From: Guennadi Liakhovetski <lg@xxxxxxx>
This patch adds support for i.MX3x (only tested with i.MX31 so far) ARM
SoCs to the fsl_usb2_udc driver. It also moves PHY configuration before
controller reset, because otherwise an ULPI PHY doesn't get a reset and
doesn't function after a reboot. The problem with longer control transfers
is still not fixed. The patch renames the fsl_usb2_udc.c file to
fsl_udc_core.c to preserve the same module name for user-space
backwards compatibility.
Signed-off-by: Guennadi Liakhovetski <lg@xxxxxxx>
---
Greg, on your request a GNU diff. The two patches in this series will not
break compilation, so, can be applied independently.
drivers/usb/gadget/Kconfig | 2 +-
drivers/usb/gadget/Makefile | 4 +
drivers/usb/gadget/fsl_mx3_udc.c | 95 ++
drivers/usb/gadget/fsl_udc_core.c | 2491 +++++++++++++++++++++++++++++++++++++
drivers/usb/gadget/fsl_usb2_udc.c | 2468 ------------------------------------
drivers/usb/gadget/fsl_usb2_udc.h | 18 +
6 files changed, 2609 insertions(+), 2469 deletions(-)
create mode 100644 drivers/usb/gadget/fsl_mx3_udc.c
create mode 100644 drivers/usb/gadget/fsl_udc_core.c
delete mode 100644 drivers/usb/gadget/fsl_usb2_udc.c
diff --git a/drivers/usb/gadget/Kconfig b/drivers/usb/gadget/Kconfig
index 080bb1e..5085aeb 100644
--- a/drivers/usb/gadget/Kconfig
+++ b/drivers/usb/gadget/Kconfig
@@ -156,7 +156,7 @@ config USB_ATMEL_USBA
config USB_GADGET_FSL_USB2
boolean "Freescale Highspeed USB DR Peripheral Controller"
- depends on FSL_SOC
+ depends on FSL_SOC || ARCH_MXC
select USB_GADGET_DUALSPEED
help
Some of Freescale PowerPC processors have a High Speed
diff --git a/drivers/usb/gadget/Makefile b/drivers/usb/gadget/Makefile
index 39a51d7..c3fe063 100644
--- a/drivers/usb/gadget/Makefile
+++ b/drivers/usb/gadget/Makefile
@@ -18,6 +18,10 @@ obj-$(CONFIG_USB_S3C2410) += s3c2410_udc.o
obj-$(CONFIG_USB_AT91) += at91_udc.o
obj-$(CONFIG_USB_ATMEL_USBA) += atmel_usba_udc.o
obj-$(CONFIG_USB_FSL_USB2) += fsl_usb2_udc.o
+fsl_usb2_udc-objs := fsl_udc_core.o
+ifeq ($(CONFIG_ARCH_MXC),y)
+fsl_usb2_udc-objs += fsl_mx3_udc.o
+endif
obj-$(CONFIG_USB_M66592) += m66592-udc.o
obj-$(CONFIG_USB_FSL_QE) += fsl_qe_udc.o
obj-$(CONFIG_USB_CI13XXX) += ci13xxx_udc.o
diff --git a/drivers/usb/gadget/fsl_mx3_udc.c b/drivers/usb/gadget/fsl_mx3_udc.c
new file mode 100644
index 0000000..4bc2bf3
--- /dev/null
+++ b/drivers/usb/gadget/fsl_mx3_udc.c
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2009
+ * Guennadi Liakhovetski, DENX Software Engineering, <lg@xxxxxxx>
+ *
+ * Description:
+ * Helper routines for i.MX3x SoCs from Freescale, needed by the fsl_usb2_udc.c
+ * driver to function correctly on these systems.
+ *
+ * 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.
+ */
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/fsl_devices.h>
+#include <linux/platform_device.h>
+
+static struct clk *mxc_ahb_clk;
+static struct clk *mxc_usb_clk;
+
+int fsl_udc_clk_init(struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata;
+ unsigned long freq;
+ int ret;
+
+ pdata = pdev->dev.platform_data;
+
+ mxc_ahb_clk = clk_get(&pdev->dev, "usb_ahb");
+ if (IS_ERR(mxc_ahb_clk))
+ return PTR_ERR(mxc_ahb_clk);
+
+ ret = clk_enable(mxc_ahb_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "clk_enable(\"usb_ahb\") failed\n");
+ goto eenahb;
+ }
+
+ /* make sure USB_CLK is running at 60 MHz +/- 1000 Hz */
+ mxc_usb_clk = clk_get(&pdev->dev, "usb");
+ if (IS_ERR(mxc_usb_clk)) {
+ dev_err(&pdev->dev, "clk_get(\"usb\") failed\n");
+ ret = PTR_ERR(mxc_usb_clk);
+ goto egusb;
+ }
+
+ freq = clk_get_rate(mxc_usb_clk);
+ if (pdata->phy_mode != FSL_USB2_PHY_ULPI &&
+ (freq < 59999000 || freq > 60001000)) {
+ dev_err(&pdev->dev, "USB_CLK=%lu, should be 60MHz\n", freq);
+ goto eclkrate;
+ }
+
+ ret = clk_enable(mxc_usb_clk);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "clk_enable(\"usb_clk\") failed\n");
+ goto eenusb;
+ }
+
+ return 0;
+
+eenusb:
+eclkrate:
+ clk_put(mxc_usb_clk);
+ mxc_usb_clk = NULL;
+egusb:
+ clk_disable(mxc_ahb_clk);
+eenahb:
+ clk_put(mxc_ahb_clk);
+ return ret;
+}
+
+void fsl_udc_clk_finalize(struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata = pdev->dev.platform_data;
+
+ /* ULPI transceivers don't need usbpll */
+ if (pdata->phy_mode == FSL_USB2_PHY_ULPI) {
+ clk_disable(mxc_usb_clk);
+ clk_put(mxc_usb_clk);
+ mxc_usb_clk = NULL;
+ }
+}
+
+void fsl_udc_clk_release(void)
+{
+ if (mxc_usb_clk) {
+ clk_disable(mxc_usb_clk);
+ clk_put(mxc_usb_clk);
+ }
+ clk_disable(mxc_ahb_clk);
+ clk_put(mxc_ahb_clk);
+}
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
new file mode 100644
index 0000000..42a74b8
--- /dev/null
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -0,0 +1,2491 @@
+/*
+ * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved.
+ *
+ * Author: Li Yang <leoli@xxxxxxxxxxxxx>
+ * Jiang Bo <tanya.jiang@xxxxxxxxxxxxx>
+ *
+ * Description:
+ * Freescale high-speed USB SOC DR module device controller driver.
+ * This can be found on MPC8349E/MPC8313E cpus.
+ * The driver is previously named as mpc_udc. Based on bare board
+ * code from Dave Liu and Shlomi Gridish.
+ *
+ * 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.
+ */
+
+#undef VERBOSE
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/ioport.h>
+#include <linux/types.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/list.h>
+#include <linux/interrupt.h>
+#include <linux/proc_fs.h>
+#include <linux/mm.h>
+#include <linux/moduleparam.h>
+#include <linux/device.h>
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+#include <linux/usb/otg.h>
+#include <linux/dma-mapping.h>
+#include <linux/platform_device.h>
+#include <linux/fsl_devices.h>
+#include <linux/dmapool.h>
+#include <linux/delay.h>
+
+#include <asm/byteorder.h>
+#include <asm/io.h>
+#include <asm/system.h>
+#include <asm/unaligned.h>
+#include <asm/dma.h>
+
+#include "fsl_usb2_udc.h"
+
+#define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller driver"
+#define DRIVER_AUTHOR "Li Yang/Jiang Bo"
+#define DRIVER_VERSION "Apr 20, 2007"
+
+#define DMA_ADDR_INVALID (~(dma_addr_t)0)
+
+static const char driver_name[] = "fsl-usb2-udc";
+static const char driver_desc[] = DRIVER_DESC;
+
+static struct usb_dr_device *dr_regs;
+#ifndef CONFIG_ARCH_MXC
+static struct usb_sys_interface *usb_sys_regs;
+#endif
+
+/* it is initialized in probe() */
+static struct fsl_udc *udc_controller = NULL;
+
+static const struct usb_endpoint_descriptor
+fsl_ep0_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+ .bEndpointAddress = 0,
+ .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
+ .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
+};
+
+static void fsl_ep_fifo_flush(struct usb_ep *_ep);
+
+#ifdef CONFIG_PPC32
+#define fsl_readl(addr) in_le32(addr)
+#define fsl_writel(val32, addr) out_le32(addr, val32)
+#else
+#define fsl_readl(addr) readl(addr)
+#define fsl_writel(val32, addr) writel(val32, addr)
+#endif
+
+/********************************************************************
+ * Internal Used Function
+********************************************************************/
+/*-----------------------------------------------------------------
+ * done() - retire a request; caller blocked irqs
+ * @status : request status to be set, only works when
+ * request is still in progress.
+ *--------------------------------------------------------------*/
+static void done(struct fsl_ep *ep, struct fsl_req *req, int status)
+{
+ struct fsl_udc *udc = NULL;
+ unsigned char stopped = ep->stopped;
+ struct ep_td_struct *curr_td, *next_td;
+ int j;
+
+ udc = (struct fsl_udc *)ep->udc;
+ /* Removed the req from fsl_ep->queue */
+ list_del_init(&req->queue);
+
+ /* req.status should be set as -EINPROGRESS in ep_queue() */
+ if (req->req.status == -EINPROGRESS)
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ /* Free dtd for the request */
+ next_td = req->head;
+ for (j = 0; j < req->dtd_count; j++) {
+ curr_td = next_td;
+ if (j != req->dtd_count - 1) {
+ next_td = curr_td->next_td_virt;
+ }
+ dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma);
+ }
+
+ if (req->mapped) {
+ dma_unmap_single(ep->udc->gadget.dev.parent,
+ req->req.dma, req->req.length,
+ ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+ req->req.dma = DMA_ADDR_INVALID;
+ req->mapped = 0;
+ } else
+ dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
+ req->req.dma, req->req.length,
+ ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+
+ if (status && (status != -ESHUTDOWN))
+ VDBG("complete %s req %p stat %d len %u/%u",
+ ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length);
+
+ ep->stopped = 1;
+
+ spin_unlock(&ep->udc->lock);
+ /* complete() is from gadget layer,
+ * eg fsg->bulk_in_complete() */
+ if (req->req.complete)
+ req->req.complete(&ep->ep, &req->req);
+
+ spin_lock(&ep->udc->lock);
+ ep->stopped = stopped;
+}
+
+/*-----------------------------------------------------------------
+ * nuke(): delete all requests related to this ep
+ * called with spinlock held
+ *--------------------------------------------------------------*/
+static void nuke(struct fsl_ep *ep, int status)
+{
+ ep->stopped = 1;
+
+ /* Flush fifo */
+ fsl_ep_fifo_flush(&ep->ep);
+
+ /* Whether this eq has request linked */
+ while (!list_empty(&ep->queue)) {
+ struct fsl_req *req = NULL;
+
+ req = list_entry(ep->queue.next, struct fsl_req, queue);
+ done(ep, req, status);
+ }
+}
+
+/*------------------------------------------------------------------
+ Internal Hardware related function
+ ------------------------------------------------------------------*/
+
+static int dr_controller_setup(struct fsl_udc *udc)
+{
+ unsigned int tmp, portctrl;
+#ifndef CONFIG_ARCH_MXC
+ unsigned int ctrl;
+#endif
+ unsigned long timeout;
+#define FSL_UDC_RESET_TIMEOUT 1000
+
+ /* Config PHY interface */
+ portctrl = fsl_readl(&dr_regs->portsc1);
+ portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH);
+ switch (udc->phy_mode) {
+ case FSL_USB2_PHY_ULPI:
+ portctrl |= PORTSCX_PTS_ULPI;
+ break;
+ case FSL_USB2_PHY_UTMI_WIDE:
+ portctrl |= PORTSCX_PTW_16BIT;
+ /* fall through */
+ case FSL_USB2_PHY_UTMI:
+ portctrl |= PORTSCX_PTS_UTMI;
+ break;
+ case FSL_USB2_PHY_SERIAL:
+ portctrl |= PORTSCX_PTS_FSLS;
+ break;
+ default:
+ return -EINVAL;
+ }
+ fsl_writel(portctrl, &dr_regs->portsc1);
+
+ /* Stop and reset the usb controller */
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp &= ~USB_CMD_RUN_STOP;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp |= USB_CMD_CTRL_RESET;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ /* Wait for reset to complete */
+ timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
+ while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
+ if (time_after(jiffies, timeout)) {
+ ERR("udc reset timeout!\n");
+ return -ETIMEDOUT;
+ }
+ cpu_relax();
+ }
+
+ /* Set the controller as device mode */
+ tmp = fsl_readl(&dr_regs->usbmode);
+ tmp |= USB_MODE_CTRL_MODE_DEVICE;
+ /* Disable Setup Lockout */
+ tmp |= USB_MODE_SETUP_LOCK_OFF;
+ fsl_writel(tmp, &dr_regs->usbmode);
+
+ /* Clear the setup status */
+ fsl_writel(0, &dr_regs->usbsts);
+
+ tmp = udc->ep_qh_dma;
+ tmp &= USB_EP_LIST_ADDRESS_MASK;
+ fsl_writel(tmp, &dr_regs->endpointlistaddr);
+
+ VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x",
+ udc->ep_qh, (int)tmp,
+ fsl_readl(&dr_regs->endpointlistaddr));
+
+ /* Config control enable i/o output, cpu endian register */
+#ifndef CONFIG_ARCH_MXC
+ ctrl = __raw_readl(&usb_sys_regs->control);
+ ctrl |= USB_CTRL_IOENB;
+ __raw_writel(ctrl, &usb_sys_regs->control);
+#endif
+
+#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
+ /* Turn on cache snooping hardware, since some PowerPC platforms
+ * wholly rely on hardware to deal with cache coherent. */
+
+ /* Setup Snooping for all the 4GB space */
+ tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */
+ __raw_writel(tmp, &usb_sys_regs->snoop1);
+ tmp |= 0x80000000; /* starts from 0x8000000, size 2G */
+ __raw_writel(tmp, &usb_sys_regs->snoop2);
+#endif
+
+ return 0;
+}
+
+/* Enable DR irq and set controller to run state */
+static void dr_controller_run(struct fsl_udc *udc)
+{
+ u32 temp;
+
+ /* Enable DR irq reg */
+ temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN
+ | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN
+ | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
+
+ fsl_writel(temp, &dr_regs->usbintr);
+
+ /* Clear stopped bit */
+ udc->stopped = 0;
+
+ /* Set the controller as device mode */
+ temp = fsl_readl(&dr_regs->usbmode);
+ temp |= USB_MODE_CTRL_MODE_DEVICE;
+ fsl_writel(temp, &dr_regs->usbmode);
+
+ /* Set controller to Run */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ temp |= USB_CMD_RUN_STOP;
+ fsl_writel(temp, &dr_regs->usbcmd);
+
+ return;
+}
+
+static void dr_controller_stop(struct fsl_udc *udc)
+{
+ unsigned int tmp;
+
+ /* disable all INTR */
+ fsl_writel(0, &dr_regs->usbintr);
+
+ /* Set stopped bit for isr */
+ udc->stopped = 1;
+
+ /* disable IO output */
+/* usb_sys_regs->control = 0; */
+
+ /* set controller to Stop */
+ tmp = fsl_readl(&dr_regs->usbcmd);
+ tmp &= ~USB_CMD_RUN_STOP;
+ fsl_writel(tmp, &dr_regs->usbcmd);
+
+ return;
+}
+
+static void dr_ep_setup(unsigned char ep_num, unsigned char dir,
+ unsigned char ep_type)
+{
+ unsigned int tmp_epctrl = 0;
+
+ tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (dir) {
+ if (ep_num)
+ tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+ tmp_epctrl |= EPCTRL_TX_ENABLE;
+ tmp_epctrl |= ((unsigned int)(ep_type)
+ << EPCTRL_TX_EP_TYPE_SHIFT);
+ } else {
+ if (ep_num)
+ tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+ tmp_epctrl |= EPCTRL_RX_ENABLE;
+ tmp_epctrl |= ((unsigned int)(ep_type)
+ << EPCTRL_RX_EP_TYPE_SHIFT);
+ }
+
+ fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+static void
+dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value)
+{
+ u32 tmp_epctrl = 0;
+
+ tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+
+ if (value) {
+ /* set the stall bit */
+ if (dir)
+ tmp_epctrl |= EPCTRL_TX_EP_STALL;
+ else
+ tmp_epctrl |= EPCTRL_RX_EP_STALL;
+ } else {
+ /* clear the stall bit and reset data toggle */
+ if (dir) {
+ tmp_epctrl &= ~EPCTRL_TX_EP_STALL;
+ tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
+ } else {
+ tmp_epctrl &= ~EPCTRL_RX_EP_STALL;
+ tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
+ }
+ }
+ fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
+}
+
+/* Get stall status of a specific ep
+ Return: 0: not stalled; 1:stalled */
+static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir)
+{
+ u32 epctrl;
+
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (dir)
+ return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0;
+ else
+ return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0;
+}
+
+/********************************************************************
+ Internal Structure Build up functions
+********************************************************************/
+
+/*------------------------------------------------------------------
+* struct_ep_qh_setup(): set the Endpoint Capabilites field of QH
+ * @zlt: Zero Length Termination Select (1: disable; 0: enable)
+ * @mult: Mult field
+ ------------------------------------------------------------------*/
+static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
+ unsigned char dir, unsigned char ep_type,
+ unsigned int max_pkt_len,
+ unsigned int zlt, unsigned char mult)
+{
+ struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir];
+ unsigned int tmp = 0;
+
+ /* set the Endpoint Capabilites in QH */
+ switch (ep_type) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ /* Interrupt On Setup (IOS). for control ep */
+ tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+ | EP_QUEUE_HEAD_IOS;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
+ | (mult << EP_QUEUE_HEAD_MULT_POS);
+ break;
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
+ break;
+ default:
+ VDBG("error ep type is %d", ep_type);
+ return;
+ }
+ if (zlt)
+ tmp |= EP_QUEUE_HEAD_ZLT_SEL;
+
+ p_QH->max_pkt_length = cpu_to_le32(tmp);
+ p_QH->next_dtd_ptr = 1;
+ p_QH->size_ioc_int_sts = 0;
+
+ return;
+}
+
+/* Setup qh structure and ep register for ep0. */
+static void ep0_setup(struct fsl_udc *udc)
+{
+ /* the intialization of an ep includes: fields in QH, Regs,
+ * fsl_ep struct */
+ struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL,
+ USB_MAX_CTRL_PAYLOAD, 0, 0);
+ struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL,
+ USB_MAX_CTRL_PAYLOAD, 0, 0);
+ dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL);
+ dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL);
+
+ return;
+
+}
+
+/***********************************************************************
+ Endpoint Management Functions
+***********************************************************************/
+
+/*-------------------------------------------------------------------------
+ * when configurations are set, or when interface settings change
+ * for example the do_set_interface() in gadget layer,
+ * the driver will enable or disable the relevant endpoints
+ * ep0 doesn't use this routine. It is always enabled.
