The driver is actually for the Designware DWC2 controller.
This patch renames the local source files to dwc2_*c and
adjusts the Makefile to use the new names.
Signed-off-by: Marek Vasut <marex@denx.de>
obj-$(CONFIG_USB_GADGET_AT91) += at91_udc.o
obj-$(CONFIG_USB_GADGET_ATMEL_USBA) += atmel_usba_udc.o
obj-$(CONFIG_USB_GADGET_BCM_UDC_OTG_PHY) += bcm_udc_otg_phy.o
-obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += s3c_udc_otg.o
-obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG_PHY) += s3c_udc_otg_phy.o
+obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG) += dwc2_udc_otg.o
+obj-$(CONFIG_USB_GADGET_S3C_UDC_OTG_PHY) += dwc2_udc_otg_phy.o
obj-$(CONFIG_USB_GADGET_FOTG210) += fotg210.o
obj-$(CONFIG_CI_UDC) += ci_udc.o
obj-$(CONFIG_USB_GADGET_DOWNLOAD) += g_dnl.o
--- /dev/null
+/*
+ * drivers/usb/gadget/dwc2_udc_otg.c
+ * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ *
+ * Copyright (C) 2008 for Samsung Electronics
+ *
+ * BSP Support for Samsung's UDC driver
+ * available at:
+ * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
+ *
+ * State machine bugfixes:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Ported to u-boot:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ * Lukasz Majewski <l.majewski@samsumg.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+#undef DEBUG
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/list.h>
+#include <malloc.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <asm/io.h>
+
+#include <asm/mach-types.h>
+
+#include "dwc2_udc_otg_regs.h"
+#include "dwc2_udc_otg_priv.h"
+#include <usb/lin_gadget_compat.h>
+
+/***********************************************************/
+
+#define OTG_DMA_MODE 1
+
+#define DEBUG_SETUP 0
+#define DEBUG_EP0 0
+#define DEBUG_ISR 0
+#define DEBUG_OUT_EP 0
+#define DEBUG_IN_EP 0
+
+#include <usb/s3c_udc.h>
+
+#define EP0_CON 0
+#define EP_MASK 0xF
+
+static char *state_names[] = {
+ "WAIT_FOR_SETUP",
+ "DATA_STATE_XMIT",
+ "DATA_STATE_NEED_ZLP",
+ "WAIT_FOR_OUT_STATUS",
+ "DATA_STATE_RECV",
+ "WAIT_FOR_COMPLETE",
+ "WAIT_FOR_OUT_COMPLETE",
+ "WAIT_FOR_IN_COMPLETE",
+ "WAIT_FOR_NULL_COMPLETE",
+};
+
+#define DRIVER_DESC "DWC2 HS USB OTG Device Driver, (c) Samsung Electronics"
+#define DRIVER_VERSION "15 March 2009"
+
+struct dwc2_udc *the_controller;
+
+static const char driver_name[] = "dwc2-udc";
+static const char driver_desc[] = DRIVER_DESC;
+static const char ep0name[] = "ep0-control";
+
+/* Max packet size*/
+static unsigned int ep0_fifo_size = 64;
+static unsigned int ep_fifo_size = 512;
+static unsigned int ep_fifo_size2 = 1024;
+static int reset_available = 1;
+
+static struct usb_ctrlrequest *usb_ctrl;
+static dma_addr_t usb_ctrl_dma_addr;
+
+/*
+ Local declarations.
+*/
+static int dwc2_ep_enable(struct usb_ep *ep,
+ const struct usb_endpoint_descriptor *);
+static int dwc2_ep_disable(struct usb_ep *ep);
+static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
+ gfp_t gfp_flags);
+static void dwc2_free_request(struct usb_ep *ep, struct usb_request *);
+
+static int dwc2_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
+static int dwc2_dequeue(struct usb_ep *ep, struct usb_request *);
+static int dwc2_fifo_status(struct usb_ep *ep);
+static void dwc2_fifo_flush(struct usb_ep *ep);
+static void dwc2_ep0_read(struct dwc2_udc *dev);
+static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep);
+static void dwc2_handle_ep0(struct dwc2_udc *dev);
+static int dwc2_ep0_write(struct dwc2_udc *dev);
+static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req);
+static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status);
+static void stop_activity(struct dwc2_udc *dev,
+ struct usb_gadget_driver *driver);
+static int udc_enable(struct dwc2_udc *dev);
+static void udc_set_address(struct dwc2_udc *dev, unsigned char address);
+static void reconfig_usbd(struct dwc2_udc *dev);
+static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed);
+static void nuke(struct dwc2_ep *ep, int status);
+static int dwc2_udc_set_halt(struct usb_ep *_ep, int value);
+static void dwc2_udc_set_nak(struct dwc2_ep *ep);
+
+void set_udc_gadget_private_data(void *p)
+{
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: the_controller: 0x%p, p: 0x%p\n", __func__,
+ the_controller, p);
+ the_controller->gadget.dev.device_data = p;
+}
+
+void *get_udc_gadget_private_data(struct usb_gadget *gadget)
+{
+ return gadget->dev.device_data;
+}
+
+static struct usb_ep_ops dwc2_ep_ops = {
+ .enable = dwc2_ep_enable,
+ .disable = dwc2_ep_disable,
+
+ .alloc_request = dwc2_alloc_request,
+ .free_request = dwc2_free_request,
+
+ .queue = dwc2_queue,
+ .dequeue = dwc2_dequeue,
+
+ .set_halt = dwc2_udc_set_halt,
+ .fifo_status = dwc2_fifo_status,
+ .fifo_flush = dwc2_fifo_flush,
+};
+
+#define create_proc_files() do {} while (0)
+#define remove_proc_files() do {} while (0)
+
+/***********************************************************/
+
+void __iomem *regs_otg;
+struct dwc2_usbotg_reg *reg;
+
+bool dfu_usb_get_reset(void)
+{
+ return !!(readl(®->gintsts) & INT_RESET);
+}
+
+__weak void otg_phy_init(struct dwc2_udc *dev) {}
+__weak void otg_phy_off(struct dwc2_udc *dev) {}
+
+/***********************************************************/
+
+#include "dwc2_udc_otg_xfer_dma.c"
+
+/*
+ * udc_disable - disable USB device controller
+ */
+static void udc_disable(struct dwc2_udc *dev)
+{
+ debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
+
+ udc_set_address(dev, 0);
+
+ dev->ep0state = WAIT_FOR_SETUP;
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
+ dev->usb_address = 0;
+
+ otg_phy_off(dev);
+}
+
+/*
+ * udc_reinit - initialize software state
+ */
+static void udc_reinit(struct dwc2_udc *dev)
+{
+ unsigned int i;
+
+ debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
+
+ /* device/ep0 records init */
+ INIT_LIST_HEAD(&dev->gadget.ep_list);
+ INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ /* basic endpoint records init */
+ for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
+ struct dwc2_ep *ep = &dev->ep[i];
+
+ if (i != 0)
+ list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
+
+ ep->desc = 0;
+ ep->stopped = 0;
+ INIT_LIST_HEAD(&ep->queue);
+ ep->pio_irqs = 0;
+ }
+
+ /* the rest was statically initialized, and is read-only */
+}
+
+#define BYTES2MAXP(x) (x / 8)
+#define MAXP2BYTES(x) (x * 8)
+
+/* until it's enabled, this UDC should be completely invisible
+ * to any USB host.
+ */
+static int udc_enable(struct dwc2_udc *dev)
+{
+ debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
+
+ otg_phy_init(dev);
+ reconfig_usbd(dev);
+
+ debug_cond(DEBUG_SETUP != 0,
+ "DWC2 USB 2.0 OTG Controller Core Initialized : 0x%x\n",
+ readl(®->gintmsk));
+
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
+
+ return 0;
+}
+
+/*
+ Register entry point for the peripheral controller driver.
+*/
+int usb_gadget_register_driver(struct usb_gadget_driver *driver)
+{
+ struct dwc2_udc *dev = the_controller;
+ int retval = 0;
+ unsigned long flags = 0;
+
+ debug_cond(DEBUG_SETUP != 0, "%s: %s\n", __func__, "no name");
+
+ if (!driver
+ || (driver->speed != USB_SPEED_FULL
+ && driver->speed != USB_SPEED_HIGH)
+ || !driver->bind || !driver->disconnect || !driver->setup)
+ return -EINVAL;
+ if (!dev)
+ return -ENODEV;
+ if (dev->driver)
+ return -EBUSY;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ /* first hook up the driver ... */
+ dev->driver = driver;
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ if (retval) { /* TODO */
+ printf("target device_add failed, error %d\n", retval);
+ return retval;
+ }
+
+ retval = driver->bind(&dev->gadget);
+ if (retval) {
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: bind to driver --> error %d\n",
+ dev->gadget.name, retval);
+ dev->driver = 0;
+ return retval;
+ }
+
+ enable_irq(IRQ_OTG);
+
+ debug_cond(DEBUG_SETUP != 0,
+ "Registered gadget driver %s\n", dev->gadget.name);
+ udc_enable(dev);
+
+ return 0;
+}
+
+/*
+ * Unregister entry point for the peripheral controller driver.
+ */
+int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
+{
+ struct dwc2_udc *dev = the_controller;
+ unsigned long flags = 0;
+
+ if (!dev)
+ return -ENODEV;
+ if (!driver || driver != dev->driver)
+ return -EINVAL;
+
+ spin_lock_irqsave(&dev->lock, flags);
+ dev->driver = 0;
+ stop_activity(dev, driver);
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ driver->unbind(&dev->gadget);
+
+ disable_irq(IRQ_OTG);
+
+ udc_disable(dev);
+ return 0;
+}
+
+/*
+ * done - retire a request; caller blocked irqs
+ */
+static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status)
+{
+ unsigned int stopped = ep->stopped;
+
+ debug("%s: %s %p, req = %p, stopped = %d\n",
+ __func__, ep->ep.name, ep, &req->req, stopped);
+
+ list_del_init(&req->queue);
+
+ if (likely(req->req.status == -EINPROGRESS))
+ req->req.status = status;
+ else
+ status = req->req.status;
+
+ if (status && status != -ESHUTDOWN) {
+ debug("complete %s req %p stat %d len %u/%u\n",
+ ep->ep.name, &req->req, status,
+ req->req.actual, req->req.length);
+ }
+
+ /* don't modify queue heads during completion callback */
+ ep->stopped = 1;
+
+#ifdef DEBUG
+ printf("calling complete callback\n");
+ {
+ int i, len = req->req.length;
+
+ printf("pkt[%d] = ", req->req.length);
+ if (len > 64)
+ len = 64;
+ for (i = 0; i < len; i++) {
+ printf("%02x", ((u8 *)req->req.buf)[i]);
+ if ((i & 7) == 7)
+ printf(" ");
+ }
+ printf("\n");
+ }
+#endif
+ spin_unlock(&ep->dev->lock);
+ req->req.complete(&ep->ep, &req->req);
+ spin_lock(&ep->dev->lock);
+
+ debug("callback completed\n");
+
+ ep->stopped = stopped;
+}
+
+/*
+ * nuke - dequeue ALL requests
+ */
+static void nuke(struct dwc2_ep *ep, int status)
+{
+ struct dwc2_request *req;
+
+ debug("%s: %s %p\n", __func__, ep->ep.name, ep);
+
+ /* called with irqs blocked */
+ while (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+ done(ep, req, status);
+ }
+}
+
+static void stop_activity(struct dwc2_udc *dev,
+ struct usb_gadget_driver *driver)
+{
+ int i;
+
+ /* don't disconnect drivers more than once */
+ if (dev->gadget.speed == USB_SPEED_UNKNOWN)
+ driver = 0;
+ dev->gadget.speed = USB_SPEED_UNKNOWN;
+
+ /* prevent new request submissions, kill any outstanding requests */
+ for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
+ struct dwc2_ep *ep = &dev->ep[i];
+ ep->stopped = 1;
+ nuke(ep, -ESHUTDOWN);
+ }
+
+ /* report disconnect; the driver is already quiesced */
+ if (driver) {
+ spin_unlock(&dev->lock);
+ driver->disconnect(&dev->gadget);
+ spin_lock(&dev->lock);
+ }
+
+ /* re-init driver-visible data structures */
+ udc_reinit(dev);
+}
+
+static void reconfig_usbd(struct dwc2_udc *dev)
+{
+ /* 2. Soft-reset OTG Core and then unreset again. */
+ int i;
+ unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
+ uint32_t dflt_gusbcfg;
+
+ debug("Reseting OTG controller\n");
+
+ dflt_gusbcfg =
+ 0<<15 /* PHY Low Power Clock sel*/
+ |1<<14 /* Non-Periodic TxFIFO Rewind Enable*/
+ |0x5<<10 /* Turnaround time*/
+ |0<<9 | 0<<8 /* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
+ /* 1:SRP enable] H1= 1,1*/
+ |0<<7 /* Ulpi DDR sel*/
+ |0<<6 /* 0: high speed utmi+, 1: full speed serial*/
+ |0<<4 /* 0: utmi+, 1:ulpi*/
+ |1<<3 /* phy i/f 0:8bit, 1:16bit*/
+ |0x7<<0; /* HS/FS Timeout**/
+
+ if (dev->pdata->usb_gusbcfg)
+ dflt_gusbcfg = dev->pdata->usb_gusbcfg;
+
+ writel(dflt_gusbcfg, ®->gusbcfg);
+
+ /* 3. Put the OTG device core in the disconnected state.*/
+ uTemp = readl(®->dctl);
+ uTemp |= SOFT_DISCONNECT;
+ writel(uTemp, ®->dctl);
+
+ udelay(20);
+
+ /* 4. Make the OTG device core exit from the disconnected state.*/
+ uTemp = readl(®->dctl);
+ uTemp = uTemp & ~SOFT_DISCONNECT;
+ writel(uTemp, ®->dctl);
+
+ /* 5. Configure OTG Core to initial settings of device mode.*/
+ /* [][1: full speed(30Mhz) 0:high speed]*/
+ writel(EP_MISS_CNT(1) | DEV_SPEED_HIGH_SPEED_20, ®->dcfg);
+
+ mdelay(1);
+
+ /* 6. Unmask the core interrupts*/
+ writel(GINTMSK_INIT, ®->gintmsk);
+
+ /* 7. Set NAK bit of EP0, EP1, EP2*/
+ writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[EP0_CON].doepctl);
+ writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[EP0_CON].diepctl);
+
+ for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
+ writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[i].doepctl);
+ writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[i].diepctl);
+ }
+
+ /* 8. Unmask EPO interrupts*/
+ writel(((1 << EP0_CON) << DAINT_OUT_BIT)
+ | (1 << EP0_CON), ®->daintmsk);
+
+ /* 9. Unmask device OUT EP common interrupts*/
+ writel(DOEPMSK_INIT, ®->doepmsk);
+
+ /* 10. Unmask device IN EP common interrupts*/
+ writel(DIEPMSK_INIT, ®->diepmsk);
+
+ /* 11. Set Rx FIFO Size (in 32-bit words) */
+ writel(RX_FIFO_SIZE >> 2, ®->grxfsiz);
+
+ /* 12. Set Non Periodic Tx FIFO Size */
+ writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
+ ®->gnptxfsiz);
+
+ for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
+ writel((PTX_FIFO_SIZE >> 2) << 16 |
+ ((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
+ PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
+ ®->dieptxf[i-1]);
+
+ /* Flush the RX FIFO */
+ writel(RX_FIFO_FLUSH, ®->grstctl);
+ while (readl(®->grstctl) & RX_FIFO_FLUSH)
+ debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
+
+ /* Flush all the Tx FIFO's */
+ writel(TX_FIFO_FLUSH_ALL, ®->grstctl);
+ writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, ®->grstctl);
+ while (readl(®->grstctl) & TX_FIFO_FLUSH)
+ debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
+
+ /* 13. Clear NAK bit of EP0, EP1, EP2*/
+ /* For Slave mode*/
+ /* EP0: Control OUT */
+ writel(DEPCTL_EPDIS | DEPCTL_CNAK,
+ ®->out_endp[EP0_CON].doepctl);
+
+ /* 14. Initialize OTG Link Core.*/
+ writel(GAHBCFG_INIT, ®->gahbcfg);
+}
+
+static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed)
+{
+ unsigned int ep_ctrl;
+ int i;
+
+ if (speed == USB_SPEED_HIGH) {
+ ep0_fifo_size = 64;
+ ep_fifo_size = 512;
+ ep_fifo_size2 = 1024;
+ dev->gadget.speed = USB_SPEED_HIGH;
+ } else {
+ ep0_fifo_size = 64;
+ ep_fifo_size = 64;
+ ep_fifo_size2 = 64;
+ dev->gadget.speed = USB_SPEED_FULL;
+ }
+
+ dev->ep[0].ep.maxpacket = ep0_fifo_size;
+ for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
+ dev->ep[i].ep.maxpacket = ep_fifo_size;
+
+ /* EP0 - Control IN (64 bytes)*/
+ ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
+ writel(ep_ctrl|(0<<0), ®->in_endp[EP0_CON].diepctl);
+
+ /* EP0 - Control OUT (64 bytes)*/
+ ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
+ writel(ep_ctrl|(0<<0), ®->out_endp[EP0_CON].doepctl);
+}
+
+static int dwc2_ep_enable(struct usb_ep *_ep,
+ const struct usb_endpoint_descriptor *desc)
+{
+ struct dwc2_ep *ep;
+ struct dwc2_udc *dev;
+ unsigned long flags = 0;
+
+ debug("%s: %p\n", __func__, _ep);
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ if (!_ep || !desc || ep->desc || _ep->name == ep0name
+ || desc->bDescriptorType != USB_DT_ENDPOINT
+ || ep->bEndpointAddress != desc->bEndpointAddress
+ || ep_maxpacket(ep) <
+ le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
+
+ debug("%s: bad ep or descriptor\n", __func__);
+ return -EINVAL;
+ }
+
+ /* xfer types must match, except that interrupt ~= bulk */
+ if (ep->bmAttributes != desc->bmAttributes
+ && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
+ && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
