[alsa-devel] [ASoC]Changing the order of trigger in soc_pcm_trigger

[Nobin Mathew]

I feel i am wrong because as soon as controller is triggered it will
request for data from DMA.
 So this is my controller implementation problem.

On 6/6/07, Nobin Mathew <nobin.mathew at gmail.com> wrote:
> Liam,
>
> I have one suggestion.
>
> Can we use this
>
> if (rtd->codec_dai->ops.trigger) {
>                 ret = rtd->codec_dai->ops.trigger(substream, cmd);
>                 if (ret < 0)
>                         return ret;
>         }
>
> if (rtd->cpu_dai->ops.trigger) {
>         ret = rtd->cpu_dai->ops.trigger(substream, cmd);
>         if (ret < 0)
>                 return ret;
> }
> if (platform->pcm_ops->trigger) {
>         ret = platform->pcm_ops->trigger(substream, cmd);
>         if (ret < 0)
>                 return ret;
> }
>
> Instead of
>
> if (rtd->codec_dai->ops.trigger) {
>                 ret = rtd->codec_dai->ops.trigger(substream, cmd);
>                 if (ret < 0)
>                         return ret;
>         }
>
> if (platform->pcm_ops->trigger) {
>         ret = platform->pcm_ops->trigger(substream, cmd);
>         if (ret < 0)
>                 return ret;
> }
>
> if (rtd->cpu_dai->ops.trigger) {
>         ret = rtd->cpu_dai->ops.trigger(substream, cmd);
>         if (ret < 0)
>                 return ret;
> }
>
>
> That means trigger the Cpu before pcm. Because most of the controllers
> needs to be initialized and triggered before external DMA is
> triggered.
>
> Correct me if i am going wrong.
>
> This was causing so many problems in my hardware.
>
> Nobin Mathew
>