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, 579 deletions

diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
deleted file mode 100644
index b6acd19b458..00000000000
--- a/drivers/serial/clps711x.c
+++ /dev/null
@@ -1,579 +0,0 @@
-/*
- *  linux/drivers/char/clps711x.c
- *
- *  Driver for CLPS711x 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
- */
-
-#if defined(CONFIG_SERIAL_CLPS711X_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/spinlock.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/io.h>
-
-#include <mach/hardware.h>
-#include <asm/irq.h>
-#include <asm/hardware/clps7111.h>
-
-#define UART_NR		2
-
-#define SERIAL_CLPS711X_MAJOR	204
-#define SERIAL_CLPS711X_MINOR	40
-#define SERIAL_CLPS711X_NR	UART_NR
-
-/*
- * We use the relevant SYSCON register as a base address for these ports.
- */
-#define UBRLCR(port)		((port)->iobase + UBRLCR1 - SYSCON1)
-#define UARTDR(port)		((port)->iobase + UARTDR1 - SYSCON1)
-#define SYSFLG(port)		((port)->iobase + SYSFLG1 - SYSCON1)
-#define SYSCON(port)		((port)->iobase + SYSCON1 - SYSCON1)
-
-#define TX_IRQ(port)		((port)->irq)
-#define RX_IRQ(port)		((port)->irq + 1)
-
-#define UART_ANY_ERR		(UARTDR_FRMERR | UARTDR_PARERR | UARTDR_OVERR)
-
-#define tx_enabled(port)	((port)->unused[0])
-
-static void clps711xuart_stop_tx(struct uart_port *port)
-{
-	if (tx_enabled(port)) {
-		disable_irq(TX_IRQ(port));
-		tx_enabled(port) = 0;
-	}
-}
-
-static void clps711xuart_start_tx(struct uart_port *port)
-{
-	if (!tx_enabled(port)) {
-		enable_irq(TX_IRQ(port));
-		tx_enabled(port) = 1;
-	}
-}
-
-static void clps711xuart_stop_rx(struct uart_port *port)
-{
-	disable_irq(RX_IRQ(port));
-}
-
-static void clps711xuart_enable_ms(struct uart_port *port)
-{
-}
-
-static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id)
-{
-	struct uart_port *port = dev_id;
-	struct tty_struct *tty = port->state->port.tty;
-	unsigned int status, ch, flg;
-
-	status = clps_readl(SYSFLG(port));
-	while (!(status & SYSFLG_URXFE)) {
-		ch = clps_readl(UARTDR(port));
-
-		port->icount.rx++;
-
-		flg = TTY_NORMAL;
-
-		/*
-		 * Note that the error handling code is
-		 * out of the main execution path
-		 */
-		if (unlikely(ch & UART_ANY_ERR)) {
-			if (ch & UARTDR_PARERR)
-				port->icount.parity++;
-			else if (ch & UARTDR_FRMERR)
-				port->icount.frame++;
-			if (ch & UARTDR_OVERR)
-				port->icount.overrun++;
-
-			ch &= port->read_status_mask;
-
-			if (ch & UARTDR_PARERR)
-				flg = TTY_PARITY;
-			else if (ch & UARTDR_FRMERR)
-				flg = TTY_FRAME;
-
-#ifdef SUPPORT_SYSRQ
-			port->sysrq = 0;
-#endif
-		}
-
-		if (uart_handle_sysrq_char(port, ch))
-			goto ignore_char;
-
-		/*
-		 * CHECK: does overrun affect the current character?
-		 * ASSUMPTION: it does not.
