1 files changed, 7 insertions, 1 deletions

diff --git a/usb_extra.h b/usb_extra.h
index 499e6b2fb..202f3223b 100644
--- a/usb_extra.h
+++ b/usb_extra.h
@@ -10,11 +10,17 @@
 #define EXTRA_SIZE              2
 #define EXTRA_BUFFER            EP_DOUBLE_BUFFER
 
+// http://www.microsoft.com/whdc/archive/w2kbd.mspx
 #define AUDIO_VOL_UP            (1<<0)
 #define AUDIO_VOL_DOWN          (1<<1)
 #define AUDIO_MUTE              (1<<2)
 
+#define SYSTEM_POWER_DOWN       (1<<0)
+#define SYSTEM_SLEEP            (1<<1)
+#define SYSTEM_WAKE_UP          (1<<2)
 
-int8_t usb_extra_send(uint8_t bits);
+
+int8_t usb_extra_audio_send(uint8_t bits);
+int8_t usb_extra_system_send(uint8_t bits);
 
 #endif