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ASoC: Fix handling of DAPM suspend work 

Since we can query the playback stream power state directly we do not
need to infer if it is powered up from the timer being scheduled.  Doing
this avoids problems that previously existed with streams being
incorrectly determined to be powered up caused when the timer is
scheduled when streams are closed after being partially set up.

Reported-by: Nobin Mathew <nobin.mathew@gmail.com>
Reported-by: Jukka Hynninen <ext-jukka.hynninen@vaisala.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2008-10-14 13:58:36 +01:00 committed by Mark Brown
parent 12ef193d58
commit d45f6219d2
1 changed files with 28 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

65
sound/soc/soc-core.c
View File

@ -429,51 +429,42 @@ static int soc_pcm_prepare(struct snd_pcm_substream *substream)
}
}
/* we only want to start a DAPM playback stream if we are not waiting
* on an existing one stopping */
if (codec_dai->pop_wait) {
/* we are waiting for the delayed work to start */
if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
snd_soc_dapm_stream_event(socdev->codec,
/* cancel any delayed stream shutdown that is pending */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK &&
codec_dai->pop_wait) {
codec_dai->pop_wait = 0;
cancel_delayed_work(&socdev->delayed_work);
}
/* do we need to power up codec */
if (codec->bias_level != SND_SOC_BIAS_ON) {
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_PREPARE);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
else
snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
else {
codec_dai->pop_wait = 0;
cancel_delayed_work(&socdev->delayed_work);
snd_soc_dai_digital_mute(codec_dai, 0);
}
snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
snd_soc_dai_digital_mute(codec_dai, 0);
} else {
/* no delayed work - do we need to power up codec */
if (codec->bias_level != SND_SOC_BIAS_ON) {
snd_soc_dapm_set_bias_level(socdev,
SND_SOC_BIAS_PREPARE);
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_stream_event(codec,
/* codec already powered - power on widgets */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
else
snd_soc_dapm_stream_event(codec,
else
snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
snd_soc_dapm_set_bias_level(socdev, SND_SOC_BIAS_ON);
snd_soc_dai_digital_mute(codec_dai, 0);
} else {
/* codec already powered - power on widgets */
if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
snd_soc_dapm_stream_event(codec,
codec_dai->playback.stream_name,
SND_SOC_DAPM_STREAM_START);
else
snd_soc_dapm_stream_event(codec,
codec_dai->capture.stream_name,
SND_SOC_DAPM_STREAM_START);
snd_soc_dai_digital_mute(codec_dai, 0);
}
snd_soc_dai_digital_mute(codec_dai, 0);
}
out: