From 909a78b320b31ca9709d7ea5f602ec1bd2015192 Mon Sep 17 00:00:00 2001 From: Benson Leung Date: Sun, 27 Feb 2011 17:41:48 -0800 Subject: bq20z75: Fix time and temp units MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Acked-by: Rhyland Klein Signed-off-by: Anton Vorontsov --- drivers/power/bq20z75.c | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) (limited to 'drivers/power/bq20z75.c') 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; -- cgit v1.2.3