/*
   * governor.h - internal header for devfreq governors.
   *
   * Copyright (C) 2011 Samsung Electronics
   *	MyungJoo Ham <myungjoo.ham@samsung.com>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This header is for devfreq governors in drivers/devfreq/
   */
  
  #ifndef _GOVERNOR_H
  #define _GOVERNOR_H
  
  #include <linux/devfreq.h>
  
  #define to_devfreq(DEV)	container_of((DEV), struct devfreq, dev)
  
  /* Devfreq events */
  #define DEVFREQ_GOV_START			0x1
  #define DEVFREQ_GOV_STOP			0x2
  #define DEVFREQ_GOV_INTERVAL			0x3
  #define DEVFREQ_GOV_SUSPEND			0x4
  #define DEVFREQ_GOV_RESUME			0x5
  
  /* Caution: devfreq->lock must be locked before calling update_devfreq */
  extern int update_devfreq(struct devfreq *devfreq);
  
  extern void devfreq_monitor_start(struct devfreq *devfreq);
  extern void devfreq_monitor_stop(struct devfreq *devfreq);
  extern void devfreq_monitor_suspend(struct devfreq *devfreq);
  extern void devfreq_monitor_resume(struct devfreq *devfreq);
  extern void devfreq_interval_update(struct devfreq *devfreq,
  					unsigned int *delay);
  
  extern int devfreq_add_governor(struct devfreq_governor *governor);
  extern int devfreq_remove_governor(struct devfreq_governor *governor);
  
  #endif /* _GOVERNOR_H */