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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/tps65023-regulator.c
parent63cee946148821bca42be10130b061c2d0f5af7e (diff)
downloadlinaro-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/tps65023-regulator.c')
-rw-r--r--drivers/regulator/tps65023-regulator.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/drivers/regulator/tps65023-regulator.c b/drivers/regulator/tps65023-regulator.c
index cd6d4fc9d74..60a7ca5409e 100644
--- a/drivers/regulator/tps65023-regulator.c
+++ b/drivers/regulator/tps65023-regulator.c
@@ -321,7 +321,8 @@ static int tps65023_dcdc_get_voltage(struct regulator_dev *dev)
}
static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV,
+ unsigned *selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int dcdc = rdev_get_id(dev);
@@ -346,6 +347,8 @@ static int tps65023_dcdc_set_voltage(struct regulator_dev *dev,
break;
}
+ *selector = vsel;
+
/* write to the register in case we found a match */
if (vsel == tps->info[dcdc]->table_len)
return -EINVAL;
@@ -371,7 +374,7 @@ static int tps65023_ldo_get_voltage(struct regulator_dev *dev)
}
static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
- int min_uV, int max_uV)
+ int min_uV, int max_uV, unsigned *selector)
{
struct tps_pmic *tps = rdev_get_drvdata(dev);
int data, vsel, ldo = rdev_get_id(dev);
@@ -396,6 +399,8 @@ static int tps65023_ldo_set_voltage(struct regulator_dev *dev,
if (vsel == tps->info[ldo]->table_len)
return -EINVAL;
+ *selector = vsel;
+
data = tps_65023_reg_read(tps, TPS65023_REG_LDO_CTRL);
if (data < 0)
return data;