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