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Merge branch 'next/drivers' into HEAD
[deliverable/linux.git] / drivers / staging / comedi / drivers / pcl812.c
1 /*
2 * comedi/drivers/pcl812.c
3 *
4 * Author: Michal Dobes <dobes@tesnet.cz>
5 *
6 * hardware driver for Advantech cards
7 * card: PCL-812, PCL-812PG, PCL-813, PCL-813B
8 * driver: pcl812, pcl812pg, pcl813, pcl813b
9 * and for ADlink cards
10 * card: ACL-8112DG, ACL-8112HG, ACL-8112PG, ACL-8113, ACL-8216
11 * driver: acl8112dg, acl8112hg, acl8112pg, acl8113, acl8216
12 * and for ICP DAS cards
13 * card: ISO-813, A-821PGH, A-821PGL, A-821PGL-NDA, A-822PGH, A-822PGL,
14 * driver: iso813, a821pgh, a-821pgl, a-821pglnda, a822pgh, a822pgl,
15 * card: A-823PGH, A-823PGL, A-826PG
16 * driver: a823pgh, a823pgl, a826pg
17 */
18
19 /*
20 * Driver: pcl812
21 * Description: Advantech PCL-812/PG, PCL-813/B,
22 * ADLink ACL-8112DG/HG/PG, ACL-8113, ACL-8216,
23 * ICP DAS A-821PGH/PGL/PGL-NDA, A-822PGH/PGL, A-823PGH/PGL, A-826PG,
24 * ICP DAS ISO-813
25 * Author: Michal Dobes <dobes@tesnet.cz>
26 * Devices: [Advantech] PCL-812 (pcl812), PCL-812PG (pcl812pg),
27 * PCL-813 (pcl813), PCL-813B (pcl813b), [ADLink] ACL-8112DG (acl8112dg),
28 * ACL-8112HG (acl8112hg), ACL-8113 (acl-8113), ACL-8216 (acl8216),
29 * [ICP] ISO-813 (iso813), A-821PGH (a821pgh), A-821PGL (a821pgl),
30 * A-821PGL-NDA (a821pclnda), A-822PGH (a822pgh), A-822PGL (a822pgl),
31 * A-823PGH (a823pgh), A-823PGL (a823pgl), A-826PG (a826pg)
32 * Updated: Mon, 06 Aug 2007 12:03:15 +0100
33 * Status: works (I hope. My board fire up under my hands
34 * and I cann't test all features.)
35 *
36 * This driver supports insn and cmd interfaces. Some boards support only insn
37 * because their hardware don't allow more (PCL-813/B, ACL-8113, ISO-813).
38 * Data transfer over DMA is supported only when you measure only one
39 * channel, this is too hardware limitation of these boards.
40 *
41 * Options for PCL-812:
42 * [0] - IO Base
43 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
44 * [2] - DMA (0=disable, 1, 3)
45 * [3] - 0=trigger source is internal 8253 with 2MHz clock
46 * 1=trigger source is external
47 * [4] - 0=A/D input range is +/-10V
48 * 1=A/D input range is +/-5V
49 * 2=A/D input range is +/-2.5V
50 * 3=A/D input range is +/-1.25V
51 * 4=A/D input range is +/-0.625V
52 * 5=A/D input range is +/-0.3125V
53 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
54 * 1=D/A outputs 0-10V (internal reference -10V)
55 * 2=D/A outputs unknown (external reference)
56 *
57 * Options for PCL-812PG, ACL-8112PG:
58 * [0] - IO Base
59 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
60 * [2] - DMA (0=disable, 1, 3)
61 * [3] - 0=trigger source is internal 8253 with 2MHz clock
62 * 1=trigger source is external
63 * [4] - 0=A/D have max +/-5V input
64 * 1=A/D have max +/-10V input
65 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
66 * 1=D/A outputs 0-10V (internal reference -10V)
67 * 2=D/A outputs unknown (external reference)
68 *
69 * Options for ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH, ACL-8216, A-826PG:
70 * [0] - IO Base
71 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7; 10, 11, 12, 14, 15)
72 * [2] - DMA (0=disable, 1, 3)
73 * [3] - 0=trigger source is internal 8253 with 2MHz clock
74 * 1=trigger source is external
75 * [4] - 0=A/D channels are S.E.
76 * 1=A/D channels are DIFF
77 * [5] - 0=D/A outputs 0-5V (internal reference -5V)
78 * 1=D/A outputs 0-10V (internal reference -10V)
79 * 2=D/A outputs unknown (external reference)
80 *
81 * Options for A-821PGL/PGH:
82 * [0] - IO Base
83 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
84 * [2] - 0=A/D channels are S.E.
85 * 1=A/D channels are DIFF
86 * [3] - 0=D/A output 0-5V (internal reference -5V)
87 * 1=D/A output 0-10V (internal reference -10V)
88 *
89 * Options for A-821PGL-NDA:
90 * [0] - IO Base
91 * [1] - IRQ (0=disable, 2, 3, 4, 5, 6, 7)
92 * [2] - 0=A/D channels are S.E.
93 * 1=A/D channels are DIFF
94 *
95 * Options for PCL-813:
96 * [0] - IO Base
97 *
98 * Options for PCL-813B:
99 * [0] - IO Base
100 * [1] - 0= bipolar inputs
101 * 1= unipolar inputs
102 *
103 * Options for ACL-8113, ISO-813:
104 * [0] - IO Base
105 * [1] - 0= 10V bipolar inputs
106 * 1= 10V unipolar inputs
107 * 2= 20V bipolar inputs
108 * 3= 20V unipolar inputs
109 */
110
111 #include <linux/interrupt.h>
112 #include <linux/gfp.h>
113 #include "../comedidev.h"
114
115 #include <linux/delay.h>
116 #include <linux/ioport.h>
117 #include <linux/io.h>
118 #include <asm/dma.h>
119
120 #include "comedi_fc.h"
121 #include "8253.h"
122
123 /* hardware types of the cards */
124 #define boardPCL812PG 0 /* and ACL-8112PG */
125 #define boardPCL813B 1
126 #define boardPCL812 2
127 #define boardPCL813 3
128 #define boardISO813 5
129 #define boardACL8113 6
130 #define boardACL8112 7 /* ACL-8112DG/HG, A-822PGL/PGH, A-823PGL/PGH */
131 #define boardACL8216 8 /* and ICP DAS A-826PG */
132 #define boardA821 9 /* PGH, PGL, PGL/NDA versions */
133
134 #define PCLx1x_IORANGE 16
135
136 #define PCL812_CTR0 0
137 #define PCL812_CTR1 1
138 #define PCL812_CTR2 2
139 #define PCL812_CTRCTL 3
140 #define PCL812_AD_LO 4
141 #define PCL812_DA1_LO 4
142 #define PCL812_AD_HI 5
143 #define PCL812_DA1_HI 5
144 #define PCL812_DA2_LO 6
145 #define PCL812_DI_LO 6
146 #define PCL812_DA2_HI 7
147 #define PCL812_DI_HI 7
148 #define PCL812_CLRINT 8
149 #define PCL812_GAIN 9
150 #define PCL812_MUX 10
151 #define PCL812_MODE 11
152 #define PCL812_CNTENABLE 10
153 #define PCL812_SOFTTRIG 12
154 #define PCL812_DO_LO 13
155 #define PCL812_DO_HI 14
156
157 #define PCL812_DRDY 0x10 /* =0 data ready */
158
159 #define ACL8216_STATUS 8 /* 5. bit signalize data ready */
160
161 #define ACL8216_DRDY 0x20 /* =0 data ready */
162
163 #define MAX_CHANLIST_LEN 256 /* length of scan list */
164
165 static const struct comedi_lrange range_pcl812pg_ai = { 5, {
166 BIP_RANGE(5),
167 BIP_RANGE(2.5),
168 BIP_RANGE(1.25),
169 BIP_RANGE(0.625),
170 BIP_RANGE(0.3125),
171 }
172 };
173
174 static const struct comedi_lrange range_pcl812pg2_ai = { 5, {
