diff --git a/android/hal-ipc-api.txt b/android/hal-ipc-api.txt
index f2427e1..535e880 100644
--- a/android/hal-ipc-api.txt
+++ b/android/hal-ipc-api.txt
Valid attribute values: Same as in Get Element Attribute
+ Opcode 0x8a - Register Notification notification
+
+ Notification parameters: Event (1 octet)
+ Parameter (4 octets)
+
+ Valid event values: Same as in Register Notification
+
Bluetooth GATT HAL (ID 9)
=========================
diff --git a/android/hal-msg.h b/android/hal-msg.h
index 9bc2d2a..a7df71a 100644
--- a/android/hal-msg.h
+++ b/android/hal-msg.h
uint8_t number;
uint8_t attrs[0];
} __attribute__((packed));
+
+#define HAL_EV_AVRCP_REGISTER_NOTIFICATION 0x8a
+struct hal_ev_avrcp_register_notification {
+ uint8_t event;
+ uint32_t param;
+} __attribute__((packed));