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>
---
sound/soc/codecs/rt5645.c | 4 ++++
sound/soc/codecs/rt5645.h | 3 +++
2 files changed, 7 insertions(+)
diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 9251720..036628c 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -808,6 +808,10 @@ 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"),
+
+ /* Digiatl Soft Volume Control */
+ SOC_SINGLE("DAC1 Digital Volume Control Func",
+ RT5645_PR_BASE, RT5645_DA1_ZDET_SFT, 3, 0),
};
/**
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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