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Staging: comedi: Remove lsampl_t and sampl_t typedefs
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / staging / comedi / drivers / ii_pci20kc.c
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eb3a3c1b
MK		 1/*
2 * comedi/drivers/ii_pci20kc.c
3 * Driver for Intelligent Instruments PCI-20001C carrier board
4 * and modules.
5 *
6 * Copyright (C) 2000 Markus Kempf <kempf@matsci.uni-sb.de>
7 * with suggestions from David Schleef
8 * 16.06.2000
9 *
10 * Linux device driver for COMEDI
11 * Intelligent Instrumentation
12 * PCI-20001 C-2A Carrier Board
13 * PCI-20341 M-1A 16-Bit analog input module
14 * - differential
15 * - range (-5V - +5V)
16 * - 16 bit
17 * PCI-20006 M-2 16-Bit analog output module
18 * - ranges (-10V - +10V) (0V - +10V) (-5V - +5V)
19 * - 16 bit
20 *
21 * only ONE PCI-20341 module possible
22 * only ONE PCI-20006 module possible
23 * no extern trigger implemented
24 *
25 * NOT WORKING (but soon) only 4 on-board differential channels supported
26 * NOT WORKING (but soon) only ONE di-port and ONE do-port supported instead of 4 digital ports
27 * di-port == Port 0
28 * do-port == Port 1
29 *
30 * The state of this driver is only a starting point for a complete
31 * COMEDI-driver. The final driver should support all features of the
32 * carrier board and modules.
33 *
34 * The test configuration:
35 *
36 * kernel 2.2.14 with RTAI v1.2 and patch-2.2.14rthal2
37 * COMEDI 0.7.45
38 * COMEDILIB 0.7.9
39 *
40 */
41/*
42Driver: ii_pci20kc
43Description: Intelligent Instruments PCI-20001C carrier board
44Author: Markus Kempf <kempf@matsci.uni-sb.de>
45Devices: [Intelligent Instrumentation] PCI-20001C (ii_pci20kc)
46Status: works
47
48Supports the PCI-20001 C-2a Carrier board, and could probably support
49the other carrier boards with small modifications. Modules supported
50are:
51 PCI-20006 M-2 16-bit analog output module
52 PCI-20341 M-1A 16-bit analog input module
53
54Options:
55 0 Board base address
56 1 IRQ
57 2 first option for module 1
58 3 second option for module 1
59 4 first option for module 2
60 5 second option for module 2
61 6 first option for module 3
62 7 second option for module 3
63
64options for PCI-20006M:
65 first: Analog output channel 0 range configuration
66 0 bipolar 10 (-10V -- +10V)
67 1 unipolar 10 (0V -- +10V)
68 2 bipolar 5 (-5V -- 5V)
69 second: Analog output channel 1 range configuration
70
71options for PCI-20341M:
72 first: Analog input gain configuration
73 0 1
74 1 10
75 2 100
76 3 200
77*/
78
79/* XXX needs to use ioremap() for compatibility with 2.4 kernels. Should also
80 * check_mem_region() etc. - fmhess */
81
82#include "../comedidev.h"
83
84#define PCI20000_ID 0x1d
85#define PCI20341_ID 0x77
86#define PCI20006_ID 0xe3
87#define PCI20xxx_EMPTY_ID 0xff
88
89#define PCI20000_OFFSET 0x100
90#define PCI20000_MODULES 3
91
92#define PCI20000_DIO_0 0x80
93#define PCI20000_DIO_1 0x81
94#define PCI20000_DIO_2 0xc0
95#define PCI20000_DIO_3 0xc1
96#define PCI20000_DIO_CONTROL_01 0x83 /* port 0, 1 control */
97#define PCI20000_DIO_CONTROL_23 0xc3 /* port 2, 3 control */
98#define PCI20000_DIO_BUFFER 0x82 /* buffer direction and enable */
99#define PCI20000_DIO_EOC 0xef /* even port, control output */
100#define PCI20000_DIO_OOC 0xfd /* odd port, control output */
101#define PCI20000_DIO_EIC 0x90 /* even port, control input */
