Commit | Line | Data |
---|---|---|
456af201 DS |
1 | /* |
2 | comedi/drivers/pcl711.c | |
3 | hardware driver for PC-LabCard PCL-711 and AdSys ACL-8112 | |
4 | and compatibles | |
5 | ||
6 | COMEDI - Linux Control and Measurement Device Interface | |
7 | Copyright (C) 1998 David A. Schleef <ds@schleef.org> | |
8 | Janne Jalkanen <jalkanen@cs.hut.fi> | |
9 | Eric Bunn <ebu@cs.hut.fi> | |
10 | ||
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. | |
15 | ||
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. | |
20 | ||
21 | You should have received a copy of the GNU General Public License | |
22 | along with this program; if not, write to the Free Software | |
23 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
24 | ||
25 | */ | |
26 | /* | |
27 | Driver: pcl711 | |
28 | Description: Advantech PCL-711 and 711b, ADLink ACL-8112 | |
29 | Author: ds, Janne Jalkanen <jalkanen@cs.hut.fi>, Eric Bunn <ebu@cs.hut.fi> | |
30 | Status: mostly complete | |
31 | Devices: [Advantech] PCL-711 (pcl711), PCL-711B (pcl711b), | |
32 | [AdLink] ACL-8112HG (acl8112hg), ACL-8112DG (acl8112dg) | |
33 | ||
34 | Since these boards do not have DMA or FIFOs, only immediate mode is | |
35 | supported. | |
36 | ||
37 | */ | |
38 | ||
39 | /* | |
40 | Dave Andruczyk <dave@tech.buffalostate.edu> also wrote a | |
41 | driver for the PCL-711. I used a few ideas from his driver | |
42 | here. His driver also has more comments, if you are | |
43 | interested in understanding how this driver works. | |
44 | http://tech.buffalostate.edu/~dave/driver/ | |
45 | ||
46 | The ACL-8112 driver was hacked from the sources of the PCL-711 | |
47 | driver (the 744 chip used on the 8112 is almost the same as | |
48 | the 711b chip, but it has more I/O channels) by | |
49 | Janne Jalkanen (jalkanen@cs.hut.fi) and | |
50 | Erik Bunn (ebu@cs.hut.fi). Remerged with the PCL-711 driver | |
51 | by ds. | |
52 | ||
53 | [acl-8112] | |
54 | This driver supports both TRIGNOW and TRIGCLK, | |
55 | but does not yet support DMA transfers. It also supports | |
56 | both high (HG) and low (DG) versions of the card, though | |
57 | the HG version has been untested. | |
58 | ||
59 | */ | |
60 | ||
61 | #include "../comedidev.h" | |
62 | ||
63 | #include <linux/ioport.h> | |
64 | #include <linux/delay.h> | |
65 | ||
66 | #include "8253.h" | |
67 | ||
68 | #define PCL711_SIZE 16 | |
69 | ||
70 | #define PCL711_CTR0 0 | |
71 | #define PCL711_CTR1 1 | |
72 | #define PCL711_CTR2 2 | |
73 | #define PCL711_CTRCTL 3 | |
74 | #define PCL711_AD_LO 4 | |
75 | #define PCL711_DA0_LO 4 | |
76 | #define PCL711_AD_HI 5 | |
77 | #define PCL711_DA0_HI 5 | |
78 | #define PCL711_DI_LO 6 | |
79 | #define PCL711_DA1_LO 6 | |
80 | #define PCL711_DI_HI 7 | |
81 | #define PCL711_DA1_HI 7 | |
82 | #define PCL711_CLRINTR 8 | |
83 | #define PCL711_GAIN 9 | |
84 | #define PCL711_MUX 10 | |
85 | #define PCL711_MODE 11 | |
86 | #define PCL711_SOFTTRIG 12 | |
87 | #define PCL711_DO_LO 13 | |
88 | #define PCL711_DO_HI 14 | |
89 | ||
90 | static const comedi_lrange range_pcl711b_ai = { 5, { | |
91 | BIP_RANGE(5), | |
92 | BIP_RANGE(2.5), | |
93 | BIP_RANGE(1.25), | |
