coldfire: scheduled SERIAL_COLDFIRE removal

This patch contains the scheduled removal of the obsolete
SERIAL_COLDFIRE driver.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Documentation/feature-removal-schedule.txt

@@ -287,14 +287,6 @@ Who:	Glauber Costa <gcosta@redhat.com>
 
 ---------------------------
 
-What:	old style serial driver for ColdFire (CONFIG_SERIAL_COLDFIRE)
-When:	2.6.28
-Why:	This driver still uses the old interface and has been replaced
-	by CONFIG_SERIAL_MCF.
-Who:	Sebastian Siewior <sebastian@breakpoint.cc>
-
----------------------------
-
 What:	/sys/o2cb symlink
 When:	January 2010
 Why:	/sys/fs/o2cb is the proper location for this information - /sys/o2cb

drivers/serial/Kconfig

@@ -994,24 +994,12 @@ config SERIAL_68328_RTS_CTS
 	bool "Support RTS/CTS on 68328 serial port"
 	depends on SERIAL_68328
 
-config SERIAL_COLDFIRE
-	bool "ColdFire serial support (DEPRECATED)"
-	depends on COLDFIRE
-	help
-	  This driver supports the built-in serial ports of the Motorola ColdFire
-	  family of CPUs.
-	  This driver is deprecated because it supports only the old interface
-	  for serial drivers and features like magic keys are not working.
-	  Please switch to the new style driver because this driver will be
-	  removed soon.
-
 config SERIAL_MCF
-	bool "Coldfire serial support (new style driver)"
+	bool "Coldfire serial support"
 	depends on COLDFIRE
 	select SERIAL_CORE
 	help
-	  This new serial driver supports the Freescale Coldfire serial ports
-	  using the new serial driver subsystem.
+	  This serial driver supports the Freescale Coldfire serial ports.
 
 config SERIAL_MCF_BAUDRATE
 	int "Default baudrate for Coldfire serial ports"

drivers/serial/Makefile

@@ -40,7 +40,6 @@ obj-$(CONFIG_SERIAL_SUNSAB) += sunsab.o
 obj-$(CONFIG_SERIAL_MUX) += mux.o
 obj-$(CONFIG_SERIAL_68328) += 68328serial.o
 obj-$(CONFIG_SERIAL_68360) += 68360serial.o
-obj-$(CONFIG_SERIAL_COLDFIRE) += mcfserial.o
 obj-$(CONFIG_SERIAL_MCF) += mcf.o
 obj-$(CONFIG_SERIAL_PMACZILOG) += pmac_zilog.o
 obj-$(CONFIG_SERIAL_LH7A40X) += serial_lh7a40x.o

drivers/serial/mcfserial.c

@@ -1,1965 +0,0 @@
-#warning This driver is deprecated. Check Kconfig for details.
-/*
- * mcfserial.c -- serial driver for ColdFire internal UARTS.
- *
- * Copyright (C) 1999-2003 Greg Ungerer <gerg@snapgear.com>
- * Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com> 
- * Copyright (C) 2001-2002 SnapGear Inc. <www.snapgear.com> 
- *
- * Based on code from 68332serial.c which was:
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 TSHG
- * Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
- *
- * Changes:
- * 08/07/2003    Daniele Bellucci <bellucda@tiscali.it>
- *               some cleanups in mcfrs_write.
- *
- */
- 
-#include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/signal.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/wait.h>
-#include <linux/interrupt.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/string.h>
-#include <linux/fcntl.h>
-#include <linux/mm.h>
-#include <linux/kernel.h>
-#include <linux/serial.h>
-#include <linux/serialP.h>
-#include <linux/console.h>
-#include <linux/init.h>
-#include <linux/bitops.h>
-#include <linux/delay.h>
-
-#include <asm/io.h>
-#include <asm/irq.h>
-#include <asm/system.h>
-#include <asm/delay.h>
-#include <asm/coldfire.h>
-#include <asm/mcfsim.h>
-#include <asm/mcfuart.h>
-#include <asm/nettel.h>
-#include <asm/uaccess.h>
-#include "mcfserial.h"
-
-struct timer_list mcfrs_timer_struct;
-
-/*
- *	Default console baud rate,  we use this as the default
- *	for all ports so init can just open /dev/console and
- *	keep going.  Perhaps one day the cflag settings for the
- *	console can be used instead.
- */
-#if defined(CONFIG_HW_FEITH)
-#define	CONSOLE_BAUD_RATE	38400
-#define	DEFAULT_CBAUD		B38400
-#elif defined(CONFIG_MOD5272) || defined(CONFIG_M5208EVB) || \
-      defined(CONFIG_M5329EVB) || defined(CONFIG_GILBARCO)
-#define CONSOLE_BAUD_RATE 	115200
-#define DEFAULT_CBAUD		B115200
-#elif defined(CONFIG_ARNEWSH) || defined(CONFIG_FREESCALE) || \
-      defined(CONFIG_senTec) || defined(CONFIG_SNEHA) || defined(CONFIG_AVNET)
-#define	CONSOLE_BAUD_RATE	19200
-#define	DEFAULT_CBAUD		B19200
-#endif
-
-#ifndef CONSOLE_BAUD_RATE
-#define	CONSOLE_BAUD_RATE	9600
-#define	DEFAULT_CBAUD		B9600
-#endif
-
-int mcfrs_console_inited = 0;
-int mcfrs_console_port = -1;
-int mcfrs_console_baud = CONSOLE_BAUD_RATE;
-int mcfrs_console_cbaud = DEFAULT_CBAUD;
-
-/*
- *	Driver data structures.
- */
-static struct tty_driver *mcfrs_serial_driver;
-
-/* number of characters left in xmit buffer before we ask for more */
-#define WAKEUP_CHARS 256
-
-/* Debugging...
- */
-#undef SERIAL_DEBUG_OPEN
-#undef SERIAL_DEBUG_FLOW
-
-#if defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x) || \
-    defined(CONFIG_M520x) || defined(CONFIG_M532x)
-#define	IRQBASE	(MCFINT_VECBASE+MCFINT_UART0)
-#else
-#define	IRQBASE	73
-#endif
-
-/*
- *	Configuration table, UARTs to look for at startup.
- */
-static struct mcf_serial mcfrs_table[] = {
-	{  /* ttyS0 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE1),
-		.irq = IRQBASE,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#ifdef MCFUART_BASE2
-	{  /* ttyS1 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE2),
-		.irq = IRQBASE+1,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-#ifdef MCFUART_BASE3
-	{  /* ttyS2 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE3),
-		.irq = IRQBASE+2,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-#ifdef MCFUART_BASE4
-	{  /* ttyS3 */
-		.magic = 0,
-		.addr = (volatile unsigned char *) (MCF_MBAR+MCFUART_BASE4),
-		.irq = IRQBASE+3,
-		.flags = ASYNC_BOOT_AUTOCONF,
-	},
-#endif
-};
-
-
-#define	NR_PORTS	(sizeof(mcfrs_table) / sizeof(struct mcf_serial))
-
-/*
- * This is used to figure out the divisor speeds and the timeouts.
- */
-static int mcfrs_baud_table[] = {
-	0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
-	9600, 19200, 38400, 57600, 115200, 230400, 460800, 0
-};
-#define MCFRS_BAUD_TABLE_SIZE \
-			(sizeof(mcfrs_baud_table)/sizeof(mcfrs_baud_table[0]))
-
-
-#ifdef CONFIG_MAGIC_SYSRQ
-/*
- *	Magic system request keys. Used for debugging...
- */
-extern int	magic_sysrq_key(int ch);
-#endif
-
-
-/*
- *	Forware declarations...
- */
-static void	mcfrs_change_speed(struct mcf_serial *info);
-static void	mcfrs_wait_until_sent(struct tty_struct *tty, int timeout);
-
-
-static inline int serial_paranoia_check(struct mcf_serial *info,
-					char *name, const char *routine)
-{
-#ifdef SERIAL_PARANOIA_CHECK
-	static const char badmagic[] =
-		"MCFRS(warning): bad magic number for serial struct %s in %s\n";
-	static const char badinfo[] =
-		"MCFRS(warning): null mcf_serial for %s in %s\n";
-
-	if (!info) {
-		printk(badinfo, name, routine);
-		return 1;
-	}
-	if (info->magic != SERIAL_MAGIC) {
-		printk(badmagic, name, routine);
-		return 1;
-	}
-#endif
-	return 0;
-}
-
-/*
- *	Sets or clears DTR and RTS on the requested line.
