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/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c
index ecd99f5..47ea999 100644
--- a/drivers/regulator/mc13783-regulator.c
+++ b/drivers/regulator/mc13783-regulator.c
@@ -373,7 +373,8 @@
}
static int mc13783_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev);
int value, id = rdev_get_id(rdev);
@@ -388,6 +389,8 @@
if (value < 0)
return value;
+ *selector = value;
+
mc13783_lock(priv->mc13783);
ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg,
mc13783_regulators[id].vsel_mask,
@@ -433,13 +436,16 @@
};
static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned int *selector)
{
int id = rdev_get_id(rdev);
dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n",
__func__, id, min_uV, max_uV);
+ *selector = 0;
+
if (min_uV >= mc13783_regulators[id].voltages[0] &&
max_uV <= mc13783_regulators[id].voltages[0])
return 0;