481 static int mxser_set_baud(struct tty_struct *tty, speed_t newspd)  in mxser_set_baud()  argument
483 	struct mxser_port *info = tty->driver_data;  in mxser_set_baud()
493 		tty_encode_baud_rate(tty, 134, 134);  in mxser_set_baud()
499 		tty_encode_baud_rate(tty, baud, baud);  in mxser_set_baud()
529 	if (C_BAUD(tty) == BOTHER) {  in mxser_set_baud()
546 static void mxser_handle_cts(struct tty_struct *tty, struct mxser_port *info,  in mxser_handle_cts()  argument
551 	if (tty->hw_stopped) {  in mxser_handle_cts()
553 			tty->hw_stopped = false;  in mxser_handle_cts()
557 			tty_wakeup(tty);  in mxser_handle_cts()
563 	tty->hw_stopped = true;  in mxser_handle_cts()
572 static void mxser_change_speed(struct tty_struct *tty,  in mxser_change_speed()  argument
575 	struct mxser_port *info = tty->driver_data;  in mxser_change_speed()
578 	cflag = tty->termios.c_cflag;  in mxser_change_speed()
580 	if (mxser_set_baud(tty, tty_get_baud_rate(tty))) {  in mxser_change_speed()
584 			tty_encode_baud_rate(tty, baud, baud);  in mxser_change_speed()
589 	cval = UART_LCR_WLEN(tty_get_char_size(tty->termios.c_cflag));  in mxser_change_speed()
632 			mxser_handle_cts(tty, info,  in mxser_change_speed()
646 	if (I_INPCK(tty))  in mxser_change_speed()
648 	if (I_BRKINT(tty) || I_PARMRK(tty))  in mxser_change_speed()
653 	if (I_IGNBRK(tty)) {  in mxser_change_speed()
660 		if (I_IGNPAR(tty)) {  in mxser_change_speed()
672 		mxser_set_must_xon1_value(info->ioaddr, START_CHAR(tty));  in mxser_change_speed()
673 		mxser_set_must_xoff1_value(info->ioaddr, STOP_CHAR(tty));  in mxser_change_speed()
674 		mxser_must_set_rx_sw_flow_control(info->ioaddr, I_IXON(tty));  in mxser_change_speed()
675 		mxser_must_set_tx_sw_flow_control(info->ioaddr, I_IXOFF(tty));  in mxser_change_speed()
683 static u8 mxser_check_modem_status(struct tty_struct *tty,  in mxser_check_modem_status()  argument
708 		mxser_handle_cts(tty, port, msr);  in mxser_check_modem_status()
723 static int mxser_activate(struct tty_port *port, struct tty_struct *tty)  in mxser_activate()  argument
736 		set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
756 			set_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
796 	clear_bit(TTY_IO_ERROR, &tty->flags);  in mxser_activate()
802 	mxser_change_speed(tty, NULL);  in mxser_activate()
870 static int mxser_open(struct tty_struct *tty, struct file *filp)  in mxser_open()  argument
872 	struct tty_port *tport = tty->port;  in mxser_open()
875 	tty->driver_data = port;  in mxser_open()
877 	return tty_port_open(tport, tty, filp);  in mxser_open()
880 static void mxser_flush_buffer(struct tty_struct *tty)  in mxser_flush_buffer()  argument
882 	struct mxser_port *info = tty->driver_data;  in mxser_flush_buffer()
893 	tty_wakeup(tty);  in mxser_flush_buffer()
896 static void mxser_close(struct tty_struct *tty, struct file *filp)  in mxser_close()  argument
898 	tty_port_close(tty->port, tty, filp);  in mxser_close()
901 static ssize_t mxser_write(struct tty_struct *tty, const u8 *buf, size_t count)  in mxser_write()  argument
903 	struct mxser_port *info = tty->driver_data;  in mxser_write()
913 	if (!is_empty && !tty->flow.stopped)  in mxser_write()
914 		if (!tty->hw_stopped || mxser_16550A_or_MUST(info))  in mxser_write()
920 static int mxser_put_char(struct tty_struct *tty, u8 ch)  in mxser_put_char()  argument
922 	struct mxser_port *info = tty->driver_data;  in mxser_put_char()
934 static void mxser_flush_chars(struct tty_struct *tty)  in mxser_flush_chars()  argument
936 	struct mxser_port *info = tty->driver_data;  in mxser_flush_chars()
938 	if (kfifo_is_empty(&info->port.xmit_fifo) || tty->flow.stopped ||  in mxser_flush_chars()
939 			(tty->hw_stopped && !mxser_16550A_or_MUST(info)))  in mxser_flush_chars()
945 static unsigned int mxser_write_room(struct tty_struct *tty)  in mxser_write_room()  argument
947 	struct mxser_port *info = tty->driver_data;  in mxser_write_room()
952 static unsigned int mxser_chars_in_buffer(struct tty_struct *tty)  in mxser_chars_in_buffer()  argument
954 	struct mxser_port *info = tty->driver_data;  in mxser_chars_in_buffer()
964 static int mxser_get_serial_info(struct tty_struct *tty,  in mxser_get_serial_info()  argument
967 	struct mxser_port *info = tty->driver_data;  in mxser_get_serial_info()
979 	ss->line = tty->index;  in mxser_get_serial_info()
991 static int mxser_set_serial_info(struct tty_struct *tty,  in mxser_set_serial_info()  argument
994 	struct mxser_port *info = tty->driver_data;  in mxser_set_serial_info()
