set pd header %s, %s, ret=%d", + typec_role_name[pwr], typec_data_role_name[data], + ret); + goto done; + } + fusb302_log(chip, "pd header := %s, %s", typec_role_name[pwr], + typec_data_role_name[data]); +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static int tcpm_start_drp_toggling(struct tcpc_dev *dev, + enum typec_cc_status cc) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + + mutex_lock(&chip->lock); + ret = fusb302_set_src_current(chip, cc_src_current[cc]); + if (ret < 0) { + fusb302_log(chip, "unable to set src current %s, ret=%d", + typec_cc_status_name[cc], ret); + goto done; + } + ret = fusb302_set_toggling(chip, TOGGLING_MODE_DRP); + if (ret < 0) { + fusb302_log(chip, + "unable to start drp toggling, ret=%d", ret); + goto done; + } + fusb302_log(chip, "start drp toggling"); +done: + mutex_unlock(&chip->lock); + + return ret; +} + +static int fusb302_pd_send_message(struct fusb302_chip *chip, + const struct pd_message *msg) +{ + int ret = 0; + u8 buf[40]; + u8 pos = 0; + int len; + + /* SOP tokens */ + buf[pos++] = FUSB302_TKN_SYNC1; + buf[pos++] = FUSB302_TKN_SYNC1; + buf[pos++] = FUSB302_TKN_SYNC1; + buf[pos++] = FUSB302_TKN_SYNC2; + + len = pd_header_cnt(msg->header) * 4; + /* plug 2 for header */ + len += 2; + if (len > 0x1F) { + fusb302_log(chip, + "PD message too long %d (incl. header)", len); + return -EINVAL; + } + /* packsym tells the FUSB302 chip that the next X bytes are payload */ + buf[pos++] = FUSB302_TKN_PACKSYM | (len & 0x1F); + buf[pos++] = msg->header & 0xFF; + buf[pos++] = (msg->header >> 8) & 0xFF; + + len -= 2; + memcpy(&buf[pos], msg->payload, len); + pos += len; + + /* CRC */ + buf[pos++] = FUSB302_TKN_JAMCRC; + /* EOP */ + buf[pos++] = FUSB302_TKN_EOP; + /* turn tx off after sending message */ + buf[pos++] = FUSB302_TKN_TXOFF; + /* start transmission */ + buf[pos++] = FUSB302_TKN_TXON; + + ret = fusb302_i2c_block_write(chip, FUSB_REG_FIFOS, pos, buf); + if (ret < 0) + return ret; + fusb302_log(chip, "sending PD message header: %x", msg->header); + fusb302_log(chip, "sending PD message len: %d", len); + + return ret; +} + +static int fusb302_pd_send_hardreset(struct fusb302_chip *chip) +{ + return fusb302_i2c_set_bits(chip, FUSB_REG_CONTROL3, + FUSB_REG_CONTROL3_SEND_HARDRESET); +} + +static const char * const transmit_type_name[] = { + [TCPC_TX_SOP] = "SOP", + [TCPC_TX_SOP_PRIME] = "SOP'", + [TCPC_TX_SOP_PRIME_PRIME] = "SOP''", + [TCPC_TX_SOP_DEBUG_PRIME] = "DEBUG'", + [TCPC_TX_SOP_DEBUG_PRIME_PRIME] = "DEBUG''", + [TCPC_TX_HARD_RESET] = "HARD_RESET", + [TCPC_TX_CABLE_RESET] = "CABLE_RESET", + [TCPC_TX_BIST_MODE_2] = "BIST_MODE_2", +}; + +static int tcpm_pd_transmit(struct tcpc_dev *dev, enum tcpm_transmit_type type, + const struct pd_message *msg) +{ + struct fusb302_chip *chip = container_of(dev, struct fusb302_chip, + tcpc_dev); + int ret = 0; + + mutex_lock(&chip->lock); + switch (type) { + case TCPC_TX_SOP: + ret = fusb302_pd_send_message(chip, msg); + if (ret < 0) + fusb302_log(chip, + "cannot send PD message, ret=%d", ret); + break; + case TCPC_TX_HARD_RESET: + ret = fusb302_pd_send_hardreset(chip); + if (ret < 0) + fusb302_log(chip, + "cannot send hardreset, ret=%d", ret); + break; + default: + fusb302_log(chip, "type %s not supported", + transmit_type_name[type]); + ret = -EINVAL; + } + mutex_unlock(&chip->lock); + + return ret; +} + +static enum typec_cc_status fusb302_bc_lvl_to_cc(u8 bc_lvl) +{ + if (bc_lvl == FUSB_REG_STATUS0_BC_LVL_1230_MAX) + return TYPEC_CC_RP_3_0; + if (bc_lvl == FUSB_REG_STATUS0_BC_LVL_600_1230) + return TYPEC_CC_RP_1_5; + if (bc_lvl == FUSB_REG_STATUS0_BC_LVL_200_600) + return TYPEC_CC_RP_DEF; + return TYPEC_CC_OPEN; +} + +static void fusb302_bc_lvl_handler_work(struct work_struct *work) +{ + struct fusb302_chip *chip = container_of(work, struct fusb302_chip, + bc_lvl_handler.work); + int ret = 0; + u8 status0; + u8 bc_lvl; + enum typec_cc_status cc_status; + + mutex_lock(&chip->lock); + if (!chip->intr_bc_lvl) { + fusb302_log(chip, "BC_LVL interrupt is turned off, abort"); + goto done; + } + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &status0); + if (ret < 0) + goto done; + fusb302_log(chip, "BC_LVL handler, status0=0x%02x", status0); + if (status0 & FUSB_REG_STATUS0_ACTIVITY) { + fusb302_log(chip, "CC activities detected, delay handling"); + mod_delayed_work(chip->wq, &chip->bc_lvl_handler, + msecs_to_jiffies(T_BC_LVL_DEBOUNCE_DELAY_MS)); + goto done; + } + bc_lvl = status0 & FUSB_REG_STATUS0_BC_LVL_MASK; + cc_status = fusb302_bc_lvl_to_cc(bc_lvl); + if (chip->cc_polarity == TYPEC_POLARITY_CC1) { + if (chip->cc1 != cc_status) { + fusb302_log(chip, "cc1: %s -> %s", + typec_cc_status_name[chip->cc1], + typec_cc_status_name[cc_status]); + chip->cc1 = cc_status; + tcpm_cc_change(chip->tcpm_port); + } + } else { + if (chip->cc2 != cc_status) { + fusb302_log(chip, "cc2: %s -> %s", + typec_cc_status_name[chip->cc2], + typec_cc_status_name[cc_status]); + chip->cc2 = cc_status; + tcpm_cc_change(chip->tcpm_port); + } + } + +done: + mutex_unlock(&chip->lock); +} + +#define PDO_FIXED_FLAGS \ + (PDO_FIXED_DUAL_ROLE | PDO_FIXED_DATA_SWAP | PDO_FIXED_USB_COMM) + +static const u32 src_pdo[] = { + PDO_FIXED(5000, 400, PDO_FIXED_FLAGS), +}; + +static const u32 snk_pdo[] = { + PDO_FIXED(5000, 400, PDO_FIXED_FLAGS), +}; + +static const struct tcpc_config fusb302_tcpc_config = { + .src_pdo = src_pdo, + .nr_src_pdo = ARRAY_SIZE(src_pdo), + .snk_pdo = snk_pdo, + .nr_snk_pdo = ARRAY_SIZE(snk_pdo), + .max_snk_mv = 9000, + .max_snk_ma = 3000, + .max_snk_mw = 27000, + .operating_snk_mw = 2500, + .type = TYPEC_PORT_DRP, + .default_role = TYPEC_SINK, + .alt_modes = NULL, +}; + +static void init_tcpc_dev(struct tcpc_dev *fusb302_tcpc_dev) +{ + fusb302_tcpc_dev->config = &fusb302_tcpc_config; + fusb302_tcpc_dev->init = tcpm_init; + fusb302_tcpc_dev->get_vbus = tcpm_get_vbus; + fusb302_tcpc_dev->set_cc = tcpm_set_cc; + fusb302_tcpc_dev->get_cc = tcpm_get_cc; + fusb302_tcpc_dev->set_polarity = tcpm_set_polarity; + fusb302_tcpc_dev->set_vconn = tcpm_set_vconn; + fusb302_tcpc_dev->set_vbus = tcpm_set_vbus; + fusb302_tcpc_dev->set_current_limit = tcpm_set_current_limit; + fusb302_tcpc_dev->set_pd_rx = tcpm_set_pd_rx; + fusb302_tcpc_dev->set_roles = tcpm_set_roles; + fusb302_tcpc_dev->start_drp_toggling = tcpm_start_drp_toggling; + fusb302_tcpc_dev->pd_transmit = tcpm_pd_transmit; + fusb302_tcpc_dev->mux = NULL; +} + +static const char * const cc_polarity_name[] = { + [TYPEC_POLARITY_CC1] = "Polarity_CC1", + [TYPEC_POLARITY_CC2] = "Polarity_CC2", +}; + +static int fusb302_set_cc_polarity(struct fusb302_chip *chip, + enum typec_cc_polarity cc_polarity) +{ + int ret = 0; + u8 switches0_mask = FUSB_REG_SWITCHES0_CC1_PU_EN | + FUSB_REG_SWITCHES0_CC2_PU_EN | + FUSB_REG_SWITCHES0_VCONN_CC1 | + FUSB_REG_SWITCHES0_VCONN_CC2 | + FUSB_REG_SWITCHES0_MEAS_CC1 | + FUSB_REG_SWITCHES0_MEAS_CC2; + u8 switches0_data = 0x00; + u8 switches1_mask = FUSB_REG_SWITCHES1_TXCC1_EN | + FUSB_REG_SWITCHES1_TXCC2_EN; + u8 switches1_data = 0x00; + + if (cc_polarity == TYPEC_POLARITY_CC1) { + switches0_data = FUSB_REG_SWITCHES0_MEAS_CC1; + if (chip->vconn_on) + switches0_data |= FUSB_REG_SWITCHES0_VCONN_CC2; + if (chip->pull_up) + switches0_data |= FUSB_REG_SWITCHES0_CC1_PU_EN; + switches1_data = FUSB_REG_SWITCHES1_TXCC1_EN; + } else { + switches0_data = FUSB_REG_SWITCHES0_MEAS_CC2; + if (chip->vconn_on) + switches0_data |= FUSB_REG_SWITCHES0_VCONN_CC1; + if (chip->pull_up) + switches0_data |= FUSB_REG_SWITCHES0_CC2_PU_EN; + switches1_data = FUSB_REG_SWITCHES1_TXCC2_EN; + } + ret = fusb302_i2c_mask_write(chip, FUSB_REG_SWITCHES0, + switches0_mask, switches0_data); + if (ret < 0) + return ret; + ret = fusb302_i2c_mask_write(chip, FUSB_REG_SWITCHES1, + switches1_mask, switches1_data); + if (ret < 0) + return ret; + chip->cc_polarity = cc_polarity; + + return ret; +} + +static int fusb302_handle_togdone_snk(struct fusb302_chip *chip, + u8 togdone_result) +{ + int ret = 0; + u8 status0; + u8 bc_lvl; + enum typec_cc_polarity cc_polarity; + enum typec_cc_status cc_status_active, cc1, cc2; + + /* set pull_up, pull_down */ + ret = fusb302_set_cc_pull(chip, false, true); + if (ret < 0) { + fusb302_log(chip, "cannot set cc to pull down, ret=%d", ret); + return ret; + } + /* set polarity */ + cc_polarity = (togdone_result == FUSB_REG_STATUS1A_TOGSS_SNK1) ? + TYPEC_POLARITY_CC1 : TYPEC_POLARITY_CC2; + ret = fusb302_set_cc_polarity(chip, cc_polarity); + if (ret < 0) { + fusb302_log(chip, "cannot set cc polarity %s, ret=%d", + cc_polarity_name[cc_polarity], ret); + return ret; + } + /* fusb302_set_cc_polarity() has set the correct measure block */ + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &status0); + if (ret < 0) + return ret; + bc_lvl = status0 & FUSB_REG_STATUS0_BC_LVL_MASK; + cc_status_active = fusb302_bc_lvl_to_cc(bc_lvl); + /* restart toggling if the cc status on the active line is OPEN */ + if (cc_status_active == TYPEC_CC_OPEN) { + fusb302_log(chip, "restart toggling as CC_OPEN detected"); + ret = fusb302_set_toggling(chip, chip->toggling_mode); + return ret; + } + /* update tcpm with the new cc value */ + cc1 = (cc_polarity == TYPEC_POLARITY_CC1) ? + cc_status_active : TYPEC_CC_OPEN; + cc2 = (cc_polarity == TYPEC_POLARITY_CC2) ? + cc_status_active : TYPEC_CC_OPEN; + if ((chip->cc1 != cc1) || (chip->cc2 != cc2)) { + chip->cc1 = cc1; + chip->cc2 = cc2; + tcpm_cc_change(chip->tcpm_port); + } + /* turn off toggling */ + ret = fusb302_set_toggling(chip, TOGGLINE_MODE_OFF); + if (ret < 0) { + fusb302_log(chip, + "cannot set toggling mode off, ret=%d", ret); + return ret; + } + /* unmask bc_lvl interrupt */ + ret = fusb302_i2c_clear_bits(chip, FUSB_REG_MASK, FUSB_REG_MASK_BC_LVL); + if (ret < 0) { + fusb302_log(chip, + "cannot unmask bc_lcl interrupt, ret=%d", ret); + return ret; + } + chip->intr_bc_lvl = true; + fusb302_log(chip, "detected cc1=%s, cc2=%s", + typec_cc_status_name[cc1], + typec_cc_status_name[cc2]); + + return ret; +} + +static int fusb302_handle_togdone_src(struct fusb302_chip *chip, + u8 togdone_result) +{ + /* + * - set polarity (measure cc, vconn, tx) + * - set pull_up, pull_down + * - set cc1, cc2, and update to tcpm_port + * - set I_COMP interrupt on + */ + int ret = 0; + u8 status0; + u8 ra_mda = ra_mda_value[chip->src_current_status]; + u8 rd_mda = rd_mda_value[chip->src_current_status]; + bool ra_comp, rd_comp; + enum typec_cc_polarity cc_polarity; + enum typec_cc_status cc_status_active, cc1, cc2; + + /* set pull_up, pull_down */ + ret = fusb302_set_cc_pull(chip, true, false); + if (ret < 0) { + fusb302_log(chip, "cannot set cc to pull up, ret=%d", ret); + return ret; + } + /* set polarity */ + cc_polarity = (togdone_result == FUSB_REG_STATUS1A_TOGSS_SRC1) ? + TYPEC_POLARITY_CC1 : TYPEC_POLARITY_CC2; + ret = fusb302_set_cc_polarity(chip, cc_polarity); + if (ret < 0) { + fusb302_log(chip, "cannot set cc polarity %s, ret=%d", + cc_polarity_name[cc_polarity], ret); + return ret; + } + /* fusb302_set_cc_polarity() has set the correct measure block */ + ret = fusb302_i2c_write(chip, FUSB_REG_MEASURE, rd_mda); + if (ret < 0) + return ret; + usleep_range(50, 100); + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &status0); + if (ret < 0) + return ret; + rd_comp = !!(status0 & FUSB_REG_STATUS0_COMP); + if (!rd_comp) { + ret = fusb302_i2c_write(chip, FUSB_REG_MEASURE, ra_mda); + if (ret < 0) + return ret; + usleep_range(50, 100); + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &status0); + if (ret < 0) + return ret; + ra_comp = !!(status0 & FUSB_REG_STATUS0_COMP); + } + if (rd_comp) + cc_status_active = TYPEC_CC_OPEN; + else if (ra_comp) + cc_status_active = TYPEC_CC_RD; + else + /* Ra is not supported, report as Open */ + cc_status_active = TYPEC_CC_OPEN; + /* restart toggling if the cc status on the active line is OPEN */ + if (cc_status_active == TYPEC_CC_OPEN) { + fusb302_log(chip, "restart toggling as CC_OPEN detected"); + ret = fusb302_set_toggling(chip, chip->toggling_mode); + return ret; + } + /* update tcpm with the new cc value */ + cc1 = (cc_polarity == TYPEC_POLARITY_CC1) ? + cc_status_active : TYPEC_CC_OPEN; + cc2 = (cc_polarity == TYPEC_POLARITY_CC2) ? + cc_status_active : TYPEC_CC_OPEN; + if ((chip->cc1 != cc1) || (chip->cc2 != cc2)) { + chip->cc1 = cc1; + chip->cc2 = cc2; + tcpm_cc_change(chip->tcpm_port); + } + /* turn off toggling */ + ret = fusb302_set_toggling(chip, TOGGLINE_MODE_OFF); + if (ret < 0) { + fusb302_log(chip, + "cannot set toggling mode off, ret=%d", ret); + return ret; + } + /* set MDAC to Rd threshold, and unmask I_COMP for unplug detection */ + ret = fusb302_i2c_write(chip, FUSB_REG_MEASURE, rd_mda); + if (ret < 0) + return ret; + /* unmask comp_chng interrupt */ + ret = fusb302_i2c_clear_bits(chip, FUSB_REG_MASK, + FUSB_REG_MASK_COMP_CHNG); + if (ret < 0) { + fusb302_log(chip, + "cannot unmask bc_lcl interrupt, ret=%d", ret); + return ret; + } + chip->intr_comp_chng = true; + fusb302_log(chip, "detected cc1=%s, cc2=%s", + typec_cc_status_name[cc1], + typec_cc_status_name[cc2]); + + return ret; +} + +static int fusb302_handle_togdone(struct fusb302_chip *chip) +{ + int ret = 0; + u8 status1a; + u8 togdone_result; + + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS1A, &status1a); + if (ret < 0) + return ret; + togdone_result = (status1a >> FUSB_REG_STATUS1A_TOGSS_POS) & + FUSB_REG_STATUS1A_TOGSS_MASK; + switch (togdone_result) { + case FUSB_REG_STATUS1A_TOGSS_SNK1: + case FUSB_REG_STATUS1A_TOGSS_SNK2: + return fusb302_handle_togdone_snk(chip, togdone_result); + case FUSB_REG_STATUS1A_TOGSS_SRC1: + case FUSB_REG_STATUS1A_TOGSS_SRC2: + return fusb302_handle_togdone_src(chip, togdone_result); + case FUSB_REG_STATUS1A_TOGSS_AA: + /* doesn't support */ + fusb302_log(chip, "AudioAccessory not supported"); + fusb302_set_toggling(chip, chip->toggling_mode); + break; + default: + fusb302_log(chip, "TOGDONE with an invalid state: %d", + togdone_result); + fusb302_set_toggling(chip, chip->toggling_mode); + break; + } + return ret; +} + +static int fusb302_pd_reset(struct fusb302_chip *chip) +{ + return fusb302_i2c_set_bits(chip, FUSB_REG_RESET, + FUSB_REG_RESET_PD_RESET); +} + +static int fusb302_pd_read_message(struct fusb302_chip *chip, + struct pd_message *msg) +{ + int ret = 0; + u8 token; + u8 crc[4]; + int len; + + /* first SOP token */ + ret = fusb302_i2c_read(chip, FUSB_REG_FIFOS, &token); + if (ret < 0) + return ret; + ret = fusb302_i2c_block_read(chip, FUSB_REG_FIFOS, 2, + (u8 *)&msg->header); + if (ret < 0) + return ret; + len = pd_header_cnt(msg->header) * 4; + /* add 4 to length to include the CRC */ + if (len > PD_MAX_PAYLOAD * 4) { + fusb302_log(chip, "PD message too long %d", len); + return -EINVAL; + } + if (len > 0) { + ret = fusb302_i2c_block_read(chip, FUSB_REG_FIFOS, len, + (u8 *)msg->payload); + if (ret < 0) + return ret; + } + /* another 4 bytes to read CRC out */ + ret = fusb302_i2c_block_read(chip, FUSB_REG_FIFOS, 4, crc); + if (ret < 0) + return ret; + fusb302_log(chip, "PD message header: %x", msg->header); + fusb302_log(chip, "PD message len: %d", len); + + return ret; +} + +static irqreturn_t fusb302_irq_intn(int irq, void *dev_id) +{ + struct fusb302_chip *chip = dev_id; + int ret = 0; + u8 interrupt; + u8 interrupta; + u8 interruptb; + u8 status0; + bool vbus_present; + bool comp_result; + bool intr_togdone; + bool intr_bc_lvl; + bool intr_comp_chng; + struct pd_message pd_msg; + + mutex_lock(&chip->lock); + /* grab a snapshot of intr flags */ + intr_togdone = chip->intr_togdone; + intr_bc_lvl = chip->intr_bc_lvl; + intr_comp_chng = chip->intr_comp_chng; + + ret = fusb302_i2c_read(chip, FUSB_REG_INTERRUPT, &interrupt); + if (ret < 0) + goto done; + ret = fusb302_i2c_read(chip, FUSB_REG_INTERRUPTA, &interrupta); + if (ret < 0) + goto done; + ret = fusb302_i2c_read(chip, FUSB_REG_INTERRUPTB, &interruptb); + if (ret < 0) + goto done; + ret = fusb302_i2c_read(chip, FUSB_REG_STATUS0, &status0); + if (ret < 0) + goto done; + fusb302_log(chip, + "IRQ: 0x%02x, a: 0x%02x, b: 0x%02x, status0: 0x%02x", + interrupt, interrupta, interruptb, status0); + + if (interrupt & FUSB_REG_INTERRUPT_VBUSOK) { + vbus_present = !!(status0 & FUSB_REG_STATUS0_VBUSOK); + fusb302_log(chip, "IRQ: VBUS_OK, vbus=%s", + vbus_present ? "On" : "Off"); + if (vbus_present != chip->vbus_present) { + chip->vbus_present = vbus_present; + tcpm_vbus_change(chip->tcpm_port); + } + } + + if ((interrupta & FUSB_REG_INTERRUPTA_TOGDONE) && intr_togdone) { + fusb302_log(chip, "IRQ: TOGDONE"); + ret = fusb302_handle_togdone(chip); + if (ret < 0) { + fusb302_log(chip, + "handle togdone error, ret=%d", ret); + goto done; + } + } + + if ((interrupt & FUSB_REG_INTERRUPT_BC_LVL) && intr_bc_lvl) { + fusb302_log(chip, "IRQ: BC_LVL, handler pending"); + /* + * as BC_LVL interrupt can be affected by PD activity, + * apply delay to for the handler to wait for the PD + * signaling to finish. + */ + mod_delayed_work(chip->wq, &chip->bc_lvl_handler, + msecs_to_jiffies(T_BC_LVL_DEBOUNCE_DELAY_MS)); + } + + if ((interrupt & FUSB_REG_INTERRUPT_COMP_CHNG) && intr_comp_chng) { + comp_result = !!(status0 & FUSB_REG_STATUS0_COMP); + fusb302_log(chip, "IRQ: COMP_CHNG, comp=%s", + comp_result ? "true" : "false"); + if (comp_result) { + /* cc level > Rd_threashold, detach */ + if (chip->cc_polarity == TYPEC_POLARITY_CC1) + chip->cc1 = TYPEC_CC_OPEN; + else + chip->cc2 = TYPEC_CC_OPEN; + tcpm_cc_change(chip->tcpm_port); + } + } + + if (interrupt & FUSB_REG_INTERRUPT_COLLISION) { + fusb302_log(chip, "IRQ: PD collision"); + tcpm_pd_transmit_complete(chip->tcpm_port, TCPC_TX_FAILED); + } + + if (interrupta & FUSB_REG_INTERRUPTA_RETRYFAIL) { + fusb302_log(chip, "IRQ: PD retry failed"); + tcpm_pd_transmit_complete(chip->tcpm_port, TCPC_TX_FAILED); + } + + if (interrupta & FUSB_REG_INTERRUPTA_HARDSENT) { + fusb302_log(chip, "IRQ: PD hardreset sent"); + ret = fusb302_pd_reset(chip); + if (ret < 0) { + fusb302_log(chip, "cannot PD reset, ret=%d", ret); + goto done; + } + tcpm_pd_transmit_complete(chip->tcpm_port, TCPC_TX_SUCCESS); + } + + if (interrupta & FUSB_REG_INTERRUPTA_TX_SUCCESS) { + fusb302_log(chip, "IRQ: PD tx success"); + /* read out the received good CRC */ + ret = fusb302_pd_read_message(chip, &pd_msg); + if (ret < 0) { + fusb302_log(chip, "cannot read in GCRC, ret=%d", ret); + goto done; + } + tcpm_pd_transmit_complete(chip->tcpm_port, TCPC_TX_SUCCESS); + } + + if (interrupta & FUSB_REG_INTERRUPTA_HARDRESET) { + fusb302_log(chip, "IRQ: PD received hardreset"); + ret = fusb302_pd_reset(chip); + if (ret < 0) { + fusb302_log(chip, "cannot PD reset, ret=%d", ret); + goto done; + } + tcpm_pd_hard_reset(chip->tcpm_port); + } + + if (interruptb & FUSB_REG_INTERRUPTB_GCRCSENT) { + fusb302_log(chip, "IRQ: PD sent good CRC"); + ret = fusb302_pd_read_message(chip, &pd_msg); + if (ret < 0) { + fusb302_log(chip, + "cannot read in PD message, ret=%d", ret); + goto done; + } + tcpm_pd_receive(chip->tcpm_port, &pd_msg); + } +done: + mutex_unlock(&chip->lock); + + return IRQ_HANDLED; +} + +static int init_gpio(struct fusb302_chip *chip) +{ + struct device_node *node; + int ret = 0; + + node = chip->dev->of_node; + chip->gpio_int_n = of_get_named_gpio(node, "fcs,int_n", 0); + if (!gpio_is_valid(chip->gpio_int_n)) { + ret = chip->gpio_int_n; + fusb302_log(chip, "cannot get named GPIO Int_N, ret=%d", ret); + return ret; + } + ret = devm_gpio_request(chip->dev, chip->gpio_int_n, "fcs,int_n"); + if (ret < 0) { + fusb302_log(chip, "cannot request GPIO Int_N, ret=%d", ret); + return ret; + } + ret = gpio_direction_input(chip->gpio_int_n); + if (ret < 0) { + fusb302_log(chip, + "cannot set GPIO Int_N to input, ret=%d", ret); + gpio_free(chip->gpio_int_n); + return ret; + } + ret = gpio_to_irq(chip->gpio_int_n); + if (ret < 0) { + fusb302_log(chip, + "cannot request IRQ for GPIO Int_N, ret=%d", ret); + gpio_free(chip->gpio_int_n); + return ret; + } + chip->gpio_int_n_irq = ret; + return 0; +} + +static int fusb302_probe(struct i2c_client *client, + const struct i2c_device_id *id) +{ + struct fusb302_chip *chip; + struct i2c_adapter *adapter; + int ret = 0; + + adapter = to_i2c_adapter(client->dev.parent); + if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_I2C_BLOCK)) { + dev_err(&client->dev, + "I2C/SMBus block functionality not supported!\n"); + return -ENODEV; + } + chip = devm_kzalloc(&client->dev, sizeof(*chip), GFP_KERNEL); + if (!chip) + return -ENOMEM; + + chip->i2c_client = client; + i2c_set_clientdata(client, chip); + chip->dev = &client->dev; + mutex_init(&chip->lock); + + ret = fusb302_debugfs_init(chip); + if (ret < 0) + return ret; + + chip->wq = create_singlethread_workqueue(dev_name(chip->dev)); + if (!chip->wq) { + ret = -ENOMEM; + goto clear_client_data; + } + INIT_DELAYED_WORK(&chip->bc_lvl_handler, fusb302_bc_lvl_handler_work); + init_tcpc_dev(&chip->tcpc_dev); + + chip->vbus = devm_regulator_get(chip->dev, "vbus"); + if (IS_ERR(chip->vbus)) { + ret = PTR_ERR(chip->vbus); + goto destroy_workqueue; + } + + ret = init_gpio(chip); + if (ret < 0) + goto destroy_workqueue; + + chip->tcpm_port = tcpm_register_port(&client->dev, &chip->tcpc_dev); + if (IS_ERR(chip->tcpm_port)) { + ret = PTR_ERR(chip->tcpm_port); + fusb302_log(chip, "cannot register tcpm port, ret=%d", ret); + goto destroy_workqueue; + } + + ret = devm_request_threaded_irq(chip->dev, chip->gpio_int_n_irq, + NULL, fusb302_irq_intn, + IRQF_ONESHOT | IRQF_TRIGGER_LOW, + "fsc_interrupt_int_n", chip); + if (ret < 0) { + fusb302_log(chip, + "cannot request IRQ for GPIO Int_N, ret=%d", ret); + goto tcpm_unregister_port; + } + enable_irq_wake(chip->gpio_int_n_irq); + return ret; + +tcpm_unregister_port: + tcpm_unregister_port(chip->tcpm_port); +destroy_workqueue: + destroy_workqueue(chip->wq); +clear_client_data: + i2c_set_clientdata(client, NULL); + fusb302_debugfs_exit(chip); + + return ret; +} + +static int fusb302_remove(struct i2c_client *client) +{ + struct fusb302_chip *chip = i2c_get_clientdata(client); + + tcpm_unregister_port(chip->tcpm_port); + destroy_workqueue(chip->wq); + i2c_set_clientdata(client, NULL); + fusb302_debugfs_exit(chip); + + return 0; +} + +static int fusb302_pm_suspend(struct device *dev) +{ + struct fusb302_chip *chip = dev->driver_data; + + if (atomic_read(&chip->i2c_busy)) + return -EBUSY; + atomic_set(&chip->pm_suspend, 1); + + return 0; +} + +static int fusb302_pm_resume(struct device *dev) +{ + struct fusb302_chip *chip = dev->driver_data; + + atomic_set(&chip->pm_suspend, 0); + + return 0; +} + +static const struct of_device_id fusb302_dt_match[] = { + {.compatible = "fcs,fusb302"}, + {}, +}; + +static const struct i2c_device_id fusb302_i2c_device_id[] = { + {"typec_fusb302", 0}, + {}, +}; + +static const struct dev_pm_ops fusb302_pm_ops = { + .suspend = fusb302_pm_suspend, + .resume = fusb302_pm_resume, +}; + +static struct i2c_driver fusb302_driver = { + .driver = { + .name = "typec_fusb302", + .pm = &fusb302_pm_ops, + .of_match_table = of_match_ptr(fusb302_dt_match), + }, + .probe = fusb302_probe, + .remove = fusb302_remove, + .id_table = fusb302_i2c_device_id, +}; +module_i2c_driver(fusb302_driver); + +MODULE_AUTHOR("Yueyao Zhu <yueyao.zhu@gmail.com>"); +MODULE_DESCRIPTION("Fairchild FUSB302 Type-C Chip Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/typec/fusb302/fusb302_reg.h b/drivers/staging/typec/fusb302/fusb302_reg.h new file mode 100644 index 000000000000..0682e63de773 --- /dev/null +++ b/drivers/staging/typec/fusb302/fusb302_reg.h @@ -0,0 +1,186 @@ +/* + * Copyright 2016-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * Fairchild FUSB302 Type-C Chip Driver + */ + +#ifndef FUSB302_REG_H +#define FUSB302_REG_H + +#define FUSB_REG_DEVICE_ID 0x01 +#define FUSB_REG_SWITCHES0 0x02 +#define FUSB_REG_SWITCHES0_CC2_PU_EN BIT(7) +#define FUSB_REG_SWITCHES0_CC1_PU_EN BIT(6) +#define FUSB_REG_SWITCHES0_VCONN_CC2 BIT(5) +#define FUSB_REG_SWITCHES0_VCONN_CC1 BIT(4) +#define FUSB_REG_SWITCHES0_MEAS_CC2 BIT(3) +#define FUSB_REG_SWITCHES0_MEAS_CC1 BIT(2) +#define FUSB_REG_SWITCHES0_CC2_PD_EN BIT(1) +#define FUSB_REG_SWITCHES0_CC1_PD_EN BIT(0) +#define FUSB_REG_SWITCHES1 0x03 +#define FUSB_REG_SWITCHES1_POWERROLE BIT(7) +#define FUSB_REG_SWITCHES1_SPECREV1 BIT(6) +#define FUSB_REG_SWITCHES1_SPECREV0 BIT(5) +#define FUSB_REG_SWITCHES1_DATAROLE BIT(4) +#define FUSB_REG_SWITCHES1_AUTO_GCRC BIT(2) +#define FUSB_REG_SWITCHES1_TXCC2_EN BIT(1) +#define FUSB_REG_SWITCHES1_TXCC1_EN BIT(0) +#define FUSB_REG_MEASURE 0x04 +#define FUSB_REG_MEASURE_MDAC5 BIT(7) +#define FUSB_REG_MEASURE_MDAC4 BIT(6) +#define FUSB_REG_MEASURE_MDAC3 BIT(5) +#define FUSB_REG_MEASURE_MDAC2 BIT(4) +#define FUSB_REG_MEASURE_MDAC1 BIT(3) +#define FUSB_REG_MEASURE_MDAC0 BIT(2) +#define FUSB_REG_MEASURE_VBUS BIT(1) +#define FUSB_REG_MEASURE_XXXX5 BIT(0) +#define FUSB_REG_CONTROL0 0x06 +#define FUSB_REG_CONTROL0_TX_FLUSH BIT(6) +#define FUSB_REG_CONTROL0_INT_MASK BIT(5) +#define FUSB_REG_CONTROL0_HOST_CUR_MASK (0xC) +#define FUSB_REG_CONTROL0_HOST_CUR_HIGH (0xC) +#define FUSB_REG_CONTROL0_HOST_CUR_MED (0x8) +#define FUSB_REG_CONTROL0_HOST_CUR_DEF (0x4) +#define FUSB_REG_CONTROL0_TX_START BIT(0) +#define FUSB_REG_CONTROL1 0x07 +#define FUSB_REG_CONTROL1_ENSOP2DB BIT(6) +#define FUSB_REG_CONTROL1_ENSOP1DB BIT(5) +#define FUSB_REG_CONTROL1_BIST_MODE2 BIT(4) +#define FUSB_REG_CONTROL1_RX_FLUSH BIT(2) +#define FUSB_REG_CONTROL1_ENSOP2 BIT(1) +#define FUSB_REG_CONTROL1_ENSOP1 BIT(0) +#define FUSB_REG_CONTROL2 0x08 +#define FUSB_REG_CONTROL2_MODE BIT(1) +#define FUSB_REG_CONTROL2_MODE_MASK (0x6) +#define FUSB_REG_CONTROL2_MODE_DFP (0x6) +#define FUSB_REG_CONTROL2_MODE_UFP (0x4) +#define FUSB_REG_CONTROL2_MODE_DRP (0x2) +#define FUSB_REG_CONTROL2_MODE_NONE (0x0) +#define FUSB_REG_CONTROL2_TOGGLE BIT(0) +#define FUSB_REG_CONTROL3 0x09 +#define FUSB_REG_CONTROL3_SEND_HARDRESET BIT(6) +#define FUSB_REG_CONTROL3_BIST_TMODE BIT(5) /* 302B Only */ +#define FUSB_REG_CONTROL3_AUTO_HARDRESET BIT(4) +#define FUSB_REG_CONTROL3_AUTO_SOFTRESET BIT(3) +#define FUSB_REG_CONTROL3_N_RETRIES BIT(1) +#define FUSB_REG_CONTROL3_N_RETRIES_MASK (0x6) +#define FUSB_REG_CONTROL3_N_RETRIES_3 (0x6) +#define FUSB_REG_CONTROL3_N_RETRIES_2 (0x4) +#define FUSB_REG_CONTROL3_N_RETRIES_1 (0x2) +#define FUSB_REG_CONTROL3_AUTO_RETRY BIT(0) +#define FUSB_REG_MASK 0x0A +#define FUSB_REG_MASK_VBUSOK BIT(7) +#define FUSB_REG_MASK_ACTIVITY BIT(6) +#define FUSB_REG_MASK_COMP_CHNG BIT(5) +#define FUSB_REG_MASK_CRC_CHK BIT(4) +#define FUSB_REG_MASK_ALERT BIT(3) +#define FUSB_REG_MASK_WAKE BIT(2) +#define FUSB_REG_MASK_COLLISION BIT(1) +#define FUSB_REG_MASK_BC_LVL BIT(0) +#define FUSB_REG_POWER 0x0B +#define FUSB_REG_POWER_PWR BIT(0) +#define FUSB_REG_POWER_PWR_LOW 0x1 +#define FUSB_REG_POWER_PWR_MEDIUM 0x3 +#define FUSB_REG_POWER_PWR_HIGH 0x7 +#define FUSB_REG_POWER_PWR_ALL 0xF +#define FUSB_REG_RESET 0x0C +#define FUSB_REG_RESET_PD_RESET BIT(1) +#define FUSB_REG_RESET_SW_RESET BIT(0) +#define FUSB_REG_MASKA 0x0E +#define FUSB_REG_MASKA_OCP_TEMP BIT(7) +#define FUSB_REG_MASKA_TOGDONE BIT(6) +#define FUSB_REG_MASKA_SOFTFAIL BIT(5) +#define FUSB_REG_MASKA_RETRYFAIL BIT(4) +#define FUSB_REG_MASKA_HARDSENT BIT(3) +#define FUSB_REG_MASKA_TX_SUCCESS BIT(2) +#define FUSB_REG_MASKA_SOFTRESET BIT(1) +#define FUSB_REG_MASKA_HARDRESET BIT(0) +#define FUSB_REG_MASKB 0x0F +#define FUSB_REG_MASKB_GCRCSENT BIT(0) +#define FUSB_REG_STATUS0A 0x3C +#define FUSB_REG_STATUS0A_SOFTFAIL BIT(5) +#define FUSB_REG_STATUS0A_RETRYFAIL BIT(4) +#define FUSB_REG_STATUS0A_POWER BIT(2) +#define FUSB_REG_STATUS0A_RX_SOFT_RESET BIT(1) +#define FUSB_REG_STATUS0A_RX_HARD_RESET BIT(0) +#define FUSB_REG_STATUS1A 0x3D +#define FUSB_REG_STATUS1A_TOGSS BIT(3) +#define FUSB_REG_STATUS1A_TOGSS_RUNNING 0x0 +#define FUSB_REG_STATUS1A_TOGSS_SRC1 0x1 +#define FUSB_REG_STATUS1A_TOGSS_SRC2 0x2 +#define FUSB_REG_STATUS1A_TOGSS_SNK1 0x5 +#define FUSB_REG_STATUS1A_TOGSS_SNK2 0x6 +#define FUSB_REG_STATUS1A_TOGSS_AA 0x7 +#define FUSB_REG_STATUS1A_TOGSS_POS (3) +#define FUSB_REG_STATUS1A_TOGSS_MASK (0x7) +#define FUSB_REG_STATUS1A_RXSOP2DB BIT(2) +#define FUSB_REG_STATUS1A_RXSOP1DB BIT(1) +#define FUSB_REG_STATUS1A_RXSOP BIT(0) +#define FUSB_REG_INTERRUPTA 0x3E +#define FUSB_REG_INTERRUPTA_OCP_TEMP BIT(7) +#define FUSB_REG_INTERRUPTA_TOGDONE BIT(6) +#define FUSB_REG_INTERRUPTA_SOFTFAIL BIT(5) +#define FUSB_REG_INTERRUPTA_RETRYFAIL BIT(4) +#define FUSB_REG_INTERRUPTA_HARDSENT BIT(3) +#define FUSB_REG_INTERRUPTA_TX_SUCCESS BIT(2) +#define FUSB_REG_INTERRUPTA_SOFTRESET BIT(1) +#define FUSB_REG_INTERRUPTA_HARDRESET BIT(0) +#define FUSB_REG_INTERRUPTB 0x3F +#define FUSB_REG_INTERRUPTB_GCRCSENT BIT(0) +#define FUSB_REG_STATUS0 0x40 +#define FUSB_REG_STATUS0_VBUSOK BIT(7) +#define FUSB_REG_STATUS0_ACTIVITY BIT(6) +#define FUSB_REG_STATUS0_COMP BIT(5) +#define FUSB_REG_STATUS0_CRC_CHK BIT(4) +#define FUSB_REG_STATUS0_ALERT BIT(3) +#define FUSB_REG_STATUS0_WAKE BIT(2) +#define FUSB_REG_STATUS0_BC_LVL_MASK 0x03 +#define FUSB_REG_STATUS0_BC_LVL_0_200 0x0 +#define FUSB_REG_STATUS0_BC_LVL_200_600 0x1 +#define FUSB_REG_STATUS0_BC_LVL_600_1230 0x2 +#define FUSB_REG_STATUS0_BC_LVL_1230_MAX 0x3 +#define FUSB_REG_STATUS0_BC_LVL1 BIT(1) +#define FUSB_REG_STATUS0_BC_LVL0 BIT(0) +#define FUSB_REG_STATUS1 0x41 +#define FUSB_REG_STATUS1_RXSOP2 BIT(7) +#define FUSB_REG_STATUS1_RXSOP1 BIT(6) +#define FUSB_REG_STATUS1_RX_EMPTY BIT(5) +#define FUSB_REG_STATUS1_RX_FULL BIT(4) +#define FUSB_REG_STATUS1_TX_EMPTY BIT(3) +#define FUSB_REG_STATUS1_TX_FULL BIT(2) +#define FUSB_REG_INTERRUPT 0x42 +#define FUSB_REG_INTERRUPT_VBUSOK BIT(7) +#define FUSB_REG_INTERRUPT_ACTIVITY BIT(6) +#define FUSB_REG_INTERRUPT_COMP_CHNG BIT(5) +#define FUSB_REG_INTERRUPT_CRC_CHK BIT(4) +#define FUSB_REG_INTERRUPT_ALERT BIT(3) +#define FUSB_REG_INTERRUPT_WAKE BIT(2) +#define FUSB_REG_INTERRUPT_COLLISION BIT(1) +#define FUSB_REG_INTERRUPT_BC_LVL BIT(0) +#define FUSB_REG_FIFOS 0x43 + +/* Tokens defined for the FUSB302 TX FIFO */ +enum fusb302_txfifo_tokens { + FUSB302_TKN_TXON = 0xA1, + FUSB302_TKN_SYNC1 = 0x12, + FUSB302_TKN_SYNC2 = 0x13, + FUSB302_TKN_SYNC3 = 0x1B, + FUSB302_TKN_RST1 = 0x15, + FUSB302_TKN_RST2 = 0x16, + FUSB302_TKN_PACKSYM = 0x80, + FUSB302_TKN_JAMCRC = 0xFF, + FUSB302_TKN_EOP = 0x14, + FUSB302_TKN_TXOFF = 0xFE, +}; + +#endif diff --git a/drivers/staging/typec/pd.h b/drivers/staging/typec/pd.h new file mode 100644 index 000000000000..8d97bdb95f23 --- /dev/null +++ b/drivers/staging/typec/pd.h @@ -0,0 +1,281 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_USB_PD_H +#define __LINUX_USB_PD_H + +#include <linux/types.h> +#include <linux/usb/typec.h> + +/* USB PD Messages */ +enum pd_ctrl_msg_type { + /* 0 Reserved */ + PD_CTRL_GOOD_CRC = 1, + PD_CTRL_GOTO_MIN = 2, + PD_CTRL_ACCEPT = 3, + PD_CTRL_REJECT = 4, + PD_CTRL_PING = 5, + PD_CTRL_PS_RDY = 6, + PD_CTRL_GET_SOURCE_CAP = 7, + PD_CTRL_GET_SINK_CAP = 8, + PD_CTRL_DR_SWAP = 9, + PD_CTRL_PR_SWAP = 10, + PD_CTRL_VCONN_SWAP = 11, + PD_CTRL_WAIT = 12, + PD_CTRL_SOFT_RESET = 13, + /* 14-15 Reserved */ +}; + +enum pd_data_msg_type { + /* 0 Reserved */ + PD_DATA_SOURCE_CAP = 1, + PD_DATA_REQUEST = 2, + PD_DATA_BIST = 3, + PD_DATA_SINK_CAP = 4, + /* 5-14 Reserved */ + PD_DATA_VENDOR_DEF = 15, +}; + +#define PD_REV10 0x0 +#define PD_REV20 0x1 + +#define PD_HEADER_CNT_SHIFT 12 +#define PD_HEADER_CNT_MASK 0x7 +#define PD_HEADER_ID_SHIFT 9 +#define PD_HEADER_ID_MASK 0x7 +#define PD_HEADER_PWR_ROLE BIT(8) +#define PD_HEADER_REV_SHIFT 6 +#define PD_HEADER_REV_MASK 0x3 +#define PD_HEADER_DATA_ROLE BIT(5) +#define PD_HEADER_TYPE_SHIFT 0 +#define PD_HEADER_TYPE_MASK 0xf + +#define PD_HEADER(type, pwr, data, id, cnt) \ + ((((type) & PD_HEADER_TYPE_MASK) << PD_HEADER_TYPE_SHIFT) | \ + ((pwr) == TYPEC_SOURCE ? PD_HEADER_PWR_ROLE : 0) | \ + ((data) == TYPEC_HOST ? PD_HEADER_DATA_ROLE : 0) | \ + (PD_REV20 << PD_HEADER_REV_SHIFT) | \ + (((id) & PD_HEADER_ID_MASK) << PD_HEADER_ID_SHIFT) | \ + (((cnt) & PD_HEADER_CNT_MASK) << PD_HEADER_CNT_SHIFT)) + +#define PD_HEADER_LE(type, pwr, data, id, cnt) \ + cpu_to_le16(PD_HEADER((type), (pwr), (data), (id), (cnt))) + +static inline unsigned int pd_header_cnt(u16 header) +{ + return (header >> PD_HEADER_CNT_SHIFT) & PD_HEADER_CNT_MASK; +} + +static inline unsigned int pd_header_cnt_le(__le16 header) +{ + return pd_header_cnt(le16_to_cpu(header)); +} + +static inline unsigned int pd_header_type(u16 header) +{ + return (header >> PD_HEADER_TYPE_SHIFT) & PD_HEADER_TYPE_MASK; +} + +static inline unsigned int pd_header_type_le(__le16 header) +{ + return pd_header_type(le16_to_cpu(header)); +} + +#define PD_MAX_PAYLOAD 7 + +struct pd_message { + __le16 header; + __le32 payload[PD_MAX_PAYLOAD]; +} __packed; + +/* PDO: Power Data Object */ +#define PDO_MAX_OBJECTS 7 + +enum pd_pdo_type { + PDO_TYPE_FIXED = 0, + PDO_TYPE_BATT = 1, + PDO_TYPE_VAR = 2, +}; + +#define PDO_TYPE_SHIFT 30 +#define PDO_TYPE_MASK 0x3 + +#define PDO_TYPE(t) ((t) << PDO_TYPE_SHIFT) + +#define PDO_VOLT_MASK 0x3ff +#define PDO_CURR_MASK 0x3ff +#define PDO_PWR_MASK 0x3ff + +#define PDO_FIXED_DUAL_ROLE BIT(29) /* Power role swap supported */ +#define PDO_FIXED_SUSPEND BIT(28) /* USB Suspend supported (Source) */ +#define PDO_FIXED_HIGHER_CAP BIT(28) /* Requires more than vSafe5V (Sink) */ +#define PDO_FIXED_EXTPOWER BIT(27) /* Externally powered */ +#define PDO_FIXED_USB_COMM BIT(26) /* USB communications capable */ +#define PDO_FIXED_DATA_SWAP BIT(25) /* Data role swap supported */ +#define PDO_FIXED_VOLT_SHIFT 10 /* 50mV units */ +#define PDO_FIXED_CURR_SHIFT 0 /* 10mA units */ + +#define PDO_FIXED_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_FIXED_VOLT_SHIFT) +#define PDO_FIXED_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_FIXED_CURR_SHIFT) + +#define PDO_FIXED(mv, ma, flags) \ + (PDO_TYPE(PDO_TYPE_FIXED) | (flags) | \ + PDO_FIXED_VOLT(mv) | PDO_FIXED_CURR(ma)) + +#define PDO_BATT_MAX_VOLT_SHIFT 20 /* 50mV units */ +#define PDO_BATT_MIN_VOLT_SHIFT 10 /* 50mV units */ +#define PDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */ + +#define PDO_BATT_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MIN_VOLT_SHIFT) +#define PDO_BATT_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_BATT_MAX_VOLT_SHIFT) +#define PDO_BATT_MAX_POWER(mw) ((((mw) / 250) & PDO_PWR_MASK) << PDO_BATT_MAX_PWR_SHIFT) + +#define PDO_BATT(min_mv, max_mv, max_mw) \ + (PDO_TYPE(PDO_TYPE_BATT) | PDO_BATT_MIN_VOLT(min_mv) | \ + PDO_BATT_MAX_VOLT(max_mv) | PDO_BATT_MAX_POWER(max_mw)) + +#define PDO_VAR_MAX_VOLT_SHIFT 20 /* 50mV units */ +#define PDO_VAR_MIN_VOLT_SHIFT 10 /* 50mV units */ +#define PDO_VAR_MAX_CURR_SHIFT 0 /* 10mA units */ + +#define PDO_VAR_MIN_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MIN_VOLT_SHIFT) +#define PDO_VAR_MAX_VOLT(mv) ((((mv) / 50) & PDO_VOLT_MASK) << PDO_VAR_MAX_VOLT_SHIFT) +#define PDO_VAR_MAX_CURR(ma) ((((ma) / 10) & PDO_CURR_MASK) << PDO_VAR_MAX_CURR_SHIFT) + +#define PDO_VAR(min_mv, max_mv, max_ma) \ + (PDO_TYPE(PDO_TYPE_VAR) | PDO_VAR_MIN_VOLT(min_mv) | \ + PDO_VAR_MAX_VOLT(max_mv) | PDO_VAR_MAX_CURR(max_ma)) + +static inline enum pd_pdo_type pdo_type(u32 pdo) +{ + return (pdo >> PDO_TYPE_SHIFT) & PDO_TYPE_MASK; +} + +static inline unsigned int pdo_fixed_voltage(u32 pdo) +{ + return ((pdo >> PDO_FIXED_VOLT_SHIFT) & PDO_VOLT_MASK) * 50; +} + +static inline unsigned int pdo_min_voltage(u32 pdo) +{ + return ((pdo >> PDO_VAR_MIN_VOLT_SHIFT) & PDO_VOLT_MASK) * 50; +} + +static inline unsigned int pdo_max_voltage(u32 pdo) +{ + return ((pdo >> PDO_VAR_MAX_VOLT_SHIFT) & PDO_VOLT_MASK) * 50; +} + +static inline unsigned int pdo_max_current(u32 pdo) +{ + return ((pdo >> PDO_VAR_MAX_CURR_SHIFT) & PDO_CURR_MASK) * 10; +} + +static inline unsigned int pdo_max_power(u32 pdo) +{ + return ((pdo >> PDO_BATT_MAX_PWR_SHIFT) & PDO_PWR_MASK) * 250; +} + +/* RDO: Request Data Object */ +#define RDO_OBJ_POS_SHIFT 28 +#define RDO_OBJ_POS_MASK 0x7 +#define RDO_GIVE_BACK BIT(27) /* Supports reduced operating current */ +#define RDO_CAP_MISMATCH BIT(26) /* Not satisfied by source caps */ +#define RDO_USB_COMM BIT(25) /* USB communications capable */ +#define RDO_NO_SUSPEND BIT(24) /* USB Suspend not supported */ + +#define RDO_PWR_MASK 0x3ff +#define RDO_CURR_MASK 0x3ff + +#define RDO_FIXED_OP_CURR_SHIFT 10 +#define RDO_FIXED_MAX_CURR_SHIFT 0 + +#define RDO_OBJ(idx) (((idx) & RDO_OBJ_POS_MASK) << RDO_OBJ_POS_SHIFT) + +#define PDO_FIXED_OP_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_OP_CURR_SHIFT) +#define PDO_FIXED_MAX_CURR(ma) ((((ma) / 10) & RDO_CURR_MASK) << RDO_FIXED_MAX_CURR_SHIFT) + +#define RDO_FIXED(idx, op_ma, max_ma, flags) \ + (RDO_OBJ(idx) | (flags) | \ + PDO_FIXED_OP_CURR(op_ma) | PDO_FIXED_MAX_CURR(max_ma)) + +#define RDO_BATT_OP_PWR_SHIFT 10 /* 250mW units */ +#define RDO_BATT_MAX_PWR_SHIFT 0 /* 250mW units */ + +#define RDO_BATT_OP_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_OP_PWR_SHIFT) +#define RDO_BATT_MAX_PWR(mw) ((((mw) / 250) & RDO_PWR_MASK) << RDO_BATT_MAX_PWR_SHIFT) + +#define RDO_BATT(idx, op_mw, max_mw, flags) \ + (RDO_OBJ(idx) | (flags) | \ + RDO_BATT_OP_PWR(op_mw) | RDO_BATT_MAX_PWR(max_mw)) + +static inline unsigned int rdo_index(u32 rdo) +{ + return (rdo >> RDO_OBJ_POS_SHIFT) & RDO_OBJ_POS_MASK; +} + +static inline unsigned int rdo_op_current(u32 rdo) +{ + return ((rdo >> RDO_FIXED_OP_CURR_SHIFT) & RDO_CURR_MASK) * 10; +} + +static inline unsigned int rdo_max_current(u32 rdo) +{ + return ((rdo >> RDO_FIXED_MAX_CURR_SHIFT) & + RDO_CURR_MASK) * 10; +} + +static inline unsigned int rdo_op_power(u32 rdo) +{ + return ((rdo >> RDO_BATT_OP_PWR_SHIFT) & RDO_PWR_MASK) * 250; +} + +static inline unsigned int rdo_max_power(u32 rdo) +{ + return ((rdo >> RDO_BATT_MAX_PWR_SHIFT) & RDO_PWR_MASK) * 250; +} + +/* USB PD timers and counters */ +#define PD_T_NO_RESPONSE 5000 /* 4.5 - 5.5 seconds */ +#define PD_T_DB_DETECT 10000 /* 10 - 15 seconds */ +#define PD_T_SEND_SOURCE_CAP 150 /* 100 - 200 ms */ +#define PD_T_SENDER_RESPONSE 60 /* 24 - 30 ms, relaxed */ +#define PD_T_SOURCE_ACTIVITY 45 +#define PD_T_SINK_ACTIVITY 135 +#define PD_T_SINK_WAIT_CAP 240 +#define PD_T_PS_TRANSITION 500 +#define PD_T_SRC_TRANSITION 35 +#define PD_T_DRP_SNK 40 +#define PD_T_DRP_SRC 30 +#define PD_T_PS_SOURCE_OFF 920 +#define PD_T_PS_SOURCE_ON 480 +#define PD_T_PS_HARD_RESET 30 +#define PD_T_SRC_RECOVER 760 +#define PD_T_SRC_RECOVER_MAX 1000 +#define PD_T_SRC_TURN_ON 275 +#define PD_T_SAFE_0V 650 +#define PD_T_VCONN_SOURCE_ON 100 +#define PD_T_SINK_REQUEST 100 /* 100 ms minimum */ +#define PD_T_ERROR_RECOVERY 100 /* minimum 25 is insufficient */ + +#define PD_T_DRP_TRY 100 /* 75 - 150 ms */ +#define PD_T_DRP_TRYWAIT 600 /* 400 - 800 ms */ + +#define PD_T_CC_DEBOUNCE 200 /* 100 - 200 ms */ +#define PD_T_PD_DEBOUNCE 20 /* 10 - 20 ms */ + +#define PD_N_CAPS_COUNT (PD_T_NO_RESPONSE / PD_T_SEND_SOURCE_CAP) +#define PD_N_HARD_RESET_COUNT 2 + +#endif /* __LINUX_USB_PD_H */ diff --git a/drivers/staging/typec/pd_bdo.h b/drivers/staging/typec/pd_bdo.h new file mode 100644 index 000000000000..90b94d9fea5d --- /dev/null +++ b/drivers/staging/typec/pd_bdo.h @@ -0,0 +1,31 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_USB_PD_BDO_H +#define __LINUX_USB_PD_BDO_H + +/* BDO : BIST Data Object */ +#define BDO_MODE_RECV (0 << 28) +#define BDO_MODE_TRANSMIT (1 << 28) +#define BDO_MODE_COUNTERS (2 << 28) +#define BDO_MODE_CARRIER0 (3 << 28) +#define BDO_MODE_CARRIER1 (4 << 28) +#define BDO_MODE_CARRIER2 (5 << 28) +#define BDO_MODE_CARRIER3 (6 << 28) +#define BDO_MODE_EYE (7 << 28) +#define BDO_MODE_TESTDATA (8 << 28) + +#define BDO_MODE_MASK(mode) ((mode) & 0xf0000000) + +#endif diff --git a/drivers/staging/typec/pd_vdo.h b/drivers/staging/typec/pd_vdo.h new file mode 100644 index 000000000000..dba172e0e0d1 --- /dev/null +++ b/drivers/staging/typec/pd_vdo.h @@ -0,0 +1,249 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_USB_PD_VDO_H +#define __LINUX_USB_PD_VDO_H + +#include "pd.h" + +/* + * VDO : Vendor Defined Message Object + * VDM object is minimum of VDM header + 6 additional data objects. + */ + +/* + * VDM header + * ---------- + * <31:16> :: SVID + * <15> :: VDM type ( 1b == structured, 0b == unstructured ) + * <14:13> :: Structured VDM version (can only be 00 == 1.0 currently) + * <12:11> :: reserved + * <10:8> :: object position (1-7 valid ... used for enter/exit mode only) + * <7:6> :: command type (SVDM only?) + * <5> :: reserved (SVDM), command type (UVDM) + * <4:0> :: command + */ +#define VDO_MAX_SIZE 7 +#define VDO(vid, type, custom) \ + (((vid) << 16) | \ + ((type) << 15) | \ + ((custom) & 0x7FFF)) + +#define VDO_SVDM_TYPE (1 << 15) +#define VDO_SVDM_VERS(x) ((x) << 13) +#define VDO_OPOS(x) ((x) << 8) +#define VDO_CMDT(x) ((x) << 6) +#define VDO_OPOS_MASK VDO_OPOS(0x7) +#define VDO_CMDT_MASK VDO_CMDT(0x3) + +#define CMDT_INIT 0 +#define CMDT_RSP_ACK 1 +#define CMDT_RSP_NAK 2 +#define CMDT_RSP_BUSY 3 + +/* reserved for SVDM ... for Google UVDM */ +#define VDO_SRC_INITIATOR (0 << 5) +#define VDO_SRC_RESPONDER (1 << 5) + +#define CMD_DISCOVER_IDENT 1 +#define CMD_DISCOVER_SVID 2 +#define CMD_DISCOVER_MODES 3 +#define CMD_ENTER_MODE 4 +#define CMD_EXIT_MODE 5 +#define CMD_ATTENTION 6 + +#define VDO_CMD_VENDOR(x) (((10 + (x)) & 0x1f)) + +/* ChromeOS specific commands */ +#define VDO_CMD_VERSION VDO_CMD_VENDOR(0) +#define VDO_CMD_SEND_INFO VDO_CMD_VENDOR(1) +#define VDO_CMD_READ_INFO VDO_CMD_VENDOR(2) +#define VDO_CMD_REBOOT VDO_CMD_VENDOR(5) +#define VDO_CMD_FLASH_ERASE VDO_CMD_VENDOR(6) +#define VDO_CMD_FLASH_WRITE VDO_CMD_VENDOR(7) +#define VDO_CMD_ERASE_SIG VDO_CMD_VENDOR(8) +#define VDO_CMD_PING_ENABLE VDO_CMD_VENDOR(10) +#define VDO_CMD_CURRENT VDO_CMD_VENDOR(11) +#define VDO_CMD_FLIP VDO_CMD_VENDOR(12) +#define VDO_CMD_GET_LOG VDO_CMD_VENDOR(13) +#define VDO_CMD_CCD_EN VDO_CMD_VENDOR(14) + +#define PD_VDO_VID(vdo) ((vdo) >> 16) +#define PD_VDO_SVDM(vdo) (((vdo) >> 15) & 1) +#define PD_VDO_OPOS(vdo) (((vdo) >> 8) & 0x7) +#define PD_VDO_CMD(vdo) ((vdo) & 0x1f) +#define PD_VDO_CMDT(vdo) (((vdo) >> 6) & 0x3) + +/* + * SVDM Identity request -> response + * + * Request is simply properly formatted SVDM header + * + * Response is 4 data objects: + * [0] :: SVDM header + * [1] :: Identitiy header + * [2] :: Cert Stat VDO + * [3] :: (Product | Cable) VDO + * [4] :: AMA VDO + * + */ +#define VDO_INDEX_HDR 0 +#define VDO_INDEX_IDH 1 +#define VDO_INDEX_CSTAT 2 +#define VDO_INDEX_CABLE 3 +#define VDO_INDEX_PRODUCT 3 +#define VDO_INDEX_AMA 4 + +/* + * SVDM Identity Header + * -------------------- + * <31> :: data capable as a USB host + * <30> :: data capable as a USB device + * <29:27> :: product type + * <26> :: modal operation supported (1b == yes) + * <25:16> :: Reserved, Shall be set to zero + * <15:0> :: USB-IF assigned VID for this cable vendor + */ +#define IDH_PTYPE_UNDEF 0 +#define IDH_PTYPE_HUB 1 +#define IDH_PTYPE_PERIPH 2 +#define IDH_PTYPE_PCABLE 3 +#define IDH_PTYPE_ACABLE 4 +#define IDH_PTYPE_AMA 5 + +#define VDO_IDH(usbh, usbd, ptype, is_modal, vid) \ + ((usbh) << 31 | (usbd) << 30 | ((ptype) & 0x7) << 27 \ + | (is_modal) << 26 | ((vid) & 0xffff)) + +#define PD_IDH_PTYPE(vdo) (((vdo) >> 27) & 0x7) +#define PD_IDH_VID(vdo) ((vdo) & 0xffff) +#define PD_IDH_MODAL_SUPP(vdo) ((vdo) & (1 << 26)) + +/* + * Cert Stat VDO + * ------------- + * <31:0> : USB-IF assigned XID for this cable + */ +#define PD_CSTAT_XID(vdo) (vdo) + +/* + * Product VDO + * ----------- + * <31:16> : USB Product ID + * <15:0> : USB bcdDevice + */ +#define VDO_PRODUCT(pid, bcd) (((pid) & 0xffff) << 16 | ((bcd) & 0xffff)) +#define PD_PRODUCT_PID(vdo) (((vdo) >> 16) & 0xffff) + +/* + * Cable VDO + * --------- + * <31:28> :: Cable HW version + * <27:24> :: Cable FW version + * <23:20> :: Reserved, Shall be set to zero + * <19:18> :: type-C to Type-A/B/C (00b == A, 01 == B, 10 == C) + * <17> :: Type-C to Plug/Receptacle (0b == plug, 1b == receptacle) + * <16:13> :: cable latency (0001 == <10ns(~1m length)) + * <12:11> :: cable termination type (11b == both ends active VCONN req) + * <10> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable) + * <9> :: SSTX2 Directionality support + * <8> :: SSRX1 Directionality support + * <7> :: SSRX2 Directionality support + * <6:5> :: Vbus current handling capability + * <4> :: Vbus through cable (0b == no, 1b == yes) + * <3> :: SOP" controller present? (0b == no, 1b == yes) + * <2:0> :: USB SS Signaling support + */ +#define CABLE_ATYPE 0 +#define CABLE_BTYPE 1 +#define CABLE_CTYPE 2 +#define CABLE_PLUG 0 +#define CABLE_RECEPTACLE 1 +#define CABLE_CURR_1A5 0 +#define CABLE_CURR_3A 1 +#define CABLE_CURR_5A 2 +#define CABLE_USBSS_U2_ONLY 0 +#define CABLE_USBSS_U31_GEN1 1 +#define CABLE_USBSS_U31_GEN2 2 +#define VDO_CABLE(hw, fw, cbl, gdr, lat, term, tx1d, tx2d, rx1d, rx2d, cur,\ + vps, sopp, usbss) \ + (((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 | ((cbl) & 0x3) << 18 \ + | (gdr) << 17 | ((lat) & 0x7) << 13 | ((term) & 0x3) << 11 \ + | (tx1d) << 10 | (tx2d) << 9 | (rx1d) << 8 | (rx2d) << 7 \ + | ((cur) & 0x3) << 5 | (vps) << 4 | (sopp) << 3 \ + | ((usbss) & 0x7)) + +/* + * AMA VDO + * --------- + * <31:28> :: Cable HW version + * <27:24> :: Cable FW version + * <23:12> :: Reserved, Shall be set to zero + * <11> :: SSTX1 Directionality support (0b == fixed, 1b == cfgable) + * <10> :: SSTX2 Directionality support + * <9> :: SSRX1 Directionality support + * <8> :: SSRX2 Directionality support + * <7:5> :: Vconn power + * <4> :: Vconn power required + * <3> :: Vbus power required + * <2:0> :: USB SS Signaling support + */ +#define VDO_AMA(hw, fw, tx1d, tx2d, rx1d, rx2d, vcpwr, vcr, vbr, usbss) \ + (((hw) & 0x7) << 28 | ((fw) & 0x7) << 24 \ + | (tx1d) << 11 | (tx2d) << 10 | (rx1d) << 9 | (rx2d) << 8 \ + | ((vcpwr) & 0x7) << 5 | (vcr) << 4 | (vbr) << 3 \ + | ((usbss) & 0x7)) + +#define PD_VDO_AMA_VCONN_REQ(vdo) (((vdo) >> 4) & 1) +#define PD_VDO_AMA_VBUS_REQ(vdo) (((vdo) >> 3) & 1) + +#define AMA_VCONN_PWR_1W 0 +#define AMA_VCONN_PWR_1W5 1 +#define AMA_VCONN_PWR_2W 2 +#define AMA_VCONN_PWR_3W 3 +#define AMA_VCONN_PWR_4W 4 +#define AMA_VCONN_PWR_5W 5 +#define AMA_VCONN_PWR_6W 6 +#define AMA_USBSS_U2_ONLY 0 +#define AMA_USBSS_U31_GEN1 1 +#define AMA_USBSS_U31_GEN2 2 +#define AMA_USBSS_BBONLY 3 + +/* + * SVDM Discover SVIDs request -> response + * + * Request is properly formatted VDM Header with discover SVIDs command. + * Response is a set of SVIDs of all all supported SVIDs with all zero's to + * mark the end of SVIDs. If more than 12 SVIDs are supported command SHOULD be + * repeated. + */ +#define VDO_SVID(svid0, svid1) (((svid0) & 0xffff) << 16 | ((svid1) & 0xffff)) +#define PD_VDO_SVID_SVID0(vdo) ((vdo) >> 16) +#define PD_VDO_SVID_SVID1(vdo) ((vdo) & 0xffff) + +/* USB-IF SIDs */ +#define USB_SID_PD 0xff00 /* power delivery */ +#define USB_SID_DISPLAYPORT 0xff01 +#define USB_SID_MHL 0xff02 /* Mobile High-Definition Link */ + +/* VDM command timeouts (in ms) */ + +#define PD_T_VDM_UNSTRUCTURED 500 +#define PD_T_VDM_BUSY 100 +#define PD_T_VDM_WAIT_MODE_E 100 +#define PD_T_VDM_SNDR_RSP 30 +#define PD_T_VDM_E_MODE 25 +#define PD_T_VDM_RCVR_RSP 15 + +#endif /* __LINUX_USB_PD_VDO_H */ diff --git a/drivers/staging/typec/tcpci.c b/drivers/staging/typec/tcpci.c new file mode 100644 index 000000000000..5e5be74c7850 --- /dev/null +++ b/drivers/staging/typec/tcpci.c @@ -0,0 +1,526 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * USB Type-C Port Controller Interface. + */ + +#include <linux/delay.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/i2c.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/usb/typec.h> + +#include "pd.h" +#include "tcpci.h" +#include "tcpm.h" + +#define PD_RETRY_COUNT 3 + +struct tcpci { + struct device *dev; + struct i2c_client *client; + + struct tcpm_port *port; + + struct regmap *regmap; + + bool controls_vbus; + + struct tcpc_dev tcpc; +}; + +static inline struct tcpci *tcpc_to_tcpci(struct tcpc_dev *tcpc) +{ + return container_of(tcpc, struct tcpci, tcpc); +} + +static int tcpci_read16(struct tcpci *tcpci, unsigned int reg, + unsigned int *val) +{ + return regmap_raw_read(tcpci->regmap, reg, val, sizeof(u16)); +} + +static int tcpci_write16(struct tcpci *tcpci, unsigned int reg, u16 val) +{ + return regmap_raw_write(tcpci->regmap, reg, &val, sizeof(u16)); +} + +static int tcpci_set_cc(struct tcpc_dev *tcpc, enum typec_cc_status cc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + switch (cc) { + case TYPEC_CC_RA: + reg = (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RA << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + case TYPEC_CC_RD: + reg = (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RD << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + case TYPEC_CC_RP_DEF: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_DEF << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_1_5: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_1_5 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_3_0: + reg = (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_RP << TCPC_ROLE_CTRL_CC2_SHIFT) | + (TCPC_ROLE_CTRL_RP_VAL_3_0 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_OPEN: + default: + reg = (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC1_SHIFT) | + (TCPC_ROLE_CTRL_CC_OPEN << TCPC_ROLE_CTRL_CC2_SHIFT); + break; + } + + ret = regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_start_drp_toggling(struct tcpc_dev *tcpc, + enum typec_cc_status cc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg = TCPC_ROLE_CTRL_DRP; + + switch (cc) { + default: + case TYPEC_CC_RP_DEF: + reg |= (TCPC_ROLE_CTRL_RP_VAL_DEF << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_1_5: + reg |= (TCPC_ROLE_CTRL_RP_VAL_1_5 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + case TYPEC_CC_RP_3_0: + reg |= (TCPC_ROLE_CTRL_RP_VAL_3_0 << + TCPC_ROLE_CTRL_RP_VAL_SHIFT); + break; + } + + return regmap_write(tcpci->regmap, TCPC_ROLE_CTRL, reg); +} + +static enum typec_cc_status tcpci_to_typec_cc(unsigned int cc, bool sink) +{ + switch (cc) { + case 0x1: + return sink ? TYPEC_CC_RP_DEF : TYPEC_CC_RA; + case 0x2: + return sink ? TYPEC_CC_RP_1_5 : TYPEC_CC_RD; + case 0x3: + if (sink) + return TYPEC_CC_RP_3_0; + case 0x0: + default: + return TYPEC_CC_OPEN; + } +} + +static int tcpci_get_cc(struct tcpc_dev *tcpc, + enum typec_cc_status *cc1, enum typec_cc_status *cc2) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + ret = regmap_read(tcpci->regmap, TCPC_CC_STATUS, ®); + if (ret < 0) + return ret; + + *cc1 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC1_SHIFT) & + TCPC_CC_STATUS_CC1_MASK, + reg & TCPC_CC_STATUS_TERM); + *cc2 = tcpci_to_typec_cc((reg >> TCPC_CC_STATUS_CC2_SHIFT) & + TCPC_CC_STATUS_CC2_MASK, + reg & TCPC_CC_STATUS_TERM); + + return 0; +} + +static int tcpci_set_polarity(struct tcpc_dev *tcpc, + enum typec_cc_polarity polarity) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + int ret; + + ret = regmap_write(tcpci->regmap, TCPC_TCPC_CTRL, + (polarity == TYPEC_POLARITY_CC2) ? + TCPC_TCPC_CTRL_ORIENTATION : 0); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_set_vconn(struct tcpc_dev *tcpc, bool enable) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + int ret; + + ret = regmap_write(tcpci->regmap, TCPC_POWER_CTRL, + enable ? TCPC_POWER_CTRL_VCONN_ENABLE : 0); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_set_roles(struct tcpc_dev *tcpc, bool attached, + enum typec_role role, enum typec_data_role data) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + reg = PD_REV20 << TCPC_MSG_HDR_INFO_REV_SHIFT; + if (role == TYPEC_SOURCE) + reg |= TCPC_MSG_HDR_INFO_PWR_ROLE; + if (data == TYPEC_HOST) + reg |= TCPC_MSG_HDR_INFO_DATA_ROLE; + ret = regmap_write(tcpci->regmap, TCPC_MSG_HDR_INFO, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_set_pd_rx(struct tcpc_dev *tcpc, bool enable) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg = 0; + int ret; + + if (enable) + reg = TCPC_RX_DETECT_SOP | TCPC_RX_DETECT_HARD_RESET; + ret = regmap_write(tcpci->regmap, TCPC_RX_DETECT, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_get_vbus(struct tcpc_dev *tcpc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg; + int ret; + + ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®); + if (ret < 0) + return ret; + + return !!(reg & TCPC_POWER_STATUS_VBUS_PRES); +} + +static int tcpci_set_vbus(struct tcpc_dev *tcpc, bool source, bool sink) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + int ret; + + /* Disable both source and sink first before enabling anything */ + + if (!source) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_DISABLE_SRC_VBUS); + if (ret < 0) + return ret; + } + + if (!sink) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_DISABLE_SINK_VBUS); + if (ret < 0) + return ret; + } + + if (source) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_SRC_VBUS_DEFAULT); + if (ret < 0) + return ret; + } + + if (sink) { + ret = regmap_write(tcpci->regmap, TCPC_COMMAND, + TCPC_CMD_SINK_VBUS); + if (ret < 0) + return ret; + } + + return 0; +} + +static int tcpci_pd_transmit(struct tcpc_dev *tcpc, + enum tcpm_transmit_type type, + const struct pd_message *msg) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned int reg, cnt, header; + int ret; + + cnt = msg ? pd_header_cnt(msg->header) * 4 : 0; + ret = regmap_write(tcpci->regmap, TCPC_TX_BYTE_CNT, cnt + 2); + if (ret < 0) + return ret; + + header = msg ? msg->header : 0; + ret = tcpci_write16(tcpci, TCPC_TX_HDR, header); + if (ret < 0) + return ret; + + if (cnt > 0) { + ret = regmap_raw_write(tcpci->regmap, TCPC_TX_DATA, + &msg->payload, cnt); + if (ret < 0) + return ret; + } + + reg = (PD_RETRY_COUNT << TCPC_TRANSMIT_RETRY_SHIFT) | + (type << TCPC_TRANSMIT_TYPE_SHIFT); + ret = regmap_write(tcpci->regmap, TCPC_TRANSMIT, reg); + if (ret < 0) + return ret; + + return 0; +} + +static int tcpci_init(struct tcpc_dev *tcpc) +{ + struct tcpci *tcpci = tcpc_to_tcpci(tcpc); + unsigned long timeout = jiffies + msecs_to_jiffies(2000); /* XXX */ + unsigned int reg; + int ret; + + while (time_before_eq(jiffies, timeout)) { + ret = regmap_read(tcpci->regmap, TCPC_POWER_STATUS, ®); + if (ret < 0) + return ret; + if (!(reg & TCPC_POWER_STATUS_UNINIT)) + break; + usleep_range(10000, 20000); + } + if (time_after(jiffies, timeout)) + return -ETIMEDOUT; + + /* Clear all events */ + ret = tcpci_write16(tcpci, TCPC_ALERT, 0xffff); + if (ret < 0) + return ret; + + if (tcpci->controls_vbus) + reg = TCPC_POWER_STATUS_VBUS_PRES; + else + reg = 0; + ret = regmap_write(tcpci->regmap, TCPC_POWER_STATUS_MASK, reg); + if (ret < 0) + return ret; + + reg = TCPC_ALERT_TX_SUCCESS | TCPC_ALERT_TX_FAILED | + TCPC_ALERT_TX_DISCARDED | TCPC_ALERT_RX_STATUS | + TCPC_ALERT_RX_HARD_RST | TCPC_ALERT_CC_STATUS; + if (tcpci->controls_vbus) + reg |= TCPC_ALERT_POWER_STATUS; + return tcpci_write16(tcpci, TCPC_ALERT_MASK, reg); +} + +static irqreturn_t tcpci_irq(int irq, void *dev_id) +{ + struct tcpci *tcpci = dev_id; + unsigned int status, reg; + + tcpci_read16(tcpci, TCPC_ALERT, &status); + + /* + * Clear alert status for everything except RX_STATUS, which shouldn't + * be cleared until we have successfully retrieved message. + */ + if (status & ~TCPC_ALERT_RX_STATUS) + tcpci_write16(tcpci, TCPC_ALERT, + status & ~TCPC_ALERT_RX_STATUS); + + if (status & TCPC_ALERT_CC_STATUS) + tcpm_cc_change(tcpci->port); + + if (status & TCPC_ALERT_POWER_STATUS) { + regmap_read(tcpci->regmap, TCPC_POWER_STATUS_MASK, ®); + + /* + * If power status mask has been reset, then the TCPC + * has reset. + */ + if (reg == 0xff) + tcpm_tcpc_reset(tcpci->port); + else + tcpm_vbus_change(tcpci->port); + } + + if (status & TCPC_ALERT_RX_STATUS) { + struct pd_message msg; + unsigned int cnt; + + regmap_read(tcpci->regmap, TCPC_RX_BYTE_CNT, &cnt); + + tcpci_read16(tcpci, TCPC_RX_HDR, ®); + msg.header = reg; + + if (WARN_ON(cnt > sizeof(msg.payload))) + cnt = sizeof(msg.payload); + + if (cnt > 0) + regmap_raw_read(tcpci->regmap, TCPC_RX_DATA, + &msg.payload, cnt); + + /* Read complete, clear RX status alert bit */ + tcpci_write16(tcpci, TCPC_ALERT, TCPC_ALERT_RX_STATUS); + + tcpm_pd_receive(tcpci->port, &msg); + } + + if (status & TCPC_ALERT_RX_HARD_RST) + tcpm_pd_hard_reset(tcpci->port); + + if (status & TCPC_ALERT_TX_SUCCESS) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_SUCCESS); + else if (status & TCPC_ALERT_TX_DISCARDED) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_DISCARDED); + else if (status & TCPC_ALERT_TX_FAILED) + tcpm_pd_transmit_complete(tcpci->port, TCPC_TX_FAILED); + + return IRQ_HANDLED; +} + +static const struct regmap_config tcpci_regmap_config = { + .reg_bits = 8, + .val_bits = 8, + + .max_register = 0x7F, /* 0x80 .. 0xFF are vendor defined */ +}; + +const struct tcpc_config tcpci_tcpc_config = { + .type = TYPEC_PORT_DFP, + .default_role = TYPEC_SINK, +}; + +static int tcpci_parse_config(struct tcpci *tcpci) +{ + tcpci->controls_vbus = true; /* XXX */ + + /* TODO: Populate struct tcpc_config from ACPI/device-tree */ + tcpci->tcpc.config = &tcpci_tcpc_config; + + return 0; +} + +static int tcpci_probe(struct i2c_client *client, + const struct i2c_device_id *i2c_id) +{ + struct tcpci *tcpci; + int err; + + tcpci = devm_kzalloc(&client->dev, sizeof(*tcpci), GFP_KERNEL); + if (!tcpci) + return -ENOMEM; + + tcpci->client = client; + tcpci->dev = &client->dev; + i2c_set_clientdata(client, tcpci); + tcpci->regmap = devm_regmap_init_i2c(client, &tcpci_regmap_config); + if (IS_ERR(tcpci->regmap)) + return PTR_ERR(tcpci->regmap); + + tcpci->tcpc.init = tcpci_init; + tcpci->tcpc.get_vbus = tcpci_get_vbus; + tcpci->tcpc.set_vbus = tcpci_set_vbus; + tcpci->tcpc.set_cc = tcpci_set_cc; + tcpci->tcpc.get_cc = tcpci_get_cc; + tcpci->tcpc.set_polarity = tcpci_set_polarity; + tcpci->tcpc.set_vconn = tcpci_set_vconn; + tcpci->tcpc.start_drp_toggling = tcpci_start_drp_toggling; + + tcpci->tcpc.set_pd_rx = tcpci_set_pd_rx; + tcpci->tcpc.set_roles = tcpci_set_roles; + tcpci->tcpc.pd_transmit = tcpci_pd_transmit; + + err = tcpci_parse_config(tcpci); + if (err < 0) + return err; + + /* Disable chip interrupts */ + tcpci_write16(tcpci, TCPC_ALERT_MASK, 0); + + err = devm_request_threaded_irq(tcpci->dev, client->irq, NULL, + tcpci_irq, + IRQF_ONESHOT | IRQF_TRIGGER_LOW, + dev_name(tcpci->dev), tcpci); + if (err < 0) + return err; + + tcpci->port = tcpm_register_port(tcpci->dev, &tcpci->tcpc); + return PTR_ERR_OR_ZERO(tcpci->port); +} + +static int tcpci_remove(struct i2c_client *client) +{ + struct tcpci *tcpci = i2c_get_clientdata(client); + + tcpm_unregister_port(tcpci->port); + + return 0; +} + +static const struct i2c_device_id tcpci_id[] = { + { "tcpci", 0 }, + { } +}; +MODULE_DEVICE_TABLE(i2c, tcpci_id); + +#ifdef CONFIG_OF +static const struct of_device_id tcpci_of_match[] = { + { .compatible = "usb,tcpci", }, + {}, +}; +MODULE_DEVICE_TABLE(of, tcpci_of_match); +#endif + +static struct i2c_driver tcpci_i2c_driver = { + .driver = { + .name = "tcpci", + .of_match_table = of_match_ptr(tcpci_of_match), + }, + .probe = tcpci_probe, + .remove = tcpci_remove, + .id_table = tcpci_id, +}; +module_i2c_driver(tcpci_i2c_driver); + +MODULE_DESCRIPTION("USB Type-C Port Controller Interface driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/typec/tcpci.h b/drivers/staging/typec/tcpci.h new file mode 100644 index 000000000000..10b04c8723da --- /dev/null +++ b/drivers/staging/typec/tcpci.h @@ -0,0 +1,133 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * USB Type-C Port Controller Interface. + */ + +#ifndef __LINUX_USB_TCPCI_H +#define __LINUX_USB_TCPCI_H + +#define TCPC_VENDOR_ID 0x0 +#define TCPC_PRODUCT_ID 0x2 +#define TCPC_BCD_DEV 0x4 +#define TCPC_TC_REV 0x6 +#define TCPC_PD_REV 0x8 +#define TCPC_PD_INT_REV 0xa + +#define TCPC_ALERT 0x10 +#define TCPC_ALERT_VBUS_DISCNCT BIT(11) +#define TCPC_ALERT_RX_BUF_OVF BIT(10) +#define TCPC_ALERT_FAULT BIT(9) +#define TCPC_ALERT_V_ALARM_LO BIT(8) +#define TCPC_ALERT_V_ALARM_HI BIT(7) +#define TCPC_ALERT_TX_SUCCESS BIT(6) +#define TCPC_ALERT_TX_DISCARDED BIT(5) +#define TCPC_ALERT_TX_FAILED BIT(4) +#define TCPC_ALERT_RX_HARD_RST BIT(3) +#define TCPC_ALERT_RX_STATUS BIT(2) +#define TCPC_ALERT_POWER_STATUS BIT(1) +#define TCPC_ALERT_CC_STATUS BIT(0) + +#define TCPC_ALERT_MASK 0x12 +#define TCPC_POWER_STATUS_MASK 0x14 +#define TCPC_FAULT_STATUS_MASK 0x15 +#define TCPC_CONFIG_STD_OUTPUT 0x18 + +#define TCPC_TCPC_CTRL 0x19 +#define TCPC_TCPC_CTRL_ORIENTATION BIT(0) + +#define TCPC_ROLE_CTRL 0x1a +#define TCPC_ROLE_CTRL_DRP BIT(6) +#define TCPC_ROLE_CTRL_RP_VAL_SHIFT 4 +#define TCPC_ROLE_CTRL_RP_VAL_MASK 0x3 +#define TCPC_ROLE_CTRL_RP_VAL_DEF 0x0 +#define TCPC_ROLE_CTRL_RP_VAL_1_5 0x1 +#define TCPC_ROLE_CTRL_RP_VAL_3_0 0x2 +#define TCPC_ROLE_CTRL_CC2_SHIFT 2 +#define TCPC_ROLE_CTRL_CC2_MASK 0x3 +#define TCPC_ROLE_CTRL_CC1_SHIFT 0 +#define TCPC_ROLE_CTRL_CC1_MASK 0x3 +#define TCPC_ROLE_CTRL_CC_RA 0x0 +#define TCPC_ROLE_CTRL_CC_RP 0x1 +#define TCPC_ROLE_CTRL_CC_RD 0x2 +#define TCPC_ROLE_CTRL_CC_OPEN 0x3 + +#define TCPC_FAULT_CTRL 0x1b + +#define TCPC_POWER_CTRL 0x1c +#define TCPC_POWER_CTRL_VCONN_ENABLE BIT(0) + +#define TCPC_CC_STATUS 0x1d +#define TCPC_CC_STATUS_TERM BIT(4) +#define TCPC_CC_STATUS_CC2_SHIFT 2 +#define TCPC_CC_STATUS_CC2_MASK 0x3 +#define TCPC_CC_STATUS_CC1_SHIFT 0 +#define TCPC_CC_STATUS_CC1_MASK 0x3 + +#define TCPC_POWER_STATUS 0x1e +#define TCPC_POWER_STATUS_UNINIT BIT(6) +#define TCPC_POWER_STATUS_VBUS_DET BIT(3) +#define TCPC_POWER_STATUS_VBUS_PRES BIT(2) + +#define TCPC_FAULT_STATUS 0x1f + +#define TCPC_COMMAND 0x23 +#define TCPC_CMD_WAKE_I2C 0x11 +#define TCPC_CMD_DISABLE_VBUS_DETECT 0x22 +#define TCPC_CMD_ENABLE_VBUS_DETECT 0x33 +#define TCPC_CMD_DISABLE_SINK_VBUS 0x44 +#define TCPC_CMD_SINK_VBUS 0x55 +#define TCPC_CMD_DISABLE_SRC_VBUS 0x66 +#define TCPC_CMD_SRC_VBUS_DEFAULT 0x77 +#define TCPC_CMD_SRC_VBUS_HIGH 0x88 +#define TCPC_CMD_LOOK4CONNECTION 0x99 +#define TCPC_CMD_RXONEMORE 0xAA +#define TCPC_CMD_I2C_IDLE 0xFF + +#define TCPC_DEV_CAP_1 0x24 +#define TCPC_DEV_CAP_2 0x26 +#define TCPC_STD_INPUT_CAP 0x28 +#define TCPC_STD_OUTPUT_CAP 0x29 + +#define TCPC_MSG_HDR_INFO 0x2e +#define TCPC_MSG_HDR_INFO_DATA_ROLE BIT(3) +#define TCPC_MSG_HDR_INFO_PWR_ROLE BIT(0) +#define TCPC_MSG_HDR_INFO_REV_SHIFT 1 +#define TCPC_MSG_HDR_INFO_REV_MASK 0x3 + +#define TCPC_RX_DETECT 0x2f +#define TCPC_RX_DETECT_HARD_RESET BIT(5) +#define TCPC_RX_DETECT_SOP BIT(0) + +#define TCPC_RX_BYTE_CNT 0x30 +#define TCPC_RX_BUF_FRAME_TYPE 0x31 +#define TCPC_RX_HDR 0x32 +#define TCPC_RX_DATA 0x34 /* through 0x4f */ + +#define TCPC_TRANSMIT 0x50 +#define TCPC_TRANSMIT_RETRY_SHIFT 4 +#define TCPC_TRANSMIT_RETRY_MASK 0x3 +#define TCPC_TRANSMIT_TYPE_SHIFT 0 +#define TCPC_TRANSMIT_TYPE_MASK 0x7 + +#define TCPC_TX_BYTE_CNT 0x51 +#define TCPC_TX_HDR 0x52 +#define TCPC_TX_DATA 0x54 /* through 0x6f */ + +#define TCPC_VBUS_VOLTAGE 0x70 +#define TCPC_VBUS_SINK_DISCONNECT_THRESH 0x72 +#define TCPC_VBUS_STOP_DISCHARGE_THRESH 0x74 +#define TCPC_VBUS_VOLTAGE_ALARM_HI_CFG 0x76 +#define TCPC_VBUS_VOLTAGE_ALARM_LO_CFG 0x78 + +#endif /* __LINUX_USB_TCPCI_H */ diff --git a/drivers/staging/typec/tcpm.c b/drivers/staging/typec/tcpm.c new file mode 100644 index 000000000000..abba655ba00a --- /dev/null +++ b/drivers/staging/typec/tcpm.c @@ -0,0 +1,3465 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * USB Power Delivery protocol stack. + */ + +#include <linux/completion.h> +#include <linux/debugfs.h> +#include <linux/device.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/mutex.h> +#include <linux/proc_fs.h> +#include <linux/sched/clock.h> +#include <linux/seq_file.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/usb/typec.h> +#include <linux/workqueue.h> + +#include "pd.h" +#include "pd_vdo.h" +#include "pd_bdo.h" +#include "tcpm.h" + +#define FOREACH_STATE(S) \ + S(INVALID_STATE), \ + S(DRP_TOGGLING), \ + S(SRC_UNATTACHED), \ + S(SRC_ATTACH_WAIT), \ + S(SRC_ATTACHED), \ + S(SRC_STARTUP), \ + S(SRC_SEND_CAPABILITIES), \ + S(SRC_NEGOTIATE_CAPABILITIES), \ + S(SRC_TRANSITION_SUPPLY), \ + S(SRC_READY), \ + S(SRC_WAIT_NEW_CAPABILITIES), \ + \ + S(SNK_UNATTACHED), \ + S(SNK_ATTACH_WAIT), \ + S(SNK_DEBOUNCED), \ + S(SNK_ATTACHED), \ + S(SNK_STARTUP), \ + S(SNK_DISCOVERY), \ + S(SNK_DISCOVERY_DEBOUNCE), \ + S(SNK_DISCOVERY_DEBOUNCE_DONE), \ + S(SNK_WAIT_CAPABILITIES), \ + S(SNK_NEGOTIATE_CAPABILITIES), \ + S(SNK_TRANSITION_SINK), \ + S(SNK_TRANSITION_SINK_VBUS), \ + S(SNK_READY), \ + \ + S(ACC_UNATTACHED), \ + S(DEBUG_ACC_ATTACHED), \ + S(AUDIO_ACC_ATTACHED), \ + S(AUDIO_ACC_DEBOUNCE), \ + \ + S(HARD_RESET_SEND), \ + S(HARD_RESET_START), \ + S(SRC_HARD_RESET_VBUS_OFF), \ + S(SRC_HARD_RESET_VBUS_ON), \ + S(SNK_HARD_RESET_SINK_OFF), \ + S(SNK_HARD_RESET_WAIT_VBUS), \ + S(SNK_HARD_RESET_SINK_ON), \ + \ + S(SOFT_RESET), \ + S(SOFT_RESET_SEND), \ + \ + S(DR_SWAP_ACCEPT), \ + S(DR_SWAP_SEND), \ + S(DR_SWAP_SEND_TIMEOUT), \ + S(DR_SWAP_CANCEL), \ + S(DR_SWAP_CHANGE_DR), \ + \ + S(PR_SWAP_ACCEPT), \ + S(PR_SWAP_SEND), \ + S(PR_SWAP_SEND_TIMEOUT), \ + S(PR_SWAP_CANCEL), \ + S(PR_SWAP_START), \ + S(PR_SWAP_SRC_SNK_TRANSITION_OFF), \ + S(PR_SWAP_SRC_SNK_SOURCE_OFF), \ + S(PR_SWAP_SRC_SNK_SINK_ON), \ + S(PR_SWAP_SNK_SRC_SINK_OFF), \ + S(PR_SWAP_SNK_SRC_SOURCE_ON), \ + \ + S(VCONN_SWAP_ACCEPT), \ + S(VCONN_SWAP_SEND), \ + S(VCONN_SWAP_SEND_TIMEOUT), \ + S(VCONN_SWAP_CANCEL), \ + S(VCONN_SWAP_START), \ + S(VCONN_SWAP_WAIT_FOR_VCONN), \ + S(VCONN_SWAP_TURN_ON_VCONN), \ + S(VCONN_SWAP_TURN_OFF_VCONN), \ + \ + S(SNK_TRY), \ + S(SNK_TRY_WAIT), \ + S(SRC_TRYWAIT), \ + S(SRC_TRYWAIT_UNATTACHED), \ + \ + S(SRC_TRY), \ + S(SRC_TRY_DEBOUNCE), \ + S(SNK_TRYWAIT), \ + S(SNK_TRYWAIT_DEBOUNCE), \ + S(SNK_TRYWAIT_VBUS), \ + S(BIST_RX), \ + \ + S(ERROR_RECOVERY), \ + S(ERROR_RECOVERY_WAIT_OFF) + +#define GENERATE_ENUM(e) e +#define GENERATE_STRING(s) #s + +enum tcpm_state { + FOREACH_STATE(GENERATE_ENUM) +}; + +static const char * const tcpm_states[] = { + FOREACH_STATE(GENERATE_STRING) +}; + +enum vdm_states { + VDM_STATE_ERR_BUSY = -3, + VDM_STATE_ERR_SEND = -2, + VDM_STATE_ERR_TMOUT = -1, + VDM_STATE_DONE = 0, + /* Anything >0 represents an active state */ + VDM_STATE_READY = 1, + VDM_STATE_BUSY = 2, + VDM_STATE_WAIT_RSP_BUSY = 3, +}; + +enum pd_msg_request { + PD_MSG_NONE = 0, + PD_MSG_CTRL_REJECT, + PD_MSG_CTRL_WAIT, + PD_MSG_DATA_SINK_CAP, + PD_MSG_DATA_SOURCE_CAP, +}; + +/* Events from low level driver */ + +#define TCPM_CC_EVENT BIT(0) +#define TCPM_VBUS_EVENT BIT(1) +#define TCPM_RESET_EVENT BIT(2) + +#define LOG_BUFFER_ENTRIES 1024 +#define LOG_BUFFER_ENTRY_SIZE 128 + +/* Alternate mode support */ + +#define SVID_DISCOVERY_MAX 16 + +struct pd_mode_data { + int svid_index; /* current SVID index */ + int nsvids; + u16 svids[SVID_DISCOVERY_MAX]; + int altmodes; /* number of alternate modes */ + struct typec_altmode_desc altmode_desc[SVID_DISCOVERY_MAX]; +}; + +struct tcpm_port { + struct device *dev; + + struct mutex lock; /* tcpm state machine lock */ + struct workqueue_struct *wq; + + struct typec_capability typec_caps; + struct typec_port *typec_port; + + struct tcpc_dev *tcpc; + + enum typec_role vconn_role; + enum typec_role pwr_role; + enum typec_data_role data_role; + enum typec_pwr_opmode pwr_opmode; + + struct usb_pd_identity partner_ident; + struct typec_partner_desc partner_desc; + struct typec_partner *partner; + + enum typec_cc_status cc_req; + + enum typec_cc_status cc1; + enum typec_cc_status cc2; + enum typec_cc_polarity polarity; + + bool attached; + bool connected; + bool vbus_present; + bool vbus_never_low; + bool vbus_source; + bool vbus_charge; + + bool send_discover; + bool op_vsafe5v; + + int try_role; + int try_snk_count; + int try_src_count; + + enum pd_msg_request queued_message; + + enum tcpm_state enter_state; + enum tcpm_state prev_state; + enum tcpm_state state; + enum tcpm_state delayed_state; + unsigned long delayed_runtime; + unsigned long delay_ms; + + spinlock_t pd_event_lock; + u32 pd_events; + + struct work_struct event_work; + struct delayed_work state_machine; + struct delayed_work vdm_state_machine; + bool state_machine_running; + + struct completion tx_complete; + enum tcpm_transmit_status tx_status; + + struct mutex swap_lock; /* swap command lock */ + bool swap_pending; + struct completion swap_complete; + int swap_status; + + unsigned int message_id; + unsigned int caps_count; + unsigned int hard_reset_count; + bool pd_capable; + bool explicit_contract; + + /* Partner capabilities/requests */ + u32 sink_request; + u32 source_caps[PDO_MAX_OBJECTS]; + unsigned int nr_source_caps; + u32 sink_caps[PDO_MAX_OBJECTS]; + unsigned int nr_sink_caps; + + /* Local capabilities */ + u32 src_pdo[PDO_MAX_OBJECTS]; + unsigned int nr_src_pdo; + u32 snk_pdo[PDO_MAX_OBJECTS]; + unsigned int nr_snk_pdo; + + unsigned int max_snk_mv; + unsigned int max_snk_ma; + unsigned int max_snk_mw; + unsigned int operating_snk_mw; + + /* Requested current / voltage */ + u32 current_limit; + u32 supply_voltage; + + u32 bist_request; + + /* PD state for Vendor Defined Messages */ + enum vdm_states vdm_state; + u32 vdm_retries; + /* next Vendor Defined Message to send */ + u32 vdo_data[VDO_MAX_SIZE]; + u8 vdo_count; + /* VDO to retry if UFP responder replied busy */ + u32 vdo_retry; + + /* Alternate mode data */ + + struct pd_mode_data mode_data; + struct typec_altmode *partner_altmode[SVID_DISCOVERY_MAX]; + struct typec_altmode *port_altmode[SVID_DISCOVERY_MAX]; + +#ifdef CONFIG_DEBUG_FS + struct dentry *dentry; + struct mutex logbuffer_lock; /* log buffer access lock */ + int logbuffer_head; + int logbuffer_tail; + u8 *logbuffer[LOG_BUFFER_ENTRIES]; +#endif +}; + +struct pd_rx_event { + struct work_struct work; + struct tcpm_port *port; + struct pd_message msg; +}; + +#define tcpm_cc_is_sink(cc) \ + ((cc) == TYPEC_CC_RP_DEF || (cc) == TYPEC_CC_RP_1_5 || \ + (cc) == TYPEC_CC_RP_3_0) + +#define tcpm_port_is_sink(port) \ + ((tcpm_cc_is_sink((port)->cc1) && !tcpm_cc_is_sink((port)->cc2)) || \ + (tcpm_cc_is_sink((port)->cc2) && !tcpm_cc_is_sink((port)->cc1))) + +#define tcpm_cc_is_source(cc) ((cc) == TYPEC_CC_RD) +#define tcpm_cc_is_audio(cc) ((cc) == TYPEC_CC_RA) +#define tcpm_cc_is_open(cc) ((cc) == TYPEC_CC_OPEN) + +#define tcpm_port_is_source(port) \ + ((tcpm_cc_is_source((port)->cc1) && \ + !tcpm_cc_is_source((port)->cc2)) || \ + (tcpm_cc_is_source((port)->cc2) && \ + !tcpm_cc_is_source((port)->cc1))) + +#define tcpm_port_is_debug(port) \ + (tcpm_cc_is_source((port)->cc1) && tcpm_cc_is_source((port)->cc2)) + +#define tcpm_port_is_audio(port) \ + (tcpm_cc_is_audio((port)->cc1) && tcpm_cc_is_audio((port)->cc2)) + +#define tcpm_port_is_audio_detached(port) \ + ((tcpm_cc_is_audio((port)->cc1) && tcpm_cc_is_open((port)->cc2)) || \ + (tcpm_cc_is_audio((port)->cc2) && tcpm_cc_is_open((port)->cc1))) + +#define tcpm_try_snk(port) \ + ((port)->try_snk_count == 0 && (port)->try_role == TYPEC_SINK) + +#define tcpm_try_src(port) \ + ((port)->try_src_count == 0 && (port)->try_role == TYPEC_SOURCE) + +static enum tcpm_state tcpm_default_state(struct tcpm_port *port) +{ + if (port->try_role == TYPEC_SINK) + return SNK_UNATTACHED; + else if (port->try_role == TYPEC_SOURCE) + return SRC_UNATTACHED; + else if (port->tcpc->config->default_role == TYPEC_SINK) + return SNK_UNATTACHED; + return SRC_UNATTACHED; +} + +static inline +struct tcpm_port *typec_cap_to_tcpm(const struct typec_capability *cap) +{ + return container_of(cap, struct tcpm_port, typec_caps); +} + +static bool tcpm_port_is_disconnected(struct tcpm_port *port) +{ + return (!port->attached && port->cc1 == TYPEC_CC_OPEN && + port->cc2 == TYPEC_CC_OPEN) || + (port->attached && ((port->polarity == TYPEC_POLARITY_CC1 && + port->cc1 == TYPEC_CC_OPEN) || + (port->polarity == TYPEC_POLARITY_CC2 && + port->cc2 == TYPEC_CC_OPEN))); +} + +/* + * Logging + */ + +#ifdef CONFIG_DEBUG_FS + +static bool tcpm_log_full(struct tcpm_port *port) +{ + return port->logbuffer_tail == + (port->logbuffer_head + 1) % LOG_BUFFER_ENTRIES; +} + +static void _tcpm_log(struct tcpm_port *port, const char *fmt, va_list args) +{ + char tmpbuffer[LOG_BUFFER_ENTRY_SIZE]; + u64 ts_nsec = local_clock(); + unsigned long rem_nsec; + + if (!port->logbuffer[port->logbuffer_head]) { + port->logbuffer[port->logbuffer_head] = + kzalloc(LOG_BUFFER_ENTRY_SIZE, GFP_KERNEL); + if (!port->logbuffer[port->logbuffer_head]) + return; + } + + vsnprintf(tmpbuffer, sizeof(tmpbuffer), fmt, args); + + mutex_lock(&port->logbuffer_lock); + + if (tcpm_log_full(port)) { + port->logbuffer_head = max(port->logbuffer_head - 1, 0); + strcpy(tmpbuffer, "overflow"); + } + + if (port->logbuffer_head < 0 || + port->logbuffer_head >= LOG_BUFFER_ENTRIES) { + dev_warn(port->dev, + "Bad log buffer index %d\n", port->logbuffer_head); + goto abort; + } + + if (!port->logbuffer[port->logbuffer_head]) { + dev_warn(port->dev, + "Log buffer index %d is NULL\n", port->logbuffer_head); + goto abort; + } + + rem_nsec = do_div(ts_nsec, 1000000000); + scnprintf(port->logbuffer[port->logbuffer_head], + LOG_BUFFER_ENTRY_SIZE, "[%5lu.