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, 891 deletions

diff --git a/drivers/serial/bcm63xx_uart.c b/drivers/serial/bcm63xx_uart.c
deleted file mode 100644
index a1a0e55d080..00000000000
--- a/drivers/serial/bcm63xx_uart.c
+++ /dev/null
@@ -1,891 +0,0 @@
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Derived from many drivers using generic_serial interface.
- *
- * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- *
- *  Serial driver for BCM63xx integrated UART.
- *
- * Hardware flow control was _not_ tested since I only have RX/TX on
- * my board.
- */
-
-#if defined(CONFIG_SERIAL_BCM63XX_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/kernel.h>
-#include <linux/platform_device.h>
-#include <linux/init.h>
-#include <linux/delay.h>
-#include <linux/module.h>
-#include <linux/console.h>
-#include <linux/clk.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/sysrq.h>
-#include <linux/serial.h>
-#include <linux/serial_core.h>
-
-#include <bcm63xx_clk.h>
-#include <bcm63xx_irq.h>
-#include <bcm63xx_regs.h>
-#include <bcm63xx_io.h>
-
-#define BCM63XX_NR_UARTS	2
-
-static struct uart_port ports[BCM63XX_NR_UARTS];
-
-/*
- * rx interrupt mask / stat
- *
- * mask:
- *  - rx fifo full
- *  - rx fifo above threshold
- *  - rx fifo not empty for too long
- */
-#define UART_RX_INT_MASK	(UART_IR_MASK(UART_IR_RXOVER) |		\
-				UART_IR_MASK(UART_IR_RXTHRESH) |	\
-				UART_IR_MASK(UART_IR_RXTIMEOUT))
-
-#define UART_RX_INT_STAT	(UART_IR_STAT(UART_IR_RXOVER) |		\
-				UART_IR_STAT(UART_IR_RXTHRESH) |	\
-				UART_IR_STAT(UART_IR_RXTIMEOUT))
-
-/*
- * tx interrupt mask / stat
- *
- * mask:
- * - tx fifo empty
- * - tx fifo below threshold
- */
-#define UART_TX_INT_MASK	(UART_IR_MASK(UART_IR_TXEMPTY) |	\
-				UART_IR_MASK(UART_IR_TXTRESH))
-
-#define UART_TX_INT_STAT	(UART_IR_STAT(UART_IR_TXEMPTY) |	\
-				UART_IR_STAT(UART_IR_TXTRESH))
-
-/*
- * external input interrupt
- *
- * mask: any edge on CTS, DCD
- */
-#define UART_EXTINP_INT_MASK	(UART_EXTINP_IRMASK(UART_EXTINP_IR_CTS) | \
-				 UART_EXTINP_IRMASK(UART_EXTINP_IR_DCD))
-
-/*
- * handy uart register accessor
- */
-static inline unsigned int bcm_uart_readl(struct uart_port *port,
-					 unsigned int offset)
-{
-	return bcm_readl(port->membase + offset);
-}
-
-static inline void bcm_uart_writel(struct uart_port *port,
-				  unsigned int value, unsigned int offset)
-{
-	bcm_writel(value, port->membase + offset);
-}
-
-/*
- * serial core request to check if uart tx fifo is empty
- */
-static unsigned int bcm_uart_tx_empty(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_IR_REG);
-	return (val & UART_IR_STAT(UART_IR_TXEMPTY)) ? 1 : 0;
-}
-
-/*
- * serial core request to set RTS and DTR pin state and loopback mode
- */
-static void bcm_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_MCTL_REG);
-	val &= ~(UART_MCTL_DTR_MASK | UART_MCTL_RTS_MASK);
-	/* invert of written value is reflected on the pin */
-	if (!(mctrl & TIOCM_DTR))
-		val |= UART_MCTL_DTR_MASK;
-	if (!(mctrl & TIOCM_RTS))
-		val |= UART_MCTL_RTS_MASK;
-	bcm_uart_writel(port, val, UART_MCTL_REG);
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	if (mctrl & TIOCM_LOOP)
-		val |= UART_CTL_LOOPBACK_MASK;
-	else
-		val &= ~UART_CTL_LOOPBACK_MASK;
-	bcm_uart_writel(port, val, UART_CTL_REG);
-}
-
-/*
- * serial core request to return RI, CTS, DCD and DSR pin state
- */
-static unsigned int bcm_uart_get_mctrl(struct uart_port *port)
-{
-	unsigned int val, mctrl;
-
-	mctrl = 0;
-	val = bcm_uart_readl(port, UART_EXTINP_REG);
-	if (val & UART_EXTINP_RI_MASK)
-		mctrl |= TIOCM_RI;
-	if (val & UART_EXTINP_CTS_MASK)
-		mctrl |= TIOCM_CTS;
-	if (val & UART_EXTINP_DCD_MASK)
-		mctrl |= TIOCM_CD;
