static void malidp_unbind(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);
	struct malidp_drm *malidp = drm->dev_private;
	struct malidp_hw_device *hwdev = malidp->dev;

	if (malidp->fbdev) {
		drm_fbdev_cma_fini(malidp->fbdev);
		malidp->fbdev = NULL;
	}
	drm_kms_helper_poll_fini(drm);
	malidp_se_irq_fini(drm);
	malidp_de_irq_fini(drm);
	drm_vblank_cleanup(drm);
	component_unbind_all(dev, drm);
	of_node_put(malidp->crtc.port);
	malidp->crtc.port = NULL;
	drm_dev_unregister(drm);
	malidp_de_planes_destroy(drm);
	drm_mode_config_cleanup(drm);
	drm->dev_private = NULL;
	dev_set_drvdata(dev, NULL);
	clk_disable_unprepare(hwdev->mclk);
	clk_disable_unprepare(hwdev->aclk);
	clk_disable_unprepare(hwdev->pclk);
	drm_dev_unref(drm);
	of_reserved_mem_device_release(dev);
}

void sun4i_framebuffer_free(struct drm_device *drm)
{
	struct sun4i_drv *drv = drm->dev_private;

	drm_fbdev_cma_fini(drv->fbdev);
	drm_mode_config_cleanup(drm);
}

int fsl_dcu_drm_modeset_init(struct fsl_dcu_drm_device *fsl_dev)
{
	int ret;

	drm_mode_config_init(fsl_dev->drm);

	fsl_dev->drm->mode_config.min_width = 0;
	fsl_dev->drm->mode_config.min_height = 0;
	fsl_dev->drm->mode_config.max_width = 2031;
	fsl_dev->drm->mode_config.max_height = 2047;
	fsl_dev->drm->mode_config.funcs = &fsl_dcu_drm_mode_config_funcs;

	ret = fsl_dcu_drm_crtc_create(fsl_dev);
	if (ret)
		goto err;

	ret = fsl_dcu_drm_encoder_create(fsl_dev, &fsl_dev->crtc);
	if (ret)
		goto err;

	ret = fsl_dcu_create_outputs(fsl_dev);
	if (ret)
		goto err;

	drm_mode_config_reset(fsl_dev->drm);
	drm_kms_helper_poll_init(fsl_dev->drm);

	return 0;

err:
	drm_mode_config_cleanup(fsl_dev->drm);
	return ret;
}

static int pdev_remove(struct platform_device *pdev)
{
	struct drm_device *ddev = platform_get_drvdata(pdev);
	struct omap_drm_private *priv = ddev->dev_private;

	DBG("");

	drm_dev_unregister(ddev);

	omap_modeset_disable_external_hpd();
	drm_kms_helper_poll_fini(ddev);

	if (priv->fbdev)
		omap_fbdev_free(ddev);

	drm_atomic_helper_shutdown(ddev);

	drm_mode_config_cleanup(ddev);

	omap_drm_irq_uninstall(ddev);
	omap_gem_deinit(ddev);

	drm_dev_unref(ddev);

	destroy_workqueue(priv->wq);
	kfree(priv);

	omap_disconnect_dssdevs();
	omap_crtc_pre_uninit();

	return 0;
}

static void tinydrm_fini(struct tinydrm_device *tdev)
{
	drm_mode_config_cleanup(tdev->drm);
	mutex_destroy(&tdev->dirty_lock);
	tdev->drm->dev_private = NULL;
	drm_dev_unref(tdev->drm);
}

void bochs_kms_fini(struct bochs_device *bochs)
{
	if (bochs->mode_config_initialized) {
		drm_mode_config_cleanup(bochs->dev);
		bochs->mode_config_initialized = false;
	}
}

static int kirin_drm_kms_init(struct drm_device *dev)
{
	struct kirin_drm_private *priv;
	int ret;

	priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
	if (!priv)
		return -ENOMEM;

	dev->dev_private = priv;
	dev_set_drvdata(dev->dev, dev);

	/* dev->mode_config initialization */
	drm_mode_config_init(dev);
	kirin_drm_mode_config_init(dev);

	/* display controller init */
	ret = dc_ops->init(to_platform_device(dev->dev));
	if (ret)
		goto err_mode_config_cleanup;

	/* bind and init sub drivers */
	ret = component_bind_all(dev->dev, dev);
	if (ret) {
		DRM_ERROR("failed to bind all component.\n");
		goto err_dc_cleanup;
	}

	/* vblank init */
	ret = drm_vblank_init(dev, dev->mode_config.num_crtc);
	if (ret) {
		DRM_ERROR("failed to initialize vblank.\n");
		goto err_unbind_all;
	}
	/* with irq_enabled = true, we can use the vblank feature. */
	dev->irq_enabled = true;

