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>
diff --git a/drivers/regulator/da903x.c b/drivers/regulator/da903x.c
index f8c4661..362e082 100644
--- a/drivers/regulator/da903x.c
+++ b/drivers/regulator/da903x.c
@@ -107,7 +107,7 @@
/* DA9030/DA9034 common operations */
static int da903x_set_ldo_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
@@ -119,6 +119,7 @@
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
+ *selector = val;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
@@ -187,7 +188,8 @@
/* DA9030 specific operations */
static int da9030_set_ldo1_15_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da903x_dev = to_da903x_dev(rdev);
@@ -200,6 +202,7 @@
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
+ *selector = val;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
val |= DA9030_LDO_UNLOCK; /* have to set UNLOCK bits */
@@ -214,7 +217,8 @@
}
static int da9030_set_ldo14_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da903x_dev = to_da903x_dev(rdev);
@@ -234,6 +238,7 @@
val = (min_uV - thresh + info->step_uV - 1) / info->step_uV;
}
+ *selector = val;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
@@ -263,7 +268,7 @@
/* DA9034 specific operations */
static int da9034_set_dvc_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
@@ -276,6 +281,7 @@
}
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
+ *selector = val;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;
@@ -289,7 +295,7 @@
}
static int da9034_set_ldo12_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct da903x_regulator_info *info = rdev_get_drvdata(rdev);
struct device *da9034_dev = to_da903x_dev(rdev);
@@ -302,6 +308,7 @@
val = (min_uV - info->min_uV + info->step_uV - 1) / info->step_uV;
val = (val >= 20) ? val - 12 : ((val > 7) ? 8 : val);
+ *selector = val;
val <<= info->vol_shift;
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;