Commit | Line | Data |
---|---|---|
578c0183 AB |
1 | /* |
2 | comedi/drivers/serial2002.c | |
3 | Skeleton code for a Comedi driver | |
4 | ||
5 | COMEDI - Linux Control and Measurement Device Interface | |
6 | Copyright (C) 2002 Anders Blomdell <anders.blomdell@control.lth.se> | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with this program; if not, write to the Free Software | |
20 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | ||
22 | */ | |
23 | ||
24 | /* | |
25 | Driver: serial2002 | |
26 | Description: Driver for serial connected hardware | |
27 | Devices: | |
28 | Author: Anders Blomdell | |
29 | Updated: Fri, 7 Jun 2002 12:56:45 -0700 | |
30 | Status: in development | |
31 | ||
32 | */ | |
33 | ||
34 | #include "../comedidev.h" | |
35 | ||
36 | #include <linux/delay.h> | |
37 | #include <linux/ioport.h> | |
38 | ||
39 | #include <asm/termios.h> | |
40 | #include <asm/ioctls.h> | |
41 | #include <linux/serial.h> | |
42 | #include <linux/poll.h> | |
43 | ||
44 | /* | |
45 | * Board descriptions for two imaginary boards. Describing the | |
46 | * boards in this way is optional, and completely driver-dependent. | |
47 | * Some drivers use arrays such as this, other do not. | |
48 | */ | |
49 | typedef struct serial2002_board_struct { | |
50 | const char *name; | |
51 | } serial2002_board; | |
52 | ||
53 | static const serial2002_board serial2002_boards[] = { | |
54 | { | |
55 | name: "serial2002"} | |
56 | }; | |
57 | ||
58 | /* | |
59 | * Useful for shorthand access to the particular board structure | |
60 | */ | |
61 | #define thisboard ((const serial2002_board *)dev->board_ptr) | |
62 | ||
63 | typedef struct { | |
64 | // HACK... | |
65 | int length; | |
1f6325d6 | 66 | struct comedi_krange range; |
578c0183 AB |
67 | } serial2002_range_table_t; |
68 | ||
69 | typedef struct { | |
70 | int port; // /dev/ttyS<port> | |
71 | int speed; // baudrate | |
72 | struct file *tty; | |
790c5541 | 73 | unsigned int ao_readback[32]; |
578c0183 AB |
74 | unsigned char digital_in_mapping[32]; |
75 | unsigned char digital_out_mapping[32]; | |
76 | unsigned char analog_in_mapping[32]; | |
77 | unsigned char analog_out_mapping[32]; | |
78 | unsigned char encoder_in_mapping[32]; | |
79 | serial2002_range_table_t in_range[32], out_range[32]; | |
80 | } serial2002_private; | |
81 | ||
82 | /* | |
83 | * most drivers define the following macro to make it easy to | |
84 | * access the private structure. | |
85 | */ | |
86 | #define devpriv ((serial2002_private *)dev->private) | |
87 | ||
0707bb04 | 88 | static int serial2002_attach(struct comedi_device * dev, struct comedi_devconfig * it); |
71b5f4f1 | 89 | static int serial2002_detach(struct comedi_device * dev); |
139dfbdf | 90 | struct comedi_driver driver_serial2002 = { |
578c0183 AB |
91 | driver_name:"serial2002", |
92 | module:THIS_MODULE, | |
93 | attach:serial2002_attach, | |
94 | detach:serial2002_detach, | |
95 | board_name:&serial2002_boards[0].name, | |
96 | offset:sizeof(serial2002_board), | |
97 | num_names:sizeof(serial2002_boards) / sizeof(serial2002_board), | |
98 | }; | |
99 | ||
34c43922 | 100 | static int serial2002_di_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 101 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 102 | static int serial2002_do_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 103 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 104 | static int serial2002_ai_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 105 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 106 | static int serial2002_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 107 | struct comedi_insn * insn, unsigned int * data); |
34c43922 | 108 | static int serial2002_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 109 | struct comedi_insn * insn, unsigned int * data); |
578c0183 AB |
110 | |
111 | struct serial_data { | |
112 | enum { is_invalid, is_digital, is_channel } kind; | |
113 | int index; | |
114 | unsigned long value; | |
115 | }; | |
116 | ||
117 | static long tty_ioctl(struct file *f, unsigned op, unsigned long param) | |
118 | { | |
119 | #ifdef HAVE_UNLOCKED_IOCTL | |
120 | if (f->f_op->unlocked_ioctl) { | |
121 | return f->f_op->unlocked_ioctl(f, op, param); | |
122 | } | |
123 | #endif | |
124 | if (f->f_op->ioctl) { | |
125 | return f->f_op->ioctl(f->f_dentry->d_inode, f, op, param); | |
126 | } | |
127 | return -ENOSYS; | |
128 | } | |
129 | ||
130 | static int tty_write(struct file *f, unsigned char *buf, int count) | |
131 | { | |
132 | int result; | |
133 | mm_segment_t oldfs; | |
134 | ||
135 | oldfs = get_fs(); | |
136 | set_fs(KERNEL_DS); | |
137 | f->f_pos = 0; | |
138 | result = f->f_op->write(f, buf, count, &f->f_pos); | |
139 | set_fs(oldfs); | |
140 | return result; | |
141 | } | |
142 | ||
143 | #if 0 | |
144 | /* | |
145 | * On 2.6.26.3 this occaisonally gave me page faults, worked around by | |
146 | * settings.c_cc[VMIN] = 0; settings.c_cc[VTIME] = 0 | |
147 | */ | |
148 | static int tty_available(struct file *f) | |
149 | { | |
150 | long result = 0; | |
151 | mm_segment_t oldfs; | |
152 | ||
153 | oldfs = get_fs(); | |
154 | set_fs(KERNEL_DS); | |
155 | tty_ioctl(f, FIONREAD, (unsigned long)&result); | |
156 | set_fs(oldfs); | |
157 | return result; | |
158 | } | |
159 | #endif | |
160 | ||
161 | static int tty_read(struct file *f, int timeout) | |
162 | { | |
163 | int result; | |
164 | ||
165 | result = -1; | |
166 | if (!IS_ERR(f)) { | |
167 | mm_segment_t oldfs; | |
168 | ||
169 | oldfs = get_fs(); | |
170 | set_fs(KERNEL_DS); | |
171 | if (f->f_op->poll) { | |
172 | struct poll_wqueues table; | |
173 | struct timeval start, now; | |
174 | ||
175 | do_gettimeofday(&start); | |
176 | poll_initwait(&table); | |
177 | while (1) { | |
178 | long elapsed; | |
179 | int mask; | |
180 | ||
181 | mask = f->f_op->poll(f, &table.pt); | |
182 | if (mask & (POLLRDNORM | POLLRDBAND | POLLIN | | |
183 | POLLHUP | POLLERR)) { | |
184 | break; | |
185 | } | |
186 | do_gettimeofday(&now); | |
187 | elapsed = | |
188 | (1000000 * (now.tv_sec - start.tv_sec) + | |
189 | now.tv_usec - start.tv_usec); | |
190 | if (elapsed > timeout) { | |
191 | break; | |
192 | } | |
193 | set_current_state(TASK_INTERRUPTIBLE); | |
