diff --git a/Android.mk b/Android.mk
deleted file mode 100644
index a126c52..0000000
--- a/Android.mk
+++ /dev/null
@@ -1,20 +0,0 @@
-#
-# Copyright (C) 2008 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)
-
-# TODO: Empty this file after all subdirectories' Android.mk have been
-#       converted to Android.bp to avoid using any newly added Android.mk.
-include $(call first-makefiles-under,$(LOCAL_PATH))
diff --git a/core/java/android/hardware/devicestate/OWNERS b/core/java/android/hardware/devicestate/OWNERS
new file mode 100644
index 0000000..d9b0e2e
--- /dev/null
+++ b/core/java/android/hardware/devicestate/OWNERS
@@ -0,0 +1 @@
+include /services/core/java/com/android/server/devicestate/OWNERS
diff --git a/core/jni/Android.bp b/core/jni/Android.bp
index 45bb629..8c6bf79 100644
--- a/core/jni/Android.bp
+++ b/core/jni/Android.bp
@@ -301,6 +301,7 @@
                 "libdebuggerd_client",
                 "libutils",
                 "libbinder",
+                "libbinderdebug",
                 "libbinder_ndk",
                 "libui",
                 "libgraphicsenv",
diff --git a/core/jni/android_os_Debug.cpp b/core/jni/android_os_Debug.cpp
index 9593fe58..3c2dccd 100644
--- a/core/jni/android_os_Debug.cpp
+++ b/core/jni/android_os_Debug.cpp
@@ -16,44 +16,46 @@
 
 #define LOG_TAG "android.os.Debug"
 
+#include "android_os_Debug.h"
+
+#include <android-base/file.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android-base/strings.h>
 #include <assert.h>
+#include <binderdebug/BinderDebug.h>
+#include <bionic/malloc.h>
 #include <ctype.h>
+#include <debuggerd/client.h>
+#include <dmabufinfo/dmabuf_sysfs_stats.h>
+#include <dmabufinfo/dmabufinfo.h>
 #include <errno.h>
 #include <fcntl.h>
 #include <inttypes.h>
+#include <log/log.h>
 #include <malloc.h>
+#include <meminfo/androidprocheaps.h>
+#include <meminfo/procmeminfo.h>
+#include <meminfo/sysmeminfo.h>
+#include <memtrack/memtrack.h>
+#include <memunreachable/memunreachable.h>
+#include <nativehelper/JNIPlatformHelp.h>
+#include <nativehelper/ScopedUtfChars.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <sys/time.h>
 #include <time.h>
 #include <unistd.h>
+#include <utils/String8.h>
+#include <utils/misc.h>
+#include <vintf/KernelConfigs.h>
 
 #include <iomanip>
 #include <string>
 #include <vector>
 
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <bionic/malloc.h>
-#include <debuggerd/client.h>
-#include <log/log.h>
-#include <utils/misc.h>
-#include <utils/String8.h>
-
-#include <nativehelper/JNIPlatformHelp.h>
-#include <nativehelper/ScopedUtfChars.h>
 #include "jni.h"
-#include <dmabufinfo/dmabuf_sysfs_stats.h>
-#include <dmabufinfo/dmabufinfo.h>
-#include <meminfo/androidprocheaps.h>
-#include <meminfo/procmeminfo.h>
-#include <meminfo/sysmeminfo.h>
-#include <memtrack/memtrack.h>
-#include <memunreachable/memunreachable.h>
-#include <android-base/strings.h>
-#include "android_os_Debug.h"
-#include <vintf/KernelConfigs.h>
 
 namespace android
 {
@@ -579,6 +581,15 @@
         return false;
     }
 
+    std::string binderState;
+    android::status_t status = android::getBinderTransactions(pid, binderState);
+    if (status == android::OK) {
+        if (!android::base::WriteStringToFd(binderState, fd)) {
+            PLOG(ERROR) << "Failed to dump binder state info for pid: " << pid;
+        }
+    } else {
+        PLOG(ERROR) << "Failed to get binder state info for pid: " << pid << " status: " << status;
+    }
     int res = dump_backtrace_to_file_timeout(pid, dumpType, timeoutSecs, fd);
     if (fdatasync(fd.get()) != 0) {
         PLOG(ERROR) << "Failed flushing trace.";
diff --git a/media/java/android/media/MediaCodec.java b/media/java/android/media/MediaCodec.java
index 2018a39..17c4a77 100644
--- a/media/java/android/media/MediaCodec.java
+++ b/media/java/android/media/MediaCodec.java
@@ -2364,12 +2364,16 @@
         }
 