-	if (val & UART_EXTINP_DSR_MASK)
-		mctrl |= TIOCM_DSR;
-	return mctrl;
-}
-
-/*
- * serial core request to disable tx ASAP (used for flow control)
- */
-static void bcm_uart_stop_tx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val &= ~(UART_CTL_TXEN_MASK);
-	bcm_uart_writel(port, val, UART_CTL_REG);
-
-	val = bcm_uart_readl(port, UART_IR_REG);
-	val &= ~UART_TX_INT_MASK;
-	bcm_uart_writel(port, val, UART_IR_REG);
-}
-
-/*
- * serial core request to (re)enable tx
- */
-static void bcm_uart_start_tx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_IR_REG);
-	val |= UART_TX_INT_MASK;
-	bcm_uart_writel(port, val, UART_IR_REG);
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val |= UART_CTL_TXEN_MASK;
-	bcm_uart_writel(port, val, UART_CTL_REG);
-}
-
-/*
- * serial core request to stop rx, called before port shutdown
- */
-static void bcm_uart_stop_rx(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_IR_REG);
-	val &= ~UART_RX_INT_MASK;
-	bcm_uart_writel(port, val, UART_IR_REG);
-}
-
-/*
- * serial core request to enable modem status interrupt reporting
- */
-static void bcm_uart_enable_ms(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_IR_REG);
-	val |= UART_IR_MASK(UART_IR_EXTIP);
-	bcm_uart_writel(port, val, UART_IR_REG);
-}
-
-/*
- * serial core request to start/stop emitting break char
- */
-static void bcm_uart_break_ctl(struct uart_port *port, int ctl)
-{
-	unsigned long flags;
-	unsigned int val;
-
-	spin_lock_irqsave(&port->lock, flags);
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	if (ctl)
-		val |= UART_CTL_XMITBRK_MASK;
-	else
-		val &= ~UART_CTL_XMITBRK_MASK;
-	bcm_uart_writel(port, val, UART_CTL_REG);
-
-	spin_unlock_irqrestore(&port->lock, flags);
-}
-
-/*
- * return port type in string format
- */
-static const char *bcm_uart_type(struct uart_port *port)
-{
-	return (port->type == PORT_BCM63XX) ? "bcm63xx_uart" : NULL;
-}
-
-/*
- * read all chars in rx fifo and send them to core
- */
-static void bcm_uart_do_rx(struct uart_port *port)
-{
-	struct tty_struct *tty;
-	unsigned int max_count;
-
-	/* limit number of char read in interrupt, should not be
-	 * higher than fifo size anyway since we're much faster than
-	 * serial port */
-	max_count = 32;
-	tty = port->state->port.tty;
-	do {
-		unsigned int iestat, c, cstat;
-		char flag;
-
-		/* get overrun/fifo empty information from ier
-		 * register */
-		iestat = bcm_uart_readl(port, UART_IR_REG);
-		if (!(iestat & UART_IR_STAT(UART_IR_RXNOTEMPTY)))
-			break;
-
-		cstat = c = bcm_uart_readl(port, UART_FIFO_REG);
-		port->icount.rx++;
-		flag = TTY_NORMAL;
-		c &= 0xff;
-
-		if (unlikely((cstat & UART_FIFO_ANYERR_MASK))) {
-			/* do stats first */
-			if (cstat & UART_FIFO_BRKDET_MASK) {
-				port->icount.brk++;
-				if (uart_handle_break(port))
-					continue;
-			}
-
-			if (cstat & UART_FIFO_PARERR_MASK)
-				port->icount.parity++;
-			if (cstat & UART_FIFO_FRAMEERR_MASK)
-				port->icount.frame++;
-
-			/* update flag wrt read_status_mask */
-			cstat &= port->read_status_mask;
-			if (cstat & UART_FIFO_BRKDET_MASK)
-				flag = TTY_BREAK;
-			if (cstat & UART_FIFO_FRAMEERR_MASK)
-				flag = TTY_FRAME;
-			if (cstat & UART_FIFO_PARERR_MASK)
-				flag = TTY_PARITY;
-		}
-
-		if (uart_handle_sysrq_char(port, c))
-			continue;
-
-		if (unlikely(iestat & UART_IR_STAT(UART_IR_RXOVER))) {
-			port->icount.overrun++;
-			tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-		}
-
-		if ((cstat & port->ignore_status_mask) == 0)
-			tty_insert_flip_char(tty, c, flag);
-
-	} while (--max_count);
-
-	tty_flip_buffer_push(tty);
-}
-
-/*
- * fill tx fifo with chars to send, stop when fifo is about to be full
- * or when all chars have been sent.
