diff --git a/Android.mk b/Android.mk
index 5d16c2f..109e352 100644
--- a/Android.mk
+++ b/Android.mk
@@ -71,7 +71,6 @@
 	hwcutils.cpp \
 	platform.cpp \
 	platformdrmgeneric.cpp \
-	platformnv.cpp \
 	separate_rects.cpp \
 	virtualcompositorworker.cpp \
 	vsyncworker.cpp
@@ -80,11 +79,7 @@
 	-DHWC2_USE_CPP11 \
 	-DHWC2_INCLUDE_STRINGIFICATION
 
-ifeq ($(strip $(BOARD_DRM_HWCOMPOSER_BUFFER_IMPORTER)),nvidia-gralloc)
-LOCAL_CPPFLAGS += -DUSE_NVIDIA_IMPORTER
-else
 LOCAL_CPPFLAGS += -DUSE_DRM_GENERIC_IMPORTER
-endif
 
 LOCAL_MODULE := hwcomposer.drm
 LOCAL_MODULE_TAGS := optional
diff --git a/drmhwcgralloc.h b/drmhwcgralloc.h
index c4a42ea..759746a 100644
--- a/drmhwcgralloc.h
+++ b/drmhwcgralloc.h
@@ -19,39 +19,6 @@
 
 #include <stdint.h>
 
-enum {
-  /* perform(const struct gralloc_module_t *mod,
-   *	   int op,
-   *	   int drm_fd,
-   *	   buffer_handle_t buffer,
-   *	   struct hwc_drm_bo *bo);
-   */
-  GRALLOC_MODULE_PERFORM_DRM_IMPORT = 0xffeeff00,
-
-  /* perform(const struct gralloc_module_t *mod,
-   *	   int op,
-   *	   buffer_handle_t buffer,
-   *	   void (*free_callback)(void *),
-   *	   void *priv);
-   */
-  GRALLOC_MODULE_PERFORM_SET_IMPORTER_PRIVATE = 0xffeeff01,
-
-  /* perform(const struct gralloc_module_t *mod,
-   *	   int op,
-   *	   buffer_handle_t buffer,
-   *	   void (*free_callback)(void *),
-   *	   void **priv);
-   */
-  GRALLOC_MODULE_PERFORM_GET_IMPORTER_PRIVATE = 0xffeeff02,
-
-  /* perform(const struct gralloc_module_t *mod,
-   *     int op,
-   *     buffer_handle_t buffer,
-   *     int *usage);
-   */
-  GRALLOC_MODULE_PERFORM_GET_USAGE = 0xffeeff03,
-};
-
 typedef struct hwc_drm_bo {
   uint32_t width;
   uint32_t height;
diff --git a/platformnv.cpp b/platformnv.cpp
deleted file mode 100644
index e7b6be3..0000000
--- a/platformnv.cpp
+++ /dev/null
@@ -1,374 +0,0 @@
-/*
- * Copyright (C) 2015 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.
