int
drm_generic_detach(device_t kdev)
{
	struct drm_device *dev;
	int i;

	dev = device_get_softc(kdev);

	drm_put_dev(dev);

	/* Clean up PCI resources allocated by drm_bufs.c.  We're not really
	 * worried about resource consumption while the DRM is inactive (between
	 * lastclose and firstopen or unload) because these aren't actually
	 * taking up KVA, just keeping the PCI resource allocated.
	 */
	for (i = 0; i < DRM_MAX_PCI_RESOURCE; i++) {
		if (dev->pcir[i] == NULL)
			continue;
		bus_release_resource(dev->dev, SYS_RES_MEMORY,
		    dev->pcirid[i], dev->pcir[i]);
		dev->pcir[i] = NULL;
	}

	if (pci_disable_busmaster(dev->dev))
		DRM_ERROR("Request to disable bus-master failed.\n");

	return (0);
}

static void vmw_remove(struct pci_dev *pdev)
{
	struct drm_device *dev = pci_get_drvdata(pdev);

	pci_disable_device(pdev);
	drm_put_dev(dev);
}

static void
i915_pci_remove(struct pci_dev *pdev)
{
	struct drm_device *dev = pci_get_drvdata(pdev);

	drm_put_dev(dev);
}

static int rcar_du_remove(struct platform_device *pdev)
{
	struct rcar_du_device *rcdu = platform_get_drvdata(pdev);

	drm_put_dev(rcdu->ddev);

	return 0;
}

static int fsl_dcu_drm_remove(struct platform_device *pdev)
{
	struct fsl_dcu_drm_device *fsl_dev = platform_get_drvdata(pdev);

	drm_put_dev(fsl_dev->drm);

	return 0;
}

static int xylon_drm_platform_remove(struct platform_device *pdev)
{
	struct xylon_drm_device *xdev = platform_get_drvdata(pdev);

	drm_put_dev(xdev->dev);

	return 0;
}

static void virtio_gpu_remove(struct virtio_device *vdev)
{
	struct drm_device *dev = vdev->priv;

	drm_dev_unregister(dev);
	virtio_gpu_deinit(dev);
	drm_put_dev(dev);
}

static int
PVRSRVDrmRemove(struct platform_device *pDevice)
{
	PVR_TRACE(("PVRSRVDrmRemove"));

	drm_put_dev(gpsPVRDRMDev);

	return 0;
}

void drm_platform_exit(struct drm_driver *driver, struct platform_device *platform_device)
{
	struct drm_device *dev, *tmp;
	DRM_DEBUG("\n");

	list_for_each_entry_safe(dev, tmp, &driver->device_list, driver_item)
		drm_put_dev(dev);
	DRM_INFO("Module unloaded\n");
}

static int pdev_remove(struct platform_device *device)
{
	DBG("");

	omap_disconnect_dssdevs();
	omap_crtc_pre_uninit();

	drm_put_dev(platform_get_drvdata(device));
	return 0;
}

static int fsl_dcu_drm_remove(struct platform_device *pdev)
{
	struct fsl_dcu_drm_device *fsl_dev = platform_get_drvdata(pdev);

	clk_disable_unprepare(fsl_dev->clk);
	clk_disable_unprepare(fsl_dev->pix_clk);
	clk_unregister(fsl_dev->pix_clk);
	drm_put_dev(fsl_dev->drm);

	return 0;
}

void drm_unplug_dev(struct drm_device *dev)
{
	/* for a USB device */
	drm_dev_unregister(dev);

	mutex_lock(&drm_global_mutex);

	drm_device_set_unplugged(dev);

	if (dev->open_count == 0) {
		drm_put_dev(dev);
	}
	mutex_unlock(&drm_global_mutex);
}

static void etnaviv_unbind(struct device *dev)
{
	struct drm_device *drm = dev_get_drvdata(dev);
	struct etnaviv_drm_private *priv = drm->dev_private;

	drm_dev_unregister(drm);

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

	component_unbind_all(dev, drm);

	drm->dev_private = NULL;
	kfree(priv);

	drm_put_dev(drm);
}

/**
 * Called via cleanup_module() at module unload time.
 *
 * Cleans up all DRM device, calling drm_lastclose().
 *
 * \sa drm_init
 */
static void __exit drm_cleanup(drm_device_t * dev)
{

	DRM_DEBUG("\n");
	if (!dev) {
		DRM_ERROR("cleanup called no dev\n");
		return;
	}

	drm_lastclose(dev);

	if (dev->maplist) {
		drm_free(dev->maplist, sizeof(*dev->maplist), DRM_MEM_MAPS);
		dev->maplist = NULL;
	}

	if (!drm_fb_loaded)
		pci_disable_device(dev->pdev);

	drm_ctxbitmap_cleanup(dev);

	if (drm_core_has_MTRR(dev) && drm_core_has_AGP(dev) && dev->agp
	    && dev->agp->agp_mtrr >= 0) {
		int retval;
		retval = mtrr_del(dev->agp->agp_mtrr,
				  dev->agp->agp_info.aper_base,
				  dev->agp->agp_info.aper_size * 1024 * 1024);
		DRM_DEBUG("mtrr_del=%d\n", retval);
	}

	if (drm_core_has_AGP(dev) && dev->agp) {
		drm_free(dev->agp, sizeof(*dev->agp), DRM_MEM_AGPLISTS);
		dev->agp = NULL;
	}
	if (dev->driver->unload)
		dev->driver->unload(dev);

	drm_put_head(&dev->primary);
	if (drm_put_dev(dev))
		DRM_ERROR("Cannot unload module\n");
}

static int armada_drm_remove(struct platform_device *pdev)
{
	drm_put_dev(platform_get_drvdata(pdev));
	return 0;
}

static void virtio_gpu_remove(struct virtio_device *vdev)
{
	struct drm_device *dev = vdev->priv;
	drm_put_dev(dev);
}

static void armada_drm_unbind(struct device *dev)
{
    drm_put_dev(dev_get_drvdata(dev));
}