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

Hi Nicolin,

On Sun, Sep 22, 2013 at 11:13 PM, Nicolin Chen b42378@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?

Thanks,

Fabio Estevam