diff options
Diffstat (limited to 'drivers/usb')
28 files changed, 4466 insertions, 249 deletions
diff --git a/drivers/usb/Kconfig b/drivers/usb/Kconfig index 6585f0b67801..b8e70a982fd4 100644 --- a/drivers/usb/Kconfig +++ b/drivers/usb/Kconfig @@ -64,6 +64,7 @@ config USB_ARCH_HAS_EHCI default y if ARCH_OMAP3 default y if ARCH_VT8500 default y if PLAT_SPEAR + default y if ARCH_MSM default PCI # ARM SA1111 chips have a non-PCI based "OHCI-compatible" USB host interface. diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 23fac3857477..a776c35ca980 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -427,8 +427,8 @@ config USB_FSL_QE default USB_GADGET select USB_GADGET_SELECTED -config USB_GADGET_CI13XXX - boolean "MIPS USB CI13xxx" +config USB_GADGET_CI13XXX_PCI + boolean "MIPS USB CI13xxx PCI UDC" depends on PCI select USB_GADGET_DUALSPEED help @@ -439,9 +439,9 @@ config USB_GADGET_CI13XXX dynamically linked module called "ci13xxx_udc" and force all gadget drivers to also be dynamically linked. -config USB_CI13XXX +config USB_CI13XXX_PCI tristate - depends on USB_GADGET_CI13XXX + depends on USB_GADGET_CI13XXX_PCI default USB_GADGET select USB_GADGET_SELECTED @@ -531,6 +531,27 @@ config USB_EG20T default USB_GADGET select USB_GADGET_SELECTED +config USB_GADGET_CI13XXX_MSM + boolean "MIPS USB CI13xxx for MSM" + depends on ARCH_MSM + select USB_GADGET_DUALSPEED + select USB_MSM_OTG_72K + help + MSM SoC has chipidea USB controller. This driver uses + ci13xxx_udc core. + This driver depends on OTG driver for PHY initialization, + clock management, powering up VBUS, and power management. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "ci13xxx_msm" and force all + gadget drivers to also be dynamically linked. + +config USB_CI13XXX_MSM + tristate + depends on USB_GADGET_CI13XXX_MSM + default USB_GADGET + select USB_GADGET_SELECTED + # # LAST -- dummy/emulated controller # @@ -720,6 +741,19 @@ config USB_ETH_EEM If you say "y" here, the Ethernet gadget driver will use the EEM protocol rather than ECM. If unsure, say "n". +config USB_G_NCM + tristate "Network Control Model (NCM) support" + depends on NET + select CRC32 + help + This driver implements USB CDC NCM subclass standard. NCM is + an advanced protocol for Ethernet encapsulation, allows grouping + of several ethernet frames into one USB transfer and diffferent + alignment possibilities. + + Say "y" to link the driver statically, or "m" to build a + dynamically linked module called "g_ncm". + config USB_GADGETFS tristate "Gadget Filesystem (EXPERIMENTAL)" depends on EXPERIMENTAL diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index a3e6b90c11d7..55f5e8ae5924 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -21,12 +21,13 @@ fsl_usb2_udc-$(CONFIG_ARCH_MXC) += fsl_mxc_udc.o obj-$(CONFIG_USB_M66592) += m66592-udc.o obj-$(CONFIG_USB_R8A66597) += r8a66597-udc.o obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o -obj-$(CONFIG_USB_CI13XXX) += ci13xxx_udc.o +obj-$(CONFIG_USB_CI13XXX_PCI) += ci13xxx_pci.o obj-$(CONFIG_USB_S3C_HSOTG) += s3c-hsotg.o obj-$(CONFIG_USB_LANGWELL) += langwell_udc.o obj-$(CONFIG_USB_EG20T) += pch_udc.o obj-$(CONFIG_USB_PXA_U2O) += mv_udc.o mv_udc-y := mv_udc_core.o mv_udc_phy.o +obj-$(CONFIG_USB_CI13XXX_MSM) += ci13xxx_msm.o # # USB gadget drivers @@ -46,6 +47,7 @@ g_hid-y := hid.o g_dbgp-y := dbgp.o g_nokia-y := nokia.o g_webcam-y := webcam.o +g_ncm-y := ncm.o obj-$(CONFIG_USB_ZERO) += g_zero.o obj-$(CONFIG_USB_AUDIO) += g_audio.o @@ -63,3 +65,4 @@ obj-$(CONFIG_USB_G_DBGP) += g_dbgp.o obj-$(CONFIG_USB_G_MULTI) += g_multi.o obj-$(CONFIG_USB_G_NOKIA) += g_nokia.o obj-$(CONFIG_USB_G_WEBCAM) += g_webcam.o +obj-$(CONFIG_USB_G_NCM) += g_ncm.o diff --git a/drivers/usb/gadget/ci13xxx_msm.c b/drivers/usb/gadget/ci13xxx_msm.c new file mode 100644 index 000000000000..139ac9419597 --- /dev/null +++ b/drivers/usb/gadget/ci13xxx_msm.c @@ -0,0 +1,134 @@ +/* Copyright (c) 2010, Code Aurora Forum. 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/usb/msm_hsusb_hw.h> +#include <linux/usb/ulpi.h> + +#include "ci13xxx_udc.c" + +#define MSM_USB_BASE (udc->regs) + +static irqreturn_t msm_udc_irq(int irq, void *data) +{ + return udc_irq(); +} + +static void ci13xxx_msm_notify_event(struct ci13xxx *udc, unsigned event) +{ + struct device *dev = udc->gadget.dev.parent; + int val; + + switch (event) { + case CI13XXX_CONTROLLER_RESET_EVENT: + dev_dbg(dev, "CI13XXX_CONTROLLER_RESET_EVENT received\n"); + writel(0, USB_AHBBURST); + writel(0, USB_AHBMODE); + break; + case CI13XXX_CONTROLLER_STOPPED_EVENT: + dev_dbg(dev, "CI13XXX_CONTROLLER_STOPPED_EVENT received\n"); + /* + * Put the transceiver in non-driving mode. Otherwise host + * may not detect soft-disconnection. + */ + val = otg_io_read(udc->transceiver, ULPI_FUNC_CTRL); + val &= ~ULPI_FUNC_CTRL_OPMODE_MASK; + val |= ULPI_FUNC_CTRL_OPMODE_NONDRIVING; + otg_io_write(udc->transceiver, val, ULPI_FUNC_CTRL); + break; + default: + dev_dbg(dev, "unknown ci13xxx_udc event\n"); + break; + } +} + +static struct ci13xxx_udc_driver ci13xxx_msm_udc_driver = { + .name = "ci13xxx_msm", + .flags = CI13XXX_REGS_SHARED | + CI13XXX_REQUIRE_TRANSCEIVER | + CI13XXX_PULLUP_ON_VBUS | + CI13XXX_DISABLE_STREAMING, + + .notify_event = ci13xxx_msm_notify_event, +}; + +static int ci13xxx_msm_probe(struct platform_device *pdev) +{ + struct resource *res; + void __iomem *regs; + int irq; + int ret; + + dev_dbg(&pdev->dev, "ci13xxx_msm_probe\n"); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to get platform resource mem\n"); + return -ENXIO; + } + + regs = ioremap(res->start, resource_size(res)); + if (!regs) { + dev_err(&pdev->dev, "ioremap failed\n"); + return -ENOMEM; + } + + ret = udc_probe(&ci13xxx_msm_udc_driver, &pdev->dev, regs); + if (ret < 0) { + dev_err(&pdev->dev, "udc_probe failed\n"); + goto iounmap; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "IRQ not found\n"); + ret = -ENXIO; + goto udc_remove; + } + + ret = request_irq(irq, msm_udc_irq, IRQF_SHARED, pdev->name, pdev); + if (ret < 0) { + dev_err(&pdev->dev, "request_irq failed\n"); + goto udc_remove; + } + + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +udc_remove: + udc_remove(); +iounmap: + iounmap(regs); + + return ret; +} + +static struct platform_driver ci13xxx_msm_driver = { + .probe = ci13xxx_msm_probe, + .driver = { .name = "msm_hsusb", }, +}; + +static int __init ci13xxx_msm_init(void) +{ + return platform_driver_register(&ci13xxx_msm_driver); +} +module_init(ci13xxx_msm_init); diff --git a/drivers/usb/gadget/ci13xxx_pci.c b/drivers/usb/gadget/ci13xxx_pci.c new file mode 100644 index 000000000000..883ab5e832d1 --- /dev/null +++ b/drivers/usb/gadget/ci13xxx_pci.c @@ -0,0 +1,176 @@ +/* + * ci13xxx_pci.c - MIPS USB IP core family device controller + * + * Copyright (C) 2008 Chipidea - MIPS Technologies, Inc. All rights reserved. + * + * Author: David Lopo + * + * 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/module.h> +#include <linux/pci.h> + +#include "ci13xxx_udc.c" + +/* driver name */ +#define UDC_DRIVER_NAME "ci13xxx_pci" + +/****************************************************************************** + * PCI block + *****************************************************************************/ +/** + * ci13xxx_pci_irq: interrut handler + * @irq: irq number + * @pdev: USB Device Controller interrupt source + * + * This function returns IRQ_HANDLED if the IRQ has been handled + * This is an ISR don't trace, use attribute interface instead + */ +static irqreturn_t ci13xxx_pci_irq(int irq, void *pdev) +{ + if (irq == 0) { + dev_err(&((struct pci_dev *)pdev)->dev, "Invalid IRQ0 usage!"); + return IRQ_HANDLED; + } + return udc_irq(); +} + +static struct ci13xxx_udc_driver ci13xxx_pci_udc_driver = { + .name = UDC_DRIVER_NAME, +}; + +/** + * ci13xxx_pci_probe: PCI probe + * @pdev: USB device controller being probed + * @id: PCI hotplug ID connecting controller to UDC framework + * + * This function returns an error code + * Allocates basic PCI resources for this USB device controller, and then + * invokes the udc_probe() method to start the UDC associated with it + */ +static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, + const struct pci_device_id *id) +{ + void __iomem *regs = NULL; + int retval = 0; + + if (id == NULL) + return -EINVAL; + + retval = pci_enable_device(pdev); + if (retval) + goto done; + + if (!pdev->irq) { + dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); + retval = -ENODEV; + goto disable_device; + } + + retval = pci_request_regions(pdev, UDC_DRIVER_NAME); + if (retval) + goto disable_device; + + /* BAR 0 holds all the registers */ + regs = pci_iomap(pdev, 0, 0); + if (!regs) { + dev_err(&pdev->dev, "Error mapping memory!"); + retval = -EFAULT; + goto release_regions; + } + pci_set_drvdata(pdev, (__force void *)regs); + + pci_set_master(pdev); + pci_try_set_mwi(pdev); + + retval = udc_probe(&ci13xxx_pci_udc_driver, &pdev->dev, regs); + if (retval) + goto iounmap; + + /* our device does not have MSI capability */ + + retval = request_irq(pdev->irq, ci13xxx_pci_irq, IRQF_SHARED, + UDC_DRIVER_NAME, pdev); + if (retval) + goto gadget_remove; + + return 0; + + gadget_remove: + udc_remove(); + iounmap: + pci_iounmap(pdev, regs); + release_regions: + pci_release_regions(pdev); + disable_device: + pci_disable_device(pdev); + done: + return retval; +} + +/** + * ci13xxx_pci_remove: PCI remove + * @pdev: USB Device Controller being removed + * + * Reverses the effect of ci13xxx_pci_probe(), + * first invoking the udc_remove() and then releases + * all PCI resources allocated for this USB device controller + */ +static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) +{ + free_irq(pdev->irq, pdev); + udc_remove(); + pci_iounmap(pdev, (__force void __iomem *)pci_get_drvdata(pdev)); + pci_release_regions(pdev); + pci_disable_device(pdev); +} + +/** + * PCI device table + * PCI device structure + * + * Check "pci.h" for details + */ +static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { + { PCI_DEVICE(0x153F, 0x1004) }, + { PCI_DEVICE(0x153F, 0x1006) }, + { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } +}; +MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); + +static struct pci_driver ci13xxx_pci_driver = { + .name = UDC_DRIVER_NAME, + .id_table = ci13xxx_pci_id_table, + .probe = ci13xxx_pci_probe, + .remove = __devexit_p(ci13xxx_pci_remove), +}; + +/** + * ci13xxx_pci_init: module init + * + * Driver load + */ +static int __init ci13xxx_pci_init(void) +{ + return pci_register_driver(&ci13xxx_pci_driver); +} +module_init(ci13xxx_pci_init); + +/** + * ci13xxx_pci_exit: module exit + * + * Driver unload + */ +static void __exit ci13xxx_pci_exit(void) +{ + pci_unregister_driver(&ci13xxx_pci_driver); +} +module_exit(ci13xxx_pci_exit); + +MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); +MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); +MODULE_LICENSE("GPL"); +MODULE_VERSION("June 2008"); diff --git a/drivers/usb/gadget/ci13xxx_udc.c b/drivers/usb/gadget/ci13xxx_udc.c index 98b36fc88c77..f200e472e476 100644 --- a/drivers/usb/gadget/ci13xxx_udc.c +++ b/drivers/usb/gadget/ci13xxx_udc.c @@ -22,7 +22,6 @@ * - ENDPT: endpoint operations (Gadget API) * - GADGET: gadget operations (Gadget API) * - BUS: bus glue code, bus abstraction layer - * - PCI: PCI core interface and PCI resources (interrupts, memory...) * * Compile Options * - CONFIG_USB_GADGET_DEBUG_FILES: enable debug facilities @@ -60,11 +59,11 @@ #include <linux/io.h> #include <linux/irq.h> #include <linux/kernel.h> -#include <linux/module.h> -#include <linux/pci.h> #include <linux/slab.h> +#include <linux/pm_runtime.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> +#include <linux/usb/otg.h> #include "ci13xxx_udc.h" @@ -75,9 +74,6 @@ /* ctrl register bank access */ static DEFINE_SPINLOCK(udc_lock); -/* driver name */ -#define UDC_DRIVER_NAME "ci13xxx_udc" - /* control endpoint description */ static const struct usb_endpoint_descriptor ctrl_endpt_desc = { @@ -132,6 +128,9 @@ static struct { size_t size; /* bank size */ } hw_bank; +/* MSM specific */ +#define ABS_AHBBURST (0x0090UL) +#define ABS_AHBMODE (0x0098UL) /* UDC register map */ #define ABS_CAPLENGTH (0x100UL) #define ABS_HCCPARAMS (0x108UL) @@ -248,13 +247,7 @@ static u32 hw_ctest_and_write(u32 addr, u32 mask, u32 data) return (reg & mask) >> ffs_nr(mask); } -/** - * hw_device_reset: resets chip (execute without interruption) - * @base: register base address - * - * This function returns an error code - */ -static int hw_device_reset(void __iomem *base) +static int hw_device_init(void __iomem *base) { u32 reg; @@ -271,6 +264,28 @@ static int hw_device_reset(void __iomem *base) hw_bank.size += CAP_LAST; hw_bank.size /= sizeof(u32); + reg = hw_aread(ABS_DCCPARAMS, DCCPARAMS_DEN) >> ffs_nr(DCCPARAMS_DEN); + if (reg == 0 || reg > ENDPT_MAX) + return -ENODEV; + + hw_ep_max = reg; /* cache hw ENDPT_MAX */ + + /* setup lock mode ? */ + + /* ENDPTSETUPSTAT is '0' by default */ + + /* HCSPARAMS.bf.ppc SHOULD BE zero for device */ + + return 0; +} +/** + * hw_device_reset: resets chip (execute without interruption) + * @base: register base address + * + * This function returns an error code + */ +static int hw_device_reset(struct ci13xxx *udc) +{ /* should flush & stop before reset */ hw_cwrite(CAP_ENDPTFLUSH, ~0, ~0); hw_cwrite(CAP_USBCMD, USBCMD_RS, 0); @@ -279,6 +294,14 @@ static int hw_device_reset(void __iomem *base) while (hw_cread(CAP_USBCMD, USBCMD_RST)) udelay(10); /* not RTOS friendly */ + + if (udc->udc_driver->notify_event) + udc->udc_driver->notify_event(udc, + CI13XXX_CONTROLLER_RESET_EVENT); + + if (udc->udc_driver->flags && CI13XXX_DISABLE_STREAMING) + hw_cwrite(CAP_USBMODE, USBMODE_SDIS, USBMODE_SDIS); + /* USBMODE should be configured step by step */ hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_IDLE); hw_cwrite(CAP_USBMODE, USBMODE_CM, USBMODE_CM_DEVICE); @@ -290,18 +313,6 @@ static int hw_device_reset(void __iomem *base) return -ENODEV; } - reg = hw_aread(ABS_DCCPARAMS, DCCPARAMS_DEN) >> ffs_nr(DCCPARAMS_DEN); - if (reg == 0 || reg > ENDPT_MAX) - return -ENODEV; - - hw_ep_max = reg; /* cache hw ENDPT_MAX */ - - /* setup lock mode ? */ - - /* ENDPTSETUPSTAT is '0' by default */ - - /* HCSPARAMS.bf.ppc SHOULD BE zero for device */ - return 0; } @@ -1557,8 +1568,6 @@ __acquires(mEp->lock) * Caller must hold lock */ static int _gadget_stop_activity(struct usb_gadget *gadget) -__releases(udc->lock) -__acquires(udc->lock) { struct usb_ep *ep; struct ci13xxx *udc = container_of(gadget, struct ci13xxx, gadget); @@ -1570,8 +1579,6 @@ __acquires(udc->lock) if (gadget == NULL) return -EINVAL; - spin_unlock(udc->lock); - /* flush all endpoints */ gadget_for_each_ep(ep, gadget) { usb_ep_fifo_flush(ep); @@ -1591,8 +1598,6 @@ __acquires(udc->lock) mEp->status = NULL; } - spin_lock(udc->lock); - return 0; } @@ -1621,6 +1626,7 @@ __acquires(udc->lock) dbg_event(0xFF, "BUS RST", 0); + spin_unlock(udc->lock); retval = _gadget_stop_activity(&udc->gadget); if (retval) goto done; @@ -1629,10 +1635,9 @@ __acquires(udc->lock) if (retval) goto done; - spin_unlock(udc->lock); retval = usb_ep_enable(&mEp->ep, &ctrl_endpt_desc); if (!retval) { - mEp->status = usb_ep_alloc_request(&mEp->ep, GFP_KERNEL); + mEp->status = usb_ep_alloc_request(&mEp->ep, GFP_ATOMIC); if (mEp->status == NULL) { usb_ep_disable(&mEp->ep); retval = -ENOMEM; @@ -2061,7 +2066,6 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) { struct ci13xxx_ep *mEp = container_of(ep, struct ci13xxx_ep, ep); struct ci13xxx_req *mReq = NULL; - unsigned long flags; trace("%p, %i", ep, gfp_flags); @@ -2070,8 +2074,6 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) return NULL; } - spin_lock_irqsave(mEp->lock, flags); - mReq = kzalloc(sizeof(struct ci13xxx_req), gfp_flags); if (mReq != NULL) { INIT_LIST_HEAD(&mReq->queue); @@ -2086,8 +2088,6 @@ static struct usb_request *ep_alloc_request(struct usb_ep *ep, gfp_t gfp_flags) dbg_event(_usb_addr(mEp), "ALLOC", mReq == NULL); - spin_unlock_irqrestore(mEp->lock, flags); - return (mReq == NULL) ? NULL : &mReq->req; } @@ -2332,12 +2332,47 @@ static const struct usb_ep_ops usb_ep_ops = { /****************************************************************************** * GADGET block *****************************************************************************/ +static int ci13xxx_vbus_session(struct usb_gadget *_gadget, int is_active) +{ + struct ci13xxx *udc = container_of(_gadget, struct ci13xxx, gadget); + unsigned long flags; + int gadget_ready = 0; + + if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS)) + return -EOPNOTSUPP; + + spin_lock_irqsave(udc->lock, flags); + udc->vbus_active = is_active; + if (udc->driver) + gadget_ready = 1; + spin_unlock_irqrestore(udc->lock, flags); + + if (gadget_ready) { + if (is_active) { + pm_runtime_get_sync(&_gadget->dev); + hw_device_reset(udc); + hw_device_state(udc->ci13xxx_ep[0].qh[RX].dma); + } else { + hw_device_state(0); + if (udc->udc_driver->notify_event) + udc->udc_driver->notify_event(udc, + CI13XXX_CONTROLLER_STOPPED_EVENT); + _gadget_stop_activity(&udc->gadget); + pm_runtime_put_sync(&_gadget->dev); + } + } + + return 0; +} + /** * Device operations part of the API to the USB controller hardware, * which don't involve endpoints (or i/o) * Check "usb_gadget.h" for details */ -static const struct usb_gadget_ops usb_gadget_ops; +static const struct usb_gadget_ops usb_gadget_ops = { + .vbus_session = ci13xxx_vbus_session, +}; /** * usb_gadget_probe_driver: register a gadget driver @@ -2390,7 +2425,6 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, info("hw_ep_max = %d", hw_ep_max); udc->driver = driver; - udc->gadget.ops = NULL; udc->gadget.dev.driver = NULL; retval = 0; @@ -2410,9 +2444,11 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, /* this allocation cannot be random */ for (k = RX; k <= TX; k++) { INIT_LIST_HEAD(&mEp->qh[k].queue); + spin_unlock_irqrestore(udc->lock, flags); mEp->qh[k].ptr = dma_pool_alloc(udc->qh_pool, GFP_KERNEL, &mEp->qh[k].dma); + spin_lock_irqsave(udc->lock, flags); if (mEp->qh[k].ptr == NULL) retval = -ENOMEM; else @@ -2429,7 +2465,6 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, /* bind gadget */ driver->driver.bus = NULL; - udc->gadget.ops = &usb_gadget_ops; udc->gadget.dev.driver = &driver->driver; spin_unlock_irqrestore(udc->lock, flags); @@ -2437,12 +2472,24 @@ int usb_gadget_probe_driver(struct usb_gadget_driver *driver, spin_lock_irqsave(udc->lock, flags); if (retval) { - udc->gadget.ops = NULL; udc->gadget.dev.driver = NULL; goto done; } + pm_runtime_get_sync(&udc->gadget.dev); + if (udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) { + if (udc->vbus_active) { + if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) + hw_device_reset(udc); + } else { + pm_runtime_put_sync(&udc->gadget.dev); + goto done; + } + } + retval = hw_device_state(udc->ci13xxx_ep[0].qh[RX].dma); + if (retval) + pm_runtime_put_sync(&udc->gadget.dev); done: spin_unlock_irqrestore(udc->lock, flags); @@ -2475,19 +2522,22 @@ int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) spin_lock_irqsave(udc->lock, flags); - hw_device_state(0); - - /* unbind gadget */ - if (udc->gadget.ops != NULL) { + if (!