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>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 4db9fbe4889d..45932228cbf5 100644
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -148,6 +148,7 @@ struct regulator_ops {
         int (*get_current_limit) (struct regulator_dev *);
 
         int (*set_input_current_limit) (struct regulator_dev *, int lim_uA);
+        int (*set_over_current_protection) (struct regulator_dev *);
 
         /* enable/disable regulator */
         int (*enable) (struct regulator_dev *);
diff --git a/include/linux/regulator/machine.h b/include/linux/regulator/machine.h
index b11be1260129..a1067d0b3991 100644
--- a/include/linux/regulator/machine.h
+++ b/include/linux/regulator/machine.h
@@ -147,6 +147,7 @@ struct regulation_constraints {
         unsigned ramp_disable:1; /* disable ramp delay */
         unsigned soft_start:1;  /* ramp voltage slowly */
         unsigned pull_down:1;   /* pull down resistor when regulator off */
+        unsigned over_current_protection:1; /* auto disable on over current */
 };
 
 /**