%06lu] %s", + (unsigned long)ts_nsec, rem_nsec / 1000, + tmpbuffer); + port->logbuffer_head = (port->logbuffer_head + 1) % LOG_BUFFER_ENTRIES; + +abort: + mutex_unlock(&port->logbuffer_lock); +} + +static void tcpm_log(struct tcpm_port *port, const char *fmt, ...) +{ + va_list args; + + /* Do not log while disconnected and unattached */ + if (tcpm_port_is_disconnected(port) && + (port->state == SRC_UNATTACHED || port->state == SNK_UNATTACHED || + port->state == DRP_TOGGLING)) + return; + + va_start(args, fmt); + _tcpm_log(port, fmt, args); + va_end(args); +} + +static void tcpm_log_force(struct tcpm_port *port, const char *fmt, ...) +{ + va_list args; + + va_start(args, fmt); + _tcpm_log(port, fmt, args); + va_end(args); +} + +static void tcpm_log_source_caps(struct tcpm_port *port) +{ + int i; + + for (i = 0; i < port->nr_source_caps; i++) { + u32 pdo = port->source_caps[i]; + enum pd_pdo_type type = pdo_type(pdo); + char msg[64]; + + switch (type) { + case PDO_TYPE_FIXED: + scnprintf(msg, sizeof(msg), + "%u mV, %u mA [%s%s%s%s%s%s]", + pdo_fixed_voltage(pdo), + pdo_max_current(pdo), + (pdo & PDO_FIXED_DUAL_ROLE) ? + "R" : "", + (pdo & PDO_FIXED_SUSPEND) ? + "S" : "", + (pdo & PDO_FIXED_HIGHER_CAP) ? + "H" : "", + (pdo & PDO_FIXED_USB_COMM) ? + "U" : "", + (pdo & PDO_FIXED_DATA_SWAP) ? + "D" : "", + (pdo & PDO_FIXED_EXTPOWER) ? + "E" : ""); + break; + case PDO_TYPE_VAR: + scnprintf(msg, sizeof(msg), + "%u-%u mV, %u mA", + pdo_min_voltage(pdo), + pdo_max_voltage(pdo), + pdo_max_current(pdo)); + break; + case PDO_TYPE_BATT: + scnprintf(msg, sizeof(msg), + "%u-%u mV, %u mW", + pdo_min_voltage(pdo), + pdo_max_voltage(pdo), + pdo_max_power(pdo)); + break; + default: + strcpy(msg, "undefined"); + break; + } + tcpm_log(port, " PDO %d: type %d, %s", + i, type, msg); + } +} + +static int tcpm_seq_show(struct seq_file *s, void *v) +{ + struct tcpm_port *port = (struct tcpm_port *)s->private; + int tail; + + mutex_lock(&port->logbuffer_lock); + tail = port->logbuffer_tail; + while (tail != port->logbuffer_head) { + seq_printf(s, "%s\n", port->logbuffer[tail]); + tail = (tail + 1) % LOG_BUFFER_ENTRIES; + } + if (!seq_has_overflowed(s)) + port->logbuffer_tail = tail; + mutex_unlock(&port->logbuffer_lock); + + return 0; +} + +static int tcpm_debug_open(struct inode *inode, struct file *file) +{ + return single_open(file, tcpm_seq_show, inode->i_private); +} + +static const struct file_operations tcpm_debug_operations = { + .open = tcpm_debug_open, + .llseek = seq_lseek, + .read = seq_read, + .release = single_release, +}; + +static struct dentry *rootdir; + +static int tcpm_debugfs_init(struct tcpm_port *port) +{ + mutex_init(&port->logbuffer_lock); + /* /sys/kernel/debug/tcpm/usbcX */ + if (!rootdir) { + rootdir = debugfs_create_dir("tcpm", NULL); + if (!rootdir) + return -ENOMEM; + } + + port->dentry = debugfs_create_file(dev_name(port->dev), + S_IFREG | 0444, rootdir, + port, &tcpm_debug_operations); + + return 0; +} + +static void tcpm_debugfs_exit(struct tcpm_port *port) +{ + debugfs_remove(port->dentry); +} + +#else + +static void tcpm_log(const struct tcpm_port *port, const char *fmt, ...) { } +static void tcpm_log_force(struct tcpm_port *port, const char *fmt, ...) { } +static void tcpm_log_source_caps(struct tcpm_port *port) { } +static int tcpm_debugfs_init(const struct tcpm_port *port) { return 0; } +static void tcpm_debugfs_exit(const struct tcpm_port *port) { } + +#endif + +static int tcpm_pd_transmit(struct tcpm_port *port, + enum tcpm_transmit_type type, + const struct pd_message *msg) +{ + unsigned long timeout; + int ret; + + if (msg) + tcpm_log(port, "PD TX, header: %#x", le16_to_cpu(msg->header)); + else + tcpm_log(port, "PD TX, type: %#x", type); + + reinit_completion(&port->tx_complete); + ret = port->tcpc->pd_transmit(port->tcpc, type, msg); + if (ret < 0) + return ret; + + mutex_unlock(&port->lock); + timeout = wait_for_completion_timeout(&port->tx_complete, + msecs_to_jiffies(PD_T_TCPC_TX_TIMEOUT)); + mutex_lock(&port->lock); + if (!timeout) + return -ETIMEDOUT; + + switch (port->tx_status) { + case TCPC_TX_SUCCESS: + port->message_id = (port->message_id + 1) & PD_HEADER_ID_MASK; + return 0; + case TCPC_TX_DISCARDED: + return -EAGAIN; + case TCPC_TX_FAILED: + default: + return -EIO; + } +} + +void tcpm_pd_transmit_complete(struct tcpm_port *port, + enum tcpm_transmit_status status) +{ + tcpm_log(port, "PD TX complete, status: %u", status); + port->tx_status = status; + complete(&port->tx_complete); +} +EXPORT_SYMBOL_GPL(tcpm_pd_transmit_complete); + +static int tcpm_mux_set(struct tcpm_port *port, enum tcpc_mux_mode mode, + enum tcpc_usb_switch config) +{ + int ret = 0; + + tcpm_log(port, "Requesting mux mode %d, config %d, polarity %d", + mode, config, port->polarity); + + if (port->tcpc->mux) + ret = port->tcpc->mux->set(port->tcpc->mux, mode, config, + port->polarity); + + return ret; +} + +static int tcpm_set_polarity(struct tcpm_port *port, + enum typec_cc_polarity polarity) +{ + int ret; + + tcpm_log(port, "polarity %d", polarity); + + ret = port->tcpc->set_polarity(port->tcpc, polarity); + if (ret < 0) + return ret; + + port->polarity = polarity; + + return 0; +} + +static int tcpm_set_vconn(struct tcpm_port *port, bool enable) +{ + int ret; + + tcpm_log(port, "vconn:=%d", enable); + + ret = port->tcpc->set_vconn(port->tcpc, enable); + if (!ret) { + port->vconn_role = enable ? TYPEC_SOURCE : TYPEC_SINK; + typec_set_vconn_role(port->typec_port, port->vconn_role); + } + + return ret; +} + +static u32 tcpm_get_current_limit(struct tcpm_port *port) +{ + enum typec_cc_status cc; + u32 limit; + + cc = port->polarity ? port->cc2 : port->cc1; + switch (cc) { + case TYPEC_CC_RP_1_5: + limit = 1500; + break; + case TYPEC_CC_RP_3_0: + limit = 3000; + break; + case TYPEC_CC_RP_DEF: + default: + limit = 0; + break; + } + + return limit; +} + +static int tcpm_set_current_limit(struct tcpm_port *port, u32 max_ma, u32 mv) +{ + int ret = -EOPNOTSUPP; + + tcpm_log(port, "Setting voltage/current limit %u mV %u mA", mv, max_ma); + + if (port->tcpc->set_current_limit) + ret = port->tcpc->set_current_limit(port->tcpc, max_ma, mv); + + return ret; +} + +/* + * Determine RP value to set based on maximum current supported + * by a port if configured as source. + * Returns CC value to report to link partner. + */ +static enum typec_cc_status tcpm_rp_cc(struct tcpm_port *port) +{ + const u32 *src_pdo = port->src_pdo; + int nr_pdo = port->nr_src_pdo; + int i; + + /* + * Search for first entry with matching voltage. + * It should report the maximum supported current. + */ + for (i = 0; i < nr_pdo; i++) { + const u32 pdo = src_pdo[i]; + + if (pdo_type(pdo) == PDO_TYPE_FIXED && + pdo_fixed_voltage(pdo) == 5000) { + unsigned int curr = pdo_max_current(pdo); + + if (curr >= 3000) + return TYPEC_CC_RP_3_0; + else if (curr >= 1500) + return TYPEC_CC_RP_1_5; + return TYPEC_CC_RP_DEF; + } + } + + return TYPEC_CC_RP_DEF; +} + +static int tcpm_set_attached_state(struct tcpm_port *port, bool attached) +{ + return port->tcpc->set_roles(port->tcpc, attached, port->pwr_role, + port->data_role); +} + +static int tcpm_set_roles(struct tcpm_port *port, bool attached, + enum typec_role role, enum typec_data_role data) +{ + int ret; + + if (data == TYPEC_HOST) + ret = tcpm_mux_set(port, TYPEC_MUX_USB, + TCPC_USB_SWITCH_CONNECT); + else + ret = tcpm_mux_set(port, TYPEC_MUX_NONE, + TCPC_USB_SWITCH_DISCONNECT); + if (ret < 0) + return ret; + + ret = port->tcpc->set_roles(port->tcpc, attached, role, data); + if (ret < 0) + return ret; + + port->pwr_role = role; + port->data_role = data; + typec_set_data_role(port->typec_port, data); + typec_set_pwr_role(port->typec_port, role); + + return 0; +} + +static int tcpm_set_pwr_role(struct tcpm_port *port, enum typec_role role) +{ + int ret; + + ret = port->tcpc->set_roles(port->tcpc, true, role, + port->data_role); + if (ret < 0) + return ret; + + port->pwr_role = role; + typec_set_pwr_role(port->typec_port, role); + + return 0; +} + +static int tcpm_pd_send_source_caps(struct tcpm_port *port) +{ + struct pd_message msg; + int i; + + memset(&msg, 0, sizeof(msg)); + if (!port->nr_src_pdo) { + /* No source capabilities defined, sink only */ + msg.header = PD_HEADER_LE(PD_CTRL_REJECT, + port->pwr_role, + port->data_role, + port->message_id, 0); + } else { + msg.header = PD_HEADER_LE(PD_DATA_SOURCE_CAP, + port->pwr_role, + port->data_role, + port->message_id, + port->nr_src_pdo); + } + for (i = 0; i < port->nr_src_pdo; i++) + msg.payload[i] = cpu_to_le32(port->src_pdo[i]); + + return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg); +} + +static int tcpm_pd_send_sink_caps(struct tcpm_port *port) +{ + struct pd_message msg; + int i; + + memset(&msg, 0, sizeof(msg)); + if (!port->nr_snk_pdo) { + /* No sink capabilities defined, source only */ + msg.header = PD_HEADER_LE(PD_CTRL_REJECT, + port->pwr_role, + port->data_role, + port->message_id, 0); + } else { + msg.header = PD_HEADER_LE(PD_DATA_SINK_CAP, + port->pwr_role, + port->data_role, + port->message_id, + port->nr_snk_pdo); + } + for (i = 0; i < port->nr_snk_pdo; i++) + msg.payload[i] = cpu_to_le32(port->snk_pdo[i]); + + return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg); +} + +static void tcpm_set_state(struct tcpm_port *port, enum tcpm_state state, + unsigned int delay_ms) +{ + if (delay_ms) { + tcpm_log(port, "pending state change %s -> %s @ %u ms", + tcpm_states[port->state], tcpm_states[state], + delay_ms); + port->delayed_state = state; + mod_delayed_work(port->wq, &port->state_machine, + msecs_to_jiffies(delay_ms)); + port->delayed_runtime = jiffies + msecs_to_jiffies(delay_ms); + port->delay_ms = delay_ms; + } else { + tcpm_log(port, "state change %s -> %s", + tcpm_states[port->state], tcpm_states[state]); + port->delayed_state = INVALID_STATE; + port->prev_state = port->state; + port->state = state; + /* + * Don't re-queue the state machine work item if we're currently + * in the state machine and we're immediately changing states. + * tcpm_state_machine_work() will continue running the state + * machine. + */ + if (!port->state_machine_running) + mod_delayed_work(port->wq, &port->state_machine, 0); + } +} + +static void tcpm_set_state_cond(struct tcpm_port *port, enum tcpm_state state, + unsigned int delay_ms) +{ + if (port->enter_state == port->state) + tcpm_set_state(port, state, delay_ms); + else + tcpm_log(port, + "skipped %sstate change %s -> %s [%u ms], context state %s", + delay_ms ? "delayed " : "", + tcpm_states[port->state], tcpm_states[state], + delay_ms, tcpm_states[port->enter_state]); +} + +static void tcpm_queue_message(struct tcpm_port *port, + enum pd_msg_request message) +{ + port->queued_message = message; + mod_delayed_work(port->wq, &port->state_machine, 0); +} + +/* + * VDM/VDO handling functions + */ +static void tcpm_queue_vdm(struct tcpm_port *port, const u32 header, + const u32 *data, int cnt) +{ + port->vdo_count = cnt + 1; + port->vdo_data[0] = header; + memcpy(&port->vdo_data[1], data, sizeof(u32) * cnt); + /* Set ready, vdm state machine will actually send */ + port->vdm_retries = 0; + port->vdm_state = VDM_STATE_READY; +} + +static void svdm_consume_identity(struct tcpm_port *port, const __le32 *payload, + int cnt) +{ + u32 vdo = le32_to_cpu(payload[VDO_INDEX_IDH]); + u32 product = le32_to_cpu(payload[VDO_INDEX_PRODUCT]); + + memset(&port->mode_data, 0, sizeof(port->mode_data)); + +#if 0 /* Not really a match */ + switch (PD_IDH_PTYPE(vdo)) { + case IDH_PTYPE_UNDEF: + port->partner.type = TYPEC_PARTNER_NONE; /* no longer exists */ + break; + case IDH_PTYPE_HUB: + break; + case IDH_PTYPE_PERIPH: + break; + case IDH_PTYPE_PCABLE: + break; + case IDH_PTYPE_ACABLE: + break; + case IDH_PTYPE_AMA: + port->partner.type = TYPEC_PARTNER_ALTMODE; + break; + default: + break; + } +#endif + + port->partner_ident.id_header = vdo; + port->partner_ident.cert_stat = le32_to_cpu(payload[VDO_INDEX_CSTAT]); + port->partner_ident.product = product; + + typec_partner_set_identity(port->partner); + + tcpm_log(port, "Identity: %04x:%04x.%04x", + PD_IDH_VID(vdo), + PD_PRODUCT_PID(product), product & 0xffff); +} + +static bool svdm_consume_svids(struct tcpm_port *port, const __le32 *payload, + int cnt) +{ + struct pd_mode_data *pmdata = &port->mode_data; + int i; + + for (i = 1; i < cnt; i++) { + u32 p = le32_to_cpu(payload[i]); + u16 svid; + + svid = (p >> 16) & 0xffff; + if (!svid) + return false; + + if (pmdata->nsvids >= SVID_DISCOVERY_MAX) + goto abort; + + pmdata->svids[pmdata->nsvids++] = svid; + tcpm_log(port, "SVID %d: 0x%x", pmdata->nsvids, svid); + + svid = p & 0xffff; + if (!svid) + return false; + + if (pmdata->nsvids >= SVID_DISCOVERY_MAX) + goto abort; + + pmdata->svids[pmdata->nsvids++] = svid; + tcpm_log(port, "SVID %d: 0x%x", pmdata->nsvids, svid); + } + return true; +abort: + tcpm_log(port, "SVID_DISCOVERY_MAX(%d) too low!", SVID_DISCOVERY_MAX); + return false; +} + +static void svdm_consume_modes(struct tcpm_port *port, const __le32 *payload, + int cnt) +{ + struct pd_mode_data *pmdata = &port->mode_data; + struct typec_altmode_desc *paltmode; + struct typec_mode_desc *pmode; + int i; + + if (pmdata->altmodes >= ARRAY_SIZE(port->partner_altmode)) { + /* Already logged in svdm_consume_svids() */ + return; + } + + paltmode = &pmdata->altmode_desc[pmdata->altmodes]; + memset(paltmode, 0, sizeof(*paltmode)); + + paltmode->svid = pmdata->svids[pmdata->svid_index]; + + tcpm_log(port, " Alternate mode %d: SVID 0x%04x", + pmdata->altmodes, paltmode->svid); + + for (i = 1; i < cnt && paltmode->n_modes < ALTMODE_MAX_MODES; i++) { + pmode = &paltmode->modes[paltmode->n_modes]; + memset(pmode, 0, sizeof(*pmode)); + pmode->vdo = le32_to_cpu(payload[i]); + pmode->index = i - 1; + paltmode->n_modes++; + tcpm_log(port, " VDO %d: 0x%08x", + pmode->index, pmode->vdo); + } + port->partner_altmode[pmdata->altmodes] = + typec_partner_register_altmode(port->partner, paltmode); + if (port->partner_altmode[pmdata->altmodes] == NULL) { + tcpm_log(port, + "Failed to register alternate modes for SVID 0x%04x", + paltmode->svid); + return; + } + pmdata->altmodes++; +} + +#define supports_modal(port) PD_IDH_MODAL_SUPP((port)->partner_ident.id_header) + +static int tcpm_pd_svdm(struct tcpm_port *port, const __le32 *payload, int cnt, + u32 *response) +{ + u32 p0 = le32_to_cpu(payload[0]); + int cmd_type = PD_VDO_CMDT(p0); + int cmd = PD_VDO_CMD(p0); + struct pd_mode_data *modep; + int rlen = 0; + u16 svid; + + tcpm_log(port, "Rx VDM cmd 0x%x type %d cmd %d len %d", + p0, cmd_type, cmd, cnt); + + modep = &port->mode_data; + + switch (cmd_type) { + case CMDT_INIT: + switch (cmd) { + case CMD_DISCOVER_IDENT: + break; + case CMD_DISCOVER_SVID: + break; + case CMD_DISCOVER_MODES: + break; + case CMD_ENTER_MODE: + break; + case CMD_EXIT_MODE: + break; + case CMD_ATTENTION: + break; + default: + break; + } + if (rlen >= 1) { + response[0] = p0 | VDO_CMDT(CMDT_RSP_ACK); + } else if (rlen == 0) { + response[0] = p0 | VDO_CMDT(CMDT_RSP_NAK); + rlen = 1; + } else { + response[0] = p0 | VDO_CMDT(CMDT_RSP_BUSY); + rlen = 1; + } + break; + case CMDT_RSP_ACK: + /* silently drop message if we are not connected */ + if (!port->partner) + break; + + switch (cmd) { + case CMD_DISCOVER_IDENT: + /* 6.4.4.3.1 */ + svdm_consume_identity(port, payload, cnt); + response[0] = VDO(USB_SID_PD, 1, CMD_DISCOVER_SVID); + rlen = 1; + break; + case CMD_DISCOVER_SVID: + /* 6.4.4.3.2 */ + if (svdm_consume_svids(port, payload, cnt)) { + response[0] = VDO(USB_SID_PD, 1, + CMD_DISCOVER_SVID); + rlen = 1; + } else if (modep->nsvids && supports_modal(port)) { + response[0] = VDO(modep->svids[0], 1, + CMD_DISCOVER_MODES); + rlen = 1; + } + break; + case CMD_DISCOVER_MODES: + /* 6.4.4.3.3 */ + svdm_consume_modes(port, payload, cnt); + modep->svid_index++; + if (modep->svid_index < modep->nsvids) { + svid = modep->svids[modep->svid_index]; + response[0] = VDO(svid, 1, CMD_DISCOVER_MODES); + rlen = 1; + } else { +#if 0 + response[0] = pd_dfp_enter_mode(port, 0, 0); + if (response[0]) + rlen = 1; +#endif + } + break; + case CMD_ENTER_MODE: + break; + default: + break; + } + break; + default: + break; + } + + return rlen; +} + +static void tcpm_handle_vdm_request(struct tcpm_port *port, + const __le32 *payload, int cnt) +{ + int rlen = 0; + u32 response[8] = { }; + u32 p0 = le32_to_cpu(payload[0]); + + if (port->vdm_state == VDM_STATE_BUSY) { + /* If UFP responded busy retry after timeout */ + if (PD_VDO_CMDT(p0) == CMDT_RSP_BUSY) { + port->vdm_state = VDM_STATE_WAIT_RSP_BUSY; + port->vdo_retry = (p0 & ~VDO_CMDT_MASK) | + CMDT_INIT; + mod_delayed_work(port->wq, &port->vdm_state_machine, + msecs_to_jiffies(PD_T_VDM_BUSY)); + return; + } + port->vdm_state = VDM_STATE_DONE; + } + + if (PD_VDO_SVDM(p0)) + rlen = tcpm_pd_svdm(port, payload, cnt, response); +#if 0 + else + rlen = tcpm_pd_custom_vdm(port, cnt, payload, response); +#endif + + if (rlen > 0) { + tcpm_queue_vdm(port, response[0], &response[1], rlen - 1); + mod_delayed_work(port->wq, &port->vdm_state_machine, 0); + } +} + +static void tcpm_send_vdm(struct tcpm_port *port, u32 vid, int cmd, + const u32 *data, int count) +{ + u32 header; + + if (WARN_ON(count > VDO_MAX_SIZE - 1)) + count = VDO_MAX_SIZE - 1; + + /* set VDM header with VID & CMD */ + header = VDO(vid, ((vid & USB_SID_PD) == USB_SID_PD) ? + 1 : (PD_VDO_CMD(cmd) <= CMD_ATTENTION), cmd); + tcpm_queue_vdm(port, header, data, count); + + mod_delayed_work(port->wq, &port->vdm_state_machine, 0); +} + +static unsigned int vdm_ready_timeout(u32 vdm_hdr) +{ + unsigned int timeout; + int cmd = PD_VDO_CMD(vdm_hdr); + + /* its not a structured VDM command */ + if (!PD_VDO_SVDM(vdm_hdr)) + return PD_T_VDM_UNSTRUCTURED; + + switch (PD_VDO_CMDT(vdm_hdr)) { + case CMDT_INIT: + if (cmd == CMD_ENTER_MODE || cmd == CMD_EXIT_MODE) + timeout = PD_T_VDM_WAIT_MODE_E; + else + timeout = PD_T_VDM_SNDR_RSP; + break; + default: + if (cmd == CMD_ENTER_MODE || cmd == CMD_EXIT_MODE) + timeout = PD_T_VDM_E_MODE; + else + timeout = PD_T_VDM_RCVR_RSP; + break; + } + return timeout; +} + +static void vdm_run_state_machine(struct tcpm_port *port) +{ + struct pd_message msg; + int i, res; + + switch (port->vdm_state) { + case VDM_STATE_READY: + /* Only transmit VDM if attached */ + if (!port->attached) { + port->vdm_state = VDM_STATE_ERR_BUSY; + break; + } + + /* + * if there's traffic or we're not in PDO ready state don't send + * a VDM. + */ + if (port->state != SRC_READY && port->state != SNK_READY) + break; + + /* Prepare and send VDM */ + memset(&msg, 0, sizeof(msg)); + msg.header = PD_HEADER_LE(PD_DATA_VENDOR_DEF, + port->pwr_role, + port->data_role, + port->message_id, port->vdo_count); + for (i = 0; i < port->vdo_count; i++) + msg.payload[i] = cpu_to_le32(port->vdo_data[i]); + res = tcpm_pd_transmit(port, TCPC_TX_SOP, &msg); + if (res < 0) { + port->vdm_state = VDM_STATE_ERR_SEND; + } else { + unsigned long timeout; + + port->vdm_retries = 0; + port->vdm_state = VDM_STATE_BUSY; + timeout = vdm_ready_timeout(port->vdo_data[0]); + mod_delayed_work(port->wq, &port->vdm_state_machine, + timeout); + } + break; + case VDM_STATE_WAIT_RSP_BUSY: + port->vdo_data[0] = port->vdo_retry; + port->vdo_count = 1; + port->vdm_state = VDM_STATE_READY; + break; + case VDM_STATE_BUSY: + port->vdm_state = VDM_STATE_ERR_TMOUT; + break; + case VDM_STATE_ERR_SEND: + /* + * A partner which does not support USB PD will not reply, + * so this is not a fatal error. At the same time, some + * devices may not return GoodCRC under some circumstances, + * so we need to retry. + */ + if (port->vdm_retries < 3) { + tcpm_log(port, "VDM Tx error, retry"); + port->vdm_retries++; + port->vdm_state = VDM_STATE_READY; + } + break; + default: + break; + } +} + +static void vdm_state_machine_work(struct work_struct *work) +{ + struct tcpm_port *port = container_of(work, struct tcpm_port, + vdm_state_machine.work); + enum vdm_states prev_state; + + mutex_lock(&port->lock); + + /* + * Continue running as long as the port is not busy and there was + * a state change. + */ + do { + prev_state = port->vdm_state; + vdm_run_state_machine(port); + } while (port->vdm_state != prev_state && + port->vdm_state != VDM_STATE_BUSY); + + mutex_unlock(&port->lock); +} + +/* + * PD (data, control) command handling functions + */ +static void tcpm_pd_data_request(struct tcpm_port *port, + const struct pd_message *msg) +{ + enum pd_data_msg_type type = pd_header_type_le(msg->header); + unsigned int cnt = pd_header_cnt_le(msg->header); + unsigned int i; + + switch (type) { + case PD_DATA_SOURCE_CAP: + if (port->pwr_role != TYPEC_SINK) + break; + + for (i = 0; i < cnt; i++) + port->source_caps[i] = le32_to_cpu(msg->payload[i]); + + port->nr_source_caps = cnt; + + tcpm_log_source_caps(port); + + /* + * This message may be received even if VBUS is not + * present. This is quite unexpected; see USB PD + * specification, sections 8.3.3.6.3.1 and 8.3.3.6.3.2. + * However, at the same time, we must be ready to + * receive this message and respond to it 15ms after + * receiving PS_RDY during power swap operations, no matter + * if VBUS is available or not (USB PD specification, + * section 6.5.9.2). + * So we need to accept the message either way, + * but be prepared to keep waiting for VBUS after it was + * handled. + */ + tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0); + break; + case PD_DATA_REQUEST: + if (port->pwr_role != TYPEC_SOURCE || + cnt != 1) { + tcpm_queue_message(port, PD_MSG_CTRL_REJECT); + break; + } + port->sink_request = le32_to_cpu(msg->payload[0]); + tcpm_set_state(port, SRC_NEGOTIATE_CAPABILITIES, 0); + break; + case PD_DATA_SINK_CAP: + /* We don't do anything with this at the moment... */ + for (i = 0; i < cnt; i++) + port->sink_caps[i] = le32_to_cpu(msg->payload[i]); + port->nr_sink_caps = cnt; + break; + case PD_DATA_VENDOR_DEF: + tcpm_handle_vdm_request(port, msg->payload, cnt); + break; + case PD_DATA_BIST: + if (port->state == SRC_READY || port->state == SNK_READY) { + port->bist_request = le32_to_cpu(msg->payload[0]); + tcpm_set_state(port, BIST_RX, 0); + } + break; + default: + tcpm_log(port, "Unhandled data message type %#x", type); + break; + } +} + +static void tcpm_pd_ctrl_request(struct tcpm_port *port, + const struct pd_message *msg) +{ + enum pd_ctrl_msg_type type = pd_header_type_le(msg->header); + enum tcpm_state next_state; + + switch (type) { + case PD_CTRL_GOOD_CRC: + case PD_CTRL_PING: + break; + case PD_CTRL_GET_SOURCE_CAP: + switch (port->state) { + case SRC_READY: + case SNK_READY: + tcpm_queue_message(port, PD_MSG_DATA_SOURCE_CAP); + break; + default: + tcpm_queue_message(port, PD_MSG_CTRL_REJECT); + break; + } + break; + case PD_CTRL_GET_SINK_CAP: + switch (port->state) { + case SRC_READY: + case SNK_READY: + tcpm_queue_message(port, PD_MSG_DATA_SINK_CAP); + break; + default: + tcpm_queue_message(port, PD_MSG_CTRL_REJECT); + break; + } + break; + case PD_CTRL_GOTO_MIN: + break; + case PD_CTRL_PS_RDY: + switch (port->state) { + case SNK_TRANSITION_SINK: + if (port->vbus_present) { + tcpm_set_current_limit(port, + port->current_limit, + port->supply_voltage); + tcpm_set_state(port, SNK_READY, 0); + } else { + /* + * Seen after power swap. Keep waiting for VBUS + * in a transitional state. + */ + tcpm_set_state(port, + SNK_TRANSITION_SINK_VBUS, 0); + } + break; + case PR_SWAP_SRC_SNK_SOURCE_OFF: + tcpm_set_state(port, PR_SWAP_SRC_SNK_SINK_ON, 0); + break; + case PR_SWAP_SNK_SRC_SINK_OFF: + tcpm_set_state(port, PR_SWAP_SNK_SRC_SOURCE_ON, 0); + break; + case VCONN_SWAP_WAIT_FOR_VCONN: + tcpm_set_state(port, VCONN_SWAP_TURN_OFF_VCONN, 0); + break; + default: + break; + } + break; + case PD_CTRL_REJECT: + case PD_CTRL_WAIT: + switch (port->state) { + case SNK_NEGOTIATE_CAPABILITIES: + /* USB PD specification, Figure 8-43 */ + if (port->explicit_contract) + next_state = SNK_READY; + else + next_state = SNK_WAIT_CAPABILITIES; + tcpm_set_state(port, next_state, 0); + break; + case DR_SWAP_SEND: + port->swap_status = (type == PD_CTRL_WAIT ? + -EAGAIN : -EOPNOTSUPP); + tcpm_set_state(port, DR_SWAP_CANCEL, 0); + break; + case PR_SWAP_SEND: + port->swap_status = (type == PD_CTRL_WAIT ? + -EAGAIN : -EOPNOTSUPP); + tcpm_set_state(port, PR_SWAP_CANCEL, 0); + break; + case VCONN_SWAP_SEND: + port->swap_status = (type == PD_CTRL_WAIT ? + -EAGAIN : -EOPNOTSUPP); + tcpm_set_state(port, VCONN_SWAP_CANCEL, 0); + break; + default: + break; + } + break; + case PD_CTRL_ACCEPT: + switch (port->state) { + case SNK_NEGOTIATE_CAPABILITIES: + tcpm_set_state(port, SNK_TRANSITION_SINK, 0); + break; + case SOFT_RESET_SEND: + port->message_id = 0; + if (port->pwr_role == TYPEC_SOURCE) + next_state = SRC_SEND_CAPABILITIES; + else + next_state = SNK_WAIT_CAPABILITIES; + tcpm_set_state(port, next_state, 0); + break; + case DR_SWAP_SEND: + tcpm_set_state(port, DR_SWAP_CHANGE_DR, 0); + break; + case PR_SWAP_SEND: + tcpm_set_state(port, PR_SWAP_START, 0); + break; + case VCONN_SWAP_SEND: + tcpm_set_state(port, VCONN_SWAP_START, 0); + break; + default: + break; + } + break; + case PD_CTRL_SOFT_RESET: + tcpm_set_state(port, SOFT_RESET, 0); + break; + case PD_CTRL_DR_SWAP: + if (port->typec_caps.type != TYPEC_PORT_DRP) { + tcpm_queue_message(port, PD_MSG_CTRL_REJECT); + break; + } + /* + * XXX + * 6.3.9: If an alternate mode is active, a request to swap + * alternate modes shall trigger a port reset. + */ + switch (port->state) { + case SRC_READY: + case SNK_READY: + tcpm_set_state(port, DR_SWAP_ACCEPT, 0); + break; + default: + tcpm_queue_message(port, PD_MSG_CTRL_WAIT); + break; + } + break; + case PD_CTRL_PR_SWAP: + if (port->typec_caps.type != TYPEC_PORT_DRP) { + tcpm_queue_message(port, PD_MSG_CTRL_REJECT); + break; + } + switch (port->state) { + case SRC_READY: + case SNK_READY: + tcpm_set_state(port, PR_SWAP_ACCEPT, 0); + break; + default: + tcpm_queue_message(port, PD_MSG_CTRL_WAIT); + break; + } + break; + case PD_CTRL_VCONN_SWAP: + switch (port->state) { + case SRC_READY: + case SNK_READY: + tcpm_set_state(port, VCONN_SWAP_ACCEPT, 0); + break; + default: + tcpm_queue_message(port, PD_MSG_CTRL_WAIT); + break; + } + break; + default: + tcpm_log(port, "Unhandled ctrl message type %#x", type); + break; + } +} + +static void tcpm_pd_rx_handler(struct work_struct *work) +{ + struct pd_rx_event *event = container_of(work, + struct pd_rx_event, work); + const struct pd_message *msg = &event->msg; + unsigned int cnt = pd_header_cnt_le(msg->header); + struct tcpm_port *port = event->port; + + mutex_lock(&port->lock); + + tcpm_log(port, "PD RX, header: %#x [%d]", le16_to_cpu(msg->header), + port->attached); + + if (port->attached) { + /* + * If both ends believe to be DFP/host, we have a data role + * mismatch. + */ + if (!!(le16_to_cpu(msg->header) & PD_HEADER_DATA_ROLE) == + (port->data_role == TYPEC_HOST)) { + tcpm_log(port, + "Data role mismatch, initiating error recovery"); + tcpm_set_state(port, ERROR_RECOVERY, 0); + } else { + if (cnt) + tcpm_pd_data_request(port, msg); + else + tcpm_pd_ctrl_request(port, msg); + } + } + + mutex_unlock(&port->lock); + kfree(event); +} + +void tcpm_pd_receive(struct tcpm_port *port, const struct pd_message *msg) +{ + struct pd_rx_event *event; + + event = kzalloc(sizeof(*event), GFP_ATOMIC); + if (!event) + return; + + INIT_WORK(&event->work, tcpm_pd_rx_handler); + event->port = port; + memcpy(&event->msg, msg, sizeof(*msg)); + queue_work(port->wq, &event->work); +} +EXPORT_SYMBOL_GPL(tcpm_pd_receive); + +static int tcpm_pd_send_control(struct tcpm_port *port, + enum pd_ctrl_msg_type type) +{ + struct pd_message msg; + + memset(&msg, 0, sizeof(msg)); + msg.header = PD_HEADER_LE(type, port->pwr_role, + port->data_role, + port->message_id, 0); + + return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg); +} + +/* + * Send queued message without affecting state. + * Return true if state machine should go back to sleep, + * false otherwise. + */ +static bool tcpm_send_queued_message(struct tcpm_port *port) +{ + enum pd_msg_request queued_message; + + do { + queued_message = port->queued_message; + port->queued_message = PD_MSG_NONE; + + switch (queued_message) { + case PD_MSG_CTRL_WAIT: + tcpm_pd_send_control(port, PD_CTRL_WAIT); + break; + case PD_MSG_CTRL_REJECT: + tcpm_pd_send_control(port, PD_CTRL_REJECT); + break; + case PD_MSG_DATA_SINK_CAP: + tcpm_pd_send_sink_caps(port); + break; + case PD_MSG_DATA_SOURCE_CAP: + tcpm_pd_send_source_caps(port); + break; + default: + break; + } + } while (port->queued_message != PD_MSG_NONE); + + if (port->delayed_state != INVALID_STATE) { + if (time_is_after_jiffies(port->delayed_runtime)) { + mod_delayed_work(port->wq, &port->state_machine, + port->delayed_runtime - jiffies); + return true; + } + port->delayed_state = INVALID_STATE; + } + return false; +} + +static int tcpm_pd_check_request(struct tcpm_port *port) +{ + u32 pdo, rdo = port->sink_request; + unsigned int max, op, pdo_max, index; + enum pd_pdo_type type; + + index = rdo_index(rdo); + if (!index || index > port->nr_src_pdo) + return -EINVAL; + + pdo = port->src_pdo[index - 1]; + type = pdo_type(pdo); + switch (type) { + case PDO_TYPE_FIXED: + case PDO_TYPE_VAR: + max = rdo_max_current(rdo); + op = rdo_op_current(rdo); + pdo_max = pdo_max_current(pdo); + + if (op > pdo_max) + return -EINVAL; + if (max > pdo_max && !(rdo & RDO_CAP_MISMATCH)) + return -EINVAL; + + if (type == PDO_TYPE_FIXED) + tcpm_log(port, + "Requested %u mV, %u mA for %u / %u mA", + pdo_fixed_voltage(pdo), pdo_max, op, max); + else + tcpm_log(port, + "Requested %u -> %u mV, %u mA for %u / %u mA", + pdo_min_voltage(pdo), pdo_max_voltage(pdo), + pdo_max, op, max); + break; + case PDO_TYPE_BATT: + max = rdo_max_power(rdo); + op = rdo_op_power(rdo); + pdo_max = pdo_max_power(pdo); + + if (op > pdo_max) + return -EINVAL; + if (max > pdo_max && !(rdo & RDO_CAP_MISMATCH)) + return -EINVAL; + tcpm_log(port, + "Requested %u -> %u mV, %u mW for %u / %u mW", + pdo_min_voltage(pdo), pdo_max_voltage(pdo), + pdo_max, op, max); + break; + default: + return -EINVAL; + } + + port->op_vsafe5v = index == 1; + + return 0; +} + +static int tcpm_pd_select_pdo(struct tcpm_port *port) +{ + unsigned int i, max_mw = 0, max_mv = 0; + int ret = -EINVAL; + + /* + * Select the source PDO providing the most power while staying within + * the board's voltage limits. Prefer PDO providing exp + */ + for (i = 0; i < port->nr_source_caps; i++) { + u32 pdo = port->source_caps[i]; + enum pd_pdo_type type = pdo_type(pdo); + unsigned int mv, ma, mw; + + if (type == PDO_TYPE_FIXED) + mv = pdo_fixed_voltage(pdo); + else + mv = pdo_min_voltage(pdo); + + if (type == PDO_TYPE_BATT) { + mw = pdo_max_power(pdo); + } else { + ma = min(pdo_max_current(pdo), + port->max_snk_ma); + mw = ma * mv / 1000; + } + + /* Perfer higher voltages if available */ + if ((mw > max_mw || (mw == max_mw && mv > max_mv)) && + mv <= port->max_snk_mv) { + ret = i; + max_mw = mw; + max_mv = mv; + } + } + + return ret; +} + +static int tcpm_pd_build_request(struct tcpm_port *port, u32 *rdo) +{ + unsigned int mv, ma, mw, flags; + unsigned int max_ma, max_mw; + enum pd_pdo_type type; + int index; + u32 pdo; + + index = tcpm_pd_select_pdo(port); + if (index < 0) + return -EINVAL; + pdo = port->source_caps[index]; + type = pdo_type(pdo); + + if (type == PDO_TYPE_FIXED) + mv = pdo_fixed_voltage(pdo); + else + mv = pdo_min_voltage(pdo); + + /* Select maximum available current within the board's power limit */ + if (type == PDO_TYPE_BATT) { + mw = pdo_max_power(pdo); + ma = 1000 * min(mw, port->max_snk_mw) / mv; + } else { + ma = min(pdo_max_current(pdo), + 1000 * port->max_snk_mw / mv); + } + ma = min(ma, port->max_snk_ma); + + /* XXX: Any other flags need to be set? */ + flags = 0; + + /* Set mismatch bit if offered power is less than operating power */ + mw = ma * mv / 1000; + max_ma = ma; + max_mw = mw; + if (mw < port->operating_snk_mw) { + flags |= RDO_CAP_MISMATCH; + max_mw = port->operating_snk_mw; + max_ma = max_mw * 1000 / mv; + } + + tcpm_log(port, "cc=%d cc1=%d cc2=%d vbus=%d vconn=%s polarity=%d", + port->cc_req, port->cc1, port->cc2, port->vbus_source, + port->vconn_role == TYPEC_SOURCE ? "source" : "sink", + port->polarity); + + if (type == PDO_TYPE_BATT) { + *rdo = RDO_BATT(index + 1, mw, max_mw, flags); + + tcpm_log(port, "Requesting PDO %d: %u mV, %u mW%s", + index, mv, mw, + flags & RDO_CAP_MISMATCH ? " [mismatch]" : ""); + } else { + *rdo = RDO_FIXED(index + 1, ma, max_ma, flags); + + tcpm_log(port, "Requesting PDO %d: %u mV, %u mA%s", + index, mv, ma, + flags & RDO_CAP_MISMATCH ? " [mismatch]" : ""); + } + + port->current_limit = ma; + port->supply_voltage = mv; + + return 0; +} + +static int tcpm_pd_send_request(struct tcpm_port *port) +{ + struct pd_message msg; + int ret; + u32 rdo; + + ret = tcpm_pd_build_request(port, &rdo); + if (ret < 0) + return ret; + + memset(&msg, 0, sizeof(msg)); + msg.header = PD_HEADER_LE(PD_DATA_REQUEST, + port->pwr_role, + port->data_role, + port->message_id, 1); + msg.payload[0] = cpu_to_le32(rdo); + + return tcpm_pd_transmit(port, TCPC_TX_SOP, &msg); +} + +static int tcpm_set_vbus(struct tcpm_port *port, bool enable) +{ + int ret; + + if (enable && port->vbus_charge) + return -EINVAL; + + tcpm_log(port, "vbus:=%d charge=%d", enable, port->vbus_charge); + + ret = port->tcpc->set_vbus(port->tcpc, enable, port->vbus_charge); + if (ret < 0) + return ret; + + port->vbus_source = enable; + return 0; +} + +static int tcpm_set_charge(struct tcpm_port *port, bool charge) +{ + int ret; + + if (charge && port->vbus_source) + return -EINVAL; + + if (charge != port->vbus_charge) { + tcpm_log(port, "vbus=%d charge:=%d", port->vbus_source, charge); + ret = port->tcpc->set_vbus(port->tcpc, port->vbus_source, + charge); + if (ret < 0) + return ret; + } + port->vbus_charge = charge; + return 0; +} + +static bool tcpm_start_drp_toggling(struct tcpm_port *port) +{ + int ret; + + if (port->tcpc->start_drp_toggling && + port->typec_caps.type == TYPEC_PORT_DRP) { + tcpm_log_force(port, "Start DRP toggling"); + ret = port->tcpc->start_drp_toggling(port->tcpc, + tcpm_rp_cc(port)); + if (!ret) + return true; + } + + return false; +} + +static void tcpm_set_cc(struct tcpm_port *port, enum typec_cc_status cc) +{ + tcpm_log(port, "cc:=%d", cc); + port->cc_req = cc; + port->tcpc->set_cc(port->tcpc, cc); +} + +static int tcpm_init_vbus(struct tcpm_port *port) +{ + int ret; + + ret = port->tcpc->set_vbus(port->tcpc, false, false); + port->vbus_source = false; + port->vbus_charge = false; + return ret; +} + +static int tcpm_init_vconn(struct tcpm_port *port) +{ + int ret; + + ret = port->tcpc->set_vconn(port->tcpc, false); + port->vconn_role = TYPEC_SINK; + return ret; +} + +static void tcpm_typec_connect(struct tcpm_port *port) +{ + if (!port->connected) { + /* Make sure we don't report stale identity information */ + memset(&port->partner_ident, 0, sizeof(port->partner_ident)); + port->partner_desc.usb_pd = port->pd_capable; + if (tcpm_port_is_debug(port)) + port->partner_desc.accessory = TYPEC_ACCESSORY_DEBUG; + else if (tcpm_port_is_audio(port)) + port->partner_desc.accessory = TYPEC_ACCESSORY_AUDIO; + else + port->partner_desc.accessory = TYPEC_ACCESSORY_NONE; + port->partner = typec_register_partner(port->typec_port, + &port->partner_desc); + port->connected = true; + } +} + +static int tcpm_src_attach(struct tcpm_port *port) +{ + enum typec_cc_polarity polarity = + port->cc2 == TYPEC_CC_RD ? TYPEC_POLARITY_CC2 + : TYPEC_POLARITY_CC1; + int ret; + + if (port->attached) + return 0; + + ret = tcpm_set_polarity(port, polarity); + if (ret < 0) + return ret; + + ret = tcpm_set_roles(port, true, TYPEC_SOURCE, TYPEC_HOST); + if (ret < 0) + return ret; + + ret = port->tcpc->set_pd_rx(port->tcpc, true); + if (ret < 0) + goto out_disable_mux; + + /* + * USB Type-C specification, version 1.2, + * chapter 4.5.2.2.8.1 (Attached.SRC Requirements) + * Enable VCONN only if the non-RD port is set to RA. + */ + if ((polarity == TYPEC_POLARITY_CC1 && port->cc2 == TYPEC_CC_RA) || + (polarity == TYPEC_POLARITY_CC2 && port->cc1 == TYPEC_CC_RA)) { + ret = tcpm_set_vconn(port, true); + if (ret < 0) + goto out_disable_pd; + } + + ret = tcpm_set_vbus(port, true); + if (ret < 0) + goto out_disable_vconn; + + port->pd_capable = false; + + port->partner = NULL; + + port->attached = true; + port->send_discover = true; + + return 0; + +out_disable_vconn: + tcpm_set_vconn(port, false); +out_disable_pd: + port->tcpc->set_pd_rx(port->tcpc, false); +out_disable_mux: + tcpm_mux_set(port, TYPEC_MUX_NONE, TCPC_USB_SWITCH_DISCONNECT); + return ret; +} + +static void tcpm_typec_disconnect(struct tcpm_port *port) +{ + if (port->connected) { + typec_unregister_partner(port->partner); + port->partner = NULL; + port->connected = false; + } +} + +static void tcpm_unregister_altmodes(struct tcpm_port *port) +{ + struct pd_mode_data *modep = &port->mode_data; + int i; + + for (i = 0; i < modep->altmodes; i++) { + typec_unregister_altmode(port->partner_altmode[i]); + port->partner_altmode[i] = NULL; + } + + memset(modep, 0, sizeof(*modep)); +} + +static void tcpm_reset_port(struct tcpm_port *port) +{ + tcpm_unregister_altmodes(port); + tcpm_typec_disconnect(port); + port->attached = false; + port->pd_capable = false; + + port->tcpc->set_pd_rx(port->tcpc, false); + tcpm_init_vbus(port); /* also disables charging */ + tcpm_init_vconn(port); + tcpm_set_current_limit(port, 0, 0); + tcpm_set_polarity(port, TYPEC_POLARITY_CC1); + tcpm_set_attached_state(port, false); + port->try_src_count = 0; + port->try_snk_count = 0; +} + +static void tcpm_detach(struct tcpm_port *port) +{ + if (!port->attached) + return; + + if (tcpm_port_is_disconnected(port)) + port->hard_reset_count = 0; + + tcpm_reset_port(port); +} + +static void tcpm_src_detach(struct tcpm_port *port) +{ + tcpm_detach(port); +} + +static int tcpm_snk_attach(struct tcpm_port *port) +{ + int ret; + + if (port->attached) + return 0; + + ret = tcpm_set_polarity(port, port->cc2 != TYPEC_CC_OPEN ? + TYPEC_POLARITY_CC2 : TYPEC_POLARITY_CC1); + if (ret < 0) + return ret; + + ret = tcpm_set_roles(port, true, TYPEC_SINK, TYPEC_DEVICE); + if (ret < 0) + return ret; + + port->pd_capable = false; + + port->partner = NULL; + + port->attached = true; + port->send_discover = true; + + return 0; +} + +static void tcpm_snk_detach(struct tcpm_port *port) +{ + tcpm_detach(port); + + /* XXX: (Dis)connect SuperSpeed mux? */ +} + +static int tcpm_acc_attach(struct tcpm_port *port) +{ + int ret; + + if (port->attached) + return 0; + + ret = tcpm_set_roles(port, true, TYPEC_SOURCE, TYPEC_HOST); + if (ret < 0) + return ret; + + port->partner = NULL; + + tcpm_typec_connect(port); + + port->attached = true; + + return 0; +} + +static void tcpm_acc_detach(struct tcpm_port *port) +{ + tcpm_detach(port); +} + +static inline enum tcpm_state hard_reset_state(struct tcpm_port *port) +{ + if (port->hard_reset_count < PD_N_HARD_RESET_COUNT) + return HARD_RESET_SEND; + if (port->pd_capable) + return ERROR_RECOVERY; + if (port->pwr_role == TYPEC_SOURCE) + return SRC_UNATTACHED; + if (port->state == SNK_WAIT_CAPABILITIES) + return SNK_READY; + return SNK_UNATTACHED; +} + +static inline enum tcpm_state ready_state(struct tcpm_port *port) +{ + if (port->pwr_role == TYPEC_SOURCE) + return SRC_READY; + else + return SNK_READY; +} + +static inline enum tcpm_state unattached_state(struct tcpm_port *port) +{ + if (port->pwr_role == TYPEC_SOURCE) + return SRC_UNATTACHED; + else + return SNK_UNATTACHED; +} + +static void tcpm_check_send_discover(struct tcpm_port *port) +{ + if (port->data_role == TYPEC_HOST && port->send_discover && + port->pd_capable) { + tcpm_send_vdm(port, USB_SID_PD, CMD_DISCOVER_IDENT, NULL, 0); + port->send_discover = false; + } +} + +static void tcpm_swap_complete(struct tcpm_port *port, int result) +{ + if (port->swap_pending) { + port->swap_status = result; + port->swap_pending = false; + complete(&port->swap_complete); + } +} + +static void run_state_machine(struct tcpm_port *port) +{ + int ret; + + port->enter_state = port->state; + switch (port->state) { + case DRP_TOGGLING: + break; + /* SRC states */ + case SRC_UNATTACHED: + tcpm_swap_complete(port, -ENOTCONN); + tcpm_src_detach(port); + if (tcpm_start_drp_toggling(port)) { + tcpm_set_state(port, DRP_TOGGLING, 0); + break; + } + tcpm_set_cc(port, tcpm_rp_cc(port)); + if (port->typec_caps.type == TYPEC_PORT_DRP) + tcpm_set_state(port, SNK_UNATTACHED, PD_T_DRP_SNK); + break; + case SRC_ATTACH_WAIT: + if (tcpm_port_is_debug(port)) + tcpm_set_state(port, DEBUG_ACC_ATTACHED, + PD_T_CC_DEBOUNCE); + else if (tcpm_port_is_audio(port)) + tcpm_set_state(port, AUDIO_ACC_ATTACHED, + PD_T_CC_DEBOUNCE); + else if (tcpm_port_is_source(port)) + tcpm_set_state(port, + tcpm_try_snk(port) ? SNK_TRY + : SRC_ATTACHED, + PD_T_CC_DEBOUNCE); + break; + + case SNK_TRY: + port->try_snk_count++; + /* + * Requirements: + * - Do not drive vconn or vbus + * - Terminate CC pins (both) to Rd + * Action: + * - Wait for tDRPTry (PD_T_DRP_TRY). + * Until then, ignore any state changes. + */ + tcpm_set_cc(port, TYPEC_CC_RD); + tcpm_set_state(port, SNK_TRY_WAIT, PD_T_DRP_TRY); + break; + case SNK_TRY_WAIT: + if (port->vbus_present && tcpm_port_is_sink(port)) { + tcpm_set_state(port, SNK_ATTACHED, 0); + break; + } + if (!tcpm_port_is_sink(port)) { + tcpm_set_state(port, SRC_TRYWAIT, + PD_T_PD_DEBOUNCE); + break; + } + /* No vbus, cc state is sink or open */ + tcpm_set_state(port, SRC_TRYWAIT_UNATTACHED, PD_T_DRP_TRYWAIT); + break; + case SRC_TRYWAIT: + tcpm_set_cc(port, tcpm_rp_cc(port)); + if (!port->vbus_present && tcpm_port_is_source(port)) + tcpm_set_state(port, SRC_ATTACHED, PD_T_CC_DEBOUNCE); + else + tcpm_set_state(port, SRC_TRYWAIT_UNATTACHED, + PD_T_DRP_TRY); + break; + case SRC_TRYWAIT_UNATTACHED: + tcpm_set_state(port, SNK_UNATTACHED, 0); + break; + + case SRC_ATTACHED: + ret = tcpm_src_attach(port); + tcpm_set_state(port, SRC_UNATTACHED, + ret < 0 ? 0 : PD_T_PS_SOURCE_ON); + break; + case SRC_STARTUP: + typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_USB); + port->pwr_opmode = TYPEC_PWR_MODE_USB; + port->caps_count = 0; + port->message_id = 0; + port->explicit_contract = false; + tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0); + break; + case SRC_SEND_CAPABILITIES: + port->caps_count++; + if (port->caps_count > PD_N_CAPS_COUNT) { + tcpm_set_state(port, SRC_READY, 0); + break; + } + ret = tcpm_pd_send_source_caps(port); + if (ret < 0) { + tcpm_set_state(port, SRC_SEND_CAPABILITIES, + PD_T_SEND_SOURCE_CAP); + } else { + /* + * Per standard, we should clear the reset counter here. + * However, that can result in state machine hang-ups. + * Reset it only in READY state to improve stability. + */ + /* port->hard_reset_count = 0; */ + port->caps_count = 0; + port->pd_capable = true; + tcpm_set_state_cond(port, hard_reset_state(port), + PD_T_SEND_SOURCE_CAP); + } + break; + case SRC_NEGOTIATE_CAPABILITIES: + ret = tcpm_pd_check_request(port); + if (ret < 0) { + tcpm_pd_send_control(port, PD_CTRL_REJECT); + if (!port->explicit_contract) { + tcpm_set_state(port, + SRC_WAIT_NEW_CAPABILITIES, 0); + } else { + tcpm_set_state(port, SRC_READY, 0); + } + } else { + tcpm_pd_send_control(port, PD_CTRL_ACCEPT); + tcpm_set_state(port, SRC_TRANSITION_SUPPLY, + PD_T_SRC_TRANSITION); + } + break; + case SRC_TRANSITION_SUPPLY: + /* XXX: regulator_set_voltage(vbus, ...) */ + tcpm_pd_send_control(port, PD_CTRL_PS_RDY); + port->explicit_contract = true; + typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_PD); + port->pwr_opmode = TYPEC_PWR_MODE_PD; + tcpm_set_state_cond(port, SRC_READY, 0); + break; + case SRC_READY: +#if 1 + port->hard_reset_count = 0; +#endif + port->try_src_count = 0; + + tcpm_typec_connect(port); + + tcpm_check_send_discover(port); + /* + * 6.3.5 + * Sending ping messages is not necessary if + * - the source operates at vSafe5V + * or + * - The system is not operating in PD mode + * or + * - Both partners are connected using a Type-C connector + * XXX How do we know that ? + */ + if (port->pwr_opmode == TYPEC_PWR_MODE_PD && + !port->op_vsafe5v) { + tcpm_pd_send_control(port, PD_CTRL_PING); + tcpm_set_state_cond(port, SRC_READY, + PD_T_SOURCE_ACTIVITY); + } + break; + case SRC_WAIT_NEW_CAPABILITIES: + /* Nothing to do... */ + break; + + /* SNK states */ + case SNK_UNATTACHED: + tcpm_swap_complete(port, -ENOTCONN); + tcpm_snk_detach(port); + if (tcpm_start_drp_toggling(port)) { + tcpm_set_state(port, DRP_TOGGLING, 0); + break; + } + tcpm_set_cc(port, TYPEC_CC_RD); + if (port->typec_caps.type == TYPEC_PORT_DRP) + tcpm_set_state(port, SRC_UNATTACHED, PD_T_DRP_SRC); + break; + case SNK_ATTACH_WAIT: + if ((port->cc1 == TYPEC_CC_OPEN && + port->cc2 != TYPEC_CC_OPEN) || + (port->cc1 != TYPEC_CC_OPEN && + port->cc2 == TYPEC_CC_OPEN)) + tcpm_set_state(port, SNK_DEBOUNCED, + PD_T_CC_DEBOUNCE); + else if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, SNK_UNATTACHED, + PD_T_PD_DEBOUNCE); + break; + case SNK_DEBOUNCED: + if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, SNK_UNATTACHED, + PD_T_PD_DEBOUNCE); + else if (port->vbus_present) + tcpm_set_state(port, + tcpm_try_src(port) ? SRC_TRY + : SNK_ATTACHED, + 0); + else + /* Wait for VBUS, but not forever */ + tcpm_set_state(port, SNK_UNATTACHED, PD_T_PS_SOURCE_ON); + break; + + case SRC_TRY: + port->try_src_count++; + tcpm_set_cc(port, tcpm_rp_cc(port)); + tcpm_set_state(port, SNK_TRYWAIT, PD_T_DRP_TRY); + break; + case SRC_TRY_DEBOUNCE: + tcpm_set_state(port, SRC_ATTACHED, PD_T_PD_DEBOUNCE); + break; + case SNK_TRYWAIT: + tcpm_set_cc(port, TYPEC_CC_RD); + tcpm_set_state(port, SNK_TRYWAIT_DEBOUNCE, PD_T_CC_DEBOUNCE); + break; + case SNK_TRYWAIT_DEBOUNCE: + if (port->vbus_present) { + tcpm_set_state(port, SNK_ATTACHED, 0); + break; + } + if (tcpm_port_is_disconnected(port)) { + tcpm_set_state(port, SNK_UNATTACHED, + PD_T_PD_DEBOUNCE); + break; + } + if (tcpm_port_is_source(port)) + tcpm_set_state(port, SRC_ATTACHED, 0); + /* XXX Are we supposed to stay in this state ? */ + break; + case SNK_TRYWAIT_VBUS: + tcpm_set_state(port, SNK_ATTACHED, PD_T_CC_DEBOUNCE); + break; + + case SNK_ATTACHED: + ret = tcpm_snk_attach(port); + if (ret < 0) + tcpm_set_state(port, SNK_UNATTACHED, 0); + else + tcpm_set_state(port, SNK_STARTUP, 0); + break; + case SNK_STARTUP: + /* XXX: callback into infrastructure */ + typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_USB); + port->pwr_opmode = TYPEC_PWR_MODE_USB; + port->message_id = 0; + port->explicit_contract = false; + tcpm_set_state(port, SNK_DISCOVERY, 0); + break; + case SNK_DISCOVERY: + if (port->vbus_present) { + tcpm_set_current_limit(port, + tcpm_get_current_limit(port), + 5000); + tcpm_set_charge(port, true); + tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0); + break; + } + /* + * For DRP, timeouts differ. Also, handling is supposed to be + * different and much more complex (dead battery detection; + * see USB power delivery specification, section 8.3.3.6.1.5.1). + */ + tcpm_set_state(port, hard_reset_state(port), + port->typec_caps.type == TYPEC_PORT_DRP ? + PD_T_DB_DETECT : PD_T_NO_RESPONSE); + break; + case SNK_DISCOVERY_DEBOUNCE: + tcpm_set_state(port, SNK_DISCOVERY_DEBOUNCE_DONE, + PD_T_CC_DEBOUNCE); + break; + case SNK_DISCOVERY_DEBOUNCE_DONE: + if (!tcpm_port_is_disconnected(port) && + tcpm_port_is_sink(port) && + time_is_after_jiffies(port->delayed_runtime)) { + tcpm_set_state(port, SNK_DISCOVERY, + port->delayed_runtime - jiffies); + break; + } + tcpm_set_state(port, unattached_state(port), 0); + break; + case SNK_WAIT_CAPABILITIES: + ret = port->tcpc->set_pd_rx(port->tcpc, true); + if (ret < 0) { + tcpm_set_state(port, SNK_READY, 0); + break; + } + /* + * If VBUS has never been low, and we time out waiting + * for source cap, try a soft reset first, in case we + * were already in a stable contract before this boot. + * Do this only once. + */ + if (port->vbus_never_low) { + port->vbus_never_low = false; + tcpm_set_state(port, SOFT_RESET_SEND, + PD_T_SINK_WAIT_CAP); + } else { + tcpm_set_state(port, hard_reset_state(port), + PD_T_SINK_WAIT_CAP); + } + break; + case SNK_NEGOTIATE_CAPABILITIES: + port->pd_capable = true; + port->hard_reset_count = 0; + ret = tcpm_pd_send_request(port); + if (ret < 0) { + /* Let the Source send capabilities again. */ + tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0); + } else { + tcpm_set_state_cond(port, hard_reset_state(port), + PD_T_SENDER_RESPONSE); + } + break; + case SNK_TRANSITION_SINK: + case SNK_TRANSITION_SINK_VBUS: + tcpm_set_state(port, hard_reset_state(port), + PD_T_PS_TRANSITION); + break; + case SNK_READY: + port->try_snk_count = 0; + port->explicit_contract = true; + typec_set_pwr_opmode(port->typec_port, TYPEC_PWR_MODE_PD); + port->pwr_opmode = TYPEC_PWR_MODE_PD; + + tcpm_typec_connect(port); + + tcpm_check_send_discover(port); + break; + + /* Accessory states */ + case ACC_UNATTACHED: + tcpm_acc_detach(port); + tcpm_set_state(port, SRC_UNATTACHED, 0); + break; + case DEBUG_ACC_ATTACHED: + case AUDIO_ACC_ATTACHED: + ret = tcpm_acc_attach(port); + if (ret < 0) + tcpm_set_state(port, ACC_UNATTACHED, 0); + break; + case AUDIO_ACC_DEBOUNCE: + tcpm_set_state(port, ACC_UNATTACHED, PD_T_CC_DEBOUNCE); + break; + + /* Hard_Reset states */ + case HARD_RESET_SEND: + tcpm_pd_transmit(port, TCPC_TX_HARD_RESET, NULL); + tcpm_set_state(port, HARD_RESET_START, 0); + break; + case HARD_RESET_START: + port->hard_reset_count++; + port->tcpc->set_pd_rx(port->tcpc, false); + tcpm_unregister_altmodes(port); + port->send_discover = true; + if (port->pwr_role == TYPEC_SOURCE) + tcpm_set_state(port, SRC_HARD_RESET_VBUS_OFF, + PD_T_PS_HARD_RESET); + else + tcpm_set_state(port, SNK_HARD_RESET_SINK_OFF, 0); + break; + case SRC_HARD_RESET_VBUS_OFF: + tcpm_set_vconn(port, true); + tcpm_set_vbus(port, false); + tcpm_set_roles(port, false, TYPEC_SOURCE, TYPEC_HOST); + tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, PD_T_SRC_RECOVER); + break; + case SRC_HARD_RESET_VBUS_ON: + tcpm_set_vbus(port, true); + port->tcpc->set_pd_rx(port->tcpc, true); + tcpm_set_attached_state(port, true); + tcpm_set_state(port, SRC_UNATTACHED, PD_T_PS_SOURCE_ON); + break; + case SNK_HARD_RESET_SINK_OFF: + tcpm_set_vconn(port, false); + tcpm_set_charge(port, false); + tcpm_set_roles(port, false, TYPEC_SINK, TYPEC_DEVICE); + /* + * VBUS may or may not toggle, depending on the adapter. + * If it doesn't toggle, transition to SNK_HARD_RESET_SINK_ON + * directly after timeout. + */ + tcpm_set_state(port, SNK_HARD_RESET_SINK_ON, PD_T_SAFE_0V); + break; + case SNK_HARD_RESET_WAIT_VBUS: + /* Assume we're disconnected if VBUS doesn't come back. */ + tcpm_set_state(port, SNK_UNATTACHED, + PD_T_SRC_RECOVER_MAX + PD_T_SRC_TURN_ON); + break; + case SNK_HARD_RESET_SINK_ON: + /* Note: There is no guarantee that VBUS is on in this state */ + /* + * XXX: + * The specification suggests that dual mode ports in sink + * mode should transition to state PE_SRC_Transition_to_default. + * See USB power delivery specification chapter 8.3.3.6.1.3. + * This would mean to to + * - turn off VCONN, reset power supply + * - request hardware reset + * - turn on VCONN + * - Transition to state PE_Src_Startup + * SNK only ports shall transition to state Snk_Startup + * (see chapter 8.3.3.3.8). + * Similar, dual-mode ports in source mode should transition + * to PE_SNK_Transition_to_default. + */ + tcpm_set_attached_state(port, true); + tcpm_set_state(port, SNK_STARTUP, 0); + break; + + /* Soft_Reset states */ + case SOFT_RESET: + port->message_id = 0; + tcpm_pd_send_control(port, PD_CTRL_ACCEPT); + if (port->pwr_role == TYPEC_SOURCE) + tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0); + else + tcpm_set_state(port, SNK_WAIT_CAPABILITIES, 0); + break; + case SOFT_RESET_SEND: + port->message_id = 0; + if (tcpm_pd_send_control(port, PD_CTRL_SOFT_RESET)) + tcpm_set_state_cond(port, hard_reset_state(port), 0); + else + tcpm_set_state_cond(port, hard_reset_state(port), + PD_T_SENDER_RESPONSE); + break; + + /* DR_Swap states */ + case DR_SWAP_SEND: + tcpm_pd_send_control(port, PD_CTRL_DR_SWAP); + tcpm_set_state_cond(port, DR_SWAP_SEND_TIMEOUT, + PD_T_SENDER_RESPONSE); + break; + case DR_SWAP_ACCEPT: + tcpm_pd_send_control(port, PD_CTRL_ACCEPT); + tcpm_set_state_cond(port, DR_SWAP_CHANGE_DR, 0); + break; + case DR_SWAP_SEND_TIMEOUT: + tcpm_swap_complete(port, -ETIMEDOUT); + tcpm_set_state(port, ready_state(port), 0); + break; + case DR_SWAP_CHANGE_DR: + if (port->data_role == TYPEC_HOST) { + tcpm_unregister_altmodes(port); + tcpm_set_roles(port, true, port->pwr_role, + TYPEC_DEVICE); + } else { + tcpm_set_roles(port, true, port->pwr_role, + TYPEC_HOST); + port->send_discover = true; + } + tcpm_swap_complete(port, 0); + tcpm_set_state(port, ready_state(port), 0); + break; + + /* PR_Swap states */ + case PR_SWAP_ACCEPT: + tcpm_pd_send_control(port, PD_CTRL_ACCEPT); + tcpm_set_state(port, PR_SWAP_START, 0); + break; + case PR_SWAP_SEND: + tcpm_pd_send_control(port, PD_CTRL_PR_SWAP); + tcpm_set_state_cond(port, PR_SWAP_SEND_TIMEOUT, + PD_T_SENDER_RESPONSE); + break; + case PR_SWAP_SEND_TIMEOUT: + tcpm_swap_complete(port, -ETIMEDOUT); + tcpm_set_state(port, ready_state(port), 0); + break; + case PR_SWAP_START: + if (port->pwr_role == TYPEC_SOURCE) + tcpm_set_state(port, PR_SWAP_SRC_SNK_TRANSITION_OFF, + PD_T_SRC_TRANSITION); + else + tcpm_set_state(port, PR_SWAP_SNK_SRC_SINK_OFF, 0); + break; + case PR_SWAP_SRC_SNK_TRANSITION_OFF: + tcpm_set_vbus(port, false); + port->explicit_contract = false; + tcpm_set_state(port, PR_SWAP_SRC_SNK_SOURCE_OFF, + PD_T_PS_SOURCE_OFF); + break; + case PR_SWAP_SRC_SNK_SOURCE_OFF: + tcpm_set_cc(port, TYPEC_CC_RD); + if (tcpm_pd_send_control(port, PD_CTRL_PS_RDY)) { + tcpm_set_state(port, ERROR_RECOVERY, 0); + break; + } + tcpm_set_state_cond(port, SNK_UNATTACHED, PD_T_PS_SOURCE_ON); + break; + case PR_SWAP_SRC_SNK_SINK_ON: + tcpm_set_pwr_role(port, TYPEC_SINK); + tcpm_swap_complete(port, 0); + tcpm_set_state(port, SNK_STARTUP, 0); + break; + case PR_SWAP_SNK_SRC_SINK_OFF: + tcpm_set_charge(port, false); + tcpm_set_state(port, hard_reset_state(port), + PD_T_PS_SOURCE_OFF); + break; + case PR_SWAP_SNK_SRC_SOURCE_ON: + tcpm_set_cc(port, tcpm_rp_cc(port)); + tcpm_set_vbus(port, true); + tcpm_pd_send_control(port, PD_CTRL_PS_RDY); + tcpm_set_pwr_role(port, TYPEC_SOURCE); + tcpm_swap_complete(port, 0); + tcpm_set_state(port, SRC_STARTUP, 0); + break; + + case VCONN_SWAP_ACCEPT: + tcpm_pd_send_control(port, PD_CTRL_ACCEPT); + tcpm_set_state(port, VCONN_SWAP_START, 0); + break; + case VCONN_SWAP_SEND: + tcpm_pd_send_control(port, PD_CTRL_VCONN_SWAP); + tcpm_set_state(port, VCONN_SWAP_SEND_TIMEOUT, + PD_T_SENDER_RESPONSE); + break; + case VCONN_SWAP_SEND_TIMEOUT: + tcpm_swap_complete(port, -ETIMEDOUT); + tcpm_set_state(port, ready_state(port), 0); + break; + case VCONN_SWAP_START: + if (port->vconn_role == TYPEC_SOURCE) + tcpm_set_state(port, VCONN_SWAP_WAIT_FOR_VCONN, 0); + else + tcpm_set_state(port, VCONN_SWAP_TURN_ON_VCONN, 0); + break; + case VCONN_SWAP_WAIT_FOR_VCONN: + tcpm_set_state(port, hard_reset_state(port), + PD_T_VCONN_SOURCE_ON); + break; + case VCONN_SWAP_TURN_ON_VCONN: + tcpm_set_vconn(port, true); + tcpm_pd_send_control(port, PD_CTRL_PS_RDY); + tcpm_swap_complete(port, 0); + tcpm_set_state(port, ready_state(port), 0); + break; + case VCONN_SWAP_TURN_OFF_VCONN: + tcpm_set_vconn(port, false); + tcpm_swap_complete(port, 0); + tcpm_set_state(port, ready_state(port), 0); + break; + + case DR_SWAP_CANCEL: + case PR_SWAP_CANCEL: + case VCONN_SWAP_CANCEL: + tcpm_swap_complete(port, port->swap_status); + if (port->pwr_role == TYPEC_SOURCE) + tcpm_set_state(port, SRC_READY, 0); + else + tcpm_set_state(port, SNK_READY, 0); + break; + + case BIST_RX: + switch (BDO_MODE_MASK(port->bist_request)) { + case BDO_MODE_CARRIER2: + tcpm_pd_transmit(port, TCPC_TX_BIST_MODE_2, NULL); + break; + default: + break; + } + /* Always switch to unattached state */ + tcpm_set_state(port, unattached_state(port), 0); + break; + case ERROR_RECOVERY: + tcpm_swap_complete(port, -EPROTO); + tcpm_reset_port(port); + + tcpm_set_cc(port, TYPEC_CC_OPEN); + tcpm_set_state(port, ERROR_RECOVERY_WAIT_OFF, + PD_T_ERROR_RECOVERY); + break; + case ERROR_RECOVERY_WAIT_OFF: + tcpm_set_state(port, + tcpm_default_state(port), + port->vbus_present ? PD_T_PS_SOURCE_OFF : 0); + break; + default: + WARN(1, "Unexpected port state %d\n", port->state); + break; + } +} + +static void tcpm_state_machine_work(struct work_struct *work) +{ + struct tcpm_port *port = container_of(work, struct tcpm_port, + state_machine.work); + enum tcpm_state prev_state; + + mutex_lock(&port->lock); + port->state_machine_running = true; + + if (port->queued_message && tcpm_send_queued_message(port)) + goto done; + + /* If we were queued due to a delayed state change, update it now */ + if (port->delayed_state) { + tcpm_log(port, "state change %s -> %s [delayed %ld ms]", + tcpm_states[port->state], + tcpm_states[port->delayed_state], port->delay_ms); + port->prev_state = port->state; + port->state = port->delayed_state; + port->delayed_state = INVALID_STATE; + } + + /* + * Continue running as long as we have (non-delayed) state changes + * to make. + */ + do { + prev_state = port->state; + run_state_machine(port); + if (port->queued_message) + tcpm_send_queued_message(port); + } while (port->state != prev_state && !port->delayed_state); + +done: + port->state_machine_running = false; + mutex_unlock(&port->lock); +} + +static void _tcpm_cc_change(struct tcpm_port *port, enum typec_cc_status cc1, + enum typec_cc_status cc2) +{ + enum typec_cc_status old_cc1, old_cc2; + enum tcpm_state new_state; + + old_cc1 = port->cc1; + old_cc2 = port->cc2; + port->cc1 = cc1; + port->cc2 = cc2; + + tcpm_log_force(port, + "CC1: %u -> %u, CC2: %u -> %u [state %s, polarity %d, %s]", + old_cc1, cc1, old_cc2, cc2, tcpm_states[port->state], + port->polarity, + tcpm_port_is_disconnected(port) ? "disconnected" + : "connected"); + + switch (port->state) { + case DRP_TOGGLING: + if (tcpm_port_is_debug(port) || tcpm_port_is_audio(port) || + tcpm_port_is_source(port)) + tcpm_set_state(port, SRC_ATTACH_WAIT, 0); + else if (tcpm_port_is_sink(port)) + tcpm_set_state(port, SNK_ATTACH_WAIT, 0); + break; + case SRC_UNATTACHED: + case ACC_UNATTACHED: + if (tcpm_port_is_debug(port) || tcpm_port_is_audio(port) || + tcpm_port_is_source(port)) + tcpm_set_state(port, SRC_ATTACH_WAIT, 0); + break; + case SRC_ATTACH_WAIT: + if (tcpm_port_is_disconnected(port) || + tcpm_port_is_audio_detached(port)) + tcpm_set_state(port, SRC_UNATTACHED, 0); + else if (cc1 != old_cc1 || cc2 != old_cc2) + tcpm_set_state(port, SRC_ATTACH_WAIT, 0); + break; + case SRC_ATTACHED: + if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, SRC_UNATTACHED, 0); + break; + + case SNK_UNATTACHED: + if (tcpm_port_is_sink(port)) + tcpm_set_state(port, SNK_ATTACH_WAIT, 0); + break; + case SNK_ATTACH_WAIT: + if ((port->cc1 == TYPEC_CC_OPEN && + port->cc2 != TYPEC_CC_OPEN) || + (port->cc1 != TYPEC_CC_OPEN && + port->cc2 == TYPEC_CC_OPEN)) + new_state = SNK_DEBOUNCED; + else if (tcpm_port_is_disconnected(port)) + new_state = SNK_UNATTACHED; + else + break; + if (new_state != port->delayed_state) + tcpm_set_state(port, SNK_ATTACH_WAIT, 0); + break; + case SNK_DEBOUNCED: + if (tcpm_port_is_disconnected(port)) + new_state = SNK_UNATTACHED; + else if (port->vbus_present) + new_state = tcpm_try_src(port) ? SRC_TRY : SNK_ATTACHED; + else + new_state = SNK_UNATTACHED; + if (new_state != port->delayed_state) + tcpm_set_state(port, SNK_DEBOUNCED, 0); + break; + case SNK_READY: + if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, unattached_state(port), 0); + else if (!port->pd_capable && + (cc1 != old_cc1 || cc2 != old_cc2)) + tcpm_set_current_limit(port, + tcpm_get_current_limit(port), + 5000); + break; + + case AUDIO_ACC_ATTACHED: + if (cc1 == TYPEC_CC_OPEN || cc2 == TYPEC_CC_OPEN) + tcpm_set_state(port, AUDIO_ACC_DEBOUNCE, 0); + break; + case AUDIO_ACC_DEBOUNCE: + if (tcpm_port_is_audio(port)) + tcpm_set_state(port, AUDIO_ACC_ATTACHED, 0); + break; + + case DEBUG_ACC_ATTACHED: + if (cc1 == TYPEC_CC_OPEN || cc2 == TYPEC_CC_OPEN) + tcpm_set_state(port, ACC_UNATTACHED, 0); + break; + + case SNK_TRY: + /* Do nothing, waiting for timeout */ + break; + + case SNK_DISCOVERY: + /* CC line is unstable, wait for debounce */ + if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, SNK_DISCOVERY_DEBOUNCE, 0); + break; + case SNK_DISCOVERY_DEBOUNCE: + break; + + case SRC_TRYWAIT: + /* Hand over to state machine if needed */ + if (!port->vbus_present && tcpm_port_is_source(port)) + new_state = SRC_ATTACHED; + else + new_state = SRC_TRYWAIT_UNATTACHED; + + if (new_state != port->delayed_state) + tcpm_set_state(port, SRC_TRYWAIT, 0); + break; + case SNK_TRY_WAIT: + if (port->vbus_present && tcpm_port_is_sink(port)) { + tcpm_set_state(port, SNK_ATTACHED, 0); + break; + } + if (!tcpm_port_is_sink(port)) + new_state = SRC_TRYWAIT; + else + new_state = SRC_TRYWAIT_UNATTACHED; + + if (new_state != port->delayed_state) + tcpm_set_state(port, SNK_TRY_WAIT, 0); + break; + + case SRC_TRY: + tcpm_set_state(port, SRC_TRY_DEBOUNCE, 0); + break; + case SRC_TRY_DEBOUNCE: + tcpm_set_state(port, SRC_TRY, 0); + break; + case SNK_TRYWAIT_DEBOUNCE: + if (port->vbus_present) { + tcpm_set_state(port, SNK_ATTACHED, 0); + break; + } + if (tcpm_port_is_source(port)) { + tcpm_set_state(port, SRC_ATTACHED, 0); + break; + } + if (tcpm_port_is_disconnected(port) && + port->delayed_state != SNK_UNATTACHED) + tcpm_set_state(port, SNK_TRYWAIT_DEBOUNCE, 0); + break; + + case PR_SWAP_SNK_SRC_SINK_OFF: + case PR_SWAP_SRC_SNK_TRANSITION_OFF: + case PR_SWAP_SRC_SNK_SOURCE_OFF: + /* + * CC state change is expected here; we just turned off power. + * Ignore it. + */ + break; + + default: + if (tcpm_port_is_disconnected(port)) + tcpm_set_state(port, unattached_state(port), 0); + break; + } +} + +static void _tcpm_pd_vbus_on(struct tcpm_port *port) +{ + enum tcpm_state new_state; + + tcpm_log_force(port, "VBUS on"); + port->vbus_present = true; + switch (port->state) { + case SNK_TRANSITION_SINK_VBUS: + tcpm_set_state(port, SNK_READY, 0); + break; + case SNK_DISCOVERY: + tcpm_set_state(port, SNK_DISCOVERY, 0); + break; + + case SNK_DEBOUNCED: + tcpm_set_state(port, tcpm_try_src(port) ? SRC_TRY + : SNK_ATTACHED, + 0); + break; + case SNK_HARD_RESET_WAIT_VBUS: + tcpm_set_state(port, SNK_HARD_RESET_SINK_ON, 0); + break; + case SRC_ATTACHED: + tcpm_set_state(port, SRC_STARTUP, 0); + break; + case SRC_HARD_RESET_VBUS_ON: + tcpm_set_state(port, SRC_STARTUP, 0); + break; + + case SNK_TRY: + /* Do nothing, waiting for timeout */ + break; + case SRC_TRYWAIT: + /* Hand over to state machine if needed */ + if (port->delayed_state != SRC_TRYWAIT_UNATTACHED) + tcpm_set_state(port, SRC_TRYWAIT, 0); + break; + case SNK_TRY_WAIT: + if (tcpm_port_is_sink(port)) { + tcpm_set_state(port, SNK_ATTACHED, 0); + break; + } + if (!tcpm_port_is_sink(port)) + new_state = SRC_TRYWAIT; + else + new_state = SRC_TRYWAIT_UNATTACHED; + + if (new_state != port->delayed_state) + tcpm_set_state(port, SNK_TRY_WAIT, 0); + break; + case SNK_TRYWAIT: + tcpm_set_state(port, SNK_TRYWAIT_VBUS, 0); + break; + + default: + break; + } +} + +static void _tcpm_pd_vbus_off(struct tcpm_port *port) +{ + enum tcpm_state new_state; + + tcpm_log_force(port, "VBUS off"); + port->vbus_present = false; + port->vbus_never_low = false; + switch (port->state) { + case SNK_HARD_RESET_SINK_OFF: + tcpm_set_state(port, SNK_HARD_RESET_WAIT_VBUS, 0); + break; + case SRC_HARD_RESET_VBUS_OFF: + tcpm_set_state(port, SRC_HARD_RESET_VBUS_ON, 0); + break; + case HARD_RESET_SEND: + break; + + case SNK_TRY: + /* Do nothing, waiting for timeout */ + break; + case SRC_TRYWAIT: + /* Hand over to state machine if needed */ + if (tcpm_port_is_source(port)) + new_state = SRC_ATTACHED; + else + new_state = SRC_TRYWAIT_UNATTACHED; + if (new_state != port->delayed_state) + tcpm_set_state(port, SRC_TRYWAIT, 0); + break; + case SNK_TRY_WAIT: + if (!tcpm_port_is_sink(port)) + new_state = SRC_TRYWAIT; + else + new_state = SRC_TRYWAIT_UNATTACHED; + + if (new_state != port->delayed_state) + tcpm_set_state(port, SNK_TRY_WAIT, 0); + break; + case SNK_TRYWAIT_VBUS: + tcpm_set_state(port, SNK_TRYWAIT, 0); + break; + + case SNK_ATTACH_WAIT: + tcpm_set_state(port, SNK_UNATTACHED, 0); + break; + + case SNK_NEGOTIATE_CAPABILITIES: + break; + + case PR_SWAP_SRC_SNK_TRANSITION_OFF: + tcpm_set_state(port, PR_SWAP_SRC_SNK_SOURCE_OFF, 0); + break; + + case PR_SWAP_SNK_SRC_SINK_OFF: + /* Do nothing, expected */ + break; + + case ERROR_RECOVERY_WAIT_OFF: + tcpm_set_state(port, + port->pwr_role == TYPEC_SOURCE ? + SRC_UNATTACHED : SNK_UNATTACHED, + 0); + break; + + default: + if (port->pwr_role == TYPEC_SINK && + port->attached) + tcpm_set_state(port, SNK_UNATTACHED, 0); + break; + } +} + +static void _tcpm_pd_hard_reset(struct tcpm_port *port) +{ + tcpm_log_force(port, "Received hard reset"); + /* + * If we keep receiving hard reset requests, executing the hard reset + * must have failed. Revert to error recovery if that happens. + */ + tcpm_set_state(port, + port->hard_reset_count < PD_N_HARD_RESET_COUNT ? + HARD_RESET_START : ERROR_RECOVERY, + 0); +} + +static void tcpm_pd_event_handler(struct work_struct *work) +{ + struct tcpm_port *port = container_of(work, struct tcpm_port, + event_work); + u32 events; + + mutex_lock(&port->lock); + + spin_lock(&port->pd_event_lock); + while (port->pd_events) { + events = port->pd_events; + port->pd_events = 0; + spin_unlock(&port->pd_event_lock); + if (events & TCPM_RESET_EVENT) + _tcpm_pd_hard_reset(port); + if (events & TCPM_VBUS_EVENT) { + bool vbus; + + vbus = port->tcpc->get_vbus(port->tcpc); + if (vbus) + _tcpm_pd_vbus_on(port); + else + _tcpm_pd_vbus_off(port); + } + if (events & TCPM_CC_EVENT) { + enum typec_cc_status cc1, cc2; + + if (port->tcpc->get_cc(port->tcpc, &cc1, &cc2) == 0) + _tcpm_cc_change(port, cc1, cc2); + } + spin_lock(&port->pd_event_lock); + } + spin_unlock(&port->pd_event_lock); + mutex_unlock(&port->lock); +} + +void tcpm_cc_change(struct tcpm_port *port) +{ + spin_lock(&port->pd_event_lock); + port->pd_events |= TCPM_CC_EVENT; + spin_unlock(&port->pd_event_lock); + queue_work(port->wq, &port->event_work); +} +EXPORT_SYMBOL_GPL(tcpm_cc_change); + +void tcpm_vbus_change(struct tcpm_port *port) +{ + spin_lock(&port->pd_event_lock); + port->pd_events |= TCPM_VBUS_EVENT; + spin_unlock(&port->pd_event_lock); + queue_work(port->wq, &port->event_work); +} +EXPORT_SYMBOL_GPL(tcpm_vbus_change); + +void tcpm_pd_hard_reset(struct tcpm_port *port) +{ + spin_lock(&port->pd_event_lock); + port->pd_events = TCPM_RESET_EVENT; + spin_unlock(&port->pd_event_lock); + queue_work(port->wq, &port->event_work); +} +EXPORT_SYMBOL_GPL(tcpm_pd_hard_reset); + +static int tcpm_dr_set(const struct typec_capability *cap, + enum typec_data_role data) +{ + struct tcpm_port *port = typec_cap_to_tcpm(cap); + int ret; + + mutex_lock(&port->swap_lock); + mutex_lock(&port->lock); + + if (port->typec_caps.type != TYPEC_PORT_DRP || !port->pd_capable) { + ret = -EINVAL; + goto port_unlock; + } + if (port->state != SRC_READY && port->state != SNK_READY) { + ret = -EAGAIN; + goto port_unlock; + } + + if (port->data_role == data) { + ret = 0; + goto port_unlock; + } + + /* + * XXX + * 6.3.9: If an alternate mode is active, a request to swap + * alternate modes shall trigger a port reset. + * Reject data role swap request in this case. + */ + + port->swap_status = 0; + port->swap_pending = true; + reinit_completion(&port->swap_complete); + tcpm_set_state(port, DR_SWAP_SEND, 0); + mutex_unlock(&port->lock); + + wait_for_completion(&port->swap_complete); + + ret = port->swap_status; + goto swap_unlock; + +port_unlock: + mutex_unlock(&port->lock); +swap_unlock: + mutex_unlock(&port->swap_lock); + return ret; +} + +static int tcpm_pr_set(const struct typec_capability *cap, + enum typec_role role) +{ + struct tcpm_port *port = typec_cap_to_tcpm(cap); + int ret; + + mutex_lock(&port->swap_lock); + mutex_lock(&port->lock); + + if (port->typec_caps.type != TYPEC_PORT_DRP) { + ret = -EINVAL; + goto port_unlock; + } + if (port->state != SRC_READY && port->state != SNK_READY) { + ret = -EAGAIN; + goto port_unlock; + } + + if (role == port->pwr_role) { + ret = 0; + goto port_unlock; + } + + if (!port->pd_capable) { + /* + * If the partner is not PD capable, reset the port to + * trigger a role change. This can only work if a preferred + * role is configured, and if it matches the requested role. + */ + if (port->try_role == TYPEC_NO_PREFERRED_ROLE || + port->try_role == port->pwr_role) { + ret = -EINVAL; + goto port_unlock; + } + tcpm_set_state(port, HARD_RESET_SEND, 0); + ret = 0; + goto port_unlock; + } + + port->swap_status = 0; + port->swap_pending = true; + reinit_completion(&port->swap_complete); + tcpm_set_state(port, PR_SWAP_SEND, 0); + mutex_unlock(&port->lock); + + wait_for_completion(&port->swap_complete); + + ret = port->swap_status; + goto swap_unlock; + +port_unlock: + mutex_unlock(&port->lock); +swap_unlock: + mutex_unlock(&port->swap_lock); + return ret; +} + +static int tcpm_vconn_set(const struct typec_capability *cap, + enum typec_role role) +{ + struct tcpm_port *port = typec_cap_to_tcpm(cap); + int ret; + + mutex_lock(&port->swap_lock); + mutex_lock(&port->lock); + + if (port->state != SRC_READY && port->state != SNK_READY) { + ret = -EAGAIN; + goto port_unlock; + } + + if (role == port->vconn_role) { + ret = 0; + goto port_unlock; + } + + port->swap_status = 0; + port->swap_pending = true; + reinit_completion(&port->swap_complete); + tcpm_set_state(port, VCONN_SWAP_SEND, 0); + mutex_unlock(&port->lock); + + wait_for_completion(&port->swap_complete); + + ret = port->swap_status; + goto swap_unlock; + +port_unlock: + mutex_unlock(&port->lock); +swap_unlock: + mutex_unlock(&port->swap_lock); + return ret; +} + +static int tcpm_try_role(const struct typec_capability *cap, int role) +{ + struct tcpm_port *port = typec_cap_to_tcpm(cap); + struct tcpc_dev *tcpc = port->tcpc; + int ret = 0; + + mutex_lock(&port->lock); + if (tcpc->try_role) + ret = tcpc->try_role(tcpc, role); + if (!ret && !tcpc->config->try_role_hw) + port->try_role = role; + port->try_src_count = 0; + port->try_snk_count = 0; + mutex_unlock(&port->lock); + + return ret; +} + +static void tcpm_init(struct tcpm_port *port) +{ + enum typec_cc_status cc1, cc2; + + port->tcpc->init(port->tcpc); + + tcpm_reset_port(port); + + /* + * XXX + * Should possibly wait for VBUS to settle if it was enabled locally + * since tcpm_reset_port() will disable VBUS. + */ + port->vbus_present = port->tcpc->get_vbus(port->tcpc); + if (port->vbus_present) + port->vbus_never_low = true; + + tcpm_set_state(port, tcpm_default_state(port), 0); + + if (port->tcpc->get_cc(port->tcpc, &cc1, &cc2) == 0) + _tcpm_cc_change(port, cc1, cc2); + + /* + * Some adapters need a clean slate at startup, and won't recover + * otherwise. So do not try to be fancy and force a clean disconnect. + */ + tcpm_set_state(port, ERROR_RECOVERY, 0); +} + +void tcpm_tcpc_reset(struct tcpm_port *port) +{ + mutex_lock(&port->lock); + /* XXX: Maintain PD connection if possible? */ + tcpm_init(port); + mutex_unlock(&port->lock); +} +EXPORT_SYMBOL_GPL(tcpm_tcpc_reset); + +static int tcpm_copy_pdos(u32 *dest_pdo, const u32 *src_pdo, + unsigned int nr_pdo) +{ + unsigned int i; + + if (nr_pdo > PDO_MAX_OBJECTS) + nr_pdo = PDO_MAX_OBJECTS; + + for (i = 0; i < nr_pdo; i++) + dest_pdo[i] = src_pdo[i]; + + return nr_pdo; +} + +void tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo, + unsigned int nr_pdo) +{ + mutex_lock(&port->lock); + port->nr_src_pdo = tcpm_copy_pdos(port->src_pdo, pdo, nr_pdo); + switch (port->state) { + case SRC_UNATTACHED: + case SRC_ATTACH_WAIT: + case SRC_TRYWAIT: + tcpm_set_cc(port, tcpm_rp_cc(port)); + break; + case SRC_SEND_CAPABILITIES: + case SRC_NEGOTIATE_CAPABILITIES: + case SRC_READY: + case SRC_WAIT_NEW_CAPABILITIES: + tcpm_set_cc(port, tcpm_rp_cc(port)); + tcpm_set_state(port, SRC_SEND_CAPABILITIES, 0); + break; + default: + break; + } + mutex_unlock(&port->lock); +} +EXPORT_SYMBOL_GPL(tcpm_update_source_capabilities); + +void tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo, + unsigned int nr_pdo, + unsigned int max_snk_mv, + unsigned int max_snk_ma, + unsigned int max_snk_mw, + unsigned int operating_snk_mw) +{ + mutex_lock(&port->lock); + port->nr_snk_pdo = tcpm_copy_pdos(port->snk_pdo, pdo, nr_pdo); + port->max_snk_mv = max_snk_mv; + port->max_snk_ma = max_snk_ma; + port->max_snk_mw = max_snk_mw; + port->operating_snk_mw = operating_snk_mw; + + switch (port->state) { + case SNK_NEGOTIATE_CAPABILITIES: + case SNK_READY: + case SNK_TRANSITION_SINK: + case SNK_TRANSITION_SINK_VBUS: + tcpm_set_state(port, SNK_NEGOTIATE_CAPABILITIES, 0); + break; + default: + break; + } + mutex_unlock(&port->lock); +} +EXPORT_SYMBOL_GPL(tcpm_update_sink_capabilities); + +struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc) +{ + struct tcpm_port *port; + int i, err; + + if (!dev || !tcpc || !tcpc->config || + !tcpc->get_vbus || !tcpc->set_cc || !tcpc->get_cc || + !tcpc->set_polarity || !tcpc->set_vconn || !tcpc->set_vbus || + !tcpc->set_pd_rx || !tcpc->set_roles || !tcpc->pd_transmit) + return ERR_PTR(-EINVAL); + + port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL); + if (!port) + return ERR_PTR(-ENOMEM); + + port->dev = dev; + port->tcpc = tcpc; + + mutex_init(&port->lock); + mutex_init(&port->swap_lock); + + port->wq = create_singlethread_workqueue(dev_name(dev)); + if (!port->wq) + return ERR_PTR(-ENOMEM); + INIT_DELAYED_WORK(&port->state_machine, tcpm_state_machine_work); + INIT_DELAYED_WORK(&port->vdm_state_machine, vdm_state_machine_work); + INIT_WORK(&port->event_work, tcpm_pd_event_handler); + + spin_lock_init(&port->pd_event_lock); + + init_completion(&port->tx_complete); + init_completion(&port->swap_complete); + + port->nr_src_pdo = tcpm_copy_pdos(port->src_pdo, tcpc->config->src_pdo, + tcpc->config->nr_src_pdo); + port->nr_snk_pdo = tcpm_copy_pdos(port->snk_pdo, tcpc->config->snk_pdo, + tcpc->config->nr_snk_pdo); + + port->max_snk_mv = tcpc->config->max_snk_mv; + port->max_snk_ma = tcpc->config->max_snk_ma; + port->max_snk_mw = tcpc->config->max_snk_mw; + port->operating_snk_mw = tcpc->config->operating_snk_mw; + if (!tcpc->config->try_role_hw) + port->try_role = tcpc->config->default_role; + else + port->try_role = TYPEC_NO_PREFERRED_ROLE; + + port->typec_caps.prefer_role = tcpc->config->default_role; + port->typec_caps.type = tcpc->config->type; + port->typec_caps.revision = 0x0120; /* Type-C spec release 1.2 */ + port->typec_caps.pd_revision = 0x0200; /* USB-PD spec release 2.0 */ + port->typec_caps.dr_set = tcpm_dr_set; + port->typec_caps.pr_set = tcpm_pr_set; + port->typec_caps.vconn_set = tcpm_vconn_set; + port->typec_caps.try_role = tcpm_try_role; + + port->partner_desc.identity = &port->partner_ident; + + /* + * TODO: + * - alt_modes, set_alt_mode + * - {debug,audio}_accessory + */ + + port->typec_port = typec_register_port(port->dev, &port->typec_caps); + if (!port->typec_port) { + err = -ENOMEM; + goto out_destroy_wq; + } + + if (tcpc->config->alt_modes) { + struct typec_altmode_desc *paltmode = tcpc->config->alt_modes; + + i = 0; + while (paltmode->svid && i < ARRAY_SIZE(port->port_altmode)) { + port->port_altmode[i] = + typec_port_register_altmode(port->typec_port, + paltmode); + if (!port->port_altmode[i]) { + tcpm_log(port, + "%s: failed to register port alternate mode 0x%x", + dev_name(dev), paltmode->svid); + break; + } + i++; + paltmode++; + } + } + + tcpm_debugfs_init(port); + mutex_lock(&port->lock); + tcpm_init(port); + mutex_unlock(&port->lock); + + tcpm_log(port, "%s: registered", dev_name(dev)); + return port; + +out_destroy_wq: + destroy_workqueue(port->wq); + return ERR_PTR(err); +} +EXPORT_SYMBOL_GPL(tcpm_register_port); + +void tcpm_unregister_port(struct tcpm_port *port) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(port->port_altmode); i++) + typec_unregister_altmode(port->port_altmode[i]); + typec_unregister_port(port->typec_port); + tcpm_debugfs_exit(port); + destroy_workqueue(port->wq); +} +EXPORT_SYMBOL_GPL(tcpm_unregister_port); + +MODULE_AUTHOR("Guenter Roeck <groeck@chromium.org>"); +MODULE_DESCRIPTION("USB Type-C Port Manager"); +MODULE_LICENSE("GPL"); diff --git a/drivers/staging/typec/tcpm.h b/drivers/staging/typec/tcpm.h new file mode 100644 index 000000000000..969b365e6549 --- /dev/null +++ b/drivers/staging/typec/tcpm.h @@ -0,0 +1,150 @@ +/* + * Copyright 2015-2017 Google, Inc + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ + +#ifndef __LINUX_USB_TCPM_H +#define __LINUX_USB_TCPM_H + +#include <linux/bitops.h> +#include <linux/usb/typec.h> +#include "pd.h" + +enum typec_cc_status { + TYPEC_CC_OPEN, + TYPEC_CC_RA, + TYPEC_CC_RD, + TYPEC_CC_RP_DEF, + TYPEC_CC_RP_1_5, + TYPEC_CC_RP_3_0, +}; + +enum typec_cc_polarity { + TYPEC_POLARITY_CC1, + TYPEC_POLARITY_CC2, +}; + +/* Time to wait for TCPC to complete transmit */ +#define PD_T_TCPC_TX_TIMEOUT 100 + +enum tcpm_transmit_status { + TCPC_TX_SUCCESS = 0, + TCPC_TX_DISCARDED = 1, + TCPC_TX_FAILED = 2, +}; + +enum tcpm_transmit_type { + TCPC_TX_SOP = 0, + TCPC_TX_SOP_PRIME = 1, + TCPC_TX_SOP_PRIME_PRIME = 2, + TCPC_TX_SOP_DEBUG_PRIME = 3, + TCPC_TX_SOP_DEBUG_PRIME_PRIME = 4, + TCPC_TX_HARD_RESET = 5, + TCPC_TX_CABLE_RESET = 6, + TCPC_TX_BIST_MODE_2 = 7 +}; + +struct tcpc_config { + const u32 *src_pdo; + unsigned int nr_src_pdo; + + const u32 *snk_pdo; + unsigned int nr_snk_pdo; + + unsigned int max_snk_mv; + unsigned int max_snk_ma; + unsigned int max_snk_mw; + unsigned int operating_snk_mw; + + enum typec_port_type type; + enum typec_role default_role; + bool try_role_hw; /* try.