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Subject[PATCH] regulator: tps62360: Simplify tps62360_set_voltage_time_sel implementation
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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




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