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    Subject[PATCH 03/27] coldfire: scheduled SERIAL_COLDFIRE removal
    Date
    From: Adrian Bunk <bunk@kernel.org>

    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>
    ---

    Documentation/feature-removal-schedule.txt | 8
    drivers/serial/Kconfig | 16
    drivers/serial/Makefile | 1
    drivers/serial/mcfserial.c | 1965 ----------------------------
    drivers/serial/mcfserial.h | 74 -
    5 files changed, 2 insertions(+), 2062 deletions(-)
    delete mode 100644 drivers/serial/mcfserial.c
    delete mode 100644 drivers/serial/mcfserial.h

    diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
    index 83c88ca..e5c3f9d 100644
    --- a/Documentation/feature-removal-schedule.txt
    +++ b/Documentation/feature-removal-schedule.txt
    @@ -266,14 +266,6 @@ 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
    diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
    index 77cb342..0db2045 100644
    --- a/drivers/serial/Kconfig
    +++ b/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"
    diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
    index 7e7383e..1462eb3 100644
    --- a/drivers/serial/Makefile
    +++ b/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
    diff --git a/drivers/serial/mcfserial.c b/drivers/serial/mcfserial.c
    deleted file mode 100644
    index fbe3835..0000000
    --- a/drivers/serial/mcfserial.c
    +++ /dev/null
    @@ -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);
    -
    -/****************************************************************************/
    diff --git a/drivers/serial/mcfserial.h b/drivers/serial/mcfserial.h
    deleted file mode 100644
    index 56420e2..0000000
    --- a/drivers/serial/mcfserial.h
    +++ /dev/null
    @@ -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 */


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