102#define PCI20000_DIO_OIC 0x82 /* odd port, control input */
103#define DIO_CAND 0x12 /* and bit 1, bit 4 of control */
104#define DIO_BE 0x01 /* buffer: port enable */
105#define DIO_BO 0x04 /* buffer: output */
106#define DIO_BI 0x05 /* buffer: input */
107#define DIO_PS_0 0x00 /* buffer: port shift 0 */
108#define DIO_PS_1 0x01 /* buffer: port shift 1 */
109#define DIO_PS_2 0x04 /* buffer: port shift 2 */
110#define DIO_PS_3 0x05 /* buffer: port shift 3 */
111
112#define PCI20006_LCHAN0 0x0d
113#define PCI20006_STROBE0 0x0b
114#define PCI20006_LCHAN1 0x15
115#define PCI20006_STROBE1 0x13
116
117#define PCI20341_INIT 0x04
118#define PCI20341_REPMODE 0x00 /* single shot mode */
119#define PCI20341_PACER 0x00 /* Hardware Pacer disabled */
120#define PCI20341_CHAN_NR 0x04 /* number of input channels */
121#define PCI20341_CONFIG_REG 0x10
122#define PCI20341_MOD_STATUS 0x01
123#define PCI20341_OPT_REG 0x11
124#define PCI20341_SET_TIME_REG 0x15
125#define PCI20341_LCHAN_ADDR_REG 0x13
126#define PCI20341_CHAN_LIST 0x80
127#define PCI20341_CC_RESET 0x1b
128#define PCI20341_CHAN_RESET 0x19
129#define PCI20341_SOFT_PACER 0x04
130#define PCI20341_STATUS_REG 0x12
131#define PCI20341_LDATA 0x02
132#define PCI20341_DAISY_CHAIN 0x20 /* On-board inputs only */
133#define PCI20341_MUX 0x04 /* Enable on-board MUX */
134#define PCI20341_SCANLIST 0x80 /* Channel/Gain Scan List */
135
136typedef union {
137 void *iobase;
138 struct {
139 void *iobase;
140 const comedi_lrange *ao_range_list[2]; /* range of channels of ao module */
790c5541 141 unsigned int last_data[2];
eb3a3c1b
MK		 142 } pci20006;
143 struct {
144 void *iobase;
145 int timebase;
146 int settling_time;
147 int ai_gain;
148 } pci20341;
149} pci20xxx_subdev_private;
150
151typedef struct {
152 void *ioaddr;
153 pci20xxx_subdev_private subdev_private[PCI20000_MODULES];
154} pci20xxx_private;
155
156#define devpriv ((pci20xxx_private *)dev->private)
157#define CHAN (CR_CHAN(it->chanlist[0]))
158
159static int pci20xxx_attach(comedi_device * dev, comedi_devconfig * it);
160static int pci20xxx_detach(comedi_device * dev);
161
162static comedi_driver driver_pci20xxx = {
163 driver_name:"ii_pci20kc",
164 module:THIS_MODULE,
165 attach:pci20xxx_attach,
166 detach:pci20xxx_detach,
167};
168
169static int pci20006_init(comedi_device * dev, comedi_subdevice * s,
170 int opt0, int opt1);
171static int pci20341_init(comedi_device * dev, comedi_subdevice * s,
172 int opt0, int opt1);
173static int pci20xxx_dio_init(comedi_device * dev, comedi_subdevice * s);
174
175/*
176 options[0] Board base address
177 options[1] IRQ
178 options[2] first option for module 1
179 options[3] second option for module 1
180 options[4] first option for module 2
181 options[5] second option for module 2
182 options[6] first option for module 3
183 options[7] second option for module 3
184
185 options for PCI-20341M:
186 first Analog input gain configuration
187 0 == 1
188 1 == 10
189 2 == 100
190 3 == 200
191
192 options for PCI-20006M:
193 first Analog output channel 0 range configuration
194 0 == bipolar 10 (-10V -- +10V)
195 1 == unipolar 10V (0V -- +10V)
196 2 == bipolar 5V (-5V -- +5V)
197 second Analog output channel 1 range configuration
198 0 == bipolar 10 (-10V -- +10V)
199 1 == unipolar 10V (0V -- +10V)
200 2 == bipolar 5V (-5V -- +5V)
201*/
202static int pci20xxx_attach(comedi_device * dev, comedi_devconfig * it)
203{
204 unsigned char i;
205 int ret;
206 int id;
207 comedi_subdevice *s;
208 pci20xxx_subdev_private *sdp;
209
210 if ((ret = alloc_subdevices(dev, 1 + PCI20000_MODULES)) < 0)
211 return ret;
212 if ((ret = alloc_private(dev, sizeof(pci20xxx_private))) < 0)
213 return ret;
214
215 devpriv->ioaddr = (void *)(unsigned long)it->options[0];
216 dev->board_name = "pci20kc";
217
218 /* Check PCI-20001 C-2A Carrier Board ID */
219 if ((readb(devpriv->ioaddr) & PCI20000_ID) != PCI20000_ID) {
220 printk("comedi%d: ii_pci20kc", dev->minor);
221 printk(" PCI-20001 C-2A Carrier Board at base=0x%p not found !\n", devpriv->ioaddr);
222 return -EINVAL;
223 }
224 printk("comedi%d:\n", dev->minor);
225 printk("ii_pci20kc: PCI-20001 C-2A at base=0x%p\n", devpriv->ioaddr);
226
227 for (i = 0; i < PCI20000_MODULES; i++) {
228 s = dev->subdevices + i;
229 id = readb(devpriv->ioaddr + (i + 1) * PCI20000_OFFSET);
230 s->private = devpriv->subdev_private + i;
231 sdp = s->private;
232 switch (id) {
233 case PCI20006_ID:
234 sdp->pci20006.iobase =
235 devpriv->ioaddr + (i + 1) * PCI20000_OFFSET;
236 pci20006_init(dev, s, it->options[2 * i + 2],
237 it->options[2 * i + 3]);
238 printk("comedi%d: ii_pci20kc", dev->minor);
239 printk(" PCI-20006 module in slot %d \n", i + 1);
240 break;
241 case PCI20341_ID:
242 sdp->pci20341.iobase =
243 devpriv->ioaddr + (i + 1) * PCI20000_OFFSET;
244 pci20341_init(dev, s, it->options[2 * i + 2],
245 it->options[2 * i + 3]);
246 printk("comedi%d: ii_pci20kc", dev->minor);
247 printk(" PCI-20341 module in slot %d \n", i + 1);
248 break;
249 default:
250 printk("ii_pci20kc: unknown module code 0x%02x in slot %d: module disabled\n", id, i);
251 /* fall through */
252 case PCI20xxx_EMPTY_ID:
253 s->type = COMEDI_SUBD_UNUSED;
254 break;
255 }
256 }
257
258 /* initialize pci20xxx_private */
259 pci20xxx_dio_init(dev, dev->subdevices + PCI20000_MODULES);
260
261 return 1;
262}
263
264static int pci20xxx_detach(comedi_device * dev)
265{
266 printk("comedi%d: pci20xxx: remove\n", dev->minor);
267
268 return 0;
269}
270
271/* pci20006m */
272
273static int pci20006_insn_read(comedi_device * dev, comedi_subdevice * s,
790c5541 274 comedi_insn * insn, unsigned int * data);
eb3a3c1b 275static int pci20006_insn_write(comedi_device * dev, comedi_subdevice * s,
790c5541 276 comedi_insn * insn, unsigned int * data);
eb3a3c1b
MK		 277
278static const comedi_lrange *pci20006_range_list[] = {
279 &range_bipolar10,
280 &range_unipolar10,
281 &range_bipolar5,
282};
283
284static int pci20006_init(comedi_device * dev, comedi_subdevice * s,
285 int opt0, int opt1)
286{
287 pci20xxx_subdev_private *sdp = s->private;
288
289 if (opt0 < 0 || opt0 > 2)
290 opt0 = 0;
291 if (opt1 < 0 || opt1 > 2)
292 opt1 = 0;
293
294 sdp->pci20006.ao_range_list[0] = pci20006_range_list[opt0];
295 sdp->pci20006.ao_range_list[1] = pci20006_range_list[opt1];
296
297 /* ao subdevice */
298 s->type = COMEDI_SUBD_AO;
299 s->subdev_flags = SDF_WRITABLE;
300 s->n_chan = 2;
301 s->len_chanlist = 2;
302 s->insn_read = pci20006_insn_read;
303 s->insn_write = pci20006_insn_write;
304 s->maxdata = 0xffff;
305 s->range_table_list = sdp->pci20006.ao_range_list;
306 return 0;
307}
308
309static int pci20006_insn_read(comedi_device * dev, comedi_subdevice * s,
790c5541 310 comedi_insn * insn, unsigned int * data)
eb3a3c1b
MK		 311{
