diff --git a/android/hal-msg.h b/android/hal-msg.h
index f381862..5faf852 100644
--- a/android/hal-msg.h
+++ b/android/hal-msg.h
@@ -442,6 +442,8 @@ struct hal_ev_hid_conn_state {
 	uint8_t state;
 } __attribute__((packed));
 
+#define HAL_HID_STATUS_OK		0x00
+
 #define HAL_EV_HID_INFO			0x82
 struct hal_ev_hid_info {
 	uint8_t bdaddr[6];
@@ -456,6 +458,13 @@ struct hal_ev_hid_info {
 	uint8_t descr[884];
 } __attribute__((packed));
 
+#define HAL_EV_HID_PROTO_MODE		0x83
+struct hal_ev_hid_proto_mode {
+	uint8_t bdaddr[6];
+	uint8_t status;
+	uint8_t mode;
+} __attribute__((packed));
+
 #define HAL_EV_AV_CONNECTION_STATE	0x81
 struct hal_ev_av_connection_state {
 	uint8_t state;