1 /* 2 * Copyright (c) 2015 - 2016, 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 40 namespace sdm { 41 42 class HWInfo: public HWInfoInterface { 43 public: 44 virtual DisplayError GetHWResourceInfo(HWResourceInfo *hw_resource); 45 virtual DisplayError GetFirstDisplayInterfaceType(HWDisplayInterfaceInfo *hw_disp_info); 46 47 private: 48 virtual DisplayError GetHWRotatorInfo(HWResourceInfo *hw_resource); 49 virtual DisplayError GetMDSSRotatorInfo(HWResourceInfo *hw_resource); 50 virtual DisplayError GetV4L2RotatorInfo(HWResourceInfo *hw_resource); 51 52 // TODO(user): Read Mdss version from the driver 53 static const int kHWMdssVersion5 = 500; // MDSS_V5 54 static const int kMaxStringLength = 1024; 55 // MDP Capabilities are replicated across all frame buffer devices. 56 // However, we rely on reading the capabalities from fbO since this 57 // is guaranteed to be available. 58 static const int kHWCapabilitiesNode = 0; 59 static const std::bitset<8> kDefaultFormatSupport[kHWSubBlockMax][ 60 BITS_TO_BYTES(MDP_IMGTYPE_LIMIT1)]; 61 static constexpr const char *kRotatorCapsPath = "/sys/devices/virtual/rotator/mdss_rotator/caps"; 62 static constexpr const char *kBWModeBitmap 63 = "/sys/devices/virtual/graphics/fb0/mdp/bw_mode_bitmap"; 64 65 static int ParseString(const char *input, char *tokens[], const uint32_t max_token, 66 const char *delim, uint32_t *count); 67 DisplayError GetDynamicBWLimits(HWResourceInfo *hw_resource); 68 LayerBufferFormat GetSDMFormat(int mdp_format); 69 void InitSupportedFormatMap(HWResourceInfo *hw_resource); 70 void ParseFormats(char *tokens[], uint32_t token_count, HWSubBlockType sub_block_type, 71 HWResourceInfo *hw_resource); 72 void PopulateSupportedFormatMap(const std::bitset<8> *format_supported, uint32_t format_count, 73 HWSubBlockType sub_blk_type, HWResourceInfo *hw_resource); 74 }; 75 76 } // namespace sdm 77 78 #endif // __HW_INFO_H__ 79 80