1 // SPDX-License-Identifier: GPL-2.0-only
3 * linux/drivers/cpufreq/cpufreq_powersave.c
5 * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
10 #include <linux/cpufreq.h>
11 #include <linux/init.h>
12 #include <linux/module.h>
14 static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy)
16 pr_debug("setting to %u kHz\n", policy->min);
17 __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
20 static struct cpufreq_governor cpufreq_gov_powersave = {
22 .limits = cpufreq_gov_powersave_limits,
26 static int __init cpufreq_gov_powersave_init(void)
28 return cpufreq_register_governor(&cpufreq_gov_powersave);
31 static void __exit cpufreq_gov_powersave_exit(void)
33 cpufreq_unregister_governor(&cpufreq_gov_powersave);
36 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
37 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
38 MODULE_LICENSE("GPL");
40 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
41 struct cpufreq_governor *cpufreq_default_governor(void)
43 return &cpufreq_gov_powersave;
46 fs_initcall(cpufreq_gov_powersave_init);
48 module_init(cpufreq_gov_powersave_init);
50 module_exit(cpufreq_gov_powersave_exit);