drivers/staging/comedi/drivers/addi_apci_2200.c

   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/pci.h>
  26
  27 #include "../comedidev.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
  37 static 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
  47 static 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         unsigned int mask = data[0];
  53         unsigned int bits = data[1];
  54
  55         s->state = inw(dev->iobase + APCI2200_DO_REG);
  56         if (mask) {
  57                 s->state &= ~mask;
  58                 s->state |= (bits & mask);
  59
  60                 outw(s->state, dev->iobase + APCI2200_DO_REG);
  61         }
  62
  63         data[1] = s->state;
  64
  65         return insn->n;
  66 }
  67
  68 static int apci2200_reset(struct comedi_device *dev)
  69 {
  70         outw(0x0, dev->iobase + APCI2200_DO_REG);
  71
  72         addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
  73
  74         return 0;
  75 }
  76
  77 static int apci2200_auto_attach(struct comedi_device *dev,
  78                                 unsigned long context_unused)
  79 {
  80         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  81         struct comedi_subdevice *s;
  82         int ret;
  83
  84         ret = comedi_pci_enable(dev);
  85         if (ret)
  86                 return ret;
  87
  88         dev->iobase = pci_resource_start(pcidev, 1);
  89
  90         ret = comedi_alloc_subdevices(dev, 3);
  91         if (ret)
  92                 return ret;
  93
  94         /* Initialize the digital input subdevice */
  95         s = &dev->subdevices[0];
  96         s->type         = COMEDI_SUBD_DI;
  97         s->subdev_flags = SDF_READABLE;
  98         s->n_chan       = 8;
  99         s->maxdata      = 1;
 100         s->range_table  = &range_digital;
 101         s->insn_bits    = apci2200_di_insn_bits;
 102
 103         /* Initialize the digital output subdevice */
 104         s = &dev->subdevices[1];
 105         s->type         = COMEDI_SUBD_DO;
 106         s->subdev_flags = SDF_WRITEABLE;
 107         s->n_chan       = 16;
 108         s->maxdata      = 1;
 109         s->range_table  = &range_digital;
 110         s->insn_bits    = apci2200_do_insn_bits;
 111
 112         /* Initialize the watchdog subdevice */
 113         s = &dev->subdevices[2];
 114         ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
 115         if (ret)
 116                 return ret;
 117
 118         apci2200_reset(dev);
 119         return 0;
 120 }
 121
 122 static void apci2200_detach(struct comedi_device *dev)
 123 {
 124         if (dev->iobase)
 125                 apci2200_reset(dev);
 126         comedi_pci_disable(dev);
 127 }
 128
 129 static struct comedi_driver apci2200_driver = {
 130         .driver_name    = "addi_apci_2200",
 131         .module         = THIS_MODULE,
 132         .auto_attach    = apci2200_auto_attach,
 133         .detach         = apci2200_detach,
 134 };
 135
 136 static int apci2200_pci_probe(struct pci_dev *dev,
 137                               const struct pci_device_id *id)
 138 {
 139         return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
 140 }
 141
 142 static DEFINE_PCI_DEVICE_TABLE(apci2200_pci_table) = {
 143         { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
 144         { 0 }
 145 };
 146 MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
 147
 148 static struct pci_driver apci2200_pci_driver = {
 149         .name           = "addi_apci_2200",
 150         .id_table       = apci2200_pci_table,
 151         .probe          = apci2200_pci_probe,
 152         .remove         = comedi_pci_auto_unconfig,
 153 };
 154 module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
 155
 156 MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
 157 MODULE_AUTHOR("Comedi http://www.comedi.org");
 158 MODULE_LICENSE("GPL");