1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * comedi/drivers/pcl812.c
4 *
5 * Author: Michal Dobes <dobes@tesnet.cz>
6 *
7 * hardware driver for Advantech cards
8 * card: PCL-812, PCL-812PG, PCL-813, PCL-813B
9 * driver: pcl812, pcl812pg, pcl813, pcl813b
10 * and for ADlink cards
11 * card: ACL-8112DG, ACL-8112HG, ACL-8112PG, ACL-8113, ACL-8216
12 * driver: acl8112dg, acl8112hg, acl8112pg, acl8113, acl8216
13 * and for ICP DAS cards
14 * card: ISO-813, A-821PGH, A-821PGL, A-821PGL-NDA, A-822PGH, A-822PGL,
15 * driver: iso813, a821pgh, a-821pgl, a-821pglnda, a822pgh, a822pgl,
16 * card: A-823PGH, A-823PGL, A-826PG
17 * driver: a823pgh, a823pgl, a826pg
18 */
19
20 /*
21 * Driver: pcl812
22 * Description: Advantech PCL-812/PG, PCL-813/B,
23 * ADLink ACL-8112DG/HG/PG, ACL-8113, ACL-8216,
24 * ICP DAS A-821PGH/PGL/PGL-NDA, A-822PGH/PGL, A-823PGH/PGL, A-826PG,
25 * ICP DAS ISO-813
26 * Author: Michal Dobes <dobes@tesnet.cz>
27 * Devices: [Advantech] PCL-812 (pcl812), PCL-812PG (pcl812pg),
28 * PCL-813 (pcl813), PCL-813B (pcl813b), [ADLink] ACL-8112DG (acl8112dg),
29 * ACL-8112HG (acl8112hg), ACL-8113 (acl-8113), ACL-8216 (acl8216),
30 * [ICP] ISO-813 (iso813), A-821PGH (a821pgh), A-821PGL (a821pgl),
31 * A-821PGL-NDA (a821pclnda), A-822PGH (a822pgh), A-822PGL (a822pgl),
32 * A-823PGH (a823pgh), A-823PGL (a823pgl), A-826PG (a826pg)
33 * Updated: Mon, 06 Aug 2007 12:03:15 +0100
34 * Status: works (I hope. My board fire up under my hands
35 * and I cann't test all features.)
36 *
37 * This driver supports insn and cmd interfaces. Some boards support only insn
38 * because their hardware don't allow more (PCL-813/B, ACL-8113, ISO-813).
39 * Data transfer over DMA is supported only when you measure only one
40 * channel, this is too hardware limitation of these boards.
41 *
42 * Options for PCL-812:
43 * [0] - IO Base
44 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
45 * [2] - DMA (0=disable, 1, 3)
46 * [3] - 0=trigger source is internal 8253 with 2MHz clock
47 * 1=trigger source is external
48 * [4] - 0=A/D input range is +/-10V
49 * 1=A/D input range is +/-5V
50 * 2=A/D input range is +/-2.5V
51 * 3=A/D input range is +/-1.25V
52 * 4=A/D input range is +/-0.625V
53 * 5=A/D input range is +/-0.3125V
54 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
55 * 1=D/A outputs 0-10V (internal reference -10V)
56 * 2=D/A outputs unknown (external reference)
57 *
58 * Options for PCL-812PG, ACL-8112PG:
59 * [0] - IO Base
60 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
61 * [2] - DMA (0=disable, 1, 3)
62 * [3] - 0=trigger source is internal 8253 with 2MHz clock
63 * 1=trigger source is external
64 * [4] - 0=A/D have max +/-5V input
65 * 1=A/D have max +/-10V input
66 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
67 * 1=D/A outputs 0-10V (internal reference -10V)
68 * 2=D/A outputs unknown (external reference)
69 *
70 * Options for ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH, ACL-8216, A-826PG:
71 * [0] - IO Base
72 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
73 * [2] - DMA (0=disable, 1, 3)
74 * [3] - 0=trigger source is internal 8253 with 2MHz clock
75 * 1=trigger source is external
76 * [4] - 0=A/D channels are S.E.
77 * 1=A/D channels are DIFF
78 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
79 * 1=D/A outputs 0-10V (internal reference -10V)
80 * 2=D/A outputs unknown (external reference)
81 *
82 * Options for A-821PGL/PGH:
83 * [0] - IO Base
84 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
85 * [2] - 0=A/D channels are S.E.
86 * 1=A/D channels are DIFF
87 * [3] - 0=D/A output 0-5V (internal reference -5V)
88 * 1=D/A output 0-10V (internal reference -10V)
89 *
90 * Options for A-821PGL-NDA:
91 * [0] - IO Base
92 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
93 * [2] - 0=A/D channels are S.E.
