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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
*
* (C) COPYRIGHT 2011-2015, 2018, 2020-2021 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 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, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
*/
/*
* "Always on" power management policy
*/
#ifndef MALI_KBASE_PM_ALWAYS_ON_H
#define MALI_KBASE_PM_ALWAYS_ON_H
/**
* DOC:
* The "Always on" power management policy has the following
* characteristics:
*
* - When KBase indicates that the GPU will be powered up, but we don't yet
* know which Job Chains are to be run:
* Shader Cores are powered up, regardless of whether or not they will be
* needed later.
*
* - When KBase indicates that Shader Cores are needed to submit the currently
* queued Job Chains:
* Shader Cores are kept powered, regardless of whether or not they will be
* needed
*
* - When KBase indicates that the GPU need not be powered:
* The Shader Cores are kept powered, regardless of whether or not they will
* be needed. The GPU itself is also kept powered, even though it is not
* needed.
*
* This policy is automatically overridden during system suspend: the desired
* core state is ignored, and the cores are forced off regardless of what the
* policy requests. After resuming from suspend, new changes to the desired
* core state made by the policy are honored.
*
* Note:
*
* - KBase indicates the GPU will be powered up when it has a User Process that
* has just started to submit Job Chains.
*
* - KBase indicates the GPU need not be powered when all the Job Chains from
* User Processes have finished, and it is waiting for a User Process to
* submit some more Job Chains.
*/
/**
* struct kbasep_pm_policy_always_on - Private struct for policy instance data
* @dummy: unused dummy variable
*
* This contains data that is private to the particular power policy that is
* active.
*/
struct kbasep_pm_policy_always_on {
int dummy;
};
extern const struct kbase_pm_policy kbase_pm_always_on_policy_ops;
#endif /* MALI_KBASE_PM_ALWAYS_ON_H */
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