- */
-static void bcm_uart_do_tx(struct uart_port *port)
-{
-	struct circ_buf *xmit;
-	unsigned int val, max_count;
-
-	if (port->x_char) {
-		bcm_uart_writel(port, port->x_char, UART_FIFO_REG);
-		port->icount.tx++;
-		port->x_char = 0;
-		return;
-	}
-
-	if (uart_tx_stopped(port)) {
-		bcm_uart_stop_tx(port);
-		return;
-	}
-
-	xmit = &port->state->xmit;
-	if (uart_circ_empty(xmit))
-		goto txq_empty;
-
-	val = bcm_uart_readl(port, UART_MCTL_REG);
-	val = (val & UART_MCTL_TXFIFOFILL_MASK) >> UART_MCTL_TXFIFOFILL_SHIFT;
-	max_count = port->fifosize - val;
-
-	while (max_count--) {
-		unsigned int c;
-
-		c = xmit->buf[xmit->tail];
-		bcm_uart_writel(port, c, UART_FIFO_REG);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-		if (uart_circ_empty(xmit))
-			break;
-	}
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-
-	if (uart_circ_empty(xmit))
-		goto txq_empty;
-	return;
-
-txq_empty:
-	/* nothing to send, disable transmit interrupt */
-	val = bcm_uart_readl(port, UART_IR_REG);
-	val &= ~UART_TX_INT_MASK;
-	bcm_uart_writel(port, val, UART_IR_REG);
-	return;
-}
-
-/*
- * process uart interrupt
- */
-static irqreturn_t bcm_uart_interrupt(int irq, void *dev_id)
-{
-	struct uart_port *port;
-	unsigned int irqstat;
-
-	port = dev_id;
-	spin_lock(&port->lock);
-
-	irqstat = bcm_uart_readl(port, UART_IR_REG);
-	if (irqstat & UART_RX_INT_STAT)
-		bcm_uart_do_rx(port);
-
-	if (irqstat & UART_TX_INT_STAT)
-		bcm_uart_do_tx(port);
-
-	if (irqstat & UART_IR_MASK(UART_IR_EXTIP)) {
-		unsigned int estat;
-
-		estat = bcm_uart_readl(port, UART_EXTINP_REG);
-		if (estat & UART_EXTINP_IRSTAT(UART_EXTINP_IR_CTS))
-			uart_handle_cts_change(port,
-					       estat & UART_EXTINP_CTS_MASK);
-		if (estat & UART_EXTINP_IRSTAT(UART_EXTINP_IR_DCD))
-			uart_handle_dcd_change(port,
-					       estat & UART_EXTINP_DCD_MASK);
-	}
-
-	spin_unlock(&port->lock);
-	return IRQ_HANDLED;
-}
-
-/*
- * enable rx & tx operation on uart
- */
-static void bcm_uart_enable(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val |= (UART_CTL_BRGEN_MASK | UART_CTL_TXEN_MASK | UART_CTL_RXEN_MASK);
-	bcm_uart_writel(port, val, UART_CTL_REG);
-}
-
-/*
- * disable rx & tx operation on uart
- */
-static void bcm_uart_disable(struct uart_port *port)
-{
-	unsigned int val;
-
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val &= ~(UART_CTL_BRGEN_MASK | UART_CTL_TXEN_MASK |
-		 UART_CTL_RXEN_MASK);
-	bcm_uart_writel(port, val, UART_CTL_REG);
-}
-
-/*
- * clear all unread data in rx fifo and unsent data in tx fifo
- */
-static void bcm_uart_flush(struct uart_port *port)
-{
-	unsigned int val;
-
-	/* empty rx and tx fifo */
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val |= UART_CTL_RSTRXFIFO_MASK | UART_CTL_RSTTXFIFO_MASK;
