linux-kernel - [PATCH] ASoC: amd: Fix for Subsequent Playback issue.

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Date:   Mon, 27 Jan 2020 16:56:03 +0530
From:   Ravulapati Vishnu vardhan rao 
        <Vishnuvardhanrao.Ravulapati@....com>
To:     unlisted-recipients:; (no To-header on input)
CC:     <Alexander.Deucher@....com>, <broonie@...nel.org>,
        "Ravulapati Vishnu vardhan rao" <Vishnuvardhanrao.Ravulapati@....com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Vijendar Mukunda <Vijendar.Mukunda@....com>,
        YueHaibing <yuehaibing@...wei.com>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        "moderated list:SOUND - SOC LAYER / DYNAMIC AUDIO POWER MANAGEM..." 
        <alsa-devel@...a-project.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: [PATCH] ASoC: amd: Fix for Subsequent Playback issue.

If we play audio back to back, which kills one playback
and immediately start another, we can hear clicks.
This patch fixes the issue.

Signed-off-by: Ravulapati Vishnu vardhan rao <Vishnuvardhanrao.Ravulapati@....com>
---
 sound/soc/amd/raven/acp3x-pcm-dma.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/sound/soc/amd/raven/acp3x-pcm-dma.c b/sound/soc/amd/raven/acp3x-pcm-dma.c
index 5c3ec3c..aecc3c0 100644
--- a/sound/soc/amd/raven/acp3x-pcm-dma.c
+++ b/sound/soc/amd/raven/acp3x-pcm-dma.c
@@ -349,13 +349,6 @@ static int acp3x_dma_close(struct snd_soc_component *component,
 	component = snd_soc_rtdcom_lookup(prtd, DRV_NAME);
 	adata = dev_get_drvdata(component->dev);
 
-	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
-		adata->play_stream = NULL;
-		adata->i2ssp_play_stream = NULL;
-	} else {
-		adata->capture_stream = NULL;
-		adata->i2ssp_capture_stream = NULL;
-	}
 
 	/* Disable ACP irq, when the current stream is being closed and
 	 * another stream is also not active.
@@ -363,6 +356,13 @@ static int acp3x_dma_close(struct snd_soc_component *component,
 	if (!adata->play_stream && !adata->capture_stream &&
 		!adata->i2ssp_play_stream && !adata->i2ssp_capture_stream)
 		rv_writel(0, adata->acp3x_base + mmACP_EXTERNAL_INTR_ENB);
+	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
+		adata->play_stream = NULL;
+		adata->i2ssp_play_stream = NULL;
+	} else {
+		adata->capture_stream = NULL;
+		adata->i2ssp_capture_stream = NULL;
+	}
 	return 0;
 }
 
-- 
2.7.4