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> | |
02921484 | 38 | #include <linux/sched.h> |
5a0e3ad6 | 39 | #include <linux/slab.h> |
578c0183 | 40 | |
b041267e | 41 | #include <linux/termios.h> |
578c0183 AB |
42 | #include <asm/ioctls.h> |
43 | #include <linux/serial.h> | |
44 | #include <linux/poll.h> | |
45 | ||
b3fb588d BP |
46 | struct serial2002_range_table_t { |
47 | ||
2696fb57 | 48 | /* HACK... */ |
578c0183 | 49 | int length; |
1f6325d6 | 50 | struct comedi_krange range; |
b3fb588d BP |
51 | }; |
52 | ||
e21ffa44 BP |
53 | struct serial2002_private { |
54 | ||
2696fb57 BP |
55 | int port; /* /dev/ttyS<port> */ |
56 | int speed; /* baudrate */ | |
578c0183 | 57 | struct file *tty; |
790c5541 | 58 | unsigned int ao_readback[32]; |
578c0183 AB |
59 | unsigned char digital_in_mapping[32]; |
60 | unsigned char digital_out_mapping[32]; | |
61 | unsigned char analog_in_mapping[32]; | |
62 | unsigned char analog_out_mapping[32]; | |
63 | unsigned char encoder_in_mapping[32]; | |
b3fb588d | 64 | struct serial2002_range_table_t in_range[32], out_range[32]; |
e21ffa44 BP |
65 | }; |
66 | ||
578c0183 AB |
67 | struct serial_data { |
68 | enum { is_invalid, is_digital, is_channel } kind; | |
69 | int index; | |
70 | unsigned long value; | |
71 | }; | |
72 | ||
73 | static long tty_ioctl(struct file *f, unsigned op, unsigned long param) | |
74 | { | |
00a1855c | 75 | if (f->f_op->unlocked_ioctl) |
578c0183 | 76 | return f->f_op->unlocked_ioctl(f, op, param); |
00a1855c | 77 | |
578c0183 AB |
78 | return -ENOSYS; |
79 | } | |
80 | ||
81 | static int tty_write(struct file *f, unsigned char *buf, int count) | |
82 | { | |
83 | int result; | |
84 | mm_segment_t oldfs; | |
85 | ||
86 | oldfs = get_fs(); | |
87 | set_fs(KERNEL_DS); | |
88 | f->f_pos = 0; | |
89 | result = f->f_op->write(f, buf, count, &f->f_pos); | |
90 | set_fs(oldfs); | |
91 | return result; | |
92 | } | |
93 | ||
94 | #if 0 | |
95 | /* | |
96 | * On 2.6.26.3 this occaisonally gave me page faults, worked around by | |
97 | * settings.c_cc[VMIN] = 0; settings.c_cc[VTIME] = 0 | |
98 | */ | |
99 | static int tty_available(struct file *f) | |
100 | { | |
101 | long result = 0; | |
102 | mm_segment_t oldfs; | |
103 | ||
104 | oldfs = get_fs(); | |
105 | set_fs(KERNEL_DS); | |
106 | tty_ioctl(f, FIONREAD, (unsigned long)&result); | |
107 | set_fs(oldfs); | |
108 | return result; | |
109 | } | |
110 | #endif | |
111 | ||
112 | static int tty_read(struct file *f, int timeout) | |
113 | { | |
114 | int result; | |
115 | ||
116 | result = -1; | |
117 | if (!IS_ERR(f)) { | |
118 | mm_segment_t oldfs; | |
119 | ||
120 | oldfs = get_fs(); | |
121 | set_fs(KERNEL_DS); | |
122 | if (f->f_op->poll) { | |
123 | struct poll_wqueues table; | |
124 | struct timeval start, now; | |
125 | ||
126 | do_gettimeofday(&start); | |
127 | poll_initwait(&table); | |
128 | while (1) { | |
129 | long elapsed; | |
130 | int mask; | |
131 | ||
132 | mask = f->f_op->poll(f, &table.pt); | |
133 | if (mask & (POLLRDNORM | POLLRDBAND | POLLIN | | |
0a85b6f0 | 134 | POLLHUP | POLLERR)) { |
578c0183 AB |
135 | break; |
136 | } | |
137 | do_gettimeofday(&now); | |
138 | elapsed = | |
0a85b6f0 MT |
139 | (1000000 * (now.tv_sec - start.tv_sec) + |
140 | now.tv_usec - start.tv_usec); | |
