126 	struct sprd_uart_dma rx_dma;  member
180 	if (sp->rx_dma.enable)  in sprd_stop_rx()
181 		dmaengine_terminate_all(sp->rx_dma.chn);  in sprd_stop_rx()
354 	sp->rx_dma.virt = dma_alloc_coherent(sp->port.dev, SPRD_UART_RX_SIZE,  in sprd_rx_alloc_buf()
355 					     &sp->rx_dma.phys_addr, GFP_KERNEL);  in sprd_rx_alloc_buf()
356 	if (!sp->rx_dma.virt)  in sprd_rx_alloc_buf()
364 	if (sp->rx_dma.virt)  in sprd_rx_free_buf()
366 				  sp->rx_dma.virt, sp->rx_dma.phys_addr);  in sprd_rx_free_buf()
367 	sp->rx_dma.virt = NULL;  in sprd_rx_free_buf()
381 	return dmaengine_slave_config(sp->rx_dma.chn, &cfg);  in sprd_rx_dma_config()
390 	port->icount.rx += sp->rx_dma.trans_len;  in sprd_uart_dma_rx()
391 	tty_insert_flip_string(tty, sp->rx_buf_tail, sp->rx_dma.trans_len);  in sprd_uart_dma_rx()
402 	status = dmaengine_tx_status(sp->rx_dma.chn,  in sprd_uart_dma_irq()
403 				     sp->rx_dma.cookie, &state);  in sprd_uart_dma_irq()
407 	if (!state.residue && sp->pos == sp->rx_dma.phys_addr)  in sprd_uart_dma_irq()
411 		sp->rx_dma.trans_len = SPRD_UART_RX_SIZE +  in sprd_uart_dma_irq()
412 			sp->rx_dma.phys_addr - sp->pos;  in sprd_uart_dma_irq()
413 		sp->pos = sp->rx_dma.phys_addr;  in sprd_uart_dma_irq()
415 		sp->rx_dma.trans_len = state.residue - sp->pos;  in sprd_uart_dma_irq()
420 	sp->rx_buf_tail += sp->rx_dma.trans_len;  in sprd_uart_dma_irq()
434 	status = dmaengine_tx_status(sp->rx_dma.chn,  in sprd_complete_rx_dma()
435 				     sp->rx_dma.cookie, &state);  in sprd_complete_rx_dma()
442 	if (sp->pos != sp->rx_dma.phys_addr) {  in sprd_complete_rx_dma()
443 		sp->rx_dma.trans_len =  SPRD_UART_RX_SIZE +  in sprd_complete_rx_dma()
444 			sp->rx_dma.phys_addr - sp->pos;  in sprd_complete_rx_dma()
446 		sp->rx_buf_tail += sp->rx_dma.trans_len;  in sprd_complete_rx_dma()
461 	if (!sp->rx_dma.enable)  in sprd_start_dma_rx()
464 	sp->pos = sp->rx_dma.phys_addr;  in sprd_start_dma_rx()
465 	sp->rx_buf_tail = sp->rx_dma.virt;  in sprd_start_dma_rx()
471 	return sprd_uart_dma_submit(port, &sp->rx_dma, SPRD_UART_RX_SIZE,  in sprd_start_dma_rx()
482 	if (sp->rx_dma.enable)  in sprd_release_dma()
483 		dma_release_channel(sp->rx_dma.chn);  in sprd_release_dma()
489 	sp->rx_dma.enable = false;  in sprd_release_dma()
498 	sp->rx_dma.enable = true;  in sprd_request_dma()
507 	sp->rx_dma.chn = dma_request_chan(port->dev, "rx");  in sprd_request_dma()
508 	if (IS_ERR(sp->rx_dma.chn)) {  in sprd_request_dma()
510 			PTR_ERR(sp->rx_dma.chn));  in sprd_request_dma()
511 		sp->rx_dma.enable = false;  in sprd_request_dma()
600 	if (sp->rx_dma.enable) {  in sprd_rx()
674 	if (!(sp->rx_dma.enable || sp->tx_dma.enable))  in sprd_uart_dma_startup()
679 		sp->rx_dma.enable = false;  in sprd_uart_dma_startup()
680 		dma_release_channel(sp->rx_dma.chn);  in sprd_uart_dma_startup()
733 	if (!sp->rx_dma.enable)  in sprd_startup()