to_mtk_uart_apdma_dev
to_mtk_uart_apdma_dev(c->vc.chan.device);
to_mtk_uart_apdma_dev(c->vc.chan.device);
struct mtk_uart_apdmadev *mtkd = to_mtk_uart_apdma_dev(chan->device);
struct mtk_uart_apdmadev *mtkd = to_mtk_uart_apdma_dev(chan->device);