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, 825 deletions

diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
deleted file mode 100644
index 2904aa0..0000000
--- a/drivers/serial/amba-pl010.c
+++ /dev/null
@@ -1,825 +0,0 @@
-/*
- *  linux/drivers/char/amba.c
- *
- *  Driver for AMBA serial ports
- *
- *  Based on drivers/char/serial.c, by Linus Torvalds, Theodore Ts'o.
- *
- *  Copyright 1999 ARM Limited
- *  Copyright (C) 2000 Deep Blue Solutions Ltd.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- * This is a generic driver for ARM AMBA-type serial ports.  They
- * have a lot of 16550-like features, but are not register compatible.
- * Note that although they do have CTS, DCD and DSR inputs, they do
- * not have an RI input, nor do they have DTR or RTS outputs.  If
- * required, these have to be supplied via some other means (eg, GPIO)
- * and hooked into this driver.
- */
-
-#if defined(CONFIG_SERIAL_AMBA_PL010_CONSOLE) && defined(CONFIG_MAGIC_SYSRQ)
-#define SUPPORT_SYSRQ
-#endif
-
-#include <linux/module.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/device.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/serial_core.h>
-#include <linux/serial.h>
-#include <linux/amba/bus.h>
-#include <linux/amba/serial.h>
-#include <linux/clk.h>
-#include <linux/slab.h>
-
-#include <asm/io.h>
-
-#define UART_NR		8
-
-#define SERIAL_AMBA_MAJOR	204
-#define SERIAL_AMBA_MINOR	16
-#define SERIAL_AMBA_NR		UART_NR
-
-#define AMBA_ISR_PASS_LIMIT	256
-
-#define UART_RX_DATA(s)		(((s) & UART01x_FR_RXFE) == 0)
-#define UART_TX_READY(s)	(((s) & UART01x_FR_TXFF) == 0)
-
-#define UART_DUMMY_RSR_RX	256
-#define UART_PORT_SIZE		64
-
-/*
- * We wrap our port structure around the generic uart_port.
- */
-struct uart_amba_port {
-	struct uart_port	port;
-	struct clk		*clk;
-	struct amba_device	*dev;
-	struct amba_pl010_data	*data;
-	unsigned int		old_status;
-};
-
-static void pl010_stop_tx(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int cr;
-
-	cr = readb(uap->port.membase + UART010_CR);
-	cr &= ~UART010_CR_TIE;
-	writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_start_tx(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int cr;
-
-	cr = readb(uap->port.membase + UART010_CR);
-	cr |= UART010_CR_TIE;
-	writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_stop_rx(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int cr;
-
-	cr = readb(uap->port.membase + UART010_CR);
-	cr &= ~(UART010_CR_RIE | UART010_CR_RTIE);
-	writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_enable_ms(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int cr;
-
-	cr = readb(uap->port.membase + UART010_CR);
-	cr |= UART010_CR_MSIE;
-	writel(cr, uap->port.membase + UART010_CR);
-}
-
-static void pl010_rx_chars(struct uart_amba_port *uap)
-{
-	struct tty_struct *tty = uap->port.state->port.tty;
-	unsigned int status, ch, flag, rsr, max_count = 256;
-
-	status = readb(uap->port.membase + UART01x_FR);
-	while (UART_RX_DATA(status) && max_count--) {
-		ch = readb(uap->port.membase + UART01x_DR);
-		flag = TTY_NORMAL;
-
-		uap->port.icount.rx++;
-
-		/*
-		 * Note that the error handling code is
-		 * out of the main execution path
-		 */
-		rsr = readb(uap->port.membase + UART01x_RSR) | UART_DUMMY_RSR_RX;
-		if (unlikely(rsr & UART01x_RSR_ANY)) {
-			writel(0, uap->port.membase + UART01x_ECR);
-
-			if (rsr & UART01x_RSR_BE) {
-				rsr &= ~(UART01x_RSR_FE | UART01x_RSR_PE);
-				uap->port.icount.brk++;
-				if (uart_handle_break(&uap->port))
-					goto ignore_char;
-			} else if (rsr & UART01x_RSR_PE)
-				uap->port.icount.parity++;
-			else if (rsr & UART01x_RSR_FE)
-				uap->port.icount.frame++;
-			if (rsr & UART01x_RSR_OE)
-				uap->port.icount.overrun++;
-
-			rsr &= uap->port.read_status_mask;
-
-			if (rsr & UART01x_RSR_BE)
-				flag = TTY_BREAK;
-			else if (rsr & UART01x_RSR_PE)
