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authorAxel Lin <axel.lin@gmail.com>2012-07-17 00:10:42 +0800
committerMark Brown <broonie@opensource.wolfsonmicro.com>2012-08-07 18:10:26 +0100
commit3e2a928472daa839e7be0d71c1d8320334ea76e1 (patch)
tree0ec66e229c0572909758b24ac5b00b469501b61b /drivers/regulator
parent7f852e0584f67654060f7814149744a1b7250480 (diff)
regulator: anatop: Fix wrong mask used in anatop_get_voltage_sel
The mask used in anatop_get_voltage_sel does not match the mask used in anatop_set_voltage_sel. We need to do left shift anatop_reg->vol_bit_shift bits for the correct mask. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/regulator')
-rw-r--r--drivers/regulator/anatop-regulator.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/regulator/anatop-regulator.c b/drivers/regulator/anatop-regulator.c
index e9c2085f9dfb..ce0fe72a428e 100644
--- a/drivers/regulator/anatop-regulator.c
+++ b/drivers/regulator/anatop-regulator.c
@@ -64,14 +64,15 @@ static int anatop_set_voltage_sel(struct regulator_dev *reg, unsigned selector)
static int anatop_get_voltage_sel(struct regulator_dev *reg)
{
struct anatop_regulator *anatop_reg = rdev_get_drvdata(reg);
- u32 val;
+ u32 val, mask;
if (!anatop_reg->control_reg)
return -ENOTSUPP;
val = anatop_read_reg(anatop_reg->mfd, anatop_reg->control_reg);
- val = (val & ((1 << anatop_reg->vol_bit_width) - 1)) >>
+ mask = ((1 << anatop_reg->vol_bit_width) - 1) <<
anatop_reg->vol_bit_shift;
+ val = (val & mask) >> anatop_reg->vol_bit_shift;
return val - anatop_reg->min_bit_val;
}