diff --git a/contexthub/common/default/1.X/utils/IContextHubCallbackWrapper.h b/contexthub/common/default/1.X/utils/IContextHubCallbackWrapper.h
index d8cc37b..d9459b7 100644
--- a/contexthub/common/default/1.X/utils/IContextHubCallbackWrapper.h
+++ b/contexthub/common/default/1.X/utils/IContextHubCallbackWrapper.h
@@ -64,6 +64,11 @@
     virtual Return<void> handleAppAbort(uint64_t appId, uint32_t abortCode) = 0;
 
     virtual Return<void> handleAppsInfo(hidl_vec<V1_2::HubAppInfo> appInfo) = 0;
+
+    virtual Return<bool> linkToDeath(const sp<hidl_death_recipient>& recipient,
+                                     uint64_t cookie) = 0;
+
+    virtual Return<bool> unlinkToDeath(const sp<hidl_death_recipient>& recipient) = 0;
 };
 
 template <typename T>
@@ -92,6 +97,14 @@
         return mCallback->handleAppsInfo(convertToOldAppInfo(appInfo));
     }
 
+    Return<bool> linkToDeath(const sp<hidl_death_recipient>& recipient, uint64_t cookie) override {
+        return mCallback->linkToDeath(recipient, cookie);
+    }
+
+    Return<bool> unlinkToDeath(const sp<hidl_death_recipient>& recipient) override {
+        return mCallback->unlinkToDeath(recipient);
+    }
+
   protected:
     sp<T> mCallback;
 };
diff --git a/drm/1.4/types.hal b/drm/1.4/types.hal
index 706c3aa..09531a4 100644
--- a/drm/1.4/types.hal
+++ b/drm/1.4/types.hal
@@ -37,15 +37,100 @@
 };
 
 enum Status : @1.2::Status {
-
+    /**
+     * queueSecureInput buffer called with 0 subsamples.
+     */
+    CANNOT_DECRYPT_ZERO_SUBSAMPLES,
+    /**
+     * An error happened within the crypto library used by the drm plugin.
+     */
+    CRYPTO_LIBRARY_ERROR,
     /**
      * Non-specific error reported by the device OEM subsystem.
      */
     GENERAL_OEM_ERROR,
-
     /**
      * Unexpected internal failure in the drm/crypto plugin.
      */
     GENERAL_PLUGIN_ERROR,
-
+    /**
+     * The init data parameter passed to getKeyRequest is empty or invalid.
+     */
+    INIT_DATA_INVALID,
+    /**
+     * Either the key was not loaded from the license before attempting the
+     * operation, or the key ID parameter provided by the app is incorrect.
+     */
+    KEY_NOT_LOADED,
+    /**
+     * The license response was empty, fields are missing or otherwise unable
+     * to be parsed.
+     */
+    LICENSE_PARSE_ERROR,
+    /**
+     * The operation (e.g. to renew or persist a license) is prohibited by the
+     * license policy.
+     */
+    LICENSE_POLICY_ERROR,
+    /**
+     * Failed to generate a release request because a field in the stored
+     * license is empty or malformed.
+     */
+    LICENSE_RELEASE_ERROR,
+    /**
+     * The license server detected an error in the license request.
+     */
+    LICENSE_REQUEST_REJECTED,
+    /**
+     * Failed to restore an offline license because a field is empty or
+     * malformed.
+     */
+    LICENSE_RESTORE_ERROR,
+    /**
+     * License is in an invalid state for the attempted operation.
+     */
+    LICENSE_STATE_ERROR,
+    /**
+     * Certificate is malformed or is of the wrong type.
+     */
+    MALFORMED_CERTIFICATE,
+    /**
+     * Failure in the media framework.
+     */
+    MEDIA_FRAMEWORK_ERROR,
+    /**
+     * Certificate has not been set.
+     */
+    MISSING_CERTIFICATE,
+    /**
+     * There was an error loading the provisioned certificate.
+     */
+    PROVISIONING_CERTIFICATE_ERROR,
+    /**
+     * Required steps where not performed before provisioning was attempted.
+     */
+    PROVISIONING_CONFIGURATION_ERROR,
+    /**
+     * The provisioning response was empty, fields are missing or otherwise
+     * unable to be parsed.
+     */
+    PROVISIONING_PARSE_ERROR,
+    /**
+     * Provisioning failed in a way that is likely to succeed on a subsequent
+     * attempt.
