tty: move drivers/serial/ to drivers/tty/serial/

The serial drivers are really just tty drivers, so move them to
drivers/tty/ to make things a bit neater overall.

This is part of the tty/serial driver movement proceedure as proposed by
Arnd Bergmann and approved by everyone involved a number of months ago.

Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rogier Wolff <R.E.Wolff@bitwizard.nl>
Cc: Michael H. Warfield <mhw@wittsend.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 0 insertions, 955 deletions

diff --git a/drivers/serial/dz.c b/drivers/serial/dz.c
deleted file mode 100644
index 57421d776329..000000000000
--- a/drivers/serial/dz.c
+++ /dev/null
@@ -1,955 +0,0 @@
-/*
- * dz.c: Serial port driver for DECstations equipped
- *       with the DZ chipset.
- *
- * Copyright (C) 1998 Olivier A. D. Lebaillif
- *
- * Email: olivier.lebaillif@ifrsys.com
- *
- * Copyright (C) 2004, 2006, 2007  Maciej W. Rozycki
- *
- * [31-AUG-98] triemer
- * Changed IRQ to use Harald's dec internals interrupts.h
- * removed base_addr code - moving address assignment to setup.c
- * Changed name of dz_init to rs_init to be consistent with tc code
- * [13-NOV-98] triemer fixed code to receive characters
- *    after patches by harald to irq code.
- * [09-JAN-99] triemer minor fix for schedule - due to removal of timeout
- *            field from "current" - somewhere between 2.1.121 and 2.1.131
- Qua Jun 27 15:02:26 BRT 2001
- * [27-JUN-2001] Arnaldo Carvalho de Melo <acme@conectiva.com.br> - cleanups
- *
- * Parts (C) 1999 David Airlie, airlied@linux.ie
- * [07-SEP-99] Bugfixes
- *
- * [06-Jan-2002] Russell King <rmk@arm.linux.org.uk>
- * Converted to new serial core
- */
-
-#undef DEBUG_DZ
-
-#if defined(CONFIG_SERIAL_DZ_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/bitops.h>
-#include <linux/compiler.h>
-#include <linux/console.h>
-#include <linux/delay.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/kernel.h>
-#include <linux/major.h>
-#include <linux/module.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-#include <linux/sysrq.h>
-#include <linux/tty.h>
-
-#include <asm/atomic.h>
-#include <asm/bootinfo.h>
-#include <asm/io.h>
-#include <asm/system.h>
-
-#include <asm/dec/interrupts.h>
-#include <asm/dec/kn01.h>
-#include <asm/dec/kn02.h>
-#include <asm/dec/machtype.h>
-#include <asm/dec/prom.h>
-#include <asm/dec/system.h>
-
-#include "dz.h"
-
-
-MODULE_DESCRIPTION("DECstation DZ serial driver");
-MODULE_LICENSE("GPL");
-
-
-static char dz_name[] __initdata = "DECstation DZ serial driver version ";
-static char dz_version[] __initdata = "1.04";
-
-struct dz_port {
-	struct dz_mux		*mux;
-	struct uart_port	port;
-	unsigned int		cflag;
-};
-
-struct dz_mux {
-	struct dz_port		dport[DZ_NB_PORT];
-	atomic_t		map_guard;
-	atomic_t		irq_guard;
-	int			initialised;
-};
-
-static struct dz_mux dz_mux;
-
-static inline struct dz_port *to_dport(struct uart_port *uport)
-{
-	return container_of(uport, struct dz_port, port);
-}
-
-/*
- * ------------------------------------------------------------
- * dz_in () and dz_out ()
- *
- * These routines are used to access the registers of the DZ
- * chip, hiding relocation differences between implementation.
- * ------------------------------------------------------------
- */
-
-static u16 dz_in(struct dz_port *dport, unsigned offset)
-{
-	void __iomem *addr = dport->port.membase + offset;
-
-	return readw(addr);
-}
-
-static void dz_out(struct dz_port *dport, unsigned offset, u16 value)
-{
-	void __iomem *addr = dport->port.membase + offset;
-
-	writew(value, addr);
-}
-
-/*
- * ------------------------------------------------------------
- * rs_stop () and rs_start ()
- *
- * These routines are called before setting or resetting
- * tty->stopped. They enable or disable transmitter interrupts,
- * as necessary.
- * ------------------------------------------------------------
- */
-
-static void dz_stop_tx(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-	u16 tmp, mask = 1 << dport->port.line;
-
-	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */
-	tmp &= ~mask;			/* clear the TX flag */
-	dz_out(dport, DZ_TCR, tmp);
-}
-
-static void dz_start_tx(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-	u16 tmp, mask = 1 << dport->port.line;
-
-	tmp = dz_in(dport, DZ_TCR);	/* read the TX flag */
-	tmp |= mask;			/* set the TX flag */
-	dz_out(dport, DZ_TCR, tmp);
-}
-
-static void dz_stop_rx(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-
-	dport->cflag &= ~DZ_RXENAB;
-	dz_out(dport, DZ_LPR, dport->cflag);
-}
-
-static void dz_enable_ms(struct uart_port *uport)
-{
-	/* nothing to do */
-}
-
-/*
- * ------------------------------------------------------------
- *
- * Here start the interrupt handling routines.  All of the following
- * subroutines are declared as inline and are folded into
- * dz_interrupt.  They were separated out for readability's sake.
- *
- * Note: dz_interrupt() is a "fast" interrupt, which means that it
- * runs with interrupts turned off.  People who may want to modify
- * dz_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:
- *
- *	make drivers/serial/dz.s
- *
- * and look at the resulting assemble code in dz.s.
- *
- * ------------------------------------------------------------
- */
-
-/*
- * ------------------------------------------------------------
- * receive_char ()
- *
- * This routine deals with inputs from any lines.
- * ------------------------------------------------------------
- */
-static inline void dz_receive_chars(struct dz_mux *mux)
-{
-	struct uart_port *uport;
-	struct dz_port *dport = &mux->dport[0];
-	struct tty_struct *tty = NULL;
-	struct uart_icount *icount;
-	int lines_rx[DZ_NB_PORT] = { [0 ... DZ_NB_PORT - 1] = 0 };
-	unsigned char ch, flag;
-	u16 status;
-	int i;
-
-	while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) {
-		dport = &mux->dport[LINE(status)];
-		uport = &dport->port;
-		tty = uport->state->port.tty;	/* point to the proper dev */
-
-		ch = UCHAR(status);		/* grab the char */
-		flag = TTY_NORMAL;
-
-		icount = &uport->icount;
-		icount->rx++;
-
-		if (unlikely(status & (DZ_OERR | DZ_FERR | DZ_PERR))) {
-
-			/*
-			 * There is no separate BREAK status bit, so treat
-			 * null characters with framing errors as BREAKs;
-			 * normally, otherwise.  For this move the Framing
-			 * Error bit to a simulated BREAK bit.
-			 */
-			if (!ch) {
-				status |= (status & DZ_FERR) >>
-					  (ffs(DZ_FERR) - ffs(DZ_BREAK));
-				status &= ~DZ_FERR;
-			}
-
-			/* Handle SysRq/SAK & keep track of the statistics. */
-			if (status & DZ_BREAK) {
-				icount->brk++;
-				if (uart_handle_break(uport))
-					continue;
-			} else if (status & DZ_FERR)
-				icount->frame++;
-			else if (status & DZ_PERR)
-				icount->parity++;
-			if (status & DZ_OERR)
-				icount->overrun++;
-
-			status &= uport->read_status_mask;
-			if (status & DZ_BREAK)
-				flag = TTY_BREAK;
-			else if (status & DZ_FERR)
-				flag = TTY_FRAME;
-			else if (status & DZ_PERR)
-				flag = TTY_PARITY;
-
-		}
-
-		if (uart_handle_sysrq_char(uport, ch))
-			continue;
-
-		uart_insert_char(uport, status, DZ_OERR, ch, flag);
-		lines_rx[LINE(status)] = 1;
-	}
-	for (i = 0; i < DZ_NB_PORT; i++)
-		if (lines_rx[i])
-			tty_flip_buffer_push(mux->dport[i].port.state->port.tty);
-}
-
-/*
- * ------------------------------------------------------------
- * transmit_char ()
- *
- * This routine deals with outputs to any lines.
