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staging: comedi: remove inline alloc_private()
[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 (pci-das08),
36 * PC104-DAS08 (pc104-das08), DAS08/JR/16 (das08jr/16)
37 * Updated: Fri, 31 Aug 2012 19:19:06 +0100
38 * Status: works
39 *
40 * This is a rewrite of the das08 and das08jr drivers.
41 *
42 * Options (for ISA cards):
43 * [0] - base io address
44 *
45 * Manual configuration of PCI cards is not supported; they are
46 * configured automatically.
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 "8255.h"
59 #include "8253.h"
60 #include "das08.h"
61
62 #define DRV_NAME "das08"
63
64 #define DO_ISA IS_ENABLED(CONFIG_COMEDI_DAS08_ISA)
65 #define DO_PCI IS_ENABLED(CONFIG_COMEDI_DAS08_PCI)
66 #define DO_COMEDI_DRIVER_REGISTER (DO_ISA || DO_PCI)
67
68 #define PCI_VENDOR_ID_COMPUTERBOARDS 0x1307
69 #define PCI_DEVICE_ID_PCIDAS08 0x29
70 #define PCIDAS08_SIZE 0x54
71
72 /* pci configuration registers */
73 #define INTCSR 0x4c
74 #define INTR1_ENABLE 0x1
75 #define INTR1_HIGH_POLARITY 0x2
76 #define PCI_INTR_ENABLE 0x40
77 #define INTR1_EDGE_TRIG 0x100 /* requires high polarity */
78 #define CNTRL 0x50
79 #define CNTRL_DIR 0x2
80 #define CNTRL_INTR 0x4
81
82 /*
83 cio-das08.pdf
84
85 "isa-das08"
86
87 0 a/d bits 0-3 start 8 bit
88 1 a/d bits 4-11 start 12 bit
89 2 eoc, ip1-3, irq, mux op1-4, inte, mux
90 3 unused unused
91 4567 8254
92 89ab 8255
93
94 requires hard-wiring for async ai
95
96 */
97
98 #define DAS08_LSB 0
99 #define DAS08_MSB 1
100 #define DAS08_TRIG_12BIT 1
101 #define DAS08_STATUS 2
102 #define DAS08_EOC (1<<7)
103 #define DAS08_IRQ (1<<3)
104 #define DAS08_IP(x) (((x)>>4)&0x7)
105 #define DAS08_CONTROL 2
106 #define DAS08_MUX_MASK 0x7
107 #define DAS08_MUX(x) ((x) & DAS08_MUX_MASK)
108 #define DAS08_INTE (1<<3)
109 #define DAS08_DO_MASK 0xf0
110 #define DAS08_OP(x) (((x) << 4) & DAS08_DO_MASK)
111
112 /*
113 cio-das08jr.pdf
114
115 "das08/jr-ao"
116
117 0 a/d bits 0-3 unused
118 1 a/d bits 4-11 start 12 bit
119 2 eoc, mux mux
120 3 di do
121 4 unused ao0_lsb
122 5 unused ao0_msb
123 6 unused ao1_lsb
124 7 unused ao1_msb
125
126 */
127
128 #define DAS08JR_DIO 3
129 #define DAS08JR_AO_LSB(x) ((x) ? 6 : 4)
130 #define DAS08JR_AO_MSB(x) ((x) ? 7 : 5)
131
132 /*
133 cio-das08_aox.pdf
134
135 "das08-aoh"
136 "das08-aol"
137 "das08-aom"
138
139 0 a/d bits 0-3 start 8 bit
140 1 a/d bits 4-11 start 12 bit
141 2 eoc, ip1-3, irq, mux op1-4, inte, mux
142 3 mux, gain status gain control
143 4567 8254
144 8 unused ao0_lsb
145 9 unused ao0_msb
146 a unused ao1_lsb
147 b unused ao1_msb
148 89ab
149 cdef 8255
150 */
151
152 #define DAS08AO_GAIN_CONTROL 3
153 #define DAS08AO_GAIN_STATUS 3
154
155 #define DAS08AO_AO_LSB(x) ((x) ? 0xa : 8)
