116 static void ti_send(struct ti_port *tport);
117 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr);
118 static int ti_get_lsr(struct ti_port *tport, u8 *lsr);
119 static int ti_get_serial_info(struct ti_port *tport,
121 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,
123 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr);
125 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty);
126 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty);
360 	struct ti_port *tport;  in ti_port_probe()  local
362 	tport = kzalloc(sizeof(*tport), GFP_KERNEL);  in ti_port_probe()
363 	if (!tport)  in ti_port_probe()
366 	spin_lock_init(&tport->tp_lock);  in ti_port_probe()
368 		tport->tp_uart_base_addr = TI_UART1_BASE_ADDR;  in ti_port_probe()
370 		tport->tp_uart_base_addr = TI_UART2_BASE_ADDR;  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()
374 	tport->tp_uart_mode = 0;	/* default is RS232 */  in ti_port_probe()
376 	usb_set_serial_port_data(port, tport);  in ti_port_probe()
385 	struct ti_port *tport;  in ti_port_remove()  local
387 	tport = usb_get_serial_port_data(port);  in ti_port_remove()
388 	kfree(tport);  in ti_port_remove()
395 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_open()  local
405 	if (tport == NULL)  in ti_open()
409 	tdev = tport->tp_tdev;  in ti_open()
417 	tport->tp_msr = 0;  in ti_open()
418 	tport->tp_shadow_mcr |= (TI_MCR_RTS | TI_MCR_DTR);  in ti_open()
508 	tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_open()
509 	urb->context = tport;  in ti_open()
517 	tport->tp_is_open = 1;  in ti_open()
535 	struct ti_port *tport;  in ti_close()  local
542 	tport = usb_get_serial_port_data(port);  in ti_close()
543 	if (tdev == NULL || tport == NULL)  in ti_close()
546 	tport->tp_is_open = 0;  in ti_close()
550 	tport->tp_write_urb_in_use = 0;  in ti_close()
551 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_close()
553 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_close()
567 	--tport->tp_tdev->td_open_port_count;  in ti_close()
568 	if (tport->tp_tdev->td_open_port_count <= 0) {  in ti_close()
571 		tport->tp_tdev->td_open_port_count = 0;  in ti_close()
581 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write()  local
588 	if (tport == NULL || !tport->tp_is_open)  in ti_write()
592 							&tport->tp_lock);  in ti_write()
593 	ti_send(tport);  in ti_write()
602 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_write_room()  local
606 	if (tport == NULL)  in ti_write_room()
609 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_write_room()
611 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_write_room()
621 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_chars_in_buffer()  local
625 	if (tport == NULL)  in ti_chars_in_buffer()
628 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_chars_in_buffer()
630 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_chars_in_buffer()
638 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tx_empty()  local
642 	ret = ti_get_lsr(tport, &lsr);  in ti_tx_empty()
652 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_throttle()  local
654 	if (tport == NULL)  in ti_throttle()
658 		ti_stop_read(tport, tty);  in ti_throttle()
666 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_unthrottle()  local
669 	if (tport == NULL)  in ti_unthrottle()
673 		status = ti_restart_read(tport, tty);  in ti_unthrottle()
684 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_ioctl()  local
686 	if (tport == NULL)  in ti_ioctl()
692 		return ti_get_serial_info(tport,  in ti_ioctl()
696 		return ti_set_serial_info(tty, tport,  in ti_ioctl()
706 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_set_termios()  local
721 	if (tport == NULL)  in ti_set_termios()
733 	config->bUartMode = (__u8)(tport->tp_uart_mode);  in ti_set_termios()
778 		ti_restart_read(tport, tty);  in ti_set_termios()
788 			ti_restart_read(tport, tty);  in ti_set_termios()
797 	if (tport->tp_tdev->td_is_3410)  in ti_set_termios()
815 	status = ti_command_out_sync(tport->tp_tdev, TI_SET_CONFIG,  in ti_set_termios()
823 	mcr = tport->tp_shadow_mcr;  in ti_set_termios()
827 	status = ti_set_mcr(tport, mcr);  in ti_set_termios()
840 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmget()  local
846 	if (tport == NULL)  in ti_tiocmget()
849 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_tiocmget()
850 	msr = tport->tp_msr;  in ti_tiocmget()
851 	mcr = tport->tp_shadow_mcr;  in ti_tiocmget()
852 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_tiocmget()
872 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_tiocmset()  local
876 	if (tport == NULL)  in ti_tiocmset()
879 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_tiocmset()
880 	mcr = tport->tp_shadow_mcr;  in ti_tiocmset()
895 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_tiocmset()
897 	return ti_set_mcr(tport, mcr);  in ti_tiocmset()
904 	struct ti_port *tport = usb_get_serial_port_data(port);  in ti_break()  local
909 	if (tport == NULL)  in ti_break()
912 	status = ti_write_byte(port, tport->tp_tdev,  in ti_break()
913 		tport->tp_uart_base_addr + TI_UART_OFFSET_LCR,  in ti_break()
