185 	if (old != port->mctrl && !(port->rs485.flags & SER_RS485_ENABLED))  in uart_update_mctrl()
1306 static int uart_check_rs485_flags(struct uart_port *port, struct serial_rs485 *rs485)  in uart_check_rs485_flags()  argument
1308 	u32 flags = rs485->flags;  in uart_check_rs485_flags()
1321 	if (!(rs485->flags & SER_RS485_ADDRB) &&  in uart_check_rs485_flags()
1322 	    (rs485->flags & (SER_RS485_ADDR_RECV|SER_RS485_ADDR_DEST)))  in uart_check_rs485_flags()
1326 	if (!(rs485->flags & SER_RS485_ADDR_RECV) && rs485->addr_recv)  in uart_check_rs485_flags()
1328 	if (!(rs485->flags & SER_RS485_ADDR_DEST) && rs485->addr_dest)  in uart_check_rs485_flags()
1335 					      struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485_delays()  argument
1338 		if (rs485->delay_rts_before_send) {  in uart_sanitize_serial_rs485_delays()
1343 		rs485->delay_rts_before_send = 0;  in uart_sanitize_serial_rs485_delays()
1344 	} else if (rs485->delay_rts_before_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1345 		rs485->delay_rts_before_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1348 			port->name, port->line, rs485->delay_rts_before_send);  in uart_sanitize_serial_rs485_delays()
1352 		if (rs485->delay_rts_after_send) {  in uart_sanitize_serial_rs485_delays()
1357 		rs485->delay_rts_after_send = 0;  in uart_sanitize_serial_rs485_delays()
1358 	} else if (rs485->delay_rts_after_send > RS485_MAX_RTS_DELAY) {  in uart_sanitize_serial_rs485_delays()
1359 		rs485->delay_rts_after_send = RS485_MAX_RTS_DELAY;  in uart_sanitize_serial_rs485_delays()
1362 			port->name, port->line, rs485->delay_rts_after_send);  in uart_sanitize_serial_rs485_delays()
1366 static void uart_sanitize_serial_rs485(struct uart_port *port, struct serial_rs485 *rs485)  in uart_sanitize_serial_rs485()  argument
1370 	if (!(rs485->flags & SER_RS485_ENABLED)) {  in uart_sanitize_serial_rs485()
1371 		memset(rs485, 0, sizeof(*rs485));  in uart_sanitize_serial_rs485()
1375 	/* Clear other RS485 flags but SER_RS485_TERMINATE_BUS and return if enabling RS422 */  in uart_sanitize_serial_rs485()
1376 	if (rs485->flags & SER_RS485_MODE_RS422) {  in uart_sanitize_serial_rs485()
1377 		rs485->flags &= (SER_RS485_ENABLED | SER_RS485_MODE_RS422 | SER_RS485_TERMINATE_BUS);  in uart_sanitize_serial_rs485()
1381 	rs485->flags &= supported_flags;  in uart_sanitize_serial_rs485()
1384 	if (!(rs485->flags & SER_RS485_RTS_ON_SEND) ==  in uart_sanitize_serial_rs485()
1385 	    !(rs485->flags & SER_RS485_RTS_AFTER_SEND)) {  in uart_sanitize_serial_rs485()
1387 			rs485->flags |= SER_RS485_RTS_ON_SEND;  in uart_sanitize_serial_rs485()
1388 			rs485->flags &= ~SER_RS485_RTS_AFTER_SEND;  in uart_sanitize_serial_rs485()
1394 			rs485->flags |= SER_RS485_RTS_AFTER_SEND;  in uart_sanitize_serial_rs485()
1395 			rs485->flags &= ~SER_RS485_RTS_ON_SEND;  in uart_sanitize_serial_rs485()
1403 	uart_sanitize_serial_rs485_delays(port, rs485);  in uart_sanitize_serial_rs485()
1406 	memset(rs485->padding0, 0, sizeof(rs485->padding0));  in uart_sanitize_serial_rs485()
1407 	memset(rs485->padding1, 0, sizeof(rs485->padding1));  in uart_sanitize_serial_rs485()
1411 				       const struct serial_rs485 *rs485)  in uart_set_rs485_termination()  argument
1413 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_set_rs485_termination()
1417 				 !!(rs485->flags & SER_RS485_TERMINATE_BUS));  in uart_set_rs485_termination()
