1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * addi_apci_16xx.c
4 * Copyright (C) 2004,2005 ADDI-DATA GmbH for the source code of this module.
5 * Project manager: S. Weber
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 /*
20 * Register I/O map
21 */
22 #define APCI16XX_IN_REG(x) (((x) * 4) + 0x08)
23 #define APCI16XX_OUT_REG(x) (((x) * 4) + 0x14)
24 #define APCI16XX_DIR_REG(x) (((x) * 4) + 0x20)
25
26 enum apci16xx_boardid {
27 BOARD_APCI1648,
28 BOARD_APCI1696,
29 };
30
31 struct apci16xx_boardinfo {
32 const char *name;
33 int n_chan;
34 };
35
36 static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
37 [BOARD_APCI1648] = {
38 .name = "apci1648",
39 .n_chan = 48, /* 2 subdevices */
40 },
41 [BOARD_APCI1696] = {
42 .name = "apci1696",
43 .n_chan = 96, /* 3 subdevices */
44 },
45 };
46
apci16xx_insn_config(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)47 static int apci16xx_insn_config(struct comedi_device *dev,
48 struct comedi_subdevice *s,
49 struct comedi_insn *insn,
50 unsigned int *data)
51 {
52 unsigned int chan = CR_CHAN(insn->chanspec);
53 unsigned int mask;
54 int ret;
55
56 if (chan < 8)
57 mask = 0x000000ff;
58 else if (chan < 16)
59 mask = 0x0000ff00;
60 else if (chan < 24)
61 mask = 0x00ff0000;
62 else
63 mask = 0xff000000;
64
65 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
66 if (ret)
67 return ret;
68
69 outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
70
71 return insn->n;
72 }
73
apci16xx_dio_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)74 static int apci16xx_dio_insn_bits(struct comedi_device *dev,
75 struct comedi_subdevice *s,
76 struct comedi_insn *insn,
77 unsigned int *data)
78 {
79 if (comedi_dio_update_state(s, data))
80 outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
81
82 data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
83
84 return insn->n;
85 }
86
apci16xx_auto_attach(struct comedi_device * dev,unsigned long context)87 static int apci16xx_auto_attach(struct comedi_device *dev,
88 unsigned long context)
89 {
90 struct pci_dev *pcidev = comedi_to_pci_dev(dev);
91 const struct apci16xx_boardinfo *board = NULL;
92 struct comedi_subdevice *s;
93 unsigned int n_subdevs;
94 unsigned int last;
95 int i;
96 int ret;
97
98 if (context < ARRAY_SIZE(apci16xx_boardtypes))
99 board = &apci16xx_boardtypes[context];
100 if (!board)
101 return -ENODEV;
102 dev->board_ptr = board;
103 dev->board_name = board->name;
104
105 ret = comedi_pci_enable(dev);
106 if (ret)
107 return ret;
108
109 dev->iobase = pci_resource_start(pcidev, 0);
110
111 /*
112 * Work out the number of subdevices needed to support all the
113 * digital i/o channels on the board. Each subdevice supports
114 * up to 32 channels.
115 */
116 n_subdevs = board->n_chan / 32;
117 if ((n_subdevs * 32) < board->n_chan) {
118 last = board->n_chan - (n_subdevs * 32);
119 n_subdevs++;
120 } else {
121 last = 0;
122 }
123
124 ret = comedi_alloc_subdevices(dev, n_subdevs);
125 if (ret)
126 return ret;
127
128 /* Initialize the TTL digital i/o subdevices */
129 for (i = 0; i < n_subdevs; i++) {
130 s = &dev->subdevices[i];
131 s->type = COMEDI_SUBD_DIO;
132 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
133 s->n_chan = ((i * 32) < board->n_chan) ? 32 : last;
134 s->maxdata = 1;
135 s->range_table = &range_digital;
136 s->insn_config = apci16xx_insn_config;
137 s->insn_bits = apci16xx_dio_insn_bits;
138
139 /* Default all channels to inputs */
140 s->io_bits = 0;
141 outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
142 }
143
144 return 0;
145 }
146
147 static struct comedi_driver apci16xx_driver = {
148 .driver_name = "addi_apci_16xx",
149 .module = THIS_MODULE,
150 .auto_attach = apci16xx_auto_attach,
151 .detach = comedi_pci_detach,
152 };
153
apci16xx_pci_probe(struct pci_dev * dev,const struct pci_device_id * id)154 static int apci16xx_pci_probe(struct pci_dev *dev,
155 const struct pci_device_id *id)
156 {
157 return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
158 }
159
160 static const struct pci_device_id apci16xx_pci_table[] = {
161 { PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
162 { PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
163 { 0 }
164 };
165 MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
166
167 static struct pci_driver apci16xx_pci_driver = {
168 .name = "addi_apci_16xx",
169 .id_table = apci16xx_pci_table,
170 .probe = apci16xx_pci_probe,
171 .remove = comedi_pci_auto_unconfig,
172 };
173 module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
174
175 MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
176 MODULE_AUTHOR("Comedi https://www.comedi.org");
177 MODULE_LICENSE("GPL");
178