diff --git a/Android.bp b/Android.bp
index ed1c6cf..b25ef36 100644
--- a/Android.bp
+++ b/Android.bp
@@ -99,6 +99,7 @@
     srcs: [
         "hwc3/Composer.cpp",
         "hwc3/ComposerClient.cpp",
+        "hwc3/DrmHwcThree.cpp",
     ],
 }
 
diff --git a/hwc3/DrmHwcThree.cpp b/hwc3/DrmHwcThree.cpp
new file mode 100644
index 0000000..62984b4
--- /dev/null
+++ b/hwc3/DrmHwcThree.cpp
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "DrmHwcThree.h"
+
+#include <cinttypes>
+
+namespace aidl::android::hardware::graphics::composer3::impl {
+
+void DrmHwcThree::Init(std::shared_ptr<IComposerCallback> callback) {
+  composer_callback_ = std::move(callback);
+  GetResMan().Init();
+}
+
+void DrmHwcThree::SendVsyncPeriodTimingChangedEventToClient(
+    uint64_t display_id, int64_t timestamp) const {
+  VsyncPeriodChangeTimeline timeline;
+  timeline.newVsyncAppliedTimeNanos = timestamp;
+  timeline.refreshRequired = false;
+  timeline.refreshTimeNanos = 0;
+
+  composer_callback_->onVsyncPeriodTimingChanged(static_cast<int64_t>(
+                                                     display_id),
+                                                 timeline);
+}
+
+void DrmHwcThree::SendRefreshEventToClient(uint64_t display_id) {
+  composer_callback_->onRefresh(static_cast<int64_t>(display_id));
+}
+
+void DrmHwcThree::SendVsyncEventToClient(uint64_t display_id, int64_t timestamp,
+                                         uint32_t vsync_period) const {
+  composer_callback_->onVsync(static_cast<int64_t>(display_id), timestamp,
+                              static_cast<int32_t>(vsync_period));
+}
+
+void DrmHwcThree::SendHotplugEventToClient(hwc2_display_t display_id,
+                                           bool connected) {
+  composer_callback_->onHotplug(static_cast<int64_t>(display_id), connected);
+}
+
+}  // namespace aidl::android::hardware::graphics::composer3::impl
diff --git a/hwc3/DrmHwcThree.h b/hwc3/DrmHwcThree.h
new file mode 100644
index 0000000..c2d4119
--- /dev/null
+++ b/hwc3/DrmHwcThree.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/graphics/composer3/IComposerCallback.h>
+
+#include "drm/DrmHwc.h"
+
+namespace aidl::android::hardware::graphics::composer3::impl {
+
+class DrmHwcThree : public ::android::DrmHwc {
+ public:
+  DrmHwcThree() = default;
+  ~DrmHwcThree() override = default;
+
+  void Init(std::shared_ptr<IComposerCallback> callback);
+
+  // DrmHwcInterface
+  void SendVsyncEventToClient(hwc2_display_t display_id, int64_t timestamp,
+                              uint32_t vsync_period) const override;
+  void SendVsyncPeriodTimingChangedEventToClient(
+      hwc2_display_t display_id, int64_t timestamp) const override;
+  void SendRefreshEventToClient(uint64_t display_id) override;
+  void SendHotplugEventToClient(hwc2_display_t display_id,
+                                bool connected) override;
+
+ private:
+  std::shared_ptr<IComposerCallback> composer_callback_;
+};
+}  // namespace aidl::android::hardware::graphics::composer3::impl
diff --git a/hwc3/meson.build b/hwc3/meson.build
index f91ea3c..b1eb9c3 100644
--- a/hwc3/meson.build
+++ b/hwc3/meson.build
@@ -2,6 +2,7 @@
 src_hwc3 = files(
     'ComposerClient.cpp',
     'Composer.cpp',
+    'DrmHwcThree.cpp',
     'service.cpp',
 )