drm/qxl: use generic fbdev emulation

Switch qxl over to the new generic fbdev emulation.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Noralf Trønnes <noralf@tronnes.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20190118122020.27596-18-kraxel@redhat.com

drivers/gpu/drm/qxl/qxl_display.c

@@ -1225,18 +1225,11 @@ int qxl_modeset_init(struct qxl_device *qdev)
 	qxl_display_read_client_monitors_config(qdev);
 
 	drm_mode_config_reset(&qdev->ddev);
-
-	/* primary surface must be created by this point, to allow
-	 * issuing command queue commands and having them read by
-	 * spice server. */
-	qxl_fbdev_init(qdev);
 	return 0;
 }
 
 void qxl_modeset_fini(struct qxl_device *qdev)
 {
-	qxl_fbdev_fini(qdev);
-
 	qxl_destroy_monitors_object(qdev);
 	drm_mode_config_cleanup(&qdev->ddev);
 }

drivers/gpu/drm/qxl/qxl_drv.c

@@ -94,6 +94,8 @@ qxl_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
 	if (ret)
 		goto modeset_cleanup;
 
+	drm_fb_helper_remove_conflicting_pci_framebuffers(pdev, 0, "qxl");
+	drm_fbdev_generic_setup(&qdev->ddev, 32);
 	return 0;
 
 modeset_cleanup: