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Commit 467b1479 authored by Bard Liao's avatar Bard Liao Committed by Mark Brown
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ASoC: rt5645: add DAC1 soft volume func control 



This patch add an alsa control for DAC1 digital volume control function
selection. The options are:
0: Gain update immediately
1: Gain update when a zero crossing
2: Gain update when a zero crossing with a soft ramp

Signed-off-by: default avatarBard Liao <bardliao@realtek.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent e62ebf15

sound/soc/codecs/rt5645.c

+11 −0
Original line number Diff line number Diff line
@@ -741,6 +741,14 @@ static int rt5645_spk_put_volsw(struct snd_kcontrol *kcontrol, 
	return ret;

}



static const char * const rt5645_dac1_vol_ctrl_mode_text[] = {

	"immediately", "zero crossing", "soft ramp"

};



static SOC_ENUM_SINGLE_DECL(

	rt5645_dac1_vol_ctrl_mode, RT5645_PR_BASE,

	RT5645_DA1_ZDET_SFT, rt5645_dac1_vol_ctrl_mode_text);



static const struct snd_kcontrol_new rt5645_snd_controls[] = {

	/* Speaker Output Volume */

	SOC_DOUBLE("Speaker Channel Switch", RT5645_SPK_VOL,
@@ -807,6 +815,9 @@ static const struct snd_kcontrol_new rt5645_snd_controls[] = { 
	SOC_SINGLE("I2S2 Func Switch", RT5645_GPIO_CTRL1, RT5645_I2S2_SEL_SFT,

		1, 1),

	RT5645_HWEQ("Speaker HWEQ"),



	/* Digital Soft Volume Control */

	SOC_ENUM("DAC1 Digital Volume Control Func", rt5645_dac1_vol_ctrl_mode),

};



/**

sound/soc/codecs/rt5645.h

+3 −0
Original line number Diff line number Diff line
@@ -2018,6 +2018,9 @@ 




/* Codec Private Register definition */

/* DAC ADC Digital Volume (0x00) */

#define RT5645_DA1_ZDET_SFT			6



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

#define RT5645_3D_SPK_MASK			(0x1 << 15)

#define RT5645_3D_SPK_SFT			15