- */
-static void mcfrs_setsignals(struct mcf_serial *info, int dtr, int rts)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	
-#if 0
-	printk("%s(%d): mcfrs_setsignals(info=%x,dtr=%d,rts=%d)\n",
-		__FILE__, __LINE__, info, dtr, rts);
-#endif
-
-	local_irq_save(flags);
-	if (dtr >= 0) {
-#ifdef MCFPP_DTR0
-		if (info->line)
-			mcf_setppdata(MCFPP_DTR1, (dtr ? 0 : MCFPP_DTR1));
-		else
-			mcf_setppdata(MCFPP_DTR0, (dtr ? 0 : MCFPP_DTR0));
-#endif
-	}
-	if (rts >= 0) {
-		uartp = info->addr;
-		if (rts) {
-			info->sigs |= TIOCM_RTS;
-			uartp[MCFUART_UOP1] = MCFUART_UOP_RTS;
-		} else {
-			info->sigs &= ~TIOCM_RTS;
-			uartp[MCFUART_UOP0] = MCFUART_UOP_RTS;
-		}
-	}
-	local_irq_restore(flags);
-	return;
-}
-
-/*
- *	Gets values of serial signals.
- */
-static int mcfrs_getsignals(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	int			sigs;
-#if defined(CONFIG_NETtel) && defined(CONFIG_M5307)
-	unsigned short		ppdata;
-#endif
-
-#if 0
-	printk("%s(%d): mcfrs_getsignals(info=%x)\n", __FILE__, __LINE__);
-#endif
-
-	local_irq_save(flags);
-	uartp = info->addr;
-	sigs = (uartp[MCFUART_UIPR] & MCFUART_UIPR_CTS) ? 0 : TIOCM_CTS;
-	sigs |= (info->sigs & TIOCM_RTS);
-
-#ifdef MCFPP_DCD0
-{
-	unsigned int ppdata;
-	ppdata = mcf_getppdata();
-	if (info->line == 0) {
-		sigs |= (ppdata & MCFPP_DCD0) ? 0 : TIOCM_CD;
-		sigs |= (ppdata & MCFPP_DTR0) ? 0 : TIOCM_DTR;
-	} else if (info->line == 1) {
-		sigs |= (ppdata & MCFPP_DCD1) ? 0 : TIOCM_CD;
-		sigs |= (ppdata & MCFPP_DTR1) ? 0 : TIOCM_DTR;
-	}
-}
-#endif
-
-	local_irq_restore(flags);
-	return(sigs);
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_stop() and mcfrs_start()
- *
- * This routines are called before setting or resetting tty->stopped.
- * They enable or disable transmitter interrupts, as necessary.
- * ------------------------------------------------------------
- */
-static void mcfrs_stop(struct tty_struct *tty)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_stop"))
-		return;
-	
-	local_irq_save(flags);
-	uartp = info->addr;
-	info->imr &= ~MCFUART_UIR_TXREADY;
-	uartp[MCFUART_UIMR] = info->imr;
-	local_irq_restore(flags);
-}
-
-static void mcfrs_start(struct tty_struct *tty)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-	
-	if (serial_paranoia_check(info, tty->name, "mcfrs_start"))
-		return;
-
-	local_irq_save(flags);
-	if (info->xmit_cnt && info->xmit_buf) {
-		uartp = info->addr;
-		info->imr |= MCFUART_UIR_TXREADY;
-		uartp[MCFUART_UIMR] = info->imr;
-	}
-	local_irq_restore(flags);
-}
-
-/*
- * ----------------------------------------------------------------------
- *
- * Here starts the interrupt handling routines.  All of the following
- * subroutines are declared as inline and are folded into
- * mcfrs_interrupt().  They were separated out for readability's sake.
- *
- * Note: mcfrs_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off.  People who may want to modify
- * mcfrs_interrupt() should try to keep the interrupt handler as fast as
- * possible.  After you are done making modifications, it is not a bad
- * idea to do:
- * 
- * gcc -S -DKERNEL -Wall -Wstrict-prototypes -O6 -fomit-frame-pointer serial.c
- *
- * and look at the resulting assemble code in serial.s.
- *
- * 				- Ted Ts'o (tytso@mit.edu), 7-Mar-93
- * -----------------------------------------------------------------------
- */
-
-static inline void receive_chars(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-	struct tty_struct	*tty = info->port.tty;
-	unsigned char		status, ch, flag;
-
-	if (!tty)
-		return;
-
-	uartp = info->addr;
-
-	while ((status = uartp[MCFUART_USR]) & MCFUART_USR_RXREADY) {
-		ch = uartp[MCFUART_URB];
-		info->stats.rx++;
-
-#ifdef CONFIG_MAGIC_SYSRQ
-		if (mcfrs_console_inited && (info->line == mcfrs_console_port)) {
-			if (magic_sysrq_key(ch))
-				continue;
-		}
-#endif
-
-		flag = TTY_NORMAL;
-		if (status & MCFUART_USR_RXERR) {
-			uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETERR;
-			if (status & MCFUART_USR_RXBREAK) {
-				info->stats.rxbreak++;
-				flag = TTY_BREAK;
-			} else if (status & MCFUART_USR_RXPARITY) {
-				info->stats.rxparity++;
-				flag = TTY_PARITY;
-			} else if (status & MCFUART_USR_RXOVERRUN) {
-				info->stats.rxoverrun++;
-				flag = TTY_OVERRUN;
-			} else if (status & MCFUART_USR_RXFRAMING) {
-				info->stats.rxframing++;
-				flag = TTY_FRAME;
-			}
-		}
-		tty_insert_flip_char(tty, ch, flag);
-	}
-	tty_schedule_flip(tty);
-	return;
-}
-
-static inline void transmit_chars(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-
-	uartp = info->addr;
-
-	if (info->x_char) {
-		/* Send special char - probably flow control */
-		uartp[MCFUART_UTB] = info->x_char;
-		info->x_char = 0;
-		info->stats.tx++;
-	}
-
-	if ((info->xmit_cnt <= 0) || info->port.tty->stopped) {
-		info->imr &= ~MCFUART_UIR_TXREADY;
-		uartp[MCFUART_UIMR] = info->imr;
-		return;
-	}
-
-	while (uartp[MCFUART_USR] & MCFUART_USR_TXREADY) {
-		uartp[MCFUART_UTB] = info->xmit_buf[info->xmit_tail++];
-		info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
-		info->stats.tx++;
-		if (--info->xmit_cnt <= 0)
-			break;
-	}
-
-	if (info->xmit_cnt < WAKEUP_CHARS)
-		schedule_work(&info->tqueue);
-	return;
-}
-
-/*
- * This is the serial driver's generic interrupt routine
- */
-irqreturn_t mcfrs_interrupt(int irq, void *dev_id)
-{
-	struct mcf_serial	*info;
-	unsigned char		isr;
-
-	info = &mcfrs_table[(irq - IRQBASE)];
-	isr = info->addr[MCFUART_UISR] & info->imr;
-
-	if (isr & MCFUART_UIR_RXREADY)
-		receive_chars(info);
-	if (isr & MCFUART_UIR_TXREADY)
-		transmit_chars(info);
-	return IRQ_HANDLED;
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the serial interrupt routines.
- * -------------------------------------------------------------------
- */
-
-static void mcfrs_offintr(struct work_struct *work)
-{
-	struct mcf_serial *info = container_of(work, struct mcf_serial, tqueue);
-	struct tty_struct *tty = info->port.tty;
-	
-	if (tty)
-		tty_wakeup(tty);
-}
-
-
-/*
- *	Change of state on a DCD line.
- */
-void mcfrs_modem_change(struct mcf_serial *info, int dcd)
-{
-	if (info->count == 0)
-		return;
-
-	if (info->flags & ASYNC_CHECK_CD) {
-		if (dcd)
-			wake_up_interruptible(&info->open_wait);
-		else 
-			schedule_work(&info->tqueue_hangup);
-	}
-}
-
-
-#ifdef MCFPP_DCD0
-
-unsigned short	mcfrs_ppstatus;
-
-/*
- * This subroutine is called when the RS_TIMER goes off. It is used
- * to monitor the state of the DCD lines - since they have no edge
- * sensors and interrupt generators.
