diff --git a/audio/7.1/Android.bp b/audio/7.1/Android.bp
index 52980e2..cede72a 100644
--- a/audio/7.1/Android.bp
+++ b/audio/7.1/Android.bp
@@ -17,7 +17,6 @@
         "IDevice.hal",
         "IDevicesFactory.hal",
         "IPrimaryDevice.hal",
-        "IStreamIn.hal",
         "IStreamOut.hal",
         "IStreamOutLatencyModeCallback.hal",
     ],
diff --git a/audio/7.1/IDevice.hal b/audio/7.1/IDevice.hal
index e0b1e92..c158e7e 100644
--- a/audio/7.1/IDevice.hal
+++ b/audio/7.1/IDevice.hal
@@ -20,7 +20,6 @@
 import @7.0::AudioInOutFlag;
 import @7.0::IDevice;
 import @7.0::Result;
-import IStreamIn;
 import IStreamOut;
 
 interface IDevice extends @7.0::IDevice {
@@ -56,37 +55,6 @@
                     AudioConfig suggestedConfig);
 
     /**
-     * This method creates and opens the audio hardware input stream.
-     * If the stream can not be opened with the proposed audio config,
-     * HAL must provide suggested values for the audio config.
-     *
-     * Note: INVALID_ARGUMENTS is returned both in the case when the
-     * HAL can not use the provided config and in the case when
-     * the value of any argument is invalid. In the latter case the
-     * HAL must provide a default initialized suggested config.
-     *
-     * @param ioHandle handle assigned by AudioFlinger.
-     * @param device device type and (if needed) address.
-     * @param config stream configuration.
-     * @param flags additional flags.
-     * @param sinkMetadata Description of the audio that is suggested by the client.
-     *                     May be used by implementations to configure processing effects.
-     * @return retval operation completion status.
-     * @return inStream in case of success, created input stream.
-     * @return suggestedConfig in the case of rejection of the proposed config,
-     *                         a config suggested by the HAL.
-     */
-    openInputStream_7_1(
-            AudioIoHandle ioHandle,
-            DeviceAddress device,
-            AudioConfig config,
-            vec<AudioInOutFlag> flags,
-            SinkMetadata sinkMetadata) generates (
-                    Result retval,
-                    IStreamIn inStream,
-                    AudioConfig suggestedConfig);
-
-    /**
      * Notifies the device module about the connection state of an input/output
      * device attached to it. The devicePort identifies the device and may also
      * provide extra information such as raw audio descriptors.
diff --git a/audio/7.1/IStreamIn.hal b/audio/7.1/IStreamIn.hal
deleted file mode 100644
index abebe6a..0000000
--- a/audio/7.1/IStreamIn.hal
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * 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.
- */
-
-package android.hardware.audio@7.1;
-
-import @7.0::IStreamIn;
-
-interface IStreamIn extends @7.0::IStreamIn {
-};
diff --git a/audio/core/all-versions/default/Device.cpp b/audio/core/all-versions/default/Device.cpp
index ca8c03d..b954fcd 100644
--- a/audio/core/all-versions/default/Device.cpp
+++ b/audio/core/all-versions/default/Device.cpp
@@ -348,16 +348,6 @@
     _hidl_cb(result, streamOut, suggestedConfig);
     return Void();
 }
-
-Return<void> Device::openInputStream_7_1(int32_t ioHandle, const DeviceAddress& device,
-                                         const AudioConfig& config, const AudioInputFlags& flags,
-                                         const SinkMetadata& sinkMetadata,
-                                         openInputStream_7_1_cb _hidl_cb) {
-    auto [result, streamIn, suggestedConfig] =
-            openInputStreamImpl(ioHandle, device, config, flags, sinkMetadata);
-    _hidl_cb(result, streamIn, suggestedConfig);
-    return Void();
-}
 #endif  // V7.1
 
 Return<bool> Device::supportsAudioPatches() {
diff --git a/audio/core/all-versions/default/include/core/default/Device.h b/audio/core/all-versions/default/include/core/default/Device.h
index 8cde3e0..0696f97 100644
--- a/audio/core/all-versions/default/include/core/default/Device.h
+++ b/audio/core/all-versions/default/include/core/default/Device.h
@@ -123,10 +123,6 @@
                                       const AudioConfig& config, const AudioOutputFlags& flags,
                                       const SourceMetadata& sourceMetadata,
                                       openOutputStream_7_1_cb _hidl_cb) override;
-    Return<void> openInputStream_7_1(int32_t ioHandle, const DeviceAddress& device,
-                                     const AudioConfig& config, const AudioInputFlags& flags,
-                                     const SinkMetadata& sinkMetadata,
-                                     openInputStream_7_1_cb _hidl_cb) override;
 #endif
 
