Changes in uspace/lib/usb/src/usb.c [820d9bc:05b59393] in mainline

File:

• uspace/lib/usb/src/usb.c (modified) (2 diffs)

uspace/lib/usb/src/usb.c

@@ -44 +44 @@
         [USB_SPEED_FULL] = "full",
         [USB_SPEED_HIGH] = "high",
-        [USB_SPEED_SUPER] = "super",
 };
 
@@ -119 +118 @@
 }
 
+/** Check setup packet data for signs of toggle reset.
+ *
+ * @param[in] requst Setup requst data.
+ *
+ * @retval -1 No endpoints need reset.
+ * @retval 0 All endpoints need reset.
+ * @retval >0 Specified endpoint needs reset.
+ *
+ */
+int usb_request_needs_toggle_reset(
+    const usb_device_request_setup_packet_t *request)
+{
+        assert(request);
+        switch (request->request)
+        {
+        /* Clear Feature ENPOINT_STALL */
+        case USB_DEVREQ_CLEAR_FEATURE: /*resets only cleared ep */
+                /* 0x2 ( HOST to device | STANDART | TO ENPOINT) */
+                if ((request->request_type == 0x2) &&
+                    (request->value == USB_FEATURE_ENDPOINT_HALT))
+                        return uint16_usb2host(request->index);
+                break;
+        case USB_DEVREQ_SET_CONFIGURATION:
+        case USB_DEVREQ_SET_INTERFACE:
+                /* Recipient must be device, this resets all endpoints,
+                 * In fact there should be no endpoints but EP 0 registered
+                 * as different interfaces use different endpoints,
+                 * unless you're changing configuration or alternative
+                 * interface of an already setup device. */
+                if (!(request->request_type & SETUP_REQUEST_TYPE_DEVICE_TO_HOST))
+                        return 0;
+                break;
+        default:
+                break;
+        }
+        return -1;
+}
+
 /**
  * @}