-	bcm_uart_writel(port, val, UART_CTL_REG);
-
-	/* read any pending char to make sure all irq status are
-	 * cleared */
-	(void)bcm_uart_readl(port, UART_FIFO_REG);
-}
-
-/*
- * serial core request to initialize uart and start rx operation
- */
-static int bcm_uart_startup(struct uart_port *port)
-{
-	unsigned int val;
-	int ret;
-
-	/* mask all irq and flush port */
-	bcm_uart_disable(port);
-	bcm_uart_writel(port, 0, UART_IR_REG);
-	bcm_uart_flush(port);
-
-	/* clear any pending external input interrupt */
-	(void)bcm_uart_readl(port, UART_EXTINP_REG);
-
-	/* set rx/tx fifo thresh to fifo half size */
-	val = bcm_uart_readl(port, UART_MCTL_REG);
-	val &= ~(UART_MCTL_RXFIFOTHRESH_MASK | UART_MCTL_TXFIFOTHRESH_MASK);
-	val |= (port->fifosize / 2) << UART_MCTL_RXFIFOTHRESH_SHIFT;
-	val |= (port->fifosize / 2) << UART_MCTL_TXFIFOTHRESH_SHIFT;
-	bcm_uart_writel(port, val, UART_MCTL_REG);
-
-	/* set rx fifo timeout to 1 char time */
-	val = bcm_uart_readl(port, UART_CTL_REG);
-	val &= ~UART_CTL_RXTMOUTCNT_MASK;
-	val |= 1 << UART_CTL_RXTMOUTCNT_SHIFT;
-	bcm_uart_writel(port, val, UART_CTL_REG);
-
-	/* report any edge on dcd and cts */
-	val = UART_EXTINP_INT_MASK;
-	val |= UART_EXTINP_DCD_NOSENSE_MASK;
-	val |= UART_EXTINP_CTS_NOSENSE_MASK;
-	bcm_uart_writel(port, val, UART_EXTINP_REG);
-
-	/* register irq and enable rx interrupts */
-	ret = request_irq(port->irq, bcm_uart_interrupt, 0,
-			  bcm_uart_type(port), port);
-	if (ret)
-		return ret;
-	bcm_uart_writel(port, UART_RX_INT_MASK, UART_IR_REG);
-	bcm_uart_enable(port);
-	return 0;
-}
-
-/*
- * serial core request to flush & disable uart
- */
-static void bcm_uart_shutdown(struct uart_port *port)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&port->lock, flags);
-	bcm_uart_writel(port, 0, UART_IR_REG);
-	spin_unlock_irqrestore(&port->lock, flags);
-
-	bcm_uart_disable(port);
-	bcm_uart_flush(port);
-	free_irq(port->irq, port);
-}
-
-/*
- * serial core request to change current uart setting
- */
-static void bcm_uart_set_termios(struct uart_port *port,
-				 struct ktermios *new,
-				 struct ktermios *old)
-{
-	unsigned int ctl, baud, quot, ier;
-	unsigned long flags;
-
-	spin_lock_irqsave(&port->lock, flags);
-
-	/* disable uart while changing speed */
-	bcm_uart_disable(port);
-	bcm_uart_flush(port);
-
-	/* update Control register */
-	ctl = bcm_uart_readl(port, UART_CTL_REG);
-	ctl &= ~UART_CTL_BITSPERSYM_MASK;
-
-	switch (new->c_cflag & CSIZE) {
-	case CS5:
-		ctl |= (0 << UART_CTL_BITSPERSYM_SHIFT);
-		break;
-	case CS6:
-		ctl |= (1 << UART_CTL_BITSPERSYM_SHIFT);
-		break;
-	case CS7:
-		ctl |= (2 << UART_CTL_BITSPERSYM_SHIFT);
-		break;