94 | BIP_RANGE(0.625), | |
95 | BIP_RANGE(0.3125) | |
96 | } | |
97 | }; | |
98 | static const comedi_lrange range_acl8112hg_ai = { 12, { | |
99 | BIP_RANGE(5), | |
100 | BIP_RANGE(0.5), | |
101 | BIP_RANGE(0.05), | |
102 | BIP_RANGE(0.005), | |
103 | UNI_RANGE(10), | |
104 | UNI_RANGE(1), | |
105 | UNI_RANGE(0.1), | |
106 | UNI_RANGE(0.01), | |
107 | BIP_RANGE(10), | |
108 | BIP_RANGE(1), | |
109 | BIP_RANGE(0.1), | |
110 | BIP_RANGE(0.01) | |
111 | } | |
112 | }; | |
113 | static const comedi_lrange range_acl8112dg_ai = { 9, { | |
114 | BIP_RANGE(5), | |
115 | BIP_RANGE(2.5), | |
116 | BIP_RANGE(1.25), | |
117 | BIP_RANGE(0.625), | |
118 | UNI_RANGE(10), | |
119 | UNI_RANGE(5), | |
120 | UNI_RANGE(2.5), | |
121 | UNI_RANGE(1.25), | |
122 | BIP_RANGE(10) | |
123 | } | |
124 | }; | |
125 | ||
126 | /* | |
127 | * flags | |
128 | */ | |
129 | ||
130 | #define PCL711_TIMEOUT 100 | |
131 | #define PCL711_DRDY 0x10 | |
132 | ||
133 | static const int i8253_osc_base = 500; /* 2 Mhz */ | |
134 | ||
135 | typedef struct { | |
136 | const char *name; | |
137 | int is_pcl711b; | |
138 | int is_8112; | |
139 | int is_dg; | |
140 | int n_ranges; | |
141 | int n_aichan; | |
142 | int n_aochan; | |
143 | int maxirq; | |
144 | const comedi_lrange *ai_range_type; | |
145 | } boardtype; | |
146 | ||
147 | static const boardtype boardtypes[] = { | |
148 | {"pcl711", 0, 0, 0, 5, 8, 1, 0, &range_bipolar5}, | |
149 | {"pcl711b", 1, 0, 0, 5, 8, 1, 7, &range_pcl711b_ai}, | |
150 | {"acl8112hg", 0, 1, 0, 12, 16, 2, 15, &range_acl8112hg_ai}, | |
151 | {"acl8112dg", 0, 1, 1, 9, 16, 2, 15, &range_acl8112dg_ai}, | |
152 | }; | |
153 | ||
154 | #define n_boardtypes (sizeof(boardtypes)/sizeof(boardtype)) | |
155 | #define this_board ((const boardtype *)dev->board_ptr) | |
156 | ||
157 | static int pcl711_attach(comedi_device * dev, comedi_devconfig * it); | |
158 | static int pcl711_detach(comedi_device * dev); | |
159 | static comedi_driver driver_pcl711 = { | |
160 | driver_name:"pcl711", | |
161 | module:THIS_MODULE, | |
162 | attach:pcl711_attach, | |
163 | detach:pcl711_detach, | |
164 | board_name:&boardtypes[0].name, | |
165 | num_names:n_boardtypes, | |
166 | offset:sizeof(boardtype), | |
167 | }; | |
168 | ||
169 | COMEDI_INITCLEANUP(driver_pcl711); | |
170 | ||
171 | typedef struct { | |
172 | int board; | |
173 | int adchan; | |
174 | int ntrig; | |
175 | int aip[8]; | |
176 | int mode; | |
177 | lsampl_t ao_readback[2]; | |
178 | unsigned int divisor1; | |
179 | unsigned int divisor2; | |
180 | } pcl711_private; | |
181 | ||
182 | #define devpriv ((pcl711_private *)dev->private) | |
183 | ||
184 | static irqreturn_t pcl711_interrupt(int irq, void *d PT_REGS_ARG) | |
185 | { | |
186 | int lo, hi; | |
187 | int data; | |
188 | comedi_device *dev = d; | |
189 | comedi_subdevice *s = dev->subdevices + 0; | |
190 | ||
191 | if (!dev->attached) { | |
192 | comedi_error(dev, "spurious interrupt"); | |
193 | return IRQ_HANDLED; | |
194 | } | |
195 | ||
196 | hi = inb(dev->iobase + PCL711_AD_HI); | |
197 | lo = inb(dev->iobase + PCL711_AD_LO); | |
198 | outb(0, dev->iobase + PCL711_CLRINTR); | |
199 | ||