(udc->udc_driver->flags & CI13XXX_PULLUP_ON_VBUS) || + udc->vbus_active) { + hw_device_state(0); + if (udc->udc_driver->notify_event) + udc->udc_driver->notify_event(udc, + CI13XXX_CONTROLLER_STOPPED_EVENT); _gadget_stop_activity(&udc->gadget); + pm_runtime_put(&udc->gadget.dev); + } - spin_unlock_irqrestore(udc->lock, flags); - driver->unbind(&udc->gadget); /* MAY SLEEP */ - spin_lock_irqsave(udc->lock, flags); + /* unbind gadget */ + spin_unlock_irqrestore(udc->lock, flags); + driver->unbind(&udc->gadget); /* MAY SLEEP */ + spin_lock_irqsave(udc->lock, flags); - udc->gadget.ops = NULL; - udc->gadget.dev.driver = NULL; - } + udc->gadget.dev.driver = NULL; /* free resources */ for (i = 0; i < hw_ep_max; i++) { @@ -2544,6 +2594,14 @@ static irqreturn_t udc_irq(void) } spin_lock(udc->lock); + + if (udc->udc_driver->flags & CI13XXX_REGS_SHARED) { + if (hw_cread(CAP_USBMODE, USBMODE_CM) != + USBMODE_CM_DEVICE) { + spin_unlock(udc->lock); + return IRQ_NONE; + } + } intr = hw_test_and_clear_intr_active(); if (intr) { isr_statistics.hndl.buf[isr_statistics.hndl.idx++] = intr; @@ -2602,14 +2660,16 @@ static void udc_release(struct device *dev) * No interrupts active, the IRQ has not been requested yet * Kernel assumes 32-bit DMA operations by default, no need to dma_set_mask */ -static int udc_probe(struct device *dev, void __iomem *regs, const char *name) +static int udc_probe(struct ci13xxx_udc_driver *driver, struct device *dev, + void __iomem *regs) { struct ci13xxx *udc; int retval = 0; trace("%p, %p, %p", dev, regs, name); - if (dev == NULL || regs == NULL || name == NULL) + if (dev == NULL || regs == NULL || driver == NULL || + driver->name == NULL) return -EINVAL; udc = kzalloc(sizeof(struct ci13xxx), GFP_KERNEL); @@ -2617,42 +2677,77 @@ static int udc_probe(struct device *dev, void __iomem *regs, const char *name) return -ENOMEM; udc->lock = &udc_lock; + udc->regs = regs; + udc->udc_driver = driver; - retval = hw_device_reset(regs); - if (retval) - goto done; - - udc->gadget.ops = NULL; + udc->gadget.ops = &usb_gadget_ops; udc->gadget.speed = USB_SPEED_UNKNOWN; udc->gadget.is_dualspeed = 1; udc->gadget.is_otg = 0; - udc->gadget.name = name; + udc->gadget.name = driver->name; INIT_LIST_HEAD(&udc->gadget.ep_list); udc->gadget.ep0 = NULL; dev_set_name(&udc->gadget.dev, "gadget"); udc->gadget.dev.dma_mask = dev->dma_mask; + udc->gadget.dev.coherent_dma_mask = dev->coherent_dma_mask; udc->gadget.dev.parent = dev; udc->gadget.dev.release = udc_release; + retval = hw_device_init(regs); + if (retval < 0) + goto free_udc; + + udc->transceiver = otg_get_transceiver(); + + if (udc->udc_driver->flags & CI13XXX_REQUIRE_TRANSCEIVER) { + if (udc->transceiver == NULL) { + retval = -ENODEV; + goto free_udc; + } + } + + if (!(udc->udc_driver->flags & CI13XXX_REGS_SHARED)) { + retval = hw_device_reset(udc); + if (retval) + goto put_transceiver; + } + retval = device_register(&udc->gadget.dev); - if (retval) - goto done; + if (retval) { + put_device(&udc->gadget.dev); + goto put_transceiver; + } #ifdef CONFIG_USB_GADGET_DEBUG_FILES retval = dbg_create_files(&udc->gadget.dev); #endif - if (retval) { - device_unregister(&udc->gadget.dev); - goto done; + if (retval) + goto unreg_device; + + if (udc->transceiver) { + retval = otg_set_peripheral(udc->transceiver, &udc->gadget); + if (retval) + goto remove_dbg; } + pm_runtime_no_callbacks(&udc->gadget.dev); + pm_runtime_enable(&udc->gadget.dev); _udc = udc; return retval; - done: err("error = %i", retval); +remove_dbg: +#ifdef CONFIG_USB_GADGET_DEBUG_FILES + dbg_remove_files(&udc->gadget.dev); +#endif +unreg_device: + device_unregister(&udc->gadget.dev); +put_transceiver: + if (udc->transceiver) + otg_put_transceiver(udc->transceiver); +free_udc: kfree(udc); _udc = NULL; return retval; @@ -2672,6 +2767,10 @@ static void udc_remove(void) return; } + if (udc->transceiver) { + otg_set_peripheral(udc->transceiver, &udc->gadget); + otg_put_transceiver(udc->transceiver); + } #ifdef CONFIG_USB_GADGET_DEBUG_FILES dbg_remove_files(&udc->gadget.dev); #endif @@ -2680,156 +2779,3 @@ static void udc_remove(void) kfree(udc); _udc = NULL; } - -/****************************************************************************** - * PCI block - *****************************************************************************/ -/** - * ci13xxx_pci_irq: interrut handler - * @irq: irq number - * @pdev: USB Device Controller interrupt source - * - * This function returns IRQ_HANDLED if the IRQ has been handled - * This is an ISR don't trace, use attribute interface instead - */ -static irqreturn_t ci13xxx_pci_irq(int irq, void *pdev) -{ - if (irq == 0) { - dev_err(&((struct pci_dev *)pdev)->dev, "Invalid IRQ0 usage!"); - return IRQ_HANDLED; - } - return udc_irq(); -} - -/** - * ci13xxx_pci_probe: PCI probe - * @pdev: USB device controller being probed - * @id: PCI hotplug ID connecting controller to UDC framework - * - * This function returns an error code - * Allocates basic PCI resources for this USB device controller, and then - * invokes the udc_probe() method to start the UDC associated with it - */ -static int __devinit ci13xxx_pci_probe(struct pci_dev *pdev, - const struct pci_device_id *id) -{ - void __iomem *regs = NULL; - int retval = 0; - - if (id == NULL) - return -EINVAL; - - retval = pci_enable_device(pdev); - if (retval) - goto done; - - if (!pdev->irq) { - dev_err(&pdev->dev, "No IRQ, check BIOS/PCI setup!"); - retval = -ENODEV; - goto disable_device; - } - - retval = pci_request_regions(pdev, UDC_DRIVER_NAME); - if (retval) - goto disable_device; - - /* BAR 0 holds all the registers */ - regs = pci_iomap(pdev, 0, 0); - if (!regs) { - dev_err(&pdev->dev, "Error mapping memory!"); - retval = -EFAULT; - goto release_regions; - } - pci_set_drvdata(pdev, (__force void *)regs); - - pci_set_master(pdev); - pci_try_set_mwi(pdev); - - retval = udc_probe(&pdev->dev, regs, UDC_DRIVER_NAME); - if (retval) - goto iounmap; - - /* our device does not have MSI capability */ - - retval = request_irq(pdev->irq, ci13xxx_pci_irq, IRQF_SHARED, - UDC_DRIVER_NAME, pdev); - if (retval) - goto gadget_remove; - - return 0; - - gadget_remove: - udc_remove(); - iounmap: - pci_iounmap(pdev, regs); - release_regions: - pci_release_regions(pdev); - disable_device: - pci_disable_device(pdev); - done: - return retval; -} - -/** - * ci13xxx_pci_remove: PCI remove - * @pdev: USB Device Controller being removed - * - * Reverses the effect of ci13xxx_pci_probe(), - * first invoking the udc_remove() and then releases - * all PCI resources allocated for this USB device controller - */ -static void __devexit ci13xxx_pci_remove(struct pci_dev *pdev) -{ - free_irq(pdev->irq, pdev); - udc_remove(); - pci_iounmap(pdev, (__force void __iomem *)pci_get_drvdata(pdev)); - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -/** - * PCI device table - * PCI device structure - * - * Check "pci.h" for details - */ -static DEFINE_PCI_DEVICE_TABLE(ci13xxx_pci_id_table) = { - { PCI_DEVICE(0x153F, 0x1004) }, - { PCI_DEVICE(0x153F, 0x1006) }, - { 0, 0, 0, 0, 0, 0, 0 /* end: all zeroes */ } -}; -MODULE_DEVICE_TABLE(pci, ci13xxx_pci_id_table); - -static struct pci_driver ci13xxx_pci_driver = { - .name = UDC_DRIVER_NAME, - .id_table = ci13xxx_pci_id_table, - .probe = ci13xxx_pci_probe, - .remove = __devexit_p(ci13xxx_pci_remove), -}; - -/** - * ci13xxx_pci_init: module init - * - * Driver load - */ -static int __init ci13xxx_pci_init(void) -{ - return pci_register_driver(&ci13xxx_pci_driver); -} -module_init(ci13xxx_pci_init); - -/** - * ci13xxx_pci_exit: module exit - * - * Driver unload - */ -static void __exit ci13xxx_pci_exit(void) -{ - pci_unregister_driver(&ci13xxx_pci_driver); -} -module_exit(ci13xxx_pci_exit); - -MODULE_AUTHOR("MIPS - David Lopo <dlopo@chipidea.mips.com>"); -MODULE_DESCRIPTION("MIPS CI13XXX USB Peripheral Controller"); -MODULE_LICENSE("GPL"); -MODULE_VERSION("June 2008"); diff --git a/drivers/usb/gadget/ci13xxx_udc.h b/drivers/usb/gadget/ci13xxx_udc.h index 4026e9cede34..4fd19313e238 100644 --- a/drivers/usb/gadget/ci13xxx_udc.h +++ b/drivers/usb/gadget/ci13xxx_udc.h @@ -97,9 +97,24 @@ struct ci13xxx_ep { struct dma_pool *td_pool; }; +struct ci13xxx; +struct ci13xxx_udc_driver { + const char *name; + unsigned long flags; +#define CI13XXX_REGS_SHARED BIT(0) +#define CI13XXX_REQUIRE_TRANSCEIVER BIT(1) +#define CI13XXX_PULLUP_ON_VBUS BIT(2) +#define CI13XXX_DISABLE_STREAMING BIT(3) + +#define CI13XXX_CONTROLLER_RESET_EVENT 0 +#define CI13XXX_CONTROLLER_STOPPED_EVENT 1 + void (*notify_event) (struct ci13xxx *udc, unsigned event); +}; + /* CI13XXX UDC descriptor & global resources */ struct ci13xxx { spinlock_t *lock; /* ctrl register bank access */ + void __iomem *regs; /* registers address space */ struct dma_pool *qh_pool; /* DMA pool for queue heads */ struct dma_pool *td_pool; /* DMA pool for transfer descs */ @@ -108,6 +123,9 @@ struct ci13xxx { struct ci13xxx_ep ci13xxx_ep[ENDPT_MAX]; /* extended endpts */ struct usb_gadget_driver *driver; /* 3rd party gadget driver */ + struct ci13xxx_udc_driver *udc_driver; /* device controller driver */ + int vbus_active; /* is VBUS active */ + struct otg_transceiver *transceiver; /* Transceiver struct */ }; /****************************************************************************** @@ -157,6 +175,7 @@ struct ci13xxx { #define USBMODE_CM_DEVICE (0x02UL << 0) #define USBMODE_CM_HOST (0x03UL << 0) #define USBMODE_SLOM BIT(3) +#define USBMODE_SDIS BIT(4) /* ENDPTCTRL */ #define ENDPTCTRL_RXS BIT(0) diff --git a/drivers/usb/gadget/f_fs.c b/drivers/usb/gadget/f_fs.c index 255969cd1639..1b7ae7c9d683 100644 --- a/drivers/usb/gadget/f_fs.c +++ b/drivers/usb/gadget/f_fs.c @@ -427,7 +427,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, } data = ffs_prepare_buffer(buf, len); - if (unlikely(IS_ERR(data))) { + if (IS_ERR(data)) { ret = PTR_ERR(data); break; } @@ -500,7 +500,7 @@ static ssize_t ffs_ep0_write(struct file *file, const char __user *buf, spin_unlock_irq(&ffs->ev.waitq.lock); data = ffs_prepare_buffer(buf, len); - if (unlikely(IS_ERR(data))) { + if (IS_ERR(data)) { ret = PTR_ERR(data); break; } diff --git a/drivers/usb/gadget/f_ncm.c b/drivers/usb/gadget/f_ncm.c new file mode 100644 index 000000000000..130eee678c8b --- /dev/null +++ b/drivers/usb/gadget/f_ncm.c @@ -0,0 +1,1407 @@ +/* + * f_ncm.c -- USB CDC Network (NCM) link function driver + * + * Copyright (C) 2010 Nokia Corporation + * Contact: Yauheni Kaliuta <yauheni.kaliuta@nokia.com> + * + * The driver borrows from f_ecm.c which is: + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2008 Nokia Corporation + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/etherdevice.h> +#include <linux/crc32.h> + +#include <linux/usb/cdc.h> + +#include "u_ether.h" + +/* + * This function is a "CDC Network Control Model" (CDC NCM) Ethernet link. + * NCM is intended to be used with high-speed network attachments. + * + * Note that NCM requires the use of "alternate settings" for its data + * interface. This means that the set_alt() method has real work to do, + * and also means that a get_alt() method is required. + */ + +/* to trigger crc/non-crc ndp signature */ + +#define NCM_NDP_HDR_CRC_MASK 0x01000000 +#define NCM_NDP_HDR_CRC 0x01000000 +#define NCM_NDP_HDR_NOCRC 0x00000000 + +struct ncm_ep_descs { + struct usb_endpoint_descriptor *in; + struct usb_endpoint_descriptor *out; + struct usb_endpoint_descriptor *notify; +}; + +enum ncm_notify_state { + NCM_NOTIFY_NONE, /* don't notify */ + NCM_NOTIFY_CONNECT, /* issue CONNECT next */ + NCM_NOTIFY_SPEED, /* issue SPEED_CHANGE next */ +}; + +struct f_ncm { + struct gether port; + u8 ctrl_id, data_id; + + char ethaddr[14]; + + struct ncm_ep_descs fs; + struct ncm_ep_descs hs; + + struct usb_ep *notify; + struct usb_endpoint_descriptor *notify_desc; + struct usb_request *notify_req; + u8 notify_state; + bool is_open; + + struct ndp_parser_opts *parser_opts; + bool is_crc; + + /* + * for notification, it is accessed from both + * callback and ethernet open/close + */ + spinlock_t lock; +}; + +static inline struct f_ncm *func_to_ncm(struct usb_function *f) +{ + return container_of(f, struct f_ncm, port.func); +} + +/* peak (theoretical) bulk transfer rate in bits-per-second */ +static inline unsigned ncm_bitrate(struct usb_gadget *g) +{ + if (gadget_is_dualspeed(g) && g->speed == USB_SPEED_HIGH) + return 13 * 512 * 8 * 1000 * 8; + else + return 19 * 64 * 1 * 1000 * 8; +} + +/*-------------------------------------------------------------------------*/ + +/* + * We cannot group frames so use just the minimal size which ok to put + * one max-size ethernet frame. + * If the host can group frames, allow it to do that, 16K is selected, + * because it's used by default by the current linux host driver + */ +#define NTB_DEFAULT_IN_SIZE USB_CDC_NCM_NTB_MIN_IN_SIZE +#define NTB_OUT_SIZE 16384 + +/* + * skbs of size less than that will not be alligned + * to NCM's dwNtbInMaxSize to save bus bandwidth + */ + +#define MAX_TX_NONFIXED (512 * 3) + +#define FORMATS_SUPPORTED (USB_CDC_NCM_NTB16_SUPPORTED | \ + USB_CDC_NCM_NTB32_SUPPORTED) + +static struct usb_cdc_ncm_ntb_parameters ntb_parameters = { + .wLength = sizeof ntb_parameters, + .bmNtbFormatsSupported = cpu_to_le16(FORMATS_SUPPORTED), + .dwNtbInMaxSize = cpu_to_le32(NTB_DEFAULT_IN_SIZE), + .wNdpInDivisor = cpu_to_le16(4), + .wNdpInPayloadRemainder = cpu_to_le16(0), + .wNdpInAlignment = cpu_to_le16(4), + + .dwNtbOutMaxSize = cpu_to_le32(NTB_OUT_SIZE), + .wNdpOutDivisor = cpu_to_le16(4), + .wNdpOutPayloadRemainder = cpu_to_le16(0), + .wNdpOutAlignment = cpu_to_le16(4), +}; + +/* + * Use wMaxPacketSize big enough to fit CDC_NOTIFY_SPEED_CHANGE in one + * packet, to simplify cancellation; and a big transfer interval, to + * waste less bandwidth. + */ + +#define LOG2_STATUS_INTERVAL_MSEC 5 /* 1 << 5 == 32 msec */ +#define NCM_STATUS_BYTECOUNT 16 /* 8 byte header + data */ + +static struct usb_interface_assoc_descriptor ncm_iad_desc __initdata = { + .bLength = sizeof ncm_iad_desc, + .bDescriptorType = USB_DT_INTERFACE_ASSOCIATION, + + /* .bFirstInterface = DYNAMIC, */ + .bInterfaceCount = 2, /* control + data */ + .bFunctionClass = USB_CLASS_COMM, + .bFunctionSubClass = USB_CDC_SUBCLASS_NCM, + .bFunctionProtocol = USB_CDC_PROTO_NONE, + /* .iFunction = DYNAMIC */ +}; + +/* interface descriptor: */ + +static struct usb_interface_descriptor ncm_control_intf __initdata = { + .bLength = sizeof ncm_control_intf, + .bDescriptorType = USB_DT_INTERFACE, + + /* .bInterfaceNumber = DYNAMIC */ + .bNumEndpoints = 1, + .bInterfaceClass = USB_CLASS_COMM, + .bInterfaceSubClass = USB_CDC_SUBCLASS_NCM, + .bInterfaceProtocol = USB_CDC_PROTO_NONE, + /* .iInterface = DYNAMIC */ +}; + +static struct usb_cdc_header_desc ncm_header_desc __initdata = { + .bLength = sizeof ncm_header_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_HEADER_TYPE, + + .bcdCDC = cpu_to_le16(0x0110), +}; + +static struct usb_cdc_union_desc ncm_union_desc __initdata = { + .bLength = sizeof(ncm_union_desc), + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_UNION_TYPE, + /* .bMasterInterface0 = DYNAMIC */ + /* .bSlaveInterface0 = DYNAMIC */ +}; + +static struct usb_cdc_ether_desc ecm_desc __initdata = { + .bLength = sizeof ecm_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_ETHERNET_TYPE, + + /* this descriptor actually adds value, surprise! */ + /* .iMACAddress = DYNAMIC */ + .bmEthernetStatistics = cpu_to_le32(0), /* no statistics */ + .wMaxSegmentSize = cpu_to_le16(ETH_FRAME_LEN), + .wNumberMCFilters = cpu_to_le16(0), + .bNumberPowerFilters = 0, +}; + +#define NCAPS (USB_CDC_NCM_NCAP_ETH_FILTER | USB_CDC_NCM_NCAP_CRC_MODE) + +static struct usb_cdc_ncm_desc ncm_desc __initdata = { + .bLength = sizeof ncm_desc, + .bDescriptorType = USB_DT_CS_INTERFACE, + .bDescriptorSubType = USB_CDC_NCM_TYPE, + + .bcdNcmVersion = cpu_to_le16(0x0100), + /* can process SetEthernetPacketFilter */ + .bmNetworkCapabilities = NCAPS, +}; + +/* the default data interface has no endpoints ... */ + +static struct usb_interface_descriptor