bq20z75: Fix time and temp units

Corrected temperature and time to empty/full conversions.
Temperature is in 0.1°C, time is in seconds.

Corrected units in comment. "Convert to µWh."

Signed-off-by: Benson Leung <bleung@chromium.org>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Anton Vorontsov <cbouatmailru@gmail.com>

1 files changed, 12 insertions, 6 deletions

diff --git a/drivers/power/bq20z75.c b/drivers/power/bq20z75.c
index 5615c92bef66..506585e31a5b 100644
--- a/drivers/power/bq20z75.c
+++ b/drivers/power/bq20z75.c
@@ -318,12 +318,15 @@ static void  bq20z75_unit_adjustment(struct i2c_client *client,
 {
 #define BASE_UNIT_CONVERSION            1000
 #define BATTERY_MODE_CAP_MULT_WATT      (10 * BASE_UNIT_CONVERSION)
-#define TIME_UNIT_CONVERSION            600
-#define TEMP_KELVIN_TO_CELCIUS          2731
+#define TIME_UNIT_CONVERSION            60
+#define TEMP_KELVIN_TO_CELSIUS          2731
         switch (psp) {
         case POWER_SUPPLY_PROP_ENERGY_NOW:
         case POWER_SUPPLY_PROP_ENERGY_FULL:
         case POWER_SUPPLY_PROP_ENERGY_FULL_DESIGN:
+                /* bq20z75 provides energy in units of 10mWh.
+                 * Convert to µWh
+                 */
                 val->intval *= BATTERY_MODE_CAP_MULT_WATT;
                 break;
 
@@ -337,14 +340,17 @@ static void  bq20z75_unit_adjustment(struct i2c_client *client,
                 break;
 
         case POWER_SUPPLY_PROP_TEMP:
-                /* bq20z75 provides battery tempreture in 0.1°K
-                 * so convert it to 0.1°C */
-                val->intval -= TEMP_KELVIN_TO_CELCIUS;
-                val->intval *= 10;
+                /* bq20z75 provides battery temperature in 0.1K
+                 * so convert it to 0.1°C
+                 */
+                val->intval -= TEMP_KELVIN_TO_CELSIUS;
                 break;
 
         case POWER_SUPPLY_PROP_TIME_TO_EMPTY_AVG:
         case POWER_SUPPLY_PROP_TIME_TO_FULL_AVG:
+                /* bq20z75 provides time to empty and time to full in minutes.
+                 * Convert to seconds
+                 */
                 val->intval *= TIME_UNIT_CONVERSION;
                 break;