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Merge branch 'for-3.11' of git://linux-nfs.org/~bfields/linux
[linux-2.6.git] / drivers / staging / comedi / drivers / pcl812.c
blobcd02786702c874a0a11b3068ba125f8babe9975e
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 /*
373 ==============================================================================
374 */
375 static void start_pacer(struct comedi_device *dev, int mode,
376 unsigned int divisor1, unsigned int divisor2);
377 static void setup_range_channel(struct comedi_device *dev,
378 struct comedi_subdevice *s,
379 unsigned int rangechan, char wait);
380 static int pcl812_ai_cancel(struct comedi_device *dev,
381 struct comedi_subdevice *s);
382 /*
383 ==============================================================================
384 */
385 static int pcl812_ai_insn_read(struct comedi_device *dev,
386 struct comedi_subdevice *s,
387 struct comedi_insn *insn, unsigned int *data)
388 {
389 struct pcl812_private *devpriv = dev->private;
390 int n;
391 int timeout, hi;
392
393 /* select software trigger */
394 outb(devpriv->mode_reg_int | 1, dev->iobase + PCL812_MODE);
395 /* select channel and renge */
396 setup_range_channel(dev, s, insn->chanspec, 1);
397 for (n = 0; n < insn->n; n++) {
398 /* start conversion */
399 outb(255, dev->iobase + PCL812_SOFTTRIG);
400 udelay(5);
401 timeout = 50; /* wait max 50us, it must finish under 33us */
402 while (timeout--) {
403 hi = inb(dev->iobase + PCL812_AD_HI);
404 if (!(hi & PCL812_DRDY))
405 goto conv_finish;
406 udelay(1);
407 }
408 printk
409 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
410 dev->minor, dev->board_name, dev->iobase);
411 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
412 return -ETIME;
413
414 conv_finish:
415 data[n] = ((hi & 0xf) << 8) | inb(dev->iobase + PCL812_AD_LO);
416 }
417 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
418 return n;
419 }
420
421 /*
422 ==============================================================================
423 */
424 static int acl8216_ai_insn_read(struct comedi_device *dev,
425 struct comedi_subdevice *s,
426 struct comedi_insn *insn, unsigned int *data)
427 {
428 int n;
429 int timeout;
430
431 /* select software trigger */
432 outb(1, dev->iobase + PCL812_MODE);
433 /* select channel and renge */
434 setup_range_channel(dev, s, insn->chanspec, 1);
435 for (n = 0; n < insn->n; n++) {
436 /* start conversion */
437 outb(255, dev->iobase + PCL812_SOFTTRIG);
438 udelay(5);
439 timeout = 50; /* wait max 50us, it must finish under 33us */
440 while (timeout--) {
441 if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY))
442 goto conv_finish;
443 udelay(1);
444 }
445 printk
446 ("comedi%d: pcl812: (%s at 0x%lx) A/D insn read timeout\n",
447 dev->minor, dev->board_name, dev->iobase);
448 outb(0, dev->iobase + PCL812_MODE);
449 return -ETIME;
450
451 conv_finish:
452 data[n] =
453 (inb(dev->iobase +
454 PCL812_AD_HI) << 8) | inb(dev->iobase + PCL812_AD_LO);
455 }
456 outb(0, dev->iobase + PCL812_MODE);
457 return n;
458 }
459
460 /*
461 ==============================================================================
462 */
463 static int pcl812_ao_insn_write(struct comedi_device *dev,
464 struct comedi_subdevice *s,
465 struct comedi_insn *insn, unsigned int *data)
466 {
467 struct pcl812_private *devpriv = dev->private;
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 struct pcl812_private *devpriv = dev->private;
490 int chan = CR_CHAN(insn->chanspec);
491 int i;
492
493 for (i = 0; i < insn->n; i++)
494 data[i] = devpriv->ao_readback[chan];
495
496 return i;
497 }
498
499 /*
500 ==============================================================================
501 */
502 static int pcl812_di_insn_bits(struct comedi_device *dev,
503 struct comedi_subdevice *s,
504 struct comedi_insn *insn, unsigned int *data)
505 {
506 data[1] = inb(dev->iobase + PCL812_DI_LO);
507 data[1] |= inb(dev->iobase + PCL812_DI_HI) << 8;
508
509 return insn->n;
510 }
511
512 /*
513 ==============================================================================
514 */
515 static int pcl812_do_insn_bits(struct comedi_device *dev,
516 struct comedi_subdevice *s,
517 struct comedi_insn *insn, unsigned int *data)
518 {
519 if (data[0]) {
520 s->state &= ~data[0];
521 s->state |= data[0] & data[1];
522 outb(s->state & 0xff, dev->iobase + PCL812_DO_LO);
523 outb((s->state >> 8), dev->iobase + PCL812_DO_HI);
524 }
525 data[1] = s->state;
526
527 return insn->n;
528 }
529
530 /*
531 ==============================================================================
532 */
533 static int pcl812_ai_cmdtest(struct comedi_device *dev,
534 struct comedi_subdevice *s, struct comedi_cmd *cmd)
