117 	bool			use_pdc_rx;	/* enable PDC receiver */
118 	short			pdc_rx_idx;	/* current PDC RX buffer */
119 	struct atmel_dma_buffer	pdc_rx[2];	/* PDC receier */
122 	bool			use_pdc_tx;	/* enable PDC transmitter */
123 	struct atmel_dma_buffer	pdc_tx;		/* PDC transmitter */
554 		/* disable PDC transmit */  in atmel_stop_tx()
593 		/* re-enable PDC transmit */  in atmel_start_tx()
615 		/* enable PDC controller */  in atmel_start_rx()
633 		/* disable PDC receive */  in atmel_stop_rx()
1315 		 * PDC receive. Just schedule the tasklet and let it  in atmel_handle_receive()
1456 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_release_tx_pdc()  local
1459 			 pdc->dma_addr,  in atmel_release_tx_pdc()
1460 			 pdc->dma_size,  in atmel_release_tx_pdc()
1471 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_tx_pdc()  local
1478 	xmit->tail += pdc->ofs;  in atmel_tx_pdc()
1481 	port->icount.tx += pdc->ofs;  in atmel_tx_pdc()
1482 	pdc->ofs = 0;  in atmel_tx_pdc()
1486 	/* disable PDC transmit */  in atmel_tx_pdc()
1491 					   pdc->dma_addr,  in atmel_tx_pdc()
1492 					   pdc->dma_size,  in atmel_tx_pdc()
1496 		pdc->ofs = count;  in atmel_tx_pdc()
1499 				  pdc->dma_addr + xmit->tail);  in atmel_tx_pdc()
1501 		/* re-enable PDC transmit */  in atmel_tx_pdc()
1520 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_prepare_tx_pdc()  local
1523 	pdc->buf = xmit->buf;  in atmel_prepare_tx_pdc()
1524 	pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_tx_pdc()
1525 					pdc->buf,  in atmel_prepare_tx_pdc()
1528 	pdc->dma_size = UART_XMIT_SIZE;  in atmel_prepare_tx_pdc()
1529 	pdc->ofs = 0;  in atmel_prepare_tx_pdc()
1608 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_release_rx_pdc()  local
1611 				 pdc->dma_addr,  in atmel_release_rx_pdc()
1612 				 pdc->dma_size,  in atmel_release_rx_pdc()
1614 		kfree(pdc->buf);  in atmel_release_rx_pdc()
1622 	struct atmel_dma_buffer *pdc;  in atmel_rx_from_pdc()  local
1632 		pdc = &atmel_port->pdc_rx[rx_idx];  in atmel_rx_from_pdc()
1633 		head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;  in atmel_rx_from_pdc()
1634 		tail = pdc->ofs;  in atmel_rx_from_pdc()
1636 		/* If the PDC has switched buffers, RPR won't contain  in atmel_rx_from_pdc()
1646 		head = min(head, pdc->dma_size);  in atmel_rx_from_pdc()
1649 			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1650 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1660 			tty_insert_flip_string(tport, pdc->buf + pdc->ofs,  in atmel_rx_from_pdc()
1663 			dma_sync_single_for_device(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1664 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1667 			pdc->ofs = head;  in atmel_rx_from_pdc()
1674 		if (head >= pdc->dma_size) {  in atmel_rx_from_pdc()
1675 			pdc->ofs = 0;  in atmel_rx_from_pdc()
1676 			atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);  in atmel_rx_from_pdc()
1677 			atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);  in atmel_rx_from_pdc()
1682 	} while (head >= pdc->dma_size);  in atmel_rx_from_pdc()
1702 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_prepare_rx_pdc()  local
1704 		pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);  in atmel_prepare_rx_pdc()
1705 		if (pdc->buf == NULL) {  in atmel_prepare_rx_pdc()
1716 		pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_rx_pdc()
1717 						pdc->buf,  in atmel_prepare_rx_pdc()
1720 		pdc->dma_size = PDC_BUFFER_SIZE;  in atmel_prepare_rx_pdc()
1721 		pdc->ofs = 0;  in atmel_prepare_rx_pdc()
1768 	/* DMA/PDC usage specification */  in atmel_init_property()
2004 		/* enable PDC controller */  in atmel_startup()
2585 	/* Store PDC transmit status and disable it */  in atmel_console_write()
2603 	/* Restore PDC transmit status */  in atmel_console_write()