194 | schedule_timeout(((timeout - | |
195 | elapsed) * HZ) / 10000); | |
196 | } | |
197 | poll_freewait(&table); | |
198 | { | |
199 | unsigned char ch; | |
200 | ||
201 | f->f_pos = 0; | |
202 | if (f->f_op->read(f, &ch, 1, &f->f_pos) == 1) { | |
203 | result = ch; | |
204 | } | |
205 | } | |
206 | } else { | |
207 | /* Device does not support poll, busy wait */ | |
208 | int retries = 0; | |
209 | while (1) { | |
210 | unsigned char ch; | |
211 | ||
212 | retries++; | |
213 | if (retries >= timeout) { | |
214 | break; | |
215 | } | |
216 | ||
217 | f->f_pos = 0; | |
218 | if (f->f_op->read(f, &ch, 1, &f->f_pos) == 1) { | |
219 | result = ch; | |
220 | break; | |
221 | } | |
222 | comedi_udelay(100); | |
223 | } | |
224 | } | |
225 | set_fs(oldfs); | |
226 | } | |
227 | return result; | |
228 | } | |
229 | ||
230 | static void tty_setspeed(struct file *f, int speed) | |
231 | { | |
232 | mm_segment_t oldfs; | |
233 | ||
234 | oldfs = get_fs(); | |
235 | set_fs(KERNEL_DS); | |
236 | { | |
237 | // Set speed | |
238 | struct termios settings; | |
239 | ||
240 | tty_ioctl(f, TCGETS, (unsigned long)&settings); | |
241 | // printk("Speed: %d\n", settings.c_cflag & (CBAUD | CBAUDEX)); | |
242 | settings.c_iflag = 0; | |
243 | settings.c_oflag = 0; | |
244 | settings.c_lflag = 0; | |
245 | settings.c_cflag = CLOCAL | CS8 | CREAD; | |
246 | settings.c_cc[VMIN] = 0; | |
247 | settings.c_cc[VTIME] = 0; | |
248 | switch (speed) { | |
249 | case 2400:{ | |
250 | settings.c_cflag |= B2400; | |
251 | } | |
252 | break; | |
253 | case 4800:{ | |
254 | settings.c_cflag |= B4800; | |
255 | } | |
256 | break; | |
257 | case 9600:{ | |
258 | settings.c_cflag |= B9600; | |
259 | } | |
260 | break; | |
261 | case 19200:{ | |
262 | settings.c_cflag |= B19200; | |
263 | } | |
264 | break; | |
265 | case 38400:{ | |
266 | settings.c_cflag |= B38400; | |
267 | } | |
268 | break; | |
269 | case 57600:{ | |
270 | settings.c_cflag |= B57600; | |
271 | } | |
272 | break; | |
273 | case 115200:{ | |
274 | settings.c_cflag |= B115200; | |
275 | } | |
276 | break; | |
277 | default:{ | |
278 | settings.c_cflag |= B9600; | |
279 | } | |
280 | break; | |
281 | } | |
282 | tty_ioctl(f, TCSETS, (unsigned long)&settings); | |
283 | // printk("Speed: %d\n", settings.c_cflag & (CBAUD | CBAUDEX)); | |
284 | } | |
285 | { | |
286 | // Set low latency | |
287 | struct serial_struct settings; | |
288 | ||
289 | tty_ioctl(f, TIOCGSERIAL, (unsigned long)&settings); | |
290 | settings.flags |= ASYNC_LOW_LATENCY; | |
291 | tty_ioctl(f, TIOCSSERIAL, (unsigned long)&settings); | |
292 | } | |
293 | ||
294 | set_fs(oldfs); | |
295 | } | |
296 | ||
297 | static void poll_digital(struct file *f, int channel) | |
298 | { | |
299 | char cmd; | |
300 | ||
301 | cmd = 0x40 | (channel & 0x1f); | |
302 | tty_write(f, &cmd, 1); | |
303 | } | |
304 | ||
305 | static void poll_channel(struct file *f, int channel) | |
306 | { | |
307 | char cmd; | |
308 | ||
309 | cmd = 0x60 | (channel & 0x1f); | |
310 | tty_write(f, &cmd, 1); | |
311 | } | |
312 | ||
313 | static struct serial_data serial_read(struct file *f, int timeout) | |
314 | { | |
