Index: uspace/lib/usb/hid.h
===================================================================
--- uspace/lib/usb/hid.h	(revision 0e419571bdba43a9888b077d1994f873314353d3)
+++ uspace/lib/usb/hid.h	(revision fd17ab54f5dcc26877b5231b7d2a83ee9e5dd5f9)
@@ -47,4 +47,10 @@
 } usb_hid_request_t;
 
+/** USB/HID interface protocols. */
+typedef enum {
+	USB_HID_PROTOCOL_NONE = 0,
+	USB_HID_PROTOCOL_KEYBOARD = 1,
+	USB_HID_PROTOCOL_MOUSE = 2
+} usb_hid_protocol_t;
 
 #endif