diff --git a/audio/core/2.0/default/Device.cpp b/audio/core/2.0/default/Device.cpp
index 221ea5c..b67203d 100644
--- a/audio/core/2.0/default/Device.cpp
+++ b/audio/core/2.0/default/Device.cpp
@@ -21,7 +21,7 @@
 #include "core/2.0/default/Conversions.h"
 #include "core/2.0/default/StreamIn.h"
 #include "core/2.0/default/StreamOut.h"
-#include "core/all-versions/default/Util.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/Device.impl.h>
diff --git a/audio/core/2.0/default/ParametersUtil.cpp b/audio/core/2.0/default/ParametersUtil.cpp
index 33a3ad9..963e291 100644
--- a/audio/core/2.0/default/ParametersUtil.cpp
+++ b/audio/core/2.0/default/ParametersUtil.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "core/2.0/default/ParametersUtil.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/ParametersUtil.impl.h>
diff --git a/audio/core/2.0/default/PrimaryDevice.cpp b/audio/core/2.0/default/PrimaryDevice.cpp
index ce57403..decaa14 100644
--- a/audio/core/2.0/default/PrimaryDevice.cpp
+++ b/audio/core/2.0/default/PrimaryDevice.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "PrimaryDeviceHAL"
 
 #include "core/2.0/default/PrimaryDevice.h"
-#include "core/all-versions/default/Util.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/PrimaryDevice.impl.h>
diff --git a/audio/core/2.0/default/Stream.cpp b/audio/core/2.0/default/Stream.cpp
index 69ee659..0863a7c 100644
--- a/audio/core/2.0/default/Stream.cpp
+++ b/audio/core/2.0/default/Stream.cpp
@@ -19,6 +19,7 @@
 #include "core/2.0/default/Stream.h"
 #include "common/all-versions/default/EffectMap.h"
 #include "core/2.0/default/Conversions.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/Stream.impl.h>
diff --git a/audio/core/2.0/default/StreamIn.cpp b/audio/core/2.0/default/StreamIn.cpp
index 6b8776e..2021df1 100644
--- a/audio/core/2.0/default/StreamIn.cpp
+++ b/audio/core/2.0/default/StreamIn.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "StreamInHAL"
 
 #include "core/2.0/default/StreamIn.h"
-#include "core/all-versions/default/Util.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/StreamIn.impl.h>
diff --git a/audio/core/2.0/default/StreamOut.cpp b/audio/core/2.0/default/StreamOut.cpp
index 7f1461a..940a251 100644
--- a/audio/core/2.0/default/StreamOut.cpp
+++ b/audio/core/2.0/default/StreamOut.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "StreamOutHAL"
 
 #include "core/2.0/default/StreamOut.h"
-#include "core/all-versions/default/Util.h"
+#include "core/2.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V2_0
 #include <core/all-versions/default/StreamOut.impl.h>
diff --git a/audio/core/2.0/default/include/core/2.0/default/Util.h b/audio/core/2.0/default/include/core/2.0/default/Util.h
new file mode 100644
index 0000000..858cd3b
--- /dev/null
+++ b/audio/core/2.0/default/include/core/2.0/default/Util.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
+#define ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
+
+#include <android/hardware/audio/2.0/types.h>
+
+#define AUDIO_HAL_VERSION V2_0
+#include <core/all-versions/default/Util.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V2_0_UTIL_H
diff --git a/audio/core/4.0/default/Device.cpp b/audio/core/4.0/default/Device.cpp
index 26f9ab4..b33434e 100644
--- a/audio/core/4.0/default/Device.cpp
+++ b/audio/core/4.0/default/Device.cpp
@@ -21,7 +21,7 @@
 #include "core/4.0/default/Conversions.h"
 #include "core/4.0/default/StreamIn.h"
 #include "core/4.0/default/StreamOut.h"
-#include "core/all-versions/default/Util.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/Device.impl.h>
diff --git a/audio/core/4.0/default/ParametersUtil.cpp b/audio/core/4.0/default/ParametersUtil.cpp
index 5c1b1c4..2cc9fb5 100644
--- a/audio/core/4.0/default/ParametersUtil.cpp
+++ b/audio/core/4.0/default/ParametersUtil.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "core/4.0/default/ParametersUtil.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/ParametersUtil.impl.h>
diff --git a/audio/core/4.0/default/PrimaryDevice.cpp b/audio/core/4.0/default/PrimaryDevice.cpp
index 0294b4d..e3e4976 100644
--- a/audio/core/4.0/default/PrimaryDevice.cpp
+++ b/audio/core/4.0/default/PrimaryDevice.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "PrimaryDeviceHAL"
 
