1 #define DRIVER_VERSION "v2.4"
2 #define DRIVER_AUTHOR "Bernd Porr, BerndPorr@f2s.com"
3 #define DRIVER_DESC "Stirling/ITL USB-DUX -- Bernd.Porr@f2s.com"
5 comedi/drivers/usbdux.c
6 Copyright (C) 2003-2007 Bernd Porr, Bernd.Porr@f2s.com
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.
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.
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.
25 Description: University of Stirling USB DAQ & INCITE Technology Limited
26 Devices: [ITL] USB-DUX (usbdux.o)
27 Author: Bernd Porr <BerndPorr@f2s.com>
30 Configuration options:
31 You have to upload firmware with the -i option. The
32 firmware is usually installed under /usr/share/usb or
33 /usr/local/share/usb or /lib/firmware.
35 Connection scheme for the counter at the digital port:
36 0=/CLK0, 1=UP/DOWN0, 2=RESET0, 4=/CLK1, 5=UP/DOWN1, 6=RESET1.
37 The sampling rate of the counter is approximately 500Hz.
39 Please note that under USB2.0 the length of the channel list determines
40 the max sampling rate. If you sample only one channel you get 8kHz
41 sampling rate. If you sample two channels you get 4kHz and so on.
44 * I must give credit here to Chris Baugher who
45 * wrote the driver for AT-MIO-16d. I used some parts of this
46 * driver. I also must give credits to David Brownell
47 * who supported me with the USB development.
53 * 0.94: D/A output should work now with any channel list combinations
54 * 0.95: .owner commented out for kernel vers below 2.4.19
55 * sanity checks in ai/ao_cmd
56 * 0.96: trying to get it working with 2.6, moved all memory alloc to comedi's
57 * attach final USB IDs
58 * moved memory allocation completely to the corresponding comedi
59 * functions firmware upload is by fxload and no longer by comedi (due to
61 * 0.97: USB IDs received, adjusted table
62 * 0.98: SMP, locking, memroy alloc: moved all usb memory alloc
63 * to the usb subsystem and moved all comedi related memory
65 * | kernel | registration | usbdux-usb | usbdux-comedi | comedi |
66 * 0.99: USB 2.0: changed protocol to isochronous transfer
67 * IRQ transfer is too buggy and too risky in 2.0
68 * for the high speed ISO transfer is now a working version
70 * 0.99b: Increased the iso transfer buffer for high sp.to 10 buffers. Some VIA
71 * chipsets miss out IRQs. Deeper buffering is needed.
72 * 1.00: full USB 2.0 support for the A/D converter. Now: max 8kHz sampling
74 * Firmware vers 1.00 is needed for this.
75 * Two 16 bit up/down/reset counter with a sampling rate of 1kHz
76 * And loads of cleaning up, in particular streamlining the
78 * 1.1: moved EP4 transfers to EP1 to make space for a PWM output on EP4
79 * 1.2: added PWM suport via EP4
80 * 2.0: PWM seems to be stable and is not interfering with the other functions
81 * 2.1: changed PWM API
82 * 2.2: added firmware kernel request to fix an udev problem
83 * 2.3: corrected a bug in bulk timeouts which were far too short
84 * 2.4: fixed a bug which causes the driver to hang when it ran out of data.
85 * Thanks to Jan-Matthias Braun and Ian to spot the bug and fix it.
89 /* generates loads of debug info */
90 /* #define NOISY_DUX_DEBUGBUG */
92 #include <linux/kernel.h>
93 #include <linux/module.h>
94 #include <linux/init.h>
95 #include <linux/slab.h>
96 #include <linux/input.h>
97 #include <linux/usb.h>
98 #include <linux/fcntl.h>
99 #include <linux/compiler.h>
100 #include <linux/firmware.h>
102 #include "../comedidev.h"
104 #define BOARDNAME "usbdux"
106 /* timeout for the USB-transfer in ms*/
107 #define BULK_TIMEOUT 1000
109 /* constants for "firmware" upload and download */
110 #define USBDUXSUB_FIRMWARE 0xA0
111 #define VENDOR_DIR_IN 0xC0
112 #define VENDOR_DIR_OUT 0x40
114 /* internal adresses of the 8051 processor */
115 #define USBDUXSUB_CPUCS 0xE600
118 * the minor device number, major is 180 only for debugging purposes and to
119 * upload special firmware (programming the eeprom etc) which is not compatible
120 * with the comedi framwork
122 #define USBDUXSUB_MINOR 32
124 /* max lenghth of the transfer-buffer for software upload */
125 #define TB_LEN 0x2000
127 /* Input endpoint number: ISO/IRQ */
130 /* Output endpoint number: ISO/IRQ */
133 /* This EP sends DUX commands to USBDUX */
134 #define COMMAND_OUT_EP 1
136 /* This EP receives the DUX commands from USBDUX */
137 #define COMMAND_IN_EP 8
139 /* Output endpoint for PWM */
142 /* 300Hz max frequ under PWM */
143 #define MIN_PWM_PERIOD ((long)(1E9/300))
145 /* Default PWM frequency */
146 #define PWM_DEFAULT_PERIOD ((long)(1E9/100))
148 /* Number of channels */
149 #define NUMCHANNELS 8
151 /* Size of one A/D value */
152 #define SIZEADIN ((sizeof(int16_t)))
155 * Size of the input-buffer IN BYTES
156 * Always multiple of 8 for 8 microframes which is needed in the highspeed mode
158 #define SIZEINBUF ((8*SIZEADIN))
161 #define SIZEINSNBUF 16
163 /* Number of DA channels */
164 #define NUMOUTCHANNELS 8
166 /* size of one value for the D/A converter: channel and value */
167 #define SIZEDAOUT ((sizeof(int8_t)+sizeof(int16_t)))
170 * Size of the output-buffer in bytes
171 * Actually only the first 4 triplets are used but for the
172 * high speed mode we need to pad it to 8 (microframes).
174 #define SIZEOUTBUF ((8*SIZEDAOUT))
177 * Size of the buffer for the dux commands: just now max size is determined
178 * by the analogue out + command byte + panic bytes...
180 #define SIZEOFDUXBUFFER ((8*SIZEDAOUT+2))
182 /* Number of in-URBs which receive the data: min=2 */
183 #define NUMOFINBUFFERSFULL 5
185 /* Number of out-URBs which send the data: min=2 */
186 #define NUMOFOUTBUFFERSFULL 5
188 /* Number of in-URBs which receive the data: min=5 */
189 /* must have more buffers due to buggy USB ctr */
190 #define NUMOFINBUFFERSHIGH 10
192 /* Number of out-URBs which send the data: min=5 */
193 /* must have more buffers due to buggy USB ctr */
194 #define NUMOFOUTBUFFERSHIGH 10
196 /* Total number of usbdux devices */
199 /* Analogue in subdevice */
202 /* Analogue out subdevice */
209 #define SUBDEV_COUNTER 3
211 /* timer aka pwm output */
214 /* number of retries to get the right dux command */
217 /**************************************************/
218 /* comedi constants */
219 static const struct comedi_lrange range_usbdux_ai_range = { 4, {
231 static const struct comedi_lrange range_usbdux_ao_range = { 2, {
240 * private structure of one subdevice
244 * This is the structure which holds all the data of
245 * this driver one sub device just now: A/D
250 /* is it associated with a subdevice? */
252 /* pointer to the usb-device */
253 struct usb_device *usbdev;
254 /* actual number of in-buffers */
256 /* actual number of out-buffers */
258 /* ISO-transfer handling: buffers */
261 /* pwm-transfer handling */
264 unsigned int pwmPeriod;
265 /* PWM internal delay for the GPIF in the FX2 */
267 /* size of the PWM buffer which holds the bit pattern */
269 /* input buffer for the ISO-transfer */
271 /* input buffer for single insn */
273 /* output buffer for single DA outputs */
275 /* interface number */
277 /* interface structure in 2.6 */
278 struct usb_interface *interface;
279 /* comedi device for the interrupt context */
280 struct comedi_device *comedidev;
281 /* is it USB_SPEED_HIGH or not? */
282 short int high_speed;
283 /* asynchronous command is running */
284 short int ai_cmd_running;
285 short int ao_cmd_running;
287 short int pwm_cmd_running;
288 /* continous aquisition */
289 short int ai_continous;
290 short int ao_continous;
291 /* number of samples to acquire */
294 /* time between samples in units of the timer */
295 unsigned int ai_timer;
296 unsigned int ao_timer;
297 /* counter between aquisitions */
298 unsigned int ai_counter;
299 unsigned int ao_counter;
300 /* interval in frames/uframes */
301 unsigned int ai_interval;
303 int8_t *dac_commands;
305 int8_t *dux_commands;
306 struct semaphore sem;
310 * The pointer to the private usb-data of the driver is also the private data
311 * for the comedi-device. This has to be global as the usb subsystem needs
312 * global variables. The other reason is that this structure must be there
313 * _before_ any comedi command is issued. The usb subsystem must be initialised
314 * before comedi can access it.
316 static struct usbduxsub usbduxsub[NUMUSBDUX];
318 static DECLARE_MUTEX(start_stop_sem);
321 * Stops the data acquision
322 * It should be safe to call this function from any context
324 static int usbduxsub_unlink_InURBs(struct usbduxsub *usbduxsub_tmp)
329 if (usbduxsub_tmp && usbduxsub_tmp->urbIn) {
330 for (i = 0; i < usbduxsub_tmp->numOfInBuffers; i++) {
331 if (usbduxsub_tmp->urbIn[i]) {
332 /* We wait here until all transfers have been
334 usb_kill_urb(usbduxsub_tmp->urbIn[i]);
336 dev_dbg(&usbduxsub_tmp->interface->dev,
337 "comedi: usbdux: unlinked InURB %d, err=%d\n",
345 * This will stop a running acquisition operation
346 * Is called from within this driver from both the
347 * interrupt context and from comedi
349 static int usbdux_ai_stop(struct usbduxsub *this_usbduxsub, int do_unlink)
353 if (!this_usbduxsub) {
354 dev_err(&this_usbduxsub->interface->dev,
355 "comedi?: usbdux_ai_stop: this_usbduxsub=NULL!\n");
358 dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_stop\n");
362 ret = usbduxsub_unlink_InURBs(this_usbduxsub);
365 this_usbduxsub->ai_cmd_running = 0;
371 * This will cancel a running acquisition operation.
