ASoC: rt1316: fix key tone missing

This patch adds a control that there are three options to control the digital volume output.
The user could select "immediately" to make volume updates immediately
and avoid key tone missing issues.
In default, the driver selects that the volume update when a zero-crossing with a soft ramp.

Signed-off-by: Shuming Fan <shumingf@realtek.com>
Reported-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Link: https://lore.kernel.org/r/20230726091051.658754-1-shumingf@realtek.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt1316-sdw.c b/sound/soc/codecs/rt1316-sdw.c
index 721821d9e9af2abc4f95c32f5a3b00d36f605696..10a53c8d48742cf0c3fcf4eee1b4f0404bd208b5 100644 (file)
--- a/sound/soc/codecs/rt1316-sdw.c
+++ b/sound/soc/codecs/rt1316-sdw.c
@@ -424,6 +424,15 @@ static SOC_ENUM_SINGLE_DECL(rt1316_rx_data_ch_enum,
        SDW_SDCA_CTL(FUNC_NUM_SMART_AMP, RT1316_SDCA_ENT_UDMPU21, RT1316_SDCA_CTL_UDMPU_CLUSTER, 0), 0,
        rt1316_rx_data_ch_select);
 
+static const char * const rt1316_dac_output_vol_select[] = {
+       "immediately",
+       "zero crossing",
+       "zero crossing with soft ramp",
+};
+
+static SOC_ENUM_SINGLE_DECL(rt1316_dac_vol_ctl_enum,
+       0xc010, 6, rt1316_dac_output_vol_select);
+
 static const struct snd_kcontrol_new rt1316_snd_controls[] = {
 
        /* I2S Data Channel Selection */
@@ -442,6 +451,9 @@ static const struct snd_kcontrol_new rt1316_snd_controls[] = {
        /* IV mixer Control */
        SOC_DOUBLE("Isense Mixer Switch", 0xc605, 2, 0, 1, 1),
        SOC_DOUBLE("Vsense Mixer Switch", 0xc605, 3, 1, 1, 1),
+
+       /* DAC Output Volume Control */
+       SOC_ENUM("DAC Output Vol Control", rt1316_dac_vol_ctl_enum),
 };
 
 static const struct snd_kcontrol_new rt1316_sto_dac =