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Code Issues Releases Wiki Activity

regulator: Provide devm_regulator_bulk_get()

Browse source 
Allow drivers to benefit from both the bulk APIs and managed resources
simultaneously.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-01-20 20:10:08 +00:00
parent d5ad34f7cb
commit e6e740304a
2 changed files with 48 additions and 0 deletions
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46
drivers/regulator/core.c
View file

@ -2463,6 +2463,52 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
}
EXPORT_SYMBOL_GPL(regulator_bulk_get);
/**
* devm_regulator_bulk_get - managed get multiple regulator consumers
*
* @dev: Device to supply
* @num_consumers: Number of consumers to register
* @consumers: Configuration of consumers; clients are stored here.
*
* @return 0 on success, an errno on failure.
*
* This helper function allows drivers to get several regulator
* consumers in one operation with management, the regulators will
* automatically be freed when the device is unbound. If any of the
* regulators cannot be acquired then any regulators that were
* allocated will be freed before returning to the caller.
*/
int devm_regulator_bulk_get(struct device *dev, int num_consumers,
struct regulator_bulk_data *consumers)
{
int i;
int ret;
for (i = 0; i < num_consumers; i++)
consumers[i].consumer = NULL;
for (i = 0; i < num_consumers; i++) {
consumers[i].consumer = devm_regulator_get(dev,
consumers[i].supply);
if (IS_ERR(consumers[i].consumer)) {
ret = PTR_ERR(consumers[i].consumer);
dev_err(dev, "Failed to get supply '%s': %d\n",
consumers[i].supply, ret);
consumers[i].consumer = NULL;
goto err;
}
}
return 0;
err:
for (i = 0; i < num_consumers && consumers[i].consumer; i++)
devm_regulator_put(consumers[i].consumer);
return ret;
}
EXPORT_SYMBOL_GPL(devm_regulator_bulk_get);
static void regulator_bulk_enable_async(void *data, async_cookie_t cookie)
{
struct regulator_bulk_data *bulk = data;

2
include/linux/regulator/consumer.h
View file

@ -148,6 +148,8 @@ int regulator_disable_deferred(struct regulator *regulator, int ms);
int regulator_bulk_get(struct device *dev, int num_consumers,
struct regulator_bulk_data *consumers);
int devm_regulator_bulk_get(struct device *dev, int num_consumers,
struct regulator_bulk_data *consumers);
int regulator_bulk_enable(int num_consumers,
struct regulator_bulk_data *consumers);
int regulator_bulk_disable(int num_consumers,