175 BIP_RANGE(10),
176 BIP_RANGE(5),
177 BIP_RANGE(2.5),
178 BIP_RANGE(1.25),
179 BIP_RANGE(0.625),
180 }
181 };
182
183 static const struct comedi_lrange range812_bipolar1_25 = { 1, {
184 BIP_RANGE(1.25),
185 }
186 };
187
188 static const struct comedi_lrange range812_bipolar0_625 = { 1, {
189 BIP_RANGE
190 (0.625),
191 }
192 };
193
194 static const struct comedi_lrange range812_bipolar0_3125 = { 1, {
195 BIP_RANGE
196 (0.3125),
197 }
198 };
199
200 static const struct comedi_lrange range_pcl813b_ai = { 4, {
201 BIP_RANGE(5),
202 BIP_RANGE(2.5),
203 BIP_RANGE(1.25),
204 BIP_RANGE(0.625),
205 }
206 };
207
208 static const struct comedi_lrange range_pcl813b2_ai = { 4, {
209 UNI_RANGE(10),
210 UNI_RANGE(5),
211 UNI_RANGE(2.5),
212 UNI_RANGE(1.25),
213 }
214 };
215
216 static const struct comedi_lrange range_iso813_1_ai = { 5, {
217 BIP_RANGE(5),
218 BIP_RANGE(2.5),
219 BIP_RANGE(1.25),
220 BIP_RANGE(0.625),
221 BIP_RANGE(0.3125),
222 }
223 };
224
225 static const struct comedi_lrange range_iso813_1_2_ai = { 5, {
226 UNI_RANGE(10),
227 UNI_RANGE(5),
228 UNI_RANGE(2.5),
229 UNI_RANGE(1.25),
230 UNI_RANGE(0.625),
231 }
232 };
233
234 static const struct comedi_lrange range_iso813_2_ai = { 4, {
235 BIP_RANGE(5),
236 BIP_RANGE(2.5),
237 BIP_RANGE(1.25),
238 BIP_RANGE(0.625),
239 }
240 };
241
242 static const struct comedi_lrange range_iso813_2_2_ai = { 4, {
243 UNI_RANGE(10),
244 UNI_RANGE(5),
245 UNI_RANGE(2.5),
246 UNI_RANGE(1.25),
247 }
248 };
249
250 static const struct comedi_lrange range_acl8113_1_ai = { 4, {
251 BIP_RANGE(5),
252 BIP_RANGE(2.5),
253 BIP_RANGE(1.25),
254 BIP_RANGE(0.625),
255 }
256 };
257
258 static const struct comedi_lrange range_acl8113_1_2_ai = { 4, {
259 UNI_RANGE(10),
260 UNI_RANGE(5),
261 UNI_RANGE(2.5),
262 UNI_RANGE(1.25),
263 }
264 };
265
266 static const struct comedi_lrange range_acl8113_2_ai = { 3, {
267 BIP_RANGE(5),
268 BIP_RANGE(2.5),
269 BIP_RANGE(1.25),
270 }
271 };
272
273 static const struct comedi_lrange range_acl8113_2_2_ai = { 3, {
274 UNI_RANGE(10),
275 UNI_RANGE(5),
276 UNI_RANGE(2.5),
277 }
278 };
279
280 static const struct comedi_lrange range_acl8112dg_ai = { 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 = { 12, {
294 BIP_RANGE(5),
295 BIP_RANGE(0.5),
296 BIP_RANGE(0.05),
297 BIP_RANGE(0.005),
298 UNI_RANGE(10),
299 UNI_RANGE(1),
300 UNI_RANGE(0.1),
301 UNI_RANGE(0.01),
302 BIP_RANGE(10),
303 BIP_RANGE(1),
304 BIP_RANGE(0.1),
305 BIP_RANGE(0.01),
306 }
307 };
308
309 static const struct comedi_lrange range_a821pgh_ai = { 4, {
310 BIP_RANGE(5),
311 BIP_RANGE(0.5),
312 BIP_RANGE(0.05),
313 BIP_RANGE(0.005),
314 }
315 };
316
317 struct pcl812_board {
318
319 const char *name; /* board name */
320 int board_type; /* type of this board */
321 int n_aichan; /* num of AI chans in S.E. */
322 int n_aichan_diff; /* DIFF num of chans */
323 int n_aochan; /* num of DA chans */
324 int n_dichan; /* DI and DO chans */
325 int n_dochan;
326 int ai_maxdata; /* AI resolution */
327 unsigned int ai_ns_min; /* max sample speed of card v ns */
328 unsigned int i8254_osc_base; /* clock base */
329 const struct comedi_lrange *rangelist_ai; /* rangelist for A/D */
330 const struct comedi_lrange *rangelist_ao; /* rangelist for D/A */
331 unsigned int IRQbits; /* allowed IRQ */
332 unsigned char DMAbits; /* allowed DMA chans */
333 unsigned char io_range; /* iorange for this board */
334 unsigned char haveMPC508; /* 1=board use MPC508A multiplexor */
335 };
336
337 struct pcl812_private {
338
339 unsigned char valid; /* =1 device is OK */
340 unsigned char dma; /* >0 use dma ( usedDMA channel) */
341 unsigned char use_diff; /* =1 diff inputs */
342 unsigned char use_MPC; /* 1=board uses MPC508A multiplexor */
343 unsigned char use_ext_trg; /* 1=board uses external trigger */
344 unsigned char range_correction; /* =1 we must add 1 to range number */
345 unsigned char old_chan_reg; /* lastly used chan/gain pair */
346 unsigned char old_gain_reg;
347 unsigned char mode_reg_int; /* there is stored INT number for some card */
348 unsigned char ai_neverending; /* =1 we do unlimited AI */
349 unsigned char ai_eos; /* 1=EOS wake up */
350 unsigned char ai_dma; /* =1 we use DMA */
351 unsigned int ai_poll_ptr; /* how many sampes transfer poll */
352 unsigned int ai_scans; /* len of scanlist */
353 unsigned int ai_act_scan; /* how many scans we finished */
354 unsigned int ai_chanlist[MAX_CHANLIST_LEN]; /* our copy of channel/range list */
355 unsigned int ai_n_chan; /* how many channels is measured */
356 unsigned int ai_flags; /* flaglist */
357 unsigned int ai_data_len; /* len of data buffer */
358 short *ai_data; /* data buffer */
359 unsigned int ai_is16b; /* =1 we have 16 bit card */
360 unsigned long dmabuf[2]; /* PTR to DMA buf */
361 unsigned int dmapages[2]; /* how many pages we have allocated */
362 unsigned int hwdmaptr[2]; /* HW PTR to DMA buf */
363 unsigned int hwdmasize[2]; /* DMA buf size in bytes */
364 unsigned int dmabytestomove[2]; /* how many bytes DMA transfer */
365 int next_dma_buf; /* which buffer is next to use */
366 unsigned int dma_runs_to_end; /* how many times we must switch DMA buffers */
367 unsigned int last_dma_run; /* how many bytes to transfer on last DMA buffer */
368 unsigned int max_812_ai_mode0_rangewait; /* setling time for gain */
369 unsigned int ao_readback[2]; /* data for AO readback */
370 };
371
372 #define devpriv ((struct pcl812_private *)dev->private)
373
374 /*
375 ==============================================================================
376 */
377 static void start_pacer(struct comedi_device *dev, int mode,
378 unsigned int divisor1, unsigned int divisor2);
379 static void setup_range_channel(struct comedi_device *dev,
380 struct comedi_subdevice *s,
381 unsigned int rangechan, char wait);
382 static int pcl812_ai_cancel(struct comedi_device *dev,
383 struct comedi_subdevice *s);
384 /*
385 ==============================================================================
386 */
387 static int pcl812_ai_insn_read(struct comedi_device *dev,