94 * 1=A/D channels are DIFF
95 *
96 * Options for PCL-813:
97 * [0] - IO Base
98 *
99 * Options for PCL-813B:
100 * [0] - IO Base
101 * [1] - 0= bipolar inputs
102 * 1= unipolar inputs
103 *
104 * Options for ACL-8113, ISO-813:
105 * [0] - IO Base
106 * [1] - 0= 10V bipolar inputs
107 * 1= 10V unipolar inputs
108 * 2= 20V bipolar inputs
109 * 3= 20V unipolar inputs
110 */
111
112 #include <linux/module.h>
113 #include <linux/interrupt.h>
114 #include <linux/gfp.h>
115 #include <linux/delay.h>
116 #include <linux/io.h>
117 #include <linux/comedi/comedidev.h>
118 #include <linux/comedi/comedi_8254.h>
119 #include <linux/comedi/comedi_isadma.h>
120
121 /*
122 * Register I/O map
123 */
124 #define PCL812_TIMER_BASE 0x00
125 #define PCL812_AI_LSB_REG 0x04
126 #define PCL812_AI_MSB_REG 0x05
127 #define PCL812_AI_MSB_DRDY BIT(4)
128 #define PCL812_AO_LSB_REG(x) (0x04 + ((x) * 2))
129 #define PCL812_AO_MSB_REG(x) (0x05 + ((x) * 2))
130 #define PCL812_DI_LSB_REG 0x06
131 #define PCL812_DI_MSB_REG 0x07
132 #define PCL812_STATUS_REG 0x08
133 #define PCL812_STATUS_DRDY BIT(5)
134 #define PCL812_RANGE_REG 0x09
135 #define PCL812_MUX_REG 0x0a
136 #define PCL812_MUX_CHAN(x) ((x) << 0)
137 #define PCL812_MUX_CS0 BIT(4)
138 #define PCL812_MUX_CS1 BIT(5)
139 #define PCL812_CTRL_REG 0x0b
140 #define PCL812_CTRL_TRIG(x) (((x) & 0x7) << 0)
141 #define PCL812_CTRL_DISABLE_TRIG PCL812_CTRL_TRIG(0)
142 #define PCL812_CTRL_SOFT_TRIG PCL812_CTRL_TRIG(1)
143 #define PCL812_CTRL_PACER_DMA_TRIG PCL812_CTRL_TRIG(2)
144 #define PCL812_CTRL_PACER_EOC_TRIG PCL812_CTRL_TRIG(6)
145 #define PCL812_SOFTTRIG_REG 0x0c
146 #define PCL812_DO_LSB_REG 0x0d
147 #define PCL812_DO_MSB_REG 0x0e
148
149 #define MAX_CHANLIST_LEN 256 /* length of scan list */
150
151 static const struct comedi_lrange range_pcl812pg_ai = {
152 5, {
153 BIP_RANGE(5),
154 BIP_RANGE(2.5),
155 BIP_RANGE(1.25),
156 BIP_RANGE(0.625),
157 BIP_RANGE(0.3125)
158 }
159 };
160
161 static const struct comedi_lrange range_pcl812pg2_ai = {
162 5, {
163 BIP_RANGE(10),
164 BIP_RANGE(5),
165 BIP_RANGE(2.5),
166 BIP_RANGE(1.25),
167 BIP_RANGE(0.625)
168 }
169 };
170
171 static const struct comedi_lrange range812_bipolar1_25 = {
172 1, {
173 BIP_RANGE(1.25)
174 }
175 };
176
177 static const struct comedi_lrange range812_bipolar0_625 = {
178 1, {
179 BIP_RANGE(0.625)
180 }
181 };
182
183 static const struct comedi_lrange range812_bipolar0_3125 = {
184 1, {
185 BIP_RANGE(0.3125)
186 }
187 };
188
189 static const struct comedi_lrange range_pcl813b_ai = {
190 4, {
191 BIP_RANGE(5),
192 BIP_RANGE(2.5),
193 BIP_RANGE(1.25),
194 BIP_RANGE(0.625)
195 }
196 };
197
198 static const struct comedi_lrange range_pcl813b2_ai = {
199 4, {
200 UNI_RANGE(10),
201 UNI_RANGE(5),
202 UNI_RANGE(2.5),
203 UNI_RANGE(1.25)
204 }
205 };
206
207 static const struct comedi_lrange range_iso813_1_ai = {
208 5, {
209 BIP_RANGE(5),
210 BIP_RANGE(2.5),
211 BIP_RANGE(1.25),
212 BIP_RANGE(0.625),
213 BIP_RANGE(0.3125)
214 }
215 };
216
217 static const struct comedi_lrange range_iso813_1_2_ai = {
218 5, {
219 UNI_RANGE(10),
220 UNI_RANGE(5),
221 UNI_RANGE(2.5),
222 UNI_RANGE(1.25),
223 UNI_RANGE(0.625)
224 }
225 };
226
227 static const struct comedi_lrange range_iso813_2_ai = {
228 4, {
229 BIP_RANGE(5),
230 BIP_RANGE(2.5),
231 BIP_RANGE(1.25),
232 BIP_RANGE(0.625)
233 }
234 };
235
236 static const struct comedi_lrange range_iso813_2_2_ai = {
237 4, {
238 UNI_RANGE(10),
239 UNI_RANGE(5),
240 UNI_RANGE(2.5),
241 UNI_RANGE(1.25)
242 }
243 };
244
245 static const struct comedi_lrange range_acl8113_1_ai = {
246 4, {
247 BIP_RANGE(5),
248 BIP_RANGE(2.5),
249 BIP_RANGE(1.25),
250 BIP_RANGE(0.625)
251 }
252 };
253
254 static const struct comedi_lrange range_acl8113_1_2_ai = {
255 4, {
256 UNI_RANGE(10),
257 UNI_RANGE(5),
258 UNI_RANGE(2.5),
259 UNI_RANGE(1.25)
260 }
261 };
262
263 static const struct comedi_lrange range_acl8113_2_ai = {
264 3, {
265 BIP_RANGE(5),
266 BIP_RANGE(2.5),
267 BIP_RANGE(1.25)
268 }
269 };
270
271 static const struct comedi_lrange range_acl8113_2_2_ai = {
272 3, {
273 UNI_RANGE(10),
274 UNI_RANGE(5),
275 UNI_RANGE(2.5)
276 }
277 };
278
279 static const struct comedi_lrange range_acl8112dg_ai = {
280 9, {
281 BIP_RANGE(5),
282 BIP_RANGE(2.5),
283 BIP_RANGE(1.25),
284 BIP_RANGE(0.625),
285 UNI_RANGE(10),
286 UNI_RANGE(5),
287 UNI_RANGE(2.5),
288 UNI_RANGE(1.25),
289 BIP_RANGE(10)
290 }
291 };
292
293 static const struct comedi_lrange range_acl8112hg_ai = {
294 12, {
295 BIP_RANGE(5),
296 BIP_RANGE(0.5),
297 BIP_RANGE(0.05),
298 BIP_RANGE(0.005),
299 UNI_RANGE(10),
300 UNI_RANGE(1),
301 UNI_RANGE(0.1),
302 UNI_RANGE(0.01),
303 BIP_RANGE(10),
304 BIP_RANGE(1),
305 BIP_RANGE(0.1),
306 BIP_RANGE(0.01)
307 }
308 };
309
310 static const struct comedi_lrange range_a821pgh_ai = {
311 4, {
312 BIP_RANGE(5),
313 BIP_RANGE(0.5),
314 BIP_RANGE(0.05),
315 BIP_RANGE(0.005)
316 }
317 };
318
319 enum pcl812_boardtype {
320 BOARD_PCL812PG = 0, /* and ACL-8112PG */
321 BOARD_PCL813B = 1,
322 BOARD_PCL812 = 2,
323 BOARD_PCL813 = 3,
324 BOARD_ISO813 = 5,
325 BOARD_ACL8113 = 6,
326 BOARD_ACL8112 = 7, /* ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH */
327 BOARD_ACL8216 = 8, /* and ICP DAS A-826PG */
328 BOARD_A821 = 9, /* PGH, PGL, PGL/NDA versions */
329 };
330
331 struct pcl812_board {
332 const char *name;
333 enum pcl812_boardtype board_type;
334 int n_aichan;
335 int n_aochan;
336 unsigned int ai_ns_min;
337 const struct comedi_lrange *rangelist_ai;
338 unsigned int irq_bits;
339 unsigned int has_dma:1;
340 unsigned int has_16bit_ai:1;
341 unsigned int has_mpc508_mux:1;
342 unsigned int has_dio:1;
343 };
344
345 static const struct pcl812_board boardtypes[] = {
346 {
347 .name = "pcl812",
348 .board_type = BOARD_PCL812,
349 .n_aichan = 16,
350 .n_aochan = 2,
351 .ai_ns_min = 33000,
352 .rangelist_ai = &range_bipolar10,
353 .irq_bits = 0xdcfc,
354 .has_dma = 1,
355 .has_dio = 1,
356 }, {
357 .name = "pcl812pg",
358 .board_type = BOARD_PCL812PG,
359 .n_aichan = 16,
360 .n_aochan = 2,
361 .ai_ns_min = 33000,
362 .rangelist_ai = &range_pcl812pg_ai,
363 .irq_bits = 0xdcfc,
364 .has_dma = 1,
365 .has_dio = 1,
366 }, {
367 .name = "acl8112pg",
368 .board_type = BOARD_PCL812PG,
369 .n_aichan = 16,
370 .n_aochan = 2,
371 .ai_ns_min = 10000,
372 .rangelist_ai = &range_pcl812pg_ai,
373 .irq_bits = 0xdcfc,
374 .has_dma = 1,
375 .has_dio = 1,
376 }, {
377 .name = "acl8112dg",
378 .board_type = BOARD_ACL8112,
379 .n_aichan = 16, /* 8 differential */
380 .n_aochan = 2,
381 .ai_ns_min = 10000,
382 .rangelist_ai = &range_acl8112dg_ai,
383 .irq_bits = 0xdcfc,
384 .has_dma = 1,
385 .has_mpc508_mux = 1,
386 .has_dio = 1,
387 }, {
388 .name = "acl8112hg",
389 .board_type = BOARD_ACL8112,
390 .n_aichan = 16, /* 8 differential */
391 .n_aochan = 2,
392 .ai_ns_min = 10000,
393 .rangelist_ai = &range_acl8112hg_ai,
394 .irq_bits = 0xdcfc,
395 .has_dma = 1,
396 .has_mpc508_mux = 1,
397 .has_dio = 1,
398 }, {
399 .name = "a821pgl",
400 .board_type = BOARD_A821,
401 .n_aichan = 16, /* 8 differential */
402 .n_aochan = 1,
403 .ai_ns_min = 10000,
404 .rangelist_ai = &range_pcl813b_ai,
405 .irq_bits = 0x000c,
406 .has_dio = 1,
407 }, {
408 .name = "a821pglnda",
409 .board_type = BOARD_A821,
410 .n_aichan = 16, /* 8 differential */
411 .ai_ns_min = 10000,
412 .rangelist_ai = &range_pcl813b_ai,
413 .irq_bits = 0x000c,
414 }, {
415 .name = "a821pgh",
416 .board_type = BOARD_A821,
417 .n_aichan = 16, /* 8 differential */
418 .n_aochan = 1,
419 .ai_ns_min = 10000,
420 .rangelist_ai = &range_a821pgh_ai,
421 .irq_bits = 0x000c,
422 .has_dio = 1,
423 }, {
424 .name = "a822pgl",
425 .board_type = BOARD_ACL8112,
426 .n_aichan = 16, /* 8 differential */
427 .n_aochan = 2,
428 .ai_ns_min = 10000,
429 .rangelist_ai = &range_acl8112dg_ai,
430 .irq_bits = 0xdcfc,
431 .has_dma = 1,
432 .has_dio = 1,
433 }, {
434 .name = "a822pgh",
435 .board_type = BOARD_ACL8112,
436 .n_aichan = 16, /* 8 differential */
437 .n_aochan = 2,
438 .ai_ns_min = 10000,
439 .rangelist_ai = &range_acl8112hg_ai,
440 .irq_bits = 0xdcfc,
441 .has_dma = 1,
442 .has_dio = 1,
443 }, {
444 .name = "a823pgl",
445 .board_type = BOARD_ACL8112,
446 .n_aichan = 16, /* 8 differential */
447 .n_aochan = 2,
448 .ai_ns_min = 8000,
449 .rangelist_ai = &range_acl8112dg_ai,
450 .irq_bits = 0xdcfc,
451 .has_dma = 1,
452 .has_dio = 1,
453 }, {
454 .name = "a823pgh",
455 .board_type = BOARD_ACL8112,
456 .n_aichan = 16, /* 8 differential */
457 .n_aochan = 2,
458 .ai_ns_min = 8000,
459 .rangelist_ai = &range_acl8112hg_ai,
460 .irq_bits = 0xdcfc,
461 .has_dma = 1,
462 .has_dio = 1,
463 }, {
464 .name = "pcl813",
465 .board_type = BOARD_PCL813,
466 .n_aichan = 32,
467 .rangelist_ai = &range_pcl813b_ai,
468 }, {
469 .name = "pcl813b",
470 .board_type = BOARD_PCL813B,
471 .n_aichan = 32,
472 .rangelist_ai = &range_pcl813b_ai,
473 }, {
474 .name = "acl8113",
475 .board_type = BOARD_ACL8113,
476 .n_aichan = 32,
477 .rangelist_ai = &range_acl8113_1_ai,
478 }, {
479 .name = "iso813",
480 .board_type = BOARD_ISO813,
481 .n_aichan = 32,
482 .rangelist_ai = &range_iso813_1_ai,
483 }, {
484 .name = "acl8216",
485 .board_type = BOARD_ACL8216,
486 .n_aichan = 16, /* 8 differential */
487 .n_aochan = 2,
488 .ai_ns_min = 10000,
489 .rangelist_ai = &range_pcl813b2_ai,
490 .irq_bits = 0xdcfc,
491 .has_dma = 1,
492 .has_16bit_ai = 1,
493 .has_mpc508_mux = 1,
494 .has_dio = 1,
495 }, {
496 .name = "a826pg",
497 .board_type = BOARD_ACL8216,
498 .n_aichan = 16, /* 8 differential */
499 .n_aochan = 2,
500 .ai_ns_min = 10000,
501 .rangelist_ai = &range_pcl813b2_ai,
502 .irq_bits = 0xdcfc,
503 .has_dma = 1,
504 .has_16bit_ai = 1,
505 .has_dio = 1,
506 },
507 };
508
509 struct pcl812_private {
510 struct comedi_isadma *dma;
511 unsigned char range_correction; /* =1 we must add 1 to range number */
512 unsigned int last_ai_chanspec;
513 unsigned char mode_reg_int; /* stored INT number for some cards */
514 unsigned int ai_poll_ptr; /* how many samples transfer poll */
515 unsigned int max_812_ai_mode0_rangewait; /* settling time for gain */
516 unsigned int use_diff:1;
517 unsigned int use_mpc508:1;
518 unsigned int use_ext_trg:1;
519 unsigned int ai_dma:1;
520 unsigned int ai_eos:1;
521 };
522
pcl812_ai_setup_dma(struct comedi_device * dev,struct comedi_subdevice * s,unsigned int unread_samples)523 static void pcl812_ai_setup_dma(struct comedi_device *dev,
524 struct comedi_subdevice *s,
525 unsigned int unread_samples)
526 {
527 struct pcl812_private *devpriv = dev->private;
528 struct comedi_isadma *dma = devpriv->dma;
529 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
530 unsigned int bytes;
531 unsigned int max_samples;
532 unsigned int nsamples;
533
534 comedi_isadma_disable(dma->chan);
535
536 /* if using EOS, adapt DMA buffer to one scan */
537 bytes = devpriv->ai_eos ? comedi_bytes_per_scan(s) : desc->maxsize;
538 max_samples = comedi_bytes_to_samples(s, bytes);
539
540 /*
541 * Determine dma size based on the buffer size plus the number of
542 * unread samples and the number of samples remaining in the command.
543 */
544 nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
545 if (nsamples > unread_samples) {
546 nsamples -= unread_samples;
547 desc->size = comedi_samples_to_bytes(s, nsamples);
548 comedi_isadma_program(desc);
549 }
550 }
551
pcl812_ai_set_chan_range(struct comedi_device * dev,unsigned int chanspec,char wait)552 static void pcl812_ai_set_chan_range(struct comedi_device *dev,
553 unsigned int chanspec, char wait)
554 {
555 struct pcl812_private *devpriv = dev->private;
556 unsigned int chan = CR_CHAN(chanspec);
557 unsigned int range = CR_RANGE(chanspec);
558 unsigned int mux = 0;
559
560 if (chanspec == devpriv->last_ai_chanspec)
561 return;
562
563 devpriv->last_ai_chanspec = chanspec;
564
565 if (devpriv->use_mpc508) {
566 if (devpriv->use_diff) {
567 mux |= PCL812_MUX_CS0 | PCL812_MUX_CS1;
568 } else {
569 if (chan < 8)
570 mux |= PCL812_MUX_CS0;
571 else
572 mux |= PCL812_MUX_CS1;
573 }
574 }
575
576 outb(mux | PCL812_MUX_CHAN(chan), dev->iobase + PCL812_MUX_REG);
577 outb(range + devpriv->range_correction, dev->iobase + PCL812_RANGE_REG);
578
579 if (wait)
580 /*
581 * XXX this depends on selected range and can be very long for
582 * some high gain ranges!
583 */
584 udelay(devpriv->max_812_ai_mode0_rangewait);
585 }
586
pcl812_ai_clear_eoc(struct comedi_device * dev)587 static void pcl812_ai_clear_eoc(struct comedi_device *dev)
588 {
589 /* writing any value clears the interrupt request */
590 outb(0, dev->iobase + PCL812_STATUS_REG);
591 }
592
pcl812_ai_soft_trig(struct comedi_device * dev)593 static void pcl812_ai_soft_trig(struct comedi_device *dev)
594 {
595 /* writing any value triggers a software conversion */
596 outb(255, dev->iobase + PCL812_SOFTTRIG_REG);
597 }
598
pcl812_ai_get_sample(struct comedi_device * dev,struct comedi_subdevice * s)599 static unsigned int pcl812_ai_get_sample(struct comedi_device *dev,
600 struct comedi_subdevice *s)
601 {
602 unsigned int val;
603
604 val = inb(dev->iobase + PCL812_AI_MSB_REG) << 8;
605 val |= inb(dev->iobase + PCL812_AI_LSB_REG);
606
607 return val & s->maxdata;
608 }
609
pcl812_ai_eoc(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned long context)610 static int pcl812_ai_eoc(struct comedi_device *dev,
611 struct comedi_subdevice *s,
612 struct comedi_insn *insn,
613 unsigned long context)
614 {
615 unsigned int status;
616
617 if (s->maxdata > 0x0fff) {
618 status = inb(dev->iobase + PCL812_STATUS_REG);
619 if ((status & PCL812_STATUS_DRDY) == 0)
620 return 0;
621 } else {
622 status = inb(dev->iobase + PCL812_AI_MSB_REG);
623 if ((status & PCL812_AI_MSB_DRDY) == 0)
624 return 0;
625 }
626 return -EBUSY;
627 }
628
pcl812_ai_cmdtest(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_cmd * cmd)629 static int pcl812_ai_cmdtest(struct comedi_device *dev,
630 struct comedi_subdevice *s, struct comedi_cmd *cmd)
631 {
632 const struct pcl812_board *board = dev->board_ptr;
633 struct pcl812_private *devpriv = dev->private;
634 int err = 0;
635 unsigned int flags;
636
637 /* Step 1 : check if triggers are trivially valid */
638
639 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
640 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
641
642 if (devpriv->use_ext_trg)
643 flags = TRIG_EXT;
644 else
645 flags = TRIG_TIMER;
646 err |= comedi_check_trigger_src(&cmd->convert_src, flags);
647
648 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
649 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
650
651 if (err)
652 return 1;
653
654 /* Step 2a : make sure trigger sources are unique */
655
656 err |= comedi_check_trigger_is_unique(cmd->stop_src);
657
658 /* Step 2b : and mutually compatible */
659
660 if (err)
661 return 2;
662
663 /* Step 3: check if arguments are trivially valid */
