693 	struct circ_buf *xmit = &port->state->xmit;  in atmel_tx_chars()  local
701 	if (uart_circ_empty(xmit) || uart_tx_stopped(port))  in atmel_tx_chars()
705 		UART_PUT_CHAR(port, xmit->buf[xmit->tail]);  in atmel_tx_chars()
706 		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);  in atmel_tx_chars()
708 		if (uart_circ_empty(xmit))  in atmel_tx_chars()
712 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in atmel_tx_chars()
715 	if (!uart_circ_empty(xmit))  in atmel_tx_chars()
724 	struct circ_buf *xmit = &port->state->xmit;  in atmel_complete_tx_dma()  local
732 	xmit->tail += sg_dma_len(&atmel_port->sg_tx);  in atmel_complete_tx_dma()
733 	xmit->tail &= UART_XMIT_SIZE - 1;  in atmel_complete_tx_dma()
743 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in atmel_complete_tx_dma()
751 	if (!uart_circ_empty(xmit))  in atmel_complete_tx_dma()
780 	struct circ_buf *xmit = &port->state->xmit;  in atmel_tx_dma()  local
789 	if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {  in atmel_tx_dma()
799 		sg->offset = xmit->tail & (UART_XMIT_SIZE - 1);  in atmel_tx_dma()
803 		sg_dma_len(sg) = CIRC_CNT_TO_END(xmit->head,  in atmel_tx_dma()
804 						xmit->tail,  in atmel_tx_dma()
833 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in atmel_tx_dma()
856 	BUG_ON(!PAGE_ALIGNED(port->state->xmit.buf));  in atmel_prepare_tx_dma()
858 			virt_to_page(port->state->xmit.buf),  in atmel_prepare_tx_dma()
860 			(int)port->state->xmit.buf & ~PAGE_MASK);  in atmel_prepare_tx_dma()
872 			port->state->xmit.buf,  in atmel_prepare_tx_dma()
1254 	struct circ_buf *xmit = &port->state->xmit;  in atmel_tx_pdc()  local
1262 	xmit->tail += pdc->ofs;  in atmel_tx_pdc()
1263 	xmit->tail &= UART_XMIT_SIZE - 1;  in atmel_tx_pdc()
1273 	if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {  in atmel_tx_pdc()
1279 		count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);  in atmel_tx_pdc()
1282 		UART_PUT_TPR(port, pdc->dma_addr + xmit->tail);  in atmel_tx_pdc()
1296 	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)  in atmel_tx_pdc()
1304 	struct circ_buf *xmit = &port->state->xmit;  in atmel_prepare_tx_pdc()  local
1306 	pdc->buf = xmit->buf;  in atmel_prepare_tx_pdc()