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[deliverable/linux.git] / drivers / staging / comedi / drivers / das08.c
1 /*
2 * comedi/drivers/das08.c
3 * DAS08 driver
4 *
5 * COMEDI - Linux Control and Measurement Device Interface
6 * Copyright (C) 2000 David A. Schleef <ds@schleef.org>
7 * Copyright (C) 2001,2002,2003 Frank Mori Hess <fmhess@users.sourceforge.net>
8 * Copyright (C) 2004 Salvador E. Tropea <set@users.sf.net> <set@ieee.org>
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
23 *
24 *****************************************************************
25 */
26
27 /*
28 * Driver: das08
29 * Description: DAS-08 compatible boards
30 * Author: Warren Jasper, ds, Frank Hess
31 * Devices: [Keithley Metrabyte] DAS08 (isa-das08),
32 * [ComputerBoards] DAS08 (isa-das08), DAS08-PGM (das08-pgm),
33 * DAS08-PGH (das08-pgh), DAS08-PGL (das08-pgl), DAS08-AOH (das08-aoh),
34 * DAS08-AOL (das08-aol), DAS08-AOM (das08-aom), DAS08/JR-AO (das08/jr-ao),
35 * DAS08/JR-16-AO (das08jr-16-ao), PCI-DAS08 (das08),
36 * PC104-DAS08 (pc104-das08), DAS08/JR/16 (das08jr/16)
37 * Status: works
38 *
39 * This is a rewrite of the das08 and das08jr drivers.
40 *
41 * Options (for ISA cards):
42 * [0] - base io address
43 *
44 * Options (for pci-das08):
45 * [0] - bus (optional)
46 * [1] = slot (optional)
47 *
48 * The das08 driver doesn't support asynchronous commands, since
49 * the cheap das08 hardware doesn't really support them. The
50 * comedi_rt_timer driver can be used to emulate commands for this
51 * driver.
52 */
53
54 #include "../comedidev.h"
55
56 #include <linux/delay.h>
57
58 #include "comedi_pci.h"
59 #include "8255.h"
60 #include "das08.h"
61
62 #define DRV_NAME "das08"
63
64 #define PCI_VENDOR_ID_COMPUTERBOARDS 0x1307
65 #define PCI_DEVICE_ID_PCIDAS08 0x29
66 #define PCIDAS08_SIZE 0x54
67
68 /* pci configuration registers */
69 #define INTCSR 0x4c
70 #define INTR1_ENABLE 0x1
71 #define INTR1_HIGH_POLARITY 0x2
72 #define PCI_INTR_ENABLE 0x40
73 #define INTR1_EDGE_TRIG 0x100 /* requires high polarity */
74 #define CNTRL 0x50
75 #define CNTRL_DIR 0x2
76 #define CNTRL_INTR 0x4
77
78 /*
79 cio-das08.pdf
80
81 "isa-das08"
82
83 0 a/d bits 0-3 start 8 bit
84 1 a/d bits 4-11 start 12 bit
85 2 eoc, ip1-3, irq, mux op1-4, inte, mux
86 3 unused unused
87 4567 8254
88 89ab 8255
89
90 requires hard-wiring for async ai
91
92 */
93
94 #define DAS08_LSB 0
95 #define DAS08_MSB 1
96 #define DAS08_TRIG_12BIT 1
97 #define DAS08_STATUS 2
98 #define DAS08_EOC (1<<7)
99 #define DAS08_IRQ (1<<3)
100 #define DAS08_IP(x) (((x)>>4)&0x7)
101 #define DAS08_CONTROL 2
102 #define DAS08_MUX_MASK 0x7
103 #define DAS08_MUX(x) ((x) & DAS08_MUX_MASK)
104 #define DAS08_INTE (1<<3)
105 #define DAS08_DO_MASK 0xf0
106 #define DAS08_OP(x) (((x) << 4) & DAS08_DO_MASK)
107
108 /*
109 cio-das08jr.pdf
110
111 "das08/jr-ao"
112
113 0 a/d bits 0-3 unused
114 1 a/d bits 4-11 start 12 bit
115 2 eoc, mux mux
116 3 di do
117 4 unused ao0_lsb
118 5 unused ao0_msb
119 6 unused ao1_lsb
120 7 unused ao1_msb
121
122 */
123
124 #define DAS08JR_DIO 3
125 #define DAS08JR_AO_LSB(x) ((x) ? 6 : 4)
126 #define DAS08JR_AO_MSB(x) ((x) ? 7 : 5)
127
128 /*
129 cio-das08_aox.pdf
130
131 "das08-aoh"
132 "das08-aol"
133 "das08-aom"
134
135 0 a/d bits 0-3 start 8 bit
136 1 a/d bits 4-11 start 12 bit
137 2 eoc, ip1-3, irq, mux op1-4, inte, mux
138 3 mux, gain status gain control
139 4567 8254
140 8 unused ao0_lsb
