1 | // SPDX-License-Identifier: GPL-2.0+ |
2 | /* |
3 | * comedi/drivers/ni_usb6501.c |
4 | * Comedi driver for National Instruments USB-6501 |
5 | * |
6 | * COMEDI - Linux Control and Measurement Device Interface |
7 | * Copyright (C) 2014 Luca Ellero <luca.ellero@brickedbrain.com> |
8 | */ |
9 | |
10 | /* |
11 | * Driver: ni_usb6501 |
12 | * Description: National Instruments USB-6501 module |
13 | * Devices: [National Instruments] USB-6501 (ni_usb6501) |
14 | * Author: Luca Ellero <luca.ellero@brickedbrain.com> |
15 | * Updated: 8 Sep 2014 |
16 | * Status: works |
17 | * |
18 | * |
19 | * Configuration Options: |
20 | * none |
21 | */ |
22 | |
23 | /* |
24 | * NI-6501 - USB PROTOCOL DESCRIPTION |
25 | * |
26 | * Every command is composed by two USB packets: |
27 | * - request (out) |
28 | * - response (in) |
29 | * |
30 | * Every packet is at least 12 bytes long, here is the meaning of |
31 | * every field (all values are hex): |
32 | * |
33 | * byte 0 is always 00 |
34 | * byte 1 is always 01 |
35 | * byte 2 is always 00 |
36 | * byte 3 is the total packet length |
37 | * |
38 | * byte 4 is always 00 |
39 | * byte 5 is the total packet length - 4 |
40 | * byte 6 is always 01 |
41 | * byte 7 is the command |
42 | * |
43 | * byte 8 is 02 (request) or 00 (response) |
44 | * byte 9 is 00 (response) or 10 (port request) or 20 (counter request) |
45 | * byte 10 is always 00 |
46 | * byte 11 is 00 (request) or 02 (response) |
47 | * |
48 | * PORT PACKETS |
49 | * |
50 | * CMD: 0xE READ_PORT |
51 | * REQ: 00 01 00 10 00 0C 01 0E 02 10 00 00 00 03 <PORT> 00 |
52 | * RES: 00 01 00 10 00 0C 01 00 00 00 00 02 00 03 <BMAP> 00 |
53 | * |
54 | * CMD: 0xF WRITE_PORT |
55 | * REQ: 00 01 00 14 00 10 01 0F 02 10 00 00 00 03 <PORT> 00 03 <BMAP> 00 00 |
56 | * RES: 00 01 00 0C 00 08 01 00 00 00 00 02 |
57 | * |
58 | * CMD: 0x12 SET_PORT_DIR (0 = input, 1 = output) |
59 | * REQ: 00 01 00 18 00 14 01 12 02 10 00 00 |
60 | * 00 05 <PORT 0> <PORT 1> <PORT 2> 00 05 00 00 00 00 00 |
61 | * RES: 00 01 00 0C 00 08 01 00 00 00 00 02 |
62 | * |
63 | * COUNTER PACKETS |
64 | * |
65 | * CMD 0x9: START_COUNTER |
66 | * REQ: 00 01 00 0C 00 08 01 09 02 20 00 00 |
67 | * RES: 00 01 00 0C 00 08 01 00 00 00 00 02 |
68 | * |
69 | * CMD 0xC: STOP_COUNTER |
70 | * REQ: 00 01 00 0C 00 08 01 0C 02 20 00 00 |
71 | * RES: 00 01 00 0C 00 08 01 00 00 00 00 02 |
72 | * |
73 | * CMD 0xE: READ_COUNTER |
74 | * REQ: 00 01 00 0C 00 08 01 0E 02 20 00 00 |
75 | * RES: 00 01 00 10 00 0C 01 00 00 00 00 02 <u32 counter value, Big Endian> |
76 | * |
77 | * CMD 0xF: WRITE_COUNTER |
78 | * REQ: 00 01 00 10 00 0C 01 0F 02 20 00 00 <u32 counter value, Big Endian> |
79 | * RES: 00 01 00 0C 00 08 01 00 00 00 00 02 |
80 | * |
81 | * |
82 | * Please visit https://www.brickedbrain.com if you need |
83 | * additional information or have any questions. |
84 | * |
85 | */ |
86 | |
87 | #include <linux/kernel.h> |
88 | #include <linux/module.h> |
89 | #include <linux/slab.h> |
90 | #include <linux/comedi/comedi_usb.h> |
91 | |
92 | #define NI6501_TIMEOUT 1000 |
93 | |
94 | /* Port request packets */ |
95 | static const u8 READ_PORT_REQUEST[] = {0x00, 0x01, 0x00, 0x10, |