372 * This is called by comedi but never from inside the driver.
374 static int usbdux_ai_cancel(struct comedi_device *dev,
375 struct comedi_subdevice *s)
377 struct usbduxsub *this_usbduxsub;
380 /* force unlink of all urbs */
381 this_usbduxsub = dev->private;
385 dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ai_cancel\n");
387 /* prevent other CPUs from submitting new commands just now */
388 down(&this_usbduxsub->sem);
389 if (!(this_usbduxsub->probed)) {
390 up(&this_usbduxsub->sem);
393 /* unlink only if the urb really has been submitted */
394 res = usbdux_ai_stop(this_usbduxsub, this_usbduxsub->ai_cmd_running);
395 up(&this_usbduxsub->sem);
399 /* analogue IN - interrupt service routine */
400 static void usbduxsub_ai_IsocIrq(struct urb *urb)
403 struct usbduxsub *this_usbduxsub;
404 struct comedi_device *this_comedidev;
405 struct comedi_subdevice *s;
407 /* the context variable points to the subdevice */
408 this_comedidev = urb->context;
409 /* the private structure of the subdevice is struct usbduxsub */
410 this_usbduxsub = this_comedidev->private;
411 /* subdevice which is the AD converter */
412 s = this_comedidev->subdevices + SUBDEV_AD;
414 /* first we test if something unusual has just happened */
415 switch (urb->status) {
417 /* copy the result in the transfer buffer */
418 memcpy(this_usbduxsub->inBuffer,
419 urb->transfer_buffer, SIZEINBUF);
422 /* error in the ISOchronous data */
423 /* we don't copy the data into the transfer buffer */
424 /* and recycle the last data byte */
425 dev_dbg(&urb->dev->dev,
426 "comedi%d: usbdux: CRC error in ISO IN stream.\n",
427 this_usbduxsub->comedidev->minor);
435 /* happens after an unlink command */
436 if (this_usbduxsub->ai_cmd_running) {
437 /* we are still running a command */
438 /* tell this comedi */
439 s->async->events |= COMEDI_CB_EOA;
440 s->async->events |= COMEDI_CB_ERROR;
441 comedi_event(this_usbduxsub->comedidev, s);
442 /* stop the transfer w/o unlink */
443 usbdux_ai_stop(this_usbduxsub, 0);
448 /* a real error on the bus */
449 /* pass error to comedi if we are really running a command */
450 if (this_usbduxsub->ai_cmd_running) {
451 dev_err(&urb->dev->dev,
452 "Non-zero urb status received in ai intr "
453 "context: %d\n", urb->status);
454 s->async->events |= COMEDI_CB_EOA;
455 s->async->events |= COMEDI_CB_ERROR;
456 comedi_event(this_usbduxsub->comedidev, s);
457 /* don't do an unlink here */
458 usbdux_ai_stop(this_usbduxsub, 0);
464 * at this point we are reasonably sure that nothing dodgy has happened
465 * are we running a command?
467 if (unlikely((!(this_usbduxsub->ai_cmd_running)))) {
469 * not running a command, do not continue execution if no
470 * asynchronous command is running in particular not resubmit
475 urb->dev = this_usbduxsub->usbdev;
477 /* resubmit the urb */
478 err = usb_submit_urb(urb, GFP_ATOMIC);
479 if (unlikely(err < 0)) {
480 dev_err(&urb->dev->dev,
481 "comedi_: urb resubmit failed in int-context! err=%d\n",
483 if (err == -EL2NSYNC)
484 dev_err(&urb->dev->dev,
485 "buggy USB host controller or bug in IRQ "
487 s->async->events |= COMEDI_CB_EOA;
488 s->async->events |= COMEDI_CB_ERROR;
489 comedi_event(this_usbduxsub->comedidev, s);
490 /* don't do an unlink here */
491 usbdux_ai_stop(this_usbduxsub, 0);
495 this_usbduxsub->ai_counter--;
496 if (likely(this_usbduxsub->ai_counter > 0))
499 /* timer zero, transfer measurements to comedi */
500 this_usbduxsub->ai_counter = this_usbduxsub->ai_timer;
502 /* test, if we transmit only a fixed number of samples */
503 if (!(this_usbduxsub->ai_continous)) {
504 /* not continous, fixed number of samples */
505 this_usbduxsub->ai_sample_count--;
506 /* all samples received? */
507 if (this_usbduxsub->ai_sample_count < 0) {
508 /* prevent a resubmit next time */
509 usbdux_ai_stop(this_usbduxsub, 0);
510 /* say comedi that the acquistion is over */
511 s->async->events |= COMEDI_CB_EOA;
512 comedi_event(this_usbduxsub->comedidev, s);
516 /* get the data from the USB bus and hand it over to comedi */
517 n = s->async->cmd.chanlist_len;
518 for (i = 0; i < n; i++) {
520 if (CR_RANGE(s->async->cmd.chanlist[i]) <= 1) {
523 le16_to_cpu(this_usbduxsub->inBuffer[i]) ^ 0x800);
527 le16_to_cpu(this_usbduxsub->inBuffer[i]));
529 if (unlikely(err == 0)) {
530 /* buffer overflow */
531 usbdux_ai_stop(this_usbduxsub, 0);
535 /* tell comedi that data is there */
536 s->async->events |= COMEDI_CB_BLOCK | COMEDI_CB_EOS;
537 comedi_event(this_usbduxsub->comedidev, s);
540 static int usbduxsub_unlink_OutURBs(struct usbduxsub *usbduxsub_tmp)
545 if (usbduxsub_tmp && usbduxsub_tmp->urbOut) {
546 for (i = 0; i < usbduxsub_tmp->numOfOutBuffers; i++) {
547 if (usbduxsub_tmp->urbOut[i])
548 usb_kill_urb(usbduxsub_tmp->urbOut[i]);
550 dev_dbg(&usbduxsub_tmp->interface->dev,
551 "comedi: usbdux: unlinked OutURB %d: res=%d\n",
558 /* This will cancel a running acquisition operation
561 static int usbdux_ao_stop(struct usbduxsub *this_usbduxsub, int do_unlink)
567 dev_dbg(&this_usbduxsub->interface->dev, "comedi: usbdux_ao_cancel\n");
570 ret = usbduxsub_unlink_OutURBs(this_usbduxsub);
572 this_usbduxsub->ao_cmd_running = 0;
577 /* force unlink, is called by comedi */
578 static int usbdux_ao_cancel(struct comedi_device *dev,
579 struct comedi_subdevice *s)
581 struct usbduxsub *this_usbduxsub = dev->private;
587 /* prevent other CPUs from submitting a command just now */
588 down(&this_usbduxsub->sem);
589 if (!(this_usbduxsub->probed)) {
590 up(&this_usbduxsub->sem);
593 /* unlink only if it is really running */
594 res = usbdux_ao_stop(this_usbduxsub, this_usbduxsub->ao_cmd_running);
595 up(&this_usbduxsub->sem);
599 static void usbduxsub_ao_IsocIrq(struct urb *urb)
603 struct usbduxsub *this_usbduxsub;
604 struct comedi_device *this_comedidev;
605 struct comedi_subdevice *s;
607 /* the context variable points to the subdevice */
608 this_comedidev = urb->context;
609 /* the private structure of the subdevice is struct usbduxsub */
610 this_usbduxsub = this_comedidev->private;
612 s = this_comedidev->subdevices + SUBDEV_DA;
614 switch (urb->status) {
623 /* after an unlink command, unplug, ... etc */
624 /* no unlink needed here. Already shutting down. */
625 if (this_usbduxsub->ao_cmd_running) {
626 s->async->events |= COMEDI_CB_EOA;
627 comedi_event(this_usbduxsub->comedidev, s);
628 usbdux_ao_stop(this_usbduxsub, 0);
634 if (this_usbduxsub->ao_cmd_running) {
635 dev_err(&urb->dev->dev,
636 "comedi_: Non-zero urb status received in ao "
637 "intr context: %d\n", urb->status);
638 s->async->events |= COMEDI_CB_ERROR;
639 s->async->events |= COMEDI_CB_EOA;
640 comedi_event(this_usbduxsub->comedidev, s);
641 /* we do an unlink if we are in the high speed mode */
642 usbdux_ao_stop(this_usbduxsub, 0);
647 /* are we actually running? */
648 if (!(this_usbduxsub->ao_cmd_running))
651 /* normal operation: executing a command in this subdevice */
652 this_usbduxsub->ao_counter--;
653 if (this_usbduxsub->ao_counter <= 0) {
655 this_usbduxsub->ao_counter = this_usbduxsub->ao_timer;
657 /* handle non continous aquisition */
658 if (!(this_usbduxsub->ao_continous)) {
659 /* fixed number of samples */
660 this_usbduxsub->ao_sample_count--;
661 if (this_usbduxsub->ao_sample_count < 0) {
662 /* all samples transmitted */
663 usbdux_ao_stop(this_usbduxsub, 0);
664 s->async->events |= COMEDI_CB_EOA;
665 comedi_event(this_usbduxsub->comedidev, s);
