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regulator: core: Split devres code out into a separate file
Cut down on the size of core.c a bit more and ensure that the devres versions of things don't do too much peering inside the internals of the APIs they wrap. Signed-off-by: Mark Brown <broonie@linaro.org>
This commit is contained in:
Mark Brown
parent
cee8e35594
commit
0cdfcc0f93
4 changed files with 292 additions and 252 deletions
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@ -3,7 +3,7 @@
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#
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obj-$(CONFIG_REGULATOR) += core.o dummy.o fixed-helper.o helpers.o
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obj-$(CONFIG_REGULATOR) += core.o dummy.o fixed-helper.o helpers.o devres.o
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obj-$(CONFIG_OF) += of_regulator.o
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obj-$(CONFIG_REGULATOR_FIXED_VOLTAGE) += fixed.o
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obj-$(CONFIG_REGULATOR_VIRTUAL_CONSUMER) += virtual.o
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@ -36,6 +36,7 @@
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#include <trace/events/regulator.h>
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#include "dummy.h"
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#include "internal.h"
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#define rdev_crit(rdev, fmt, ...) \
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pr_crit("%s: " fmt, rdev_get_name(rdev), ##__VA_ARGS__)
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@ -82,25 +83,6 @@ struct regulator_enable_gpio {
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unsigned int ena_gpio_invert:1;
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};
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/*
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* struct regulator
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*
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* One for each consumer device.
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*/
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struct regulator {
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struct device *dev;
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struct list_head list;
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unsigned int always_on:1;
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unsigned int bypass:1;
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int uA_load;
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int min_uV;
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int max_uV;
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char *supply_name;
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struct device_attribute dev_attr;
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struct regulator_dev *rdev;
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struct dentry *debugfs;
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};
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static int _regulator_is_enabled(struct regulator_dev *rdev);
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static int _regulator_disable(struct regulator_dev *rdev);
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static int _regulator_get_voltage(struct regulator_dev *rdev);
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@ -1334,50 +1316,6 @@ static struct regulator *_regulator_get(struct device *dev, const char *id,
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return regulator;
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}
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enum {
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NORMAL_GET,
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EXCLUSIVE_GET,
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OPTIONAL_GET,
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};
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static void devm_regulator_release(struct device *dev, void *res)
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{
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regulator_put(*(struct regulator **)res);
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}
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static struct regulator *_devm_regulator_get(struct device *dev, const char *id,
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int get_type)
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{
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struct regulator **ptr, *regulator;
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ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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switch (get_type) {
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case NORMAL_GET:
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regulator = regulator_get(dev, id);
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break;
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case EXCLUSIVE_GET:
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regulator = regulator_get_exclusive(dev, id);
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break;
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case OPTIONAL_GET:
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regulator = regulator_get_optional(dev, id);
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break;
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default:
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regulator = ERR_PTR(-EINVAL);
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}
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if (!IS_ERR(regulator)) {
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*ptr = regulator;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return regulator;
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}
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/**
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* regulator_get - lookup and obtain a reference to a regulator.
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* @dev: device for regulator "consumer"
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@ -1397,21 +1335,6 @@ struct regulator *regulator_get(struct device *dev, const char *id)
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}
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EXPORT_SYMBOL_GPL(regulator_get);
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/**
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* devm_regulator_get - Resource managed regulator_get()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
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* Managed regulator_get(). Regulators returned from this function are
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* automatically regulator_put() on driver detach. See regulator_get() for more
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* information.
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*/
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struct regulator *devm_regulator_get(struct device *dev, const char *id)
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{
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return _devm_regulator_get(dev, id, NORMAL_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get);
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/**
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* regulator_get_exclusive - obtain exclusive access to a regulator.
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* @dev: device for regulator "consumer"
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@ -1439,22 +1362,6 @@ struct regulator *regulator_get_exclusive(struct device *dev, const char *id)
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}
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EXPORT_SYMBOL_GPL(regulator_get_exclusive);
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/**
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* devm_regulator_get_exclusive - Resource managed regulator_get_exclusive()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
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* Managed regulator_get_exclusive(). Regulators returned from this function
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* are automatically regulator_put() on driver detach. See regulator_get() for
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* more information.