141 9 unused ao0_msb
142 a unused ao1_lsb
143 b unused ao1_msb
144 89ab
145 cdef 8255
146 */
147
148 #define DAS08AO_GAIN_CONTROL 3
149 #define DAS08AO_GAIN_STATUS 3
150
151 #define DAS08AO_AO_LSB(x) ((x) ? 0xa : 8)
152 #define DAS08AO_AO_MSB(x) ((x) ? 0xb : 9)
153 #define DAS08AO_AO_UPDATE 8
154
155 /* gainlist same as _pgx_ below */
156
157 static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
158 struct comedi_insn *insn, unsigned int *data);
159 static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
160 struct comedi_insn *insn, unsigned int *data);
161 static int das08_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
162 struct comedi_insn *insn, unsigned int *data);
163 static int das08jr_di_rbits(struct comedi_device *dev,
164 struct comedi_subdevice *s,
165 struct comedi_insn *insn, unsigned int *data);
166 static int das08jr_do_wbits(struct comedi_device *dev,
167 struct comedi_subdevice *s,
168 struct comedi_insn *insn, unsigned int *data);
169 static int das08jr_ao_winsn(struct comedi_device *dev,
170 struct comedi_subdevice *s,
171 struct comedi_insn *insn, unsigned int *data);
172 static int das08ao_ao_winsn(struct comedi_device *dev,
173 struct comedi_subdevice *s,
174 struct comedi_insn *insn, unsigned int *data);
175 static void i8254_set_mode_low(unsigned int base, int channel,
176 unsigned int mode);
177
178 static const struct comedi_lrange range_das08_pgl = { 9, {
179 BIP_RANGE(10),
180 BIP_RANGE(5),
181 BIP_RANGE(2.5),
182 BIP_RANGE(1.25),
183 BIP_RANGE(0.625),
184 UNI_RANGE(10),
185 UNI_RANGE(5),
186 UNI_RANGE(2.5),
187 UNI_RANGE(1.25)
188 }
189 };
190
191 static const struct comedi_lrange range_das08_pgh = { 12, {
192 BIP_RANGE(10),
193 BIP_RANGE(5),
194 BIP_RANGE(1),
195 BIP_RANGE(0.5),
196 BIP_RANGE(0.1),
197 BIP_RANGE(0.05),
198 BIP_RANGE(0.01),
199 BIP_RANGE(0.005),
200 UNI_RANGE(10),
201 UNI_RANGE(1),
202 UNI_RANGE(0.1),
203 UNI_RANGE(0.01),
204 }
205 };
206
207 static const struct comedi_lrange range_das08_pgm = { 9, {
208 BIP_RANGE(10),
209 BIP_RANGE(5),
210 BIP_RANGE(0.5),
211 BIP_RANGE(0.05),
212 BIP_RANGE(0.01),
213 UNI_RANGE(10),
214 UNI_RANGE(1),
215 UNI_RANGE(0.1),
216 UNI_RANGE(0.01)
217 }
218 }; /*
219 cio-das08jr.pdf
220
221 "das08/jr-ao"
222
223 0 a/d bits 0-3 unused
224 1 a/d bits 4-11 start 12 bit
225 2 eoc, mux mux
226 3 di do
227 4 unused ao0_lsb
228 5 unused ao0_msb
229 6 unused ao1_lsb
230 7 unused ao1_msb
231
232 */
233
234 static const struct comedi_lrange *const das08_ai_lranges[] = {
235 &range_unknown,
236 &range_bipolar5,
237 &range_das08_pgh,
238 &range_das08_pgl,
239 &range_das08_pgm,
240 };
241
242 static const int das08_pgh_gainlist[] = {
243 8, 0, 10, 2, 12, 4, 14, 6, 1, 3, 5, 7
244 };
245 static const int das08_pgl_gainlist[] = { 8, 0, 2, 4, 6, 1, 3, 5, 7 };
246 static const int das08_pgm_gainlist[] = { 8, 0, 10, 12, 14, 9, 11, 13, 15 };
247
248 static const int *const das08_gainlists[] = {
249 NULL,
250 NULL,
251 das08_pgh_gainlist,
252 das08_pgl_gainlist,
253 das08_pgm_gainlist,
254 };
255
256 static const struct das08_board_struct das08_boards[] = {
257 {
258 .name = "isa-das08", /* cio-das08.pdf */
259 .bustype = isa,
260 .ai = das08_ai_rinsn,
261 .ai_nbits = 12,
262 .ai_pg = das08_pg_none,
263 .ai_encoding = das08_encode12,
264 .ao = NULL,
265 .ao_nbits = 12,
266 .di = das08_di_rbits,
267 .do_ = das08_do_wbits,
268 .do_nchan = 4,
269 .i8255_offset = 8,
270 .i8254_offset = 4,