156 #define DAS08AO_AO_MSB(x) ((x) ? 0xb : 9)
157 #define DAS08AO_AO_UPDATE 8
158
159 /* gainlist same as _pgx_ below */
160
161 static const struct comedi_lrange range_das08_pgl = { 9, {
162 BIP_RANGE(10),
163 BIP_RANGE(5),
164 BIP_RANGE(2.5),
165 BIP_RANGE(1.25),
166 BIP_RANGE(0.625),
167 UNI_RANGE(10),
168 UNI_RANGE(5),
169 UNI_RANGE(2.5),
170 UNI_RANGE(1.25)
171 }
172 };
173
174 static const struct comedi_lrange range_das08_pgh = { 12, {
175 BIP_RANGE(10),
176 BIP_RANGE(5),
177 BIP_RANGE(1),
178 BIP_RANGE(0.5),
179 BIP_RANGE(0.1),
180 BIP_RANGE(0.05),
181 BIP_RANGE(0.01),
182 BIP_RANGE(0.005),
183 UNI_RANGE(10),
184 UNI_RANGE(1),
185 UNI_RANGE(0.1),
186 UNI_RANGE(0.01),
187 }
188 };
189
190 static const struct comedi_lrange range_das08_pgm = { 9, {
191 BIP_RANGE(10),
192 BIP_RANGE(5),
193 BIP_RANGE(0.5),
194 BIP_RANGE(0.05),
195 BIP_RANGE(0.01),
196 UNI_RANGE(10),
197 UNI_RANGE(1),
198 UNI_RANGE(0.1),
199 UNI_RANGE(0.01)
200 }
201 }; /*
202 cio-das08jr.pdf
203
204 "das08/jr-ao"
205
206 0 a/d bits 0-3 unused
207 1 a/d bits 4-11 start 12 bit
208 2 eoc, mux mux
209 3 di do
210 4 unused ao0_lsb
211 5 unused ao0_msb
212 6 unused ao1_lsb
213 7 unused ao1_msb
214
215 */
216
217 static const struct comedi_lrange *const das08_ai_lranges[] = {
218 &range_unknown,
219 &range_bipolar5,
220 &range_das08_pgh,
221 &range_das08_pgl,
222 &range_das08_pgm,
223 };
224
225 static const int das08_pgh_gainlist[] = {
226 8, 0, 10, 2, 12, 4, 14, 6, 1, 3, 5, 7
227 };
228 static const int das08_pgl_gainlist[] = { 8, 0, 2, 4, 6, 1, 3, 5, 7 };
229 static const int das08_pgm_gainlist[] = { 8, 0, 10, 12, 14, 9, 11, 13, 15 };
230
231 static const int *const das08_gainlists[] = {
232 NULL,
233 NULL,
234 das08_pgh_gainlist,
235 das08_pgl_gainlist,
236 das08_pgm_gainlist,
237 };
238
239 static inline bool is_isa_board(const struct das08_board_struct *board)
240 {
241 return DO_ISA && board->bustype == isa;
242 }
243
244 static inline bool is_pci_board(const struct das08_board_struct *board)
245 {
246 return DO_PCI && board->bustype == pci;
247 }
248
249 #define TIMEOUT 100000
250
251 static int das08_ai_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
252 struct comedi_insn *insn, unsigned int *data)
253 {
254 const struct das08_board_struct *thisboard = comedi_board(dev);
255 struct das08_private_struct *devpriv = dev->private;
256 int i, n;
257 int chan;
258 int range;
259 int lsb, msb;
260
261 chan = CR_CHAN(insn->chanspec);
262 range = CR_RANGE(insn->chanspec);
263
264 /* clear crap */
265 inb(dev->iobase + DAS08_LSB);
266 inb(dev->iobase + DAS08_MSB);
267
268 /* set multiplexer */
269 /* lock to prevent race with digital output */
270 spin_lock(&dev->spinlock);
271 devpriv->do_mux_bits &= ~DAS08_MUX_MASK;
