}
static DEVICE_ATTR(state, 0444, regulator_state_show, NULL);
+static ssize_t regulator_status_show(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct regulator_dev *rdev = dev_get_drvdata(dev);
+ int status;
+ char *label;
+
+ status = rdev->desc->ops->get_status(rdev);
+ if (status < 0)
+ return status;
+
+ switch (status) {
+ case REGULATOR_STATUS_OFF:
+ label = "off";
+ break;
+ case REGULATOR_STATUS_ON:
+ label = "on";
+ break;
+ case REGULATOR_STATUS_ERROR:
+ label = "error";
+ break;
+ case REGULATOR_STATUS_FAST:
+ label = "fast";
+ break;
+ case REGULATOR_STATUS_NORMAL:
+ label = "normal";
+ break;
+ case REGULATOR_STATUS_IDLE:
+ label = "idle";
+ break;
+ case REGULATOR_STATUS_STANDBY:
+ label = "standby";
+ break;
+ default:
+ return -ERANGE;
+ }
+
+ return sprintf(buf, "%s\n", label);
+}
+static DEVICE_ATTR(status, 0444, regulator_status_show, NULL);
+
static ssize_t regulator_min_uA_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
ret = rdev->desc->ops->set_voltage(rdev, min_uV, max_uV);
out:
+ _notifier_call_chain(rdev, REGULATOR_EVENT_VOLTAGE_CHANGE, NULL);
mutex_unlock(&rdev->mutex);
return ret;
}
}
EXPORT_SYMBOL_GPL(regulator_unregister_notifier);
-/* notify regulator consumers and downstream regulator consumers */
+/* notify regulator consumers and downstream regulator consumers.
+ * Note mutex must be held by caller.
+ */
static void _notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
{
struct regulator_dev *_rdev;
/* call rdev chain first */
- mutex_lock(&rdev->mutex);
blocking_notifier_call_chain(&rdev->notifier, event, NULL);
- mutex_unlock(&rdev->mutex);
/* now notify regulator we supply */
- list_for_each_entry(_rdev, &rdev->supply_list, slist)
- _notifier_call_chain(_rdev, event, data);
+ list_for_each_entry(_rdev, &rdev->supply_list, slist) {
+ mutex_lock(&_rdev->mutex);
+ _notifier_call_chain(_rdev, event, data);
+ mutex_unlock(&_rdev->mutex);
+ }
}
/**
*
* Called by regulator drivers to notify clients a regulator event has
* occurred. We also notify regulator clients downstream.
+ * Note lock must be held by caller.
*/
int regulator_notifier_call_chain(struct regulator_dev *rdev,
unsigned long event, void *data)
if (status < 0)
return status;
}
+ if (ops->get_status) {
+ status = device_create_file(dev, &dev_attr_status);
+ if (status < 0)
+ return status;
+ }
/* some attributes are type-specific */
if (rdev->desc->type == REGULATOR_CURRENT) {
* regulator_register - register regulator
* @regulator_desc: regulator to register
* @dev: struct device for the regulator
+ * @init_data: platform provided init data, passed through by driver
* @driver_data: private regulator data
*
* Called by regulator drivers to register a regulator.
* Returns 0 on success.
*/
struct regulator_dev *regulator_register(struct regulator_desc *regulator_desc,
- struct device *dev, void *driver_data)
+ struct device *dev, struct regulator_init_data *init_data,
+ void *driver_data)
{
static atomic_t regulator_no = ATOMIC_INIT(0);
struct regulator_dev *rdev;
- struct regulator_init_data *init_data = dev->platform_data;
int ret, i;
if (regulator_desc == NULL)