governor_powersave.c

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/*
 *  linux/drivers/devfreq/governor_powersave.c
 *
 *  Copyright (C) 2011 Samsung Electronics
 *  MyungJoo Ham <[email protected]>
 *
 * 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.
 */

#include <linux/devfreq.h>
#include "governor.h"

static int devfreq_powersave_func(struct devfreq *df,
                  unsigned long *freq)
{
    /*
     * target callback should be able to get ceiling value as
     * said in devfreq.h
     */
    *freq = df->min_freq;
    return 0;
}

static int powersave_init(struct devfreq *devfreq)
{
    return update_devfreq(devfreq);
}

const struct devfreq_governor devfreq_powersave = {
    .name = "powersave",
    .init = powersave_init,
    .get_target_freq = devfreq_powersave_func,
    .no_central_polling = true,
};