+-------------------------------------------------------------------------*/
+static int fsl_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct fsl_udc *udc = NULL;
+ struct fsl_ep *ep = NULL;
+ unsigned short max = 0;
+ unsigned char mult = 0, zlt;
+ int retval = -EINVAL;
+ unsigned long flags = 0;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+
+ /* catch various bogus parameters */
+ if (!_ep || !desc || ep->desc
+ || (desc->bDescriptorType != USB_DT_ENDPOINT))
+ return -EINVAL;
+
+ udc = ep->udc;
+
+ if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
+ return -ESHUTDOWN;
+
+ max = le16_to_cpu(desc->wMaxPacketSize);
+
+ /* Disable automatic zlp generation. Driver is reponsible to indicate
+ * explicitly through req->req.zero. This is needed to enable multi-td
+ * request. */
+ zlt = 1;
+
+ /* Assume the max packet size from gadget is always correct */
+ switch (desc->bmAttributes & 0x03) {
+ case USB_ENDPOINT_XFER_CONTROL:
+ case USB_ENDPOINT_XFER_BULK:
+ case USB_ENDPOINT_XFER_INT:
+ /* mult = 0. Execute N Transactions as demonstrated by
+ * the USB variable length packet protocol where N is
+ * computed using the Maximum Packet Length (dQH) and
+ * the Total Bytes field (dTD) */
+ mult = 0;
+ break;
+ case USB_ENDPOINT_XFER_ISOC:
+ /* Calculate transactions needed for high bandwidth iso */
+ mult = (unsigned char)(1 + ((max >> 11) & 0x03));
+ max = max & 0x8ff; /* bit 0~10 */
+ /* 3 transactions at most */
+ if (mult > 3)
+ goto en_done;
+ break;
+ default:
+ goto en_done;
+ }
+
+ spin_lock_irqsave(&udc->lock, flags);
+ ep->ep.maxpacket = max;
+ ep->desc = desc;
+ ep->stopped = 0;
+
+ /* Controller related setup */
+ /* Init EPx Queue Head (Ep Capabilites field in QH
+ * according to max, zlt, mult) */
+ struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
+ (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ ? USB_SEND : USB_RECV),
+ (unsigned char) (desc->bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK),
+ max, zlt, mult);
+
+ /* Init endpoint ctrl register */
+ dr_ep_setup((unsigned char) ep_index(ep),
+ (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
+ ? USB_SEND : USB_RECV),
+ (unsigned char) (desc->bmAttributes
+ & USB_ENDPOINT_XFERTYPE_MASK));
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+ retval = 0;
+
+ VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
+ ep->desc->bEndpointAddress & 0x0f,
+ (desc->bEndpointAddress & USB_DIR_IN)
+ ? "in" : "out", max);
+en_done:
+ return retval;
+}
+
+/*---------------------------------------------------------------------
+ * @ep : the ep being unconfigured. May not be ep0
+ * Any pending and uncomplete req will complete with status (-ESHUTDOWN)
+*---------------------------------------------------------------------*/
+static int fsl_ep_disable(struct usb_ep *_ep)
+{
+ struct fsl_udc *udc = NULL;
+ struct fsl_ep *ep = NULL;
+ unsigned long flags = 0;
+ u32 epctrl;
+ int ep_num;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+ if (!_ep || !ep->desc) {
+ VDBG("%s not enabled", _ep ? ep->ep.name : NULL);
+ return -EINVAL;
+ }
+
+ /* disable ep on controller */
+ ep_num = ep_index(ep);
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl &= ~EPCTRL_TX_ENABLE;
+ else
+ epctrl &= ~EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+ udc = (struct fsl_udc *)ep->udc;
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* nuke all pending requests (does flush) */
+ nuke(ep, -ESHUTDOWN);
+
+ ep->desc = NULL;
+ ep->stopped = 1;
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ VDBG("disabled %s OK", _ep->name);
+ return 0;
+}
+
+/*---------------------------------------------------------------------
+ * allocate a request object used by this endpoint
+ * the main operation is to insert the req->queue to the eq->queue
+ * Returns the request, or null if one could not be allocated
+*---------------------------------------------------------------------*/
+static struct usb_request *
+fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
+{
+ struct fsl_req *req = NULL;
+
+ req = kzalloc(sizeof *req, gfp_flags);
+ if (!req)
+ return NULL;
+
+ req->req.dma = DMA_ADDR_INVALID;
+ INIT_LIST_HEAD(&req->queue);
+
+ return &req->req;
+}
+
+static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct fsl_req *req = NULL;
+
+ req = container_of(_req, struct fsl_req, req);
+
+ if (_req)
+ kfree(req);
+}
+
+/*-------------------------------------------------------------------------*/
+static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
+{
+ int i = ep_index(ep) * 2 + ep_is_in(ep);
+ u32 temp, bitmask, tmp_stat;
+ struct ep_queue_head *dQH = &ep->udc->ep_qh[i];
+
+ /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr);
+ VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */
+
+ bitmask = ep_is_in(ep)
+ ? (1 << (ep_index(ep) + 16))
+ : (1 << (ep_index(ep)));
+
+ /* check if the pipe is empty */
+ if (!(list_empty(&ep->queue))) {
+ /* Add td to the end */
+ struct fsl_req *lastreq;
+ lastreq = list_entry(ep->queue.prev, struct fsl_req, queue);
+ lastreq->tail->next_td_ptr =
+ cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK);
+ /* Read prime bit, if 1 goto done */
+ if (fsl_readl(&dr_regs->endpointprime) & bitmask)
+ goto out;
+
+ do {
+ /* Set ATDTW bit in USBCMD */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+ /* Read correct status bit */
+ tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask;
+
+ } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW));
+
+ /* Write ATDTW bit to 0 */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd);
+
+ if (tmp_stat)
+ goto out;
+ }
+
+ /* Write dQH next pointer and terminate bit to 0 */
+ temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK;
+ dQH->next_dtd_ptr = cpu_to_le32(temp);
+
+ /* Clear active and halt bit */
+ temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE
+ | EP_QUEUE_HEAD_STATUS_HALT));
+ dQH->size_ioc_int_sts &= temp;
+
+ /* Ensure that updates to the QH will occure before priming. */
+ wmb();
+
+ /* Prime endpoint by writing 1 to ENDPTPRIME */
+ temp = ep_is_in(ep)
+ ? (1 << (ep_index(ep) + 16))
+ : (1 << (ep_index(ep)));
+ fsl_writel(temp, &dr_regs->endpointprime);
+out:
+ return;
+}
+
+/* Fill in the dTD structure
+ * @req: request that the transfer belongs to
+ * @length: return actually data length of the dTD
+ * @dma: return dma address of the dTD
+ * @is_last: return flag if it is the last dTD of the request
+ * return: pointer to the built dTD */
+static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
+ dma_addr_t *dma, int *is_last)
+{
+ u32 swap_temp;
+ struct ep_td_struct *dtd;
+
+ /* how big will this transfer be? */
+ *length = min(req->req.length - req->req.actual,
+ (unsigned)EP_MAX_LENGTH_TRANSFER);
+
+ dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
+ if (dtd == NULL)
+ return dtd;
+
+ dtd->td_dma = *dma;
+ /* Clear reserved field */
+ swap_temp = cpu_to_le32(dtd->size_ioc_sts);
+ swap_temp &= ~DTD_RESERVED_FIELDS;
+ dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+ /* Init all of buffer page pointers */
+ swap_temp = (u32) (req->req.dma + req->req.actual);
+ dtd->buff_ptr0 = cpu_to_le32(swap_temp);
+ dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000);
+ dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000);
+ dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000);
+ dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000);
+
+ req->req.actual += *length;
+
+ /* zlp is needed if req->req.zero is set */
+ if (req->req.zero) {
+ if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
+ *is_last = 1;
+ else
+ *is_last = 0;
+ } else if (req->req.length == req->req.actual)
+ *is_last = 1;
+ else
+ *is_last = 0;
+
+ if ((*is_last) == 0)
+ VDBG("multi-dtd request!");
+ /* Fill in the transfer size; set active bit */
+ swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
+
+ /* Enable interrupt for the last dtd of a request */
+ if (*is_last && !req->req.no_interrupt)
+ swap_temp |= DTD_IOC;
+
+ dtd->size_ioc_sts = cpu_to_le32(swap_temp);
+
+ mb();
+
+ VDBG("length = %d address= 0x%x", *length, (int)*dma);
+
+ return dtd;
+}
+
+/* Generate dtd chain for a request */
+static int fsl_req_to_dtd(struct fsl_req *req)
+{
+ unsigned count;
+ int is_last;
+ int is_first =1;
+ struct ep_td_struct *last_dtd = NULL, *dtd;
+ dma_addr_t dma;
+
+ do {
+ dtd = fsl_build_dtd(req, &count, &dma, &is_last);
+ if (dtd == NULL)
+ return -ENOMEM;
+
+ if (is_first) {
+ is_first = 0;
+ req->head = dtd;
+ } else {
+ last_dtd->next_td_ptr = cpu_to_le32(dma);
+ last_dtd->next_td_virt = dtd;
+ }
+ last_dtd = dtd;
+
+ req->dtd_count++;
+ } while (!is_last);
+
+ dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE);
+
+ req->tail = dtd;
+
+ return 0;
+}
+
+/* queues (submits) an I/O request to an endpoint */
+static int
+fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
+{
+ struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+ struct fsl_req *req = container_of(_req, struct fsl_req, req);
+ struct fsl_udc *udc;
+ unsigned long flags;
+ int is_iso = 0;
+
+ /* catch various bogus parameters */
+ if (!_req || !req->req.complete || !req->req.buf
+ || !list_empty(&req->queue)) {
+ VDBG("%s, bad params", __func__);
+ return -EINVAL;
+ }
+ if (unlikely(!_ep || !ep->desc)) {
+ VDBG("%s, bad ep", __func__);
+ return -EINVAL;
+ }
+ if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ if (req->req.length > ep->ep.maxpacket)
+ return -EMSGSIZE;
+ is_iso = 1;
+ }
+
+ udc = ep->udc;
+ if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
+ return -ESHUTDOWN;
+
+ req->ep = ep;
+
+ /* map virtual address to hardware */
+ if (req->req.dma == DMA_ADDR_INVALID) {
+ req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
+ req->req.buf,
+ req->req.length, ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+ req->mapped = 1;
+ } else {
+ dma_sync_single_for_device(ep->udc->gadget.dev.parent,
+ req->req.dma, req->req.length,
+ ep_is_in(ep)
+ ? DMA_TO_DEVICE
+ : DMA_FROM_DEVICE);
+ req->mapped = 0;
+ }
+
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->dtd_count = 0;
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* build dtds and push them to device queue */
+ if (!fsl_req_to_dtd(req)) {
+ fsl_queue_td(ep, req);
+ } else {
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return -ENOMEM;
+ }
+
+ /* Update ep0 state */
+ if ((ep_index(ep) == 0))
+ udc->ep0_state = DATA_STATE_XMIT;
+
+ /* irq handler advances the queue */
+ if (req != NULL)
+ list_add_tail(&req->queue, &ep->queue);
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ return 0;
+}
+
+/* dequeues (cancels, unlinks) an I/O request from an endpoint */
+static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
+ struct fsl_req *req;
+ unsigned long flags;
+ int ep_num, stopped, ret = 0;
+ u32 epctrl;
+
+ if (!_ep || !_req)
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->udc->lock, flags);
+ stopped = ep->stopped;
+
+ /* Stop the ep before we deal with the queue */
+ ep->stopped = 1;
+ ep_num = ep_index(ep);
+ epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl &= ~EPCTRL_TX_ENABLE;
+ else
+ epctrl &= ~EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+
+ /* make sure it's actually queued on this endpoint */
+ list_for_each_entry(req, &ep->queue, queue) {
+ if (&req->req == _req)
+ break;
+ }
+ if (&req->req != _req) {
+ ret = -EINVAL;
+ goto out;
+ }
+
+ /* The request is in progress, or completed but not dequeued */
+ if (ep->queue.next == &req->queue) {
+ _req->status = -ECONNRESET;
+ fsl_ep_fifo_flush(_ep); /* flush current transfer */
+
+ /* The request isn't the last request in this ep queue */
+ if (req->queue.next != &ep->queue) {
+ struct ep_queue_head *qh;
+ struct fsl_req *next_req;
+
+ qh = ep->qh;
+ next_req = list_entry(req->queue.next, struct fsl_req,
+ queue);
+
+ /* Point the QH to the first TD of next request */
+ fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr);
+ }
+
+ /* The request hasn't been processed, patch up the TD chain */
+ } else {
+ struct fsl_req *prev_req;
+
+ prev_req = list_entry(req->queue.prev, struct fsl_req, queue);
+ fsl_writel(fsl_readl(&req->tail->next_td_ptr),
+ &prev_req->tail->next_td_ptr);
+
+ }
+
+ done(ep, req, -ECONNRESET);
+
+ /* Enable EP */
+out: epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
+ if (ep_is_in(ep))
+ epctrl |= EPCTRL_TX_ENABLE;
+ else
+ epctrl |= EPCTRL_RX_ENABLE;
+ fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
+ ep->stopped = stopped;
+
+ spin_unlock_irqrestore(&ep->udc->lock, flags);
+ return ret;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*-----------------------------------------------------------------
+ * modify the endpoint halt feature
+ * @ep: the non-isochronous endpoint being stalled
+ * @value: 1--set halt 0--clear halt
+ * Returns zero, or a negative error code.
+*----------------------------------------------------------------*/
+static int fsl_ep_set_halt(struct usb_ep *_ep, int value)
+{
+ struct fsl_ep *ep = NULL;
+ unsigned long flags = 0;
+ int status = -EOPNOTSUPP; /* operation not supported */
+ unsigned char ep_dir = 0, ep_num = 0;
+ struct fsl_udc *udc = NULL;
+
+ ep = container_of(_ep, struct fsl_ep, ep);
+ udc = ep->udc;
+ if (!_ep || !ep->desc) {
+ status = -EINVAL;
+ goto out;
+ }
+
+ if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
+ status = -EOPNOTSUPP;
+ goto out;
+ }
+
+ /* Attempt to halt IN ep will fail if any transfer requests
+ * are still queue */
+ if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
+ status = -EAGAIN;
+ goto out;
+ }
+
+ status = 0;
+ ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+ ep_num = (unsigned char)(ep_index(ep));
+ spin_lock_irqsave(&ep->udc->lock, flags);
+ dr_ep_change_stall(ep_num, ep_dir, value);
+ spin_unlock_irqrestore(&ep->udc->lock, flags);
+
+ if (ep_index(ep) == 0) {
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->ep0_dir = 0;
+ }
+out:
+ VDBG(" %s %s halt stat %d", ep->ep.name,
+ value ? "set" : "clear", status);
+
+ return status;
+}
+
+static void fsl_ep_fifo_flush(struct usb_ep *_ep)
+{
+ struct fsl_ep *ep;
+ int ep_num, ep_dir;
+ u32 bits;
+ unsigned long timeout;
+#define FSL_UDC_FLUSH_TIMEOUT 1000
+
+ if (!_ep) {
+ return;
+ } else {
+ ep = container_of(_ep, struct fsl_ep, ep);
+ if (!ep->desc)
+ return;
+ }
+ ep_num = ep_index(ep);
+ ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
+
+ if (ep_num == 0)
+ bits = (1 << 16) | 1;
+ else if (ep_dir == USB_SEND)
+ bits = 1 << (16 + ep_num);
+ else
+ bits = 1 << ep_num;
+
+ timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT;
+ do {
+ fsl_writel(bits, &dr_regs->endptflush);
+
+ /* Wait until flush complete */
+ while (fsl_readl(&dr_regs->endptflush)) {
+ if (time_after(jiffies, timeout)) {
+ ERR("ep flush timeout\n");
+ return;
+ }
+ cpu_relax();
+ }
+ /* See if we need to flush again */
+ } while (fsl_readl(&dr_regs->endptstatus) & bits);
+}
+
+static struct usb_ep_ops fsl_ep_ops = {
+ .enable = fsl_ep_enable,
+ .disable = fsl_ep_disable,
+
+ .alloc_request = fsl_alloc_request,
+ .free_request = fsl_free_request,
+
+ .queue = fsl_ep_queue,
+ .dequeue = fsl_ep_dequeue,
+
+ .set_halt = fsl_ep_set_halt,
+ .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */
+};
+
+/*-------------------------------------------------------------------------
+ Gadget Driver Layer Operations
+-------------------------------------------------------------------------*/
+
+/*----------------------------------------------------------------------
+ * Get the current frame number (from DR frame_index Reg )
+ *----------------------------------------------------------------------*/
+static int fsl_get_frame(struct usb_gadget *gadget)
+{
+ return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS);
+}
+
+/*-----------------------------------------------------------------------
+ * Tries to wake up the host connected to this gadget
+ -----------------------------------------------------------------------*/
+static int fsl_wakeup(struct usb_gadget *gadget)
+{
+ struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget);
+ u32 portsc;
+
+ /* Remote wakeup feature not enabled by host */
+ if (!udc->remote_wakeup)
+ return -ENOTSUPP;
+
+ portsc = fsl_readl(&dr_regs->portsc1);
+ /* not suspended? */
+ if (!(portsc & PORTSCX_PORT_SUSPEND))
+ return 0;
+ /* trigger force resume */
+ portsc |= PORTSCX_PORT_FORCE_RESUME;
+ fsl_writel(portsc, &dr_regs->portsc1);
+ return 0;
+}
+
+static int can_pullup(struct fsl_udc *udc)
+{
+ return udc->driver && udc->softconnect && udc->vbus_active;
+}
+
+/* Notify controller that VBUS is powered, Called by whatever
+ detects VBUS sessions */
+static int fsl_vbus_session(struct usb_gadget *gadget, int is_active)
+{
+ struct fsl_udc *udc;
+ unsigned long flags;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+ spin_lock_irqsave(&udc->lock, flags);
+ VDBG("VBUS %s", is_active ? "on" : "off");
+ udc->vbus_active = (is_active != 0);
+ if (can_pullup(udc))
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ else
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return 0;
+}
+
+/* constrain controller's VBUS power usage
+ * This call is used by gadget drivers during SET_CONFIGURATION calls,
+ * reporting how much power the device may consume. For example, this
+ * could affect how quickly batteries are recharged.
+ *
+ * Returns zero on success, else negative errno.
+ */
+static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
+{
+ struct fsl_udc *udc;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+ if (udc->transceiver)
+ return otg_set_power(udc->transceiver, mA);
+ return -ENOTSUPP;
+}
+
+/* Change Data+ pullup status
+ * this func is used by usb_gadget_connect/disconnet
+ */
+static int fsl_pullup(struct usb_gadget *gadget, int is_on)
+{
+ struct fsl_udc *udc;
+
+ udc = container_of(gadget, struct fsl_udc, gadget);
+ udc->softconnect = (is_on != 0);
+ if (can_pullup(udc))
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+ else
+ fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
+ &dr_regs->usbcmd);
+
+ return 0;
+}
+
+/* defined in gadget.h */
+static struct usb_gadget_ops fsl_gadget_ops = {
+ .get_frame = fsl_get_frame,
+ .wakeup = fsl_wakeup,
+/* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */
+ .vbus_session = fsl_vbus_session,
+ .vbus_draw = fsl_vbus_draw,
+ .pullup = fsl_pullup,
+};
+
+/* Set protocol stall on ep0, protocol stall will automatically be cleared
+ on new transaction */
+static void ep0stall(struct fsl_udc *udc)
+{
+ u32 tmp;
+
+ /* must set tx and rx to stall at the same time */
+ tmp = fsl_readl(&dr_regs->endptctrl[0]);
+ tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL;
+ fsl_writel(tmp, &dr_regs->endptctrl[0]);
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->ep0_dir = 0;
+}
+
+/* Prime a status phase for ep0 */
+static int ep0_prime_status(struct fsl_udc *udc, int direction)
+{
+ struct fsl_req *req = udc->status_req;
+ struct fsl_ep *ep;
+
+ if (direction == EP_DIR_IN)
+ udc->ep0_dir = USB_DIR_IN;
+ else
+ udc->ep0_dir = USB_DIR_OUT;
+
+ ep = &udc->eps[0];
+ udc->ep0_state = WAIT_FOR_OUT_STATUS;
+
+ req->ep = ep;
+ req->req.length = 0;
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->req.complete = NULL;
+ req->dtd_count = 0;
+
+ if (fsl_req_to_dtd(req) == 0)
+ fsl_queue_td(ep, req);
+ else
+ return -ENOMEM;
+
+ list_add_tail(&req->queue, &ep->queue);
+
+ return 0;
+}
+
+static void udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
+{
+ struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
+
+ if (ep->name)
+ nuke(ep, -ESHUTDOWN);
+}
+
+/*
+ * ch9 Set address
+ */
+static void ch9setaddress(struct fsl_udc *udc, u16 value, u16 index, u16 length)
+{
+ /* Save the new address to device struct */
+ udc->device_address = (u8) value;
+ /* Update usb state */
+ udc->usb_state = USB_STATE_ADDRESS;
+ /* Status phase */
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+}
+
+/*
+ * ch9 Get status
+ */
+static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
+ u16 index, u16 length)
+{
+ u16 tmp = 0; /* Status, cpu endian */
+ struct fsl_req *req;
+ struct fsl_ep *ep;
+
+ ep = &udc->eps[0];
+
+ if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
+ /* Get device status */
+ tmp = 1 << USB_DEVICE_SELF_POWERED;
+ tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
+ /* Get interface status */
+ /* We don't have interface information in udc driver */
+ tmp = 0;
+ } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
+ /* Get endpoint status */
+ struct fsl_ep *target_ep;
+
+ target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index));
+
+ /* stall if endpoint doesn't exist */
+ if (!target_ep->desc)
+ goto stall;
+ tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep))
+ << USB_ENDPOINT_HALT;
+ }
+
+ udc->ep0_dir = USB_DIR_IN;
+ /* Borrow the per device status_req */
+ req = udc->status_req;
+ /* Fill in the reqest structure */
+ *((u16 *) req->req.buf) = cpu_to_le16(tmp);
+ req->ep = ep;
+ req->req.length = 2;
+ req->req.status = -EINPROGRESS;
+ req->req.actual = 0;
+ req->req.complete = NULL;
+ req->dtd_count = 0;
+
+ /* prime the data phase */
+ if ((fsl_req_to_dtd(req) == 0))
+ fsl_queue_td(ep, req);
+ else /* no mem */
+ goto stall;
+
+ list_add_tail(&req->queue, &ep->queue);
+ udc->ep0_state = DATA_STATE_XMIT;
+ return;
+stall:
+ ep0stall(udc);
+}
+
+static void setup_received_irq(struct fsl_udc *udc,
+ struct usb_ctrlrequest *setup)
+{
+ u16 wValue = le16_to_cpu(setup->wValue);
+ u16 wIndex = le16_to_cpu(setup->wIndex);
+ u16 wLength = le16_to_cpu(setup->wLength);
+
+ udc_reset_ep_queue(udc, 0);
+
+ /* We process some stardard setup requests here */
+ switch (setup->bRequest) {
+ case USB_REQ_GET_STATUS:
+ /* Data+Status phase from udc */
+ if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
+ != (USB_DIR_IN | USB_TYPE_STANDARD))
+ break;
+ ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength);
+ return;
+
+ case USB_REQ_SET_ADDRESS:
+ /* Status phase from udc */
+ if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD
+ | USB_RECIP_DEVICE))
+ break;
+ ch9setaddress(udc, wValue, wIndex, wLength);
+ return;
+
+ case USB_REQ_CLEAR_FEATURE:
+ case USB_REQ_SET_FEATURE:
+ /* Status phase from udc */
+ {
+ int rc = -EOPNOTSUPP;
+
+ if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK))
+ == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) {
+ int pipe = get_pipe_by_windex(wIndex);
+ struct fsl_ep *ep;
+
+ if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
+ break;
+ ep = get_ep_by_pipe(udc, pipe);
+
+ spin_unlock(&udc->lock);
+ rc = fsl_ep_set_halt(&ep->ep,
+ (setup->bRequest == USB_REQ_SET_FEATURE)
+ ? 1 : 0);
+ spin_lock(&udc->lock);
+
+ } else if ((setup->bRequestType & (USB_RECIP_MASK
+ | USB_TYPE_MASK)) == (USB_RECIP_DEVICE
+ | USB_TYPE_STANDARD)) {
+ /* Note: The driver has not include OTG support yet.