ncm_data_nop_intf __initdata = { + .bLength = sizeof ncm_data_nop_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bInterfaceNumber = 1, + .bAlternateSetting = 0, + .bNumEndpoints = 0, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = USB_CDC_NCM_PROTO_NTB, + /* .iInterface = DYNAMIC */ +}; + +/* ... but the "real" data interface has two bulk endpoints */ + +static struct usb_interface_descriptor ncm_data_intf __initdata = { + .bLength = sizeof ncm_data_intf, + .bDescriptorType = USB_DT_INTERFACE, + + .bInterfaceNumber = 1, + .bAlternateSetting = 1, + .bNumEndpoints = 2, + .bInterfaceClass = USB_CLASS_CDC_DATA, + .bInterfaceSubClass = 0, + .bInterfaceProtocol = USB_CDC_NCM_PROTO_NTB, + /* .iInterface = DYNAMIC */ +}; + +/* full speed support: */ + +static struct usb_endpoint_descriptor fs_ncm_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), + .bInterval = 1 << LOG2_STATUS_INTERVAL_MSEC, +}; + +static struct usb_endpoint_descriptor fs_ncm_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_endpoint_descriptor fs_ncm_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, +}; + +static struct usb_descriptor_header *ncm_fs_function[] __initdata = { + (struct usb_descriptor_header *) &ncm_iad_desc, + /* CDC NCM control descriptors */ + (struct usb_descriptor_header *) &ncm_control_intf, + (struct usb_descriptor_header *) &ncm_header_desc, + (struct usb_descriptor_header *) &ncm_union_desc, + (struct usb_descriptor_header *) &ecm_desc, + (struct usb_descriptor_header *) &ncm_desc, + (struct usb_descriptor_header *) &fs_ncm_notify_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ncm_data_nop_intf, + (struct usb_descriptor_header *) &ncm_data_intf, + (struct usb_descriptor_header *) &fs_ncm_in_desc, + (struct usb_descriptor_header *) &fs_ncm_out_desc, + NULL, +}; + +/* high speed support: */ + +static struct usb_endpoint_descriptor hs_ncm_notify_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_INT, + .wMaxPacketSize = cpu_to_le16(NCM_STATUS_BYTECOUNT), + .bInterval = LOG2_STATUS_INTERVAL_MSEC + 4, +}; +static struct usb_endpoint_descriptor hs_ncm_in_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_IN, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_endpoint_descriptor hs_ncm_out_desc __initdata = { + .bLength = USB_DT_ENDPOINT_SIZE, + .bDescriptorType = USB_DT_ENDPOINT, + + .bEndpointAddress = USB_DIR_OUT, + .bmAttributes = USB_ENDPOINT_XFER_BULK, + .wMaxPacketSize = cpu_to_le16(512), +}; + +static struct usb_descriptor_header *ncm_hs_function[] __initdata = { + (struct usb_descriptor_header *) &ncm_iad_desc, + /* CDC NCM control descriptors */ + (struct usb_descriptor_header *) &ncm_control_intf, + (struct usb_descriptor_header *) &ncm_header_desc, + (struct usb_descriptor_header *) &ncm_union_desc, + (struct usb_descriptor_header *) &ecm_desc, + (struct usb_descriptor_header *) &ncm_desc, + (struct usb_descriptor_header *) &hs_ncm_notify_desc, + /* data interface, altsettings 0 and 1 */ + (struct usb_descriptor_header *) &ncm_data_nop_intf, + (struct usb_descriptor_header *) &ncm_data_intf, + (struct usb_descriptor_header *) &hs_ncm_in_desc, + (struct usb_descriptor_header *) &hs_ncm_out_desc, + NULL, +}; + +/* string descriptors: */ + +#define STRING_CTRL_IDX 0 +#define STRING_MAC_IDX 1 +#define STRING_DATA_IDX 2 +#define STRING_IAD_IDX 3 + +static struct usb_string ncm_string_defs[] = { + [STRING_CTRL_IDX].s = "CDC Network Control Model (NCM)", + [STRING_MAC_IDX].s = NULL /* DYNAMIC */, + [STRING_DATA_IDX].s = "CDC Network Data", + [STRING_IAD_IDX].s = "CDC NCM", + { } /* end of list */ +}; + +static struct usb_gadget_strings ncm_string_table = { + .language = 0x0409, /* en-us */ + .strings = ncm_string_defs, +}; + +static struct usb_gadget_strings *ncm_strings[] = { + &ncm_string_table, + NULL, +}; + +/* + * Here are options for NCM Datagram Pointer table (NDP) parser. + * There are 2 different formats: NDP16 and NDP32 in the spec (ch. 3), + * in NDP16 offsets and sizes fields are 1 16bit word wide, + * in NDP32 -- 2 16bit words wide. Also signatures are different. + * To make the parser code the same, put the differences in the structure, + * and switch pointers to the structures when the format is changed. + */ + +struct ndp_parser_opts { + u32 nth_sign; + u32 ndp_sign; + unsigned nth_size; + unsigned ndp_size; + unsigned ndplen_align; + /* sizes in u16 units */ + unsigned dgram_item_len; /* index or length */ + unsigned block_length; + unsigned fp_index; + unsigned reserved1; + unsigned reserved2; + unsigned next_fp_index; +}; + +#define INIT_NDP16_OPTS { \ + .nth_sign = USB_CDC_NCM_NTH16_SIGN, \ + .ndp_sign = USB_CDC_NCM_NDP16_NOCRC_SIGN, \ + .nth_size = sizeof(struct usb_cdc_ncm_nth16), \ + .ndp_size = sizeof(struct usb_cdc_ncm_ndp16), \ + .ndplen_align = 4, \ + .dgram_item_len = 1, \ + .block_length = 1, \ + .fp_index = 1, \ + .reserved1 = 0, \ + .reserved2 = 0, \ + .next_fp_index = 1, \ + } + + +#define INIT_NDP32_OPTS { \ + .nth_sign = USB_CDC_NCM_NTH32_SIGN, \ + .ndp_sign = USB_CDC_NCM_NDP32_NOCRC_SIGN, \ + .nth_size = sizeof(struct usb_cdc_ncm_nth32), \ + .ndp_size = sizeof(struct usb_cdc_ncm_ndp32), \ + .ndplen_align = 8, \ + .dgram_item_len = 2, \ + .block_length = 2, \ + .fp_index = 2, \ + .reserved1 = 1, \ + .reserved2 = 2, \ + .next_fp_index = 2, \ + } + +static struct ndp_parser_opts ndp16_opts = INIT_NDP16_OPTS; +static struct ndp_parser_opts ndp32_opts = INIT_NDP32_OPTS; + +static inline void put_ncm(__le16 **p, unsigned size, unsigned val) +{ + switch (size) { + case 1: + put_unaligned_le16((u16)val, *p); + break; + case 2: + put_unaligned_le32((u32)val, *p); + + break; + default: + BUG(); + } + + *p += size; +} + +static inline unsigned get_ncm(__le16 **p, unsigned size) +{ + unsigned tmp; + + switch (size) { + case 1: + tmp = get_unaligned_le16(*p); + break; + case 2: + tmp = get_unaligned_le32(*p); + break; + default: + BUG(); + } + + *p += size; + return tmp; +} + +/*-------------------------------------------------------------------------*/ + +static inline void ncm_reset_values(struct f_ncm *ncm) +{ + ncm->parser_opts = &ndp16_opts; + ncm->is_crc = false; + ncm->port.cdc_filter = DEFAULT_FILTER; + + /* doesn't make sense for ncm, fixed size used */ + ncm->port.header_len = 0; + + ncm->port.fixed_out_len = le32_to_cpu(ntb_parameters.dwNtbOutMaxSize); + ncm->port.fixed_in_len = NTB_DEFAULT_IN_SIZE; +} + +/* + * Context: ncm->lock held + */ +static void ncm_do_notify(struct f_ncm *ncm) +{ + struct usb_request *req = ncm->notify_req; + struct usb_cdc_notification *event; + struct usb_composite_dev *cdev = ncm->port.func.config->cdev; + __le32 *data; + int status; + + /* notification already in flight? */ + if (!req) + return; + + event = req->buf; + switch (ncm->notify_state) { + case NCM_NOTIFY_NONE: + return; + + case NCM_NOTIFY_CONNECT: + event->bNotificationType = USB_CDC_NOTIFY_NETWORK_CONNECTION; + if (ncm->is_open) + event->wValue = cpu_to_le16(1); + else + event->wValue = cpu_to_le16(0); + event->wLength = 0; + req->length = sizeof *event; + + DBG(cdev, "notify connect %s\n", + ncm->is_open ? "true" : "false"); + ncm->notify_state = NCM_NOTIFY_NONE; + break; + + case NCM_NOTIFY_SPEED: + event->bNotificationType = USB_CDC_NOTIFY_SPEED_CHANGE; + event->wValue = cpu_to_le16(0); + event->wLength = cpu_to_le16(8); + req->length = NCM_STATUS_BYTECOUNT; + + /* SPEED_CHANGE data is up/down speeds in bits/sec */ + data = req->buf + sizeof *event; + data[0] = cpu_to_le32(ncm_bitrate(cdev->gadget)); + data[1] = data[0]; + + DBG(cdev, "notify speed %d\n", ncm_bitrate(cdev->gadget)); + ncm->notify_state = NCM_NOTIFY_CONNECT; + break; + } + event->bmRequestType = 0xA1; + event->wIndex = cpu_to_le16(ncm->ctrl_id); + + ncm->notify_req = NULL; + /* + * In double buffering if there is a space in FIFO, + * completion callback can be called right after the call, + * so unlocking + */ + spin_unlock(&ncm->lock); + status = usb_ep_queue(ncm->notify, req, GFP_ATOMIC); + spin_lock(&ncm->lock); + if (status < 0) { + ncm->notify_req = req; + DBG(cdev, "notify --> %d\n", status); + } +} + +/* + * Context: ncm->lock held + */ +static void ncm_notify(struct f_ncm *ncm) +{ + /* + * NOTE on most versions of Linux, host side cdc-ethernet + * won't listen for notifications until its netdevice opens. + * The first notification then sits in the FIFO for a long + * time, and the second one is queued. + * + * If ncm_notify() is called before the second (CONNECT) + * notification is sent, then it will reset to send the SPEED + * notificaion again (and again, and again), but it's not a problem + */ + ncm->notify_state = NCM_NOTIFY_SPEED; + ncm_do_notify(ncm); +} + +static void ncm_notify_complete(struct usb_ep *ep, struct usb_request *req) +{ + struct f_ncm *ncm = req->context; + struct usb_composite_dev *cdev = ncm->port.func.config->cdev; + struct usb_cdc_notification *event = req->buf; + + spin_lock(&ncm->lock); + switch (req->status) { + case 0: + VDBG(cdev, "Notification %02x sent\n", + event->bNotificationType); + break; + case -ECONNRESET: + case -ESHUTDOWN: + ncm->notify_state = NCM_NOTIFY_NONE; + break; + default: + DBG(cdev, "event %02x --> %d\n", + event->bNotificationType, req->status); + break; + } + ncm->notify_req = req; + ncm_do_notify(ncm); + spin_unlock(&ncm->lock); +} + +static void ncm_ep0out_complete(struct usb_ep *ep, struct usb_request *req) +{ + /* now for SET_NTB_INPUT_SIZE only */ + unsigned in_size; + struct usb_function *f = req->context; + struct f_ncm *ncm = func_to_ncm(f); + struct usb_composite_dev *cdev = ep->driver_data; + + req->context = NULL; + if (req->status || req->actual != req->length) { + DBG(cdev, "Bad control-OUT transfer\n"); + goto invalid; + } + + in_size = get_unaligned_le32(req->buf); + if (in_size < USB_CDC_NCM_NTB_MIN_IN_SIZE || + in_size > le32_to_cpu(ntb_parameters.dwNtbInMaxSize)) { + DBG(cdev, "Got wrong INPUT SIZE (%d) from host\n", in_size); + goto invalid; + } + + ncm->port.fixed_in_len = in_size; + VDBG(cdev, "Set NTB INPUT SIZE %d\n", in_size); + return; + +invalid: + usb_ep_set_halt(ep); + return; +} + +static int ncm_setup(struct usb_function *f, const struct usb_ctrlrequest *ctrl) +{ + struct f_ncm *ncm = func_to_ncm(f); + struct usb_composite_dev *cdev = f->config->cdev; + struct usb_request *req = cdev->req; + int value = -EOPNOTSUPP; + u16 w_index = le16_to_cpu(ctrl->wIndex); + u16 w_value = le16_to_cpu(ctrl->wValue); + u16 w_length = le16_to_cpu(ctrl->wLength); + + /* + * composite driver infrastructure handles everything except + * CDC class messages; interface activation uses set_alt(). + */ + switch ((ctrl->bRequestType << 8) | ctrl->bRequest) { + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SET_ETHERNET_PACKET_FILTER: + /* + * see 6.2.30: no data, wIndex = interface, + * wValue = packet filter bitmap + */ + if (w_length != 0 || w_index != ncm->ctrl_id) + goto invalid; + DBG(cdev, "packet filter %02x\n", w_value); + /* + * REVISIT locking of cdc_filter. This assumes the UDC + * driver won't have a concurrent packet TX irq running on + * another CPU; or that if it does, this write is atomic... + */ + ncm->port.cdc_filter = w_value; + value = 0; + break; + /* + * and optionally: + * case USB_CDC_SEND_ENCAPSULATED_COMMAND: + * case USB_CDC_GET_ENCAPSULATED_RESPONSE: + * case USB_CDC_SET_ETHERNET_MULTICAST_FILTERS: + * case USB_CDC_SET_ETHERNET_PM_PATTERN_FILTER: + * case USB_CDC_GET_ETHERNET_PM_PATTERN_FILTER: + * case USB_CDC_GET_ETHERNET_STATISTIC: + */ + + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_GET_NTB_PARAMETERS: + + if (w_length == 0 || w_value != 0 || w_index != ncm->ctrl_id) + goto invalid; + value = w_length > sizeof ntb_parameters ? + sizeof ntb_parameters : w_length; + memcpy(req->buf, &ntb_parameters, value); + VDBG(cdev, "Host asked NTB parameters\n"); + break; + + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_GET_NTB_INPUT_SIZE: + + if (w_length < 4 || w_value != 0 || w_index != ncm->ctrl_id) + goto invalid; + put_unaligned_le32(ncm->port.fixed_in_len, req->buf); + value = 4; + VDBG(cdev, "Host asked INPUT SIZE, sending %d\n", + ncm->port.fixed_in_len); + break; + + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SET_NTB_INPUT_SIZE: + { + if (w_length != 4 || w_value != 0 || w_index != ncm->ctrl_id) + goto invalid; + req->complete = ncm_ep0out_complete; + req->length = w_length; + req->context = f; + + value = req->length; + break; + } + + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_GET_NTB_FORMAT: + { + uint16_t format; + + if (w_length < 2 || w_value != 0 || w_index != ncm->ctrl_id) + goto invalid; + format = (ncm->parser_opts == &ndp16_opts) ? 0x0000 : 0x0001; + put_unaligned_le16(format, req->buf); + value = 2; + VDBG(cdev, "Host asked NTB FORMAT, sending %d\n", format); + break; + } + + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SET_NTB_FORMAT: + { + if (w_length != 0 || w_index != ncm->ctrl_id) + goto invalid; + switch (w_value) { + case 0x0000: + ncm->parser_opts = &ndp16_opts; + DBG(cdev, "NCM16 selected\n"); + break; + case 0x0001: + ncm->parser_opts = &ndp32_opts; + DBG(cdev, "NCM32 selected\n"); + break; + default: + goto invalid; + } + value = 0; + break; + } + case ((USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_GET_CRC_MODE: + { + uint16_t is_crc; + + if (w_length < 2 || w_value != 0 || w_index != ncm->ctrl_id) + goto invalid; + is_crc = ncm->is_crc ? 0x0001 : 0x0000; + put_unaligned_le16(is_crc, req->buf); + value = 2; + VDBG(cdev, "Host asked CRC MODE, sending %d\n", is_crc); + break; + } + + case ((USB_DIR_OUT | USB_TYPE_CLASS | USB_RECIP_INTERFACE) << 8) + | USB_CDC_SET_CRC_MODE: + { + int ndp_hdr_crc = 0; + + if (w_length != 0 || w_index != ncm->ctrl_id) + goto invalid; + switch (w_value) { + case 0x0000: + ncm->is_crc = false; + ndp_hdr_crc = NCM_NDP_HDR_NOCRC; + DBG(cdev, "non-CRC mode selected\n"); + break; + case 0x0001: + ncm->is_crc = true; + ndp_hdr_crc = NCM_NDP_HDR_CRC; + DBG(cdev, "CRC mode selected\n"); + break; + default: + goto invalid; + } + ncm->parser_opts->ndp_sign &= ~NCM_NDP_HDR_CRC_MASK; + ncm->parser_opts->ndp_sign |= ndp_hdr_crc; + value = 0; + break; + } + + /* and disabled in ncm descriptor: */ + /* case USB_CDC_GET_NET_ADDRESS: */ + /* case USB_CDC_SET_NET_ADDRESS: */ + /* case USB_CDC_GET_MAX_DATAGRAM_SIZE: */ + /* case USB_CDC_SET_MAX_DATAGRAM_SIZE: */ + + default: +invalid: + DBG(cdev, "invalid control req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + } + + /* respond with data transfer or status phase? */ + if (value >= 0) { + DBG(cdev, "ncm req%02x.%02x v%04x i%04x l%d\n", + ctrl->bRequestType, ctrl->bRequest, + w_value, w_index, w_length); + req->zero = 0; + req->length = value; + value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC); + if (value < 0) + ERROR(cdev, "ncm req %02x.%02x response err %d\n", + ctrl->bRequestType, ctrl->bRequest, + value); + } + + /* device either stalls (value < 0) or reports success */ + return value; +} + + +static int ncm_set_alt(struct usb_function *f, unsigned intf, unsigned alt) +{ + struct f_ncm *ncm = func_to_ncm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + /* Control interface has only altsetting 0 */ + if (intf == ncm->ctrl_id) { + if (alt != 0) + goto fail; + + if (ncm->notify->driver_data) { + DBG(cdev, "reset ncm control %d\n", intf); + usb_ep_disable(ncm->notify); + } else { + DBG(cdev, "init ncm ctrl %d\n", intf); + ncm->notify_desc = ep_choose(cdev->gadget, + ncm->hs.notify, + ncm->fs.notify); + } + usb_ep_enable(ncm->notify, ncm->notify_desc); + ncm->notify->driver_data = ncm; + + /* Data interface has two altsettings, 0 and 1 */ + } else if (intf == ncm->data_id) { + if (alt > 1) + goto fail; + + if (ncm->port.in_ep->driver_data) { + DBG(cdev, "reset ncm\n"); + gether_disconnect(&ncm->port); + ncm_reset_values(ncm); + } + + /* + * CDC Network only sends data in non-default altsettings. + * Changing altsettings resets filters, statistics, etc. + */ + if (alt == 1) { + struct net_device *net; + + if (!ncm->port.in) { + DBG(cdev, "init ncm\n"); + ncm->port.in = ep_choose(cdev->gadget, + ncm->hs.in, + ncm->fs.in); + ncm->port.out = ep_choose(cdev->gadget, + ncm->hs.out, + ncm->fs.out); + } + + /* TODO */ + /* Enable zlps by default for NCM conformance; + * override for musb_hdrc (avoids txdma ovhead) + */ + ncm->port.is_zlp_ok = !( + gadget_is_musbhdrc(cdev->gadget) + ); + ncm->port.cdc_filter = DEFAULT_FILTER; + DBG(cdev, "activate ncm\n"); + net = gether_connect(&ncm->port); + if (IS_ERR(net)) + return PTR_ERR(net); + } + + spin_lock(&ncm->lock); + ncm_notify(ncm); + spin_unlock(&ncm->lock); + } else + goto fail; + + return 0; +fail: + return -EINVAL; +} + +/* + * Because the data interface supports multiple altsettings, + * this NCM function *MUST* implement a get_alt() method. + */ +static int ncm_get_alt(struct usb_function *f, unsigned intf) +{ + struct f_ncm *ncm = func_to_ncm(f); + + if (intf == ncm->ctrl_id) + return 0; + return ncm->port.in_ep->driver_data ? 