/* SPDX-License-Identifier: LGPL-2.0+ WITH Linux-syscall-note */
/*
* comedi.h
* header file for COMEDI user API
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 1998-2001 David A. Schleef <ds@schleef.org>
*/
#ifndef _COMEDI_H
#define _COMEDI_H
#define COMEDI_MAJORVERSION 0
#define COMEDI_MINORVERSION 7
#define COMEDI_MICROVERSION 76
#define VERSION "0.7.76"
/* comedi's major device number */
#define COMEDI_MAJOR 98
/*
* maximum number of minor devices. This can be increased, although
* kernel structures are currently statically allocated, thus you
* don't want this to be much more than you actually use.
*/
#define COMEDI_NDEVICES 16
/* number of config options in the config structure */
#define COMEDI_NDEVCONFOPTS 32
/*
* NOTE: 'comedi_config --init-data' is deprecated
*
* The following indexes in the config options were used by
* comedi_config to pass firmware blobs from user space to the
* comedi drivers. The request_firmware() hotplug interface is
* now used by all comedi drivers instead.
*/
/* length of nth chunk of firmware data -*/
#define COMEDI_DEVCONF_AUX_DATA3_LENGTH 25
#define COMEDI_DEVCONF_AUX_DATA2_LENGTH 26
#define COMEDI_DEVCONF_AUX_DATA1_LENGTH 27
#define COMEDI_DEVCONF_AUX_DATA0_LENGTH 28
/* most significant 32 bits of pointer address (if needed) */
#define COMEDI_DEVCONF_AUX_DATA_HI 29
/* least significant 32 bits of pointer address */
#define COMEDI_DEVCONF_AUX_DATA_LO 30
#define COMEDI_DEVCONF_AUX_DATA_LENGTH 31 /* total data length */
/* max length of device and driver names */
#define COMEDI_NAMELEN 20
/* packs and unpacks a channel/range number */
#define CR_PACK(chan, rng, aref) \
((((aref) & 0x3) << 24) | (((rng) & 0xff) << 16) | (chan))
#define CR_PACK_FLAGS(chan, range, aref, flags) \
(CR_PACK(chan