315 | struct serial_data result; | |
316 | int length; | |
317 | ||
318 | result.kind = is_invalid; | |
319 | result.index = 0; | |
320 | result.value = 0; | |
321 | length = 0; | |
322 | while (1) { | |
323 | int data = tty_read(f, timeout); | |
324 | ||
325 | length++; | |
326 | if (data < 0) { | |
327 | printk("serial2002 error\n"); | |
328 | break; | |
329 | } else if (data & 0x80) { | |
330 | result.value = (result.value << 7) | (data & 0x7f); | |
331 | } else { | |
332 | if (length == 1) { | |
333 | switch ((data >> 5) & 0x03) { | |
334 | case 0:{ | |
335 | result.value = 0; | |
336 | result.kind = is_digital; | |
337 | } | |
338 | break; | |
339 | case 1:{ | |
340 | result.value = 1; | |
341 | result.kind = is_digital; | |
342 | } | |
343 | break; | |
344 | } | |
345 | } else { | |
346 | result.value = | |
347 | (result. | |
348 | value << 2) | ((data & 0x60) >> 5); | |
349 | result.kind = is_channel; | |
350 | } | |
351 | result.index = data & 0x1f; | |
352 | break; | |
353 | } | |
354 | } | |
355 | return result; | |
356 | ||
357 | } | |
358 | ||
359 | static void serial_write(struct file *f, struct serial_data data) | |
360 | { | |
361 | if (data.kind == is_digital) { | |
362 | unsigned char ch = | |
363 | ((data.value << 5) & 0x20) | (data.index & 0x1f); | |
364 | tty_write(f, &ch, 1); | |
365 | } else { | |
366 | unsigned char ch[6]; | |
367 | int i = 0; | |
368 | if (data.value >= (1L << 30)) { | |
369 | ch[i] = 0x80 | ((data.value >> 30) & 0x03); | |
370 | i++; | |
371 | } | |
372 | if (data.value >= (1L << 23)) { | |
373 | ch[i] = 0x80 | ((data.value >> 23) & 0x7f); | |
374 | i++; | |
375 | } | |
376 | if (data.value >= (1L << 16)) { | |
377 | ch[i] = 0x80 | ((data.value >> 16) & 0x7f); | |
378 | i++; | |
379 | } | |
380 | if (data.value >= (1L << 9)) { | |
381 | ch[i] = 0x80 | ((data.value >> 9) & 0x7f); | |
382 | i++; | |
383 | } | |
384 | ch[i] = 0x80 | ((data.value >> 2) & 0x7f); | |
385 | i++; | |
386 | ch[i] = ((data.value << 5) & 0x60) | (data.index & 0x1f); | |
387 | i++; | |
388 | tty_write(f, ch, i); | |
389 | } | |
390 | } | |
391 | ||
71b5f4f1 | 392 | static void serial_2002_open(struct comedi_device * dev) |
578c0183 AB |
393 | { |
394 | char port[20]; | |
395 | ||
396 | sprintf(port, "/dev/ttyS%d", devpriv->port); | |
397 | devpriv->tty = filp_open(port, 0, O_RDWR); | |
398 | if (IS_ERR(devpriv->tty)) { | |
399 | printk("serial_2002: file open error = %ld\n", | |
400 | PTR_ERR(devpriv->tty)); | |
401 | } else { | |
402 | typedef struct { | |
403 | int kind; | |
404 | int bits; | |
405 | int min; | |
406 | int max; | |
407 | } config_t; | |
408 | config_t dig_in_config[32]; | |
409 | config_t dig_out_config[32]; | |
410 | config_t chan_in_config[32]; | |
411 | config_t chan_out_config[32]; | |
412 | int i; | |
413 | ||
414 | for (i = 0; i < 32; i++) { | |
415 | dig_in_config[i].kind = 0; | |
416 | dig_in_config[i].bits = 0; | |
417 | dig_in_config[i].min = 0; | |
418 | dig_in_config[i].max = 0; | |
419 | dig_out_config[i].kind = 0; | |
420 | dig_out_config[i].bits = 0; | |
421 | dig_out_config[i].min = 0; | |
422 | dig_out_config[i].max = 0; | |
