diff options
Diffstat (limited to 'sound/soc/codecs/cs42xx8.c')
| -rw-r--r-- | sound/soc/codecs/cs42xx8.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/sound/soc/codecs/cs42xx8.c b/sound/soc/codecs/cs42xx8.c index 28a4ac36c4f8..b377cddaf2e6 100644 --- a/sound/soc/codecs/cs42xx8.c +++ b/sound/soc/codecs/cs42xx8.c @@ -14,6 +14,7 @@ #include <linux/delay.h> #include <linux/module.h> #include <linux/of_device.h> +#include <linux/of_gpio.h> #include <linux/pm_runtime.h> #include <linux/regulator/consumer.h> #include <sound/pcm_params.h> @@ -45,6 +46,7 @@ struct cs42xx8_priv { bool slave_mode; unsigned long sysclk; u32 tx_channels; + struct gpio_desc *gpiod_reset; }; /* -127.5dB to 0dB with step of 0.5dB */ @@ -467,6 +469,13 @@ int cs42xx8_probe(struct device *dev, struct regmap *regmap) return -EINVAL; } + cs42xx8->gpiod_reset = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + if (IS_ERR(cs42xx8->gpiod_reset)) + return PTR_ERR(cs42xx8->gpiod_reset); + + gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); + cs42xx8->clk = devm_clk_get(dev, "mclk"); if (IS_ERR(cs42xx8->clk)) { dev_err(dev, "failed to get the clock: %ld\n", @@ -547,6 +556,8 @@ static int cs42xx8_runtime_resume(struct device *dev) return ret; } + gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 0); + ret = regulator_bulk_enable(ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies); if (ret) { @@ -586,6 +597,8 @@ static int cs42xx8_runtime_suspend(struct device *dev) regulator_bulk_disable(ARRAY_SIZE(cs42xx8->supplies), cs42xx8->supplies); + gpiod_set_value_cansleep(cs42xx8->gpiod_reset, 1); + clk_disable_unprepare(cs42xx8->clk); return 0; |