- */
-static void mcfrs_timer(void)
-{
-	unsigned int	ppstatus, dcdval, i;
-
-	ppstatus = mcf_getppdata() & (MCFPP_DCD0 | MCFPP_DCD1);
-
-	if (ppstatus != mcfrs_ppstatus) {
-		for (i = 0; (i < 2); i++) {
-			dcdval = (i ? MCFPP_DCD1 : MCFPP_DCD0);
-			if ((ppstatus & dcdval) != (mcfrs_ppstatus & dcdval)) {
-				mcfrs_modem_change(&mcfrs_table[i],
-					((ppstatus & dcdval) ? 0 : 1));
-			}
-		}
-	}
-	mcfrs_ppstatus = ppstatus;
-
-	/* Re-arm timer */
-	mcfrs_timer_struct.expires = jiffies + HZ/25;
-	add_timer(&mcfrs_timer_struct);
-}
-
-#endif	/* MCFPP_DCD0 */
-
-
-/*
- * This routine is called from the scheduler tqueue when the interrupt
- * routine has signalled that a hangup has occurred. The path of
- * hangup processing is:
- *
- * 	serial interrupt routine -> (scheduler tqueue) ->
- * 	do_serial_hangup() -> tty->hangup() -> mcfrs_hangup()
- * 
- */
-static void do_serial_hangup(struct work_struct *work)
-{
-	struct mcf_serial *info = container_of(work, struct mcf_serial, tqueue_hangup);
-	struct tty_struct *tty = info->port.tty;
-	
-	if (tty)
-		tty_hangup(tty);
-}
-
-static int startup(struct mcf_serial * info)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	
-	if (info->flags & ASYNC_INITIALIZED)
-		return 0;
-
-	if (!info->xmit_buf) {
-		info->xmit_buf = (unsigned char *) __get_free_page(GFP_KERNEL);
-		if (!info->xmit_buf)
-			return -ENOMEM;
-	}
-
-	local_irq_save(flags);
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("starting up ttyS%d (irq %d)...\n", info->line, info->irq);
-#endif
-
-	/*
-	 *	Reset UART, get it into known state...
-	 */
-	uartp = info->addr;
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX;  /* reset RX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX;  /* reset TX */
-	mcfrs_setsignals(info, 1, 1);
-
-	if (info->port.tty)
-		clear_bit(TTY_IO_ERROR, &info->port.tty->flags);
-	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-
-	/*
-	 * and set the speed of the serial port
-	 */
-	mcfrs_change_speed(info);
-
-	/*
-	 * Lastly enable the UART transmitter and receiver, and
-	 * interrupt enables.
-	 */
-	info->imr = MCFUART_UIR_RXREADY;
-	uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE;
-	uartp[MCFUART_UIMR] = info->imr;
-
-	info->flags |= ASYNC_INITIALIZED;
-	local_irq_restore(flags);
-	return 0;
-}
-
-/*
- * This routine will shutdown a serial port; interrupts are disabled, and
- * DTR is dropped if the hangup on close termio flag is on.
- */
-static void shutdown(struct mcf_serial * info)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-
-	if (!(info->flags & ASYNC_INITIALIZED))
-		return;
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("Shutting down serial port %d (irq %d)....\n", info->line,
-	       info->irq);
-#endif
-	
-	local_irq_save(flags);
-
-	uartp = info->addr;
-	uartp[MCFUART_UIMR] = 0;  /* mask all interrupts */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX;  /* reset RX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX;  /* reset TX */
-
-	if (!info->port.tty || (info->port.tty->termios->c_cflag & HUPCL))
-		mcfrs_setsignals(info, 0, 0);
-
-	if (info->xmit_buf) {
-		free_page((unsigned long) info->xmit_buf);
-		info->xmit_buf = 0;
-	}
-
-	if (info->port.tty)
-		set_bit(TTY_IO_ERROR, &info->port.tty->flags);
-	
-	info->flags &= ~ASYNC_INITIALIZED;
-	local_irq_restore(flags);
-}
-
-
-/*
- * This routine is called to set the UART divisor registers to match
- * the specified baud rate for a serial port.
- */
-static void mcfrs_change_speed(struct mcf_serial *info)
-{
-	volatile unsigned char	*uartp;
-	unsigned int		baudclk, cflag;
-	unsigned long		flags;
-	unsigned char		mr1, mr2;
-	int			i;
-#ifdef	CONFIG_M5272
-	unsigned int		fraction;
-#endif
-
-	if (!info->port.tty || !info->port.tty->termios)
-		return;
-	cflag = info->port.tty->termios->c_cflag;
-	if (info->addr == 0)
-		return;
-
-#if 0
-	printk("%s(%d): mcfrs_change_speed()\n", __FILE__, __LINE__);
-#endif
-
-	i = cflag & CBAUD;
-	if (i & CBAUDEX) {
-		i &= ~CBAUDEX;
-		if (i < 1 || i > 4)
-			info->port.tty->termios->c_cflag &= ~CBAUDEX;
-		else
-			i += 15;
-	}
-	if (i == 0) {
-		mcfrs_setsignals(info, 0, -1);
-		return;
-	}
-
-	/* compute the baudrate clock */
-#ifdef	CONFIG_M5272
-	/*
-	 * For the MCF5272, also compute the baudrate fraction.
-	 */
-	baudclk = (MCF_BUSCLK / mcfrs_baud_table[i]) / 32;
-	fraction = MCF_BUSCLK - (baudclk * 32 * mcfrs_baud_table[i]);
-	fraction *= 16;
-	fraction /= (32 * mcfrs_baud_table[i]);
-#else
-	baudclk = ((MCF_BUSCLK / mcfrs_baud_table[i]) + 16) / 32;
-#endif
-
-	info->baud = mcfrs_baud_table[i];
-
-	mr1 = MCFUART_MR1_RXIRQRDY | MCFUART_MR1_RXERRCHAR;
-	mr2 = 0;
-
-	switch (cflag & CSIZE) {
-	case CS5:	mr1 |= MCFUART_MR1_CS5; break;
-	case CS6:	mr1 |= MCFUART_MR1_CS6; break;
-	case CS7:	mr1 |= MCFUART_MR1_CS7; break;
-	case CS8:
-	default:	mr1 |= MCFUART_MR1_CS8; break;
-	}
-
-	if (cflag & PARENB) {
-		if (cflag & CMSPAR) {
-			if (cflag & PARODD)
-				mr1 |= MCFUART_MR1_PARITYMARK;
-			else
-				mr1 |= MCFUART_MR1_PARITYSPACE;
-		} else {
-			if (cflag & PARODD)
-				mr1 |= MCFUART_MR1_PARITYODD;
-			else
-				mr1 |= MCFUART_MR1_PARITYEVEN;
-		}
-	} else {
-		mr1 |= MCFUART_MR1_PARITYNONE;
-	}
-
-	if (cflag & CSTOPB)
-		mr2 |= MCFUART_MR2_STOP2;
-	else
-		mr2 |= MCFUART_MR2_STOP1;
-
-	if (cflag & CRTSCTS) {
-		mr1 |= MCFUART_MR1_RXRTS;
-		mr2 |= MCFUART_MR2_TXCTS;
-	}
-
-	if (cflag & CLOCAL)
-		info->flags &= ~ASYNC_CHECK_CD;
-	else
-		info->flags |= ASYNC_CHECK_CD;
-
-	uartp = info->addr;
-
-	local_irq_save(flags);
-#if 0
-	printk("%s(%d): mr1=%x mr2=%x baudclk=%x\n", __FILE__, __LINE__,
-		mr1, mr2, baudclk);
-#endif
-	/*
-	  Note: pg 12-16 of MCF5206e User's Manual states that a
-	  software reset should be performed prior to changing
-	  UMR1,2, UCSR, UACR, bit 7
-	*/
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX;    /* reset RX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX;    /* reset TX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETMRPTR;	/* reset MR pointer */
-	uartp[MCFUART_UMR] = mr1;
-	uartp[MCFUART_UMR] = mr2;
-	uartp[MCFUART_UBG1] = (baudclk & 0xff00) >> 8;	/* set msb byte */
-	uartp[MCFUART_UBG2] = (baudclk & 0xff);		/* set lsb byte */
-#ifdef	CONFIG_M5272
-	uartp[MCFUART_UFPD] = (fraction & 0xf);		/* set fraction */
-#endif
-	uartp[MCFUART_UCSR] = MCFUART_UCSR_RXCLKTIMER | MCFUART_UCSR_TXCLKTIMER;
-	uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE;
-	mcfrs_setsignals(info, 1, -1);
-	local_irq_restore(flags);
-	return;
-}
-
-static void mcfrs_flush_chars(struct tty_struct *tty)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_flush_chars"))
-		return;
-
-	uartp = (volatile unsigned char *) info->addr;
-
-	/*
-	 * re-enable receiver interrupt
-	 */
-	local_irq_save(flags);
-	if ((!(info->imr & MCFUART_UIR_RXREADY)) &&
-	    (info->flags & ASYNC_INITIALIZED) ) {
-		info->imr |= MCFUART_UIR_RXREADY;
-		uartp[MCFUART_UIMR] = info->imr;
-	}
-	local_irq_restore(flags);
-
-	if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
-	    !info->xmit_buf)
-		return;
-
-	/* Enable transmitter */
-	local_irq_save(flags);
-	info->imr |= MCFUART_UIR_TXREADY;
-	uartp[MCFUART_UIMR] = info->imr;
-	local_irq_restore(flags);
-}
-
-static int mcfrs_write(struct tty_struct * tty,
-		    const unsigned char *buf, int count)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-	int			c, total = 0;
-
-#if 0
-	printk("%s(%d): mcfrs_write(tty=%x,buf=%x,count=%d)\n",
-		__FILE__, __LINE__, (int)tty, (int)buf, count);
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_write"))
-		return 0;
-
-	if (!tty || !info->xmit_buf)
-		return 0;
-	
-	local_save_flags(flags);
-	while (1) {
-		local_irq_disable();		
-		c = min(count, (int) min(((int)SERIAL_XMIT_SIZE) - info->xmit_cnt - 1,
-			((int)SERIAL_XMIT_SIZE) - info->xmit_head));
-		local_irq_restore(flags);
-
-		if (c <= 0)
-			break;
-
-		memcpy(info->xmit_buf + info->xmit_head, buf, c);
-
-		local_irq_disable();
-		info->xmit_head = (info->xmit_head + c) & (SERIAL_XMIT_SIZE-1);
-		info->xmit_cnt += c;
-		local_irq_restore(flags);
-
-		buf += c;
-		count -= c;
-		total += c;
-	}
-
-	local_irq_disable();
-	uartp = info->addr;
-	info->imr |= MCFUART_UIR_TXREADY;
-	uartp[MCFUART_UIMR] = info->imr;
-	local_irq_restore(flags);
-
-	return total;
-}
-
-static int mcfrs_write_room(struct tty_struct *tty)
-{
-	struct mcf_serial *info = (struct mcf_serial *)tty->driver_data;
-	int	ret;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_write_room"))
-		return 0;
-	ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
-	if (ret < 0)
-		ret = 0;
-	return ret;
-}
-
-static int mcfrs_chars_in_buffer(struct tty_struct *tty)
-{
-	struct mcf_serial *info = (struct mcf_serial *)tty->driver_data;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_chars_in_buffer"))
-		return 0;
-	return info->xmit_cnt;
-}
-
-static void mcfrs_flush_buffer(struct tty_struct *tty)
-{
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_flush_buffer"))
-		return;
-
-	local_irq_save(flags);
-	info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
-	local_irq_restore(flags);
-
-	tty_wakeup(tty);
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_throttle()
- * 
- * This routine is called by the upper-layer tty layer to signal that
- * incoming characters should be throttled.