272 devpriv->do_mux_bits |= DAS08_MUX(chan);
273 outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
274 spin_unlock(&dev->spinlock);
275
276 if (s->range_table->length > 1) {
277 /* set gain/range */
278 range = CR_RANGE(insn->chanspec);
279 outb(devpriv->pg_gainlist[range],
280 dev->iobase + DAS08AO_GAIN_CONTROL);
281 }
282
283 for (n = 0; n < insn->n; n++) {
284 /* clear over-range bits for 16-bit boards */
285 if (thisboard->ai_nbits == 16)
286 if (inb(dev->iobase + DAS08_MSB) & 0x80)
287 dev_info(dev->class_dev, "over-range\n");
288
289 /* trigger conversion */
290 outb_p(0, dev->iobase + DAS08_TRIG_12BIT);
291
292 for (i = 0; i < TIMEOUT; i++) {
293 if (!(inb(dev->iobase + DAS08_STATUS) & DAS08_EOC))
294 break;
295 }
296 if (i == TIMEOUT) {
297 dev_err(dev->class_dev, "timeout\n");
298 return -ETIME;
299 }
300 msb = inb(dev->iobase + DAS08_MSB);
301 lsb = inb(dev->iobase + DAS08_LSB);
302 if (thisboard->ai_encoding == das08_encode12) {
303 data[n] = (lsb >> 4) | (msb << 4);
304 } else if (thisboard->ai_encoding == das08_pcm_encode12) {
305 data[n] = (msb << 8) + lsb;
306 } else if (thisboard->ai_encoding == das08_encode16) {
307 /* FPOS 16-bit boards are sign-magnitude */
308 if (msb & 0x80)
309 data[n] = (1 << 15) | lsb | ((msb & 0x7f) << 8);
310 else
311 data[n] = (1 << 15) - (lsb | (msb & 0x7f) << 8);
312 } else {
313 comedi_error(dev, "bug! unknown ai encoding");
314 return -1;
315 }
316 }
317
318 return n;
319 }
320
321 static int das08_di_rbits(struct comedi_device *dev, struct comedi_subdevice *s,
322 struct comedi_insn *insn, unsigned int *data)
323 {
324 data[0] = 0;
325 data[1] = DAS08_IP(inb(dev->iobase + DAS08_STATUS));
326
327 return insn->n;
328 }
329
330 static int das08_do_wbits(struct comedi_device *dev, struct comedi_subdevice *s,
331 struct comedi_insn *insn, unsigned int *data)
332 {
333 struct das08_private_struct *devpriv = dev->private;
334 int wbits;
335
336 /* get current settings of digital output lines */
337 wbits = (devpriv->do_mux_bits >> 4) & 0xf;
338 /* null bits we are going to set */
339 wbits &= ~data[0];
340 /* set new bit values */
341 wbits |= data[0] & data[1];
342 /* remember digital output bits */
343 /* prevent race with setting of analog input mux */
344 spin_lock(&dev->spinlock);
345 devpriv->do_mux_bits &= ~DAS08_DO_MASK;
346 devpriv->do_mux_bits |= DAS08_OP(wbits);
347 outb(devpriv->do_mux_bits, dev->iobase + DAS08_CONTROL);
348 spin_unlock(&dev->spinlock);
349
350 data[1] = wbits;
351
352 return insn->n;
353 }
354
355 static int das08jr_di_rbits(struct comedi_device *dev,
356 struct comedi_subdevice *s,
357 struct comedi_insn *insn, unsigned int *data)
358 {
359 data[0] = 0;
360 data[1] = inb(dev->iobase + DAS08JR_DIO);
361
362 return insn->n;