+     */
+    RETRYABLE_PROVISIONING_ERROR,
+    /**
+     * Failed to generate a secure stop request because a field in the stored
+     * license is empty or malformed.
+     */
+    SECURE_STOP_RELEASE_ERROR,
+    /**
+     * The plugin was unable to read data from the filesystem.
+     */
+    STORAGE_READ_FAILURE,
+    /**
+     * The plugin was unable to write data to the filesystem.
+     */
+    STORAGE_WRITE_FAILURE,
 };
diff --git a/drm/1.4/vts/OWNERS b/drm/1.4/vts/OWNERS
new file mode 100644
index 0000000..3a0672e
--- /dev/null
+++ b/drm/1.4/vts/OWNERS
@@ -0,0 +1,9 @@
+conglin@google.com
+edwinwong@google.com
+fredgc@google.com
+jtinker@google.com
+juce@google.com
+kylealexander@google.com
+rfrias@google.com
+robertshih@google.com
+sigquit@google.com
diff --git a/drm/1.4/vts/functional/Android.bp b/drm/1.4/vts/functional/Android.bp
new file mode 100644
index 0000000..80b1dd1
--- /dev/null
+++ b/drm/1.4/vts/functional/Android.bp
@@ -0,0 +1,95 @@
+//
+// Copyright (C) 2021 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_library_static {
+    name: "android.hardware.drm@1.4-vts",
+    defaults: ["VtsHalTargetTestDefaults"],
+    local_include_dirs: [
+        "include",
+    ],
+    srcs: [
+        "drm_hal_test.cpp",
+    ],
+    shared_libs: [
+        "android.hardware.drm@1.0",
+        "android.hardware.drm@1.1",
+        "android.hardware.drm@1.2",
+        "android.hardware.drm@1.3",
+        "android.hardware.drm@1.4",
+        "android.hidl.allocator@1.0",
+        "android.hidl.memory@1.0",
+        "libhidlmemory",
+        "libnativehelper",
+    ],
+    static_libs: [
+        "android.hardware.drm@1.0-helper",
+        "android.hardware.drm@1.2-vts",
+        "libdrmvtshelper",
+    ],
+    export_static_lib_headers: [
+        "android.hardware.drm@1.2-vts",
+    ],
+    export_include_dirs: [
+        "include",
+    ],
+}
+
+cc_test {
+    name: "VtsHalDrmV1_4TargetTest",
+    defaults: ["VtsHalTargetTestDefaults"],
+    include_dirs: ["hardware/interfaces/drm/1.0/vts/functional"],
+    srcs: [
+        "drm_hal_test_main.cpp",
+    ],
+    whole_static_libs: [
+        "android.hardware.drm@1.4-vts",
+    ],
+    shared_libs: [
+        "android.hardware.drm@1.0",
+        "android.hardware.drm@1.1",
+        "android.hardware.drm@1.2",
+        "android.hardware.drm@1.3",
+        "android.hardware.drm@1.4",
+        "android.hidl.allocator@1.0",
+        "android.hidl.memory@1.0",
+        "libcrypto",
+        "libhidlmemory",
+        "libnativehelper",
+    ],
+    static_libs: [
+        "android.hardware.drm@1.0-helper",
+        "android.hardware.drm@1.2-vts",
+        "libdrmvtshelper",
+    ],
+    arch: {
+        arm: {
+            data: [":libvtswidevine-arm-prebuilts"],
+        },
+        arm64: {
+            data: [":libvtswidevine-arm64-prebuilts"],
+        },
+        x86: {
+            data: [":libvtswidevine-x86-prebuilts"],
+        },
+        x86_64: {
+            data: [":libvtswidevine-x86_64-prebuilts"],
+        },
+    },
+    test_suites: [
+        "general-tests",
+        "vts",
+    ],
+}
diff --git a/drm/1.4/vts/functional/AndroidTest.xml b/drm/1.4/vts/functional/AndroidTest.xml
new file mode 100644
index 0000000..b18da49
--- /dev/null
+++ b/drm/1.4/vts/functional/AndroidTest.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2021 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.
