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/88pm8607.c b/drivers/regulator/88pm8607.c
index 2ce2eb7..dd63084 100644
--- a/drivers/regulator/88pm8607.c
+++ b/drivers/regulator/88pm8607.c
@@ -249,7 +249,7 @@
}
static int pm8607_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct pm8607_regulator_info *info = rdev_get_drvdata(rdev);
uint8_t val, mask;
@@ -263,6 +263,7 @@
ret = choose_voltage(rdev, min_uV, max_uV);
if (ret < 0)
return -EINVAL;
+ *selector = ret;
val = (uint8_t)(ret << info->vol_shift);
mask = ((1 << info->vol_nbits) - 1) << info->vol_shift;