diff options
| author | Linus Walleij <linus.walleij@linaro.org> | 2021-07-13 17:27:05 +0200 |
|---|---|---|
| committer | Sebastian Reichel <sebastian.reichel@collabora.com> | 2021-07-16 15:14:30 +0200 |
| commit | f820547446ed05edee2944ebe19ea6a3104434f4 (patch) | |
| tree | 3418764abfa635b28f6a9878ea850c67a7d1ad39 /drivers/power/supply/ab8500_btemp.c | |
| parent | e73f0f0ee7541171d89f2e2491130c7771ba58d3 (diff) | |
power: supply: ab8500: Use library interpolation
The kernel already has a static inline for linear interpolation
so use that instead of rolling our own.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Diffstat (limited to 'drivers/power/supply/ab8500_btemp.c')
| -rw-r--r-- | drivers/power/supply/ab8500_btemp.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/power/supply/ab8500_btemp.c b/drivers/power/supply/ab8500_btemp.c index dbdcff32f353..24958b935d39 100644 --- a/drivers/power/supply/ab8500_btemp.c +++ b/drivers/power/supply/ab8500_btemp.c @@ -27,6 +27,7 @@ #include <linux/mfd/abx500.h> #include <linux/mfd/abx500/ab8500.h> #include <linux/iio/consumer.h> +#include <linux/fixp-arith.h> #include "ab8500-bm.h" @@ -437,8 +438,9 @@ static int ab8500_btemp_res_to_temp(struct ab8500_btemp *di, i++; } - return tbl[i].temp + ((tbl[i + 1].temp - tbl[i].temp) * - (res - tbl[i].resist)) / (tbl[i + 1].resist - tbl[i].resist); + return fixp_linear_interpolate(tbl[i].resist, tbl[i].temp, + tbl[i + 1].resist, tbl[i + 1].temp, + res); } /** |