271 .iosize = 16, /* unchecked */
272 },
273 {
274 .name = "das08-pgm", /* cio-das08pgx.pdf */
275 .bustype = isa,
276 .ai = das08_ai_rinsn,
277 .ai_nbits = 12,
278 .ai_pg = das08_pgm,
279 .ai_encoding = das08_encode12,
280 .ao = NULL,
281 .di = das08_di_rbits,
282 .do_ = das08_do_wbits,
283 .do_nchan = 4,
284 .i8255_offset = 0,
285 .i8254_offset = 0x04,
286 .iosize = 16, /* unchecked */
287 },
288 {
289 .name = "das08-pgh", /* cio-das08pgx.pdf */
290 .bustype = isa,
291 .ai = das08_ai_rinsn,
292 .ai_nbits = 12,
293 .ai_pg = das08_pgh,
294 .ai_encoding = das08_encode12,
295 .ao = NULL,
296 .di = das08_di_rbits,
297 .do_ = das08_do_wbits,
298 .do_nchan = 4,
299 .i8255_offset = 0,
300 .i8254_offset = 0x04,
301 .iosize = 16, /* unchecked */
302 },
303 {
304 .name = "das08-pgl", /* cio-das08pgx.pdf */
305 .bustype = isa,
306 .ai = das08_ai_rinsn,
307 .ai_nbits = 12,
308 .ai_pg = das08_pgl,
309 .ai_encoding = das08_encode12,
310 .ao = NULL,
311 .di = das08_di_rbits,
312 .do_ = das08_do_wbits,
313 .do_nchan = 4,
314 .i8255_offset = 0,
315 .i8254_offset = 0x04,
316 .iosize = 16, /* unchecked */
317 },
318 {
319 .name = "das08-aoh", /* cio-das08_aox.pdf */
320 .bustype = isa,
321 .ai = das08_ai_rinsn,
322 .ai_nbits = 12,
323 .ai_pg = das08_pgh,
324 .ai_encoding = das08_encode12,
325 .ao = das08ao_ao_winsn, /* 8 */
326 .ao_nbits = 12,
327 .di = das08_di_rbits,
328 .do_ = das08_do_wbits,
329 .do_nchan = 4,
330 .i8255_offset = 0x0c,
331 .i8254_offset = 0x04,
332 .iosize = 16, /* unchecked */
333 },
334 {
335 .name = "das08-aol", /* cio-das08_aox.pdf */
336 .bustype = isa,
337 .ai = das08_ai_rinsn,
338 .ai_nbits = 12,
339 .ai_pg = das08_pgl,
340 .ai_encoding = das08_encode12,
341 .ao = das08ao_ao_winsn, /* 8 */
342 .ao_nbits = 12,
343 .di = das08_di_rbits,
344 .do_ = das08_do_wbits,
345 .do_nchan = 4,
346 .i8255_offset = 0x0c,
347 .i8254_offset = 0x04,
348 .iosize = 16, /* unchecked */
349 },
350 {
351 .name = "das08-aom", /* cio-das08_aox.pdf */
352 .bustype = isa,
353 .ai = das08_ai_rinsn,
354 .ai_nbits = 12,
355 .ai_pg = das08_pgm,
356 .ai_encoding = das08_encode12,
357 .ao = das08ao_ao_winsn, /* 8 */
358 .ao_nbits = 12,
359 .di = das08_di_rbits,
360 .do_ = das08_do_wbits,
361 .do_nchan = 4,
362 .i8255_offset = 0x0c,
363 .i8254_offset = 0x04,
364 .iosize = 16, /* unchecked */
365 },
366 {
367 .name = "das08/jr-ao", /* cio-das08-jr-ao.pdf */
368 .bustype = isa,
369 .ai = das08_ai_rinsn,
370 .ai_nbits = 12,
371 .ai_pg = das08_pg_none,
372 .ai_encoding = das08_encode12,
373 .ao = das08jr_ao_winsn,
374 .ao_nbits = 12,
375 .di = das08jr_di_rbits,
376 .do_ = das08jr_do_wbits,
377 .do_nchan = 8,
378 .i8255_offset = 0,
379 .i8254_offset = 0,
380 .iosize = 16, /* unchecked */
381 },
382 {
383 .name = "das08jr-16-ao", /* cio-das08jr-16-ao.pdf */
384 .bustype = isa,
385 .ai = das08_ai_rinsn,
386 .ai_nbits = 16,
387 .ai_pg = das08_pg_none,
388 .ai_encoding = das08_encode12,
389 .ao = das08jr_ao_winsn,
390 .ao_nbits = 16,
391 .di = das08jr_di_rbits,
392 .do_ = das08jr_do_wbits,
393 .do_nchan = 8,
394 .i8255_offset = 0,
395 .i8254_offset = 0x04,
396 .iosize = 16, /* unchecked */
397 },
398 #ifdef CONFIG_COMEDI_PCI
399 {
400 .name = "das08", /* pci-das08 */
401 .id = PCI_DEVICE_ID_PCIDAS08,
402 .bustype = pci,
403 .ai = das08_ai_rinsn,
404 .ai_nbits = 12,
405 .ai_pg = das08_bipolar5,
406 .ai_encoding = das08_encode12,
407 .ao = NULL,
408 .ao_nbits = 0,
409 .di = das08_di_rbits,
