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| author | Olivier Moysan <olivier.moysan@st.com> | 2019-04-03 15:23:33 +0200 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2019-04-04 20:53:18 +0700 |
| commit | 11b9cd748e3107df5c5e040a4daa986a3c6d8b75 (patch) | |
| tree | 1d04f720267f908a6ab0d986ca363aa6e289a276 /sound/soc/codecs/cs42l51.c | |
| parent | f77b6ea70f3a672092e2d7eca2e67be09c0b8c54 (diff) | |
| download | lwn-11b9cd748e3107df5c5e040a4daa986a3c6d8b75.tar.gz lwn-11b9cd748e3107df5c5e040a4daa986a3c6d8b75.zip | |
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>
Diffstat (limited to 'sound/soc/codecs/cs42l51.c')
| -rw-r--r-- | sound/soc/codecs/cs42l51.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs42l51.c b/sound/soc/codecs/cs42l51.c index f43eb51d2d8d..9b3ffa16b204 100644 --- a/sound/soc/codecs/cs42l51.c +++ b/sound/soc/codecs/cs42l51.c @@ -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); } |