1 : 0; +} + +static struct sk_buff *ncm_wrap_ntb(struct gether *port, + struct sk_buff *skb) +{ + struct f_ncm *ncm = func_to_ncm(&port->func); + struct sk_buff *skb2; + int ncb_len = 0; + __le16 *tmp; + int div = ntb_parameters.wNdpInDivisor; + int rem = ntb_parameters.wNdpInPayloadRemainder; + int pad; + int ndp_align = ntb_parameters.wNdpInAlignment; + int ndp_pad; + unsigned max_size = ncm->port.fixed_in_len; + struct ndp_parser_opts *opts = ncm->parser_opts; + unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; + + ncb_len += opts->nth_size; + ndp_pad = ALIGN(ncb_len, ndp_align) - ncb_len; + ncb_len += ndp_pad; + ncb_len += opts->ndp_size; + ncb_len += 2 * 2 * opts->dgram_item_len; /* Datagram entry */ + ncb_len += 2 * 2 * opts->dgram_item_len; /* Zero datagram entry */ + pad = ALIGN(ncb_len, div) + rem - ncb_len; + ncb_len += pad; + + if (ncb_len + skb->len + crc_len > max_size) { + dev_kfree_skb_any(skb); + return NULL; + } + + skb2 = skb_copy_expand(skb, ncb_len, + max_size - skb->len - ncb_len - crc_len, + GFP_ATOMIC); + dev_kfree_skb_any(skb); + if (!skb2) + return NULL; + + skb = skb2; + + tmp = (void *) skb_push(skb, ncb_len); + memset(tmp, 0, ncb_len); + + put_unaligned_le32(opts->nth_sign, tmp); /* dwSignature */ + tmp += 2; + /* wHeaderLength */ + put_unaligned_le16(opts->nth_size, tmp++); + tmp++; /* skip wSequence */ + put_ncm(&tmp, opts->block_length, skb->len); /* (d)wBlockLength */ + /* (d)wFpIndex */ + /* the first pointer is right after the NTH + align */ + put_ncm(&tmp, opts->fp_index, opts->nth_size + ndp_pad); + + tmp = (void *)tmp + ndp_pad; + + /* NDP */ + put_unaligned_le32(opts->ndp_sign, tmp); /* dwSignature */ + tmp += 2; + /* wLength */ + put_unaligned_le16(ncb_len - opts->nth_size - pad, tmp++); + + tmp += opts->reserved1; + tmp += opts->next_fp_index; /* skip reserved (d)wNextFpIndex */ + tmp += opts->reserved2; + + if (ncm->is_crc) { + uint32_t crc; + + crc = ~crc32_le(~0, + skb->data + ncb_len, + skb->len - ncb_len); + put_unaligned_le32(crc, skb->data + skb->len); + skb_put(skb, crc_len); + } + + /* (d)wDatagramIndex[0] */ + put_ncm(&tmp, opts->dgram_item_len, ncb_len); + /* (d)wDatagramLength[0] */ + put_ncm(&tmp, opts->dgram_item_len, skb->len - ncb_len); + /* (d)wDatagramIndex[1] and (d)wDatagramLength[1] already zeroed */ + + if (skb->len > MAX_TX_NONFIXED) + memset(skb_put(skb, max_size - skb->len), + 0, max_size - skb->len); + + return skb; +} + +static int ncm_unwrap_ntb(struct gether *port, + struct sk_buff *skb, + struct sk_buff_head *list) +{ + struct f_ncm *ncm = func_to_ncm(&port->func); + __le16 *tmp = (void *) skb->data; + unsigned index, index2; + unsigned dg_len, dg_len2; + unsigned ndp_len; + struct sk_buff *skb2; + int ret = -EINVAL; + unsigned max_size = le32_to_cpu(ntb_parameters.dwNtbOutMaxSize); + struct ndp_parser_opts *opts = ncm->parser_opts; + unsigned crc_len = ncm->is_crc ? sizeof(uint32_t) : 0; + int dgram_counter; + + /* dwSignature */ + if (get_unaligned_le32(tmp) != opts->nth_sign) { + INFO(port->func.config->cdev, "Wrong NTH SIGN, skblen %d\n", + skb->len); + print_hex_dump(KERN_INFO, "HEAD:", DUMP_PREFIX_ADDRESS, 32, 1, + skb->data, 32, false); + + goto err; + } + tmp += 2; + /* wHeaderLength */ + if (get_unaligned_le16(tmp++) != opts->nth_size) { + INFO(port->func.config->cdev, "Wrong NTB headersize\n"); + goto err; + } + tmp++; /* skip wSequence */ + + /* (d)wBlockLength */ + if (get_ncm(&tmp, opts->block_length) > max_size) { + INFO(port->func.config->cdev, "OUT size exceeded\n"); + goto err; + } + + index = get_ncm(&tmp, opts->fp_index); + /* NCM 3.2 */ + if (((index % 4) != 0) && (index < opts->nth_size)) { + INFO(port->func.config->cdev, "Bad index: %x\n", + index); + goto err; + } + + /* walk through NDP */ + tmp = ((void *)skb->data) + index; + if (get_unaligned_le32(tmp) != opts->ndp_sign) { + INFO(port->func.config->cdev, "Wrong NDP SIGN\n"); + goto err; + } + tmp += 2; + + ndp_len = get_unaligned_le16(tmp++); + /* + * NCM 3.3.1 + * entry is 2 items + * item size is 16/32 bits, opts->dgram_item_len * 2 bytes + * minimal: struct usb_cdc_ncm_ndpX + normal entry + zero entry + */ + if ((ndp_len < opts->ndp_size + 2 * 2 * (opts->dgram_item_len * 2)) + || (ndp_len % opts->ndplen_align != 0)) { + INFO(port->func.config->cdev, "Bad NDP length: %x\n", ndp_len); + goto err; + } + tmp += opts->reserved1; + tmp += opts->next_fp_index; /* skip reserved (d)wNextFpIndex */ + tmp += opts->reserved2; + + ndp_len -= opts->ndp_size; + index2 = get_ncm(&tmp, opts->dgram_item_len); + dg_len2 = get_ncm(&tmp, opts->dgram_item_len); + dgram_counter = 0; + + do { + index = index2; + dg_len = dg_len2; + if (dg_len < 14 + crc_len) { /* ethernet header + crc */ + INFO(port->func.config->cdev, "Bad dgram length: %x\n", + dg_len); + goto err; + } + if (ncm->is_crc) { + uint32_t crc, crc2; + + crc = get_unaligned_le32(skb->data + + index + dg_len - crc_len); + crc2 = ~crc32_le(~0, + skb->data + index, + dg_len - crc_len); + if (crc != crc2) { + INFO(port->func.config->cdev, "Bad CRC\n"); + goto err; + } + } + + index2 = get_ncm(&tmp, opts->dgram_item_len); + dg_len2 = get_ncm(&tmp, opts->dgram_item_len); + + if (index2 == 0 || dg_len2 == 0) { + skb2 = skb; + } else { + skb2 = skb_clone(skb, GFP_ATOMIC); + if (skb2 == NULL) + goto err; + } + + if (!skb_pull(skb2, index)) { + ret = -EOVERFLOW; + goto err; + } + + skb_trim(skb2, dg_len - crc_len); + skb_queue_tail(list, skb2); + + ndp_len -= 2 * (opts->dgram_item_len * 2); + + dgram_counter++; + + if (index2 == 0 || dg_len2 == 0) + break; + } while (ndp_len > 2 * (opts->dgram_item_len * 2)); /* zero entry */ + + VDBG(port->func.config->cdev, + "Parsed NTB with %d frames\n", dgram_counter); + return 0; +err: + skb_queue_purge(list); + dev_kfree_skb_any(skb); + return ret; +} + +static void ncm_disable(struct usb_function *f) +{ + struct f_ncm *ncm = func_to_ncm(f); + struct usb_composite_dev *cdev = f->config->cdev; + + DBG(cdev, "ncm deactivated\n"); + + if (ncm->port.in_ep->driver_data) + gether_disconnect(&ncm->port); + + if (ncm->notify->driver_data) { + usb_ep_disable(ncm->notify); + ncm->notify->driver_data = NULL; + ncm->notify_desc = NULL; + } +} + +/*-------------------------------------------------------------------------*/ + +/* + * Callbacks let us notify the host about connect/disconnect when the + * net device is opened or closed. + * + * For testing, note that link states on this side include both opened + * and closed variants of: + * + * - disconnected/unconfigured + * - configured but inactive (data alt 0) + * - configured and active (data alt 1) + * + * Each needs to be tested with unplug, rmmod, SET_CONFIGURATION, and + * SET_INTERFACE (altsetting). Remember also that "configured" doesn't + * imply the host is actually polling the notification endpoint, and + * likewise that "active" doesn't imply it's actually using the data + * endpoints for traffic. + */ + +static void ncm_open(struct gether *geth) +{ + struct f_ncm *ncm = func_to_ncm(&geth->func); + + DBG(ncm->port.func.config->cdev, "%s\n", __func__); + + spin_lock(&ncm->lock); + ncm->is_open = true; + ncm_notify(ncm); + spin_unlock(&ncm->lock); +} + +static void ncm_close(struct gether *geth) +{ + struct f_ncm *ncm = func_to_ncm(&geth->func); + + DBG(ncm->port.func.config->cdev, "%s\n", __func__); + + spin_lock(&ncm->lock); + ncm->is_open = false; + ncm_notify(ncm); + spin_unlock(&ncm->lock); +} + +/*-------------------------------------------------------------------------*/ + +/* ethernet function driver setup/binding */ + +static int __init +ncm_bind(struct usb_configuration *c, struct usb_function *f) +{ + struct usb_composite_dev *cdev = c->cdev; + struct f_ncm *ncm = func_to_ncm(f); + int status; + struct usb_ep *ep; + + /* allocate instance-specific interface IDs */ + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ncm->ctrl_id = status; + ncm_iad_desc.bFirstInterface = status; + + ncm_control_intf.bInterfaceNumber = status; + ncm_union_desc.bMasterInterface0 = status; + + status = usb_interface_id(c, f); + if (status < 0) + goto fail; + ncm->data_id = status; + + ncm_data_nop_intf.bInterfaceNumber = status; + ncm_data_intf.bInterfaceNumber = status; + ncm_union_desc.bSlaveInterface0 = status; + + status = -ENODEV; + + /* allocate instance-specific endpoints */ + ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_in_desc); + if (!ep) + goto fail; + ncm->port.in_ep = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_out_desc); + if (!ep) + goto fail; + ncm->port.out_ep = ep; + ep->driver_data = cdev; /* claim */ + + ep = usb_ep_autoconfig(cdev->gadget, &fs_ncm_notify_desc); + if (!ep) + goto fail; + ncm->notify = ep; + ep->driver_data = cdev; /* claim */ + + status = -ENOMEM; + + /* allocate notification request and buffer */ + ncm->notify_req = usb_ep_alloc_request(ep, GFP_KERNEL); + if (!ncm->notify_req) + goto fail; + ncm->notify_req->buf = kmalloc(NCM_STATUS_BYTECOUNT, GFP_KERNEL); + if (!ncm->notify_req->buf) + goto fail; + ncm->notify_req->context = ncm; + ncm->notify_req->complete = ncm_notify_complete; + + /* copy descriptors, and track endpoint copies */ + f->descriptors = usb_copy_descriptors(ncm_fs_function); + if (!f->descriptors) + goto fail; + + ncm->fs.in = usb_find_endpoint(ncm_fs_function, + f->descriptors, &fs_ncm_in_desc); + ncm->fs.out = usb_find_endpoint(ncm_fs_function, + f->descriptors, &fs_ncm_out_desc); + ncm->fs.notify = usb_find_endpoint(ncm_fs_function, + f->descriptors, &fs_ncm_notify_desc); + + /* + * support all relevant hardware speeds... we expect that when + * hardware is dual speed, all bulk-capable endpoints work at + * both speeds + */ + if (gadget_is_dualspeed(c->cdev->gadget)) { + hs_ncm_in_desc.bEndpointAddress = + fs_ncm_in_desc.bEndpointAddress; + hs_ncm_out_desc.bEndpointAddress = + fs_ncm_out_desc.bEndpointAddress; + hs_ncm_notify_desc.bEndpointAddress = + fs_ncm_notify_desc.bEndpointAddress; + + /* copy descriptors, and track endpoint copies */ + f->hs_descriptors = usb_copy_descriptors(ncm_hs_function); + if (!f->hs_descriptors) + goto fail; + + ncm->hs.in = usb_find_endpoint(ncm_hs_function, + f->hs_descriptors, &hs_ncm_in_desc); + ncm->hs.out = usb_find_endpoint(ncm_hs_function, + f->hs_descriptors, &hs_ncm_out_desc); + ncm->hs.notify = usb_find_endpoint(ncm_hs_function, + f->hs_descriptors, &hs_ncm_notify_desc); + } + + /* + * NOTE: all that is done without knowing or caring about + * the network link ... which is unavailable to this code + * until we're activated via set_alt(). + */ + + ncm->port.open = ncm_open; + ncm->port.close = ncm_close; + + DBG(cdev, "CDC Network: %s speed IN/%s OUT/%s NOTIFY/%s\n", + gadget_is_dualspeed(c->cdev->gadget) ? "dual" : "full", + ncm->port.in_ep->name, ncm->port.out_ep->name, + ncm->notify->name); + return 0; + +fail: + if (f->descriptors) + usb_free_descriptors(f->descriptors); + + if (ncm->notify_req) { + kfree(ncm->notify_req->buf); + usb_ep_free_request(ncm->notify, ncm->notify_req); + } + + /* we might as well release our claims on endpoints */ + if (ncm->notify) + ncm->notify->driver_data = NULL; + if (ncm->port.out) + ncm->port.out_ep->driver_data = NULL; + if (ncm->port.in) + ncm->port.in_ep->driver_data = NULL; + + ERROR(cdev, "%s: can't bind, err %d\n", f->name, status); + + return status; +} + +static void +ncm_unbind(struct usb_configuration *c, struct usb_function *f) +{ + struct f_ncm *ncm = func_to_ncm(f); + + DBG(c->cdev, "ncm unbind\n"); + + if (gadget_is_dualspeed(c->cdev->gadget)) + usb_free_descriptors(f->hs_descriptors); + usb_free_descriptors(f->descriptors); + + kfree(ncm->notify_req->buf); + usb_ep_free_request(ncm->notify, ncm->notify_req); + + ncm_string_defs[1].s = NULL; + kfree(ncm); +} + +/** + * ncm_bind_config - add CDC Network link to a configuration + * @c: the configuration to support the network link + * @ethaddr: a buffer in which the ethernet address of the host side + * side of the link was recorded + * Context: single threaded during gadget setup + * + * Returns zero on success, else negative errno. + * + * Caller must have called @gether_setup(). Caller is also responsible + * for calling @gether_cleanup() before module unload. + */ +int __init ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]) +{ + struct f_ncm *ncm; + int status; + + if (!can_support_ecm(c->cdev->gadget) || !ethaddr) + return -EINVAL; + + /* maybe allocate device-global string IDs */ + if (ncm_string_defs[0].id == 0) { + + /* control interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ncm_string_defs[STRING_CTRL_IDX].id = status; + ncm_control_intf.iInterface = status; + + /* data interface label */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ncm_string_defs[STRING_DATA_IDX].id = status; + ncm_data_nop_intf.iInterface = status; + ncm_data_intf.iInterface = status; + + /* MAC address */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ncm_string_defs[STRING_MAC_IDX].id = status; + ecm_desc.iMACAddress = status; + + /* IAD */ + status = usb_string_id(c->cdev); + if (status < 0) + return status; + ncm_string_defs[STRING_IAD_IDX].id = status; + ncm_iad_desc.iFunction = status; + } + + /* allocate and initialize one new instance */ + ncm = kzalloc(sizeof *ncm, GFP_KERNEL); + if (!ncm) + return -ENOMEM; + + /* export host's Ethernet address in CDC format */ + snprintf(ncm->ethaddr, sizeof ncm->ethaddr, + "%02X%02X%02X%02X%02X%02X", + ethaddr[0], ethaddr[1], ethaddr[2], + ethaddr[3], ethaddr[4], ethaddr[5]); + ncm_string_defs[1].s = ncm->ethaddr; + + spin_lock_init(&ncm->lock); + ncm_reset_values(ncm); + ncm->port.is_fixed = true; + + ncm->port.func.name = "cdc_network"; + ncm->port.func.strings = ncm_strings; + /* descriptors are per-instance copies */ + ncm->port.func.bind = ncm_bind; + ncm->port.func.unbind = ncm_unbind; + ncm->port.func.set_alt = ncm_set_alt; + ncm->port.func.get_alt = ncm_get_alt; + ncm->port.func.setup = ncm_setup; + ncm->port.func.disable = ncm_disable; + + ncm->port.wrap = ncm_wrap_ntb; + ncm->port.unwrap = ncm_unwrap_ntb; + + status = usb_add_function(c, &ncm->port.func); + if (status) { + ncm_string_defs[1].s = NULL; + kfree(ncm); + } + return status; +} diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h index aeb109bd317d..5c2720d64ffa 100644 --- a/drivers/usb/gadget/gadget_chips.h +++ b/drivers/usb/gadget/gadget_chips.h @@ -120,10 +120,10 @@ #define gadget_is_fsl_qe(g) 0 #endif -#ifdef CONFIG_USB_GADGET_CI13XXX -#define gadget_is_ci13xxx(g) (!strcmp("ci13xxx_udc", (g)->name)) +#ifdef CONFIG_USB_GADGET_CI13XXX_PCI +#define gadget_is_ci13xxx_pci(g) (!strcmp("ci13xxx_pci", (g)->name)) #else -#define gadget_is_ci13xxx(g) 0 +#define gadget_is_ci13xxx_pci(g) 0 #endif // CONFIG_USB_GADGET_SX2 @@ -148,6 +148,12 @@ #define gadget_is_pch(g) 0 #endif +#ifdef CONFIG_USB_GADGET_CI13XXX_MSM +#define gadget_is_ci13xxx_msm(g) (!strcmp("ci13xxx_msm", (g)->name)) +#else +#define gadget_is_ci13xxx_msm(g) 0 +#endif + /** * usb_gadget_controller_number - support bcdDevice id convention * @gadget: the controller being driven @@ -197,7 +203,7 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) return 0x21; else if (gadget_is_fsl_qe(gadget)) return 0x22; - else if (gadget_is_ci13xxx(gadget)) + else if (gadget_is_ci13xxx_pci(gadget)) return 0x23; else if (gadget_is_langwell(gadget)) return 0x24; @@ -207,6 +213,8 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget) return 0x26; else if (gadget_is_pch(gadget)) return 0x27; + else if (gadget_is_ci13xxx_msm(gadget)) + return 0x28; return -ENOENT; } diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c index b30f85d70480..1210534822d6 100644 --- a/drivers/usb/gadget/imx_udc.c +++ b/drivers/usb/gadget/imx_udc.c @@ -1191,13 +1191,17 @@ static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev) return IRQ_HANDLED; } +#ifndef MX1_INT_USBD0 +#define MX1_INT_USBD0 MX1_USBD_INT0 +#endif + static irqreturn_t imx_udc_bulk_irq(int irq, void *dev) { struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[irq - MX1_USBD_INT0]; + struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[irq - MX1_INT_USBD0]; int intr = __raw_readl(imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - dump_ep_intr(__func__, irq - MX1_USBD_INT0, intr, imx_usb->dev); + dump_ep_intr(__func__, irq - MX1_INT_USBD0, intr, imx_usb->dev); if (!imx_usb->driver) { __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); diff --git a/drivers/usb/gadget/ncm.c b/drivers/usb/gadget/ncm.c new file mode 100644 index 000000000000..99c179ad729d --- /dev/null +++ b/drivers/usb/gadget/ncm.c @@ -0,0 +1,248 @@ +/* + * ncm.c -- NCM gadget driver + * + * Copyright (C) 2010 Nokia Corporation + * Contact: Yauheni Kaliuta <yauheni.kaliuta@nokia.com> + * + * The driver borrows from ether.c which is: + * + * Copyright (C) 2003-2005,2008 David Brownell + * Copyright (C) 2003-2004 Robert Schwebel, Benedikt Spranger + * Copyright (C) 2008 Nokia Corporation + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +/* #define DEBUG */ +/* #define VERBOSE_DEBUG */ + +#include <linux/kernel.h> +#include <linux/utsname.h> + + +#include "u_ether.h" + +#define DRIVER_DESC "NCM Gadget" + +/*-------------------------------------------------------------------------*/ + +/* + * Kbuild is not very cooperative with respect to linking separately + * compiled library objects into one module. So for now we won't use + * separate compilation ... ensuring init/exit sections work to shrink + * the runtime footprint, and giving us at least some parts of what + * a "gcc --combine ... part1.c part2.c part3.c ... " build would. + */ +#include "composite.c" +#include "usbstring.c" +#include "config.c" +#include "epautoconf.c" + +#include "f_ncm.c" +#include "u_ether.c" + +/*-------------------------------------------------------------------------*/ + +/* DO NOT REUSE THESE IDs with a protocol-incompatible driver!! Ever!! + * Instead: allocate your own, using normal USB-IF procedures. + */ + +/* Thanks to NetChip Technologies for donating this product ID. + * It's for devices with only CDC Ethernet configurations. + */ +#define CDC_VENDOR_NUM 0x0525 /* NetChip */ +#define CDC_PRODUCT_NUM 0xa4a1 /* Linux-USB Ethernet Gadget */ + +/*-------------------------------------------------------------------------*/ + +static struct usb_device_descriptor