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      1 /*
      2 * Copyright (c) 2014 - 2018, 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 #include <utils/constants.h>
     26 #include <utils/debug.h>
     27 #include <map>
     28 #include <utility>
     29 #include <vector>
     30 
     31 #include "display_hdmi.h"
     32 #include "hw_interface.h"
     33 #include "hw_info_interface.h"
     34 
     35 #define __CLASS__ "DisplayHDMI"
     36 
     37 namespace sdm {
     38 
     39 DisplayHDMI::DisplayHDMI(DisplayEventHandler *event_handler, HWInfoInterface *hw_info_intf,
     40                          BufferSyncHandler *buffer_sync_handler, BufferAllocator *buffer_allocator,
     41                          CompManager *comp_manager)
     42   : DisplayBase(kHDMI, event_handler, kDeviceHDMI, buffer_sync_handler, buffer_allocator,
     43                 comp_manager, hw_info_intf) {
     44 }
     45 
     46 DisplayError DisplayHDMI::Init() {
     47   lock_guard<recursive_mutex> obj(recursive_mutex_);
     48 
     49   DisplayError error = HWInterface::Create(kHDMI, hw_info_intf_, buffer_sync_handler_,
     50                                            buffer_allocator_, &hw_intf_);
     51   if (error != kErrorNone) {
     52     return error;
     53   }
     54 
     55   uint32_t active_mode_index;
     56   char value[64] = "0";
     57   Debug::GetProperty(HDMI_S3D_MODE_PROP, value);
     58   HWS3DMode mode = (HWS3DMode)atoi(value);
     59   if (mode > kS3DModeNone && mode < kS3DModeMax) {
     60     active_mode_index = GetBestConfig(mode);
     61   } else {
     62     active_mode_index = GetBestConfig(kS3DModeNone);
     63   }
     64 
     65   error = hw_intf_->SetDisplayAttributes(active_mode_index);
     66   if (error != kErrorNone) {
     67     HWInterface::Destroy(hw_intf_);
     68   }
     69 
     70   error = DisplayBase::Init();
     71   if (error != kErrorNone) {
     72     HWInterface::Destroy(hw_intf_);
     73     return error;
     74   }
     75 
     76   GetScanSupport();
     77   underscan_supported_ = (scan_support_ == kScanAlwaysUnderscanned) || (scan_support_ == kScanBoth);
     78 
     79   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
     80                             (kS3dFormatNone, kS3DModeNone));
     81   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
     82                             (kS3dFormatLeftRight, kS3DModeLR));
     83   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
     84                             (kS3dFormatRightLeft, kS3DModeRL));
     85   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
     86                             (kS3dFormatTopBottom, kS3DModeTB));
     87   s3d_format_to_mode_.insert(std::pair<LayerBufferS3DFormat, HWS3DMode>
     88                             (kS3dFormatFramePacking, kS3DModeFP));
     89 
     90   error = HWEventsInterface::Create(INT(display_type_), this, event_list_, &hw_events_intf_);
     91   if (error != kErrorNone) {
     92     DisplayBase::Deinit();
     93     HWInterface::Destroy(hw_intf_);
     94     DLOGE("Failed to create hardware events interface. Error = %d", error);
     95   }
     96 
     97   return error;
     98 }
     99 
    100 DisplayError DisplayHDMI::Prepare(LayerStack *layer_stack) {
    101   lock_guard<recursive_mutex> obj(recursive_mutex_);
    102   DisplayError error = kErrorNone;
    103   uint32_t new_mixer_width = 0;
    104   uint32_t new_mixer_height = 0;
    105   uint32_t display_width = display_attributes_.x_pixels;
    106   uint32_t display_height = display_attributes_.y_pixels;
    107 
    108   if (NeedsMixerReconfiguration(layer_stack, &new_mixer_width, &new_mixer_height)) {
    109     error = ReconfigureMixer(new_mixer_width, new_mixer_height);
    110     if (error != kErrorNone) {
    111       ReconfigureMixer(display_width, display_height);
    112     }
    113   }
    114 
    115   SetS3DMode(layer_stack);
    116 
    117   // Clean hw layers for reuse.
    118   hw_layers_ = HWLayers();
    119 
    120   return DisplayBase::Prepare(layer_stack);
    121 }
    122 
    123 DisplayError DisplayHDMI::GetRefreshRateRange(uint32_t *min_refresh_rate,
    124                                               uint32_t *max_refresh_rate) {
    125   lock_guard<recursive_mutex> obj(recursive_mutex_);
    126   DisplayError error = kErrorNone;
    127 
    128   if (hw_panel_info_.min_fps && hw_panel_info_.max_fps) {
    129     *min_refresh_rate = hw_panel_info_.min_fps;
    130     *max_refresh_rate = hw_panel_info_.max_fps;
    131   } else {
    132     error = DisplayBase::GetRefreshRateRange(min_refresh_rate, max_refresh_rate);
    133   }
    134 
    135   return error;
    136 }
    137 
    138 DisplayError DisplayHDMI::SetRefreshRate(uint32_t refresh_rate) {
    139   lock_guard<recursive_mutex> obj(recursive_mutex_);
    140 
    141   if (!active_) {
    142     return kErrorPermission;
    143   }
    144 
    145   DisplayError error = hw_intf_->SetRefreshRate(refresh_rate);
    146   if (error != kErrorNone) {
    147     return error;
    148   }
    149 
    150   return DisplayBase::ReconfigureDisplay();
    151 }
    152 
    153 bool DisplayHDMI::IsUnderscanSupported() {
    154   lock_guard<recursive_mutex> obj(recursive_mutex_);
    155   return underscan_supported_;
    156 }
    157 
    158 DisplayError DisplayHDMI::OnMinHdcpEncryptionLevelChange(uint32_t min_enc_level) {
    159   lock_guard<recursive_mutex> obj(recursive_mutex_);
    160   return hw_intf_->OnMinHdcpEncryptionLevelChange(min_enc_level);
    161 }
    162 
    163 uint32_t DisplayHDMI::GetBestConfig(HWS3DMode s3d_mode) {
    164   uint32_t best_index = 0, index;
    165   uint32_t num_modes = 0;
    166 
    167   hw_intf_->GetNumDisplayAttributes(&num_modes);
    168 
    169   // Get display attribute for each mode
    170   std::vector<HWDisplayAttributes> attrib(num_modes);
    171   for (index = 0; index < num_modes; index++) {
    172     hw_intf_->GetDisplayAttributes(index, &attrib[index]);
    173   }
    174 
    175   // Select best config for s3d_mode. If s3d is not enabled, s3d_mode is kS3DModeNone
    176   for (index = 0; index < num_modes; index ++) {
    177     if (attrib[index].s3d_config[s3d_mode]) {
    178       break;
    179     }
    180   }
    181   if (index < num_modes) {
    182     best_index = UINT32(index);
    183     for (size_t index = best_index + 1; index < num_modes; index ++) {
    184       if (!attrib[index].s3d_config[s3d_mode])
    185         continue;
    186 
    187       // From the available configs, select the best
    188       // Ex: 1920x1080@60Hz is better than 1920x1080@30 and 1920x1080@30 is better than 1280x720@60
    189       if (attrib[index].y_pixels > attrib[best_index].y_pixels) {
    190         best_index = UINT32(index);
    191       } else if (attrib[index].y_pixels == attrib[best_index].y_pixels) {
    192         if (attrib[index].x_pixels > attrib[best_index].x_pixels) {
    193           best_index = UINT32(index);
    194         } else if (attrib[index].x_pixels == attrib[best_index].x_pixels) {
    195           if (attrib[index].vsync_period_ns < attrib[best_index].vsync_period_ns) {
    196             best_index = UINT32(index);
    197           }
    198         }
    199       }
    200     }
    201   } else {
    202     DLOGW("%s, could not support S3D mode from EDID info. S3D mode is %d",
    203           __FUNCTION__, s3d_mode);
    204   }
    205 
    206   // Used for changing HDMI Resolution - override the best with user set config
    207   uint32_t user_config = UINT32(Debug::GetHDMIResolution());
    208   if (user_config) {
