1/* 2* Copyright (c) 2015 - 2017, The Linux Foundation. All rights reserved. 3* 4* Redistribution and use in source and binary forms, with or without modification, are permitted 5* provided that the following conditions are met: 6* * Redistributions of source code must retain the above copyright notice, this list of 7* conditions and the following disclaimer. 8* * Redistributions in binary form must reproduce the above copyright notice, this list of 9* conditions and the following disclaimer in the documentation and/or other materials provided 10* with the distribution. 11* * Neither the name of The Linux Foundation nor the names of its contributors may be used to 12* endorse or promote products derived from this software without specific prior written 13* permission. 14* 15* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 16* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 17* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE 18* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 19* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 20* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 21* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 22* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 23*/ 24 25#ifndef __HW_INFO_H__ 26#define __HW_INFO_H__ 27 28#include <core/sdm_types.h> 29#include <core/core_interface.h> 30#include <private/hw_info_types.h> 31#include <linux/msm_mdp.h> 32#include <bitset> 33 34#include "hw_info_interface.h" 35 36#ifndef MDP_IMGTYPE_END 37#define MDP_IMGTYPE_LIMIT1 0x100 38#endif 39 40namespace sdm { 41 42class HWInfo: public HWInfoInterface { 43 public: 44 virtual ~HWInfo() { delete hw_resource_; } 45 virtual DisplayError GetHWResourceInfo(HWResourceInfo *hw_resource); 46 virtual DisplayError GetFirstDisplayInterfaceType(HWDisplayInterfaceInfo *hw_disp_info); 47 48 private: 49 virtual DisplayError GetHWRotatorInfo(HWResourceInfo *hw_resource); 50 virtual DisplayError GetMDSSRotatorInfo(HWResourceInfo *hw_resource); 51 virtual DisplayError GetV4L2RotatorInfo(HWResourceInfo *hw_resource); 52 53 // TODO(user): Read Mdss version from the driver 54 static const int kHWMdssVersion5 = 500; // MDSS_V5 55 static const int kMaxStringLength = 1024; 56 // MDP Capabilities are replicated across all frame buffer devices. 57 // However, we rely on reading the capabalities from fbO since this 58 // is guaranteed to be available. 59 static const int kHWCapabilitiesNode = 0; 60 static const std::bitset<8> kDefaultFormatSupport[kHWSubBlockMax][ 61 BITS_TO_BYTES(MDP_IMGTYPE_LIMIT1)]; 62 static constexpr const char *kRotatorCapsPath = "/sys/devices/virtual/rotator/mdss_rotator/caps"; 63 static constexpr const char *kBWModeBitmap 64 = "/sys/devices/virtual/graphics/fb0/mdp/bw_mode_bitmap"; 65 66 static int ParseString(const char *input, char *tokens[], const uint32_t max_token, 67 const char *delim, uint32_t *count); 68 DisplayError GetDynamicBWLimits(HWResourceInfo *hw_resource); 69 LayerBufferFormat GetSDMFormat(int mdp_format); 70 void InitSupportedFormatMap(HWResourceInfo *hw_resource); 71 void ParseFormats(char *tokens[], uint32_t token_count, HWSubBlockType sub_block_type, 72 HWResourceInfo *hw_resource); 73 void PopulateSupportedFormatMap(const std::bitset<8> *format_supported, uint32_t format_count, 74 HWSubBlockType sub_blk_type, HWResourceInfo *hw_resource); 75 HWResourceInfo *hw_resource_ = NULL; 76}; 77 78} // namespace sdm 79 80#endif // __HW_INFO_H__ 81 82