91 static int ti_port_probe(struct usb_serial_port *port);
92 static int ti_port_remove(struct usb_serial_port *port);
93 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port);
94 static void ti_close(struct usb_serial_port *port);
95 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,
99 static bool ti_tx_empty(struct usb_serial_port *port);
105 		struct usb_serial_port *port, struct ktermios *old_termios);
114 static void ti_recv(struct usb_serial_port *port, unsigned char *data,
133 static int ti_write_byte(struct usb_serial_port *port, struct ti_device *tdev,
358 static int ti_port_probe(struct usb_serial_port *port)  in ti_port_probe()  argument
367 	if (port == port->serial->port[0])  in ti_port_probe()
371 	port->port.closing_wait = msecs_to_jiffies(10 * closing_wait);  in ti_port_probe()
372 	tport->tp_port = port;  in ti_port_probe()
373 	tport->tp_tdev = usb_get_serial_data(port->serial);  in ti_port_probe()
376 	usb_set_serial_port_data(port, tport);  in ti_port_probe()
378 	port->port.drain_delay = 3;  in ti_port_probe()
383 static int ti_port_remove(struct usb_serial_port *port)  in ti_port_remove()  argument
387 	tport = usb_get_serial_port_data(port);  in ti_port_remove()
393 static int ti_open(struct tty_struct *tty, struct usb_serial_port *port)  in ti_open()  argument
395 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_open()
408 	dev = port->serial->dev;  in ti_open()
415 	port_number = port->port_number;  in ti_open()
422 		dev_dbg(&port->dev, "%s - start interrupt in urb\n", __func__);  in ti_open()
423 		urb = tdev->td_serial->port[0]->interrupt_in_urb;  in ti_open()
425 			dev_err(&port->dev, "%s - no interrupt urb\n", __func__);  in ti_open()
432 			dev_err(&port->dev, "%s - submit interrupt urb failed, %d\n", __func__, status);  in ti_open()
438 		ti_set_termios(tty, port, &tty->termios);  in ti_open()
440 	dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT\n", __func__);  in ti_open()
444 		dev_err(&port->dev, "%s - cannot send open command, %d\n",  in ti_open()
449 	dev_dbg(&port->dev, "%s - sending TI_START_PORT\n", __func__);  in ti_open()
453 		dev_err(&port->dev, "%s - cannot send start command, %d\n",  in ti_open()
458 	dev_dbg(&port->dev, "%s - sending TI_PURGE_PORT\n", __func__);  in ti_open()
462 		dev_err(&port->dev, "%s - cannot clear input buffers, %d\n",  in ti_open()
469 		dev_err(&port->dev, "%s - cannot clear output buffers, %d\n",  in ti_open()
476 	usb_clear_halt(dev, port->write_urb->pipe);  in ti_open()
477 	usb_clear_halt(dev, port->read_urb->pipe);  in ti_open()
480 		ti_set_termios(tty, port, &tty->termios);  in ti_open()
482 	dev_dbg(&port->dev, "%s - sending TI_OPEN_PORT (2)\n", __func__);  in ti_open()
486 		dev_err(&port->dev, "%s - cannot send open command (2), %d\n",  in ti_open()
491 	dev_dbg(&port->dev, "%s - sending TI_START_PORT (2)\n", __func__);  in ti_open()
495 		dev_err(&port->dev, "%s - cannot send start command (2), %d\n",  in ti_open()
501 	dev_dbg(&port->dev, "%s - start read urb\n", __func__);  in ti_open()
502 	urb = port->read_urb;  in ti_open()
504 		dev_err(&port->dev, "%s - no read urb\n", __func__);  in ti_open()
512 		dev_err(&port->dev, "%s - submit read urb failed, %d\n",  in ti_open()
524 		usb_kill_urb(port->serial->port[0]->interrupt_in_urb);  in ti_open()
527 	dev_dbg(&port->dev, "%s - exit %d\n", __func__, status);  in ti_open()
532 static void ti_close(struct usb_serial_port *port)  in ti_close()  argument
