diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
index 138beb550a58..38d47559f098 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
@@ -34,6 +34,7 @@
 #include <linux/pm_runtime.h>
 #include <drm/drm_crtc_helper.h>
 #include <drm/drm_edid.h>
+#include <drm/drm_fb_helper.h>
 
 static void amdgpu_flip_callback(struct dma_fence *f, struct dma_fence_cb *cb)
 {
@@ -556,15 +557,9 @@ amdgpu_user_framebuffer_create(struct drm_device *dev,
 	return &amdgpu_fb->base;
 }
 
-void amdgpu_output_poll_changed(struct drm_device *dev)
-{
-	struct amdgpu_device *adev = dev->dev_private;
-	amdgpu_fb_output_poll_changed(adev);
-}
-
 const struct drm_mode_config_funcs amdgpu_mode_funcs = {
 	.fb_create = amdgpu_user_framebuffer_create,
-	.output_poll_changed = amdgpu_output_poll_changed
+	.output_poll_changed = drm_fb_helper_output_poll_changed,
 };
 
 static const struct drm_prop_enum_list amdgpu_underscan_enum_list[] =
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
index 11ae4ab23768..0bcb6c6e0ca9 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.h
@@ -27,6 +27,5 @@ struct drm_framebuffer *
 amdgpu_user_framebuffer_create(struct drm_device *dev,
 			       struct drm_file *file_priv,
 			       const struct drm_mode_fb_cmd2 *mode_cmd);
-void amdgpu_output_poll_changed(struct drm_device *dev);
 
 #endif
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
index 90fa8e8bc6fb..ff3e9beb7d19 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fb.c
@@ -283,12 +283,6 @@ static int amdgpufb_create(struct drm_fb_helper *helper,
 	return ret;
 }
 
-void amdgpu_fb_output_poll_changed(struct amdgpu_device *adev)
-{
-	if (adev->mode_info.rfbdev)
-		drm_fb_helper_hotplug_event(&adev->mode_info.rfbdev->helper);
-}
-
 static int amdgpu_fbdev_destroy(struct drm_device *dev, struct amdgpu_fbdev *rfbdev)
 {
 	struct amdgpu_framebuffer *rfb = &rfbdev->rfb;
@@ -393,24 +387,3 @@ bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device *adev, struct amdgpu_bo *robj)
 		return true;
 	return false;
 }
-
-void amdgpu_fbdev_restore_mode(struct amdgpu_device *adev)
-{
-	struct amdgpu_fbdev *afbdev;
-	struct drm_fb_helper *fb_helper;
-	int ret;
-
-	if (!adev)
-		return;
-
-	afbdev = adev->mode_info.rfbdev;
-
-	if (!afbdev)
-		return;
-
-	fb_helper = &afbdev->helper;
-
-	ret = drm_fb_helper_restore_fbdev_mode_unlocked(fb_helper);
-	if (ret)
-		DRM_DEBUG("failed to restore crtc mode\n");
-}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 3222e1d4636c..bd6e9a40f421 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -788,9 +788,7 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
  */
 void amdgpu_driver_lastclose_kms(struct drm_device *dev)
 {
-	struct amdgpu_device *adev = dev->dev_private;
-
-	amdgpu_fbdev_restore_mode(adev);
+	drm_fb_helper_lastclose(dev);
 	vga_switcheroo_process_delayed_switch();
 }
 
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 126b8b068b7a..54f06c959340 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -658,10 +658,6 @@ void amdgpu_fbdev_fini(struct amdgpu_device *adev);
 void amdgpu_fbdev_set_suspend(struct amdgpu_device *adev, int state);
 int amdgpu_fbdev_total_size(struct amdgpu_device *adev);
 bool amdgpu_fbdev_robj_is_fb(struct amdgpu_device *adev, struct amdgpu_bo *robj);
-void amdgpu_fbdev_restore_mode(struct amdgpu_device *adev);
-
-void amdgpu_fb_output_poll_changed(struct amdgpu_device *adev);
-
 
 int amdgpu_align_pitch(struct amdgpu_device *adev, int width, int bpp, bool tiled);