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110526ed KD |
1 | /*************************************************************************** |
2 | * * | |
3 | * comedi/drivers/unioxx5.c * | |
4 | * Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. * | |
5 | * * | |
6 | * Copyright (C) 2006 Kruchinin Daniil (asgard) [asgard@etersoft.ru] * | |
7 | * * | |
8 | * COMEDI - Linux Control and Measurement Device Interface * | |
9 | * Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org> * | |
10 | * * | |
11 | * This program is free software; you can redistribute it and/or modify * | |
12 | * it under the terms of the GNU General Public License as published by * | |
13 | * the Free Software Foundation; either version 2 of the License, or * | |
14 | * (at your option) any later version. * | |
15 | * * | |
16 | * This program is distributed in the hope that it will be useful, * | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of * | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * | |
19 | * GNU General Public License for more details. * | |
20 | * * | |
21 | * You should have received a copy of the GNU General Public License * | |
22 | * along with this program; if not, write to the Free Software * | |
23 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * | |
24 | * * | |
25 | ***************************************************************************/ | |
26 | /* | |
27 | ||
28 | Driver: unioxx5 | |
29 | Description: Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. | |
30 | Author: Kruchinin Daniil (asgard) <asgard@etersoft.ru> | |
31 | Status: unknown | |
32 | Updated: 2006-10-09 | |
33 | Devices: [Fastwel] UNIOxx-5 (unioxx5), | |
34 | ||
35 | This card supports digital and analog I/O. It written for g01 | |
36 | subdevices only. | |
37 | channels range: 0 .. 23 dio channels | |
38 | and 0 .. 11 analog modules range | |
39 | During attaching unioxx5 module displays modules identifiers | |
40 | (see dmesg after comedi_config) in format: | |
41 | | [module_number] module_id | | |
42 | ||
43 | */ | |
44 | ||
45 | #include "../comedidev.h" | |
46 | #include <linux/ioport.h> | |
5a0e3ad6 | 47 | #include <linux/slab.h> |
110526ed KD |
48 | |
49 | #define DRIVER_NAME "unioxx5" | |
50 | #define UNIOXX5_SIZE 0x10 | |
51 | #define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */ | |
52 | #define UNIOXX5_SUBDEV_ODDS 0x400 | |
53 | ||
54 | /* modules types */ | |
55 | #define MODULE_DIGITAL 0 | |
56 | #define MODULE_OUTPUT_MASK 0x80 /* analog input/output */ | |
57 | ||
58 | /* constants for digital i/o */ | |
59 | #define UNIOXX5_NUM_OF_CHANS 24 | |
60 | ||
61 | /* constants for analog i/o */ | |
62 | #define TxBE 0x10 /* transmit buffer enable */ | |
63 | #define RxCA 0x20 /* 1 receive character available */ | |
64 | #define Rx2CA 0x40 /* 2 receive character available */ | |
65 | #define Rx4CA 0x80 /* 4 receive character available */ | |
66 | ||
67 | /* bytes mask errors */ | |
68 | #define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */ | |
69 | #define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */ | |
70 | ||
71 | /* channel modes */ | |
72 | #define ALL_2_INPUT 0 /* config all digital channels to input */ | |
73 | #define ALL_2_OUTPUT 1 /* config all digital channels to output */ | |
74 | ||
75 | /* 'private' structure for each subdevice */ | |
33a4640f | 76 | struct unioxx5_subd_priv { |
110526ed | 77 | int usp_iobase; |
33e73e00 R |
78 | /* 12 modules. each can be 70L or 73L */ |
79 | unsigned char usp_module_type[12]; | |
80 | /* for saving previous written value for analog modules */ | |
81 | unsigned char usp_extra_data[12][4]; | |
110526ed KD |
82 | unsigned char usp_prev_wr_val[3]; /* previous written value */ |
83 | unsigned char usp_prev_cn_val[3]; /* previous channel value */ | |