+
+ debug("%s: %s type mismatch\n", __func__, _ep->name);
+ return -EINVAL;
+ }
+
+ /* hardware _could_ do smaller, but driver doesn't */
+ if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
+ && le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) !=
+ ep_maxpacket(ep)) || !get_unaligned(&desc->wMaxPacketSize)) {
+
+ debug("%s: bad %s maxpacket\n", __func__, _ep->name);
+ return -ERANGE;
+ }
+
+ dev = ep->dev;
+ if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
+
+ debug("%s: bogus device state\n", __func__);
+ return -ESHUTDOWN;
+ }
+
+ ep->stopped = 0;
+ ep->desc = desc;
+ ep->pio_irqs = 0;
+ ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
+
+ /* Reset halt state */
+ dwc2_udc_set_nak(ep);
+ dwc2_udc_set_halt(_ep, 0);
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+ dwc2_udc_ep_activate(ep);
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+
+ debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
+ __func__, _ep->name, ep->stopped, ep->ep.maxpacket);
+ return 0;
+}
+
+/*
+ * Disable EP
+ */
+static int dwc2_ep_disable(struct usb_ep *_ep)
+{
+ struct dwc2_ep *ep;
+ unsigned long flags = 0;
+
+ debug("%s: %p\n", __func__, _ep);
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ if (!_ep || !ep->desc) {
+ debug("%s: %s not enabled\n", __func__,
+ _ep ? ep->ep.name : NULL);
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+
+ /* Nuke all pending requests */
+ nuke(ep, -ESHUTDOWN);
+
+ ep->desc = 0;
+ ep->stopped = 1;
+
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+
+ debug("%s: disabled %s\n", __func__, _ep->name);
+ return 0;
+}
+
+static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
+ gfp_t gfp_flags)
+{
+ struct dwc2_request *req;
+
+ debug("%s: %s %p\n", __func__, ep->name, ep);
+
+ req = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*req));
+ if (!req)
+ return 0;
+
+ memset(req, 0, sizeof *req);
+ INIT_LIST_HEAD(&req->queue);
+
+ return &req->req;
+}
+
+static void dwc2_free_request(struct usb_ep *ep, struct usb_request *_req)
+{
+ struct dwc2_request *req;
+
+ debug("%s: %p\n", __func__, ep);
+
+ req = container_of(_req, struct dwc2_request, req);
+ WARN_ON(!list_empty(&req->queue));
+ kfree(req);
+}
+
+/* dequeue JUST ONE request */
+static int dwc2_dequeue(struct usb_ep *_ep, struct usb_request *_req)
+{
+ struct dwc2_ep *ep;
+ struct dwc2_request *req;
+ unsigned long flags = 0;
+
+ debug("%s: %p\n", __func__, _ep);
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ if (!_ep || ep->ep.name == ep0name)
+ return -EINVAL;
+
+ spin_lock_irqsave(&ep->dev->lock, flags);
+
+ /* 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) {
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+ return -EINVAL;
+ }
+
+ done(ep, req, -ECONNRESET);
+
+ spin_unlock_irqrestore(&ep->dev->lock, flags);
+ return 0;
+}
+
+/*
+ * Return bytes in EP FIFO
+ */
+static int dwc2_fifo_status(struct usb_ep *_ep)
+{
+ int count = 0;
+ struct dwc2_ep *ep;
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ if (!_ep) {
+ debug("%s: bad ep\n", __func__);
+ return -ENODEV;
+ }
+
+ debug("%s: %d\n", __func__, ep_index(ep));
+
+ /* LPD can't report unclaimed bytes from IN fifos */
+ if (ep_is_in(ep))
+ return -EOPNOTSUPP;
+
+ return count;
+}
+
+/*
+ * Flush EP FIFO
+ */
+static void dwc2_fifo_flush(struct usb_ep *_ep)
+{
+ struct dwc2_ep *ep;
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
+ debug("%s: bad ep\n", __func__);
+ return;
+ }
+
+ debug("%s: %d\n", __func__, ep_index(ep));
+}
+
+static const struct usb_gadget_ops dwc2_udc_ops = {
+ /* current versions must always be self-powered */
+};
+
+static struct dwc2_udc memory = {
+ .usb_address = 0,
+ .gadget = {
+ .ops = &dwc2_udc_ops,
+ .ep0 = &memory.ep[0].ep,
+ .name = driver_name,
+ },
+
+ /* control endpoint */
+ .ep[0] = {
+ .ep = {
+ .name = ep0name,
+ .ops = &dwc2_ep_ops,
+ .maxpacket = EP0_FIFO_SIZE,
+ },
+ .dev = &memory,
+
+ .bEndpointAddress = 0,
+ .bmAttributes = 0,
+
+ .ep_type = ep_control,
+ },
+
+ /* first group of endpoints */
+ .ep[1] = {
+ .ep = {
+ .name = "ep1in-bulk",
+ .ops = &dwc2_ep_ops,
+ .maxpacket = EP_FIFO_SIZE,
+ },
+ .dev = &memory,
+
+ .bEndpointAddress = USB_DIR_IN | 1,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+
+ .ep_type = ep_bulk_out,
+ .fifo_num = 1,
+ },
+
+ .ep[2] = {
+ .ep = {
+ .name = "ep2out-bulk",
+ .ops = &dwc2_ep_ops,
+ .maxpacket = EP_FIFO_SIZE,
+ },
+ .dev = &memory,
+
+ .bEndpointAddress = USB_DIR_OUT | 2,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+
+ .ep_type = ep_bulk_in,
+ .fifo_num = 2,
+ },
+
+ .ep[3] = {
+ .ep = {
+ .name = "ep3in-int",
+ .ops = &dwc2_ep_ops,
+ .maxpacket = EP_FIFO_SIZE,
+ },
+ .dev = &memory,
+
+ .bEndpointAddress = USB_DIR_IN | 3,
+ .bmAttributes = USB_ENDPOINT_XFER_INT,
+
+ .ep_type = ep_interrupt,
+ .fifo_num = 3,
+ },
+};
+
+/*
+ * probe - binds to the platform device
+ */
+
+int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
+{
+ struct dwc2_udc *dev = &memory;
+ int retval = 0;
+
+ debug("%s: %p\n", __func__, pdata);
+
+ dev->pdata = pdata;
+
+ reg = (struct dwc2_usbotg_reg *)pdata->regs_otg;
+
+ /* regs_otg = (void *)pdata->regs_otg; */
+
+ dev->gadget.is_dualspeed = 1; /* Hack only*/
+ dev->gadget.is_otg = 0;
+ dev->gadget.is_a_peripheral = 0;
+ dev->gadget.b_hnp_enable = 0;
+ dev->gadget.a_hnp_support = 0;
+ dev->gadget.a_alt_hnp_support = 0;
+
+ the_controller = dev;
+
+ usb_ctrl = memalign(CONFIG_SYS_CACHELINE_SIZE,
+ ROUND(sizeof(struct usb_ctrlrequest),
+ CONFIG_SYS_CACHELINE_SIZE));
+ if (!usb_ctrl) {
+ error("No memory available for UDC!\n");
+ return -ENOMEM;
+ }
+
+ usb_ctrl_dma_addr = (dma_addr_t) usb_ctrl;
+
+ udc_reinit(dev);
+
+ return retval;
+}
+
+int usb_gadget_handle_interrupts(int index)
+{
+ u32 intr_status = readl(®->gintsts);
+ u32 gintmsk = readl(®->gintmsk);
+
+ if (intr_status & gintmsk)
+ return dwc2_udc_irq(1, (void *)the_controller);
+ return 0;
+}
--- /dev/null
+/*
+ * drivers/usb/gadget/dwc2_udc_otg.c
+ * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ *
+ * Copyright (C) 2008 for Samsung Electronics
+ *
+ * BSP Support for Samsung's UDC driver
+ * available at:
+ * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
+ *
+ * State machine bugfixes:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Ported to u-boot:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ * Lukasz Majewski <l.majewski@samsumg.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <common.h>
+#include <asm/errno.h>
+#include <linux/list.h>
+#include <malloc.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/gadget.h>
+
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+#include <asm/io.h>
+
+#include <asm/mach-types.h>
+
+#include "dwc2_udc_otg_regs.h"
+#include "dwc2_udc_otg_priv.h"
+#include <usb/lin_gadget_compat.h>
+
+#include <usb/s3c_udc.h>
+
+void otg_phy_init(struct dwc2_udc *dev)
+{
+ unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
+ struct dwc2_usbotg_phy *phy =
+ (struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
+
+ dev->pdata->phy_control(1);
+
+ /* USB PHY0 Enable */
+ printf("USB PHY0 Enable\n");
+
+ /* Enable PHY */
+ writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
+
+ if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
+ writel((readl(&phy->phypwr)
+ &~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
+ &~FORCE_SUSPEND_0), &phy->phypwr);
+ else /* C110 GONI */
+ writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
+ &~FORCE_SUSPEND_0), &phy->phypwr);
+
+ if (s5p_cpu_id == 0x4412)
+ writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 |
+ EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ,
+ &phy->phyclk); /* PLL 24Mhz */
+ else
+ writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
+ CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
+
+ writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
+ | PHY_SW_RST0, &phy->rstcon);
+ udelay(10);
+ writel(readl(&phy->rstcon)
+ &~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
+ udelay(10);
+}
+
+void otg_phy_off(struct dwc2_udc *dev)
+{
+ unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
+ struct dwc2_usbotg_phy *phy =
+ (struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
+
+ /* reset controller just in case */
+ writel(PHY_SW_RST0, &phy->rstcon);
+ udelay(20);
+ writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
+ udelay(20);
+
+ writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
+ | FORCE_SUSPEND_0, &phy->phypwr);
+
+ writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
+
+ writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
+ &phy->phyclk);
+
+ udelay(10000);
+
+ dev->pdata->phy_control(0);
+}
--- /dev/null
+/*
+ * drivers/usb/gadget/dwc2_udc_otg_xfer_dma.c
+ * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
+ *
+ * Copyright (C) 2009 for Samsung Electronics
+ *
+ * BSP Support for Samsung's UDC driver
+ * available at:
+ * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
+ *
+ * State machine bugfixes:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ *
+ * Ported to u-boot:
+ * Marek Szyprowski <m.szyprowski@samsung.com>
+ * Lukasz Majewski <l.majewski@samsumg.com>
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+static u8 clear_feature_num;
+int clear_feature_flag;
+
+/* Bulk-Only Mass Storage Reset (class-specific request) */
+#define GET_MAX_LUN_REQUEST 0xFE
+#define BOT_RESET_REQUEST 0xFF
+
+static inline void dwc2_udc_ep0_zlp(struct dwc2_udc *dev)
+{
+ u32 ep_ctrl;
+
+ writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma);
+ writel(DIEPT_SIZ_PKT_CNT(1), ®->in_endp[EP0_CON].dieptsiz);
+
+ ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
+ writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
+ ®->in_endp[EP0_CON].diepctl);
+
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
+ __func__, readl(®->in_endp[EP0_CON].diepctl));
+ dev->ep0state = WAIT_FOR_IN_COMPLETE;
+}
+
+static void dwc2_udc_pre_setup(void)
+{
+ u32 ep_ctrl;
+
+ debug_cond(DEBUG_IN_EP,
+ "%s : Prepare Setup packets.\n", __func__);
+
+ writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest),
+ ®->out_endp[EP0_CON].doeptsiz);
+ writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma);
+
+ ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
+ writel(ep_ctrl|DEPCTL_EPENA, ®->out_endp[EP0_CON].doepctl);
+
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
+ __func__, readl(®->in_endp[EP0_CON].diepctl));
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
+ __func__, readl(®->out_endp[EP0_CON].doepctl));
+
+}
+
+static inline void dwc2_ep0_complete_out(void)
+{
+ u32 ep_ctrl;
+
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
+ __func__, readl(®->in_endp[EP0_CON].diepctl));
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
+ __func__, readl(®->out_endp[EP0_CON].doepctl));
+
+ debug_cond(DEBUG_IN_EP,
+ "%s : Prepare Complete Out packet.\n", __func__);
+
+ writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest),
+ ®->out_endp[EP0_CON].doeptsiz);
+ writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma);
+
+ ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
+ writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
+ ®->out_endp[EP0_CON].doepctl);
+
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
+ __func__, readl(®->in_endp[EP0_CON].diepctl));
+ debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
+ __func__, readl(®->out_endp[EP0_CON].doepctl));
+
+}
+
+
+static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req)
+{
+ u32 *buf, ctrl;
+ u32 length, pktcnt;
+ u32 ep_num = ep_index(ep);
+
+ buf = req->req.buf + req->req.actual;
+ length = min_t(u32, req->req.length - req->req.actual,
+ ep_num ? DMA_BUFFER_SIZE : ep->ep.maxpacket);
+
+ ep->len = length;
+ ep->dma_buf = buf;
+
+ if (ep_num == EP0_CON || length == 0)
+ pktcnt = 1;
+ else
+ pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;
+
+ ctrl = readl(®->out_endp[ep_num].doepctl);
+
+ writel((unsigned int) ep->dma_buf, ®->out_endp[ep_num].doepdma);
+ writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),
+ ®->out_endp[ep_num].doeptsiz);
+ writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, ®->out_endp[ep_num].doepctl);
+
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: EP%d RX DMA start : DOEPDMA = 0x%x,"
+ "DOEPTSIZ = 0x%x, DOEPCTL = 0x%x\n"
+ "\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
+ __func__, ep_num,
+ readl(®->out_endp[ep_num].doepdma),
+ readl(®->out_endp[ep_num].doeptsiz),
+ readl(®->out_endp[ep_num].doepctl),
+ buf, pktcnt, length);
+ return 0;
+
+}
+
+static int setdma_tx(struct dwc2_ep *ep, struct dwc2_request *req)
+{
+ u32 *buf, ctrl = 0;
+ u32 length, pktcnt;
+ u32 ep_num = ep_index(ep);
+
+ buf = req->req.buf + req->req.actual;
+ length = req->req.length - req->req.actual;
+
+ if (ep_num == EP0_CON)
+ length = min(length, (u32)ep_maxpacket(ep));
+
+ ep->len = length;
+ ep->dma_buf = buf;
+
+ flush_dcache_range((unsigned long) ep->dma_buf,
+ (unsigned long) ep->dma_buf +
+ ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE));
+
+ if (length == 0)
+ pktcnt = 1;
+ else
+ pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;
+
+ /* Flush the endpoint's Tx FIFO */
+ writel(TX_FIFO_NUMBER(ep->fifo_num), ®->grstctl);
+ writel(TX_FIFO_NUMBER(ep->fifo_num) | TX_FIFO_FLUSH, ®->grstctl);
+ while (readl(®->grstctl) & TX_FIFO_FLUSH)
+ ;
+
+ writel((unsigned long) ep->dma_buf, ®->in_endp[ep_num].diepdma);
+ writel(DIEPT_SIZ_PKT_CNT(pktcnt) | DIEPT_SIZ_XFER_SIZE(length),
+ ®->in_endp[ep_num].dieptsiz);
+
+ ctrl = readl(®->in_endp[ep_num].diepctl);
+
+ /* Write the FIFO number to be used for this endpoint */
+ ctrl &= DIEPCTL_TX_FIFO_NUM_MASK;
+ ctrl |= DIEPCTL_TX_FIFO_NUM(ep->fifo_num);
+
+ /* Clear reserved (Next EP) bits */
+ ctrl = (ctrl&~(EP_MASK<<DEPCTL_NEXT_EP_BIT));
+
+ writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, ®->in_endp[ep_num].diepctl);
+
+ debug_cond(DEBUG_IN_EP,
+ "%s:EP%d TX DMA start : DIEPDMA0 = 0x%x,"
+ "DIEPTSIZ0 = 0x%x, DIEPCTL0 = 0x%x\n"
+ "\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
+ __func__, ep_num,
+ readl(®->in_endp[ep_num].diepdma),
+ readl(®->in_endp[ep_num].dieptsiz),
+ readl(®->in_endp[ep_num].diepctl),
+ buf, pktcnt, length);
+
+ return length;
+}
+
+static void complete_rx(struct dwc2_udc *dev, u8 ep_num)
+{
+ struct dwc2_ep *ep = &dev->ep[ep_num];
+ struct dwc2_request *req = NULL;
+ u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
+
+ if (list_empty(&ep->queue)) {
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: RX DMA done : NULL REQ on OUT EP-%d\n",
+ __func__, ep_num);
+ return;
+
+ }
+
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+ ep_tsr = readl(®->out_endp[ep_num].doeptsiz);
+
+ if (ep_num == EP0_CON)
+ xfer_size = (ep_tsr & DOEPT_SIZ_XFER_SIZE_MAX_EP0);
+ else
+ xfer_size = (ep_tsr & DOEPT_SIZ_XFER_SIZE_MAX_EP);
+
+ xfer_size = ep->len - xfer_size;
+
+ /*
+ * NOTE:
+ *
+ * Please be careful with proper buffer allocation for USB request,
+ * which needs to be aligned to CONFIG_SYS_CACHELINE_SIZE, not only
+ * with starting address, but also its size shall be a cache line
+ * multiplication.
+ *
+ * This will prevent from corruption of data allocated immediatelly
+ * before or after the buffer.
+ *
+ * For armv7, the cache_v7.c provides proper code to emit "ERROR"
+ * message to warn users.