+ * This will be set when OTG support is added */
+ if (!gadget_is_otg(&udc->gadget))
+ break;
+ else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
+ udc->gadget.b_hnp_enable = 1;
+ else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
+ udc->gadget.a_hnp_support = 1;
+ else if (setup->bRequest ==
+ USB_DEVICE_A_ALT_HNP_SUPPORT)
+ udc->gadget.a_alt_hnp_support = 1;
+ else
+ break;
+ rc = 0;
+ } else
+ break;
+
+ if (rc == 0) {
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+ }
+ return;
+ }
+
+ default:
+ break;
+ }
+
+ /* Requests handled by gadget */
+ if (wLength) {
+ /* Data phase from gadget, status phase from udc */
+ udc->ep0_dir = (setup->bRequestType & USB_DIR_IN)
+ ? USB_DIR_IN : USB_DIR_OUT;
+ spin_unlock(&udc->lock);
+ if (udc->driver->setup(&udc->gadget,
+ &udc->local_setup_buff) < 0)
+ ep0stall(udc);
+ spin_lock(&udc->lock);
+ udc->ep0_state = (setup->bRequestType & USB_DIR_IN)
+ ? DATA_STATE_XMIT : DATA_STATE_RECV;
+ } else {
+ /* No data phase, IN status from gadget */
+ udc->ep0_dir = USB_DIR_IN;
+ spin_unlock(&udc->lock);
+ if (udc->driver->setup(&udc->gadget,
+ &udc->local_setup_buff) < 0)
+ ep0stall(udc);
+ spin_lock(&udc->lock);
+ udc->ep0_state = WAIT_FOR_OUT_STATUS;
+ }
+}
+
+/* Process request for Data or Status phase of ep0
+ * prime status phase if needed */
+static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0,
+ struct fsl_req *req)
+{
+ if (udc->usb_state == USB_STATE_ADDRESS) {
+ /* Set the new address */
+ u32 new_address = (u32) udc->device_address;
+ fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS,
+ &dr_regs->deviceaddr);
+ }
+
+ done(ep0, req, 0);
+
+ switch (udc->ep0_state) {
+ case DATA_STATE_XMIT:
+ /* receive status phase */
+ if (ep0_prime_status(udc, EP_DIR_OUT))
+ ep0stall(udc);
+ break;
+ case DATA_STATE_RECV:
+ /* send status phase */
+ if (ep0_prime_status(udc, EP_DIR_IN))
+ ep0stall(udc);
+ break;
+ case WAIT_FOR_OUT_STATUS:
+ udc->ep0_state = WAIT_FOR_SETUP;
+ break;
+ case WAIT_FOR_SETUP:
+ ERR("Unexpect ep0 packets\n");
+ break;
+ default:
+ ep0stall(udc);
+ break;
+ }
+}
+
+/* Tripwire mechanism to ensure a setup packet payload is extracted without
+ * being corrupted by another incoming setup packet */
+static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr)
+{
+ u32 temp;
+ struct ep_queue_head *qh;
+
+ qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT];
+
+ /* Clear bit in ENDPTSETUPSTAT */
+ temp = fsl_readl(&dr_regs->endptsetupstat);
+ fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat);
+
+ /* while a hazard exists when setup package arrives */
+ do {
+ /* Set Setup Tripwire */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd);
+
+ /* Copy the setup packet to local buffer */
+ memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8);
+ } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW));
+
+ /* Clear Setup Tripwire */
+ temp = fsl_readl(&dr_regs->usbcmd);
+ fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd);
+}
+
+/* process-ep_req(): free the completed Tds for this req */
+static int process_ep_req(struct fsl_udc *udc, int pipe,
+ struct fsl_req *curr_req)
+{
+ struct ep_td_struct *curr_td;
+ int td_complete, actual, remaining_length, j, tmp;
+ int status = 0;
+ int errors = 0;
+ struct ep_queue_head *curr_qh = &udc->ep_qh[pipe];
+ int direction = pipe % 2;
+
+ curr_td = curr_req->head;
+ td_complete = 0;
+ actual = curr_req->req.length;
+
+ for (j = 0; j < curr_req->dtd_count; j++) {
+ remaining_length = (le32_to_cpu(curr_td->size_ioc_sts)
+ & DTD_PACKET_SIZE)
+ >> DTD_LENGTH_BIT_POS;
+ actual -= remaining_length;
+
+ if ((errors = le32_to_cpu(curr_td->size_ioc_sts) &
+ DTD_ERROR_MASK)) {
+ if (errors & DTD_STATUS_HALTED) {
+ ERR("dTD error %08x QH=%d\n", errors, pipe);
+ /* Clear the errors and Halt condition */
+ tmp = le32_to_cpu(curr_qh->size_ioc_int_sts);
+ tmp &= ~errors;
+ curr_qh->size_ioc_int_sts = cpu_to_le32(tmp);
+ status = -EPIPE;
+ /* FIXME: continue with next queued TD? */
+
+ break;
+ }
+ if (errors & DTD_STATUS_DATA_BUFF_ERR) {
+ VDBG("Transfer overflow");
+ status = -EPROTO;
+ break;
+ } else if (errors & DTD_STATUS_TRANSACTION_ERR) {
+ VDBG("ISO error");
+ status = -EILSEQ;
+ break;
+ } else
+ ERR("Unknown error has occured (0x%x)!\n",
+ errors);
+
+ } else if (le32_to_cpu(curr_td->size_ioc_sts)
+ & DTD_STATUS_ACTIVE) {
+ VDBG("Request not complete");
+ status = REQ_UNCOMPLETE;
+ return status;
+ } else if (remaining_length) {
+ if (direction) {
+ VDBG("Transmit dTD remaining length not zero");
+ status = -EPROTO;
+ break;
+ } else {
+ td_complete++;
+ break;
+ }
+ } else {
+ td_complete++;
+ VDBG("dTD transmitted successful");
+ }
+
+ if (j != curr_req->dtd_count - 1)
+ curr_td = (struct ep_td_struct *)curr_td->next_td_virt;
+ }
+
+ if (status)
+ return status;
+
+ curr_req->req.actual = actual;
+
+ return 0;
+}
+
+/* Process a DTD completion interrupt */
+static void dtd_complete_irq(struct fsl_udc *udc)
+{
+ u32 bit_pos;
+ int i, ep_num, direction, bit_mask, status;
+ struct fsl_ep *curr_ep;
+ struct fsl_req *curr_req, *temp_req;
+
+ /* Clear the bits in the register */
+ bit_pos = fsl_readl(&dr_regs->endptcomplete);
+ fsl_writel(bit_pos, &dr_regs->endptcomplete);
+
+ if (!bit_pos)
+ return;
+
+ for (i = 0; i < udc->max_ep * 2; i++) {
+ ep_num = i >> 1;
+ direction = i % 2;
+
+ bit_mask = 1 << (ep_num + 16 * direction);
+
+ if (!(bit_pos & bit_mask))
+ continue;
+
+ curr_ep = get_ep_by_pipe(udc, i);
+
+ /* If the ep is configured */
+ if (curr_ep->name == NULL) {
+ WARNING("Invalid EP?");
+ continue;
+ }
+
+ /* process the req queue until an uncomplete request */
+ list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue,
+ queue) {
+ status = process_ep_req(udc, i, curr_req);
+
+ VDBG("status of process_ep_req= %d, ep = %d",
+ status, ep_num);
+ if (status == REQ_UNCOMPLETE)
+ break;
+ /* write back status to req */
+ curr_req->req.status = status;
+
+ if (ep_num == 0) {
+ ep0_req_complete(udc, curr_ep, curr_req);
+ break;
+ } else
+ done(curr_ep, curr_req, status);
+ }
+ }
+}
+
+/* Process a port change interrupt */
+static void port_change_irq(struct fsl_udc *udc)
+{
+ u32 speed;
+
+ /* Bus resetting is finished */
+ if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
+ /* Get the speed */
+ speed = (fsl_readl(&dr_regs->portsc1)
+ & PORTSCX_PORT_SPEED_MASK);
+ switch (speed) {
+ case PORTSCX_PORT_SPEED_HIGH:
+ udc->gadget.speed = USB_SPEED_HIGH;
+ break;
+ case PORTSCX_PORT_SPEED_FULL:
+ udc->gadget.speed = USB_SPEED_FULL;
+ break;
+ case PORTSCX_PORT_SPEED_LOW:
+ udc->gadget.speed = USB_SPEED_LOW;
+ break;
+ default:
+ udc->gadget.speed = USB_SPEED_UNKNOWN;
+ break;
+ }
+ }
+
+ /* Update USB state */
+ if (!udc->resume_state)
+ udc->usb_state = USB_STATE_DEFAULT;
+}
+
+/* Process suspend interrupt */
+static void suspend_irq(struct fsl_udc *udc)
+{
+ udc->resume_state = udc->usb_state;
+ udc->usb_state = USB_STATE_SUSPENDED;
+
+ /* report suspend to the driver, serial.c does not support this */
+ if (udc->driver->suspend)
+ udc->driver->suspend(&udc->gadget);
+}
+
+static void bus_resume(struct fsl_udc *udc)
+{
+ udc->usb_state = udc->resume_state;
+ udc->resume_state = 0;
+
+ /* report resume to the driver, serial.c does not support this */
+ if (udc->driver->resume)
+ udc->driver->resume(&udc->gadget);
+}
+
+/* Clear up all ep queues */
+static int reset_queues(struct fsl_udc *udc)
+{
+ u8 pipe;
+
+ for (pipe = 0; pipe < udc->max_pipes; pipe++)
+ udc_reset_ep_queue(udc, pipe);
+
+ /* report disconnect; the driver is already quiesced */
+ spin_unlock(&udc->lock);
+ udc->driver->disconnect(&udc->gadget);
+ spin_lock(&udc->lock);
+
+ return 0;
+}
+
+/* Process reset interrupt */
+static void reset_irq(struct fsl_udc *udc)
+{
+ u32 temp;
+ unsigned long timeout;
+
+ /* Clear the device address */
+ temp = fsl_readl(&dr_regs->deviceaddr);
+ fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr);
+
+ udc->device_address = 0;
+
+ /* Clear usb state */
+ udc->resume_state = 0;
+ udc->ep0_dir = 0;
+ udc->ep0_state = WAIT_FOR_SETUP;
+ udc->remote_wakeup = 0; /* default to 0 on reset */
+ udc->gadget.b_hnp_enable = 0;
+ udc->gadget.a_hnp_support = 0;
+ udc->gadget.a_alt_hnp_support = 0;
+
+ /* Clear all the setup token semaphores */
+ temp = fsl_readl(&dr_regs->endptsetupstat);
+ fsl_writel(temp, &dr_regs->endptsetupstat);
+
+ /* Clear all the endpoint complete status bits */
+ temp = fsl_readl(&dr_regs->endptcomplete);
+ fsl_writel(temp, &dr_regs->endptcomplete);
+
+ timeout = jiffies + 100;
+ while (fsl_readl(&dr_regs->endpointprime)) {
+ /* Wait until all endptprime bits cleared */
+ if (time_after(jiffies, timeout)) {
+ ERR("Timeout for reset\n");
+ break;
+ }
+ cpu_relax();
+ }
+
+ /* Write 1s to the flush register */
+ fsl_writel(0xffffffff, &dr_regs->endptflush);
+
+ if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
+ VDBG("Bus reset");
+ /* Reset all the queues, include XD, dTD, EP queue
+ * head and TR Queue */
+ reset_queues(udc);
+ udc->usb_state = USB_STATE_DEFAULT;
+ } else {
+ VDBG("Controller reset");
+ /* initialize usb hw reg except for regs for EP, not
+ * touch usbintr reg */
+ dr_controller_setup(udc);
+
+ /* Reset all internal used Queues */
+ reset_queues(udc);
+
+ ep0_setup(udc);
+
+ /* Enable DR IRQ reg, Set Run bit, change udc state */
+ dr_controller_run(udc);
+ udc->usb_state = USB_STATE_ATTACHED;
+ }
+}
+
+/*
+ * USB device controller interrupt handler
+ */
+static irqreturn_t fsl_udc_irq(int irq, void *_udc)
+{
+ struct fsl_udc *udc = _udc;
+ u32 irq_src;
+ irqreturn_t status = IRQ_NONE;
+ unsigned long flags;
+
+ /* Disable ISR for OTG host mode */
+ if (udc->stopped)
+ return IRQ_NONE;
+ spin_lock_irqsave(&udc->lock, flags);
+ irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr);
+ /* Clear notification bits */
+ fsl_writel(irq_src, &dr_regs->usbsts);
+
+ /* VDBG("irq_src [0x%8x]", irq_src); */
+
+ /* Need to resume? */
+ if (udc->usb_state == USB_STATE_SUSPENDED)
+ if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0)
+ bus_resume(udc);
+
+ /* USB Interrupt */
+ if (irq_src & USB_STS_INT) {
+ VDBG("Packet int");
+ /* Setup package, we only support ep0 as control ep */
+ if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
+ tripwire_handler(udc, 0,
+ (u8 *) (&udc->local_setup_buff));
+ setup_received_irq(udc, &udc->local_setup_buff);
+ status = IRQ_HANDLED;
+ }
+
+ /* completion of dtd */
+ if (fsl_readl(&dr_regs->endptcomplete)) {
+ dtd_complete_irq(udc);
+ status = IRQ_HANDLED;
+ }
+ }
+
+ /* SOF (for ISO transfer) */
+ if (irq_src & USB_STS_SOF) {
+ status = IRQ_HANDLED;
+ }
+
+ /* Port Change */
+ if (irq_src & USB_STS_PORT_CHANGE) {
+ port_change_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ /* Reset Received */
+ if (irq_src & USB_STS_RESET) {
+ reset_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ /* Sleep Enable (Suspend) */
+ if (irq_src & USB_STS_SUSPEND) {
+ suspend_irq(udc);
+ status = IRQ_HANDLED;
+ }
+
+ if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
+ VDBG("Error IRQ %x", irq_src);
+ }
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+ return status;
+}
+
+/*----------------------------------------------------------------*
+ * Hook to gadget drivers
+ * Called by initialization code of gadget drivers
+*----------------------------------------------------------------*/
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ int retval = -ENODEV;
+ unsigned long flags = 0;
+
+ if (!udc_controller)
+ return -ENODEV;
+
+ if (!driver || (driver->speed != USB_SPEED_FULL
+ && driver->speed != USB_SPEED_HIGH)
+ || !driver->bind || !driver->disconnect
+ || !driver->setup)
+ return -EINVAL;
+
+ if (udc_controller->driver)
+ return -EBUSY;
+
+ /* lock is needed but whether should use this lock or another */
+ spin_lock_irqsave(&udc_controller->lock, flags);
+
+ driver->driver.bus = NULL;
+ /* hook up the driver */
+ udc_controller->driver = driver;
+ udc_controller->gadget.dev.driver = &driver->driver;
+ spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+ /* bind udc driver to gadget driver */
+ retval = driver->bind(&udc_controller->gadget);
+ if (retval) {
+ VDBG("bind to %s --> %d", driver->driver.name, retval);
+ udc_controller->gadget.dev.driver = NULL;
+ udc_controller->driver = NULL;
+ goto out;
+ }
+
+ /* Enable DR IRQ reg and Set usbcmd reg Run bit */
+ dr_controller_run(udc_controller);
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+ printk(KERN_INFO "%s: bind to driver %s\n",
+ udc_controller->gadget.name, driver->driver.name);
+
+out:
+ if (retval)
+ printk(KERN_WARNING "gadget driver register failed %d\n",
+ retval);
+ return retval;
+}
+EXPORT_SYMBOL(usb_gadget_register_driver);
+
+/* Disconnect from gadget driver */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct fsl_ep *loop_ep;
+ unsigned long flags;
+
+ if (!udc_controller)
+ return -ENODEV;
+
+ if (!driver || driver != udc_controller->driver || !driver->unbind)
+ return -EINVAL;
+
+ if (udc_controller->transceiver)
+ otg_set_peripheral(udc_controller->transceiver, NULL);
+
+ /* stop DR, disable intr */
+ dr_controller_stop(udc_controller);
+
+ /* in fact, no needed */
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+
+ /* stand operation */
+ spin_lock_irqsave(&udc_controller->lock, flags);
+ udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+ nuke(&udc_controller->eps[0], -ESHUTDOWN);
+ list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
+ ep.ep_list)
+ nuke(loop_ep, -ESHUTDOWN);
+ spin_unlock_irqrestore(&udc_controller->lock, flags);
+
+ /* report disconnect; the controller is already quiesced */
+ driver->disconnect(&udc_controller->gadget);
+
+ /* unbind gadget and unhook driver. */
+ driver->unbind(&udc_controller->gadget);
+ udc_controller->gadget.dev.driver = NULL;
+ udc_controller->driver = NULL;
+
+ printk(KERN_WARNING "unregistered gadget driver '%s'\n",
+ driver->driver.name);
+ return 0;
+}
+EXPORT_SYMBOL(usb_gadget_unregister_driver);
+
+/*-------------------------------------------------------------------------
+ PROC File System Support
+-------------------------------------------------------------------------*/
+#ifdef CONFIG_USB_GADGET_DEBUG_FILES
+
+#include <linux/seq_file.h>
+
+static const char proc_filename[] = "driver/fsl_usb2_udc";
+
+static int fsl_proc_read(char *page, char **start, off_t off, int count,
+ int *eof, void *_dev)
+{
+ char *buf = page;
+ char *next = buf;
+ unsigned size = count;
+ unsigned long flags;
+ int t, i;
+ u32 tmp_reg;
+ struct fsl_ep *ep = NULL;
+ struct fsl_req *req;
+
+ struct fsl_udc *udc = udc_controller;
+ if (off != 0)
+ return 0;
+
+ spin_lock_irqsave(&udc->lock, flags);
+
+ /* ------basic driver information ---- */
+ t = scnprintf(next, size,
+ DRIVER_DESC "\n"
+ "%s version: %s\n"
+ "Gadget driver: %s\n\n",
+ driver_name, DRIVER_VERSION,
+ udc->driver ? udc->driver->driver.name : "(none)");
+ size -= t;
+ next += t;
+
+ /* ------ DR Registers ----- */
+ tmp_reg = fsl_readl(&dr_regs->usbcmd);
+ t = scnprintf(next, size,
+ "USBCMD reg:\n"
+ "SetupTW: %d\n"
+ "Run/Stop: %s\n\n",
+ (tmp_reg & USB_CMD_SUTW) ? 1 : 0,
+ (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbsts);
+ t = scnprintf(next, size,
+ "USB Status Reg:\n"
+ "Dr Suspend: %d Reset Received: %d System Error: %s "
+ "USB Error Interrupt: %s\n\n",
+ (tmp_reg & USB_STS_SUSPEND) ? 1 : 0,
+ (tmp_reg & USB_STS_RESET) ? 1 : 0,
+ (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal",
+ (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbintr);
+ t = scnprintf(next, size,
+ "USB Intrrupt Enable Reg:\n"
+ "Sleep Enable: %d SOF Received Enable: %d "
+ "Reset Enable: %d\n"
+ "System Error Enable: %d "
+ "Port Change Dectected Enable: %d\n"
+ "USB Error Intr Enable: %d USB Intr Enable: %d\n\n",
+ (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
+ (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0,
+ (tmp_reg & USB_INTR_INT_EN) ? 1 : 0);
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->frindex);
+ t = scnprintf(next, size,
+ "USB Frame Index Reg: Frame Number is 0x%x\n\n",
+ (tmp_reg & USB_FRINDEX_MASKS));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->deviceaddr);
+ t = scnprintf(next, size,
+ "USB Device Address Reg: Device Addr is 0x%x\n\n",
+ (tmp_reg & USB_DEVICE_ADDRESS_MASK));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->endpointlistaddr);
+ t = scnprintf(next, size,
+ "USB Endpoint List Address Reg: "
+ "Device Addr is 0x%x\n\n",
+ (tmp_reg & USB_EP_LIST_ADDRESS_MASK));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->portsc1);
+ t = scnprintf(next, size,
+ "USB Port Status&Control Reg:\n"
+ "Port Transceiver Type : %s Port Speed: %s\n"
+ "PHY Low Power Suspend: %s Port Reset: %s "
+ "Port Suspend Mode: %s\n"
+ "Over-current Change: %s "
+ "Port Enable/Disable Change: %s\n"
+ "Port Enabled/Disabled: %s "
+ "Current Connect Status: %s\n\n", ( {
+ char *s;
+ switch (tmp_reg & PORTSCX_PTS_FSLS) {
+ case PORTSCX_PTS_UTMI:
+ s = "UTMI"; break;
+ case PORTSCX_PTS_ULPI:
+ s = "ULPI "; break;
+ case PORTSCX_PTS_FSLS:
+ s = "FS/LS Serial"; break;
+ default:
+ s = "None"; break;
+ }
+ s;} ), ( {
+ char *s;
+ switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
+ case PORTSCX_PORT_SPEED_FULL:
+ s = "Full Speed"; break;
+ case PORTSCX_PORT_SPEED_LOW:
+ s = "Low Speed"; break;
+ case PORTSCX_PORT_SPEED_HIGH:
+ s = "High Speed"; break;
+ default:
+ s = "Undefined"; break;
+ }
+ s;
+ } ),
+ (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
+ "Normal PHY mode" : "Low power mode",
+ (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
+ "Not in Reset",
+ (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in",
+ (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" :
+ "No",
+ (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" :
+ "Not change",
+ (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" :
+ "Not correct",
+ (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ?