541 	tdev = usb_get_serial_data(port->serial);  in ti_close()
542 	tport = usb_get_serial_port_data(port);  in ti_close()
548 	usb_kill_urb(port->read_urb);  in ti_close()
549 	usb_kill_urb(port->write_urb);  in ti_close()
552 	kfifo_reset_out(&port->write_fifo);  in ti_close()
555 	port_number = port->port_number;  in ti_close()
557 	dev_dbg(&port->dev, "%s - sending TI_CLOSE_PORT\n", __func__);  in ti_close()
561 		dev_err(&port->dev,  in ti_close()
570 		usb_kill_urb(port->serial->port[0]->interrupt_in_urb);  in ti_close()
578 static int ti_write(struct tty_struct *tty, struct usb_serial_port *port,  in ti_write()  argument
581 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write()
584 		dev_dbg(&port->dev, "%s - write request of 0 bytes\n", __func__);  in ti_write()
591 	count = kfifo_in_locked(&port->write_fifo, data, count,  in ti_write()
601 	struct usb_serial_port *port = tty->driver_data;  in ti_write_room()  local
602 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write_room()
610 	room = kfifo_avail(&port->write_fifo);  in ti_write_room()
613 	dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);  in ti_write_room()
620 	struct usb_serial_port *port = tty->driver_data;  in ti_chars_in_buffer()  local
621 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_chars_in_buffer()
629 	chars = kfifo_len(&port->write_fifo);  in ti_chars_in_buffer()
632 	dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);  in ti_chars_in_buffer()
636 static bool ti_tx_empty(struct usb_serial_port *port)  in ti_tx_empty()  argument
638 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tx_empty()
651 	struct usb_serial_port *port = tty->driver_data;  in ti_throttle()  local
652 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_throttle()
665 	struct usb_serial_port *port = tty->driver_data;  in ti_unthrottle()  local
666 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_unthrottle()
675 			dev_err(&port->dev, "%s - cannot restart read, %d\n",  in ti_unthrottle()
683 	struct usb_serial_port *port = tty->driver_data;  in ti_ioctl()  local
684 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_ioctl()
691 		dev_dbg(&port->dev, "%s - TIOCGSERIAL\n", __func__);  in ti_ioctl()
695 		dev_dbg(&port->dev, "%s - TIOCSSERIAL\n", __func__);  in ti_ioctl()
704 		struct usb_serial_port *port, struct ktermios *old_termios)  in ti_set_termios()  argument
706 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_set_termios()
711 	int port_number = port->port_number;  in ti_set_termios()
717 	dev_dbg(&port->dev, "%s - cflag %08x, iflag %08x\n", __func__, cflag, iflag);  in ti_set_termios()
718 	dev_dbg(&port->dev, "%s - old clfag %08x, old iflag %08x\n", __func__,  in ti_set_termios()
806 	dev_dbg(&port->dev,  in ti_set_termios()
819 		dev_err(&port->dev, "%s - cannot set config on port %d, %d\n",  in ti_set_termios()
829 		dev_err(&port->dev,  in ti_set_termios()
839 	struct usb_serial_port *port = tty->driver_data;  in ti_tiocmget()  local
840 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmget()
862 	dev_dbg(&port->dev, "%s - 0x%04X\n", __func__, result);  in ti_tiocmget()
871 	struct usb_serial_port *port = tty->driver_data;  in ti_tiocmset()  local
872 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmset()
903 	struct usb_serial_port *port = tty->driver_data;  in ti_break()  local
904 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_break()
