diff --git a/graphics/mapper/2.1/Android.bp b/graphics/mapper/2.1/Android.bp
new file mode 100644
index 0000000..971cd99
--- /dev/null
+++ b/graphics/mapper/2.1/Android.bp
@@ -0,0 +1,149 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.graphics.mapper@2.1_hal",
+    srcs: [
+        "IMapper.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.graphics.mapper@2.1_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.graphics.mapper@2.1",
+    srcs: [
+        ":android.hardware.graphics.mapper@2.1_hal",
+    ],
+    out: [
+        "android/hardware/graphics/mapper/2.1/MapperAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.graphics.mapper@2.1_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.graphics.mapper@2.1",
+    srcs: [
+        ":android.hardware.graphics.mapper@2.1_hal",
+    ],
+    out: [
+        "android/hardware/graphics/mapper/2.1/IMapper.h",
+        "android/hardware/graphics/mapper/2.1/IHwMapper.h",
+        "android/hardware/graphics/mapper/2.1/BnHwMapper.h",
+        "android/hardware/graphics/mapper/2.1/BpHwMapper.h",
+        "android/hardware/graphics/mapper/2.1/BsMapper.h",
+    ],
+}
+
+cc_library {
+    name: "android.hardware.graphics.mapper@2.1",
+    defaults: ["hidl-module-defaults"],
+    generated_sources: ["android.hardware.graphics.mapper@2.1_genc++"],
+    generated_headers: ["android.hardware.graphics.mapper@2.1_genc++_headers"],
+    export_generated_headers: ["android.hardware.graphics.mapper@2.1_genc++_headers"],
+    vendor_available: true,
+    vndk: {
+        enabled: true,
+        support_system_process: true,
+    },
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+    ],
+}
+
+genrule {
+    name: "android.hardware.graphics.mapper@2.1-adapter-helper_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.graphics.mapper@2.1",
+    srcs: [
+        ":android.hardware.graphics.mapper@2.1_hal",
+    ],
+    out: [
+        "android/hardware/graphics/mapper/2.1/AMapper.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.graphics.mapper@2.1-adapter-helper_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.graphics.mapper@2.1",
+    srcs: [
+        ":android.hardware.graphics.mapper@2.1_hal",
+    ],
+    out: [
+        "android/hardware/graphics/mapper/2.1/AMapper.h",
+    ],
+}
+
+
+cc_library {
+    name: "android.hardware.graphics.mapper@2.1-adapter-helper",
+    defaults: ["hidl-module-defaults"],
+    generated_sources: ["android.hardware.graphics.mapper@2.1-adapter-helper_genc++"],
+    generated_headers: ["android.hardware.graphics.mapper@2.1-adapter-helper_genc++_headers"],
+    export_generated_headers: ["android.hardware.graphics.mapper@2.1-adapter-helper_genc++_headers"],
+    vendor_available: true,
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "libhidladapter",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.0-adapter-helper",
+        "android.hidl.base@1.0-adapter-helper",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "libhidladapter",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.0-adapter-helper",
+        "android.hidl.base@1.0-adapter-helper",
+    ],
+}
+
+genrule {
+    name: "android.hardware.graphics.mapper@2.1-adapter_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-main -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.graphics.mapper@2.1",
+    out: ["main.cpp"]
+}
+
+cc_test {
+    name: "android.hardware.graphics.mapper@2.1-adapter",
+    shared_libs: [
+        "libhidladapter",
+        "libhidlbase",
+        "libhidltransport",
+        "libutils",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.1",
+        "android.hardware.graphics.mapper@2.1-adapter-helper",
+    ],
+    generated_sources: ["android.hardware.graphics.mapper@2.1-adapter_genc++"],
+}
diff --git a/graphics/mapper/2.1/IMapper.hal b/graphics/mapper/2.1/IMapper.hal
new file mode 100644
index 0000000..a23656d
--- /dev/null
+++ b/graphics/mapper/2.1/IMapper.hal
@@ -0,0 +1,61 @@
+/*
+ * Copyright 2017 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.
+ */
+
+package android.hardware.graphics.mapper@2.1;
+
+import android.hardware.graphics.mapper@2.0::Error;
+import android.hardware.graphics.mapper@2.0::IMapper;
+
+interface IMapper extends android.hardware.graphics.mapper@2.0::IMapper {
+    /**
+     * Validate that the buffer can be safely accessed by a caller who assumes
+     * the specified descriptorInfo and stride. This must at least validate
+     * that the buffer size is large enough. Validating the buffer against
+     * individual buffer attributes is optional.