+ "Attached" : "Not-Att");
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->usbmode);
+ t = scnprintf(next, size,
+ "USB Mode Reg: Controller Mode is: %s\n\n", ( {
+ char *s;
+ switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) {
+ case USB_MODE_CTRL_MODE_IDLE:
+ s = "Idle"; break;
+ case USB_MODE_CTRL_MODE_DEVICE:
+ s = "Device Controller"; break;
+ case USB_MODE_CTRL_MODE_HOST:
+ s = "Host Controller"; break;
+ default:
+ s = "None"; break;
+ }
+ s;
+ } ));
+ size -= t;
+ next += t;
+
+ tmp_reg = fsl_readl(&dr_regs->endptsetupstat);
+ t = scnprintf(next, size,
+ "Endpoint Setup Status Reg: SETUP on ep 0x%x\n\n",
+ (tmp_reg & EP_SETUP_STATUS_MASK));
+ size -= t;
+ next += t;
+
+ for (i = 0; i < udc->max_ep / 2; i++) {
+ tmp_reg = fsl_readl(&dr_regs->endptctrl[i]);
+ t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n",
+ i, tmp_reg);
+ size -= t;
+ next += t;
+ }
+ tmp_reg = fsl_readl(&dr_regs->endpointprime);
+ t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n\n", tmp_reg);
+ size -= t;
+ next += t;
+
+#ifndef CONFIG_ARCH_MXC
+ tmp_reg = usb_sys_regs->snoop1;
+ t = scnprintf(next, size, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg);
+ size -= t;
+ next += t;
+
+ tmp_reg = usb_sys_regs->control;
+ t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n",
+ tmp_reg);
+ size -= t;
+ next += t;
+#endif
+
+ /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */
+ ep = &udc->eps[0];
+ t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n",
+ ep->ep.name, ep_maxpacket(ep), ep_index(ep));
+ size -= t;
+ next += t;
+
+ if (list_empty(&ep->queue)) {
+ t = scnprintf(next, size, "its req queue is empty\n\n");
+ size -= t;
+ next += t;
+ } else {
+ list_for_each_entry(req, &ep->queue, queue) {
+ t = scnprintf(next, size,
+ "req %p actual 0x%x length 0x%x buf %p\n",
+ &req->req, req->req.actual,
+ req->req.length, req->req.buf);
+ size -= t;
+ next += t;
+ }
+ }
+ /* other gadget->eplist ep */
+ list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
+ if (ep->desc) {
+ t = scnprintf(next, size,
+ "\nFor %s Maxpkt is 0x%x "
+ "index is 0x%x\n",
+ ep->ep.name, ep_maxpacket(ep),
+ ep_index(ep));
+ size -= t;
+ next += t;
+
+ if (list_empty(&ep->queue)) {
+ t = scnprintf(next, size,
+ "its req queue is empty\n\n");
+ size -= t;
+ next += t;
+ } else {
+ list_for_each_entry(req, &ep->queue, queue) {
+ t = scnprintf(next, size,
+ "req %p actual 0x%x length "
+ "0x%x buf %p\n",
+ &req->req, req->req.actual,
+ req->req.length, req->req.buf);
+ size -= t;
+ next += t;
+ } /* end for each_entry of ep req */
+ } /* end for else */
+ } /* end for if(ep->queue) */
+ } /* end (ep->desc) */
+
+ spin_unlock_irqrestore(&udc->lock, flags);
+
+ *eof = 1;
+ return count - size;
+}
+
+#define create_proc_file() create_proc_read_entry(proc_filename, \
+ 0, NULL, fsl_proc_read, NULL)
+
+#define remove_proc_file() remove_proc_entry(proc_filename, NULL)
+
+#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
+
+#define create_proc_file() do {} while (0)
+#define remove_proc_file() do {} while (0)
+
+#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
+
+/*-------------------------------------------------------------------------*/
+
+/* Release udc structures */
+static void fsl_udc_release(struct device *dev)
+{
+ complete(udc_controller->done);
+ dma_free_coherent(dev, udc_controller->ep_qh_size,
+ udc_controller->ep_qh, udc_controller->ep_qh_dma);
+ kfree(udc_controller);
+}
+
+/******************************************************************
+ Internal structure setup functions
+*******************************************************************/
+/*------------------------------------------------------------------
+ * init resource for globle controller
+ * Return the udc handle on success or NULL on failure
+ ------------------------------------------------------------------*/
+static int __init struct_udc_setup(struct fsl_udc *udc,
+ struct platform_device *pdev)
+{
+ struct fsl_usb2_platform_data *pdata;
+ size_t size;
+
+ pdata = pdev->dev.platform_data;
+ udc->phy_mode = pdata->phy_mode;
+
+ udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL);
+ if (!udc->eps) {
+ ERR("malloc fsl_ep failed\n");
+ return -1;
+ }
+
+ /* initialized QHs, take care of alignment */
+ size = udc->max_ep * sizeof(struct ep_queue_head);
+ if (size < QH_ALIGNMENT)
+ size = QH_ALIGNMENT;
+ else if ((size % QH_ALIGNMENT) != 0) {
+ size += QH_ALIGNMENT + 1;
+ size &= ~(QH_ALIGNMENT - 1);
+ }
+ udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
+ &udc->ep_qh_dma, GFP_KERNEL);
+ if (!udc->ep_qh) {
+ ERR("malloc QHs for udc failed\n");
+ kfree(udc->eps);
+ return -1;
+ }
+
+ udc->ep_qh_size = size;
+
+ /* Initialize ep0 status request structure */
+ /* FIXME: fsl_alloc_request() ignores ep argument */
+ udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
+ struct fsl_req, req);
+ /* allocate a small amount of memory to get valid address */
+ udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
+ udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
+
+ udc->resume_state = USB_STATE_NOTATTACHED;
+ udc->usb_state = USB_STATE_POWERED;
+ udc->ep0_dir = 0;
+ udc->remote_wakeup = 0; /* default to 0 on reset */
+
+ return 0;
+}
+
+/*----------------------------------------------------------------
+ * Setup the fsl_ep struct for eps
+ * Link fsl_ep->ep to gadget->ep_list
+ * ep0out is not used so do nothing here
+ * ep0in should be taken care
+ *--------------------------------------------------------------*/
+static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index,
+ char *name, int link)
+{
+ struct fsl_ep *ep = &udc->eps[index];
+
+ ep->udc = udc;
+ strcpy(ep->name, name);
+ ep->ep.name = ep->name;
+
+ ep->ep.ops = &fsl_ep_ops;
+ ep->stopped = 0;
+
+ /* for ep0: maxP defined in desc
+ * for other eps, maxP is set by epautoconfig() called by gadget layer
+ */
+ ep->ep.maxpacket = (unsigned short) ~0;
+
+ /* the queue lists any req for this ep */
+ INIT_LIST_HEAD(&ep->queue);
+
+ /* gagdet.ep_list used for ep_autoconfig so no ep0 */
+ if (link)
+ list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
+ ep->gadget = &udc->gadget;
+ ep->qh = &udc->ep_qh[index];
+
+ return 0;
+}
+
+/* Driver probe function
+ * all intialization operations implemented here except enabling usb_intr reg
+ * board setup should have been done in the platform code
+ */
+static int __init fsl_udc_probe(struct platform_device *pdev)
+{
+ struct resource *res;
+ int ret = -ENODEV;
+ unsigned int i;
+ u32 dccparams;
+
+ if (strcmp(pdev->name, driver_name)) {
+ VDBG("Wrong device");
+ return -ENODEV;
+ }
+
+ udc_controller = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL);
+ if (udc_controller == NULL) {
+ ERR("malloc udc failed\n");
+ return -ENOMEM;
+ }
+
+ spin_lock_init(&udc_controller->lock);
+ udc_controller->stopped = 1;
+
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ ret = -ENXIO;
+ goto err_kfree;
+ }
+
+ if (!request_mem_region(res->start, res->end - res->start + 1,
+ driver_name)) {
+ ERR("request mem region for %s failed\n", pdev->name);
+ ret = -EBUSY;
+ goto err_kfree;
+ }
+
+ dr_regs = ioremap(res->start, resource_size(res));
+ if (!dr_regs) {
+ ret = -ENOMEM;
+ goto err_release_mem_region;
+ }
+
+#ifndef CONFIG_ARCH_MXC
+ usb_sys_regs = (struct usb_sys_interface *)
+ ((u32)dr_regs + USB_DR_SYS_OFFSET);
+#endif
+
+ /* Initialize USB clocks */
+ ret = fsl_udc_clk_init(pdev);
+ if (ret < 0)
+ goto err_iounmap_noclk;
+
+ /* Read Device Controller Capability Parameters register */
+ dccparams = fsl_readl(&dr_regs->dccparams);
+ if (!(dccparams & DCCPARAMS_DC)) {
+ ERR("This SOC doesn't support device role\n");
+ ret = -ENODEV;
+ goto err_iounmap;
+ }
+ /* Get max device endpoints */
+ /* DEN is bidirectional ep number, max_ep doubles the number */
+ udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2;
+
+ udc_controller->irq = platform_get_irq(pdev, 0);
+ if (!udc_controller->irq) {
+ ret = -ENODEV;
+ goto err_iounmap;
+ }
+
+ ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED,
+ driver_name, udc_controller);
+ if (ret != 0) {
+ ERR("cannot request irq %d err %d\n",
+ udc_controller->irq, ret);
+ goto err_iounmap;
+ }
+
+ /* Initialize the udc structure including QH member and other member */
+ if (struct_udc_setup(udc_controller, pdev)) {
+ ERR("Can't initialize udc data structure\n");
+ ret = -ENOMEM;
+ goto err_free_irq;
+ }
+
+ /* initialize usb hw reg except for regs for EP,
+ * leave usbintr reg untouched */
+ dr_controller_setup(udc_controller);
+
+ fsl_udc_clk_finalize(pdev);
+
+ /* Setup gadget structure */
+ udc_controller->gadget.ops = &fsl_gadget_ops;
+ udc_controller->gadget.is_dualspeed = 1;
+ udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
+ INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
+ udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
+ udc_controller->gadget.name = driver_name;
+
+ /* Setup gadget.dev and register with kernel */
+ dev_set_name(&udc_controller->gadget.dev, "gadget");
+ udc_controller->gadget.dev.release = fsl_udc_release;
+ udc_controller->gadget.dev.parent = &pdev->dev;
+ ret = device_register(&udc_controller->gadget.dev);
+ if (ret < 0)
+ goto err_free_irq;
+
+ /* setup QH and epctrl for ep0 */
+ ep0_setup(udc_controller);
+
+ /* setup udc->eps[] for ep0 */
+ struct_ep_setup(udc_controller, 0, "ep0", 0);
+ /* for ep0: the desc defined here;
+ * for other eps, gadget layer called ep_enable with defined desc
+ */
+ udc_controller->eps[0].desc = &fsl_ep0_desc;
+ udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD;
+
+ /* setup the udc->eps[] for non-control endpoints and link
+ * to gadget.ep_list */
+ for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) {
+ char name[14];
+
+ sprintf(name, "ep%dout", i);
+ struct_ep_setup(udc_controller, i * 2, name, 1);
+ sprintf(name, "ep%din", i);
+ struct_ep_setup(udc_controller, i * 2 + 1, name, 1);
+ }
+
+ /* use dma_pool for TD management */
+ udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev,
+ sizeof(struct ep_td_struct),
+ DTD_ALIGNMENT, UDC_DMA_BOUNDARY);
+ if (udc_controller->td_pool == NULL) {
+ ret = -ENOMEM;
+ goto err_unregister;
+ }
+ create_proc_file();
+ return 0;
+
+err_unregister:
+ device_unregister(&udc_controller->gadget.dev);
+err_free_irq:
+ free_irq(udc_controller->irq, udc_controller);
+err_iounmap:
+ fsl_udc_clk_release();
+err_iounmap_noclk:
+ iounmap(dr_regs);
+err_release_mem_region:
+ release_mem_region(res->start, res->end - res->start + 1);
+err_kfree:
+ kfree(udc_controller);
+ udc_controller = NULL;
+ return ret;
+}
+
+/* Driver removal function
+ * Free resources and finish pending transactions
+ */
+static int __exit fsl_udc_remove(struct platform_device *pdev)
+{
+ struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+
+ DECLARE_COMPLETION(done);
+
+ if (!udc_controller)
+ return -ENODEV;
+ udc_controller->done = &done;
+
+ fsl_udc_clk_release();
+
+ /* DR has been stopped in usb_gadget_unregister_driver() */
+ remove_proc_file();
+
+ /* Free allocated memory */
+ kfree(udc_controller->status_req->req.buf);
+ kfree(udc_controller->status_req);
+ kfree(udc_controller->eps);
+
+ dma_pool_destroy(udc_controller->td_pool);
+ free_irq(udc_controller->irq, udc_controller);
+ iounmap(dr_regs);
+ release_mem_region(res->start, res->end - res->start + 1);
+
+ device_unregister(&udc_controller->gadget.dev);
+ /* free udc --wait for the release() finished */
+ wait_for_completion(&done);
+
+ return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Modify Power management attributes
+ * Used by OTG statemachine to disable gadget temporarily
+ -----------------------------------------------------------------*/
+static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state)
+{
+ dr_controller_stop(udc_controller);
+ return 0;
+}
+
+/*-----------------------------------------------------------------
+ * Invoked on USB resume. May be called in_interrupt.
+ * Here we start the DR controller and enable the irq
+ *-----------------------------------------------------------------*/
+static int fsl_udc_resume(struct platform_device *pdev)
+{
+ /* Enable DR irq reg and set controller Run */
+ if (udc_controller->stopped) {
+ dr_controller_setup(udc_controller);
+ dr_controller_run(udc_controller);
+ }
+ udc_controller->usb_state = USB_STATE_ATTACHED;
+ udc_controller->ep0_state = WAIT_FOR_SETUP;
+ udc_controller->ep0_dir = 0;
+ return 0;
+}
+
+/*-------------------------------------------------------------------------
+ Register entry point for the peripheral controller driver
+--------------------------------------------------------------------------*/
+
+static struct platform_driver udc_driver = {
+ .remove = __exit_p(fsl_udc_remove),
+ /* these suspend and resume are not usb suspend and resume */
+ .suspend = fsl_udc_suspend,
+ .resume = fsl_udc_resume,
+ .driver = {
+ .name = (char *)driver_name,
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init udc_init(void)
+{
+ printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION);
+ return platform_driver_probe(&udc_driver, fsl_udc_probe);
+}
+
+module_init(udc_init);
+
+static void __exit udc_exit(void)
+{
+ platform_driver_unregister(&udc_driver);
+ printk(KERN_WARNING "%s unregistered\n", driver_desc);
+}
+
+module_exit(udc_exit);
+
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:fsl-usb2-udc");
diff --git a/drivers/usb/gadget/fsl_usb2_udc.c b/drivers/usb/gadget/fsl_usb2_udc.c
deleted file mode 100644
index 9d7b95d..0000000
--- a/drivers/usb/gadget/fsl_usb2_udc.c
+++ /dev/null
@@ -1,2468 +0,0 @@
-/*
- * Copyright (C) 2004-2007 Freescale Semicondutor, Inc. All rights reserved.
- *
- * Author: Li Yang <leoli@xxxxxxxxxxxxx>
- * Jiang Bo <tanya.jiang@xxxxxxxxxxxxx>
- *
- * Description:
- * Freescale high-speed USB SOC DR module device controller driver.
- * This can be found on MPC8349E/MPC8313E cpus.
- * The driver is previously named as mpc_udc. Based on bare board
- * code from Dave Liu and Shlomi Gridish.
- *
- * 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.
- */
-
-#undef VERBOSE
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/ioport.h>
-#include <linux/types.h>
-#include <linux/errno.h>
-#include <linux/slab.h>
-#include <linux/init.h>
-#include <linux/list.h>
-#include <linux/interrupt.h>
-#include <linux/proc_fs.h>
-#include <linux/mm.h>
-#include <linux/moduleparam.h>
-#include <linux/device.h>
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-#include <linux/usb/otg.h>
-#include <linux/dma-mapping.h>
-#include <linux/platform_device.h>
-#include <linux/fsl_devices.h>
-#include <linux/dmapool.h>
-
-#include <asm/byteorder.h>
-#include <asm/io.h>
-#include <asm/system.h>
-#include <asm/unaligned.h>
-#include <asm/dma.h>
-
-#include "fsl_usb2_udc.h"
-
-#define DRIVER_DESC "Freescale High-Speed USB SOC Device Controller driver"
-#define DRIVER_AUTHOR "Li Yang/Jiang Bo"
-#define DRIVER_VERSION "Apr 20, 2007"
-
-#define DMA_ADDR_INVALID (~(dma_addr_t)0)
-
-static const char driver_name[] = "fsl-usb2-udc";
-static const char driver_desc[] = DRIVER_DESC;
-
-static struct usb_dr_device *dr_regs;
-static struct usb_sys_interface *usb_sys_regs;
-
-/* it is initialized in probe() */
-static struct fsl_udc *udc_controller = NULL;
-
-static const struct usb_endpoint_descriptor
-fsl_ep0_desc = {
- .bLength = USB_DT_ENDPOINT_SIZE,
- .bDescriptorType = USB_DT_ENDPOINT,
- .bEndpointAddress = 0,
- .bmAttributes = USB_ENDPOINT_XFER_CONTROL,
- .wMaxPacketSize = USB_MAX_CTRL_PAYLOAD,
-};
-
-static void fsl_ep_fifo_flush(struct usb_ep *_ep);
-
-#ifdef CONFIG_PPC32
-#define fsl_readl(addr) in_le32(addr)
-#define fsl_writel(val32, addr) out_le32(addr, val32)
-#else
-#define fsl_readl(addr) readl(addr)
-#define fsl_writel(val32, addr) writel(val32, addr)
-#endif
-
-/********************************************************************
- * Internal Used Function
-********************************************************************/
-/*-----------------------------------------------------------------
- * done() - retire a request; caller blocked irqs
- * @status : request status to be set, only works when
- * request is still in progress.
