diff options
| author | Yadwinder Singh Brar | 2013-06-29 14:51:15 +0200 |
|---|---|---|
| committer | Mark Brown | 2013-07-15 12:27:48 +0200 |
| commit | 1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea (patch) | |
| tree | 2238091c98473856a1523b13974ad98815a63156 /drivers/regulator/core.c | |
| parent | Linux 3.11-rc1 (diff) | |
| download | kernel-qcow2-linux-1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea.tar.gz kernel-qcow2-linux-1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea.tar.xz kernel-qcow2-linux-1653ccf4c52df6a4abe8ec2f33f2cb2896d129ea.zip | |
regulator: core: Add support for disabling ramp delay
Some hardwares support disabling ramp delay, so adding ramp_disable flag to
constraints. It will be used to figure out whether ramp_delay in constraints
is explicitly set to zero or its unintialized (zero by default).
And we don't need to call set_voltage_time_sel() for regulators for whom ramp
delay is disabled in constraints.
Signed-off-by: Yadwinder Singh Brar <yadi.brar@samsung.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Diffstat (limited to 'drivers/regulator/core.c')
| -rw-r--r-- | drivers/regulator/core.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 288c75abc190..6e6371c2346c 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -984,7 +984,8 @@ static int set_machine_constraints(struct regulator_dev *rdev, } } - if (rdev->constraints->ramp_delay && ops->set_ramp_delay) { + if ((rdev->constraints->ramp_delay || rdev->constraints->ramp_disable) + && ops->set_ramp_delay) { ret = ops->set_ramp_delay(rdev, rdev->constraints->ramp_delay); if (ret < 0) { rdev_err(rdev, "failed to set ramp_delay\n"); @@ -2438,7 +2439,8 @@ static int _regulator_do_set_voltage(struct regulator_dev *rdev, } /* Call set_voltage_time_sel if successfully obtained old_selector */ - if (ret == 0 && _regulator_is_enabled(rdev) && old_selector >= 0 && + if (ret == 0 && !rdev->constraints->ramp_disable && + _regulator_is_enabled(rdev) && old_selector >= 0 && old_selector != selector && rdev->desc->ops->set_voltage_time_sel) { delay = rdev->desc->ops->set_voltage_time_sel(rdev, |