regulator: core: Allow fixed enable_time to be set in the regulator_desc

Many regulators have a fixed specification for their enable time. Allow
this to be set in the regulator_desc as a number to save them having to
implement an explicit operation.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index aa82c04..6e488aa 100644 (file)
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1189,7 +1189,7 @@ overflow_err:
 static int _regulator_get_enable_time(struct regulator_dev *rdev)
 {
        if (!rdev->desc->ops->enable_time)
-               return 0;
+               return rdev->desc->enable_time;
        return rdev->desc->ops->enable_time(rdev);
 }
 

diff --git a/include/linux/regulator/driver.h b/include/linux/regulator/driver.h
index 84f999e..176bd43 100644 (file)
--- a/include/linux/regulator/driver.h
+++ b/include/linux/regulator/driver.h
@@ -180,6 +180,8 @@ enum regulator_type {
  * @vsel_mask: Mask for register bitfield used for selector
  * @enable_reg: Register for control when using regmap enable/disable ops
  * @enable_mask: Mask for control when using regmap enable/disable ops
+ *
+ * @enable_time: Time taken for initial enable of regulator (in uS).
  */
 struct regulator_desc {
        const char *name;
@@ -201,6 +203,8 @@ struct regulator_desc {
        unsigned int vsel_mask;
        unsigned int enable_reg;
        unsigned int enable_mask;
+
+       unsigned int enable_time;
 };
 
 /**