diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
index a272e72..1b40795 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerClient.h
@@ -172,7 +172,19 @@
         return Void();
     }
 
-   protected:
+    Return<void> getDisplayBrightnessSupport(
+            Display display, IComposerClient::getDisplayBrightnessSupport_cb hidl_cb) override {
+        bool support = false;
+        Error error = mHal->getDisplayBrightnessSupport(display, &support);
+        hidl_cb(error, support);
+        return Void();
+    }
+
+    Return<Error> setDisplayBrightness(Display display, float brightness) override {
+        return mHal->setDisplayBrightness(display, brightness);
+    }
+
+  protected:
     std::unique_ptr<V2_1::hal::ComposerCommandEngine> createCommandEngine() override {
         return std::make_unique<ComposerCommandEngine>(
             mHal, static_cast<V2_2::hal::ComposerResources*>(mResources.get()));
diff --git a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h
index a0812ad..186b004 100644
--- a/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h
+++ b/graphics/composer/2.3/utils/hal/include/composer-hal/2.3/ComposerHal.h
@@ -119,6 +119,8 @@
     virtual Error setLayerPerFrameMetadataBlobs(
         Display display, Layer layer,
         std::vector<IComposerClient::PerFrameMetadataBlob>& blobs) = 0;
+    virtual Error getDisplayBrightnessSupport(Display display, bool* outSupport) = 0;
+    virtual Error setDisplayBrightness(Display display, float brightness) = 0;
 };
 
 }  // namespace hal
diff --git a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
index 41e333a..070cf80 100644
--- a/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
+++ b/graphics/composer/2.3/utils/passthrough/include/composer-passthrough/2.3/HwcHal.h
@@ -245,7 +245,29 @@
         return static_cast<Error>(err);
     }
 
-   protected:
+    Error getDisplayBrightnessSupport(Display display, bool* outSupport) {
+        if (!mDispatch.getDisplayBrightnessSupport) {
+            return Error::UNSUPPORTED;
+        }
+        bool support = false;
+        int32_t error = mDispatch.getDisplayBrightnessSupport(mDevice, display, &support);
+        *outSupport = support;
+        return static_cast<Error>(error);
+    }
+
+    Error setDisplayBrightness(Display display, float brightness) {
+        if (std::isnan(brightness) || brightness > 1.0f ||
+            (brightness < 0.0f && brightness != -1.0f)) {
+            return Error::BAD_PARAMETER;
+        }
+        if (!mDispatch.setDisplayBrightness) {
+            return Error::UNSUPPORTED;
+        }
+        int32_t error = mDispatch.setDisplayBrightness(mDevice, display, brightness);
+        return static_cast<Error>(error);
+    }
+
+  protected:
     bool initDispatch() override {
         if (!BaseType2_2::initDispatch()) {
             return false;
@@ -265,6 +287,10 @@
                                    &mDispatch.getDisplayCapabilities);
         this->initOptionalDispatch(HWC2_FUNCTION_SET_LAYER_PER_FRAME_METADATA_BLOBS,
                                    &mDispatch.setLayerPerFrameMetadataBlobs);
+        this->initOptionalDispatch(HWC2_FUNCTION_GET_DISPLAY_BRIGHTNESS_SUPPORT,
+                                   &mDispatch.getDisplayBrightnessSupport);
+        this->initOptionalDispatch(HWC2_FUNCTION_SET_DISPLAY_BRIGHTNESS,
+                                   &mDispatch.setDisplayBrightness);
         return true;
     }
 
@@ -277,6 +303,8 @@
         HWC2_PFN_GET_DISPLAYED_CONTENT_SAMPLE getDisplayedContentSample;
         HWC2_PFN_GET_DISPLAY_CAPABILITIES getDisplayCapabilities;
         HWC2_PFN_SET_LAYER_PER_FRAME_METADATA_BLOBS setLayerPerFrameMetadataBlobs;
+        HWC2_PFN_GET_DISPLAY_BRIGHTNESS_SUPPORT getDisplayBrightnessSupport;
+        HWC2_PFN_SET_DISPLAY_BRIGHTNESS setDisplayBrightness;
     } mDispatch = {};
 
     using BaseType2_2 = V2_2::passthrough::detail::HwcHalImpl<Hal>;
diff --git a/graphics/composer/2.3/utils/vts/ComposerVts.cpp b/graphics/composer/2.3/utils/vts/ComposerVts.cpp
index 0e541ed..4de85d6 100644
--- a/graphics/composer/2.3/utils/vts/ComposerVts.cpp
+++ b/graphics/composer/2.3/utils/vts/ComposerVts.cpp
@@ -186,6 +186,19 @@
     return capabilities;
 }
 
+bool ComposerClient::getDisplayBrightnessSupport(Display display) {
+    bool support = false;
+    mClient->getDisplayBrightnessSupport(display, [&](const auto& error, const auto& tmpSupport) {
+        ASSERT_EQ(Error::NONE, error) << "failed to get brightness support";
+        support = tmpSupport;
+    });
+    return support;
+}
+
+Error ComposerClient::setDisplayBrightness(Display display, float brightness) {
+    return mClient->setDisplayBrightness(display, brightness);
+}
+
 }  // namespace vts
 }  // namespace V2_3
 }  // namespace composer
diff --git a/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
index ad4ef0b..a0e764d 100644
--- a/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
+++ b/graphics/composer/2.3/utils/vts/include/composer-vts/2.3/ComposerVts.h
@@ -52,7 +52,7 @@
 
     std::unique_ptr<ComposerClient> createClient();
 
-   protected:
+  protected:
     explicit Composer(const sp<IComposer>& composer);
 
    private:
@@ -99,7 +99,11 @@
 
     std::vector<IComposerClient::PerFrameMetadataKey> getPerFrameMetadataKeys_2_3(Display display);
 
-   private:
+    bool getDisplayBrightnessSupport(Display display);
+
+    Error setDisplayBrightness(Display display, float brightness);
+
+  private:
     const sp<IComposerClient> mClient;
 };