- * ------------------------------------------------------------
- */
-static void mcfrs_throttle(struct tty_struct * tty)
-{
-	struct mcf_serial *info = (struct mcf_serial *)tty->driver_data;
-#ifdef SERIAL_DEBUG_THROTTLE
-	char	buf[64];
-	
-	printk("throttle %s: %d....\n", tty_name(tty, buf),
-	       tty->ldisc.chars_in_buffer(tty));
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_throttle"))
-		return;
-	
-	if (I_IXOFF(tty))
-		info->x_char = STOP_CHAR(tty);
-
-	/* Turn off RTS line (do this atomic) */
-}
-
-static void mcfrs_unthrottle(struct tty_struct * tty)
-{
-	struct mcf_serial *info = (struct mcf_serial *)tty->driver_data;
-#ifdef SERIAL_DEBUG_THROTTLE
-	char	buf[64];
-	
-	printk("unthrottle %s: %d....\n", tty_name(tty, buf),
-	       tty->ldisc.chars_in_buffer(tty));
-#endif
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_unthrottle"))
-		return;
-	
-	if (I_IXOFF(tty)) {
-		if (info->x_char)
-			info->x_char = 0;
-		else
-			info->x_char = START_CHAR(tty);
-	}
-
-	/* Assert RTS line (do this atomic) */
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_ioctl() and friends
- * ------------------------------------------------------------
- */
-
-static int get_serial_info(struct mcf_serial * info,
-			   struct serial_struct * retinfo)
-{
-	struct serial_struct tmp;
-  
-	if (!retinfo)
-		return -EFAULT;
-	memset(&tmp, 0, sizeof(tmp));
-	tmp.type = info->type;
-	tmp.line = info->line;
-	tmp.port = (unsigned int) info->addr;
-	tmp.irq = info->irq;
-	tmp.flags = info->flags;
-	tmp.baud_base = info->baud_base;
-	tmp.close_delay = info->close_delay;
-	tmp.closing_wait = info->closing_wait;
-	tmp.custom_divisor = info->custom_divisor;
-	return copy_to_user(retinfo,&tmp,sizeof(*retinfo)) ? -EFAULT : 0;
-}
-
-static int set_serial_info(struct mcf_serial * info,
-			   struct serial_struct * new_info)
-{
-	struct serial_struct new_serial;
-	struct mcf_serial old_info;
-	int 	retval = 0;
-
-	if (!new_info)
-		return -EFAULT;
-	if (copy_from_user(&new_serial,new_info,sizeof(new_serial)))
-		return -EFAULT;
-	old_info = *info;
-
-	if (!capable(CAP_SYS_ADMIN)) {
-		if ((new_serial.baud_base != info->baud_base) ||
-		    (new_serial.type != info->type) ||
-		    (new_serial.close_delay != info->close_delay) ||
-		    ((new_serial.flags & ~ASYNC_USR_MASK) !=
-		     (info->flags & ~ASYNC_USR_MASK)))
-			return -EPERM;
-		info->flags = ((info->flags & ~ASYNC_USR_MASK) |
-			       (new_serial.flags & ASYNC_USR_MASK));
-		info->custom_divisor = new_serial.custom_divisor;
-		goto check_and_exit;
-	}
-
-	if (info->count > 1)
-		return -EBUSY;
-
-	/*
-	 * OK, past this point, all the error checking has been done.
-	 * At this point, we start making changes.....
-	 */
-
-	info->baud_base = new_serial.baud_base;
-	info->flags = ((info->flags & ~ASYNC_FLAGS) |
-			(new_serial.flags & ASYNC_FLAGS));
-	info->type = new_serial.type;
-	info->close_delay = new_serial.close_delay;
-	info->closing_wait = new_serial.closing_wait;
-
-check_and_exit:
-	retval = startup(info);
-	return retval;
-}
-
-/*
- * get_lsr_info - get line status register info
- *
- * Purpose: Let user call ioctl() to get info when the UART physically
- * 	    is emptied.  On bus types like RS485, the transmitter must
- * 	    release the bus after transmitting. This must be done when
- * 	    the transmit shift register is empty, not be done when the
- * 	    transmit holding register is empty.  This functionality
- * 	    allows an RS485 driver to be written in user space. 
- */
-static int get_lsr_info(struct mcf_serial * info, unsigned int *value)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	unsigned char		status;
-
-	local_irq_save(flags);
-	uartp = info->addr;
-	status = (uartp[MCFUART_USR] & MCFUART_USR_TXEMPTY) ? TIOCSER_TEMT : 0;
-	local_irq_restore(flags);
-
-	return put_user(status,value);
-}
-
-/*
- * This routine sends a break character out the serial port.
