pcl730.c revision 90f703d30dd3e0c16ff80f35e34e511385a05ad5 
1/*
2 * comedi/drivers/pcl730.c
3 * Driver for Advantech PCL-730 and clones
4 * José Luis Sánchez
5 */
6/*
7Driver: pcl730
8Description: Advantech PCL-730 (& compatibles)
9Author: José Luis Sánchez (jsanchezv@teleline.es)
10Status: untested
11Devices: [Advantech] PCL-730 (pcl730), [ICP] ISO-730 (iso730),
12		 [Adlink] ACL-7130 (acl7130)
13
14Interrupts are not supported.
15The ACL-7130 card have an 8254 timer/counter not supported by this driver.
16*/
17
18#include "../comedidev.h"
19
20#include <linux/ioport.h>
21
22#define PCL730_SIZE		4
23#define ACL7130_SIZE	8
24#define PCL730_IDIO_LO	0	/* Isolated Digital I/O low byte (ID0-ID7) */
25#define PCL730_IDIO_HI	1	/* Isolated Digital I/O high byte (ID8-ID15) */
26#define PCL730_DIO_LO	2	/* TTL Digital I/O low byte (D0-D7) */
27#define PCL730_DIO_HI	3	/* TTL Digital I/O high byte (D8-D15) */
28
29static int pcl730_attach(struct comedi_device *dev,
30			 struct comedi_devconfig *it);
31static int pcl730_detach(struct comedi_device *dev);
32
33struct pcl730_board {
34
35	const char *name;	/*  board name */
36	unsigned int io_range;	/*  len of I/O space */
37};
38
39static const struct pcl730_board boardtypes[] = {
40	{"pcl730", PCL730_SIZE,},
41	{"iso730", PCL730_SIZE,},
42	{"acl7130", ACL7130_SIZE,},
43};
44
45#define n_boardtypes (sizeof(boardtypes)/sizeof(struct pcl730_board))
46#define this_board ((const struct pcl730_board *)dev->board_ptr)
47
48static struct comedi_driver driver_pcl730 = {
49	.driver_name = "pcl730",
50	.module = THIS_MODULE,
51	.attach = pcl730_attach,
52	.detach = pcl730_detach,
53	.board_name = &boardtypes[0].name,
54	.num_names = n_boardtypes,
55	.offset = sizeof(struct pcl730_board),
56};
57
58COMEDI_INITCLEANUP(driver_pcl730);
59
60static int pcl730_do_insn(struct comedi_device *dev, struct comedi_subdevice *s,
61			  struct comedi_insn *insn, unsigned int *data)
62{
63	if (insn->n != 2)
64		return -EINVAL;
65
66	if (data[0]) {
67		s->state &= ~data[0];
68		s->state |= (data[0] & data[1]);
69	}
70	if (data[0] & 0x00ff)
71		outb(s->state & 0xff,
72		     dev->iobase + ((unsigned long)s->private));
73	if (data[0] & 0xff00)
74		outb((s->state >> 8),
75		     dev->iobase + ((unsigned long)s->private) + 1);
76
77	data[1] = s->state;
78
79	return 2;
80}
81
82static int pcl730_di_insn(struct comedi_device *dev, struct comedi_subdevice *s,
83			  struct comedi_insn *insn, unsigned int *data)
84{
85	if (insn->n != 2)
86		return -EINVAL;
87
88	data[1] = inb(dev->iobase + ((unsigned long)s->private)) |
89	    (inb(dev->iobase + ((unsigned long)s->private) + 1) << 8);
90
91	return 2;
92}
93
94static int pcl730_attach(struct comedi_device *dev, struct comedi_devconfig *it)
95{
96	struct comedi_subdevice *s;
97	unsigned long iobase;
98	unsigned int iorange;
99
100	iobase = it->options[0];
101	iorange = this_board->io_range;
102	printk(KERN_INFO "comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
103	       this_board->name, iobase);
104	if (!request_region(iobase, iorange, "pcl730")) {
105		printk("I/O port conflict\n");
106		return -EIO;
107	}
108	dev->board_name = this_board->name;
109	dev->iobase = iobase;
110	dev->irq = 0;
111
112	if (alloc_subdevices(dev, 4) < 0)
113		return -ENOMEM;
114
115	s = dev->subdevices + 0;
116	/* Isolated do */
117	s->type = COMEDI_SUBD_DO;
118	s->subdev_flags = SDF_WRITABLE;
119	s->maxdata = 1;
120	s->n_chan = 16;
121	s->insn_bits = pcl730_do_insn;
122	s->range_table = &range_digital;
123	s->private = (void *)PCL730_IDIO_LO;
124
125	s = dev->subdevices + 1;
126	/* Isolated di */
127	s->type = COMEDI_SUBD_DI;
128	s->subdev_flags = SDF_READABLE;
129	s->maxdata = 1;
130	s->n_chan = 16;
131	s->insn_bits = pcl730_di_insn;
132	s->range_table = &range_digital;
133	s->private = (void *)PCL730_IDIO_LO;
134
135	s = dev->subdevices + 2;
136	/* TTL do */
137	s->type = COMEDI_SUBD_DO;
138	s->subdev_flags = SDF_WRITABLE;
139	s->maxdata = 1;
140	s->n_chan = 16;
141	s->insn_bits = pcl730_do_insn;
142	s->range_table = &range_digital;
143	s->private = (void *)PCL730_DIO_LO;
144
145	s = dev->subdevices + 3;
146	/* TTL di */
147	s->type = COMEDI_SUBD_DI;
148	s->subdev_flags = SDF_READABLE;
149	s->maxdata = 1;
150	s->n_chan = 16;
151	s->insn_bits = pcl730_di_insn;
152	s->range_table = &range_digital;
153	s->private = (void *)PCL730_DIO_LO;
154
155	printk(KERN_INFO "\n");
156
157	return 0;
158}
159
160static int pcl730_detach(struct comedi_device *dev)
161{
162	printk(KERN_INFO "comedi%d: pcl730: remove\n", dev->minor);
163
164	if (dev->iobase)
165		release_region(dev->iobase, this_board->io_range);
166
167	return 0;
168}
169
170MODULE_AUTHOR("Comedi http://www.comedi.org");
171MODULE_DESCRIPTION("Comedi low-level driver");
172MODULE_LICENSE("GPL");
173