pcl730.c revision 71b5f4f11971dea972832ad63a994c7e5b45db6b 
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, comedi_devconfig * it);
30static int pcl730_detach(struct comedi_device * dev);
31
32typedef struct {
33	const char *name;	// board name
34	unsigned int io_range;	// len of I/O space
35} boardtype;
36
37static const boardtype boardtypes[] = {
38	{"pcl730", PCL730_SIZE,},
39	{"iso730", PCL730_SIZE,},
40	{"acl7130", ACL7130_SIZE,},
41};
42
43#define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype))
44#define this_board ((const boardtype *)dev->board_ptr)
45
46static comedi_driver driver_pcl730 = {
47      driver_name:"pcl730",
48      module:THIS_MODULE,
49      attach:pcl730_attach,
50      detach:pcl730_detach,
51      board_name:&boardtypes[0].name,
52      num_names:n_boardtypes,
53      offset:sizeof(boardtype),
54};
55
56COMEDI_INITCLEANUP(driver_pcl730);
57
58static int pcl730_do_insn(struct comedi_device * dev, comedi_subdevice * s,
59	comedi_insn * insn, unsigned int * data)
60{
61	if (insn->n != 2)
62		return -EINVAL;
63
64	if (data[0]) {
65		s->state &= ~data[0];
66		s->state |= (data[0] & data[1]);
67	}
68	if (data[0] & 0x00ff)
69		outb(s->state & 0xff,
70			dev->iobase + ((unsigned long)s->private));
71	if (data[0] & 0xff00)
72		outb((s->state >> 8),
73			dev->iobase + ((unsigned long)s->private) + 1);
74
75	data[1] = s->state;
76
77	return 2;
78}
79
80static int pcl730_di_insn(struct comedi_device * dev, comedi_subdevice * s,
81	comedi_insn * insn, unsigned int * data)
82{
83	if (insn->n != 2)
84		return -EINVAL;
85
86	data[1] = inb(dev->iobase + ((unsigned long)s->private)) |
87		(inb(dev->iobase + ((unsigned long)s->private) + 1) << 8);
88
89	return 2;
90}
91
92static int pcl730_attach(struct comedi_device * dev, comedi_devconfig * it)
93{
94	comedi_subdevice *s;
95	unsigned long iobase;
96	unsigned int iorange;
97
98	iobase = it->options[0];
99	iorange = this_board->io_range;
100	printk("comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
101		this_board->name, iobase);
102	if (!request_region(iobase, iorange, "pcl730")) {
103		printk("I/O port conflict\n");
104		return -EIO;
105	}
106	dev->board_name = this_board->name;
107	dev->iobase = iobase;
108	dev->irq = 0;
109
110	if (alloc_subdevices(dev, 4) < 0)
111		return -ENOMEM;
112
113	s = dev->subdevices + 0;
114	/* Isolated do */
115	s->type = COMEDI_SUBD_DO;
116	s->subdev_flags = SDF_WRITABLE;
117	s->maxdata = 1;
118	s->n_chan = 16;
119	s->insn_bits = pcl730_do_insn;
120	s->range_table = &range_digital;
121	s->private = (void *)PCL730_IDIO_LO;
122
123	s = dev->subdevices + 1;
124	/* Isolated di */
125	s->type = COMEDI_SUBD_DI;
126	s->subdev_flags = SDF_READABLE;
127	s->maxdata = 1;
128	s->n_chan = 16;
129	s->insn_bits = pcl730_di_insn;
130	s->range_table = &range_digital;
131	s->private = (void *)PCL730_IDIO_LO;
132
133	s = dev->subdevices + 2;
134	/* TTL do */
135	s->type = COMEDI_SUBD_DO;
136	s->subdev_flags = SDF_WRITABLE;
137	s->maxdata = 1;
138	s->n_chan = 16;
139	s->insn_bits = pcl730_do_insn;
140	s->range_table = &range_digital;
141	s->private = (void *)PCL730_DIO_LO;
142
143	s = dev->subdevices + 3;
144	/* TTL di */
145	s->type = COMEDI_SUBD_DI;
146	s->subdev_flags = SDF_READABLE;
147	s->maxdata = 1;
148	s->n_chan = 16;
149	s->insn_bits = pcl730_di_insn;
150	s->range_table = &range_digital;
151	s->private = (void *)PCL730_DIO_LO;
152
153	printk("\n");
154
155	return 0;
156}
157
158static int pcl730_detach(struct comedi_device * dev)
159{
160	printk("comedi%d: pcl730: remove\n", dev->minor);
161
162	if (dev->iobase)
163		release_region(dev->iobase, this_board->io_range);
164
165	return 0;
166}
167