drivers/cpufreq/cpufreq_powersave.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * linux/drivers/cpufreq/cpufreq_powersave.c
0004  *
0005  * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de>
0006  */
0007
0008 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
0009
0010 #include <linux/cpufreq.h>
0011 #include <linux/init.h>
0012 #include <linux/module.h>
0013
0014 static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy)
0015 {
0016     pr_debug("setting to %u kHz\n", policy->min);
0017     __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L);
0018 }
0019
0020 static struct cpufreq_governor cpufreq_gov_powersave = {
0021     .name       = "powersave",
0022     .limits     = cpufreq_gov_powersave_limits,
0023     .owner      = THIS_MODULE,
0024     .flags      = CPUFREQ_GOV_STRICT_TARGET,
0025 };
0026
0027 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
0028 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
0029 MODULE_LICENSE("GPL");
0030
0031 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
0032 struct cpufreq_governor *cpufreq_default_governor(void)
0033 {
0034     return &cpufreq_gov_powersave;
0035 }
0036 #endif
0037
0038 cpufreq_governor_init(cpufreq_gov_powersave);
0039 cpufreq_governor_exit(cpufreq_gov_powersave);