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. | |
578c0183 AB |
17 | */ |
18 | ||
19 | /* | |
20 | Driver: serial2002 | |
21 | Description: Driver for serial connected hardware | |
22 | Devices: | |
23 | Author: Anders Blomdell | |
24 | Updated: Fri, 7 Jun 2002 12:56:45 -0700 | |
25 | Status: in development | |
26 | ||
27 | */ | |
28 | ||
29 | #include "../comedidev.h" | |
30 | ||
31 | #include <linux/delay.h> | |
32 | #include <linux/ioport.h> | |
02921484 | 33 | #include <linux/sched.h> |
5a0e3ad6 | 34 | #include <linux/slab.h> |
578c0183 | 35 | |
b041267e | 36 | #include <linux/termios.h> |
578c0183 AB |
37 | #include <asm/ioctls.h> |
38 | #include <linux/serial.h> | |
39 | #include <linux/poll.h> | |
40 | ||
b3fb588d BP |
41 | struct serial2002_range_table_t { |
42 | ||
2696fb57 | 43 | /* HACK... */ |
578c0183 | 44 | int length; |
1f6325d6 | 45 | struct comedi_krange range; |
b3fb588d BP |
46 | }; |
47 | ||
e21ffa44 BP |
48 | struct serial2002_private { |
49 | ||
2696fb57 BP |
50 | int port; /* /dev/ttyS<port> */ |
51 | int speed; /* baudrate */ | |
578c0183 | 52 | struct file *tty; |
790c5541 | 53 | unsigned int ao_readback[32]; |
578c0183 AB |
54 | unsigned char digital_in_mapping[32]; |
55 | unsigned char digital_out_mapping[32]; | |
56 | unsigned char analog_in_mapping[32]; | |
57 | unsigned char analog_out_mapping[32]; | |
58 | unsigned char encoder_in_mapping[32]; | |
b3fb588d | 59 | struct serial2002_range_table_t in_range[32], out_range[32]; |
e21ffa44 BP |
60 | }; |
61 | ||
578c0183 AB |
62 | struct serial_data { |
63 | enum { is_invalid, is_digital, is_channel } kind; | |
64 | int index; | |
65 | unsigned long value; | |
66 | }; | |
67 | ||
ee422bb6 HS |
68 | /* |
69 | * The configuration serial_data.value read from the device is | |
70 | * a bitmask that defines specific options of a channel: | |
71 | * | |
72 | * 4:0 - the channel to configure | |
73 | * 7:5 - the kind of channel | |
74 | * 9:8 - the command used to configure the channel | |
75 | * | |
76 | * The remaining bits vary in use depending on the command: | |
77 | * | |
78 | * BITS 15:10 - the channel bits (maxdata) | |
79 | * MIN/MAX 12:10 - the units multiplier for the scale | |
80 | * 13 - the sign of the scale | |
81 | * 33:14 - the base value for the range | |
82 | */ | |
83 | #define S2002_CFG_CHAN(x) ((x) & 0x1f) | |
84 | #define S2002_CFG_KIND(x) (((x) >> 5) & 0x7) | |
85 | #define S2002_CFG_KIND_INVALID 0 | |
86 | #define S2002_CFG_KIND_DIGITAL_IN 1 | |
87 | #define S2002_CFG_KIND_DIGITAL_OUT 2 | |
88 | #define S2002_CFG_KIND_ANALOG_IN 3 | |
89 | #define S2002_CFG_KIND_ANALOG_OUT 4 | |
90 | #define S2002_CFG_KIND_ENCODER_IN 5 | |
91 | #define S2002_CFG_CMD(x) (((x) >> 8) & 0x3) | |
92 | #define S2002_CFG_CMD_BITS 0 | |
93 | #define S2002_CFG_CMD_MIN 1 | |
94 | #define S2002_CFG_CMD_MAX 2 | |
95 | #define S2002_CFG_BITS(x) (((x) >> 10) & 0x3f) | |
96 | #define S2002_CFG_UNITS(x) (((x) >> 10) & 0x7) | |
97 | #define S2002_CFG_SIGN(x) (((x) >> 13) & 0x1) | |
98 | #define S2002_CFG_BASE(x) (((x) >> 14) & 0xfffff) | |
99 | ||
a058be68 HS |
100 | static long serial2002_tty_ioctl(struct file *f, unsigned op, |
101 | unsigned long param) | |
578c0183 | 102 | { |
00a1855c | 103 | if (f->f_op->unlocked_ioctl) |
578c0183 | 104 | return f->f_op->unlocked_ioctl(f, op, param); |
00a1855c | 105 | |
578c0183 AB |
106 | return -ENOSYS; |
107 | } | |
