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