410 .do_ = das08_do_wbits,
411 .do_nchan = 4,
412 .i8255_offset = 0,
413 .i8254_offset = 4,
414 .iosize = 8,
415 },
416 #endif
417 {
418 .name = "pc104-das08",
419 .bustype = pc104,
420 .ai = das08_ai_rinsn,
421 .ai_nbits = 12,
422 .ai_pg = das08_pg_none,
423 .ai_encoding = das08_encode12,
424 .ao = NULL,
425 .ao_nbits = 0,
426 .di = das08_di_rbits,
427 .do_ = das08_do_wbits,
428 .do_nchan = 4,
429 .i8255_offset = 0,
430 .i8254_offset = 4,
431 .iosize = 16, /* unchecked */
432 },
433 #if 0
434 {
435 .name = "das08/f",
436 },
437 {
438 .name = "das08jr",
439 },
440 #endif
441 {
442 .name = "das08jr/16",
443 .bustype = isa,
444 .ai = das08_ai_rinsn,
445 .ai_nbits = 16,
446 .ai_pg = das08_pg_none,
447 .ai_encoding = das08_encode16,
448 .ao = NULL,
449 .ao_nbits = 0,
450 .di = das08jr_di_rbits,
451 .do_ = das08jr_do_wbits,
452 .do_nchan = 8,
453 .i8255_offset = 0,
454 .i8254_offset = 0,
455 .iosize = 16, /* unchecked */
456 },
457 #if 0
458 {
459 .name = "das48-pga", /* cio-das48-pga.pdf */
460 },
461 {
462 .name = "das08-pga-g2", /* a KM board */
463 },
464 #endif
465 };
466
467 #ifdef CONFIG_COMEDI_PCMCIA
468 struct das08_board_struct das08_cs_boards[NUM_DAS08_CS_BOARDS] = {
469 {
470 .name = "pcm-das08",
471 .id = 0x0, /* XXX */
472 .bustype = pcmcia,
473 .ai = das08_ai_rinsn,
474 .ai_nbits = 12,
475 .ai_pg = das08_bipolar5,
476 .ai_encoding = das08_pcm_encode12,
477 .ao = NULL,
478 .ao_nbits = 0,
479 .di = das08_di_rbits,
480 .do_ = das08_do_wbits,
481 .do_nchan = 3,
482 .i8255_offset = 0,
483 .i8254_offset = 0,
484 .iosize = 16,
485 },
486 /* duplicate so driver name can be used also */
487 {
488 .name = "das08_cs",
489 .id = 0x0, /* XXX */
490 .bustype = pcmcia,
491 .ai = das08_ai_rinsn,
492 .ai_nbits = 12,
493 .ai_pg = das08_bipolar5,
494 .ai_encoding = das08_pcm_encode12,
495 .ao = NULL,
496 .ao_nbits = 0,
497 .di = das08_di_rbits,
498 .do_ = das08_do_wbits,
499 .do_nchan = 3,
500 .i8255_offset = 0,
501 .i8254_offset = 0,
502 .iosize = 16,
503 },
504 };
505 #endif
506
507 #ifdef CONFIG_COMEDI_PCI
508 static DEFINE_PCI_DEVICE_TABLE(das08_pci_table) = {
509 {
510 PCI_VENDOR_ID_COMPUTERBOARDS, PCI_DEVICE_ID_PCIDAS08,
511 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, {
512 0}
513 };
514
515 MODULE_DEVICE_TABLE(pci, das08_pci_table);
516 #endif
517
518 #define devpriv ((struct das08_private_struct *)dev->private)
519 #define thisboard ((const struct das08_board_struct *)dev->board_ptr)
520
521 #define TIMEOUT 100000
522
523 static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
524 struct comedi_insn *insn, unsigned int *data)
525 {
526 int i, n;
527 int chan;
528 int range;
529 int lsb, msb;
530
531 chan = CR_CHAN(insn->chanspec);
532 range = CR_RANGE(insn->chanspec);
533
534 /* clear crap */
535 inb(dev->iobase + DAS08_LSB);
536 inb(dev->iobase + DAS08_MSB);
537
538 /* set multiplexer */
539 /* lock to prevent race with digital output */
540 spin_lock(&dev->spinlock);
541 devpriv->do_mux_bits &= ~DAS08_MUX_MASK;
542 devpriv->do_mux_bits |= DAS08_MUX(chan);
543 outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
544 spin_unlock(&dev->spinlock);
545
546 if (s->range_table->length > 1) {
547 /* set gain/range */
548 range = CR_RANGE(insn->chanspec);
549 outb(devpriv->pg_gainlist[range],
550 dev->iobase + DAS08AO_GAIN_CONTROL);
551 }
552
553 for (n = 0; n < insn->n; n++) {
554 /* clear over-range bits for 16-bit boards */
555 if (thisboard->ai_nbits == 16)
