1 /* 2 * 3 * (C) COPYRIGHT 2011-2015 ARM Limited. All rights reserved. 4 * 5 * This program is free software and is provided to you under the terms of the 6 * GNU General Public License version 2 as published by the Free Software 7 * Foundation, and any use by you of this program is subject to the terms 8 * of such GNU licence. 9 * 10 * A copy of the licence is included with the program, and can also be obtained 11 * from Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 12 * Boston, MA 02110-1301, USA. 13 * 14 */ 15 16 17 18 19 20 /* 21 * A simple demand based power management policy 22 */ 23 24 #ifndef MALI_KBASE_PM_DEMAND_H 25 #define MALI_KBASE_PM_DEMAND_H 26 27 /** 28 * DOC: Demand power management policy 29 * 30 * The demand power management policy has the following characteristics: 31 * - When KBase indicates that the GPU will be powered up, but we don't yet 32 * know which Job Chains are to be run: 33 * - The Shader Cores are not powered up 34 * 35 * - When KBase indicates that a set of Shader Cores are needed to submit the 36 * currently queued Job Chains: 37 * - Only those Shader Cores are powered up 38 * 39 * - When KBase indicates that the GPU need not be powered: 40 * - The Shader Cores are powered off, and the GPU itself is powered off too. 41 * 42 * Note: 43 * - KBase indicates the GPU will be powered up when it has a User Process that 44 * has just started to submit Job Chains. 45 * 46 * - KBase indicates the GPU need not be powered when all the Job Chains from 47 * User Processes have finished, and it is waiting for a User Process to 48 * submit some more Job Chains. 49 */ 50 51 /** 52 * struct kbasep_pm_policy_demand - Private structure for policy instance data 53 * 54 * @dummy: No state is needed, a dummy variable 55 * 56 * This contains data that is private to the demand power policy. 57 */ 58 struct kbasep_pm_policy_demand { 59 int dummy; 60 }; 61 62 extern const struct kbase_pm_policy kbase_pm_demand_policy_ops; 63 64 #endif /* MALI_KBASE_PM_DEMAND_H */ 65