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/*
* 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
#if defined(CONFIG_PM_DEVFREQ)
/* Caution: devfreq->lock must be locked before calling update_devfreq */
extern int update_devfreq(struct devfreq *devfreq);
#else /* !CONFIG_PM_DEVFREQ */
static inline int update_devfreq(struct devfreq *devfreq)
{
return -EINVAL;
}
#endif /* !CONFIG_PM_DEVFREQ */
#if defined(CONFIG_PM_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);
#else /* !CONFIG_PM_DEVFREQ */
static inline void devfreq_monitor_start(struct devfreq *devfreq)
{
}
static inline void devfreq_monitor_stop(struct devfreq *devfreq)
{
}
static inline void devfreq_monitor_suspend(struct devfreq *devfreq)
{
}
static inline void devfreq_monitor_resume(struct devfreq *devfreq)
{
}
static inline void devfreq_interval_update(struct devfreq *devfreq,
unsigned int *delay)
{
}
static inline int devfreq_add_governor(struct devfreq_governor *governor)
{
return 0;
}
static inline int devfreq_remove_governor(struct devfreq_governor *governor)
{
return 0;
}
#endif /* CONFIG_PM_DEVFREQ */
#endif /* _GOVERNOR_H */
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