contec_pci_dio.c revision 641f064e5df6fb3aaeb6256031a153a5efb16ca6 
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/pci.h>
29
30#include "../comedidev.h"
31
32#define PCI_DEVICE_ID_PIO1616L 0x8172
33
34/*
35 * Register map
36 */
37#define PIO1616L_DI_REG		0x00
38#define PIO1616L_DO_REG		0x02
39
40static int contec_do_insn_bits(struct comedi_device *dev,
41			       struct comedi_subdevice *s,
42			       struct comedi_insn *insn, unsigned int *data)
43{
44	unsigned int mask = data[0];
45	unsigned int bits = data[1];
46
47	if (mask) {
48		s->state &= ~mask;
49		s->state |= (bits & mask);
50
51		outw(s->state, dev->iobase + PIO1616L_DO_REG);
52	}
53
54	data[1] = s->state;
55
56	return insn->n;
57}
58
59static int contec_di_insn_bits(struct comedi_device *dev,
60			       struct comedi_subdevice *s,
61			       struct comedi_insn *insn, unsigned int *data)
62{
63	data[1] = inw(dev->iobase + PIO1616L_DI_REG);
64
65	return insn->n;
66}
67
68static int contec_auto_attach(struct comedi_device *dev,
69					unsigned long context_unused)
70{
71	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
72	struct comedi_subdevice *s;
73	int ret;
74
75	ret = comedi_pci_enable(dev);
76	if (ret)
77		return ret;
78	dev->iobase = pci_resource_start(pcidev, 0);
79
80	ret = comedi_alloc_subdevices(dev, 2);
81	if (ret)
82		return ret;
83
84	s = &dev->subdevices[0];
85	s->type		= COMEDI_SUBD_DI;
86	s->subdev_flags	= SDF_READABLE;
87	s->n_chan	= 16;
88	s->maxdata	= 1;
89	s->range_table	= &range_digital;
90	s->insn_bits	= contec_di_insn_bits;
91
92	s = &dev->subdevices[1];
93	s->type		= COMEDI_SUBD_DO;
94	s->subdev_flags	= SDF_WRITABLE;
95	s->n_chan	= 16;
96	s->maxdata	= 1;
97	s->range_table	= &range_digital;
98	s->insn_bits	= contec_do_insn_bits;
99
100	dev_info(dev->class_dev, "%s attached\n", dev->board_name);
101
102	return 0;
103}
104
105static struct comedi_driver contec_pci_dio_driver = {
106	.driver_name	= "contec_pci_dio",
107	.module		= THIS_MODULE,
108	.auto_attach	= contec_auto_attach,
109	.detach		= comedi_pci_disable,
110};
111
112static int contec_pci_dio_pci_probe(struct pci_dev *dev,
113				    const struct pci_device_id *id)
114{
115	return comedi_pci_auto_config(dev, &contec_pci_dio_driver,
116				      id->driver_data);
117}
118
119static DEFINE_PCI_DEVICE_TABLE(contec_pci_dio_pci_table) = {
120	{ PCI_DEVICE(PCI_VENDOR_ID_CONTEC, PCI_DEVICE_ID_PIO1616L) },
121	{ 0 }
122};
123MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
124
125static struct pci_driver contec_pci_dio_pci_driver = {
126	.name		= "contec_pci_dio",
127	.id_table	= contec_pci_dio_pci_table,
128	.probe		= contec_pci_dio_pci_probe,
129	.remove		= comedi_pci_auto_unconfig,
130};
131module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
132
133MODULE_AUTHOR("Comedi http://www.comedi.org");
134MODULE_DESCRIPTION("Comedi low-level driver");
135MODULE_LICENSE("GPL");
136