diff options
Diffstat (limited to 'drivers/usb/gadget')
30 files changed, 108 insertions, 1966 deletions
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig index 8e9368330b10..1e3f52574367 100644 --- a/drivers/usb/gadget/Kconfig +++ b/drivers/usb/gadget/Kconfig @@ -144,7 +144,6 @@ config USB_AT91 config USB_LPC32XX tristate "LPC32XX USB Peripheral Controller" depends on ARCH_LPC32XX - depends on USB_PHY select USB_ISP1301 help This option selects the USB device controller in the LPC32xx SoC. @@ -206,7 +205,6 @@ config USB_FOTG210_UDC config USB_OMAP tristate "OMAP USB Device Controller" depends on ARCH_OMAP1 - depends on USB_PHY select ISP1301_OMAP if MACH_OMAP_H2 || MACH_OMAP_H3 || MACH_OMAP_H4_OTG help Many Texas Instruments OMAP processors have flexible full @@ -287,21 +285,6 @@ config USB_S3C_HSOTG The Samsung S3C64XX USB2.0 high-speed gadget controller integrated into the S3C64XX series SoC. -config USB_IMX - tristate "Freescale i.MX1 USB Peripheral Controller" - depends on ARCH_MXC - depends on BROKEN - help - Freescale's i.MX1 includes an integrated full speed - USB 1.1 device controller. - - It has Six fixed-function endpoints, as well as endpoint - zero (for control transfers). - - Say "y" to link the driver statically, or "m" to build a - dynamically linked module called "imx_udc" and force all - gadget drivers to also be dynamically linked. - config USB_S3C2410 tristate "S3C2410 USB Device Controller" depends on ARCH_S3C24XX diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile index bad08e66f369..386db9daf1d9 100644 --- a/drivers/usb/gadget/Makefile +++ b/drivers/usb/gadget/Makefile @@ -13,7 +13,6 @@ obj-$(CONFIG_USB_NET2280) += net2280.o obj-$(CONFIG_USB_AMD5536UDC) += amd5536udc.o obj-$(CONFIG_USB_PXA25X) += pxa25x_udc.o obj-$(CONFIG_USB_PXA27X) += pxa27x_udc.o -obj-$(CONFIG_USB_IMX) += imx_udc.o obj-$(CONFIG_USB_GOKU) += goku_udc.o obj-$(CONFIG_USB_OMAP) += omap_udc.o obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o diff --git a/drivers/usb/gadget/amd5536udc.c b/drivers/usb/gadget/amd5536udc.c index f52dcfe8f545..a9a4346c83aa 100644 --- a/drivers/usb/gadget/amd5536udc.c +++ b/drivers/usb/gadget/amd5536udc.c @@ -1122,7 +1122,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) goto finished; } if (ep->dma) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; /* write desc pointer to enable DMA */ @@ -1190,7 +1190,7 @@ udc_queue(struct usb_ep *usbep, struct usb_request *usbreq, gfp_t gfp) * for PPB modes, because of chain creation reasons */ if (ep->in) { - retval = prep_dma(ep, req, gfp); + retval = prep_dma(ep, req, GFP_ATOMIC); if (retval != 0) goto finished; } diff --git a/drivers/usb/gadget/at91_udc.c b/drivers/usb/gadget/at91_udc.c index d9a6add0c852..4cc4fd6d1473 100644 --- a/drivers/usb/gadget/at91_udc.c +++ b/drivers/usb/gadget/at91_udc.c @@ -870,6 +870,11 @@ static void clk_on(struct at91_udc *udc) if (udc->clocked) return; udc->clocked = 1; + + if (IS_ENABLED(CONFIG_COMMON_CLK)) { + clk_set_rate(udc->uclk, 48000000); + clk_prepare_enable(udc->uclk); + } clk_prepare_enable(udc->iclk); clk_prepare_enable(udc->fclk); } @@ -882,6 +887,8 @@ static void clk_off(struct at91_udc *udc) udc->gadget.speed = USB_SPEED_UNKNOWN; clk_disable_unprepare(udc->fclk); clk_disable_unprepare(udc->iclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_disable_unprepare(udc->uclk); } /* @@ -1697,7 +1704,7 @@ static int at91udc_probe(struct platform_device *pdev) int retval; struct resource *res; - if (!dev->platform_data && !pdev->dev.of_node) { + if (!dev_get_platdata(dev) && !pdev->dev.of_node) { /* small (so we copy it) but critical! */ DBG("missing platform_data\n"); return -ENODEV; @@ -1728,7 +1735,7 @@ static int at91udc_probe(struct platform_device *pdev) if (IS_ENABLED(CONFIG_OF) && pdev->dev.of_node) at91udc_of_init(udc, pdev->dev.of_node); else - memcpy(&udc->board, dev->platform_data, + memcpy(&udc->board, dev_get_platdata(dev), sizeof(struct at91_udc_data)); udc->pdev = pdev; udc->enabled = 0; @@ -1774,10 +1781,12 @@ static int at91udc_probe(struct platform_device *pdev) /* get interface and function clocks */ udc->iclk = clk_get(dev, "udc_clk"); udc->fclk = clk_get(dev, "udpck"); - if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk)) { + if (IS_ENABLED(CONFIG_COMMON_CLK)) + udc->uclk = clk_get(dev, "usb_clk"); + if (IS_ERR(udc->iclk) || IS_ERR(udc->fclk) || + (IS_ENABLED(CONFIG_COMMON_CLK) && IS_ERR(udc->uclk))) { DBG("clocks missing\n"); retval = -ENODEV; - /* NOTE: we "know" here that refcounts on these are NOPs */ goto fail1; } @@ -1851,6 +1860,12 @@ fail3: fail2: free_irq(udc->udp_irq, udc); fail1: + if (IS_ENABLED(CONFIG_COMMON_CLK) && !IS_ERR(udc->uclk)) + clk_put(udc->uclk); + if (!IS_ERR(udc->fclk)) + clk_put(udc->fclk); + if (!IS_ERR(udc->iclk)) + clk_put(udc->iclk); iounmap(udc->udp_baseaddr); fail0a: if (cpu_is_at91rm9200()) @@ -1894,6 +1909,8 @@ static int __exit at91udc_remove(struct platform_device *pdev) clk_put(udc->iclk); clk_put(udc->fclk); + if (IS_ENABLED(CONFIG_COMMON_CLK)) + clk_put(udc->uclk); return 0; } diff --git a/drivers/usb/gadget/at91_udc.h b/drivers/usb/gadget/at91_udc.h index e647d1c2ada4..017524663381 100644 --- a/drivers/usb/gadget/at91_udc.h +++ b/drivers/usb/gadget/at91_udc.h @@ -126,7 +126,7 @@ struct at91_udc { unsigned active_suspend:1; u8 addr; struct at91_udc_data board; - struct clk *iclk, *fclk; + struct clk *iclk, *fclk, *uclk; struct platform_device *pdev; struct proc_dir_entry *pde; void __iomem *udp_baseaddr; diff --git a/drivers/usb/gadget/atmel_usba_udc.c b/drivers/usb/gadget/atmel_usba_udc.c index 1d9722203ca6..40d23384b716 100644 --- a/drivers/usb/gadget/atmel_usba_udc.c +++ b/drivers/usb/gadget/atmel_usba_udc.c @@ -1772,6 +1772,7 @@ out: static int atmel_usba_start(struct usb_gadget *gadget, struct usb_gadget_driver *driver) { + int ret = 0; struct usba_udc *udc = container_of(gadget, struct usba_udc, gadget); unsigned long flags; @@ -1781,8 +1782,14 @@ static int atmel_usba_start(struct usb_gadget *gadget, udc->driver = driver; spin_unlock_irqrestore(&udc->lock, flags); - clk_enable(udc->pclk); - clk_enable(udc->hclk); + ret = clk_prepare_enable(udc->pclk); + if (ret) + goto out; + ret = clk_prepare_enable(udc->hclk); + if (ret) { + clk_disable_unprepare(udc->pclk); + goto out; + } DBG(DBG_GADGET, "registered driver `%s'\n", driver->driver.name); @@ -1797,9 +1804,11 @@ static int atmel_usba_start(struct usb_gadget *gadget, usba_writel(udc, CTRL, USBA_ENABLE_MASK); usba_writel(udc, INT_ENB, USBA_END_OF_RESET); } + +out: spin_unlock_irqrestore(&udc->lock, flags); - return 0; + return ret; } static int atmel_usba_stop(struct usb_gadget *gadget, @@ -1822,8 +1831,8 @@ static int atmel_usba_stop(struct usb_gadget *gadget, udc->driver = NULL; - clk_disable(udc->hclk); - clk_disable(udc->pclk); + clk_disable_unprepare(udc->hclk); + clk_disable_unprepare(udc->pclk); DBG(DBG_GADGET, "unregistered driver `%s'\n", driver->driver.name); @@ -1922,7 +1931,7 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev, static struct usba_ep * usba_udc_pdata(struct platform_device *pdev, struct usba_udc *udc) { - struct usba_platform_data *pdata = pdev->dev.platform_data; + struct usba_platform_data *pdata = dev_get_platdata(&pdev->dev); struct usba_ep *eps; int i; @@ -2022,10 +2031,14 @@ static int __init usba_udc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, udc); /* Make sure we start from a clean slate */ - clk_enable(pclk); + ret = clk_prepare_enable(pclk); + if (ret) { + dev_err(&pdev->dev, "Unable to enable pclk, aborting.\n"); + goto err_clk_enable; + } toggle_bias(0); usba_writel(udc, CTRL, USBA_DISABLE_MASK); - clk_disable(pclk); + clk_disable_unprepare(pclk); if (pdev->dev.of_node) udc->usba_ep = atmel_udc_of_init(pdev, udc); @@ -2081,6 +2094,7 @@ err_add_udc: free_irq(irq, udc); err_request_irq: err_alloc_ep: +err_clk_enable: iounmap(udc->fifo); err_map_fifo: iounmap(udc->regs); diff --git a/drivers/usb/gadget/bcm63xx_udc.c b/drivers/usb/gadget/bcm63xx_udc.c index fd24cb4540a4..c58fcf1ebe41 100644 --- a/drivers/usb/gadget/bcm63xx_udc.c +++ b/drivers/usb/gadget/bcm63xx_udc.c @@ -2313,7 +2313,7 @@ static void bcm63xx_udc_cleanup_debugfs(struct bcm63xx_udc *udc) static int bcm63xx_udc_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; - struct bcm63xx_usbd_platform_data *pd = dev->platform_data; + struct bcm63xx_usbd_platform_data *pd = dev_get_platdata(dev); struct bcm63xx_udc *udc; struct resource *res; int rc = -ENOMEM, i, irq; diff --git a/drivers/usb/gadget/f_mass_storage.c b/drivers/usb/gadget/f_mass_storage.c index 56f1fd1cba25..4d4e96a5d2e9 100644 --- a/drivers/usb/gadget/f_mass_storage.c +++ b/drivers/usb/gadget/f_mass_storage.c @@ -3043,12 +3043,12 @@ fsg_config_from_params(struct fsg_config *cfg, lun->filename = params->file_count > i && params->file[i][0] ? params->file[i] - : 0; + : NULL; } /* Let MSF use defaults */ - cfg->vendor_name = 0; - cfg->product_name = 0; + cfg->vendor_name = NULL; + cfg->product_name = NULL; cfg->ops = NULL; cfg->private_data = NULL; diff --git a/drivers/usb/gadget/f_uac1.c b/drivers/usb/gadget/f_uac1.c index fa8ea4ea00c1..2b4c82d84bfc 100644 --- a/drivers/usb/gadget/f_uac1.c +++ b/drivers/usb/gadget/f_uac1.c @@ -695,7 +695,7 @@ static int generic_get_cmd(struct usb_audio_control *con, u8 cmd) } /* Todo: add more control selecotor dynamically */ -int __init control_selector_init(struct f_audio *audio) +static int __init control_selector_init(struct f_audio *audio) { INIT_LIST_HEAD(&audio->cs); list_add(&feature_unit.list, &audio->cs); @@ -719,7 +719,7 @@ int __init control_selector_init(struct f_audio *audio) * * Returns zero on success, else negative errno. */ -int __init audio_bind_config(struct usb_configuration *c) +static int __init audio_bind_config(struct usb_configuration *c) { struct f_audio *audio; int status; diff --git a/drivers/usb/gadget/fsl_mxc_udc.c b/drivers/usb/gadget/fsl_mxc_udc.c index d3bd7b095ba3..9b140fc4d3bc 100644 --- a/drivers/usb/gadget/fsl_mxc_udc.c +++ b/drivers/usb/gadget/fsl_mxc_udc.c @@ -33,7 +33,7 @@ int fsl_udc_clk_init(struct platform_device *pdev) unsigned long freq; int ret; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); mxc_ipg_clk = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(mxc_ipg_clk)) { @@ -80,7 +80,7 @@ eclkrate: int fsl_udc_clk_finalize(struct platform_device *pdev) { - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); int ret = 0; /* workaround ENGcm09152 for i.MX35 */ diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c index a766a4ca1cb7..36ac7cfba91d 100644 --- a/drivers/usb/gadget/fsl_udc_core.c +++ b/drivers/usb/gadget/fsl_udc_core.c @@ -2248,7 +2248,7 @@ static int __init struct_udc_setup(struct fsl_udc *udc, struct fsl_usb2_platform_data *pdata; size_t size; - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc->phy_mode = pdata->phy_mode; udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL); @@ -2343,7 +2343,7 @@ static int __init fsl_udc_probe(struct platform_device *pdev) return -ENOMEM; } - pdata = pdev->dev.platform_data; + pdata = dev_get_platdata(&pdev->dev); udc_controller->pdata = pdata; spin_lock_init(&udc_controller->lock); udc_controller->stopped = 1; @@ -2524,7 +2524,7 @@ err_kfree: static int __exit fsl_udc_remove(struct platform_device *pdev) { struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data; + struct fsl_usb2_platform_data *pdata = dev_get_platdata(&pdev->dev); DECLARE_COMPLETION(done); diff --git a/drivers/usb/gadget/fusb300_udc.c b/drivers/usb/gadget/fusb300_udc.c index c83f3e165325..f1dd6daabe21 100644 --- a/drivers/usb/gadget/fusb300_udc.c +++ b/drivers/usb/gadget/fusb300_udc.c @@ -557,7 +557,7 @@ static void fusb300_set_cxdone(struct fusb300 *fusb300) } /* read data from cx fifo */ -void fusb300_rdcxf(struct fusb300 *fusb300, +static void fusb300_rdcxf(struct fusb300 *fusb300, u8 *buffer, u32 length) { int i = 0; diff --git a/drivers/usb/gadget/goku_udc.c b/drivers/usb/gadget/goku_udc.c index 52dd6cc6c0aa..c64deb9e3d62 100644 --- a/drivers/usb/gadget/goku_udc.c +++ b/drivers/usb/gadget/goku_udc.c @@ -772,7 +772,7 @@ goku_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags) } /* else pio or dma irq handler advances the queue. */ - if (likely(req != 0)) + if (likely(req != NULL)) list_add_tail(&req->queue, &ep->queue); if (likely(!list_empty(&ep->queue)) diff --git a/drivers/usb/gadget/hid.c b/drivers/usb/gadget/hid.c index c36260ea8bf2..778613eb37af 100644 --- a/drivers/usb/gadget/hid.c +++ b/drivers/usb/gadget/hid.c @@ -185,7 +185,7 @@ static int __exit hid_unbind(struct usb_composite_dev *cdev) static int __init hidg_plat_driver_probe(struct platform_device *pdev) { - struct hidg_func_descriptor *func = pdev->dev.platform_data; + struct hidg_func_descriptor *func = dev_get_platdata(&pdev->dev); struct hidg_func_node *entry; if (!func) { diff --git a/drivers/usb/gadget/imx_udc.c b/drivers/usb/gadget/imx_udc.c deleted file mode 100644 index 9b2d24e4c95f..000000000000 --- a/drivers/usb/gadget/imx_udc.c +++ /dev/null @@ -1,1544 +0,0 @@ -/* - * driver/usb/gadget/imx_udc.c - * - * Copyright (C) 2005 Mike Lee <eemike@gmail.com> - * Copyright (C) 2008 Darius Augulis <augulis.darius@gmail.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. - */ - -#include <linux/init.h> -#include <linux/kernel.h> -#include <linux/platform_device.h> -#include <linux/module.h> -#include <linux/errno.h> -#include <linux/list.h> -#include <linux/interrupt.h> -#include <linux/io.h> -#include <linux/irq.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/clk.h> -#include <linux/delay.h> -#include <linux/timer.h> -#include <linux/slab.h> -#include <linux/prefetch.h> - -#include <linux/usb/ch9.h> -#include <linux/usb/gadget.h> - -#include <linux/platform_data/usb-imx_udc.h> -#include <mach/hardware.h> - -#include "imx_udc.h" - -static const char driver_name[] = "imx_udc"; -static const char ep0name[] = "ep0"; - -void ep0_chg_stat(const char *label, struct imx_udc_struct *imx_usb, - enum ep0_state stat); - -/******************************************************************************* - * IMX UDC hardware related functions - ******************************************************************************* - */ - -void imx_udc_enable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_FE_ENA | CTRL_AFE_ENA, - imx_usb->base + USB_CTRL); - imx_usb->gadget.speed = USB_SPEED_FULL; -} - -void imx_udc_disable(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_CTRL); - - __raw_writel(temp & ~(CTRL_FE_ENA | CTRL_AFE_ENA), - imx_usb->base + USB_CTRL); - - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; -} - -void imx_udc_reset(struct imx_udc_struct *imx_usb) -{ - int temp = __raw_readl(imx_usb->base + USB_ENAB); - - /* set RST bit */ - __raw_writel(temp | ENAB_RST, imx_usb->base + USB_ENAB); - - /* wait RST bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_ENAB) & ENAB_RST); - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* udc module is now ready */ -} - -void imx_udc_config(struct imx_udc_struct *imx_usb) -{ - u8 ep_conf[5]; - u8 i, j, cfg; - struct imx_ep_struct *imx_ep; - - /* wait CFG bit to assert */ - do {} while (!(__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG)); - - /* Download the endpoint buffer for endpoint 0. */ - for (j = 0; j < 5; j++) { - i = (j == 2 ? imx_usb->imx_ep[0].fifosize : 0x00); - __raw_writeb(i, imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_BSY); - } - - /* Download the endpoint buffers for endpoints 1-5. - * We specify two configurations, one interface - */ - for (cfg = 1; cfg < 3; cfg++) { - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - /* EP no | Config no */ - ep_conf[0] = (i << 4) | (cfg << 2); - /* Type | Direction */ - ep_conf[1] = (imx_ep->bmAttributes << 3) | - (EP_DIR(imx_ep) << 2); - /* Max packet size */ - ep_conf[2] = imx_ep->fifosize; - /* TRXTYP */ - ep_conf[3] = 0xC0; - /* FIFO no */ - ep_conf[4] = i; - - D_INI(imx_usb->dev, - "<%s> ep%d_conf[%d]:" - "[%02x-%02x-%02x-%02x-%02x]\n", - __func__, i, cfg, - ep_conf[0], ep_conf[1], ep_conf[2], - ep_conf[3], ep_conf[4]); - - for (j = 0; j < 5; j++) { - __raw_writeb(ep_conf[j], - imx_usb->base + USB_DDAT); - do {} while (__raw_readl(imx_usb->base - + USB_DADR) - & DADR_BSY); - } - } - } - - /* wait CFG bit to clear */ - do {} while (__raw_readl(imx_usb->base + USB_DADR) & DADR_CFG); -} - -void imx_udc_init_irq(struct imx_udc_struct *imx_usb) -{ - int i; - - /* Mask and clear all irqs */ - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_MASK); - __raw_writel(0xFFFFFFFF, imx_usb->base + USB_INTR); - for (i = 0; i < IMX_USB_NB_EP; i++) { - __raw_writel(0x1FF, imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_usb->base + USB_EP_INTR(i)); - } - - /* Enable USB irqs */ - __raw_writel(INTR_MSOF | INTR_FRAME_MATCH, imx_usb->base + USB_MASK); - - /* Enable EP0 irqs */ - __raw_writel(0x1FF & ~(EPINTR_DEVREQ | EPINTR_MDEVREQ | EPINTR_EOT - | EPINTR_EOF | EPINTR_FIFO_EMPTY | EPINTR_FIFO_FULL), - imx_usb->base + USB_EP_MASK(0)); -} - -void imx_udc_init_ep(struct imx_udc_struct *imx_usb) -{ - int i, max, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - switch (imx_ep->fifosize) { - case 8: - max = 0; - break; - case 16: - max = 1; - break; - case 32: - max = 2; - break; - case 64: - max = 3; - break; - default: - max = 1; - break; - } - temp = (EP_DIR(imx_ep) << 7) | (max << 5) - | (imx_ep->bmAttributes << 3); - __raw_writel(temp, imx_usb->base + USB_EP_STAT(i)); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(i)); - D_INI(imx_usb->dev, "<%s> ep%d_stat %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_STAT(i))); - } -} - -void imx_udc_init_fifo(struct imx_udc_struct *imx_usb) -{ - int i, temp; - struct imx_ep_struct *imx_ep; - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - /* Fifo control */ - temp = EP_DIR(imx_ep) ? 