/* Fill zeros to esai tx fifo to avoid noise data transfered. */
static int32_t esai_stuff_tx_fifo(audio_ctrl_p ctrl)
/* Fill zeros to esai tx fifo to avoid noise data transfered. */
static int32_t esai_stuff_tx_fifo(audio_ctrl_p ctrl)
{
    uint32_t i;
    uint32_t instance = ctrl->instance;
    UNUSED_VARIABLE(instance);
    for (i = 0; i < ESAI_TX_FIFO_SIZE; i++) {
        HW_ESAI_ETDR_WR(0);
    }
    return 0;
}