1 /* Copyright (c) 2015, The Linux Foundataion. All rights reserved. 2 * 3 * Redistribution and use in source and binary forms, with or without 4 * modification, are permitted provided that the following conditions are 5 * met: 6 * * Redistributions of source code must retain the above copyright 7 * notice, this list of conditions and the following disclaimer. 8 * * Redistributions in binary form must reproduce the above 9 * copyright notice, this list of conditions and the following 10 * disclaimer in the documentation and/or other materials provided 11 * with the distribution. 12 * * Neither the name of The Linux Foundation nor the names of its 13 * contributors may be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 20 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 23 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 24 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE 25 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 26 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 * 28 */ 29 30 #ifndef __CPUHINT_H__ 31 #define __CPUHINT_H__ 32 33 #include <core/sdm_types.h> 34 35 namespace sdm { 36 37 class HWCDebugHandler; 38 39 class CPUHint { 40 public: 41 ~CPUHint(); 42 DisplayError Init(HWCDebugHandler *debug_handler); 43 void Set(); 44 void Reset(); 45 46 private: 47 enum { HINT = 0x4501 /* 45-display layer hint, 01-Enable */ }; 48 bool enabled_ = false; 49 // frames to wait before setting this hint 50 int pre_enable_window_ = 0; 51 int frame_countdown_ = 0; 52 int lock_handle_ = 0; 53 bool lock_acquired_ = false; 54 void *lib_handle_ = NULL; 55 int (*fn_lock_acquire_)(int handle, int duration, int *hints, int num_args) = NULL; 56 int (*fn_lock_release_)(int value) = NULL; 57 }; 58 59 } // namespace sdm 60 61 #endif // __CPUHINT_H__ 62