    209     uint32_t config_index = 0;
    210     // For the config, get the corresponding index
    211     DisplayError error = hw_intf_->GetConfigIndex(user_config, &config_index);
    212     if (error == kErrorNone)
    213       return config_index;
    214   }
    215 
    216   return best_index;
    217 }
    218 
    219 void DisplayHDMI::GetScanSupport() {
    220   DisplayError error = kErrorNone;
    221   uint32_t video_format = 0;
    222   uint32_t max_cea_format = 0;
    223   HWScanInfo scan_info = HWScanInfo();
    224   hw_intf_->GetHWScanInfo(&scan_info);
    225 
    226   uint32_t active_mode_index = 0;
    227   hw_intf_->GetActiveConfig(&active_mode_index);
    228 
    229   error = hw_intf_->GetVideoFormat(active_mode_index, &video_format);
    230   if (error != kErrorNone) {
    231     return;
    232   }
    233 
    234   error = hw_intf_->GetMaxCEAFormat(&max_cea_format);
    235   if (error != kErrorNone) {
    236     return;
    237   }
    238 
    239   // The scan support for a given HDMI TV must be read from scan info corresponding to
    240   // Preferred Timing if the preferred timing of the display is currently active, and if it is
    241   // valid. In all other cases, we must read the scan support from CEA scan info if
    242   // the resolution is a CEA resolution, or from IT scan info for all other resolutions.
    243   if (active_mode_index == 0 && scan_info.pt_scan_support != kScanNotSupported) {
    244     scan_support_ = scan_info.pt_scan_support;
    245   } else if (video_format < max_cea_format) {
    246     scan_support_ = scan_info.cea_scan_support;
    247   } else {
    248     scan_support_ = scan_info.it_scan_support;
    249   }
    250 }
    251 
    252 void DisplayHDMI::SetS3DMode(LayerStack *layer_stack) {
    253   uint32_t s3d_layer_count = 0;
    254   HWS3DMode s3d_mode = kS3DModeNone;
    255   uint32_t layer_count = UINT32(layer_stack->layers.size());
    256 
    257   // S3D mode is supported for the following scenarios:
    258   // 1. Layer stack containing only one s3d layer which is not skip
    259   // 2. Layer stack containing only one secure layer along with one s3d layer
    260   for (uint32_t i = 0; i < layer_count; i++) {
    261     Layer *layer = layer_stack->layers.at(i);
    262     LayerBuffer &layer_buffer = layer->input_buffer;
    263 
    264     if (layer_buffer.s3d_format != kS3dFormatNone) {
    265       s3d_layer_count++;
    266       if (s3d_layer_count > 1 || layer->flags.skip) {
    267         s3d_mode = kS3DModeNone;
    268         break;
    269       }
    270 
    271       std::map<LayerBufferS3DFormat, HWS3DMode>::iterator it =
    272                 s3d_format_to_mode_.find(layer_buffer.s3d_format);
    273       if (it != s3d_format_to_mode_.end()) {
    274         s3d_mode = it->second;
    275       }
    276     } else if (layer_buffer.flags.secure && layer_count > 2) {
    277         s3d_mode = kS3DModeNone;
    278         break;
    279     }
    280   }
    281 
    282   if (hw_intf_->SetS3DMode(s3d_mode) != kErrorNone) {
    283     hw_intf_->SetS3DMode(kS3DModeNone);
    284     layer_stack->flags.s3d_mode_present = false;
    285   } else if (s3d_mode != kS3DModeNone) {
    286     layer_stack->flags.s3d_mode_present = true;
    287   }
    288 
    289   DisplayBase::ReconfigureDisplay();
    290 }
    291 
    292 DisplayError DisplayHDMI::VSync(int64_t timestamp) {
    293   if (vsync_enable_) {
    294     DisplayEventVSync vsync;
    295     vsync.timestamp = timestamp;
    296     event_handler_->VSync(vsync);
    297   }
    298 
    299   return kErrorNone;
    300 }
    301 
    302 }  // namespace sdm
    303 
    304