linux/drivers/staging/comedi/drivers/addi_apci_1516.c
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   1/*
   2 * addi_apci_1516.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 * PCI bar 1 I/O Register map - Digital input/output
  32 */
  33#define APCI1516_DI_REG                 0x00
  34#define APCI1516_DO_REG                 0x04
  35
  36/*
  37 * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
  38 */
  39#define APCI1516_WDOG_REG               0x00
  40
  41enum apci1516_boardid {
  42        BOARD_APCI1016,
  43        BOARD_APCI1516,
  44        BOARD_APCI2016,
  45};
  46
  47struct apci1516_boardinfo {
  48        const char *name;
  49        int di_nchan;
  50        int do_nchan;
  51        int has_wdog;
  52};
  53
  54static const struct apci1516_boardinfo apci1516_boardtypes[] = {
  55        [BOARD_APCI1016] = {
  56                .name           = "apci1016",
  57                .di_nchan       = 16,
  58        },
  59        [BOARD_APCI1516] = {
  60                .name           = "apci1516",
  61                .di_nchan       = 8,
  62                .do_nchan       = 8,
  63                .has_wdog       = 1,
  64        },
  65        [BOARD_APCI2016] = {
  66                .name           = "apci2016",
  67                .do_nchan       = 16,
  68                .has_wdog       = 1,
  69        },
  70};
  71
  72struct apci1516_private {
  73        unsigned long wdog_iobase;
  74};
  75
  76static int apci1516_di_insn_bits(struct comedi_device *dev,
  77                                 struct comedi_subdevice *s,
  78                                 struct comedi_insn *insn,
  79                                 unsigned int *data)
  80{
  81        data[1] = inw(dev->iobase + APCI1516_DI_REG);
  82
  83        return insn->n;
  84}
  85
  86static int apci1516_do_insn_bits(struct comedi_device *dev,
  87                                 struct comedi_subdevice *s,
  88                                 struct comedi_insn *insn,
  89                                 unsigned int *data)
  90{
  91        s->state = inw(dev->iobase + APCI1516_DO_REG);
  92
  93        if (comedi_dio_update_state(s, data))
  94                outw(s->state, dev->iobase + APCI1516_DO_REG);
  95
  96        data[1] = s->state;
  97
  98        return insn->n;
  99}
 100
 101static int apci1516_reset(struct comedi_device *dev)
 102{
 103        const struct apci1516_boardinfo *board = dev->board_ptr;
 104        struct apci1516_private *devpriv = dev->private;
 105
 106        if (!board->has_wdog)
 107                return 0;
 108
 109        outw(0x0, dev->iobase + APCI1516_DO_REG);
 110
 111        addi_watchdog_reset(devpriv->wdog_iobase);
 112
 113        return 0;
 114}
 115
 116static int apci1516_auto_attach(struct comedi_device *dev,
 117                                unsigned long context)
 118{
 119        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 120        const struct apci1516_boardinfo *board = NULL;
 121        struct apci1516_private *devpriv;
 122        struct comedi_subdevice *s;
 123        int ret;
 124
 125        if (context < ARRAY_SIZE(apci1516_boardtypes))
 126                board = &apci1516_boardtypes[context];
 127        if (!board)
 128                return -ENODEV;
 129        dev->board_ptr = board;
 130        dev->board_name = board->name;
 131
 132        devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 133        if (!devpriv)
 134                return -ENOMEM;
 135
 136        ret = comedi_pci_enable(dev);
 137        if (ret)
 138                return ret;
 139
 140        dev->iobase = pci_resource_start(pcidev, 1);
 141        devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
 142
 143        ret = comedi_alloc_subdevices(dev, 3);
 144        if (ret)
 145                return ret;
 146
 147        /* Initialize the digital input subdevice */
 148        s = &dev->subdevices[0];
 149        if (board->di_nchan) {
 150                s->type         = COMEDI_SUBD_DI;
 151                s->subdev_flags = SDF_READABLE;
 152                s->n_chan       = board->di_nchan;
 153                s->maxdata      = 1;
 154                s->range_table  = &range_digital;
 155                s->insn_bits    = apci1516_di_insn_bits;
 156        } else {
 157                s->type         = COMEDI_SUBD_UNUSED;
 158        }
 159
 160        /* Initialize the digital output subdevice */
 161        s = &dev->subdevices[1];
 162        if (board->do_nchan) {
 163                s->type         = COMEDI_SUBD_DO;
 164                s->subdev_flags = SDF_WRITABLE;
 165                s->n_chan       = board->do_nchan;
 166                s->maxdata      = 1;
 167                s->range_table  = &range_digital;
 168                s->insn_bits    = apci1516_do_insn_bits;
 169        } else {
 170                s->type         = COMEDI_SUBD_UNUSED;
 171        }
 172
 173        /* Initialize the watchdog subdevice */
 174        s = &dev->subdevices[2];
 175        if (board->has_wdog) {
 176                ret = addi_watchdog_init(s, devpriv->wdog_iobase);
 177                if (ret)
 178                        return ret;
 179        } else {
 180                s->type         = COMEDI_SUBD_UNUSED;
 181        }
 182
 183        apci1516_reset(dev);
 184        return 0;
 185}
 186
 187static void apci1516_detach(struct comedi_device *dev)
 188{
 189        if (dev->iobase)
 190                apci1516_reset(dev);
 191        comedi_pci_detach(dev);
 192}
 193
 194static struct comedi_driver apci1516_driver = {
 195        .driver_name    = "addi_apci_1516",
 196        .module         = THIS_MODULE,
 197        .auto_attach    = apci1516_auto_attach,
 198        .detach         = apci1516_detach,
 199};
 200
 201static int apci1516_pci_probe(struct pci_dev *dev,
 202                              const struct pci_device_id *id)
 203{
 204        return comedi_pci_auto_config(dev, &apci1516_driver, id->driver_data);
 205}
 206
 207static const struct pci_device_id apci1516_pci_table[] = {
 208        { PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
 209        { PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
 210        { PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
 211        { 0 }
 212};
 213MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
 214
 215static struct pci_driver apci1516_pci_driver = {
 216        .name           = "addi_apci_1516",
 217        .id_table       = apci1516_pci_table,
 218        .probe          = apci1516_pci_probe,
 219        .remove         = comedi_pci_auto_unconfig,
 220};
 221module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
 222
 223MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
 224MODULE_AUTHOR("Comedi http://www.comedi.org");
 225MODULE_LICENSE("GPL");
 226
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