drivers/devfreq/governor.h

   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 */
  29 extern int update_devfreq(struct devfreq *devfreq);
  30
  31 extern void devfreq_monitor_start(struct devfreq *devfreq);
  32 extern void devfreq_monitor_stop(struct devfreq *devfreq);
  33 extern void devfreq_monitor_suspend(struct devfreq *devfreq);
  34 extern void devfreq_monitor_resume(struct devfreq *devfreq);
  35 extern void devfreq_interval_update(struct devfreq *devfreq,
  36                                         unsigned int *delay);
  37
  38 extern int devfreq_add_governor(struct devfreq_governor *governor);
  39 extern int devfreq_remove_governor(struct devfreq_governor *governor);
  40
  41 extern int devfreq_update_status(struct devfreq *devfreq, unsigned long freq);
  42
  43 #endif /* _GOVERNOR_H */