ALSA: ASoC: Use codec digital mute when stopping playback
Muting the DAC masks artefacts introduced as the digital stream shuts
down, for example when the input stops being clocked.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
diff --git a/sound/soc/soc-core.c b/sound/soc/soc-core.c
index 1563cee..ad38113 100644
--- a/sound/soc/soc-core.c
+++ b/sound/soc/soc-core.c
@@ -340,6 +340,12 @@
}
codec->active--;
+ /* Muting the DAC suppresses artifacts caused during digital
+ * shutdown, for example from stopping clocks.
+ */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ snd_soc_dai_digital_mute(codec_dai, 1);
+
if (cpu_dai->ops.shutdown)
cpu_dai->ops.shutdown(substream);