2 * comedi/drivers/pcl730.c
3 * Driver for Advantech PCL-730 and clones
9 * Description: Advantech PCL-730 (& compatibles)
10 * Devices: (Advantech) PCL-730 [pcl730]
11 * (ICP) ISO-730 [iso730]
12 * (Adlink) ACL-7130 [acl7130]
13 * (Advantech) PCM-3730 [pcm3730]
14 * (Advantech) PCL-725 [pcl725]
15 * (ICP) P8R8-DIO [p16r16dio]
16 * (Adlink) ACL-7225b [acl7225b]
17 * (ICP) P16R16-DIO [p16r16dio]
18 * (Advantech) PCL-733 [pcl733]
19 * (Advantech) PCL-734 [pcl734]
20 * Author: José Luis Sánchez (jsanchezv@teleline.es)
23 * Configuration options:
26 * Interrupts are not supported.
27 * The ACL-7130 card has an 8254 timer/counter not supported by this driver.
30 #include <linux/module.h>
31 #include "../comedidev.h"
36 * The register map varies slightly depending on the board type but
37 * all registers are 8-bit.
39 * The boardinfo 'io_range' is used to allow comedi to request the
40 * proper range required by the board.
42 * The comedi_subdevice 'private' data is used to pass the register
43 * offset to the (*insn_bits) functions to read/write the correct
46 * The basic register mapping looks like this:
48 * BASE+0 Isolated outputs 0-7 (write) / inputs 0-7 (read)
49 * BASE+1 Isolated outputs 8-15 (write) / inputs 8-15 (read)
50 * BASE+2 TTL outputs 0-7 (write) / inputs 0-7 (read)
51 * BASE+3 TTL outputs 8-15 (write) / inputs 8-15 (read)
53 * The pcm3730 board does not have register BASE+1.
55 * The pcl725 and p8r8dio only have registers BASE+0 and BASE+1:
57 * BASE+0 Isolated outputs 0-7 (write) (read back on p8r8dio)
58 * BASE+1 Isolated inputs 0-7 (read)
60 * The acl7225b and p16r16dio boards have this register mapping:
62 * BASE+0 Isolated outputs 0-7 (write) (read back)
63 * BASE+1 Isolated outputs 8-15 (write) (read back)
64 * BASE+2 Isolated inputs 0-7 (read)
65 * BASE+3 Isolated inputs 8-15 (read)
67 * The pcl733 and pcl733 boards have this register mapping:
69 * BASE+0 Isolated outputs 0-7 (write) or inputs 0-7 (read)
70 * BASE+1 Isolated outputs 8-15 (write) or inputs 8-15 (read)
71 * BASE+2 Isolated outputs 16-23 (write) or inputs 16-23 (read)
72 * BASE+3 Isolated outputs 24-31 (write) or inputs 24-31 (read)
77 unsigned int io_range;
79 unsigned is_acl7225b:1;
80 unsigned has_readback:1;
81 unsigned has_ttl_io:1;
88 static const struct pcl730_board pcl730_boards[] = {
101 .n_iso_out_chan = 16,
109 .n_iso_out_chan = 16,
137 .io_range = 0x08, /* only 4 are used */
141 .n_iso_out_chan = 16,
149 .n_iso_out_chan = 16,
160 .n_iso_out_chan = 32,
164 static int pcl730_do_insn_bits(struct comedi_device *dev,
165 struct comedi_subdevice *s,
166 struct comedi_insn *insn,
169 unsigned long reg = (unsigned long)s->private;
172 mask = comedi_dio_update_state(s, data);
175 outb(s->state & 0xff, dev->iobase + reg);
176 if ((mask & 0xff00) && (s->n_chan > 8))
177 outb((s->state >> 8) & 0xff, dev->iobase + reg + 1);
178 if ((mask & 0xff0000) && (s->n_chan > 16))
179 outb((s->state >> 16) & 0xff, dev->iobase + reg + 2);
180 if ((mask & 0xff000000) && (s->n_chan > 24))
181 outb((s->state >> 24) & 0xff, dev->iobase + reg + 3);
189 static unsigned int pcl730_get_bits(struct comedi_device *dev,
190 struct comedi_subdevice *s)
192 unsigned long reg = (unsigned long)s->private;
195 val = inb(dev->iobase + reg);
197 val |= (inb(dev->iobase + reg + 1) << 8);
199 val |= (inb(dev->iobase + reg + 2) << 16);
201 val |= (inb(dev->iobase + reg + 3) << 24);
206 static int pcl730_di_insn_bits(struct comedi_device *dev,
207 struct comedi_subdevice *s,
208 struct comedi_insn *insn,
211 data[1] = pcl730_get_bits(dev, s);
216 static int pcl730_attach(struct comedi_device *dev,
217 struct comedi_devconfig *it)
219 const struct pcl730_board *board = comedi_board(dev);
220 struct comedi_subdevice *s;
224 ret = comedi_request_region(dev, it->options[0], board->io_range);
228 ret = comedi_alloc_subdevices(dev, board->n_subdevs);
234 if (board->n_iso_out_chan) {
235 /* Isolated Digital Outputs */
236 s = &dev->subdevices[subdev++];
237 s->type = COMEDI_SUBD_DO;
238 s->subdev_flags = SDF_WRITABLE;
239 s->n_chan = board->n_iso_out_chan;
241 s->range_table = &range_digital;
242 s->insn_bits = pcl730_do_insn_bits;
243 s->private = (void *)0;
245 /* get the initial state if supported */
246 if (board->has_readback)
247 s->state = pcl730_get_bits(dev, s);
250 if (board->n_iso_in_chan) {
251 /* Isolated Digital Inputs */
252 s = &dev->subdevices[subdev++];
253 s->type = COMEDI_SUBD_DI;
254 s->subdev_flags = SDF_READABLE;
255 s->n_chan = board->n_iso_in_chan;
257 s->range_table = &range_digital;
258 s->insn_bits = pcl730_di_insn_bits;
259 s->private = board->is_acl7225b ? (void *)2 :
260 board->is_pcl725 ? (void *)1 : (void *)0;
263 if (board->has_ttl_io) {
264 /* TTL Digital Outputs */
265 s = &dev->subdevices[subdev++];
266 s->type = COMEDI_SUBD_DO;
267 s->subdev_flags = SDF_WRITABLE;
268 s->n_chan = board->n_ttl_chan;
270 s->range_table = &range_digital;
271 s->insn_bits = pcl730_do_insn_bits;
272 s->private = (void *)2;
274 /* TTL Digital Inputs */
275 s = &dev->subdevices[subdev++];
276 s->type = COMEDI_SUBD_DI;
277 s->subdev_flags = SDF_READABLE;
278 s->n_chan = board->n_ttl_chan;
280 s->range_table = &range_digital;
281 s->insn_bits = pcl730_di_insn_bits;
282 s->private = (void *)2;
288 static struct comedi_driver pcl730_driver = {
289 .driver_name = "pcl730",
290 .module = THIS_MODULE,
291 .attach = pcl730_attach,
292 .detach = comedi_legacy_detach,
293 .board_name = &pcl730_boards[0].name,
294 .num_names = ARRAY_SIZE(pcl730_boards),
295 .offset = sizeof(struct pcl730_board),
297 module_comedi_driver(pcl730_driver);
299 MODULE_AUTHOR("Comedi http://www.comedi.org");
300 MODULE_DESCRIPTION("Comedi low-level driver");
301 MODULE_LICENSE("GPL");