+-->
+<configuration description="Runs VtsHalDrmV1_4TargetTest.">
+    <option name="test-suite-tag" value="apct" />
+    <option name="test-suite-tag" value="apct-native" />
+    <option name="not-shardable" value="true" />
+
+    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
+
+    <target_preparer class="com.android.tradefed.targetprep.WifiPreparer" >
+        <option name="verify-only" value="true" />
+    </target_preparer>
+
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="push-file" key="VtsHalDrmV1_4TargetTest" value="/data/local/tmp/VtsHalDrmV1_4TargetTest" />
+        <option name="push-file" key="libvtswidevine64.so" value="/data/local/tmp/64/lib/libvtswidevine.so" />
+        <option name="push-file" key="libvtswidevine32.so" value="/data/local/tmp/32/lib/libvtswidevine.so" />
+    </target_preparer>
+
+    <test class="com.android.tradefed.testtype.GTest" >
+        <option name="native-test-device-path" value="/data/local/tmp" />
+        <option name="module-name" value="VtsHalDrmV1_4TargetTest" />
+    </test>
+</configuration>
diff --git a/drm/1.4/vts/functional/drm_hal_test.cpp b/drm/1.4/vts/functional/drm_hal_test.cpp
new file mode 100644
index 0000000..ee6635b
--- /dev/null
+++ b/drm/1.4/vts/functional/drm_hal_test.cpp
@@ -0,0 +1,161 @@
+/*
+ * Copyright (C) 2021 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 "drm_hal_test@1.4"
+
+#include "android/hardware/drm/1.4/vts/drm_hal_test.h"
+
+namespace android {
+namespace hardware {
+namespace drm {
+namespace V1_4 {
+namespace vts {
+
+const char* const DrmHalTest::kVideoMp4 = "video/mp4";
+const char* const DrmHalTest::kAudioMp4 = "audio/mp4";
+const uint32_t DrmHalTest::kSecLevelDefault = DrmHalTest::kSecLevelMax + 1;
+
+sp<drm::V1_4::IDrmPlugin> DrmHalTest::DrmPluginV1_4() const {
+    sp<drm::V1_4::IDrmPlugin> plugin(drm::V1_4::IDrmPlugin::castFrom(drmPlugin));
+    EXPECT_NE(nullptr, plugin.get());
+    return plugin;
+}
+
+sp<V1_0::ICryptoPlugin> DrmHalTest::CryptoPlugin(const SessionId& sid) {
+    sp<V1_0::ICryptoPlugin> crypto;
+    auto res = cryptoFactory->createPlugin(
+        getUUID(), sid,
+        [&](V1_0::Status status, const sp<V1_0::ICryptoPlugin>& plugin) {
+            EXPECT_EQ(V1_0::Status::OK, status);
+            EXPECT_NE(nullptr, plugin.get());
+            crypto = plugin;
+        });
+    EXPECT_OK(res);
+    return crypto;
+}
+
+SessionId DrmHalTest::OpenSession(uint32_t level = kSecLevelDefault) {
+    V1_0::Status err;
+    SessionId sessionId;
+    bool attemptedProvision = false;
+
+    V1_0::IDrmPlugin::openSession_cb cb = [&](
+            V1_0::Status status,
+            const hidl_vec<unsigned char> &id) {
+        err = status;
+        sessionId = id;
+    };
+
+    while (true) {
+        Return<void> res;
+        if (level > kSecLevelMax) {
+            res = drmPlugin->openSession(cb);
+        } else if (level >= kSecLevelMin) {
+            auto securityLevel = static_cast<SecurityLevel>(level);
+            res = drmPlugin->openSession_1_1(securityLevel, cb);
+        }
+        EXPECT_OK(res);
+        if (V1_0::Status::ERROR_DRM_NOT_PROVISIONED == err
+                && !attemptedProvision) {
+            // provision once if necessary
+            provision();
+            attemptedProvision = true;
+            continue;
+        } else if (V1_0::Status::ERROR_DRM_CANNOT_HANDLE == err) {
+            // must be able to handle default level
+            EXPECT_NE(kSecLevelDefault, level);
+            sessionId = {};
+        } else {
+            EXPECT_EQ(V1_0::Status::OK, err);
+            EXPECT_NE(sessionId.size(), 0u);
+        }
+        break;
+    }
+
+    return sessionId;
+}
+
+TEST_P(DrmHalTest, RequiresSecureDecoder) {
+    for (uint32_t level : {kSecLevelMin, kSecLevelMax, kSecLevelDefault}) {
