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 <[email protected]>
Signed-off-by: Mark Brown <[email protected]>
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index 288c75a..6e6371c 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -984,7 +984,8 @@
}
}
- 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 @@
}
/* 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,
