Commit | Line | Data |
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8b78607f | 1 | #define DRIVER_VERSION "v0.6" |
dd89e20d BP |
2 | #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com" |
3 | #define DRIVER_DESC "Stirling/ITL USB-DUX SIGMA -- Bernd.Porr@f2s.com" | |
4 | /* | |
5 | comedi/drivers/usbdux.c | |
6 | Copyright (C) 2011 Bernd Porr, Bernd.Porr@f2s.com | |
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 | Driver: usbduxsigma | |
25 | Description: University of Stirling USB DAQ & INCITE Technology Limited | |
26 | Devices: [ITL] USB-DUX (usbduxsigma.o) | |
27 | Author: Bernd Porr <BerndPorr@f2s.com> | |
8b78607f | 28 | Updated: 8 Nov 2011 |
dd89e20d BP |
29 | Status: testing |
30 | */ | |
31 | /* | |
32 | * I must give credit here to Chris Baugher who | |
33 | * wrote the driver for AT-MIO-16d. I used some parts of this | |
34 | * driver. I also must give credits to David Brownell | |
35 | * who supported me with the USB development. | |
36 | * | |
37 | * Note: the raw data from the A/D converter is 24 bit big endian | |
38 | * anything else is little endian to/from the dux board | |
39 | * | |
40 | * | |
41 | * Revision history: | |
3ee0206b | 42 | * 0.1: initial version |
dd89e20d BP |
43 | * 0.2: all basic functions implemented, digital I/O only for one port |
44 | * 0.3: proper vendor ID and driver name | |
45 | * 0.4: fixed D/A voltage range | |
46 | * 0.5: various bug fixes, health check at startup | |
8b78607f | 47 | * 0.6: corrected wrong input range |
dd89e20d BP |
48 | */ |
49 | ||
50 | /* generates loads of debug info */ | |
51 | /* #define NOISY_DUX_DEBUGBUG */ | |
52 | ||
53 | #include <linux/kernel.h> | |
54 | #include <linux/module.h> | |
55 | #include <linux/init.h> | |
56 | #include <linux/slab.h> | |
57 | #include <linux/input.h> | |
58 | #include <linux/usb.h> | |
59 | #include <linux/fcntl.h> | |
60 | #include <linux/compiler.h> | |
61 | #include <linux/firmware.h> | |
62 | #include "comedi_fc.h" | |
63 | #include "../comedidev.h" | |
64 | ||
65 | #define BOARDNAME "usbduxsigma" | |
66 | ||
67 | /* timeout for the USB-transfer in ms*/ | |
68 | #define BULK_TIMEOUT 1000 | |
69 | ||
70 | /* constants for "firmware" upload and download */ | |
71 | #define USBDUXSUB_FIRMWARE 0xA0 | |
72 | #define VENDOR_DIR_IN 0xC0 | |
73 | #define VENDOR_DIR_OUT 0x40 | |
74 | ||
75 | /* internal addresses of the 8051 processor */ | |
76 | #define USBDUXSUB_CPUCS 0xE600 | |
77 | ||
78 | /* | |
79 | * the minor device number, major is 180 only for debugging purposes and to | |
80 | * upload special firmware (programming the eeprom etc) which is not | |
81 | * compatible with the comedi framwork | |
82 | */ | |
83 | #define USBDUXSUB_MINOR 32 | |
84 | ||
85 | /* max lenghth of the transfer-buffer for software upload */ | |
86 | #define TB_LEN 0x2000 | |
87 | ||
88 | /* Input endpoint number: ISO/IRQ */ | |
89 | #define ISOINEP 6 | |
90 | ||
91 | /* Output endpoint number: ISO/IRQ */ | |
92 | #define ISOOUTEP 2 | |
93 | ||
94 | /* This EP sends DUX commands to USBDUX */ | |
95 | #define COMMAND_OUT_EP 1 | |
96 | ||
97 | /* This EP receives the DUX commands from USBDUX */ | |
98 | #define COMMAND_IN_EP 8 | |
99 | ||
100 | /* Output endpoint for PWM */ | |
101 | #define PWM_EP 4 | |
102 | ||
103 | /* 300Hz max frequ under PWM */ | |
104 | #define MIN_PWM_PERIOD ((long)(1E9/300)) | |
105 | ||
106 | /* Default PWM frequency */ | |
107 | #define PWM_DEFAULT_PERIOD ((long)(1E9/100)) | |
108 | ||
109 | /* Number of channels (16 AD and offset)*/ | |
110 | #define NUMCHANNELS 16 | |
111 | ||
112 | /* Size of one A/D value */ | |
113 | #define SIZEADIN ((sizeof(int32_t))) | |
114 | ||
115 | /* | |
116 | * Size of the async input-buffer IN BYTES, the DIO state is transmitted | |
117 | * as the first byte. | |
118 | */ | |
119 | #define SIZEINBUF (((NUMCHANNELS+1)*SIZEADIN)) | |
120 | ||
121 | /* 16 bytes. */ | |
122 | #define SIZEINSNBUF 16 | |
123 | ||
124 | /* Number of DA channels */ | |
125 | #define NUMOUTCHANNELS 8 | |
126 | ||
127 | /* size of one value for the D/A converter: channel and value */ | |
128 | #define SIZEDAOUT ((sizeof(uint8_t)+sizeof(int16_t))) | |
129 | ||
130 | /* | |
131 | * Size of the output-buffer in bytes | |
132 | * Actually only the first 4 triplets are used but for the | |
133 | * high speed mode we need to pad it to 8 (microframes). | |
134 | */ | |
135 | #define SIZEOUTBUF ((8*SIZEDAOUT)) | |
136 | ||
137 | /* | |
138 | * Size of the buffer for the dux commands: just now max size is determined | |
139 | * by the analogue out + command byte + panic bytes... | |
140 | */ | |
141 | #define SIZEOFDUXBUFFER ((8*SIZEDAOUT+2)) | |
142 | ||
143 | /* Number of in-URBs which receive the data: min=2 */ | |
144 | #define NUMOFINBUFFERSFULL 5 | |
145 | ||
146 | /* Number of out-URBs which send the data: min=2 */ | |
147 | #define NUMOFOUTBUFFERSFULL 5 | |
148 | ||
149 | /* Number of in-URBs which receive the data: min=5 */ | |
150 | /* must have more buffers due to buggy USB ctr */ | |
151 | #define NUMOFINBUFFERSHIGH 10 | |
152 | ||
153 | /* Number of out-URBs which send the data: min=5 */ | |
154 | /* must have more buffers due to buggy USB ctr */ | |
155 | #define NUMOFOUTBUFFERSHIGH 10 | |
156 | ||
157 | /* Total number of usbdux devices */ | |
158 | #define NUMUSBDUX 16 | |
159 | ||
160 | /* Analogue in subdevice */ | |
161 | #define SUBDEV_AD 0 | |
162 | ||
163 | /* Analogue out subdevice */ | |
164 | #define SUBDEV_DA 1 | |
165 | ||
166 | /* Digital I/O */ | |
167 | #define SUBDEV_DIO 2 | |
168 | ||
169 | /* timer aka pwm output */ | |
170 | #define SUBDEV_PWM 3 | |
171 | ||
172 | /* number of retries to get the right dux command */ | |
173 | #define RETRIES 10 | |
174 | ||
175 | /**************************************************/ | |
176 | /* comedi constants */ | |
177 | static const struct comedi_lrange range_usbdux_ai_range = { 1, { | |
178 | BIP_RANGE | |
8b78607f | 179 | (2.65/2.0) |
dd89e20d BP |
180 | } |
181 | }; | |
182 | ||
183 | static const struct comedi_lrange range_usbdux_ao_range = { 1, { | |
184 | UNI_RANGE | |
185 | (2.5), | |
186 | } | |
187 | }; | |
188 | ||
189 | /* | |
190 | * private structure of one subdevice | |
191 | */ | |
192 | ||
193 | /* | |
194 | * This is the structure which holds all the data of | |
195 | * this driver one sub device just now: A/D | |
196 | */ | |
197 | struct usbduxsub { | |
198 | /* attached? */ | |
199 | int attached; | |
200 | /* is it associated with a subdevice? */ | |
201 | int probed; | |
202 | /* pointer to the usb-device */ | |
203 | struct usb_device *usbdev; | |
204 | /* actual number of in-buffers */ | |
205 | int numOfInBuffers; | |
206 | /* actual number of out-buffers */ | |
207 | int numOfOutBuffers; | |
208 | /* ISO-transfer handling: buffers */ | |
209 | struct urb **urbIn; | |
210 | struct urb **urbOut; | |
211 | /* pwm-transfer handling */ | |
212 | struct urb *urbPwm; | |
213 | /* PWM period */ | |
214 | unsigned int pwmPeriod; | |
215 | /* PWM internal delay for the GPIF in the FX2 */ | |
216 | uint8_t pwmDelay; | |
217 | /* size of the PWM buffer which holds the bit pattern */ | |
218 | int sizePwmBuf; | |
219 | /* input buffer for the ISO-transfer */ | |
220 | int32_t *inBuffer; | |
221 | /* input buffer for single insn */ | |
222 | int8_t *insnBuffer; | |
223 | /* output buffer for single DA outputs */ | |
224 | int16_t *outBuffer; | |
225 | /* interface number */ | |
226 | int ifnum; | |
227 | /* interface structure in 2.6 */ | |
228 | struct usb_interface *interface; | |
229 | /* comedi device for the interrupt context */ | |
230 | struct comedi_device *comedidev; | |
231 | /* is it USB_SPEED_HIGH or not? */ | |
232 | short int high_speed; | |
233 | /* asynchronous command is running */ | |
234 | short int ai_cmd_running; | |
235 | short int ao_cmd_running; | |
236 | /* pwm is running */ | |
237 | short int pwm_cmd_running; | |
3ee0206b AG |
238 | /* continuous acquisition */ |
239 | short int ai_continuous; | |
240 | short int ao_continuous; | |
dd89e20d BP |
241 | /* number of samples to acquire */ |
242 | int ai_sample_count; | |
243 | int ao_sample_count; | |
244 | /* time between samples in units of the timer */ | |
245 | unsigned int ai_timer; | |
246 | unsigned int ao_timer; | |
3ee0206b | 247 | /* counter between acquisitions */ |
dd89e20d BP |
248 | unsigned int ai_counter; |
249 | unsigned int ao_counter; | |
250 | /* interval in frames/uframes */ | |
251 | unsigned int ai_interval; | |
252 | /* D/A commands */ | |
253 | uint8_t *dac_commands; | |
254 | /* commands */ | |
255 | uint8_t *dux_commands; | |
256 | struct semaphore sem; | |
257 | }; | |
258 | ||
259 | /* | |
260 | * The pointer to the private usb-data of the driver is also the private data | |
261 | * for the comedi-device. This has to be global as the usb subsystem needs | |
262 | * global variables. The other reason is that this structure must be there | |
263 | * _before_ any comedi command is issued. The usb subsystem must be initialised | |
264 | * before comedi can access it. | |
265 | */ | |
266 | static struct usbduxsub usbduxsub[NUMUSBDUX]; | |
267 | ||
268 | static DEFINE_SEMAPHORE(start_stop_sem); | |
269 | ||
270 | /* | |
271 | * Stops the data acquision | |
272 | * It should be safe to call this function from any context | |
273 | */ | |
274 | static int usbduxsub_unlink_InURBs(struct usbduxsub *usbduxsub_tmp) | |
275 | { | |
276 | int i = 0; | |
277 | int err = 0; | |
278 | ||
279 | if (usbduxsub_tmp && usbduxsub_tmp->urbIn) { | |
280 | for (i = 0; i < usbduxsub_tmp->numOfInBuffers; i++) { | |
281 | if (usbduxsub_tmp->urbIn[i]) { | |
282 | /* We wait here until all transfers have been | |
283 | * cancelled. */ | |
284 | usb_kill_urb(usbduxsub_tmp->urbIn[i]); | |
285 | } | |
286 | dev_dbg(&usbduxsub_tmp->interface->dev, | |
287 | "comedi: usbdux: unlinked InURB %d, err=%d\n", | |
288 | i, err); | |
289 | } | |
290 | } | |
291 | return err; | |
292 | } | |
293 | ||
294 | /* | |
295 | * This will stop a running acquisition operation | |
296 | * Is called from within this driver from both the | |
297 | * interrupt context and from comedi | |
298 | */ | |
299 | static int usbdux_ai_stop(struct usbduxsub *this_usbduxsub, int do_unlink) | |
300 | { | |
301 | int ret = 0; | |
302 | ||
303 | if (!this_usbduxsub) { | |
304 | pr_err("comedi?: usbdux_ai_stop: this_usbduxsub=NULL!\n"); | |
305 | return -EFAULT; | |
306 | } | |
307 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_stop\n"); | |
308 | ||
309 | if (do_unlink) { | |
310 | /* stop aquistion */ | |
311 | ret = usbduxsub_unlink_InURBs(this_usbduxsub); | |
312 | } | |
313 | ||
314 | this_usbduxsub->ai_cmd_running = 0; | |
315 | ||
316 | return ret; | |
317 | } | |
318 | ||
319 | /* | |
320 | * This will cancel a running acquisition operation. | |
321 | * This is called by comedi but never from inside the driver. | |
322 | */ | |
323 | static int usbdux_ai_cancel(struct comedi_device *dev, | |
324 | struct comedi_subdevice *s) | |
325 | { | |
326 | struct usbduxsub *this_usbduxsub; | |
327 | int res = 0; | |
328 | ||
329 | /* force unlink of all urbs */ | |
330 | this_usbduxsub = dev->private; | |
331 | if (!this_usbduxsub) | |
332 | return -EFAULT; | |
333 | ||
334 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_cancel\n"); | |
335 | ||
336 | /* prevent other CPUs from submitting new commands just now */ | |
337 | down(&this_usbduxsub->sem); | |
338 | if (!(this_usbduxsub->probed)) { | |
339 | up(&this_usbduxsub->sem); | |
340 | return -ENODEV; | |
341 | } | |
342 | /* unlink only if the urb really has been submitted */ | |
343 | res = usbdux_ai_stop(this_usbduxsub, this_usbduxsub->ai_cmd_running); | |
344 | up(&this_usbduxsub->sem); | |
345 | return res; | |
346 | } | |
347 | ||
348 | /* analogue IN - interrupt service routine */ | |
349 | static void usbduxsub_ai_IsocIrq(struct urb *urb) | |
350 | { | |
351 | int i, err, n; | |
352 | struct usbduxsub *this_usbduxsub; | |
353 | struct comedi_device *this_comedidev; | |
354 | struct comedi_subdevice *s; | |
355 | int32_t v; | |
356 | unsigned int dio_state; | |
357 | ||
358 | /* the context variable points to the comedi device */ | |
359 | this_comedidev = urb->context; | |
360 | /* the private structure of the subdevice is struct usbduxsub */ | |
361 | this_usbduxsub = this_comedidev->private; | |
362 | /* subdevice which is the AD converter */ | |
363 | s = this_comedidev->subdevices + SUBDEV_AD; | |
364 | ||
365 | /* first we test if something unusual has just happened */ | |
366 | switch (urb->status) { | |
367 | case 0: | |
368 | /* copy the result in the transfer buffer */ | |
369 | memcpy(this_usbduxsub->inBuffer, | |
370 | urb->transfer_buffer, SIZEINBUF); | |
371 | break; | |
372 | case -EILSEQ: | |
373 | /* error in the ISOchronous data */ | |
374 | /* we don't copy the data into the transfer buffer */ | |