 #include "core/4.0/default/PrimaryDevice.h"
-#include "core/all-versions/default/Util.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/PrimaryDevice.impl.h>
diff --git a/audio/core/4.0/default/Stream.cpp b/audio/core/4.0/default/Stream.cpp
index 30b3454..b8c71de 100644
--- a/audio/core/4.0/default/Stream.cpp
+++ b/audio/core/4.0/default/Stream.cpp
@@ -19,6 +19,7 @@
 #include "core/4.0/default/Stream.h"
 #include "common/all-versions/default/EffectMap.h"
 #include "core/4.0/default/Conversions.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/Stream.impl.h>
diff --git a/audio/core/4.0/default/StreamIn.cpp b/audio/core/4.0/default/StreamIn.cpp
index 18719b5..718bd25 100644
--- a/audio/core/4.0/default/StreamIn.cpp
+++ b/audio/core/4.0/default/StreamIn.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "StreamInHAL"
 
 #include "core/4.0/default/StreamIn.h"
-#include "core/all-versions/default/Util.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/StreamIn.impl.h>
diff --git a/audio/core/4.0/default/StreamOut.cpp b/audio/core/4.0/default/StreamOut.cpp
index 11c8fde..db88e40 100644
--- a/audio/core/4.0/default/StreamOut.cpp
+++ b/audio/core/4.0/default/StreamOut.cpp
@@ -17,7 +17,7 @@
 #define LOG_TAG "StreamOutHAL"
 
 #include "core/4.0/default/StreamOut.h"
-#include "core/all-versions/default/Util.h"
+#include "core/4.0/default/Util.h"
 
 #define AUDIO_HAL_VERSION V4_0
 #include <core/all-versions/default/StreamOut.impl.h>
diff --git a/audio/core/4.0/default/include/core/4.0/default/Util.h b/audio/core/4.0/default/include/core/4.0/default/Util.h
new file mode 100644
index 0000000..dcdc7ee
--- /dev/null
+++ b/audio/core/4.0/default/include/core/4.0/default/Util.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 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.
+ */
+
+#ifndef ANDROID_HARDWARE_AUDIO_V4_0_UTIL_H
+#define ANDROID_HARDWARE_AUDIO_V4_0_UTIL_H
+
+#include <android/hardware/audio/4.0/types.h>
+
+#define AUDIO_HAL_VERSION V4_0
+#include <core/all-versions/default/Util.h>
+#undef AUDIO_HAL_VERSION
+
+#endif  // ANDROID_HARDWARE_AUDIO_V4_0_UTIL_H
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
index 581e1dc..37b7124 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Device.impl.h
@@ -25,7 +25,6 @@
 #include <android/log.h>
 
 using ::android::hardware::audio::common::AUDIO_HAL_VERSION::HidlUtils;
-using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 
 namespace android {
 namespace hardware {
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
index 3907284..afff2b6 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/ParametersUtil.impl.h
@@ -149,26 +149,7 @@
 
 Result ParametersUtil::setParams(const AudioParameter& param) {
     int halStatus = halSetParameters(param.toString().string());
-    switch (halStatus) {
-        case OK:
-            return Result::OK;
-        case -EINVAL:
-            return Result::INVALID_ARGUMENTS;
-        case -ENODATA:
-            return Result::INVALID_STATE;
-        case -ENODEV:
-            return Result::NOT_INITIALIZED;
-        // The rest of the API (*::analyseStatus) returns NOT_SUPPORTED
-        // when the legacy API returns -ENOSYS
-        // However the legacy API explicitly state that for get_paramers,
-        // -ENOSYS should be returned if
-        // "the implementation does not accept a parameter change while the
-        //  output is active but the parameter is acceptable otherwise"
-        case -ENOSYS:
-            return Result::INVALID_STATE;
-        default:
-            return Result::INVALID_ARGUMENTS;
-    }
+    return util::analyzeStatus(halStatus);
 }
 
 }  // namespace implementation
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
index 9b39d9c..f3809e4 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/PrimaryDevice.impl.h
@@ -160,7 +160,7 @@
 
 // Methods from ::android::hardware::audio::AUDIO_HAL_VERSION::IPrimaryDevice follow.
 Return<Result> PrimaryDevice::setVoiceVolume(float volume) {
-    if (!all_versions::implementation::isGainNormalized(volume)) {
+    if (!isGainNormalized(volume)) {
         ALOGW("Can not set a voice volume (%f) outside [0,1]", volume);
         return Result::INVALID_ARGUMENTS;
     }
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
index fa0ef45..7415112 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Stream.impl.h
@@ -39,35 +39,14 @@
 