664
665 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
666 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
667
668 if (cmd->convert_src == TRIG_TIMER) {
669 err |= comedi_check_trigger_arg_min(&cmd->convert_arg,
670 board->ai_ns_min);
671 } else { /* TRIG_EXT */
672 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
673 }
674
675 err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1);
676 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
677 cmd->chanlist_len);
678
679 if (cmd->stop_src == TRIG_COUNT)
680 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
681 else /* TRIG_NONE */
682 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
683
684 if (err)
685 return 3;
686
687 /* step 4: fix up any arguments */
688
689 if (cmd->convert_src == TRIG_TIMER) {
690 unsigned int arg = cmd->convert_arg;
691
692 comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
693 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg);
694 }
695
696 if (err)
697 return 4;
698
699 return 0;
700 }
701
pcl812_ai_cmd(struct comedi_device * dev,struct comedi_subdevice * s)702 static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
703 {
704 struct pcl812_private *devpriv = dev->private;
705 struct comedi_isadma *dma = devpriv->dma;
706 struct comedi_cmd *cmd = &s->async->cmd;
707 unsigned int ctrl = 0;
708 unsigned int i;
709
710 pcl812_ai_set_chan_range(dev, cmd->chanlist[0], 1);
711
712 if (dma) { /* check if we can use DMA transfer */
713 devpriv->ai_dma = 1;
714 for (i = 1; i < cmd->chanlist_len; i++)
715 if (cmd->chanlist[0] != cmd->chanlist[i]) {
716 /* we cann't use DMA :-( */
717 devpriv->ai_dma = 0;
718 break;
719 }
720 } else {
721 devpriv->ai_dma = 0;
722 }
723
724 devpriv->ai_poll_ptr = 0;
725
726 /* don't we want wake up every scan? */
727 if (cmd->flags & CMDF_WAKE_EOS) {
728 devpriv->ai_eos = 1;
729
730 /* DMA is useless for this situation */
731 if (cmd->chanlist_len == 1)
732 devpriv->ai_dma = 0;
733 }
734
735 if (devpriv->ai_dma) {
736 /* setup and enable dma for the first buffer */
737 dma->cur_dma = 0;
738 pcl812_ai_setup_dma(dev, s, 0);
739 }
740
741 switch (cmd->convert_src) {
742 case TRIG_TIMER:
743 comedi_8254_update_divisors(dev->pacer);
744 comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
745 break;
746 }
747
748 if (devpriv->ai_dma)
749 ctrl |= PCL812_CTRL_PACER_DMA_TRIG;
750 else
751 ctrl |= PCL812_CTRL_PACER_EOC_TRIG;
752 outb(devpriv->mode_reg_int | ctrl, dev->iobase + PCL812_CTRL_REG);
753
754 return 0;
755 }
756
pcl812_ai_next_chan(struct comedi_device * dev,struct comedi_subdevice * s)757 static bool pcl812_ai_next_chan(struct comedi_device *dev,
758 struct comedi_subdevice *s)
759 {
760 struct comedi_cmd *cmd = &s->async->cmd;
761
762 if (cmd->stop_src == TRIG_COUNT &&
763 s->async->scans_done >= cmd->stop_arg) {
764 s->async->events |= COMEDI_CB_EOA;
765 return false;
766 }
767
768 return true;
769 }
770
pcl812_handle_eoc(struct comedi_device * dev,struct comedi_subdevice * s)771 static void pcl812_handle_eoc(struct comedi_device *dev,
772 struct comedi_subdevice *s)
773 {
774 struct comedi_cmd *cmd = &s->async->cmd;
775 unsigned int chan = s->async->cur_chan;
776 unsigned int next_chan;
777 unsigned short val;
778
779 if (pcl812_ai_eoc(dev, s, NULL, 0)) {
780 dev_dbg(dev->class_dev, "A/D cmd IRQ without DRDY!\n");
781 s->async->events |= COMEDI_CB_ERROR;
782 return;
783 }
784
785 val = pcl812_ai_get_sample(dev, s);
786 comedi_buf_write_samples(s, &val, 1);
787
788 /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
789 next_chan = s->async->cur_chan;
790 if (cmd->chanlist[chan] != cmd->chanlist[next_chan])
791 pcl812_ai_set_chan_range(dev, cmd->chanlist[next_chan], 0);
792
793 pcl812_ai_next_chan(dev, s);
794 }
795
transfer_from_dma_buf(struct comedi_device * dev,struct comedi_subdevice * s,unsigned short * ptr,unsigned int bufptr,unsigned int len)796 static void transfer_from_dma_buf(struct comedi_device *dev,
797 struct comedi_subdevice *s,
798 unsigned short *ptr,
799 unsigned int bufptr, unsigned int len)
800 {
801 unsigned int i;
802 unsigned short val;
803
804 for (i = len; i; i--) {
805 val = ptr[bufptr++];
806 comedi_buf_write_samples(s, &val, 1);
807
808 if (!pcl812_ai_next_chan(dev, s))
809 break;
810 }
811 }
812
pcl812_handle_dma(struct comedi_device * dev,struct comedi_subdevice * s)813 static void pcl812_handle_dma(struct comedi_device *dev,
814 struct comedi_subdevice *s)
815 {
816 struct pcl812_private *devpriv = dev->private;
817 struct comedi_isadma *dma = devpriv->dma;
818 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
819 unsigned int nsamples;
820 int bufptr;
821
822 nsamples = comedi_bytes_to_samples(s, desc->size) -
823 devpriv->ai_poll_ptr;
824 bufptr = devpriv->ai_poll_ptr;
825 devpriv->ai_poll_ptr = 0;
826
827 /* restart dma with the next buffer */
828 dma->cur_dma = 1 - dma->cur_dma;
829 pcl812_ai_setup_dma(dev, s, nsamples);