375 | /* and recycle the last data byte */ | |
376 | dev_dbg(&urb->dev->dev, | |
377 | "comedi%d: usbdux: CRC error in ISO IN stream.\n", | |
378 | this_usbduxsub->comedidev->minor); | |
379 | ||
380 | break; | |
381 | ||
382 | case -ECONNRESET: | |
383 | case -ENOENT: | |
384 | case -ESHUTDOWN: | |
385 | case -ECONNABORTED: | |
386 | /* happens after an unlink command */ | |
387 | if (this_usbduxsub->ai_cmd_running) { | |
388 | /* we are still running a command */ | |
389 | /* tell this comedi */ | |
390 | s->async->events |= COMEDI_CB_EOA; | |
391 | s->async->events |= COMEDI_CB_ERROR; | |
392 | comedi_event(this_usbduxsub->comedidev, s); | |
393 | /* stop the transfer w/o unlink */ | |
394 | usbdux_ai_stop(this_usbduxsub, 0); | |
395 | } | |
396 | return; | |
397 | ||
398 | default: | |
399 | /* a real error on the bus */ | |
400 | /* pass error to comedi if we are really running a command */ | |
401 | if (this_usbduxsub->ai_cmd_running) { | |
402 | dev_err(&urb->dev->dev, | |
403 | "Non-zero urb status received in ai intr " | |
404 | "context: %d\n", urb->status); | |
405 | s->async->events |= COMEDI_CB_EOA; | |
406 | s->async->events |= COMEDI_CB_ERROR; | |
407 | comedi_event(this_usbduxsub->comedidev, s); | |
408 | /* don't do an unlink here */ | |
409 | usbdux_ai_stop(this_usbduxsub, 0); | |
410 | } | |
411 | return; | |
412 | } | |
413 | ||
414 | /* | |
415 | * at this point we are reasonably sure that nothing dodgy has happened | |
416 | * are we running a command? | |
417 | */ | |
418 | if (unlikely((!(this_usbduxsub->ai_cmd_running)))) { | |
419 | /* | |
420 | * not running a command, do not continue execution if no | |
421 | * asynchronous command is running in particular not resubmit | |
422 | */ | |
423 | return; | |
424 | } | |
425 | ||
426 | urb->dev = this_usbduxsub->usbdev; | |
427 | ||
428 | /* resubmit the urb */ | |
429 | err = usb_submit_urb(urb, GFP_ATOMIC); | |
430 | if (unlikely(err < 0)) { | |
431 | dev_err(&urb->dev->dev, | |
432 | "comedi_: urb resubmit failed in int-context!" | |
433 | "err=%d\n", | |
434 | err); | |
435 | if (err == -EL2NSYNC) | |
436 | dev_err(&urb->dev->dev, | |
437 | "buggy USB host controller or bug in IRQ " | |
438 | "handler!\n"); | |
439 | s->async->events |= COMEDI_CB_EOA; | |
440 | s->async->events |= COMEDI_CB_ERROR; | |
441 | comedi_event(this_usbduxsub->comedidev, s); | |
442 | /* don't do an unlink here */ | |
443 | usbdux_ai_stop(this_usbduxsub, 0); | |
444 | return; | |
445 | } | |
446 | ||
447 | /* get the state of the dio pins to allow external trigger */ | |
448 | dio_state = be32_to_cpu(this_usbduxsub->inBuffer[0]); | |
449 | ||
450 | this_usbduxsub->ai_counter--; | |
451 | if (likely(this_usbduxsub->ai_counter > 0)) | |
452 | return; | |
453 | ||
454 | /* timer zero, transfer measurements to comedi */ | |
455 | this_usbduxsub->ai_counter = this_usbduxsub->ai_timer; | |
456 | ||
457 | /* test, if we transmit only a fixed number of samples */ | |
3ee0206b AG |
458 | if (!(this_usbduxsub->ai_continuous)) { |
459 | /* not continuous, fixed number of samples */ | |
dd89e20d BP |
460 | this_usbduxsub->ai_sample_count--; |
461 | /* all samples received? */ | |
462 | if (this_usbduxsub->ai_sample_count < 0) { | |
463 | /* prevent a resubmit next time */ | |
464 | usbdux_ai_stop(this_usbduxsub, 0); | |
465 | /* say comedi that the acquistion is over */ | |
466 | s->async->events |= COMEDI_CB_EOA; | |
467 | comedi_event(this_usbduxsub->comedidev, s); | |
468 | return; | |
469 | } | |
470 | } | |
471 | /* get the data from the USB bus and hand it over to comedi */ | |
472 | n = s->async->cmd.chanlist_len; | |
473 | for (i = 0; i < n; i++) { | |
474 | /* transfer data, note first byte is the DIO state */ | |
475 | v = be32_to_cpu(this_usbduxsub->inBuffer[i+1]); | |
476 | /* strip status byte */ | |
477 | v = v & 0x00ffffff; | |
478 | /* convert to unsigned */ | |
479 | v = v ^ 0x00800000; | |
480 | /* write the byte to the buffer */ | |
481 | err = cfc_write_array_to_buffer(s, &v, sizeof(uint32_t)); | |
482 | if (unlikely(err == 0)) { | |
483 | /* buffer overflow */ | |
484 | usbdux_ai_stop(this_usbduxsub, 0); | |
485 | return; | |
486 | } | |
487 | } | |
488 | /* tell comedi that data is there */ | |
489 | s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS; | |
490 | comedi_event(this_usbduxsub->comedidev, s); | |
491 | } | |
492 | ||
493 | static int usbduxsub_unlink_OutURBs(struct usbduxsub *usbduxsub_tmp) | |
494 | { | |
495 | int i = 0; | |
496 | int err = 0; | |
497 | ||
498 | if (usbduxsub_tmp && usbduxsub_tmp->urbOut) { | |
499 | for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) { | |
500 | if (usbduxsub_tmp->urbOut[i]) | |
501 | usb_kill_urb(usbduxsub_tmp->urbOut[i]); | |
502 | ||
503 | dev_dbg(&usbduxsub_tmp->interface->dev, | |
504 | "comedi: usbdux: unlinked OutURB %d: res=%d\n", | |
505 | i, err); | |
506 | } | |
507 | } | |
508 | return err; | |
509 | } | |
510 | ||
511 | /* This will cancel a running acquisition operation | |
512 | * in any context. | |
513 | */ | |
514 | static int usbdux_ao_stop(struct usbduxsub *this_usbduxsub, int do_unlink) | |
515 | { | |
516 | int ret = 0; | |
517 | ||
518 | if (!this_usbduxsub) | |
519 | return -EFAULT; | |
520 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ao_cancel\n"); | |
521 | ||
522 | if (do_unlink) | |
523 | ret = usbduxsub_unlink_OutURBs(this_usbduxsub); | |
524 | ||
525 | this_usbduxsub->ao_cmd_running = 0; | |
526 | ||
527 | return ret; | |
528 | } | |
529 | ||
530 | /* force unlink, is called by comedi */ | |
531 | static int usbdux_ao_cancel(struct comedi_device *dev, | |
532 | struct comedi_subdevice *s) | |
533 | { | |
534 | struct usbduxsub *this_usbduxsub = dev->private; | |
535 | int res = 0; | |
536 | ||
537 | if (!this_usbduxsub) | |
538 | return -EFAULT; | |
539 | ||
540 | /* prevent other CPUs from submitting a command just now */ | |
541 | down(&this_usbduxsub->sem); | |
542 | if (!(this_usbduxsub->probed)) { | |
543 | up(&this_usbduxsub->sem); | |
544 | return -ENODEV; | |
545 | } | |
546 | /* unlink only if it is really running */ | |
547 | res = usbdux_ao_stop(this_usbduxsub, this_usbduxsub->ao_cmd_running); | |
548 | up(&this_usbduxsub->sem); | |
549 | return res; | |
550 | } | |
551 | ||
552 | static void usbduxsub_ao_IsocIrq(struct urb *urb) | |
553 | { | |
554 | int i, ret; | |
555 | uint8_t *datap; | |
556 | struct usbduxsub *this_usbduxsub; | |
557 | struct comedi_device *this_comedidev; | |
558 | struct comedi_subdevice *s; | |
559 | ||
560 | /* the context variable points to the subdevice */ | |
561 | this_comedidev = urb->context; | |
562 | /* the private structure of the subdevice is struct usbduxsub */ | |
563 | this_usbduxsub = this_comedidev->private; | |
564 | ||
565 | s = this_comedidev->subdevices + SUBDEV_DA; | |
566 | ||
567 | switch (urb->status) { | |
568 | case 0: | |
569 | /* success */ | |
570 | break; | |
571 | ||
572 | case -ECONNRESET: | |
573 | case -ENOENT: | |
574 | case -ESHUTDOWN: | |
575 | case -ECONNABORTED: | |
576 | /* after an unlink command, unplug, ... etc */ | |
577 | /* no unlink needed here. Already shutting down. */ | |
578 | if (this_usbduxsub->ao_cmd_running) { | |
579 | s->async->events |= COMEDI_CB_EOA; | |
580 | comedi_event(this_usbduxsub->comedidev, s); | |
581 | usbdux_ao_stop(this_usbduxsub, 0); | |
582 | } | |
583 | return; | |
584 | ||
585 | default: | |
586 | /* a real error */ | |
587 | if (this_usbduxsub->ao_cmd_running) { | |
588 | dev_err(&urb->dev->dev, | |
589 | "comedi_: Non-zero urb status received in ao " | |
590 | "intr context: %d\n", urb->status); | |
591 | s->async->events |= COMEDI_CB_ERROR; | |
592 | s->async->events |= COMEDI_CB_EOA; | |
593 | comedi_event(this_usbduxsub->comedidev, s); | |
594 | /* we do an unlink if we are in the high speed mode */ | |
595 | usbdux_ao_stop(this_usbduxsub, 0); | |
596 | } | |
597 | return; | |
598 | } | |
599 | ||
600 | /* are we actually running? */ | |
601 | if (!(this_usbduxsub->ao_cmd_running)) | |
602 | return; | |
603 | ||
604 | /* normal operation: executing a command in this subdevice */ | |
605 | this_usbduxsub->ao_counter--; | |
606 | if ((int)this_usbduxsub->ao_counter <= 0) { | |
607 | /* timer zero */ | |
608 | this_usbduxsub->ao_counter = this_usbduxsub->ao_timer; | |
609 | ||
3ee0206b AG |
610 | /* handle non continuous acquisition */ |
611 | if (!(this_usbduxsub->ao_continuous)) { | |
dd89e20d BP |
612 | /* fixed number of samples */ |
613 | this_usbduxsub->ao_sample_count--; | |
614 | if (this_usbduxsub->ao_sample_count < 0) { | |
615 | /* all samples transmitted */ | |
616 | usbdux_ao_stop(this_usbduxsub, 0); | |
617 | s->async->events |= COMEDI_CB_EOA; | |
618 | comedi_event(this_usbduxsub->comedidev, s); | |
619 | /* no resubmit of the urb */ | |
620 | return; | |
621 | } | |
622 | } | |
623 | /* transmit data to the USB bus */ | |
624 | ((uint8_t *) (urb->transfer_buffer))[0] = | |
625 | s->async->cmd.chanlist_len; | |
626 | for (i = 0; i < s->async->cmd.chanlist_len; i++) { | |
627 | short temp; | |
628 | if (i >= NUMOUTCHANNELS) | |
629 | break; | |
630 | ||
631 | /* pointer to the DA */ | |
632 | datap = | |
633 | (&(((uint8_t *) urb->transfer_buffer)[i * 2 + 1])); | |
634 | /* get the data from comedi */ | |
635 | ret = comedi_buf_get(s->async, &temp); | |
636 | datap[0] = temp; | |
637 | datap[1] = this_usbduxsub->dac_commands[i]; | |
638 | /* printk("data[0]=%x, data[1]=%x, data[2]=%x\n", */ | |
639 | /* datap[0],datap[1],datap[2]); */ | |
640 | if (ret < 0) { | |
641 | dev_err(&urb->dev->dev, | |
642 | "comedi: buffer underflow\n"); | |
643 | s->async->events |= COMEDI_CB_EOA; | |
644 | s->async->events |= COMEDI_CB_OVERFLOW; | |
645 | } | |
646 | /* transmit data to comedi */ | |
647 | s->async->events |= COMEDI_CB_BLOCK; | |
648 | comedi_event(this_usbduxsub->comedidev, s); | |
649 | } | |
650 | } | |
651 | urb->transfer_buffer_length = SIZEOUTBUF; | |
652 | urb->dev = this_usbduxsub->usbdev; | |
653 | urb->status = 0; | |
654 | if (this_usbduxsub->ao_cmd_running) { | |
655 | if (this_usbduxsub->high_speed) { | |
656 | /* uframes */ | |
657 | urb->interval = 8; | |
658 | } else { | |
659 | /* frames */ | |
660 | urb->interval = 1; | |
661 | } | |
662 | urb->number_of_packets = 1; | |
663 | urb->iso_frame_desc[0].offset = 0; | |
664 | urb->iso_frame_desc[0].length = SIZEOUTBUF; | |
665 | urb->iso_frame_desc[0].status = 0; | |
666 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
667 | if (ret < 0) { | |
668 | dev_err(&urb->dev->dev, | |
669 | "comedi_: ao urb resubm failed in int-cont. " | |
670 | "ret=%d", ret); | |
671 | if (ret == EL2NSYNC) | |
672 | dev_err(&urb->dev->dev, | |
673 | "buggy USB host controller or bug in " | |
674 | "IRQ handling!\n"); | |
675 | ||
676 | s->async->events |= COMEDI_CB_EOA; | |
677 | s->async->events |= COMEDI_CB_ERROR; | |
678 | comedi_event(this_usbduxsub->comedidev, s); | |
679 | /* don't do an unlink here */ | |
680 | usbdux_ao_stop(this_usbduxsub, 0); | |
681 | } | |
682 | } | |
683 | } | |
684 | ||
685 | static int usbduxsub_start(struct usbduxsub *usbduxsub) | |
686 | { | |
687 | int errcode = 0; | |
688 | uint8_t local_transfer_buffer[16]; | |
689 | ||
690 | /* 7f92 to zero */ | |
691 | local_transfer_buffer[0] = 0; | |
692 | errcode = usb_control_msg(usbduxsub->usbdev, | |
693 | /* create a pipe for a control transfer */ | |
694 | usb_sndctrlpipe(usbduxsub->usbdev, 0), | |
695 | /* bRequest, "Firmware" */ | |
696 | USBDUXSUB_FIRMWARE, | |
697 | /* bmRequestType */ | |
698 | VENDOR_DIR_OUT, | |
699 | /* Value */ | |
700 | USBDUXSUB_CPUCS, | |
701 | /* Index */ | |
702 | 0x0000, | |
703 | /* address of the transfer buffer */ | |
704 | local_transfer_buffer, | |
705 | /* Length */ | |
706 | 1, | |
707 | /* Timeout */ | |
708 | BULK_TIMEOUT); | |
709 | if (errcode < 0) { | |
710 | dev_err(&usbduxsub->interface->dev, | |
711 | "comedi_: control msg failed (start)\n"); | |
712 | return errcode; | |
713 | } | |
714 | return 0; | |
715 | } | |
716 | ||
717 | static int usbduxsub_stop(struct usbduxsub *usbduxsub) | |
718 | { | |
719 | int errcode = 0; | |
720 | ||
721 | uint8_t local_transfer_buffer[16]; | |
722 | ||
723 | /* 7f92 to one */ | |
724 | local_transfer_buffer[0] = 1; | |
725 | errcode = usb_control_msg(usbduxsub->usbdev, | |
726 | usb_sndctrlpipe(usbduxsub->usbdev, 0), | |
727 | /* bRequest, "Firmware" */ | |
728 | USBDUXSUB_FIRMWARE, | |
729 | /* bmRequestType */ | |
730 | VENDOR_DIR_OUT, | |
731 | /* Value */ | |
732 | USBDUXSUB_CPUCS, | |
733 | /* Index */ | |
734 | 0x0000, local_transfer_buffer, | |
735 | /* Length */ | |
736 | 1, | |
737 | /* Timeout */ | |
738 | BULK_TIMEOUT); | |
739 | if (errcode < 0) { | |
740 | dev_err(&usbduxsub->interface->dev, | |
741 | "comedi_: control msg failed (stop)\n"); | |
742 | return errcode; | |
