1/*
2 * addi_apci_1516.c
3 * Copyright (C) 2004,2005  ADDI-DATA GmbH for the source code of this module.
4 * Project manager: Eric Stolz
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#include "addi_watchdog.h"
30#include "comedi_fc.h"
31
32/*
33 * PCI bar 1 I/O Register map - Digital input/output
34 */
35#define APCI1516_DI_REG			0x00
36#define APCI1516_DO_REG			0x04
37
38/*
39 * PCI bar 2 I/O Register map - Watchdog (APCI-1516 and APCI-2016)
40 */
41#define APCI1516_WDOG_REG		0x00
42
43enum apci1516_boardid {
44	BOARD_APCI1016,
45	BOARD_APCI1516,
46	BOARD_APCI2016,
47};
48
49struct apci1516_boardinfo {
50	const char *name;
51	int di_nchan;
52	int do_nchan;
53	int has_wdog;
54};
55
56static const struct apci1516_boardinfo apci1516_boardtypes[] = {
57	[BOARD_APCI1016] = {
58		.name		= "apci1016",
59		.di_nchan	= 16,
60	},
61	[BOARD_APCI1516] = {
62		.name		= "apci1516",
63		.di_nchan	= 8,
64		.do_nchan	= 8,
65		.has_wdog	= 1,
66	},
67	[BOARD_APCI2016] = {
68		.name		= "apci2016",
69		.do_nchan	= 16,
70		.has_wdog	= 1,
71	},
72};
73
74struct apci1516_private {
75	unsigned long wdog_iobase;
76};
77
78static int apci1516_di_insn_bits(struct comedi_device *dev,
79				 struct comedi_subdevice *s,
80				 struct comedi_insn *insn,
81				 unsigned int *data)
82{
83	data[1] = inw(dev->iobase + APCI1516_DI_REG);
84
85	return insn->n;
86}
87
88static int apci1516_do_insn_bits(struct comedi_device *dev,
89				 struct comedi_subdevice *s,
90				 struct comedi_insn *insn,
91				 unsigned int *data)
92{
93	s->state = inw(dev->iobase + APCI1516_DO_REG);
94
95	if (comedi_dio_update_state(s, data))
96		outw(s->state, dev->iobase + APCI1516_DO_REG);
97
98	data[1] = s->state;
99
100	return insn->n;
101}
102
103static int apci1516_reset(struct comedi_device *dev)
104{
105	const struct apci1516_boardinfo *this_board = dev->board_ptr;
106	struct apci1516_private *devpriv = dev->private;
107
108	if (!this_board->has_wdog)
109		return 0;
110
111	outw(0x0, dev->iobase + APCI1516_DO_REG);
112
113	addi_watchdog_reset(devpriv->wdog_iobase);
114
115	return 0;
116}
117
118static int apci1516_auto_attach(struct comedi_device *dev,
119				unsigned long context)
120{
121	struct pci_dev *pcidev = comedi_to_pci_dev(dev);
122	const struct apci1516_boardinfo *this_board = NULL;
123	struct apci1516_private *devpriv;
124	struct comedi_subdevice *s;
125	int ret;
126
127	if (context < ARRAY_SIZE(apci1516_boardtypes))
128		this_board = &apci1516_boardtypes[context];
129	if (!this_board)
130		return -ENODEV;
131	dev->board_ptr = this_board;
132	dev->board_name = this_board->name;
133
134	devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
135	if (!devpriv)
136		return -ENOMEM;
137
138	ret = comedi_pci_enable(dev);
139	if (ret)
140		return ret;
141
142	dev->iobase = pci_resource_start(pcidev, 1);
143	devpriv->wdog_iobase = pci_resource_start(pcidev, 2);
144
145	ret = comedi_alloc_subdevices(dev, 3);
146	if (ret)
147		return ret;
148
149	/* Initialize the digital input subdevice */
150	s = &dev->subdevices[0];
151	if (this_board->di_nchan) {
152		s->type		= COMEDI_SUBD_DI;
153		s->subdev_flags	= SDF_READABLE;
154		s->n_chan	= this_board->di_nchan;
155		s->maxdata	= 1;
156		s->range_table	= &range_digital;
157		s->insn_bits	= apci1516_di_insn_bits;
158	} else {
159		s->type		= COMEDI_SUBD_UNUSED;
160	}
161
162	/* Initialize the digital output subdevice */
163	s = &dev->subdevices[1];
164	if (this_board->do_nchan) {
165		s->type		= COMEDI_SUBD_DO;
166		s->subdev_flags	= SDF_WRITEABLE;
167		s->n_chan	= this_board->do_nchan;
168		s->maxdata	= 1;
169		s->range_table	= &range_digital;
170		s->insn_bits	= apci1516_do_insn_bits;
171	} else {
172		s->type		= COMEDI_SUBD_UNUSED;
173	}
174
175	/* Initialize the watchdog subdevice */
176	s = &dev->subdevices[2];
177	if (this_board->has_wdog) {
178		ret = addi_watchdog_init(s, devpriv->wdog_iobase);
179		if (ret)
180			return ret;
181	} else {
182		s->type		= COMEDI_SUBD_UNUSED;
183	}
184
185	apci1516_reset(dev);
186	return 0;
187}
188
189static void apci1516_detach(struct comedi_device *dev)
190{
191	if (dev->iobase)
192		apci1516_reset(dev);
193	comedi_pci_detach(dev);
194}
195
196static struct comedi_driver apci1516_driver = {
197	.driver_name	= "addi_apci_1516",
198	.module		= THIS_MODULE,
199	.auto_attach	= apci1516_auto_attach,
200	.detach		= apci1516_detach,
201};
202
203static int apci1516_pci_probe(struct pci_dev *dev,
204			      const struct pci_device_id *id)
205{
206	return comedi_pci_auto_config(dev, &apci1516_driver, id->driver_data);
207}
208
209static const struct pci_device_id apci1516_pci_table[] = {
210	{ PCI_VDEVICE(ADDIDATA, 0x1000), BOARD_APCI1016 },
211	{ PCI_VDEVICE(ADDIDATA, 0x1001), BOARD_APCI1516 },
212	{ PCI_VDEVICE(ADDIDATA, 0x1002), BOARD_APCI2016 },
213	{ 0 }
214};
215MODULE_DEVICE_TABLE(pci, apci1516_pci_table);
216
217static struct pci_driver apci1516_pci_driver = {
218	.name		= "addi_apci_1516",
219	.id_table	= apci1516_pci_table,
220	.probe		= apci1516_pci_probe,
221	.remove		= comedi_pci_auto_unconfig,
222};
223module_comedi_pci_driver(apci1516_driver, apci1516_pci_driver);
224
225MODULE_DESCRIPTION("ADDI-DATA APCI-1016/1516/2016, 16 channel DIO boards");
226MODULE_AUTHOR("Comedi http://www.comedi.org");
227MODULE_LICENSE("GPL");
228