108 | ||
a058be68 | 109 | static int serial2002_tty_write(struct file *f, unsigned char *buf, int count) |
578c0183 | 110 | { |
32ef0e3e | 111 | const char __user *p = (__force const char __user *)buf; |
578c0183 AB |
112 | int result; |
113 | mm_segment_t oldfs; | |
114 | ||
115 | oldfs = get_fs(); | |
116 | set_fs(KERNEL_DS); | |
117 | f->f_pos = 0; | |
32ef0e3e | 118 | result = f->f_op->write(f, p, count, &f->f_pos); |
578c0183 AB |
119 | set_fs(oldfs); |
120 | return result; | |
121 | } | |
122 | ||
a058be68 | 123 | static int serial2002_tty_readb(struct file *f, unsigned char *buf) |
32ef0e3e HS |
124 | { |
125 | char __user *p = (__force char __user *)buf; | |
126 | ||
127 | f->f_pos = 0; | |
128 | return f->f_op->read(f, p, 1, &f->f_pos); | |
129 | } | |
130 | ||
a058be68 | 131 | static void serial2002_tty_read_poll_wait(struct file *f, int timeout) |
0a245982 HS |
132 | { |
133 | struct poll_wqueues table; | |
134 | struct timeval start, now; | |
135 | ||
136 | do_gettimeofday(&start); | |
137 | poll_initwait(&table); | |
138 | while (1) { | |
139 | long elapsed; | |
140 | int mask; | |
141 | ||
142 | mask = f->f_op->poll(f, &table.pt); | |
143 | if (mask & (POLLRDNORM | POLLRDBAND | POLLIN | | |
144 | POLLHUP | POLLERR)) { | |
145 | break; | |
146 | } | |
147 | do_gettimeofday(&now); | |
148 | elapsed = (1000000 * (now.tv_sec - start.tv_sec) + | |
149 | now.tv_usec - start.tv_usec); | |
150 | if (elapsed > timeout) | |
151 | break; | |
152 | set_current_state(TASK_INTERRUPTIBLE); | |
153 | schedule_timeout(((timeout - elapsed) * HZ) / 10000); | |
154 | } | |
155 | poll_freewait(&table); | |
156 | } | |
157 | ||
a058be68 | 158 | static int serial2002_tty_read(struct file *f, int timeout) |
578c0183 | 159 | { |
32ef0e3e | 160 | unsigned char ch; |
578c0183 AB |
161 | int result; |
162 | ||
163 | result = -1; | |
164 | if (!IS_ERR(f)) { | |
165 | mm_segment_t oldfs; | |
166 | ||
167 | oldfs = get_fs(); | |
168 | set_fs(KERNEL_DS); | |
169 | if (f->f_op->poll) { | |
a058be68 | 170 | serial2002_tty_read_poll_wait(f, timeout); |
578c0183 | 171 | |
a058be68 | 172 | if (serial2002_tty_readb(f, &ch) == 1) |
32ef0e3e | 173 | result = ch; |
578c0183 AB |
174 | } else { |
175 | /* Device does not support poll, busy wait */ | |
176 | int retries = 0; | |
177 | while (1) { | |
578c0183 | 178 | retries++; |
b041267e | 179 | if (retries >= timeout) |
578c0183 | 180 | break; |
578c0183 | 181 | |
a058be68 | 182 | if (serial2002_tty_readb(f, &ch) == 1) { |
356cdbcb | 183 | result = ch; |
578c0183 AB |
184 | break; |
185 | } | |
5f74ea14 | 186 | udelay(100); |
578c0183 AB |
187 | } |
188 | } | |
189 | set_fs(oldfs); | |
190 | } | |
191 | return result; | |
192 | } | |
193 | ||
a058be68 | 194 | static void serial2002_tty_setspeed(struct file *f, int speed) |
578c0183 | 195 | { |
071e0866 HS |
196 | struct termios termios; |
197 | struct serial_struct serial; | |
578c0183 AB |
198 | mm_segment_t oldfs; |
199 | ||
200 | oldfs = get_fs(); | |
201 | set_fs(KERNEL_DS); | |
578c0183 | 202 | |
071e0866 | 203 | /* Set speed */ |
a058be68 | 204 | serial2002_tty_ioctl(f, TCGETS, (unsigned long)&termios); |
071e0866 HS |
205 | termios.c_iflag = 0; |
206 | termios.c_oflag = 0; | |
207 | termios.c_lflag = 0; | |
208 | termios.c_cflag = CLOCAL | CS8 | CREAD; | |
209 | termios.c_cc[VMIN] = 0; | |
210 | termios.c_cc[VTIME] = 0; | |
211 | switch (speed) { | |
212 | case 2400: | |
213 | termios.c_cflag |= B2400; | |
214 | break; | |
215 | case 4800: | |
216 | termios.c_cflag |= B4800; | |
217 | break; | |
218 | case 9600: | |
219 | termios.c_cflag |= B9600; | |
220 | break; | |
221 | case 19200: | |
222 | termios.c_cflag |= B19200; | |
223 | break; | |
224 | case 38400: | |
225 | termios.c_cflag |= B38400; | |
226 | break; | |
227 | case 57600: | |
228 | termios.c_cflag |= B57600; | |
229 | break; | |
230 | case 115200: | |
231 | termios.c_cflag |= B115200; | |
232 | break; | |
233 | default: | |
234 | termios.c_cflag |= B9600; | |
235 | break; | |
578c0183 | 236 | } |
a058be68 | 237 | serial2002_tty_ioctl(f, TCSETS, (unsigned long)&termios); |
071e0866 HS |
238 | |
239 | /* Set low latency */ | |
a058be68 | 240 | serial2002_tty_ioctl(f, TIOCGSERIAL, (unsigned long)&serial); |
071e0866 | 241 | serial.flags |= ASYNC_LOW_LATENCY; |
a058be68 | 242 | serial2002_tty_ioctl(f, TIOCSSERIAL, (unsigned long)&serial); |
578c0183 AB |
243 | |
244 | set_fs(oldfs); | |
245 | } | |
246 | ||
a058be68 | 247 | static void serial2002_poll_digital(struct file *f, int channel) |
578c0183 AB |
248 | { |
249 | char cmd; | |
250 | ||
251 | cmd = 0x40 | (channel & 0x1f); | |
a058be68 | 252 | serial2002_tty_write(f, &cmd, 1); |
578c0183 AB |
253 | } |
254 | ||
a058be68 | 255 | static void serial2002_poll_channel(struct file *f, int channel) |
578c0183 AB |
256 | { |
257 | char cmd; | |
258 | ||
259 | cmd = 0x60 | (channel & 0x1f); | |
a058be68 | 260 | serial2002_tty_write(f, &cmd, 1); |
578c0183 AB |
261 | } |
262 | ||
a058be68 | 263 | static struct serial_data serial2002_read(struct file *f, int timeout) |
578c0183 AB |
264 | { |
265 | struct serial_data result; | |
266 | int length; | |
267 | ||
268 | result.kind = is_invalid; | |
269 | result.index = 0; | |
270 | result.value = 0; | |
271 | length = 0; | |
272 | while (1) { | |
a058be68 | 273 | int data = serial2002_tty_read(f, timeout); |
578c0183 AB |
274 | |
275 | length++; | |
276 | if (data < 0) { | |
578c0183 AB |
277 | break; |
278 | } else if (data & 0x80) { | |
279 | result.value = (result.value << 7) | (data & 0x7f); | |
280 | } else { | |
281 | if (length == 1) { | |
282 | switch ((data >> 5) & 0x03) { | |
761a38a4 HS |
283 | case 0: |
284 | result.value = 0; | |
285 | result.kind = is_digital; | |
578c0183 | 286 | break; |
761a38a4 HS |
287 | case 1: |
288 | result.value = 1; | |
289 | result.kind = is_digital; | |
578c0183 AB |
290 | break; |
291 | } | |
292 | } else { | |
293 | result.value = | |
0a85b6f0 | 294 | (result.value << 2) | ((data & 0x60) >> 5); |
578c0183 AB |
295 | result.kind = is_channel; |
296 | } | |
297 | result.index = data & 0x1f; | |
298 | break; | |
299 | } | |
300 | } | |
301 | return result; | |
302 | ||
303 | } | |
304 | ||
a058be68 | 305 | static void serial2002_write(struct file *f, struct serial_data data) |
578c0183 AB |
306 | { |
307 | if (data.kind == is_digital) { | |
308 | unsigned char ch = | |
0a85b6f0 | 309 | ((data.value << 5) & 0x20) | (data.index & 0x1f); |
a058be68 | 310 | serial2002_tty_write(f, &ch, 1); |
578c0183 AB |
311 | } else { |
312 | unsigned char ch[6]; | |
313 | int i = 0; | |
314 | if (data.value >= (1L << 30)) { | |
315 | ch[i] = 0x80 | ((data.value >> 30) & 0x03); | |
316 | i++; | |
317 | } | |
318 | if (data.value >= (1L << 23)) { | |
319 | ch[i] = 0x80 | ((data.value >> 23) & 0x7f); | |
