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authorMark Brown <broonie@opensource.wolfsonmicro.com>2010-11-10 14:38:29 +0000
committerLiam Girdwood <lrg@slimlogic.co.uk>2011-01-12 14:32:59 +0000
commit3a93f2a9f4d8f73d74c0e552feb68a10f778a219 (patch)
tree8a9f503f2f061ad3fe9712b0986b0da346f4c8d2 /drivers/regulator/tps6586x-regulator.c
parent63cee946148821bca42be10130b061c2d0f5af7e (diff)
downloadvexpress-lsk-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.gz
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.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/regulator/tps6586x-regulator.c b/drivers/regulator/tps6586x-regulator.c
index 6d20b0454a1..bb04a75a4c9 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;