1421 					const struct serial_rs485 *rs485)  in uart_set_rs485_rx_during_tx()  argument
1423 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_set_rs485_rx_during_tx()
1427 				 !!(rs485->flags & SER_RS485_RX_DURING_TX));  in uart_set_rs485_rx_during_tx()
1432 	struct serial_rs485 *rs485 = &port->rs485;  in uart_rs485_config()  local
1436 	if (!(rs485->flags & SER_RS485_ENABLED))  in uart_rs485_config()
1439 	uart_sanitize_serial_rs485(port, rs485);  in uart_rs485_config()
1440 	uart_set_rs485_termination(port, rs485);  in uart_rs485_config()
1441 	uart_set_rs485_rx_during_tx(port, rs485);  in uart_rs485_config()
1444 	ret = port->rs485_config(port, NULL, rs485);  in uart_rs485_config()
1447 		memset(rs485, 0, sizeof(*rs485));  in uart_rs485_config()
1457 			 struct serial_rs485 __user *rs485)  in uart_get_rs485_config()  argument
1463 	aux = port->rs485;  in uart_get_rs485_config()
1466 	if (copy_to_user(rs485, &aux, sizeof(aux)))  in uart_get_rs485_config()
1475 	struct serial_rs485 rs485;  in uart_set_rs485_config()  local
1482 	if (copy_from_user(&rs485, rs485_user, sizeof(*rs485_user)))  in uart_set_rs485_config()
1485 	ret = uart_check_rs485_flags(port, &rs485);  in uart_set_rs485_config()
1488 	uart_sanitize_serial_rs485(port, &rs485);  in uart_set_rs485_config()
1489 	uart_set_rs485_termination(port, &rs485);  in uart_set_rs485_config()
1490 	uart_set_rs485_rx_during_tx(port, &rs485);  in uart_set_rs485_config()
1493 	ret = port->rs485_config(port, &tty->termios, &rs485);  in uart_set_rs485_config()
1495 		port->rs485 = rs485;  in uart_set_rs485_config()
1497 		/* Reset RTS and other mctrl lines when disabling RS485 */  in uart_set_rs485_config()
1498 		if (!(rs485.flags & SER_RS485_ENABLED))  in uart_set_rs485_config()
1505 			!!(port->rs485.flags & SER_RS485_TERMINATE_BUS));  in uart_set_rs485_config()
1507 			!!(port->rs485.flags & SER_RS485_RX_DURING_TX));  in uart_set_rs485_config()
1511 	if (copy_to_user(rs485_user, &port->rs485, sizeof(port->rs485)))  in uart_set_rs485_config()
2407 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_suspend_port()
2496 		if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2509 				if (!(uport->rs485.flags & SER_RS485_ENABLED))  in uart_resume_port()
2624 		if (!(port->rs485.flags & SER_RS485_ENABLED))  in uart_configure_port()
3581  * uart_get_rs485_mode() - retrieve rs485 properties for given uart
3585  * Documentation/devicetree/bindings/serial/rs485.txt.
3589 	struct serial_rs485 *rs485conf = &port->rs485;  in uart_get_rs485_mode()
3599 	ret = device_property_read_u32_array(dev, "rs485-rts-delay",  in uart_get_rs485_mode()
3620 	if (device_property_read_bool(dev, "rs485-rx-during-tx"))  in uart_get_rs485_mode()
3623 	if (device_property_read_bool(dev, "linux,rs485-enabled-at-boot-time"))  in uart_get_rs485_mode()
3626 	if (device_property_read_bool(dev, "rs485-rts-active-low")) {  in uart_get_rs485_mode()
3636 	desc = devm_gpiod_get_optional(dev, "rs485-term", GPIOD_OUT_LOW);  in uart_get_rs485_mode()
3638 		return dev_err_probe(dev, PTR_ERR(desc), "Cannot get rs485-term-gpios\n");  in uart_get_rs485_mode()
3645 	desc = devm_gpiod_get_optional(dev, "rs485-rx-during-tx", dflags);  in uart_get_rs485_mode()
3647 		return dev_err_probe(dev, PTR_ERR(desc), "Cannot get rs485-rx-during-tx-gpios\n");  in uart_get_rs485_mode()