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regulator: helpers: Add regmap set_soft_start helper

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Add a helper function regulator_set_soft_start_regmap to allow regmap
based regulators to easily enable soft start.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax 2017-03-28 15:14:40 +01:00 committed by Mark Brown
parent d00b74613f
commit a7a453f56a
2 changed files with 26 additions and 0 deletions
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18
drivers/regulator/helpers.c
View File

@ -445,6 +445,24 @@ int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable)
}
EXPORT_SYMBOL_GPL(regulator_set_bypass_regmap);
/**
* regulator_set_soft_start_regmap - Default set_soft_start() using regmap
*
* @rdev: device to operate on.
*/
int regulator_set_soft_start_regmap(struct regulator_dev *rdev)
{
unsigned int val;
val = rdev->desc->soft_start_val_on;
if (!val)
val = rdev->desc->soft_start_mask;
return regmap_update_bits(rdev->regmap, rdev->desc->soft_start_reg,
rdev->desc->soft_start_mask, val);
}
EXPORT_SYMBOL_GPL(regulator_set_soft_start_regmap);
/**
* regulator_get_bypass_regmap - Default get_bypass() using regmap
*

8
include/linux/regulator/driver.h
View File

@ -292,6 +292,10 @@ enum regulator_type {
* set_active_discharge
* @active_discharge_reg: Register for control when using regmap
* set_active_discharge
* @soft_start_reg: Register for control when using regmap set_soft_start
* @soft_start_mask: Mask for control when using regmap set_soft_start
* @soft_start_val_on: Enabling value for control when using regmap
* set_soft_start
*
* @enable_time: Time taken for initial enable of regulator (in uS).
* @off_on_delay: guard time (in uS), before re-enabling a regulator
@ -345,6 +349,9 @@ struct regulator_desc {
unsigned int active_discharge_off;
unsigned int active_discharge_mask;
unsigned int active_discharge_reg;
unsigned int soft_start_reg;
unsigned int soft_start_mask;
unsigned int soft_start_val_on;
unsigned int enable_time;
@ -476,6 +483,7 @@ int regulator_set_voltage_time_sel(struct regulator_dev *rdev,
unsigned int new_selector);
int regulator_set_bypass_regmap(struct regulator_dev *rdev, bool enable);
int regulator_get_bypass_regmap(struct regulator_dev *rdev, bool *enable);
int regulator_set_soft_start_regmap(struct regulator_dev *rdev);
int regulator_set_active_discharge_regmap(struct regulator_dev *rdev,
bool enable);