666 /* no resubmit of the urb */
670 /* transmit data to the USB bus */
671 ((uint8_t *) (urb->transfer_buffer))[0] =
672 s->async->cmd.chanlist_len;
673 for (i = 0; i < s->async->cmd.chanlist_len; i++) {
675 if (i >= NUMOUTCHANNELS)
678 /* pointer to the DA */
680 (&(((int8_t *) urb->transfer_buffer)[i * 3 + 1]));
681 /* get the data from comedi */
682 ret = comedi_buf_get(s->async, &temp);
684 datap[1] = temp >> 8;
685 datap[2] = this_usbduxsub->dac_commands[i];
686 /* printk("data[0]=%x, data[1]=%x, data[2]=%x\n", */
687 /* datap[0],datap[1],datap[2]); */
689 dev_err(&urb->dev->dev,
690 "comedi: buffer underflow\n");
691 s->async->events |= COMEDI_CB_EOA;
692 s->async->events |= COMEDI_CB_OVERFLOW;
694 /* transmit data to comedi */
695 s->async->events |= COMEDI_CB_BLOCK;
696 comedi_event(this_usbduxsub->comedidev, s);
699 urb->transfer_buffer_length = SIZEOUTBUF;
700 urb->dev = this_usbduxsub->usbdev;
702 if (this_usbduxsub->ao_cmd_running) {
703 if (this_usbduxsub->high_speed) {
710 urb->number_of_packets = 1;
711 urb->iso_frame_desc[0].offset = 0;
712 urb->iso_frame_desc[0].length = SIZEOUTBUF;
713 urb->iso_frame_desc[0].status = 0;
714 ret = usb_submit_urb(urb, GFP_ATOMIC);
716 dev_err(&urb->dev->dev,
717 "comedi_: ao urb resubm failed in int-cont. "
720 dev_err(&urb->dev->dev,
721 "buggy USB host controller or bug in "
724 s->async->events |= COMEDI_CB_EOA;
725 s->async->events |= COMEDI_CB_ERROR;
726 comedi_event(this_usbduxsub->comedidev, s);
727 /* don't do an unlink here */
728 usbdux_ao_stop(this_usbduxsub, 0);
733 static int usbduxsub_start(struct usbduxsub *usbduxsub)
736 uint8_t local_transfer_buffer[16];
739 local_transfer_buffer[0] = 0;
740 errcode = usb_control_msg(usbduxsub->usbdev,
741 /* create a pipe for a control transfer */
742 usb_sndctrlpipe(usbduxsub->usbdev, 0),
743 /* bRequest, "Firmware" */
751 /* address of the transfer buffer */
752 local_transfer_buffer,
758 dev_err(&usbduxsub->interface->dev,
759 "comedi_: control msg failed (start)\n");
765 static int usbduxsub_stop(struct usbduxsub *usbduxsub)
769 uint8_t local_transfer_buffer[16];
772 local_transfer_buffer[0] = 1;
773 errcode = usb_control_msg(usbduxsub->usbdev,
774 usb_sndctrlpipe(usbduxsub->usbdev, 0),
775 /* bRequest, "Firmware" */
782 0x0000, local_transfer_buffer,
788 dev_err(&usbduxsub->interface->dev,
789 "comedi_: control msg failed (stop)\n");
795 static int usbduxsub_upload(struct usbduxsub *usbduxsub,
796 uint8_t * local_transfer_buffer,
797 unsigned int startAddr, unsigned int len)
801 errcode = usb_control_msg(usbduxsub->usbdev,
802 usb_sndctrlpipe(usbduxsub->usbdev, 0),
803 /* brequest, firmware */
811 /* our local safe buffer */
812 local_transfer_buffer,
817 dev_dbg(&usbduxsub->interface->dev, "comedi_: result=%d\n", errcode);
819 dev_err(&usbduxsub->interface->dev, "comedi_: upload failed\n");
825 #define FIRMWARE_MAX_LEN 0x2000
827 static int firmwareUpload(struct usbduxsub *usbduxsub,
828 const u8 * firmwareBinary, int sizeFirmware)
836 if (sizeFirmware > FIRMWARE_MAX_LEN) {
837 dev_err(&usbduxsub->interface->dev,
838 "comedi_: usbdux firmware binary it too large for FX2.\n");
842 /* we generate a local buffer for the firmware */
843 fwBuf = kzalloc(sizeFirmware, GFP_KERNEL);
845 dev_err(&usbduxsub->interface->dev,
846 "comedi_: mem alloc for firmware failed\n");
849 memcpy(fwBuf, firmwareBinary, sizeFirmware);
851 ret = usbduxsub_stop(usbduxsub);
853 dev_err(&usbduxsub->interface->dev,
854 "comedi_: can not stop firmware\n");
859 ret = usbduxsub_upload(usbduxsub, fwBuf, 0, sizeFirmware);
861 dev_err(&usbduxsub->interface->dev,
862 "comedi_: firmware upload failed\n");
866 ret = usbduxsub_start(usbduxsub);
868 dev_err(&usbduxsub->interface->dev,
869 "comedi_: can not start firmware\n");
877 static int usbduxsub_submit_InURBs(struct usbduxsub *usbduxsub)
884 /* Submit all URBs and start the transfer on the bus */
885 for (i = 0; i < usbduxsub->numOfInBuffers; i++) {
886 /* in case of a resubmission after an unlink... */
887 usbduxsub->urbIn[i]->interval = usbduxsub->ai_interval;
888 usbduxsub->urbIn[i]->context = usbduxsub->comedidev;
889 usbduxsub->urbIn[i]->dev = usbduxsub->usbdev;
890 usbduxsub->urbIn[i]->status = 0;
891 usbduxsub->urbIn[i]->transfer_flags = URB_ISO_ASAP;
892 dev_dbg(&usbduxsub->interface->dev,
893 "comedi%d: submitting in-urb[%d]: %p,%p intv=%d\n",
894 usbduxsub->comedidev->minor, i,
895 (usbduxsub->urbIn[i]->context),
896 (usbduxsub->urbIn[i]->dev),
897 (usbduxsub->urbIn[i]->interval));
898 errFlag = usb_submit_urb(usbduxsub->urbIn[i], GFP_ATOMIC);
900 dev_err(&usbduxsub->interface->dev,
901 "comedi_: ai: usb_submit_urb(%d) error %d\n",
909 static int usbduxsub_submit_OutURBs(struct usbduxsub *usbduxsub)
916 for (i = 0; i < usbduxsub->numOfOutBuffers; i++) {
917 dev_dbg(&usbduxsub->interface->dev,
918 "comedi_: submitting out-urb[%d]\n", i);
919 /* in case of a resubmission after an unlink... */
920 usbduxsub->urbOut[i]->context = usbduxsub->comedidev;
921 usbduxsub->urbOut[i]->dev = usbduxsub->usbdev;
922 usbduxsub->urbOut[i]->status = 0;
923 usbduxsub->urbOut[i]->transfer_flags = URB_ISO_ASAP;
924 errFlag = usb_submit_urb(usbduxsub->urbOut[i], GFP_ATOMIC);
926 dev_err(&usbduxsub->interface->dev,
927 "comedi_: ao: usb_submit_urb(%d) error %d\n",
935 static int usbdux_ai_cmdtest(struct comedi_device *dev,
936 struct comedi_subdevice *s, struct comedi_cmd *cmd)
939 unsigned int tmpTimer;
940 struct usbduxsub *this_usbduxsub = dev->private;
942 if (!(this_usbduxsub->probed))
945 dev_dbg(&this_usbduxsub->interface->dev,
946 "comedi%d: usbdux_ai_cmdtest\n", dev->minor);
948 /* make sure triggers are valid */
949 /* Only immediate triggers are allowed */
950 tmp = cmd->start_src;
951 cmd->start_src &= TRIG_NOW | TRIG_INT;
952 if (!cmd->start_src || tmp != cmd->start_src)
955 /* trigger should happen timed */
956 tmp = cmd->scan_begin_src;
957 /* start a new _scan_ with a timer */
958 cmd->scan_begin_src &= TRIG_TIMER;
959 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
962 /* scanning is continous */
963 tmp = cmd->convert_src;
964 cmd->convert_src &= TRIG_NOW;
965 if (!cmd->convert_src || tmp != cmd->convert_src)
968 /* issue a trigger when scan is finished and start a new scan */
969 tmp = cmd->scan_end_src;
970 cmd->scan_end_src &= TRIG_COUNT;
971 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
974 /* trigger at the end of count events or not, stop condition or not */
976 cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
977 if (!cmd->stop_src || tmp != cmd->stop_src)
984 * step 2: make sure trigger sources are unique and mutually compatible
985 * note that mutual compatibility is not an issue here
987 if (cmd->scan_begin_src != TRIG_FOLLOW &&
988 cmd->scan_begin_src != TRIG_EXT &&
989 cmd->scan_begin_src != TRIG_TIMER)
991 if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
997 /* step 3: make sure arguments are trivially compatible */
998 if (cmd->start_arg != 0) {
1003 if (cmd->scan_begin_src == TRIG_FOLLOW) {
1004 /* internal trigger */
1005 if (cmd->scan_begin_arg != 0) {
1006 cmd->scan_begin_arg = 0;
1011 if (cmd->scan_begin_src == TRIG_TIMER) {
1012 if (this_usbduxsub->high_speed) {
1014 * In high speed mode microframes are possible.
1015 * However, during one microframe we can roughly
1016 * sample one channel. Thus, the more channels
1017 * are in the channel list the more time we need.