b041267e | 141 | if (elapsed > timeout) |
578c0183 | 142 | break; |
578c0183 AB |
143 | set_current_state(TASK_INTERRUPTIBLE); |
144 | schedule_timeout(((timeout - | |
0a85b6f0 | 145 | elapsed) * HZ) / 10000); |
578c0183 AB |
146 | } |
147 | poll_freewait(&table); | |
148 | { | |
0a85b6f0 | 149 | unsigned char ch; |
578c0183 | 150 | |
0a85b6f0 | 151 | f->f_pos = 0; |
b041267e | 152 | if (f->f_op->read(f, &ch, 1, &f->f_pos) == 1) |
0a85b6f0 | 153 | result = ch; |
578c0183 AB |
154 | } |
155 | } else { | |
156 | /* Device does not support poll, busy wait */ | |
157 | int retries = 0; | |
158 | while (1) { | |
356cdbcb | 159 | unsigned char ch; |
578c0183 AB |
160 | |
161 | retries++; | |
b041267e | 162 | if (retries >= timeout) |
578c0183 | 163 | break; |
578c0183 AB |
164 | |
165 | f->f_pos = 0; | |
166 | if (f->f_op->read(f, &ch, 1, &f->f_pos) == 1) { | |
356cdbcb | 167 | result = ch; |
578c0183 AB |
168 | break; |
169 | } | |
5f74ea14 | 170 | udelay(100); |
578c0183 AB |
171 | } |
172 | } | |
173 | set_fs(oldfs); | |
174 | } | |
175 | return result; | |
176 | } | |
177 | ||
178 | static void tty_setspeed(struct file *f, int speed) | |
179 | { | |
180 | mm_segment_t oldfs; | |
181 | ||
182 | oldfs = get_fs(); | |
183 | set_fs(KERNEL_DS); | |
184 | { | |
2696fb57 | 185 | /* Set speed */ |
578c0183 AB |
186 | struct termios settings; |
187 | ||
188 | tty_ioctl(f, TCGETS, (unsigned long)&settings); | |
2696fb57 | 189 | /* printk("Speed: %d\n", settings.c_cflag & (CBAUD | CBAUDEX)); */ |
578c0183 AB |
190 | settings.c_iflag = 0; |
191 | settings.c_oflag = 0; | |
192 | settings.c_lflag = 0; | |
193 | settings.c_cflag = CLOCAL | CS8 | CREAD; | |
194 | settings.c_cc[VMIN] = 0; | |
195 | settings.c_cc[VTIME] = 0; | |
196 | switch (speed) { | |
197 | case 2400:{ | |
198 | settings.c_cflag |= B2400; | |
199 | } | |
200 | break; | |
201 | case 4800:{ | |
202 | settings.c_cflag |= B4800; | |
203 | } | |
204 | break; | |
205 | case 9600:{ | |
206 | settings.c_cflag |= B9600; | |
207 | } | |
208 | break; | |
209 | case 19200:{ | |
210 | settings.c_cflag |= B19200; | |
211 | } | |
212 | break; | |
213 | case 38400:{ | |
214 | settings.c_cflag |= B38400; | |
215 | } | |
216 | break; | |
217 | case 57600:{ | |
218 | settings.c_cflag |= B57600; | |
219 | } | |
220 | break; | |
221 | case 115200:{ | |
222 | settings.c_cflag |= B115200; | |
223 | } | |
224 | break; | |
225 | default:{ | |
226 | settings.c_cflag |= B9600; | |
227 | } | |
228 | break; | |
229 | } | |
230 | tty_ioctl(f, TCSETS, (unsigned long)&settings); | |
2696fb57 | 231 | /* printk("Speed: %d\n", settings.c_cflag & (CBAUD | CBAUDEX)); */ |
578c0183 AB |
232 | } |
233 | { | |
2696fb57 | 234 | /* Set low latency */ |
578c0183 AB |
235 | struct serial_struct settings; |
236 | ||
237 | tty_ioctl(f, TIOCGSERIAL, (unsigned long)&settings); | |
238 | settings.flags |= ASYNC_LOW_LATENCY; | |
239 | tty_ioctl(f, TIOCSSERIAL, (unsigned long)&settings); | |
240 | } | |
241 | ||
242 | set_fs(oldfs); | |
243 | } | |
244 | ||
245 | static void poll_digital(struct file *f, int channel) | |
246 | { | |
247 | char cmd; | |
248 | ||
249 | cmd = 0x40 | (channel & 0x1f); | |
250 | tty_write(f, &cmd, 1); | |
251 | } | |
252 | ||
