[alsa-devel] Power management state flow in ALSA

[Liam Girdwood]

Nobin,

Can you try the following patch :-

http://opensource.wolfsonmicro.com/cgi-bin/gitweb/gitweb.cgi?p=linux-2.6-asoc;a=commit;h=6c868238a5e083dca4d74439a7fd467b5c7726b0

This will notify pcm's of their suspend state.

Liam

On Wed, 2007-05-30 at 12:58 +0200, Takashi Iwai wrote:
> At Wed, 30 May 2007 16:06:54 +0530,
> Nobin Mathew wrote:
> > 
> > I am writing an ASoC driver, where i can place these calls
> > 
> > snd_power_change_state(card, SNDRV_CTL_POWER_D3hot);
> > snd_pcm_suspend_all(chip->pcm[i]);
> > 
> > and snd_power_change_state(card, SNDRV_CTL_POWER_D0);
> > 
> > 
> > In soc-core.c ?
> 
> I suppose so.
> In soc_suspend() and soc_resume(), you can get the card instance from
> codec->card, at least.
> 
> But currently SoC doesn't keep the PCM instances, so it cannot be
> implemented as it is...  Liam, any plan or known issue regarding this?
> 
> 
> Takashi