diff --git a/soundtrigger/2.1/default/Android.bp b/soundtrigger/2.1/default/Android.bp
new file mode 100644
index 0000000..a246680
--- /dev/null
+++ b/soundtrigger/2.1/default/Android.bp
@@ -0,0 +1,57 @@
+//
+// 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.
+
+package {
+    // See: http://go/android-license-faq
+    default_applicable_licenses: [
+        "hardware_interfaces_license",
+    ],
+}
+
+soong_config_module_type_import {
+    from: "hardware/interfaces/soundtrigger/2.0/default/Android.bp",
+    module_types: ["soundtrigger_cc_library_shared"],
+}
+
+soundtrigger_cc_library_shared {
+    name: "android.hardware.soundtrigger@2.1-impl",
+    vendor: true,
+    relative_install_path: "hw",
+    srcs: ["SoundTriggerHw.cpp"],
+
+    cflags: [
+        "-Wall",
+        "-Werror",
+    ],
+
+    shared_libs: [
+        "libhardware",
+        "libhidlbase",
+        "libhidlmemory",
+        "liblog",
+        "libutils",
+        "android.hardware.soundtrigger@2.1",
+        "android.hardware.soundtrigger@2.0",
+        "android.hardware.soundtrigger@2.0-core",
+        "android.hidl.allocator@1.0",
+        "android.hidl.memory@1.0",
+    ],
+    compile_multilib: "32",
+    soong_config_variables: {
+        audioserver_multilib: {
+            compile_multilib: "%s",
+        },
+    },
+}
diff --git a/soundtrigger/2.1/default/Android.mk b/soundtrigger/2.1/default/Android.mk
deleted file mode 100644
index 602f5a7..0000000
--- a/soundtrigger/2.1/default/Android.mk
+++ /dev/null
@@ -1,51 +0,0 @@
-#
-# 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.
-
-
-LOCAL_PATH := $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := android.hardware.soundtrigger@2.1-impl
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_NOTICE_FILE := $(LOCAL_PATH)/../../../NOTICE
-LOCAL_VENDOR_MODULE := true
-LOCAL_MODULE_RELATIVE_PATH := hw
-LOCAL_SRC_FILES := \
-    SoundTriggerHw.cpp
-
-LOCAL_CFLAGS := -Wall -Werror
-
-LOCAL_SHARED_LIBRARIES := \
-        libhardware \
-        libhidlbase \
-        libhidlmemory \
-        liblog \
-        libutils \
-        android.hardware.soundtrigger@2.1 \
-        android.hardware.soundtrigger@2.0 \
-        android.hardware.soundtrigger@2.0-core \
-        android.hidl.allocator@1.0 \
-        android.hidl.memory@1.0
-
-LOCAL_C_INCLUDE_DIRS := $(LOCAL_PATH)
-
-ifeq ($(strip $(AUDIOSERVER_MULTILIB)),)
-LOCAL_MULTILIB := 32
-else
-LOCAL_MULTILIB := $(AUDIOSERVER_MULTILIB)
-endif
-
-include $(BUILD_SHARED_LIBRARY)