253 | static void poll_channel(struct file *f, int channel) | |
254 | { | |
255 | char cmd; | |
256 | ||
257 | cmd = 0x60 | (channel & 0x1f); | |
258 | tty_write(f, &cmd, 1); | |
259 | } | |
260 | ||
261 | static struct serial_data serial_read(struct file *f, int timeout) | |
262 | { | |
263 | struct serial_data result; | |
264 | int length; | |
265 | ||
266 | result.kind = is_invalid; | |
267 | result.index = 0; | |
268 | result.value = 0; | |
269 | length = 0; | |
270 | while (1) { | |
271 | int data = tty_read(f, timeout); | |
272 | ||
273 | length++; | |
274 | if (data < 0) { | |
b041267e | 275 | printk(KERN_ERR "serial2002 error\n"); |
578c0183 AB |
276 | break; |
277 | } else if (data & 0x80) { | |
278 | result.value = (result.value << 7) | (data & 0x7f); | |
279 | } else { | |
280 | if (length == 1) { | |
281 | switch ((data >> 5) & 0x03) { | |
282 | case 0:{ | |
283 | result.value = 0; | |
284 | result.kind = is_digital; | |
285 | } | |
286 | break; | |
287 | case 1:{ | |
288 | result.value = 1; | |
289 | result.kind = is_digital; | |
290 | } | |
291 | break; | |
292 | } | |
293 | } else { | |
294 | result.value = | |
0a85b6f0 | 295 | (result.value << 2) | ((data & 0x60) >> 5); |
578c0183 AB |
296 | result.kind = is_channel; |
297 | } | |
298 | result.index = data & 0x1f; | |
299 | break; | |
300 | } | |
301 | } | |
302 | return result; | |
303 | ||
304 | } | |
305 | ||
306 | static void serial_write(struct file *f, struct serial_data data) | |
307 | { | |
308 | if (data.kind == is_digital) { | |
309 | unsigned char ch = | |
0a85b6f0 | 310 | ((data.value << 5) & 0x20) | (data.index & 0x1f); |
578c0183 AB |
311 | tty_write(f, &ch, 1); |
312 | } else { | |
313 | unsigned char ch[6]; | |
314 | int i = 0; | |
315 | if (data.value >= (1L << 30)) { | |
316 | ch[i] = 0x80 | ((data.value >> 30) & 0x03); | |
317 | i++; | |
318 | } | |
319 | if (data.value >= (1L << 23)) { | |
320 | ch[i] = 0x80 | ((data.value >> 23) & 0x7f); | |
321 | i++; | |
322 | } | |
323 | if (data.value >= (1L << 16)) { | |
324 | ch[i] = 0x80 | ((data.value >> 16) & 0x7f); | |
325 | i++; | |
326 | } | |
327 | if (data.value >= (1L << 9)) { | |
328 | ch[i] = 0x80 | ((data.value >> 9) & 0x7f); | |
329 | i++; | |
330 | } | |
331 | ch[i] = 0x80 | ((data.value >> 2) & 0x7f); | |
332 | i++; | |
333 | ch[i] = ((data.value << 5) & 0x60) | (data.index & 0x1f); | |
334 | i++; | |
335 | tty_write(f, ch, i); | |
336 | } | |
337 | } | |
338 | ||
3c17ba07 | 339 | static int serial_2002_open(struct comedi_device *dev) |
578c0183 | 340 | { |
9a1a6cf8 | 341 | struct serial2002_private *devpriv = dev->private; |
3c17ba07 | 342 | int result; |
578c0183 AB |
343 | char port[20]; |
344 | ||
345 | sprintf(port, "/dev/ttyS%d", devpriv->port); | |
2021937c | 346 | devpriv->tty = filp_open(port, O_RDWR, 0); |
578c0183 | 347 | if (IS_ERR(devpriv->tty)) { |
3c17ba07 | 348 | result = (int)PTR_ERR(devpriv->tty); |
b041267e | 349 | printk(KERN_ERR "serial_2002: file open error = %d\n", result); |
578c0183 | 350 | } else { |
e2b523aa BP |
351 | struct config_t { |
352 | ||
67a6efb1 IA |
353 | short int kind; |
354 | short int bits; | |
578c0183 AB |
355 | int min; |
356 | int max; | |
e2b523aa BP |
357 | }; |
358 | ||
668f272e IA |
359 | struct config_t *dig_in_config; |