+ */
+ invalidate_dcache_range((unsigned long) ep->dma_buf,
+ (unsigned long) ep->dma_buf +
+ ROUND(xfer_size, CONFIG_SYS_CACHELINE_SIZE));
+
+ req->req.actual += min(xfer_size, req->req.length - req->req.actual);
+ is_short = (xfer_size < ep->ep.maxpacket);
+
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: RX DMA done : ep = %d, rx bytes = %d/%d, "
+ "is_short = %d, DOEPTSIZ = 0x%x, remained bytes = %d\n",
+ __func__, ep_num, req->req.actual, req->req.length,
+ is_short, ep_tsr, xfer_size);
+
+ if (is_short || req->req.actual == req->req.length) {
+ if (ep_num == EP0_CON && dev->ep0state == DATA_STATE_RECV) {
+ debug_cond(DEBUG_OUT_EP != 0, " => Send ZLP\n");
+ dwc2_udc_ep0_zlp(dev);
+ /* packet will be completed in complete_tx() */
+ dev->ep0state = WAIT_FOR_IN_COMPLETE;
+ } else {
+ done(ep, req, 0);
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next,
+ struct dwc2_request, queue);
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: Next Rx request start...\n",
+ __func__);
+ setdma_rx(ep, req);
+ }
+ }
+ } else
+ setdma_rx(ep, req);
+}
+
+static void complete_tx(struct dwc2_udc *dev, u8 ep_num)
+{
+ struct dwc2_ep *ep = &dev->ep[ep_num];
+ struct dwc2_request *req;
+ u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
+ u32 last;
+
+ if (dev->ep0state == WAIT_FOR_NULL_COMPLETE) {
+ dev->ep0state = WAIT_FOR_OUT_COMPLETE;
+ dwc2_ep0_complete_out();
+ return;
+ }
+
+ if (list_empty(&ep->queue)) {
+ debug_cond(DEBUG_IN_EP,
+ "%s: TX DMA done : NULL REQ on IN EP-%d\n",
+ __func__, ep_num);
+ return;
+
+ }
+
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+
+ ep_tsr = readl(®->in_endp[ep_num].dieptsiz);
+
+ xfer_size = ep->len;
+ is_short = (xfer_size < ep->ep.maxpacket);
+ req->req.actual += min(xfer_size, req->req.length - req->req.actual);
+
+ debug_cond(DEBUG_IN_EP,
+ "%s: TX DMA done : ep = %d, tx bytes = %d/%d, "
+ "is_short = %d, DIEPTSIZ = 0x%x, remained bytes = %d\n",
+ __func__, ep_num, req->req.actual, req->req.length,
+ is_short, ep_tsr, xfer_size);
+
+ if (ep_num == 0) {
+ if (dev->ep0state == DATA_STATE_XMIT) {
+ debug_cond(DEBUG_IN_EP,
+ "%s: ep_num = %d, ep0stat =="
+ "DATA_STATE_XMIT\n",
+ __func__, ep_num);
+ last = write_fifo_ep0(ep, req);
+ if (last)
+ dev->ep0state = WAIT_FOR_COMPLETE;
+ } else if (dev->ep0state == WAIT_FOR_IN_COMPLETE) {
+ debug_cond(DEBUG_IN_EP,
+ "%s: ep_num = %d, completing request\n",
+ __func__, ep_num);
+ done(ep, req, 0);
+ dev->ep0state = WAIT_FOR_SETUP;
+ } else if (dev->ep0state == WAIT_FOR_COMPLETE) {
+ debug_cond(DEBUG_IN_EP,
+ "%s: ep_num = %d, completing request\n",
+ __func__, ep_num);
+ done(ep, req, 0);
+ dev->ep0state = WAIT_FOR_OUT_COMPLETE;
+ dwc2_ep0_complete_out();
+ } else {
+ debug_cond(DEBUG_IN_EP,
+ "%s: ep_num = %d, invalid ep state\n",
+ __func__, ep_num);
+ }
+ return;
+ }
+
+ if (req->req.actual == req->req.length)
+ done(ep, req, 0);
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+ debug_cond(DEBUG_IN_EP,
+ "%s: Next Tx request start...\n", __func__);
+ setdma_tx(ep, req);
+ }
+}
+
+static inline void dwc2_udc_check_tx_queue(struct dwc2_udc *dev, u8 ep_num)
+{
+ struct dwc2_ep *ep = &dev->ep[ep_num];
+ struct dwc2_request *req;
+
+ debug_cond(DEBUG_IN_EP,
+ "%s: Check queue, ep_num = %d\n", __func__, ep_num);
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+ debug_cond(DEBUG_IN_EP,
+ "%s: Next Tx request(0x%p) start...\n",
+ __func__, req);
+
+ if (ep_is_in(ep))
+ setdma_tx(ep, req);
+ else
+ setdma_rx(ep, req);
+ } else {
+ debug_cond(DEBUG_IN_EP,
+ "%s: NULL REQ on IN EP-%d\n", __func__, ep_num);
+
+ return;
+ }
+
+}
+
+static void process_ep_in_intr(struct dwc2_udc *dev)
+{
+ u32 ep_intr, ep_intr_status;
+ u8 ep_num = 0;
+
+ ep_intr = readl(®->daint);
+ debug_cond(DEBUG_IN_EP,
+ "*** %s: EP In interrupt : DAINT = 0x%x\n", __func__, ep_intr);
+
+ ep_intr &= DAINT_MASK;
+
+ while (ep_intr) {
+ if (ep_intr & DAINT_IN_EP_INT(1)) {
+ ep_intr_status = readl(®->in_endp[ep_num].diepint);
+ debug_cond(DEBUG_IN_EP,
+ "\tEP%d-IN : DIEPINT = 0x%x\n",
+ ep_num, ep_intr_status);
+
+ /* Interrupt Clear */
+ writel(ep_intr_status, ®->in_endp[ep_num].diepint);
+
+ if (ep_intr_status & TRANSFER_DONE) {
+ complete_tx(dev, ep_num);
+
+ if (ep_num == 0) {
+ if (dev->ep0state ==
+ WAIT_FOR_IN_COMPLETE)
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ if (dev->ep0state == WAIT_FOR_SETUP)
+ dwc2_udc_pre_setup();
+
+ /* continue transfer after
+ set_clear_halt for DMA mode */
+ if (clear_feature_flag == 1) {
+ dwc2_udc_check_tx_queue(dev,
+ clear_feature_num);
+ clear_feature_flag = 0;
+ }
+ }
+ }
+ }
+ ep_num++;
+ ep_intr >>= 1;
+ }
+}
+
+static void process_ep_out_intr(struct dwc2_udc *dev)
+{
+ u32 ep_intr, ep_intr_status;
+ u8 ep_num = 0;
+
+ ep_intr = readl(®->daint);
+ debug_cond(DEBUG_OUT_EP != 0,
+ "*** %s: EP OUT interrupt : DAINT = 0x%x\n",
+ __func__, ep_intr);
+
+ ep_intr = (ep_intr >> DAINT_OUT_BIT) & DAINT_MASK;
+
+ while (ep_intr) {
+ if (ep_intr & 0x1) {
+ ep_intr_status = readl(®->out_endp[ep_num].doepint);
+ debug_cond(DEBUG_OUT_EP != 0,
+ "\tEP%d-OUT : DOEPINT = 0x%x\n",
+ ep_num, ep_intr_status);
+
+ /* Interrupt Clear */
+ writel(ep_intr_status, ®->out_endp[ep_num].doepint);
+
+ if (ep_num == 0) {
+ if (ep_intr_status & TRANSFER_DONE) {
+ if (dev->ep0state !=
+ WAIT_FOR_OUT_COMPLETE)
+ complete_rx(dev, ep_num);
+ else {
+ dev->ep0state = WAIT_FOR_SETUP;
+ dwc2_udc_pre_setup();
+ }
+ }
+
+ if (ep_intr_status &
+ CTRL_OUT_EP_SETUP_PHASE_DONE) {
+ debug_cond(DEBUG_OUT_EP != 0,
+ "SETUP packet arrived\n");
+ dwc2_handle_ep0(dev);
+ }
+ } else {
+ if (ep_intr_status & TRANSFER_DONE)
+ complete_rx(dev, ep_num);
+ }
+ }
+ ep_num++;
+ ep_intr >>= 1;
+ }
+}
+
+/*
+ * usb client interrupt handler.
+ */
+static int dwc2_udc_irq(int irq, void *_dev)
+{
+ struct dwc2_udc *dev = _dev;
+ u32 intr_status;
+ u32 usb_status, gintmsk;
+ unsigned long flags = 0;
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ intr_status = readl(®->gintsts);
+ gintmsk = readl(®->gintmsk);
+
+ debug_cond(DEBUG_ISR,
+ "\n*** %s : GINTSTS=0x%x(on state %s), GINTMSK : 0x%x,"
+ "DAINT : 0x%x, DAINTMSK : 0x%x\n",
+ __func__, intr_status, state_names[dev->ep0state], gintmsk,
+ readl(®->daint), readl(®->daintmsk));
+
+ if (!intr_status) {
+ spin_unlock_irqrestore(&dev->lock, flags);
+ return IRQ_HANDLED;
+ }
+
+ if (intr_status & INT_ENUMDONE) {
+ debug_cond(DEBUG_ISR, "\tSpeed Detection interrupt\n");
+
+ writel(INT_ENUMDONE, ®->gintsts);
+ usb_status = (readl(®->dsts) & 0x6);
+
+ if (usb_status & (USB_FULL_30_60MHZ | USB_FULL_48MHZ)) {
+ debug_cond(DEBUG_ISR,
+ "\t\tFull Speed Detection\n");
+ set_max_pktsize(dev, USB_SPEED_FULL);
+
+ } else {
+ debug_cond(DEBUG_ISR,
+ "\t\tHigh Speed Detection : 0x%x\n",
+ usb_status);
+ set_max_pktsize(dev, USB_SPEED_HIGH);
+ }
+ }
+
+ if (intr_status & INT_EARLY_SUSPEND) {
+ debug_cond(DEBUG_ISR, "\tEarly suspend interrupt\n");
+ writel(INT_EARLY_SUSPEND, ®->gintsts);
+ }
+
+ if (intr_status & INT_SUSPEND) {
+ usb_status = readl(®->dsts);
+ debug_cond(DEBUG_ISR,
+ "\tSuspend interrupt :(DSTS):0x%x\n", usb_status);
+ writel(INT_SUSPEND, ®->gintsts);
+
+ if (dev->gadget.speed != USB_SPEED_UNKNOWN
+ && dev->driver) {
+ if (dev->driver->suspend)
+ dev->driver->suspend(&dev->gadget);
+
+ /* HACK to let gadget detect disconnected state */
+ if (dev->driver->disconnect) {
+ spin_unlock_irqrestore(&dev->lock, flags);
+ dev->driver->disconnect(&dev->gadget);
+ spin_lock_irqsave(&dev->lock, flags);
+ }
+ }
+ }
+
+ if (intr_status & INT_RESUME) {
+ debug_cond(DEBUG_ISR, "\tResume interrupt\n");
+ writel(INT_RESUME, ®->gintsts);
+
+ if (dev->gadget.speed != USB_SPEED_UNKNOWN
+ && dev->driver
+ && dev->driver->resume) {
+
+ dev->driver->resume(&dev->gadget);
+ }
+ }
+
+ if (intr_status & INT_RESET) {
+ usb_status = readl(®->gotgctl);
+ debug_cond(DEBUG_ISR,
+ "\tReset interrupt - (GOTGCTL):0x%x\n", usb_status);
+ writel(INT_RESET, ®->gintsts);
+
+ if ((usb_status & 0xc0000) == (0x3 << 18)) {
+ if (reset_available) {
+ debug_cond(DEBUG_ISR,
+ "\t\tOTG core got reset (%d)!!\n",
+ reset_available);
+ reconfig_usbd(dev);
+ dev->ep0state = WAIT_FOR_SETUP;
+ reset_available = 0;
+ dwc2_udc_pre_setup();
+ } else
+ reset_available = 1;
+
+ } else {
+ reset_available = 1;
+ debug_cond(DEBUG_ISR,
+ "\t\tRESET handling skipped\n");
+ }
+ }
+
+ if (intr_status & INT_IN_EP)
+ process_ep_in_intr(dev);
+
+ if (intr_status & INT_OUT_EP)
+ process_ep_out_intr(dev);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+/** Queue one request
+ * Kickstart transfer if needed
+ */
+static int dwc2_queue(struct usb_ep *_ep, struct usb_request *_req,
+ gfp_t gfp_flags)
+{
+ struct dwc2_request *req;
+ struct dwc2_ep *ep;
+ struct dwc2_udc *dev;
+ unsigned long flags = 0;
+ u32 ep_num, gintsts;
+
+ req = container_of(_req, struct dwc2_request, req);
+ if (unlikely(!_req || !_req->complete || !_req->buf
+ || !list_empty(&req->queue))) {
+
+ debug("%s: bad params\n", __func__);
+ return -EINVAL;
+ }
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+
+ if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
+
+ debug("%s: bad ep: %s, %d, %p\n", __func__,
+ ep->ep.name, !ep->desc, _ep);
+ return -EINVAL;
+ }
+
+ ep_num = ep_index(ep);
+ dev = ep->dev;
+ if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
+
+ debug("%s: bogus device state %p\n", __func__, dev->driver);
+ return -ESHUTDOWN;
+ }
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ _req->status = -EINPROGRESS;
+ _req->actual = 0;
+
+ /* kickstart this i/o queue? */
+ debug("\n*** %s: %s-%s req = %p, len = %d, buf = %p"
+ "Q empty = %d, stopped = %d\n",
+ __func__, _ep->name, ep_is_in(ep) ? "in" : "out",
+ _req, _req->length, _req->buf,
+ list_empty(&ep->queue), ep->stopped);
+
+#ifdef DEBUG
+ {
+ int i, len = _req->length;
+
+ printf("pkt = ");
+ if (len > 64)
+ len = 64;
+ for (i = 0; i < len; i++) {
+ printf("%02x", ((u8 *)_req->buf)[i]);
+ if ((i & 7) == 7)
+ printf(" ");
+ }
+ printf("\n");
+ }
+#endif
+
+ if (list_empty(&ep->queue) && !ep->stopped) {
+
+ if (ep_num == 0) {
+ /* EP0 */
+ list_add_tail(&req->queue, &ep->queue);
+ dwc2_ep0_kick(dev, ep);
+ req = 0;
+
+ } else if (ep_is_in(ep)) {
+ gintsts = readl(®->gintsts);
+ debug_cond(DEBUG_IN_EP,
+ "%s: ep_is_in, S3C_UDC_OTG_GINTSTS=0x%x\n",
+ __func__, gintsts);
+
+ setdma_tx(ep, req);
+ } else {
+ gintsts = readl(®->gintsts);
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s:ep_is_out, S3C_UDC_OTG_GINTSTS=0x%x\n",
+ __func__, gintsts);
+
+ setdma_rx(ep, req);
+ }
+ }
+
+ /* pio or dma irq handler advances the queue. */
+ if (likely(req != 0))
+ list_add_tail(&req->queue, &ep->queue);
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return 0;
+}
+
+/****************************************************************/
+/* End Point 0 related functions */
+/****************************************************************/
+
+/* return: 0 = still running, 1 = completed, negative = errno */
+static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req)
+{
+ u32 max;
+ unsigned count;
+ int is_last;
+
+ max = ep_maxpacket(ep);
+
+ debug_cond(DEBUG_EP0 != 0, "%s: max = %d\n", __func__, max);
+
+ count = setdma_tx(ep, req);
+
+ /* last packet is usually short (or a zlp) */
+ if (likely(count != max))
+ is_last = 1;
+ else {
+ if (likely(req->req.length != req->req.actual + count)
+ || req->req.zero)
+ is_last = 0;
+ else
+ is_last = 1;
+ }
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: wrote %s %d bytes%s %d left %p\n", __func__,
+ ep->ep.name, count,
+ is_last ? "/L" : "",
+ req->req.length - req->req.actual - count, req);
+
+ /* requests complete when all IN data is in the FIFO */
+ if (is_last) {
+ ep->dev->ep0state = WAIT_FOR_SETUP;
+ return 1;
+ }
+
+ return 0;
+}
+
+static int dwc2_fifo_read(struct dwc2_ep *ep, u32 *cp, int max)
+{
+ invalidate_dcache_range((unsigned long)cp, (unsigned long)cp +
+ ROUND(max, CONFIG_SYS_CACHELINE_SIZE));
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: bytes=%d, ep_index=%d 0x%p\n", __func__,
+ max, ep_index(ep), cp);
+
+ return max;
+}
+
+/**
+ * udc_set_address - set the USB address for this device
+ * @address:
+ *
+ * Called from control endpoint function
+ * after it decodes a set address setup packet.
+ */
+static void udc_set_address(struct dwc2_udc *dev, unsigned char address)
+{
+ u32 ctrl = readl(®->dcfg);
+ writel(DEVICE_ADDRESS(address) | ctrl, ®->dcfg);
+
+ dwc2_udc_ep0_zlp(dev);
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: USB OTG 2.0 Device address=%d, DCFG=0x%x\n",
+ __func__, address, readl(®->dcfg));
+
+ dev->usb_address = address;
+}
+
+static inline void dwc2_udc_ep0_set_stall(struct dwc2_ep *ep)
+{
+ struct dwc2_udc *dev;
+ u32 ep_ctrl = 0;
+
+ dev = ep->dev;
+ ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
+
+ /* set the disable and stall bits */
+ if (ep_ctrl & DEPCTL_EPENA)
+ ep_ctrl |= DEPCTL_EPDIS;
+
+ ep_ctrl |= DEPCTL_STALL;
+
+ writel(ep_ctrl, ®->in_endp[EP0_CON].diepctl);
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: set ep%d stall, DIEPCTL0 = 0x%p\n",
+ __func__, ep_index(ep), ®->in_endp[EP0_CON].diepctl);
+ /*
+ * The application can only set this bit, and the core clears it,
+ * when a SETUP token is received for this endpoint
+ */
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ dwc2_udc_pre_setup();
+}
+
+static void dwc2_ep0_read(struct dwc2_udc *dev)
+{
+ struct dwc2_request *req;
+ struct dwc2_ep *ep = &dev->ep[0];
+
+ if (!list_empty(&ep->queue)) {
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+
+ } else {
+ debug("%s: ---> BUG\n", __func__);
+ BUG();
+ return;
+ }
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: req = %p, req.length = 0x%x, req.actual = 0x%x\n",
+ __func__, req, req->req.length, req->req.actual);
+
+ if (req->req.length == 0) {
+ /* zlp for Set_configuration, Set_interface,
+ * or Bulk-Only mass storge reset */
+
+ ep->len = 0;
+ dwc2_udc_ep0_zlp(dev);
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: req.length = 0, bRequest = %d\n",
+ __func__, usb_ctrl->bRequest);
+ return;
+ }
+
+ setdma_rx(ep, req);
+}
+
+/*
+ * DATA_STATE_XMIT
+ */
+static int dwc2_ep0_write(struct dwc2_udc *dev)
+{
+ struct dwc2_request *req;
+ struct dwc2_ep *ep = &dev->ep[0];
+ int ret, need_zlp = 0;
+
+ if (list_empty(&ep->queue))
+ req = 0;
+ else
+ req = list_entry(ep->queue.next, struct dwc2_request, queue);
+
+ if (!req) {
+ debug_cond(DEBUG_EP0 != 0, "%s: NULL REQ\n", __func__);
+ return 0;
+ }
+
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: req = %p, req.length = 0x%x, req.actual = 0x%x\n",
+ __func__, req, req->req.length, req->req.actual);
+
+ if (req->req.length - req->req.actual == ep0_fifo_size) {
+ /* Next write will end with the packet size, */
+ /* so we need Zero-length-packet */
+ need_zlp = 1;
+ }
+
+ ret = write_fifo_ep0(ep, req);
+
+ if ((ret == 1) && !need_zlp) {
+ /* Last packet */
+ dev->ep0state = WAIT_FOR_COMPLETE;
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: finished, waiting for status\n", __func__);
+
+ } else {
+ dev->ep0state = DATA_STATE_XMIT;
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: not finished\n", __func__);
+ }
+
+ return 1;
+}
+
+static int dwc2_udc_get_status(struct dwc2_udc *dev,
+ struct usb_ctrlrequest *crq)
+{
+ u8 ep_num = crq->wIndex & 0x7F;
+ u16 g_status = 0;
+ u32 ep_ctrl;
+
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_GET_STATUS\n", __func__);
+ printf("crq->brequest:0x%x\n", crq->bRequestType & USB_RECIP_MASK);
+ switch (crq->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_INTERFACE:
+ g_status = 0;
+ debug_cond(DEBUG_SETUP != 0,
+ "\tGET_STATUS:USB_RECIP_INTERFACE, g_stauts = %d\n",
+ g_status);
+ break;
+
+ case USB_RECIP_DEVICE:
+ g_status = 0x1; /* Self powered */
+ debug_cond(DEBUG_SETUP != 0,
+ "\tGET_STATUS: USB_RECIP_DEVICE, g_stauts = %d\n",
+ g_status);
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ if (crq->wLength > 2) {
+ debug_cond(DEBUG_SETUP != 0,
+ "\tGET_STATUS:Not support EP or wLength\n");
+ return 1;
+ }
+
+ g_status = dev->ep[ep_num].stopped;
+ debug_cond(DEBUG_SETUP != 0,
+ "\tGET_STATUS: USB_RECIP_ENDPOINT, g_stauts = %d\n",
+ g_status);
+
+ break;
+
+ default:
+ return 1;
+ }
+
+ memcpy(usb_ctrl, &g_status, sizeof(g_status));
+
+ flush_dcache_range((unsigned long) usb_ctrl,
+ (unsigned long) usb_ctrl +
+ ROUND(sizeof(g_status), CONFIG_SYS_CACHELINE_SIZE));
+
+ writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma);
+ writel(DIEPT_SIZ_PKT_CNT(1) | DIEPT_SIZ_XFER_SIZE(2),
+ ®->in_endp[EP0_CON].dieptsiz);
+
+ ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
+ writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
+ ®->in_endp[EP0_CON].diepctl);
+ dev->ep0state = WAIT_FOR_NULL_COMPLETE;
+
+ return 0;
+}
+
+static void dwc2_udc_set_nak(struct dwc2_ep *ep)
+{
+ u8 ep_num;
+ u32 ep_ctrl = 0;
+
+ ep_num = ep_index(ep);
+ debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
+
+ if (ep_is_in(ep)) {
+ ep_ctrl = readl(®->in_endp[ep_num].diepctl);
+ ep_ctrl |= DEPCTL_SNAK;
+ writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
+ debug("%s: set NAK, DIEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
+ } else {
+ ep_ctrl = readl(®->out_endp[ep_num].doepctl);
+ ep_ctrl |= DEPCTL_SNAK;
+ writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
+ debug("%s: set NAK, DOEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
+ }
+
+ return;
+}
+
+
+static void dwc2_udc_ep_set_stall(struct dwc2_ep *ep)
+{
+ u8 ep_num;
+ u32 ep_ctrl = 0;
+
+ ep_num = ep_index(ep);
+ debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
+
+ if (ep_is_in(ep)) {
+ ep_ctrl = readl(®->in_endp[ep_num].diepctl);
+
+ /* set the disable and stall bits */
+ if (ep_ctrl & DEPCTL_EPENA)
+ ep_ctrl |= DEPCTL_EPDIS;
+
+ ep_ctrl |= DEPCTL_STALL;
+
+ writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
+ debug("%s: set stall, DIEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
+
+ } else {
+ ep_ctrl = readl(®->out_endp[ep_num].doepctl);
+
+ /* set the stall bit */
+ ep_ctrl |= DEPCTL_STALL;
+
+ writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
+ debug("%s: set stall, DOEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
+ }
+
+ return;
+}
+
+static void dwc2_udc_ep_clear_stall(struct dwc2_ep *ep)
+{
+ u8 ep_num;
+ u32 ep_ctrl = 0;
+
+ ep_num = ep_index(ep);
+ debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
+
+ if (ep_is_in(ep)) {
+ ep_ctrl = readl(®->in_endp[ep_num].diepctl);
+
+ /* clear stall bit */
+ ep_ctrl &= ~DEPCTL_STALL;
+
+ /*
+ * USB Spec 9.4.5: For endpoints using data toggle, regardless
+ * of whether an endpoint has the Halt feature set, a
+ * ClearFeature(ENDPOINT_HALT) request always results in the
+ * data toggle being reinitialized to DATA0.