33a4640f | 84 | }; |
110526ed | 85 | |
d22418b0 HS |
86 | static int __unioxx5_define_chan_offset(int chan_num) |
87 | { | |
88 | ||
89 | if (chan_num < 0 || chan_num > 23) | |
90 | return -1; | |
91 | ||
92 | return (chan_num >> 3) + 1; | |
93 | } | |
94 | ||
95 | #if 0 /* not used? */ | |
96 | static void __unioxx5_digital_config(struct unioxx5_subd_priv *usp, int mode) | |
97 | { | |
98 | int i, mask; | |
99 | ||
100 | mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00; | |
101 | printk("COMEDI: mode = %d\n", mask); | |
102 | ||
103 | outb(1, usp->usp_iobase + 0); | |
104 | ||
105 | for (i = 0; i < 3; i++) | |
106 | outb(mask, usp->usp_iobase + i); | |
107 | ||
108 | outb(0, usp->usp_iobase + 0); | |
109 | } | |
110 | #endif | |
111 | ||
112 | /* configure channels for analog i/o (even to output, odd to input) */ | |
113 | static void __unioxx5_analog_config(struct unioxx5_subd_priv *usp, int channel) | |
114 | { | |
115 | int chan_a, chan_b, conf, channel_offset; | |
116 | ||
117 | channel_offset = __unioxx5_define_chan_offset(channel); | |
118 | conf = usp->usp_prev_cn_val[channel_offset - 1]; | |
119 | chan_a = chan_b = 1; | |
120 | ||
121 | /* setting channel A and channel B mask */ | |
122 | if (channel % 2 == 0) { | |
123 | chan_a <<= channel & 0x07; | |
124 | chan_b <<= (channel + 1) & 0x07; | |
125 | } else { | |
126 | chan_a <<= (channel - 1) & 0x07; | |
127 | chan_b <<= channel & 0x07; | |
128 | } | |
129 | ||
130 | conf |= chan_a; /* even channel ot output */ | |
131 | conf &= ~chan_b; /* odd channel to input */ | |
132 | ||
133 | outb(1, usp->usp_iobase + 0); | |
134 | outb(conf, usp->usp_iobase + channel_offset); | |
135 | outb(0, usp->usp_iobase + 0); | |
136 | ||
137 | usp->usp_prev_cn_val[channel_offset - 1] = conf; | |
138 | } | |
139 | ||
0a85b6f0 | 140 | static int __unioxx5_digital_read(struct unioxx5_subd_priv *usp, |
d22418b0 HS |
141 | unsigned int *data, int channel, int minor) |
142 | { | |
143 | int channel_offset, mask = 1 << (channel & 0x07); | |
144 | ||
145 | channel_offset = __unioxx5_define_chan_offset(channel); | |
146 | if (channel_offset < 0) { | |
147 | printk(KERN_ERR | |
148 | "comedi%d: undefined channel %d. channel range is 0 .. 23\n", | |
149 | minor, channel); | |
150 | return 0; | |
151 | } | |
152 | ||
153 | *data = inb(usp->usp_iobase + channel_offset); | |
154 | *data &= mask; | |
155 | ||
156 | /* correct the read value to 0 or 1 */ | |
157 | if (channel_offset > 1) | |
158 | channel -= 2 << channel_offset; | |
159 | *data >>= channel; | |
160 | return 1; | |
161 | } | |
162 | ||
0a85b6f0 | 163 | static int __unioxx5_analog_read(struct unioxx5_subd_priv *usp, |
d22418b0 HS |
164 | unsigned int *data, int channel, int minor) |
165 | { | |
166 | int module_no, read_ch; | |
167 | char control; | |
168 | ||
169 | module_no = channel / 2; | |
170 | read_ch = channel % 2; /* depend on type of channel (A or B) */ | |
171 | ||
172 | /* defining if given module can work on input */ | |
173 | if (usp->usp_module_type[module_no] & MODULE_OUTPUT_MASK) { | |
174 | printk(KERN_ERR | |
175 | "comedi%d: module in position %d with id 0x%02x is for output only", | |
176 | minor, module_no, usp->usp_module_type[module_no]); | |
177 | return 0; | |
178 | } | |
179 | ||
180 | __unioxx5_analog_config(usp, channel); | |
181 | /* sends module number to card(1 .. 12) */ | |
182 | outb(module_no + 1, usp->usp_iobase + 5); | |
183 | outb('V', usp->usp_iobase + 6); /* sends to module (V)erify command */ | |
184 | control = inb(usp->usp_iobase); /* get control register byte */ | |
185 | ||
186 | /* waits while reading four bytes will be allowed */ | |
187 | while (!((control = inb(usp->usp_iobase + 0)) & Rx4CA)) | |
188 | ; | |
189 | ||
190 | /* if four bytes readding error occurs - return 0(false) */ | |
191 | if ((control & Rx4CA_ERR_MASK)) { | |
192 | printk("COMEDI: 4 bytes error\n"); | |
193 | return 0; | |
194 | } | |
195 | ||
196 | if (read_ch) | |
197 | *data = inw(usp->usp_iobase + 6); /* channel B */ | |
198 | else | |
199 | *data = inw(usp->usp_iobase + 4); /* channel A */ | |
200 | ||
201 | return 1; | |
202 | } | |
203 | ||
204 | static int __unioxx5_digital_write(struct unioxx5_subd_priv *usp, | |
205 | unsigned int *data, int channel, int minor) | |
206 | { | |
207 | int channel_offset, val; | |
208 | int mask = 1 << (channel & 0x07); | |
209 | ||
210 | channel_offset = __unioxx5_define_chan_offset(channel); | |
211 | if (channel_offset < 0) { | |
212 | printk(KERN_ERR | |
213 | "comedi%d: undefined channel %d. channel range is 0 .. 23\n", | |
214 | minor, channel); | |
215 | return 0; | |
216 | } | |
217 | ||
218 | /* getting previous written value */ | |
219 | val = usp->usp_prev_wr_val[channel_offset - 1]; | |
220 | ||
221 | if (*data) | |
222 | val |= mask; | |
223 | else | |
224 | val &= ~mask; | |
225 | ||
226 | outb(val, usp->usp_iobase + channel_offset); | |
227 | /* saving new written value */ | |
228 | usp->usp_prev_wr_val[channel_offset - 1] = val; | |
229 | ||
230 | return 1; | |
231 | } | |
232 | ||
233 | static int __unioxx5_analog_write(struct unioxx5_subd_priv *usp, | |
234 | unsigned int *data, int channel, int minor) | |
235 | { | |
236 | int module, i; | |
237 | ||
238 | module = channel / 2; /* definig module number(0 .. 11) */ | |
239 | i = (channel % 2) << 1; /* depends on type of channel (A or B) */ | |
240 | ||
241 | /* defining if given module can work on output */ | |
242 | if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) { | |
243 | printk(KERN_ERR | |
244 | "comedi%d: module in position %d with id 0x%0x is for input only!\n", | |
245 | minor, module, usp->usp_module_type[module]); | |
246 | return 0; | |
247 | } | |
248 | ||
249 | __unioxx5_analog_config(usp, channel); | |
250 | /* saving minor byte */ | |
251 | usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF); | |
252 | /* saving major byte */ | |
253 | usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8); | |
254 | ||
255 | /* while(!((inb(usp->usp_iobase + 0)) & TxBE)); */ | |
256 | /* sending module number to card(1 .. 12) */ | |
257 | outb(module + 1, usp->usp_iobase + 5); | |
258 | outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */ | |
259 | ||
260 | /* sending for bytes to module(one byte per cycle iteration) */ | |
261 | for (i = 0; i < 4; i++) { | |
262 | while (!((inb(usp->usp_iobase + 0)) & TxBE)) | |
263 | ; /* waits while writting will be allowed */ | |
264 | outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6); | |
265 | } | |
266 | ||
267 | return 1; | |
268 | } | |
110526ed | 269 | |
0a85b6f0 MT |
270 | static int unioxx5_subdev_read(struct comedi_device *dev, |
271 | struct comedi_subdevice *subdev, | |
272 | struct comedi_insn *insn, unsigned int *data) | |
110526ed | 273 | { |
33a4640f | 274 | struct unioxx5_subd_priv *usp = subdev->private; |
110526ed KD |
275 | int channel, type; |
276 | ||
277 | channel = CR_CHAN(insn->chanspec); | |
33e73e00 R |
278 | /* defining module type(analog or digital) */ |
279 | type = usp->usp_module_type[channel / 2]; | |
110526ed KD |
280 | |
281 | if (type == MODULE_DIGITAL) { | |
282 | if (!__unioxx5_digital_read(usp, data, channel, dev->minor)) | |
283 | return -1; | |
284 | } else { | |
285 | if (!__unioxx5_analog_read(usp, data, channel, dev->minor)) | |
286 | return -1; | |
287 | } | |
288 | ||
289 | return 1; | |
290 | } | |
291 | ||
0a85b6f0 MT |
292 | static int unioxx5_subdev_write(struct comedi_device *dev, |
293 | struct comedi_subdevice *subdev, | |
294 | struct comedi_insn *insn, unsigned int *data) | |
110526ed | 295 | { |