312 pci20xxx_subdev_private *sdp = s->private;
313
314 data[0] = sdp->pci20006.last_data[CR_CHAN(insn->chanspec)];
315
316 return 1;
317}
318
319static int pci20006_insn_write(comedi_device * dev, comedi_subdevice * s,
790c5541 320 comedi_insn * insn, unsigned int * data)
eb3a3c1b
MK		 321{
322 pci20xxx_subdev_private *sdp = s->private;
323 int hi, lo;
324 unsigned int boarddata;
325
326 sdp->pci20006.last_data[CR_CHAN(insn->chanspec)] = data[0];
327 boarddata = (((unsigned int)data[0] + 0x8000) & 0xffff); /* comedi-data -> board-data */
328 lo = (boarddata & 0xff);
329 hi = ((boarddata >> 8) & 0xff);
330
331 switch (CR_CHAN(insn->chanspec)) {
332 case 0:
333 writeb(lo, sdp->iobase + PCI20006_LCHAN0);
334 writeb(hi, sdp->iobase + PCI20006_LCHAN0 + 1);
335 writeb(0x00, sdp->iobase + PCI20006_STROBE0);
336 break;
337 case 1:
338 writeb(lo, sdp->iobase + PCI20006_LCHAN1);
339 writeb(hi, sdp->iobase + PCI20006_LCHAN1 + 1);
340 writeb(0x00, sdp->iobase + PCI20006_STROBE1);
341 break;
342 default:
343 printk(" comedi%d: pci20xxx: ao channel Error!\n", dev->minor);
344 return -EINVAL;
345 }
346
347 return 1;
348}
349
350/* PCI20341M */
351
352static int pci20341_insn_read(comedi_device * dev, comedi_subdevice * s,
790c5541 353 comedi_insn * insn, unsigned int * data);
eb3a3c1b
MK		 354
355static const int pci20341_timebase[] = { 0x00, 0x00, 0x00, 0x04 };
356static const int pci20341_settling_time[] = { 0x58, 0x58, 0x93, 0x99 };
357
358static const comedi_lrange range_bipolar0_5 = { 1, {BIP_RANGE(0.5)} };
359static const comedi_lrange range_bipolar0_05 = { 1, {BIP_RANGE(0.05)} };
360static const comedi_lrange range_bipolar0_025 = { 1, {BIP_RANGE(0.025)} };
361
362static const comedi_lrange *const pci20341_ranges[] = {
363 &range_bipolar5,
364 &range_bipolar0_5,
365 &range_bipolar0_05,
366 &range_bipolar0_025,
367};
368
369static int pci20341_init(comedi_device * dev, comedi_subdevice * s,
370 int opt0, int opt1)
371{
372 pci20xxx_subdev_private *sdp = s->private;
373 int option;
374
375 /* options handling */
376 if (opt0 < 0 || opt0 > 3)
377 opt0 = 0;
378 sdp->pci20341.timebase = pci20341_timebase[opt0];
379 sdp->pci20341.settling_time = pci20341_settling_time[opt0];
380
381 /* ai subdevice */
382 s->type = COMEDI_SUBD_AI;
383 s->subdev_flags = SDF_READABLE;
384 s->n_chan = PCI20341_CHAN_NR;
385 s->len_chanlist = PCI20341_SCANLIST;
386 s->insn_read = pci20341_insn_read;
387 s->maxdata = 0xffff;
388 s->range_table = pci20341_ranges[opt0];
389
390 option = sdp->pci20341.timebase | PCI20341_REPMODE; /* depends on gain, trigger, repetition mode */
391
392 writeb(PCI20341_INIT, sdp->iobase + PCI20341_CONFIG_REG); /* initialize Module */
393 writeb(PCI20341_PACER, sdp->iobase + PCI20341_MOD_STATUS); /* set Pacer */
394 writeb(option, sdp->iobase + PCI20341_OPT_REG); /* option register */
395 writeb(sdp->pci20341.settling_time, sdp->iobase + PCI20341_SET_TIME_REG); /* settling time counter */
396 /* trigger not implemented */
397 return 0;
398}
399
400static int pci20341_insn_read(comedi_device * dev, comedi_subdevice * s,
790c5541 401 comedi_insn * insn, unsigned int * data)
eb3a3c1b
MK		 402{
403 pci20xxx_subdev_private *sdp = s->private;
404 unsigned int i = 0, j = 0;
405 int lo, hi;
406 unsigned char eoc; /* end of conversion */
407 unsigned int clb; /* channel list byte */
408 unsigned int boarddata;
409
