45 static int  mct_u232_port_probe(struct usb_serial_port *port);
47 static int  mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port);
48 static void mct_u232_close(struct usb_serial_port *port);
49 static void mct_u232_dtr_rts(struct usb_serial_port *port, int on);
52 			struct usb_serial_port *port, struct ktermios *old);
179 	struct usb_serial *serial, struct usb_serial_port *port, speed_t value)  in mct_u232_set_baud_rate()  argument
199 		dev_err(&port->dev, "Set BAUD RATE %d failed (error = %d)\n",  in mct_u232_set_baud_rate()
203 	dev_dbg(&port->dev, "set_baud_rate: value: 0x%x, divisor: 0x%x\n", value, divisor);  in mct_u232_set_baud_rate()
229 		dev_err(&port->dev, "Sending USB device request code %d "  in mct_u232_set_baud_rate()
233 	if (port && C_CRTSCTS(tty))  in mct_u232_set_baud_rate()
236 	dev_dbg(&port->dev, "set_baud_rate: send second control message, data = %02X\n",  in mct_u232_set_baud_rate()
245 		dev_err(&port->dev, "Sending USB device request code %d "  in mct_u232_set_baud_rate()
252 static int mct_u232_set_line_ctrl(struct usb_serial_port *port,  in mct_u232_set_line_ctrl()  argument
263 	rc = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),  in mct_u232_set_line_ctrl()
269 		dev_err(&port->dev, "Set LINE CTRL 0x%x failed (error = %d)\n", lcr, rc);  in mct_u232_set_line_ctrl()
270 	dev_dbg(&port->dev, "set_line_ctrl: 0x%x\n", lcr);  in mct_u232_set_line_ctrl()
275 static int mct_u232_set_modem_ctrl(struct usb_serial_port *port,  in mct_u232_set_modem_ctrl()  argument
293 	rc = usb_control_msg(port->serial->dev, usb_sndctrlpipe(port->serial->dev, 0),  in mct_u232_set_modem_ctrl()
300 	dev_dbg(&port->dev, "set_modem_ctrl: state=0x%x ==> mcr=0x%x\n", control_state, mcr);  in mct_u232_set_modem_ctrl()
303 		dev_err(&port->dev, "Set MODEM CTRL 0x%x failed (error = %d)\n", mcr, rc);  in mct_u232_set_modem_ctrl()
309 static int mct_u232_get_modem_stat(struct usb_serial_port *port,  in mct_u232_get_modem_stat()  argument
320 	rc = usb_control_msg(port->serial->dev, usb_rcvctrlpipe(port->serial->dev, 0),  in mct_u232_get_modem_stat()
326 		dev_err(&port->dev, "Get MODEM STATus failed (error = %d)\n", rc);  in mct_u232_get_modem_stat()
331 	dev_dbg(&port->dev, "get_modem_stat: 0x%x\n", *msr);  in mct_u232_get_modem_stat()
350 static void mct_u232_msr_to_state(struct usb_serial_port *port,  in mct_u232_msr_to_state()  argument
370 	dev_dbg(&port->dev, "msr_to_state: msr=0x%x ==> state=0x%x\n", msr, *control_state);  in mct_u232_msr_to_state()
377 static int mct_u232_port_probe(struct usb_serial_port *port)  in mct_u232_port_probe()  argument
379 	struct usb_serial *serial = port->serial;  in mct_u232_port_probe()
383 	if (!serial->port[1] || !serial->port[1]->interrupt_in_urb) {  in mct_u232_port_probe()
384 		dev_err(&port->dev, "expected endpoint missing\n");  in mct_u232_port_probe()
393 	priv->read_urb = serial->port[1]->interrupt_in_urb;  in mct_u232_port_probe()
394 	priv->read_urb->context = port;  in mct_u232_port_probe()
398 	usb_set_serial_port_data(port, priv);  in mct_u232_port_probe()
403 static int mct_u232_port_remove(struct usb_serial_port *port)  in mct_u232_port_remove()  argument
407 	priv = usb_get_serial_port_data(port);  in mct_u232_port_remove()
413 static int  mct_u232_open(struct tty_struct *tty, struct usb_serial_port *port)  in mct_u232_open()  argument
415 	struct usb_serial *serial = port->serial;  in mct_u232_open()
416 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_open()
430 		port->bulk_out_size = 16;  in mct_u232_open()
449 	mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_open()
450 	mct_u232_set_line_ctrl(port, last_lcr);  in mct_u232_open()
453 	mct_u232_get_modem_stat(port, &last_msr);  in mct_u232_open()