388 struct comedi_subdevice *s,
389 struct comedi_insn *insn, unsigned int *data)
390 {
391 int n;
392 int timeout, hi;
393
394 /* select software trigger */
395 outb(devpriv->mode_reg_int | 1, dev->iobase + PCL812_MODE);
396 /* select channel and renge */
397 setup_range_channel(dev, s, insn->chanspec, 1);
398 for (n = 0; n < insn->n; n++) {
399 /* start conversion */
400 outb(255, dev->iobase + PCL812_SOFTTRIG);
401 udelay(5);
402 timeout = 50; /* wait max 50us, it must finish under 33us */
403 while (timeout--) {
404 hi = inb(dev->iobase + PCL812_AD_HI);
405 if (!(hi & PCL812_DRDY))
406 goto conv_finish;
407 udelay(1);
408 }
409 printk
410 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
411 dev->minor, dev->board_name, dev->iobase);
412 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
413 return -ETIME;
414
415 conv_finish:
416 data[n] = ((hi & 0xf) << 8) | inb(dev->iobase + PCL812_AD_LO);
417 }
418 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
419 return n;
420 }
421
422 /*
423 ==============================================================================
424 */
425 static int acl8216_ai_insn_read(struct comedi_device *dev,
426 struct comedi_subdevice *s,
427 struct comedi_insn *insn, unsigned int *data)
428 {
429 int n;
430 int timeout;
431
432 /* select software trigger */
433 outb(1, dev->iobase + PCL812_MODE);
434 /* select channel and renge */
435 setup_range_channel(dev, s, insn->chanspec, 1);
436 for (n = 0; n < insn->n; n++) {
437 /* start conversion */
438 outb(255, dev->iobase + PCL812_SOFTTRIG);
439 udelay(5);
440 timeout = 50; /* wait max 50us, it must finish under 33us */
441 while (timeout--) {
442 if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY))
443 goto conv_finish;
444 udelay(1);
445 }
446 printk
447 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
448 dev->minor, dev->board_name, dev->iobase);
449 outb(0, dev->iobase + PCL812_MODE);
450 return -ETIME;
451
452 conv_finish:
453 data[n] =
454 (inb(dev->iobase +
455 PCL812_AD_HI) << 8) | inb(dev->iobase + PCL812_AD_LO);
456 }
457 outb(0, dev->iobase + PCL812_MODE);
458 return n;
459 }
460
461 /*
462 ==============================================================================
463 */
464 static int pcl812_ao_insn_write(struct comedi_device *dev,
465 struct comedi_subdevice *s,
466 struct comedi_insn *insn, unsigned int *data)
467 {
468 int chan = CR_CHAN(insn->chanspec);
469 int i;
470
471 for (i = 0; i < insn->n; i++) {
472 outb((data[i] & 0xff),
473 dev->iobase + (chan ? PCL812_DA2_LO : PCL812_DA1_LO));
474 outb((data[i] >> 8) & 0x0f,
475 dev->iobase + (chan ? PCL812_DA2_HI : PCL812_DA1_HI));
476 devpriv->ao_readback[chan] = data[i];
477 }
478
479 return i;
480 }
481
482 /*
483 ==============================================================================
484 */
485 static int pcl812_ao_insn_read(struct comedi_device *dev,
486 struct comedi_subdevice *s,
487 struct comedi_insn *insn, unsigned int *data)
488 {
489 int chan = CR_CHAN(insn->chanspec);
490 int i;
491
492 for (i = 0; i < insn->n; i++)
493 data[i] = devpriv->ao_readback[chan];
494
495 return i;
496 }
497
498 /*
499 ==============================================================================
500 */
501 static int pcl812_di_insn_bits(struct comedi_device *dev,
502 struct comedi_subdevice *s,
503 struct comedi_insn *insn, unsigned int *data)
504 {
505 data[1] = inb(dev->iobase + PCL812_DI_LO);
506 data[1] |= inb(dev->iobase + PCL812_DI_HI) << 8;
507
508 return insn->n;
509 }
510
511 /*
512 ==============================================================================
513 */
514 static int pcl812_do_insn_bits(struct comedi_device *dev,
515 struct comedi_subdevice *s,
516 struct comedi_insn *insn, unsigned int *data)
517 {
518 if (data[0]) {
519 s->state &= ~data[0];
520 s->state |= data[0] & data[1];
521 outb(s->state & 0xff, dev->iobase + PCL812_DO_LO);
522 outb((s->state >> 8), dev->iobase + PCL812_DO_HI);
523 }
524 data[1] = s->state;
525
526 return insn->n;
527 }
528
529 /*
530 ==============================================================================
531 */
532 static int pcl812_ai_cmdtest(struct comedi_device *dev,
533 struct comedi_subdevice *s, struct comedi_cmd *cmd)
534 {
535 const struct pcl812_board *board = comedi_board(dev);
536 int err = 0;
537 unsigned int flags;
538 int tmp, divisor1, divisor2;
539
540 /* Step 1 : check if triggers are trivially valid */
541
542 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
543 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
544
545 if (devpriv->use_ext_trg)
546 flags = TRIG_EXT;
547 else
548 flags = TRIG_TIMER;
549 err |= cfc_check_trigger_src(&cmd->convert_src, flags);
550
551 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
552 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
553
554 if (err)
555 return 1;
556
557 /* Step 2a : make sure trigger sources are unique */
558
559 err |= cfc_check_trigger_is_unique(cmd->stop_src);
560
561 /* Step 2b : and mutually compatible */
562
563 if (err)
564 return 2;
565
566 /* step 3: make sure arguments are trivially compatible */
567
568 if (cmd->start_arg != 0) {
569 cmd->start_arg = 0;
570 err++;
571 }
572
573 if (cmd->scan_begin_arg != 0) {
574 cmd->scan_begin_arg = 0;
575 err++;
576 }
577
578 if (cmd->convert_src == TRIG_TIMER) {
579 if (cmd->convert_arg < board->ai_ns_min) {
580 cmd->convert_arg = board->ai_ns_min;
581 err++;
582 }
583 } else { /* TRIG_EXT */
584 if (cmd->convert_arg != 0) {
585 cmd->convert_arg = 0;
586 err++;
587 }
588 }
589
590 if (!cmd->chanlist_len) {
591 cmd->chanlist_len = 1;
592 err++;
593 }
594 if (cmd->chanlist_len > MAX_CHANLIST_LEN) {
595 cmd->chanlist_len = board->n_aichan;
596 err++;
597 }
598 if (cmd->scan_end_arg != cmd->chanlist_len) {
599 cmd->scan_end_arg = cmd->chanlist_len;
600 err++;
601 }
602 if (cmd->stop_src == TRIG_COUNT) {
603 if (!cmd->stop_arg) {
604 cmd->stop_arg = 1;
605 err++;
606 }
607 } else { /* TRIG_NONE */
608 if (cmd->stop_arg != 0) {
609 cmd->stop_arg = 0;
610 err++;
611 }
612 }
613
