/drivers/staging/comedi/drivers/pcl730.c

  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
 58static int __init driver_pcl730_init_module(void)
 59{
 60	return comedi_driver_register(&driver_pcl730);
 61}
 62
 63static void __exit driver_pcl730_cleanup_module(void)
 64{
 65	comedi_driver_unregister(&driver_pcl730);
 66}
 67
 68module_init(driver_pcl730_init_module);
 69module_exit(driver_pcl730_cleanup_module);
 70
 71static int pcl730_do_insn(struct comedi_device *dev, struct comedi_subdevice *s,
 72			  struct comedi_insn *insn, unsigned int *data)
 73{
 74	if (insn->n != 2)
 75		return -EINVAL;
 76
 77	if (data[0]) {
 78		s->state &= ~data[0];
 79		s->state |= (data[0] & data[1]);
 80	}
 81	if (data[0] & 0x00ff)
 82		outb(s->state & 0xff,
 83		     dev->iobase + ((unsigned long)s->private));
 84	if (data[0] & 0xff00)
 85		outb((s->state >> 8),
 86		     dev->iobase + ((unsigned long)s->private) + 1);
 87
 88	data[1] = s->state;
 89
 90	return 2;
 91}
 92
 93static int pcl730_di_insn(struct comedi_device *dev, struct comedi_subdevice *s,
 94			  struct comedi_insn *insn, unsigned int *data)
 95{
 96	if (insn->n != 2)
 97		return -EINVAL;
 98
 99	data[1] = inb(dev->iobase + ((unsigned long)s->private)) |
100	    (inb(dev->iobase + ((unsigned long)s->private) + 1) << 8);
101
102	return 2;
103}
104
105static int pcl730_attach(struct comedi_device *dev, struct comedi_devconfig *it)
106{
107	struct comedi_subdevice *s;
108	unsigned long iobase;
109	unsigned int iorange;
110
111	iobase = it->options[0];
112	iorange = this_board->io_range;
113	printk(KERN_INFO "comedi%d: pcl730: board=%s 0x%04lx ", dev->minor,
114	       this_board->name, iobase);
115	if (!request_region(iobase, iorange, "pcl730")) {
116		printk("I/O port conflict\n");
117		return -EIO;
118	}
119	dev->board_name = this_board->name;
120	dev->iobase = iobase;
121	dev->irq = 0;
122
123	if (alloc_subdevices(dev, 4) < 0)
124		return -ENOMEM;
125
126	s = dev->subdevices + 0;
127	/* Isolated do */
128	s->type = COMEDI_SUBD_DO;
129	s->subdev_flags = SDF_WRITABLE;
130	s->maxdata = 1;
131	s->n_chan = 16;
132	s->insn_bits = pcl730_do_insn;
133	s->range_table = &range_digital;
134	s->private = (void *)PCL730_IDIO_LO;
135
136	s = dev->subdevices + 1;
137	/* Isolated di */
138	s->type = COMEDI_SUBD_DI;
139	s->subdev_flags = SDF_READABLE;
140	s->maxdata = 1;
141	s->n_chan = 16;
142	s->insn_bits = pcl730_di_insn;
143	s->range_table = &range_digital;
144	s->private = (void *)PCL730_IDIO_LO;
145
146	s = dev->subdevices + 2;
147	/* TTL do */
148	s->type = COMEDI_SUBD_DO;
149	s->subdev_flags = SDF_WRITABLE;
150	s->maxdata = 1;
151	s->n_chan = 16;
152	s->insn_bits = pcl730_do_insn;
153	s->range_table = &range_digital;
154	s->private = (void *)PCL730_DIO_LO;
155
156	s = dev->subdevices + 3;
157	/* TTL di */
158	s->type = COMEDI_SUBD_DI;
159	s->subdev_flags = SDF_READABLE;
160	s->maxdata = 1;
161	s->n_chan = 16;
162	s->insn_bits = pcl730_di_insn;
163	s->range_table = &range_digital;
164	s->private = (void *)PCL730_DIO_LO;
165
166	printk(KERN_INFO "\n");
167
168	return 0;
169}
170
171static int pcl730_detach(struct comedi_device *dev)
172{
173	printk(KERN_INFO "comedi%d: pcl730: remove\n", dev->minor);
174
175	if (dev->iobase)
176		release_region(dev->iobase, this_board->io_range);
177
178	return 0;
179}
180
181MODULE_AUTHOR("Comedi http://www.comedi.org");
182MODULE_DESCRIPTION("Comedi low-level driver");
183MODULE_LICENSE("GPL");