{src,snk} implemented in hardware */ + + struct typec_altmode_desc *alt_modes; +}; + +enum tcpc_usb_switch { + TCPC_USB_SWITCH_CONNECT, + TCPC_USB_SWITCH_DISCONNECT, + TCPC_USB_SWITCH_RESTORE, /* TODO FIXME */ +}; + +/* Mux state attributes */ +#define TCPC_MUX_USB_ENABLED BIT(0) /* USB enabled */ +#define TCPC_MUX_DP_ENABLED BIT(1) /* DP enabled */ +#define TCPC_MUX_POLARITY_INVERTED BIT(2) /* Polarity inverted */ + +/* Mux modes, decoded to attributes */ +enum tcpc_mux_mode { + TYPEC_MUX_NONE = 0, /* Open switch */ + TYPEC_MUX_USB = TCPC_MUX_USB_ENABLED, /* USB only */ + TYPEC_MUX_DP = TCPC_MUX_DP_ENABLED, /* DP only */ + TYPEC_MUX_DOCK = TCPC_MUX_USB_ENABLED | /* Both USB and DP */ + TCPC_MUX_DP_ENABLED, +}; + +struct tcpc_mux_dev { + int (*set)(struct tcpc_mux_dev *dev, enum tcpc_mux_mode mux_mode, + enum tcpc_usb_switch usb_config, + enum typec_cc_polarity polarity); + bool dfp_only; + void *priv_data; +}; + +struct tcpc_dev { + const struct tcpc_config *config; + + int (*init)(struct tcpc_dev *dev); + int (*get_vbus)(struct tcpc_dev *dev); + int (*set_cc)(struct tcpc_dev *dev, enum typec_cc_status cc); + int (*get_cc)(struct tcpc_dev *dev, enum typec_cc_status *cc1, + enum typec_cc_status *cc2); + int (*set_polarity)(struct tcpc_dev *dev, + enum typec_cc_polarity polarity); + int (*set_vconn)(struct tcpc_dev *dev, bool on); + int (*set_vbus)(struct tcpc_dev *dev, bool on, bool charge); + int (*set_current_limit)(struct tcpc_dev *dev, u32 max_ma, u32 mv); + int (*set_pd_rx)(struct tcpc_dev *dev, bool on); + int (*set_roles)(struct tcpc_dev *dev, bool attached, + enum typec_role role, enum typec_data_role data); + int (*start_drp_toggling)(struct tcpc_dev *dev, + enum typec_cc_status cc); + int (*try_role)(struct tcpc_dev *dev, int role); + int (*pd_transmit)(struct tcpc_dev *dev, enum tcpm_transmit_type type, + const struct pd_message *msg); + struct tcpc_mux_dev *mux; +}; + +struct tcpm_port; + +struct tcpm_port *tcpm_register_port(struct device *dev, struct tcpc_dev *tcpc); +void tcpm_unregister_port(struct tcpm_port *port); + +void tcpm_update_source_capabilities(struct tcpm_port *port, const u32 *pdo, + unsigned int nr_pdo); +void tcpm_update_sink_capabilities(struct tcpm_port *port, const u32 *pdo, + unsigned int nr_pdo, + unsigned int max_snk_mv, + unsigned int max_snk_ma, + unsigned int max_snk_mw, + unsigned int operating_snk_mw); + +void tcpm_vbus_change(struct tcpm_port *port); +void tcpm_cc_change(struct tcpm_port *port); +void tcpm_pd_receive(struct tcpm_port *port, + const struct pd_message *msg); +void tcpm_pd_transmit_complete(struct tcpm_port *port, + enum tcpm_transmit_status status); +void tcpm_pd_hard_reset(struct tcpm_port *port); +void tcpm_tcpc_reset(struct tcpm_port *port); + +#endif /* __LINUX_USB_TCPM_H */ diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index fbe493d44e81..939a63bca82f 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -35,7 +35,6 @@ config USB_COMMON config USB_ARCH_HAS_HCD def_bool y -# ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. config USB tristate "Support for Host-side USB" depends on USB_ARCH_HAS_HCD @@ -73,6 +72,17 @@ config USB To compile this driver as a module, choose M here: the module will be called usbcore. +config USB_PCI + bool "PCI based USB host interface" + depends on PCI + default y + ---help--- + A lot of embeded system SOC (e.g. freescale T2080) have both + PCI and USB modules. But USB module is controlled by registers + directly, it have no relationship with PCI module. + + When say N here it will not build PCI related code in USB driver. + if USB source "drivers/usb/core/Kconfig" @@ -152,6 +162,8 @@ source "drivers/usb/phy/Kconfig" source "drivers/usb/gadget/Kconfig" +source "drivers/usb/typec/Kconfig" + config USB_LED_TRIG bool "USB LED Triggers" depends on LEDS_CLASS && LEDS_TRIGGERS diff --git a/drivers/usb/Makefile b/drivers/usb/Makefile index 53d1356bbd06..9650b351c26c 100644 --- a/drivers/usb/Makefile +++ b/drivers/usb/Makefile @@ -14,7 +14,7 @@ obj-$(CONFIG_USB_ISP1760) += isp1760/ obj-$(CONFIG_USB_MON) += mon/ obj-$(CONFIG_USB_MTU3) += mtu3/ -obj-$(CONFIG_PCI) += host/ +obj-$(CONFIG_USB_PCI) += host/ obj-$(CONFIG_USB_EHCI_HCD) += host/ obj-$(CONFIG_USB_ISP116X_HCD) += host/ obj-$(CONFIG_USB_OHCI_HCD) += host/ @@ -62,3 +62,5 @@ obj-$(CONFIG_USB_GADGET) += gadget/ obj-$(CONFIG_USB_COMMON) += common/ obj-$(CONFIG_USBIP_CORE) += usbip/ + +obj-$(CONFIG_TYPEC) += typec/ diff --git a/drivers/usb/atm/cxacru.c b/drivers/usb/atm/cxacru.c index f9fe86b6f7b5..d65a64c29b85 100644 --- a/drivers/usb/atm/cxacru.c +++ b/drivers/usb/atm/cxacru.c @@ -474,7 +474,7 @@ static ssize_t cxacru_sysfs_store_adsl_config(struct device *dev, ret = sscanf(buf + pos, "%x=%x%n", &index, &value, &tmp); if (ret < 2) return -EINVAL; - if (index < 0 || index > 0x7f) + if (index > 0x7f) return -EINVAL; if (tmp < 0 || tmp > len - pos) return -EINVAL; diff --git a/drivers/usb/chipidea/Kconfig b/drivers/usb/chipidea/Kconfig index fc96f5cdcb5c..51f4157bbecf 100644 --- a/drivers/usb/chipidea/Kconfig +++ b/drivers/usb/chipidea/Kconfig @@ -20,7 +20,7 @@ config USB_CHIPIDEA_OF config USB_CHIPIDEA_PCI tristate - depends on PCI + depends on USB_PCI depends on NOP_USB_XCEIV default USB_CHIPIDEA diff --git a/drivers/usb/chipidea/ci.h b/drivers/usb/chipidea/ci.h index 59e22389c10b..6743f85b1b7a 100644 --- a/drivers/usb/chipidea/ci.h +++ b/drivers/usb/chipidea/ci.h @@ -177,6 +177,7 @@ struct hw_bank { * @td_pool: allocation pool for transfer descriptors * @gadget: device side representation for peripheral controller * @driver: gadget driver + * @resume_state: save the state of gadget suspend from * @hw_ep_max: total number of endpoints supported by hardware * @ci_hw_ep: array of endpoints * @ep0_dir: ep0 direction @@ -227,6 +228,7 @@ struct ci_hdrc { struct usb_gadget gadget; struct usb_gadget_driver *driver; + enum usb_device_state resume_state; unsigned hw_ep_max; struct ci_hw_ep ci_hw_ep[ENDPT_MAX]; u32 ep0_dir; diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 79ad8e91632e..9e217b1361ea 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -783,9 +783,6 @@ struct platform_device *ci_hdrc_add_device(struct device *dev, } pdev->dev.parent = dev; - pdev->dev.dma_mask = dev->dma_mask; - pdev->dev.dma_parms = dev->dma_parms; - dma_set_coherent_mask(&pdev->dev, dev->coherent_dma_mask); ret = platform_device_add_resources(pdev, res, nres); if (ret) @@ -841,6 +838,56 @@ static void ci_get_otg_capable(struct ci_hdrc *ci) } } +static ssize_t ci_role_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct ci_hdrc *ci = dev_get_drvdata(dev); + + return sprintf(buf, "%s\n", ci_role(ci)->name); +} + +static ssize_t ci_role_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t n) +{ + struct ci_hdrc *ci = dev_get_drvdata(dev); + enum ci_role role; + int ret; + + if (!(ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET])) { + dev_warn(dev, "Current configuration is not dual-role, quit\n"); + return -EPERM; + } + + for (role = CI_ROLE_HOST; role < CI_ROLE_END; role++) + if (!strncmp(buf, ci->roles[role]->name, + strlen(ci->roles[role]->name))) + break; + + if (role == CI_ROLE_END || role == ci->role) + return -EINVAL; + + pm_runtime_get_sync(dev); + disable_irq(ci->irq); + ci_role_stop(ci); + ret = ci_role_start(ci, role); + if (!ret && ci->role == CI_ROLE_GADGET) + ci_handle_vbus_change(ci); + enable_irq(ci->irq); + pm_runtime_put_sync(dev); + + return (ret == 0) ? n : ret; +} +static DEVICE_ATTR(role, 0644, ci_role_show, ci_role_store); + +static struct attribute *ci_attrs[] = { + &dev_attr_role.attr, + NULL, +}; + +static struct attribute_group ci_attr_group = { + .attrs = ci_attrs, +}; + static int ci_hdrc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; @@ -1007,11 +1054,18 @@ static int ci_hdrc_probe(struct platform_device *pdev) ci_hdrc_otg_fsm_start(ci); device_set_wakeup_capable(&pdev->dev, true); - ret = dbg_create_files(ci); - if (!ret) - return 0; + if (ret) + goto stop; + + ret = sysfs_create_group(&dev->kobj, &ci_attr_group); + if (ret) + goto remove_debug; + + return 0; +remove_debug: + dbg_remove_files(ci); stop: ci_role_destroy(ci); deinit_phy: @@ -1033,6 +1087,7 @@ static int ci_hdrc_remove(struct platform_device *pdev) } dbg_remove_files(ci); + sysfs_remove_group(&ci->dev->kobj, &ci_attr_group); ci_role_destroy(ci); ci_hdrc_enter_lpm(ci, true); ci_usb_phy_exit(ci); diff --git a/drivers/usb/chipidea/host.c b/drivers/usb/chipidea/host.c index 915f3e91586e..18cb8e46262d 100644 --- a/drivers/usb/chipidea/host.c +++ b/drivers/usb/chipidea/host.c @@ -123,7 +123,8 @@ static int host_start(struct ci_hdrc *ci) if (usb_disabled()) return -ENODEV; - hcd = usb_create_hcd(&ci_ehci_hc_driver, ci->dev, dev_name(ci->dev)); + hcd = __usb_create_hcd(&ci_ehci_hc_driver, ci->dev->parent, + ci->dev, dev_name(ci->dev), NULL); if (!hcd) return -ENOMEM; diff --git a/drivers/usb/chipidea/udc.c b/drivers/usb/chipidea/udc.c index f88e9157fad0..56d2d3213076 100644 --- a/drivers/usb/chipidea/udc.c +++ b/drivers/usb/chipidea/udc.c @@ -423,7 +423,8 @@ static int _hardware_enqueue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) hwreq->req.status = -EALREADY; - ret = usb_gadget_map_request(&ci->gadget, &hwreq->req, hwep->dir); + ret = usb_gadget_map_request_by_dev(ci->dev->parent, + &hwreq->req, hwep->dir); if (ret) return ret; @@ -603,7 +604,8 @@ static int _hardware_dequeue(struct ci_hw_ep *hwep, struct ci_hw_req *hwreq) list_del_init(&node->td); } - usb_gadget_unmap_request(&hwep->ci->gadget, &hwreq->req, hwep->dir); + usb_gadget_unmap_request_by_dev(hwep->ci->dev->parent, + &hwreq->req, hwep->dir); hwreq->req.actual += actual; @@ -1845,27 +1847,32 @@ static irqreturn_t udc_irq(struct ci_hdrc *ci) if (USBi_PCI & intr) { ci->gadget.speed = hw_port_is_high_speed(ci) ? USB_SPEED_HIGH : USB_SPEED_FULL; - if (ci->suspended && ci->driver->resume) { - spin_unlock(&ci->lock); - ci->driver->resume(&ci->gadget); - spin_lock(&ci->lock); + if (ci->suspended) { + if (ci->driver->resume) { + spin_unlock(&ci->lock); + ci->driver->resume(&ci->gadget); + spin_lock(&ci->lock); + } ci->suspended = 0; + usb_gadget_set_state(&ci->gadget, + ci->resume_state); } } if (USBi_UI & intr) isr_tr_complete_handler(ci); - if (USBi_SLI & intr) { + if ((USBi_SLI & intr) && !(ci->suspended)) { + ci->suspended = 1; + ci->resume_state = ci->gadget.state; if (ci->gadget.speed != USB_SPEED_UNKNOWN && ci->driver->suspend) { - ci->suspended = 1; spin_unlock(&ci->lock); ci->driver->suspend(&ci->gadget); - usb_gadget_set_state(&ci->gadget, - USB_STATE_SUSPENDED); spin_lock(&ci->lock); } + usb_gadget_set_state(&ci->gadget, + USB_STATE_SUSPENDED); } retval = IRQ_HANDLED; } else { @@ -1899,13 +1906,13 @@ static int udc_start(struct ci_hdrc *ci) INIT_LIST_HEAD(&ci->gadget.ep_list); /* alloc resources */ - ci->qh_pool = dma_pool_create("ci_hw_qh", dev, + ci->qh_pool = dma_pool_create("ci_hw_qh", dev->parent, sizeof(struct ci_hw_qh), 64, CI_HDRC_PAGE_SIZE); if (ci->qh_pool == NULL) return -ENOMEM; - ci->td_pool = dma_pool_create("ci_hw_td", dev, + ci->td_pool = dma_pool_create("ci_hw_td", dev->parent, sizeof(struct ci_hw_td), 64, CI_HDRC_PAGE_SIZE); if (ci->td_pool == NULL) { @@ -1973,6 +1980,8 @@ static void udc_id_switch_for_host(struct ci_hdrc *ci) */ if (ci->is_otg) hw_write_otgsc(ci, OTGSC_BSVIE | OTGSC_BSVIS, OTGSC_BSVIS); + + ci->vbus_active = 0; } /** diff --git a/drivers/usb/class/Kconfig b/drivers/usb/class/Kconfig index bb8b73682a70..971385fe9abc 100644 --- a/drivers/usb/class/Kconfig +++ b/drivers/usb/class/Kconfig @@ -12,7 +12,7 @@ config USB_ACM Please read <file:Documentation/usb/acm.txt> for details. If your modem only reports "Cls=ff(vend.)" in the descriptors in - /proc/bus/usb/devices, then your modem will not work with this + /sys/kernel/debug/usb/devices, then your modem will not work with this driver. To compile this driver as a module, choose M here: the diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index d5388938bc7a..5357d83bbda2 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -36,6 +36,7 @@ #include <linux/errno.h> #include <linux/init.h> #include <linux/slab.h> +#include <linux/log2.h> #include <linux/tty.h> #include <linux/serial.h> #include <linux/tty_driver.h> @@ -283,39 +284,13 @@ static DEVICE_ATTR(iCountryCodeRelDate, S_IRUGO, show_country_rel_date, NULL); * Interrupt handlers for various ACM device responses */ -/* control interface reports status changes with "interrupt" transfers */ -static void acm_ctrl_irq(struct urb *urb) +static void acm_process_notification(struct acm *acm, unsigned char *buf) { - struct acm *acm = urb->context; - struct usb_cdc_notification *dr = urb->transfer_buffer; - unsigned char *data; int newctrl; int difference; - int retval; - int status = urb->status; + struct usb_cdc_notification *dr = (struct usb_cdc_notification *)buf; + unsigned char *data = buf + sizeof(struct usb_cdc_notification); - switch (status) { - case 0: - /* success */ - break; - case -ECONNRESET: - case -ENOENT: - case -ESHUTDOWN: - /* this urb is terminated, clean up */ - dev_dbg(&acm->control->dev, - "%s - urb shutting down with status: %d\n", - __func__, status); - return; - default: - dev_dbg(&acm->control->dev, - "%s - nonzero urb status received: %d\n", - __func__, status); - goto exit; - } - - usb_mark_last_busy(acm->dev); - - data = (unsigned char *)(dr + 1); switch (dr->bNotificationType) { case USB_CDC_NOTIFY_NETWORK_CONNECTION: dev_dbg(&acm->control->dev, @@ -323,7 +298,15 @@ static void acm_ctrl_irq(struct urb *urb) break; case USB_CDC_NOTIFY_SERIAL_STATE: + if (le16_to_cpu(dr->wLength) != 2) { + dev_dbg(&acm->control->dev, + "%s - malformed serial state\n", __func__); + break; + } + newctrl = get_unaligned_le16(data); + dev_dbg(&acm->control->dev, + "%s - serial state: 0x%x\n", __func__, newctrl); if (!acm->clocal && (acm->ctrlin & ~newctrl & ACM_CTRL_DCD)) { dev_dbg(&acm->control->dev, @@ -359,13 +342,86 @@ static void acm_ctrl_irq(struct urb *urb) default: dev_dbg(&acm->control->dev, - "%s - unknown notification %d received: index %d " - "len %d data0 %d data1 %d\n", + "%s - unknown notification %d received: index %d len %d\n", __func__, - dr->bNotificationType, dr->wIndex, - dr->wLength, data[0], data[1]); + dr->bNotificationType, dr->wIndex, dr->wLength); + } +} + +/* control interface reports status changes with "interrupt" transfers */ +static void acm_ctrl_irq(struct urb *urb) +{ + struct acm *acm = urb->context; + struct usb_cdc_notification *dr = urb->transfer_buffer; + unsigned int current_size = urb->actual_length; + unsigned int expected_size, copy_size, alloc_size; + int retval; + int status = urb->status; + + switch (status) { + case 0: + /* success */ break; + case -ECONNRESET: + case -ENOENT: + case -ESHUTDOWN: + /* this urb is terminated, clean up */ + acm->nb_index = 0; + dev_dbg(&acm->control->dev, + "%s - urb shutting down with status: %d\n", + __func__, status); + return; + default: + dev_dbg(&acm->control->dev, + "%s - nonzero urb status received: %d\n", + __func__, status); + goto exit; + } + + usb_mark_last_busy(acm->dev); + + if (acm->nb_index) + dr = (struct usb_cdc_notification *)acm->notification_buffer; + + /* size = notification-header + (optional) data */ + expected_size = sizeof(struct usb_cdc_notification) + + le16_to_cpu(dr->wLength); + + if (current_size < expected_size) { + /* notification is transmitted fragmented, reassemble */ + if (acm->nb_size < expected_size) { + if (acm->nb_size) { + kfree(acm->notification_buffer); + acm->nb_size = 0; + } + alloc_size = roundup_pow_of_two(expected_size); + /* + * kmalloc ensures a valid notification_buffer after a + * use of kfree in case the previous allocation was too + * small. Final freeing is done on disconnect. + */ + acm->notification_buffer = + kmalloc(alloc_size, GFP_ATOMIC); + if (!acm->notification_buffer) + goto exit; + acm->nb_size = alloc_size; + } + + copy_size = min(current_size, + expected_size - acm->nb_index); + + memcpy(&acm->notification_buffer[acm->nb_index], + urb->transfer_buffer, copy_size); + acm->nb_index += copy_size; + current_size = acm->nb_index; + } + + if (current_size >= expected_size) { + /* notification complete */ + acm_process_notification(acm, (unsigned char *)dr); + acm->nb_index = 0; } + exit: retval = usb_submit_urb(urb, GFP_ATOMIC); if (retval && retval != -EPERM) @@ -1174,6 +1230,7 @@ static int acm_probe(struct usb_interface *intf, int combined_interfaces = 0; struct device *tty_dev; int rv = -ENOMEM; + int res; /* normal quirks */ quirks = (unsigned long)id->driver_info; @@ -1274,23 +1331,12 @@ static int acm_probe(struct usb_interface *intf, return -EINVAL; } look_for_collapsed_interface: - for (i = 0; i < 3; i++) { - struct usb_endpoint_descriptor *ep; - ep = &data_interface->cur_altsetting->endpoint[i].desc; - - if (usb_endpoint_is_int_in(ep)) - epctrl = ep; - else if (usb_endpoint_is_bulk_out(ep)) - epwrite = ep; - else if (usb_endpoint_is_bulk_in(ep)) - epread = ep; - else - return -EINVAL; - } - if (!epctrl || !epread || !epwrite) - return -ENODEV; - else - goto made_compressed_probe; + res = usb_find_common_endpoints(data_interface->cur_altsetting, + &epread, &epwrite, &epctrl, NULL); + if (res) + return res; + + goto made_compressed_probe; } skip_normal_probe: @@ -1488,6 +1534,9 @@ skip_countries: epctrl->bInterval ? epctrl->bInterval : 16); acm->ctrlurb->transfer_flags |= URB_NO_TRANSFER_DMA_MAP; acm->ctrlurb->transfer_dma = acm->ctrl_dma; + acm->notification_buffer = NULL; + acm->nb_index = 0; + acm->nb_size = 0; dev_info(&intf->dev, "ttyACM%d: USB ACM device\n", minor); @@ -1580,6 +1629,8 @@ static void acm_disconnect(struct usb_interface *intf) usb_free_coherent(acm->dev, acm->ctrlsize, acm->ctrl_buffer, acm->ctrl_dma); acm_read_buffers_free(acm); + kfree(acm->notification_buffer); + if (!acm->combined_interfaces) usb_driver_release_interface(&acm_driver, intf == acm->control ? acm->data : acm->control); diff --git a/drivers/usb/class/cdc-acm.h b/drivers/usb/class/cdc-acm.h index c980f11cdf56..7a2b3deafc90 100644 --- a/drivers/usb/class/cdc-acm.h +++ b/drivers/usb/class/cdc-acm.h @@ -98,7 +98,9 @@ struct acm { struct acm_wb *putbuffer; /* for acm_tty_put_char() */ int rx_buflimit; spinlock_t read_lock; - int write_used; /* number of non-empty write buffers */ + u8 *notification_buffer; /* to reassemble fragmented notifications */ + unsigned int nb_index; + unsigned int nb_size; int transmitting; spinlock_t write_lock; struct mutex mutex; diff --git a/drivers/usb/class/cdc-wdm.c b/drivers/usb/class/cdc-wdm.c index 8fda45a45bd3..08669fee6d7f 100644 --- a/drivers/usb/class/cdc-wdm.c +++ b/drivers/usb/class/cdc-wdm.c @@ -58,7 +58,6 @@ MODULE_DEVICE_TABLE (usb, wdm_ids); #define WDM_SUSPENDING 8 #define WDM_RESETTING 9 #define WDM_OVERFLOW 10 -#define WDM_DRAIN_ON_OPEN 11 #define WDM_MAX 16 @@ -182,7 +181,7 @@ static void wdm_in_callback(struct urb *urb) "nonzero urb status received: -ESHUTDOWN\n"); goto skip_error; case -EPIPE: - dev_dbg(&desc->intf->dev, + dev_err(&desc->intf->dev, "nonzero urb status received: -EPIPE\n"); break; default: @@ -210,25 +209,6 @@ static void wdm_in_callback(struct urb *urb) desc->reslength = length; } } - - /* - * Handling devices with the WDM_DRAIN_ON_OPEN flag set: - * If desc->resp_count is unset, then the urb was submitted - * without a prior notification. If the device returned any - * data, then this implies that it had messages queued without - * notifying us. Continue reading until that queue is flushed. - */ - if (!desc->resp_count) { - if (!length) { - /* do not propagate the expected -EPIPE */ - desc->rerr = 0; - goto unlock; - } - dev_dbg(&desc->intf->dev, "got %d bytes without notification\n", length); - set_bit(WDM_RESPONDING, &desc->flags); - usb_submit_urb(desc->response, GFP_ATOMIC); - } - skip_error: set_bit(WDM_READ, &desc->flags); wake_up(&desc->wait); @@ -243,7 +223,6 @@ skip_error: service_outstanding_interrupt(desc); } -unlock: spin_unlock(&desc->iuspin); } @@ -686,17 +665,6 @@ static int wdm_open(struct inode *inode, struct file *file) dev_err(&desc->intf->dev, "Error submitting int urb - %d\n", rv); rv = usb_translate_errors(rv); - } else if (test_bit(WDM_DRAIN_ON_OPEN, &desc->flags)) { - /* - * Some devices keep pending messages queued - * without resending notifications. We must - * flush the message queue before we can - * assume a one-to-one relationship between - * notifications and messages in the queue - */ - dev_dbg(&desc->intf->dev, "draining queued data\n"); - set_bit(WDM_RESPONDING, &desc->flags); - rv = usb_submit_urb(desc->response, GFP_KERNEL); } } else { rv = 0; @@ -803,8 +771,7 @@ static void wdm_rxwork(struct work_struct *work) /* --- hotplug --- */ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor *ep, - u16 bufsize, int (*manage_power)(struct usb_interface *, int), - bool drain_on_open) + u16 bufsize, int (*manage_power)(struct usb_interface *, int)) { int rv = -ENOMEM; struct wdm_device *desc; @@ -891,68 +858,6 @@ static int wdm_create(struct usb_interface *intf, struct usb_endpoint_descriptor desc->manage_power = manage_power; - /* - * "drain_on_open" enables a hack to work around a firmware - * issue observed on network functions, in particular MBIM - * functions. - * - * Quoting section 7 of the CDC-WMC r1.1 specification: - * - * "The firmware shall interpret GetEncapsulatedResponse as a - * request to read response bytes. The firmware shall send - * the next wLength bytes from the response. The firmware - * shall allow the host to retrieve data using any number of - * GetEncapsulatedResponse requests. The firmware shall - * return a zero- length reply if there are no data bytes - * available. - * - * The firmware shall send ResponseAvailable notifications - * periodically, using any appropriate algorithm, to inform - * the host that there is data available in the reply - * buffer. The firmware is allowed to send ResponseAvailable - * notifications even if there is no data available, but - * this will obviously reduce overall performance." - * - * These requirements, although they make equally sense, are - * often not implemented by network functions. Some firmwares - * will queue data indefinitely, without ever resending a - * notification. The result is that the driver and firmware - * loses "syncronization" if the driver ever fails to respond - * to a single notification, something which easily can happen - * on release(). When this happens, the driver will appear to - * never receive notifications for the most current data. Each - * notification will only cause a single read, which returns - * the oldest data in the firmware's queue. - * - * The "drain_on_open" hack resolves the situation by draining - * data from the firmware until none is returned, without a - * prior notification. - * - * This will inevitably race with the firmware, risking that - * we read data from the device before handling the associated - * notification. To make things worse, some of the devices - * needing the hack do not implement the "return zero if no - * data is available" requirement either. Instead they return - * an error on the subsequent read in this case. This means - * that "winning" the race can cause an unexpected EIO to - * userspace. - * - * "winning" the race is more likely on resume() than on - * open(), and the unexpected error is more harmful in the - * middle of an open session. The hack is therefore only - * applied on open(), and not on resume() where it logically - * would be equally necessary. So we define open() as the only - * driver <-> device "syncronization point". Should we happen - * to lose a notification after open(), then syncronization - * will be lost until release() - * - * The hack should not be enabled for CDC WDM devices - * conforming to the CDC-WMC r1.1 specification. This is - * ensured by setting drain_on_open to false in wdm_probe(). - */ - if (drain_on_open) - set_bit(WDM_DRAIN_ON_OPEN, &desc->flags); - spin_lock(&wdm_device_list_lock); list_add(&desc->device_list, &wdm_device_list); spin_unlock(&wdm_device_list_lock); @@ -1006,7 +911,7 @@ static int wdm_probe(struct usb_interface *intf, const struct usb_device_id *id) goto err; ep = &iface->endpoint[0].desc; - rv = wdm_create(intf, ep, maxcom, &wdm_manage_power, false); + rv = wdm_create(intf, ep, maxcom, &wdm_manage_power); err: return rv; @@ -1038,7 +943,7 @@ struct usb_driver *usb_cdc_wdm_register(struct usb_interface *intf, { int rv = -EINVAL; - rv = wdm_create(intf, ep, bufsize, manage_power, true); + rv = wdm_create(intf, ep, bufsize, manage_power); if (rv < 0) goto err; diff --git a/drivers/usb/class/usblp.c b/drivers/usb/class/usblp.c index cc61055fb9be..fb87c17ed6fa 100644 --- a/drivers/usb/class/usblp.c +++ b/drivers/usb/class/usblp.c @@ -294,7 +294,7 @@ static int usblp_ctrl_msg(struct usblp *usblp, int request, int type, int dir, i /* * See the description for usblp_select_alts() below for the usage - * explanation. Look into your /proc/bus/usb/devices and dmesg in + * explanation. Look into your /sys/kernel/debug/usb/devices and dmesg in * case of any trouble. */ static int proto_bias = -1; @@ -1239,8 +1239,9 @@ static int usblp_select_alts(struct usblp *usblp) { struct usb_interface *if_alt; struct usb_host_interface *ifd; - struct usb_endpoint_descriptor *epd, *epwrite, *epread; - int p, i, e; + struct usb_endpoint_descriptor *epwrite, *epread; + int p, i; + int res; if_alt = usblp->intf; @@ -1260,31 +1261,21 @@ static int usblp_select_alts(struct usblp *usblp) ifd->desc.bInterfaceProtocol > USBLP_LAST_PROTOCOL) continue; - /* Look for bulk OUT and IN endpoints. */ - epwrite = epread = NULL; - for (e = 0; e < ifd->desc.bNumEndpoints; e++) { - epd = &ifd->endpoint[e].desc; - - if (usb_endpoint_is_bulk_out(epd)) - if (!epwrite) - epwrite = epd; - - if (usb_endpoint_is_bulk_in(epd)) - if (!epread) - epread = epd; + /* Look for the expected bulk endpoints. */ + if (ifd->desc.bInterfaceProtocol > 1) { + res = usb_find_common_endpoints(ifd, + &epread, &epwrite, NULL, NULL); + } else { + epread = NULL; + res = usb_find_bulk_out_endpoint(ifd, &epwrite); } /* Ignore buggy hardware without the right endpoints. */ - if (!epwrite || (ifd->desc.bInterfaceProtocol > 1 && !epread)) + if (res) continue; - /* - * Turn off reads for USB_CLASS_PRINTER/1/1 (unidirectional) - * interfaces and buggy bidirectional printers. - */ - if (ifd->desc.bInterfaceProtocol == 1) { - epread = NULL; - } else if (usblp->quirks & USBLP_QUIRK_BIDIR) { + /* Turn off reads for buggy bidirectional printers. */ + if (usblp->quirks & USBLP_QUIRK_BIDIR) { printk(KERN_INFO "usblp%d: Disabling reads from " "problematic bidirectional printer\n", usblp->minor); diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 8fb309a0ff6b..578f424decc2 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -1375,7 +1375,7 @@ static int usbtmc_probe(struct usb_interface *intf, { struct usbtmc_device_data *data; struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; + struct usb_endpoint_descriptor *bulk_in, *bulk_out, *int_in; int n; int retcode; @@ -1421,49 +1421,29 @@ static int usbtmc_probe(struct usb_interface *intf, iface_desc = data->intf->cur_altsetting; data->ifnum = iface_desc->desc.bInterfaceNumber; - /* Find bulk in endpoint */ - for (n = 0; n < iface_desc->desc.bNumEndpoints; n++) { - endpoint = &iface_desc->endpoint[n].desc; - - if (usb_endpoint_is_bulk_in(endpoint)) { - data->bulk_in = endpoint->bEndpointAddress; - dev_dbg(&intf->dev, "Found bulk in endpoint at %u\n", - data->bulk_in); - break; - } - } - - /* Find bulk out endpoint */ - for (n = 0; n < iface_desc->desc.bNumEndpoints; n++) { - endpoint = &iface_desc->endpoint[n].desc; - - if (usb_endpoint_is_bulk_out(endpoint)) { - data->bulk_out = endpoint->bEndpointAddress; - dev_dbg(&intf->dev, "Found Bulk out endpoint at %u\n", - data->bulk_out); - break; - } - } - - if (!data->bulk_out || !data->bulk_in) { + /* Find bulk endpoints */ + retcode = usb_find_common_endpoints(iface_desc, + &bulk_in, &bulk_out, NULL, NULL); + if (retcode) { dev_err(&intf->dev, "bulk endpoints not found\n"); - retcode = -ENODEV; goto err_put; } + data->bulk_in = bulk_in->bEndpointAddress; + dev_dbg(&intf->dev, "Found bulk in endpoint at %u\n", data->bulk_in); + + data->bulk_out = bulk_out->bEndpointAddress; + dev_dbg(&intf->dev, "Found Bulk out endpoint at %u\n", data->bulk_out); + /* Find int endpoint */ - for (n = 0; n < iface_desc->desc.bNumEndpoints; n++) { - endpoint = &iface_desc->endpoint[n].desc; - - if (usb_endpoint_is_int_in(endpoint)) { - data->iin_ep_present = 1; - data->iin_ep = endpoint->bEndpointAddress; - data->iin_wMaxPacketSize = usb_endpoint_maxp(endpoint); - data->iin_interval = endpoint->bInterval; - dev_dbg(&intf->dev, "Found Int in endpoint at %u\n", + retcode = usb_find_int_in_endpoint(iface_desc, &int_in); + if (!retcode) { + data->iin_ep_present = 1; + data->iin_ep = int_in->bEndpointAddress; + data->iin_wMaxPacketSize = usb_endpoint_maxp(int_in); + data->iin_interval = int_in->bInterval; + dev_dbg(&intf->dev, "Found Int in endpoint at %u\n", data->iin_ep); - break; - } } retcode = get_capabilities(data); diff --git a/drivers/usb/common/usb-otg-fsm.c b/drivers/usb/common/usb-otg-fsm.c index 2f537bbdda09..b8fe31e409a5 100644 --- a/drivers/usb/common/usb-otg-fsm.c +++ b/drivers/usb/common/usb-otg-fsm.c @@ -31,6 +31,13 @@ #include <linux/usb/otg.h> #include <linux/usb/otg-fsm.h> +#ifdef VERBOSE +#define VDBG(fmt, args...) pr_debug("[%s] " fmt, \ + __func__, ## args) +#else +#define VDBG(stuff...) do {} while (0) +#endif + /* Change USB protocol when there is a protocol change */ static int otg_set_protocol(struct otg_fsm *fsm, int protocol) { diff --git a/drivers/usb/core/Makefile b/drivers/usb/core/Makefile index b99b871c4b9d..250ec1d662d9 100644 --- a/drivers/usb/core/Makefile +++ b/drivers/usb/core/Makefile @@ -8,7 +8,7 @@ usbcore-y += devio.o notify.o generic.o quirks.o devices.o usbcore-y += port.o usbcore-$(CONFIG_OF) += of.o -usbcore-$(CONFIG_PCI) += hcd-pci.o +usbcore-$(CONFIG_USB_PCI) += hcd-pci.o usbcore-$(CONFIG_ACPI) += usb-acpi.o obj-$(CONFIG_USB) += usbcore.o diff --git a/drivers/usb/core/buffer.c b/drivers/usb/core/buffer.c index b9bf6e2eb6fe..b64568cf572c 100644 --- a/drivers/usb/core/buffer.c +++ b/drivers/usb/core/buffer.c @@ -66,7 +66,7 @@ int hcd_buffer_create(struct usb_hcd *hcd) int i, size; if (!IS_ENABLED(CONFIG_HAS_DMA) || - (!hcd->self.controller->dma_mask && + (!is_device_dma_capable(hcd->self.sysdev) && !(hcd->driver->flags & HCD_LOCAL_MEM))) return 0; @@ -75,7 +75,7 @@ int hcd_buffer_create(struct usb_hcd *hcd) if (!size) continue; snprintf(name, sizeof(name), "buffer-%d", size); - hcd->pool[i] = dma_pool_create(name, hcd->self.controller, + hcd->pool[i] = dma_pool_create(name, hcd->self.sysdev, size, size, 0); if (!hcd->pool[i]) { hcd_buffer_destroy(hcd); @@ -130,7 +130,7 @@ void *hcd_buffer_alloc( /* some USB hosts just use PIO */ if (!IS_ENABLED(CONFIG_HAS_DMA) || - (!bus->controller->dma_mask && + (!is_device_dma_capable(bus->sysdev) && !(hcd->driver->flags & HCD_LOCAL_MEM))) { *dma = ~(dma_addr_t) 0; return kmalloc(size, mem_flags); @@ -140,7 +140,7 @@ void *hcd_buffer_alloc( if (size <= pool_max[i]) return dma_pool_alloc(hcd->pool[i], mem_flags, dma); } - return dma_alloc_coherent(hcd->self.controller, size, dma, mem_flags); + return dma_alloc_coherent(hcd->self.sysdev, size, dma, mem_flags); } void hcd_buffer_free( @@ -157,7 +157,7 @@ void hcd_buffer_free( return; if (!IS_ENABLED(CONFIG_HAS_DMA) || - (!bus->controller->dma_mask && + (!is_device_dma_capable(bus->sysdev) && !(hcd->driver->flags & HCD_LOCAL_MEM))) { kfree(addr); return; @@ -169,5 +169,5 @@ void hcd_buffer_free( return; } } - dma_free_coherent(hcd->self.controller, size, addr, dma); + dma_free_coherent(hcd->self.sysdev, size, addr, dma); } diff --git a/drivers/usb/core/devices.c b/drivers/usb/core/devices.c index f2987ddb1cde..55dea2e7828f 100644 --- a/drivers/usb/core/devices.c +++ b/drivers/usb/core/devices.c @@ -24,7 +24,7 @@ * <mountpoint>/devices contains USB topology, device, config, class, * interface, & endpoint data. * - * I considered using /proc/bus/usb/devices/device# for each device + * I considered using /dev/bus/usb/device# for each device * as it is attached or detached, but I didn't like this for some * reason -- maybe it's just too deep of a directory structure. * I also don't like looking in multiple places to gather and view @@ -40,7 +40,7 @@ * Converted the whole proc stuff to real * read methods. Now not the whole device list needs to fit * into one page, only the device list for one bus. - * Added a poll method to /proc/bus/usb/devices, to wake + * Added a poll method to /sys/kernel/debug/usb/devices, to wake * up an eventual usbd * 2000-01-04: Thomas Sailer <sailer@ife.ee.ethz.ch> * Turned into its own filesystem diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index cdee5130638b..eb87a259d55c 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1331,6 +1331,24 @@ static int usb_suspend_both(struct usb_device *udev, pm_message_t msg) */ if (udev->parent && !PMSG_IS_AUTO(msg)) status = 0; + + /* + * If the device is inaccessible, don't try to resume + * suspended interfaces and just return the error. + */ + if (status && status != -EBUSY) { + int err; + u16 devstat; + + err = usb_get_status(udev, USB_RECIP_DEVICE, 0, + &devstat); + if (err) { + dev_err(&udev->dev, + "Failed to suspend device, error %d\n", + status); + goto done; + } + } } /* If the suspend failed, resume interfaces that did get suspended */ @@ -1763,6 +1781,9 @@ static int autosuspend_check(struct usb_device *udev) int w, i; struct usb_interface *intf; + if (udev->state == USB_STATE_NOTATTACHED) + return -ENODEV; + /* Fail if autosuspend is disabled, or any interfaces are in use, or * any interface drivers require remote wakeup but it isn't available. */ diff --git a/drivers/usb/core/file.c b/drivers/usb/core/file.c index e26bd5e773ad..87ad6b6bfee8 100644 --- a/drivers/usb/core/file.c +++ b/drivers/usb/core/file.c @@ -29,6 +29,7 @@ #define MAX_USB_MINORS 256 static const struct file_operations *usb_minors[MAX_USB_MINORS]; static DECLARE_RWSEM(minor_rwsem); +static DEFINE_MUTEX(init_usb_class_mutex); static int usb_open(struct inode *inode, struct file *file) { @@ -111,8 +112,9 @@ static void release_usb_class(struct kref *kref) static void destroy_usb_class(void) { - if (usb_class) - kref_put(&usb_class->kref, release_usb_class); + mutex_lock(&init_usb_class_mutex); + kref_put(&usb_class->kref, release_usb_class); + mutex_unlock(&init_usb_class_mutex); } int usb_major_init(void) @@ -173,7 +175,10 @@ int usb_register_dev(struct usb_interface *intf, if (intf->minor >= 0) return -EADDRINUSE; + mutex_lock(&init_usb_class_mutex); retval = init_usb_class(); + mutex_unlock(&init_usb_class_mutex); + if (retval) return retval; diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 79bdca5cb9c7..49550790a3cb 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -1076,6 +1076,7 @@ static void usb_deregister_bus (struct usb_bus *bus) static int register_root_hub(struct usb_hcd *hcd) { struct device *parent_dev = hcd->self.controller; + struct device *sysdev = hcd->self.sysdev; struct usb_device *usb_dev = hcd->self.root_hub; const int devnum = 1; int retval; @@ -1122,7 +1123,7 @@ static int register_root_hub(struct usb_hcd *hcd) /* Did the HC die before the root hub was registered? */ if (HCD_DEAD(hcd)) usb_hc_died (hcd); /* This time clean up */ - usb_dev->dev.of_node = parent_dev->of_node; + usb_dev->dev.of_node = sysdev->of_node; } mutex_unlock(&usb_bus_idr_lock); @@ -1435,7 +1436,7 @@ void usb_hcd_unmap_urb_setup_for_dma(struct usb_hcd *hcd, struct urb *urb) { if (IS_ENABLED(CONFIG_HAS_DMA) && (urb->transfer_flags & URB_SETUP_MAP_SINGLE)) - dma_unmap_single(hcd->self.controller, + dma_unmap_single(hcd->self.sysdev, urb->setup_dma, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); @@ -1468,19 +1469,19 @@ void usb_hcd_unmap_urb_for_dma(struct usb_hcd *hcd, struct urb *urb) dir = usb_urb_dir_in(urb) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; if (IS_ENABLED(CONFIG_HAS_DMA) && (urb->transfer_flags & URB_DMA_MAP_SG)) - dma_unmap_sg(hcd->self.controller, + dma_unmap_sg(hcd->self.sysdev, urb->sg, urb->num_sgs, dir); else if (IS_ENABLED(CONFIG_HAS_DMA) && (urb->transfer_flags & URB_DMA_MAP_PAGE)) - dma_unmap_page(hcd->self.controller, + dma_unmap_page(hcd->self.sysdev, urb->transfer_dma, urb->transfer_buffer_length, dir); else if (IS_ENABLED(CONFIG_HAS_DMA) && (urb->transfer_flags & URB_DMA_MAP_SINGLE)) - dma_unmap_single(hcd->self.controller, + dma_unmap_single(hcd->self.sysdev, urb->transfer_dma, urb->transfer_buffer_length, dir); @@ -1523,11 +1524,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, return ret; if (IS_ENABLED(CONFIG_HAS_DMA) && hcd->self.uses_dma) { urb->setup_dma = dma_map_single( - hcd->self.controller, + hcd->self.sysdev, urb->setup_packet, sizeof(struct usb_ctrlrequest), DMA_TO_DEVICE); - if (dma_mapping_error(hcd->self.controller, + if (dma_mapping_error(hcd->self.sysdev, urb->setup_dma)) return -EAGAIN; urb->transfer_flags |= URB_SETUP_MAP_SINGLE; @@ -1558,7 +1559,7 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, } n = dma_map_sg( - hcd->self.controller, + hcd->self.sysdev, urb->sg, urb->num_sgs, dir); @@ -1573,12 +1574,12 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, } else if (urb->sg) { struct scatterlist *sg = urb->sg; urb->transfer_dma = dma_map_page( - hcd->self.controller, + hcd->self.sysdev, sg_page(sg), sg->offset, urb->transfer_buffer_length, dir); - if (dma_mapping_error(hcd->self.controller, + if (dma_mapping_error(hcd->self.sysdev, urb->transfer_dma)) ret = -EAGAIN; else @@ -1588,11 +1589,11 @@ int usb_hcd_map_urb_for_dma(struct usb_hcd *hcd, struct urb *urb, ret = -EAGAIN; } else { urb->transfer_dma = dma_map_single( - hcd->self.controller, + hcd->self.sysdev, urb->transfer_buffer, urb->transfer_buffer_length, dir); - if (dma_mapping_error(hcd->self.controller, + if (dma_mapping_error(hcd->self.sysdev, urb->transfer_dma)) ret = -EAGAIN; else @@ -2498,24 +2499,8 @@ static void init_giveback_urb_bh(struct giveback_urb_bh *bh) tasklet_init(&bh->bh, usb_giveback_urb_bh, (unsigned long)bh); } -/** - * usb_create_shared_hcd - create and initialize an HCD structure - * @driver: HC driver that will use this hcd - * @dev: device for this HC, stored in hcd->self.controller - * @bus_name: value to store in hcd->self.bus_name - * @primary_hcd: a pointer to the usb_hcd structure that is sharing the - * PCI device. Only allocate certain resources for the primary HCD - * Context: !in_interrupt() - * - * Allocate a struct usb_hcd, with extra space at the end for the - * HC driver's private data. Initialize the generic members of the - * hcd structure. - * - * Return: On success, a pointer to the created and initialized HCD structure. - * On failure (e.g. if memory is unavailable), %NULL. - */ -struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, - struct device *dev, const char *bus_name, +struct usb_hcd *__usb_create_hcd(const struct hc_driver *driver, + struct device *sysdev, struct device *dev, const char *bus_name, struct usb_hcd *primary_hcd) { struct usb_hcd *hcd; @@ -2556,8 +2541,9 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, usb_bus_init(&hcd->self); hcd->self.controller = dev; + hcd->self.sysdev = sysdev; hcd->self.bus_name = bus_name; - hcd->self.uses_dma = (dev->dma_mask != NULL); + hcd->self.uses_dma = (sysdev->dma_mask != NULL); init_timer(&hcd->rh_timer); hcd->rh_timer.function = rh_timer_func; @@ -2572,6 +2558,30 @@ struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, "USB Host Controller"; return hcd; } +EXPORT_SYMBOL_GPL(__usb_create_hcd); + +/** + * usb_create_shared_hcd - create and initialize an HCD structure + * @driver: HC driver that will use this hcd + * @dev: device for this HC, stored in hcd->self.controller + * @bus_name: value to store in hcd->self.bus_name + * @primary_hcd: a pointer to the usb_hcd structure that is sharing the + * PCI device. Only allocate certain resources for the primary HCD + * Context: !in_interrupt() + * + * Allocate a struct usb_hcd, with extra space at the end for the + * HC driver's private data. Initialize the generic members of the + * hcd structure. + * + * Return: On success, a pointer to the created and initialized HCD structure. + * On failure (e.g. if memory is unavailable), %NULL. + */ +struct usb_hcd *usb_create_shared_hcd(const struct hc_driver *driver, + struct device *dev, const char *bus_name, + struct usb_hcd *primary_hcd) +{ + return __usb_create_hcd(driver, dev, dev, bus_name, primary_hcd); +} EXPORT_SYMBOL_GPL(usb_create_shared_hcd); /** @@ -2591,7 +2601,7 @@ EXPORT_SYMBOL_GPL(usb_create_shared_hcd); struct usb_hcd *usb_create_hcd(const struct hc_driver *driver, struct device *dev, const char *bus_name) { - return usb_create_shared_hcd(driver, dev, bus_name, NULL); + return __usb_create_hcd(driver, dev, dev, bus_name, NULL); } EXPORT_SYMBOL_GPL(usb_create_hcd); @@ -2718,7 +2728,7 @@ int usb_add_hcd(struct usb_hcd *hcd, struct usb_device *rhdev; if (IS_ENABLED(CONFIG_USB_PHY) && !hcd->usb_phy) { - struct usb_phy *phy = usb_get_phy_dev(hcd->self.controller, 0); + struct usb_phy *phy = usb_get_phy_dev(hcd->self.sysdev, 0); if (IS_ERR(phy)) { retval = PTR_ERR(phy); @@ -2736,7 +2746,7 @@ int usb_add_hcd(struct usb_hcd *hcd, } if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) { - struct phy *phy = phy_get(hcd->self.controller, "usb"); + struct phy *phy = phy_get(hcd->self.sysdev, "usb"); if (IS_ERR(phy)) { retval = PTR_ERR(phy); @@ -2784,7 +2794,7 @@ int usb_add_hcd(struct usb_hcd *hcd, */ retval = hcd_buffer_create(hcd); if (retval != 0) { - dev_dbg(hcd->self.controller, "pool alloc failed\n"); + dev_dbg(hcd->self.sysdev, "pool alloc failed\n"); goto err_create_buf; } @@ -2794,7 +2804,7 @@ int usb_add_hcd(struct usb_hcd *hcd, rhdev = usb_alloc_dev(NULL, &hcd->self, 0); if (rhdev == NULL) { - dev_err(hcd->self.controller, "unable to allocate root hub\n"); + dev_err(hcd->self.sysdev, "unable to allocate root hub\n"); retval = -ENOMEM; goto err_allocate_root_hub; } diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 5286bf67869a..9dca59ef18b3 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -1066,6 +1066,9 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) portstatus = portchange = 0; status = hub_port_status(hub, port1, &portstatus, &portchange); + if (status) + goto abort; + if (udev || (portstatus & USB_PORT_STAT_CONNECTION)) dev_dbg(&port_dev->dev, "status %04x change %04x\n", portstatus, portchange); @@ -1198,7 +1201,7 @@ static void hub_activate(struct usb_hub *hub, enum hub_activation_type type) /* Scan all ports that need attention */ kick_hub_wq(hub); - + abort: if (type == HUB_INIT2 || type == HUB_INIT3) { /* Allow autosuspend if it was suppressed */ disconnected: @@ -2084,6 +2087,12 @@ void usb_disconnect(struct usb_device **pdev) dev_info(&udev->dev, "USB disconnect, device number %d\n", udev->devnum); + /* + * Ensure that the pm runtime code knows that the USB device + * is in the process of being disconnected. + */ + pm_runtime_barrier(&udev->dev); + usb_lock_device(udev); hub_disconnect_children(udev); diff --git a/drivers/usb/core/of.c b/drivers/usb/core/of.c index 3de4f8873984..d787f195a9a6 100644 --- a/drivers/usb/core/of.c +++ b/drivers/usb/core/of.c @@ -18,6 +18,7 @@ */ #include <linux/of.h> +#include <linux/of_platform.h> #include <linux/usb/of.h> /** @@ -46,3 +47,25 @@ struct device_node *usb_of_get_child_node(struct device_node *parent, } EXPORT_SYMBOL_GPL(usb_of_get_child_node); +/** + * usb_of_get_companion_dev - Find the companion device + * @dev: the device pointer to find a companion + * + * Find the companion device from platform bus. + * + * Return: On success, a pointer to the companion device, %NULL on failure. + */ +struct device *usb_of_get_companion_dev(struct device *dev) +{ + struct device_node *node; + struct platform_device *pdev = NULL; + + node = of_parse_phandle(dev->of_node, "companion", 0); + if (node) + pdev = of_find_device_by_node(node); + + of_node_put(node); + + return pdev ? &pdev->dev : NULL; +} +EXPORT_SYMBOL_GPL(usb_of_get_companion_dev); diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c index a2ccc69fb45c..28b053cacc90 100644 --- a/drivers/usb/core/usb.c +++ b/drivers/usb/core/usb.c @@ -74,6 +74,140 @@ MODULE_PARM_DESC(autosuspend, "default autosuspend delay"); #define usb_autosuspend_delay 0 #endif +static bool match_endpoint(struct usb_endpoint_descriptor *epd, + struct usb_endpoint_descriptor **bulk_in, + struct usb_endpoint_descriptor **bulk_out, + struct usb_endpoint_descriptor **int_in, + struct usb_endpoint_descriptor **int_out) +{ + switch (usb_endpoint_type(epd)) { + case USB_ENDPOINT_XFER_BULK: + if (usb_endpoint_dir_in(epd)) { + if (bulk_in && !*bulk_in) { + *bulk_in = epd; + break; + } + } else { + if (bulk_out && !*bulk_out) { + *bulk_out = epd; + break; + } + } + + return false; + case USB_ENDPOINT_XFER_INT: + if (usb_endpoint_dir_in(epd)) { + if (int_in && !*int_in) { + *int_in = epd; + break; + } + } else { + if (int_out && !*int_out) { + *int_out = epd; + break; + } + } + + return false; + default: + return false; + } + + return (!bulk_in || *bulk_in) && (!bulk_out || *bulk_out) && + (!int_in || *int_in) && (!int_out || *int_out); +} + +/** + * usb_find_common_endpoints() -- look up common endpoint descriptors + * @alt: alternate setting to search + * @bulk_in: pointer to descriptor pointer, or NULL + * @bulk_out: pointer to descriptor pointer, or NULL + * @int_in: pointer to descriptor pointer, or NULL + * @int_out: pointer to descriptor pointer, or NULL + * + * Search the alternate setting's endpoint descriptors for the first bulk-in, + * bulk-out, interrupt-in and interrupt-out endpoints and return them in the + * provided pointers (unless they are NULL). + * + * If a requested endpoint is not found, the corresponding pointer is set to + * NULL. + * + * Return: Zero if all requested descriptors were found, or -ENXIO otherwise. + */ +int usb_find_common_endpoints(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in, + struct usb_endpoint_descriptor **bulk_out, + struct usb_endpoint_descriptor **int_in, + struct usb_endpoint_descriptor **int_out) +{ + struct usb_endpoint_descriptor *epd; + int i; + + if (bulk_in) + *bulk_in = NULL; + if (bulk_out) + *bulk_out = NULL; + if (int_in) + *int_in = NULL; + if (int_out) + *int_out = NULL; + + for (i = 0; i < alt->desc.bNumEndpoints; ++i) { + epd = &alt->endpoint[i].desc; + + if (match_endpoint(epd, bulk_in, bulk_out, int_in, int_out)) + return 0; + } + + return -ENXIO; +} +EXPORT_SYMBOL_GPL(usb_find_common_endpoints); + +/** + * usb_find_common_endpoints_reverse() -- look up common endpoint descriptors + * @alt: alternate setting to search + * @bulk_in: pointer to descriptor pointer, or NULL + * @bulk_out: pointer to descriptor pointer, or NULL + * @int_in: pointer to descriptor pointer, or NULL + * @int_out: pointer to descriptor pointer, or NULL + * + * Search the alternate setting's endpoint descriptors for the last bulk-in, + * bulk-out, interrupt-in and interrupt-out endpoints and return them in the + * provided pointers (unless they are NULL). + * + * If a requested endpoint is not found, the corresponding pointer is set to + * NULL. + * + * Return: Zero if all requested descriptors were found, or -ENXIO otherwise. + */ +int usb_find_common_endpoints_reverse(struct usb_host_interface *alt, + struct usb_endpoint_descriptor **bulk_in, + struct usb_endpoint_descriptor **bulk_out, + struct usb_endpoint_descriptor **int_in, + struct usb_endpoint_descriptor **int_out) +{ + struct usb_endpoint_descriptor *epd; + int i; + + if (bulk_in) + *bulk_in = NULL; + if (bulk_out) + *bulk_out = NULL; + if (int_in) + *int_in = NULL; + if (int_out) + *int_out = NULL; + + for (i = alt->desc.bNumEndpoints - 1; i >= 0; --i) { + epd = &alt->endpoint[i].desc; + + if (match_endpoint(epd, bulk_in, bulk_out, int_in, int_out)) + return 0; + } + + return -ENXIO; +} +EXPORT_SYMBOL_GPL(usb_find_common_endpoints_reverse); /** * usb_find_alt_setting() - Given a configuration, find the alternate setting @@ -453,9 +587,9 @@ struct usb_device *usb_alloc_dev(struct usb_device *parent, * Note: calling dma_set_mask() on a USB device would set the * mask for the entire HCD, so don't do that. */ - dev->dev.dma_mask = bus->controller->dma_mask; - dev->dev.dma_pfn_offset = bus->controller->dma_pfn_offset; - set_dev_node(&dev->dev, dev_to_node(bus->controller)); + dev->dev.dma_mask = bus->sysdev->dma_mask; + dev->dev.dma_pfn_offset = bus->sysdev->dma_pfn_offset; + set_dev_node(&dev->dev, dev_to_node(bus->sysdev)); dev->state = USB_STATE_ATTACHED; dev->lpm_disable_count = 1; atomic_set(&dev->urbnum, 0); @@ -803,7 +937,7 @@ struct urb *usb_buffer_map(struct urb *urb) if (!urb || !urb->dev || !(bus = urb->dev->bus) - || !(controller = bus->controller)) + || !(controller = bus->sysdev)) return NULL; if (controller->dma_mask) { @@ -841,7 +975,7 @@ void usb_buffer_dmasync(struct urb *urb) || !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) || !urb->dev || !(bus = urb->dev->bus) - || !(controller = bus->controller)) + || !(controller = bus->sysdev)) return; if (controller->dma_mask) { @@ -875,7 +1009,7 @@ void usb_buffer_unmap(struct urb *urb) || !(urb->transfer_flags & URB_NO_TRANSFER_DMA_MAP) || !urb->dev || !(bus = urb->dev->bus) - || !(controller = bus->controller)) + || !(controller = bus->sysdev)) return; if (controller->dma_mask) { @@ -925,7 +1059,7 @@ int usb_buffer_map_sg(const struct usb_device *dev, int is_in, if (!dev || !(bus = dev->bus) - || !(controller = bus->controller) + || !(controller = bus->sysdev) || !controller->dma_mask) return -EINVAL; @@ -961,7 +1095,7 @@ void usb_buffer_dmasync_sg(const struct usb_device *dev, int is_in, if (!dev || !(bus = dev->bus) - || !(controller = bus->controller) + || !(controller = bus->sysdev) || !controller->dma_mask) return; @@ -989,7 +1123,7 @@ void usb_buffer_unmap_sg(const struct usb_device *dev, int is_in, if (!dev || !(bus = dev->bus) - || !(controller = bus->controller) + || !(controller = bus->sysdev) || !controller->dma_mask) return; diff --git a/drivers/usb/dwc2/Kconfig b/drivers/usb/dwc2/Kconfig index e838701d6dd5..b6a495e98fd8 100644 --- a/drivers/usb/dwc2/Kconfig +++ b/drivers/usb/dwc2/Kconfig @@ -54,7 +54,7 @@ endchoice config USB_DWC2_PCI tristate "DWC2 PCI" - depends on PCI + depends on USB_PCI depends on USB_GADGET || !USB_GADGET default n select NOP_USB_XCEIV diff --git a/drivers/usb/dwc2/core.h b/drivers/usb/dwc2/core.h index 1a7e83005082..8367d4f985c1 100644 --- a/drivers/usb/dwc2/core.h +++ b/drivers/usb/dwc2/core.h @@ -423,6 +423,10 @@ enum dwc2_ep0_state { * needed. * 0 - No (default) * 1 - Yes + * @activate_stm_fs_transceiver: Activate internal transceiver using GGPIO + * register. + * 0 - Deactivate the transceiver (default) + * 1 - Activate the transceiver * @g_dma: Enables gadget dma usage (default: autodetect). * @g_dma_desc: Enables gadget descriptor DMA (default: autodetect). * @g_rx_fifo_size: The periodic rx fifo size for the device, in @@ -477,6 +481,7 @@ struct dwc2_core_params { bool uframe_sched; bool external_id_pin_ctl; bool hibernation; + bool activate_stm_fs_transceiver; u16 max_packet_count; u32 max_transfer_size; u32 ahbcfg; diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index a73722e27d07..740c7e86d31b 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -121,7 +121,7 @@ static void dwc2_init_fs_ls_pclk_sel(struct dwc2_hsotg *hsotg) static int dwc2_fs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) { - u32 usbcfg, i2cctl; + u32 usbcfg, ggpio, i2cctl; int retval = 0; /* @@ -145,6 +145,19 @@ static int dwc2_fs_phy_init(struct dwc2_hsotg *hsotg, bool select_phy) return retval; } } + + if (hsotg->params.activate_stm_fs_transceiver) { + ggpio = dwc2_readl(hsotg->regs + GGPIO); + if (!(ggpio & GGPIO_STM32_OTG_GCCFG_PWRDWN)) { + dev_dbg(hsotg->dev, "Activating transceiver\n"); + /* + * STM32F4x9 uses the GGPIO register as general + * core configuration register. + */ + ggpio |= GGPIO_STM32_OTG_GCCFG_PWRDWN; + dwc2_writel(ggpio, hsotg->regs + GGPIO); + } + } } /* @@ -3264,6 +3277,7 @@ static void dwc2_conn_id_status_change(struct work_struct *work) dwc2_core_init(hsotg, false); dwc2_enable_global_interrupts(hsotg); spin_lock_irqsave(&hsotg->lock, flags); + dwc2_hsotg_disconnect(hsotg); dwc2_hsotg_core_init_disconnected(hsotg, false); spin_unlock_irqrestore(&hsotg->lock, flags); dwc2_hsotg_core_connect(hsotg); diff --git a/drivers/usb/dwc2/hw.h b/drivers/usb/dwc2/hw.h index bde72489ae66..4592012c4743 100644 --- a/drivers/usb/dwc2/hw.h +++ b/drivers/usb/dwc2/hw.h @@ -225,6 +225,8 @@ #define GPVNDCTL HSOTG_REG(0x0034) #define GGPIO HSOTG_REG(0x0038) +#define GGPIO_STM32_OTG_GCCFG_PWRDWN BIT(16) + #define GUID HSOTG_REG(0x003c) #define GSNPSID HSOTG_REG(0x0040) #define GHWCFG1 HSOTG_REG(0x0044) diff --git a/drivers/usb/dwc2/params.c b/drivers/usb/dwc2/params.c index 2990c347289f..9cd8722f24f6 100644 --- a/drivers/usb/dwc2/params.c +++ b/drivers/usb/dwc2/params.c @@ -120,6 +120,22 @@ static void dwc2_set_amcc_params(struct dwc2_hsotg *hsotg) p->ahbcfg = GAHBCFG_HBSTLEN_INCR16 << GAHBCFG_HBSTLEN_SHIFT; } +static void dwc2_set_stm32f4x9_fsotg_params(struct dwc2_hsotg *hsotg) +{ + struct dwc2_core_params *p = &hsotg->params; + + p->otg_cap = DWC2_CAP_PARAM_NO_HNP_SRP_CAPABLE; + p->speed = DWC2_SPEED_PARAM_FULL; + p->host_rx_fifo_size = 128; + p->host_nperio_tx_fifo_size = 96; + p->host_perio_tx_fifo_size = 96; + p->max_packet_count = 256; + p->phy_type = DWC2_PHY_TYPE_PARAM_FS; + p->i2c_enable = false; + p->uframe_sched = false; + p->activate_stm_fs_transceiver = true; +} + const struct of_device_id dwc2_of_match_table[] = { { .compatible = "brcm,bcm2835-usb", .data = dwc2_set_bcm_params }, { .compatible = "hisilicon,hi6220-usb", .data = dwc2_set_his_params }, @@ -133,6 +149,9 @@ const struct of_device_id dwc2_of_match_table[] = { { .compatible = "amlogic,meson-gxbb-usb", .data = dwc2_set_amlogic_params }, { .compatible = "amcc,dwc-otg", .data = dwc2_set_amcc_params }, + { .compatible = "st,stm32f4x9-fsotg", + .data = dwc2_set_stm32f4x9_fsotg_params }, + { .compatible = "st,stm32f4x9-hsotg" }, {}, }; MODULE_DEVICE_TABLE(of, dwc2_of_match_table); diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index 9564bc76c56f..daf0d37acb37 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -214,20 +214,11 @@ static int dwc2_lowlevel_hw_init(struct dwc2_hsotg *hsotg) hsotg->reset = devm_reset_control_get_optional(hsotg->dev, "dwc2"); if (IS_ERR(hsotg->reset)) { ret = PTR_ERR(hsotg->reset); - switch (ret) { - case -ENOENT: - case -ENOTSUPP: - hsotg->reset = NULL; - break; - default: - dev_err(hsotg->dev, "error getting reset control %d\n", - ret); - return ret; - } + dev_err(hsotg->dev, "error getting reset control %d\n", ret); + return ret; } - if (hsotg->reset) - reset_control_deassert(hsotg->reset); + reset_control_deassert(hsotg->reset); /* Set default UTMI width */ hsotg->phyif = GUSBCFG_PHYIF16; @@ -326,8 +317,7 @@ static int dwc2_driver_remove(struct platform_device *dev) if (hsotg->ll_hw_enabled) dwc2_lowlevel_hw_disable(hsotg); - if (hsotg->reset) - reset_control_assert(hsotg->reset); + reset_control_assert(hsotg->reset); return 0; } diff --git a/drivers/usb/dwc3/Kconfig b/drivers/usb/dwc3/Kconfig index c5aa235863e8..ab8c0e0d3b60 100644 --- a/drivers/usb/dwc3/Kconfig +++ b/drivers/usb/dwc3/Kconfig @@ -41,6 +41,7 @@ config USB_DWC3_GADGET config USB_DWC3_DUAL_ROLE bool "Dual Role mode" depends on ((USB=y || USB=USB_DWC3) && (USB_GADGET=y || USB_GADGET=USB_DWC3)) + depends on (EXTCON=y || EXTCON=USB_DWC3) help This is the default mode of working of DWC3 controller where both host and gadget features are enabled. @@ -70,7 +71,7 @@ config USB_DWC3_EXYNOS config USB_DWC3_PCI tristate "PCIe-based Platforms" - depends on PCI && ACPI + depends on USB_PCI && ACPI default USB_DWC3 help If you're using the DesignWare Core IP with a PCIe, please say diff --git a/drivers/usb/dwc3/Makefile b/drivers/usb/dwc3/Makefile index ffca34029b21..f15fabbd1e59 100644 --- a/drivers/usb/dwc3/Makefile +++ b/drivers/usb/dwc3/Makefile @@ -17,6 +17,10 @@ ifneq ($(filter y,$(CONFIG_USB_DWC3_GADGET) $(CONFIG_USB_DWC3_DUAL_ROLE)),) dwc3-y += gadget.o ep0.o endif +ifneq ($(CONFIG_USB_DWC3_DUAL_ROLE),) + dwc3-y += drd.o +endif + ifneq ($(CONFIG_USB_DWC3_ULPI),) dwc3-y += ulpi.o endif diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 369bab16a824..455d89a1cd6d 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -100,7 +100,10 @@ static int dwc3_get_dr_mode(struct dwc3 *dwc) return 0; } -void dwc3_set_mode(struct dwc3 *dwc, u32 mode) +static void dwc3_event_buffers_cleanup(struct dwc3 *dwc); +static int dwc3_event_buffers_setup(struct dwc3 *dwc); + +static void dwc3_set_prtcap(struct dwc3 *dwc, u32 mode) { u32 reg; @@ -110,6 +113,69 @@ void dwc3_set_mode(struct dwc3 *dwc, u32 mode) dwc3_writel(dwc->regs, DWC3_GCTL, reg); } +static void __dwc3_set_mode(struct work_struct *work) +{ + struct dwc3 *dwc = work_to_dwc(work); + unsigned long flags; + int ret; + + if (!dwc->desired_dr_role) + return; + + if (dwc->desired_dr_role == dwc->current_dr_role) + return; + + if (dwc->dr_mode != USB_DR_MODE_OTG) + return; + + switch (dwc->current_dr_role) { + case DWC3_GCTL_PRTCAP_HOST: + dwc3_host_exit(dwc); + break; + case DWC3_GCTL_PRTCAP_DEVICE: + dwc3_gadget_exit(dwc); + dwc3_event_buffers_cleanup(dwc); + break; + default: + break; + } + + spin_lock_irqsave(&dwc->lock, flags); + + dwc3_set_prtcap(dwc, dwc->desired_dr_role); + + dwc->current_dr_role = dwc->desired_dr_role; + + spin_unlock_irqrestore(&dwc->lock, flags); + + switch (dwc->desired_dr_role) { + case DWC3_GCTL_PRTCAP_HOST: + ret = dwc3_host_init(dwc); + if (ret) + dev_err(dwc->dev, "failed to initialize host\n"); + break; + case DWC3_GCTL_PRTCAP_DEVICE: + dwc3_event_buffers_setup(dwc); + ret = dwc3_gadget_init(dwc); + if (ret) + dev_err(dwc->dev, "failed to initialize peripheral\n"); + break; + default: + break; + } +} + +void dwc3_set_mode(struct dwc3 *dwc, u32 mode) +{ + unsigned long flags; + + spin_lock_irqsave(&dwc->lock, flags); + dwc->desired_dr_role = mode; + spin_unlock_irqrestore(&dwc->lock, flags); + + queue_work(system_power_efficient_wq, &dwc->drd_work); +} + u32 dwc3_core_fifo_space(struct dwc3_ep *dep, u8 type) { struct dwc3 *dwc = dep->dwc; @@ -397,8 +463,7 @@ static void dwc3_core_num_eps(struct dwc3 *dwc) { struct dwc3_hwparams *parms = &dwc->hwparams; - dwc->num_in_eps = DWC3_NUM_IN_EPS(parms); - dwc->num_out_eps = DWC3_NUM_EPS(parms) - dwc->num_in_eps; + dwc->num_eps = DWC3_NUM_EPS(parms); } static void dwc3_cache_hwparams(struct dwc3 *dwc) @@ -432,6 +497,12 @@ static int dwc3_phy_setup(struct dwc3 *dwc) reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0)); /* + * Make sure UX_EXIT_PX is cleared as that causes issues with some + * PHYs. Also, this bit is not supposed to be used in normal operation. + */ + reg &= ~DWC3_GUSB3PIPECTL_UX_EXIT_PX; + + /* * Above 1.94a, it is recommended to set DWC3_GUSB3PIPECTL_SUSPHY * to '0' during coreConsultant configuration. So default value * will be '0' when the core is reset. Application needs to set it @@ -714,21 +785,6 @@ static int dwc3_core_init(struct dwc3 *dwc) goto err4; } - switch (dwc->dr_mode) { - case USB_DR_MODE_PERIPHERAL: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); - break; - case USB_DR_MODE_HOST: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_HOST); - break; - case USB_DR_MODE_OTG: - dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_OTG); - break; - default: - dev_warn(dwc->dev, "Unsupported mode %d\n", dwc->dr_mode); - break; - } - /* * ENDXFER polling is available on version 3.10a and later of * the DWC_usb3 controller. It is NOT available in the @@ -846,6 +902,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) switch (dwc->dr_mode) { case USB_DR_MODE_PERIPHERAL: + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE); ret = dwc3_gadget_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -854,6 +911,7 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) } break; case USB_DR_MODE_HOST: + dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_HOST); ret = dwc3_host_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) @@ -862,17 +920,11 @@ static int dwc3_core_init_mode(struct dwc3 *dwc) } break; case USB_DR_MODE_OTG: - ret = dwc3_host_init(dwc); - if (ret) { - if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to initialize host\n"); - return ret; - } - - ret = dwc3_gadget_init(dwc); + INIT_WORK(&dwc->drd_work, __dwc3_set_mode); + ret = dwc3_drd_init(dwc); if (ret) { if (ret != -EPROBE_DEFER) - dev_err(dev, "failed to initialize gadget\n"); + dev_err(dev, "failed to initialize dual-role\n"); return ret; } break; @@ -894,8 +946,7 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc) dwc3_host_exit(dwc); break; case USB_DR_MODE_OTG: - dwc3_host_exit(dwc); - dwc3_gadget_exit(dwc); + dwc3_drd_exit(dwc); break; default: /* do nothing */ diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 2b9e4ca3c932..981c77f5628e 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -23,10 +23,12 @@ #include <linux/spinlock.h> #include <linux/ioport.h> #include <linux/list.h> +#include <linux/bitops.h> #include <linux/dma-mapping.h> #include <linux/mm.h> #include <linux/debugfs.h> #include <linux/wait.h> +#include <linux/workqueue.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -39,9 +41,8 @@ /* Global constants */ #define DWC3_PULL_UP_TIMEOUT 500 /* ms */ -#define DWC3_ZLP_BUF_SIZE 1024 /* size of a superspeed bulk */ #define DWC3_BOUNCE_SIZE 1024 /* size of a superspeed bulk */ -#define DWC3_EP0_BOUNCE_SIZE 512 +#define DWC3_EP0_SETUP_SIZE 512 #define DWC3_ENDPOINTS_NUM 32 #define DWC3_XHCI_RESOURCES_NUM 2 @@ -66,7 +67,7 @@ #define DWC3_DEVICE_EVENT_OVERFLOW 11 #define DWC3_GEVNTCOUNT_MASK 0xfffc -#define DWC3_GEVNTCOUNT_EHB (1 << 31) +#define DWC3_GEVNTCOUNT_EHB BIT(31) #define DWC3_GSNPSID_MASK 0xffff0000 #define DWC3_GSNPSREV_MASK 0xffff @@ -116,20 +117,20 @@ #define DWC3_VER_NUMBER 0xc1a0 #define DWC3_VER_TYPE 0xc1a4 -#define DWC3_GUSB2PHYCFG(n) (0xc200 + (n * 0x04)) -#define DWC3_GUSB2I2CCTL(n) (0xc240 + (n * 0x04)) +#define DWC3_GUSB2PHYCFG(n) (0xc200 + ((n) * 0x04)) +#define DWC3_GUSB2I2CCTL(n) (0xc240 + ((n) * 0x04)) -#define DWC3_GUSB2PHYACC(n) (0xc280 + (n * 0x04)) +#define DWC3_GUSB2PHYACC(n) (0xc280 + ((n) * 0x04)) -#define DWC3_GUSB3PIPECTL(n) (0xc2c0 + (n * 0x04)) +#define DWC3_GUSB3PIPECTL(n) (0xc2c0 + ((n) * 0x04)) -#define DWC3_GTXFIFOSIZ(n) (0xc300 + (n * 0x04)) -#define DWC3_GRXFIFOSIZ(n) (0xc380 + (n * 0x04)) +#define DWC3_GTXFIFOSIZ(n) (0xc300 + ((n) * 0x04)) +#define DWC3_GRXFIFOSIZ(n) (0xc380 + ((n) * 0x04)) -#define DWC3_GEVNTADRLO(n) (0xc400 + (n * 0x10)) -#define DWC3_GEVNTADRHI(n) (0xc404 + (n * 0x10)) -#define DWC3_GEVNTSIZ(n) (0xc408 + (n * 0x10)) -#define DWC3_GEVNTCOUNT(n) (0xc40c + (n * 0x10)) +#define DWC3_GEVNTADRLO(n) (0xc400 + ((n) * 0x10)) +#define DWC3_GEVNTADRHI(n) (0xc404 + ((n) * 0x10)) +#define DWC3_GEVNTSIZ(n) (0xc408 + ((n) * 0x10)) +#define DWC3_GEVNTCOUNT(n) (0xc40c + ((n) * 0x10)) #define DWC3_GHWPARAMS8 0xc600 #define DWC3_GFLADJ 0xc630 @@ -143,13 +144,13 @@ #define DWC3_DGCMD 0xc714 #define DWC3_DALEPENA 0xc720 -#define DWC3_DEP_BASE(n) (0xc800 + (n * 0x10)) +#define DWC3_DEP_BASE(n) (0xc800 + ((n) * 0x10)) #define DWC3_DEPCMDPAR2 0x00 #define DWC3_DEPCMDPAR1 0x04 #define DWC3_DEPCMDPAR0 0x08 #define DWC3_DEPCMD 0x0c -#define DWC3_DEV_IMOD(n) (0xca00 + (n * 0x4)) +#define DWC3_DEV_IMOD(n) (0xca00 + ((n) * 0x4)) /* OTG Registers */ #define DWC3_OCFG 0xcc00 @@ -176,11 +177,11 @@ /* Global RX Threshold Configuration Register */ #define DWC3_GRXTHRCFG_MAXRXBURSTSIZE(n) (((n) & 0x1f) << 19) #define DWC3_GRXTHRCFG_RXPKTCNT(n) (((n) & 0xf) << 24) -#define DWC3_GRXTHRCFG_PKTCNTSEL (1 << 29) +#define DWC3_GRXTHRCFG_PKTCNTSEL BIT(29) /* Global Configuration Register */ #define DWC3_GCTL_PWRDNSCALE(n) ((n) << 19) -#define DWC3_GCTL_U2RSTECN (1 << 16) +#define DWC3_GCTL_U2RSTECN BIT(16) #define DWC3_GCTL_RAMCLKSEL(x) (((x) & DWC3_GCTL_CLK_MASK) << 6) #define DWC3_GCTL_CLK_BUS (0) #define DWC3_GCTL_CLK_PIPE (1) @@ -193,24 +194,24 @@ #define DWC3_GCTL_PRTCAP_DEVICE 2 #define DWC3_GCTL_PRTCAP_OTG 3 -#define DWC3_GCTL_CORESOFTRESET (1 << 11) -#define DWC3_GCTL_SOFITPSYNC (1 << 10) +#define DWC3_GCTL_CORESOFTRESET BIT(11) +#define DWC3_GCTL_SOFITPSYNC BIT(10) #define DWC3_GCTL_SCALEDOWN(n) ((n) << 4) #define DWC3_GCTL_SCALEDOWN_MASK DWC3_GCTL_SCALEDOWN(3) -#define DWC3_GCTL_DISSCRAMBLE (1 << 3) -#define DWC3_GCTL_U2EXIT_LFPS (1 << 2) -#define DWC3_GCTL_GBLHIBERNATIONEN (1 << 1) -#define DWC3_GCTL_DSBLCLKGTNG (1 << 0) +#define DWC3_GCTL_DISSCRAMBLE BIT(3) +#define DWC3_GCTL_U2EXIT_LFPS BIT(2) +#define DWC3_GCTL_GBLHIBERNATIONEN BIT(1) +#define DWC3_GCTL_DSBLCLKGTNG BIT(0) /* Global User Control 1 Register */ -#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW (1 << 24) +#define DWC3_GUCTL1_DEV_L1_EXIT_BY_HW BIT(24) /* Global USB2 PHY Configuration Register */ -#define DWC3_GUSB2PHYCFG_PHYSOFTRST (1 << 31) -#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS (1 << 30) -#define DWC3_GUSB2PHYCFG_SUSPHY (1 << 6) -#define DWC3_GUSB2PHYCFG_ULPI_UTMI (1 << 4) -#define DWC3_GUSB2PHYCFG_ENBLSLPM (1 << 8) +#define DWC3_GUSB2PHYCFG_PHYSOFTRST BIT(31) +#define DWC3_GUSB2PHYCFG_U2_FREECLK_EXISTS BIT(30) +#define DWC3_GUSB2PHYCFG_SUSPHY BIT(6) +#define DWC3_GUSB2PHYCFG_ULPI_UTMI BIT(4) +#define DWC3_GUSB2PHYCFG_ENBLSLPM BIT(8) #define DWC3_GUSB2PHYCFG_PHYIF(n) (n << 3) #define DWC3_GUSB2PHYCFG_PHYIF_MASK DWC3_GUSB2PHYCFG_PHYIF(1) #define DWC3_GUSB2PHYCFG_USBTRDTIM(n) (n << 10) @@ -221,25 +222,26 @@ #define UTMI_PHYIF_8_BIT 0 /* Global USB2 PHY Vendor Control Register */ -#define DWC3_GUSB2PHYACC_NEWREGREQ (1 << 25) -#define DWC3_GUSB2PHYACC_BUSY (1 << 23) -#define DWC3_GUSB2PHYACC_WRITE (1 << 22) +#define DWC3_GUSB2PHYACC_NEWREGREQ BIT(25) +#define DWC3_GUSB2PHYACC_BUSY BIT(23) +#define DWC3_GUSB2PHYACC_WRITE BIT(22) #define DWC3_GUSB2PHYACC_ADDR(n) (n << 16) #define DWC3_GUSB2PHYACC_EXTEND_ADDR(n) (n << 8) #define DWC3_GUSB2PHYACC_DATA(n) (n & 0xff) /* Global USB3 PIPE Control Register */ -#define DWC3_GUSB3PIPECTL_PHYSOFTRST (1 << 31) -#define DWC3_GUSB3PIPECTL_U2SSINP3OK (1 << 29) -#define DWC3_GUSB3PIPECTL_DISRXDETINP3 (1 << 28) -#define DWC3_GUSB3PIPECTL_REQP1P2P3 (1 << 24) +#define DWC3_GUSB3PIPECTL_PHYSOFTRST BIT(31) +#define DWC3_GUSB3PIPECTL_U2SSINP3OK BIT(29) +#define DWC3_GUSB3PIPECTL_DISRXDETINP3 BIT(28) +#define DWC3_GUSB3PIPECTL_UX_EXIT_PX BIT(27) +#define DWC3_GUSB3PIPECTL_REQP1P2P3 BIT(24) #define DWC3_GUSB3PIPECTL_DEP1P2P3(n) ((n) << 19) #define DWC3_GUSB3PIPECTL_DEP1P2P3_MASK DWC3_GUSB3PIPECTL_DEP1P2P3(7) #define DWC3_GUSB3PIPECTL_DEP1P2P3_EN DWC3_GUSB3PIPECTL_DEP1P2P3(1) -#define DWC3_GUSB3PIPECTL_DEPOCHANGE (1 << 18) -#define DWC3_GUSB3PIPECTL_SUSPHY (1 << 17) -#define DWC3_GUSB3PIPECTL_LFPSFILT (1 << 9) -#define DWC3_GUSB3PIPECTL_RX_DETOPOLL (1 << 8) +#define DWC3_GUSB3PIPECTL_DEPOCHANGE BIT(18) +#define DWC3_GUSB3PIPECTL_SUSPHY BIT(17) +#define DWC3_GUSB3PIPECTL_LFPSFILT BIT(9) +#define DWC3_GUSB3PIPECTL_RX_DETOPOLL BIT(8) #define DWC3_GUSB3PIPECTL_TX_DEEPH_MASK DWC3_GUSB3PIPECTL_TX_DEEPH(3) #define DWC3_GUSB3PIPECTL_TX_DEEPH(n) ((n) << 1) @@ -248,7 +250,7 @@ #define DWC3_GTXFIFOSIZ_TXFSTADDR(n) ((n) & 0xffff0000) /* Global Event Size Registers */ -#define DWC3_GEVNTSIZ_INTMASK (1 << 31) +#define DWC3_GEVNTSIZ_INTMASK BIT(31) #define DWC3_GEVNTSIZ_SIZE(n) ((n) & 0xffff) /* Global HWPARAMS0 Register */ @@ -289,18 +291,18 @@ #define DWC3_MAX_HIBER_SCRATCHBUFS 15 /* Global HWPARAMS6 Register */ -#define DWC3_GHWPARAMS6_EN_FPGA (1 << 7) +#define DWC3_GHWPARAMS6_EN_FPGA BIT(7) /* Global HWPARAMS7 Register */ #define DWC3_GHWPARAMS7_RAM1_DEPTH(n) ((n) & 0xffff) #define DWC3_GHWPARAMS7_RAM2_DEPTH(n) (((n) >> 16) & 0xffff) /* Global Frame Length Adjustment Register */ -#define DWC3_GFLADJ_30MHZ_SDBND_SEL (1 << 7) +#define DWC3_GFLADJ_30MHZ_SDBND_SEL BIT(7) #define DWC3_GFLADJ_30MHZ_MASK 0x3f /* Global User Control Register 2 */ -#define DWC3_GUCTL2_RST_ACTBITLATER (1 << 14) +#define DWC3_GUCTL2_RST_ACTBITLATER BIT(14) /* Device Configuration Register */ #define DWC3_DCFG_DEVADDR(addr) ((addr) << 3) @@ -310,23 +312,23 @@ #define DWC3_DCFG_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ #define DWC3_DCFG_SUPERSPEED (4 << 0) #define DWC3_DCFG_HIGHSPEED (0 << 0) -#define DWC3_DCFG_FULLSPEED (1 << 0) +#define DWC3_DCFG_FULLSPEED BIT(0) #define DWC3_DCFG_LOWSPEED (2 << 0) #define DWC3_DCFG_NUMP_SHIFT 17 #define DWC3_DCFG_NUMP(n) (((n) >> DWC3_DCFG_NUMP_SHIFT) & 0x1f) #define DWC3_DCFG_NUMP_MASK (0x1f << DWC3_DCFG_NUMP_SHIFT) -#define DWC3_DCFG_LPM_CAP (1 << 22) +#define DWC3_DCFG_LPM_CAP BIT(22) /* Device Control Register */ -#define DWC3_DCTL_RUN_STOP (1 << 31) -#define DWC3_DCTL_CSFTRST (1 << 30) -#define DWC3_DCTL_LSFTRST (1 << 29) +#define DWC3_DCTL_RUN_STOP BIT(31) +#define DWC3_DCTL_CSFTRST BIT(30) +#define DWC3_DCTL_LSFTRST BIT(29) #define DWC3_DCTL_HIRD_THRES_MASK (0x1f << 24) #define DWC3_DCTL_HIRD_THRES(n) ((n) << 24) -#define DWC3_DCTL_APPL1RES (1 << 23) +#define DWC3_DCTL_APPL1RES BIT(23) /* These apply for core versions 1.87a and earlier */ #define DWC3_DCTL_TRGTULST_MASK (0x0f << 17) @@ -341,15 +343,15 @@ #define DWC3_DCTL_LPM_ERRATA_MASK DWC3_DCTL_LPM_ERRATA(0xf) #define DWC3_DCTL_LPM_ERRATA(n) ((n) << 20) -#define DWC3_DCTL_KEEP_CONNECT (1 << 19) -#define DWC3_DCTL_L1_HIBER_EN (1 << 18) -#define DWC3_DCTL_CRS (1 << 17) -#define DWC3_DCTL_CSS (1 << 16) +#define DWC3_DCTL_KEEP_CONNECT BIT(19) +#define DWC3_DCTL_L1_HIBER_EN BIT(18) +#define DWC3_DCTL_CRS BIT(17) +#define DWC3_DCTL_CSS BIT(16) -#define DWC3_DCTL_INITU2ENA (1 << 12) -#define DWC3_DCTL_ACCEPTU2ENA (1 << 11) -#define DWC3_DCTL_INITU1ENA (1 << 10) -#define DWC3_DCTL_ACCEPTU1ENA (1 << 9) +#define DWC3_DCTL_INITU2ENA BIT(12) +#define DWC3_DCTL_ACCEPTU2ENA BIT(11) +#define DWC3_DCTL_INITU1ENA BIT(10) +#define DWC3_DCTL_ACCEPTU1ENA BIT(9) #define DWC3_DCTL_TSTCTRL_MASK (0xf << 1) #define DWC3_DCTL_ULSTCHNGREQ_MASK (0x0f << 5) @@ -364,36 +366,36 @@ #define DWC3_DCTL_ULSTCHNG_LOOPBACK (DWC3_DCTL_ULSTCHNGREQ(11)) /* Device Event Enable Register */ -#define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN (1 << 12) -#define DWC3_DEVTEN_EVNTOVERFLOWEN (1 << 11) -#define DWC3_DEVTEN_CMDCMPLTEN (1 << 10) -#define DWC3_DEVTEN_ERRTICERREN (1 << 9) -#define DWC3_DEVTEN_SOFEN (1 << 7) -#define DWC3_DEVTEN_EOPFEN (1 << 6) -#define DWC3_DEVTEN_HIBERNATIONREQEVTEN (1 << 5) -#define DWC3_DEVTEN_WKUPEVTEN (1 << 4) -#define DWC3_DEVTEN_ULSTCNGEN (1 << 3) -#define DWC3_DEVTEN_CONNECTDONEEN (1 << 2) -#define DWC3_DEVTEN_USBRSTEN (1 << 1) -#define DWC3_DEVTEN_DISCONNEVTEN (1 << 0) +#define DWC3_DEVTEN_VNDRDEVTSTRCVEDEN BIT(12) +#define DWC3_DEVTEN_EVNTOVERFLOWEN BIT(11) +#define DWC3_DEVTEN_CMDCMPLTEN BIT(10) +#define DWC3_DEVTEN_ERRTICERREN BIT(9) +#define DWC3_DEVTEN_SOFEN BIT(7) +#define DWC3_DEVTEN_EOPFEN BIT(6) +#define DWC3_DEVTEN_HIBERNATIONREQEVTEN BIT(5) +#define DWC3_DEVTEN_WKUPEVTEN BIT(4) +#define DWC3_DEVTEN_ULSTCNGEN BIT(3) +#define DWC3_DEVTEN_CONNECTDONEEN BIT(2) +#define DWC3_DEVTEN_USBRSTEN BIT(1) +#define DWC3_DEVTEN_DISCONNEVTEN BIT(0) /* Device Status Register */ -#define DWC3_DSTS_DCNRD (1 << 29) +#define DWC3_DSTS_DCNRD BIT(29) /* This applies for core versions 1.87a and earlier */ -#define DWC3_DSTS_PWRUPREQ (1 << 24) +#define DWC3_DSTS_PWRUPREQ BIT(24) /* These apply for core versions 1.94a and later */ -#define DWC3_DSTS_RSS (1 << 25) -#define DWC3_DSTS_SSS (1 << 24) +#define DWC3_DSTS_RSS BIT(25) +#define DWC3_DSTS_SSS BIT(24) -#define DWC3_DSTS_COREIDLE (1 << 23) -#define DWC3_DSTS_DEVCTRLHLT (1 << 22) +#define DWC3_DSTS_COREIDLE BIT(23) +#define DWC3_DSTS_DEVCTRLHLT BIT(22) #define DWC3_DSTS_USBLNKST_MASK (0x0f << 18) #define DWC3_DSTS_USBLNKST(n) (((n) & DWC3_DSTS_USBLNKST_MASK) >> 18) -#define DWC3_DSTS_RXFIFOEMPTY (1 << 17) +#define DWC3_DSTS_RXFIFOEMPTY BIT(17) #define DWC3_DSTS_SOFFN_MASK (0x3fff << 3) #define DWC3_DSTS_SOFFN(n) (((n) & DWC3_DSTS_SOFFN_MASK) >> 3) @@ -403,7 +405,7 @@ #define DWC3_DSTS_SUPERSPEED_PLUS (5 << 0) /* DWC_usb31 only */ #define DWC3_DSTS_SUPERSPEED (4 << 0) #define DWC3_DSTS_HIGHSPEED (0 << 0) -#define DWC3_DSTS_FULLSPEED (1 << 0) +#define DWC3_DSTS_FULLSPEED BIT(0) #define DWC3_DSTS_LOWSPEED (2 << 0) /* Device Generic Command Register */ @@ -421,26 +423,26 @@ #define DWC3_DGCMD_RUN_SOC_BUS_LOOPBACK 0x10 #define DWC3_DGCMD_STATUS(n) (((n) >> 12) & 0x0F) -#define DWC3_DGCMD_CMDACT (1 << 10) -#define DWC3_DGCMD_CMDIOC (1 << 8) +#define DWC3_DGCMD_CMDACT BIT(10) +#define DWC3_DGCMD_CMDIOC BIT(8) /* Device Generic Command Parameter Register */ -#define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT (1 << 0) +#define DWC3_DGCMDPAR_FORCE_LINKPM_ACCEPT BIT(0) #define DWC3_DGCMDPAR_FIFO_NUM(n) ((n) << 0) #define DWC3_DGCMDPAR_RX_FIFO (0 << 5) -#define DWC3_DGCMDPAR_TX_FIFO (1 << 5) +#define DWC3_DGCMDPAR_TX_FIFO BIT(5) #define DWC3_DGCMDPAR_LOOPBACK_DIS (0 << 0) -#define DWC3_DGCMDPAR_LOOPBACK_ENA (1 << 0) +#define DWC3_DGCMDPAR_LOOPBACK_ENA BIT(0) /* Device Endpoint Command Register */ #define DWC3_DEPCMD_PARAM_SHIFT 16 #define DWC3_DEPCMD_PARAM(x) ((x) << DWC3_DEPCMD_PARAM_SHIFT) #define DWC3_DEPCMD_GET_RSC_IDX(x) (((x) >> DWC3_DEPCMD_PARAM_SHIFT) & 0x7f) #define DWC3_DEPCMD_STATUS(x) (((x) >> 12) & 0x0F) -#define DWC3_DEPCMD_HIPRI_FORCERM (1 << 11) -#define DWC3_DEPCMD_CLEARPENDIN (1 << 11) -#define DWC3_DEPCMD_CMDACT (1 << 10) -#define DWC3_DEPCMD_CMDIOC (1 << 8) +#define DWC3_DEPCMD_HIPRI_FORCERM BIT(11) +#define DWC3_DEPCMD_CLEARPENDIN BIT(11) +#define DWC3_DEPCMD_CMDACT BIT(10) +#define DWC3_DEPCMD_CMDIOC BIT(8) #define DWC3_DEPCMD_DEPSTARTCFG (0x09 << 0) #define DWC3_DEPCMD_ENDTRANSFER (0x08 << 0) @@ -458,7 +460,7 @@ #define DWC3_DEPCMD_CMD(x) ((x) & 0xf) /* The EP number goes 0..31 so ep0 is always out and ep1 is always in */ -#define DWC3_DALEPENA_EP(n) (1 << n) +#define DWC3_DALEPENA_EP(n) BIT(n) #define DWC3_DEPCMD_TYPE_CONTROL 0 #define DWC3_DEPCMD_TYPE_ISOC 1 @@ -500,8 +502,8 @@ struct dwc3_event_buffer { struct dwc3 *dwc; }; -#define DWC3_EP_FLAG_STALLED (1 << 0) -#define DWC3_EP_FLAG_WEDGED (1 << 1) +#define DWC3_EP_FLAG_STALLED BIT(0) +#define DWC3_EP_FLAG_WEDGED BIT(1) #define DWC3_EP_DIRECTION_TX true #define DWC3_EP_DIRECTION_RX false @@ -550,17 +552,17 @@ struct dwc3_ep { u32 saved_state; unsigned flags; -#define DWC3_EP_ENABLED (1 << 0) -#define DWC3_EP_STALL (1 << 1) -#define DWC3_EP_WEDGE (1 << 2) -#define DWC3_EP_BUSY (1 << 4) -#define DWC3_EP_PENDING_REQUEST (1 << 5) -#define DWC3_EP_MISSED_ISOC (1 << 6) -#define DWC3_EP_END_TRANSFER_PENDING (1 << 7) -#define DWC3_EP_TRANSFER_STARTED (1 << 8) +#define DWC3_EP_ENABLED BIT(0) +#define DWC3_EP_STALL BIT(1) +#define DWC3_EP_WEDGE BIT(2) +#define DWC3_EP_BUSY BIT(4) +#define DWC3_EP_PENDING_REQUEST BIT(5) +#define DWC3_EP_MISSED_ISOC BIT(6) +#define DWC3_EP_END_TRANSFER_PENDING BIT(7) +#define DWC3_EP_TRANSFER_STARTED BIT(8) /* This last one is specific to EP0 */ -#define DWC3_EP0_DIR_IN (1 << 31) +#define DWC3_EP0_DIR_IN BIT(31) /* * IMPORTANT: we *know* we have 256 TRBs in our @trb_pool, so we will @@ -638,13 +640,13 @@ enum dwc3_link_state { #define DWC3_TRB_STS_XFER_IN_PROG 4 /* TRB Control */ -#define DWC3_TRB_CTRL_HWO (1 << 0) -#define DWC3_TRB_CTRL_LST (1 << 1) -#define DWC3_TRB_CTRL_CHN (1 << 2) -#define DWC3_TRB_CTRL_CSP (1 << 3) +#define DWC3_TRB_CTRL_HWO BIT(0) +#define DWC3_TRB_CTRL_LST BIT(1) +#define DWC3_TRB_CTRL_CHN BIT(2) +#define DWC3_TRB_CTRL_CSP BIT(3) #define DWC3_TRB_CTRL_TRBCTL(n) (((n) & 0x3f) << 4) -#define DWC3_TRB_CTRL_ISP_IMI (1 << 10) -#define DWC3_TRB_CTRL_IOC (1 << 11) +#define DWC3_TRB_CTRL_ISP_IMI BIT(10) +#define DWC3_TRB_CTRL_IOC BIT(11) #define DWC3_TRB_CTRL_SID_SOFN(n) (((n) & 0xffff) << 14) #define DWC3_TRBCTL_TYPE(n) ((n) & (0x3f << 4)) @@ -746,6 +748,7 @@ struct dwc3_request { unsigned direction:1; unsigned mapped:1; unsigned started:1; + unsigned zero:1; }; /* @@ -758,15 +761,11 @@ struct dwc3_scratchpad_array { /** * struct dwc3 - representation of our controller - * @ctrl_req: usb control request which is used for ep0 + * @drd_work - workqueue used for role swapping * @ep0_trb: trb which is used for the ctrl_req - * @ep0_bounce: bounce buffer for ep0 - * @zlp_buf: used when request->zero is set * @setup_buf: used while precessing STD USB requests - * @ctrl_req_addr: dma address of ctrl_req * @ep0_trb: dma address of ep0_trb * @ep0_usb_req: dummy req used while handling STD USB requests - * @ep0_bounce_addr: dma address of ep0_bounce * @scratch_addr: dma address of scratchbuf * @ep0_in_setup: one control transfer is completed and enter setup phase * @lock: for synchronizing @@ -784,6 +783,10 @@ struct dwc3_scratchpad_array { * @maximum_speed: maximum speed requested (mainly for testing purposes) * @revision: revision register contents * @dr_mode: requested mode of operation + * @current_dr_role: current role of operation when in dual-role mode + * @desired_dr_role: desired role of operation when in dual-role mode + * @edev: extcon handle + * @edev_nb: extcon notifier * @hsphy_mode: UTMI phy mode, one of following: * - USBPHY_INTERFACE_MODE_UTMI * - USBPHY_INTERFACE_MODE_UTMIW @@ -799,8 +802,7 @@ struct dwc3_scratchpad_array { * @u2pel: parameter from Set SEL request. * @u1sel: parameter from Set SEL request. * @u1pel: parameter from Set SEL request. - * @num_out_eps: number of out endpoints - * @num_in_eps: number of in endpoints + * @num_eps: number of endpoints * @ep0_next_event: hold the next expected event * @ep0state: state of endpoint zero * @link_state: link state @@ -858,17 +860,13 @@ struct dwc3_scratchpad_array { * increments or 0 to disable. */ struct dwc3 { - struct usb_ctrlrequest *ctrl_req; + struct work_struct drd_work; struct dwc3_trb *ep0_trb; void *bounce; - void *ep0_bounce; - void *zlp_buf; void *scratchbuf; u8 *setup_buf; - dma_addr_t ctrl_req_addr; dma_addr_t ep0_trb_addr; dma_addr_t bounce_addr; - dma_addr_t ep0_bounce_addr; dma_addr_t scratch_addr; struct dwc3_request ep0_usb_req; struct completion ep0_in_setup; @@ -900,6 +898,10 @@ struct dwc3 { size_t regs_size; enum usb_dr_mode dr_mode; + u32 current_dr_role; + u32 desired_dr_role; + struct extcon_dev *edev; + struct notifier_block edev_nb; enum usb_phy_interface hsphy_mode; u32 fladj; @@ -960,8 +962,7 @@ struct dwc3 { u8 speed; - u8 num_out_eps; - u8 num_in_eps; + u8 num_eps; struct dwc3_hwparams hwparams; struct dentry *root; @@ -1010,7 +1011,7 @@ struct dwc3 { u16 imod_interval; }; -/* -------------------------------------------------------------------------- */ +#define work_to_dwc(w) (container_of((w), struct dwc3, drd_work)) /* -------------------------------------------------------------------------- */ @@ -1054,13 +1055,13 @@ struct dwc3_event_depevt { u32 status:4; /* Within XferNotReady */ -#define DEPEVT_STATUS_TRANSFER_ACTIVE (1 << 3) +#define DEPEVT_STATUS_TRANSFER_ACTIVE BIT(3) /* Within XferComplete */ -#define DEPEVT_STATUS_BUSERR (1 << 0) -#define DEPEVT_STATUS_SHORT (1 << 1) -#define DEPEVT_STATUS_IOC (1 << 2) -#define DEPEVT_STATUS_LST (1 << 3) +#define DEPEVT_STATUS_BUSERR BIT(0) +#define DEPEVT_STATUS_SHORT BIT(1) +#define DEPEVT_STATUS_IOC BIT(2) +#define DEPEVT_STATUS_LST BIT(3) /* Stream event only */ #define DEPEVT_STREAMEVT_FOUND 1 @@ -1221,6 +1222,16 @@ static inline int dwc3_send_gadget_generic_command(struct dwc3 *dwc, { return 0; } #endif +#if IS_ENABLED(CONFIG_USB_DWC3_DUAL_ROLE) +int dwc3_drd_init(struct dwc3 *dwc); +void dwc3_drd_exit(struct dwc3 *dwc); +#else +static inline int dwc3_drd_init(struct dwc3 *dwc) +{ return 0; } +static inline void dwc3_drd_exit(struct dwc3 *dwc) +{ } +#endif + /* power management interface */ #if !IS_ENABLED(CONFIG_USB_DWC3_HOST) int dwc3_gadget_suspend(struct dwc3 *dwc); diff --git a/drivers/usb/dwc3/debug.h b/drivers/usb/dwc3/debug.h index eeed4ffd8131..cb2d8d3f7f3d 100644 --- a/drivers/usb/dwc3/debug.h +++ b/drivers/usb/dwc3/debug.h @@ -124,6 +124,34 @@ dwc3_gadget_link_string(enum dwc3_link_state link_state) } } +/** + * dwc3_trb_type_string - returns TRB type as a string + * @type: the type of the TRB + */ +static inline const char *dwc3_trb_type_string(unsigned int type) +{ + switch (type) { + case DWC3_TRBCTL_NORMAL: + return "normal"; + case DWC3_TRBCTL_CONTROL_SETUP: + return "setup"; + case DWC3_TRBCTL_CONTROL_STATUS2: + return "status2"; + case DWC3_TRBCTL_CONTROL_STATUS3: + return "status3"; + case DWC3_TRBCTL_CONTROL_DATA: + return "data"; + case DWC3_TRBCTL_ISOCHRONOUS_FIRST: + return "isoc-first"; + case DWC3_TRBCTL_ISOCHRONOUS: + return "isoc"; + case DWC3_TRBCTL_LINK_TRB: + return "link"; + default: + return "UNKNOWN"; + } +} + static inline const char *dwc3_ep0_state_string(enum dwc3_ep0_state state) { switch (state) { diff --git a/drivers/usb/dwc3/debugfs.c b/drivers/usb/dwc3/debugfs.c index 31926dda43c9..7be963dd8e3b 100644 --- a/drivers/usb/dwc3/debugfs.c +++ b/drivers/usb/dwc3/debugfs.c @@ -300,7 +300,7 @@ static int dwc3_mode_show(struct seq_file *s, void *unused) seq_printf(s, "device\n"); break; case DWC3_GCTL_PRTCAP_OTG: - seq_printf(s, "OTG\n"); + seq_printf(s, "otg\n"); break; default: seq_printf(s, "UNKNOWN %08x\n", DWC3_GCTL_PRTCAP(reg)); @@ -319,7 +319,6 @@ static ssize_t dwc3_mode_write(struct file *file, { struct seq_file *s = file->private_data; struct dwc3 *dwc = s->private; - unsigned long flags; u32 mode = 0; char buf[32]; @@ -327,19 +326,16 @@ static ssize_t dwc3_mode_write(struct file *file, return -EFAULT; if (!strncmp(buf, "host", 4)) - mode |= DWC3_GCTL_PRTCAP_HOST; + mode = DWC3_GCTL_PRTCAP_HOST; if (!strncmp(buf, "device", 6)) - mode |= DWC3_GCTL_PRTCAP_DEVICE; + mode = DWC3_GCTL_PRTCAP_DEVICE; if (!strncmp(buf, "otg", 3)) - mode |= DWC3_GCTL_PRTCAP_OTG; + mode = DWC3_GCTL_PRTCAP_OTG; + + dwc3_set_mode(dwc, mode); - if (mode) { - spin_lock_irqsave(&dwc->lock, flags); - dwc3_set_mode(dwc, mode); - spin_unlock_irqrestore(&dwc->lock, flags); - } return count; } @@ -446,52 +442,7 @@ static int dwc3_link_state_show(struct seq_file *s, void *unused) state = DWC3_DSTS_USBLNKST(reg); spin_unlock_irqrestore(&dwc->lock, flags); - switch (state) { - case DWC3_LINK_STATE_U0: - seq_printf(s, "U0\n"); - break; - case DWC3_LINK_STATE_U1: - seq_printf(s, "U1\n"); - break; - case DWC3_LINK_STATE_U2: - seq_printf(s, "U2\n"); - break; - case DWC3_LINK_STATE_U3: - seq_printf(s, "U3\n"); - break; - case DWC3_LINK_STATE_SS_DIS: - seq_printf(s, "SS.Disabled\n"); - break; - case DWC3_LINK_STATE_RX_DET: - seq_printf(s, "Rx.Detect\n"); - break; - case DWC3_LINK_STATE_SS_INACT: - seq_printf(s, "SS.Inactive\n"); - break; - case DWC3_LINK_STATE_POLL: - seq_printf(s, "Poll\n"); - break; - case DWC3_LINK_STATE_RECOV: - seq_printf(s, "Recovery\n"); - break; - case DWC3_LINK_STATE_HRESET: - seq_printf(s, "HRESET\n"); - break; - case DWC3_LINK_STATE_CMPLY: - seq_printf(s, "Compliance\n"); - break; - case DWC3_LINK_STATE_LPBK: - seq_printf(s, "Loopback\n"); - break; - case DWC3_LINK_STATE_RESET: - seq_printf(s, "Reset\n"); - break; - case DWC3_LINK_STATE_RESUME: - seq_printf(s, "Resume\n"); - break; - default: - seq_printf(s, "UNKNOWN %d\n", state); - } + seq_printf(s, "%s\n", dwc3_gadget_link_string(state)); return 0; } @@ -689,30 +640,6 @@ out: return 0; } -static inline const char *dwc3_trb_type_string(struct dwc3_trb *trb) -{ - switch (DWC3_TRBCTL_TYPE(trb->ctrl)) { - case DWC3_TRBCTL_NORMAL: - return "normal"; - case DWC3_TRBCTL_CONTROL_SETUP: - return "control-setup"; - case DWC3_TRBCTL_CONTROL_STATUS2: - return "control-status2"; - case DWC3_TRBCTL_CONTROL_STATUS3: - return "control-status3"; - case DWC3_TRBCTL_CONTROL_DATA: - return "control-data"; - case DWC3_TRBCTL_ISOCHRONOUS_FIRST: - return "isoc-first"; - case DWC3_TRBCTL_ISOCHRONOUS: - return "isoc"; - case DWC3_TRBCTL_LINK_TRB: - return "link"; - default: - return "UNKNOWN"; - } -} - static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) { struct dwc3_ep *dep = s->private; @@ -733,10 +660,11 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused) for (i = 0; i < DWC3_TRB_NUM; i++) { struct dwc3_trb *trb = &dep->trb_pool[i]; + unsigned int type = DWC3_TRBCTL_TYPE(trb->ctrl); seq_printf(s, "%08x%08x,%d,%s,%d,%d,%d,%d,%d,%d\n", trb->bph, trb->bpl, trb->size, - dwc3_trb_type_string(trb), + dwc3_trb_type_string(type), !!