diff options
| author | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2010-11-10 17:38:29 +0300 |
|---|---|---|
| committer | Liam Girdwood <lrg@slimlogic.co.uk> | 2011-01-12 17:32:59 +0300 |
| commit | 3a93f2a9f4d8f73d74c0e552feb68a10f778a219 (patch) | |
| tree | 8a9f503f2f061ad3fe9712b0986b0da346f4c8d2 /drivers/regulator/tps6586x-regulator.c | |
| parent | 63cee946148821bca42be10130b061c2d0f5af7e (diff) | |
| download | linux-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.xz | |
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/tps6586x-regulator.c')
| -rw-r--r-- | drivers/regulator/tps6586x-regulator.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c index 6d20b0454a1d..bb04a75a4c98 100644 --- a/drivers/regulator/tps6586x-regulator.c +++ b/drivers/regulator/tps6586x-regulator.c @@ -85,7 +85,8 @@ static int tps6586x_ldo_list_voltage(struct regulator_dev *rdev, static int __tps6586x_ldo_set_voltage(struct device *parent, struct tps6586x_regulator *ri, - int min_uV, int max_uV) + int min_uV, int max_uV, + unsigned *selector) { int val, uV; uint8_t mask; @@ -100,6 +101,8 @@ static int __tps6586x_ldo_set_voltage(struct device *parent, /* use the first in-range value */ if (min_uV <= uV && uV <= max_uV) { + *selector = val; + val <<= ri->volt_shift; mask = ((1 << ri->volt_nbits) - 1) << ri->volt_shift; @@ -111,12 +114,13 @@ static int __tps6586x_ldo_set_voltage(struct device *parent, } static int tps6586x_ldo_set_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) + int min_uV, int max_uV, unsigned *selector) { struct tps6586x_regulator *ri = rdev_get_drvdata(rdev); struct device *parent = to_tps6586x_dev(rdev); - return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV); + return __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV, + selector); } static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev) @@ -140,13 +144,14 @@ static int tps6586x_ldo_get_voltage(struct regulator_dev *rdev) } static int tps6586x_dvm_set_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) + int min_uV, int max_uV, unsigned *selector) { struct tps6586x_regulator *ri = rdev_get_drvdata(rdev); struct device *parent = to_tps6586x_dev(rdev); int ret; - ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV); + ret = __tps6586x_ldo_set_voltage(parent, ri, min_uV, max_uV, + selector); if (ret) return ret; |