+        for (auto mime : {kVideoMp4, kAudioMp4}) {
+            auto sid = OpenSession(level);
+            if (sid.size() == 0u) {
+                continue;
+            }
+            auto drm = DrmPluginV1_4();
+            sp<V1_0::ICryptoPlugin> crypto(CryptoPlugin(sid));
+            if (drm == nullptr || crypto == nullptr) {
+                continue;
+            }
+            bool r1 = crypto->requiresSecureDecoderComponent(mime);
+            bool r2;
+            if (level == kSecLevelDefault) {
+                r2 = drm->requiresSecureDecoderDefault(mime);
+            } else {
+                auto sL = static_cast<SecurityLevel>(level);
+                r2 = drm->requiresSecureDecoder(mime, sL);
+            }
+            EXPECT_EQ(r1, r2);
+            closeSession(sid);
+        }
+    }
+}
+
+TEST_P(DrmHalTest, SetPlaybackId) {
+    auto testInfo = ::testing::UnitTest::GetInstance()->current_test_info();
+    auto testName = testInfo->name();
+    const hidl_string& pbId{testName};
+    auto sid = OpenSession();
+    auto drm = DrmPluginV1_4();
+    if (drm == nullptr) {
+        return;
+    }
+    V1_0::Status err = drm->setPlaybackId(sid, pbId);
+    EXPECT_EQ(V1_0::Status::OK, err);
+    closeSession(sid);
+
+    // search for playback id among metric attributes/values
+    bool foundPbId = false;
+    auto res = drmPlugin->getMetrics([&](
+            V1_0::Status status,
+            hidl_vec<V1_1::DrmMetricGroup> metricGroups) {
+        EXPECT_EQ(V1_0::Status::OK, status);
+        for (const auto& group : metricGroups) {
+            for (const auto& metric : group.metrics) {
+                for (const auto& value : metric.values) {
+                    if (value.stringValue == pbId) {
+                        foundPbId = true;
+                        break;
+                    }
+                }
+                for (const auto& attr : metric.attributes) {
+                    if (attr.stringValue == pbId) {
+                        foundPbId = true;
+                        break;
+                    }
+                }
+            }
+        }
+    });
+    EXPECT_OK(res);
+    EXPECT_TRUE(foundPbId);
+}
+
+}  // namespace vts
+}  // namespace V1_4
+}  // namespace drm
+}  // namespace hardware
+}  // namespace android
diff --git a/drm/1.4/vts/functional/drm_hal_test_main.cpp b/drm/1.4/vts/functional/drm_hal_test_main.cpp
new file mode 100644
index 0000000..65d1b76
--- /dev/null
+++ b/drm/1.4/vts/functional/drm_hal_test_main.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+/**
+ * Instantiate the set of test cases for each vendor module
+ */
+
+#define LOG_TAG "drm_hal_test@1.4"
+
+#include <android/hardware/drm/1.4/ICryptoFactory.h>
+#include <android/hardware/drm/1.4/IDrmFactory.h>
+#include <gtest/gtest.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/ServiceManagement.h>
+#include <log/log.h>
+
+#include <algorithm>
+#include <iterator>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "android/hardware/drm/1.4/vts/drm_hal_test.h"
+
+using drm_vts::DrmHalTestParam;
+using drm_vts::PrintParamInstanceToString;
+
+using android::hardware::drm::V1_4::vts::DrmHalTest;
+
+static const std::vector<DrmHalTestParam> kAllInstances = [] {
+    using ::android::hardware::hidl_array;
+    using ::android::hardware::hidl_vec;
+    using ::android::hardware::drm::V1_4::ICryptoFactory;
+    using ::android::hardware::drm::V1_4::IDrmFactory;
+
+    std::vector<std::string> drmInstances =
+            android::hardware::getAllHalInstanceNames(IDrmFactory::descriptor);
+    std::vector<std::string> cryptoInstances =
+            android::hardware::getAllHalInstanceNames(ICryptoFactory::descriptor);
+    std::set<std::string> allInstances;
+    allInstances.insert(drmInstances.begin(), drmInstances.end());
