linux/drivers/comedi/drivers/dt2814.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * comedi/drivers/dt2814.c
 * Hardware driver for Data Translation DT2814
 *
 * COMEDI - Linux Control and Measurement Device Interface
 * Copyright (C) 1998 David A. Schleef <[email protected]>
 */
/*
 * Driver: dt2814
 * Description: Data Translation DT2814
 * Author: ds
 * Status: complete
 * Devices: [Data Translation] DT2814 (dt2814)
 *
 * Configuration options:
 * [0] - I/O port base address
 * [1] - IRQ
 *
 * This card has 16 analog inputs multiplexed onto a 12 bit ADC.  There
 * is a minimally useful onboard clock.  The base frequency for the
 * clock is selected by jumpers, and the clock divider can be selected
 * via programmed I/O.  Unfortunately, the clock divider can only be
 * a power of 10, from 1 to 10^7, of which only 3 or 4 are useful.  In
 * addition, the clock does not seem to be very accurate.
 */

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

#define DT2814_CSR …
#define DT2814_DATA …

/*
 * flags
 */

#define DT2814_FINISH …
#define DT2814_ERR …
#define DT2814_BUSY …
#define DT2814_ENB …
#define DT2814_CHANMASK …

#define DT2814_TIMEOUT …
#define DT2814_MAX_SPEED …

static int dt2814_ai_notbusy(struct comedi_device *dev,
			     struct comedi_subdevice *s,
			     struct comedi_insn *insn,
			     unsigned long context)
{ … }

static int dt2814_ai_clear(struct comedi_device *dev)
{ … }

static int dt2814_ai_eoc(struct comedi_device *dev,
			 struct comedi_subdevice *s,
			 struct comedi_insn *insn,
			 unsigned long context)
{ … }

static int dt2814_ai_insn_read(struct comedi_device *dev,
			       struct comedi_subdevice *s,
			       struct comedi_insn *insn, unsigned int *data)
{ … }

static int dt2814_ns_to_timer(unsigned int *ns, unsigned int flags)
{ … }

static int dt2814_ai_cmdtest(struct comedi_device *dev,
			     struct comedi_subdevice *s, struct comedi_cmd *cmd)
{ … }

static int dt2814_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
{ … }

static int dt2814_ai_cancel(struct comedi_device *dev,
			    struct comedi_subdevice *s)
{ … }

static irqreturn_t dt2814_interrupt(int irq, void *d)
{ … }

static int dt2814_attach(struct comedi_device *dev, struct comedi_devconfig *it)
{ … }

static void dt2814_detach(struct comedi_device *dev)
{ … }

static struct comedi_driver dt2814_driver = …;
module_comedi_driver(…);

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