diff --git a/services/surfaceflinger/Android.bp b/services/surfaceflinger/Android.bp
index b404836..213a62e 100644
--- a/services/surfaceflinger/Android.bp
+++ b/services/surfaceflinger/Android.bp
@@ -29,6 +29,7 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
         "android.hardware.power@1.0",
         "android.hardware.power@1.3",
         "libbase",
@@ -92,6 +93,7 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
         "android.hardware.power@1.3",
         "libhidlbase",
     ],
diff --git a/services/surfaceflinger/CompositionEngine/Android.bp b/services/surfaceflinger/CompositionEngine/Android.bp
index fcb94fd..ae237e1 100644
--- a/services/surfaceflinger/CompositionEngine/Android.bp
+++ b/services/surfaceflinger/CompositionEngine/Android.bp
@@ -10,6 +10,7 @@
         "android.hardware.graphics.composer@2.1",
         "android.hardware.graphics.composer@2.2",
         "android.hardware.graphics.composer@2.3",
+        "android.hardware.graphics.composer@2.4",
         "android.hardware.power@1.0",
         "android.hardware.power@1.3",
         "libbase",
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
index e53d099..acddc42 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.cpp
@@ -17,9 +17,11 @@
 #undef LOG_TAG
 #define LOG_TAG "HwcComposer"
 
-#include <inttypes.h>
 #include <log/log.h>
 
+#include <algorithm>
+#include <cinttypes>
+
 #include "ComposerHal.h"
 
 #include <composer-command-buffer/2.2/ComposerCommandBuffer.h>
@@ -173,7 +175,16 @@
         LOG_ALWAYS_FATAL("failed to get hwcomposer service");
     }
 
-    if (sp<IComposer> composer_2_3 = IComposer::castFrom(mComposer)) {
+    if (sp<IComposer> composer_2_4 = IComposer::castFrom(mComposer)) {
+        composer_2_4->createClient_2_4([&](const auto& tmpError, const auto& tmpClient) {
+            if (tmpError == Error::NONE) {
+                mClient = tmpClient;
+                mClient_2_2 = tmpClient;
+                mClient_2_3 = tmpClient;
+                mClient_2_4 = tmpClient;
+            }
+        });
+    } else if (sp<V2_3::IComposer> composer_2_3 = V2_3::IComposer::castFrom(mComposer)) {
         composer_2_3->createClient_2_3([&](const auto& tmpError, const auto& tmpClient) {
             if (tmpError == Error::NONE) {
                 mClient = tmpClient;
@@ -456,23 +467,6 @@
     return Error::NONE;
 }
 
-Error Composer::getDisplayType(Display display,
-        IComposerClient::DisplayType* outType)
-{
-    Error error = kDefaultError;
-    mClient->getDisplayType(display,
-            [&](const auto& tmpError, const auto& tmpType) {
-                error = tmpError;
-                if (error != Error::NONE) {
-                    return;
-                }
-
-                *outType = tmpType;
-            });
-
-    return error;
-}
-
 Error Composer::getDozeSupport(Display display, bool* outSupport)
 {
     Error error = kDefaultError;
@@ -1113,23 +1107,6 @@
     return error;
 }
 
-Error Composer::getDisplayCapabilities(Display display,
-                                       std::vector<DisplayCapability>* outCapabilities) {
-    if (!mClient_2_3) {
-        return Error::UNSUPPORTED;
-    }
-    Error error = kDefaultError;
-    mClient_2_3->getDisplayCapabilities(display,
-                                        [&](const auto& tmpError, const auto& tmpCapabilities) {
-                                            error = tmpError;
-                                            if (error != Error::NONE) {
-                                                return;
-                                            }
-                                            *outCapabilities = tmpCapabilities;
-                                        });
-    return error;
-}
-
 Error Composer::setDisplayContentSamplingEnabled(Display display, bool enabled,
                                                  uint8_t componentMask, uint64_t maxFrames) {
     if (!mClient_2_3) {
@@ -1187,6 +1164,60 @@
     return mClient_2_3->setDisplayBrightness(display, brightness);
 }
 
