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/wm831x-ldo.c b/drivers/regulator/wm831x-ldo.c
index 9edf8f6..9594e71 100644
--- a/drivers/regulator/wm831x-ldo.c
+++ b/drivers/regulator/wm831x-ldo.c
@@ -113,7 +113,8 @@
}
static int wm831x_gp_ldo_set_voltage_int(struct regulator_dev *rdev, int reg,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
struct wm831x *wm831x = ldo->wm831x;
@@ -133,16 +134,20 @@
if (ret < min_uV || ret > max_uV)
return -EINVAL;
+ *selector = vsel;
+
return wm831x_set_bits(wm831x, reg, WM831X_LDO1_ON_VSEL_MASK, vsel);
}
static int wm831x_gp_ldo_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_LDO_ON_CONTROL;
- return wm831x_gp_ldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+ return wm831x_gp_ldo_set_voltage_int(rdev, reg, min_uV, max_uV,
+ selector);
}
static int wm831x_gp_ldo_set_suspend_voltage(struct regulator_dev *rdev,
@@ -150,8 +155,9 @@
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+ unsigned int selector;
- return wm831x_gp_ldo_set_voltage_int(rdev, reg, uV, uV);
+ return wm831x_gp_ldo_set_voltage_int(rdev, reg, uV, uV, &selector);
}
static int wm831x_gp_ldo_get_voltage(struct regulator_dev *rdev)
@@ -413,7 +419,8 @@
}
static int wm831x_aldo_set_voltage_int(struct regulator_dev *rdev, int reg,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
struct wm831x *wm831x = ldo->wm831x;
@@ -433,16 +440,19 @@
if (ret < min_uV || ret > max_uV)
return -EINVAL;
+ *selector = vsel;
+
return wm831x_set_bits(wm831x, reg, WM831X_LDO7_ON_VSEL_MASK, vsel);
}
static int wm831x_aldo_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_LDO_ON_CONTROL;
- return wm831x_aldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+ return wm831x_aldo_set_voltage_int(rdev, reg, min_uV, max_uV,
+ selector);
}
static int wm831x_aldo_set_suspend_voltage(struct regulator_dev *rdev,
@@ -450,8 +460,9 @@
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_LDO_SLEEP_CONTROL;
+ unsigned int selector;
- return wm831x_aldo_set_voltage_int(rdev, reg, uV, uV);
+ return wm831x_aldo_set_voltage_int(rdev, reg, uV, uV, &selector);
}
static int wm831x_aldo_get_voltage(struct regulator_dev *rdev)
@@ -666,7 +677,8 @@
static int wm831x_alive_ldo_set_voltage_int(struct regulator_dev *rdev,
int reg,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
struct wm831x *wm831x = ldo->wm831x;
@@ -680,16 +692,20 @@
if (ret < min_uV || ret > max_uV)
return -EINVAL;
+ *selector = vsel;
+
return wm831x_set_bits(wm831x, reg, WM831X_LDO11_ON_VSEL_MASK, vsel);
}
static int wm831x_alive_ldo_set_voltage(struct regulator_dev *rdev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_ALIVE_LDO_ON_CONTROL;
- return wm831x_alive_ldo_set_voltage_int(rdev, reg, min_uV, max_uV);
+ return wm831x_alive_ldo_set_voltage_int(rdev, reg, min_uV, max_uV,
+ selector);
}
static int wm831x_alive_ldo_set_suspend_voltage(struct regulator_dev *rdev,
@@ -697,8 +713,9 @@
{
struct wm831x_ldo *ldo = rdev_get_drvdata(rdev);
int reg = ldo->base + WM831X_ALIVE_LDO_SLEEP_CONTROL;
+ unsigned selector;
- return wm831x_alive_ldo_set_voltage_int(rdev, reg, uV, uV);
+ return wm831x_alive_ldo_set_voltage_int(rdev, reg, uV, uV, &selector);
}
static int wm831x_alive_ldo_get_voltage(struct regulator_dev *rdev)