185 	if (old != port->mctrl && !(port->rs485.flags & SER_RS485_ENABLED))  in uart_update_mctrl()
1322 static int uart_check_rs485_flags(struct uart_port *port, struct serial_rs485 *rs485)  in uart_check_rs485_flags()  argument
1324 	u32 flags = rs485->flags;  in uart_check_rs485_flags()
1337 	if (!(rs485->flags & SER_RS485_ADDRB) &&  in uart_check_rs485_flags()
1338 	    (rs485->flags & (SER_RS485_ADDR_RECV|SER_RS485_ADDR_DEST)))  in uart_check_rs485_flags()
1342 	if (!(rs485->flags & SER_RS485_ADDR_RECV) && rs485->addr_recv)  in uart_check_rs485_flags()
1344 	if (!(rs485->flags & SER_RS485_ADDR_DEST) && rs485->addr_dest)  in uart_check_rs485_flags()
1351 					      struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485_delays()  argument
1354 		if (rs485->delay_rts_before_send) {  in uart_sanitize_serial_rs485_delays()
1359 		rs485->delay_rts_before_send = 0;  in uart_sanitize_serial_rs485_delays()
1360 	} else if (rs485->delay_rts_before_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1361 		rs485->delay_rts_before_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1364 			port->name, port->line, rs485->delay_rts_before_send);  in uart_sanitize_serial_rs485_delays()
1368 		if (rs485->delay_rts_after_send) {  in uart_sanitize_serial_rs485_delays()
1373 		rs485->delay_rts_after_send = 0;  in uart_sanitize_serial_rs485_delays()
1374 	} else if (rs485->delay_rts_after_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1375 		rs485->delay_rts_after_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1378 			port->name, port->line, rs485->delay_rts_after_send);  in uart_sanitize_serial_rs485_delays()
1382 static void uart_sanitize_serial_rs485(struct uart_port *port, struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485()  argument
1386 	if (!(rs485->flags & SER_RS485_ENABLED)) {  in uart_sanitize_serial_rs485()
1387 		memset(rs485, 0, sizeof(*rs485));  in uart_sanitize_serial_rs485()
1391 	/* Clear other RS485 flags but SER_RS485_TERMINATE_BUS and return if enabling RS422 */  in uart_sanitize_serial_rs485()
1392 	if (rs485->flags & SER_RS485_MODE_RS422) {  in uart_sanitize_serial_rs485()
1393 		rs485->flags &= (SER_RS485_ENABLED | SER_RS485_MODE_RS422 | SER_RS485_TERMINATE_BUS);  in uart_sanitize_serial_rs485()
1397 	rs485->flags &= supported_flags;  in uart_sanitize_serial_rs485()
1400 	if (!(rs485->flags & SER_RS485_RTS_ON_SEND) ==  in uart_sanitize_serial_rs485()
1401 	    !(rs485->flags & SER_RS485_RTS_AFTER_SEND)) {  in uart_sanitize_serial_rs485()
1403 			rs485->flags |= SER_RS485_RTS_ON_SEND;  in uart_sanitize_serial_rs485()
1404 			rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;  in uart_sanitize_serial_rs485()
1410 			rs485->flags |= SER_RS485_RTS_AFTER_SEND;  in uart_sanitize_serial_rs485()
1411 			rs485->flags &= ~SER_RS485_RTS_ON_SEND;  in uart_sanitize_serial_rs485()
1419 	uart_sanitize_serial_rs485_delays(port, rs485);  in uart_sanitize_serial_rs485()
1422 	memset(rs485->padding0, 0, sizeof(rs485->padding0));  in uart_sanitize_serial_rs485()
1423 	memset(rs485->padding1, 0, sizeof(rs485->padding1));  in uart_sanitize_serial_rs485()
1427 				       const struct serial_rs485 *rs485)  in uart_set_rs485_termination()  argument
1429 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_set_rs485_termination()
1433 				 !!(rs485->flags & SER_RS485_TERMINATE_BUS));  in uart_set_rs485_termination()
