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Linux/drivers/staging/comedi/drivers/contec_pci_dio.c

  1 /*
  2     comedi/drivers/contec_pci_dio.c
  3 
  4     COMEDI - Linux Control and Measurement Device Interface
  5     Copyright (C) 2000 David A. Schleef <ds@schleef.org>
  6 
  7     This program is free software; you can redistribute it and/or modify
  8     it under the terms of the GNU General Public License as published by
  9     the Free Software Foundation; either version 2 of the License, or
 10     (at your option) any later version.
 11 
 12     This program is distributed in the hope that it will be useful,
 13     but WITHOUT ANY WARRANTY; without even the implied warranty of
 14     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 15     GNU General Public License for more details.
 16 */
 17 /*
 18 Driver: contec_pci_dio
 19 Description: Contec PIO1616L digital I/O board
 20 Devices: [Contec] PIO1616L (contec_pci_dio)
 21 Author: Stefano Rivoir <s.rivoir@gts.it>
 22 Updated: Wed, 27 Jun 2007 13:00:06 +0100
 23 Status: works
 24 
 25 Configuration Options: not applicable, uses comedi PCI auto config
 26 */
 27 
 28 #include <linux/module.h>
 29 
 30 #include "../comedi_pci.h"
 31 
 32 /*
 33  * Register map
 34  */
 35 #define PIO1616L_DI_REG         0x00
 36 #define PIO1616L_DO_REG         0x02
 37 
 38 static int contec_do_insn_bits(struct comedi_device *dev,
 39                                struct comedi_subdevice *s,
 40                                struct comedi_insn *insn,
 41                                unsigned int *data)
 42 {
 43         if (comedi_dio_update_state(s, data))
 44                 outw(s->state, dev->iobase + PIO1616L_DO_REG);
 45 
 46         data[1] = s->state;
 47 
 48         return insn->n;
 49 }
 50 
 51 static int contec_di_insn_bits(struct comedi_device *dev,
 52                                struct comedi_subdevice *s,
 53                                struct comedi_insn *insn, unsigned int *data)
 54 {
 55         data[1] = inw(dev->iobase + PIO1616L_DI_REG);
 56 
 57         return insn->n;
 58 }
 59 
 60 static int contec_auto_attach(struct comedi_device *dev,
 61                               unsigned long context_unused)
 62 {
 63         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 64         struct comedi_subdevice *s;
 65         int ret;
 66 
 67         ret = comedi_pci_enable(dev);
 68         if (ret)
 69                 return ret;
 70         dev->iobase = pci_resource_start(pcidev, 0);
 71 
 72         ret = comedi_alloc_subdevices(dev, 2);
 73         if (ret)
 74                 return ret;
 75 
 76         s = &dev->subdevices[0];
 77         s->type         = COMEDI_SUBD_DI;
 78         s->subdev_flags = SDF_READABLE;
 79         s->n_chan       = 16;
 80         s->maxdata      = 1;
 81         s->range_table  = &range_digital;
 82         s->insn_bits    = contec_di_insn_bits;
 83 
 84         s = &dev->subdevices[1];
 85         s->type         = COMEDI_SUBD_DO;
 86         s->subdev_flags = SDF_WRITABLE;
 87         s->n_chan       = 16;
 88         s->maxdata      = 1;
 89         s->range_table  = &range_digital;
 90         s->insn_bits    = contec_do_insn_bits;
 91 
 92         return 0;
 93 }
 94 
 95 static struct comedi_driver contec_pci_dio_driver = {
 96         .driver_name    = "contec_pci_dio",
 97         .module         = THIS_MODULE,
 98         .auto_attach    = contec_auto_attach,
 99         .detach         = comedi_pci_detach,
100 };
101 
102 static int contec_pci_dio_pci_probe(struct pci_dev *dev,
103                                     const struct pci_device_id *id)
104 {
105         return comedi_pci_auto_config(dev, &contec_pci_dio_driver,
106                                       id->driver_data);
107 }
108 
109 static const struct pci_device_id contec_pci_dio_pci_table[] = {
110         { PCI_DEVICE(PCI_VENDOR_ID_CONTEC, 0x8172) },
111         { 0 }
112 };
113 MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
114 
115 static struct pci_driver contec_pci_dio_pci_driver = {
116         .name           = "contec_pci_dio",
117         .id_table       = contec_pci_dio_pci_table,
118         .probe          = contec_pci_dio_pci_probe,
119         .remove         = comedi_pci_auto_unconfig,
120 };
121 module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
122 
123 MODULE_AUTHOR("Comedi http://www.comedi.org");
124 MODULE_DESCRIPTION("Comedi low-level driver");
125 MODULE_LICENSE("GPL");
126 

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