320 | i++; | |
321 | } | |
322 | if (data.value >= (1L << 16)) { | |
323 | ch[i] = 0x80 | ((data.value >> 16) & 0x7f); | |
324 | i++; | |
325 | } | |
326 | if (data.value >= (1L << 9)) { | |
327 | ch[i] = 0x80 | ((data.value >> 9) & 0x7f); | |
328 | i++; | |
329 | } | |
330 | ch[i] = 0x80 | ((data.value >> 2) & 0x7f); | |
331 | i++; | |
332 | ch[i] = ((data.value << 5) & 0x60) | (data.index & 0x1f); | |
333 | i++; | |
a058be68 | 334 | serial2002_tty_write(f, ch, i); |
578c0183 AB |
335 | } |
336 | } | |
337 | ||
623a7392 HS |
338 | struct config_t { |
339 | short int kind; | |
340 | short int bits; | |
341 | int min; | |
342 | int max; | |
343 | }; | |
344 | ||
345 | static int serial2002_setup_subdevice(struct comedi_subdevice *s, | |
346 | struct config_t *cfg, | |
347 | struct serial2002_range_table_t *range, | |
348 | unsigned char *mapping, | |
349 | int kind) | |
350 | { | |
351 | const struct comedi_lrange **range_table_list = NULL; | |
352 | unsigned int *maxdata_list; | |
353 | int j, chan; | |
354 | ||
355 | for (chan = 0, j = 0; j < 32; j++) { | |
356 | if (cfg[j].kind == kind) | |
357 | chan++; | |
358 | } | |
359 | s->n_chan = chan; | |
360 | s->maxdata = 0; | |
361 | kfree(s->maxdata_list); | |
362 | maxdata_list = kmalloc(sizeof(unsigned int) * s->n_chan, GFP_KERNEL); | |
363 | if (!maxdata_list) | |
364 | return -ENOMEM; | |
365 | s->maxdata_list = maxdata_list; | |
366 | kfree(s->range_table_list); | |
367 | s->range_table = NULL; | |
368 | s->range_table_list = NULL; | |
369 | if (kind == 1 || kind == 2) { | |
370 | s->range_table = &range_digital; | |
371 | } else if (range) { | |
372 | range_table_list = | |
373 | kmalloc(sizeof(struct serial2002_range_table_t) * | |
374 | s->n_chan, GFP_KERNEL); | |
375 | if (!range_table_list) | |
376 | return -ENOMEM; | |
377 | s->range_table_list = range_table_list; | |
378 | } | |
379 | for (chan = 0, j = 0; j < 32; j++) { | |
380 | if (cfg[j].kind == kind) { | |
381 | if (mapping) | |
382 | mapping[chan] = j; | |
383 | if (range) { | |
384 | range[j].length = 1; | |
385 | range[j].range.min = cfg[j].min; | |
386 | range[j].range.max = cfg[j].max; | |
387 | range_table_list[chan] = | |
388 | (const struct comedi_lrange *)&range[j]; | |
389 | } | |
390 | maxdata_list[chan] = ((long long)1 << cfg[j].bits) - 1; | |
391 | chan++; | |
392 | } | |
393 | } | |
394 | return 0; | |
395 | } | |
396 | ||
397 | static int serial2002_setup_subdevs(struct comedi_device *dev) | |
578c0183 | 398 | { |
9a1a6cf8 | 399 | struct serial2002_private *devpriv = dev->private; |
623a7392 HS |
400 | struct config_t *di_cfg; |
401 | struct config_t *do_cfg; | |
402 | struct config_t *ai_cfg; | |
403 | struct config_t *ao_cfg; | |
404 | struct config_t *cfg; | |
405 | struct comedi_subdevice *s; | |
ee422bb6 | 406 | int result = 0; |
623a7392 HS |
407 | int i; |
408 | ||
ee422bb6 | 409 | /* Allocate the temporary structs to hold the configuration data */ |
623a7392 HS |
410 | di_cfg = kcalloc(32, sizeof(*cfg), GFP_KERNEL); |
411 | do_cfg = kcalloc(32, sizeof(*cfg), GFP_KERNEL); | |
412 | ai_cfg = kcalloc(32, sizeof(*cfg), GFP_KERNEL); | |
413 | ao_cfg = kcalloc(32, sizeof(*cfg), GFP_KERNEL); | |
414 | if (!di_cfg || !do_cfg || !ai_cfg || !ao_cfg) { | |
415 | result = -ENOMEM; | |
416 | goto err_alloc_configs; | |
417 | } | |
578c0183 | 418 | |
ee422bb6 | 419 | /* Read the configuration from the connected device */ |