- */
-
-#define LOG_TAG "hwc-platform-nv"
-
-#include "drmresources.h"
-#include "platform.h"
-#include "platformnv.h"
-
-#include <cinttypes>
-#include <stdatomic.h>
-#include <drm/drm_fourcc.h>
-#include <xf86drm.h>
-#include <xf86drmMode.h>
-
-#include <cutils/log.h>
-#include <hardware/gralloc.h>
-
-#ifndef EGL_NATIVE_HANDLE_ANDROID_NVX
-#define EGL_NATIVE_HANDLE_ANDROID_NVX 0x322A
-#endif
-
-namespace android {
-
-#ifdef USE_NVIDIA_IMPORTER
-// static
-Importer *Importer::CreateInstance(DrmResources *drm) {
-  NvImporter *importer = new NvImporter(drm);
-  if (!importer)
-    return NULL;
-
-  int ret = importer->Init();
-  if (ret) {
-    ALOGE("Failed to initialize the nv importer %d", ret);
-    delete importer;
-    return NULL;
-  }
-  return importer;
-}
-#endif
-
-NvImporter::NvImporter(DrmResources *drm) : drm_(drm) {
-}
-
-NvImporter::~NvImporter() {
-}
-
-int NvImporter::Init() {
-  int ret = hw_get_module(GRALLOC_HARDWARE_MODULE_ID,
-                          (const hw_module_t **)&gralloc_);
-  if (ret) {
-    ALOGE("Failed to open gralloc module %d", ret);
-    return ret;
-  }
-
-  if (strcasecmp(gralloc_->common.author, "NVIDIA"))
-    ALOGW("Using non-NVIDIA gralloc module: %s/%s\n", gralloc_->common.name,
-          gralloc_->common.author);
-
-  return 0;
-}
-
-
-EGLImageKHR NvImporter::ImportImage(EGLDisplay egl_display, buffer_handle_t handle) {
-  return eglCreateImageKHR(
-      egl_display, EGL_NO_CONTEXT, EGL_NATIVE_HANDLE_ANDROID_NVX,
-      (EGLClientBuffer)handle, NULL /* no attribs */);
-}
-
-int NvImporter::ImportBuffer(buffer_handle_t handle, hwc_drm_bo_t *bo) {
-  memset(bo, 0, sizeof(hwc_drm_bo_t));
-  NvBuffer_t *buf = GrallocGetNvBuffer(handle);
-  if (buf) {
-    atomic_fetch_add(&buf->ref, 1);
-    *bo = buf->bo;
-    return 0;
-  }
-
-  buf = new NvBuffer_t();
-  if (!buf) {
-    ALOGE("Failed to allocate new NvBuffer_t");
-    return -ENOMEM;
-  }
-  buf->bo.priv = buf;
-  buf->importer = this;
-
-  // We initialize the reference count to 2 since NvGralloc is still using this
-  // buffer (will be cleared in the NvGrallocRelease), and the other
-  // reference is for HWC (this ImportBuffer call).
-  atomic_init(&buf->ref, 2);
-
-  int ret = gralloc_->perform(gralloc_, GRALLOC_MODULE_PERFORM_DRM_IMPORT,
-                              drm_->fd(), handle, &buf->bo);
-  if (ret) {
-    ALOGE("GRALLOC_MODULE_PERFORM_DRM_IMPORT failed %d", ret);
-    delete buf;
-    return ret;
-  }
-
-  ret = drmModeAddFB2(drm_->fd(), buf->bo.width, buf->bo.height, buf->bo.format,
-                      buf->bo.gem_handles, buf->bo.pitches, buf->bo.offsets,
-                      &buf->bo.fb_id, 0);
-  if (ret) {
-    ALOGE("Failed to add fb %d", ret);
-    ReleaseBufferImpl(&buf->bo);
-    delete buf;
-    return ret;
-  }
-
-  ret = GrallocSetNvBuffer(handle, buf);
-  if (ret) {
-    /* This will happen is persist.tegra.gpu_mapping_cache is 0/off,
-     * or if NV gralloc runs out of "priv slots" (currently 3 per buffer,
-     * only one of which should be used by drm_hwcomposer). */
-    ALOGE("Failed to register free callback for imported buffer %d", ret);
-    ReleaseBufferImpl(&buf->bo);
-    delete buf;
-    return ret;
-  }
-  *bo = buf->bo;
-  return 0;
-}
-
-int NvImporter::ReleaseBuffer(hwc_drm_bo_t *bo) {
-  NvBuffer_t *buf = (NvBuffer_t *)bo->priv;
-  if (!buf) {
-    ALOGE("Freeing bo %" PRIu32 ", buf is NULL!", bo->fb_id);
-    return 0;
-  }
-  if (atomic_fetch_sub(&buf->ref, 1) > 1)
-    return 0;
-
-  ReleaseBufferImpl(bo);
-  delete buf;
-  return 0;
-}
-
-// static
-void NvImporter::NvGrallocRelease(void *nv_buffer) {
-  NvBuffer_t *buf = (NvBuffer *)nv_buffer;
-  buf->importer->ReleaseBuffer(&buf->bo);
