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127 lines
3.9 KiB
127 lines
3.9 KiB
/* |
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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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typedef int (*get_static_t)(cpumask_t *cpumask, int interval, |
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unsigned long voltage, u32 *power); |
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#ifdef CONFIG_CPU_THERMAL |
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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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struct thermal_cooling_device * |
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cpufreq_power_cooling_register(const struct cpumask *clip_cpus, |
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u32 capacitance, get_static_t plat_static_func); |
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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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struct thermal_cooling_device * |
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of_cpufreq_power_cooling_register(struct device_node *np, |
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const struct cpumask *clip_cpus, |
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u32 capacitance, |
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get_static_t plat_static_func); |
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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 ERR_PTR(-ENOSYS); |
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} |
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static inline struct thermal_cooling_device * |
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of_cpufreq_power_cooling_register(struct device_node *np, |
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const struct cpumask *clip_cpus, |
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u32 capacitance, |
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get_static_t plat_static_func) |
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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 ERR_PTR(-ENOSYS); |
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} |
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static inline struct thermal_cooling_device * |
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cpufreq_power_cooling_register(const struct cpumask *clip_cpus, |
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u32 capacitance, get_static_t plat_static_func) |
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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 ERR_PTR(-ENOSYS); |
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} |
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static inline struct thermal_cooling_device * |
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of_cpufreq_power_cooling_register(struct device_node *np, |
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const struct cpumask *clip_cpus, |
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u32 capacitance, |
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get_static_t plat_static_func) |
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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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