743 | } | |
744 | return 0; | |
745 | } | |
746 | ||
747 | static int usbduxsub_upload(struct usbduxsub *usbduxsub, | |
748 | uint8_t *local_transfer_buffer, | |
749 | unsigned int startAddr, unsigned int len) | |
750 | { | |
751 | int errcode; | |
752 | ||
753 | errcode = usb_control_msg(usbduxsub->usbdev, | |
754 | usb_sndctrlpipe(usbduxsub->usbdev, 0), | |
755 | /* brequest, firmware */ | |
756 | USBDUXSUB_FIRMWARE, | |
757 | /* bmRequestType */ | |
758 | VENDOR_DIR_OUT, | |
759 | /* value */ | |
760 | startAddr, | |
761 | /* index */ | |
762 | 0x0000, | |
763 | /* our local safe buffer */ | |
764 | local_transfer_buffer, | |
765 | /* length */ | |
766 | len, | |
767 | /* timeout */ | |
768 | BULK_TIMEOUT); | |
769 | dev_dbg(&usbduxsub->interface->dev, "comedi_: result=%d\n", errcode); | |
770 | if (errcode < 0) { | |
771 | dev_err(&usbduxsub->interface->dev, | |
772 | "comedi_: upload failed\n"); | |
773 | return errcode; | |
774 | } | |
775 | return 0; | |
776 | } | |
777 | ||
778 | /* the FX2LP has twice as much as the standard FX2 */ | |
779 | #define FIRMWARE_MAX_LEN 0x4000 | |
780 | ||
781 | static int firmwareUpload(struct usbduxsub *usbduxsub, | |
782 | const u8 *firmwareBinary, int sizeFirmware) | |
783 | { | |
784 | int ret; | |
785 | uint8_t *fwBuf; | |
786 | ||
787 | if (!firmwareBinary) | |
788 | return 0; | |
789 | ||
790 | if (sizeFirmware > FIRMWARE_MAX_LEN) { | |
791 | dev_err(&usbduxsub->interface->dev, | |
792 | "usbduxsigma firmware binary it too large for FX2.\n"); | |
793 | return -ENOMEM; | |
794 | } | |
795 | ||
796 | /* we generate a local buffer for the firmware */ | |
797 | fwBuf = kmemdup(firmwareBinary, sizeFirmware, GFP_KERNEL); | |
798 | if (!fwBuf) { | |
799 | dev_err(&usbduxsub->interface->dev, | |
800 | "comedi_: mem alloc for firmware failed\n"); | |
801 | return -ENOMEM; | |
802 | } | |
803 | ||
804 | ret = usbduxsub_stop(usbduxsub); | |
805 | if (ret < 0) { | |
806 | dev_err(&usbduxsub->interface->dev, | |
807 | "comedi_: can not stop firmware\n"); | |
808 | kfree(fwBuf); | |
809 | return ret; | |
810 | } | |
811 | ||
812 | ret = usbduxsub_upload(usbduxsub, fwBuf, 0, sizeFirmware); | |
813 | if (ret < 0) { | |
814 | dev_err(&usbduxsub->interface->dev, | |
815 | "comedi_: firmware upload failed\n"); | |
816 | kfree(fwBuf); | |
817 | return ret; | |
818 | } | |
819 | ret = usbduxsub_start(usbduxsub); | |
820 | if (ret < 0) { | |
821 | dev_err(&usbduxsub->interface->dev, | |
822 | "comedi_: can not start firmware\n"); | |
823 | kfree(fwBuf); | |
824 | return ret; | |
825 | } | |
826 | kfree(fwBuf); | |
827 | return 0; | |
828 | } | |
829 | ||
830 | static int usbduxsub_submit_InURBs(struct usbduxsub *usbduxsub) | |
831 | { | |
832 | int i, errFlag; | |
833 | ||
834 | if (!usbduxsub) | |
835 | return -EFAULT; | |
836 | ||
837 | /* Submit all URBs and start the transfer on the bus */ | |
838 | for (i = 0; i < usbduxsub->numOfInBuffers; i++) { | |
839 | /* in case of a resubmission after an unlink... */ | |
840 | usbduxsub->urbIn[i]->interval = usbduxsub->ai_interval; | |
841 | usbduxsub->urbIn[i]->context = usbduxsub->comedidev; | |
842 | usbduxsub->urbIn[i]->dev = usbduxsub->usbdev; | |
843 | usbduxsub->urbIn[i]->status = 0; | |
844 | usbduxsub->urbIn[i]->transfer_flags = URB_ISO_ASAP; | |
845 | dev_dbg(&usbduxsub->interface->dev, | |
846 | "comedi%d: submitting in-urb[%d]: %p,%p intv=%d\n", | |
847 | usbduxsub->comedidev->minor, i, | |
848 | (usbduxsub->urbIn[i]->context), | |
849 | (usbduxsub->urbIn[i]->dev), | |
850 | (usbduxsub->urbIn[i]->interval)); | |
851 | errFlag = usb_submit_urb(usbduxsub->urbIn[i], GFP_ATOMIC); | |
852 | if (errFlag) { | |
853 | dev_err(&usbduxsub->interface->dev, | |
854 | "comedi_: ai: usb_submit_urb(%d) error %d\n", | |
855 | i, errFlag); | |
856 | return errFlag; | |
857 | } | |
858 | } | |
859 | return 0; | |
860 | } | |
861 | ||
862 | static int usbduxsub_submit_OutURBs(struct usbduxsub *usbduxsub) | |
863 | { | |
864 | int i, errFlag; | |
865 | ||
866 | if (!usbduxsub) | |
867 | return -EFAULT; | |
868 | ||
869 | for (i = 0; i < usbduxsub->numOfOutBuffers; i++) { | |
870 | dev_dbg(&usbduxsub->interface->dev, | |
871 | "comedi_: submitting out-urb[%d]\n", i); | |
872 | /* in case of a resubmission after an unlink... */ | |
873 | usbduxsub->urbOut[i]->context = usbduxsub->comedidev; | |
874 | usbduxsub->urbOut[i]->dev = usbduxsub->usbdev; | |
875 | usbduxsub->urbOut[i]->status = 0; | |
876 | usbduxsub->urbOut[i]->transfer_flags = URB_ISO_ASAP; | |
877 | errFlag = usb_submit_urb(usbduxsub->urbOut[i], GFP_ATOMIC); | |
878 | if (errFlag) { | |
879 | dev_err(&usbduxsub->interface->dev, | |
880 | "comedi_: ao: usb_submit_urb(%d) error %d\n", | |
881 | i, errFlag); | |
882 | return errFlag; | |
883 | } | |
884 | } | |
885 | return 0; | |
886 | } | |
887 | ||
888 | static int chanToInterval(int nChannels) | |
889 | { | |
890 | if (nChannels <= 2) | |
891 | /* 4kHz */ | |
892 | return 2; | |
893 | if (nChannels <= 8) | |
894 | /* 2kHz */ | |
895 | return 4; | |
896 | /* 1kHz */ | |
897 | return 8; | |
898 | } | |
899 | ||
900 | static int usbdux_ai_cmdtest(struct comedi_device *dev, | |
901 | struct comedi_subdevice *s, | |
902 | struct comedi_cmd *cmd) | |
903 | { | |
904 | int err = 0, tmp, i; | |
905 | unsigned int tmpTimer; | |
906 | struct usbduxsub *this_usbduxsub = dev->private; | |
907 | ||
908 | if (!(this_usbduxsub->probed)) | |
909 | return -ENODEV; | |
910 | ||
911 | dev_dbg(&this_usbduxsub->interface->dev, | |
912 | "comedi%d: usbdux_ai_cmdtest\n", dev->minor); | |
913 | ||
914 | /* make sure triggers are valid */ | |
915 | /* Only immediate triggers are allowed */ | |
916 | tmp = cmd->start_src; | |
917 | cmd->start_src &= TRIG_NOW | TRIG_INT; | |
918 | if (!cmd->start_src || tmp != cmd->start_src) | |
919 | err++; | |
920 | ||
921 | /* trigger should happen timed */ | |
922 | tmp = cmd->scan_begin_src; | |
923 | /* start a new _scan_ with a timer */ | |
924 | cmd->scan_begin_src &= TRIG_TIMER; | |
925 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
926 | err++; | |
927 | ||
3ee0206b | 928 | /* scanning is continuous */ |
dd89e20d BP |
929 | tmp = cmd->convert_src; |
930 | cmd->convert_src &= TRIG_NOW; | |
931 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
932 | err++; | |
933 | ||
934 | /* issue a trigger when scan is finished and start a new scan */ | |
935 | tmp = cmd->scan_end_src; | |
936 | cmd->scan_end_src &= TRIG_COUNT; | |
937 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
938 | err++; | |
939 | ||
940 | /* trigger at the end of count events or not, stop condition or not */ | |
941 | tmp = cmd->stop_src; | |
942 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
943 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
944 | err++; | |
945 | ||
946 | if (err) | |
947 | return 1; | |
948 | ||
949 | /* | |
950 | * step 2: make sure trigger sources are unique and mutually compatible | |
951 | * note that mutual compatibility is not an issue here | |
952 | */ | |
953 | if (cmd->scan_begin_src != TRIG_FOLLOW && | |
954 | cmd->scan_begin_src != TRIG_EXT && | |
955 | cmd->scan_begin_src != TRIG_TIMER) | |
956 | err++; | |
957 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
958 | err++; | |
959 | ||
960 | if (err) | |
961 | return 2; | |
962 | ||
963 | /* step 3: make sure arguments are trivially compatible */ | |
964 | if (cmd->start_arg != 0) { | |
965 | cmd->start_arg = 0; | |
966 | err++; | |
967 | } | |
968 | ||
969 | if (cmd->scan_begin_src == TRIG_FOLLOW) { | |
970 | /* internal trigger */ | |
971 | if (cmd->scan_begin_arg != 0) { | |
972 | cmd->scan_begin_arg = 0; | |
973 | err++; | |
974 | } | |
975 | } | |
976 | ||
977 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
978 | if (this_usbduxsub->high_speed) { | |
979 | /* | |
980 | * In high speed mode microframes are possible. | |
981 | * However, during one microframe we can roughly | |
982 | * sample two channels. Thus, the more channels | |
983 | * are in the channel list the more time we need. | |
984 | */ | |
985 | i = chanToInterval(cmd->chanlist_len); | |
986 | if (cmd->scan_begin_arg < (1000000 / 8 * i)) { | |
987 | cmd->scan_begin_arg = 1000000 / 8 * i; | |
988 | err++; | |
989 | } | |
990 | /* now calc the real sampling rate with all the | |
991 | * rounding errors */ | |
992 | tmpTimer = | |
993 | ((unsigned int)(cmd->scan_begin_arg / 125000)) * | |
994 | 125000; | |
995 | if (cmd->scan_begin_arg != tmpTimer) { | |
996 | cmd->scan_begin_arg = tmpTimer; | |
997 | err++; | |
998 | } | |
999 | } else { | |
1000 | /* full speed */ | |
1001 | /* 1kHz scans every USB frame */ | |
1002 | if (cmd->scan_begin_arg < 1000000) { | |
1003 | cmd->scan_begin_arg = 1000000; | |
1004 | err++; | |
1005 | } | |
1006 | /* | |
1007 | * calc the real sampling rate with the rounding errors | |
1008 | */ | |
1009 | tmpTimer = ((unsigned int)(cmd->scan_begin_arg / | |
1010 | 1000000)) * 1000000; | |
1011 | if (cmd->scan_begin_arg != tmpTimer) { | |
1012 | cmd->scan_begin_arg = tmpTimer; | |
1013 | err++; | |
1014 | } | |
1015 | } | |
1016 | } | |
1017 | /* the same argument */ | |
1018 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
1019 | cmd->scan_end_arg = cmd->chanlist_len; | |
1020 | err++; | |
1021 | } | |
1022 | ||
1023 | if (cmd->stop_src == TRIG_COUNT) { | |
1024 | /* any count is allowed */ | |
1025 | } else { | |
1026 | /* TRIG_NONE */ | |
1027 | if (cmd->stop_arg != 0) { | |
1028 | cmd->stop_arg = 0; | |
1029 | err++; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | if (err) | |
1034 | return 3; | |
1035 | ||
1036 | return 0; | |
1037 | } | |
1038 | ||
1039 | /* | |
1040 | * creates the ADC command for the MAX1271 | |
1041 | * range is the range value from comedi | |
1042 | */ | |
1043 | static void create_adc_command(unsigned int chan, | |
1044 | uint8_t *muxsg0, | |
1045 | uint8_t *muxsg1) | |
1046 | { | |
1047 | if (chan < 8) | |
1048 | (*muxsg0) = (*muxsg0) | (1 << chan); | |
1049 | else if (chan < 16) | |
1050 | (*muxsg1) = (*muxsg1) | (1 << (chan-8)); | |
1051 | } | |
1052 | ||
1053 | ||
1054 | /* bulk transfers to usbdux */ | |
1055 | ||
1056 | #define SENDADCOMMANDS 0 | |
1057 | #define SENDDACOMMANDS 1 | |
1058 | #define SENDDIOCONFIGCOMMAND 2 | |
1059 | #define SENDDIOBITSCOMMAND 3 | |
1060 | #define SENDSINGLEAD 4 | |
1061 | #define SENDPWMON 7 | |
1062 | #define SENDPWMOFF 8 | |
1063 | ||
1064 | static int send_dux_commands(struct usbduxsub *this_usbduxsub, int cmd_type) | |
1065 | { | |
1066 | int result, nsent; | |
1067 | ||
1068 | this_usbduxsub->dux_commands[0] = cmd_type; | |
1069 | #ifdef NOISY_DUX_DEBUGBUG | |
1070 | printk(KERN_DEBUG "comedi%d: usbdux: dux_commands: ", | |
1071 | this_usbduxsub->comedidev->minor); | |
1072 | for (result = 0; result < SIZEOFDUXBUFFER; result++) | |
1073 | printk(" %02x", this_usbduxsub->dux_commands[result]); | |
1074 | printk("\n"); | |
1075 | #endif | |
1076 | result = usb_bulk_msg(this_usbduxsub->usbdev, | |
1077 | usb_sndbulkpipe(this_usbduxsub->usbdev, | |
1078 | COMMAND_OUT_EP), | |
1079 | this_usbduxsub->dux_commands, SIZEOFDUXBUFFER, | |
1080 | &nsent, BULK_TIMEOUT); | |
1081 | if (result < 0) | |
1082 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " | |
1083 | "could not transmit dux_command to the usb-device, " | |
1084 | "err=%d\n", this_usbduxsub->comedidev->minor, result); | |
1085 | ||
1086 | return result; | |
1087 | } | |
1088 | ||
1089 | static int receive_dux_commands(struct usbduxsub *this_usbduxsub, int command) | |
1090 | { | |
1091 | int result = (-EFAULT); | |
1092 | int nrec; | |
1093 | int i; | |
1094 | ||
1095 | for (i = 0; i < RETRIES; i++) { | |
1096 | result = usb_bulk_msg(this_usbduxsub->usbdev, | |
1097 | usb_rcvbulkpipe(this_usbduxsub->usbdev, | |
1098 | COMMAND_IN_EP), | |
1099 | this_usbduxsub->insnBuffer, SIZEINSNBUF, | |
1100 | &nrec, BULK_TIMEOUT); | |
1101 | if (result < 0) { | |
1102 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " | |
1103 | "insn: USB error %d " | |
1104 | "while receiving DUX command" | |
1105 | "\n", this_usbduxsub->comedidev->minor, | |
1106 | result); | |
1107 | return result; | |
1108 | } | |
1109 | if (this_usbduxsub->insnBuffer[0] == command) | |
1110 | return result; | |
1111 | } | |
1112 | /* this is only reached if the data has been requested a couple of | |
1113 | * times */ | |
1114 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: insn: " | |
1115 | "wrong data returned from firmware: want %d, got %d.\n", | |
1116 | this_usbduxsub->comedidev->minor, command, | |
1117 | this_usbduxsub->insnBuffer[0]); | |
1118 | return -EFAULT; | |
1119 | } | |
1120 | ||
1121 | static int usbdux_ai_inttrig(struct comedi_device *dev, | |
1122 | struct comedi_subdevice *s, unsigned int trignum) | |
1123 | { | |
1124 | int ret; | |
1125 | struct usbduxsub *this_usbduxsub = dev->private; | |
