+ * This struct describes regulator operations which can be implemented by
+ * regulator chip drivers.
+ *
+ * @enable: Enable the regulator.
+ * @disable: Disable the regulator.
+ * @is_enabled: Return 1 if the reguator is enabled, 0 otherwise.
+ *
+ * @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.
+ *
+ * @set_current: Set the current for the regulator within the range specified.
+ * The driver should select the current closest to min_uA.
+ * @get_current: Return the currently configured current for the regulator.
+ *
+ * @set_current_limit: Configure a limit for a current-limited regulator.
+ * @get_current_limit: Get the limit for a current-limited regulator.
+ *
+ * @set_mode: Set the operating mode for the regulator.
+ * @get_mode: Get the current operating mode for the regulator.
+ * @get_optimum_mode: Get the most efficient operating mode for the regulator
+ * when running with the specified parameters.
+ *
+ * @set_suspend_voltage: Set the voltage for the regulator when the system
+ * is suspended.
+ * @set_suspend_enable: Mark the regulator as enabled when the system is
+ * suspended.
+ * @set_suspend_disable: Mark the regulator as disabled when the system is
+ * suspended.
+ * @set_suspend_mode: Set the operating mode for the regulator when the
+ * system is suspended.