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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>
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@ -87,6 +87,7 @@ static enum power_supply_property max17042_battery_props[] = {
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POWER_SUPPLY_PROP_SCOPE,
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POWER_SUPPLY_PROP_CURRENT_NOW,
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POWER_SUPPLY_PROP_CURRENT_AVG,
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POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW,
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};
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static int max17042_get_temperature(struct max17042_chip *chip, int *temp)
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@ -411,6 +412,13 @@ static int max17042_get_property(struct power_supply *psy,
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return -EINVAL;
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}
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break;
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case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW:
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ret = regmap_read(map, MAX17042_TTE, &data);
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if (ret < 0)
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return ret;
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val->intval = data * 5625 / 1000;
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break;
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default:
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return -EINVAL;
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}
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