1126 | if (!this_usbduxsub) | |
1127 | return -EFAULT; | |
1128 | ||
1129 | down(&this_usbduxsub->sem); | |
1130 | if (!(this_usbduxsub->probed)) { | |
1131 | up(&this_usbduxsub->sem); | |
1132 | return -ENODEV; | |
1133 | } | |
1134 | dev_dbg(&this_usbduxsub->interface->dev, | |
1135 | "comedi%d: usbdux_ai_inttrig\n", dev->minor); | |
1136 | ||
1137 | if (trignum != 0) { | |
1138 | dev_err(&this_usbduxsub->interface->dev, | |
1139 | "comedi%d: usbdux_ai_inttrig: invalid trignum\n", | |
1140 | dev->minor); | |
1141 | up(&this_usbduxsub->sem); | |
1142 | return -EINVAL; | |
1143 | } | |
1144 | if (!(this_usbduxsub->ai_cmd_running)) { | |
1145 | this_usbduxsub->ai_cmd_running = 1; | |
1146 | ret = usbduxsub_submit_InURBs(this_usbduxsub); | |
1147 | if (ret < 0) { | |
1148 | dev_err(&this_usbduxsub->interface->dev, | |
1149 | "comedi%d: usbdux_ai_inttrig: " | |
1150 | "urbSubmit: err=%d\n", dev->minor, ret); | |
1151 | this_usbduxsub->ai_cmd_running = 0; | |
1152 | up(&this_usbduxsub->sem); | |
1153 | return ret; | |
1154 | } | |
1155 | s->async->inttrig = NULL; | |
1156 | } else { | |
1157 | dev_err(&this_usbduxsub->interface->dev, | |
1158 | "comedi%d: ai_inttrig but acqu is already running\n", | |
1159 | dev->minor); | |
1160 | } | |
1161 | up(&this_usbduxsub->sem); | |
1162 | return 1; | |
1163 | } | |
1164 | ||
1165 | static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s) | |
1166 | { | |
1167 | struct comedi_cmd *cmd = &s->async->cmd; | |
1168 | unsigned int chan; | |
1169 | int i, ret; | |
1170 | struct usbduxsub *this_usbduxsub = dev->private; | |
1171 | int result; | |
1172 | uint8_t muxsg0 = 0; | |
1173 | uint8_t muxsg1 = 0; | |
1174 | uint8_t sysred = 0; | |
1175 | ||
1176 | if (!this_usbduxsub) | |
1177 | return -EFAULT; | |
1178 | ||
1179 | dev_dbg(&this_usbduxsub->interface->dev, | |
1180 | "comedi%d: usbdux_ai_cmd\n", dev->minor); | |
1181 | ||
1182 | /* block other CPUs from starting an ai_cmd */ | |
1183 | down(&this_usbduxsub->sem); | |
1184 | ||
1185 | if (!(this_usbduxsub->probed)) { | |
1186 | up(&this_usbduxsub->sem); | |
1187 | return -ENODEV; | |
1188 | } | |
1189 | if (this_usbduxsub->ai_cmd_running) { | |
1190 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: " | |
1191 | "ai_cmd not possible. Another ai_cmd is running.\n", | |
1192 | dev->minor); | |
1193 | up(&this_usbduxsub->sem); | |
1194 | return -EBUSY; | |
1195 | } | |
3ee0206b | 1196 | /* set current channel of the running acquisition to zero */ |
dd89e20d BP |
1197 | s->async->cur_chan = 0; |
1198 | ||
1199 | /* first the number of channels per time step */ | |
1200 | this_usbduxsub->dux_commands[1] = cmd->chanlist_len; | |
1201 | ||
1202 | /* CONFIG0 */ | |
1203 | this_usbduxsub->dux_commands[2] = 0x12; | |
1204 | ||
1205 | /* CONFIG1: 23kHz sampling rate, delay = 0us, */ | |
1206 | this_usbduxsub->dux_commands[3] = 0x03; | |
1207 | ||
1208 | /* CONFIG3: differential channels off */ | |
1209 | this_usbduxsub->dux_commands[4] = 0x00; | |
1210 | ||
1211 | for (i = 0; i < cmd->chanlist_len; i++) { | |
1212 | chan = CR_CHAN(cmd->chanlist[i]); | |
1213 | create_adc_command(chan, &muxsg0, &muxsg1); | |
1214 | if (i >= NUMCHANNELS) { | |
1215 | dev_err(&this_usbduxsub->interface->dev, | |
1216 | "comedi%d: channel list too long\n", | |
1217 | dev->minor); | |
1218 | break; | |
1219 | } | |
1220 | } | |
1221 | this_usbduxsub->dux_commands[5] = muxsg0; | |
1222 | this_usbduxsub->dux_commands[6] = muxsg1; | |
1223 | this_usbduxsub->dux_commands[7] = sysred; | |
1224 | ||
1225 | dev_dbg(&this_usbduxsub->interface->dev, | |
1226 | "comedi %d: sending commands to the usb device: size=%u\n", | |
1227 | dev->minor, NUMCHANNELS); | |
1228 | ||
1229 | result = send_dux_commands(this_usbduxsub, SENDADCOMMANDS); | |
1230 | if (result < 0) { | |
1231 | up(&this_usbduxsub->sem); | |
1232 | return result; | |
1233 | } | |
1234 | ||
1235 | if (this_usbduxsub->high_speed) { | |
1236 | /* | |
1237 | * every 2 channels get a time window of 125us. Thus, if we | |
1238 | * sample all 16 channels we need 1ms. If we sample only one | |
1239 | * channel we need only 125us | |
1240 | */ | |
1241 | this_usbduxsub->ai_interval = | |
1242 | chanToInterval(cmd->chanlist_len); | |
1243 | this_usbduxsub->ai_timer = cmd->scan_begin_arg / (125000 * | |
1244 | (this_usbduxsub-> | |
1245 | ai_interval)); | |
1246 | } else { | |
1247 | /* interval always 1ms */ | |
1248 | this_usbduxsub->ai_interval = 1; | |
1249 | this_usbduxsub->ai_timer = cmd->scan_begin_arg / 1000000; | |
1250 | } | |
1251 | if (this_usbduxsub->ai_timer < 1) { | |
1252 | dev_err(&this_usbduxsub->interface->dev, "comedi%d: ai_cmd: " | |
1253 | "timer=%d, scan_begin_arg=%d. " | |
1254 | "Not properly tested by cmdtest?\n", dev->minor, | |
1255 | this_usbduxsub->ai_timer, cmd->scan_begin_arg); | |
1256 | up(&this_usbduxsub->sem); | |
1257 | return -EINVAL; | |
1258 | } | |
1259 | this_usbduxsub->ai_counter = this_usbduxsub->ai_timer; | |
1260 | ||
1261 | if (cmd->stop_src == TRIG_COUNT) { | |
1262 | /* data arrives as one packet */ | |
1263 | this_usbduxsub->ai_sample_count = cmd->stop_arg; | |
3ee0206b | 1264 | this_usbduxsub->ai_continuous = 0; |
dd89e20d | 1265 | } else { |
3ee0206b AG |
1266 | /* continuous acquisition */ |
1267 | this_usbduxsub->ai_continuous = 1; | |
dd89e20d BP |
1268 | this_usbduxsub->ai_sample_count = 0; |
1269 | } | |
1270 | ||
1271 | if (cmd->start_src == TRIG_NOW) { | |
1272 | /* enable this acquisition operation */ | |
1273 | this_usbduxsub->ai_cmd_running = 1; | |
1274 | ret = usbduxsub_submit_InURBs(this_usbduxsub); | |
1275 | if (ret < 0) { | |
1276 | this_usbduxsub->ai_cmd_running = 0; | |
1277 | /* fixme: unlink here?? */ | |
1278 | up(&this_usbduxsub->sem); | |
1279 | return ret; | |
1280 | } | |
1281 | s->async->inttrig = NULL; | |
1282 | } else { | |
1283 | /* TRIG_INT */ | |
1284 | /* don't enable the acquision operation */ | |
1285 | /* wait for an internal signal */ | |
1286 | s->async->inttrig = usbdux_ai_inttrig; | |
1287 | } | |
1288 | up(&this_usbduxsub->sem); | |
1289 | return 0; | |
1290 | } | |
1291 | ||
1292 | /* Mode 0 is used to get a single conversion on demand */ | |
1293 | static int usbdux_ai_insn_read(struct comedi_device *dev, | |
1294 | struct comedi_subdevice *s, | |
1295 | struct comedi_insn *insn, unsigned int *data) | |
1296 | { | |
1297 | int i; | |
1298 | int32_t one = 0; | |
1299 | int chan; | |
1300 | int err; | |
1301 | struct usbduxsub *this_usbduxsub = dev->private; | |
1302 | uint8_t muxsg0 = 0; | |
1303 | uint8_t muxsg1 = 0; | |
1304 | uint8_t sysred = 0; | |
1305 | ||
1306 | if (!this_usbduxsub) | |
1307 | return 0; | |
1308 | ||
1309 | dev_dbg(&this_usbduxsub->interface->dev, | |
1310 | "comedi%d: ai_insn_read, insn->n=%d, insn->subdev=%d\n", | |
1311 | dev->minor, insn->n, insn->subdev); | |
1312 | ||
1313 | down(&this_usbduxsub->sem); | |
1314 | if (!(this_usbduxsub->probed)) { | |
1315 | up(&this_usbduxsub->sem); | |
1316 | return -ENODEV; | |
1317 | } | |
1318 | if (this_usbduxsub->ai_cmd_running) { | |
1319 | dev_err(&this_usbduxsub->interface->dev, | |
1320 | "comedi%d: ai_insn_read not possible. " | |
1321 | "Async Command is running.\n", dev->minor); | |
1322 | up(&this_usbduxsub->sem); | |
1323 | return 0; | |
1324 | } | |
1325 | ||
1326 | /* sample one channel */ | |
1327 | /* CONFIG0: chopper on */ | |
1328 | this_usbduxsub->dux_commands[1] = 0x16; | |
1329 | ||
1330 | /* CONFIG1: 2kHz sampling rate */ | |
1331 | this_usbduxsub->dux_commands[2] = 0x80; | |
1332 | ||
1333 | /* CONFIG3: differential channels off */ | |
1334 | this_usbduxsub->dux_commands[3] = 0x00; | |
1335 | ||
1336 | chan = CR_CHAN(insn->chanspec); | |
1337 | create_adc_command(chan, &muxsg0, &muxsg1); | |
1338 | ||
1339 | this_usbduxsub->dux_commands[4] = muxsg0; | |
1340 | this_usbduxsub->dux_commands[5] = muxsg1; | |
1341 | this_usbduxsub->dux_commands[6] = sysred; | |
1342 | ||
1343 | /* adc commands */ | |
1344 | err = send_dux_commands(this_usbduxsub, SENDSINGLEAD); | |
1345 | if (err < 0) { | |
1346 | up(&this_usbduxsub->sem); | |
1347 | return err; | |
1348 | } | |
1349 | ||
1350 | for (i = 0; i < insn->n; i++) { | |
1351 | err = receive_dux_commands(this_usbduxsub, SENDSINGLEAD); | |
1352 | if (err < 0) { | |
1353 | up(&this_usbduxsub->sem); | |
1354 | return 0; | |
1355 | } | |
1356 | /* 32 bits big endian from the A/D converter */ | |
1357 | one = be32_to_cpu(*((int32_t *) | |
1358 | ((this_usbduxsub->insnBuffer)+1))); | |
1359 | /* mask out the staus byte */ | |
1360 | one = one & 0x00ffffff; | |
1361 | /* turn it into an unsigned integer */ | |
1362 | one = one ^ 0x00800000; | |
1363 | data[i] = one; | |
1364 | } | |
1365 | up(&this_usbduxsub->sem); | |
1366 | return i; | |
1367 | } | |
1368 | ||
1369 | ||
1370 | ||
1371 | ||
1372 | static int usbdux_getstatusinfo(struct comedi_device *dev, int chan) | |
1373 | { | |
1374 | struct usbduxsub *this_usbduxsub = dev->private; | |
1375 | uint8_t sysred = 0; | |
1376 | uint32_t one; | |
1377 | int err; | |
1378 | ||
1379 | if (!this_usbduxsub) | |
1380 | return 0; | |
1381 | ||
1382 | if (this_usbduxsub->ai_cmd_running) { | |
1383 | dev_err(&this_usbduxsub->interface->dev, | |
1384 | "comedi%d: status read not possible. " | |
1385 | "Async Command is running.\n", dev->minor); | |
1386 | return 0; | |
1387 | } | |
1388 | ||
1389 | /* CONFIG0 */ | |
1390 | this_usbduxsub->dux_commands[1] = 0x12; | |
1391 | ||
1392 | /* CONFIG1: 2kHz sampling rate */ | |
1393 | this_usbduxsub->dux_commands[2] = 0x80; | |
1394 | ||
1395 | /* CONFIG3: differential channels off */ | |
1396 | this_usbduxsub->dux_commands[3] = 0x00; | |
1397 | ||
1398 | if (chan == 1) { | |
1399 | /* ADC offset */ | |
1400 | sysred = sysred | 1; | |
1401 | } else if (chan == 2) { | |
1402 | /* VCC */ | |
1403 | sysred = sysred | 4; | |
1404 | } else if (chan == 3) { | |
1405 | /* temperature */ | |
1406 | sysred = sysred | 8; | |
1407 | } else if (chan == 4) { | |
1408 | /* gain */ | |
1409 | sysred = sysred | 16; | |
1410 | } else if (chan == 5) { | |
1411 | /* ref */ | |
1412 | sysred = sysred | 32; | |
1413 | } | |
1414 | ||
1415 | this_usbduxsub->dux_commands[4] = 0; | |
1416 | this_usbduxsub->dux_commands[5] = 0; | |
1417 | this_usbduxsub->dux_commands[6] = sysred; | |
1418 | ||
1419 | /* adc commands */ | |
1420 | err = send_dux_commands(this_usbduxsub, SENDSINGLEAD); | |
1421 | if (err < 0) | |
1422 | return err; | |
1423 | ||
1424 | err = receive_dux_commands(this_usbduxsub, SENDSINGLEAD); | |
1425 | if (err < 0) | |
1426 | return err; | |
1427 | ||
1428 | /* 32 bits big endian from the A/D converter */ | |
1429 | one = be32_to_cpu(*((int32_t *)((this_usbduxsub->insnBuffer)+1))); | |
1430 | /* mask out the staus byte */ | |
1431 | one = one & 0x00ffffff; | |
1432 | one = one ^ 0x00800000; | |
1433 | ||
1434 | return (int)one; | |
1435 | } | |
1436 | ||
1437 | ||
1438 | ||
1439 | ||
1440 | ||
1441 | ||
1442 | /************************************/ | |
1443 | /* analog out */ | |
1444 | ||
1445 | static int usbdux_ao_insn_read(struct comedi_device *dev, | |
1446 | struct comedi_subdevice *s, | |
1447 | struct comedi_insn *insn, unsigned int *data) | |
1448 | { | |
1449 | int i; | |
1450 | int chan = CR_CHAN(insn->chanspec); | |
1451 | struct usbduxsub *this_usbduxsub = dev->private; | |
1452 | ||
1453 | if (!this_usbduxsub) | |
1454 | return -EFAULT; | |
1455 | ||
1456 | down(&this_usbduxsub->sem); | |
1457 | if (!(this_usbduxsub->probed)) { | |
1458 | up(&this_usbduxsub->sem); | |
1459 | return -ENODEV; | |
1460 | } | |
1461 | for (i = 0; i < insn->n; i++) | |
1462 | data[i] = this_usbduxsub->outBuffer[chan]; | |
1463 | ||
1464 | up(&this_usbduxsub->sem); | |
1465 | return i; | |
1466 | } | |
1467 | ||
1468 | static int usbdux_ao_insn_write(struct comedi_device *dev, | |
1469 | struct comedi_subdevice *s, | |
1470 | struct comedi_insn *insn, unsigned int *data) | |
1471 | { | |
1472 | int i, err; | |
1473 | int chan = CR_CHAN(insn->chanspec); | |
1474 | struct usbduxsub *this_usbduxsub = dev->private; | |
1475 | ||
1476 | if (!this_usbduxsub) | |
1477 | return -EFAULT; | |
1478 | ||
1479 | dev_dbg(&this_usbduxsub->interface->dev, | |
1480 | "comedi%d: ao_insn_write\n", dev->minor); | |
1481 | ||
1482 | down(&this_usbduxsub->sem); | |
1483 | if (!(this_usbduxsub->probed)) { | |
1484 | up(&this_usbduxsub->sem); | |
1485 | return -ENODEV; | |
1486 | } | |
1487 | if (this_usbduxsub->ao_cmd_running) { | |
1488 | dev_err(&this_usbduxsub->interface->dev, | |
1489 | "comedi%d: ao_insn_write: " | |
1490 | "ERROR: asynchronous ao_cmd is running\n", dev->minor); | |
1491 | up(&this_usbduxsub->sem); | |
1492 | return 0; | |
1493 | } | |
1494 | ||
1495 | for (i = 0; i < insn->n; i++) { | |
1496 | dev_dbg(&this_usbduxsub->interface->dev, | |
1497 | "comedi%d: ao_insn_write: data[chan=%d,i=%d]=%d\n", | |
1498 | dev->minor, chan, i, data[i]); | |
