linux/drivers/cpufreq/cpufreq_powersave.c
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   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
  14static 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
  20static 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
  27MODULE_AUTHOR("Dominik Brodowski <linux@brodo.de>");
  28MODULE_DESCRIPTION("CPUfreq policy governor 'powersave'");
  29MODULE_LICENSE("GPL");
  30
  31#ifdef CONFIG_CPU_FREQ_DEFAULT_GOV_POWERSAVE
  32struct cpufreq_governor *cpufreq_default_governor(void)
  33{
  34        return &cpufreq_gov_powersave;
  35}
  36#endif
  37
  38cpufreq_governor_init(cpufreq_gov_powersave);
  39cpufreq_governor_exit(cpufreq_gov_powersave);
  40