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ASoC: codecs: tfa989x: Add support for tfa9897 optional rcv-gpios 

Some OEM use a GPIO in addition to the tfa9897 RCV bit to
switch between loudspeaker and earpiece/receiver mode.

Add support for the GPIO switching by specifying rcv-gpios in DT.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
Link: https://lore.kernel.org/r/20211031210956.812101-3-vincent.knecht@mailoo.org
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vincent Knecht 2021-10-31 22:09:56 +01:00 committed by Mark Brown
parent 77fffb8393
commit 9da52c39b3
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 19 additions and 1 deletions
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20
sound/soc/codecs/tfa989x.c
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@ -7,6 +7,7 @@
* Copyright (C) 2013 Sony Mobile Communications Inc.
*/
#include <linux/gpio/consumer.h>
#include <linux/i2c.h>
#include <linux/module.h>
#include <linux/regmap.h>
@ -56,6 +57,7 @@ struct tfa989x_rev {
struct tfa989x {
const struct tfa989x_rev *rev;
struct regulator *vddd_supply;
struct gpio_desc *rcv_gpiod;
};
static bool tfa989x_writeable_reg(struct device *dev, unsigned int reg)
@ -99,10 +101,20 @@ static const struct snd_soc_dapm_route tfa989x_dapm_routes[] = {
{"Amp Input", "Right", "AIFINR"},
};
static int tfa989x_put_mode(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
{
struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
struct tfa989x *tfa989x = snd_soc_component_get_drvdata(component);
gpiod_set_value_cansleep(tfa989x->rcv_gpiod, ucontrol->value.enumerated.item[0]);
return snd_soc_put_enum_double(kcontrol, ucontrol);
}
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),
SOC_ENUM_EXT("Mode", mode_enum, snd_soc_get_enum_double, tfa989x_put_mode),
};
static int tfa989x_probe(struct snd_soc_component *component)
@ -301,6 +313,12 @@ static int tfa989x_i2c_probe(struct i2c_client *i2c)
return dev_err_probe(dev, PTR_ERR(tfa989x->vddd_supply),
"Failed to get vddd regulator\n");
if (tfa989x->rev->rev == TFA9897_REVISION) {
tfa989x->rcv_gpiod = devm_gpiod_get_optional(dev, "rcv", GPIOD_OUT_LOW);
if (IS_ERR(tfa989x->rcv_gpiod))
return PTR_ERR(tfa989x->rcv_gpiod);
}
regmap = devm_regmap_init_i2c(i2c, &tfa989x_regmap);
if (IS_ERR(regmap))
return PTR_ERR(regmap);