Merge Android R (rvc-dev-plus-aosp-without-vendor@6692709)

Bug: 166295507
Merged-In: I70ea776b8589ac3a7982c710c5c8b2941d86e55b
Change-Id: Ic1d535e9d2d6f80d95215240dbdb024995b045f8
diff --git a/libs/vr/libbufferhub/consumer_buffer.cpp b/libs/vr/libbufferhub/consumer_buffer.cpp
index 115e866..7823e36 100644
--- a/libs/vr/libbufferhub/consumer_buffer.cpp
+++ b/libs/vr/libbufferhub/consumer_buffer.cpp
@@ -52,12 +52,6 @@
   while (!buffer_state_->compare_exchange_weak(
       current_buffer_state, updated_buffer_state, std::memory_order_acq_rel,
       std::memory_order_acquire)) {
-    ALOGD(
-        "%s Failed to acquire the buffer. Current buffer state was changed to "
-        "%" PRIx32
-        " when trying to acquire the buffer and modify the buffer state to "
-        "%" PRIx32 ". About to try again if the buffer is still posted.",
-        __FUNCTION__, current_buffer_state, updated_buffer_state);
     if (!BufferHubDefs::isClientPosted(current_buffer_state,
                                        client_state_mask())) {
       ALOGE(
@@ -152,12 +146,6 @@
   while (!buffer_state_->compare_exchange_weak(
       current_buffer_state, updated_buffer_state, std::memory_order_acq_rel,
       std::memory_order_acquire)) {
-    ALOGD(
-        "%s: Failed to release the buffer. Current buffer state was changed to "
-        "%" PRIx32
-        " when trying to release the buffer and modify the buffer state to "
-        "%" PRIx32 ". About to try again.",
-        __FUNCTION__, current_buffer_state, updated_buffer_state);
     // The failure of compare_exchange_weak updates current_buffer_state.
     updated_buffer_state = current_buffer_state & (~client_state_mask());
   }
diff --git a/libs/vr/libbufferhub/producer_buffer.cpp b/libs/vr/libbufferhub/producer_buffer.cpp
index 3d88ba5..aa9d072 100644
--- a/libs/vr/libbufferhub/producer_buffer.cpp
+++ b/libs/vr/libbufferhub/producer_buffer.cpp
@@ -96,13 +96,6 @@
   while (!buffer_state_->compare_exchange_weak(
       current_buffer_state, updated_buffer_state, std::memory_order_acq_rel,
       std::memory_order_acquire)) {
-    ALOGD(
-        "%s: Failed to post the buffer. Current buffer state was changed to "
-        "%" PRIx32
-        " when trying to post the buffer and modify the buffer state to "
-        "%" PRIx32
-        ". About to try again if the buffer is still gained by this client.",
-        __FUNCTION__, current_buffer_state, updated_buffer_state);
     if (!BufferHubDefs::isClientGained(current_buffer_state,
                                        client_state_mask())) {
       ALOGE(
@@ -186,15 +179,6 @@
   while (!buffer_state_->compare_exchange_weak(
       current_buffer_state, updated_buffer_state, std::memory_order_acq_rel,
       std::memory_order_acquire)) {
-    ALOGD(
-        "%s: Failed to gain the buffer. Current buffer state was changed to "
-        "%" PRIx32
-        " when trying to gain the buffer and modify the buffer state to "
-        "%" PRIx32
-        ". About to try again if the buffer is still not read by other "
-        "clients.",
-        __FUNCTION__, current_buffer_state, updated_buffer_state);
-
     if (BufferHubDefs::isAnyClientAcquired(current_buffer_state) ||
         BufferHubDefs::isAnyClientGained(current_buffer_state) ||
         (BufferHubDefs::isAnyClientPosted(
diff --git a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue_producer-test.cpp b/libs/vr/libbufferhubqueue/tests/buffer_hub_queue_producer-test.cpp
index 8cc7081..fab1097 100644
--- a/libs/vr/libbufferhubqueue/tests/buffer_hub_queue_producer-test.cpp
+++ b/libs/vr/libbufferhubqueue/tests/buffer_hub_queue_producer-test.cpp
@@ -108,7 +108,7 @@
   void ConnectProducer() {
     IGraphicBufferProducer::QueueBufferOutput output;
     // Can connect the first time.
-    ASSERT_EQ(OK, mProducer->connect(kDummyListener, kTestApi,
+    ASSERT_EQ(OK, mProducer->connect(kStubListener, kTestApi,
                                      kTestControlledByApp, &output));
   }
 
