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/mc13783-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/mc13783-regulator.c')
| -rw-r--r-- | drivers/regulator/mc13783-regulator.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/regulator/mc13783-regulator.c b/drivers/regulator/mc13783-regulator.c index ecd99f59dba..47ea9994979 100644 --- a/drivers/regulator/mc13783-regulator.c +++ b/drivers/regulator/mc13783-regulator.c @@ -373,7 +373,8 @@ static int mc13783_get_best_voltage_index(struct regulator_dev *rdev, } static int mc13783_regulator_set_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) + int min_uV, int max_uV, + unsigned *selector) { struct mc13783_regulator_priv *priv = rdev_get_drvdata(rdev); int value, id = rdev_get_id(rdev); @@ -388,6 +389,8 @@ static int mc13783_regulator_set_voltage(struct regulator_dev *rdev, if (value < 0) return value; + *selector = value; + mc13783_lock(priv->mc13783); ret = mc13783_reg_rmw(priv->mc13783, mc13783_regulators[id].vsel_reg, mc13783_regulators[id].vsel_mask, @@ -433,13 +436,16 @@ static struct regulator_ops mc13783_regulator_ops = { }; static int mc13783_fixed_regulator_set_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) + int min_uV, int max_uV, + unsigned int *selector) { int id = rdev_get_id(rdev); dev_dbg(rdev_get_dev(rdev), "%s id: %d min_uV: %d max_uV: %d\n", __func__, id, min_uV, max_uV); + *selector = 0; + if (min_uV >= mc13783_regulators[id].voltages[0] && max_uV <= mc13783_regulators[id].voltages[0]) return 0; |