363 }
364
365 static int das08jr_do_wbits(struct comedi_device *dev,
366 struct comedi_subdevice *s,
367 struct comedi_insn *insn, unsigned int *data)
368 {
369 struct das08_private_struct *devpriv = dev->private;
370
371 /* null bits we are going to set */
372 devpriv->do_bits &= ~data[0];
373 /* set new bit values */
374 devpriv->do_bits |= data[0] & data[1];
375 outb(devpriv->do_bits, dev->iobase + DAS08JR_DIO);
376
377 data[1] = devpriv->do_bits;
378
379 return insn->n;
380 }
381
382 static void das08_ao_set_data(struct comedi_device *dev,
383 unsigned int chan, unsigned int data)
384 {
385 const struct das08_board_struct *thisboard = comedi_board(dev);
386 struct das08_private_struct *devpriv = dev->private;
387 unsigned char lsb;
388 unsigned char msb;
389
390 lsb = data & 0xff;
391 msb = (data >> 8) & 0xff;
392 if (thisboard->is_jr) {
393 outb(lsb, dev->iobase + DAS08JR_AO_LSB(chan));
394 outb(msb, dev->iobase + DAS08JR_AO_MSB(chan));
395 /* load DACs */
396 inb(dev->iobase + DAS08JR_DIO);
397 } else {
398 outb(lsb, dev->iobase + DAS08AO_AO_LSB(chan));
399 outb(msb, dev->iobase + DAS08AO_AO_MSB(chan));
400 /* load DACs */
401 inb(dev->iobase + DAS08AO_AO_UPDATE);
402 }
403 devpriv->ao_readback[chan] = data;
404 }
405
406 static void das08_ao_initialize(struct comedi_device *dev,
407 struct comedi_subdevice *s)
408 {
409 int n;
410 unsigned int data;
411
412 data = s->maxdata / 2; /* should be about 0 volts */
413 for (n = 0; n < s->n_chan; n++)
414 das08_ao_set_data(dev, n, data);
415 }
416
417 static int das08_ao_winsn(struct comedi_device *dev,
418 struct comedi_subdevice *s,
419 struct comedi_insn *insn, unsigned int *data)
420 {
421 unsigned int n;
422 unsigned int chan;
423
424 chan = CR_CHAN(insn->chanspec);
425
426 for (n = 0; n < insn->n; n++)
427 das08_ao_set_data(dev, chan, *data);
428
429 return n;
430 }
431
432 static int das08_ao_rinsn(struct comedi_device *dev,
433 struct comedi_subdevice *s,
434 struct comedi_insn *insn, unsigned int *data)
435 {
436 struct das08_private_struct *devpriv = dev->private;
437 unsigned int n;
438 unsigned int chan;
439
440 chan = CR_CHAN(insn->chanspec);
441
442 for (n = 0; n < insn->n; n++)
443 data[n] = devpriv->ao_readback[chan];
444
445 return n;
446 }
447
448 static void i8254_initialize(struct comedi_device *dev)
449 {
450 const struct das08_board_struct *thisboard = comedi_board(dev);
451 unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
452 unsigned int mode = I8254_MODE0 | I8254_BINARY;
453 int i;
454
455 for (i = 0; i < 3; ++i)
456 i8254_set_mode(i8254_iobase, 0, i, mode);
457 }
458
459 static int das08_counter_read(struct comedi_device *dev,
460 struct comedi_subdevice *s,
461 struct comedi_insn *insn, unsigned int *data)
