drivers/regulator/da9211-regulator.c

Source file repositories/reference/linux-study-clean/drivers/regulator/da9211-regulator.c

File Facts

System
Linux kernel
Corpus path
drivers/regulator/da9211-regulator.c
Extension
.c
Size
14027 bytes
Lines
567
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 da9211 {
	struct device *dev;
	struct regmap *regmap;
	struct da9211_pdata *pdata;
	struct regulator_dev *rdev[DA9211_MAX_REGULATORS];
	int num_regulator;
	int chip_irq;
	int chip_id;
};

static const struct regmap_range_cfg da9211_regmap_range[] = {
	{
		.selector_reg = DA9211_REG_PAGE_CON,
		.selector_mask  = DA9211_REG_PAGE_MASK,
		.selector_shift = DA9211_REG_PAGE_SHIFT,
		.window_start = 0,
		.window_len = 256,
		.range_min = 0,
		.range_max = 5*128,
	},
};

static bool da9211_volatile_reg(struct device *dev, unsigned int reg)
{
	switch (reg) {
	case DA9211_REG_STATUS_A:
	case DA9211_REG_STATUS_B:
	case DA9211_REG_EVENT_A:
	case DA9211_REG_EVENT_B:
		return true;
	}
	return false;
}

static const struct regmap_config da9211_regmap_config = {
	.reg_bits = 8,
	.val_bits = 8,
	.max_register = 5 * 128,
	.volatile_reg = da9211_volatile_reg,
	.cache_type = REGCACHE_MAPLE,
	.ranges = da9211_regmap_range,
	.num_ranges = ARRAY_SIZE(da9211_regmap_range),
};

/* Default limits measured in millivolts and milliamps */
#define DA9211_MIN_MV		300
#define DA9211_MAX_MV		1570
#define DA9211_STEP_MV		10

/* Current limits for DA9211 buck (uA) indices
 * corresponds with register values
 */
static const int da9211_current_limits[] = {
	2000000, 2200000, 2400000, 2600000, 2800000, 3000000, 3200000, 3400000,
	3600000, 3800000, 4000000, 4200000, 4400000, 4600000, 4800000, 5000000
};
/* Current limits for DA9213 buck (uA) indices
 * corresponds with register values
 */
static const int da9213_current_limits[] = {
	3000000, 3200000, 3400000, 3600000, 3800000, 4000000, 4200000, 4400000,
	4600000, 4800000, 5000000, 5200000, 5400000, 5600000, 5800000, 6000000
};
/* Current limits for DA9215 buck (uA) indices
 * corresponds with register values
 */
static const int da9215_current_limits[] = {
	4000000, 4200000, 4400000, 4600000, 4800000, 5000000, 5200000, 5400000,
	5600000, 5800000, 6000000, 6200000, 6400000, 6600000, 6800000, 7000000
};

static unsigned int da9211_map_buck_mode(unsigned int mode)
{
	switch (mode) {
	case DA9211_BUCK_MODE_SLEEP:
		return REGULATOR_MODE_STANDBY;
	case DA9211_BUCK_MODE_SYNC:
		return REGULATOR_MODE_FAST;
	case DA9211_BUCK_MODE_AUTO:
		return REGULATOR_MODE_NORMAL;
	default:
		return REGULATOR_MODE_INVALID;
	}
}

static unsigned int da9211_buck_get_mode(struct regulator_dev *rdev)
{
	int id = rdev_get_id(rdev);
	struct da9211 *chip = rdev_get_drvdata(rdev);
	unsigned int data;

Annotation

Implementation Notes