(trb->ctrl & DWC3_TRB_CTRL_IOC), !!(trb->ctrl & DWC3_TRB_CTRL_ISP_IMI), !!(trb->ctrl & DWC3_TRB_CTRL_CSP), @@ -822,19 +750,8 @@ static void dwc3_debugfs_create_endpoint_dirs(struct dwc3 *dwc, { int i; - for (i = 0; i < dwc->num_in_eps; i++) { - u8 epnum = (i << 1) | 1; - struct dwc3_ep *dep = dwc->eps[epnum]; - - if (!dep) - continue; - - dwc3_debugfs_create_endpoint_dir(dep, parent); - } - - for (i = 0; i < dwc->num_out_eps; i++) { - u8 epnum = (i << 1); - struct dwc3_ep *dep = dwc->eps[epnum]; + for (i = 0; i < dwc->num_eps; i++) { + struct dwc3_ep *dep = dwc->eps[i]; if (!dep) continue; diff --git a/drivers/usb/dwc3/drd.c b/drivers/usb/dwc3/drd.c new file mode 100644 index 000000000000..2765c51c7ef5 --- /dev/null +++ b/drivers/usb/dwc3/drd.c @@ -0,0 +1,85 @@ +/** + * drd.c - DesignWare USB3 DRD Controller Dual-role support + * + * Copyright (C) 2017 Texas Instruments Incorporated - http://www.ti.com + * + * Authors: Roger Quadros <rogerq@ti.com> + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 of + * the License as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +#include <linux/extcon.h> + +#include "debug.h" +#include "core.h" +#include "gadget.h" + +static void dwc3_drd_update(struct dwc3 *dwc) +{ + int id; + + id = extcon_get_state(dwc->edev, EXTCON_USB_HOST); + if (id < 0) + id = 0; + + dwc3_set_mode(dwc, id ? + DWC3_GCTL_PRTCAP_HOST : + DWC3_GCTL_PRTCAP_DEVICE); +} + +static int dwc3_drd_notifier(struct notifier_block *nb, + unsigned long event, void *ptr) +{ + struct dwc3 *dwc = container_of(nb, struct dwc3, edev_nb); + + dwc3_set_mode(dwc, event ? + DWC3_GCTL_PRTCAP_HOST : + DWC3_GCTL_PRTCAP_DEVICE); + + return NOTIFY_DONE; +} + +int dwc3_drd_init(struct dwc3 *dwc) +{ + int ret; + + if (dwc->dev->of_node) { + if (of_property_read_bool(dwc->dev->of_node, "extcon")) + dwc->edev = extcon_get_edev_by_phandle(dwc->dev, 0); + + if (IS_ERR(dwc->edev)) + return PTR_ERR(dwc->edev); + + dwc->edev_nb.notifier_call = dwc3_drd_notifier; + ret = extcon_register_notifier(dwc->edev, EXTCON_USB_HOST, + &dwc->edev_nb); + if (ret < 0) { + dev_err(dwc->dev, "couldn't register cable notifier\n"); + return ret; + } + } + + dwc3_drd_update(dwc); + + return 0; +} + +void dwc3_drd_exit(struct dwc3 *dwc) +{ + extcon_unregister_notifier(dwc->edev, EXTCON_USB_HOST, + &dwc->edev_nb); + + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); + flush_work(&dwc->drd_work); + dwc3_gadget_exit(dwc); +} diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index 1515d45ebcec..98f74ff66120 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -147,53 +147,53 @@ static int dwc3_exynos_probe(struct platform_device *pdev) exynos->vdd33 = devm_regulator_get(dev, "vdd33"); if (IS_ERR(exynos->vdd33)) { ret = PTR_ERR(exynos->vdd33); - goto err2; + goto vdd33_err; } ret = regulator_enable(exynos->vdd33); if (ret) { dev_err(dev, "Failed to enable VDD33 supply\n"); - goto err2; + goto vdd33_err; } exynos->vdd10 = devm_regulator_get(dev, "vdd10"); if (IS_ERR(exynos->vdd10)) { ret = PTR_ERR(exynos->vdd10); - goto err3; + goto vdd10_err; } ret = regulator_enable(exynos->vdd10); if (ret) { dev_err(dev, "Failed to enable VDD10 supply\n"); - goto err3; + goto vdd10_err; } ret = dwc3_exynos_register_phys(exynos); if (ret) { dev_err(dev, "couldn't register PHYs\n"); - goto err4; + goto phys_err; } if (node) { ret = of_platform_populate(node, NULL, NULL, dev); if (ret) { dev_err(dev, "failed to add dwc3 core\n"); - goto err5; + goto populate_err; } } else { dev_err(dev, "no device node, failed to add dwc3 core\n"); ret = -ENODEV; - goto err5; + goto populate_err; } return 0; -err5: +populate_err: platform_device_unregister(exynos->usb2_phy); platform_device_unregister(exynos->usb3_phy); -err4: +phys_err: regulator_disable(exynos->vdd10); -err3: +vdd10_err: regulator_disable(exynos->vdd33); -err2: +vdd33_err: clk_disable_unprepare(exynos->axius_clk); axius_clk_err: clk_disable_unprepare(exynos->susp_clk); diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index f8d0747810e7..98926504b55b 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -79,40 +79,40 @@ #define USBOTGSS_DEBUG_OFFSET 0x0600 /* SYSCONFIG REGISTER */ -#define USBOTGSS_SYSCONFIG_DMADISABLE (1 << 16) +#define USBOTGSS_SYSCONFIG_DMADISABLE BIT(16) /* IRQ_EOI REGISTER */ -#define USBOTGSS_IRQ_EOI_LINE_NUMBER (1 << 0) +#define USBOTGSS_IRQ_EOI_LINE_NUMBER BIT(0) /* IRQS0 BITS */ -#define USBOTGSS_IRQO_COREIRQ_ST (1 << 0) +#define USBOTGSS_IRQO_COREIRQ_ST BIT(0) /* IRQMISC BITS */ -#define USBOTGSS_IRQMISC_DMADISABLECLR (1 << 17) -#define USBOTGSS_IRQMISC_OEVT (1 << 16) -#define USBOTGSS_IRQMISC_DRVVBUS_RISE (1 << 13) -#define USBOTGSS_IRQMISC_CHRGVBUS_RISE (1 << 12) -#define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE (1 << 11) -#define USBOTGSS_IRQMISC_IDPULLUP_RISE (1 << 8) -#define USBOTGSS_IRQMISC_DRVVBUS_FALL (1 << 5) -#define USBOTGSS_IRQMISC_CHRGVBUS_FALL (1 << 4) -#define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL (1 << 3) -#define USBOTGSS_IRQMISC_IDPULLUP_FALL (1 << 0) +#define USBOTGSS_IRQMISC_DMADISABLECLR BIT(17) +#define USBOTGSS_IRQMISC_OEVT BIT(16) +#define USBOTGSS_IRQMISC_DRVVBUS_RISE BIT(13) +#define USBOTGSS_IRQMISC_CHRGVBUS_RISE BIT(12) +#define USBOTGSS_IRQMISC_DISCHRGVBUS_RISE BIT(11) +#define USBOTGSS_IRQMISC_IDPULLUP_RISE BIT(8) +#define USBOTGSS_IRQMISC_DRVVBUS_FALL BIT(5) +#define USBOTGSS_IRQMISC_CHRGVBUS_FALL BIT(4) +#define USBOTGSS_IRQMISC_DISCHRGVBUS_FALL BIT(3) +#define USBOTGSS_IRQMISC_IDPULLUP_FALL BIT(0) /* UTMI_OTG_STATUS REGISTER */ -#define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS (1 << 5) -#define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS (1 << 4) -#define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS (1 << 3) -#define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP (1 << 0) +#define USBOTGSS_UTMI_OTG_STATUS_DRVVBUS BIT(5) +#define USBOTGSS_UTMI_OTG_STATUS_CHRGVBUS BIT(4) +#define USBOTGSS_UTMI_OTG_STATUS_DISCHRGVBUS BIT(3) +#define USBOTGSS_UTMI_OTG_STATUS_IDPULLUP BIT(0) /* UTMI_OTG_CTRL REGISTER */ -#define USBOTGSS_UTMI_OTG_CTRL_SW_MODE (1 << 31) -#define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT (1 << 9) -#define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE (1 << 8) -#define USBOTGSS_UTMI_OTG_CTRL_IDDIG (1 << 4) -#define USBOTGSS_UTMI_OTG_CTRL_SESSEND (1 << 3) -#define USBOTGSS_UTMI_OTG_CTRL_SESSVALID (1 << 2) -#define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID (1 << 1) +#define USBOTGSS_UTMI_OTG_CTRL_SW_MODE BIT(31) +#define USBOTGSS_UTMI_OTG_CTRL_POWERPRESENT BIT(9) +#define USBOTGSS_UTMI_OTG_CTRL_TXBITSTUFFENABLE BIT(8) +#define USBOTGSS_UTMI_OTG_CTRL_IDDIG BIT(4) +#define USBOTGSS_UTMI_OTG_CTRL_SESSEND BIT(3) +#define USBOTGSS_UTMI_OTG_CTRL_SESSVALID BIT(2) +#define USBOTGSS_UTMI_OTG_CTRL_VBUSVALID BIT(1) struct dwc3_omap { struct device *dev; diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index e689cede9b0e..a78c78e7a8c3 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -39,14 +39,13 @@ static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep); static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, struct dwc3_ep *dep, struct dwc3_request *req); -static void dwc3_ep0_prepare_one_trb(struct dwc3 *dwc, u8 epnum, +static void dwc3_ep0_prepare_one_trb(struct dwc3_ep *dep, dma_addr_t buf_dma, u32 len, u32 type, bool chain) { struct dwc3_trb *trb; - struct dwc3_ep *dep; - - dep = dwc->eps[epnum]; + struct dwc3 *dwc; + dwc = dep->dwc; trb = &dwc->ep0_trb[dep->trb_enqueue]; if (chain) @@ -69,16 +68,17 @@ static void dwc3_ep0_prepare_one_trb(struct dwc3 *dwc, u8 epnum, trace_dwc3_prepare_trb(dep, trb); } -static int dwc3_ep0_start_trans(struct dwc3 *dwc, u8 epnum) +static int dwc3_ep0_start_trans(struct dwc3_ep *dep) { struct dwc3_gadget_ep_cmd_params params; - struct dwc3_ep *dep; + struct dwc3 *dwc; int ret; - dep = dwc->eps[epnum]; if (dep->flags & DWC3_EP_BUSY) return 0; + dwc = dep->dwc; + memset(¶ms, 0, sizeof(params)); params.param0 = upper_32_bits(dwc->ep0_trb_addr); params.param1 = lower_32_bits(dwc->ep0_trb_addr); @@ -279,13 +279,15 @@ int dwc3_gadget_ep0_set_halt(struct usb_ep *ep, int value) void dwc3_ep0_out_start(struct dwc3 *dwc) { + struct dwc3_ep *dep; int ret; complete(&dwc->ep0_in_setup); - dwc3_ep0_prepare_one_trb(dwc, 0, dwc->ctrl_req_addr, 8, + dep = dwc->eps[0]; + dwc3_ep0_prepare_one_trb(dep, dwc->ep0_trb_addr, 8, DWC3_TRBCTL_CONTROL_SETUP, false); - ret = dwc3_ep0_start_trans(dwc, 0); + ret = dwc3_ep0_start_trans(dep); WARN_ON(ret < 0); } @@ -794,7 +796,7 @@ static int dwc3_ep0_std_request(struct dwc3 *dwc, struct usb_ctrlrequest *ctrl) static void dwc3_ep0_inspect_setup(struct dwc3 *dwc, const struct dwc3_event_depevt *event) { - struct usb_ctrlrequest *ctrl = dwc->ctrl_req; + struct usb_ctrlrequest *ctrl = (void *) dwc->ep0_trb; int ret = -EINVAL; u32 len; @@ -834,7 +836,6 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, struct usb_request *ur; struct dwc3_trb *trb; struct dwc3_ep *ep0; - unsigned transfer_size = 0; unsigned maxp; unsigned remaining_ur_length; void *buf; @@ -847,9 +848,7 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, ep0 = dwc->eps[0]; dwc->ep0_next_event = DWC3_EP0_NRDY_STATUS; - trb = dwc->ep0_trb; - trace_dwc3_complete_trb(ep0, trb); r = next_request(&ep0->pending_list); @@ -870,58 +869,23 @@ static void dwc3_ep0_complete_data(struct dwc3 *dwc, remaining_ur_length = ur->length; length = trb->size & DWC3_TRB_SIZE_MASK; - maxp = ep0->endpoint.maxpacket; - - if (dwc->ep0_bounced) { - /* - * Handle the first TRB before handling the bounce buffer if - * the request length is greater than the bounce buffer size - */ - if (ur->length > DWC3_EP0_BOUNCE_SIZE) { - transfer_size = ALIGN(ur->length - maxp, maxp); - transferred = transfer_size - length; - buf = (u8 *)buf + transferred; - ur->actual += transferred; - remaining_ur_length -= transferred; - - trb++; - length = trb->size & DWC3_TRB_SIZE_MASK; - - ep0->trb_enqueue = 0; - } - - transfer_size = roundup((ur->length - transfer_size), - maxp); - - transferred = min_t(u32, remaining_ur_length, - transfer_size - length); - memcpy(buf, dwc->ep0_bounce, transferred); - } else { - transferred = ur->length - length; - } - + transferred = ur->length - length; ur->actual += transferred; - if ((epnum & 1) && ur->actual < ur->length) { - /* for some reason we did not get everything out */ + if ((IS_ALIGNED(ur->length, ep0->endpoint.maxpacket) && + ur->length && ur->zero) || dwc->ep0_bounced) { + trb++; + trb->ctrl &= ~DWC3_TRB_CTRL_HWO; + trace_dwc3_complete_trb(ep0, trb); + ep0->trb_enqueue = 0; + dwc->ep0_bounced = false; + } + if ((epnum & 1) && ur->actual < ur->length) dwc3_ep0_stall_and_restart(dwc); - } else { + else dwc3_gadget_giveback(ep0, r, 0); - - if (IS_ALIGNED(ur->length, ep0->endpoint.maxpacket) && - ur->length && ur->zero) { - int ret; - - dwc->ep0_next_event = DWC3_EP0_COMPLETE; - - dwc3_ep0_prepare_one_trb(dwc, epnum, dwc->ctrl_req_addr, - 0, DWC3_TRBCTL_CONTROL_DATA, false); - ret = dwc3_ep0_start_trans(dwc, epnum); - WARN_ON(ret < 0); - } - } } static void dwc3_ep0_complete_status(struct dwc3 *dwc, @@ -997,14 +961,13 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, req->direction = !!dep->number; if (req->request.length == 0) { - dwc3_ep0_prepare_one_trb(dwc, dep->number, - dwc->ctrl_req_addr, 0, + dwc3_ep0_prepare_one_trb(dep, dwc->ep0_trb_addr, 0, DWC3_TRBCTL_CONTROL_DATA, false); - ret = dwc3_ep0_start_trans(dwc, dep->number); + ret = dwc3_ep0_start_trans(dep); } else if (!IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) && (dep->number == 0)) { - u32 transfer_size = 0; u32 maxpacket; + u32 rem; ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, dep->number); @@ -1012,36 +975,55 @@ static void __dwc3_ep0_do_control_data(struct dwc3 *dwc, return; maxpacket = dep->endpoint.maxpacket; + rem = req->request.length % maxpacket; + dwc->ep0_bounced = true; - if (req->request.length > DWC3_EP0_BOUNCE_SIZE) { - transfer_size = ALIGN(req->request.length - maxpacket, - maxpacket); - dwc3_ep0_prepare_one_trb(dwc, dep->number, - req->request.dma, - transfer_size, - DWC3_TRBCTL_CONTROL_DATA, - true); - } - - transfer_size = roundup((req->request.length - transfer_size), - maxpacket); + /* prepare normal TRB */ + dwc3_ep0_prepare_one_trb(dep, req->request.dma, + req->request.length, + DWC3_TRBCTL_CONTROL_DATA, + true); + + /* Now prepare one extra TRB to align transfer size */ + dwc3_ep0_prepare_one_trb(dep, dwc->bounce_addr, + maxpacket - rem, + DWC3_TRBCTL_CONTROL_DATA, + false); + ret = dwc3_ep0_start_trans(dep); + } else if (IS_ALIGNED(req->request.length, dep->endpoint.maxpacket) && + req->request.length && req->request.zero) { + u32 maxpacket; + u32 rem; - dwc->ep0_bounced = true; + ret = usb_gadget_map_request_by_dev(dwc->sysdev, + &req->request, dep->number); + if (ret) + return; - dwc3_ep0_prepare_one_trb(dwc, dep->number, - dwc->ep0_bounce_addr, transfer_size, - DWC3_TRBCTL_CONTROL_DATA, false); - ret = dwc3_ep0_start_trans(dwc, dep->number); + maxpacket = dep->endpoint.maxpacket; + rem = req->request.length % maxpacket; + + /* prepare normal TRB */ + dwc3_ep0_prepare_one_trb(dep, req->request.dma, + req->request.length, + DWC3_TRBCTL_CONTROL_DATA, + true); + + /* Now prepare one extra TRB to align transfer size */ + dwc3_ep0_prepare_one_trb(dep, dwc->bounce_addr, + 0, DWC3_TRBCTL_CONTROL_DATA, + false); + ret = dwc3_ep0_start_trans(dep); } else { ret = usb_gadget_map_request_by_dev(dwc->sysdev, &req->request, dep->number); if (ret) return; - dwc3_ep0_prepare_one_trb(dwc, dep->number, req->request.dma, + dwc3_ep0_prepare_one_trb(dep, req->request.dma, req->request.length, DWC3_TRBCTL_CONTROL_DATA, false); - ret = dwc3_ep0_start_trans(dwc, dep->number); + ret = dwc3_ep0_start_trans(dep); } WARN_ON(ret < 0); @@ -1055,9 +1037,8 @@ static int dwc3_ep0_start_control_status(struct dwc3_ep *dep) type = dwc->three_stage_setup ? DWC3_TRBCTL_CONTROL_STATUS3 : DWC3_TRBCTL_CONTROL_STATUS2; - dwc3_ep0_prepare_one_trb(dwc, dep->number, - dwc->ctrl_req_addr, 0, type, false); - return dwc3_ep0_start_trans(dwc, dep->number); + dwc3_ep0_prepare_one_trb(dep, dwc->ep0_trb_addr, 0, type, false); + return dwc3_ep0_start_trans(dep); } static void __dwc3_ep0_do_control_status(struct dwc3 *dwc, struct dwc3_ep *dep) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 79e7a3480d51..6f6f0b3be3ad 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -171,7 +171,6 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, int status) { struct dwc3 *dwc = dep->dwc; - unsigned int unmap_after_complete = false; req->started = false; list_del(&req->list); @@ -181,19 +180,8 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, if (req->request.status == -EINPROGRESS) req->request.status = status; - /* - * NOTICE we don't want to unmap before calling ->complete() if we're - * dealing with a bounced ep0 request. If we unmap it here, we would end - * up overwritting the contents of req->buf and this could confuse the - * gadget driver. - */ - if (dwc->ep0_bounced && dep->number <= 1) { - dwc->ep0_bounced = false; - unmap_after_complete = true; - } else { - usb_gadget_unmap_request_by_dev(dwc->sysdev, - &req->request, req->direction); - } + usb_gadget_unmap_request_by_dev(dwc->sysdev, + &req->request, req->direction); trace_dwc3_gadget_giveback(req); @@ -201,10 +189,6 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, usb_gadget_giveback_request(&dep->endpoint, &req->request); spin_lock(&dwc->lock); - if (unmap_after_complete) - usb_gadget_unmap_request_by_dev(dwc->sysdev, - &req->request, req->direction); - if (dep->number > 1) pm_runtime_put(dwc->dev); } @@ -1060,6 +1044,22 @@ static void dwc3_prepare_one_trb_linear(struct dwc3_ep *dep, false, 0, req->request.stream_id, req->request.short_not_ok, req->request.no_interrupt); + } else if (req->request.zero && req->request.length && + (IS_ALIGNED(req->request.length,dep->endpoint.maxpacket))) { + struct dwc3 *dwc = dep->dwc; + struct dwc3_trb *trb; + + req->zero = true; + + /* prepare normal TRB */ + dwc3_prepare_one_trb(dep, req, true, 0); + + /* Now prepare one extra TRB to handle ZLP */ + trb = &dep->trb_pool[dep->trb_enqueue]; + __dwc3_prepare_one_trb(dep, trb, dwc->bounce_addr, 0, + false, 0, req->request.stream_id, + req->request.short_not_ok, + req->request.no_interrupt); } else { dwc3_prepare_one_trb(dep, req, false, 0); } @@ -1184,8 +1184,11 @@ static void __dwc3_gadget_start_isoc(struct dwc3 *dwc, return; } - /* 4 micro frames in the future */ - uf = cur_uf + dep->interval * 4; + /* + * Schedule the first trb for one interval in the future or at + * least 4 microframes. + */ + uf = cur_uf + max_t(u32, 4, dep->interval); __dwc3_gadget_kick_transfer(dep, uf); } @@ -1272,31 +1275,6 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) return ret; } -static void __dwc3_gadget_ep_zlp_complete(struct usb_ep *ep, - struct usb_request *request) -{ - dwc3_gadget_ep_free_request(ep, request); -} - -static int __dwc3_gadget_ep_queue_zlp(struct dwc3 *dwc, struct dwc3_ep *dep) -{ - struct dwc3_request *req; - struct usb_request *request; - struct usb_ep *ep = &dep->endpoint; - - request = dwc3_gadget_ep_alloc_request(ep, GFP_ATOMIC); - if (!request) - return -ENOMEM; - - request->length = 0; - request->buf = dwc->zlp_buf; - request->complete = __dwc3_gadget_ep_zlp_complete; - - req = to_dwc3_request(request); - - return __dwc3_gadget_ep_queue(dep, req); -} - static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, gfp_t gfp_flags) { @@ -1310,17 +1288,6 @@ static int dwc3_gadget_ep_queue(struct usb_ep *ep, struct usb_request *request, spin_lock_irqsave(&dwc->lock, flags); ret = __dwc3_gadget_ep_queue(dep, req); - - /* - * Okay, here's the thing, if gadget driver has requested for a ZLP by - * setting request->zero, instead of doing magic, we will just queue an - * extra usb_request ourselves so that it gets handled the same way as - * any other request. - */ - if (ret == 0 && request->zero && request->length && - (request->length % ep->maxpacket == 0)) - ret = __dwc3_gadget_ep_queue_zlp(dwc, dep); - spin_unlock_irqrestore(&dwc->lock, flags); return ret; @@ -1400,7 +1367,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, dwc3_ep_inc_deq(dep); } - if (r->unaligned) { + if (r->unaligned || r->zero) { trb = r->trb + r->num_pending_sgs + 1; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); @@ -1411,7 +1378,7 @@ static int dwc3_gadget_ep_dequeue(struct usb_ep *ep, trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); - if (r->unaligned) { + if (r->unaligned || r->zero) { trb = r->trb + 1; trb->ctrl &= ~DWC3_TRB_CTRL_HWO; dwc3_ep_inc_deq(dep); @@ -2006,14 +1973,15 @@ static const struct usb_gadget_ops dwc3_gadget_ops = { /* -------------------------------------------------------------------------- */ -static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, - u8 num, u32 direction) +static int dwc3_gadget_init_endpoints(struct dwc3 *dwc, u8 num) { struct dwc3_ep *dep; - u8 i; + u8 epnum; + + INIT_LIST_HEAD(&dwc->gadget.ep_list); - for (i = 0; i < num; i++) { - u8 epnum = (i << 1) | (direction ? 1 : 0); + for (epnum = 0; epnum < num; epnum++) { + bool direction = epnum & 1; dep = kzalloc(sizeof(*dep), GFP_KERNEL); if (!dep) @@ -2021,12 +1989,12 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, dep->dwc = dwc; dep->number = epnum; - dep->direction = !!direction; + dep->direction = direction; dep->regs = dwc->regs + DWC3_DEP_BASE(epnum); dwc->eps[epnum] = dep; snprintf(dep->name, sizeof(dep->name), "ep%d%s", epnum >> 1, - (epnum & 1) ? "in" : "out"); + direction ? "in" : "out"); dep->endpoint.name = dep->name; @@ -2053,7 +2021,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, /* MDWIDTH is represented in bits, we need it in bytes */ mdwidth /= 8; - size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(i)); + size = dwc3_readl(dwc->regs, DWC3_GTXFIFOSIZ(epnum >> 1)); size = DWC3_GTXFIFOSIZ_TXFDEF(size); /* FIFO Depth is in MDWDITH bytes. Multiply */ @@ -2103,7 +2071,7 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, dep->endpoint.caps.type_int = true; } - dep->endpoint.caps.dir_in = !!direction; + dep->endpoint.caps.dir_in = direction; dep->endpoint.caps.dir_out = !direction; INIT_LIST_HEAD(&dep->pending_list); @@ -2113,27 +2081,6 @@ static int dwc3_gadget_init_hw_endpoints(struct dwc3 *dwc, return 0; } -static int dwc3_gadget_init_endpoints(struct dwc3 *dwc) -{ - int ret; - - INIT_LIST_HEAD(&dwc->gadget.ep_list); - - ret = dwc3_gadget_init_hw_endpoints(dwc, dwc->num_out_eps, 0); - if (ret < 0) { - dev_err(dwc->dev, "failed to initialize OUT endpoints\n"); - return ret; - } - - ret = dwc3_gadget_init_hw_endpoints(dwc, dwc->num_in_eps, 1); - if (ret < 0) { - dev_err(dwc->dev, "failed to initialize IN endpoints\n"); - return ret; - } - - return 0; -} - static void dwc3_gadget_free_endpoints(struct dwc3 *dwc) { struct dwc3_ep *dep; @@ -2197,7 +2144,7 @@ static int __dwc3_cleanup_done_trbs(struct dwc3 *dwc, struct dwc3_ep *dep, * with one TRB pending in the ring. We need to manually clear HWO bit * from that TRB. */ - if (req->unaligned && (trb->ctrl & DWC3_TRB_CTRL_HWO)) { + if ((req->zero || req->unaligned) && (trb->ctrl & DWC3_TRB_CTRL_HWO)) { trb->ctrl &= ~DWC3_TRB_CTRL_HWO; return 1; } @@ -2291,11 +2238,12 @@ static int dwc3_cleanup_done_reqs(struct dwc3 *dwc, struct dwc3_ep *dep, event, status, chain); } - if (req->unaligned) { + if (req->unaligned || req->zero) { trb = &dep->trb_pool[dep->trb_dequeue]; ret = __dwc3_cleanup_done_trbs(dwc, dep, req, trb, event, status, false); req->unaligned = false; + req->zero = false; } req->request.actual = length - req->remaining; @@ -3161,49 +3109,26 @@ int dwc3_gadget_init(struct dwc3 *dwc) dwc->irq_gadget = irq; - dwc->ctrl_req = dma_alloc_coherent(dwc->sysdev, sizeof(*dwc->ctrl_req), - &dwc->ctrl_req_addr, GFP_KERNEL); - if (!dwc->ctrl_req) { - dev_err(dwc->dev, "failed to allocate ctrl request\n"); - ret = -ENOMEM; - goto err0; - } - dwc->ep0_trb = dma_alloc_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, &dwc->ep0_trb_addr, GFP_KERNEL); if (!dwc->ep0_trb) { dev_err(dwc->dev, "failed to allocate ep0 trb\n"); ret = -ENOMEM; - goto err1; + goto err0; } - dwc->setup_buf = kzalloc(DWC3_EP0_BOUNCE_SIZE, GFP_KERNEL); + dwc->setup_buf = kzalloc(DWC3_EP0_SETUP_SIZE, GFP_KERNEL); if (!dwc->setup_buf) { ret = -ENOMEM; - goto err2; - } - - dwc->ep0_bounce = dma_alloc_coherent(dwc->sysdev, - DWC3_EP0_BOUNCE_SIZE, &dwc->ep0_bounce_addr, - GFP_KERNEL); - if (!dwc->ep0_bounce) { - dev_err(dwc->dev, "failed to allocate ep0 bounce buffer\n"); - ret = -ENOMEM; - goto err3; - } - - dwc->zlp_buf = kzalloc(DWC3_ZLP_BUF_SIZE, GFP_KERNEL); - if (!dwc->zlp_buf) { - ret = -ENOMEM; - goto err4; + goto err1; } dwc->bounce = dma_alloc_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, &dwc->bounce_addr, GFP_KERNEL); if (!dwc->bounce) { ret = -ENOMEM; - goto err5; + goto err2; } init_completion(&dwc->ep0_in_setup); @@ -3241,39 +3166,31 @@ int dwc3_gadget_init(struct dwc3 *dwc) * sure we're starting from a well known location. */ - ret = dwc3_gadget_init_endpoints(dwc); + ret = dwc3_gadget_init_endpoints(dwc, dwc->num_eps); if (ret) - goto err6; + goto err3; ret = usb_add_gadget_udc(dwc->dev, &dwc->gadget); if (ret) { dev_err(dwc->dev, "failed to register udc\n"); - goto err6; + goto err4; } return 0; -err6: - dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce, - dwc->bounce_addr); - -err5: - kfree(dwc->zlp_buf); err4: dwc3_gadget_free_endpoints(dwc); - dma_free_coherent(dwc->sysdev, DWC3_EP0_BOUNCE_SIZE, - dwc->ep0_bounce, dwc->ep0_bounce_addr); err3: - kfree(dwc->setup_buf); + dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce, + dwc->bounce_addr); err2: - dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, - dwc->ep0_trb, dwc->ep0_trb_addr); + kfree(dwc->setup_buf); err1: - dma_free_coherent(dwc->sysdev, sizeof(*dwc->ctrl_req), - dwc->ctrl_req, dwc->ctrl_req_addr); + dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, + dwc->ep0_trb, dwc->ep0_trb_addr); err0: return ret; @@ -3284,22 +3201,12 @@ err0: void dwc3_gadget_exit(struct dwc3 *dwc) { usb_del_gadget_udc(&dwc->gadget); - dwc3_gadget_free_endpoints(dwc); - dma_free_coherent(dwc->sysdev, DWC3_BOUNCE_SIZE, dwc->bounce, - dwc->bounce_addr); - dma_free_coherent(dwc->sysdev, DWC3_EP0_BOUNCE_SIZE, - dwc->ep0_bounce, dwc->ep0_bounce_addr); - + dwc->bounce_addr); kfree(dwc->setup_buf); - kfree(dwc->zlp_buf); - dma_free_coherent(dwc->sysdev, sizeof(*dwc->ep0_trb) * 2, - dwc->ep0_trb, dwc->ep0_trb_addr); - - dma_free_coherent(dwc->sysdev, sizeof(*dwc->ctrl_req), - dwc->ctrl_req, dwc->ctrl_req_addr); + dwc->ep0_trb, dwc->ep0_trb_addr); } int dwc3_gadget_suspend(struct dwc3 *dwc) diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 265e223ab645..e4602d0e515b 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -29,16 +29,16 @@ struct dwc3; /* DEPCFG parameter 1 */ #define DWC3_DEPCFG_INT_NUM(n) (((n) & 0x1f) << 0) -#define DWC3_DEPCFG_XFER_COMPLETE_EN (1 << 8) -#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN (1 << 9) -#define DWC3_DEPCFG_XFER_NOT_READY_EN (1 << 10) -#define DWC3_DEPCFG_FIFO_ERROR_EN (1 << 11) -#define DWC3_DEPCFG_STREAM_EVENT_EN (1 << 13) +#define DWC3_DEPCFG_XFER_COMPLETE_EN BIT(8) +#define DWC3_DEPCFG_XFER_IN_PROGRESS_EN BIT(9) +#define DWC3_DEPCFG_XFER_NOT_READY_EN BIT(10) +#define DWC3_DEPCFG_FIFO_ERROR_EN BIT(11) +#define DWC3_DEPCFG_STREAM_EVENT_EN BIT(12) #define DWC3_DEPCFG_BINTERVAL_M1(n) (((n) & 0xff) << 16) -#define DWC3_DEPCFG_STREAM_CAPABLE (1 << 24) +#define DWC3_DEPCFG_STREAM_CAPABLE BIT(24) #define DWC3_DEPCFG_EP_NUMBER(n) (((n) & 0x1f) << 25) -#define DWC3_DEPCFG_BULK_BASED (1 << 30) -#define DWC3_DEPCFG_FIFO_BASED (1 << 31) +#define DWC3_DEPCFG_BULK_BASED BIT(30) +#define DWC3_DEPCFG_FIFO_BASED BIT(31) /* DEPCFG parameter 0 */ #define DWC3_DEPCFG_EP_TYPE(n) (((n) & 0x3) << 1) @@ -47,10 +47,10 @@ struct dwc3; #define DWC3_DEPCFG_BURST_SIZE(n) (((n) & 0xf) << 22) #define DWC3_DEPCFG_DATA_SEQ_NUM(n) ((n) << 26) /* This applies for core versions earlier than 1.94a */ -#define DWC3_DEPCFG_IGN_SEQ_NUM (1 << 31) +#define DWC3_DEPCFG_IGN_SEQ_NUM BIT(31) /* These apply for core versions 1.94a and later */ #define DWC3_DEPCFG_ACTION_INIT (0 << 30) -#define DWC3_DEPCFG_ACTION_RESTORE (1 << 30) +#define DWC3_DEPCFG_ACTION_RESTORE BIT(30) #define DWC3_DEPCFG_ACTION_MODIFY (2 << 30) /* DEPXFERCFG parameter 0 */ diff --git a/drivers/usb/dwc3/trace.h b/drivers/usb/dwc3/trace.h index 2b124f94d858..f1bd444d22a3 100644 --- a/drivers/usb/dwc3/trace.h +++ b/drivers/usb/dwc3/trace.h @@ -27,31 +27,6 @@ #include "core.h" #include "debug.h" -DECLARE_EVENT_CLASS(dwc3_log_msg, - TP_PROTO(struct va_format *vaf), - TP_ARGS(vaf), - TP_STRUCT__entry(__dynamic_array(char, msg, DWC3_MSG_MAX)), - TP_fast_assign( - vsnprintf(__get_str(msg), DWC3_MSG_MAX, vaf->fmt, *vaf->va); - ), - TP_printk("%s", __get_str(msg)) -); - -DEFINE_EVENT(dwc3_log_msg, dwc3_gadget, - TP_PROTO(struct va_format *vaf), - TP_ARGS(vaf) -); - -DEFINE_EVENT(dwc3_log_msg, dwc3_core, - TP_PROTO(struct va_format *vaf), - TP_ARGS(vaf) -); - -DEFINE_EVENT(dwc3_log_msg, dwc3_ep0, - TP_PROTO(struct va_format *vaf), - TP_ARGS(vaf) -); - DECLARE_EVENT_CLASS(dwc3_log_io, TP_PROTO(void *base, u32 offset, u32 value), TP_ARGS(base, offset, value), @@ -198,7 +173,7 @@ DECLARE_EVENT_CLASS(dwc3_log_generic_cmd, __entry->param = param; __entry->status = status; ), - TP_printk("cmd '%s' [%d] param %08x --> status: %s", + TP_printk("cmd '%s' [%x] param %08x --> status: %s", dwc3_gadget_generic_cmd_string(__entry->cmd), __entry->cmd, __entry->param, dwc3_gadget_generic_cmd_status_string(__entry->status) @@ -298,36 +273,7 @@ DECLARE_EVENT_CLASS(dwc3_log_trb, __entry->ctrl & DWC3_TRB_CTRL_CSP ? 'S' : 's', __entry->ctrl & DWC3_TRB_CTRL_ISP_IMI ? 'S' : 's', __entry->ctrl & DWC3_TRB_CTRL_IOC ? 'C' : 'c', - ({char *s; - switch (__entry->ctrl & 0x3f0) { - case DWC3_TRBCTL_NORMAL: - s = "normal"; - break; - case DWC3_TRBCTL_CONTROL_SETUP: - s = "setup"; - break; - case DWC3_TRBCTL_CONTROL_STATUS2: - s = "status2"; - break; - case DWC3_TRBCTL_CONTROL_STATUS3: - s = "status3"; - break; - case DWC3_TRBCTL_CONTROL_DATA: - s = "data"; - break; - case DWC3_TRBCTL_ISOCHRONOUS_FIRST: - s = "isoc-first"; - break; - case DWC3_TRBCTL_ISOCHRONOUS: - s = "isoc"; - break; - case DWC3_TRBCTL_LINK_TRB: - s = "link"; - break; - default: - s = "UNKNOWN"; - break; - } s; }) + dwc3_trb_type_string(DWC3_TRBCTL_TYPE(__entry->ctrl)) ) ); diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 8ad203296079..c164d6b788c3 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -212,7 +212,7 @@ config USB_F_TCM # this first set of drivers all depend on bulk-capable hardware. config USB_CONFIGFS - tristate "USB functions configurable through configfs" + tristate "USB Gadget functions configurable through configfs" select USB_LIBCOMPOSITE help A Linux USB "gadget" can be set up through configfs. @@ -458,8 +458,9 @@ config USB_CONFIGFS_F_TCM UAS utilizes the USB 3.0 feature called streams support. choice - tristate "USB Gadget Drivers" + tristate "USB Gadget precomposed configurations" default USB_ETH + optional help A Linux "Gadget Driver" talks to the USB Peripheral Controller driver through the abstract "gadget" API. Some other operating @@ -476,6 +477,12 @@ choice not be able work with that controller, or might need to implement a less common variant of a device class protocol. + The available choices each represent a single precomposed USB + gadget configuration. In the device model, each option contains + both the device instantiation as a child for a USB gadget + controller, and the relevant drivers for each function declared + by the device. + source "drivers/usb/gadget/legacy/Kconfig" endchoice diff --git a/drivers/usb/gadget/function/f_fs.c b/drivers/usb/gadget/function/f_fs.c index a0085571824d..71dd27c0d7f2 100644 --- a/drivers/usb/gadget/function/f_fs.c +++ b/drivers/usb/gadget/function/f_fs.c @@ -246,7 +246,6 @@ EXPORT_SYMBOL_GPL(ffs_lock); static struct ffs_dev *_ffs_find_dev(const char *name); static struct ffs_dev *_ffs_alloc_dev(void); -static int _ffs_name_dev(struct ffs_dev *dev, const char *name); static void _ffs_free_dev(struct ffs_dev *dev); static void *ffs_acquire_dev(const char *dev_name); static void ffs_release_dev(struct ffs_data *ffs_data); @@ -1571,14 +1570,14 @@ static void ffs_data_get(struct ffs_data *ffs) { ENTER(); - atomic_inc(&ffs->ref); + refcount_inc(&ffs->ref); } static void ffs_data_opened(struct ffs_data *ffs) { ENTER(); - atomic_inc(&ffs->ref); + refcount_inc(&ffs->ref); if (atomic_add_return(1, &ffs->opened) == 1 && ffs->state == FFS_DEACTIVATED) { ffs->state = FFS_CLOSING; @@ -1590,7 +1589,7 @@ static void ffs_data_put(struct ffs_data *ffs) { ENTER(); - if (unlikely(atomic_dec_and_test(&ffs->ref))) { + if (unlikely(refcount_dec_and_test(&ffs->ref))) { pr_info("%s(): freeing\n", __func__); ffs_data_clear(ffs); BUG_ON(waitqueue_active(&ffs->ev.waitq) || @@ -1635,7 +1634,7 @@ static struct ffs_data *ffs_data_new(void) ENTER(); - atomic_set(&ffs->ref, 1); + refcount_set(&ffs->ref, 1); atomic_set(&ffs->opened, 0); ffs->state = FFS_READ_DESCRIPTORS; mutex_init(&ffs->mutex); @@ -3302,9 +3301,10 @@ static struct ffs_dev *_ffs_do_find_dev(const char *name) { struct ffs_dev *dev; + if (!name) + return NULL; + list_for_each_entry(dev, &ffs_devices, entry) { - if (!dev->name || !name) - continue; if (strcmp(dev->name, name) == 0) return dev; } @@ -3380,42 +3380,11 @@ static void ffs_free_inst(struct usb_function_instance *f) kfree(opts); } -#define MAX_INST_NAME_LEN 40 - static int ffs_set_inst_name(struct usb_function_instance *fi, const char *name) { - struct f_fs_opts *opts; - char *ptr; - const char *tmp; - int name_len, ret; - - name_len = strlen(name) + 1; - if (name_len > MAX_INST_NAME_LEN) + if (strlen(name) >= FIELD_SIZEOF(struct ffs_dev, name)) return -ENAMETOOLONG; - - ptr = kstrndup(name, name_len, GFP_KERNEL); - if (!ptr) - return -ENOMEM; - - opts = to_f_fs_opts(fi); - tmp = NULL; - - ffs_dev_lock(); - - tmp = opts->dev->name_allocated ? opts->dev->name : NULL; - ret = _ffs_name_dev(opts->dev, ptr); - if (ret) { - kfree(ptr); - ffs_dev_unlock(); - return ret; - } - opts->dev->name_allocated = true; - - ffs_dev_unlock(); - - kfree(tmp); - - return 0; + return ffs_name_dev(to_f_fs_opts(fi)->dev, name); } static struct usb_function_instance *ffs_alloc_inst(void) @@ -3545,32 +3514,19 @@ static struct ffs_dev *_ffs_alloc_dev(void) return dev; } -/* - * ffs_lock must be taken by the caller of this function - * The caller is responsible for "name" being available whenever f_fs needs it - */ -static int _ffs_name_dev(struct ffs_dev *dev, const char *name) +int ffs_name_dev(struct ffs_dev *dev, const char *name) { struct ffs_dev *existing; + int ret = 0; - existing = _ffs_do_find_dev(name); - if (existing) - return -EBUSY; - - dev->name = name; - - return 0; -} + ffs_dev_lock(); -/* - * The caller is responsible for "name" being available whenever f_fs needs it - */ -int ffs_name_dev(struct ffs_dev *dev, const char *name) -{ - int ret; + existing = _ffs_do_find_dev(name); + if (!existing) + strlcpy(dev->name, name, ARRAY_SIZE(dev->name)); + else if (existing != dev) + ret = -EBUSY; - ffs_dev_lock(); - ret = _ffs_name_dev(dev, name); ffs_dev_unlock(); return ret; @@ -3600,8 +3556,6 @@ EXPORT_SYMBOL_GPL(ffs_single_dev); static void _ffs_free_dev(struct ffs_dev *dev) { list_del(&dev->entry); - if (dev->name_allocated) - kfree(dev->name); /* Clear the private_data pointer to stop incorrect dev access */ if (dev->ffs_data) diff --git a/drivers/usb/gadget/function/u_ether.c b/drivers/usb/gadget/function/u_ether.c index c3cab77181d4..a8b40d07e927 100644 --- a/drivers/usb/gadget/function/u_ether.c +++ b/drivers/usb/gadget/function/u_ether.c @@ -178,6 +178,7 @@ static void rx_complete(struct usb_ep *ep, struct usb_request *req); static int rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) { + struct usb_gadget *g = dev->gadget; struct sk_buff *skb; int retval = -ENOMEM; size_t size = 0; @@ -209,8 +210,11 @@ rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) */ size += sizeof(struct ethhdr) + dev->net->mtu + RX_EXTRA; size += dev->port_usb->header_len; - size += out->maxpacket - 1; - size -= size % out->maxpacket; + + if (g->quirk_ep_out_aligned_size) { + size += out->maxpacket - 1; + size -= size % out->maxpacket; + } if (dev->port_usb->is_fixed) size = max_t(size_t, size, dev->port_usb->fixed_out_len); @@ -401,13 +405,12 @@ done: static void rx_fill(struct eth_dev *dev, gfp_t gfp_flags) { struct usb_request *req; + struct usb_request *tmp; unsigned long flags; /* fill unused rxq slots with some skb */ spin_lock_irqsave(&dev->req_lock, flags); - while (!list_empty(&dev->rx_reqs)) { - req = container_of(dev->rx_reqs.next, - struct usb_request, list); + list_for_each_entry_safe(req, tmp, &dev->rx_reqs, list) { list_del_init(&req->list); spin_unlock_irqrestore(&dev->req_lock, flags); @@ -527,7 +530,7 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, return NETDEV_TX_BUSY; } - req = container_of(dev->tx_reqs.next, struct usb_request, list); + req = list_first_entry(&dev->tx_reqs, struct usb_request, list); list_del(&req->list); /* temporarily stop TX queue when the freelist empties */ @@ -1122,6 +1125,7 @@ void gether_disconnect(struct gether *link) { struct eth_dev *dev = link->ioport; struct usb_request *req; + struct usb_request *tmp; WARN_ON(!dev); if (!dev) @@ -1138,9 +1142,7 @@ void gether_disconnect(struct gether *link) */ usb_ep_disable(link->in_ep); spin_lock(&dev->req_lock); - while (!list_empty(&dev->tx_reqs)) { - req = container_of(dev->tx_reqs.next, - struct usb_request, list); + list_for_each_entry_safe(req, tmp, &dev->tx_reqs, list) { list_del(&req->list); spin_unlock(&dev->req_lock); @@ -1152,9 +1154,7 @@ void gether_disconnect(struct gether *link) usb_ep_disable(link->out_ep); spin_lock(&dev->req_lock); - while (!list_empty(&dev->rx_reqs)) { - req = container_of(dev->rx_reqs.next, - struct usb_request, list); + list_for_each_entry_safe(req, tmp, &dev->rx_reqs, list) { list_del(&req->list); spin_unlock(&dev->req_lock); diff --git a/drivers/usb/gadget/function/u_fs.h b/drivers/usb/gadget/function/u_fs.h index 4b6969451cdc..4378cc2fcac3 100644 --- a/drivers/usb/gadget/function/u_fs.h +++ b/drivers/usb/gadget/function/u_fs.h @@ -20,6 +20,7 @@ #include <linux/list.h> #include <linux/mutex.h> #include <linux/workqueue.h> +#include <linux/refcount.h> #ifdef VERBOSE_DEBUG #ifndef pr_vdebug @@ -39,15 +40,16 @@ struct f_fs_opts; struct ffs_dev { - const char *name; - bool name_allocated; - bool mounted; - bool desc_ready; - bool single; struct ffs_data *ffs_data; struct f_fs_opts *opts; struct list_head entry; + char name[41]; + + bool mounted; + bool desc_ready; + bool single; + int (*ffs_ready_callback)(struct ffs_data *ffs); void (*ffs_closed_callback)(struct ffs_data *ffs); void *(*ffs_acquire_dev_callback)(struct ffs_dev *dev); @@ -177,7 +179,7 @@ struct ffs_data { struct completion ep0req_completion; /* P: mutex */ /* reference counter */ - atomic_t ref; + refcount_t ref; /* how many files are opened (EP0 and others) */ atomic_t opened; diff --git a/drivers/usb/gadget/function/uvc_configfs.c b/drivers/usb/gadget/function/uvc_configfs.c index 4e037d2a7a60..844cb738bafd 100644 --- a/drivers/usb/gadget/function/uvc_configfs.c +++ b/drivers/usb/gadget/function/uvc_configfs.c @@ -2125,7 +2125,7 @@ static struct configfs_item_operations uvc_item_ops = { .release = uvc_attr_release, }; -#define UVCG_OPTS_ATTR(cname, conv, str2u, uxx, vnoc, limit) \ +#define UVCG_OPTS_ATTR(cname, aname, conv, str2u, uxx, vnoc, limit) \ static ssize_t f_uvc_opts_##cname##_show( \ struct config_item *item, char *page) \ { \ @@ -2168,16 +2168,16 @@ end: \ return ret; \ } \ \ -UVC_ATTR(f_uvc_opts_, cname, aname) +UVC_ATTR(f_uvc_opts_, cname, cname) #define identity_conv(x) (x) -UVCG_OPTS_ATTR(streaming_interval, identity_conv, kstrtou8, u8, identity_conv, - 16); -UVCG_OPTS_ATTR(streaming_maxpacket, le16_to_cpu, kstrtou16, u16, le16_to_cpu, - 3072); -UVCG_OPTS_ATTR(streaming_maxburst, identity_conv, kstrtou8, u8, identity_conv, - 15); +UVCG_OPTS_ATTR(streaming_interval, streaming_interval, identity_conv, + kstrtou8, u8, identity_conv, 16); +UVCG_OPTS_ATTR(streaming_maxpacket, streaming_maxpacket, le16_to_cpu, + kstrtou16, u16, le16_to_cpu, 3072); +UVCG_OPTS_ATTR(streaming_maxburst, streaming_maxburst, identity_conv, + kstrtou8, u8, identity_conv, 15); #undef identity_conv diff --git a/drivers/usb/gadget/legacy/inode.c b/drivers/usb/gadget/legacy/inode.c index a2c916869293..b9ca0a26cbd9 100644 --- a/drivers/usb/gadget/legacy/inode.c +++ b/drivers/usb/gadget/legacy/inode.c @@ -27,6 +27,7 @@ #include <linux/mmu_context.h> #include <linux/aio.h> #include <linux/uio.h> +#include <linux/refcount.h> #include <linux/device.h> #include <linux/moduleparam.h> @@ -114,7 +115,7 @@ enum ep0_state { struct dev_data { spinlock_t lock; - atomic_t count; + refcount_t count; enum ep0_state state; /* P: lock */ struct usb_gadgetfs_event event [N_EVENT]; unsigned ev_next; @@ -150,12 +151,12 @@ struct dev_data { static inline void get_dev (struct dev_data *data) { - atomic_inc (&data->count); + refcount_inc (&data->count); } static void put_dev (struct dev_data *data) { - if (likely (!atomic_dec_and_test (&data->count))) + if (likely (!refcount_dec_and_test (&data->count))) return; /* needs no more cleanup */ BUG_ON (waitqueue_active (&data->wait)); @@ -170,7 +171,7 @@ static struct dev_data *dev_new (void) if (!dev) return NULL; dev->state = STATE_DEV_DISABLED; - atomic_set (&dev->count, 1); + refcount_set (&dev->count, 1); spin_lock_init (&dev->lock); INIT_LIST_HEAD (&dev->epfiles); init_waitqueue_head (&dev->wait); @@ -190,7 +191,7 @@ enum ep_state { struct ep_data { struct mutex lock; enum ep_state state; - atomic_t count; + refcount_t count; struct dev_data *dev; /* must hold dev->lock before accessing ep or req */ struct usb_ep *ep; @@ -205,12 +206,12 @@ struct ep_data { static inline void get_ep (struct ep_data *data) { - atomic_inc (&data->count); + refcount_inc (&data->count); } static void put_ep (struct ep_data *data) { - if (likely (!atomic_dec_and_test (&data->count))) + if (likely (!refcount_dec_and_test (&data->count))) return; put_dev (data->dev); /* needs no more cleanup */ @@ -1561,7 +1562,7 @@ static int activate_ep_files (struct dev_data *dev) init_waitqueue_head (&data->wait); strncpy (data->name, ep->name, sizeof (data->name) - 1); - atomic_set (&data->count, 1); + refcount_set (&data->count, 1); data->dev = dev; get_dev (dev); diff --git a/drivers/usb/gadget/udc/Kconfig b/drivers/usb/gadget/udc/Kconfig index 4b69f28a9af9..1c14c283cc47 100644 --- a/drivers/usb/gadget/udc/Kconfig +++ b/drivers/usb/gadget/udc/Kconfig @@ -62,8 +62,9 @@ config USB_ATMEL_USBA The fifo_mode parameter is used to select endpoint allocation mode. fifo_mode = 0 is used to let the driver autoconfigure the endpoints. - In this case 2 banks are allocated for isochronous endpoints and - only one bank is allocated for the rest of the endpoints. + In this case, for ep1 2 banks are allocated if it works in isochronous + mode and only 1 bank otherwise. For the rest of the endpoints + only 1 bank is allocated. fifo_mode = 1 is a generic maximum fifo size (1024 bytes) configuration allowing the usage of ep1 - ep6 @@ -191,6 +192,7 @@ config USB_RENESAS_USBHS_UDC config USB_RENESAS_USB3 tristate 'Renesas USB3.0 Peripheral controller' depends on ARCH_RENESAS || COMPILE_TEST + depends on EXTCON help Renesas USB3.0 Peripheral controller is a USB peripheral controller that supports super, high, and full speed USB 3.0 data transfers. @@ -253,6 +255,20 @@ config USB_MV_U3D MARVELL PXA2128 Processor series include a super speed USB3.0 device controller, which support super speed USB peripheral. +config USB_SNP_CORE + depends on USB_AMD5536UDC + tristate + help + This enables core driver support for Synopsys USB 2.0 Device + controller. + + This will be enabled when PCI or Platform driver for this UDC is + selected. Currently, this will be enabled by USB_SNP_UDC_PLAT or + USB_AMD5536UDC options. + + This IP is different to the High Speed OTG IP that can be enabled + by selecting USB_DWC2 or USB_DWC3 options. + # # Controllers available in both integrated and discrete versions # @@ -277,7 +293,8 @@ source "drivers/usb/gadget/udc/bdc/Kconfig" config USB_AMD5536UDC tristate "AMD5536 UDC" - depends on PCI + depends on USB_PCI + select USB_SNP_CORE help The AMD5536 UDC is part of the AMD Geode CS5536, an x86 southbridge. It is a USB Highspeed DMA capable USB device controller. Beside ep0 @@ -285,6 +302,9 @@ config USB_AMD5536UDC The UDC port supports OTG operation, and may be used as a host port if it's not being used to implement peripheral or OTG roles. + This UDC is based on Synopsys USB device controller IP and selects + CONFIG_USB_SNP_CORE option to build the core driver. + Say "y" to link the driver statically, or "m" to build a dynamically linked module called "amd5536udc" and force all gadget drivers to also be dynamically linked. @@ -327,7 +347,7 @@ config USB_NET2272_DMA config USB_NET2280 tristate "NetChip NET228x / PLX USB3x8x" - depends on PCI + depends on USB_PCI help NetChip 2280 / 2282 is a PCI based USB peripheral controller which supports both full and high speed USB 2.0 data transfers. @@ -352,7 +372,7 @@ config USB_NET2280 config USB_GOKU tristate "Toshiba TC86C001 'Goku-S'" - depends on PCI + depends on USB_PCI help The Toshiba TC86C001 is a PCI device which includes controllers for full speed USB devices, IDE, I2C, SIO, plus a USB host (OHCI). @@ -366,7 +386,7 @@ config USB_GOKU config USB_EG20T tristate "Intel QUARK X1000/EG20T PCH/LAPIS Semiconductor IOH(ML7213/ML7831) UDC" - depends on PCI + depends on USB_PCI help This is a USB device driver for EG20T PCH. EG20T PCH is the platform controller hub that is used in Intel's diff --git a/drivers/usb/gadget/udc/Makefile b/drivers/usb/gadget/udc/Makefile index 98e74ed9f555..626e1f1c62da 100644 --- a/drivers/usb/gadget/udc/Makefile +++ b/drivers/usb/gadget/udc/Makefile @@ -10,7 +10,8 @@ obj-$(CONFIG_USB_GADGET) += udc-core.o obj-$(CONFIG_USB_DUMMY_HCD) += dummy_hcd.o obj-$(CONFIG_USB_NET2272) += net2272.o obj-$(CONFIG_USB_NET2280) += net2280.o -obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o +obj-$(CONFIG_USB_SNP_CORE) += amd5536udc.o +obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc_pci.o obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o obj-$(CONFIG_USB_GOKU) += goku_udc.o diff --git a/drivers/usb/gadget/udc/amd5536udc.c b/drivers/usb/gadget/udc/amd5536udc.c index ea03ca7ae29a..4ecd2f20ea48 100644 --- a/drivers/usb/gadget/udc/amd5536udc.c +++ b/drivers/usb/gadget/udc/amd5536udc.c @@ -11,27 +11,15 @@ */ /* - * The AMD5536 UDC is part of the x86 southbridge AMD Geode CS5536. - * It is a USB Highspeed DMA capable USB device controller. Beside ep0 it - * provides 4 IN and 4 OUT endpoints (bulk or interrupt type). - * - * Make sure that UDC is assigned to port 4 by BIOS settings (port can also - * be used as host port) and UOC bits PAD_EN and APU are set (should be done - * by BIOS init). - * - * UDC DMA requires 32-bit aligned buffers so DMA with gadget ether does not - * work without updating NET_IP_ALIGN. Or PIO mode (module param "use_dma=0") - * can be used with gadget ether. + * This file does the core driver implementation for the UDC that is based + * on Synopsys device controller IP (different than HS OTG IP) that is either + * connected through PCI bus or integrated to SoC platforms. */ -/* debug control */ -/* #define UDC_VERBOSE */ - /* Driver strings */ -#define UDC_MOD_DESCRIPTION "AMD 5536 UDC - USB Device Controller" +#define UDC_MOD_DESCRIPTION "Synopsys USB Device Controller" #define UDC_DRIVER_VERSION_STRING "01.00.0206" -/* system */ #include <linux/module.h> #include <linux/pci.h> #include <linux/kernel.h> @@ -46,23 +34,12 @@ #include <linux/ioctl.h> #include <linux/fs.h> #include <linux/dmapool.h> -#include <linux/moduleparam.h> -#include <linux/device.h> -#include <linux/io.h> -#include <linux/irq.h> #include <linux/prefetch.h> - +#include <linux/moduleparam.h> #include <asm/byteorder.h> #include <asm/unaligned.h> - -/* gadget stack */ -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -/* udc specific */ #include "amd5536udc.h" - static void udc_tasklet_disconnect(unsigned long); static void empty_req_queue(struct udc_ep *); static void udc_setup_endpoints(struct udc *dev); @@ -72,7 +49,7 @@ static void udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq); /* description */ static const char mod_desc[] = UDC_MOD_DESCRIPTION; -static const char name[] = "amd5536udc"; +static const char name[] = "udc"; /* structure to hold endpoint function pointers */ static const struct usb_ep_ops udc_ep_ops; @@ -208,30 +185,11 @@ static const struct { #undef EP_INFO }; -/* DMA usage flag */ -static bool use_dma = 1; -/* packet per buffer dma */ -static bool use_dma_ppb = 1; -/* with per descr. update */ -static bool use_dma_ppb_du; /* buffer fill mode */ static int use_dma_bufferfill_mode; -/* full speed only mode */ -static bool use_fullspeed; /* tx buffer size for high speed */ static unsigned long hs_tx_buf = UDC_EPIN_BUFF_SIZE; -/* module parameters */ -module_param(use_dma, bool, S_IRUGO); -MODULE_PARM_DESC(use_dma, "true for DMA"); -module_param(use_dma_ppb, bool, S_IRUGO); -MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode"); -module_param(use_dma_ppb_du, bool, S_IRUGO); -MODULE_PARM_DESC(use_dma_ppb_du, - "true for DMA in packet per buffer mode with descriptor update"); -module_param(use_fullspeed, bool, S_IRUGO); -MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only"); - /*---------------------------------------------------------------------------*/ /* Prints UDC device registers and endpoint irq registers */ static void print_regs(struct udc *dev) @@ -267,7 +225,7 @@ static void print_regs(struct udc *dev) } /* Masks unused interrupts */ -static int udc_mask_unused_interrupts(struct udc *dev) +int udc_mask_unused_interrupts(struct udc *dev) { u32 tmp; @@ -287,6 +245,7 @@ static int udc_mask_unused_interrupts(struct udc *dev) return 0; } +EXPORT_SYMBOL_GPL(udc_mask_unused_interrupts); /* Enables endpoint 0 interrupts */ static int udc_enable_ep0_interrupts(struct udc *dev) @@ -306,7 +265,7 @@ static int udc_enable_ep0_interrupts(struct udc *dev) } /* Enables device interrupts for SET_INTF and SET_CONFIG */ -static int udc_enable_dev_setup_interrupts(struct udc *dev) +int udc_enable_dev_setup_interrupts(struct udc *dev) { u32 tmp; @@ -325,6 +284,7 @@ static int udc_enable_dev_setup_interrupts(struct udc *dev) return 0; } +EXPORT_SYMBOL_GPL(udc_enable_dev_setup_interrupts); /* Calculates fifo start of endpoint based on preceding endpoints */ static int udc_set_txfifo_addr(struct udc_ep *ep) @@ -583,7 +543,7 @@ udc_alloc_request(struct usb_ep *usbep, gfp_t gfp) if (ep->dma) { /* ep0 in requests are allocated from data pool here */ - dma_desc = pci_pool_alloc(ep->dev->data_requests, gfp, + dma_desc = dma_pool_alloc(ep->dev->data_requests, gfp, &req->td_phys); if (!dma_desc) { kfree(req); @@ -608,27 +568,23 @@ udc_alloc_request(struct usb_ep *usbep, gfp_t gfp) } /* frees pci pool descriptors of a DMA chain */ -static int udc_free_dma_chain(struct udc *dev, struct udc_request *req) +static void udc_free_dma_chain(struct udc *dev, struct udc_request *req) { - int ret_val = 0; - struct udc_data_dma *td; - struct udc_data_dma *td_last = NULL; + struct udc_data_dma *td = req->td_data; unsigned int i; + dma_addr_t addr_next = 0x00; + dma_addr_t addr = (dma_addr_t)td->next; + DBG(dev, "free chain req = %p\n", req); /* do not free first desc., will be done by free for request */ - td_last = req->td_data; - td = phys_to_virt(td_last->next); - for (i = 1; i < req->chain_len; i++) { - pci_pool_free(dev->data_requests, td, - (dma_addr_t)td_last->next); - td_last = td; - td = phys_to_virt(td_last->next); + td = phys_to_virt(addr); + addr_next = (dma_addr_t)td->next; + dma_pool_free(dev->data_requests, td, addr); + addr = addr_next; } - - return ret_val; } /* Frees request packet, called by gadget driver */ @@ -652,7 +608,7 @@ udc_free_request(struct usb_ep *usbep, struct usb_request *usbreq) if (req->chain_len > 1) udc_free_dma_chain(ep->dev, req); - pci_pool_free(ep->dev->data_requests, req->td_data, + dma_pool_free(ep->dev->data_requests, req->td_data, req->td_phys); } kfree(req); @@ -847,7 +803,7 @@ static int udc_create_dma_chain( for (i = buf_len; i < bytes; i += buf_len) { /* create or determine next desc. */ if (create_new_chain) { - td = pci_pool_alloc(ep->dev->data_requests, + td = dma_pool_alloc(ep->dev->data_requests, gfp_flags, &dma_addr); if (!td) return -ENOMEM; @@ -1507,7 +1463,7 @@ static void make_ep_lists(struct udc *dev) } /* Inits UDC context */ -static void udc_basic_init(struct udc *dev) +void udc_basic_init(struct udc *dev) { u32 tmp; @@ -1543,6 +1499,7 @@ static void udc_basic_init(struct udc *dev) dev->data_ep_enabled = 0; dev->data_ep_queued = 0; } +EXPORT_SYMBOL_GPL(udc_basic_init); /* init registers at driver load time */ static int startup_registers(struct udc *dev) @@ -3031,7 +2988,7 @@ __acquires(dev->lock) } /* Interrupt Service Routine, see Linux Kernel Doc for parameters */ -static irqreturn_t udc_irq(int irq, void *pdev) +irqreturn_t udc_irq(int irq, void *pdev) { struct udc *dev = pdev; u32 reg; @@ -3083,16 +3040,18 @@ static irqreturn_t udc_irq(int irq, void *pdev) spin_unlock(&dev->lock); return ret_val; } +EXPORT_SYMBOL_GPL(udc_irq); /* Tears down device */ -static void gadget_release(struct device *pdev) +void gadget_release(struct device *pdev) { struct amd5536udc *dev = dev_get_drvdata(pdev); kfree(dev); } +EXPORT_SYMBOL_GPL(gadget_release); /* Cleanup on device remove */ -static void udc_remove(struct udc *dev) +void udc_remove(struct udc *dev) { /* remove timer */ stop_timer++; @@ -3108,9 +3067,10 @@ static void udc_remove(struct udc *dev) del_timer_sync(&udc_pollstall_timer); udc = NULL; } +EXPORT_SYMBOL_GPL(udc_remove); /* free all the dma pools */ -static void free_dma_pools(struct udc *dev) +void free_dma_pools(struct udc *dev) { dma_pool_free(dev->stp_requests, dev->ep[UDC_EP0OUT_IX].td, dev->ep[UDC_EP0OUT_IX].td_phys); @@ -3119,35 +3079,10 @@ static void free_dma_pools(struct udc *dev) dma_pool_destroy(dev->stp_requests); dma_pool_destroy(dev->data_requests); } - -/* Reset all pci context */ -static void udc_pci_remove(struct pci_dev *pdev) -{ - struct udc *dev; - - dev = pci_get_drvdata(pdev); - - usb_del_gadget_udc(&udc->gadget); - /* gadget driver must not be registered */ - if (WARN_ON(dev->driver)) - return; - - /* dma pool cleanup */ - free_dma_pools(dev); - - /* reset controller */ - writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg); - free_irq(pdev->irq, dev); - iounmap(dev->virt_addr); - release_mem_region(pci_resource_start(pdev, 0), - pci_resource_len(pdev, 0)); - pci_disable_device(pdev); - - udc_remove(dev); -} +EXPORT_SYMBOL_GPL(free_dma_pools); /* create dma pools on init */ -static int init_dma_pools(struct udc *dev) +int init_dma_pools(struct udc *dev) { struct udc_stp_dma *td_stp; struct udc_data_dma *td_data; @@ -3210,9 +3145,10 @@ err_create_dma_pool: dev->data_requests = NULL; return retval; } +EXPORT_SYMBOL_GPL(init_dma_pools); /* general probe */ -static int udc_probe(struct udc *dev) +int udc_probe(struct udc *dev) { char tmp[128]; u32 reg; @@ -3276,137 +3212,7 @@ static int udc_probe(struct udc *dev) finished: return retval; } - -/* Called by pci bus driver to init pci context */ -static int udc_pci_probe( - struct pci_dev *pdev, - const struct pci_device_id *id -) -{ - struct udc *dev; - unsigned long resource; - unsigned long len; - int retval = 0; - - /* one udc only */ - if (udc) { - dev_dbg(&pdev->dev, "already probed\n"); - return -EBUSY; - } - - /* init */ - dev = kzalloc(sizeof(struct udc), GFP_KERNEL); - if (!dev) - return -ENOMEM; - - /* pci setup */ - if (pci_enable_device(pdev) < 0) { - retval = -ENODEV; - goto err_pcidev; - } - - /* PCI resource allocation */ - resource = pci_resource_start(pdev, 0); - len = pci_resource_len(pdev, 0); - - if (!request_mem_region(resource, len, name)) { - dev_dbg(&pdev->dev, "pci device used already\n"); - retval = -EBUSY; - goto err_memreg; - } - - dev->virt_addr = ioremap_nocache(resource, len); - if (!dev->virt_addr) { - dev_dbg(&pdev->dev, "start address cannot be mapped\n"); - retval = -EFAULT; - goto err_ioremap; - } - - if (!pdev->irq) { - dev_err(&pdev->dev, "irq not set\n"); - retval = -ENODEV; - goto err_irq; - } - - spin_lock_init(&dev->lock); - /* udc csr registers base */ - dev->csr = dev->virt_addr + UDC_CSR_ADDR; - /* dev registers base */ - dev->regs = dev->virt_addr + UDC_DEVCFG_ADDR; - /* ep registers base */ - dev->ep_regs = dev->virt_addr + UDC_EPREGS_ADDR; - /* fifo's base */ - dev->rxfifo = (u32 __iomem *)(dev->virt_addr + UDC_RXFIFO_ADDR); - dev->txfifo = (u32 __iomem *)(dev->virt_addr + UDC_TXFIFO_ADDR); - - if (request_irq(pdev->irq, udc_irq, IRQF_SHARED, name, dev) != 0) { - dev_dbg(&pdev->dev, "request_irq(%d) fail\n", pdev->irq); - retval = -EBUSY; - goto err_irq; - } - - pci_set_drvdata(pdev, dev); - - /* chip revision for Hs AMD5536 */ - dev->chiprev = pdev->revision; - - pci_set_master(pdev); - pci_try_set_mwi(pdev); - - /* init dma pools */ - if (use_dma) { - retval = init_dma_pools(dev); - if (retval != 0) - goto err_dma; - } - - dev->phys_addr = resource; - dev->irq = pdev->irq; - dev->pdev = pdev; - - /* general probing */ - if (udc_probe(dev)) { - retval = -ENODEV; - goto err_probe; - } - return 0; - -err_probe: - if (use_dma) - free_dma_pools(dev); -err_dma: - free_irq(pdev->irq, dev); -err_irq: - iounmap(dev->virt_addr); -err_ioremap: - release_mem_region(resource, len); -err_memreg: - pci_disable_device(pdev); -err_pcidev: - kfree(dev); - return retval; -} - -/* PCI device parameters */ -static const struct pci_device_id pci_id[] = { - { - PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x2096), - .class = PCI_CLASS_SERIAL_USB_DEVICE, - .class_mask = 0xffffffff, - }, - {}, -}; -MODULE_DEVICE_TABLE(pci, pci_id); - -/* PCI functions */ -static struct pci_driver udc_pci_driver = { - .name = (char *) name, - .id_table = pci_id, - .probe = udc_pci_probe, - .remove = udc_pci_remove, -}; - -module_pci_driver(udc_pci_driver); +EXPORT_SYMBOL_GPL(udc_probe); MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION); MODULE_AUTHOR("Thomas Dahlmann"); diff --git a/drivers/usb/gadget/udc/amd5536udc.h b/drivers/usb/gadget/udc/amd5536udc.h index 4638d707f169..fae49bf3833e 100644 --- a/drivers/usb/gadget/udc/amd5536udc.h +++ b/drivers/usb/gadget/udc/amd5536udc.h @@ -13,6 +13,12 @@ #ifndef AMD5536UDC_H #define AMD5536UDC_H +/* debug control */ +/* #define UDC_VERBOSE */ + +#include <linux/usb/ch9.h> +#include <linux/usb/gadget.h> + /* various constants */ #define UDC_RDE_TIMER_SECONDS 1 #define UDC_RDE_TIMER_DIV 10 @@ -545,8 +551,8 @@ struct udc { u32 __iomem *txfifo; /* DMA desc pools */ - struct pci_pool *data_requests; - struct pci_pool *stp_requests; + struct dma_pool *data_requests; + struct dma_pool *stp_requests; /* device data */ unsigned long phys_addr; @@ -567,6 +573,36 @@ union udc_setup_data { struct usb_ctrlrequest request; }; +/* Function declarations */ +int udc_enable_dev_setup_interrupts(struct udc *dev); +int udc_mask_unused_interrupts(struct udc *dev); +irqreturn_t udc_irq(int irq, void *pdev); +void gadget_release(struct device *pdev); +void udc_basic_init(struct udc *dev); +void free_dma_pools(struct udc *dev); +int init_dma_pools(struct udc *dev); +void udc_remove(struct udc *dev); +int udc_probe(struct udc *dev); + +/* DMA usage flag */ +static bool use_dma = 1; +/* packet per buffer dma */ +static bool use_dma_ppb = 1; +/* with per descr. update */ +static bool use_dma_ppb_du; +/* full speed only mode */ +static bool use_fullspeed; + +/* module parameters */ +module_param(use_dma, bool, S_IRUGO); +MODULE_PARM_DESC(use_dma, "true for DMA"); +module_param(use_dma_ppb, bool, S_IRUGO); +MODULE_PARM_DESC(use_dma_ppb, "true for DMA in packet per buffer mode"); +module_param(use_dma_ppb_du, bool, S_IRUGO); +MODULE_PARM_DESC(use_dma_ppb_du, + "true for DMA in packet per buffer mode with descriptor update"); +module_param(use_fullspeed, bool, S_IRUGO); +MODULE_PARM_DESC(use_fullspeed, "true for fullspeed only"); /* *--------------------------------------------------------------------------- * SET and GET bitfields in u32 values diff --git a/drivers/usb/gadget/udc/amd5536udc_pci.c b/drivers/usb/gadget/udc/amd5536udc_pci.c new file mode 100644 index 000000000000..2a2d0a96fe24 --- /dev/null +++ b/drivers/usb/gadget/udc/amd5536udc_pci.c @@ -0,0 +1,217 @@ +/* + * amd5536udc_pci.c -- AMD 5536 UDC high/full speed USB device controller + * + * Copyright (C) 2005-2007 AMD (http://www.amd.com) + * Author: Thomas Dahlmann + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ + +/* + * The AMD5536 UDC is part of the x86 southbridge AMD Geode CS5536. + * It is a USB Highspeed DMA capable USB device controller. Beside ep0 it + * provides 4 IN and 4 OUT endpoints (bulk or interrupt type). + * + * Make sure that UDC is assigned to port 4 by BIOS settings (port can also + * be used as host port) and UOC bits PAD_EN and APU are set (should be done + * by BIOS init). + * + * UDC DMA requires 32-bit aligned buffers so DMA with gadget ether does not + * work without updating NET_IP_ALIGN. Or PIO mode (module param "use_dma=0") + * can be used with gadget ether. + * + * This file does pci device registration, and the core driver implementation + * is done in amd5536udc.c + * + * The driver is split so as to use the core UDC driver which is based on + * Synopsys device controller IP (different than HS OTG IP) in UDCs + * integrated to SoC platforms. + * + */ + +/* Driver strings */ +#define UDC_MOD_DESCRIPTION "AMD 5536 UDC - USB Device Controller" + +/* system */ +#include <linux/device.h> +#include <linux/dmapool.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/module.h> +#include <linux/moduleparam.h> +#include <linux/prefetch.h> +#include <linux/pci.h> + +/* udc specific */ +#include "amd5536udc.h" + +/* pointer to device object */ +static struct udc *udc; + +/* description */ +static const char mod_desc[] = UDC_MOD_DESCRIPTION; +static const char name[] = "amd5536udc-pci"; + +/* Reset all pci context */ +static void udc_pci_remove(struct pci_dev *pdev) +{ + struct udc *dev; + + dev = pci_get_drvdata(pdev); + + usb_del_gadget_udc(&udc->gadget); + /* gadget driver must not be registered */ + if (WARN_ON(dev->driver)) + return; + + /* dma pool cleanup */ + free_dma_pools(dev); + + /* reset controller */ + writel(AMD_BIT(UDC_DEVCFG_SOFTRESET), &dev->regs->cfg); + free_irq(pdev->irq, dev); + iounmap(dev->virt_addr); + release_mem_region(pci_resource_start(pdev, 0), + pci_resource_len(pdev, 0)); + pci_disable_device(pdev); + + udc_remove(dev); +} + +/* Called by pci bus driver to init pci context */ +static int udc_pci_probe( + struct pci_dev *pdev, + const struct pci_device_id *id +) +{ + struct udc *dev; + unsigned long resource; + unsigned long len; + int retval = 0; + + /* one udc only */ + if (udc) { + dev_dbg(&pdev->dev, "already probed\n"); + return -EBUSY; + } + + /* init */ + dev = kzalloc(sizeof(struct udc), GFP_KERNEL); + if (!dev) + return -ENOMEM; + + /* pci setup */ + if (pci_enable_device(pdev) < 0) { + retval = -ENODEV; + goto err_pcidev; + } + + /* PCI resource allocation */ + resource = pci_resource_start(pdev, 0); + len = pci_resource_len(pdev, 0); + + if (!request_mem_region(resource, len, name)) { + dev_dbg(&pdev->dev, "pci device used already\n"); + retval = -EBUSY; + goto err_memreg; + } + + dev->virt_addr = ioremap_nocache(resource, len); + if (!dev->virt_addr) { + dev_dbg(&pdev->dev, "start address cannot be mapped\n"); + retval = -EFAULT; + goto err_ioremap; + } + + if (!pdev->irq) { + dev_err(&pdev->dev, "irq not set\n"); + retval = -ENODEV; + goto err_irq; + } + + spin_lock_init(&dev->lock); + /* udc csr registers base */ + dev->csr = dev->virt_addr + UDC_CSR_ADDR; + /* dev registers base */ + dev->regs = dev->virt_addr + UDC_DEVCFG_ADDR; + /* ep registers base */ + dev->ep_regs = dev->virt_addr + UDC_EPREGS_ADDR; + /* fifo's base */ + dev->rxfifo = (u32 __iomem *)(dev->virt_addr + UDC_RXFIFO_ADDR); + dev->txfifo = (u32 __iomem *)(dev->virt_addr + UDC_TXFIFO_ADDR); + + if (request_irq(pdev->irq, udc_irq, IRQF_SHARED, name, dev) != 0) { + dev_dbg(&pdev->dev, "request_irq(%d) fail\n", pdev->irq); + retval = -EBUSY; + goto err_irq; + } + + pci_set_drvdata(pdev, dev); + + /* chip revision for Hs AMD5536 */ + dev->chiprev = pdev->revision; + + pci_set_master(pdev); + pci_try_set_mwi(pdev); + + /* init dma pools */ + if (use_dma) { + retval = init_dma_pools(dev); + if (retval != 0) + goto err_dma; + } + + dev->phys_addr = resource; + dev->irq = pdev->irq; + dev->pdev = pdev; + + /* general probing */ + if (udc_probe(dev)) { + retval = -ENODEV; + goto err_probe; + } + return 0; + +err_probe: + if (use_dma) + free_dma_pools(dev); +err_dma: + free_irq(pdev->irq, dev); +err_irq: + iounmap(dev->virt_addr); +err_ioremap: + release_mem_region(resource, len); +err_memreg: + pci_disable_device(pdev); +err_pcidev: + kfree(dev); + return retval; +} + +/* PCI device parameters */ +static const struct pci_device_id pci_id[] = { + { + PCI_DEVICE(PCI_VENDOR_ID_AMD, 0x2096), + .class = PCI_CLASS_SERIAL_USB_DEVICE, + .class_mask = 0xffffffff, + }, + {}, +}; +MODULE_DEVICE_TABLE(pci, pci_id); + +/* PCI functions */ +static struct pci_driver udc_pci_driver = { + .name = (char *) name, + .id_table = pci_id, + .probe = udc_pci_probe, + .remove = udc_pci_remove, +}; +module_pci_driver(udc_pci_driver); + +MODULE_DESCRIPTION(UDC_MOD_DESCRIPTION); +MODULE_AUTHOR("Thomas Dahlmann"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c index 2035906b8ced..3ccc34176a5a 100644 --- a/drivers/usb/gadget/udc/atmel_usba_udc.c +++ b/drivers/usb/gadget/udc/atmel_usba_udc.c @@ -321,7 +321,6 @@ static inline void usba_cleanup_debugfs(struct usba_udc *udc) static ushort fifo_mode; -/* "modprobe ... fifo_mode=1" etc */ module_param(fifo_mode, ushort, 0x0); MODULE_PARM_DESC(fifo_mode, "Endpoint configuration mode"); @@ -371,7 +370,7 @@ static struct usba_fifo_cfg mode_4_cfg[] = { }; /* Add additional configurations here */ -int usba_config_fifo_table(struct usba_udc *udc) +static int usba_config_fifo_table(struct usba_udc *udc) { int n; @@ -1076,11 +1075,9 @@ static int atmel_usba_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver); static int atmel_usba_stop(struct usb_gadget *gadget); -static struct usb_ep *atmel_usba_match_ep( - struct usb_gadget *gadget, - struct usb_endpoint_descriptor *desc, - struct usb_ss_ep_comp_descriptor *ep_comp -) +static struct usb_ep *atmel_usba_match_ep(struct usb_gadget *gadget, + struct usb_endpoint_descriptor *desc, + struct usb_ss_ep_comp_descriptor *ep_comp) { struct usb_ep *_ep; struct usba_ep *ep; @@ -1100,7 +1097,6 @@ found_ep: ep = to_usba_ep(_ep); switch (usb_endpoint_type(desc)) { - case USB_ENDPOINT_XFER_CONTROL: break; @@ -1141,7 +1137,7 @@ found_ep: ep->udc->configured_ep++; } -return _ep; + return _ep; } static const struct usb_gadget_ops usba_udc_ops = { @@ -1855,8 +1851,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) * but it's clearly harmless... */ if (!(usba_ep_readl(ep0, CFG) & USBA_EPT_MAPPED)) - dev_dbg(&udc->pdev->dev, - "ODD: EP0 configuration is invalid!\n"); + dev_err(&udc->pdev->dev, + "ODD: EP0 configuration is invalid!\n"); /* Preallocate other endpoints */ n = fifo_mode ? udc->num_ep : udc->configured_ep; @@ -1864,8 +1860,8 @@ static irqreturn_t usba_udc_irq(int irq, void *devid) ep = &udc->usba_ep[i]; usba_ep_writel(ep, CFG, ep->ept_cfg); if (!(usba_ep_readl(ep, CFG) & USBA_EPT_MAPPED)) - dev_dbg(&udc->pdev->dev, - "ODD: EP%d configuration is invalid!\n", i); + dev_err(&udc->pdev->dev, + "ODD: EP%d configuration is invalid!\n", i); } } @@ -2089,8 +2085,9 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, while ((pp = of_get_next_child(np, pp))) udc->num_ep++; udc->configured_ep = 1; - } else + } else { udc->num_ep = usba_config_fifo_table(udc); + } eps = devm_kzalloc(&pdev->dev, sizeof(struct usba_ep) * udc->num_ep, GFP_KERNEL); @@ -2118,14 +2115,34 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, dev_err(&pdev->dev, "of_probe: fifo-size error(%d)\n", ret); goto err; } - ep->fifo_size = fifo_mode ? udc->fifo_cfg[i].fifo_size : val; + if (fifo_mode) { + if (val < udc->fifo_cfg[i].fifo_size) { + dev_warn(&pdev->dev, + "Using max fifo-size value from DT\n"); + ep->fifo_size = val; + } else { + ep->fifo_size = udc->fifo_cfg[i].fifo_size; + } + } else { + ep->fifo_size = val; + } ret = of_property_read_u32(pp, "atmel,nb-banks", &val); if (ret) { dev_err(&pdev->dev, "of_probe: nb-banks error(%d)\n", ret); goto err; } - ep->nr_banks = fifo_mode ? udc->fifo_cfg[i].nr_banks : val; + if (fifo_mode) { + if (val < udc->fifo_cfg[i].nr_banks) { + dev_warn(&pdev->dev, + "Using max nb-banks value from DT\n"); + ep->nr_banks = val; + } else { + ep->nr_banks = udc->fifo_cfg[i].nr_banks; + } + } else { + ep->nr_banks = val; + } ep->can_dma = of_property_read_bool(pp, "atmel,can-dma"); ep->can_isoc = of_property_read_bool(pp, "atmel,can-isoc"); diff --git a/drivers/usb/gadget/udc/bdc/Kconfig b/drivers/usb/gadget/udc/bdc/Kconfig index 0d7b8c9f72fd..eb8b55392360 100644 --- a/drivers/usb/gadget/udc/bdc/Kconfig +++ b/drivers/usb/gadget/udc/bdc/Kconfig @@ -14,7 +14,7 @@ if USB_BDC_UDC comment "Platform Support" config USB_BDC_PCI tristate "BDC support for PCIe based platforms" - depends on PCI + depends on USB_PCI default USB_BDC_UDC help Enable support for platforms which have BDC connected through PCIe, such as Lego3 FPGA platform. diff --git a/drivers/usb/gadget/udc/core.c b/drivers/usb/gadget/udc/core.c index d685d82dcf48..efce68e9a8e0 100644 --- a/drivers/usb/gadget/udc/core.c +++ b/drivers/usb/gadget/udc/core.c @@ -1273,6 +1273,7 @@ void usb_del_gadget_udc(struct usb_gadget *gadget) flush_work(&gadget->work); device_unregister(&udc->dev); device_unregister(&gadget->dev); + memset(&gadget->dev, 0x00, sizeof(gadget->dev)); } EXPORT_SYMBOL_GPL(usb_del_gadget_udc); diff --git a/drivers/usb/gadget/udc/dummy_hcd.c b/drivers/usb/gadget/udc/dummy_hcd.c index 8cabc5944d5f..c79081952ea0 100644 --- a/drivers/usb/gadget/udc/dummy_hcd.c +++ b/drivers/usb/gadget/udc/dummy_hcd.c @@ -2062,16 +2062,13 @@ static int dummy_hub_control( } break; case USB_PORT_FEAT_POWER: - if (hcd->speed == HCD_USB3) { - if (dum_hcd->port_status & USB_PORT_STAT_POWER) - dev_dbg(dummy_dev(dum_hcd), - "power-off\n"); - } else - if (dum_hcd->port_status & - USB_SS_PORT_STAT_POWER) - dev_dbg(dummy_dev(dum_hcd), - "power-off\n"); - /* FALLS THROUGH */ + dev_dbg(dummy_dev(dum_hcd), "power-off\n"); + if (hcd->speed == HCD_USB3) + dum_hcd->port_status &= ~USB_SS_PORT_STAT_POWER; + else + dum_hcd->port_status &= ~USB_PORT_STAT_POWER; + set_link_state(dum_hcd); + break; default: dum_hcd->port_status &= ~(1 << wValue); set_link_state(dum_hcd); @@ -2242,14 +2239,13 @@ static int dummy_hub_control( if ((dum_hcd->port_status & USB_SS_PORT_STAT_POWER) != 0) { dum_hcd->port_status |= (1 << wValue); - set_link_state(dum_hcd); } } else if ((dum_hcd->port_status & USB_PORT_STAT_POWER) != 0) { dum_hcd->port_status |= (1 << wValue); - set_link_state(dum_hcd); } + set_link_state(dum_hcd); } break; case GetPortErrorCount: diff --git a/drivers/usb/gadget/udc/fsl_udc_core.c b/drivers/usb/gadget/udc/fsl_udc_core.c index b76fcdb763a0..6f2f71c054be 100644 --- a/drivers/usb/gadget/udc/fsl_udc_core.c +++ b/drivers/usb/gadget/udc/fsl_udc_core.c @@ -2676,6 +2676,8 @@ static const struct platform_device_id fsl_udc_devtype[] = { }, { .name = "imx-udc-mx51", }, { + .name = "fsl-usb2-udc", + }, { /* sentinel */ } }; diff --git a/drivers/usb/gadget/udc/mv_u3d_core.c b/drivers/usb/gadget/udc/mv_u3d_core.c index d365449a295a..772049afe166 100644 --- a/drivers/usb/gadget/udc/mv_u3d_core.c +++ b/drivers/usb/gadget/udc/mv_u3d_core.c @@ -1835,13 +1835,18 @@ static int mv_u3d_probe(struct platform_device *dev) } /* we will access controller register, so enable the u3d controller */ - clk_enable(u3d->clk); + retval = clk_enable(u3d->clk); + if (retval) { + dev_err(&dev->dev, "clk_enable error %d\n", retval); + goto err_u3d_enable; + } if (pdata->phy_init) { retval = pdata->phy_init(u3d->phy_regs); if (retval) { dev_err(&dev->dev, "init phy error %d\n", retval); - goto err_u3d_enable; + clk_disable(u3d->clk); + goto err_phy_init; } } @@ -1974,15 +1979,13 @@ err_alloc_trb_pool: dma_free_coherent(&dev->dev, u3d->ep_context_size, u3d->ep_context, u3d->ep_context_dma); err_alloc_ep_context: - if (pdata->phy_deinit) - pdata->phy_deinit(u3d->phy_regs); - clk_disable(u3d->clk); +err_phy_init: err_u3d_enable: iounmap(u3d->cap_regs); err_map_cap_regs: err_get_cap_regs: -err_get_clk: clk_put(u3d->clk); +err_get_clk: kfree(u3d); err_alloc_private: err_pdata: diff --git a/drivers/usb/gadget/udc/mv_udc_core.c b/drivers/usb/gadget/udc/mv_udc_core.c index 27ebb0d5449d..76f56c5762f9 100644 --- a/drivers/usb/gadget/udc/mv_udc_core.c +++ b/drivers/usb/gadget/udc/mv_udc_core.c @@ -445,7 +445,8 @@ static int mv_ep_enable(struct usb_ep *_ep, struct mv_dqh *dqh; u16 max = 0; u32 bit_pos, epctrlx, direction; - unsigned char zlt = 0, ios = 0, mult = 0; + const unsigned char zlt = 1; + unsigned char ios, mult; unsigned long flags; ep = container_of(_ep, struct mv_ep, ep); @@ -465,8 +466,6 @@ static int mv_ep_enable(struct usb_ep *_ep, * disable HW zero length termination select * driver handles zero length packet through req->req.zero */ - zlt = 1; - bit_pos = 1 << ((direction == EP_DIR_OUT ? 