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

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * addi_apci_2200.c
   4 * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
   5 * Project manager: Eric Stolz
   6 *
   7 *      ADDI-DATA GmbH
   8 *      Dieselstrasse 3
   9 *      D-77833 Ottersweier
  10 *      Tel: +19(0)7223/9493-0
  11 *      Fax: +49(0)7223/9493-92
  12 *      http://www.addi-data.com
  13 *      info@addi-data.com
  14 */
  15
  16#include <linux/module.h>
  17
  18#include "../comedi_pci.h"
  19#include "addi_watchdog.h"
  20
  21/*
  22 * I/O Register Map
  23 */
  24#define APCI2200_DI_REG                 0x00
  25#define APCI2200_DO_REG                 0x04
  26#define APCI2200_WDOG_REG               0x08
  27
  28static int apci2200_di_insn_bits(struct comedi_device *dev,
  29                                 struct comedi_subdevice *s,
  30                                 struct comedi_insn *insn,
  31                                 unsigned int *data)
  32{
  33        data[1] = inw(dev->iobase + APCI2200_DI_REG);
  34
  35        return insn->n;
  36}
  37
  38static int apci2200_do_insn_bits(struct comedi_device *dev,
  39                                 struct comedi_subdevice *s,
  40                                 struct comedi_insn *insn,
  41                                 unsigned int *data)
  42{
  43        s->state = inw(dev->iobase + APCI2200_DO_REG);
  44
  45        if (comedi_dio_update_state(s, data))
  46                outw(s->state, dev->iobase + APCI2200_DO_REG);
  47
  48        data[1] = s->state;
  49
  50        return insn->n;
  51}
  52
  53static int apci2200_reset(struct comedi_device *dev)
  54{
  55        outw(0x0, dev->iobase + APCI2200_DO_REG);
  56
  57        addi_watchdog_reset(dev->iobase + APCI2200_WDOG_REG);
  58
  59        return 0;
  60}
  61
  62static int apci2200_auto_attach(struct comedi_device *dev,
  63                                unsigned long context_unused)
  64{
  65        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  66        struct comedi_subdevice *s;
  67        int ret;
  68
  69        ret = comedi_pci_enable(dev);
  70        if (ret)
  71                return ret;
  72
  73        dev->iobase = pci_resource_start(pcidev, 1);
  74
  75        ret = comedi_alloc_subdevices(dev, 3);
  76        if (ret)
  77                return ret;
  78
  79        /* Initialize the digital input subdevice */
  80        s = &dev->subdevices[0];
  81        s->type         = COMEDI_SUBD_DI;
  82        s->subdev_flags = SDF_READABLE;
  83        s->n_chan       = 8;
  84        s->maxdata      = 1;
  85        s->range_table  = &range_digital;
  86        s->insn_bits    = apci2200_di_insn_bits;
  87
  88        /* Initialize the digital output subdevice */
  89        s = &dev->subdevices[1];
  90        s->type         = COMEDI_SUBD_DO;
  91        s->subdev_flags = SDF_WRITABLE;
  92        s->n_chan       = 16;
  93        s->maxdata      = 1;
  94        s->range_table  = &range_digital;
  95        s->insn_bits    = apci2200_do_insn_bits;
  96
  97        /* Initialize the watchdog subdevice */
  98        s = &dev->subdevices[2];
  99        ret = addi_watchdog_init(s, dev->iobase + APCI2200_WDOG_REG);
 100        if (ret)
 101                return ret;
 102
 103        apci2200_reset(dev);
 104        return 0;
 105}
 106
 107static void apci2200_detach(struct comedi_device *dev)
 108{
 109        if (dev->iobase)
 110                apci2200_reset(dev);
 111        comedi_pci_detach(dev);
 112}
 113
 114static struct comedi_driver apci2200_driver = {
 115        .driver_name    = "addi_apci_2200",
 116        .module         = THIS_MODULE,
 117        .auto_attach    = apci2200_auto_attach,
 118        .detach         = apci2200_detach,
 119};
 120
 121static int apci2200_pci_probe(struct pci_dev *dev,
 122                              const struct pci_device_id *id)
 123{
 124        return comedi_pci_auto_config(dev, &apci2200_driver, id->driver_data);
 125}
 126
 127static const struct pci_device_id apci2200_pci_table[] = {
 128        { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
 129        { 0 }
 130};
 131MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
 132
 133static struct pci_driver apci2200_pci_driver = {
 134        .name           = "addi_apci_2200",
 135        .id_table       = apci2200_pci_table,
 136        .probe          = apci2200_pci_probe,
 137        .remove         = comedi_pci_auto_unconfig,
 138};
 139module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
 140
 141MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
 142MODULE_AUTHOR("Comedi http://www.comedi.org");
 143MODULE_LICENSE("GPL");
 144