Add Mono Playback switch to codec controls which enables codec's capability of mixing left and right channel at the DAC output. Signed-off-by: Pavel Dobias <dobias@xxxxx> --- sound/soc/codecs/max9867.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/sound/soc/codecs/max9867.c b/sound/soc/codecs/max9867.c index 9fa2acc73e18..902b1387b797 100644 --- a/sound/soc/codecs/max9867.c +++ b/sound/soc/codecs/max9867.c @@ -79,6 +79,7 @@ static const struct snd_kcontrol_new max9867_snd_controls[] = { SOC_ENUM("DSP Filter", max9867_filter), SOC_ENUM("ADC Filter", max9867_adc_filter), SOC_ENUM("DAC Filter", max9867_dac_filter), + SOC_SINGLE("Mono Playback Switch", MAX9867_IFC1B, 3, 1, 0), }; /* Input mixer */ @@ -361,7 +362,8 @@ static int max9867_dai_set_fmt(struct snd_soc_dai *codec_dai, } regmap_write(max9867->regmap, MAX9867_IFC1A, iface1A); - regmap_write(max9867->regmap, MAX9867_IFC1B, iface1B); + regmap_update_bits(max9867->regmap, MAX9867_IFC1B, + MAX9867_IFC1B_BCLK_MASK, iface1B); return 0; } -- 2.20.1