/* * linux/drivers/cpufreq/cpufreq_powersave.c * * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> * * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. * */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/cpufreq.h> #include <linux/init.h> #define dprintk(msg...) \ cpufreq_debug_printk(CPUFREQ_DEBUG_GOVERNOR, "powersave", msg) static int cpufreq_governor_powersave(struct cpufreq_policy *policy, unsigned int event) { switch (event) { case CPUFREQ_GOV_START: case CPUFREQ_GOV_LIMITS: dprintk("setting to %u kHz because of event %u\n", policy->min, event); __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L); break; default: break; } return 0; } #ifndef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE static #endif struct cpufreq_governor cpufreq_gov_powersave = { .name = "powersave", .governor = cpufreq_governor_powersave, .owner = THIS_MODULE, }; static int __init cpufreq_gov_powersave_init(void) { return cpufreq_register_governor(&cpufreq_gov_powersave); } static void __exit cpufreq_gov_powersave_exit(void) { cpufreq_unregister_governor(&cpufreq_gov_powersave); } MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); MODULE_LICENSE("GPL"); #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE fs_initcall(cpufreq_gov_powersave_init); #else module_init(cpufreq_gov_powersave_init); #endif module_exit(cpufreq_gov_powersave_exit);