projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
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 | ||
| 20 | static 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 | } | |
| 32ee8c3e | 34 | |
| 1da177e4 LT |
35 | static struct cpufreq_governor cpufreq_gov_powersave = { |
| 36 | .name = "powersave", | |
| 37 | .governor = cpufreq_governor_powersave, | |
| 38 | .owner = THIS_MODULE, | |
| 39 | }; | |
| 40 | ||
| 41 | ||
| 42 | static int __init cpufreq_gov_powersave_init(void) | |
| 43 | { | |
| 44 | return cpufreq_register_governor(&cpufreq_gov_powersave); | |
| 45 | } | |
| 46 | ||
| 47 | ||
| 48 | static void __exit cpufreq_gov_powersave_exit(void) | |
| 49 | { | |
| 50 | cpufreq_unregister_governor(&cpufreq_gov_powersave); | |
| 51 | } | |
| 52 | ||
| 53 | ||
| 54 | MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); | |
| 55 | MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); | |
| 56 | MODULE_LICENSE("GPL"); | |
| 57 | ||
| 58 | module_init(cpufreq_gov_powersave_init); | |
| 59 | module_exit(cpufreq_gov_powersave_exit); |