108 static int rs_put_char(struct tty_struct *tty, unsigned char ch)  in rs_put_char()  argument
110 	struct serial_state *info = tty->driver_data;  in rs_put_char()
127 static void transmit_chars(struct tty_struct *tty, struct serial_state *info,  in transmit_chars()  argument
145 	if (info->xmit.head == info->xmit.tail || tty->stopped) {  in transmit_chars()
148 		       info->xmit.head, info->xmit.tail, tty->stopped);  in transmit_chars()
178 static void rs_flush_chars(struct tty_struct *tty)  in rs_flush_chars()  argument
180 	struct serial_state *info = tty->driver_data;  in rs_flush_chars()
182 	if (info->xmit.head == info->xmit.tail || tty->stopped ||  in rs_flush_chars()
186 	transmit_chars(tty, info, NULL);  in rs_flush_chars()
189 static int rs_write(struct tty_struct * tty,  in rs_write()  argument
192 	struct serial_state *info = tty->driver_data;  in rs_write()
219 			!tty->stopped)  in rs_write()
220 		transmit_chars(tty, info, NULL);  in rs_write()
225 static int rs_write_room(struct tty_struct *tty)  in rs_write_room()  argument
227 	struct serial_state *info = tty->driver_data;  in rs_write_room()
232 static int rs_chars_in_buffer(struct tty_struct *tty)  in rs_chars_in_buffer()  argument
234 	struct serial_state *info = tty->driver_data;  in rs_chars_in_buffer()
239 static void rs_flush_buffer(struct tty_struct *tty)  in rs_flush_buffer()  argument
241 	struct serial_state *info = tty->driver_data;  in rs_flush_buffer()
248 	tty_wakeup(tty);  in rs_flush_buffer()
255 static void rs_send_xchar(struct tty_struct *tty, char ch)  in rs_send_xchar()  argument
257 	struct serial_state *info = tty->driver_data;  in rs_send_xchar()
265 		transmit_chars(tty, info, NULL);  in rs_send_xchar()
277 static void rs_throttle(struct tty_struct * tty)  in rs_throttle()  argument
279 	if (I_IXOFF(tty))  in rs_throttle()
280 		rs_send_xchar(tty, STOP_CHAR(tty));  in rs_throttle()
285 static void rs_unthrottle(struct tty_struct * tty)  in rs_unthrottle()  argument
287 	struct serial_state *info = tty->driver_data;  in rs_unthrottle()
289 	if (I_IXOFF(tty)) {  in rs_unthrottle()
293 			rs_send_xchar(tty, START_CHAR(tty));  in rs_unthrottle()
298 static int rs_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)  in rs_ioctl()  argument
303 		if (tty->flags & (1 << TTY_IO_ERROR))  in rs_ioctl()
348 static void rs_close(struct tty_struct *tty, struct file * filp)  in rs_close()  argument
350 	struct serial_state *info = tty->driver_data;  in rs_close()
352 	tty_port_close(&info->port, tty, filp);  in rs_close()
355 static void rs_hangup(struct tty_struct *tty)  in rs_hangup()  argument
357 	struct serial_state *info = tty->driver_data;  in rs_hangup()
359 	rs_flush_buffer(tty);  in rs_hangup()
363 static int activate(struct tty_port *port, struct tty_struct *tty)  in activate()  argument
394 		tty->alt_speed = 57600;  in activate()
396 		tty->alt_speed = 115200;  in activate()
398 		tty->alt_speed = 230400;  in activate()
400 		tty->alt_speed = 460800;  in activate()
414 static int rs_open(struct tty_struct *tty, struct file * filp)  in rs_open()  argument
416 	struct serial_state *info = rs_table + tty->index;  in rs_open()
419 	tty->driver_data = info;  in rs_open()
431 	return tty_port_open(port, tty, filp);  in rs_open()