aio_iiro_16.c revision 790c55415aa31f4c732729f94d2c3a54f7d3bfc2 
1/*
2
3    comedi/drivers/aio_iiro_16.c
4
5    Driver for Acces I/O Products PC-104 AIO-IIRO-16 Digital I/O board
6    Copyright (C) 2006 C&C Technologies, Inc.
7
8    This program is free software; you can redistribute it and/or modify
9    it under the terms of the GNU General Public License as published by
10    the Free Software Foundation; either version 2 of the License, or
11    (at your option) any later version.
12
13    This program is distributed in the hope that it will be useful,
14    but WITHOUT ANY WARRANTY; without even the implied warranty of
15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16    GNU General Public License for more details.
17
18    You should have received a copy of the GNU General Public License
19    along with this program; if not, write to the Free Software
20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21*/
22
23/*
24
25Driver: aio_iiro_16
26Description: Acces I/O Products PC-104 IIRO16 Relay And Isolated Input Board
27Author: Zachary Ware <zach.ware@cctechnol.com>
28Devices:
29 [Acces I/O] PC-104 AIO12-8
30Status: experimental
31
32Configuration Options:
33  [0] - I/O port base address
34
35*/
36
37#include "../comedidev.h"
38#include <linux/ioport.h>
39
40#define AIO_IIRO_16_SIZE	0x08
41#define AIO_IIRO_16_RELAY_0_7	0x00
42#define AIO_IIRO_16_INPUT_0_7	0x01
43#define AIO_IIRO_16_IRQ		0x02
44#define AIO_IIRO_16_RELAY_8_15	0x04
45#define AIO_IIRO_16_INPUT_8_15	0x05
46
47typedef struct aio_iiro_16_board_struct {
48	const char *name;
49	int do_;
50	int di;
51} aio_iiro_16_board;
52
53static const aio_iiro_16_board aio_iiro_16_boards[] = {
54	{
55	      name:	"aio_iiro_16",
56	      di:	16,
57      do_:	16},
58};
59
60#define	thisboard	((const aio_iiro_16_board *) dev->board_ptr)
61
62typedef struct {
63	int data;
64	struct pci_dev *pci_dev;
65	unsigned int ao_readback[2];
66} aio_iiro_16_private;
67
68#define	devpriv	((aio_iiro_16_private *) dev->private)
69
70static int aio_iiro_16_attach(comedi_device * dev, comedi_devconfig * it);
71
72static int aio_iiro_16_detach(comedi_device * dev);
73
74static comedi_driver driver_aio_iiro_16 = {
75      driver_name:"aio_iiro_16",
76      module:THIS_MODULE,
77      attach:aio_iiro_16_attach,
78      detach:aio_iiro_16_detach,
79      board_name:&aio_iiro_16_boards[0].name,
80      offset:sizeof(aio_iiro_16_board),
81      num_names:sizeof(aio_iiro_16_boards) / sizeof(aio_iiro_16_board),
82};
83
84static int aio_iiro_16_dio_insn_bits_read(comedi_device * dev,
85	comedi_subdevice * s, comedi_insn * insn, unsigned int * data);
86
87static int aio_iiro_16_dio_insn_bits_write(comedi_device * dev,
88	comedi_subdevice * s, comedi_insn * insn, unsigned int * data);
89
90static int aio_iiro_16_attach(comedi_device * dev, comedi_devconfig * it)
91{
92	int iobase;
93	comedi_subdevice *s;
94
95	printk("comedi%d: aio_iiro_16: ", dev->minor);
96
97	dev->board_name = thisboard->name;
98
99	iobase = it->options[0];
100
101	if (!request_region(iobase, AIO_IIRO_16_SIZE, dev->board_name)) {
102		printk("I/O port conflict");
103		return -EIO;
104	}
105
106	dev->iobase = iobase;
107
108	if (alloc_private(dev, sizeof(aio_iiro_16_private)) < 0)
109		return -ENOMEM;
110
111	if (alloc_subdevices(dev, 2) < 0)
112		return -ENOMEM;
113
114	s = dev->subdevices + 0;
115	s->type = COMEDI_SUBD_DIO;
116	s->subdev_flags = SDF_WRITABLE;
117	s->n_chan = 16;
118	s->maxdata = 1;
119	s->range_table = &range_digital;
120	s->insn_bits = aio_iiro_16_dio_insn_bits_write;
121
122	s = dev->subdevices + 1;
123	s->type = COMEDI_SUBD_DIO;
124	s->subdev_flags = SDF_READABLE;
125	s->n_chan = 16;
126	s->maxdata = 1;
127	s->range_table = &range_digital;
128	s->insn_bits = aio_iiro_16_dio_insn_bits_read;
129
130	printk("attached\n");
131
132	return 1;
133}
134
135static int aio_iiro_16_detach(comedi_device * dev)
136{
137	printk("comedi%d: aio_iiro_16: remove\n", dev->minor);
138
139	if (dev->iobase)
140		release_region(dev->iobase, AIO_IIRO_16_SIZE);
141
142	return 0;
143}
144
145static int aio_iiro_16_dio_insn_bits_write(comedi_device * dev,
146	comedi_subdevice * s, comedi_insn * insn, unsigned int * data)
147{
148	if (insn->n != 2)
149		return -EINVAL;
150
151	if (data[0]) {
152		s->state &= ~data[0];
153		s->state |= data[0] & data[1];
154		outb(s->state & 0xff, dev->iobase + AIO_IIRO_16_RELAY_0_7);
155		outb((s->state >> 8) & 0xff,
156			dev->iobase + AIO_IIRO_16_RELAY_8_15);
157	}
158
159	data[1] = s->state;
160
161	return 2;
162}
163
164static int aio_iiro_16_dio_insn_bits_read(comedi_device * dev,
165	comedi_subdevice * s, comedi_insn * insn, unsigned int * data)
166{
167	if (insn->n != 2)
168		return -EINVAL;
169
170	data[1] = 0;
171	data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_0_7);
172	data[1] |= inb(dev->iobase + AIO_IIRO_16_INPUT_8_15) << 8;
173
174	return 2;
175}
176
177COMEDI_INITCLEANUP(driver_aio_iiro_16);
178