556 if (inb(dev->iobase + DAS08_MSB) & 0x80)
557 printk(KERN_INFO "das08: over-range\n");
558
559 /* trigger conversion */
560 outb_p(0, dev->iobase + DAS08_TRIG_12BIT);
561
562 for (i = 0; i < TIMEOUT; i++) {
563 if (!(inb(dev->iobase + DAS08_STATUS) & DAS08_EOC))
564 break;
565 }
566 if (i == TIMEOUT) {
567 printk(KERN_ERR "das08: timeout\n");
568 return -ETIME;
569 }
570 msb = inb(dev->iobase + DAS08_MSB);
571 lsb = inb(dev->iobase + DAS08_LSB);
572 if (thisboard->ai_encoding == das08_encode12) {
573 data[n] = (lsb >> 4) | (msb << 4);
574 } else if (thisboard->ai_encoding == das08_pcm_encode12) {
575 data[n] = (msb << 8) + lsb;
576 } else if (thisboard->ai_encoding == das08_encode16) {
577 /* FPOS 16-bit boards are sign-magnitude */
578 if (msb & 0x80)
579 data[n] = (1 << 15) | lsb | ((msb & 0x7f) << 8);
580 else
581 data[n] = (1 << 15) - (lsb | (msb & 0x7f) << 8);
582 } else {
583 comedi_error(dev, "bug! unknown ai encoding");
584 return -1;
585 }
586 }
587
588 return n;
589 }
590
591 static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
592 struct comedi_insn *insn, unsigned int *data)
593 {
594 data[0] = 0;
595 data[1] = DAS08_IP(inb(dev->iobase + DAS08_STATUS));
596
597 return 2;
598 }
599
600 static int das08_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
601 struct comedi_insn *insn, unsigned int *data)
602 {
603 int wbits;
604
605 /* get current settings of digital output lines */
606 wbits = (devpriv->do_mux_bits >> 4) & 0xf;
607 /* null bits we are going to set */
608 wbits &= ~data[0];
609 /* set new bit values */
610 wbits |= data[0] & data[1];
611 /* remember digital output bits */
612 /* prevent race with setting of analog input mux */
613 spin_lock(&dev->spinlock);
614 devpriv->do_mux_bits &= ~DAS08_DO_MASK;
615 devpriv->do_mux_bits |= DAS08_OP(wbits);
616 outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
617 spin_unlock(&dev->spinlock);
618
619 data[1] = wbits;
620
621 return 2;
622 }
623
624 static int das08jr_di_rbits(struct comedi_device *dev,
625 struct comedi_subdevice *s,
626 struct comedi_insn *insn, unsigned int *data)
627 {
628 data[0] = 0;
629 data[1] = inb(dev->iobase + DAS08JR_DIO);
630
631 return 2;
632 }
633
634 static int das08jr_do_wbits(struct comedi_device *dev,
635 struct comedi_subdevice *s,
636 struct comedi_insn *insn, unsigned int *data)
637 {
638 /* null bits we are going to set */
639 devpriv->do_bits &= ~data[0];
640 /* set new bit values */
641 devpriv->do_bits |= data[0] & data[1];
642 outb(devpriv->do_bits, dev->iobase + DAS08JR_DIO);
643
644 data[1] = devpriv->do_bits;
645
646 return 2;
647 }
648
649 static int das08jr_ao_winsn(struct comedi_device *dev,
650 struct comedi_subdevice *s,
651 struct comedi_insn *insn, unsigned int *data)
652 {
653 int n;
654 int lsb, msb;
655 int chan;
656
657 lsb = data[0] & 0xff;
658 msb = (data[0] >> 8) & 0xf;
659
660 chan = CR_CHAN(insn->chanspec);
661
662 for (n = 0; n < insn->n; n++) {
663 #if 0
664 outb(lsb, dev->iobase + devpriv->ao_offset_lsb[chan]);
665 outb(msb, dev->iobase + devpriv->ao_offset_msb[chan]);
666 #else
667 outb(lsb, dev->iobase + DAS08JR_AO_LSB(chan));
668 outb(msb, dev->iobase + DAS08JR_AO_MSB(chan));
669 #endif
670
671 /* load DACs */
672 inb(dev->iobase + DAS08JR_DIO);
673 }
674
675 return n;
676 }
677
678 /*
679 *
680 * The -aox boards have the DACs at a different offset and use
681 * a different method to force an update.