+ */
+ if (ep->bmAttributes == USB_ENDPOINT_XFER_INT
+ || ep->bmAttributes == USB_ENDPOINT_XFER_BULK) {
+ ep_ctrl |= DEPCTL_SETD0PID; /* DATA0 */
+ }
+
+ writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
+ debug("%s: cleared stall, DIEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
+
+ } else {
+ ep_ctrl = readl(®->out_endp[ep_num].doepctl);
+
+ /* clear stall bit */
+ ep_ctrl &= ~DEPCTL_STALL;
+
+ if (ep->bmAttributes == USB_ENDPOINT_XFER_INT
+ || ep->bmAttributes == USB_ENDPOINT_XFER_BULK) {
+ ep_ctrl |= DEPCTL_SETD0PID; /* DATA0 */
+ }
+
+ writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
+ debug("%s: cleared stall, DOEPCTL%d = 0x%x\n",
+ __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
+ }
+
+ return;
+}
+
+static int dwc2_udc_set_halt(struct usb_ep *_ep, int value)
+{
+ struct dwc2_ep *ep;
+ struct dwc2_udc *dev;
+ unsigned long flags = 0;
+ u8 ep_num;
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ ep_num = ep_index(ep);
+
+ if (unlikely(!_ep || !ep->desc || ep_num == EP0_CON ||
+ ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC)) {
+ debug("%s: %s bad ep or descriptor\n", __func__, ep->ep.name);
+ return -EINVAL;
+ }
+
+ /* Attempt to halt IN ep will fail if any transfer requests
+ * are still queue */
+ if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
+ debug("%s: %s queue not empty, req = %p\n",
+ __func__, ep->ep.name,
+ list_entry(ep->queue.next, struct dwc2_request, queue));
+
+ return -EAGAIN;
+ }
+
+ dev = ep->dev;
+ debug("%s: ep_num = %d, value = %d\n", __func__, ep_num, value);
+
+ spin_lock_irqsave(&dev->lock, flags);
+
+ if (value == 0) {
+ ep->stopped = 0;
+ dwc2_udc_ep_clear_stall(ep);
+ } else {
+ if (ep_num == 0)
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ ep->stopped = 1;
+ dwc2_udc_ep_set_stall(ep);
+ }
+
+ spin_unlock_irqrestore(&dev->lock, flags);
+
+ return 0;
+}
+
+static void dwc2_udc_ep_activate(struct dwc2_ep *ep)
+{
+ u8 ep_num;
+ u32 ep_ctrl = 0, daintmsk = 0;
+
+ ep_num = ep_index(ep);
+
+ /* Read DEPCTLn register */
+ if (ep_is_in(ep)) {
+ ep_ctrl = readl(®->in_endp[ep_num].diepctl);
+ daintmsk = 1 << ep_num;
+ } else {
+ ep_ctrl = readl(®->out_endp[ep_num].doepctl);
+ daintmsk = (1 << ep_num) << DAINT_OUT_BIT;
+ }
+
+ debug("%s: EPCTRL%d = 0x%x, ep_is_in = %d\n",
+ __func__, ep_num, ep_ctrl, ep_is_in(ep));
+
+ /* If the EP is already active don't change the EP Control
+ * register. */
+ if (!(ep_ctrl & DEPCTL_USBACTEP)) {
+ ep_ctrl = (ep_ctrl & ~DEPCTL_TYPE_MASK) |
+ (ep->bmAttributes << DEPCTL_TYPE_BIT);
+ ep_ctrl = (ep_ctrl & ~DEPCTL_MPS_MASK) |
+ (ep->ep.maxpacket << DEPCTL_MPS_BIT);
+ ep_ctrl |= (DEPCTL_SETD0PID | DEPCTL_USBACTEP | DEPCTL_SNAK);
+
+ if (ep_is_in(ep)) {
+ writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
+ debug("%s: USB Ative EP%d, DIEPCTRL%d = 0x%x\n",
+ __func__, ep_num, ep_num,
+ readl(®->in_endp[ep_num].diepctl));
+ } else {
+ writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
+ debug("%s: USB Ative EP%d, DOEPCTRL%d = 0x%x\n",
+ __func__, ep_num, ep_num,
+ readl(®->out_endp[ep_num].doepctl));
+ }
+ }
+
+ /* Unmask EP Interrtupt */
+ writel(readl(®->daintmsk)|daintmsk, ®->daintmsk);
+ debug("%s: DAINTMSK = 0x%x\n", __func__, readl(®->daintmsk));
+
+}
+
+static int dwc2_udc_clear_feature(struct usb_ep *_ep)
+{
+ struct dwc2_udc *dev;
+ struct dwc2_ep *ep;
+ u8 ep_num;
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ ep_num = ep_index(ep);
+
+ dev = ep->dev;
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: ep_num = %d, is_in = %d, clear_feature_flag = %d\n",
+ __func__, ep_num, ep_is_in(ep), clear_feature_flag);
+
+ if (usb_ctrl->wLength != 0) {
+ debug_cond(DEBUG_SETUP != 0,
+ "\tCLEAR_FEATURE: wLength is not zero.....\n");
+ return 1;
+ }
+
+ switch (usb_ctrl->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ switch (usb_ctrl->wValue) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tOFF:USB_DEVICE_REMOTE_WAKEUP\n");
+ break;
+
+ case USB_DEVICE_TEST_MODE:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tCLEAR_FEATURE: USB_DEVICE_TEST_MODE\n");
+ /** @todo Add CLEAR_FEATURE for TEST modes. */
+ break;
+ }
+
+ dwc2_udc_ep0_zlp(dev);
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tCLEAR_FEATURE:USB_RECIP_ENDPOINT, wValue = %d\n",
+ usb_ctrl->wValue);
+
+ if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
+ if (ep_num == 0) {
+ dwc2_udc_ep0_set_stall(ep);
+ return 0;
+ }
+
+ dwc2_udc_ep0_zlp(dev);
+
+ dwc2_udc_ep_clear_stall(ep);
+ dwc2_udc_ep_activate(ep);
+ ep->stopped = 0;
+
+ clear_feature_num = ep_num;
+ clear_feature_flag = 1;
+ }
+ break;
+ }
+
+ return 0;
+}
+
+static int dwc2_udc_set_feature(struct usb_ep *_ep)
+{
+ struct dwc2_udc *dev;
+ struct dwc2_ep *ep;
+ u8 ep_num;
+
+ ep = container_of(_ep, struct dwc2_ep, ep);
+ ep_num = ep_index(ep);
+ dev = ep->dev;
+
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_SET_FEATURE , ep_num = %d\n",
+ __func__, ep_num);
+
+ if (usb_ctrl->wLength != 0) {
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE: wLength is not zero.....\n");
+ return 1;
+ }
+
+ switch (usb_ctrl->bRequestType & USB_RECIP_MASK) {
+ case USB_RECIP_DEVICE:
+ switch (usb_ctrl->wValue) {
+ case USB_DEVICE_REMOTE_WAKEUP:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE:USB_DEVICE_REMOTE_WAKEUP\n");
+ break;
+ case USB_DEVICE_B_HNP_ENABLE:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
+ break;
+
+ case USB_DEVICE_A_HNP_SUPPORT:
+ /* RH port supports HNP */
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE:USB_DEVICE_A_HNP_SUPPORT\n");
+ break;
+
+ case USB_DEVICE_A_ALT_HNP_SUPPORT:
+ /* other RH port does */
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
+ break;
+ }
+
+ dwc2_udc_ep0_zlp(dev);
+ return 0;
+
+ case USB_RECIP_INTERFACE:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE: USB_RECIP_INTERFACE\n");
+ break;
+
+ case USB_RECIP_ENDPOINT:
+ debug_cond(DEBUG_SETUP != 0,
+ "\tSET_FEATURE: USB_RECIP_ENDPOINT\n");
+ if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
+ if (ep_num == 0) {
+ dwc2_udc_ep0_set_stall(ep);
+ return 0;
+ }
+ ep->stopped = 1;
+ dwc2_udc_ep_set_stall(ep);
+ }
+
+ dwc2_udc_ep0_zlp(dev);
+ return 0;
+ }
+
+ return 1;
+}
+
+/*
+ * WAIT_FOR_SETUP (OUT_PKT_RDY)
+ */
+static void dwc2_ep0_setup(struct dwc2_udc *dev)
+{
+ struct dwc2_ep *ep = &dev->ep[0];
+ int i;
+ u8 ep_num;
+
+ /* Nuke all previous transfers */
+ nuke(ep, -EPROTO);
+
+ /* read control req from fifo (8 bytes) */
+ dwc2_fifo_read(ep, (u32 *)usb_ctrl, 8);
+
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: bRequestType = 0x%x(%s), bRequest = 0x%x"
+ "\twLength = 0x%x, wValue = 0x%x, wIndex= 0x%x\n",
+ __func__, usb_ctrl->bRequestType,
+ (usb_ctrl->bRequestType & USB_DIR_IN) ? "IN" : "OUT",
+ usb_ctrl->bRequest,
+ usb_ctrl->wLength, usb_ctrl->wValue, usb_ctrl->wIndex);
+
+#ifdef DEBUG
+ {
+ int i, len = sizeof(*usb_ctrl);
+ char *p = (char *)usb_ctrl;
+
+ printf("pkt = ");
+ for (i = 0; i < len; i++) {
+ printf("%02x", ((u8 *)p)[i]);
+ if ((i & 7) == 7)
+ printf(" ");
+ }
+ printf("\n");
+ }
+#endif
+
+ if (usb_ctrl->bRequest == GET_MAX_LUN_REQUEST &&
+ usb_ctrl->wLength != 1) {
+ debug_cond(DEBUG_SETUP != 0,
+ "\t%s:GET_MAX_LUN_REQUEST:invalid",
+ __func__);
+ debug_cond(DEBUG_SETUP != 0,
+ "wLength = %d, setup returned\n",
+ usb_ctrl->wLength);
+
+ dwc2_udc_ep0_set_stall(ep);
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ return;
+ } else if (usb_ctrl->bRequest == BOT_RESET_REQUEST &&
+ usb_ctrl->wLength != 0) {
+ /* Bulk-Only *mass storge reset of class-specific request */
+ debug_cond(DEBUG_SETUP != 0,
+ "%s:BOT Rest:invalid wLength =%d, setup returned\n",
+ __func__, usb_ctrl->wLength);
+
+ dwc2_udc_ep0_set_stall(ep);
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ return;
+ }
+
+ /* Set direction of EP0 */
+ if (likely(usb_ctrl->bRequestType & USB_DIR_IN)) {
+ ep->bEndpointAddress |= USB_DIR_IN;
+ } else {
+ ep->bEndpointAddress &= ~USB_DIR_IN;
+ }
+ /* cope with automagic for some standard requests. */
+ dev->req_std = (usb_ctrl->bRequestType & USB_TYPE_MASK)
+ == USB_TYPE_STANDARD;
+
+ dev->req_pending = 1;
+
+ /* Handle some SETUP packets ourselves */
+ if (dev->req_std) {
+ switch (usb_ctrl->bRequest) {
+ case USB_REQ_SET_ADDRESS:
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_SET_ADDRESS (%d)\n",
+ __func__, usb_ctrl->wValue);
+ if (usb_ctrl->bRequestType
+ != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
+ break;
+
+ udc_set_address(dev, usb_ctrl->wValue);
+ return;
+
+ case USB_REQ_SET_CONFIGURATION:
+ debug_cond(DEBUG_SETUP != 0,
+ "=====================================\n");
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: USB_REQ_SET_CONFIGURATION (%d)\n",
+ __func__, usb_ctrl->wValue);
+
+ if (usb_ctrl->bRequestType == USB_RECIP_DEVICE)
+ reset_available = 1;
+
+ break;
+
+ case USB_REQ_GET_DESCRIPTOR:
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_GET_DESCRIPTOR\n",
+ __func__);
+ break;
+
+ case USB_REQ_SET_INTERFACE:
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_SET_INTERFACE (%d)\n",
+ __func__, usb_ctrl->wValue);
+
+ if (usb_ctrl->bRequestType == USB_RECIP_INTERFACE)
+ reset_available = 1;
+
+ break;
+
+ case USB_REQ_GET_CONFIGURATION:
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** USB_REQ_GET_CONFIGURATION\n",
+ __func__);
+ break;
+
+ case USB_REQ_GET_STATUS:
+ if (!dwc2_udc_get_status(dev, usb_ctrl))
+ return;
+
+ break;
+
+ case USB_REQ_CLEAR_FEATURE:
+ ep_num = usb_ctrl->wIndex & 0x7f;
+
+ if (!dwc2_udc_clear_feature(&dev->ep[ep_num].ep))
+ return;
+
+ break;
+
+ case USB_REQ_SET_FEATURE:
+ ep_num = usb_ctrl->wIndex & 0x7f;
+
+ if (!dwc2_udc_set_feature(&dev->ep[ep_num].ep))
+ return;
+
+ break;
+
+ default:
+ debug_cond(DEBUG_SETUP != 0,
+ "%s: *** Default of usb_ctrl->bRequest=0x%x"
+ "happened.\n", __func__, usb_ctrl->bRequest);
+ break;
+ }
+ }
+
+
+ if (likely(dev->driver)) {
+ /* device-2-host (IN) or no data setup command,
+ * process immediately */
+ debug_cond(DEBUG_SETUP != 0,
+ "%s:usb_ctrlreq will be passed to fsg_setup()\n",
+ __func__);
+
+ spin_unlock(&dev->lock);
+ i = dev->driver->setup(&dev->gadget, usb_ctrl);
+ spin_lock(&dev->lock);
+
+ if (i < 0) {
+ /* setup processing failed, force stall */
+ dwc2_udc_ep0_set_stall(ep);
+ dev->ep0state = WAIT_FOR_SETUP;
+
+ debug_cond(DEBUG_SETUP != 0,
+ "\tdev->driver->setup failed (%d),"
+ " bRequest = %d\n",
+ i, usb_ctrl->bRequest);
+
+
+ } else if (dev->req_pending) {
+ dev->req_pending = 0;
+ debug_cond(DEBUG_SETUP != 0,
+ "\tdev->req_pending...\n");
+ }
+
+ debug_cond(DEBUG_SETUP != 0,
+ "\tep0state = %s\n", state_names[dev->ep0state]);
+
+ }
+}
+
+/*
+ * handle ep0 interrupt
+ */
+static void dwc2_handle_ep0(struct dwc2_udc *dev)
+{
+ if (dev->ep0state == WAIT_FOR_SETUP) {
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: WAIT_FOR_SETUP\n", __func__);
+ dwc2_ep0_setup(dev);
+
+ } else {
+ debug_cond(DEBUG_OUT_EP != 0,
+ "%s: strange state!!(state = %s)\n",
+ __func__, state_names[dev->ep0state]);
+ }
+}
+
+static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep)
+{
+ debug_cond(DEBUG_EP0 != 0,
+ "%s: ep_is_in = %d\n", __func__, ep_is_in(ep));
+ if (ep_is_in(ep)) {
+ dev->ep0state = DATA_STATE_XMIT;
+ dwc2_ep0_write(dev);
+
+ } else {
+ dev->ep0state = DATA_STATE_RECV;
+ dwc2_ep0_read(dev);
+ }
+}
+++ /dev/null
-/*
- * drivers/usb/gadget/s3c_udc_otg.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
- *
- * Copyright (C) 2008 for Samsung Electronics
- *
- * BSP Support for Samsung's UDC driver
- * available at:
- * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
- *
- * State machine bugfixes:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * Ported to u-boot:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- * Lukasz Majewski <l.majewski@samsumg.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-#undef DEBUG
-#include <common.h>
-#include <asm/errno.h>
-#include <linux/list.h>
-#include <malloc.h>
-
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-#include <asm/io.h>
-
-#include <asm/mach-types.h>
-
-#include "dwc2_udc_otg_regs.h"
-#include "dwc2_udc_otg_priv.h"
-#include <usb/lin_gadget_compat.h>
-
-/***********************************************************/
-
-#define OTG_DMA_MODE 1
-
-#define DEBUG_SETUP 0
-#define DEBUG_EP0 0
-#define DEBUG_ISR 0
-#define DEBUG_OUT_EP 0
-#define DEBUG_IN_EP 0
-
-#include <usb/s3c_udc.h>
-
-#define EP0_CON 0
-#define EP_MASK 0xF
-
-static char *state_names[] = {
- "WAIT_FOR_SETUP",
- "DATA_STATE_XMIT",
- "DATA_STATE_NEED_ZLP",
- "WAIT_FOR_OUT_STATUS",
- "DATA_STATE_RECV",
- "WAIT_FOR_COMPLETE",
- "WAIT_FOR_OUT_COMPLETE",
- "WAIT_FOR_IN_COMPLETE",
- "WAIT_FOR_NULL_COMPLETE",
-};
-
-#define DRIVER_DESC "DWC2 HS USB OTG Device Driver, (c) Samsung Electronics"
-#define DRIVER_VERSION "15 March 2009"
-
-struct dwc2_udc *the_controller;
-
-static const char driver_name[] = "dwc2-udc";
-static const char driver_desc[] = DRIVER_DESC;
-static const char ep0name[] = "ep0-control";
-
-/* Max packet size*/
-static unsigned int ep0_fifo_size = 64;
-static unsigned int ep_fifo_size = 512;
-static unsigned int ep_fifo_size2 = 1024;
-static int reset_available = 1;
-
-static struct usb_ctrlrequest *usb_ctrl;
-static dma_addr_t usb_ctrl_dma_addr;
-
-/*
- Local declarations.