- *--------------------------------------------------------------*/
-static void done(struct fsl_ep *ep, struct fsl_req *req, int status)
-{
- struct fsl_udc *udc = NULL;
- unsigned char stopped = ep->stopped;
- struct ep_td_struct *curr_td, *next_td;
- int j;
-
- udc = (struct fsl_udc *)ep->udc;
- /* Removed the req from fsl_ep->queue */
- list_del_init(&req->queue);
-
- /* req.status should be set as -EINPROGRESS in ep_queue() */
- if (req->req.status == -EINPROGRESS)
- req->req.status = status;
- else
- status = req->req.status;
-
- /* Free dtd for the request */
- next_td = req->head;
- for (j = 0; j < req->dtd_count; j++) {
- curr_td = next_td;
- if (j != req->dtd_count - 1) {
- next_td = curr_td->next_td_virt;
- }
- dma_pool_free(udc->td_pool, curr_td, curr_td->td_dma);
- }
-
- if (req->mapped) {
- dma_unmap_single(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- ep_is_in(ep)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->req.dma = DMA_ADDR_INVALID;
- req->mapped = 0;
- } else
- dma_sync_single_for_cpu(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- ep_is_in(ep)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
-
- if (status && (status != -ESHUTDOWN))
- VDBG("complete %s req %p stat %d len %u/%u",
- ep->ep.name, &req->req, status,
- req->req.actual, req->req.length);
-
- ep->stopped = 1;
-
- spin_unlock(&ep->udc->lock);
- /* complete() is from gadget layer,
- * eg fsg->bulk_in_complete() */
- if (req->req.complete)
- req->req.complete(&ep->ep, &req->req);
-
- spin_lock(&ep->udc->lock);
- ep->stopped = stopped;
-}
-
-/*-----------------------------------------------------------------
- * nuke(): delete all requests related to this ep
- * called with spinlock held
- *--------------------------------------------------------------*/
-static void nuke(struct fsl_ep *ep, int status)
-{
- ep->stopped = 1;
-
- /* Flush fifo */
- fsl_ep_fifo_flush(&ep->ep);
-
- /* Whether this eq has request linked */
- while (!list_empty(&ep->queue)) {
- struct fsl_req *req = NULL;
-
- req = list_entry(ep->queue.next, struct fsl_req, queue);
- done(ep, req, status);
- }
-}
-
-/*------------------------------------------------------------------
- Internal Hardware related function
- ------------------------------------------------------------------*/
-
-static int dr_controller_setup(struct fsl_udc *udc)
-{
- unsigned int tmp = 0, portctrl = 0, ctrl = 0;
- unsigned long timeout;
-#define FSL_UDC_RESET_TIMEOUT 1000
-
- /* Stop and reset the usb controller */
- tmp = fsl_readl(&dr_regs->usbcmd);
- tmp &= ~USB_CMD_RUN_STOP;
- fsl_writel(tmp, &dr_regs->usbcmd);
-
- tmp = fsl_readl(&dr_regs->usbcmd);
- tmp |= USB_CMD_CTRL_RESET;
- fsl_writel(tmp, &dr_regs->usbcmd);
-
- /* Wait for reset to complete */
- timeout = jiffies + FSL_UDC_RESET_TIMEOUT;
- while (fsl_readl(&dr_regs->usbcmd) & USB_CMD_CTRL_RESET) {
- if (time_after(jiffies, timeout)) {
- ERR("udc reset timeout!\n");
- return -ETIMEDOUT;
- }
- cpu_relax();
- }
-
- /* Set the controller as device mode */
- tmp = fsl_readl(&dr_regs->usbmode);
- tmp |= USB_MODE_CTRL_MODE_DEVICE;
- /* Disable Setup Lockout */
- tmp |= USB_MODE_SETUP_LOCK_OFF;
- fsl_writel(tmp, &dr_regs->usbmode);
-
- /* Clear the setup status */
- fsl_writel(0, &dr_regs->usbsts);
-
- tmp = udc->ep_qh_dma;
- tmp &= USB_EP_LIST_ADDRESS_MASK;
- fsl_writel(tmp, &dr_regs->endpointlistaddr);
-
- VDBG("vir[qh_base] is %p phy[qh_base] is 0x%8x reg is 0x%8x",
- udc->ep_qh, (int)tmp,
- fsl_readl(&dr_regs->endpointlistaddr));
-
- /* Config PHY interface */
- portctrl = fsl_readl(&dr_regs->portsc1);
- portctrl &= ~(PORTSCX_PHY_TYPE_SEL | PORTSCX_PORT_WIDTH);
- switch (udc->phy_mode) {
- case FSL_USB2_PHY_ULPI:
- portctrl |= PORTSCX_PTS_ULPI;
- break;
- case FSL_USB2_PHY_UTMI_WIDE:
- portctrl |= PORTSCX_PTW_16BIT;
- /* fall through */
- case FSL_USB2_PHY_UTMI:
- portctrl |= PORTSCX_PTS_UTMI;
- break;
- case FSL_USB2_PHY_SERIAL:
- portctrl |= PORTSCX_PTS_FSLS;
- break;
- default:
- return -EINVAL;
- }
- fsl_writel(portctrl, &dr_regs->portsc1);
-
- /* Config control enable i/o output, cpu endian register */
- ctrl = __raw_readl(&usb_sys_regs->control);
- ctrl |= USB_CTRL_IOENB;
- __raw_writel(ctrl, &usb_sys_regs->control);
-
-#if defined(CONFIG_PPC32) && !defined(CONFIG_NOT_COHERENT_CACHE)
- /* Turn on cache snooping hardware, since some PowerPC platforms
- * wholly rely on hardware to deal with cache coherent. */
-
- /* Setup Snooping for all the 4GB space */
- tmp = SNOOP_SIZE_2GB; /* starts from 0x0, size 2G */
- __raw_writel(tmp, &usb_sys_regs->snoop1);
- tmp |= 0x80000000; /* starts from 0x8000000, size 2G */
- __raw_writel(tmp, &usb_sys_regs->snoop2);
-#endif
-
- return 0;
-}
-
-/* Enable DR irq and set controller to run state */
-static void dr_controller_run(struct fsl_udc *udc)
-{
- u32 temp;
-
- /* Enable DR irq reg */
- temp = USB_INTR_INT_EN | USB_INTR_ERR_INT_EN
- | USB_INTR_PTC_DETECT_EN | USB_INTR_RESET_EN
- | USB_INTR_DEVICE_SUSPEND | USB_INTR_SYS_ERR_EN;
-
- fsl_writel(temp, &dr_regs->usbintr);
-
- /* Clear stopped bit */
- udc->stopped = 0;
-
- /* Set the controller as device mode */
- temp = fsl_readl(&dr_regs->usbmode);
- temp |= USB_MODE_CTRL_MODE_DEVICE;
- fsl_writel(temp, &dr_regs->usbmode);
-
- /* Set controller to Run */
- temp = fsl_readl(&dr_regs->usbcmd);
- temp |= USB_CMD_RUN_STOP;
- fsl_writel(temp, &dr_regs->usbcmd);
-
- return;
-}
-
-static void dr_controller_stop(struct fsl_udc *udc)
-{
- unsigned int tmp;
-
- /* disable all INTR */
- fsl_writel(0, &dr_regs->usbintr);
-
- /* Set stopped bit for isr */
- udc->stopped = 1;
-
- /* disable IO output */
-/* usb_sys_regs->control = 0; */
-
- /* set controller to Stop */
- tmp = fsl_readl(&dr_regs->usbcmd);
- tmp &= ~USB_CMD_RUN_STOP;
- fsl_writel(tmp, &dr_regs->usbcmd);
-
- return;
-}
-
-static void dr_ep_setup(unsigned char ep_num, unsigned char dir,
- unsigned char ep_type)
-{
- unsigned int tmp_epctrl = 0;
-
- tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
- if (dir) {
- if (ep_num)
- tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
- tmp_epctrl |= EPCTRL_TX_ENABLE;
- tmp_epctrl |= ((unsigned int)(ep_type)
- << EPCTRL_TX_EP_TYPE_SHIFT);
- } else {
- if (ep_num)
- tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
- tmp_epctrl |= EPCTRL_RX_ENABLE;
- tmp_epctrl |= ((unsigned int)(ep_type)
- << EPCTRL_RX_EP_TYPE_SHIFT);
- }
-
- fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
-}
-
-static void
-dr_ep_change_stall(unsigned char ep_num, unsigned char dir, int value)
-{
- u32 tmp_epctrl = 0;
-
- tmp_epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
-
- if (value) {
- /* set the stall bit */
- if (dir)
- tmp_epctrl |= EPCTRL_TX_EP_STALL;
- else
- tmp_epctrl |= EPCTRL_RX_EP_STALL;
- } else {
- /* clear the stall bit and reset data toggle */
- if (dir) {
- tmp_epctrl &= ~EPCTRL_TX_EP_STALL;
- tmp_epctrl |= EPCTRL_TX_DATA_TOGGLE_RST;
- } else {
- tmp_epctrl &= ~EPCTRL_RX_EP_STALL;
- tmp_epctrl |= EPCTRL_RX_DATA_TOGGLE_RST;
- }
- }
- fsl_writel(tmp_epctrl, &dr_regs->endptctrl[ep_num]);
-}
-
-/* Get stall status of a specific ep
- Return: 0: not stalled; 1:stalled */
-static int dr_ep_get_stall(unsigned char ep_num, unsigned char dir)
-{
- u32 epctrl;
-
- epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
- if (dir)
- return (epctrl & EPCTRL_TX_EP_STALL) ? 1 : 0;
- else
- return (epctrl & EPCTRL_RX_EP_STALL) ? 1 : 0;
-}
-
-/********************************************************************
- Internal Structure Build up functions
-********************************************************************/
-
-/*------------------------------------------------------------------
-* struct_ep_qh_setup(): set the Endpoint Capabilites field of QH
- * @zlt: Zero Length Termination Select (1: disable; 0: enable)
- * @mult: Mult field
- ------------------------------------------------------------------*/
-static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
- unsigned char dir, unsigned char ep_type,
- unsigned int max_pkt_len,
- unsigned int zlt, unsigned char mult)
-{
- struct ep_queue_head *p_QH = &udc->ep_qh[2 * ep_num + dir];
- unsigned int tmp = 0;
-
- /* set the Endpoint Capabilites in QH */
- switch (ep_type) {
- case USB_ENDPOINT_XFER_CONTROL:
- /* Interrupt On Setup (IOS). for control ep */
- tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
- | EP_QUEUE_HEAD_IOS;
- break;
- case USB_ENDPOINT_XFER_ISOC:
- tmp = (max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS)
- | (mult << EP_QUEUE_HEAD_MULT_POS);
- break;
- case USB_ENDPOINT_XFER_BULK:
- case USB_ENDPOINT_XFER_INT:
- tmp = max_pkt_len << EP_QUEUE_HEAD_MAX_PKT_LEN_POS;
- break;
- default:
- VDBG("error ep type is %d", ep_type);
- return;
- }
- if (zlt)
- tmp |= EP_QUEUE_HEAD_ZLT_SEL;
-
- p_QH->max_pkt_length = cpu_to_le32(tmp);
- p_QH->next_dtd_ptr = 1;
- p_QH->size_ioc_int_sts = 0;
-
- return;
-}
-
-/* Setup qh structure and ep register for ep0. */
-static void ep0_setup(struct fsl_udc *udc)
-{
- /* the intialization of an ep includes: fields in QH, Regs,
- * fsl_ep struct */
- struct_ep_qh_setup(udc, 0, USB_RECV, USB_ENDPOINT_XFER_CONTROL,
- USB_MAX_CTRL_PAYLOAD, 0, 0);
- struct_ep_qh_setup(udc, 0, USB_SEND, USB_ENDPOINT_XFER_CONTROL,
- USB_MAX_CTRL_PAYLOAD, 0, 0);
- dr_ep_setup(0, USB_RECV, USB_ENDPOINT_XFER_CONTROL);
- dr_ep_setup(0, USB_SEND, USB_ENDPOINT_XFER_CONTROL);
-
- return;
-
-}
-
-/***********************************************************************
- Endpoint Management Functions
-***********************************************************************/
-
-/*-------------------------------------------------------------------------
- * when configurations are set, or when interface settings change
- * for example the do_set_interface() in gadget layer,
- * the driver will enable or disable the relevant endpoints
- * ep0 doesn't use this routine. It is always enabled.
--------------------------------------------------------------------------*/
-static int fsl_ep_enable(struct usb_ep *_ep,
- const struct usb_endpoint_descriptor *desc)
-{
- struct fsl_udc *udc = NULL;
- struct fsl_ep *ep = NULL;
- unsigned short max = 0;
- unsigned char mult = 0, zlt;
- int retval = -EINVAL;
- unsigned long flags = 0;
-
- ep = container_of(_ep, struct fsl_ep, ep);
-
- /* catch various bogus parameters */
- if (!_ep || !desc || ep->desc
- || (desc->bDescriptorType != USB_DT_ENDPOINT))
- return -EINVAL;
-
- udc = ep->udc;
-
- if (!udc->driver || (udc->gadget.speed == USB_SPEED_UNKNOWN))
- return -ESHUTDOWN;
-
- max = le16_to_cpu(desc->wMaxPacketSize);
-
- /* Disable automatic zlp generation. Driver is reponsible to indicate
- * explicitly through req->req.zero. This is needed to enable multi-td
- * request. */
- zlt = 1;
-
- /* Assume the max packet size from gadget is always correct */
- switch (desc->bmAttributes & 0x03) {
- case USB_ENDPOINT_XFER_CONTROL:
- case USB_ENDPOINT_XFER_BULK:
- case USB_ENDPOINT_XFER_INT:
- /* mult = 0. Execute N Transactions as demonstrated by
- * the USB variable length packet protocol where N is
- * computed using the Maximum Packet Length (dQH) and
- * the Total Bytes field (dTD) */
- mult = 0;
- break;
- case USB_ENDPOINT_XFER_ISOC:
- /* Calculate transactions needed for high bandwidth iso */
- mult = (unsigned char)(1 + ((max >> 11) & 0x03));
- max = max & 0x8ff; /* bit 0~10 */
- /* 3 transactions at most */
- if (mult > 3)
- goto en_done;
- break;
- default:
- goto en_done;
- }
-
- spin_lock_irqsave(&udc->lock, flags);
- ep->ep.maxpacket = max;
- ep->desc = desc;
- ep->stopped = 0;
-
- /* Controller related setup */
- /* Init EPx Queue Head (Ep Capabilites field in QH
- * according to max, zlt, mult) */
- struct_ep_qh_setup(udc, (unsigned char) ep_index(ep),
- (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
- ? USB_SEND : USB_RECV),
- (unsigned char) (desc->bmAttributes
- & USB_ENDPOINT_XFERTYPE_MASK),
- max, zlt, mult);
-
- /* Init endpoint ctrl register */
- dr_ep_setup((unsigned char) ep_index(ep),
- (unsigned char) ((desc->bEndpointAddress & USB_DIR_IN)
- ? USB_SEND : USB_RECV),
- (unsigned char) (desc->bmAttributes
- & USB_ENDPOINT_XFERTYPE_MASK));
-
- spin_unlock_irqrestore(&udc->lock, flags);
- retval = 0;
-
- VDBG("enabled %s (ep%d%s) maxpacket %d",ep->ep.name,
- ep->desc->bEndpointAddress & 0x0f,
- (desc->bEndpointAddress & USB_DIR_IN)
- ? "in" : "out", max);
-en_done:
- return retval;
-}
-
-/*---------------------------------------------------------------------
- * @ep : the ep being unconfigured. May not be ep0
- * Any pending and uncomplete req will complete with status (-ESHUTDOWN)
-*---------------------------------------------------------------------*/
-static int fsl_ep_disable(struct usb_ep *_ep)
-{
- struct fsl_udc *udc = NULL;
- struct fsl_ep *ep = NULL;
- unsigned long flags = 0;
- u32 epctrl;
- int ep_num;
-
- ep = container_of(_ep, struct fsl_ep, ep);
- if (!_ep || !ep->desc) {
- VDBG("%s not enabled", _ep ? ep->ep.name : NULL);
- return -EINVAL;
- }
-
- /* disable ep on controller */
- ep_num = ep_index(ep);
- epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
- if (ep_is_in(ep))
- epctrl &= ~EPCTRL_TX_ENABLE;
- else
- epctrl &= ~EPCTRL_RX_ENABLE;
- fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
-
- udc = (struct fsl_udc *)ep->udc;
- spin_lock_irqsave(&udc->lock, flags);
-
- /* nuke all pending requests (does flush) */
- nuke(ep, -ESHUTDOWN);
-
- ep->desc = NULL;
- ep->stopped = 1;
- spin_unlock_irqrestore(&udc->lock, flags);
-
- VDBG("disabled %s OK", _ep->name);
- return 0;
-}
-
-/*---------------------------------------------------------------------
- * allocate a request object used by this endpoint
- * the main operation is to insert the req->queue to the eq->queue
- * Returns the request, or null if one could not be allocated
-*---------------------------------------------------------------------*/
-static struct usb_request *
-fsl_alloc_request(struct usb_ep *_ep, gfp_t gfp_flags)
-{
- struct fsl_req *req = NULL;
-
- req = kzalloc(sizeof *req, gfp_flags);
- if (!req)
- return NULL;
-
- req->req.dma = DMA_ADDR_INVALID;
- INIT_LIST_HEAD(&req->queue);
-
- return &req->req;
-}
-
-static void fsl_free_request(struct usb_ep *_ep, struct usb_request *_req)
-{
- struct fsl_req *req = NULL;
-
- req = container_of(_req, struct fsl_req, req);
-
- if (_req)
- kfree(req);
-}
-
-/*-------------------------------------------------------------------------*/
-static void fsl_queue_td(struct fsl_ep *ep, struct fsl_req *req)
-{
- int i = ep_index(ep) * 2 + ep_is_in(ep);
- u32 temp, bitmask, tmp_stat;
- struct ep_queue_head *dQH = &ep->udc->ep_qh[i];
-
- /* VDBG("QH addr Register 0x%8x", dr_regs->endpointlistaddr);
- VDBG("ep_qh[%d] addr is 0x%8x", i, (u32)&(ep->udc->ep_qh[i])); */
-
- bitmask = ep_is_in(ep)
- ? (1 << (ep_index(ep) + 16))
- : (1 << (ep_index(ep)));
-
- /* check if the pipe is empty */
- if (!(list_empty(&ep->queue))) {
- /* Add td to the end */
- struct fsl_req *lastreq;
- lastreq = list_entry(ep->queue.prev, struct fsl_req, queue);
- lastreq->tail->next_td_ptr =
- cpu_to_le32(req->head->td_dma & DTD_ADDR_MASK);
- /* Read prime bit, if 1 goto done */
- if (fsl_readl(&dr_regs->endpointprime) & bitmask)
- goto out;
-
- do {
- /* Set ATDTW bit in USBCMD */
- temp = fsl_readl(&dr_regs->usbcmd);
- fsl_writel(temp | USB_CMD_ATDTW, &dr_regs->usbcmd);
-
- /* Read correct status bit */
- tmp_stat = fsl_readl(&dr_regs->endptstatus) & bitmask;
-
- } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_ATDTW));
-
- /* Write ATDTW bit to 0 */
- temp = fsl_readl(&dr_regs->usbcmd);
- fsl_writel(temp & ~USB_CMD_ATDTW, &dr_regs->usbcmd);
-
- if (tmp_stat)
- goto out;
- }
-
- /* Write dQH next pointer and terminate bit to 0 */
- temp = req->head->td_dma & EP_QUEUE_HEAD_NEXT_POINTER_MASK;
- dQH->next_dtd_ptr = cpu_to_le32(temp);
-
- /* Clear active and halt bit */
- temp = cpu_to_le32(~(EP_QUEUE_HEAD_STATUS_ACTIVE
- | EP_QUEUE_HEAD_STATUS_HALT));
- dQH->size_ioc_int_sts &= temp;
-
- /* Ensure that updates to the QH will occure before priming. */
- wmb();
-
- /* Prime endpoint by writing 1 to ENDPTPRIME */
- temp = ep_is_in(ep)
- ? (1 << (ep_index(ep) + 16))
- : (1 << (ep_index(ep)));
- fsl_writel(temp, &dr_regs->endpointprime);
-out:
- return;
-}
-
-/* Fill in the dTD structure
- * @req: request that the transfer belongs to
- * @length: return actually data length of the dTD
- * @dma: return dma address of the dTD
- * @is_last: return flag if it is the last dTD of the request
- * return: pointer to the built dTD */
-static struct ep_td_struct *fsl_build_dtd(struct fsl_req *req, unsigned *length,
- dma_addr_t *dma, int *is_last)
-{
