2 comedi/drivers/pcl726.c
4 hardware driver for Advantech cards:
5 card: PCL-726, PCL-727, PCL-728
6 driver: pcl726, pcl727, pcl728
8 card: ACL-6126, ACL-6128
9 driver: acl6126, acl6128
11 COMEDI - Linux Control and Measurement Device Interface
12 Copyright (C) 1998 David A. Schleef <ds@schleef.org>
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
26 Description: Advantech PCL-726 & compatibles
29 Devices: [Advantech] PCL-726 (pcl726), PCL-727 (pcl727), PCL-728 (pcl728),
30 [ADLink] ACL-6126 (acl6126), ACL-6128 (acl6128)
32 Interrupts are not supported.
36 [2]...[7] - D/A output range for channel 1-6:
37 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
38 4: 4-20mA, 5: unknown (external reference)
42 [2]...[13] - D/A output range for channel 1-12:
43 0: 0-5V, 1: 0-10V, 2: +/-5V,
46 Options for PCL-728 and ACL-6128:
48 [2], [3] - D/A output range for channel 1 and 2:
49 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
54 [1] - IRQ (0=disable, 3, 5, 6, 7, 9, 10, 11, 12, 15) (currently ignored)
55 [2]...[7] - D/A output range for channel 1-6:
56 0: 0-5V, 1: 0-10V, 2: +/-5V, 3: +/-10V,
61 Thanks to Circuit Specialists for having programming info (!) on
62 their web page. (http://www.cir.com/)
65 #include <linux/module.h>
66 #include <linux/interrupt.h>
68 #include "../comedidev.h"
70 #include "comedi_fc.h"
72 #define PCL726_AO_MSB_REG(x) (0x00 + ((x) * 2))
73 #define PCL726_AO_LSB_REG(x) (0x01 + ((x) * 2))
74 #define PCL726_DO_MSB_REG 0x0c
75 #define PCL726_DO_LSB_REG 0x0d
76 #define PCL726_DI_MSB_REG 0x0e
77 #define PCL726_DI_LSB_REG 0x0f
79 #define PCL727_DI_MSB_REG 0x00
80 #define PCL727_DI_LSB_REG 0x01
81 #define PCL727_DO_MSB_REG 0x18
82 #define PCL727_DO_LSB_REG 0x19
84 static const struct comedi_lrange *const rangelist_726[] = {
93 static const struct comedi_lrange *const rangelist_727[] = {
100 static const struct comedi_lrange *const rangelist_728[] = {
109 struct pcl726_board {
111 unsigned long io_len;
112 unsigned int irq_mask;
113 const struct comedi_lrange *const *ao_ranges;
116 unsigned int have_dio:1;
117 unsigned int is_pcl727:1;
120 static const struct pcl726_board boardtypes[] = {
124 .ao_ranges = &rangelist_726[0],
125 .ao_num_ranges = ARRAY_SIZE(rangelist_726),
131 .ao_ranges = &rangelist_727[0],
132 .ao_num_ranges = ARRAY_SIZE(rangelist_727),
139 .ao_num_ranges = ARRAY_SIZE(rangelist_728),
140 .ao_ranges = &rangelist_728[0],
146 .ao_num_ranges = ARRAY_SIZE(rangelist_726),
147 .ao_ranges = &rangelist_726[0],
153 .ao_num_ranges = ARRAY_SIZE(rangelist_728),
154 .ao_ranges = &rangelist_728[0],
159 struct pcl726_private {
160 const struct comedi_lrange *rangelist[12];
161 unsigned int ao_readback[12];
162 unsigned int cmd_running:1;
165 static int pcl818_intr_insn_bits(struct comedi_device *dev,
166 struct comedi_subdevice *s,
167 struct comedi_insn *insn,
174 static int pcl818_intr_cmdtest(struct comedi_device *dev,
175 struct comedi_subdevice *s,
176 struct comedi_cmd *cmd)
180 /* Step 1 : check if triggers are trivially valid */
182 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
183 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_EXT);
184 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_FOLLOW);
185 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
186 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_NONE);
191 /* Step 2a : make sure trigger sources are unique */
192 /* Step 2b : and mutually compatible */
197 /* Step 3: check if arguments are trivially valid */
199 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
200 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
201 err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
202 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, 1);
203 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
208 /* step 4: ignored */
216 static int pcl818_intr_cmd(struct comedi_device *dev,
217 struct comedi_subdevice *s)
219 struct pcl726_private *devpriv = dev->private;
221 devpriv->cmd_running = 1;
226 static int pcl818_intr_cancel(struct comedi_device *dev,
227 struct comedi_subdevice *s)
229 struct pcl726_private *devpriv = dev->private;
231 devpriv->cmd_running = 0;
236 static irqreturn_t pcl818_interrupt(int irq, void *d)
238 struct comedi_device *dev = d;
239 struct comedi_subdevice *s = dev->read_subdev;
240 struct pcl726_private *devpriv = dev->private;
242 if (devpriv->cmd_running) {
243 pcl818_intr_cancel(dev, s);
245 comedi_buf_put(s->async, 0);
246 s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS);
247 comedi_event(dev, s);
253 static int pcl726_ao_insn_write(struct comedi_device *dev,