0 : 16) + ep->ep_num); /* Check if the Endpoint is Primed */ @@ -481,16 +480,16 @@ static int mv_ep_enable(struct usb_ep *_ep, (unsigned)bit_pos); goto en_done; } + /* Set the max packet length, interrupt on Setup and Mult fields */ + ios = 0; + mult = 0; switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { case USB_ENDPOINT_XFER_BULK: - zlt = 1; - mult = 0; + case USB_ENDPOINT_XFER_INT: break; case USB_ENDPOINT_XFER_CONTROL: ios = 1; - case USB_ENDPOINT_XFER_INT: - mult = 0; break; case USB_ENDPOINT_XFER_ISOC: /* Calculate transactions needed for high bandwidth iso */ diff --git a/drivers/usb/gadget/udc/net2272.c b/drivers/usb/gadget/udc/net2272.c index 7dc0102abdfe..8f85a51bd2b3 100644 --- a/drivers/usb/gadget/udc/net2272.c +++ b/drivers/usb/gadget/udc/net2272.c @@ -653,7 +653,7 @@ net2272_request_dma(struct net2272 *dev, unsigned ep, u32 buf, dev->dma_busy = 1; /* initialize platform's dma */ -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI /* NET2272 addr, buffer addr, length, etc. */ switch (dev->dev_id) { case PCI_DEVICE_ID_RDK1: @@ -701,7 +701,7 @@ static void net2272_start_dma(struct net2272 *dev) { /* start platform's dma controller */ -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI switch (dev->dev_id) { case PCI_DEVICE_ID_RDK1: writeb((1 << CHANNEL_ENABLE) | (1 << CHANNEL_START), @@ -797,7 +797,7 @@ net2272_kick_dma(struct net2272_ep *ep, struct net2272_request *req) static void net2272_cancel_dma(struct net2272 *dev) { -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI switch (dev->dev_id) { case PCI_DEVICE_ID_RDK1: writeb(0, dev->rdk1.plx9054_base_addr + DMACSR0); @@ -2306,7 +2306,7 @@ err_add_udc: return ret; } -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI /* * wrap this driver around the specified device, but diff --git a/drivers/usb/gadget/udc/net2272.h b/drivers/usb/gadget/udc/net2272.h index 127ab03fcde3..69bc9c3c6ce4 100644 --- a/drivers/usb/gadget/udc/net2272.h +++ b/drivers/usb/gadget/udc/net2272.h @@ -472,7 +472,7 @@ struct net2272 { unsigned int base_shift; u16 __iomem *base_addr; union { -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI struct { void __iomem *plx9054_base_addr; void __iomem *epld_base_addr; diff --git a/drivers/usb/gadget/udc/net2280.c b/drivers/usb/gadget/udc/net2280.c index 3828c2ec8623..6cf07857eaca 100644 --- a/drivers/usb/gadget/udc/net2280.c +++ b/drivers/usb/gadget/udc/net2280.c @@ -569,7 +569,7 @@ static struct usb_request if (ep->dma) { struct net2280_dma *td; - td = pci_pool_alloc(ep->dev->requests, gfp_flags, + td = dma_pool_alloc(ep->dev->requests, gfp_flags, &req->td_dma); if (!td) { kfree(req); @@ -597,7 +597,7 @@ static void net2280_free_request(struct usb_ep *_ep, struct usb_request *_req) req = container_of(_req, struct net2280_request, req); WARN_ON(!list_empty(&req->queue)); if (req->td) - pci_pool_free(ep->dev->requests, req->td, req->td_dma); + dma_pool_free(ep->dev->requests, req->td, req->td_dma); kfree(req); } @@ -3579,10 +3579,10 @@ static void net2280_remove(struct pci_dev *pdev) for (i = 1; i < 5; i++) { if (!dev->ep[i].dummy) continue; - pci_pool_free(dev->requests, dev->ep[i].dummy, + dma_pool_free(dev->requests, dev->ep[i].dummy, dev->ep[i].td_dma); } - pci_pool_destroy(dev->requests); + dma_pool_destroy(dev->requests); } if (dev->got_irq) free_irq(pdev->irq, dev); @@ -3724,7 +3724,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) /* DMA setup */ /* NOTE: we know only the 32 LSBs of dma addresses may be nonzero */ - dev->requests = pci_pool_create("requests", pdev, + dev->requests = dma_pool_create("requests", &pdev->dev, sizeof(struct net2280_dma), 0 /* no alignment requirements */, 0 /* or page-crossing issues */); @@ -3736,7 +3736,7 @@ static int net2280_probe(struct pci_dev *pdev, const struct pci_device_id *id) for (i = 1; i < 5; i++) { struct net2280_dma *td; - td = pci_pool_alloc(dev->requests, GFP_KERNEL, + td = dma_pool_alloc(dev->requests, GFP_KERNEL, &dev->ep[i].td_dma); if (!td) { ep_dbg(dev, "can't get dummy %d\n", i); diff --git a/drivers/usb/gadget/udc/net2280.h b/drivers/usb/gadget/udc/net2280.h index 2736a95751c3..1088c3745999 100644 --- a/drivers/usb/gadget/udc/net2280.h +++ b/drivers/usb/gadget/udc/net2280.h @@ -187,7 +187,7 @@ struct net2280 { struct usb338x_ll_chi_regs __iomem *ll_chicken_reg; struct usb338x_pl_regs __iomem *plregs; - struct pci_pool *requests; + struct dma_pool *requests; /* statistics...*/ }; diff --git a/drivers/usb/gadget/udc/pch_udc.c b/drivers/usb/gadget/udc/pch_udc.c index 8a365aad66fe..84dcbcd756f0 100644 --- a/drivers/usb/gadget/udc/pch_udc.c +++ b/drivers/usb/gadget/udc/pch_udc.c @@ -355,8 +355,8 @@ struct pch_udc_dev { vbus_session:1, set_cfg_not_acked:1, waiting_zlp_ack:1; - struct pci_pool *data_requests; - struct pci_pool *stp_requests; + struct dma_pool *data_requests; + struct dma_pool *stp_requests; dma_addr_t dma_addr; struct usb_ctrlrequest setup_data; void __iomem *base_addr; @@ -1522,7 +1522,8 @@ static void pch_udc_free_dma_chain(struct pch_udc_dev *dev, /* do not free first desc., will be done by free for request */ td = phys_to_virt(addr); addr2 = (dma_addr_t)td->next; - pci_pool_free(dev->data_requests, td, addr); + dma_pool_free(dev->data_requests, td, addr); + td->next = 0x00; addr = addr2; } req->chain_len = 1; @@ -1538,7 +1539,7 @@ static void pch_udc_free_dma_chain(struct pch_udc_dev *dev, * * Return codes: * 0: success, - * -ENOMEM: pci_pool_alloc invocation fails + * -ENOMEM: dma_pool_alloc invocation fails */ static int pch_udc_create_dma_chain(struct pch_udc_ep *ep, struct pch_udc_request *req, @@ -1564,7 +1565,7 @@ static int pch_udc_create_dma_chain(struct pch_udc_ep *ep, if (bytes <= buf_len) break; last = td; - td = pci_pool_alloc(ep->dev->data_requests, gfp_flags, + td = dma_pool_alloc(ep->dev->data_requests, gfp_flags, &dma_addr); if (!td) goto nomem; @@ -1769,7 +1770,7 @@ static struct usb_request *pch_udc_alloc_request(struct usb_ep *usbep, if (!ep->dev->dma_addr) return &req->req; /* ep0 in requests are allocated from data pool here */ - dma_desc = pci_pool_alloc(ep->dev->data_requests, gfp, + dma_desc = dma_pool_alloc(ep->dev->data_requests, gfp, &req->td_data_phys); if (NULL == dma_desc) { kfree(req); @@ -1808,7 +1809,7 @@ static void pch_udc_free_request(struct usb_ep *usbep, if (req->td_data != NULL) { if (req->chain_len > 1) pch_udc_free_dma_chain(ep->dev, req); - pci_pool_free(ep->dev->data_requests, req->td_data, + dma_pool_free(ep->dev->data_requests, req->td_data, req->td_data_phys); } kfree(req); @@ -2913,7 +2914,7 @@ static int init_dma_pools(struct pch_udc_dev *dev) void *ep0out_buf; /* DMA setup */ - dev->data_requests = pci_pool_create("data_requests", dev->pdev, + dev->data_requests = dma_pool_create("data_requests", &dev->pdev->dev, sizeof(struct pch_udc_data_dma_desc), 0, 0); if (!dev->data_requests) { dev_err(&dev->pdev->dev, "%s: can't get request data pool\n", @@ -2922,7 +2923,7 @@ static int init_dma_pools(struct pch_udc_dev *dev) } /* dma desc for setup data */ - dev->stp_requests = pci_pool_create("setup requests", dev->pdev, + dev->stp_requests = dma_pool_create("setup requests", &dev->pdev->dev, sizeof(struct pch_udc_stp_dma_desc), 0, 0); if (!dev->stp_requests) { dev_err(&dev->pdev->dev, "%s: can't get setup request pool\n", @@ -2930,7 +2931,7 @@ static int init_dma_pools(struct pch_udc_dev *dev) return -ENOMEM; } /* setup */ - td_stp = pci_pool_alloc(dev->stp_requests, GFP_KERNEL, + td_stp = dma_pool_alloc(dev->stp_requests, GFP_KERNEL, &dev->ep[UDC_EP0OUT_IDX].td_stp_phys); if (!td_stp) { dev_err(&dev->pdev->dev, @@ -2940,7 +2941,7 @@ static int init_dma_pools(struct pch_udc_dev *dev) dev->ep[UDC_EP0OUT_IDX].td_stp = td_stp; /* data: 0 packets !? */ - td_data = pci_pool_alloc(dev->data_requests, GFP_KERNEL, + td_data = dma_pool_alloc(dev->data_requests, GFP_KERNEL, &dev->ep[UDC_EP0OUT_IDX].td_data_phys); if (!td_data) { dev_err(&dev->pdev->dev, @@ -3020,22 +3021,21 @@ static void pch_udc_remove(struct pci_dev *pdev) dev_err(&pdev->dev, "%s: gadget driver still bound!!!\n", __func__); /* dma pool cleanup */ - if (dev->data_requests) - pci_pool_destroy(dev->data_requests); + dma_pool_destroy(dev->data_requests); if (dev->stp_requests) { /* cleanup DMA desc's for ep0in */ if (dev->ep[UDC_EP0OUT_IDX].td_stp) { - pci_pool_free(dev->stp_requests, + dma_pool_free(dev->stp_requests, dev->ep[UDC_EP0OUT_IDX].td_stp, dev->ep[UDC_EP0OUT_IDX].td_stp_phys); } if (dev->ep[UDC_EP0OUT_IDX].td_data) { - pci_pool_free(dev->stp_requests, + dma_pool_free(dev->stp_requests, dev->ep[UDC_EP0OUT_IDX].td_data, dev->ep[UDC_EP0OUT_IDX].td_data_phys); } - pci_pool_destroy(dev->stp_requests); + dma_pool_destroy(dev->stp_requests); } if (dev->dma_addr) diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c index 832c4fdbe985..d48e239660c3 100644 --- a/drivers/usb/gadget/udc/pxa27x_udc.c +++ b/drivers/usb/gadget/udc/pxa27x_udc.c @@ -1608,9 +1608,6 @@ static int pxa_udc_pullup(struct usb_gadget *_gadget, int is_active) return 0; } -static void udc_enable(struct pxa_udc *udc); -static void udc_disable(struct pxa_udc *udc); - /** * pxa_udc_vbus_session - Called by external transceiver to enable/disable udc * @_gadget: usb gadget diff --git a/drivers/usb/gadget/udc/renesas_usb3.c b/drivers/usb/gadget/udc/renesas_usb3.c index 2218f91e92a6..5a2d845fb1a6 100644 --- a/drivers/usb/gadget/udc/renesas_usb3.c +++ b/drivers/usb/gadget/udc/renesas_usb3.c @@ -10,6 +10,7 @@ #include <linux/delay.h> #include <linux/err.h> +#include <linux/extcon.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/module.h> @@ -37,6 +38,9 @@ #define USB3_USB_INT_ENA_2 0x22c #define USB3_STUP_DAT_0 0x230 #define USB3_STUP_DAT_1 0x234 +#define USB3_USB_OTG_STA 0x268 +#define USB3_USB_OTG_INT_STA 0x26c +#define USB3_USB_OTG_INT_ENA 0x270 #define USB3_P0_MOD 0x280 #define USB3_P0_CON 0x288 #define USB3_P0_STA 0x28c @@ -124,6 +128,9 @@ /* USB_INT_ENA_2 and USB_INT_STA_2 */ #define USB_INT_2_PIPE(n) BIT(n) +/* USB_OTG_STA, USB_OTG_INT_STA and USB_OTG_INT_ENA */ +#define USB_OTG_IDMON BIT(4) + /* P0_MOD */ #define P0_MOD_DIR BIT(6) @@ -257,6 +264,8 @@ struct renesas_usb3 { struct usb_gadget gadget; struct usb_gadget_driver *driver; + struct extcon_dev *extcon; + struct work_struct extcon_work; struct renesas_usb3_ep *usb3_ep; int num_usb3_eps; @@ -269,6 +278,8 @@ struct renesas_usb3 { u8 ep0_buf[USB3_EP0_BUF_SIZE]; bool softconnect; bool workaround_for_vbus; + bool extcon_host; /* check id and set EXTCON_USB_HOST */ + bool extcon_usb; /* check vbus and set EXTCON_USB */ }; #define gadget_to_renesas_usb3(_gadget) \ @@ -332,6 +343,15 @@ static int usb3_wait(struct renesas_usb3 *usb3, u32 reg, u32 mask, return -EBUSY; } +static void renesas_usb3_extcon_work(struct work_struct *work) +{ + struct renesas_usb3 *usb3 = container_of(work, struct renesas_usb3, + extcon_work); + + extcon_set_state_sync(usb3->extcon, EXTCON_USB_HOST, usb3->extcon_host); + extcon_set_state_sync(usb3->extcon, EXTCON_USB, usb3->extcon_usb); +} + static void usb3_enable_irq_1(struct renesas_usb3 *usb3, u32 bits) { usb3_set_bit(usb3, bits, USB3_USB_INT_ENA_1); @@ -352,6 +372,11 @@ static void usb3_disable_pipe_irq(struct renesas_usb3 *usb3, int num) usb3_clear_bit(usb3, USB_INT_2_PIPE(num), USB3_USB_INT_ENA_2); } +static bool usb3_is_host(struct renesas_usb3 *usb3) +{ + return !(usb3_read(usb3, USB3_DRD_CON) & DRD_CON_PERI_CON); +} + static void usb3_init_axi_bridge(struct renesas_usb3 *usb3) { /* Set AXI_INT */ @@ -362,10 +387,6 @@ static void usb3_init_axi_bridge(struct renesas_usb3 *usb3) static void usb3_init_epc_registers(struct renesas_usb3 *usb3) { - /* FIXME: How to change host / peripheral mode as well? */ - usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); - usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); - usb3_write(usb3, ~0, USB3_USB_INT_STA_1); usb3_enable_irq_1(usb3, USB_INT_1_VBUS_CNG); } @@ -531,18 +552,70 @@ static void usb3_check_vbus(struct renesas_usb3 *usb3) if (usb3->workaround_for_vbus) { usb3_connect(usb3); } else { - if (usb3_read(usb3, USB3_USB_STA) & USB_STA_VBUS_STA) + usb3->extcon_usb = !!(usb3_read(usb3, USB3_USB_STA) & + USB_STA_VBUS_STA); + if (usb3->extcon_usb) usb3_connect(usb3); else usb3_disconnect(usb3); + + schedule_work(&usb3->extcon_work); } } +static void usb3_set_mode(struct renesas_usb3 *usb3, bool host) +{ + if (host) + usb3_clear_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); + else + usb3_set_bit(usb3, DRD_CON_PERI_CON, USB3_DRD_CON); +} + +static void usb3_vbus_out(struct renesas_usb3 *usb3, bool enable) +{ + if (enable) + usb3_set_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); + else + usb3_clear_bit(usb3, DRD_CON_VBOUT, USB3_DRD_CON); +} + +static void usb3_mode_config(struct renesas_usb3 *usb3, bool host, bool a_dev) +{ + unsigned long flags; + + spin_lock_irqsave(&usb3->lock, flags); + usb3_set_mode(usb3, host); + usb3_vbus_out(usb3, a_dev); + if (!host && a_dev) /* for A-Peripheral */ + usb3_connect(usb3); + spin_unlock_irqrestore(&usb3->lock, flags); +} + +static bool usb3_is_a_device(struct renesas_usb3 *usb3) +{ + return !(usb3_read(usb3, USB3_USB_OTG_STA) & USB_OTG_IDMON); +} + +static void usb3_check_id(struct renesas_usb3 *usb3) +{ + usb3->extcon_host = usb3_is_a_device(usb3); + + if (usb3->extcon_host) + usb3_mode_config(usb3, true, true); + else + usb3_mode_config(usb3, false, false); + + schedule_work(&usb3->extcon_work); +} + static void renesas_usb3_init_controller(struct renesas_usb3 *usb3) { usb3_init_axi_bridge(usb3); usb3_init_epc_registers(usb3); + usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_STA); + usb3_write(usb3, USB_OTG_IDMON, USB3_USB_OTG_INT_ENA); + usb3_check_id(usb3); usb3_check_vbus(usb3); } @@ -551,6 +624,7 @@ static void renesas_usb3_stop_controller(struct renesas_usb3 *usb3) usb3_disconnect(usb3); usb3_write(usb3, 0, USB3_P0_INT_ENA); usb3_write(usb3, 0, USB3_PN_INT_ENA); + usb3_write(usb3, 0, USB3_USB_OTG_INT_ENA); usb3_write(usb3, 0, USB3_USB_INT_ENA_1); usb3_write(usb3, 0, USB3_USB_INT_ENA_2); usb3_write(usb3, 0, USB3_AXI_INT_ENA); @@ -1474,10 +1548,22 @@ static void usb3_irq_epc_int_2(struct renesas_usb3 *usb3, u32 int_sta_2) } } +static void usb3_irq_idmon_change(struct renesas_usb3 *usb3) +{ + usb3_check_id(usb3); +} + +static void usb3_irq_otg_int(struct renesas_usb3 *usb3, u32 otg_int_sta) +{ + if (otg_int_sta & USB_OTG_IDMON) + usb3_irq_idmon_change(usb3); +} + static void usb3_irq_epc(struct renesas_usb3 *usb3) { u32 int_sta_1 = usb3_read(usb3, USB3_USB_INT_STA_1); u32 int_sta_2 = usb3_read(usb3, USB3_USB_INT_STA_2); + u32 otg_int_sta = usb3_read(usb3, USB3_USB_OTG_INT_STA); int_sta_1 &= usb3_read(usb3, USB3_USB_INT_ENA_1); if (int_sta_1) { @@ -1488,6 +1574,12 @@ static void usb3_irq_epc(struct renesas_usb3 *usb3) int_sta_2 &= usb3_read(usb3, USB3_USB_INT_ENA_2); if (int_sta_2) usb3_irq_epc_int_2(usb3, int_sta_2); + + otg_int_sta &= usb3_read(usb3, USB3_USB_OTG_INT_ENA); + if (otg_int_sta) { + usb3_write(usb3, otg_int_sta, USB3_USB_OTG_INT_STA); + usb3_irq_otg_int(usb3, otg_int_sta); + } } static irqreturn_t renesas_usb3_irq(int irq, void *_usb3) @@ -1756,11 +1848,49 @@ static const struct usb_gadget_ops renesas_usb3_gadget_ops = { .set_selfpowered = renesas_usb3_set_selfpowered, }; +static ssize_t role_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + struct renesas_usb3 *usb3 = dev_get_drvdata(dev); + bool new_mode_is_host; + + if (!usb3->driver) + return -ENODEV; + + if (!strncmp(buf, "host", strlen("host"))) + new_mode_is_host = true; + else if (!strncmp(buf, "peripheral", strlen("peripheral"))) + new_mode_is_host = false; + else + return -EINVAL; + + if (new_mode_is_host == usb3_is_host(usb3)) + return -EINVAL; + + usb3_mode_config(usb3, new_mode_is_host, usb3_is_a_device(usb3)); + + return count; +} + +static ssize_t role_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct renesas_usb3 *usb3 = dev_get_drvdata(dev); + + if (!usb3->driver) + return -ENODEV; + + return sprintf(buf, "%s\n", usb3_is_host(usb3) ? "host" : "peripheral"); +} +static DEVICE_ATTR_RW(role); + /*------- platform_driver ------------------------------------------------*/ static int renesas_usb3_remove(struct platform_device *pdev) { struct renesas_usb3 *usb3 = platform_get_drvdata(pdev); + device_remove_file(&pdev->dev, &dev_attr_role); + pm_runtime_put(&pdev->dev); pm_runtime_disable(&pdev->dev); @@ -1894,6 +2024,12 @@ static const struct of_device_id usb3_of_match[] = { }; MODULE_DEVICE_TABLE(of, usb3_of_match); +static const unsigned int renesas_usb3_cable[] = { + EXTCON_USB, + EXTCON_USB_HOST, + EXTCON_NONE, +}; + static int renesas_usb3_probe(struct platform_device *pdev) { struct renesas_usb3 *usb3; @@ -1937,6 +2073,17 @@ static int renesas_usb3_probe(struct platform_device *pdev) if (ret < 0) return ret; + INIT_WORK(&usb3->extcon_work, renesas_usb3_extcon_work); + usb3->extcon = devm_extcon_dev_allocate(&pdev->dev, renesas_usb3_cable); + if (IS_ERR(usb3->extcon)) + return PTR_ERR(usb3->extcon); + + ret = devm_extcon_dev_register(&pdev->dev, usb3->extcon); + if (ret < 0) { + dev_err(&pdev->dev, "Failed to register extcon\n"); + return ret; + } + /* for ep0 handling */ usb3->ep0_req = __renesas_usb3_ep_alloc_request(GFP_KERNEL); if (!usb3->ep0_req) @@ -1946,6 +2093,10 @@ static int renesas_usb3_probe(struct platform_device *pdev) if (ret < 0) goto err_add_udc; + ret = device_create_file(&pdev->dev, &dev_attr_role); + if (ret < 0) + goto err_dev_create; + usb3->workaround_for_vbus = priv->workaround_for_vbus; pm_runtime_enable(&pdev->dev); @@ -1955,6 +2106,9 @@ static int renesas_usb3_probe(struct platform_device *pdev) return 0; +err_dev_create: + usb_del_gadget_udc(&usb3->gadget); + err_add_udc: __renesas_usb3_ep_free_request(usb3->ep0_req); diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 407d947b34ea..ababb91d654a 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -30,7 +30,7 @@ if USB_XHCI_HCD config USB_XHCI_PCI tristate - depends on PCI + depends on USB_PCI default y config USB_XHCI_PLATFORM @@ -139,7 +139,7 @@ if USB_EHCI_HCD config USB_EHCI_PCI tristate - depends on PCI + depends on USB_PCI default y config USB_EHCI_HCD_PMC_MSP @@ -188,7 +188,7 @@ config USB_EHCI_HCD_OMAP config USB_EHCI_HCD_ORION tristate "Support for Marvell EBU on-chip EHCI USB controller" - depends on USB_EHCI_HCD && PLAT_ORION + depends on USB_EHCI_HCD && (PLAT_ORION || ARCH_MVEBU) default y ---help--- Enables support for the on-chip EHCI controller on Marvell's @@ -525,7 +525,7 @@ config USB_OHCI_HCD_PPC_OF config USB_OHCI_HCD_PCI tristate "OHCI support for PCI-bus USB controllers" - depends on PCI + depends on USB_PCI default y select USB_OHCI_LITTLE_ENDIAN ---help--- @@ -606,7 +606,7 @@ endif # USB_OHCI_HCD config USB_UHCI_HCD tristate "UHCI HCD (most Intel and VIA) support" - depends on PCI || USB_UHCI_SUPPORT_NON_PCI_HC + depends on USB_PCI || USB_UHCI_SUPPORT_NON_PCI_HC ---help--- The Universal Host Controller Interface is a standard by Intel for accessing the USB hardware in the PC (which is also called the USB @@ -739,7 +739,7 @@ config USB_RENESAS_USBHS_HCD config USB_WHCI_HCD tristate "Wireless USB Host Controller Interface (WHCI) driver" - depends on PCI && USB && UWB + depends on USB_PCI && USB && UWB select USB_WUSB select UWB_WHCI help diff --git a/drivers/usb/host/Makefile b/drivers/usb/host/Makefile index 2644537b7bcf..c77b0a38557b 100644 --- a/drivers/usb/host/Makefile +++ b/drivers/usb/host/Makefile @@ -27,9 +27,7 @@ endif obj-$(CONFIG_USB_WHCI_HCD) += whci/ -ifneq ($(CONFIG_USB), ) - obj-$(CONFIG_PCI) += pci-quirks.o -endif +obj-$(CONFIG_USB_PCI) += pci-quirks.o obj-$(CONFIG_USB_EHCI_HCD) += ehci-hcd.o obj-$(CONFIG_USB_EHCI_PCI) += ehci-pci.o diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 1a2614aae42c..cbb9b8e12c3c 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -803,7 +803,7 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf) size -= temp; next += temp; -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI /* EHCI 0.96 and later may have "extended capabilities" */ if (dev_is_pci(hcd->self.controller)) { struct pci_dev *pdev; diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c index 3733aab46efe..4a08b70c81aa 100644 --- a/drivers/usb/host/ehci-fsl.c +++ b/drivers/usb/host/ehci-fsl.c @@ -96,8 +96,8 @@ static int fsl_ehci_drv_probe(struct platform_device *pdev) } irq = res->start; - hcd = usb_create_hcd(&fsl_ehci_hc_driver, &pdev->dev, - dev_name(&pdev->dev)); + hcd = __usb_create_hcd(&fsl_ehci_hc_driver, pdev->dev.parent, + &pdev->dev, dev_name(&pdev->dev), NULL); if (!hcd) { retval = -ENOMEM; goto err1; diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index ac2c4eab478d..6e834b83a104 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -597,7 +597,7 @@ static int ehci_run (struct usb_hcd *hcd) /* * hcc_params controls whether ehci->regs->segment must (!!!) * be used; it constrains QH/ITD/SITD and QTD locations. - * pci_pool consistent memory always uses segment zero. + * dma_pool consistent memory always uses segment zero. * streaming mappings for I/O buffers, like pci_map_single(), * can return segments above 4GB, if the device allows. * diff --git a/drivers/usb/host/ehci-mem.c b/drivers/usb/host/ehci-mem.c index 4de43011df23..9b7e63977215 100644 --- a/drivers/usb/host/ehci-mem.c +++ b/drivers/usb/host/ehci-mem.c @@ -138,7 +138,7 @@ static void ehci_mem_cleanup (struct ehci_hcd *ehci) ehci->sitd_pool = NULL; if (ehci->periodic) - dma_free_coherent (ehci_to_hcd(ehci)->self.controller, + dma_free_coherent(ehci_to_hcd(ehci)->self.sysdev, ehci->periodic_size * sizeof (u32), ehci->periodic, ehci->periodic_dma); ehci->periodic = NULL; @@ -155,7 +155,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) /* QTDs for control/bulk/intr transfers */ ehci->qtd_pool = dma_pool_create ("ehci_qtd", - ehci_to_hcd(ehci)->self.controller, + ehci_to_hcd(ehci)->self.sysdev, sizeof (struct ehci_qtd), 32 /* byte alignment (for hw parts) */, 4096 /* can't cross 4K */); @@ -165,7 +165,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) /* QHs for control/bulk/intr transfers */ ehci->qh_pool = dma_pool_create ("ehci_qh", - ehci_to_hcd(ehci)->self.controller, + ehci_to_hcd(ehci)->self.sysdev, sizeof(struct ehci_qh_hw), 32 /* byte alignment (for hw parts) */, 4096 /* can't cross 4K */); @@ -179,7 +179,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) /* ITD for high speed ISO transfers */ ehci->itd_pool = dma_pool_create ("ehci_itd", - ehci_to_hcd(ehci)->self.controller, + ehci_to_hcd(ehci)->self.sysdev, sizeof (struct ehci_itd), 32 /* byte alignment (for hw parts) */, 4096 /* can't cross 4K */); @@ -189,7 +189,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) /* SITD for full/low speed split ISO transfers */ ehci->sitd_pool = dma_pool_create ("ehci_sitd", - ehci_to_hcd(ehci)->self.controller, + ehci_to_hcd(ehci)->self.sysdev, sizeof (struct ehci_sitd), 32 /* byte alignment (for hw parts) */, 4096 /* can't cross 4K */); @@ -199,7 +199,7 @@ static int ehci_mem_init (struct ehci_hcd *ehci, gfp_t flags) /* Hardware periodic table */ ehci->periodic = (__le32 *) - dma_alloc_coherent (ehci_to_hcd(ehci)->self.controller, + dma_alloc_coherent(ehci_to_hcd(ehci)->self.sysdev, ehci->periodic_size * sizeof(__le32), &ehci->periodic_dma, flags); if (ehci->periodic == NULL) { diff --git a/drivers/usb/host/ehci-orion.c b/drivers/usb/host/ehci-orion.c index ee8d5faa0194..1aec87ec68df 100644 --- a/drivers/usb/host/ehci-orion.c +++ b/drivers/usb/host/ehci-orion.c @@ -47,6 +47,18 @@ #define USB_PHY_IVREF_CTRL 0x440 #define USB_PHY_TST_GRP_CTRL 0x450 +#define USB_SBUSCFG 0x90 + +/* BAWR = BARD = 3 : Align read/write bursts packets larger than 128 bytes */ +#define USB_SBUSCFG_BAWR_ALIGN_128B (0x3 << 6) +#define USB_SBUSCFG_BARD_ALIGN_128B (0x3 << 3) +/* AHBBRST = 3 : Align AHB Burst to INCR16 (64 bytes) */ +#define USB_SBUSCFG_AHBBRST_INCR16 (0x3 << 0) + +#define USB_SBUSCFG_DEF_VAL (USB_SBUSCFG_BAWR_ALIGN_128B \ + | USB_SBUSCFG_BARD_ALIGN_128B \ + | USB_SBUSCFG_AHBBRST_INCR16) + #define DRIVER_DESC "EHCI orion driver" #define hcd_to_orion_priv(h) ((struct orion_ehci_hcd *)hcd_to_ehci(h)->priv) @@ -151,8 +163,31 @@ ehci_orion_conf_mbus_windows(struct usb_hcd *hcd, } } +static int ehci_orion_drv_reset(struct usb_hcd *hcd) +{ + struct device *dev = hcd->self.controller; + int ret; + + ret = ehci_setup(hcd); + if (ret) + return ret; + + /* + * For SoC without hlock, need to program sbuscfg value to guarantee + * AHB master's burst would not overrun or underrun FIFO. + * + * sbuscfg reg has to be set after usb controller reset, otherwise + * the value would be override to 0. + */ + if (of_device_is_compatible(dev->of_node, "marvell,armada-3700-ehci")) + wrl(USB_SBUSCFG, USB_SBUSCFG_DEF_VAL); + + return ret; +} + static const struct ehci_driver_overrides orion_overrides __initconst = { .extra_priv_size = sizeof(struct orion_ehci_hcd), + .reset = ehci_orion_drv_reset, }; static int ehci_orion_drv_probe(struct platform_device *pdev) @@ -310,6 +345,7 @@ static int ehci_orion_drv_remove(struct platform_device *pdev) static const struct of_device_id ehci_orion_dt_ids[] = { { .compatible = "marvell,orion-ehci", }, + { .compatible = "marvell,armada-3700-ehci", }, {}, }; MODULE_DEVICE_TABLE(of, ehci_orion_dt_ids); diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c index a268d9e8d6cf..bc7b9be12f54 100644 --- a/drivers/usb/host/ehci-platform.c +++ b/drivers/usb/host/ehci-platform.c @@ -34,6 +34,7 @@ #include <linux/usb.h> #include <linux/usb/hcd.h> #include <linux/usb/ehci_pdriver.h> +#include <linux/usb/of.h> #include "ehci.h" @@ -220,6 +221,9 @@ static int ehci_platform_probe(struct platform_device *dev) if (IS_ERR(priv->phys[phy_num])) { err = PTR_ERR(priv->phys[phy_num]); goto err_put_hcd; + } else if (!hcd->phy) { + /* Avoiding phy_get() in usb_add_hcd() */ + hcd->phy = priv->phys[phy_num]; } } @@ -297,6 +301,7 @@ static int ehci_platform_probe(struct platform_device *dev) goto err_power; device_wakeup_enable(hcd->self.controller); + device_enable_async_suspend(hcd->self.controller); platform_set_drvdata(dev, hcd); return err; @@ -370,6 +375,7 @@ static int ehci_platform_resume(struct device *dev) struct usb_ehci_pdata *pdata = dev_get_platdata(dev); struct platform_device *pdev = to_platform_device(dev); struct ehci_platform_priv *priv = hcd_to_ehci_priv(hcd); + struct device *companion_dev; if (pdata->power_on) { int err = pdata->power_on(pdev); @@ -377,6 +383,10 @@ static int ehci_platform_resume(struct device *dev) return err; } + companion_dev = usb_of_get_companion_dev(hcd->self.controller); + if (companion_dev) + device_pm_wait_for_dev(hcd->self.controller, companion_dev); + ehci_resume(hcd, priv->reset_on_resume); return 0; } diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c index 1c5b34b74860..ced08dc229ad 100644 --- a/drivers/usb/host/fotg210-hcd.c +++ b/drivers/usb/host/fotg210-hcd.c @@ -5047,7 +5047,7 @@ static int fotg210_run(struct usb_hcd *hcd) /* * hcc_params controls whether fotg210->regs->segment must (!!!) * be used; it constrains QH/ITD/SITD and QTD locations. - * pci_pool consistent memory always uses segment zero. + * dma_pool consistent memory always uses segment zero. * streaming mappings for I/O buffers, like pci_map_single(), * can return segments above 4GB, if the device allows. * diff --git a/drivers/usb/host/ohci-hcd.c b/drivers/usb/host/ohci-hcd.c index b6daf2e69989..44924824fa41 100644 --- a/drivers/usb/host/ohci-hcd.c +++ b/drivers/usb/host/ohci-hcd.c @@ -231,7 +231,8 @@ static int ohci_urb_enqueue ( /* Start up the I/O watchdog timer, if it's not running */ if (!timer_pending(&ohci->io_watchdog) && - list_empty(&ohci->eds_in_use)) { + list_empty(&ohci->eds_in_use) && + !(ohci->flags & OHCI_QUIRK_QEMU)) { ohci->prev_frame_no = ohci_frame_no(ohci); mod_timer(&ohci->io_watchdog, jiffies + IO_WATCHDOG_DELAY); @@ -994,7 +995,7 @@ static void ohci_stop (struct usb_hcd *hcd) /*-------------------------------------------------------------------------*/ -#if defined(CONFIG_PM) || defined(CONFIG_PCI) +#if defined(CONFIG_PM) || defined(CONFIG_USB_PCI) /* must not be called from interrupt context */ int ohci_restart(struct ohci_hcd *ohci) diff --git a/drivers/usb/host/ohci-pci.c b/drivers/usb/host/ohci-pci.c index bb1509675727..a84aebe9b0a9 100644 --- a/drivers/usb/host/ohci-pci.c +++ b/drivers/usb/host/ohci-pci.c @@ -164,6 +164,15 @@ static int ohci_quirk_amd700(struct usb_hcd *hcd) return 0; } +static int ohci_quirk_qemu(struct usb_hcd *hcd) +{ + struct ohci_hcd *ohci = hcd_to_ohci(hcd); + + ohci->flags |= OHCI_QUIRK_QEMU; + ohci_dbg(ohci, "enabled qemu quirk\n"); + return 0; +} + /* List of quirks for OHCI */ static const struct pci_device_id ohci_pci_quirks[] = { { @@ -214,6 +223,13 @@ static const struct pci_device_id ohci_pci_quirks[] = { PCI_DEVICE(PCI_VENDOR_ID_ATI, 0x4399), .driver_data = (unsigned long)ohci_quirk_amd700, }, + { + .vendor = PCI_VENDOR_ID_APPLE, + .device = 0x003f, + .subvendor = PCI_SUBVENDOR_ID_REDHAT_QUMRANET, + .subdevice = PCI_SUBDEVICE_ID_QEMU, + .driver_data = (unsigned long)ohci_quirk_qemu, + }, /* FIXME for some of the early AMD 760 southbridges, OHCI * won't work at all. blacklist them. diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c index 898b74086c12..6368fce43197 100644 --- a/drivers/usb/host/ohci-platform.c +++ b/drivers/usb/host/ohci-platform.c @@ -183,6 +183,9 @@ static int ohci_platform_probe(struct platform_device *dev) if (IS_ERR(priv->phys[phy_num])) { err = PTR_ERR(priv->phys[phy_num]); goto err_put_hcd; + } else if (!hcd->phy) { + /* Avoiding phy_get() in usb_add_hcd() */ + hcd->phy = priv->phys[phy_num]; } } diff --git a/drivers/usb/host/ohci.h b/drivers/usb/host/ohci.h index 37f1725e7a46..12742d002d2d 100644 --- a/drivers/usb/host/ohci.h +++ b/drivers/usb/host/ohci.h @@ -418,6 +418,7 @@ struct ohci_hcd { #define OHCI_QUIRK_AMD_PLL 0x200 /* AMD PLL quirk*/ #define OHCI_QUIRK_AMD_PREFETCH 0x400 /* pre-fetch for ISO transfer */ #define OHCI_QUIRK_GLOBAL_SUSPEND 0x800 /* must suspend ports */ +#define OHCI_QUIRK_QEMU 0x1000 /* relax timing expectations */ // there are also chip quirks/bugs in init logic @@ -438,7 +439,7 @@ struct ohci_hcd { }; -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI static inline int quirk_nec(struct ohci_hcd *ohci) { return ohci->flags & OHCI_QUIRK_NEC; diff --git a/drivers/usb/host/oxu210hp-hcd.c b/drivers/usb/host/oxu210hp-hcd.c index bcf531c44c70..ed20fb34c897 100644 --- a/drivers/usb/host/oxu210hp-hcd.c +++ b/drivers/usb/host/oxu210hp-hcd.c @@ -2708,7 +2708,7 @@ static int oxu_run(struct usb_hcd *hcd) /* hcc_params controls whether oxu->regs->segment must (!!!) * be used; it constrains QH/ITD/SITD and QTD locations. - * pci_pool consistent memory always uses segment zero. + * dma_pool consistent memory always uses segment zero. * streaming mappings for I/O buffers, like pci_map_single(), * can return segments above 4GB, if the device allows. * diff --git a/drivers/usb/host/pci-quirks.h b/drivers/usb/host/pci-quirks.h index c622ddf21c94..0222195bd5b0 100644 --- a/drivers/usb/host/pci-quirks.h +++ b/drivers/usb/host/pci-quirks.h @@ -1,7 +1,7 @@ #ifndef __LINUX_USB_PCI_QUIRKS_H #define __LINUX_USB_PCI_QUIRKS_H -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI void uhci_reset_hc(struct pci_dev *pdev, unsigned long base); int uhci_check_and_reset_hc(struct pci_dev *pdev, unsigned long base); int usb_amd_find_chipset_info(void); @@ -21,6 +21,6 @@ static inline void usb_amd_quirk_pll_enable(void) {} static inline void usb_amd_dev_put(void) {} static inline void usb_disable_xhci_ports(struct pci_dev *xhci_pdev) {} static inline void sb800_prefetch(struct device *dev, int on) {} -#endif /* CONFIG_PCI */ +#endif /* CONFIG_USB_PCI */ #endif /* __LINUX_USB_PCI_QUIRKS_H */ diff --git a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c index 683098afa93e..94b150196d4f 100644 --- a/drivers/usb/host/uhci-hcd.c +++ b/drivers/usb/host/uhci-hcd.c @@ -837,7 +837,7 @@ static int uhci_count_ports(struct usb_hcd *hcd) static const char hcd_name[] = "uhci_hcd"; -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI #include "uhci-pci.c" #define PCI_DRIVER uhci_pci_driver #endif diff --git a/drivers/usb/host/uhci-hcd.h b/drivers/usb/host/uhci-hcd.h index 6f986d82472d..7fa318a3091d 100644 --- a/drivers/usb/host/uhci-hcd.h +++ b/drivers/usb/host/uhci-hcd.h @@ -530,7 +530,7 @@ static inline void uhci_writeb(const struct uhci_hcd *uhci, u8 val, int reg) #else /* Support non-PCI host controllers */ -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI /* Support PCI and non-PCI host controllers */ #define uhci_has_pci_registers(u) ((u)->io_addr != 0) #else diff --git a/drivers/usb/host/xhci-dbg.c b/drivers/usb/host/xhci-dbg.c index 2b4a00fa735d..2c83b37ae8f2 100644 --- a/drivers/usb/host/xhci-dbg.c +++ b/drivers/usb/host/xhci-dbg.c @@ -254,157 +254,6 @@ void xhci_print_registers(struct xhci_hcd *xhci) xhci_print_ports(xhci); } -void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb) -{ - int i; - for (i = 0; i < 4; i++) - xhci_dbg(xhci, "Offset 0x%x = 0x%x\n", - i*4, trb->generic.field[i]); -} - -/** - * Debug a transfer request block (TRB). - */ -void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb) -{ - u64 address; - u32 type = le32_to_cpu(trb->link.control) & TRB_TYPE_BITMASK; - - switch (type) { - case TRB_TYPE(TRB_LINK): - xhci_dbg(xhci, "Link TRB:\n"); - xhci_print_trb_offsets(xhci, trb); - - address = le64_to_cpu(trb->link.segment_ptr); - xhci_dbg(xhci, "Next ring segment DMA address = 0x%llx\n", address); - - xhci_dbg(xhci, "Interrupter target = 0x%x\n", - GET_INTR_TARGET(le32_to_cpu(trb->link.intr_target))); - xhci_dbg(xhci, "Cycle bit = %u\n", - le32_to_cpu(trb->link.control) & TRB_CYCLE); - xhci_dbg(xhci, "Toggle cycle bit = %u\n", - le32_to_cpu(trb->link.control) & LINK_TOGGLE); - xhci_dbg(xhci, "No Snoop bit = %u\n", - le32_to_cpu(trb->link.control) & TRB_NO_SNOOP); - break; - case TRB_TYPE(TRB_TRANSFER): - address = le64_to_cpu(trb->trans_event.buffer); - /* - * FIXME: look at flags to figure out if it's an address or if - * the data is directly in the buffer field. - */ - xhci_dbg(xhci, "DMA address or buffer contents= %llu\n", address); - break; - case TRB_TYPE(TRB_COMPLETION): - address = le64_to_cpu(trb->event_cmd.cmd_trb); - xhci_dbg(xhci, "Command TRB pointer = %llu\n", address); - xhci_dbg(xhci, "Completion status = %u\n", - GET_COMP_CODE(le32_to_cpu(trb->event_cmd.status))); - xhci_dbg(xhci, "Flags = 0x%x\n", - le32_to_cpu(trb->event_cmd.flags)); - break; - default: - xhci_dbg(xhci, "Unknown TRB with TRB type ID %u\n", - (unsigned int) type>>10); - xhci_print_trb_offsets(xhci, trb); - break; - } -} - -/** - * Debug a segment with an xHCI ring. - * - * @return The Link TRB of the segment, or NULL if there is no Link TRB - * (which is a bug, since all segments must have a Link TRB). - * - * Prints out all TRBs in the segment, even those after the Link TRB. - * - * XXX: should we print out TRBs that the HC owns? As long as we don't - * write, that should be fine... We shouldn't expect that the memory pointed to - * by the TRB is valid at all. Do we care about ones the HC owns? Probably, - * for HC debugging. - */ -void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg) -{ - int i; - u64 addr = seg->dma; - union xhci_trb *trb = seg->trbs; - - for (i = 0; i < TRBS_PER_SEGMENT; i++) { - trb = &seg->trbs[i]; - xhci_dbg(xhci, "@%016llx %08x %08x %08x %08x\n", addr, - lower_32_bits(le64_to_cpu(trb->link.segment_ptr)), - upper_32_bits(le64_to_cpu(trb->link.segment_ptr)), - le32_to_cpu(trb->link.intr_target), - le32_to_cpu(trb->link.control)); - addr += sizeof(*trb); - } -} - -void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring) -{ - xhci_dbg(xhci, "Ring deq = %p (virt), 0x%llx (dma)\n", - ring->dequeue, - (unsigned long long)xhci_trb_virt_to_dma(ring->deq_seg, - ring->dequeue)); - xhci_dbg(xhci, "Ring deq updated %u times\n", - ring->deq_updates); - xhci_dbg(xhci, "Ring enq = %p (virt), 0x%llx (dma)\n", - ring->enqueue, - (unsigned long long)xhci_trb_virt_to_dma(ring->enq_seg, - ring->enqueue)); - xhci_dbg(xhci, "Ring enq updated %u times\n", - ring->enq_updates); -} - -/** - * Debugging for an xHCI ring, which is a queue broken into multiple segments. - * - * Print out each segment in the ring. Check that the DMA address in - * each link segment actually matches the segment's stored DMA address. - * Check that the link end bit is only set at the end of the ring. - * Check that the dequeue and enqueue pointers point to real data in this ring - * (not some other ring). - */ -void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring) -{ - /* FIXME: Throw an error if any segment doesn't have a Link TRB */ - struct xhci_segment *seg; - struct xhci_segment *first_seg = ring->first_seg; - xhci_debug_segment(xhci, first_seg); - - if (!ring->enq_updates && !ring->deq_updates) { - xhci_dbg(xhci, " Ring has not been updated\n"); - return; - } - for (seg = first_seg->next; seg != first_seg; seg = seg->next) - xhci_debug_segment(xhci, seg); -} - -void xhci_dbg_ep_rings(struct xhci_hcd *xhci, - unsigned int slot_id, unsigned int ep_index, - struct xhci_virt_ep *ep) -{ - int i; - struct xhci_ring *ring; - - if (ep->ep_state & EP_HAS_STREAMS) { - for (i = 1; i < ep->stream_info->num_streams; i++) { - ring = ep->stream_info->stream_rings[i]; - xhci_dbg(xhci, "Dev %d endpoint %d stream ID %d:\n", - slot_id, ep_index, i); - xhci_debug_segment(xhci, ring->deq_seg); - } - } else { - ring = ep->ring; - if (!ring) - return; - xhci_dbg(xhci, "Dev %d endpoint ring %d:\n", - slot_id, ep_index); - xhci_debug_segment(xhci, ring->deq_seg); - } -} - void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst) { u64 addr = erst->erst_dma_addr; @@ -434,166 +283,13 @@ void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci) upper_32_bits(val)); } -/* Print the last 32 bytes for 64-byte contexts */ -static void dbg_rsvd64(struct xhci_hcd *xhci, u64 *ctx, dma_addr_t dma) -{ - int i; - for (i = 0; i < 4; i++) { - xhci_dbg(xhci, "@%p (virt) @%08llx " - "(dma) %#08llx - rsvd64[%d]\n", - &ctx[4 + i], (unsigned long long)dma, - ctx[4 + i], i); - dma += 8; - } -} - char *xhci_get_slot_state(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) { struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx); + int state = GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)); - switch (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state))) { - case SLOT_STATE_ENABLED: - return "enabled/disabled"; - case SLOT_STATE_DEFAULT: - return "default"; - case SLOT_STATE_ADDRESSED: - return "addressed"; - case SLOT_STATE_CONFIGURED: - return "configured"; - default: - return "reserved"; - } -} - -static void xhci_dbg_slot_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx) -{ - /* Fields are 32 bits wide, DMA addresses are in bytes */ - int field_size = 32 / 8; - int i; - - struct xhci_slot_ctx *slot_ctx = xhci_get_slot_ctx(xhci, ctx); - dma_addr_t dma = ctx->dma + - ((unsigned long)slot_ctx - (unsigned long)ctx->bytes); - int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params); - - xhci_dbg(xhci, "Slot Context:\n"); - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info\n", - &slot_ctx->dev_info, - (unsigned long long)dma, slot_ctx->dev_info); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_info2\n", - &slot_ctx->dev_info2, - (unsigned long long)dma, slot_ctx->dev_info2); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tt_info\n", - &slot_ctx->tt_info, - (unsigned long long)dma, slot_ctx->tt_info); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - dev_state\n", - &slot_ctx->dev_state, - (unsigned long long)dma, slot_ctx->dev_state); - dma += field_size; - for (i = 0; i < 4; i++) { - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n", - &slot_ctx->reserved[i], (unsigned long long)dma, - slot_ctx->reserved[i], i); - dma += field_size; - } - - if (csz) - dbg_rsvd64(xhci, (u64 *)slot_ctx, dma); -} - -static void xhci_dbg_ep_ctx(struct xhci_hcd *xhci, - struct xhci_container_ctx *ctx, - unsigned int last_ep) -{ - int i, j; - int last_ep_ctx = 31; - /* Fields are 32 bits wide, DMA addresses are in bytes */ - int field_size = 32 / 8; - int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params); - - if (last_ep < 31) - last_ep_ctx = last_ep + 1; - for (i = 0; i < last_ep_ctx; i++) { - unsigned int epaddr = xhci_get_endpoint_address(i); - struct xhci_ep_ctx *ep_ctx = xhci_get_ep_ctx(xhci, ctx, i); - dma_addr_t dma = ctx->dma + - ((unsigned long)ep_ctx - (unsigned long)ctx->bytes); - - xhci_dbg(xhci, "%s Endpoint %02d Context (ep_index %02d):\n", - usb_endpoint_out(epaddr) ? "OUT" : "IN", - epaddr & USB_ENDPOINT_NUMBER_MASK, i); - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info\n", - &ep_ctx->ep_info, - (unsigned long long)dma, ep_ctx->ep_info); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - ep_info2\n", - &ep_ctx->ep_info2, - (unsigned long long)dma, ep_ctx->ep_info2); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08llx - deq\n", - &ep_ctx->deq, - (unsigned long long)dma, ep_ctx->deq); - dma += 2*field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - tx_info\n", - &ep_ctx->tx_info, - (unsigned long long)dma, ep_ctx->tx_info); - dma += field_size; - for (j = 0; j < 3; j++) { - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd[%d]\n", - &ep_ctx->reserved[j], - (unsigned long long)dma, - ep_ctx->reserved[j], j); - dma += field_size; - } - - if (csz) - dbg_rsvd64(xhci, (u64 *)ep_ctx, dma); - } -} - -void xhci_dbg_ctx(struct xhci_hcd *xhci, - struct xhci_container_ctx *ctx, - unsigned int last_ep) -{ - int i; - /* Fields are 32 bits wide, DMA addresses are in bytes */ - int field_size = 32 / 8; - dma_addr_t dma = ctx->dma; - int csz = HCC_64BYTE_CONTEXT(xhci->hcc_params); - - if (ctx->type == XHCI_CTX_TYPE_INPUT) { - struct xhci_input_control_ctx *ctrl_ctx = - xhci_get_input_control_ctx(ctx); - if (!ctrl_ctx) { - xhci_warn(xhci, "Could not get input context, bad type.\n"); - return; - } - - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - drop flags\n", - &ctrl_ctx->drop_flags, (unsigned long long)dma, - ctrl_ctx->drop_flags); - dma += field_size; - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - add flags\n", - &ctrl_ctx->add_flags, (unsigned long long)dma, - ctrl_ctx->add_flags); - dma += field_size; - for (i = 0; i < 6; i++) { - xhci_dbg(xhci, "@%p (virt) @%08llx (dma) %#08x - rsvd2[%d]\n", - &ctrl_ctx->rsvd2[i], (unsigned long long)dma, - ctrl_ctx->rsvd2[i], i); - dma += field_size; - } - - if (csz) - dbg_rsvd64(xhci, (u64 *)ctrl_ctx, dma); - } - - xhci_dbg_slot_ctx(xhci, ctx); - xhci_dbg_ep_ctx(xhci, ctx, last_ep); + return xhci_slot_state_string(state); } void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *), diff --git a/drivers/usb/host/xhci-hub.c b/drivers/usb/host/xhci-hub.c index 3bddeaa1e2d7..5e3e9d4c6956 100644 --- a/drivers/usb/host/xhci-hub.c +++ b/drivers/usb/host/xhci-hub.c @@ -392,10 +392,8 @@ static int xhci_stop_device(struct xhci_hcd *xhci, int slot_id, int suspend) trace_xhci_stop_device(virt_dev); cmd = xhci_alloc_command(xhci, false, true, GFP_NOIO); - if (!cmd) { - xhci_dbg(xhci, "Couldn't allocate command structure.\n"); + if (!cmd) return -ENOMEM; - } spin_lock_irqsave(&xhci->lock, flags); for (i = LAST_EP_INDEX; i > 0; i--) { @@ -540,6 +538,119 @@ static int xhci_get_ports(struct usb_hcd *hcd, __le32 __iomem ***port_array) return max_ports; } +static __le32 __iomem *xhci_get_port_io_addr(struct usb_hcd *hcd, int index) +{ + __le32 __iomem **port_array; + + xhci_get_ports(hcd, &port_array); + return port_array[index]; +} + +/* + * xhci_set_port_power() must be called with xhci->lock held. + * It will release and re-aquire the lock while calling ACPI + * method. + */ +static void xhci_set_port_power(struct xhci_hcd *xhci, struct usb_hcd *hcd, + u16 index, bool on, unsigned long *flags) +{ + __le32 __iomem *addr; + u32 temp; + + addr = xhci_get_port_io_addr(hcd, index); + temp = readl(addr); + temp = xhci_port_state_to_neutral(temp); + if (on) { + /* Power on */ + writel(temp | PORT_POWER, addr); + temp = readl(addr); + xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", + index, temp); + } else { + /* Power off */ + writel(temp & ~PORT_POWER, addr); + } + + spin_unlock_irqrestore(&xhci->lock, *flags); + temp = usb_acpi_power_manageable(hcd->self.root_hub, + index); + if (temp) + usb_acpi_set_power_state(hcd->self.root_hub, + index, on); + spin_lock_irqsave(&xhci->lock, *flags); +} + +static void xhci_port_set_test_mode(struct xhci_hcd *xhci, + u16 test_mode, u16 wIndex) +{ + u32 temp; + __le32 __iomem *addr; + + /* xhci only supports test mode for usb2 ports, i.e. xhci->main_hcd */ + addr = xhci_get_port_io_addr(xhci->main_hcd, wIndex); + temp = readl(addr + PORTPMSC); + temp |= test_mode << PORT_TEST_MODE_SHIFT; + writel(temp, addr + PORTPMSC); + xhci->test_mode = test_mode; + if (test_mode == TEST_FORCE_EN) + xhci_start(xhci); +} + +static int xhci_enter_test_mode(struct xhci_hcd *xhci, + u16 test_mode, u16 wIndex, unsigned long *flags) +{ + int i, retval; + + /* Disable all Device Slots */ + xhci_dbg(xhci, "Disable all slots\n"); + for (i = 1; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { + retval = xhci_disable_slot(xhci, NULL, i); + if (retval) + xhci_err(xhci, "Failed to disable slot %d, %d. Enter test mode anyway\n", + i, retval); + } + /* Put all ports to the Disable state by clear PP */ + xhci_dbg(xhci, "Disable all port (PP = 0)\n"); + /* Power off USB3 ports*/ + for (i = 0; i < xhci->num_usb3_ports; i++) + xhci_set_port_power(xhci, xhci->shared_hcd, i, false, flags); + /* Power off USB2 ports*/ + for (i = 0; i < xhci->num_usb2_ports; i++) + xhci_set_port_power(xhci, xhci->main_hcd, i, false, flags); + /* Stop the controller */ + xhci_dbg(xhci, "Stop controller\n"); + retval = xhci_halt(xhci); + if (retval) + return retval; + /* Disable runtime PM for test mode */ + pm_runtime_forbid(xhci_to_hcd(xhci)->self.controller); + /* Set PORTPMSC.PTC field to enter selected test mode */ + /* Port is selected by wIndex. port_id = wIndex + 1 */ + xhci_dbg(xhci, "Enter Test Mode: %d, Port_id=%d\n", + test_mode, wIndex + 1); + xhci_port_set_test_mode(xhci, test_mode, wIndex); + return retval; +} + +static int xhci_exit_test_mode(struct xhci_hcd *xhci) +{ + int retval; + + if (!xhci->test_mode) { + xhci_err(xhci, "Not in test mode, do nothing.\n"); + return 0; + } + if (xhci->test_mode == TEST_FORCE_EN && + !(xhci->xhc_state & XHCI_STATE_HALTED)) { + retval = xhci_halt(xhci); + if (retval) + return retval; + } + pm_runtime_allow(xhci_to_hcd(xhci)->self.controller); + xhci->test_mode = 0; + return xhci_reset(xhci); +} + void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, int port_id, u32 link_state) { @@ -895,6 +1006,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 link_state = 0; u16 wake_mask = 0; u16 timeout = 0; + u16 test_mode = 0; max_ports = xhci_get_ports(hcd, &port_array); bus_state = &xhci->bus_state[hcd_index(hcd)]; @@ -935,7 +1047,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, goto error; wIndex--; temp = readl(port_array[wIndex]); - if (temp == 0xffffffff) { + if (temp == ~(u32)0) { + xhci_hc_died(xhci); retval = -ENODEV; break; } @@ -968,6 +1081,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, link_state = (wIndex & 0xff00) >> 3; if (wValue == USB_PORT_FEAT_REMOTE_WAKE_MASK) wake_mask = wIndex & 0xff00; + if (wValue == USB_PORT_FEAT_TEST) + test_mode = (wIndex & 0xff00) >> 8; /* The MSB of wIndex is the U1/U2 timeout */ timeout = (wIndex & 0xff00) >> 8; wIndex &= 0xff; @@ -975,7 +1090,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, goto error; wIndex--; temp = readl(port_array[wIndex]); - if (temp == 0xffffffff) { + if (temp == ~(u32)0) { + xhci_hc_died(xhci); retval = -ENODEV; break; } @@ -1092,18 +1208,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, * However, hub_wq will ignore the roothub events until * the roothub is registered. */ - writel(temp | PORT_POWER, port_array[wIndex]); - - temp = readl(port_array[wIndex]); - xhci_dbg(xhci, "set port power, actual port %d status = 0x%x\n", wIndex, temp); - - spin_unlock_irqrestore(&xhci->lock, flags); - temp = usb_acpi_power_manageable(hcd->self.root_hub, - wIndex); - if (temp) - usb_acpi_set_power_state(hcd->self.root_hub, - wIndex, true); - spin_lock_irqsave(&xhci->lock, flags); + xhci_set_port_power(xhci, hcd, wIndex, true, &flags); break; case USB_PORT_FEAT_RESET: temp = (temp | PORT_RESET); @@ -1142,6 +1247,15 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, temp |= PORT_U2_TIMEOUT(timeout); writel(temp, port_array[wIndex] + PORTPMSC); break; + case USB_PORT_FEAT_TEST: + /* 4.19.6 Port Test Modes (USB2 Test Mode) */ + if (hcd->speed != HCD_USB2) + goto error; + if (test_mode > TEST_FORCE_EN || test_mode < TEST_J) + goto error; + retval = xhci_enter_test_mode(xhci, test_mode, wIndex, + &flags); + break; default: goto error; } @@ -1153,7 +1267,8 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, goto error; wIndex--; temp = readl(port_array[wIndex]); - if (temp == 0xffffffff) { + if (temp == ~(u32)0) { + xhci_hc_died(xhci); retval = -ENODEV; break; } @@ -1207,15 +1322,10 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, port_array[wIndex], temp); break; case USB_PORT_FEAT_POWER: - writel(temp & ~PORT_POWER, port_array[wIndex]); - - spin_unlock_irqrestore(&xhci->lock, flags); - temp = usb_acpi_power_manageable(hcd->self.root_hub, - wIndex); - if (temp) - usb_acpi_set_power_state(hcd->self.root_hub, - wIndex, false); - spin_lock_irqsave(&xhci->lock, flags); + xhci_set_port_power(xhci, hcd, wIndex, false, &flags); + break; + case USB_PORT_FEAT_TEST: + retval = xhci_exit_test_mode(xhci); break; default: goto error; @@ -1269,7 +1379,8 @@ int xhci_hub_status_data(struct usb_hcd *hcd, char *buf) /* For each port, did anything change? If so, set that bit in buf. */ for (i = 0; i < max_ports; i++) { temp = readl(port_array[i]); - if (temp == 0xffffffff) { + if (temp == ~(u32)0) { + xhci_hc_died(xhci); retval = -ENODEV; break; } diff --git a/drivers/usb/host/xhci-mem.c b/drivers/usb/host/xhci-mem.c index ba1853f4e407..bbe22bcc550a 100644 --- a/drivers/usb/host/xhci-mem.c +++ b/drivers/usb/host/xhci-mem.c @@ -288,6 +288,8 @@ void xhci_ring_free(struct xhci_hcd *xhci, struct xhci_ring *ring) if (!ring) return; + trace_xhci_ring_free(ring); + if (ring->first_seg) { if (ring->type == TYPE_STREAM) xhci_remove_stream_mapping(ring); @@ -313,9 +315,6 @@ static void xhci_initialize_ring_info(struct xhci_ring *ring, * handling ring expansion, set the cycle state equal to the old ring. */ ring->cycle_state = cycle_state; - /* Not necessary for new rings, but needed for re-initialized rings */ - ring->enq_updates = 0; - ring->deq_updates = 0; /* * Each segment has a link TRB, and leave an extra TRB for SW @@ -400,6 +399,7 @@ static struct xhci_ring *xhci_ring_alloc(struct xhci_hcd *xhci, cpu_to_le32(LINK_TOGGLE); } xhci_initialize_ring_info(ring, cycle_state); + trace_xhci_ring_alloc(ring); return ring; fail: @@ -504,6 +504,7 @@ int xhci_ring_expansion(struct xhci_hcd *xhci, struct xhci_ring *ring, } xhci_link_rings(xhci, ring, first, last, num_segs); + trace_xhci_ring_expansion(ring); xhci_dbg_trace(xhci, trace_xhci_dbg_ring_expansion, "ring expansion succeed, now has %d segments", ring->num_segs); @@ -586,7 +587,7 @@ static void xhci_free_stream_ctx(struct xhci_hcd *xhci, unsigned int num_stream_ctxs, struct xhci_stream_ctx *stream_ctx, dma_addr_t dma) { - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs; if (size > MEDIUM_STREAM_ARRAY_SIZE) @@ -614,7 +615,7 @@ static struct xhci_stream_ctx *xhci_alloc_stream_ctx(struct xhci_hcd *xhci, unsigned int num_stream_ctxs, dma_addr_t *dma, gfp_t mem_flags) { - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; size_t size = sizeof(struct xhci_stream_ctx) * num_stream_ctxs; if (size > MEDIUM_STREAM_ARRAY_SIZE) @@ -1502,6 +1503,17 @@ int xhci_endpoint_init(struct xhci_hcd *xhci, */ max_esit_payload = xhci_get_max_esit_payload(udev, ep); interval = xhci_get_endpoint_interval(udev, ep); + + /* Periodic endpoint bInterval limit quirk */ + if (usb_endpoint_xfer_int(&ep->desc) || + usb_endpoint_xfer_isoc(&ep->desc)) { + if ((xhci->quirks & XHCI_LIMIT_ENDPOINT_INTERVAL_7) && + udev->speed >= USB_SPEED_HIGH && + interval >= 7) { + interval = 6; + } + } + mult = xhci_get_endpoint_mult(udev, ep); max_packet = usb_endpoint_maxp(&ep->desc); max_burst = xhci_get_endpoint_max_burst(udev, ep); @@ -1686,7 +1698,7 @@ void xhci_slot_copy(struct xhci_hcd *xhci, static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) { int i; - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; int num_sp = HCS_MAX_SCRATCHPAD(xhci->hcs_params2); xhci_dbg_trace(xhci, trace_xhci_dbg_init, @@ -1709,36 +1721,27 @@ static int scratchpad_alloc(struct xhci_hcd *xhci, gfp_t flags) if (!xhci->scratchpad->sp_buffers) goto fail_sp3; - xhci->scratchpad->sp_dma_buffers = - kzalloc(sizeof(dma_addr_t) * num_sp, flags); - - if (!xhci->scratchpad->sp_dma_buffers) - goto fail_sp4; - xhci->dcbaa->dev_context_ptrs[0] = cpu_to_le64(xhci->scratchpad->sp_dma); for (i = 0; i < num_sp; i++) { dma_addr_t dma; void *buf = dma_alloc_coherent(dev, xhci->page_size, &dma, flags); if (!buf) - goto fail_sp5; + goto fail_sp4; xhci->scratchpad->sp_array[i] = dma; xhci->scratchpad->sp_buffers[i] = buf; - xhci->scratchpad->sp_dma_buffers[i] = dma; } return 0; - fail_sp5: + fail_sp4: for (i = i - 1; i >= 0; i--) { dma_free_coherent(dev, xhci->page_size, xhci->scratchpad->sp_buffers[i], - xhci->scratchpad->sp_dma_buffers[i]); + xhci->scratchpad->sp_array[i]); } - kfree(xhci->scratchpad->sp_dma_buffers); - fail_sp4: kfree(xhci->scratchpad->sp_buffers); fail_sp3: @@ -1758,7 +1761,7 @@ static void scratchpad_free(struct xhci_hcd *xhci) { int num_sp; int i; - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; if (!xhci->scratchpad) return; @@ -1768,9 +1771,8 @@ static void scratchpad_free(struct xhci_hcd *xhci) for (i = 0; i < num_sp; i++) { dma_free_coherent(dev, xhci->page_size, xhci->scratchpad->sp_buffers[i], - xhci->scratchpad->sp_dma_buffers[i]); + xhci->scratchpad->sp_array[i]); } - kfree(xhci->scratchpad->sp_dma_buffers); kfree(xhci->scratchpad->sp_buffers); dma_free_coherent(dev, num_sp * sizeof(u64), xhci->scratchpad->sp_array, @@ -1831,7 +1833,7 @@ void xhci_free_command(struct xhci_hcd *xhci, void xhci_mem_cleanup(struct xhci_hcd *xhci) { - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; int size; int i, j, num_ports; @@ -2373,7 +2375,7 @@ static int xhci_setup_port_arrays(struct xhci_hcd *xhci, gfp_t flags) int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) { dma_addr_t dma; - struct device *dev = xhci_to_hcd(xhci)->self.controller; + struct device *dev = xhci_to_hcd(xhci)->self.sysdev; unsigned int val, val2; u64 val_64; struct xhci_segment *seg; @@ -2419,7 +2421,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) writel(val, &xhci->op_regs->config_reg); /* - * Section 5.4.8 - doorbell array must be + * xHCI section 5.4.6 - doorbell array must be * "physically contiguous and 64-byte (cache line) aligned". */ xhci->dcbaa = dma_alloc_coherent(dev, sizeof(*xhci->dcbaa), &dma, @@ -2480,7 +2482,7 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) (xhci->cmd_ring->first_seg->dma & (u64) ~CMD_RING_RSVD_BITS) | xhci->cmd_ring->cycle_state; xhci_dbg_trace(xhci, trace_xhci_dbg_init, - "// Setting command ring address to 0x%x", val); + "// Setting command ring address to 0x%016llx", val_64); xhci_write_64(xhci, val_64, &xhci->op_regs->cmd_ring); xhci_dbg_cmd_ptrs(xhci); @@ -2601,7 +2603,6 @@ int xhci_mem_init(struct xhci_hcd *xhci, gfp_t flags) return 0; fail: - xhci_warn(xhci, "Couldn't initialize memory\n"); xhci_halt(xhci); xhci_reset(xhci); xhci_mem_cleanup(xhci); diff --git a/drivers/usb/host/xhci-pci.c b/drivers/usb/host/xhci-pci.c index fc99f51d12e1..7b86508ac8cf 100644 --- a/drivers/usb/host/xhci-pci.c +++ b/drivers/usb/host/xhci-pci.c @@ -199,6 +199,9 @@ static void xhci_pci_quirks(struct device *dev, struct xhci_hcd *xhci) pdev->device == 0x1042) xhci->quirks |= XHCI_BROKEN_STREAMS; + if (pdev->vendor == PCI_VENDOR_ID_TI && pdev->device == 0x8241) + xhci->quirks |= XHCI_LIMIT_ENDPOINT_INTERVAL_7; + if (xhci->quirks & XHCI_RESET_ON_RESUME) xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, "QUIRK: Resetting on resume"); diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c index 6ed468fa7d5e..7c2a9e7c8e0f 100644 --- a/drivers/usb/host/xhci-plat.c +++ b/drivers/usb/host/xhci-plat.c @@ -14,6 +14,7 @@ #include <linux/clk.h> #include <linux/dma-mapping.h> #include <linux/module.h> +#include <linux/pci.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/usb/phy.h> @@ -54,6 +55,16 @@ static int xhci_priv_init_quirk(struct usb_hcd *hcd) return priv->init_quirk(hcd); } +static int xhci_priv_resume_quirk(struct usb_hcd *hcd) +{ + struct xhci_plat_priv *priv = hcd_to_xhci_priv(hcd); + + if (!priv->resume_quirk) + return 0; + + return priv->resume_quirk(hcd); +} + static void xhci_plat_quirks(struct device *dev, struct xhci_hcd *xhci) { /* @@ -92,18 +103,21 @@ static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen2 = { .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V1, .init_quirk = xhci_rcar_init_quirk, .plat_start = xhci_rcar_start, + .resume_quirk = xhci_rcar_resume_quirk, }; static const struct xhci_plat_priv xhci_plat_renesas_rcar_gen3 = { .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V2, .init_quirk = xhci_rcar_init_quirk, .plat_start = xhci_rcar_start, + .resume_quirk = xhci_rcar_resume_quirk, }; static const struct xhci_plat_priv xhci_plat_renesas_rcar_r8a7796 = { .firmware_name = XHCI_RCAR_FIRMWARE_NAME_V3, .init_quirk = xhci_rcar_init_quirk, .plat_start = xhci_rcar_start, + .resume_quirk = xhci_rcar_resume_quirk, }; static const struct of_device_id usb_xhci_of_match[] = { @@ -148,6 +162,7 @@ static int xhci_plat_probe(struct platform_device *pdev) { const struct of_device_id *match; const struct hc_driver *driver; + struct device *sysdev; struct xhci_hcd *xhci; struct resource *res; struct usb_hcd *hcd; @@ -164,24 +179,47 @@ static int xhci_plat_probe(struct platform_device *pdev) if (irq < 0) return -ENODEV; + /* + * sysdev must point to a device that is known to the system firmware + * or PCI hardware. We handle these three cases here: + * 1. xhci_plat comes from firmware + * 2. xhci_plat is child of a device from firmware (dwc3-plat) + * 3. xhci_plat is grandchild of a pci device (dwc3-pci) + */ + sysdev = &pdev->dev; + if (sysdev->parent && !sysdev->of_node && sysdev->parent->of_node) + sysdev = sysdev->parent; +#ifdef CONFIG_PCI + else if (sysdev->parent && sysdev->parent->parent && + sysdev->parent->parent->bus == &pci_bus_type) + sysdev = sysdev->parent->parent; +#endif + /* Try to set 64-bit DMA first */ - if (!pdev->dev.dma_mask) + if (WARN_ON(!sysdev->dma_mask)) /* Platform did not initialize dma_mask */ - ret = dma_coerce_mask_and_coherent(&pdev->dev, + ret = dma_coerce_mask_and_coherent(sysdev, DMA_BIT_MASK(64)); else - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); + ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(64)); /* If seting 64-bit DMA mask fails, fall back to 32-bit DMA mask */ if (ret) { - ret = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); + ret = dma_set_mask_and_coherent(sysdev, DMA_BIT_MASK(32)); if (ret) return ret; } - hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev)); - if (!hcd) - return -ENOMEM; + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + pm_runtime_get_noresume(&pdev->dev); + + hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, + dev_name(&pdev->dev), NULL); + if (!hcd) { + ret = -ENOMEM; + goto disable_runtime; + } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); hcd->regs = devm_ioremap_resource(&pdev->dev, res); @@ -222,20 +260,20 @@ static int xhci_plat_probe(struct platform_device *pdev) xhci->clk = clk; xhci->main_hcd = hcd; - xhci->shared_hcd = usb_create_shared_hcd(driver, &pdev->dev, + xhci->shared_hcd = __usb_create_hcd(driver, sysdev, &pdev->dev, dev_name(&pdev->dev), hcd); if (!xhci->shared_hcd) { ret = -ENOMEM; goto disable_clk; } - if (device_property_read_bool(&pdev->dev, "usb3-lpm-capable")) + if (device_property_read_bool(sysdev, "usb3-lpm-capable")) xhci->quirks |= XHCI_LPM_SUPPORT; if (device_property_read_bool(&pdev->dev, "quirk-broken-port-ped")) xhci->quirks |= XHCI_BROKEN_PORT_PED; - hcd->usb_phy = devm_usb_get_phy_by_phandle(&pdev->dev, "usb-phy", 0); + hcd->usb_phy = devm_usb_get_phy_by_phandle(sysdev, "usb-phy", 0); if (IS_ERR(hcd->usb_phy)) { ret = PTR_ERR(hcd->usb_phy); if (ret == -EPROBE_DEFER) @@ -258,6 +296,15 @@ static int xhci_plat_probe(struct platform_device *pdev) if (ret) goto dealloc_usb2_hcd; + device_enable_async_suspend(&pdev->dev); + pm_runtime_put_noidle(&pdev->dev); + + /* + * Prevent runtime pm from being on as default, users should enable + * runtime pm using power/control in sysfs. + */ + pm_runtime_forbid(&pdev->dev); + return 0; @@ -277,6 +324,10 @@ disable_clk: put_hcd: usb_put_hcd(hcd); +disable_runtime: + pm_runtime_put_noidle(&pdev->dev); + pm_runtime_disable(&pdev->dev); + return ret; } @@ -298,14 +349,17 @@ static int xhci_plat_remove(struct platform_device *dev) clk_disable_unprepare(clk); usb_put_hcd(hcd); + pm_runtime_set_suspended(&dev->dev); + pm_runtime_disable(&dev->dev); + return 0; } -#ifdef CONFIG_PM_SLEEP -static int xhci_plat_suspend(struct device *dev) +static int __maybe_unused xhci_plat_suspend(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ret; /* * xhci_suspend() needs `do_wakeup` to know whether host is allowed @@ -315,24 +369,53 @@ static int xhci_plat_suspend(struct device *dev) * reconsider this when xhci_plat_suspend enlarges its scope, e.g., * also applies to runtime suspend. */ - return xhci_suspend(xhci, device_may_wakeup(dev)); + ret = xhci_suspend(xhci, device_may_wakeup(dev)); + + if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) + clk_disable_unprepare(xhci->clk); + + return ret; } -static int xhci_plat_resume(struct device *dev) +static int __maybe_unused xhci_plat_resume(struct device *dev) { struct usb_hcd *hcd = dev_get_drvdata(dev); struct xhci_hcd *xhci = hcd_to_xhci(hcd); + int ret; + + if (!device_may_wakeup(dev) && !IS_ERR(xhci->clk)) + clk_prepare_enable(xhci->clk); + + ret = xhci_priv_resume_quirk(hcd); + if (ret) + return ret; + + return xhci_resume(xhci, 0); +} + +static int __maybe_unused xhci_plat_runtime_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); + + return xhci_suspend(xhci, true); +} + +static int __maybe_unused xhci_plat_runtime_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + struct xhci_hcd *xhci = hcd_to_xhci(hcd); return xhci_resume(xhci, 0); } static const struct dev_pm_ops xhci_plat_pm_ops = { SET_SYSTEM_SLEEP_PM_OPS(xhci_plat_suspend, xhci_plat_resume) + + SET_RUNTIME_PM_OPS(xhci_plat_runtime_suspend, + xhci_plat_runtime_resume, + NULL) }; -#define DEV_PM_OPS (&xhci_plat_pm_ops) -#else -#define DEV_PM_OPS NULL -#endif /* CONFIG_PM */ static const struct acpi_device_id usb_xhci_acpi_match[] = { /* XHCI-compliant USB Controller */ @@ -347,7 +430,7 @@ static struct platform_driver usb_xhci_driver = { .shutdown = usb_hcd_platform_shutdown, .driver = { .name = "xhci-hcd", - .pm = DEV_PM_OPS, + .pm = &xhci_plat_pm_ops, .of_match_table = of_match_ptr(usb_xhci_of_match), .acpi_match_table = ACPI_PTR(usb_xhci_acpi_match), }, diff --git a/drivers/usb/host/xhci-plat.h b/drivers/usb/host/xhci-plat.h index 9af0cb48053f..29b227895b07 100644 --- a/drivers/usb/host/xhci-plat.h +++ b/drivers/usb/host/xhci-plat.h @@ -17,6 +17,7 @@ struct xhci_plat_priv { const char *firmware_name; void (*plat_start)(struct usb_hcd *); int (*init_quirk)(struct usb_hcd *); + int (*resume_quirk)(struct usb_hcd *); }; #define hcd_to_xhci_priv(h) ((struct xhci_plat_priv *)hcd_to_xhci(h)->priv) diff --git a/drivers/usb/host/xhci-rcar.c b/drivers/usb/host/xhci-rcar.c index d28df386e780..07278228214b 100644 --- a/drivers/usb/host/xhci-rcar.c +++ b/drivers/usb/host/xhci-rcar.c @@ -198,3 +198,14 @@ int xhci_rcar_init_quirk(struct usb_hcd *hcd) return xhci_rcar_download_firmware(hcd); } + +int xhci_rcar_resume_quirk(struct usb_hcd *hcd) +{ + int ret; + + ret = xhci_rcar_download_firmware(hcd); + if (!ret) + xhci_rcar_start(hcd); + + return ret; +} diff --git a/drivers/usb/host/xhci-rcar.h b/drivers/usb/host/xhci-rcar.h index d2ffe20401cf..d247951147a1 100644 --- a/drivers/usb/host/xhci-rcar.h +++ b/drivers/usb/host/xhci-rcar.h @@ -18,6 +18,7 @@ #if IS_ENABLED(CONFIG_USB_XHCI_RCAR) void xhci_rcar_start(struct usb_hcd *hcd); int xhci_rcar_init_quirk(struct usb_hcd *hcd); +int xhci_rcar_resume_quirk(struct usb_hcd *hcd); #else static inline void xhci_rcar_start(struct usb_hcd *hcd) { @@ -27,5 +28,10 @@ static inline int xhci_rcar_init_quirk(struct usb_hcd *hcd) { return 0; } + +static inline int xhci_rcar_resume_quirk(struct usb_hcd *hcd) +{ + return 0; +} #endif #endif /* _XHCI_RCAR_H */ diff --git a/drivers/usb/host/xhci-ring.c b/drivers/usb/host/xhci-ring.c index a3309aa02993..74bf5c60a260 100644 --- a/drivers/usb/host/xhci-ring.c +++ b/drivers/usb/host/xhci-ring.c @@ -167,8 +167,6 @@ static void next_trb(struct xhci_hcd *xhci, */ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) { - ring->deq_updates++; - /* event ring doesn't have link trbs, check for last trb */ if (ring->type == TYPE_EVENT) { if (!last_trb_on_seg(ring->deq_seg, ring->dequeue)) { @@ -191,6 +189,9 @@ static void inc_deq(struct xhci_hcd *xhci, struct xhci_ring *ring) ring->deq_seg = ring->deq_seg->next; ring->dequeue = ring->deq_seg->trbs; } + + trace_xhci_inc_deq(ring); + return; } @@ -223,7 +224,6 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, ring->num_trbs_free--; next = ++(ring->enqueue); - ring->enq_updates++; /* Update the dequeue pointer further if that was a link TRB */ while (trb_is_link(next)) { @@ -259,6 +259,8 @@ static void inc_enq(struct xhci_hcd *xhci, struct xhci_ring *ring, ring->enqueue = ring->enq_seg->trbs; next = ring->enqueue; } + + trace_xhci_inc_enq(ring); } /* @@ -359,21 +361,19 @@ static int xhci_abort_cmd_ring(struct xhci_hcd *xhci, unsigned long flags) xhci_write_64(xhci, temp_64 | CMD_RING_ABORT, &xhci->op_regs->cmd_ring); - /* Section 4.6.1.2 of xHCI 1.0 spec says software should - * time the completion od all xHCI commands, including - * the Command Abort operation. If software doesn't see - * CRR negated in a timely manner (e.g. longer than 5 - * seconds), then it should assume that the there are - * larger problems with the xHC and assert HCRST. + /* Section 4.6.1.2 of xHCI 1.0 spec says software should also time the + * completion of the Command Abort operation. If CRR is not negated in 5 + * seconds then driver handles it as if host died (-ENODEV). + * In the future we should distinguish between -ENODEV and -ETIMEDOUT + * and try to recover a -ETIMEDOUT with a host controller reset. */ ret = xhci_handshake(&xhci->op_regs->cmd_ring, CMD_RING_RUNNING, 0, 5 * 1000 * 1000); if (ret < 0) { - xhci_err(xhci, - "Stop command ring failed, maybe the host is dead\n"); - xhci->xhc_state |= XHCI_STATE_DYING; + xhci_err(xhci, "Abort failed to stop command ring: %d\n", ret); xhci_halt(xhci); - return -ESHUTDOWN; + xhci_hc_died(xhci); + return ret; } /* * Writing the CMD_RING_ABORT bit should cause a cmd completion event, @@ -689,6 +689,8 @@ static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, struct xhci_virt_ep *ep; struct xhci_td *cur_td = NULL; struct xhci_td *last_unlinked_td; + struct xhci_ep_ctx *ep_ctx; + struct xhci_virt_device *vdev; struct xhci_dequeue_state deq_state; @@ -702,6 +704,11 @@ static void xhci_handle_cmd_stop_ep(struct xhci_hcd *xhci, int slot_id, memset(&deq_state, 0, sizeof(deq_state)); ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3])); + + vdev = xhci->devs[slot_id]; + ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); + trace_xhci_handle_cmd_stop_ep(ep_ctx); + ep = &xhci->devs[slot_id]->eps[ep_index]; last_unlinked_td = list_last_entry(&ep->cancelled_td_list, struct xhci_td, cancelled_td_list); @@ -866,6 +873,40 @@ static void xhci_kill_endpoint_urbs(struct xhci_hcd *xhci, } } +/* + * host controller died, register read returns 0xffffffff + * Complete pending commands, mark them ABORTED. + * URBs need to be given back as usb core might be waiting with device locks + * held for the URBs to finish during device disconnect, blocking host remove. + * + * Call with xhci->lock held. + * lock is relased and re-acquired while giving back urb. + */ +void xhci_hc_died(struct xhci_hcd *xhci) +{ + int i, j; + + if (xhci->xhc_state & XHCI_STATE_DYING) + return; + + xhci_err(xhci, "xHCI host controller not responding, assume dead\n"); + xhci->xhc_state |= XHCI_STATE_DYING; + + xhci_cleanup_command_queue(xhci); + + /* return any pending urbs, remove may be waiting for them */ + for (i = 0; i <= HCS_MAX_SLOTS(xhci->hcs_params1); i++) { + if (!xhci->devs[i]) + continue; + for (j = 0; j < 31; j++) + xhci_kill_endpoint_urbs(xhci, i, j); + } + + /* inform usb core hc died if PCI remove isn't already handling it */ + if (!(xhci->xhc_state & XHCI_STATE_REMOVING)) + usb_hc_died(xhci_to_hcd(xhci)); +} + /* Watchdog timer function for when a stop endpoint command fails to complete. * In this case, we assume the host controller is broken or dying or dead. The * host may still be completing some other events, so we have to be careful to @@ -887,7 +928,6 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) { struct xhci_hcd *xhci; struct xhci_virt_ep *ep; - int ret, i, j; unsigned long flags; ep = (struct xhci_virt_ep *) arg; @@ -904,52 +944,22 @@ void xhci_stop_endpoint_command_watchdog(unsigned long arg) } xhci_warn(xhci, "xHCI host not responding to stop endpoint command.\n"); - xhci_warn(xhci, "Assuming host is dying, halting host.\n"); - /* Oops, HC is dead or dying or at least not responding to the stop - * endpoint command. - */ - - xhci->xhc_state |= XHCI_STATE_DYING; ep->ep_state &= ~EP_STOP_CMD_PENDING; - /* Disable interrupts from the host controller and start halting it */ - xhci_quiesce(xhci); - spin_unlock_irqrestore(&xhci->lock, flags); + xhci_halt(xhci); - ret = xhci_halt(xhci); + /* + * handle a stop endpoint cmd timeout as if host died (-ENODEV). + * In the future we could distinguish between -ENODEV and -ETIMEDOUT + * and try to recover a -ETIMEDOUT with a host controller reset + */ + xhci_hc_died(xhci); - spin_lock_irqsave(&xhci->lock, flags); - if (ret < 0) { - /* This is bad; the host is not responding to commands and it's - * not allowing itself to be halted. At least interrupts are - * disabled. If we call usb_hc_died(), it will attempt to - * disconnect all device drivers under this host. Those - * disconnect() methods will wait for all URBs to be unlinked, - * so we must complete them. - */ - xhci_warn(xhci, "Non-responsive xHCI host is not halting.\n"); - xhci_warn(xhci, "Completing active URBs anyway.\n"); - /* We could turn all TDs on the rings to no-ops. This won't - * help if the host has cached part of the ring, and is slow if - * we want to preserve the cycle bit. Skip it and hope the host - * doesn't touch the memory. - */ - } - for (i = 0; i < MAX_HC_SLOTS; i++) { - if (!xhci->devs[i]) - continue; - for (j = 0; j < 31; j++) - xhci_kill_endpoint_urbs(xhci, i, j); - } spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "Calling usb_hc_died()"); - usb_hc_died(xhci_to_hcd(xhci)); - xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, "xHCI host controller is dead."); } - static void update_ring_for_set_deq_completion(struct xhci_hcd *xhci, struct xhci_virt_device *dev, struct xhci_ring *ep_ring, @@ -1029,6 +1039,8 @@ static void xhci_handle_cmd_set_deq(struct xhci_hcd *xhci, int slot_id, ep_ctx = xhci_get_ep_ctx(xhci, dev->out_ctx, ep_index); slot_ctx = xhci_get_slot_ctx(xhci, dev->out_ctx); + trace_xhci_handle_cmd_set_deq(slot_ctx); + trace_xhci_handle_cmd_set_deq_ep(ep_ctx); if (cmd_comp_code != COMP_SUCCESS) { unsigned int ep_state; @@ -1099,9 +1111,15 @@ cleanup: static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, union xhci_trb *trb, u32 cmd_comp_code) { + struct xhci_virt_device *vdev; + struct xhci_ep_ctx *ep_ctx; unsigned int ep_index; ep_index = TRB_TO_EP_INDEX(le32_to_cpu(trb->generic.field[3])); + vdev = xhci->devs[slot_id]; + ep_ctx = xhci_get_ep_ctx(xhci, vdev->out_ctx, ep_index); + trace_xhci_handle_cmd_reset_ep(ep_ctx); + /* This command will only fail if the endpoint wasn't halted, * but we don't care. */ @@ -1114,11 +1132,11 @@ static void xhci_handle_cmd_reset_ep(struct xhci_hcd *xhci, int slot_id, */ if (xhci->quirks & XHCI_RESET_EP_QUIRK) { struct xhci_command *command; + command = xhci_alloc_command(xhci, false, false, GFP_ATOMIC); - if (!command) { - xhci_warn(xhci, "WARN Cannot submit cfg ep: ENOMEM\n"); + if (!command) return; - } + xhci_dbg_trace(xhci, trace_xhci_dbg_quirks, "Queueing configure endpoint command"); xhci_queue_configure_endpoint(xhci, command, @@ -1143,10 +1161,15 @@ static void xhci_handle_cmd_enable_slot(struct xhci_hcd *xhci, int slot_id, static void xhci_handle_cmd_disable_slot(struct xhci_hcd *xhci, int slot_id) { struct xhci_virt_device *virt_dev; + struct xhci_slot_ctx *slot_ctx; virt_dev = xhci->devs[slot_id]; if (!virt_dev) return; + + slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); + trace_xhci_handle_cmd_disable_slot(slot_ctx); + if (xhci->quirks & XHCI_EP_LIMIT_QUIRK) /* Delete default control endpoint resources */ xhci_free_device_endpoint_resources(xhci, virt_dev, true); @@ -1158,6 +1181,7 @@ static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, { struct xhci_virt_device *virt_dev; struct xhci_input_control_ctx *ctrl_ctx; + struct xhci_ep_ctx *ep_ctx; unsigned int ep_index; unsigned int ep_state; u32 add_flags, drop_flags; @@ -1182,6 +1206,9 @@ static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, /* Input ctx add_flags are the endpoint index plus one */ ep_index = xhci_last_valid_endpoint(add_flags) - 1; + ep_ctx = xhci_get_ep_ctx(xhci, virt_dev->out_ctx, ep_index); + trace_xhci_handle_cmd_config_ep(ep_ctx); + /* A usb_set_interface() call directly after clearing a halted * condition may race on this quirky hardware. Not worth * worrying about, since this is prototype hardware. Not sure @@ -1206,9 +1233,26 @@ static void xhci_handle_cmd_config_ep(struct xhci_hcd *xhci, int slot_id, return; } +static void xhci_handle_cmd_addr_dev(struct xhci_hcd *xhci, int slot_id) +{ + struct xhci_virt_device *vdev; + struct xhci_slot_ctx *slot_ctx; + + vdev = xhci->devs[slot_id]; + slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); + trace_xhci_handle_cmd_addr_dev(slot_ctx); +} + static void xhci_handle_cmd_reset_dev(struct xhci_hcd *xhci, int slot_id, struct xhci_event_cmd *event) { + struct xhci_virt_device *vdev; + struct xhci_slot_ctx *slot_ctx; + + vdev = xhci->devs[slot_id]; + slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); + trace_xhci_handle_cmd_reset_dev(slot_ctx); + xhci_dbg(xhci, "Completed reset device command.