diff --git a/Android.bp b/Android.bp
index 6f85a70..f281faf 100644
--- a/Android.bp
+++ b/Android.bp
@@ -5,6 +5,7 @@
     "benchmarks/msgq/1.0",
     "graphics/allocator/2.0",
     "graphics/allocator/2.0/default",
+    "graphics/mapper/2.0",
     "memtrack/1.0",
     "memtrack/1.0/default",
     "nfc/1.0",
diff --git a/graphics/mapper/2.0/Android.bp b/graphics/mapper/2.0/Android.bp
new file mode 100644
index 0000000..3718503
--- /dev/null
+++ b/graphics/mapper/2.0/Android.bp
@@ -0,0 +1,15 @@
+genrule {
+    name: "android.hardware.graphics.mapper@2.0_genc++_headers",
+    cmd: "cp $in $genDir/android/hardware/graphics/mapper/2.0",
+    srcs: ["IMapper.h", "types.h"],
+    out: [
+        "android/hardware/graphics/mapper/2.0/IMapper.h",
+        "android/hardware/graphics/mapper/2.0/types.h",
+    ],
+}
+
+cc_library_static {
+    name: "android.hardware.graphics.mapper@2.0",
+    generated_headers: ["android.hardware.graphics.mapper@2.0_genc++_headers"],
+    export_generated_headers: ["android.hardware.graphics.mapper@2.0_genc++_headers"],
+}
diff --git a/graphics/mapper/2.0/IMapper.h b/graphics/mapper/2.0/IMapper.h
new file mode 100644
index 0000000..23faa80
--- /dev/null
+++ b/graphics/mapper/2.0/IMapper.h
@@ -0,0 +1,388 @@
+/*
+ * Copyright 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.
+ */
+
+#ifndef ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_IMAPPER_H
+#define ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_IMAPPER_H
+
+#include <type_traits>
+
+#include <android/hardware/graphics/mapper/2.0/types.h>
+
+extern "C" {
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V2_0 {
+
+struct Device {
+    struct Rect {
+        int32_t left;
+        int32_t top;
+        int32_t width;
+        int32_t height;
+    };
+    static_assert(std::is_pod<Rect>::value, "Device::Rect is not POD");
+
+    /*
+     * Create a mapper device.
+     *
+     * @return error is NONE upon success. Otherwise,
+     *                  NOT_SUPPORTED when creation will never succeed.
+     *                  BAD_RESOURCES when creation failed at this time.
+     * @return device is the newly created mapper device.
+     */
+    typedef Error (*createDevice)(Device** outDevice);
+
+    /*
+     * Destroy a mapper device.
+     *
+     * @return error is always NONE.
+     * @param device is the mapper device to destroy.
+     */
+    typedef Error (*destroyDevice)(Device* device);
+
+    /*
+     * Adds a reference to the given buffer handle.
+     *
+     * A buffer handle received from a remote process or exported by
+     * IAllocator::exportHandle is unknown to this client-side library. There
+     * is also no guarantee that the buffer's backing store will stay alive.
+     * This function must be called at least once in both cases to intrdouce
+     * the buffer handle to this client-side library and to secure the backing
+     * store. It may also be called more than once to increase the reference
+     * count if two components in the same process want to interact with the
+     * buffer independently.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer to which a reference must be added.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid
+     *                  NO_RESOURCES when it is not possible to add a
+     *                               reference to this buffer at this time
+     */
+    typedef Error (*retain)(Device* device,
+                            const native_handle_t* bufferHandle);
+
+    /*
+     * Removes a reference from the given buffer buffer.
+     *
+     * If no references remain, the buffer handle should be freed with
+     * native_handle_close/native_handle_delete. When the last buffer handle
+     * referring to a particular backing store is freed, that backing store
+     * should also be freed.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which a reference must be
+     *        removed.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     */
+    typedef Error (*release)(Device* device,
+                             const native_handle_t* bufferHandle);
+
+    /*
+     * Gets the width and height of the buffer in pixels.