-}
-
-void NvImporter::ReleaseBufferImpl(hwc_drm_bo_t *bo) {
-  if (bo->fb_id) {
-    int ret = drmModeRmFB(drm_->fd(), bo->fb_id);
-    if (ret)
-      ALOGE("Failed to rm fb %d", ret);
-  }
-
-  struct drm_gem_close gem_close;
-  memset(&gem_close, 0, sizeof(gem_close));
-  int num_gem_handles = sizeof(bo->gem_handles) / sizeof(bo->gem_handles[0]);
-  for (int i = 0; i < num_gem_handles; i++) {
-    if (!bo->gem_handles[i])
-      continue;
-
-    gem_close.handle = bo->gem_handles[i];
-    int ret = drmIoctl(drm_->fd(), DRM_IOCTL_GEM_CLOSE, &gem_close);
-    if (ret) {
-      ALOGE("Failed to close gem handle %d %d", i, ret);
-    } else {
-      /* Clear any duplicate gem handle as well but don't close again */
-      for (int j = i + 1; j < num_gem_handles; j++)
-        if (bo->gem_handles[j] == bo->gem_handles[i])
-          bo->gem_handles[j] = 0;
-      bo->gem_handles[i] = 0;
-    }
-  }
-}
-
-NvImporter::NvBuffer_t *NvImporter::GrallocGetNvBuffer(buffer_handle_t handle) {
-  void *priv = NULL;
-  int ret =
-      gralloc_->perform(gralloc_, GRALLOC_MODULE_PERFORM_GET_IMPORTER_PRIVATE,
-                        handle, NvGrallocRelease, &priv);
-  return ret ? NULL : (NvBuffer_t *)priv;
-}
-
-int NvImporter::GrallocSetNvBuffer(buffer_handle_t handle, NvBuffer_t *buf) {
-  return gralloc_->perform(gralloc_,
-                           GRALLOC_MODULE_PERFORM_SET_IMPORTER_PRIVATE, handle,
-                           NvGrallocRelease, buf);
-}
-
-#ifdef USE_NVIDIA_IMPORTER
-// static
-std::unique_ptr<Planner> Planner::CreateInstance(DrmResources *) {
-  std::unique_ptr<Planner> planner(new Planner);
-  planner->AddStage<PlanStageNvLimits>();
-  planner->AddStage<PlanStageProtectedRotated>();
-  planner->AddStage<PlanStageProtected>();
-  planner->AddStage<PlanStagePrecomp>();
-  planner->AddStage<PlanStageGreedy>();
-  return planner;
-}
-#endif
-
-static DrmPlane *GetCrtcPrimaryPlane(DrmCrtc *crtc,
-                                     std::vector<DrmPlane *> *planes) {
-  for (auto i = planes->begin(); i != planes->end(); ++i) {
-    if ((*i)->GetCrtcSupported(*crtc)) {
-      DrmPlane *plane = *i;
-      planes->erase(i);
-      return plane;
-    }
-  }
-  return NULL;
-}
-
-int PlanStageProtectedRotated::ProvisionPlanes(
-    std::vector<DrmCompositionPlane> *composition,
-    std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
-    std::vector<DrmPlane *> *planes) {
-  int ret;
-  int protected_zorder = -1;
-  for (auto i = layers.begin(); i != layers.end();) {
-    if (!i->second->protected_usage() || !i->second->transform) {
-      ++i;
-      continue;
-    }
-
-    auto primary_iter = planes->begin();
-    for (; primary_iter != planes->end(); ++primary_iter) {
-      if ((*primary_iter)->type() == DRM_PLANE_TYPE_PRIMARY)
-        break;
-    }
-
-    // We cheat a little here. Since there can only be one primary plane per
-    // crtc, we know we'll only hit this case once. So we blindly insert the
-    // protected content at the beginning of the composition, knowing this path
-    // won't be taken a second time during the loop.
-    if (primary_iter != planes->end()) {
-      composition->emplace(composition->begin(),
-                           DrmCompositionPlane::Type::kLayer, *primary_iter,
-                           crtc, i->first);
-      planes->erase(primary_iter);
-      protected_zorder = i->first;
-    } else {
-      ALOGE("Could not provision primary plane for protected/rotated layer");
-    }
-    i = layers.erase(i);
-  }
-
-  if (protected_zorder == -1)
-    return 0;
-
-  // Add any layers below the protected content to the precomposition since we
-  // need to punch a hole through them.