@@ -140,7 +140,7 @@
     return QueueBufferInputBuilder().build();
   }
 
-  const sp<IProducerListener> kDummyListener{new DummyProducerListener};
+  const sp<IProducerListener> kStubListener{new StubProducerListener};
 
   sp<BufferHubProducer> mProducer;
   sp<Surface> mSurface;
@@ -150,11 +150,11 @@
   IGraphicBufferProducer::QueueBufferOutput output;
 
   // NULL output returns BAD_VALUE
-  EXPECT_EQ(BAD_VALUE, mProducer->connect(kDummyListener, kTestApi,
+  EXPECT_EQ(BAD_VALUE, mProducer->connect(kStubListener, kTestApi,
                                           kTestControlledByApp, nullptr));
 
   // Invalid API returns bad value
-  EXPECT_EQ(BAD_VALUE, mProducer->connect(kDummyListener, kTestApiInvalid,
+  EXPECT_EQ(BAD_VALUE, mProducer->connect(kStubListener, kTestApiInvalid,
                                           kTestControlledByApp, &output));
 }
 
@@ -163,7 +163,7 @@
 
   // Can't connect when there is already a producer connected.
   IGraphicBufferProducer::QueueBufferOutput output;
-  EXPECT_EQ(BAD_VALUE, mProducer->connect(kDummyListener, kTestApi,
+  EXPECT_EQ(BAD_VALUE, mProducer->connect(kStubListener, kTestApi,
                                           kTestControlledByApp, &output));
 }
 
@@ -554,18 +554,18 @@
   ProducerQueueParcelable producer_parcelable;
   EXPECT_EQ(mProducer->TakeAsParcelable(&producer_parcelable), BAD_VALUE);
 
-  // Create a valid dummy producer parcelable.
-  auto dummy_channel_parcelable =
+  // Create a valid fake producer parcelable.
+  auto fake_channel_parcelable =
       std::make_unique<pdx::default_transport::ChannelParcelable>(
           LocalHandle(0), LocalHandle(0), LocalHandle(0));
-  EXPECT_TRUE(dummy_channel_parcelable->IsValid());
-  ProducerQueueParcelable dummy_producer_parcelable(
-      std::move(dummy_channel_parcelable));
-  EXPECT_TRUE(dummy_producer_parcelable.IsValid());
+  EXPECT_TRUE(fake_channel_parcelable->IsValid());
+  ProducerQueueParcelable fake_producer_parcelable(
+      std::move(fake_channel_parcelable));
+  EXPECT_TRUE(fake_producer_parcelable.IsValid());
 
   // Disconnect producer can be taken out, but only to an invalid parcelable.
   ASSERT_EQ(mProducer->disconnect(kTestApi), OK);
-  EXPECT_EQ(mProducer->TakeAsParcelable(&dummy_producer_parcelable), BAD_VALUE);
+  EXPECT_EQ(mProducer->TakeAsParcelable(&fake_producer_parcelable), BAD_VALUE);
   EXPECT_FALSE(producer_parcelable.IsValid());
   EXPECT_EQ(mProducer->TakeAsParcelable(&producer_parcelable), OK);
   EXPECT_TRUE(producer_parcelable.IsValid());
@@ -583,7 +583,7 @@
 