830
831 transfer_from_dma_buf(dev, s, desc->virt_addr, bufptr, nsamples);
832 }
833
pcl812_interrupt(int irq,void * d)834 static irqreturn_t pcl812_interrupt(int irq, void *d)
835 {
836 struct comedi_device *dev = d;
837 struct comedi_subdevice *s = dev->read_subdev;
838 struct pcl812_private *devpriv = dev->private;
839
840 if (!dev->attached) {
841 pcl812_ai_clear_eoc(dev);
842 return IRQ_HANDLED;
843 }
844
845 if (devpriv->ai_dma)
846 pcl812_handle_dma(dev, s);
847 else
848 pcl812_handle_eoc(dev, s);
849
850 pcl812_ai_clear_eoc(dev);
851
852 comedi_handle_events(dev, s);
853 return IRQ_HANDLED;
854 }
855
pcl812_ai_poll(struct comedi_device * dev,struct comedi_subdevice * s)856 static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
857 {
858 struct pcl812_private *devpriv = dev->private;
859 struct comedi_isadma *dma = devpriv->dma;
860 struct comedi_isadma_desc *desc;
861 unsigned long flags;
862 unsigned int poll;
863 int ret;
864
865 /* poll is valid only for DMA transfer */
866 if (!devpriv->ai_dma)
867 return 0;
868
869 spin_lock_irqsave(&dev->spinlock, flags);
870
871 poll = comedi_isadma_poll(dma);
872 poll = comedi_bytes_to_samples(s, poll);
873 if (poll > devpriv->ai_poll_ptr) {
874 desc = &dma->desc[dma->cur_dma];
875 transfer_from_dma_buf(dev, s, desc->virt_addr,
876 devpriv->ai_poll_ptr,
877 poll - devpriv->ai_poll_ptr);
878 /* new buffer position */
879 devpriv->ai_poll_ptr = poll;
880
881 ret = comedi_buf_n_bytes_ready(s);
882 } else {
883 /* no new samples */
884 ret = 0;
885 }
886
887 spin_unlock_irqrestore(&dev->spinlock, flags);
888
889 return ret;
890 }
891
pcl812_ai_cancel(struct comedi_device * dev,struct comedi_subdevice * s)892 static int pcl812_ai_cancel(struct comedi_device *dev,
893 struct comedi_subdevice *s)
894 {
895 struct pcl812_private *devpriv = dev->private;
896
897 if (devpriv->ai_dma)
898 comedi_isadma_disable(devpriv->dma->chan);
899
900 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
901 dev->iobase + PCL812_CTRL_REG);
902 comedi_8254_pacer_enable(dev->pacer, 1, 2, false);
903 pcl812_ai_clear_eoc(dev);
904 return 0;
905 }
906
pcl812_ai_insn_read(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)907 static int pcl812_ai_insn_read(struct comedi_device *dev,
908 struct comedi_subdevice *s,
909 struct comedi_insn *insn,
910 unsigned int *data)
911 {
912 struct pcl812_private *devpriv = dev->private;
913 int ret = 0;
914 int i;
915
916 outb(devpriv->mode_reg_int | PCL812_CTRL_SOFT_TRIG,
917 dev->iobase + PCL812_CTRL_REG);
918
919 pcl812_ai_set_chan_range(dev, insn->chanspec, 1);
920
921 for (i = 0; i < insn->n; i++) {
922 pcl812_ai_clear_eoc(dev);
923 pcl812_ai_soft_trig(dev);
924
925 ret = comedi_timeout(dev, s, insn, pcl812_ai_eoc, 0);
926 if (ret)
927 break;
928
929 data[i] = pcl812_ai_get_sample(dev, s);
930 }
931 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
932 dev->iobase + PCL812_CTRL_REG);
933 pcl812_ai_clear_eoc(dev);
934
935 return ret ? ret : insn->n;
936 }
937
pcl812_ao_insn_write(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)938 static int pcl812_ao_insn_write(struct comedi_device *dev,
939 struct comedi_subdevice *s,
940 struct comedi_insn *insn,
941 unsigned int *data)
942 {
943 unsigned int chan = CR_CHAN(insn->chanspec);
944 unsigned int val = s->readback[chan];
945 int i;
946
947 for (i = 0; i < insn->n; i++) {
948 val = data[i];
949 outb(val & 0xff, dev->iobase + PCL812_AO_LSB_REG(chan));
950 outb((val >> 8) & 0x0f, dev->iobase + PCL812_AO_MSB_REG(chan));
951 }
952 s->readback[chan] = val;
953
954 return insn->n;
955 }
956
pcl812_di_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)957 static int pcl812_di_insn_bits(struct comedi_device *dev,
958 struct comedi_subdevice *s,
959 struct comedi_insn *insn,
960 unsigned int *data)
961 {
962 data[1] = inb(dev->iobase + PCL812_DI_LSB_REG) |
963 (inb(dev->iobase + PCL812_DI_MSB_REG) << 8);
964
965 return insn->n;
966 }
967
pcl812_do_insn_bits(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_insn * insn,unsigned int * data)968 static int pcl812_do_insn_bits(struct comedi_device *dev,
969 struct comedi_subdevice *s,
970 struct comedi_insn *insn,
971 unsigned int *data)
972 {
973 if (comedi_dio_update_state(s, data)) {
974 outb(s->state & 0xff, dev->iobase + PCL812_DO_LSB_REG);
975 outb((s->state >> 8), dev->iobase + PCL812_DO_MSB_REG);
976 }
977
978 data[1] = s->state;
979
980 return insn->n;
981 }
982
pcl812_reset(struct comedi_device * dev)983 static void pcl812_reset(struct comedi_device *dev)
984 {
985 const struct pcl812_board *board = dev->board_ptr;
986 struct pcl812_private *devpriv = dev->private;
987 unsigned int chan;
988
989 /* disable analog input trigger */
990 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
991 dev->iobase + PCL812_CTRL_REG);
992 pcl812_ai_clear_eoc(dev);
993
994 /*
995 * Invalidate last_ai_chanspec then set analog input to
996 * known channel/range.
