diff --git a/power/aidl/default/Android.bp b/power/aidl/default/Android.bp
index d1257f3..da91ee6 100644
--- a/power/aidl/default/Android.bp
+++ b/power/aidl/default/Android.bp
@@ -35,6 +35,7 @@
     srcs: [
         "main.cpp",
         "Power.cpp",
+        "PowerHintSession.cpp",
     ],
 }
 
diff --git a/power/aidl/default/Power.cpp b/power/aidl/default/Power.cpp
index 7f08f44..8fe370c 100644
--- a/power/aidl/default/Power.cpp
+++ b/power/aidl/default/Power.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "Power.h"
+#include "PowerHintSession.h"
 
 #include <android-base/logging.h>
 
@@ -25,42 +26,53 @@
 namespace impl {
 namespace example {
 
+using namespace std::chrono_literals;
+
+using ndk::ScopedAStatus;
+
 const std::vector<Boost> BOOST_RANGE{ndk::enum_range<Boost>().begin(),
                                      ndk::enum_range<Boost>().end()};
 const std::vector<Mode> MODE_RANGE{ndk::enum_range<Mode>().begin(), ndk::enum_range<Mode>().end()};
 
-ndk::ScopedAStatus Power::setMode(Mode type, bool enabled) {
+ScopedAStatus Power::setMode(Mode type, bool enabled) {
     LOG(VERBOSE) << "Power setMode: " << static_cast<int32_t>(type) << " to: " << enabled;
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Power::isModeSupported(Mode type, bool* _aidl_return) {
+ScopedAStatus Power::isModeSupported(Mode type, bool* _aidl_return) {
     LOG(INFO) << "Power isModeSupported: " << static_cast<int32_t>(type);
     *_aidl_return = type >= MODE_RANGE.front() && type <= MODE_RANGE.back();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Power::setBoost(Boost type, int32_t durationMs) {
+ScopedAStatus Power::setBoost(Boost type, int32_t durationMs) {
     LOG(VERBOSE) << "Power setBoost: " << static_cast<int32_t>(type)
                  << ", duration: " << durationMs;
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Power::isBoostSupported(Boost type, bool* _aidl_return) {
+ScopedAStatus Power::isBoostSupported(Boost type, bool* _aidl_return) {
     LOG(INFO) << "Power isBoostSupported: " << static_cast<int32_t>(type);
     *_aidl_return = type >= BOOST_RANGE.front() && type <= BOOST_RANGE.back();
-    return ndk::ScopedAStatus::ok();
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Power::createHintSession(int32_t, int32_t, const std::vector<int32_t>&, int64_t,
-                                            std::shared_ptr<IPowerHintSession>* _aidl_return) {
-    *_aidl_return = nullptr;
-    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+ScopedAStatus Power::createHintSession(int32_t, int32_t, const std::vector<int32_t>& tids, int64_t,
+                                       std::shared_ptr<IPowerHintSession>* _aidl_return) {
+    if (tids.size() == 0) {
+        *_aidl_return = nullptr;
+        return ScopedAStatus::fromExceptionCode(EX_ILLEGAL_ARGUMENT);
+    }
+    std::shared_ptr<IPowerHintSession> powerHintSession =
+            ndk::SharedRefBase::make<PowerHintSession>();
+    mPowerHintSessions.push_back(powerHintSession);
+    *_aidl_return = powerHintSession;
+    return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Power::getHintSessionPreferredRate(int64_t* outNanoseconds) {
-    *outNanoseconds = -1;
-    return ndk::ScopedAStatus::fromExceptionCode(EX_UNSUPPORTED_OPERATION);
+ScopedAStatus Power::getHintSessionPreferredRate(int64_t* outNanoseconds) {
+    *outNanoseconds = std::chrono::nanoseconds(1ms).count();
+    return ScopedAStatus::ok();
 }
 
 }  // namespace example
diff --git a/power/aidl/default/Power.h b/power/aidl/default/Power.h
index ef6439d..7f8405e 100644
--- a/power/aidl/default/Power.h
+++ b/power/aidl/default/Power.h
@@ -26,6 +26,7 @@
 namespace example {
 
 class Power : public BnPower {
+  public:
     ndk::ScopedAStatus setMode(Mode type, bool enabled) override;
     ndk::ScopedAStatus isModeSupported(Mode type, bool* _aidl_return) override;
     ndk::ScopedAStatus setBoost(Boost type, int32_t durationMs) override;
@@ -35,6 +36,9 @@
                                          int64_t durationNanos,
                                          std::shared_ptr<IPowerHintSession>* _aidl_return) override;
     ndk::ScopedAStatus getHintSessionPreferredRate(int64_t* outNanoseconds) override;
+
+  private:
+    std::vector<std::shared_ptr<IPowerHintSession>> mPowerHintSessions;
 };
 
 }  // namespace example
diff --git a/power/aidl/default/PowerHintSession.cpp b/power/aidl/default/PowerHintSession.cpp
new file mode 100644
index 0000000..aa95be4
--- /dev/null
+++ b/power/aidl/default/PowerHintSession.cpp
@@ -0,0 +1,54 @@
+/*
+ * Copyright (C) 2022 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 "PowerHintSession.h"
+
+#include <android-base/logging.h>
+
+namespace aidl::android::hardware::power::impl::example {
+
+using ndk::ScopedAStatus;
+
+PowerHintSession::PowerHintSession() {}
+
+ScopedAStatus PowerHintSession::updateTargetWorkDuration(int64_t targetDurationNanos) {
+    LOG(VERBOSE) << __func__ << "target duration in nanoseconds: " << targetDurationNanos;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus PowerHintSession::reportActualWorkDuration(
+        const std::vector<WorkDuration>& /* durations */) {
+    LOG(VERBOSE) << __func__;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus PowerHintSession::pause() {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus PowerHintSession::resume() {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus PowerHintSession::close() {
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus PowerHintSession::sendHint(SessionHint /* hint */) {
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::power::impl::example
diff --git a/power/aidl/default/PowerHintSession.h b/power/aidl/default/PowerHintSession.h
new file mode 100644
index 0000000..6a7627a
--- /dev/null
+++ b/power/aidl/default/PowerHintSession.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2022 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/power/BnPowerHintSession.h>
+#include <aidl/android/hardware/power/SessionHint.h>
+#include <aidl/android/hardware/power/WorkDuration.h>
+
+namespace aidl::android::hardware::power::impl::example {
+
+class PowerHintSession : public BnPowerHintSession {
+  public:
+    explicit PowerHintSession();
+    ndk::ScopedAStatus updateTargetWorkDuration(int64_t targetDurationNanos) override;
+    ndk::ScopedAStatus reportActualWorkDuration(
+            const std::vector<WorkDuration>& durations) override;
+    ndk::ScopedAStatus pause() override;
+    ndk::ScopedAStatus resume() override;
+    ndk::ScopedAStatus close() override;
+    ndk::ScopedAStatus sendHint(SessionHint hint) override;
+};
+
+}  // namespace aidl::android::hardware::power::impl::example