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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: Bard Liao <bardliao@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Bard Liao 2016-07-07 18:56:31 +08:00 committed by Mark Brown
parent e62ebf156f
commit 467b147982
2 changed files with 14 additions and 0 deletions
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11
sound/soc/codecs/rt5645.c
View File

@ -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),
};
/**

3
sound/soc/codecs/rt5645.h
View File

@ -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