drivers/regulator/rt5190a-regulator.c

Source file repositories/reference/linux-study-clean/drivers/regulator/rt5190a-regulator.c

File Facts

System
Linux kernel
Corpus path
drivers/regulator/rt5190a-regulator.c
Extension
.c
Size
13068 bytes
Lines
518
Domain
Driver Families
Bucket
drivers/regulator
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct rt5190a_priv {
	struct device *dev;
	struct regmap *regmap;
	struct regulator_desc rdesc[RT5190A_MAX_IDX];
	struct regulator_dev *rdev[RT5190A_MAX_IDX];
};

static int rt5190a_get_error_flags(struct regulator_dev *rdev,
				   unsigned int *flags)
{
	struct regmap *regmap = rdev_get_regmap(rdev);
	int rid = rdev_get_id(rdev);
	unsigned int pgood_stat;
	int ret;

	ret = regmap_read(regmap, RT5190A_REG_PGSTAT, &pgood_stat);
	if (ret)
		return ret;

	if (!(pgood_stat & RT5190A_RID_BITMASK(rid)))
		*flags = REGULATOR_ERROR_FAIL;
	else
		*flags = 0;

	return 0;
}

static int rt5190a_fixed_buck_set_mode(struct regulator_dev *rdev,
				       unsigned int mode)
{
	struct regmap *regmap = rdev_get_regmap(rdev);
	int rid = rdev_get_id(rdev);
	unsigned int mask = RT5190A_RID_BITMASK(rid), val;

	switch (mode) {
	case REGULATOR_MODE_FAST:
		val = mask;
		break;
	case REGULATOR_MODE_NORMAL:
		val = 0;
		break;
	default:
		return -EINVAL;
	}

	return regmap_update_bits(regmap, RT5190A_REG_DCDCCNTL, mask, val);
}

static unsigned int rt5190a_fixed_buck_get_mode(struct regulator_dev *rdev)
{
	struct regmap *regmap = rdev_get_regmap(rdev);
	int rid = rdev_get_id(rdev);
	unsigned int val;
	int ret;

	ret = regmap_read(regmap, RT5190A_REG_DCDCCNTL, &val);
	if (ret) {
		dev_err(&rdev->dev, "Failed to get mode [%d]\n", ret);
		return ret;
	}

	if (val & RT5190A_RID_BITMASK(rid))
		return REGULATOR_MODE_FAST;

	return REGULATOR_MODE_NORMAL;
}

static const struct regulator_ops rt5190a_ranged_buck_ops = {
	.enable	= regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_voltage_sel = regulator_set_voltage_sel_regmap,
	.get_voltage_sel = regulator_get_voltage_sel_regmap,
	.list_voltage = regulator_list_voltage_linear,
	.set_active_discharge = regulator_set_active_discharge_regmap,
	.get_error_flags = rt5190a_get_error_flags,
};

static const struct regulator_ops rt5190a_fixed_buck_ops = {
	.enable	= regulator_enable_regmap,
	.disable = regulator_disable_regmap,
	.is_enabled = regulator_is_enabled_regmap,
	.set_active_discharge = regulator_set_active_discharge_regmap,
	.set_mode = rt5190a_fixed_buck_set_mode,
	.get_mode = rt5190a_fixed_buck_get_mode,
	.get_error_flags = rt5190a_get_error_flags,
};

static const struct regulator_ops rt5190a_fixed_ldo_ops = {
	.enable	= regulator_enable_regmap,

Annotation

Implementation Notes