- u32 swap_temp;
- struct ep_td_struct *dtd;
-
- /* how big will this transfer be? */
- *length = min(req->req.length - req->req.actual,
- (unsigned)EP_MAX_LENGTH_TRANSFER);
-
- dtd = dma_pool_alloc(udc_controller->td_pool, GFP_KERNEL, dma);
- if (dtd == NULL)
- return dtd;
-
- dtd->td_dma = *dma;
- /* Clear reserved field */
- swap_temp = cpu_to_le32(dtd->size_ioc_sts);
- swap_temp &= ~DTD_RESERVED_FIELDS;
- dtd->size_ioc_sts = cpu_to_le32(swap_temp);
-
- /* Init all of buffer page pointers */
- swap_temp = (u32) (req->req.dma + req->req.actual);
- dtd->buff_ptr0 = cpu_to_le32(swap_temp);
- dtd->buff_ptr1 = cpu_to_le32(swap_temp + 0x1000);
- dtd->buff_ptr2 = cpu_to_le32(swap_temp + 0x2000);
- dtd->buff_ptr3 = cpu_to_le32(swap_temp + 0x3000);
- dtd->buff_ptr4 = cpu_to_le32(swap_temp + 0x4000);
-
- req->req.actual += *length;
-
- /* zlp is needed if req->req.zero is set */
- if (req->req.zero) {
- if (*length == 0 || (*length % req->ep->ep.maxpacket) != 0)
- *is_last = 1;
- else
- *is_last = 0;
- } else if (req->req.length == req->req.actual)
- *is_last = 1;
- else
- *is_last = 0;
-
- if ((*is_last) == 0)
- VDBG("multi-dtd request!");
- /* Fill in the transfer size; set active bit */
- swap_temp = ((*length << DTD_LENGTH_BIT_POS) | DTD_STATUS_ACTIVE);
-
- /* Enable interrupt for the last dtd of a request */
- if (*is_last && !req->req.no_interrupt)
- swap_temp |= DTD_IOC;
-
- dtd->size_ioc_sts = cpu_to_le32(swap_temp);
-
- mb();
-
- VDBG("length = %d address= 0x%x", *length, (int)*dma);
-
- return dtd;
-}
-
-/* Generate dtd chain for a request */
-static int fsl_req_to_dtd(struct fsl_req *req)
-{
- unsigned count;
- int is_last;
- int is_first =1;
- struct ep_td_struct *last_dtd = NULL, *dtd;
- dma_addr_t dma;
-
- do {
- dtd = fsl_build_dtd(req, &count, &dma, &is_last);
- if (dtd == NULL)
- return -ENOMEM;
-
- if (is_first) {
- is_first = 0;
- req->head = dtd;
- } else {
- last_dtd->next_td_ptr = cpu_to_le32(dma);
- last_dtd->next_td_virt = dtd;
- }
- last_dtd = dtd;
-
- req->dtd_count++;
- } while (!is_last);
-
- dtd->next_td_ptr = cpu_to_le32(DTD_NEXT_TERMINATE);
-
- req->tail = dtd;
-
- return 0;
-}
-
-/* queues (submits) an I/O request to an endpoint */
-static int
-fsl_ep_queue(struct usb_ep *_ep, struct usb_request *_req, gfp_t gfp_flags)
-{
- struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
- struct fsl_req *req = container_of(_req, struct fsl_req, req);
- struct fsl_udc *udc;
- unsigned long flags;
- int is_iso = 0;
-
- /* catch various bogus parameters */
- if (!_req || !req->req.complete || !req->req.buf
- || !list_empty(&req->queue)) {
- VDBG("%s, bad params", __func__);
- return -EINVAL;
- }
- if (unlikely(!_ep || !ep->desc)) {
- VDBG("%s, bad ep", __func__);
- return -EINVAL;
- }
- if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
- if (req->req.length > ep->ep.maxpacket)
- return -EMSGSIZE;
- is_iso = 1;
- }
-
- udc = ep->udc;
- if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
- return -ESHUTDOWN;
-
- req->ep = ep;
-
- /* map virtual address to hardware */
- if (req->req.dma == DMA_ADDR_INVALID) {
- req->req.dma = dma_map_single(ep->udc->gadget.dev.parent,
- req->req.buf,
- req->req.length, ep_is_in(ep)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->mapped = 1;
- } else {
- dma_sync_single_for_device(ep->udc->gadget.dev.parent,
- req->req.dma, req->req.length,
- ep_is_in(ep)
- ? DMA_TO_DEVICE
- : DMA_FROM_DEVICE);
- req->mapped = 0;
- }
-
- req->req.status = -EINPROGRESS;
- req->req.actual = 0;
- req->dtd_count = 0;
-
- spin_lock_irqsave(&udc->lock, flags);
-
- /* build dtds and push them to device queue */
- if (!fsl_req_to_dtd(req)) {
- fsl_queue_td(ep, req);
- } else {
- spin_unlock_irqrestore(&udc->lock, flags);
- return -ENOMEM;
- }
-
- /* Update ep0 state */
- if ((ep_index(ep) == 0))
- udc->ep0_state = DATA_STATE_XMIT;
-
- /* irq handler advances the queue */
- if (req != NULL)
- list_add_tail(&req->queue, &ep->queue);
- spin_unlock_irqrestore(&udc->lock, flags);
-
- return 0;
-}
-
-/* dequeues (cancels, unlinks) an I/O request from an endpoint */
-static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
- struct fsl_ep *ep = container_of(_ep, struct fsl_ep, ep);
- struct fsl_req *req;
- unsigned long flags;
- int ep_num, stopped, ret = 0;
- u32 epctrl;
-
- if (!_ep || !_req)
- return -EINVAL;
-
- spin_lock_irqsave(&ep->udc->lock, flags);
- stopped = ep->stopped;
-
- /* Stop the ep before we deal with the queue */
- ep->stopped = 1;
- ep_num = ep_index(ep);
- epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
- if (ep_is_in(ep))
- epctrl &= ~EPCTRL_TX_ENABLE;
- else
- epctrl &= ~EPCTRL_RX_ENABLE;
- fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
-
- /* make sure it's actually queued on this endpoint */
- list_for_each_entry(req, &ep->queue, queue) {
- if (&req->req == _req)
- break;
- }
- if (&req->req != _req) {
- ret = -EINVAL;
- goto out;
- }
-
- /* The request is in progress, or completed but not dequeued */
- if (ep->queue.next == &req->queue) {
- _req->status = -ECONNRESET;
- fsl_ep_fifo_flush(_ep); /* flush current transfer */
-
- /* The request isn't the last request in this ep queue */
- if (req->queue.next != &ep->queue) {
- struct ep_queue_head *qh;
- struct fsl_req *next_req;
-
- qh = ep->qh;
- next_req = list_entry(req->queue.next, struct fsl_req,
- queue);
-
- /* Point the QH to the first TD of next request */
- fsl_writel((u32) next_req->head, &qh->curr_dtd_ptr);
- }
-
- /* The request hasn't been processed, patch up the TD chain */
- } else {
- struct fsl_req *prev_req;
-
- prev_req = list_entry(req->queue.prev, struct fsl_req, queue);
- fsl_writel(fsl_readl(&req->tail->next_td_ptr),
- &prev_req->tail->next_td_ptr);
-
- }
-
- done(ep, req, -ECONNRESET);
-
- /* Enable EP */
-out: epctrl = fsl_readl(&dr_regs->endptctrl[ep_num]);
- if (ep_is_in(ep))
- epctrl |= EPCTRL_TX_ENABLE;
- else
- epctrl |= EPCTRL_RX_ENABLE;
- fsl_writel(epctrl, &dr_regs->endptctrl[ep_num]);
- ep->stopped = stopped;
-
- spin_unlock_irqrestore(&ep->udc->lock, flags);
- return ret;
-}
-
-/*-------------------------------------------------------------------------*/
-
-/*-----------------------------------------------------------------
- * modify the endpoint halt feature
- * @ep: the non-isochronous endpoint being stalled
- * @value: 1--set halt 0--clear halt
- * Returns zero, or a negative error code.
-*----------------------------------------------------------------*/
-static int fsl_ep_set_halt(struct usb_ep *_ep, int value)
-{
- struct fsl_ep *ep = NULL;
- unsigned long flags = 0;
- int status = -EOPNOTSUPP; /* operation not supported */
- unsigned char ep_dir = 0, ep_num = 0;
- struct fsl_udc *udc = NULL;
-
- ep = container_of(_ep, struct fsl_ep, ep);
- udc = ep->udc;
- if (!_ep || !ep->desc) {
- status = -EINVAL;
- goto out;
- }
-
- if (ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC) {
- status = -EOPNOTSUPP;
- goto out;
- }
-
- /* Attempt to halt IN ep will fail if any transfer requests
- * are still queue */
- if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
- status = -EAGAIN;
- goto out;
- }
-
- status = 0;
- ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
- ep_num = (unsigned char)(ep_index(ep));
- spin_lock_irqsave(&ep->udc->lock, flags);
- dr_ep_change_stall(ep_num, ep_dir, value);
- spin_unlock_irqrestore(&ep->udc->lock, flags);
-
- if (ep_index(ep) == 0) {
- udc->ep0_state = WAIT_FOR_SETUP;
- udc->ep0_dir = 0;
- }
-out:
- VDBG(" %s %s halt stat %d", ep->ep.name,
- value ? "set" : "clear", status);
-
- return status;
-}
-
-static void fsl_ep_fifo_flush(struct usb_ep *_ep)
-{
- struct fsl_ep *ep;
- int ep_num, ep_dir;
- u32 bits;
- unsigned long timeout;
-#define FSL_UDC_FLUSH_TIMEOUT 1000
-
- if (!_ep) {
- return;
- } else {
- ep = container_of(_ep, struct fsl_ep, ep);
- if (!ep->desc)
- return;
- }
- ep_num = ep_index(ep);
- ep_dir = ep_is_in(ep) ? USB_SEND : USB_RECV;
-
- if (ep_num == 0)
- bits = (1 << 16) | 1;
- else if (ep_dir == USB_SEND)
- bits = 1 << (16 + ep_num);
- else
- bits = 1 << ep_num;
-
- timeout = jiffies + FSL_UDC_FLUSH_TIMEOUT;
- do {
- fsl_writel(bits, &dr_regs->endptflush);
-
- /* Wait until flush complete */
- while (fsl_readl(&dr_regs->endptflush)) {
- if (time_after(jiffies, timeout)) {
- ERR("ep flush timeout\n");
- return;
- }
- cpu_relax();
- }
- /* See if we need to flush again */
- } while (fsl_readl(&dr_regs->endptstatus) & bits);
-}
-
-static struct usb_ep_ops fsl_ep_ops = {
- .enable = fsl_ep_enable,
- .disable = fsl_ep_disable,
-
- .alloc_request = fsl_alloc_request,
- .free_request = fsl_free_request,
-
- .queue = fsl_ep_queue,
- .dequeue = fsl_ep_dequeue,
-
- .set_halt = fsl_ep_set_halt,
- .fifo_flush = fsl_ep_fifo_flush, /* flush fifo */
-};
-
-/*-------------------------------------------------------------------------
- Gadget Driver Layer Operations
--------------------------------------------------------------------------*/
-
-/*----------------------------------------------------------------------
- * Get the current frame number (from DR frame_index Reg )
- *----------------------------------------------------------------------*/
-static int fsl_get_frame(struct usb_gadget *gadget)
-{
- return (int)(fsl_readl(&dr_regs->frindex) & USB_FRINDEX_MASKS);
-}
-
-/*-----------------------------------------------------------------------
- * Tries to wake up the host connected to this gadget
- -----------------------------------------------------------------------*/
-static int fsl_wakeup(struct usb_gadget *gadget)
-{
- struct fsl_udc *udc = container_of(gadget, struct fsl_udc, gadget);
- u32 portsc;
-
- /* Remote wakeup feature not enabled by host */
- if (!udc->remote_wakeup)
- return -ENOTSUPP;
-
- portsc = fsl_readl(&dr_regs->portsc1);
- /* not suspended? */
- if (!(portsc & PORTSCX_PORT_SUSPEND))
- return 0;
- /* trigger force resume */
- portsc |= PORTSCX_PORT_FORCE_RESUME;
- fsl_writel(portsc, &dr_regs->portsc1);
- return 0;
-}
-
-static int can_pullup(struct fsl_udc *udc)
-{
- return udc->driver && udc->softconnect && udc->vbus_active;
-}
-
-/* Notify controller that VBUS is powered, Called by whatever
- detects VBUS sessions */
-static int fsl_vbus_session(struct usb_gadget *gadget, int is_active)
-{
- struct fsl_udc *udc;
- unsigned long flags;
-
- udc = container_of(gadget, struct fsl_udc, gadget);
- spin_lock_irqsave(&udc->lock, flags);
- VDBG("VBUS %s", is_active ? "on" : "off");
- udc->vbus_active = (is_active != 0);
- if (can_pullup(udc))
- fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
- &dr_regs->usbcmd);
- else
- fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
- &dr_regs->usbcmd);
- spin_unlock_irqrestore(&udc->lock, flags);
- return 0;
-}
-
-/* constrain controller's VBUS power usage
- * This call is used by gadget drivers during SET_CONFIGURATION calls,
- * reporting how much power the device may consume. For example, this
- * could affect how quickly batteries are recharged.
- *
- * Returns zero on success, else negative errno.
- */
-static int fsl_vbus_draw(struct usb_gadget *gadget, unsigned mA)
-{
- struct fsl_udc *udc;
-
- udc = container_of(gadget, struct fsl_udc, gadget);
- if (udc->transceiver)
- return otg_set_power(udc->transceiver, mA);
- return -ENOTSUPP;
-}
-
-/* Change Data+ pullup status
- * this func is used by usb_gadget_connect/disconnet
- */
-static int fsl_pullup(struct usb_gadget *gadget, int is_on)
-{
- struct fsl_udc *udc;
-
- udc = container_of(gadget, struct fsl_udc, gadget);
- udc->softconnect = (is_on != 0);
- if (can_pullup(udc))
- fsl_writel((fsl_readl(&dr_regs->usbcmd) | USB_CMD_RUN_STOP),
- &dr_regs->usbcmd);
- else
- fsl_writel((fsl_readl(&dr_regs->usbcmd) & ~USB_CMD_RUN_STOP),
- &dr_regs->usbcmd);
-
- return 0;
-}
-
-/* defined in gadget.h */
-static struct usb_gadget_ops fsl_gadget_ops = {
- .get_frame = fsl_get_frame,
- .wakeup = fsl_wakeup,
-/* .set_selfpowered = fsl_set_selfpowered, */ /* Always selfpowered */
- .vbus_session = fsl_vbus_session,
- .vbus_draw = fsl_vbus_draw,
- .pullup = fsl_pullup,
-};
-
-/* Set protocol stall on ep0, protocol stall will automatically be cleared
- on new transaction */
-static void ep0stall(struct fsl_udc *udc)
-{
- u32 tmp;
-
- /* must set tx and rx to stall at the same time */
- tmp = fsl_readl(&dr_regs->endptctrl[0]);
- tmp |= EPCTRL_TX_EP_STALL | EPCTRL_RX_EP_STALL;
- fsl_writel(tmp, &dr_regs->endptctrl[0]);
- udc->ep0_state = WAIT_FOR_SETUP;
- udc->ep0_dir = 0;
-}
-
-/* Prime a status phase for ep0 */
-static int ep0_prime_status(struct fsl_udc *udc, int direction)
-{
- struct fsl_req *req = udc->status_req;
- struct fsl_ep *ep;
-
- if (direction == EP_DIR_IN)
- udc->ep0_dir = USB_DIR_IN;
- else
- udc->ep0_dir = USB_DIR_OUT;
-
- ep = &udc->eps[0];
- udc->ep0_state = WAIT_FOR_OUT_STATUS;
-
- req->ep = ep;
- req->req.length = 0;
- req->req.status = -EINPROGRESS;
- req->req.actual = 0;
- req->req.complete = NULL;
- req->dtd_count = 0;
-
- if (fsl_req_to_dtd(req) == 0)
- fsl_queue_td(ep, req);
- else
- return -ENOMEM;
-
- list_add_tail(&req->queue, &ep->queue);
-
- return 0;
-}
-
-static void udc_reset_ep_queue(struct fsl_udc *udc, u8 pipe)
-{
- struct fsl_ep *ep = get_ep_by_pipe(udc, pipe);
-
- if (ep->name)
- nuke(ep, -ESHUTDOWN);
-}
-
-/*
- * ch9 Set address
- */
-static void ch9setaddress(struct fsl_udc *udc, u16 value, u16 index, u16 length)
-{
- /* Save the new address to device struct */
- udc->device_address = (u8) value;
- /* Update usb state */
- udc->usb_state = USB_STATE_ADDRESS;
- /* Status phase */
- if (ep0_prime_status(udc, EP_DIR_IN))
- ep0stall(udc);
-}
-
-/*
- * ch9 Get status
- */
-static void ch9getstatus(struct fsl_udc *udc, u8 request_type, u16 value,
- u16 index, u16 length)
-{
- u16 tmp = 0; /* Status, cpu endian */
- struct fsl_req *req;
- struct fsl_ep *ep;
-
- ep = &udc->eps[0];
-
- if ((request_type & USB_RECIP_MASK) == USB_RECIP_DEVICE) {
- /* Get device status */
- tmp = 1 << USB_DEVICE_SELF_POWERED;
- tmp |= udc->remote_wakeup << USB_DEVICE_REMOTE_WAKEUP;
- } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_INTERFACE) {
- /* Get interface status */
- /* We don't have interface information in udc driver */
- tmp = 0;
- } else if ((request_type & USB_RECIP_MASK) == USB_RECIP_ENDPOINT) {
- /* Get endpoint status */
- struct fsl_ep *target_ep;
-
- target_ep = get_ep_by_pipe(udc, get_pipe_by_windex(index));
-
- /* stall if endpoint doesn't exist */
- if (!target_ep->desc)
- goto stall;
- tmp = dr_ep_get_stall(ep_index(target_ep), ep_is_in(target_ep))
- << USB_ENDPOINT_HALT;
- }
-
- udc->ep0_dir = USB_DIR_IN;
- /* Borrow the per device status_req */
- req = udc->status_req;
- /* Fill in the reqest structure */
- *((u16 *) req->req.buf) = cpu_to_le16(tmp);
- req->ep = ep;
- req->req.length = 2;
- req->req.status = -EINPROGRESS;
- req->req.actual = 0;
- req->req.complete = NULL;
- req->dtd_count = 0;
-
- /* prime the data phase */
- if ((fsl_req_to_dtd(req) == 0))
- fsl_queue_td(ep, req);
- else /* no mem */
- goto stall;
-
- list_add_tail(&req->queue, &ep->queue);
- udc->ep0_state = DATA_STATE_XMIT;
- return;
-stall:
- ep0stall(udc);
-}
-
-static void setup_received_irq(struct fsl_udc *udc,
- struct usb_ctrlrequest *setup)
-{
- u16 wValue = le16_to_cpu(setup->wValue);
- u16 wIndex = le16_to_cpu(setup->wIndex);
- u16 wLength = le16_to_cpu(setup->wLength);
-
- udc_reset_ep_queue(udc, 0);
-
- /* We process some stardard setup requests here */
- switch (setup->bRequest) {
- case USB_REQ_GET_STATUS:
- /* Data+Status phase from udc */
- if ((setup->bRequestType & (USB_DIR_IN | USB_TYPE_MASK))
- != (USB_DIR_IN | USB_TYPE_STANDARD))
- break;
- ch9getstatus(udc, setup->bRequestType, wValue, wIndex, wLength);
- return;
-
- case USB_REQ_SET_ADDRESS:
- /* Status phase from udc */
- if (setup->bRequestType != (USB_DIR_OUT | USB_TYPE_STANDARD
- | USB_RECIP_DEVICE))
- break;
- ch9setaddress(udc, wValue, wIndex, wLength);
- return;
-
- case USB_REQ_CLEAR_FEATURE:
- case USB_REQ_SET_FEATURE:
- /* Status phase from udc */
- {
- int rc = -EOPNOTSUPP;
-
- if ((setup->bRequestType & (USB_RECIP_MASK | USB_TYPE_MASK))
- == (USB_RECIP_ENDPOINT | USB_TYPE_STANDARD)) {
- int pipe = get_pipe_by_windex(wIndex);
- struct fsl_ep *ep;
-
- if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
- break;
- ep = get_ep_by_pipe(udc, pipe);
-
- spin_unlock(&udc->lock);
- rc = fsl_ep_set_halt(&ep->ep,
- (setup->bRequest == USB_REQ_SET_FEATURE)
- ? 1 : 0);
- spin_lock(&udc->lock);
-
- } else if ((setup->bRequestType & (USB_RECIP_MASK
- | USB_TYPE_MASK)) == (USB_RECIP_DEVICE
- | USB_TYPE_STANDARD)) {
- /* Note: The driver has not include OTG support yet.
