2 * linux/drivers/cpufreq/cpufreq_powersave.c
4 * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
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.
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/cpufreq.h>
16 #include <linux/init.h>
18 #define dprintk(msg...) \
19 cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "powersave", msg)
21 static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
25 case CPUFREQ_GOV_START:
26 case CPUFREQ_GOV_LIMITS:
27 dprintk("setting to %u kHz because of event %u\n",
29 __cpufreq_driver_target(policy, policy->min,
38 #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
41 struct cpufreq_governor cpufreq_gov_powersave = {
43 .governor = cpufreq_governor_powersave,
47 static int __init cpufreq_gov_powersave_init(void)
49 return cpufreq_register_governor(&cpufreq_gov_powersave);
53 static void __exit cpufreq_gov_powersave_exit(void)
55 cpufreq_unregister_governor(&cpufreq_gov_powersave);
59 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
60 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
61 MODULE_LICENSE("GPL");
63 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
64 fs_initcall(cpufreq_gov_powersave_init);
66 module_init(cpufreq_gov_powersave_init);
68 module_exit(cpufreq_gov_powersave_exit);