+// Composer HAL 2.4
+
+Error Composer::getDisplayCapabilities(Display display,
+                                       std::vector<DisplayCapability>* outCapabilities) {
+    if (!mClient_2_3) {
+        return Error::UNSUPPORTED;
+    }
+
+    Error error = kDefaultError;
+    if (mClient_2_4) {
+        mClient_2_4->getDisplayCapabilities_2_4(display,
+                                                [&](const auto& tmpError, const auto& tmpCaps) {
+                                                    error = tmpError;
+                                                    if (error != Error::NONE) {
+                                                        return;
+                                                    }
+                                                    *outCapabilities = tmpCaps;
+                                                });
+    } else {
+        mClient_2_3
+                ->getDisplayCapabilities(display, [&](const auto& tmpError, const auto& tmpCaps) {
+                    error = tmpError;
+                    if (error != Error::NONE) {
+                        return;
+                    }
+
+                    outCapabilities->resize(tmpCaps.size());
+                    std::transform(tmpCaps.begin(), tmpCaps.end(), outCapabilities->begin(),
+                                   [](auto cap) { return static_cast<DisplayCapability>(cap); });
+                });
+    }
+
+    return error;
+}
+
+Error Composer::getDisplayConnectionType(Display display,
+                                         IComposerClient::DisplayConnectionType* outType) {
+    if (!mClient_2_4) {
+        return Error::UNSUPPORTED;
+    }
+
+    Error error = kDefaultError;
+    mClient_2_4->getDisplayConnectionType(display, [&](const auto& tmpError, const auto& tmpType) {
+        error = tmpError;
+        if (error != Error::NONE) {
+            return;
+        }
+
+        *outType = tmpType;
+    });
+
+    return error;
+}
+
 CommandReader::~CommandReader()
 {
     resetData();
diff --git a/services/surfaceflinger/DisplayHardware/ComposerHal.h b/services/surfaceflinger/DisplayHardware/ComposerHal.h
index 9f6cac2..e743e59 100644
--- a/services/surfaceflinger/DisplayHardware/ComposerHal.h
+++ b/services/surfaceflinger/DisplayHardware/ComposerHal.h
@@ -27,8 +27,8 @@
 #include <android/frameworks/vr/composer/2.0/IVrComposerClient.h>
 #endif // defined(USE_VR_COMPOSER) && USE_VR_COMPOSER
 #include <android/hardware/graphics/common/1.1/types.h>
-#include <android/hardware/graphics/composer/2.3/IComposer.h>
-#include <android/hardware/graphics/composer/2.3/IComposerClient.h>
+#include <android/hardware/graphics/composer/2.4/IComposer.h>
+#include <android/hardware/graphics/composer/2.4/IComposerClient.h>
 #include <composer-command-buffer/2.3/ComposerCommandBuffer.h>
 #include <gui/HdrMetadata.h>
 #include <math/mat4.h>
@@ -49,6 +49,7 @@
 namespace V2_1 = hardware::graphics::composer::V2_1;
 namespace V2_2 = hardware::graphics::composer::V2_2;
 namespace V2_3 = hardware::graphics::composer::V2_3;
+namespace V2_4 = hardware::graphics::composer::V2_4;
 
 using types::V1_0::ColorTransform;
 using types::V1_0::Transform;
@@ -65,8 +66,8 @@
 using V2_1::Layer;
 using V2_3::CommandReaderBase;
 using V2_3::CommandWriterBase;
-using V2_3::IComposer;
-using V2_3::IComposerClient;
+using V2_4::IComposer;
+using V2_4::IComposerClient;
 using DisplayCapability = IComposerClient::DisplayCapability;
 using PerFrameMetadata = IComposerClient::PerFrameMetadata;
 using PerFrameMetadataKey = IComposerClient::PerFrameMetadataKey;
@@ -118,7 +119,6 @@
                                      std::vector<Layer>* outLayers,
                                      std::vector<uint32_t>* outLayerRequestMasks) = 0;
 
-    virtual Error getDisplayType(Display display, IComposerClient::DisplayType* outType) = 0;
     virtual Error getDozeSupport(Display display, bool* outSupport) = 0;
     virtual Error getHdrCapabilities(Display display, std::vector<Hdr>* outTypes,
                                      float* outMaxLuminance, float* outMaxAverageLuminance,
@@ -203,11 +203,15 @@
                                                    uint8_t componentMask, uint64_t maxFrames) = 0;
     virtual Error getDisplayedContentSample(Display display, uint64_t maxFrames, uint64_t timestamp,
                                             DisplayedFrameStats* outStats) = 0;
-    virtual Error getDisplayCapabilities(Display display,
-                                         std::vector<DisplayCapability>* outCapabilities) = 0;
     virtual Error setLayerPerFrameMetadataBlobs(
             Display display, Layer layer, const std::vector<PerFrameMetadataBlob>& metadata) = 0;
     virtual Error setDisplayBrightness(Display display, float brightness) = 0;
+
+    // Composer HAL 2.4
+    virtual Error getDisplayCapabilities(Display display,
+                                         std::vector<DisplayCapability>* outCapabilities) = 0;
+    virtual Error getDisplayConnectionType(Display display,
+                                           IComposerClient::DisplayConnectionType* outType) = 0;
 };
 
 namespace impl {
@@ -334,7 +338,6 @@
                              std::vector<Layer>* outLayers,
                              std::vector<uint32_t>* outLayerRequestMasks) override;
 
