On Mon, Dec 09, 2013 at 05:56:40PM +0000, Mark Brown wrote:
> On Fri, Dec 06, 2013 at 11:38:29PM +0800, Nicolin Chen wrote:
>
> > +static int imx_hifi_hw_free(struct snd_pcm_substream *substream)
> > +{
> > + struct snd_soc_pcm_runtime *rtd = substream->private_data;
> > + struct snd_soc_dai *codec_dai = rtd->codec_dai;
> > +
> > + /* Don't diable FLL if still having multiple substreams running */
> > + if (codec_dai->active != 1)
> > + return 0;
> > +
> > + return imx_wm8962_disable_fll(codec_dai);
>
> This will still disable the FLL if there's an analogue bypass path
> active. I'd suggest changing enable() and disable() to reference count.
I was expecting this would disable it for further reconfiguration. But it
seems I should also considerate the case using bypass path and normal PCM
playback simultaneously, which looks a bit complex.
>
> > + if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
> > + return imx_wm8962_enable_fll(codec_dai, 44100,
> > + SNDRV_PCM_FORMAT_S16_LE);
>
> It might be slightly nicer to keep the static variable for the frequency
> - that way if we start up due to set_bias_level() we'll keep the last
> rate played which might be more likely to avoid locking playbacks out.
> Very minor thing though, I wouldn't worry about it.
I'd like to follow this way.
Thank you,
Nicolin Chen
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