         // at the moment no codecs support detachable surface
+        boolean canDetach = GetFlag(() -> android.media.codec.Flags.nullOutputSurfaceSupport());
         if (GetFlag(() -> android.media.codec.Flags.nullOutputSurface())) {
             // Detached surface flag is only meaningful if surface is null. Otherwise, it is
             // ignored.
-            if (surface == null && (flags & CONFIGURE_FLAG_DETACHED_SURFACE) != 0) {
+            if (surface == null && (flags & CONFIGURE_FLAG_DETACHED_SURFACE) != 0 && !canDetach) {
                 throw new IllegalArgumentException("Codec does not support detached surface");
             }
+        } else {
+            // don't allow detaching if API is disabled
+            canDetach = false;
         }
 
         String[] keys = null;
@@ -2411,6 +2415,14 @@
         }
 
         native_configure(keys, values, surface, crypto, descramblerBinder, flags);
+
+        if (canDetach) {
+            // If we were able to configure native codec with a detached surface
+            // we now know that we have a surface.
+            if (surface == null && (flags & CONFIGURE_FLAG_DETACHED_SURFACE) != 0) {
+                mHasSurface = true;
+            }
+        }
     }
 
     /**
@@ -2455,12 +2467,19 @@
         if (!mHasSurface) {
             throw new IllegalStateException("codec was not configured for an output surface");
         }
+
         // note: we still have a surface in detached mode, so keep mHasSurface
         // we also technically allow calling detachOutputSurface multiple times in a row
-        throw new IllegalStateException("codec does not support detaching output surface");
-        // native_detachSurface();
+
+        if (GetFlag(() -> android.media.codec.Flags.nullOutputSurfaceSupport())) {
+            native_detachOutputSurface();
+        } else {
+            throw new IllegalStateException("codec does not support detaching output surface");
+        }
     }
 
+    private native void native_detachOutputSurface();
+
     /**
      * Create a persistent input surface that can be used with codecs that normally have an input
      * surface, such as video encoders. A persistent input can be reused by subsequent
diff --git a/media/jni/android_media_MediaCodec.cpp b/media/jni/android_media_MediaCodec.cpp
index 0fc80dd..82561f9 100644
--- a/media/jni/android_media_MediaCodec.cpp
+++ b/media/jni/android_media_MediaCodec.cpp
@@ -389,6 +389,14 @@
     return err;
 }
 
+status_t JMediaCodec::detachOutputSurface() {
+    status_t err = mCodec->detachOutputSurface();
+    if (err == OK) {
+        mSurfaceTextureClient.clear();
+    }
+    return err;
+}
+
 status_t JMediaCodec::createInputSurface(
         sp<IGraphicBufferProducer>* bufferProducer) {
     return mCodec->createInputSurface(bufferProducer);
@@ -1798,6 +1806,20 @@
     throwExceptionAsNecessary(env, err, codec);
 }
 
+static void android_media_MediaCodec_native_detachOutputSurface(
+        JNIEnv *env,
+        jobject thiz) {
+    sp<JMediaCodec> codec = getMediaCodec(env, thiz);
+
+    if (codec == NULL || codec->initCheck() != OK) {
+        throwExceptionAsNecessary(env, INVALID_OPERATION, codec);
+        return;
+    }
+
+    status_t err = codec->detachOutputSurface();
+    throwExceptionAsNecessary(env, err, codec);
+}
+
 sp<PersistentSurface> android_media_MediaCodec_getPersistentInputSurface(
         JNIEnv* env, jobject object) {
     sp<PersistentSurface> persistentSurface;
@@ -4107,6 +4129,10 @@
       "(Landroid/view/Surface;)V",
       (void *)android_media_MediaCodec_native_setSurface },
 