462 {
463 const struct das08_board_struct *thisboard = comedi_board(dev);
464 unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
465 int chan = insn->chanspec;
466
467 data[0] = i8254_read(i8254_iobase, 0, chan);
468 return 1;
469 }
470
471 static int das08_counter_write(struct comedi_device *dev,
472 struct comedi_subdevice *s,
473 struct comedi_insn *insn, unsigned int *data)
474 {
475 const struct das08_board_struct *thisboard = comedi_board(dev);
476 unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
477 int chan = insn->chanspec;
478
479 i8254_write(i8254_iobase, 0, chan, data[0]);
480 return 1;
481 }
482
483 static int das08_counter_config(struct comedi_device *dev,
484 struct comedi_subdevice *s,
485 struct comedi_insn *insn, unsigned int *data)
486 {
487 const struct das08_board_struct *thisboard = comedi_board(dev);
488 unsigned long i8254_iobase = dev->iobase + thisboard->i8254_offset;
489 int chan = insn->chanspec;
490
491 switch (data[0]) {
492 case INSN_CONFIG_SET_COUNTER_MODE:
493 i8254_set_mode(i8254_iobase, 0, chan, data[1]);
494 break;
495 case INSN_CONFIG_8254_READ_STATUS:
496 data[1] = i8254_status(i8254_iobase, 0, chan);
497 break;
498 default:
499 return -EINVAL;
500 break;
501 }
502 return 2;
503 }
504
505 #if DO_COMEDI_DRIVER_REGISTER
506 static const struct das08_board_struct das08_boards[] = {
507 #if DO_ISA
508 {
509 .name = "isa-das08", /* cio-das08.pdf */
510 .bustype = isa,
511 .ai_nbits = 12,
512 .ai_pg = das08_pg_none,
513 .ai_encoding = das08_encode12,
514 .di_nchan = 3,
515 .do_nchan = 4,
516 .i8255_offset = 8,
517 .i8254_offset = 4,
518 .iosize = 16, /* unchecked */
519 },
520 {
521 .name = "das08-pgm", /* cio-das08pgx.pdf */
522 .bustype = isa,
523 .ai_nbits = 12,
524 .ai_pg = das08_pgm,
525 .ai_encoding = das08_encode12,
526 .di_nchan = 3,
527 .do_nchan = 4,
528 .i8255_offset = 0,
529 .i8254_offset = 0x04,
530 .iosize = 16, /* unchecked */
531 },
532 {
533 .name = "das08-pgh", /* cio-das08pgx.pdf */
534 .bustype = isa,
535 .ai_nbits = 12,
536 .ai_pg = das08_pgh,
537 .ai_encoding = das08_encode12,
538 .di_nchan = 3,
539 .do_nchan = 4,
540 .i8254_offset = 0x04,
541 .iosize = 16, /* unchecked */
542 },
543 {
544 .name = "das08-pgl", /* cio-das08pgx.pdf */
545 .bustype = isa,
546 .ai_nbits = 12,
547 .ai_pg = das08_pgl,
548 .ai_encoding = das08_encode12,
549 .di_nchan = 3,
550 .do_nchan = 4,
551 .i8254_offset = 0x04,
552 .iosize = 16, /* unchecked */
553 },
554 {
555 .name = "das08-aoh", /* cio-das08_aox.pdf */
556 .bustype = isa,
557 .ai_nbits = 12,
558 .ai_pg = das08_pgh,
559 .ai_encoding = das08_encode12,
560 .ao_nbits = 12,
561 .di_nchan = 3,
562 .do_nchan = 4,
563 .i8255_offset = 0x0c,
564 .i8254_offset = 0x04,
565 .iosize = 16, /* unchecked */