96 | 0x00, 0x0C, 0x01, 0x0E, |
97 | 0x02, 0x10, 0x00, 0x00, |
98 | 0x00, 0x03, 0x00, 0x00}; |
99 | |
100 | static const u8 WRITE_PORT_REQUEST[] = {0x00, 0x01, 0x00, 0x14, |
101 | 0x00, 0x10, 0x01, 0x0F, |
102 | 0x02, 0x10, 0x00, 0x00, |
103 | 0x00, 0x03, 0x00, 0x00, |
104 | 0x03, 0x00, 0x00, 0x00}; |
105 | |
106 | static const u8 SET_PORT_DIR_REQUEST[] = {0x00, 0x01, 0x00, 0x18, |
107 | 0x00, 0x14, 0x01, 0x12, |
108 | 0x02, 0x10, 0x00, 0x00, |
109 | 0x00, 0x05, 0x00, 0x00, |
110 | 0x00, 0x00, 0x05, 0x00, |
111 | 0x00, 0x00, 0x00, 0x00}; |
112 | |
113 | /* Counter request packets */ |
114 | static const u8 START_COUNTER_REQUEST[] = {0x00, 0x01, 0x00, 0x0C, |
115 | 0x00, 0x08, 0x01, 0x09, |
116 | 0x02, 0x20, 0x00, 0x00}; |
117 | |
118 | static const u8 STOP_COUNTER_REQUEST[] = {0x00, 0x01, 0x00, 0x0C, |
119 | 0x00, 0x08, 0x01, 0x0C, |
120 | 0x02, 0x20, 0x00, 0x00}; |
121 | |
122 | static const u8 READ_COUNTER_REQUEST[] = {0x00, 0x01, 0x00, 0x0C, |
123 | 0x00, 0x08, 0x01, 0x0E, |
124 | 0x02, 0x20, 0x00, 0x00}; |
125 | |
126 | static const u8 WRITE_COUNTER_REQUEST[] = {0x00, 0x01, 0x00, 0x10, |
127 | 0x00, 0x0C, 0x01, 0x0F, |
128 | 0x02, 0x20, 0x00, 0x00, |
129 | 0x00, 0x00, 0x00, 0x00}; |
130 | |
131 | /* Response packets */ |
132 | static const u8 GENERIC_RESPONSE[] = {0x00, 0x01, 0x00, 0x0C, |
133 | 0x00, 0x08, 0x01, 0x00, |
134 | 0x00, 0x00, 0x00, 0x02}; |
135 | |
136 | static const u8 READ_PORT_RESPONSE[] = {0x00, 0x01, 0x00, 0x10, |
137 | 0x00, 0x0C, 0x01, 0x00, |
138 | 0x00, 0x00, 0x00, 0x02, |
139 | 0x00, 0x03, 0x00, 0x00}; |
140 | |
141 | static const u8 READ_COUNTER_RESPONSE[] = {0x00, 0x01, 0x00, 0x10, |
142 | 0x00, 0x0C, 0x01, 0x00, |
143 | 0x00, 0x00, 0x00, 0x02, |
144 | 0x00, 0x00, 0x00, 0x00}; |
145 | |
146 | /* Largest supported packets */ |
147 | static const size_t TX_MAX_SIZE = sizeof(SET_PORT_DIR_REQUEST); |
148 | static const size_t RX_MAX_SIZE = sizeof(READ_PORT_RESPONSE); |
149 | |
150 | enum commands { |
151 | READ_PORT, |
152 | WRITE_PORT, |
153 | SET_PORT_DIR, |
154 | START_COUNTER, |
155 | STOP_COUNTER, |
156 | READ_COUNTER, |
157 | WRITE_COUNTER |
158 | }; |
159 | |
160 | struct ni6501_private { |
161 | struct usb_endpoint_descriptor *ep_rx; |
162 | struct usb_endpoint_descriptor *ep_tx; |
163 | struct mutex mut; |
164 | u8 *usb_rx_buf; |
165 | u8 *usb_tx_buf; |
166 | }; |
167 | |
168 | static int ni6501_port_command(struct comedi_device *dev, int command, |
169 | unsigned int val, u8 *bitmap) |
170 | { |
171 | struct usb_device *usb = comedi_to_usb_dev(dev); |
172 | struct ni6501_private *devpriv = dev->private; |
173 | int request_size, response_size; |
174 | u8 *tx = devpriv->usb_tx_buf; |
175 | int ret; |
176 | |
177 | if (command != SET_PORT_DIR && !bitmap) |
178 | return -EINVAL; |
179 | |
180 | mutex_lock(&devpriv->mut); |
181 | |
182 | switch (command) { |
183 | case READ_PORT: |
184 | request_size = sizeof(READ_PORT_REQUEST); |
185 | response_size = sizeof(READ_PORT_RESPONSE); |
186 | memcpy(tx, READ_PORT_REQUEST, request_size); |
187 | tx[14] = val & 0xff; |
188 | break; |
189 | case WRITE_PORT: |
190 | request_size = sizeof(WRITE_PORT_REQUEST); |
