vb2_plane_cookie
EXPORT_SYMBOL_GPL(vb2_plane_cookie);
paddr = vb2_plane_cookie(vb, 0);
void *vb2_plane_cookie(struct vb2_buffer *vb, unsigned int plane_no);
dma_addr_t *addr = vb2_plane_cookie(vb, plane_no);
return (struct sg_table *)vb2_plane_cookie(vb, plane_no);