diff --git a/include/hardware/bt_hl.h b/include/hardware/bt_hl.h
new file mode 100644
index 0000000..bd29e3a
--- /dev/null
+++ b/include/hardware/bt_hl.h
@@ -0,0 +1,123 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ANDROID_INCLUDE_BT_HL_H
+#define ANDROID_INCLUDE_BT_HL_H
+
+__BEGIN_DECLS
+
+/* HL connection states */
+
+typedef enum
+{
+    BTHL_MDEP_ROLE_SOURCE,
+    BTHL_MDEP_ROLE_SINK
+} bthl_mdep_role_t;
+
+typedef enum {
+    BTHL_APP_REG_STATE_REG_SUCCESS,
+    BTHL_APP_REG_STATE_REG_FAILED,
+    BTHL_APP_REG_STATE_DEREG_SUCCESS,
+    BTHL_APP_REG_STATE_DEREG_FAILED
+} bthl_app_reg_state_t;
+
+typedef enum
+{
+    BTHL_CHANNEL_TYPE_RELIABLE,
+    BTHL_CHANNEL_TYPE_STREAMING,
+    BTHL_CHANNEL_TYPE_ANY
+} bthl_channel_type_t;
+
+
+/* HL connection states */
+typedef enum {
+    BTHL_CONN_STATE_CONNECTING,
+    BTHL_CONN_STATE_CONNECTED,
+    BTHL_CONN_STATE_DISCONNECTING,
+    BTHL_CONN_STATE_DISCONNECTED,
+    BTHL_CONN_STATE_DESTROYED
+} bthl_channel_state_t;
+
+typedef struct
+{
+    bthl_mdep_role_t        mdep_role;
+    int                     data_type;
+    bthl_channel_type_t     channel_type;
+    const char                   *mdep_description; /* MDEP description to be used in the SDP (optional); null terminated */
+} bthl_mdep_cfg_t;
+
+typedef struct
+{
+    const char      *application_name;
+    const char      *provider_name;   /* provider name to be used in the SDP (optional); null terminated */
+    const char      *srv_name;        /* service name to be used in the SDP (optional); null terminated*/
+    const char      *srv_desp;        /* service description to be used in the SDP (optional); null terminated */
+    int             number_of_mdeps;
+    bthl_mdep_cfg_t *mdep_cfg;  /* Dynamic array */
+} bthl_reg_param_t;
+
+/** Callback for application registration status.
+ *  state will have one of the values from  bthl_app_reg_state_t
+ */
+typedef void (* bthl_app_reg_state_callback)(int app_id, bthl_app_reg_state_t state);
+
+/** Callback for channel connection state change.
+ *  state will have one of the values from
+ *  bthl_connection_state_t and fd (file descriptor)
+ */
+typedef void (* bthl_channel_state_callback)(int app_id, bt_bdaddr_t *bd_addr, int mdep_cfg_index, int channel_id, bthl_channel_state_t state, int fd);
+
+/** BT-HL callback structure. */
+typedef struct {
+    /** set to sizeof(bthl_callbacks_t) */
+    size_t      size;
+    bthl_app_reg_state_callback     app_reg_state_cb;
+    bthl_channel_state_callback     channel_state_cb;
+} bthl_callbacks_t;
+
+
+/** Represents the standard BT-HL interface. */
+typedef struct {
+
+    /** set to sizeof(bthl_interface_t)  */
+    size_t          size;
+
+    /**
+     * Register the Bthl callbacks
+     */
+    bt_status_t (*init)( bthl_callbacks_t* callbacks );
+
+    /** Register HL application */
+    bt_status_t (*register_application) ( bthl_reg_param_t *p_reg_param, int *app_id);
+
+    /** Unregister HL application */
+    bt_status_t (*unregister_application) (int app_id);
+
+    /** connect channel */
+    bt_status_t (*connect_channel)(int app_id, bt_bdaddr_t *bd_addr, int mdep_cfg_index, int *channel_id);
+
+    /** destroy channel */
+    bt_status_t (*destroy_channel)(int channel_id);
+
+    /** Close the  Bthl callback **/
+    void (*cleanup)(void);
+
+} bthl_interface_t;
+__END_DECLS
+
+#endif /* ANDROID_INCLUDE_BT_HL_H */
+
+