	/* reset all the states of crtc/plane/encoder/connector */
	drm_mode_config_reset(dev);

	/* init kms poll for handling hpd */
	drm_kms_helper_poll_init(dev);

	/* force detection after connectors init */
	(void)drm_helper_hpd_irq_event(dev);

	return 0;

err_unbind_all:
	component_unbind_all(dev->dev, dev);
err_dc_cleanup:
	dc_ops->cleanup(to_platform_device(dev->dev));
err_mode_config_cleanup:
	drm_mode_config_cleanup(dev);
	devm_kfree(dev->dev, priv);
	dev->dev_private = NULL;

	return ret;
}

int mgag200_driver_load(struct drm_device *dev, unsigned long flags)
{
	struct mga_device *mdev;
	int r;

	mdev = devm_kzalloc(dev->dev, sizeof(struct mga_device), GFP_KERNEL);
	if (mdev == NULL)
		return -ENOMEM;
	dev->dev_private = (void *)mdev;
	mdev->dev = dev;

	r = mgag200_device_init(dev, flags);
	if (r) {
		dev_err(&dev->pdev->dev, "Fatal error during GPU init: %d\n", r);
		return r;
	}
	r = mgag200_mm_init(mdev);
	if (r)
		goto err_mm;

	drm_mode_config_init(dev);
	dev->mode_config.funcs = (void *)&mga_mode_funcs;
	if (IS_G200_SE(mdev) && mdev->mc.vram_size < (2048*1024))
		dev->mode_config.preferred_depth = 16;
	else
		dev->mode_config.preferred_depth = 24;
	dev->mode_config.prefer_shadow = 1;

	r = mgag200_modeset_init(mdev);
	if (r) {
		dev_err(&dev->pdev->dev, "Fatal error during modeset init: %d\n", r);
		goto err_modeset;
	}

	/* Make small buffers to store a hardware cursor (double buffered icon updates) */
	mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0,
					  &mdev->cursor.pixels_1);
	mgag200_bo_create(dev, roundup(48*64, PAGE_SIZE), 0, 0,
					  &mdev->cursor.pixels_2);
	if (!mdev->cursor.pixels_2 || !mdev->cursor.pixels_1) {
		mdev->cursor.pixels_1 = NULL;
		mdev->cursor.pixels_2 = NULL;
		dev_warn(&dev->pdev->dev,
			"Could not allocate space for cursors. Not doing hardware cursors.\n");
	} else {
		mdev->cursor.pixels_current = mdev->cursor.pixels_1;
		mdev->cursor.pixels_prev = mdev->cursor.pixels_2;
	}

	return 0;

err_modeset:
	drm_mode_config_cleanup(dev);
	mgag200_mm_fini(mdev);
err_mm:
	dev->dev_private = NULL;

	return r;
}

static void drv_unload(struct drm_device *ddev)
{
	DRM_DEBUG("%s\n", __func__);

	drm_kms_helper_poll_fini(ddev);
	ltdc_unload(ddev);
	drm_mode_config_cleanup(ddev);
}

static int pl111_modeset_init(struct drm_device *dev)
{
	struct drm_mode_config *mode_config;
	struct pl111_drm_dev_private *priv = dev->dev_private;
	int ret = 0;

	drm_mode_config_init(dev);
	mode_config = &dev->mode_config;
	mode_config->funcs = &mode_config_funcs;
	mode_config->min_width = 1;
	mode_config->max_width = 1024;
	mode_config->min_height = 1;
	mode_config->max_height = 768;

	ret = pl111_connector_init(dev);
	if (ret) {
		dev_err(dev->dev, "Failed to create pl111_drm_connector\n");
		goto out_config;
	}

	/* Don't actually attach if we didn't find a drm_panel
	 * attached to us.  This will allow a kernel to include both
	 * the fbdev pl111 driver and this one, and choose between
	 * them based on which subsystem has support for the panel.
	 */
	if (!priv->connector.panel) {
		dev_info(dev->dev,
			 "Disabling due to lack of DRM panel device.\n");
		ret = -ENODEV;
		goto out_config;
	}

	ret = pl111_display_init(dev);
	if (ret != 0) {
		dev_err(dev->dev, "Failed to init display\n");
		goto out_config;
	}

	ret = drm_vblank_init(dev, 1);
	if (ret != 0) {
		dev_err(dev->dev, "Failed to init vblank\n");
		goto out_config;
	}

	drm_mode_config_reset(dev);

	priv->fbdev = drm_fbdev_cma_init(dev, 32,
					 dev->mode_config.num_connector);