1020 /* find a power of 2 for the number of channels */
1021 while (i < (cmd->chanlist_len))
1024 if (cmd->scan_begin_arg < (1000000 / 8 * i)) {
1025 cmd->scan_begin_arg = 1000000 / 8 * i;
1028 /* now calc the real sampling rate with all the
1029 * rounding errors */
1031 ((unsigned int)(cmd->scan_begin_arg / 125000)) *
1033 if (cmd->scan_begin_arg != tmpTimer) {
1034 cmd->scan_begin_arg = tmpTimer;
1039 /* 1kHz scans every USB frame */
1040 if (cmd->scan_begin_arg < 1000000) {
1041 cmd->scan_begin_arg = 1000000;
1045 * calc the real sampling rate with the rounding errors
1047 tmpTimer = ((unsigned int)(cmd->scan_begin_arg /
1048 1000000)) * 1000000;
1049 if (cmd->scan_begin_arg != tmpTimer) {
1050 cmd->scan_begin_arg = tmpTimer;
1055 /* the same argument */
1056 if (cmd->scan_end_arg != cmd->chanlist_len) {
1057 cmd->scan_end_arg = cmd->chanlist_len;
1061 if (cmd->stop_src == TRIG_COUNT) {
1062 /* any count is allowed */
1065 if (cmd->stop_arg != 0) {
1078 * creates the ADC command for the MAX1271
1079 * range is the range value from comedi
1081 static int8_t create_adc_command(unsigned int chan, int range)
1083 int8_t p = (range <= 1);
1084 int8_t r = ((range % 2) == 0);
1085 return (chan << 4) | ((p == 1) << 2) | ((r == 1) << 3);
1088 /* bulk transfers to usbdux */
1090 #define SENDADCOMMANDS 0
1091 #define SENDDACOMMANDS 1
1092 #define SENDDIOCONFIGCOMMAND 2
1093 #define SENDDIOBITSCOMMAND 3
1094 #define SENDSINGLEAD 4
1095 #define READCOUNTERCOMMAND 5
1096 #define WRITECOUNTERCOMMAND 6
1098 #define SENDPWMOFF 8
1100 static int send_dux_commands(struct usbduxsub *this_usbduxsub, int cmd_type)
1104 this_usbduxsub->dux_commands[0] = cmd_type;
1105 #ifdef NOISY_DUX_DEBUGBUG
1106 printk(KERN_DEBUG "comedi%d: usbdux: dux_commands: ",
1107 this_usbduxsub->comedidev->minor);
1108 for (result = 0; result < SIZEOFDUXBUFFER; result++)
1109 printk(" %02x", this_usbduxsub->dux_commands[result]);
1112 result = usb_bulk_msg(this_usbduxsub->usbdev,
1113 usb_sndbulkpipe(this_usbduxsub->usbdev,
1115 this_usbduxsub->dux_commands, SIZEOFDUXBUFFER,
1116 &nsent, BULK_TIMEOUT);
1118 dev_err(&this_usbduxsub->interface->dev, "comedi%d: "
1119 "could not transmit dux_command to the usb-device, "
1120 "err=%d\n", this_usbduxsub->comedidev->minor, result);
1125 static int receive_dux_commands(struct usbduxsub *this_usbduxsub, int command)
1127 int result = (-EFAULT);
1131 for (i = 0; i < RETRIES; i++) {
1132 result = usb_bulk_msg(this_usbduxsub->usbdev,
1133 usb_rcvbulkpipe(this_usbduxsub->usbdev,
1135 this_usbduxsub->insnBuffer, SIZEINSNBUF,
1136 &nrec, BULK_TIMEOUT);
1138 dev_err(&this_usbduxsub->interface->dev, "comedi%d: "
1139 "insn: USB error %d while receiving DUX command"
1140 "\n", this_usbduxsub->comedidev->minor, result);
1143 if (le16_to_cpu(this_usbduxsub->insnBuffer[0]) == command)
1146 /* this is only reached if the data has been requested a couple of
1148 dev_err(&this_usbduxsub->interface->dev, "comedi%d: insn: "
1149 "wrong data returned from firmware: want cmd %d, got cmd %d.\n",
1150 this_usbduxsub->comedidev->minor, command,
1151 le16_to_cpu(this_usbduxsub->insnBuffer[0]));
1155 static int usbdux_ai_inttrig(struct comedi_device *dev,
1156 struct comedi_subdevice *s, unsigned int trignum)
1159 struct usbduxsub *this_usbduxsub = dev->private;
1160 if (!this_usbduxsub)
1163 down(&this_usbduxsub->sem);
1164 if (!(this_usbduxsub->probed)) {
1165 up(&this_usbduxsub->sem);
1168 dev_dbg(&this_usbduxsub->interface->dev,
1169 "comedi%d: usbdux_ai_inttrig\n", dev->minor);
1172 dev_err(&this_usbduxsub->interface->dev,
1173 "comedi%d: usbdux_ai_inttrig: invalid trignum\n",
1175 up(&this_usbduxsub->sem);
1178 if (!(this_usbduxsub->ai_cmd_running)) {
1179 this_usbduxsub->ai_cmd_running = 1;
1180 ret = usbduxsub_submit_InURBs(this_usbduxsub);
1182 dev_err(&this_usbduxsub->interface->dev,
1183 "comedi%d: usbdux_ai_inttrig: "
1184 "urbSubmit: err=%d\n", dev->minor, ret);
1185 this_usbduxsub->ai_cmd_running = 0;
1186 up(&this_usbduxsub->sem);
1189 s->async->inttrig = NULL;
1191 dev_err(&this_usbduxsub->interface->dev,
1192 "comedi%d: ai_inttrig but acqu is already running\n",
1195 up(&this_usbduxsub->sem);
1199 static int usbdux_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
1201 struct comedi_cmd *cmd = &s->async->cmd;
1202 unsigned int chan, range;
1204 struct usbduxsub *this_usbduxsub = dev->private;
1207 if (!this_usbduxsub)
1210 dev_dbg(&this_usbduxsub->interface->dev,
1211 "comedi%d: usbdux_ai_cmd\n", dev->minor);
1213 /* block other CPUs from starting an ai_cmd */
1214 down(&this_usbduxsub->sem);
1216 if (!(this_usbduxsub->probed)) {
1217 up(&this_usbduxsub->sem);
1220 if (this_usbduxsub->ai_cmd_running) {
1221 dev_err(&this_usbduxsub->interface->dev, "comedi%d: "
1222 "ai_cmd not possible. Another ai_cmd is running.\n",
1224 up(&this_usbduxsub->sem);
1227 /* set current channel of the running aquisition to zero */
1228 s->async->cur_chan = 0;
1230 this_usbduxsub->dux_commands[1] = cmd->chanlist_len;
1231 for (i = 0; i < cmd->chanlist_len; ++i) {
1232 chan = CR_CHAN(cmd->chanlist[i]);
1233 range = CR_RANGE(cmd->chanlist[i]);
1234 if (i >= NUMCHANNELS) {
1235 dev_err(&this_usbduxsub->interface->dev,
1236 "comedi%d: channel list too long\n",
1240 this_usbduxsub->dux_commands[i + 2] =
1241 create_adc_command(chan, range);
1244 dev_dbg(&this_usbduxsub->interface->dev,
1245 "comedi %d: sending commands to the usb device: size=%u\n",
1246 dev->minor, NUMCHANNELS);
1248 result = send_dux_commands(this_usbduxsub, SENDADCOMMANDS);
1250 up(&this_usbduxsub->sem);
1254 if (this_usbduxsub->high_speed) {
1256 * every channel gets a time window of 125us. Thus, if we
1257 * sample all 8 channels we need 1ms. If we sample only one
1258 * channel we need only 125us
1260 this_usbduxsub->ai_interval = 1;
1261 /* find a power of 2 for the interval */
1262 while ((this_usbduxsub->ai_interval) < (cmd->chanlist_len)) {
1263 this_usbduxsub->ai_interval =
1264 (this_usbduxsub->ai_interval) * 2;
1266 this_usbduxsub->ai_timer = cmd->scan_begin_arg / (125000 *
1270 /* interval always 1ms */
1271 this_usbduxsub->ai_interval = 1;
1272 this_usbduxsub->ai_timer = cmd->scan_begin_arg / 1000000;
1274 if (this_usbduxsub->ai_timer < 1) {
1275 dev_err(&this_usbduxsub->interface->dev, "comedi%d: ai_cmd: "
1276 "timer=%d, scan_begin_arg=%d. "
1277 "Not properly tested by cmdtest?\n", dev->minor,
1278 this_usbduxsub->ai_timer, cmd->scan_begin_arg);
1279 up(&this_usbduxsub->sem);
1282 this_usbduxsub->ai_counter = this_usbduxsub->ai_timer;
1284 if (cmd->stop_src == TRIG_COUNT) {
1285 /* data arrives as one packet */
1286 this_usbduxsub->ai_sample_count = cmd->stop_arg;
1287 this_usbduxsub->ai_continous = 0;
1289 /* continous aquisition */
1290 this_usbduxsub->ai_continous = 1;
1291 this_usbduxsub->ai_sample_count = 0;
1294 if (cmd->start_src == TRIG_NOW) {
1295 /* enable this acquisition operation */
1296 this_usbduxsub->ai_cmd_running = 1;
1297 ret = usbduxsub_submit_InURBs(this_usbduxsub);
1299 this_usbduxsub->ai_cmd_running = 0;
1300 /* fixme: unlink here?? */
1301 up(&this_usbduxsub->sem);
1304 s->async->inttrig = NULL;
1307 /* don't enable the acquision operation */
1308 /* wait for an internal signal */
1309 s->async->inttrig = usbdux_ai_inttrig;
1311 up(&this_usbduxsub->sem);
1315 /* Mode 0 is used to get a single conversion on demand */
1316 static int usbdux_ai_insn_read(struct comedi_device *dev,
1317 struct comedi_subdevice *s,
1318 struct comedi_insn *insn, unsigned int *data)
1321 unsigned int one = 0;
1324 struct usbduxsub *this_usbduxsub = dev->private;
1326 if (!this_usbduxsub)
