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power: supply: axp20x_battery: add support for AXP813 

The X-Powers AXP813 PMIC has got some slight differences from
AXP20X/AXP22X PMICs:
 - the maximum voltage supplied by the PMIC is 4.35 instead of 4.36/4.24
 for AXP20X/AXP22X,
 - the constant charge current formula is different,

It also has a bit to tell whether the battery percentage returned by the
PMIC is valid.

Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
This commit is contained in:
Quentin Schulz 2018-02-28 11:36:00 +01:00 committed by Sebastian Reichel
parent 99cdb0a9f5
commit 6ff653e3e8
1 changed files with 42 additions and 0 deletions
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42
drivers/power/supply/axp20x_battery.c
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@ -49,6 +49,8 @@
#define AXP22X_CHRG_CTRL1_TGT_4_22V (1 << 5)
#define AXP22X_CHRG_CTRL1_TGT_4_24V (3 << 5)
#define AXP813_CHRG_CTRL1_TGT_4_35V (3 << 5)
#define AXP20X_CHRG_CTRL1_TGT_CURR GENMASK(3, 0)
#define AXP20X_V_OFF_MASK GENMASK(2, 0)
@ -133,6 +135,35 @@ static int axp22x_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
return 0;
}
static int axp813_battery_get_max_voltage(struct axp20x_batt_ps *axp20x_batt,
int *val)
{
int ret, reg;
ret = regmap_read(axp20x_batt->regmap, AXP20X_CHRG_CTRL1, &reg);
if (ret)
return ret;
switch (reg & AXP20X_CHRG_CTRL1_TGT_VOLT) {
case AXP20X_CHRG_CTRL1_TGT_4_1V:
*val = 4100000;
break;
case AXP20X_CHRG_CTRL1_TGT_4_15V:
*val = 4150000;
break;
case AXP20X_CHRG_CTRL1_TGT_4_2V:
*val = 4200000;
break;
case AXP813_CHRG_CTRL1_TGT_4_35V:
*val = 4350000;
break;
default:
return -EINVAL;
}
return 0;
}
static int axp20x_get_constant_charge_current(struct axp20x_batt_ps *axp,
int *val)
{
@ -491,6 +522,14 @@ static const struct axp_data axp221_data = {
.set_max_voltage = axp22x_battery_set_max_voltage,
};
static const struct axp_data axp813_data = {
.ccc_scale = 200000,
.ccc_offset = 200000,
.has_fg_valid = true,
.get_max_voltage = axp813_battery_get_max_voltage,
.set_max_voltage = axp20x_battery_set_max_voltage,
};
static const struct of_device_id axp20x_battery_ps_id[] = {
{
.compatible = "x-powers,axp209-battery-power-supply",
@ -498,6 +537,9 @@ static const struct of_device_id axp20x_battery_ps_id[] = {
}, {
.compatible = "x-powers,axp221-battery-power-supply",
.data = (void *)&axp221_data,
}, {
.compatible = "x-powers,axp813-battery-power-supply",
.data = (void *)&axp813_data,
}, { /* sentinel */ },
};
MODULE_DEVICE_TABLE(of, axp20x_battery_ps_id);