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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-10 14:38:29 +0000
committerLiam Girdwood <lrg@slimlogic.co.uk>2011-01-12 14:32:59 +0000
commit3a93f2a9f4d8f73d74c0e552feb68a10f778a219 (patch)
tree8a9f503f2f061ad3fe9712b0986b0da346f4c8d2 /drivers/regulator/max8925-regulator.c
parent63cee946148821bca42be10130b061c2d0f5af7e (diff)
downloadlinaro-lsk-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.gz
regulator: Report actual configured voltage to set_voltage()
Change the interface used by set_voltage() to report the selected value to the regulator core in terms of a selector used by list_voltage(). This allows the regulator core to know the voltage that was chosen without having to do an explict get_voltage(), which would be much more expensive as it will generally access hardware. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
Diffstat (limited to 'drivers/regulator/max8925-regulator.c')
-rw-r--r--drivers/regulator/max8925-regulator.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/regulator/max8925-regulator.c b/drivers/regulator/max8925-regulator.c
index 552cad85ae5..8ae147549c6 100644
--- a/drivers/regulator/max8925-regulator.c
+++ b/drivers/regulator/max8925-regulator.c
@@ -55,7 +55,7 @@ static int max8925_list_voltage(struct regulator_dev *rdev, unsigned index)
}
static int max8925_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned int *selector)
{
struct max8925_regulator_info *info = rdev_get_drvdata(rdev);
unsigned char data, mask;
@@ -66,6 +66,7 @@ static int max8925_set_voltage(struct regulator_dev *rdev,
return -EINVAL;
}
data = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
+ *selector = data;
data <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;