-				flag = TTY_PARITY;
-			else if (rsr & UART01x_RSR_FE)
-				flag = TTY_FRAME;
-		}
-
-		if (uart_handle_sysrq_char(&uap->port, ch))
-			goto ignore_char;
-
-		uart_insert_char(&uap->port, rsr, UART01x_RSR_OE, ch, flag);
-
-	ignore_char:
-		status = readb(uap->port.membase + UART01x_FR);
-	}
-	spin_unlock(&uap->port.lock);
-	tty_flip_buffer_push(tty);
-	spin_lock(&uap->port.lock);
-}
-
-static void pl010_tx_chars(struct uart_amba_port *uap)
-{
-	struct circ_buf *xmit = &uap->port.state->xmit;
-	int count;
-
-	if (uap->port.x_char) {
-		writel(uap->port.x_char, uap->port.membase + UART01x_DR);
-		uap->port.icount.tx++;
-		uap->port.x_char = 0;
-		return;
-	}
-	if (uart_circ_empty(xmit) || uart_tx_stopped(&uap->port)) {
-		pl010_stop_tx(&uap->port);
-		return;
-	}
-
-	count = uap->port.fifosize >> 1;
-	do {
-		writel(xmit->buf[xmit->tail], uap->port.membase + UART01x_DR);
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		uap->port.icount.tx++;
-		if (uart_circ_empty(xmit))
-			break;
-	} while (--count > 0);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(&uap->port);
-
-	if (uart_circ_empty(xmit))
-		pl010_stop_tx(&uap->port);
-}
-
-static void pl010_modem_status(struct uart_amba_port *uap)
-{
-	unsigned int status, delta;
-
-	writel(0, uap->port.membase + UART010_ICR);
-
-	status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
-
-	delta = status ^ uap->old_status;
-	uap->old_status = status;
-
-	if (!delta)
-		return;
-
-	if (delta & UART01x_FR_DCD)
-		uart_handle_dcd_change(&uap->port, status & UART01x_FR_DCD);
-
-	if (delta & UART01x_FR_DSR)
-		uap->port.icount.dsr++;
-
-	if (delta & UART01x_FR_CTS)
-		uart_handle_cts_change(&uap->port, status & UART01x_FR_CTS);
-
-	wake_up_interruptible(&uap->port.state->port.delta_msr_wait);
-}
-
-static irqreturn_t pl010_int(int irq, void *dev_id)
-{
-	struct uart_amba_port *uap = dev_id;
-	unsigned int status, pass_counter = AMBA_ISR_PASS_LIMIT;
-	int handled = 0;
-
-	spin_lock(&uap->port.lock);
-
-	status = readb(uap->port.membase + UART010_IIR);
-	if (status) {
-		do {
-			if (status & (UART010_IIR_RTIS | UART010_IIR_RIS))
-				pl010_rx_chars(uap);
-			if (status & UART010_IIR_MIS)
-				pl010_modem_status(uap);
-			if (status & UART010_IIR_TIS)
-				pl010_tx_chars(uap);
-
-			if (pass_counter-- == 0)
-				break;
-
-			status = readb(uap->port.membase + UART010_IIR);
-		} while (status & (UART010_IIR_RTIS | UART010_IIR_RIS |
-				   UART010_IIR_TIS));
-		handled = 1;
-	}
-
-	spin_unlock(&uap->port.lock);
-
-	return IRQ_RETVAL(handled);
-}
-
-static unsigned int pl010_tx_empty(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int status = readb(uap->port.membase + UART01x_FR);
-	return status & UART01x_FR_BUSY ? 0 : TIOCSER_TEMT;
-}
-
-static unsigned int pl010_get_mctrl(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int result = 0;
-	unsigned int status;
-
-	status = readb(uap->port.membase + UART01x_FR);
-	if (status & UART01x_FR_DCD)
-		result |= TIOCM_CAR;
-	if (status & UART01x_FR_DSR)
-		result |= TIOCM_DSR;
-	if (status & UART01x_FR_CTS)
-		result |= TIOCM_CTS;
-
-	return result;
-}
-
-static void pl010_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-
-	if (uap->data)
-		uap->data->set_mctrl(uap->dev, uap->port.membase, mctrl);
-}
-
-static void pl010_break_ctl(struct uart_port *port, int break_state)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned long flags;
-	unsigned int lcr_h;
-
-	spin_lock_irqsave(&uap->port.lock, flags);
-	lcr_h = readb(uap->port.membase + UART010_LCRH);
-	if (break_state == -1)
-		lcr_h |= UART01x_LCRH_BRK;
-	else
-		lcr_h &= ~UART01x_LCRH_BRK;
-	writel(lcr_h, uap->port.membase + UART010_LCRH);
-	spin_unlock_irqrestore(&uap->port.lock, flags);
-}
-
-static int pl010_startup(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	int retval;
-
-	/*
-	 * Try to enable the clock producer.