410 writeb(1, sdp->iobase + PCI20341_LCHAN_ADDR_REG); /* write number of input channels */
411 clb = PCI20341_DAISY_CHAIN | PCI20341_MUX | (sdp->pci20341.ai_gain << 3)
412 | CR_CHAN(insn->chanspec);
413 writeb(clb, sdp->iobase + PCI20341_CHAN_LIST);
414 writeb(0x00, sdp->iobase + PCI20341_CC_RESET); /* reset settling time counter and trigger delay counter */
415 writeb(0x00, sdp->iobase + PCI20341_CHAN_RESET);
416
417 /* generate Pacer */
418
419 for (i = 0; i < insn->n; i++) {
420 /* data polling isn't the niciest way to get the data, I know,
421 * but there are only 6 cycles (mean) and it is easier than
422 * the whole interrupt stuff
423 */
424 j = 0;
425 readb(sdp->iobase + PCI20341_SOFT_PACER); /* generate Pacer */
426 eoc = readb(sdp->iobase + PCI20341_STATUS_REG);
427 while ((eoc < 0x80) && j < 100) { /* poll Interrupt Flag */
428 j++;
429 eoc = readb(sdp->iobase + PCI20341_STATUS_REG);
430 }
431 if (j >= 100) {
432 printk("comedi%d: pci20xxx: AI interrupt channel %i polling exit !\n", dev->minor, i);
433 return -EINVAL;
434 }
435 lo = readb(sdp->iobase + PCI20341_LDATA);
436 hi = readb(sdp->iobase + PCI20341_LDATA + 1);
437 boarddata = lo + 0x100 * hi;
790c5541 438 data[i] = (short) ((boarddata + 0x8000) & 0xffff); /* board-data -> comedi-data */
eb3a3c1b
MK		 439 }
440
441 return i;
442}
443
444/* native DIO */
445
446static void pci20xxx_dio_config(comedi_device * dev, comedi_subdevice * s);
447static int pci20xxx_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
790c5541 448 comedi_insn * insn, unsigned int * data);
eb3a3c1b 449static int pci20xxx_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
790c5541 450 comedi_insn * insn, unsigned int * data);
eb3a3c1b
MK		 451
452/* initialize pci20xxx_private */
453static int pci20xxx_dio_init(comedi_device * dev, comedi_subdevice * s)
454{
455
456 s->type = COMEDI_SUBD_DIO;
457 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
458 s->n_chan = 32;
459 s->insn_bits = pci20xxx_dio_insn_bits;
460 s->insn_config = pci20xxx_dio_insn_config;
461 s->maxdata = 1;
462 s->len_chanlist = 32;
463 s->range_table = &range_digital;
464 s->io_bits = 0;
465
466 /* digital I/O lines default to input on board reset. */
467 pci20xxx_dio_config(dev, s);
468
469 return 0;
470}
471
472static int pci20xxx_dio_insn_config(comedi_device * dev, comedi_subdevice * s,
790c5541 473 comedi_insn * insn, unsigned int * data)
eb3a3c1b
MK		 474{
475 int mask, bits;
476
477 mask = 1 << CR_CHAN(insn->chanspec);
478 if (mask & 0x000000ff) {
479 bits = 0x000000ff;
480 } else if (mask & 0x0000ff00) {
481 bits = 0x0000ff00;
482 } else if (mask & 0x00ff0000) {
483 bits = 0x00ff0000;
484 } else {
485 bits = 0xff000000;
486 }
487 if (data[0]) {
488 s->io_bits |= bits;
489 } else {
490 s->io_bits &= ~bits;
491 }
492 pci20xxx_dio_config(dev, s);
493
494 return 1;
495}
496
497static int pci20xxx_dio_insn_bits(comedi_device * dev, comedi_subdevice * s,
790c5541 498 comedi_insn * insn, unsigned int * data)
eb3a3c1b
MK		 499{
500 unsigned int mask = data[0];
501
502 s->state &= ~mask;
503 s->state |= (mask & data[1]);
504
505 mask &= s->io_bits;
506 if (mask & 0x000000ff)
507 writeb((s->state >> 0) & 0xff,
508 devpriv->ioaddr + PCI20000_DIO_0);
509 if (mask & 0x0000ff00)
510 writeb((s->state >> 8) & 0xff,
511 devpriv->ioaddr + PCI20000_DIO_1);
512 if (mask & 0x00ff0000)
513 writeb((s->state >> 16) & 0xff,
514 devpriv->ioaddr + PCI20000_DIO_2);