200 | data = (hi << 8) | lo; | |
201 | ||
202 | /* FIXME! Nothing else sets ntrig! */ | |
203 | if (!(--devpriv->ntrig)) { | |
204 | if (this_board->is_8112) { | |
205 | outb(1, dev->iobase + PCL711_MODE); | |
206 | } else { | |
207 | outb(0, dev->iobase + PCL711_MODE); | |
208 | } | |
209 | ||
210 | s->async->events |= COMEDI_CB_EOA; | |
211 | } | |
212 | comedi_event(dev, s); | |
213 | return IRQ_HANDLED; | |
214 | } | |
215 | ||
216 | static void pcl711_set_changain(comedi_device * dev, int chan) | |
217 | { | |
218 | int chan_register; | |
219 | ||
220 | outb(CR_RANGE(chan), dev->iobase + PCL711_GAIN); | |
221 | ||
222 | chan_register = CR_CHAN(chan); | |
223 | ||
224 | if (this_board->is_8112) { | |
225 | ||
226 | /* | |
227 | * Set the correct channel. The two channel banks are switched | |
228 | * using the mask value. | |
229 | * NB: To use differential channels, you should use mask = 0x30, | |
230 | * but I haven't written the support for this yet. /JJ | |
231 | */ | |
232 | ||
233 | if (chan_register >= 8) { | |
234 | chan_register = 0x20 | (chan_register & 0x7); | |
235 | } else { | |
236 | chan_register |= 0x10; | |
237 | } | |
238 | } else { | |
239 | outb(chan_register, dev->iobase + PCL711_MUX); | |
240 | } | |
241 | } | |
242 | ||
243 | static int pcl711_ai_insn(comedi_device * dev, comedi_subdevice * s, | |
244 | comedi_insn * insn, lsampl_t * data) | |
245 | { | |
246 | int i, n; | |
247 | int hi, lo; | |
248 | ||
249 | pcl711_set_changain(dev, insn->chanspec); | |
250 | ||
251 | for (n = 0; n < insn->n; n++) { | |
252 | /* | |
253 | * Write the correct mode (software polling) and start polling by writing | |
254 | * to the trigger register | |
255 | */ | |
256 | outb(1, dev->iobase + PCL711_MODE); | |
257 | ||
258 | if (this_board->is_8112) { | |
259 | } else { | |
260 | outb(0, dev->iobase + PCL711_SOFTTRIG); | |
261 | } | |
262 | ||
263 | i = PCL711_TIMEOUT; | |
264 | while (--i) { | |
265 | hi = inb(dev->iobase + PCL711_AD_HI); | |
266 | if (!(hi & PCL711_DRDY)) | |
267 | goto ok; | |
268 | comedi_udelay(1); | |
269 | } | |
270 | rt_printk("comedi%d: pcl711: A/D timeout\n", dev->minor); | |
271 | return -ETIME; | |
272 | ||
273 | ok: | |
274 | lo = inb(dev->iobase + PCL711_AD_LO); | |
275 | ||
276 | data[n] = ((hi & 0xf) << 8) | lo; | |
277 | } | |
278 | ||
279 | return n; | |
280 | } | |
281 | ||
282 | static int pcl711_ai_cmdtest(comedi_device * dev, comedi_subdevice * s, | |
283 | comedi_cmd * cmd) | |
284 | { | |
285 | int tmp; | |
286 | int err = 0; | |
287 | ||
288 | /* step 1 */ | |
289 | tmp = cmd->start_src; | |
290 | cmd->start_src &= TRIG_NOW; | |
291 | if (!cmd->start_src || tmp != cmd->start_src) | |
292 | err++; | |
293 | ||
294 | tmp = cmd->scan_begin_src; | |
295 | cmd->scan_begin_src &= TRIG_TIMER | TRIG_EXT; | |
296 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
297 | err++; | |
298 | ||
299 | tmp = cmd->convert_src; | |
300 | cmd->convert_src &= TRIG_NOW; | |
301 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
302 | err++; | |
303 | ||
304 | tmp = cmd->scan_end_src; | |
305 | cmd->scan_end_src &= TRIG_COUNT; | |
306 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