-	 */
-	retval = clk_enable(uap->clk);
-	if (retval)
-		goto out;
-
-	uap->port.uartclk = clk_get_rate(uap->clk);
-
-	/*
-	 * Allocate the IRQ
-	 */
-	retval = request_irq(uap->port.irq, pl010_int, 0, "uart-pl010", uap);
-	if (retval)
-		goto clk_dis;
-
-	/*
-	 * initialise the old status of the modem signals
-	 */
-	uap->old_status = readb(uap->port.membase + UART01x_FR) & UART01x_FR_MODEM_ANY;
-
-	/*
-	 * Finally, enable interrupts
-	 */
-	writel(UART01x_CR_UARTEN | UART010_CR_RIE | UART010_CR_RTIE,
-	       uap->port.membase + UART010_CR);
-
-	return 0;
-
- clk_dis:
-	clk_disable(uap->clk);
- out:
-	return retval;
-}
-
-static void pl010_shutdown(struct uart_port *port)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-
-	/*
-	 * Free the interrupt
-	 */
-	free_irq(uap->port.irq, uap);
-
-	/*
-	 * disable all interrupts, disable the port
-	 */
-	writel(0, uap->port.membase + UART010_CR);
-
-	/* disable break condition and fifos */
-	writel(readb(uap->port.membase + UART010_LCRH) &
-		~(UART01x_LCRH_BRK | UART01x_LCRH_FEN),
-	       uap->port.membase + UART010_LCRH);
-
-	/*
-	 * Shut down the clock producer
-	 */
-	clk_disable(uap->clk);
-}
-
-static void
-pl010_set_termios(struct uart_port *port, struct ktermios *termios,
-		     struct ktermios *old)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int lcr_h, old_cr;
-	unsigned long flags;
-	unsigned int baud, quot;
-
-	/*
-	 * Ask the core to calculate the divisor for us.
-	 */
-	baud = uart_get_baud_rate(port, termios, old, 0, uap->port.uartclk/16); 
-	quot = uart_get_divisor(port, baud);
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS5:
-		lcr_h = UART01x_LCRH_WLEN_5;
-		break;
-	case CS6:
-		lcr_h = UART01x_LCRH_WLEN_6;
-		break;
-	case CS7:
-		lcr_h = UART01x_LCRH_WLEN_7;
-		break;
-	default: // CS8
-		lcr_h = UART01x_LCRH_WLEN_8;
-		break;
-	}
-	if (termios->c_cflag & CSTOPB)
-		lcr_h |= UART01x_LCRH_STP2;
-	if (termios->c_cflag & PARENB) {
-		lcr_h |= UART01x_LCRH_PEN;
-		if (!(termios->c_cflag & PARODD))
-			lcr_h |= UART01x_LCRH_EPS;
-	}
-	if (uap->port.fifosize > 1)
-		lcr_h |= UART01x_LCRH_FEN;
-
-	spin_lock_irqsave(&uap->port.lock, flags);
-
-	/*
-	 * Update the per-port timeout.