1499 | ||
1500 | /* number of channels: 1 */ | |
1501 | this_usbduxsub->dux_commands[1] = 1; | |
1502 | /* channel number */ | |
1503 | this_usbduxsub->dux_commands[2] = data[i]; | |
1504 | this_usbduxsub->outBuffer[chan] = data[i]; | |
1505 | this_usbduxsub->dux_commands[3] = chan; | |
1506 | err = send_dux_commands(this_usbduxsub, SENDDACOMMANDS); | |
1507 | if (err < 0) { | |
1508 | up(&this_usbduxsub->sem); | |
1509 | return err; | |
1510 | } | |
1511 | } | |
1512 | up(&this_usbduxsub->sem); | |
1513 | ||
1514 | return i; | |
1515 | } | |
1516 | ||
1517 | static int usbdux_ao_inttrig(struct comedi_device *dev, | |
1518 | struct comedi_subdevice *s, unsigned int trignum) | |
1519 | { | |
1520 | int ret; | |
1521 | struct usbduxsub *this_usbduxsub = dev->private; | |
1522 | ||
1523 | if (!this_usbduxsub) | |
1524 | return -EFAULT; | |
1525 | ||
1526 | down(&this_usbduxsub->sem); | |
d6610a50 | 1527 | |
dd89e20d | 1528 | if (!(this_usbduxsub->probed)) { |
d6610a50 DC |
1529 | ret = -ENODEV; |
1530 | goto out; | |
dd89e20d BP |
1531 | } |
1532 | if (trignum != 0) { | |
1533 | dev_err(&this_usbduxsub->interface->dev, | |
1534 | "comedi%d: usbdux_ao_inttrig: invalid trignum\n", | |
1535 | dev->minor); | |
d6610a50 DC |
1536 | ret = -EINVAL; |
1537 | goto out; | |
dd89e20d BP |
1538 | } |
1539 | if (!(this_usbduxsub->ao_cmd_running)) { | |
1540 | this_usbduxsub->ao_cmd_running = 1; | |
1541 | ret = usbduxsub_submit_OutURBs(this_usbduxsub); | |
1542 | if (ret < 0) { | |
1543 | dev_err(&this_usbduxsub->interface->dev, | |
1544 | "comedi%d: usbdux_ao_inttrig: submitURB: " | |
1545 | "err=%d\n", dev->minor, ret); | |
1546 | this_usbduxsub->ao_cmd_running = 0; | |
d6610a50 | 1547 | goto out; |
dd89e20d BP |
1548 | } |
1549 | s->async->inttrig = NULL; | |
1550 | } else { | |
1551 | dev_err(&this_usbduxsub->interface->dev, | |
1552 | "comedi%d: ao_inttrig but acqu is already running.\n", | |
1553 | dev->minor); | |
1554 | } | |
d6610a50 DC |
1555 | ret = 1; |
1556 | out: | |
dd89e20d | 1557 | up(&this_usbduxsub->sem); |
d6610a50 | 1558 | return ret; |
dd89e20d BP |
1559 | } |
1560 | ||
1561 | static int usbdux_ao_cmdtest(struct comedi_device *dev, | |
1562 | struct comedi_subdevice *s, | |
1563 | struct comedi_cmd *cmd) | |
1564 | { | |
1565 | int err = 0, tmp; | |
1566 | struct usbduxsub *this_usbduxsub = dev->private; | |
1567 | ||
1568 | if (!this_usbduxsub) | |
1569 | return -EFAULT; | |
1570 | ||
1571 | if (!(this_usbduxsub->probed)) | |
1572 | return -ENODEV; | |
1573 | ||
1574 | dev_dbg(&this_usbduxsub->interface->dev, | |
1575 | "comedi%d: usbdux_ao_cmdtest\n", dev->minor); | |
1576 | ||
1577 | /* make sure triggers are valid */ | |
1578 | /* Only immediate triggers are allowed */ | |
1579 | tmp = cmd->start_src; | |
1580 | cmd->start_src &= TRIG_NOW | TRIG_INT; | |
1581 | if (!cmd->start_src || tmp != cmd->start_src) | |
1582 | err++; | |
1583 | ||
1584 | /* trigger should happen timed */ | |
1585 | tmp = cmd->scan_begin_src; | |
1586 | /* just now we scan also in the high speed mode every frame */ | |
1587 | /* this is due to ehci driver limitations */ | |
1588 | if (0) { /* (this_usbduxsub->high_speed) */ | |
3ee0206b | 1589 | /* start immediately a new scan */ |
dd89e20d BP |
1590 | /* the sampling rate is set by the coversion rate */ |
1591 | cmd->scan_begin_src &= TRIG_FOLLOW; | |
1592 | } else { | |
1593 | /* start a new scan (output at once) with a timer */ | |
1594 | cmd->scan_begin_src &= TRIG_TIMER; | |
1595 | } | |
1596 | if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src) | |
1597 | err++; | |
1598 | ||
3ee0206b | 1599 | /* scanning is continuous */ |
dd89e20d BP |
1600 | tmp = cmd->convert_src; |
1601 | ||
1602 | /* all conversion events happen simultaneously */ | |
1603 | cmd->convert_src &= TRIG_NOW; | |
1604 | ||
1605 | if (!cmd->convert_src || tmp != cmd->convert_src) | |
1606 | err++; | |
1607 | ||
1608 | /* issue a trigger when scan is finished and start a new scan */ | |
1609 | tmp = cmd->scan_end_src; | |
1610 | cmd->scan_end_src &= TRIG_COUNT; | |
1611 | if (!cmd->scan_end_src || tmp != cmd->scan_end_src) | |
1612 | err++; | |
1613 | ||
1614 | /* trigger at the end of count events or not, stop condition or not */ | |
1615 | tmp = cmd->stop_src; | |
1616 | cmd->stop_src &= TRIG_COUNT | TRIG_NONE; | |
1617 | if (!cmd->stop_src || tmp != cmd->stop_src) | |
1618 | err++; | |
1619 | ||
1620 | if (err) | |
1621 | return 1; | |
1622 | ||
1623 | /* | |
1624 | * step 2: make sure trigger sources | |
1625 | * are unique and mutually compatible | |
1626 | * note that mutual compatibility is not an issue here | |
1627 | */ | |
1628 | if (cmd->scan_begin_src != TRIG_FOLLOW && | |
1629 | cmd->scan_begin_src != TRIG_EXT && | |
1630 | cmd->scan_begin_src != TRIG_TIMER) | |
1631 | err++; | |
1632 | if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE) | |
1633 | err++; | |
1634 | ||
1635 | if (err) | |
1636 | return 2; | |
1637 | ||
1638 | /* step 3: make sure arguments are trivially compatible */ | |
1639 | ||
1640 | if (cmd->start_arg != 0) { | |
1641 | cmd->start_arg = 0; | |
1642 | err++; | |
1643 | } | |
1644 | ||
1645 | if (cmd->scan_begin_src == TRIG_FOLLOW) { | |
1646 | /* internal trigger */ | |
1647 | if (cmd->scan_begin_arg != 0) { | |
1648 | cmd->scan_begin_arg = 0; | |
1649 | err++; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | if (cmd->scan_begin_src == TRIG_TIMER) { | |
1654 | /* timer */ | |
1655 | if (cmd->scan_begin_arg < 1000000) { | |
1656 | cmd->scan_begin_arg = 1000000; | |
1657 | err++; | |
1658 | } | |
1659 | } | |
1660 | /* not used now, is for later use */ | |
1661 | if (cmd->convert_src == TRIG_TIMER) { | |
1662 | if (cmd->convert_arg < 125000) { | |
1663 | cmd->convert_arg = 125000; | |
1664 | err++; | |
1665 | } | |
1666 | } | |
1667 | ||
1668 | /* the same argument */ | |
1669 | if (cmd->scan_end_arg != cmd->chanlist_len) { | |
1670 | cmd->scan_end_arg = cmd->chanlist_len; | |
1671 | err++; | |
1672 | } | |
1673 | ||
1674 | if (cmd->stop_src == TRIG_COUNT) { | |
1675 | /* any count is allowed */ | |
1676 | } else { | |
1677 | /* TRIG_NONE */ | |
1678 | if (cmd->stop_arg != 0) { | |
1679 | cmd->stop_arg = 0; | |
1680 | err++; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: err=%d, " | |
1685 | "scan_begin_src=%d, scan_begin_arg=%d, convert_src=%d, " | |
1686 | "convert_arg=%d\n", dev->minor, err, cmd->scan_begin_src, | |
1687 | cmd->scan_begin_arg, cmd->convert_src, cmd->convert_arg); | |
1688 | ||
1689 | if (err) | |
1690 | return 3; | |
1691 | ||
1692 | return 0; | |
1693 | } | |
1694 | ||
1695 | static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s) | |
1696 | { | |
1697 | struct comedi_cmd *cmd = &s->async->cmd; | |
1698 | unsigned int chan, gain; | |
1699 | int i, ret; | |
1700 | struct usbduxsub *this_usbduxsub = dev->private; | |
1701 | ||
1702 | if (!this_usbduxsub) | |
1703 | return -EFAULT; | |
1704 | ||
1705 | down(&this_usbduxsub->sem); | |
1706 | if (!(this_usbduxsub->probed)) { | |
1707 | up(&this_usbduxsub->sem); | |
1708 | return -ENODEV; | |
1709 | } | |
1710 | dev_dbg(&this_usbduxsub->interface->dev, | |
1711 | "comedi%d: %s\n", dev->minor, __func__); | |
1712 | ||
3ee0206b | 1713 | /* set current channel of the running acquisition to zero */ |
dd89e20d BP |
1714 | s->async->cur_chan = 0; |
1715 | for (i = 0; i < cmd->chanlist_len; ++i) { | |
1716 | chan = CR_CHAN(cmd->chanlist[i]); | |
1717 | gain = CR_RANGE(cmd->chanlist[i]); | |
1718 | if (i >= NUMOUTCHANNELS) { | |
1719 | dev_err(&this_usbduxsub->interface->dev, | |
1720 | "comedi%d: %s: channel list too long\n", | |
1721 | dev->minor, __func__); | |
1722 | break; | |
1723 | } | |
1724 | this_usbduxsub->dac_commands[i] = chan; | |
1725 | dev_dbg(&this_usbduxsub->interface->dev, | |
1726 | "comedi%d: dac command for ch %d is %x\n", | |
1727 | dev->minor, i, this_usbduxsub->dac_commands[i]); | |
1728 | } | |
1729 | ||
1730 | /* we count in steps of 1ms (125us) */ | |
1731 | /* 125us mode not used yet */ | |
1732 | if (0) { /* (this_usbduxsub->high_speed) */ | |
1733 | /* 125us */ | |
1734 | /* timing of the conversion itself: every 125 us */ | |
1735 | this_usbduxsub->ao_timer = cmd->convert_arg / 125000; | |
1736 | } else { | |
1737 | /* 1ms */ | |
1738 | /* timing of the scan: we get all channels at once */ | |
1739 | this_usbduxsub->ao_timer = cmd->scan_begin_arg / 1000000; | |
1740 | dev_dbg(&this_usbduxsub->interface->dev, | |
1741 | "comedi%d: scan_begin_src=%d, scan_begin_arg=%d, " | |
1742 | "convert_src=%d, convert_arg=%d\n", dev->minor, | |
1743 | cmd->scan_begin_src, cmd->scan_begin_arg, | |
1744 | cmd->convert_src, cmd->convert_arg); | |
1745 | dev_dbg(&this_usbduxsub->interface->dev, | |
1746 | "comedi%d: ao_timer=%d (ms)\n", | |
1747 | dev->minor, this_usbduxsub->ao_timer); | |
1748 | if (this_usbduxsub->ao_timer < 1) { | |
1749 | dev_err(&this_usbduxsub->interface->dev, | |
1750 | "comedi%d: usbdux: ao_timer=%d, " | |
1751 | "scan_begin_arg=%d. " | |
1752 | "Not properly tested by cmdtest?\n", | |
1753 | dev->minor, this_usbduxsub->ao_timer, | |
1754 | cmd->scan_begin_arg); | |
1755 | up(&this_usbduxsub->sem); | |
1756 | return -EINVAL; | |
1757 | } | |
1758 | } | |
1759 | this_usbduxsub->ao_counter = this_usbduxsub->ao_timer; | |
1760 | ||
1761 | if (cmd->stop_src == TRIG_COUNT) { | |
3ee0206b | 1762 | /* not continuous */ |
dd89e20d BP |
1763 | /* counter */ |
1764 | /* high speed also scans everything at once */ | |
1765 | if (0) { /* (this_usbduxsub->high_speed) */ | |
1766 | this_usbduxsub->ao_sample_count = | |
1767 | (cmd->stop_arg) * (cmd->scan_end_arg); | |
1768 | } else { | |
1769 | /* there's no scan as the scan has been */ | |
1770 | /* perf inside the FX2 */ | |
1771 | /* data arrives as one packet */ | |
1772 | this_usbduxsub->ao_sample_count = cmd->stop_arg; | |
1773 | } | |
3ee0206b | 1774 | this_usbduxsub->ao_continuous = 0; |
dd89e20d | 1775 | } else { |
3ee0206b AG |
1776 | /* continuous acquisition */ |
1777 | this_usbduxsub->ao_continuous = 1; | |
dd89e20d BP |
1778 | this_usbduxsub->ao_sample_count = 0; |
1779 | } | |
1780 | ||
1781 | if (cmd->start_src == TRIG_NOW) { | |
1782 | /* enable this acquisition operation */ | |
1783 | this_usbduxsub->ao_cmd_running = 1; | |
1784 | ret = usbduxsub_submit_OutURBs(this_usbduxsub); | |
1785 | if (ret < 0) { | |
1786 | this_usbduxsub->ao_cmd_running = 0; | |
1787 | /* fixme: unlink here?? */ | |
1788 | up(&this_usbduxsub->sem); | |
1789 | return ret; | |
1790 | } | |
1791 | s->async->inttrig = NULL; | |
1792 | } else { | |
1793 | /* TRIG_INT */ | |
1794 | /* submit the urbs later */ | |
1795 | /* wait for an internal signal */ | |
1796 | s->async->inttrig = usbdux_ao_inttrig; | |
1797 | } | |
1798 | ||
1799 | up(&this_usbduxsub->sem); | |
1800 | return 0; | |
1801 | } | |
1802 | ||
1803 | static int usbdux_dio_insn_config(struct comedi_device *dev, | |
1804 | struct comedi_subdevice *s, | |
1805 | struct comedi_insn *insn, unsigned int *data) | |
1806 | { | |
1807 | int chan = CR_CHAN(insn->chanspec); | |
1808 | ||
1809 | /* The input or output configuration of each digital line is | |
1810 | * configured by a special insn_config instruction. chanspec | |
1811 | * contains the channel to be changed, and data[0] contains the | |
1812 | * value COMEDI_INPUT or COMEDI_OUTPUT. */ | |
1813 | ||
1814 | switch (data[0]) { | |
1815 | case INSN_CONFIG_DIO_OUTPUT: | |
1816 | s->io_bits |= 1 << chan; /* 1 means Out */ | |
1817 | break; | |
1818 | case INSN_CONFIG_DIO_INPUT: | |
1819 | s->io_bits &= ~(1 << chan); | |
1820 | break; | |
1821 | case INSN_CONFIG_DIO_QUERY: | |
1822 | data[1] = | |
1823 | (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT; | |
1824 | break; | |
1825 | default: | |
1826 | return -EINVAL; | |
1827 | break; | |
1828 | } | |
1829 | /* we don't tell the firmware here as it would take 8 frames */ | |
1830 | /* to submit the information. We do it in the insn_bits. */ | |
1831 | return insn->n; | |
1832 | } | |
1833 | ||
1834 | static int usbdux_dio_insn_bits(struct comedi_device *dev, | |
1835 | struct comedi_subdevice *s, | |
1836 | struct comedi_insn *insn, | |
1837 | unsigned int *data) | |
1838 | { | |
1839 | ||
1840 | struct usbduxsub *this_usbduxsub = dev->private; | |
1841 | int err; | |
1842 | ||
1843 | if (!this_usbduxsub) | |
1844 | return -EFAULT; | |
1845 | ||
1846 | if (insn->n != 2) | |
1847 | return -EINVAL; | |
1848 | ||
1849 | down(&this_usbduxsub->sem); | |
1850 | ||
1851 | if (!(this_usbduxsub->probed)) { | |
1852 | up(&this_usbduxsub->sem); | |
1853 | return -ENODEV; | |
1854 | } | |
1855 | ||
1856 | /* The insn data is a mask in data[0] and the new data | |
1857 | * in data[1], each channel cooresponding to a bit. */ | |
1858 | s->state &= ~data[0]; | |
1859 | s->state |= data[0] & data[1]; | |
1860 | /* The commands are 8 bits wide */ | |