307 | err++; | |
308 | ||
309 | tmp = cmd->stop_src; | |
310 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
311 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
312 | err++; | |
313 | ||
314 | if (err) | |
315 | return 1; | |
316 | ||
317 | /* step 2 */ | |
318 | ||
319 | if (cmd->scan_begin_src != TRIG_TIMER && | |
320 | cmd->scan_begin_src != TRIG_EXT) | |
321 | err++; | |
322 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
323 | err++; | |
324 | ||
325 | if (err) | |
326 | return 2; | |
327 | ||
328 | /* step 3 */ | |
329 | ||
330 | if (cmd->start_arg != 0) { | |
331 | cmd->start_arg = 0; | |
332 | err++; | |
333 | } | |
334 | if (cmd->scan_begin_src == TRIG_EXT) { | |
335 | if (cmd->scan_begin_arg != 0) { | |
336 | cmd->scan_begin_arg = 0; | |
337 | err++; | |
338 | } | |
339 | } else { | |
340 | #define MAX_SPEED 1000 | |
341 | #define TIMER_BASE 100 | |
342 | if (cmd->scan_begin_arg < MAX_SPEED) { | |
343 | cmd->scan_begin_arg = MAX_SPEED; | |
344 | err++; | |
345 | } | |
346 | } | |
347 | if (cmd->convert_arg != 0) { | |
348 | cmd->convert_arg = 0; | |
349 | err++; | |
350 | } | |
351 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
352 | cmd->scan_end_arg = cmd->chanlist_len; | |
353 | err++; | |
354 | } | |
355 | if (cmd->stop_src == TRIG_NONE) { | |
356 | if (cmd->stop_arg != 0) { | |
357 | cmd->stop_arg = 0; | |
358 | err++; | |
359 | } | |
360 | } else { | |
361 | /* ignore */ | |
362 | } | |
363 | ||
364 | if (err) | |
365 | return 3; | |
366 | ||
367 | /* step 4 */ | |
368 | ||
369 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
370 | tmp = cmd->scan_begin_arg; | |
371 | i8253_cascade_ns_to_timer_2div(TIMER_BASE, | |
372 | &devpriv->divisor1, &devpriv->divisor2, | |
373 | &cmd->scan_begin_arg, cmd->flags & TRIG_ROUND_MASK); | |
374 | if (tmp != cmd->scan_begin_arg) | |
375 | err++; | |
376 | } | |
377 | ||
378 | if (err) | |
379 | return 4; | |
380 | ||
381 | return 0; | |
382 | } | |
383 | ||
384 | static int pcl711_ai_cmd(comedi_device * dev, comedi_subdevice * s) | |
385 | { | |
386 | int timer1, timer2; | |
387 | comedi_cmd *cmd = &s->async->cmd; | |
388 | ||
389 | pcl711_set_changain(dev, cmd->chanlist[0]); | |
390 | ||
391 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
392 | /* | |
393 | * Set timers | |
394 | * timer chip is an 8253, with timers 1 and 2 | |
395 | * cascaded | |
396 | * 0x74 = Select Counter 1 | LSB/MSB | Mode=2 | Binary | |
397 | * Mode 2 = Rate generator | |
398 | * | |
399 | * 0xb4 = Select Counter 2 | LSB/MSB | Mode=2 | Binary | |
400 | */ | |
401 | ||
402 | i8253_cascade_ns_to_timer(i8253_osc_base, &timer1, &timer2, | |
403 | &cmd->scan_begin_arg, TRIG_ROUND_NEAREST); | |
404 | ||
405 | outb(0x74, dev->iobase + PCL711_CTRCTL); | |
406 | outb(timer1 & 0xff, dev->iobase + PCL711_CTR1); | |
407 | outb((timer1 >> 8) & 0xff, dev->iobase + PCL711_CTR1); | |
408 | outb(0xb4, dev->iobase + PCL711_CTRCTL); | |
409 | outb(timer2 & 0xff, dev->iobase + PCL711_CTR2); | |
410 | outb((timer2 >> 8) & 0xff, dev->iobase + PCL711_CTR2); | |
411 | ||
412 | /* clear pending interrupts (just in case) */ | |
