121 	bool			use_pdc_rx;	/* enable PDC receiver */
122 	short			pdc_rx_idx;	/* current PDC RX buffer */
123 	struct atmel_dma_buffer	pdc_rx[2];	/* PDC receier */
126 	bool			use_pdc_tx;	/* enable PDC transmitter */
127 	struct atmel_dma_buffer	pdc_tx;		/* PDC transmitter */
560 		/* disable PDC transmit */  in atmel_stop_tx()
601 		/* re-enable PDC transmit */  in atmel_start_tx()
626 		/* enable PDC controller */  in atmel_start_rx()
644 		/* disable PDC receive */  in atmel_stop_rx()
1290 		 * PDC receive. Just schedule the tasklet and let it  in atmel_handle_receive()
1431 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_release_tx_pdc()  local
1434 			 pdc->dma_addr,  in atmel_release_tx_pdc()
1435 			 pdc->dma_size,  in atmel_release_tx_pdc()
1446 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_tx_pdc()  local
1451 	uart_xmit_advance(port, pdc->ofs);  in atmel_tx_pdc()
1452 	pdc->ofs = 0;  in atmel_tx_pdc()
1456 	/* disable PDC transmit */  in atmel_tx_pdc()
1463 					   pdc->dma_addr,  in atmel_tx_pdc()
1464 					   pdc->dma_size,  in atmel_tx_pdc()
1469 		pdc->ofs = count;  in atmel_tx_pdc()
1471 		atmel_uart_writel(port, ATMEL_PDC_TPR, pdc->dma_addr + tail);  in atmel_tx_pdc()
1473 		/* re-enable PDC transmit */  in atmel_tx_pdc()
1492 	struct atmel_dma_buffer *pdc = &atmel_port->pdc_tx;  in atmel_prepare_tx_pdc()  local
1495 	pdc->buf = tport->xmit_buf;  in atmel_prepare_tx_pdc()
1496 	pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_tx_pdc()
1497 					pdc->buf,  in atmel_prepare_tx_pdc()
1500 	pdc->dma_size = UART_XMIT_SIZE;  in atmel_prepare_tx_pdc()
1501 	pdc->ofs = 0;  in atmel_prepare_tx_pdc()
1574 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_release_rx_pdc()  local
1577 				 pdc->dma_addr,  in atmel_release_rx_pdc()
1578 				 pdc->dma_size,  in atmel_release_rx_pdc()
1580 		kfree(pdc->buf);  in atmel_release_rx_pdc()
1588 	struct atmel_dma_buffer *pdc;  in atmel_rx_from_pdc()  local
1598 		pdc = &atmel_port->pdc_rx[rx_idx];  in atmel_rx_from_pdc()
1599 		head = atmel_uart_readl(port, ATMEL_PDC_RPR) - pdc->dma_addr;  in atmel_rx_from_pdc()
1600 		tail = pdc->ofs;  in atmel_rx_from_pdc()
1602 		/* If the PDC has switched buffers, RPR won't contain  in atmel_rx_from_pdc()
1612 		head = min(head, pdc->dma_size);  in atmel_rx_from_pdc()
1615 			dma_sync_single_for_cpu(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1616 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1626 			tty_insert_flip_string(tport, pdc->buf + pdc->ofs,  in atmel_rx_from_pdc()
1629 			dma_sync_single_for_device(port->dev, pdc->dma_addr,  in atmel_rx_from_pdc()
1630 					pdc->dma_size, DMA_FROM_DEVICE);  in atmel_rx_from_pdc()
1633 			pdc->ofs = head;  in atmel_rx_from_pdc()
1640 		if (head >= pdc->dma_size) {  in atmel_rx_from_pdc()
1641 			pdc->ofs = 0;  in atmel_rx_from_pdc()
1642 			atmel_uart_writel(port, ATMEL_PDC_RNPR, pdc->dma_addr);  in atmel_rx_from_pdc()
1643 			atmel_uart_writel(port, ATMEL_PDC_RNCR, pdc->dma_size);  in atmel_rx_from_pdc()
1648 	} while (head >= pdc->dma_size);  in atmel_rx_from_pdc()
1662 		struct atmel_dma_buffer *pdc = &atmel_port->pdc_rx[i];  in atmel_prepare_rx_pdc()  local
1664 		pdc->buf = kmalloc(PDC_BUFFER_SIZE, GFP_KERNEL);  in atmel_prepare_rx_pdc()
1665 		if (pdc->buf == NULL) {  in atmel_prepare_rx_pdc()
1676 		pdc->dma_addr = dma_map_single(port->dev,  in atmel_prepare_rx_pdc()
1677 						pdc->buf,  in atmel_prepare_rx_pdc()
1680 		pdc->dma_size = PDC_BUFFER_SIZE;  in atmel_prepare_rx_pdc()
1681 		pdc->ofs = 0;  in atmel_prepare_rx_pdc()
1728 	/* DMA/PDC usage specification */  in atmel_init_property()
1967 		/* enable PDC controller */  in atmel_startup()
2596 	/* Store PDC transmit status and disable it */  in atmel_console_write()
2614 	/* Restore PDC transmit status */  in atmel_console_write()