614 if (err)
615 return 3;
616
617 /* step 4: fix up any arguments */
618
619 if (cmd->convert_src == TRIG_TIMER) {
620 tmp = cmd->convert_arg;
621 i8253_cascade_ns_to_timer(board->i8254_osc_base, &divisor1,
622 &divisor2, &cmd->convert_arg,
623 cmd->flags & TRIG_ROUND_MASK);
624 if (cmd->convert_arg < board->ai_ns_min)
625 cmd->convert_arg = board->ai_ns_min;
626 if (tmp != cmd->convert_arg)
627 err++;
628 }
629
630 if (err)
631 return 4;
632
633 return 0;
634 }
635
636 /*
637 ==============================================================================
638 */
639 static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
640 {
641 const struct pcl812_board *board = comedi_board(dev);
642 unsigned int divisor1 = 0, divisor2 = 0, i, dma_flags, bytes;
643 struct comedi_cmd *cmd = &s->async->cmd;
644
645 if (cmd->start_src != TRIG_NOW)
646 return -EINVAL;
647 if (cmd->scan_begin_src != TRIG_FOLLOW)
648 return -EINVAL;
649 if (devpriv->use_ext_trg) {
650 if (cmd->convert_src != TRIG_EXT)
651 return -EINVAL;
652 } else {
653 if (cmd->convert_src != TRIG_TIMER)
654 return -EINVAL;
655 }
656 if (cmd->scan_end_src != TRIG_COUNT)
657 return -EINVAL;
658 if (cmd->scan_end_arg != cmd->chanlist_len)
659 return -EINVAL;
660 if (cmd->chanlist_len > MAX_CHANLIST_LEN)
661 return -EINVAL;
662
663 if (cmd->convert_src == TRIG_TIMER) {
664 if (cmd->convert_arg < board->ai_ns_min)
665 cmd->convert_arg = board->ai_ns_min;
666 i8253_cascade_ns_to_timer(board->i8254_osc_base,
667 &divisor1, &divisor2,
668 &cmd->convert_arg,
669 cmd->flags & TRIG_ROUND_MASK);
670 }
671
672 start_pacer(dev, -1, 0, 0); /* stop pacer */
673
674 devpriv->ai_n_chan = cmd->chanlist_len;
675 memcpy(devpriv->ai_chanlist, cmd->chanlist,
676 sizeof(unsigned int) * cmd->scan_end_arg);
677 /* select first channel and range */
678 setup_range_channel(dev, s, devpriv->ai_chanlist[0], 1);
679
680 if (devpriv->dma) { /* check if we can use DMA transfer */
681 devpriv->ai_dma = 1;
682 for (i = 1; i < devpriv->ai_n_chan; i++)
683 if (devpriv->ai_chanlist[0] != devpriv->ai_chanlist[i]) {
684 /* we cann't use DMA :-( */
685 devpriv->ai_dma = 0;
686 break;
687 }
688 } else
689 devpriv->ai_dma = 0;
690
691 devpriv->ai_flags = cmd->flags;
692 devpriv->ai_data_len = s->async->prealloc_bufsz;
693 devpriv->ai_data = s->async->prealloc_buf;
694 if (cmd->stop_src == TRIG_COUNT) {
695 devpriv->ai_scans = cmd->stop_arg;
696 devpriv->ai_neverending = 0;
697 } else {
698 devpriv->ai_scans = 0;
699 devpriv->ai_neverending = 1;
700 }
701
702 devpriv->ai_act_scan = 0;
703 devpriv->ai_poll_ptr = 0;
704 s->async->cur_chan = 0;
705
706 /* don't we want wake up every scan? */
707 if ((devpriv->ai_flags & TRIG_WAKE_EOS)) {
708 devpriv->ai_eos = 1;
709
710 /* DMA is useless for this situation */
711 if (devpriv->ai_n_chan == 1)
712 devpriv->ai_dma = 0;
713 }
714
715 if (devpriv->ai_dma) {
716 /* we use EOS, so adapt DMA buffer to one scan */
717 if (devpriv->ai_eos) {
718 devpriv->dmabytestomove[0] =
719 devpriv->ai_n_chan * sizeof(short);
720 devpriv->dmabytestomove[1] =
721 devpriv->ai_n_chan * sizeof(short);
722 devpriv->dma_runs_to_end = 1;
723 } else {
724 devpriv->dmabytestomove[0] = devpriv->hwdmasize[0];
725 devpriv->dmabytestomove[1] = devpriv->hwdmasize[1];
726 if (devpriv->ai_data_len < devpriv->hwdmasize[0])
727 devpriv->dmabytestomove[0] =
728 devpriv->ai_data_len;
729 if (devpriv->ai_data_len < devpriv->hwdmasize[1])
730 devpriv->dmabytestomove[1] =
731 devpriv->ai_data_len;
732 if (devpriv->ai_neverending) {
733 devpriv->dma_runs_to_end = 1;
734 } else {
735 /* how many samples we must transfer? */
736 bytes = devpriv->ai_n_chan *
737 devpriv->ai_scans * sizeof(short);
738
739 /* how many DMA pages we must fill */
740 devpriv->dma_runs_to_end =
741 bytes / devpriv->dmabytestomove[0];
742
743 /* on last dma transfer must be moved */
744 devpriv->last_dma_run =
745 bytes % devpriv->dmabytestomove[0];
746 if (devpriv->dma_runs_to_end == 0)
747 devpriv->dmabytestomove[0] =
748 devpriv->last_dma_run;
749 devpriv->dma_runs_to_end--;
750 }
751 }
752 if (devpriv->dmabytestomove[0] > devpriv->hwdmasize[0]) {
753 devpriv->dmabytestomove[0] = devpriv->hwdmasize[0];
754 devpriv->ai_eos = 0;
755 }
756 if (devpriv->dmabytestomove[1] > devpriv->hwdmasize[1]) {
757 devpriv->dmabytestomove[1] = devpriv->hwdmasize[1];
758 devpriv->ai_eos = 0;
759 }
760 devpriv->next_dma_buf = 0;
761 set_dma_mode(devpriv->dma, DMA_MODE_READ);
762 dma_flags = claim_dma_lock();
763 clear_dma_ff(devpriv->dma);
764 set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]);
765 set_dma_count(devpriv->dma, devpriv->dmabytestomove[0]);
766 release_dma_lock(dma_flags);
767 enable_dma(devpriv->dma);
768 }
769
770 switch (cmd->convert_src) {
771 case TRIG_TIMER:
772 start_pacer(dev, 1, divisor1, divisor2);
773 break;
774 }
775
776 if (devpriv->ai_dma) /* let's go! */
777 outb(devpriv->mode_reg_int | 2, dev->iobase + PCL812_MODE);
778 else /* let's go! */
779 outb(devpriv->mode_reg_int | 6, dev->iobase + PCL812_MODE);
780
781 return 0;
782 }
783
784 /*
785 ==============================================================================
786 */
787 static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d)
788 {
789 char err = 1;
790 unsigned int mask, timeout;
791 struct comedi_device *dev = d;
792 struct comedi_subdevice *s = &dev->subdevices[0];
793 unsigned int next_chan;
794
795 s->async->events = 0;
796
797 timeout = 50; /* wait max 50us, it must finish under 33us */
798 if (devpriv->ai_is16b) {
799 mask = 0xffff;
800 while (timeout--) {
801 if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY)) {
802 err = 0;
803 break;
804 }
805 udelay(1);
806 }
807 } else {
808 mask = 0x0fff;
809 while (timeout--) {
810 if (!(inb(dev->iobase + PCL812_AD_HI) & PCL812_DRDY)) {
811 err = 0;
812 break;
813 }
814 udelay(1);
815 }
816 }
817
818 if (err) {
819 printk
820 ("comedi%d: pcl812: (%s at 0x%lx) "
821 "A/D cmd IRQ without DRDY!\n",
822 dev->minor, dev->board_name, dev->iobase);
823 pcl812_ai_cancel(dev, s);
824 s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
