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/*
*
* (C) COPYRIGHT 2011-2013 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.
*
*/
/**
* @file mali_kbase_pm_always_on.h
* "Always on" power management policy
*/
#ifndef MALI_KBASE_PM_ALWAYS_ON_H
#define MALI_KBASE_PM_ALWAYS_ON_H
/**
* 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:
* - All Shader Cores are powered up, regardless of whether or not they will
* be needed later.
* - When KBase indicates that a set of Shader Cores are needed to submit the
* currently queued Job Chains:
* - All 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.
*/
/**
* Private structure for policy instance data.
*
* This contains data that is private to the particular power policy that is active.
*/
typedef struct kbasep_pm_policy_always_on {
/** No state needed - just have a dummy variable here */
int dummy;
} kbasep_pm_policy_always_on;
#endif /* MALI_KBASE_PM_ALWAYS_ON_H */
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