535 {
536 const struct pcl812_board *board = comedi_board(dev);
537 struct pcl812_private *devpriv = dev->private;
538 int err = 0;
539 unsigned int flags;
540 int tmp, divisor1, divisor2;
541
542 /* Step 1 : check if triggers are trivially valid */
543
544 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW);
545 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
546
547 if (devpriv->use_ext_trg)
548 flags = TRIG_EXT;
549 else
550 flags = TRIG_TIMER;
551 err |= cfc_check_trigger_src(&cmd->convert_src, flags);
552
553 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
554 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
555
556 if (err)
557 return 1;
558
559 /* Step 2a : make sure trigger sources are unique */
560
561 err |= cfc_check_trigger_is_unique(cmd->stop_src);
562
563 /* Step 2b : and mutually compatible */
564
565 if (err)
566 return 2;
567
568 /* Step 3: check if arguments are trivially valid */
569
570 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
571 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
572
573 if (cmd->convert_src == TRIG_TIMER)
574 err |= cfc_check_trigger_arg_min(&cmd->convert_arg,
575 board->ai_ns_min);
576 else /* TRIG_EXT */
577 err |= cfc_check_trigger_arg_is(&cmd->convert_arg, 0);
578
579 err |= cfc_check_trigger_arg_min(&cmd->chanlist_len, 1);
580 err |= cfc_check_trigger_arg_max(&cmd->chanlist_len, MAX_CHANLIST_LEN);
581 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
582
583 if (cmd->stop_src == TRIG_COUNT)
584 err |= cfc_check_trigger_arg_min(&cmd->stop_arg, 1);
585 else /* TRIG_NONE */
586 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
587
588 if (err)
589 return 3;
590
591 /* step 4: fix up any arguments */
592
593 if (cmd->convert_src == TRIG_TIMER) {
594 tmp = cmd->convert_arg;
595 i8253_cascade_ns_to_timer(board->i8254_osc_base, &divisor1,
596 &divisor2, &cmd->convert_arg,
597 cmd->flags & TRIG_ROUND_MASK);
598 if (cmd->convert_arg < board->ai_ns_min)
599 cmd->convert_arg = board->ai_ns_min;
600 if (tmp != cmd->convert_arg)
601 err++;
602 }
603
604 if (err)
605 return 4;
606
607 return 0;
608 }
609
610 /*
611 ==============================================================================
612 */
613 static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
614 {
615 const struct pcl812_board *board = comedi_board(dev);
616 struct pcl812_private *devpriv = dev->private;
617 unsigned int divisor1 = 0, divisor2 = 0, i, dma_flags, bytes;
618 struct comedi_cmd *cmd = &s->async->cmd;
619
620 if (cmd->start_src != TRIG_NOW)
621 return -EINVAL;
622 if (cmd->scan_begin_src != TRIG_FOLLOW)
623 return -EINVAL;
624 if (devpriv->use_ext_trg) {
625 if (cmd->convert_src != TRIG_EXT)
626 return -EINVAL;
627 } else {
628 if (cmd->convert_src != TRIG_TIMER)
629 return -EINVAL;
630 }
631 if (cmd->scan_end_src != TRIG_COUNT)
632 return -EINVAL;
633 if (cmd->scan_end_arg != cmd->chanlist_len)
634 return -EINVAL;
635 if (cmd->chanlist_len > MAX_CHANLIST_LEN)
636 return -EINVAL;
637
638 if (cmd->convert_src == TRIG_TIMER) {
639 if (cmd->convert_arg < board->ai_ns_min)
640 cmd->convert_arg = board->ai_ns_min;
641 i8253_cascade_ns_to_timer(board->i8254_osc_base,
642 &divisor1, &divisor2,
643 &cmd->convert_arg,
644 cmd->flags & TRIG_ROUND_MASK);
645 }
646
647 start_pacer(dev, -1, 0, 0); /* stop pacer */
648
649 devpriv->ai_n_chan = cmd->chanlist_len;
650 memcpy(devpriv->ai_chanlist, cmd->chanlist,
651 sizeof(unsigned int) * cmd->scan_end_arg);
652 /* select first channel and range */
653 setup_range_channel(dev, s, devpriv->ai_chanlist[0], 1);
654
655 if (devpriv->dma) { /* check if we can use DMA transfer */
656 devpriv->ai_dma = 1;
657 for (i = 1; i < devpriv->ai_n_chan; i++)
658 if (devpriv->ai_chanlist[0] != devpriv->ai_chanlist[i]) {
659 /* we cann't use DMA :-( */
660 devpriv->ai_dma = 0;
661 break;
662 }
663 } else
664 devpriv->ai_dma = 0;
665
666 devpriv->ai_flags = cmd->flags;
667 devpriv->ai_data_len = s->async->prealloc_bufsz;
668 devpriv->ai_data = s->async->prealloc_buf;
669 if (cmd->stop_src == TRIG_COUNT) {
670 devpriv->ai_scans = cmd->stop_arg;
671 devpriv->ai_neverending = 0;
672 } else {
673 devpriv->ai_scans = 0;
674 devpriv->ai_neverending = 1;
675 }
676
677 devpriv->ai_act_scan = 0;
678 devpriv->ai_poll_ptr = 0;
679 s->async->cur_chan = 0;
680
681 /* don't we want wake up every scan? */
682 if ((devpriv->ai_flags & TRIG_WAKE_EOS)) {
683 devpriv->ai_eos = 1;
684
685 /* DMA is useless for this situation */
686 if (devpriv->ai_n_chan == 1)
687 devpriv->ai_dma = 0;
688 }
689
690 if (devpriv->ai_dma) {
691 /* we use EOS, so adapt DMA buffer to one scan */
692 if (devpriv->ai_eos) {
693 devpriv->dmabytestomove[0] =
