| 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, target_freq: 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 |