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*/
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struct regulator *devm_regulator_get_exclusive(struct device *dev,
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const char *id)
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{
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return _devm_regulator_get(dev, id, EXCLUSIVE_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get_exclusive);
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/**
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* regulator_get_optional - obtain optional access to a regulator.
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* @dev: device for regulator "consumer"
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@ -1484,22 +1391,6 @@ struct regulator *regulator_get_optional(struct device *dev, const char *id)
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}
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EXPORT_SYMBOL_GPL(regulator_get_optional);
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/**
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* devm_regulator_get_optional - Resource managed regulator_get_optional()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
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* Managed regulator_get_optional(). Regulators returned from this
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* function are automatically regulator_put() on driver detach. See
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* regulator_get_optional() for more information.
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*/
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struct regulator *devm_regulator_get_optional(struct device *dev,
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const char *id)
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{
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return _devm_regulator_get(dev, id, OPTIONAL_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get_optional);
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/* Locks held by regulator_put() */
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static void _regulator_put(struct regulator *regulator)
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{
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@ -1541,35 +1432,6 @@ void regulator_put(struct regulator *regulator)
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}
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EXPORT_SYMBOL_GPL(regulator_put);
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static int devm_regulator_match(struct device *dev, void *res, void *data)
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{
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struct regulator **r = res;
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if (!r || !*r) {
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WARN_ON(!r || !*r);
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return 0;
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}
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return *r == data;
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}
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/**
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* devm_regulator_put - Resource managed regulator_put()
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* @regulator: regulator to free
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*
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* Deallocate a regulator allocated with devm_regulator_get(). Normally
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* this function will not need to be called and the resource management
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* code will ensure that the resource is freed.
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*/
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void devm_regulator_put(struct regulator *regulator)
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{
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int rc;
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rc = devres_release(regulator->dev, devm_regulator_release,
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devm_regulator_match, regulator);
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if (rc != 0)
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WARN_ON(rc);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_put);
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/* Manage enable GPIO list. Same GPIO pin can be shared among regulators */
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static int regulator_ena_gpio_request(struct regulator_dev *rdev,
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const struct regulator_config *config)
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@ -2909,52 +2771,6 @@ 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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@ -3489,44 +3305,6 @@ regulator_register(const struct regulator_desc *regulator_desc,
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}
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EXPORT_SYMBOL_GPL(regulator_register);
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static void devm_rdev_release(struct device *dev, void *res)
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{
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regulator_unregister(*(struct regulator_dev **)res);
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}
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/**
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* devm_regulator_register - Resource managed regulator_register()
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* @regulator_desc: regulator to register
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* @config: runtime configuration for regulator
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*
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* Called by regulator drivers to register a regulator. Returns a
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* valid pointer to struct regulator_dev on success or an ERR_PTR() on
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* error. The regulator will automatically be released when the device
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* is unbound.
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*/
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struct regulator_dev *devm_regulator_register(struct device *dev,
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const struct regulator_desc *regulator_desc,
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const struct regulator_config *config)
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{
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struct regulator_dev **ptr, *rdev;
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ptr = devres_alloc(devm_rdev_release, sizeof(*ptr),
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GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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rdev = regulator_register(regulator_desc, config);
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if (!IS_ERR(rdev)) {
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*ptr = rdev;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return rdev;
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}
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EXPORT_SYMBOL_GPL(devm_regulator_register);
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/**
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* regulator_unregister - unregister regulator
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* @rdev: regulator to unregister
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@ -3556,34 +3334,6 @@ void regulator_unregister(struct regulator_dev *rdev)
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}
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EXPORT_SYMBOL_GPL(regulator_unregister);
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static int devm_rdev_match(struct device *dev, void *res, void *data)
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{
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struct regulator_dev **r = res;
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if (!r || !*r) {
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WARN_ON(!r || !*r);
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return 0;
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}
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return *r == data;
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}
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/**
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* devm_regulator_unregister - Resource managed regulator_unregister()
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* @regulator: regulator to free
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*
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* Unregister a regulator registered with devm_regulator_register().