-	 */
-	uart_update_timeout(port, termios->c_cflag, baud);
-
-	uap->port.read_status_mask = UART01x_RSR_OE;
-	if (termios->c_iflag & INPCK)
-		uap->port.read_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
-	if (termios->c_iflag & (BRKINT | PARMRK))
-		uap->port.read_status_mask |= UART01x_RSR_BE;
-
-	/*
-	 * Characters to ignore
-	 */
-	uap->port.ignore_status_mask = 0;
-	if (termios->c_iflag & IGNPAR)
-		uap->port.ignore_status_mask |= UART01x_RSR_FE | UART01x_RSR_PE;
-	if (termios->c_iflag & IGNBRK) {
-		uap->port.ignore_status_mask |= UART01x_RSR_BE;
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns too (for real raw support).
-		 */
-		if (termios->c_iflag & IGNPAR)
-			uap->port.ignore_status_mask |= UART01x_RSR_OE;
-	}
-
-	/*
-	 * Ignore all characters if CREAD is not set.
-	 */
-	if ((termios->c_cflag & CREAD) == 0)
-		uap->port.ignore_status_mask |= UART_DUMMY_RSR_RX;
-
-	/* first, disable everything */
-	old_cr = readb(uap->port.membase + UART010_CR) & ~UART010_CR_MSIE;
-
-	if (UART_ENABLE_MS(port, termios->c_cflag))
-		old_cr |= UART010_CR_MSIE;
-
-	writel(0, uap->port.membase + UART010_CR);
-
-	/* Set baud rate */
-	quot -= 1;
-	writel((quot & 0xf00) >> 8, uap->port.membase + UART010_LCRM);
-	writel(quot & 0xff, uap->port.membase + UART010_LCRL);
-
-	/*
-	 * ----------v----------v----------v----------v-----
-	 * NOTE: MUST BE WRITTEN AFTER UARTLCR_M & UARTLCR_L
-	 * ----------^----------^----------^----------^-----
-	 */
-	writel(lcr_h, uap->port.membase + UART010_LCRH);
-	writel(old_cr, uap->port.membase + UART010_CR);
-
-	spin_unlock_irqrestore(&uap->port.lock, flags);
-}
-
-static void pl010_set_ldisc(struct uart_port *port, int new)
-{
-	if (new == N_PPS) {
-		port->flags |= UPF_HARDPPS_CD;
-		pl010_enable_ms(port);
-	} else
-		port->flags &= ~UPF_HARDPPS_CD;
-}
-
-static const char *pl010_type(struct uart_port *port)
-{
-	return port->type == PORT_AMBA ? "AMBA" : NULL;
-}
-
-/*
- * Release the memory region(s) being used by 'port'
- */
-static void pl010_release_port(struct uart_port *port)
-{
-	release_mem_region(port->mapbase, UART_PORT_SIZE);
-}
-
-/*
- * Request the memory region(s) being used by 'port'
- */
-static int pl010_request_port(struct uart_port *port)
-{
-	return request_mem_region(port->mapbase, UART_PORT_SIZE, "uart-pl010")
-			!= NULL ? 0 : -EBUSY;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void pl010_config_port(struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE) {
-		port->type = PORT_AMBA;
-		pl010_request_port(port);
-	}
-}
-
-/*
- * verify the new serial_struct (for TIOCSSERIAL).
