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/*
* linux/include/linux/cpu_cooling.h
*
* Copyright (C) 2012 Samsung Electronics Co., Ltd(http://www.samsung.com)
* Copyright (C) 2012 Amit Daniel <amit.kachhap@linaro.org>
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*
* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
#ifndef __CPU_COOLING_H__
#define __CPU_COOLING_H__
#include <linux/of.h>
#include <linux/thermal.h>
#include <linux/cpumask.h>
struct cpufreq_policy;
typedef int (*plat_mitig_t)(int cpu, u32 clip_freq);
struct cpu_cooling_ops {
plat_mitig_t ceil_limit, floor_limit;
};
#ifdef CONFIG_CPU_THERMAL
/**
* cpufreq_cooling_register - function to create cpufreq cooling device.
* @policy: cpufreq policy.
*/
struct thermal_cooling_device *
cpufreq_cooling_register(struct cpufreq_policy *policy);
struct thermal_cooling_device *
cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
struct cpu_cooling_ops *ops);
/**
* cpufreq_platform_cooling_register - create cpufreq cooling device with
* additional platform specific mitigation function.
*
* @policy: cpufreq policy
* @plat_ops: the platform mitigation functions that will be called insted of
* cpufreq, if provided.
*/
struct thermal_cooling_device *
cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
struct cpu_cooling_ops *ops);
/**
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
* @cdev: thermal cooling device pointer.
*/
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
#else /* !CONFIG_CPU_THERMAL */
static inline struct thermal_cooling_device *
cpufreq_cooling_register(struct cpufreq_policy *policy)
{
return ERR_PTR(-ENOSYS);
}
static inline struct thermal_cooling_device *
cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
struct cpu_cooling_ops *ops)
{
return NULL;
}
static inline
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
{
return;
}
#endif /* CONFIG_CPU_THERMAL */
#if defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL)
/**
* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
* @policy: cpufreq policy.
*/
struct thermal_cooling_device *
of_cpufreq_cooling_register(struct cpufreq_policy *policy);
#else
static inline struct thermal_cooling_device *
of_cpufreq_cooling_register(struct cpufreq_policy *policy)
{
return NULL;
}
static inline struct thermal_cooling_device *
cpufreq_platform_cooling_register(struct cpufreq_policy *policy,
struct cpu_cooling_ops *ops)
{
return NULL;
}
#endif /* defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL) */
#if IS_ENABLED(CONFIG_QTI_CPU_ISOLATE_COOLING_DEVICE)
extern void cpu_cooling_max_level_notifier_register(struct notifier_block *n);
extern void cpu_cooling_max_level_notifier_unregister(struct notifier_block *n);
extern const struct cpumask *cpu_cooling_get_max_level_cpumask(void);
#else
static inline
void cpu_cooling_max_level_notifier_register(struct notifier_block *n)
{
}
static inline
void cpu_cooling_max_level_notifier_unregister(struct notifier_block *n)
{
}
static inline const struct cpumask *cpu_cooling_get_max_level_cpumask(void)
{
return cpu_none_mask;
}
#endif /* CONFIG_QTI_CPU_ISOLATE_COOLING_DEVICE */
#endif /* __CPU_COOLING_H__ */
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