	drm_kms_helper_poll_init(dev);

	goto finish;

out_config:
	drm_mode_config_cleanup(dev);
finish:
	return ret;
}

void virtio_gpu_modeset_fini(struct virtio_gpu_device *vgdev)
{
	int i;

	for (i = 0 ; i < vgdev->num_scanouts; ++i)
		kfree(vgdev->outputs[i].edid);
	drm_atomic_helper_shutdown(vgdev->ddev);
	drm_mode_config_cleanup(vgdev->ddev);
}

void cirrus_modeset_fini(struct cirrus_device *cdev)
{
	cirrus_fbdev_fini(cdev);

	if (cdev->mode_info.mode_config_initialized) {
		drm_mode_config_cleanup(cdev->dev);
		cdev->mode_info.mode_config_initialized = false;
	}
}

static int fsl_dcu_unload(struct drm_device *dev)
{
	drm_mode_config_cleanup(dev);
	drm_vblank_cleanup(dev);
	drm_irq_uninstall(dev);

	dev->dev_private = NULL;

	return 0;
}

void qxl_modeset_fini(struct qxl_device *qdev)
{
	qxl_fbdev_fini(qdev);

	qxl_destroy_monitors_object(qdev);
	if (qdev->mode_info.mode_config_initialized) {
		drm_mode_config_cleanup(qdev->ddev);
		qdev->mode_info.mode_config_initialized = false;
	}
}

static int shmob_drm_unload(struct drm_device *dev)
{
	drm_kms_helper_poll_fini(dev);
	drm_mode_config_cleanup(dev);
	drm_vblank_cleanup(dev);
	drm_irq_uninstall(dev);

	dev->dev_private = NULL;

	return 0;
}

static void sun4i_drv_unbind(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);

	drm_dev_unregister(drm);
	drm_kms_helper_poll_fini(drm);
	sun4i_framebuffer_free(drm);
	drm_mode_config_cleanup(drm);
	of_reserved_mem_device_release(dev);
	drm_dev_put(drm);
}

static int dce_virtual_sw_fini(void *handle)
{
	struct amdgpu_device *adev = (struct amdgpu_device *)handle;

	kfree(adev->mode_info.bios_hardcoded_edid);

	drm_kms_helper_poll_fini(adev->ddev);

	drm_mode_config_cleanup(adev->ddev);
	adev->mode_info.mode_config_initialized = false;
	return 0;
}

void komeda_kms_detach(struct komeda_kms_dev *kms)
{
	struct drm_device *drm = &kms->base;
	struct komeda_dev *mdev = drm->dev_private;

	drm_dev_unregister(drm);
	component_unbind_all(mdev->dev, drm);
	komeda_kms_cleanup_private_objs(mdev);
	drm_mode_config_cleanup(drm);
	drm->dev_private = NULL;
	drm_dev_put(drm);
}

struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
{
	struct komeda_kms_dev *kms = kzalloc(sizeof(*kms), GFP_KERNEL);
	struct drm_device *drm;
	int err;

	if (!kms)
		return ERR_PTR(-ENOMEM);

	drm = &kms->base;
	err = drm_dev_init(drm, &komeda_kms_driver, mdev->dev);
	if (err)
		goto free_kms;

	drm->dev_private = mdev;

	komeda_kms_mode_config_init(kms, mdev);

	err = komeda_kms_add_private_objs(kms, mdev);
	if (err)
		goto cleanup_mode_config;

	err = komeda_kms_add_planes(kms, mdev);
	if (err)
		goto cleanup_mode_config;

	err = drm_vblank_init(drm, kms->n_crtcs);
	if (err)
		goto cleanup_mode_config;

	err = komeda_kms_add_crtcs(kms, mdev);
	if (err)
		goto cleanup_mode_config;

	err = component_bind_all(mdev->dev, kms);
	if (err)
		goto cleanup_mode_config;

	drm_mode_config_reset(drm);

	err = drm_dev_register(drm, 0);
	if (err)
		goto cleanup_mode_config;

	return kms;

cleanup_mode_config:
	drm_mode_config_cleanup(drm);
free_kms:
	kfree(kms);
	return ERR_PTR(err);
}

static int pl111_amba_remove(struct amba_device *amba_dev)
{
	struct drm_device *drm = amba_get_drvdata(amba_dev);
	struct pl111_drm_dev_private *priv = drm->dev_private;

	drm_dev_unregister(drm);
	if (priv->fbdev)
		drm_fbdev_cma_fini(priv->fbdev);
	drm_mode_config_cleanup(drm);
	drm_dev_unref(drm);

	return 0;
}