329 static void ti_send(struct ti_port *tport);
330 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
331 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
333 static void ti_handle_new_msr(struct ti_port *tport, u8 msr);
335 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
336 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
601 	struct ti_port *tport;  in ti_port_probe()  local
603 	tport = kzalloc(sizeof(*tport), GFP_KERNEL);  in ti_port_probe()
604 	if (!tport)  in ti_port_probe()
607 	spin_lock_init(&tport->tp_lock);  in ti_port_probe()
609 		tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;  in ti_port_probe()
611 		tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;  in ti_port_probe()
612 	tport->tp_port = port;  in ti_port_probe()
613 	tport->tp_tdev = usb_get_serial_data(port->serial);  in ti_port_probe()
615 	if (tport->tp_tdev->td_rs485_only)  in ti_port_probe()
616 		tport->tp_uart_mode = TI_UART_485_RECEIVER_DISABLED;  in ti_port_probe()
618 		tport->tp_uart_mode = TI_UART_232;  in ti_port_probe()
620 	usb_set_serial_port_data(port, tport);  in ti_port_probe()
626 	if (!tport->tp_tdev->td_is_3410)  in ti_port_probe()
634 	struct ti_port *tport;  in ti_port_remove()  local
636 	tport = usb_get_serial_port_data(port);  in ti_port_remove()
637 	kfree(tport);  in ti_port_remove()
642 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_open()  local
654 	tdev = tport->tp_tdev;  in ti_open()
660 	tport->tp_msr = 0;  in ti_open()
661 	tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);  in ti_open()
739 	tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_open()
740 	urb->context = tport;  in ti_open()
748 	tport->tp_is_open = 1;  in ti_open()
765 	struct ti_port *tport;  in ti_close()  local
770 	tport = usb_get_serial_port_data(port);  in ti_close()
772 	tport->tp_is_open = 0;  in ti_close()
776 	tport->tp_write_urb_in_use = 0;  in ti_close()
777 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_close()
779 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_close()
800 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write()  local
806 	if (!tport->tp_is_open)  in ti_write()
810 							&tport->tp_lock);  in ti_write()
811 	ti_send(tport);  in ti_write()
820 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write_room()  local
824 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_write_room()
826 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_write_room()
836 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_chars_in_buffer()  local
840 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_chars_in_buffer()
842 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_chars_in_buffer()
850 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tx_empty()  local
858 	if (tport->tp_tdev->td_is_3410)  in ti_tx_empty()
863 	ret = ti_get_lsr(tport, &lsr);  in ti_tx_empty()
873 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_throttle()  local
876 		ti_stop_read(tport, tty);  in ti_throttle()
884 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_unthrottle()  local
888 		status = ti_restart_read(tport, tty);  in ti_unthrottle()
899 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_set_termios()  local
914 	config->bUartMode = tport->tp_uart_mode;  in ti_set_termios()
959 		ti_restart_read(tport, tty);  in ti_set_termios()
969 			ti_restart_read(tport, tty);  in ti_set_termios()
978 	if (tport->tp_tdev->td_is_3410)  in ti_set_termios()
1003 	mcr = tport->tp_shadow_mcr;  in ti_set_termios()
1007 	status = ti_set_mcr(tport, mcr);  in ti_set_termios()
1019 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmget()  local
1025 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_tiocmget()
1026 	msr = tport->tp_msr;  in ti_tiocmget()
1027 	mcr = tport->tp_shadow_mcr;  in ti_tiocmget()
1028 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_tiocmget()
1048 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmset()  local
1052 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_tiocmset()
1053 	mcr = tport->tp_shadow_mcr;  in ti_tiocmset()
1068 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_tiocmset()
1070 	return ti_set_mcr(tport, mcr);  in ti_tiocmset()
1077 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_break()  local
1082 	status = ti_write_byte(port, tport->tp_tdev,  in ti_break()
1083 		tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,  in ti_break()
1109 	struct ti_port *tport;  in ti_interrupt_callback()  local
1156 	tport = usb_get_serial_port_data(port);  in ti_interrupt_callback()
1157 	if (!tport)  in ti_interrupt_callback()
1169 		ti_handle_new_msr(tport, msr);  in ti_interrupt_callback()
1188 	struct ti_port *tport = urb->context;  in ti_bulk_in_callback()  local
1189 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_in_callback()
1220 		if (!tport->tp_is_open)  in ti_bulk_in_callback()
1225 		spin_lock_irqsave(&tport->tp_lock, flags);  in ti_bulk_in_callback()
1227 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_bulk_in_callback()
1232 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_bulk_in_callback()
1233 	if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)  in ti_bulk_in_callback()
1235 	else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)  in ti_bulk_in_callback()
1236 		tport->tp_read_urb_state = TI_READ_URB_STOPPED;  in ti_bulk_in_callback()
1238 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_bulk_in_callback()
1247 	struct ti_port *tport = urb->context;  in ti_bulk_out_callback()  local
1248 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_out_callback()
1251 	tport->tp_write_urb_in_use = 0;  in ti_bulk_out_callback()
1267 	ti_send(tport);  in ti_bulk_out_callback()
1291 static void ti_send(struct ti_port *tport)  in ti_send()  argument
1294 	struct usb_serial_port *port = tport->tp_port;  in ti_send()
1297 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_send()
1299 	if (tport->tp_write_urb_in_use)  in ti_send()
1309 	tport->tp_write_urb_in_use = 1;  in ti_send()
1311 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1320 			   ti_bulk_out_callback, tport);  in ti_send()
1326 		tport->tp_write_urb_in_use = 0;  in ti_send()
1329 		spin_lock_irqsave(&tport->tp_lock, flags);  in ti_send()
1331 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1339 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1344 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)  in ti_set_mcr()  argument
1349 	status = ti_write_byte(tport->tp_port, tport->tp_tdev,  in ti_set_mcr()
1350 		tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,  in ti_set_mcr()
1353 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_set_mcr()
1355 		tport->tp_shadow_mcr = mcr;  in ti_set_mcr()
1356 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_set_mcr()
1362 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)  in ti_get_lsr()  argument
1365 	struct usb_serial_port *port = tport->tp_port;  in ti_get_lsr()
1394 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_get_serial_info()  local
1396 	ss->baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;  in ti_get_serial_info()
1400 static void ti_handle_new_msr(struct ti_port *tport, u8 msr)  in ti_handle_new_msr()  argument
1406 	dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);  in ti_handle_new_msr()
1409 		spin_lock_irqsave(&tport->tp_lock, flags);  in ti_handle_new_msr()
1410 		icount = &tport->tp_port->icount;  in ti_handle_new_msr()
1419 		wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);  in ti_handle_new_msr()
1420 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_handle_new_msr()
1423 	tport->tp_msr = msr & TI_MSR_MASK;  in ti_handle_new_msr()
1426 	tty = tty_port_tty_get(&tport->tp_port->port);  in ti_handle_new_msr()
1435 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)  in ti_stop_read()  argument
1439 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_stop_read()
1441 	if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)  in ti_stop_read()
1442 		tport->tp_read_urb_state = TI_READ_URB_STOPPING;  in ti_stop_read()
1444 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_stop_read()
1448 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)  in ti_restart_read()  argument
1454 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_restart_read()
1456 	if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {  in ti_restart_read()
1457 		tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_restart_read()
1458 		urb = tport->tp_port->read_urb;  in ti_restart_read()
1459 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_restart_read()
1460 		urb->context = tport;  in ti_restart_read()
1463 		tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_restart_read()
1464 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_restart_read()