254 struct comedi_subdevice *s,
255 struct comedi_insn *insn,
258 struct pcl726_private *devpriv = dev->private;
259 unsigned int chan = CR_CHAN(insn->chanspec);
260 unsigned int range = CR_RANGE(insn->chanspec);
264 for (i = 0; i < insn->n; i++) {
266 devpriv->ao_readback[chan] = val;
268 /* bipolar data to the DAC is two's complement */
269 if (comedi_chan_range_is_bipolar(s, chan, range))
270 val = comedi_offset_munge(s, val);
272 /* order is important, MSB then LSB */
273 outb((val >> 8) & 0xff, dev->iobase + PCL726_AO_MSB_REG(chan));
274 outb(val & 0xff, dev->iobase + PCL726_AO_LSB_REG(chan));
280 static int pcl726_ao_insn_read(struct comedi_device *dev,
281 struct comedi_subdevice *s,
282 struct comedi_insn *insn,
285 struct pcl726_private *devpriv = dev->private;
286 unsigned int chan = CR_CHAN(insn->chanspec);
289 for (i = 0; i < insn->n; i++)
290 data[i] = devpriv->ao_readback[chan];
295 static int pcl726_di_insn_bits(struct comedi_device *dev,
296 struct comedi_subdevice *s,
297 struct comedi_insn *insn,
300 const struct pcl726_board *board = comedi_board(dev);
303 if (board->is_pcl727) {
304 val = inb(dev->iobase + PCL727_DI_LSB_REG);
305 val |= (inb(dev->iobase + PCL727_DI_MSB_REG) << 8);
307 val = inb(dev->iobase + PCL726_DI_LSB_REG);
308 val |= (inb(dev->iobase + PCL726_DI_MSB_REG) << 8);
316 static int pcl726_do_insn_bits(struct comedi_device *dev,
317 struct comedi_subdevice *s,
318 struct comedi_insn *insn,
321 const struct pcl726_board *board = comedi_board(dev);
322 unsigned long io = dev->iobase;
325 mask = comedi_dio_update_state(s, data);
327 if (board->is_pcl727) {
329 outb(s->state & 0xff, io + PCL727_DO_LSB_REG);
331 outb((s->state >> 8), io + PCL727_DO_MSB_REG);
334 outb(s->state & 0xff, io + PCL726_DO_LSB_REG);
336 outb((s->state >> 8), io + PCL726_DO_MSB_REG);
345 static int pcl726_attach(struct comedi_device *dev,
346 struct comedi_devconfig *it)
348 const struct pcl726_board *board = comedi_board(dev);
349 struct pcl726_private *devpriv;
350 struct comedi_subdevice *s;
355 ret = comedi_request_region(dev, it->options[0], board->io_len);
359 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
364 * Hook up the external trigger source interrupt only if the
365 * user config option is valid and the board supports interrupts.
367 if (it->options[1] && (board->irq_mask & (1 << it->options[1]))) {
368 ret = request_irq(it->options[1], pcl818_interrupt, 0,
369 dev->board_name, dev);
371 /* External trigger source is from Pin-17 of CN3 */
372 dev->irq = it->options[1];
376 /* setup the per-channel analog output range_table_list */
377 for (i = 0; i < 12; i++) {
378 unsigned int opt = it->options[2 + i];
380 if (opt < board->ao_num_ranges && i < board->ao_nchan)
381 devpriv->rangelist[i] = board->ao_ranges[opt];
383 devpriv->rangelist[i] = &range_unknown;
386 subdev = board->have_dio ? 3 : 1;
389 ret = comedi_alloc_subdevices(dev, subdev);
395 /* Analog Output subdevice */
396 s = &dev->subdevices[subdev++];
397 s->type = COMEDI_SUBD_AO;
398 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
399 s->n_chan = board->ao_nchan;
401 s->range_table_list = devpriv->rangelist;
402 s->insn_write = pcl726_ao_insn_write;
403 s->insn_read = pcl726_ao_insn_read;
405 if (board->have_dio) {
406 /* Digital Input subdevice */
407 s = &dev->subdevices[subdev++];
408 s->type = COMEDI_SUBD_DI;
409 s->subdev_flags = SDF_READABLE;
412 s->insn_bits = pcl726_di_insn_bits;
413 s->range_table = &range_digital;
415 /* Digital Output subdevice */
416 s = &dev->subdevices[subdev++];
417 s->type = COMEDI_SUBD_DO;
418 s->subdev_flags = SDF_WRITABLE;
421 s->insn_bits = pcl726_do_insn_bits;
422 s->range_table = &range_digital;
426 /* Digial Input subdevice - Interrupt support */
427 s = &dev->subdevices[subdev++];
428 dev->read_subdev = s;
429 s->type = COMEDI_SUBD_DI;
430 s->subdev_flags = SDF_READABLE | SDF_CMD_READ;
433 s->range_table = &range_digital;
434 s->insn_bits = pcl818_intr_insn_bits;
435 s->do_cmdtest = pcl818_intr_cmdtest;
436 s->do_cmd = pcl818_intr_cmd;
437 s->cancel = pcl818_intr_cancel;
443 static struct comedi_driver pcl726_driver = {
444 .driver_name = "pcl726",
445 .module = THIS_MODULE,
446 .attach = pcl726_attach,
447 .detach = comedi_legacy_detach,
448 .board_name = &boardtypes[0].name,
449 .num_names = ARRAY_SIZE(boardtypes),
450 .offset = sizeof(struct pcl726_board),
452 module_comedi_driver(pcl726_driver);
454 MODULE_AUTHOR("Comedi http://www.comedi.org");
455 MODULE_DESCRIPTION("Comedi low-level driver");
456 MODULE_LICENSE("GPL");