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From:   Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To:     broonie@kernel.org
Cc:     johan@kernel.org, perex@perex.cz, tiwai@suse.com,
        lgirdwood@gmail.com, linux-kernel@vger.kernel.org,
        alsa-devel@alsa-project.org,
        Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [RFC PATCH 2/2] ASoC: codecs: wsa883x: make use of new mute_unmute_on_trigger flag
Date:   Fri, 27 Oct 2023 11:57:47 +0100
Message-Id: <20231027105747.32450-3-srinivas.kandagatla@linaro.org>
In-Reply-To: <20231027105747.32450-1-srinivas.kandagatla@linaro.org>
References: <20231027105747.32450-1-srinivas.kandagatla@linaro.org>
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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>
---
 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 e40d583a1ce6..4ea550b0601b 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[] = {
-- 
2.21.0