     Return<bool> supportsAudioPatches() override;
diff --git a/audio/core/all-versions/default/include/core/default/StreamIn.h b/audio/core/all-versions/default/include/core/default/StreamIn.h
index a6346e5..4627eec 100644
--- a/audio/core/all-versions/default/include/core/default/StreamIn.h
+++ b/audio/core/all-versions/default/include/core/default/StreamIn.h
@@ -17,7 +17,9 @@
 #ifndef ANDROID_HARDWARE_AUDIO_STREAMIN_H
 #define ANDROID_HARDWARE_AUDIO_STREAMIN_H
 
-#include PATH(android/hardware/audio/FILE_VERSION/IStreamIn.h)
+// clang-format off
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/IStreamIn.h)
+// clang-format on
 
 #include "Device.h"
 #include "Stream.h"
diff --git a/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalUtils.h b/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalUtils.h
index a567cf9..83ca9eb 100644
--- a/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalUtils.h
+++ b/audio/core/all-versions/vts/functional/4.0/AudioPrimaryHidlHalUtils.h
@@ -15,9 +15,9 @@
  */
 
 // clang-format off
-#include PATH(android/hardware/audio/FILE_VERSION/IStreamIn.h)
-#include PATH(android/hardware/audio/FILE_VERSION/IStreamOut.h)
+#include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/IStreamIn.h)
 #include PATH(android/hardware/audio/CORE_TYPES_FILE_VERSION/types.h)
+#include PATH(android/hardware/audio/FILE_VERSION/IStreamOut.h)
 #include PATH(android/hardware/audio/common/COMMON_TYPES_FILE_VERSION/types.h)
 // clang-format on
 #include <hidl/HidlSupport.h>
diff --git a/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h b/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
index 404532a..fa3ee7f 100644
--- a/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
+++ b/audio/core/all-versions/vts/functional/AudioPrimaryHidlHalTest.h
@@ -91,8 +91,9 @@
 using namespace ::android::hardware::audio::common::COMMON_TYPES_CPP_VERSION;
 using namespace ::android::hardware::audio::common::test::utility;
 using namespace ::android::hardware::audio::CPP_VERSION;
-using ReadParameters = ::android::hardware::audio::CPP_VERSION::IStreamIn::ReadParameters;
-using ReadStatus = ::android::hardware::audio::CPP_VERSION::IStreamIn::ReadStatus;
+using ReadParameters =
+        ::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStreamIn::ReadParameters;
+using ReadStatus = ::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStreamIn::ReadStatus;
 using WriteCommand = ::android::hardware::audio::CPP_VERSION::IStreamOut::WriteCommand;
 using WriteStatus = ::android::hardware::audio::CPP_VERSION::IStreamOut::WriteStatus;
 #if MAJOR_VERSION >= 7
@@ -1089,7 +1090,7 @@
 
 class StreamReader : public StreamWorker<StreamReader> {
   public:
-    using IStreamIn = ::android::hardware::audio::CPP_VERSION::IStreamIn;
+    using IStreamIn = ::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStreamIn;
 
     StreamReader(IStreamIn* stream, size_t bufferSize)
         : mStream(stream), mBufferSize(bufferSize), mData(mBufferSize) {}
@@ -1204,7 +1205,8 @@
     EventFlag* mEfGroup = nullptr;
 };
 
-class InputStreamTest : public OpenStreamTest<::android::hardware::audio::CPP_VERSION::IStreamIn> {
+class InputStreamTest
+    : public OpenStreamTest<::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStreamIn> {
     void SetUp() override {
         ASSERT_NO_FATAL_FAILURE(OpenStreamTest::SetUp());  // setup base
 #if MAJOR_VERSION <= 6
@@ -1226,13 +1228,8 @@
         auto flags = getInputFlags();
         testOpen(
                 [&](AudioIoHandle handle, AudioConfig config, auto cb) {
-#if MAJOR_VERSION < 7 || (MAJOR_VERSION == 7 && MINOR_VERSION == 0)
                     return getDevice()->openInputStream(handle, address, config, flags,
                                                         initMetadata, cb);
-#elif MAJOR_VERSION == 7 && MINOR_VERSION == 1
-                    return getDevice()->openInputStream_7_1(handle, address, config, flags,
-                                                            initMetadata, cb);
-#endif
                 },
                 config);
     }
@@ -1605,8 +1602,9 @@
                             "InputStream::setGain");
 }
 
-static void testPrepareForReading(::android::hardware::audio::CPP_VERSION::IStreamIn* stream,
-                                  uint32_t frameSize, uint32_t framesCount) {
+static void testPrepareForReading(
+        ::android::hardware::audio::CORE_TYPES_CPP_VERSION::IStreamIn* stream, uint32_t frameSize,
+        uint32_t framesCount) {
     Result res;
     // Ignore output parameters as the call should fail
     ASSERT_OK(stream->prepareForReading(frameSize, framesCount,