+     *
+     * @param buffer is the buffer to validate against.
+     * @param descriptorInfo specifies the attributes of the buffer.
+     * @param stride is the buffer stride returned by IAllocator::allocate.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer is invalid.
+     *                  BAD_VALUE when buffer cannot be safely accessed
+     */
+    validateBufferSize(pointer buffer,
+                       BufferDescriptorInfo descriptorInfo,
+                       uint32_t stride)
+            generates (Error error);
+
+    /**
+     * Get the transport size of a buffer. An imported buffer handle is a raw
+     * buffer handle with the process-local runtime data appended. This
+     * function, for example, allows a caller to omit the process-local
+     * runtime data at the tail when serializing the imported buffer handle.
+     *
+     * Note that a client might or might not omit the process-local runtime
+     * data when sending an imported buffer handle. The mapper must support
+     * both cases on the receiving end.
+     *
+     * @param buffer is the buffer to get the transport size from.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer is invalid.
+     * @return numFds is the number of file descriptors needed for transport.
+     * @return numInts is the number of integers needed for transport.
+     */
+    getTransportSize(pointer buffer)
+            generates (Error error,
+                       uint32_t numFds,
+                       uint32_t numInts);
+};
diff --git a/graphics/mapper/2.1/vts/OWNERS b/graphics/mapper/2.1/vts/OWNERS
new file mode 100644
index 0000000..ef69d7c
--- /dev/null
+++ b/graphics/mapper/2.1/vts/OWNERS
@@ -0,0 +1,6 @@
+# Graphics team
+olv@google.com
+
+# VTS team
+yim@google.com
+zhuoyao@google.com
\ No newline at end of file
diff --git a/graphics/mapper/2.1/vts/functional/Android.bp b/graphics/mapper/2.1/vts/functional/Android.bp
new file mode 100644
index 0000000..578d298
--- /dev/null
+++ b/graphics/mapper/2.1/vts/functional/Android.bp
@@ -0,0 +1,32 @@
+//
+// Copyright (C) 2016 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: "VtsHalGraphicsMapperV2_1TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    srcs: ["VtsHalGraphicsMapperV2_1TargetTest.cpp"],
+    shared_libs: [
+        "libsync",
+    ],
+    static_libs: [
+        "android.hardware.graphics.allocator@2.0",
+        "android.hardware.graphics.common@1.0",
+        "android.hardware.graphics.mapper@2.0",
+        "android.hardware.graphics.mapper@2.1",
+        "libVtsHalGraphicsMapperTestUtils",
+        "libnativehelper",
+    ],
+}
diff --git a/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp b/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp
new file mode 100644
index 0000000..4067c8d
--- /dev/null
+++ b/graphics/mapper/2.1/vts/functional/VtsHalGraphicsMapperV2_1TargetTest.cpp
@@ -0,0 +1,247 @@
+/*
+ * Copyright (C) 2016 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 "VtsHalGraphicsMapperV2_1TargetTest"
+
+#include <VtsHalHidlTargetTestBase.h>
+#include <android-base/logging.h>
+#include <android/hardware/graphics/mapper/2.1/IMapper.h>
+#include <sync/sync.h>
+#include "VtsHalGraphicsMapperTestUtils.h"
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V2_1 {
+namespace tests {
+namespace {
+
+using android::hardware::graphics::mapper::V2_0::Error;
+
+using android::hardware::graphics::common::V1_0::BufferUsage;
+using android::hardware::graphics::common::V1_0::PixelFormat;
+
+class Gralloc : public V2_0::tests::Gralloc {
+   public:
+    Gralloc() : V2_0::tests::Gralloc() {
+        if (::testing::Test::HasFatalFailure()) {
+            return;
+        }
+
+        init();
+    }
+
+    sp<IMapper> getMapper() const { return mMapper; }
+
+    bool validateBufferSize(const native_handle_t* bufferHandle,
+                            const IMapper::BufferDescriptorInfo& descriptorInfo, uint32_t stride) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+        Error error = mMapper->validateBufferSize(buffer, descriptorInfo, stride);
