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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 #include <linux/pci.h>
 30 
 31 #include "../comedidev.h"
 32 
 33 #define PCI_DEVICE_ID_PIO1616L 0x8172
 34 
 35 /*
 36  * Register map
 37  */
 38 #define PIO1616L_DI_REG         0x00
 39 #define PIO1616L_DO_REG         0x02
 40 
 41 static int contec_do_insn_bits(struct comedi_device *dev,
 42                                struct comedi_subdevice *s,
 43                                struct comedi_insn *insn,
 44                                unsigned int *data)
 45 {
 46         if (comedi_dio_update_state(s, data))
 47                 outw(s->state, dev->iobase + PIO1616L_DO_REG);
 48 
 49         data[1] = s->state;
 50 
 51         return insn->n;
 52 }
 53 
 54 static int contec_di_insn_bits(struct comedi_device *dev,
 55                                struct comedi_subdevice *s,
 56                                struct comedi_insn *insn, unsigned int *data)
 57 {
 58         data[1] = inw(dev->iobase + PIO1616L_DI_REG);
 59 
 60         return insn->n;
 61 }
 62 
 63 static int contec_auto_attach(struct comedi_device *dev,
 64                                         unsigned long context_unused)
 65 {
 66         struct pci_dev *pcidev = comedi_to_pci_dev(dev);
 67         struct comedi_subdevice *s;
 68         int ret;
 69 
 70         ret = comedi_pci_enable(dev);
 71         if (ret)
 72                 return ret;
 73         dev->iobase = pci_resource_start(pcidev, 0);
 74 
 75         ret = comedi_alloc_subdevices(dev, 2);
 76         if (ret)
 77                 return ret;
 78 
 79         s = &dev->subdevices[0];
 80         s->type         = COMEDI_SUBD_DI;
 81         s->subdev_flags = SDF_READABLE;
 82         s->n_chan       = 16;
 83         s->maxdata      = 1;
 84         s->range_table  = &range_digital;
 85         s->insn_bits    = contec_di_insn_bits;
 86 
 87         s = &dev->subdevices[1];
 88         s->type         = COMEDI_SUBD_DO;
 89         s->subdev_flags = SDF_WRITABLE;
 90         s->n_chan       = 16;
 91         s->maxdata      = 1;
 92         s->range_table  = &range_digital;
 93         s->insn_bits    = contec_do_insn_bits;
 94 
 95         return 0;
 96 }
 97 
 98 static struct comedi_driver contec_pci_dio_driver = {
 99         .driver_name    = "contec_pci_dio",
100         .module         = THIS_MODULE,
101         .auto_attach    = contec_auto_attach,
102         .detach         = comedi_pci_disable,
103 };
104 
105 static int contec_pci_dio_pci_probe(struct pci_dev *dev,
106                                     const struct pci_device_id *id)
107 {
108         return comedi_pci_auto_config(dev, &contec_pci_dio_driver,
109                                       id->driver_data);
110 }
111 
112 static const struct pci_device_id contec_pci_dio_pci_table[] = {
113         { PCI_DEVICE(PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L) },
114         { 0 }
115 };
116 MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
117 
118 static struct pci_driver contec_pci_dio_pci_driver = {
119         .name           = "contec_pci_dio",
120         .id_table       = contec_pci_dio_pci_table,
121         .probe          = contec_pci_dio_pci_probe,
122         .remove         = comedi_pci_auto_unconfig,
123 };
124 module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
125 
126 MODULE_AUTHOR("Comedi http://www.comedi.org");
127 MODULE_DESCRIPTION("Comedi low-level driver");
128 MODULE_LICENSE("GPL");
129 

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