- * ------------------------------------------------------------
- */
-static inline void dz_transmit_chars(struct dz_mux *mux)
-{
-	struct dz_port *dport = &mux->dport[0];
-	struct circ_buf *xmit;
-	unsigned char tmp;
-	u16 status;
-
-	status = dz_in(dport, DZ_CSR);
-	dport = &mux->dport[LINE(status)];
-	xmit = &dport->port.state->xmit;
-
-	if (dport->port.x_char) {		/* XON/XOFF chars */
-		dz_out(dport, DZ_TDR, dport->port.x_char);
-		dport->port.icount.tx++;
-		dport->port.x_char = 0;
-		return;
-	}
-	/* If nothing to do or stopped or hardware stopped. */
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&dport->port)) {
-		spin_lock(&dport->port.lock);
-		dz_stop_tx(&dport->port);
-		spin_unlock(&dport->port.lock);
-		return;
-	}
-
-	/*
-	 * If something to do... (remember the dz has no output fifo,
-	 * so we go one char at a time) :-<
-	 */
-	tmp = xmit->buf[xmit->tail];
-	xmit->tail = (xmit->tail + 1) & (DZ_XMIT_SIZE - 1);
-	dz_out(dport, DZ_TDR, tmp);
-	dport->port.icount.tx++;
-
-	if (uart_circ_chars_pending(xmit) < DZ_WAKEUP_CHARS)
-		uart_write_wakeup(&dport->port);
-
-	/* Are we are done. */
-	if (uart_circ_empty(xmit)) {
-		spin_lock(&dport->port.lock);
-		dz_stop_tx(&dport->port);
-		spin_unlock(&dport->port.lock);
-	}
-}
-
-/*
- * ------------------------------------------------------------
- * check_modem_status()
- *
- * DS 3100 & 5100: Only valid for the MODEM line, duh!
- * DS 5000/200: Valid for the MODEM and PRINTER line.
- * ------------------------------------------------------------
- */
-static inline void check_modem_status(struct dz_port *dport)
-{
-	/*
-	 * FIXME:
-	 * 1. No status change interrupt; use a timer.
-	 * 2. Handle the 3100/5000 as appropriate. --macro
-	 */
-	u16 status;
-
-	/* If not the modem line just return.  */
-	if (dport->port.line != DZ_MODEM)
-		return;
-
-	status = dz_in(dport, DZ_MSR);
-
-	/* it's easy, since DSR2 is the only bit in the register */
-	if (status)
-		dport->port.icount.dsr++;
-}
-
-/*
- * ------------------------------------------------------------
- * dz_interrupt ()
- *
- * this is the main interrupt routine for the DZ chip.
- * It deals with the multiple ports.
- * ------------------------------------------------------------
- */
-static irqreturn_t dz_interrupt(int irq, void *dev_id)
-{
-	struct dz_mux *mux = dev_id;
-	struct dz_port *dport = &mux->dport[0];
-	u16 status;
-
-	/* get the reason why we just got an irq */
-	status = dz_in(dport, DZ_CSR);
-
-	if ((status & (DZ_RDONE | DZ_RIE)) == (DZ_RDONE | DZ_RIE))
-		dz_receive_chars(mux);
-
-	if ((status & (DZ_TRDY | DZ_TIE)) == (DZ_TRDY | DZ_TIE))
-		dz_transmit_chars(mux);
-
-	return IRQ_HANDLED;
-}
-
-/*
- * -------------------------------------------------------------------
- * Here ends the DZ interrupt routines.
