[Sound-open-firmware] [PATCH_V2] cnl: dma: fix playback failed at second time

[Keyon Jie]

On 2018年03月02日 13:49, Rander Wang wrote:
> Stop dma at the end of playback, or next time dma
> is not avialable for playback
> 
> ---
> V2: fix typo in comments
> 
> Signed-off-by: Rander Wang <rander.wang at intel.com>
> ---
>   src/drivers/dw-dma.c | 6 ++++++
>   1 file changed, 6 insertions(+)
> 
> diff --git a/src/drivers/dw-dma.c b/src/drivers/dw-dma.c
> index be19e12..15d608c 100644
> --- a/src/drivers/dw-dma.c
> +++ b/src/drivers/dw-dma.c
> @@ -1103,6 +1103,12 @@ static void dw_dma_irq_handler(void *data)
>   			p->chan[i].cb(p->chan[i].cb_data,
>   					DMA_IRQ_TYPE_BLOCK, &next);
>   		}
> +
> +		if (next.size == DMA_RELOAD_END) {
> +			trace_dma("LSo");
> +			/* disable channel, finished */
> +			dw_write(dma, DW_DMA_CHAN_EN, CHAN_DISABLE(i));
> +		}

Bingo, I forgot add this fix for CNL handler.

Thanks,
~Keyon

>   #endif
>   		/* end of a transfer */
>   		if ((status_tfr & mask) &&
>