907 	dev_dbg(&port->dev, "%s - state = %d\n", __func__, break_state);  in ti_break()
912 	status = ti_write_byte(port, tport->tp_tdev,  in ti_break()
917 		dev_dbg(&port->dev, "%s - error setting break, %d\n", __func__, status);  in ti_break()
924 	struct usb_serial_port *port;  in ti_interrupt_callback()  local
973 	port = serial->port[port_number];  in ti_interrupt_callback()
975 	tport = usb_get_serial_port_data(port);  in ti_interrupt_callback()
1008 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_in_callback()  local
1044 			ti_recv(port, urb->transfer_buffer, urb->actual_length);  in ti_bulk_in_callback()
1046 		port->icount.rx += urb->actual_length;  in ti_bulk_in_callback()
1068 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_out_callback()  local
1079 		dev_dbg(&port->dev, "%s - urb shutting down, %d\n", __func__, status);  in ti_bulk_out_callback()
1083 		dev_err_console(port, "%s - nonzero urb status, %d\n",  in ti_bulk_out_callback()
1093 static void ti_recv(struct usb_serial_port *port, unsigned char *data,  in ti_recv()  argument
1099 		cnt = tty_insert_flip_string(&port->port, data, length);  in ti_recv()
1101 			dev_err(&port->dev, "%s - dropping data, %d bytes lost\n",  in ti_recv()
1106 		tty_flip_buffer_push(&port->port);  in ti_recv()
1116 	struct usb_serial_port *port = tport->tp_port;  in ti_send()  local
1124 	count = kfifo_out(&port->write_fifo,  in ti_send()
1125 				port->write_urb->transfer_buffer,  in ti_send()
1126 				port->bulk_out_size);  in ti_send()
1135 	usb_serial_debug_data(&port->dev, __func__, count,  in ti_send()
1136 			      port->write_urb->transfer_buffer);  in ti_send()
1138 	usb_fill_bulk_urb(port->write_urb, port->serial->dev,  in ti_send()
1139 			   usb_sndbulkpipe(port->serial->dev,  in ti_send()
1140 					    port->bulk_out_endpointAddress),  in ti_send()
1141 			   port->write_urb->transfer_buffer, count,  in ti_send()
1144 	result = usb_submit_urb(port->write_urb, GFP_ATOMIC);  in ti_send()
1146 		dev_err_console(port, "%s - submit write urb failed, %d\n",  in ti_send()
1152 		port->icount.tx += count;  in ti_send()
1157 	tty_port_tty_wakeup(&port->port);  in ti_send()
1188 	struct usb_serial_port *port = tport->tp_port;  in ti_get_lsr()  local
1189 	int port_number = port->port_number;  in ti_get_lsr()
1200 		dev_err(&port->dev,  in ti_get_lsr()
1206 	dev_dbg(&port->dev, "%s - lsr 0x%02X\n", __func__, data->bLSR);  in ti_get_lsr()
1219 	struct usb_serial_port *port = tport->tp_port;  in ti_get_serial_info()  local
1226 	cwait = port->port.closing_wait;  in ti_get_serial_info()
1233 	ret_serial.line = port->minor;  in ti_get_serial_info()
1234 	ret_serial.port = port->port_number;  in ti_get_serial_info()
1236 	ret_serial.xmit_fifo_size = kfifo_size(&port->write_fifo);  in ti_get_serial_info()
1261 	tport->tp_port->port.closing_wait = cwait;  in ti_set_serial_info()
1286 		wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);  in ti_handle_new_msr()
1293 	tty = tty_port_tty_get(&tport->tp_port->port);  in ti_handle_new_msr()
1378 static int ti_write_byte(struct usb_serial_port *port,  in ti_write_byte()  argument
1386 	dev_dbg(&port->dev, "%s - addr 0x%08lX, mask 0x%02X, byte 0x%02X\n", __func__,  in ti_write_byte()
1406 		dev_err(&port->dev, "%s - failed, %d\n", __func__, status);  in ti_write_byte()
1449 		tdev->td_serial->port[0]->bulk_out_endpointAddress);  in ti_download_firmware()