- * -------------------------------------------------------------------
- */
-
-static unsigned int dz_get_mctrl(struct uart_port *uport)
-{
-	/*
-	 * FIXME: Handle the 3100/5000 as appropriate. --macro
-	 */
-	struct dz_port *dport = to_dport(uport);
-	unsigned int mctrl = TIOCM_CAR | TIOCM_DSR | TIOCM_CTS;
-
-	if (dport->port.line == DZ_MODEM) {
-		if (dz_in(dport, DZ_MSR) & DZ_MODEM_DSR)
-			mctrl &= ~TIOCM_DSR;
-	}
-
-	return mctrl;
-}
-
-static void dz_set_mctrl(struct uart_port *uport, unsigned int mctrl)
-{
-	/*
-	 * FIXME: Handle the 3100/5000 as appropriate. --macro
-	 */
-	struct dz_port *dport = to_dport(uport);
-	u16 tmp;
-
-	if (dport->port.line == DZ_MODEM) {
-		tmp = dz_in(dport, DZ_TCR);
-		if (mctrl & TIOCM_DTR)
-			tmp &= ~DZ_MODEM_DTR;
-		else
-			tmp |= DZ_MODEM_DTR;
-		dz_out(dport, DZ_TCR, tmp);
-	}
-}
-
-/*
- * -------------------------------------------------------------------
- * startup ()
- *
- * various initialization tasks
- * -------------------------------------------------------------------
- */
-static int dz_startup(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-	struct dz_mux *mux = dport->mux;
-	unsigned long flags;
-	int irq_guard;
-	int ret;
-	u16 tmp;
-
-	irq_guard = atomic_add_return(1, &mux->irq_guard);
-	if (irq_guard != 1)
-		return 0;
-
-	ret = request_irq(dport->port.irq, dz_interrupt,
-			  IRQF_SHARED, "dz", mux);
-	if (ret) {
-		atomic_add(-1, &mux->irq_guard);
-		printk(KERN_ERR "dz: Cannot get IRQ %d!\n", dport->port.irq);
-		return ret;
-	}
-
-	spin_lock_irqsave(&dport->port.lock, flags);
-
-	/* Enable interrupts.  */
-	tmp = dz_in(dport, DZ_CSR);
-	tmp |= DZ_RIE | DZ_TIE;
-	dz_out(dport, DZ_CSR, tmp);
-
-	spin_unlock_irqrestore(&dport->port.lock, flags);
-
-	return 0;
-}
-
-/*
- * -------------------------------------------------------------------
- * shutdown ()
- *
- * 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 dz_shutdown(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-	struct dz_mux *mux = dport->mux;
-	unsigned long flags;
-	int irq_guard;
-	u16 tmp;
-
-	spin_lock_irqsave(&dport->port.lock, flags);
-	dz_stop_tx(&dport->port);
-	spin_unlock_irqrestore(&dport->port.lock, flags);
-
-	irq_guard = atomic_add_return(-1, &mux->irq_guard);
-	if (!irq_guard) {
-		/* Disable interrupts.  */
-		tmp = dz_in(dport, DZ_CSR);
-		tmp &= ~(DZ_RIE | DZ_TIE);
-		dz_out(dport, DZ_CSR, tmp);
-
-		free_irq(dport->port.irq, mux);
-	}
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_tx_empty() -- get the transmitter empty status
- *
- * 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 unsigned int dz_tx_empty(struct uart_port *uport)
-{
-	struct dz_port *dport = to_dport(uport);
-	unsigned short tmp, mask = 1 << dport->port.line;
-
-	tmp = dz_in(dport, DZ_TCR);
-	tmp &= mask;
-
-	return tmp ? 0 : TIOCSER_TEMT;
-}
-
-static void dz_break_ctl(struct uart_port *uport, int break_state)
-{
-	/*
-	 * FIXME: Can't access BREAK bits in TDR easily;
-	 * reuse the code for polled TX. --macro
-	 */
-	struct dz_port *dport = to_dport(uport);
-	unsigned long flags;
-	unsigned short tmp, mask = 1 << dport->port.line;
-
-	spin_lock_irqsave(&uport->lock, flags);
-	tmp = dz_in(dport, DZ_TCR);
-	if (break_state)
-		tmp |= mask;
-	else
-		tmp &= ~mask;
-	dz_out(dport, DZ_TCR, tmp);
-	spin_unlock_irqrestore(&uport->lock, flags);
-}
-
-static int dz_encode_baud_rate(unsigned int baud)
-{
-	switch (baud) {
-	case 50:
-		return DZ_B50;
-	case 75:
-		return DZ_B75;
-	case 110:
-		return DZ_B110;
-	case 134:
-		return DZ_B134;
-	case 150:
-		return DZ_B150;
-	case 300:
-		return DZ_B300;
-	case 600:
-		return DZ_B600;
-	case 1200:
-		return DZ_B1200;
-	case 1800:
-		return DZ_B1800;
-	case 2000:
-		return DZ_B2000;
-	case 2400:
-		return DZ_B2400;
-	case 3600:
-		return DZ_B3600;
-	case 4800:
-		return DZ_B4800;
-	case 7200:
-		return DZ_B7200;
-	case 9600:
-		return DZ_B9600;
-	default:
-		return -1;
-	}
-}
-
-
-static void dz_reset(struct dz_port *dport)
-{
-	struct dz_mux *mux = dport->mux;
-
-	if (mux->initialised)
-		return;
-
-	dz_out(dport, DZ_CSR, DZ_CLR);
-	while (dz_in(dport, DZ_CSR) & DZ_CLR);
-	iob();
-
-	/* Enable scanning.  */
-	dz_out(dport, DZ_CSR, DZ_MSE);
-
-	mux->initialised = 1;
-}
-
-static void dz_set_termios(struct uart_port *uport, struct ktermios *termios,
-			   struct ktermios *old_termios)
-{
-	struct dz_port *dport = to_dport(uport);
-	unsigned long flags;
-	unsigned int cflag, baud;
-	int bflag;
-
-	cflag = dport->port.line;
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS5:
-		cflag |= DZ_CS5;
-		break;
-	case CS6:
-		cflag |= DZ_CS6;
-		break;
-	case CS7:
-		cflag |= DZ_CS7;
-		break;
-	case CS8:
-	default:
-		cflag |= DZ_CS8;
-	}
-
-	if (termios->c_cflag & CSTOPB)
-		cflag |= DZ_CSTOPB;
-	if (termios->c_cflag & PARENB)
-		cflag |= DZ_PARENB;
-	if (termios->c_cflag & PARODD)
-		cflag |= DZ_PARODD;
-
-	baud = uart_get_baud_rate(uport, termios, old_termios, 50, 9600);
-	bflag = dz_encode_baud_rate(baud);
-	if (bflag < 0)	{			/* Try to keep unchanged.  */
-		baud = uart_get_baud_rate(uport, old_termios, NULL, 50, 9600);
-		bflag = dz_encode_baud_rate(baud);
-		if (bflag < 0)	{		/* Resort to 9600.  */
-			baud = 9600;
-			bflag = DZ_B9600;
-		}
-		tty_termios_encode_baud_rate(termios, baud, baud);
-	}
-	cflag |= bflag;
-
-	if (termios->c_cflag & CREAD)
-		cflag |= DZ_RXENAB;
-
-	spin_lock_irqsave(&dport->port.lock, flags);
-
-	uart_update_timeout(uport, termios->c_cflag, baud);
-
-	dz_out(dport, DZ_LPR, cflag);
-	dport->cflag = cflag;
-
-	/* setup accept flag */
-	dport->port.read_status_mask = DZ_OERR;
-	if (termios->c_iflag & INPCK)
-		dport->port.read_status_mask |= DZ_FERR | DZ_PERR;
-	if (termios->c_iflag & (BRKINT | PARMRK))
-		dport->port.read_status_mask |= DZ_BREAK;
-
-	/* characters to ignore */
-	uport->ignore_status_mask = 0;
-	if ((termios->c_iflag & (IGNPAR | IGNBRK)) == (IGNPAR | IGNBRK))
-		dport->port.ignore_status_mask |= DZ_OERR;
-	if (termios->c_iflag & IGNPAR)
-		dport->port.ignore_status_mask |= DZ_FERR | DZ_PERR;
-	if (termios->c_iflag & IGNBRK)
-		dport->port.ignore_status_mask |= DZ_BREAK;
-
-	spin_unlock_irqrestore(&dport->port.lock, flags);
-}
-
-/*
- * Hack alert!
- * Required solely so that the initial PROM-based console
- * works undisturbed in parallel with this one.
