[PATCH] power: supply: max17042_battery: Add support for the TTE_NOW prop

Geordan Neukum
2020-03-30T05:33:59Z

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>
---
drivers/power/supply/max17042_battery.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/power/supply/max17042_battery.c b/drivers/power/supply/max17042_battery.c
index 69ec4295d55d..f284547913d6 100644
--- a/drivers/power/supply/max17042_battery.c
+++ b/drivers/power/supply/max17042_battery.c
@@ -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;
}
--
2.18.1