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regulator: Add soft start support

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Some regulators support a "soft start" feature where the voltage
ramps up slowly when the regulator is enabled. Add an op
(set_soft_start) and a DT property + constraint to support this.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Stephen Boyd
2015-06-11 17:37:05 -07:00
committed by Mark Brown
parent 23c779b9f9
commit 57f66b7886
5 changed files with 15 additions and 0 deletions
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8
drivers/regulator/core.c
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@ -1059,6 +1059,14 @@ static int set_machine_constraints(struct regulator_dev *rdev,
}
}
if (rdev->constraints->soft_start && ops->set_soft_start) {
ret = ops->set_soft_start(rdev);
if (ret < 0) {
rdev_err(rdev, "failed to set soft start\n");
goto out;
}
}
print_constraints(rdev);
return 0;
out: