[PATCH stable-6.6 0/2] ASoC: codecs: wsa883x: fix pops and clicks

[PATCH stable-6.6 0/2] ASoC: codecs: wsa883x: fix pops and clicks

[Johan Hovold]

This is a backport of commits

	0220575e65a ("ASoC: soc-dai: add flag to mute and unmute stream during trigger")
	805ce81826c8 ("ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag")

which specifically fix a loud crackling noise when starting a stream on
the Lenovo ThinkPad X13s.

These backports should apply to any stable tree which already has commit
3efcb471f871 ("ASoC: soc-pcm.c: Make sure DAI parameters cleared if the
DAI becomes inactive") backported (e.g. 6.6.2 and 6.5.12).

Note that the interaction of these commits resulted in a bad merge in
mainline which is fixed up here:

	https://lore.kernel.org/lkml/20231123091815.21933-1-johan+linaro@kernel.org/

Johan


Srinivas Kandagatla (2):
  ASoC: soc-dai: add flag to mute and unmute stream during trigger
  ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag

 include/sound/soc-dai.h    |  1 +
 sound/soc/codecs/wsa883x.c |  7 +------
 sound/soc/soc-dai.c        |  7 +++++++
 sound/soc/soc-pcm.c        | 12 ++++++++----
 4 files changed, 17 insertions(+), 10 deletions(-)

-- 
2.41.0

[PATCH stable-6.6 1/2] ASoC: soc-dai: add flag to mute and unmute stream during trigger

[Johan Hovold]

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

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 <srinivas.kandagatla@linaro.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231027105747.32450-2-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
[ johan: backport to v6.6.2 ]
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 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

[PATCH stable-6.6 2/2] ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag

[Johan Hovold]

From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>

commit 805ce81826c896dd3c351a32814b28557f9edf54 upstream.

In the current setup the PA is left unmuted even when the
Soundwire ports are not started streaming. This can lead to click
and pop sounds during start.
There is a same issue in the reverse order where in the PA is
left unmute even after the data stream is stopped, the time
between data stream stopping and port closing is long enough
to accumulate DC on the line resulting in Click/Pop noise
during end of stream.

making use of new mute_unmute_on_trigger flag is helping a
lot with this Click/Pop issues reported on this Codec

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Tested-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20231027105747.32450-3-srinivas.kandagatla@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 sound/soc/codecs/wsa883x.c | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c
index 197fae23762f..cb83c569e18d 100644
--- a/sound/soc/codecs/wsa883x.c
+++ b/sound/soc/codecs/wsa883x.c
@@ -1203,9 +1203,6 @@ static int wsa883x_spkr_event(struct snd_soc_dapm_widget *w,
 			break;
 		}
 
-		snd_soc_component_write_field(component, WSA883X_DRE_CTL_1,
-					      WSA883X_DRE_GAIN_EN_MASK,
-					      WSA883X_DRE_GAIN_FROM_CSR);
 		if (wsa883x->port_enable[WSA883X_PORT_COMP])
 			snd_soc_component_write_field(component, WSA883X_DRE_CTL_0,
 						      WSA883X_DRE_OFFSET_MASK,
@@ -1218,9 +1215,6 @@ static int wsa883x_spkr_event(struct snd_soc_dapm_widget *w,
 		snd_soc_component_write_field(component, WSA883X_PDM_WD_CTL,
 					      WSA883X_PDM_EN_MASK,
 					      WSA883X_PDM_ENABLE);
-		snd_soc_component_write_field(component, WSA883X_PA_FSM_CTL,
-					      WSA883X_GLOBAL_PA_EN_MASK,
-					      WSA883X_GLOBAL_PA_ENABLE);
 
 		break;
 	case SND_SOC_DAPM_PRE_PMD:
@@ -1346,6 +1340,7 @@ static const struct snd_soc_dai_ops wsa883x_dai_ops = {
 	.hw_free = wsa883x_hw_free,
 	.mute_stream = wsa883x_digital_mute,
 	.set_stream = wsa883x_set_sdw_stream,
+	.mute_unmute_on_trigger = true,
 };
 
 static struct snd_soc_dai_driver wsa883x_dais[] = {
-- 
2.41.0

Re: [PATCH stable-6.6 0/2] ASoC: codecs: wsa883x: fix pops and clicks

[Greg Kroah-Hartman]

On Thu, Nov 23, 2023 at 10:47:47AM +0100, Johan Hovold wrote:
> This is a backport of commits
> 
> 	0220575e65a ("ASoC: soc-dai: add flag to mute and unmute stream during trigger")
> 	805ce81826c8 ("ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag")
> 
> which specifically fix a loud crackling noise when starting a stream on
> the Lenovo ThinkPad X13s.
> 
> These backports should apply to any stable tree which already has commit
> 3efcb471f871 ("ASoC: soc-pcm.c: Make sure DAI parameters cleared if the
> DAI becomes inactive") backported (e.g. 6.6.2 and 6.5.12).
> 
> Note that the interaction of these commits resulted in a bad merge in
> mainline which is fixed up here:
> 
> 	https://lore.kernel.org/lkml/20231123091815.21933-1-johan+linaro@kernel.org/

Thanks, now queued up.

greg k-h