[alsa-devel] [PATCH 2/2] ASoC: OMAP: reconfigure DMA to resume audio

[Mark Brown]

On Thu, Nov 12, 2009 at 02:15:18PM -0600, Jane Wang wrote:
> Reconfigure DMA transfer parameters to resume audio after system comming out of OFF state.

> Signed-off-by: Jane Wang <jwang at ti.com>

This looks OK to me but I'd like an ack from the OMAP folks.  Adding
Jarkko as well as he's the maintainer for OMAP audio.

> ---
>  sound/soc/omap/omap-pcm.c |    7 ++++++-
>  1 files changed, 6 insertions(+), 1 deletions(-)
> 
> diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
> index 6a829ee..5e04390 100644
> --- a/sound/soc/omap/omap-pcm.c
> +++ b/sound/soc/omap/omap-pcm.c
> @@ -215,8 +215,13 @@ static int omap_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
>  
>  	spin_lock_irqsave(&prtd->lock, flags);
>  	switch (cmd) {
> -	case SNDRV_PCM_TRIGGER_START:
>  	case SNDRV_PCM_TRIGGER_RESUME:
> +		/* Reconfigure DMA transfer parameters
> +		 * in order to come back from OFF mode
> +		 */
> +		omap_pcm_prepare(substream);
> +		/* fall through */
> +	case SNDRV_PCM_TRIGGER_START:
>  	case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
>  		prtd->period_index = 0;
>  		/* Configure McBSP internal buffer usage */
> -- 
> 1.5.4.3
>