 // static
 Result Stream::analyzeStatus(const char* funcName, int status) {
-    static const std::vector<int> empty;
-    return analyzeStatus(funcName, status, empty);
+    return util::analyzeStatus("stream", funcName, status);
 }
 
-template <typename T>
-inline bool element_in(T e, const std::vector<T>& v) {
-    return std::find(v.begin(), v.end(), e) != v.end();
-}
 
 // static
 Result Stream::analyzeStatus(const char* funcName, int status,
                              const std::vector<int>& ignoreErrors) {
-    if (status != 0 && (ignoreErrors.empty() || !element_in(-status, ignoreErrors))) {
-        ALOGW("Error from HAL stream in function %s: %s", funcName, strerror(-status));
-    }
-    switch (status) {
-        case 0:
-            return Result::OK;
-        case -EINVAL:
-            return Result::INVALID_ARGUMENTS;
-        case -ENODATA:
-            return Result::INVALID_STATE;
-        case -ENODEV:
-            return Result::NOT_INITIALIZED;
-        case -ENOSYS:
-            return Result::NOT_SUPPORTED;
-        default:
-            return Result::INVALID_STATE;
-    }
+    return util::analyzeStatus("stream", funcName, status, ignoreErrors);
 }
 
 char* Stream::halGetParameters(const char* keys) {
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
index 8774be9..64c85ab 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamIn.impl.h
@@ -25,9 +25,7 @@
 #include <memory>
 
 using ::android::hardware::audio::AUDIO_HAL_VERSION::MessageQueueFlagBits;
-using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 #include "Conversions.h"
-#include "Util.h"
 
 namespace android {
 namespace hardware {
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
index 77098a8..6fb157f 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/StreamOut.impl.h
@@ -32,7 +32,6 @@
 namespace implementation {
 
 using ::android::hardware::audio::common::AUDIO_HAL_VERSION::ThreadInfo;
-using ::android::hardware::audio::all_versions::implementation::isGainNormalized;
 
 namespace {
 
diff --git a/audio/core/all-versions/default/include/core/all-versions/default/Util.h b/audio/core/all-versions/default/include/core/all-versions/default/Util.h
index 39d9dbd..350fd86 100644
--- a/audio/core/all-versions/default/include/core/all-versions/default/Util.h
+++ b/audio/core/all-versions/default/include/core/all-versions/default/Util.h
@@ -14,24 +14,61 @@
  * limitations under the License.
  */
 
-#ifndef ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H
-#define ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H
+#include <common/all-versions/IncludeGuard.h>
+
+#include <algorithm>
+#include <vector>
+
+#include <system/audio.h>
 
 namespace android {
 namespace hardware {
 namespace audio {
-namespace all_versions {
+namespace AUDIO_HAL_VERSION {
 namespace implementation {
 
+using ::android::hardware::audio::AUDIO_HAL_VERSION::Result;
+
 /** @return true if gain is between 0 and 1 included. */
 constexpr bool isGainNormalized(float gain) {
     return gain >= 0.0 && gain <= 1.0;
 }
 
+namespace util {
+
+template <typename T>
+inline bool element_in(T e, const std::vector<T>& v) {
+    return std::find(v.begin(), v.end(), e) != v.end();
+}
+
+static inline Result analyzeStatus(status_t status) {
+    switch (status) {
+        case 0:
+            return Result::OK;
+        case -EINVAL:
+            return Result::INVALID_ARGUMENTS;
+        case -ENODATA:
+            return Result::INVALID_STATE;
+        case -ENODEV:
+            return Result::NOT_INITIALIZED;
+        case -ENOSYS:
+            return Result::NOT_SUPPORTED;
+        default:
+            return Result::INVALID_STATE;
+    }
+}
+
+static inline Result analyzeStatus(const char* className, const char* funcName, status_t status,
+                                   const std::vector<int>& ignoreErrors = {}) {
+    if (status != 0 && !element_in(-status, ignoreErrors)) {
+        ALOGW("Error from HAL %s in function %s: %s", className, funcName, strerror(-status));
+    }
+    return analyzeStatus(status);
+}
+
+}  // namespace util
 }  // namespace implementation
-}  // namespace all_versions
+}  // namespace AUDIO_HAL_VERSION
 }  // namespace audio
 }  // namespace hardware
 }  // namespace android
-
-#endif  // ANDROID_HARDWARE_AUDIO_DEVICE_ALL_VERSIONS_UTIL_H