3 * Comedi driver for PC-LabCard PCL-711 and AdSys ACL-8112 and compatibles
4 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
5 * Janne Jalkanen <jalkanen@cs.hut.fi>
6 * Eric Bunn <ebu@cs.hut.fi>
8 * COMEDI - Linux Control and Measurement Device Interface
9 * Copyright (C) 1998 David A. Schleef <ds@schleef.org>
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
24 * Description: Advantech PCL-711 and 711b, ADLink ACL-8112
25 * Devices: (Advantech) PCL-711 [pcl711]
26 * (Advantech) PCL-711B [pcl711b]
27 * (AdLink) ACL-8112HG [acl8112hg]
28 * (AdLink) ACL-8112DG [acl8112dg]
29 * Author: David A. Schleef <ds@schleef.org>
30 * Janne Jalkanen <jalkanen@cs.hut.fi>
31 * Eric Bunn <ebu@cs.hut.fi>
33 * Status: mostly complete
35 * Configuration Options:
40 #include <linux/module.h>
41 #include <linux/delay.h>
42 #include <linux/interrupt.h>
44 #include "../comedidev.h"
46 #include "comedi_fc.h"
50 * I/O port register map
52 #define PCL711_TIMER_BASE 0x00
53 #define PCL711_AI_LSB_REG 0x04
54 #define PCL711_AI_MSB_REG 0x05
55 #define PCL711_AI_MSB_DRDY (1 << 4)
56 #define PCL711_AO_LSB_REG(x) (0x04 + ((x) * 2))
57 #define PCL711_AO_MSB_REG(x) (0x05 + ((x) * 2))
58 #define PCL711_DI_LSB_REG 0x06
59 #define PCL711_DI_MSB_REG 0x07
60 #define PCL711_INT_STAT_REG 0x08
61 #define PCL711_INT_STAT_CLR (0 << 0) /* any value will work */
62 #define PCL711_AI_GAIN_REG 0x09
63 #define PCL711_AI_GAIN(x) (((x) & 0xf) << 0)
64 #define PCL711_MUX_REG 0x0a
65 #define PCL711_MUX_CHAN(x) (((x) & 0xf) << 0)
66 #define PCL711_MUX_CS0 (1 << 4)
67 #define PCL711_MUX_CS1 (1 << 5)
68 #define PCL711_MUX_DIFF (PCL711_MUX_CS0 | PCL711_MUX_CS1)
69 #define PCL711_MODE_REG 0x0b
70 #define PCL711_MODE_DEFAULT (0 << 0)
71 #define PCL711_MODE_SOFTTRIG (1 << 0)
72 #define PCL711_MODE_EXT (2 << 0)
73 #define PCL711_MODE_EXT_IRQ (3 << 0)
74 #define PCL711_MODE_PACER (4 << 0)
75 #define PCL711_MODE_PACER_IRQ (6 << 0)
76 #define PCL711_MODE_IRQ(x) (((x) & 0x7) << 4)
77 #define PCL711_SOFTTRIG_REG 0x0c
78 #define PCL711_SOFTTRIG (0 << 0) /* any value will work */
79 #define PCL711_DO_LSB_REG 0x0d
80 #define PCL711_DO_MSB_REG 0x0e
82 static const struct comedi_lrange range_pcl711b_ai = {
92 static const struct comedi_lrange range_acl8112hg_ai = {
109 static const struct comedi_lrange range_acl8112dg_ai = {
123 struct pcl711_board {
128 const struct comedi_lrange *ai_range_type;
131 static const struct pcl711_board boardtypes[] = {
136 .ai_range_type = &range_bipolar5,
142 .ai_range_type = &range_pcl711b_ai,
148 .ai_range_type = &range_acl8112hg_ai,
154 .ai_range_type = &range_acl8112dg_ai,
158 struct pcl711_private {
160 unsigned int ao_readback[2];
161 unsigned int divisor1;
162 unsigned int divisor2;
165 static void pcl711_ai_set_mode(struct comedi_device *dev, unsigned int mode)
168 * The pcl711b board uses bits in the mode register to select the
169 * interrupt. The other boards supported by this driver all use
170 * jumpers on the board.
172 * Enables the interrupt when needed on the pcl711b board. These
173 * bits do nothing on the other boards.
