diff --git a/broadcastradio/1.1/ITuner.hal b/broadcastradio/1.1/ITuner.hal
index 82d45c6..dc74eb9 100644
--- a/broadcastradio/1.1/ITuner.hal
+++ b/broadcastradio/1.1/ITuner.hal
@@ -47,8 +47,8 @@
      *
      * @return result OK if the scan was properly scheduled (this does not mean
      *                it successfully finished).
-     *                TEMPORARILY_UNAVAILABLE if the background scan is
-     *                temporarily unavailable, ie. due to ongoing foreground
+     *                UNAVAILABLE if the background scan is unavailable,
+     *                ie. temporarily due to ongoing foreground
      *                playback in single-tuner device.
      *                NOT_INITIALIZED other error, ie. HW failure.
      */
diff --git a/broadcastradio/1.1/ITunerCallback.hal b/broadcastradio/1.1/ITunerCallback.hal
index 1ea57e9..178568a 100644
--- a/broadcastradio/1.1/ITunerCallback.hal
+++ b/broadcastradio/1.1/ITunerCallback.hal
@@ -40,11 +40,19 @@
     oneway afSwitch_1_1(ProgramInfo info);
 
     /**
+     * Called by the HAL when background scan feature becomes available or not.
+     *
+     * @param isAvailable true, if the tuner turned temporarily background-
+     *                    capable, false in the other case.
+     */
+    oneway backgroundScanAvailable(bool isAvailable);
+
+    /**
      * Called by the HAL when background scan initiated by startBackgroundScan
      * finishes. If the list was changed, programListChanged must be called too.
      * @param result OK if the scan succeeded, client may retrieve the actual
      *               list with ITuner::getProgramList.
-     *               TEMPORARILY_UNAVAILABLE if the scan was interrupted due to
+     *               UNAVAILABLE if the scan was interrupted due to
      *               hardware becoming temporarily unavailable.
      *               NOT_INITIALIZED other error, ie. HW failure.
      */
diff --git a/broadcastradio/1.1/types.hal b/broadcastradio/1.1/types.hal
index 3021f2e..3016efe 100644
--- a/broadcastradio/1.1/types.hal
+++ b/broadcastradio/1.1/types.hal
@@ -23,7 +23,7 @@
 enum ProgramListResult : Result {
     NOT_READY,
     NOT_STARTED,
-    TEMPORARILY_UNAVAILABLE,
+    UNAVAILABLE,
 };
 
 /**
diff --git a/broadcastradio/1.1/vts/functional/VtsHalBroadcastradioV1_1TargetTest.cpp b/broadcastradio/1.1/vts/functional/VtsHalBroadcastradioV1_1TargetTest.cpp
index d3c05c4..aa5ab54 100644
--- a/broadcastradio/1.1/vts/functional/VtsHalBroadcastradioV1_1TargetTest.cpp
+++ b/broadcastradio/1.1/vts/functional/VtsHalBroadcastradioV1_1TargetTest.cpp
@@ -129,6 +129,10 @@
             return Void();
         }
 
+        virtual Return<void> backgroundScanAvailable(bool isAvailable __unused) {
+            return Void();
+        }
+
         virtual Return<void> backgroundScanComplete(ProgramListResult result __unused) {
             return Void();
         }
diff --git a/graphics/common/1.0/types.hal b/graphics/common/1.0/types.hal
index dfecec1..70cb8ec 100644
--- a/graphics/common/1.0/types.hal
+++ b/graphics/common/1.0/types.hal
@@ -181,9 +181,17 @@
      *    - GRALLOC_USAGE_SW_*
      *    - GRALLOC_USAGE_RENDERSCRIPT
      *
-     * When used with ANativeWindow, the dataSpace should be
-     * HAL_DATASPACE_ARBITRARY, as raw image sensor buffers require substantial
-     * extra metadata to define.
+     * When used with ANativeWindow, the mapping of the dataSpace field to
+     * buffer contents for RAW16 is as follows:
+     *
+     *  dataSpace value               | Buffer contents
+     * -------------------------------+-----------------------------------------
+     *  HAL_DATASPACE_ARBITRARY       | Raw image sensor data, layout is as
+     *                                | defined above.
+     *  HAL_DATASPACE_DEPTH           | Unprocessed implementation-dependent raw
+     *                                | depth measurements, opaque with 16 bit
+     *                                | samples.
+     *  Other                         | Unsupported
      */
     RAW16 = 0x20,