\n"); if (!xhci->devs[slot_id]) xhci_warn(xhci, "Reset device command completion " @@ -1250,7 +1294,6 @@ void xhci_cleanup_command_queue(struct xhci_hcd *xhci) void xhci_handle_command_timeout(struct work_struct *work) { struct xhci_hcd *xhci; - int ret; unsigned long flags; u64 hw_ring_state; @@ -1271,22 +1314,17 @@ void xhci_handle_command_timeout(struct work_struct *work) /* Make sure command ring is running before aborting it */ hw_ring_state = xhci_read_64(xhci, &xhci->op_regs->cmd_ring); + if (hw_ring_state == ~(u64)0) { + xhci_hc_died(xhci); + goto time_out_completed; + } + if ((xhci->cmd_ring_state & CMD_RING_STATE_RUNNING) && (hw_ring_state & CMD_RING_RUNNING)) { /* Prevent new doorbell, and start command abort */ xhci->cmd_ring_state = CMD_RING_STATE_ABORTED; xhci_dbg(xhci, "Command timeout\n"); - ret = xhci_abort_cmd_ring(xhci, flags); - if (unlikely(ret == -ESHUTDOWN)) { - xhci_err(xhci, "Abort command ring failed\n"); - xhci_cleanup_command_queue(xhci); - spin_unlock_irqrestore(&xhci->lock, flags); - usb_hc_died(xhci_to_hcd(xhci)->primary_hcd); - xhci_dbg(xhci, "xHCI host controller is dead.\n"); - - return; - } - + xhci_abort_cmd_ring(xhci, flags); goto time_out_completed; } @@ -1384,6 +1422,7 @@ static void handle_cmd_completion(struct xhci_hcd *xhci, case TRB_EVAL_CONTEXT: break; case TRB_ADDR_DEV: + xhci_handle_cmd_addr_dev(xhci, slot_id); break; case TRB_STOP_RING: WARN_ON(slot_id != TRB_TO_SLOT_ID( @@ -2243,7 +2282,8 @@ static int handle_tx_event(struct xhci_hcd *xhci, slot_id = TRB_TO_SLOT_ID(le32_to_cpu(event->flags)); xdev = xhci->devs[slot_id]; if (!xdev) { - xhci_err(xhci, "ERROR Transfer event pointed to bad slot\n"); + xhci_err(xhci, "ERROR Transfer event pointed to bad slot %u\n", + slot_id); xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", (unsigned long long) xhci_trb_virt_to_dma( xhci->event_ring->deq_seg, @@ -2252,8 +2292,6 @@ static int handle_tx_event(struct xhci_hcd *xhci, upper_32_bits(le64_to_cpu(event->buffer)), le32_to_cpu(event->transfer_len), le32_to_cpu(event->flags)); - xhci_dbg(xhci, "Event ring:\n"); - xhci_debug_segment(xhci, xhci->event_ring->deq_seg); return -ENODEV; } @@ -2263,8 +2301,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep_ring = xhci_dma_to_transfer_ring(ep, le64_to_cpu(event->buffer)); ep_ctx = xhci_get_ep_ctx(xhci, xdev->out_ctx, ep_index); if (!ep_ring || GET_EP_CTX_STATE(ep_ctx) == EP_STATE_DISABLED) { - xhci_err(xhci, "ERROR Transfer event for disabled endpoint " - "or incorrect stream ring\n"); + xhci_err(xhci, + "ERROR Transfer event for disabled endpoint slot %u ep %u or incorrect stream ring\n", + slot_id, ep_index); xhci_err(xhci, "@%016llx %08x %08x %08x %08x\n", (unsigned long long) xhci_trb_virt_to_dma( xhci->event_ring->deq_seg, @@ -2273,8 +2312,6 @@ static int handle_tx_event(struct xhci_hcd *xhci, upper_32_bits(le64_to_cpu(event->buffer)), le32_to_cpu(event->transfer_len), le32_to_cpu(event->flags)); - xhci_dbg(xhci, "Event ring:\n"); - xhci_debug_segment(xhci, xhci->event_ring->deq_seg); return -ENODEV; } @@ -2298,45 +2335,62 @@ static int handle_tx_event(struct xhci_hcd *xhci, trb_comp_code = COMP_SHORT_PACKET; else xhci_warn_ratelimited(xhci, - "WARN Successful completion on short TX: needs XHCI_TRUST_TX_LENGTH quirk?\n"); + "WARN Successful completion on short TX for slot %u ep %u: needs XHCI_TRUST_TX_LENGTH quirk?\n", + slot_id, ep_index); case COMP_SHORT_PACKET: break; case COMP_STOPPED: - xhci_dbg(xhci, "Stopped on Transfer TRB\n"); + xhci_dbg(xhci, "Stopped on Transfer TRB for slot %u ep %u\n", + slot_id, ep_index); break; case COMP_STOPPED_LENGTH_INVALID: - xhci_dbg(xhci, "Stopped on No-op or Link TRB\n"); + xhci_dbg(xhci, + "Stopped on No-op or Link TRB for slot %u ep %u\n", + slot_id, ep_index); break; case COMP_STOPPED_SHORT_PACKET: - xhci_dbg(xhci, "Stopped with short packet transfer detected\n"); + xhci_dbg(xhci, + "Stopped with short packet transfer detected for slot %u ep %u\n", + slot_id, ep_index); break; case COMP_STALL_ERROR: - xhci_dbg(xhci, "Stalled endpoint\n"); + xhci_dbg(xhci, "Stalled endpoint for slot %u ep %u\n", slot_id, + ep_index); ep->ep_state |= EP_HALTED; status = -EPIPE; break; case COMP_TRB_ERROR: - xhci_warn(xhci, "WARN: TRB error on endpoint\n"); + xhci_warn(xhci, + "WARN: TRB error for slot %u ep %u on endpoint\n", + slot_id, ep_index); status = -EILSEQ; break; case COMP_SPLIT_TRANSACTION_ERROR: case COMP_USB_TRANSACTION_ERROR: - xhci_dbg(xhci, "Transfer error on endpoint\n"); + xhci_dbg(xhci, "Transfer error for slot %u ep %u on endpoint\n", + slot_id, ep_index); status = -EPROTO; break; case COMP_BABBLE_DETECTED_ERROR: - xhci_dbg(xhci, "Babble error on endpoint\n"); + xhci_dbg(xhci, "Babble error for slot %u ep %u on endpoint\n", + slot_id, ep_index); status = -EOVERFLOW; break; case COMP_DATA_BUFFER_ERROR: - xhci_warn(xhci, "WARN: HC couldn't access mem fast enough\n"); + xhci_warn(xhci, + "WARN: HC couldn't access mem fast enough for slot %u ep %u\n", + slot_id, ep_index); status = -ENOSR; break; case COMP_BANDWIDTH_OVERRUN_ERROR: - xhci_warn(xhci, "WARN: bandwidth overrun event on endpoint\n"); + xhci_warn(xhci, + "WARN: bandwidth overrun event for slot %u ep %u on endpoint\n", + slot_id, ep_index); break; case COMP_ISOCH_BUFFER_OVERRUN: - xhci_warn(xhci, "WARN: buffer overrun event on endpoint\n"); + xhci_warn(xhci, + "WARN: buffer overrun event for slot %u ep %u on endpoint", + slot_id, ep_index); break; case COMP_RING_UNDERRUN: /* @@ -2360,7 +2414,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep_index); goto cleanup; case COMP_INCOMPATIBLE_DEVICE_ERROR: - xhci_warn(xhci, "WARN: detect an incompatible device"); + xhci_warn(xhci, + "WARN: detect an incompatible device for slot %u ep %u", + slot_id, ep_index); status = -EPROTO; break; case COMP_MISSED_SERVICE_ERROR: @@ -2371,19 +2427,24 @@ static int handle_tx_event(struct xhci_hcd *xhci, * short transfer when process the ep_ring next time. */ ep->skip = true; - xhci_dbg(xhci, "Miss service interval error, set skip flag\n"); + xhci_dbg(xhci, + "Miss service interval error for slot %u ep %u, set skip flag\n", + slot_id, ep_index); goto cleanup; case COMP_NO_PING_RESPONSE_ERROR: ep->skip = true; - xhci_dbg(xhci, "No Ping response error, Skip one Isoc TD\n"); + xhci_dbg(xhci, + "No Ping response error for slot %u ep %u, Skip one Isoc TD\n", + slot_id, ep_index); goto cleanup; default: if (xhci_is_vendor_info_code(xhci, trb_comp_code)) { status = 0; break; } - xhci_warn(xhci, "ERROR Unknown event condition %u, HC probably busted\n", - trb_comp_code); + xhci_warn(xhci, + "ERROR Unknown event condition %u for slot %u ep %u , HC probably busted\n", + trb_comp_code, slot_id, ep_index); goto cleanup; } @@ -2402,15 +2463,11 @@ static int handle_tx_event(struct xhci_hcd *xhci, xhci_warn(xhci, "WARN Event TRB for slot %d ep %d with no TDs queued?\n", TRB_TO_SLOT_ID(le32_to_cpu(event->flags)), ep_index); - xhci_dbg(xhci, "Event TRB with TRB type ID %u\n", - (le32_to_cpu(event->flags) & - TRB_TYPE_BITMASK)>>10); - xhci_print_trb_offsets(xhci, (union xhci_trb *) event); } if (ep->skip) { ep->skip = false; - xhci_dbg(xhci, "td_list is empty while skip " - "flag set. Clear skip flag.\n"); + xhci_dbg(xhci, "td_list is empty while skip flag set. Clear skip flag for slot %u ep %u.\n", + slot_id, ep_index); } goto cleanup; } @@ -2418,8 +2475,8 @@ static int handle_tx_event(struct xhci_hcd *xhci, /* We've skipped all the TDs on the ep ring when ep->skip set */ if (ep->skip && td_num == 0) { ep->skip = false; - xhci_dbg(xhci, "All tds on the ep_ring skipped. " - "Clear skip flag.\n"); + xhci_dbg(xhci, "All tds on the ep_ring skipped. Clear skip flag for slot %u ep %u.\n", + slot_id, ep_index); goto cleanup; } @@ -2478,7 +2535,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, ep_ring->last_td_was_short = false; if (ep->skip) { - xhci_dbg(xhci, "Found td. Clear skip flag.\n"); + xhci_dbg(xhci, + "Found td. Clear skip flag for slot %u ep %u.\n", + slot_id, ep_index); ep->skip = false; } @@ -2495,7 +2554,9 @@ static int handle_tx_event(struct xhci_hcd *xhci, * the TD. */ if (trb_is_noop(ep_trb)) { - xhci_dbg(xhci, "ep_trb is a no-op TRB. Skip it\n"); + xhci_dbg(xhci, + "ep_trb is a no-op TRB. Skip it for slot %u ep %u\n", + slot_id, ep_index); goto cleanup; } @@ -2623,7 +2684,8 @@ irqreturn_t xhci_irq(struct usb_hcd *hcd) spin_lock(&xhci->lock); /* Check if the xHC generated the interrupt, or the irq is shared */ status = readl(&xhci->op_regs->status); - if (status == 0xffffffff) { + if (status == ~(u32)0) { + xhci_hc_died(xhci); ret = IRQ_HANDLED; goto out; } @@ -3942,10 +4004,8 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, /* This function gets called from contexts where it cannot sleep */ cmd = xhci_alloc_command(xhci, false, false, GFP_ATOMIC); - if (!cmd) { - xhci_warn(xhci, "WARN Cannot submit Set TR Deq Ptr: ENOMEM\n"); + if (!cmd) return; - } ep->queued_deq_seg = deq_state->new_deq_seg; ep->queued_deq_ptr = deq_state->new_deq_ptr; diff --git a/drivers/usb/host/xhci-trace.h b/drivers/usb/host/xhci-trace.h index 1ac2cdf8eece..8ce96de10e8a 100644 --- a/drivers/usb/host/xhci-trace.h +++ b/drivers/usb/host/xhci-trace.h @@ -231,6 +231,7 @@ DECLARE_EVENT_CLASS(xhci_log_urb, __field(int, epnum) __field(int, dir_in) __field(int, type) + __field(int, slot_id) ), TP_fast_assign( __entry->urb = urb; @@ -245,8 +246,9 @@ DECLARE_EVENT_CLASS(xhci_log_urb, __entry->epnum = usb_endpoint_num(&urb->ep->desc); __entry->dir_in = usb_endpoint_dir_in(&urb->ep->desc); __entry->type = usb_endpoint_type(&urb->ep->desc); + __entry->slot_id = urb->dev->slot_id; ), - TP_printk("ep%d%s-%s: urb %p pipe %u length %d/%d sgs %d/%d stream %d flags %08x", + TP_printk("ep%d%s-%s: urb %p pipe %u slot %d length %d/%d sgs %d/%d stream %d flags %08x", __entry->epnum, __entry->dir_in ? "in" : "out", ({ char *s; switch (__entry->type) { @@ -264,8 +266,8 @@ DECLARE_EVENT_CLASS(xhci_log_urb, break; default: s = "UNKNOWN"; - } s; }), __entry->urb, __entry->pipe, __entry->actual, - __entry->length, __entry->num_mapped_sgs, + } s; }), __entry->urb, __entry->pipe, __entry->slot_id, + __entry->actual, __entry->length, __entry->num_mapped_sgs, __entry->num_sgs, __entry->stream, __entry->flags ) ); @@ -285,6 +287,172 @@ DEFINE_EVENT(xhci_log_urb, xhci_urb_dequeue, TP_ARGS(urb) ); +DECLARE_EVENT_CLASS(xhci_log_ep_ctx, + TP_PROTO(struct xhci_ep_ctx *ctx), + TP_ARGS(ctx), + TP_STRUCT__entry( + __field(u32, info) + __field(u32, info2) + __field(u64, deq) + __field(u32, tx_info) + ), + TP_fast_assign( + __entry->info = le32_to_cpu(ctx->ep_info); + __entry->info2 = le32_to_cpu(ctx->ep_info2); + __entry->deq = le64_to_cpu(ctx->deq); + __entry->tx_info = le32_to_cpu(ctx->tx_info); + ), + TP_printk("%s", xhci_decode_ep_context(__entry->info, + __entry->info2, __entry->deq, __entry->tx_info) + ) +); + +DEFINE_EVENT(xhci_log_ep_ctx, xhci_handle_cmd_stop_ep, + TP_PROTO(struct xhci_ep_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_ep_ctx, xhci_handle_cmd_set_deq_ep, + TP_PROTO(struct xhci_ep_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_ep_ctx, xhci_handle_cmd_reset_ep, + TP_PROTO(struct xhci_ep_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_ep_ctx, xhci_handle_cmd_config_ep, + TP_PROTO(struct xhci_ep_ctx *ctx), + TP_ARGS(ctx) +); + +DECLARE_EVENT_CLASS(xhci_log_slot_ctx, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx), + TP_STRUCT__entry( + __field(u32, info) + __field(u32, info2) + __field(u32, tt_info) + __field(u32, state) + ), + TP_fast_assign( + __entry->info = le32_to_cpu(ctx->dev_info); + __entry->info2 = le32_to_cpu(ctx->dev_info2); + __entry->tt_info = le64_to_cpu(ctx->tt_info); + __entry->state = le32_to_cpu(ctx->dev_state); + ), + TP_printk("%s", xhci_decode_slot_context(__entry->info, + __entry->info2, __entry->tt_info, + __entry->state) + ) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_alloc_dev, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_free_dev, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_handle_cmd_disable_slot, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_discover_or_reset_device, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_setup_device_slot, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_handle_cmd_addr_dev, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_handle_cmd_reset_dev, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DEFINE_EVENT(xhci_log_slot_ctx, xhci_handle_cmd_set_deq, + TP_PROTO(struct xhci_slot_ctx *ctx), + TP_ARGS(ctx) +); + +DECLARE_EVENT_CLASS(xhci_log_ring, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring), + TP_STRUCT__entry( + __field(u32, type) + __field(void *, ring) + __field(dma_addr_t, enq) + __field(dma_addr_t, deq) + __field(dma_addr_t, enq_seg) + __field(dma_addr_t, deq_seg) + __field(unsigned int, num_segs) + __field(unsigned int, stream_id) + __field(unsigned int, cycle_state) + __field(unsigned int, num_trbs_free) + __field(unsigned int, bounce_buf_len) + ), + TP_fast_assign( + __entry->ring = ring; + __entry->type = ring->type; + __entry->num_segs = ring->num_segs; + __entry->stream_id = ring->stream_id; + __entry->enq_seg = ring->enq_seg->dma; + __entry->deq_seg = ring->deq_seg->dma; + __entry->cycle_state = ring->cycle_state; + __entry->num_trbs_free = ring->num_trbs_free; + __entry->bounce_buf_len = ring->bounce_buf_len; + __entry->enq = xhci_trb_virt_to_dma(ring->enq_seg, ring->enqueue); + __entry->deq = xhci_trb_virt_to_dma(ring->deq_seg, ring->dequeue); + ), + TP_printk("%s %p: enq %pad(%pad) deq %pad(%pad) segs %d stream %d free_trbs %d bounce %d cycle %d", + xhci_ring_type_string(__entry->type), __entry->ring, + &__entry->enq, &__entry->enq_seg, + &__entry->deq, &__entry->deq_seg, + __entry->num_segs, + __entry->stream_id, + __entry->num_trbs_free, + __entry->bounce_buf_len, + __entry->cycle_state + ) +); + +DEFINE_EVENT(xhci_log_ring, xhci_ring_alloc, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring) +); + +DEFINE_EVENT(xhci_log_ring, xhci_ring_free, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring) +); + +DEFINE_EVENT(xhci_log_ring, xhci_ring_expansion, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring) +); + +DEFINE_EVENT(xhci_log_ring, xhci_inc_enq, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring) +); + +DEFINE_EVENT(xhci_log_ring, xhci_inc_deq, + TP_PROTO(struct xhci_ring *ring), + TP_ARGS(ring) +); #endif /* __XHCI_TRACE_H */ /* this part must be outside header guard */ diff --git a/drivers/usb/host/xhci.c b/drivers/usb/host/xhci.c index 953fd8f62df0..2d1310220832 100644 --- a/drivers/usb/host/xhci.c +++ b/drivers/usb/host/xhci.c @@ -125,7 +125,7 @@ int xhci_halt(struct xhci_hcd *xhci) /* * Set the run bit and wait for the host to be running. */ -static int xhci_start(struct xhci_hcd *xhci) +int xhci_start(struct xhci_hcd *xhci) { u32 temp; int ret; @@ -216,31 +216,21 @@ int xhci_reset(struct xhci_hcd *xhci) return ret; } -#ifdef CONFIG_PCI -static int xhci_free_msi(struct xhci_hcd *xhci) -{ - int i; - - if (!xhci->msix_entries) - return -EINVAL; - - for (i = 0; i < xhci->msix_count; i++) - if (xhci->msix_entries[i].vector) - free_irq(xhci->msix_entries[i].vector, - xhci_to_hcd(xhci)); - return 0; -} +#ifdef CONFIG_USB_PCI /* * Set up MSI */ static int xhci_setup_msi(struct xhci_hcd *xhci) { int ret; + /* + * TODO:Check with MSI Soc for sysdev + */ struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); - ret = pci_enable_msi(pdev); - if (ret) { + ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_MSI); + if (ret < 0) { xhci_dbg_trace(xhci, trace_xhci_dbg_init, "failed to allocate MSI entry"); return ret; @@ -251,35 +241,13 @@ static int xhci_setup_msi(struct xhci_hcd *xhci) if (ret) { xhci_dbg_trace(xhci, trace_xhci_dbg_init, "disable MSI interrupt"); - pci_disable_msi(pdev); + pci_free_irq_vectors(pdev); } return ret; } /* - * Free IRQs - * free all IRQs request - */ -static void xhci_free_irq(struct xhci_hcd *xhci) -{ - struct pci_dev *pdev = to_pci_dev(xhci_to_hcd(xhci)->self.controller); - int ret; - - /* return if using legacy interrupt */ - if (xhci_to_hcd(xhci)->irq > 0) - return; - - ret = xhci_free_msi(xhci); - if (!ret) - return; - if (pdev->irq > 0) - free_irq(pdev->irq, xhci_to_hcd(xhci)); - - return; -} - -/* * Set up MSI-X */ static int xhci_setup_msix(struct xhci_hcd *xhci) @@ -298,28 +266,17 @@ static int xhci_setup_msix(struct xhci_hcd *xhci) xhci->msix_count = min(num_online_cpus() + 1, HCS_MAX_INTRS(xhci->hcs_params1)); - xhci->msix_entries = - kmalloc((sizeof(struct msix_entry))*xhci->msix_count, - GFP_KERNEL); - if (!xhci->msix_entries) - return -ENOMEM; - - for (i = 0; i < xhci->msix_count; i++) { - xhci->msix_entries[i].entry = i; - xhci->msix_entries[i].vector = 0; - } - - ret = pci_enable_msix_exact(pdev, xhci->msix_entries, xhci->msix_count); - if (ret) { + ret = pci_alloc_irq_vectors(pdev, xhci->msix_count, xhci->msix_count, + PCI_IRQ_MSIX); + if (ret < 0) { xhci_dbg_trace(xhci, trace_xhci_dbg_init, "Failed to enable MSI-X"); - goto free_entries; + return ret; } for (i = 0; i < xhci->msix_count; i++) { - ret = request_irq(xhci->msix_entries[i].vector, - xhci_msi_irq, - 0, "xhci_hcd", xhci_to_hcd(xhci)); + ret = request_irq(pci_irq_vector(pdev, i), xhci_msi_irq, 0, + "xhci_hcd", xhci_to_hcd(xhci)); if (ret) goto disable_msix; } @@ -329,11 +286,9 @@ static int xhci_setup_msix(struct xhci_hcd *xhci) disable_msix: xhci_dbg_trace(xhci, trace_xhci_dbg_init, "disable MSI-X interrupt"); - xhci_free_irq(xhci); - pci_disable_msix(pdev); -free_entries: - kfree(xhci->msix_entries); - xhci->msix_entries = NULL; + while (--i >= 0) + free_irq(pci_irq_vector(pdev, i), xhci_to_hcd(xhci)); + pci_free_irq_vectors(pdev); return ret; } @@ -346,27 +301,33 @@ static void xhci_cleanup_msix(struct xhci_hcd *xhci) if (xhci->quirks & XHCI_PLAT) return; - xhci_free_irq(xhci); + /* return if using legacy interrupt */ + if (hcd->irq > 0) + return; + + if (hcd->msix_enabled) { + int i; - if (xhci->msix_entries) { - pci_disable_msix(pdev); - kfree(xhci->msix_entries); - xhci->msix_entries = NULL; + for (i = 0; i < xhci->msix_count; i++) + free_irq(pci_irq_vector(pdev, i), xhci_to_hcd(xhci)); } else { - pci_disable_msi(pdev); + free_irq(pci_irq_vector(pdev, 0), xhci_to_hcd(xhci)); } + pci_free_irq_vectors(pdev); hcd->msix_enabled = 0; - return; } static void __maybe_unused xhci_msix_sync_irqs(struct xhci_hcd *xhci) { - int i; + struct usb_hcd *hcd = xhci_to_hcd(xhci); + + if (hcd->msix_enabled) { + struct pci_dev *pdev = to_pci_dev(hcd->self.controller); + int i; - if (xhci->msix_entries) { for (i = 0; i < xhci->msix_count; i++) - synchronize_irq(xhci->msix_entries[i].vector); + synchronize_irq(pci_irq_vector(pdev, i)); } } @@ -539,7 +500,7 @@ static int xhci_all_ports_seen_u0(struct xhci_hcd *xhci) * device contexts (?), set up a command ring segment (or two?), create event * ring (one for now). */ -int xhci_init(struct usb_hcd *hcd) +static int xhci_init(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); int retval = 0; @@ -619,16 +580,10 @@ int xhci_run(struct usb_hcd *hcd) if (ret) return ret; - xhci_dbg(xhci, "Command ring memory map follows:\n"); - xhci_debug_ring(xhci, xhci->cmd_ring); - xhci_dbg_ring_ptrs(xhci, xhci->cmd_ring); xhci_dbg_cmd_ptrs(xhci); xhci_dbg(xhci, "ERST memory map follows:\n"); xhci_dbg_erst(xhci, &xhci->erst); - xhci_dbg(xhci, "Event ring:\n"); - xhci_debug_ring(xhci, xhci->event_ring); - xhci_dbg_ring_ptrs(xhci, xhci->event_ring); temp_64 = xhci_read_64(xhci, &xhci->ir_set->erst_dequeue); temp_64 &= ~ERST_PTR_MASK; xhci_dbg_trace(xhci, trace_xhci_dbg_init, @@ -661,9 +616,11 @@ int xhci_run(struct usb_hcd *hcd) if (xhci->quirks & XHCI_NEC_HOST) { struct xhci_command *command; + command = xhci_alloc_command(xhci, false, false, GFP_KERNEL); if (!command) return -ENOMEM; + xhci_queue_vendor_command(xhci, command, 0, 0, 0, TRB_TYPE(TRB_NEC_GET_FW)); } @@ -682,28 +639,28 @@ EXPORT_SYMBOL_GPL(xhci_run); * Disable device contexts, disable IRQs, and quiesce the HC. * Reset the HC, finish any completed transactions, and cleanup memory. */ -void xhci_stop(struct usb_hcd *hcd) +static void xhci_stop(struct usb_hcd *hcd) { u32 temp; struct xhci_hcd *xhci = hcd_to_xhci(hcd); mutex_lock(&xhci->mutex); - if (!(xhci->xhc_state & XHCI_STATE_HALTED)) { - spin_lock_irq(&xhci->lock); - - xhci->xhc_state |= XHCI_STATE_HALTED; - xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; - xhci_halt(xhci); - xhci_reset(xhci); - spin_unlock_irq(&xhci->lock); - } - + /* Only halt host and free memory after both hcds are removed */ if (!usb_hcd_is_primary_hcd(hcd)) { + /* usb core will free this hcd shortly, unset pointer */ + xhci->shared_hcd = NULL; mutex_unlock(&xhci->mutex); return; } + spin_lock_irq(&xhci->lock); + xhci->xhc_state |= XHCI_STATE_HALTED; + xhci->cmd_ring_state = CMD_RING_STATE_STOPPED; + xhci_halt(xhci); + xhci_reset(xhci); + spin_unlock_irq(&xhci->lock); + xhci_cleanup_msix(xhci); /* Deleting Compliance Mode Recovery Timer */ @@ -721,7 +678,7 @@ void xhci_stop(struct usb_hcd *hcd) xhci_dbg_trace(xhci, trace_xhci_dbg_init, "// Disabling event ring interrupts"); temp = readl(&xhci->op_regs->status); - writel(temp & ~STS_EINT, &xhci->op_regs->status); + writel((temp & ~0x1fff) | STS_EINT, &xhci->op_regs->status); temp = readl(&xhci->ir_set->irq_pending); writel(ER_IRQ_DISABLE(temp), &xhci->ir_set->irq_pending); xhci_print_ir_set(xhci, 0); @@ -743,12 +700,12 @@ void xhci_stop(struct usb_hcd *hcd) * * This will only ever be called with the main usb_hcd (the USB3 roothub). */ -void xhci_shutdown(struct usb_hcd *hcd) +static void xhci_shutdown(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); if (xhci->quirks & XHCI_SPURIOUS_REBOOT) - usb_disable_xhci_ports(to_pci_dev(hcd->self.controller)); + usb_disable_xhci_ports(to_pci_dev(hcd->self.sysdev)); spin_lock_irq(&xhci->lock); xhci_halt(xhci); @@ -765,7 +722,7 @@ void xhci_shutdown(struct usb_hcd *hcd) /* Yet another workaround for spurious wakeups at shutdown with HSW */ if (xhci->quirks & XHCI_SPURIOUS_WAKEUP) - pci_set_power_state(to_pci_dev(hcd->self.controller), PCI_D3hot); + pci_set_power_state(to_pci_dev(hcd->self.sysdev), PCI_D3hot); } #ifdef CONFIG_PM @@ -1054,7 +1011,7 @@ int xhci_resume(struct xhci_hcd *xhci, bool hibernated) xhci_dbg(xhci, "// Disabling event ring interrupts\n"); temp = readl(&xhci->op_regs->status); - writel(temp & ~STS_EINT, &xhci->op_regs->status); + writel((temp & ~0x1fff) | STS_EINT, &xhci->op_regs->status); temp = readl(&xhci->ir_set->irq_pending); writel(ER_IRQ_DISABLE(temp), &xhci->ir_set->irq_pending); xhci_print_ir_set(xhci, 0); @@ -1176,7 +1133,7 @@ unsigned int xhci_get_endpoint_address(unsigned int ep_index) * endpoint index to create a bitmask. The slot context is bit 0, endpoint 0 is * bit 1, etc. */ -unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc) +static unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc) { return 1 << (xhci_get_endpoint_index(desc) + 1); } @@ -1185,7 +1142,7 @@ unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc) * endpoint index to create a bitmask. The slot context is bit 0, endpoint 0 is * bit 1, etc. */ -unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index) +static unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index) { return 1 << (ep_index + 1); } @@ -1306,11 +1263,6 @@ static int xhci_check_maxpacket(struct xhci_hcd *xhci, unsigned int slot_id, ctrl_ctx->add_flags = cpu_to_le32(EP0_FLAG); ctrl_ctx->drop_flags = 0; - xhci_dbg(xhci, "Slot %d input context\n", slot_id); - xhci_dbg_ctx(xhci, command->in_ctx, ep_index); - xhci_dbg(xhci, "Slot %d output context\n", slot_id); - xhci_dbg_ctx(xhci, out_ctx, ep_index); - ret = xhci_configure_endpoint(xhci, urb->dev, command, true, false); @@ -1329,7 +1281,7 @@ command_cleanup: * non-error returns are a promise to giveback() the urb later * we drop ownership so next owner (or urb unlink) can get it */ -int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) +static int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); unsigned long flags; @@ -1465,7 +1417,7 @@ free_priv: * Note that this function can be called in any context, or so says * usb_hcd_unlink_urb() */ -int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) +static int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) { unsigned long flags; int ret, i; @@ -1501,10 +1453,16 @@ int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status) if (!ep || !ep_ring) goto err_giveback; + /* If xHC is dead take it down and return ALL URBs in xhci_hc_died() */ temp = readl(&xhci->op_regs->status); - if (temp == 0xffffffff || (xhci->xhc_state & XHCI_STATE_HALTED)) { + if (temp == ~(u32)0 || xhci->xhc_state & XHCI_STATE_DYING) { + xhci_hc_died(xhci); + goto done; + } + + if (xhci->xhc_state & XHCI_STATE_HALTED) { xhci_dbg_trace(xhci, trace_xhci_dbg_cancel_urb, - "HW died, freeing TD."); + "HC halted, freeing TD manually."); for (i = urb_priv->num_tds_done; i < urb_priv->num_tds; i++) { @@ -1576,7 +1534,7 @@ err_giveback: * disabled, so there's no need for mutual exclusion to protect * the xhci->devs[slot_id] structure. */ -int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, +static int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep) { struct xhci_hcd *xhci; @@ -1659,7 +1617,7 @@ int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, * configuration or alt setting is installed in the device, so there's no need * for mutual exclusion to protect the xhci->devs[slot_id] structure. */ -int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, +static int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep) { struct xhci_hcd *xhci; @@ -1852,7 +1810,6 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci, struct usb_device *udev, u32 *cmd_status) { int ret; - struct xhci_virt_device *virt_dev = xhci->devs[udev->slot_id]; switch (*cmd_status) { case COMP_COMMAND_ABORTED: @@ -1873,7 +1830,6 @@ static int xhci_evaluate_context_result(struct xhci_hcd *xhci, case COMP_CONTEXT_STATE_ERROR: dev_warn(&udev->dev, "WARN: invalid context state for evaluate context command.\n"); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, 1); ret = -EINVAL; break; case COMP_INCOMPATIBLE_DEVICE_ERROR: @@ -2330,7 +2286,7 @@ static unsigned int xhci_get_ss_bw_consumed(struct xhci_bw_info *ep_bw) } -void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci, +static void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci, struct xhci_bw_info *ep_bw, struct xhci_interval_bw_table *bw_table, struct usb_device *udev, @@ -2595,6 +2551,12 @@ static int xhci_configure_endpoint(struct xhci_hcd *xhci, return -EINVAL; spin_lock_irqsave(&xhci->lock, flags); + + if (xhci->xhc_state & XHCI_STATE_DYING) { + spin_unlock_irqrestore(&xhci->lock, flags); + return -ESHUTDOWN; + } + virt_dev = xhci->devs[udev->slot_id]; ctrl_ctx = xhci_get_input_control_ctx(command->in_ctx); @@ -2689,7 +2651,7 @@ static void xhci_check_bw_drop_ep_streams(struct xhci_hcd *xhci, * else should be touching the xhci->devs[slot_id] structure, so we * don't need to take the xhci->lock for manipulating that. */ -int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) { int i; int ret = 0; @@ -2746,9 +2708,6 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) break; } } - xhci_dbg(xhci, "New Input Control Context:\n"); - xhci_dbg_ctx(xhci, virt_dev->in_ctx, - LAST_CTX_TO_EP_NUM(le32_to_cpu(slot_ctx->dev_info))); ret = xhci_configure_endpoint(xhci, udev, command, false, false); @@ -2756,10 +2715,6 @@ int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) /* Callee should call reset_bandwidth() */ goto command_cleanup; - xhci_dbg(xhci, "Output context after successful config ep cmd:\n"); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, - LAST_CTX_TO_EP_NUM(le32_to_cpu(slot_ctx->dev_info))); - /* Free any rings that were dropped, but not changed. */ for (i = 1; i < 31; i++) { if ((le32_to_cpu(ctrl_ctx->drop_flags) & (1 << (i + 1))) && @@ -2793,7 +2748,7 @@ command_cleanup: return ret; } -void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) +static void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci; struct xhci_virt_device *virt_dev; @@ -2826,9 +2781,6 @@ static void xhci_setup_input_ctx_for_config_ep(struct xhci_hcd *xhci, ctrl_ctx->drop_flags = cpu_to_le32(drop_flags); xhci_slot_copy(xhci, in_ctx, out_ctx); ctrl_ctx->add_flags |= cpu_to_le32(SLOT_FLAG); - - xhci_dbg(xhci, "Input Context:\n"); - xhci_dbg_ctx(xhci, in_ctx, xhci_last_valid_endpoint(add_flags)); } static void xhci_setup_input_ctx_for_quirk(struct xhci_hcd *xhci, @@ -2919,7 +2871,7 @@ void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, * Context: in_interrupt */ -void xhci_endpoint_reset(struct usb_hcd *hcd, +static void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep) { struct xhci_hcd *xhci; @@ -3095,7 +3047,7 @@ static u32 xhci_calculate_no_streams_bitmask(struct xhci_hcd *xhci, * hardware or endpoints claim they can't support the number of requested * stream IDs. */ -int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, +static int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint **eps, unsigned int num_eps, unsigned int num_streams, gfp_t mem_flags) { @@ -3129,10 +3081,9 @@ int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, } config_cmd = xhci_alloc_command(xhci, true, true, mem_flags); - if (!config_cmd) { - xhci_dbg(xhci, "Could not allocate xHCI command structure.\n"); + if (!config_cmd) return -ENOMEM; - } + ctrl_ctx = xhci_get_input_control_ctx(config_cmd->in_ctx); if (!ctrl_ctx) { xhci_warn(xhci, "%s: Could not get input context, bad type.\n", @@ -3259,7 +3210,7 @@ cleanup: * Modify the endpoint context state, submit a configure endpoint command, * and free all endpoint rings for streams if that completes successfully. */ -int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, +static int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint **eps, unsigned int num_eps, gfp_t mem_flags) { @@ -3391,7 +3342,8 @@ void xhci_free_device_endpoint_resources(struct xhci_hcd *xhci, * re-initialization during S3/S4. In this case, call xhci_alloc_dev() to * re-allocate the device. */ -int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_discover_or_reset_device(struct usb_hcd *hcd, + struct usb_device *udev) { int ret, i; unsigned long flags; @@ -3443,6 +3395,8 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) SLOT_STATE_DISABLED) return 0; + trace_xhci_discover_or_reset_device(slot_ctx); + xhci_dbg(xhci, "Resetting device with slot ID %u\n", slot_id); /* Allocate the command structure that holds the struct completion. * Assume we're in process context, since the normal device reset @@ -3539,9 +3493,6 @@ int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev) } /* If necessary, update the number of active TTs on this root port */ xhci_update_tt_active_eps(xhci, virt_dev, old_active_eps); - - xhci_dbg(xhci, "Output context after successful reset device cmd:\n"); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, last_freed_endpoint); ret = 0; command_cleanup: @@ -3554,12 +3505,11 @@ command_cleanup: * disconnected, and all traffic has been stopped and the endpoints have been * disabled. Free any HC data structures associated with that device. */ -void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) +static void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); struct xhci_virt_device *virt_dev; - unsigned long flags; - u32 state; + struct xhci_slot_ctx *slot_ctx; int i, ret; struct xhci_command *command; @@ -3587,6 +3537,8 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) } virt_dev = xhci->devs[udev->slot_id]; + slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); + trace_xhci_free_dev(slot_ctx); /* Stop any wayward timer functions (which may grab the lock) */ for (i = 0; i < 31; i++) { @@ -3594,30 +3546,50 @@ void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev) del_timer_sync(&virt_dev->eps[i].stop_cmd_timer); } + xhci_disable_slot(xhci, command, udev->slot_id); + /* + * Event command completion handler will free any data structures + * associated with the slot. XXX Can free sleep? + */ +} + +int xhci_disable_slot(struct xhci_hcd *xhci, struct xhci_command *command, + u32 slot_id) +{ + unsigned long flags; + u32 state; + int ret = 0; + struct xhci_virt_device *virt_dev; + + virt_dev = xhci->devs[slot_id]; + if (!virt_dev) + return -EINVAL; + if (!command) + command = xhci_alloc_command(xhci, false, false, GFP_KERNEL); + if (!command) + return -ENOMEM; + spin_lock_irqsave(&xhci->lock, flags); /* Don't disable the slot if the host controller is dead. */ state = readl(&xhci->op_regs->status); if (state == 0xffffffff || (xhci->xhc_state & XHCI_STATE_DYING) || (xhci->xhc_state & XHCI_STATE_HALTED)) { - xhci_free_virt_device(xhci, udev->slot_id); + xhci_free_virt_device(xhci, slot_id); spin_unlock_irqrestore(&xhci->lock, flags); kfree(command); - return; + return ret; } - if (xhci_queue_slot_control(xhci, command, TRB_DISABLE_SLOT, - udev->slot_id)) { + ret = xhci_queue_slot_control(xhci, command, TRB_DISABLE_SLOT, + slot_id); + if (ret) { spin_unlock_irqrestore(&xhci->lock, flags); xhci_dbg(xhci, "FIXME: allocate a command ring segment\n"); - return; + return ret; } xhci_ring_cmd_db(xhci); spin_unlock_irqrestore(&xhci->lock, flags); - - /* - * Event command completion handler will free any data structures - * associated with the slot. XXX Can free sleep? - */ + return ret; } /* @@ -3650,6 +3622,8 @@ static int xhci_reserve_host_control_ep_resources(struct xhci_hcd *xhci) int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); + struct xhci_virt_device *vdev; + struct xhci_slot_ctx *slot_ctx; unsigned long flags; int ret, slot_id; struct xhci_command *command; @@ -3705,6 +3679,10 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) xhci_warn(xhci, "Could not allocate xHCI USB device data structures\n"); goto disable_slot; } + vdev = xhci->devs[slot_id]; + slot_ctx = xhci_get_slot_ctx(xhci, vdev->out_ctx); + trace_xhci_alloc_dev(slot_ctx); + udev->slot_id = slot_id; #ifndef CONFIG_USB_DEFAULT_PERSIST @@ -3724,15 +3702,10 @@ int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev) disable_slot: /* Disable slot, if we can do it without mem alloc */ - spin_lock_irqsave(&xhci->lock, flags); kfree(command->completion); command->completion = NULL; command->status = 0; - if (!xhci_queue_slot_control(xhci, command, TRB_DISABLE_SLOT, - udev->slot_id)) - xhci_ring_cmd_db(xhci); - spin_unlock_irqrestore(&xhci->lock, flags); - return 0; + return xhci_disable_slot(xhci, command, udev->slot_id); } /* @@ -3779,9 +3752,10 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, ret = -EINVAL; goto out; } + slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); + trace_xhci_setup_device_slot(slot_ctx); if (setup == SETUP_CONTEXT_ONLY) { - slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); if (GET_SLOT_STATE(le32_to_cpu(slot_ctx->dev_state)) == SLOT_STATE_DEFAULT) { xhci_dbg(xhci, "Slot already in default state\n"); @@ -3818,8 +3792,6 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, ctrl_ctx->add_flags = cpu_to_le32(SLOT_FLAG | EP0_FLAG); ctrl_ctx->drop_flags = 0; - xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2); trace_xhci_address_ctx(xhci, virt_dev->in_ctx, le32_to_cpu(slot_ctx->dev_info) >> 27); @@ -3872,8 +3844,6 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, xhci_err(xhci, "ERROR: unexpected setup %s command completion code 0x%x.\n", act, command->status); - xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2); trace_xhci_address_ctx(xhci, virt_dev->out_ctx, 1); ret = -EINVAL; break; @@ -3892,17 +3862,12 @@ static int xhci_setup_device(struct usb_hcd *hcd, struct usb_device *udev, xhci_dbg_trace(xhci, trace_xhci_dbg_address, "Output Context DMA address = %#08llx", (unsigned long long)virt_dev->out_ctx->dma); - xhci_dbg(xhci, "Slot ID %d Input Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->in_ctx, 2); trace_xhci_address_ctx(xhci, virt_dev->in_ctx, le32_to_cpu(slot_ctx->dev_info) >> 27); - xhci_dbg(xhci, "Slot ID %d Output Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, 2); /* * USB core uses address 1 for the roothubs, so we add one to the * address given back to us by the HC. */ - slot_ctx = xhci_get_slot_ctx(xhci, virt_dev->out_ctx); trace_xhci_address_ctx(xhci, virt_dev->out_ctx, le32_to_cpu(slot_ctx->dev_info) >> 27); /* Zero the input context control for later use */ @@ -3921,12 +3886,12 @@ out: return ret; } -int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev) { return xhci_setup_device(hcd, udev, SETUP_CONTEXT_ADDRESS); } -int xhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev) { return xhci_setup_device(hcd, udev, SETUP_CONTEXT_ONLY); } @@ -4003,14 +3968,10 @@ static int __maybe_unused xhci_change_max_exit_latency(struct xhci_hcd *xhci, xhci_dbg_trace(xhci, trace_xhci_dbg_context_change, "Set up evaluate context for LPM MEL change."); - xhci_dbg(xhci, "Slot %u Input Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, command->in_ctx, 0); /* Issue and wait for the evaluate context command. */ ret = xhci_configure_endpoint(xhci, udev, command, true, true); - xhci_dbg(xhci, "Slot %u Output Context:\n", udev->slot_id); - xhci_dbg_ctx(xhci, virt_dev->out_ctx, 0); if (!ret) { spin_lock_irqsave(&xhci->lock, flags); @@ -4083,7 +4044,7 @@ static int xhci_calculate_usb2_hw_lpm_params(struct usb_device *udev) return PORT_BESLD(besld) | PORT_L1_TIMEOUT(l1) | PORT_HIRDM(hirdm); } -int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, +static int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, struct usb_device *udev, int enable) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -4207,7 +4168,7 @@ static int xhci_check_usb2_port_capability(struct xhci_hcd *xhci, int port, return 0; } -int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); int portnum = udev->portnum - 1; @@ -4616,7 +4577,7 @@ static int calculate_max_exit_latency(struct usb_device *udev, } /* Returns the USB3 hub-encoded value for the U1/U2 timeout. */ -int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, +static int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, struct usb_device *udev, enum usb3_link_state state) { struct xhci_hcd *xhci; @@ -4647,7 +4608,7 @@ int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, return hub_encoded_timeout; } -int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, +static int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, struct usb_device *udev, enum usb3_link_state state) { struct xhci_hcd *xhci; @@ -4663,24 +4624,24 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, } #else /* CONFIG_PM */ -int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, +static int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, struct usb_device *udev, int enable) { return 0; } -int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) +static int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev) { return 0; } -int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, +static int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, struct usb_device *udev, enum usb3_link_state state) { return USB3_LPM_DISABLED; } -int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, +static int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, struct usb_device *udev, enum usb3_link_state state) { return 0; @@ -4692,7 +4653,7 @@ int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, /* Once a hub descriptor is fetched for a device, we need to update the xHC's * internal data structures for the device. */ -int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, +static int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, struct usb_tt *tt, gfp_t mem_flags) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); @@ -4713,11 +4674,11 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, xhci_warn(xhci, "Cannot update hub desc for unknown device.\n"); return -EINVAL; } + config_cmd = xhci_alloc_command(xhci, true, true, mem_flags); - if (!config_cmd) { - xhci_dbg(xhci, "Could not allocate xHCI command structure.\n"); + if (!config_cmd) return -ENOMEM; - } + ctrl_ctx = xhci_get_input_control_ctx(config_cmd->in_ctx); if (!ctrl_ctx) { xhci_warn(xhci, "%s: Could not get input context, bad type.\n", @@ -4778,8 +4739,6 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, xhci_dbg(xhci, "Set up %s for hub device.\n", (xhci->hci_version > 0x95) ? "configure endpoint" : "evaluate context"); - xhci_dbg(xhci, "Slot %u Input Context:\n", hdev->slot_id); - xhci_dbg_ctx(xhci, config_cmd->in_ctx, 0); /* Issue and wait for the configure endpoint or * evaluate context command. @@ -4791,14 +4750,11 @@ int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, ret = xhci_configure_endpoint(xhci, hdev, config_cmd, true, false); - xhci_dbg(xhci, "Slot %u Output Context:\n", hdev->slot_id); - xhci_dbg_ctx(xhci, vdev->out_ctx, 0); - xhci_free_command(xhci, config_cmd); return ret; } -int xhci_get_frame(struct usb_hcd *hcd) +static int xhci_get_frame(struct usb_hcd *hcd) { struct xhci_hcd *xhci = hcd_to_xhci(hcd); /* EHCI mods by the periodic size. Why? */ @@ -4808,7 +4764,11 @@ int xhci_get_frame(struct usb_hcd *hcd) int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks) { struct xhci_hcd *xhci; - struct device *dev = hcd->self.controller; + /* + * TODO: Check with DWC3 clients for sysdev according to + * quirks + */ + struct device *dev = hcd->self.sysdev; int retval; /* Accept arbitrarily long scatter-gather lists */ diff --git a/drivers/usb/host/xhci.h b/drivers/usb/host/xhci.h index da3eb695fe54..73a28a986d5e 100644 --- a/drivers/usb/host/xhci.h +++ b/drivers/usb/host/xhci.h @@ -425,6 +425,7 @@ struct xhci_op_regs { #define PORT_L1DS_MASK (0xff << 8) #define PORT_L1DS(p) (((p) & 0xff) << 8) #define PORT_HLE (1 << 16) +#define PORT_TEST_MODE_SHIFT 28 /* USB3 Protocol PORTLI Port Link Information */ #define PORT_RX_LANES(p) (((p) >> 16) & 0xf) @@ -617,6 +618,7 @@ struct xhci_slot_ctx { #define ROUTE_STRING_MASK (0xfffff) /* Device speed - values defined by PORTSC Device Speed field - 20:23 */ #define DEV_SPEED (0xf << 20) +#define GET_DEV_SPEED(n) (((n) & DEV_SPEED) >> 20) /* bit 24 reserved */ /* Is this LS/FS device connected through a HS hub? - bit 25 */ #define DEV_MTT (0x1 << 25) @@ -637,6 +639,7 @@ struct xhci_slot_ctx { #define DEVINFO_TO_ROOT_HUB_PORT(p) (((p) >> 16) & 0xff) /* Maximum number of ports under a hub device */ #define XHCI_MAX_PORTS(p) (((p) & 0xff) << 24) +#define DEVINFO_TO_MAX_PORTS(p) (((p) & (0xff << 24)) >> 24) /* tt_info bitmasks */ /* @@ -651,6 +654,7 @@ struct xhci_slot_ctx { */ #define TT_PORT (0xff << 8) #define TT_THINK_TIME(p) (((p) & 0x3) << 16) +#define GET_TT_THINK_TIME(p) (((p) & (0x3 << 16)) >> 16) /* dev_state bitmasks */ /* USB device address - assigned by the HC */ @@ -1562,10 +1566,8 @@ struct xhci_ring { struct xhci_segment *last_seg; union xhci_trb *enqueue; struct xhci_segment *enq_seg; - unsigned int enq_updates; union xhci_trb *dequeue; struct xhci_segment *deq_seg; - unsigned int deq_updates; struct list_head td_list; /* * Write the cycle state into the TRB cycle field to give ownership of @@ -1604,7 +1606,6 @@ struct xhci_scratchpad { u64 *sp_array; dma_addr_t sp_dma; void **sp_buffers; - dma_addr_t *sp_dma_buffers; }; struct urb_priv { @@ -1722,7 +1723,6 @@ struct xhci_hcd { int page_shift; /* msi-x vectors */ int msix_count; - struct msix_entry *msix_entries; /* optional clock */ struct clk *clk; /* data structures */ @@ -1818,6 +1818,7 @@ struct xhci_hcd { #define XHCI_MISSING_CAS (1 << 24) /* For controller with a broken Port Disable implementation */ #define XHCI_BROKEN_PORT_PED (1 << 25) +#define XHCI_LIMIT_ENDPOINT_INTERVAL_7 (1 << 26) unsigned int num_active_eps; unsigned int limit_active_eps; @@ -1843,6 +1844,7 @@ struct xhci_hcd { /* Compliance Mode Recovery Data */ struct timer_list comp_mode_recovery_timer; u32 port_status_u0; + u16 test_mode; /* Compliance Mode Timer Triggered every 2 seconds */ #define COMP_MODE_RCVRY_MSECS 2000 @@ -1918,19 +1920,10 @@ void xhci_print_ir_set(struct xhci_hcd *xhci, int set_num); void xhci_print_registers(struct xhci_hcd *xhci); void xhci_dbg_regs(struct xhci_hcd *xhci); void xhci_print_run_regs(struct xhci_hcd *xhci); -void xhci_print_trb_offsets(struct xhci_hcd *xhci, union xhci_trb *trb); -void xhci_debug_trb(struct xhci_hcd *xhci, union xhci_trb *trb); -void xhci_debug_segment(struct xhci_hcd *xhci, struct xhci_segment *seg); -void xhci_debug_ring(struct xhci_hcd *xhci, struct xhci_ring *ring); void xhci_dbg_erst(struct xhci_hcd *xhci, struct xhci_erst *erst); void xhci_dbg_cmd_ptrs(struct xhci_hcd *xhci); -void xhci_dbg_ring_ptrs(struct xhci_hcd *xhci, struct xhci_ring *ring); -void xhci_dbg_ctx(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx, unsigned int last_ep); char *xhci_get_slot_state(struct xhci_hcd *xhci, struct xhci_container_ctx *ctx); -void xhci_dbg_ep_rings(struct xhci_hcd *xhci, - unsigned int slot_id, unsigned int ep_index, - struct xhci_virt_ep *ep); void xhci_dbg_trace(struct xhci_hcd *xhci, void (*trace)(struct va_format *), const char *fmt, ...); @@ -1944,16 +1937,8 @@ void xhci_copy_ep0_dequeue_into_input_ctx(struct xhci_hcd *xhci, struct usb_device *udev); unsigned int xhci_get_endpoint_index(struct usb_endpoint_descriptor *desc); unsigned int xhci_get_endpoint_address(unsigned int ep_index); -unsigned int xhci_get_endpoint_flag(struct usb_endpoint_descriptor *desc); -unsigned int xhci_get_endpoint_flag_from_index(unsigned int ep_index); unsigned int xhci_last_valid_endpoint(u32 added_ctxs); void xhci_endpoint_zero(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_host_endpoint *ep); -void xhci_drop_ep_from_interval_table(struct xhci_hcd *xhci, - struct xhci_bw_info *ep_bw, - struct xhci_interval_bw_table *bw_table, - struct usb_device *udev, - struct xhci_virt_ep *virt_ep, - struct xhci_tt_bw_info *tt_info); void xhci_update_tt_active_eps(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, int old_active_eps); @@ -2010,53 +1995,25 @@ typedef void (*xhci_get_quirks_t)(struct device *, struct xhci_hcd *); int xhci_handshake(void __iomem *ptr, u32 mask, u32 done, int usec); void xhci_quiesce(struct xhci_hcd *xhci); int xhci_halt(struct xhci_hcd *xhci); +int xhci_start(struct xhci_hcd *xhci); int xhci_reset(struct xhci_hcd *xhci); -int xhci_init(struct usb_hcd *hcd); int xhci_run(struct usb_hcd *hcd); -void xhci_stop(struct usb_hcd *hcd); -void xhci_shutdown(struct usb_hcd *hcd); int xhci_gen_setup(struct usb_hcd *hcd, xhci_get_quirks_t get_quirks); void xhci_init_driver(struct hc_driver *drv, const struct xhci_driver_overrides *over); +int xhci_disable_slot(struct xhci_hcd *xhci, + struct xhci_command *command, u32 slot_id); -#ifdef CONFIG_PM int xhci_suspend(struct xhci_hcd *xhci, bool do_wakeup); int xhci_resume(struct xhci_hcd *xhci, bool hibernated); -#else -#define xhci_suspend NULL -#define xhci_resume NULL -#endif -int xhci_get_frame(struct usb_hcd *hcd); irqreturn_t xhci_irq(struct usb_hcd *hcd); irqreturn_t xhci_msi_irq(int irq, void *hcd); int xhci_alloc_dev(struct usb_hcd *hcd, struct usb_device *udev); -void xhci_free_dev(struct usb_hcd *hcd, struct usb_device *udev); int xhci_alloc_tt_info(struct xhci_hcd *xhci, struct xhci_virt_device *virt_dev, struct usb_device *hdev, struct usb_tt *tt, gfp_t mem_flags); -int xhci_alloc_streams(struct usb_hcd *hcd, struct usb_device *udev, - struct usb_host_endpoint **eps, unsigned int num_eps, - unsigned int num_streams, gfp_t mem_flags); -int xhci_free_streams(struct usb_hcd *hcd, struct usb_device *udev, - struct usb_host_endpoint **eps, unsigned int num_eps, - gfp_t mem_flags); -int xhci_address_device(struct usb_hcd *hcd, struct usb_device *udev); -int xhci_enable_device(struct usb_hcd *hcd, struct usb_device *udev); -int xhci_update_device(struct usb_hcd *hcd, struct usb_device *udev); -int xhci_set_usb2_hardware_lpm(struct usb_hcd *hcd, - struct usb_device *udev, int enable); -int xhci_update_hub_device(struct usb_hcd *hcd, struct usb_device *hdev, - struct usb_tt *tt, gfp_t mem_flags); -int xhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, gfp_t mem_flags); -int xhci_urb_dequeue(struct usb_hcd *hcd, struct urb *urb, int status); -int xhci_add_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); -int xhci_drop_endpoint(struct usb_hcd *hcd, struct usb_device *udev, struct usb_host_endpoint *ep); -void xhci_endpoint_reset(struct usb_hcd *hcd, struct usb_host_endpoint *ep); -int xhci_discover_or_reset_device(struct usb_hcd *hcd, struct usb_device *udev); -int xhci_check_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); -void xhci_reset_bandwidth(struct usb_hcd *hcd, struct usb_device *udev); /* xHCI ring, segment, TRB, and TD functions */ dma_addr_t xhci_trb_virt_to_dma(struct xhci_segment *seg, union xhci_trb *trb); @@ -2100,9 +2057,6 @@ void xhci_queue_new_dequeue_state(struct xhci_hcd *xhci, struct xhci_dequeue_state *deq_state); void xhci_cleanup_stalled_ring(struct xhci_hcd *xhci, unsigned int ep_index, struct xhci_td *td); -void xhci_queue_config_ep_quirk(struct xhci_hcd *xhci, - unsigned int slot_id, unsigned int ep_index, - struct xhci_dequeue_state *deq_state); void xhci_stop_endpoint_command_watchdog(unsigned long arg); void xhci_handle_command_timeout(struct work_struct *work); @@ -2113,16 +2067,13 @@ void xhci_cleanup_command_queue(struct xhci_hcd *xhci); /* xHCI roothub code */ void xhci_set_link_state(struct xhci_hcd *xhci, __le32 __iomem **port_array, int port_id, u32 link_state); -int xhci_enable_usb3_lpm_timeout(struct usb_hcd *hcd, - struct usb_device *udev, enum usb3_link_state state); -int xhci_disable_usb3_lpm_timeout(struct usb_hcd *hcd, - struct usb_device *udev, enum usb3_link_state state); void xhci_test_and_clear_bit(struct xhci_hcd *xhci, __le32 __iomem **port_array, int port_id, u32 port_bit); int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, u16 wIndex, char *buf, u16 wLength); int xhci_hub_status_data(struct usb_hcd *hcd, char *buf); int xhci_find_raw_port_number(struct usb_hcd *hcd, int port1); +void xhci_hc_died(struct xhci_hcd *xhci); #ifdef CONFIG_PM int xhci_bus_suspend(struct usb_hcd *hcd); @@ -2153,6 +2104,22 @@ static inline struct xhci_ring *xhci_urb_to_transfer_ring(struct xhci_hcd *xhci, urb->stream_id); } +static inline char *xhci_slot_state_string(u32 state) +{ + switch (state) { + case SLOT_STATE_ENABLED: + return "enabled/disabled"; + case SLOT_STATE_DEFAULT: + return "default"; + case SLOT_STATE_ADDRESSED: + return "addressed"; + case SLOT_STATE_CONFIGURED: + return "configured"; + default: + return "reserved"; + } +} + static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, u32 field3) { @@ -2162,14 +2129,12 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, switch (type) { case TRB_LINK: sprintf(str, - "TRB %08x%08x status '%s' len %d slot %d ep %d type '%s' flags %c:%c", - field1, field0, - xhci_trb_comp_code_string(GET_COMP_CODE(field2)), - EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3), - /* Macro decrements 1, maybe it shouldn't?!? */ - TRB_TO_EP_INDEX(field3) + 1, - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), - field3 & EVENT_DATA ? 'E' : 'e', + "LINK %08x%08x intr %d type '%s' flags %c:%c:%c:%c", + field1, field0, GET_INTR_TARGET(field2), + xhci_trb_type_string(type), + field3 & TRB_IOC ? 'I' : 'i', + field3 & TRB_CHAIN ? 'C' : 'c', + field3 & TRB_TC ? 'T' : 't', field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_TRANSFER: @@ -2187,37 +2152,52 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, EVENT_TRB_LEN(field2), TRB_TO_SLOT_ID(field3), /* Macro decrements 1, maybe it shouldn't?!? */ TRB_TO_EP_INDEX(field3) + 1, - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field3 & EVENT_DATA ? 'E' : 'e', field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_SETUP: - sprintf(str, - "bRequestType %02x bRequest %02x wValue %02x%02x wIndex %02x%02x wLength %d length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c:%c:%c:%c:%c", - field0 & 0xff, - (field0 & 0xff00) >> 8, - (field0 & 0xff000000) >> 24, - (field0 & 0xff0000) >> 16, - (field1 & 0xff00) >> 8, - field1 & 0xff, - (field1 & 0xff000000) >> 16 | - (field1 & 0xff0000) >> 16, - TRB_LEN(field2), GET_TD_SIZE(field2), - GET_INTR_TARGET(field2), - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), - field3 & TRB_BEI ? 'B' : 'b', - field3 & TRB_IDT ? 'I' : 'i', - field3 & TRB_IOC ? 'I' : 'i', - field3 & TRB_CHAIN ? 'C' : 'c', - field3 & TRB_NO_SNOOP ? 'S' : 's', - field3 & TRB_ISP ? 'I' : 'i', - field3 & TRB_ENT ? 'E' : 'e', - field3 & TRB_CYCLE ? 'C' : 'c'); + sprintf(str, "bRequestType %02x bRequest %02x wValue %02x%02x wIndex %02x%02x wLength %d length %d TD size %d intr %d type '%s' flags %c:%c:%c", + field0 & 0xff, + (field0 & 0xff00) >> 8, + (field0 & 0xff000000) >> 24, + (field0 & 0xff0000) >> 16, + (field1 & 0xff00) >> 8, + field1 & 0xff, + (field1 & 0xff000000) >> 16 | + (field1 & 0xff0000) >> 16, + TRB_LEN(field2), GET_TD_SIZE(field2), + GET_INTR_TARGET(field2), + xhci_trb_type_string(type), + field3 & TRB_IDT ? 'I' : 'i', + field3 & TRB_IOC ? 'I' : 'i', + field3 & TRB_CYCLE ? 'C' : 'c'); break; - case TRB_NORMAL: case TRB_DATA: + sprintf(str, "Buffer %08x%08x length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c:%c:%c:%c", + field1, field0, TRB_LEN(field2), GET_TD_SIZE(field2), + GET_INTR_TARGET(field2), + xhci_trb_type_string(type), + field3 & TRB_IDT ? 'I' : 'i', + field3 & TRB_IOC ? 'I' : 'i', + field3 & TRB_CHAIN ? 'C' : 'c', + field3 & TRB_NO_SNOOP ? 'S' : 's', + field3 & TRB_ISP ? 'I' : 'i', + field3 & TRB_ENT ? 'E' : 'e', + field3 & TRB_CYCLE ? 'C' : 'c'); + break; case TRB_STATUS: + sprintf(str, "Buffer %08x%08x length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c", + field1, field0, TRB_LEN(field2), GET_TD_SIZE(field2), + GET_INTR_TARGET(field2), + xhci_trb_type_string(type), + field3 & TRB_IOC ? 'I' : 'i', + field3 & TRB_CHAIN ? 'C' : 'c', + field3 & TRB_ENT ? 'E' : 'e', + field3 & TRB_CYCLE ? 'C' : 'c'); + break; + case TRB_NORMAL: case TRB_ISOC: case TRB_EVENT_DATA: case TRB_TR_NOOP: @@ -2225,7 +2205,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, "Buffer %08x%08x length %d TD size %d intr %d type '%s' flags %c:%c:%c:%c:%c:%c:%c:%c", field1, field0, TRB_LEN(field2), GET_TD_SIZE(field2), GET_INTR_TARGET(field2), - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field3 & TRB_BEI ? 'B' : 'b', field3 & TRB_IDT ? 'I' : 'i', field3 & TRB_IOC ? 'I' : 'i', @@ -2240,21 +2220,21 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_ENABLE_SLOT: sprintf(str, "%s: flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_DISABLE_SLOT: case TRB_NEG_BANDWIDTH: sprintf(str, "%s: slot %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), TRB_TO_SLOT_ID(field3), field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_ADDR_DEV: sprintf(str, "%s: ctx %08x%08x slot %d flags %c:%c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_SLOT_ID(field3), field3 & TRB_BSR ? 'B' : 'b', @@ -2263,7 +2243,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_CONFIG_EP: sprintf(str, "%s: ctx %08x%08x slot %d flags %c:%c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_SLOT_ID(field3), field3 & TRB_DC ? 'D' : 'd', @@ -2272,7 +2252,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_EVAL_CONTEXT: sprintf(str, "%s: ctx %08x%08x slot %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_SLOT_ID(field3), field3 & TRB_CYCLE ? 'C' : 'c'); @@ -2280,7 +2260,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_RESET_EP: sprintf(str, "%s: ctx %08x%08x slot %d ep %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_SLOT_ID(field3), /* Macro decrements 1, maybe it shouldn't?!? */ @@ -2290,7 +2270,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_STOP_RING: sprintf(str, "%s: slot %d sp %d ep %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), TRB_TO_SLOT_ID(field3), TRB_TO_SUSPEND_PORT(field3), /* Macro decrements 1, maybe it shouldn't?!? */ @@ -2300,7 +2280,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_SET_DEQ: sprintf(str, "%s: deq %08x%08x stream %d slot %d ep %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_STREAM_ID(field2), TRB_TO_SLOT_ID(field3), @@ -2311,14 +2291,14 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_RESET_DEV: sprintf(str, "%s: slot %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), TRB_TO_SLOT_ID(field3), field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_FORCE_EVENT: sprintf(str, "%s: event %08x%08x vf intr %d vf id %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_VF_INTR_TARGET(field2), TRB_TO_VF_ID(field3), @@ -2327,14 +2307,14 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_SET_LT: sprintf(str, "%s: belt %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), TRB_TO_BELT(field3), field3 & TRB_CYCLE ? 'C' : 'c'); break; case TRB_GET_BW: sprintf(str, "%s: ctx %08x%08x slot %d speed %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field1, field0, TRB_TO_SLOT_ID(field3), TRB_TO_DEV_SPEED(field3), @@ -2343,7 +2323,7 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, case TRB_FORCE_HEADER: sprintf(str, "%s: info %08x%08x%08x pkt type %d roothub port %d flags %c", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field2, field1, field0 & 0xffffffe0, TRB_TO_PACKET_TYPE(field0), TRB_TO_ROOTHUB_PORT(field3), @@ -2352,12 +2332,155 @@ static inline const char *xhci_decode_trb(u32 field0, u32 field1, u32 field2, default: sprintf(str, "type '%s' -> raw %08x %08x %08x %08x", - xhci_trb_type_string(TRB_FIELD_TO_TYPE(field3)), + xhci_trb_type_string(type), field0, field1, field2, field3); } return str; } +static inline const char *xhci_decode_slot_context(u32 info, u32 info2, + u32 tt_info, u32 state) +{ + static char str[1024]; + u32 speed; + u32 hub; + u32 mtt; + int ret = 0; + + speed = info & DEV_SPEED; + hub = info & DEV_HUB; + mtt = info & DEV_MTT; + + ret = sprintf(str, "RS %05x %s%s%s Ctx Entries %d MEL %d us Port# %d/%d", + info & ROUTE_STRING_MASK, + ({ char *s; + switch (speed) { + case SLOT_SPEED_FS: + s = "full-speed"; + break; + case SLOT_SPEED_LS: + s = "low-speed"; + break; + case SLOT_SPEED_HS: + s = "high-speed"; + break; + case SLOT_SPEED_SS: + s = "super-speed"; + break; + case SLOT_SPEED_SSP: + s = "super-speed plus"; + break; + default: + s = "UNKNOWN speed"; + } s; }), + mtt ? " multi-TT" : "", + hub ? " Hub" : "", + (info & LAST_CTX_MASK) >> 27, + info2 & MAX_EXIT, + DEVINFO_TO_ROOT_HUB_PORT(info2), + DEVINFO_TO_MAX_PORTS(info2)); + + ret += sprintf(str + ret, " [TT Slot %d Port# %d TTT %d Intr %d] Addr %d State %s", + tt_info & TT_SLOT, (tt_info & TT_PORT) >> 8, + GET_TT_THINK_TIME(tt_info), GET_INTR_TARGET(tt_info), + state & DEV_ADDR_MASK, + xhci_slot_state_string(GET_SLOT_STATE(state))); + + return str; +} + +static inline const char *xhci_ep_state_string(u8 state) +{ + switch (state) { + case EP_STATE_DISABLED: + return "disabled"; + case EP_STATE_RUNNING: + return "running"; + case EP_STATE_HALTED: + return "halted"; + case EP_STATE_STOPPED: + return "stopped"; + case EP_STATE_ERROR: + return "error"; + default: + return "INVALID"; + } +} + +static inline const char *xhci_ep_type_string(u8 type) +{ + switch (type) { + case ISOC_OUT_EP: + return "Isoc OUT"; + case BULK_OUT_EP: + return "Bulk OUT"; + case INT_OUT_EP: + return "Int OUT"; + case CTRL_EP: + return "Ctrl"; + case ISOC_IN_EP: + return "Isoc IN"; + case BULK_IN_EP: + return "Bulk IN"; + case INT_IN_EP: + return "Int IN"; + default: + return "INVALID"; + } +} + +static inline const char *xhci_decode_ep_context(u32 info, u32 info2, u64 deq, + u32 tx_info) +{ + static char str[1024]; + int ret; + + u32 esit; + u16 maxp; + u16 avg; + + u8 max_pstr; + u8 ep_state; + u8 interval; + u8 ep_type; + u8 burst; + u8 cerr; + u8 mult; + u8 lsa; + u8 hid; + + esit = EP_MAX_ESIT_PAYLOAD_HI(info) << 16 | + EP_MAX_ESIT_PAYLOAD_LO(tx_info); + + ep_state = info & EP_STATE_MASK; + max_pstr = info & EP_MAXPSTREAMS_MASK; + interval = CTX_TO_EP_INTERVAL(info); + mult = CTX_TO_EP_MULT(info) + 1; + lsa = info & EP_HAS_LSA; + + cerr = (info2 & (3 << 1)) >> 1; + ep_type = CTX_TO_EP_TYPE(info2); + hid = info2 & (1 << 7); + burst = CTX_TO_MAX_BURST(info2); + maxp = MAX_PACKET_DECODED(info2); + + avg = EP_AVG_TRB_LENGTH(tx_info); + + ret = sprintf(str, "State %s mult %d max P. Streams %d %s", + xhci_ep_state_string(ep_state), mult, + max_pstr, lsa ? "LSA " : ""); + + ret += sprintf(str + ret, "interval %d us max ESIT payload %d CErr %d ", + (1 << interval) * 125, esit, cerr); + + ret += sprintf(str + ret, "Type %s %sburst %d maxp %d deq %016llx ", + xhci_ep_type_string(ep_type), hid ? "HID" : "", + burst, maxp, deq); + + ret += sprintf(str + ret, "avg trb len %d", avg); + + return str; +} #endif /* __LINUX_XHCI_HCD_H */ diff --git a/drivers/usb/isp1760/isp1760-if.c b/drivers/usb/isp1760/isp1760-if.c index 79205b31e4a9..bc68bbab7fa1 100644 --- a/drivers/usb/isp1760/isp1760-if.c +++ b/drivers/usb/isp1760/isp1760-if.c @@ -21,11 +21,11 @@ #include "isp1760-core.h" #include "isp1760-regs.h" -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI #include <linux/pci.h> #endif -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI static int isp1761_pci_init(struct pci_dev *dev) { resource_size_t mem_start; @@ -286,7 +286,7 @@ static int __init isp1760_init(void) ret = platform_driver_register(&isp1760_plat_driver); if (!ret) any_ret = 0; -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI ret = pci_register_driver(&isp1761_pci_driver); if (!ret) any_ret = 0; @@ -301,7 +301,7 @@ module_init(isp1760_init); static void __exit isp1760_exit(void) { platform_driver_unregister(&isp1760_plat_driver); -#ifdef CONFIG_PCI +#ifdef CONFIG_USB_PCI pci_unregister_driver(&isp1761_pci_driver); #endif isp1760_deinit_kmem_cache(); diff --git a/drivers/usb/misc/adutux.c b/drivers/usb/misc/adutux.c index db9a9e6ff6be..dfd54ea4808f 100644 --- a/drivers/usb/misc/adutux.c +++ b/drivers/usb/misc/adutux.c @@ -655,24 +655,15 @@ static int adu_probe(struct usb_interface *interface, { struct usb_device *udev = interface_to_usbdev(interface); struct adu_device *dev = NULL; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - int retval = -ENODEV; + int retval = -ENOMEM; int in_end_size; int out_end_size; - int i; - - if (udev == NULL) { - dev_err(&interface->dev, "udev is NULL.\n"); - goto exit; - } + int res; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(struct adu_device), GFP_KERNEL); - if (!dev) { - retval = -ENOMEM; - goto exit; - } + if (!dev) + return -ENOMEM; mutex_init(&dev->mtx); spin_lock_init(&dev->buflock); @@ -680,24 +671,13 @@ static int adu_probe(struct usb_interface *interface, init_waitqueue_head(&dev->read_wait); init_waitqueue_head(&dev->write_wait); - iface_desc = &interface->altsetting[0]; - - /* set up the endpoint information */ - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_int_in(endpoint)) - dev->interrupt_in_endpoint = endpoint; - - if (usb_endpoint_is_int_out(endpoint)) - dev->interrupt_out_endpoint = endpoint; - } - if (dev->interrupt_in_endpoint == NULL) { - dev_err(&interface->dev, "interrupt in endpoint not found\n"); - goto error; - } - if (dev->interrupt_out_endpoint == NULL) { - dev_err(&interface->dev, "interrupt out endpoint not found\n"); + res = usb_find_common_endpoints_reverse(&interface->altsetting[0], + NULL, NULL, + &dev->interrupt_in_endpoint, + &dev->interrupt_out_endpoint); + if (res) { + dev_err(&interface->dev, "interrupt endpoints not found\n"); + retval = res; goto error; } @@ -705,10 +685,8 @@ static int adu_probe(struct usb_interface *interface, out_end_size = usb_endpoint_maxp(dev->interrupt_out_endpoint); dev->read_buffer_primary = kmalloc((4 * in_end_size), GFP_KERNEL); - if (!dev->read_buffer_primary) { - retval = -ENOMEM; + if (!dev->read_buffer_primary) goto error; - } /* debug code prime the buffer */ memset(dev->read_buffer_primary, 'a', in_end_size); @@ -717,10 +695,8 @@ static int adu_probe(struct usb_interface *interface, memset(dev->read_buffer_primary + (3 * in_end_size), 'd', in_end_size); dev->read_buffer_secondary = kmalloc((4 * in_end_size), GFP_KERNEL); - if (!dev->read_buffer_secondary) { - retval = -ENOMEM; + if (!dev->read_buffer_secondary) goto error; - } /* debug code prime the buffer */ memset(dev->read_buffer_secondary, 'e', in_end_size); @@ -748,6 +724,7 @@ static int adu_probe(struct usb_interface *interface, if (!usb_string(udev, udev->descriptor.iSerialNumber, dev->serial_number, sizeof(dev->serial_number))) { dev_err(&interface->dev, "Could not retrieve serial number\n"); + retval = -EIO; goto error; } dev_dbg(&interface->dev,"serial_number=%s", dev->serial_number); @@ -770,8 +747,8 @@ static int adu_probe(struct usb_interface *interface, dev_info(&interface->dev, "ADU%d %s now attached to /dev/usb/adutux%d\n", le16_to_cpu(udev->descriptor.idProduct), dev->serial_number, (dev->minor - ADU_MINOR_BASE)); -exit: - return retval; + + return 0; error: adu_delete(dev); diff --git a/drivers/usb/misc/appledisplay.c b/drivers/usb/misc/appledisplay.c index da5ff401a354..8efdc500e790 100644 --- a/drivers/usb/misc/appledisplay.c +++ b/drivers/usb/misc/appledisplay.c @@ -212,28 +212,21 @@ static int appledisplay_probe(struct usb_interface *iface, struct backlight_properties props; struct appledisplay *pdata; struct usb_device *udev = interface_to_usbdev(iface); - struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int int_in_endpointAddr = 0; - int i, retval = -ENOMEM, brightness; + int retval, brightness; char bl_name[20]; /* set up the endpoint information */ /* use only the first interrupt-in endpoint */ - iface_desc = iface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - if (!int_in_endpointAddr && usb_endpoint_is_int_in(endpoint)) { - /* we found an interrupt in endpoint */ - int_in_endpointAddr = endpoint->bEndpointAddress; - break; - } - } - if (!int_in_endpointAddr) { + retval = usb_find_int_in_endpoint(iface->cur_altsetting, &endpoint); + if (retval) { dev_err(&iface->dev, "Could not find int-in endpoint\n"); - return -EIO; + return retval; } + int_in_endpointAddr = endpoint->bEndpointAddress; + /* allocate memory for our device state and initialize it */ pdata = kzalloc(sizeof(struct appledisplay), GFP_KERNEL); if (!pdata) { diff --git a/drivers/usb/misc/chaoskey.c b/drivers/usb/misc/chaoskey.c index aa350dc9eb25..e9cae4d82af2 100644 --- a/drivers/usb/misc/chaoskey.c +++ b/drivers/usb/misc/chaoskey.c @@ -117,28 +117,26 @@ static int chaoskey_probe(struct usb_interface *interface, { struct usb_device *udev = interface_to_usbdev(interface); struct usb_host_interface *altsetting = interface->cur_altsetting; - int i; - int in_ep = -1; + struct usb_endpoint_descriptor *epd; + int in_ep; struct chaoskey *dev; int result = -ENOMEM; int size; + int res; usb_dbg(interface, "probe %s-%s", udev->product, udev->serial); /* Find the first bulk IN endpoint and its packet size */ - for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { - if (usb_endpoint_is_bulk_in(&altsetting->endpoint[i].desc)) { - in_ep = usb_endpoint_num(&altsetting->endpoint[i].desc); - size = usb_endpoint_maxp(&altsetting->endpoint[i].desc); - break; - } + res = usb_find_bulk_in_endpoint(altsetting, &epd); + if (res) { + usb_dbg(interface, "no IN endpoint found"); + return res; } + in_ep = usb_endpoint_num(epd); + size = usb_endpoint_maxp(epd); + /* Validate endpoint and size */ - if (in_ep == -1) { - usb_dbg(interface, "no IN endpoint found"); - return -ENODEV; - } if (size <= 0) { usb_dbg(interface, "invalid size (%d)", size); return -ENODEV; diff --git a/drivers/usb/misc/ftdi-elan.c b/drivers/usb/misc/ftdi-elan.c index 01a9373b7e18..8291499d0581 100644 --- a/drivers/usb/misc/ftdi-elan.c +++ b/drivers/usb/misc/ftdi-elan.c @@ -2700,10 +2700,8 @@ static int ftdi_elan_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - size_t buffer_size; - int i; - int retval = -ENOMEM; + struct usb_endpoint_descriptor *bulk_in, *bulk_out; + int retval; struct usb_ftdi *ftdi; ftdi = kzalloc(sizeof(struct usb_ftdi), GFP_KERNEL); @@ -2720,31 +2718,25 @@ static int ftdi_elan_probe(struct usb_interface *interface, ftdi->interface = interface; mutex_init(&ftdi->u132_lock); ftdi->expected = 4; + iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - if (!ftdi->bulk_in_endpointAddr && - usb_endpoint_is_bulk_in(endpoint)) { - buffer_size = usb_endpoint_maxp(endpoint); - ftdi->bulk_in_size = buffer_size; - ftdi->bulk_in_endpointAddr = endpoint->bEndpointAddress; - ftdi->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!ftdi->bulk_in_buffer) { - retval = -ENOMEM; - goto error; - } - } - if (!ftdi->bulk_out_endpointAddr && - usb_endpoint_is_bulk_out(endpoint)) { - ftdi->bulk_out_endpointAddr = - endpoint->bEndpointAddress; - } - } - if (!(ftdi->bulk_in_endpointAddr && ftdi->bulk_out_endpointAddr)) { + retval = usb_find_common_endpoints(iface_desc, + &bulk_in, &bulk_out, NULL, NULL); + if (retval) { dev_err(&ftdi->udev->dev, "Could not find both bulk-in and bulk-out endpoints\n"); - retval = -ENODEV; goto error; } + + ftdi->bulk_in_size = usb_endpoint_maxp(bulk_in); + ftdi->bulk_in_endpointAddr = bulk_in->bEndpointAddress; + ftdi->bulk_in_buffer = kmalloc(ftdi->bulk_in_size, GFP_KERNEL); + if (!ftdi->bulk_in_buffer) { + retval = -ENOMEM; + goto error; + } + + ftdi->bulk_out_endpointAddr = bulk_out->bEndpointAddress; + dev_info(&ftdi->udev->dev, "interface %d has I=%02X O=%02X\n", iface_desc->desc.bInterfaceNumber, ftdi->bulk_in_endpointAddr, ftdi->bulk_out_endpointAddr); diff --git a/drivers/usb/misc/idmouse.c b/drivers/usb/misc/idmouse.c index 502bfe30a077..81fcbf024c65 100644 --- a/drivers/usb/misc/idmouse.c +++ b/drivers/usb/misc/idmouse.c @@ -360,26 +360,22 @@ static int idmouse_probe(struct usb_interface *interface, dev->interface = interface; /* set up the endpoint information - use only the first bulk-in endpoint */ - endpoint = &iface_desc->endpoint[0].desc; - if (!dev->bulk_in_endpointAddr && usb_endpoint_is_bulk_in(endpoint)) { - /* we found a bulk in endpoint */ - dev->orig_bi_size = usb_endpoint_maxp(endpoint); - dev->bulk_in_size = 0x200; /* works _much_ faster */ - dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; - dev->bulk_in_buffer = - kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL); - - if (!dev->bulk_in_buffer) { - idmouse_delete(dev); - return -ENOMEM; - } + result = usb_find_bulk_in_endpoint(iface_desc, &endpoint); + if (result) { + dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n"); + idmouse_delete(dev); + return result; } - if (!(dev->bulk_in_endpointAddr)) { - dev_err(&interface->dev, "Unable to find bulk-in endpoint.