   // But connect to API will fail.
   IGraphicBufferProducer::QueueBufferOutput output;
-  EXPECT_EQ(mProducer->connect(kDummyListener, kTestApi, kTestControlledByApp,
+  EXPECT_EQ(mProducer->connect(kStubListener, kTestApi, kTestControlledByApp,
                                &output),
             BAD_VALUE);
 
@@ -592,8 +592,8 @@
   sp<BufferHubProducer> new_producer =
       BufferHubProducer::Create(std::move(producer_parcelable));
   ASSERT_TRUE(new_producer != nullptr);
-  EXPECT_EQ(new_producer->connect(kDummyListener, kTestApi,
-                                  kTestControlledByApp, &output),
+  EXPECT_EQ(new_producer->connect(kStubListener, kTestApi, kTestControlledByApp,
+                                  &output),
             OK);
 }
 
diff --git a/libs/vr/libdisplay/display_client.cpp b/libs/vr/libdisplay/display_client.cpp
index f67e258..62856df 100644
--- a/libs/vr/libdisplay/display_client.cpp
+++ b/libs/vr/libdisplay/display_client.cpp
@@ -178,6 +178,10 @@
   return status;
 }
 
+Status<uint8_t> DisplayClient::GetDisplayIdentificationPort() {
+  return InvokeRemoteMethod<DisplayProtocol::GetDisplayIdentificationPort>();
+}
+
 Status<std::unique_ptr<Surface>> DisplayClient::CreateSurface(
     const SurfaceAttributes& attributes) {
   int error;
diff --git a/libs/vr/libdisplay/include/private/dvr/display_client.h b/libs/vr/libdisplay/include/private/dvr/display_client.h
index f8f5b3d..81546ac 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_client.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_client.h
@@ -72,6 +72,7 @@
  public:
   pdx::Status<Metrics> GetDisplayMetrics();
   pdx::Status<std::string> GetConfigurationData(ConfigFileType config_type);
+  pdx::Status<uint8_t> GetDisplayIdentificationPort();
   pdx::Status<std::unique_ptr<IonBuffer>> SetupGlobalBuffer(
       DvrGlobalBufferKey key, size_t size, uint64_t usage);
   pdx::Status<void> DeleteGlobalBuffer(DvrGlobalBufferKey key);
diff --git a/libs/vr/libdisplay/include/private/dvr/display_protocol.h b/libs/vr/libdisplay/include/private/dvr/display_protocol.h
index 3786d1d..9f4cc4a 100644
--- a/libs/vr/libdisplay/include/private/dvr/display_protocol.h
+++ b/libs/vr/libdisplay/include/private/dvr/display_protocol.h
@@ -191,7 +191,8 @@
 enum class ConfigFileType : uint32_t {
   kLensMetrics,
   kDeviceMetrics,
-  kDeviceConfiguration
+  kDeviceConfiguration,
+  kDeviceEdid
 };
 
 struct DisplayProtocol {
@@ -210,6 +211,7 @@
     kOpGetSurfaceInfo,
     kOpCreateQueue,
     kOpSetAttributes,
+    kOpGetDisplayIdentificationPort,
   };
 