515 if (mask & 0xff000000)
516 writeb((s->state >> 24) & 0xff,
517 devpriv->ioaddr + PCI20000_DIO_3);
518
519 data[1] = readb(devpriv->ioaddr + PCI20000_DIO_0);
520 data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_1) << 8;
521 data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_2) << 16;
522 data[1] |= readb(devpriv->ioaddr + PCI20000_DIO_3) << 24;
523
524 return 2;
525}
526
527static void pci20xxx_dio_config(comedi_device * dev, comedi_subdevice * s)
528{
529 unsigned char control_01;
530 unsigned char control_23;
531 unsigned char buffer;
532
533 control_01 = readb(devpriv->ioaddr + PCI20000_DIO_CONTROL_01);
534 control_23 = readb(devpriv->ioaddr + PCI20000_DIO_CONTROL_23);
535 buffer = readb(devpriv->ioaddr + PCI20000_DIO_BUFFER);
536
537 if (s->io_bits & 0x000000ff) {
538 /* output port 0 */
539 control_01 &= PCI20000_DIO_EOC;
540 buffer = (buffer & (~(DIO_BE << DIO_PS_0))) | (DIO_BO <<
541 DIO_PS_0);
542 } else {
543 /* input port 0 */
544 control_01 = (control_01 & DIO_CAND) | PCI20000_DIO_EIC;
545 buffer = (buffer & (~(DIO_BI << DIO_PS_0)));
546 }
547 if (s->io_bits & 0x0000ff00) {
548 /* output port 1 */
549 control_01 &= PCI20000_DIO_OOC;
550 buffer = (buffer & (~(DIO_BE << DIO_PS_1))) | (DIO_BO <<
551 DIO_PS_1);
552 } else {
553 /* input port 1 */
554 control_01 = (control_01 & DIO_CAND) | PCI20000_DIO_OIC;
555 buffer = (buffer & (~(DIO_BI << DIO_PS_1)));
556 }
557 if (s->io_bits & 0x00ff0000) {
558 /* output port 2 */
559 control_23 &= PCI20000_DIO_EOC;
560 buffer = (buffer & (~(DIO_BE << DIO_PS_2))) | (DIO_BO <<
561 DIO_PS_2);
562 } else {
563 /* input port 2 */
564 control_23 = (control_23 & DIO_CAND) | PCI20000_DIO_EIC;
565 buffer = (buffer & (~(DIO_BI << DIO_PS_2)));
566 }
567 if (s->io_bits & 0xff000000) {
568 /* output port 3 */
569 control_23 &= PCI20000_DIO_OOC;
570 buffer = (buffer & (~(DIO_BE << DIO_PS_3))) | (DIO_BO <<
571 DIO_PS_3);
572 } else {
573 /* input port 3 */
574 control_23 = (control_23 & DIO_CAND) | PCI20000_DIO_OIC;
575 buffer = (buffer & (~(DIO_BI << DIO_PS_3)));
576 }
577 writeb(control_01, devpriv->ioaddr + PCI20000_DIO_CONTROL_01);
578 writeb(control_23, devpriv->ioaddr + PCI20000_DIO_CONTROL_23);
579 writeb(buffer, devpriv->ioaddr + PCI20000_DIO_BUFFER);
580}
581
582#if 0
583static void pci20xxx_do(comedi_device * dev, comedi_subdevice * s)
584{
585 /* XXX if the channel is configured for input, does this
586 do bad things? */
587 /* XXX it would be a good idea to only update the registers
588 that _need_ to be updated. This requires changes to
589 comedi, however. */
590 writeb((s->state >> 0) & 0xff, devpriv->ioaddr + PCI20000_DIO_0);
591 writeb((s->state >> 8) & 0xff, devpriv->ioaddr + PCI20000_DIO_1);
592 writeb((s->state >> 16) & 0xff, devpriv->ioaddr + PCI20000_DIO_2);
593 writeb((s->state >> 24) & 0xff, devpriv->ioaddr + PCI20000_DIO_3);
594}
595
596static unsigned int pci20xxx_di(comedi_device * dev, comedi_subdevice * s)
597{
598 /* XXX same note as above */
599 unsigned int bits;
600
601 bits = readb(devpriv->ioaddr + PCI20000_DIO_0);
602 bits |= readb(devpriv->ioaddr + PCI20000_DIO_1) << 8;
603 bits |= readb(devpriv->ioaddr + PCI20000_DIO_2) << 16;
604 bits |= readb(devpriv->ioaddr + PCI20000_DIO_3) << 24;
605
606 return bits;
607}
608#endif
609
610COMEDI_INITCLEANUP(driver_pci20xxx);
kernel source for telekom puls (alcatel/mediatek)