# HwBinder IPC from client to server, and callbacks binder_call(mtk_hal_md_dbfilter_client, mtk_hal_md_dbfilter_server) binder_call(mtk_hal_md_dbfilter_server, mtk_hal_md_dbfilter_client) add_hwservice(mtk_hal_md_dbfilter_server, mtk_hal_md_dbfilter_hwservice) allow mtk_hal_md_dbfilter_client mtk_hal_md_dbfilter_hwservice:hwservice_manager find;