3  * MEN 16z135 High Speed UART
132  * @uart: The UART port
136 static inline void men_z135_reg_set(struct men_z135_port *uart,  in men_z135_reg_set()  argument
139 	struct uart_port *port = &uart->port;  in men_z135_reg_set()
143 	spin_lock_irqsave(&uart->lock, flags);  in men_z135_reg_set()
149 	spin_unlock_irqrestore(&uart->lock, flags);  in men_z135_reg_set()
154  * @uart: The UART port
158 static void men_z135_reg_clr(struct men_z135_port *uart,  in men_z135_reg_clr()  argument
161 	struct uart_port *port = &uart->port;  in men_z135_reg_clr()
165 	spin_lock_irqsave(&uart->lock, flags);  in men_z135_reg_clr()
171 	spin_unlock_irqrestore(&uart->lock, flags);  in men_z135_reg_clr()
176  * @uart: The UART port
181 static void men_z135_handle_modem_status(struct men_z135_port *uart)  in men_z135_handle_modem_status()  argument
185 	msr = (uart->stat_reg >> 8) & 0xff;  in men_z135_handle_modem_status()
188 		uart_handle_dcd_change(&uart->port,  in men_z135_handle_modem_status()
191 		uart_handle_cts_change(&uart->port,  in men_z135_handle_modem_status()
195 static void men_z135_handle_lsr(struct men_z135_port *uart)  in men_z135_handle_lsr()  argument
197 	struct uart_port *port = &uart->port;  in men_z135_handle_lsr()
200 	lsr = (uart->stat_reg >> 16) & 0xff;  in men_z135_handle_lsr()
216  * @uart: The UART port
220 static u16 get_rx_fifo_content(struct men_z135_port *uart)  in get_rx_fifo_content()  argument
222 	struct uart_port *port = &uart->port;  in get_rx_fifo_content()
239  * @uart: Pointer to struct men_z135_port
243 static void men_z135_handle_rx(struct men_z135_port *uart)  in men_z135_handle_rx()  argument
245 	struct uart_port *port = &uart->port;  in men_z135_handle_rx()
251 	size = get_rx_fifo_content(uart);  in men_z135_handle_rx()
264 		dev_warn(&uart->mdev->dev,  in men_z135_handle_rx()
271 	memcpy_fromio(uart->rxbuf, port->membase + MEN_Z135_RX_RAM, room);  in men_z135_handle_rx()
276 	copied = tty_insert_flip_string(tport, uart->rxbuf, room);  in men_z135_handle_rx()
278 		dev_warn(&uart->mdev->dev,  in men_z135_handle_rx()
290  * @uart: Pointer to struct men_z135_port
293 static void men_z135_handle_tx(struct men_z135_port *uart)  in men_z135_handle_tx()  argument
295 	struct uart_port *port = &uart->port;  in men_z135_handle_tx()
329 		dev_err(&uart->mdev->dev,  in men_z135_handle_tx()
366 		men_z135_reg_set(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_TXCIEN);  in men_z135_handle_tx()
368 		men_z135_reg_clr(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_TXCIEN);  in men_z135_handle_tx()
378  * @data: Pointer to UART port
387 	struct men_z135_port *uart = (struct men_z135_port *)data;  in men_z135_intr()  local
388 	struct uart_port *port = &uart->port;  in men_z135_intr()
392 	uart->stat_reg = ioread32(port->membase + MEN_Z135_STAT_REG);  in men_z135_intr()
393 	irq_id = IRQ_ID(uart->stat_reg);  in men_z135_intr()
403 		men_z135_handle_lsr(uart);  in men_z135_intr()
409 			dev_dbg(&uart->mdev->dev, "Character Timeout Indication\n");  in men_z135_intr()
410 		men_z135_handle_rx(uart);  in men_z135_intr()
415 		men_z135_handle_tx(uart);  in men_z135_intr()
420 		men_z135_handle_modem_status(uart);  in men_z135_intr()
431  * @uart: z135 private uart port structure
436 static int men_z135_request_irq(struct men_z135_port *uart)  in men_z135_request_irq()  argument
438 	struct device *dev = &uart->mdev->dev;  in men_z135_request_irq()
439 	struct uart_port *port = &uart->port;  in men_z135_request_irq()
443 			"men_z135_intr", uart);  in men_z135_request_irq()
452  * @port: The UART port
473  * @port: The UART port
516  * @port: The UART port
541  * @port: The UART port
549 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_stop_tx()  local
