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power: supply: max77705_charger: add writable properties

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Add INPUT_CURRENT_LIMIT, CONSTANT_CHARGE_CURRENT properties as writeable
to be able to control input power consumption and charging speed.

Signed-off-by: Dzmitry Sankouski <dsankouski@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Dzmitry Sankouski 2025-09-18 20:06:50 +03:00 committed by Sebastian Reichel
parent 55af7b9bb6
commit baedd8be70
1 changed files with 55 additions and 1 deletions
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56
drivers/power/supply/max77705_charger.c
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@ -105,6 +105,17 @@ static int max77705_get_online(struct regmap *regmap, int *val)
return 0;
}
static int max77705_set_integer(struct max77705_charger_data *chg, enum max77705_field_idx fidx,
unsigned int clamp_min, unsigned int clamp_max,
unsigned int div, int val)
{
unsigned int regval;
regval = clamp_val(val, clamp_min, clamp_max) / div;
return regmap_field_write(chg->rfield[fidx], regval);
}
static int max77705_check_battery(struct max77705_charger_data *chg, int *val)
{
unsigned int reg_data;
@ -384,12 +395,55 @@ static int max77705_chg_get_property(struct power_supply *psy,
return 0;
}
static int max77705_set_property(struct power_supply *psy,
enum power_supply_property psp,
const union power_supply_propval *val)
{
struct max77705_charger_data *chg = power_supply_get_drvdata(psy);
int err = 0;
switch (psp) {
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
err = max77705_set_integer(chg, MAX77705_CHG_CC_LIM,
MAX77705_CURRENT_CHGIN_MIN,
MAX77705_CURRENT_CHGIN_MAX,
MAX77705_CURRENT_CHG_STEP,
val->intval);
break;
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
err = max77705_set_integer(chg, MAX77705_CHG_CHGIN_LIM,
MAX77705_CURRENT_CHGIN_MIN,
MAX77705_CURRENT_CHGIN_MAX,
MAX77705_CURRENT_CHGIN_STEP,
val->intval);
break;
default:
err = -EINVAL;
}
return err;
};
static int max77705_property_is_writeable(struct power_supply *psy,
enum power_supply_property psp)
{
switch (psp) {
case POWER_SUPPLY_PROP_CONSTANT_CHARGE_CURRENT:
case POWER_SUPPLY_PROP_INPUT_CURRENT_LIMIT:
return true;
default:
return false;
}
}
static const struct power_supply_desc max77705_charger_psy_desc = {
.name = "max77705-charger",
.type = POWER_SUPPLY_TYPE_USB,
.type = POWER_SUPPLY_TYPE_USB,
.properties = max77705_charger_props,
.property_is_writeable = max77705_property_is_writeable,
.num_properties = ARRAY_SIZE(max77705_charger_props),
.get_property = max77705_chg_get_property,
.set_property = max77705_set_property,
};
static void max77705_chgin_isr_work(struct work_struct *work)