   // Aliases.
@@ -220,6 +222,8 @@
   PDX_REMOTE_METHOD(GetMetrics, kOpGetMetrics, Metrics(Void));
   PDX_REMOTE_METHOD(GetConfigurationData, kOpGetConfigurationData,
                     std::string(ConfigFileType config_type));
+  PDX_REMOTE_METHOD(GetDisplayIdentificationPort,
+                    kOpGetDisplayIdentificationPort, uint8_t(Void));
   PDX_REMOTE_METHOD(SetupGlobalBuffer, kOpSetupGlobalBuffer,
                     LocalNativeBufferHandle(DvrGlobalBufferKey key, size_t size,
                                             uint64_t usage));
diff --git a/libs/vr/libdvr/include/dvr/dvr_api.h b/libs/vr/libdvr/include/dvr/dvr_api.h
index e383bb2..b7abb99 100644
--- a/libs/vr/libdvr/include/dvr/dvr_api.h
+++ b/libs/vr/libdvr/include/dvr/dvr_api.h
@@ -85,6 +85,8 @@
   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
diff --git a/libs/vr/libpdx/encoder_performance_test.cpp b/libs/vr/libpdx/encoder_performance_test.cpp
index b7d94b3..7b477c4 100644
--- a/libs/vr/libpdx/encoder_performance_test.cpp
+++ b/libs/vr/libpdx/encoder_performance_test.cpp
@@ -158,12 +158,12 @@
                                            size_t iterations,
                                            ResetFunc* write_reset,
                                            void* reset_data, size_t data_size) {
-  std::vector<uint8_t> dummy_data(data_size);
+  std::vector<uint8_t> fake_data(data_size);
   auto start = std::chrono::high_resolution_clock::now();
   for (size_t i = 0; i < iterations; i++) {
     write_reset(reset_data);
-    memcpy(writer->GetNextWriteBufferSection(dummy_data.size()),
-           dummy_data.data(), dummy_data.size());
+    memcpy(writer->GetNextWriteBufferSection(fake_data.size()),
+           fake_data.data(), fake_data.size());
   }
   auto stop = std::chrono::high_resolution_clock::now();
   return stop - start;
@@ -177,17 +177,17 @@
     MessageReader* reader, MessageWriter* writer, size_t iterations,
     ResetFunc* read_reset, ResetFunc* write_reset, void* reset_data,
     size_t data_size) {
-  std::vector<uint8_t> dummy_data(data_size);
+  std::vector<uint8_t> fake_data(data_size);
   write_reset(reset_data);
-  memcpy(writer->GetNextWriteBufferSection(dummy_data.size()),
-         dummy_data.data(), dummy_data.size());
+  memcpy(writer->GetNextWriteBufferSection(fake_data.size()), fake_data.data(),
+         fake_data.size());
   auto start = std::chrono::high_resolution_clock::now();
   for (size_t i = 0; i < iterations; i++) {
     read_reset(reset_data);
     auto section = reader->GetNextReadBufferSection();
-    memcpy(dummy_data.data(), section.first, dummy_data.size());
+    memcpy(fake_data.data(), section.first, fake_data.size());
     reader->ConsumeReadBufferSectionData(
-        AdvancePointer(section.first, dummy_data.size()));
+        AdvancePointer(section.first, fake_data.size()));
   }
   auto stop = std::chrono::high_resolution_clock::now();
   return stop - start;
diff --git a/libs/vr/libpdx/private/pdx/rpc/macros.h b/libs/vr/libpdx/private/pdx/rpc/macros.h
index aeae9d3..99325b5 100644
--- a/libs/vr/libpdx/private/pdx/rpc/macros.h
+++ b/libs/vr/libpdx/private/pdx/rpc/macros.h
@@ -28,7 +28,7 @@
 // Clears any remaining contents wrapped in parentheses.
 #define _PDX_CLEAR(...)
 
-// Introduces a first dummy argument and _PDX_CLEAR as second argument.
+// Introduces a first stub argument and _PDX_CLEAR as second argument.
 #define _PDX_CLEAR_IF_LAST() _, _PDX_CLEAR
 
 // Returns the first argument of a list.
@@ -45,7 +45,7 @@
 // Returns next_func if the next element is not (), or _PDX_CLEAR
 // otherwise.
 //
-// _PDX_CLEAR_IF_LAST inserts an extra first dummy argument if peek is ().
+// _PDX_CLEAR_IF_LAST inserts an extra first stub argument if peek is ().
 #define _PDX_NEXT_FUNC(next_element, next_func) \
   _PDX_EXPAND_NEXT_FUNC(_PDX_CLEAR_IF_LAST next_element, next_func)
 
diff --git a/libs/vr/libpdx/service_dispatcher.cpp b/libs/vr/libpdx/service_dispatcher.cpp
index b112fa3..ba0d69c 100644
--- a/libs/vr/libpdx/service_dispatcher.cpp
+++ b/libs/vr/libpdx/service_dispatcher.cpp
@@ -92,9 +92,9 @@
   if (thread_count_ > 0)
     return -EBUSY;
 
