-/**
- * regulator_set_supply - set regulator supply regulator
- * @regulator: regulator name
- * @supply: supply regulator name
- *
- * Called by platform initialisation code to set the supply regulator for this
- * regulator. This ensures that a regulators supply will also be enabled by the
- * core if it's child is enabled.
- */
-int regulator_set_supply(const char *regulator, const char *supply)
-{
- struct regulator_dev *rdev, *supply_rdev;
- int err;
-
- if (regulator == NULL || supply == NULL)
- return -EINVAL;
-
- mutex_lock(®ulator_list_mutex);
-
- list_for_each_entry(rdev, ®ulator_list, list) {
- if (!strcmp(rdev->desc->name, regulator))
- goto found_regulator;
- }
- mutex_unlock(®ulator_list_mutex);
- return -ENODEV;
-
-found_regulator:
- list_for_each_entry(supply_rdev, ®ulator_list, list) {
- if (!strcmp(supply_rdev->desc->name, supply))
- goto found_supply;
- }
- mutex_unlock(®ulator_list_mutex);
- return -ENODEV;
-
-found_supply:
- err = sysfs_create_link(&rdev->dev.kobj, &supply_rdev->dev.kobj,
- "supply");
- if (err) {
- printk(KERN_ERR
- "%s: could not add device link %s err %d\n",
- __func__, supply_rdev->dev.kobj.name, err);
- goto out;
- }
- rdev->supply = supply_rdev;
- list_add(&rdev->slist, &supply_rdev->supply_list);
-out:
- mutex_unlock(®ulator_list_mutex);
- return err;
-}
-EXPORT_SYMBOL_GPL(regulator_set_supply);
-
-/**
- * regulator_get_supply - get regulator supply regulator
- * @regulator: regulator name
- *
- * Returns the supply supply regulator name or NULL if no supply regulator
- * exists (i.e the regulator is supplied directly from USB, Line, Battery, etc)
- */
-const char *regulator_get_supply(const char *regulator)
-{
- struct regulator_dev *rdev;
-
- if (regulator == NULL)
- return NULL;
-
- mutex_lock(®ulator_list_mutex);
- list_for_each_entry(rdev, ®ulator_list, list) {
- if (!strcmp(rdev->desc->name, regulator))
- goto found;
- }
- mutex_unlock(®ulator_list_mutex);
- return NULL;
-
-found:
- mutex_unlock(®ulator_list_mutex);
- if (rdev->supply)
- return rdev->supply->desc->name;
- else
- return NULL;
-}
-EXPORT_SYMBOL_GPL(regulator_get_supply);
-
-/**
- * regulator_set_machine_constraints - sets regulator constraints
- * @regulator: regulator source
- *
- * Allows platform initialisation code to define and constrain
- * regulator circuits e.g. valid voltage/current ranges, etc. NOTE:
- * Constraints *must* be set by platform code in order for some
- * regulator operations to proceed i.e. set_voltage, set_current_limit,
- * set_mode.
- */
-int regulator_set_machine_constraints(const char *regulator_name,
- struct regulation_constraints *constraints)
-{
- struct regulator_dev *rdev;
- int ret = 0;
-
- if (regulator_name == NULL)
- return -EINVAL;
-
- mutex_lock(®ulator_list_mutex);
-
- list_for_each_entry(rdev, ®ulator_list, list) {
- if (!strcmp(regulator_name, rdev->desc->name))
- goto found;
- }
- ret = -ENODEV;
- goto out;
-
-found:
- mutex_lock(&rdev->mutex);
- rdev->constraints = constraints;
-
- /* do we need to apply the constraint voltage */
- if (rdev->constraints->apply_uV &&
- rdev->constraints->min_uV == rdev->constraints->max_uV &&
- rdev->desc->ops->set_voltage) {
- ret = rdev->desc->ops->set_voltage(rdev,
- rdev->constraints->min_uV, rdev->constraints->max_uV);
- if (ret < 0) {
- printk(KERN_ERR "%s: failed to apply %duV"
- " constraint\n", __func__,
- rdev->constraints->min_uV);
- rdev->constraints = NULL;
- goto out;
- }
- }
-
- /* are we enabled at boot time by firmware / bootloader */
- if (rdev->constraints->boot_on)
- rdev->use_count = 1;
-
- /* do we need to setup our suspend state */
- if (constraints->initial_state)
- ret = suspend_prepare(rdev, constraints->initial_state);
-
- print_constraints(rdev);
- mutex_unlock(&rdev->mutex);
-
-out:
- mutex_unlock(®ulator_list_mutex);
- return ret;
-}
-EXPORT_SYMBOL_GPL(regulator_set_machine_constraints);
-
-
-/**
- * regulator_set_device_supply: Bind a regulator to a symbolic supply
- * @regulator: regulator source
- * @dev: device the supply applies to
- * @supply: symbolic name for supply
- *
- * Allows platform initialisation code to map physical regulator
- * sources to symbolic names for supplies for use by devices. Devices
- * should use these symbolic names to request regulators, avoiding the
- * need to provide board-specific regulator names as platform data.
- */
-int regulator_set_device_supply(const char *regulator, struct device *dev,
- const char *supply)
-{
- struct regulator_map *node;
-
- if (regulator == NULL || supply == NULL)
- return -EINVAL;
-
- node = kmalloc(sizeof(struct regulator_map), GFP_KERNEL);
- if (node == NULL)
- return -ENOMEM;
-
- node->regulator = regulator;
- node->dev = dev;
- node->supply = supply;
-
- mutex_lock(®ulator_list_mutex);
- list_add(&node->list, ®ulator_map_list);
- mutex_unlock(®ulator_list_mutex);
- return 0;
-}
-EXPORT_SYMBOL_GPL(regulator_set_device_supply);
-