/*
 *  drivers/serial/serial_txx9.c
 *
 * Derived from many drivers using generic_serial interface,
 * especially serial_tx3912.c by Steven J. Hill and r39xx_serial.c
 * (was in Linux/VR tree) by Jim Pick.
 *
 *  Copyright (C) 1999 Harald Koerfgen
 *  Copyright (C) 2000 Jim Pick <jim@jimpick.com>
 *  Copyright (C) 2001 Steven J. Hill (sjhill@realitydiluted.com)
 *  Copyright (C) 2000-2002 Toshiba Corporation
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 *  Serial driver for TX3927/TX4927/TX4925/TX4938 internal SIO controller
 */

#if defined(CONFIG_SERIAL_TXX9_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/delay.h>
#include <linux/platform_device.h>
#include <linux/pci.h>
#include <linux/serial_core.h>
#include <linux/serial.h>

#include <asm/io.h>

static char *serial_version = "1.11";
static char *serial_name = "TX39/49 Serial driver";

#define PASS_LIMIT	256

#if !defined(CONFIG_SERIAL_TXX9_STDSERIAL)
/* "ttyS" is used for standard serial driver */
#define TXX9_TTY_NAME "ttyTX"
#define TXX9_TTY_MINOR_START	196
#define TXX9_TTY_MAJOR	204
#else
/* acts like standard serial driver */
#define TXX9_TTY_NAME "ttyS"
#define TXX9_TTY_MINOR_START	64
#define TXX9_TTY_MAJOR	TTY_MAJOR
#endif

/* flag aliases */
#define UPF_TXX9_HAVE_CTS_LINE	UPF_BUGGY_UART
#define UPF_TXX9_USE_SCLK	UPF_MAGIC_MULTIPLIER

#ifdef CONFIG_PCI
/* support for Toshiba TC86C001 SIO */
#define ENABLE_SERIAL_TXX9_PCI
#endif

/*
 * Number of serial ports
 */
#define UART_NR  CONFIG_SERIAL_TXX9_NR_UARTS

struct uart_txx9_port {
	struct uart_port	port;
	/* No additional info for now */
};

#define TXX9_REGION_SIZE	0x24

/* TXX9 Serial Registers */
#define TXX9_SILCR	0x00
#define TXX9_SIDICR	0x04