-    Error getDisplayType(Display display, IComposerClient::DisplayType* outType) override;
     Error getDozeSupport(Display display, bool* outSupport) override;
     Error getHdrCapabilities(Display display, std::vector<Hdr>* outTypes, float* outMaxLuminance,
                              float* outMaxAverageLuminance, float* outMinLuminance) override;
@@ -414,13 +417,17 @@
                                            uint64_t maxFrames) override;
     Error getDisplayedContentSample(Display display, uint64_t maxFrames, uint64_t timestamp,
                                     DisplayedFrameStats* outStats) override;
-    Error getDisplayCapabilities(Display display,
-                                 std::vector<DisplayCapability>* outCapabilities) override;
     Error setLayerPerFrameMetadataBlobs(
             Display display, Layer layer,
             const std::vector<IComposerClient::PerFrameMetadataBlob>& metadata) override;
     Error setDisplayBrightness(Display display, float brightness) override;
 
+    // Composer HAL 2.4
+    Error getDisplayCapabilities(Display display,
+                                 std::vector<DisplayCapability>* outCapabilities) override;
+    Error getDisplayConnectionType(Display display,
+                                   IComposerClient::DisplayConnectionType* outType) override;
+
 private:
 #if defined(USE_VR_COMPOSER) && USE_VR_COMPOSER
     class CommandWriter : public CommandWriterBase {
@@ -455,7 +462,8 @@
 
     sp<V2_1::IComposerClient> mClient;
     sp<V2_2::IComposerClient> mClient_2_2;
-    sp<IComposerClient> mClient_2_3;
+    sp<V2_3::IComposerClient> mClient_2_3;
+    sp<IComposerClient> mClient_2_4;
 
     // 64KiB minus a small space for metadata such as read/write pointers
     static constexpr size_t kWriterInitialSize =
diff --git a/services/surfaceflinger/DisplayHardware/HWC2.cpp b/services/surfaceflinger/DisplayHardware/HWC2.cpp
index c463c4e..6f7428a 100644
--- a/services/surfaceflinger/DisplayHardware/HWC2.cpp
+++ b/services/surfaceflinger/DisplayHardware/HWC2.cpp
@@ -169,20 +169,8 @@
         }
         mDisplays.erase(displayId);
 
-        DisplayType displayType;
-        auto intError = mComposer->getDisplayType(displayId,
-                reinterpret_cast<Hwc2::IComposerClient::DisplayType *>(
-                        &displayType));
-        auto error = static_cast<Error>(intError);
-        if (error != Error::None) {
-            ALOGE("getDisplayType(%" PRIu64 ") failed: %s (%d). "
-                    "Aborting hotplug attempt.",
-                    displayId, to_string(error).c_str(), intError);
-            return;
-        }
-
         auto newDisplay = std::make_unique<impl::Display>(*mComposer.get(), mCapabilities,
-                                                          displayId, displayType);
+                                                          displayId, DisplayType::Physical);
         newDisplay->setConnected(true);
         mDisplays.emplace(displayId, std::move(newDisplay));
     } else if (connection == Connection::Disconnected) {
diff --git a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
index c949d7c..67faa57 100644
--- a/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
+++ b/services/surfaceflinger/tests/fakehwc/SFFakeHwc_test.cpp
@@ -127,7 +127,6 @@
 public:
     class MockComposerClient : public FakeComposerClient {
     public:
-        MOCK_METHOD2(getDisplayType, Error(Display display, ComposerClient::DisplayType* outType));
         MOCK_METHOD4(getDisplayAttribute,
                      Error(Display display, Config config, IComposerClient::Attribute attribute,
                            int32_t* outValue));
@@ -176,9 +175,6 @@
     android::hardware::ProcessState::self()->startThreadPool();
     android::ProcessState::self()->startThreadPool();
 
-    EXPECT_CALL(*mMockComposer, getDisplayType(PRIMARY_DISPLAY, _))
-            .WillOnce(DoAll(SetArgPointee<1>(IComposerClient::DisplayType::PHYSICAL),
-                            Return(Error::NONE)));
     // Primary display will be queried twice for all 5 attributes. One
     // set of queries comes from the SurfaceFlinger proper an the
     // other set from the VR composer.
@@ -270,10 +266,6 @@
 TEST_F(DisplayTest, Hotplug) {
     ALOGD("DisplayTest::Hotplug");
 
