LXR linux/drivers/staging/comedi/drivers/addi_apci

   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 * You should have received a copy of the GNU General Public License along
  25 * with this program; if not, write to the Free Software Foundation, Inc.,
  26 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  27 *
  28 * You should also find the complete GPL in the COPYING file accompanying
  29 * this source code.
  30 */
  31
  32#include <linux/pci.h>
  33
  34#include "../comedidev.h"
  35#include "addi_watchdog.h"
  36
  37/*
  38 * I/O Register Map
  39 */
  40#define APCI2200_DI_REG                 0x00
  41#define APCI2200_DO_REG                 0x04
  42#define APCI2200_WDOG_REG               0x08
  43
  44static int apci2200_di_insn_bits(struct comedi_device *dev,
  45                                 struct comedi_subdevice *s,
  46                                 struct comedi_insn *insn,
  47                                 unsigned int *data)
  48{
  49        data[1] = inw(dev->iobase + APCI2200_DI_REG);
  50
  51        return insn->n;
  52}
  53
  54static int apci2200_do_insn_bits(struct comedi_device *dev,
  55                                 struct comedi_subdevice *s,
  56                                 struct comedi_insn *insn,
  57                                 unsigned int *data)
  58{
  59        unsigned int mask = data[0];
  60        unsigned int bits = data[1];
  61
  62        s->state = inw(dev->iobase + APCI2200_DO_REG);
  63        if (mask) {
  64                s->state &= ~mask;
  65                s->state |= (bits & mask);
  66
  67                outw(s->state, dev->iobase + APCI2200_DO_REG);
  68        }
  69
  70        data[1] = s->state;
  71
  72        return insn->n;
  73}
  74
  75static int apci2200_reset(struct comedi_device *dev)
  76{
  77        outw(0x0, dev->iobase + APCI2200_DO_REG);
  78
  79        addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
  80
  81        return 0;
  82}
  83
  84static int apci2200_auto_attach(struct comedi_device *dev,
  85                                unsigned long context_unused)
  86{
  87        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  88        struct comedi_subdevice *s;
  89        int ret;
  90
  91        ret = comedi_pci_enable(dev);
  92        if (ret)
  93                return ret;
  94
  95        dev->iobase = pci_resource_start(pcidev, 1);
  96
  97        ret = comedi_alloc_subdevices(dev, 3);
  98        if (ret)
  99                return ret;
 100
 101        /* Initialize the digital input subdevice */
 102        s = &dev->subdevices[0];
 103        s->type         = COMEDI_SUBD_DI;
 104        s->subdev_flags = SDF_READABLE;
 105        s->n_chan       = 8;
 106        s->maxdata      = 1;
 107        s->range_table  = &range_digital;
 108        s->insn_bits    = apci2200_di_insn_bits;
 109
 110        /* Initialize the digital output subdevice */
 111        s = &dev->subdevices[1];
 112        s->type         = COMEDI_SUBD_DO;
 113        s->subdev_flags = SDF_WRITEABLE;
 114        s->n_chan       = 16;
 115        s->maxdata      = 1;
 116        s->range_table  = &range_digital;
 117        s->insn_bits    = apci2200_do_insn_bits;
 118
 119        /* Initialize the watchdog subdevice */
 120        s = &dev->subdevices[2];
 121        ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
 122        if (ret)
 123                return ret;
 124
 125        apci2200_reset(dev);
 126        return 0;
 127}
 128
 129static void apci2200_detach(struct comedi_device *dev)
 130{
 131        if (dev->iobase)
 132                apci2200_reset(dev);
 133        comedi_spriv_free(dev, 2);
 134        comedi_pci_disable(dev);
 135}
 136
 137static struct comedi_driver apci2200_driver = {
 138        .driver_name    = "addi_apci_2200",
 139        .module         = THIS_MODULE,
 140        .auto_attach    = apci2200_auto_attach,
 141        .detach         = apci2200_detach,
 142};
 143
 144static int apci2200_pci_probe(struct pci_dev *dev,
 145                              const struct pci_device_id *id)
 146{
 147        return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
 148}
 149
 150static DEFINE_PCI_DEVICE_TABLE(apci2200_pci_table) = {
 151        { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
 152        { 0 }
 153};
 154MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
 155
 156static struct pci_driver apci2200_pci_driver = {
 157        .name           = "addi_apci_2200",
 158        .id_table       = apci2200_pci_table,
 159        .probe          = apci2200_pci_probe,
 160        .remove         = comedi_pci_auto_unconfig,
 161};
 162module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
 163
 164MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
 165MODULE_AUTHOR("Comedi http://www.comedi.org");
 166MODULE_LICENSE("GPL");
 167