1437 					const struct serial_rs485 *rs485)  in uart_set_rs485_rx_during_tx()  argument
1439 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_set_rs485_rx_during_tx()
1443 				 !!(rs485->flags & SER_RS485_RX_DURING_TX));  in uart_set_rs485_rx_during_tx()
1448 	struct serial_rs485 *rs485 = &port->rs485;  in uart_rs485_config()  local
1452 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_rs485_config()
1455 	uart_sanitize_serial_rs485(port, rs485);  in uart_rs485_config()
1456 	uart_set_rs485_termination(port, rs485);  in uart_rs485_config()
1457 	uart_set_rs485_rx_during_tx(port, rs485);  in uart_rs485_config()
1460 	ret = port->rs485_config(port, NULL, rs485);  in uart_rs485_config()
1463 		memset(rs485, 0, sizeof(*rs485));  in uart_rs485_config()
1473 			 struct serial_rs485 __user *rs485)  in uart_get_rs485_config()  argument
1479 	aux = port->rs485;  in uart_get_rs485_config()
1482 	if (copy_to_user(rs485, &aux, sizeof(aux)))  in uart_get_rs485_config()
1491 	struct serial_rs485 rs485;  in uart_set_rs485_config()  local
1498 	if (copy_from_user(&rs485, rs485_user, sizeof(*rs485_user)))  in uart_set_rs485_config()
1501 	ret = uart_check_rs485_flags(port, &rs485);  in uart_set_rs485_config()
1504 	uart_sanitize_serial_rs485(port, &rs485);  in uart_set_rs485_config()
1505 	uart_set_rs485_termination(port, &rs485);  in uart_set_rs485_config()
1506 	uart_set_rs485_rx_during_tx(port, &rs485);  in uart_set_rs485_config()
1509 	ret = port->rs485_config(port, &tty->termios, &rs485);  in uart_set_rs485_config()
1511 		port->rs485 = rs485;  in uart_set_rs485_config()
1513 		/* Reset RTS and other mctrl lines when disabling RS485 */  in uart_set_rs485_config()
1514 		if (!(rs485.flags & SER_RS485_ENABLED))  in uart_set_rs485_config()
1521 			!!(port->rs485.flags & SER_RS485_TERMINATE_BUS));  in uart_set_rs485_config()
1523 			!!(port->rs485.flags & SER_RS485_RX_DURING_TX));  in uart_set_rs485_config()
1527 	if (copy_to_user(rs485_user, &port->rs485, sizeof(port->rs485)))  in uart_set_rs485_config()
2423 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_suspend_port()
2512 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2525 				if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2640 		if (!(port->rs485.flags & SER_RS485_ENABLED))  in uart_configure_port()
3614  * uart_get_rs485_mode() - retrieve rs485 properties for given uart
3618  * Documentation/devicetree/bindings/serial/rs485.txt.
3622 	struct serial_rs485 *rs485conf = &port->rs485;  in uart_get_rs485_mode()
3632 	ret = device_property_read_u32_array(dev, "rs485-rts-delay",  in uart_get_rs485_mode()
3653 	if (device_property_read_bool(dev, "rs485-rx-during-tx"))  in uart_get_rs485_mode()
3656 	if (device_property_read_bool(dev, "linux,rs485-enabled-at-boot-time"))  in uart_get_rs485_mode()
3659 	if (device_property_read_bool(dev, "rs485-rts-active-low")) {  in uart_get_rs485_mode()
3669 	desc = devm_gpiod_get_optional(dev, "rs485-term", GPIOD_OUT_LOW);  in uart_get_rs485_mode()
3671 		return dev_err_probe(dev, PTR_ERR(desc), "Cannot get rs485-term-gpios\n");  in uart_get_rs485_mode()
3678 	desc = devm_gpiod_get_optional(dev, "rs485-rx-during-tx", dflags);  in uart_get_rs485_mode()
3680 		return dev_err_probe(dev, PTR_ERR(desc), "Cannot get rs485-rx-during-tx-gpios\n");  in uart_get_rs485_mode()