1 files changed, 193 insertions, 0 deletions
diff --git a/target/linux/realtek/files/drivers/usb/host_uWiFi/ehci-dwc.c b/target/linux/realtek/files/drivers/usb/host_uWiFi/ehci-dwc.c
new file mode 100644
index 000000000..a45c34802
--- /dev/null
+++ b/target/linux/realtek/files/drivers/usb/host_uWiFi/ehci-dwc.c
@@ -0,0 +1,193 @@
+/*
+ * Realtek Semiconductor Corp.
+ *
+ * ehci-dwc.c: DWC USB host controller
+ *
+ * Tony Wu (tonywu@realtek.com)
+ * Jan. 10, 2009
+ */
+
+#include <linux/platform_device.h>
+
+#define EHCI_DWC_NAME  "dwc_ehci"
+
+/* called during probe() after chip reset completes */
+static int
+ehci_dwc_setup (struct usb_hcd *hcd)
+{
+  struct ehci_hcd *ehci = hcd_to_ehci (hcd);
+  int retval = 0;
+
+  retval = ehci_halt (ehci);
+  if (retval)
+    return retval;
+
+  /* data structure init */
+  retval = ehci_init (hcd);
+  if (retval)
+    return retval;
+
+  if (ehci_is_TDI (ehci))
+    ehci_reset (ehci);
+
+#ifdef	CONFIG_USB_SUSPEND
+  /* REVISIT: the controller works fine for wakeup iff the root hub
+   * itself is "globally" suspended, but usbcore currently doesn't
+   * understand such things.
+   *
+   * System suspend currently expects to be able to suspend the entire
+   * device tree, device-at-a-time.  If we failed selective suspend
+   * reports, system suspend would fail; so the root hub code must claim
+   * success.  That's lying to usbcore, and it matters for for runtime
+   * PM scenarios with selective suspend and remote wakeup...
+   */
+  if (ehci->no_selective_suspend && device_can_wakeup (&pdev->dev))
+    ehci_warn (ehci, "selective suspend/wakeup unavailable\n");
+#endif
+
+  ehci_port_power(ehci, 0);
+  return retval;
+}
+
+struct hc_driver ehci_dwc_hc_driver = {
+  .description = hcd_name,
+  .product_desc = "EHCI Host Controller",
+  .hcd_priv_size = sizeof (struct ehci_hcd),
+  /*
+   * generic hardware linkage
+   */
+  .irq = ehci_irq,
+  .flags = HCD_MEMORY | HCD_USB2,
+
+  /*
+   * basic lifecycle operations
+   */
+  .reset = ehci_dwc_setup,
+  .start = ehci_run,
+  .stop = ehci_stop,
+  .shutdown = ehci_shutdown,
+
+  /*
+   * managing i/o requests and associated device resources
+   */
+  .urb_enqueue = ehci_urb_enqueue,
+  .urb_dequeue = ehci_urb_dequeue,
+  .endpoint_disable = ehci_endpoint_disable,
+
+  /*
+   * scheduling support
+   */
+  .get_frame_number = ehci_get_frame,
+
+  /*
+   * root hub support
+   */
+  .hub_status_data = ehci_hub_status_data,
+  .hub_control = ehci_hub_control,
+
+#ifdef CONFIG_PM
+  .bus_suspend = ehci_bus_suspend,
+  .bus_resume = ehci_bus_resume,
+#endif
+
+  .relinquish_port    = ehci_relinquish_port,
+  .port_handed_over   = ehci_port_handed_over,
+};
+
+int
+ehci_dwc_drv_probe (struct platform_device *pdev)
+{
+  struct hc_driver *phcd;
+  struct usb_hcd *hcd;
+  struct ehci_hcd *ehci;
+  struct resource *res;
+  int retval;
+  u32 dwc_usb_irq; 
+
+  phcd = &ehci_dwc_hc_driver;
+
+  res = platform_get_resource (pdev, IORESOURCE_IRQ, 0);
+  if (res == NULL)
+    {
+      printk (KERN_ERR __FILE__ ": get irq resource failed!\n");
+      retval = -ENOMEM;
+      return retval;
+    }
+
+  dwc_usb_irq = res->start;
+
+  hcd = usb_create_hcd (phcd, &pdev->dev, dev_name(&pdev->dev));
+  if (hcd == NULL)
+    {
+      retval = -ENOMEM;
+      return retval;
+    }
+
+  res = platform_get_resource (pdev, IORESOURCE_MEM, 0);
+  if (res == NULL)
+    {
+      printk (KERN_ERR __FILE__ ": get memory resource failed!\n");
+      retval = -ENOMEM;
+      return retval;
+    }
+
+  hcd->rsrc_start = res->start;
+  hcd->rsrc_len = res->end - res->start + 1;
+  if (request_mem_region (hcd->rsrc_start, hcd->rsrc_len, EHCI_DWC_NAME) == NULL)
+    {
+      printk (KERN_ERR __FILE__ ": request_mem_region failed\n");
+      retval = -ENOMEM; 
+      return retval;
+    }
+
+  hcd->regs = (void *) ioremap(hcd->rsrc_start, hcd->rsrc_len);
+  if (!hcd->regs)
+    { 
+      printk(KERN_ERR __FILE__ ": ioremap failed\n");
+      release_mem_region (hcd->rsrc_start, hcd->rsrc_len);
+      retval = -ENOMEM; 
+      return retval;
+    }
+
+  ehci = hcd_to_ehci (hcd);
+  ehci->caps = hcd->regs;
+  ehci->regs = hcd->regs + HC_LENGTH (readl (&ehci->caps->hc_capbase));
+  ehci->hcs_params = readl (&ehci->caps->hcs_params);
+
+  retval = usb_add_hcd (hcd, dwc_usb_irq, IRQF_SHARED);
+  if (retval != 0)
+    {
+      release_mem_region (hcd->rsrc_start, hcd->rsrc_len);
+      iounmap(hcd->regs);
+    }
+
+  return retval;
+}
+
+static int
+ehci_dwc_drv_remove (struct platform_device *pdev)
+{
+  struct usb_hcd *hcd;
+
+  hcd = platform_get_drvdata (pdev);
+  usb_remove_hcd (hcd);
+  if (hcd->driver->flags & HCD_MEMORY)
+    {
+      iounmap (hcd->regs);
+      release_mem_region (hcd->rsrc_start, hcd->rsrc_len);
+    }
+  else
+    release_region (hcd->rsrc_start, hcd->rsrc_len);
+
+  usb_put_hcd (hcd);
+  return 0;
+}
+
+struct platform_driver ehci_dwc_driver = {
+  .probe = ehci_dwc_drv_probe,
+  .remove = ehci_dwc_drv_remove,
+  .shutdown = usb_hcd_platform_shutdown,
+  .driver = {
+    .name = "dwc_ehci",
+  },
+};