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regulator: core: Add ability to create a lookup alias for supply

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These patches add the ability to create an alternative device on which
a lookup for a certain supply should be conducted.

A common use-case for this would be devices that are logically
represented as a collection of drivers within Linux but are are
presented as a single device from device tree. It this case it is
necessary for each sub device to locate their supply data on the main
device.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Charles Keepax
2013-10-15 20:14:20 +01:00
committed by Mark Brown
parent 0cdfcc0f93
commit a06ccd9c37
3 changed files with 412 additions and 0 deletions
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79
include/linux/regulator/consumer.h
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@@ -146,6 +146,32 @@ struct regulator *__must_check devm_regulator_get_optional(struct device *dev,
void regulator_put(struct regulator *regulator);
void devm_regulator_put(struct regulator *regulator);
int regulator_register_supply_alias(struct device *dev, const char *id,
struct device *alias_dev,
const char *alias_id);
void regulator_unregister_supply_alias(struct device *dev, const char *id);
int regulator_bulk_register_supply_alias(struct device *dev, const char **id,
struct device *alias_dev,
const char **alias_id, int num_id);
void regulator_bulk_unregister_supply_alias(struct device *dev,
const char **id, int num_id);
int devm_regulator_register_supply_alias(struct device *dev, const char *id,
struct device *alias_dev,
const char *alias_id);
void devm_regulator_unregister_supply_alias(struct device *dev,
const char *id);
int devm_regulator_bulk_register_supply_alias(struct device *dev,
const char **id,
struct device *alias_dev,
const char **alias_id,
int num_id);
void devm_regulator_bulk_unregister_supply_alias(struct device *dev,
const char **id,
int num_id);
/* regulator output control and status */
int __must_check regulator_enable(struct regulator *regulator);
int regulator_disable(struct regulator *regulator);
@@ -250,6 +276,59 @@ static inline void devm_regulator_put(struct regulator *regulator)
{
}
static inline int regulator_register_supply_alias(struct device *dev,
const char *id,
struct device *alias_dev,
const char *alias_id)
{
return 0;
}
static inline void regulator_unregister_supply_alias(struct device *dev,
const char *id)
{
}
static inline int regulator_bulk_register_supply_alias(struct device *dev,
const char **id,
struct device *alias_dev,
const char **alias_id,
int num_id)
{
return 0;
}
static inline void regulator_bulk_unregister_supply_alias(struct device *dev,
const char **id,
int num_id)
{
}
static inline int devm_regulator_register_supply_alias(struct device *dev,
const char *id,
struct device *alias_dev,
const char *alias_id)
{
return 0;
}
static inline void devm_regulator_unregister_supply_alias(struct device *dev,
const char *id)
{
}
static inline int devm_regulator_bulk_register_supply_alias(
struct device *dev, const char **id, struct device *alias_dev,
const char **alias_id, int num_id)
{
return 0;
}
static inline void devm_regulator_bulk_unregister_supply_alias(
struct device *dev, const char **id, int num_id)
{
}
static inline int regulator_enable(struct regulator *regulator)
{
return 0;