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Subject[PATCH] ASoC: max98357a: Add mixer control to mute/unmute speaker
Date
Add "Playback Switch" mixer control to mute or unmute speaker
playback from ucm conf depend on use cases.

Signed-off-by: Ajit Kumar Pandey <AjitKumar.Pandey@amd.com>
---
sound/soc/codecs/max98357a.c | 32 ++++++++++++++++++++++++++++++++
1 file changed, 32 insertions(+)

diff --git a/sound/soc/codecs/max98357a.c b/sound/soc/codecs/max98357a.c
index 918812763884..9b2f16ab4498 100644
--- a/sound/soc/codecs/max98357a.c
+++ b/sound/soc/codecs/max98357a.c
@@ -73,6 +73,36 @@ static int max98357a_sdmode_event(struct snd_soc_dapm_widget *w,
return 0;
}

+static int speaker_mute_get(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max98357a_priv *max98357a = snd_soc_component_get_drvdata(component);
+
+ ucontrol->value.enumerated.item[0] = max98357a->sdmode_switch;
+
+ return 0;
+}
+
+static int speaker_mute_put(struct snd_kcontrol *kcontrol,
+ struct snd_ctl_elem_value *ucontrol)
+{
+ struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
+ struct max98357a_priv *max98357a = snd_soc_component_get_drvdata(component);
+ int mode = ucontrol->value.enumerated.item[0];
+
+ max98357a->sdmode_switch = mode;
+ gpiod_set_value_cansleep(max98357a->sdmode, mode);
+ dev_dbg(component->dev, "set sdmode to %d", mode);
+
+ return 0;
+}
+
+static const struct snd_kcontrol_new max98357a_snd_controls[] = {
+ SOC_SINGLE_BOOL_EXT("Playback Switch", 0,
+ speaker_mute_get, speaker_mute_put),
+};
+
static const struct snd_soc_dapm_widget max98357a_dapm_widgets[] = {
SND_SOC_DAPM_OUTPUT("Speaker"),
SND_SOC_DAPM_OUT_DRV_E("SD_MODE", SND_SOC_NOPM, 0, 0, NULL, 0,
@@ -86,6 +116,8 @@ static const struct snd_soc_dapm_route max98357a_dapm_routes[] = {
};

static const struct snd_soc_component_driver max98357a_component_driver = {
+ .controls = max98357a_snd_controls,
+ .num_controls = ARRAY_SIZE(max98357a_snd_controls),
.dapm_widgets = max98357a_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(max98357a_dapm_widgets),
.dapm_routes = max98357a_dapm_routes,
--
2.25.1
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