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regulator: Report actual configured voltage to set_voltage()

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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>
This commit is contained in:
Mark Brown
2010-11-10 14:38:29 +00:00
committed by Liam Girdwood
parent 63cee94614
commit 3a93f2a9f4
27 changed files with 202 additions and 79 deletions
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8
drivers/regulator/wm8400-regulator.c
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@@ -67,7 +67,7 @@ static int wm8400_ldo_get_voltage(struct regulator_dev *dev)
}
static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
int min_uV, int max_uV)
int min_uV, int max_uV, unsigned *selector)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
u16 val;
@@ -93,6 +93,8 @@ static int wm8400_ldo_set_voltage(struct regulator_dev *dev,
val += 0xf;
}
*selector = val;
return wm8400_set_bits(wm8400, WM8400_LDO1_CONTROL + rdev_get_id(dev),
WM8400_LDO1_VSEL_MASK, val);
}
@@ -156,7 +158,7 @@ static int wm8400_dcdc_get_voltage(struct regulator_dev *dev)
}
static int wm8400_dcdc_set_voltage(struct regulator_dev *dev,
int min_uV, int max_uV)
int min_uV, int max_uV, unsigned *selector)
{
struct wm8400 *wm8400 = rdev_get_drvdata(dev);
u16 val;
@@ -171,6 +173,8 @@ static int wm8400_dcdc_set_voltage(struct regulator_dev *dev,
return -EINVAL;
BUG_ON(850000 + (25000 * val) < min_uV);
*selector = val;
return wm8400_set_bits(wm8400, WM8400_DCDC1_CONTROL_1 + offset,
WM8400_DC1_VSEL_MASK, val);
}