35  * drm_iommu_attach_device- attach device to iommu mapping
41  * mapping.
58 		 * Keep the original DMA mapping of the sub-device and  in drm_iommu_attach_device()
67 		ret = arm_iommu_attach_device(subdrv_dev, priv->mapping);  in drm_iommu_attach_device()
69 		ret = iommu_attach_device(priv->mapping, subdrv_dev);  in drm_iommu_attach_device()
76  * drm_iommu_detach_device -detach device address space mapping from device
82  * mapping
93 		iommu_detach_device(priv->mapping, subdrv_dev);  in drm_iommu_detach_device()
103 		DRM_INFO("Exynos DRM: using %s device for DMA mapping operations\n",  in exynos_drm_register_dma()
110 	if (!priv->mapping) {  in exynos_drm_register_dma()
111 		void *mapping;  in exynos_drm_register_dma()  local
114 			mapping = arm_iommu_create_mapping(&platform_bus_type,  in exynos_drm_register_dma()
117 			mapping = iommu_get_domain_for_dev(priv->dma_dev);  in exynos_drm_register_dma()
119 		if (IS_ERR(mapping))  in exynos_drm_register_dma()
120 			return PTR_ERR(mapping);  in exynos_drm_register_dma()
121 		priv->mapping = mapping;  in exynos_drm_register_dma()
141 	arm_iommu_release_mapping(priv->mapping);  in exynos_drm_cleanup_dma()
142 	priv->mapping = NULL;  in exynos_drm_cleanup_dma()