Unverified Commit 8e5607e9 authored by Vincent Knecht's avatar Vincent Knecht Committed by Mark Brown
Browse files

ASoC: codecs: tfa989x: Add support for optional vddd-supply 



Allow specifying Vddd regulator/supply to be enabled on I2C probing.

Signed-off-by: default avatarVincent Knecht <vincent.knecht@mailoo.org>
Reviewed-by: default avatarStephan Gerhold <stephan@gerhold.net>
Link: https://lore.kernel.org/r/20210528105101.508254-4-vincent.knecht@mailoo.org


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 9cf1a98e

sound/soc/codecs/tfa989x.c

+34 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ 
#include <linux/i2c.h>

#include <linux/module.h>

#include <linux/regmap.h>

#include <linux/regulator/consumer.h>

#include <sound/soc.h>



#define TFA989X_STATUSREG		0x00
@@ -51,6 +52,10 @@ struct tfa989x_rev { 
	int (*init)(struct regmap *regmap);

};



struct tfa989x {

	struct regulator *vddd_supply;

};



static bool tfa989x_writeable_reg(struct device *dev, unsigned int reg)

{

	return reg > TFA989X_REVISIONNUMBER;
@@ -242,10 +247,18 @@ static int tfa989x_dsp_bypass(struct regmap *regmap) 
				 BIT(TFA989X_SYS_CTRL_AMPC));

}



static void tfa989x_regulator_disable(void *data)

{

	struct tfa989x *tfa989x = data;



	regulator_disable(tfa989x->vddd_supply);

}



static int tfa989x_i2c_probe(struct i2c_client *i2c)

{

	struct device *dev = &i2c->dev;

	const struct tfa989x_rev *rev;

	struct tfa989x *tfa989x;

	struct regmap *regmap;

	unsigned int val;

	int ret;
@@ -256,10 +269,31 @@ static int tfa989x_i2c_probe(struct i2c_client *i2c) 
		return -ENODEV;

	}



	tfa989x = devm_kzalloc(dev, sizeof(*tfa989x), GFP_KERNEL);

	if (!tfa989x)

		return -ENOMEM;



	i2c_set_clientdata(i2c, tfa989x);



	tfa989x->vddd_supply = devm_regulator_get(dev, "vddd");

	if (IS_ERR(tfa989x->vddd_supply))

		return dev_err_probe(dev, PTR_ERR(tfa989x->vddd_supply),

				     "Failed to get vddd regulator\n");



	regmap = devm_regmap_init_i2c(i2c, &tfa989x_regmap);

	if (IS_ERR(regmap))

		return PTR_ERR(regmap);



	ret = regulator_enable(tfa989x->vddd_supply);

	if (ret) {

		dev_err(dev, "Failed to enable vddd regulator: %d\n", ret);

		return ret;

	}



	ret = devm_add_action_or_reset(dev, tfa989x_regulator_disable, tfa989x);

	if (ret)

		return ret;



	/* Bypass regcache for reset and init sequence */

	regcache_cache_bypass(regmap, true);