1329 dev_dbg(&this_usbduxsub->interface->dev,
1330 "comedi%d: ai_insn_read, insn->n=%d, insn->subdev=%d\n",
1331 dev->minor, insn->n, insn->subdev);
1333 down(&this_usbduxsub->sem);
1334 if (!(this_usbduxsub->probed)) {
1335 up(&this_usbduxsub->sem);
1338 if (this_usbduxsub->ai_cmd_running) {
1339 dev_err(&this_usbduxsub->interface->dev,
1340 "comedi%d: ai_insn_read not possible. "
1341 "Async Command is running.\n", dev->minor);
1342 up(&this_usbduxsub->sem);
1346 /* sample one channel */
1347 chan = CR_CHAN(insn->chanspec);
1348 range = CR_RANGE(insn->chanspec);
1349 /* set command for the first channel */
1350 this_usbduxsub->dux_commands[1] = create_adc_command(chan, range);
1353 err = send_dux_commands(this_usbduxsub, SENDSINGLEAD);
1355 up(&this_usbduxsub->sem);
1359 for (i = 0; i < insn->n; i++) {
1360 err = receive_dux_commands(this_usbduxsub, SENDSINGLEAD);
1362 up(&this_usbduxsub->sem);
1365 one = le16_to_cpu(this_usbduxsub->insnBuffer[1]);
1366 if (CR_RANGE(insn->chanspec) <= 1)
1371 up(&this_usbduxsub->sem);
1375 /************************************/
1378 static int usbdux_ao_insn_read(struct comedi_device *dev,
1379 struct comedi_subdevice *s,
1380 struct comedi_insn *insn, unsigned int *data)
1383 int chan = CR_CHAN(insn->chanspec);
1384 struct usbduxsub *this_usbduxsub = dev->private;
1386 if (!this_usbduxsub)
1389 down(&this_usbduxsub->sem);
1390 if (!(this_usbduxsub->probed)) {
1391 up(&this_usbduxsub->sem);
1394 for (i = 0; i < insn->n; i++)
1395 data[i] = this_usbduxsub->outBuffer[chan];
1397 up(&this_usbduxsub->sem);
1401 static int usbdux_ao_insn_write(struct comedi_device *dev,
1402 struct comedi_subdevice *s,
1403 struct comedi_insn *insn, unsigned int *data)
1406 int chan = CR_CHAN(insn->chanspec);
1407 struct usbduxsub *this_usbduxsub = dev->private;
1409 if (!this_usbduxsub)
1412 dev_dbg(&this_usbduxsub->interface->dev,
1413 "comedi%d: ao_insn_write\n", dev->minor);
1415 down(&this_usbduxsub->sem);
1416 if (!(this_usbduxsub->probed)) {
1417 up(&this_usbduxsub->sem);
1420 if (this_usbduxsub->ao_cmd_running) {
1421 dev_err(&this_usbduxsub->interface->dev,
1422 "comedi%d: ao_insn_write: "
1423 "ERROR: asynchronous ao_cmd is running\n", dev->minor);
1424 up(&this_usbduxsub->sem);
1428 for (i = 0; i < insn->n; i++) {
1429 dev_dbg(&this_usbduxsub->interface->dev,
1430 "comedi%d: ao_insn_write: data[chan=%d,i=%d]=%d\n",
1431 dev->minor, chan, i, data[i]);
1433 /* number of channels: 1 */
1434 this_usbduxsub->dux_commands[1] = 1;
1435 /* one 16 bit value */
1436 *((int16_t *) (this_usbduxsub->dux_commands + 2)) =
1437 cpu_to_le16(data[i]);
1438 this_usbduxsub->outBuffer[chan] = data[i];
1439 /* channel number */
1440 this_usbduxsub->dux_commands[4] = (chan << 6);
1441 err = send_dux_commands(this_usbduxsub, SENDDACOMMANDS);
1443 up(&this_usbduxsub->sem);
1447 up(&this_usbduxsub->sem);
1452 static int usbdux_ao_inttrig(struct comedi_device *dev,
1453 struct comedi_subdevice *s, unsigned int trignum)
1456 struct usbduxsub *this_usbduxsub = dev->private;
1458 if (!this_usbduxsub)
1461 down(&this_usbduxsub->sem);
1462 if (!(this_usbduxsub->probed)) {
1463 up(&this_usbduxsub->sem);
1467 dev_err(&this_usbduxsub->interface->dev,
1468 "comedi%d: usbdux_ao_inttrig: invalid trignum\n",
1472 if (!(this_usbduxsub->ao_cmd_running)) {
1473 this_usbduxsub->ao_cmd_running = 1;
1474 ret = usbduxsub_submit_OutURBs(this_usbduxsub);
1476 dev_err(&this_usbduxsub->interface->dev,
1477 "comedi%d: usbdux_ao_inttrig: submitURB: "
1478 "err=%d\n", dev->minor, ret);
1479 this_usbduxsub->ao_cmd_running = 0;
1480 up(&this_usbduxsub->sem);
1483 s->async->inttrig = NULL;
1485 dev_err(&this_usbduxsub->interface->dev,
1486 "comedi%d: ao_inttrig but acqu is already running.\n",
1489 up(&this_usbduxsub->sem);
1493 static int usbdux_ao_cmdtest(struct comedi_device *dev,
1494 struct comedi_subdevice *s, struct comedi_cmd *cmd)
1497 struct usbduxsub *this_usbduxsub = dev->private;
1499 if (!this_usbduxsub)
1502 if (!(this_usbduxsub->probed))
1505 dev_dbg(&this_usbduxsub->interface->dev,
1506 "comedi%d: usbdux_ao_cmdtest\n", dev->minor);
1508 /* make sure triggers are valid */
1509 /* Only immediate triggers are allowed */
1510 tmp = cmd->start_src;
1511 cmd->start_src &= TRIG_NOW | TRIG_INT;
1512 if (!cmd->start_src || tmp != cmd->start_src)
1515 /* trigger should happen timed */
1516 tmp = cmd->scan_begin_src;
1517 /* just now we scan also in the high speed mode every frame */
1518 /* this is due to ehci driver limitations */
1519 if (0) { /* (this_usbduxsub->high_speed) */
1520 /* start immidiately a new scan */
1521 /* the sampling rate is set by the coversion rate */
1522 cmd->scan_begin_src &= TRIG_FOLLOW;
1524 /* start a new scan (output at once) with a timer */
1525 cmd->scan_begin_src &= TRIG_TIMER;
1527 if (!cmd->scan_begin_src || tmp != cmd->scan_begin_src)
1530 /* scanning is continous */
1531 tmp = cmd->convert_src;
1532 /* we always output at 1kHz just now all channels at once */
1533 if (0) { /* (this_usbduxsub->high_speed) */
1535 * in usb-2.0 only one conversion it tranmitted but with 8kHz/n
1537 cmd->convert_src &= TRIG_TIMER;
1539 /* all conversion events happen simultaneously with a rate of
1541 cmd->convert_src &= TRIG_NOW;
1543 if (!cmd->convert_src || tmp != cmd->convert_src)
1546 /* issue a trigger when scan is finished and start a new scan */
1547 tmp = cmd->scan_end_src;
1548 cmd->scan_end_src &= TRIG_COUNT;
1549 if (!cmd->scan_end_src || tmp != cmd->scan_end_src)
1552 /* trigger at the end of count events or not, stop condition or not */
1553 tmp = cmd->stop_src;
1554 cmd->stop_src &= TRIG_COUNT | TRIG_NONE;
1555 if (!cmd->stop_src || tmp != cmd->stop_src)
1562 * step 2: make sure trigger sources are unique and mutually compatible
1563 * note that mutual compatibility is not an issue here
1565 if (cmd->scan_begin_src != TRIG_FOLLOW &&
1566 cmd->scan_begin_src != TRIG_EXT &&
1567 cmd->scan_begin_src != TRIG_TIMER)
1569 if (cmd->stop_src != TRIG_COUNT && cmd->stop_src != TRIG_NONE)
1575 /* step 3: make sure arguments are trivially compatible */
1577 if (cmd->start_arg != 0) {
1582 if (cmd->scan_begin_src == TRIG_FOLLOW) {
1583 /* internal trigger */
1584 if (cmd->scan_begin_arg != 0) {
1585 cmd->scan_begin_arg = 0;
1590 if (cmd->scan_begin_src == TRIG_TIMER) {
1592 if (cmd->scan_begin_arg < 1000000) {
1593 cmd->scan_begin_arg = 1000000;
1597 /* not used now, is for later use */
1598 if (cmd->convert_src == TRIG_TIMER) {
1599 if (cmd->convert_arg < 125000) {
1600 cmd->convert_arg = 125000;
1605 /* the same argument */
1606 if (cmd->scan_end_arg != cmd->chanlist_len) {
1607 cmd->scan_end_arg = cmd->chanlist_len;
1611 if (cmd->stop_src == TRIG_COUNT) {
1612 /* any count is allowed */
1615 if (cmd->stop_arg != 0) {
1621 dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: err=%d, "
1622 "scan_begin_src=%d, scan_begin_arg=%d, convert_src=%d, "
1623 "convert_arg=%d\n", dev->minor, err, cmd->scan_begin_src,
1624 cmd->scan_begin_arg, cmd->convert_src, cmd->convert_arg);
1632 static int usbdux_ao_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
1634 struct comedi_cmd *cmd = &s->async->cmd;
1635 unsigned int chan, gain;
1637 struct usbduxsub *this_usbduxsub = dev->private;
1639 if (!this_usbduxsub)
1642 down(&this_usbduxsub->sem);
1643 if (!(this_usbduxsub->probed)) {
1644 up(&this_usbduxsub->sem);
1647 dev_dbg(&this_usbduxsub->interface->dev,
1648 "comedi%d: %s\n", dev->minor, __func__);
1650 /* set current channel of the running aquisition to zero */
1651 s->async->cur_chan = 0;
1652 for (i = 0; i < cmd->chanlist_len; ++i) {
