dm7520.h

rt 7520采集卡 linux驱动源代码

/*
	FILE NAME: dm7520.h

	FILE DESCRIPTION:

		Low level ioctl() request descriptor structure and request
		code definitions.

	PROJECT NAME: Linux DM7520 Driver, Library, and Example Programs

	PROJECT VERSION: (Defined in README.TXT)

	Copyright 2004 RTD Embedded Technologies, Inc.  All Rights Reserved.
*/

#ifndef DM7520_H
#define DM7520_H

#include <asm/ioctl.h>
#include "dm7520_reg.h"

#define LAS0	0
#define LAS1	1
#define LCFG	2
#define LASMAX	3

typedef struct _cg_entry_t
{
        unsigned int    channel : 4;
        unsigned int    gain    : 3;
        unsigned int    nrse    : 1;
        unsigned int    range   : 2;
        unsigned int    ground  : 1;
        unsigned int    pause   : 1;
        unsigned int    dac1    : 1;
        unsigned int    dac2    : 1;
        unsigned int    skip    : 1;
        unsigned int    reserved: 1;
} cg_entry_t, *cg_entry_p;

typedef struct {
	short las;
	short addr;
	int data;
} dm7520_request;

typedef struct {
	int16_t* pBuf;
	long size;
} dm7520_read_request;

/*
typedef struct {
	int16_t * buffer;
	size_t size;
	int channel;
	int dmach;
}dm7520_writebuf;
*/

#define DM7520_READ_AD		0
#define DM7520_READ_HD		1
#define DM7520_WRITE_DA1	2
#define DM7520_WRITE_DA2	3

#define DM7520IOCBASE	0x00
#define DM7520IOCCOOKIE	'd'

#define DM7520IOCGETREG	_IOR(DM7520IOCCOOKIE, DM7520IOCBASE+1, dm7520_request*)
#define DM7520IOCSETREG	_IOW(DM7520IOCCOOKIE, DM7520IOCBASE+1, dm7520_request*)
#define DM7520IOCSETDMA	_IOW(DM7520IOCCOOKIE, DM7520IOCBASE+4, dm7520_request*)
#define DM7520IOCUNSETDDMA	_IOW(DM7520IOCCOOKIE, DM7520IOCBASE+5, dm7520_request*)
#define DM7520IOCGETECODE	_IOR(DM7520IOCCOOKIE, DM7520IOCBASE+6, dm7520_request*)
#define DM7520IOCCLEARECODE	_IO(DM7520IOCCOOKIE, DM7520IOCBASE+7)
#define DM7520IOCSETWRITEBUFFER _IOW(DM7520IOCCOOKIE, DM7520IOCBASE+8, dm7520_request*)
#define DM7520IOCPREPARECONTROL _IO(DM7520IOCCOOKIE, DM7520IOCBASE+9)
#define DM7520IOCGETFIFOSIZE _IOR(DM7520IOCCOOKIE, DM7520IOCBASE+10, dm7520_request*)
#define DM7520IOCSETRCHAN _IOW(DM7520IOCCOOKIE, DM7520IOCBASE+11, dm7520_request*)
#define DM7520IOCREAD	_IOW(DM7520IOCCOOKIE, DM7520IOCBASE+12, dm7520_read_request*)


#define DMATEMPSIZE				65536
#define CONTROLFLAGSIZE			65
#define BUFFER_READY	'*'
#define BUFFER_COPIED '-'
#define BUFFER_NOT_READY '#'
#define FIFO_EMPTY '!'

#define ERR_IT_OVERRUN	-999

#endif