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authorLars-Peter Clausen <lars@metafoo.de>2014-09-04 21:44:06 +0400
committerMark Brown <broonie@kernel.org>2014-09-04 23:10:25 +0400
commit86dbf2ac6fcb2d2932d4610f2dfe0954aa0633f7 (patch)
treeeca1064e4c727feb98ab402f81f3f8b83e3f0bd1 /include/sound/soc-dapm.h
parent1c325f771a88579f227fe017e4ee77d852cf5435 (diff)
downloadlinux-86dbf2ac6fcb2d2932d4610f2dfe0954aa0633f7.tar.xz
ASoC: Add support for automatically going to BIAS_OFF on suspend
There is a substantial amount of drivers that in go to SND_SOC_BIAS_OFF on suspend and go back to SND_SOC_BIAS_SUSPEND on resume (Often this is even the only thing done in the suspend and resume handlers). This patch introduces a new suspend_bias_off flag, which when set by a driver will let the ASoC core automatically put the device's DAPM context at the SND_SOC_BIAS_OFF level during suspend. Once the device is resumed the DAPM context will go back to SND_SOC_BIAS_STANDBY (if the context is idle, otherwise to SND_SOC_BIAS_ON). This will allow us to remove a fair bit of duplicated code from the drivers. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'include/sound/soc-dapm.h')
-rw-r--r--include/sound/soc-dapm.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index aac04ff84eea..f955d65c5656 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -587,7 +587,8 @@ struct snd_soc_dapm_context {
enum snd_soc_bias_level suspend_bias_level;
struct delayed_work delayed_work;
unsigned int idle_bias_off:1; /* Use BIAS_OFF instead of STANDBY */
-
+ /* Go to BIAS_OFF in suspend if the DAPM context is idle */
+ unsigned int suspend_bias_off:1;
void (*seq_notifier)(struct snd_soc_dapm_context *,
enum snd_soc_dapm_type, int);