[alsa-devel] [PATCH 1/3] ASoC: ak4642: add SND_SOC_DAIFMT_FORMAT support

[Kuninori Morimoto]

This patch support LEFT_J / I2S only for now

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx at renesas.com>
---
 sound/soc/codecs/ak4642.c |   24 ++++++++++++++++++++++++
 sound/soc/sh/fsi-ak4642.c |    3 ++-
 2 files changed, 26 insertions(+), 1 deletions(-)

diff --git a/sound/soc/codecs/ak4642.c b/sound/soc/codecs/ak4642.c
index f00eba3..4be0570 100644
--- a/sound/soc/codecs/ak4642.c
+++ b/sound/soc/codecs/ak4642.c
@@ -116,6 +116,12 @@
 #define BCKO_MASK	(1 << 3)
 #define BCKO_64		BCKO_MASK
 
+#define DIF_MASK	(3 << 0)
+#define DSP		(0 << 0)
+#define RIGHT_J		(1 << 0)
+#define LEFT_J		(2 << 0)
+#define I2S		(3 << 0)
+
 /* MD_CTL2 */
 #define FS0		(1 << 0)
 #define FS1		(1 << 1)
@@ -354,6 +360,24 @@ static int ak4642_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
 	snd_soc_update_bits(codec, PW_MGMT2, MS, data);
 	snd_soc_update_bits(codec, MD_CTL1, BCKO_MASK, bcko);
 
+	/* format type */
+	data = 0;
+	switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
+	case SND_SOC_DAIFMT_LEFT_J:
+		data = LEFT_J;
+		break;
+	case SND_SOC_DAIFMT_I2S:
+		data = I2S;
+		break;
+	/* FIXME
+	 * Please add RIGHT_J / DSP support here
+	 */
+	default:
+		return -EINVAL;
+		break;
+	}
+	snd_soc_update_bits(codec, MD_CTL1, DIF_MASK, data);
+
 	return 0;
 }
 
diff --git a/sound/soc/sh/fsi-ak4642.c b/sound/soc/sh/fsi-ak4642.c
index a14820a..9478b55 100644
--- a/sound/soc/sh/fsi-ak4642.c
+++ b/sound/soc/sh/fsi-ak4642.c
@@ -25,7 +25,8 @@ static int fsi_ak4642_dai_init(struct snd_soc_pcm_runtime *rtd)
 	struct snd_soc_dai *dai = rtd->codec_dai;
 	int ret;
 
-	ret = snd_soc_dai_set_fmt(dai, SND_SOC_DAIFMT_CBM_CFM);
+	ret = snd_soc_dai_set_fmt(dai, SND_SOC_DAIFMT_LEFT_J |
+				       SND_SOC_DAIFMT_CBM_CFM);
 	if (ret < 0)
 		return ret;
 
-- 
1.7.1