feat(ble_audio): Support Zephyr LE Audio v4.4.1

components/bt/esp_ble_iso/include/subsys/bluetooth/host/conn_internal.h

@@ -29,7 +29,7 @@ typedef enum __packed {
 struct bt_conn_le {
     bt_addr_le_t dst;
 
-    uint16_t interval;
+    uint32_t interval_us;
 
     /** @brief Remote LE features
      *
@@ -114,5 +114,7 @@ bool bt_conn_is_peer_addr_le(const struct bt_conn *conn, uint8_t id,
  */
 #define BT_CONN_INDEX_INVALID 0xff
 
+struct bt_conn *bt_conn_lookup_index(uint8_t index);
+
 /* Set connection object in certain state and perform action related to state */
 void bt_conn_set_state(struct bt_conn *conn, bt_conn_state_t state);

components/bt/esp_ble_iso/include/zephyr/bluetooth/conn.h

@@ -112,7 +112,7 @@ struct bt_conn_le_info {
      *  Address (RPA) before identity has been resolved.
      */
     const bt_addr_le_t *dst;
-    uint16_t interval; /**< Connection interval */
+    uint32_t interval_us; /**< Connection interval in microseconds */
 };
 
 /** @brief Convert connection interval to milliseconds

components/bt/esp_ble_iso/include/zephyr/bluetooth/iso.h

@@ -182,8 +182,6 @@ extern "C" {
 enum bt_iso_state {
     /** Channel disconnected */
     BT_ISO_STATE_DISCONNECTED,
-    /** Channel is pending ACL encryption before connecting */
-    BT_ISO_STATE_ENCRYPT_PENDING,
     /** Channel in connecting state */
     BT_ISO_STATE_CONNECTING,
     /** Channel ready for upper layer traffic on it */
@@ -213,17 +211,6 @@ struct bt_iso_chan {
     struct bt_iso_chan_qos *qos;
     /** Channel state */
     enum bt_iso_state state;
-    /**
-     * @brief The required security level of the channel
-     *
-     * This value can be set as the central before connecting a CIS
-     * with bt_iso_chan_connect().
-     * The value is overwritten to @ref bt_iso_server::sec_level for the
-     * peripheral once a channel has been accepted.
-     *
-     * Only available when @kconfig{CONFIG_BT_SMP} is enabled.
-     */
-    bt_security_t required_sec_level;
     /** @internal Node used internally by the stack */
     sys_snode_t node;
 };
@@ -783,13 +770,6 @@ struct bt_iso_accept_info {
 
 /** @brief ISO Server structure. */
 struct bt_iso_server {
-    /**
-     * @brief Required minimum security level.
-     *
-     * Only available when @kconfig{CONFIG_BT_SMP} is enabled.
-     */
-    bt_security_t sec_level;
-
     /**
      * @brief Server accept callback
      *