551 	men_z135_reg_clr(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_TXCIEN);  in men_z135_stop_tx()
556  * port: The UART port
562 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_disable_ms()  local
564 	men_z135_reg_clr(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_MSIEN);  in men_z135_disable_ms()
569  * @port: The UART port
576 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_start_tx()  local
578 	if (uart->automode)  in men_z135_start_tx()
581 	men_z135_handle_tx(uart);  in men_z135_start_tx()
586  * @port: The UART port
592 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_stop_rx()  local
594 	men_z135_reg_clr(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_RXCIEN);  in men_z135_stop_rx()
605 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_enable_ms()  local
607 	men_z135_reg_set(uart, MEN_Z135_CONF_REG, MEN_Z135_IER_MSIEN);  in men_z135_enable_ms()
612 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_startup()  local
616 	err = men_z135_request_irq(uart);  in men_z135_startup()
638 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_shutdown()  local
643 	men_z135_reg_clr(uart, MEN_Z135_CONF_REG, conf_reg);  in men_z135_shutdown()
645 	free_irq(uart->port.irq, uart);  in men_z135_shutdown()
652 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_set_termios()  local
696 		uart->automode = true;  in men_z135_set_termios()
700 		uart->automode = false;  in men_z135_set_termios()
732 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_release_port()  local
737 	mcb_release_mem(uart->mem);  in men_z135_release_port()
742 	struct men_z135_port *uart = to_men_z135(port);  in men_z135_request_port()  local
743 	struct mcb_device *mdev = uart->mdev;  in men_z135_request_port()
746 	mem = mcb_request_mem(uart->mdev, dev_name(&mdev->dev));  in men_z135_request_port()
751 	uart->mem = mem;  in men_z135_request_port()
807  * new uart port to the tty layer.
812 	struct men_z135_port *uart;  in men_z135_probe()  local
819 	uart = devm_kzalloc(dev, sizeof(struct men_z135_port), GFP_KERNEL);  in men_z135_probe()
820 	if (!uart)  in men_z135_probe()
823 	uart->rxbuf = (unsigned char *)__get_free_page(GFP_KERNEL);  in men_z135_probe()
824 	if (!uart->rxbuf)  in men_z135_probe()
829 	mcb_set_drvdata(mdev, uart);  in men_z135_probe()
831 	uart->port.uartclk = MEN_Z135_BASECLK * 16;  in men_z135_probe()
832 	uart->port.fifosize = MEN_Z135_FIFO_SIZE;  in men_z135_probe()
833 	uart->port.iotype = UPIO_MEM;  in men_z135_probe()
834 	uart->port.ops = &men_z135_ops;  in men_z135_probe()
835 	uart->port.irq = mcb_get_irq(mdev);  in men_z135_probe()
836 	uart->port.iotype = UPIO_MEM;  in men_z135_probe()
837 	uart->port.flags = UPF_BOOT_AUTOCONF | UPF_IOREMAP;  in men_z135_probe()
838 	uart->port.line = line++;  in men_z135_probe()
839 	uart->port.dev = dev;  in men_z135_probe()
840 	uart->port.type = PORT_MEN_Z135;  in men_z135_probe()
841 	uart->port.mapbase = mem->start;  in men_z135_probe()
842 	uart->port.membase = NULL;  in men_z135_probe()
843 	uart->mdev = mdev;  in men_z135_probe()
845 	spin_lock_init(&uart->lock);  in men_z135_probe()
847 	err = uart_add_one_port(&men_z135_driver, &uart->port);  in men_z135_probe()
854 	free_page((unsigned long) uart->rxbuf);  in men_z135_probe()
855 	dev_err(dev, "Failed to add UART: %d\n", err);  in men_z135_probe()
867 	struct men_z135_port *uart = mcb_get_drvdata(mdev);  in men_z135_remove()  local
870 	uart_remove_one_port(&men_z135_driver, &uart->port);  in men_z135_remove()
871 	free_page((unsigned long) uart->rxbuf);  in men_z135_remove()
882 		.name = "z135-uart",
902 		pr_err("Failed to register UART: %d\n", err);  in men_z135_init()
931 MODULE_DESCRIPTION("MEN 16z135 High Speed UART");