33a4640f | 296 | struct unioxx5_subd_priv *usp = subdev->private; |
110526ed KD |
297 | int channel, type; |
298 | ||
299 | channel = CR_CHAN(insn->chanspec); | |
33e73e00 R |
300 | /* defining module type(analog or digital) */ |
301 | type = usp->usp_module_type[channel / 2]; | |
110526ed KD |
302 | |
303 | if (type == MODULE_DIGITAL) { | |
304 | if (!__unioxx5_digital_write(usp, data, channel, dev->minor)) | |
305 | return -1; | |
306 | } else { | |
307 | if (!__unioxx5_analog_write(usp, data, channel, dev->minor)) | |
308 | return -1; | |
309 | } | |
310 | ||
311 | return 1; | |
312 | } | |
313 | ||
314 | /* for digital modules only */ | |
0a85b6f0 MT |
315 | static int unioxx5_insn_config(struct comedi_device *dev, |
316 | struct comedi_subdevice *subdev, | |
317 | struct comedi_insn *insn, unsigned int *data) | |
110526ed KD |
318 | { |
319 | int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type; | |
33a4640f | 320 | struct unioxx5_subd_priv *usp = subdev->private; |
110526ed KD |
321 | int mask = 1 << (channel & 0x07); |
322 | ||
323 | type = usp->usp_module_type[channel / 2]; | |
324 | ||
325 | if (type != MODULE_DIGITAL) { | |
326 | printk(KERN_ERR | |
0a85b6f0 MT |
327 | "comedi%d: channel configuration accessible only for digital modules\n", |
328 | dev->minor); | |
110526ed KD |
329 | return -1; |
330 | } | |
331 | ||
c3744138 BP |
332 | channel_offset = __unioxx5_define_chan_offset(channel); |
333 | if (channel_offset < 0) { | |
110526ed | 334 | printk(KERN_ERR |
0a85b6f0 MT |
335 | "comedi%d: undefined channel %d. channel range is 0 .. 23\n", |
336 | dev->minor, channel); | |
110526ed KD |
337 | return -1; |
338 | } | |
339 | ||
340 | /* gets previously written value */ | |
341 | flags = usp->usp_prev_cn_val[channel_offset - 1]; | |
342 | ||
343 | switch (*data) { | |
344 | case COMEDI_INPUT: | |
345 | flags &= ~mask; | |
346 | break; | |
347 | case COMEDI_OUTPUT: | |
348 | flags |= mask; | |
349 | break; | |
350 | default: | |
351 | printk(KERN_ERR "comedi%d: unknown flag\n", dev->minor); | |
352 | return -1; | |
353 | } | |
354 | ||
355 | /* *\ | |
356 | * sets channels buffer to 1(after this we are allowed to * | |
357 | * change channel type on input or output) * | |
358 | \* */ | |
359 | outb(1, usp->usp_iobase + 0); | |
33e73e00 R |
360 | /* changes type of _one_ channel */ |
361 | outb(flags, usp->usp_iobase + channel_offset); | |
362 | /* sets channels bank to 0(allows directly input/output) */ | |
363 | outb(0, usp->usp_iobase + 0); | |
364 | /* saves written value */ | |
365 | usp->usp_prev_cn_val[channel_offset - 1] = flags; | |
110526ed KD |
366 | |
367 | return 0; | |
368 | } | |
369 | ||
110526ed | 370 | /* initializing subdevice with given address */ |
0a85b6f0 MT |
371 | static int __unioxx5_subdev_init(struct comedi_subdevice *subdev, |
372 | int subdev_iobase, int minor) | |
110526ed | 373 | { |
33a4640f | 374 | struct unioxx5_subd_priv *usp; |
110526ed KD |
375 | int i, to, ndef_flag = 0; |
376 | ||
377 | if (!request_region(subdev_iobase, UNIOXX5_SIZE, DRIVER_NAME)) { | |
378 | printk(KERN_ERR "comedi%d: I/O port conflict\n", minor); | |
379 | return -EIO; | |
380 | } | |
381 | ||
32414878 | 382 | usp = kzalloc(sizeof(*usp), GFP_KERNEL); |
c3744138 BP |
383 | |
384 | if (usp == NULL) { | |
81a14956 | 385 | printk(KERN_ERR "comedi%d: error! --> out of memory!\n", minor); |
110526ed KD |
386 | return -1; |
387 | } | |
388 | ||
389 | usp->usp_iobase = subdev_iobase; | |
33e73e00 | 390 | printk(KERN_INFO "comedi%d: |", minor); |
110526ed KD |
391 | |
392 | /* defining modules types */ | |
393 | for (i = 0; i < 12; i++) { | |
394 | to = 10000; | |
395 | ||
396 | __unioxx5_analog_config(usp, i * 2); | |
33e73e00 R |
397 | /* sends channel number to card */ |
398 | outb(i + 1, subdev_iobase + 5); | |
