diff options
author | Olof Johansson <olof@lixom.net> | 2013-06-14 17:36:30 -0700 |
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committer | Olof Johansson <olof@lixom.net> | 2013-06-14 17:36:30 -0700 |
commit | a1149269646ae95c3985f5cf1c8a15b97bb30d8a (patch) | |
tree | f56db201ab0328feec913d90b7b60fef7054065a /drivers/usb/phy | |
parent | 5ae13ef4e1045d6ec5d445947b42c839b9731bec (diff) | |
parent | 1a87b01d3b18709ae240ec90ae612354dd44d9a9 (diff) | |
download | linux-a1149269646ae95c3985f5cf1c8a15b97bb30d8a.tar.bz2 |
Merge tag 'renesas-phy-rcar-usb-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into next/soc
From Simon Horman:
Renesas USB updates for v3.11
These updates are by Sergei Shtylyov to clean-up USB support
present for R8A7779/Marzen and then extend USB support coverage to
R8A7778/BOCK-W.
* tag 'renesas-phy-rcar-usb-for-v3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: BOCK-W: add USB support
ARM: shmobile: r8a7778: add USB support
phy-rcar-usb: add R8A7778 support
phy-rcar-usb: handle platform data
ARM: shmobile: Marzen: pass platform data to USB PHY device
phy-rcar-usb: add platform data
phy-rcar-usb: correct base address
ARM: shmobile: r8a7779: remove USB PHY 2nd memory resource
phy-rcar-usb: remove EHCI internal buffer setup
ARM: shmobile: r8a7779: setup EHCI internal buffer
ehci-platform: add pre_setup() method to platform data
ARM: shmobile: Marzen: move USB EHCI, OHCI, and PHY devices to R8A7779 code
Conflicts:
arch/arm/mach-shmobile/board-marzen.c
arch/arm/mach-shmobile/setup-r8a7778.c
Signed-off-by: Olof Johansson <olof@lixom.net>
Diffstat (limited to 'drivers/usb/phy')
-rw-r--r-- | drivers/usb/phy/Kconfig | 10 | ||||
-rw-r--r-- | drivers/usb/phy/phy-rcar-usb.c | 128 |
2 files changed, 87 insertions, 51 deletions
diff --git a/drivers/usb/phy/Kconfig b/drivers/usb/phy/Kconfig index 7ef3eb8617a6..13c09c299f15 100644 --- a/drivers/usb/phy/Kconfig +++ b/drivers/usb/phy/Kconfig @@ -180,15 +180,15 @@ config USB_MXS_PHY MXS Phy is used by some of the i.MX SoCs, for example imx23/28/6x. config USB_RCAR_PHY - tristate "Renesas R-Car USB phy support" + tristate "Renesas R-Car USB PHY support" depends on USB || USB_GADGET help - Say Y here to add support for the Renesas R-Car USB phy driver. - This chip is typically used as USB phy for USB host, gadget. - This driver supports: R8A7779 + Say Y here to add support for the Renesas R-Car USB common PHY driver. + This chip is typically used as USB PHY for USB host, gadget. + This driver supports R8A7778 and R8A7779. To compile this driver as a module, choose M here: the - module will be called rcar-phy. + module will be called phy-rcar-usb. config USB_ULPI bool "Generic ULPI Transceiver Driver" diff --git a/drivers/usb/phy/phy-rcar-usb.c b/drivers/usb/phy/phy-rcar-usb.c index a35681b0c501..ae909408958d 100644 --- a/drivers/usb/phy/phy-rcar-usb.c +++ b/drivers/usb/phy/phy-rcar-usb.c @@ -1,8 +1,9 @@ /* * Renesas R-Car USB phy driver * - * Copyright (C) 2012 Renesas Solutions Corp. + * Copyright (C) 2012-2013 Renesas Solutions Corp. * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * Copyright (C) 2013 Cogent Embedded, Inc. * * 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 @@ -15,17 +16,41 @@ #include <linux/platform_device.h> #include <linux/spinlock.h> #include <linux/module.h> - -/* USBH common register */ -#define USBPCTRL0 0x0800 -#define USBPCTRL1 0x0804 -#define USBST 0x0808 -#define USBEH0 0x080C -#define USBOH0 0x081C -#define USBCTL0 0x0858 -#define EIIBC1 0x0094 -#define EIIBC2 0x009C - +#include <linux/platform_data/usb-rcar-phy.h> + +/* REGS block */ +#define USBPCTRL0 0x00 +#define USBPCTRL1 0x04 +#define USBST 0x08 +#define USBEH0 0x0C +#define USBOH0 0x1C +#define USBCTL0 0x58 + +/* High-speed signal quality characteristic control registers (R8A7778 only) */ +#define HSQCTL1 0x24 +#define HSQCTL2 0x28 + +/* USBPCTRL0 */ +#define OVC2 (1 << 10) /* (R8A7779 only) */ + /* Switches the OVC input pin for port 2: */ + /* 1: USB_OVC2, 0: OVC2 */ +#define OVC1_VBUS1 (1 << 9) /* Switches the OVC input pin for port 1: */ + /* 1: USB_OVC1, 0: OVC1/VBUS1 */ + /* Function mode: set to 0 */ +#define OVC0 (1 << 8) /* Switches the OVC input pin for port 0: */ + /* 1: USB_OVC0 pin, 0: OVC0 */ +#define OVC2_ACT (1 << 6) /* (R8A7779 only) */ + /* Host mode: OVC2 polarity: */ + /* 1: active-high, 0: active-low */ +#define PENC (1 << 4) /* Function mode: output level of PENC1 pin: */ + /* 1: high, 0: low */ +#define OVC0_ACT (1 << 3) /* Host mode: OVC0 polarity: */ + /* 1: active-high, 0: active-low */ +#define OVC1_ACT (1 << 1) /* Host mode: OVC1 polarity: */ + /* 1: active-high, 0: active-low */ + /* Function mode: be sure to set to 1 */ +#define PORT1 (1 << 0) /* Selects port 1 mode: */ + /* 1: function, 0: host */ /* USBPCTRL1 */ #define PHY_RST (1 << 2) #define PLL_ENB (1 << 1) @@ -58,8 +83,10 @@ static int rcar_usb_phy_init(struct usb_phy *phy) { struct rcar_usb_phy_priv *priv = usb_phy_to_priv(phy); struct device *dev = phy->dev; + struct rcar_phy_platform_data *pdata = dev->platform_data; void __iomem *reg0 = priv->reg0; void __iomem *reg1 = priv->reg1; + static const u8 ovcn_act[] = { OVC0_ACT, OVC1_ACT, OVC2_ACT }; int i; u32 val; unsigned long flags; @@ -77,7 +104,16 @@ static int rcar_usb_phy_init(struct usb_phy *phy) /* (2) start USB-PHY internal PLL */ iowrite32(PHY_ENB | PLL_ENB, (reg0 + USBPCTRL1)); - /* (3) USB module status check */ + /* (3) set USB-PHY in accord with the conditions of usage */ + if (reg1) { + u32 hsqctl1 = pdata->ferrite_bead ? 0x41 : 0; + u32 hsqctl2 = pdata->ferrite_bead ? 0x0d : 7; + + iowrite32(hsqctl1, reg1 + HSQCTL1); + iowrite32(hsqctl2, reg1 + HSQCTL2); + } + + /* (4) USB module status check */ for (i = 0; i < 1024; i++) { udelay(10); val = ioread32(reg0 + USBST); @@ -90,24 +126,24 @@ static int rcar_usb_phy_init(struct usb_phy *phy) goto phy_init_end; } - /* (4) USB-PHY reset clear */ + /* (5) USB-PHY reset clear */ iowrite32(PHY_ENB | PLL_ENB | PHY_RST, (reg0 + USBPCTRL1)); - /* set platform specific port settings */ - iowrite32(0x00000000, (reg0 + USBPCTRL0)); - - /* - * EHCI IP internal buffer setting - * EHCI IP internal buffer enable - * - * These are recommended value of a datasheet - * see [USB :: EHCI internal buffer setting] - */ - iowrite32(0x00ff0040, (reg0 + EIIBC1)); - iowrite32(0x00ff0040, (reg1 + EIIBC1)); - - iowrite32(0x00000001, (reg0 + EIIBC2)); - iowrite32(0x00000001, (reg1 + EIIBC2)); + /* Board specific port settings */ + val = 0; + if (pdata->port1_func) + val |= PORT1; + if (pdata->penc1) + val |= PENC; + for (i = 0; i < 3; i++) { + /* OVCn bits follow each other in the right order */ + if (pdata->ovc_pin[i].select_3_3v) + val |= OVC0 << i; + /* OVCn_ACT bits are spaced by irregular intervals */ + if (pdata->ovc_pin[i].active_high) + val |= ovcn_act[i]; + } + iowrite32(val, (reg0 + USBPCTRL0)); /* * Bus alignment settings @@ -134,10 +170,8 @@ static void rcar_usb_phy_shutdown(struct usb_phy *phy) spin_lock_irqsave(&priv->lock, flags); - if (priv->counter-- == 1) { /* last user */ - iowrite32(0x00000000, (reg0 + USBPCTRL0)); + if (priv->counter-- == 1) /* last user */ iowrite32(0x00000000, (reg0 + USBPCTRL1)); - } spin_unlock_irqrestore(&priv->lock, flags); } @@ -147,27 +181,29 @@ static int rcar_usb_phy_probe(struct platform_device *pdev) struct rcar_usb_phy_priv *priv; struct resource *res0, *res1; struct device *dev = &pdev->dev; - void __iomem *reg0, *reg1; + void __iomem *reg0, *reg1 = NULL; int ret; + if (!pdev->dev.platform_data) { + dev_err(dev, "No platform data\n"); + return -EINVAL; + } + res0 = platform_get_resource(pdev, IORESOURCE_MEM, 0); - res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); - if (!res0 || !res1) { + if (!res0) { dev_err(dev, "Not enough platform resources\n"); return -EINVAL; } - /* - * CAUTION - * - * Because this phy address is also mapped under OHCI/EHCI address area, - * this driver can't use devm_request_and_ioremap(dev, res) here - */ - reg0 = devm_ioremap_nocache(dev, res0->start, resource_size(res0)); - reg1 = devm_ioremap_nocache(dev, res1->start, resource_size(res1)); - if (!reg0 || !reg1) { - dev_err(dev, "ioremap error\n"); - return -ENOMEM; + reg0 = devm_ioremap_resource(dev, res0); + if (IS_ERR(reg0)) + return PTR_ERR(reg0); + + res1 = platform_get_resource(pdev, IORESOURCE_MEM, 1); + if (res1) { + reg1 = devm_ioremap_resource(dev, res1); + if (IS_ERR(reg1)) + return PTR_ERR(reg1); } priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); |