From: Puyou Lu <puyou.lu@gmail.com> In DSP_A mode, BIT7 of IFACE should bit 0 according to datasheet (ie. inverted frame clock is not support in this mode). Signed-off-by: Puyou Lu <puyou.lu@gmail.com> --- sound/soc/codecs/wm8974.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/sound/soc/codecs/wm8974.c b/sound/soc/codecs/wm8974.c index 764bf93..7cfc896 100644 --- a/sound/soc/codecs/wm8974.c +++ b/sound/soc/codecs/wm8974.c @@ -474,6 +474,10 @@ static int wm8974_set_dai_fmt(struct snd_soc_dai *codec_dai, iface |= 0x0008; break; case SND_SOC_DAIFMT_DSP_A: + if ((fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_IB_IF || + (fmt & SND_SOC_DAIFMT_INV_MASK) == SND_SOC_DAIFMT_NB_IF) { + return -EINVAL; + } iface |= 0x00018; break; default: -- 2.7.4