ASoC: Add a shutdown callback
Ensure that the audio subsystem is powered down cleanly when the system
shuts down by providing a shutdown operation. This ensures that all the
components have been returned to an off state cleanly which should avoid
audio issues from partially charged capacitors or noise on digital inputs
if the system is restarted quickly.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Tested-by: Ben Dooks <ben-linux@fluff.org>
diff --git a/include/sound/soc-dapm.h b/include/sound/soc-dapm.h
index ec8a45f..35814ce 100644
--- a/include/sound/soc-dapm.h
+++ b/include/sound/soc-dapm.h
@@ -279,6 +279,7 @@
/* dapm events */
int snd_soc_dapm_stream_event(struct snd_soc_codec *codec, char *stream,
int event);
+void snd_soc_dapm_shutdown(struct snd_soc_device *socdev);
/* dapm sys fs - used by the core */
int snd_soc_dapm_sys_add(struct device *dev);