+     *
+     * See IAllocator::BufferDescriptorInfo for more information.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get the dimensions.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return width is the width of the buffer in pixels.
+     * @return height is the height of the buffer in pixels.
+     */
+    typedef Error (*getDimensions)(Device* device,
+                                   const native_handle_t* bufferHandle,
+                                   uint32_t* outWidth,
+                                   uint32_t* outHeight);
+
+    /*
+     * Gets the format of the buffer.
+     *
+     * See IAllocator::BufferDescriptorInfo for more information.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get format.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return format is the format of the buffer.
+     */
+    typedef Error (*getFormat)(Device* device,
+                               const native_handle_t* bufferHandle,
+                               PixelFormat* outFormat);
+
+    /*
+     * Gets the producer usage flags which were used to allocate this buffer.
+     *
+     * See IAllocator::BufferDescriptorInfo for more information.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get the producer usage
+     *        flags.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return usageMask contains the producer usage flags of the buffer.
+     */
+    typedef Error (*getProducerUsageMask)(Device* device,
+                                          const native_handle_t* bufferHandle,
+                                          uint64_t* outUsageMask);
+
+    /*
+     * Gets the consumer usage flags which were used to allocate this buffer.
+     *
+     * See IAllocator::BufferDescriptorInfo for more information.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get the consumer usage
+     *        flags.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return usageMask contains the consumer usage flags of the buffer.
+     */
+    typedef Error (*getConsumerUsageMask)(Device* device,
+                                          const native_handle_t* bufferHandle,
+                                          uint64_t* outUsageMask);
+
+    /*
+     * Gets a value that uniquely identifies the backing store of the given
+     * buffer.
+     *
+     * Buffers which share a backing store should return the same value from
+     * this function. If the buffer is present in more than one process, the
+     * backing store value for that buffer is not required to be the same in
+     * every process.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get the backing store
+     *        identifier.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return store is the backing store identifier for this buffer.
+     */
+    typedef Error (*getBackingStore)(Device* device,
+                                     const native_handle_t* bufferHandle,
+                                     BackingStore* outStore);
+
+    /*
+     * Gets the stride of the buffer in pixels.
+     *
+     * The stride is the offset in pixel-sized elements between the same
+     * column in two adjacent rows of pixels. This may not be equal to the
+     * width of the buffer.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer from which to get the stride.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     *                  UNDEFINED when the notion of a stride is not
+     *                            meaningful for the buffer format.
+     * @return store is the stride in pixels.
+     */
+    typedef Error (*getStride)(Device* device,
+                               const native_handle_t* bufferHandle,
+                               uint32_t* outStride);
+
+    /*
+     * Returns the number of flex layout planes which are needed to represent
+     * the given buffer. This may be used to efficiently allocate only as many
+     * plane structures as necessary before calling into lockFlex.
+     *
+     * If the given buffer cannot be locked as a flex format, this function
+     * may return UNSUPPORTED (as lockFlex would).
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer for which the number of planes should
+     *        be queried.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     *                  UNSUPPORTED when the buffer's format cannot be
+     *                              represented in a flex layout.
+     * @return numPlanes is the number of flex planes required to describe the
+     *         given buffer.
+     */
+    typedef Error (*getNumFlexPlanes)(Device* device,
+                                      const native_handle_t* bufferHandle,
+                                      uint32_t* outNumPlanes);
+
+    /*
+     * Locks the given buffer for the specified CPU usage.
+     *
+     * Exactly one of producerUsageMask and consumerUsageMask must be 0. The
+     * usage which is not 0 must be one of the *Usage::CPU* values, as
+     * applicable. Locking a buffer for a non-CPU usage is not supported.
+     *
+     * Locking the same buffer simultaneously from multiple threads is
+     * permitted, but if any of the threads attempt to lock the buffer for
+     * writing, the behavior is undefined, except that it must not cause
+     * process termination or block the client indefinitely. Leaving the
+     * buffer content in an indeterminate state or returning an error are both
+     * acceptable.