device_desc = { + .bLength = sizeof device_desc, + .bDescriptorType = USB_DT_DEVICE, + + .bcdUSB = cpu_to_le16 (0x0200), + + .bDeviceClass = USB_CLASS_COMM, + .bDeviceSubClass = 0, + .bDeviceProtocol = 0, + /* .bMaxPacketSize0 = f(hardware) */ + + /* Vendor and product id defaults change according to what configs + * we support. (As does bNumConfigurations.) These values can + * also be overridden by module parameters. + */ + .idVendor = cpu_to_le16 (CDC_VENDOR_NUM), + .idProduct = cpu_to_le16 (CDC_PRODUCT_NUM), + /* .bcdDevice = f(hardware) */ + /* .iManufacturer = DYNAMIC */ + /* .iProduct = DYNAMIC */ + /* NO SERIAL NUMBER */ + .bNumConfigurations = 1, +}; + +static struct usb_otg_descriptor otg_descriptor = { + .bLength = sizeof otg_descriptor, + .bDescriptorType = USB_DT_OTG, + + /* REVISIT SRP-only hardware is possible, although + * it would not be called "OTG" ... + */ + .bmAttributes = USB_OTG_SRP | USB_OTG_HNP, +}; + +static const struct usb_descriptor_header *otg_desc[] = { + (struct usb_descriptor_header *) &otg_descriptor, + NULL, +}; + + +/* string IDs are assigned dynamically */ + +#define STRING_MANUFACTURER_IDX 0 +#define STRING_PRODUCT_IDX 1 + +static char manufacturer[50]; + +static struct usb_string strings_dev[] = { + [STRING_MANUFACTURER_IDX].s = manufacturer, + [STRING_PRODUCT_IDX].s = DRIVER_DESC, + { } /* end of list */ +}; + +static struct usb_gadget_strings stringtab_dev = { + .language = 0x0409, /* en-us */ + .strings = strings_dev, +}; + +static struct usb_gadget_strings *dev_strings[] = { + &stringtab_dev, + NULL, +}; + +static u8 hostaddr[ETH_ALEN]; + +/*-------------------------------------------------------------------------*/ + +static int __init ncm_do_config(struct usb_configuration *c) +{ + /* FIXME alloc iConfiguration string, set it in c->strings */ + + if (gadget_is_otg(c->cdev->gadget)) { + c->descriptors = otg_desc; + c->bmAttributes |= USB_CONFIG_ATT_WAKEUP; + } + + return ncm_bind_config(c, hostaddr); +} + +static struct usb_configuration ncm_config_driver = { + /* .label = f(hardware) */ + .label = "CDC Ethernet (NCM)", + .bConfigurationValue = 1, + /* .iConfiguration = DYNAMIC */ + .bmAttributes = USB_CONFIG_ATT_SELFPOWER, +}; + +/*-------------------------------------------------------------------------*/ + +static int __init gncm_bind(struct usb_composite_dev *cdev) +{ + int gcnum; + struct usb_gadget *gadget = cdev->gadget; + int status; + + /* set up network link layer */ + status = gether_setup(cdev->gadget, hostaddr); + if (status < 0) + return status; + + gcnum = usb_gadget_controller_number(gadget); + if (gcnum >= 0) + device_desc.bcdDevice = cpu_to_le16(0x0300 | gcnum); + else { + /* We assume that can_support_ecm() tells the truth; + * but if the controller isn't recognized at all then + * that assumption is a bit more likely to be wrong. + */ + dev_warn(&gadget->dev, + "controller '%s' not recognized; trying %s\n", + gadget->name, + ncm_config_driver.label); + device_desc.bcdDevice = + cpu_to_le16(0x0300 | 0x0099); + } + + + /* Allocate string descriptor numbers ... note that string + * contents can be overridden by the composite_dev glue. + */ + + /* device descriptor strings: manufacturer, product */ + snprintf(manufacturer, sizeof manufacturer, "%s %s with %s", + init_utsname()->sysname, init_utsname()->release, + gadget->name); + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_MANUFACTURER_IDX].id = status; + device_desc.iManufacturer = status; + + status = usb_string_id(cdev); + if (status < 0) + goto fail; + strings_dev[STRING_PRODUCT_IDX].id = status; + device_desc.iProduct = status; + + status = usb_add_config(cdev, &ncm_config_driver, + ncm_do_config); + if (status < 0) + goto fail; + + dev_info(&gadget->dev, "%s\n", DRIVER_DESC); + + return 0; + +fail: + gether_cleanup(); + return status; +} + +static int __exit gncm_unbind(struct usb_composite_dev *cdev) +{ + gether_cleanup(); + return 0; +} + +static struct usb_composite_driver ncm_driver = { + .name = "g_ncm", + .dev = &device_desc, + .strings = dev_strings, + .unbind = __exit_p(gncm_unbind), +}; + +MODULE_DESCRIPTION(DRIVER_DESC); +MODULE_AUTHOR("Yauheni Kaliuta"); +MODULE_LICENSE("GPL"); + +static int __init init(void) +{ + return usb_composite_probe(&ncm_driver, gncm_bind); +} +module_init(init); + +static void __exit cleanup(void) +{ + usb_composite_unregister(&ncm_driver); +} +module_exit(cleanup); diff --git a/drivers/usb/gadget/pch_udc.c b/drivers/usb/gadget/pch_udc.c index 4a5256977d29..0c8dd81dddca 100644 --- a/drivers/usb/gadget/pch_udc.c +++ b/drivers/usb/gadget/pch_udc.c @@ -337,7 +337,7 @@ struct pch_udc_dev { struct usb_gadget_driver *driver; struct pci_dev *pdev; struct pch_udc_ep ep[PCH_UDC_EP_NUM]; - spinlock_t lock; + spinlock_t lock; /* protects all state */ unsigned active:1, stall:1, prot_stall:1, @@ -1980,7 +1980,7 @@ static void pch_udc_svc_data_in(struct pch_udc_dev *dev, int ep_num) pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); } - if (epsts & UDC_EPSTS_RCS) + if (epsts & UDC_EPSTS_RCS) { if (!dev->prot_stall) { pch_udc_ep_clear_stall(ep); } else { @@ -1988,6 +1988,7 @@ static void pch_udc_svc_data_in(struct pch_udc_dev *dev, int ep_num) pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); } + } if (epsts & UDC_EPSTS_TDC) pch_udc_complete_transfer(ep); /* On IN interrupt, provide data if we have any */ @@ -2028,7 +2029,7 @@ static void pch_udc_svc_data_out(struct pch_udc_dev *dev, int ep_num) pch_udc_ep_set_stall(ep); pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); - if (epsts & UDC_EPSTS_RCS) + if (epsts & UDC_EPSTS_RCS) { if (!dev->prot_stall) { pch_udc_ep_clear_stall(ep); } else { @@ -2036,6 +2037,7 @@ static void pch_udc_svc_data_out(struct pch_udc_dev *dev, int ep_num) pch_udc_enable_ep_interrupts(ep->dev, PCH_UDC_EPINT(ep->in, ep->num)); } + } if (((epsts & UDC_EPSTS_OUT_MASK) >> UDC_EPSTS_OUT_SHIFT) == UDC_EPSTS_OUT_DATA) { if (ep->dev->prot_stall == 1) { @@ -2148,7 +2150,10 @@ static void pch_udc_svc_control_out(struct pch_udc_dev *dev) pch_udc_set_dma(dev, DMA_DIR_RX); } else { /* control write */ - pch_udc_svc_data_out(dev, UDC_EP0OUT_IDX); + /* next function will pickuo an clear the status */ + ep->epsts = stat; + + pch_udc_svc_data_out(dev, 0); /* re-program desc. pointer for possible ZLPs */ pch_udc_ep_set_ddptr(ep, ep->td_data_phys); pch_udc_set_dma(dev, DMA_DIR_RX); @@ -2635,12 +2640,13 @@ static int init_dma_pools(struct pch_udc_dev *dev) return 0; } -int usb_gadget_register_driver(struct usb_gadget_driver *driver) +int usb_gadget_probe_driver(struct usb_gadget_driver *driver, + int (*bind)(struct usb_gadget *)) { struct pch_udc_dev *dev = pch_udc; int retval; - if (!driver || (driver->speed == USB_SPEED_UNKNOWN) || !driver->bind || + if (!driver || (driver->speed == USB_SPEED_UNKNOWN) || !bind || !driver->setup || !driver->unbind || !driver->disconnect) { dev_err(&dev->pdev->dev, "%s: invalid driver parameter\n", __func__); @@ -2659,7 +2665,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) dev->gadget.dev.driver = &driver->driver; /* Invoke the bind routine of the gadget driver */ - retval = driver->bind(&dev->gadget); + retval = bind(&dev->gadget); if (retval) { dev_err(&dev->pdev->dev, "%s: binding to %s returning %d\n", @@ -2677,7 +2683,7 @@ int usb_gadget_register_driver(struct usb_gadget_driver *driver) dev->connected = 1; return 0; } -EXPORT_SYMBOL(usb_gadget_register_driver); +EXPORT_SYMBOL(usb_gadget_probe_driver); int usb_gadget_unregister_driver(struct usb_gadget_driver *driver) { @@ -2902,7 +2908,7 @@ finished: return retval; } -static const struct pci_device_id pch_udc_pcidev_id[] = { +static DEFINE_PCI_DEVICE_TABLE(pch_udc_pcidev_id) = { { PCI_DEVICE(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_EG20T_UDC), .class = (PCI_CLASS_SERIAL_USB << 8) | 0xfe, diff --git a/drivers/usb/gadget/u_ether.c b/drivers/usb/gadget/u_ether.c index cb23355f52d3..a7826a6dcd8c 100644 --- a/drivers/usb/gadget/u_ether.c +++ b/drivers/usb/gadget/u_ether.c @@ -240,6 +240,9 @@ rx_submit(struct eth_dev *dev, struct usb_request *req, gfp_t gfp_flags) size += out->maxpacket - 1; size -= size % out->maxpacket; + if (dev->port_usb->is_fixed) + size = max(size, dev->port_usb->fixed_out_len); + skb = alloc_skb(size + NET_IP_ALIGN, gfp_flags); if (skb == NULL) { DBG(dev, "no rx skb\n"); @@ -578,12 +581,19 @@ static netdev_tx_t eth_start_xmit(struct sk_buff *skb, req->context = skb; req->complete = tx_complete; + /* NCM requires no zlp if transfer is dwNtbInMaxSize */ + if (dev->port_usb->is_fixed && + length == dev->port_usb->fixed_in_len && + (length % in->maxpacket) == 0) + req->zero = 0; + else + req->zero = 1; + /* use zlp framing on tx for strict CDC-Ether conformance, * though any robust network rx path ignores extra padding. * and some hardware doesn't like to write zlps. */ - req->zero = 1; - if (!dev->zlp && (length % in->maxpacket) == 0) + if (req->zero && !dev->zlp && (length % in->maxpacket) == 0) length++; req->length = length; diff --git a/drivers/usb/gadget/u_ether.h b/drivers/usb/gadget/u_ether.h index 3c8c0c9f9d72..b56e1e7d423c 100644 --- a/drivers/usb/gadget/u_ether.h +++ b/drivers/usb/gadget/u_ether.h @@ -62,6 +62,10 @@ struct gether { /* hooks for added framing, as needed for RNDIS and EEM. */ u32 header_len; + /* NCM requires fixed size bundles */ + bool is_fixed; + u32 fixed_out_len; + u32 fixed_in_len; struct sk_buff *(*wrap)(struct gether *port, struct sk_buff *skb); int (*unwrap)(struct gether *port, @@ -103,6 +107,7 @@ static inline bool can_support_ecm(struct usb_gadget *gadget) /* each configuration may bind one instance of an ethernet link */ int geth_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int ecm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); +int ncm_bind_config(struct usb_configuration *c, u8 ethaddr[ETH_ALEN]); int eem_bind_config(struct usb_configuration *c); #ifdef USB_ETH_RNDIS diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig index 6a7c688b4781..b9cc31172fbd 100644 --- a/drivers/usb/host/Kconfig +++ b/drivers/usb/host/Kconfig @@ -141,6 +141,17 @@ config USB_EHCI_HCD_OMAP Enables support for the on-chip EHCI controller on OMAP3 and later chips. +config USB_EHCI_MSM + bool "Support for MSM on-chip EHCI USB controller" + depends on USB_EHCI_HCD && ARCH_MSM + select USB_EHCI_ROOT_HUB_TT + select USB_MSM_OTG_72K + ---help--- + Enables support for the USB Host controller present on the + Qualcomm chipsets. Root Hub has inbuilt TT. + This driver depends on OTG driver for PHY initialization, + clock management, powering up VBUS, and power management. + config USB_EHCI_HCD_PPC_OF bool "EHCI support for PPC USB controller on OF platform bus" depends on USB_EHCI_HCD && PPC_OF diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index abe8336ebffa..48021d26024c 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -114,6 +114,9 @@ MODULE_PARM_DESC(hird, "host initiated resume duration, +1 for each 75us\n"); #define INTR_MASK (STS_IAA | STS_FATAL | STS_PCD | STS_ERR | STS_INT) +/* for ASPM quirk of ISOC on AMD SB800 */ +static struct pci_dev *amd_nb_dev; + /*-------------------------------------------------------------------------*/ #include "ehci.h" @@ -529,6 +532,11 @@ static void ehci_stop (struct usb_hcd *hcd) spin_unlock_irq (&ehci->lock); ehci_mem_cleanup (ehci); + if (amd_nb_dev) { + pci_dev_put(amd_nb_dev); + amd_nb_dev = NULL; + } + #ifdef EHCI_STATS ehci_dbg (ehci, "irq normal %ld err %ld reclaim %ld (lost %ld)\n", ehci->stats.normal, ehci->stats.error, ehci->stats.reclaim, @@ -1231,6 +1239,11 @@ MODULE_LICENSE ("GPL"); #define PLATFORM_DRIVER spear_ehci_hcd_driver #endif +#ifdef CONFIG_USB_EHCI_MSM +#include "ehci-msm.c" +#define PLATFORM_DRIVER ehci_msm_driver +#endif + #if !defined(PCI_DRIVER) && !defined(PLATFORM_DRIVER) && \ !defined(PS3_SYSTEM_BUS_DRIVER) && !defined(OF_PLATFORM_DRIVER) && \ !defined(XILINX_OF_PLATFORM_DRIVER) diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c new file mode 100644 index 000000000000..413f4deca532 --- /dev/null +++ b/drivers/usb/host/ehci-msm.c @@ -0,0 +1,345 @@ +/* ehci-msm.c - HSUSB Host Controller Driver Implementation + * + * Copyright (c) 2008-2010, Code Aurora Forum. All rights reserved. + * + * Partly derived from ehci-fsl.c and ehci-hcd.c + * Copyright (c) 2000-2004 by David Brownell + * Copyright (c) 2005 MontaVista Software + * + * All source code in this file is licensed under the following license except + * where indicated. + * + * 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. + * + * 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, you can find it at http://www.fsf.org + */ + +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/pm_runtime.h> + +#include <linux/usb/otg.h> +#include <linux/usb/msm_hsusb_hw.h> + +#define MSM_USB_BASE (hcd->regs) + +static struct otg_transceiver *otg; + +/* + * ehci_run defined in drivers/usb/host/ehci-hcd.c reset the controller and + * the configuration settings in ehci_msm_reset vanish after controller is + * reset. Resetting the controler in ehci_run seems to be un-necessary + * provided HCD reset the controller before calling ehci_run. Most of the HCD + * do but some are not. So this function is same as ehci_run but we don't + * reset the controller here. + */ +static int ehci_msm_run(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + u32 temp; + u32 hcc_params; + + hcd->uses_new_polling = 1; + + ehci_writel(ehci, ehci->periodic_dma, &ehci->regs->frame_list); + ehci_writel(ehci, (u32)ehci->async->qh_dma, &ehci->regs->async_next); + + /* + * 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. + * streaming mappings for I/O buffers, like pci_map_single(), + * can return segments above 4GB, if the device allows. + * + * NOTE: the dma mask is visible through dma_supported(), so + * drivers can pass this info along ... like NETIF_F_HIGHDMA, + * Scsi_Host.highmem_io, and so forth. It's readonly to all + * host side drivers though. + */ + hcc_params = ehci_readl(ehci, &ehci->caps->hcc_params); + if (HCC_64BIT_ADDR(hcc_params)) + ehci_writel(ehci, 0, &ehci->regs->segment); + + /* + * Philips, Intel, and maybe others need CMD_RUN before the + * root hub will detect new devices (why?); NEC doesn't + */ + ehci->command &= ~(CMD_LRESET|CMD_IAAD|CMD_PSE|CMD_ASE|CMD_RESET); + ehci->command |= CMD_RUN; + ehci_writel(ehci, ehci->command, &ehci->regs->command); + dbg_cmd(ehci, "init", ehci->command); + + /* + * Start, enabling full USB 2.0 functionality ... usb 1.1 devices + * are explicitly handed to companion controller(s), so no TT is + * involved with the root hub. (Except where one is integrated, + * and there's no companion controller unless maybe for USB OTG.) + * + * Turning on the CF flag will transfer ownership of all ports + * from the companions to the EHCI controller. If any of the + * companions are in the middle of a port reset at the time, it + * could cause trouble. Write-locking ehci_cf_port_reset_rwsem + * guarantees that no resets are in progress. After we set CF, + * a short delay lets the hardware catch up; new resets shouldn't + * be started before the port switching actions could complete. + */ + down_write(&ehci_cf_port_reset_rwsem); + hcd->state = HC_STATE_RUNNING; + ehci_writel(ehci, FLAG_CF, &ehci->regs->configured_flag); + ehci_readl(ehci, &ehci->regs->command); /* unblock posted writes */ + usleep_range(5000, 5500); + up_write(&ehci_cf_port_reset_rwsem); + ehci->last_periodic_enable = ktime_get_real(); + + temp = HC_VERSION(ehci_readl(ehci, &ehci->caps->hc_capbase)); + ehci_info(ehci, + "USB %x.%x started, EHCI %x.