linux-imx

/*

 * linux/drivers/cpufreq/cpufreq_powersave.c

 *

 * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>

 *

 *

 * 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.

 *

 */

​

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

​

#include <linux/cpufreq.h>

#include <linux/init.h>

#include <linux/module.h>

​

static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy)

{

    pr_debug("setting to %u kHz\n", policy->min);

    __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);

}

​

static struct cpufreq_governor cpufreq_gov_powersave = {

    .name       = "powersave",

    .limits     = cpufreq_gov_powersave_limits,

    .owner      = THIS_MODULE,

};

​

static int __init cpufreq_gov_powersave_init(void)

{

    return cpufreq_register_governor(&cpufreq_gov_powersave);

}

​

static void __exit cpufreq_gov_powersave_exit(void)

{

    cpufreq_unregister_governor(&cpufreq_gov_powersave);

}

​

MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");

MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");

MODULE_LICENSE("GPL");

​

#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE

struct cpufreq_governor *cpufreq_default_governor(void)

{

    return &cpufreq_gov_powersave;

}

​

fs_initcall(cpufreq_gov_powersave_init);

#else

module_init(cpufreq_gov_powersave_init);

#endif

module_exit(cpufreq_gov_powersave_exit);