diff --git a/automotive/evs/1.0/IEvsDisplay.hal b/automotive/evs/1.0/IEvsDisplay.hal
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+++ b/automotive/evs/1.0/IEvsDisplay.hal
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+/*
+ * Copyright (C) 2016 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.automotive.evs@1.0;
+
+import types;
+
+
+/**
+ * Represents a single camera and is the primary interface for capturing images.
+ */
+interface IEvsDisplay {
+
+    /**
+     * Returns basic information about the EVS display provided by the system.
+     *
+     * See the description of the DisplayDesc structure below for details.
+     */
+     getDisplayInfo() generates (DisplayDesc info);
+
+
+    /**
+     * Clients may set the display state to express their desired state.
+     *
+     * The HAL implementation must gracefully accept a request for any state while in
+     * any other state, although the response may be to defer or ignore the request. The display
+     * is defined to start in the NOT_VISIBLE state upon initialization. The client is
+     * then expected to request the VISIBLE_ON_NEXT_FRAME state, and then begin providing
+     * video. When the display is no longer required, the client is expected to request
+     * the NOT_VISIBLE state after passing the last video frame.
+     * Returns INVALID_ARG if the requested state is not a recognized value.
+     */
+     setDisplayState(DisplayState state) generates (EvsResult result);
+
+
+    /**
+     * This call requests the current state of the display
+     *
+     * The HAL implementation should report the actual current state, which might
+     * transiently differ from the most recently requested state. Note, however, that
+     * the logic responsible for changing display states should generally live above
+     * the device layer, making it undesirable for the HAL implementation to spontaneously
+     * change display states.
+     */
+     getDisplayState() generates (DisplayState state);
+
+
+    /**
+     * This call returns a handle to a frame buffer associated with the display.
+     *
+     * The returned buffer may be locked and written to by software and/or GL. This buffer
+     * must be returned via a call to returnTargetBufferForDisplay() even if the
+     * display is no longer visible.
+     */
+     getTargetBuffer() generates (BufferDesc buffer);
+
+
+    /**
+     * This call tells the display that the buffer is ready for display.
+     *
+     * The buffer is no longer valid for use by the client after this call.
+     * There is no maximum time the caller may hold onto the buffer before making this
+     * call. The buffer may be returned at any time and in any DisplayState, but all
+     * buffers are expected to be returned before the IEvsDisplay interface is destroyed.
+     */
+    returnTargetBufferForDisplay(BufferDesc buffer) generates (EvsResult result);
+};