825 comedi_event(dev, s);
826 return IRQ_HANDLED;
827 }
828
829 comedi_buf_put(s->async,
830 ((inb(dev->iobase + PCL812_AD_HI) << 8) |
831 inb(dev->iobase + PCL812_AD_LO)) & mask);
832
833 /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
834 next_chan = s->async->cur_chan + 1;
835 if (next_chan >= devpriv->ai_n_chan)
836 next_chan = 0;
837 if (devpriv->ai_chanlist[s->async->cur_chan] !=
838 devpriv->ai_chanlist[next_chan])
839 setup_range_channel(dev, s, devpriv->ai_chanlist[next_chan], 0);
840
841 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
842
843 s->async->cur_chan = next_chan;
844 if (next_chan == 0) { /* one scan done */
845 devpriv->ai_act_scan++;
846 if (!(devpriv->ai_neverending))
847 /* all data sampled */
848 if (devpriv->ai_act_scan >= devpriv->ai_scans) {
849 pcl812_ai_cancel(dev, s);
850 s->async->events |= COMEDI_CB_EOA;
851 }
852 }
853
854 comedi_event(dev, s);
855 return IRQ_HANDLED;
856 }
857
858 /*
859 ==============================================================================
860 */
861 static void transfer_from_dma_buf(struct comedi_device *dev,
862 struct comedi_subdevice *s, short *ptr,
863 unsigned int bufptr, unsigned int len)
864 {
865 unsigned int i;
866
867 s->async->events = 0;
868 for (i = len; i; i--) {
869 /* get one sample */
870 comedi_buf_put(s->async, ptr[bufptr++]);
871
872 s->async->cur_chan++;
873 if (s->async->cur_chan >= devpriv->ai_n_chan) {
874 s->async->cur_chan = 0;
875 devpriv->ai_act_scan++;
876 if (!devpriv->ai_neverending)
877 /* all data sampled */
878 if (devpriv->ai_act_scan >= devpriv->ai_scans) {
879 pcl812_ai_cancel(dev, s);
880 s->async->events |= COMEDI_CB_EOA;
881 break;
882 }
883 }
884 }
885
886 comedi_event(dev, s);
887 }
888
889 /*
890 ==============================================================================
891 */
892 static irqreturn_t interrupt_pcl812_ai_dma(int irq, void *d)
893 {
894 struct comedi_device *dev = d;
895 struct comedi_subdevice *s = &dev->subdevices[0];
896 unsigned long dma_flags;
897 int len, bufptr;
898 short *ptr;
899
900 ptr = (short *)devpriv->dmabuf[devpriv->next_dma_buf];
901 len = (devpriv->dmabytestomove[devpriv->next_dma_buf] >> 1) -
902 devpriv->ai_poll_ptr;
903
904 devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
905 disable_dma(devpriv->dma);
906 set_dma_mode(devpriv->dma, DMA_MODE_READ);
907 dma_flags = claim_dma_lock();
908 set_dma_addr(devpriv->dma, devpriv->hwdmaptr[devpriv->next_dma_buf]);
909 if (devpriv->ai_eos) {
910 set_dma_count(devpriv->dma,
911 devpriv->dmabytestomove[devpriv->next_dma_buf]);
912 } else {
913 if (devpriv->dma_runs_to_end) {
914 set_dma_count(devpriv->dma,
915 devpriv->dmabytestomove[devpriv->
916 next_dma_buf]);
917 } else {
918 set_dma_count(devpriv->dma, devpriv->last_dma_run);
919 }
920 devpriv->dma_runs_to_end--;
921 }
922 release_dma_lock(dma_flags);
923 enable_dma(devpriv->dma);
924
925 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
926
927 bufptr = devpriv->ai_poll_ptr;
928 devpriv->ai_poll_ptr = 0;
929
930 transfer_from_dma_buf(dev, s, ptr, bufptr, len);
931
932 return IRQ_HANDLED;
933 }
934
935 /*
936 ==============================================================================
937 */
938 static irqreturn_t interrupt_pcl812(int irq, void *d)
939 {
940 struct comedi_device *dev = d;
941
942 if (!dev->attached) {
943 comedi_error(dev, "spurious interrupt");
944 return IRQ_HANDLED;
945 }
946 if (devpriv->ai_dma)
947 return interrupt_pcl812_ai_dma(irq, d);
948 else
949 return interrupt_pcl812_ai_int(irq, d);
950 }
951
952 /*
953 ==============================================================================
954 */
955 static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
956 {
957 unsigned long flags;
958 unsigned int top1, top2, i;
959
960 if (!devpriv->ai_dma)
961 return 0; /* poll is valid only for DMA transfer */
962
963 spin_lock_irqsave(&dev->spinlock, flags);
964
965 for (i = 0; i < 10; i++) {
966 /* where is now DMA */
967 top1 = get_dma_residue(devpriv->ai_dma);
968 top2 = get_dma_residue(devpriv->ai_dma);
969 if (top1 == top2)
970 break;
971 }
972
973 if (top1 != top2) {
974 spin_unlock_irqrestore(&dev->spinlock, flags);
975 return 0;
976 }
977 /* where is now DMA in buffer */
978 top1 = devpriv->dmabytestomove[1 - devpriv->next_dma_buf] - top1;
979 top1 >>= 1; /* sample position */
980 top2 = top1 - devpriv->ai_poll_ptr;
981 if (top2 < 1) { /* no new samples */
982 spin_unlock_irqrestore(&dev->spinlock, flags);
983 return 0;
984 }
985
986 transfer_from_dma_buf(dev, s,
987 (void *)devpriv->dmabuf[1 -
988 devpriv->next_dma_buf],
989 devpriv->ai_poll_ptr, top2);
990
991 devpriv->ai_poll_ptr = top1; /* new buffer position */
992
993 spin_unlock_irqrestore(&dev->spinlock, flags);
994
995 return s->async->buf_write_count - s->async->buf_read_count;
996 }
997
998 /*
999 ==============================================================================
1000 */
1001 static void setup_range_channel(struct comedi_device *dev,
1002 struct comedi_subdevice *s,
1003 unsigned int rangechan, char wait)
1004 {
1005 unsigned char chan_reg = CR_CHAN(rangechan); /* normal board */
1006 /* gain index */
1007 unsigned char gain_reg = CR_RANGE(rangechan) +
1008 devpriv->range_correction;
1009
1010 if ((chan_reg == devpriv->old_chan_reg)
1011 && (gain_reg == devpriv->old_gain_reg))
1012 return; /* we can return, no change */
1013
1014 devpriv->old_chan_reg = chan_reg;
1015 devpriv->old_gain_reg = gain_reg;
1016
1017 if (devpriv->use_MPC) {
1018 if (devpriv->use_diff) {
1019 chan_reg = chan_reg | 0x30; /* DIFF inputs */
1020 } else {
1021 if (chan_reg & 0x80)
1022 /* SE inputs 8-15 */
1023 chan_reg = chan_reg | 0x20;
1024 else
1025 /* SE inputs 0-7 */
1026 chan_reg = chan_reg | 0x10;
1027 }
1028 }
1029
1030 outb(chan_reg, dev->iobase + PCL812_MUX); /* select channel */
1031 outb(gain_reg, dev->iobase + PCL812_GAIN); /* select gain */
1032
1033
1034 if (wait)
1035 /*
1036 * XXX this depends on selected range and can be very long for
1037 * some high gain ranges!