+        return error == Error::NONE;
+    }
+
+    void getTransportSize(const native_handle_t* bufferHandle, uint32_t* numFds,
+                          uint32_t* numInts) {
+        auto buffer = const_cast<native_handle_t*>(bufferHandle);
+
+        *numFds = 0;
+        *numInts = 0;
+        mMapper->getTransportSize(buffer, [&](const auto& tmpError, const auto& tmpNumFds,
+                                              const auto& tmpNumInts) {
+            ASSERT_EQ(Error::NONE, tmpError) << "failed to get transport size";
+            ASSERT_GE(bufferHandle->numFds, int(tmpNumFds)) << "invalid numFds " << tmpNumFds;
+            ASSERT_GE(bufferHandle->numInts, int(tmpNumInts)) << "invalid numInts " << tmpNumInts;
+
+            *numFds = tmpNumFds;
+            *numInts = tmpNumInts;
+        });
+    }
+
+   private:
+    void init() {
+        mMapper = IMapper::castFrom(V2_0::tests::Gralloc::getMapper());
+        ASSERT_NE(nullptr, mMapper.get()) << "failed to find IMapper 2.1";
+    }
+
+    sp<IMapper> mMapper;
+};
+
+class GraphicsMapperHidlTest : public ::testing::VtsHalHidlTargetTestBase {
+   protected:
+    void SetUp() override {
+        ASSERT_NO_FATAL_FAILURE(mGralloc = std::make_unique<Gralloc>());
+
+        mDummyDescriptorInfo.width = 64;
+        mDummyDescriptorInfo.height = 64;
+        mDummyDescriptorInfo.layerCount = 1;
+        mDummyDescriptorInfo.format = PixelFormat::RGBA_8888;
+        mDummyDescriptorInfo.usage =
+            static_cast<uint64_t>(BufferUsage::CPU_WRITE_OFTEN | BufferUsage::CPU_READ_OFTEN);
+    }
+
+    void TearDown() override {}
+
+    std::unique_ptr<Gralloc> mGralloc;
+    IMapper::BufferDescriptorInfo mDummyDescriptorInfo{};
+};
+
+/**
+ * Test that IMapper::validateBufferSize works.
+ */
+TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBasic) {
+    const native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true, &stride));
+
+    ASSERT_TRUE(mGralloc->validateBufferSize(bufferHandle, mDummyDescriptorInfo, stride));
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
+}
+
+/**
+ * Test IMapper::validateBufferSize with invalid buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBadBuffer) {
+    native_handle_t* invalidHandle = nullptr;
+    Error ret = mGralloc->getMapper()->validateBufferSize(invalidHandle, mDummyDescriptorInfo,
+                                                          mDummyDescriptorInfo.width);
+    ASSERT_EQ(Error::BAD_BUFFER, ret)
+        << "validateBufferSize with nullptr did not fail with BAD_BUFFER";
+
+    invalidHandle = native_handle_create(0, 0);
+    ret = mGralloc->getMapper()->validateBufferSize(invalidHandle, mDummyDescriptorInfo,
+                                                    mDummyDescriptorInfo.width);
+    ASSERT_EQ(Error::BAD_BUFFER, ret)
+        << "validateBufferSize with invalid handle did not fail with BAD_BUFFER";
+    native_handle_delete(invalidHandle);
+
+    native_handle_t* rawBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(rawBufferHandle = const_cast<native_handle_t*>(
+                                mGralloc->allocate(mDummyDescriptorInfo, false)));
+    ret = mGralloc->getMapper()->validateBufferSize(rawBufferHandle, mDummyDescriptorInfo,
+                                                    mDummyDescriptorInfo.width);
+    ASSERT_EQ(Error::BAD_BUFFER, ret)
+        << "validateBufferSize with raw buffer handle did not fail with BAD_BUFFER";
+    native_handle_delete(rawBufferHandle);
+}
+
+/**
+ * Test IMapper::validateBufferSize with invalid descriptor and/or stride.
+ */
+TEST_F(GraphicsMapperHidlTest, ValidateBufferSizeBadValue) {
+    auto info = mDummyDescriptorInfo;
+    info.width = 1024;
+    info.height = 1024;
+    info.layerCount = 1;
+    info.format = PixelFormat::RGBA_8888;
+
+    native_handle_t* bufferHandle;
+    uint32_t stride;
+    ASSERT_NO_FATAL_FAILURE(
+        bufferHandle = const_cast<native_handle_t*>(mGralloc->allocate(info, true, &stride)));
+
+    // All checks below test if a 8MB buffer can fit in a 4MB buffer.