191 | response_size = sizeof(GENERIC_RESPONSE); |
192 | memcpy(tx, WRITE_PORT_REQUEST, request_size); |
193 | tx[14] = val & 0xff; |
194 | tx[17] = *bitmap; |
195 | break; |
196 | case SET_PORT_DIR: |
197 | request_size = sizeof(SET_PORT_DIR_REQUEST); |
198 | response_size = sizeof(GENERIC_RESPONSE); |
199 | memcpy(tx, SET_PORT_DIR_REQUEST, request_size); |
200 | tx[14] = val & 0xff; |
201 | tx[15] = (val >> 8) & 0xff; |
202 | tx[16] = (val >> 16) & 0xff; |
203 | break; |
204 | default: |
205 | ret = -EINVAL; |
206 | goto end; |
207 | } |
208 | |
209 | ret = usb_bulk_msg(usb_dev: usb, |
210 | usb_sndbulkpipe(usb, |
211 | devpriv->ep_tx->bEndpointAddress), |
212 | data: devpriv->usb_tx_buf, |
213 | len: request_size, |
214 | NULL, |
215 | NI6501_TIMEOUT); |
216 | if (ret) |
217 | goto end; |
218 | |
219 | ret = usb_bulk_msg(usb_dev: usb, |
220 | usb_rcvbulkpipe(usb, |
221 | devpriv->ep_rx->bEndpointAddress), |
222 | data: devpriv->usb_rx_buf, |
223 | len: response_size, |
224 | NULL, |
225 | NI6501_TIMEOUT); |
226 | if (ret) |
227 | goto end; |
228 | |
229 | /* Check if results are valid */ |
230 | |
231 | if (command == READ_PORT) { |
232 | *bitmap = devpriv->usb_rx_buf[14]; |
233 | /* mask bitmap for comparing */ |
234 | devpriv->usb_rx_buf[14] = 0x00; |
235 | |
236 | if (memcmp(p: devpriv->usb_rx_buf, q: READ_PORT_RESPONSE, |
237 | size: sizeof(READ_PORT_RESPONSE))) { |
238 | ret = -EINVAL; |
239 | } |
240 | } else if (memcmp(p: devpriv->usb_rx_buf, q: GENERIC_RESPONSE, |
241 | size: sizeof(GENERIC_RESPONSE))) { |
242 | ret = -EINVAL; |
243 | } |
244 | end: |
245 | mutex_unlock(lock: &devpriv->mut); |
246 | |
247 | return ret; |
248 | } |
249 | |
250 | static int ni6501_counter_command(struct comedi_device *dev, int command, |
251 | u32 *val) |
252 | { |
253 | struct usb_device *usb = comedi_to_usb_dev(dev); |
254 | struct ni6501_private *devpriv = dev->private; |
255 | int request_size, response_size; |
256 | u8 *tx = devpriv->usb_tx_buf; |
257 | int ret; |
258 | |
259 | if ((command == READ_COUNTER || command == WRITE_COUNTER) && !val) |
260 | return -EINVAL; |
261 | |
262 | mutex_lock(&devpriv->mut); |
263 | |
264 | switch (command) { |
265 | case START_COUNTER: |
266 | request_size = sizeof(START_COUNTER_REQUEST); |
267 | response_size = sizeof(GENERIC_RESPONSE); |
268 | memcpy(tx, START_COUNTER_REQUEST, request_size); |
269 | break; |
270 | case STOP_COUNTER: |
271 | request_size = sizeof(STOP_COUNTER_REQUEST); |
272 | response_size = sizeof(GENERIC_RESPONSE); |
273 | memcpy(tx, STOP_COUNTER_REQUEST, request_size); |
274 | break; |
275 | case READ_COUNTER: |
276 | request_size = sizeof(READ_COUNTER_REQUEST); |
277 | response_size = sizeof(READ_COUNTER_RESPONSE); |
278 | memcpy(tx, READ_COUNTER_REQUEST, request_size); |
279 | break; |
280 | case WRITE_COUNTER: |
281 | request_size = sizeof(WRITE_COUNTER_REQUEST); |
282 | response_size = sizeof(GENERIC_RESPONSE); |
283 | memcpy(tx, WRITE_COUNTER_REQUEST, request_size); |
284 | /* Setup tx packet: bytes 12,13,14,15 hold the */ |
285 | /* u32 counter value (Big Endian) */ |
286 | *((__be32 *)&tx[12]) = cpu_to_be32(*val); |
287 | break; |
288 | default: |