682 *
683 */
684 static int das08ao_ao_winsn(struct comedi_device *dev,
685 struct comedi_subdevice *s,
686 struct comedi_insn *insn, unsigned int *data)
687 {
688 int n;
689 int lsb, msb;
690 int chan;
691
692 lsb = data[0] & 0xff;
693 msb = (data[0] >> 8) & 0xf;
694
695 chan = CR_CHAN(insn->chanspec);
696
697 for (n = 0; n < insn->n; n++) {
698 #if 0
699 outb(lsb, dev->iobase + devpriv->ao_offset_lsb[chan]);
700 outb(msb, dev->iobase + devpriv->ao_offset_msb[chan]);
701 #else
702 outb(lsb, dev->iobase + DAS08AO_AO_LSB(chan));
703 outb(msb, dev->iobase + DAS08AO_AO_MSB(chan));
704 #endif
705
706 /* load DACs */
707 inb(dev->iobase + DAS08AO_AO_UPDATE);
708 }
709
710 return n;
711 }
712
713 static unsigned int i8254_read_channel_low(unsigned int base, int chan)
714 {
715 unsigned int msb, lsb;
716
717 /* The following instructions must be in order.
718 We must avoid other process reading the counter's value in the
719 middle.
720 The spin_lock isn't needed since ioctl calls grab the big kernel
721 lock automatically */
722 /*spin_lock(sp); */
723 outb(chan << 6, base + I8254_CTRL);
724 base += chan;
725 lsb = inb(base);
726 msb = inb(base);
727 /*spin_unlock(sp); */
728
729 return lsb | (msb << 8);
730 }
731
732 static void i8254_write_channel_low(unsigned int base, int chan,
733 unsigned int value)
734 {
735 unsigned int msb, lsb;
736
737 lsb = value & 0xFF;
738 msb = value >> 8;
739
740 /* write lsb, then msb */
741 base += chan;
742 /* See comments in i8254_read_channel_low */
743 /*spin_lock(sp); */
744 outb(lsb, base);
745 outb(msb, base);
746 /*spin_unlock(sp); */
747 }
748
749 static unsigned int i8254_read_channel(struct i8254_struct *st, int channel)
750 {
751 int chan = st->logic2phys[channel];
752
753 return i8254_read_channel_low(st->iobase, chan);
754 }
755
756 static void i8254_write_channel(struct i8254_struct *st, int channel,
757 unsigned int value)
758 {
759 int chan = st->logic2phys[channel];
760
761 i8254_write_channel_low(st->iobase, chan, value);
762 }
763
764 static void i8254_initialize(struct i8254_struct *st)
765 {
766 int i;
767 for (i = 0; i < 3; ++i)
768 i8254_set_mode_low(st->iobase, i, st->mode[i]);
769 }
770
771 static void i8254_set_mode_low(unsigned int base, int channel,
772 unsigned int mode)
773 {
774 outb((channel << 6) | 0x30 | (mode & 0x0F), base + I8254_CTRL);
775 }
776
777 static void i8254_set_mode(struct i8254_struct *st, int channel,
778 unsigned int mode)
779 {
780 int chan = st->logic2phys[channel];
781
782 st->mode[chan] = mode;
783 return i8254_set_mode_low(st->iobase, chan, mode);
784 }
785
786 static unsigned int i8254_read_status_low(unsigned int base, int channel)
787 {
788 outb(0xE0 | (2 << channel), base + I8254_CTRL);
789 return inb(base + channel);
790 }
791
792 static unsigned int i8254_read_status(struct i8254_struct *st, int channel)
793 {
794 int chan = st->logic2phys[channel];
795
796 return i8254_read_status_low(st->iobase, chan);
797 }
798
799 static int das08_counter_read(struct comedi_device *dev,
800 struct comedi_subdevice *s,
801 struct comedi_insn *insn, unsigned int *data)
802 {
803 int chan = insn->chanspec;
804
805 /* printk("Reading counter channel %d ",chan); */
806 data[0] = i8254_read_channel(&devpriv->i8254, chan);
807 /* printk("=> 0x%08X\n",data[0]); */
808
809 return 1;
810 }
811
812 static int das08_counter_write(struct comedi_device *dev,
813 struct comedi_subdevice *s,
814 struct comedi_insn *insn, unsigned int *data)
815 {
816 int chan = insn->chanspec;
817
818 /* printk("Writing counter channel %d with 0x%04X\n",chan,data[0]); */
819 i8254_write_channel(&devpriv->i8254, chan, data[0]);
820
821 return 1;
822 }
823
824 static int das08_counter_config(struct comedi_device *dev,
825 struct comedi_subdevice *s,
826 struct comedi_insn *insn, unsigned int *data)
827 {
828 int chan = insn->chanspec;
829
830 if (insn->n != 2)
831 return -EINVAL;
832
833 switch (data[0]) {
834 case INSN_CONFIG_SET_COUNTER_MODE:
835 i8254_set_mode(&devpriv->i8254, chan, data[1]);
836 break;
837 case INSN_CONFIG_8254_READ_STATUS:
838 data[1] = i8254_read_status(&devpriv->i8254, chan);
839 break;
840 default:
841 return -EINVAL;
842 break;
843 }
844 return 2;
845 }
846
847 static int das08_attach(struct comedi_device *dev, struct comedi_devconfig *it);
848
849 static struct comedi_driver driver_das08 = {
850 .driver_name = DRV_NAME,
851 .module = THIS_MODULE,
852 .attach = das08_attach,
853 .detach = das08_common_detach,
854 .board_name = &das08_boards[0].name,
855 .num_names = sizeof(das08_boards) / sizeof(struct das08_board_struct),
856 .offset = sizeof(struct das08_board_struct),
857 };
858
859 int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
860 {
861 struct comedi_subdevice *s;
862 int ret;
863
864 /* allocate ioports for non-pcmcia, non-pci boards */
865 if ((thisboard->bustype != pcmcia) && (thisboard->bustype != pci)) {
866 printk(KERN_INFO " iobase 0x%lx\n", iobase);
867 if (!request_region(iobase, thisboard->iosize, DRV_NAME)) {
868 printk(KERN_ERR " I/O port conflict\n");
869 return -EIO;
870 }
871 }
872 dev->iobase = iobase;
873
874 dev->board_name = thisboard->name;
875
876 ret = alloc_subdevices(dev, 6);
877 if (ret < 0)
878 return ret;
879
880 s = dev->subdevices + 0;
881 /* ai */
882 if (thisboard->ai) {
883 s->type = COMEDI_SUBD_AI;
884 /* XXX some boards actually have differential
885 * inputs instead of single ended.
