github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 10:33:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

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

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

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
Link: https://lore.kernel.org/r/20230414022111.20896-1-sherry.sun@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sherry Sun 2023-04-14 10:21:11 +08:00 committed by Greg Kroah-Hartman
parent f73fd75055
commit d57d56e4dd
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/tty/serial/fsl_lpuart.c
View File

@ -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);