Cap-less mode is useful e.g. if the headphones are used as an antenna for a FM radio, so that the signal is not altered. For everything else, we want the cap-couple mode.
Signed-off-by: Paul Cercueil <[email protected]> --- sound/soc/codecs/jz4770.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/sound/soc/codecs/jz4770.c b/sound/soc/codecs/jz4770.c index 909b70e817b4..c9fe7f72bfcb 100644 --- a/sound/soc/codecs/jz4770.c +++ b/sound/soc/codecs/jz4770.c @@ -98,7 +98,7 @@ enum { #define REG_CR_HP_MUTE BIT(7) #define REG_CR_HP_LOAD BIT(6) #define REG_CR_HP_SB_OFFSET 4 -#define REG_CR_HP_SB_HPCM BIT(3) +#define REG_CR_HP_SB_HPCM_OFFSET 3 #define REG_CR_HP_SEL_OFFSET 0 #define REG_CR_HP_SEL_MASK (0x3 << REG_CR_HP_SEL_OFFSET) @@ -519,6 +519,9 @@ static const struct snd_soc_dapm_widget jz4770_codec_dapm_widgets[] = { SND_SOC_DAPM_SUPPLY("MICBIAS", JZ4770_CODEC_REG_CR_MIC, REG_CR_MIC_BIAS_SB_OFFSET, 1, NULL, 0), + SND_SOC_DAPM_SUPPLY("Cap-less", JZ4770_CODEC_REG_CR_HP, + REG_CR_HP_SB_HPCM_OFFSET, 1, NULL, 0), + SND_SOC_DAPM_INPUT("MIC1P"), SND_SOC_DAPM_INPUT("MIC1N"), SND_SOC_DAPM_INPUT("MIC2P"), @@ -640,7 +643,8 @@ static void jz4770_codec_codec_init_regs(struct snd_soc_component *codec) regmap_set_bits(regmap, JZ4770_CODEC_REG_CR_ADC, REG_CR_ADC_LRSWAP); /* default to cap-less mode(0) */ - regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_HP, REG_CR_HP_SB_HPCM); + regmap_clear_bits(regmap, JZ4770_CODEC_REG_CR_HP, + BIT(REG_CR_HP_SB_HPCM_OFFSET)); /* Send collected updates. */ regcache_cache_only(regmap, false); -- 2.29.2
