linux-kernel - [PATCH] ASoC: mediatek: mt8186: fix DMIC record noise

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Date:   Sat, 20 Aug 2022 15:19:25 +0800
From:   Jiaxin Yu <jiaxin.yu@...iatek.com>
To:     <broonie@...nel.org>, <angelogioacchino.delregno@...labora.com>
CC:     <chunxu.li@...iatek.com>, <alsa-devel@...a-project.org>,
        <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>,
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Jiaxin Yu <jiaxin.yu@...iatek.com>
Subject: [PATCH] ASoC: mediatek: mt8186: fix DMIC record noise

When the first DMIC recording is power down, mtkaif_dmic will be reset.
This will cause configuration error in the second DMIC recording. So do
not reset mtkaif_dmic except in "MTKAIF_DMIC Switch" kcontrol.

Signed-off-by: Jiaxin Yu <jiaxin.yu@...iatek.com>
---
 sound/soc/mediatek/mt8186/mt8186-dai-adda.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/sound/soc/mediatek/mt8186/mt8186-dai-adda.c b/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
index 266704556f37..094402470dc2 100644
--- a/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
+++ b/sound/soc/mediatek/mt8186/mt8186-dai-adda.c
@@ -271,9 +271,6 @@ static int mtk_adda_ul_event(struct snd_soc_dapm_widget *w,
 		/* should delayed 1/fs(smallest is 8k) = 125us before afe off */
 		usleep_range(125, 135);
 		mt8186_afe_gpio_request(afe->dev, false, MT8186_DAI_ADDA, 1);
-
-		/* reset dmic */
-		afe_priv->mtkaif_dmic = 0;
 		break;
 	default:
 		break;
-- 
2.25.1