- */
-static void send_break(	struct mcf_serial * info, int duration)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-
-	if (!info->addr)
-		return;
-	set_current_state(TASK_INTERRUPTIBLE);
-	uartp = info->addr;
-
-	local_irq_save(flags);
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDBREAKSTART;
-	schedule_timeout(duration);
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDBREAKSTOP;
-	local_irq_restore(flags);
-}
-
-static int mcfrs_tiocmget(struct tty_struct *tty, struct file *file)
-{
-	struct mcf_serial * info = (struct mcf_serial *)tty->driver_data;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_ioctl"))
-		return -ENODEV;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
-
-	return mcfrs_getsignals(info);
-}
-
-static int mcfrs_tiocmset(struct tty_struct *tty, struct file *file,
-			  unsigned int set, unsigned int clear)
-{
-	struct mcf_serial * info = (struct mcf_serial *)tty->driver_data;
-	int rts = -1, dtr = -1;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_ioctl"))
-		return -ENODEV;
-	if (tty->flags & (1 << TTY_IO_ERROR))
-		return -EIO;
-
-	if (set & TIOCM_RTS)
-		rts = 1;
-	if (set & TIOCM_DTR)
-		dtr = 1;
-	if (clear & TIOCM_RTS)
-		rts = 0;
-	if (clear & TIOCM_DTR)
-		dtr = 0;
-
-	mcfrs_setsignals(info, dtr, rts);
-
-	return 0;
-}
-
-static int mcfrs_ioctl(struct tty_struct *tty, struct file * file,
-		    unsigned int cmd, unsigned long arg)
-{
-	struct mcf_serial * info = (struct mcf_serial *)tty->driver_data;
-	int retval, error;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_ioctl"))
-		return -ENODEV;
-
-	if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
-	    (cmd != TIOCSERCONFIG) && (cmd != TIOCSERGWILD)  &&
-	    (cmd != TIOCSERSWILD) && (cmd != TIOCSERGSTRUCT)) {
-		if (tty->flags & (1 << TTY_IO_ERROR))
-		    return -EIO;
-	}
-	
-	switch (cmd) {
-		case TCSBRK:	/* SVID version: non-zero arg --> no break */
-			retval = tty_check_change(tty);
-			if (retval)
-				return retval;
-			tty_wait_until_sent(tty, 0);
-			if (!arg)
-				send_break(info, HZ/4);	/* 1/4 second */
-			return 0;
-		case TCSBRKP:	/* support for POSIX tcsendbreak() */
-			retval = tty_check_change(tty);
-			if (retval)
-				return retval;
-			tty_wait_until_sent(tty, 0);
-			send_break(info, arg ? arg*(HZ/10) : HZ/4);
-			return 0;
-		case TIOCGSERIAL:
-			if (access_ok(VERIFY_WRITE, (void *) arg,
-						sizeof(struct serial_struct)))
-				return get_serial_info(info,
-					       (struct serial_struct *) arg);
-			return -EFAULT;
-		case TIOCSSERIAL:
-			return set_serial_info(info,
-					       (struct serial_struct *) arg);
-		case TIOCSERGETLSR: /* Get line status register */
-			if (access_ok(VERIFY_WRITE, (void *) arg,
-						sizeof(unsigned int)))
-				return get_lsr_info(info, (unsigned int *) arg);
-			return -EFAULT;
-		case TIOCSERGSTRUCT:
-			error = copy_to_user((struct mcf_serial *) arg,
-				    info, sizeof(struct mcf_serial));
-			if (error)
-				return -EFAULT;
-			return 0;
-			
-#ifdef TIOCSET422
-		case TIOCSET422: {
-			unsigned int val;
-			get_user(val, (unsigned int *) arg);
-			mcf_setpa(MCFPP_PA11, (val ? 0 : MCFPP_PA11));
-			break;
-		}
-		case TIOCGET422: {
-			unsigned int val;
-			val = (mcf_getpa() & MCFPP_PA11) ? 0 : 1;
-			put_user(val, (unsigned int *) arg);
-			break;
-		}
-#endif
-
-		default:
-			return -ENOIOCTLCMD;
-		}
-	return 0;
-}
-
-static void mcfrs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
-{
-	struct mcf_serial *info = (struct mcf_serial *)tty->driver_data;
-
-	if (tty->termios->c_cflag == old_termios->c_cflag)
-		return;
-
-	mcfrs_change_speed(info);
-
-	if ((old_termios->c_cflag & CRTSCTS) &&
-	    !(tty->termios->c_cflag & CRTSCTS)) {
-		tty->hw_stopped = 0;
-		mcfrs_setsignals(info, -1, 1);
-#if 0
-		mcfrs_start(tty);
-#endif
-	}
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_close()
- * 
- * This routine is called when the serial port gets closed.  First, we
- * wait for the last remaining data to be sent.  Then, we unlink its
- * S structure from the interrupt chain if necessary, and we free
- * that IRQ if nothing is left in the chain.
- * ------------------------------------------------------------
- */
-static void mcfrs_close(struct tty_struct *tty, struct file * filp)
-{
-	volatile unsigned char	*uartp;
-	struct mcf_serial	*info = (struct mcf_serial *)tty->driver_data;
-	unsigned long		flags;
-
-	if (!info || serial_paranoia_check(info, tty->name, "mcfrs_close"))
-		return;
-	
-	local_irq_save(flags);
-	
-	if (tty_hung_up_p(filp)) {
-		local_irq_restore(flags);
-		return;
-	}
-	
-#ifdef SERIAL_DEBUG_OPEN
-	printk("mcfrs_close ttyS%d, count = %d\n", info->line, info->count);
-#endif
-	if ((tty->count == 1) && (info->count != 1)) {
-		/*
-		 * Uh, oh.  tty->count is 1, which means that the tty
-		 * structure will be freed.  Info->count should always
-		 * be one in these conditions.  If it's greater than
-		 * one, we've got real problems, since it means the
-		 * serial port won't be shutdown.
-		 */
-		printk("MCFRS: bad serial port count; tty->count is 1, "
-		       "info->count is %d\n", info->count);
-		info->count = 1;
-	}
-	if (--info->count < 0) {
-		printk("MCFRS: bad serial port count for ttyS%d: %d\n",
-		       info->line, info->count);
-		info->count = 0;
-	}
-	if (info->count) {
-		local_irq_restore(flags);
-		return;
-	}
-	info->flags |= ASYNC_CLOSING;
-
-	/*
-	 * Now we wait for the transmit buffer to clear; and we notify 
-	 * the line discipline to only process XON/XOFF characters.
-	 */
-	tty->closing = 1;
-	if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE)
-		tty_wait_until_sent(tty, info->closing_wait);
-
-	/*
-	 * At this point we stop accepting input.  To do this, we
-	 * disable the receive line status interrupts, and tell the
-	 * interrupt driver to stop checking the data ready bit in the
-	 * line status register.
-	 */
-	info->imr &= ~MCFUART_UIR_RXREADY;
-	uartp = info->addr;
-	uartp[MCFUART_UIMR] = info->imr;
-
-#if 0
-	/* FIXME: do we need to keep this enabled for console?? */
-	if (mcfrs_console_inited && (mcfrs_console_port == info->line)) {
-		/* Do not disable the UART */ ;
-	} else
-#endif
-	shutdown(info);
-	mcfrs_flush_buffer(tty);
-	tty_ldisc_flush(tty);
-	
-	tty->closing = 0;
-	info->event = 0;
-	info->port.tty = NULL;
-#if 0	
-	if (tty->ldisc.num != ldiscs[N_TTY].num) {
-		if (tty->ldisc.close)
-			(tty->ldisc.close)(tty);
-		tty->ldisc = ldiscs[N_TTY];
-		tty->termios->c_line = N_TTY;
-		if (tty->ldisc.open)
-			(tty->ldisc.open)(tty);
-	}
-#endif	
-	if (info->blocked_open) {
-		if (info->close_delay) {
-			msleep_interruptible(jiffies_to_msecs(info->close_delay));
-		}
-		wake_up_interruptible(&info->open_wait);
-	}
-	info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING);
-	wake_up_interruptible(&info->close_wait);
-	local_irq_restore(flags);
-}
-
-/*
- * mcfrs_wait_until_sent() --- wait until the transmitter is empty
- */
-static void
-mcfrs_wait_until_sent(struct tty_struct *tty, int timeout)
-{
-#ifdef	CONFIG_M5272
-#define	MCF5272_FIFO_SIZE	25		/* fifo size + shift reg */
-
-	struct mcf_serial * info = (struct mcf_serial *)tty->driver_data;
-	volatile unsigned char *uartp;
-	unsigned long orig_jiffies, fifo_time, char_time, fifo_cnt;
-
-	if (serial_paranoia_check(info, tty->name, "mcfrs_wait_until_sent"))
-		return;
-
-	orig_jiffies = jiffies;
-
-	/*
-	 * Set the check interval to be 1/5 of the approximate time
-	 * to send the entire fifo, and make it at least 1.  The check
-	 * interval should also be less than the timeout.
-	 *
-	 * Note: we have to use pretty tight timings here to satisfy
-	 * the NIST-PCTS.
-	 */
-	lock_kernel();
-
-	fifo_time = (MCF5272_FIFO_SIZE * HZ * 10) / info->baud;
-	char_time = fifo_time / 5;
-	if (char_time == 0)
-		char_time = 1;
-	if (timeout && timeout < char_time)
-		char_time = timeout;
-
-	/*
-	 * Clamp the timeout period at 2 * the time to empty the
-	 * fifo.  Just to be safe, set the minimum at .5 seconds.
-	 */
-	fifo_time *= 2;
-	if (fifo_time < (HZ/2))
-		fifo_time = HZ/2;
-	if (!timeout || timeout > fifo_time)
-		timeout = fifo_time;
-
-	/*
-	 * Account for the number of bytes in the UART
-	 * transmitter FIFO plus any byte being shifted out.
-	 */
-	uartp = (volatile unsigned char *) info->addr;
-	for (;;) {
-		fifo_cnt = (uartp[MCFUART_UTF] & MCFUART_UTF_TXB);
-		if ((uartp[MCFUART_USR] & (MCFUART_USR_TXREADY|
-				MCFUART_USR_TXEMPTY)) ==
-			MCFUART_USR_TXREADY)
-			fifo_cnt++;
-		if (fifo_cnt == 0)
-			break;
-		msleep_interruptible(jiffies_to_msecs(char_time));
-		if (signal_pending(current))
-			break;
-		if (timeout && time_after(jiffies, orig_jiffies + timeout))
-			break;
-	}
-	unlock_kernel();
-#else
-	/*
-	 * For the other coldfire models, assume all data has been sent
-	 */
-#endif
-}
-
-/*
- * mcfrs_hangup() --- called by tty_hangup() when a hangup is signaled.