a058be68 HS |
420 | serial2002_tty_setspeed(devpriv->tty, devpriv->speed); |
421 | serial2002_poll_channel(devpriv->tty, 31); | |
623a7392 HS |
422 | while (1) { |
423 | struct serial_data data; | |
578c0183 | 424 | |
a058be68 | 425 | data = serial2002_read(devpriv->tty, 1000); |
623a7392 | 426 | if (data.kind != is_channel || data.index != 31 || |
ee422bb6 | 427 | S2002_CFG_KIND(data.value) == S2002_CFG_KIND_INVALID) { |
623a7392 HS |
428 | break; |
429 | } else { | |
ee422bb6 HS |
430 | int channel = S2002_CFG_CHAN(data.value); |
431 | int range = S2002_CFG_BASE(data.value); | |
578c0183 | 432 | |
ee422bb6 HS |
433 | switch (S2002_CFG_KIND(data.value)) { |
434 | case S2002_CFG_KIND_DIGITAL_IN: | |
623a7392 | 435 | cfg = di_cfg; |
578c0183 | 436 | break; |
ee422bb6 | 437 | case S2002_CFG_KIND_DIGITAL_OUT: |
623a7392 HS |
438 | cfg = do_cfg; |
439 | break; | |
ee422bb6 | 440 | case S2002_CFG_KIND_ANALOG_IN: |
623a7392 HS |
441 | cfg = ai_cfg; |
442 | break; | |
ee422bb6 | 443 | case S2002_CFG_KIND_ANALOG_OUT: |
623a7392 HS |
444 | cfg = ao_cfg; |
445 | break; | |
ee422bb6 | 446 | case S2002_CFG_KIND_ENCODER_IN: |
623a7392 HS |
447 | cfg = ai_cfg; |
448 | break; | |
449 | default: | |
450 | cfg = NULL; | |
451 | break; | |
452 | } | |
ee422bb6 HS |
453 | if (!cfg) |
454 | continue; /* unknown kind, skip it */ | |
623a7392 | 455 | |
ee422bb6 | 456 | cfg[channel].kind = S2002_CFG_KIND(data.value); |
623a7392 | 457 | |
ee422bb6 HS |
458 | switch (S2002_CFG_CMD(data.value)) { |
459 | case S2002_CFG_CMD_BITS: | |
460 | cfg[channel].bits = S2002_CFG_BITS(data.value); | |
461 | break; | |
462 | case S2002_CFG_CMD_MIN: | |
463 | case S2002_CFG_CMD_MAX: | |
464 | switch (S2002_CFG_UNITS(data.value)) { | |
623a7392 | 465 | case 0: |
ee422bb6 | 466 | range *= 1000000; |
578c0183 | 467 | break; |
623a7392 | 468 | case 1: |
ee422bb6 | 469 | range *= 1000; |
578c0183 | 470 | break; |
623a7392 | 471 | case 2: |
ee422bb6 | 472 | range *= 1; |
623a7392 | 473 | break; |
578c0183 | 474 | } |
ee422bb6 HS |
475 | if (S2002_CFG_SIGN(data.value)) |
476 | range = -range; | |
477 | if (S2002_CFG_CMD(data.value) == | |
478 | S2002_CFG_CMD_MIN) | |
479 | cfg[channel].min = range; | |
480 | else | |
481 | cfg[channel].max = range; | |
482 | break; | |
578c0183 AB |
483 | } |
484 | } | |
623a7392 HS |
485 | } |
486 | ||
487 | /* Fill in subdevice data */ | |
488 | for (i = 0; i <= 4; i++) { | |
489 | unsigned char *mapping = NULL; | |
490 | struct serial2002_range_table_t *range = NULL; | |
491 | int kind = 0; | |
492 | ||
ee422bb6 HS |
493 | s = &dev->subdevices[i]; |
494 | ||
623a7392 HS |
495 | switch (i) { |
496 | case 0: | |
497 | cfg = di_cfg; | |
498 | mapping = devpriv->digital_in_mapping; | |
ee422bb6 | 499 | kind = S2002_CFG_KIND_DIGITAL_IN; |
623a7392 HS |
500 | break; |
501 | case 1: | |
502 | cfg = do_cfg; | |
503 | mapping = devpriv->digital_out_mapping; | |
ee422bb6 | 504 | kind = S2002_CFG_KIND_DIGITAL_OUT; |
623a7392 HS |
505 | break; |
506 | case 2: | |
507 | cfg = ai_cfg; | |
508 | mapping = devpriv->analog_in_mapping; | |
509 | range = devpriv->in_range; | |
ee422bb6 | 510 | kind = S2002_CFG_KIND_ANALOG_IN; |
623a7392 HS |
511 | break; |
512 | case 3: | |
513 | cfg = ao_cfg; | |
514 | mapping = devpriv->analog_out_mapping; | |
515 | range = devpriv->out_range; | |
ee422bb6 | 516 | kind = S2002_CFG_KIND_ANALOG_OUT; |