694 devpriv->ai_n_chan * sizeof(short);
695 devpriv->dmabytestomove[1] =
696 devpriv->ai_n_chan * sizeof(short);
697 devpriv->dma_runs_to_end = 1;
698 } else {
699 devpriv->dmabytestomove[0] = devpriv->hwdmasize[0];
700 devpriv->dmabytestomove[1] = devpriv->hwdmasize[1];
701 if (devpriv->ai_data_len < devpriv->hwdmasize[0])
702 devpriv->dmabytestomove[0] =
703 devpriv->ai_data_len;
704 if (devpriv->ai_data_len < devpriv->hwdmasize[1])
705 devpriv->dmabytestomove[1] =
706 devpriv->ai_data_len;
707 if (devpriv->ai_neverending) {
708 devpriv->dma_runs_to_end = 1;
709 } else {
710 /* how many samples we must transfer? */
711 bytes = devpriv->ai_n_chan *
712 devpriv->ai_scans * sizeof(short);
713
714 /* how many DMA pages we must fill */
715 devpriv->dma_runs_to_end =
716 bytes / devpriv->dmabytestomove[0];
717
718 /* on last dma transfer must be moved */
719 devpriv->last_dma_run =
720 bytes % devpriv->dmabytestomove[0];
721 if (devpriv->dma_runs_to_end == 0)
722 devpriv->dmabytestomove[0] =
723 devpriv->last_dma_run;
724 devpriv->dma_runs_to_end--;
725 }
726 }
727 if (devpriv->dmabytestomove[0] > devpriv->hwdmasize[0]) {
728 devpriv->dmabytestomove[0] = devpriv->hwdmasize[0];
729 devpriv->ai_eos = 0;
730 }
731 if (devpriv->dmabytestomove[1] > devpriv->hwdmasize[1]) {
732 devpriv->dmabytestomove[1] = devpriv->hwdmasize[1];
733 devpriv->ai_eos = 0;
734 }
735 devpriv->next_dma_buf = 0;
736 set_dma_mode(devpriv->dma, DMA_MODE_READ);
737 dma_flags = claim_dma_lock();
738 clear_dma_ff(devpriv->dma);
739 set_dma_addr(devpriv->dma, devpriv->hwdmaptr[0]);
740 set_dma_count(devpriv->dma, devpriv->dmabytestomove[0]);
741 release_dma_lock(dma_flags);
742 enable_dma(devpriv->dma);
743 }
744
745 switch (cmd->convert_src) {
746 case TRIG_TIMER:
747 start_pacer(dev, 1, divisor1, divisor2);
748 break;
749 }
750
751 if (devpriv->ai_dma) /* let's go! */
752 outb(devpriv->mode_reg_int | 2, dev->iobase + PCL812_MODE);
753 else /* let's go! */
754 outb(devpriv->mode_reg_int | 6, dev->iobase + PCL812_MODE);
755
756 return 0;
757 }
758
759 /*
760 ==============================================================================
761 */
762 static irqreturn_t interrupt_pcl812_ai_int(int irq, void *d)
763 {
764 char err = 1;
765 unsigned int mask, timeout;
766 struct comedi_device *dev = d;
767 struct pcl812_private *devpriv = dev->private;
768 struct comedi_subdevice *s = &dev->subdevices[0];
769 unsigned int next_chan;
770
771 s->async->events = 0;
772
773 timeout = 50; /* wait max 50us, it must finish under 33us */
774 if (devpriv->ai_is16b) {
775 mask = 0xffff;
776 while (timeout--) {
777 if (!(inb(dev->iobase + ACL8216_STATUS) & ACL8216_DRDY)) {
778 err = 0;
779 break;
780 }
781 udelay(1);
782 }
783 } else {
784 mask = 0x0fff;
785 while (timeout--) {
786 if (!(inb(dev->iobase + PCL812_AD_HI) & PCL812_DRDY)) {
787 err = 0;
788 break;
789 }
790 udelay(1);
791 }
792 }
793
794 if (err) {
795 printk
796 ("comedi%d: pcl812: (%s at 0x%lx) "
797 "A/D cmd IRQ without DRDY!\n",
798 dev->minor, dev->board_name, dev->iobase);
799 pcl812_ai_cancel(dev, s);
800 s->async->events |= COMEDI_CB_EOA | COMEDI_CB_ERROR;
801 comedi_event(dev, s);
802 return IRQ_HANDLED;
803 }
804
805 comedi_buf_put(s->async,
806 ((inb(dev->iobase + PCL812_AD_HI) << 8) |
807 inb(dev->iobase + PCL812_AD_LO)) & mask);
808
809 /* Set up next channel. Added by abbotti 2010-01-20, but untested. */
810 next_chan = s->async->cur_chan + 1;
811 if (next_chan >= devpriv->ai_n_chan)
812 next_chan = 0;
813 if (devpriv->ai_chanlist[s->async->cur_chan] !=
814 devpriv->ai_chanlist[next_chan])
815 setup_range_channel(dev, s, devpriv->ai_chanlist[next_chan], 0);
816
817 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
818
819 s->async->cur_chan = next_chan;
820 if (next_chan == 0) { /* one scan done */
821 devpriv->ai_act_scan++;
822 if (!(devpriv->ai_neverending))
823 /* all data sampled */
824 if (devpriv->ai_act_scan >= devpriv->ai_scans) {
825 pcl812_ai_cancel(dev, s);
826 s->async->events |= COMEDI_CB_EOA;
827 }
828 }
829
830 comedi_event(dev, s);
831 return IRQ_HANDLED;
832 }
833
834 /*
835 ==============================================================================
836 */
837 static void transfer_from_dma_buf(struct comedi_device *dev,
838 struct comedi_subdevice *s, short *ptr,
839 unsigned int bufptr, unsigned int len)
840 {
841 struct pcl812_private *devpriv = dev->private;
842 unsigned int i;
843
844 s->async->events = 0;
845 for (i = len; i; i--) {
846 /* get one sample */
847 comedi_buf_put(s->async, ptr[bufptr++]);
848
849 s->async->cur_chan++;
850 if (s->async->cur_chan >= devpriv->ai_n_chan) {
851 s->async->cur_chan = 0;
852 devpriv->ai_act_scan++;
853 if (!devpriv->ai_neverending)
