[PATCH 2/2] ASoC: rt5682s: add delay time to fix pop sound issue

[PATCH 2/2] ASoC: rt5682s: add delay time to fix pop sound issue

[shumingf]

From: Shuming Fan <shumingf@realtek.com>

There is a pop noise at the beginning of the capture data.
This patch adds the delay time before stereo1 ADC unmute to fix the pop sound issue.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
---
 include/sound/rt5682s.h    |  1 +
 sound/soc/codecs/rt5682s.c | 34 +++++++++++++++++++++++++++++++---
 2 files changed, 32 insertions(+), 3 deletions(-)

diff --git a/include/sound/rt5682s.h b/include/sound/rt5682s.h
index accfbc2dcdd2..f18d91308b9a 100644
--- a/include/sound/rt5682s.h
+++ b/include/sound/rt5682s.h
@@ -40,6 +40,7 @@ struct rt5682s_platform_data {
 	enum rt5682s_jd_src jd_src;
 	unsigned int dmic_clk_rate;
 	unsigned int dmic_delay;
+	unsigned int amic_delay;
 	bool dmic_clk_driving_high;
 
 	const char *dai_clk_names[RT5682S_DAI_NUM_CLKS];
diff --git a/sound/soc/codecs/rt5682s.c b/sound/soc/codecs/rt5682s.c
index d49a4f68566d..efa1016831dd 100644
--- a/sound/soc/codecs/rt5682s.c
+++ b/sound/soc/codecs/rt5682s.c
@@ -1367,6 +1367,31 @@ static int rt5682s_hp_amp_event(struct snd_soc_dapm_widget *w,
 	return 0;
 }
 
+static int rt5682s_stereo1_adc_mixl_event(struct snd_soc_dapm_widget *w,
+		struct snd_kcontrol *kcontrol, int event)
+{
+	struct snd_soc_component *component = snd_soc_dapm_to_component(w->dapm);
+	struct rt5682s_priv *rt5682s = snd_soc_component_get_drvdata(component);
+	unsigned int delay = 0;
+
+	if (rt5682s->pdata.amic_delay)
+		delay = rt5682s->pdata.amic_delay;
+
+	switch (event) {
+	case SND_SOC_DAPM_POST_PMU:
+		msleep(delay);
+		snd_soc_component_update_bits(component, RT5682S_STO1_ADC_DIG_VOL,
+			RT5682S_L_MUTE, 0);
+		break;
+	case SND_SOC_DAPM_PRE_PMD:
+		snd_soc_component_update_bits(component, RT5682S_STO1_ADC_DIG_VOL,
+			RT5682S_L_MUTE, RT5682S_L_MUTE);
+		break;
+	}
+
+	return 0;
+}
+
 static int sar_power_event(struct snd_soc_dapm_widget *w,
 		struct snd_kcontrol *kcontrol, int event)
 {
@@ -1680,9 +1705,10 @@ static const struct snd_soc_dapm_widget rt5682s_dapm_widgets[] = {
 	/* ADC Mixer */
 	SND_SOC_DAPM_SUPPLY("ADC Stereo1 Filter", RT5682S_PWR_DIG_2,
 		RT5682S_PWR_ADC_S1F_BIT, 0, set_filter_clk, SND_SOC_DAPM_PRE_PMU),
-	SND_SOC_DAPM_MIXER("Stereo1 ADC MIXL", RT5682S_STO1_ADC_DIG_VOL,
-		RT5682S_L_MUTE_SFT, 1, rt5682s_sto1_adc_l_mix,
-		ARRAY_SIZE(rt5682s_sto1_adc_l_mix)),
+	SND_SOC_DAPM_MIXER_E("Stereo1 ADC MIXL", SND_SOC_NOPM, 0, 0,
+		rt5682s_sto1_adc_l_mix, ARRAY_SIZE(rt5682s_sto1_adc_l_mix),
+		rt5682s_stereo1_adc_mixl_event,
+		SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMU),
 	SND_SOC_DAPM_MIXER("Stereo1 ADC MIXR", RT5682S_STO1_ADC_DIG_VOL,
 		RT5682S_R_MUTE_SFT, 1, rt5682s_sto1_adc_r_mix,
 		ARRAY_SIZE(rt5682s_sto1_adc_r_mix)),
@@ -2885,6 +2911,8 @@ static int rt5682s_parse_dt(struct rt5682s_priv *rt5682s, struct device *dev)
 		&rt5682s->pdata.dmic_clk_rate);
 	device_property_read_u32(dev, "realtek,dmic-delay-ms",
 		&rt5682s->pdata.dmic_delay);
+	device_property_read_u32(dev, "realtek,amic-delay-ms",
+		&rt5682s->pdata.amic_delay);
 
 	rt5682s->pdata.ldo1_en = of_get_named_gpio(dev->of_node,
 		"realtek,ldo1-en-gpios", 0);
-- 
2.34.1

Re: [PATCH 2/2] ASoC: rt5682s: add delay time to fix pop sound issue

[Mark Brown]

On Wed, 8 Dec 2021 18:17:18 +0800, shumingf@realtek.com wrote:
> From: Shuming Fan <shumingf@realtek.com>
> 
> There is a pop noise at the beginning of the capture data.
> This patch adds the delay time before stereo1 ADC unmute to fix the pop sound issue.
> 
> 

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[2/2] ASoC: rt5682s: add delay time to fix pop sound issue
      commit: 7cfa3d00730a4c0694b55fb1974823baeab8815b

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark