mcfserial.h
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/*
* mcfserial.c -- serial driver for ColdFire internal UARTS.
*
* Copyright (c) 1999 Greg Ungerer <gerg@snapgear.com>
* Copyright (c) 2000-2001 Lineo, Inc. <www.lineo.com>
* Copyright (c) 2002 SnapGear Inc., <www.snapgear.com>
*
* Based on code from 68332serial.c which was:
*
* Copyright (C) 1995 David S. Miller (davem@caip.rutgers.edu)
* Copyright (C) 1998 TSHG
* Copyright (c) 1999 Rt-Control Inc. <jeff@uclinux.org>
*/
#ifndef _MCF_SERIAL_H
#define _MCF_SERIAL_H
#include <linux/serial.h>
#ifdef __KERNEL__
/*
* Define a local serial stats structure.
*/
struct mcf_stats {
unsigned int rx;
unsigned int tx;
unsigned int rxbreak;
unsigned int rxframing;
unsigned int rxparity;
unsigned int rxoverrun;
};
/*
* This is our internal structure for each serial port's state.
* Each serial port has one of these structures associated with it.
*/
struct mcf_serial {
int magic;
volatile unsigned char *addr; /* UART memory address */
int irq;
int flags; /* defined in tty.h */
int type; /* UART type */
struct tty_struct *tty;
unsigned char imr; /* Software imr register */
unsigned int baud;
int sigs;
int custom_divisor;
int x_char; /* xon/xoff character */
int baud_base;
int close_delay;
unsigned short closing_wait;
unsigned short closing_wait2;
unsigned long event;
int line;
int count; /* # of fd on device */
int blocked_open; /* # of blocked opens */
unsigned char *xmit_buf;
int xmit_head;
int xmit_tail;
int xmit_cnt;
struct mcf_stats stats;
struct work_struct tqueue;
struct work_struct tqueue_hangup;
wait_queue_head_t open_wait;
wait_queue_head_t close_wait;
};
#endif /* __KERNEL__ */
#endif /* _MCF_SERIAL_H */