854 /* all data sampled */
855 if (devpriv->ai_act_scan >= devpriv->ai_scans) {
856 pcl812_ai_cancel(dev, s);
857 s->async->events |= COMEDI_CB_EOA;
858 break;
859 }
860 }
861 }
862
863 comedi_event(dev, s);
864 }
865
866 /*
867 ==============================================================================
868 */
869 static irqreturn_t interrupt_pcl812_ai_dma(int irq, void *d)
870 {
871 struct comedi_device *dev = d;
872 struct pcl812_private *devpriv = dev->private;
873 struct comedi_subdevice *s = &dev->subdevices[0];
874 unsigned long dma_flags;
875 int len, bufptr;
876 short *ptr;
877
878 ptr = (short *)devpriv->dmabuf[devpriv->next_dma_buf];
879 len = (devpriv->dmabytestomove[devpriv->next_dma_buf] >> 1) -
880 devpriv->ai_poll_ptr;
881
882 devpriv->next_dma_buf = 1 - devpriv->next_dma_buf;
883 disable_dma(devpriv->dma);
884 set_dma_mode(devpriv->dma, DMA_MODE_READ);
885 dma_flags = claim_dma_lock();
886 set_dma_addr(devpriv->dma, devpriv->hwdmaptr[devpriv->next_dma_buf]);
887 if (devpriv->ai_eos) {
888 set_dma_count(devpriv->dma,
889 devpriv->dmabytestomove[devpriv->next_dma_buf]);
890 } else {
891 if (devpriv->dma_runs_to_end) {
892 set_dma_count(devpriv->dma,
893 devpriv->dmabytestomove[devpriv->
894 next_dma_buf]);
895 } else {
896 set_dma_count(devpriv->dma, devpriv->last_dma_run);
897 }
898 devpriv->dma_runs_to_end--;
899 }
900 release_dma_lock(dma_flags);
901 enable_dma(devpriv->dma);
902
903 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
904
905 bufptr = devpriv->ai_poll_ptr;
906 devpriv->ai_poll_ptr = 0;
907
908 transfer_from_dma_buf(dev, s, ptr, bufptr, len);
909
910 return IRQ_HANDLED;
911 }
912
913 /*
914 ==============================================================================
915 */
916 static irqreturn_t interrupt_pcl812(int irq, void *d)
917 {
918 struct comedi_device *dev = d;
919 struct pcl812_private *devpriv = dev->private;
920
921 if (!dev->attached) {
922 comedi_error(dev, "spurious interrupt");
923 return IRQ_HANDLED;
924 }
925 if (devpriv->ai_dma)
926 return interrupt_pcl812_ai_dma(irq, d);
927 else
928 return interrupt_pcl812_ai_int(irq, d);
929 }
930
931 /*
932 ==============================================================================
933 */
934 static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
935 {
936 struct pcl812_private *devpriv = dev->private;
937 unsigned long flags;
938 unsigned int top1, top2, i;
939
940 if (!devpriv->ai_dma)
941 return 0; /* poll is valid only for DMA transfer */
942
943 spin_lock_irqsave(&dev->spinlock, flags);
944
945 for (i = 0; i < 10; i++) {
946 /* where is now DMA */
947 top1 = get_dma_residue(devpriv->ai_dma);
948 top2 = get_dma_residue(devpriv->ai_dma);
949 if (top1 == top2)
950 break;
951 }
952
953 if (top1 != top2) {
954 spin_unlock_irqrestore(&dev->spinlock, flags);
955 return 0;
956 }
957 /* where is now DMA in buffer */
958 top1 = devpriv->dmabytestomove[1 - devpriv->next_dma_buf] - top1;
959 top1 >>= 1; /* sample position */
960 top2 = top1 - devpriv->ai_poll_ptr;
961 if (top2 < 1) { /* no new samples */
962 spin_unlock_irqrestore(&dev->spinlock, flags);
963 return 0;
964 }
965
966 transfer_from_dma_buf(dev, s,
967 (void *)devpriv->dmabuf[1 -
968 devpriv->next_dma_buf],
969 devpriv->ai_poll_ptr, top2);
970
971 devpriv->ai_poll_ptr = top1; /* new buffer position */
972
973 spin_unlock_irqrestore(&dev->spinlock, flags);
974
975 return s->async->buf_write_count - s->async->buf_read_count;
976 }
977
978 /*
979 ==============================================================================
980 */
981 static void setup_range_channel(struct comedi_device *dev,
982 struct comedi_subdevice *s,
983 unsigned int rangechan, char wait)
984 {
985 struct pcl812_private *devpriv = dev->private;
986 unsigned char chan_reg = CR_CHAN(rangechan); /* normal board */
987 /* gain index */
988 unsigned char gain_reg = CR_RANGE(rangechan) +
989 devpriv->range_correction;
990
991 if ((chan_reg == devpriv->old_chan_reg)
992 && (gain_reg == devpriv->old_gain_reg))
993 return; /* we can return, no change */
994
995 devpriv->old_chan_reg = chan_reg;
996 devpriv->old_gain_reg = gain_reg;
997
998 if (devpriv->use_MPC) {
999 if (devpriv->use_diff) {
1000 chan_reg = chan_reg | 0x30; /* DIFF inputs */
1001 } else {
1002 if (chan_reg & 0x80)
1003 /* SE inputs 8-15 */
1004 chan_reg = chan_reg | 0x20;
1005 else
1006 /* SE inputs 0-7 */
1007 chan_reg = chan_reg | 0x10;
1008 }
1009 }
1010
1011 outb(chan_reg, dev->iobase + PCL812_MUX); /* select channel */
1012 outb(gain_reg, dev->iobase + PCL812_GAIN); /* select gain */
1013
1014
1015 if (wait)
1016 /*
1017 * XXX this depends on selected range and can be very long for
1018 * some high gain ranges!
