diff --git a/minui/Android.bp b/minui/Android.bp
index fff3a8e..8258816 100644
--- a/minui/Android.bp
+++ b/minui/Android.bp
@@ -27,14 +27,12 @@
     srcs: [
         "events.cpp",
         "graphics.cpp",
-        "graphics_adf.cpp",
         "graphics_drm.cpp",
         "graphics_fbdev.cpp",
         "resources.cpp",
     ],
 
     whole_static_libs: [
-        "libadf",
         "libdrm",
         "libsync",
     ],
diff --git a/minui/graphics.cpp b/minui/graphics.cpp
index d34da56..dce1e61 100644
--- a/minui/graphics.cpp
+++ b/minui/graphics.cpp
@@ -25,7 +25,6 @@
 
 #include <android-base/properties.h>
 
-#include "graphics_adf.h"
 #include "graphics_drm.h"
 #include "graphics_fbdev.h"
 #include "minui/minui.h"
@@ -362,15 +361,10 @@
            ret);
   }
 
-  auto backend = std::unique_ptr<MinuiBackend>{ std::make_unique<MinuiBackendAdf>() };
+  auto backend = std::unique_ptr<MinuiBackend>{ std::make_unique<MinuiBackendDrm>() };
   gr_draw = backend->Init();
 
   if (!gr_draw) {
-    backend = std::make_unique<MinuiBackendDrm>();
-    gr_draw = backend->Init();
-  }
-
-  if (!gr_draw) {
     backend = std::make_unique<MinuiBackendFbdev>();
     gr_draw = backend->Init();
   }
diff --git a/minui/graphics_adf.cpp b/minui/graphics_adf.cpp
deleted file mode 100644
index 10cd607..0000000
--- a/minui/graphics_adf.cpp
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * Copyright (C) 2014 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.
- */
-
-#include "graphics_adf.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sys/mman.h>
-#include <unistd.h>
-
-#include <adf/adf.h>
-#include <sync/sync.h>
-
-#include "minui/minui.h"
-
-GRSurfaceAdf::~GRSurfaceAdf() {
-  if (mmapped_buffer_) {
-    munmap(mmapped_buffer_, pitch * height);
-  }
-  if (fence_fd != -1) {
-    close(fence_fd);
-  }
-  if (fd != -1) {
-    close(fd);
-  }
-}
-
-std::unique_ptr<GRSurfaceAdf> GRSurfaceAdf::Create(int intf_fd, const drm_mode_modeinfo* mode,
-                                                   __u32 format, int* err) {
-  __u32 offset;
-  __u32 pitch;
-  auto fd = adf_interface_simple_buffer_alloc(intf_fd, mode->hdisplay, mode->vdisplay, format,
-                                              &offset, &pitch);
-
-  if (fd < 0) {
-    *err = fd;
-    return nullptr;
-  }
-
-  std::unique_ptr<GRSurfaceAdf> surf = std::unique_ptr<GRSurfaceAdf>(
-      new GRSurfaceAdf(mode->hdisplay, mode->vdisplay, pitch, (format == DRM_FORMAT_RGB565 ? 2 : 4),
-                       offset, pitch, fd));
-
-  auto mmapped =
-      mmap(nullptr, surf->pitch * surf->height, PROT_WRITE, MAP_SHARED, surf->fd, surf->offset);
-  if (mmapped == MAP_FAILED) {
-    *err = -errno;
-    return nullptr;
-  }
-  surf->mmapped_buffer_ = static_cast<uint8_t*>(mmapped);
-  return surf;
-}
-
-MinuiBackendAdf::MinuiBackendAdf() : intf_fd(-1), dev(), current_surface(0), n_surfaces(0) {}
-
-int MinuiBackendAdf::InterfaceInit() {
-  adf_interface_data intf_data;
-  if (int err = adf_get_interface_data(intf_fd, &intf_data); err < 0) return err;
-
-  int result = 0;
-  surfaces[0] = GRSurfaceAdf::Create(intf_fd, &intf_data.current_mode, format, &result);
-  if (!surfaces[0]) {
-    fprintf(stderr, "Failed to allocate surface 0: %s\n", strerror(-result));
-    goto done;
-  }
-
-  surfaces[1] = GRSurfaceAdf::Create(intf_fd, &intf_data.current_mode, format, &result);
-  if (!surfaces[1]) {
-    fprintf(stderr, "Failed to allocate surface 1: %s\n", strerror(-result));
-    n_surfaces = 1;
-  } else {
-    n_surfaces = 2;
-  }
-
-done:
-  adf_free_interface_data(&intf_data);
-  return result;
-}
-
-int MinuiBackendAdf::DeviceInit(adf_device* dev) {
-  adf_id_t intf_id;
-  int err = adf_find_simple_post_configuration(dev, &format, 1, &intf_id, &eng_id);
-  if (err < 0) return err;
-
-  err = adf_device_attach(dev, eng_id, intf_id);
-  if (err < 0 && err != -EALREADY) return err;
-
-  intf_fd = adf_interface_open(dev, intf_id, O_RDWR | O_CLOEXEC);
-  if (intf_fd < 0) return intf_fd;
-
-  err = InterfaceInit();
-  if (err < 0) {
