bq27x00_battery: Cache temperature value in converted unit

Signed-off-by: Pali Rohár <pali.rohar@gmail.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

diff --git a/drivers/power/bq27x00_battery.c b/drivers/power/bq27x00_battery.c
index e9aeb53..a22124a 100644 (file)
--- a/drivers/power/bq27x00_battery.c
+++ b/drivers/power/bq27x00_battery.c
@@ -247,6 +247,28 @@ static int bq27x00_battery_read_energy(struct bq27x00_device_info *di)
        return ae;
 }
 
+/*
+ * 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);