423 | chan_in_config[i].kind = 0; | |
424 | chan_in_config[i].bits = 0; | |
425 | chan_in_config[i].min = 0; | |
426 | chan_in_config[i].max = 0; | |
427 | chan_out_config[i].kind = 0; | |
428 | chan_out_config[i].bits = 0; | |
429 | chan_out_config[i].min = 0; | |
430 | chan_out_config[i].max = 0; | |
431 | } | |
432 | ||
433 | tty_setspeed(devpriv->tty, devpriv->speed); | |
434 | poll_channel(devpriv->tty, 31); // Start reading configuration | |
435 | while (1) { | |
436 | struct serial_data data; | |
437 | ||
438 | data = serial_read(devpriv->tty, 1000); | |
439 | if (data.kind != is_channel || data.index != 31 | |
440 | || !(data.value & 0xe0)) { | |
441 | break; | |
442 | } else { | |
443 | int command, channel, kind; | |
444 | config_t *cur_config = 0; | |
445 | ||
446 | channel = data.value & 0x1f; | |
447 | kind = (data.value >> 5) & 0x7; | |
448 | command = (data.value >> 8) & 0x3; | |
449 | switch (kind) { | |
450 | case 1:{ | |
451 | cur_config = dig_in_config; | |
452 | } | |
453 | break; | |
454 | case 2:{ | |
455 | cur_config = dig_out_config; | |
456 | } | |
457 | break; | |
458 | case 3:{ | |
459 | cur_config = chan_in_config; | |
460 | } | |
461 | break; | |
462 | case 4:{ | |
463 | cur_config = chan_out_config; | |
464 | } | |
465 | break; | |
466 | case 5:{ | |
467 | cur_config = chan_in_config; | |
468 | } | |
469 | break; | |
470 | } | |
471 | ||
472 | if (cur_config) { | |
473 | cur_config[channel].kind = kind; | |
474 | switch (command) { | |
475 | case 0:{ | |
476 | cur_config[channel]. | |
477 | bits = | |
478 | (data. | |
479 | value >> 10) & | |
480 | 0x3f; | |
481 | } | |
482 | break; | |
483 | case 1:{ | |
484 | int unit, sign, min; | |
485 | unit = (data. | |
486 | value >> 10) & | |
487 | 0x7; | |
488 | sign = (data. | |
489 | value >> 13) & | |
490 | 0x1; | |
491 | min = (data. | |
492 | value >> 14) & | |
493 | 0xfffff; | |
494 | ||
495 | switch (unit) { | |
496 | case 0:{ | |
497 | min = min * 1000000; | |
498 | } | |
499 | break; | |
500 | case 1:{ | |
501 | min = min * 1000; | |
502 | } | |
503 | break; | |
504 | case 2:{ | |
505 | min = min * 1; | |
506 | } | |
507 | break; | |
508 | } | |
509 | if (sign) { | |
510 | min = -min; | |
511 | } | |
512 | cur_config[channel]. | |
513 | min = min; | |
514 | } | |
515 | break; | |
516 | case 2:{ | |
517 | int unit, sign, max; | |
518 | unit = (data. | |
519 | value >> 10) & | |
520 | 0x7; | |
521 | sign = (data. | |
522 | value >> 13) & | |
523 | 0x1; | |
524 | max = (data. | |
525 | value >> 14) & | |
526 | 0xfffff; | |
527 | ||
528 | switch (unit) { | |
529 | case 0:{ | |
530 | max = max * 1000000; | |
531 | } | |
532 | break; | |
533 | case 1:{ | |
534 | max = max * 1000; | |
535 | } | |
536 | break; | |
537 | case 2:{ | |
538 | max = max * 1; | |
539 | } | |
540 | break; | |
541 | } | |
542 | if (sign) { | |
543 | max = -max; | |
544 | } | |
545 | cur_config[channel]. | |
546 | max = max; | |
547 | } | |
548 | break; | |
549 | } | |
550 | } | |
551 | } | |
552 | } | |
553 | for (i = 0; i <= 4; i++) { | |
554 | // Fill in subdev data | |
555 | config_t *c; | |
556 | unsigned char *mapping = 0; | |