- */
-void mcfrs_hangup(struct tty_struct *tty)
-{
-	struct mcf_serial * info = (struct mcf_serial *)tty->driver_data;
-	
-	if (serial_paranoia_check(info, tty->name, "mcfrs_hangup"))
-		return;
-	
-	mcfrs_flush_buffer(tty);
-	shutdown(info);
-	info->event = 0;
-	info->count = 0;
-	info->flags &= ~ASYNC_NORMAL_ACTIVE;
-	info->port.tty = NULL;
-	wake_up_interruptible(&info->open_wait);
-}
-
-/*
- * ------------------------------------------------------------
- * mcfrs_open() and friends
- * ------------------------------------------------------------
- */
-static int block_til_ready(struct tty_struct *tty, struct file * filp,
-			   struct mcf_serial *info)
-{
-	DECLARE_WAITQUEUE(wait, current);
-	int	retval;
-	int	do_clocal = 0;
-
-	/*
-	 * If the device is in the middle of being closed, then block
-	 * until it's done, and then try again.
-	 */
-	if (info->flags & ASYNC_CLOSING) {
-		interruptible_sleep_on(&info->close_wait);
-#ifdef SERIAL_DO_RESTART
-		if (info->flags & ASYNC_HUP_NOTIFY)
-			return -EAGAIN;
-		else
-			return -ERESTARTSYS;
-#else
-		return -EAGAIN;
-#endif
-	}
-	
-	/*
-	 * If non-blocking mode is set, or the port is not enabled,
-	 * then make the check up front and then exit.
-	 */
-	if ((filp->f_flags & O_NONBLOCK) ||
-	    (tty->flags & (1 << TTY_IO_ERROR))) {
-		info->flags |= ASYNC_NORMAL_ACTIVE;
-		return 0;
-	}
-
-	if (tty->termios->c_cflag & CLOCAL)
-		do_clocal = 1;
-
-	/*
-	 * Block waiting for the carrier detect and the line to become
-	 * free (i.e., not in use by the callout).  While we are in
-	 * this loop, info->count is dropped by one, so that
-	 * mcfrs_close() knows when to free things.  We restore it upon
-	 * exit, either normal or abnormal.
-	 */
-	retval = 0;
-	add_wait_queue(&info->open_wait, &wait);
-#ifdef SERIAL_DEBUG_OPEN
-	printk("block_til_ready before block: ttyS%d, count = %d\n",
-	       info->line, info->count);
-#endif
-	info->count--;
-	info->blocked_open++;
-	while (1) {
-		local_irq_disable();
-		mcfrs_setsignals(info, 1, 1);
-		local_irq_enable();
-		current->state = TASK_INTERRUPTIBLE;
-		if (tty_hung_up_p(filp) ||
-		    !(info->flags & ASYNC_INITIALIZED)) {
-#ifdef SERIAL_DO_RESTART
-			if (info->flags & ASYNC_HUP_NOTIFY)
-				retval = -EAGAIN;
-			else
-				retval = -ERESTARTSYS;	
-#else
-			retval = -EAGAIN;
-#endif
-			break;
-		}
-		if (!(info->flags & ASYNC_CLOSING) &&
-		    (do_clocal || (mcfrs_getsignals(info) & TIOCM_CD)))
-			break;
-		if (signal_pending(current)) {
-			retval = -ERESTARTSYS;
-			break;
-		}
-#ifdef SERIAL_DEBUG_OPEN
-		printk("block_til_ready blocking: ttyS%d, count = %d\n",
-		       info->line, info->count);
-#endif
-		schedule();
-	}
-	current->state = TASK_RUNNING;
-	remove_wait_queue(&info->open_wait, &wait);
-	if (!tty_hung_up_p(filp))
-		info->count++;
-	info->blocked_open--;
-#ifdef SERIAL_DEBUG_OPEN
-	printk("block_til_ready after blocking: ttyS%d, count = %d\n",
-	       info->line, info->count);
-#endif
-	if (retval)
-		return retval;
-	info->flags |= ASYNC_NORMAL_ACTIVE;
-	return 0;
-}	
-
-/*
- * This routine is called whenever a serial port is opened. It
- * enables interrupts for a serial port, linking in its structure into
- * the IRQ chain.   It also performs the serial-specific
- * initialization for the tty structure.
- */
-int mcfrs_open(struct tty_struct *tty, struct file * filp)
-{
-	struct mcf_serial	*info;
-	int 			retval, line;
-
-	line = tty->index;
-	if ((line < 0) || (line >= NR_PORTS))
-		return -ENODEV;
-	info = mcfrs_table + line;
-	if (serial_paranoia_check(info, tty->name, "mcfrs_open"))
-		return -ENODEV;
-#ifdef SERIAL_DEBUG_OPEN
-	printk("mcfrs_open %s, count = %d\n", tty->name, info->count);
-#endif
-	info->count++;
-	tty->driver_data = info;
-	info->port.tty = tty;
-
-	/*
-	 * Start up serial port
-	 */
-	retval = startup(info);
-	if (retval)
-		return retval;
-
-	retval = block_til_ready(tty, filp, info);
-	if (retval) {
-#ifdef SERIAL_DEBUG_OPEN
-		printk("mcfrs_open returning after block_til_ready with %d\n",
-		       retval);
-#endif
-		return retval;
-	}
-
-#ifdef SERIAL_DEBUG_OPEN
-	printk("mcfrs_open %s successful...\n", tty->name);
-#endif
-	return 0;
-}
-
-/*
- *	Based on the line number set up the internal interrupt stuff.
- */
-static void mcfrs_irqinit(struct mcf_serial *info)
-{
-#if defined(CONFIG_M5272)
-	volatile unsigned long	*icrp;
-	volatile unsigned long	*portp;
-	volatile unsigned char	*uartp;
-
-	uartp = info->addr;
-	icrp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_ICR2);
-
-	switch (info->line) {
-	case 0:
-		*icrp = 0xe0000000;
-		break;
-	case 1:
-		*icrp = 0x0e000000;
-		break;
-	default:
-		printk("MCFRS: don't know how to handle UART %d interrupt?\n",
-			info->line);
-		return;
-	}
-
-	/* Enable the output lines for the serial ports */
-	portp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_PBCNT);
-	*portp = (*portp & ~0x000000ff) | 0x00000055;
-	portp = (volatile unsigned long *) (MCF_MBAR + MCFSIM_PDCNT);
-	*portp = (*portp & ~0x000003fc) | 0x000002a8;
-#elif defined(CONFIG_M523x) || defined(CONFIG_M527x) || defined(CONFIG_M528x)
-	volatile unsigned char *icrp, *uartp;
-	volatile unsigned long *imrp;
-
-	uartp = info->addr;
-
-	icrp = (volatile unsigned char *) (MCF_MBAR + MCFICM_INTC0 +
-		MCFINTC_ICR0 + MCFINT_UART0 + info->line);
-	*icrp = 0x30 + info->line; /* level 6, line based priority */
-
-	imrp = (volatile unsigned long *) (MCF_MBAR + MCFICM_INTC0 +
-		MCFINTC_IMRL);
-	*imrp &= ~((1 << (info->irq - MCFINT_VECBASE)) | 1);
-#if defined(CONFIG_M527x)
-	{
-		/*
-		 * External Pin Mask Setting & Enable External Pin for Interface
-		 * mrcbis@aliceposta.it
-        	 */
-		u16 *serpin_enable_mask;
-		serpin_enable_mask = (u16 *) (MCF_IPSBAR + MCF_GPIO_PAR_UART);
-		if (info->line == 0)
-			*serpin_enable_mask |= UART0_ENABLE_MASK;
-		else if (info->line == 1)
-			*serpin_enable_mask |= UART1_ENABLE_MASK;
-		else if (info->line == 2)
-			*serpin_enable_mask |= UART2_ENABLE_MASK;
-	}
-#endif
-#if defined(CONFIG_M528x)
-	/* make sure PUAPAR is set for UART0 and UART1 */
-	if (info->line < 2) {
-		volatile unsigned char *portp = (volatile unsigned char *) (MCF_MBAR + MCF5282_GPIO_PUAPAR);