1019 */
1020 udelay(devpriv->max_812_ai_mode0_rangewait);
1021 }
1022
1023 /*
1024 ==============================================================================
1025 */
1026 static void start_pacer(struct comedi_device *dev, int mode,
1027 unsigned int divisor1, unsigned int divisor2)
1028 {
1029 outb(0xb4, dev->iobase + PCL812_CTRCTL);
1030 outb(0x74, dev->iobase + PCL812_CTRCTL);
1031 udelay(1);
1032
1033 if (mode == 1) {
1034 outb(divisor2 & 0xff, dev->iobase + PCL812_CTR2);
1035 outb((divisor2 >> 8) & 0xff, dev->iobase + PCL812_CTR2);
1036 outb(divisor1 & 0xff, dev->iobase + PCL812_CTR1);
1037 outb((divisor1 >> 8) & 0xff, dev->iobase + PCL812_CTR1);
1038 }
1039 }
1040
1041 /*
1042 ==============================================================================
1043 */
1044 static int pcl812_ai_cancel(struct comedi_device *dev,
1045 struct comedi_subdevice *s)
1046 {
1047 struct pcl812_private *devpriv = dev->private;
1048
1049 if (devpriv->ai_dma)
1050 disable_dma(devpriv->dma);
1051 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
1052 /* Stop A/D */
1053 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
1054 start_pacer(dev, -1, 0, 0); /* stop 8254 */
1055 outb(0, dev->iobase + PCL812_CLRINT); /* clear INT request */
1056 return 0;
1057 }
1058
1059 /*
1060 ==============================================================================
1061 */
1062 static void pcl812_reset(struct comedi_device *dev)
1063 {
1064 const struct pcl812_board *board = comedi_board(dev);
1065 struct pcl812_private *devpriv = dev->private;
1066
1067 outb(0, dev->iobase + PCL812_MUX);
1068 outb(0 + devpriv->range_correction, dev->iobase + PCL812_GAIN);
1069 devpriv->old_chan_reg = -1; /* invalidate chain/gain memory */
1070 devpriv->old_gain_reg = -1;
1071
1072 switch (board->board_type) {
1073 case boardPCL812PG:
1074 case boardPCL812:
1075 case boardACL8112:
1076 case boardACL8216:
1077 outb(0, dev->iobase + PCL812_DA2_LO);
1078 outb(0, dev->iobase + PCL812_DA2_HI);
1079 case boardA821:
1080 outb(0, dev->iobase + PCL812_DA1_LO);
1081 outb(0, dev->iobase + PCL812_DA1_HI);
1082 start_pacer(dev, -1, 0, 0); /* stop 8254 */
1083 outb(0, dev->iobase + PCL812_DO_HI);
1084 outb(0, dev->iobase + PCL812_DO_LO);
1085 outb(devpriv->mode_reg_int | 0, dev->iobase + PCL812_MODE);
1086 outb(0, dev->iobase + PCL812_CLRINT);
1087 break;
1088 case boardPCL813B:
1089 case boardPCL813:
1090 case boardISO813:
1091 case boardACL8113:
1092 udelay(5);
1093 break;
1094 }
1095 udelay(5);
1096 }
1097
1098 static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1099 {
1100 const struct pcl812_board *board = comedi_board(dev);
1101 struct pcl812_private *devpriv;
1102 int ret, subdev;
1103 unsigned int irq;
1104 unsigned int dma;
1105 unsigned long pages;
1106 struct comedi_subdevice *s;
1107 int n_subdevices;
1108
1109 ret = comedi_request_region(dev, it->options[0], board->io_range);
1110 if (ret)
1111 return ret;
1112
1113 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
1114 if (!devpriv)
1115 return -ENOMEM;
1116 dev->private = devpriv;
1117
1118 irq = 0;
1119 if (board->IRQbits != 0) { /* board support IRQ */
1120 irq = it->options[1];
1121 if (irq) { /* we want to use IRQ */
1122 if (((1 << irq) & board->IRQbits) == 0) {
1123 printk
1124 (", IRQ %u is out of allowed range, "
1125 "DISABLING IT", irq);
1126 irq = 0; /* Bad IRQ */
1127 } else {
1128 if (request_irq(irq, interrupt_pcl812, 0,
1129 dev->board_name, dev)) {
1130 printk
1131 (", unable to allocate IRQ %u, "
1132 "DISABLING IT", irq);
1133 irq = 0; /* Can't use IRQ */
1134 } else {
1135 printk(KERN_INFO ", irq=%u", irq);
1136 }
1137 }
1138 }
1139 }
1140
1141 dev->irq = irq;
1142
1143 dma = 0;
1144 devpriv->dma = dma;
1145 if (!dev->irq)
1146 goto no_dma; /* if we haven't IRQ, we can't use DMA */