566 },
567 {
568 .name = "das08-aol", /* cio-das08_aox.pdf */
569 .bustype = isa,
570 .ai_nbits = 12,
571 .ai_pg = das08_pgl,
572 .ai_encoding = das08_encode12,
573 .ao_nbits = 12,
574 .di_nchan = 3,
575 .do_nchan = 4,
576 .i8255_offset = 0x0c,
577 .i8254_offset = 0x04,
578 .iosize = 16, /* unchecked */
579 },
580 {
581 .name = "das08-aom", /* cio-das08_aox.pdf */
582 .bustype = isa,
583 .ai_nbits = 12,
584 .ai_pg = das08_pgm,
585 .ai_encoding = das08_encode12,
586 .ao_nbits = 12,
587 .di_nchan = 3,
588 .do_nchan = 4,
589 .i8255_offset = 0x0c,
590 .i8254_offset = 0x04,
591 .iosize = 16, /* unchecked */
592 },
593 {
594 .name = "das08/jr-ao", /* cio-das08-jr-ao.pdf */
595 .bustype = isa,
596 .is_jr = true,
597 .ai_nbits = 12,
598 .ai_pg = das08_pg_none,
599 .ai_encoding = das08_encode12,
600 .ao_nbits = 12,
601 .di_nchan = 8,
602 .do_nchan = 8,
603 .iosize = 16, /* unchecked */
604 },
605 {
606 .name = "das08jr-16-ao", /* cio-das08jr-16-ao.pdf */
607 .bustype = isa,
608 .is_jr = true,
609 .ai_nbits = 16,
610 .ai_pg = das08_pg_none,
611 .ai_encoding = das08_encode16,
612 .ao_nbits = 16,
613 .di_nchan = 8,
614 .do_nchan = 8,
615 .i8254_offset = 0x04,
616 .iosize = 16, /* unchecked */
617 },
618 {
619 .name = "pc104-das08",
620 .bustype = isa,
621 .ai_nbits = 12,
622 .ai_pg = das08_pg_none,
623 .ai_encoding = das08_encode12,
624 .di_nchan = 3,
625 .do_nchan = 4,
626 .i8254_offset = 4,
627 .iosize = 16, /* unchecked */
628 },
629 {
630 .name = "das08jr/16",
631 .bustype = isa,
632 .is_jr = true,
633 .ai_nbits = 16,
634 .ai_pg = das08_pg_none,
635 .ai_encoding = das08_encode16,
636 .di_nchan = 8,
637 .do_nchan = 8,
638 .iosize = 16, /* unchecked */
639 },
640 #endif /* DO_ISA */
641 #if DO_PCI
642 {
643 .name = "pci-das08", /* pci-das08 */
644 .id = PCI_DEVICE_ID_PCIDAS08,
645 .bustype = pci,
646 .ai_nbits = 12,
647 .ai_pg = das08_bipolar5,
648 .ai_encoding = das08_encode12,
649 .di_nchan = 3,
650 .do_nchan = 4,
651 .i8254_offset = 4,
652 .iosize = 8,
653 },
654 #endif /* DO_PCI */
655 };
656 #endif /* DO_COMEDI_DRIVER_REGISTER */
657
658 int das08_common_attach(struct comedi_device *dev, unsigned long iobase)
659 {
660 const struct das08_board_struct *thisboard = comedi_board(dev);
661 struct das08_private_struct *devpriv = dev->private;
662 struct comedi_subdevice *s;
663 int ret;
664
665 dev->iobase = iobase;
666
667 dev->board_name = thisboard->name;
668
669 ret = comedi_alloc_subdevices(dev, 6);
670 if (ret)
671 return ret;
672
673 s = &dev->subdevices[0];
674 /* ai */
675 if (thisboard->ai_nbits) {
676 s->type = COMEDI_SUBD_AI;
677 /* XXX some boards actually have differential
678 * inputs instead of single ended.
679 * The driver does nothing with arefs though,
680 * so it's no big deal.
