139 lines
4.1 KiB
C
Executable File
139 lines
4.1 KiB
C
Executable File
/*
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* linux/include/linux/gpu_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 __ISP_COOLING_H__
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#define __ISP_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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#include <linux/platform_device.h>
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#define ISP_FPS_INVALID ~1
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#ifdef CONFIG_ISP_THERMAL
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#define ISP_FPS_ENTRY_INVALID ~0
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#define ISP_FPS_TABLE_END ~1
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struct isp_fps_table {
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unsigned int flags;
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unsigned int driver_data; /* driver specific data, not used by core */
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unsigned int fps; /* kHz - doesn't need to be in ascending
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* order */
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};
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static inline bool isp_fps_next_valid(struct isp_fps_table **pos)
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{
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while ((*pos)->fps != ISP_FPS_TABLE_END)
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if ((*pos)->fps != ISP_FPS_ENTRY_INVALID)
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return true;
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else
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(*pos)++;
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return false;
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}
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/*
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* isp_fps_for_each_entry - iterate over a cpufreq_frequency_table
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* @pos: the cpufreq_frequency_table * to use as a loop cursor.
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* @table: the cpufreq_frequency_table * to iterate over.
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*/
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#define isp_fps_for_each_entry(pos, table) \
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for (pos = table; pos->fps != ISP_FPS_TABLE_END; pos++)
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/*
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* isp_fps_for_each_valid_entry - iterate over a cpufreq_frequency_table
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* excluding CPUFREQ_ENTRY_INVALID frequencies.
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* @pos: the cpufreq_frequency_table * to use as a loop cursor.
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* @table: the cpufreq_frequency_table * to iterate over.
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*/
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#define isp_fps_for_each_valid_entry(pos, table) \
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for (pos = table; isp_fps_next_valid(&pos); pos++)
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/**
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* isp_cooling_register - function to create isp cooling device.
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* @clip_gpus: cpumask of gpus where the frequency constraints will happen
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*/
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struct thermal_cooling_device *
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isp_cooling_register(const struct cpumask *clip_gpus);
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/**
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* of_isp_cooling_register - create isp 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_gpus: cpumask of gpus 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_isp_cooling_register(struct device_node *np,
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const struct cpumask *clip_gpus);
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#else
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static inline struct thermal_cooling_device *
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of_isp_cooling_register(struct device_node *np,
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const struct cpumask *clip_gpus)
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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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* isp_cooling_unregister - function to remove isp cooling device.
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* @cdev: thermal cooling device pointer.
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*/
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void isp_cooling_unregister(struct thermal_cooling_device *cdev);
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unsigned long isp_cooling_get_level(unsigned int isp, unsigned int fps);
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unsigned long isp_cooling_get_fps(unsigned int isp, unsigned long level);
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#else /* !CONFIG_ISP_THERMAL */
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static inline struct thermal_cooling_device *
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isp_cooling_register(const struct cpumask *clip_gpus)
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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_isp_cooling_register(struct device_node *np,
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const struct cpumask *clip_gpus)
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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 isp_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 isp_cooling_get_level(unsigned int isp, unsigned int fps)
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{
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return THERMAL_CSTATE_INVALID;
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}
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static inline
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unsigned long isp_cooling_get_fps(unsigned int isp, unsigned long level)
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{
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return ISP_FPS_INVALID;
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}
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#endif /* CONFIG_ISP_THERMAL */
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#endif /* __ISP_COOLING_H__ */
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