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111#include <linux/module.h>
112#include <linux/interrupt.h>
113#include <linux/gfp.h>
114#include <linux/delay.h>
115#include <linux/io.h>
116
117#include "../comedidev.h"
118
119#include "comedi_isadma.h"
120#include "comedi_8254.h"
121
122
123
124
125#define PCL812_TIMER_BASE 0x00
126#define PCL812_AI_LSB_REG 0x04
127#define PCL812_AI_MSB_REG 0x05
128#define PCL812_AI_MSB_DRDY BIT(4)
129#define PCL812_AO_LSB_REG(x) (0x04 + ((x) * 2))
130#define PCL812_AO_MSB_REG(x) (0x05 + ((x) * 2))
131#define PCL812_DI_LSB_REG 0x06
132#define PCL812_DI_MSB_REG 0x07
133#define PCL812_STATUS_REG 0x08
134#define PCL812_STATUS_DRDY BIT(5)
135#define PCL812_RANGE_REG 0x09
136#define PCL812_MUX_REG 0x0a
137#define PCL812_MUX_CHAN(x) ((x) << 0)
138#define PCL812_MUX_CS0 BIT(4)
139#define PCL812_MUX_CS1 BIT(5)
140#define PCL812_CTRL_REG 0x0b
141#define PCL812_CTRL_TRIG(x) (((x) & 0x7) << 0)
142#define PCL812_CTRL_DISABLE_TRIG PCL812_CTRL_TRIG(0)
143#define PCL812_CTRL_SOFT_TRIG PCL812_CTRL_TRIG(1)
144#define PCL812_CTRL_PACER_DMA_TRIG PCL812_CTRL_TRIG(2)
145#define PCL812_CTRL_PACER_EOC_TRIG PCL812_CTRL_TRIG(6)
146#define PCL812_SOFTTRIG_REG 0x0c
147#define PCL812_DO_LSB_REG 0x0d
148#define PCL812_DO_MSB_REG 0x0e
149
150#define MAX_CHANLIST_LEN 256
151
152static const struct comedi_lrange range_pcl812pg_ai = {
153 5, {
154 BIP_RANGE(5),
155 BIP_RANGE(2.5),
156 BIP_RANGE(1.25),
157 BIP_RANGE(0.625),
158 BIP_RANGE(0.3125)
159 }
160};
161
162static const struct comedi_lrange range_pcl812pg2_ai = {
163 5, {
164 BIP_RANGE(10),
165 BIP_RANGE(5),
166 BIP_RANGE(2.5),
167 BIP_RANGE(1.25),
168 BIP_RANGE(0.625)
169 }
170};
171
172static const struct comedi_lrange range812_bipolar1_25 = {
173 1, {
174 BIP_RANGE(1.25)
175 }
176};
177
178static const struct comedi_lrange range812_bipolar0_625 = {
179 1, {
180 BIP_RANGE(0.625)
181 }
182};
183
184static const struct comedi_lrange range812_bipolar0_3125 = {
185 1, {
186 BIP_RANGE(0.3125)
187 }
188};
189
190static const struct comedi_lrange range_pcl813b_ai = {
191 4, {
192 BIP_RANGE(5),
193 BIP_RANGE(2.5),
194 BIP_RANGE(1.25),
195 BIP_RANGE(0.625)
196 }
197};
198
199static const struct comedi_lrange range_pcl813b2_ai = {
200 4, {
201 UNI_RANGE(10),
202 UNI_RANGE(5),
203 UNI_RANGE(2.5),
204 UNI_RANGE(1.25)
205 }
206};
207
208static const struct comedi_lrange range_iso813_1_ai = {
209 5, {
210 BIP_RANGE(5),
211 BIP_RANGE(2.5),
212 BIP_RANGE(1.25),
213 BIP_RANGE(0.625),
214 BIP_RANGE(0.3125)
215 }
216};
217
218static const struct comedi_lrange range_iso813_1_2_ai = {
219 5, {
220 UNI_RANGE(10),
221 UNI_RANGE(5),
222 UNI_RANGE(2.5),
223 UNI_RANGE(1.25),
224 UNI_RANGE(0.625)
225 }
226};
227
228static const struct comedi_lrange range_iso813_2_ai = {
229 4, {
230 BIP_RANGE(5),
231 BIP_RANGE(2.5),
232 BIP_RANGE(1.25),
233 BIP_RANGE(0.625)
234 }
235};
236
237static const struct comedi_lrange range_iso813_2_2_ai = {
238 4, {
239 UNI_RANGE(10),
240 UNI_RANGE(5),
241 UNI_RANGE(2.5),
242 UNI_RANGE(1.25)
243 }
244};
245
246static const struct comedi_lrange range_acl8113_1_ai = {
247 4, {
248 BIP_RANGE(5),
249 BIP_RANGE(2.5),
250 BIP_RANGE(1.25),
251 BIP_RANGE(0.625)
252 }
253};
254
255static const struct comedi_lrange range_acl8113_1_2_ai = {
256 4, {
257 UNI_RANGE(10),
258 UNI_RANGE(5),
259 UNI_RANGE(2.5),
260 UNI_RANGE(1.25)
261 }
262};
263
264static const struct comedi_lrange range_acl8113_2_ai = {
265 3, {
266 BIP_RANGE(5),
267 BIP_RANGE(2.5),
268 BIP_RANGE(1.25)
269 }
270};
271
272static const struct comedi_lrange range_acl8113_2_2_ai = {
273 3, {
274 UNI_RANGE(10),
275 UNI_RANGE(5),
276 UNI_RANGE(2.5)
277 }
278};
279
280static const struct comedi_lrange range_acl8112dg_ai = {
281 9, {
282 BIP_RANGE(5),
283 BIP_RANGE(2.5),
284 BIP_RANGE(1.25),
285 BIP_RANGE(0.625),
286 UNI_RANGE(10),
287 UNI_RANGE(5),
288 UNI_RANGE(2.5),
289 UNI_RANGE(1.25),
290 BIP_RANGE(10)
291 }
292};
293
294static const struct comedi_lrange range_acl8112hg_ai = {
295 12, {
296 BIP_RANGE(5),
297 BIP_RANGE(0.5),
298 BIP_RANGE(0.05),
299 BIP_RANGE(0.005),
300 UNI_RANGE(10),
301 UNI_RANGE(1),
302 UNI_RANGE(0.1),
303 UNI_RANGE(0.01),
304 BIP_RANGE(10),
305 BIP_RANGE(1),
306 BIP_RANGE(0.1),
307 BIP_RANGE(0.01)
308 }
309};
310
311static const struct comedi_lrange range_a821pgh_ai = {
312 4, {
313 BIP_RANGE(5),
314 BIP_RANGE(0.5),
315 BIP_RANGE(0.05),
316 BIP_RANGE(0.005)
317 }
318};
319
320enum pcl812_boardtype {
321 BOARD_PCL812PG = 0,
322 BOARD_PCL813B = 1,
323 BOARD_PCL812 = 2,
324 BOARD_PCL813 = 3,
325 BOARD_ISO813 = 5,
326 BOARD_ACL8113 = 6,
327 BOARD_ACL8112 = 7,
328 BOARD_ACL8216 = 8,
329 BOARD_A821 = 9,
330};
331
332struct pcl812_board {
333 const char *name;
334 enum pcl812_boardtype board_type;
335 int n_aichan;
336 int n_aochan;
337 unsigned int ai_ns_min;
338 const struct comedi_lrange *rangelist_ai;
339 unsigned int irq_bits;
340 unsigned int has_dma:1;
341 unsigned int has_16bit_ai:1;
342 unsigned int has_mpc508_mux:1;
343 unsigned int has_dio:1;
344};
345
346static const struct pcl812_board boardtypes[] = {
347 {
348 .name = "pcl812",
349 .board_type = BOARD_PCL812,
350 .n_aichan = 16,
351 .n_aochan = 2,
352 .ai_ns_min = 33000,
353 .rangelist_ai = &range_bipolar10,
354 .irq_bits = 0xdcfc,
355 .has_dma = 1,
356 .has_dio = 1,
357 }, {
358 .name = "pcl812pg",
359 .board_type = BOARD_PCL812PG,
360 .n_aichan = 16,
361 .n_aochan = 2,
362 .ai_ns_min = 33000,
363 .rangelist_ai = &range_pcl812pg_ai,
364 .irq_bits = 0xdcfc,
365 .has_dma = 1,
366 .has_dio = 1,
367 }, {
368 .name = "acl8112pg",
369 .board_type = BOARD_PCL812PG,
370 .n_aichan = 16,
371 .n_aochan = 2,
372 .ai_ns_min = 10000,
373 .rangelist_ai = &range_pcl812pg_ai,
374 .irq_bits = 0xdcfc,
375 .has_dma = 1,
376 .has_dio = 1,
377 }, {
378 .name = "acl8112dg",
379 .board_type = BOARD_ACL8112,
380 .n_aichan = 16,
381 .n_aochan = 2,
382 .ai_ns_min = 10000,
383 .rangelist_ai = &range_acl8112dg_ai,
384 .irq_bits = 0xdcfc,
385 .has_dma = 1,
386 .has_mpc508_mux = 1,
387 .has_dio = 1,
388 }, {
389 .name = "acl8112hg",
390 .board_type = BOARD_ACL8112,
391 .n_aichan = 16,
392 .n_aochan = 2,
393 .ai_ns_min = 10000,
394 .rangelist_ai = &range_acl8112hg_ai,
395 .irq_bits = 0xdcfc,
396 .has_dma = 1,
397 .has_mpc508_mux = 1,
398 .has_dio = 1,
399 }, {
400 .name = "a821pgl",
401 .board_type = BOARD_A821,
402 .n_aichan = 16,
403 .n_aochan = 1,
404 .ai_ns_min = 10000,
405 .rangelist_ai = &range_pcl813b_ai,
406 .irq_bits = 0x000c,
407 .has_dio = 1,
408 }, {
409 .name = "a821pglnda",
410 .board_type = BOARD_A821,
411 .n_aichan = 16,
412 .ai_ns_min = 10000,
413 .rangelist_ai = &range_pcl813b_ai,
414 .irq_bits = 0x000c,
415 }, {
416 .name = "a821pgh",
417 .board_type = BOARD_A821,
418 .n_aichan = 16,
419 .n_aochan = 1,
420 .ai_ns_min = 10000,
421 .rangelist_ai = &range_a821pgh_ai,
422 .irq_bits = 0x000c,
423 .has_dio = 1,
424 }, {
425 .name = "a822pgl",
426 .board_type = BOARD_ACL8112,
427 .n_aichan = 16,
428 .n_aochan = 2,
429 .ai_ns_min = 10000,
430 .rangelist_ai = &range_acl8112dg_ai,
431 .irq_bits = 0xdcfc,
432 .has_dma = 1,
433 .has_dio = 1,
434 }, {
435 .name = "a822pgh",
436 .board_type = BOARD_ACL8112,
437 .n_aichan = 16,
438 .n_aochan = 2,
439 .ai_ns_min = 10000,
440 .rangelist_ai = &range_acl8112hg_ai,
441 .irq_bits = 0xdcfc,
442 .has_dma = 1,
443 .has_dio = 1,
444 }, {
445 .name = "a823pgl",
446 .board_type = BOARD_ACL8112,
447 .n_aichan = 16,
448 .n_aochan = 2,
449 .ai_ns_min = 8000,
450 .rangelist_ai = &range_acl8112dg_ai,
451 .irq_bits = 0xdcfc,
452 .has_dma = 1,
453 .has_dio = 1,
454 }, {
455 .name = "a823pgh",
456 .board_type = BOARD_ACL8112,
457 .n_aichan = 16,
458 .n_aochan = 2,
459 .ai_ns_min = 8000,
460 .rangelist_ai = &range_acl8112hg_ai,
461 .irq_bits = 0xdcfc,
462 .has_dma = 1,
463 .has_dio = 1,
464 }, {
465 .name = "pcl813",
466 .board_type = BOARD_PCL813,
467 .n_aichan = 32,
468 .rangelist_ai = &range_pcl813b_ai,
469 }, {
470 .name = "pcl813b",
471 .board_type = BOARD_PCL813B,
472 .n_aichan = 32,
473 .rangelist_ai = &range_pcl813b_ai,
474 }, {
475 .name = "acl8113",
476 .board_type = BOARD_ACL8113,
477 .n_aichan = 32,
478 .rangelist_ai = &range_acl8113_1_ai,
479 }, {
480 .name = "iso813",
481 .board_type = BOARD_ISO813,
482 .n_aichan = 32,
483 .rangelist_ai = &range_iso813_1_ai,
484 }, {
485 .name = "acl8216",
486 .board_type = BOARD_ACL8216,
487 .n_aichan = 16,
488 .n_aochan = 2,
489 .ai_ns_min = 10000,
490 .rangelist_ai = &range_pcl813b2_ai,
491 .irq_bits = 0xdcfc,
492 .has_dma = 1,
493 .has_16bit_ai = 1,
494 .has_mpc508_mux = 1,
495 .has_dio = 1,
496 }, {
497 .name = "a826pg",
498 .board_type = BOARD_ACL8216,
499 .n_aichan = 16,
500 .n_aochan = 2,
501 .ai_ns_min = 10000,
502 .rangelist_ai = &range_pcl813b2_ai,
503 .irq_bits = 0xdcfc,
504 .has_dma = 1,
505 .has_16bit_ai = 1,
506 .has_dio = 1,
507 },
508};
509
510struct pcl812_private {
511 struct comedi_isadma *dma;
512 unsigned char range_correction;
513 unsigned int last_ai_chanspec;
514 unsigned char mode_reg_int;
515 unsigned int ai_poll_ptr;
516 unsigned int max_812_ai_mode0_rangewait;
517 unsigned int use_diff:1;
518 unsigned int use_mpc508:1;
519 unsigned int use_ext_trg:1;
520 unsigned int ai_dma:1;
521 unsigned int ai_eos:1;
522};
523
524static void pcl812_ai_setup_dma(struct comedi_device *dev,
525 struct comedi_subdevice *s,
526 unsigned int unread_samples)
527{
528 struct pcl812_private *devpriv = dev->private;
529 struct comedi_isadma *dma = devpriv->dma;
530 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
531 unsigned int bytes;
532 unsigned int max_samples;
533 unsigned int nsamples;
534
535 comedi_isadma_disable(dma->chan);
536
537
538 bytes = devpriv->ai_eos ? comedi_bytes_per_scan(s) : desc->maxsize;
539 max_samples = comedi_bytes_to_samples(s, bytes);
540
541
542
543
544
545 nsamples = comedi_nsamples_left(s, max_samples + unread_samples);
546 if (nsamples > unread_samples) {
547 nsamples -= unread_samples;
548 desc->size = comedi_samples_to_bytes(s, nsamples);
549 comedi_isadma_program(desc);
550 }
551}
552
553static void pcl812_ai_set_chan_range(struct comedi_device *dev,
554 unsigned int chanspec, char wait)
555{
556 struct pcl812_private *devpriv = dev->private;
557 unsigned int chan = CR_CHAN(chanspec);
558 unsigned int range = CR_RANGE(chanspec);
559 unsigned int mux = 0;
560
561 if (chanspec == devpriv->last_ai_chanspec)
562 return;
563
564 devpriv->last_ai_chanspec = chanspec;
565
566 if (devpriv->use_mpc508) {
567 if (devpriv->use_diff) {
568 mux |= PCL812_MUX_CS0 | PCL812_MUX_CS1;
569 } else {
570 if (chan < 8)
571 mux |= PCL812_MUX_CS0;
572 else
573 mux |= PCL812_MUX_CS1;
574 }
575 }
576
577 outb(mux | PCL812_MUX_CHAN(chan), dev->iobase + PCL812_MUX_REG);
578 outb(range + devpriv->range_correction, dev->iobase + PCL812_RANGE_REG);
579
580 if (wait)
581
582
583
584
585 udelay(devpriv->max_812_ai_mode0_rangewait);
586}
587
588static void pcl812_ai_clear_eoc(struct comedi_device *dev)
589{
590
591 outb(0, dev->iobase + PCL812_STATUS_REG);
592}
593
594static void pcl812_ai_soft_trig(struct comedi_device *dev)
595{
596
597 outb(255, dev->iobase + PCL812_SOFTTRIG_REG);
598}
599
600static unsigned int pcl812_ai_get_sample(struct comedi_device *dev,
601 struct comedi_subdevice *s)
602{
603 unsigned int val;
604
605 val = inb(dev->iobase + PCL812_AI_MSB_REG) << 8;
606 val |= inb(dev->iobase + PCL812_AI_LSB_REG);
607
608 return val & s->maxdata;
609}
610
611static int pcl812_ai_eoc(struct comedi_device *dev,
612 struct comedi_subdevice *s,
613 struct comedi_insn *insn,
614 unsigned long context)
615{
616 unsigned int status;
617
618 if (s->maxdata > 0x0fff) {
619 status = inb(dev->iobase + PCL812_STATUS_REG);
620 if ((status & PCL812_STATUS_DRDY) == 0)
621 return 0;
622 } else {
623 status = inb(dev->iobase + PCL812_AI_MSB_REG);
624 if ((status & PCL812_AI_MSB_DRDY) == 0)
625 return 0;
626 }
627 return -EBUSY;
628}
629
630static int pcl812_ai_cmdtest(struct comedi_device *dev,
631 struct comedi_subdevice *s, struct comedi_cmd *cmd)
632{
633 const struct pcl812_board *board = dev->board_ptr;
634 struct pcl812_private *devpriv = dev->private;
635 int err = 0;
636 unsigned int flags;
637
638
639
640 err |= comedi_check_trigger_src(&cmd->start_src, TRIG_NOW);
641 err |= comedi_check_trigger_src(&cmd->scan_begin_src, TRIG_FOLLOW);
642
643 if (devpriv->use_ext_trg)
644 flags = TRIG_EXT;
645 else
646 flags = TRIG_TIMER;
647 err |= comedi_check_trigger_src(&cmd->convert_src, flags);
648
649 err |= comedi_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
650 err |= comedi_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
651
652 if (err)
653 return 1;
654
655
656
657 err |= comedi_check_trigger_is_unique(cmd->stop_src);
658
659
660
661 if (err)
662 return 2;
663
664
665
666 err |= comedi_check_trigger_arg_is(&cmd->start_arg, 0);
667 err |= comedi_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
668
669 if (cmd->convert_src == TRIG_TIMER) {
670 err |= comedi_check_trigger_arg_min(&cmd->convert_arg,
671 board->ai_ns_min);
672 } else {
673 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, 0);
674 }
675
676 err |= comedi_check_trigger_arg_min(&cmd->chanlist_len, 1);
677 err |= comedi_check_trigger_arg_is(&cmd->scan_end_arg,
678 cmd->chanlist_len);
679
680 if (cmd->stop_src == TRIG_COUNT)
681 err |= comedi_check_trigger_arg_min(&cmd->stop_arg, 1);
682 else
683 err |= comedi_check_trigger_arg_is(&cmd->stop_arg, 0);
684
685 if (err)
686 return 3;
687
688
689
690 if (cmd->convert_src == TRIG_TIMER) {
691 unsigned int arg = cmd->convert_arg;
692
693 comedi_8254_cascade_ns_to_timer(dev->pacer, &arg, cmd->flags);
694 err |= comedi_check_trigger_arg_is(&cmd->convert_arg, arg);
695 }
696
697 if (err)
698 return 4;
699
700 return 0;
701}
702
703static int pcl812_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
704{
705 struct pcl812_private *devpriv = dev->private;
706 struct comedi_isadma *dma = devpriv->dma;
707 struct comedi_cmd *cmd = &s->async->cmd;
708 unsigned int ctrl = 0;
709 unsigned int i;
710
711 pcl812_ai_set_chan_range(dev, cmd->chanlist[0], 1);
712
713 if (dma) {
714 devpriv->ai_dma = 1;
715 for (i = 1; i < cmd->chanlist_len; i++)
716 if (cmd->chanlist[0] != cmd->chanlist[i]) {
717
718 devpriv->ai_dma = 0;
719 break;
720 }
721 } else {
722 devpriv->ai_dma = 0;
723 }
724
725 devpriv->ai_poll_ptr = 0;
726
727
728 if (cmd->flags & CMDF_WAKE_EOS) {
729 devpriv->ai_eos = 1;
730
731
732 if (cmd->chanlist_len == 1)
733 devpriv->ai_dma = 0;
734 }
735
736 if (devpriv->ai_dma) {
737
738 dma->cur_dma = 0;
739 pcl812_ai_setup_dma(dev, s, 0);
740 }
741
742 switch (cmd->convert_src) {
743 case TRIG_TIMER:
744 comedi_8254_update_divisors(dev->pacer);
745 comedi_8254_pacer_enable(dev->pacer, 1, 2, true);
746 break;
747 }
748
749 if (devpriv->ai_dma)
750 ctrl |= PCL812_CTRL_PACER_DMA_TRIG;
751 else
752 ctrl |= PCL812_CTRL_PACER_EOC_TRIG;
753 outb(devpriv->mode_reg_int | ctrl, dev->iobase + PCL812_CTRL_REG);
754
755 return 0;
756}
757
758static bool pcl812_ai_next_chan(struct comedi_device *dev,
759 struct comedi_subdevice *s)
760{
761 struct comedi_cmd *cmd = &s->async->cmd;
762
763 if (cmd->stop_src == TRIG_COUNT &&
764 s->async->scans_done >= cmd->stop_arg) {
765 s->async->events |= COMEDI_CB_EOA;
766 return false;
767 }
768
769 return true;
770}
771
772static void pcl812_handle_eoc(struct comedi_device *dev,
773 struct comedi_subdevice *s)
774{
775 struct comedi_cmd *cmd = &s->async->cmd;
776 unsigned int chan = s->async->cur_chan;
777 unsigned int next_chan;
778 unsigned short val;
779
780 if (pcl812_ai_eoc(dev, s, NULL, 0)) {
781 dev_dbg(dev->class_dev, "A/D cmd IRQ without DRDY!\n");
782 s->async->events |= COMEDI_CB_ERROR;
783 return;
784 }
785
786 val = pcl812_ai_get_sample(dev, s);
787 comedi_buf_write_samples(s, &val, 1);
788
789
790 next_chan = s->async->cur_chan;
791 if (cmd->chanlist[chan] != cmd->chanlist[next_chan])
792 pcl812_ai_set_chan_range(dev, cmd->chanlist[next_chan], 0);
793
794 pcl812_ai_next_chan(dev, s);
795}
796
797static void transfer_from_dma_buf(struct comedi_device *dev,
798 struct comedi_subdevice *s,
799 unsigned short *ptr,
800 unsigned int bufptr, unsigned int len)
801{
802 unsigned int i;
803 unsigned short val;
804
805 for (i = len; i; i--) {
806 val = ptr[bufptr++];
807 comedi_buf_write_samples(s, &val, 1);
808
809 if (!pcl812_ai_next_chan(dev, s))
810 break;
811 }
812}
813
814static void pcl812_handle_dma(struct comedi_device *dev,
815 struct comedi_subdevice *s)
816{
817 struct pcl812_private *devpriv = dev->private;
818 struct comedi_isadma *dma = devpriv->dma;
819 struct comedi_isadma_desc *desc = &dma->desc[dma->cur_dma];
820 unsigned int nsamples;
821 int bufptr;
822
823 nsamples = comedi_bytes_to_samples(s, desc->size) -
824 devpriv->ai_poll_ptr;
825 bufptr = devpriv->ai_poll_ptr;
826 devpriv->ai_poll_ptr = 0;
827
828
829 dma->cur_dma = 1 - dma->cur_dma;
830 pcl812_ai_setup_dma(dev, s, nsamples);
831
832 transfer_from_dma_buf(dev, s, desc->virt_addr, bufptr, nsamples);
833}
834
835static irqreturn_t pcl812_interrupt(int irq, void *d)
836{
837 struct comedi_device *dev = d;
838 struct comedi_subdevice *s = dev->read_subdev;
839 struct pcl812_private *devpriv = dev->private;
840
841 if (!dev->attached) {
842 pcl812_ai_clear_eoc(dev);
843 return IRQ_HANDLED;
844 }
845
846 if (devpriv->ai_dma)
847 pcl812_handle_dma(dev, s);
848 else
849 pcl812_handle_eoc(dev, s);
850
851 pcl812_ai_clear_eoc(dev);
852
853 comedi_handle_events(dev, s);
854 return IRQ_HANDLED;
855}
856
857static int pcl812_ai_poll(struct comedi_device *dev, struct comedi_subdevice *s)
858{
859 struct pcl812_private *devpriv = dev->private;
860 struct comedi_isadma *dma = devpriv->dma;
861 struct comedi_isadma_desc *desc;
862 unsigned long flags;
863 unsigned int poll;
864 int ret;
865
866
867 if (!devpriv->ai_dma)
868 return 0;
869
870 spin_lock_irqsave(&dev->spinlock, flags);
871
872 poll = comedi_isadma_poll(dma);
873 poll = comedi_bytes_to_samples(s, poll);
874 if (poll > devpriv->ai_poll_ptr) {
875 desc = &dma->desc[dma->cur_dma];
876 transfer_from_dma_buf(dev, s, desc->virt_addr,
877 devpriv->ai_poll_ptr,
878 poll - devpriv->ai_poll_ptr);
879
880 devpriv->ai_poll_ptr = poll;
881
882 ret = comedi_buf_n_bytes_ready(s);
883 } else {
884
885 ret = 0;
886 }
887
888 spin_unlock_irqrestore(&dev->spinlock, flags);
889
890 return ret;
891}
892
893static int pcl812_ai_cancel(struct comedi_device *dev,
894 struct comedi_subdevice *s)
895{
896 struct pcl812_private *devpriv = dev->private;
897
898 if (devpriv->ai_dma)
899 comedi_isadma_disable(devpriv->dma->chan);
900
901 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
902 dev->iobase + PCL812_CTRL_REG);
903 comedi_8254_pacer_enable(dev->pacer, 1, 2, false);
904 pcl812_ai_clear_eoc(dev);
905 return 0;
906}
907
908static int pcl812_ai_insn_read(struct comedi_device *dev,
909 struct comedi_subdevice *s,
910 struct comedi_insn *insn,
911 unsigned int *data)
912{
913 struct pcl812_private *devpriv = dev->private;
914 int ret = 0;
915 int i;
916
917 outb(devpriv->mode_reg_int | PCL812_CTRL_SOFT_TRIG,
918 dev->iobase + PCL812_CTRL_REG);
919
920 pcl812_ai_set_chan_range(dev, insn->chanspec, 1);
921
922 for (i = 0; i < insn->n; i++) {
923 pcl812_ai_clear_eoc(dev);
924 pcl812_ai_soft_trig(dev);
925
926 ret = comedi_timeout(dev, s, insn, pcl812_ai_eoc, 0);
927 if (ret)
928 break;
929
930 data[i] = pcl812_ai_get_sample(dev, s);
931 }
932 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
933 dev->iobase + PCL812_CTRL_REG);
934 pcl812_ai_clear_eoc(dev);
935
936 return ret ? ret : insn->n;
937}
938
939static int pcl812_ao_insn_write(struct comedi_device *dev,
940 struct comedi_subdevice *s,
941 struct comedi_insn *insn,
942 unsigned int *data)
943{
944 unsigned int chan = CR_CHAN(insn->chanspec);
945 unsigned int val = s->readback[chan];
946 int i;
947
948 for (i = 0; i < insn->n; i++) {
949 val = data[i];
950 outb(val & 0xff, dev->iobase + PCL812_AO_LSB_REG(chan));
951 outb((val >> 8) & 0x0f, dev->iobase + PCL812_AO_MSB_REG(chan));
952 }
953 s->readback[chan] = val;
954
955 return insn->n;
956}
957
958static int pcl812_di_insn_bits(struct comedi_device *dev,
959 struct comedi_subdevice *s,
960 struct comedi_insn *insn,
961 unsigned int *data)
962{
963 data[1] = inb(dev->iobase + PCL812_DI_LSB_REG) |
964 (inb(dev->iobase + PCL812_DI_MSB_REG) << 8);
965
966 return insn->n;
967}
968
969static int pcl812_do_insn_bits(struct comedi_device *dev,
970 struct comedi_subdevice *s,
971 struct comedi_insn *insn,
972 unsigned int *data)
973{
974 if (comedi_dio_update_state(s, data)) {
975 outb(s->state & 0xff, dev->iobase + PCL812_DO_LSB_REG);
976 outb((s->state >> 8), dev->iobase + PCL812_DO_MSB_REG);
977 }
978
979 data[1] = s->state;
980
981 return insn->n;
982}
983
984static void pcl812_reset(struct comedi_device *dev)
985{
986 const struct pcl812_board *board = dev->board_ptr;
987 struct pcl812_private *devpriv = dev->private;
988 unsigned int chan;
989
990
991 outb(devpriv->mode_reg_int | PCL812_CTRL_DISABLE_TRIG,
992 dev->iobase + PCL812_CTRL_REG);
993 pcl812_ai_clear_eoc(dev);
994
995
996
997
998
999 devpriv->last_ai_chanspec = CR_PACK(16, 0, 0);
1000 pcl812_ai_set_chan_range(dev, CR_PACK(0, 0, 0), 0);
1001
1002
1003 for (chan = 0; chan < board->n_aochan; chan++) {
1004 outb(0, dev->iobase + PCL812_AO_LSB_REG(chan));
1005 outb(0, dev->iobase + PCL812_AO_MSB_REG(chan));
1006 }
1007
1008
1009 if (board->has_dio) {
1010 outb(0, dev->iobase + PCL812_DO_MSB_REG);
1011 outb(0, dev->iobase + PCL812_DO_LSB_REG);
1012 }
1013}
1014
1015static void pcl812_set_ai_range_table(struct comedi_device *dev,
1016 struct comedi_subdevice *s,
1017 struct comedi_devconfig *it)
1018{
1019 const struct pcl812_board *board = dev->board_ptr;
1020 struct pcl812_private *devpriv = dev->private;
1021
1022 switch (board->board_type) {
1023 case BOARD_PCL812PG:
1024 if (it->options[4] == 1)
1025 s->range_table = &range_pcl812pg2_ai;
1026 else
1027 s->range_table = board->rangelist_ai;
1028 break;
1029 case BOARD_PCL812:
1030 switch (it->options[4]) {
1031 case 0:
1032 s->range_table = &range_bipolar10;
1033 break;
1034 case 1:
1035 s->range_table = &range_bipolar5;
1036 break;
1037 case 2:
1038 s->range_table = &range_bipolar2_5;
1039 break;
1040 case 3:
1041 s->range_table = &range812_bipolar1_25;
1042 break;
1043 case 4:
1044 s->range_table = &range812_bipolar0_625;
1045 break;
1046 case 5:
1047 s->range_table = &range812_bipolar0_3125;
1048 break;
1049 default:
1050 s->range_table = &range_bipolar10;
1051 break;
1052 }
1053 break;
1054 case BOARD_PCL813B:
1055 if (it->options[1] == 1)
1056 s->range_table = &range_pcl813b2_ai;
1057 else
1058 s->range_table = board->rangelist_ai;
1059 break;
1060 case BOARD_ISO813:
1061 switch (it->options[1]) {
1062 case 0:
1063 s->range_table = &range_iso813_1_ai;
1064 break;
1065 case 1:
1066 s->range_table = &range_iso813_1_2_ai;
1067 break;
1068 case 2:
1069 s->range_table = &range_iso813_2_ai;
1070 devpriv->range_correction = 1;
1071 break;
1072 case 3:
1073 s->range_table = &range_iso813_2_2_ai;
1074 devpriv->range_correction = 1;
1075 break;
1076 default:
1077 s->range_table = &range_iso813_1_ai;
1078 break;
1079 }
1080 break;
1081 case BOARD_ACL8113:
1082 switch (it->options[1]) {
1083 case 0:
1084 s->range_table = &range_acl8113_1_ai;
1085 break;
1086 case 1:
1087 s->range_table = &range_acl8113_1_2_ai;
1088 break;
1089 case 2:
1090 s->range_table = &range_acl8113_2_ai;
1091 devpriv->range_correction = 1;
1092 break;
1093 case 3:
1094 s->range_table = &range_acl8113_2_2_ai;
1095 devpriv->range_correction = 1;
1096 break;
1097 default:
1098 s->range_table = &range_acl8113_1_ai;
1099 break;
1100 }
1101 break;
1102 default:
1103 s->range_table = board->rangelist_ai;
1104 break;
1105 }
1106}
1107
1108static void pcl812_alloc_dma(struct comedi_device *dev, unsigned int dma_chan)
1109{
1110 struct pcl812_private *devpriv = dev->private;
1111
1112
1113 if (!(dma_chan == 3 || dma_chan == 1))
1114 return;
1115
1116
1117 devpriv->dma = comedi_isadma_alloc(dev, 2, dma_chan, dma_chan,
1118 PAGE_SIZE * 2, COMEDI_ISADMA_READ);
1119}
1120
1121static void pcl812_free_dma(struct comedi_device *dev)
1122{
1123 struct pcl812_private *devpriv = dev->private;
1124
1125 if (devpriv)
1126 comedi_isadma_free(devpriv->dma);
1127}
1128
1129static int pcl812_attach(struct comedi_device *dev, struct comedi_devconfig *it)
1130{
1131 const struct pcl812_board *board = dev->board_ptr;
1132 struct pcl812_private *devpriv;
1133 struct comedi_subdevice *s;
1134 int n_subdevices;
1135 int subdev;
1136 int ret;
1137
1138 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
1139 if (!devpriv)
1140 return -ENOMEM;
1141
1142 ret = comedi_request_region(dev, it->options[0], 0x10);
1143 if (ret)
1144 return ret;
1145
1146 if (board->irq_bits) {
1147 dev->pacer = comedi_8254_init(dev->iobase + PCL812_TIMER_BASE,
1148 I8254_OSC_BASE_2MHZ,
1149 I8254_IO8, 0);
1150 if (!dev->pacer)
1151 return -ENOMEM;
1152
1153 if ((1 << it->options[1]) & board->irq_bits) {
1154 ret = request_irq(it->options[1], pcl812_interrupt, 0,
1155 dev->board_name, dev);
1156 if (ret == 0)
1157 dev->irq = it->options[1];
1158 }
1159 }
1160
1161
1162 if (dev->irq && board->has_dma)
1163 pcl812_alloc_dma(dev, it->options[2]);
1164
1165
1166 switch (board->board_type) {
1167 case BOARD_A821:
1168 if (it->options[2] == 1)
1169 devpriv->use_diff = 1;
1170 break;
1171 case BOARD_ACL8112:
1172 case BOARD_ACL8216:
1173 if (it->options[4] == 1)
1174 devpriv->use_diff = 1;
1175 break;
1176 default:
1177 break;
1178 }
1179
1180 n_subdevices = 1;
1181 if (board->n_aochan > 0)
1182 n_subdevices++;
1183 if (board->has_dio)
1184 n_subdevices += 2;
1185
1186 ret = comedi_alloc_subdevices(dev, n_subdevices);
1187 if (ret)
1188 return ret;
1189
1190 subdev = 0;
1191
1192
1193 s = &dev->subdevices[subdev];
1194 s->type = COMEDI_SUBD_AI;
1195 s->subdev_flags = SDF_READABLE;
1196 if (devpriv->use_diff) {
1197 s->subdev_flags |= SDF_DIFF;
1198 s->n_chan = board->n_aichan / 2;
1199 } else {
1200 s->subdev_flags |= SDF_GROUND;
1201 s->n_chan = board->n_aichan;
1202 }
1203 s->maxdata = board->has_16bit_ai ? 0xffff : 0x0fff;
1204
1205 pcl812_set_ai_range_table(dev, s, it);
1206
1207 s->insn_read = pcl812_ai_insn_read;
1208
1209 if (dev->irq) {
1210 dev->read_subdev = s;
1211 s->subdev_flags |= SDF_CMD_READ;
1212 s->len_chanlist = MAX_CHANLIST_LEN;
1213 s->do_cmdtest = pcl812_ai_cmdtest;
1214 s->do_cmd = pcl812_ai_cmd;
1215 s->poll = pcl812_ai_poll;
1216 s->cancel = pcl812_ai_cancel;
1217 }
1218
1219 devpriv->use_mpc508 = board->has_mpc508_mux;
1220
1221 subdev++;
1222
1223
1224 if (board->n_aochan > 0) {
1225 s = &dev->subdevices[subdev];
1226 s->type = COMEDI_SUBD_AO;
1227 s->subdev_flags = SDF_WRITABLE | SDF_GROUND;
1228 s->n_chan = board->n_aochan;
1229 s->maxdata = 0xfff;
1230 switch (board->board_type) {
1231 case BOARD_A821:
1232 if (it->options[3] == 1)
1233 s->range_table = &range_unipolar10;
1234 else
1235 s->range_table = &range_unipolar5;
1236 break;
1237 case BOARD_PCL812:
1238 case BOARD_ACL8112:
1239 case BOARD_PCL812PG:
1240 case BOARD_ACL8216:
1241 switch (it->options[5]) {
1242 case 1:
1243 s->range_table = &range_unipolar10;
1244 break;
1245 case 2:
1246 s->range_table = &range_unknown;
1247 break;
1248 default:
1249 s->range_table = &range_unipolar5;
1250 break;
1251 }
1252 break;
1253 default:
1254 s->range_table = &range_unipolar5;
1255 break;
1256 }
1257 s->insn_write = pcl812_ao_insn_write;
1258
1259 ret = comedi_alloc_subdev_readback(s);
1260 if (ret)
1261 return ret;
1262
1263 subdev++;
1264 }
1265
1266 if (board->has_dio) {
1267
1268 s = &dev->subdevices[subdev];
1269 s->type = COMEDI_SUBD_DI;
1270 s->subdev_flags = SDF_READABLE;
1271 s->n_chan = 16;
1272 s->maxdata = 1;
1273 s->range_table = &range_digital;
1274 s->insn_bits = pcl812_di_insn_bits;
1275 subdev++;
1276
1277
1278 s = &dev->subdevices[subdev];
1279 s->type = COMEDI_SUBD_DO;
1280 s->subdev_flags = SDF_WRITABLE;
1281 s->n_chan = 16;
1282 s->maxdata = 1;
1283 s->range_table = &range_digital;
1284 s->insn_bits = pcl812_do_insn_bits;
1285 subdev++;
1286 }
1287
1288 switch (board->board_type) {
1289 case BOARD_ACL8216:
1290 case BOARD_PCL812PG:
1291 case BOARD_PCL812:
1292 case BOARD_ACL8112:
1293 devpriv->max_812_ai_mode0_rangewait = 1;
1294 if (it->options[3] > 0)
1295
1296 devpriv->use_ext_trg = 1;
1297 break;
1298 case BOARD_A821:
1299 devpriv->max_812_ai_mode0_rangewait = 1;
1300 devpriv->mode_reg_int = (dev->irq << 4) & 0xf0;
1301 break;
1302 case BOARD_PCL813B:
1303 case BOARD_PCL813:
1304 case BOARD_ISO813:
1305 case BOARD_ACL8113:
1306
1307 devpriv->max_812_ai_mode0_rangewait = 5;
1308 break;
1309 }
1310
1311 pcl812_reset(dev);
1312
1313 return 0;
1314}
1315
1316static void pcl812_detach(struct comedi_device *dev)
1317{
1318 pcl812_free_dma(dev);
1319 comedi_legacy_detach(dev);
1320}
1321
1322static struct comedi_driver pcl812_driver = {
1323 .driver_name = "pcl812",
1324 .module = THIS_MODULE,
1325 .attach = pcl812_attach,
1326 .detach = pcl812_detach,
1327 .board_name = &boardtypes[0].name,
1328 .num_names = ARRAY_SIZE(boardtypes),
1329 .offset = sizeof(struct pcl812_board),
1330};
1331module_comedi_driver(pcl812_driver);
1332
1333MODULE_AUTHOR("Comedi http://www.comedi.org");
1334MODULE_DESCRIPTION("Comedi low-level driver");
1335MODULE_LICENSE("GPL");
1336