456 	mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);  in mct_u232_open()
461 		dev_err(&port->dev,  in mct_u232_open()
463 			port->read_urb->pipe, retval);  in mct_u232_open()
467 	retval = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);  in mct_u232_open()
470 		dev_err(&port->dev,  in mct_u232_open()
472 			port->interrupt_in_urb->pipe, retval);  in mct_u232_open()
481 static void mct_u232_dtr_rts(struct usb_serial_port *port, int on)  in mct_u232_dtr_rts()  argument
484 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_dtr_rts()
494 	mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_dtr_rts()
497 static void mct_u232_close(struct usb_serial_port *port)  in mct_u232_close()  argument
499 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_close()
502 	usb_kill_urb(port->interrupt_in_urb);  in mct_u232_close()
504 	usb_serial_generic_close(port);  in mct_u232_close()
510 	struct usb_serial_port *port = urb->context;  in mct_u232_read_int_callback()  local
511 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_read_int_callback()
525 		dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",  in mct_u232_read_int_callback()
529 		dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",  in mct_u232_read_int_callback()
534 	usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);  in mct_u232_read_int_callback()
541 			tty_insert_flip_string(&port->port, data,  in mct_u232_read_int_callback()
543 			tty_flip_buffer_push(&port->port);  in mct_u232_read_int_callback()
556 	mct_u232_msr_to_state(port, &priv->control_state, priv->last_msr);  in mct_u232_read_int_callback()
558 	mct_u232_msr_to_icount(&port->icount, priv->last_msr);  in mct_u232_read_int_callback()
570 		tty = tty_port_tty_get(&port->port);  in mct_u232_read_int_callback()
586 	wake_up_interruptible(&port->port.delta_msr_wait);  in mct_u232_read_int_callback()
591 		dev_err(&port->dev,  in mct_u232_read_int_callback()
597 				 struct usb_serial_port *port,  in mct_u232_set_termios()  argument
600 	struct usb_serial *serial = port->serial;  in mct_u232_set_termios()
601 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_set_termios()
624 		dev_dbg(&port->dev, "%s: baud was B0\n", __func__);  in mct_u232_set_termios()
626 		mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_set_termios()
629 	mct_u232_set_baud_rate(tty, serial, port, tty_get_baud_rate(tty));  in mct_u232_set_termios()
632 		dev_dbg(&port->dev, "%s: baud is B0\n", __func__);  in mct_u232_set_termios()
635 		mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_set_termios()
660 		dev_err(&port->dev,  in mct_u232_set_termios()
672 	mct_u232_set_line_ctrl(port, last_lcr);  in mct_u232_set_termios()
683 	struct usb_serial_port *port = tty->driver_data;  in mct_u232_break_ctl()  local
684 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_break_ctl()
695 	mct_u232_set_line_ctrl(port, lcr);  in mct_u232_break_ctl()
701 	struct usb_serial_port *port = tty->driver_data;  in mct_u232_tiocmget()  local
702 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_tiocmget()
716 	struct usb_serial_port *port = tty->driver_data;  in mct_u232_tiocmset()  local
717 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_tiocmset()
735 	return mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_tiocmset()
740 	struct usb_serial_port *port = tty->driver_data;  in mct_u232_throttle()  local
741 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_throttle()
750 		mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_throttle()
758 	struct usb_serial_port *port = tty->driver_data;  in mct_u232_unthrottle()  local
759 	struct mct_u232_private *priv = usb_get_serial_port_data(port);  in mct_u232_unthrottle()
768 		mct_u232_set_modem_ctrl(port, control_state);  in mct_u232_unthrottle()