1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * addi_apci_2200.c
4 * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
5 * Project manager: Eric Stolz
6 *
7 * ADDI-DATA GmbH
8 * Dieselstrasse 3
9 * D-77833 Ottersweier
10 * Tel: +19(0)7223/9493-0
11 * Fax: +49(0)7223/9493-92
12 * http://www.addi-data.com
13 * info@addi-data.com
14 */
15
16#include <linux/module.h>
17#include <linux/comedi/comedi_pci.h>
18
19#include "addi_watchdog.h"
20
21/*
22 * I/O Register Map
23 */
24#define APCI2200_DI_REG 0x00
25#define APCI2200_DO_REG 0x04
26#define APCI2200_WDOG_REG 0x08
27
28static int apci2200_di_insn_bits(struct comedi_device *dev,
29 struct comedi_subdevice *s,
30 struct comedi_insn *insn,
31 unsigned int *data)
32{
33 data[1] = inw(port: dev->iobase + APCI2200_DI_REG);
34
35 return insn->n;
36}
37
38static int apci2200_do_insn_bits(struct comedi_device *dev,
39 struct comedi_subdevice *s,
40 struct comedi_insn *insn,
41 unsigned int *data)
42{
43 s->state = inw(port: dev->iobase + APCI2200_DO_REG);
44
45 if (comedi_dio_update_state(s, data))
46 outw(value: s->state, port: dev->iobase + APCI2200_DO_REG);
47
48 data[1] = s->state;
49
50 return insn->n;
51}
52
53static int apci2200_reset(struct comedi_device *dev)
54{
55 outw(value: 0x0, port: dev->iobase + APCI2200_DO_REG);
56
57 addi_watchdog_reset(iobase: dev->iobase + APCI2200_WDOG_REG);
58
59 return 0;
60}
61
62static int apci2200_auto_attach(struct comedi_device *dev,
63 unsigned long context_unused)
64{
65 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
66 struct comedi_subdevice *s;
67 int ret;
68
69 ret = comedi_pci_enable(dev);
70 if (ret)
71 return ret;
72
73 dev->iobase = pci_resource_start(pcidev, 1);
74
75 ret = comedi_alloc_subdevices(dev, num_subdevices: 3);
76 if (ret)
77 return ret;
78
79 /* Initialize the digital input subdevice */
80 s = &dev->subdevices[0];
81 s->type = COMEDI_SUBD_DI;
82 s->subdev_flags = SDF_READABLE;
83 s->n_chan = 8;
84 s->maxdata = 1;
85 s->range_table = &range_digital;
86 s->insn_bits = apci2200_di_insn_bits;
87
88 /* Initialize the digital output subdevice */
89 s = &dev->subdevices[1];
90 s->type = COMEDI_SUBD_DO;
91 s->subdev_flags = SDF_WRITABLE;
92 s->n_chan = 16;
93 s->maxdata = 1;
94 s->range_table = &range_digital;
95 s->insn_bits = apci2200_do_insn_bits;
96
97 /* Initialize the watchdog subdevice */
98 s = &dev->subdevices[2];
99 ret = addi_watchdog_init(s, iobase: dev->iobase + APCI2200_WDOG_REG);
100 if (ret)
101 return ret;
102
103 apci2200_reset(dev);
104 return 0;
105}
106
107static void apci2200_detach(struct comedi_device *dev)
108{
109 if (dev->iobase)
110 apci2200_reset(dev);
111 comedi_pci_detach(dev);
112}
113
114static struct comedi_driver apci2200_driver = {
115 .driver_name = "addi_apci_2200",
116 .module = THIS_MODULE,
117 .auto_attach = apci2200_auto_attach,
118 .detach = apci2200_detach,
119};
120
121static int apci2200_pci_probe(struct pci_dev *dev,
122 const struct pci_device_id *id)
123{
124 return comedi_pci_auto_config(pcidev: dev, driver: &apci2200_driver, context: id->driver_data);
125}
126
127static const struct pci_device_id apci2200_pci_table[] = {
128 { PCI_DEVICE(PCI_VENDOR_ID_ADDIDATA, 0x1005) },
129 { 0 }
130};
131MODULE_DEVICE_TABLE(pci, apci2200_pci_table);
132
133static struct pci_driver apci2200_pci_driver = {
134 .name = "addi_apci_2200",
135 .id_table = apci2200_pci_table,
136 .probe = apci2200_pci_probe,
137 .remove = comedi_pci_auto_unconfig,
138};
139module_comedi_pci_driver(apci2200_driver, apci2200_pci_driver);
140
141MODULE_DESCRIPTION("ADDI-DATA APCI-2200 Relay board, optically isolated");
142MODULE_AUTHOR("Comedi https://www.comedi.org");
143MODULE_LICENSE("GPL");
144

source code of linux/drivers/comedi/drivers/addi_apci_2200.c