413 | outb(0, dev->iobase + PCL711_CLRINTR); | |
414 | ||
415 | /* | |
416 | * Set mode to IRQ transfer | |
417 | */ | |
418 | outb(devpriv->mode | 6, dev->iobase + PCL711_MODE); | |
419 | } else { | |
420 | /* external trigger */ | |
421 | outb(devpriv->mode | 3, dev->iobase + PCL711_MODE); | |
422 | } | |
423 | ||
424 | return 0; | |
425 | } | |
426 | ||
427 | /* | |
428 | analog output | |
429 | */ | |
430 | static int pcl711_ao_insn(comedi_device * dev, comedi_subdevice * s, | |
431 | comedi_insn * insn, lsampl_t * data) | |
432 | { | |
433 | int n; | |
434 | int chan = CR_CHAN(insn->chanspec); | |
435 | ||
436 | for (n = 0; n < insn->n; n++) { | |
437 | outb((data[n] & 0xff), | |
438 | dev->iobase + (chan ? PCL711_DA1_LO : PCL711_DA0_LO)); | |
439 | outb((data[n] >> 8), | |
440 | dev->iobase + (chan ? PCL711_DA1_HI : PCL711_DA0_HI)); | |
441 | ||
442 | devpriv->ao_readback[chan] = data[n]; | |
443 | } | |
444 | ||
445 | return n; | |
446 | } | |
447 | ||
448 | static int pcl711_ao_insn_read(comedi_device * dev, comedi_subdevice * s, | |
449 | comedi_insn * insn, lsampl_t * data) | |
450 | { | |
451 | int n; | |
452 | int chan = CR_CHAN(insn->chanspec); | |
453 | ||
454 | for (n = 0; n < insn->n; n++) { | |
455 | data[n] = devpriv->ao_readback[chan]; | |
456 | } | |
457 | ||
458 | return n; | |
459 | ||
460 | } | |
461 | ||
462 | /* Digital port read - Untested on 8112 */ | |
463 | static int pcl711_di_insn_bits(comedi_device * dev, comedi_subdevice * s, | |
464 | comedi_insn * insn, lsampl_t * data) | |
465 | { | |
466 | if (insn->n != 2) | |
467 | return -EINVAL; | |
468 | ||
469 | data[1] = inb(dev->iobase + PCL711_DI_LO) | | |
470 | (inb(dev->iobase + PCL711_DI_HI) << 8); | |
471 | ||
472 | return 2; | |
473 | } | |
474 | ||
475 | /* Digital port write - Untested on 8112 */ | |
476 | static int pcl711_do_insn_bits(comedi_device * dev, comedi_subdevice * s, | |
477 | comedi_insn * insn, lsampl_t * data) | |
478 | { | |
479 | if (insn->n != 2) | |
480 | return -EINVAL; | |
481 | ||
482 | if (data[0]) { | |
483 | s->state &= ~data[0]; | |
484 | s->state |= data[0] & data[1]; | |
485 | } | |
486 | if (data[0] & 0x00ff) | |
487 | outb(s->state & 0xff, dev->iobase + PCL711_DO_LO); | |
488 | if (data[0] & 0xff00) | |
489 | outb((s->state >> 8), dev->iobase + PCL711_DO_HI); | |
490 | ||
491 | data[1] = s->state; | |
492 | ||
493 | return 2; | |
494 | } | |
495 | ||
496 | /* Free any resources that we have claimed */ | |
497 | static int pcl711_detach(comedi_device * dev) | |
498 | { | |
499 | printk("comedi%d: pcl711: remove\n", dev->minor); | |
500 | ||
501 | if (dev->irq) | |
502 | comedi_free_irq(dev->irq, dev); | |
503 | ||
504 | if (dev->iobase) | |
505 | release_region(dev->iobase, PCL711_SIZE); | |
506 | ||
507 | return 0; | |
508 | } | |
509 | ||
510 | /* Initialization */ | |
511 | static int pcl711_attach(comedi_device * dev, comedi_devconfig * it) | |
512 | { | |
513 | int ret; | |
514 | unsigned long iobase; | |
515 | unsigned int irq; | |
516 | comedi_subdevice *s; | |
517 | ||
518 | /* claim our I/O space */ | |
519 | ||
520 | iobase = it->options[0]; | |