1038 */
1039 udelay(devpriv->max_812_ai_mode0_rangewait);
1040 }
1041
1042 /*
1043 ==============================================================================
1044 */
1045 static void start_pacer(struct comedi_device *dev, int mode,
1046 unsigned int divisor1, unsigned int divisor2)
1047 {
1048 outb(0xb4, dev->iobase + PCL812_CTRCTL);
1049 outb(0x74, dev->iobase + PCL812_CTRCTL);
1050 udelay(1);
1051
1052 if (mode == 1) {
1053 outb(divisor2 & 0xff, dev->iobase + PCL812_CTR2);
1054 outb((divisor2 >> 8) & 0xff, dev->iobase + PCL812_CTR2);
1055 outb(divisor1 & 0xff, dev->iobase + PCL812_CTR1);
1056 outb((divisor1 >> 8) & 0xff, dev->iobase + PCL812_CTR1);
1057 }
1058 }
1059
1060 /*
1061 ==============================================================================
1062 */
1063 static void free_resources(struct comedi_device *dev)
1064 {
1065 const struct pcl812_board *board = comedi_board(dev);
1066
1067 if (dev->private) {
1068 if (devpriv->dmabuf[0])
1069 free_pages(devpriv->dmabuf[0], devpriv->dmapages[0]);
1070 if (devpriv->dmabuf[1])
1071 free_pages(devpriv->dmabuf[1], devpriv->dmapages[1]);
1072 if (devpriv->dma)
1073 free_dma(devpriv->dma);
1074 }
1075 if (dev->irq)
1076 free_irq(dev->irq, dev);
1077 if (dev->iobase)
1078 release_region(dev->iobase, board->io_range);
1079 }
1080
1081 /*
1082 ==============================================================================
1083 */
1084 static int pcl812_ai_cancel(struct comedi_device *dev,
1085 struct comedi_subdevice *s)
1086 {
1087 if (devpriv->ai_dma)
1088 disable_dma(devpriv->dma);
1089 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
1090 /* Stop A/D */
1091 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
1092 start_pacer(dev, -1, 0, 0); /* stop 8254 */
1093 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
1094 return 0;
1095 }
1096
1097 /*
1098 ==============================================================================
1099 */
1100 static void pcl812_reset(struct comedi_device *dev)
1101 {
1102 const struct pcl812_board *board = comedi_board(dev);
1103
1104 outb(0, dev->iobase + PCL812_MUX);
1105 outb(0 + devpriv->range_correction, dev->iobase + PCL812_GAIN);
1106 devpriv->old_chan_reg = -1; /* invalidate chain/gain memory */
1107 devpriv->old_gain_reg = -1;
1108
1109 switch (board->board_type) {
1110 case boardPCL812PG:
1111 case boardPCL812:
1112 case boardACL8112:
1113 case boardACL8216:
1114 outb(0, dev->iobase + PCL812_DA2_LO);
1115 outb(0, dev->iobase + PCL812_DA2_HI);
1116 case boardA821:
1117 outb(0, dev->iobase + PCL812_DA1_LO);
1118 outb(0, dev->iobase + PCL812_DA1_HI);
1119 start_pacer(dev, -1, 0, 0); /* stop 8254 */
1120 outb(0, dev->iobase + PCL812_DO_HI);
1121 outb(0, dev->iobase + PCL812_DO_LO);
1122 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
1123 outb(0, dev->iobase + PCL812_CLRINT);
1124 break;
1125 case boardPCL813B:
1126 case boardPCL813:
1127 case boardISO813:
1128 case boardACL8113:
1129 udelay(5);
1130 break;
1131 }
1132 udelay(5);
1133 }
1134
1135 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1136 {
1137 const struct pcl812_board *board = comedi_board(dev);
1138 int ret, subdev;
1139 unsigned long iobase;
1140 unsigned int irq;
1141 unsigned int dma;
1142 unsigned long pages;
1143 struct comedi_subdevice *s;
1144 int n_subdevices;
1145
1146 iobase = it->options[0];
1147 printk(KERN_INFO "comedi%d: pcl812: board=%s, ioport=0x%03lx",
1148 dev->minor, board->name, iobase);
1149
1150 if (!request_region(iobase, board->io_range, "pcl812")) {
1151 printk("I/O port conflict\n");
1152 return -EIO;
1153 }
1154 dev->iobase = iobase;
1155
1156 ret = alloc_private(dev, sizeof(struct pcl812_private));
1157 if (ret < 0) {
1158 free_resources(dev);
1159 return ret; /* Can't alloc mem */
1160 }
1161
1162 dev->board_name = board->name;
1163
1164 irq = 0;
1165 if (board->IRQbits != 0) { /* board support IRQ */
1166 irq = it->options[1];
1167 if (irq) { /* we want to use IRQ */
1168 if (((1 << irq) & board->IRQbits) == 0) {
1169 printk
1170 (", IRQ %u is out of allowed range, "
1171 "DISABLING IT", irq);
1172 irq = 0; /* Bad IRQ */
1173 } else {
1174 if (request_irq
1175 (irq, interrupt_pcl812, 0, "pcl812", dev)) {
1176 printk
1177 (", unable to allocate IRQ %u, "
1178 "DISABLING IT", irq);
1179 irq = 0; /* Can't use IRQ */
1180 } else {
1181 printk(KERN_INFO ", irq=%u", irq);
1182 }
1183 }
1184 }
1185 }
1186
1187 dev->irq = irq;
1188
1189 dma = 0;
1190 devpriv->dma = dma;
1191 if (!dev->irq)
1192 goto no_dma; /* if we haven't IRQ, we can't use DMA */
1193 if (board->DMAbits != 0) { /* board support DMA */
1194 dma = it->options[2];
1195 if (((1 << dma) & board->DMAbits) == 0) {
1196 printk(", DMA is out of allowed range, FAIL!\n");
1197 return -EINVAL; /* Bad DMA */
1198 }
1199 ret = request_dma(dma, "pcl812");
1200 if (ret) {
1201 printk(KERN_ERR ", unable to allocate DMA %u, FAIL!\n",
1202 dma);
1203 return -EBUSY; /* DMA isn't free */
1204 }
1205 devpriv->dma = dma;
1206 printk(KERN_INFO ", dma=%u", dma);
1207 pages = 1; /* we want 8KB */
1208 devpriv->dmabuf[0] = __get_dma_pages(GFP_KERNEL, pages);
1209 if (!devpriv->dmabuf[0]) {
1210 printk(", unable to allocate DMA buffer, FAIL!\n");
1211 /*
1212 * maybe experiment with try_to_free_pages()
1213 * will help ....