623a7392 HS |
517 | break; |
518 | case 4: | |
519 | cfg = ai_cfg; | |
520 | mapping = devpriv->encoder_in_mapping; | |
521 | range = devpriv->in_range; | |
ee422bb6 | 522 | kind = S2002_CFG_KIND_ENCODER_IN; |
623a7392 | 523 | break; |
578c0183 | 524 | } |
623a7392 | 525 | |
ee422bb6 HS |
526 | if (serial2002_setup_subdevice(s, cfg, range, mapping, kind)) |
527 | break; /* err handled below */ | |
623a7392 HS |
528 | } |
529 | if (i <= 4) { | |
530 | /* | |
531 | * Failed to allocate maxdata_list or range_table_list | |
532 | * for a subdevice that needed it. | |
533 | */ | |
534 | result = -ENOMEM; | |
535 | for (i = 0; i <= 4; i++) { | |
536 | s = &dev->subdevices[i]; | |
537 | kfree(s->maxdata_list); | |
538 | s->maxdata_list = NULL; | |
539 | kfree(s->range_table_list); | |
540 | s->range_table_list = NULL; | |
9e7f2256 | 541 | } |
623a7392 | 542 | } |
668f272e IA |
543 | |
544 | err_alloc_configs: | |
623a7392 HS |
545 | kfree(di_cfg); |
546 | kfree(do_cfg); | |
547 | kfree(ai_cfg); | |
548 | kfree(ao_cfg); | |
549 | ||
550 | if (result) { | |
551 | if (devpriv->tty) { | |
552 | filp_close(devpriv->tty, NULL); | |
553 | devpriv->tty = NULL; | |
9e7f2256 | 554 | } |
578c0183 | 555 | } |
623a7392 HS |
556 | |
557 | return result; | |
558 | } | |
559 | ||
a058be68 | 560 | static int serial2002_open(struct comedi_device *dev) |
623a7392 HS |
561 | { |
562 | struct serial2002_private *devpriv = dev->private; | |
563 | int result; | |
564 | char port[20]; | |
565 | ||
566 | sprintf(port, "/dev/ttyS%d", devpriv->port); | |
567 | devpriv->tty = filp_open(port, O_RDWR, 0); | |
568 | if (IS_ERR(devpriv->tty)) { | |
569 | result = (int)PTR_ERR(devpriv->tty); | |
570 | dev_err(dev->class_dev, "file open error = %d\n", result); | |
571 | } else { | |
572 | result = serial2002_setup_subdevs(dev); | |
573 | } | |
3c17ba07 | 574 | return result; |
578c0183 AB |
575 | } |
576 | ||
a058be68 | 577 | static void serial2002_close(struct comedi_device *dev) |
578c0183 | 578 | { |
9a1a6cf8 HS |
579 | struct serial2002_private *devpriv = dev->private; |
580 | ||
27494c09 HS |
581 | if (!IS_ERR(devpriv->tty) && devpriv->tty) |
582 | filp_close(devpriv->tty, NULL); | |
578c0183 AB |
583 | } |
584 | ||
adbd1741 HS |
585 | static int serial2002_di_insn_read(struct comedi_device *dev, |
586 | struct comedi_subdevice *s, | |
587 | struct comedi_insn *insn, | |
588 | unsigned int *data) | |
578c0183 | 589 | { |
9a1a6cf8 | 590 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
591 | int n; |
592 | int chan; | |
593 | ||
594 | chan = devpriv->digital_in_mapping[CR_CHAN(insn->chanspec)]; | |
595 | for (n = 0; n < insn->n; n++) { | |
596 | struct serial_data read; | |
597 | ||
a058be68 | 598 | serial2002_poll_digital(devpriv->tty, chan); |
578c0183 | 599 | while (1) { |
a058be68 | 600 | read = serial2002_read(devpriv->tty, 1000); |
e9d1cf89 | 601 | if (read.kind != is_digital || read.index == chan) |
578c0183 | 602 | break; |
578c0183 AB |
603 | } |
604 | data[n] = read.value; | |
605 | } | |
606 | return n; | |
607 | } | |
608 | ||
adbd1741 HS |
609 | static int serial2002_do_insn_write(struct comedi_device *dev, |
610 | struct comedi_subdevice *s, | |
611 | struct comedi_insn *insn, | |
612 | unsigned int *data) | |
578c0183 | 613 | { |
9a1a6cf8 | 614 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
615 | int n; |
616 | int chan; | |
