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 |
14 | ||
1da177e4 LT |
15 | #include <linux/cpufreq.h> |
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); |
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, |
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); |
52 | #else | |
1da177e4 | 53 | module_init(cpufreq_gov_powersave_init); |
30d221db | 54 | #endif |
1da177e4 | 55 | module_exit(cpufreq_gov_powersave_exit); |