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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/cpufreq/cpufreq_powersave.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'drivers/cpufreq/cpufreq_powersave.c')
-rw-r--r--drivers/cpufreq/cpufreq_powersave.c59
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/cpufreq/cpufreq_powersave.c b/drivers/cpufreq/cpufreq_powersave.c
new file mode 100644
index 000000000000..c85edda7feb0
--- /dev/null
+++ b/drivers/cpufreq/cpufreq_powersave.c
@@ -0,0 +1,59 @@
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#define dprintk(msg...) cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "powersave", msg)
19
20static int cpufreq_governor_powersave(struct cpufreq_policy *policy,
21 unsigned int event)
22{
23 switch (event) {
24 case CPUFREQ_GOV_START:
25 case CPUFREQ_GOV_LIMITS:
26 dprintk("setting to %u kHz because of event %u\n", policy->min, event);
27 __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
28 break;
29 default:
30 break;
31 }
32 return 0;
33}
34
35static struct cpufreq_governor cpufreq_gov_powersave = {
36 .name = "powersave",
37 .governor = cpufreq_governor_powersave,
38 .owner = THIS_MODULE,
39};
40
41
42static int __init cpufreq_gov_powersave_init(void)
43{
44 return cpufreq_register_governor(&cpufreq_gov_powersave);
45}
46
47
48static void __exit cpufreq_gov_powersave_exit(void)
49{
50 cpufreq_unregister_governor(&cpufreq_gov_powersave);
51}
52
53
54MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
55MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
56MODULE_LICENSE("GPL");
57
58module_init(cpufreq_gov_powersave_init);
59module_exit(cpufreq_gov_powersave_exit);