after resume when i do playback i am getting same number of DMA interrupt as in the working case (after reboot). I am using aplay (/usr/share/sounds/alsa/Side_Right.wav) But i am not getting any sound (3 underruns), my codec register contents and controller register contents are same. On 5/25/07, Liam Girdwood <lg@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote: > On Fri, 2007-05-25 at 17:34 +0530, Nobin Mathew wrote: > > Every ALSA driver is calling these for suspend > > > > snd_power_change_state(card, SNDRV_CTL_POWER_D3hot); > > snd_pcm_suspend_all(pcm[i]); > > > > And for resume > > snd_power_change_state(card, SNDRV_CTL_POWER_D0) > > > > > > In ALSA ASoC no driver is calling any of this, even not in soc-core.c > > > > My driver is an ASoC driver and I am also not calling these functions > > > > Will this cause any Issue? > > > > These should probably be called to inform the upper layers of the PM > state. Can you log a bug for this in ALSA bugzilla. > > Fwiw, this _shouldn't_ effect your resume. You should still see calls to > trigger for your DMA / AC97 to re-start transmission of PCM data. > > PM was well tested on pxa2xx, although we did find a few applications > were not too happy resuming audio. e.g. mplayer in alsa mode, although > this was about 1 year ago and afaik it's been fixed. > > It may be best to debug this using aplay and placing some debug in your > trigger functions to make sure PCM transmission is restarted correctly. > > Liam > > _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
