174 lines
5.6 KiB
C
Executable file
174 lines
5.6 KiB
C
Executable file
/*
|
|
* 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>
|
|
#include <linux/pm_qos.h>
|
|
|
|
struct cpufreq_policy;
|
|
|
|
typedef int (*get_static_t)(cpumask_t *cpumask, int interval,
|
|
unsigned long voltage, u32 *power);
|
|
|
|
/**
|
|
* struct exynos_cpufreq_cooling_device - data for cooling device with cpufreq
|
|
* @id: unique integer value corresponding to each exynos_cpufreq_cooling_device
|
|
* registered.
|
|
* @last_load: load measured by the latest call to cpufreq_get_requested_power()
|
|
* @cpufreq_state: integer value representing the current state of cpufreq
|
|
* cooling devices.
|
|
* @clipped_freq: integer value representing the absolute value of the clipped
|
|
* frequency.
|
|
* @max_level: maximum cooling level. One less than total number of valid
|
|
* cpufreq frequencies.
|
|
* @freq_table: Freq table in descending order of frequencies
|
|
* @cdev: thermal_cooling_device pointer to keep track of the
|
|
* registered cooling device.
|
|
* @policy: cpufreq policy.
|
|
* @node: list_head to link all exynos_cpufreq_cooling_device together.
|
|
* @idle_time: idle time stats
|
|
* @plat_get_static_power: callback to calculate the static power
|
|
*
|
|
* This structure is required for keeping information of each registered
|
|
* exynos_cpufreq_cooling_device.
|
|
*/
|
|
struct exynos_cpufreq_cooling_device {
|
|
int id;
|
|
u32 last_load;
|
|
unsigned int cpufreq_state;
|
|
unsigned int clipped_freq;
|
|
unsigned int max_level;
|
|
struct freq_table *freq_table; /* In descending order */
|
|
struct thermal_cooling_device *cdev;
|
|
struct cpufreq_policy *policy;
|
|
struct list_head node;
|
|
struct time_in_idle *idle_time;
|
|
get_static_t plat_get_static_power;
|
|
int *var_table;
|
|
unsigned int var_volt_size;
|
|
unsigned int var_temp_size;
|
|
struct freq_qos_request qos_req;
|
|
struct thermal_zone_device *tz;
|
|
};
|
|
|
|
#if defined(CONFIG_EXYNOS_CPU_THERMAL) || defined(CONFIG_EXYNOS_CPU_THERMAL_MODULE)
|
|
/**
|
|
* 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_power_cooling_register(struct cpufreq_policy *policy,
|
|
u32 capacitance, get_static_t plat_static_func);
|
|
|
|
/**
|
|
* of_cpufreq_cooling_register - create cpufreq cooling device based on DT.
|
|
* @np: a valid struct device_node to the cooling device device tree node.
|
|
* @policy: cpufreq policy.
|
|
*/
|
|
#ifdef CONFIG_THERMAL_OF
|
|
struct thermal_cooling_device *
|
|
of_cpufreq_power_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy,
|
|
u32 capacitance,
|
|
get_static_t plat_static_func);
|
|
|
|
struct thermal_cooling_device *
|
|
exynos_cpufreq_cooling_register(struct device_node *np, struct cpufreq_policy *policy);
|
|
int cpu_cooling_notifier_register(struct notifier_block *n);
|
|
int cpu_cooling_notifier_unregister(struct notifier_block *n);
|
|
|
|
#else
|
|
static inline struct thermal_cooling_device *
|
|
of_cpufreq_power_cooling_register(struct device_node *np,
|
|
struct cpufreq_policy *policy,
|
|
u32 capacitance,
|
|
get_static_t plat_static_func)
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline struct thermal_cooling_device *
|
|
exynos_cpufreq_cooling_register(struct device_node *np, struct cpufreq_policy *policy);
|
|
{
|
|
return NULL;
|
|
}
|
|
|
|
static inline int cpu_cooling_notifier_register(struct notifier_block *n)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
static inline int cpu_cooling_notifier_unregister(struct notifier_block *n)
|
|
{
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* cpufreq_cooling_unregister - function to remove cpufreq cooling device.
|
|
* @cdev: thermal cooling device pointer.
|
|
*/
|
|
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev);
|
|
|
|
unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq);
|
|
#else /* !CONFIG_CPU_THERMAL */
|
|
static inline struct thermal_cooling_device *
|
|
cpufreq_cooling_register(struct cpufreq_policy *policy)
|
|
{
|
|
return ERR_PTR(-ENOSYS);
|
|
}
|
|
|
|
static inline
|
|
void cpufreq_cooling_unregister(struct thermal_cooling_device *cdev)
|
|
{
|
|
return;
|
|
}
|
|
static inline
|
|
unsigned long cpufreq_cooling_get_level(unsigned int cpu, unsigned int freq)
|
|
{
|
|
return THERMAL_CSTATE_INVALID;
|
|
}
|
|
#endif /* CONFIG_CPU_THERMAL */
|
|
|
|
#if defined(CONFIG_THERMAL_OF) && (defined(CONFIG_EXYNOS_CPU_THERMAL) || defined(CONFIG_EXYNOS_CPU_THERMAL_MODULE))
|
|
/**
|
|
* 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;
|
|
}
|
|
#endif /* defined(CONFIG_THERMAL_OF) && defined(CONFIG_CPU_THERMAL) */
|
|
#endif /* __CPU_COOLING_H__ */
|