ASoC: zx-i2s: flip I2S master/slave mode

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>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org

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;