diff --git a/include/uapi/linux/input.h b/include/uapi/linux/input.h
index a3726275876dc509bfa99a01b8113385c1fb2d2f..7bacdb514377d28b2a77ec200bef2a8a27034fa9 100644
--- a/include/uapi/linux/input.h
+++ b/include/uapi/linux/input.h
@@ -719,6 +719,8 @@ struct input_keymap_entry {
 #define BTN_DPAD_LEFT		0x222
 #define BTN_DPAD_RIGHT		0x223
 
+#define KEY_ALS_TOGGLE		0x230	/* Ambient light sensor */
+
 #define BTN_TRIGGER_HAPPY		0x2c0
 #define BTN_TRIGGER_HAPPY1		0x2c0
 #define BTN_TRIGGER_HAPPY2		0x2c1