Unverified Commit 11b9cd74 authored by Olivier Moysan's avatar Olivier Moysan Committed by Mark Brown
Browse files

ASoC: cs42l51: add reset management 



Manage cs42l51 audio codec reset pin.

Signed-off-by: default avatarOlivier Moysan <olivier.moysan@st.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent f77b6ea7

sound/soc/codecs/cs42l51.c

+15 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ 
#include <sound/initval.h>

#include <sound/pcm_params.h>

#include <sound/pcm.h>

#include <linux/gpio/consumer.h>

#include <linux/regmap.h>

#include <linux/regulator/consumer.h>
@@ -54,6 +55,7 @@ struct cs42l51_private { 
	unsigned int audio_mode;	/* The mode (I2S or left-justified) */

	enum master_slave_mode func;

	struct regulator_bulk_data supplies[ARRAY_SIZE(cs42l51_supply_names)];

	struct gpio_desc *reset_gpio;

};



#define CS42L51_FORMATS ( \
@@ -595,6 +597,17 @@ int cs42l51_probe(struct device *dev, struct regmap *regmap) 
		return ret;

	}



	cs42l51->reset_gpio = devm_gpiod_get_optional(dev, "reset",

						      GPIOD_OUT_LOW);

	if (IS_ERR(cs42l51->reset_gpio))

		return PTR_ERR(cs42l51->reset_gpio);



	if (cs42l51->reset_gpio) {

		dev_dbg(dev, "Release reset gpio\n");

		gpiod_set_value_cansleep(cs42l51->reset_gpio, 0);

		mdelay(2);

	}



	/* Verify that we have a CS42L51 */

	ret = regmap_read(regmap, CS42L51_CHIP_REV_ID, &val);

	if (ret < 0) {
@@ -629,6 +642,8 @@ int cs42l51_remove(struct device *dev) 
{

	struct cs42l51_private *cs42l51 = dev_get_drvdata(dev);



	gpiod_set_value_cansleep(cs42l51->reset_gpio, 1);



	return regulator_bulk_disable(ARRAY_SIZE(cs42l51->supplies),

				      cs42l51->supplies);

}