%02x%s\n", + ((ehci->sbrn & 0xf0)>>4), (ehci->sbrn & 0x0f), + temp >> 8, temp & 0xff, + ignore_oc ? ", overcurrent ignored" : ""); + + ehci_writel(ehci, INTR_MASK, + &ehci->regs->intr_enable); /* Turn On Interrupts */ + + /* GRR this is run-once init(), being done every time the HC starts. + * So long as they're part of class devices, we can't do it init() + * since the class device isn't created that early. + */ + create_debug_files(ehci); + create_companion_file(ehci); + + return 0; +} + +static int ehci_msm_reset(struct usb_hcd *hcd) +{ + struct ehci_hcd *ehci = hcd_to_ehci(hcd); + int retval; + + ehci->caps = USB_CAPLENGTH; + ehci->regs = USB_CAPLENGTH + + HC_LENGTH(ehci_readl(ehci, &ehci->caps->hc_capbase)); + + /* cache the data to minimize the chip reads*/ + ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + + hcd->has_tt = 1; + ehci->sbrn = HCD_USB2; + + /* data structure init */ + retval = ehci_init(hcd); + if (retval) + return retval; + + retval = ehci_reset(ehci); + if (retval) + return retval; + + /* bursts of unspecified length. */ + writel(0, USB_AHBBURST); + /* Use the AHB transactor */ + writel(0, USB_AHBMODE); + /* Disable streaming mode and select host mode */ + writel(0x13, USB_USBMODE); + + ehci_port_power(ehci, 1); + return 0; +} + +static struct hc_driver msm_hc_driver = { + .description = hcd_name, + .product_desc = "Qualcomm On-Chip EHCI Host Controller", + .hcd_priv_size = sizeof(struct ehci_hcd), + + /* + * generic hardware linkage + */ + .irq = ehci_irq, + .flags = HCD_USB2 | HCD_MEMORY, + + .reset = ehci_msm_reset, + .start = ehci_msm_run, + + .stop = ehci_stop, + .shutdown = ehci_shutdown, + + /* + * managing i/o requests and associated device resources + */ + .urb_enqueue = ehci_urb_enqueue, + .urb_dequeue = ehci_urb_dequeue, + .endpoint_disable = ehci_endpoint_disable, + .endpoint_reset = ehci_endpoint_reset, + .clear_tt_buffer_complete = ehci_clear_tt_buffer_complete, + + /* + * scheduling support + */ + .get_frame_number = ehci_get_frame, + + /* + * root hub support + */ + .hub_status_data = ehci_hub_status_data, + .hub_control = ehci_hub_control, + .relinquish_port = ehci_relinquish_port, + .port_handed_over = ehci_port_handed_over, + + /* + * PM support + */ + .bus_suspend = ehci_bus_suspend, + .bus_resume = ehci_bus_resume, +}; + +static int ehci_msm_probe(struct platform_device *pdev) +{ + struct usb_hcd *hcd; + struct resource *res; + int ret; + + dev_dbg(&pdev->dev, "ehci_msm proble\n"); + + hcd = usb_create_hcd(&msm_hc_driver, &pdev->dev, dev_name(&pdev->dev)); + if (!hcd) { + dev_err(&pdev->dev, "Unable to create HCD\n"); + return -ENOMEM; + } + + hcd->irq = platform_get_irq(pdev, 0); + if (hcd->irq < 0) { + dev_err(&pdev->dev, "Unable to get IRQ resource\n"); + ret = hcd->irq; + goto put_hcd; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "Unable to get memory resource\n"); + ret = -ENODEV; + goto put_hcd; + } + + hcd->rsrc_start = res->start; + hcd->rsrc_len = resource_size(res); + hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + if (!hcd->regs) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto put_hcd; + } + + /* + * OTG driver takes care of PHY initialization, clock management, + * powering up VBUS, mapping of registers address space and power + * management. + */ + otg = otg_get_transceiver(); + if (!otg) { + dev_err(&pdev->dev, "unable to find transceiver\n"); + ret = -ENODEV; + goto unmap; + } + + ret = otg_set_host(otg, &hcd->self); + if (ret < 0) { + dev_err(&pdev->dev, "unable to register with transceiver\n"); + goto put_transceiver; + } + + device_init_wakeup(&pdev->dev, 1); + /* + * OTG device parent of HCD takes care of putting + * hardware into low power mode. + */ + pm_runtime_no_callbacks(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; + +put_transceiver: + otg_put_transceiver(otg); +unmap: + iounmap(hcd->regs); +put_hcd: + usb_put_hcd(hcd); + + return ret; +} + +static int __devexit ehci_msm_remove(struct platform_device *pdev) +{ + struct usb_hcd *hcd = platform_get_drvdata(pdev); + + device_init_wakeup(&pdev->dev, 0); + pm_runtime_disable(&pdev->dev); + pm_runtime_set_suspended(&pdev->dev); + + otg_set_host(otg, NULL); + otg_put_transceiver(otg); + + usb_put_hcd(hcd); + + return 0; +} + +#ifdef CONFIG_PM +static int ehci_msm_pm_suspend(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + bool wakeup = device_may_wakeup(dev); + + dev_dbg(dev, "ehci-msm PM suspend\n"); + + /* + * EHCI helper function has also the same check before manipulating + * port wakeup flags. We do check here the same condition before + * calling the same helper function to avoid bringing hardware + * from Low power mode when there is no need for adjusting port + * wakeup flags. + */ + if (hcd->self.root_hub->do_remote_wakeup && !wakeup) { + pm_runtime_resume(dev); + ehci_prepare_ports_for_controller_suspend(hcd_to_ehci(hcd), + wakeup); + } + + return 0; +} + +static int ehci_msm_pm_resume(struct device *dev) +{ + struct usb_hcd *hcd = dev_get_drvdata(dev); + + dev_dbg(dev, "ehci-msm PM resume\n"); + ehci_prepare_ports_for_controller_resume(hcd_to_ehci(hcd)); + + return 0; +} +#else +#define ehci_msm_pm_suspend NULL +#define ehci_msm_pm_resume NULL +#endif + +static const struct dev_pm_ops ehci_msm_dev_pm_ops = { + .suspend = ehci_msm_pm_suspend, + .resume = ehci_msm_pm_resume, +}; + +static struct platform_driver ehci_msm_driver = { + .probe = ehci_msm_probe, + .remove = __devexit_p(ehci_msm_remove), + .driver = { + .name = "msm_hsusb_host", + .pm = &ehci_msm_dev_pm_ops, + }, +}; diff --git a/drivers/usb/host/ehci-pci.c b/drivers/usb/host/ehci-pci.c index 56c78e93440f..35a533e4c01d 100644 --- a/drivers/usb/host/ehci-pci.c +++ b/drivers/usb/host/ehci-pci.c @@ -44,6 +44,35 @@ static int ehci_pci_reinit(struct ehci_hcd *ehci, struct pci_dev *pdev) return 0; } +static int ehci_quirk_amd_SB800(struct ehci_hcd *ehci) +{ + struct pci_dev *amd_smbus_dev; + u8 rev = 0; + + amd_smbus_dev = pci_get_device(PCI_VENDOR_ID_ATI, 0x4385, NULL); + if (!amd_smbus_dev) + return 0; + + pci_read_config_byte(amd_smbus_dev, PCI_REVISION_ID, &rev); + if (rev < 0x40) { + pci_dev_put(amd_smbus_dev); + amd_smbus_dev = NULL; + return 0; + } + + if (!amd_nb_dev) + amd_nb_dev = pci_get_device(PCI_VENDOR_ID_AMD, 0x1510, NULL); + if (!amd_nb_dev) + ehci_err(ehci, "QUIRK: unable to get AMD NB device\n"); + + ehci_info(ehci, "QUIRK: Enable AMD SB800 L1 fix\n"); + + pci_dev_put(amd_smbus_dev); + amd_smbus_dev = NULL; + + return 1; +} + /* called during probe() after chip reset completes */ static int ehci_pci_setup(struct usb_hcd *hcd) { @@ -102,6 +131,9 @@ static int ehci_pci_setup(struct usb_hcd *hcd) /* cache this readonly data; minimize chip reads */ ehci->hcs_params = ehci_readl(ehci, &ehci->caps->hcs_params); + if (ehci_quirk_amd_SB800(ehci)) + ehci->amd_l1_fix = 1; + retval = ehci_halt(ehci); if (retval) return retval; diff --git a/drivers/usb/host/ehci-sched.c b/drivers/usb/host/ehci-sched.c index a92526d6e5ae..724ba7133c4f 100644 --- a/drivers/usb/host/ehci-sched.c +++ b/drivers/usb/host/ehci-sched.c @@ -1583,6 +1583,63 @@ itd_link (struct ehci_hcd *ehci, unsigned frame, struct ehci_itd *itd) *hw_p = cpu_to_hc32(ehci, itd->itd_dma | Q_TYPE_ITD); } +#define AB_REG_BAR_LOW 0xe0 +#define AB_REG_BAR_HIGH 0xe1 +#define AB_INDX(addr) ((addr) + 0x00) +#define AB_DATA(addr) ((addr) + 0x04) +#define NB_PCIE_INDX_ADDR 0xe0 +#define NB_PCIE_INDX_DATA 0xe4 +#define NB_PIF0_PWRDOWN_0 0x01100012 +#define NB_PIF0_PWRDOWN_1 0x01100013 + +static void ehci_quirk_amd_L1(struct ehci_hcd *ehci, int disable) +{ + u32 addr, addr_low, addr_high, val; + + outb_p(AB_REG_BAR_LOW, 0xcd6); + addr_low = inb_p(0xcd7); + outb_p(AB_REG_BAR_HIGH, 0xcd6); + addr_high = inb_p(0xcd7); + addr = addr_high << 8 | addr_low; + outl_p(0x30, AB_INDX(addr)); + outl_p(0x40, AB_DATA(addr)); + outl_p(0x34, AB_INDX(addr)); + val = inl_p(AB_DATA(addr)); + + if (disable) { + val &= ~0x8; + val |= (1 << 4) | (1 << 9); + } else { + val |= 0x8; + val &= ~((1 << 4) | (1 << 9)); + } + outl_p(val, AB_DATA(addr)); + + if (amd_nb_dev) { + addr = NB_PIF0_PWRDOWN_0; + pci_write_config_dword(amd_nb_dev, NB_PCIE_INDX_ADDR, addr); + pci_read_config_dword(amd_nb_dev, NB_PCIE_INDX_DATA, &val); + if (disable) + val &= ~(0x3f << 7); + else + val |= 0x3f << 7; + + pci_write_config_dword(amd_nb_dev, NB_PCIE_INDX_DATA, val); + + addr = NB_PIF0_PWRDOWN_1; + pci_write_config_dword(amd_nb_dev, NB_PCIE_INDX_ADDR, addr); + pci_read_config_dword(amd_nb_dev, NB_PCIE_INDX_DATA, &val); + if (disable) + val &= ~(0x3f << 7); + else + val |= 0x3f << 7; + + pci_write_config_dword(amd_nb_dev, NB_PCIE_INDX_DATA, val); + } + + return; +} + /* fit urb's itds into the selected schedule slot; activate as needed */ static int itd_link_urb ( @@ -1609,6 +1666,12 @@ itd_link_urb ( urb->interval, next_uframe >> 3, next_uframe & 0x7); } + + if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { + if (ehci->amd_l1_fix == 1) + ehci_quirk_amd_L1(ehci, 1); + } + ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++; /* fill iTDs uframe by uframe */ @@ -1733,6 +1796,11 @@ itd_complete ( (void) disable_periodic(ehci); ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; + if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { + if (ehci->amd_l1_fix == 1) + ehci_quirk_amd_L1(ehci, 0); + } + if (unlikely(list_is_singular(&stream->td_list))) { ehci_to_hcd(ehci)->self.bandwidth_allocated -= stream->bandwidth; @@ -2018,6 +2086,12 @@ sitd_link_urb ( (next_uframe >> 3) & (ehci->periodic_size - 1), stream->interval, hc32_to_cpu(ehci, stream->splits)); } + + if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { + if (ehci->amd_l1_fix == 1) + ehci_quirk_amd_L1(ehci, 1); + } + ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs++; /* fill sITDs frame by frame */ @@ -2118,6 +2192,11 @@ sitd_complete ( (void) disable_periodic(ehci); ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs--; + if (ehci_to_hcd(ehci)->self.bandwidth_isoc_reqs == 0) { + if (ehci->amd_l1_fix == 1) + ehci_quirk_amd_L1(ehci, 0); + } + if (list_is_singular(&stream->td_list)) { ehci_to_hcd(ehci)->self.bandwidth_allocated -= stream->bandwidth; diff --git a/drivers/usb/host/ehci.h b/drivers/usb/host/ehci.h index bde823f704e9..fd1c53da89e4 100644 --- a/drivers/usb/host/ehci.h +++ b/drivers/usb/host/ehci.h @@ -130,6 +130,7 @@ struct ehci_hcd { /* one per controller */ unsigned has_amcc_usb23:1; unsigned need_io_watchdog:1; unsigned broken_periodic:1; + unsigned amd_l1_fix:1; unsigned fs_i_thresh:1; /* Intel iso scheduling */ /* required for usb32 quirk */ diff --git a/drivers/usb/host/uhci-q.c b/drivers/usb/host/uhci-q.c index 2090b45eb606..af77abb5c68b 100644 --- a/drivers/usb/host/uhci-q.c +++ b/drivers/usb/host/uhci-q.c @@ -29,7 +29,7 @@ static void uhci_set_next_interrupt(struct uhci_hcd *uhci) { if (uhci->is_stopped) mod_timer(&uhci_to_hcd(uhci)->rh_timer, jiffies); - uhci->term_td->status |= cpu_to_le32(TD_CTRL_IOC); + uhci->term_td->status |= cpu_to_le32(TD_CTRL_IOC); } static inline void uhci_clear_next_interrupt(struct uhci_hcd *uhci) @@ -195,7 +195,9 @@ static inline void uhci_remove_td_from_frame_list(struct uhci_hcd *uhci, } else { struct uhci_td *ntd; - ntd = list_entry(td->fl_list.next, struct uhci_td, fl_list); + ntd = list_entry(td->fl_list.next, + struct uhci_td, + fl_list); uhci->frame[td->frame] = LINK_TO_TD(ntd); uhci->frame_cpu[td->frame] = ntd; } @@ -728,7 +730,7 @@ static inline struct urb_priv *uhci_alloc_urb_priv(struct uhci_hcd *uhci, urbp->urb = urb; urb->hcpriv = urbp; - + INIT_LIST_HEAD(&urbp->node); INIT_LIST_HEAD(&urbp->td_list); @@ -846,7 +848,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, /* Alternate Data0/1 (start with Data1) */ destination ^= TD_TOKEN_TOGGLE; - + uhci_add_td_to_urbp(td, urbp); uhci_fill_td(td, status, destination | uhci_explen(pktsze), data); @@ -857,7 +859,7 @@ static int uhci_submit_control(struct uhci_hcd *uhci, struct urb *urb, } /* - * Build the final TD for control status + * Build the final TD for control status */ td = uhci_alloc_td(uhci); if (!td) diff --git a/drivers/usb/host/whci/hcd.c b/drivers/usb/host/whci/hcd.c index 72b6892fda67..9546f6cd01f0 100644 --- a/drivers/usb/host/whci/hcd.c +++ b/drivers/usb/host/whci/hcd.c @@ -356,7 +356,7 @@ static void __exit whci_hc_driver_exit(void) module_exit(whci_hc_driver_exit); /* PCI device ID's that we handle (so it gets loaded) */ -static struct pci_device_id whci_hcd_id_table[] = { +static struct pci_device_id __used whci_hcd_id_table[] = { { PCI_DEVICE_CLASS(PCI_CLASS_WIRELESS_WHCI, ~0) }, { /* empty last entry */ } }; diff --git a/drivers/usb/otg/Kconfig b/drivers/usb/otg/Kconfig index e3ecc211fe5f..9fb875d5f09c 100644 --- a/drivers/usb/otg/Kconfig +++ b/drivers/usb/otg/Kconfig @@ -93,4 +93,24 @@ config USB_LANGWELL_OTG To compile this driver as a module, choose M here: the module will be called langwell_otg. +config USB_MSM_OTG_72K + tristate "OTG support for Qualcomm on-chip USB controller" + depends on (USB || USB_GADGET) && ARCH_MSM + select USB_OTG_UTILS + help + Enable this to support the USB OTG transceiver on MSM chips. It + handles PHY initialization, clock management, and workarounds + required after resetting the hardware and power management. + This driver is required even for peripheral only or host only + mode configurations. + +config AB8500_USB + tristate "AB8500 USB Transceiver Driver" + depends on AB8500_CORE + select USB_OTG_UTILS + help + Enable this to support the USB OTG transceiver in AB8500 chip. + This transceiver supports high and full speed devices plus, + in host mode, low speed. + endif # USB || OTG diff --git a/drivers/usb/otg/Makefile b/drivers/usb/otg/Makefile index ff01f5fe0bd5..a520e715cfd6 100644 --- a/drivers/usb/otg/Makefile +++ b/drivers/usb/otg/Makefile @@ -16,3 +16,5 @@ obj-$(CONFIG_TWL6030_USB) += twl6030-usb.o obj-$(CONFIG_USB_LANGWELL_OTG) += langwell_otg.o obj-$(CONFIG_NOP_USB_XCEIV) += nop-usb-xceiv.o obj-$(CONFIG_USB_ULPI) += ulpi.o +obj-$(CONFIG_USB_MSM_OTG_72K) += msm72k_otg.o +obj-$(CONFIG_AB8500_USB) += ab8500-usb.o diff --git a/drivers/usb/otg/ab8500-usb.c b/drivers/usb/otg/ab8500-usb.c new file mode 100644 index 000000000000..d14736b3107b --- /dev/null +++ b/drivers/usb/otg/ab8500-usb.c @@ -0,0 +1,585 @@ +/* + * drivers/usb/otg/ab8500_usb.c + * + * USB transceiver driver for AB8500 chip + * + * Copyright (C) 2010 ST-Ericsson AB + * Mian Yousaf Kaukab <mian.yousaf.kaukab@stericsson.com> + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + * + */ + +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/usb/otg.h> +#include <linux/slab.h> +#include <linux/notifier.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <linux/mfd/abx500.h> +#include <linux/mfd/ab8500.h> + +#define AB8500_MAIN_WD_CTRL_REG 0x01 +#define AB8500_USB_LINE_STAT_REG 0x80 +#define AB8500_USB_PHY_CTRL_REG 0x8A + +#define AB8500_BIT_OTG_STAT_ID (1 << 0) +#define AB8500_BIT_PHY_CTRL_HOST_EN (1 << 0) +#define AB8500_BIT_PHY_CTRL_DEVICE_EN (1 << 1) +#define AB8500_BIT_WD_CTRL_ENABLE (1 << 0) +#define AB8500_BIT_WD_CTRL_KICK (1 << 1) + +#define AB8500_V1x_LINK_STAT_WAIT (HZ/10) +#define AB8500_WD_KICK_DELAY_US 100 /* usec */ +#define AB8500_WD_V11_DISABLE_DELAY_US 100 /* usec */ +#define AB8500_WD_V10_DISABLE_DELAY_MS 100 /* ms */ + +/* Usb line status register */ +enum ab8500_usb_link_status { + USB_LINK_NOT_CONFIGURED = 0, + USB_LINK_STD_HOST_NC, + USB_LINK_STD_HOST_C_NS, + USB_LINK_STD_HOST_C_S, + USB_LINK_HOST_CHG_NM, + USB_LINK_HOST_CHG_HS, + USB_LINK_HOST_CHG_HS_CHIRP, + USB_LINK_DEDICATED_CHG, + USB_LINK_ACA_RID_A, + USB_LINK_ACA_RID_B, + USB_LINK_ACA_RID_C_NM, + USB_LINK_ACA_RID_C_HS, + USB_LINK_ACA_RID_C_HS_CHIRP, + USB_LINK_HM_IDGND, + USB_LINK_RESERVED, + USB_LINK_NOT_VALID_LINK +}; + +struct ab8500_usb { + struct otg_transceiver otg; + struct device *dev; + int irq_num_id_rise; + int irq_num_id_fall; + int irq_num_vbus_rise; + int irq_num_vbus_fall; + int irq_num_link_status; + unsigned vbus_draw; + struct delayed_work dwork; + struct work_struct phy_dis_work; + unsigned long link_status_wait; + int rev; +}; + +static inline struct ab8500_usb *xceiv_to_ab(struct otg_transceiver *x) +{ + return container_of(x, struct ab8500_usb, otg); +} + +static void ab8500_usb_wd_workaround(struct ab8500_usb *ab) +{ + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, + AB8500_MAIN_WD_CTRL_REG, + AB8500_BIT_WD_CTRL_ENABLE); + + udelay(AB8500_WD_KICK_DELAY_US); + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, + AB8500_MAIN_WD_CTRL_REG, + (AB8500_BIT_WD_CTRL_ENABLE + | AB8500_BIT_WD_CTRL_KICK)); + + if (ab->rev > 0x10) /* v1.1 v2.0 */ + udelay(AB8500_WD_V11_DISABLE_DELAY_US); + else /* v1.0 */ + msleep(AB8500_WD_V10_DISABLE_DELAY_MS); + + abx500_set_register_interruptible(ab->dev, + AB8500_SYS_CTRL2_BLOCK, + AB8500_MAIN_WD_CTRL_REG, + 0); +} + +static void ab8500_usb_phy_ctrl(struct ab8500_usb *ab, bool sel_host, + bool enable) +{ + u8 ctrl_reg; + abx500_get_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + &ctrl_reg); + if (sel_host) { + if (enable) + ctrl_reg |= AB8500_BIT_PHY_CTRL_HOST_EN; + else + ctrl_reg &= ~AB8500_BIT_PHY_CTRL_HOST_EN; + } else { + if (enable) + ctrl_reg |= AB8500_BIT_PHY_CTRL_DEVICE_EN; + else + ctrl_reg &= ~AB8500_BIT_PHY_CTRL_DEVICE_EN; + } + + abx500_set_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_PHY_CTRL_REG, + ctrl_reg); + + /* Needed to enable the phy.