- * This will be set when OTG support is added */
- if (!gadget_is_otg(&udc->gadget))
- break;
- else if (setup->bRequest == USB_DEVICE_B_HNP_ENABLE)
- udc->gadget.b_hnp_enable = 1;
- else if (setup->bRequest == USB_DEVICE_A_HNP_SUPPORT)
- udc->gadget.a_hnp_support = 1;
- else if (setup->bRequest ==
- USB_DEVICE_A_ALT_HNP_SUPPORT)
- udc->gadget.a_alt_hnp_support = 1;
- else
- break;
- rc = 0;
- } else
- break;
-
- if (rc == 0) {
- if (ep0_prime_status(udc, EP_DIR_IN))
- ep0stall(udc);
- }
- return;
- }
-
- default:
- break;
- }
-
- /* Requests handled by gadget */
- if (wLength) {
- /* Data phase from gadget, status phase from udc */
- udc->ep0_dir = (setup->bRequestType & USB_DIR_IN)
- ? USB_DIR_IN : USB_DIR_OUT;
- spin_unlock(&udc->lock);
- if (udc->driver->setup(&udc->gadget,
- &udc->local_setup_buff) < 0)
- ep0stall(udc);
- spin_lock(&udc->lock);
- udc->ep0_state = (setup->bRequestType & USB_DIR_IN)
- ? DATA_STATE_XMIT : DATA_STATE_RECV;
- } else {
- /* No data phase, IN status from gadget */
- udc->ep0_dir = USB_DIR_IN;
- spin_unlock(&udc->lock);
- if (udc->driver->setup(&udc->gadget,
- &udc->local_setup_buff) < 0)
- ep0stall(udc);
- spin_lock(&udc->lock);
- udc->ep0_state = WAIT_FOR_OUT_STATUS;
- }
-}
-
-/* Process request for Data or Status phase of ep0
- * prime status phase if needed */
-static void ep0_req_complete(struct fsl_udc *udc, struct fsl_ep *ep0,
- struct fsl_req *req)
-{
- if (udc->usb_state == USB_STATE_ADDRESS) {
- /* Set the new address */
- u32 new_address = (u32) udc->device_address;
- fsl_writel(new_address << USB_DEVICE_ADDRESS_BIT_POS,
- &dr_regs->deviceaddr);
- }
-
- done(ep0, req, 0);
-
- switch (udc->ep0_state) {
- case DATA_STATE_XMIT:
- /* receive status phase */
- if (ep0_prime_status(udc, EP_DIR_OUT))
- ep0stall(udc);
- break;
- case DATA_STATE_RECV:
- /* send status phase */
- if (ep0_prime_status(udc, EP_DIR_IN))
- ep0stall(udc);
- break;
- case WAIT_FOR_OUT_STATUS:
- udc->ep0_state = WAIT_FOR_SETUP;
- break;
- case WAIT_FOR_SETUP:
- ERR("Unexpect ep0 packets\n");
- break;
- default:
- ep0stall(udc);
- break;
- }
-}
-
-/* Tripwire mechanism to ensure a setup packet payload is extracted without
- * being corrupted by another incoming setup packet */
-static void tripwire_handler(struct fsl_udc *udc, u8 ep_num, u8 *buffer_ptr)
-{
- u32 temp;
- struct ep_queue_head *qh;
-
- qh = &udc->ep_qh[ep_num * 2 + EP_DIR_OUT];
-
- /* Clear bit in ENDPTSETUPSTAT */
- temp = fsl_readl(&dr_regs->endptsetupstat);
- fsl_writel(temp | (1 << ep_num), &dr_regs->endptsetupstat);
-
- /* while a hazard exists when setup package arrives */
- do {
- /* Set Setup Tripwire */
- temp = fsl_readl(&dr_regs->usbcmd);
- fsl_writel(temp | USB_CMD_SUTW, &dr_regs->usbcmd);
-
- /* Copy the setup packet to local buffer */
- memcpy(buffer_ptr, (u8 *) qh->setup_buffer, 8);
- } while (!(fsl_readl(&dr_regs->usbcmd) & USB_CMD_SUTW));
-
- /* Clear Setup Tripwire */
- temp = fsl_readl(&dr_regs->usbcmd);
- fsl_writel(temp & ~USB_CMD_SUTW, &dr_regs->usbcmd);
-}
-
-/* process-ep_req(): free the completed Tds for this req */
-static int process_ep_req(struct fsl_udc *udc, int pipe,
- struct fsl_req *curr_req)
-{
- struct ep_td_struct *curr_td;
- int td_complete, actual, remaining_length, j, tmp;
- int status = 0;
- int errors = 0;
- struct ep_queue_head *curr_qh = &udc->ep_qh[pipe];
- int direction = pipe % 2;
-
- curr_td = curr_req->head;
- td_complete = 0;
- actual = curr_req->req.length;
-
- for (j = 0; j < curr_req->dtd_count; j++) {
- remaining_length = (le32_to_cpu(curr_td->size_ioc_sts)
- & DTD_PACKET_SIZE)
- >> DTD_LENGTH_BIT_POS;
- actual -= remaining_length;
-
- if ((errors = le32_to_cpu(curr_td->size_ioc_sts) &
- DTD_ERROR_MASK)) {
- if (errors & DTD_STATUS_HALTED) {
- ERR("dTD error %08x QH=%d\n", errors, pipe);
- /* Clear the errors and Halt condition */
- tmp = le32_to_cpu(curr_qh->size_ioc_int_sts);
- tmp &= ~errors;
- curr_qh->size_ioc_int_sts = cpu_to_le32(tmp);
- status = -EPIPE;
- /* FIXME: continue with next queued TD? */
-
- break;
- }
- if (errors & DTD_STATUS_DATA_BUFF_ERR) {
- VDBG("Transfer overflow");
- status = -EPROTO;
- break;
- } else if (errors & DTD_STATUS_TRANSACTION_ERR) {
- VDBG("ISO error");
- status = -EILSEQ;
- break;
- } else
- ERR("Unknown error has occured (0x%x)!\n",
- errors);
-
- } else if (le32_to_cpu(curr_td->size_ioc_sts)
- & DTD_STATUS_ACTIVE) {
- VDBG("Request not complete");
- status = REQ_UNCOMPLETE;
- return status;
- } else if (remaining_length) {
- if (direction) {
- VDBG("Transmit dTD remaining length not zero");
- status = -EPROTO;
- break;
- } else {
- td_complete++;
- break;
- }
- } else {
- td_complete++;
- VDBG("dTD transmitted successful");
- }
-
- if (j != curr_req->dtd_count - 1)
- curr_td = (struct ep_td_struct *)curr_td->next_td_virt;
- }
-
- if (status)
- return status;
-
- curr_req->req.actual = actual;
-
- return 0;
-}
-
-/* Process a DTD completion interrupt */
-static void dtd_complete_irq(struct fsl_udc *udc)
-{
- u32 bit_pos;
- int i, ep_num, direction, bit_mask, status;
- struct fsl_ep *curr_ep;
- struct fsl_req *curr_req, *temp_req;
-
- /* Clear the bits in the register */
- bit_pos = fsl_readl(&dr_regs->endptcomplete);
- fsl_writel(bit_pos, &dr_regs->endptcomplete);
-
- if (!bit_pos)
- return;
-
- for (i = 0; i < udc->max_ep * 2; i++) {
- ep_num = i >> 1;
- direction = i % 2;
-
- bit_mask = 1 << (ep_num + 16 * direction);
-
- if (!(bit_pos & bit_mask))
- continue;
-
- curr_ep = get_ep_by_pipe(udc, i);
-
- /* If the ep is configured */
- if (curr_ep->name == NULL) {
- WARNING("Invalid EP?");
- continue;
- }
-
- /* process the req queue until an uncomplete request */
- list_for_each_entry_safe(curr_req, temp_req, &curr_ep->queue,
- queue) {
- status = process_ep_req(udc, i, curr_req);
-
- VDBG("status of process_ep_req= %d, ep = %d",
- status, ep_num);
- if (status == REQ_UNCOMPLETE)
- break;
- /* write back status to req */
- curr_req->req.status = status;
-
- if (ep_num == 0) {
- ep0_req_complete(udc, curr_ep, curr_req);
- break;
- } else
- done(curr_ep, curr_req, status);
- }
- }
-}
-
-/* Process a port change interrupt */
-static void port_change_irq(struct fsl_udc *udc)
-{
- u32 speed;
-
- /* Bus resetting is finished */
- if (!(fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET)) {
- /* Get the speed */
- speed = (fsl_readl(&dr_regs->portsc1)
- & PORTSCX_PORT_SPEED_MASK);
- switch (speed) {
- case PORTSCX_PORT_SPEED_HIGH:
- udc->gadget.speed = USB_SPEED_HIGH;
- break;
- case PORTSCX_PORT_SPEED_FULL:
- udc->gadget.speed = USB_SPEED_FULL;
- break;
- case PORTSCX_PORT_SPEED_LOW:
- udc->gadget.speed = USB_SPEED_LOW;
- break;
- default:
- udc->gadget.speed = USB_SPEED_UNKNOWN;
- break;
- }
- }
-
- /* Update USB state */
- if (!udc->resume_state)
- udc->usb_state = USB_STATE_DEFAULT;
-}
-
-/* Process suspend interrupt */
-static void suspend_irq(struct fsl_udc *udc)
-{
- udc->resume_state = udc->usb_state;
- udc->usb_state = USB_STATE_SUSPENDED;
-
- /* report suspend to the driver, serial.c does not support this */
- if (udc->driver->suspend)
- udc->driver->suspend(&udc->gadget);
-}
-
-static void bus_resume(struct fsl_udc *udc)
-{
- udc->usb_state = udc->resume_state;
- udc->resume_state = 0;
-
- /* report resume to the driver, serial.c does not support this */
- if (udc->driver->resume)
- udc->driver->resume(&udc->gadget);
-}
-
-/* Clear up all ep queues */
-static int reset_queues(struct fsl_udc *udc)
-{
- u8 pipe;
-
- for (pipe = 0; pipe < udc->max_pipes; pipe++)
- udc_reset_ep_queue(udc, pipe);
-
- /* report disconnect; the driver is already quiesced */
- spin_unlock(&udc->lock);
- udc->driver->disconnect(&udc->gadget);
- spin_lock(&udc->lock);
-
- return 0;
-}
-
-/* Process reset interrupt */
-static void reset_irq(struct fsl_udc *udc)
-{
- u32 temp;
- unsigned long timeout;
-
- /* Clear the device address */
- temp = fsl_readl(&dr_regs->deviceaddr);
- fsl_writel(temp & ~USB_DEVICE_ADDRESS_MASK, &dr_regs->deviceaddr);
-
- udc->device_address = 0;
-
- /* Clear usb state */
- udc->resume_state = 0;
- udc->ep0_dir = 0;
- udc->ep0_state = WAIT_FOR_SETUP;
- udc->remote_wakeup = 0; /* default to 0 on reset */
- udc->gadget.b_hnp_enable = 0;
- udc->gadget.a_hnp_support = 0;
- udc->gadget.a_alt_hnp_support = 0;
-
- /* Clear all the setup token semaphores */
- temp = fsl_readl(&dr_regs->endptsetupstat);
- fsl_writel(temp, &dr_regs->endptsetupstat);
-
- /* Clear all the endpoint complete status bits */
- temp = fsl_readl(&dr_regs->endptcomplete);
- fsl_writel(temp, &dr_regs->endptcomplete);
-
- timeout = jiffies + 100;
- while (fsl_readl(&dr_regs->endpointprime)) {
- /* Wait until all endptprime bits cleared */
- if (time_after(jiffies, timeout)) {
- ERR("Timeout for reset\n");
- break;
- }
- cpu_relax();
- }
-
- /* Write 1s to the flush register */
- fsl_writel(0xffffffff, &dr_regs->endptflush);
-
- if (fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_RESET) {
- VDBG("Bus reset");
- /* Reset all the queues, include XD, dTD, EP queue
- * head and TR Queue */
- reset_queues(udc);
- udc->usb_state = USB_STATE_DEFAULT;
- } else {
- VDBG("Controller reset");
- /* initialize usb hw reg except for regs for EP, not
- * touch usbintr reg */
- dr_controller_setup(udc);
-
- /* Reset all internal used Queues */
- reset_queues(udc);
-
- ep0_setup(udc);
-
- /* Enable DR IRQ reg, Set Run bit, change udc state */
- dr_controller_run(udc);
- udc->usb_state = USB_STATE_ATTACHED;
- }
-}
-
-/*
- * USB device controller interrupt handler
- */
-static irqreturn_t fsl_udc_irq(int irq, void *_udc)
-{
- struct fsl_udc *udc = _udc;
- u32 irq_src;
- irqreturn_t status = IRQ_NONE;
- unsigned long flags;
-
- /* Disable ISR for OTG host mode */
- if (udc->stopped)
- return IRQ_NONE;
- spin_lock_irqsave(&udc->lock, flags);
- irq_src = fsl_readl(&dr_regs->usbsts) & fsl_readl(&dr_regs->usbintr);
- /* Clear notification bits */
- fsl_writel(irq_src, &dr_regs->usbsts);
-
- /* VDBG("irq_src [0x%8x]", irq_src); */
-
- /* Need to resume? */
- if (udc->usb_state == USB_STATE_SUSPENDED)
- if ((fsl_readl(&dr_regs->portsc1) & PORTSCX_PORT_SUSPEND) == 0)
- bus_resume(udc);
-
- /* USB Interrupt */
- if (irq_src & USB_STS_INT) {
- VDBG("Packet int");
- /* Setup package, we only support ep0 as control ep */
- if (fsl_readl(&dr_regs->endptsetupstat) & EP_SETUP_STATUS_EP0) {
- tripwire_handler(udc, 0,
- (u8 *) (&udc->local_setup_buff));
- setup_received_irq(udc, &udc->local_setup_buff);
- status = IRQ_HANDLED;
- }
-
- /* completion of dtd */
- if (fsl_readl(&dr_regs->endptcomplete)) {
- dtd_complete_irq(udc);
- status = IRQ_HANDLED;
- }
- }
-
- /* SOF (for ISO transfer) */
- if (irq_src & USB_STS_SOF) {
- status = IRQ_HANDLED;
- }
-
- /* Port Change */
- if (irq_src & USB_STS_PORT_CHANGE) {
- port_change_irq(udc);
- status = IRQ_HANDLED;
- }
-
- /* Reset Received */
- if (irq_src & USB_STS_RESET) {
- reset_irq(udc);
- status = IRQ_HANDLED;
- }
-
- /* Sleep Enable (Suspend) */
- if (irq_src & USB_STS_SUSPEND) {
- suspend_irq(udc);
- status = IRQ_HANDLED;
- }
-
- if (irq_src & (USB_STS_ERR | USB_STS_SYS_ERR)) {
- VDBG("Error IRQ %x", irq_src);
- }
-
- spin_unlock_irqrestore(&udc->lock, flags);
- return status;
-}
-
-/*----------------------------------------------------------------*
- * Hook to gadget drivers
- * Called by initialization code of gadget drivers
-*----------------------------------------------------------------*/
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-{
- int retval = -ENODEV;
- unsigned long flags = 0;
-
- if (!udc_controller)
- return -ENODEV;
-
- if (!driver || (driver->speed != USB_SPEED_FULL
- && driver->speed != USB_SPEED_HIGH)
- || !driver->bind || !driver->disconnect
- || !driver->setup)
- return -EINVAL;
-
- if (udc_controller->driver)
- return -EBUSY;
-
- /* lock is needed but whether should use this lock or another */
- spin_lock_irqsave(&udc_controller->lock, flags);
-
- driver->driver.bus = NULL;
- /* hook up the driver */
- udc_controller->driver = driver;
- udc_controller->gadget.dev.driver = &driver->driver;
- spin_unlock_irqrestore(&udc_controller->lock, flags);
-
- /* bind udc driver to gadget driver */
- retval = driver->bind(&udc_controller->gadget);
- if (retval) {
- VDBG("bind to %s --> %d", driver->driver.name, retval);
- udc_controller->gadget.dev.driver = NULL;
- udc_controller->driver = NULL;
- goto out;
- }
-
- /* Enable DR IRQ reg and Set usbcmd reg Run bit */
- dr_controller_run(udc_controller);
- udc_controller->usb_state = USB_STATE_ATTACHED;
- udc_controller->ep0_state = WAIT_FOR_SETUP;
- udc_controller->ep0_dir = 0;
- printk(KERN_INFO "%s: bind to driver %s\n",
- udc_controller->gadget.name, driver->driver.name);
-
-out:
- if (retval)
- printk(KERN_WARNING "gadget driver register failed %d\n",
- retval);
- return retval;
-}
-EXPORT_SYMBOL(usb_gadget_register_driver);
-
-/* Disconnect from gadget driver */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
- struct fsl_ep *loop_ep;
- unsigned long flags;
-
- if (!udc_controller)
- return -ENODEV;
-
- if (!driver || driver != udc_controller->driver || !driver->unbind)
- return -EINVAL;
-
- if (udc_controller->transceiver)
- otg_set_peripheral(udc_controller->transceiver, NULL);
-
- /* stop DR, disable intr */
- dr_controller_stop(udc_controller);
-
- /* in fact, no needed */
- udc_controller->usb_state = USB_STATE_ATTACHED;
- udc_controller->ep0_state = WAIT_FOR_SETUP;
- udc_controller->ep0_dir = 0;
-
- /* stand operation */
- spin_lock_irqsave(&udc_controller->lock, flags);
- udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
- nuke(&udc_controller->eps[0], -ESHUTDOWN);
- list_for_each_entry(loop_ep, &udc_controller->gadget.ep_list,
- ep.ep_list)
- nuke(loop_ep, -ESHUTDOWN);
- spin_unlock_irqrestore(&udc_controller->lock, flags);
-
- /* report disconnect; the controller is already quiesced */
- driver->disconnect(&udc_controller->gadget);
-
- /* unbind gadget and unhook driver. */
- driver->unbind(&udc_controller->gadget);
- udc_controller->gadget.dev.driver = NULL;
- udc_controller->driver = NULL;
-
- printk(KERN_WARNING "unregistered gadget driver '%s'\n",
- driver->driver.name);
- return 0;
-}
-EXPORT_SYMBOL(usb_gadget_unregister_driver);
-
-/*-------------------------------------------------------------------------
- PROC File System Support
--------------------------------------------------------------------------*/
-#ifdef CONFIG_USB_GADGET_DEBUG_FILES
-
-#include <linux/seq_file.h>
-
-static const char proc_filename[] = "driver/fsl_usb2_udc";
-
-static int fsl_proc_read(char *page, char **start, off_t off, int count,
- int *eof, void *_dev)
-{
- char *buf = page;
- char *next = buf;
- unsigned size = count;
- unsigned long flags;
- int t, i;
- u32 tmp_reg;
- struct fsl_ep *ep = NULL;
- struct fsl_req *req;
-
- struct fsl_udc *udc = udc_controller;
- if (off != 0)
- return 0;
-
- spin_lock_irqsave(&udc->lock, flags);
-
- /* ------basic driver information ---- */
- t = scnprintf(next, size,
- DRIVER_DESC "\n"
- "%s version: %s\n"
- "Gadget driver: %s\n\n",
- driver_name, DRIVER_VERSION,
- udc->driver ? udc->driver->driver.name : "(none)");
- size -= t;
- next += t;
-
- /* ------ DR Registers ----- */
- tmp_reg = fsl_readl(&dr_regs->usbcmd);
- t = scnprintf(next, size,
- "USBCMD reg:\n"
- "SetupTW: %d\n"
- "Run/Stop: %s\n\n",
- (tmp_reg & USB_CMD_SUTW) ? 1 : 0,
- (tmp_reg & USB_CMD_RUN_STOP) ? "Run" : "Stop");
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->usbsts);
- t = scnprintf(next, size,
- "USB Status Reg:\n"
- "Dr Suspend: %d Reset Received: %d System Error: %s "
- "USB Error Interrupt: %s\n\n",
- (tmp_reg & USB_STS_SUSPEND) ? 1 : 0,
- (tmp_reg & USB_STS_RESET) ? 1 : 0,
- (tmp_reg & USB_STS_SYS_ERR) ? "Err" : "Normal",
- (tmp_reg & USB_STS_ERR) ? "Err detected" : "No err");
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->usbintr);
- t = scnprintf(next, size,
- "USB Intrrupt Enable Reg:\n"
- "Sleep Enable: %d SOF Received Enable: %d "
- "Reset Enable: %d\n"
- "System Error Enable: %d "
- "Port Change Dectected Enable: %d\n"
- "USB Error Intr Enable: %d USB Intr Enable: %d\n\n",
- (tmp_reg & USB_INTR_DEVICE_SUSPEND) ? 1 : 0,
- (tmp_reg & USB_INTR_SOF_EN) ? 1 : 0,
- (tmp_reg & USB_INTR_RESET_EN) ? 1 : 0,
- (tmp_reg & USB_INTR_SYS_ERR_EN) ? 1 : 0,
- (tmp_reg & USB_INTR_PTC_DETECT_EN) ? 1 : 0,
- (tmp_reg & USB_INTR_ERR_INT_EN) ? 1 : 0,
- (tmp_reg & USB_INTR_INT_EN) ? 1 : 0);
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->frindex);
- t = scnprintf(next, size,
- "USB Frame Index Reg: Frame Number is 0x%x\n\n",
- (tmp_reg & USB_FRINDEX_MASKS));
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->deviceaddr);
- t = scnprintf(next, size,
- "USB Device Address Reg: Device Addr is 0x%x\n\n",
- (tmp_reg & USB_DEVICE_ADDRESS_MASK));
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->endpointlistaddr);
- t = scnprintf(next, size,
- "USB Endpoint List Address Reg: "
- "Device Addr is 0x%x\n\n",
- (tmp_reg & USB_EP_LIST_ADDRESS_MASK));
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->portsc1);
- t = scnprintf(next, size,
- "USB Port Status&Control Reg:\n"
- "Port Transceiver Type : %s Port Speed: %s\n"
- "PHY Low Power Suspend: %s Port Reset: %s "
- "Port Suspend Mode: %s\n"
- "Over-current Change: %s "
- "Port Enable/Disable Change: %s\n"
- "Port Enabled/Disabled: %s "
- "Current Connect Status: %s\n\n", ( {
- char *s;
- switch (tmp_reg & PORTSCX_PTS_FSLS) {
- case PORTSCX_PTS_UTMI:
- s = "UTMI"; break;
- case PORTSCX_PTS_ULPI:
- s = "ULPI "; break;
- case PORTSCX_PTS_FSLS:
- s = "FS/LS Serial"; break;
- default:
- s = "None"; break;
- }
- s;} ), ( {
- char *s;
- switch (tmp_reg & PORTSCX_PORT_SPEED_UNDEF) {
- case PORTSCX_PORT_SPEED_FULL:
- s = "Full Speed"; break;
- case PORTSCX_PORT_SPEED_LOW:
- s = "Low Speed"; break;
- case PORTSCX_PORT_SPEED_HIGH:
- s = "High Speed"; break;
- default:
- s = "Undefined"; break;
- }
- s;
- } ),
- (tmp_reg & PORTSCX_PHY_LOW_POWER_SPD) ?