+     *
+     * The client must not modify the content of the buffer outside of
+     * accessRegion, and the device need not guarantee that content outside of
+     * accessRegion is valid for reading. The result of reading or writing
+     * outside of accessRegion is undefined, except that it must not cause
+     * process termination.
+     *
+     * data will be filled with a pointer to the locked buffer memory. This
+     * address will represent the top-left corner of the entire buffer, even
+     * if accessRegion does not begin at the top-left corner.
+     *
+     * acquireFence is a file descriptor referring to a acquire sync fence
+     * object, which will be signaled when it is safe for the device to access
+     * the contents of the buffer (prior to locking). If it is already safe to
+     * access the buffer contents, -1 may be passed instead.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer to lock.
+     * @param producerUsageMask contains the producer usage flags to request;
+     *        either this or consumerUsagemask must be 0, and the other must
+     *        be a CPU usage.
+     * @param consumerUsageMask contains the consumer usage flags to request;
+     *        either this or producerUsageMask must be 0, and the other must
+     *        be a CPU usage.
+     * @param accessRegion is the portion of the buffer that the client
+     *        intends to access.
+     * @param acquireFence is a sync fence file descriptor as described above.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     *                  BAD_VALUE when neither or both of producerUsageMask
+     *                            and consumerUsageMask were 0, or the usage
+     *                            which was not 0 was not a CPU usage.
+     *                  NO_RESOURCES when the buffer cannot be locked at this
+     *                               time, but locking may succeed at a future
+     *                               time.
+     *                  UNSUPPORTED when the buffer cannot be locked with the
+     *                              given usage, and any future attempts at
+     *                              locking will also fail.
+     * @return data will be filled with a CPU-accessible pointer to the buffer
+     *         data.
+     */
+    typedef Error (*lock)(Device* device,
+                          const native_handle_t* bufferHandle,
+                          uint64_t producerUsageMask,
+                          uint64_t consumerUsageMask,
+                          const Rect* accessRegion,
+                          int32_t acquireFence,
+                          void** outData);
+
+    /*
+     * This is largely the same as lock(), except that instead of returning a
+     * pointer directly to the buffer data, it returns an FlexLayout struct
+     * describing how to access the data planes.
+     *
+     * This function must work on buffers with PixelFormat::YCbCr_*_888 if
+     * supported by the device, as well as with any other formats requested by
+     * multimedia codecs when they are configured with a
+     * flexible-YUV-compatible color format.
+     *
+     * This function may also be called on buffers of other formats, including
+     * non-YUV formats, but if the buffer format is not compatible with a
+     * flexible representation, it may return UNSUPPORTED.
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer to lock.
+     * @param producerUsageMask contains the producer usage flags to request;
+     *        either this or consumerUsagemask must be 0, and the other must
+     *        be a CPU usage.
+     * @param consumerUsageMask contains the consumer usage flags to request;
+     *        either this or producerUsageMask must be 0, and the other must
+     *        be a CPU usage.
+     * @param accessRegion is the portion of the buffer that the client
+     *        intends to access.
+     * @param acquireFence is a sync fence file descriptor as described in
+     *        lock().
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     *                  BAD_VALUE when neither or both of producerUsageMask
+     *                            and consumerUsageMask were 0, or the usage
+     *                            which was not 0 was not a CPU usage.
+     *                  NO_RESOURCES when the buffer cannot be locked at this
+     *                               time, but locking may succeed at a future
+     *                               time.
+     *                  UNSUPPORTED when the buffer cannot be locked with the
+     *                              given usage, and any future attempts at
+     *                              locking will also fail.
+     * @return flexLayout will be filled with the description of the planes in
+     *         the buffer.
+     */
+    typedef Error (*lockFlex)(Device* device,
+                              const native_handle_t* bufferHandle,
+                              uint64_t producerUsageMask,
+                              uint64_t consumerUsageMask,
+                              const Rect* accessRegion,
+                              int32_t acquireFence,
+                              FlexLayout* outFlexLayout);
+
+    /*
+     * This function indicates to the device that the client will be done with
+     * the buffer when releaseFence signals.
