[alsa-devel] [PATCH 2/2] ASoC: mediatek: mt8183-da7219: add speaker switch

[Tzung-Bi Shih]

Da7219 and max98357a share the same I2S lines.  When writing audio data
to the I2S, both codecs generate sound.

Da7219 already has a separate control "Headphone Switch".  Adds a new
control "Speakers Switch" for turning on/off max98357a.  Userspace
program can decide to turn on/off which codecs by different use cases.

Signed-off-by: Tzung-Bi Shih <tzungbi at google.com>
---
 .../mediatek/mt8183/mt8183-da7219-max98357.c  | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
index c65493721e90..1626541cc0d6 100644
--- a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
+++ b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
@@ -372,9 +372,28 @@ static struct snd_soc_codec_conf mt6358_codec_conf[] = {
 	},
 };
 
+static const struct snd_kcontrol_new mt8183_da7219_max98357_snd_controls[] = {
+	SOC_DAPM_PIN_SWITCH("Speakers"),
+};
+
+static const
+struct snd_soc_dapm_widget mt8183_da7219_max98357_dapm_widgets[] = {
+	SND_SOC_DAPM_SPK("Speakers", NULL),
+};
+
+static const struct snd_soc_dapm_route mt8183_da7219_max98357_dapm_routes[] = {
+	{"Speakers", NULL, "Speaker"},
+};
+
 static struct snd_soc_card mt8183_da7219_max98357_card = {
 	.name = "mt8183_da7219_max98357",
 	.owner = THIS_MODULE,
+	.controls = mt8183_da7219_max98357_snd_controls,
+	.num_controls = ARRAY_SIZE(mt8183_da7219_max98357_snd_controls),
+	.dapm_widgets = mt8183_da7219_max98357_dapm_widgets,
+	.num_dapm_widgets = ARRAY_SIZE(mt8183_da7219_max98357_dapm_widgets),
+	.dapm_routes = mt8183_da7219_max98357_dapm_routes,
+	.num_dapm_routes = ARRAY_SIZE(mt8183_da7219_max98357_dapm_routes),
 	.dai_link = mt8183_da7219_max98357_dai_links,
 	.num_links = ARRAY_SIZE(mt8183_da7219_max98357_dai_links),
 	.aux_dev = &mt8183_da7219_max98357_headset_dev,
-- 
2.25.0.225.g125e21ebc7-goog