-  epoll_event dummy;  // See BUGS in man 2 epoll_ctl.
+  epoll_event ee;  // See BUGS in man 2 epoll_ctl.
   if (epoll_ctl(epoll_fd_.Get(), EPOLL_CTL_DEL, service->endpoint()->epoll_fd(),
-                &dummy) < 0) {
+                &ee) < 0) {
     ALOGE("Failed to remove service from dispatcher because: %s\n",
           strerror(errno));
     return -errno;
diff --git a/libs/vr/libpdx_uds/service_endpoint.cpp b/libs/vr/libpdx_uds/service_endpoint.cpp
index 9bc70ea..810eb19 100644
--- a/libs/vr/libpdx_uds/service_endpoint.cpp
+++ b/libs/vr/libpdx_uds/service_endpoint.cpp
@@ -334,8 +334,8 @@
 
   int channel_fd = iter->second.data_fd.Get();
   Status<void> status;
-  epoll_event dummy;  // See BUGS in man 2 epoll_ctl.
-  if (epoll_ctl(epoll_fd_.Get(), EPOLL_CTL_DEL, channel_fd, &dummy) < 0) {
+  epoll_event ee;  // See BUGS in man 2 epoll_ctl.
+  if (epoll_ctl(epoll_fd_.Get(), EPOLL_CTL_DEL, channel_fd, &ee) < 0) {
     status.SetError(errno);
     ALOGE(
         "Endpoint::CloseChannelLocked: Failed to remove channel from endpoint: "
diff --git a/libs/vr/libvrflinger/Android.bp b/libs/vr/libvrflinger/Android.bp
index 12ce74b..abc64bd 100644
--- a/libs/vr/libvrflinger/Android.bp
+++ b/libs/vr/libvrflinger/Android.bp
@@ -35,11 +35,12 @@
 ]
 
 sharedLibraries = [
-    "android.frameworks.vr.composer@1.0",
+    "android.frameworks.vr.composer@2.0",
     "android.hardware.graphics.allocator@2.0",
     "android.hardware.graphics.composer@2.1",
     "android.hardware.graphics.composer@2.2",
     "android.hardware.graphics.composer@2.3",
+    "android.hardware.graphics.composer@2.4",
     "libbinder",
     "libbase",
     "libbufferhubqueue",
@@ -65,6 +66,7 @@
     "android.hardware.graphics.composer@2.1-command-buffer",
     "android.hardware.graphics.composer@2.2-command-buffer",
     "android.hardware.graphics.composer@2.3-command-buffer",
+    "android.hardware.graphics.composer@2.4-command-buffer",
     "libdvr_headers",
     "libsurfaceflinger_headers",
 ]
diff --git a/libs/vr/libvrflinger/display_service.cpp b/libs/vr/libvrflinger/display_service.cpp
index 87162c0..582fed3 100644
--- a/libs/vr/libvrflinger/display_service.cpp
+++ b/libs/vr/libvrflinger/display_service.cpp
@@ -18,6 +18,8 @@
 #include <private/dvr/trusted_uids.h>
 #include <private/dvr/types.h>
 
+#include "DisplayHardware/DisplayIdentification.h"
+
 using android::dvr::display::DisplayProtocol;
 using android::pdx::Channel;
 using android::pdx::ErrorStatus;
@@ -139,6 +141,11 @@
           *this, &DisplayService::OnGetConfigurationData, message);
       return {};
 