557 | serial2002_range_table_t *range = 0; | |
558 | int kind = 0; | |
559 | ||
560 | switch (i) { | |
561 | case 0:{ | |
562 | c = dig_in_config; | |
563 | mapping = devpriv->digital_in_mapping; | |
564 | kind = 1; | |
565 | } | |
566 | break; | |
567 | case 1:{ | |
568 | c = dig_out_config; | |
569 | mapping = devpriv->digital_out_mapping; | |
570 | kind = 2; | |
571 | } | |
572 | break; | |
573 | case 2:{ | |
574 | c = chan_in_config; | |
575 | mapping = devpriv->analog_in_mapping; | |
576 | range = devpriv->in_range; | |
577 | kind = 3; | |
578 | } | |
579 | break; | |
580 | case 3:{ | |
581 | c = chan_out_config; | |
582 | mapping = devpriv->analog_out_mapping; | |
583 | range = devpriv->out_range; | |
584 | kind = 4; | |
585 | } | |
586 | break; | |
587 | case 4:{ | |
588 | c = chan_in_config; | |
589 | mapping = devpriv->encoder_in_mapping; | |
590 | range = devpriv->in_range; | |
591 | kind = 5; | |
592 | } | |
593 | break; | |
594 | default:{ | |
595 | c = 0; | |
596 | } | |
597 | break; | |
598 | } | |
599 | if (c) { | |
34c43922 | 600 | struct comedi_subdevice *s; |
9ced1de6 | 601 | const struct comedi_lrange **range_table_list = NULL; |
578c0183 AB |
602 | unsigned int *maxdata_list; |
603 | int j, chan; | |
604 | ||
605 | for (chan = 0, j = 0; j < 32; j++) { | |
606 | if (c[j].kind == kind) { | |
607 | chan++; | |
608 | } | |
609 | } | |
610 | s = &dev->subdevices[i]; | |
611 | s->n_chan = chan; | |
612 | s->maxdata = 0; | |
613 | if (s->maxdata_list) { | |
614 | kfree(s->maxdata_list); | |
615 | } | |
616 | s->maxdata_list = maxdata_list = | |
790c5541 | 617 | kmalloc(sizeof(unsigned int) * s->n_chan, |
578c0183 AB |
618 | GFP_KERNEL); |
619 | if (s->range_table_list) { | |
620 | kfree(s->range_table_list); | |
621 | } | |
622 | if (range) { | |
623 | s->range_table = 0; | |
624 | s->range_table_list = range_table_list = | |
625 | kmalloc(sizeof | |
626 | (serial2002_range_table_t) * | |
627 | s->n_chan, GFP_KERNEL); | |
628 | } | |
629 | for (chan = 0, j = 0; j < 32; j++) { | |
630 | if (c[j].kind == kind) { | |
631 | if (mapping) { | |
632 | mapping[chan] = j; | |
633 | } | |
634 | if (range) { | |
635 | range[j].length = 1; | |
636 | range[j].range.min = | |
637 | c[j].min; | |
638 | range[j].range.max = | |
639 | c[j].max; | |
640 | range_table_list[chan] = | |
9ced1de6 | 641 | (const struct |
578c0183 AB |
642 | comedi_lrange *) |
643 | &range[j]; | |
644 | } | |
645 | maxdata_list[chan] = | |
646 | ((long long)1 << c[j]. | |
647 | bits) - 1; | |
648 | chan++; | |
649 | } | |
650 | } | |
651 | } | |
652 | } | |
653 | } | |
654 | } | |
655 | ||
71b5f4f1 | 656 | static void serial_2002_close(struct comedi_device * dev) |
578c0183 AB |
657 | { |
658 | if (!IS_ERR(devpriv->tty) && (devpriv->tty != 0)) { | |
659 | filp_close(devpriv->tty, 0); | |
660 | } | |
661 | } | |
662 | ||
34c43922 | 663 | static int serial2002_di_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 664 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
665 | { |
666 | int n; | |
667 | int chan; | |
668 | ||
669 | chan = devpriv->digital_in_mapping[CR_CHAN(insn->chanspec)]; | |