886 * The driver does nothing with arefs though,
887 * so it's no big deal.
888 */
889 s->subdev_flags = SDF_READABLE | SDF_GROUND;
890 s->n_chan = 8;
891 s->maxdata = (1 << thisboard->ai_nbits) - 1;
892 s->range_table = das08_ai_lranges[thisboard->ai_pg];
893 s->insn_read = thisboard->ai;
894 devpriv->pg_gainlist = das08_gainlists[thisboard->ai_pg];
895 } else {
896 s->type = COMEDI_SUBD_UNUSED;
897 }
898
899 s = dev->subdevices + 1;
900 /* ao */
901 if (thisboard->ao) {
902 s->type = COMEDI_SUBD_AO;
903 /* XXX lacks read-back insn */
904 s->subdev_flags = SDF_WRITABLE;
905 s->n_chan = 2;
906 s->maxdata = (1 << thisboard->ao_nbits) - 1;
907 s->range_table = &range_bipolar5;
908 s->insn_write = thisboard->ao;
909 } else {
910 s->type = COMEDI_SUBD_UNUSED;
911 }
912
913 s = dev->subdevices + 2;
914 /* di */
915 if (thisboard->di) {
916 s->type = COMEDI_SUBD_DI;
917 s->subdev_flags = SDF_READABLE;
918 s->n_chan = (thisboard->di == das08_di_rbits) ? 3 : 8;
919 s->maxdata = 1;
920 s->range_table = &range_digital;
921 s->insn_bits = thisboard->di;
922 } else {
923 s->type = COMEDI_SUBD_UNUSED;
924 }
925
926 s = dev->subdevices + 3;
927 /* do */
928 if (thisboard->do_) {
929 s->type = COMEDI_SUBD_DO;
930 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
931 s->n_chan = thisboard->do_nchan;
932 s->maxdata = 1;
933 s->range_table = &range_digital;
934 s->insn_bits = thisboard->do_;
935 } else {
936 s->type = COMEDI_SUBD_UNUSED;
937 }
938
939 s = dev->subdevices + 4;
940 /* 8255 */
941 if (thisboard->i8255_offset != 0) {
942 subdev_8255_init(dev, s, NULL, (unsigned long)(dev->iobase +
943 thisboard->
944 i8255_offset));
945 } else {
946 s->type = COMEDI_SUBD_UNUSED;
947 }
948
949 s = dev->subdevices + 5;
950 /* 8254 */
951 if (thisboard->i8254_offset != 0) {
952 s->type = COMEDI_SUBD_COUNTER;
953 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
954 s->n_chan = 3;
955 s->maxdata = 0xFFFF;
956 s->insn_read = das08_counter_read;
957 s->insn_write = das08_counter_write;
958 s->insn_config = das08_counter_config;
959 /* Set-up the 8254 structure */
960 devpriv->i8254.channels = 3;
961 devpriv->i8254.logic2phys[0] = 0;
962 devpriv->i8254.logic2phys[1] = 1;
963 devpriv->i8254.logic2phys[2] = 2;
964 devpriv->i8254.iobase = iobase + thisboard->i8254_offset;
965 devpriv->i8254.mode[0] =
966 devpriv->i8254.mode[1] =
967 devpriv->i8254.mode[2] = I8254_MODE0 | I8254_BINARY;
968 i8254_initialize(&devpriv->i8254);
969 } else {
970 s->type = COMEDI_SUBD_UNUSED;
971 }
972
973 return 0;
974 }
975 EXPORT_SYMBOL_GPL(das08_common_attach);
976
977 static int das08_attach(struct comedi_device *dev, struct comedi_devconfig *it)
978 {
979 int ret;
980 unsigned long iobase;
981 #ifdef CONFIG_COMEDI_PCI
982 unsigned long pci_iobase = 0;
983 struct pci_dev *pdev;
984 #endif
985
986 ret = alloc_private(dev, sizeof(struct das08_private_struct));
987 if (ret < 0)
988 return ret;
989
990 printk(KERN_INFO "comedi%d: das08: ", dev->minor);
991 /* deal with a pci board */
992 if (thisboard->bustype == pci) {
993 #ifdef CONFIG_COMEDI_PCI
994 if (it->options[0] || it->options[1]) {
995 printk("bus %i slot %i ",
996 it->options[0], it->options[1]);
997 }
998 printk("\n");
999 /* find card */
1000 for (pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, NULL);
1001 pdev != NULL;
