On Wed, 01 Aug 2018 12:07:33 +0200,
Akshu Agrawal wrote:
>
> Take into account the base delay set in pointer callback.
>
> There are cases where a pointer function populates
> runtime->delay, such as:
> ./sound/pci/hda/hda_controller.c
> ./sound/soc/intel/atom/sst-mfld-platform-pcm.c
>
> This delay was getting lost and was overwritten by delays
> from codec or cpu dai delay function if exposed.
>
> Now,
> Total delay = base delay + cpu_dai delay + codec_dai delay
>
> Signed-off-by: Akshu Agrawal <akshu.agrawal@xxxxxxx>
Reviewed-by: Takashi Iwai <tiwai@xxxxxxx>
thanks,
Takashi
> ---
> sound/soc/soc-pcm.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
> index 98be04b..e8b98bfd 100644
> --- a/sound/soc/soc-pcm.c
> +++ b/sound/soc/soc-pcm.c
> @@ -1179,6 +1179,9 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
> snd_pcm_sframes_t codec_delay = 0;
> int i;
>
> + /* clearing the previous total delay */
> + runtime->delay = 0;
> +
> for_each_rtdcom(rtd, rtdcom) {
> component = rtdcom->component;
>
> @@ -1190,6 +1193,8 @@ static snd_pcm_uframes_t soc_pcm_pointer(struct snd_pcm_substream *substream)
> offset = component->driver->ops->pointer(substream);
> break;
> }
> + /* base delay if assigned in pointer callback */
> + delay = runtime->delay;
>
> if (cpu_dai->driver->ops->delay)
> delay += cpu_dai->driver->ops->delay(substream, cpu_dai);
> --
> 1.9.1
>
>
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