-		*portp |= (0x03 << (info->line * 2));
-	}
-#endif
-#elif defined(CONFIG_M520x)
-	volatile unsigned char *icrp, *uartp;
-	volatile unsigned long *imrp;
-
-	uartp = info->addr;
-
-	icrp = (volatile unsigned char *) (MCF_MBAR + MCFICM_INTC0 +
-		MCFINTC_ICR0 + MCFINT_UART0 + info->line);
-	*icrp = 0x03;
-
-	imrp = (volatile unsigned long *) (MCF_MBAR + MCFICM_INTC0 +
-		MCFINTC_IMRL);
-	*imrp &= ~((1 << (info->irq - MCFINT_VECBASE)) | 1);
-	if (info->line < 2) {
-		unsigned short *uart_par;
-		uart_par = (unsigned short *)(MCF_IPSBAR + MCF_GPIO_PAR_UART);
-		if (info->line == 0)
-			*uart_par |=  MCF_GPIO_PAR_UART_PAR_UTXD0
-				  | MCF_GPIO_PAR_UART_PAR_URXD0;
-		else if (info->line == 1)
-			*uart_par |=  MCF_GPIO_PAR_UART_PAR_UTXD1
-				  | MCF_GPIO_PAR_UART_PAR_URXD1;
-		} else if (info->line == 2) {
-			unsigned char *feci2c_par;
-			feci2c_par = (unsigned char *)(MCF_IPSBAR +  MCF_GPIO_PAR_FECI2C);
-			*feci2c_par &= ~0x0F;
-			*feci2c_par |=  MCF_GPIO_PAR_FECI2C_PAR_SCL_UTXD2
-				    | MCF_GPIO_PAR_FECI2C_PAR_SDA_URXD2;
-		}
-#elif defined(CONFIG_M532x)
-	volatile unsigned char *uartp;
-	uartp = info->addr;
-	switch (info->line) {
-	case 0:
-		MCF_INTC0_ICR26 = 0x3;
-		MCF_INTC0_CIMR = 26;
-		/* GPIO initialization */
-		MCF_GPIO_PAR_UART |= 0x000F;
-		break;
-	case 1:
-		MCF_INTC0_ICR27 = 0x3;
-		MCF_INTC0_CIMR = 27;
-		/* GPIO initialization */
-		MCF_GPIO_PAR_UART |= 0x0FF0;
-		break;
-	case 2:
-		MCF_INTC0_ICR28 = 0x3;
-		MCF_INTC0_CIMR = 28;
-		/* GPIOs also must be initalized, depends on board */
-		break;
-	}
-#else
-	volatile unsigned char	*icrp, *uartp;
-
-	switch (info->line) {
-	case 0:
-		icrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_UART1ICR);
-		*icrp = /*MCFSIM_ICR_AUTOVEC |*/ MCFSIM_ICR_LEVEL6 |
-			MCFSIM_ICR_PRI1;
-		mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART1);
-		break;
-	case 1:
-		icrp = (volatile unsigned char *) (MCF_MBAR + MCFSIM_UART2ICR);
-		*icrp = /*MCFSIM_ICR_AUTOVEC |*/ MCFSIM_ICR_LEVEL6 |
-			MCFSIM_ICR_PRI2;
-		mcf_setimr(mcf_getimr() & ~MCFSIM_IMR_UART2);
-		break;
-	default:
-		printk("MCFRS: don't know how to handle UART %d interrupt?\n",
-			info->line);
-		return;
-	}
-
-	uartp = info->addr;
-	uartp[MCFUART_UIVR] = info->irq;
-#endif
-
-	/* Clear mask, so no surprise interrupts. */
-	uartp[MCFUART_UIMR] = 0;
-
-	if (request_irq(info->irq, mcfrs_interrupt, IRQF_DISABLED,
-	    "ColdFire UART", NULL)) {
-		printk("MCFRS: Unable to attach ColdFire UART %d interrupt "
-			"vector=%d\n", info->line, info->irq);
-	}
-
-	return;
-}
-
-
-char *mcfrs_drivername = "ColdFire internal UART serial driver version 1.00\n";
-
-
-/*
- * Serial stats reporting...
- */
-int mcfrs_readproc(char *page, char **start, off_t off, int count,
-		         int *eof, void *data)
-{
-	struct mcf_serial	*info;
-	char			str[20];
-	int			len, sigs, i;
-
-	len = sprintf(page, mcfrs_drivername);
-	for (i = 0; (i < NR_PORTS); i++) {
-		info = &mcfrs_table[i];
-		len += sprintf((page + len), "%d: port:%x irq=%d baud:%d ",
-			i, (unsigned int) info->addr, info->irq, info->baud);
-		if (info->stats.rx || info->stats.tx)
-			len += sprintf((page + len), "tx:%d rx:%d ",
-			info->stats.tx, info->stats.rx);
-		if (info->stats.rxframing)
-			len += sprintf((page + len), "fe:%d ",
-			info->stats.rxframing);
-		if (info->stats.rxparity)
-			len += sprintf((page + len), "pe:%d ",
-			info->stats.rxparity);
-		if (info->stats.rxbreak)
-			len += sprintf((page + len), "brk:%d ",
-			info->stats.rxbreak);
-		if (info->stats.rxoverrun)
-			len += sprintf((page + len), "oe:%d ",
-			info->stats.rxoverrun);
-
-		str[0] = str[1] = 0;
-		if ((sigs = mcfrs_getsignals(info))) {
-			if (sigs & TIOCM_RTS)
-				strcat(str, "|RTS");
-			if (sigs & TIOCM_CTS)
-				strcat(str, "|CTS");
-			if (sigs & TIOCM_DTR)
-				strcat(str, "|DTR");
-			if (sigs & TIOCM_CD)
-				strcat(str, "|CD");
-		}
-
-		len += sprintf((page + len), "%s\n", &str[1]);
-	}
-
-	return(len);
-}
-
-
-/* Finally, routines used to initialize the serial driver. */
-
-static void show_serial_version(void)
-{
-	printk(mcfrs_drivername);
-}
-
-static const struct tty_operations mcfrs_ops = {
-	.open = mcfrs_open,
-	.close = mcfrs_close,
-	.write = mcfrs_write,
-	.flush_chars = mcfrs_flush_chars,
-	.write_room = mcfrs_write_room,
-	.chars_in_buffer = mcfrs_chars_in_buffer,
-	.flush_buffer = mcfrs_flush_buffer,
-	.ioctl = mcfrs_ioctl,
-	.throttle = mcfrs_throttle,
-	.unthrottle = mcfrs_unthrottle,
-	.set_termios = mcfrs_set_termios,
-	.stop = mcfrs_stop,
-	.start = mcfrs_start,
-	.hangup = mcfrs_hangup,
-	.read_proc = mcfrs_readproc,
-	.wait_until_sent = mcfrs_wait_until_sent,
- 	.tiocmget = mcfrs_tiocmget,
-	.tiocmset = mcfrs_tiocmset,
-};
-
-/* mcfrs_init inits the driver */
-static int __init
-mcfrs_init(void)
-{
-	struct mcf_serial	*info;
-	unsigned long		flags;
-	int			i;
-
-	/* Setup base handler, and timer table. */
-#ifdef MCFPP_DCD0
-	init_timer(&mcfrs_timer_struct);
-	mcfrs_timer_struct.function = mcfrs_timer;
-	mcfrs_timer_struct.data = 0;
-	mcfrs_timer_struct.expires = jiffies + HZ/25;
-	add_timer(&mcfrs_timer_struct);
-	mcfrs_ppstatus = mcf_getppdata() & (MCFPP_DCD0 | MCFPP_DCD1);
-#endif
-	mcfrs_serial_driver = alloc_tty_driver(NR_PORTS);
-	if (!mcfrs_serial_driver)
-		return -ENOMEM;
-
-	show_serial_version();
-
-	/* Initialize the tty_driver structure */
-	mcfrs_serial_driver->owner = THIS_MODULE;
-	mcfrs_serial_driver->name = "ttyS";
-	mcfrs_serial_driver->driver_name = "mcfserial";
-	mcfrs_serial_driver->major = TTY_MAJOR;
-	mcfrs_serial_driver->minor_start = 64;
-	mcfrs_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
-	mcfrs_serial_driver->subtype = SERIAL_TYPE_NORMAL;
-	mcfrs_serial_driver->init_termios = tty_std_termios;
-
-	mcfrs_serial_driver->init_termios.c_cflag =
-		mcfrs_console_cbaud | CS8 | CREAD | HUPCL | CLOCAL;
-	mcfrs_serial_driver->flags = TTY_DRIVER_REAL_RAW;
-
-	tty_set_operations(mcfrs_serial_driver, &mcfrs_ops);
-
-	if (tty_register_driver(mcfrs_serial_driver)) {
-		printk("MCFRS: Couldn't register serial driver\n");
-		put_tty_driver(mcfrs_serial_driver);
-		return(-EBUSY);
-	}
-
-	local_irq_save(flags);
-
-	/*
-	 *	Configure all the attached serial ports.