360 | struct config_t *dig_out_config; | |
361 | struct config_t *chan_in_config; | |
362 | struct config_t *chan_out_config; | |
578c0183 AB |
363 | int i; |
364 | ||
9e7f2256 | 365 | result = 0; |
668f272e IA |
366 | dig_in_config = kcalloc(32, sizeof(struct config_t), |
367 | GFP_KERNEL); | |
368 | dig_out_config = kcalloc(32, sizeof(struct config_t), | |
369 | GFP_KERNEL); | |
370 | chan_in_config = kcalloc(32, sizeof(struct config_t), | |
371 | GFP_KERNEL); | |
372 | chan_out_config = kcalloc(32, sizeof(struct config_t), | |
373 | GFP_KERNEL); | |
374 | if (!dig_in_config || !dig_out_config | |
375 | || !chan_in_config || !chan_out_config) { | |
376 | result = -ENOMEM; | |
377 | goto err_alloc_configs; | |
578c0183 AB |
378 | } |
379 | ||
380 | tty_setspeed(devpriv->tty, devpriv->speed); | |
2696fb57 | 381 | poll_channel(devpriv->tty, 31); /* Start reading configuration */ |
578c0183 AB |
382 | while (1) { |
383 | struct serial_data data; | |
384 | ||
385 | data = serial_read(devpriv->tty, 1000); | |
386 | if (data.kind != is_channel || data.index != 31 | |
0a85b6f0 | 387 | || !(data.value & 0xe0)) { |
578c0183 AB |
388 | break; |
389 | } else { | |
390 | int command, channel, kind; | |
c5da2090 | 391 | struct config_t *cur_config = NULL; |
578c0183 AB |
392 | |
393 | channel = data.value & 0x1f; | |
394 | kind = (data.value >> 5) & 0x7; | |
395 | command = (data.value >> 8) & 0x3; | |
396 | switch (kind) { | |
397 | case 1:{ | |
398 | cur_config = dig_in_config; | |
399 | } | |
400 | break; | |
401 | case 2:{ | |
402 | cur_config = dig_out_config; | |
403 | } | |
404 | break; | |
405 | case 3:{ | |
406 | cur_config = chan_in_config; | |
407 | } | |
408 | break; | |
409 | case 4:{ | |
410 | cur_config = chan_out_config; | |
411 | } | |
412 | break; | |
413 | case 5:{ | |
414 | cur_config = chan_in_config; | |
415 | } | |
416 | break; | |
417 | } | |
418 | ||
419 | if (cur_config) { | |
420 | cur_config[channel].kind = kind; | |
421 | switch (command) { | |
422 | case 0:{ | |
0a85b6f0 MT |
423 | cur_config[channel].bits |
424 | = | |
425 | (data.value >> 10) & | |
426 | 0x3f; | |
578c0183 AB |
427 | } |
428 | break; | |
429 | case 1:{ | |
430 | int unit, sign, min; | |
0a85b6f0 MT |
431 | unit = |
432 | (data.value >> 10) & | |
433 | 0x7; | |
434 | sign = | |
435 | (data.value >> 13) & | |
436 | 0x1; | |
437 | min = | |
438 | (data.value >> 14) & | |
439 | 0xfffff; | |
578c0183 AB |
440 | |
441 | switch (unit) { | |
442 | case 0:{ | |
0a85b6f0 MT |
443 | min = |
444 | min | |
445 | * | |
446 | 1000000; | |
578c0183 AB |
447 | } |
448 | break; | |
449 | case 1:{ | |
0a85b6f0 MT |
450 | min = |
451 | min | |
452 | * | |
453 | 1000; | |
578c0183 AB |
454 | } |
455 | break; | |
456 | case 2:{ | |
0a85b6f0 MT |
457 | min = |
458 | min | |
459 | * 1; | |
578c0183 AB |
460 | } |
461 | break; | |
462 | } | |
e9d1cf89 | 463 | if (sign) |
578c0183 | 464 | min = -min; |
0a85b6f0 MT |
465 | cur_config[channel].min |
466 | = min; | |
578c0183 AB |
467 | } |
468 | break; | |
469 | case 2:{ | |
470 | int unit, sign, max; | |
0a85b6f0 MT |
471 | unit = |
472 | (data.value >> 10) & | |
473 | 0x7; | |
474 | sign = | |
475 | (data.value >> 13) & | |
476 | 0x1; | |
477 | max = | |
478 | (data.value >> 14) & | |
