drm/rockchip/rockchip_drm_drv.c

55 	struct rockchip_drm_private *private = drm_dev->dev_private;
58 	if (!private->domain)
70 	ret = iommu_attach_device(private->domain, dev);
82 	struct rockchip_drm_private *private = drm_dev->dev_private;
84 	if (!private->domain)
87 	iommu_detach_device(private->domain, dev);
93 	struct rockchip_drm_private *private = drm_dev->dev_private;
96 		private->iommu_dev = ERR_PTR(-ENODEV);
97 	else if (!private->iommu_dev)
98 		private->iommu_dev = dev;
103 	struct rockchip_drm_private *private = drm_dev->dev_private;
108 	if (IS_ERR_OR_NULL(private->iommu_dev))
111 	private->domain = iommu_paging_domain_alloc(private->iommu_dev);
112 	if (IS_ERR(private->domain)) {
113 		ret = PTR_ERR(private->domain);
114 		private->domain = NULL;
118 	geometry = &private->domain->geometry;
124 	drm_mm_init(&private->mm, start, end - start + 1);
125 	mutex_init(&private->mm_lock);
132 	struct rockchip_drm_private *private = drm_dev->dev_private;
134 	if (!private->domain)
137 	drm_mm_takedown(&private->mm);
138 	iommu_domain_free(private->domain);
144 	struct rockchip_drm_private *private;
162 	private = devm_kzalloc(drm_dev->dev, sizeof(*private), GFP_KERNEL);
163 	if (!private) {
168 	drm_dev->dev_private = private;