-		 */
-		uart_insert_char(port, ch, UARTDR_OVERR, ch, flg);
-
-	ignore_char:
-		status = clps_readl(SYSFLG(port));
-	}
-	tty_flip_buffer_push(tty);
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t clps711xuart_int_tx(int irq, void *dev_id)
-{
-	struct uart_port *port = dev_id;
-	struct circ_buf *xmit = &port->state->xmit;
-	int count;
-
-	if (port->x_char) {
-		clps_writel(port->x_char, UARTDR(port));
-		port->icount.tx++;
-		port->x_char = 0;
-		return IRQ_HANDLED;
-	}
-	if (uart_circ_empty(xmit) || uart_tx_stopped(port)) {
-		clps711xuart_stop_tx(port);
-		return IRQ_HANDLED;
-	}
-
-	count = port->fifosize >> 1;
-	do {
-		clps_writel(xmit->buf[xmit->tail], UARTDR(port));
-		xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
-		port->icount.tx++;
-		if (uart_circ_empty(xmit))
-			break;
-	} while (--count > 0);
-
-	if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
-		uart_write_wakeup(port);
-
-	if (uart_circ_empty(xmit))
-		clps711xuart_stop_tx(port);
-
-	return IRQ_HANDLED;
-}
-
-static unsigned int clps711xuart_tx_empty(struct uart_port *port)
-{
-	unsigned int status = clps_readl(SYSFLG(port));
-	return status & SYSFLG_UBUSY ? 0 : TIOCSER_TEMT;
-}
-
-static unsigned int clps711xuart_get_mctrl(struct uart_port *port)
-{
-	unsigned int port_addr;
-	unsigned int result = 0;
-	unsigned int status;
-
-	port_addr = SYSFLG(port);
-	if (port_addr == SYSFLG1) {
-		status = clps_readl(SYSFLG1);
-		if (status & SYSFLG1_DCD)
-			result |= TIOCM_CAR;
-		if (status & SYSFLG1_DSR)
-			result |= TIOCM_DSR;
-		if (status & SYSFLG1_CTS)
-			result |= TIOCM_CTS;
-	}
-
-	return result;
-}
-
-static void
-clps711xuart_set_mctrl_null(struct uart_port *port, unsigned int mctrl)
-{
-}
-
-static void clps711xuart_break_ctl(struct uart_port *port, int break_state)
-{
-	unsigned long flags;
-	unsigned int ubrlcr;
-
-	spin_lock_irqsave(&port->lock, flags);
-	ubrlcr = clps_readl(UBRLCR(port));
-	if (break_state == -1)
-		ubrlcr |= UBRLCR_BREAK;
-	else
-		ubrlcr &= ~UBRLCR_BREAK;
-	clps_writel(ubrlcr, UBRLCR(port));
-	spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static int clps711xuart_startup(struct uart_port *port)
-{
-	unsigned int syscon;
-	int retval;
-
-	tx_enabled(port) = 1;
-
-	/*
-	 * Allocate the IRQs
-	 */
-	retval = request_irq(TX_IRQ(port), clps711xuart_int_tx, 0,
-			     "clps711xuart_tx", port);
-	if (retval)
-		return retval;
-
-	retval = request_irq(RX_IRQ(port), clps711xuart_int_rx, 0,
-			     "clps711xuart_rx", port);
-	if (retval) {
-		free_irq(TX_IRQ(port), port);
-		return retval;
-	}
-
-	/*
-	 * enable the port
-	 */
-	syscon = clps_readl(SYSCON(port));
-	syscon |= SYSCON_UARTEN;
-	clps_writel(syscon, SYSCON(port));
-
-	return 0;
-}
-
-static void clps711xuart_shutdown(struct uart_port *port)
-{
-	unsigned int ubrlcr, syscon;
-
-	/*
-	 * Free the interrupt
-	 */
-	free_irq(TX_IRQ(port), port);	/* TX interrupt */
-	free_irq(RX_IRQ(port), port);	/* RX interrupt */
-
-	/*
-	 * disable the port
-	 */
-	syscon = clps_readl(SYSCON(port));
-	syscon &= ~SYSCON_UARTEN;
-	clps_writel(syscon, SYSCON(port));
-
-	/*
-	 * disable break condition and fifos
-	 */
-	ubrlcr = clps_readl(UBRLCR(port));
-	ubrlcr &= ~(UBRLCR_FIFOEN | UBRLCR_BREAK);
-	clps_writel(ubrlcr, UBRLCR(port));
-}
-
-static void
-clps711xuart_set_termios(struct uart_port *port, struct ktermios *termios,
-			 struct ktermios *old)
-{
-	unsigned int ubrlcr, baud, quot;
-	unsigned long flags;
-
-	/*
-	 * We don't implement CREAD.
-	 */
-	termios->c_cflag |= CREAD;
-
-	/*
-	 * Ask the core to calculate the divisor for us.
