1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * linux/drivers/cpufreq/cpufreq_powersave.c 4 * 5 * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> 6 */ 7 8 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 9 10 #include <linux/cpufreq.h> 11 #include <linux/init.h> 12 #include <linux/module.h> 13 14 static void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy) 15 { 16 pr_debug("setting to %u kHz\n", policy->min); 17 __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L); 18 } 19 20 static struct cpufreq_governor cpufreq_gov_powersave = { 21 .name = "powersave", 22 .limits = cpufreq_gov_powersave_limits, 23 .owner = THIS_MODULE, 24 .flags = CPUFREQ_GOV_STRICT_TARGET, 25 }; 26 27 MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 28 MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); 29 MODULE_LICENSE("GPL"); 30 31 #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE 32 struct cpufreq_governor *cpufreq_default_governor(void) 33 { 34 return &cpufreq_gov_powersave; 35 } 36 #endif 37 38 cpufreq_governor_init(cpufreq_gov_powersave); 39 cpufreq_governor_exit(cpufreq_gov_powersave); 40