+    case DisplayProtocol::GetDisplayIdentificationPort::Opcode:
+      DispatchRemoteMethod<DisplayProtocol::GetDisplayIdentificationPort>(
+          *this, &DisplayService::OnGetDisplayIdentificationPort, message);
+      return {};
+
     case DisplayProtocol::CreateSurface::Opcode:
       DispatchRemoteMethod<DisplayProtocol::CreateSurface>(
           *this, &DisplayService::OnCreateSurface, message);
@@ -194,6 +201,7 @@
 pdx::Status<std::string> DisplayService::OnGetConfigurationData(
     pdx::Message& /*message*/, display::ConfigFileType config_type) {
   std::string property_name;
+  DisplayIdentificationData display_identification_data;
   switch (config_type) {
     case display::ConfigFileType::kLensMetrics:
       property_name = kDvrLensMetricsProperty;
@@ -204,6 +212,14 @@
     case display::ConfigFileType::kDeviceConfiguration:
       property_name = kDvrDeviceConfigProperty;
       break;
+    case display::ConfigFileType::kDeviceEdid:
+      display_identification_data =
+          hardware_composer_.GetCurrentDisplayIdentificationData();
+      if (display_identification_data.size() == 0) {
+        return ErrorStatus(ENOENT);
+      }
+      return std::string(display_identification_data.begin(),
+                         display_identification_data.end());
     default:
       return ErrorStatus(EINVAL);
   }
@@ -220,6 +236,11 @@
   return std::move(data);
 }
 
+pdx::Status<uint8_t> DisplayService::OnGetDisplayIdentificationPort(
+    pdx::Message& /*message*/) {
+  return hardware_composer_.GetCurrentDisplayPort();
+}
+
 // Creates a new DisplaySurface and associates it with this channel. This may
 // only be done once per channel.
 Status<display::SurfaceInfo> DisplayService::OnCreateSurface(
diff --git a/libs/vr/libvrflinger/display_service.h b/libs/vr/libvrflinger/display_service.h
index e0f2edd..89f1eae 100644
--- a/libs/vr/libvrflinger/display_service.h
+++ b/libs/vr/libvrflinger/display_service.h
@@ -80,6 +80,7 @@
   pdx::Status<display::Metrics> OnGetMetrics(pdx::Message& message);
   pdx::Status<std::string> OnGetConfigurationData(
       pdx::Message& message, display::ConfigFileType config_type);
+  pdx::Status<uint8_t> OnGetDisplayIdentificationPort(pdx::Message& message);
   pdx::Status<display::SurfaceInfo> OnCreateSurface(
       pdx::Message& message, const display::SurfaceAttributes& attributes);
   pdx::Status<BorrowedNativeBufferHandle> OnSetupGlobalBuffer(
diff --git a/libs/vr/libvrflinger/epoll_event_dispatcher.cpp b/libs/vr/libvrflinger/epoll_event_dispatcher.cpp
index 1cf5f17..0d5eb80 100644
--- a/libs/vr/libvrflinger/epoll_event_dispatcher.cpp
+++ b/libs/vr/libvrflinger/epoll_event_dispatcher.cpp
@@ -68,8 +68,8 @@
   ALOGD_IF(TRACE, "EpollEventDispatcher::RemoveEventHandler: fd=%d", fd);
   std::lock_guard<std::mutex> lock(lock_);
 
-  epoll_event dummy;  // See BUGS in man 2 epoll_ctl.
-  if (epoll_ctl(epoll_fd_.Get(), EPOLL_CTL_DEL, fd, &dummy) < 0) {
+  epoll_event ee;  // See BUGS in man 2 epoll_ctl.
+  if (epoll_ctl(epoll_fd_.Get(), EPOLL_CTL_DEL, fd, &ee) < 0) {
     const int error = errno;
     ALOGE("Failed to remove fd from epoll set because: %s", strerror(error));
     return pdx::ErrorStatus(error);
diff --git a/libs/vr/libvrflinger/hardware_composer.cpp b/libs/vr/libvrflinger/hardware_composer.cpp
index 57a77cf..70f303b 100644
--- a/libs/vr/libvrflinger/hardware_composer.cpp
+++ b/libs/vr/libvrflinger/hardware_composer.cpp
@@ -50,8 +50,6 @@
 
 const char kRightEyeOffsetProperty[] = "dvr.right_eye_offset_ns";
 
