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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
Download Patch File Download Diff File Expand all files Collapse all files
drivers/regulator/wm8994-regulator.c
+4 -2
View File
@@ -101,7 +101,7 @@ static int wm8994_ldo1_get_voltage(struct regulator_dev *rdev)
}
static int wm8994_ldo1_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
int min_uV, int max_uV, unsigned *s)
{
struct wm8994_ldo *ldo = rdev_get_drvdata(rdev);
int selector, v;
@@ -111,6 +111,7 @@ static int wm8994_ldo1_set_voltage(struct regulator_dev *rdev,
if (v < 0 || v > max_uV)
return -EINVAL;
*s = selector;
selector <<= WM8994_LDO1_VSEL_SHIFT;
return wm8994_set_bits(ldo->wm8994, WM8994_LDO_1,
@@ -152,7 +153,7 @@ static int wm8994_ldo2_get_voltage(struct regulator_dev *rdev)
}
static int wm8994_ldo2_set_voltage(struct regulator_dev *rdev,
int min_uV, int max_uV)
int min_uV, int max_uV, unsigned *s)
{
struct wm8994_ldo *ldo = rdev_get_drvdata(rdev);
int selector, v;
@@ -162,6 +163,7 @@ static int wm8994_ldo2_set_voltage(struct regulator_dev *rdev,
if (v < 0 || v > max_uV)
return -EINVAL;
*s = selector;
selector <<= WM8994_LDO2_VSEL_SHIFT;
return wm8994_set_bits(ldo->wm8994, WM8994_LDO_2,