linux/drivers/comedi/drivers/amplc_pci236.c

// SPDX-License-Identifier: GPL-2.0+
/*
 * comedi/drivers/amplc_pci236.c
 * Driver for Amplicon PCI236 DIO boards.
 *
 * Copyright (C) 2002-2014 MEV Ltd. <https://www.mev.co.uk/>
 *
 * COMEDI - Linux Control and Measurement Device Interface
 * Copyright (C) 2000 David A. Schleef <[email protected]>
 */
/*
 * Driver: amplc_pci236
 * Description: Amplicon PCI236
 * Author: Ian Abbott <[email protected]>
 * Devices: [Amplicon] PCI236 (amplc_pci236)
 * Updated: Fri, 25 Jul 2014 15:32:40 +0000
 * Status: works
 *
 * Configuration options:
 *   none
 *
 * Manual configuration of PCI board (PCI236) is not supported; it is
 * configured automatically.
 *
 * The PCI236 board has a single 8255 appearing as subdevice 0.
 *
 * Subdevice 1 pretends to be a digital input device, but it always
 * returns 0 when read. However, if you run a command with
 * scan_begin_src=TRIG_EXT, a rising edge on port C bit 3 acts as an
 * external trigger, which can be used to wake up tasks.  This is like
 * the comedi_parport device.  If no interrupt is connected, then
 * subdevice 1 is unused.
 */

#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/comedi/comedi_pci.h>

#include "amplc_pc236.h"
#include "plx9052.h"

/* Disable, and clear, interrupts */
#define PCI236_INTR_DISABLE …

/* Enable, and clear, interrupts */
#define PCI236_INTR_ENABLE …

static void pci236_intr_update_cb(struct comedi_device *dev, bool enable)
{ … }

static bool pci236_intr_chk_clr_cb(struct comedi_device *dev)
{ … }

static const struct pc236_board pc236_pci_board = …;

static int pci236_auto_attach(struct comedi_device *dev,
			      unsigned long context_unused)
{ … }

static struct comedi_driver amplc_pci236_driver = …;

static const struct pci_device_id pci236_pci_table[] = …;

MODULE_DEVICE_TABLE(pci, pci236_pci_table);

static int amplc_pci236_pci_probe(struct pci_dev *dev,
				  const struct pci_device_id *id)
{ … }

static struct pci_driver amplc_pci236_pci_driver = …;

module_comedi_pci_driver(…);

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