670 | for (n = 0; n < insn->n; n++) { | |
671 | struct serial_data read; | |
672 | ||
673 | poll_digital(devpriv->tty, chan); | |
674 | while (1) { | |
675 | read = serial_read(devpriv->tty, 1000); | |
676 | if (read.kind != is_digital || read.index == chan) { | |
677 | break; | |
678 | } | |
679 | } | |
680 | data[n] = read.value; | |
681 | } | |
682 | return n; | |
683 | } | |
684 | ||
34c43922 | 685 | static int serial2002_do_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 686 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
687 | { |
688 | int n; | |
689 | int chan; | |
690 | ||
691 | chan = devpriv->digital_out_mapping[CR_CHAN(insn->chanspec)]; | |
692 | for (n = 0; n < insn->n; n++) { | |
693 | struct serial_data write; | |
694 | ||
695 | write.kind = is_digital; | |
696 | write.index = chan; | |
697 | write.value = data[n]; | |
698 | serial_write(devpriv->tty, write); | |
699 | } | |
700 | return n; | |
701 | } | |
702 | ||
34c43922 | 703 | static int serial2002_ai_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 704 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
705 | { |
706 | int n; | |
707 | int chan; | |
708 | ||
709 | chan = devpriv->analog_in_mapping[CR_CHAN(insn->chanspec)]; | |
710 | for (n = 0; n < insn->n; n++) { | |
711 | struct serial_data read; | |
712 | ||
713 | poll_channel(devpriv->tty, chan); | |
714 | while (1) { | |
715 | read = serial_read(devpriv->tty, 1000); | |
716 | if (read.kind != is_channel || read.index == chan) { | |
717 | break; | |
718 | } | |
719 | } | |
720 | data[n] = read.value; | |
721 | } | |
722 | return n; | |
723 | } | |
724 | ||
34c43922 | 725 | static int serial2002_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 726 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
727 | { |
728 | int n; | |
729 | int chan; | |
730 | ||
731 | chan = devpriv->analog_out_mapping[CR_CHAN(insn->chanspec)]; | |
732 | for (n = 0; n < insn->n; n++) { | |
733 | struct serial_data write; | |
734 | ||
735 | write.kind = is_channel; | |
736 | write.index = chan; | |
737 | write.value = data[n]; | |
738 | serial_write(devpriv->tty, write); | |
739 | devpriv->ao_readback[chan] = data[n]; | |
740 | } | |
741 | return n; | |
742 | } | |
743 | ||
34c43922 | 744 | static int serial2002_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 745 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
746 | { |
747 | int n; | |
748 | int chan = CR_CHAN(insn->chanspec); | |
749 | ||
750 | for (n = 0; n < insn->n; n++) { | |
751 | data[n] = devpriv->ao_readback[chan]; | |
752 | } | |
753 | ||
754 | return n; | |
755 | } | |
756 | ||
34c43922 | 757 | static int serial2002_ei_rinsn(struct comedi_device * dev, struct comedi_subdevice * s, |
90035c08 | 758 | struct comedi_insn * insn, unsigned int * data) |
578c0183 AB |
759 | { |
760 | int n; | |
761 | int chan; | |
762 | ||
763 | chan = devpriv->encoder_in_mapping[CR_CHAN(insn->chanspec)]; | |
764 | for (n = 0; n < insn->n; n++) { | |
765 | struct serial_data read; | |
766 | ||
767 | poll_channel(devpriv->tty, chan); | |
768 | while (1) { | |