-	default:
-		ctl |= (3 << UART_CTL_BITSPERSYM_SHIFT);
-		break;
-	}
-
-	ctl &= ~UART_CTL_STOPBITS_MASK;
-	if (new->c_cflag & CSTOPB)
-		ctl |= UART_CTL_STOPBITS_2;
-	else
-		ctl |= UART_CTL_STOPBITS_1;
-
-	ctl &= ~(UART_CTL_RXPAREN_MASK | UART_CTL_TXPAREN_MASK);
-	if (new->c_cflag & PARENB)
-		ctl |= (UART_CTL_RXPAREN_MASK | UART_CTL_TXPAREN_MASK);
-	ctl &= ~(UART_CTL_RXPAREVEN_MASK | UART_CTL_TXPAREVEN_MASK);
-	if (new->c_cflag & PARODD)
-		ctl |= (UART_CTL_RXPAREVEN_MASK | UART_CTL_TXPAREVEN_MASK);
-	bcm_uart_writel(port, ctl, UART_CTL_REG);
-
-	/* update Baudword register */
-	baud = uart_get_baud_rate(port, new, old, 0, port->uartclk / 16);
-	quot = uart_get_divisor(port, baud) - 1;
-	bcm_uart_writel(port, quot, UART_BAUD_REG);
-
-	/* update Interrupt register */
-	ier = bcm_uart_readl(port, UART_IR_REG);
-
-	ier &= ~UART_IR_MASK(UART_IR_EXTIP);
-	if (UART_ENABLE_MS(port, new->c_cflag))
-		ier |= UART_IR_MASK(UART_IR_EXTIP);
-
-	bcm_uart_writel(port, ier, UART_IR_REG);
-
-	/* update read/ignore mask */
-	port->read_status_mask = UART_FIFO_VALID_MASK;
-	if (new->c_iflag & INPCK) {
-		port->read_status_mask |= UART_FIFO_FRAMEERR_MASK;
-		port->read_status_mask |= UART_FIFO_PARERR_MASK;
-	}
-	if (new->c_iflag & (BRKINT))
-		port->read_status_mask |= UART_FIFO_BRKDET_MASK;
-
-	port->ignore_status_mask = 0;
-	if (new->c_iflag & IGNPAR)
-		port->ignore_status_mask |= UART_FIFO_PARERR_MASK;
-	if (new->c_iflag & IGNBRK)
-		port->ignore_status_mask |= UART_FIFO_BRKDET_MASK;
-	if (!(new->c_cflag & CREAD))
-		port->ignore_status_mask |= UART_FIFO_VALID_MASK;
-
-	uart_update_timeout(port, new->c_cflag, baud);
-	bcm_uart_enable(port);
-	spin_unlock_irqrestore(&port->lock, flags);
-}
-
-/*
- * serial core request to claim uart iomem
- */
-static int bcm_uart_request_port(struct uart_port *port)
-{
-	unsigned int size;
-
-	size = RSET_UART_SIZE;
-	if (!request_mem_region(port->mapbase, size, "bcm63xx")) {
-		dev_err(port->dev, "Memory region busy\n");
-		return -EBUSY;
-	}
-
-	port->membase = ioremap(port->mapbase, size);
-	if (!port->membase) {
-		dev_err(port->dev, "Unable to map registers\n");
-		release_mem_region(port->mapbase, size);
-		return -EBUSY;
-	}
-	return 0;
-}
-
-/*
- * serial core request to release uart iomem
- */
-static void bcm_uart_release_port(struct uart_port *port)
-{
-	release_mem_region(port->mapbase, RSET_UART_SIZE);
-	iounmap(port->membase);
-}
-
-/*
- * serial core request to do any port required autoconfiguration
- */
-static void bcm_uart_config_port(struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE) {
-		if (bcm_uart_request_port(port))
-			return;
-		port->type = PORT_BCM63XX;
-	}
-}
-
-/*