479 | 0xfffff; | |
578c0183 AB |
480 | |
481 | switch (unit) { | |
482 | case 0:{ | |
0a85b6f0 MT |
483 | max = |
484 | max | |
485 | * | |
486 | 1000000; | |
578c0183 AB |
487 | } |
488 | break; | |
489 | case 1:{ | |
0a85b6f0 MT |
490 | max = |
491 | max | |
492 | * | |
493 | 1000; | |
578c0183 AB |
494 | } |
495 | break; | |
496 | case 2:{ | |
0a85b6f0 MT |
497 | max = |
498 | max | |
499 | * 1; | |
578c0183 AB |
500 | } |
501 | break; | |
502 | } | |
e9d1cf89 | 503 | if (sign) |
578c0183 | 504 | max = -max; |
0a85b6f0 MT |
505 | cur_config[channel].max |
506 | = max; | |
578c0183 AB |
507 | } |
508 | break; | |
509 | } | |
510 | } | |
511 | } | |
512 | } | |
513 | for (i = 0; i <= 4; i++) { | |
2696fb57 | 514 | /* Fill in subdev data */ |
e2b523aa | 515 | struct config_t *c; |
c5da2090 IA |
516 | unsigned char *mapping = NULL; |
517 | struct serial2002_range_table_t *range = NULL; | |
578c0183 AB |
518 | int kind = 0; |
519 | ||
520 | switch (i) { | |
521 | case 0:{ | |
522 | c = dig_in_config; | |
523 | mapping = devpriv->digital_in_mapping; | |
524 | kind = 1; | |
525 | } | |
526 | break; | |
527 | case 1:{ | |
528 | c = dig_out_config; | |
529 | mapping = devpriv->digital_out_mapping; | |
530 | kind = 2; | |
531 | } | |
532 | break; | |
533 | case 2:{ | |
534 | c = chan_in_config; | |
535 | mapping = devpriv->analog_in_mapping; | |
536 | range = devpriv->in_range; | |
537 | kind = 3; | |
538 | } | |
539 | break; | |
540 | case 3:{ | |
541 | c = chan_out_config; | |
542 | mapping = devpriv->analog_out_mapping; | |
543 | range = devpriv->out_range; | |
544 | kind = 4; | |
545 | } | |
546 | break; | |
547 | case 4:{ | |
548 | c = chan_in_config; | |
549 | mapping = devpriv->encoder_in_mapping; | |
550 | range = devpriv->in_range; | |
551 | kind = 5; | |
552 | } | |
553 | break; | |
554 | default:{ | |
c5da2090 | 555 | c = NULL; |
578c0183 AB |
556 | } |
557 | break; | |
558 | } | |
559 | if (c) { | |
34c43922 | 560 | struct comedi_subdevice *s; |
0a85b6f0 MT |
561 | const struct comedi_lrange **range_table_list = |
562 | NULL; | |
578c0183 AB |
563 | unsigned int *maxdata_list; |
564 | int j, chan; | |
565 | ||
566 | for (chan = 0, j = 0; j < 32; j++) { | |
e9d1cf89 | 567 | if (c[j].kind == kind) |
578c0183 | 568 | chan++; |
578c0183 AB |
569 | } |
570 | s = &dev->subdevices[i]; | |
571 | s->n_chan = chan; | |
572 | s->maxdata = 0; | |
9e7f2256 | 573 | kfree(s->maxdata_list); |
578c0183 | 574 | s->maxdata_list = maxdata_list = |
0a85b6f0 MT |
575 | kmalloc(sizeof(unsigned int) * s->n_chan, |
576 | GFP_KERNEL); | |
9e7f2256 IA |
577 | if (!s->maxdata_list) |
578 | break; /* error handled below */ | |
579 | kfree(s->range_table_list); | |
580 | s->range_table = NULL; | |
581 | s->range_table_list = NULL; | |
0edc7d83 IA |
582 | if (kind == 1 || kind == 2) { |
583 | s->range_table = &range_digital; | |
584 | } else if (range) { | |
578c0183 | 585 | s->range_table_list = range_table_list = |
0a85b6f0 MT |
586 | kmalloc(sizeof |
587 | (struct | |
588 | serial2002_range_table_t) * | |
589 | s->n_chan, GFP_KERNEL); | |
9e7f2256 IA |
590 | if (!s->range_table_list) |
591 | break; /* err handled below */ | |
578c0183 AB |
592 | } |
593 | for (chan = 0, j = 0; j < 32; j++) { | |
594 | if (c[j].kind == kind) { | |