-    close(intf_fd);
-    intf_fd = -1;
-  }
-
-  return err;
-}
-
-GRSurface* MinuiBackendAdf::Init() {
-  PixelFormat pixel_format = gr_pixel_format();
-  if (pixel_format == PixelFormat::ABGR) {
-    format = DRM_FORMAT_ABGR8888;
-  } else if (pixel_format == PixelFormat::BGRA) {
-    format = DRM_FORMAT_BGRA8888;
-  } else if (pixel_format == PixelFormat::RGBX) {
-    format = DRM_FORMAT_RGBX8888;
-  } else {
-    format = DRM_FORMAT_RGB565;
-  }
-
-  adf_id_t* dev_ids = nullptr;
-  ssize_t n_dev_ids = adf_devices(&dev_ids);
-  if (n_dev_ids == 0) {
-    return nullptr;
-  } else if (n_dev_ids < 0) {
-    fprintf(stderr, "enumerating adf devices failed: %s\n", strerror(-n_dev_ids));
-    return nullptr;
-  }
-
-  intf_fd = -1;
-
-  for (ssize_t i = 0; i < n_dev_ids && intf_fd < 0; i++) {
-    int err = adf_device_open(dev_ids[i], O_RDWR, &dev);
-    if (err < 0) {
-      fprintf(stderr, "opening adf device %u failed: %s\n", dev_ids[i], strerror(-err));
-      continue;
-    }
-
-    err = DeviceInit(&dev);
-    if (err < 0) {
-      fprintf(stderr, "initializing adf device %u failed: %s\n", dev_ids[i], strerror(-err));
-      adf_device_close(&dev);
-    }
-  }
-
-  free(dev_ids);
-
-  if (intf_fd < 0) return nullptr;
-
-  GRSurface* ret = Flip();
-
-  Blank(true);
-  Blank(false);
-
-  return ret;
-}
-
-void MinuiBackendAdf::Sync(GRSurfaceAdf* surf) {
-  static constexpr unsigned int kWarningTimeout = 3000;
-
-  if (surf == nullptr) return;
-
-  if (surf->fence_fd >= 0) {
-    int err = sync_wait(surf->fence_fd, kWarningTimeout);
-    if (err < 0) {
-      perror("adf sync fence wait error\n");
-    }
-
-    close(surf->fence_fd);
-    surf->fence_fd = -1;
-  }
-}
-
-GRSurface* MinuiBackendAdf::Flip() {
-  const auto& surf = surfaces[current_surface];
-
-  int fence_fd = adf_interface_simple_post(intf_fd, eng_id, surf->width, surf->height, format,
-                                           surf->fd, surf->offset, surf->pitch, -1);
-  if (fence_fd >= 0) surf->fence_fd = fence_fd;
-
-  current_surface = (current_surface + 1) % n_surfaces;
-  Sync(surfaces[current_surface].get());
-  return surfaces[current_surface].get();
-}
-
-void MinuiBackendAdf::Blank(bool blank) {
-  adf_interface_blank(intf_fd, blank ? DRM_MODE_DPMS_OFF : DRM_MODE_DPMS_ON);
-}
-
-MinuiBackendAdf::~MinuiBackendAdf() {
-  adf_device_close(&dev);
-  if (intf_fd >= 0) close(intf_fd);
-}
diff --git a/minui/graphics_adf.h b/minui/graphics_adf.h
deleted file mode 100644
index 79d8d2a..0000000
--- a/minui/graphics_adf.h
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
- * 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.
- */
-
-#pragma once
-
-#include <stddef.h>
-#include <stdint.h>
-#include <sys/types.h>
-
-#include <memory>
-
-#include <adf/adf.h>
-
-#include "graphics.h"
-#include "minui/minui.h"
-
-class GRSurfaceAdf : public GRSurface {
- public:
-  ~GRSurfaceAdf() override;
-
-  static std::unique_ptr<GRSurfaceAdf> Create(int intf_fd, const drm_mode_modeinfo* mode,
-                                              __u32 format, int* err);
-
-  uint8_t* data() override {
-    return mmapped_buffer_;
-  }
-
- private:
-  friend class MinuiBackendAdf;
-
-  GRSurfaceAdf(size_t width, size_t height, size_t row_bytes, size_t pixel_bytes, __u32 offset,
-               __u32 pitch, int fd)
-      : GRSurface(width, height, row_bytes, pixel_bytes), offset(offset), pitch(pitch), fd(fd) {}
-
-  const __u32 offset;
-  const __u32 pitch;
-
-  int fd;
-  int fence_fd{ -1 };
-  uint8_t* mmapped_buffer_{ nullptr };
-};
-
-class MinuiBackendAdf : public MinuiBackend {
- public:
-  MinuiBackendAdf();
-  ~MinuiBackendAdf() override;
-  GRSurface* Init() override;
-  GRSurface* Flip() override;
-  void Blank(bool) override;
-
- private:
-  int InterfaceInit();
-  int DeviceInit(adf_device* dev);
-  void Sync(GRSurfaceAdf* surf);
-
-  int intf_fd;
-  adf_id_t eng_id;
-  __u32 format;
-  adf_device dev;
-  size_t current_surface;
-  size_t n_surfaces;
-  std::unique_ptr<GRSurfaceAdf> surfaces[2];
-};