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@xxxxxxxxxxx>
---
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
--
1.8.1.1.439.g50a6b54
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