- */
-static int pl010_verify_port(struct uart_port *port, struct serial_struct *ser)
-{
-	int ret = 0;
-	if (ser->type != PORT_UNKNOWN && ser->type != PORT_AMBA)
-		ret = -EINVAL;
-	if (ser->irq < 0 || ser->irq >= nr_irqs)
-		ret = -EINVAL;
-	if (ser->baud_base < 9600)
-		ret = -EINVAL;
-	return ret;
-}
-
-static struct uart_ops amba_pl010_pops = {
-	.tx_empty	= pl010_tx_empty,
-	.set_mctrl	= pl010_set_mctrl,
-	.get_mctrl	= pl010_get_mctrl,
-	.stop_tx	= pl010_stop_tx,
-	.start_tx	= pl010_start_tx,
-	.stop_rx	= pl010_stop_rx,
-	.enable_ms	= pl010_enable_ms,
-	.break_ctl	= pl010_break_ctl,
-	.startup	= pl010_startup,
-	.shutdown	= pl010_shutdown,
-	.set_termios	= pl010_set_termios,
-	.set_ldisc	= pl010_set_ldisc,
-	.type		= pl010_type,
-	.release_port	= pl010_release_port,
-	.request_port	= pl010_request_port,
-	.config_port	= pl010_config_port,
-	.verify_port	= pl010_verify_port,
-};
-
-static struct uart_amba_port *amba_ports[UART_NR];
-
-#ifdef CONFIG_SERIAL_AMBA_PL010_CONSOLE
-
-static void pl010_console_putchar(struct uart_port *port, int ch)
-{
-	struct uart_amba_port *uap = (struct uart_amba_port *)port;
-	unsigned int status;
-
-	do {
-		status = readb(uap->port.membase + UART01x_FR);
-		barrier();
-	} while (!UART_TX_READY(status));
-	writel(ch, uap->port.membase + UART01x_DR);
-}
-
-static void
-pl010_console_write(struct console *co, const char *s, unsigned int count)
-{
-	struct uart_amba_port *uap = amba_ports[co->index];
-	unsigned int status, old_cr;
-
-	clk_enable(uap->clk);
-
-	/*
-	 *	First save the CR then disable the interrupts
-	 */
-	old_cr = readb(uap->port.membase + UART010_CR);
-	writel(UART01x_CR_UARTEN, uap->port.membase + UART010_CR);
-
-	uart_console_write(&uap->port, s, count, pl010_console_putchar);
-
-	/*
-	 *	Finally, wait for transmitter to become empty
-	 *	and restore the TCR
-	 */
-	do {
-		status = readb(uap->port.membase + UART01x_FR);
-		barrier();
-	} while (status & UART01x_FR_BUSY);
-	writel(old_cr, uap->port.membase + UART010_CR);
-
-	clk_disable(uap->clk);
-}
-
-static void __init
-pl010_console_get_options(struct uart_amba_port *uap, int *baud,
-			     int *parity, int *bits)
-{
-	if (readb(uap->port.membase + UART010_CR) & UART01x_CR_UARTEN) {
-		unsigned int lcr_h, quot;
-		lcr_h = readb(uap->port.membase + UART010_LCRH);
-
-		*parity = 'n';
-		if (lcr_h & UART01x_LCRH_PEN) {
-			if (lcr_h & UART01x_LCRH_EPS)
-				*parity = 'e';
-			else
-				*parity = 'o';
-		}
-
-		if ((lcr_h & 0x60) == UART01x_LCRH_WLEN_7)
-			*bits = 7;
-		else
-			*bits = 8;
-
-		quot = readb(uap->port.membase + UART010_LCRL) |
-		       readb(uap->port.membase + UART010_LCRM) << 8;
-		*baud = uap->port.uartclk / (16 * (quot + 1));
-	}
-}
-
-static int __init pl010_console_setup(struct console *co, char *options)
-{
-	struct uart_amba_port *uap;
-	int baud = 38400;
-	int bits = 8;
-	int parity = 'n';
-	int flow = 'n';
-
-	/*
-	 * Check whether an invalid uart number has been specified, and
-	 * if so, search for the first available port that does have
-	 * console support.