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* Normally this function will not need to be called and the resource
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* management code will ensure that the resource is freed.
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*/
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void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev)
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{
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int rc;
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rc = devres_release(dev, devm_rdev_release, devm_rdev_match, rdev);
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if (rc != 0)
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WARN_ON(rc);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_unregister);
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/**
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* regulator_suspend_prepare - prepare regulators for system wide suspend
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* @state: system suspend state
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252
drivers/regulator/devres.c
Normal file
252
drivers/regulator/devres.c
Normal file
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@ -0,0 +1,252 @@
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/*
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* devres.c -- Voltage/Current Regulator framework devres implementation.
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*
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* Copyright 2013 Linaro Ltd
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/err.h>
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#include <linux/regmap.h>
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#include <linux/regulator/consumer.h>
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#include <linux/regulator/driver.h>
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#include <linux/module.h>
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#include "internal.h"
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enum {
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NORMAL_GET,
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EXCLUSIVE_GET,
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OPTIONAL_GET,
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};
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static void devm_regulator_release(struct device *dev, void *res)
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{
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regulator_put(*(struct regulator **)res);
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}
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static struct regulator *_devm_regulator_get(struct device *dev, const char *id,
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int get_type)
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{
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struct regulator **ptr, *regulator;
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ptr = devres_alloc(devm_regulator_release, sizeof(*ptr), GFP_KERNEL);
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if (!ptr)
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return ERR_PTR(-ENOMEM);
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switch (get_type) {
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case NORMAL_GET:
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regulator = regulator_get(dev, id);
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break;
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case EXCLUSIVE_GET:
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regulator = regulator_get_exclusive(dev, id);
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break;
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case OPTIONAL_GET:
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regulator = regulator_get_optional(dev, id);
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break;
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default:
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regulator = ERR_PTR(-EINVAL);
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}
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if (!IS_ERR(regulator)) {
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*ptr = regulator;
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devres_add(dev, ptr);
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} else {
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devres_free(ptr);
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}
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return regulator;
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}
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/**
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* devm_regulator_get - Resource managed regulator_get()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
|
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* Managed regulator_get(). Regulators returned from this function are
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* automatically regulator_put() on driver detach. See regulator_get() for more
|
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* information.
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*/
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struct regulator *devm_regulator_get(struct device *dev, const char *id)
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{
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return _devm_regulator_get(dev, id, NORMAL_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get);
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/**
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* devm_regulator_get_exclusive - Resource managed regulator_get_exclusive()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
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* Managed regulator_get_exclusive(). Regulators returned from this function
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* are automatically regulator_put() on driver detach. See regulator_get() for
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* more information.
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*/
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struct regulator *devm_regulator_get_exclusive(struct device *dev,
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const char *id)
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{
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return _devm_regulator_get(dev, id, EXCLUSIVE_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get_exclusive);
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/**
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* devm_regulator_get_optional - Resource managed regulator_get_optional()
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* @dev: device for regulator "consumer"
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* @id: Supply name or regulator ID.
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*
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* Managed regulator_get_optional(). Regulators returned from this
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* function are automatically regulator_put() on driver detach. See
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* regulator_get_optional() for more information.
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*/
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struct regulator *devm_regulator_get_optional(struct device *dev,
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const char *id)
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{
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return _devm_regulator_get(dev, id, OPTIONAL_GET);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_get_optional);
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static int devm_regulator_match(struct device *dev, void *res, void *data)
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{
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struct regulator **r = res;
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if (!r || !*r) {
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WARN_ON(!r || !*r);
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return 0;
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}
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return *r == data;
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}
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/**
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* devm_regulator_put - Resource managed regulator_put()
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* @regulator: regulator to free
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*
|
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* Deallocate a regulator allocated with devm_regulator_get(). Normally
|
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* this function will not need to be called and the resource management
|
||||
* code will ensure that the resource is freed.