1002 pdev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, pdev)) {
1003 if (pdev->vendor == PCI_VENDOR_ID_COMPUTERBOARDS
1004 && pdev->device == PCI_DEVICE_ID_PCIDAS08) {
1005 if (it->options[0] || it->options[1]) {
1006 if (pdev->bus->number == it->options[0]
1007 && PCI_SLOT(pdev->devfn) ==
1008 it->options[1]) {
1009 break;
1010 }
1011 } else {
1012 break;
1013 }
1014 }
1015 }
1016 if (!pdev) {
1017 printk(KERN_ERR "No pci das08 cards found\n");
1018 return -EIO;
1019 }
1020 devpriv->pdev = pdev;
1021 /* enable PCI device and reserve I/O spaces */
1022 if (comedi_pci_enable(pdev, DRV_NAME)) {
1023 printk(KERN_ERR " Error enabling PCI device and "
1024 "requesting regions\n");
1025 return -EIO;
1026 }
1027 /* read base addresses */
1028 pci_iobase = pci_resource_start(pdev, 1);
1029 iobase = pci_resource_start(pdev, 2);
1030 printk(KERN_INFO "pcibase 0x%lx iobase 0x%lx\n",
1031 pci_iobase, iobase);
1032 devpriv->pci_iobase = pci_iobase;
1033 #if 0
1034 /* We could enable to pci-das08's interrupt here to make it possible
1035 * to do timed input in this driver, but there is little point since
1036 * conversions would have to be started by the interrupt handler
1037 * so you might as well use comedi_rt_timer to emulate commands
1038 */
1039 /* set source of interrupt trigger to counter2 output */
1040 outb(CNTRL_INTR | CNTRL_DIR, pci_iobase + CNTRL);
1041 /* Enable local interrupt 1 and pci interrupt */
1042 outw(INTR1_ENABLE | PCI_INTR_ENABLE, pci_iobase + INTCSR);
1043 #endif
1044 #else /* CONFIG_COMEDI_PCI */
1045 printk(KERN_ERR "this driver has not been built with PCI support.\n");
1046 return -EINVAL;
1047 #endif /* CONFIG_COMEDI_PCI */
1048 } else {
1049 iobase = it->options[0];
1050 }
1051 printk(KERN_INFO "\n");
1052
1053 return das08_common_attach(dev, iobase);
1054 }
1055
1056
1057 int das08_common_detach(struct comedi_device *dev)
1058 {
1059 printk(KERN_INFO "comedi%d: das08: remove\n", dev->minor);
1060
1061 if (dev->subdevices)
1062 subdev_8255_cleanup(dev, dev->subdevices + 4);
1063
1064 /* deallocate ioports for non-pcmcia, non-pci boards */
1065 if ((thisboard->bustype != pcmcia) && (thisboard->bustype != pci)) {
1066 if (dev->iobase)
1067 release_region(dev->iobase, thisboard->iosize);
1068 }
1069 #ifdef CONFIG_COMEDI_PCI
1070 if (devpriv) {
1071 if (devpriv->pdev) {
1072 if (devpriv->pci_iobase)
1073 comedi_pci_disable(devpriv->pdev);
1074
1075 pci_dev_put(devpriv->pdev);
1076 }
1077 }
1078 #endif
1079
1080 return 0;
1081 }
1082 EXPORT_SYMBOL_GPL(das08_common_detach);
1083
1084 #ifdef CONFIG_COMEDI_PCI
1085 COMEDI_PCI_INITCLEANUP(driver_das08, das08_pci_table);
1086 #else
1087 static int __init driver_das08_init_module(void)
1088 {
1089 return comedi_driver_register(&driver_das08);
1090 }
1091
1092 static void __exit driver_das08_cleanup_module(void)
1093 {
1094 comedi_driver_unregister(&driver_das08);
1095 }
1096
1097 module_init(driver_das08_init_module);
1098 module_exit(driver_das08_cleanup_module);
1099 #endif
1100
1101 #ifdef CONFIG_COMEDI_PCMCIA
1102 EXPORT_SYMBOL_GPL(das08_cs_boards);
1103 #endif
1104
1105 MODULE_AUTHOR("Comedi http://www.comedi.org");
1106 MODULE_DESCRIPTION("Comedi low-level driver");
1107 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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