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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/max8649.c | |
| parent | 63cee946148821bca42be10130b061c2d0f5af7e (diff) | |
| download | linux-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.gz linux-3a93f2a9f4d8f73d74c0e552feb68a10f778a219.tar.bz2 linux-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/max8649.c')
| -rw-r--r-- | drivers/regulator/max8649.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/regulator/max8649.c b/drivers/regulator/max8649.c index 6b60a9c0366b..30eb9e54f7ec 100644 --- a/drivers/regulator/max8649.c +++ b/drivers/regulator/max8649.c @@ -155,7 +155,7 @@ static int max8649_get_voltage(struct regulator_dev *rdev) } static int max8649_set_voltage(struct regulator_dev *rdev, - int min_uV, int max_uV) + int min_uV, int max_uV, unsigned *selector) { struct max8649_regulator_info *info = rdev_get_drvdata(rdev); unsigned char data, mask; @@ -168,6 +168,7 @@ static int max8649_set_voltage(struct regulator_dev *rdev, data = (min_uV - MAX8649_DCDC_VMIN + MAX8649_DCDC_STEP - 1) / MAX8649_DCDC_STEP; mask = MAX8649_VOL_MASK; + *selector = data & mask; return max8649_set_bits(info->i2c, info->vol_reg, mask, data); } |