1/*
2 * addi_apci_16xx.c
3 * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
4 * Project manager: S. Weber
5 *
6 *	ADDI-DATA GmbH
7 *	Dieselstrasse 3
8 *	D-77833 Ottersweier
9 *	Tel: +19(0)7223/9493-0
10 *	Fax: +49(0)7223/9493-92
11 *	http://www.addi-data.com
12 *	info@addi-data.com
13 *
14 * This program is free software; you can redistribute it and/or modify it
15 * under the terms of the GNU General Public License as published by the
16 * Free Software Foundation; either version 2 of the License, or (at your
17 * option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful, but WITHOUT
20 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
21 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
22 * more details.
23 */
24
25#include <linux/module.h>
26#include <linux/pci.h>
27
28#include "../comedidev.h"
29
30/*
31 * Register I/O map
32 */
33#define APCI16XX_IN_REG(x)		(((x) * 4) + 0x08)
34#define APCI16XX_OUT_REG(x)		(((x) * 4) + 0x14)
35#define APCI16XX_DIR_REG(x)		(((x) * 4) + 0x20)
36
37enum apci16xx_boardid {
38	BOARD_APCI1648,
39	BOARD_APCI1696,
40};
41
42struct apci16xx_boardinfo {
43	const char *name;
44	int n_chan;
45};
46
47static const struct apci16xx_boardinfo apci16xx_boardtypes[] = {
48	[BOARD_APCI1648] = {
49		.name		= "apci1648",
50		.n_chan		= 48,		/* 2 subdevices */
51	},
52	[BOARD_APCI1696] = {
53		.name		= "apci1696",
54		.n_chan		= 96,		/* 3 subdevices */
55	},
56};
57
58static int apci16xx_insn_config(struct comedi_device *dev,
59				struct comedi_subdevice *s,
60				struct comedi_insn *insn,
61				unsigned int *data)
62{
63	unsigned int chan = CR_CHAN(insn->chanspec);
64	unsigned int mask;
65	int ret;
66
67	if (chan < 8)
68		mask = 0x000000ff;
69	else if (chan < 16)
70		mask = 0x0000ff00;
71	else if (chan < 24)
72		mask = 0x00ff0000;
73	else
74		mask = 0xff000000;
75
76	ret = comedi_dio_insn_config(dev, s, insn, data, mask);
77	if (ret)
78		return ret;
79
80	outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(s->index));
81
82	return insn->n;
83}
84
85static int apci16xx_dio_insn_bits(struct comedi_device *dev,
86				  struct comedi_subdevice *s,
87				  struct comedi_insn *insn,
88				  unsigned int *data)
89{
90	if (comedi_dio_update_state(s, data))
91		outl(s->state, dev->iobase + APCI16XX_OUT_REG(s->index));
92
93	data[1] = inl(dev->iobase + APCI16XX_IN_REG(s->index));
94
95	return insn->n;
96}
97
98static int apci16xx_auto_attach(struct comedi_device *dev,
99				unsigned long context)
100{
101	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
102	const struct apci16xx_boardinfo *board = NULL;
103	struct comedi_subdevice *s;
104	unsigned int n_subdevs;
105	unsigned int last;
106	int i;
107	int ret;
108
109	if (context < ARRAY_SIZE(apci16xx_boardtypes))
110		board = &apci16xx_boardtypes[context];
111	if (!board)
112		return -ENODEV;
113	dev->board_ptr = board;
114	dev->board_name = board->name;
115
116	ret = comedi_pci_enable(dev);
117	if (ret)
118		return ret;
119
120	dev->iobase = pci_resource_start(pcidev, 0);
121
122	/*
123	 * Work out the nubmer of subdevices needed to support all the
124	 * digital i/o channels on the board. Each subdevice supports
125	 * up to 32 channels.
126	 */
127	n_subdevs = board->n_chan / 32;
128	if ((n_subdevs * 32) < board->n_chan) {
129		last = board->n_chan - (n_subdevs * 32);
130		n_subdevs++;
131	} else {
132		last = 0;
133	}
134
135	ret = comedi_alloc_subdevices(dev, n_subdevs);
136	if (ret)
137		return ret;
138
139	/* Initialize the TTL digital i/o subdevices */
140	for (i = 0; i < n_subdevs; i++) {
141		s = &dev->subdevices[i];
142		s->type		= COMEDI_SUBD_DIO;
143		s->subdev_flags	= SDF_WRITEABLE | SDF_READABLE;
144		s->n_chan	= ((i * 32) < board->n_chan) ? 32 : last;
145		s->maxdata	= 1;
146		s->range_table	= &range_digital;
147		s->insn_config	= apci16xx_insn_config;
148		s->insn_bits	= apci16xx_dio_insn_bits;
149
150		/* Default all channels to inputs */
151		s->io_bits	= 0;
152		outl(s->io_bits, dev->iobase + APCI16XX_DIR_REG(i));
153	}
154
155	return 0;
156}
157
158static struct comedi_driver apci16xx_driver = {
159	.driver_name	= "addi_apci_16xx",
160	.module		= THIS_MODULE,
161	.auto_attach	= apci16xx_auto_attach,
162	.detach		= comedi_pci_detach,
163};
164
165static int apci16xx_pci_probe(struct pci_dev *dev,
166			      const struct pci_device_id *id)
167{
168	return comedi_pci_auto_config(dev, &apci16xx_driver, id->driver_data);
169}
170
171static const struct pci_device_id apci16xx_pci_table[] = {
172	{ PCI_VDEVICE(ADDIDATA, 0x1009), BOARD_APCI1648 },
173	{ PCI_VDEVICE(ADDIDATA, 0x100a), BOARD_APCI1696 },
174	{ 0 }
175};
176MODULE_DEVICE_TABLE(pci, apci16xx_pci_table);
177
178static struct pci_driver apci16xx_pci_driver = {
179	.name		= "addi_apci_16xx",
180	.id_table	= apci16xx_pci_table,
181	.probe		= apci16xx_pci_probe,
182	.remove		= comedi_pci_auto_unconfig,
183};
184module_comedi_pci_driver(apci16xx_driver, apci16xx_pci_driver);
185
186MODULE_DESCRIPTION("ADDI-DATA APCI-1648/1696, TTL I/O boards");
187MODULE_AUTHOR("Comedi http://www.comedi.org");
188MODULE_LICENSE("GPL");
189