- "Normal PHY mode" : "Low power mode",
- (tmp_reg & PORTSCX_PORT_RESET) ? "In Reset" :
- "Not in Reset",
- (tmp_reg & PORTSCX_PORT_SUSPEND) ? "In " : "Not in",
- (tmp_reg & PORTSCX_OVER_CURRENT_CHG) ? "Dected" :
- "No",
- (tmp_reg & PORTSCX_PORT_EN_DIS_CHANGE) ? "Disable" :
- "Not change",
- (tmp_reg & PORTSCX_PORT_ENABLE) ? "Enable" :
- "Not correct",
- (tmp_reg & PORTSCX_CURRENT_CONNECT_STATUS) ?
- "Attached" : "Not-Att");
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->usbmode);
- t = scnprintf(next, size,
- "USB Mode Reg: Controller Mode is: %s\n\n", ( {
- char *s;
- switch (tmp_reg & USB_MODE_CTRL_MODE_HOST) {
- case USB_MODE_CTRL_MODE_IDLE:
- s = "Idle"; break;
- case USB_MODE_CTRL_MODE_DEVICE:
- s = "Device Controller"; break;
- case USB_MODE_CTRL_MODE_HOST:
- s = "Host Controller"; break;
- default:
- s = "None"; break;
- }
- s;
- } ));
- size -= t;
- next += t;
-
- tmp_reg = fsl_readl(&dr_regs->endptsetupstat);
- t = scnprintf(next, size,
- "Endpoint Setup Status Reg: SETUP on ep 0x%x\n\n",
- (tmp_reg & EP_SETUP_STATUS_MASK));
- size -= t;
- next += t;
-
- for (i = 0; i < udc->max_ep / 2; i++) {
- tmp_reg = fsl_readl(&dr_regs->endptctrl[i]);
- t = scnprintf(next, size, "EP Ctrl Reg [0x%x]: = [0x%x]\n",
- i, tmp_reg);
- size -= t;
- next += t;
- }
- tmp_reg = fsl_readl(&dr_regs->endpointprime);
- t = scnprintf(next, size, "EP Prime Reg = [0x%x]\n\n", tmp_reg);
- size -= t;
- next += t;
-
- tmp_reg = usb_sys_regs->snoop1;
- t = scnprintf(next, size, "Snoop1 Reg : = [0x%x]\n\n", tmp_reg);
- size -= t;
- next += t;
-
- tmp_reg = usb_sys_regs->control;
- t = scnprintf(next, size, "General Control Reg : = [0x%x]\n\n",
- tmp_reg);
- size -= t;
- next += t;
-
- /* ------fsl_udc, fsl_ep, fsl_request structure information ----- */
- ep = &udc->eps[0];
- t = scnprintf(next, size, "For %s Maxpkt is 0x%x index is 0x%x\n",
- ep->ep.name, ep_maxpacket(ep), ep_index(ep));
- size -= t;
- next += t;
-
- if (list_empty(&ep->queue)) {
- t = scnprintf(next, size, "its req queue is empty\n\n");
- size -= t;
- next += t;
- } else {
- list_for_each_entry(req, &ep->queue, queue) {
- t = scnprintf(next, size,
- "req %p actual 0x%x length 0x%x buf %p\n",
- &req->req, req->req.actual,
- req->req.length, req->req.buf);
- size -= t;
- next += t;
- }
- }
- /* other gadget->eplist ep */
- list_for_each_entry(ep, &udc->gadget.ep_list, ep.ep_list) {
- if (ep->desc) {
- t = scnprintf(next, size,
- "\nFor %s Maxpkt is 0x%x "
- "index is 0x%x\n",
- ep->ep.name, ep_maxpacket(ep),
- ep_index(ep));
- size -= t;
- next += t;
-
- if (list_empty(&ep->queue)) {
- t = scnprintf(next, size,
- "its req queue is empty\n\n");
- size -= t;
- next += t;
- } else {
- list_for_each_entry(req, &ep->queue, queue) {
- t = scnprintf(next, size,
- "req %p actual 0x%x length "
- "0x%x buf %p\n",
- &req->req, req->req.actual,
- req->req.length, req->req.buf);
- size -= t;
- next += t;
- } /* end for each_entry of ep req */
- } /* end for else */
- } /* end for if(ep->queue) */
- } /* end (ep->desc) */
-
- spin_unlock_irqrestore(&udc->lock, flags);
-
- *eof = 1;
- return count - size;
-}
-
-#define create_proc_file() create_proc_read_entry(proc_filename, \
- 0, NULL, fsl_proc_read, NULL)
-
-#define remove_proc_file() remove_proc_entry(proc_filename, NULL)
-
-#else /* !CONFIG_USB_GADGET_DEBUG_FILES */
-
-#define create_proc_file() do {} while (0)
-#define remove_proc_file() do {} while (0)
-
-#endif /* CONFIG_USB_GADGET_DEBUG_FILES */
-
-/*-------------------------------------------------------------------------*/
-
-/* Release udc structures */
-static void fsl_udc_release(struct device *dev)
-{
- complete(udc_controller->done);
- dma_free_coherent(dev, udc_controller->ep_qh_size,
- udc_controller->ep_qh, udc_controller->ep_qh_dma);
- kfree(udc_controller);
-}
-
-/******************************************************************
- Internal structure setup functions
-*******************************************************************/
-/*------------------------------------------------------------------
- * init resource for globle controller
- * Return the udc handle on success or NULL on failure
- ------------------------------------------------------------------*/
-static int __init struct_udc_setup(struct fsl_udc *udc,
- struct platform_device *pdev)
-{
- struct fsl_usb2_platform_data *pdata;
- size_t size;
-
- pdata = pdev->dev.platform_data;
- udc->phy_mode = pdata->phy_mode;
-
- udc->eps = kzalloc(sizeof(struct fsl_ep) * udc->max_ep, GFP_KERNEL);
- if (!udc->eps) {
- ERR("malloc fsl_ep failed\n");
- return -1;
- }
-
- /* initialized QHs, take care of alignment */
- size = udc->max_ep * sizeof(struct ep_queue_head);
- if (size < QH_ALIGNMENT)
- size = QH_ALIGNMENT;
- else if ((size % QH_ALIGNMENT) != 0) {
- size += QH_ALIGNMENT + 1;
- size &= ~(QH_ALIGNMENT - 1);
- }
- udc->ep_qh = dma_alloc_coherent(&pdev->dev, size,
- &udc->ep_qh_dma, GFP_KERNEL);
- if (!udc->ep_qh) {
- ERR("malloc QHs for udc failed\n");
- kfree(udc->eps);
- return -1;
- }
-
- udc->ep_qh_size = size;
-
- /* Initialize ep0 status request structure */
- /* FIXME: fsl_alloc_request() ignores ep argument */
- udc->status_req = container_of(fsl_alloc_request(NULL, GFP_KERNEL),
- struct fsl_req, req);
- /* allocate a small amount of memory to get valid address */
- udc->status_req->req.buf = kmalloc(8, GFP_KERNEL);
- udc->status_req->req.dma = virt_to_phys(udc->status_req->req.buf);
-
- udc->resume_state = USB_STATE_NOTATTACHED;
- udc->usb_state = USB_STATE_POWERED;
- udc->ep0_dir = 0;
- udc->remote_wakeup = 0; /* default to 0 on reset */
-
- return 0;
-}
-
-/*----------------------------------------------------------------
- * Setup the fsl_ep struct for eps
- * Link fsl_ep->ep to gadget->ep_list
- * ep0out is not used so do nothing here
- * ep0in should be taken care
- *--------------------------------------------------------------*/
-static int __init struct_ep_setup(struct fsl_udc *udc, unsigned char index,
- char *name, int link)
-{
- struct fsl_ep *ep = &udc->eps[index];
-
- ep->udc = udc;
- strcpy(ep->name, name);
- ep->ep.name = ep->name;
-
- ep->ep.ops = &fsl_ep_ops;
- ep->stopped = 0;
-
- /* for ep0: maxP defined in desc
- * for other eps, maxP is set by epautoconfig() called by gadget layer
- */
- ep->ep.maxpacket = (unsigned short) ~0;
-
- /* the queue lists any req for this ep */
- INIT_LIST_HEAD(&ep->queue);
-
- /* gagdet.ep_list used for ep_autoconfig so no ep0 */
- if (link)
- list_add_tail(&ep->ep.ep_list, &udc->gadget.ep_list);
- ep->gadget = &udc->gadget;
- ep->qh = &udc->ep_qh[index];
-
- return 0;
-}
-
-/* Driver probe function
- * all intialization operations implemented here except enabling usb_intr reg
- * board setup should have been done in the platform code
- */
-static int __init fsl_udc_probe(struct platform_device *pdev)
-{
- struct resource *res;
- int ret = -ENODEV;
- unsigned int i;
- u32 dccparams;
-
- if (strcmp(pdev->name, driver_name)) {
- VDBG("Wrong device");
- return -ENODEV;
- }
-
- udc_controller = kzalloc(sizeof(struct fsl_udc), GFP_KERNEL);
- if (udc_controller == NULL) {
- ERR("malloc udc failed\n");
- return -ENOMEM;
- }
-
- spin_lock_init(&udc_controller->lock);
- udc_controller->stopped = 1;
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENXIO;
- goto err_kfree;
- }
-
- if (!request_mem_region(res->start, res->end - res->start + 1,
- driver_name)) {
- ERR("request mem region for %s failed\n", pdev->name);
- ret = -EBUSY;
- goto err_kfree;
- }
-
- dr_regs = ioremap(res->start, res->end - res->start + 1);
- if (!dr_regs) {
- ret = -ENOMEM;
- goto err_release_mem_region;
- }
-
- usb_sys_regs = (struct usb_sys_interface *)
- ((u32)dr_regs + USB_DR_SYS_OFFSET);
-
- /* Read Device Controller Capability Parameters register */
- dccparams = fsl_readl(&dr_regs->dccparams);
- if (!(dccparams & DCCPARAMS_DC)) {
- ERR("This SOC doesn't support device role\n");
- ret = -ENODEV;
- goto err_iounmap;
- }
- /* Get max device endpoints */
- /* DEN is bidirectional ep number, max_ep doubles the number */
- udc_controller->max_ep = (dccparams & DCCPARAMS_DEN_MASK) * 2;
-
- udc_controller->irq = platform_get_irq(pdev, 0);
- if (!udc_controller->irq) {
- ret = -ENODEV;
- goto err_iounmap;
- }
-
- ret = request_irq(udc_controller->irq, fsl_udc_irq, IRQF_SHARED,
- driver_name, udc_controller);
- if (ret != 0) {
- ERR("cannot request irq %d err %d\n",
- udc_controller->irq, ret);
- goto err_iounmap;
- }
-
- /* Initialize the udc structure including QH member and other member */
- if (struct_udc_setup(udc_controller, pdev)) {
- ERR("Can't initialize udc data structure\n");
- ret = -ENOMEM;
- goto err_free_irq;
- }
-
- /* initialize usb hw reg except for regs for EP,
- * leave usbintr reg untouched */
- dr_controller_setup(udc_controller);
-
- /* Setup gadget structure */
- udc_controller->gadget.ops = &fsl_gadget_ops;
- udc_controller->gadget.is_dualspeed = 1;
- udc_controller->gadget.ep0 = &udc_controller->eps[0].ep;
- INIT_LIST_HEAD(&udc_controller->gadget.ep_list);
- udc_controller->gadget.speed = USB_SPEED_UNKNOWN;
- udc_controller->gadget.name = driver_name;
-
- /* Setup gadget.dev and register with kernel */
- dev_set_name(&udc_controller->gadget.dev, "gadget");
- udc_controller->gadget.dev.release = fsl_udc_release;
- udc_controller->gadget.dev.parent = &pdev->dev;
- ret = device_register(&udc_controller->gadget.dev);
- if (ret < 0)
- goto err_free_irq;
-
- /* setup QH and epctrl for ep0 */
- ep0_setup(udc_controller);
-
- /* setup udc->eps[] for ep0 */
- struct_ep_setup(udc_controller, 0, "ep0", 0);
- /* for ep0: the desc defined here;
- * for other eps, gadget layer called ep_enable with defined desc
- */
- udc_controller->eps[0].desc = &fsl_ep0_desc;
- udc_controller->eps[0].ep.maxpacket = USB_MAX_CTRL_PAYLOAD;
-
- /* setup the udc->eps[] for non-control endpoints and link
- * to gadget.ep_list */
- for (i = 1; i < (int)(udc_controller->max_ep / 2); i++) {
- char name[14];
-
- sprintf(name, "ep%dout", i);
- struct_ep_setup(udc_controller, i * 2, name, 1);
- sprintf(name, "ep%din", i);
- struct_ep_setup(udc_controller, i * 2 + 1, name, 1);
- }
-
- /* use dma_pool for TD management */
- udc_controller->td_pool = dma_pool_create("udc_td", &pdev->dev,
- sizeof(struct ep_td_struct),
- DTD_ALIGNMENT, UDC_DMA_BOUNDARY);
- if (udc_controller->td_pool == NULL) {
- ret = -ENOMEM;
- goto err_unregister;
- }
- create_proc_file();
- return 0;
-
-err_unregister:
- device_unregister(&udc_controller->gadget.dev);
-err_free_irq:
- free_irq(udc_controller->irq, udc_controller);
-err_iounmap:
- iounmap(dr_regs);
-err_release_mem_region:
- release_mem_region(res->start, res->end - res->start + 1);
-err_kfree:
- kfree(udc_controller);
- udc_controller = NULL;
- return ret;
-}
-
-/* Driver removal function
- * Free resources and finish pending transactions
- */
-static int __exit fsl_udc_remove(struct platform_device *pdev)
-{
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
- DECLARE_COMPLETION(done);
-
- if (!udc_controller)
- return -ENODEV;
- udc_controller->done = &done;
-
- /* DR has been stopped in usb_gadget_unregister_driver() */
- remove_proc_file();
-
- /* Free allocated memory */
- kfree(udc_controller->status_req->req.buf);
- kfree(udc_controller->status_req);
- kfree(udc_controller->eps);
-
- dma_pool_destroy(udc_controller->td_pool);
- free_irq(udc_controller->irq, udc_controller);
- iounmap(dr_regs);
- release_mem_region(res->start, res->end - res->start + 1);
-
- device_unregister(&udc_controller->gadget.dev);
- /* free udc --wait for the release() finished */
- wait_for_completion(&done);
-
- return 0;
-}
-
-/*-----------------------------------------------------------------
- * Modify Power management attributes
- * Used by OTG statemachine to disable gadget temporarily
- -----------------------------------------------------------------*/
-static int fsl_udc_suspend(struct platform_device *pdev, pm_message_t state)
-{
- dr_controller_stop(udc_controller);
- return 0;
-}
-
-/*-----------------------------------------------------------------
- * Invoked on USB resume. May be called in_interrupt.
- * Here we start the DR controller and enable the irq
- *-----------------------------------------------------------------*/
-static int fsl_udc_resume(struct platform_device *pdev)
-{
- /* Enable DR irq reg and set controller Run */
- if (udc_controller->stopped) {
- dr_controller_setup(udc_controller);
- dr_controller_run(udc_controller);
- }
- udc_controller->usb_state = USB_STATE_ATTACHED;
- udc_controller->ep0_state = WAIT_FOR_SETUP;
- udc_controller->ep0_dir = 0;
- return 0;
-}
-
-/*-------------------------------------------------------------------------
- Register entry point for the peripheral controller driver
---------------------------------------------------------------------------*/
-
-static struct platform_driver udc_driver = {
- .remove = __exit_p(fsl_udc_remove),
- /* these suspend and resume are not usb suspend and resume */
- .suspend = fsl_udc_suspend,
- .resume = fsl_udc_resume,
- .driver = {
- .name = (char *)driver_name,
- .owner = THIS_MODULE,
- },
-};
-
-static int __init udc_init(void)
-{
- printk(KERN_INFO "%s (%s)\n", driver_desc, DRIVER_VERSION);
- return platform_driver_probe(&udc_driver, fsl_udc_probe);
-}
-
-module_init(udc_init);
-
-static void __exit udc_exit(void)
-{
- platform_driver_unregister(&udc_driver);
- printk(KERN_WARNING "%s unregistered\n", driver_desc);
-}
-
-module_exit(udc_exit);
-
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_LICENSE("GPL");
-MODULE_ALIAS("platform:fsl-usb2-udc");
diff --git a/drivers/usb/gadget/fsl_usb2_udc.h b/drivers/usb/gadget/fsl_usb2_udc.h
index e63ef12..20aecee 100644
--- a/drivers/usb/gadget/fsl_usb2_udc.h
+++ b/drivers/usb/gadget/fsl_usb2_udc.h
@@ -563,4 +563,22 @@ static void dump_msg(const char *label, const u8 * buf, unsigned int length)
* 2 + ((windex & USB_DIR_IN) ? 1 : 0))
#define get_pipe_by_ep(EP) (ep_index(EP) * 2 + ep_is_in(EP))
+struct platform_device;
+#ifdef CONFIG_ARCH_MXC
+int fsl_udc_clk_init(struct platform_device *pdev);
+void fsl_udc_clk_finalize(struct platform_device *pdev);
+void fsl_udc_clk_release(void);
+#else
+static inline int fsl_udc_clk_init(struct platform_device *pdev)
+{
+ return 0;
+}
+static inline void fsl_udc_clk_finalize(struct platform_device *pdev)
+{
+}
+static inline void fsl_udc_clk_release(void)
+{
+}
+#endif
+
#endif
--
1.5.4
--
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