926 	struct ti_port *tport;  in ti_interrupt_callback()  local
975 	tport = usb_get_serial_port_data(port);  in ti_interrupt_callback()
976 	if (!tport)  in ti_interrupt_callback()
988 		ti_handle_new_msr(tport, msr);  in ti_interrupt_callback()
1007 	struct ti_port *tport = urb->context;  in ti_bulk_in_callback()  local
1008 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_in_callback()
1020 		tport->tp_tdev->td_urb_error = 1;  in ti_bulk_in_callback()
1025 		tport->tp_tdev->td_urb_error = 1;  in ti_bulk_in_callback()
1040 		if (!tport->tp_is_open)  in ti_bulk_in_callback()
1045 		spin_lock(&tport->tp_lock);  in ti_bulk_in_callback()
1047 		spin_unlock(&tport->tp_lock);  in ti_bulk_in_callback()
1052 	spin_lock(&tport->tp_lock);  in ti_bulk_in_callback()
1053 	if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)  in ti_bulk_in_callback()
1055 	else if (tport->tp_read_urb_state == TI_READ_URB_STOPPING)  in ti_bulk_in_callback()
1056 		tport->tp_read_urb_state = TI_READ_URB_STOPPED;  in ti_bulk_in_callback()
1058 	spin_unlock(&tport->tp_lock);  in ti_bulk_in_callback()
1067 	struct ti_port *tport = urb->context;  in ti_bulk_out_callback()  local
1068 	struct usb_serial_port *port = tport->tp_port;  in ti_bulk_out_callback()
1071 	tport->tp_write_urb_in_use = 0;  in ti_bulk_out_callback()
1080 		tport->tp_tdev->td_urb_error = 1;  in ti_bulk_out_callback()
1085 		tport->tp_tdev->td_urb_error = 1;  in ti_bulk_out_callback()
1089 	ti_send(tport);  in ti_bulk_out_callback()
1113 static void ti_send(struct ti_port *tport)  in ti_send()  argument
1116 	struct usb_serial_port *port = tport->tp_port;  in ti_send()
1119 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_send()
1121 	if (tport->tp_write_urb_in_use)  in ti_send()
1131 	tport->tp_write_urb_in_use = 1;  in ti_send()
1133 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1142 			   ti_bulk_out_callback, tport);  in ti_send()
1148 		tport->tp_write_urb_in_use = 0;  in ti_send()
1151 		spin_lock_irqsave(&tport->tp_lock, flags);  in ti_send()
1153 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1161 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_send()
1166 static int ti_set_mcr(struct ti_port *tport, unsigned int mcr)  in ti_set_mcr()  argument
1171 	status = ti_write_byte(tport->tp_port, tport->tp_tdev,  in ti_set_mcr()
1172 		tport->tp_uart_base_addr + TI_UART_OFFSET_MCR,  in ti_set_mcr()
1175 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_set_mcr()
1177 		tport->tp_shadow_mcr = mcr;  in ti_set_mcr()
1178 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_set_mcr()
1184 static int ti_get_lsr(struct ti_port *tport, u8 *lsr)  in ti_get_lsr()  argument
1187 	struct ti_device *tdev = tport->tp_tdev;  in ti_get_lsr()
1188 	struct usb_serial_port *port = tport->tp_port;  in ti_get_lsr()
1216 static int ti_get_serial_info(struct ti_port *tport,  in ti_get_serial_info()  argument
1219 	struct usb_serial_port *port = tport->tp_port;  in ti_get_serial_info()
1235 	ret_serial.flags = tport->tp_flags;  in ti_get_serial_info()
1237 	ret_serial.baud_base = tport->tp_tdev->td_is_3410 ? 921600 : 460800;  in ti_get_serial_info()
1247 static int ti_set_serial_info(struct tty_struct *tty, struct ti_port *tport,  in ti_set_serial_info()  argument
1260 	tport->tp_flags = new_serial.flags & TI_SET_SERIAL_FLAGS;  in ti_set_serial_info()
1261 	tport->tp_port->port.closing_wait = cwait;  in ti_set_serial_info()
1267 static void ti_handle_new_msr(struct ti_port *tport, __u8 msr)  in ti_handle_new_msr()  argument
1273 	dev_dbg(&tport->tp_port->dev, "%s - msr 0x%02X\n", __func__, msr);  in ti_handle_new_msr()
1276 		spin_lock_irqsave(&tport->tp_lock, flags);  in ti_handle_new_msr()
1277 		icount = &tport->tp_port->icount;  in ti_handle_new_msr()
1286 		wake_up_interruptible(&tport->tp_port->port.delta_msr_wait);  in ti_handle_new_msr()
1287 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_handle_new_msr()
1290 	tport->tp_msr = msr & TI_MSR_MASK;  in ti_handle_new_msr()
1293 	tty = tty_port_tty_get(&tport->tp_port->port);  in ti_handle_new_msr()
1302 static void ti_stop_read(struct ti_port *tport, struct tty_struct *tty)  in ti_stop_read()  argument
1306 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_stop_read()
1308 	if (tport->tp_read_urb_state == TI_READ_URB_RUNNING)  in ti_stop_read()
1309 		tport->tp_read_urb_state = TI_READ_URB_STOPPING;  in ti_stop_read()
1311 	spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_stop_read()
1315 static int ti_restart_read(struct ti_port *tport, struct tty_struct *tty)  in ti_restart_read()  argument
1321 	spin_lock_irqsave(&tport->tp_lock, flags);  in ti_restart_read()
1323 	if (tport->tp_read_urb_state == TI_READ_URB_STOPPED) {  in ti_restart_read()
1324 		tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_restart_read()
1325 		urb = tport->tp_port->read_urb;  in ti_restart_read()
1326 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_restart_read()
1327 		urb->context = tport;  in ti_restart_read()
1330 		tport->tp_read_urb_state = TI_READ_URB_RUNNING;  in ti_restart_read()
1331 		spin_unlock_irqrestore(&tport->tp_lock, flags);  in ti_restart_read()