drivers/power/supply/adp5061.c

Source file repositories/reference/linux-study-clean/drivers/power/supply/adp5061.c

File Facts

System
Linux kernel
Corpus path
drivers/power/supply/adp5061.c
Extension
.c
Size
19291 bytes
Lines
747
Domain
Driver Families
Bucket
drivers/power
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 adp5061_state {
	struct i2c_client		*client;
	struct regmap			*regmap;
	struct power_supply		*psy;
};

static int adp5061_get_array_index(const int *array, u8 size, int val)
{
	int i;

	for (i = 1; i < size; i++) {
		if (val < array[i])
			break;
	}

	return i-1;
}

static int adp5061_get_status(struct adp5061_state *st,
			      u8 *status1, u8 *status2)
{
	u8 buf[2];
	int ret;

	/* CHG_STATUS1 and CHG_STATUS2 are adjacent regs */
	ret = regmap_bulk_read(st->regmap, ADP5061_CHG_STATUS_1,
			       &buf[0], 2);
	if (ret < 0)
		return ret;

	*status1 = buf[0];
	*status2 = buf[1];

	return ret;
}

static int adp5061_get_input_current_limit(struct adp5061_state *st,
		union power_supply_propval *val)
{
	unsigned int regval;
	int mode, ret;

	ret = regmap_read(st->regmap, ADP5061_VINX_SET, &regval);
	if (ret < 0)
		return ret;

	mode = ADP5061_VINX_SET_ILIM_MODE(regval);
	val->intval = adp5061_in_current_lim[mode] * 1000;

	return ret;
}

static int adp5061_set_input_current_limit(struct adp5061_state *st, int val)
{
	int index;

	/* Convert from uA to mA */
	val /= 1000;
	index = adp5061_get_array_index(adp5061_in_current_lim,
					ARRAY_SIZE(adp5061_in_current_lim),
					val);
	if (index < 0)
		return index;

	return regmap_update_bits(st->regmap, ADP5061_VINX_SET,
				  ADP5061_VINX_SET_ILIM_MSK,
				  ADP5061_VINX_SET_ILIM_MODE(index));
}

static int adp5061_set_min_voltage(struct adp5061_state *st, int val)
{
	int index;

	/* Convert from uV to mV */
	val /= 1000;
	index = adp5061_get_array_index(adp5061_vmin,
					ARRAY_SIZE(adp5061_vmin),
					val);
	if (index < 0)
		return index;

	return regmap_update_bits(st->regmap, ADP5061_VOLTAGE_TH,
				  ADP5061_VOLTAGE_TH_VTRK_DEAD_MSK,
				  ADP5061_VOLTAGE_TH_VTRK_DEAD_MODE(index));
}

static int adp5061_get_min_voltage(struct adp5061_state *st,
				   union power_supply_propval *val)
{
	unsigned int regval;

Annotation

Implementation Notes