- * serial core request to check that port information in serinfo are
- * suitable
- */
-static int bcm_uart_verify_port(struct uart_port *port,
-				struct serial_struct *serinfo)
-{
-	if (port->type != PORT_BCM63XX)
-		return -EINVAL;
-	if (port->irq != serinfo->irq)
-		return -EINVAL;
-	if (port->iotype != serinfo->io_type)
-		return -EINVAL;
-	if (port->mapbase != (unsigned long)serinfo->iomem_base)
-		return -EINVAL;
-	return 0;
-}
-
-/* serial core callbacks */
-static struct uart_ops bcm_uart_ops = {
-	.tx_empty	= bcm_uart_tx_empty,
-	.get_mctrl	= bcm_uart_get_mctrl,
-	.set_mctrl	= bcm_uart_set_mctrl,
-	.start_tx	= bcm_uart_start_tx,
-	.stop_tx	= bcm_uart_stop_tx,
-	.stop_rx	= bcm_uart_stop_rx,
-	.enable_ms	= bcm_uart_enable_ms,
-	.break_ctl	= bcm_uart_break_ctl,
-	.startup	= bcm_uart_startup,
-	.shutdown	= bcm_uart_shutdown,
-	.set_termios	= bcm_uart_set_termios,
-	.type		= bcm_uart_type,
-	.release_port	= bcm_uart_release_port,
-	.request_port	= bcm_uart_request_port,
-	.config_port	= bcm_uart_config_port,
-	.verify_port	= bcm_uart_verify_port,
-};
-
-
-
-#ifdef CONFIG_SERIAL_BCM63XX_CONSOLE
-static inline void wait_for_xmitr(struct uart_port *port)
-{
-	unsigned int tmout;
-
-	/* Wait up to 10ms for the character(s) to be sent. */
-	tmout = 10000;
-	while (--tmout) {
-		unsigned int val;
-
-		val = bcm_uart_readl(port, UART_IR_REG);
-		if (val & UART_IR_STAT(UART_IR_TXEMPTY))
-			break;
-		udelay(1);
-	}
-
-	/* Wait up to 1s for flow control if necessary */
-	if (port->flags & UPF_CONS_FLOW) {
-		tmout = 1000000;
-		while (--tmout) {
-			unsigned int val;
-
-			val = bcm_uart_readl(port, UART_EXTINP_REG);
-			if (val & UART_EXTINP_CTS_MASK)
-				break;
-			udelay(1);
-		}
-	}
-}
-
-/*
- * output given char
- */
-static void bcm_console_putchar(struct uart_port *port, int ch)
-{
-	wait_for_xmitr(port);
-	bcm_uart_writel(port, ch, UART_FIFO_REG);
-}
-
-/*
- * console core request to output given string
- */
-static void bcm_console_write(struct console *co, const char *s,
-			      unsigned int count)
-{
-	struct uart_port *port;
-	unsigned long flags;
-	int locked;
-
-	port = &ports[co->index];
-
-	local_irq_save(flags);
-	if (port->sysrq) {
-		/* bcm_uart_interrupt() already took the lock */
-		locked = 0;
-	} else if (oops_in_progress) {
-		locked = spin_trylock(&port->lock);
-	} else {
-		spin_lock(&port->lock);
-		locked = 1;
-	}
-
-	/* call helper to deal with \r\n */
-	uart_console_write(port, s, count, bcm_console_putchar);
-
-	/* and wait for char to be transmitted */
-	wait_for_xmitr(port);
-
-	if (locked)
-		spin_unlock(&port->lock);
-	local_irq_restore(flags);
-}
-
-/*
- * console core request to setup given console, find matching uart
- * port and setup it.
