[alsa-devel] [PATCH] ASoC: wm8741: Fix setting BCLK and LRCLK polarity

[Sergej Sawazki]

After checking the code and the datasheet, it seems like we are handling
the clock inversion (SND_SOC_DAIFMT_NB_IF and SND_SOC_DAIFMT_IB_IF) not
correctly.

>From the datasheet (Table 58):
R5 Format Control, BITS[5:4], [BCP:LRP]:
  (0) 00 =  normal   BCLK, normal   LRCLK
  (1) 01 =  normal   BCLK, inverted LRCLK <-- Fix this
  (2) 10 =  inverted BCLK, normal   LRCLK
  (3) 11 =  inverted BCLK, inverted LRCLK <-- Fix this

Signed-off-by: Sergej Sawazki <sergej at taudac.com>
---
 sound/soc/codecs/wm8741.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/sound/soc/codecs/wm8741.c b/sound/soc/codecs/wm8741.c
index 3c96af0..a394dbe 100644
--- a/sound/soc/codecs/wm8741.c
+++ b/sound/soc/codecs/wm8741.c
@@ -333,13 +333,13 @@ static int wm8741_set_dai_fmt(struct snd_soc_dai *codec_dai,
 	switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
 	case SND_SOC_DAIFMT_NB_NF:
 		break;
-	case SND_SOC_DAIFMT_IB_IF:
+	case SND_SOC_DAIFMT_NB_IF:
 		iface |= 0x10;
 		break;
 	case SND_SOC_DAIFMT_IB_NF:
 		iface |= 0x20;
 		break;
-	case SND_SOC_DAIFMT_NB_IF:
+	case SND_SOC_DAIFMT_IB_IF:
 		iface |= 0x30;
 		break;
 	default:
-- 
2.7.4