-	 */
-	baud = uart_get_baud_rate(port, termios, old, 0, port->uartclk/16); 
-	quot = uart_get_divisor(port, baud);
-
-	switch (termios->c_cflag & CSIZE) {
-	case CS5:
-		ubrlcr = UBRLCR_WRDLEN5;
-		break;
-	case CS6:
-		ubrlcr = UBRLCR_WRDLEN6;
-		break;
-	case CS7:
-		ubrlcr = UBRLCR_WRDLEN7;
-		break;
-	default: // CS8
-		ubrlcr = UBRLCR_WRDLEN8;
-		break;
-	}
-	if (termios->c_cflag & CSTOPB)
-		ubrlcr |= UBRLCR_XSTOP;
-	if (termios->c_cflag & PARENB) {
-		ubrlcr |= UBRLCR_PRTEN;
-		if (!(termios->c_cflag & PARODD))
-			ubrlcr |= UBRLCR_EVENPRT;
-	}
-	if (port->fifosize > 1)
-		ubrlcr |= UBRLCR_FIFOEN;
-
-	spin_lock_irqsave(&port->lock, flags);
-
-	/*
-	 * Update the per-port timeout.
-	 */
-	uart_update_timeout(port, termios->c_cflag, baud);
-
-	port->read_status_mask = UARTDR_OVERR;
-	if (termios->c_iflag & INPCK)
-		port->read_status_mask |= UARTDR_PARERR | UARTDR_FRMERR;
-
-	/*
-	 * Characters to ignore
-	 */
-	port->ignore_status_mask = 0;
-	if (termios->c_iflag & IGNPAR)
-		port->ignore_status_mask |= UARTDR_FRMERR | UARTDR_PARERR;
-	if (termios->c_iflag & IGNBRK) {
-		/*
-		 * If we're ignoring parity and break indicators,
-		 * ignore overruns to (for real raw support).
-		 */
-		if (termios->c_iflag & IGNPAR)
-			port->ignore_status_mask |= UARTDR_OVERR;
-	}
-
-	quot -= 1;
-
-	clps_writel(ubrlcr | quot, UBRLCR(port));
-
-	spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static const char *clps711xuart_type(struct uart_port *port)
-{
-	return port->type == PORT_CLPS711X ? "CLPS711x" : NULL;
-}
-
-/*
- * Configure/autoconfigure the port.
- */
-static void clps711xuart_config_port(struct uart_port *port, int flags)
-{
-	if (flags & UART_CONFIG_TYPE)
-		port->type = PORT_CLPS711X;
-}
-
-static void clps711xuart_release_port(struct uart_port *port)
-{
-}
-
-static int clps711xuart_request_port(struct uart_port *port)
-{
-	return 0;
-}
-
-static struct uart_ops clps711x_pops = {
-	.tx_empty	= clps711xuart_tx_empty,
-	.set_mctrl	= clps711xuart_set_mctrl_null,
-	.get_mctrl	= clps711xuart_get_mctrl,
-	.stop_tx	= clps711xuart_stop_tx,
-	.start_tx	= clps711xuart_start_tx,
-	.stop_rx	= clps711xuart_stop_rx,
-	.enable_ms	= clps711xuart_enable_ms,
-	.break_ctl	= clps711xuart_break_ctl,
-	.startup	= clps711xuart_startup,
-	.shutdown	= clps711xuart_shutdown,
-	.set_termios	= clps711xuart_set_termios,
-	.type		= clps711xuart_type,
-	.config_port	= clps711xuart_config_port,
-	.release_port	= clps711xuart_release_port,
-	.request_port	= clps711xuart_request_port,
-};
-
-static struct uart_port clps711x_ports[UART_NR] = {
-	{
-		.iobase		= SYSCON1,
-		.irq		= IRQ_UTXINT1, /* IRQ_URXINT1, IRQ_UMSINT */
-		.uartclk	= 3686400,
-		.fifosize	= 16,
-		.ops		= &clps711x_pops,
-		.line		= 0,
-		.flags		= UPF_BOOT_AUTOCONF,
-	},
-	{
-		.iobase		= SYSCON2,
-		.irq		= IRQ_UTXINT2, /* IRQ_URXINT2 */
-		.uartclk	= 3686400,
-		.fifosize	= 16,
-		.ops		= &clps711x_pops,
-		.line		= 1,
-		.flags		= UPF_BOOT_AUTOCONF,
-	}
-};
-
-#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
-static void clps711xuart_console_putchar(struct uart_port *port, int ch)
-{
-	while (clps_readl(SYSFLG(port)) & SYSFLG_UTXFF)
-		barrier();
-	clps_writel(ch, UARTDR(port));
-}
-
-/*
- *	Print a string to the serial port trying not to disturb
- *	any possible real use of the port...
