From: Srinivas Kandagatla <[email protected]>
commit f0220575e65abe09c09cd17826a3cdea76e8d58f upstream.
In some setups like Speaker amps which are very sensitive, ex: keeping them
unmute without actual data stream for very short duration results in a
static charge and results in pop and clicks. To minimize this, provide a way
to mute and unmute such codecs during trigger callbacks.
Signed-off-by: Srinivas Kandagatla <[email protected]>
Tested-by: Johan Hovold <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
[ johan: backport to v6.6.2 ]
Signed-off-by: Johan Hovold <[email protected]>
---
include/sound/soc-dai.h | 1 +
sound/soc/soc-dai.c | 7 +++++++
sound/soc/soc-pcm.c | 12 ++++++++----
3 files changed, 16 insertions(+), 4 deletions(-)
diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h
index 5fcfba47d98c..adcd8719d343 100644
--- a/include/sound/soc-dai.h
+++ b/include/sound/soc-dai.h
@@ -370,6 +370,7 @@ struct snd_soc_dai_ops {
/* bit field */
unsigned int no_capture_mute:1;
+ unsigned int mute_unmute_on_trigger:1;
};
struct snd_soc_cdai_ops {
diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c
index 3f33f0630ad8..9a828e55c4f9 100644
--- a/sound/soc/soc-dai.c
+++ b/sound/soc/soc-dai.c
@@ -658,6 +658,10 @@ int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream,
ret = soc_dai_trigger(dai, substream, cmd);
if (ret < 0)
break;
+
+ if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
+ snd_soc_dai_digital_mute(dai, 0, substream->stream);
+
soc_dai_mark_push(dai, substream, trigger);
}
break;
@@ -668,6 +672,9 @@ int snd_soc_pcm_dai_trigger(struct snd_pcm_substream *substream,
if (rollback && !soc_dai_mark_match(dai, substream, trigger))
continue;
+ if (dai->driver->ops && dai->driver->ops->mute_unmute_on_trigger)
+ snd_soc_dai_digital_mute(dai, 1, substream->stream);
+
r = soc_dai_trigger(dai, substream, cmd);
if (r < 0)
ret = r; /* use last ret */
diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c
index 0a20122b3e55..511446a30c05 100644
--- a/sound/soc/soc-pcm.c
+++ b/sound/soc/soc-pcm.c
@@ -896,8 +896,10 @@ static int __soc_pcm_prepare(struct snd_soc_pcm_runtime *rtd,
snd_soc_dapm_stream_event(rtd, substream->stream,
SND_SOC_DAPM_STREAM_START);
- for_each_rtd_dais(rtd, i, dai)
- snd_soc_dai_digital_mute(dai, 0, substream->stream);
+ for_each_rtd_dais(rtd, i, dai) {
+ if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger)
+ snd_soc_dai_digital_mute(dai, 0, substream->stream);
+ }
out:
return soc_pcm_ret(rtd, ret);
@@ -939,8 +941,10 @@ static int soc_pcm_hw_clean(struct snd_soc_pcm_runtime *rtd,
if (snd_soc_dai_active(dai) == 1)
soc_pcm_set_dai_params(dai, NULL);
- if (snd_soc_dai_stream_active(dai, substream->stream) == 1)
- snd_soc_dai_digital_mute(dai, 1, substream->stream);
+ if (snd_soc_dai_stream_active(dai, substream->stream) == 1) {
+ if (dai->driver->ops && !dai->driver->ops->mute_unmute_on_trigger)
+ snd_soc_dai_digital_mute(dai, 1, substream->stream);
+ }
}
/* run the stream event */
--
2.41.0