to_drm
#define to_accel_kdev(qddev) (to_drm(qddev)->accel->kdev) /* Return Linux device of accel node */
debugfs_root = to_drm(qddev)->debugfs_root;
struct drm_device *drm = to_drm(qddev);
struct drm_device *drm = to_drm(qddev);
drm = to_drm(qddev);
drmm_kfree(to_drm(qddev), dbc_attrs);
struct drm_device *drm = to_drm(qddev);