1653 chan = CR_CHAN(cmd->chanlist[i]);
1654 gain = CR_RANGE(cmd->chanlist[i]);
1655 if (i >= NUMOUTCHANNELS) {
1656 dev_err(&this_usbduxsub->interface->dev,
1657 "comedi%d: %s: channel list too long\n",
1658 dev->minor, __func__);
1661 this_usbduxsub->dac_commands[i] = (chan << 6);
1662 dev_dbg(&this_usbduxsub->interface->dev,
1663 "comedi%d: dac command for ch %d is %x\n",
1664 dev->minor, i, this_usbduxsub->dac_commands[i]);
1667 /* we count in steps of 1ms (125us) */
1668 /* 125us mode not used yet */
1669 if (0) { /* (this_usbduxsub->high_speed) */
1671 /* timing of the conversion itself: every 125 us */
1672 this_usbduxsub->ao_timer = cmd->convert_arg / 125000;
1675 /* timing of the scan: we get all channels at once */
1676 this_usbduxsub->ao_timer = cmd->scan_begin_arg / 1000000;
1677 dev_dbg(&this_usbduxsub->interface->dev,
1678 "comedi%d: scan_begin_src=%d, scan_begin_arg=%d, "
1679 "convert_src=%d, convert_arg=%d\n", dev->minor,
1680 cmd->scan_begin_src, cmd->scan_begin_arg,
1681 cmd->convert_src, cmd->convert_arg);
1682 dev_dbg(&this_usbduxsub->interface->dev,
1683 "comedi%d: ao_timer=%d (ms)\n",
1684 dev->minor, this_usbduxsub->ao_timer);
1685 if (this_usbduxsub->ao_timer < 1) {
1686 dev_err(&this_usbduxsub->interface->dev,
1687 "comedi%d: usbdux: ao_timer=%d, "
1688 "scan_begin_arg=%d. "
1689 "Not properly tested by cmdtest?\n",
1690 dev->minor, this_usbduxsub->ao_timer,
1691 cmd->scan_begin_arg);
1692 up(&this_usbduxsub->sem);
1696 this_usbduxsub->ao_counter = this_usbduxsub->ao_timer;
1698 if (cmd->stop_src == TRIG_COUNT) {
1701 /* high speed also scans everything at once */
1702 if (0) { /* (this_usbduxsub->high_speed) */
1703 this_usbduxsub->ao_sample_count =
1704 (cmd->stop_arg) * (cmd->scan_end_arg);
1706 /* there's no scan as the scan has been */
1707 /* perf inside the FX2 */
1708 /* data arrives as one packet */
1709 this_usbduxsub->ao_sample_count = cmd->stop_arg;
1711 this_usbduxsub->ao_continous = 0;
1713 /* continous aquisition */
1714 this_usbduxsub->ao_continous = 1;
1715 this_usbduxsub->ao_sample_count = 0;
1718 if (cmd->start_src == TRIG_NOW) {
1719 /* enable this acquisition operation */
1720 this_usbduxsub->ao_cmd_running = 1;
1721 ret = usbduxsub_submit_OutURBs(this_usbduxsub);
1723 this_usbduxsub->ao_cmd_running = 0;
1724 /* fixme: unlink here?? */
1725 up(&this_usbduxsub->sem);
1728 s->async->inttrig = NULL;
1731 /* submit the urbs later */
1732 /* wait for an internal signal */
1733 s->async->inttrig = usbdux_ao_inttrig;
1736 up(&this_usbduxsub->sem);
1740 static int usbdux_dio_insn_config(struct comedi_device *dev,
1741 struct comedi_subdevice *s,
1742 struct comedi_insn *insn, unsigned int *data)
1744 int chan = CR_CHAN(insn->chanspec);
1746 /* The input or output configuration of each digital line is
1747 * configured by a special insn_config instruction. chanspec
1748 * contains the channel to be changed, and data[0] contains the
1749 * value COMEDI_INPUT or COMEDI_OUTPUT. */
1752 case INSN_CONFIG_DIO_OUTPUT:
1753 s->io_bits |= 1 << chan; /* 1 means Out */
1755 case INSN_CONFIG_DIO_INPUT:
1756 s->io_bits &= ~(1 << chan);
1758 case INSN_CONFIG_DIO_QUERY:
1760 (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
1766 /* we don't tell the firmware here as it would take 8 frames */
1767 /* to submit the information. We do it in the insn_bits. */
1771 static int usbdux_dio_insn_bits(struct comedi_device *dev,
1772 struct comedi_subdevice *s,
1773 struct comedi_insn *insn, unsigned int *data)
1776 struct usbduxsub *this_usbduxsub = dev->private;
1779 if (!this_usbduxsub)
1785 down(&this_usbduxsub->sem);
1787 if (!(this_usbduxsub->probed)) {
1788 up(&this_usbduxsub->sem);
1792 /* The insn data is a mask in data[0] and the new data
1793 * in data[1], each channel cooresponding to a bit. */
1794 s->state &= ~data[0];
1795 s->state |= data[0] & data[1];
1796 this_usbduxsub->dux_commands[1] = s->io_bits;
1797 this_usbduxsub->dux_commands[2] = s->state;
1799 /* This command also tells the firmware to return */
1800 /* the digital input lines */
1801 err = send_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND);
1803 up(&this_usbduxsub->sem);
1806 err = receive_dux_commands(this_usbduxsub, SENDDIOBITSCOMMAND);
1808 up(&this_usbduxsub->sem);
1812 data[1] = le16_to_cpu(this_usbduxsub->insnBuffer[1]);
1813 up(&this_usbduxsub->sem);
1817 /* reads the 4 counters, only two are used just now */
1818 static int usbdux_counter_read(struct comedi_device *dev,
1819 struct comedi_subdevice *s,
1820 struct comedi_insn *insn, unsigned int *data)
1822 struct usbduxsub *this_usbduxsub = dev->private;
1823 int chan = insn->chanspec;
1826 if (!this_usbduxsub)
1829 down(&this_usbduxsub->sem);
1831 if (!(this_usbduxsub->probed)) {
1832 up(&this_usbduxsub->sem);
1836 err = send_dux_commands(this_usbduxsub, READCOUNTERCOMMAND);
1838 up(&this_usbduxsub->sem);
1842 err = receive_dux_commands(this_usbduxsub, READCOUNTERCOMMAND);
1844 up(&this_usbduxsub->sem);
1848 data[0] = le16_to_cpu(this_usbduxsub->insnBuffer[chan + 1]);
1849 up(&this_usbduxsub->sem);
1853 static int usbdux_counter_write(struct comedi_device *dev,
1854 struct comedi_subdevice *s,
1855 struct comedi_insn *insn, unsigned int *data)
1857 struct usbduxsub *this_usbduxsub = dev->private;
1860 if (!this_usbduxsub)
1863 down(&this_usbduxsub->sem);
1865 if (!(this_usbduxsub->probed)) {
1866 up(&this_usbduxsub->sem);
1870 this_usbduxsub->dux_commands[1] = insn->chanspec;
1871 *((int16_t *) (this_usbduxsub->dux_commands + 2)) = cpu_to_le16(*data);
1873 err = send_dux_commands(this_usbduxsub, WRITECOUNTERCOMMAND);
1875 up(&this_usbduxsub->sem);
1879 up(&this_usbduxsub->sem);
1884 static int usbdux_counter_config(struct comedi_device *dev,
1885 struct comedi_subdevice *s,
1886 struct comedi_insn *insn, unsigned int *data)
1888 /* nothing to do so far */
1892 /***********************************/
1895 static int usbduxsub_unlink_PwmURBs(struct usbduxsub *usbduxsub_tmp)
1899 if (usbduxsub_tmp && usbduxsub_tmp->urbPwm) {
1900 if (usbduxsub_tmp->urbPwm)
1901 usb_kill_urb(usbduxsub_tmp->urbPwm);
1902 dev_dbg(&usbduxsub_tmp->interface->dev,
1903 "comedi: unlinked PwmURB: res=%d\n", err);
1908 /* This cancels a running acquisition operation
1911 static int usbdux_pwm_stop(struct usbduxsub *this_usbduxsub, int do_unlink)
1915 if (!this_usbduxsub)
1918 dev_dbg(&this_usbduxsub->interface->dev, "comedi: %s\n", __func__);
1920 ret = usbduxsub_unlink_PwmURBs(this_usbduxsub);
1922 this_usbduxsub->pwm_cmd_running = 0;
1927 /* force unlink - is called by comedi */
1928 static int usbdux_pwm_cancel(struct comedi_device *dev,
1929 struct comedi_subdevice *s)
1931 struct usbduxsub *this_usbduxsub = dev->private;
1934 /* unlink only if it is really running */
1935 res = usbdux_pwm_stop(this_usbduxsub, this_usbduxsub->pwm_cmd_running);
1937 dev_dbg(&this_usbduxsub->interface->dev,
1938 "comedi %d: sending pwm off command to the usb device.\n",
1940 res = send_dux_commands(this_usbduxsub, SENDPWMOFF);
1947 static void usbduxsub_pwm_irq(struct urb *urb)
1950 struct usbduxsub *this_usbduxsub;
1951 struct comedi_device *this_comedidev;
1952 struct comedi_subdevice *s;
1954 /* printk(KERN_DEBUG "PWM: IRQ\n"); */
1956 /* the context variable points to the subdevice */
1957 this_comedidev = urb->context;
1958 /* the private structure of the subdevice is struct usbduxsub */
1959 this_usbduxsub = this_comedidev->private;
1961 s = this_comedidev->subdevices + SUBDEV_DA;
1963 switch (urb->status) {
1973 * after an unlink command, unplug, ... etc
1974 * no unlink needed here. Already shutting down.