-	 */
-	if (co->index >= UART_NR)
-		co->index = 0;
-	uap = amba_ports[co->index];
-	if (!uap)
-		return -ENODEV;
-
-	uap->port.uartclk = clk_get_rate(uap->clk);
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	else
-		pl010_console_get_options(uap, &baud, &parity, &bits);
-
-	return uart_set_options(&uap->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver amba_reg;
-static struct console amba_console = {
-	.name		= "ttyAM",
-	.write		= pl010_console_write,
-	.device		= uart_console_device,
-	.setup		= pl010_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &amba_reg,
-};
-
-#define AMBA_CONSOLE	&amba_console
-#else
-#define AMBA_CONSOLE	NULL
-#endif
-
-static struct uart_driver amba_reg = {
-	.owner			= THIS_MODULE,
-	.driver_name		= "ttyAM",
-	.dev_name		= "ttyAM",
-	.major			= SERIAL_AMBA_MAJOR,
-	.minor			= SERIAL_AMBA_MINOR,
-	.nr			= UART_NR,
-	.cons			= AMBA_CONSOLE,
-};
-
-static int pl010_probe(struct amba_device *dev, struct amba_id *id)
-{
-	struct uart_amba_port *uap;
-	void __iomem *base;
-	int i, ret;
-
-	for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
-		if (amba_ports[i] == NULL)
-			break;
-
-	if (i == ARRAY_SIZE(amba_ports)) {
-		ret = -EBUSY;
-		goto out;
-	}
-
-	uap = kzalloc(sizeof(struct uart_amba_port), GFP_KERNEL);
-	if (!uap) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
-	base = ioremap(dev->res.start, resource_size(&dev->res));
-	if (!base) {
-		ret = -ENOMEM;
-		goto free;
-	}
-
-	uap->clk = clk_get(&dev->dev, NULL);
-	if (IS_ERR(uap->clk)) {
-		ret = PTR_ERR(uap->clk);
-		goto unmap;
-	}
-
-	uap->port.dev = &dev->dev;
-	uap->port.mapbase = dev->res.start;
-	uap->port.membase = base;
-	uap->port.iotype = UPIO_MEM;
-	uap->port.irq = dev->irq[0];
-	uap->port.fifosize = 16;
-	uap->port.ops = &amba_pl010_pops;
-	uap->port.flags = UPF_BOOT_AUTOCONF;
-	uap->port.line = i;
-	uap->dev = dev;
-	uap->data = dev->dev.platform_data;
-
-	amba_ports[i] = uap;
-
-	amba_set_drvdata(dev, uap);
-	ret = uart_add_one_port(&amba_reg, &uap->port);
-	if (ret) {
-		amba_set_drvdata(dev, NULL);
-		amba_ports[i] = NULL;
-		clk_put(uap->clk);
- unmap:
-		iounmap(base);
- free:
-		kfree(uap);
-	}
- out:
-	return ret;
-}
-
-static int pl010_remove(struct amba_device *dev)
-{
-	struct uart_amba_port *uap = amba_get_drvdata(dev);
-	int i;
-
-	amba_set_drvdata(dev, NULL);
-
-	uart_remove_one_port(&amba_reg, &uap->port);
-
-	for (i = 0; i < ARRAY_SIZE(amba_ports); i++)
-		if (amba_ports[i] == uap)
-			amba_ports[i] = NULL;
-
-	iounmap(uap->port.membase);
-	clk_put(uap->clk);
-	kfree(uap);
-	return 0;
-}
-
-static int pl010_suspend(struct amba_device *dev, pm_message_t state)
-{
-	struct uart_amba_port *uap = amba_get_drvdata(dev);
-
-	if (uap)
-		uart_suspend_port(&amba_reg, &uap->port);
-
-	return 0;
-}
-
-static int pl010_resume(struct amba_device *dev)
-{
-	struct uart_amba_port *uap = amba_get_drvdata(dev);
-
-	if (uap)
-		uart_resume_port(&amba_reg, &uap->port);
-
-	return 0;
-}
-
-static struct amba_id pl010_ids[] = {
-	{
-		.id	= 0x00041010,
-		.mask	= 0x000fffff,
-	},
-	{ 0, 0 },
-};
-
-static struct amba_driver pl010_driver = {
-	.drv = {
-		.name	= "uart-pl010",
-	},
-	.id_table	= pl010_ids,
-	.probe		= pl010_probe,
-	.remove		= pl010_remove,
-	.suspend	= pl010_suspend,
-	.resume		= pl010_resume,
-};
-
-static int __init pl010_init(void)
-{
-	int ret;
-
-	printk(KERN_INFO "Serial: AMBA driver\n");
-
-	ret = uart_register_driver(&amba_reg);
-	if (ret == 0) {
-		ret = amba_driver_register(&pl010_driver);
-		if (ret)
-			uart_unregister_driver(&amba_reg);
-	}
-	return ret;
-}
-
-static void __exit pl010_exit(void)
-{
-	amba_driver_unregister(&pl010_driver);
-	uart_unregister_driver(&amba_reg);
-}
-
-module_init(pl010_init);
-module_exit(pl010_exit);
-
-MODULE_AUTHOR("ARM Ltd/Deep Blue Solutions Ltd");
-MODULE_DESCRIPTION("ARM AMBA serial port driver");
-MODULE_LICENSE("GPL");