\n"); + dev->orig_bi_size = usb_endpoint_maxp(endpoint); + dev->bulk_in_size = 0x200; /* works _much_ faster */ + dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; + dev->bulk_in_buffer = kmalloc(IMGSIZE + dev->bulk_in_size, GFP_KERNEL); + if (!dev->bulk_in_buffer) { idmouse_delete(dev); - return -ENODEV; + return -ENOMEM; } + /* allow device read, write and ioctl */ dev->present = 1; diff --git a/drivers/usb/misc/iowarrior.c b/drivers/usb/misc/iowarrior.c index 37c63cb39714..77569531b78a 100644 --- a/drivers/usb/misc/iowarrior.c +++ b/drivers/usb/misc/iowarrior.c @@ -756,9 +756,8 @@ static int iowarrior_probe(struct usb_interface *interface, struct usb_device *udev = interface_to_usbdev(interface); struct iowarrior *dev = NULL; struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - int i; int retval = -ENOMEM; + int res; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(struct iowarrior), GFP_KERNEL); @@ -781,27 +780,19 @@ static int iowarrior_probe(struct usb_interface *interface, iface_desc = interface->cur_altsetting; dev->product_id = le16_to_cpu(udev->descriptor.idProduct); - /* set up the endpoint information */ - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_int_in(endpoint)) - dev->int_in_endpoint = endpoint; - if (usb_endpoint_is_int_out(endpoint)) - /* this one will match for the IOWarrior56 only */ - dev->int_out_endpoint = endpoint; - } - - if (!dev->int_in_endpoint) { + res = usb_find_last_int_in_endpoint(iface_desc, &dev->int_in_endpoint); + if (res) { dev_err(&interface->dev, "no interrupt-in endpoint found\n"); - retval = -ENODEV; + retval = res; goto error; } if (dev->product_id == USB_DEVICE_ID_CODEMERCS_IOW56) { - if (!dev->int_out_endpoint) { + res = usb_find_last_int_out_endpoint(iface_desc, + &dev->int_out_endpoint); + if (res) { dev_err(&interface->dev, "no interrupt-out endpoint found\n"); - retval = -ENODEV; + retval = res; goto error; } } diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index 3bc5356832db..9d9487c66f87 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -122,13 +122,13 @@ MODULE_SUPPORTED_DEVICE("LD USB Devices"); * avoid racing conditions and get better performance of the driver. */ static int ring_buffer_size = 128; -module_param(ring_buffer_size, int, 0); +module_param(ring_buffer_size, int, 0000); MODULE_PARM_DESC(ring_buffer_size, "Read ring buffer size in reports"); /* The write_buffer can contain more than one interrupt out transfer. */ static int write_buffer_size = 10; -module_param(write_buffer_size, int, 0); +module_param(write_buffer_size, int, 0000); MODULE_PARM_DESC(write_buffer_size, "Write buffer size in reports"); /* As of kernel version 2.6.4 ehci-hcd uses an @@ -141,30 +141,30 @@ MODULE_PARM_DESC(write_buffer_size, "Write buffer size in reports"); * or set to 1 to use the standard interval from the endpoint descriptors. */ static int min_interrupt_in_interval = 2; -module_param(min_interrupt_in_interval, int, 0); +module_param(min_interrupt_in_interval, int, 0000); MODULE_PARM_DESC(min_interrupt_in_interval, "Minimum interrupt in interval in ms"); static int min_interrupt_out_interval = 2; -module_param(min_interrupt_out_interval, int, 0); +module_param(min_interrupt_out_interval, int, 0000); MODULE_PARM_DESC(min_interrupt_out_interval, "Minimum interrupt out interval in ms"); /* Structure to hold all of our device specific stuff */ struct ld_usb { struct mutex mutex; /* locks this structure */ - struct usb_interface* intf; /* save off the usb interface pointer */ + struct usb_interface *intf; /* save off the usb interface pointer */ int open_count; /* number of times this port has been opened */ - char* ring_buffer; + char *ring_buffer; unsigned int ring_head; unsigned int ring_tail; wait_queue_head_t read_wait; wait_queue_head_t write_wait; - char* interrupt_in_buffer; - struct usb_endpoint_descriptor* interrupt_in_endpoint; - struct urb* interrupt_in_urb; + char *interrupt_in_buffer; + struct usb_endpoint_descriptor *interrupt_in_endpoint; + struct urb *interrupt_in_urb; int interrupt_in_interval; size_t interrupt_in_endpoint_size; int interrupt_in_running; @@ -172,9 +172,9 @@ struct ld_usb { int buffer_overflow; spinlock_t rbsl; - char* interrupt_out_buffer; - struct usb_endpoint_descriptor* interrupt_out_endpoint; - struct urb* interrupt_out_urb; + char *interrupt_out_buffer; + struct usb_endpoint_descriptor *interrupt_out_endpoint; + struct urb *interrupt_out_urb; int interrupt_out_interval; size_t interrupt_out_endpoint_size; int interrupt_out_busy; @@ -244,7 +244,7 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) if (urb->actual_length > 0) { next_ring_head = (dev->ring_head+1) % ring_buffer_size; if (next_ring_head != dev->ring_tail) { - actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_head*(sizeof(size_t)+dev->interrupt_in_endpoint_size)); + actual_buffer = (size_t *)(dev->ring_buffer + dev->ring_head * (sizeof(size_t)+dev->interrupt_in_endpoint_size)); /* actual_buffer gets urb->actual_length + interrupt_in_buffer */ *actual_buffer = urb->actual_length; memcpy(actual_buffer+1, dev->interrupt_in_buffer, urb->actual_length); @@ -483,7 +483,7 @@ static ssize_t ld_usb_read(struct file *file, char __user *buffer, size_t count, } /* actual_buffer contains actual_length + interrupt_in_buffer */ - actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_tail*(sizeof(size_t)+dev->interrupt_in_endpoint_size)); + actual_buffer = (size_t *)(dev->ring_buffer + dev->ring_tail * (sizeof(size_t)+dev->interrupt_in_endpoint_size)); bytes_to_read = min(count, *actual_buffer); if (bytes_to_read < *actual_buffer) dev_warn(&dev->intf->dev, "Read buffer overflow, %zd bytes dropped\n", @@ -561,7 +561,7 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer, /* write the data into interrupt_out_buffer from userspace */ bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size); if (bytes_to_write < count) - dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write); + dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n", count-bytes_to_write); dev_dbg(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", __func__, count, bytes_to_write); @@ -650,10 +650,9 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * struct usb_device *udev = interface_to_usbdev(intf); struct ld_usb *dev = NULL; struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; char *buffer; - int i; int retval = -ENOMEM; + int res; /* allocate memory for our device state and initialize it */ @@ -681,21 +680,17 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * iface_desc = intf->cur_altsetting; - /* set up the endpoint information */ - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_int_in(endpoint)) - dev->interrupt_in_endpoint = endpoint; - - if (usb_endpoint_is_int_out(endpoint)) - dev->interrupt_out_endpoint = endpoint; - } - if (dev->interrupt_in_endpoint == NULL) { + res = usb_find_last_int_in_endpoint(iface_desc, + &dev->interrupt_in_endpoint); + if (res) { dev_err(&intf->dev, "Interrupt in endpoint not found\n"); + retval = res; goto error; } - if (dev->interrupt_out_endpoint == NULL) + + res = usb_find_last_int_out_endpoint(iface_desc, + &dev->interrupt_out_endpoint); + if (res) dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n"); dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); diff --git a/drivers/usb/misc/legousbtower.c b/drivers/usb/misc/legousbtower.c index 322a042d6e59..aa3c280fdf8d 100644 --- a/drivers/usb/misc/legousbtower.c +++ b/drivers/usb/misc/legousbtower.c @@ -317,9 +317,16 @@ static int tower_open (struct inode *inode, struct file *file) int subminor; int retval = 0; struct usb_interface *interface; - struct tower_reset_reply reset_reply; + struct tower_reset_reply *reset_reply; int result; + reset_reply = kmalloc(sizeof(*reset_reply), GFP_KERNEL); + + if (!reset_reply) { + retval = -ENOMEM; + goto exit; + } + nonseekable_open(inode, file); subminor = iminor(inode); @@ -364,8 +371,8 @@ static int tower_open (struct inode *inode, struct file *file) USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, 0, 0, - &reset_reply, - sizeof(reset_reply), + reset_reply, + sizeof(*reset_reply), 1000); if (result < 0) { dev_err(&dev->udev->dev, @@ -406,6 +413,7 @@ unlock_exit: mutex_unlock(&dev->lock); exit: + kfree(reset_reply); return retval; } @@ -806,10 +814,7 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device struct device *idev = &interface->dev; struct usb_device *udev = interface_to_usbdev(interface); struct lego_usb_tower *dev = NULL; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor* endpoint; - struct tower_get_version_reply get_version_reply; - int i; + struct tower_get_version_reply *get_version_reply = NULL; int retval = -ENOMEM; int result; @@ -846,25 +851,13 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device dev->interrupt_out_urb = NULL; dev->interrupt_out_busy = 0; - iface_desc = interface->cur_altsetting; - - /* set up the endpoint information */ - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_xfer_int(endpoint)) { - if (usb_endpoint_dir_in(endpoint)) - dev->interrupt_in_endpoint = endpoint; - else - dev->interrupt_out_endpoint = endpoint; - } - } - if(dev->interrupt_in_endpoint == NULL) { - dev_err(idev, "interrupt in endpoint not found\n"); - goto error; - } - if (dev->interrupt_out_endpoint == NULL) { - dev_err(idev, "interrupt out endpoint not found\n"); + result = usb_find_common_endpoints_reverse(interface->cur_altsetting, + NULL, NULL, + &dev->interrupt_in_endpoint, + &dev->interrupt_out_endpoint); + if (result) { + dev_err(idev, "interrupt endpoints not found\n"); + retval = result; goto error; } @@ -886,6 +879,13 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device dev->interrupt_in_interval = interrupt_in_interval ? interrupt_in_interval : dev->interrupt_in_endpoint->bInterval; dev->interrupt_out_interval = interrupt_out_interval ? interrupt_out_interval : dev->interrupt_out_endpoint->bInterval; + get_version_reply = kmalloc(sizeof(*get_version_reply), GFP_KERNEL); + + if (!get_version_reply) { + retval = -ENOMEM; + goto error; + } + /* get the firmware version and log it */ result = usb_control_msg (udev, usb_rcvctrlpipe(udev, 0), @@ -893,18 +893,19 @@ static int tower_probe (struct usb_interface *interface, const struct usb_device USB_TYPE_VENDOR | USB_DIR_IN | USB_RECIP_DEVICE, 0, 0, - &get_version_reply, - sizeof(get_version_reply), + get_version_reply, + sizeof(*get_version_reply), 1000); if (result < 0) { dev_err(idev, "LEGO USB Tower get version control request failed\n"); retval = result; goto error; } - dev_info(&interface->dev, "LEGO USB Tower firmware version is %d.%d " - "build %d\n", get_version_reply.major, - get_version_reply.minor, - le16_to_cpu(get_version_reply.build_no)); + dev_info(&interface->dev, + "LEGO USB Tower firmware version is %d.%d build %d\n", + get_version_reply->major, + get_version_reply->minor, + le16_to_cpu(get_version_reply->build_no)); /* we can register the device now, as it is ready */ usb_set_intfdata (interface, dev); @@ -928,6 +929,7 @@ exit: return retval; error: + kfree(get_version_reply); tower_delete(dev); return retval; } diff --git a/drivers/usb/misc/lvstest.c b/drivers/usb/misc/lvstest.c index d3d124753266..2142132a1f82 100644 --- a/drivers/usb/misc/lvstest.c +++ b/drivers/usb/misc/lvstest.c @@ -193,7 +193,7 @@ static ssize_t u2_timeout_store(struct device *dev, return ret; } - if (val < 0 || val > 127) + if (val > 127) return -EINVAL; ret = lvs_rh_set_port_feature(hdev, lvs->portnum | (val << 8), @@ -222,7 +222,7 @@ static ssize_t u1_timeout_store(struct device *dev, return ret; } - if (val < 0 || val > 127) + if (val > 127) return -EINVAL; ret = lvs_rh_set_port_feature(hdev, lvs->portnum | (val << 8), @@ -367,10 +367,9 @@ static int lvs_rh_probe(struct usb_interface *intf, hdev = interface_to_usbdev(intf); desc = intf->cur_altsetting; - if (desc->desc.bNumEndpoints < 1) - return -ENODEV; - - endpoint = &desc->endpoint[0].desc; + ret = usb_find_int_in_endpoint(desc, &endpoint); + if (ret) + return ret; /* valid only for SS root hub */ if (hdev->descriptor.bDeviceProtocol != USB_HUB_PR_SS || hdev->parent) { @@ -433,6 +432,7 @@ static void lvs_rh_disconnect(struct usb_interface *intf) struct lvs_rh *lvs = usb_get_intfdata(intf); sysfs_remove_group(&intf->dev.kobj, &lvs_attr_group); + usb_poison_urb(lvs->urb); /* used in scheduled work */ flush_work(&lvs->rh_work); usb_free_urb(lvs->urb); } diff --git a/drivers/usb/misc/sisusbvga/sisusb_con.c b/drivers/usb/misc/sisusbvga/sisusb_con.c index 4b5777ec1501..3c6948af726a 100644 --- a/drivers/usb/misc/sisusbvga/sisusb_con.c +++ b/drivers/usb/misc/sisusbvga/sisusb_con.c @@ -816,7 +816,7 @@ sisusbcon_scroll_area(struct vc_data *c, struct sisusb_usb_data *sisusb, mutex_unlock(&sisusb->lock); - return 1; + return true; } /* Interface routine */ diff --git a/drivers/usb/misc/usblcd.c b/drivers/usb/misc/usblcd.c index 9f48419abc46..0f5ad896c7e3 100644 --- a/drivers/usb/misc/usblcd.c +++ b/drivers/usb/misc/usblcd.c @@ -313,16 +313,15 @@ static int lcd_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_lcd *dev = NULL; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - size_t buffer_size; + struct usb_endpoint_descriptor *bulk_in, *bulk_out; int i; - int retval = -ENOMEM; + int retval; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) - goto error; + return -ENOMEM; + kref_init(&dev->kref); sema_init(&dev->limit_sem, USB_LCD_CONCURRENT_WRITES); init_usb_anchor(&dev->submitted); @@ -338,33 +337,24 @@ static int lcd_probe(struct usb_interface *interface, /* set up the endpoint information */ /* use only the first bulk-in and bulk-out endpoints */ - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (!dev->bulk_in_endpointAddr && - usb_endpoint_is_bulk_in(endpoint)) { - /* we found a bulk in endpoint */ - buffer_size = usb_endpoint_maxp(endpoint); - dev->bulk_in_size = buffer_size; - dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; - dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!dev->bulk_in_buffer) - goto error; - } - - if (!dev->bulk_out_endpointAddr && - usb_endpoint_is_bulk_out(endpoint)) { - /* we found a bulk out endpoint */ - dev->bulk_out_endpointAddr = endpoint->bEndpointAddress; - } - } - if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) { + retval = usb_find_common_endpoints(interface->cur_altsetting, + &bulk_in, &bulk_out, NULL, NULL); + if (retval) { dev_err(&interface->dev, "Could not find both bulk-in and bulk-out endpoints\n"); goto error; } + dev->bulk_in_size = usb_endpoint_maxp(bulk_in); + dev->bulk_in_endpointAddr = bulk_in->bEndpointAddress; + dev->bulk_in_buffer = kmalloc(dev->bulk_in_size, GFP_KERNEL); + if (!dev->bulk_in_buffer) { + retval = -ENOMEM; + goto error; + } + + dev->bulk_out_endpointAddr = bulk_out->bEndpointAddress; + /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); @@ -390,8 +380,7 @@ static int lcd_probe(struct usb_interface *interface, return 0; error: - if (dev) - kref_put(&dev->kref, lcd_delete); + kref_put(&dev->kref, lcd_delete); return retval; } diff --git a/drivers/usb/misc/usbtest.c b/drivers/usb/misc/usbtest.c index 17c081068257..eee82ca55b7b 100644 --- a/drivers/usb/misc/usbtest.c +++ b/drivers/usb/misc/usbtest.c @@ -124,6 +124,20 @@ static struct usb_device *testdev_to_usbdev(struct usbtest_dev *test) /*-------------------------------------------------------------------------*/ +static inline void endpoint_update(int edi, + struct usb_host_endpoint **in, + struct usb_host_endpoint **out, + struct usb_host_endpoint *e) +{ + if (edi) { + if (!*in) + *in = e; + } else { + if (!*out) + *out = e; + } +} + static int get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) { @@ -151,46 +165,26 @@ get_endpoints(struct usbtest_dev *dev, struct usb_interface *intf) */ for (ep = 0; ep < alt->desc.bNumEndpoints; ep++) { struct usb_host_endpoint *e; + int edi; e = alt->endpoint + ep; + edi = usb_endpoint_dir_in(&e->desc); + switch (usb_endpoint_type(&e->desc)) { case USB_ENDPOINT_XFER_BULK: - break; + endpoint_update(edi, &in, &out, e); + continue; case USB_ENDPOINT_XFER_INT: if (dev->info->intr) - goto try_intr; + endpoint_update(edi, &int_in, &int_out, e); + continue; case USB_ENDPOINT_XFER_ISOC: if (dev->info->iso) - goto try_iso; + endpoint_update(edi, &iso_in, &iso_out, e); /* FALLTHROUGH */ default: continue; } - if (usb_endpoint_dir_in(&e->desc)) { - if (!in) - in = e; - } else { - if (!out) - out = e; - } - continue; -try_intr: - if (usb_endpoint_dir_in(&e->desc)) { - if (!int_in) - int_in = e; - } else { - if (!int_out) - int_out = e; - } - continue; -try_iso: - if (usb_endpoint_dir_in(&e->desc)) { - if (!iso_in) - iso_in = e; - } else { - if (!iso_out) - iso_out = e; - } } if ((in && out) || iso_in || iso_out || int_in || int_out) goto found; diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c index 07014cad6dbe..5947373700a1 100644 --- a/drivers/usb/misc/uss720.c +++ b/drivers/usb/misc/uss720.c @@ -689,7 +689,7 @@ static int uss720_probe(struct usb_interface *intf, { struct usb_device *usbdev = usb_get_dev(interface_to_usbdev(intf)); struct usb_host_interface *interface; - struct usb_host_endpoint *endpoint; + struct usb_endpoint_descriptor *epd; struct parport_uss720_private *priv; struct parport *pp; unsigned char reg; @@ -745,9 +745,11 @@ static int uss720_probe(struct usb_interface *intf, get_1284_register(pp, 0, ®, GFP_KERNEL); dev_dbg(&intf->dev, "reg: %7ph\n", priv->reg); - endpoint = &interface->endpoint[2]; - dev_dbg(&intf->dev, "epaddr %d interval %d\n", - endpoint->desc.bEndpointAddress, endpoint->desc.bInterval); + i = usb_find_last_int_in_endpoint(interface, &epd); + if (!i) { + dev_dbg(&intf->dev, "epaddr %d interval %d\n", + epd->bEndpointAddress, epd->bInterval); + } parport_announce_port(pp); usb_set_intfdata(intf, pp); diff --git a/drivers/usb/misc/yurex.c b/drivers/usb/misc/yurex.c index 54e53ac4c08f..58abdf28620a 100644 --- a/drivers/usb/misc/yurex.c +++ b/drivers/usb/misc/yurex.c @@ -195,8 +195,8 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; int retval = -ENOMEM; - int i; DEFINE_WAIT(wait); + int res; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); @@ -212,20 +212,14 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_ /* set up the endpoint information */ iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_int_in(endpoint)) { - dev->int_in_endpointAddr = endpoint->bEndpointAddress; - break; - } - } - if (!dev->int_in_endpointAddr) { - retval = -ENODEV; + res = usb_find_int_in_endpoint(iface_desc, &endpoint); + if (res) { dev_err(&interface->dev, "Could not find endpoints\n"); + retval = res; goto error; } + dev->int_in_endpointAddr = endpoint->bEndpointAddress; /* allocate control URB */ dev->cntl_urb = usb_alloc_urb(0, GFP_KERNEL); diff --git a/drivers/usb/mtu3/mtu3_dr.c b/drivers/usb/mtu3/mtu3_dr.c index 1a8987e7c5b0..11a0d3b84c5e 100644 --- a/drivers/usb/mtu3/mtu3_dr.c +++ b/drivers/usb/mtu3/mtu3_dr.c @@ -223,25 +223,25 @@ static int ssusb_extcon_register(struct otg_switch_mtk *otg_sx) return 0; otg_sx->vbus_nb.notifier_call = ssusb_vbus_notifier; - ret = extcon_register_notifier(edev, EXTCON_USB, + ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB, &otg_sx->vbus_nb); if (ret < 0) dev_err(ssusb->dev, "failed to register notifier for USB\n"); otg_sx->id_nb.notifier_call = ssusb_id_notifier; - ret = extcon_register_notifier(edev, EXTCON_USB_HOST, + ret = devm_extcon_register_notifier(ssusb->dev, edev, EXTCON_USB_HOST, &otg_sx->id_nb); if (ret < 0) dev_err(ssusb->dev, "failed to register notifier for USB-HOST\n"); dev_dbg(ssusb->dev, "EXTCON_USB: %d, EXTCON_USB_HOST: %d\n", - extcon_get_cable_state_(edev, EXTCON_USB), - extcon_get_cable_state_(edev, EXTCON_USB_HOST)); + extcon_get_state(edev, EXTCON_USB), + extcon_get_state(edev, EXTCON_USB_HOST)); /* default as host, switch to device mode if needed */ - if (extcon_get_cable_state_(edev, EXTCON_USB_HOST) == false) + if (extcon_get_state(edev, EXTCON_USB_HOST) == false) ssusb_set_mailbox(otg_sx, MTU3_ID_FLOAT); - if (extcon_get_cable_state_(edev, EXTCON_USB) == true) + if (extcon_get_state(edev, EXTCON_USB) == true) ssusb_set_mailbox(otg_sx, MTU3_VBUS_VALID); return 0; @@ -367,13 +367,6 @@ void ssusb_otg_switch_exit(struct ssusb_mtk *ssusb) cancel_delayed_work(&otg_sx->extcon_reg_dwork); - if (otg_sx->edev) { - extcon_unregister_notifier(otg_sx->edev, - EXTCON_USB, &otg_sx->vbus_nb); - extcon_unregister_notifier(otg_sx->edev, - EXTCON_USB_HOST, &otg_sx->id_nb); - } - if (otg_sx->manual_drd_enabled) ssusb_debugfs_exit(ssusb); } diff --git a/drivers/usb/musb/Kconfig b/drivers/usb/musb/Kconfig index 72a2a5040848..5506a9c03c1f 100644 --- a/drivers/usb/musb/Kconfig +++ b/drivers/usb/musb/Kconfig @@ -160,8 +160,8 @@ config USB_TI_CPPI_DMA Enable DMA transfers when TI CPPI DMA is available. config USB_TI_CPPI41_DMA - bool 'TI CPPI 4.1 (AM335x)' - depends on ARCH_OMAP && DMADEVICES + bool 'TI CPPI 4.1' + depends on (ARCH_OMAP || ARCH_DAVINCI_DA8XX) && DMADEVICES select TI_CPPI41 config USB_TUSB_OMAP_DMA diff --git a/drivers/usb/musb/cppi_dma.c b/drivers/usb/musb/cppi_dma.c index c4fabe952ca6..a13bd3625043 100644 --- a/drivers/usb/musb/cppi_dma.c +++ b/drivers/usb/musb/cppi_dma.c @@ -582,9 +582,10 @@ cppi_next_tx_segment(struct musb *musb, struct cppi_channel *tx) maxpacket = length; n_bds = 1; } else { - n_bds = length / maxpacket; - if (!length || (length % maxpacket)) - n_bds++; + if (length) + n_bds = DIV_ROUND_UP(length, maxpacket); + else + n_bds = 1; n_bds = min(n_bds, (unsigned) NUM_TXCHAN_BD); length = min(n_bds * maxpacket, length); } @@ -790,9 +791,7 @@ cppi_next_rx_segment(struct musb *musb, struct cppi_channel *rx, int onepacket) n_bds = 0xffff / maxpacket; length = n_bds * maxpacket; } else { - n_bds = length / maxpacket; - if (length % maxpacket) - n_bds++; + n_bds = DIV_ROUND_UP(length, maxpacket); } if (n_bds == 1) onepacket = 1; diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index d79c288ccbf2..df88123274ca 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -33,6 +33,7 @@ #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> +#include <linux/of_platform.h> #include <linux/phy/phy.h> #include <linux/platform_device.h> #include <linux/dma-mapping.h> @@ -456,12 +457,41 @@ static inline u8 get_vbus_power(struct device *dev) return current_uA / 1000 / 2; } +#ifdef CONFIG_USB_TI_CPPI41_DMA +static void da8xx_dma_controller_callback(struct dma_controller *c) +{ + struct musb *musb = c->musb; + void __iomem *reg_base = musb->ctrl_base; + + musb_writel(reg_base, DA8XX_USB_END_OF_INTR_REG, 0); +} + +static struct dma_controller * +da8xx_dma_controller_create(struct musb *musb, void __iomem *base) +{ + struct dma_controller *controller; + + controller = cppi41_dma_controller_create(musb, base); + if (IS_ERR_OR_NULL(controller)) + return controller; + + controller->dma_callback = da8xx_dma_controller_callback; + + return controller; +} +#endif + static const struct musb_platform_ops da8xx_ops = { - .quirks = MUSB_INDEXED_EP | MUSB_PRESERVE_SESSION, + .quirks = MUSB_INDEXED_EP | MUSB_PRESERVE_SESSION | + MUSB_DMA_CPPI41 | MUSB_DA8XX, .init = da8xx_musb_init, .exit = da8xx_musb_exit, .fifo_mode = 2, +#ifdef CONFIG_USB_TI_CPPI41_DMA + .dma_init = da8xx_dma_controller_create, + .dma_exit = cppi41_dma_controller_destroy, +#endif .enable = da8xx_musb_enable, .disable = da8xx_musb_disable, @@ -483,6 +513,12 @@ static const struct musb_hdrc_config da8xx_config = { .multipoint = 1, }; +static struct of_dev_auxdata da8xx_auxdata_lookup[] = { + OF_DEV_AUXDATA("ti,da830-cppi41", 0x01e01000, "cppi41-dmaengine", + NULL), + {} +}; + static int da8xx_probe(struct platform_device *pdev) { struct resource musb_resources[2]; @@ -533,6 +569,11 @@ static int da8xx_probe(struct platform_device *pdev) } platform_set_drvdata(pdev, glue); + ret = of_platform_populate(pdev->dev.of_node, NULL, + da8xx_auxdata_lookup, &pdev->dev); + if (ret) + return ret; + memset(musb_resources, 0x00, sizeof(*musb_resources) * ARRAY_SIZE(musb_resources)); diff --git a/drivers/usb/musb/musb_core.c b/drivers/usb/musb/musb_core.c index 0c3664ab705e..870da18f5077 100644 --- a/drivers/usb/musb/musb_core.c +++ b/drivers/usb/musb/musb_core.c @@ -2332,7 +2332,7 @@ musb_init_controller(struct device *dev, int nIrq, void __iomem *ctrl) setup_timer(&musb->otg_timer, musb_otg_timer_func, (unsigned long) musb); /* attach to the IRQ */ - if (request_irq(nIrq, musb->isr, 0, dev_name(dev), musb)) { + if (request_irq(nIrq, musb->isr, IRQF_SHARED, dev_name(dev), musb)) { dev_err(dev, "request_irq %d failed!\n", nIrq); status = -ENODEV; goto fail3; diff --git a/drivers/usb/musb/musb_core.h b/drivers/usb/musb/musb_core.h index 5b708be6d1d1..3e98d4268a64 100644 --- a/drivers/usb/musb/musb_core.h +++ b/drivers/usb/musb/musb_core.h @@ -172,6 +172,7 @@ struct musb_io; */ struct musb_platform_ops { +#define MUSB_DA8XX BIT(8) #define MUSB_PRESERVE_SESSION BIT(7) #define MUSB_DMA_UX500 BIT(6) #define MUSB_DMA_CPPI41 BIT(5) diff --git a/drivers/usb/musb/musb_cppi41.c b/drivers/usb/musb/musb_cppi41.c index 355655f8a3fb..e7c8b1b8bf22 100644 --- a/drivers/usb/musb/musb_cppi41.c +++ b/drivers/usb/musb/musb_cppi41.c @@ -571,6 +571,10 @@ static int cppi41_dma_channel_abort(struct dma_channel *channel) } } + /* DA8xx Advisory 2.3.27: wait 250 ms before to start the teardown */ + if (musb->io.quirks & MUSB_DA8XX) + mdelay(250); + tdbit = 1 << cppi41_channel->port_num; if (is_tx) tdbit <<= 16; diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 61cef7511a50..3006f569c068 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -74,13 +74,6 @@ config AM335X_PHY_USB This driver provides PHY support for that phy which part for the AM335x SoC. -config SAMSUNG_USBPHY - tristate - help - Enable this to support Samsung USB phy helper driver for Samsung SoCs. - This driver provides common interface to interact, for Samsung USB 2.0 PHY - driver and later for Samsung USB 3.0 PHY driver. - config TWL6030_USB tristate "TWL6030 USB Transceiver Driver" depends on TWL4030_CORE && OMAP_USB2 && USB_MUSB_OMAP2PLUS diff --git a/drivers/usb/phy/Makefile b/drivers/usb/phy/Makefile index b433e5d89be4..e7c9ca8cafb0 100644 --- a/drivers/usb/phy/Makefile +++ b/drivers/usb/phy/Makefile @@ -14,7 +14,6 @@ obj-$(CONFIG_TAHVO_USB) += phy-tahvo.o obj-$(CONFIG_AM335X_CONTROL_USB) += phy-am335x-control.o obj-$(CONFIG_AM335X_PHY_USB) += phy-am335x.o obj-$(CONFIG_OMAP_OTG) += phy-omap-otg.o -obj-$(CONFIG_SAMSUNG_USBPHY) += phy-samsung-usb.o obj-$(CONFIG_TWL6030_USB) += phy-twl6030-usb.o obj-$(CONFIG_USB_EHCI_TEGRA) += phy-tegra-usb.o obj-$(CONFIG_USB_GPIO_VBUS) += phy-gpio-vbus-usb.o diff --git a/drivers/usb/phy/phy-fsl-usb.c b/drivers/usb/phy/phy-fsl-usb.c index 392ab422163c..cf8f40ae6e01 100644 --- a/drivers/usb/phy/phy-fsl-usb.c +++ b/drivers/usb/phy/phy-fsl-usb.c @@ -44,6 +44,13 @@ #include "phy-fsl-usb.h" +#ifdef VERBOSE +#define VDBG(fmt, args...) pr_debug("[%s] " fmt, \ + __func__, ## args) +#else +#define VDBG(stuff...) do {} while (0) +#endif + #define DRIVER_VERSION "Rev. 1.55" #define DRIVER_AUTHOR "Jerry Huang/Li Yang" #define DRIVER_DESC "Freescale USB OTG Transceiver Driver" diff --git a/drivers/usb/serial/aircable.c b/drivers/usb/serial/aircable.c index 80a9845cd93f..569c2200ba42 100644 --- a/drivers/usb/serial/aircable.c +++ b/drivers/usb/serial/aircable.c @@ -29,12 +29,6 @@ * is any other control code, I will simply check for the first * one. * - * The driver registers himself with the USB-serial core and the USB Core. I had - * to implement a probe function against USB-serial, because other way, the - * driver was attaching himself to both interfaces. I have tried with different - * configurations of usb_serial_driver with out exit, only the probe function - * could handle this correctly. - * * I have taken some info from a Greg Kroah-Hartman article: * http://www.linuxjournal.com/article/6573 * And from Linux Device Driver Kit CD, which is a great work, the authors taken @@ -93,30 +87,17 @@ static int aircable_prepare_write_buffer(struct usb_serial_port *port, return count + HCI_HEADER_LENGTH; } -static int aircable_probe(struct usb_serial *serial, - const struct usb_device_id *id) +static int aircable_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { - struct usb_host_interface *iface_desc = serial->interface-> - cur_altsetting; - struct usb_endpoint_descriptor *endpoint; - int num_bulk_out = 0; - int i; - - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - if (usb_endpoint_is_bulk_out(endpoint)) { - dev_dbg(&serial->dev->dev, - "found bulk out on endpoint %d\n", i); - ++num_bulk_out; - } - } - - if (num_bulk_out == 0) { - dev_dbg(&serial->dev->dev, "Invalid interface, discarding\n"); + /* Ignore the first interface, which has no bulk endpoints. */ + if (epds->num_bulk_out == 0) { + dev_dbg(&serial->interface->dev, + "ignoring interface with no bulk-out endpoints\n"); return -ENODEV; } - return 0; + return 1; } static int aircable_process_packet(struct usb_serial_port *port, @@ -164,9 +145,8 @@ static struct usb_serial_driver aircable_device = { .name = "aircable", }, .id_table = id_table, - .num_ports = 1, .bulk_out_size = HCI_COMPLETE_FRAME, - .probe = aircable_probe, + .calc_num_ports = aircable_calc_num_ports, .process_read_urb = aircable_process_read_urb, .prepare_write_buffer = aircable_prepare_write_buffer, .throttle = usb_serial_generic_throttle, diff --git a/drivers/usb/serial/ark3116.c b/drivers/usb/serial/ark3116.c index 2779e59c30f1..0adbd38b4eea 100644 --- a/drivers/usb/serial/ark3116.c +++ b/drivers/usb/serial/ark3116.c @@ -122,19 +122,6 @@ static inline int calc_divisor(int bps) return (12000000 + 2*bps) / (4*bps); } -static int ark3116_attach(struct usb_serial *serial) -{ - /* make sure we have our end-points */ - if (serial->num_bulk_in == 0 || - serial->num_bulk_out == 0 || - serial->num_interrupt_in == 0) { - dev_err(&serial->interface->dev, "missing endpoint\n"); - return -ENODEV; - } - - return 0; -} - static int ark3116_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; @@ -671,7 +658,9 @@ static struct usb_serial_driver ark3116_device = { }, .id_table = id_table, .num_ports = 1, - .attach = ark3116_attach, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .port_probe = ark3116_port_probe, .port_remove = ark3116_port_remove, .set_termios = ark3116_set_termios, diff --git a/drivers/usb/serial/cyberjack.c b/drivers/usb/serial/cyberjack.c index 80260b08398b..47fbd9f0c0c7 100644 --- a/drivers/usb/serial/cyberjack.c +++ b/drivers/usb/serial/cyberjack.c @@ -50,7 +50,6 @@ #define CYBERJACK_PRODUCT_ID 0x0100 /* Function prototypes */ -static int cyberjack_attach(struct usb_serial *serial); static int cyberjack_port_probe(struct usb_serial_port *port); static int cyberjack_port_remove(struct usb_serial_port *port); static int cyberjack_open(struct tty_struct *tty, @@ -78,7 +77,7 @@ static struct usb_serial_driver cyberjack_device = { .description = "Reiner SCT Cyberjack USB card reader", .id_table = id_table, .num_ports = 1, - .attach = cyberjack_attach, + .num_bulk_out = 1, .port_probe = cyberjack_port_probe, .port_remove = cyberjack_port_remove, .open = cyberjack_open, @@ -102,14 +101,6 @@ struct cyberjack_private { short wrsent; /* Data already sent */ }; -static int cyberjack_attach(struct usb_serial *serial) -{ - if (serial->num_bulk_out < serial->num_ports) - return -ENODEV; - - return 0; -} - static int cyberjack_port_probe(struct usb_serial_port *port) { struct cyberjack_private *priv; diff --git a/drivers/usb/serial/digi_acceleport.c b/drivers/usb/serial/digi_acceleport.c index 6537d3ca2797..2ce39af32cfa 100644 --- a/drivers/usb/serial/digi_acceleport.c +++ b/drivers/usb/serial/digi_acceleport.c @@ -273,6 +273,8 @@ static struct usb_serial_driver digi_acceleport_2_device = { .description = "Digi 2 port USB adapter", .id_table = id_table_2, .num_ports = 3, + .num_bulk_in = 4, + .num_bulk_out = 4, .open = digi_open, .close = digi_close, .dtr_rts = digi_dtr_rts, @@ -302,6 +304,8 @@ static struct usb_serial_driver digi_acceleport_4_device = { .description = "Digi 4 port USB adapter", .id_table = id_table_4, .num_ports = 4, + .num_bulk_in = 5, + .num_bulk_out = 5, .open = digi_open, .close = digi_close, .write = digi_write, @@ -1251,27 +1255,8 @@ static int digi_port_init(struct usb_serial_port *port, unsigned port_num) static int digi_startup(struct usb_serial *serial) { - struct device *dev = &serial->interface->dev; struct digi_serial *serial_priv; int ret; - int i; - - /* check whether the device has the expected number of endpoints */ - if (serial->num_port_pointers < serial->type->num_ports + 1) { - dev_err(dev, "OOB endpoints missing\n"); - return -ENODEV; - } - - for (i = 0; i < serial->type->num_ports + 1 ; i++) { - if (!serial->port[i]->read_urb) { - dev_err(dev, "bulk-in endpoint missing\n"); - return -ENODEV; - } - if (!serial->port[i]->write_urb) { - dev_err(dev, "bulk-out endpoint missing\n"); - return -ENODEV; - } - } serial_priv = kzalloc(sizeof(*serial_priv), GFP_KERNEL); if (!serial_priv) diff --git a/drivers/usb/serial/f81534.c b/drivers/usb/serial/f81534.c index 22f23a429a95..3d616a2a9f96 100644 --- a/drivers/usb/serial/f81534.c +++ b/drivers/usb/serial/f81534.c @@ -611,20 +611,30 @@ static int f81534_find_config_idx(struct usb_serial *serial, u8 *index) * The f81534_calc_num_ports() will run to "new style" with checking * F81534_PORT_UNAVAILABLE section. */ -static int f81534_calc_num_ports(struct usb_serial *serial) +static int f81534_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { + struct device *dev = &serial->interface->dev; + int size_bulk_in = usb_endpoint_maxp(epds->bulk_in[0]); + int size_bulk_out = usb_endpoint_maxp(epds->bulk_out[0]); u8 setting[F81534_CUSTOM_DATA_SIZE]; u8 setting_idx; u8 num_port = 0; int status; size_t i; + if (size_bulk_out != F81534_WRITE_BUFFER_SIZE || + size_bulk_in != F81534_MAX_RECEIVE_BLOCK_SIZE) { + dev_err(dev, "unsupported endpoint max packet size\n"); + return -ENODEV; + } + /* Check had custom setting */ status = f81534_find_config_idx(serial, &setting_idx); if (status) { dev_err(&serial->interface->dev, "%s: find idx failed: %d\n", __func__, status); - return 0; + return status; } /* @@ -640,7 +650,7 @@ static int f81534_calc_num_ports(struct usb_serial *serial) dev_err(&serial->interface->dev, "%s: get custom data failed: %d\n", __func__, status); - return 0; + return status; } dev_dbg(&serial->interface->dev, @@ -656,7 +666,7 @@ static int f81534_calc_num_ports(struct usb_serial *serial) dev_err(&serial->interface->dev, "%s: read failed: %d\n", __func__, status); - return 0; + return status; } dev_dbg(&serial->interface->dev, "%s: read default config\n", @@ -671,12 +681,24 @@ static int f81534_calc_num_ports(struct usb_serial *serial) ++num_port; } - if (num_port) - return num_port; + if (!num_port) { + dev_warn(&serial->interface->dev, + "no config found, assuming 4 ports\n"); + num_port = 4; /* Nothing found, oldest version IC */ + } + + /* + * Setup bulk-out endpoint multiplexing. All ports share the same + * bulk-out endpoint. + */ + BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_out) < F81534_NUM_PORT); + + for (i = 1; i < num_port; ++i) + epds->bulk_out[i] = epds->bulk_out[0]; - dev_warn(&serial->interface->dev, "%s: Read Failed. default 4 ports\n", - __func__); - return 4; /* Nothing found, oldest version IC */ + epds->num_bulk_out = num_port; + + return num_port; } static void f81534_set_termios(struct tty_struct *tty, @@ -1067,96 +1089,6 @@ static void f81534_write_usb_callback(struct urb *urb) } } -static int f81534_setup_ports(struct usb_serial *serial) -{ - struct usb_serial_port *port; - u8 port0_out_address; - int buffer_size; - size_t i; - - /* - * In our system architecture, we had 2 or 4 serial ports, - * but only get 1 set of bulk in/out endpoints. - * - * The usb-serial subsystem will generate port 0 data, - * but port 1/2/3 will not. It's will generate write URB and buffer - * by following code and use the port0 read URB for read operation. - */ - for (i = 1; i < serial->num_ports; ++i) { - port0_out_address = serial->port[0]->bulk_out_endpointAddress; - buffer_size = serial->port[0]->bulk_out_size; - port = serial->port[i]; - - if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL)) - return -ENOMEM; - - port->bulk_out_size = buffer_size; - port->bulk_out_endpointAddress = port0_out_address; - - port->write_urbs[0] = usb_alloc_urb(0, GFP_KERNEL); - if (!port->write_urbs[0]) - return -ENOMEM; - - port->bulk_out_buffers[0] = kzalloc(buffer_size, GFP_KERNEL); - if (!port->bulk_out_buffers[0]) - return -ENOMEM; - - usb_fill_bulk_urb(port->write_urbs[0], serial->dev, - usb_sndbulkpipe(serial->dev, - port0_out_address), - port->bulk_out_buffers[0], buffer_size, - serial->type->write_bulk_callback, port); - - port->write_urb = port->write_urbs[0]; - port->bulk_out_buffer = port->bulk_out_buffers[0]; - } - - return 0; -} - -static int f81534_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - struct usb_endpoint_descriptor *endpoint; - struct usb_host_interface *iface_desc; - struct device *dev; - int num_bulk_in = 0; - int num_bulk_out = 0; - int size_bulk_in = 0; - int size_bulk_out = 0; - int i; - - dev = &serial->interface->dev; - iface_desc = serial->interface->cur_altsetting; - - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_bulk_in(endpoint)) { - ++num_bulk_in; - size_bulk_in = usb_endpoint_maxp(endpoint); - } - - if (usb_endpoint_is_bulk_out(endpoint)) { - ++num_bulk_out; - size_bulk_out = usb_endpoint_maxp(endpoint); - } - } - - if (num_bulk_in != 1 || num_bulk_out != 1) { - dev_err(dev, "expected endpoints not found\n"); - return -ENODEV; - } - - if (size_bulk_out != F81534_WRITE_BUFFER_SIZE || - size_bulk_in != F81534_MAX_RECEIVE_BLOCK_SIZE) { - dev_err(dev, "unsupported endpoint max packet size\n"); - return -ENODEV; - } - - return 0; -} - static int f81534_attach(struct usb_serial *serial) { struct f81534_serial_private *serial_priv; @@ -1173,10 +1105,6 @@ static int f81534_attach(struct usb_serial *serial) mutex_init(&serial_priv->urb_mutex); - status = f81534_setup_ports(serial); - if (status) - return status; - /* Check had custom setting */ status = f81534_find_config_idx(serial, &serial_priv->setting_idx); if (status) { @@ -1380,12 +1308,13 @@ static struct usb_serial_driver f81534_device = { }, .description = DRIVER_DESC, .id_table = f81534_id_table, + .num_bulk_in = 1, + .num_bulk_out = 1, .open = f81534_open, .close = f81534_close, .write = f81534_write, .tx_empty = f81534_tx_empty, .calc_num_ports = f81534_calc_num_ports, - .probe = f81534_probe, .attach = f81534_attach, .port_probe = f81534_port_probe, .dtr_rts = f81534_dtr_rts, diff --git a/drivers/usb/serial/ftdi_sio.c b/drivers/usb/serial/ftdi_sio.c index c540de15aad2..d38780fa8788 100644 --- a/drivers/usb/serial/ftdi_sio.c +++ b/drivers/usb/serial/ftdi_sio.c @@ -873,6 +873,7 @@ static const struct usb_device_id id_table_combined[] = { { USB_DEVICE_AND_INTERFACE_INFO(MICROCHIP_VID, MICROCHIP_USB_BOARD_PID, USB_CLASS_VENDOR_SPEC, USB_SUBCLASS_VENDOR_SPEC, 0x00) }, + { USB_DEVICE_INTERFACE_NUMBER(ACTEL_VID, MICROSEMI_ARROW_SF2PLUS_BOARD_PID, 2) }, { USB_DEVICE(JETI_VID, JETI_SPC1201_PID) }, { USB_DEVICE(MARVELL_VID, MARVELL_SHEEVAPLUG_PID), .driver_info = (kernel_ulong_t)&ftdi_jtag_quirk }, @@ -1406,6 +1407,9 @@ static int write_latency_timer(struct usb_serial_port *port) int rv; int l = priv->latency; + if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) + return -EINVAL; + if (priv->flags & ASYNC_LOW_LATENCY) l = 1; @@ -1422,7 +1426,7 @@ static int write_latency_timer(struct usb_serial_port *port) return rv; } -static int read_latency_timer(struct usb_serial_port *port) +static int _read_latency_timer(struct usb_serial_port *port) { struct ftdi_private *priv = usb_get_serial_port_data(port); struct usb_device *udev = port->serial->dev; @@ -1440,11 +1444,10 @@ static int read_latency_timer(struct usb_serial_port *port) 0, priv->interface, buf, 1, WDR_TIMEOUT); if (rv < 1) { - dev_err(&port->dev, "Unable to read latency timer: %i\n", rv); if (rv >= 0) rv = -EIO; } else { - priv->latency = buf[0]; + rv = buf[0]; } kfree(buf); @@ -1452,6 +1455,25 @@ static int read_latency_timer(struct usb_serial_port *port) return rv; } +static int read_latency_timer(struct usb_serial_port *port) +{ + struct ftdi_private *priv = usb_get_serial_port_data(port); + int rv; + + if (priv->chip_type == SIO || priv->chip_type == FT8U232AM) + return -EINVAL; + + rv = _read_latency_timer(port); + if (rv < 0) { + dev_err(&port->dev, "Unable to read latency timer: %i\n", rv); + return rv; + } + + priv->latency = rv; + + return 0; +} + static int get_serial_info(struct usb_serial_port *port, struct serial_struct __user *retinfo) { @@ -1603,9 +1625,19 @@ static void ftdi_determine_type(struct usb_serial_port *port) priv->baud_base = 12000000 / 16; } else if (version < 0x400) { /* Assume it's an FT8U232AM (or FT8U245AM) */ - /* (It might be a BM because of the iSerialNumber bug, - * but it will still work as an AM device.) */ priv->chip_type = FT8U232AM; + /* + * It might be a BM type because of the iSerialNumber bug. + * If iSerialNumber==0 and the latency timer is readable, + * assume it is BM type. + */ + if (udev->descriptor.iSerialNumber == 0 && + _read_latency_timer(port) >= 0) { + dev_dbg(&port->dev, + "%s: has latency timer so not an AM type\n", + __func__); + priv->chip_type = FT232BM; + } } else if (version < 0x600) { /* Assume it's an FT232BM (or FT245BM) */ priv->chip_type = FT232BM; @@ -1685,9 +1717,12 @@ static ssize_t latency_timer_store(struct device *dev, { struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); - int v = simple_strtoul(valbuf, NULL, 10); + u8 v; int rv; + if (kstrtou8(valbuf, 10, &v)) + return -EINVAL; + priv->latency = v; rv = write_latency_timer(port); if (rv < 0) @@ -1704,10 +1739,13 @@ static ssize_t store_event_char(struct device *dev, struct usb_serial_port *port = to_usb_serial_port(dev); struct ftdi_private *priv = usb_get_serial_port_data(port); struct usb_device *udev = port->serial->dev; - int v = simple_strtoul(valbuf, NULL, 10); + unsigned int v; int rv; - dev_dbg(&port->dev, "%s: setting event char = %i\n", __func__, v); + if (kstrtouint(valbuf, 0, &v) || v >= 0x200) + return -EINVAL; + + dev_dbg(&port->dev, "%s: setting event char = 0x%03x\n", __func__, v); rv = usb_control_msg(udev, usb_sndctrlpipe(udev, 0), diff --git a/drivers/usb/serial/ftdi_sio_ids.h b/drivers/usb/serial/ftdi_sio_ids.h index 48ee04c94a75..71fb9e59db71 100644 --- a/drivers/usb/serial/ftdi_sio_ids.h +++ b/drivers/usb/serial/ftdi_sio_ids.h @@ -873,6 +873,12 @@ #define FIC_VID 0x1457 #define FIC_NEO1973_DEBUG_PID 0x5118 +/* + * Actel / Microsemi + */ +#define ACTEL_VID 0x1514 +#define MICROSEMI_ARROW_SF2PLUS_BOARD_PID 0x2008 + /* Olimex */ #define OLIMEX_VID 0x15BA #define OLIMEX_ARM_USB_OCD_PID 0x0003 diff --git a/drivers/usb/serial/generic.c b/drivers/usb/serial/generic.c index 49ce2be90fa0..35cb8c0e584f 100644 --- a/drivers/usb/serial/generic.c +++ b/drivers/usb/serial/generic.c @@ -37,13 +37,41 @@ MODULE_PARM_DESC(product, "User specified USB idProduct"); static struct usb_device_id generic_device_ids[2]; /* Initially all zeroes. */ -struct usb_serial_driver usb_serial_generic_device = { +static int usb_serial_generic_probe(struct usb_serial *serial, + const struct usb_device_id *id) +{ + struct device *dev = &serial->interface->dev; + + dev_info(dev, "The \"generic\" usb-serial driver is only for testing and one-off prototypes.\n"); + dev_info(dev, "Tell linux-usb@vger.kernel.org to add your device to a proper driver.\n"); + + return 0; +} + +static int usb_serial_generic_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + struct device *dev = &serial->interface->dev; + int num_ports; + + num_ports = max(epds->num_bulk_in, epds->num_bulk_out); + + if (num_ports == 0) { + dev_err(dev, "device has no bulk endpoints\n"); + return -ENODEV; + } + + return num_ports; +} + +static struct usb_serial_driver usb_serial_generic_device = { .driver = { .owner = THIS_MODULE, .name = "generic", }, .id_table = generic_device_ids, - .num_ports = 1, + .probe = usb_serial_generic_probe, + .calc_num_ports = usb_serial_generic_calc_num_ports, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, .resume = usb_serial_generic_resume, diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c index bb7673e80a57..bdf8bd814a9a 100644 --- a/drivers/usb/serial/io_edgeport.c +++ b/drivers/usb/serial/io_edgeport.c @@ -1544,11 +1544,6 @@ static void edge_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); - unsigned int cflag; - - cflag = tty->termios.c_cflag; - dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, tty->termios.c_cflag, tty->termios.c_iflag); - dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, old_termios->c_cflag, old_termios->c_iflag); if (edge_port == NULL) return; @@ -2844,14 +2839,9 @@ static int edge_startup(struct usb_serial *serial) bool interrupt_in_found; bool bulk_in_found; bool bulk_out_found; - static __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, - EDGE_COMPATIBILITY_MASK1, - EDGE_COMPATIBILITY_MASK2 }; - - if (serial->num_bulk_in < 1 || serial->num_interrupt_in < 1) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } + static const __u32 descriptor[3] = { EDGE_COMPATIBILITY_MASK0, + EDGE_COMPATIBILITY_MASK1, + EDGE_COMPATIBILITY_MASK2 }; dev = serial->dev; @@ -3120,6 +3110,9 @@ static struct usb_serial_driver edgeport_2port_device = { .description = "Edgeport 2 port adapter", .id_table = edgeport_2port_id_table, .num_ports = 2, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, @@ -3152,6 +3145,9 @@ static struct usb_serial_driver edgeport_4port_device = { .description = "Edgeport 4 port adapter", .id_table = edgeport_4port_id_table, .num_ports = 4, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, @@ -3184,6 +3180,9 @@ static struct usb_serial_driver edgeport_8port_device = { .description = "Edgeport 8 port adapter", .id_table = edgeport_8port_id_table, .num_ports = 8, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, @@ -3216,6 +3215,9 @@ static struct usb_serial_driver epic_device = { .description = "EPiC device", .id_table = Epic_port_id_table, .num_ports = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, diff --git a/drivers/usb/serial/io_ti.c b/drivers/usb/serial/io_ti.c index a76b95d32157..87798e625d6c 100644 --- a/drivers/usb/serial/io_ti.c +++ b/drivers/usb/serial/io_ti.c @@ -1933,13 +1933,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) if (edge_serial->num_ports_open == 0) { /* we are the first port to open, post the interrupt urb */ urb = edge_serial->serial->port[0]->interrupt_in_urb; - if (!urb) { - dev_err(&port->dev, - "%s - no interrupt urb present, exiting\n", - __func__); - status = -EINVAL; - goto release_es_lock; - } urb->context = edge_serial; status = usb_submit_urb(urb, GFP_KERNEL); if (status) { @@ -1959,12 +1952,6 @@ static int edge_open(struct tty_struct *tty, struct usb_serial_port *port) /* start up our bulk read urb */ urb = port->read_urb; - if (!urb) { - dev_err(&port->dev, "%s - no read urb present, exiting\n", - __func__); - status = -EINVAL; - goto unlink_int_urb; - } edge_port->ep_read_urb_state = EDGE_READ_URB_RUNNING; urb->context = edge_port; status = usb_submit_urb(urb, GFP_KERNEL); @@ -2385,14 +2372,6 @@ static void edge_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { struct edgeport_port *edge_port = usb_get_serial_port_data(port); - unsigned int cflag; - - cflag = tty->termios.c_cflag; - - dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, - tty->termios.c_cflag, tty->termios.c_iflag); - dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, - old_termios->c_cflag, old_termios->c_iflag); if (edge_port == NULL) return; @@ -2544,19 +2523,31 @@ static void edge_heartbeat_work(struct work_struct *work) edge_heartbeat_schedule(serial); } -static int edge_startup(struct usb_serial *serial) +static int edge_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { - struct edgeport_serial *edge_serial; - int status; - u16 product_id; + struct device *dev = &serial->interface->dev; + unsigned char num_ports = serial->type->num_ports; /* Make sure we have the required endpoints when in download mode. */ if (serial->interface->cur_altsetting->desc.bNumEndpoints > 1) { - if (serial->num_bulk_in < serial->num_ports || - serial->num_bulk_out < serial->num_ports) + if (epds->num_bulk_in < num_ports || + epds->num_bulk_out < num_ports || + epds->num_interrupt_in < 1) { + dev_err(dev, "required endpoints missing\n"); return -ENODEV; + } } + return num_ports; +} + +static int edge_startup(struct usb_serial *serial) +{ + struct edgeport_serial *edge_serial; + int status; + u16 product_id; + /* create our private serial structure */ edge_serial = kzalloc(sizeof(struct edgeport_serial), GFP_KERNEL); if (!edge_serial) @@ -2736,11 +2727,13 @@ static struct usb_serial_driver edgeport_1port_device = { .description = "Edgeport TI 1 port adapter", .id_table = edgeport_1port_id_table, .num_ports = 1, + .num_bulk_out = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, + .calc_num_ports = edge_calc_num_ports, .disconnect = edge_disconnect, .release = edge_release, .port_probe = edge_port_probe, @@ -2773,11 +2766,13 @@ static struct usb_serial_driver edgeport_2port_device = { .description = "Edgeport TI 2 port adapter", .id_table = edgeport_2port_id_table, .num_ports = 2, + .num_bulk_out = 1, .open = edge_open, .close = edge_close, .throttle = edge_throttle, .unthrottle = edge_unthrottle, .attach = edge_startup, + .calc_num_ports = edge_calc_num_ports, .disconnect = edge_disconnect, .release = edge_release, .port_probe = edge_port_probe, diff --git a/drivers/usb/serial/ipaq.c b/drivers/usb/serial/ipaq.c index ec1b8f2c1183..cde0dcdce9c4 100644 --- a/drivers/usb/serial/ipaq.c +++ b/drivers/usb/serial/ipaq.c @@ -33,7 +33,8 @@ static int initial_wait; /* Function prototypes for an ipaq */ static int ipaq_open(struct tty_struct *tty, struct usb_serial_port *port); -static int ipaq_calc_num_ports(struct usb_serial *serial); +static int ipaq_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds); static int ipaq_startup(struct usb_serial *serial); static const struct usb_device_id ipaq_id_table[] = { @@ -550,42 +551,38 @@ static int ipaq_open(struct tty_struct *tty, return usb_serial_generic_open(tty, port); } -static int ipaq_calc_num_ports(struct usb_serial *serial) +static int ipaq_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { /* - * some devices have 3 endpoints, the 3rd of which - * must be ignored as it would make the core - * create a second port which oopses when used + * Some of the devices in ipaq_id_table[] are composite, and we + * shouldn't bind to all the interfaces. This test will rule out + * some obviously invalid possibilities. */ - int ipaq_num_ports = 1; - - dev_dbg(&serial->dev->dev, "%s - numberofendpoints: %d\n", __func__, - (int)serial->interface->cur_altsetting->desc.bNumEndpoints); + if (epds->num_bulk_in == 0 || epds->num_bulk_out == 0) + return -ENODEV; /* - * a few devices have 4 endpoints, seemingly Yakuma devices, - * and we need the second pair, so let them have 2 ports - * - * TODO: can we drop port 1 ? + * A few devices have four endpoints, seemingly Yakuma devices, and + * we need the second pair. */ - if (serial->interface->cur_altsetting->desc.bNumEndpoints > 3) { - ipaq_num_ports = 2; + if (epds->num_bulk_in > 1 && epds->num_bulk_out > 1) { + epds->bulk_in[0] = epds->bulk_in[1]; + epds->bulk_out[0] = epds->bulk_out[1]; } - return ipaq_num_ports; -} + /* + * Other devices have 3 endpoints, but we only use the first bulk in + * and out endpoints. + */ + epds->num_bulk_in = 1; + epds->num_bulk_out = 1; + return 1; +} static int ipaq_startup(struct usb_serial *serial) { - /* Some of the devices in ipaq_id_table[] are composite, and we - * shouldn't bind to all the interfaces. This test will rule out - * some obviously invalid possibilities. - */ - if (serial->num_bulk_in < serial->num_ports || - serial->num_bulk_out < serial->num_ports) - return -ENODEV; - if (serial->dev->actconfig->desc.bConfigurationValue != 1) { /* * FIXME: HP iPaq rx3715, possibly others, have 1 config that @@ -597,10 +594,6 @@ static int ipaq_startup(struct usb_serial *serial) return -ENODEV; } - dev_dbg(&serial->dev->dev, - "%s - iPAQ module configured for %d ports\n", __func__, - serial->num_ports); - return usb_reset_configuration(serial->dev); } diff --git a/drivers/usb/serial/iuu_phoenix.c b/drivers/usb/serial/iuu_phoenix.c index 030390f37b0a..18fc992a245f 100644 --- a/drivers/usb/serial/iuu_phoenix.c +++ b/drivers/usb/serial/iuu_phoenix.c @@ -68,16 +68,6 @@ struct iuu_private { u32 clk; }; -static int iuu_attach(struct usb_serial *serial) -{ - unsigned char num_ports = serial->num_ports; - - if (serial->num_bulk_in < num_ports || serial->num_bulk_out < num_ports) - return -ENODEV; - - return 0; -} - static int iuu_port_probe(struct usb_serial_port *port) { struct iuu_private *priv; @@ -598,9 +588,8 @@ static void read_buf_callback(struct urb *urb) } dev_dbg(&port->dev, "%s - %i chars to write\n", __func__, urb->actual_length); - if (data == NULL) - dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); - if (urb->actual_length && data) { + + if (urb->actual_length) { tty_insert_flip_string(&port->port, data, urb->actual_length); tty_flip_buffer_push(&port->port); } @@ -665,10 +654,8 @@ static void iuu_uart_read_callback(struct urb *urb) /* error stop all */ return; } - if (data == NULL) - dev_dbg(&port->dev, "%s - data is NULL !!!\n", __func__); - if (urb->actual_length == 1 && data != NULL) + if (urb->actual_length == 1) len = (int) data[0]; if (urb->actual_length > 1) { @@ -1183,6 +1170,8 @@ static struct usb_serial_driver iuu_device = { }, .id_table = id_table, .num_ports = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, .bulk_in_size = 512, .bulk_out_size = 512, .open = iuu_open, @@ -1193,7 +1182,6 @@ static struct usb_serial_driver iuu_device = { .tiocmset = iuu_tiocmset, .set_termios = iuu_set_termios, .init_termios = iuu_init_termios, - .attach = iuu_attach, .port_probe = iuu_port_probe, .port_remove = iuu_port_remove, }; diff --git a/drivers/usb/serial/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c index d2dab2a341b8..196908dd25a1 100644 --- a/drivers/usb/serial/keyspan_pda.c +++ b/drivers/usb/serial/keyspan_pda.c @@ -708,19 +708,6 @@ MODULE_FIRMWARE("keyspan_pda/keyspan_pda.fw"); MODULE_FIRMWARE("keyspan_pda/xircom_pgs.fw"); #endif -static int keyspan_pda_attach(struct usb_serial *serial) -{ - unsigned char num_ports = serial->num_ports; - - if (serial->num_bulk_out < num_ports || - serial->num_interrupt_in < num_ports) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } - - return 0; -} - static int keyspan_pda_port_probe(struct usb_serial_port *port) { @@ -784,6 +771,8 @@ static struct usb_serial_driver keyspan_pda_device = { .description = "Keyspan PDA", .id_table = id_table_std, .num_ports = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .dtr_rts = keyspan_pda_dtr_rts, .open = keyspan_pda_open, .close = keyspan_pda_close, @@ -798,7 +787,6 @@ static struct usb_serial_driver keyspan_pda_device = { .break_ctl = keyspan_pda_break_ctl, .tiocmget = keyspan_pda_tiocmget, .tiocmset = keyspan_pda_tiocmset, - .attach = keyspan_pda_attach, .port_probe = keyspan_pda_port_probe, .port_remove = keyspan_pda_port_remove, }; diff --git a/drivers/usb/serial/kobil_sct.c b/drivers/usb/serial/kobil_sct.c index 813035f51fe7..3024b9b25360 100644 --- a/drivers/usb/serial/kobil_sct.c +++ b/drivers/usb/serial/kobil_sct.c @@ -51,7 +51,6 @@ /* Function prototypes */ -static int kobil_attach(struct usb_serial *serial); static int kobil_port_probe(struct usb_serial_port *probe); static int kobil_port_remove(struct usb_serial_port *probe); static int kobil_open(struct tty_struct *tty, struct usb_serial_port *port); @@ -87,7 +86,7 @@ static struct usb_serial_driver kobil_device = { .description = "KOBIL USB smart card terminal", .id_table = id_table, .num_ports = 1, - .attach = kobil_attach, + .num_interrupt_out = 1, .port_probe = kobil_port_probe, .port_remove = kobil_port_remove, .ioctl = kobil_ioctl, @@ -115,16 +114,6 @@ struct kobil_private { }; -static int kobil_attach(struct usb_serial *serial) -{ - if (serial->num_interrupt_out < serial->num_ports) { - dev_err(&serial->interface->dev, "missing interrupt-out endpoint\n"); - return -ENODEV; - } - - return 0; -} - static int kobil_port_probe(struct usb_serial_port *port) { struct usb_serial *serial = port->serial; diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c index f075121c6e32..a453965f9e9a 100644 --- a/drivers/usb/serial/mos7720.c +++ b/drivers/usb/serial/mos7720.c @@ -973,11 +973,24 @@ static void mos7720_bulk_out_data_callback(struct urb *urb) tty_port_tty_wakeup(&mos7720_port->port->port); } -static int mos77xx_calc_num_ports(struct usb_serial *serial) +static int mos77xx_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { u16 product = le16_to_cpu(serial->dev->descriptor.idProduct); - if (product == MOSCHIP_DEVICE_ID_7715) + + if (product == MOSCHIP_DEVICE_ID_7715) { + /* + * The 7715 uses the first bulk in/out endpoint pair for the + * parallel port, and the second for the serial port. We swap + * the endpoint descriptors here so that the the first and + * only registered port structure uses the serial-port + * endpoints. + */ + swap(epds->bulk_in[0], epds->bulk_in[1]); + swap(epds->bulk_out[0], epds->bulk_out[1]); + return 1; + } return 2; } @@ -1395,7 +1408,7 @@ struct divisor_table_entry { /* Define table of divisors for moschip 7720 hardware * * These assume a 3.6864MHz crystal, the standard /16, and * * MCR.7 = 0. */ -static struct divisor_table_entry divisor_table[] = { +static const struct divisor_table_entry divisor_table[] = { { 50, 2304}, { 110, 1047}, /* 2094.545455 => 230450 => .0217 % over */ { 134, 857}, /* 1713.011152 => 230398.5 => .00065% under */ @@ -1675,7 +1688,6 @@ static void mos7720_set_termios(struct tty_struct *tty, struct usb_serial_port *port, struct ktermios *old_termios) { int status; - unsigned int cflag; struct usb_serial *serial; struct moschip_port *mos7720_port; @@ -1691,16 +1703,6 @@ static void mos7720_set_termios(struct tty_struct *tty, return; } - dev_dbg(&port->dev, "setting termios - ASPIRE\n"); - - cflag = tty->termios.c_cflag; - - dev_dbg(&port->dev, "%s - cflag %08x iflag %08x\n", __func__, - tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); - - dev_dbg(&port->dev, "%s - old cflag %08x old iflag %08x\n", __func__, - old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); - /* change the port settings to the new ones specified */ change_port_settings(tty, mos7720_port, old_termios); @@ -1900,54 +1902,24 @@ static int mos7720_startup(struct usb_serial *serial) u16 product; int ret_val; - if (serial->num_bulk_in < 2 || serial->num_bulk_out < 2) { - dev_err(&serial->interface->dev, "missing bulk endpoints\n"); - return -ENODEV; - } - product = le16_to_cpu(serial->dev->descriptor.idProduct); dev = serial->dev; - /* - * The 7715 uses the first bulk in/out endpoint pair for the parallel - * port, and the second for the serial port. Because the usbserial core - * assumes both pairs are serial ports, we must engage in a bit of - * subterfuge and swap the pointers for ports 0 and 1 in order to make - * port 0 point to the serial port. However, both moschip devices use a - * single interrupt-in endpoint for both ports (as mentioned a little - * further down), and this endpoint was assigned to port 0. So after - * the swap, we must copy the interrupt endpoint elements from port 1 - * (as newly assigned) to port 0, and null out port 1 pointers. - */ - if (product == MOSCHIP_DEVICE_ID_7715) { - struct usb_serial_port *tmp = serial->port[0]; - serial->port[0] = serial->port[1]; - serial->port[1] = tmp; - serial->port[0]->interrupt_in_urb = tmp->interrupt_in_urb; - serial->port[0]->interrupt_in_buffer = tmp->interrupt_in_buffer; - serial->port[0]->interrupt_in_endpointAddress = - tmp->interrupt_in_endpointAddress; - serial->port[1]->interrupt_in_urb = NULL; - serial->port[1]->interrupt_in_buffer = NULL; - - if (serial->port[0]->interrupt_in_urb) { - struct urb *urb = serial->port[0]->interrupt_in_urb; - - urb->complete = mos7715_interrupt_callback; - } - } - /* setting configuration feature to one */ usb_control_msg(serial->dev, usb_sndctrlpipe(serial->dev, 0), (__u8)0x03, 0x00, 0x01, 0x00, NULL, 0x00, 5000); -#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT if (product == MOSCHIP_DEVICE_ID_7715) { + struct urb *urb = serial->port[0]->interrupt_in_urb; + + urb->complete = mos7715_interrupt_callback; + +#ifdef CONFIG_USB_SERIAL_MOS7715_PARPORT ret_val = mos7715_parport_init(serial); if (ret_val < 0) return ret_val; - } #endif + } /* start the interrupt urb */ ret_val = usb_submit_urb(serial->port[0]->interrupt_in_urb, GFP_KERNEL); if (ret_val) { @@ -2039,6 +2011,9 @@ static struct usb_serial_driver moschip7720_2port_driver = { }, .description = "Moschip 2 port adapter", .id_table = id_table, + .num_bulk_in = 2, + .num_bulk_out = 2, + .num_interrupt_in = 1, .calc_num_ports = mos77xx_calc_num_ports, .open = mos7720_open, .close = mos7720_close, diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c index 3821c53fcee9..e8669aae14b3 100644 --- a/drivers/usb/serial/mos7840.c +++ b/drivers/usb/serial/mos7840.c @@ -1868,7 +1868,6 @@ static void mos7840_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { int status; - unsigned int cflag; struct usb_serial *serial; struct moschip_port *mos7840_port; @@ -1890,15 +1889,6 @@ static void mos7840_set_termios(struct tty_struct *tty, return; } - dev_dbg(&port->dev, "%s", "setting termios - \n"); - - cflag = tty->termios.c_cflag; - - dev_dbg(&port->dev, "%s - clfag %08x iflag %08x\n", __func__, - tty->termios.c_cflag, RELEVANT_IFLAG(tty->termios.c_iflag)); - dev_dbg(&port->dev, "%s - old clfag %08x old iflag %08x\n", __func__, - old_termios->c_cflag, RELEVANT_IFLAG(old_termios->c_iflag)); - /* change the port settings to the new ones specified */ mos7840_change_port_settings(tty, mos7840_port, old_termios); @@ -2104,26 +2094,27 @@ out: return 0; } -static int mos7840_calc_num_ports(struct usb_serial *serial) +static int mos7840_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { int device_type = (unsigned long)usb_get_serial_data(serial); - int mos7840_num_ports; + int num_ports; - mos7840_num_ports = (device_type >> 4) & 0x000F; + num_ports = (device_type >> 4) & 0x000F; - return mos7840_num_ports; -} + /* + * num_ports is currently never zero as device_type is one of + * MOSCHIP_DEVICE_ID_78{1,2,4}0. + */ + if (num_ports == 0) + return -ENODEV; -static int mos7840_attach(struct usb_serial *serial) -{ - if (serial->num_bulk_in < serial->num_ports || - serial->num_bulk_out < serial->num_ports || - serial->num_interrupt_in < 1) { + if (epds->num_bulk_in < num_ports || epds->num_bulk_out < num_ports) { dev_err(&serial->interface->dev, "missing endpoints\n"); return -ENODEV; } - return 0; + return num_ports; } static int mos7840_port_probe(struct usb_serial_port *port) @@ -2384,7 +2375,7 @@ static struct usb_serial_driver moschip7840_4port_device = { }, .description = DRIVER_DESC, .id_table = id_table, - .num_ports = 4, + .num_interrupt_in = 1, .open = mos7840_open, .close = mos7840_close, .write = mos7840_write, @@ -2401,7 +2392,6 @@ static struct usb_serial_driver moschip7840_4port_device = { .tiocmset = mos7840_tiocmset, .tiocmiwait = usb_serial_generic_tiocmiwait, .get_icount = usb_serial_generic_get_icount, - .attach = mos7840_attach, .port_probe = mos7840_port_probe, .port_remove = mos7840_port_remove, .read_bulk_callback = mos7840_bulk_in_callback, diff --git a/drivers/usb/serial/mxuport.c b/drivers/usb/serial/mxuport.c index c88215a0fa3d..3aef091fe88b 100644 --- a/drivers/usb/serial/mxuport.c +++ b/drivers/usb/serial/mxuport.c @@ -946,20 +946,39 @@ out: * Determine how many ports this device has dynamically. It will be * called after the probe() callback is called, but before attach(). */ -static int mxuport_calc_num_ports(struct usb_serial *serial) +static int mxuport_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { unsigned long features = (unsigned long)usb_get_serial_data(serial); + int num_ports; + int i; - if (features & MX_UPORT_2_PORT) - return 2; - if (features & MX_UPORT_4_PORT) - return 4; - if (features & MX_UPORT_8_PORT) - return 8; - if (features & MX_UPORT_16_PORT) - return 16; + if (features & MX_UPORT_2_PORT) { + num_ports = 2; + } else if (features & MX_UPORT_4_PORT) { + num_ports = 4; + } else if (features & MX_UPORT_8_PORT) { + num_ports = 8; + } else if (features & MX_UPORT_16_PORT) { + num_ports = 16; + } else { + dev_warn(&serial->interface->dev, + "unknown device, assuming two ports\n"); + num_ports = 2; + } - return 0; + /* + * Setup bulk-out endpoint multiplexing. All ports share the same + * bulk-out endpoint. + */ + BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_out) < 16); + + for (i = 1; i < num_ports; ++i) + epds->bulk_out[i] = epds->bulk_out[0]; + + epds->num_bulk_out = num_ports; + + return num_ports; } /* Get the version of the firmware currently running. */ @@ -1142,102 +1161,11 @@ static int mxuport_port_probe(struct usb_serial_port *port) port->port_number); } -static int mxuport_alloc_write_urb(struct usb_serial *serial, - struct usb_serial_port *port, - struct usb_serial_port *port0, - int j) -{ - struct usb_device *dev = interface_to_usbdev(serial->interface); - - set_bit(j, &port->write_urbs_free); - port->write_urbs[j] = usb_alloc_urb(0, GFP_KERNEL); - if (!port->write_urbs[j]) - return -ENOMEM; - - port->bulk_out_buffers[j] = kmalloc(port0->bulk_out_size, GFP_KERNEL); - if (!port->bulk_out_buffers[j]) - return -ENOMEM; - - usb_fill_bulk_urb(port->write_urbs[j], dev, - usb_sndbulkpipe(dev, port->bulk_out_endpointAddress), - port->bulk_out_buffers[j], - port->bulk_out_size, - serial->type->write_bulk_callback, - port); - return 0; -} - - -static int mxuport_alloc_write_urbs(struct usb_serial *serial, - struct usb_serial_port *port, - struct usb_serial_port *port0) -{ - int j; - int ret; - - for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) { - ret = mxuport_alloc_write_urb(serial, port, port0, j); - if (ret) - return ret; - } - return 0; -} - - static int mxuport_attach(struct usb_serial *serial) { struct usb_serial_port *port0 = serial->port[0]; struct usb_serial_port *port1 = serial->port[1]; - struct usb_serial_port *port; int err; - int i; - int j; - - /* - * Throw away all but the first allocated write URBs so we can - * set them up again to fit the multiplexing scheme. - */ - for (i = 1; i < serial->num_bulk_out; ++i) { - port = serial->port[i]; - for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) { - usb_free_urb(port->write_urbs[j]); - kfree(port->bulk_out_buffers[j]); - port->write_urbs[j] = NULL; - port->bulk_out_buffers[j] = NULL; - } - port->write_urbs_free = 0; - } - - /* - * All write data is sent over the first bulk out endpoint, - * with an added header to indicate the port. Allocate URBs - * for each port to the first bulk out endpoint. - */ - for (i = 1; i < serial->num_ports; ++i) { - port = serial->port[i]; - port->bulk_out_size = port0->bulk_out_size; - port->bulk_out_endpointAddress = - port0->bulk_out_endpointAddress; - - err = mxuport_alloc_write_urbs(serial, port, port0); - if (err) - return err; - - port->write_urb = port->write_urbs[0]; - port->bulk_out_buffer = port->bulk_out_buffers[0]; - - /* - * Ensure each port has a fifo. The framework only - * allocates a fifo to ports with a bulk out endpoint, - * where as we need one for every port. - */ - if (!kfifo_initialized(&port->write_fifo)) { - err = kfifo_alloc(&port->write_fifo, PAGE_SIZE, - GFP_KERNEL); - if (err) - return err; - } - } /* * All data from the ports is received on the first bulk in @@ -1366,7 +1294,8 @@ static struct usb_serial_driver mxuport_device = { }, .description = "MOXA UPort", .id_table = mxuport_idtable, - .num_ports = 0, + .num_bulk_in = 2, + .num_bulk_out = 1, .probe = mxuport_probe, .port_probe = mxuport_port_probe, .attach = mxuport_attach, diff --git a/drivers/usb/serial/omninet.c b/drivers/usb/serial/omninet.c index dd706953b466..efcd7feed6f4 100644 --- a/drivers/usb/serial/omninet.c +++ b/drivers/usb/serial/omninet.c @@ -1,6 +1,8 @@ /* * USB ZyXEL omni.net LCD PLUS driver * + * Copyright (C) 2013,2017 Johan Hovold <johan@kernel.org> + * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License version * 2 as published by the Free Software Foundation. @@ -32,12 +34,10 @@ /* function prototypes */ static void omninet_process_read_urb(struct urb *urb); -static void omninet_write_bulk_callback(struct urb *urb); -static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count); -static int omninet_write_room(struct tty_struct *tty); -static void omninet_disconnect(struct usb_serial *serial); -static int omninet_attach(struct usb_serial *serial); +static int omninet_prepare_write_buffer(struct usb_serial_port *port, + void *buf, size_t count); +static int omninet_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds); static int omninet_port_probe(struct usb_serial_port *port); static int omninet_port_remove(struct usb_serial_port *port); @@ -55,15 +55,12 @@ static struct usb_serial_driver zyxel_omninet_device = { }, .description = "ZyXEL - omni.net lcd plus usb", .id_table = id_table, - .num_ports = 1, - .attach = omninet_attach, + .num_bulk_out = 2, + .calc_num_ports = omninet_calc_num_ports, .port_probe = omninet_port_probe, .port_remove = omninet_port_remove, - .write = omninet_write, - .write_room = omninet_write_room, - .write_bulk_callback = omninet_write_bulk_callback, .process_read_urb = omninet_process_read_urb, - .disconnect = omninet_disconnect, + .prepare_write_buffer = omninet_prepare_write_buffer, }; static struct usb_serial_driver * const serial_drivers[] = { @@ -104,15 +101,14 @@ struct omninet_data { __u8 od_outseq; /* Sequence number for bulk_out URBs */ }; -static int omninet_attach(struct usb_serial *serial) +static int omninet_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { - /* The second bulk-out endpoint is used for writing. */ - if (serial->num_bulk_out < 2) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } + /* We need only the second bulk-out for our single-port device. */ + epds->bulk_out[0] = epds->bulk_out[1]; + epds->num_bulk_out = 1; - return 0; + return 1; } static int omninet_port_probe(struct usb_serial_port *port) @@ -159,96 +155,24 @@ static void omninet_process_read_urb(struct urb *urb) tty_flip_buffer_push(&port->port); } -static int omninet_write(struct tty_struct *tty, struct usb_serial_port *port, - const unsigned char *buf, int count) +static int omninet_prepare_write_buffer(struct usb_serial_port *port, + void *buf, size_t count) { - struct usb_serial *serial = port->serial; - struct usb_serial_port *wport = serial->port[1]; - struct omninet_data *od = usb_get_serial_port_data(port); - struct omninet_header *header = (struct omninet_header *) - wport->write_urb->transfer_buffer; - - int result; - - if (count == 0) { - dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__); - return 0; - } - - if (!test_and_clear_bit(0, &port->write_urbs_free)) { - dev_dbg(&port->dev, "%s - already writing\n", __func__); - return 0; - } - - count = (count > OMNINET_PAYLOADSIZE) ? OMNINET_PAYLOADSIZE : count; - - memcpy(wport->write_urb->transfer_buffer + OMNINET_HEADERLEN, - buf, count); - - usb_serial_debug_data(&port->dev, __func__, count, - wport->write_urb->transfer_buffer); - - header->oh_seq = od->od_outseq++; - header->oh_len = count; - header->oh_xxx = 0x03; - header->oh_pad = 0x00; - - /* send the data out the bulk port, always 64 bytes */ - wport->write_urb->transfer_buffer_length = OMNINET_BULKOUTSIZE; - - result = usb_submit_urb(wport->write_urb, GFP_ATOMIC); - if (result) { - set_bit(0, &wport->write_urbs_free); - dev_err_console(port, - "%s - failed submitting write urb, error %d\n", - __func__, result); - } else - result = count; - - return result; -} + struct omninet_header *header = buf; + count = min_t(size_t, count, OMNINET_PAYLOADSIZE); -static int omninet_write_room(struct tty_struct *tty) -{ - struct usb_serial_port *port = tty->driver_data; - struct usb_serial *serial = port->serial; - struct usb_serial_port *wport = serial->port[1]; - - int room = 0; /* Default: no room */ - - if (test_bit(0, &wport->write_urbs_free)) - room = wport->bulk_out_size - OMNINET_HEADERLEN; - - dev_dbg(&port->dev, "%s - returns %d\n", __func__, room); - - return room; -} - -static void omninet_write_bulk_callback(struct urb *urb) -{ -/* struct omninet_header *header = (struct omninet_header *) - urb->transfer_buffer; */ - struct usb_serial_port *port = urb->context; - int status = urb->status; - - set_bit(0, &port->write_urbs_free); - if (status) { - dev_dbg(&port->dev, "%s - nonzero write bulk status received: %d\n", - __func__, status); - return; - } + count = kfifo_out_locked(&port->write_fifo, buf + OMNINET_HEADERLEN, + count, &port->lock); - usb_serial_port_softint(port); -} - - -static void omninet_disconnect(struct usb_serial *serial) -{ - struct usb_serial_port *wport = serial->port[1]; + header->oh_seq = od->od_outseq++; + header->oh_len = count; + header->oh_xxx = 0x03; + header->oh_pad = 0x00; - usb_kill_urb(wport->write_urb); + /* always 64 bytes */ + return OMNINET_BULKOUTSIZE; } module_usb_serial_driver(serial_drivers, id_table); diff --git a/drivers/usb/serial/opticon.c b/drivers/usb/serial/opticon.c index 3937b9c3cc69..58657d64678b 100644 --- a/drivers/usb/serial/opticon.c +++ b/drivers/usb/serial/opticon.c @@ -367,16 +367,6 @@ static int opticon_ioctl(struct tty_struct *tty, return -ENOIOCTLCMD; } -static int opticon_startup(struct usb_serial *serial) -{ - if (!serial->num_bulk_in) { - dev_err(&serial->dev->dev, "no bulk in endpoint\n"); - return -ENODEV; - } - - return 0; -} - static int opticon_port_probe(struct usb_serial_port *port) { struct opticon_private *priv; @@ -408,8 +398,8 @@ static struct usb_serial_driver opticon_device = { }, .id_table = id_table, .num_ports = 1, + .num_bulk_in = 1, .bulk_in_size = 256, - .attach = opticon_startup, .port_probe = opticon_port_probe, .port_remove = opticon_port_remove, .open = opticon_open, diff --git a/drivers/usb/serial/oti6858.c b/drivers/usb/serial/oti6858.c index b8bf52bf7a94..b11eead469ee 100644 --- a/drivers/usb/serial/oti6858.c +++ b/drivers/usb/serial/oti6858.c @@ -134,7 +134,6 @@ static int oti6858_chars_in_buffer(struct tty_struct *tty); static int oti6858_tiocmget(struct tty_struct *tty); static int oti6858_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); -static int oti6858_attach(struct usb_serial *serial); static int oti6858_port_probe(struct usb_serial_port *port); static int oti6858_port_remove(struct usb_serial_port *port); @@ -146,6 +145,9 @@ static struct usb_serial_driver oti6858_device = { }, .id_table = id_table, .num_ports = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 1, .open = oti6858_open, .close = oti6858_close, .write = oti6858_write, @@ -159,7 +161,6 @@ static struct usb_serial_driver oti6858_device = { .write_bulk_callback = oti6858_write_bulk_callback, .write_room = oti6858_write_room, .chars_in_buffer = oti6858_chars_in_buffer, - .attach = oti6858_attach, .port_probe = oti6858_port_probe, .port_remove = oti6858_port_remove, }; @@ -326,20 +327,6 @@ static void send_data(struct work_struct *work) usb_serial_port_softint(port); } -static int oti6858_attach(struct usb_serial *serial) -{ - unsigned char num_ports = serial->num_ports; - - if (serial->num_bulk_in < num_ports || - serial->num_bulk_out < num_ports || - serial->num_interrupt_in < num_ports) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } - - return 0; -} - static int oti6858_port_probe(struct usb_serial_port *port) { struct oti6858_private *priv; diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index ca69eb42071b..c9ebefd8f35f 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -33,9 +33,11 @@ #define PL2303_QUIRK_UART_STATE_IDX0 BIT(0) #define PL2303_QUIRK_LEGACY BIT(1) +#define PL2303_QUIRK_ENDPOINT_HACK BIT(2) static const struct usb_device_id id_table[] = { - { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID) }, + { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID), + .driver_info = PL2303_QUIRK_ENDPOINT_HACK }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ2) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_DCU11) }, { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_RSAQ3) }, @@ -48,7 +50,8 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(PL2303_VENDOR_ID, PL2303_PRODUCT_ID_ZTEK) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID) }, { USB_DEVICE(IODATA_VENDOR_ID, IODATA_PRODUCT_ID_RSAQ5) }, - { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID) }, + { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID), + .driver_info = PL2303_QUIRK_ENDPOINT_HACK }, { USB_DEVICE(ATEN_VENDOR_ID, ATEN_PRODUCT_ID2) }, { USB_DEVICE(ATEN_VENDOR_ID2, ATEN_PRODUCT_ID) }, { USB_DEVICE(ELCOM_VENDOR_ID, ELCOM_PRODUCT_ID) }, @@ -68,7 +71,8 @@ static const struct usb_device_id id_table[] = { .