175 if (mode == PCL711_MODE_EXT_IRQ || mode == PCL711_MODE_PACER_IRQ)
176 mode |= PCL711_MODE_IRQ(dev->irq);
178 outb(mode, dev->iobase + PCL711_MODE_REG);
181 static unsigned int pcl711_ai_get_sample(struct comedi_device *dev,
182 struct comedi_subdevice *s)
186 val = inb(dev->iobase + PCL711_AI_MSB_REG) << 8;
187 val |= inb(dev->iobase + PCL711_AI_LSB_REG);
189 return val & s->maxdata;
192 static irqreturn_t pcl711_interrupt(int irq, void *d)
194 struct comedi_device *dev = d;
195 struct pcl711_private *devpriv = dev->private;
196 struct comedi_subdevice *s = dev->read_subdev;
199 if (!dev->attached) {
200 comedi_error(dev, "spurious interrupt");
204 data = pcl711_ai_get_sample(dev, s);
206 outb(PCL711_INT_STAT_CLR, dev->iobase + PCL711_INT_STAT_REG);
208 /* FIXME! Nothing else sets ntrig! */
209 if (!(--devpriv->ntrig)) {
210 pcl711_ai_set_mode(dev, PCL711_MODE_SOFTTRIG);
212 s->async->events |= COMEDI_CB_EOA;
214 comedi_event(dev, s);
218 static void pcl711_set_changain(struct comedi_device *dev,
219 struct comedi_subdevice *s,
220 unsigned int chanspec)
222 unsigned int chan = CR_CHAN(chanspec);
223 unsigned int range = CR_RANGE(chanspec);
224 unsigned int aref = CR_AREF(chanspec);
225 unsigned int mux = 0;
227 outb(PCL711_AI_GAIN(range), dev->iobase + PCL711_AI_GAIN_REG);
230 /* Select the correct MPC508A chip */
231 if (aref == AREF_DIFF) {
233 mux |= PCL711_MUX_DIFF;
236 mux |= PCL711_MUX_CS0;
238 mux |= PCL711_MUX_CS1;
241 outb(mux | PCL711_MUX_CHAN(chan), dev->iobase + PCL711_MUX_REG);
244 static int pcl711_ai_wait_for_eoc(struct comedi_device *dev,
245 unsigned int timeout)
250 msb = inb(dev->iobase + PCL711_AI_MSB_REG);
251 if ((msb & PCL711_AI_MSB_DRDY) == 0)
258 static int pcl711_ai_insn_read(struct comedi_device *dev,
259 struct comedi_subdevice *s,
260 struct comedi_insn *insn,
266 pcl711_set_changain(dev, s, insn->chanspec);
268 pcl711_ai_set_mode(dev, PCL711_MODE_SOFTTRIG);
270 for (i = 0; i < insn->n; i++) {
271 outb(PCL711_SOFTTRIG, dev->iobase + PCL711_SOFTTRIG_REG);
273 ret = pcl711_ai_wait_for_eoc(dev, 100);
277 data[i] = pcl711_ai_get_sample(dev, s);
283 static int pcl711_ai_cmdtest(struct comedi_device *dev,
284 struct comedi_subdevice *s, struct comedi_cmd *cmd)
286 struct pcl711_private *devpriv = dev->private;
290 /* Step 1 : check if triggers are trivially valid */
292 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
293 err |= cfc_check_trigger_src(&cmd->scan_begin_src,
294 TRIG_TIMER | TRIG_EXT);
295 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
296 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
297 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
302 /* Step 2a : make sure trigger sources are unique */
304 err |= cfc_check_trigger_is_unique(cmd->scan_begin_src);
305 err |= cfc_check_trigger_is_unique(cmd->stop_src);
307 /* Step 2b : and mutually compatible */
312 /* Step 3: check if arguments are trivially valid */
314 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
316 if (cmd->scan_begin_src == TRIG_EXT) {
317 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
319 #define MAX_SPEED 1000
320 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
324 err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
325 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
327 if (cmd->stop_src == TRIG_NONE) {
328 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
338 if (cmd->scan_begin_src == TRIG_TIMER) {
339 tmp = cmd->scan_begin_arg;
340 i8253_cascade_ns_to_timer(500, /* 2 Mhz */
343 &cmd->scan_begin_arg,
344 cmd->flags & TRIG_ROUND_MASK);
345 if (tmp != cmd->scan_begin_arg)
355 static int pcl711_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
357 struct pcl711_private *devpriv = dev->private;
358 struct comedi_cmd *cmd = &s->async->cmd;
360 pcl711_set_changain(dev, s, cmd->chanlist[0]);
362 if (cmd->scan_begin_src == TRIG_TIMER) {
363 i8254_load(dev->iobase + PCL711_TIMER_BASE, 0,
364 1, devpriv->divisor1, I8254_MODE2 | I8254_BINARY);