*/ + if (enable) + ab8500_usb_wd_workaround(ab); +} + +#define ab8500_usb_host_phy_en(ab) ab8500_usb_phy_ctrl(ab, true, true) +#define ab8500_usb_host_phy_dis(ab) ab8500_usb_phy_ctrl(ab, true, false) +#define ab8500_usb_peri_phy_en(ab) ab8500_usb_phy_ctrl(ab, false, true) +#define ab8500_usb_peri_phy_dis(ab) ab8500_usb_phy_ctrl(ab, false, false) + +static int ab8500_usb_link_status_update(struct ab8500_usb *ab) +{ + u8 reg; + enum ab8500_usb_link_status lsts; + void *v = NULL; + enum usb_xceiv_events event; + + abx500_get_register_interruptible(ab->dev, + AB8500_USB, + AB8500_USB_LINE_STAT_REG, + ®); + + lsts = (reg >> 3) & 0x0F; + + switch (lsts) { + case USB_LINK_NOT_CONFIGURED: + case USB_LINK_RESERVED: + case USB_LINK_NOT_VALID_LINK: + /* TODO: Disable regulators. */ + ab8500_usb_host_phy_dis(ab); + ab8500_usb_peri_phy_dis(ab); + ab->otg.state = OTG_STATE_B_IDLE; + ab->otg.default_a = false; + ab->vbus_draw = 0; + event = USB_EVENT_NONE; + break; + + case USB_LINK_STD_HOST_NC: + case USB_LINK_STD_HOST_C_NS: + case USB_LINK_STD_HOST_C_S: + case USB_LINK_HOST_CHG_NM: + case USB_LINK_HOST_CHG_HS: + case USB_LINK_HOST_CHG_HS_CHIRP: + if (ab->otg.gadget) { + /* TODO: Enable regulators. */ + ab8500_usb_peri_phy_en(ab); + v = ab->otg.gadget; + } + event = USB_EVENT_VBUS; + break; + + case USB_LINK_HM_IDGND: + if (ab->otg.host) { + /* TODO: Enable regulators. */ + ab8500_usb_host_phy_en(ab); + v = ab->otg.host; + } + ab->otg.state = OTG_STATE_A_IDLE; + ab->otg.default_a = true; + event = USB_EVENT_ID; + break; + + case USB_LINK_ACA_RID_A: + case USB_LINK_ACA_RID_B: + /* TODO */ + case USB_LINK_ACA_RID_C_NM: + case USB_LINK_ACA_RID_C_HS: + case USB_LINK_ACA_RID_C_HS_CHIRP: + case USB_LINK_DEDICATED_CHG: + /* TODO: vbus_draw */ + event = USB_EVENT_CHARGER; + break; + } + + blocking_notifier_call_chain(&ab->otg.notifier, event, v); + + return 0; +} + +static void ab8500_usb_delayed_work(struct work_struct *work) +{ + struct ab8500_usb *ab = container_of(work, struct ab8500_usb, + dwork.work); + + ab8500_usb_link_status_update(ab); +} + +static irqreturn_t ab8500_usb_v1x_common_irq(int irq, void *data) +{ + struct ab8500_usb *ab = (struct ab8500_usb *) data; + + /* Wait for link status to become stable. */ + schedule_delayed_work(&ab->dwork, ab->link_status_wait); + + return IRQ_HANDLED; +} + +static irqreturn_t ab8500_usb_v1x_vbus_fall_irq(int irq, void *data) +{ + struct ab8500_usb *ab = (struct ab8500_usb *) data; + + /* Link status will not be updated till phy is disabled. */ + ab8500_usb_peri_phy_dis(ab); + + /* Wait for link status to become stable. */ + schedule_delayed_work(&ab->dwork, ab->link_status_wait); + + return IRQ_HANDLED; +} + +static irqreturn_t ab8500_usb_v20_irq(int irq, void *data) +{ + struct ab8500_usb *ab = (struct ab8500_usb *) data; + + ab8500_usb_link_status_update(ab); + + return IRQ_HANDLED; +} + +static void ab8500_usb_phy_disable_work(struct work_struct *work) +{ + struct ab8500_usb *ab = container_of(work, struct ab8500_usb, + phy_dis_work); + + if (!ab->otg.host) + ab8500_usb_host_phy_dis(ab); + + if (!ab->otg.gadget) + ab8500_usb_peri_phy_dis(ab); +} + +static int ab8500_usb_set_power(struct otg_transceiver *otg, unsigned mA) +{ + struct ab8500_usb *ab; + + if (!otg) + return -ENODEV; + + ab = xceiv_to_ab(otg); + + ab->vbus_draw = mA; + + if (mA) + blocking_notifier_call_chain(&ab->otg.notifier, + USB_EVENT_ENUMERATED, ab->otg.gadget); + return 0; +} + +/* TODO: Implement some way for charging or other drivers to read + * ab->vbus_draw. + */ + +static int ab8500_usb_set_suspend(struct otg_transceiver *x, int suspend) +{ + /* TODO */ + return 0; +} + +static int ab8500_usb_set_peripheral(struct otg_transceiver *otg, + struct usb_gadget *gadget) +{ + struct ab8500_usb *ab; + + if (!otg) + return -ENODEV; + + ab = xceiv_to_ab(otg); + + /* Some drivers call this function in atomic context. + * Do not update ab8500 registers directly till this + * is fixed. + */ + + if (!gadget) { + /* TODO: Disable regulators. */ + ab->otg.gadget = NULL; + schedule_work(&ab->phy_dis_work); + } else { + ab->otg.gadget = gadget; + ab->otg.state = OTG_STATE_B_IDLE; + + /* Phy will not be enabled if cable is already + * plugged-in. Schedule to enable phy. + * Use same delay to avoid any race condition. + */ + schedule_delayed_work(&ab->dwork, ab->link_status_wait); + } + + return 0; +} + +static int ab8500_usb_set_host(struct otg_transceiver *otg, + struct usb_bus *host) +{ + struct ab8500_usb *ab; + + if (!otg) + return -ENODEV; + + ab = xceiv_to_ab(otg); + + /* Some drivers call this function in atomic context. + * Do not update ab8500 registers directly till this + * is fixed. + */ + + if (!host) { + /* TODO: Disable regulators. */ + ab->otg.host = NULL; + schedule_work(&ab->phy_dis_work); + } else { + ab->otg.host = host; + /* Phy will not be enabled if cable is already + * plugged-in. Schedule to enable phy. + * Use same delay to avoid any race condition. + */ + schedule_delayed_work(&ab->dwork, ab->link_status_wait); + } + + return 0; +} + +static void ab8500_usb_irq_free(struct ab8500_usb *ab) +{ + if (ab->rev < 0x20) { + free_irq(ab->irq_num_id_rise, ab); + free_irq(ab->irq_num_id_fall, ab); + free_irq(ab->irq_num_vbus_rise, ab); + free_irq(ab->irq_num_vbus_fall, ab); + } else { + free_irq(ab->irq_num_link_status, ab); + } +} + +static int ab8500_usb_v1x_res_setup(struct platform_device *pdev, + struct ab8500_usb *ab) +{ + int err; + + ab->irq_num_id_rise = platform_get_irq_byname(pdev, "ID_WAKEUP_R"); + if (ab->irq_num_id_rise < 0) { + dev_err(&pdev->dev, "ID rise irq not found\n"); + return ab->irq_num_id_rise; + } + err = request_threaded_irq(ab->irq_num_id_rise, NULL, + ab8500_usb_v1x_common_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-id-rise", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for ID rise irq\n"); + goto fail0; + } + + ab->irq_num_id_fall = platform_get_irq_byname(pdev, "ID_WAKEUP_F"); + if (ab->irq_num_id_fall < 0) { + dev_err(&pdev->dev, "ID fall irq not found\n"); + return ab->irq_num_id_fall; + } + err = request_threaded_irq(ab->irq_num_id_fall, NULL, + ab8500_usb_v1x_common_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-id-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for ID fall irq\n"); + goto fail1; + } + + ab->irq_num_vbus_rise = platform_get_irq_byname(pdev, "VBUS_DET_R"); + if (ab->irq_num_vbus_rise < 0) { + dev_err(&pdev->dev, "VBUS rise irq not found\n"); + return ab->irq_num_vbus_rise; + } + err = request_threaded_irq(ab->irq_num_vbus_rise, NULL, + ab8500_usb_v1x_common_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-vbus-rise", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for Vbus rise irq\n"); + goto fail2; + } + + ab->irq_num_vbus_fall = platform_get_irq_byname(pdev, "VBUS_DET_F"); + if (ab->irq_num_vbus_fall < 0) { + dev_err(&pdev->dev, "VBUS fall irq not found\n"); + return ab->irq_num_vbus_fall; + } + err = request_threaded_irq(ab->irq_num_vbus_fall, NULL, + ab8500_usb_v1x_vbus_fall_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-vbus-fall", ab); + if (err < 0) { + dev_err(ab->dev, "request_irq failed for Vbus fall irq\n"); + goto fail3; + } + + return 0; +fail3: + free_irq(ab->irq_num_vbus_rise, ab); +fail2: + free_irq(ab->irq_num_id_fall, ab); +fail1: + free_irq(ab->irq_num_id_rise, ab); +fail0: + return err; +} + +static int ab8500_usb_v2_res_setup(struct platform_device *pdev, + struct ab8500_usb *ab) +{ + int err; + + ab->irq_num_link_status = platform_get_irq_byname(pdev, + "USB_LINK_STATUS"); + if (ab->irq_num_link_status < 0) { + dev_err(&pdev->dev, "Link status irq not found\n"); + return ab->irq_num_link_status; + } + + err = request_threaded_irq(ab->irq_num_link_status, NULL, + ab8500_usb_v20_irq, + IRQF_NO_SUSPEND | IRQF_SHARED, + "usb-link-status", ab); + if (err < 0) { + dev_err(ab->dev, + "request_irq failed for link status irq\n"); + return err; + } + + return 0; +} + +static int __devinit ab8500_usb_probe(struct platform_device *pdev) +{ + struct ab8500_usb *ab; + int err; + int rev; + + rev = abx500_get_chip_id(&pdev->dev); + if (rev < 0) { + dev_err(&pdev->dev, "Chip id read failed\n"); + return rev; + } else if (rev < 0x10) { + dev_err(&pdev->dev, "Unsupported AB8500 chip\n"); + return -ENODEV; + } + + ab = kzalloc(sizeof *ab, GFP_KERNEL); + if (!ab) + return -ENOMEM; + + ab->dev = &pdev->dev; + ab->rev = rev; + ab->otg.dev = ab->dev; + ab->otg.label = "ab8500"; + ab->otg.state = OTG_STATE_UNDEFINED; + ab->otg.set_host = ab8500_usb_set_host; + ab->otg.set_peripheral = ab8500_usb_set_peripheral; + ab->otg.set_suspend = ab8500_usb_set_suspend; + ab->otg.set_power = ab8500_usb_set_power; + + platform_set_drvdata(pdev, ab); + + BLOCKING_INIT_NOTIFIER_HEAD(&ab->otg.notifier); + + /* v1: Wait for link status to become stable. + * all: Updates form set_host and set_peripheral as they are atomic. + */ + INIT_DELAYED_WORK(&ab->dwork, ab8500_usb_delayed_work); + + /* all: Disable phy when called from set_host and set_peripheral */ + INIT_WORK(&ab->phy_dis_work, ab8500_usb_phy_disable_work); + + if (ab->rev < 0x20) { + err = ab8500_usb_v1x_res_setup(pdev, ab); + ab->link_status_wait = AB8500_V1x_LINK_STAT_WAIT; + } else { + err = ab8500_usb_v2_res_setup(pdev, ab); + } + + if (err < 0) + goto fail0; + + err = otg_set_transceiver(&ab->otg); + if (err) { + dev_err(&pdev->dev, "Can't register transceiver\n"); + goto fail1; + } + + dev_info(&pdev->dev, "AB8500 usb driver initialized\n"); + + return 0; +fail1: + ab8500_usb_irq_free(ab); +fail0: + kfree(ab); + return err; +} + +static int __devexit ab8500_usb_remove(struct platform_device *pdev) +{ + struct ab8500_usb *ab = platform_get_drvdata(pdev); + + ab8500_usb_irq_free(ab); + + cancel_delayed_work_sync(&ab->dwork); + + cancel_work_sync(&ab->phy_dis_work); + + otg_set_transceiver(NULL); + + ab8500_usb_host_phy_dis(ab); + ab8500_usb_peri_phy_dis(ab); + + platform_set_drvdata(pdev, NULL); + + kfree(ab); + + return 0; +} + +static struct platform_driver ab8500_usb_driver = { + .probe = ab8500_usb_probe, + .remove = __devexit_p(ab8500_usb_remove), + .driver = { + .name = "ab8500-usb", + .owner = THIS_MODULE, + }, +}; + +static int __init ab8500_usb_init(void) +{ + return platform_driver_register(&ab8500_usb_driver); +} +subsys_initcall(ab8500_usb_init); + +static void __exit ab8500_usb_exit(void) +{ + platform_driver_unregister(&ab8500_usb_driver); +} +module_exit(ab8500_usb_exit); + +MODULE_ALIAS("platform:ab8500_usb"); +MODULE_AUTHOR("ST-Ericsson AB"); +MODULE_DESCRIPTION("AB8500 usb transceiver driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/usb/otg/msm72k_otg.c b/drivers/usb/otg/msm72k_otg.c new file mode 100644 index 000000000000..1cd52edcd0c2 --- /dev/null +++ b/drivers/usb/otg/msm72k_otg.c @@ -0,0 +1,1125 @@ +/* Copyright (c) 2009-2010, Code Aurora Forum. 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + */ + +#include <linux/module.h> +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/clk.h> +#include <linux/slab.h> +#include <linux/interrupt.h> +#include <linux/err.h> +#include <linux/delay.h> +#include <linux/io.h> +#include <linux/ioport.h> +#include <linux/uaccess.h> +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/pm_runtime.h> + +#include <linux/usb.h> +#include <linux/usb/otg.h> +#include <linux/usb/ulpi.h> +#include <linux/usb/gadget.h> +#include <linux/usb/hcd.h> +#include <linux/usb/msm_hsusb.h> +#include <linux/usb/msm_hsusb_hw.h> + +#include <mach/clk.h> + +#define MSM_USB_BASE (motg->regs) +#define DRIVER_NAME "msm_otg" + +#define ULPI_IO_TIMEOUT_USEC (10 * 1000) +static int ulpi_read(struct otg_transceiver *otg, u32 reg) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + int cnt = 0; + + /* initiate read operation */ + writel(ULPI_RUN | ULPI_READ | ULPI_ADDR(reg), + USB_ULPI_VIEWPORT); + + /* wait for completion */ + while (cnt < ULPI_IO_TIMEOUT_USEC) { + if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) + break; + udelay(1); + cnt++; + } + + if (cnt >= ULPI_IO_TIMEOUT_USEC) { + dev_err(otg->dev, "ulpi_read: timeout %08x\n", + readl(USB_ULPI_VIEWPORT)); + return -ETIMEDOUT; + } + return ULPI_DATA_READ(readl(USB_ULPI_VIEWPORT)); +} + +static int ulpi_write(struct otg_transceiver *otg, u32 val, u32 reg) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + int cnt = 0; + + /* initiate write operation */ + writel(ULPI_RUN | ULPI_WRITE | + ULPI_ADDR(reg) | ULPI_DATA(val), + USB_ULPI_VIEWPORT); + + /* wait for completion */ + while (cnt < ULPI_IO_TIMEOUT_USEC) { + if (!(readl(USB_ULPI_VIEWPORT) & ULPI_RUN)) + break; + udelay(1); + cnt++; + } + + if (cnt >= ULPI_IO_TIMEOUT_USEC) { + dev_err(otg->dev, "ulpi_write: timeout\n"); + return -ETIMEDOUT; + } + return 0; +} + +static struct otg_io_access_ops msm_otg_io_ops = { + .read = ulpi_read, + .write = ulpi_write, +}; + +static void ulpi_init(struct msm_otg *motg) +{ + struct msm_otg_platform_data *pdata = motg->pdata; + int *seq = pdata->phy_init_seq; + + if (!seq) + return; + + while (seq[0] >= 0) { + dev_vdbg(motg->otg.dev, "ulpi: write 0x%02x to 0x%02x\n", + seq[0], seq[1]); + ulpi_write(&motg->otg, seq[0], seq[1]); + seq += 2; + } +} + +static int msm_otg_link_clk_reset(struct msm_otg *motg, bool assert) +{ + int ret; + + if (assert) { + ret = clk_reset(motg->clk, CLK_RESET_ASSERT); + if (ret) + dev_err(motg->otg.dev, "usb hs_clk assert failed\n"); + } else { + ret = clk_reset(motg->clk, CLK_RESET_DEASSERT); + if (ret) + dev_err(motg->otg.dev, "usb hs_clk deassert failed\n"); + } + return ret; +} + +static int msm_otg_phy_clk_reset(struct msm_otg *motg) +{ + int ret; + + ret = clk_reset(motg->phy_reset_clk, CLK_RESET_ASSERT); + if (ret) { + dev_err(motg->otg.dev, "usb phy clk assert failed\n"); + return ret; + } + usleep_range(10000, 12000); + ret = clk_reset(motg->phy_reset_clk, CLK_RESET_DEASSERT); + if (ret) + dev_err(motg->otg.dev, "usb phy clk deassert failed\n"); + return ret; +} + +static int msm_otg_phy_reset(struct msm_otg *motg) +{ + u32 val; + int ret; + int retries; + + ret = msm_otg_link_clk_reset(motg, 1); + if (ret) + return ret; + ret = msm_otg_phy_clk_reset(motg); + if (ret) + return ret; + ret = msm_otg_link_clk_reset(motg, 0); + if (ret) + return ret; + + val = readl(USB_PORTSC) & ~PORTSC_PTS_MASK; + writel(val | PORTSC_PTS_ULPI, USB_PORTSC); + + for (retries = 3; retries > 0; retries--) { + ret = ulpi_write(&motg->otg, ULPI_FUNC_CTRL_SUSPENDM, + ULPI_CLR(ULPI_FUNC_CTRL)); + if (!ret) + break; + ret = msm_otg_phy_clk_reset(motg); + if (ret) + return ret; + } + if (!retries) + return -ETIMEDOUT; + + /* This reset calibrates the phy, if the above write succeeded */ + ret = msm_otg_phy_clk_reset(motg); + if (ret) + return ret; + + for (retries = 3; retries > 0; retries--) { + ret = ulpi_read(&motg->otg, ULPI_DEBUG); + if (ret != -ETIMEDOUT) + break; + ret = msm_otg_phy_clk_reset(motg); + if (ret) + return ret; + } + if (!retries) + return -ETIMEDOUT; + + dev_info(motg->otg.dev, "phy_reset: success\n"); + return 0; +} + +#define LINK_RESET_TIMEOUT_USEC (250 * 1000) +static int msm_otg_reset(struct otg_transceiver *otg) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + struct msm_otg_platform_data *pdata = motg->pdata; + int cnt = 0; + int ret; + u32 val = 0; + u32 ulpi_val = 0; + + ret = msm_otg_phy_reset(motg); + if (ret) { + dev_err(otg->dev, "phy_reset failed\n"); + return ret; + } + + ulpi_init(motg); + + writel(USBCMD_RESET, USB_USBCMD); + while (cnt < LINK_RESET_TIMEOUT_USEC) { + if (!(readl(USB_USBCMD) & USBCMD_RESET)) + break; + udelay(1); + cnt++; + } + if (cnt >= LINK_RESET_TIMEOUT_USEC) + return -ETIMEDOUT; + + /* select ULPI phy */ + writel(0x80000000, USB_PORTSC); + + msleep(100); + + writel(0x0, USB_AHBBURST); + writel(0x00, USB_AHBMODE); + + if (pdata->otg_control == OTG_PHY_CONTROL) { + val = readl(USB_OTGSC); + if (pdata->mode == USB_OTG) { + ulpi_val = ULPI_INT_IDGRD | ULPI_INT_SESS_VALID; + val |= OTGSC_IDIE | OTGSC_BSVIE; + } else if (pdata->mode == USB_PERIPHERAL) { + ulpi_val = ULPI_INT_SESS_VALID; + val |= OTGSC_BSVIE; + } + writel(val, USB_OTGSC); + ulpi_write(otg, ulpi_val, ULPI_USB_INT_EN_RISE); + ulpi_write(otg, ulpi_val, ULPI_USB_INT_EN_FALL); + } + + return 0; +} + +#define PHY_SUSPEND_TIMEOUT_USEC (500 * 1000) +static int msm_otg_suspend(struct msm_otg *motg) +{ + struct otg_transceiver *otg = &motg->otg; + struct usb_bus *bus = otg->host; + struct msm_otg_platform_data *pdata = motg->pdata; + int cnt = 0; + + if (atomic_read(&motg->in_lpm)) + return 0; + + disable_irq(motg->irq); + /* + * Interrupt Latch Register auto-clear feature is not present + * in all PHY versions. Latch register is clear on read type. + * Clear latch register to avoid spurious wakeup from + * low power mode (LPM). + */ + ulpi_read(otg, 0x14); + + /* + * PHY comparators are disabled when PHY enters into low power + * mode (LPM). Keep PHY comparators ON in LPM only when we expect + * VBUS/Id notifications from USB PHY. Otherwise turn off USB + * PHY comparators. This save significant amount of power. + */ + if (pdata->otg_control == OTG_PHY_CONTROL) + ulpi_write(otg, 0x01, 0x30); + + /* + * PLL is not turned off when PHY enters into low power mode (LPM). + * Disable PLL for maximum power savings. + */ + ulpi_write(otg, 0x08, 0x09); + + /* + * PHY may take some time or even fail to enter into low power + * mode (LPM). Hence poll for 500 msec and reset the PHY and link + * in failure case. + */ + writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); + while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { + if (readl(USB_PORTSC) & PORTSC_PHCD) + break; + udelay(1); + cnt++; + } + + if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) { + dev_err(otg->dev, "Unable to suspend PHY\n"); + msm_otg_reset(otg); + enable_irq(motg->irq); + return -ETIMEDOUT; + } + + /* + * PHY has capability to generate interrupt asynchronously in low + * power mode (LPM). This interrupt is level triggered. So USB IRQ + * line must be disabled till async interrupt enable bit is cleared + * in USBCMD register. Assert STP (ULPI interface STOP signal) to + * block data communication from PHY. + */ + writel(readl(USB_USBCMD) | ASYNC_INTR_CTRL | ULPI_STP_CTRL, USB_USBCMD); + + clk_disable(motg->pclk); + clk_disable(motg->clk); + if (motg->core_clk) + clk_disable(motg->core_clk); + + if (device_may_wakeup(otg->dev)) + enable_irq_wake(motg->irq); + if (bus) + clear_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); + + atomic_set(&motg->in_lpm, 1); + enable_irq(motg->irq); + + dev_info(otg->dev, "USB in low power mode\n"); + + return 0; +} + +#define PHY_RESUME_TIMEOUT_USEC (100 * 1000) +static int msm_otg_resume(struct msm_otg *motg) +{ + struct otg_transceiver *otg = &motg->otg; + struct usb_bus *bus = otg->host; + int cnt = 0; + unsigned temp; + + if (!atomic_read(&motg->in_lpm)) + return 0; + + clk_enable(motg->pclk); + clk_enable(motg->clk); + if (motg->core_clk) + clk_enable(motg->core_clk); + + temp = readl(USB_USBCMD); + temp &= ~ASYNC_INTR_CTRL; + temp &= ~ULPI_STP_CTRL; + writel(temp, USB_USBCMD); + + /* + * PHY comes out of low power mode (LPM) in case of wakeup + * from asynchronous interrupt. + */ + if (!(readl(USB_PORTSC) & PORTSC_PHCD)) + goto skip_phy_resume; + + writel(readl(USB_PORTSC) & ~PORTSC_PHCD, USB_PORTSC); + while (cnt < PHY_RESUME_TIMEOUT_USEC) { + if (!