130 	struct sprd_uart_dma rx_dma;  member
184 	if (sp->rx_dma.enable)  in sprd_stop_rx()
185 		dmaengine_terminate_all(sp->rx_dma.chn);  in sprd_stop_rx()
361 	sp->rx_dma.virt = dma_alloc_coherent(sp->port.dev, SPRD_UART_RX_SIZE,  in sprd_rx_alloc_buf()
362 					     &sp->rx_dma.phys_addr, GFP_KERNEL);  in sprd_rx_alloc_buf()
363 	if (!sp->rx_dma.virt)  in sprd_rx_alloc_buf()
371 	if (sp->rx_dma.virt)  in sprd_rx_free_buf()
373 				  sp->rx_dma.virt, sp->rx_dma.phys_addr);  in sprd_rx_free_buf()
388 	return dmaengine_slave_config(sp->rx_dma.chn, &cfg);  in sprd_rx_dma_config()
397 	port->icount.rx += sp->rx_dma.trans_len;  in sprd_uart_dma_rx()
398 	tty_insert_flip_string(tty, sp->rx_buf_tail, sp->rx_dma.trans_len);  in sprd_uart_dma_rx()
409 	status = dmaengine_tx_status(sp->rx_dma.chn,  in sprd_uart_dma_irq()
410 				     sp->rx_dma.cookie, &state);  in sprd_uart_dma_irq()
414 	if (!state.residue && sp->pos == sp->rx_dma.phys_addr)  in sprd_uart_dma_irq()
418 		sp->rx_dma.trans_len = SPRD_UART_RX_SIZE +  in sprd_uart_dma_irq()
419 			sp->rx_dma.phys_addr - sp->pos;  in sprd_uart_dma_irq()
420 		sp->pos = sp->rx_dma.phys_addr;  in sprd_uart_dma_irq()
422 		sp->rx_dma.trans_len = state.residue - sp->pos;  in sprd_uart_dma_irq()
427 	sp->rx_buf_tail += sp->rx_dma.trans_len;  in sprd_uart_dma_irq()
441 	status = dmaengine_tx_status(sp->rx_dma.chn,  in sprd_complete_rx_dma()
442 				     sp->rx_dma.cookie, &state);  in sprd_complete_rx_dma()
449 	if (sp->pos != sp->rx_dma.phys_addr) {  in sprd_complete_rx_dma()
450 		sp->rx_dma.trans_len =  SPRD_UART_RX_SIZE +  in sprd_complete_rx_dma()
451 			sp->rx_dma.phys_addr - sp->pos;  in sprd_complete_rx_dma()
453 		sp->rx_buf_tail += sp->rx_dma.trans_len;  in sprd_complete_rx_dma()
468 	if (!sp->rx_dma.enable)  in sprd_start_dma_rx()
471 	sp->pos = sp->rx_dma.phys_addr;  in sprd_start_dma_rx()
472 	sp->rx_buf_tail = sp->rx_dma.virt;  in sprd_start_dma_rx()
478 	return sprd_uart_dma_submit(port, &sp->rx_dma, SPRD_UART_RX_SIZE,  in sprd_start_dma_rx()
489 	if (sp->rx_dma.enable)  in sprd_release_dma()
490 		dma_release_channel(sp->rx_dma.chn);  in sprd_release_dma()
496 	sp->rx_dma.enable = false;  in sprd_release_dma()
505 	sp->rx_dma.enable = true;  in sprd_request_dma()
514 	sp->rx_dma.chn = dma_request_chan(port->dev, "rx");  in sprd_request_dma()
515 	if (IS_ERR(sp->rx_dma.chn)) {  in sprd_request_dma()
517 			PTR_ERR(sp->rx_dma.chn));  in sprd_request_dma()
518 		sp->rx_dma.enable = false;  in sprd_request_dma()
606 	if (sp->rx_dma.enable) {  in sprd_rx()
700 	if (!(sp->rx_dma.enable || sp->tx_dma.enable))  in sprd_uart_dma_startup()
705 		sp->rx_dma.enable = false;  in sprd_uart_dma_startup()
706 		dma_release_channel(sp->rx_dma.chn);  in sprd_uart_dma_startup()
759 	if (!sp->rx_dma.enable)  in sprd_startup()