+    allInstances.insert(cryptoInstances.begin(), cryptoInstances.end());
+
+    std::vector<DrmHalTestParam> firstInstanceUuidCombos;
+    for (const auto &instance : allInstances) {
+        auto drmFactory = IDrmFactory::getService(instance);
+        if (drmFactory == nullptr) {
+            continue;
+        }
+        drmFactory->getSupportedCryptoSchemes(
+            [&](const hidl_vec<hidl_array<uint8_t, 16>>& schemes) {
+                if (schemes.size() > 0) {
+                    firstInstanceUuidCombos.push_back(DrmHalTestParam(instance, schemes[0]));
+                }
+            });
+    }
+    return firstInstanceUuidCombos;
+}();
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(DrmHalTest);
+INSTANTIATE_TEST_SUITE_P(PerInstance, DrmHalTest,
+                         testing::ValuesIn(kAllInstances),
+                         PrintParamInstanceToString);
+
+int main(int argc, char** argv) {
+#if defined(__LP64__)
+    const char* kModulePath = "/data/local/tmp/64/lib";
+#else
+    const char* kModulePath = "/data/local/tmp/32/lib";
+#endif
+    DrmHalTest::gVendorModules
+            = new drm_vts::VendorModules(kModulePath);
+    if (DrmHalTest::gVendorModules->getPathList().size() == 0) {
+        std::cerr << "WARNING: No vendor modules found in " << kModulePath <<
+                ", all vendor tests will be skipped" << std::endl;
+    }
+    ::testing::InitGoogleTest(&argc, argv);
+    int status = RUN_ALL_TESTS();
+    ALOGI("Test result = %d", status);
+    return status;
+}
diff --git a/drm/1.4/vts/functional/include/android/hardware/drm/1.4/vts/drm_hal_test.h b/drm/1.4/vts/functional/include/android/hardware/drm/1.4/vts/drm_hal_test.h
new file mode 100644
index 0000000..ed49a61
--- /dev/null
+++ b/drm/1.4/vts/functional/include/android/hardware/drm/1.4/vts/drm_hal_test.h
@@ -0,0 +1,83 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#ifndef DRM_HAL_TEST_V1_4_H
+#define DRM_HAL_TEST_V1_4_H
+
+#include <android/hardware/drm/1.0/IDrmPlugin.h>
+#include <android/hardware/drm/1.3/IDrmFactory.h>
+#include <android/hardware/drm/1.4/ICryptoFactory.h>
+#include <android/hardware/drm/1.4/ICryptoPlugin.h>
+#include <android/hardware/drm/1.4/IDrmFactory.h>
+#include <android/hardware/drm/1.4/IDrmPlugin.h>
+#include <gtest/gtest.h>
+#include <hidl/HidlSupport.h>
+#include <hidl/ServiceManagement.h>
+#include <log/log.h>
+
+#include <algorithm>
+#include <cstdint>
+#include <iterator>
+#include <string>
+#include <utility>
+#include <vector>
+
+#include "drm_hal_vendor_module_api.h"
+#include "drm_vts_helper.h"
+#include "vendor_modules.h"
+#include "VtsHalHidlTargetCallbackBase.h"
+
+#include "android/hardware/drm/1.2/vts/drm_hal_common.h"
+
+namespace android {
+namespace hardware {
+namespace drm {
+namespace V1_4 {
+namespace vts {
+
+namespace drm = ::android::hardware::drm;
+using android::hardware::hidl_array;
+using android::hardware::hidl_string;
+using V1_0::SessionId;
+using V1_1::SecurityLevel;
+
+using drm_vts::DrmHalTestParam;
+
+class DrmHalTest : public drm::V1_2::vts::DrmHalTest {
+public:
+  using drm::V1_2::vts::DrmHalTest::DrmHalTest;
+  static const char* const kVideoMp4;
+  static const char* const kAudioMp4;
+  static const uint32_t kSecLevelMin = static_cast<uint32_t>(SecurityLevel::SW_SECURE_CRYPTO);
+  static const uint32_t kSecLevelMax = static_cast<uint32_t>(SecurityLevel::HW_SECURE_ALL);
+  static const uint32_t kSecLevelDefault;
+
+protected:
+  sp<V1_4::IDrmPlugin> DrmPluginV1_4() const;
+  sp<V1_0::ICryptoPlugin> CryptoPlugin(const SessionId& sid);
+  SessionId OpenSession(uint32_t level);
+
+private:
+  void DoProvisioning();
+};
+
+}  // namespace vts
+}  // namespace V1_4
+}  // namespace drm
+}  // namespace hardware
+}  // namespace android
+
+#endif  // DRM_HAL_TEST_V1_4_H