997 */
998 devpriv->last_ai_chanspec = CR_PACK(16, 0, 0);
999 pcl812_ai_set_chan_range(dev, CR_PACK(0, 0, 0), 0);
1000
1001 /* set analog output channels to 0V */
1002 for (chan = 0; chan < board->n_aochan; chan++) {
1003 outb(0, dev->iobase + PCL812_AO_LSB_REG(chan));
1004 outb(0, dev->iobase + PCL812_AO_MSB_REG(chan));
1005 }
1006
1007 /* set all digital outputs low */
1008 if (board->has_dio) {
1009 outb(0, dev->iobase + PCL812_DO_MSB_REG);
1010 outb(0, dev->iobase + PCL812_DO_LSB_REG);
1011 }
1012 }
1013
pcl812_set_ai_range_table(struct comedi_device * dev,struct comedi_subdevice * s,struct comedi_devconfig * it)1014 static void pcl812_set_ai_range_table(struct comedi_device *dev,
1015 struct comedi_subdevice *s,
1016 struct comedi_devconfig *it)
1017 {
1018 const struct pcl812_board *board = dev->board_ptr;
1019 struct pcl812_private *devpriv = dev->private;
1020
1021 switch (board->board_type) {
1022 case BOARD_PCL812PG:
1023 if (it->options[4] == 1)
1024 s->range_table = &range_pcl812pg2_ai;
1025 else
1026 s->range_table = board->rangelist_ai;
1027 break;
1028 case BOARD_PCL812:
1029 switch (it->options[4]) {
1030 case 0:
1031 s->range_table = &range_bipolar10;
1032 break;
1033 case 1:
1034 s->range_table = &range_bipolar5;
1035 break;
1036 case 2:
1037 s->range_table = &range_bipolar2_5;
1038 break;
1039 case 3:
1040 s->range_table = &range812_bipolar1_25;
1041 break;
1042 case 4:
1043 s->range_table = &range812_bipolar0_625;
1044 break;
1045 case 5:
1046 s->range_table = &range812_bipolar0_3125;
1047 break;
1048 default:
1049 s->range_table = &range_bipolar10;
1050 break;
1051 }
1052 break;
1053 case BOARD_PCL813B:
1054 if (it->options[1] == 1)
1055 s->range_table = &range_pcl813b2_ai;
1056 else
1057 s->range_table = board->rangelist_ai;
1058 break;
1059 case BOARD_ISO813:
1060 switch (it->options[1]) {
1061 case 0:
1062 s->range_table = &range_iso813_1_ai;
1063 break;
1064 case 1:
1065 s->range_table = &range_iso813_1_2_ai;
1066 break;
1067 case 2:
1068 s->range_table = &range_iso813_2_ai;
1069 devpriv->range_correction = 1;
1070 break;
1071 case 3:
1072 s->range_table = &range_iso813_2_2_ai;
1073 devpriv->range_correction = 1;
1074 break;
1075 default:
1076 s->range_table = &range_iso813_1_ai;
1077 break;
1078 }
1079 break;
1080 case BOARD_ACL8113:
1081 switch (it->options[1]) {
1082 case 0:
1083 s->range_table = &range_acl8113_1_ai;
1084 break;
1085 case 1:
1086 s->range_table = &range_acl8113_1_2_ai;
1087 break;
1088 case 2:
1089 s->range_table = &range_acl8113_2_ai;
1090 devpriv->range_correction = 1;
1091 break;
1092 case 3:
1093 s->range_table = &range_acl8113_2_2_ai;
1094 devpriv->range_correction = 1;
1095 break;
1096 default:
1097 s->range_table = &range_acl8113_1_ai;
1098 break;
1099 }
1100 break;
1101 default:
1102 s->range_table = board->rangelist_ai;
1103 break;
1104 }
1105 }
1106
pcl812_alloc_dma(struct comedi_device * dev,unsigned int dma_chan)1107 static void pcl812_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
1108 {
1109 struct pcl812_private *devpriv = dev->private;
1110
1111 /* only DMA channels 3 and 1 are valid */
1112 if (!(dma_chan == 3 || dma_chan == 1))
1113 return;
1114
1115 /* DMA uses two 8K buffers */
1116 devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
1117 PAGE_SIZE * 2, COMEDI_ISADMA_READ);
1118 }
1119
pcl812_free_dma(struct comedi_device * dev)1120 static void pcl812_free_dma(struct comedi_device *dev)
1121 {
1122 struct pcl812_private *devpriv = dev->private;
1123
1124 if (devpriv)
1125 comedi_isadma_free(devpriv->dma);
1126 }
1127
pcl812_attach(struct comedi_device * dev,struct comedi_devconfig * it)1128 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1129 {
1130 const struct pcl812_board *board = dev->board_ptr;
1131 struct pcl812_private *devpriv;
1132 struct comedi_subdevice *s;
1133 int n_subdevices;
1134 int subdev;
1135 int ret;
1136
1137 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
1138 if (!devpriv)
1139 return -ENOMEM;
1140
1141 ret = comedi_request_region(dev, it->options[0], 0x10);
1142 if (ret)
1143 return ret;
1144
1145 if (board->irq_bits) {
1146 dev->pacer = comedi_8254_init(dev->iobase + PCL812_TIMER_BASE,
1147 I8254_OSC_BASE_2MHZ,
1148 I8254_IO8, 0);
1149 if (!dev->pacer)
1150 return -ENOMEM;
1151
1152 if ((1 << it->options[1]) & board->irq_bits) {
1153 ret = request_irq(it->options[1], pcl812_interrupt, 0,
1154 dev->board_name, dev);
1155 if (ret == 0)
1156 dev->irq = it->options[1];
1157 }
1158 }
1159
1160 /* we need an IRQ to do DMA on channel 3 or 1 */
