Messages in this thread Patch in this message | | | Subject | [PATCH] regulator: tps62360: Simplify tps62360_set_voltage_time_sel implementation | From | Axel Lin <> | Date | Fri, 08 Jun 2012 14:35:32 +0800 |
| |
For linear mappings, we can use below equation to get the voltage difference between new_selector and old_selector:
abs(new_selector - old_selector) * rdev->desc->uV_step
Signed-off-by: Axel Lin <axel.lin@gmail.com> --- drivers/regulator/tps62360-regulator.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-)
diff --git a/drivers/regulator/tps62360-regulator.c b/drivers/regulator/tps62360-regulator.c index e534269..d044a58 100644 --- a/drivers/regulator/tps62360-regulator.c +++ b/drivers/regulator/tps62360-regulator.c @@ -179,17 +179,10 @@ static int tps62360_set_voltage_time_sel(struct regulator_dev *rdev, unsigned int old_selector, unsigned int new_selector) { struct tps62360_chip *tps = rdev_get_drvdata(rdev); - int old_uV, new_uV; - old_uV = regulator_list_voltage_linear(rdev, old_selector); - if (old_uV < 0) - return old_uV; - - new_uV = regulator_list_voltage_linear(rdev, new_selector); - if (new_uV < 0) - return new_uV; - - return DIV_ROUND_UP(abs(old_uV - new_uV), tps->change_uv_per_us); + return DIV_ROUND_UP(abs(new_selector - old_selector) * + rdev->desc->uV_step, + tps->change_uv_per_us); } static int tps62360_set_mode(struct regulator_dev *rdev, unsigned int mode) -- 1.7.9.5
| |