681 */
682 s->subdev_flags = SDF_READABLE | SDF_GROUND;
683 s->n_chan = 8;
684 s->maxdata = (1 << thisboard->ai_nbits) - 1;
685 s->range_table = das08_ai_lranges[thisboard->ai_pg];
686 s->insn_read = das08_ai_rinsn;
687 devpriv->pg_gainlist = das08_gainlists[thisboard->ai_pg];
688 } else {
689 s->type = COMEDI_SUBD_UNUSED;
690 }
691
692 s = &dev->subdevices[1];
693 /* ao */
694 if (thisboard->ao_nbits) {
695 s->type = COMEDI_SUBD_AO;
696 s->subdev_flags = SDF_WRITABLE;
697 s->n_chan = 2;
698 s->maxdata = (1 << thisboard->ao_nbits) - 1;
699 s->range_table = &range_bipolar5;
700 s->insn_write = das08_ao_winsn;
701 s->insn_read = das08_ao_rinsn;
702 das08_ao_initialize(dev, s);
703 } else {
704 s->type = COMEDI_SUBD_UNUSED;
705 }
706
707 s = &dev->subdevices[2];
708 /* di */
709 if (thisboard->di_nchan) {
710 s->type = COMEDI_SUBD_DI;
711 s->subdev_flags = SDF_READABLE;
712 s->n_chan = thisboard->di_nchan;
713 s->maxdata = 1;
714 s->range_table = &range_digital;
715 s->insn_bits =
716 thisboard->is_jr ? das08jr_di_rbits : das08_di_rbits;
717 } else {
718 s->type = COMEDI_SUBD_UNUSED;
719 }
720
721 s = &dev->subdevices[3];
722 /* do */
723 if (thisboard->do_nchan) {
724 s->type = COMEDI_SUBD_DO;
725 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
726 s->n_chan = thisboard->do_nchan;
727 s->maxdata = 1;
728 s->range_table = &range_digital;
729 s->insn_bits =
730 thisboard->is_jr ? das08jr_do_wbits : das08_do_wbits;
731 } else {
732 s->type = COMEDI_SUBD_UNUSED;
733 }
734
735 s = &dev->subdevices[4];
736 /* 8255 */
737 if (thisboard->i8255_offset != 0) {
738 subdev_8255_init(dev, s, NULL, (unsigned long)(dev->iobase +
739 thisboard->
740 i8255_offset));
741 } else {
742 s->type = COMEDI_SUBD_UNUSED;
743 }
744
745 s = &dev->subdevices[5];
746 /* 8254 */
747 if (thisboard->i8254_offset != 0) {
748 s->type = COMEDI_SUBD_COUNTER;
749 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
750 s->n_chan = 3;
751 s->maxdata = 0xFFFF;
752 s->insn_read = das08_counter_read;
753 s->insn_write = das08_counter_write;
754 s->insn_config = das08_counter_config;
755 i8254_initialize(dev);
756 } else {
757 s->type = COMEDI_SUBD_UNUSED;
758 }
759
760 return 0;
761 }
762 EXPORT_SYMBOL_GPL(das08_common_attach);
763
764 static const struct das08_board_struct *
765 das08_find_pci_board(struct pci_dev *pdev)
766 {
767 #if DO_COMEDI_DRIVER_REGISTER
768 unsigned int i;
769 for (i = 0; i < ARRAY_SIZE(das08_boards); i++)
770 if (is_pci_board(&das08_boards[i]) &&
771 pdev->device == das08_boards[i].id)
772 return &das08_boards[i];
773 #endif
774 return NULL;
775 }
776
777 /* only called in the PCI probe path, via comedi_pci_auto_config() */
778 static int __devinit __maybe_unused
779 das08_attach_pci(struct comedi_device *dev, struct pci_dev *pdev)
780 {
781 struct das08_private_struct *devpriv;
782 unsigned long iobase;
783
784 if (!DO_PCI)
785 return -EINVAL;
786
787 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
788 if (!devpriv)
789 return -ENOMEM;
790 dev->private = devpriv;
791
792 dev_info(dev->class_dev, "attach pci %s\n", pci_name(pdev));
793 dev->board_ptr = das08_find_pci_board(pdev);
794 if (dev->board_ptr == NULL) {
795 dev_err(dev->class_dev, "BUG! cannot determine board type!\n");
796 return -EINVAL;
797 }
798 comedi_set_hw_dev(dev, &pdev->dev);
799 /* enable PCI device and reserve I/O spaces */
800 if (comedi_pci_enable(pdev, dev->driver->driver_name)) {
801 dev_err(dev->class_dev,
802 "Error enabling PCI device and requesting regions\n");
803 return -EIO;
804 }