-	 */
-	for (i = 0, info = mcfrs_table; (i < NR_PORTS); i++, info++) {
-		info->magic = SERIAL_MAGIC;
-		info->line = i;
-		info->port.tty = NULL;
-		info->custom_divisor = 16;
-		info->close_delay = 50;
-		info->closing_wait = 3000;
-		info->x_char = 0;
-		info->event = 0;
-		info->count = 0;
-		info->blocked_open = 0;
-		INIT_WORK(&info->tqueue, mcfrs_offintr);
-		INIT_WORK(&info->tqueue_hangup, do_serial_hangup);
-		init_waitqueue_head(&info->open_wait);
-		init_waitqueue_head(&info->close_wait);
-
-		info->imr = 0;
-		mcfrs_setsignals(info, 0, 0);
-		mcfrs_irqinit(info);
-
-		printk("ttyS%d at 0x%04x (irq = %d)", info->line,
-			(unsigned int) info->addr, info->irq);
-		printk(" is a builtin ColdFire UART\n");
-	}
-
-	local_irq_restore(flags);
-	return 0;
-}
-
-module_init(mcfrs_init);
-
-/****************************************************************************/
-/*                          Serial Console                                  */
-/****************************************************************************/
-
-/*
- *	Quick and dirty UART initialization, for console output.
- */
-
-void mcfrs_init_console(void)
-{
-	volatile unsigned char	*uartp;
-	unsigned int		clk;
-
-	/*
-	 *	Reset UART, get it into known state...
-	 */
-	uartp = (volatile unsigned char *) (MCF_MBAR +
-		(mcfrs_console_port ? MCFUART_BASE2 : MCFUART_BASE1));
-
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETRX;  /* reset RX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETTX;  /* reset TX */
-	uartp[MCFUART_UCR] = MCFUART_UCR_CMDRESETMRPTR;  /* reset MR pointer */
-
-	/*
-	 * Set port for defined baud , 8 data bits, 1 stop bit, no parity.
-	 */
-	uartp[MCFUART_UMR] = MCFUART_MR1_PARITYNONE | MCFUART_MR1_CS8;
-	uartp[MCFUART_UMR] = MCFUART_MR2_STOP1;
-
-#ifdef	CONFIG_M5272
-{
-	/*
-	 * For the MCF5272, also compute the baudrate fraction.
-	 */
-	int fraction = MCF_BUSCLK - (clk * 32 * mcfrs_console_baud);
-	fraction *= 16;
-	fraction /= (32 * mcfrs_console_baud);
-	uartp[MCFUART_UFPD] = (fraction & 0xf);		/* set fraction */
-	clk = (MCF_BUSCLK / mcfrs_console_baud) / 32;
-}
-#else
-	clk = ((MCF_BUSCLK / mcfrs_console_baud) + 16) / 32; /* set baud */
-#endif
-
-	uartp[MCFUART_UBG1] = (clk & 0xff00) >> 8;  /* set msb baud */
-	uartp[MCFUART_UBG2] = (clk & 0xff);  /* set lsb baud */
-	uartp[MCFUART_UCSR] = MCFUART_UCSR_RXCLKTIMER | MCFUART_UCSR_TXCLKTIMER;
-	uartp[MCFUART_UCR] = MCFUART_UCR_RXENABLE | MCFUART_UCR_TXENABLE;
-
-	mcfrs_console_inited++;
-	return;
-}
-
-
-/*
- *	Setup for console. Argument comes from the boot command line.
- */
-
-int mcfrs_console_setup(struct console *cp, char *arg)
-{
-	int		i, n = CONSOLE_BAUD_RATE;
-
-	if (!cp)
-		return(-1);
-
-	if (!strncmp(cp->name, "ttyS", 4))
-		mcfrs_console_port = cp->index;
-	else if (!strncmp(cp->name, "cua", 3))
-		mcfrs_console_port = cp->index;
-	else
-		return(-1);
-
-	if (arg)
-		n = simple_strtoul(arg,NULL,0);
-	for (i = 0; i < MCFRS_BAUD_TABLE_SIZE; i++)
-		if (mcfrs_baud_table[i] == n)
-			break;
-	if (i < MCFRS_BAUD_TABLE_SIZE) {
-		mcfrs_console_baud = n;
-		mcfrs_console_cbaud = 0;
-		if (i > 15) {
-			mcfrs_console_cbaud |= CBAUDEX;
-			i -= 15;
-		}
-		mcfrs_console_cbaud |= i;
-	}
-	mcfrs_init_console(); /* make sure baud rate changes */
-	return(0);
-}
-
-
-static struct tty_driver *mcfrs_console_device(struct console *c, int *index)
-{
-	*index = c->index;
-	return mcfrs_serial_driver;
-}
-
-
-/*
- *	Output a single character, using UART polled mode.
- *	This is used for console output.
- */
-
-int mcfrs_put_char(char ch)
-{
-	volatile unsigned char	*uartp;
-	unsigned long		flags;
-	int			i;
-
-	uartp = (volatile unsigned char *) (MCF_MBAR +
-		(mcfrs_console_port ? MCFUART_BASE2 : MCFUART_BASE1));
-
-	local_irq_save(flags);
-	for (i = 0; (i < 0x10000); i++) {
-		if (uartp[MCFUART_USR] & MCFUART_USR_TXREADY)
-			break;
-	}
-	if (i < 0x10000) {
-		uartp[MCFUART_UTB] = ch;
-		for (i = 0; (i < 0x10000); i++)
-			if (uartp[MCFUART_USR] & MCFUART_USR_TXEMPTY)
-				break;
-	}
-	if (i >= 0x10000)
-		mcfrs_init_console(); /* try and get it back */
-	local_irq_restore(flags);
-
-	return 1;
-}
-
-
-/*
- * rs_console_write is registered for printk output.
- */
-
-void mcfrs_console_write(struct console *cp, const char *p, unsigned len)
-{
-	if (!mcfrs_console_inited)
-		mcfrs_init_console();
-	while (len-- > 0) {
-		if (*p == '\n')
-			mcfrs_put_char('\r');
-		mcfrs_put_char(*p++);
-	}
-}
-
-/*
- * declare our consoles
- */
-
-struct console mcfrs_console = {
-	.name		= "ttyS",
-	.write		= mcfrs_console_write,
-	.device		= mcfrs_console_device,
-	.setup		= mcfrs_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-};
-
-static int __init mcfrs_console_init(void)
-{
-	register_console(&mcfrs_console);
-	return 0;
-}
-
-console_initcall(mcfrs_console_init);
-
-/****************************************************************************/

drivers/serial/mcfserial.h

@@ -1,74 +0,0 @@
-/*
- * mcfserial.c -- serial driver for ColdFire internal UARTS.
- *
- * Copyright (c) 1999 Greg Ungerer <gerg@snapgear.com>
- * Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com>
- * Copyright (c) 2002 SnapGear Inc., <www.snapgear.com>
- *
- * Based on code from 68332serial.c which was:
- *
- * Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
- * Copyright (C) 1998 TSHG
- * Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
- */ 
-#ifndef _MCF_SERIAL_H
-#define _MCF_SERIAL_H
-
-#include <linux/serial.h>
-
-#ifdef __KERNEL__
-
-/*
- *	Define a local serial stats structure.
- */
-
-struct mcf_stats {
-	unsigned int	rx;
-	unsigned int	tx;
-	unsigned int	rxbreak;
-	unsigned int	rxframing;
-	unsigned int	rxparity;
-	unsigned int	rxoverrun;
-};
-
-
-/*
- * This is our internal structure for each serial port's state.
- * Each serial port has one of these structures associated with it.
- */
-
-struct mcf_serial {
-	int			magic;
-	volatile unsigned char	*addr;		/* UART memory address */
-	int			irq;
-	int			flags; 		/* defined in tty.h */
-	int			type; 		/* UART type */
-	struct tty_struct 	*tty;
-	unsigned char		imr;		/* Software imr register */
-	unsigned int		baud;
-	int			sigs;
-	int			custom_divisor;
-	int			x_char;	/* xon/xoff character */
-	int			baud_base;
-	int			close_delay;
-	unsigned short		closing_wait;
-	unsigned short		closing_wait2;
-	unsigned long		event;
-	int			line;
-	int			count;	    /* # of fd on device */
-	int			blocked_open; /* # of blocked opens */
-	unsigned char 		*xmit_buf;
-	int			xmit_head;
-	int			xmit_tail;
-	int			xmit_cnt;
-	struct mcf_stats	stats;
-	struct work_struct	tqueue;
-	struct work_struct	tqueue_hangup;
-	wait_queue_head_t	open_wait;
-	wait_queue_head_t	close_wait;
-
-};
-
-#endif /* __KERNEL__ */
-
-#endif /* _MCF_SERIAL_H */