185 	if (old != port->mctrl && !(port->rs485.flags & SER_RS485_ENABLED))  in uart_update_mctrl()
1304 static int uart_check_rs485_flags(struct uart_port *port, struct serial_rs485 *rs485)  in uart_check_rs485_flags()  argument
1306 	u32 flags = rs485->flags;  in uart_check_rs485_flags()
1319 	if (!(rs485->flags & SER_RS485_ADDRB) &&  in uart_check_rs485_flags()
1320 	    (rs485->flags & (SER_RS485_ADDR_RECV|SER_RS485_ADDR_DEST)))  in uart_check_rs485_flags()
1324 	if (!(rs485->flags & SER_RS485_ADDR_RECV) && rs485->addr_recv)  in uart_check_rs485_flags()
1326 	if (!(rs485->flags & SER_RS485_ADDR_DEST) && rs485->addr_dest)  in uart_check_rs485_flags()
1333 					      struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485_delays()  argument
1336 		if (rs485->delay_rts_before_send) {  in uart_sanitize_serial_rs485_delays()
1341 		rs485->delay_rts_before_send = 0;  in uart_sanitize_serial_rs485_delays()
1342 	} else if (rs485->delay_rts_before_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1343 		rs485->delay_rts_before_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1346 			port->name, port->line, rs485->delay_rts_before_send);  in uart_sanitize_serial_rs485_delays()
1350 		if (rs485->delay_rts_after_send) {  in uart_sanitize_serial_rs485_delays()
1355 		rs485->delay_rts_after_send = 0;  in uart_sanitize_serial_rs485_delays()
1356 	} else if (rs485->delay_rts_after_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1357 		rs485->delay_rts_after_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1360 			port->name, port->line, rs485->delay_rts_after_send);  in uart_sanitize_serial_rs485_delays()
1364 static void uart_sanitize_serial_rs485(struct uart_port *port, struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485()  argument
1368 	if (!(rs485->flags & SER_RS485_ENABLED)) {  in uart_sanitize_serial_rs485()
1369 		memset(rs485, 0, sizeof(*rs485));  in uart_sanitize_serial_rs485()
1375 	    !(rs485->flags & SER_RS485_RTS_ON_SEND) ==  in uart_sanitize_serial_rs485()
1376 	    !(rs485->flags & SER_RS485_RTS_AFTER_SEND)) {  in uart_sanitize_serial_rs485()
1380 		rs485->flags |= SER_RS485_RTS_ON_SEND;  in uart_sanitize_serial_rs485()
1381 		rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;  in uart_sanitize_serial_rs485()
1385 	rs485->flags &= supported_flags;  in uart_sanitize_serial_rs485()
1387 	uart_sanitize_serial_rs485_delays(port, rs485);  in uart_sanitize_serial_rs485()
1390 	memset(rs485->padding0, 0, sizeof(rs485->padding0));  in uart_sanitize_serial_rs485()
1391 	memset(rs485->padding1, 0, sizeof(rs485->padding1));  in uart_sanitize_serial_rs485()
1395 				       const struct serial_rs485 *rs485)  in uart_set_rs485_termination()  argument
1397 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_set_rs485_termination()
1401 				 !!(rs485->flags & SER_RS485_TERMINATE_BUS));  in uart_set_rs485_termination()
1406 	struct serial_rs485 *rs485 = &port->rs485;  in uart_rs485_config()  local
1410 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_rs485_config()
1413 	uart_sanitize_serial_rs485(port, rs485);  in uart_rs485_config()
1414 	uart_set_rs485_termination(port, rs485);  in uart_rs485_config()
1417 	ret = port->rs485_config(port, NULL, rs485);  in uart_rs485_config()
1420 		memset(rs485, 0, sizeof(*rs485));  in uart_rs485_config()
1426 			 struct serial_rs485 __user *rs485)  in uart_get_rs485_config()  argument
1432 	aux = port->rs485;  in uart_get_rs485_config()
1435 	if (copy_to_user(rs485, &aux, sizeof(aux)))  in uart_get_rs485_config()
1444 	struct serial_rs485 rs485;  in uart_set_rs485_config()  local
1451 	if (copy_from_user(&rs485, rs485_user, sizeof(*rs485_user)))  in uart_set_rs485_config()
1454 	ret = uart_check_rs485_flags(port, &rs485);  in uart_set_rs485_config()
1457 	uart_sanitize_serial_rs485(port, &rs485);  in uart_set_rs485_config()
1458 	uart_set_rs485_termination(port, &rs485);  in uart_set_rs485_config()
1461 	ret = port->rs485_config(port, &tty->termios, &rs485);  in uart_set_rs485_config()
1463 		port->rs485 = rs485;  in uart_set_rs485_config()
1465 		/* Reset RTS and other mctrl lines when disabling RS485 */  in uart_set_rs485_config()
1466 		if (!(rs485.flags & SER_RS485_ENABLED))  in uart_set_rs485_config()
1473 	if (copy_to_user(rs485_user, &port->rs485, sizeof(port->rs485)))  in uart_set_rs485_config()
2380 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_suspend_port()
2472 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2485 				if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2593 		if (!(port->rs485.flags & SER_RS485_ENABLED))  in uart_configure_port()
3557  * uart_get_rs485_mode() - retrieve rs485 properties for given uart
3561  * Documentation/devicetree/bindings/serial/rs485.txt.
3565 	struct serial_rs485 *rs485conf = &port->rs485;  in uart_get_rs485_mode()
3571 	ret = device_property_read_u32_array(dev, "rs485-rts-delay",  in uart_get_rs485_mode()
3592 	if (device_property_read_bool(dev, "rs485-rx-during-tx"))  in uart_get_rs485_mode()
3595 	if (device_property_read_bool(dev, "linux,rs485-enabled-at-boot-time"))  in uart_get_rs485_mode()
3598 	if (device_property_read_bool(dev, "rs485-rts-active-low")) {  in uart_get_rs485_mode()
3608 	port->rs485_term_gpio = devm_gpiod_get_optional(dev, "rs485-term",  in uart_get_rs485_mode()
3613 		return dev_err_probe(dev, ret, "Cannot get rs485-term-gpios\n");  in uart_get_rs485_mode()
3621 								"rs485-rx-during-tx",  in uart_get_rs485_mode()
3626 		return dev_err_probe(dev, ret, "Cannot get rs485-rx-during-tx-gpios\n");  in uart_get_rs485_mode()