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From: shawnguo@kernel.org (Shawn Guo)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ASoC: zx-i2s: flip I2S master/slave mode
Date: Sat, 17 Jun 2017 22:25:28 +0800	[thread overview]
Message-ID: <1497709528-23036-1-git-send-email-shawnguo@kernel.org> (raw)

From: Shawn Guo <shawn.guo@linaro.org>

The SND_SOC_DAIFMT_MASTER bits are defined to specify the master/slave
mode for Codec, not I2S.  So the I2S master/slave mode should be flipped
according to SND_SOC_DAIFMT_MASTER bits.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
 sound/soc/zte/zx-i2s.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/sound/soc/zte/zx-i2s.c b/sound/soc/zte/zx-i2s.c
index dd124d5acf01..16195ee776e5 100644
--- a/sound/soc/zte/zx-i2s.c
+++ b/sound/soc/zte/zx-i2s.c
@@ -203,13 +203,15 @@ static int zx_i2s_set_fmt(struct snd_soc_dai *cpu_dai, unsigned int fmt)
 
 	switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
 	case SND_SOC_DAIFMT_CBM_CFM:
-		i2s->master = 1;
-		val |= ZX_I2S_TIMING_MAST;
-		break;
-	case SND_SOC_DAIFMT_CBS_CFS:
+		/* Codec is master, and I2S is slave. */
 		i2s->master = 0;
 		val |= ZX_I2S_TIMING_SLAVE;
 		break;
+	case SND_SOC_DAIFMT_CBS_CFS:
+		/* Codec is slave, and I2S is master. */
+		i2s->master = 1;
+		val |= ZX_I2S_TIMING_MAST;
+		break;
 	default:
 		dev_err(cpu_dai->dev, "Unknown master/slave format\n");
 		return -EINVAL;
-- 
1.9.1

             reply	other threads:[~2017-06-17 14:25 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-17 14:25 Shawn Guo [this message]
2017-06-19 16:23 ` Applied "ASoC: zx-i2s: flip I2S master/slave mode" to the asoc tree Mark Brown

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