[CPUFREQ] use dynamic debug instead of custom infrastructure
[linux-2.6.git] / drivers / cpufreq / cpufreq_powersave.c
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 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/cpufreq.h>
16 #include <linux/init.h>
17
18 static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
19                                         unsigned int event)
20 {
21         switch (event) {
22         case CPUFREQ_GOV_START:
23         case CPUFREQ_GOV_LIMITS:
24                 pr_debug("setting to %u kHz because of event %u\n",
25                                                         policy->min, event);
26                 __cpufreq_driver_target(policy, policy->min,
27                                                 CPUFREQ_RELATION_L);
28                 break;
29         default:
30                 break;
31         }
32         return 0;
33 }
34
35 #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
36 static
37 #endif
38 struct cpufreq_governor cpufreq_gov_powersave = {
39         .name           = "powersave",
40         .governor       = cpufreq_governor_powersave,
41         .owner          = THIS_MODULE,
42 };
43
44 static int __init cpufreq_gov_powersave_init(void)
45 {
46         return cpufreq_register_governor(&cpufreq_gov_powersave);
47 }
48
49
50 static void __exit cpufreq_gov_powersave_exit(void)
51 {
52         cpufreq_unregister_governor(&cpufreq_gov_powersave);
53 }
54
55
56 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
57 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
58 MODULE_LICENSE("GPL");
59
60 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
61 fs_initcall(cpufreq_gov_powersave_init);
62 #else
63 module_init(cpufreq_gov_powersave_init);
64 #endif
65 module_exit(cpufreq_gov_powersave_exit);