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| 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/lp3972.c | |
| parent | 63cee946148821bca42be10130b061c2d0f5af7e (diff) | |
| download | lwn-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.gz lwn-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.zip | |
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/lp3972.c')
| -rw-r--r-- | drivers/regulator/lp3972.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/drivers/regulator/lp3972.c b/drivers/regulator/lp3972.c index e07062fd0b42..6aa1b506fb5d 100644 --- a/drivers/regulator/lp3972.c +++ b/drivers/regulator/lp3972.c @@ -292,7 +292,8 @@ static int lp3972_ldo_get_voltage(struct regulator_dev *dev) } static int lp3972_ldo_set_voltage(struct regulator_dev *dev, - int min_uV, int max_uV) + int min_uV, int max_uV, + unsigned int *selector) { struct lp3972 *lp3972 = rdev_get_drvdata(dev); int ldo = rdev_get_id(dev) - LP3972_LDO1; @@ -313,6 +314,8 @@ static int lp3972_ldo_set_voltage(struct regulator_dev *dev, if (val > LP3972_LDO_VOL_MAX_IDX(ldo) || vol_map[val] > max_vol) return -EINVAL; + *selector = val; + shift = LP3972_LDO_VOL_CONTR_SHIFT(ldo); ret = lp3972_set_bits(lp3972, LP3972_LDO_VOL_CONTR_REG(ldo), LP3972_LDO_VOL_MASK(ldo) << shift, val << shift); @@ -416,7 +419,8 @@ static int lp3972_dcdc_get_voltage(struct regulator_dev *dev) } static int lp3972_dcdc_set_voltage(struct regulator_dev *dev, - int min_uV, int max_uV) + int min_uV, int max_uV, + unsigned int *selector) { struct lp3972 *lp3972 = rdev_get_drvdata(dev); int buck = rdev_get_id(dev) - LP3972_DCDC1; @@ -438,6 +442,8 @@ static int lp3972_dcdc_set_voltage(struct regulator_dev *dev, vol_map[val] > max_vol) return -EINVAL; + *selector = val; + ret = lp3972_set_bits(lp3972, LP3972_BUCK_VOL1_REG(buck), LP3972_BUCK_VOL_MASK, val); if (ret) |