-const char kUseExternalDisplayProperty[] = "persist.vr.use_external_display";
-
 // Surface flinger uses "VSYNC-sf" and "VSYNC-app" for its version of these
 // events. Name ours similarly.
 const char kVsyncTraceEventName[] = "VSYNC-vrflinger";
@@ -138,6 +136,20 @@
   composer_callback_->SetVsyncService(nullptr);
 }
 
+void HardwareComposer::UpdateEdidData(Hwc2::Composer* composer,
+                                      hwc2_display_t hw_id) {
+  const auto error = composer->getDisplayIdentificationData(
+      hw_id, &display_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("hardware_composer: identification data error\n");
+    } else {
+      ALOGI("hardware_composer: identification data unsupported\n");
+    }
+  }
+}
+
 bool HardwareComposer::Initialize(
     Hwc2::Composer* composer, hwc2_display_t primary_display_id,
     RequestDisplayCallback request_display_callback) {
@@ -163,6 +175,8 @@
       "HardwareComposer: Failed to create interrupt event fd : %s",
       strerror(errno));
 
+  UpdateEdidData(composer, primary_display_id);
+
   post_thread_ = std::thread(&HardwareComposer::PostThread, this);
 
   initialized_ = true;
@@ -932,18 +946,9 @@
       external_display_ = GetDisplayParams(composer_.get(),
           *displays.external_display, /*is_primary*/ false);
 
-      if (property_get_bool(kUseExternalDisplayProperty, false)) {
-        ALOGI("External display connected. Switching to external display.");
-        target_display_ = &(*external_display_);
-        target_display_changed = true;
-      } else {
-        ALOGI("External display connected, but sysprop %s is unset, so"
-              " using primary display.", kUseExternalDisplayProperty);
-        if (was_using_external_display) {
-          target_display_ = &primary_display_;
-          target_display_changed = true;
-        }
-      }
+      ALOGI("External display connected. Switching to external display.");
+      target_display_ = &(*external_display_);
+      target_display_changed = true;
     } else {
       // External display was disconnected
       external_display_ = std::nullopt;
@@ -966,6 +971,9 @@
       EnableDisplay(*external_display_, false);
     }
 
+    // Update the cached edid data for the current display.
+    UpdateEdidData(composer_.get(), target_display_->id);
+
     // Turn the new target display on.
     EnableDisplay(*target_display_, true);
 
@@ -1160,6 +1168,26 @@
   return Void();
 }
 
+Return<void> HardwareComposer::ComposerCallback::onVsync_2_4(
+    Hwc2::Display /*display*/, int64_t /*timestamp*/,
+    Hwc2::VsyncPeriodNanos /*vsyncPeriodNanos*/) {
+  LOG_ALWAYS_FATAL("Unexpected onVsync_2_4 callback");
+  return Void();
+}
+
+Return<void> HardwareComposer::ComposerCallback::onVsyncPeriodTimingChanged(
+    Hwc2::Display /*display*/,
+    const Hwc2::VsyncPeriodChangeTimeline& /*updatedTimeline*/) {
+  LOG_ALWAYS_FATAL("Unexpected onVsyncPeriodTimingChanged callback");
+  return Void();
+}
+
+Return<void> HardwareComposer::ComposerCallback::onSeamlessPossible(
+    Hwc2::Display /*display*/) {
+  LOG_ALWAYS_FATAL("Unexpected onSeamlessPossible callback");
+  return Void();
+}
+
 void HardwareComposer::ComposerCallback::SetVsyncService(
     const sp<VsyncService>& vsync_service) {
   std::lock_guard<std::mutex> lock(mutex_);
diff --git a/libs/vr/libvrflinger/hardware_composer.h b/libs/vr/libvrflinger/hardware_composer.h
index db0d6a7..bfce10b 100644
--- a/libs/vr/libvrflinger/hardware_composer.h
+++ b/libs/vr/libvrflinger/hardware_composer.h
@@ -25,6 +25,7 @@
 #include <private/dvr/shared_buffer_helpers.h>
 #include <private/dvr/vsync_service.h>
 