1161 if (dev->irq && board->has_dma)
1162 pcl812_alloc_dma(dev, it->options[2]);
1163
1164 /* differential analog inputs? */
1165 switch (board->board_type) {
1166 case BOARD_A821:
1167 if (it->options[2] == 1)
1168 devpriv->use_diff = 1;
1169 break;
1170 case BOARD_ACL8112:
1171 case BOARD_ACL8216:
1172 if (it->options[4] == 1)
1173 devpriv->use_diff = 1;
1174 break;
1175 default:
1176 break;
1177 }
1178
1179 n_subdevices = 1; /* all boardtypes have analog inputs */
1180 if (board->n_aochan > 0)
1181 n_subdevices++;
1182 if (board->has_dio)
1183 n_subdevices += 2;
1184
1185 ret = comedi_alloc_subdevices(dev, n_subdevices);
1186 if (ret)
1187 return ret;
1188
1189 subdev = 0;
1190
1191 /* Analog Input subdevice */
1192 s = &dev->subdevices[subdev];
1193 s->type = COMEDI_SUBD_AI;
1194 s->subdev_flags = SDF_READABLE;
1195 if (devpriv->use_diff) {
1196 s->subdev_flags |= SDF_DIFF;
1197 s->n_chan = board->n_aichan / 2;
1198 } else {
1199 s->subdev_flags |= SDF_GROUND;
1200 s->n_chan = board->n_aichan;
1201 }
1202 s->maxdata = board->has_16bit_ai ? 0xffff : 0x0fff;
1203
1204 pcl812_set_ai_range_table(dev, s, it);
1205
1206 s->insn_read = pcl812_ai_insn_read;
1207
1208 if (dev->irq) {
1209 dev->read_subdev = s;
1210 s->subdev_flags |= SDF_CMD_READ;
1211 s->len_chanlist = MAX_CHANLIST_LEN;
1212 s->do_cmdtest = pcl812_ai_cmdtest;
1213 s->do_cmd = pcl812_ai_cmd;
1214 s->poll = pcl812_ai_poll;
1215 s->cancel = pcl812_ai_cancel;
1216 }
1217
1218 devpriv->use_mpc508 = board->has_mpc508_mux;
1219
1220 subdev++;
1221
1222 /* analog output */
1223 if (board->n_aochan > 0) {
1224 s = &dev->subdevices[subdev];
1225 s->type = COMEDI_SUBD_AO;
1226 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
1227 s->n_chan = board->n_aochan;
1228 s->maxdata = 0xfff;
1229 switch (board->board_type) {
1230 case BOARD_A821:
1231 if (it->options[3] == 1)
1232 s->range_table = &range_unipolar10;
1233 else
1234 s->range_table = &range_unipolar5;
1235 break;
1236 case BOARD_PCL812:
1237 case BOARD_ACL8112:
1238 case BOARD_PCL812PG:
1239 case BOARD_ACL8216:
1240 switch (it->options[5]) {
1241 case 1:
1242 s->range_table = &range_unipolar10;
1243 break;
1244 case 2:
1245 s->range_table = &range_unknown;
1246 break;
1247 default:
1248 s->range_table = &range_unipolar5;
1249 break;
1250 }
1251 break;
1252 default:
1253 s->range_table = &range_unipolar5;
1254 break;
1255 }
1256 s->insn_write = pcl812_ao_insn_write;
1257
1258 ret = comedi_alloc_subdev_readback(s);
1259 if (ret)
1260 return ret;
1261
1262 subdev++;
1263 }
1264
1265 if (board->has_dio) {
1266 /* Digital Input subdevice */
1267 s = &dev->subdevices[subdev];
1268 s->type = COMEDI_SUBD_DI;
1269 s->subdev_flags = SDF_READABLE;
1270 s->n_chan = 16;
1271 s->maxdata = 1;
1272 s->range_table = &range_digital;
1273 s->insn_bits = pcl812_di_insn_bits;
1274 subdev++;
1275
1276 /* Digital Output subdevice */
1277 s = &dev->subdevices[subdev];
1278 s->type = COMEDI_SUBD_DO;
1279 s->subdev_flags = SDF_WRITABLE;
1280 s->n_chan = 16;
1281 s->maxdata = 1;
1282 s->range_table = &range_digital;
1283 s->insn_bits = pcl812_do_insn_bits;
1284 subdev++;
1285 }
1286
1287 switch (board->board_type) {
1288 case BOARD_ACL8216:
1289 case BOARD_PCL812PG:
1290 case BOARD_PCL812:
1291 case BOARD_ACL8112:
1292 devpriv->max_812_ai_mode0_rangewait = 1;
1293 if (it->options[3] > 0)
1294 /* we use external trigger */
1295 devpriv->use_ext_trg = 1;
1296 break;
1297 case BOARD_A821:
1298 devpriv->max_812_ai_mode0_rangewait = 1;
1299 devpriv->mode_reg_int = (dev->irq << 4) & 0xf0;
1300 break;
1301 case BOARD_PCL813B:
1302 case BOARD_PCL813:
1303 case BOARD_ISO813:
1304 case BOARD_ACL8113:
1305 /* maybe there must by greatest timeout */
1306 devpriv->max_812_ai_mode0_rangewait = 5;
1307 break;
1308 }
1309
1310 pcl812_reset(dev);
1311
1312 return 0;
1313 }
1314
pcl812_detach(struct comedi_device * dev)1315 static void pcl812_detach(struct comedi_device *dev)
1316 {
1317 pcl812_free_dma(dev);
1318 comedi_legacy_detach(dev);
1319 }
1320
1321 static struct comedi_driver pcl812_driver = {
1322 .driver_name = "pcl812",
1323 .module = THIS_MODULE,
1324 .attach = pcl812_attach,
1325 .detach = pcl812_detach,
1326 .board_name = &boardtypes[0].name,
1327 .num_names = ARRAY_SIZE(boardtypes),
1328 .offset = sizeof(struct pcl812_board),
1329 };
1330 module_comedi_driver(pcl812_driver);
1331
1332 MODULE_AUTHOR("Comedi https://www.comedi.org");
1333 MODULE_DESCRIPTION("Comedi low-level driver");
1334 MODULE_LICENSE("GPL");
1335