-*/
-static int dwc2_ep_enable(struct usb_ep *ep,
- const struct usb_endpoint_descriptor *);
-static int dwc2_ep_disable(struct usb_ep *ep);
-static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
- gfp_t gfp_flags);
-static void dwc2_free_request(struct usb_ep *ep, struct usb_request *);
-
-static int dwc2_queue(struct usb_ep *ep, struct usb_request *, gfp_t gfp_flags);
-static int dwc2_dequeue(struct usb_ep *ep, struct usb_request *);
-static int dwc2_fifo_status(struct usb_ep *ep);
-static void dwc2_fifo_flush(struct usb_ep *ep);
-static void dwc2_ep0_read(struct dwc2_udc *dev);
-static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep);
-static void dwc2_handle_ep0(struct dwc2_udc *dev);
-static int dwc2_ep0_write(struct dwc2_udc *dev);
-static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req);
-static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status);
-static void stop_activity(struct dwc2_udc *dev,
- struct usb_gadget_driver *driver);
-static int udc_enable(struct dwc2_udc *dev);
-static void udc_set_address(struct dwc2_udc *dev, unsigned char address);
-static void reconfig_usbd(struct dwc2_udc *dev);
-static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed);
-static void nuke(struct dwc2_ep *ep, int status);
-static int dwc2_udc_set_halt(struct usb_ep *_ep, int value);
-static void dwc2_udc_set_nak(struct dwc2_ep *ep);
-
-void set_udc_gadget_private_data(void *p)
-{
- debug_cond(DEBUG_SETUP != 0,
- "%s: the_controller: 0x%p, p: 0x%p\n", __func__,
- the_controller, p);
- the_controller->gadget.dev.device_data = p;
-}
-
-void *get_udc_gadget_private_data(struct usb_gadget *gadget)
-{
- return gadget->dev.device_data;
-}
-
-static struct usb_ep_ops dwc2_ep_ops = {
- .enable = dwc2_ep_enable,
- .disable = dwc2_ep_disable,
-
- .alloc_request = dwc2_alloc_request,
- .free_request = dwc2_free_request,
-
- .queue = dwc2_queue,
- .dequeue = dwc2_dequeue,
-
- .set_halt = dwc2_udc_set_halt,
- .fifo_status = dwc2_fifo_status,
- .fifo_flush = dwc2_fifo_flush,
-};
-
-#define create_proc_files() do {} while (0)
-#define remove_proc_files() do {} while (0)
-
-/***********************************************************/
-
-void __iomem *regs_otg;
-struct dwc2_usbotg_reg *reg;
-
-bool dfu_usb_get_reset(void)
-{
- return !!(readl(®->gintsts) & INT_RESET);
-}
-
-__weak void otg_phy_init(struct dwc2_udc *dev) {}
-__weak void otg_phy_off(struct dwc2_udc *dev) {}
-
-/***********************************************************/
-
-#include "s3c_udc_otg_xfer_dma.c"
-
-/*
- * udc_disable - disable USB device controller
- */
-static void udc_disable(struct dwc2_udc *dev)
-{
- debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
-
- udc_set_address(dev, 0);
-
- dev->ep0state = WAIT_FOR_SETUP;
- dev->gadget.speed = USB_SPEED_UNKNOWN;
- dev->usb_address = 0;
-
- otg_phy_off(dev);
-}
-
-/*
- * udc_reinit - initialize software state
- */
-static void udc_reinit(struct dwc2_udc *dev)
-{
- unsigned int i;
-
- debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
-
- /* device/ep0 records init */
- INIT_LIST_HEAD(&dev->gadget.ep_list);
- INIT_LIST_HEAD(&dev->gadget.ep0->ep_list);
- dev->ep0state = WAIT_FOR_SETUP;
-
- /* basic endpoint records init */
- for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
- struct dwc2_ep *ep = &dev->ep[i];
-
- if (i != 0)
- list_add_tail(&ep->ep.ep_list, &dev->gadget.ep_list);
-
- ep->desc = 0;
- ep->stopped = 0;
- INIT_LIST_HEAD(&ep->queue);
- ep->pio_irqs = 0;
- }
-
- /* the rest was statically initialized, and is read-only */
-}
-
-#define BYTES2MAXP(x) (x / 8)
-#define MAXP2BYTES(x) (x * 8)
-
-/* until it's enabled, this UDC should be completely invisible
- * to any USB host.
- */
-static int udc_enable(struct dwc2_udc *dev)
-{
- debug_cond(DEBUG_SETUP != 0, "%s: %p\n", __func__, dev);
-
- otg_phy_init(dev);
- reconfig_usbd(dev);
-
- debug_cond(DEBUG_SETUP != 0,
- "DWC2 USB 2.0 OTG Controller Core Initialized : 0x%x\n",
- readl(®->gintmsk));
-
- dev->gadget.speed = USB_SPEED_UNKNOWN;
-
- return 0;
-}
-
-/*
- Register entry point for the peripheral controller driver.
-*/
-int usb_gadget_register_driver(struct usb_gadget_driver *driver)
-{
- struct dwc2_udc *dev = the_controller;
- int retval = 0;
- unsigned long flags = 0;
-
- debug_cond(DEBUG_SETUP != 0, "%s: %s\n", __func__, "no name");
-
- if (!driver
- || (driver->speed != USB_SPEED_FULL
- && driver->speed != USB_SPEED_HIGH)
- || !driver->bind || !driver->disconnect || !driver->setup)
- return -EINVAL;
- if (!dev)
- return -ENODEV;
- if (dev->driver)
- return -EBUSY;
-
- spin_lock_irqsave(&dev->lock, flags);
- /* first hook up the driver ... */
- dev->driver = driver;
- spin_unlock_irqrestore(&dev->lock, flags);
-
- if (retval) { /* TODO */
- printf("target device_add failed, error %d\n", retval);
- return retval;
- }
-
- retval = driver->bind(&dev->gadget);
- if (retval) {
- debug_cond(DEBUG_SETUP != 0,
- "%s: bind to driver --> error %d\n",
- dev->gadget.name, retval);
- dev->driver = 0;
- return retval;
- }
-
- enable_irq(IRQ_OTG);
-
- debug_cond(DEBUG_SETUP != 0,
- "Registered gadget driver %s\n", dev->gadget.name);
- udc_enable(dev);
-
- return 0;
-}
-
-/*
- * Unregister entry point for the peripheral controller driver.
- */
-int usb_gadget_unregister_driver(struct usb_gadget_driver *driver)
-{
- struct dwc2_udc *dev = the_controller;
- unsigned long flags = 0;
-
- if (!dev)
- return -ENODEV;
- if (!driver || driver != dev->driver)
- return -EINVAL;
-
- spin_lock_irqsave(&dev->lock, flags);
- dev->driver = 0;
- stop_activity(dev, driver);
- spin_unlock_irqrestore(&dev->lock, flags);
-
- driver->unbind(&dev->gadget);
-
- disable_irq(IRQ_OTG);
-
- udc_disable(dev);
- return 0;
-}
-
-/*
- * done - retire a request; caller blocked irqs
- */
-static void done(struct dwc2_ep *ep, struct dwc2_request *req, int status)
-{
- unsigned int stopped = ep->stopped;
-
- debug("%s: %s %p, req = %p, stopped = %d\n",
- __func__, ep->ep.name, ep, &req->req, stopped);
-
- list_del_init(&req->queue);
-
- if (likely(req->req.status == -EINPROGRESS))
- req->req.status = status;
- else
- status = req->req.status;
-
- if (status && status != -ESHUTDOWN) {
- debug("complete %s req %p stat %d len %u/%u\n",
- ep->ep.name, &req->req, status,
- req->req.actual, req->req.length);
- }
-
- /* don't modify queue heads during completion callback */
- ep->stopped = 1;
-
-#ifdef DEBUG
- printf("calling complete callback\n");
- {
- int i, len = req->req.length;
-
- printf("pkt[%d] = ", req->req.length);
- if (len > 64)
- len = 64;
- for (i = 0; i < len; i++) {
- printf("%02x", ((u8 *)req->req.buf)[i]);
- if ((i & 7) == 7)
- printf(" ");
- }
- printf("\n");
- }
-#endif
- spin_unlock(&ep->dev->lock);
- req->req.complete(&ep->ep, &req->req);
- spin_lock(&ep->dev->lock);
-
- debug("callback completed\n");
-
- ep->stopped = stopped;
-}
-
-/*
- * nuke - dequeue ALL requests
- */
-static void nuke(struct dwc2_ep *ep, int status)
-{
- struct dwc2_request *req;
-
- debug("%s: %s %p\n", __func__, ep->ep.name, ep);
-
- /* called with irqs blocked */
- while (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
- done(ep, req, status);
- }
-}
-
-static void stop_activity(struct dwc2_udc *dev,
- struct usb_gadget_driver *driver)
-{
- int i;
-
- /* don't disconnect drivers more than once */
- if (dev->gadget.speed == USB_SPEED_UNKNOWN)
- driver = 0;
- dev->gadget.speed = USB_SPEED_UNKNOWN;
-
- /* prevent new request submissions, kill any outstanding requests */
- for (i = 0; i < S3C_MAX_ENDPOINTS; i++) {
- struct dwc2_ep *ep = &dev->ep[i];
- ep->stopped = 1;
- nuke(ep, -ESHUTDOWN);
- }
-
- /* report disconnect; the driver is already quiesced */
- if (driver) {
- spin_unlock(&dev->lock);
- driver->disconnect(&dev->gadget);
- spin_lock(&dev->lock);
- }
-
- /* re-init driver-visible data structures */
- udc_reinit(dev);
-}
-
-static void reconfig_usbd(struct dwc2_udc *dev)
-{
- /* 2. Soft-reset OTG Core and then unreset again. */
- int i;
- unsigned int uTemp = writel(CORE_SOFT_RESET, ®->grstctl);
- uint32_t dflt_gusbcfg;
-
- debug("Reseting OTG controller\n");
-
- dflt_gusbcfg =
- 0<<15 /* PHY Low Power Clock sel*/
- |1<<14 /* Non-Periodic TxFIFO Rewind Enable*/
- |0x5<<10 /* Turnaround time*/
- |0<<9 | 0<<8 /* [0:HNP disable,1:HNP enable][ 0:SRP disable*/
- /* 1:SRP enable] H1= 1,1*/
- |0<<7 /* Ulpi DDR sel*/
- |0<<6 /* 0: high speed utmi+, 1: full speed serial*/
- |0<<4 /* 0: utmi+, 1:ulpi*/
- |1<<3 /* phy i/f 0:8bit, 1:16bit*/
- |0x7<<0; /* HS/FS Timeout**/
-
- if (dev->pdata->usb_gusbcfg)
- dflt_gusbcfg = dev->pdata->usb_gusbcfg;
-
- writel(dflt_gusbcfg, ®->gusbcfg);
-
- /* 3. Put the OTG device core in the disconnected state.*/
- uTemp = readl(®->dctl);
- uTemp |= SOFT_DISCONNECT;
- writel(uTemp, ®->dctl);
-
- udelay(20);
-
- /* 4. Make the OTG device core exit from the disconnected state.*/
- uTemp = readl(®->dctl);
- uTemp = uTemp & ~SOFT_DISCONNECT;
- writel(uTemp, ®->dctl);
-
- /* 5. Configure OTG Core to initial settings of device mode.*/
- /* [][1: full speed(30Mhz) 0:high speed]*/
- writel(EP_MISS_CNT(1) | DEV_SPEED_HIGH_SPEED_20, ®->dcfg);
-
- mdelay(1);
-
- /* 6. Unmask the core interrupts*/
- writel(GINTMSK_INIT, ®->gintmsk);
-
- /* 7. Set NAK bit of EP0, EP1, EP2*/
- writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[EP0_CON].doepctl);
- writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[EP0_CON].diepctl);
-
- for (i = 1; i < S3C_MAX_ENDPOINTS; i++) {
- writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->out_endp[i].doepctl);
- writel(DEPCTL_EPDIS|DEPCTL_SNAK, ®->in_endp[i].diepctl);
- }
-
- /* 8. Unmask EPO interrupts*/
- writel(((1 << EP0_CON) << DAINT_OUT_BIT)
- | (1 << EP0_CON), ®->daintmsk);
-
- /* 9. Unmask device OUT EP common interrupts*/
- writel(DOEPMSK_INIT, ®->doepmsk);
-
- /* 10. Unmask device IN EP common interrupts*/
- writel(DIEPMSK_INIT, ®->diepmsk);
-
- /* 11. Set Rx FIFO Size (in 32-bit words) */
- writel(RX_FIFO_SIZE >> 2, ®->grxfsiz);
-
- /* 12. Set Non Periodic Tx FIFO Size */
- writel((NPTX_FIFO_SIZE >> 2) << 16 | ((RX_FIFO_SIZE >> 2)) << 0,
- ®->gnptxfsiz);
-
- for (i = 1; i < S3C_MAX_HW_ENDPOINTS; i++)
- writel((PTX_FIFO_SIZE >> 2) << 16 |
- ((RX_FIFO_SIZE + NPTX_FIFO_SIZE +
- PTX_FIFO_SIZE*(i-1)) >> 2) << 0,
- ®->dieptxf[i-1]);
-
- /* Flush the RX FIFO */
- writel(RX_FIFO_FLUSH, ®->grstctl);
- while (readl(®->grstctl) & RX_FIFO_FLUSH)
- debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
-
- /* Flush all the Tx FIFO's */
- writel(TX_FIFO_FLUSH_ALL, ®->grstctl);
- writel(TX_FIFO_FLUSH_ALL | TX_FIFO_FLUSH, ®->grstctl);
- while (readl(®->grstctl) & TX_FIFO_FLUSH)
- debug("%s: waiting for S3C_UDC_OTG_GRSTCTL\n", __func__);
-
- /* 13. Clear NAK bit of EP0, EP1, EP2*/
- /* For Slave mode*/
- /* EP0: Control OUT */
- writel(DEPCTL_EPDIS | DEPCTL_CNAK,
- ®->out_endp[EP0_CON].doepctl);
-
- /* 14. Initialize OTG Link Core.*/
- writel(GAHBCFG_INIT, ®->gahbcfg);
-}
-
-static void set_max_pktsize(struct dwc2_udc *dev, enum usb_device_speed speed)
-{
- unsigned int ep_ctrl;
- int i;
-
- if (speed == USB_SPEED_HIGH) {
- ep0_fifo_size = 64;
- ep_fifo_size = 512;
- ep_fifo_size2 = 1024;
- dev->gadget.speed = USB_SPEED_HIGH;
- } else {
- ep0_fifo_size = 64;
- ep_fifo_size = 64;
- ep_fifo_size2 = 64;
- dev->gadget.speed = USB_SPEED_FULL;
- }
-
- dev->ep[0].ep.maxpacket = ep0_fifo_size;
- for (i = 1; i < S3C_MAX_ENDPOINTS; i++)
- dev->ep[i].ep.maxpacket = ep_fifo_size;
-
- /* EP0 - Control IN (64 bytes)*/
- ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
- writel(ep_ctrl|(0<<0), ®->in_endp[EP0_CON].diepctl);
-
- /* EP0 - Control OUT (64 bytes)*/
- ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
- writel(ep_ctrl|(0<<0), ®->out_endp[EP0_CON].doepctl);
-}
-
-static int dwc2_ep_enable(struct usb_ep *_ep,
- const struct usb_endpoint_descriptor *desc)
-{
- struct dwc2_ep *ep;
- struct dwc2_udc *dev;
- unsigned long flags = 0;
-
- debug("%s: %p\n", __func__, _ep);
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- if (!_ep || !desc || ep->desc || _ep->name == ep0name
- || desc->bDescriptorType != USB_DT_ENDPOINT
- || ep->bEndpointAddress != desc->bEndpointAddress
- || ep_maxpacket(ep) <
- le16_to_cpu(get_unaligned(&desc->wMaxPacketSize))) {
-
- debug("%s: bad ep or descriptor\n", __func__);
- return -EINVAL;
- }
-
- /* xfer types must match, except that interrupt ~= bulk */
- if (ep->bmAttributes != desc->bmAttributes
- && ep->bmAttributes != USB_ENDPOINT_XFER_BULK
- && desc->bmAttributes != USB_ENDPOINT_XFER_INT) {
-
- debug("%s: %s type mismatch\n", __func__, _ep->name);
- return -EINVAL;
- }
-
- /* hardware _could_ do smaller, but driver doesn't */
- if ((desc->bmAttributes == USB_ENDPOINT_XFER_BULK
- && le16_to_cpu(get_unaligned(&desc->wMaxPacketSize)) !=
- ep_maxpacket(ep)) || !get_unaligned(&desc->wMaxPacketSize)) {
-
- debug("%s: bad %s maxpacket\n", __func__, _ep->name);
- return -ERANGE;
- }
-
- dev = ep->dev;
- if (!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN) {
-
- debug("%s: bogus device state\n", __func__);
- return -ESHUTDOWN;
- }
-
- ep->stopped = 0;
- ep->desc = desc;
- ep->pio_irqs = 0;
- ep->ep.maxpacket = le16_to_cpu(get_unaligned(&desc->wMaxPacketSize));
-
- /* Reset halt state */
- dwc2_udc_set_nak(ep);
- dwc2_udc_set_halt(_ep, 0);
-
- spin_lock_irqsave(&ep->dev->lock, flags);
- dwc2_udc_ep_activate(ep);
- spin_unlock_irqrestore(&ep->dev->lock, flags);
-
- debug("%s: enabled %s, stopped = %d, maxpacket = %d\n",
- __func__, _ep->name, ep->stopped, ep->ep.maxpacket);
- return 0;
-}
-
-/*
- * Disable EP
- */
-static int dwc2_ep_disable(struct usb_ep *_ep)
-{
- struct dwc2_ep *ep;
- unsigned long flags = 0;
-
- debug("%s: %p\n", __func__, _ep);
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- if (!_ep || !ep->desc) {
- debug("%s: %s not enabled\n", __func__,
- _ep ? ep->ep.name : NULL);
- return -EINVAL;
- }
-
- spin_lock_irqsave(&ep->dev->lock, flags);
