1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * addi_apci_1516.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 * PCI bar 1 I/O Register map - Digital input/output
23 */
24#define APCI1516_DI_REG 0x00
25#define APCI1516_DO_REG 0x04
26
27/*
28 * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
29 */
30#define APCI1516_WDOG_REG 0x00
31
32enum apci1516_boardid {
33 BOARD_APCI1016,
34 BOARD_APCI1516,
35 BOARD_APCI2016,
36};
37
38struct apci1516_boardinfo {
39 const char *name;
40 int di_nchan;
41 int do_nchan;
42 int has_wdog;
43};
44
45static const struct apci1516_boardinfo apci1516_boardtypes[] = {
46 [BOARD_APCI1016] = {
47 .name = "apci1016",
48 .di_nchan = 16,
49 },
50 [BOARD_APCI1516] = {
51 .name = "apci1516",
52 .di_nchan = 8,
53 .do_nchan = 8,
54 .has_wdog = 1,
55 },
56 [BOARD_APCI2016] = {
57 .name = "apci2016",
58 .do_nchan = 16,
59 .has_wdog = 1,
60 },
61};
62
63struct apci1516_private {
64 unsigned long wdog_iobase;
65};
66
67static int apci1516_di_insn_bits(struct comedi_device *dev,
68 struct comedi_subdevice *s,
69 struct comedi_insn *insn,
70 unsigned int *data)
71{
72 data[1] = inw(port: dev->iobase + APCI1516_DI_REG);
73
74 return insn->n;
75}
76
77static int apci1516_do_insn_bits(struct comedi_device *dev,
78 struct comedi_subdevice *s,
79 struct comedi_insn *insn,
80 unsigned int *data)
81{
82 s->state = inw(port: dev->iobase + APCI1516_DO_REG);
83
84 if (comedi_dio_update_state(s, data))
85 outw(value: s->state, port: dev->iobase + APCI1516_DO_REG);
86
87 data[1] = s->state;
88
89 return insn->n;
90}
91
92static int apci1516_reset(struct comedi_device *dev)
93{
94 const struct apci1516_boardinfo *board = dev->board_ptr;
95 struct apci1516_private *devpriv = dev->private;
96
97 if (!board->has_wdog)
98 return 0;
99
100 outw(value: 0x0, port: dev->iobase + APCI1516_DO_REG);
101
102 addi_watchdog_reset(iobase: devpriv->wdog_iobase);
103
104 return 0;
105}
106
107static int apci1516_auto_attach(struct comedi_device *dev,
108 unsigned long context)
109{
110 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
111 const struct apci1516_boardinfo *board = NULL;
112 struct apci1516_private *devpriv;
113 struct comedi_subdevice *s;
114 int ret;
115
116 if (context < ARRAY_SIZE(apci1516_boardtypes))
117 board = &apci1516_boardtypes[context];
118 if (!board)
119 return -ENODEV;
120 dev->board_ptr = board;
121 dev->board_name = board->name;
122
123 devpriv = comedi_alloc_devpriv(dev, size: sizeof(*devpriv));
124 if (!devpriv)
125 return -ENOMEM;
126
127 ret = comedi_pci_enable(dev);
128 if (ret)
129 return ret;
130
131 dev->iobase = pci_resource_start(pcidev, 1);
132 devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
133
134 ret = comedi_alloc_subdevices(dev, num_subdevices: 3);
135 if (ret)
136 return ret;
137
138 /* Initialize the digital input subdevice */
139 s = &dev->subdevices[0];
140 if (board->di_nchan) {
141 s->type = COMEDI_SUBD_DI;
142 s->subdev_flags = SDF_READABLE;
143 s->n_chan = board->di_nchan;
144 s->maxdata = 1;
145 s->range_table = &range_digital;
146 s->insn_bits = apci1516_di_insn_bits;
147 } else {
148 s->type = COMEDI_SUBD_UNUSED;
149 }
150
151 /* Initialize the digital output subdevice */
152 s = &dev->subdevices[1];
153 if (board->do_nchan) {
154 s->type = COMEDI_SUBD_DO;
155 s->subdev_flags = SDF_WRITABLE;
156 s->n_chan = board->do_nchan;
157 s->maxdata = 1;
158 s->range_table = &range_digital;
159 s->insn_bits = apci1516_do_insn_bits;
160 } else {
161 s->type = COMEDI_SUBD_UNUSED;
162 }
163
164 /* Initialize the watchdog subdevice */
165 s = &dev->subdevices[2];
166 if (board->has_wdog) {
167 ret = addi_watchdog_init(s, iobase: devpriv->wdog_iobase);
168 if (ret)
169 return ret;
170 } else {
171 s->type = COMEDI_SUBD_UNUSED;
172 }
173
174 apci1516_reset(dev);
175 return 0;
176}
177
178static void apci1516_detach(struct comedi_device *dev)
179{
180 if (dev->iobase)
181 apci1516_reset(dev);
182 comedi_pci_detach(dev);
183}
184
185static struct comedi_driver apci1516_driver = {
186 .driver_name = "addi_apci_1516",
187 .module = THIS_MODULE,
188 .auto_attach = apci1516_auto_attach,
189 .detach = apci1516_detach,
190};
191
192static int apci1516_pci_probe(struct pci_dev *dev,
193 const struct pci_device_id *id)
194{
195 return comedi_pci_auto_config(pcidev: dev, driver: &apci1516_driver, context: id->driver_data);
196}
197
198static const struct pci_device_id apci1516_pci_table[] = {
199 { PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
200 { PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
201 { PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
202 { 0 }
203};
204MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
205
206static struct pci_driver apci1516_pci_driver = {
207 .name = "addi_apci_1516",
208 .id_table = apci1516_pci_table,
209 .probe = apci1516_pci_probe,
210 .remove = comedi_pci_auto_unconfig,
211};
212module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
213
214MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
215MODULE_AUTHOR("Comedi https://www.comedi.org");
216MODULE_LICENSE("GPL");
217

source code of linux/drivers/comedi/drivers/addi_apci_1516.c