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/*
*
* (C) COPYRIGHT 2014-2016 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* A copy of the licence is included with the program, and can also be obtained
* from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef _BASE_POWER_MODEL_SIMPLE_H_
#define _BASE_POWER_MODEL_SIMPLE_H_
/**
* kbase_power_model_simple_init - Initialise the simple power model
* @kbdev: Device pointer
*
* The simple power model estimates power based on current voltage, temperature,
* and coefficients read from device tree. It does not take utilization into
* account.
*
* The power model requires coefficients from the power_model node in device
* tree. The absence of this node will prevent the model from functioning, but
* should not prevent the rest of the driver from running.
*
* Return: 0 on success
* -ENOSYS if the power_model node is not present in device tree
* -EPROBE_DEFER if the thermal zone specified in device tree is not
* currently available
* Any other negative value on failure
*/
int kbase_power_model_simple_init(struct kbase_device *kbdev);
#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0)
extern struct devfreq_cooling_ops power_model_simple_ops;
#else
extern struct devfreq_cooling_power power_model_simple_ops;
#endif
#endif /* _BASE_POWER_MODEL_SIMPLE_H_ */
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