+    { "native_detachOutputSurface",
+      "()V",
+      (void *)android_media_MediaCodec_native_detachOutputSurface },
+
     { "createInputSurface", "()Landroid/view/Surface;",
       (void *)android_media_MediaCodec_createInputSurface },
 
diff --git a/media/jni/android_media_MediaCodec.h b/media/jni/android_media_MediaCodec.h
index abb23f5..c9b6b7f6 100644
--- a/media/jni/android_media_MediaCodec.h
+++ b/media/jni/android_media_MediaCodec.h
@@ -80,6 +80,8 @@
     status_t setSurface(
             const sp<IGraphicBufferProducer> &surface);
 
+    status_t detachOutputSurface();
+
     status_t createInputSurface(sp<IGraphicBufferProducer>* bufferProducer);
     status_t setInputSurface(const sp<PersistentSurface> &surface);
 
diff --git a/services/core/java/com/android/server/am/LmkdStatsReporter.java b/services/core/java/com/android/server/am/LmkdStatsReporter.java
index 8266299..b55f35d 100644
--- a/services/core/java/com/android/server/am/LmkdStatsReporter.java
+++ b/services/core/java/com/android/server/am/LmkdStatsReporter.java
@@ -34,7 +34,6 @@
     static final String TAG = TAG_WITH_CLASS_NAME ? "LmkdStatsReporter" : TAG_AM;
 
     public static final int KILL_OCCURRED_MSG_SIZE = 80;
-    public static final int STATE_CHANGED_MSG_SIZE = 8;
 
     private static final int PRESSURE_AFTER_KILL = 0;
     private static final int NOT_RESPONDING = 1;
@@ -80,16 +79,6 @@
         }
     }
 
-    /**
-     * Processes the LMK_STATE_CHANGED packet
-     * Logs the change in LMKD state which is used as start/stop boundaries for logging
-     * LMK_KILL_OCCURRED event.
-     * Code: LMK_STATE_CHANGED = 54
-     */
-    public static void logStateChanged(int state) {
-        FrameworkStatsLog.write(FrameworkStatsLog.LMK_STATE_CHANGED, state);
-    }
-
     private static int mapKillReason(int reason) {
         switch (reason) {
             case PRESSURE_AFTER_KILL:
diff --git a/services/core/java/com/android/server/am/ProcessList.java b/services/core/java/com/android/server/am/ProcessList.java
index 65c2cc5..e876527 100644
--- a/services/core/java/com/android/server/am/ProcessList.java
+++ b/services/core/java/com/android/server/am/ProcessList.java
@@ -349,7 +349,7 @@
     // LMK_PROCKILL
     // LMK_UPDATE_PROPS
     // LMK_KILL_OCCURRED
-    // LMK_STATE_CHANGED
+    // LMK_START_MONITORING
     static final byte LMK_TARGET = 0;
     static final byte LMK_PROCPRIO = 1;
     static final byte LMK_PROCREMOVE = 2;
@@ -359,7 +359,6 @@
     static final byte LMK_PROCKILL = 6; // Note: this is an unsolicited command
     static final byte LMK_UPDATE_PROPS = 7;
     static final byte LMK_KILL_OCCURRED = 8; // Msg to subscribed clients on kill occurred event
-    static final byte LMK_STATE_CHANGED = 9; // Msg to subscribed clients on state changed
     static final byte LMK_START_MONITORING = 9; // Start monitoring if delayed earlier
 
     // Low Memory Killer Daemon command codes.
@@ -960,14 +959,6 @@
                                                 foregroundServices.first,
                                                 foregroundServices.second);
                                         return true;
-                                    case LMK_STATE_CHANGED:
-                                        if (receivedLen
-                                                != LmkdStatsReporter.STATE_CHANGED_MSG_SIZE) {
-                                            return false;
-                                        }
-                                        final int state = inputData.readInt();
-                                        LmkdStatsReporter.logStateChanged(state);
-                                        return true;
                                     default:
                                         return false;
                                 }
diff --git a/services/core/java/com/android/server/devicestate/OWNERS b/services/core/java/com/android/server/devicestate/OWNERS
index ae79fc0..43f3f0c 100644
--- a/services/core/java/com/android/server/devicestate/OWNERS
+++ b/services/core/java/com/android/server/devicestate/OWNERS
@@ -1,3 +1,4 @@
 ogunwale@google.com
 akulian@google.com
-darryljohnson@google.com
+lihongyu@google.com
+kennethford@google.com