diff --git a/soundtrigger/2.2/vts/functional/Android.bp b/soundtrigger/2.2/vts/functional/Android.bp
new file mode 100644
index 0000000..adbd018
--- /dev/null
+++ b/soundtrigger/2.2/vts/functional/Android.bp
@@ -0,0 +1,29 @@
+//
+// Copyright (C) 2018 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.
+//
+
+cc_test {
+    name: "VtsHalSoundtriggerV2_2TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalSoundtriggerV2_2TargetTest.cpp"],
+    static_libs: [
+                 "android.hidl.allocator@1.0",
+                 "android.hidl.memory@1.0",
+                 "android.hardware.soundtrigger@2.0",
+                 "android.hardware.soundtrigger@2.1",
+                 "android.hardware.soundtrigger@2.2",
+                 "libhidlmemory"
+                 ],
+}
diff --git a/soundtrigger/2.2/vts/functional/VtsHalSoundtriggerV2_2TargetTest.cpp b/soundtrigger/2.2/vts/functional/VtsHalSoundtriggerV2_2TargetTest.cpp
new file mode 100644
index 0000000..ed5149f
--- /dev/null
+++ b/soundtrigger/2.2/vts/functional/VtsHalSoundtriggerV2_2TargetTest.cpp
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2018 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.
+ */
+
+#define LOG_TAG "SoundTriggerHidlHalTest"
+#include <stdlib.h>
+#include <time.h>
+
+#include <condition_variable>
+#include <mutex>
+
+#include <android/log.h>
+#include <cutils/native_handle.h>
+#include <log/log.h>
+
+#include <android/hardware/audio/common/2.0/types.h>
+#include <android/hardware/soundtrigger/2.0/ISoundTriggerHw.h>
+#include <android/hardware/soundtrigger/2.2/ISoundTriggerHw.h>
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <VtsHalHidlTargetTestEnvBase.h>
+
+using ::android::sp;
+using ::android::hardware::Return;
+using ::android::hardware::soundtrigger::V2_0::ISoundTriggerHwCallback;
+using ::android::hardware::soundtrigger::V2_0::SoundModelHandle;
+using ::android::hardware::soundtrigger::V2_2::ISoundTriggerHw;
+
+// Test environment for SoundTrigger HIDL HAL.
+class SoundTriggerHidlEnvironment : public ::testing::VtsHalHidlTargetTestEnvBase {
+   public:
+    // get the test environment singleton
+    static SoundTriggerHidlEnvironment* Instance() {
+        static SoundTriggerHidlEnvironment* instance = new SoundTriggerHidlEnvironment;
+        return instance;
+    }
+
+    void registerTestServices() override { registerTestService<ISoundTriggerHw>(); }
+
+   private:
+    SoundTriggerHidlEnvironment() {}
+};
+
+// The main test class for Sound Trigger HIDL HAL.
+class SoundTriggerHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   public:
+    void SetUp() override {
+        mSoundTriggerHal = ::testing::VtsHalHidlTargetTestBase::getService<ISoundTriggerHw>(
+            SoundTriggerHidlEnvironment::Instance()->getServiceName<ISoundTriggerHw>());
+        ASSERT_NE(nullptr, mSoundTriggerHal.get());
+    }
+
+    static void SetUpTestCase() { srand(1234); }
+
+    void TearDown() override {}
+
+   protected:
+    sp<ISoundTriggerHw> mSoundTriggerHal;
+};
+
+/**
+ * Test ISoundTriggerHw::getModelState() method
+ *
+ * Verifies that:
+ *  - the implementation returns -EINVAL with invalid model handle
+ *
+ */
+TEST_F(SoundTriggerHidlTest, GetModelStateInvalidModel) {
+    int ret = android::OK;
+    ISoundTriggerHwCallback::RecognitionEvent event;
+    SoundModelHandle handle = 0;
+    Return<void> hidlReturn =
+        mSoundTriggerHal->getModelState(handle, [&](int32_t retval, auto res) {
+            ret = retval;
+            event = res;
+        });
+
+    EXPECT_TRUE(hidlReturn.isOk());
+    EXPECT_EQ(-ENOSYS, ret);
+}
+
+int main(int argc, char** argv) {
+    ::testing::AddGlobalTestEnvironment(SoundTriggerHidlEnvironment::Instance());
+    ::testing::InitGoogleTest(&argc, argv);
+    SoundTriggerHidlEnvironment::Instance()->init(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    ALOGI("Test result = %d", status);
+    return status;
+}