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Diffstat (limited to 'drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_pm_always_on.h')
-rwxr-xr-x | drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_pm_always_on.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_pm_always_on.h b/drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_pm_always_on.h new file mode 100755 index 00000000000..3272e6e9a15 --- /dev/null +++ b/drivers/gpu/arm/t6xx/kbase/src/common/mali_kbase_pm_always_on.h @@ -0,0 +1,66 @@ + +/* + * + * (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 */ |