1147 if (board->DMAbits != 0) { /* board support DMA */
1148 dma = it->options[2];
1149 if (((1 << dma) & board->DMAbits) == 0) {
1150 printk(", DMA is out of allowed range, FAIL!\n");
1151 return -EINVAL; /* Bad DMA */
1152 }
1153 ret = request_dma(dma, dev->board_name);
1154 if (ret) {
1155 printk(KERN_ERR ", unable to allocate DMA %u, FAIL!\n",
1156 dma);
1157 return -EBUSY; /* DMA isn't free */
1158 }
1159 devpriv->dma = dma;
1160 printk(KERN_INFO ", dma=%u", dma);
1161 pages = 1; /* we want 8KB */
1162 devpriv->dmabuf[0] = __get_dma_pages(GFP_KERNEL, pages);
1163 if (!devpriv->dmabuf[0]) {
1164 printk(", unable to allocate DMA buffer, FAIL!\n");
1165 /*
1166 * maybe experiment with try_to_free_pages()
1167 * will help ....
1168 */
1169 return -EBUSY; /* no buffer :-( */
1170 }
1171 devpriv->dmapages[0] = pages;
1172 devpriv->hwdmaptr[0] = virt_to_bus((void *)devpriv->dmabuf[0]);
1173 devpriv->hwdmasize[0] = PAGE_SIZE * (1 << pages);
1174 devpriv->dmabuf[1] = __get_dma_pages(GFP_KERNEL, pages);
1175 if (!devpriv->dmabuf[1]) {
1176 printk(KERN_ERR ", unable to allocate DMA buffer, FAIL!\n");
1177 return -EBUSY;
1178 }
1179 devpriv->dmapages[1] = pages;
1180 devpriv->hwdmaptr[1] = virt_to_bus((void *)devpriv->dmabuf[1]);
1181 devpriv->hwdmasize[1] = PAGE_SIZE * (1 << pages);
1182 }
1183 no_dma:
1184
1185 n_subdevices = 0;
1186 if (board->n_aichan > 0)
1187 n_subdevices++;
1188 if (board->n_aochan > 0)
1189 n_subdevices++;
1190 if (board->n_dichan > 0)
1191 n_subdevices++;
1192 if (board->n_dochan > 0)
1193 n_subdevices++;
1194
1195 ret = comedi_alloc_subdevices(dev, n_subdevices);
1196 if (ret)
1197 return ret;
1198
1199 subdev = 0;
1200
1201 /* analog input */
1202 if (board->n_aichan > 0) {
1203 s = &dev->subdevices[subdev];
1204 s->type = COMEDI_SUBD_AI;
1205 s->subdev_flags = SDF_READABLE;
1206 switch (board->board_type) {
1207 case boardA821:
1208 if (it->options[2] == 1) {
1209 s->n_chan = board->n_aichan_diff;
1210 s->subdev_flags |= SDF_DIFF;
1211 devpriv->use_diff = 1;
1212 } else {
1213 s->n_chan = board->n_aichan;
1214 s->subdev_flags |= SDF_GROUND;
1215 }
1216 break;
1217 case boardACL8112:
1218 case boardACL8216:
1219 if (it->options[4] == 1) {
1220 s->n_chan = board->n_aichan_diff;
1221 s->subdev_flags |= SDF_DIFF;
1222 devpriv->use_diff = 1;
1223 } else {
1224 s->n_chan = board->n_aichan;
1225 s->subdev_flags |= SDF_GROUND;
1226 }
1227 break;
1228 default:
1229 s->n_chan = board->n_aichan;
1230 s->subdev_flags |= SDF_GROUND;
1231 break;
1232 }
1233 s->maxdata = board->ai_maxdata;
1234 s->len_chanlist = MAX_CHANLIST_LEN;
1235 s->range_table = board->rangelist_ai;
1236 if (board->board_type == boardACL8216)
1237 s->insn_read = acl8216_ai_insn_read;
1238 else
1239 s->insn_read = pcl812_ai_insn_read;
1240
1241 devpriv->use_MPC = board->haveMPC508;
1242 s->cancel = pcl812_ai_cancel;
1243 if (dev->irq) {
1244 dev->read_subdev = s;
1245 s->subdev_flags |= SDF_CMD_READ;
1246 s->do_cmdtest = pcl812_ai_cmdtest;
1247 s->do_cmd = pcl812_ai_cmd;
1248 s->poll = pcl812_ai_poll;
1249 }
1250 switch (board->board_type) {
1251 case boardPCL812PG:
1252 if (it->options[4] == 1)
1253 s->range_table = &range_pcl812pg2_ai;
1254 break;
1255 case boardPCL812:
1256 switch (it->options[4]) {
1257 case 0:
1258 s->range_table = &range_bipolar10;
1259 break;
1260 case 1:
1261 s->range_table = &range_bipolar5;
1262 break;
1263 case 2:
1264 s->range_table = &range_bipolar2_5;
1265 break;
1266 case 3:
1267 s->range_table = &range812_bipolar1_25;
1268 break;
1269 case 4:
1270 s->range_table = &range812_bipolar0_625;
1271 break;
1272 case 5:
1273 s->range_table = &range812_bipolar0_3125;
1274 break;
1275 default:
1276 s->range_table = &range_bipolar10;
1277 break;
1278 printk
1279 (", incorrect range number %d, changing "