+     *
+     * releaseFence will be filled with a file descriptor referring to a
+     * release sync fence object, which will be signaled when it is safe to
+     * access the contents of the buffer (after the buffer has been unlocked).
+     * If it is already safe to access the buffer contents, then -1 may be
+     * returned instead.
+     *
+     * This function is used to unlock both buffers locked by lock() and those
+     * locked by lockFlex().
+     *
+     * @param device is the mapper device.
+     * @param bufferHandle is the buffer to unlock.
+     * @return error is NONE upon success. Otherwise,
+     *                  BAD_BUFFER when the buffer handle is invalid.
+     * @return releaseFence is a sync fence file descriptor as described
+     *         above.
+     */
+    typedef Error (*unlock)(Device* device,
+                            const native_handle_t* bufferHandle,
+                            int32_t* outReleaseFence);
+};
+static_assert(std::is_pod<Device>::value, "Device is not POD");
+
+struct IMapper {
+    Device::createDevice createDevice;
+    Device::destroyDevice destroyDevice;
+
+    Device::retain retain;
+    Device::release release;
+    Device::getDimensions getDimensions;
+    Device::getFormat getFormat;
+    Device::getProducerUsageMask getProducerUsageMask;
+    Device::getConsumerUsageMask getConsumerUsageMask;
+    Device::getBackingStore getBackingStore;
+    Device::getStride getStride;
+    Device::getNumFlexPlanes getNumFlexPlanes;
+    Device::lock lock;
+    Device::lockFlex lockFlex;
+    Device::unlock unlock;
+};
+static_assert(std::is_pod<IMapper>::value, "IMapper is not POD");
+
+} // namespace V2_0
+} // namespace mapper
+} // namespace graphics
+} // namespace hardware
+} // namespace android
+
+const void* HALLIB_FETCH_Interface(const char* name);
+
+} // extern "C"
+
+#endif /* ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_IMAPPER_H */
diff --git a/graphics/mapper/2.0/types.h b/graphics/mapper/2.0/types.h
new file mode 100644
index 0000000..63a6b16
--- /dev/null
+++ b/graphics/mapper/2.0/types.h
@@ -0,0 +1,164 @@
+/*
+ * Copyright 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.
+ */
+
+#ifndef ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_TYPES_H
+#define ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_TYPES_H
+
+#include <type_traits>
+
+#include <android/hardware/graphics/allocator/2.0/types.h>
+
+namespace android {
+namespace hardware {
+namespace graphics {
+namespace mapper {
+namespace V2_0 {
+
+using android::hardware::graphics::allocator::V2_0::Error;
+using android::hardware::graphics::allocator::V2_0::PixelFormat;
+using android::hardware::graphics::allocator::V2_0::ProducerUsage;
+using android::hardware::graphics::allocator::V2_0::ConsumerUsage;
+
+/*
+ * Structures for describing flexible YUVA/RGBA formats for consumption by
+ * applications. Such flexible formats contain a plane for each component
+ * (e.g.  red, green, blue), where each plane is laid out in a grid-like
+ * pattern occupying unique byte addresses and with consistent byte offsets
+ * between neighboring pixels.
+ *
+ * The FlexLayout structure is used with any pixel format that can be
+ * represented by it, such as:
+ *
+ *  - PixelFormat::YCbCr_*_888
+ *  - PixelFormat::FLEX_RGB*_888
+ *  - PixelFormat::RGB[AX]_888[8],BGRA_8888,RGB_888
+ *  - PixelFormat::YV12,Y8,Y16,YCbCr_422_SP/I,YCrCb_420_SP
+ *  - even implementation defined formats that can be represented by the
+ *    structures
+ *
+ * Vertical increment (aka. row increment or stride) describes the distance in
+ * bytes from the first pixel of one row to the first pixel of the next row
+ * (below) for the component plane. This can be negative.