-  for (auto i = layers.begin(); i != layers.end();) {
-    // Skip layers above the z-order of the protected content
-    if (i->first > static_cast<size_t>(protected_zorder)) {
-      ++i;
-      continue;
-    }
-
-    // If there's no precomp layer already queued, queue one now.
-    DrmCompositionPlane *precomp = GetPrecomp(composition);
-    if (precomp) {
-      precomp->source_layers().emplace_back(i->first);
-    } else {
-      if (planes->size()) {
-        DrmPlane *precomp_plane = planes->back();
-        planes->pop_back();
-        composition->emplace_back(DrmCompositionPlane::Type::kPrecomp,
-                                  precomp_plane, crtc, i->first);
-      } else {
-        ALOGE("Not enough planes to reserve for precomp fb");
-      }
-    }
-    i = layers.erase(i);
-  }
-  return 0;
-}
-
-bool PlanStageNvLimits::CheckLayer(size_t zorder, DrmHwcLayer *layer) {
-    auto src_w = layer->source_crop.width();
-    auto src_h = layer->source_crop.height();
-    auto dst_w = layer->display_frame.width();
-    auto dst_h = layer->display_frame.height();
-    int h_limit = 4;
-    int v_limit;
-
-    switch (layer->buffer->format) {
-      case DRM_FORMAT_ARGB8888:
-      case DRM_FORMAT_ABGR8888:
-      case DRM_FORMAT_XBGR8888:
-      case DRM_FORMAT_XRGB8888:
-        // tegra driver assumes any layer with alpha channel has premult
-        // blending, avoid handling it this is not the case. This is not an
-        // issue for bottom-most layer since there's nothing to blend with
-        if (zorder > 0 && layer->blending != DrmHwcBlending::kPreMult)
-          return false;
-
-        v_limit = 2;
-        break;
-      case DRM_FORMAT_YVU420:
-      case DRM_FORMAT_YUV420:
-      case DRM_FORMAT_YUV422:
-      case DRM_FORMAT_UYVY:
-      case DRM_FORMAT_YUYV:
-      case DRM_FORMAT_NV12:
-      case DRM_FORMAT_NV21:
-      case DRM_FORMAT_RGB565:
-      case DRM_FORMAT_BGR565:
-        v_limit = 4;
-        break;
-      default:
-        v_limit = 2;
-        break;
-    }
-
-    if (layer->transform &
-        (DrmHwcTransform::kRotate90 | DrmHwcTransform::kRotate270))
-      std::swap(dst_w, dst_h);
-
-    // check for max supported down scaling
-    if (((src_w / dst_w) > h_limit) || ((src_h / dst_h) > v_limit))
-      return false;
-
-    return true;
-}
-
-int PlanStageNvLimits::ProvisionPlanes(
-    std::vector<DrmCompositionPlane> *composition,
-    std::map<size_t, DrmHwcLayer *> &layers, DrmCrtc *crtc,
-    std::vector<DrmPlane *> *planes) {
-  int ret;
-
-  for (auto i = layers.begin(); i != layers.end();) {
-    // Skip layer if supported
-    if (CheckLayer(i->first, i->second)) {
-      i++;
-      continue;
-    }
-
-    if (i->second->protected_usage()) {
-      // Drop the layer if unsupported and protected, this will just display
-      // black in the area of this layer but it's better than failing miserably
-      i = layers.erase(i);
-      continue;
-    }
-
-    // If there's no precomp layer already queued, queue one now.
-    DrmCompositionPlane *precomp = GetPrecomp(composition);
-    if (precomp) {
-      precomp->source_layers().emplace_back(i->first);
-    } else if (!planes->empty()) {
-      DrmPlane *precomp_plane = planes->back();
-      planes->pop_back();
-      composition->emplace_back(DrmCompositionPlane::Type::kPrecomp,
-                                precomp_plane, crtc, i->first);
-    } else {
-      ALOGE("Not enough planes to reserve for precomp fb");
-    }
-    i = layers.erase(i);
-  }
-
-  return 0;
-}
-}