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Commit e6e74030 authored by Mark Brown's avatar Mark Brown
Browse files

regulator: Provide devm_regulator_bulk_get() 



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

Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent d5ad34f7

drivers/regulator/core.c

+46 −0
Original line number Diff line number Diff line
@@ -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;

include/linux/regulator/consumer.h

+2 −0
Original line number Diff line number Diff line
@@ -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,