1861 | this_usbduxsub->dux_commands[1] = (s->io_bits) & 0x000000FF; | |
1862 | this_usbduxsub->dux_commands[4] = (s->state) & 0x000000FF; | |
1863 | this_usbduxsub->dux_commands[2] = ((s->io_bits) & 0x0000FF00) >> 8; | |
1864 | this_usbduxsub->dux_commands[5] = ((s->state) & 0x0000FF00) >> 8; | |
1865 | this_usbduxsub->dux_commands[3] = ((s->io_bits) & 0x00FF0000) >> 16; | |
1866 | this_usbduxsub->dux_commands[6] = ((s->state) & 0x00FF0000) >> 16; | |
1867 | ||
1868 | /* This command also tells the firmware to return */ | |
1869 | /* the digital input lines */ | |
1870 | err = send_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND); | |
1871 | if (err < 0) { | |
1872 | up(&this_usbduxsub->sem); | |
1873 | return err; | |
1874 | } | |
1875 | err = receive_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND); | |
1876 | if (err < 0) { | |
1877 | up(&this_usbduxsub->sem); | |
1878 | return err; | |
1879 | } | |
1880 | ||
1881 | data[1] = (((unsigned int)(this_usbduxsub->insnBuffer[1]))&0xff) | | |
1882 | ((((unsigned int)(this_usbduxsub->insnBuffer[2]))&0xff) << 8) | | |
1883 | ((((unsigned int)(this_usbduxsub->insnBuffer[3]))&0xff) << 16); | |
1884 | ||
1885 | s->state = data[1]; | |
1886 | ||
1887 | up(&this_usbduxsub->sem); | |
1888 | return 2; | |
1889 | } | |
1890 | ||
1891 | /***********************************/ | |
1892 | /* PWM */ | |
1893 | ||
1894 | static int usbduxsub_unlink_PwmURBs(struct usbduxsub *usbduxsub_tmp) | |
1895 | { | |
1896 | int err = 0; | |
1897 | ||
1898 | if (usbduxsub_tmp && usbduxsub_tmp->urbPwm) { | |
1899 | if (usbduxsub_tmp->urbPwm) | |
1900 | usb_kill_urb(usbduxsub_tmp->urbPwm); | |
1901 | dev_dbg(&usbduxsub_tmp->interface->dev, | |
1902 | "comedi: unlinked PwmURB: res=%d\n", err); | |
1903 | } | |
1904 | return err; | |
1905 | } | |
1906 | ||
1907 | /* This cancels a running acquisition operation | |
1908 | * in any context. | |
1909 | */ | |
1910 | static int usbdux_pwm_stop(struct usbduxsub *this_usbduxsub, int do_unlink) | |
1911 | { | |
1912 | int ret = 0; | |
1913 | ||
1914 | if (!this_usbduxsub) | |
1915 | return -EFAULT; | |
1916 | ||
1917 | dev_dbg(&this_usbduxsub->interface->dev, "comedi: %s\n", __func__); | |
1918 | if (do_unlink) | |
1919 | ret = usbduxsub_unlink_PwmURBs(this_usbduxsub); | |
1920 | ||
1921 | this_usbduxsub->pwm_cmd_running = 0; | |
1922 | ||
1923 | return ret; | |
1924 | } | |
1925 | ||
1926 | /* force unlink - is called by comedi */ | |
1927 | static int usbdux_pwm_cancel(struct comedi_device *dev, | |
1928 | struct comedi_subdevice *s) | |
1929 | { | |
1930 | struct usbduxsub *this_usbduxsub = dev->private; | |
1931 | int res = 0; | |
1932 | ||
1933 | /* unlink only if it is really running */ | |
1934 | res = usbdux_pwm_stop(this_usbduxsub, this_usbduxsub->pwm_cmd_running); | |
1935 | ||
1936 | dev_dbg(&this_usbduxsub->interface->dev, | |
1937 | "comedi %d: sending pwm off command to the usb device.\n", | |
1938 | dev->minor); | |
1939 | res = send_dux_commands(this_usbduxsub, SENDPWMOFF); | |
1940 | if (res < 0) | |
1941 | return res; | |
1942 | ||
1943 | return res; | |
1944 | } | |
1945 | ||
1946 | static void usbduxsub_pwm_irq(struct urb *urb) | |
1947 | { | |
1948 | int ret; | |
1949 | struct usbduxsub *this_usbduxsub; | |
1950 | struct comedi_device *this_comedidev; | |
1951 | struct comedi_subdevice *s; | |
1952 | ||
1953 | /* printk(KERN_DEBUG "PWM: IRQ\n"); */ | |
1954 | ||
1955 | /* the context variable points to the subdevice */ | |
1956 | this_comedidev = urb->context; | |
1957 | /* the private structure of the subdevice is struct usbduxsub */ | |
1958 | this_usbduxsub = this_comedidev->private; | |
1959 | ||
1960 | s = this_comedidev->subdevices + SUBDEV_DA; | |
1961 | ||
1962 | switch (urb->status) { | |
1963 | case 0: | |
1964 | /* success */ | |
1965 | break; | |
1966 | ||
1967 | case -ECONNRESET: | |
1968 | case -ENOENT: | |
1969 | case -ESHUTDOWN: | |
1970 | case -ECONNABORTED: | |
1971 | /* | |
1972 | * after an unlink command, unplug, ... etc | |
1973 | * no unlink needed here. Already shutting down. | |
1974 | */ | |
1975 | if (this_usbduxsub->pwm_cmd_running) | |
1976 | usbdux_pwm_stop(this_usbduxsub, 0); | |
1977 | ||
1978 | return; | |
1979 | ||
1980 | default: | |
1981 | /* a real error */ | |
1982 | if (this_usbduxsub->pwm_cmd_running) { | |
1983 | dev_err(&this_usbduxsub->interface->dev, | |
1984 | "comedi_: Non-zero urb status received in " | |
1985 | "pwm intr context: %d\n", urb->status); | |
1986 | usbdux_pwm_stop(this_usbduxsub, 0); | |
1987 | } | |
1988 | return; | |
1989 | } | |
1990 | ||
1991 | /* are we actually running? */ | |
1992 | if (!(this_usbduxsub->pwm_cmd_running)) | |
1993 | return; | |
1994 | ||
1995 | urb->transfer_buffer_length = this_usbduxsub->sizePwmBuf; | |
1996 | urb->dev = this_usbduxsub->usbdev; | |
1997 | urb->status = 0; | |
1998 | if (this_usbduxsub->pwm_cmd_running) { | |
1999 | ret = usb_submit_urb(urb, GFP_ATOMIC); | |
2000 | if (ret < 0) { | |
2001 | dev_err(&this_usbduxsub->interface->dev, | |
2002 | "comedi_: pwm urb resubm failed in int-cont. " | |
2003 | "ret=%d", ret); | |
2004 | if (ret == EL2NSYNC) | |
2005 | dev_err(&this_usbduxsub->interface->dev, | |
2006 | "buggy USB host controller or bug in " | |
2007 | "IRQ handling!\n"); | |
2008 | ||
2009 | /* don't do an unlink here */ | |
2010 | usbdux_pwm_stop(this_usbduxsub, 0); | |
2011 | } | |
2012 | } | |
2013 | } | |
2014 | ||
2015 | static int usbduxsub_submit_PwmURBs(struct usbduxsub *usbduxsub) | |
2016 | { | |
2017 | int errFlag; | |
2018 | ||
2019 | if (!usbduxsub) | |
2020 | return -EFAULT; | |
2021 | ||
2022 | dev_dbg(&usbduxsub->interface->dev, "comedi_: submitting pwm-urb\n"); | |
2023 | ||
2024 | /* in case of a resubmission after an unlink... */ | |
2025 | usb_fill_bulk_urb(usbduxsub->urbPwm, | |
2026 | usbduxsub->usbdev, | |
2027 | usb_sndbulkpipe(usbduxsub->usbdev, PWM_EP), | |
2028 | usbduxsub->urbPwm->transfer_buffer, | |
2029 | usbduxsub->sizePwmBuf, usbduxsub_pwm_irq, | |
2030 | usbduxsub->comedidev); | |
2031 | ||
2032 | errFlag = usb_submit_urb(usbduxsub->urbPwm, GFP_ATOMIC); | |
2033 | if (errFlag) { | |
2034 | dev_err(&usbduxsub->interface->dev, | |
2035 | "comedi_: usbduxsigma: pwm: usb_submit_urb error %d\n", | |
2036 | errFlag); | |
2037 | return errFlag; | |
2038 | } | |
2039 | return 0; | |
2040 | } | |
2041 | ||
2042 | static int usbdux_pwm_period(struct comedi_device *dev, | |
2043 | struct comedi_subdevice *s, unsigned int period) | |
2044 | { | |
2045 | struct usbduxsub *this_usbduxsub = dev->private; | |
2046 | int fx2delay = 255; | |
2047 | ||
2048 | if (period < MIN_PWM_PERIOD) { | |
2049 | dev_err(&this_usbduxsub->interface->dev, | |
2050 | "comedi%d: illegal period setting for pwm.\n", | |
2051 | dev->minor); | |
2052 | return -EAGAIN; | |
2053 | } else { | |
2054 | fx2delay = period / ((int)(6 * 512 * (1.0 / 0.033))) - 6; | |
2055 | if (fx2delay > 255) { | |
2056 | dev_err(&this_usbduxsub->interface->dev, | |
2057 | "comedi%d: period %d for pwm is too low.\n", | |
2058 | dev->minor, period); | |
2059 | return -EAGAIN; | |
2060 | } | |
2061 | } | |
2062 | this_usbduxsub->pwmDelay = fx2delay; | |
2063 | this_usbduxsub->pwmPeriod = period; | |
2064 | dev_dbg(&this_usbduxsub->interface->dev, "%s: frequ=%d, period=%d\n", | |
2065 | __func__, period, fx2delay); | |
2066 | return 0; | |
2067 | } | |
2068 | ||
2069 | /* is called from insn so there's no need to do all the sanity checks */ | |
2070 | static int usbdux_pwm_start(struct comedi_device *dev, | |
2071 | struct comedi_subdevice *s) | |
2072 | { | |
2073 | int ret, i; | |
2074 | struct usbduxsub *this_usbduxsub = dev->private; | |
2075 | ||
2076 | dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: %s\n", | |
2077 | dev->minor, __func__); | |
2078 | ||
2079 | if (this_usbduxsub->pwm_cmd_running) { | |
2080 | /* already running */ | |
2081 | return 0; | |
2082 | } | |
2083 | ||
2084 | this_usbduxsub->dux_commands[1] = ((uint8_t) this_usbduxsub->pwmDelay); | |
2085 | ret = send_dux_commands(this_usbduxsub, SENDPWMON); | |
2086 | if (ret < 0) | |
2087 | return ret; | |
2088 | ||
2089 | /* initialise the buffer */ | |
2090 | for (i = 0; i < this_usbduxsub->sizePwmBuf; i++) | |
2091 | ((char *)(this_usbduxsub->urbPwm->transfer_buffer))[i] = 0; | |
2092 | ||
2093 | this_usbduxsub->pwm_cmd_running = 1; | |
2094 | ret = usbduxsub_submit_PwmURBs(this_usbduxsub); | |
2095 | if (ret < 0) { | |
2096 | this_usbduxsub->pwm_cmd_running = 0; | |
2097 | return ret; | |
2098 | } | |
2099 | return 0; | |
2100 | } | |
2101 | ||
2102 | /* generates the bit pattern for PWM with the optional sign bit */ | |
2103 | static int usbdux_pwm_pattern(struct comedi_device *dev, | |
2104 | struct comedi_subdevice *s, int channel, | |
2105 | unsigned int value, unsigned int sign) | |
2106 | { | |
2107 | struct usbduxsub *this_usbduxsub = dev->private; | |
2108 | int i, szbuf; | |
2109 | char *pBuf; | |
2110 | char pwm_mask; | |
2111 | char sgn_mask; | |
2112 | char c; | |
2113 | ||
2114 | if (!this_usbduxsub) | |
2115 | return -EFAULT; | |
2116 | ||
2117 | /* this is the DIO bit which carries the PWM data */ | |
2118 | pwm_mask = (1 << channel); | |
2119 | /* this is the DIO bit which carries the optional direction bit */ | |
2120 | sgn_mask = (16 << channel); | |
2121 | /* this is the buffer which will be filled with the with bit */ | |
2122 | /* pattern for one period */ | |
2123 | szbuf = this_usbduxsub->sizePwmBuf; | |
2124 | pBuf = (char *)(this_usbduxsub->urbPwm->transfer_buffer); | |
2125 | for (i = 0; i < szbuf; i++) { | |
2126 | c = *pBuf; | |
2127 | /* reset bits */ | |
2128 | c = c & (~pwm_mask); | |
2129 | /* set the bit as long as the index is lower than the value */ | |
2130 | if (i < value) | |
2131 | c = c | pwm_mask; | |
2132 | /* set the optional sign bit for a relay */ | |
2133 | if (!sign) { | |
2134 | /* positive value */ | |
2135 | c = c & (~sgn_mask); | |
2136 | } else { | |
2137 | /* negative value */ | |
2138 | c = c | sgn_mask; | |
2139 | } | |
2140 | *(pBuf++) = c; | |
2141 | } | |
2142 | return 1; | |
2143 | } | |
2144 | ||
2145 | static int usbdux_pwm_write(struct comedi_device *dev, | |
2146 | struct comedi_subdevice *s, | |
2147 | struct comedi_insn *insn, unsigned int *data) | |
2148 | { | |
2149 | struct usbduxsub *this_usbduxsub = dev->private; | |
2150 | ||
2151 | if (!this_usbduxsub) | |
2152 | return -EFAULT; | |
2153 | ||
2154 | if ((insn->n) != 1) { | |
2155 | /* | |
2156 | * doesn't make sense to have more than one value here because | |
2157 | * it would just overwrite the PWM buffer a couple of times | |
2158 | */ | |
2159 | return -EINVAL; | |
2160 | } | |
2161 | ||
2162 | /* | |
2163 | * the sign is set via a special INSN only, this gives us 8 bits for | |
2164 | * normal operation | |
2165 | * relay sign 0 by default | |
2166 | */ | |
2167 | return usbdux_pwm_pattern(dev, s, CR_CHAN(insn->chanspec), data[0], 0); | |
2168 | } | |
2169 | ||
2170 | static int usbdux_pwm_read(struct comedi_device *x1, | |
2171 | struct comedi_subdevice *x2, struct comedi_insn *x3, | |
2172 | unsigned int *x4) | |
2173 | { | |
2174 | /* not needed */ | |
2175 | return -EINVAL; | |
2176 | }; | |
2177 | ||
2178 | /* switches on/off PWM */ | |
2179 | static int usbdux_pwm_config(struct comedi_device *dev, | |
2180 | struct comedi_subdevice *s, | |
2181 | struct comedi_insn *insn, unsigned int *data) | |
2182 | { | |
2183 | struct usbduxsub *this_usbduxsub = dev->private; | |
2184 | switch (data[0]) { | |
2185 | case INSN_CONFIG_ARM: | |
2186 | /* switch it on */ | |
2187 | dev_dbg(&this_usbduxsub->interface->dev, | |
2188 | "comedi%d: %s: pwm on\n", dev->minor, __func__); | |
2189 | /* | |
2190 | * if not zero the PWM is limited to a certain time which is | |
2191 | * not supported here | |
2192 | */ | |
2193 | if (data[1] != 0) | |
2194 | return -EINVAL; | |
2195 | return usbdux_pwm_start(dev, s); | |
2196 | case INSN_CONFIG_DISARM: | |
2197 | dev_dbg(&this_usbduxsub->interface->dev, | |
2198 | "comedi%d: %s: pwm off\n", dev->minor, __func__); | |
2199 | return usbdux_pwm_cancel(dev, s); | |
2200 | case INSN_CONFIG_GET_PWM_STATUS: | |
2201 | /* | |
2202 | * to check if the USB transmission has failed or in case PWM | |
2203 | * was limited to n cycles to check if it has terminated | |
2204 | */ | |
2205 | data[1] = this_usbduxsub->pwm_cmd_running; | |
2206 | return 0; | |
2207 | case INSN_CONFIG_PWM_SET_PERIOD: | |
2208 | dev_dbg(&this_usbduxsub->interface->dev, | |
2209 | "comedi%d: %s: setting period\n", dev->minor, | |
2210 | __func__); | |
2211 | return usbdux_pwm_period(dev, s, data[1]); | |
2212 | case INSN_CONFIG_PWM_GET_PERIOD: | |
2213 | data[1] = this_usbduxsub->pwmPeriod; | |
2214 | return 0; | |
2215 | case INSN_CONFIG_PWM_SET_H_BRIDGE: | |
2216 | /* value in the first byte and the sign in the second for a | |
