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/max8660.c b/drivers/regulator/max8660.c
index c570e6e..33f5d9a 100644
--- a/drivers/regulator/max8660.c
+++ b/drivers/regulator/max8660.c
@@ -141,7 +141,8 @@
return MAX8660_DCDC_MIN_UV + selector * MAX8660_DCDC_STEP;
}
-static int max8660_dcdc_set(struct regulator_dev *rdev, int min_uV, int max_uV)
+static int max8660_dcdc_set(struct regulator_dev *rdev, int min_uV, int max_uV,
+ unsigned int *s)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 reg, selector, bits;
@@ -154,6 +155,7 @@
selector = (min_uV - (MAX8660_DCDC_MIN_UV - MAX8660_DCDC_STEP + 1))
/ MAX8660_DCDC_STEP;
+ *s = selector;
ret = max8660_dcdc_list(rdev, selector);
if (ret < 0 || ret > max_uV)
@@ -196,7 +198,8 @@
return MAX8660_LDO5_MIN_UV + selector * MAX8660_LDO5_STEP;
}
-static int max8660_ldo5_set(struct regulator_dev *rdev, int min_uV, int max_uV)
+static int max8660_ldo5_set(struct regulator_dev *rdev, int min_uV, int max_uV,
+ unsigned int *s)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 selector;
@@ -213,6 +216,8 @@
if (ret < 0 || ret > max_uV)
return -EINVAL;
+ *s = selector;
+
ret = max8660_write(max8660, MAX8660_MDTV2, 0, selector);
if (ret)
return ret;
@@ -270,7 +275,8 @@
return MAX8660_LDO67_MIN_UV + selector * MAX8660_LDO67_STEP;
}
-static int max8660_ldo67_set(struct regulator_dev *rdev, int min_uV, int max_uV)
+static int max8660_ldo67_set(struct regulator_dev *rdev, int min_uV,
+ int max_uV, unsigned int *s)
{
struct max8660 *max8660 = rdev_get_drvdata(rdev);
u8 selector;
@@ -288,6 +294,8 @@
if (ret < 0 || ret > max_uV)
return -EINVAL;
+ *s = selector;
+
if (rdev_get_id(rdev) == MAX8660_V6)
return max8660_write(max8660, MAX8660_L12VCR, 0xf0, selector);
else