contec_pci_dio.c revision c93999c21319439c4fe2da85f2ec40ed477379ac 
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/*
18Driver: contec_pci_dio
19Description: Contec PIO1616L digital I/O board
20Devices: [Contec] PIO1616L (contec_pci_dio)
21Author: Stefano Rivoir <s.rivoir@gts.it>
22Updated: Wed, 27 Jun 2007 13:00:06 +0100
23Status: works
24
25Configuration 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
41static 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
54static 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
63static 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
98static 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
105static 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
112static const struct pci_device_id contec_pci_dio_pci_table[] = {
113	{ PCI_DEVICE(PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L) },
114	{ 0 }
115};
116MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
117
118static 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};
124module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
125
126MODULE_AUTHOR("Comedi http://www.comedi.org");
127MODULE_DESCRIPTION("Comedi low-level driver");
128MODULE_LICENSE("GPL");
129