0x0B000000 : 0x0F000000; - __raw_writel(temp, imx_usb->base + USB_EP_FCTRL(i)); - D_INI(imx_usb->dev, "<%s> ep%d_fctrl %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FCTRL(i))); - - /* Fifo alarm */ - temp = (i ? imx_ep->fifosize / 2 : 0); - __raw_writel(temp, imx_usb->base + USB_EP_FALRM(i)); - D_INI(imx_usb->dev, "<%s> ep%d_falrm %08x\n", __func__, i, - __raw_readl(imx_usb->base + USB_EP_FALRM(i))); - } -} - -static void imx_udc_init(struct imx_udc_struct *imx_usb) -{ - /* Reset UDC */ - imx_udc_reset(imx_usb); - - /* Download config to enpoint buffer */ - imx_udc_config(imx_usb); - - /* Setup interrups */ - imx_udc_init_irq(imx_usb); - - /* Setup endpoints */ - imx_udc_init_ep(imx_usb); - - /* Setup fifos */ - imx_udc_init_fifo(imx_usb); -} - -void imx_ep_irq_enable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); - __raw_writel(0x1FF & ~(EPINTR_EOT | EPINTR_EOF), - imx_ep->imx_usb->base + USB_EP_MASK(i)); -} - -void imx_ep_irq_disable(struct imx_ep_struct *imx_ep) -{ - - int i = EP_NO(imx_ep); - - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_MASK(i)); - __raw_writel(0x1FF, imx_ep->imx_usb->base + USB_EP_INTR(i)); -} - -int imx_ep_empty(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return __raw_readl(imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_EMPTY; -} - -unsigned imx_fifo_bcount(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - return (__raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))) - & EPSTAT_BCOUNT) >> 16; -} - -void imx_flush(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - - int temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_FLUSH, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); -} - -void imx_ep_stall(struct imx_ep_struct *imx_ep) -{ - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - int temp, i; - - D_ERR(imx_usb->dev, - "<%s> Forced stall on %s\n", __func__, imx_ep->ep.name); - - imx_flush(imx_ep); - - /* Special care for ep0 */ - if (!EP_NO(imx_ep)) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER | CTRL_CMDERROR, - imx_usb->base + USB_CTRL); - do { } while (__raw_readl(imx_usb->base + USB_CTRL) - & CTRL_CMDOVER); - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp & ~CTRL_CMDERROR, imx_usb->base + USB_CTRL); - } - else { - temp = __raw_readl(imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_STALL, - imx_usb->base + USB_EP_STAT(EP_NO(imx_ep))); - - for (i = 0; i < 100; i ++) { - temp = __raw_readl(imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - if (!(temp & EPSTAT_STALL)) - break; - udelay(20); - } - if (i == 100) - D_ERR(imx_usb->dev, "<%s> Non finished stall on %s\n", - __func__, imx_ep->ep.name); - } -} - -static int imx_udc_get_frame(struct usb_gadget *_gadget) -{ - struct imx_udc_struct *imx_usb = container_of(_gadget, - struct imx_udc_struct, gadget); - - return __raw_readl(imx_usb->base + USB_FRAME) & 0x7FF; -} - -static int imx_udc_wakeup(struct usb_gadget *_gadget) -{ - return 0; -} - -/******************************************************************************* - * USB request control functions - ******************************************************************************* - */ - -static void ep_add_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - req->in_use = 1; - list_add_tail(&req->queue, &imx_ep->queue); -} - -static void ep_del_request(struct imx_ep_struct *imx_ep, - struct imx_request *req) -{ - if (unlikely(!req)) - return; - - list_del_init(&req->queue); - req->in_use = 0; -} - -static void done(struct imx_ep_struct *imx_ep, - struct imx_request *req, int status) -{ - ep_del_request(imx_ep, req); - - if (likely(req->req.status == -EINPROGRESS)) - req->req.status = status; - else - status = req->req.status; - - if (status && status != -ESHUTDOWN) - D_ERR(imx_ep->imx_usb->dev, - "<%s> complete %s req %p stat %d len %u/%u\n", __func__, - imx_ep->ep.name, &req->req, status, - req->req.actual, req->req.length); - - req->req.complete(&imx_ep->ep, &req->req); -} - -static void nuke(struct imx_ep_struct *imx_ep, int status) -{ - struct imx_request *req; - - while (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - done(imx_ep, req, status); - } -} - -/******************************************************************************* - * Data tansfer over USB functions - ******************************************************************************* - */ -static int read_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int bytes_ep, bufferspace, count, i; - - bytes_ep = imx_fifo_bcount(imx_ep); - bufferspace = req->req.length - req->req.actual; - - buf = req->req.buf + req->req.actual; - prefetchw(buf); - - if (unlikely(imx_ep_empty(imx_ep))) - count = 0; /* zlp */ - else - count = min(bytes_ep, bufferspace); - - for (i = count; i > 0; i--) - *buf++ = __raw_readb(imx_ep->imx_usb->base - + USB_EP_FDAT0(EP_NO(imx_ep))); - req->req.actual += count; - - return count; -} - -static int write_packet(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - u8 *buf; - int length, count, temp; - - if (unlikely(__raw_readl(imx_ep->imx_usb->base + - USB_EP_STAT(EP_NO(imx_ep))) & EPSTAT_ZLPS)) { - D_TRX(imx_ep->imx_usb->dev, "<%s> zlp still queued in EP %s\n", - __func__, imx_ep->ep.name); - return -1; - } - - buf = req->req.buf + req->req.actual; - prefetch(buf); - - length = min(req->req.length - req->req.actual, (u32)imx_ep->fifosize); - - if (imx_fifo_bcount(imx_ep) + length > imx_ep->fifosize) { - D_TRX(imx_ep->imx_usb->dev, "<%s> packet overfill %s fifo\n", - __func__, imx_ep->ep.name); - return -1; - } - - req->req.actual += length; - count = length; - - if (!count && req->req.zero) { /* zlp */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - __raw_writel(temp | EPSTAT_ZLPS, imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - D_TRX(imx_ep->imx_usb->dev, "<%s> zero packet\n", __func__); - return 0; - } - - while (count--) { - if (count == 0) { /* last byte */ - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - __raw_writel(temp | FCTRL_WFR, imx_ep->imx_usb->base - + USB_EP_FCTRL(EP_NO(imx_ep))); - } - __raw_writeb(*buf++, - imx_ep->imx_usb->base + USB_EP_FDAT0(EP_NO(imx_ep))); - } - - return length; -} - -static int read_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (__raw_readl(imx_ep->imx_usb->base + USB_EP_FSTAT(EP_NO(imx_ep))) - & FSTAT_FR) { - count = read_packet(imx_ep, req); - bytes += count; - - completed = (count != imx_ep->fifosize); - if (completed || req->req.actual == req->req.length) { - completed = 1; - break; - } - } - - if (completed || !req->req.length) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, imx_ep->imx_usb, EP0_IDLE); - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes read: %d\n", __func__, bytes); - - return completed; -} - -static int write_fifo(struct imx_ep_struct *imx_ep, struct imx_request *req) -{ - int bytes = 0, - count, - completed = 0; - - while (!completed) { - count = write_packet(imx_ep, req); - if (count < 0) - break; /* busy */ - bytes += count; - - /* last packet "must be" short (or a zlp) */ - completed = (count != imx_ep->fifosize); - - if (unlikely(completed)) { - done(imx_ep, req, 0); - D_REQ(imx_ep->imx_usb->dev, "<%s> %s req<%p> %s\n", - __func__, imx_ep->ep.name, req, - completed ? "completed" : "not completed"); - if (!EP_NO(imx_ep)) - ep0_chg_stat(__func__, - imx_ep->imx_usb, EP0_IDLE); - } - } - - D_TRX(imx_ep->imx_usb->dev, "<%s> bytes sent: %d\n", __func__, bytes); - - return completed; -} - -/******************************************************************************* - * Endpoint handlers - ******************************************************************************* - */ -static int handle_ep(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req; - int completed = 0; - - do { - if (!list_empty(&imx_ep->queue)) - req = list_entry(imx_ep->queue.next, - struct imx_request, queue); - else { - D_REQ(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - return 0; - } - - if (EP_DIR(imx_ep)) /* to host */ - completed = write_fifo(imx_ep, req); - else /* to device */ - completed = read_fifo(imx_ep, req); - - dump_ep_stat(__func__, imx_ep); - - } while (completed); - - return 0; -} - -static int handle_ep0(struct imx_ep_struct *imx_ep) -{ - struct imx_request *req = NULL; - int ret = 0; - - if (!list_empty(&imx_ep->queue)) { - req = list_entry(imx_ep->queue.next, struct imx_request, queue); - - switch (imx_ep->imx_usb->ep0state) { - - case EP0_IN_DATA_PHASE: /* GET_DESCRIPTOR */ - write_fifo(imx_ep, req); - break; - case EP0_OUT_DATA_PHASE: /* SET_DESCRIPTOR */ - read_fifo(imx_ep, req); - break; - default: - D_EP0(imx_ep->imx_usb->dev, - "<%s> ep0 i/o, odd state %d\n", - __func__, imx_ep->imx_usb->ep0state); - ep_del_request(imx_ep, req); - ret = -EL2HLT; - break; - } - } - - else - D_ERR(imx_ep->imx_usb->dev, "<%s> no request on %s\n", - __func__, imx_ep->ep.name); - - return ret; -} - -static void handle_ep0_devreq(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - union { - struct usb_ctrlrequest r; - u8 raw[8]; - u32 word[2]; - } u; - int temp, i; - - nuke(imx_ep, -EPROTO); - - /* read SETUP packet */ - for (i = 0; i < 2; i++) { - if (imx_ep_empty(imx_ep)) { - D_ERR(imx_usb->dev, - "<%s> no setup packet received\n", __func__); - goto stall; - } - u.word[i] = __raw_readl(imx_usb->base - + USB_EP_FDAT(EP_NO(imx_ep))); - } - - temp = imx_ep_empty(imx_ep); - while (!imx_ep_empty(imx_ep)) { - i = __raw_readl(imx_usb->base + USB_EP_FDAT(EP_NO(imx_ep))); - D_ERR(imx_usb->dev, - "<%s> wrong to have extra bytes for setup : 0x%08x\n", - __func__, i); - } - if (!temp) - goto stall; - - le16_to_cpus(&u.r.wValue); - le16_to_cpus(&u.r.wIndex); - le16_to_cpus(&u.r.wLength); - - D_REQ(imx_usb->dev, "<%s> SETUP %02x.