Unverified Commit e648e3f1 authored by Paul Cercueil's avatar Paul Cercueil Committed by Mark Brown
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ASoC: codecs/jz4770: Add DAPM widget to set HP out to cap-less mode 



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: default avatarPaul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20201207125338.119397-5-paul@crapouillou.net


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 4f293dfe

sound/soc/codecs/jz4770.c

+6 −2
Original line number Diff line number Diff line
@@ -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);

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