-
- /* Nuke all pending requests */
- nuke(ep, -ESHUTDOWN);
-
- ep->desc = 0;
- ep->stopped = 1;
-
- spin_unlock_irqrestore(&ep->dev->lock, flags);
-
- debug("%s: disabled %s\n", __func__, _ep->name);
- return 0;
-}
-
-static struct usb_request *dwc2_alloc_request(struct usb_ep *ep,
- gfp_t gfp_flags)
-{
- struct dwc2_request *req;
-
- debug("%s: %s %p\n", __func__, ep->name, ep);
-
- req = memalign(CONFIG_SYS_CACHELINE_SIZE, sizeof(*req));
- if (!req)
- return 0;
-
- memset(req, 0, sizeof *req);
- INIT_LIST_HEAD(&req->queue);
-
- return &req->req;
-}
-
-static void dwc2_free_request(struct usb_ep *ep, struct usb_request *_req)
-{
- struct dwc2_request *req;
-
- debug("%s: %p\n", __func__, ep);
-
- req = container_of(_req, struct dwc2_request, req);
- WARN_ON(!list_empty(&req->queue));
- kfree(req);
-}
-
-/* dequeue JUST ONE request */
-static int dwc2_dequeue(struct usb_ep *_ep, struct usb_request *_req)
-{
- struct dwc2_ep *ep;
- struct dwc2_request *req;
- unsigned long flags = 0;
-
- debug("%s: %p\n", __func__, _ep);
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- if (!_ep || ep->ep.name == ep0name)
- return -EINVAL;
-
- spin_lock_irqsave(&ep->dev->lock, flags);
-
- /* 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) {
- spin_unlock_irqrestore(&ep->dev->lock, flags);
- return -EINVAL;
- }
-
- done(ep, req, -ECONNRESET);
-
- spin_unlock_irqrestore(&ep->dev->lock, flags);
- return 0;
-}
-
-/*
- * Return bytes in EP FIFO
- */
-static int dwc2_fifo_status(struct usb_ep *_ep)
-{
- int count = 0;
- struct dwc2_ep *ep;
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- if (!_ep) {
- debug("%s: bad ep\n", __func__);
- return -ENODEV;
- }
-
- debug("%s: %d\n", __func__, ep_index(ep));
-
- /* LPD can't report unclaimed bytes from IN fifos */
- if (ep_is_in(ep))
- return -EOPNOTSUPP;
-
- return count;
-}
-
-/*
- * Flush EP FIFO
- */
-static void dwc2_fifo_flush(struct usb_ep *_ep)
-{
- struct dwc2_ep *ep;
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
- debug("%s: bad ep\n", __func__);
- return;
- }
-
- debug("%s: %d\n", __func__, ep_index(ep));
-}
-
-static const struct usb_gadget_ops dwc2_udc_ops = {
- /* current versions must always be self-powered */
-};
-
-static struct dwc2_udc memory = {
- .usb_address = 0,
- .gadget = {
- .ops = &dwc2_udc_ops,
- .ep0 = &memory.ep[0].ep,
- .name = driver_name,
- },
-
- /* control endpoint */
- .ep[0] = {
- .ep = {
- .name = ep0name,
- .ops = &dwc2_ep_ops,
- .maxpacket = EP0_FIFO_SIZE,
- },
- .dev = &memory,
-
- .bEndpointAddress = 0,
- .bmAttributes = 0,
-
- .ep_type = ep_control,
- },
-
- /* first group of endpoints */
- .ep[1] = {
- .ep = {
- .name = "ep1in-bulk",
- .ops = &dwc2_ep_ops,
- .maxpacket = EP_FIFO_SIZE,
- },
- .dev = &memory,
-
- .bEndpointAddress = USB_DIR_IN | 1,
- .bmAttributes = USB_ENDPOINT_XFER_BULK,
-
- .ep_type = ep_bulk_out,
- .fifo_num = 1,
- },
-
- .ep[2] = {
- .ep = {
- .name = "ep2out-bulk",
- .ops = &dwc2_ep_ops,
- .maxpacket = EP_FIFO_SIZE,
- },
- .dev = &memory,
-
- .bEndpointAddress = USB_DIR_OUT | 2,
- .bmAttributes = USB_ENDPOINT_XFER_BULK,
-
- .ep_type = ep_bulk_in,
- .fifo_num = 2,
- },
-
- .ep[3] = {
- .ep = {
- .name = "ep3in-int",
- .ops = &dwc2_ep_ops,
- .maxpacket = EP_FIFO_SIZE,
- },
- .dev = &memory,
-
- .bEndpointAddress = USB_DIR_IN | 3,
- .bmAttributes = USB_ENDPOINT_XFER_INT,
-
- .ep_type = ep_interrupt,
- .fifo_num = 3,
- },
-};
-
-/*
- * probe - binds to the platform device
- */
-
-int s3c_udc_probe(struct s3c_plat_otg_data *pdata)
-{
- struct dwc2_udc *dev = &memory;
- int retval = 0;
-
- debug("%s: %p\n", __func__, pdata);
-
- dev->pdata = pdata;
-
- reg = (struct dwc2_usbotg_reg *)pdata->regs_otg;
-
- /* regs_otg = (void *)pdata->regs_otg; */
-
- dev->gadget.is_dualspeed = 1; /* Hack only*/
- dev->gadget.is_otg = 0;
- dev->gadget.is_a_peripheral = 0;
- dev->gadget.b_hnp_enable = 0;
- dev->gadget.a_hnp_support = 0;
- dev->gadget.a_alt_hnp_support = 0;
-
- the_controller = dev;
-
- usb_ctrl = memalign(CONFIG_SYS_CACHELINE_SIZE,
- ROUND(sizeof(struct usb_ctrlrequest),
- CONFIG_SYS_CACHELINE_SIZE));
- if (!usb_ctrl) {
- error("No memory available for UDC!\n");
- return -ENOMEM;
- }
-
- usb_ctrl_dma_addr = (dma_addr_t) usb_ctrl;
-
- udc_reinit(dev);
-
- return retval;
-}
-
-int usb_gadget_handle_interrupts(int index)
-{
- u32 intr_status = readl(®->gintsts);
- u32 gintmsk = readl(®->gintmsk);
-
- if (intr_status & gintmsk)
- return dwc2_udc_irq(1, (void *)the_controller);
- return 0;
-}
+++ /dev/null
-/*
- * drivers/usb/gadget/s3c_udc_otg.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
- *
- * Copyright (C) 2008 for Samsung Electronics
- *
- * BSP Support for Samsung's UDC driver
- * available at:
- * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
- *
- * State machine bugfixes:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * Ported to u-boot:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- * Lukasz Majewski <l.majewski@samsumg.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/errno.h>
-#include <linux/list.h>
-#include <malloc.h>
-
-#include <linux/usb/ch9.h>
-#include <linux/usb/gadget.h>
-
-#include <asm/byteorder.h>
-#include <asm/unaligned.h>
-#include <asm/io.h>
-
-#include <asm/mach-types.h>
-
-#include "dwc2_udc_otg_regs.h"
-#include "dwc2_udc_otg_priv.h"
-#include <usb/lin_gadget_compat.h>
-
-#include <usb/s3c_udc.h>
-
-void otg_phy_init(struct dwc2_udc *dev)
-{
- unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
- struct dwc2_usbotg_phy *phy =
- (struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
-
- dev->pdata->phy_control(1);
-
- /* USB PHY0 Enable */
- printf("USB PHY0 Enable\n");
-
- /* Enable PHY */
- writel(readl(usb_phy_ctrl) | USB_PHY_CTRL_EN0, usb_phy_ctrl);
-
- if (dev->pdata->usb_flags == PHY0_SLEEP) /* C210 Universal */
- writel((readl(&phy->phypwr)
- &~(PHY_0_SLEEP | OTG_DISABLE_0 | ANALOG_PWRDOWN)
- &~FORCE_SUSPEND_0), &phy->phypwr);
- else /* C110 GONI */
- writel((readl(&phy->phypwr) &~(OTG_DISABLE_0 | ANALOG_PWRDOWN)
- &~FORCE_SUSPEND_0), &phy->phypwr);
-
- if (s5p_cpu_id == 0x4412)
- writel((readl(&phy->phyclk) & ~(EXYNOS4X12_ID_PULLUP0 |
- EXYNOS4X12_COMMON_ON_N0)) | EXYNOS4X12_CLK_SEL_24MHZ,
- &phy->phyclk); /* PLL 24Mhz */
- else
- writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)) |
- CLK_SEL_24MHZ, &phy->phyclk); /* PLL 24Mhz */
-
- writel((readl(&phy->rstcon) &~(LINK_SW_RST | PHYLNK_SW_RST))
- | PHY_SW_RST0, &phy->rstcon);
- udelay(10);
- writel(readl(&phy->rstcon)
- &~(PHY_SW_RST0 | LINK_SW_RST | PHYLNK_SW_RST), &phy->rstcon);
- udelay(10);
-}
-
-void otg_phy_off(struct dwc2_udc *dev)
-{
- unsigned int usb_phy_ctrl = dev->pdata->usb_phy_ctrl;
- struct dwc2_usbotg_phy *phy =
- (struct dwc2_usbotg_phy *)dev->pdata->regs_phy;
-
- /* reset controller just in case */
- writel(PHY_SW_RST0, &phy->rstcon);
- udelay(20);
- writel(readl(&phy->phypwr) &~PHY_SW_RST0, &phy->rstcon);
- udelay(20);
-
- writel(readl(&phy->phypwr) | OTG_DISABLE_0 | ANALOG_PWRDOWN
- | FORCE_SUSPEND_0, &phy->phypwr);
-
- writel(readl(usb_phy_ctrl) &~USB_PHY_CTRL_EN0, usb_phy_ctrl);
-
- writel((readl(&phy->phyclk) & ~(ID_PULLUP0 | COMMON_ON_N0)),
- &phy->phyclk);
-
- udelay(10000);
-
- dev->pdata->phy_control(0);
-}
+++ /dev/null
-/*
- * drivers/usb/gadget/s3c_udc_otg_xfer_dma.c
- * Samsung S3C on-chip full/high speed USB OTG 2.0 device controllers
- *
- * Copyright (C) 2009 for Samsung Electronics
- *
- * BSP Support for Samsung's UDC driver
- * available at:
- * git://git.kernel.org/pub/scm/linux/kernel/git/kki_ap/linux-2.6-samsung.git
- *
- * State machine bugfixes:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- *
- * Ported to u-boot:
- * Marek Szyprowski <m.szyprowski@samsung.com>
- * Lukasz Majewski <l.majewski@samsumg.com>
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-static u8 clear_feature_num;
-int clear_feature_flag;
-
-/* Bulk-Only Mass Storage Reset (class-specific request) */
-#define GET_MAX_LUN_REQUEST 0xFE
-#define BOT_RESET_REQUEST 0xFF
-
-static inline void dwc2_udc_ep0_zlp(struct dwc2_udc *dev)
-{
- u32 ep_ctrl;
-
- writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma);
- writel(DIEPT_SIZ_PKT_CNT(1), ®->in_endp[EP0_CON].dieptsiz);
-
- ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
- writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
- ®->in_endp[EP0_CON].diepctl);
-
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
- __func__, readl(®->in_endp[EP0_CON].diepctl));
- dev->ep0state = WAIT_FOR_IN_COMPLETE;
-}
-
-static void dwc2_udc_pre_setup(void)
-{
- u32 ep_ctrl;
-
- debug_cond(DEBUG_IN_EP,
- "%s : Prepare Setup packets.\n", __func__);
-
- writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest),
- ®->out_endp[EP0_CON].doeptsiz);
- writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma);
-
- ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
- writel(ep_ctrl|DEPCTL_EPENA, ®->out_endp[EP0_CON].doepctl);
-
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
- __func__, readl(®->in_endp[EP0_CON].diepctl));
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
- __func__, readl(®->out_endp[EP0_CON].doepctl));
-
-}
-
-static inline void dwc2_ep0_complete_out(void)
-{
- u32 ep_ctrl;
-
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
- __func__, readl(®->in_endp[EP0_CON].diepctl));
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
- __func__, readl(®->out_endp[EP0_CON].doepctl));
-
- debug_cond(DEBUG_IN_EP,
- "%s : Prepare Complete Out packet.\n", __func__);
-
- writel(DOEPT_SIZ_PKT_CNT(1) | sizeof(struct usb_ctrlrequest),
- ®->out_endp[EP0_CON].doeptsiz);
- writel(usb_ctrl_dma_addr, ®->out_endp[EP0_CON].doepdma);
-
- ep_ctrl = readl(®->out_endp[EP0_CON].doepctl);
- writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
- ®->out_endp[EP0_CON].doepctl);
-
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DIEPCTL0 = 0x%x\n",
- __func__, readl(®->in_endp[EP0_CON].diepctl));
- debug_cond(DEBUG_EP0 != 0, "%s:EP0 ZLP DOEPCTL0 = 0x%x\n",
- __func__, readl(®->out_endp[EP0_CON].doepctl));
-
-}
-
-
-static int setdma_rx(struct dwc2_ep *ep, struct dwc2_request *req)
-{
- u32 *buf, ctrl;
- u32 length, pktcnt;
- u32 ep_num = ep_index(ep);
-
- buf = req->req.buf + req->req.actual;
- length = min_t(u32, req->req.length - req->req.actual,
- ep_num ? DMA_BUFFER_SIZE : ep->ep.maxpacket);
-
- ep->len = length;
- ep->dma_buf = buf;
-
- if (ep_num == EP0_CON || length == 0)
- pktcnt = 1;
- else
- pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;
-
- ctrl = readl(®->out_endp[ep_num].doepctl);
-
- writel((unsigned int) ep->dma_buf, ®->out_endp[ep_num].doepdma);
- writel(DOEPT_SIZ_PKT_CNT(pktcnt) | DOEPT_SIZ_XFER_SIZE(length),
- ®->out_endp[ep_num].doeptsiz);
- writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, ®->out_endp[ep_num].doepctl);
-
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: EP%d RX DMA start : DOEPDMA = 0x%x,"
- "DOEPTSIZ = 0x%x, DOEPCTL = 0x%x\n"
- "\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
- __func__, ep_num,
- readl(®->out_endp[ep_num].doepdma),
- readl(®->out_endp[ep_num].doeptsiz),
- readl(®->out_endp[ep_num].doepctl),
- buf, pktcnt, length);
- return 0;
-
-}
-
-static int setdma_tx(struct dwc2_ep *ep, struct dwc2_request *req)
-{
- u32 *buf, ctrl = 0;
- u32 length, pktcnt;
- u32 ep_num = ep_index(ep);
-
- buf = req->req.buf + req->req.actual;
- length = req->req.length - req->req.actual;
-
- if (ep_num == EP0_CON)
- length = min(length, (u32)ep_maxpacket(ep));
-
- ep->len = length;
- ep->dma_buf = buf;
-
- flush_dcache_range((unsigned long) ep->dma_buf,
- (unsigned long) ep->dma_buf +
- ROUND(ep->len, CONFIG_SYS_CACHELINE_SIZE));
-
- if (length == 0)
- pktcnt = 1;
- else
- pktcnt = (length - 1)/(ep->ep.maxpacket) + 1;
-
- /* Flush the endpoint's Tx FIFO */
- writel(TX_FIFO_NUMBER(ep->fifo_num), ®->grstctl);
- writel(TX_FIFO_NUMBER(ep->fifo_num) | TX_FIFO_FLUSH, ®->grstctl);
- while (readl(®->grstctl) & TX_FIFO_FLUSH)
- ;
-
- writel((unsigned long) ep->dma_buf, ®->in_endp[ep_num].diepdma);
- writel(DIEPT_SIZ_PKT_CNT(pktcnt) | DIEPT_SIZ_XFER_SIZE(length),
- ®->in_endp[ep_num].dieptsiz);
-
- ctrl = readl(®->in_endp[ep_num].diepctl);
-
- /* Write the FIFO number to be used for this endpoint */
- ctrl &= DIEPCTL_TX_FIFO_NUM_MASK;
- ctrl |= DIEPCTL_TX_FIFO_NUM(ep->fifo_num);
-
- /* Clear reserved (Next EP) bits */
- ctrl = (ctrl&~(EP_MASK<<DEPCTL_NEXT_EP_BIT));
-
- writel(DEPCTL_EPENA|DEPCTL_CNAK|ctrl, ®->in_endp[ep_num].diepctl);
-
- debug_cond(DEBUG_IN_EP,
- "%s:EP%d TX DMA start : DIEPDMA0 = 0x%x,"
- "DIEPTSIZ0 = 0x%x, DIEPCTL0 = 0x%x\n"
- "\tbuf = 0x%p, pktcnt = %d, xfersize = %d\n",
- __func__, ep_num,
- readl(®->in_endp[ep_num].diepdma),
- readl(®->in_endp[ep_num].dieptsiz),
- readl(®->in_endp[ep_num].diepctl),
- buf, pktcnt, length);
-
- return length;
-}
-
-static void complete_rx(struct dwc2_udc *dev, u8 ep_num)
-{
- struct dwc2_ep *ep = &dev->ep[ep_num];
- struct dwc2_request *req = NULL;
- u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
-
- if (list_empty(&ep->queue)) {
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: RX DMA done : NULL REQ on OUT EP-%d\n",
- __func__, ep_num);
- return;
-
- }
-
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
- ep_tsr = readl(®->out_endp[ep_num].doeptsiz);
-
- if (ep_num == EP0_CON)
- xfer_size = (ep_tsr & DOEPT_SIZ_XFER_SIZE_MAX_EP0);
- else
- xfer_size = (ep_tsr & DOEPT_SIZ_XFER_SIZE_MAX_EP);
-
- xfer_size = ep->len - xfer_size;
-
- /*
- * NOTE:
- *
- * Please be careful with proper buffer allocation for USB request,
- * which needs to be aligned to CONFIG_SYS_CACHELINE_SIZE, not only
- * with starting address, but also its size shall be a cache line
- * multiplication.
- *
- * This will prevent from corruption of data allocated immediatelly
- * before or after the buffer.
- *
- * For armv7, the cache_v7.c provides proper code to emit "ERROR"
- * message to warn users.