617 | ||
618 | chan = devpriv->digital_out_mapping[CR_CHAN(insn->chanspec)]; | |
619 | for (n = 0; n < insn->n; n++) { | |
620 | struct serial_data write; | |
621 | ||
622 | write.kind = is_digital; | |
623 | write.index = chan; | |
624 | write.value = data[n]; | |
a058be68 | 625 | serial2002_write(devpriv->tty, write); |
578c0183 AB |
626 | } |
627 | return n; | |
628 | } | |
629 | ||
adbd1741 HS |
630 | static int serial2002_ai_insn_read(struct comedi_device *dev, |
631 | struct comedi_subdevice *s, | |
632 | struct comedi_insn *insn, | |
633 | unsigned int *data) | |
578c0183 | 634 | { |
9a1a6cf8 | 635 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
636 | int n; |
637 | int chan; | |
638 | ||
639 | chan = devpriv->analog_in_mapping[CR_CHAN(insn->chanspec)]; | |
640 | for (n = 0; n < insn->n; n++) { | |
641 | struct serial_data read; | |
642 | ||
a058be68 | 643 | serial2002_poll_channel(devpriv->tty, chan); |
578c0183 | 644 | while (1) { |
a058be68 | 645 | read = serial2002_read(devpriv->tty, 1000); |
e9d1cf89 | 646 | if (read.kind != is_channel || read.index == chan) |
578c0183 | 647 | break; |
578c0183 AB |
648 | } |
649 | data[n] = read.value; | |
650 | } | |
651 | return n; | |
652 | } | |
653 | ||
adbd1741 HS |
654 | static int serial2002_ao_insn_write(struct comedi_device *dev, |
655 | struct comedi_subdevice *s, | |
656 | struct comedi_insn *insn, | |
657 | 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->analog_out_mapping[CR_CHAN(insn->chanspec)]; | |
664 | for (n = 0; n < insn->n; n++) { | |
665 | struct serial_data write; | |
666 | ||
667 | write.kind = is_channel; | |
668 | write.index = chan; | |
669 | write.value = data[n]; | |
a058be68 | 670 | serial2002_write(devpriv->tty, write); |
578c0183 AB |
671 | devpriv->ao_readback[chan] = data[n]; |
672 | } | |
673 | return n; | |
674 | } | |
675 | ||
adbd1741 HS |
676 | static int serial2002_ao_insn_read(struct comedi_device *dev, |
677 | struct comedi_subdevice *s, | |
678 | struct comedi_insn *insn, | |
679 | unsigned int *data) | |
578c0183 | 680 | { |
9a1a6cf8 | 681 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
682 | int n; |
683 | int chan = CR_CHAN(insn->chanspec); | |
684 | ||
e9d1cf89 | 685 | for (n = 0; n < insn->n; n++) |
578c0183 | 686 | data[n] = devpriv->ao_readback[chan]; |
578c0183 AB |
687 | |
688 | return n; | |
689 | } | |
690 | ||
adbd1741 HS |
691 | static int serial2002_encoder_insn_read(struct comedi_device *dev, |
692 | struct comedi_subdevice *s, | |
693 | struct comedi_insn *insn, | |
694 | unsigned int *data) | |
578c0183 | 695 | { |
9a1a6cf8 | 696 | struct serial2002_private *devpriv = dev->private; |
578c0183 AB |
697 | int n; |
698 | int chan; | |
699 | ||
700 | chan = devpriv->encoder_in_mapping[CR_CHAN(insn->chanspec)]; | |
701 | for (n = 0; n < insn->n; n++) { | |
702 | struct serial_data read; | |
703 | ||
a058be68 | 704 | serial2002_poll_channel(devpriv->tty, chan); |
578c0183 | 705 | while (1) { |
a058be68 | 706 | read = serial2002_read(devpriv->tty, 1000); |
e9d1cf89 | 707 | if (read.kind != is_channel || read.index == chan) |
578c0183 | 708 | break; |
578c0183 AB |
709 | } |
710 | data[n] = read.value; | |
711 | } | |
712 | return n; | |
713 | } | |
714 | ||
0a85b6f0 MT |
715 | static int serial2002_attach(struct comedi_device *dev, |
716 | struct comedi_devconfig *it) | |
578c0183 | 717 | { |