- */
-static void dz_pm(struct uart_port *uport, unsigned int state,
-		  unsigned int oldstate)
-{
-	struct dz_port *dport = to_dport(uport);
-	unsigned long flags;
-
-	spin_lock_irqsave(&dport->port.lock, flags);
-	if (state < 3)
-		dz_start_tx(&dport->port);
-	else
-		dz_stop_tx(&dport->port);
-	spin_unlock_irqrestore(&dport->port.lock, flags);
-}
-
-
-static const char *dz_type(struct uart_port *uport)
-{
-	return "DZ";
-}
-
-static void dz_release_port(struct uart_port *uport)
-{
-	struct dz_mux *mux = to_dport(uport)->mux;
-	int map_guard;
-
-	iounmap(uport->membase);
-	uport->membase = NULL;
-
-	map_guard = atomic_add_return(-1, &mux->map_guard);
-	if (!map_guard)
-		release_mem_region(uport->mapbase, dec_kn_slot_size);
-}
-
-static int dz_map_port(struct uart_port *uport)
-{
-	if (!uport->membase)
-		uport->membase = ioremap_nocache(uport->mapbase,
-						 dec_kn_slot_size);
-	if (!uport->membase) {
-		printk(KERN_ERR "dz: Cannot map MMIO\n");
-		return -ENOMEM;
-	}
-	return 0;
-}
-
-static int dz_request_port(struct uart_port *uport)
-{
-	struct dz_mux *mux = to_dport(uport)->mux;
-	int map_guard;
-	int ret;
-
-	map_guard = atomic_add_return(1, &mux->map_guard);
-	if (map_guard == 1) {
-		if (!request_mem_region(uport->mapbase, dec_kn_slot_size,
-					"dz")) {
-			atomic_add(-1, &mux->map_guard);
-			printk(KERN_ERR
-			       "dz: Unable to reserve MMIO resource\n");
-			return -EBUSY;
-		}
-	}
-	ret = dz_map_port(uport);
-	if (ret) {
-		map_guard = atomic_add_return(-1, &mux->map_guard);
-		if (!map_guard)
-			release_mem_region(uport->mapbase, dec_kn_slot_size);
-		return ret;
-	}
-	return 0;
-}
-
-static void dz_config_port(struct uart_port *uport, int flags)
-{
-	struct dz_port *dport = to_dport(uport);
-
-	if (flags & UART_CONFIG_TYPE) {
-		if (dz_request_port(uport))
-			return;
-
-		uport->type = PORT_DZ;
-
-		dz_reset(dport);
-	}
-}
-
-/*
- * Verify the new serial_struct (for TIOCSSERIAL).
- */
-static int dz_verify_port(struct uart_port *uport, struct serial_struct *ser)
-{
-	int ret = 0;
-
-	if (ser->type != PORT_UNKNOWN && ser->type != PORT_DZ)
-		ret = -EINVAL;
-	if (ser->irq != uport->irq)
-		ret = -EINVAL;
-	return ret;
-}
-
-static struct uart_ops dz_ops = {
-	.tx_empty	= dz_tx_empty,
-	.get_mctrl	= dz_get_mctrl,
-	.set_mctrl	= dz_set_mctrl,
-	.stop_tx	= dz_stop_tx,
-	.start_tx	= dz_start_tx,
-	.stop_rx	= dz_stop_rx,
-	.enable_ms	= dz_enable_ms,
-	.break_ctl	= dz_break_ctl,
-	.startup	= dz_startup,
-	.shutdown	= dz_shutdown,
-	.set_termios	= dz_set_termios,
-	.pm		= dz_pm,
-	.type		= dz_type,
-	.release_port	= dz_release_port,
-	.request_port	= dz_request_port,
-	.config_port	= dz_config_port,
-	.verify_port	= dz_verify_port,
-};
-
-static void __init dz_init_ports(void)
-{
-	static int first = 1;
-	unsigned long base;
-	int line;
-
-	if (!first)
-		return;
-	first = 0;
-
-	if (mips_machtype == MACH_DS23100 || mips_machtype == MACH_DS5100)
-		base = dec_kn_slot_base + KN01_DZ11;
-	else
-		base = dec_kn_slot_base + KN02_DZ11;
-
-	for (line = 0; line < DZ_NB_PORT; line++) {
-		struct dz_port *dport = &dz_mux.dport[line];
-		struct uart_port *uport = &dport->port;
-
-		dport->mux	= &dz_mux;
-
-		uport->irq	= dec_interrupt[DEC_IRQ_DZ11];
-		uport->fifosize	= 1;
-		uport->iotype	= UPIO_MEM;
-		uport->flags	= UPF_BOOT_AUTOCONF;
-		uport->ops	= &dz_ops;
-		uport->line	= line;
-		uport->mapbase	= base;
-	}
-}
-
-#ifdef CONFIG_SERIAL_DZ_CONSOLE
-/*
- * -------------------------------------------------------------------
- * dz_console_putchar() -- transmit a character
- *
- * Polled transmission.  This is tricky.  We need to mask transmit
- * interrupts so that they do not interfere, enable the transmitter
- * for the line requested and then wait till the transmit scanner
- * requests data for this line.  But it may request data for another
- * line first, in which case we have to disable its transmitter and
- * repeat waiting till our line pops up.  Only then the character may
- * be transmitted.  Finally, the state of the transmitter mask is
- * restored.  Welcome to the world of PDP-11!