2217 | relay */ | |
2218 | return usbdux_pwm_pattern(dev, s, | |
2219 | /* the channel number */ | |
2220 | CR_CHAN(insn->chanspec), | |
2221 | /* actual PWM data */ | |
2222 | data[1], | |
2223 | /* just a sign */ | |
2224 | (data[2] != 0)); | |
2225 | case INSN_CONFIG_PWM_GET_H_BRIDGE: | |
2226 | /* values are not kept in this driver, nothing to return */ | |
2227 | return -EINVAL; | |
2228 | } | |
2229 | return -EINVAL; | |
2230 | } | |
2231 | ||
2232 | /* end of PWM */ | |
2233 | /*****************************************************************/ | |
2234 | ||
2235 | static void tidy_up(struct usbduxsub *usbduxsub_tmp) | |
2236 | { | |
2237 | int i; | |
2238 | ||
2239 | if (!usbduxsub_tmp) | |
2240 | return; | |
2241 | dev_dbg(&usbduxsub_tmp->interface->dev, "comedi_: tiding up\n"); | |
2242 | ||
2243 | /* shows the usb subsystem that the driver is down */ | |
2244 | if (usbduxsub_tmp->interface) | |
2245 | usb_set_intfdata(usbduxsub_tmp->interface, NULL); | |
2246 | ||
2247 | usbduxsub_tmp->probed = 0; | |
2248 | ||
2249 | if (usbduxsub_tmp->urbIn) { | |
2250 | if (usbduxsub_tmp->ai_cmd_running) { | |
2251 | usbduxsub_tmp->ai_cmd_running = 0; | |
2252 | usbduxsub_unlink_InURBs(usbduxsub_tmp); | |
2253 | } | |
2254 | for (i = 0; i < usbduxsub_tmp->numOfInBuffers; i++) { | |
2255 | kfree(usbduxsub_tmp->urbIn[i]->transfer_buffer); | |
2256 | usbduxsub_tmp->urbIn[i]->transfer_buffer = NULL; | |
2257 | usb_kill_urb(usbduxsub_tmp->urbIn[i]); | |
2258 | usb_free_urb(usbduxsub_tmp->urbIn[i]); | |
2259 | usbduxsub_tmp->urbIn[i] = NULL; | |
2260 | } | |
2261 | kfree(usbduxsub_tmp->urbIn); | |
2262 | usbduxsub_tmp->urbIn = NULL; | |
2263 | } | |
2264 | if (usbduxsub_tmp->urbOut) { | |
2265 | if (usbduxsub_tmp->ao_cmd_running) { | |
2266 | usbduxsub_tmp->ao_cmd_running = 0; | |
2267 | usbduxsub_unlink_OutURBs(usbduxsub_tmp); | |
2268 | } | |
2269 | for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) { | |
2270 | if (usbduxsub_tmp->urbOut[i]->transfer_buffer) { | |
2271 | kfree(usbduxsub_tmp-> | |
2272 | urbOut[i]->transfer_buffer); | |
2273 | usbduxsub_tmp->urbOut[i]->transfer_buffer = | |
2274 | NULL; | |
2275 | } | |
2276 | if (usbduxsub_tmp->urbOut[i]) { | |
2277 | usb_kill_urb(usbduxsub_tmp->urbOut[i]); | |
2278 | usb_free_urb(usbduxsub_tmp->urbOut[i]); | |
2279 | usbduxsub_tmp->urbOut[i] = NULL; | |
2280 | } | |
2281 | } | |
2282 | kfree(usbduxsub_tmp->urbOut); | |
2283 | usbduxsub_tmp->urbOut = NULL; | |
2284 | } | |
2285 | if (usbduxsub_tmp->urbPwm) { | |
2286 | if (usbduxsub_tmp->pwm_cmd_running) { | |
2287 | usbduxsub_tmp->pwm_cmd_running = 0; | |
2288 | usbduxsub_unlink_PwmURBs(usbduxsub_tmp); | |
2289 | } | |
2290 | kfree(usbduxsub_tmp->urbPwm->transfer_buffer); | |
2291 | usbduxsub_tmp->urbPwm->transfer_buffer = NULL; | |
2292 | usb_kill_urb(usbduxsub_tmp->urbPwm); | |
2293 | usb_free_urb(usbduxsub_tmp->urbPwm); | |
2294 | usbduxsub_tmp->urbPwm = NULL; | |
2295 | } | |
2296 | kfree(usbduxsub_tmp->inBuffer); | |
2297 | usbduxsub_tmp->inBuffer = NULL; | |
2298 | kfree(usbduxsub_tmp->insnBuffer); | |
2299 | usbduxsub_tmp->insnBuffer = NULL; | |
2300 | kfree(usbduxsub_tmp->outBuffer); | |
2301 | usbduxsub_tmp->outBuffer = NULL; | |
2302 | kfree(usbduxsub_tmp->dac_commands); | |
2303 | usbduxsub_tmp->dac_commands = NULL; | |
2304 | kfree(usbduxsub_tmp->dux_commands); | |
2305 | usbduxsub_tmp->dux_commands = NULL; | |
2306 | usbduxsub_tmp->ai_cmd_running = 0; | |
2307 | usbduxsub_tmp->ao_cmd_running = 0; | |
2308 | usbduxsub_tmp->pwm_cmd_running = 0; | |
2309 | } | |
2310 | ||
2311 | static void usbdux_firmware_request_complete_handler(const struct firmware *fw, | |
2312 | void *context) | |
2313 | { | |
2314 | struct usbduxsub *usbduxsub_tmp = context; | |
2315 | struct usb_device *usbdev = usbduxsub_tmp->usbdev; | |
2316 | int ret; | |
2317 | ||
2318 | if (fw == NULL) { | |
2319 | dev_err(&usbdev->dev, | |
2320 | "Firmware complete handler without firmware!\n"); | |
2321 | return; | |
2322 | } | |
2323 | ||
2324 | /* | |
2325 | * we need to upload the firmware here because fw will be | |
2326 | * freed once we've left this function | |
2327 | */ | |
2328 | ret = firmwareUpload(usbduxsub_tmp, fw->data, fw->size); | |
2329 | ||
2330 | if (ret) { | |
2331 | dev_err(&usbdev->dev, | |
2332 | "Could not upload firmware (err=%d)\n", ret); | |
2333 | goto out; | |
2334 | } | |
2335 | comedi_usb_auto_config(usbdev, BOARDNAME); | |
2336 | out: | |
2337 | release_firmware(fw); | |
2338 | } | |
2339 | ||
2340 | /* allocate memory for the urbs and initialise them */ | |
2341 | static int usbduxsigma_probe(struct usb_interface *uinterf, | |
2342 | const struct usb_device_id *id) | |
2343 | { | |
2344 | struct usb_device *udev = interface_to_usbdev(uinterf); | |
2345 | struct device *dev = &uinterf->dev; | |
2346 | int i; | |
2347 | int index; | |
2348 | int ret; | |
2349 | ||
2350 | dev_dbg(dev, "comedi_: usbdux_: " | |
2351 | "finding a free structure for the usb-device\n"); | |
2352 | ||
2353 | down(&start_stop_sem); | |
2354 | /* look for a free place in the usbdux array */ | |
2355 | index = -1; | |
2356 | for (i = 0; i < NUMUSBDUX; i++) { | |
2357 | if (!(usbduxsub[i].probed)) { | |
2358 | index = i; | |
2359 | break; | |
2360 | } | |
2361 | } | |
2362 | ||
2363 | /* no more space */ | |
2364 | if (index == -1) { | |
2365 | dev_err(dev, "Too many usbduxsigma-devices connected.\n"); | |
2366 | up(&start_stop_sem); | |
2367 | return -EMFILE; | |
2368 | } | |
2369 | dev_dbg(dev, "comedi_: usbdux: " | |
2370 | "usbduxsub[%d] is ready to connect to comedi.\n", index); | |
2371 | ||
2372 | sema_init(&(usbduxsub[index].sem), 1); | |
2373 | /* save a pointer to the usb device */ | |
2374 | usbduxsub[index].usbdev = udev; | |
2375 | ||
2376 | /* save the interface itself */ | |
2377 | usbduxsub[index].interface = uinterf; | |
2378 | /* get the interface number from the interface */ | |
2379 | usbduxsub[index].ifnum = uinterf->altsetting->desc.bInterfaceNumber; | |
2380 | /* hand the private data over to the usb subsystem */ | |
2381 | /* will be needed for disconnect */ | |
2382 | usb_set_intfdata(uinterf, &(usbduxsub[index])); | |
2383 | ||
2384 | dev_dbg(dev, "comedi_: usbdux: ifnum=%d\n", usbduxsub[index].ifnum); | |
2385 | ||
2386 | /* test if it is high speed (USB 2.0) */ | |
2387 | usbduxsub[index].high_speed = | |
2388 | (usbduxsub[index].usbdev->speed == USB_SPEED_HIGH); | |
2389 | ||
2390 | /* create space for the commands of the DA converter */ | |
2391 | usbduxsub[index].dac_commands = kzalloc(NUMOUTCHANNELS, GFP_KERNEL); | |
2392 | if (!usbduxsub[index].dac_commands) { | |
2393 | dev_err(dev, "comedi_: usbduxsigma: " | |
2394 | "error alloc space for dac commands\n"); | |
2395 | tidy_up(&(usbduxsub[index])); | |
2396 | up(&start_stop_sem); | |
2397 | return -ENOMEM; | |
2398 | } | |
2399 | /* create space for the commands going to the usb device */ | |
2400 | usbduxsub[index].dux_commands = kzalloc(SIZEOFDUXBUFFER, GFP_KERNEL); | |
2401 | if (!usbduxsub[index].dux_commands) { | |
2402 | dev_err(dev, "comedi_: usbduxsigma: " | |
2403 | "error alloc space for dux commands\n"); | |
2404 | tidy_up(&(usbduxsub[index])); | |
2405 | up(&start_stop_sem); | |
2406 | return -ENOMEM; | |
2407 | } | |
2408 | /* create space for the in buffer and set it to zero */ | |
2409 | usbduxsub[index].inBuffer = kzalloc(SIZEINBUF, GFP_KERNEL); | |
2410 | if (!(usbduxsub[index].inBuffer)) { | |
2411 | dev_err(dev, "comedi_: usbduxsigma: " | |
2412 | "could not alloc space for inBuffer\n"); | |
2413 | tidy_up(&(usbduxsub[index])); | |
2414 | up(&start_stop_sem); | |
2415 | return -ENOMEM; | |
2416 | } | |
2417 | /* create space of the instruction buffer */ | |
2418 | usbduxsub[index].insnBuffer = kzalloc(SIZEINSNBUF, GFP_KERNEL); | |
2419 | if (!(usbduxsub[index].insnBuffer)) { | |
2420 | dev_err(dev, "comedi_: usbduxsigma: " | |
2421 | "could not alloc space for insnBuffer\n"); | |
2422 | tidy_up(&(usbduxsub[index])); | |
2423 | up(&start_stop_sem); | |
2424 | return -ENOMEM; | |
2425 | } | |
2426 | /* create space for the outbuffer */ | |
2427 | usbduxsub[index].outBuffer = kzalloc(SIZEOUTBUF, GFP_KERNEL); | |
2428 | if (!(usbduxsub[index].outBuffer)) { | |
2429 | dev_err(dev, "comedi_: usbduxsigma: " | |
2430 | "could not alloc space for outBuffer\n"); | |
2431 | tidy_up(&(usbduxsub[index])); | |
2432 | up(&start_stop_sem); | |
2433 | return -ENOMEM; | |
2434 | } | |
2435 | /* setting to alternate setting 3: enabling iso ep and bulk ep. */ | |
2436 | i = usb_set_interface(usbduxsub[index].usbdev, | |
2437 | usbduxsub[index].ifnum, 3); | |
2438 | if (i < 0) { | |
2439 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2440 | "could not set alternate setting 3 in high speed.\n", | |
2441 | index); | |
2442 | tidy_up(&(usbduxsub[index])); | |
2443 | up(&start_stop_sem); | |
2444 | return -ENODEV; | |
2445 | } | |
2446 | if (usbduxsub[index].high_speed) | |
2447 | usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSHIGH; | |
2448 | else | |
2449 | usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSFULL; | |
2450 | ||
2451 | usbduxsub[index].urbIn = | |
2452 | kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfInBuffers, | |
2453 | GFP_KERNEL); | |
2454 | if (!(usbduxsub[index].urbIn)) { | |
2455 | dev_err(dev, "comedi_: usbduxsigma: " | |
2456 | "Could not alloc. urbIn array\n"); | |
2457 | tidy_up(&(usbduxsub[index])); | |
2458 | up(&start_stop_sem); | |
2459 | return -ENOMEM; | |
2460 | } | |
2461 | for (i = 0; i < usbduxsub[index].numOfInBuffers; i++) { | |
2462 | /* one frame: 1ms */ | |
2463 | usbduxsub[index].urbIn[i] = usb_alloc_urb(1, GFP_KERNEL); | |
2464 | if (usbduxsub[index].urbIn[i] == NULL) { | |
2465 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2466 | "Could not alloc. urb(%d)\n", index, i); | |
2467 | tidy_up(&(usbduxsub[index])); | |
2468 | up(&start_stop_sem); | |
2469 | return -ENOMEM; | |
2470 | } | |
2471 | usbduxsub[index].urbIn[i]->dev = usbduxsub[index].usbdev; | |
2472 | /* will be filled later with a pointer to the comedi-device */ | |
2473 | /* and ONLY then the urb should be submitted */ | |
2474 | usbduxsub[index].urbIn[i]->context = NULL; | |
2475 | usbduxsub[index].urbIn[i]->pipe = | |
2476 | usb_rcvisocpipe(usbduxsub[index].usbdev, ISOINEP); | |
2477 | usbduxsub[index].urbIn[i]->transfer_flags = URB_ISO_ASAP; | |
2478 | usbduxsub[index].urbIn[i]->transfer_buffer = | |
2479 | kzalloc(SIZEINBUF, GFP_KERNEL); | |
2480 | if (!(usbduxsub[index].urbIn[i]->transfer_buffer)) { | |
2481 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2482 | "could not alloc. transb.\n", index); | |
2483 | tidy_up(&(usbduxsub[index])); | |
2484 | up(&start_stop_sem); | |
2485 | return -ENOMEM; | |
2486 | } | |
2487 | usbduxsub[index].urbIn[i]->complete = usbduxsub_ai_IsocIrq; | |
2488 | usbduxsub[index].urbIn[i]->number_of_packets = 1; | |
2489 | usbduxsub[index].urbIn[i]->transfer_buffer_length = SIZEINBUF; | |
2490 | usbduxsub[index].urbIn[i]->iso_frame_desc[0].offset = 0; | |
2491 | usbduxsub[index].urbIn[i]->iso_frame_desc[0].length = | |
2492 | SIZEINBUF; | |
2493 | } | |
2494 | ||
2495 | /* out */ | |
2496 | if (usbduxsub[index].high_speed) | |
2497 | usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSHIGH; | |
2498 | else | |
2499 | usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSFULL; | |
2500 | ||
2501 | usbduxsub[index].urbOut = | |
2502 | kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfOutBuffers, | |
2503 | GFP_KERNEL); | |
2504 | if (!(usbduxsub[index].urbOut)) { | |
2505 | dev_err(dev, "comedi_: usbduxsigma: " | |
2506 | "Could not alloc. urbOut array\n"); | |
2507 | tidy_up(&(usbduxsub[index])); | |
2508 | up(&start_stop_sem); | |
2509 | return -ENOMEM; | |
2510 | } | |
2511 | for (i = 0; i < usbduxsub[index].numOfOutBuffers; i++) { | |
2512 | /* one frame: 1ms */ | |
2513 | usbduxsub[index].urbOut[i] = usb_alloc_urb(1, GFP_KERNEL); | |
2514 | if (usbduxsub[index].urbOut[i] == NULL) { | |
2515 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2516 | "Could not alloc. urb(%d)\n", index, i); | |
2517 | tidy_up(&(usbduxsub[index])); | |
2518 | up(&start_stop_sem); | |
2519 | return -ENOMEM; | |
2520 | } | |
2521 | usbduxsub[index].urbOut[i]->dev = usbduxsub[index].usbdev; | |
2522 | /* will be filled later with a pointer to the comedi-device */ | |
2523 | /* and ONLY then the urb should be submitted */ | |
2524 | usbduxsub[index].urbOut[i]->context = NULL; | |
2525 | usbduxsub[index].urbOut[i]->pipe = | |
2526 | usb_sndisocpipe(usbduxsub[index].usbdev, ISOOUTEP); | |
2527 | usbduxsub[index].urbOut[i]->transfer_flags = URB_ISO_ASAP; | |
2528 | usbduxsub[index].urbOut[i]->transfer_buffer = | |
2529 | kzalloc(SIZEOUTBUF, GFP_KERNEL); | |
2530 | if (!(usbduxsub[index].urbOut[i]->transfer_buffer)) { | |
2531 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2532 | "could not alloc. transb.\n", index); | |
