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regulator: Provide devm_regulator_bulk_get()
Allow drivers to benefit from both the bulk APIs and managed resources simultaneously. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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2 changed files with 48 additions and 0 deletions
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@ -2463,6 +2463,52 @@ int regulator_bulk_get(struct device *dev, int num_consumers,
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}
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EXPORT_SYMBOL_GPL(regulator_bulk_get);
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/**
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* devm_regulator_bulk_get - managed get multiple regulator consumers
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*
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* @dev: Device to supply
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* @num_consumers: Number of consumers to register
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* @consumers: Configuration of consumers; clients are stored here.
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*
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* @return 0 on success, an errno on failure.
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*
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* This helper function allows drivers to get several regulator
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* consumers in one operation with management, the regulators will
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* automatically be freed when the device is unbound. If any of the
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* regulators cannot be acquired then any regulators that were
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* allocated will be freed before returning to the caller.
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*/
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int devm_regulator_bulk_get(struct device *dev, int num_consumers,
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struct regulator_bulk_data *consumers)
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{
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int i;
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int ret;
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for (i = 0; i < num_consumers; i++)
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consumers[i].consumer = NULL;
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for (i = 0; i < num_consumers; i++) {
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consumers[i].consumer = devm_regulator_get(dev,
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consumers[i].supply);
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if (IS_ERR(consumers[i].consumer)) {
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ret = PTR_ERR(consumers[i].consumer);
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dev_err(dev, "Failed to get supply '%s': %d\n",
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consumers[i].supply, ret);
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consumers[i].consumer = NULL;
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goto err;
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}
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}
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return 0;
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err:
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for (i = 0; i < num_consumers && consumers[i].consumer; i++)
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devm_regulator_put(consumers[i].consumer);
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return ret;
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}
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EXPORT_SYMBOL_GPL(devm_regulator_bulk_get);
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static void regulator_bulk_enable_async(void *data, async_cookie_t cookie)
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{
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struct regulator_bulk_data *bulk = data;
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@ -148,6 +148,8 @@ int regulator_disable_deferred(struct regulator *regulator, int ms);
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int regulator_bulk_get(struct device *dev, int num_consumers,
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struct regulator_bulk_data *consumers);
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int devm_regulator_bulk_get(struct device *dev, int num_consumers,
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struct regulator_bulk_data *consumers);
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int regulator_bulk_enable(int num_consumers,
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struct regulator_bulk_data *consumers);
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int regulator_bulk_disable(int num_consumers,
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