1976 if (this_usbduxsub->pwm_cmd_running)
1977 usbdux_pwm_stop(this_usbduxsub, 0);
1983 if (this_usbduxsub->pwm_cmd_running) {
1984 dev_err(&this_usbduxsub->interface->dev,
1985 "comedi_: Non-zero urb status received in "
1986 "pwm intr context: %d\n", urb->status);
1987 usbdux_pwm_stop(this_usbduxsub, 0);
1992 /* are we actually running? */
1993 if (!(this_usbduxsub->pwm_cmd_running))
1996 urb->transfer_buffer_length = this_usbduxsub->sizePwmBuf;
1997 urb->dev = this_usbduxsub->usbdev;
1999 if (this_usbduxsub->pwm_cmd_running) {
2000 ret = usb_submit_urb(urb, GFP_ATOMIC);
2002 dev_err(&this_usbduxsub->interface->dev,
2003 "comedi_: pwm urb resubm failed in int-cont. "
2005 if (ret == EL2NSYNC)
2006 dev_err(&this_usbduxsub->interface->dev,
2007 "buggy USB host controller or bug in "
2010 /* don't do an unlink here */
2011 usbdux_pwm_stop(this_usbduxsub, 0);
2016 static int usbduxsub_submit_PwmURBs(struct usbduxsub *usbduxsub)
2023 dev_dbg(&usbduxsub->interface->dev, "comedi_: submitting pwm-urb\n");
2025 /* in case of a resubmission after an unlink... */
2026 usb_fill_bulk_urb(usbduxsub->urbPwm,
2028 usb_sndbulkpipe(usbduxsub->usbdev, PWM_EP),
2029 usbduxsub->urbPwm->transfer_buffer,
2030 usbduxsub->sizePwmBuf, usbduxsub_pwm_irq,
2031 usbduxsub->comedidev);
2033 errFlag = usb_submit_urb(usbduxsub->urbPwm, GFP_ATOMIC);
2035 dev_err(&usbduxsub->interface->dev,
2036 "comedi_: usbdux: pwm: usb_submit_urb error %d\n",
2043 static int usbdux_pwm_period(struct comedi_device *dev,
2044 struct comedi_subdevice *s, unsigned int period)
2046 struct usbduxsub *this_usbduxsub = dev->private;
2049 if (period < MIN_PWM_PERIOD) {
2050 dev_err(&this_usbduxsub->interface->dev,
2051 "comedi%d: illegal period setting for pwm.\n",
2055 fx2delay = period / ((int)(6 * 512 * (1.0 / 0.033))) - 6;
2056 if (fx2delay > 255) {
2057 dev_err(&this_usbduxsub->interface->dev,
2058 "comedi%d: period %d for pwm is too low.\n",
2059 dev->minor, period);
2063 this_usbduxsub->pwmDelay = fx2delay;
2064 this_usbduxsub->pwmPeriod = period;
2065 dev_dbg(&this_usbduxsub->interface->dev, "%s: frequ=%d, period=%d\n",
2066 __func__, period, fx2delay);
2070 /* is called from insn so there's no need to do all the sanity checks */
2071 static int usbdux_pwm_start(struct comedi_device *dev,
2072 struct comedi_subdevice *s)
2075 struct usbduxsub *this_usbduxsub = dev->private;
2077 dev_dbg(&this_usbduxsub->interface->dev, "comedi%d: %s\n",
2078 dev->minor, __func__);
2080 if (this_usbduxsub->pwm_cmd_running) {
2081 /* already running */
2085 this_usbduxsub->dux_commands[1] = ((int8_t) this_usbduxsub->pwmDelay);
2086 ret = send_dux_commands(this_usbduxsub, SENDPWMON);
2090 /* initalise the buffer */
2091 for (i = 0; i < this_usbduxsub->sizePwmBuf; i++)
2092 ((char *)(this_usbduxsub->urbPwm->transfer_buffer))[i] = 0;
2094 this_usbduxsub->pwm_cmd_running = 1;
2095 ret = usbduxsub_submit_PwmURBs(this_usbduxsub);
2097 this_usbduxsub->pwm_cmd_running = 0;
2103 /* generates the bit pattern for PWM with the optional sign bit */
2104 static int usbdux_pwm_pattern(struct comedi_device *dev,
2105 struct comedi_subdevice *s, int channel,
2106 unsigned int value, unsigned int sign)
2108 struct usbduxsub *this_usbduxsub = dev->private;
2115 if (!this_usbduxsub)
2118 /* this is the DIO bit which carries the PWM data */
2119 pwm_mask = (1 << channel);
2120 /* this is the DIO bit which carries the optional direction bit */
2121 sgn_mask = (16 << channel);
2122 /* this is the buffer which will be filled with the with bit */
2123 /* pattern for one period */
2124 szbuf = this_usbduxsub->sizePwmBuf;
2125 pBuf = (char *)(this_usbduxsub->urbPwm->transfer_buffer);
2126 for (i = 0; i < szbuf; i++) {
2129 c = c & (~pwm_mask);
2130 /* set the bit as long as the index is lower than the value */
2133 /* set the optional sign bit for a relay */
2135 /* positive value */
2136 c = c & (~sgn_mask);
2138 /* negative value */
2146 static int usbdux_pwm_write(struct comedi_device *dev,
2147 struct comedi_subdevice *s,
2148 struct comedi_insn *insn, unsigned int *data)
2150 struct usbduxsub *this_usbduxsub = dev->private;
2152 if (!this_usbduxsub)
2155 if ((insn->n) != 1) {
2157 * doesn't make sense to have more than one value here because
2158 * it would just overwrite the PWM buffer a couple of times
2164 * the sign is set via a special INSN only, this gives us 8 bits for
2166 * relay sign 0 by default
2168 return usbdux_pwm_pattern(dev, s, CR_CHAN(insn->chanspec), data[0], 0);
2171 static int usbdux_pwm_read(struct comedi_device *x1,
2172 struct comedi_subdevice *x2, struct comedi_insn *x3,
2179 /* switches on/off PWM */
2180 static int usbdux_pwm_config(struct comedi_device *dev,
2181 struct comedi_subdevice *s,
2182 struct comedi_insn *insn, unsigned int *data)
2184 struct usbduxsub *this_usbduxsub = dev->private;
2186 case INSN_CONFIG_ARM:
2188 dev_dbg(&this_usbduxsub->interface->dev,
2189 "comedi%d: %s: pwm on\n", dev->minor, __func__);
2191 * if not zero the PWM is limited to a certain time which is
2192 * not supported here
2196 return usbdux_pwm_start(dev, s);
2197 case INSN_CONFIG_DISARM:
2198 dev_dbg(&this_usbduxsub->interface->dev,
2199 "comedi%d: %s: pwm off\n", dev->minor, __func__);
2200 return usbdux_pwm_cancel(dev, s);
2201 case INSN_CONFIG_GET_PWM_STATUS:
2203 * to check if the USB transmission has failed or in case PWM
2204 * was limited to n cycles to check if it has terminated
2206 data[1] = this_usbduxsub->pwm_cmd_running;
2208 case INSN_CONFIG_PWM_SET_PERIOD:
2209 dev_dbg(&this_usbduxsub->interface->dev,
2210 "comedi%d: %s: setting period\n", dev->minor, __func__);
2211 return usbdux_pwm_period(dev, s, data[1]);
2212 case INSN_CONFIG_PWM_GET_PERIOD:
2213 data[1] = this_usbduxsub->pwmPeriod;
2215 case INSN_CONFIG_PWM_SET_H_BRIDGE:
2216 /* value in the first byte and the sign in the second for a
2218 return usbdux_pwm_pattern(dev, s,
2219 /* the channel number */
2220 CR_CHAN(insn->chanspec),
2221 /* actual PWM data */
2225 case INSN_CONFIG_PWM_GET_H_BRIDGE:
2226 /* values are not kept in this driver, nothing to return here */
2233 /*****************************************************************/
2235 static void tidy_up(struct usbduxsub *usbduxsub_tmp)
2241 dev_dbg(&usbduxsub_tmp->interface->dev, "comedi_: tiding up\n");
2243 /* shows the usb subsystem that the driver is down */
2244 if (usbduxsub_tmp->interface)
2245 usb_set_intfdata(usbduxsub_tmp->interface, NULL);
2247 usbduxsub_tmp->probed = 0;
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);
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;
2261 kfree(usbduxsub_tmp->urbIn);
2262 usbduxsub_tmp->urbIn = NULL;
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);
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 =
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;
2282 kfree(usbduxsub_tmp->urbOut);
2283 usbduxsub_tmp->urbOut = NULL;
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);
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;
2296 kfree(usbduxsub_tmp->inBuffer);
2297 usbduxsub_tmp->inBuffer = NULL;
2298 kfree(usbduxsub_tmp->insnBuffer);
2299 usbduxsub_tmp->insnBuffer = NULL;
2300 kfree(usbduxsub_tmp->inBuffer);
2301 usbduxsub_tmp->inBuffer = 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;
2311 static void usbdux_firmware_request_complete_handler(const struct firmware *fw,
2314 struct usbduxsub *usbduxsub_tmp = context;
2315 struct usb_device *usbdev = usbduxsub_tmp->usbdev;
2319 dev_err(&usbdev->dev,
2320 "Firmware complete handler without firmware!\n");
2325 * we need to upload the firmware here because fw will be
2326 * freed once we've left this function
2328 ret = firmwareUpload(usbduxsub_tmp, fw->data, fw->size);
2331 dev_err(&usbdev->dev,
2332 "Could not upload firmware (err=%d)\n", ret);
2335 comedi_usb_auto_config(usbdev, BOARDNAME);
2337 release_firmware(fw);
2340 /* allocate memory for the urbs and initialise them */
2341 static int usbduxsub_probe(struct usb_interface *uinterf,
2342 const struct usb_device_id *id)
2344 struct usb_device *udev = interface_to_usbdev(uinterf);
2345 struct device *dev = &uinterf->dev;
2350 dev_dbg(dev, "comedi_: usbdux_: "
2351 "finding a free structure for the usb-device\n");
2353 down(&start_stop_sem);
2354 /* look for a free place in the usbdux array */
2356 for (i = 0; i < NUMUSBDUX; i++) {
2357 if (!(usbduxsub[i].probed)) {
2365 dev_err(dev, "Too many usbdux-devices connected.\n");
