linux/drivers/staging/comedi/drivers/addi_apci_2200.c
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   1/*
   2 * addi_apci_2200.c
   3 * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
   4 * Project manager: Eric Stolz
   5 *
   6 *      ADDI-DATA GmbH
   7 *      Dieselstrasse 3
   8 *      D-77833 Ottersweier
   9 *      Tel: +19(0)7223/9493-0
  10 *      Fax: +49(0)7223/9493-92
  11 *      http://www.addi-data.com
  12 *      info@addi-data.com
  13 *
  14 * This program is free software; you can redistribute it and/or modify it
  15 * under the terms of the GNU General Public License as published by the
  16 * Free Software Foundation; either version 2 of the License, or (at your
  17 * option) any later version.
  18 *
  19 * This program is distributed in the hope that it will be useful, but WITHOUT
  20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
  22 * more details.
  23 */
  24
  25#include <linux/module.h>
  26
  27#include "../comedi_pci.h"
  28#include "addi_watchdog.h"
  29
  30/*
  31 * I/O Register Map
  32 */
  33#define APCI2200_DI_REG                 0x00
  34#define APCI2200_DO_REG                 0x04
  35#define APCI2200_WDOG_REG               0x08
  36
  37static int apci2200_di_insn_bits(struct comedi_device *dev,
  38                                 struct comedi_subdevice *s,
  39                                 struct comedi_insn *insn,
  40                                 unsigned int *data)
  41{
  42        data[1] = inw(dev->iobase + APCI2200_DI_REG);
  43
  44        return insn->n;
  45}
  46
  47static int apci2200_do_insn_bits(struct comedi_device *dev,
  48                                 struct comedi_subdevice *s,
  49                                 struct comedi_insn *insn,
  50                                 unsigned int *data)
  51{
  52        s->state = inw(dev->iobase + APCI2200_DO_REG);
  53
  54        if (comedi_dio_update_state(s, data))
  55                outw(s->state, dev->iobase + APCI2200_DO_REG);
  56
  57        data[1] = s->state;
  58
  59        return insn->n;
  60}
  61
  62static int apci2200_reset(struct comedi_device *dev)
  63{
  64        outw(0x0, dev->iobase + APCI2200_DO_REG);
  65
  66        addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
  67
  68        return 0;
  69}
  70
  71static int apci2200_auto_attach(struct comedi_device *dev,
  72                                unsigned long context_unused)
  73{
  74        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  75        struct comedi_subdevice *s;
  76        int ret;
  77
  78        ret = comedi_pci_enable(dev);
  79        if (ret)
  80                return ret;
  81
  82        dev->iobase = pci_resource_start(pcidev, 1);
  83
  84        ret = comedi_alloc_subdevices(dev, 3);
  85        if (ret)
  86                return ret;
  87
  88        /* Initialize the digital input subdevice */
  89        s = &dev->subdevices[0];
  90        s->type         = COMEDI_SUBD_DI;
  91        s->subdev_flags = SDF_READABLE;
  92        s->n_chan       = 8;
  93        s->maxdata      = 1;
  94        s->range_table  = &range_digital;
  95        s->insn_bits    = apci2200_di_insn_bits;
  96
  97        /* Initialize the digital output subdevice */
  98        s = &dev->subdevices[1];
  99        s->type         = COMEDI_SUBD_DO;
 100        s->subdev_flags = SDF_WRITABLE;
 101        s->n_chan       = 16;
 102        s->maxdata      = 1;
 103        s->range_table  = &range_digital;
 104        s->insn_bits    = apci2200_do_insn_bits;
 105
 106        /* Initialize the watchdog subdevice */
 107        s = &dev->subdevices[2];
 108        ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
 109        if (ret)
 110                return ret;
 111
 112        apci2200_reset(dev);
 113        return 0;
 114}
 115
 116static void apci2200_detach(struct comedi_device *dev)
 117{
 118        if (dev->iobase)
 119                apci2200_reset(dev);
 120        comedi_pci_detach(dev);
 121}
 122
 123static struct comedi_driver apci2200_driver = {
 124        .driver_name    = "addi_apci_2200",
 125        .module         = THIS_MODULE,
 126        .auto_attach    = apci2200_auto_attach,
 127        .detach         = apci2200_detach,
 128};
 129
 130static int apci2200_pci_probe(struct pci_dev *dev,
 131                              const struct pci_device_id *id)
 132{
 133        return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
 134}
 135
 136static const struct pci_device_id apci2200_pci_table[] = {
 137        { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
 138        { 0 }
 139};
 140MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
 141
 142static struct pci_driver apci2200_pci_driver = {
 143        .name           = "addi_apci_2200",
 144        .id_table       = apci2200_pci_table,
 145        .probe          = apci2200_pci_probe,
 146        .remove         = comedi_pci_auto_unconfig,
 147};
 148module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
 149
 150MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
 151MODULE_AUTHOR("Comedi http://www.comedi.org");
 152MODULE_LICENSE("GPL");
 153
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