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ASoC: cs42l51: add reset management 

Manage cs42l51 audio codec reset pin.

Signed-off-by: Olivier Moysan <olivier.moysan@st.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Olivier Moysan 2019-04-03 15:23:33 +02:00 committed by Mark Brown
parent f77b6ea70f
commit 11b9cd748e
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 15 additions and 0 deletions
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15
sound/soc/codecs/cs42l51.c
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@ -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);
}