Merge pull request #95 from grissiom/vcom

usbdevice/core: add reset function to support hotplug

components/drivers/include/drivers/usb_device.h

@@ -145,6 +145,7 @@ enum udev_msg_type
     USB_MSG_SETUP_NOTIFY,
     USB_MSG_DATA_NOTIFY,
     USB_MSG_SOF,
+    USB_MSG_RESET,
 };
 typedef enum udev_msg_type udev_msg_type;
 

components/drivers/usb/usbdevice/core/core.c

@@ -666,6 +666,35 @@ rt_err_t _sof_notify(udevice_t device)
     return RT_EOK;
 }
 
+/**
+ * This function will reset all class.
+ *
+ * @param device the usb device object.
+ *
+ * @return RT_EOK.
+ */
+rt_err_t _reset_notify(udevice_t device)
+{
+    struct rt_list_node *i;
+    uclass_t cls;
+
+    RT_ASSERT(device != RT_NULL);
+
+    /* to notity every class that sof event comes */
+    for (i=device->curr_cfg->cls_list.next;
+            i!=&device->curr_cfg->cls_list; i=i->next)
+    {
+        cls = (uclass_t)rt_list_entry(i, struct uclass, list);
+        if(cls->ops->stop != RT_NULL)
+            cls->ops->stop(device, cls);
+
+        if(cls->ops->run != RT_NULL)
+            cls->ops->run(device, cls);
+    }
+
+    return RT_EOK;
+}
+
 /**
  * This function will create an usb device object.
  *
@@ -1382,6 +1411,10 @@ static void rt_usbd_thread_entry(void* parameter)
         case USB_MSG_SETUP_NOTIFY:
             _setup_request(device, (ureq_t)msg.content.setup_msg.packet);
             break;
+        case USB_MSG_RESET:
+            if (device->state == USB_STATE_ADDRESS)
+                _reset_notify(device);
+            break;
         default:
             rt_kprintf("unknown msg type\n");
             break;