diff options
| -rw-r--r-- | drivers/power/bq27x00_battery.c | 45 |
1 files changed, 24 insertions, 21 deletions
diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c index e9aeb533a1f0..a22124ab1e3b 100644 --- a/drivers/power/bq27x00_battery.c +++ b/drivers/power/bq27x00_battery.c @@ -248,6 +248,28 @@ static int bq27x00_battery_read_energy(struct bq27x00_device_info *di) } /* + * Return the battery temperature in tenths of degree Celsius + * Or < 0 if something fails. + */ +static int bq27x00_battery_read_temperature(struct bq27x00_device_info *di) +{ + int temp; + + temp = bq27x00_read(di, BQ27x00_REG_TEMP, false); + if (temp < 0) { + dev_err(di->dev, "error reading temperature\n"); + return temp; + } + + if (di->chip == BQ27500) + temp -= 2731; + else + temp = ((temp * 5) - 5463) / 2; + + return temp; +} + +/* * Return the battery Cycle count total * Or < 0 if something fails. */ @@ -304,7 +326,7 @@ static void bq27x00_update(struct bq27x00_device_info *di) cache.time_to_full = bq27x00_battery_read_time(di, BQ27x00_REG_TTF); cache.charge_full = bq27x00_battery_read_lmd(di); } - cache.temperature = bq27x00_read(di, BQ27x00_REG_TEMP, false); + cache.temperature = bq27x00_battery_read_temperature(di); cache.cycle_count = bq27x00_battery_read_cyct(di); /* We only have to read charge design full once */ @@ -334,25 +356,6 @@ static void bq27x00_battery_poll(struct work_struct *work) } } - -/* - * Return the battery temperature in tenths of degree Celsius - * Or < 0 if something fails. - */ -static int bq27x00_battery_temperature(struct bq27x00_device_info *di, - union power_supply_propval *val) -{ - if (di->cache.temperature < 0) - return di->cache.temperature; - - if (di->chip == BQ27500) - val->intval = di->cache.temperature - 2731; - else - val->intval = ((di->cache.temperature * 5) - 5463) / 2; - - return 0; -} - /* * Return the battery average current in µA * Note that current can be negative signed as well @@ -511,7 +514,7 @@ static int bq27x00_battery_get_property(struct power_supply *psy, ret = bq27x00_battery_capacity_level(di, val); break; case POWER_SUPPLY_PROP_TEMP: - ret = bq27x00_battery_temperature(di, val); + ret = bq27x00_simple_value(di->cache.temperature, val); break; case POWER_SUPPLY_PROP_TIME_TO_EMPTY_NOW: ret = bq27x00_simple_value(di->cache.time_to_empty, val); |