18 #include <linux/tty.h>
107 static void xr21v141x_set_line_settings(struct tty_struct *tty,
137 	void (*set_line_settings)(struct tty_struct *tty,
438 static int xr_tiocmget(struct tty_struct *tty)  in xr_tiocmget()  argument
440 	struct usb_serial_port *port = tty->driver_data;  in xr_tiocmget()
492 static int xr_tiocmset(struct tty_struct *tty,  in xr_tiocmset()  argument
495 	struct usb_serial_port *port = tty->driver_data;  in xr_tiocmset()
508 static int xr_break_ctl(struct tty_struct *tty, int break_state)  in xr_break_ctl()  argument
510 	struct usb_serial_port *port = tty->driver_data;  in xr_break_ctl()
561 static int xr21v141x_set_baudrate(struct tty_struct *tty, struct usb_serial_port *port)  in xr21v141x_set_baudrate()  argument
567 	baud = tty->termios.c_ospeed;  in xr21v141x_set_baudrate()
622 	tty_encode_baud_rate(tty, baud, baud);  in xr21v141x_set_baudrate()
627 static void xr_set_flow_mode(struct tty_struct *tty,  in xr_set_flow_mode()  argument
661 	if (C_CRTSCTS(tty) && C_BAUD(tty) != B0 && !rs485_enabled) {  in xr_set_flow_mode()
665 	} else if (I_IXON(tty)) {  in xr_set_flow_mode()
666 		u8 start_char = START_CHAR(tty);  in xr_set_flow_mode()
667 		u8 stop_char = STOP_CHAR(tty);  in xr_set_flow_mode()
684 	if (C_BAUD(tty) == B0)  in xr_set_flow_mode()
690 static void xr21v141x_set_line_settings(struct tty_struct *tty,  in xr21v141x_set_line_settings()  argument
694 	struct ktermios *termios = &tty->termios;  in xr21v141x_set_line_settings()
698 	if (!old_termios || (tty->termios.c_ospeed != old_termios->c_ospeed))  in xr21v141x_set_line_settings()
699 		xr21v141x_set_baudrate(tty, port);  in xr21v141x_set_line_settings()
701 	switch (C_CSIZE(tty)) {  in xr21v141x_set_line_settings()
711 		if (C_CSIZE(tty) == CS7)  in xr21v141x_set_line_settings()
725 	if (C_PARENB(tty)) {  in xr21v141x_set_line_settings()
726 		if (C_CMSPAR(tty)) {  in xr21v141x_set_line_settings()
727 			if (C_PARODD(tty))  in xr21v141x_set_line_settings()
732 			if (C_PARODD(tty))  in xr21v141x_set_line_settings()
739 	if (C_CSTOPB(tty))  in xr21v141x_set_line_settings()
749 static void xr_cdc_set_line_coding(struct tty_struct *tty,  in xr_cdc_set_line_coding()  argument
763 	if (tty->termios.c_ospeed)  in xr_cdc_set_line_coding()
764 		lc->dwDTERate = cpu_to_le32(tty->termios.c_ospeed);  in xr_cdc_set_line_coding()
768 	if (C_CSTOPB(tty))  in xr_cdc_set_line_coding()
773 	if (C_PARENB(tty)) {  in xr_cdc_set_line_coding()
774 		if (C_CMSPAR(tty)) {  in xr_cdc_set_line_coding()
775 			if (C_PARODD(tty))  in xr_cdc_set_line_coding()
780 			if (C_PARODD(tty))  in xr_cdc_set_line_coding()
790 			(C_CSIZE(tty) == CS5 || C_CSIZE(tty) == CS6)) {  in xr_cdc_set_line_coding()
791 		tty->termios.c_cflag &= ~CSIZE;  in xr_cdc_set_line_coding()
793 			tty->termios.c_cflag |= old_termios->c_cflag & CSIZE;  in xr_cdc_set_line_coding()
795 			tty->termios.c_cflag |= CS8;  in xr_cdc_set_line_coding()
798 	switch (C_CSIZE(tty)) {  in xr_cdc_set_line_coding()
846 static int xr_get_rs485_config(struct tty_struct *tty,  in xr_get_rs485_config()  argument
849 	struct usb_serial_port *port = tty->driver_data;  in xr_get_rs485_config()
852 	down_read(&tty->termios_rwsem);  in xr_get_rs485_config()
854 		up_read(&tty->termios_rwsem);  in xr_get_rs485_config()
857 	up_read(&tty->termios_rwsem);  in xr_get_rs485_config()
862 static int xr_set_rs485_config(struct tty_struct *tty,  in xr_set_rs485_config()  argument
865 	struct usb_serial_port *port = tty->driver_data;  in xr_set_rs485_config()
873 	down_write(&tty->termios_rwsem);  in xr_set_rs485_config()
875 	xr_set_flow_mode(tty, port, NULL);  in xr_set_rs485_config()
876 	up_write(&tty->termios_rwsem);  in xr_set_rs485_config()
884 static int xr_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)  in xr_ioctl()  argument
890 		return xr_get_rs485_config(tty, argp);  in xr_ioctl()
892 		return xr_set_rs485_config(tty, argp);  in xr_ioctl()
898 static void xr_set_termios(struct tty_struct *tty,  in xr_set_termios()  argument
909 		data->type->set_line_settings(tty, port, old_termios);  in xr_set_termios()
911 		xr_cdc_set_line_coding(tty, port, old_termios);  in xr_set_termios()
913 	xr_set_flow_mode(tty, port, old_termios);  in xr_set_termios()
916 static int xr_open(struct tty_struct *tty, struct usb_serial_port *port)  in xr_open()  argument
931 	if (tty)  in xr_open()
932 		xr_set_termios(tty, port, NULL);  in xr_open()
934 	ret = usb_serial_generic_open(tty, port);  in xr_open()