141 static void change_speed(struct m68k_serial *info, struct tty_struct *tty);
212 static void rs_stop(struct tty_struct *tty)  in rs_stop()  argument
214 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_stop()
218 	if (serial_paranoia_check(info, tty->name, "rs_stop"))  in rs_stop()
244 static void rs_start(struct tty_struct *tty)  in rs_start()  argument
246 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_start()
250 	if (serial_paranoia_check(info, tty->name, "rs_start"))  in rs_start()
311 static void transmit_chars(struct m68k_serial *info, struct tty_struct *tty)  in transmit_chars()  argument
322 	if ((info->xmit_cnt <= 0) || !tty || tty->stopped) {  in transmit_chars()
350 	struct tty_struct *tty = tty_port_tty_get(&info->tport);  in rs_interrupt()  local
364 		transmit_chars(info, tty);  in rs_interrupt()
368 	tty_kref_put(tty);  in rs_interrupt()
373 static int startup(struct m68k_serial *info, struct tty_struct *tty)  in startup()  argument
408 	if (tty)  in startup()
409 		clear_bit(TTY_IO_ERROR, &tty->flags);  in startup()
416 	change_speed(info, tty);  in startup()
427 static void shutdown(struct m68k_serial *info, struct tty_struct *tty)  in shutdown()  argument
443 	if (tty)  in shutdown()
444 		set_bit(TTY_IO_ERROR, &tty->flags);  in shutdown()
502 static void change_speed(struct m68k_serial *info, struct tty_struct *tty)  in change_speed()  argument
510 	cflag = tty->termios.c_cflag;  in change_speed()
606 static void rs_set_ldisc(struct tty_struct *tty)  in rs_set_ldisc()  argument
608 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;  in rs_set_ldisc()
610 	if (serial_paranoia_check(info, tty->name, "rs_set_ldisc"))  in rs_set_ldisc()
613 	info->is_cons = (tty->termios.c_line == N_TTY);  in rs_set_ldisc()
618 static void rs_flush_chars(struct tty_struct *tty)  argument
620 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
624 	if (serial_paranoia_check(info, tty->name, "rs_flush_chars"))
633 	if (info->xmit_cnt <= 0 || tty->stopped || !info->xmit_buf) {
664 static int rs_write(struct tty_struct * tty,  argument
668 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
672 	if (serial_paranoia_check(info, tty->name, "rs_write"))
675 	if (!tty || !info->xmit_buf)
699 	if (info->xmit_cnt && !tty->stopped) {
727 static int rs_write_room(struct tty_struct *tty)  argument
729 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
732 	if (serial_paranoia_check(info, tty->name, "rs_write_room"))
740 static int rs_chars_in_buffer(struct tty_struct *tty)  argument
742 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
744 	if (serial_paranoia_check(info, tty->name, "rs_chars_in_buffer"))
749 static void rs_flush_buffer(struct tty_struct *tty)  argument
751 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
754 	if (serial_paranoia_check(info, tty->name, "rs_flush_buffer"))
759 	tty_wakeup(tty);
770 static void rs_throttle(struct tty_struct * tty)  argument
772 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
774 	if (serial_paranoia_check(info, tty->name, "rs_throttle"))
777 	if (I_IXOFF(tty))
778 		info->x_char = STOP_CHAR(tty);
783 static void rs_unthrottle(struct tty_struct * tty)  argument
785 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
787 	if (serial_paranoia_check(info, tty->name, "rs_unthrottle"))
790 	if (I_IXOFF(tty)) {
794 			info->x_char = START_CHAR(tty);
829 static int set_serial_info(struct m68k_serial *info, struct tty_struct *tty,  argument
872 	retval = startup(info, tty);
922 static int rs_ioctl(struct tty_struct *tty,  argument
925 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
928 	if (serial_paranoia_check(info, tty->name, "rs_ioctl"))
934 		if (tty->flags & (1 << TTY_IO_ERROR))
940 			retval = tty_check_change(tty);
943 			tty_wait_until_sent(tty, 0);
948 			retval = tty_check_change(tty);
951 			tty_wait_until_sent(tty, 0);
958 			return set_serial_info(info, tty,
973 static void rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)  argument
975 	struct m68k_serial *info = (struct m68k_serial *)tty->driver_data;
977 	change_speed(info, tty);
980 	    !(tty->termios.c_cflag & CRTSCTS))
981 		rs_start(tty);
995 static void rs_close(struct tty_struct *tty, struct file * filp)  argument
997 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
1002 	if (serial_paranoia_check(info, tty->name, "rs_close"))
1012 	if ((tty->count == 1) && (port->count != 1)) {
1038 	tty->closing = 1;
1040 		tty_wait_until_sent(tty, port->closing_wait);
1051 	shutdown(info, tty);
1052 	rs_flush_buffer(tty);
1054 	tty_ldisc_flush(tty);
1055 	tty->closing = 0;
1059 	if (tty->ldisc.num != ldiscs[N_TTY].num) {
1060 		if (tty->ldisc.close)
1061 			(tty->ldisc.close)(tty);
1062 		tty->ldisc = ldiscs[N_TTY];
1063 		tty->termios.c_line = N_TTY;
1064 		if (tty->ldisc.open)
1065 			(tty->ldisc.open)(tty);
1080 void rs_hangup(struct tty_struct *tty)  argument
1082 	struct m68k_serial * info = (struct m68k_serial *)tty->driver_data;
1084 	if (serial_paranoia_check(info, tty->name, "rs_hangup"))
1087 	rs_flush_buffer(tty);
1088 	shutdown(info, tty);
1101 int rs_open(struct tty_struct *tty, struct file * filp)  argument
1106 	info = &m68k_soft[tty->index];
1108 	if (serial_paranoia_check(info, tty->name, "rs_open"))
1112 	tty->driver_data = info;
1113 	tty_port_tty_set(&info->tport, tty);
1118 	retval = startup(info, tty);
1122 	return tty_port_block_til_ready(&info->tport, tty, filp);