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#include <linux/pci.h>
  27
  28#include "../comedidev.h"
  29#include "addi_watchdog.h"
  30#include "comedi_fc.h"
  31
  32/*
  33 * PCI bar 1 I/O Register map - Digital input/output
  34 */
  35#define APCI1516_DI_REG                 0x00
  36#define APCI1516_DO_REG                 0x04
  37
  38/*
  39 * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
  40 */
  41#define APCI1516_WDOG_REG               0x00
  42
  43enum apci1516_boardid {
  44        BOARD_APCI1016,
  45        BOARD_APCI1516,
  46        BOARD_APCI2016,
  47};
  48
  49struct apci1516_boardinfo {
  50        const char *name;
  51        int di_nchan;
  52        int do_nchan;
  53        int has_wdog;
  54};
  55
  56static const struct apci1516_boardinfo apci1516_boardtypes[] = {
  57        [BOARD_APCI1016] = {
  58                .name           = "apci1016",
  59                .di_nchan       = 16,
  60        },
  61        [BOARD_APCI1516] = {
  62                .name           = "apci1516",
  63                .di_nchan       = 8,
  64                .do_nchan       = 8,
  65                .has_wdog       = 1,
  66        },
  67        [BOARD_APCI2016] = {
  68                .name           = "apci2016",
  69                .do_nchan       = 16,
  70                .has_wdog       = 1,
  71        },
  72};
  73
  74struct apci1516_private {
  75        unsigned long wdog_iobase;
  76};
  77
  78static int apci1516_di_insn_bits(struct comedi_device *dev,
  79                                 struct comedi_subdevice *s,
  80                                 struct comedi_insn *insn,
  81                                 unsigned int *data)
  82{
  83        data[1] = inw(dev->iobase + APCI1516_DI_REG);
  84
  85        return insn->n;
  86}
  87
  88static int apci1516_do_insn_bits(struct comedi_device *dev,
  89                                 struct comedi_subdevice *s,
  90                                 struct comedi_insn *insn,
  91                                 unsigned int *data)
  92{
  93        s->state = inw(dev->iobase + APCI1516_DO_REG);
  94
  95        if (comedi_dio_update_state(s, data))
  96                outw(s->state, dev->iobase + APCI1516_DO_REG);
  97
  98        data[1] = s->state;
  99
 100        return insn->n;
 101}
 102
 103static int apci1516_reset(struct comedi_device *dev)
 104{
 105        const struct apci1516_boardinfo *this_board = dev->board_ptr;
 106        struct apci1516_private *devpriv = dev->private;
 107
 108        if (!this_board->has_wdog)
 109                return 0;
 110
 111        outw(0x0, dev->iobase + APCI1516_DO_REG);
 112
 113        addi_watchdog_reset(devpriv->wdog_iobase);
 114
 115        return 0;
 116}
 117
 118static int apci1516_auto_attach(struct comedi_device *dev,
 119                                unsigned long context)
 120{
 121        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 122        const struct apci1516_boardinfo *this_board = NULL;
 123        struct apci1516_private *devpriv;
 124        struct comedi_subdevice *s;
 125        int ret;
 126
 127        if (context < ARRAY_SIZE(apci1516_boardtypes))
 128                this_board = &apci1516_boardtypes[context];
 129        if (!this_board)
 130                return -ENODEV;
 131        dev->board_ptr = this_board;
 132        dev->board_name = this_board->name;
 133
 134        devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
 135        if (!devpriv)
 136                return -ENOMEM;
 137
 138        ret = comedi_pci_enable(dev);
 139        if (ret)
 140                return ret;
 141
 142        dev->iobase = pci_resource_start(pcidev, 1);
 143        devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
 144
 145        ret = comedi_alloc_subdevices(dev, 3);
 146        if (ret)
 147                return ret;
 148
 149        /* Initialize the digital input subdevice */
 150        s = &dev->subdevices[0];
 151        if (this_board->di_nchan) {
 152                s->type         = COMEDI_SUBD_DI;
 153                s->subdev_flags = SDF_READABLE;
 154                s->n_chan       = this_board->di_nchan;
 155                s->maxdata      = 1;
 156                s->range_table  = &range_digital;
 157                s->insn_bits    = apci1516_di_insn_bits;
 158        } else {
 159                s->type         = COMEDI_SUBD_UNUSED;
 160        }
 161
 162        /* Initialize the digital output subdevice */
 163        s = &dev->subdevices[1];
 164        if (this_board->do_nchan) {
 165                s->type         = COMEDI_SUBD_DO;
 166                s->subdev_flags = SDF_WRITABLE;
 167                s->n_chan       = this_board->do_nchan;
 168                s->maxdata      = 1;
 169                s->range_table  = &range_digital;
 170                s->insn_bits    = apci1516_do_insn_bits;
 171        } else {
 172                s->type         = COMEDI_SUBD_UNUSED;
 173        }
 174
 175        /* Initialize the watchdog subdevice */
 176        s = &dev->subdevices[2];
 177        if (this_board->has_wdog) {
 178                ret = addi_watchdog_init(s, devpriv->wdog_iobase);
 179                if (ret)
 180                        return ret;
 181        } else {
 182                s->type         = COMEDI_SUBD_UNUSED;
 183        }
 184
 185        apci1516_reset(dev);
 186        return 0;
 187}
 188
 189static void apci1516_detach(struct comedi_device *dev)
 190{
 191        if (dev->iobase)
 192                apci1516_reset(dev);
 193        comedi_pci_detach(dev);
 194}
 195
 196static struct comedi_driver apci1516_driver = {
 197        .driver_name    = "addi_apci_1516",
 198        .module         = THIS_MODULE,
 199        .auto_attach    = apci1516_auto_attach,
 200        .detach         = apci1516_detach,
 201};
 202
 203static int apci1516_pci_probe(struct pci_dev *dev,
 204                              const struct pci_device_id *id)
 205{
 206        return comedi_pci_auto_config(dev, &apci1516_driver, id->driver_data);
 207}
 208
 209static const struct pci_device_id apci1516_pci_table[] = {
 210        { PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
 211        { PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
 212        { PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
 213        { 0 }
 214};
 215MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
 216
 217static struct pci_driver apci1516_pci_driver = {
 218        .name           = "addi_apci_1516",
 219        .id_table       = apci1516_pci_table,
 220        .probe          = apci1516_pci_probe,
 221        .remove         = comedi_pci_auto_unconfig,
 222};
 223module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
 224
 225MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
 226MODULE_AUTHOR("Comedi http://www.comedi.org");
 227MODULE_LICENSE("GPL");
 228
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