au1xxx_dbdma_start
EXPORT_SYMBOL(au1xxx_dbdma_start);
void au1xxx_dbdma_start(u32 chanid);
au1xxx_dbdma_start(channel);
au1xxx_dbdma_start(hw->dma_rx_ch);
au1xxx_dbdma_start(hw->dma_tx_ch);
au1xxx_dbdma_start(c);