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  * 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 "../comedidev.h"
  33 #include "addi_watchdog.h"
  34
  35 /*
  36  * I/O Register Map
  37  */
  38 #define APCI2200_DI_REG                 0x00
  39 #define APCI2200_DO_REG                 0x04
  40 #define APCI2200_WDOG_REG               0x08
  41
  42 static int apci2200_di_insn_bits(struct comedi_device *dev,
  43                                  struct comedi_subdevice *s,
  44                                  struct comedi_insn *insn,
  45                                  unsigned int *data)
  46 {
  47         data[1] = inw(dev->iobase + APCI2200_DI_REG);
  48
  49         return insn->n;
  50 }
  51
  52 static int apci2200_do_insn_bits(struct comedi_device *dev,
  53                                  struct comedi_subdevice *s,
  54                                  struct comedi_insn *insn,
  55                                  unsigned int *data)
  56 {
  57         unsigned int mask = data[0];
  58         unsigned int bits = data[1];
  59
  60         s->state = inw(dev->iobase + APCI2200_DO_REG);
  61         if (mask) {
  62                 s->state &= ~mask;
  63                 s->state |= (bits & mask);
  64
  65                 outw(s->state, dev->iobase + APCI2200_DO_REG);
  66         }
  67
  68         data[1] = s->state;
  69
  70         return insn->n;
  71 }
  72
  73 static int apci2200_reset(struct comedi_device *dev)
  74 {
  75         outw(0x0, dev->iobase + APCI2200_DO_REG);
  76
  77         addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
  78
  79         return 0;
  80 }
  81
  82 static int apci2200_auto_attach(struct comedi_device *dev,
  83                                 unsigned long context_unused)
  84 {
  85         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  86         struct comedi_subdevice *s;
  87         int ret;
  88
  89         dev->board_name = dev->driver->driver_name;
  90
  91         ret = comedi_pci_enable(pcidev, dev->board_name);
  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
 129 static void apci2200_detach(struct comedi_device *dev)
 130 {
 131         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 132
 133         if (dev->iobase)
 134                 apci2200_reset(dev);
 135         if (dev->subdevices)
 136                 addi_watchdog_cleanup(&dev->subdevices[2]);
 137         if (pcidev) {
 138                 if (dev->iobase)
 139                         comedi_pci_disable(pcidev);
 140         }
 141 }
 142
 143 static struct comedi_driver apci2200_driver = {
 144         .driver_name    = "addi_apci_2200",
 145         .module         = THIS_MODULE,
 146         .auto_attach    = apci2200_auto_attach,
 147         .detach         = apci2200_detach,
 148 };
 149
 150 static int apci2200_pci_probe(struct pci_dev *dev,
 151                                         const struct pci_device_id *ent)
 152 {
 153         return comedi_pci_auto_config(dev, &apci2200_driver);
 154 }
 155
 156 static DEFINE_PCI_DEVICE_TABLE(apci2200_pci_table) = {
 157         { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
 158         { 0 }
 159 };
 160 MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
 161
 162 static struct pci_driver apci2200_pci_driver = {
 163         .name           = "addi_apci_2200",
 164         .id_table       = apci2200_pci_table,
 165         .probe          = apci2200_pci_probe,
 166         .remove         = comedi_pci_auto_unconfig,
 167 };
 168 module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
 169
 170 MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
 171 MODULE_AUTHOR("Comedi http://www.comedi.org");
 172 MODULE_LICENSE("GPL");