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116 lines
3.7 KiB
C
Executable file
116 lines
3.7 KiB
C
Executable file
/*
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* linux/include/linux/cpu_cooling.h
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*
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* Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
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* Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org>
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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*
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* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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*/
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#ifndef __CPU_COOLING_H__
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#define __CPU_COOLING_H__
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#include <linux/of.h>
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#include <linux/thermal.h>
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#include <linux/cpumask.h>
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#ifdef CONFIG_CPU_THERMAL
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#ifndef CONFIG_SOC_EXYNOS7580
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/**
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* struct cpufreq_cooling_device - data for cooling device with cpufreq
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* @id: unique integer value corresponding to each cpufreq_cooling_device
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* registered.
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* @cool_dev: thermal_cooling_device pointer to keep track of the
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* registered cooling device.
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* @cpufreq_state: integer value representing the current state of cpufreq
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* cooling devices.
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* @cpufreq_val: integer value representing the absolute value of the clipped
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* frequency.
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* @allowed_cpus: all the cpus involved for this cpufreq_cooling_device.
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*
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* This structure is required for keeping information of each
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* cpufreq_cooling_device registered. In order to prevent corruption of this a
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* mutex lock cooling_cpufreq_lock is used.
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*/
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struct cpufreq_cooling_device {
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int id;
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struct thermal_cooling_device *cool_dev;
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unsigned int cpufreq_state;
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unsigned int cpufreq_val;
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struct cpumask allowed_cpus;
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struct list_head node;
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};
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#endif
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/**
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* cpufreq_cooling_register - function to create cpufreq cooling device.
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* @clip_cpus: cpumask of cpus where the frequency constraints will happen
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*/
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struct thermal_cooling_device *
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cpufreq_cooling_register(const struct cpumask *clip_cpus);
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/**
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* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
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* @np: a valid struct device_node to the cooling device device tree node.
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* @clip_cpus: cpumask of cpus where the frequency constraints will happen
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*/
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#ifdef CONFIG_THERMAL_OF
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struct thermal_cooling_device *
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of_cpufreq_cooling_register(struct device_node *np,
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const struct cpumask *clip_cpus);
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#else
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static inline struct thermal_cooling_device *
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of_cpufreq_cooling_register(struct device_node *np,
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const struct cpumask *clip_cpus)
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{
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return NULL;
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}
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#endif
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/**
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* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
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* @cdev: thermal cooling device pointer.
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*/
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void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
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unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq);
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#else /* !CONFIG_CPU_THERMAL */
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static inline struct thermal_cooling_device *
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cpufreq_cooling_register(const struct cpumask *clip_cpus)
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{
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return NULL;
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}
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static inline struct thermal_cooling_device *
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of_cpufreq_cooling_register(struct device_node *np,
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const struct cpumask *clip_cpus)
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{
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return NULL;
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}
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static inline
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void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
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{
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return;
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}
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static inline
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unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq)
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{
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return THERMAL_CSTATE_INVALID;
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}
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#endif /* CONFIG_CPU_THERMAL */
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#endif /* __CPU_COOLING_H__ */
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