289 | ret = -EINVAL; |
290 | goto end; |
291 | } |
292 | |
293 | ret = usb_bulk_msg(usb_dev: usb, |
294 | usb_sndbulkpipe(usb, |
295 | devpriv->ep_tx->bEndpointAddress), |
296 | data: devpriv->usb_tx_buf, |
297 | len: request_size, |
298 | NULL, |
299 | NI6501_TIMEOUT); |
300 | if (ret) |
301 | goto end; |
302 | |
303 | ret = usb_bulk_msg(usb_dev: usb, |
304 | usb_rcvbulkpipe(usb, |
305 | devpriv->ep_rx->bEndpointAddress), |
306 | data: devpriv->usb_rx_buf, |
307 | len: response_size, |
308 | NULL, |
309 | NI6501_TIMEOUT); |
310 | if (ret) |
311 | goto end; |
312 | |
313 | /* Check if results are valid */ |
314 | |
315 | if (command == READ_COUNTER) { |
316 | int i; |
317 | |
318 | /* Read counter value: bytes 12,13,14,15 of rx packet */ |
319 | /* hold the u32 counter value (Big Endian) */ |
320 | *val = be32_to_cpu(*((__be32 *)&devpriv->usb_rx_buf[12])); |
321 | |
322 | /* mask counter value for comparing */ |
323 | for (i = 12; i < sizeof(READ_COUNTER_RESPONSE); ++i) |
324 | devpriv->usb_rx_buf[i] = 0x00; |
325 | |
326 | if (memcmp(p: devpriv->usb_rx_buf, q: READ_COUNTER_RESPONSE, |
327 | size: sizeof(READ_COUNTER_RESPONSE))) { |
328 | ret = -EINVAL; |
329 | } |
330 | } else if (memcmp(p: devpriv->usb_rx_buf, q: GENERIC_RESPONSE, |
331 | size: sizeof(GENERIC_RESPONSE))) { |
332 | ret = -EINVAL; |
333 | } |
334 | end: |
335 | mutex_unlock(lock: &devpriv->mut); |
336 | |
337 | return ret; |
338 | } |
339 | |
340 | static int ni6501_dio_insn_config(struct comedi_device *dev, |
341 | struct comedi_subdevice *s, |
342 | struct comedi_insn *insn, |
343 | unsigned int *data) |
344 | { |
345 | int ret; |
346 | |
347 | ret = comedi_dio_insn_config(dev, s, insn, data, mask: 0); |
348 | if (ret) |
349 | return ret; |
350 | |
351 | ret = ni6501_port_command(dev, command: SET_PORT_DIR, val: s->io_bits, NULL); |
352 | if (ret) |
353 | return ret; |
354 | |
355 | return insn->n; |
356 | } |
357 | |
358 | static int ni6501_dio_insn_bits(struct comedi_device *dev, |
359 | struct comedi_subdevice *s, |
360 | struct comedi_insn *insn, |
361 | unsigned int *data) |
362 | { |
363 | unsigned int mask; |
364 | int ret; |
365 | u8 port; |
366 | u8 bitmap; |
367 | |
368 | mask = comedi_dio_update_state(s, data); |
369 | |
370 | for (port = 0; port < 3; port++) { |
371 | if (mask & (0xFF << port * 8)) { |
372 | bitmap = (s->state >> port * 8) & 0xFF; |
373 | ret = ni6501_port_command(dev, command: WRITE_PORT, |
374 | val: port, bitmap: &bitmap); |
375 | if (ret) |
376 | return ret; |
377 | } |
378 | } |
379 | |
380 | data[1] = 0; |
381 | |
382 | for (port = 0; port < 3; port++) { |
383 | ret = ni6501_port_command(dev, command: READ_PORT, val: port, bitmap: &bitmap); |
384 | if (ret) |
385 | return ret; |
386 | data[1] |= bitmap << port * 8; |
387 | } |
388 | |
389 | return insn->n; |
390 | } |
391 | |
392 | static int ni6501_cnt_insn_config(struct comedi_device *dev, |
393 | struct comedi_subdevice *s, |
394 | struct comedi_insn *insn, |
395 | unsigned int *data) |
396 | { |
397 | int ret; |
398 | u32 val = 0; |
399 | |
400 | switch (data[0]) { |
401 | case INSN_CONFIG_ARM: |
