Unverified Commit ba79bca4 authored by Nuno Sa's avatar Nuno Sa Committed by Mark Brown
Browse files

ASoC: codecs: adau1373: add powerdown gpio 



If the powerdown GPIO is specified, we use it for reset. Otherwise,
fallback to a software reset.

Signed-off-by: default avatarNuno Sa <nuno.sa@analog.com>
Link: https://patch.msgid.link/20241028-adau1373-shutdown-v2-4-647f56bbd182@analog.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 71743cbe

sound/soc/codecs/adau1373.c

+27 −1
Original line number Diff line number Diff line
@@ -8,6 +8,7 @@ 


#include <linux/module.h>

#include <linux/init.h>

#include <linux/gpio/consumer.h>

#include <linux/delay.h>

#include <linux/pm.h>

#include <linux/property.h>
@@ -1485,6 +1486,11 @@ static const struct snd_soc_component_driver adau1373_component_driver = { 
	.endianness		= 1,

};



static void adau1373_reset(void *reset_gpio)

{

	gpiod_set_value_cansleep(reset_gpio, 1);

}



static int adau1373_parse_fw(struct device *dev, struct adau1373 *adau1373)

{

	int ret, drc_count;
@@ -1547,6 +1553,7 @@ static int adau1373_parse_fw(struct device *dev, struct adau1373 *adau1373) 
static int adau1373_i2c_probe(struct i2c_client *client)

{

	struct adau1373 *adau1373;

	struct gpio_desc *gpiod;

	int ret;



	adau1373 = devm_kzalloc(&client->dev, sizeof(*adau1373), GFP_KERNEL);
@@ -1558,7 +1565,26 @@ static int adau1373_i2c_probe(struct i2c_client *client) 
	if (IS_ERR(adau1373->regmap))

		return PTR_ERR(adau1373->regmap);



	/*

	 * If the powerdown GPIO is specified, we use it for reset. Otherwise

	 * a software reset is done.

	 */

	gpiod = devm_gpiod_get_optional(&client->dev, "powerdown",

					GPIOD_OUT_HIGH);

	if (IS_ERR(gpiod))

		return PTR_ERR(gpiod);



	if (gpiod) {

		gpiod_set_value_cansleep(gpiod, 0);

		fsleep(10);



		ret = devm_add_action_or_reset(&client->dev, adau1373_reset,

					       gpiod);

		if (ret)

			return ret;

	} else {

		regmap_write(adau1373->regmap, ADAU1373_SOFT_RESET, 0x00);

	}



	dev_set_drvdata(&client->dev, adau1373);