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#include <linux/comedi/comedi_pci.h>
22
23/*
24 * Register map
25 */
26#define PIO1616L_DI_REG		0x00
27#define PIO1616L_DO_REG		0x02
28
29static int contec_do_insn_bits(struct comedi_device *dev,
30			       struct comedi_subdevice *s,
31			       struct comedi_insn *insn,
32			       unsigned int *data)
33{
34	if (comedi_dio_update_state(s, data))
35		outw(s->state, dev->iobase + PIO1616L_DO_REG);
36
37	data[1] = s->state;
38
39	return insn->n;
40}
41
42static int contec_di_insn_bits(struct comedi_device *dev,
43			       struct comedi_subdevice *s,
44			       struct comedi_insn *insn, unsigned int *data)
45{
46	data[1] = inw(dev->iobase + PIO1616L_DI_REG);
47
48	return insn->n;
49}
50
51static int contec_auto_attach(struct comedi_device *dev,
52			      unsigned long context_unused)
53{
54	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
55	struct comedi_subdevice *s;
56	int ret;
57
58	ret = comedi_pci_enable(dev);
59	if (ret)
60		return ret;
61	dev->iobase = pci_resource_start(pcidev, 0);
62
63	ret = comedi_alloc_subdevices(dev, 2);
64	if (ret)
65		return ret;
66
67	s = &dev->subdevices[0];
68	s->type		= COMEDI_SUBD_DI;
69	s->subdev_flags	= SDF_READABLE;
70	s->n_chan	= 16;
71	s->maxdata	= 1;
72	s->range_table	= &range_digital;
73	s->insn_bits	= contec_di_insn_bits;
74
75	s = &dev->subdevices[1];
76	s->type		= COMEDI_SUBD_DO;
77	s->subdev_flags	= SDF_WRITABLE;
78	s->n_chan	= 16;
79	s->maxdata	= 1;
80	s->range_table	= &range_digital;
81	s->insn_bits	= contec_do_insn_bits;
82
83	return 0;
84}
85
86static struct comedi_driver contec_pci_dio_driver = {
87	.driver_name	= "contec_pci_dio",
88	.module		= THIS_MODULE,
89	.auto_attach	= contec_auto_attach,
90	.detach		= comedi_pci_detach,
91};
92
93static int contec_pci_dio_pci_probe(struct pci_dev *dev,
94				    const struct pci_device_id *id)
95{
96	return comedi_pci_auto_config(dev, &contec_pci_dio_driver,
97				      id->driver_data);
98}
99
100static const struct pci_device_id contec_pci_dio_pci_table[] = {
101	{ PCI_DEVICE(PCI_VENDOR_ID_CONTEC, 0x8172) },
102	{ 0 }
103};
104MODULE_DEVICE_TABLE(pci, contec_pci_dio_pci_table);
105
106static struct pci_driver contec_pci_dio_pci_driver = {
107	.name		= "contec_pci_dio",
108	.id_table	= contec_pci_dio_pci_table,
109	.probe		= contec_pci_dio_pci_probe,
110	.remove		= comedi_pci_auto_unconfig,
111};
112module_comedi_pci_driver(contec_pci_dio_driver, contec_pci_dio_pci_driver);
113
114MODULE_AUTHOR("Comedi https://www.comedi.org");
115MODULE_DESCRIPTION("Comedi low-level driver");
116MODULE_LICENSE("GPL");
117