diff --git a/include/linux/input.h b/include/linux/input.h
index 1be28cb..feaea76 100644
--- a/include/linux/input.h
+++ b/include/linux/input.h
@@ -643,6 +643,7 @@
 					 set = radio enabled */
 #define SW_RADIO		SW_RFKILL_ALL	/* deprecated */
 #define SW_MICROPHONE_INSERT	0x04  /* set = inserted */
+#define SW_DOCK			0x05  /* set = plugged into dock */
 #define SW_MAX			0x0f
 #define SW_CNT			(SW_MAX+1)