linux/drivers/comedi/drivers/dt2817.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * comedi/drivers/dt2817.c
 * Hardware driver for Data Translation DT2817
 *
 * COMEDI - Linux Control and Measurement Device Interface
 * Copyright (C) 1998 David A. Schleef <[email protected]>
 */
/*
 * Driver: dt2817
 * Description: Data Translation DT2817
 * Author: ds
 * Status: complete
 * Devices: [Data Translation] DT2817 (dt2817)
 *
 * A very simple digital I/O card.  Four banks of 8 lines, each bank
 * is configurable for input or output.  One wonders why it takes a
 * 50 page manual to describe this thing.
 *
 * The driver (which, btw, is much less than 50 pages) has 1 subdevice
 * with 32 channels, configurable in groups of 8.
 *
 * Configuration options:
 * [0] - I/O port base base address
 */

#include <linux/module.h>
#include <linux/comedi/comedidev.h>

#define DT2817_CR …
#define DT2817_DATA …

static int dt2817_dio_insn_config(struct comedi_device *dev,
				  struct comedi_subdevice *s,
				  struct comedi_insn *insn,
				  unsigned int *data)
{ … }

static int dt2817_dio_insn_bits(struct comedi_device *dev,
				struct comedi_subdevice *s,
				struct comedi_insn *insn,
				unsigned int *data)
{ … }

static int dt2817_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{ … }

static struct comedi_driver dt2817_driver = …;
module_comedi_driver(…);

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;