- *
- *	The console_lock must be held when we get here.
- *
- *	Note that this is called with interrupts already disabled
- */
-static void
-clps711xuart_console_write(struct console *co, const char *s,
-			   unsigned int count)
-{
-	struct uart_port *port = clps711x_ports + co->index;
-	unsigned int status, syscon;
-
-	/*
-	 *	Ensure that the port is enabled.
-	 */
-	syscon = clps_readl(SYSCON(port));
-	clps_writel(syscon | SYSCON_UARTEN, SYSCON(port));
-
-	uart_console_write(port, s, count, clps711xuart_console_putchar);
-
-	/*
-	 *	Finally, wait for transmitter to become empty
-	 *	and restore the uart state.
-	 */
-	do {
-		status = clps_readl(SYSFLG(port));
-	} while (status & SYSFLG_UBUSY);
-
-	clps_writel(syscon, SYSCON(port));
-}
-
-static void __init
-clps711xuart_console_get_options(struct uart_port *port, int *baud,
-				 int *parity, int *bits)
-{
-	if (clps_readl(SYSCON(port)) & SYSCON_UARTEN) {
-		unsigned int ubrlcr, quot;
-
-		ubrlcr = clps_readl(UBRLCR(port));
-
-		*parity = 'n';
-		if (ubrlcr & UBRLCR_PRTEN) {
-			if (ubrlcr & UBRLCR_EVENPRT)
-				*parity = 'e';
-			else
-				*parity = 'o';
-		}
-
-		if ((ubrlcr & UBRLCR_WRDLEN_MASK) == UBRLCR_WRDLEN7)
-			*bits = 7;
-		else
-			*bits = 8;
-
-		quot = ubrlcr & UBRLCR_BAUD_MASK;
-		*baud = port->uartclk / (16 * (quot + 1));
-	}
-}
-
-static int __init clps711xuart_console_setup(struct console *co, char *options)
-{
-	struct uart_port *port;
-	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.
-	 */
-	port = uart_get_console(clps711x_ports, UART_NR, co);
-
-	if (options)
-		uart_parse_options(options, &baud, &parity, &bits, &flow);
-	else
-		clps711xuart_console_get_options(port, &baud, &parity, &bits);
-
-	return uart_set_options(port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver clps711x_reg;
-static struct console clps711x_console = {
-	.name		= "ttyCL",
-	.write		= clps711xuart_console_write,
-	.device		= uart_console_device,
-	.setup		= clps711xuart_console_setup,
-	.flags		= CON_PRINTBUFFER,
-	.index		= -1,
-	.data		= &clps711x_reg,
-};
-
-static int __init clps711xuart_console_init(void)
-{
-	register_console(&clps711x_console);
-	return 0;
-}
-console_initcall(clps711xuart_console_init);
-
-#define CLPS711X_CONSOLE	&clps711x_console
-#else
-#define CLPS711X_CONSOLE	NULL
-#endif
-
-static struct uart_driver clps711x_reg = {
-	.driver_name		= "ttyCL",
-	.dev_name		= "ttyCL",
-	.major			= SERIAL_CLPS711X_MAJOR,
-	.minor			= SERIAL_CLPS711X_MINOR,
-	.nr			= UART_NR,
-
-	.cons			= CLPS711X_CONSOLE,
-};
-
-static int __init clps711xuart_init(void)
-{
-	int ret, i;
-
-	printk(KERN_INFO "Serial: CLPS711x driver\n");
-
-	ret = uart_register_driver(&clps711x_reg);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < UART_NR; i++)
-		uart_add_one_port(&clps711x_reg, &clps711x_ports[i]);
-
-	return 0;
-}
-
-static void __exit clps711xuart_exit(void)
-{
-	int i;
-
-	for (i = 0; i < UART_NR; i++)
-		uart_remove_one_port(&clps711x_reg, &clps711x_ports[i]);
-
-	uart_unregister_driver(&clps711x_reg);
-}
-
-module_init(clps711xuart_init);
-module_exit(clps711xuart_exit);
-
-MODULE_AUTHOR("Deep Blue Solutions Ltd");
-MODULE_DESCRIPTION("CLPS-711x generic serial driver");
-MODULE_LICENSE("GPL");
-MODULE_ALIAS_CHARDEV(SERIAL_CLPS711X_MAJOR, SERIAL_CLPS711X_MINOR);