- */
- invalidate_dcache_range((unsigned long) ep->dma_buf,
- (unsigned long) ep->dma_buf +
- ROUND(xfer_size, CONFIG_SYS_CACHELINE_SIZE));
-
- req->req.actual += min(xfer_size, req->req.length - req->req.actual);
- is_short = (xfer_size < ep->ep.maxpacket);
-
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: RX DMA done : ep = %d, rx bytes = %d/%d, "
- "is_short = %d, DOEPTSIZ = 0x%x, remained bytes = %d\n",
- __func__, ep_num, req->req.actual, req->req.length,
- is_short, ep_tsr, xfer_size);
-
- if (is_short || req->req.actual == req->req.length) {
- if (ep_num == EP0_CON && dev->ep0state == DATA_STATE_RECV) {
- debug_cond(DEBUG_OUT_EP != 0, " => Send ZLP\n");
- dwc2_udc_ep0_zlp(dev);
- /* packet will be completed in complete_tx() */
- dev->ep0state = WAIT_FOR_IN_COMPLETE;
- } else {
- done(ep, req, 0);
-
- if (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next,
- struct dwc2_request, queue);
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: Next Rx request start...\n",
- __func__);
- setdma_rx(ep, req);
- }
- }
- } else
- setdma_rx(ep, req);
-}
-
-static void complete_tx(struct dwc2_udc *dev, u8 ep_num)
-{
- struct dwc2_ep *ep = &dev->ep[ep_num];
- struct dwc2_request *req;
- u32 ep_tsr = 0, xfer_size = 0, is_short = 0;
- u32 last;
-
- if (dev->ep0state == WAIT_FOR_NULL_COMPLETE) {
- dev->ep0state = WAIT_FOR_OUT_COMPLETE;
- dwc2_ep0_complete_out();
- return;
- }
-
- if (list_empty(&ep->queue)) {
- debug_cond(DEBUG_IN_EP,
- "%s: TX DMA done : NULL REQ on IN EP-%d\n",
- __func__, ep_num);
- return;
-
- }
-
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
-
- ep_tsr = readl(®->in_endp[ep_num].dieptsiz);
-
- xfer_size = ep->len;
- is_short = (xfer_size < ep->ep.maxpacket);
- req->req.actual += min(xfer_size, req->req.length - req->req.actual);
-
- debug_cond(DEBUG_IN_EP,
- "%s: TX DMA done : ep = %d, tx bytes = %d/%d, "
- "is_short = %d, DIEPTSIZ = 0x%x, remained bytes = %d\n",
- __func__, ep_num, req->req.actual, req->req.length,
- is_short, ep_tsr, xfer_size);
-
- if (ep_num == 0) {
- if (dev->ep0state == DATA_STATE_XMIT) {
- debug_cond(DEBUG_IN_EP,
- "%s: ep_num = %d, ep0stat =="
- "DATA_STATE_XMIT\n",
- __func__, ep_num);
- last = write_fifo_ep0(ep, req);
- if (last)
- dev->ep0state = WAIT_FOR_COMPLETE;
- } else if (dev->ep0state == WAIT_FOR_IN_COMPLETE) {
- debug_cond(DEBUG_IN_EP,
- "%s: ep_num = %d, completing request\n",
- __func__, ep_num);
- done(ep, req, 0);
- dev->ep0state = WAIT_FOR_SETUP;
- } else if (dev->ep0state == WAIT_FOR_COMPLETE) {
- debug_cond(DEBUG_IN_EP,
- "%s: ep_num = %d, completing request\n",
- __func__, ep_num);
- done(ep, req, 0);
- dev->ep0state = WAIT_FOR_OUT_COMPLETE;
- dwc2_ep0_complete_out();
- } else {
- debug_cond(DEBUG_IN_EP,
- "%s: ep_num = %d, invalid ep state\n",
- __func__, ep_num);
- }
- return;
- }
-
- if (req->req.actual == req->req.length)
- done(ep, req, 0);
-
- if (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
- debug_cond(DEBUG_IN_EP,
- "%s: Next Tx request start...\n", __func__);
- setdma_tx(ep, req);
- }
-}
-
-static inline void dwc2_udc_check_tx_queue(struct dwc2_udc *dev, u8 ep_num)
-{
- struct dwc2_ep *ep = &dev->ep[ep_num];
- struct dwc2_request *req;
-
- debug_cond(DEBUG_IN_EP,
- "%s: Check queue, ep_num = %d\n", __func__, ep_num);
-
- if (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
- debug_cond(DEBUG_IN_EP,
- "%s: Next Tx request(0x%p) start...\n",
- __func__, req);
-
- if (ep_is_in(ep))
- setdma_tx(ep, req);
- else
- setdma_rx(ep, req);
- } else {
- debug_cond(DEBUG_IN_EP,
- "%s: NULL REQ on IN EP-%d\n", __func__, ep_num);
-
- return;
- }
-
-}
-
-static void process_ep_in_intr(struct dwc2_udc *dev)
-{
- u32 ep_intr, ep_intr_status;
- u8 ep_num = 0;
-
- ep_intr = readl(®->daint);
- debug_cond(DEBUG_IN_EP,
- "*** %s: EP In interrupt : DAINT = 0x%x\n", __func__, ep_intr);
-
- ep_intr &= DAINT_MASK;
-
- while (ep_intr) {
- if (ep_intr & DAINT_IN_EP_INT(1)) {
- ep_intr_status = readl(®->in_endp[ep_num].diepint);
- debug_cond(DEBUG_IN_EP,
- "\tEP%d-IN : DIEPINT = 0x%x\n",
- ep_num, ep_intr_status);
-
- /* Interrupt Clear */
- writel(ep_intr_status, ®->in_endp[ep_num].diepint);
-
- if (ep_intr_status & TRANSFER_DONE) {
- complete_tx(dev, ep_num);
-
- if (ep_num == 0) {
- if (dev->ep0state ==
- WAIT_FOR_IN_COMPLETE)
- dev->ep0state = WAIT_FOR_SETUP;
-
- if (dev->ep0state == WAIT_FOR_SETUP)
- dwc2_udc_pre_setup();
-
- /* continue transfer after
- set_clear_halt for DMA mode */
- if (clear_feature_flag == 1) {
- dwc2_udc_check_tx_queue(dev,
- clear_feature_num);
- clear_feature_flag = 0;
- }
- }
- }
- }
- ep_num++;
- ep_intr >>= 1;
- }
-}
-
-static void process_ep_out_intr(struct dwc2_udc *dev)
-{
- u32 ep_intr, ep_intr_status;
- u8 ep_num = 0;
-
- ep_intr = readl(®->daint);
- debug_cond(DEBUG_OUT_EP != 0,
- "*** %s: EP OUT interrupt : DAINT = 0x%x\n",
- __func__, ep_intr);
-
- ep_intr = (ep_intr >> DAINT_OUT_BIT) & DAINT_MASK;
-
- while (ep_intr) {
- if (ep_intr & 0x1) {
- ep_intr_status = readl(®->out_endp[ep_num].doepint);
- debug_cond(DEBUG_OUT_EP != 0,
- "\tEP%d-OUT : DOEPINT = 0x%x\n",
- ep_num, ep_intr_status);
-
- /* Interrupt Clear */
- writel(ep_intr_status, ®->out_endp[ep_num].doepint);
-
- if (ep_num == 0) {
- if (ep_intr_status & TRANSFER_DONE) {
- if (dev->ep0state !=
- WAIT_FOR_OUT_COMPLETE)
- complete_rx(dev, ep_num);
- else {
- dev->ep0state = WAIT_FOR_SETUP;
- dwc2_udc_pre_setup();
- }
- }
-
- if (ep_intr_status &
- CTRL_OUT_EP_SETUP_PHASE_DONE) {
- debug_cond(DEBUG_OUT_EP != 0,
- "SETUP packet arrived\n");
- dwc2_handle_ep0(dev);
- }
- } else {
- if (ep_intr_status & TRANSFER_DONE)
- complete_rx(dev, ep_num);
- }
- }
- ep_num++;
- ep_intr >>= 1;
- }
-}
-
-/*
- * usb client interrupt handler.
- */
-static int dwc2_udc_irq(int irq, void *_dev)
-{
- struct dwc2_udc *dev = _dev;
- u32 intr_status;
- u32 usb_status, gintmsk;
- unsigned long flags = 0;
-
- spin_lock_irqsave(&dev->lock, flags);
-
- intr_status = readl(®->gintsts);
- gintmsk = readl(®->gintmsk);
-
- debug_cond(DEBUG_ISR,
- "\n*** %s : GINTSTS=0x%x(on state %s), GINTMSK : 0x%x,"
- "DAINT : 0x%x, DAINTMSK : 0x%x\n",
- __func__, intr_status, state_names[dev->ep0state], gintmsk,
- readl(®->daint), readl(®->daintmsk));
-
- if (!intr_status) {
- spin_unlock_irqrestore(&dev->lock, flags);
- return IRQ_HANDLED;
- }
-
- if (intr_status & INT_ENUMDONE) {
- debug_cond(DEBUG_ISR, "\tSpeed Detection interrupt\n");
-
- writel(INT_ENUMDONE, ®->gintsts);
- usb_status = (readl(®->dsts) & 0x6);
-
- if (usb_status & (USB_FULL_30_60MHZ | USB_FULL_48MHZ)) {
- debug_cond(DEBUG_ISR,
- "\t\tFull Speed Detection\n");
- set_max_pktsize(dev, USB_SPEED_FULL);
-
- } else {
- debug_cond(DEBUG_ISR,
- "\t\tHigh Speed Detection : 0x%x\n",
- usb_status);
- set_max_pktsize(dev, USB_SPEED_HIGH);
- }
- }
-
- if (intr_status & INT_EARLY_SUSPEND) {
- debug_cond(DEBUG_ISR, "\tEarly suspend interrupt\n");
- writel(INT_EARLY_SUSPEND, ®->gintsts);
- }
-
- if (intr_status & INT_SUSPEND) {
- usb_status = readl(®->dsts);
- debug_cond(DEBUG_ISR,
- "\tSuspend interrupt :(DSTS):0x%x\n", usb_status);
- writel(INT_SUSPEND, ®->gintsts);
-
- if (dev->gadget.speed != USB_SPEED_UNKNOWN
- && dev->driver) {
- if (dev->driver->suspend)
- dev->driver->suspend(&dev->gadget);
-
- /* HACK to let gadget detect disconnected state */
- if (dev->driver->disconnect) {
- spin_unlock_irqrestore(&dev->lock, flags);
- dev->driver->disconnect(&dev->gadget);
- spin_lock_irqsave(&dev->lock, flags);
- }
- }
- }
-
- if (intr_status & INT_RESUME) {
- debug_cond(DEBUG_ISR, "\tResume interrupt\n");
- writel(INT_RESUME, ®->gintsts);
-
- if (dev->gadget.speed != USB_SPEED_UNKNOWN
- && dev->driver
- && dev->driver->resume) {
-
- dev->driver->resume(&dev->gadget);
- }
- }
-
- if (intr_status & INT_RESET) {
- usb_status = readl(®->gotgctl);
- debug_cond(DEBUG_ISR,
- "\tReset interrupt - (GOTGCTL):0x%x\n", usb_status);
- writel(INT_RESET, ®->gintsts);
-
- if ((usb_status & 0xc0000) == (0x3 << 18)) {
- if (reset_available) {
- debug_cond(DEBUG_ISR,
- "\t\tOTG core got reset (%d)!!\n",
- reset_available);
- reconfig_usbd(dev);
- dev->ep0state = WAIT_FOR_SETUP;
- reset_available = 0;
- dwc2_udc_pre_setup();
- } else
- reset_available = 1;
-
- } else {
- reset_available = 1;
- debug_cond(DEBUG_ISR,
- "\t\tRESET handling skipped\n");
- }
- }
-
- if (intr_status & INT_IN_EP)
- process_ep_in_intr(dev);
-
- if (intr_status & INT_OUT_EP)
- process_ep_out_intr(dev);
-
- spin_unlock_irqrestore(&dev->lock, flags);
-
- return IRQ_HANDLED;
-}
-
-/** Queue one request
- * Kickstart transfer if needed
- */
-static int dwc2_queue(struct usb_ep *_ep, struct usb_request *_req,
- gfp_t gfp_flags)
-{
- struct dwc2_request *req;
- struct dwc2_ep *ep;
- struct dwc2_udc *dev;
- unsigned long flags = 0;
- u32 ep_num, gintsts;
-
- req = container_of(_req, struct dwc2_request, req);
- if (unlikely(!_req || !_req->complete || !_req->buf
- || !list_empty(&req->queue))) {
-
- debug("%s: bad params\n", __func__);
- return -EINVAL;
- }
-
- ep = container_of(_ep, struct dwc2_ep, ep);
-
- if (unlikely(!_ep || (!ep->desc && ep->ep.name != ep0name))) {
-
- debug("%s: bad ep: %s, %d, %p\n", __func__,
- ep->ep.name, !ep->desc, _ep);
- return -EINVAL;
- }
-
- ep_num = ep_index(ep);
- dev = ep->dev;
- if (unlikely(!dev->driver || dev->gadget.speed == USB_SPEED_UNKNOWN)) {
-
- debug("%s: bogus device state %p\n", __func__, dev->driver);
- return -ESHUTDOWN;
- }
-
- spin_lock_irqsave(&dev->lock, flags);
-
- _req->status = -EINPROGRESS;
- _req->actual = 0;
-
- /* kickstart this i/o queue? */
- debug("\n*** %s: %s-%s req = %p, len = %d, buf = %p"
- "Q empty = %d, stopped = %d\n",
- __func__, _ep->name, ep_is_in(ep) ? "in" : "out",
- _req, _req->length, _req->buf,
- list_empty(&ep->queue), ep->stopped);
-
-#ifdef DEBUG
- {
- int i, len = _req->length;
-
- printf("pkt = ");
- if (len > 64)
- len = 64;
- for (i = 0; i < len; i++) {
- printf("%02x", ((u8 *)_req->buf)[i]);
- if ((i & 7) == 7)
- printf(" ");
- }
- printf("\n");
- }
-#endif
-
- if (list_empty(&ep->queue) && !ep->stopped) {
-
- if (ep_num == 0) {
- /* EP0 */
- list_add_tail(&req->queue, &ep->queue);
- dwc2_ep0_kick(dev, ep);
- req = 0;
-
- } else if (ep_is_in(ep)) {
- gintsts = readl(®->gintsts);
- debug_cond(DEBUG_IN_EP,
- "%s: ep_is_in, S3C_UDC_OTG_GINTSTS=0x%x\n",
- __func__, gintsts);
-
- setdma_tx(ep, req);
- } else {
- gintsts = readl(®->gintsts);
- debug_cond(DEBUG_OUT_EP != 0,
- "%s:ep_is_out, S3C_UDC_OTG_GINTSTS=0x%x\n",
- __func__, gintsts);
-
- setdma_rx(ep, req);
- }
- }
-
- /* pio or dma irq handler advances the queue. */
- if (likely(req != 0))
- list_add_tail(&req->queue, &ep->queue);
-
- spin_unlock_irqrestore(&dev->lock, flags);
-
- return 0;
-}
-
-/****************************************************************/
-/* End Point 0 related functions */
-/****************************************************************/
-
-/* return: 0 = still running, 1 = completed, negative = errno */
-static int write_fifo_ep0(struct dwc2_ep *ep, struct dwc2_request *req)
-{
- u32 max;
- unsigned count;
- int is_last;
-
- max = ep_maxpacket(ep);
-
- debug_cond(DEBUG_EP0 != 0, "%s: max = %d\n", __func__, max);
-
- count = setdma_tx(ep, req);
-
- /* last packet is usually short (or a zlp) */
- if (likely(count != max))
- is_last = 1;
- else {
- if (likely(req->req.length != req->req.actual + count)
- || req->req.zero)
- is_last = 0;
- else
- is_last = 1;
- }
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: wrote %s %d bytes%s %d left %p\n", __func__,
- ep->ep.name, count,
- is_last ? "/L" : "",
- req->req.length - req->req.actual - count, req);
-
- /* requests complete when all IN data is in the FIFO */
- if (is_last) {
- ep->dev->ep0state = WAIT_FOR_SETUP;
- return 1;
- }
-
- return 0;
-}
-
-static int dwc2_fifo_read(struct dwc2_ep *ep, u32 *cp, int max)
-{
- invalidate_dcache_range((unsigned long)cp, (unsigned long)cp +
- ROUND(max, CONFIG_SYS_CACHELINE_SIZE));
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: bytes=%d, ep_index=%d 0x%p\n", __func__,
- max, ep_index(ep), cp);
-
- return max;
-}
-
-/**
- * udc_set_address - set the USB address for this device
- * @address:
- *
- * Called from control endpoint function
- * after it decodes a set address setup packet.
- */
-static void udc_set_address(struct dwc2_udc *dev, unsigned char address)
-{
- u32 ctrl = readl(®->dcfg);
- writel(DEVICE_ADDRESS(address) | ctrl, ®->dcfg);
-
- dwc2_udc_ep0_zlp(dev);
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: USB OTG 2.0 Device address=%d, DCFG=0x%x\n",
- __func__, address, readl(®->dcfg));
-
- dev->usb_address = address;
-}
-
-static inline void dwc2_udc_ep0_set_stall(struct dwc2_ep *ep)
-{
- struct dwc2_udc *dev;
- u32 ep_ctrl = 0;
-
- dev = ep->dev;
- ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
-
- /* set the disable and stall bits */
- if (ep_ctrl & DEPCTL_EPENA)
- ep_ctrl |= DEPCTL_EPDIS;
-
- ep_ctrl |= DEPCTL_STALL;
-
- writel(ep_ctrl, ®->in_endp[EP0_CON].diepctl);
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: set ep%d stall, DIEPCTL0 = 0x%p\n",
- __func__, ep_index(ep), ®->in_endp[EP0_CON].diepctl);
- /*
- * The application can only set this bit, and the core clears it,
- * when a SETUP token is received for this endpoint
- */
- dev->ep0state = WAIT_FOR_SETUP;
-
- dwc2_udc_pre_setup();
-}
-
-static void dwc2_ep0_read(struct dwc2_udc *dev)
-{
- struct dwc2_request *req;
- struct dwc2_ep *ep = &dev->ep[0];
-
- if (!list_empty(&ep->queue)) {
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
-
- } else {
- debug("%s: ---> BUG\n", __func__);
- BUG();
- return;
- }
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: req = %p, req.length = 0x%x, req.actual = 0x%x\n",
- __func__, req, req->req.length, req->req.actual);
-
- if (req->req.length == 0) {
- /* zlp for Set_configuration, Set_interface,
- * or Bulk-Only mass storge reset */
-
- ep->len = 0;
- dwc2_udc_ep0_zlp(dev);
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: req.length = 0, bRequest = %d\n",
- __func__, usb_ctrl->bRequest);
- return;
- }
-
- setdma_rx(ep, req);
-}
-
-/*
- * DATA_STATE_XMIT
- */
-static int dwc2_ep0_write(struct dwc2_udc *dev)
-{
- struct dwc2_request *req;
- struct dwc2_ep *ep = &dev->ep[0];
- int ret, need_zlp = 0;
-
- if (list_empty(&ep->queue))
- req = 0;
- else
- req = list_entry(ep->queue.next, struct dwc2_request, queue);
-
- if (!req) {
- debug_cond(DEBUG_EP0 != 0, "%s: NULL REQ\n", __func__);
- return 0;
- }
-
- debug_cond(DEBUG_EP0 != 0,
- "%s: req = %p, req.length = 0x%x, req.actual = 0x%x\n",
- __func__, req, req->req.length, req->req.actual);
-
- if (req->req.length - req->req.actual == ep0_fifo_size) {
- /* Next write will end with the packet size, */
- /* so we need Zero-length-packet */
- need_zlp = 1;
- }
-
- ret = write_fifo_ep0(ep, req);
-
- if ((ret == 1) && !need_zlp) {
- /* Last packet */
- dev->ep0state = WAIT_FOR_COMPLETE;
- debug_cond(DEBUG_EP0 != 0,
- "%s: finished, waiting for status\n", __func__);
-
- } else {
- dev->ep0state = DATA_STATE_XMIT;
- debug_cond(DEBUG_EP0 != 0,
- "%s: not finished\n", __func__);
- }
-
- return 1;
-}
-
-static int dwc2_udc_get_status(struct dwc2_udc *dev,
- struct usb_ctrlrequest *crq)
-{
- u8 ep_num = crq->wIndex & 0x7F;
- u16 g_status = 0;
- u32 ep_ctrl;
-
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_GET_STATUS\n", __func__);
- printf("crq->brequest:0x%x\n", crq->bRequestType & USB_RECIP_MASK);
- switch (crq->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_INTERFACE:
- g_status = 0;
- debug_cond(DEBUG_SETUP != 0,
- "\tGET_STATUS:USB_RECIP_INTERFACE, g_stauts = %d\n",
- g_status);
- break;
-
- case USB_RECIP_DEVICE:
- g_status = 0x1; /* Self powered */
- debug_cond(DEBUG_SETUP != 0,
- "\tGET_STATUS: USB_RECIP_DEVICE, g_stauts = %d\n",
- g_status);
- break;
-
- case USB_RECIP_ENDPOINT:
- if (crq->wLength > 2) {
- debug_cond(DEBUG_SETUP != 0,
- "\tGET_STATUS:Not support EP or wLength\n");
- return 1;
- }
-
- g_status = dev->ep[ep_num].stopped;
- debug_cond(DEBUG_SETUP != 0,
- "\tGET_STATUS: USB_RECIP_ENDPOINT, g_stauts = %d\n",
- g_status);
-
- break;
-
- default:
- return 1;
- }
-
- memcpy(usb_ctrl, &g_status, sizeof(g_status));
-
- flush_dcache_range((unsigned long) usb_ctrl,
- (unsigned long) usb_ctrl +
- ROUND(sizeof(g_status), CONFIG_SYS_CACHELINE_SIZE));
-
- writel(usb_ctrl_dma_addr, ®->in_endp[EP0_CON].diepdma);
- writel(DIEPT_SIZ_PKT_CNT(1) | DIEPT_SIZ_XFER_SIZE(2),
- ®->in_endp[EP0_CON].dieptsiz);
-
- ep_ctrl = readl(®->in_endp[EP0_CON].diepctl);
- writel(ep_ctrl|DEPCTL_EPENA|DEPCTL_CNAK,
- ®->in_endp[EP0_CON].diepctl);
- dev->ep0state = WAIT_FOR_NULL_COMPLETE;
-
- return 0;
-}
-
-static void dwc2_udc_set_nak(struct dwc2_ep *ep)
-{
- u8 ep_num;
- u32 ep_ctrl = 0;
-
- ep_num = ep_index(ep);
- debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
-
- if (ep_is_in(ep)) {
- ep_ctrl = readl(®->in_endp[ep_num].diepctl);
- ep_ctrl |= DEPCTL_SNAK;
- writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
- debug("%s: set NAK, DIEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
- } else {
- ep_ctrl = readl(®->out_endp[ep_num].doepctl);
- ep_ctrl |= DEPCTL_SNAK;
- writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
- debug("%s: set NAK, DOEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
- }
-
- return;
-}
-
-
-static void dwc2_udc_ep_set_stall(struct dwc2_ep *ep)
-{
- u8 ep_num;
- u32 ep_ctrl = 0;
-
- ep_num = ep_index(ep);
- debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
-
- if (ep_is_in(ep)) {
- ep_ctrl = readl(®->in_endp[ep_num].diepctl);
-
- /* set the disable and stall bits */
- if (ep_ctrl & DEPCTL_EPENA)
- ep_ctrl |= DEPCTL_EPDIS;
-
- ep_ctrl |= DEPCTL_STALL;
-
- writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
- debug("%s: set stall, DIEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
-
- } else {
- ep_ctrl = readl(®->out_endp[ep_num].doepctl);
-
- /* set the stall bit */
- ep_ctrl |= DEPCTL_STALL;
-
- writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
- debug("%s: set stall, DOEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
- }
-
- return;
-}
-
-static void dwc2_udc_ep_clear_stall(struct dwc2_ep *ep)
-{
- u8 ep_num;
- u32 ep_ctrl = 0;
-
- ep_num = ep_index(ep);
- debug("%s: ep_num = %d, ep_type = %d\n", __func__, ep_num, ep->ep_type);
-
- if (ep_is_in(ep)) {
- ep_ctrl = readl(®->in_endp[ep_num].diepctl);
-
- /* clear stall bit */
- ep_ctrl &= ~DEPCTL_STALL;
-
- /*
- * USB Spec 9.4.5: For endpoints using data toggle, regardless
- * of whether an endpoint has the Halt feature set, a
- * ClearFeature(ENDPOINT_HALT) request always results in the
- * data toggle being reinitialized to DATA0.