9a1a6cf8 | 718 | struct serial2002_private *devpriv; |
34c43922 | 719 | struct comedi_subdevice *s; |
8b6c5694 | 720 | int ret; |
578c0183 | 721 | |
c34fa261 HS |
722 | devpriv = kzalloc(sizeof(*devpriv), GFP_KERNEL); |
723 | if (!devpriv) | |
724 | return -ENOMEM; | |
725 | dev->private = devpriv; | |
9a1a6cf8 | 726 | |
578c0183 AB |
727 | devpriv->port = it->options[0]; |
728 | devpriv->speed = it->options[1]; | |
578c0183 | 729 | |
8b6c5694 HS |
730 | ret = comedi_alloc_subdevices(dev, 5); |
731 | if (ret) | |
732 | return ret; | |
578c0183 AB |
733 | |
734 | /* digital input subdevice */ | |
8e27a730 | 735 | s = &dev->subdevices[0]; |
adbd1741 HS |
736 | s->type = COMEDI_SUBD_DI; |
737 | s->subdev_flags = SDF_READABLE; | |
738 | s->n_chan = 0; | |
739 | s->maxdata = 1; | |
740 | s->range_table = &range_digital; | |
741 | s->insn_read = serial2002_di_insn_read; | |
578c0183 AB |
742 | |
743 | /* digital output subdevice */ | |
8e27a730 | 744 | s = &dev->subdevices[1]; |
adbd1741 HS |
745 | s->type = COMEDI_SUBD_DO; |
746 | s->subdev_flags = SDF_WRITEABLE; | |
747 | s->n_chan = 0; | |
748 | s->maxdata = 1; | |
749 | s->range_table = &range_digital; | |
750 | s->insn_write = serial2002_do_insn_write; | |
578c0183 AB |
751 | |
752 | /* analog input subdevice */ | |
8e27a730 | 753 | s = &dev->subdevices[2]; |
adbd1741 HS |
754 | s->type = COMEDI_SUBD_AI; |
755 | s->subdev_flags = SDF_READABLE | SDF_GROUND; | |
756 | s->n_chan = 0; | |
757 | s->maxdata = 1; | |
758 | s->range_table = NULL; | |
759 | s->insn_read = serial2002_ai_insn_read; | |
578c0183 AB |
760 | |
761 | /* analog output subdevice */ | |
8e27a730 | 762 | s = &dev->subdevices[3]; |
adbd1741 HS |
763 | s->type = COMEDI_SUBD_AO; |
764 | s->subdev_flags = SDF_WRITEABLE; | |
765 | s->n_chan = 0; | |
766 | s->maxdata = 1; | |
767 | s->range_table = NULL; | |
768 | s->insn_write = serial2002_ao_insn_write; | |
769 | s->insn_read = serial2002_ao_insn_read; | |
578c0183 AB |
770 | |
771 | /* encoder input subdevice */ | |
8e27a730 | 772 | s = &dev->subdevices[4]; |
adbd1741 HS |
773 | s->type = COMEDI_SUBD_COUNTER; |
774 | s->subdev_flags = SDF_READABLE | SDF_LSAMPL; | |
775 | s->n_chan = 0; | |
776 | s->maxdata = 1; | |
777 | s->range_table = NULL; | |
778 | s->insn_read = serial2002_encoder_insn_read; | |
578c0183 | 779 | |
a058be68 HS |
780 | dev->open = serial2002_open; |
781 | dev->close = serial2002_close; | |
e7ccc452 | 782 | |
81c01c3f | 783 | return 0; |
578c0183 AB |
784 | } |
785 | ||
484ecc95 | 786 | static void serial2002_detach(struct comedi_device *dev) |
578c0183 | 787 | { |
34c43922 | 788 | struct comedi_subdevice *s; |
578c0183 AB |
789 | int i; |
790 | ||
fd47579b | 791 | for (i = 0; i < dev->n_subdevices; i++) { |
578c0183 | 792 | s = &dev->subdevices[i]; |
e4e1f289 IM |
793 | kfree(s->maxdata_list); |
794 | kfree(s->range_table_list); | |
578c0183 | 795 | } |
578c0183 AB |
796 | } |
797 | ||
294f930d | 798 | static struct comedi_driver serial2002_driver = { |
cb1648b4 HS |
799 | .driver_name = "serial2002", |
800 | .module = THIS_MODULE, | |
801 | .attach = serial2002_attach, | |
802 | .detach = serial2002_detach, | |
cb1648b4 | 803 | }; |
294f930d | 804 | module_comedi_driver(serial2002_driver); |
90f703d3 AT |
805 | |
806 | MODULE_AUTHOR("Comedi http://www.comedi.org"); | |
807 | MODULE_DESCRIPTION("Comedi low-level driver"); | |
808 | MODULE_LICENSE("GPL"); |