+ *
+ * Horizontal increment (aka. column or pixel increment) describes the
+ * distance in bytes from one pixel to the next pixel (to the right) on the
+ * same row for the component plane. This can be negative.
+ *
+ * Each plane can be subsampled either vertically or horizontally by a
+ * power-of-two factor.
+ *
+ * The bit-depth of each component can be arbitrary, as long as the pixels are
+ * laid out on whole bytes, in native byte-order, using the most significant
+ * bits of each unit.
+ */
+
+enum class FlexComponent : int32_t {
+    Y          = 1 << 0,  /* luma */
+    Cb         = 1 << 1,  /* chroma blue */
+    Cr         = 1 << 2,  /* chroma red */
+
+    R          = 1 << 10, /* red */
+    G          = 1 << 11, /* green */
+    B          = 1 << 12, /* blue */
+
+    A          = 1 << 30, /* alpha */
+};
+
+inline FlexComponent operator|(FlexComponent lhs, FlexComponent rhs)
+{
+    return static_cast<FlexComponent>(static_cast<int32_t>(lhs) |
+                                      static_cast<int32_t>(rhs));
+}
+
+inline FlexComponent& operator|=(FlexComponent &lhs, FlexComponent rhs)
+{
+    lhs = static_cast<FlexComponent>(static_cast<int32_t>(lhs) |
+                                     static_cast<int32_t>(rhs));
+    return lhs;
+}
+
+enum class FlexFormat : int32_t {
+    /* not a flexible format */
+    INVALID    = 0x0,
+
+    Y          = static_cast<int32_t>(FlexComponent::Y),
+    YCbCr      = static_cast<int32_t>(FlexComponent::Y) |
+                 static_cast<int32_t>(FlexComponent::Cb) |
+                 static_cast<int32_t>(FlexComponent::Cr),
+    YCbCrA     = static_cast<int32_t>(YCbCr) |
+                 static_cast<int32_t>(FlexComponent::A),
+    RGB        = static_cast<int32_t>(FlexComponent::R) |
+                 static_cast<int32_t>(FlexComponent::G) |
+                 static_cast<int32_t>(FlexComponent::B),
+    RGBA       = static_cast<int32_t>(RGB) |
+                 static_cast<int32_t>(FlexComponent::A),
+};
+
+struct FlexPlane {
+    /* pointer to the first byte of the top-left pixel of the plane. */
+    uint8_t *topLeft;
+
+    FlexComponent component;
+
+    /*
+     * bits allocated for the component in each pixel. Must be a positive
+     * multiple of 8.
+     */
+    int32_t bitsPerComponent;
+
+    /*
+     * number of the most significant bits used in the format for this
+     * component. Must be between 1 and bits_per_component, inclusive.
+     */
+    int32_t bitsUsed;
+
+    /* horizontal increment */
+    int32_t hIncrement;
+    /* vertical increment */
+    int32_t vIncrement;
+
+    /* horizontal subsampling. Must be a positive power of 2. */
+    int32_t hSubsampling;
+    /* vertical subsampling. Must be a positive power of 2. */
+    int32_t vSubsampling;
+};
+static_assert(std::is_pod<FlexPlane>::value, "FlexPlane is not POD");
+
+struct FlexLayout {
+    /* the kind of flexible format */
+    FlexFormat format;
+
+    /* number of planes; 0 for FLEX_FORMAT_INVALID */
+    uint32_t numPlanes;
+
+    /*
+     * a plane for each component; ordered in increasing component value order.
+     * E.g. FLEX_FORMAT_RGBA maps 0 -> R, 1 -> G, etc.
+     * Can be NULL for FLEX_FORMAT_INVALID
+     */
+    FlexPlane* planes;
+};
+static_assert(std::is_pod<FlexLayout>::value, "FlexLayout is not POD");
+
+typedef uint64_t BackingStore;
+
+} // namespace V2_0
+} // namespace mapper
+} // namespace graphics
+} // namespace hardware
+} // namespace android
+
+#endif /* ANDROID_HARDWARE_GRAPHICS_MAPPER_V2_0_TYPES_H */