- * -------------------------------------------------------------------
- */
-static void dz_console_putchar(struct uart_port *uport, int ch)
-{
-	struct dz_port *dport = to_dport(uport);
-	unsigned long flags;
-	unsigned short csr, tcr, trdy, mask;
-	int loops = 10000;
-
-	spin_lock_irqsave(&dport->port.lock, flags);
-	csr = dz_in(dport, DZ_CSR);
-	dz_out(dport, DZ_CSR, csr & ~DZ_TIE);
-	tcr = dz_in(dport, DZ_TCR);
-	tcr |= 1 << dport->port.line;
-	mask = tcr;
-	dz_out(dport, DZ_TCR, mask);
-	iob();
-	spin_unlock_irqrestore(&dport->port.lock, flags);
-
-	do {
-		trdy = dz_in(dport, DZ_CSR);
-		if (!(trdy & DZ_TRDY))
-			continue;
-		trdy = (trdy & DZ_TLINE) >> 8;
-		if (trdy == dport->port.line)
-			break;
-		mask &= ~(1 << trdy);
-		dz_out(dport, DZ_TCR, mask);
-		iob();
-		udelay(2);
-	} while (--loops);
-
-	if (loops)				/* Cannot send otherwise. */
-		dz_out(dport, DZ_TDR, ch);
-
-	dz_out(dport, DZ_TCR, tcr);
-	dz_out(dport, DZ_CSR, csr);
-}
-
-/*
- * -------------------------------------------------------------------
- * dz_console_print ()
- *
- * dz_console_print is registered for printk.
- * The console must be locked when we get here.
- * -------------------------------------------------------------------
- */
-static void dz_console_print(struct console *co,
-			     const char *str,
-			     unsigned int count)
-{
-	struct dz_port *dport = &dz_mux.dport[co->index];
-#ifdef DEBUG_DZ
-	prom_printf((char *) str);
-#endif
-	uart_console_write(&dport->port, str, count, dz_console_putchar);
-}
-
-static int __init dz_console_setup(struct console *co, char *options)
-{
-	struct dz_port *dport = &dz_mux.dport[co->index];
-	struct uart_port *uport = &dport->port;
-	int baud = 9600;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-	int ret;
-
-	ret = dz_map_port(uport);
-	if (ret)
-		return ret;
-
-	spin_lock_init(&dport->port.lock);	/* For dz_pm().  */
-
-	dz_reset(dport);
-	dz_pm(uport, 0, -1);
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-
-	return uart_set_options(&dport->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver dz_reg;
-static struct console dz_console = {
-	.name	= "ttyS",
-	.write	= dz_console_print,
-	.device	= uart_console_device,
-	.setup	= dz_console_setup,
-	.flags	= CON_PRINTBUFFER,
-	.index	= -1,
-	.data	= &dz_reg,
-};
-
-static int __init dz_serial_console_init(void)
-{
-	if (!IOASIC) {
-		dz_init_ports();
-		register_console(&dz_console);
-		return 0;
-	} else
-		return -ENXIO;
-}
-
-console_initcall(dz_serial_console_init);
-
-#define SERIAL_DZ_CONSOLE	&dz_console
-#else
-#define SERIAL_DZ_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_DZ_CONSOLE */
-
-static struct uart_driver dz_reg = {
-	.owner			= THIS_MODULE,
-	.driver_name		= "serial",
-	.dev_name		= "ttyS",
-	.major			= TTY_MAJOR,
-	.minor			= 64,
-	.nr			= DZ_NB_PORT,
-	.cons			= SERIAL_DZ_CONSOLE,
-};
-
-static int __init dz_init(void)
-{
-	int ret, i;
-
-	if (IOASIC)
-		return -ENXIO;
-
-	printk("%s%s\n", dz_name, dz_version);
-
-	dz_init_ports();
-
-	ret = uart_register_driver(&dz_reg);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < DZ_NB_PORT; i++)
-		uart_add_one_port(&dz_reg, &dz_mux.dport[i].port);
-
-	return 0;
-}
-
-module_init(dz_init);