119 	bool			use_pdc_rx;	/* enable PDC receiver */
120 	short			pdc_rx_idx;	/* current PDC RX buffer */
121 	struct atmel_dma_buffer	pdc_rx[2];	/* PDC receier */
124 	bool			use_pdc_tx;	/* enable PDC transmitter */
125 	struct atmel_dma_buffer	pdc_tx;		/* PDC transmitter */
558 		/* disable PDC transmit */  in atmel_stop_tx()
599 		/* re-enable PDC transmit */  in atmel_start_tx()
624 		/* enable PDC controller */  in atmel_start_rx()
642 		/* disable PDC receive */  in atmel_stop_rx()
1299 		 * PDC receive. Just schedule the tasklet and let it  in atmel_handle_receive()
1440 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_release_tx_pdc()  local
1443 			 pdc->dma_addr,  in atmel_release_tx_pdc()
1444 			 pdc->dma_size,  in atmel_release_tx_pdc()
1455 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_tx_pdc()  local
1461 	uart_xmit_advance(port, pdc->ofs);  in atmel_tx_pdc()
1462 	pdc->ofs = 0;  in atmel_tx_pdc()
1466 	/* disable PDC transmit */  in atmel_tx_pdc()
1471 					   pdc->dma_addr,  in atmel_tx_pdc()
1472 					   pdc->dma_size,  in atmel_tx_pdc()
1476 		pdc->ofs = count;  in atmel_tx_pdc()
1479 				  pdc->dma_addr + xmit->tail);  in atmel_tx_pdc()
1481 		/* re-enable PDC transmit */  in atmel_tx_pdc()
1500 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_prepare_tx_pdc()  local
1503 	pdc->buf = xmit->buf;  in atmel_prepare_tx_pdc()
1504 	pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_tx_pdc()
1505 					pdc->buf,  in atmel_prepare_tx_pdc()
1508 	pdc->dma_size = UART_XMIT_SIZE;  in atmel_prepare_tx_pdc()
1509 	pdc->ofs = 0;  in atmel_prepare_tx_pdc()
1582 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_release_rx_pdc()  local
1585 				 pdc->dma_addr,  in atmel_release_rx_pdc()
1586 				 pdc->dma_size,  in atmel_release_rx_pdc()
1588 		kfree(pdc->buf);  in atmel_release_rx_pdc()
1596 	struct atmel_dma_buffer *pdc;  in atmel_rx_from_pdc()  local
1606 		pdc = &atmel_port->pdc_rx[rx_idx];  in atmel_rx_from_pdc()
1607 		head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;  in atmel_rx_from_pdc()
1608 		tail = pdc->ofs;  in atmel_rx_from_pdc()
1610 		/* If the PDC has switched buffers, RPR won't contain  in atmel_rx_from_pdc()
1620 		head = min(head, pdc->dma_size);  in atmel_rx_from_pdc()
1623 			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1624 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1634 			tty_insert_flip_string(tport, pdc->buf + pdc->ofs,  in atmel_rx_from_pdc()
1637 			dma_sync_single_for_device(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1638 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1641 			pdc->ofs = head;  in atmel_rx_from_pdc()
1648 		if (head >= pdc->dma_size) {  in atmel_rx_from_pdc()
1649 			pdc->ofs = 0;  in atmel_rx_from_pdc()
1650 			atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);  in atmel_rx_from_pdc()
1651 			atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);  in atmel_rx_from_pdc()
1656 	} while (head >= pdc->dma_size);  in atmel_rx_from_pdc()
1670 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_prepare_rx_pdc()  local
1672 		pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);  in atmel_prepare_rx_pdc()
1673 		if (pdc->buf == NULL) {  in atmel_prepare_rx_pdc()
1684 		pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_rx_pdc()
1685 						pdc->buf,  in atmel_prepare_rx_pdc()
1688 		pdc->dma_size = PDC_BUFFER_SIZE;  in atmel_prepare_rx_pdc()
1689 		pdc->ofs = 0;  in atmel_prepare_rx_pdc()
1736 	/* DMA/PDC usage specification */  in atmel_init_property()
1975 		/* enable PDC controller */  in atmel_startup()
2604 	/* Store PDC transmit status and disable it */  in atmel_console_write()
2622 	/* Restore PDC transmit status */  in atmel_console_write()