1214 */
1215 free_resources(dev);
1216 return -EBUSY; /* no buffer :-( */
1217 }
1218 devpriv->dmapages[0] = pages;
1219 devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]);
1220 devpriv->hwdmasize[0] = PAGE_SIZE * (1 << pages);
1221 devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages);
1222 if (!devpriv->dmabuf[1]) {
1223 printk(KERN_ERR ", unable to allocate DMA buffer, FAIL!\n");
1224 free_resources(dev);
1225 return -EBUSY;
1226 }
1227 devpriv->dmapages[1] = pages;
1228 devpriv->hwdmaptr[1] = virt_to_bus((void *)devpriv->dmabuf[1]);
1229 devpriv->hwdmasize[1] = PAGE_SIZE * (1 << pages);
1230 }
1231 no_dma:
1232
1233 n_subdevices = 0;
1234 if (board->n_aichan > 0)
1235 n_subdevices++;
1236 if (board->n_aochan > 0)
1237 n_subdevices++;
1238 if (board->n_dichan > 0)
1239 n_subdevices++;
1240 if (board->n_dochan > 0)
1241 n_subdevices++;
1242
1243 ret = comedi_alloc_subdevices(dev, n_subdevices);
1244 if (ret) {
1245 free_resources(dev);
1246 return ret;
1247 }
1248
1249 subdev = 0;
1250
1251 /* analog input */
1252 if (board->n_aichan > 0) {
1253 s = &dev->subdevices[subdev];
1254 s->type = COMEDI_SUBD_AI;
1255 s->subdev_flags = SDF_READABLE;
1256 switch (board->board_type) {
1257 case boardA821:
1258 if (it->options[2] == 1) {
1259 s->n_chan = board->n_aichan_diff;
1260 s->subdev_flags |= SDF_DIFF;
1261 devpriv->use_diff = 1;
1262 } else {
1263 s->n_chan = board->n_aichan;
1264 s->subdev_flags |= SDF_GROUND;
1265 }
1266 break;
1267 case boardACL8112:
1268 case boardACL8216:
1269 if (it->options[4] == 1) {
1270 s->n_chan = board->n_aichan_diff;
1271 s->subdev_flags |= SDF_DIFF;
1272 devpriv->use_diff = 1;
1273 } else {
1274 s->n_chan = board->n_aichan;
1275 s->subdev_flags |= SDF_GROUND;
1276 }
1277 break;
1278 default:
1279 s->n_chan = board->n_aichan;
1280 s->subdev_flags |= SDF_GROUND;
1281 break;
1282 }
1283 s->maxdata = board->ai_maxdata;
1284 s->len_chanlist = MAX_CHANLIST_LEN;
1285 s->range_table = board->rangelist_ai;
1286 if (board->board_type == boardACL8216)
1287 s->insn_read = acl8216_ai_insn_read;
1288 else
1289 s->insn_read = pcl812_ai_insn_read;
1290
1291 devpriv->use_MPC = board->haveMPC508;
1292 s->cancel = pcl812_ai_cancel;
1293 if (dev->irq) {
1294 dev->read_subdev = s;
1295 s->subdev_flags |= SDF_CMD_READ;
1296 s->do_cmdtest = pcl812_ai_cmdtest;
1297 s->do_cmd = pcl812_ai_cmd;
1298 s->poll = pcl812_ai_poll;
1299 }
1300 switch (board->board_type) {
1301 case boardPCL812PG:
1302 if (it->options[4] == 1)
1303 s->range_table = &range_pcl812pg2_ai;
1304 break;
1305 case boardPCL812:
1306 switch (it->options[4]) {
1307 case 0:
1308 s->range_table = &range_bipolar10;
1309 break;
1310 case 1:
1311 s->range_table = &range_bipolar5;
1312 break;
1313 case 2:
1314 s->range_table = &range_bipolar2_5;
1315 break;
1316 case 3:
1317 s->range_table = &range812_bipolar1_25;
1318 break;
1319 case 4:
1320 s->range_table = &range812_bipolar0_625;
1321 break;
1322 case 5:
1323 s->range_table = &range812_bipolar0_3125;
1324 break;
1325 default:
1326 s->range_table = &range_bipolar10;
1327 break;
1328 printk
1329 (", incorrect range number %d, changing "
1330 "to 0 (+/-10V)", it->options[4]);
1331 break;
1332 }
1333 break;
1334 break;
1335 case boardPCL813B:
1336 if (it->options[1] == 1)
1337 s->range_table = &range_pcl813b2_ai;
1338 break;
1339 case boardISO813:
1340 switch (it->options[1]) {
1341 case 0:
1342 s->range_table = &range_iso813_1_ai;
1343 break;
1344 case 1:
1345 s->range_table = &range_iso813_1_2_ai;
1346 break;
1347 case 2:
1348 s->range_table = &range_iso813_2_ai;
1349 devpriv->range_correction = 1;
1350 break;
1351 case 3:
1352 s->range_table = &range_iso813_2_2_ai;
1353 devpriv->range_correction = 1;
1354 break;
1355 default:
1356 s->range_table = &range_iso813_1_ai;
1357 break;
1358 printk
1359 (", incorrect range number %d, "
1360 "changing to 0 ", it->options[1]);
1361 break;
1362 }
1363 break;
1364 case boardACL8113:
1365 switch (it->options[1]) {
1366 case 0:
1367 s->range_table = &range_acl8113_1_ai;
1368 break;
1369 case 1:
1370 s->range_table = &range_acl8113_1_2_ai;
1371 break;
1372 case 2:
1373 s->range_table = &range_acl8113_2_ai;
1374 devpriv->range_correction = 1;
1375 break;
1376 case 3:
1377 s->range_table = &range_acl8113_2_2_ai;
1378 devpriv->range_correction = 1;
1379 break;
1380 default:
1381 s->range_table = &range_acl8113_1_ai;
1382 break;
1383 printk
1384 (", incorrect range number %d, "
1385 "changing to 0 ", it->options[1]);
1386 break;
1387 }
1388 break;
1389 }
1390 subdev++;
1391 }
1392
1393 /* analog output */
1394 if (board->n_aochan > 0) {
1395 s = &dev->subdevices[subdev];
1396 s->type = COMEDI_SUBD_AO;
1397 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
1398 s->n_chan = board->n_aochan;
1399 s->maxdata = 0xfff;
1400 s->len_chanlist = 1;
1401 s->range_table = board->rangelist_ao;
1402 s->insn_read = pcl812_ao_insn_read;
1403 s->insn_write = pcl812_ao_insn_write;
1404 switch (board->board_type) {
1405 case boardA821:
1406 if (it->options[3] == 1)
1407 s->range_table = &range_unipolar10;
1408 break;
1409 case boardPCL812:
1410 case boardACL8112:
1411 case boardPCL812PG:
1412 case boardACL8216:
1413 if (it->options[5] == 1)
1414 s->range_table = &range_unipolar10;
