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