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Commit 25fb7062 authored by Bard Liao's avatar Bard Liao Committed by Mark Brown
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ASoC: rt5640: enable MCLK detection 



There is a power saving mechanism in rt5640. It will turn off some
unused power when MCLK is not present. We call that "MCLK detection"
and it should be enabled by default.

Signed-off-by: default avatarBard Liao <bardliao@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 1001354c

sound/soc/codecs/rt5640.c

+3 −0
Original line number Diff line number Diff line
@@ -2407,6 +2407,9 @@ static int rt5640_i2c_probe(struct i2c_client *i2c, 
	if (ret != 0)

		dev_warn(&i2c->dev, "Failed to apply regmap patch: %d\n", ret);



	regmap_update_bits(rt5640->regmap, RT5640_DUMMY1,

				RT5640_MCLK_DET, RT5640_MCLK_DET);



	if (rt5640->pdata.in1_diff)

		regmap_update_bits(rt5640->regmap, RT5640_IN1_IN2,

					RT5640_IN_DF1, RT5640_IN_DF1);

sound/soc/codecs/rt5640.h

+2 −0
Original line number Diff line number Diff line
@@ -1970,6 +1970,8 @@ 
#define RT5640_ZCD_HP_DIS			(0x0 << 15)

#define RT5640_ZCD_HP_EN			(0x1 << 15)



/* General Control 1 (0xfa) */

#define RT5640_MCLK_DET				(0x1 << 11)



/* Codec Private Register definition */

/* 3D Speaker Control (0x63) */