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615510fe13
Remove old power model and use new Energy Model to calculate the power budget. It drops static + dynamic power calculations and power table in order to use Energy Model performance domain data. This model should be easy to use and could find more users. It is also less complicated to setup the needed structures. Reviewed-by: Ionela Voinescu <ionela.voinescu@arm.com> Signed-off-by: Lukasz Luba <lukasz.luba@arm.com> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> Link: https://lore.kernel.org/r/20201210143014.24685-5-lukasz.luba@arm.com
89 lines
2.7 KiB
C
89 lines
2.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* devfreq_cooling: Thermal cooling device implementation for devices using
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* devfreq
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*
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* Copyright (C) 2014-2015 ARM Limited
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*
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*/
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#ifndef __DEVFREQ_COOLING_H__
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#define __DEVFREQ_COOLING_H__
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#include <linux/devfreq.h>
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#include <linux/thermal.h>
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/**
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* struct devfreq_cooling_power - Devfreq cooling power ops
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* @get_real_power: When this is set, the framework uses it to ask the
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* device driver for the actual power.
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* Some devices have more sophisticated methods
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* (like power counters) to approximate the actual power
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* that they use.
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* This function provides more accurate data to the
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* thermal governor. When the driver does not provide
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* such function, framework just uses pre-calculated
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* table and scale the power by 'utilization'
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* (based on 'busy_time' and 'total_time' taken from
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* devfreq 'last_status').
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* The value returned by this function must be lower
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* or equal than the maximum power value
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* for the current state
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* (which can be found in power_table[state]).
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* When this interface is used, the power_table holds
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* max total (static + dynamic) power value for each OPP.
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*/
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struct devfreq_cooling_power {
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int (*get_real_power)(struct devfreq *df, u32 *power,
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unsigned long freq, unsigned long voltage);
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};
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#ifdef CONFIG_DEVFREQ_THERMAL
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struct thermal_cooling_device *
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of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
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struct devfreq_cooling_power *dfc_power);
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struct thermal_cooling_device *
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of_devfreq_cooling_register(struct device_node *np, struct devfreq *df);
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struct thermal_cooling_device *devfreq_cooling_register(struct devfreq *df);
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void devfreq_cooling_unregister(struct thermal_cooling_device *dfc);
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struct thermal_cooling_device *
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devfreq_cooling_em_register(struct devfreq *df,
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struct devfreq_cooling_power *dfc_power);
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#else /* !CONFIG_DEVFREQ_THERMAL */
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static inline struct thermal_cooling_device *
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of_devfreq_cooling_register_power(struct device_node *np, struct devfreq *df,
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struct devfreq_cooling_power *dfc_power)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct thermal_cooling_device *
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of_devfreq_cooling_register(struct device_node *np, struct devfreq *df)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct thermal_cooling_device *
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devfreq_cooling_register(struct devfreq *df)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline struct thermal_cooling_device *
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devfreq_cooling_em_register(struct devfreq *df,
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struct devfreq_cooling_power *dfc_power)
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{
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return ERR_PTR(-EINVAL);
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}
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static inline void
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devfreq_cooling_unregister(struct thermal_cooling_device *dfc)
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{
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}
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#endif /* CONFIG_DEVFREQ_THERMAL */
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#endif /* __DEVFREQ_COOLING_H__ */
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