1415 if (it->options[5] == 2)
1416 s->range_table = &range_unknown;
1417 break;
1418 }
1419 subdev++;
1420 }
1421
1422 /* digital input */
1423 if (board->n_dichan > 0) {
1424 s = &dev->subdevices[subdev];
1425 s->type = COMEDI_SUBD_DI;
1426 s->subdev_flags = SDF_READABLE;
1427 s->n_chan = board->n_dichan;
1428 s->maxdata = 1;
1429 s->len_chanlist = board->n_dichan;
1430 s->range_table = &range_digital;
1431 s->insn_bits = pcl812_di_insn_bits;
1432 subdev++;
1433 }
1434
1435 /* digital output */
1436 if (board->n_dochan > 0) {
1437 s = &dev->subdevices[subdev];
1438 s->type = COMEDI_SUBD_DO;
1439 s->subdev_flags = SDF_WRITABLE;
1440 s->n_chan = board->n_dochan;
1441 s->maxdata = 1;
1442 s->len_chanlist = board->n_dochan;
1443 s->range_table = &range_digital;
1444 s->insn_bits = pcl812_do_insn_bits;
1445 subdev++;
1446 }
1447
1448 switch (board->board_type) {
1449 case boardACL8216:
1450 devpriv->ai_is16b = 1;
1451 case boardPCL812PG:
1452 case boardPCL812:
1453 case boardACL8112:
1454 devpriv->max_812_ai_mode0_rangewait = 1;
1455 if (it->options[3] > 0)
1456 /* we use external trigger */
1457 devpriv->use_ext_trg = 1;
1458 case boardA821:
1459 devpriv->max_812_ai_mode0_rangewait = 1;
1460 devpriv->mode_reg_int = (irq << 4) & 0xf0;
1461 break;
1462 case boardPCL813B:
1463 case boardPCL813:
1464 case boardISO813:
1465 case boardACL8113:
1466 /* maybe there must by greatest timeout */
1467 devpriv->max_812_ai_mode0_rangewait = 5;
1468 break;
1469 }
1470
1471 printk(KERN_INFO "\n");
1472 devpriv->valid = 1;
1473
1474 pcl812_reset(dev);
1475
1476 return 0;
1477 }
1478
1479 static void pcl812_detach(struct comedi_device *dev)
1480 {
1481 free_resources(dev);
1482 }
1483
1484 static const struct pcl812_board boardtypes[] = {
1485 {"pcl812", boardPCL812, 16, 0, 2, 16, 16, 0x0fff,
1486 33000, 500, &range_bipolar10, &range_unipolar5,
1487 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1488 {"pcl812pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff,
1489 33000, 500, &range_pcl812pg_ai, &range_unipolar5,
1490 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1491 {"acl8112pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff,
1492 10000, 500, &range_pcl812pg_ai, &range_unipolar5,
1493 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1494 {"acl8112dg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1495 10000, 500, &range_acl8112dg_ai, &range_unipolar5,
1496 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1497 {"acl8112hg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1498 10000, 500, &range_acl8112hg_ai, &range_unipolar5,
1499 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1500 {"a821pgl", boardA821, 16, 8, 1, 16, 16, 0x0fff,
1501 10000, 500, &range_pcl813b_ai, &range_unipolar5,
1502 0x000c, 0x00, PCLx1x_IORANGE, 0},
1503 {"a821pglnda", boardA821, 16, 8, 0, 0, 0, 0x0fff,
1504 10000, 500, &range_pcl813b_ai, NULL,
1505 0x000c, 0x00, PCLx1x_IORANGE, 0},
1506 {"a821pgh", boardA821, 16, 8, 1, 16, 16, 0x0fff,
1507 10000, 500, &range_a821pgh_ai, &range_unipolar5,
1508 0x000c, 0x00, PCLx1x_IORANGE, 0},
1509 {"a822pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1510 10000, 500, &range_acl8112dg_ai, &range_unipolar5,
1511 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1512 {"a822pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1513 10000, 500, &range_acl8112hg_ai, &range_unipolar5,
1514 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1515 {"a823pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1516 8000, 500, &range_acl8112dg_ai, &range_unipolar5,
1517 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1518 {"a823pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1519 8000, 500, &range_acl8112hg_ai, &range_unipolar5,
1520 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1521 {"pcl813", boardPCL813, 32, 0, 0, 0, 0, 0x0fff,
1522 0, 0, &range_pcl813b_ai, NULL,
1523 0x0000, 0x00, PCLx1x_IORANGE, 0},
1524 {"pcl813b", boardPCL813B, 32, 0, 0, 0, 0, 0x0fff,
1525 0, 0, &range_pcl813b_ai, NULL,
1526 0x0000, 0x00, PCLx1x_IORANGE, 0},
1527 {"acl8113", boardACL8113, 32, 0, 0, 0, 0, 0x0fff,
1528 0, 0, &range_acl8113_1_ai, NULL,
1529 0x0000, 0x00, PCLx1x_IORANGE, 0},
1530 {"iso813", boardISO813, 32, 0, 0, 0, 0, 0x0fff,
1531 0, 0, &range_iso813_1_ai, NULL,
1532 0x0000, 0x00, PCLx1x_IORANGE, 0},
1533 {"acl8216", boardACL8216, 16, 8, 2, 16, 16, 0xffff,
1534 10000, 500, &range_pcl813b2_ai, &range_unipolar5,
1535 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1536 {"a826pg", boardACL8216, 16, 8, 2, 16, 16, 0xffff,
1537 10000, 500, &range_pcl813b2_ai, &range_unipolar5,
1538 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1539 };
1540
1541 static struct comedi_driver pcl812_driver = {
1542 .driver_name = "pcl812",
1543 .module = THIS_MODULE,
1544 .attach = pcl812_attach,
1545 .detach = pcl812_detach,
1546 .board_name = &boardtypes[0].name,
1547 .num_names = ARRAY_SIZE(boardtypes),
1548 .offset = sizeof(struct pcl812_board),
1549 };
1550 module_comedi_driver(pcl812_driver);
1551
1552 MODULE_AUTHOR("Comedi http://www.comedi.org");
1553 MODULE_DESCRIPTION("Comedi low-level driver");
1554 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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