%02x v%04x i%04x l%04x\n", - __func__, u.r.bRequestType, u.r.bRequest, - u.r.wValue, u.r.wIndex, u.r.wLength); - - if (imx_usb->set_config) { - /* NACK the host by using CMDOVER */ - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, imx_usb->base + USB_CTRL); - - D_ERR(imx_usb->dev, - "<%s> set config req is pending, NACK the host\n", - __func__); - return; - } - - if (u.r.bRequestType & USB_DIR_IN) - ep0_chg_stat(__func__, imx_usb, EP0_IN_DATA_PHASE); - else - ep0_chg_stat(__func__, imx_usb, EP0_OUT_DATA_PHASE); - - i = imx_usb->driver->setup(&imx_usb->gadget, &u.r); - if (i < 0) { - D_ERR(imx_usb->dev, "<%s> device setup error %d\n", - __func__, i); - goto stall; - } - - return; -stall: - D_ERR(imx_usb->dev, "<%s> protocol STALL\n", __func__); - imx_ep_stall(imx_ep); - ep0_chg_stat(__func__, imx_usb, EP0_STALL); - return; -} - -/******************************************************************************* - * USB gadget callback functions - ******************************************************************************* - */ - -static int imx_ep_enable(struct usb_ep *usb_ep, - const struct usb_endpoint_descriptor *desc) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - struct imx_udc_struct *imx_usb = imx_ep->imx_usb; - unsigned long flags; - - if (!usb_ep - || !desc - || !EP_NO(imx_ep) - || desc->bDescriptorType != USB_DT_ENDPOINT - || imx_ep->bEndpointAddress != desc->bEndpointAddress) { - D_ERR(imx_usb->dev, - "<%s> bad ep or descriptor\n", __func__); - return -EINVAL; - } - - if (imx_ep->bmAttributes != desc->bmAttributes) { - D_ERR(imx_usb->dev, - "<%s> %s type mismatch\n", __func__, usb_ep->name); - return -EINVAL; - } - - if (imx_ep->fifosize < usb_endpoint_maxp(desc)) { - D_ERR(imx_usb->dev, - "<%s> bad %s maxpacket\n", __func__, usb_ep->name); - return -ERANGE; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - local_irq_save(flags); - - imx_ep->stopped = 0; - imx_flush(imx_ep); - imx_ep_irq_enable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_usb->dev, "<%s> ENABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_disable(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of(usb_ep, - struct imx_ep_struct, ep); - unsigned long flags; - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> %s can not be disabled\n", - __func__, usb_ep ? imx_ep->ep.name : NULL); - return -EINVAL; - } - - local_irq_save(flags); - - imx_ep->stopped = 1; - nuke(imx_ep, -ESHUTDOWN); - imx_flush(imx_ep); - imx_ep_irq_disable(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, - "<%s> DISABLED %s\n", __func__, usb_ep->name); - return 0; -} - -static struct usb_request *imx_ep_alloc_request - (struct usb_ep *usb_ep, gfp_t gfp_flags) -{ - struct imx_request *req; - - if (!usb_ep) - return NULL; - - req = kzalloc(sizeof *req, gfp_flags); - if (!req) - return NULL; - - INIT_LIST_HEAD(&req->queue); - req->in_use = 0; - - return &req->req; -} - -static void imx_ep_free_request - (struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - struct imx_request *req; - - req = container_of(usb_req, struct imx_request, req); - WARN_ON(!list_empty(&req->queue)); - kfree(req); -} - -static int imx_ep_queue - (struct usb_ep *usb_ep, struct usb_request *usb_req, gfp_t gfp_flags) -{ - struct imx_ep_struct *imx_ep; - struct imx_udc_struct *imx_usb; - struct imx_request *req; - unsigned long flags; - int ret = 0; - - imx_ep = container_of(usb_ep, struct imx_ep_struct, ep); - imx_usb = imx_ep->imx_usb; - req = container_of(usb_req, struct imx_request, req); - - /* - Special care on IMX udc. - Ignore enqueue when after set configuration from the - host. This assume all gadget drivers reply set - configuration with the next ep0 req enqueue. - */ - if (imx_usb->set_config && !EP_NO(imx_ep)) { - imx_usb->set_config = 0; - D_ERR(imx_usb->dev, - "<%s> gadget reply set config\n", __func__); - return 0; - } - - if (unlikely(!usb_req || !req || !usb_req->complete || !usb_req->buf)) { - D_ERR(imx_usb->dev, "<%s> bad params\n", __func__); - return -EINVAL; - } - - if (unlikely(!usb_ep || !imx_ep)) { - D_ERR(imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - if (!imx_usb->driver || imx_usb->gadget.speed == USB_SPEED_UNKNOWN) { - D_ERR(imx_usb->dev, "<%s> bogus device state\n", __func__); - return -ESHUTDOWN; - } - - /* Debug */ - D_REQ(imx_usb->dev, "<%s> ep%d %s request for [%d] bytes\n", - __func__, EP_NO(imx_ep), - ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) - ? "IN" : "OUT", usb_req->length); - dump_req(__func__, imx_ep, usb_req); - - if (imx_ep->stopped) { - usb_req->status = -ESHUTDOWN; - return -ESHUTDOWN; - } - - if (req->in_use) { - D_ERR(imx_usb->dev, - "<%s> refusing to queue req %p (already queued)\n", - __func__, req); - return 0; - } - - local_irq_save(flags); - - usb_req->status = -EINPROGRESS; - usb_req->actual = 0; - - ep_add_request(imx_ep, req); - - if (!EP_NO(imx_ep)) - ret = handle_ep0(imx_ep); - else - ret = handle_ep(imx_ep); - - local_irq_restore(flags); - return ret; -} - -static int imx_ep_dequeue(struct usb_ep *usb_ep, struct usb_request *usb_req) -{ - - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - struct imx_request *req; - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - /* make sure it's actually queued on this endpoint */ - list_for_each_entry(req, &imx_ep->queue, queue) { - if (&req->req == usb_req) - break; - } - if (&req->req != usb_req) { - local_irq_restore(flags); - return -EINVAL; - } - - done(imx_ep, req, -ECONNRESET); - - local_irq_restore(flags); - return 0; -} - -static int imx_ep_set_halt(struct usb_ep *usb_ep, int value) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - if (unlikely(!usb_ep || !EP_NO(imx_ep))) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -EINVAL; - } - - local_irq_save(flags); - - if ((imx_ep->bEndpointAddress & USB_DIR_IN) - && !list_empty(&imx_ep->queue)) { - local_irq_restore(flags); - return -EAGAIN; - } - - imx_ep_stall(imx_ep); - - local_irq_restore(flags); - - D_EPX(imx_ep->imx_usb->dev, "<%s> %s halt\n", __func__, usb_ep->name); - return 0; -} - -static int imx_ep_fifo_status(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - - if (!usb_ep) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - return -ENODEV; - } - - if (imx_ep->imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - return 0; - else - return imx_fifo_bcount(imx_ep); -} - -static void imx_ep_fifo_flush(struct usb_ep *usb_ep) -{ - struct imx_ep_struct *imx_ep = container_of - (usb_ep, struct imx_ep_struct, ep); - unsigned long flags; - - local_irq_save(flags); - - if (!usb_ep || !EP_NO(imx_ep) || !list_empty(&imx_ep->queue)) { - D_ERR(imx_ep->imx_usb->dev, "<%s> bad ep\n", __func__); - local_irq_restore(flags); - return; - } - - /* toggle and halt bits stay unchanged */ - imx_flush(imx_ep); - - local_irq_restore(flags); -} - -static struct usb_ep_ops imx_ep_ops = { - .enable = imx_ep_enable, - .disable = imx_ep_disable, - - .alloc_request = imx_ep_alloc_request, - .free_request = imx_ep_free_request, - - .queue = imx_ep_queue, - .dequeue = imx_ep_dequeue, - - .set_halt = imx_ep_set_halt, - .fifo_status = imx_ep_fifo_status, - .fifo_flush = imx_ep_fifo_flush, -}; - -/******************************************************************************* - * USB endpoint control functions - ******************************************************************************* - */ - -void ep0_chg_stat(const char *label, - struct imx_udc_struct *imx_usb, enum ep0_state stat) -{ - D_EP0(imx_usb->dev, "<%s> from %15s to %15s\n", - label, state_name[imx_usb->ep0state], state_name[stat]); - - if (imx_usb->ep0state == stat) - return; - - imx_usb->ep0state = stat; -} - -static void usb_init_data(struct imx_udc_struct *imx_usb) -{ - struct imx_ep_struct *imx_ep; - u8 i; - - /* device/ep0 records init */ - INIT_LIST_HEAD(&imx_usb->gadget.ep_list); - INIT_LIST_HEAD(&imx_usb->gadget.ep0->ep_list); - ep0_chg_stat(__func__, imx_usb, EP0_IDLE); - - /* basic endpoint records init */ - for (i = 0; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - - if (i) { - list_add_tail(&imx_ep->ep.ep_list, - &imx_usb->gadget.ep_list); - imx_ep->stopped = 1; - } else - imx_ep->stopped = 0; - - INIT_LIST_HEAD(&imx_ep->queue); - } -} - -static void udc_stop_activity(struct imx_udc_struct *imx_usb, - struct usb_gadget_driver *driver) -{ - struct imx_ep_struct *imx_ep; - int i; - - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN) - driver = NULL; - - /* prevent new request submissions, kill any outstanding requests */ - for (i = 1; i < IMX_USB_NB_EP; i++) { - imx_ep = &imx_usb->imx_ep[i]; - imx_flush(imx_ep); - imx_ep->stopped = 1; - imx_ep_irq_disable(imx_ep); - nuke(imx_ep, -ESHUTDOWN); - } - - imx_usb->cfg = 0; - imx_usb->intf = 0; - imx_usb->alt = 0; - - if (driver) - driver->disconnect(&imx_usb->gadget); -} - -/******************************************************************************* - * Interrupt handlers - ******************************************************************************* - */ - -/* - * Called when timer expires. - * Timer is started when CFG_CHG is received. - */ -static void handle_config(unsigned long data) -{ - struct imx_udc_struct *imx_usb = (void *)data; - struct usb_ctrlrequest u; - int temp, cfg, intf, alt; - - local_irq_disable(); - - temp = __raw_readl(imx_usb->base + USB_STAT); - cfg = (temp & STAT_CFG) >> 5; - intf = (temp & STAT_INTF) >> 3; - alt = temp & STAT_ALTSET; - - D_REQ(imx_usb->dev, - "<%s> orig config C=%d, I=%d, A=%d / " - "req config C=%d, I=%d, A=%d\n", - __func__, imx_usb->cfg, imx_usb->intf, imx_usb->alt, - cfg, intf, alt); - - if (cfg == 1 || cfg == 2) { - - if (imx_usb->cfg != cfg) { - u.bRequest = USB_REQ_SET_CONFIGURATION; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_DEVICE; - u.wValue = cfg; - u.wIndex = 0; - u.wLength = 0; - imx_usb->cfg = cfg; - imx_usb->driver->setup(&imx_usb->gadget, &u); - - } - if (imx_usb->intf != intf || imx_usb->alt != alt) { - u.bRequest = USB_REQ_SET_INTERFACE; - u.bRequestType = USB_DIR_OUT | - USB_TYPE_STANDARD | - USB_RECIP_INTERFACE; - u.wValue = alt; - u.wIndex = intf; - u.wLength = 0; - imx_usb->intf = intf; - imx_usb->alt = alt; - imx_usb->driver->setup(&imx_usb->gadget, &u); - } - } - - imx_usb->set_config = 0; - - local_irq_enable(); -} - -static irqreturn_t imx_udc_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - int intr = __raw_readl(imx_usb->base + USB_INTR); - int temp; - - if (intr & (INTR_WAKEUP | INTR_SUSPEND | INTR_RESUME | INTR_RESET_START - | INTR_RESET_STOP | INTR_CFG_CHG)) { - dump_intr(__func__, intr, imx_usb->dev); - dump_usb_stat(__func__, imx_usb); - } - - if (!imx_usb->driver) - goto end_irq; - - if (intr & INTR_SOF) { - /* Copy from Freescale BSP. - We must enable SOF intr and set CMDOVER. - Datasheet don't specifiy this action, but it - is done in Freescale BSP, so just copy it. - */ - if (imx_usb->ep0state == EP0_IDLE) { - temp = __raw_readl(imx_usb->base + USB_CTRL); - __raw_writel(temp | CTRL_CMDOVER, - imx_usb->base + USB_CTRL); - } - } - - if (intr & INTR_CFG_CHG) { - /* A workaround of serious IMX UDC bug. - Handling of CFG_CHG should be delayed for some time, because - IMX does not NACK the host when CFG_CHG interrupt is pending. - There is no time to handle current CFG_CHG - if next CFG_CHG or SETUP packed is send immediately. - We have to clear CFG_CHG, start the timer and - NACK the host by setting CTRL_CMDOVER - if it sends any SETUP packet. - When timer expires, handler is called to handle configuration - changes. While CFG_CHG is not handled (set_config=1), - we must NACK the host to every SETUP packed. - This delay prevents from going out of sync with host. - */ - __raw_writel(INTR_CFG_CHG, imx_usb->base + USB_INTR); - imx_usb->set_config = 1; - mod_timer(&imx_usb->timer, jiffies + 5); - goto end_irq; - } - - if (intr & INTR_WAKEUP) { - if (imx_usb->gadget.speed == USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->resume) - imx_usb->driver->resume(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_FULL; - } - - if (intr & INTR_SUSPEND) { - if (imx_usb->gadget.speed != USB_SPEED_UNKNOWN - && imx_usb->driver && imx_usb->driver->suspend) - imx_usb->driver->suspend(&imx_usb->gadget); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_START) { - __raw_writel(intr, imx_usb->base + USB_INTR); - udc_stop_activity(imx_usb, imx_usb->driver); - imx_usb->set_config = 0; - del_timer(&imx_usb->timer); - imx_usb->gadget.speed = USB_SPEED_UNKNOWN; - } - - if (intr & INTR_RESET_STOP) - imx_usb->gadget.speed = USB_SPEED_FULL; - -end_irq: - __raw_writel(intr, imx_usb->base + USB_INTR); - return IRQ_HANDLED; -} - -static irqreturn_t imx_udc_ctrl_irq(int irq, void *dev) -{ - struct imx_udc_struct *imx_usb = dev; - struct imx_ep_struct *imx_ep = &imx_usb->imx_ep[0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(0)); - - dump_ep_intr(__func__, 0, intr, imx_usb->dev); - - if (!imx_usb->driver) { - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - return IRQ_HANDLED; - } - - /* DEVREQ has highest priority */ - if (intr & (EPINTR_DEVREQ | EPINTR_MDEVREQ)) - handle_ep0_devreq(imx_usb); - /* Seem i.MX is missing EOF interrupt sometimes. - * Therefore we don't monitor EOF. - * We call handle_ep0() only if a request is queued for ep0. - */ - else if (!list_empty(&imx_ep->queue)) - handle_ep0(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(0)); - - 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_INT_USBD0]; - int intr = __raw_readl(imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - 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))); - return IRQ_HANDLED; - } - - handle_ep(imx_ep); - - __raw_writel(intr, imx_usb->base + USB_EP_INTR(EP_NO(imx_ep))); - - return IRQ_HANDLED; -} - -irq_handler_t intr_handler(int i) -{ - switch (i) { - case 0: - return imx_udc_ctrl_irq; - case 1: - case 2: - case 3: - case 4: - case 5: - return imx_udc_bulk_irq; - default: - return imx_udc_irq; - } -} - -/******************************************************************************* - * Static defined IMX UDC structure - ******************************************************************************* - */ - -static int imx_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver); -static int imx_udc_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver); -static const struct usb_gadget_ops imx_udc_ops = { - .get_frame = imx_udc_get_frame, - .wakeup = imx_udc_wakeup, - .udc_start = imx_udc_start, - .udc_stop = imx_udc_stop, -}; - -static struct imx_udc_struct controller = { - .gadget = { - .ops = &imx_udc_ops, - .ep0 = &controller.imx_ep[0].ep, - .name = driver_name, - .dev = { - .init_name = "gadget", - }, - }, - - .imx_ep[0] = { - .ep = { - .name = ep0name, - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = 0, - .bmAttributes = USB_ENDPOINT_XFER_CONTROL, - }, - .imx_ep[1] = { - .ep = { - .name = "ep1in-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_IN | 1, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[2] = { - .ep = { - .name = "ep2out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 64, - }, - .imx_usb = &controller, - .fifosize = 64, - .bEndpointAddress = USB_DIR_OUT | 2, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[3] = { - .ep = { - .name = "ep3out-bulk", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 3, - .bmAttributes = USB_ENDPOINT_XFER_BULK, - }, - .imx_ep[4] = { - .ep = { - .name = "ep4in-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_IN | 4, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, - .imx_ep[5] = { - .ep = { - .name = "ep5out-int", - .ops = &imx_ep_ops, - .maxpacket = 32, - }, - .imx_usb = &controller, - .fifosize = 32, - .bEndpointAddress = USB_DIR_OUT | 5, - .bmAttributes = USB_ENDPOINT_XFER_INT, - }, -}; - -/******************************************************************************* - * USB gadget driver functions - ******************************************************************************* - */ -static int imx_udc_start(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct imx_udc_struct *imx_usb; - - imx_usb = container_of(gadget, struct imx_udc_struct, gadget); - /* first hook up the driver ... */ - imx_usb->driver = driver; - - D_INI(imx_usb->dev, "<%s> registered gadget driver '%s'\n", - __func__, driver->driver.name); - - imx_udc_enable(imx_usb); - - return 0; -} - -static int imx_udc_stop(struct usb_gadget *gadget, - struct usb_gadget_driver *driver) -{ - struct imx_udc_struct *imx_usb = container_of(gadget, - struct imx_udc_struct, gadget); - - udc_stop_activity(imx_usb, driver); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - imx_usb->driver = NULL; - - D_INI(imx_usb->dev, "<%s> unregistered gadget driver '%s'\n", - __func__, driver->driver.name); - - return 0; -} - -/******************************************************************************* - * Module functions - ******************************************************************************* - */ - -static int __init