openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ASoC: Fix handling of bias levels for non-DAPM codecs 

If the system doesn't have any DAPM widgets then we can't use their
state to check if the bias level for the codec should be up.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2009-08-17 11:55:38 +01:00
parent 0c093fb542
commit b14b76a56e
1 changed files with 16 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
sound/soc/soc-dapm.c
View File

@ -966,6 +966,22 @@ static int dapm_power_widgets(struct snd_soc_codec *codec, int event)
}
}
/* If there are no DAPM widgets then try to figure out power from the
* event type.
*/
if (list_empty(&codec->dapm_widgets)) {
switch (event) {
case SND_SOC_DAPM_STREAM_START:
case SND_SOC_DAPM_STREAM_RESUME:
sys_power = 1;
break;
case SND_SOC_DAPM_STREAM_NOP:
sys_power = codec->bias_level != SND_SOC_BIAS_STANDBY;
default:
break;
}
}
/* If we're changing to all on or all off then prepare */
if ((sys_power && codec->bias_level == SND_SOC_BIAS_STANDBY) ||
(!sys_power && codec->bias_level == SND_SOC_BIAS_ON)) {