1001 	if (tty_io_error(tty))  in mxser_set_serial_info()
1047 			tty_encode_baud_rate(tty, baud, baud);  in mxser_set_serial_info()
1058 			mxser_change_speed(tty, NULL);  in mxser_set_serial_info()
1062 		retval = mxser_activate(port, tty);  in mxser_set_serial_info()
1094 static int mxser_tiocmget(struct tty_struct *tty)  in mxser_tiocmget()  argument
1096 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmget()
1101 	if (tty_io_error(tty))  in mxser_tiocmget()
1106 	msr = mxser_check_modem_status(tty, info);  in mxser_tiocmget()
1117 static int mxser_tiocmset(struct tty_struct *tty,  in mxser_tiocmset()  argument
1120 	struct mxser_port *info = tty->driver_data;  in mxser_tiocmset()
1123 	if (tty_io_error(tty))  in mxser_tiocmset()
1199 static int mxser_ioctl(struct tty_struct *tty,  in mxser_ioctl()  argument
1202 	struct mxser_port *info = tty->driver_data;  in mxser_ioctl()
1208 		return mxser_ioctl_op_mode(info, tty->index,  in mxser_ioctl()
1211 	if (cmd != TIOCMIWAIT && tty_io_error(tty))  in mxser_ioctl()
1243 static int mxser_get_icount(struct tty_struct *tty,  in mxser_get_icount()  argument
1247 	struct mxser_port *info = tty->driver_data;  in mxser_get_icount()
1273 static void mxser_throttle(struct tty_struct *tty)  in mxser_throttle()  argument
1275 	struct mxser_port *info = tty->driver_data;  in mxser_throttle()
1277 	if (I_IXOFF(tty)) {  in mxser_throttle()
1282 			info->x_char = STOP_CHAR(tty);  in mxser_throttle()
1289 	if (C_CRTSCTS(tty)) {  in mxser_throttle()
1295 static void mxser_unthrottle(struct tty_struct *tty)  in mxser_unthrottle()  argument
1297 	struct mxser_port *info = tty->driver_data;  in mxser_unthrottle()
1300 	if (I_IXOFF(tty)) {  in mxser_unthrottle()
1308 				info->x_char = START_CHAR(tty);  in mxser_unthrottle()
1316 	if (C_CRTSCTS(tty)) {  in mxser_unthrottle()
1328 static void mxser_stop(struct tty_struct *tty)  in mxser_stop()  argument
1330 	struct mxser_port *info = tty->driver_data;  in mxser_stop()
1339 static void mxser_start(struct tty_struct *tty)  in mxser_start()  argument
1341 	struct mxser_port *info = tty->driver_data;  in mxser_start()
1350 static void mxser_set_termios(struct tty_struct *tty,  in mxser_set_termios()  argument
1353 	struct mxser_port *info = tty->driver_data;  in mxser_set_termios()
1357 	mxser_change_speed(tty, old_termios);  in mxser_set_termios()
1360 	if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {  in mxser_set_termios()
1361 		tty->hw_stopped = false;  in mxser_set_termios()
1362 		mxser_start(tty);  in mxser_set_termios()
1366 	if ((old_termios->c_iflag & IXON) && !I_IXON(tty)) {  in mxser_set_termios()
1367 		tty->flow.stopped = 0;  in mxser_set_termios()
1375 		mxser_start(tty);  in mxser_set_termios()
1394 static void mxser_wait_until_sent(struct tty_struct *tty, int timeout)  in mxser_wait_until_sent()  argument
1396 	struct mxser_port *info = tty->driver_data;  in mxser_wait_until_sent()
1448 static void mxser_hangup(struct tty_struct *tty)  in mxser_hangup()  argument
1450 	struct mxser_port *info = tty->driver_data;  in mxser_hangup()
1452 	mxser_flush_buffer(tty);  in mxser_hangup()
1459 static int mxser_rs_break(struct tty_struct *tty, int break_state)  in mxser_rs_break()  argument
1461 	struct mxser_port *info = tty->driver_data;  in mxser_rs_break()
1500 static u8 mxser_receive_chars_old(struct tty_struct *tty,  in mxser_receive_chars_old()  argument
1528 						do_SAK(tty);  in mxser_receive_chars_old()
1555 static u8 mxser_receive_chars(struct tty_struct *tty,  in mxser_receive_chars()  argument
1559 		status = mxser_receive_chars_old(tty, port, status);  in mxser_receive_chars()
1566 static void mxser_transmit_chars(struct tty_struct *tty, struct mxser_port *port)  in mxser_transmit_chars()  argument
1577 	if (kfifo_is_empty(&port->port.xmit_fifo) || tty->flow.stopped ||  in mxser_transmit_chars()
1578 			(tty->hw_stopped && !mxser_16550A_or_MUST(port))) {  in mxser_transmit_chars()
1595 		tty_wakeup(tty);  in mxser_transmit_chars()
1603 	struct tty_struct *tty;  in mxser_port_isr()  local
1612 	tty = tty_port_tty_get(&port->port);  in mxser_port_isr()
1613 	if (!tty) {  in mxser_port_isr()
1630 			status = mxser_receive_chars(tty, port, status);  in mxser_port_isr()
1634 			status = mxser_receive_chars(tty, port, status);  in mxser_port_isr()
1637 	mxser_check_modem_status(tty, port);  in mxser_port_isr()
1641 			mxser_transmit_chars(tty, port);  in mxser_port_isr()
1644 			mxser_transmit_chars(tty, port);  in mxser_port_isr()
1648 	tty_kref_put(tty);  in mxser_port_isr()