e9d1cf89 | 595 | if (mapping) |
578c0183 | 596 | mapping[chan] = j; |
578c0183 AB |
597 | if (range) { |
598 | range[j].length = 1; | |
599 | range[j].range.min = | |
0a85b6f0 | 600 | c[j].min; |
578c0183 | 601 | range[j].range.max = |
0a85b6f0 | 602 | c[j].max; |
578c0183 | 603 | range_table_list[chan] = |
0a85b6f0 MT |
604 | (const struct |
605 | comedi_lrange *) | |
606 | &range[j]; | |
578c0183 AB |
607 | } |
608 | maxdata_list[chan] = | |
0a85b6f0 MT |
609 | ((long long)1 << c[j].bits) |
610 | - 1; | |
578c0183 AB |
611 | chan++; |
612 | } | |
613 | } | |
614 | } | |
615 | } | |
9e7f2256 IA |
616 | if (i <= 4) { |
617 | /* Failed to allocate maxdata_list or range_table_list | |
618 | * for a subdevice that needed it. */ | |
619 | result = -ENOMEM; | |
620 | for (i = 0; i <= 4; i++) { | |
621 | struct comedi_subdevice *s; | |
622 | ||
623 | s = &dev->subdevices[i]; | |
624 | kfree(s->maxdata_list); | |
625 | s->maxdata_list = NULL; | |
626 | kfree(s->range_table_list); | |
627 | s->range_table_list = NULL; | |
628 | } | |
629 | } | |
668f272e IA |
630 | |
631 | err_alloc_configs: | |
632 | kfree(dig_in_config); | |
633 | kfree(dig_out_config); | |
634 | kfree(chan_in_config); | |
635 | kfree(chan_out_config); | |
636 | ||
9e7f2256 IA |
637 | if (result) { |
638 | if (devpriv->tty) { | |
27494c09 | 639 | filp_close(devpriv->tty, NULL); |
9e7f2256 IA |
640 | devpriv->tty = NULL; |
641 | } | |
642 | } | |
578c0183 | 643 | } |
3c17ba07 | 644 | return result; |
578c0183 AB |
645 | } |
646 | ||
da91b269 | 647 | static void serial_2002_close(struct comedi_device *dev) |
578c0183 | 648 | { |
9a1a6cf8 HS |
649 | struct serial2002_private *devpriv = dev->private; |
650 | ||
27494c09 HS |
651 | if (!IS_ERR(devpriv->tty) && devpriv->tty) |
652 | filp_close(devpriv->tty, NULL); | |
578c0183 AB |
653 | } |
654 | ||
0a85b6f0 MT |
655 | static int serial2002_di_rinsn(struct comedi_device *dev, |
656 | struct comedi_subdevice *s, | |
657 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 658 | { |
9a1a6cf8 | 659 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
660 | int n; |
661 | int chan; | |
662 | ||
663 | chan = devpriv->digital_in_mapping[CR_CHAN(insn->chanspec)]; | |
664 | for (n = 0; n < insn->n; n++) { | |
665 | struct serial_data read; | |
666 | ||
667 | poll_digital(devpriv->tty, chan); | |
668 | while (1) { | |
669 | read = serial_read(devpriv->tty, 1000); | |
e9d1cf89 | 670 | if (read.kind != is_digital || read.index == chan) |
578c0183 | 671 | break; |
578c0183 AB |
672 | } |
673 | data[n] = read.value; | |
674 | } | |
675 | return n; | |
676 | } | |
677 | ||
0a85b6f0 MT |
678 | static int serial2002_do_winsn(struct comedi_device *dev, |
679 | struct comedi_subdevice *s, | |
680 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 681 | { |
9a1a6cf8 | 682 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
683 | int n; |
684 | int chan; | |
685 | ||
686 | chan = devpriv->digital_out_mapping[CR_CHAN(insn->chanspec)]; | |
687 | for (n = 0; n < insn->n; n++) { | |
688 | struct serial_data write; | |
689 | ||
690 | write.kind = is_digital; | |
691 | write.index = chan; | |
692 | write.value = data[n]; | |
693 | serial_write(devpriv->tty, write); | |
694 | } | |
695 | return n; | |
