[PATCH 3/3] regulator: max8660: Use DIV_ROUND_UP macro to calculateselector
From: Axel Lin
Date: Fri Mar 02 2012 - 03:23:44 EST
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxx>
---
drivers/regulator/max8660.c | 16 +++++++++-------
1 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/drivers/regulator/max8660.c b/drivers/regulator/max8660.c
index a838e66..4c5b053 100644
--- a/drivers/regulator/max8660.c
+++ b/drivers/regulator/max8660.c
@@ -153,14 +153,15 @@ static int max8660_dcdc_set(struct regulator_dev *rdev, int min_uV, int max_uV,
if (max_uV < MAX8660_DCDC_MIN_UV || max_uV > MAX8660_DCDC_MAX_UV)
return -EINVAL;
- selector = (min_uV - (MAX8660_DCDC_MIN_UV - MAX8660_DCDC_STEP + 1))
- / MAX8660_DCDC_STEP;
- *s = selector;
+ selector = DIV_ROUND_UP(min_uV - MAX8660_DCDC_MIN_UV,
+ MAX8660_DCDC_STEP);
ret = max8660_dcdc_list(rdev, selector);
if (ret < 0 || ret > max_uV)
return -EINVAL;
+ *s = selector;
+
reg = (rdev_get_id(rdev) == MAX8660_V3) ? MAX8660_ADTV2 : MAX8660_SDTV2;
ret = max8660_write(max8660, reg, 0, selector);
if (ret)
@@ -210,8 +211,9 @@ static int max8660_ldo5_set(struct regulator_dev *rdev, int min_uV, int max_uV,
if (max_uV < MAX8660_LDO5_MIN_UV || max_uV > MAX8660_LDO5_MAX_UV)
return -EINVAL;
- selector = (min_uV - (MAX8660_LDO5_MIN_UV - MAX8660_LDO5_STEP + 1))
- / MAX8660_LDO5_STEP;
+ selector = DIV_ROUND_UP(min_uV - MAX8660_LDO5_MIN_UV,
+ MAX8660_LDO5_STEP);
+
ret = max8660_ldo5_list(rdev, selector);
if (ret < 0 || ret > max_uV)
return -EINVAL;
@@ -287,8 +289,8 @@ static int max8660_ldo67_set(struct regulator_dev *rdev, int min_uV,
if (max_uV < MAX8660_LDO67_MIN_UV || max_uV > MAX8660_LDO67_MAX_UV)
return -EINVAL;
- selector = (min_uV - (MAX8660_LDO67_MIN_UV - MAX8660_LDO67_STEP + 1))
- / MAX8660_LDO67_STEP;
+ selector = DIV_ROUND_UP(min_uV - MAX8660_LDO67_MIN_UV,
+ MAX8660_LDO67_STEP);
ret = max8660_ldo67_list(rdev, selector);
if (ret < 0 || ret > max_uV)
--
1.7.5.4
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