805 /* read base addresses */
806 iobase = pci_resource_start(pdev, 2);
807 return das08_common_attach(dev, iobase);
808 }
809
810 static int __maybe_unused
811 das08_attach(struct comedi_device *dev, struct comedi_devconfig *it)
812 {
813 const struct das08_board_struct *thisboard = comedi_board(dev);
814 struct das08_private_struct *devpriv;
815 unsigned long iobase;
816
817 devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL);
818 if (!devpriv)
819 return -ENOMEM;
820 dev->private = devpriv;
821
822 dev_info(dev->class_dev, "attach\n");
823 if (is_pci_board(thisboard)) {
824 dev_err(dev->class_dev,
825 "Manual configuration of PCI board '%s' is not supported\n",
826 thisboard->name);
827 return -EIO;
828 } else if (is_isa_board(thisboard)) {
829 iobase = it->options[0];
830 dev_info(dev->class_dev, "iobase 0x%lx\n", iobase);
831 if (!request_region(iobase, thisboard->iosize, DRV_NAME)) {
832 dev_err(dev->class_dev, "I/O port conflict\n");
833 return -EIO;
834 }
835 return das08_common_attach(dev, iobase);
836 } else
837 return -EIO;
838 }
839
840 void das08_common_detach(struct comedi_device *dev)
841 {
842 if (dev->subdevices)
843 subdev_8255_cleanup(dev, &dev->subdevices[4]);
844 }
845 EXPORT_SYMBOL_GPL(das08_common_detach);
846
847 static void __maybe_unused das08_detach(struct comedi_device *dev)
848 {
849 const struct das08_board_struct *thisboard = comedi_board(dev);
850
851 das08_common_detach(dev);
852 if (is_isa_board(thisboard)) {
853 if (dev->iobase)
854 release_region(dev->iobase, thisboard->iosize);
855 } else if (is_pci_board(thisboard)) {
856 struct pci_dev *pdev = comedi_to_pci_dev(dev);
857 if (pdev) {
858 if (dev->iobase)
859 comedi_pci_disable(pdev);
860 }
861 }
862 }
863
864 #if DO_COMEDI_DRIVER_REGISTER
865 static struct comedi_driver das08_driver = {
866 .driver_name = DRV_NAME,
867 .module = THIS_MODULE,
868 .attach = das08_attach,
869 .attach_pci = das08_attach_pci,
870 .detach = das08_detach,
871 .board_name = &das08_boards[0].name,
872 .num_names = sizeof(das08_boards) / sizeof(struct das08_board_struct),
873 .offset = sizeof(struct das08_board_struct),
874 };
875 #endif
876
877 #if DO_PCI
878 static DEFINE_PCI_DEVICE_TABLE(das08_pci_table) = {
879 { PCI_DEVICE(PCI_VENDOR_ID_COMPUTERBOARDS, PCI_DEVICE_ID_PCIDAS08) },
880 {0}
881 };
882
883 MODULE_DEVICE_TABLE(pci, das08_pci_table);
884
885 static int __devinit das08_pci_probe(struct pci_dev *dev,
886 const struct pci_device_id *ent)
887 {
888 return comedi_pci_auto_config(dev, &das08_driver);
889 }
890
891 static void __devexit das08_pci_remove(struct pci_dev *dev)
892 {
893 comedi_pci_auto_unconfig(dev);
894 }
895
896 static struct pci_driver das08_pci_driver = {
897 .id_table = das08_pci_table,
898 .name = DRV_NAME,
899 .probe = &das08_pci_probe,
900 .remove = __devexit_p(&das08_pci_remove)
901 };
902 #endif /* DO_PCI */
903
904 #if DO_COMEDI_DRIVER_REGISTER
905 #if DO_PCI
906 module_comedi_pci_driver(das08_driver, das08_pci_driver);
907 #else
908 module_comedi_driver(das08_driver);
909 #endif
910 #else /* DO_COMEDI_DRIVER_REGISTER */
911 static int __init das08_init(void)
912 {
913 return 0;
914 }
915
916 static void __exit das08_exit(void)
917 {
918 }
919
920 module_init(das08_init);
921 module_exit(das08_exit);
922 #endif /* DO_COMEDI_DRIVER_REGISTER */
923
924 MODULE_AUTHOR("Comedi http://www.comedi.org");
925 MODULE_DESCRIPTION("Comedi low-level driver");
926 MODULE_LICENSE("GPL");
Linux kernel - Deliverables
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