696 | } | |
697 | ||
0a85b6f0 MT |
698 | static int serial2002_ai_rinsn(struct comedi_device *dev, |
699 | struct comedi_subdevice *s, | |
700 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 701 | { |
9a1a6cf8 | 702 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
703 | int n; |
704 | int chan; | |
705 | ||
706 | chan = devpriv->analog_in_mapping[CR_CHAN(insn->chanspec)]; | |
707 | for (n = 0; n < insn->n; n++) { | |
708 | struct serial_data read; | |
709 | ||
710 | poll_channel(devpriv->tty, chan); | |
711 | while (1) { | |
712 | read = serial_read(devpriv->tty, 1000); | |
e9d1cf89 | 713 | if (read.kind != is_channel || read.index == chan) |
578c0183 | 714 | break; |
578c0183 AB |
715 | } |
716 | data[n] = read.value; | |
717 | } | |
718 | return n; | |
719 | } | |
720 | ||
0a85b6f0 MT |
721 | static int serial2002_ao_winsn(struct comedi_device *dev, |
722 | struct comedi_subdevice *s, | |
723 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 724 | { |
9a1a6cf8 | 725 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
726 | int n; |
727 | int chan; | |
728 | ||
729 | chan = devpriv->analog_out_mapping[CR_CHAN(insn->chanspec)]; | |
730 | for (n = 0; n < insn->n; n++) { | |
731 | struct serial_data write; | |
732 | ||
733 | write.kind = is_channel; | |
734 | write.index = chan; | |
735 | write.value = data[n]; | |
736 | serial_write(devpriv->tty, write); | |
737 | devpriv->ao_readback[chan] = data[n]; | |
738 | } | |
739 | return n; | |
740 | } | |
741 | ||
0a85b6f0 MT |
742 | static int serial2002_ao_rinsn(struct comedi_device *dev, |
743 | struct comedi_subdevice *s, | |
744 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 745 | { |
9a1a6cf8 | 746 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
747 | int n; |
748 | int chan = CR_CHAN(insn->chanspec); | |
749 | ||
e9d1cf89 | 750 | for (n = 0; n < insn->n; n++) |
578c0183 | 751 | data[n] = devpriv->ao_readback[chan]; |
578c0183 AB |
752 | |
753 | return n; | |
754 | } | |
755 | ||
0a85b6f0 MT |
756 | static int serial2002_ei_rinsn(struct comedi_device *dev, |
757 | struct comedi_subdevice *s, | |
758 | struct comedi_insn *insn, unsigned int *data) | |
578c0183 | 759 | { |
9a1a6cf8 | 760 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
761 | int n; |
762 | int chan; | |
763 | ||
764 | chan = devpriv->encoder_in_mapping[CR_CHAN(insn->chanspec)]; | |
765 | for (n = 0; n < insn->n; n++) { | |
766 | struct serial_data read; | |
767 | ||
768 | poll_channel(devpriv->tty, chan); | |
769 | while (1) { | |
770 | read = serial_read(devpriv->tty, 1000); | |
e9d1cf89 | 771 | if (read.kind != is_channel || read.index == chan) |
578c0183 | 772 | break; |
578c0183 AB |
773 | } |
774 | data[n] = read.value; | |
775 | } | |
776 | return n; | |
777 | } | |
778 | ||
0a85b6f0 MT |
779 | static int serial2002_attach(struct comedi_device *dev, |
780 | struct comedi_devconfig *it) | |
578c0183 | 781 | { |
9a1a6cf8 | 782 | struct serial2002_private *devpriv; |
34c43922 | 783 | struct comedi_subdevice *s; |
8b6c5694 | 784 | int ret; |
578c0183 | 785 | |
f41ad667 | 786 | dev_dbg(dev->class_dev, "serial2002: attach\n"); |
04a542d4 | 787 | dev->board_name = dev->driver->driver_name; |
9a1a6cf8 | 788 | |
c34fa261 HS |
