Unverified Commit 90f6e680 authored Feb 18, 2019 by Codrin Ciubotariu Committed by Mark Brown Feb 18, 2019

ASoC: codecs: ad193x: Fix frame polarity for DSP_A format

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>
Signed-off-by: Mark Brown <broonie@kernel.org>

parent 75c2ecb4

sound/soc/codecs/ad193x.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -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;

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