ASoC: codecs: tfa989x: Add support for tfa9897 RCV bit

TFA9897 has an internal 'rcv' switch so that it can manage both
loudspeaker and earpiece modes with the same physical speaker.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Link: https://lore.kernel.org/r/20211024085840.1536438-3-vincent.knecht@mailoo.org
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/tfa989x.c b/sound/soc/codecs/tfa989x.c
index 643b45188b6fd189e1931c6d1b820a63d776da7a..eb2a7870148dea87c5fd71d64b0748ce99d10f61 100644 (file)
--- a/sound/soc/codecs/tfa989x.c
+++ b/sound/soc/codecs/tfa989x.c
@@ -19,6 +19,7 @@
 #define TFA989X_REVISIONNUMBER         0x03
 #define TFA989X_REVISIONNUMBER_REV_MSK GENMASK(7, 0)   /* device revision */
 #define TFA989X_I2SREG                 0x04
+#define TFA989X_I2SREG_RCV             2       /* receiver mode */
 #define TFA989X_I2SREG_CHSA            6       /* amplifier input select */
 #define TFA989X_I2SREG_CHSA_MSK                GENMASK(7, 6)
 #define TFA989X_I2SREG_I2SSR           12      /* sample rate */
@@ -53,6 +54,7 @@ struct tfa989x_rev {
 };
 
 struct tfa989x {
+       const struct tfa989x_rev *rev;
        struct regulator *vddd_supply;
 };
 
@@ -97,7 +99,25 @@ static const struct snd_soc_dapm_route tfa989x_dapm_routes[] = {
        {"Amp Input", "Right", "AIFINR"},
 };
 
+static const char * const mode_text[] = { "Speaker", "Receiver" };
+static SOC_ENUM_SINGLE_DECL(mode_enum, TFA989X_I2SREG, TFA989X_I2SREG_RCV, mode_text);
+static const struct snd_kcontrol_new tfa989x_mode_controls[] = {
+       SOC_ENUM("Mode", mode_enum),
+};
+
+static int tfa989x_probe(struct snd_soc_component *component)
+{
+       struct tfa989x *tfa989x = snd_soc_component_get_drvdata(component);
+
+       if (tfa989x->rev->rev == TFA9897_REVISION)
+               return snd_soc_add_component_controls(component, tfa989x_mode_controls,
+                                                     ARRAY_SIZE(tfa989x_mode_controls));
+
+       return 0;
+}
+
 static const struct snd_soc_component_driver tfa989x_component = {
+       .probe                  = tfa989x_probe,
        .dapm_widgets           = tfa989x_dapm_widgets,
        .num_dapm_widgets       = ARRAY_SIZE(tfa989x_dapm_widgets),
        .dapm_routes            = tfa989x_dapm_routes,
@@ -273,6 +293,7 @@ static int tfa989x_i2c_probe(struct i2c_client *i2c)
        if (!tfa989x)
                return -ENOMEM;
 
+       tfa989x->rev = rev;
        i2c_set_clientdata(i2c, tfa989x);
 
        tfa989x->vddd_supply = devm_regulator_get(dev, "vddd");