diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-11-10 14:38:29 +0000 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2011-01-12 14:32:59 +0000 |
| commit | 3a93f2a9f4d8f73d74c0e552feb68a10f778a219 (patch) | |
| tree | 8a9f503f2f061ad3fe9712b0986b0da346f4c8d2 /drivers/regulator/wm8400-regulator.c | |
| parent | 63cee946148821bca42be10130b061c2d0f5af7e (diff) | |
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>
Diffstat (limited to 'drivers/regulator/wm8400-regulator.c')
| -rw-r--r-- | drivers/regulator/wm8400-regulator.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/regulator/wm8400-regulator.c b/drivers/regulator/wm8400-regulator.c index 924c7eb29ee..b42d01cef35 100644 --- a/drivers/regulator/wm8400-regulator.c +++ b/drivers/regulator/wm8400-regulator.c @@ -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); } |