402 | ret = ni6501_counter_command(dev, command: START_COUNTER, NULL); |
403 | break; |
404 | case INSN_CONFIG_DISARM: |
405 | ret = ni6501_counter_command(dev, command: STOP_COUNTER, NULL); |
406 | break; |
407 | case INSN_CONFIG_RESET: |
408 | ret = ni6501_counter_command(dev, command: STOP_COUNTER, NULL); |
409 | if (ret) |
410 | break; |
411 | ret = ni6501_counter_command(dev, command: WRITE_COUNTER, val: &val); |
412 | break; |
413 | default: |
414 | return -EINVAL; |
415 | } |
416 | |
417 | return ret ? ret : insn->n; |
418 | } |
419 | |
420 | static int ni6501_cnt_insn_read(struct comedi_device *dev, |
421 | struct comedi_subdevice *s, |
422 | struct comedi_insn *insn, |
423 | unsigned int *data) |
424 | { |
425 | int ret; |
426 | u32 val; |
427 | unsigned int i; |
428 | |
429 | for (i = 0; i < insn->n; i++) { |
430 | ret = ni6501_counter_command(dev, command: READ_COUNTER, val: &val); |
431 | if (ret) |
432 | return ret; |
433 | data[i] = val; |
434 | } |
435 | |
436 | return insn->n; |
437 | } |
438 | |
439 | static int ni6501_cnt_insn_write(struct comedi_device *dev, |
440 | struct comedi_subdevice *s, |
441 | struct comedi_insn *insn, |
442 | unsigned int *data) |
443 | { |
444 | int ret; |
445 | |
446 | if (insn->n) { |
447 | u32 val = data[insn->n - 1]; |
448 | |
449 | ret = ni6501_counter_command(dev, command: WRITE_COUNTER, val: &val); |
450 | if (ret) |
451 | return ret; |
452 | } |
453 | |
454 | return insn->n; |
455 | } |
456 | |
457 | static int ni6501_alloc_usb_buffers(struct comedi_device *dev) |
458 | { |
459 | struct ni6501_private *devpriv = dev->private; |
460 | size_t size; |
461 | |
462 | size = usb_endpoint_maxp(epd: devpriv->ep_rx); |
463 | devpriv->usb_rx_buf = kzalloc(size, GFP_KERNEL); |
464 | if (!devpriv->usb_rx_buf) |
465 | return -ENOMEM; |
466 | |
467 | size = usb_endpoint_maxp(epd: devpriv->ep_tx); |
468 | devpriv->usb_tx_buf = kzalloc(size, GFP_KERNEL); |
469 | if (!devpriv->usb_tx_buf) |
470 | return -ENOMEM; |
471 | |
472 | return 0; |
473 | } |
474 | |
475 | static int ni6501_find_endpoints(struct comedi_device *dev) |
476 | { |
477 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
478 | struct ni6501_private *devpriv = dev->private; |
479 | struct usb_host_interface *iface_desc = intf->cur_altsetting; |
480 | struct usb_endpoint_descriptor *ep_desc; |
481 | int i; |
482 | |
483 | if (iface_desc->desc.bNumEndpoints != 2) { |
484 | dev_err(dev->class_dev, "Wrong number of endpoints\n" ); |
485 | return -ENODEV; |
486 | } |
487 | |
488 | for (i = 0; i < iface_desc->desc.bNumEndpoints; i++) { |
489 | ep_desc = &iface_desc->endpoint[i].desc; |
490 | |
491 | if (usb_endpoint_is_bulk_in(epd: ep_desc)) { |
492 | if (!devpriv->ep_rx) |
493 | devpriv->ep_rx = ep_desc; |
494 | continue; |
495 | } |
496 | |
497 | if (usb_endpoint_is_bulk_out(epd: ep_desc)) { |
498 | if (!devpriv->ep_tx) |
499 | devpriv->ep_tx = ep_desc; |
500 | continue; |
501 | } |
502 | } |
503 | |
504 | if (!devpriv->ep_rx || !devpriv->ep_tx) |
505 | return -ENODEV; |
506 | |
507 | if (usb_endpoint_maxp(epd: devpriv->ep_rx) < RX_MAX_SIZE) |
508 | return -ENODEV; |
509 | |
510 | if (usb_endpoint_maxp(epd: devpriv->ep_tx) < TX_MAX_SIZE) |