521 | printk("comedi%d: pcl711: 0x%04lx ", dev->minor, iobase); | |
522 | if (!request_region(iobase, PCL711_SIZE, "pcl711")) { | |
523 | printk("I/O port conflict\n"); | |
524 | return -EIO; | |
525 | } | |
526 | dev->iobase = iobase; | |
527 | ||
528 | /* there should be a sanity check here */ | |
529 | ||
530 | /* set up some name stuff */ | |
531 | dev->board_name = this_board->name; | |
532 | ||
533 | /* grab our IRQ */ | |
534 | irq = it->options[1]; | |
535 | if (irq > this_board->maxirq) { | |
536 | printk("irq out of range\n"); | |
537 | return -EINVAL; | |
538 | } | |
539 | if (irq) { | |
540 | if (comedi_request_irq(irq, pcl711_interrupt, 0, "pcl711", dev)) { | |
541 | printk("unable to allocate irq %u\n", irq); | |
542 | return -EINVAL; | |
543 | } else { | |
544 | printk("( irq = %u )\n", irq); | |
545 | } | |
546 | } | |
547 | dev->irq = irq; | |
548 | ||
549 | if ((ret = alloc_subdevices(dev, 4)) < 0) | |
550 | return ret; | |
551 | if ((ret = alloc_private(dev, sizeof(pcl711_private))) < 0) | |
552 | return ret; | |
553 | ||
554 | s = dev->subdevices + 0; | |
555 | /* AI subdevice */ | |
556 | s->type = COMEDI_SUBD_AI; | |
557 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
558 | s->n_chan = this_board->n_aichan; | |
559 | s->maxdata = 0xfff; | |
560 | s->len_chanlist = 1; | |
561 | s->range_table = this_board->ai_range_type; | |
562 | s->insn_read = pcl711_ai_insn; | |
563 | if (irq) { | |
564 | dev->read_subdev = s; | |
565 | s->subdev_flags |= SDF_CMD_READ; | |
566 | s->do_cmdtest = pcl711_ai_cmdtest; | |
567 | s->do_cmd = pcl711_ai_cmd; | |
568 | } | |
569 | ||
570 | s++; | |
571 | /* AO subdevice */ | |
572 | s->type = COMEDI_SUBD_AO; | |
573 | s->subdev_flags = SDF_WRITABLE; | |
574 | s->n_chan = this_board->n_aochan; | |
575 | s->maxdata = 0xfff; | |
576 | s->len_chanlist = 1; | |
577 | s->range_table = &range_bipolar5; | |
578 | s->insn_write = pcl711_ao_insn; | |
579 | s->insn_read = pcl711_ao_insn_read; | |
580 | ||
581 | s++; | |
582 | /* 16-bit digital input */ | |
583 | s->type = COMEDI_SUBD_DI; | |
584 | s->subdev_flags = SDF_READABLE; | |
585 | s->n_chan = 16; | |
586 | s->maxdata = 1; | |
587 | s->len_chanlist = 16; | |
588 | s->range_table = &range_digital; | |
589 | s->insn_bits = pcl711_di_insn_bits; | |
590 | ||
591 | s++; | |
592 | /* 16-bit digital out */ | |
593 | s->type = COMEDI_SUBD_DO; | |
594 | s->subdev_flags = SDF_WRITABLE; | |
595 | s->n_chan = 16; | |
596 | s->maxdata = 1; | |
597 | s->len_chanlist = 16; | |
598 | s->range_table = &range_digital; | |
599 | s->state = 0; | |
600 | s->insn_bits = pcl711_do_insn_bits; | |
601 | ||
602 | /* | |
603 | this is the "base value" for the mode register, which is | |
604 | used for the irq on the PCL711 | |
605 | */ | |
606 | if (this_board->is_pcl711b) { | |
607 | devpriv->mode = (dev->irq << 4); | |
608 | } | |
609 | ||
610 | /* clear DAC */ | |
611 | outb(0, dev->iobase + PCL711_DA0_LO); | |
612 | outb(0, dev->iobase + PCL711_DA0_HI); | |
613 | outb(0, dev->iobase + PCL711_DA1_LO); | |
614 | outb(0, dev->iobase + PCL711_DA1_HI); | |
615 | ||
616 | printk("\n"); | |
617 | ||
618 | return 0; | |
619 | } |