110526ed | 399 | outb('H', subdev_iobase + 6); /* requests EEPROM world */ |
6fd071cc JS |
400 | while (!(inb(subdev_iobase + 0) & TxBE)) |
401 | ; /* waits while writting will be allowed */ | |
110526ed KD |
402 | outb(0, subdev_iobase + 6); |
403 | ||
404 | /* waits while reading of two bytes will be allowed */ | |
405 | while (!(inb(subdev_iobase + 0) & Rx2CA)) { | |
406 | if (--to <= 0) { | |
407 | ndef_flag = 1; | |
408 | break; | |
409 | } | |
410 | } | |
411 | ||
412 | if (ndef_flag) { | |
413 | usp->usp_module_type[i] = 0; | |
414 | ndef_flag = 0; | |
415 | } else | |
416 | usp->usp_module_type[i] = inb(subdev_iobase + 6); | |
417 | ||
418 | printk(" [%d] 0x%02x |", i, usp->usp_module_type[i]); | |
5f74ea14 | 419 | udelay(1); |
110526ed KD |
420 | } |
421 | ||
422 | printk("\n"); | |
423 | ||
424 | /* initial subdevice for digital or analog i/o */ | |
425 | subdev->type = COMEDI_SUBD_DIO; | |
426 | subdev->private = usp; | |
427 | subdev->subdev_flags = SDF_READABLE | SDF_WRITABLE; | |
428 | subdev->n_chan = UNIOXX5_NUM_OF_CHANS; | |
429 | subdev->maxdata = 0xFFF; | |
430 | subdev->range_table = &range_digital; | |
431 | subdev->insn_read = unioxx5_subdev_read; | |
432 | subdev->insn_write = unioxx5_subdev_write; | |
33e73e00 R |
433 | /* for digital modules only!!! */ |
434 | subdev->insn_config = unioxx5_insn_config; | |
110526ed | 435 | |
33e73e00 | 436 | printk(KERN_INFO "subdevice configured\n"); |
110526ed KD |
437 | |
438 | return 0; | |
439 | } | |
440 | ||
40e7f510 HS |
441 | static int unioxx5_attach(struct comedi_device *dev, |
442 | struct comedi_devconfig *it) | |
443 | { | |
444 | int iobase, i, n_subd; | |
445 | int id, num, ba; | |
446 | ||
447 | iobase = it->options[0]; | |
448 | ||
449 | dev->board_name = DRIVER_NAME; | |
450 | dev->iobase = iobase; | |
451 | iobase += UNIOXX5_SUBDEV_BASE; | |
452 | ||
453 | /* defining number of subdevices and getting they types (it must be 'g01') */ | |
454 | for (i = n_subd = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) { | |
455 | id = inb(ba + 0xE); | |
456 | num = inb(ba + 0xF); | |
457 | ||
458 | if (id != 'g' || num != 1) | |
459 | continue; | |
460 | ||
461 | n_subd++; | |
462 | } | |
463 | ||
464 | /* unioxx5 can has from two to four subdevices */ | |
465 | if (n_subd < 2) { | |
466 | printk(KERN_ERR | |
467 | "your card must has at least 2 'g01' subdevices\n"); | |
468 | return -1; | |
469 | } | |
470 | ||
471 | if (alloc_subdevices(dev, n_subd) < 0) { | |
472 | printk(KERN_ERR "out of memory\n"); | |
473 | return -ENOMEM; | |
474 | } | |
475 | ||
476 | /* initializing each of for same subdevices */ | |
477 | for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) { | |
478 | if (__unioxx5_subdev_init(&dev->subdevices[i], iobase, | |
479 | dev->minor) < 0) | |
480 | return -1; | |
481 | } | |
482 | ||
483 | printk(KERN_INFO "attached\n"); | |
484 | return 0; | |
485 | } | |
486 | ||
487 | static int unioxx5_detach(struct comedi_device *dev) | |
488 | { | |
489 | int i; | |
490 | struct comedi_subdevice *subdev; | |
491 | struct unioxx5_subd_priv *usp; | |
492 | ||
493 | for (i = 0; i < dev->n_subdevices; i++) { | |
494 | subdev = &dev->subdevices[i]; | |
495 | usp = subdev->private; | |
496 | release_region(usp->usp_iobase, UNIOXX5_SIZE); | |
497 | kfree(subdev->private); | |
498 | } | |
499 | ||
500 | return 0; | |
501 | } | |
502 | ||
503 | static struct comedi_driver unioxx5_driver = { | |
504 | .driver_name = DRIVER_NAME, | |
505 | .module = THIS_MODULE, | |
506 | .attach = unioxx5_attach, | |
507 | .detach = unioxx5_detach, | |
508 | }; | |
509 | module_comedi_driver(unioxx5_driver); | |
510 | ||
90f703d3 AT |
511 | MODULE_AUTHOR("Comedi http://www.comedi.org"); |
512 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
513 | MODULE_LICENSE("GPL"); |