511 | return -ENODEV; |
512 | |
513 | return 0; |
514 | } |
515 | |
516 | static int ni6501_auto_attach(struct comedi_device *dev, |
517 | unsigned long context) |
518 | { |
519 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
520 | struct ni6501_private *devpriv; |
521 | struct comedi_subdevice *s; |
522 | int ret; |
523 | |
524 | devpriv = comedi_alloc_devpriv(dev, size: sizeof(*devpriv)); |
525 | if (!devpriv) |
526 | return -ENOMEM; |
527 | |
528 | mutex_init(&devpriv->mut); |
529 | usb_set_intfdata(intf, data: devpriv); |
530 | |
531 | ret = ni6501_find_endpoints(dev); |
532 | if (ret) |
533 | return ret; |
534 | |
535 | ret = ni6501_alloc_usb_buffers(dev); |
536 | if (ret) |
537 | return ret; |
538 | |
539 | ret = comedi_alloc_subdevices(dev, num_subdevices: 2); |
540 | if (ret) |
541 | return ret; |
542 | |
543 | /* Digital Input/Output subdevice */ |
544 | s = &dev->subdevices[0]; |
545 | s->type = COMEDI_SUBD_DIO; |
546 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; |
547 | s->n_chan = 24; |
548 | s->maxdata = 1; |
549 | s->range_table = &range_digital; |
550 | s->insn_bits = ni6501_dio_insn_bits; |
551 | s->insn_config = ni6501_dio_insn_config; |
552 | |
553 | /* Counter subdevice */ |
554 | s = &dev->subdevices[1]; |
555 | s->type = COMEDI_SUBD_COUNTER; |
556 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE | SDF_LSAMPL; |
557 | s->n_chan = 1; |
558 | s->maxdata = 0xffffffff; |
559 | s->insn_read = ni6501_cnt_insn_read; |
560 | s->insn_write = ni6501_cnt_insn_write; |
561 | s->insn_config = ni6501_cnt_insn_config; |
562 | |
563 | return 0; |
564 | } |
565 | |
566 | static void ni6501_detach(struct comedi_device *dev) |
567 | { |
568 | struct usb_interface *intf = comedi_to_usb_interface(dev); |
569 | struct ni6501_private *devpriv = dev->private; |
570 | |
571 | if (!devpriv) |
572 | return; |
573 | |
574 | mutex_destroy(lock: &devpriv->mut); |
575 | |
576 | usb_set_intfdata(intf, NULL); |
577 | |
578 | kfree(objp: devpriv->usb_rx_buf); |
579 | kfree(objp: devpriv->usb_tx_buf); |
580 | } |
581 | |
582 | static struct comedi_driver ni6501_driver = { |
583 | .module = THIS_MODULE, |
584 | .driver_name = "ni6501" , |
585 | .auto_attach = ni6501_auto_attach, |
586 | .detach = ni6501_detach, |
587 | }; |
588 | |
589 | static int ni6501_usb_probe(struct usb_interface *intf, |
590 | const struct usb_device_id *id) |
591 | { |
592 | return comedi_usb_auto_config(intf, driver: &ni6501_driver, context: id->driver_info); |
593 | } |
594 | |
595 | static const struct usb_device_id ni6501_usb_table[] = { |
596 | { USB_DEVICE(0x3923, 0x718a) }, |
597 | { } |
598 | }; |
599 | MODULE_DEVICE_TABLE(usb, ni6501_usb_table); |
600 | |
601 | static struct usb_driver ni6501_usb_driver = { |
602 | .name = "ni6501" , |
603 | .id_table = ni6501_usb_table, |
604 | .probe = ni6501_usb_probe, |
605 | .disconnect = comedi_usb_auto_unconfig, |
606 | }; |
607 | module_comedi_usb_driver(ni6501_driver, ni6501_usb_driver); |
608 | |
609 | MODULE_AUTHOR("Luca Ellero" ); |
610 | MODULE_DESCRIPTION("Comedi driver for National Instruments USB-6501" ); |
611 | MODULE_LICENSE("GPL" ); |
612 | |