imx_udc_probe(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = &controller; - struct resource *res; - struct imxusb_platform_data *pdata; - struct clk *clk; - void __iomem *base; - int ret = 0; - int i; - resource_size_t res_size; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) { - dev_err(&pdev->dev, "can't get device resources\n"); - return -ENODEV; - } - - pdata = pdev->dev.platform_data; - if (!pdata) { - dev_err(&pdev->dev, "driver needs platform data\n"); - return -ENODEV; - } - - res_size = resource_size(res); - if (!request_mem_region(res->start, res_size, res->name)) { - dev_err(&pdev->dev, "can't allocate %d bytes at %d address\n", - res_size, res->start); - return -ENOMEM; - } - - if (pdata->init) { - ret = pdata->init(&pdev->dev); - if (ret) - goto fail0; - } - - base = ioremap(res->start, res_size); - if (!base) { - dev_err(&pdev->dev, "ioremap failed\n"); - ret = -EIO; - goto fail1; - } - - clk = clk_get(NULL, "usbd_clk"); - if (IS_ERR(clk)) { - ret = PTR_ERR(clk); - dev_err(&pdev->dev, "can't get USB clock\n"); - goto fail2; - } - clk_prepare_enable(clk); - - if (clk_get_rate(clk) != 48000000) { - D_INI(&pdev->dev, - "Bad USB clock (%d Hz), changing to 48000000 Hz\n", - (int)clk_get_rate(clk)); - if (clk_set_rate(clk, 48000000)) { - dev_err(&pdev->dev, - "Unable to set correct USB clock (48MHz)\n"); - ret = -EIO; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - imx_usb->usbd_int[i] = platform_get_irq(pdev, i); - if (imx_usb->usbd_int[i] < 0) { - dev_err(&pdev->dev, "can't get irq number\n"); - ret = -ENODEV; - goto fail3; - } - } - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) { - ret = request_irq(imx_usb->usbd_int[i], intr_handler(i), - 0, driver_name, imx_usb); - if (ret) { - dev_err(&pdev->dev, "can't get irq %i, err %d\n", - imx_usb->usbd_int[i], ret); - for (--i; i >= 0; i--) - free_irq(imx_usb->usbd_int[i], imx_usb); - goto fail3; - } - } - - imx_usb->res = res; - imx_usb->base = base; - imx_usb->clk = clk; - imx_usb->dev = &pdev->dev; - - platform_set_drvdata(pdev, imx_usb); - - usb_init_data(imx_usb); - imx_udc_init(imx_usb); - - init_timer(&imx_usb->timer); - imx_usb->timer.function = handle_config; - imx_usb->timer.data = (unsigned long)imx_usb; - - ret = usb_add_gadget_udc(&pdev->dev, &imx_usb->gadget); - if (ret) - goto fail4; - - return 0; -fail4: - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); -fail3: - clk_put(clk); - clk_disable_unprepare(clk); -fail2: - iounmap(base); -fail1: - if (pdata->exit) - pdata->exit(&pdev->dev); -fail0: - release_mem_region(res->start, res_size); - return ret; -} - -static int __exit imx_udc_remove(struct platform_device *pdev) -{ - struct imx_udc_struct *imx_usb = platform_get_drvdata(pdev); - struct imxusb_platform_data *pdata = pdev->dev.platform_data; - int i; - - usb_del_gadget_udc(&imx_usb->gadget); - imx_udc_disable(imx_usb); - del_timer(&imx_usb->timer); - - for (i = 0; i < IMX_USB_NB_EP + 1; i++) - free_irq(imx_usb->usbd_int[i], imx_usb); - - clk_put(imx_usb->clk); - clk_disable_unprepare(imx_usb->clk); - iounmap(imx_usb->base); - - release_mem_region(imx_usb->res->start, resource_size(imx_usb->res)); - - if (pdata->exit) - pdata->exit(&pdev->dev); - - return 0; -} - -/*----------------------------------------------------------------------------*/ - -#ifdef CONFIG_PM -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#else -#define imx_udc_suspend NULL -#define imx_udc_resume NULL -#endif - -/*----------------------------------------------------------------------------*/ - -static struct platform_driver udc_driver = { - .driver = { - .name = driver_name, - .owner = THIS_MODULE, - }, - .remove = __exit_p(imx_udc_remove), - .suspend = imx_udc_suspend, - .resume = imx_udc_resume, -}; - -module_platform_driver_probe(udc_driver, imx_udc_probe); - -MODULE_DESCRIPTION("IMX USB Device Controller driver"); -MODULE_AUTHOR("Darius Augulis <augulis.darius@gmail.com>"); -MODULE_LICENSE("GPL"); -MODULE_ALIAS("platform:imx_udc"); diff --git a/drivers/usb/gadget/imx_udc.h b/drivers/usb/gadget/imx_udc.h deleted file mode 100644 index d118fb777840..000000000000 --- a/drivers/usb/gadget/imx_udc.h +++ /dev/null @@ -1,351 +0,0 @@ -/* - * Copyright (C) 2005 Mike Lee(eemike@gmail.com) - * - * This udc driver is now under testing and code is based on pxa2xx_udc.h - * Please use it with your own risk! - * - * 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. - */ - -#ifndef __LINUX_USB_GADGET_IMX_H -#define __LINUX_USB_GADGET_IMX_H - -#include <linux/types.h> - -/* Helper macros */ -#define EP_NO(ep) ((ep->bEndpointAddress) & ~USB_DIR_IN) /* IN:1, OUT:0 */ -#define EP_DIR(ep) ((ep->bEndpointAddress) & USB_DIR_IN ? 1 : 0) -#define IMX_USB_NB_EP 6 - -/* Driver structures */ -struct imx_request { - struct usb_request req; - struct list_head queue; - unsigned int in_use; -}; - -enum ep0_state { - EP0_IDLE, - EP0_IN_DATA_PHASE, - EP0_OUT_DATA_PHASE, - EP0_CONFIG, - EP0_STALL, -}; - -struct imx_ep_struct { - struct usb_ep ep; - struct imx_udc_struct *imx_usb; - struct list_head queue; - unsigned char stopped; - unsigned char fifosize; - unsigned char bEndpointAddress; - unsigned char bmAttributes; -}; - -struct imx_udc_struct { - struct usb_gadget gadget; - struct usb_gadget_driver *driver; - struct device *dev; - struct imx_ep_struct imx_ep[IMX_USB_NB_EP]; - struct clk *clk; - struct timer_list timer; - enum ep0_state ep0state; - struct resource *res; - void __iomem *base; - unsigned char set_config; - int cfg, - intf, - alt, - usbd_int[7]; -}; - -/* USB registers */ -#define USB_FRAME (0x00) /* USB frame */ -#define USB_SPEC (0x04) /* USB Spec */ -#define USB_STAT (0x08) /* USB Status */ -#define USB_CTRL (0x0C) /* USB Control */ -#define USB_DADR (0x10) /* USB Desc RAM addr */ -#define USB_DDAT (0x14) /* USB Desc RAM/EP buffer data */ -#define USB_INTR (0x18) /* USB interrupt */ -#define USB_MASK (0x1C) /* USB Mask */ -#define USB_ENAB (0x24) /* USB Enable */ -#define USB_EP_STAT(x) (0x30 + (x*0x30)) /* USB status/control */ -#define USB_EP_INTR(x) (0x34 + (x*0x30)) /* USB interrupt */ -#define USB_EP_MASK(x) (0x38 + (x*0x30)) /* USB mask */ -#define USB_EP_FDAT(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT0(x) (0x3C + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT1(x) (0x3D + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT2(x) (0x3E + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FDAT3(x) (0x3F + (x*0x30)) /* USB FIFO data */ -#define USB_EP_FSTAT(x) (0x40 + (x*0x30)) /* USB FIFO status */ -#define USB_EP_FCTRL(x) (0x44 + (x*0x30)) /* USB FIFO control */ -#define USB_EP_LRFP(x) (0x48 + (x*0x30)) /* USB last rd f. pointer */ -#define USB_EP_LWFP(x) (0x4C + (x*0x30)) /* USB last wr f. pointer */ -#define USB_EP_FALRM(x) (0x50 + (x*0x30)) /* USB FIFO alarm */ -#define USB_EP_FRDP(x) (0x54 + (x*0x30)) /* USB FIFO read pointer */ -#define USB_EP_FWRP(x) (0x58 + (x*0x30)) /* USB FIFO write pointer */ -/* USB Control Register Bit Fields.*/ -#define CTRL_CMDOVER (1<<6) /* UDC status */ -#define CTRL_CMDERROR (1<<5) /* UDC status */ -#define CTRL_FE_ENA (1<<3) /* Enable Font End logic */ -#define CTRL_UDC_RST (1<<2) /* UDC reset */ -#define CTRL_AFE_ENA (1<<1) /* Analog Font end enable */ -#define CTRL_RESUME (1<<0) /* UDC resume */ -/* USB Status Register Bit Fields.*/ -#define STAT_RST (1<<8) -#define STAT_SUSP (1<<7) -#define STAT_CFG (3<<5) -#define STAT_INTF (3<<3) -#define STAT_ALTSET (7<<0) -/* USB Interrupt Status/Mask Registers Bit fields */ -#define INTR_WAKEUP (1<<31) /* Wake up Interrupt */ -#define INTR_MSOF (1<<7) /* Missed Start of Frame */ -#define INTR_SOF (1<<6) /* Start of Frame */ -#define INTR_RESET_STOP (1<<5) /* Reset Signaling stop */ -#define INTR_RESET_START (1<<4) /* Reset Signaling start */ -#define INTR_RESUME (1<<3) /* Suspend to resume */ -#define INTR_SUSPEND (1<<2) /* Active to suspend */ -#define INTR_FRAME_MATCH (1<<1) /* Frame matched */ -#define INTR_CFG_CHG (1<<0) /* Configuration change occurred */ -/* USB Enable Register Bit Fields.