diff options
| -rw-r--r-- | drivers/regulator/core.c | 46 | ||||
| -rw-r--r-- | include/linux/regulator/consumer.h | 2 |
2 files changed, 48 insertions, 0 deletions
diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c index 88bcb11..1432c22 100644 --- a/drivers/regulator/core.c +++ b/drivers/regulator/core.c @@ -2463,6 +2463,52 @@ err: } 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; diff --git a/include/linux/regulator/consumer.h b/include/linux/regulator/consumer.h index 60c2f99..35c4283 100644 --- a/include/linux/regulator/consumer.h +++ b/include/linux/regulator/consumer.h @@ -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, |
