Unverified Commit 9da52c39 authored by Vincent Knecht's avatar Vincent Knecht Committed by Mark Brown
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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: default avatarVincent Knecht <vincent.knecht@mailoo.org>
Link: https://lore.kernel.org/r/20211031210956.812101-3-vincent.knecht@mailoo.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 77fffb83

sound/soc/codecs/tfa989x.c

+19 −1
Original line number Diff line number Diff line
@@ -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);