Messages in this thread Patch in this message | | | From | Baolin Wang <> | Subject | [PATCH 3/4] power: supply: sc27xx: Fix the incorrect formula when converting capacity to coulomb counter | Date | Tue, 15 Jan 2019 18:32:36 +0800 |
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We should multiply the calibrated current data (cur_1000ma_adc) when converting current capacity (mAh) to coulomb counter, which can get an accurate coulomb counter from the fuel gauge controller.
Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- drivers/power/supply/sc27xx_fuel_gauge.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/power/supply/sc27xx_fuel_gauge.c b/drivers/power/supply/sc27xx_fuel_gauge.c index 4926b8a..ea1349f 100644 --- a/drivers/power/supply/sc27xx_fuel_gauge.c +++ b/drivers/power/supply/sc27xx_fuel_gauge.c @@ -731,7 +731,7 @@ static int sc27xx_fgu_cap_to_clbcnt(struct sc27xx_fgu_data *data, int capacity) * Convert current capacity (mAh) to coulomb counter according to the * formula: 1 mAh =3.6 coulomb. */ - return DIV_ROUND_CLOSEST(cur_cap * 36, 10); + return DIV_ROUND_CLOSEST(cur_cap * 36 * data->cur_1000ma_adc, 10); } static int sc27xx_fgu_calibration(struct sc27xx_fgu_data *data) -- 1.7.9.5
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