/*
   *  linux/include/linux/serial_8250.h
   *
   *  Copyright (C) 2004 Russell King
   *
   * 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.
   */
  #ifndef _LINUX_SERIAL_8250_H
  #define _LINUX_SERIAL_8250_H
  
  #include <linux/serial_core.h>

  #include <linux/platform_device.h>

  /*
   * This is the platform device platform_data structure
   */

  struct plat_serial8250_port {
  	unsigned long	iobase;		/* io base address */
  	void __iomem	*membase;	/* ioremap cookie or NULL */

  	resource_size_t	mapbase;	/* resource base */

  	unsigned int	irq;		/* interrupt number */

  	unsigned long	irqflags;	/* request_irq flags */

  	unsigned int	uartclk;	/* UART clock rate */

  	void            *private_data;

  	unsigned char	regshift;	/* register shift */
  	unsigned char	iotype;		/* UPIO_* */

  	unsigned char	hub6;

  	upf_t		flags;		/* UPF_* flags */

  	unsigned int	type;		/* If UPF_FIXED_TYPE */

  	unsigned int	(*serial_in)(struct uart_port *, int);
  	void		(*serial_out)(struct uart_port *, int, int);

  	void		(*set_termios)(struct uart_port *,
  			               struct ktermios *new,
  			               struct ktermios *old);

  	int		(*handle_irq)(struct uart_port *);

  	void		(*pm)(struct uart_port *, unsigned int state,
  			      unsigned old);

  };

  /*

   * Allocate 8250 platform device IDs.  Nothing is implied by
   * the numbering here, except for the legacy entry being -1.
   */
  enum {
  	PLAT8250_DEV_LEGACY = -1,
  	PLAT8250_DEV_PLATFORM,
  	PLAT8250_DEV_PLATFORM1,

  	PLAT8250_DEV_PLATFORM2,

  	PLAT8250_DEV_FOURPORT,
  	PLAT8250_DEV_ACCENT,
  	PLAT8250_DEV_BOCA,

  	PLAT8250_DEV_EXAR_ST16C554,

  	PLAT8250_DEV_HUB6,
  	PLAT8250_DEV_MCA,

  	PLAT8250_DEV_AU1X00,

  	PLAT8250_DEV_SM501,

  };
  
  /*

   * This should be used by drivers which want to register
   * their own 8250 ports without registering their own
   * platform device.  Using these will make your driver
   * dependent on the 8250 driver.
   */
  struct uart_port;

  struct uart_8250_port;

  
  int serial8250_register_port(struct uart_port *);
  void serial8250_unregister_port(int line);
  void serial8250_suspend_port(int line);
  void serial8250_resume_port(int line);

  extern int early_serial_setup(struct uart_port *port);

  extern int serial8250_find_port(struct uart_port *p);
  extern int serial8250_find_port_for_earlycon(void);
  extern int setup_early_serial8250_console(char *cmdline);

  extern void serial8250_do_set_termios(struct uart_port *port,
  		struct ktermios *termios, struct ktermios *old);

  extern void serial8250_do_pm(struct uart_port *port, unsigned int state,
  			     unsigned int oldstate);

  extern int fsl8250_handle_irq(struct uart_port *port);

  int serial8250_handle_irq(struct uart_port *port, unsigned int iir);

  unsigned char serial8250_rx_chars(struct uart_8250_port *up, unsigned char lsr);
  void serial8250_tx_chars(struct uart_8250_port *up);
  unsigned int serial8250_modem_status(struct uart_8250_port *up);

  extern void serial8250_set_isa_configurator(void (*v)
  					(int port, struct uart_port *up,
  						unsigned short *capabilities));

  #endif