BT_SCO_STATE_IDLE
mtk_btcvsd_snd_set_state(btcvsd, btcvsd->tx, BT_SCO_STATE_IDLE);
mtk_btcvsd_snd_set_state(btcvsd, btcvsd->rx, BT_SCO_STATE_IDLE);
if (bt->tx->state == BT_SCO_STATE_IDLE &&
bt->rx->state == BT_SCO_STATE_IDLE) {
mtk_btcvsd_snd_set_state(bt, bt_stream, BT_SCO_STATE_IDLE);