789 | devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); |
790 | if (!devpriv) | |
791 | return -ENOMEM; | |
792 | dev->private = devpriv; | |
9a1a6cf8 | 793 | |
578c0183 AB |
794 | dev->open = serial_2002_open; |
795 | dev->close = serial_2002_close; | |
796 | devpriv->port = it->options[0]; | |
797 | devpriv->speed = it->options[1]; | |
f41ad667 | 798 | dev_dbg(dev->class_dev, "/dev/ttyS%d @ %d\n", devpriv->port, |
3dbeb83c | 799 | devpriv->speed); |
578c0183 | 800 | |
8b6c5694 HS |
801 | ret = comedi_alloc_subdevices(dev, 5); |
802 | if (ret) | |
803 | return ret; | |
578c0183 AB |
804 | |
805 | /* digital input subdevice */ | |
8e27a730 | 806 | s = &dev->subdevices[0]; |
578c0183 AB |
807 | s->type = COMEDI_SUBD_DI; |
808 | s->subdev_flags = SDF_READABLE; | |
809 | s->n_chan = 0; | |
810 | s->maxdata = 1; | |
811 | s->range_table = &range_digital; | |
812 | s->insn_read = &serial2002_di_rinsn; | |
813 | ||
814 | /* digital output subdevice */ | |
8e27a730 | 815 | s = &dev->subdevices[1]; |
578c0183 AB |
816 | s->type = COMEDI_SUBD_DO; |
817 | s->subdev_flags = SDF_WRITEABLE; | |
818 | s->n_chan = 0; | |
819 | s->maxdata = 1; | |
820 | s->range_table = &range_digital; | |
821 | s->insn_write = &serial2002_do_winsn; | |
822 | ||
823 | /* analog input subdevice */ | |
8e27a730 | 824 | s = &dev->subdevices[2]; |
578c0183 AB |
825 | s->type = COMEDI_SUBD_AI; |
826 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
827 | s->n_chan = 0; | |
828 | s->maxdata = 1; | |
27494c09 | 829 | s->range_table = NULL; |
578c0183 AB |
830 | s->insn_read = &serial2002_ai_rinsn; |
831 | ||
832 | /* analog output subdevice */ | |
8e27a730 | 833 | s = &dev->subdevices[3]; |
578c0183 AB |
834 | s->type = COMEDI_SUBD_AO; |
835 | s->subdev_flags = SDF_WRITEABLE; | |
836 | s->n_chan = 0; | |
837 | s->maxdata = 1; | |
27494c09 | 838 | s->range_table = NULL; |
578c0183 AB |
839 | s->insn_write = &serial2002_ao_winsn; |
840 | s->insn_read = &serial2002_ao_rinsn; | |
841 | ||
842 | /* encoder input subdevice */ | |
8e27a730 | 843 | s = &dev->subdevices[4]; |
578c0183 AB |
844 | s->type = COMEDI_SUBD_COUNTER; |
845 | s->subdev_flags = SDF_READABLE | SDF_LSAMPL; | |
846 | s->n_chan = 0; | |
847 | s->maxdata = 1; | |
27494c09 | 848 | s->range_table = NULL; |
578c0183 AB |
849 | s->insn_read = &serial2002_ei_rinsn; |
850 | ||
851 | return 1; | |
852 | } | |
853 | ||
484ecc95 | 854 | static void serial2002_detach(struct comedi_device *dev) |
578c0183 | 855 | { |
34c43922 | 856 | struct comedi_subdevice *s; |
578c0183 AB |
857 | int i; |
858 | ||
fa3b5d9a | 859 | for (i = 0; i < 5; i++) { |
578c0183 | 860 | s = &dev->subdevices[i]; |
e4e1f289 IM |
861 | kfree(s->maxdata_list); |
862 | kfree(s->range_table_list); | |
578c0183 | 863 | } |
578c0183 AB |
864 | } |
865 | ||
294f930d | 866 | static struct comedi_driver serial2002_driver = { |
cb1648b4 HS |
867 | .driver_name = "serial2002", |
868 | .module = THIS_MODULE, | |
869 | .attach = serial2002_attach, | |
870 | .detach = serial2002_detach, | |
cb1648b4 | 871 | }; |
294f930d | 872 | module_comedi_driver(serial2002_driver); |
90f703d3 AT |
873 | |
874 | MODULE_AUTHOR("Comedi http://www.comedi.org"); | |
875 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
876 | MODULE_LICENSE("GPL"); |