ASoC: mediatek: mt8183-da7219: add speaker switch

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@google.com>
Link: https://lore.kernel.org/r/20200212124608.2.I5fa3fdca69dbb5d3dd5031c939b9b24095065a94@changeid
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c b/sound/soc/mediatek/mt8183/mt8183-da7219-max98357.c
index c654937..1626541 100644 (file)
--- 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,