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_X75), .driver_info = PL2303_QUIRK_UART_STATE_IDX0 }, - { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81) }, + { USB_DEVICE(SIEMENS_VENDOR_ID, SIEMENS_PRODUCT_ID_EF81), + .driver_info = PL2303_QUIRK_ENDPOINT_HACK }, { USB_DEVICE(BENQ_VENDOR_ID, BENQ_PRODUCT_ID_S81) }, /* Benq/Siemens S81 */ { USB_DEVICE(SYNTECH_VENDOR_ID, SYNTECH_PRODUCT_ID) }, { USB_DEVICE(NOKIA_CA42_VENDOR_ID, NOKIA_CA42_PRODUCT_ID) }, @@ -78,7 +82,8 @@ static const struct usb_device_id id_table[] = { { USB_DEVICE(SPEEDDRAGON_VENDOR_ID, SPEEDDRAGON_PRODUCT_ID) }, { USB_DEVICE(DATAPILOT_U2_VENDOR_ID, DATAPILOT_U2_PRODUCT_ID) }, { USB_DEVICE(BELKIN_VENDOR_ID, BELKIN_PRODUCT_ID) }, - { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID) }, + { USB_DEVICE(ALCOR_VENDOR_ID, ALCOR_PRODUCT_ID), + .driver_info = PL2303_QUIRK_ENDPOINT_HACK }, { USB_DEVICE(WS002IN_VENDOR_ID, WS002IN_PRODUCT_ID) }, { USB_DEVICE(COREGA_VENDOR_ID, COREGA_PRODUCT_ID) }, { USB_DEVICE(YCCABLE_VENDOR_ID, YCCABLE_PRODUCT_ID) }, @@ -218,20 +223,68 @@ static int pl2303_probe(struct usb_serial *serial, return 0; } +/* + * Use interrupt endpoint from first interface if available. + * + * This is needed due to the looney way its endpoints are set up. + */ +static int pl2303_endpoint_hack(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + struct usb_interface *interface = serial->interface; + struct usb_device *dev = serial->dev; + struct device *ddev = &interface->dev; + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *endpoint; + unsigned int i; + + if (interface == dev->actconfig->interface[0]) + return 0; + + /* check out the endpoints of the other interface */ + iface_desc = dev->actconfig->interface[0]->cur_altsetting; + + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { + endpoint = &iface_desc->endpoint[i].desc; + + if (!usb_endpoint_is_int_in(endpoint)) + continue; + + dev_dbg(ddev, "found interrupt in on separate interface\n"); + if (epds->num_interrupt_in < ARRAY_SIZE(epds->interrupt_in)) + epds->interrupt_in[epds->num_interrupt_in++] = endpoint; + } + + return 0; +} + +static int pl2303_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + unsigned long quirks = (unsigned long)usb_get_serial_data(serial); + struct device *dev = &serial->interface->dev; + int ret; + + if (quirks & PL2303_QUIRK_ENDPOINT_HACK) { + ret = pl2303_endpoint_hack(serial, epds); + if (ret) + return ret; + } + + if (epds->num_interrupt_in < 1) { + dev_err(dev, "required interrupt-in endpoint missing\n"); + return -ENODEV; + } + + return 1; +} + static int pl2303_startup(struct usb_serial *serial) { struct pl2303_serial_private *spriv; - unsigned char num_ports = serial->num_ports; enum pl2303_type type = TYPE_01; unsigned char *buf; - if (serial->num_bulk_in < num_ports || - serial->num_bulk_out < num_ports || - serial->num_interrupt_in < num_ports) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } - spriv = kzalloc(sizeof(*spriv), GFP_KERNEL); if (!spriv) return -ENOMEM; @@ -938,7 +991,9 @@ static struct usb_serial_driver pl2303_device = { .name = "pl2303", }, .id_table = id_table, - .num_ports = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, + .num_interrupt_in = 0, /* see pl2303_calc_num_ports */ .bulk_in_size = 256, .bulk_out_size = 256, .open = pl2303_open, @@ -954,6 +1009,7 @@ static struct usb_serial_driver pl2303_device = { .process_read_urb = pl2303_process_read_urb, .read_int_callback = pl2303_read_int_callback, .probe = pl2303_probe, + .calc_num_ports = pl2303_calc_num_ports, .attach = pl2303_startup, .release = pl2303_release, .port_probe = pl2303_port_probe, diff --git a/drivers/usb/serial/quatech2.c b/drivers/usb/serial/quatech2.c index fdbb904d153f..60e17d1444c3 100644 --- a/drivers/usb/serial/quatech2.c +++ b/drivers/usb/serial/quatech2.c @@ -246,7 +246,8 @@ static inline int update_mctrl(struct qt2_port_private *port_priv, return status; } -static int qt2_calc_num_ports(struct usb_serial *serial) +static int qt2_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { struct qt2_device_detail d; int i; @@ -600,7 +601,6 @@ static void qt2_process_read_urb(struct urb *urb) escapeflag = true; break; case QT2_CONTROL_ESCAPE: - tty_buffer_request_room(&port->port, 2); tty_insert_flip_string(&port->port, ch, 2); i += 2; escapeflag = true; @@ -615,8 +615,7 @@ static void qt2_process_read_urb(struct urb *urb) continue; } - tty_buffer_request_room(&port->port, 1); - tty_insert_flip_string(&port->port, ch, 1); + tty_insert_flip_char(&port->port, *ch, TTY_NORMAL); } tty_flip_buffer_push(&port->port); diff --git a/drivers/usb/serial/sierra.c b/drivers/usb/serial/sierra.c index 465e851b2815..4c4ac4705ac0 100644 --- a/drivers/usb/serial/sierra.c +++ b/drivers/usb/serial/sierra.c @@ -85,7 +85,8 @@ static int sierra_vsc_set_nmea(struct usb_device *udev, __u16 enable) USB_CTRL_SET_TIMEOUT); /* int timeout */ } -static int sierra_calc_num_ports(struct usb_serial *serial) +static int sierra_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { int num_ports = 0; u8 ifnum, numendpoints; diff --git a/drivers/usb/serial/spcp8x5.c b/drivers/usb/serial/spcp8x5.c index ddfd787c461c..5167b6564c8b 100644 --- a/drivers/usb/serial/spcp8x5.c +++ b/drivers/usb/serial/spcp8x5.c @@ -154,19 +154,6 @@ static int spcp8x5_probe(struct usb_serial *serial, return 0; } -static int spcp8x5_attach(struct usb_serial *serial) -{ - unsigned char num_ports = serial->num_ports; - - if (serial->num_bulk_in < num_ports || - serial->num_bulk_out < num_ports) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } - - return 0; -} - static int spcp8x5_port_probe(struct usb_serial_port *port) { const struct usb_device_id *id = usb_get_serial_data(port->serial); @@ -488,6 +475,8 @@ static struct usb_serial_driver spcp8x5_device = { }, .id_table = id_table, .num_ports = 1, + .num_bulk_in = 1, + .num_bulk_out = 1, .open = spcp8x5_open, .dtr_rts = spcp8x5_dtr_rts, .carrier_raised = spcp8x5_carrier_raised, @@ -496,7 +485,6 @@ static struct usb_serial_driver spcp8x5_device = { .tiocmget = spcp8x5_tiocmget, .tiocmset = spcp8x5_tiocmset, .probe = spcp8x5_probe, - .attach = spcp8x5_attach, .port_probe = spcp8x5_port_probe, .port_remove = spcp8x5_port_remove, }; diff --git a/drivers/usb/serial/symbolserial.c b/drivers/usb/serial/symbolserial.c index 37f3ad15ed06..0d1727232d0c 100644 --- a/drivers/usb/serial/symbolserial.c +++ b/drivers/usb/serial/symbolserial.c @@ -147,16 +147,6 @@ static void symbol_unthrottle(struct tty_struct *tty) } } -static int symbol_startup(struct usb_serial *serial) -{ - if (!serial->num_interrupt_in) { - dev_err(&serial->dev->dev, "no interrupt-in endpoint\n"); - return -ENODEV; - } - - return 0; -} - static int symbol_port_probe(struct usb_serial_port *port) { struct symbol_private *priv; @@ -188,7 +178,7 @@ static struct usb_serial_driver symbol_device = { }, .id_table = id_table, .num_ports = 1, - .attach = symbol_startup, + .num_interrupt_in = 1, .port_probe = symbol_port_probe, .port_remove = symbol_port_remove, .open = symbol_open, diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c index 3107bf5d1c96..8fc3854e5e69 100644 --- a/drivers/usb/serial/ti_usb_3410_5052.c +++ b/drivers/usb/serial/ti_usb_3410_5052.c @@ -427,6 +427,7 @@ static struct usb_serial_driver ti_1port_device = { .description = "TI USB 3410 1 port adapter", .id_table = ti_id_table_3410, .num_ports = 1, + .num_bulk_out = 1, .attach = ti_startup, .release = ti_release, .port_probe = ti_port_probe, @@ -459,6 +460,7 @@ static struct usb_serial_driver ti_2port_device = { .description = "TI USB 5052 2 port adapter", .id_table = ti_id_table_5052, .num_ports = 2, + .num_bulk_out = 1, .attach = ti_startup, .release = ti_release, .port_probe = ti_port_probe, @@ -927,7 +929,6 @@ static void ti_set_termios(struct tty_struct *tty, { struct ti_port *tport = usb_get_serial_port_data(port); struct ti_uart_config *config; - tcflag_t cflag, iflag; int baud; int status; int port_number = port->port_number; @@ -935,13 +936,6 @@ static void ti_set_termios(struct tty_struct *tty, u16 wbaudrate; u16 wflags = 0; - cflag = tty->termios.c_cflag; - iflag = tty->termios.c_iflag; - - dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag); - dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__, - old_termios->c_cflag, old_termios->c_iflag); - config = kmalloc(sizeof(*config), GFP_KERNEL); if (!config) return; diff --git a/drivers/usb/serial/usb-serial.c b/drivers/usb/serial/usb-serial.c index 4a037b4a79cf..c7ca95f64edc 100644 --- a/drivers/usb/serial/usb-serial.c +++ b/drivers/usb/serial/usb-serial.c @@ -38,7 +38,6 @@ #include <linux/usb/serial.h> #include <linux/kfifo.h> #include <linux/idr.h> -#include "pl2303.h" #define DRIVER_AUTHOR "Greg Kroah-Hartman <gregkh@linuxfoundation.org>" #define DRIVER_DESC "USB Serial Driver core" @@ -710,6 +709,39 @@ static const struct tty_port_operations serial_port_ops = { .shutdown = serial_port_shutdown, }; +static void find_endpoints(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + struct device *dev = &serial->interface->dev; + struct usb_host_interface *iface_desc; + struct usb_endpoint_descriptor *epd; + unsigned int i; + + BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_in) < USB_MAXENDPOINTS / 2); + BUILD_BUG_ON(ARRAY_SIZE(epds->bulk_out) < USB_MAXENDPOINTS / 2); + BUILD_BUG_ON(ARRAY_SIZE(epds->interrupt_in) < USB_MAXENDPOINTS / 2); + BUILD_BUG_ON(ARRAY_SIZE(epds->interrupt_out) < USB_MAXENDPOINTS / 2); + + iface_desc = serial->interface->cur_altsetting; + for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { + epd = &iface_desc->endpoint[i].desc; + + if (usb_endpoint_is_bulk_in(epd)) { + dev_dbg(dev, "found bulk in on endpoint %u\n", i); + epds->bulk_in[epds->num_bulk_in++] = epd; + } else if (usb_endpoint_is_bulk_out(epd)) { + dev_dbg(dev, "found bulk out on endpoint %u\n", i); + epds->bulk_out[epds->num_bulk_out++] = epd; + } else if (usb_endpoint_is_int_in(epd)) { + dev_dbg(dev, "found interrupt in on endpoint %u\n", i); + epds->interrupt_in[epds->num_interrupt_in++] = epd; + } else if (usb_endpoint_is_int_out(epd)) { + dev_dbg(dev, "found interrupt out on endpoint %u\n", i); + epds->interrupt_out[epds->num_interrupt_out++] = epd; + } + } +} + static int usb_serial_probe(struct usb_interface *interface, const struct usb_device_id *id) { @@ -717,23 +749,15 @@ static int usb_serial_probe(struct usb_interface *interface, struct usb_device *dev = interface_to_usbdev(interface); struct usb_serial *serial = NULL; struct usb_serial_port *port; - struct usb_host_interface *iface_desc; struct usb_endpoint_descriptor *endpoint; - struct usb_endpoint_descriptor *interrupt_in_endpoint[MAX_NUM_PORTS]; - struct usb_endpoint_descriptor *interrupt_out_endpoint[MAX_NUM_PORTS]; - struct usb_endpoint_descriptor *bulk_in_endpoint[MAX_NUM_PORTS]; - struct usb_endpoint_descriptor *bulk_out_endpoint[MAX_NUM_PORTS]; + struct usb_serial_endpoints *epds; struct usb_serial_driver *type = NULL; int retval; int buffer_size; int i; int j; - int num_interrupt_in = 0; - int num_interrupt_out = 0; - int num_bulk_in = 0; - int num_bulk_out = 0; int num_ports = 0; - int max_endpoints; + unsigned char max_endpoints; mutex_lock(&table_lock); type = search_serial_device(interface); @@ -752,8 +776,8 @@ static int usb_serial_probe(struct usb_interface *interface, serial = create_serial(dev, interface, type); if (!serial) { - module_put(type->driver.owner); - return -ENOMEM; + retval = -ENOMEM; + goto err_put_module; } /* if this device type has a probe function, call it */ @@ -765,129 +789,48 @@ static int usb_serial_probe(struct usb_interface *interface, if (retval) { dev_dbg(ddev, "sub driver rejected device\n"); - usb_serial_put(serial); - module_put(type->driver.owner); - return retval; + goto err_put_serial; } } /* descriptor matches, let's find the endpoints needed */ - /* check out the endpoints */ - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_bulk_in(endpoint)) { - /* we found a bulk in endpoint */ - dev_dbg(ddev, "found bulk in on endpoint %d\n", i); - if (num_bulk_in < MAX_NUM_PORTS) { - bulk_in_endpoint[num_bulk_in] = endpoint; - ++num_bulk_in; - } - } - - if (usb_endpoint_is_bulk_out(endpoint)) { - /* we found a bulk out endpoint */ - dev_dbg(ddev, "found bulk out on endpoint %d\n", i); - if (num_bulk_out < MAX_NUM_PORTS) { - bulk_out_endpoint[num_bulk_out] = endpoint; - ++num_bulk_out; - } - } - - if (usb_endpoint_is_int_in(endpoint)) { - /* we found a interrupt in endpoint */ - dev_dbg(ddev, "found interrupt in on endpoint %d\n", i); - if (num_interrupt_in < MAX_NUM_PORTS) { - interrupt_in_endpoint[num_interrupt_in] = - endpoint; - ++num_interrupt_in; - } - } - - if (usb_endpoint_is_int_out(endpoint)) { - /* we found an interrupt out endpoint */ - dev_dbg(ddev, "found interrupt out on endpoint %d\n", i); - if (num_interrupt_out < MAX_NUM_PORTS) { - interrupt_out_endpoint[num_interrupt_out] = - endpoint; - ++num_interrupt_out; - } - } + epds = kzalloc(sizeof(*epds), GFP_KERNEL); + if (!epds) { + retval = -ENOMEM; + goto err_put_serial; } -#if IS_ENABLED(CONFIG_USB_SERIAL_PL2303) - /* BEGIN HORRIBLE HACK FOR PL2303 */ - /* this is needed due to the looney way its endpoints are set up */ - if (((le16_to_cpu(dev->descriptor.idVendor) == PL2303_VENDOR_ID) && - (le16_to_cpu(dev->descriptor.idProduct) == PL2303_PRODUCT_ID)) || - ((le16_to_cpu(dev->descriptor.idVendor) == ATEN_VENDOR_ID) && - (le16_to_cpu(dev->descriptor.idProduct) == ATEN_PRODUCT_ID)) || - ((le16_to_cpu(dev->descriptor.idVendor) == ALCOR_VENDOR_ID) && - (le16_to_cpu(dev->descriptor.idProduct) == ALCOR_PRODUCT_ID)) || - ((le16_to_cpu(dev->descriptor.idVendor) == SIEMENS_VENDOR_ID) && - (le16_to_cpu(dev->descriptor.idProduct) == SIEMENS_PRODUCT_ID_EF81))) { - if (interface != dev->actconfig->interface[0]) { - /* check out the endpoints of the other interface*/ - iface_desc = dev->actconfig->interface[0]->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - if (usb_endpoint_is_int_in(endpoint)) { - /* we found a interrupt in endpoint */ - dev_dbg(ddev, "found interrupt in for Prolific device on separate interface\n"); - if (num_interrupt_in < MAX_NUM_PORTS) { - interrupt_in_endpoint[num_interrupt_in] = endpoint; - ++num_interrupt_in; - } - } - } - } + find_endpoints(serial, epds); - /* Now make sure the PL-2303 is configured correctly. - * If not, give up now and hope this hack will work - * properly during a later invocation of usb_serial_probe - */ - if (num_bulk_in == 0 || num_bulk_out == 0) { - dev_info(ddev, "PL-2303 hack: descriptors matched but endpoints did not\n"); - usb_serial_put(serial); - module_put(type->driver.owner); - return -ENODEV; - } - } - /* END HORRIBLE HACK FOR PL2303 */ -#endif - -#ifdef CONFIG_USB_SERIAL_GENERIC - if (type == &usb_serial_generic_device) { - num_ports = num_bulk_out; - if (num_ports == 0) { - dev_err(ddev, "Generic device with no bulk out, not allowed.\n"); - usb_serial_put(serial); - module_put(type->driver.owner); - return -EIO; - } - dev_info(ddev, "The \"generic\" usb-serial driver is only for testing and one-off prototypes.\n"); - dev_info(ddev, "Tell linux-usb@vger.kernel.org to add your device to a proper driver.\n"); + if (epds->num_bulk_in < type->num_bulk_in || + epds->num_bulk_out < type->num_bulk_out || + epds->num_interrupt_in < type->num_interrupt_in || + epds->num_interrupt_out < type->num_interrupt_out) { + dev_err(ddev, "required endpoints missing\n"); + retval = -ENODEV; + goto err_free_epds; } -#endif - if (!num_ports) { - /* if this device type has a calc_num_ports function, call it */ - if (type->calc_num_ports) - num_ports = type->calc_num_ports(serial); - if (!num_ports) - num_ports = type->num_ports; + + if (type->calc_num_ports) { + retval = type->calc_num_ports(serial, epds); + if (retval < 0) + goto err_free_epds; + num_ports = retval; } + if (!num_ports) + num_ports = type->num_ports; + if (num_ports > MAX_NUM_PORTS) { dev_warn(ddev, "too many ports requested: %d\n", num_ports); num_ports = MAX_NUM_PORTS; } - serial->num_ports = num_ports; - serial->num_bulk_in = num_bulk_in; - serial->num_bulk_out = num_bulk_out; - serial->num_interrupt_in = num_interrupt_in; - serial->num_interrupt_out = num_interrupt_out; + serial->num_ports = (unsigned char)num_ports; + serial->num_bulk_in = epds->num_bulk_in; + serial->num_bulk_out = epds->num_bulk_out; + serial->num_interrupt_in = epds->num_interrupt_in; + serial->num_interrupt_out = epds->num_interrupt_out; /* found all that we need */ dev_info(ddev, "%s converter detected\n", type->description); @@ -895,10 +838,10 @@ static int usb_serial_probe(struct usb_interface *interface, /* create our ports, we need as many as the max endpoints */ /* we don't use num_ports here because some devices have more endpoint pairs than ports */ - max_endpoints = max(num_bulk_in, num_bulk_out); - max_endpoints = max(max_endpoints, num_interrupt_in); - max_endpoints = max(max_endpoints, num_interrupt_out); - max_endpoints = max(max_endpoints, (int)serial->num_ports); + max_endpoints = max(epds->num_bulk_in, epds->num_bulk_out); + max_endpoints = max(max_endpoints, epds->num_interrupt_in); + max_endpoints = max(max_endpoints, epds->num_interrupt_out); + max_endpoints = max(max_endpoints, serial->num_ports); serial->num_port_pointers = max_endpoints; dev_dbg(ddev, "setting up %d port structure(s)\n", max_endpoints); @@ -923,8 +866,8 @@ static int usb_serial_probe(struct usb_interface *interface, } /* set up the endpoint information */ - for (i = 0; i < num_bulk_in; ++i) { - endpoint = bulk_in_endpoint[i]; + for (i = 0; i < epds->num_bulk_in; ++i) { + endpoint = epds->bulk_in[i]; port = serial->port[i]; buffer_size = max_t(int, serial->type->bulk_in_size, usb_endpoint_maxp(endpoint)); @@ -952,8 +895,8 @@ static int usb_serial_probe(struct usb_interface *interface, port->bulk_in_buffer = port->bulk_in_buffers[0]; } - for (i = 0; i < num_bulk_out; ++i) { - endpoint = bulk_out_endpoint[i]; + for (i = 0; i < epds->num_bulk_out; ++i) { + endpoint = epds->bulk_out[i]; port = serial->port[i]; if (kfifo_alloc(&port->write_fifo, PAGE_SIZE, GFP_KERNEL)) goto probe_error; @@ -985,8 +928,8 @@ static int usb_serial_probe(struct usb_interface *interface, } if (serial->type->read_int_callback) { - for (i = 0; i < num_interrupt_in; ++i) { - endpoint = interrupt_in_endpoint[i]; + for (i = 0; i < epds->num_interrupt_in; ++i) { + endpoint = epds->interrupt_in[i]; port = serial->port[i]; port->interrupt_in_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->interrupt_in_urb) @@ -1005,13 +948,13 @@ static int usb_serial_probe(struct usb_interface *interface, serial->type->read_int_callback, port, endpoint->bInterval); } - } else if (num_interrupt_in) { + } else if (epds->num_interrupt_in) { dev_dbg(ddev, "The device claims to support interrupt in transfers, but read_int_callback is not defined\n"); } if (serial->type->write_int_callback) { - for (i = 0; i < num_interrupt_out; ++i) { - endpoint = interrupt_out_endpoint[i]; + for (i = 0; i < epds->num_interrupt_out; ++i) { + endpoint = epds->interrupt_out[i]; port = serial->port[i]; port->interrupt_out_urb = usb_alloc_urb(0, GFP_KERNEL); if (!port->interrupt_out_urb) @@ -1031,7 +974,7 @@ static int usb_serial_probe(struct usb_interface *interface, serial->type->write_int_callback, port, endpoint->bInterval); } - } else if (num_interrupt_out) { + } else if (epds->num_interrupt_out) { dev_dbg(ddev, "The device claims to support interrupt out transfers, but write_int_callback is not defined\n"); } @@ -1053,12 +996,6 @@ static int usb_serial_probe(struct usb_interface *interface, serial->attached = 1; } - /* Avoid race with tty_open and serial_install by setting the - * disconnected flag and not clearing it until all ports have been - * registered. - */ - serial->disconnected = 1; - if (allocate_minors(serial, num_ports)) { dev_err(ddev, "No more free serial minor numbers\n"); goto probe_error; @@ -1076,18 +1013,23 @@ static int usb_serial_probe(struct usb_interface *interface, dev_err(ddev, "Error registering port device, continuing\n"); } - serial->disconnected = 0; - if (num_ports > 0) usb_serial_console_init(serial->port[0]->minor); exit: + kfree(epds); module_put(type->driver.owner); return 0; probe_error: + retval = -EIO; +err_free_epds: + kfree(epds); +err_put_serial: usb_serial_put(serial); +err_put_module: module_put(type->driver.owner); - return -EIO; + + return retval; } static void usb_serial_disconnect(struct usb_interface *interface) diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c index 92f7e5c21162..12f4c5a91e62 100644 --- a/drivers/usb/serial/usb_debug.c +++ b/drivers/usb/serial/usb_debug.c @@ -17,7 +17,7 @@ #define USB_DEBUG_MAX_PACKET_SIZE 8 #define USB_DEBUG_BRK_SIZE 8 -static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { +static const char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = { 0x00, 0xff, 0x01, diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 337a0be89fcf..9f3317a940ef 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -40,11 +40,12 @@ static int visor_open(struct tty_struct *tty, struct usb_serial_port *port); static void visor_close(struct usb_serial_port *port); static int visor_probe(struct usb_serial *serial, const struct usb_device_id *id); -static int visor_calc_num_ports(struct usb_serial *serial); +static int visor_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds); +static int clie_5_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds); static void visor_read_int_callback(struct urb *urb); static int clie_3_5_startup(struct usb_serial *serial); -static int treo_attach(struct usb_serial *serial); -static int clie_5_attach(struct usb_serial *serial); static int palm_os_3_probe(struct usb_serial *serial, const struct usb_device_id *id); static int palm_os_4_probe(struct usb_serial *serial, @@ -174,7 +175,6 @@ static struct usb_serial_driver handspring_device = { .close = visor_close, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, - .attach = treo_attach, .probe = visor_probe, .calc_num_ports = visor_calc_num_ports, .read_int_callback = visor_read_int_callback, @@ -189,14 +189,14 @@ static struct usb_serial_driver clie_5_device = { .description = "Sony Clie 5.0", .id_table = clie_id_5_table, .num_ports = 2, + .num_bulk_out = 2, .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, .unthrottle = usb_serial_generic_unthrottle, - .attach = clie_5_attach, .probe = visor_probe, - .calc_num_ports = visor_calc_num_ports, + .calc_num_ports = clie_5_calc_num_ports, .read_int_callback = visor_read_int_callback, }; @@ -466,16 +466,60 @@ static int visor_probe(struct usb_serial *serial, return retval; } -static int visor_calc_num_ports(struct usb_serial *serial) +static int visor_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) { + unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor); int num_ports = (int)(long)(usb_get_serial_data(serial)); if (num_ports) usb_set_serial_data(serial, NULL); + /* + * Only swap the bulk endpoints for the Handspring devices with + * interrupt in endpoints, which for now are the Treo devices. + */ + if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) || + epds->num_interrupt_in == 0) + goto out; + + if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) { + dev_err(&serial->interface->dev, "missing endpoints\n"); + return -ENODEV; + } + + /* + * It appears that Treos and Kyoceras want to use the + * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint, + * so let's swap the 1st and 2nd bulk in and interrupt endpoints. + * Note that swapping the bulk out endpoints would break lots of + * apps that want to communicate on the second port. + */ + swap(epds->bulk_in[0], epds->bulk_in[1]); + swap(epds->interrupt_in[0], epds->interrupt_in[1]); +out: return num_ports; } +static int clie_5_calc_num_ports(struct usb_serial *serial, + struct usb_serial_endpoints *epds) +{ + /* + * TH55 registers 2 ports. + * Communication in from the UX50/TH55 uses the first bulk-in + * endpoint, while communication out to the UX50/TH55 uses the second + * bulk-out endpoint. + */ + + /* + * FIXME: Should we swap the descriptors instead of using the same + * bulk-out endpoint for both ports? + */ + epds->bulk_out[0] = epds->bulk_out[1]; + + return serial->type->num_ports; +} + static int clie_3_5_startup(struct usb_serial *serial) { struct device *dev = &serial->dev->dev; @@ -531,94 +575,6 @@ out: return result; } -static int treo_attach(struct usb_serial *serial) -{ - struct usb_serial_port *swap_port; - - /* Only do this endpoint hack for the Handspring devices with - * interrupt in endpoints, which for now are the Treo devices. */ - if (!((le16_to_cpu(serial->dev->descriptor.idVendor) - == HANDSPRING_VENDOR_ID) || - (le16_to_cpu(serial->dev->descriptor.idVendor) - == KYOCERA_VENDOR_ID)) || - (serial->num_interrupt_in == 0)) - return 0; - - if (serial->num_bulk_in < 2 || serial->num_interrupt_in < 2) { - dev_err(&serial->interface->dev, "missing endpoints\n"); - return -ENODEV; - } - - /* - * It appears that Treos and Kyoceras want to use the - * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint, - * so let's swap the 1st and 2nd bulk in and interrupt endpoints. - * Note that swapping the bulk out endpoints would break lots of - * apps that want to communicate on the second port. - */ -#define COPY_PORT(dest, src) \ - do { \ - int i; \ - \ - for (i = 0; i < ARRAY_SIZE(src->read_urbs); ++i) { \ - dest->read_urbs[i] = src->read_urbs[i]; \ - dest->read_urbs[i]->context = dest; \ - dest->bulk_in_buffers[i] = src->bulk_in_buffers[i]; \ - } \ - dest->read_urb = src->read_urb; \ - dest->bulk_in_endpointAddress = src->bulk_in_endpointAddress;\ - dest->bulk_in_buffer = src->bulk_in_buffer; \ - dest->bulk_in_size = src->bulk_in_size; \ - dest->interrupt_in_urb = src->interrupt_in_urb; \ - dest->interrupt_in_urb->context = dest; \ - dest->interrupt_in_endpointAddress = \ - src->interrupt_in_endpointAddress;\ - dest->interrupt_in_buffer = src->interrupt_in_buffer; \ - } while (0); - - swap_port = kmalloc(sizeof(*swap_port), GFP_KERNEL); - if (!swap_port) - return -ENOMEM; - COPY_PORT(swap_port, serial->port[0]); - COPY_PORT(serial->port[0], serial->port[1]); - COPY_PORT(serial->port[1], swap_port); - kfree(swap_port); - - return 0; -} - -static int clie_5_attach(struct usb_serial *serial) -{ - struct usb_serial_port *port; - unsigned int pipe; - int j; - - /* TH55 registers 2 ports. - Communication in from the UX50/TH55 uses bulk_in_endpointAddress - from port 0. Communication out to the UX50/TH55 uses - bulk_out_endpointAddress from port 1 - - Lets do a quick and dirty mapping - */ - - /* some sanity check */ - if (serial->num_bulk_out < 2) { - dev_err(&serial->interface->dev, "missing bulk out endpoints\n"); - return -ENODEV; - } - - /* port 0 now uses the modified endpoint Address */ - port = serial->port[0]; - port->bulk_out_endpointAddress = - serial->port[1]->bulk_out_endpointAddress; - - pipe = usb_sndbulkpipe(serial->dev, port->bulk_out_endpointAddress); - for (j = 0; j < ARRAY_SIZE(port->write_urbs); ++j) - port->write_urbs[j]->pipe = pipe; - - return 0; -} - module_usb_serial_driver(serial_drivers, id_table_combined); MODULE_AUTHOR(DRIVER_AUTHOR); diff --git a/drivers/usb/serial/whiteheat.c b/drivers/usb/serial/whiteheat.c index 5ab65eb1dacc..55cebc1e6fec 100644 --- a/drivers/usb/serial/whiteheat.c +++ b/drivers/usb/serial/whiteheat.c @@ -80,8 +80,6 @@ static int whiteheat_firmware_download(struct usb_serial *serial, static int whiteheat_firmware_attach(struct usb_serial *serial); /* function prototypes for the Connect Tech WhiteHEAT serial converter */ -static int whiteheat_probe(struct usb_serial *serial, - const struct usb_device_id *id); static int whiteheat_attach(struct usb_serial *serial); static void whiteheat_release(struct usb_serial *serial); static int whiteheat_port_probe(struct usb_serial_port *port); @@ -118,7 +116,8 @@ static struct usb_serial_driver whiteheat_device = { .description = "Connect Tech - WhiteHEAT", .id_table = id_table_std, .num_ports = 4, - .probe = whiteheat_probe, + .num_bulk_in = 5, + .num_bulk_out = 5, .attach = whiteheat_attach, .release = whiteheat_release, .port_probe = whiteheat_port_probe, @@ -221,33 +220,6 @@ static int whiteheat_firmware_attach(struct usb_serial *serial) * Connect Tech's White Heat serial driver functions *****************************************************************************/ -static int whiteheat_probe(struct usb_serial *serial, - const struct usb_device_id *id) -{ - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - size_t num_bulk_in = 0; - size_t num_bulk_out = 0; - size_t min_num_bulk; - unsigned int i; - - iface_desc = serial->interface->cur_altsetting; - - for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { - endpoint = &iface_desc->endpoint[i].desc; - if (usb_endpoint_is_bulk_in(endpoint)) - ++num_bulk_in; - if (usb_endpoint_is_bulk_out(endpoint)) - ++num_bulk_out; - } - - min_num_bulk = COMMAND_PORT + 1; - if (num_bulk_in < min_num_bulk || num_bulk_out < min_num_bulk) - return -ENODEV; - - return 0; -} - static int whiteheat_attach(struct usb_serial *serial) { struct usb_serial_port *command_port; diff --git a/drivers/usb/storage/karma.c b/drivers/usb/storage/karma.c index f9d407f0b508..b05ba4929f00 100644 --- a/drivers/usb/storage/karma.c +++ b/drivers/usb/storage/karma.c @@ -105,7 +105,7 @@ static struct us_unusual_dev karma_unusual_dev_list[] = { */ static int rio_karma_send_command(char cmd, struct us_data *us) { - int result, partial; + int result; unsigned long timeout; static unsigned char seq = 1; struct karma_data *data = (struct karma_data *) us->extra; @@ -119,12 +119,12 @@ static int rio_karma_send_command(char cmd, struct us_data *us) timeout = jiffies + msecs_to_jiffies(6000); for (;;) { result = usb_stor_bulk_transfer_buf(us, us->send_bulk_pipe, - us->iobuf, RIO_SEND_LEN, &partial); + us->iobuf, RIO_SEND_LEN, NULL); if (result != USB_STOR_XFER_GOOD) goto err; result = usb_stor_bulk_transfer_buf(us, us->recv_bulk_pipe, - data->recv, RIO_RECV_LEN, &partial); + data->recv, RIO_RECV_LEN, NULL); if (result != USB_STOR_XFER_GOOD) goto err; diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h index 9129f6cb8230..5a70c33ef0e0 100644 --- a/drivers/usb/storage/unusual_devs.h +++ b/drivers/usb/storage/unusual_devs.h @@ -42,7 +42,7 @@ * - a patch that adds the entry for your device, including your * email address right above the entry (plus maybe a brief * explanation of the reason for the entry), - * - a copy of /proc/bus/usb/devices with your device plugged in + * - a copy of /sys/kernel/debug/usb/devices with your device plugged in * running with this patch. * Send your submission to either Phil Dibowitz <phil@ipom.com> or * Alan Stern <stern@rowland.harvard.edu>, and don't forget to CC: the @@ -176,7 +176,7 @@ UNUSUAL_DEV( 0x0420, 0x0001, 0x0100, 0x0100, /* * Reported by Andrew Nayenko <relan@bk.ru> - * Updated for new firmware by Phillip Potter <phillipinda@hotmail.com> + * Updated for new firmware by Phillip Potter <phil@philpotter.co.uk> */ UNUSUAL_DEV( 0x0421, 0x0019, 0x0592, 0x0610, "Nokia", diff --git a/drivers/usb/storage/usb.c b/drivers/usb/storage/usb.c index 615bea08ec0a..06615934fed1 100644 --- a/drivers/usb/storage/usb.c +++ b/drivers/usb/storage/usb.c @@ -737,13 +737,11 @@ static void get_protocol(struct us_data *us) /* Get the pipe settings */ static int get_pipes(struct us_data *us) { - struct usb_host_interface *altsetting = - us->pusb_intf->cur_altsetting; - int i; - struct usb_endpoint_descriptor *ep; - struct usb_endpoint_descriptor *ep_in = NULL; - struct usb_endpoint_descriptor *ep_out = NULL; - struct usb_endpoint_descriptor *ep_int = NULL; + struct usb_host_interface *alt = us->pusb_intf->cur_altsetting; + struct usb_endpoint_descriptor *ep_in; + struct usb_endpoint_descriptor *ep_out; + struct usb_endpoint_descriptor *ep_int; + int res; /* * Find the first endpoint of each type we need. @@ -751,28 +749,16 @@ static int get_pipes(struct us_data *us) * An optional interrupt-in is OK (necessary for CBI protocol). * We will ignore any others. */ - for (i = 0; i < altsetting->desc.bNumEndpoints; i++) { - ep = &altsetting->endpoint[i].desc; - - if (usb_endpoint_xfer_bulk(ep)) { - if (usb_endpoint_dir_in(ep)) { - if (!ep_in) - ep_in = ep; - } else { - if (!ep_out) - ep_out = ep; - } - } - - else if (usb_endpoint_is_int_in(ep)) { - if (!ep_int) - ep_int = ep; - } + res = usb_find_common_endpoints(alt, &ep_in, &ep_out, NULL, NULL); + if (res) { + usb_stor_dbg(us, "bulk endpoints not found\n"); + return res; } - if (!ep_in || !ep_out || (us->protocol == USB_PR_CBI && !ep_int)) { - usb_stor_dbg(us, "Endpoint sanity check failed! Rejecting dev.\n"); - return -EIO; + res = usb_find_int_in_endpoint(alt, &ep_int); + if (res && us->protocol == USB_PR_CBI) { + usb_stor_dbg(us, "interrupt endpoint not found\n"); + return res; } /* Calculate and store the pipe values */ diff --git a/drivers/usb/typec/Kconfig b/drivers/usb/typec/Kconfig new file mode 100644 index 000000000000..dfcfe459b7cf --- /dev/null +++ b/drivers/usb/typec/Kconfig @@ -0,0 +1,22 @@ + +menu "USB Power Delivery and Type-C drivers" + +config TYPEC + tristate + +config TYPEC_WCOVE + tristate "Intel WhiskeyCove PMIC USB Type-C PHY driver" + depends on ACPI + depends on INTEL_SOC_PMIC + depends on INTEL_PMC_IPC + depends on BXT_WC_PMIC_OPREGION + select TYPEC + help + This driver adds support for USB Type-C detection on Intel Broxton + platforms that have Intel Whiskey Cove PMIC. The driver can detect the + role and cable orientation. + + To compile this driver as module, choose M here: the module will be + called typec_wcove + +endmenu diff --git a/drivers/usb/typec/Makefile b/drivers/usb/typec/Makefile new file mode 100644 index 000000000000..b9cb862221af --- /dev/null +++ b/drivers/usb/typec/Makefile @@ -0,0 +1,2 @@ +obj-$(CONFIG_TYPEC) += typec.o +obj-$(CONFIG_TYPEC_WCOVE) += typec_wcove.o diff --git a/drivers/usb/typec/typec.c b/drivers/usb/typec/typec.c new file mode 100644 index 000000000000..89e540bb7ff3 --- /dev/null +++ b/drivers/usb/typec/typec.c @@ -0,0 +1,1262 @@ +/* + * USB Type-C Connector Class + * + * Copyright (C) 2017, Intel Corporation + * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/device.h> +#include <linux/module.h> +#include <linux/slab.h> +#include <linux/usb/typec.h> + +struct typec_mode { + int index; + u32 vdo; + char *desc; + enum typec_port_type roles; + + struct typec_altmode *alt_mode; + + unsigned int active:1; + + char group_name[6]; + struct attribute_group group; + struct attribute *attrs[5]; + struct device_attribute vdo_attr; + struct device_attribute desc_attr; + struct device_attribute active_attr; + struct device_attribute roles_attr; +}; + +struct typec_altmode { + struct device dev; + u16 svid; + int n_modes; + struct typec_mode modes[ALTMODE_MAX_MODES]; + const struct attribute_group *mode_groups[ALTMODE_MAX_MODES]; +}; + +struct typec_plug { + struct device dev; + enum typec_plug_index index; +}; + +struct typec_cable { + struct device dev; + enum typec_plug_type type; + struct usb_pd_identity *identity; + unsigned int active:1; +}; + +struct typec_partner { + struct device dev; + unsigned int usb_pd:1; + struct usb_pd_identity *identity; + enum typec_accessory accessory; +}; + +struct typec_port { + unsigned int id; + struct device dev; + + int prefer_role; + enum typec_data_role data_role; + enum typec_role pwr_role; + enum typec_role vconn_role; + enum typec_pwr_opmode pwr_opmode; + + const struct typec_capability *cap; +}; + +#define to_typec_port(_dev_) container_of(_dev_, struct typec_port, dev) +#define to_typec_plug(_dev_) container_of(_dev_, struct typec_plug, dev) +#define to_typec_cable(_dev_) container_of(_dev_, struct typec_cable, dev) +#define to_typec_partner(_dev_) container_of(_dev_, struct typec_partner, dev) +#define to_altmode(_dev_) container_of(_dev_, struct typec_altmode, dev) + +static const struct device_type typec_partner_dev_type; +static const struct device_type typec_cable_dev_type; +static const struct device_type typec_plug_dev_type; +static const struct device_type typec_port_dev_type; + +#define is_typec_partner(_dev_) (_dev_->type == &typec_partner_dev_type) +#define is_typec_cable(_dev_) (_dev_->type == &typec_cable_dev_type) +#define is_typec_plug(_dev_) (_dev_->type == &typec_plug_dev_type) +#define is_typec_port(_dev_) (_dev_->type == &typec_port_dev_type) + +static DEFINE_IDA(typec_index_ida); +static struct class *typec_class; + +/* Common attributes */ + +static const char * const typec_accessory_modes[] = { + [TYPEC_ACCESSORY_NONE] = "none", + [TYPEC_ACCESSORY_AUDIO] = "analog_audio", + [TYPEC_ACCESSORY_DEBUG] = "debug", +}; + +static struct usb_pd_identity *get_pd_identity(struct device *dev) +{ + if (is_typec_partner(dev)) { + struct typec_partner *partner = to_typec_partner(dev); + + return partner->identity; + } else if (is_typec_cable(dev)) { + struct typec_cable *cable = to_typec_cable(dev); + + return cable->identity; + } + return NULL; +} + +static ssize_t id_header_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->id_header); +} +static DEVICE_ATTR_RO(id_header); + +static ssize_t cert_stat_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->cert_stat); +} +static DEVICE_ATTR_RO(cert_stat); + +static ssize_t product_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct usb_pd_identity *id = get_pd_identity(dev); + + return sprintf(buf, "0x%08x\n", id->product); +} +static DEVICE_ATTR_RO(product); + +static struct attribute *usb_pd_id_attrs[] = { + &dev_attr_id_header.attr, + &dev_attr_cert_stat.attr, + &dev_attr_product.attr, + NULL +}; + +static const struct attribute_group usb_pd_id_group = { + .name = "identity", + .attrs = usb_pd_id_attrs, +}; + +static const struct attribute_group *usb_pd_id_groups[] = { + &usb_pd_id_group, + NULL, +}; + +static void typec_report_identity(struct device *dev) +{ + sysfs_notify(&dev->kobj, "identity", "id_header"); + sysfs_notify(&dev->kobj, "identity", "cert_stat"); + sysfs_notify(&dev->kobj, "identity", "product"); +} + +/* ------------------------------------------------------------------------- */ +/* Alternate Modes */ + +/** + * typec_altmode_update_active - Report Enter/Exit mode + * @alt: Handle to the alternate mode + * @mode: Mode index + * @active: True when the mode has been entered + * + * If a partner or cable plug executes Enter/Exit Mode command successfully, the + * drivers use this routine to report the updated state of the mode. + */ +void typec_altmode_update_active(struct typec_altmode *alt, int mode, + bool active) +{ + struct typec_mode *m = &alt->modes[mode]; + char dir[6]; + + if (m->active == active) + return; + + m->active = active; + snprintf(dir, sizeof(dir), "mode%d", mode); + sysfs_notify(&alt->dev.kobj, dir, "active"); + kobject_uevent(&alt->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_altmode_update_active); + +/** + * typec_altmode2port - Alternate Mode to USB Type-C port + * @alt: The Alternate Mode + * + * Returns handle to the port that a cable plug or partner with @alt is + * connected to. + */ +struct typec_port *typec_altmode2port(struct typec_altmode *alt) +{ + if (is_typec_plug(alt->dev.parent)) + return to_typec_port(alt->dev.parent->parent->parent); + if (is_typec_partner(alt->dev.parent)) + return to_typec_port(alt->dev.parent->parent); + if (is_typec_port(alt->dev.parent)) + return to_typec_port(alt->dev.parent); + + return NULL; +} +EXPORT_SYMBOL_GPL(typec_altmode2port); + +static ssize_t +typec_altmode_vdo_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + vdo_attr); + + return sprintf(buf, "0x%08x\n", mode->vdo); +} + +static ssize_t +typec_altmode_desc_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + desc_attr); + + return sprintf(buf, "%s\n", mode->desc ? mode->desc : ""); +} + +static ssize_t +typec_altmode_active_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + active_attr); + + return sprintf(buf, "%s\n", mode->active ? "yes" : "no"); +} + +static ssize_t +typec_altmode_active_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + active_attr); + struct typec_port *port = typec_altmode2port(mode->alt_mode); + bool activate; + int ret; + + if (!port->cap->activate_mode) + return -EOPNOTSUPP; + + ret = kstrtobool(buf, &activate); + if (ret) + return ret; + + ret = port->cap->activate_mode(port->cap, mode->index, activate); + if (ret) + return ret; + + return size; +} + +static ssize_t +typec_altmode_roles_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_mode *mode = container_of(attr, struct typec_mode, + roles_attr); + ssize_t ret; + + switch (mode->roles) { + case TYPEC_PORT_DFP: + ret = sprintf(buf, "source\n"); + break; + case TYPEC_PORT_UFP: + ret = sprintf(buf, "sink\n"); + break; + case TYPEC_PORT_DRP: + default: + ret = sprintf(buf, "source sink\n"); + break; + } + return ret; +} + +static void typec_init_modes(struct typec_altmode *alt, + struct typec_mode_desc *desc, bool is_port) +{ + int i; + + for (i = 0; i < alt->n_modes; i++, desc++) { + struct typec_mode *mode = &alt->modes[i]; + + /* Not considering the human readable description critical */ + mode->desc = kstrdup(desc->desc, GFP_KERNEL); + if (desc->desc && !mode->desc) + dev_err(&alt->dev, "failed to copy mode%d desc\n", i); + + mode->alt_mode = alt; + mode->vdo = desc->vdo; + mode->roles = desc->roles; + mode->index = desc->index; + sprintf(mode->group_name, "mode%d", desc->index); + + sysfs_attr_init(&mode->vdo_attr.attr); + mode->vdo_attr.attr.name = "vdo"; + mode->vdo_attr.attr.mode = 0444; + mode->vdo_attr.show = typec_altmode_vdo_show; + + sysfs_attr_init(&mode->desc_attr.attr); + mode->desc_attr.attr.name = "description"; + mode->desc_attr.attr.mode = 0444; + mode->desc_attr.show = typec_altmode_desc_show; + + sysfs_attr_init(&mode->active_attr.attr); + mode->active_attr.attr.name = "active"; + mode->active_attr.attr.mode = 0644; + mode->active_attr.show = typec_altmode_active_show; + mode->active_attr.store = typec_altmode_active_store; + + mode->attrs[0] = &mode->vdo_attr.attr; + mode->attrs[1] = &mode->desc_attr.attr; + mode->attrs[2] = &mode->active_attr.attr; + + /* With ports, list the roles that the mode is supported with */ + if (is_port) { + sysfs_attr_init(&mode->roles_attr.attr); + mode->roles_attr.attr.name = "supported_roles"; + mode->roles_attr.attr.mode = 0444; + mode->roles_attr.show = typec_altmode_roles_show; + + mode->attrs[3] = &mode->roles_attr.attr; + } + + mode->group.attrs = mode->attrs; + mode->group.name = mode->group_name; + + alt->mode_groups[i] = &mode->group; + } +} + +static ssize_t svid_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_altmode *alt = to_altmode(dev); + + return sprintf(buf, "%04x\n", alt->svid); +} +static DEVICE_ATTR_RO(svid); + +static struct attribute *typec_altmode_attrs[] = { + &dev_attr_svid.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_altmode); + +static void typec_altmode_release(struct device *dev) +{ + struct typec_altmode *alt = to_altmode(dev); + int i; + + for (i = 0; i < alt->n_modes; i++) + kfree(alt->modes[i].desc); + kfree(alt); +} + +static const struct device_type typec_altmode_dev_type = { + .name = "typec_alternate_mode", + .groups = typec_altmode_groups, + .release = typec_altmode_release, +}; + +static struct typec_altmode * +typec_register_altmode(struct device *parent, struct typec_altmode_desc *desc) +{ + struct typec_altmode *alt; + int ret; + + alt = kzalloc(sizeof(*alt), GFP_KERNEL); + if (!alt) + return NULL; + + alt->svid = desc->svid; + alt->n_modes = desc->n_modes; + typec_init_modes(alt, desc->modes, is_typec_port(parent)); + + alt->dev.parent = parent; + alt->dev.groups = alt->mode_groups; + alt->dev.type = &typec_altmode_dev_type; + dev_set_name(&alt->dev, "svid-%04x", alt->svid); + + ret = device_register(&alt->dev); + if (ret) { + dev_err(parent, "failed to register alternate mode (%d)\n", + ret); + put_device(&alt->dev); + return NULL; + } + + return alt; +} + +/** + * typec_unregister_altmode - Unregister Alternate Mode + * @alt: The alternate mode to be unregistered + * + * Unregister device created with typec_partner_register_altmode(), + * typec_plug_register_altmode() or typec_port_register_altmode(). + */ +void typec_unregister_altmode(struct typec_altmode *alt) +{ + if (alt) + device_unregister(&alt->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_altmode); + +/* ------------------------------------------------------------------------- */ +/* Type-C Partners */ + +static ssize_t accessory_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_partner *p = to_typec_partner(dev); + + return sprintf(buf, "%s\n", typec_accessory_modes[p->accessory]); +} +static DEVICE_ATTR_RO(accessory_mode); + +static ssize_t supports_usb_power_delivery_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_partner *p = to_typec_partner(dev); + + return sprintf(buf, "%s\n", p->usb_pd ? "yes" : "no"); +} +static DEVICE_ATTR_RO(supports_usb_power_delivery); + +static struct attribute *typec_partner_attrs[] = { + &dev_attr_accessory_mode.attr, + &dev_attr_supports_usb_power_delivery.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_partner); + +static void typec_partner_release(struct device *dev) +{ + struct typec_partner *partner = to_typec_partner(dev); + + kfree(partner); +} + +static const struct device_type typec_partner_dev_type = { + .name = "typec_partner", + .groups = typec_partner_groups, + .release = typec_partner_release, +}; + +/** + * typec_partner_set_identity - Report result from Discover Identity command + * @partner: The partner updated identity values + * + * This routine is used to report that the result of Discover Identity USB power + * delivery command has become available. + */ +int typec_partner_set_identity(struct typec_partner *partner) +{ + if (!partner->identity) + return -EINVAL; + + typec_report_identity(&partner->dev); + return 0; +} +EXPORT_SYMBOL_GPL(typec_partner_set_identity); + +/** + * typec_partner_register_altmode - Register USB Type-C Partner Alternate Mode + * @partner: USB Type-C Partner that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register each alternate mode individually that + * @partner has listed in response to Discover SVIDs command. The modes for a + * SVID listed in response to Discover Modes command need to be listed in an + * array in @desc. + * + * Returns handle to the alternate mode on success or NULL on failure. + */ +struct typec_altmode * +typec_partner_register_altmode(struct typec_partner *partner, + struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&partner->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_partner_register_altmode); + +/** + * typec_register_partner - Register a USB Type-C Partner + * @port: The USB Type-C Port the partner is connected to + * @desc: Description of the partner + * + * Registers a device for USB Type-C Partner described in @desc. + * + * Returns handle to the partner on success or NULL on failure. + */ +struct typec_partner *typec_register_partner(struct typec_port *port, + struct typec_partner_desc *desc) +{ + struct typec_partner *partner; + int ret; + + partner = kzalloc(sizeof(*partner), GFP_KERNEL); + if (!partner) + return NULL; + + partner->usb_pd = desc->usb_pd; + partner->accessory = desc->accessory; + + if (desc->identity) { + /* + * Creating directory for the identity only if the driver is + * able to provide data to it. + */ + partner->dev.groups = usb_pd_id_groups; + partner->identity = desc->identity; + } + + partner->dev.class = typec_class; + partner->dev.parent = &port->dev; + partner->dev.type = &typec_partner_dev_type; + dev_set_name(&partner->dev, "%s-partner", dev_name(&port->dev)); + + ret = device_register(&partner->dev); + if (ret) { + dev_err(&port->dev, "failed to register partner (%d)\n", ret); + put_device(&partner->dev); + return NULL; + } + + return partner; +} +EXPORT_SYMBOL_GPL(typec_register_partner); + +/** + * typec_unregister_partner - Unregister a USB Type-C Partner + * @partner: The partner to be unregistered + * + * Unregister device created with typec_register_partner(). + */ +void typec_unregister_partner(struct typec_partner *partner) +{ + if (partner) + device_unregister(&partner->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_partner); + +/* ------------------------------------------------------------------------- */ +/* Type-C Cable Plugs */ + +static void typec_plug_release(struct device *dev) +{ + struct typec_plug *plug = to_typec_plug(dev); + + kfree(plug); +} + +static const struct device_type typec_plug_dev_type = { + .name = "typec_plug", + .release = typec_plug_release, +}; + +/** + * typec_plug_register_altmode - Register USB Type-C Cable Plug Alternate Mode + * @plug: USB Type-C Cable Plug that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register each alternate mode individually that @plug + * has listed in response to Discover SVIDs command. The modes for a SVID that + * the plug lists in response to Discover Modes command need to be listed in an + * array in @desc. + * + * Returns handle to the alternate mode on success or NULL on failure. + */ +struct typec_altmode * +typec_plug_register_altmode(struct typec_plug *plug, + struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&plug->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_plug_register_altmode); + +/** + * typec_register_plug - Register a USB Type-C Cable Plug + * @cable: USB Type-C Cable with the plug + * @desc: Description of the cable plug + * + * Registers a device for USB Type-C Cable Plug described in @desc. A USB Type-C + * Cable Plug represents a plug with electronics in it that can response to USB + * Power Delivery SOP Prime or SOP Double Prime packages. + * + * Returns handle to the cable plug on success or NULL on failure. + */ +struct typec_plug *typec_register_plug(struct typec_cable *cable, + struct typec_plug_desc *desc) +{ + struct typec_plug *plug; + char name[8]; + int ret; + + plug = kzalloc(sizeof(*plug), GFP_KERNEL); + if (!plug) + return NULL; + + sprintf(name, "plug%d", desc->index); + + plug->index = desc->index; + plug->dev.class = typec_class; + plug->dev.parent = &cable->dev; + plug->dev.type = &typec_plug_dev_type; + dev_set_name(&plug->dev, "%s-%s", dev_name(cable->dev.parent), name); + + ret = device_register(&plug->dev); + if (ret) { + dev_err(&cable->dev, "failed to register plug (%d)\n", ret); + put_device(&plug->dev); + return NULL; + } + + return plug; +} +EXPORT_SYMBOL_GPL(typec_register_plug); + +/** + * typec_unregister_plug - Unregister a USB Type-C Cable Plug + * @plug: The cable plug to be unregistered + * + * Unregister device created with typec_register_plug(). + */ +void typec_unregister_plug(struct typec_plug *plug) +{ + if (plug) + device_unregister(&plug->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_plug); + +/* Type-C Cables */ + +static ssize_t +type_show(struct device *dev, struct device_attribute *attr, char *buf) +{ + struct typec_cable *cable = to_typec_cable(dev); + + return sprintf(buf, "%s\n", cable->active ? "active" : "passive"); +} +static DEVICE_ATTR_RO(type); + +static const char * const typec_plug_types[] = { + [USB_PLUG_NONE] = "unknown", + [USB_PLUG_TYPE_A] = "type-a", + [USB_PLUG_TYPE_B] = "type-b", + [USB_PLUG_TYPE_C] = "type-c", + [USB_PLUG_CAPTIVE] = "captive", +}; + +static ssize_t plug_type_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_cable *cable = to_typec_cable(dev); + + return sprintf(buf, "%s\n", typec_plug_types[cable->type]); +} +static DEVICE_ATTR_RO(plug_type); + +static struct attribute *typec_cable_attrs[] = { + &dev_attr_type.attr, + &dev_attr_plug_type.attr, + NULL +}; +ATTRIBUTE_GROUPS(typec_cable); + +static void typec_cable_release(struct device *dev) +{ + struct typec_cable *cable = to_typec_cable(dev); + + kfree(cable); +} + +static const struct device_type typec_cable_dev_type = { + .name = "typec_cable", + .groups = typec_cable_groups, + .release = typec_cable_release, +}; + +/** + * typec_cable_set_identity - Report result from Discover Identity command + * @cable: The cable updated identity values + * + * This routine is used to report that the result of Discover Identity USB power + * delivery command has become available. + */ +int typec_cable_set_identity(struct typec_cable *cable) +{ + if (!cable->identity) + return -EINVAL; + + typec_report_identity(&cable->dev); + return 0; +} +EXPORT_SYMBOL_GPL(typec_cable_set_identity); + +/** + * typec_register_cable - Register a USB Type-C Cable + * @port: The USB Type-C Port the cable is connected to + * @desc: Description of the cable + * + * Registers a device for USB Type-C Cable described in @desc. The cable will be + * parent for the optional cable plug devises. + * + * Returns handle to the cable on success or NULL on failure. + */ +struct typec_cable *typec_register_cable(struct typec_port *port, + struct typec_cable_desc *desc) +{ + struct typec_cable *cable; + int ret; + + cable = kzalloc(sizeof(*cable), GFP_KERNEL); + if (!cable) + return NULL; + + cable->type = desc->type; + cable->active = desc->active; + + if (desc->identity) { + /* + * Creating directory for the identity only if the driver is + * able to provide data to it. + */ + cable->dev.groups = usb_pd_id_groups; + cable->identity = desc->identity; + } + + cable->dev.class = typec_class; + cable->dev.parent = &port->dev; + cable->dev.type = &typec_cable_dev_type; + dev_set_name(&cable->dev, "%s-cable", dev_name(&port->dev)); + + ret = device_register(&cable->dev); + if (ret) { + dev_err(&port->dev, "failed to register cable (%d)\n", ret); + put_device(&cable->dev); + return NULL; + } + + return cable; +} +EXPORT_SYMBOL_GPL(typec_register_cable); + +/** + * typec_unregister_cable - Unregister a USB Type-C Cable + * @cable: The cable to be unregistered + * + * Unregister device created with typec_register_cable(). + */ +void typec_unregister_cable(struct typec_cable *cable) +{ + if (cable) + device_unregister(&cable->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_cable); + +/* ------------------------------------------------------------------------- */ +/* USB Type-C ports */ + +static const char * const typec_roles[] = { + [TYPEC_SINK] = "sink", + [TYPEC_SOURCE] = "source", +}; + +static const char * const typec_data_roles[] = { + [TYPEC_DEVICE] = "device", + [TYPEC_HOST] = "host", +}; + +static ssize_t +preferred_role_store(struct device *dev, struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int role; + int ret; + + if (port->cap->type != TYPEC_PORT_DRP) { + dev_dbg(dev, "Preferred role only supported with DRP ports\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->try_role) { + dev_dbg(dev, "Setting preferred role not supported\n"); + return -EOPNOTSUPP; + } + + role = sysfs_match_string(typec_roles, buf); + if (role < 0) { + if (sysfs_streq(buf, "none")) + role = TYPEC_NO_PREFERRED_ROLE; + else + return -EINVAL; + } + + ret = port->cap->try_role(port->cap, role); + if (ret) + return ret; + + port->prefer_role = role; + return size; +} + +static ssize_t +preferred_role_show(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type != TYPEC_PORT_DRP) + return 0; + + if (port->prefer_role < 0) + return 0; + + return sprintf(buf, "%s\n", typec_roles[port->prefer_role]); +} +static DEVICE_ATTR_RW(preferred_role); + +static ssize_t data_role_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret; + + if (port->cap->type != TYPEC_PORT_DRP) { + dev_dbg(dev, "data role swap only supported with DRP ports\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->dr_set) { + dev_dbg(dev, "data role swapping not supported\n"); + return -EOPNOTSUPP; + } + + ret = sysfs_match_string(typec_data_roles, buf); + if (ret < 0) + return ret; + + ret = port->cap->dr_set(port->cap, ret); + if (ret) + return ret; + + return size; +} + +static ssize_t data_role_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type == TYPEC_PORT_DRP) + return sprintf(buf, "%s\n", port->data_role == TYPEC_HOST ? + "[host] device" : "host [device]"); + + return sprintf(buf, "[%s]\n", typec_data_roles[port->data_role]); +} +static DEVICE_ATTR_RW(data_role); + +static ssize_t power_role_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + int ret = size; + + if (!port->cap->pd_revision) { + dev_dbg(dev, "USB Power Delivery not supported\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->pr_set) { + dev_dbg(dev, "power role swapping not supported\n"); + return -EOPNOTSUPP; + } + + if (port->pwr_opmode != TYPEC_PWR_MODE_PD) { + dev_dbg(dev, "partner unable to swap power role\n"); + return -EIO; + } + + ret = sysfs_match_string(typec_roles, buf); + if (ret < 0) + return ret; + + ret = port->cap->pr_set(port->cap, ret); + if (ret) + return ret; + + return size; +} + +static ssize_t power_role_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + if (port->cap->type == TYPEC_PORT_DRP) + return sprintf(buf, "%s\n", port->pwr_role == TYPEC_SOURCE ? + "[source] sink" : "source [sink]"); + + return sprintf(buf, "[%s]\n", typec_roles[port->pwr_role]); +} +static DEVICE_ATTR_RW(power_role); + +static const char * const typec_pwr_opmodes[] = { + [TYPEC_PWR_MODE_USB] = "default", + [TYPEC_PWR_MODE_1_5A] = "1.5A", + [TYPEC_PWR_MODE_3_0A] = "3.0A", + [TYPEC_PWR_MODE_PD] = "usb_power_delivery", +}; + +static ssize_t power_operation_mode_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + return sprintf(buf, "%s\n", typec_pwr_opmodes[port->pwr_opmode]); +} +static DEVICE_ATTR_RO(power_operation_mode); + +static ssize_t vconn_source_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t size) +{ + struct typec_port *port = to_typec_port(dev); + bool source; + int ret; + + if (!port->cap->pd_revision) { + dev_dbg(dev, "VCONN swap depends on USB Power Delivery\n"); + return -EOPNOTSUPP; + } + + if (!port->cap->vconn_set) { + dev_dbg(dev, "VCONN swapping not supported\n"); + return -EOPNOTSUPP; + } + + ret = kstrtobool(buf, &source); + if (ret) + return ret; + + ret = port->cap->vconn_set(port->cap, (enum typec_role)source); + if (ret) + return ret; + + return size; +} + +static ssize_t vconn_source_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + struct typec_port *port = to_typec_port(dev); + + return sprintf(buf, "%s\n", + port->vconn_role == TYPEC_SOURCE ? "yes" : "no"); +} +static DEVICE_ATTR_RW(vconn_source); + +static ssize_t supported_accessory_modes_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + ssize_t ret = 0; + int i; + + for (i = 0; i < ARRAY_SIZE(port->cap->accessory); i++) { + if (port->cap->accessory[i]) + ret += sprintf(buf + ret, "%s ", + typec_accessory_modes[port->cap->accessory[i]]); + } + + if (!ret) + return sprintf(buf, "none\n"); + + buf[ret - 1] = '\n'; + + return ret; +} +static DEVICE_ATTR_RO(supported_accessory_modes); + +static ssize_t usb_typec_revision_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *port = to_typec_port(dev); + u16 rev = port->cap->revision; + + return sprintf(buf, "%d.%d\n", (rev >> 8) & 0xff, (rev >> 4) & 0xf); +} +static DEVICE_ATTR_RO(usb_typec_revision); + +static ssize_t usb_power_delivery_revision_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + struct typec_port *p = to_typec_port(dev); + + return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff); +} +static DEVICE_ATTR_RO(usb_power_delivery_revision); + +static struct attribute *typec_attrs[] = { + &dev_attr_data_role.attr, + &dev_attr_power_operation_mode.attr, + &dev_attr_power_role.attr, + &dev_attr_preferred_role.attr, + &dev_attr_supported_accessory_modes.attr, + &dev_attr_usb_power_delivery_revision.attr, + &dev_attr_usb_typec_revision.attr, + &dev_attr_vconn_source.attr, + NULL, +}; +ATTRIBUTE_GROUPS(typec); + +static int typec_uevent(struct device *dev, struct kobj_uevent_env *env) +{ + int ret; + + ret = add_uevent_var(env, "TYPEC_PORT=%s", dev_name(dev)); + if (ret) + dev_err(dev, "failed to add uevent TYPEC_PORT\n"); + + return ret; +} + +static void typec_release(struct device *dev) +{ + struct typec_port *port = to_typec_port(dev); + + ida_simple_remove(&typec_index_ida, port->id); + kfree(port); +} + +static const struct device_type typec_port_dev_type = { + .name = "typec_port", + .groups = typec_groups, + .uevent = typec_uevent, + .release = typec_release, +}; + +/* --------------------------------------- */ +/* Driver callbacks to report role updates */ + +/** + * typec_set_data_role - Report data role change + * @port: The USB Type-C Port where the role was changed + * @role: The new data role + * + * This routine is used by the port drivers to report data role changes. + */ +void typec_set_data_role(struct typec_port *port, enum typec_data_role role) +{ + if (port->data_role == role) + return; + + port->data_role = role; + sysfs_notify(&port->dev.kobj, NULL, "data_role"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_data_role); + +/** + * typec_set_pwr_role - Report power role change + * @port: The USB Type-C Port where the role was changed + * @role: The new data role + * + * This routine is used by the port drivers to report power role changes. + */ +void typec_set_pwr_role(struct typec_port *port, enum typec_role role) +{ + if (port->pwr_role == role) + return; + + port->pwr_role = role; + sysfs_notify(&port->dev.kobj, NULL, "power_role"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_pwr_role); + +/** + * typec_set_pwr_role - Report VCONN source change + * @port: The USB Type-C Port which VCONN role changed + * @role: Source when @port is sourcing VCONN, or Sink when it's not + * + * This routine is used by the port drivers to report if the VCONN source is + * changes. + */ +void typec_set_vconn_role(struct typec_port *port, enum typec_role role) +{ + if (port->vconn_role == role) + return; + + port->vconn_role = role; + sysfs_notify(&port->dev.kobj, NULL, "vconn_source"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_vconn_role); + +/** + * typec_set_pwr_opmode - Report changed power operation mode + * @port: The USB Type-C Port where the mode was changed + * @opmode: New power operation mode + * + * This routine is used by the port drivers to report changed power operation + * mode in @port. The modes are USB (default), 1.5A, 3.0A as defined in USB + * Type-C specification, and "USB Power Delivery" when the power levels are + * negotiated with methods defined in USB Power Delivery specification. + */ +void typec_set_pwr_opmode(struct typec_port *port, + enum typec_pwr_opmode opmode) +{ + if (port->pwr_opmode == opmode) + return; + + port->pwr_opmode = opmode; + sysfs_notify(&port->dev.kobj, NULL, "power_operation_mode"); + kobject_uevent(&port->dev.kobj, KOBJ_CHANGE); +} +EXPORT_SYMBOL_GPL(typec_set_pwr_opmode); + +/* --------------------------------------- */ + +/** + * typec_port_register_altmode - Register USB Type-C Port Alternate Mode + * @port: USB Type-C Port that supports the alternate mode + * @desc: Description of the alternate mode + * + * This routine is used to register an alternate mode that @port is capable of + * supporting. + * + * Returns handle to the alternate mode on success or NULL on failure. + */ +struct typec_altmode * +typec_port_register_altmode(struct typec_port *port, + struct typec_altmode_desc *desc) +{ + return typec_register_altmode(&port->dev, desc); +} +EXPORT_SYMBOL_GPL(typec_port_register_altmode); + +/** + * typec_register_port - Register a USB Type-C Port + * @parent: Parent device + * @cap: Description of the port + * + * Registers a device for USB Type-C Port described in @cap. + * + * Returns handle to the port on success or NULL on failure. + */ +struct typec_port *typec_register_port(struct device *parent, + const struct typec_capability *cap) +{ + struct typec_port *port; + int role; + int ret; + int id; + + port = kzalloc(sizeof(*port), GFP_KERNEL); + if (!port) + return NULL; + + id = ida_simple_get(&typec_index_ida, 0, 0, GFP_KERNEL); + if (id < 0) { + kfree(port); + return NULL; + } + + if (cap->type == TYPEC_PORT_DFP) + role = TYPEC_SOURCE; + else if (cap->type == TYPEC_PORT_UFP) + role = TYPEC_SINK; + else + role = cap->prefer_role; + + if (role == TYPEC_SOURCE) { + port->data_role = TYPEC_HOST; + port->pwr_role = TYPEC_SOURCE; + port->vconn_role = TYPEC_SOURCE; + } else { + port->data_role = TYPEC_DEVICE; + port->pwr_role = TYPEC_SINK; + port->vconn_role = TYPEC_SINK; + } + + port->id = id; + port->cap = cap; + port->prefer_role = cap->prefer_role; + + port->dev.class = typec_class; + port->dev.parent = parent; + port->dev.fwnode = cap->fwnode; + port->dev.type = &typec_port_dev_type; + dev_set_name(&port->dev, "port%d", id); + + ret = device_register(&port->dev); + if (ret) { + dev_err(parent, "failed to register port (%d)\n", ret); + put_device(&port->dev); + return NULL; + } + + return port; +} +EXPORT_SYMBOL_GPL(typec_register_port); + +/** + * typec_unregister_port - Unregister a USB Type-C Port + * @port: The port to be unregistered + * + * Unregister device created with typec_register_port(). + */ +void typec_unregister_port(struct typec_port *port) +{ + if (port) + device_unregister(&port->dev); +} +EXPORT_SYMBOL_GPL(typec_unregister_port); + +static int __init typec_init(void) +{ + typec_class = class_create(THIS_MODULE, "typec"); + return PTR_ERR_OR_ZERO(typec_class); +} +subsys_initcall(typec_init); + +static void __exit typec_exit(void) +{ + class_destroy(typec_class); + ida_destroy(&typec_index_ida); +} +module_exit(typec_exit); + +MODULE_AUTHOR("Heikki Krogerus <heikki.krogerus@linux.intel.com>"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("USB Type-C Connector Class"); diff --git a/drivers/usb/typec/typec_wcove.c b/drivers/usb/typec/typec_wcove.c new file mode 100644 index 000000000000..d5a7b21fa3f1 --- /dev/null +++ b/drivers/usb/typec/typec_wcove.c @@ -0,0 +1,377 @@ +/** + * typec_wcove.c - WhiskeyCove PMIC USB Type-C PHY driver + * + * Copyright (C) 2017 Intel Corporation + * Author: Heikki Krogerus <heikki.krogerus@linux.intel.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/acpi.h> +#include <linux/module.h> +#include <linux/interrupt.h> +#include <linux/usb/typec.h> +#include <linux/platform_device.h> +#include <linux/mfd/intel_soc_pmic.h> + +/* Register offsets */ +#define WCOVE_CHGRIRQ0 0x4e09 +#define WCOVE_PHYCTRL 0x5e07 + +#define USBC_CONTROL1 0x7001 +#define USBC_CONTROL2 0x7002 +#define USBC_CONTROL3 0x7003 +#define USBC_CC1_CTRL 0x7004 +#define USBC_CC2_CTRL 0x7005 +#define USBC_STATUS1 0x7007 +#define USBC_STATUS2 0x7008 +#define USBC_STATUS3 0x7009 +#define USBC_IRQ1 0x7015 +#define USBC_IRQ2 0x7016 +#define USBC_IRQMASK1 0x7017 +#define USBC_IRQMASK2 0x7018 + +/* Register bits */ + +#define USBC_CONTROL1_MODE_DRP(r) (((r) & ~0x7) | 4) + +#define USBC_CONTROL2_UNATT_SNK BIT(0) +#define USBC_CONTROL2_UNATT_SRC BIT(1) +#define USBC_CONTROL2_DIS_ST BIT(2) + +#define USBC_CONTROL3_PD_DIS BIT(1) + +#define USBC_CC_CTRL_VCONN_EN BIT(1) + +#define USBC_STATUS1_DET_ONGOING BIT(6) +#define USBC_STATUS1_RSLT(r) ((r) & 0xf) +#define USBC_RSLT_NOTHING 0 +#define USBC_RSLT_SRC_DEFAULT 1 +#define USBC_RSLT_SRC_1_5A 2 +#define USBC_RSLT_SRC_3_0A 3 +#define USBC_RSLT_SNK 4 +#define USBC_RSLT_DEBUG_ACC 5 +#define USBC_RSLT_AUDIO_ACC 6 +#define USBC_RSLT_UNDEF 15 +#define USBC_STATUS1_ORIENT(r) (((r) >> 4) & 0x3) +#define USBC_ORIENT_NORMAL 1 +#define USBC_ORIENT_REVERSE 2 + +#define USBC_STATUS2_VBUS_REQ BIT(5) + +#define USBC_IRQ1_ADCDONE1 BIT(2) +#define USBC_IRQ1_OVERTEMP BIT(1) +#define USBC_IRQ1_SHORT BIT(0) + +#define USBC_IRQ2_CC_CHANGE BIT(7) +#define USBC_IRQ2_RX_PD BIT(6) +#define USBC_IRQ2_RX_HR BIT(5) +#define USBC_IRQ2_RX_CR BIT(4) +#define USBC_IRQ2_TX_SUCCESS BIT(3) +#define USBC_IRQ2_TX_FAIL BIT(2) + +#define USBC_IRQMASK1_ALL (USBC_IRQ1_ADCDONE1 | USBC_IRQ1_OVERTEMP | \ + USBC_IRQ1_SHORT) + +#define USBC_IRQMASK2_ALL (USBC_IRQ2_CC_CHANGE | USBC_IRQ2_RX_PD | \ + USBC_IRQ2_RX_HR | USBC_IRQ2_RX_CR | \ + USBC_IRQ2_TX_SUCCESS | USBC_IRQ2_TX_FAIL) + +struct wcove_typec { + struct mutex lock; /* device lock */ + struct device *dev; + struct regmap *regmap; + struct typec_port *port; + struct typec_capability cap; + struct typec_partner *partner; +}; + +enum wcove_typec_func { + WCOVE_FUNC_DRIVE_VBUS = 1, + WCOVE_FUNC_ORIENTATION, + WCOVE_FUNC_ROLE, + WCOVE_FUNC_DRIVE_VCONN, +}; + +enum wcove_typec_orientation { + WCOVE_ORIENTATION_NORMAL, + WCOVE_ORIENTATION_REVERSE, +}; + +enum wcove_typec_role { + WCOVE_ROLE_HOST, + WCOVE_ROLE_DEVICE, +}; + +static uuid_le uuid = UUID_LE(0x482383f0, 0x2876, 0x4e49, + 0x86, 0x85, 0xdb, 0x66, 0x21, 0x1a, 0xf0, 0x37); + +static int wcove_typec_func(struct wcove_typec *wcove, + enum wcove_typec_func func, int param) +{ + union acpi_object *obj; + union acpi_object tmp; + union acpi_object argv4 = ACPI_INIT_DSM_ARGV4(1, &tmp); + + tmp.type = ACPI_TYPE_INTEGER; + tmp.integer.value = param; + + obj = acpi_evaluate_dsm(ACPI_HANDLE(wcove->dev), uuid.b, 1, func, + &argv4); + if (!obj) { + dev_err(wcove->dev, "%s: failed to evaluate _DSM\n", __func__); + return -EIO; + } + + ACPI_FREE(obj); + return 0; +} + +static irqreturn_t wcove_typec_irq(int irq, void *data) +{ + enum typec_role role = TYPEC_SINK; + struct typec_partner_desc partner; + struct wcove_typec *wcove = data; + unsigned int cc1_ctrl; + unsigned int cc2_ctrl; + unsigned int cc_irq1; + unsigned int cc_irq2; + unsigned int status1; + unsigned int status2; + int ret; + + mutex_lock(&wcove->lock); + + ret = regmap_read(wcove->regmap, USBC_IRQ1, &cc_irq1); + if (ret) + goto err; + + ret = regmap_read(wcove->regmap, USBC_IRQ2, &cc_irq2); + if (ret) + goto err; + + ret = regmap_read(wcove->regmap, USBC_STATUS1, &status1); + if (ret) + goto err; + + ret = regmap_read(wcove->regmap, USBC_STATUS2, &status2); + if (ret) + goto err; + + ret = regmap_read(wcove->regmap, USBC_CC1_CTRL, &cc1_ctrl); + if (ret) + goto err; + + ret = regmap_read(wcove->regmap, USBC_CC2_CTRL, &cc2_ctrl); + if (ret) + goto err; + + if (cc_irq1) { + if (cc_irq1 & USBC_IRQ1_OVERTEMP) + dev_err(wcove->dev, "VCONN Switch Over Temperature!\n"); + if (cc_irq1 & USBC_IRQ1_SHORT) + dev_err(wcove->dev, "VCONN Switch Short Circuit!\n"); + ret = regmap_write(wcove->regmap, USBC_IRQ1, cc_irq1); + if (ret) + goto err; + } + + if (cc_irq2) { + ret = regmap_write(wcove->regmap, USBC_IRQ2, cc_irq2); + if (ret) + goto err; + /* + * Ignoring any PD communication interrupts until the PD support + * is available + */ + if (cc_irq2 & ~USBC_IRQ2_CC_CHANGE) { + dev_WARN(wcove->dev, "USB PD handling missing\n"); + goto err; + } + } + + if (status1 & USBC_STATUS1_DET_ONGOING) + goto out; + + if (USBC_STATUS1_RSLT(status1) == USBC_RSLT_NOTHING) { + if (wcove->partner) { + typec_unregister_partner(wcove->partner); + wcove->partner = NULL; + } + + wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION, + WCOVE_ORIENTATION_NORMAL); + + /* This makes sure the device controller is disconnected */ + wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST); + + /* Port to default role */ + typec_set_data_role(wcove->port, TYPEC_DEVICE); + typec_set_pwr_role(wcove->port, TYPEC_SINK); + typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB); + + goto out; + } + + if (wcove->partner) + goto out; + + switch (USBC_STATUS1_ORIENT(status1)) { + case USBC_ORIENT_NORMAL: + wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION, + WCOVE_ORIENTATION_NORMAL); + break; + case USBC_ORIENT_REVERSE: + wcove_typec_func(wcove, WCOVE_FUNC_ORIENTATION, + WCOVE_ORIENTATION_REVERSE); + default: + break; + } + + memset(&partner, 0, sizeof(partner)); + + switch (USBC_STATUS1_RSLT(status1)) { + case USBC_RSLT_SRC_DEFAULT: + typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_USB); + break; + case USBC_RSLT_SRC_1_5A: + typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_1_5A); + break; + case USBC_RSLT_SRC_3_0A: + typec_set_pwr_opmode(wcove->port, TYPEC_PWR_MODE_3_0A); + break; + case USBC_RSLT_SNK: + role = TYPEC_SOURCE; + break; + case USBC_RSLT_DEBUG_ACC: + partner.accessory = TYPEC_ACCESSORY_DEBUG; + break; + case USBC_RSLT_AUDIO_ACC: + partner.accessory = TYPEC_ACCESSORY_AUDIO; + break; + default: + dev_WARN(wcove->dev, "%s Undefined result\n", __func__); + goto err; + } + + if (role == TYPEC_SINK) { + wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_DEVICE); + typec_set_data_role(wcove->port, TYPEC_DEVICE); + typec_set_pwr_role(wcove->port, TYPEC_SINK); + } else { + wcove_typec_func(wcove, WCOVE_FUNC_ROLE, WCOVE_ROLE_HOST); + typec_set_pwr_role(wcove->port, TYPEC_SOURCE); + typec_set_data_role(wcove->port, TYPEC_HOST); + } + + wcove->partner = typec_register_partner(wcove->port, &partner); + if (!wcove->partner) + dev_err(wcove->dev, "failed register partner\n"); +out: + /* If either CC pins is requesting VCONN, we turn it on */ + if ((cc1_ctrl & USBC_CC_CTRL_VCONN_EN) || + (cc2_ctrl & USBC_CC_CTRL_VCONN_EN)) + wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, true); + else + wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VCONN, false); + + /* Relying on the FSM to know when we need to drive VBUS. */ + wcove_typec_func(wcove, WCOVE_FUNC_DRIVE_VBUS, + !!(status2 & USBC_STATUS2_VBUS_REQ)); +err: + /* REVISIT: Clear WhiskeyCove CHGR Type-C interrupt */ + regmap_write(wcove->regmap, WCOVE_CHGRIRQ0, BIT(5)); + + mutex_unlock(&wcove->lock); + return IRQ_HANDLED; +} + +static int wcove_typec_probe(struct platform_device *pdev) +{ + struct intel_soc_pmic *pmic = dev_get_drvdata(pdev->dev.parent); + struct wcove_typec *wcove; + unsigned int val; + int ret; + + wcove = devm_kzalloc(&pdev->dev, sizeof(*wcove), GFP_KERNEL); + if (!wcove) + return -ENOMEM; + + mutex_init(&wcove->lock); + wcove->dev = &pdev->dev; + wcove->regmap = pmic->regmap; + + ret = regmap_irq_get_virq(pmic->irq_chip_data_level2, + platform_get_irq(pdev, 0)); + if (ret < 0) + return ret; + + ret = devm_request_threaded_irq(&pdev->dev, ret, NULL, + wcove_typec_irq, IRQF_ONESHOT, + "wcove_typec", wcove); + if (ret) + return ret; + + if (!acpi_check_dsm(ACPI_HANDLE(&pdev->dev), uuid.b, 0, 0x1f)) { + dev_err(&pdev->dev, "Missing _DSM functions\n"); + return -ENODEV; + } + + wcove->cap.type = TYPEC_PORT_DRP; + wcove->cap.revision = USB_TYPEC_REV_1_1; + wcove->cap.prefer_role = TYPEC_NO_PREFERRED_ROLE; + + /* Make sure the PD PHY is disabled until USB PD is available */ + regmap_read(wcove->regmap, USBC_CONTROL3, &val); + regmap_write(wcove->regmap, USBC_CONTROL3, val | USBC_CONTROL3_PD_DIS); + + /* DRP mode without accessory support */ + regmap_read(wcove->regmap, USBC_CONTROL1, &val); + regmap_write(wcove->regmap, USBC_CONTROL1, USBC_CONTROL1_MODE_DRP(val)); + + wcove->port = typec_register_port(&pdev->dev, &wcove->cap); + if (!wcove->port) + return -ENODEV; + + /* Unmask everything */ + regmap_read(wcove->regmap, USBC_IRQMASK1, &val); + regmap_write(wcove->regmap, USBC_IRQMASK1, val & ~USBC_IRQMASK1_ALL); + regmap_read(wcove->regmap, USBC_IRQMASK2, &val); + regmap_write(wcove->regmap, USBC_IRQMASK2, val & ~USBC_IRQMASK2_ALL); + + platform_set_drvdata(pdev, wcove); + return 0; +} + +static int wcove_typec_remove(struct platform_device *pdev) +{ + struct wcove_typec *wcove = platform_get_drvdata(pdev); + unsigned int val; + + /* Mask everything */ + regmap_read(wcove->regmap, USBC_IRQMASK1, &val); + regmap_write(wcove->regmap, USBC_IRQMASK1, val | USBC_IRQMASK1_ALL); + regmap_read(wcove->regmap, USBC_IRQMASK2, &val); + regmap_write(wcove->regmap, USBC_IRQMASK2, val | USBC_IRQMASK2_ALL); + + typec_unregister_partner(wcove->partner); + typec_unregister_port(wcove->port); + return 0; +} + +static struct platform_driver wcove_typec_driver = { + .driver = { + .name = "bxt_wcove_usbc", + }, + .probe = wcove_typec_probe, + .remove = wcove_typec_remove, +}; + +module_platform_driver(wcove_typec_driver); + +MODULE_AUTHOR("Intel Corporation"); +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("WhiskeyCove PMIC USB Type-C PHY driver"); +MODULE_ALIAS("platform:bxt_wcove_usbc"); diff --git a/drivers/usb/usb-skeleton.c b/drivers/usb/usb-skeleton.c index 5133a0792eb0..bb0bd732e29a 100644 --- a/drivers/usb/usb-skeleton.c +++ b/drivers/usb/usb-skeleton.c @@ -491,16 +491,14 @@ static int skel_probe(struct usb_interface *interface, const struct usb_device_id *id) { struct usb_skel *dev; - struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; - size_t buffer_size; - int i; - int retval = -ENOMEM; + struct usb_endpoint_descriptor *bulk_in, *bulk_out; + int retval; /* allocate memory for our device state and initialize it */ dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) - goto error; + return -ENOMEM; + kref_init(&dev->kref); sema_init(&dev->limit_sem, WRITES_IN_FLIGHT); mutex_init(&dev->io_mutex); @@ -513,36 +511,29 @@ static int skel_probe(struct usb_interface *interface, /* set up the endpoint information */ /* use only the first bulk-in and bulk-out endpoints */ - iface_desc = interface->cur_altsetting; - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (!dev->bulk_in_endpointAddr && - usb_endpoint_is_bulk_in(endpoint)) { - /* we found a bulk in endpoint */ - buffer_size = usb_endpoint_maxp(endpoint); - dev->bulk_in_size = buffer_size; - dev->bulk_in_endpointAddr = endpoint->bEndpointAddress; - dev->bulk_in_buffer = kmalloc(buffer_size, GFP_KERNEL); - if (!dev->bulk_in_buffer) - goto error; - dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); - if (!dev->bulk_in_urb) - goto error; - } - - if (!dev->bulk_out_endpointAddr && - usb_endpoint_is_bulk_out(endpoint)) { - /* we found a bulk out endpoint */ - dev->bulk_out_endpointAddr = endpoint->bEndpointAddress; - } - } - if (!(dev->bulk_in_endpointAddr && dev->bulk_out_endpointAddr)) { + retval = usb_find_common_endpoints(interface->cur_altsetting, + &bulk_in, &bulk_out, NULL, NULL); + if (retval) { dev_err(&interface->dev, "Could not find both bulk-in and bulk-out endpoints\n"); goto error; } + dev->bulk_in_size = usb_endpoint_maxp(bulk_in); + dev->bulk_in_endpointAddr = bulk_in->bEndpointAddress; + dev->bulk_in_buffer = kmalloc(dev->bulk_in_size, GFP_KERNEL); + if (!dev->bulk_in_buffer) { + retval = -ENOMEM; + goto error; + } + dev->bulk_in_urb = usb_alloc_urb(0, GFP_KERNEL); + if (!dev->bulk_in_urb) { + retval = -ENOMEM; + goto error; + } + + dev->bulk_out_endpointAddr = bulk_out->bEndpointAddress; + /* save our data pointer in this interface device */ usb_set_intfdata(interface, dev); @@ -563,9 +554,9 @@ static int skel_probe(struct usb_interface *interface, return 0; error: - if (dev) - /* this frees allocated memory */ - kref_put(&dev->kref, skel_delete); + /* this frees allocated memory */ + kref_put(&dev->kref, skel_delete); + return retval; } diff --git a/drivers/usb/usbip/vhci_hcd.c b/drivers/usb/usbip/vhci_hcd.c index e4cb9f0625e8..5d8b2c261940 100644 --- a/drivers/usb/usbip/vhci_hcd.c +++ b/drivers/usb/usbip/vhci_hcd.c @@ -430,36 +430,8 @@ static int vhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue, return retval; } -static struct vhci_device *get_vdev(struct usb_device *udev) +static void vhci_tx_urb(struct urb *urb, struct vhci_device *vdev) { - struct platform_device *pdev; - struct usb_hcd *hcd; - struct vhci_hcd *vhci; - int pdev_nr, rhport; - - if (!udev) - return NULL; - - for (pdev_nr = 0; pdev_nr < vhci_num_controllers; pdev_nr++) { - pdev = *(vhci_pdevs + pdev_nr); - if (pdev == NULL) - continue; - hcd = platform_get_drvdata(pdev); - if (hcd == NULL) - continue; - vhci = hcd_to_vhci(hcd); - for (rhport = 0; rhport < VHCI_HC_PORTS; rhport++) { - if (vhci->vdev[rhport].udev == udev) - return &vhci->vdev[rhport]; - } - } - - return NULL; -} - -static void vhci_tx_urb(struct urb *urb) -{ - struct vhci_device *vdev = get_vdev(urb->dev); struct vhci_priv *priv; struct vhci_hcd *vhci; unsigned long flags; @@ -601,7 +573,7 @@ static int vhci_urb_enqueue(struct usb_hcd *hcd, struct urb *urb, } out: - vhci_tx_urb(urb); + vhci_tx_urb(urb, vdev); spin_unlock_irqrestore(&vhci->lock, flags); return 0; |