LXR linux/drivers/comedi/drivers/contec_pci

   1// SPDX-License-Identifier: GPL-2.0+
   2/*
   3 * comedi/drivers/contec_pci_dio.c
   4 *
   5 * COMEDI - Linux Control and Measurement Device Interface
   6 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
   7 */
   8
   9/*
  10 * Driver: contec_pci_dio
  11 * Description: Contec PIO1616L digital I/O board
  12 * Devices: [Contec] PIO1616L (contec_pci_dio)
  13 * Author: Stefano Rivoir <s.rivoir@gts.it>
  14 * Updated: Wed, 27 Jun 2007 13:00:06 +0100
  15 * Status: works
  16 *
  17 * Configuration Options: not applicable, uses comedi PCI auto config
  18 */
  19
  20#include <linux/module.h>
  21
  22#include "../comedi_pci.h"
  23
  24/*
  25 * Register map
  26 */
  27#define PIO1616L_DI_REG         0x00
  28#define PIO1616L_DO_REG         0x02
  29
  30static int contec_do_insn_bits(struct comedi_device *dev,
  31                               struct comedi_subdevice *s,
  32                               struct comedi_insn *insn,
  33                               unsigned int *data)
  34{
  35        if (comedi_dio_update_state(s, data))
  36                outw(s->state, dev->iobase + PIO1616L_DO_REG);
  37
  38        data[1] = s->state;
  39
  40        return insn->n;
  41}
  42
  43static int contec_di_insn_bits(struct comedi_device *dev,
  44                               struct comedi_subdevice *s,
  45                               struct comedi_insn *insn, unsigned int *data)
  46{
  47        data[1] = inw(dev->iobase + PIO1616L_DI_REG);
  48
  49        return insn->n;
  50}
  51
  52static int contec_auto_attach(struct comedi_device *dev,
  53                              unsigned long context_unused)
  54{
  55        struct pci_dev *pcidev = comedi_to_pci_dev(dev);
  56        struct comedi_subdevice *s;
  57        int ret;
  58
  59        ret = comedi_pci_enable(dev);
  60        if (ret)
  61                return ret;
  62        dev->iobase = pci_resource_start(pcidev, 0);
  63
  64        ret = comedi_alloc_subdevices(dev, 2);
  65        if (ret)
  66                return ret;
  67
  68        s = &dev->subdevices[0];
  69        s->type         = COMEDI_SUBD_DI;
  70        s->subdev_flags = SDF_READABLE;
  71        s->n_chan       = 16;
  72        s->maxdata      = 1;
  73        s->range_table  = &range_digital;
  74        s->insn_bits    = contec_di_insn_bits;
  75
  76        s = &dev->subdevices[1];
  77        s->type         = COMEDI_SUBD_DO;
  78        s->subdev_flags = SDF_WRITABLE;
  79        s->n_chan       = 16;
  80        s->maxdata      = 1;
  81        s->range_table  = &range_digital;
  82        s->insn_bits    = contec_do_insn_bits;
  83
  84        return 0;
  85}
  86
  87static struct comedi_driver contec_pci_dio_driver = {
  88        .driver_name    = "contec_pci_dio",
  89        .module         = THIS_MODULE,
  90        .auto_attach    = contec_auto_attach,
  91        .detach         = comedi_pci_detach,
  92};
  93
  94static int contec_pci_dio_pci_probe(struct pci_dev *dev,
  95                                    const struct pci_device_id *id)
  96{
  97        return comedi_pci_auto_config(dev, &contec_pci_dio_driver,
  98                                      id->driver_data);
  99}
 100
 101static const struct pci_device_id contec_pci_dio_pci_table[] = {
 102        { PCI_DEVICE(PCI_VENDOR_ID_CONTEC, 0x8172) },
 103        { 0 }
 104};
 105MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
 106
 107static struct pci_driver contec_pci_dio_pci_driver = {
 108        .name           = "contec_pci_dio",
 109        .id_table       = contec_pci_dio_pci_table,
 110        .probe          = contec_pci_dio_pci_probe,
 111        .remove         = comedi_pci_auto_unconfig,
 112};
 113module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
 114
 115MODULE_AUTHOR("Comedi https://www.comedi.org");
 116MODULE_DESCRIPTION("Comedi low-level driver");
 117MODULE_LICENSE("GPL");
 118