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