ASoC: cs42xx8: Add reset gpio handling (bfe95dfa) · Commits · 戴 / test

sound/soc/codecs/cs42xx8.c

+13 −0

Original line number	Diff line number	Diff line
		@@ -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) {
		@@ -585,6 +596,8 @@ 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;