[mirror_ubuntu-zesty-kernel.git] / drivers / cpufreq / cpufreq_powersave.c

/*
 * 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);
Commit	Line	Data
1da177e4	1	/*
bb176f7d	2	* linux/drivers/cpufreq/cpufreq_powersave.c
1da177e4	3	*
bb176f7d	4	* Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
1da177e4 LT	5	*
	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	*/
	12
db701151 VK	13	#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
db701151 VK	14
1da177e4 LT	15	#include <linux/cpufreq.h>
1da177e4 LT	16	#include <linux/init.h>
5ff0a268	17	#include <linux/module.h>
1da177e4	18
e788892b	19	static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy)
1da177e4	20	{
e788892b RW	21	pr_debug("setting to %u kHz\n", policy->min);
e788892b RW	22	__cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
1da177e4	23	}
32ee8c3e	24
de1df26b	25	static struct cpufreq_governor cpufreq_gov_powersave = {
1da177e4	26	.name = "powersave",
e788892b	27	.limits = cpufreq_gov_powersave_limits,
1da177e4 LT	28	.owner = THIS_MODULE,
1da177e4 LT	29	};
1da177e4 LT	30
	31	static int __init cpufreq_gov_powersave_init(void)
	32	{
	33	return cpufreq_register_governor(&cpufreq_gov_powersave);
	34	}
	35
1da177e4 LT	36	static void __exit cpufreq_gov_powersave_exit(void)
	37	{
	38	cpufreq_unregister_governor(&cpufreq_gov_powersave);
	39	}
	40
1da177e4 LT	41	MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
	42	MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
	43	MODULE_LICENSE("GPL");
	44
30d221db	45	#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
de1df26b RW	46	struct cpufreq_governor *cpufreq_default_governor(void)
	47	{
	48	return &cpufreq_gov_powersave;
	49	}
	50
30d221db AG	51	fs_initcall(cpufreq_gov_powersave_init);
30d221db AG	52	#else
1da177e4	53	module_init(cpufreq_gov_powersave_init);
30d221db	54	#endif
1da177e4	55	module_exit(cpufreq_gov_powersave_exit);