|
||||
*/
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void devm_regulator_put(struct regulator *regulator)
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{
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int rc;
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rc = devres_release(regulator->dev, devm_regulator_release,
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devm_regulator_match, regulator);
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if (rc != 0)
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WARN_ON(rc);
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}
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EXPORT_SYMBOL_GPL(devm_regulator_put);
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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
|
||||
* @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 devm_rdev_release(struct device *dev, void *res)
|
||||
{
|
||||
regulator_unregister(*(struct regulator_dev **)res);
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_regulator_register - Resource managed regulator_register()
|
||||
* @regulator_desc: regulator to register
|
||||
* @config: runtime configuration for regulator
|
||||
*
|
||||
* Called by regulator drivers to register a regulator. Returns a
|
||||
* valid pointer to struct regulator_dev on success or an ERR_PTR() on
|
||||
* error. The regulator will automatically be released when the device
|
||||
* is unbound.
|
||||
*/
|
||||
struct regulator_dev *devm_regulator_register(struct device *dev,
|
||||
const struct regulator_desc *regulator_desc,
|
||||
const struct regulator_config *config)
|
||||
{
|
||||
struct regulator_dev **ptr, *rdev;
|
||||
|
||||
ptr = devres_alloc(devm_rdev_release, sizeof(*ptr),
|
||||
GFP_KERNEL);
|
||||
if (!ptr)
|
||||
return ERR_PTR(-ENOMEM);
|
||||
|
||||
rdev = regulator_register(regulator_desc, config);
|
||||
if (!IS_ERR(rdev)) {
|
||||
*ptr = rdev;
|
||||
devres_add(dev, ptr);
|
||||
} else {
|
||||
devres_free(ptr);
|
||||
}
|
||||
|
||||
return rdev;
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_regulator_register);
|
||||
|
||||
static int devm_rdev_match(struct device *dev, void *res, void *data)
|
||||
{
|
||||
struct regulator_dev **r = res;
|
||||
if (!r || !*r) {
|
||||
WARN_ON(!r || !*r);
|
||||
return 0;
|
||||
}
|
||||
return *r == data;
|
||||
}
|
||||
|
||||
/**
|
||||
* devm_regulator_unregister - Resource managed regulator_unregister()
|
||||
* @regulator: regulator to free
|
||||
*
|
||||
* Unregister a regulator registered with devm_regulator_register().
|
||||
* Normally this function will not need to be called and the resource
|
||||
* management code will ensure that the resource is freed.
|
||||
*/
|
||||
void devm_regulator_unregister(struct device *dev, struct regulator_dev *rdev)
|
||||
{
|
||||
int rc;
|
||||
|
||||
rc = devres_release(dev, devm_rdev_release, devm_rdev_match, rdev);
|
||||
if (rc != 0)
|
||||
WARN_ON(rc);
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(devm_regulator_unregister);
|
||||
38
drivers/regulator/internal.h
Normal file
38
drivers/regulator/internal.h
Normal file
|
|
@ -0,0 +1,38 @@
|
|||
/*
|
||||
* internal.h -- Voltage/Current Regulator framework internal code
|
||||
*
|
||||
* Copyright 2007, 2008 Wolfson Microelectronics PLC.
|
||||
* Copyright 2008 SlimLogic Ltd.
|
||||
*
|
||||
* Author: Liam Girdwood <lrg@slimlogic.co.uk>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version.
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __REGULATOR_INTERNAL_H
|
||||
#define __REGULATOR_INTERNAL_H
|
||||
|
||||
/*
|
||||
* struct regulator
|
||||
*
|
||||
* One for each consumer device.
|
||||
*/
|
||||
struct regulator {
|
||||
struct device *dev;
|
||||
struct list_head list;
|
||||
unsigned int always_on:1;
|
||||
unsigned int bypass:1;
|
||||
int uA_load;
|
||||
int min_uV;
|
||||
int max_uV;
|
||||
char *supply_name;
|
||||
struct device_attribute dev_attr;
|
||||
struct regulator_dev *rdev;
|
||||
struct dentry *debugfs;
|
||||
};
|
||||
|
||||
#endif
|
||||
Loading…
Reference in a new issue