(readl(USB_PORTSC) & PORTSC_PHCD)) + break; + udelay(1); + cnt++; + } + + if (cnt >= PHY_RESUME_TIMEOUT_USEC) { + /* + * This is a fatal error. Reset the link and + * PHY. USB state can not be restored. Re-insertion + * of USB cable is the only way to get USB working. + */ + dev_err(otg->dev, "Unable to resume USB." + "Re-plugin the cable\n"); + msm_otg_reset(otg); + } + +skip_phy_resume: + if (device_may_wakeup(otg->dev)) + disable_irq_wake(motg->irq); + if (bus) + set_bit(HCD_FLAG_HW_ACCESSIBLE, &(bus_to_hcd(bus))->flags); + + if (motg->async_int) { + motg->async_int = 0; + pm_runtime_put(otg->dev); + enable_irq(motg->irq); + } + + atomic_set(&motg->in_lpm, 0); + + dev_info(otg->dev, "USB exited from low power mode\n"); + + return 0; +} + +static void msm_otg_start_host(struct otg_transceiver *otg, int on) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + struct msm_otg_platform_data *pdata = motg->pdata; + struct usb_hcd *hcd; + + if (!otg->host) + return; + + hcd = bus_to_hcd(otg->host); + + if (on) { + dev_dbg(otg->dev, "host on\n"); + + if (pdata->vbus_power) + pdata->vbus_power(1); + /* + * Some boards have a switch cotrolled by gpio + * to enable/disable internal HUB. Enable internal + * HUB before kicking the host. + */ + if (pdata->setup_gpio) + pdata->setup_gpio(OTG_STATE_A_HOST); +#ifdef CONFIG_USB + usb_add_hcd(hcd, hcd->irq, IRQF_SHARED); +#endif + } else { + dev_dbg(otg->dev, "host off\n"); + +#ifdef CONFIG_USB + usb_remove_hcd(hcd); +#endif + if (pdata->setup_gpio) + pdata->setup_gpio(OTG_STATE_UNDEFINED); + if (pdata->vbus_power) + pdata->vbus_power(0); + } +} + +static int msm_otg_set_host(struct otg_transceiver *otg, struct usb_bus *host) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + struct usb_hcd *hcd; + + /* + * Fail host registration if this board can support + * only peripheral configuration. + */ + if (motg->pdata->mode == USB_PERIPHERAL) { + dev_info(otg->dev, "Host mode is not supported\n"); + return -ENODEV; + } + + if (!host) { + if (otg->state == OTG_STATE_A_HOST) { + pm_runtime_get_sync(otg->dev); + msm_otg_start_host(otg, 0); + otg->host = NULL; + otg->state = OTG_STATE_UNDEFINED; + schedule_work(&motg->sm_work); + } else { + otg->host = NULL; + } + + return 0; + } + + hcd = bus_to_hcd(host); + hcd->power_budget = motg->pdata->power_budget; + + otg->host = host; + dev_dbg(otg->dev, "host driver registered w/ tranceiver\n"); + + /* + * Kick the state machine work, if peripheral is not supported + * or peripheral is already registered with us. + */ + if (motg->pdata->mode == USB_HOST || otg->gadget) { + pm_runtime_get_sync(otg->dev); + schedule_work(&motg->sm_work); + } + + return 0; +} + +static void msm_otg_start_peripheral(struct otg_transceiver *otg, int on) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + struct msm_otg_platform_data *pdata = motg->pdata; + + if (!otg->gadget) + return; + + if (on) { + dev_dbg(otg->dev, "gadget on\n"); + /* + * Some boards have a switch cotrolled by gpio + * to enable/disable internal HUB. Disable internal + * HUB before kicking the gadget. + */ + if (pdata->setup_gpio) + pdata->setup_gpio(OTG_STATE_B_PERIPHERAL); + usb_gadget_vbus_connect(otg->gadget); + } else { + dev_dbg(otg->dev, "gadget off\n"); + usb_gadget_vbus_disconnect(otg->gadget); + if (pdata->setup_gpio) + pdata->setup_gpio(OTG_STATE_UNDEFINED); + } + +} + +static int msm_otg_set_peripheral(struct otg_transceiver *otg, + struct usb_gadget *gadget) +{ + struct msm_otg *motg = container_of(otg, struct msm_otg, otg); + + /* + * Fail peripheral registration if this board can support + * only host configuration. + */ + if (motg->pdata->mode == USB_HOST) { + dev_info(otg->dev, "Peripheral mode is not supported\n"); + return -ENODEV; + } + + if (!gadget) { + if (otg->state == OTG_STATE_B_PERIPHERAL) { + pm_runtime_get_sync(otg->dev); + msm_otg_start_peripheral(otg, 0); + otg->gadget = NULL; + otg->state = OTG_STATE_UNDEFINED; + schedule_work(&motg->sm_work); + } else { + otg->gadget = NULL; + } + + return 0; + } + otg->gadget = gadget; + dev_dbg(otg->dev, "peripheral driver registered w/ tranceiver\n"); + + /* + * Kick the state machine work, if host is not supported + * or host is already registered with us. + */ + if (motg->pdata->mode == USB_PERIPHERAL || otg->host) { + pm_runtime_get_sync(otg->dev); + schedule_work(&motg->sm_work); + } + + return 0; +} + +/* + * We support OTG, Peripheral only and Host only configurations. In case + * of OTG, mode switch (host-->peripheral/peripheral-->host) can happen + * via Id pin status or user request (debugfs). Id/BSV interrupts are not + * enabled when switch is controlled by user and default mode is supplied + * by board file, which can be changed by userspace later. + */ +static void msm_otg_init_sm(struct msm_otg *motg) +{ + struct msm_otg_platform_data *pdata = motg->pdata; + u32 otgsc = readl(USB_OTGSC); + + switch (pdata->mode) { + case USB_OTG: + if (pdata->otg_control == OTG_PHY_CONTROL) { + if (otgsc & OTGSC_ID) + set_bit(ID, &motg->inputs); + else + clear_bit(ID, &motg->inputs); + + if (otgsc & OTGSC_BSV) + set_bit(B_SESS_VLD, &motg->inputs); + else + clear_bit(B_SESS_VLD, &motg->inputs); + } else if (pdata->otg_control == OTG_USER_CONTROL) { + if (pdata->default_mode == USB_HOST) { + clear_bit(ID, &motg->inputs); + } else if (pdata->default_mode == USB_PERIPHERAL) { + set_bit(ID, &motg->inputs); + set_bit(B_SESS_VLD, &motg->inputs); + } else { + set_bit(ID, &motg->inputs); + clear_bit(B_SESS_VLD, &motg->inputs); + } + } + break; + case USB_HOST: + clear_bit(ID, &motg->inputs); + break; + case USB_PERIPHERAL: + set_bit(ID, &motg->inputs); + if (otgsc & OTGSC_BSV) + set_bit(B_SESS_VLD, &motg->inputs); + else + clear_bit(B_SESS_VLD, &motg->inputs); + break; + default: + break; + } +} + +static void msm_otg_sm_work(struct work_struct *w) +{ + struct msm_otg *motg = container_of(w, struct msm_otg, sm_work); + struct otg_transceiver *otg = &motg->otg; + + switch (otg->state) { + case OTG_STATE_UNDEFINED: + dev_dbg(otg->dev, "OTG_STATE_UNDEFINED state\n"); + msm_otg_reset(otg); + msm_otg_init_sm(motg); + otg->state = OTG_STATE_B_IDLE; + /* FALL THROUGH */ + case OTG_STATE_B_IDLE: + dev_dbg(otg->dev, "OTG_STATE_B_IDLE state\n"); + if (!test_bit(ID, &motg->inputs) && otg->host) { + /* disable BSV bit */ + writel(readl(USB_OTGSC) & ~OTGSC_BSVIE, USB_OTGSC); + msm_otg_start_host(otg, 1); + otg->state = OTG_STATE_A_HOST; + } else if (test_bit(B_SESS_VLD, &motg->inputs) && otg->gadget) { + msm_otg_start_peripheral(otg, 1); + otg->state = OTG_STATE_B_PERIPHERAL; + } + pm_runtime_put_sync(otg->dev); + break; + case OTG_STATE_B_PERIPHERAL: + dev_dbg(otg->dev, "OTG_STATE_B_PERIPHERAL state\n"); + if (!test_bit(B_SESS_VLD, &motg->inputs) || + !test_bit(ID, &motg->inputs)) { + msm_otg_start_peripheral(otg, 0); + otg->state = OTG_STATE_B_IDLE; + msm_otg_reset(otg); + schedule_work(w); + } + break; + case OTG_STATE_A_HOST: + dev_dbg(otg->dev, "OTG_STATE_A_HOST state\n"); + if (test_bit(ID, &motg->inputs)) { + msm_otg_start_host(otg, 0); + otg->state = OTG_STATE_B_IDLE; + msm_otg_reset(otg); + schedule_work(w); + } + break; + default: + break; + } +} + +static irqreturn_t msm_otg_irq(int irq, void *data) +{ + struct msm_otg *motg = data; + struct otg_transceiver *otg = &motg->otg; + u32 otgsc = 0; + + if (atomic_read(&motg->in_lpm)) { + disable_irq_nosync(irq); + motg->async_int = 1; + pm_runtime_get(otg->dev); + return IRQ_HANDLED; + } + + otgsc = readl(USB_OTGSC); + if (!(otgsc & (OTGSC_IDIS | OTGSC_BSVIS))) + return IRQ_NONE; + + if ((otgsc & OTGSC_IDIS) && (otgsc & OTGSC_IDIE)) { + if (otgsc & OTGSC_ID) + set_bit(ID, &motg->inputs); + else + clear_bit(ID, &motg->inputs); + dev_dbg(otg->dev, "ID set/clear\n"); + pm_runtime_get_noresume(otg->dev); + } else if ((otgsc & OTGSC_BSVIS) && (otgsc & OTGSC_BSVIE)) { + if (otgsc & OTGSC_BSV) + set_bit(B_SESS_VLD, &motg->inputs); + else + clear_bit(B_SESS_VLD, &motg->inputs); + dev_dbg(otg->dev, "BSV set/clear\n"); + pm_runtime_get_noresume(otg->dev); + } + + writel(otgsc, USB_OTGSC); + schedule_work(&motg->sm_work); + return IRQ_HANDLED; +} + +static int msm_otg_mode_show(struct seq_file *s, void *unused) +{ + struct msm_otg *motg = s->private; + struct otg_transceiver *otg = &motg->otg; + + switch (otg->state) { + case OTG_STATE_A_HOST: + seq_printf(s, "host\n"); + break; + case OTG_STATE_B_PERIPHERAL: + seq_printf(s, "peripheral\n"); + break; + default: + seq_printf(s, "none\n"); + break; + } + + return 0; +} + +static int msm_otg_mode_open(struct inode *inode, struct file *file) +{ + return single_open(file, msm_otg_mode_show, inode->i_private); +} + +static ssize_t msm_otg_mode_write(struct file *file, const char __user *ubuf, + size_t count, loff_t *ppos) +{ + struct msm_otg *motg = file->private_data; + char buf[16]; + struct otg_transceiver *otg = &motg->otg; + int status = count; + enum usb_mode_type req_mode; + + memset(buf, 0x00, sizeof(buf)); + + if (copy_from_user(&buf, ubuf, min_t(size_t, sizeof(buf) - 1, count))) { + status = -EFAULT; + goto out; + } + + if (!strncmp(buf, "host", 4)) { + req_mode = USB_HOST; + } else if (!strncmp(buf, "peripheral", 10)) { + req_mode = USB_PERIPHERAL; + } else if (!strncmp(buf, "none", 4)) { + req_mode = USB_NONE; + } else { + status = -EINVAL; + goto out; + } + + switch (req_mode) { + case USB_NONE: + switch (otg->state) { + case OTG_STATE_A_HOST: + case OTG_STATE_B_PERIPHERAL: + set_bit(ID, &motg->inputs); + clear_bit(B_SESS_VLD, &motg->inputs); + break; + default: + goto out; + } + break; + case USB_PERIPHERAL: + switch (otg->state) { + case OTG_STATE_B_IDLE: + case OTG_STATE_A_HOST: + set_bit(ID, &motg->inputs); + set_bit(B_SESS_VLD, &motg->inputs); + break; + default: + goto out; + } + break; + case USB_HOST: + switch (otg->state) { + case OTG_STATE_B_IDLE: + case OTG_STATE_B_PERIPHERAL: + clear_bit(ID, &motg->inputs); + break; + default: + goto out; + } + break; + default: + goto out; + } + + pm_runtime_get_sync(otg->dev); + schedule_work(&motg->sm_work); +out: + return status; +} + +const struct file_operations msm_otg_mode_fops = { + .open = msm_otg_mode_open, + .read = seq_read, + .write = msm_otg_mode_write, + .llseek = seq_lseek, + .release = single_release, +}; + +static struct dentry *msm_otg_dbg_root; +static struct dentry *msm_otg_dbg_mode; + +static int msm_otg_debugfs_init(struct msm_otg *motg) +{ + msm_otg_dbg_root = debugfs_create_dir("msm_otg", NULL); + + if (!msm_otg_dbg_root || IS_ERR(msm_otg_dbg_root)) + return -ENODEV; + + msm_otg_dbg_mode = debugfs_create_file("mode", S_IRUGO | S_IWUSR, + msm_otg_dbg_root, motg, &msm_otg_mode_fops); + if (!msm_otg_dbg_mode) { + debugfs_remove(msm_otg_dbg_root); + msm_otg_dbg_root = NULL; + return -ENODEV; + } + + return 0; +} + +static void msm_otg_debugfs_cleanup(void) +{ + debugfs_remove(msm_otg_dbg_mode); + debugfs_remove(msm_otg_dbg_root); +} + +static int __init msm_otg_probe(struct platform_device *pdev) +{ + int ret = 0; + struct resource *res; + struct msm_otg *motg; + struct otg_transceiver *otg; + + dev_info(&pdev->dev, "msm_otg probe\n"); + if (!pdev->dev.platform_data) { + dev_err(&pdev->dev, "No platform data given. Bailing out\n"); + return -ENODEV; + } + + motg = kzalloc(sizeof(struct msm_otg), GFP_KERNEL); + if (!motg) { + dev_err(&pdev->dev, "unable to allocate msm_otg\n"); + return -ENOMEM; + } + + motg->pdata = pdev->dev.platform_data; + otg = &motg->otg; + otg->dev = &pdev->dev; + + motg->phy_reset_clk = clk_get(&pdev->dev, "usb_phy_clk"); + if (IS_ERR(motg->phy_reset_clk)) { + dev_err(&pdev->dev, "failed to get usb_phy_clk\n"); + ret = PTR_ERR(motg->phy_reset_clk); + goto free_motg; + } + + motg->clk = clk_get(&pdev->dev, "usb_hs_clk"); + if (IS_ERR(motg->clk)) { + dev_err(&pdev->dev, "failed to get usb_hs_clk\n"); + ret = PTR_ERR(motg->clk); + goto put_phy_reset_clk; + } + + motg->pclk = clk_get(&pdev->dev, "usb_hs_pclk"); + if (IS_ERR(motg->pclk)) { + dev_err(&pdev->dev, "failed to get usb_hs_pclk\n"); + ret = PTR_ERR(motg->pclk); + goto put_clk; + } + + /* + * USB core clock is not present on all MSM chips. This + * clock is introduced to remove the dependency on AXI + * bus frequency. + */ + motg->core_clk = clk_get(&pdev->dev, "usb_hs_core_clk"); + if (IS_ERR(motg->core_clk)) + motg->core_clk = NULL; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + dev_err(&pdev->dev, "failed to get platform resource mem\n"); + ret = -ENODEV; + goto put_core_clk; + } + + motg->regs = ioremap(res->start, resource_size(res)); + if (!motg->regs) { + dev_err(&pdev->dev, "ioremap failed\n"); + ret = -ENOMEM; + goto put_core_clk; + } + dev_info(&pdev->dev, "OTG regs = %p\n", motg->regs); + + motg->irq = platform_get_irq(pdev, 0); + if (!motg->irq) { + dev_err(&pdev->dev, "platform_get_irq failed\n"); + ret = -ENODEV; + goto free_regs; + } + + clk_enable(motg->clk); + clk_enable(motg->pclk); + if (motg->core_clk) + clk_enable(motg->core_clk); + + writel(0, USB_USBINTR); + writel(0, USB_OTGSC); + + INIT_WORK(&motg->sm_work, msm_otg_sm_work); + ret = request_irq(motg->irq, msm_otg_irq, IRQF_SHARED, + "msm_otg", motg); + if (ret) { + dev_err(&pdev->dev, "request irq failed\n"); + goto disable_clks; + } + + otg->init = msm_otg_reset; + otg->set_host = msm_otg_set_host; + otg->set_peripheral = msm_otg_set_peripheral; + + otg->io_ops = &msm_otg_io_ops; + + ret = otg_set_transceiver(&motg->otg); + if (ret) { + dev_err(&pdev->dev, "otg_set_transceiver failed\n"); + goto free_irq; + } + + platform_set_drvdata(pdev, motg); + device_init_wakeup(&pdev->dev, 1); + + if (motg->pdata->mode == USB_OTG && + motg->pdata->otg_control == OTG_USER_CONTROL) { + ret = msm_otg_debugfs_init(motg); + if (ret) + dev_dbg(&pdev->dev, "mode debugfs file is" + "not available\n"); + } + + pm_runtime_set_active(&pdev->dev); + pm_runtime_enable(&pdev->dev); + + return 0; +free_irq: + free_irq(motg->irq, motg); +disable_clks: + clk_disable(motg->pclk); + clk_disable(motg->clk); +free_regs: + iounmap(motg->regs); +put_core_clk: + if (motg->core_clk) + clk_put(motg->core_clk); + clk_put(motg->pclk); +put_clk: + clk_put(motg->clk); +put_phy_reset_clk: + clk_put(motg->phy_reset_clk); +free_motg: + kfree(motg); + return ret; +} + +static int __devexit msm_otg_remove(struct platform_device *pdev) +{ + struct msm_otg *motg = platform_get_drvdata(pdev); + struct otg_transceiver *otg = &motg->otg; + int cnt = 0; + + if (otg->host || otg->gadget) + return -EBUSY; + + msm_otg_debugfs_cleanup(); + cancel_work_sync(&motg->sm_work); + + msm_otg_resume(motg); + + device_init_wakeup(&pdev->dev, 0); + pm_runtime_disable(&pdev->dev); + + otg_set_transceiver(NULL); + free_irq(motg->irq, motg); + + /* + * Put PHY in low power mode. + */ + ulpi_read(otg, 0x14); + ulpi_write(otg, 0x08, 0x09); + + writel(readl(USB_PORTSC) | PORTSC_PHCD, USB_PORTSC); + while (cnt < PHY_SUSPEND_TIMEOUT_USEC) { + if (readl(USB_PORTSC) & PORTSC_PHCD) + break; + udelay(1); + cnt++; + } + if (cnt >= PHY_SUSPEND_TIMEOUT_USEC) + dev_err(otg->dev, "Unable to suspend PHY\n"); + + clk_disable(motg->pclk); + clk_disable(motg->clk); + if (motg->core_clk) + clk_disable(motg->core_clk); + + iounmap(motg->regs); + pm_runtime_set_suspended(&pdev->dev); + + clk_put(motg->phy_reset_clk); + clk_put(motg->pclk); + clk_put(motg->clk); + if (motg->core_clk) + clk_put(motg->core_clk); + + kfree(motg); + + return 0; +} + +#ifdef CONFIG_PM_RUNTIME +static int msm_otg_runtime_idle(struct device *dev) +{ + struct msm_otg *motg = dev_get_drvdata(dev); + struct otg_transceiver *otg = &motg->otg; + + dev_dbg(dev, "OTG runtime idle\n"); + + /* + * It is observed some times that a spurious interrupt + * comes when PHY is put into LPM immediately after PHY reset. + * This 1 sec delay also prevents entering into LPM immediately + * after asynchronous interrupt. + */ + if (otg->state != OTG_STATE_UNDEFINED) + pm_schedule_suspend(dev, 1000); + + return -EAGAIN; +} + +static int msm_otg_runtime_suspend(struct device *dev) +{ + struct msm_otg *motg = dev_get_drvdata(dev); + + dev_dbg(dev, "OTG runtime suspend\n"); + return msm_otg_suspend(motg); +} + +static int msm_otg_runtime_resume(struct device *dev) +{ + struct msm_otg *motg = dev_get_drvdata(dev); + + dev_dbg(dev, "OTG runtime resume\n"); + return msm_otg_resume(motg); +} +#else +#define msm_otg_runtime_idle NULL +#define msm_otg_runtime_suspend NULL +#define msm_otg_runtime_resume NULL +#endif + +#ifdef CONFIG_PM +static int msm_otg_pm_suspend(struct device *dev) +{ + struct msm_otg *motg = dev_get_drvdata(dev); + + dev_dbg(dev, "OTG PM suspend\n"); + return msm_otg_suspend(motg); +} + +static int msm_otg_pm_resume(struct device *dev) +{ + struct msm_otg *motg = dev_get_drvdata(dev); + int ret; + + dev_dbg(dev, "OTG PM resume\n"); + + ret = msm_otg_resume(motg); + if (ret) + return ret; + + /* + * Runtime PM Documentation recommends bringing the + * device to full powered state upon resume. + */ + pm_runtime_disable(dev); + pm_runtime_set_active(dev); + pm_runtime_enable(dev); + + return 0; +} +#else +#define msm_otg_pm_suspend NULL +#define msm_otg_pm_resume NULL +#endif + +static const struct dev_pm_ops msm_otg_dev_pm_ops = { + .runtime_suspend = msm_otg_runtime_suspend, + .runtime_resume = msm_otg_runtime_resume, + .runtime_idle = msm_otg_runtime_idle, + .suspend = msm_otg_pm_suspend, + .resume = msm_otg_pm_resume, +}; + +static struct platform_driver msm_otg_driver = { + .remove = __devexit_p(msm_otg_remove), + .driver = { + .name = DRIVER_NAME, + .owner = THIS_MODULE, + .pm = &msm_otg_dev_pm_ops, + }, +}; + +static int __init msm_otg_init(void) +{ + return platform_driver_probe(&msm_otg_driver, msm_otg_probe); +} + +static void __exit msm_otg_exit(void) +{ + platform_driver_unregister(&msm_otg_driver); +} + +module_init(msm_otg_init); +module_exit(msm_otg_exit); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("MSM USB transceiver driver"); diff --git a/drivers/usb/serial/usb_wwan.c b/drivers/usb/serial/usb_wwan.c index 660b7caef784..b004b2a485c3 100644 --- a/drivers/usb/serial/usb_wwan.c +++ b/drivers/usb/serial/usb_wwan.c @@ -31,6 +31,7 @@ #include <linux/tty_flip.h> #include <linux/module.h> #include <linux/bitops.h> +#include <linux/uaccess.h> #include <linux/usb.h> #include <linux/usb/serial.h> #include <linux/serial.h> |