return r;
}
+/**
+ * dev_pm_opp_adjust_voltage() - helper to change the voltage of an OPP
+ * @dev: device for which we do this operation
+ * @freq: OPP frequency to adjust voltage of
+ * @u_volt: new OPP target voltage
+ * @u_volt_min: new OPP min voltage
+ * @u_volt_max: new OPP max voltage
+ *
+ * Return: -EINVAL for bad pointers, -ENOMEM if no memory available for the
+ * copy operation, returns 0 if no modifcation was done OR modification was
+ * successful.
+ */
+int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+ unsigned long u_volt, unsigned long u_volt_min,
+ unsigned long u_volt_max)
+
+{
+ struct opp_table *opp_table;
+ struct dev_pm_opp *tmp_opp, *opp = ERR_PTR(-ENODEV);
+ int r = 0;
+
+ /* Find the opp_table */
+ opp_table = _find_opp_table(dev);
+ if (IS_ERR(opp_table)) {
+ r = PTR_ERR(opp_table);
+ dev_warn(dev, "%s: Device OPP not found (%d)\n", __func__, r);
+ return r;
+ }
+
+ mutex_lock(&opp_table->lock);
+
+ /* Do we have the frequency? */
+ list_for_each_entry(tmp_opp, &opp_table->opp_list, node) {
+ if (tmp_opp->rate == freq) {
+ opp = tmp_opp;
+ break;
+ }
+ }
+
+ if (IS_ERR(opp)) {
+ r = PTR_ERR(opp);
+ goto adjust_unlock;
+ }
+
+ /* Is update really needed? */
+ if (opp->supplies->u_volt == u_volt)
+ goto adjust_unlock;
+
+ opp->supplies->u_volt = u_volt;
+ opp->supplies->u_volt_min = u_volt_min;
+ opp->supplies->u_volt_max = u_volt_max;
+
+ dev_pm_opp_get(opp);
+ mutex_unlock(&opp_table->lock);
+
+ /* Notify the voltage change of the OPP */
+ blocking_notifier_call_chain(&opp_table->head, OPP_EVENT_ADJUST_VOLTAGE,
+ opp);
+
+ dev_pm_opp_put(opp);
+ goto adjust_put_table;
+
+adjust_unlock:
+ mutex_unlock(&opp_table->lock);
+adjust_put_table:
+ dev_pm_opp_put_opp_table(opp_table);
+ return r;
+}
+
/**
* dev_pm_opp_enable() - Enable a specific OPP
* @dev: device for which we do this operation
enum dev_pm_opp_event {
OPP_EVENT_ADD, OPP_EVENT_REMOVE, OPP_EVENT_ENABLE, OPP_EVENT_DISABLE,
+ OPP_EVENT_ADJUST_VOLTAGE,
};
/**
void dev_pm_opp_remove(struct device *dev, unsigned long freq);
void dev_pm_opp_remove_all_dynamic(struct device *dev);
+int dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+ unsigned long u_volt, unsigned long u_volt_min,
+ unsigned long u_volt_max);
+
int dev_pm_opp_enable(struct device *dev, unsigned long freq);
int dev_pm_opp_disable(struct device *dev, unsigned long freq);
{
}
+static inline int
+dev_pm_opp_adjust_voltage(struct device *dev, unsigned long freq,
+ unsigned long u_volt, unsigned long u_volt_min,
+ unsigned long u_volt_max)
+{
+ return 0;
+}
+
static inline int dev_pm_opp_enable(struct device *dev, unsigned long freq)
{
return 0;