mcf.c (2fc0184dae7be565e4ad47c720e6014cd5543a21) mcf.c (bd737f8738b7e15930aa7b47c94c28a8d83148ac)
1/****************************************************************************/
2
3/*
4 * mcf.c -- Freescale ColdFire UART driver
5 *
6 * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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252 else
253 mr2 |= MCFUART_MR2_STOP1;
254
255 if (termios->c_cflag & CRTSCTS) {
256 mr1 |= MCFUART_MR1_RXRTS;
257 mr2 |= MCFUART_MR2_TXCTS;
258 }
259
1/****************************************************************************/
2
3/*
4 * mcf.c -- Freescale ColdFire UART driver
5 *
6 * (C) Copyright 2003-2007, Greg Ungerer <gerg@snapgear.com>
7 *
8 * This program is free software; you can redistribute it and/or modify

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252 else
253 mr2 |= MCFUART_MR2_STOP1;
254
255 if (termios->c_cflag & CRTSCTS) {
256 mr1 |= MCFUART_MR1_RXRTS;
257 mr2 |= MCFUART_MR2_TXCTS;
258 }
259
260 spin_lock_irqsave(&port->lock, flags);
260 if (port->rs485.flags & SER_RS485_ENABLED) {
261 dev_dbg(port->dev, "Setting UART to RS485\n");
262 mr2 |= MCFUART_MR2_TXRTS;
263 }
264
261 if (port->rs485.flags & SER_RS485_ENABLED) {
262 dev_dbg(port->dev, "Setting UART to RS485\n");
263 mr2 |= MCFUART_MR2_TXRTS;
264 }
265
265 spin_lock_irqsave(&port->lock, flags);
266 uart_update_timeout(port, termios->c_cflag, baud);
267 writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR);
268 writeb(MCFUART_UCR_CMDRESETTX, port->membase + MCFUART_UCR);
269 writeb(MCFUART_UCR_CMDRESETMRPTR, port->membase + MCFUART_UCR);
270 writeb(mr1, port->membase + MCFUART_UMR);
271 writeb(mr2, port->membase + MCFUART_UMR);
272 writeb((baudclk & 0xff00) >> 8, port->membase + MCFUART_UBG1);
273 writeb((baudclk & 0xff), port->membase + MCFUART_UBG2);

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437}
438
439/****************************************************************************/
440
441/* Enable or disable the RS485 support */
442static int mcf_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
443{
444 struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
266 uart_update_timeout(port, termios->c_cflag, baud);
267 writeb(MCFUART_UCR_CMDRESETRX, port->membase + MCFUART_UCR);
268 writeb(MCFUART_UCR_CMDRESETTX, port->membase + MCFUART_UCR);
269 writeb(MCFUART_UCR_CMDRESETMRPTR, port->membase + MCFUART_UCR);
270 writeb(mr1, port->membase + MCFUART_UMR);
271 writeb(mr2, port->membase + MCFUART_UMR);
272 writeb((baudclk & 0xff00) >> 8, port->membase + MCFUART_UBG1);
273 writeb((baudclk & 0xff), port->membase + MCFUART_UBG2);

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437}
438
439/****************************************************************************/
440
441/* Enable or disable the RS485 support */
442static int mcf_config_rs485(struct uart_port *port, struct serial_rs485 *rs485)
443{
444 struct mcf_uart *pp = container_of(port, struct mcf_uart, port);
445 unsigned long flags;
446 unsigned char mr1, mr2;
447
445 unsigned char mr1, mr2;
446
448 spin_lock_irqsave(&port->lock, flags);
449 /* Get mode registers */
450 mr1 = readb(port->membase + MCFUART_UMR);
451 mr2 = readb(port->membase + MCFUART_UMR);
452 if (rs485->flags & SER_RS485_ENABLED) {
453 dev_dbg(port->dev, "Setting UART to RS485\n");
454 /* Automatically negate RTS after TX completes */
455 mr2 |= MCFUART_MR2_TXRTS;
456 } else {
457 dev_dbg(port->dev, "Setting UART to RS232\n");
458 mr2 &= ~MCFUART_MR2_TXRTS;
459 }
460 writeb(mr1, port->membase + MCFUART_UMR);
461 writeb(mr2, port->membase + MCFUART_UMR);
462 port->rs485 = *rs485;
447 /* Get mode registers */
448 mr1 = readb(port->membase + MCFUART_UMR);
449 mr2 = readb(port->membase + MCFUART_UMR);
450 if (rs485->flags & SER_RS485_ENABLED) {
451 dev_dbg(port->dev, "Setting UART to RS485\n");
452 /* Automatically negate RTS after TX completes */
453 mr2 |= MCFUART_MR2_TXRTS;
454 } else {
455 dev_dbg(port->dev, "Setting UART to RS232\n");
456 mr2 &= ~MCFUART_MR2_TXRTS;
457 }
458 writeb(mr1, port->membase + MCFUART_UMR);
459 writeb(mr2, port->membase + MCFUART_UMR);
460 port->rs485 = *rs485;
463 spin_unlock_irqrestore(&port->lock, flags);
464
465 return 0;
466}
467
468/****************************************************************************/
469
470/*
471 * Define the basic serial functions we support.

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462 return 0;
463}
464
465/****************************************************************************/
466
467/*
468 * Define the basic serial functions we support.

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