u32 au1xxx_ddma_add_device(dbdev_tab_t *dev);
extern void au1xxx_ddma_del_device(u32 devid);
void *au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);
u32 au1xxx_ddma_add_device(dbdev_tab_t *dev);
extern void au1xxx_ddma_del_device(u32 devid);
void *au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp);