linux/drivers/devfreq/governor.h
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   1/*
   2 * governor.h - internal header for devfreq governors.
   3 *
   4 * Copyright (C) 2011 Samsung Electronics
   5 *      MyungJoo Ham <myungjoo.ham@samsung.com>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10 *
  11 * This header is for devfreq governors in drivers/devfreq/
  12 */
  13
  14#ifndef _GOVERNOR_H
  15#define _GOVERNOR_H
  16
  17#include <linux/devfreq.h>
  18
  19#define to_devfreq(DEV) container_of((DEV), struct devfreq, dev)
  20
  21/* Devfreq events */
  22#define DEVFREQ_GOV_START                       0x1
  23#define DEVFREQ_GOV_STOP                        0x2
  24#define DEVFREQ_GOV_INTERVAL                    0x3
  25#define DEVFREQ_GOV_SUSPEND                     0x4
  26#define DEVFREQ_GOV_RESUME                      0x5
  27
  28/* Caution: devfreq->lock must be locked before calling update_devfreq */
  29extern int update_devfreq(struct devfreq *devfreq);
  30
  31extern void devfreq_monitor_start(struct devfreq *devfreq);
  32extern void devfreq_monitor_stop(struct devfreq *devfreq);
  33extern void devfreq_monitor_suspend(struct devfreq *devfreq);
  34extern void devfreq_monitor_resume(struct devfreq *devfreq);
  35extern void devfreq_interval_update(struct devfreq *devfreq,
  36                                        unsigned int *delay);
  37
  38extern int devfreq_add_governor(struct devfreq_governor *governor);
  39extern int devfreq_remove_governor(struct devfreq_governor *governor);
  40
  41#endif /* _GOVERNOR_H */
  42
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