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power: supply: max17042_battery: Add support for the TTE_NOW prop 

The max170{42,47,50,55} family of fuel gauges all provide time-to-empty
estimation. As such, let's export this as a property.

Signed-off-by: Geordan Neukum <gneukum1@gmail.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
This commit is contained in:
Geordan Neukum 2020-03-30 01:33:55 -04:00 committed by Sebastian Reichel
parent aa86e90794
commit 21b01cc879
1 changed files with 8 additions and 0 deletions
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8
drivers/power/supply/max17042_battery.c
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@ -87,6 +87,7 @@ static enum power_supply_property max17042_battery_props[] = {
POWER_SUPPLY_PROP_SCOPE,
POWER_SUPPLY_PROP_CURRENT_NOW,
POWER_SUPPLY_PROP_CURRENT_AVG,
POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
};
static int max17042_get_temperature(struct max17042_chip *chip, int *temp)
@ -411,6 +412,13 @@ static int max17042_get_property(struct power_supply *psy,
return -EINVAL;
}
break;
case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
ret = regmap_read(map, MAX17042_TTE, &data);
if (ret < 0)
return ret;
val->intval = data * 5625 / 1000;
break;
default:
return -EINVAL;
}