1280 "to 0 (+/-10V)", it->options[4]);
1281 break;
1282 }
1283 break;
1284 break;
1285 case boardPCL813B:
1286 if (it->options[1] == 1)
1287 s->range_table = &range_pcl813b2_ai;
1288 break;
1289 case boardISO813:
1290 switch (it->options[1]) {
1291 case 0:
1292 s->range_table = &range_iso813_1_ai;
1293 break;
1294 case 1:
1295 s->range_table = &range_iso813_1_2_ai;
1296 break;
1297 case 2:
1298 s->range_table = &range_iso813_2_ai;
1299 devpriv->range_correction = 1;
1300 break;
1301 case 3:
1302 s->range_table = &range_iso813_2_2_ai;
1303 devpriv->range_correction = 1;
1304 break;
1305 default:
1306 s->range_table = &range_iso813_1_ai;
1307 break;
1308 printk
1309 (", incorrect range number %d, "
1310 "changing to 0 ", it->options[1]);
1311 break;
1312 }
1313 break;
1314 case boardACL8113:
1315 switch (it->options[1]) {
1316 case 0:
1317 s->range_table = &range_acl8113_1_ai;
1318 break;
1319 case 1:
1320 s->range_table = &range_acl8113_1_2_ai;
1321 break;
1322 case 2:
1323 s->range_table = &range_acl8113_2_ai;
1324 devpriv->range_correction = 1;
1325 break;
1326 case 3:
1327 s->range_table = &range_acl8113_2_2_ai;
1328 devpriv->range_correction = 1;
1329 break;
1330 default:
1331 s->range_table = &range_acl8113_1_ai;
1332 break;
1333 printk
1334 (", incorrect range number %d, "
1335 "changing to 0 ", it->options[1]);
1336 break;
1337 }
1338 break;
1339 }
1340 subdev++;
1341 }
1342
1343 /* analog output */
1344 if (board->n_aochan > 0) {
1345 s = &dev->subdevices[subdev];
1346 s->type = COMEDI_SUBD_AO;
1347 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
1348 s->n_chan = board->n_aochan;
1349 s->maxdata = 0xfff;
1350 s->len_chanlist = 1;
1351 s->range_table = board->rangelist_ao;
1352 s->insn_read = pcl812_ao_insn_read;
1353 s->insn_write = pcl812_ao_insn_write;
1354 switch (board->board_type) {
1355 case boardA821:
1356 if (it->options[3] == 1)
1357 s->range_table = &range_unipolar10;
1358 break;
1359 case boardPCL812:
1360 case boardACL8112:
1361 case boardPCL812PG:
1362 case boardACL8216:
1363 if (it->options[5] == 1)
1364 s->range_table = &range_unipolar10;
1365 if (it->options[5] == 2)
1366 s->range_table = &range_unknown;
1367 break;
1368 }
1369 subdev++;
1370 }
1371
1372 /* digital input */
1373 if (board->n_dichan > 0) {
1374 s = &dev->subdevices[subdev];
1375 s->type = COMEDI_SUBD_DI;
1376 s->subdev_flags = SDF_READABLE;
1377 s->n_chan = board->n_dichan;
1378 s->maxdata = 1;
1379 s->len_chanlist = board->n_dichan;
1380 s->range_table = &range_digital;
1381 s->insn_bits = pcl812_di_insn_bits;
1382 subdev++;
1383 }
1384
1385 /* digital output */
1386 if (board->n_dochan > 0) {
1387 s = &dev->subdevices[subdev];
1388 s->type = COMEDI_SUBD_DO;
1389 s->subdev_flags = SDF_WRITABLE;
1390 s->n_chan = board->n_dochan;
1391 s->maxdata = 1;
1392 s->len_chanlist = board->n_dochan;
1393 s->range_table = &range_digital;
1394 s->insn_bits = pcl812_do_insn_bits;
1395 subdev++;
1396 }
1397
1398 switch (board->board_type) {
1399 case boardACL8216:
1400 devpriv->ai_is16b = 1;
1401 case boardPCL812PG:
1402 case boardPCL812:
1403 case boardACL8112:
1404 devpriv->max_812_ai_mode0_rangewait = 1;
1405 if (it->options[3] > 0)
1406 /* we use external trigger */
1407 devpriv->use_ext_trg = 1;
1408 case boardA821:
1409 devpriv->max_812_ai_mode0_rangewait = 1;
1410 devpriv->mode_reg_int = (irq << 4) & 0xf0;
1411 break;
1412 case boardPCL813B:
1413 case boardPCL813:
1414 case boardISO813:
1415 case boardACL8113:
1416 /* maybe there must by greatest timeout */
1417 devpriv->max_812_ai_mode0_rangewait = 5;
1418 break;
1419 }
1420
1421 printk(KERN_INFO "\n");
1422 devpriv->valid = 1;
1423
1424 pcl812_reset(dev);
1425
1426 return 0;
1427 }
1428
1429 static void pcl812_detach(struct comedi_device *dev)
1430 {