*/ -#define ENAB_RST (1<<31) /* Reset USB modules */ -#define ENAB_ENAB (1<<30) /* Enable USB modules*/ -#define ENAB_SUSPEND (1<<29) /* Suspend USB modules */ -#define ENAB_ENDIAN (1<<28) /* Endian of USB modules */ -#define ENAB_PWRMD (1<<0) /* Power mode of USB modules */ -/* USB Descriptor Ram Address Register bit fields */ -#define DADR_CFG (1<<31) /* Configuration */ -#define DADR_BSY (1<<30) /* Busy status */ -#define DADR_DADR (0x1FF) /* Descriptor Ram Address */ -/* USB Descriptor RAM/Endpoint Buffer Data Register bit fields */ -#define DDAT_DDAT (0xFF) /* Descriptor Endpoint Buffer */ -/* USB Endpoint Status Register bit fields */ -#define EPSTAT_BCOUNT (0x7F<<16) /* Endpoint FIFO byte count */ -#define EPSTAT_SIP (1<<8) /* Endpoint setup in progress */ -#define EPSTAT_DIR (1<<7) /* Endpoint transfer direction */ -#define EPSTAT_MAX (3<<5) /* Endpoint Max packet size */ -#define EPSTAT_TYP (3<<3) /* Endpoint type */ -#define EPSTAT_ZLPS (1<<2) /* Send zero length packet */ -#define EPSTAT_FLUSH (1<<1) /* Endpoint FIFO Flush */ -#define EPSTAT_STALL (1<<0) /* Force stall */ -/* USB Endpoint FIFO Status Register bit fields */ -#define FSTAT_FRAME_STAT (0xF<<24) /* Frame status bit [0-3] */ -#define FSTAT_ERR (1<<22) /* FIFO error */ -#define FSTAT_UF (1<<21) /* FIFO underflow */ -#define FSTAT_OF (1<<20) /* FIFO overflow */ -#define FSTAT_FR (1<<19) /* FIFO frame ready */ -#define FSTAT_FULL (1<<18) /* FIFO full */ -#define FSTAT_ALRM (1<<17) /* FIFO alarm */ -#define FSTAT_EMPTY (1<<16) /* FIFO empty */ -/* USB Endpoint FIFO Control Register bit fields */ -#define FCTRL_WFR (1<<29) /* Write frame end */ -/* USB Endpoint Interrupt Status Regsiter bit fields */ -#define EPINTR_FIFO_FULL (1<<8) /* fifo full */ -#define EPINTR_FIFO_EMPTY (1<<7) /* fifo empty */ -#define EPINTR_FIFO_ERROR (1<<6) /* fifo error */ -#define EPINTR_FIFO_HIGH (1<<5) /* fifo high */ -#define EPINTR_FIFO_LOW (1<<4) /* fifo low */ -#define EPINTR_MDEVREQ (1<<3) /* multi Device request */ -#define EPINTR_EOT (1<<2) /* fifo end of transfer */ -#define EPINTR_DEVREQ (1<<1) /* Device request */ -#define EPINTR_EOF (1<<0) /* fifo end of frame */ - -/* Debug macros */ -#ifdef DEBUG - -/* #define DEBUG_REQ */ -/* #define DEBUG_TRX */ -/* #define DEBUG_INIT */ -/* #define DEBUG_EP0 */ -/* #define DEBUG_EPX */ -/* #define DEBUG_IRQ */ -/* #define DEBUG_EPIRQ */ -/* #define DEBUG_DUMP */ -/* #define DEBUG_ERR */ - -#ifdef DEBUG_REQ - #define D_REQ(dev, args...) dev_dbg(dev, ## args) -#else - #define D_REQ(dev, args...) do {} while (0) -#endif /* DEBUG_REQ */ - -#ifdef DEBUG_TRX - #define D_TRX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_TRX(dev, args...) do {} while (0) -#endif /* DEBUG_TRX */ - -#ifdef DEBUG_INIT - #define D_INI(dev, args...) dev_dbg(dev, ## args) -#else - #define D_INI(dev, args...) do {} while (0) -#endif /* DEBUG_INIT */ - -#ifdef DEBUG_EP0 - static const char *state_name[] = { - "EP0_IDLE", - "EP0_IN_DATA_PHASE", - "EP0_OUT_DATA_PHASE", - "EP0_CONFIG", - "EP0_STALL" - }; - #define D_EP0(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EP0(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_EPX - #define D_EPX(dev, args...) dev_dbg(dev, ## args) -#else - #define D_EPX(dev, args...) do {} while (0) -#endif /* DEBUG_EP0 */ - -#ifdef DEBUG_IRQ - static void dump_intr(const char *label, int irqreg, struct device *dev) - { - dev_dbg(dev, "<%s> USB_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, - (irqreg & INTR_WAKEUP) ? " wake" : "", - (irqreg & INTR_MSOF) ? " msof" : "", - (irqreg & INTR_SOF) ? " sof" : "", - (irqreg & INTR_RESUME) ? " resume" : "", - (irqreg & INTR_SUSPEND) ? " suspend" : "", - (irqreg & INTR_RESET_STOP) ? " noreset" : "", - (irqreg & INTR_RESET_START) ? " reset" : "", - (irqreg & INTR_FRAME_MATCH) ? " fmatch" : "", - (irqreg & INTR_CFG_CHG) ? " config" : ""); - } -#else - #define dump_intr(x, y, z) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_EPIRQ - static void dump_ep_intr(const char *label, int nr, int irqreg, - struct device *dev) - { - dev_dbg(dev, "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", label, nr, - (irqreg & EPINTR_FIFO_FULL) ? " full" : "", - (irqreg & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (irqreg & EPINTR_FIFO_ERROR) ? " ferr" : "", - (irqreg & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (irqreg & EPINTR_FIFO_LOW) ? " flow" : "", - (irqreg & EPINTR_MDEVREQ) ? " mreq" : "", - (irqreg & EPINTR_EOF) ? " eof" : "", - (irqreg & EPINTR_DEVREQ) ? " devreq" : "", - (irqreg & EPINTR_EOT) ? " eot" : ""); - } -#else - #define dump_ep_intr(x, y, z, i) do {} while (0) -#endif /* DEBUG_IRQ */ - -#ifdef DEBUG_DUMP - static void dump_usb_stat(const char *label, - struct imx_udc_struct *imx_usb) - { - int temp = __raw_readl(imx_usb->base + USB_STAT); - - dev_dbg(imx_usb->dev, - "<%s> USB_STAT=[%s%s CFG=%d, INTF=%d, ALTR=%d]\n", label, - (temp & STAT_RST) ? " reset" : "", - (temp & STAT_SUSP) ? " suspend" : "", - (temp & STAT_CFG) >> 5, - (temp & STAT_INTF) >> 3, - (temp & STAT_ALTSET)); - } - - static void dump_ep_stat(const char *label, - struct imx_ep_struct *imx_ep) - { - int temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_INTR(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_INTR=[%s%s%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & EPINTR_FIFO_FULL) ? " full" : "", - (temp & EPINTR_FIFO_EMPTY) ? " fempty" : "", - (temp & EPINTR_FIFO_ERROR) ? " ferr" : "", - (temp & EPINTR_FIFO_HIGH) ? " fhigh" : "", - (temp & EPINTR_FIFO_LOW) ? " flow" : "", - (temp & EPINTR_MDEVREQ) ? " mreq" : "", - (temp & EPINTR_EOF) ? " eof" : "", - (temp & EPINTR_DEVREQ) ? " devreq" : "", - (temp & EPINTR_EOT) ? " eot" : ""); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_STAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_STAT=[%s%s bcount=%d]\n", - label, EP_NO(imx_ep), - (temp & EPSTAT_SIP) ? " sip" : "", - (temp & EPSTAT_STALL) ? " stall" : "", - (temp & EPSTAT_BCOUNT) >> 16); - - temp = __raw_readl(imx_ep->imx_usb->base - + USB_EP_FSTAT(EP_NO(imx_ep))); - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> EP%d_FSTAT=[%s%s%s%s%s%s%s]\n", - label, EP_NO(imx_ep), - (temp & FSTAT_ERR) ? " ferr" : "", - (temp & FSTAT_UF) ? " funder" : "", - (temp & FSTAT_OF) ? " fover" : "", - (temp & FSTAT_FR) ? " fready" : "", - (temp & FSTAT_FULL) ? " ffull" : "", - (temp & FSTAT_ALRM) ? " falarm" : "", - (temp & FSTAT_EMPTY) ? " fempty" : ""); - } - - static void dump_req(const char *label, struct imx_ep_struct *imx_ep, - struct usb_request *req) - { - int i; - - if (!req || !req->buf) { - dev_dbg(imx_ep->imx_usb->dev, - "<%s> req or req buf is free\n", label); - return; - } - - if ((!EP_NO(imx_ep) && imx_ep->imx_usb->ep0state - == EP0_IN_DATA_PHASE) - || (EP_NO(imx_ep) && EP_DIR(imx_ep))) { - - dev_dbg(imx_ep->imx_usb->dev, - "<%s> request dump <", label); - for (i = 0; i < req->length; i++) - printk("%02x-", *((u8 *)req->buf + i)); - printk(">\n"); - } - } - -#else - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) -#endif /* DEBUG_DUMP */ - -#ifdef DEBUG_ERR - #define D_ERR(dev, args...) dev_dbg(dev, ## args) -#else - #define D_ERR(dev, args...) do {} while (0) -#endif - -#else - #define D_REQ(dev, args...) do {} while (0) - #define D_TRX(dev, args...) do {} while (0) - #define D_INI(dev, args...) do {} while (0) - #define D_EP0(dev, args...) do {} while (0) - #define D_EPX(dev, args...) do {} while (0) - #define dump_ep_intr(x, y, z, i) do {} while (0) - #define dump_intr(x, y, z) do {} while (0) - #define dump_ep_stat(x, y) do {} while (0) - #define dump_usb_stat(x, y) do {} while (0) - #define dump_req(x, y, z) do {} while (0) - #define D_ERR(dev, args...) do {} while (0) -#endif /* DEBUG */ - -#endif /* __LINUX_USB_GADGET_IMX_H */ diff --git a/drivers/usb/gadget/m66592-udc.c b/drivers/usb/gadget/m66592-udc.c index 46ba9838c3a0..d5f050d30edf 100644 --- a/drivers/usb/gadget/m66592-udc.c +++ b/drivers/usb/gadget/m66592-udc.c @@ -1584,7 +1584,7 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } - if (pdev->dev.platform_data == NULL) { + if (dev_get_platdata(&pdev->dev) == NULL) { dev_err(&pdev->dev, "no platform data\n"); ret = -ENODEV; goto clean_up; @@ -1598,7 +1598,7 @@ static int __init m66592_probe(struct platform_device *pdev) goto clean_up; } - m66592->pdata = pdev->dev.platform_data; + m66592->pdata = dev_get_platdata(&pdev->dev); m66592->irq_trigger = ires->flags & IRQF_TRIGGER_MASK; spin_lock_init(&m66592->lock); diff --git a/drivers/usb/gadget/mv_u3d_core.c b/drivers/usb/gadget/mv_u3d_core.c index ec6a2d290398..bbb6e98c4384 100644 --- a/drivers/usb/gadget/mv_u3d_core.c +++ b/drivers/usb/gadget/mv_u3d_core.c @@ -1109,7 +1109,7 @@ static int mv_u3d_controller_reset(struct mv_u3d *u3d) static int mv_u3d_enable(struct mv_u3d *u3d) { - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); int retval; if (u3d->active) @@ -1138,7 +1138,7 @@ static int mv_u3d_enable(struct mv_u3d *u3d) static void mv_u3d_disable(struct mv_u3d *u3d) { - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); if (u3d->clock_gating && u3d->active) { dev_dbg(u3d->dev, "disable u3d\n"); if (pdata->phy_deinit) @@ -1246,7 +1246,7 @@ static int mv_u3d_start(struct usb_gadget *g, struct usb_gadget_driver *driver) { struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); unsigned long flags; if (u3d->driver) @@ -1277,7 +1277,7 @@ static int mv_u3d_stop(struct usb_gadget *g, struct usb_gadget_driver *driver) { struct mv_u3d *u3d = container_of(g, struct mv_u3d, gadget); - struct mv_usb_platform_data *pdata = u3d->dev->platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(u3d->dev); unsigned long flags; u3d->vbus_valid_detect = 0; @@ -1794,12 +1794,12 @@ static int mv_u3d_remove(struct platform_device *dev) static int mv_u3d_probe(struct platform_device *dev) { struct