err = regulator_check_drms(rdev);
if (err < 0 || !rdev->desc->ops->get_optimum_mode ||
- !rdev->desc->ops->get_voltage || !rdev->desc->ops->set_mode)
+ (!rdev->desc->ops->get_voltage &&
+ !rdev->desc->ops->get_voltage_sel) ||
+ !rdev->desc->ops->set_mode)
return;
/* get output voltage */
static int _regulator_get_voltage(struct regulator_dev *rdev)
{
- /* sanity check */
+ int sel;
+
+ if (rdev->desc->ops->get_voltage_sel) {
+ sel = rdev->desc->ops->get_voltage_sel(rdev);
+ if (sel < 0)
+ return sel;
+ return rdev->desc->ops->list_voltage(rdev, sel);
+ }
if (rdev->desc->ops->get_voltage)
return rdev->desc->ops->get_voltage(rdev);
else
int status = 0;
/* some attributes need specific methods to be displayed */
- if (ops->get_voltage) {
+ if (ops->get_voltage || ops->get_voltage_sel) {
status = device_create_file(dev, &dev_attr_microvolts);
if (status < 0)
return status;
if (!init_data)
return ERR_PTR(-EINVAL);
+ /* Only one of each should be implemented */
+ WARN_ON(regulator_desc->ops->get_voltage &&
+ regulator_desc->ops->get_voltage_sel);
+
+ /* If we're using selectors we must implement list_voltage. */
+ if (regulator_desc->ops->get_voltage_sel &&
+ !regulator_desc->ops->list_voltage) {
+ return ERR_PTR(-EINVAL);
+ }
+
rdev = kzalloc(sizeof(struct regulator_dev), GFP_KERNEL);
if (rdev == NULL)
return ERR_PTR(-ENOMEM);
* @set_voltage: Set the voltage for the regulator within the range specified.
* The driver should select the voltage closest to min_uV.
* @get_voltage: Return the currently configured voltage for the regulator.
+ * @get_voltage_sel: Return the currently configured voltage selector for the
+ * regulator.
* @list_voltage: Return one of the supported voltages, in microvolts; zero
* if the selector indicates a voltage that is unusable on this system;
* or negative errno. Selectors range from zero to one less than
int (*set_voltage) (struct regulator_dev *, int min_uV, int max_uV,
unsigned *selector);
int (*get_voltage) (struct regulator_dev *);
+ int (*get_voltage_sel) (struct regulator_dev *);
/* get/set regulator current */
int (*set_current_limit) (struct regulator_dev *,