+#include "DisplayHardware/DisplayIdentification.h"
 #include "acquired_buffer.h"
 #include "display_surface.h"
 
@@ -334,6 +335,14 @@
   int OnNewGlobalBuffer(DvrGlobalBufferKey key, IonBuffer& ion_buffer);
   void OnDeletedGlobalBuffer(DvrGlobalBufferKey key);
 
+  // Gets the edid data for the current active display (internal or external)
+  DisplayIdentificationData GetCurrentDisplayIdentificationData() {
+    return display_identification_data_;
+  }
+
+  // Gets the edid port for the current active display (internal or external)
+  uint8_t GetCurrentDisplayPort() { return display_port_; }
+
  private:
   DisplayParams GetDisplayParams(Hwc2::Composer* composer,
       hwc2_display_t display, bool is_primary);
@@ -366,6 +375,13 @@
     hardware::Return<void> onRefresh(Hwc2::Display display) override;
     hardware::Return<void> onVsync(Hwc2::Display display,
                                    int64_t timestamp) override;
+    hardware::Return<void> onVsync_2_4(
+        Hwc2::Display display, int64_t timestamp,
+        Hwc2::VsyncPeriodNanos vsyncPeriodNanos) override;
+    hardware::Return<void> onVsyncPeriodTimingChanged(
+        Hwc2::Display display,
+        const Hwc2::VsyncPeriodChangeTimeline& updatedTimeline) override;
+    hardware::Return<void> onSeamlessPossible(Hwc2::Display display) override;
 
     bool GotFirstHotplug() { return got_first_hotplug_; }
     void SetVsyncService(const sp<VsyncService>& vsync_service);
@@ -544,6 +560,11 @@
   bool vsync_trace_parity_ = false;
   sp<VsyncService> vsync_service_;
 
+  // Edid section.
+  void UpdateEdidData(Hwc2::Composer* composer, hwc2_display_t hw_id);
+  DisplayIdentificationData display_identification_data_;
+  uint8_t display_port_;
+
   static constexpr int kPostThreadInterrupted = 1;
 
   HardwareComposer(const HardwareComposer&) = delete;
diff --git a/libs/vr/libvrflinger/tests/Android.bp b/libs/vr/libvrflinger/tests/Android.bp
index 410e234..7fafd3b 100644
--- a/libs/vr/libvrflinger/tests/Android.bp
+++ b/libs/vr/libvrflinger/tests/Android.bp
@@ -11,6 +11,7 @@
     "libutils",
     "libnativewindow",
     "libpdx_default_transport",
+    "libSurfaceFlingerProp",
 ]
 
 static_libs = [
@@ -32,5 +33,6 @@
         "-Wall",
         "-Werror",
     ],
+    header_libs: ["libsurfaceflinger_headers"],
     name: "vrflinger_test",
 }
diff --git a/libs/vr/libvrflinger/tests/vrflinger_test.cpp b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
index 3b449f2..ac44f74 100644
--- a/libs/vr/libvrflinger/tests/vrflinger_test.cpp
+++ b/libs/vr/libvrflinger/tests/vrflinger_test.cpp
@@ -1,3 +1,4 @@
+#include <SurfaceFlingerProperties.h>
 #include <android/hardware/configstore/1.0/ISurfaceFlingerConfigs.h>
 #include <android/hardware/configstore/1.1/types.h>
 #include <android/hardware_buffer.h>
@@ -144,9 +145,7 @@
   // Exit immediately if the device doesn't support vr flinger. This ConfigStore
   // check is the same mechanism used by surface flinger to decide if it should
   // initialize vr flinger.
-  bool vr_flinger_enabled =
-      getBool<ISurfaceFlingerConfigs, &ISurfaceFlingerConfigs::useVrFlinger>(
-          false);
+  bool vr_flinger_enabled = android::sysprop::use_vr_flinger(false);
   if (!vr_flinger_enabled) {
     return;
   }