From: Codrin Ciubotariu codrin.ciubotariu@microchip.com
By default, the codec starts to interpret the left (first) channel on the falling edge (low polarity) of LRCLK. However, for DSP_A, the left channel needs to start on the rising edge of LRCLK. This patch fixes this channel swap by toggling the bit which selects the LRCLK polarity.
Signed-off-by: Codrin Ciubotariu codrin.ciubotariu@microchip.com --- sound/soc/codecs/ad193x.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/sound/soc/codecs/ad193x.c b/sound/soc/codecs/ad193x.c index c16c9969d1a0..315ec9775118 100644 --- a/sound/soc/codecs/ad193x.c +++ b/sound/soc/codecs/ad193x.c @@ -228,6 +228,12 @@ static int ad193x_set_dai_fmt(struct snd_soc_dai *codec_dai, return -EINVAL; }
+ /* For DSP_*, LRCLK's polarity must be inverted */ + if (fmt & SND_SOC_DAIFMT_DSP_A) { + change_bit(ffs(AD193X_DAC_LEFT_HIGH) - 1, + (unsigned long *)&dac_fmt); + } + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { case SND_SOC_DAIFMT_CBM_CFM: /* codec clk & frm master */ adc_fmt |= AD193X_ADC_LCR_MASTER;