-    EXPECT_CALL(*mMockComposer, getDisplayType(EXTERNAL_DISPLAY, _))
-            .Times(2)
-            .WillRepeatedly(DoAll(SetArgPointee<1>(IComposerClient::DisplayType::PHYSICAL),
-                                  Return(Error::NONE)));
     // The attribute queries will get done twice. This is for defaults
     EXPECT_CALL(*mMockComposer, getDisplayAttribute(EXTERNAL_DISPLAY, 1, _, _))
             .Times(2 * 3)
@@ -381,10 +373,6 @@
 
     mMockComposer->clearFrames();
 
-    EXPECT_CALL(*mMockComposer, getDisplayType(PRIMARY_DISPLAY, _))
-            .Times(2)
-            .WillRepeatedly(DoAll(SetArgPointee<1>(IComposerClient::DisplayType::PHYSICAL),
-                                  Return(Error::NONE)));
     // The attribute queries will get done twice. This is for defaults
     EXPECT_CALL(*mMockComposer, getDisplayAttribute(PRIMARY_DISPLAY, 1, _, _))
             .Times(2 * 3)
diff --git a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
index fcce57b..ee1f3aa 100644
--- a/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
+++ b/services/surfaceflinger/tests/unittests/DisplayTransactionTest.cpp
@@ -445,10 +445,6 @@
     }
 
     static void setupHwcHotplugCallExpectations(DisplayTransactionTest* test) {
-        EXPECT_CALL(*test->mComposer, getDisplayType(HWC_DISPLAY_ID, _))
-                .WillOnce(DoAll(SetArgPointee<1>(static_cast<IComposerClient::DisplayType>(
-                                        HWC_DISPLAY_TYPE)),
-                                Return(Error::NONE)));
         EXPECT_CALL(*test->mComposer, setClientTargetSlotCount(_)).WillOnce(Return(Error::NONE));
         EXPECT_CALL(*test->mComposer, getDisplayConfigs(HWC_DISPLAY_ID, _))
                 .WillOnce(DoAll(SetArgPointee<1>(std::vector<unsigned>{HWC_ACTIVE_CONFIG_ID}),
diff --git a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
index 3c7e1da..98c6aa0 100644
--- a/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
+++ b/services/surfaceflinger/tests/unittests/mock/DisplayHardware/MockComposer.h
@@ -41,7 +41,7 @@
 using android::hardware::graphics::composer::V2_1::IComposer;
 using android::hardware::graphics::composer::V2_1::IComposerCallback;
 using android::hardware::graphics::composer::V2_1::Layer;
-using android::hardware::graphics::composer::V2_3::IComposerClient;
+using android::hardware::graphics::composer::V2_4::IComposerClient;
 
 class Composer : public Hwc2::Composer {
 public:
@@ -71,7 +71,6 @@
     MOCK_METHOD2(getDisplayName, Error(Display, std::string*));
     MOCK_METHOD4(getDisplayRequests,
                  Error(Display, uint32_t*, std::vector<Layer>*, std::vector<uint32_t>*));
-    MOCK_METHOD2(getDisplayType, Error(Display, IComposerClient::DisplayType*));
     MOCK_METHOD2(getDozeSupport, Error(Display, bool*));
     MOCK_METHOD5(getHdrCapabilities, Error(Display, std::vector<Hdr>*, float*, float*, float*));
     MOCK_METHOD1(getPerFrameMetadataKeys,
@@ -118,10 +117,11 @@
     MOCK_METHOD4(setDisplayContentSamplingEnabled, Error(Display, bool, uint8_t, uint64_t));
     MOCK_METHOD4(getDisplayedContentSample,
                  Error(Display, uint64_t, uint64_t, DisplayedFrameStats*));
-    MOCK_METHOD2(getDisplayCapabilities, Error(Display, std::vector<DisplayCapability>*));
     MOCK_METHOD3(setLayerPerFrameMetadataBlobs,
                  Error(Display, Layer, const std::vector<IComposerClient::PerFrameMetadataBlob>&));
     MOCK_METHOD2(setDisplayBrightness, Error(Display, float));
+    MOCK_METHOD2(getDisplayCapabilities, Error(Display, std::vector<DisplayCapability>*));
+    MOCK_METHOD2(getDisplayConnectionType, Error(Display, IComposerClient::DisplayConnectionType*));
 };
 
 } // namespace mock