[alsa-devel] fsl_ssi: Cannot do simultaneous capture and playback

[Nicolin Chen]

On Sun, Sep 22, 2013 at 11:56:17PM -0300, Fabio Estevam wrote:
> Hi Nicolin,
> 
> On Sun, Sep 22, 2013 at 11:13 PM, Nicolin Chen <b42378 at freescale.com> wrote:
> 
> > In freescale internal branch, I had a patch to drop this part of code because
> > the hw_params() in fsl_ssi.c is already considering about the wl configuration,
> > so it won't change the wl value even if two streams' sample bits are different.
> >
> > But if we think about the benefit of snd_pcm_hw_constraint() for a case like
> > "(arecord -d10 xx.wav &);sleep 1;aplay yy.wav", yea the non-simultaneous case,
> > we might also just turn the dev_err() into dev_warn() from my point of view:
> >
> >                         if (first_runtime->sample_bits)
> >                                 snd_pcm_hw_constraint_minmax(substream->runtime,
> >                                         SNDRV_PCM_HW_PARAM_SAMPLE_BITS,
> >                                         first_runtime->sample_bits,
> >                                         first_runtime->sample_bits);
> >                         else
> >                                 dev_warn(substream->pcm->card->dev,
> >                                         "Not enforcing sample bits due to race\n");
> >
> > You can try this two solutions and find a better one.
> 
> Yes, tried both and none of them worked for me.
> 
> Could you try linux-next if you have a chance?

I want to, but I don't have a wandboard. Could you please give me the new
printed log? I think after the modification there should be little different
for the case.

> 
> Thanks,
> 
> Fabio Estevam
>