diff options
| author | Stephen Boyd <sboyd@codeaurora.org> | 2015-07-18 00:41:54 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-07-24 20:28:46 +0300 |
| commit | 3a003baeec246f604ed1d2e0087560d7f15edcc6 (patch) | |
| tree | 6b9e16f35e605a1b23386be578df569b599e978b /drivers/regulator | |
| parent | bc0195aad0daa2ad5b0d76cce22b167bc3435590 (diff) | |
| download | linux-3a003baeec246f604ed1d2e0087560d7f15edcc6.tar.xz | |
regulator: Add over current protection (OCP) support
Some regulators can automatically shut down when they detect an
over current event. Add an op (set_over_current_protection) and a
DT property + constraint to support this capability.
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/regulator')
| -rw-r--r-- | drivers/regulator/core.c | 9 | ||||
| -rw-r--r-- | drivers/regulator/of_regulator.c | 3 |
2 files changed, 12 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index c9f72019bd68..520413e2bca0 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -1081,6 +1081,15 @@ static int set_machine_constraints(struct regulator_dev *rdev, } } + if (rdev->constraints->over_current_protection + && ops->set_over_current_protection) { + ret = ops->set_over_current_protection(rdev); + if (ret < 0) { + rdev_err(rdev, "failed to set over current protection\n"); + goto out; + } + } + print_constraints(rdev); return 0; out: diff --git a/drivers/regulator/of_regulator.c b/drivers/regulator/of_regulator.c index b1c485b24ab2..250700c853bf 100644 --- a/drivers/regulator/of_regulator.c +++ b/drivers/regulator/of_regulator.c @@ -107,6 +107,9 @@ static void of_get_regulation_constraints(struct device_node *np, if (!of_property_read_u32(np, "regulator-system-load", &pval)) constraints->system_load = pval; + constraints->over_current_protection = of_property_read_bool(np, + "regulator-over-current-protection"); + for (i = 0; i < ARRAY_SIZE(regulator_states); i++) { switch (i) { case PM_SUSPEND_MEM: |