120 	bool			use_pdc_rx;	/* enable PDC receiver */
121 	short			pdc_rx_idx;	/* current PDC RX buffer */
122 	struct atmel_dma_buffer	pdc_rx[2];	/* PDC receier */
125 	bool			use_pdc_tx;	/* enable PDC transmitter */
126 	struct atmel_dma_buffer	pdc_tx;		/* PDC transmitter */
557 		/* disable PDC transmit */  in atmel_stop_tx()
596 		/* re-enable PDC transmit */  in atmel_start_tx()
618 		/* enable PDC controller */  in atmel_start_rx()
636 		/* disable PDC receive */  in atmel_stop_rx()
1312 		 * PDC receive. Just schedule the tasklet and let it  in atmel_handle_receive()
1453 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_release_tx_pdc()  local
1456 			 pdc->dma_addr,  in atmel_release_tx_pdc()
1457 			 pdc->dma_size,  in atmel_release_tx_pdc()
1468 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_tx_pdc()  local
1475 	xmit->tail += pdc->ofs;  in atmel_tx_pdc()
1478 	port->icount.tx += pdc->ofs;  in atmel_tx_pdc()
1479 	pdc->ofs = 0;  in atmel_tx_pdc()
1483 	/* disable PDC transmit */  in atmel_tx_pdc()
1488 					   pdc->dma_addr,  in atmel_tx_pdc()
1489 					   pdc->dma_size,  in atmel_tx_pdc()
1493 		pdc->ofs = count;  in atmel_tx_pdc()
1496 				  pdc->dma_addr + xmit->tail);  in atmel_tx_pdc()
1498 		/* re-enable PDC transmit */  in atmel_tx_pdc()
1517 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_prepare_tx_pdc()  local
1520 	pdc->buf = xmit->buf;  in atmel_prepare_tx_pdc()
1521 	pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_tx_pdc()
1522 					pdc->buf,  in atmel_prepare_tx_pdc()
1525 	pdc->dma_size = UART_XMIT_SIZE;  in atmel_prepare_tx_pdc()
1526 	pdc->ofs = 0;  in atmel_prepare_tx_pdc()
1599 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_release_rx_pdc()  local
1602 				 pdc->dma_addr,  in atmel_release_rx_pdc()
1603 				 pdc->dma_size,  in atmel_release_rx_pdc()
1605 		kfree(pdc->buf);  in atmel_release_rx_pdc()
1613 	struct atmel_dma_buffer *pdc;  in atmel_rx_from_pdc()  local
1623 		pdc = &atmel_port->pdc_rx[rx_idx];  in atmel_rx_from_pdc()
1624 		head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;  in atmel_rx_from_pdc()
1625 		tail = pdc->ofs;  in atmel_rx_from_pdc()
1627 		/* If the PDC has switched buffers, RPR won't contain  in atmel_rx_from_pdc()
1637 		head = min(head, pdc->dma_size);  in atmel_rx_from_pdc()
1640 			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1641 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1651 			tty_insert_flip_string(tport, pdc->buf + pdc->ofs,  in atmel_rx_from_pdc()
1654 			dma_sync_single_for_device(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1655 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1658 			pdc->ofs = head;  in atmel_rx_from_pdc()
1665 		if (head >= pdc->dma_size) {  in atmel_rx_from_pdc()
1666 			pdc->ofs = 0;  in atmel_rx_from_pdc()
1667 			atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);  in atmel_rx_from_pdc()
1668 			atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);  in atmel_rx_from_pdc()
1673 	} while (head >= pdc->dma_size);  in atmel_rx_from_pdc()
1687 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_prepare_rx_pdc()  local
1689 		pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);  in atmel_prepare_rx_pdc()
1690 		if (pdc->buf == NULL) {  in atmel_prepare_rx_pdc()
1701 		pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_rx_pdc()
1702 						pdc->buf,  in atmel_prepare_rx_pdc()
1705 		pdc->dma_size = PDC_BUFFER_SIZE;  in atmel_prepare_rx_pdc()
1706 		pdc->ofs = 0;  in atmel_prepare_rx_pdc()
1753 	/* DMA/PDC usage specification */  in atmel_init_property()
1992 		/* enable PDC controller */  in atmel_startup()
2621 	/* Store PDC transmit status and disable it */  in atmel_console_write()
2639 	/* Restore PDC transmit status */  in atmel_console_write()