1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-only 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * linux/drivers/cpufreq/cpufreq_powersave.c 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * Copyright (C) 2002 - 2003 Dominik Brodowski <linux@brodo.de> 6*4882a593Smuzhiyun */ 7*4882a593Smuzhiyun 8*4882a593Smuzhiyun #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #include <linux/cpufreq.h> 11*4882a593Smuzhiyun #include <linux/init.h> 12*4882a593Smuzhiyun #include <linux/module.h> 13*4882a593Smuzhiyun cpufreq_gov_powersave_limits(struct cpufreq_policy * policy)14*4882a593Smuzhiyunstatic void cpufreq_gov_powersave_limits(struct cpufreq_policy *policy) 15*4882a593Smuzhiyun { 16*4882a593Smuzhiyun pr_debug("setting to %u kHz\n", policy->min); 17*4882a593Smuzhiyun __cpufreq_driver_target(policy, policy->min, CPUFREQ_RELATION_L); 18*4882a593Smuzhiyun } 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun static struct cpufreq_governor cpufreq_gov_powersave = { 21*4882a593Smuzhiyun .name = "powersave", 22*4882a593Smuzhiyun .limits = cpufreq_gov_powersave_limits, 23*4882a593Smuzhiyun .owner = THIS_MODULE, 24*4882a593Smuzhiyun .flags = CPUFREQ_GOV_STRICT_TARGET, 25*4882a593Smuzhiyun }; 26*4882a593Smuzhiyun 27*4882a593Smuzhiyun MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>"); 28*4882a593Smuzhiyun MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'"); 29*4882a593Smuzhiyun MODULE_LICENSE("GPL"); 30*4882a593Smuzhiyun 31*4882a593Smuzhiyun #ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE cpufreq_default_governor(void)32*4882a593Smuzhiyunstruct cpufreq_governor *cpufreq_default_governor(void) 33*4882a593Smuzhiyun { 34*4882a593Smuzhiyun return &cpufreq_gov_powersave; 35*4882a593Smuzhiyun } 36*4882a593Smuzhiyun #endif 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun cpufreq_governor_init(cpufreq_gov_powersave); 39*4882a593Smuzhiyun cpufreq_governor_exit(cpufreq_gov_powersave); 40