1431 struct pcl812_private *devpriv = dev->private;
1432
1433 if (devpriv) {
1434 if (devpriv->dmabuf[0])
1435 free_pages(devpriv->dmabuf[0], devpriv->dmapages[0]);
1436 if (devpriv->dmabuf[1])
1437 free_pages(devpriv->dmabuf[1], devpriv->dmapages[1]);
1438 if (devpriv->dma)
1439 free_dma(devpriv->dma);
1440 }
1441 comedi_legacy_detach(dev);
1442 }
1443
1444 static const struct pcl812_board boardtypes[] = {
1445 {"pcl812", boardPCL812, 16, 0, 2, 16, 16, 0x0fff,
1446 33000, 500, &range_bipolar10, &range_unipolar5,
1447 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1448 {"pcl812pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff,
1449 33000, 500, &range_pcl812pg_ai, &range_unipolar5,
1450 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1451 {"acl8112pg", boardPCL812PG, 16, 0, 2, 16, 16, 0x0fff,
1452 10000, 500, &range_pcl812pg_ai, &range_unipolar5,
1453 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1454 {"acl8112dg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1455 10000, 500, &range_acl8112dg_ai, &range_unipolar5,
1456 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1457 {"acl8112hg", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1458 10000, 500, &range_acl8112hg_ai, &range_unipolar5,
1459 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1460 {"a821pgl", boardA821, 16, 8, 1, 16, 16, 0x0fff,
1461 10000, 500, &range_pcl813b_ai, &range_unipolar5,
1462 0x000c, 0x00, PCLx1x_IORANGE, 0},
1463 {"a821pglnda", boardA821, 16, 8, 0, 0, 0, 0x0fff,
1464 10000, 500, &range_pcl813b_ai, NULL,
1465 0x000c, 0x00, PCLx1x_IORANGE, 0},
1466 {"a821pgh", boardA821, 16, 8, 1, 16, 16, 0x0fff,
1467 10000, 500, &range_a821pgh_ai, &range_unipolar5,
1468 0x000c, 0x00, PCLx1x_IORANGE, 0},
1469 {"a822pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1470 10000, 500, &range_acl8112dg_ai, &range_unipolar5,
1471 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1472 {"a822pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1473 10000, 500, &range_acl8112hg_ai, &range_unipolar5,
1474 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1475 {"a823pgl", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1476 8000, 500, &range_acl8112dg_ai, &range_unipolar5,
1477 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1478 {"a823pgh", boardACL8112, 16, 8, 2, 16, 16, 0x0fff,
1479 8000, 500, &range_acl8112hg_ai, &range_unipolar5,
1480 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1481 {"pcl813", boardPCL813, 32, 0, 0, 0, 0, 0x0fff,
1482 0, 0, &range_pcl813b_ai, NULL,
1483 0x0000, 0x00, PCLx1x_IORANGE, 0},
1484 {"pcl813b", boardPCL813B, 32, 0, 0, 0, 0, 0x0fff,
1485 0, 0, &range_pcl813b_ai, NULL,
1486 0x0000, 0x00, PCLx1x_IORANGE, 0},
1487 {"acl8113", boardACL8113, 32, 0, 0, 0, 0, 0x0fff,
1488 0, 0, &range_acl8113_1_ai, NULL,
1489 0x0000, 0x00, PCLx1x_IORANGE, 0},
1490 {"iso813", boardISO813, 32, 0, 0, 0, 0, 0x0fff,
1491 0, 0, &range_iso813_1_ai, NULL,
1492 0x0000, 0x00, PCLx1x_IORANGE, 0},
1493 {"acl8216", boardACL8216, 16, 8, 2, 16, 16, 0xffff,
1494 10000, 500, &range_pcl813b2_ai, &range_unipolar5,
1495 0xdcfc, 0x0a, PCLx1x_IORANGE, 1},
1496 {"a826pg", boardACL8216, 16, 8, 2, 16, 16, 0xffff,
1497 10000, 500, &range_pcl813b2_ai, &range_unipolar5,
1498 0xdcfc, 0x0a, PCLx1x_IORANGE, 0},
1499 };
1500
1501 static struct comedi_driver pcl812_driver = {
1502 .driver_name = "pcl812",
1503 .module = THIS_MODULE,
1504 .attach = pcl812_attach,
1505 .detach = pcl812_detach,
1506 .board_name = &boardtypes[0].name,
1507 .num_names = ARRAY_SIZE(boardtypes),
1508 .offset = sizeof(struct pcl812_board),
1509 };
1510 module_comedi_driver(pcl812_driver);
1511
1512 MODULE_AUTHOR("Comedi http://www.comedi.org");
1513 MODULE_DESCRIPTION("Comedi low-level driver");
1514 MODULE_LICENSE("GPL");
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