- */
-static int bcm_console_setup(struct console *co, char *options)
-{
-	struct uart_port *port;
-	int baud = 9600;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-
-	if (co->index < 0 || co->index >= BCM63XX_NR_UARTS)
-		return -EINVAL;
-	port = &ports[co->index];
-	if (!port->membase)
-		return -ENODEV;
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-
-	return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver bcm_uart_driver;
-
-static struct console bcm63xx_console = {
-	.name		= "ttyS",
-	.write		= bcm_console_write,
-	.device		= uart_console_device,
-	.setup		= bcm_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &bcm_uart_driver,
-};
-
-static int __init bcm63xx_console_init(void)
-{
-	register_console(&bcm63xx_console);
-	return 0;
-}
-
-console_initcall(bcm63xx_console_init);
-
-#define BCM63XX_CONSOLE	(&bcm63xx_console)
-#else
-#define BCM63XX_CONSOLE	NULL
-#endif /* CONFIG_SERIAL_BCM63XX_CONSOLE */
-
-static struct uart_driver bcm_uart_driver = {
-	.owner		= THIS_MODULE,
-	.driver_name	= "bcm63xx_uart",
-	.dev_name	= "ttyS",
-	.major		= TTY_MAJOR,
-	.minor		= 64,
-	.nr		= BCM63XX_NR_UARTS,
-	.cons		= BCM63XX_CONSOLE,
-};
-
-/*
- * platform driver probe/remove callback
- */
-static int __devinit bcm_uart_probe(struct platform_device *pdev)
-{
-	struct resource *res_mem, *res_irq;
-	struct uart_port *port;
-	struct clk *clk;
-	int ret;
-
-	if (pdev->id < 0 || pdev->id >= BCM63XX_NR_UARTS)
-		return -EINVAL;
-
-	if (ports[pdev->id].membase)
-		return -EBUSY;
-
-	res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res_mem)
-		return -ENODEV;
-
-	res_irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
-	if (!res_irq)
-		return -ENODEV;
-
-	clk = clk_get(&pdev->dev, "periph");
-	if (IS_ERR(clk))
-		return -ENODEV;
-
-	port = &ports[pdev->id];
-	memset(port, 0, sizeof(*port));
-	port->iotype = UPIO_MEM;
-	port->mapbase = res_mem->start;
-	port->irq = res_irq->start;
-	port->ops = &bcm_uart_ops;
-	port->flags = UPF_BOOT_AUTOCONF;
-	port->dev = &pdev->dev;
-	port->fifosize = 16;
-	port->uartclk = clk_get_rate(clk) / 2;
-	port->line = pdev->id;
-	clk_put(clk);
-
-	ret = uart_add_one_port(&bcm_uart_driver, port);
-	if (ret) {
-		ports[pdev->id].membase = 0;
-		return ret;
-	}
-	platform_set_drvdata(pdev, port);
-	return 0;
-}
-
-static int __devexit bcm_uart_remove(struct platform_device *pdev)
-{
-	struct uart_port *port;
-
-	port = platform_get_drvdata(pdev);
-	uart_remove_one_port(&bcm_uart_driver, port);
-	platform_set_drvdata(pdev, NULL);
-	/* mark port as free */
-	ports[pdev->id].membase = 0;
-	return 0;
-}
-
-/*
- * platform driver stuff
- */
-static struct platform_driver bcm_uart_platform_driver = {
-	.probe	= bcm_uart_probe,
-	.remove	= __devexit_p(bcm_uart_remove),
-	.driver	= {
-		.owner = THIS_MODULE,
-		.name  = "bcm63xx_uart",
-	},
-};
-
-static int __init bcm_uart_init(void)
-{
-	int ret;
-
-	ret = uart_register_driver(&bcm_uart_driver);
-	if (ret)
-		return ret;
-
-	ret = platform_driver_register(&bcm_uart_platform_driver);
-	if (ret)
-		uart_unregister_driver(&bcm_uart_driver);
-
-	return ret;
-}
-
-static void __exit bcm_uart_exit(void)
-{
-	platform_driver_unregister(&bcm_uart_platform_driver);
-	uart_unregister_driver(&bcm_uart_driver);
-}
-
-module_init(bcm_uart_init);
-module_exit(bcm_uart_exit);
-
-MODULE_AUTHOR("Maxime Bizon <mbizon@freebox.fr>");
-MODULE_DESCRIPTION("Broadcom 63<xx integrated uart driver");
-MODULE_LICENSE("GPL");