+    info.width *= 2;
+    Error ret = mGralloc->getMapper()->validateBufferSize(bufferHandle, info, stride);
+    ASSERT_EQ(Error::BAD_VALUE, ret)
+        << "validateBufferSize with bad width did not fail with BAD_VALUE";
+    info.width /= 2;
+
+    info.height *= 2;
+    ret = mGralloc->getMapper()->validateBufferSize(bufferHandle, info, stride);
+    ASSERT_EQ(Error::BAD_VALUE, ret)
+        << "validateBufferSize with bad height did not fail with BAD_VALUE";
+    info.height /= 2;
+
+    info.layerCount *= 2;
+    ret = mGralloc->getMapper()->validateBufferSize(bufferHandle, info, stride);
+    ASSERT_EQ(Error::BAD_VALUE, ret)
+        << "validateBufferSize with bad layer count did not fail with BAD_VALUE";
+    info.layerCount /= 2;
+
+    info.format = PixelFormat::RGBA_FP16;
+    ret = mGralloc->getMapper()->validateBufferSize(bufferHandle, info, stride);
+    ASSERT_EQ(Error::BAD_VALUE, ret)
+        << "validateBufferSize with bad format did not fail with BAD_VALUE";
+    info.format = PixelFormat::RGBA_8888;
+
+    ret = mGralloc->getMapper()->validateBufferSize(bufferHandle, mDummyDescriptorInfo, stride * 2);
+    ASSERT_EQ(Error::BAD_VALUE, ret)
+        << "validateBufferSize with bad stride did not fail with BAD_VALUE";
+
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
+}
+
+/**
+ * Test IMapper::getTransportSize.
+ */
+TEST_F(GraphicsMapperHidlTest, GetTransportSizeBasic) {
+    const native_handle_t* bufferHandle;
+    uint32_t numFds;
+    uint32_t numInts;
+    ASSERT_NO_FATAL_FAILURE(bufferHandle = mGralloc->allocate(mDummyDescriptorInfo, true));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->getTransportSize(bufferHandle, &numFds, &numInts));
+    ASSERT_NO_FATAL_FAILURE(mGralloc->freeBuffer(bufferHandle));
+}
+
+/**
+ * Test IMapper::getTransportSize with invalid buffers.
+ */
+TEST_F(GraphicsMapperHidlTest, GetTransportSizeBadBuffer) {
+    native_handle_t* invalidHandle = nullptr;
+    mGralloc->getMapper()->getTransportSize(
+        invalidHandle, [&](const auto& tmpError, const auto&, const auto&) {
+            ASSERT_EQ(Error::BAD_BUFFER, tmpError)
+                << "getTransportSize with nullptr did not fail with BAD_BUFFER";
+        });
+
+    invalidHandle = native_handle_create(0, 0);
+    mGralloc->getMapper()->getTransportSize(
+        invalidHandle, [&](const auto& tmpError, const auto&, const auto&) {
+            ASSERT_EQ(Error::BAD_BUFFER, tmpError)
+                << "getTransportSize with invalid handle did not fail with BAD_BUFFER";
+        });
+    native_handle_delete(invalidHandle);
+
+    native_handle_t* rawBufferHandle;
+    ASSERT_NO_FATAL_FAILURE(rawBufferHandle = const_cast<native_handle_t*>(
+                                mGralloc->allocate(mDummyDescriptorInfo, false)));
+    mGralloc->getMapper()->getTransportSize(
+        invalidHandle, [&](const auto& tmpError, const auto&, const auto&) {
+            ASSERT_EQ(Error::BAD_BUFFER, tmpError)
+                << "getTransportSize with raw buffer handle did not fail with BAD_BUFFER";
+        });
+    native_handle_delete(rawBufferHandle);
+}
+
+}  // namespace
+}  // namespace tests
+}  // namespace V2_1
+}  // namespace mapper
+}  // namespace graphics
+}  // namespace hardware
+}  // namespace android
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+
+    int status = RUN_ALL_TESTS();
+    LOG(INFO) << "Test result = " << status;
+
+    return status;
+}