2533 | tidy_up(&(usbduxsub[index])); | |
2534 | up(&start_stop_sem); | |
2535 | return -ENOMEM; | |
2536 | } | |
2537 | usbduxsub[index].urbOut[i]->complete = usbduxsub_ao_IsocIrq; | |
2538 | usbduxsub[index].urbOut[i]->number_of_packets = 1; | |
2539 | usbduxsub[index].urbOut[i]->transfer_buffer_length = | |
2540 | SIZEOUTBUF; | |
2541 | usbduxsub[index].urbOut[i]->iso_frame_desc[0].offset = 0; | |
2542 | usbduxsub[index].urbOut[i]->iso_frame_desc[0].length = | |
2543 | SIZEOUTBUF; | |
2544 | if (usbduxsub[index].high_speed) { | |
2545 | /* uframes */ | |
2546 | usbduxsub[index].urbOut[i]->interval = 8; | |
2547 | } else { | |
2548 | /* frames */ | |
2549 | usbduxsub[index].urbOut[i]->interval = 1; | |
2550 | } | |
2551 | } | |
2552 | ||
2553 | /* pwm */ | |
2554 | if (usbduxsub[index].high_speed) { | |
2555 | /* max bulk ep size in high speed */ | |
2556 | usbduxsub[index].sizePwmBuf = 512; | |
2557 | usbduxsub[index].urbPwm = usb_alloc_urb(0, GFP_KERNEL); | |
2558 | if (usbduxsub[index].urbPwm == NULL) { | |
2559 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2560 | "Could not alloc. pwm urb\n", index); | |
2561 | tidy_up(&(usbduxsub[index])); | |
2562 | up(&start_stop_sem); | |
2563 | return -ENOMEM; | |
2564 | } | |
2565 | usbduxsub[index].urbPwm->transfer_buffer = | |
2566 | kzalloc(usbduxsub[index].sizePwmBuf, GFP_KERNEL); | |
2567 | if (!(usbduxsub[index].urbPwm->transfer_buffer)) { | |
2568 | dev_err(dev, "comedi_: usbduxsigma%d: " | |
2569 | "could not alloc. transb. for pwm\n", index); | |
2570 | tidy_up(&(usbduxsub[index])); | |
2571 | up(&start_stop_sem); | |
2572 | return -ENOMEM; | |
2573 | } | |
2574 | } else { | |
2575 | usbduxsub[index].urbPwm = NULL; | |
2576 | usbduxsub[index].sizePwmBuf = 0; | |
2577 | } | |
2578 | ||
2579 | usbduxsub[index].ai_cmd_running = 0; | |
2580 | usbduxsub[index].ao_cmd_running = 0; | |
2581 | usbduxsub[index].pwm_cmd_running = 0; | |
2582 | ||
2583 | /* we've reached the bottom of the function */ | |
2584 | usbduxsub[index].probed = 1; | |
2585 | up(&start_stop_sem); | |
2586 | ||
2587 | ret = request_firmware_nowait(THIS_MODULE, | |
2588 | FW_ACTION_HOTPLUG, | |
2589 | "usbduxsigma_firmware.bin", | |
2590 | &udev->dev, | |
2591 | GFP_KERNEL, | |
2592 | usbduxsub + index, | |
2593 | usbdux_firmware_request_complete_handler | |
2594 | ); | |
2595 | ||
2596 | if (ret) { | |
2597 | dev_err(dev, "Could not load firmware (err=%d)\n", ret); | |
2598 | return ret; | |
2599 | } | |
2600 | ||
2601 | dev_info(dev, "comedi_: successfully initialised.\n"); | |
2602 | /* success */ | |
2603 | return 0; | |
2604 | } | |
2605 | ||
2606 | static void usbduxsigma_disconnect(struct usb_interface *intf) | |
2607 | { | |
2608 | struct usbduxsub *usbduxsub_tmp = usb_get_intfdata(intf); | |
2609 | struct usb_device *udev = interface_to_usbdev(intf); | |
2610 | ||
2611 | if (!usbduxsub_tmp) { | |
2612 | dev_err(&intf->dev, | |
2613 | "comedi_: disconnect called with null pointer.\n"); | |
2614 | return; | |
2615 | } | |
2616 | if (usbduxsub_tmp->usbdev != udev) { | |
2617 | dev_err(&intf->dev, "comedi_: BUG! wrong ptr!\n"); | |
2618 | return; | |
2619 | } | |
2620 | if (usbduxsub_tmp->ai_cmd_running) | |
2621 | /* we are still running a command */ | |
2622 | usbdux_ai_stop(usbduxsub_tmp, 1); | |
2623 | if (usbduxsub_tmp->ao_cmd_running) | |
2624 | /* we are still running a command */ | |
2625 | usbdux_ao_stop(usbduxsub_tmp, 1); | |
2626 | comedi_usb_auto_unconfig(udev); | |
2627 | down(&start_stop_sem); | |
2628 | down(&usbduxsub_tmp->sem); | |
2629 | tidy_up(usbduxsub_tmp); | |
2630 | up(&usbduxsub_tmp->sem); | |
2631 | up(&start_stop_sem); | |
2632 | dev_info(&intf->dev, "comedi_: disconnected from the usb\n"); | |
2633 | } | |
2634 | ||
2635 | /* is called when comedi-config is called */ | |
2636 | static int usbduxsigma_attach(struct comedi_device *dev, | |
2637 | struct comedi_devconfig *it) | |
2638 | { | |
2639 | int ret; | |
2640 | int index; | |
2641 | int i; | |
2642 | struct usbduxsub *udev; | |
2643 | ||
2644 | int offset; | |
2645 | ||
2646 | struct comedi_subdevice *s = NULL; | |
2647 | dev->private = NULL; | |
2648 | ||
2649 | down(&start_stop_sem); | |
2650 | /* find a valid device which has been detected by the probe function of | |
2651 | * the usb */ | |
2652 | index = -1; | |
2653 | for (i = 0; i < NUMUSBDUX; i++) { | |
2654 | if ((usbduxsub[i].probed) && (!usbduxsub[i].attached)) { | |
2655 | index = i; | |
2656 | break; | |
2657 | } | |
2658 | } | |
2659 | ||
2660 | if (index < 0) { | |
2661 | printk(KERN_ERR "comedi%d: usbduxsigma: error: attach failed," | |
2662 | "dev not connected to the usb bus.\n", dev->minor); | |
2663 | up(&start_stop_sem); | |
2664 | return -ENODEV; | |
2665 | } | |
2666 | ||
2667 | udev = &usbduxsub[index]; | |
2668 | down(&udev->sem); | |
2669 | /* pointer back to the corresponding comedi device */ | |
2670 | udev->comedidev = dev; | |
2671 | ||
2672 | /* trying to upload the firmware into the FX2 */ | |
2673 | if (comedi_aux_data(it->options, 0) && | |
2674 | it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) { | |
2675 | firmwareUpload(udev, comedi_aux_data(it->options, 0), | |
2676 | it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]); | |
2677 | } | |
2678 | ||
2679 | dev->board_name = BOARDNAME; | |
2680 | ||
2681 | /* set number of subdevices */ | |
2682 | if (udev->high_speed) { | |
2683 | /* with pwm */ | |
2684 | dev->n_subdevices = 4; | |
2685 | } else { | |
2686 | /* without pwm */ | |
2687 | dev->n_subdevices = 3; | |
2688 | } | |
2689 | ||
2690 | /* allocate space for the subdevices */ | |
2691 | ret = alloc_subdevices(dev, dev->n_subdevices); | |
2692 | if (ret < 0) { | |
2693 | dev_err(&udev->interface->dev, | |
2694 | "comedi%d: no space for subdev\n", dev->minor); | |
2f30866f | 2695 | up(&udev->sem); |
dd89e20d BP |
2696 | up(&start_stop_sem); |
2697 | return ret; | |
2698 | } | |
2699 | ||
2700 | /* private structure is also simply the usb-structure */ | |
2701 | dev->private = udev; | |
2702 | ||
2703 | /* the first subdevice is the A/D converter */ | |
2704 | s = dev->subdevices + SUBDEV_AD; | |
2705 | /* the URBs get the comedi subdevice */ | |
2706 | /* which is responsible for reading */ | |
2707 | /* this is the subdevice which reads data */ | |
2708 | dev->read_subdev = s; | |
2709 | /* the subdevice receives as private structure the */ | |
2710 | /* usb-structure */ | |
2711 | s->private = NULL; | |
2712 | /* analog input */ | |
2713 | s->type = COMEDI_SUBD_AI; | |
2714 | /* readable and ref is to ground, 32 bit wide data! */ | |
2715 | s->subdev_flags = SDF_READABLE | SDF_GROUND | | |
2716 | SDF_CMD_READ | SDF_LSAMPL; | |
2717 | /* 16 A/D channels */ | |
2718 | s->n_chan = NUMCHANNELS; | |
2719 | /* length of the channellist */ | |
2720 | s->len_chanlist = NUMCHANNELS; | |
2721 | /* callback functions */ | |
2722 | s->insn_read = usbdux_ai_insn_read; | |
2723 | s->do_cmdtest = usbdux_ai_cmdtest; | |
2724 | s->do_cmd = usbdux_ai_cmd; | |
2725 | s->cancel = usbdux_ai_cancel; | |
2726 | /* max value from the A/D converter (24bit) */ | |
2727 | s->maxdata = 0x00FFFFFF; | |
2728 | /* range table to convert to physical units */ | |
2729 | s->range_table = (&range_usbdux_ai_range); | |
2730 | ||
2731 | /* analog out */ | |
2732 | s = dev->subdevices + SUBDEV_DA; | |
2733 | /* analog out */ | |
2734 | s->type = COMEDI_SUBD_AO; | |
2735 | /* backward pointer */ | |
2736 | dev->write_subdev = s; | |
2737 | /* the subdevice receives as private structure the */ | |
2738 | /* usb-structure */ | |
2739 | s->private = NULL; | |
2740 | /* are writable */ | |
2741 | s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE; | |
2742 | /* 4 channels */ | |
2743 | s->n_chan = 4; | |
2744 | /* length of the channellist */ | |
2745 | s->len_chanlist = 4; | |
2746 | /* 8 bit resolution */ | |
2747 | s->maxdata = 0x00ff; | |
2748 | /* unipolar range */ | |
2749 | s->range_table = (&range_usbdux_ao_range); | |
2750 | /* callback */ | |
2751 | s->do_cmdtest = usbdux_ao_cmdtest; | |
2752 | s->do_cmd = usbdux_ao_cmd; | |
2753 | s->cancel = usbdux_ao_cancel; | |
2754 | s->insn_read = usbdux_ao_insn_read; | |
2755 | s->insn_write = usbdux_ao_insn_write; | |
2756 | ||
2757 | /* digital I/O */ | |
2758 | s = dev->subdevices + SUBDEV_DIO; | |
2759 | s->type = COMEDI_SUBD_DIO; | |
2760 | s->subdev_flags = SDF_READABLE | SDF_WRITABLE; | |
2761 | /* 8 external and 16 internal channels */ | |
2762 | s->n_chan = 24; | |
2763 | s->maxdata = 1; | |
2764 | s->range_table = (&range_digital); | |
2765 | s->insn_bits = usbdux_dio_insn_bits; | |
2766 | s->insn_config = usbdux_dio_insn_config; | |
2767 | /* we don't use it */ | |
2768 | s->private = NULL; | |
2769 | ||
2770 | if (udev->high_speed) { | |
2771 | /* timer / pwm */ | |
2772 | s = dev->subdevices + SUBDEV_PWM; | |
2773 | s->type = COMEDI_SUBD_PWM; | |
2774 | s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE; | |
2775 | s->n_chan = 8; | |
2776 | /* this defines the max duty cycle resolution */ | |
2777 | s->maxdata = udev->sizePwmBuf; | |
2778 | s->insn_write = usbdux_pwm_write; | |
2779 | s->insn_read = usbdux_pwm_read; | |
2780 | s->insn_config = usbdux_pwm_config; | |
2781 | usbdux_pwm_period(dev, s, PWM_DEFAULT_PERIOD); | |
2782 | } | |
2783 | /* finally decide that it's attached */ | |
2784 | udev->attached = 1; | |
2785 | ||
2786 | up(&udev->sem); | |
2787 | ||
2788 | up(&start_stop_sem); | |
2789 | ||
2790 | offset = usbdux_getstatusinfo(dev, 0); | |
2791 | if (offset < 0) | |
2792 | dev_err(&udev->interface->dev, | |
2793 | "Communication to USBDUXSIGMA failed!" | |
2794 | "Check firmware and cabling."); | |
2795 | ||
2796 | dev_info(&udev->interface->dev, | |
2797 | "comedi%d: attached, ADC_zero = %x", dev->minor, offset); | |
2798 | ||
2799 | return 0; | |
2800 | } | |
2801 | ||
2802 | static int usbduxsigma_detach(struct comedi_device *dev) | |
2803 | { | |
2804 | struct usbduxsub *usbduxsub_tmp; | |
2805 | ||
2806 | if (!dev) { | |
2807 | printk(KERN_ERR | |
2808 | "comedi? usbduxsigma detach: dev=NULL\n"); | |
2809 | return -EFAULT; | |
2810 | } | |
2811 | ||
2812 | usbduxsub_tmp = dev->private; | |
2813 | if (!usbduxsub_tmp) { | |
2814 | printk(KERN_ERR | |
2815 | "comedi?: usbduxsigma detach: private=NULL\n"); | |
2816 | return -EFAULT; | |
2817 | } | |
2818 | ||
2819 | dev_dbg(&usbduxsub_tmp->interface->dev, | |
2820 | "comedi%d: detach usb device\n", | |
2821 | dev->minor); | |
2822 | ||
2823 | down(&usbduxsub_tmp->sem); | |
2824 | /* Don't allow detach to free the private structure */ | |
2825 | /* It's one entry of of usbduxsub[] */ | |
2826 | dev->private = NULL; | |
2827 | usbduxsub_tmp->attached = 0; | |
2828 | usbduxsub_tmp->comedidev = NULL; | |
2829 | dev_info(&usbduxsub_tmp->interface->dev, | |
2830 | "comedi%d: successfully detached.\n", dev->minor); | |
2831 | up(&usbduxsub_tmp->sem); | |
2832 | return 0; | |
2833 | } | |
2834 | ||
2835 | /* main driver struct */ | |
2836 | static struct comedi_driver driver_usbduxsigma = { | |
2837 | .driver_name = "usbduxsigma", | |
2838 | .module = THIS_MODULE, | |
2839 | .attach = usbduxsigma_attach, | |
2840 | .detach = usbduxsigma_detach, | |
2841 | }; | |
2842 | ||
2843 | /* Table with the USB-devices */ | |
2844 | static const struct usb_device_id usbduxsigma_table[] = { | |
2845 | {USB_DEVICE(0x13d8, 0x0020)}, | |
2846 | {USB_DEVICE(0x13d8, 0x0021)}, | |
2847 | {USB_DEVICE(0x13d8, 0x0022)}, | |
2848 | {} /* Terminating entry */ | |
2849 | }; | |
2850 | ||
2851 | MODULE_DEVICE_TABLE(usb, usbduxsigma_table); | |
2852 | ||
2853 | /* The usbduxsub-driver */ | |
2854 | static struct usb_driver usbduxsigma_driver = { | |
2855 | .name = BOARDNAME, | |
2856 | .probe = usbduxsigma_probe, | |
2857 | .disconnect = usbduxsigma_disconnect, | |
2858 | .id_table = usbduxsigma_table, | |
2859 | }; | |
2860 | ||
2861 | /* Can't use the nice macro as I have also to initialise the USB */ | |
2862 | /* subsystem: */ | |
2863 | /* registering the usb-system _and_ the comedi-driver */ | |
2864 | static int __init init_usbduxsigma(void) | |
2865 | { | |
2866 | printk(KERN_INFO KBUILD_MODNAME ": " | |
2867 | DRIVER_VERSION ":" DRIVER_DESC "\n"); | |
2868 | usb_register(&usbduxsigma_driver); | |
2869 | comedi_driver_register(&driver_usbduxsigma); | |
2870 | return 0; | |
2871 | } | |
2872 | ||
2873 | /* deregistering the comedi driver and the usb-subsystem */ | |
2874 | static void __exit exit_usbduxsigma(void) | |
2875 | { | |
2876 | comedi_driver_unregister(&driver_usbduxsigma); | |
2877 | usb_deregister(&usbduxsigma_driver); | |
2878 | } | |
2879 | ||
2880 | module_init(init_usbduxsigma); | |
2881 | module_exit(exit_usbduxsigma); | |
2882 | ||
2883 | MODULE_AUTHOR(DRIVER_AUTHOR); | |
2884 | MODULE_DESCRIPTION(DRIVER_DESC); | |
2885 | MODULE_LICENSE("GPL"); |