- */
- if (ep->bmAttributes == USB_ENDPOINT_XFER_INT
- || ep->bmAttributes == USB_ENDPOINT_XFER_BULK) {
- ep_ctrl |= DEPCTL_SETD0PID; /* DATA0 */
- }
-
- writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
- debug("%s: cleared stall, DIEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->in_endp[ep_num].diepctl));
-
- } else {
- ep_ctrl = readl(®->out_endp[ep_num].doepctl);
-
- /* clear stall bit */
- ep_ctrl &= ~DEPCTL_STALL;
-
- if (ep->bmAttributes == USB_ENDPOINT_XFER_INT
- || ep->bmAttributes == USB_ENDPOINT_XFER_BULK) {
- ep_ctrl |= DEPCTL_SETD0PID; /* DATA0 */
- }
-
- writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
- debug("%s: cleared stall, DOEPCTL%d = 0x%x\n",
- __func__, ep_num, readl(®->out_endp[ep_num].doepctl));
- }
-
- return;
-}
-
-static int dwc2_udc_set_halt(struct usb_ep *_ep, int value)
-{
- struct dwc2_ep *ep;
- struct dwc2_udc *dev;
- unsigned long flags = 0;
- u8 ep_num;
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- ep_num = ep_index(ep);
-
- if (unlikely(!_ep || !ep->desc || ep_num == EP0_CON ||
- ep->desc->bmAttributes == USB_ENDPOINT_XFER_ISOC)) {
- debug("%s: %s bad ep or descriptor\n", __func__, ep->ep.name);
- return -EINVAL;
- }
-
- /* Attempt to halt IN ep will fail if any transfer requests
- * are still queue */
- if (value && ep_is_in(ep) && !list_empty(&ep->queue)) {
- debug("%s: %s queue not empty, req = %p\n",
- __func__, ep->ep.name,
- list_entry(ep->queue.next, struct dwc2_request, queue));
-
- return -EAGAIN;
- }
-
- dev = ep->dev;
- debug("%s: ep_num = %d, value = %d\n", __func__, ep_num, value);
-
- spin_lock_irqsave(&dev->lock, flags);
-
- if (value == 0) {
- ep->stopped = 0;
- dwc2_udc_ep_clear_stall(ep);
- } else {
- if (ep_num == 0)
- dev->ep0state = WAIT_FOR_SETUP;
-
- ep->stopped = 1;
- dwc2_udc_ep_set_stall(ep);
- }
-
- spin_unlock_irqrestore(&dev->lock, flags);
-
- return 0;
-}
-
-static void dwc2_udc_ep_activate(struct dwc2_ep *ep)
-{
- u8 ep_num;
- u32 ep_ctrl = 0, daintmsk = 0;
-
- ep_num = ep_index(ep);
-
- /* Read DEPCTLn register */
- if (ep_is_in(ep)) {
- ep_ctrl = readl(®->in_endp[ep_num].diepctl);
- daintmsk = 1 << ep_num;
- } else {
- ep_ctrl = readl(®->out_endp[ep_num].doepctl);
- daintmsk = (1 << ep_num) << DAINT_OUT_BIT;
- }
-
- debug("%s: EPCTRL%d = 0x%x, ep_is_in = %d\n",
- __func__, ep_num, ep_ctrl, ep_is_in(ep));
-
- /* If the EP is already active don't change the EP Control
- * register. */
- if (!(ep_ctrl & DEPCTL_USBACTEP)) {
- ep_ctrl = (ep_ctrl & ~DEPCTL_TYPE_MASK) |
- (ep->bmAttributes << DEPCTL_TYPE_BIT);
- ep_ctrl = (ep_ctrl & ~DEPCTL_MPS_MASK) |
- (ep->ep.maxpacket << DEPCTL_MPS_BIT);
- ep_ctrl |= (DEPCTL_SETD0PID | DEPCTL_USBACTEP | DEPCTL_SNAK);
-
- if (ep_is_in(ep)) {
- writel(ep_ctrl, ®->in_endp[ep_num].diepctl);
- debug("%s: USB Ative EP%d, DIEPCTRL%d = 0x%x\n",
- __func__, ep_num, ep_num,
- readl(®->in_endp[ep_num].diepctl));
- } else {
- writel(ep_ctrl, ®->out_endp[ep_num].doepctl);
- debug("%s: USB Ative EP%d, DOEPCTRL%d = 0x%x\n",
- __func__, ep_num, ep_num,
- readl(®->out_endp[ep_num].doepctl));
- }
- }
-
- /* Unmask EP Interrtupt */
- writel(readl(®->daintmsk)|daintmsk, ®->daintmsk);
- debug("%s: DAINTMSK = 0x%x\n", __func__, readl(®->daintmsk));
-
-}
-
-static int dwc2_udc_clear_feature(struct usb_ep *_ep)
-{
- struct dwc2_udc *dev;
- struct dwc2_ep *ep;
- u8 ep_num;
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- ep_num = ep_index(ep);
-
- dev = ep->dev;
- debug_cond(DEBUG_SETUP != 0,
- "%s: ep_num = %d, is_in = %d, clear_feature_flag = %d\n",
- __func__, ep_num, ep_is_in(ep), clear_feature_flag);
-
- if (usb_ctrl->wLength != 0) {
- debug_cond(DEBUG_SETUP != 0,
- "\tCLEAR_FEATURE: wLength is not zero.....\n");
- return 1;
- }
-
- switch (usb_ctrl->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_DEVICE:
- switch (usb_ctrl->wValue) {
- case USB_DEVICE_REMOTE_WAKEUP:
- debug_cond(DEBUG_SETUP != 0,
- "\tOFF:USB_DEVICE_REMOTE_WAKEUP\n");
- break;
-
- case USB_DEVICE_TEST_MODE:
- debug_cond(DEBUG_SETUP != 0,
- "\tCLEAR_FEATURE: USB_DEVICE_TEST_MODE\n");
- /** @todo Add CLEAR_FEATURE for TEST modes. */
- break;
- }
-
- dwc2_udc_ep0_zlp(dev);
- break;
-
- case USB_RECIP_ENDPOINT:
- debug_cond(DEBUG_SETUP != 0,
- "\tCLEAR_FEATURE:USB_RECIP_ENDPOINT, wValue = %d\n",
- usb_ctrl->wValue);
-
- if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
- if (ep_num == 0) {
- dwc2_udc_ep0_set_stall(ep);
- return 0;
- }
-
- dwc2_udc_ep0_zlp(dev);
-
- dwc2_udc_ep_clear_stall(ep);
- dwc2_udc_ep_activate(ep);
- ep->stopped = 0;
-
- clear_feature_num = ep_num;
- clear_feature_flag = 1;
- }
- break;
- }
-
- return 0;
-}
-
-static int dwc2_udc_set_feature(struct usb_ep *_ep)
-{
- struct dwc2_udc *dev;
- struct dwc2_ep *ep;
- u8 ep_num;
-
- ep = container_of(_ep, struct dwc2_ep, ep);
- ep_num = ep_index(ep);
- dev = ep->dev;
-
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_SET_FEATURE , ep_num = %d\n",
- __func__, ep_num);
-
- if (usb_ctrl->wLength != 0) {
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE: wLength is not zero.....\n");
- return 1;
- }
-
- switch (usb_ctrl->bRequestType & USB_RECIP_MASK) {
- case USB_RECIP_DEVICE:
- switch (usb_ctrl->wValue) {
- case USB_DEVICE_REMOTE_WAKEUP:
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE:USB_DEVICE_REMOTE_WAKEUP\n");
- break;
- case USB_DEVICE_B_HNP_ENABLE:
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE: USB_DEVICE_B_HNP_ENABLE\n");
- break;
-
- case USB_DEVICE_A_HNP_SUPPORT:
- /* RH port supports HNP */
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE:USB_DEVICE_A_HNP_SUPPORT\n");
- break;
-
- case USB_DEVICE_A_ALT_HNP_SUPPORT:
- /* other RH port does */
- debug_cond(DEBUG_SETUP != 0,
- "\tSET: USB_DEVICE_A_ALT_HNP_SUPPORT\n");
- break;
- }
-
- dwc2_udc_ep0_zlp(dev);
- return 0;
-
- case USB_RECIP_INTERFACE:
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE: USB_RECIP_INTERFACE\n");
- break;
-
- case USB_RECIP_ENDPOINT:
- debug_cond(DEBUG_SETUP != 0,
- "\tSET_FEATURE: USB_RECIP_ENDPOINT\n");
- if (usb_ctrl->wValue == USB_ENDPOINT_HALT) {
- if (ep_num == 0) {
- dwc2_udc_ep0_set_stall(ep);
- return 0;
- }
- ep->stopped = 1;
- dwc2_udc_ep_set_stall(ep);
- }
-
- dwc2_udc_ep0_zlp(dev);
- return 0;
- }
-
- return 1;
-}
-
-/*
- * WAIT_FOR_SETUP (OUT_PKT_RDY)
- */
-static void dwc2_ep0_setup(struct dwc2_udc *dev)
-{
- struct dwc2_ep *ep = &dev->ep[0];
- int i;
- u8 ep_num;
-
- /* Nuke all previous transfers */
- nuke(ep, -EPROTO);
-
- /* read control req from fifo (8 bytes) */
- dwc2_fifo_read(ep, (u32 *)usb_ctrl, 8);
-
- debug_cond(DEBUG_SETUP != 0,
- "%s: bRequestType = 0x%x(%s), bRequest = 0x%x"
- "\twLength = 0x%x, wValue = 0x%x, wIndex= 0x%x\n",
- __func__, usb_ctrl->bRequestType,
- (usb_ctrl->bRequestType & USB_DIR_IN) ? "IN" : "OUT",
- usb_ctrl->bRequest,
- usb_ctrl->wLength, usb_ctrl->wValue, usb_ctrl->wIndex);
-
-#ifdef DEBUG
- {
- int i, len = sizeof(*usb_ctrl);
- char *p = (char *)usb_ctrl;
-
- printf("pkt = ");
- for (i = 0; i < len; i++) {
- printf("%02x", ((u8 *)p)[i]);
- if ((i & 7) == 7)
- printf(" ");
- }
- printf("\n");
- }
-#endif
-
- if (usb_ctrl->bRequest == GET_MAX_LUN_REQUEST &&
- usb_ctrl->wLength != 1) {
- debug_cond(DEBUG_SETUP != 0,
- "\t%s:GET_MAX_LUN_REQUEST:invalid",
- __func__);
- debug_cond(DEBUG_SETUP != 0,
- "wLength = %d, setup returned\n",
- usb_ctrl->wLength);
-
- dwc2_udc_ep0_set_stall(ep);
- dev->ep0state = WAIT_FOR_SETUP;
-
- return;
- } else if (usb_ctrl->bRequest == BOT_RESET_REQUEST &&
- usb_ctrl->wLength != 0) {
- /* Bulk-Only *mass storge reset of class-specific request */
- debug_cond(DEBUG_SETUP != 0,
- "%s:BOT Rest:invalid wLength =%d, setup returned\n",
- __func__, usb_ctrl->wLength);
-
- dwc2_udc_ep0_set_stall(ep);
- dev->ep0state = WAIT_FOR_SETUP;
-
- return;
- }
-
- /* Set direction of EP0 */
- if (likely(usb_ctrl->bRequestType & USB_DIR_IN)) {
- ep->bEndpointAddress |= USB_DIR_IN;
- } else {
- ep->bEndpointAddress &= ~USB_DIR_IN;
- }
- /* cope with automagic for some standard requests. */
- dev->req_std = (usb_ctrl->bRequestType & USB_TYPE_MASK)
- == USB_TYPE_STANDARD;
-
- dev->req_pending = 1;
-
- /* Handle some SETUP packets ourselves */
- if (dev->req_std) {
- switch (usb_ctrl->bRequest) {
- case USB_REQ_SET_ADDRESS:
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_SET_ADDRESS (%d)\n",
- __func__, usb_ctrl->wValue);
- if (usb_ctrl->bRequestType
- != (USB_TYPE_STANDARD | USB_RECIP_DEVICE))
- break;
-
- udc_set_address(dev, usb_ctrl->wValue);
- return;
-
- case USB_REQ_SET_CONFIGURATION:
- debug_cond(DEBUG_SETUP != 0,
- "=====================================\n");
- debug_cond(DEBUG_SETUP != 0,
- "%s: USB_REQ_SET_CONFIGURATION (%d)\n",
- __func__, usb_ctrl->wValue);
-
- if (usb_ctrl->bRequestType == USB_RECIP_DEVICE)
- reset_available = 1;
-
- break;
-
- case USB_REQ_GET_DESCRIPTOR:
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_GET_DESCRIPTOR\n",
- __func__);
- break;
-
- case USB_REQ_SET_INTERFACE:
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_SET_INTERFACE (%d)\n",
- __func__, usb_ctrl->wValue);
-
- if (usb_ctrl->bRequestType == USB_RECIP_INTERFACE)
- reset_available = 1;
-
- break;
-
- case USB_REQ_GET_CONFIGURATION:
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** USB_REQ_GET_CONFIGURATION\n",
- __func__);
- break;
-
- case USB_REQ_GET_STATUS:
- if (!dwc2_udc_get_status(dev, usb_ctrl))
- return;
-
- break;
-
- case USB_REQ_CLEAR_FEATURE:
- ep_num = usb_ctrl->wIndex & 0x7f;
-
- if (!dwc2_udc_clear_feature(&dev->ep[ep_num].ep))
- return;
-
- break;
-
- case USB_REQ_SET_FEATURE:
- ep_num = usb_ctrl->wIndex & 0x7f;
-
- if (!dwc2_udc_set_feature(&dev->ep[ep_num].ep))
- return;
-
- break;
-
- default:
- debug_cond(DEBUG_SETUP != 0,
- "%s: *** Default of usb_ctrl->bRequest=0x%x"
- "happened.\n", __func__, usb_ctrl->bRequest);
- break;
- }
- }
-
-
- if (likely(dev->driver)) {
- /* device-2-host (IN) or no data setup command,
- * process immediately */
- debug_cond(DEBUG_SETUP != 0,
- "%s:usb_ctrlreq will be passed to fsg_setup()\n",
- __func__);
-
- spin_unlock(&dev->lock);
- i = dev->driver->setup(&dev->gadget, usb_ctrl);
- spin_lock(&dev->lock);
-
- if (i < 0) {
- /* setup processing failed, force stall */
- dwc2_udc_ep0_set_stall(ep);
- dev->ep0state = WAIT_FOR_SETUP;
-
- debug_cond(DEBUG_SETUP != 0,
- "\tdev->driver->setup failed (%d),"
- " bRequest = %d\n",
- i, usb_ctrl->bRequest);
-
-
- } else if (dev->req_pending) {
- dev->req_pending = 0;
- debug_cond(DEBUG_SETUP != 0,
- "\tdev->req_pending...\n");
- }
-
- debug_cond(DEBUG_SETUP != 0,
- "\tep0state = %s\n", state_names[dev->ep0state]);
-
- }
-}
-
-/*
- * handle ep0 interrupt
- */
-static void dwc2_handle_ep0(struct dwc2_udc *dev)
-{
- if (dev->ep0state == WAIT_FOR_SETUP) {
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: WAIT_FOR_SETUP\n", __func__);
- dwc2_ep0_setup(dev);
-
- } else {
- debug_cond(DEBUG_OUT_EP != 0,
- "%s: strange state!!(state = %s)\n",
- __func__, state_names[dev->ep0state]);
- }
-}
-
-static void dwc2_ep0_kick(struct dwc2_udc *dev, struct dwc2_ep *ep)
-{
- debug_cond(DEBUG_EP0 != 0,
- "%s: ep_is_in = %d\n", __func__, ep_is_in(ep));
- if (ep_is_in(ep)) {
- dev->ep0state = DATA_STATE_XMIT;
- dwc2_ep0_write(dev);
-
- } else {
- dev->ep0state = DATA_STATE_RECV;
- dwc2_ep0_read(dev);
- }
-}
projects / oweals / u-boot.git / commitdiff