drivers: regulator: npm1300: Add boot state detection (ec527228) · Commits · Wenxi XU / zephyr

drivers/regulator/regulator_npm1300.c

+49 −1

Original line number	Diff line number	Diff line
		@@ -48,6 +48,7 @@ enum npm1300_gpio_type {
		#define BUCK_OFFSET_SW_CTRL 0x0FU
		#define BUCK_OFFSET_VOUT_STAT 0x10U
		#define BUCK_OFFSET_CTRL0 0x15U
		#define BUCK_OFFSET_STATUS 0x34U

		/* nPM1300 ldsw register offsets */
		#define LDSW_OFFSET_EN_SET 0x00U
		@@ -61,6 +62,12 @@ enum npm1300_gpio_type {
		/* nPM1300 ship register offsets */
		#define SHIP_OFFSET_SHIP 0x02U

		#define BUCK1_ON_MASK 0x04U
		#define BUCK2_ON_MASK 0x40U

		#define LDSW1_ON_MASK 0x03U
		#define LDSW2_ON_MASK 0x0CU

		struct regulator_npm1300_pconfig {
		const struct device *mfd;
		struct gpio_dt_spec dvs_state_pins[5];
		@@ -512,16 +519,57 @@ int regulator_npm1300_common_init(const struct device *dev)
		return 0;
		}

		static int get_enabled_reg(const struct device *dev, uint8_t base, uint8_t offset, uint8_t mask,
		bool *enabled)
		{
		const struct regulator_npm1300_config *config = dev->config;
		uint8_t data;

		int ret = mfd_npm1300_reg_read(config->mfd, base, offset, &data);

		if (ret != 0) {
		return ret;
		}

		*enabled = (data & mask) != 0U;

		return 0;
		}

		static int get_enabled(const struct device dev, bool enabled)
		{
		const struct regulator_npm1300_config *config = dev->config;

		switch (config->source) {
		case NPM1300_SOURCE_BUCK1:
		return get_enabled_reg(dev, BUCK_BASE, BUCK_OFFSET_STATUS, BUCK1_ON_MASK, enabled);
		case NPM1300_SOURCE_BUCK2:
		return get_enabled_reg(dev, BUCK_BASE, BUCK_OFFSET_STATUS, BUCK2_ON_MASK, enabled);
		case NPM1300_SOURCE_LDO1:
		return get_enabled_reg(dev, LDSW_BASE, LDSW_OFFSET_STATUS, LDSW1_ON_MASK, enabled);
		case NPM1300_SOURCE_LDO2:
		return get_enabled_reg(dev, LDSW_BASE, LDSW_OFFSET_STATUS, LDSW2_ON_MASK, enabled);
		default:
		return -ENODEV;
		}
		}

		int regulator_npm1300_init(const struct device *dev)
		{
		const struct regulator_npm1300_config *config = dev->config;
		bool enabled;
		int ret = 0;

		if (!device_is_ready(config->mfd)) {
		return -ENODEV;
		}

		ret = regulator_common_init(dev, false);
		ret = get_enabled(dev, &enabled);
		if (ret < 0) {
		return ret;
		}

		ret = regulator_common_init(dev, enabled);
		if (ret < 0) {
		return ret;
		}

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