Updating ConfigurationDataGet api to include edid data.

Bug: 138398637

Test: manual - ran through modified unit test to make sure the edid data was returned on the MTP
845.

Change-Id: I171cf90d005a09a9cb6ee1081efee653cce47c4a

libs/vr/libdisplay/include/private/dvr/display_protocol.h

@@ -191,7 +191,8 @@ struct SurfaceInfo {
 enum class ConfigFileType : uint32_t {
   kLensMetrics,
   kDeviceMetrics,
-  kDeviceConfiguration
+  kDeviceConfiguration,
+  kDeviceEdid
 };
 
 struct DisplayProtocol {

libs/vr/libdvr/include/dvr/dvr_api.h

@@ -85,6 +85,8 @@ enum {
   DVR_CONFIGURATION_DATA_DEVICE_METRICS = 1,
   // Request the per device configuration data file.
   DVR_CONFIGURATION_DATA_DEVICE_CONFIG = 2,
+  // Request the edid data for the display.
+  DVR_CONFIGURATION_DATA_DEVICE_EDID = 3,
 };
 
 // dvr_display_manager.h

libs/vr/libvrflinger/display_service.cpp

@@ -44,6 +44,18 @@ DisplayService::DisplayService(Hwc2::Composer* hidl,
            Endpoint::Create(display::DisplayProtocol::kClientPath)) {
     hardware_composer_.Initialize(
         hidl, primary_display_id, request_display_callback);
+
+    uint8_t port;
+    const auto error = hidl->getDisplayIdentificationData(
+        primary_display_id, &port, &display_identification_data_);
+    if (error != android::hardware::graphics::composer::V2_1::Error::NONE) {
+      if (error !=
+          android::hardware::graphics::composer::V2_1::Error::UNSUPPORTED) {
+        ALOGI("DisplayService: identification data error\n");
+      } else {
+        ALOGI("DisplayService: identification data unsupported\n");
+      }
+    }
 }
 
 bool DisplayService::IsInitialized() const {
@@ -204,6 +216,12 @@ pdx::Status<std::string> DisplayService::OnGetConfigurationData(
     case display::ConfigFileType::kDeviceConfiguration:
       property_name = kDvrDeviceConfigProperty;
       break;
+    case display::ConfigFileType::kDeviceEdid:
+      if (display_identification_data_.size() == 0) {
+        return ErrorStatus(ENOENT);
+      }
+      return std::string(display_identification_data_.begin(),
+                         display_identification_data_.end());
     default:
       return ErrorStatus(EINVAL);
   }

libs/vr/libvrflinger/display_service.h

@@ -18,6 +18,8 @@
 #include "epoll_event_dispatcher.h"
 #include "hardware_composer.h"
 
+#include "DisplayHardware/DisplayIdentification.h"
+
 namespace android {
 namespace dvr {
 
@@ -117,6 +119,8 @@ class DisplayService : public pdx::ServiceBase<DisplayService> {
 
   DisplayService(const DisplayService&) = delete;
   void operator=(const DisplayService&) = delete;
+
+  DisplayIdentificationData display_identification_data_;
 };
 
 }  // namespace dvr