mv_u3d *u3d = NULL; - struct mv_usb_platform_data *pdata = dev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&dev->dev); int retval = 0; struct resource *r; size_t size; - if (!dev->dev.platform_data) { + if (!dev_get_platdata(&dev->dev)) { dev_err(&dev->dev, "missing platform_data\n"); retval = -ENODEV; goto err_pdata; diff --git a/drivers/usb/gadget/mv_udc_core.c b/drivers/usb/gadget/mv_udc_core.c index c2a57023e467..104cdbea635a 100644 --- a/drivers/usb/gadget/mv_udc_core.c +++ b/drivers/usb/gadget/mv_udc_core.c @@ -2100,7 +2100,7 @@ static int mv_udc_remove(struct platform_device *pdev) static int mv_udc_probe(struct platform_device *pdev) { - struct mv_usb_platform_data *pdata = pdev->dev.platform_data; + struct mv_usb_platform_data *pdata = dev_get_platdata(&pdev->dev); struct mv_udc *udc; int retval = 0; struct resource *r; @@ -2118,7 +2118,7 @@ static int mv_udc_probe(struct platform_device *pdev) } udc->done = &release_done; - udc->pdata = pdev->dev.platform_data; + udc->pdata = dev_get_platdata(&pdev->dev); spin_lock_init(&udc->lock); udc->dev = pdev; diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c index b8ed74a823cb..83957cc225d9 100644 --- a/drivers/usb/gadget/omap_udc.c +++ b/drivers/usb/gadget/omap_udc.c @@ -2734,7 +2734,7 @@ static int omap_udc_probe(struct platform_device *pdev) int hmc; struct usb_phy *xceiv = NULL; const char *type = NULL; - struct omap_usb_config *config = pdev->dev.platform_data; + struct omap_usb_config *config = dev_get_platdata(&pdev->dev); struct clk *dc_clk = NULL; struct clk *hhc_clk = NULL; diff --git a/drivers/usb/gadget/pxa25x_udc.c b/drivers/usb/gadget/pxa25x_udc.c index 95c531d5aa4f..cc9207473dbc 100644 --- a/drivers/usb/gadget/pxa25x_udc.c +++ b/drivers/usb/gadget/pxa25x_udc.c @@ -2117,7 +2117,7 @@ static int __init pxa25x_udc_probe(struct platform_device *pdev) /* other non-static parts of init */ dev->dev = &pdev->dev; - dev->mach = pdev->dev.platform_data; + dev->mach = dev_get_platdata(&pdev->dev); dev->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); diff --git a/drivers/usb/gadget/pxa27x_udc.c b/drivers/usb/gadget/pxa27x_udc.c index 41cea9566ac8..3c97da7760da 100644 --- a/drivers/usb/gadget/pxa27x_udc.c +++ b/drivers/usb/gadget/pxa27x_udc.c @@ -2422,7 +2422,7 @@ static int pxa_udc_probe(struct platform_device *pdev) return udc->irq; udc->dev = &pdev->dev; - udc->mach = pdev->dev.platform_data; + udc->mach = dev_get_platdata(&pdev->dev); udc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); gpio = udc->mach->gpio_pullup; diff --git a/drivers/usb/gadget/r8a66597-udc.c b/drivers/usb/gadget/r8a66597-udc.c index c6af649f3240..68be48d33404 100644 --- a/drivers/usb/gadget/r8a66597-udc.c +++ b/drivers/usb/gadget/r8a66597-udc.c @@ -1910,7 +1910,7 @@ static int __init r8a66597_probe(struct platform_device *pdev) spin_lock_init(&r8a66597->lock); platform_set_drvdata(pdev, r8a66597); - r8a66597->pdata = pdev->dev.platform_data; + r8a66597->pdata = dev_get_platdata(&pdev->dev); r8a66597->irq_sense_low = irq_trigger == IRQF_TRIGGER_LOW; r8a66597->gadget.ops = &r8a66597_gadget_ops; diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index 3e3ea7203030..9575085ded81 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -1142,7 +1142,7 @@ static struct proc_dir_entry *rndis_connect_state [RNDIS_MAX_CONFIGS]; #endif /* CONFIG_USB_GADGET_DEBUG_FILES */ -int rndis_init(void) +static int rndis_init(void) { u8 i; @@ -1176,7 +1176,7 @@ int rndis_init(void) } module_init(rndis_init); -void rndis_exit(void) +static void rndis_exit(void) { #ifdef CONFIG_USB_GADGET_DEBUG_FILES u8 i; diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index af22f24046b2..d69b36a99dbc 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -29,6 +29,7 @@ #include <linux/slab.h> #include <linux/clk.h> #include <linux/regulator/consumer.h> +#include <linux/of_platform.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -3450,7 +3451,7 @@ static void s3c_hsotg_delete_debug(struct s3c_hsotg *hsotg) static int s3c_hsotg_probe(struct platform_device *pdev) { - struct s3c_hsotg_plat *plat = pdev->dev.platform_data; + struct s3c_hsotg_plat *plat = dev_get_platdata(&pdev->dev); struct usb_phy *phy; struct device *dev = &pdev->dev; struct s3c_hsotg_ep *eps; @@ -3469,7 +3470,7 @@ static int s3c_hsotg_probe(struct platform_device *pdev) phy = devm_usb_get_phy(dev, USB_PHY_TYPE_USB2); if (IS_ERR(phy)) { /* Fallback for pdata */ - plat = pdev->dev.platform_data; + plat = dev_get_platdata(&pdev->dev); if (!plat) { dev_err(&pdev->dev, "no platform data or transceiver defined\n"); return -EPROBE_DEFER; @@ -3648,10 +3649,19 @@ static int s3c_hsotg_remove(struct platform_device *pdev) #define s3c_hsotg_resume NULL #endif +#ifdef CONFIG_OF +static const struct of_device_id s3c_hsotg_of_ids[] = { + { .compatible = "samsung,s3c6400-hsotg", }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, s3c_hsotg_of_ids); +#endif + static struct platform_driver s3c_hsotg_driver = { .driver = { .name = "s3c-hsotg", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(s3c_hsotg_of_ids), }, .probe = s3c_hsotg_probe, .remove = s3c_hsotg_remove, diff --git a/drivers/usb/gadget/s3c-hsudc.c b/drivers/usb/gadget/s3c-hsudc.c index b1f0771fbd3d..1a1a41498db2 100644 --- a/drivers/usb/gadget/s3c-hsudc.c +++ b/drivers/usb/gadget/s3c-hsudc.c @@ -1262,7 +1262,7 @@ static int s3c_hsudc_probe(struct platform_device *pdev) struct device *dev = &pdev->dev; struct resource *res; struct s3c_hsudc *hsudc; - struct s3c24xx_hsudc_platdata *pd = pdev->dev.platform_data; + struct s3c24xx_hsudc_platdata *pd = dev_get_platdata(&pdev->dev); int ret, i; hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) + @@ -1275,7 +1275,7 @@ static int s3c_hsudc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dev); hsudc->dev = dev; - hsudc->pd = pdev->dev.platform_data; + hsudc->pd = dev_get_platdata(&pdev->dev); hsudc->transceiver = usb_get_phy(USB_PHY_TYPE_USB2); diff --git a/drivers/usb/gadget/s3c2410_udc.c b/drivers/usb/gadget/s3c2410_udc.c index 09c4f70c93c4..c72d810e6b36 100644 --- a/drivers/usb/gadget/s3c2410_udc.c +++ b/drivers/usb/gadget/s3c2410_udc.c @@ -1809,7 +1809,7 @@ static int s3c2410_udc_probe(struct platform_device *pdev) } spin_lock_init(&udc->lock); - udc_info = pdev->dev.platform_data; + udc_info = dev_get_platdata(&pdev->dev); rsrc_start = S3C2410_PA_USBDEV; rsrc_len = S3C24XX_SZ_USBDEV; diff --git a/drivers/usb/gadget/u_uac1.c b/drivers/usb/gadget/u_uac1.c index c7d460f43390..7a55fea43430 100644 --- a/drivers/usb/gadget/u_uac1.c +++ b/drivers/usb/gadget/u_uac1.c @@ -191,7 +191,7 @@ try_again: frames = bytes_to_frames(runtime, count); old_fs = get_fs(); set_fs(KERNEL_DS); - result = snd_pcm_lib_write(snd->substream, buf, frames); + result = snd_pcm_lib_write(snd->substream, (void __user *)buf, frames); if (result != frames) { ERROR(card, "Playback error: %d\n", (int)result); set_fs(old_fs); diff --git a/drivers/usb/gadget/udc-core.c b/drivers/usb/gadget/udc-core.c index 13e25f80fc20..546bfda3059a 100644 --- a/drivers/usb/gadget/udc-core.c +++ b/drivers/usb/gadget/udc-core.c @@ -23,6 +23,7 @@ #include <linux/list.h> #include <linux/err.h> #include <linux/dma-mapping.h> +#include <linux/workqueue.h> #include <linux/usb/ch9.h> #include <linux/usb/gadget.h> @@ -105,11 +106,18 @@ EXPORT_SYMBOL_GPL(usb_gadget_unmap_request); /* ------------------------------------------------------------------------- */ +static void usb_gadget_state_work(struct work_struct *work) +{ + struct usb_gadget *gadget = work_to_gadget(work); + + sysfs_notify(&gadget->dev.kobj, NULL, "state"); +} + void usb_gadget_set_state(struct usb_gadget *gadget, enum usb_device_state state) { gadget->state = state; - sysfs_notify(&gadget->dev.kobj, NULL, "state"); + schedule_work(&gadget->work); } EXPORT_SYMBOL_GPL(usb_gadget_set_state); @@ -196,6 +204,7 @@ int usb_add_gadget_udc_release(struct device *parent, struct usb_gadget *gadget, goto err1; dev_set_name(&gadget->dev, "gadget"); + INIT_WORK(&gadget->work, usb_gadget_state_work); gadget->dev.parent = parent; #ifdef CONFIG_HAS_DMA @@ -315,6 +324,7 @@ found: usb_gadget_remove_driver(udc); kobject_uevent(&udc->dev.kobj, KOBJ_REMOVE); + flush_work(&gadget->work); device_unregister(&udc->dev); device_unregister(&gadget->dev); } diff --git a/drivers/usb/gadget/uvc_queue.c b/drivers/usb/gadget/uvc_queue.c index e6170478ea9f..0bb5d50075de 100644 --- a/drivers/usb/gadget/uvc_queue.c +++ b/drivers/usb/gadget/uvc_queue.c @@ -193,12 +193,16 @@ static int uvc_queue_buffer(struct uvc_video_queue *queue, mutex_lock(&queue->mutex); ret = vb2_qbuf(&queue->queue, buf); + if (ret < 0) + goto done; + spin_lock_irqsave(&queue->irqlock, flags); ret = (queue->flags & UVC_QUEUE_PAUSED) != 0; queue->flags &= ~UVC_QUEUE_PAUSED; spin_unlock_irqrestore(&queue->irqlock, flags); - mutex_unlock(&queue->mutex); +done: + mutex_unlock(&queue->mutex); return ret; } |