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 --- v2 * Use SOC_ENUM --- sound/soc/codecs/rt5645.c | 11 +++++++++++ sound/soc/codecs/rt5645.h | 3 +++ 2 files changed, 14 insertions(+)
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c index 9251720..aefce8f 100644 --- a/sound/soc/codecs/rt5645.c +++ b/sound/soc/codecs/rt5645.c @@ -742,6 +742,14 @@ 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, @@ -808,6 +816,9 @@ 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), };
/** diff --git a/sound/soc/codecs/rt5645.h b/sound/soc/codecs/rt5645.h index 205e071..cfc5f97 100644 --- a/sound/soc/codecs/rt5645.h +++ b/sound/soc/codecs/rt5645.h @@ -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