Commit d57d56e4 authored by Sherry Sun's avatar Sherry Sun Committed by Greg Kroah-Hartman
Browse files

tty: serial: fsl_lpuart: use UARTMODIR register bits for lpuart32 platform 



For lpuart32 platforms, UARTMODIR register is used instead of UARTMODEM.
So here should configure the corresponding UARTMODIR register bits to
avoid confusion.

Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarSherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20230414022111.20896-1-sherry.sun@nxp.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent f73fd750

drivers/tty/serial/fsl_lpuart.c

+4 −4
Original line number Diff line number Diff line
@@ -1406,12 +1406,12 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio 
			struct lpuart_port, port);



	unsigned long modem = lpuart32_read(&sport->port, UARTMODIR)

				& ~(UARTMODEM_TXRTSPOL | UARTMODEM_TXRTSE);

				& ~(UARTMODIR_TXRTSPOL | UARTMODIR_TXRTSE);

	lpuart32_write(&sport->port, modem, UARTMODIR);



	if (rs485->flags & SER_RS485_ENABLED) {

		/* Enable auto RS-485 RTS mode */

		modem |= UARTMODEM_TXRTSE;

		modem |= UARTMODIR_TXRTSE;



		/*

		 * The hardware defaults to RTS logic HIGH while transfer.
@@ -1420,9 +1420,9 @@ static int lpuart32_config_rs485(struct uart_port *port, struct ktermios *termio 
		 * Note: UART is assumed to be active high.

		 */

		if (rs485->flags & SER_RS485_RTS_ON_SEND)

			modem |= UARTMODEM_TXRTSPOL;

			modem |= UARTMODIR_TXRTSPOL;

		else if (rs485->flags & SER_RS485_RTS_AFTER_SEND)

			modem &= ~UARTMODEM_TXRTSPOL;

			modem &= ~UARTMODIR_TXRTSPOL;

	}



	lpuart32_write(&sport->port, modem, UARTMODIR);