769 | read = serial_read(devpriv->tty, 1000); | |
770 | if (read.kind != is_channel || read.index == chan) { | |
771 | break; | |
772 | } | |
773 | } | |
774 | data[n] = read.value; | |
775 | } | |
776 | return n; | |
777 | } | |
778 | ||
0707bb04 | 779 | static int serial2002_attach(struct comedi_device * dev, struct comedi_devconfig * it) |
578c0183 | 780 | { |
34c43922 | 781 | struct comedi_subdevice *s; |
578c0183 AB |
782 | |
783 | printk("comedi%d: serial2002: ", dev->minor); | |
784 | dev->board_name = thisboard->name; | |
785 | if (alloc_private(dev, sizeof(serial2002_private)) < 0) { | |
786 | return -ENOMEM; | |
787 | } | |
788 | dev->open = serial_2002_open; | |
789 | dev->close = serial_2002_close; | |
790 | devpriv->port = it->options[0]; | |
791 | devpriv->speed = it->options[1]; | |
792 | printk("/dev/ttyS%d @ %d\n", devpriv->port, devpriv->speed); | |
793 | ||
794 | if (alloc_subdevices(dev, 5) < 0) | |
795 | return -ENOMEM; | |
796 | ||
797 | /* digital input subdevice */ | |
798 | s = dev->subdevices + 0; | |
799 | s->type = COMEDI_SUBD_DI; | |
800 | s->subdev_flags = SDF_READABLE; | |
801 | s->n_chan = 0; | |
802 | s->maxdata = 1; | |
803 | s->range_table = &range_digital; | |
804 | s->insn_read = &serial2002_di_rinsn; | |
805 | ||
806 | /* digital output subdevice */ | |
807 | s = dev->subdevices + 1; | |
808 | s->type = COMEDI_SUBD_DO; | |
809 | s->subdev_flags = SDF_WRITEABLE; | |
810 | s->n_chan = 0; | |
811 | s->maxdata = 1; | |
812 | s->range_table = &range_digital; | |
813 | s->insn_write = &serial2002_do_winsn; | |
814 | ||
815 | /* analog input subdevice */ | |
816 | s = dev->subdevices + 2; | |
817 | s->type = COMEDI_SUBD_AI; | |
818 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
819 | s->n_chan = 0; | |
820 | s->maxdata = 1; | |
821 | s->range_table = 0; | |
822 | s->insn_read = &serial2002_ai_rinsn; | |
823 | ||
824 | /* analog output subdevice */ | |
825 | s = dev->subdevices + 3; | |
826 | s->type = COMEDI_SUBD_AO; | |
827 | s->subdev_flags = SDF_WRITEABLE; | |
828 | s->n_chan = 0; | |
829 | s->maxdata = 1; | |
830 | s->range_table = 0; | |
831 | s->insn_write = &serial2002_ao_winsn; | |
832 | s->insn_read = &serial2002_ao_rinsn; | |
833 | ||
834 | /* encoder input subdevice */ | |
835 | s = dev->subdevices + 4; | |
836 | s->type = COMEDI_SUBD_COUNTER; | |
837 | s->subdev_flags = SDF_READABLE | SDF_LSAMPL; | |
838 | s->n_chan = 0; | |
839 | s->maxdata = 1; | |
840 | s->range_table = 0; | |
841 | s->insn_read = &serial2002_ei_rinsn; | |
842 | ||
843 | return 1; | |
844 | } | |
845 | ||
71b5f4f1 | 846 | static int serial2002_detach(struct comedi_device * dev) |
578c0183 | 847 | { |
34c43922 | 848 | struct comedi_subdevice *s; |
578c0183 AB |
849 | int i; |
850 | ||
851 | printk("comedi%d: serial2002: remove\n", dev->minor); | |
852 | for (i = 0; i < 4; i++) { | |
853 | s = &dev->subdevices[i]; | |
854 | if (s->maxdata_list) { | |
855 | kfree(s->maxdata_list); | |
856 | } | |
857 | if (s->range_table_list) { | |
858 | kfree(s->range_table_list); | |
859 | } | |
860 | } | |
861 | return 0; | |
862 | } | |
863 | ||
864 | COMEDI_INITCLEANUP(driver_serial2002); |