365 i8254_load(dev->iobase + PCL711_TIMER_BASE, 0,
366 2, devpriv->divisor2, I8254_MODE2 | I8254_BINARY);
368 outb(PCL711_INT_STAT_CLR, dev->iobase + PCL711_INT_STAT_REG);
370 pcl711_ai_set_mode(dev, PCL711_MODE_PACER_IRQ);
372 pcl711_ai_set_mode(dev, PCL711_MODE_EXT_IRQ);
378 static void pcl711_ao_write(struct comedi_device *dev,
379 unsigned int chan, unsigned int val)
381 outb(val & 0xff, dev->iobase + PCL711_AO_LSB_REG(chan));
382 outb((val >> 8) & 0xff, dev->iobase + PCL711_AO_MSB_REG(chan));
385 static int pcl711_ao_insn_write(struct comedi_device *dev,
386 struct comedi_subdevice *s,
387 struct comedi_insn *insn,
390 struct pcl711_private *devpriv = dev->private;
391 unsigned int chan = CR_CHAN(insn->chanspec);
392 unsigned int val = devpriv->ao_readback[chan];
395 for (i = 0; i < insn->n; i++) {
397 pcl711_ao_write(dev, chan, val);
399 devpriv->ao_readback[chan] = val;
404 static int pcl711_ao_insn_read(struct comedi_device *dev,
405 struct comedi_subdevice *s,
406 struct comedi_insn *insn,
409 struct pcl711_private *devpriv = dev->private;
410 unsigned int chan = CR_CHAN(insn->chanspec);
413 for (i = 0; i < insn->n; i++)
414 data[i] = devpriv->ao_readback[chan];
419 static int pcl711_di_insn_bits(struct comedi_device *dev,
420 struct comedi_subdevice *s,
421 struct comedi_insn *insn,
426 val = inb(dev->iobase + PCL711_DI_LSB_REG);
427 val |= (inb(dev->iobase + PCL711_DI_MSB_REG) << 8);
434 static int pcl711_do_insn_bits(struct comedi_device *dev,
435 struct comedi_subdevice *s,
436 struct comedi_insn *insn,
441 mask = comedi_dio_update_state(s, data);
444 outb(s->state & 0xff, dev->iobase + PCL711_DO_LSB_REG);
446 outb((s->state >> 8), dev->iobase + PCL711_DO_MSB_REG);
454 static int pcl711_attach(struct comedi_device *dev, struct comedi_devconfig *it)
456 const struct pcl711_board *board = comedi_board(dev);
457 struct pcl711_private *devpriv;
458 struct comedi_subdevice *s;
461 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
465 ret = comedi_request_region(dev, it->options[0], 0x10);
469 if (it->options[1] && it->options[1] <= board->maxirq) {
470 ret = request_irq(it->options[1], pcl711_interrupt, 0,
471 dev->board_name, dev);
473 dev->irq = it->options[1];
476 ret = comedi_alloc_subdevices(dev, 4);
480 /* Analog Input subdevice */
481 s = &dev->subdevices[0];
482 s->type = COMEDI_SUBD_AI;
483 s->subdev_flags = SDF_READABLE | SDF_GROUND;
484 if (board->n_aichan > 8)
485 s->subdev_flags |= SDF_DIFF;
486 s->n_chan = board->n_aichan;
488 s->range_table = board->ai_range_type;
489 s->insn_read = pcl711_ai_insn_read;
491 dev->read_subdev = s;
492 s->subdev_flags |= SDF_CMD_READ;
494 s->do_cmdtest = pcl711_ai_cmdtest;
495 s->do_cmd = pcl711_ai_cmd;
498 /* Analog Output subdevice */
499 s = &dev->subdevices[1];
500 s->type = COMEDI_SUBD_AO;
501 s->subdev_flags = SDF_WRITABLE;
502 s->n_chan = board->n_aochan;
504 s->range_table = &range_bipolar5;
505 s->insn_write = pcl711_ao_insn_write;
506 s->insn_read = pcl711_ao_insn_read;
508 /* Digital Input subdevice */
509 s = &dev->subdevices[2];
510 s->type = COMEDI_SUBD_DI;
511 s->subdev_flags = SDF_READABLE;
514 s->range_table = &range_digital;
515 s->insn_bits = pcl711_di_insn_bits;
517 /* Digital Output subdevice */
518 s = &dev->subdevices[3];
519 s->type = COMEDI_SUBD_DO;
520 s->subdev_flags = SDF_WRITABLE;
523 s->range_table = &range_digital;
524 s->insn_bits = pcl711_do_insn_bits;
527 pcl711_ao_write(dev, 0, 0x0);
528 pcl711_ao_write(dev, 1, 0x0);
533 static struct comedi_driver pcl711_driver = {
534 .driver_name = "pcl711",
535 .module = THIS_MODULE,
536 .attach = pcl711_attach,
537 .detach = comedi_legacy_detach,
538 .board_name = &boardtypes[0].name,
539 .num_names = ARRAY_SIZE(boardtypes),
540 .offset = sizeof(struct pcl711_board),
542 module_comedi_driver(pcl711_driver);
544 MODULE_AUTHOR("Comedi http://www.comedi.org");
545 MODULE_DESCRIPTION("Comedi low-level driver");
546 MODULE_LICENSE("GPL");