linux-kernel - [alsa-devel][PATCH 2/4] ASoC: wm8960: add 32 bit word length support

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Date:	Tue, 12 May 2015 14:58:21 +0800
From:	Zidan Wang <zidan.wang@...escale.com>
To:	<tiwai@...e.de>
CC:	<broonie@...nel.org>, <lgirdwood@...il.com>,
	<ckeepax@...nsource.wolfsonmicro.com>, <lars@...afoo.de>,
	<patches@...nsource.wolfsonmicro.com>,
	<alsa-devel@...a-project.org>, <linux-kernel@...r.kernel.org>,
	Zidan Wang <zidan.wang@...escale.com>
Subject: [alsa-devel][PATCH 2/4] ASoC: wm8960: add 32 bit word length support

According to referance manual, right justify mode can't
support 32 bit word length.

Signed-off-by: Zidan Wang <zidan.wang@...escale.com>
---
 sound/soc/codecs/wm8960.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/sound/soc/codecs/wm8960.c b/sound/soc/codecs/wm8960.c
index b072501..2559e31 100644
--- a/sound/soc/codecs/wm8960.c
+++ b/sound/soc/codecs/wm8960.c
@@ -655,6 +655,12 @@ static int wm8960_hw_params(struct snd_pcm_substream *substream,
 	case 24:
 		iface |= 0x0008;
 		break;
+	case 32:
+		/* right justify mode does not support 32 word length */
+		if ((iface & 0x3) != 0) {
+			iface |= 0x000c;
+			break;
+		}
 	default:
 		dev_err(codec->dev, "unsupported width %d\n",
 			params_width(params));
@@ -1050,7 +1056,7 @@ static int wm8960_set_dai_sysclk(struct snd_soc_dai *dai, int clk_id,
 
 #define WM8960_FORMATS \
 	(SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
-	SNDRV_PCM_FMTBIT_S24_LE)
+	SNDRV_PCM_FMTBIT_S24_LE | SNDRV_PCM_FMTBIT_S32_LE)
 
 static const struct snd_soc_dai_ops wm8960_dai_ops = {
 	.hw_params = wm8960_hw_params,
-- 
1.9.1

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