2366 up(&start_stop_sem);
2369 dev_dbg(dev, "comedi_: usbdux: "
2370 "usbduxsub[%d] is ready to connect to comedi.\n", index);
2372 init_MUTEX(&(usbduxsub[index].sem));
2373 /* save a pointer to the usb device */
2374 usbduxsub[index].usbdev = udev;
2376 /* 2.6: 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]));
2384 dev_dbg(dev, "comedi_: usbdux: ifnum=%d\n", usbduxsub[index].ifnum);
2386 /* test if it is high speed (USB 2.0) */
2387 usbduxsub[index].high_speed =
2388 (usbduxsub[index].usbdev->speed == USB_SPEED_HIGH);
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_: usbdux: "
2394 "error alloc space for dac commands\n");
2395 tidy_up(&(usbduxsub[index]));
2396 up(&start_stop_sem);
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_: usbdux: "
2403 "error alloc space for dac commands\n");
2404 tidy_up(&(usbduxsub[index]));
2405 up(&start_stop_sem);
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_: usbdux: "
2412 "could not alloc space for inBuffer\n");
2413 tidy_up(&(usbduxsub[index]));
2414 up(&start_stop_sem);
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_: usbdux: "
2421 "could not alloc space for insnBuffer\n");
2422 tidy_up(&(usbduxsub[index]));
2423 up(&start_stop_sem);
2426 /* create space for the outbuffer */
2427 usbduxsub[index].outBuffer = kzalloc(SIZEOUTBUF, GFP_KERNEL);
2428 if (!(usbduxsub[index].outBuffer)) {
2429 dev_err(dev, "comedi_: usbdux: "
2430 "could not alloc space for outBuffer\n");
2431 tidy_up(&(usbduxsub[index]));
2432 up(&start_stop_sem);
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);
2439 dev_err(dev, "comedi_: usbdux%d: "
2440 "could not set alternate setting 3 in high speed.\n",
2442 tidy_up(&(usbduxsub[index]));
2443 up(&start_stop_sem);
2446 if (usbduxsub[index].high_speed)
2447 usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSHIGH;
2449 usbduxsub[index].numOfInBuffers = NUMOFINBUFFERSFULL;
2451 usbduxsub[index].urbIn =
2452 kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfInBuffers,
2454 if (!(usbduxsub[index].urbIn)) {
2455 dev_err(dev, "comedi_: usbdux: Could not alloc. urbIn array\n");
2456 tidy_up(&(usbduxsub[index]));
2457 up(&start_stop_sem);
2460 for (i = 0; i < usbduxsub[index].numOfInBuffers; i++) {
2461 /* one frame: 1ms */
2462 usbduxsub[index].urbIn[i] = usb_alloc_urb(1, GFP_KERNEL);
2463 if (usbduxsub[index].urbIn[i] == NULL) {
2464 dev_err(dev, "comedi_: usbdux%d: "
2465 "Could not alloc. urb(%d)\n", index, i);
2466 tidy_up(&(usbduxsub[index]));
2467 up(&start_stop_sem);
2470 usbduxsub[index].urbIn[i]->dev = usbduxsub[index].usbdev;
2471 /* will be filled later with a pointer to the comedi-device */
2472 /* and ONLY then the urb should be submitted */
2473 usbduxsub[index].urbIn[i]->context = NULL;
2474 usbduxsub[index].urbIn[i]->pipe =
2475 usb_rcvisocpipe(usbduxsub[index].usbdev, ISOINEP);
2476 usbduxsub[index].urbIn[i]->transfer_flags = URB_ISO_ASAP;
2477 usbduxsub[index].urbIn[i]->transfer_buffer =
2478 kzalloc(SIZEINBUF, GFP_KERNEL);
2479 if (!(usbduxsub[index].urbIn[i]->transfer_buffer)) {
2480 dev_err(dev, "comedi_: usbdux%d: "
2481 "could not alloc. transb.\n", index);
2482 tidy_up(&(usbduxsub[index]));
2483 up(&start_stop_sem);
2486 usbduxsub[index].urbIn[i]->complete = usbduxsub_ai_IsocIrq;
2487 usbduxsub[index].urbIn[i]->number_of_packets = 1;
2488 usbduxsub[index].urbIn[i]->transfer_buffer_length = SIZEINBUF;
2489 usbduxsub[index].urbIn[i]->iso_frame_desc[0].offset = 0;
2490 usbduxsub[index].urbIn[i]->iso_frame_desc[0].length = SIZEINBUF;
2494 if (usbduxsub[index].high_speed)
2495 usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSHIGH;
2497 usbduxsub[index].numOfOutBuffers = NUMOFOUTBUFFERSFULL;
2499 usbduxsub[index].urbOut =
2500 kzalloc(sizeof(struct urb *) * usbduxsub[index].numOfOutBuffers,
2502 if (!(usbduxsub[index].urbOut)) {
2503 dev_err(dev, "comedi_: usbdux: "
2504 "Could not alloc. urbOut array\n");
2505 tidy_up(&(usbduxsub[index]));
2506 up(&start_stop_sem);
2509 for (i = 0; i < usbduxsub[index].numOfOutBuffers; i++) {
2510 /* one frame: 1ms */
2511 usbduxsub[index].urbOut[i] = usb_alloc_urb(1, GFP_KERNEL);
2512 if (usbduxsub[index].urbOut[i] == NULL) {
2513 dev_err(dev, "comedi_: usbdux%d: "
2514 "Could not alloc. urb(%d)\n", index, i);
2515 tidy_up(&(usbduxsub[index]));
2516 up(&start_stop_sem);
2519 usbduxsub[index].urbOut[i]->dev = usbduxsub[index].usbdev;
2520 /* will be filled later with a pointer to the comedi-device */
2521 /* and ONLY then the urb should be submitted */
2522 usbduxsub[index].urbOut[i]->context = NULL;
2523 usbduxsub[index].urbOut[i]->pipe =
2524 usb_sndisocpipe(usbduxsub[index].usbdev, ISOOUTEP);
2525 usbduxsub[index].urbOut[i]->transfer_flags = URB_ISO_ASAP;
2526 usbduxsub[index].urbOut[i]->transfer_buffer =
2527 kzalloc(SIZEOUTBUF, GFP_KERNEL);
2528 if (!(usbduxsub[index].urbOut[i]->transfer_buffer)) {
2529 dev_err(dev, "comedi_: usbdux%d: "
2530 "could not alloc. transb.\n", index);
2531 tidy_up(&(usbduxsub[index]));
2532 up(&start_stop_sem);
2535 usbduxsub[index].urbOut[i]->complete = usbduxsub_ao_IsocIrq;
2536 usbduxsub[index].urbOut[i]->number_of_packets = 1;
2537 usbduxsub[index].urbOut[i]->transfer_buffer_length = SIZEOUTBUF;
2538 usbduxsub[index].urbOut[i]->iso_frame_desc[0].offset = 0;
2539 usbduxsub[index].urbOut[i]->iso_frame_desc[0].length =
2541 if (usbduxsub[index].high_speed) {
2543 usbduxsub[index].urbOut[i]->interval = 8;
2546 usbduxsub[index].urbOut[i]->interval = 1;
2551 if (usbduxsub[index].high_speed) {
2552 /* max bulk ep size in high speed */
2553 usbduxsub[index].sizePwmBuf = 512;
2554 usbduxsub[index].urbPwm = usb_alloc_urb(0, GFP_KERNEL);
2555 if (usbduxsub[index].urbPwm == NULL) {
2556 dev_err(dev, "comedi_: usbdux%d: "
2557 "Could not alloc. pwm urb\n", index);
2558 tidy_up(&(usbduxsub[index]));
2559 up(&start_stop_sem);
2562 usbduxsub[index].urbPwm->transfer_buffer =
2563 kzalloc(usbduxsub[index].sizePwmBuf, GFP_KERNEL);
2564 if (!(usbduxsub[index].urbPwm->transfer_buffer)) {
2565 dev_err(dev, "comedi_: usbdux%d: "
2566 "could not alloc. transb. for pwm\n", index);
2567 tidy_up(&(usbduxsub[index]));
2568 up(&start_stop_sem);
2572 usbduxsub[index].urbPwm = NULL;
2573 usbduxsub[index].sizePwmBuf = 0;
2576 usbduxsub[index].ai_cmd_running = 0;
2577 usbduxsub[index].ao_cmd_running = 0;
2578 usbduxsub[index].pwm_cmd_running = 0;
2580 /* we've reached the bottom of the function */
2581 usbduxsub[index].probed = 1;
2582 up(&start_stop_sem);
2584 ret = request_firmware_nowait(THIS_MODULE,
2586 "usbdux_firmware.bin",
2590 usbdux_firmware_request_complete_handler);
2593 dev_err(dev, "Could not load firmware (err=%d)\n", ret);
2597 dev_info(dev, "comedi_: usbdux%d "
2598 "has been successfully initialised.\n", index);
2603 static void usbduxsub_disconnect(struct usb_interface *intf)
2605 struct usbduxsub *usbduxsub_tmp = usb_get_intfdata(intf);
2606 struct usb_device *udev = interface_to_usbdev(intf);
2608 if (!usbduxsub_tmp) {
2610 "comedi_: disconnect called with null pointer.\n");
2613 if (usbduxsub_tmp->usbdev != udev) {
2614 dev_err(&intf->dev, "comedi_: BUG! called with wrong ptr!!!\n");
2617 comedi_usb_auto_unconfig(udev);
2618 down(&start_stop_sem);
2619 down(&usbduxsub_tmp->sem);
2620 tidy_up(usbduxsub_tmp);
2621 up(&usbduxsub_tmp->sem);
2622 up(&start_stop_sem);
2623 dev_dbg(&intf->dev, "comedi_: disconnected from the usb\n");
2626 /* is called when comedi-config is called */
2627 static int usbdux_attach(struct comedi_device *dev, struct comedi_devconfig *it)
2632 struct usbduxsub *udev;
2634 struct comedi_subdevice *s = NULL;
2635 dev->private = NULL;
2637 down(&start_stop_sem);
2638 /* find a valid device which has been detected by the probe function of
2641 for (i = 0; i < NUMUSBDUX; i++) {
2642 if ((usbduxsub[i].probed) && (!usbduxsub[i].attached)) {
2649 printk(KERN_ERR "comedi%d: usbdux: error: attach failed, no "
2650 "usbdux devs connected to the usb bus.\n", dev->minor);
2651 up(&start_stop_sem);
2655 udev = &usbduxsub[index];
2657 /* pointer back to the corresponding comedi device */
2658 udev->comedidev = dev;
2660 /* trying to upload the firmware into the chip */
2661 if (comedi_aux_data(it->options, 0) &&
2662 it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]) {
2663 firmwareUpload(udev, comedi_aux_data(it->options, 0),
2664 it->options[COMEDI_DEVCONF_AUX_DATA_LENGTH]);
2667 dev->board_name = BOARDNAME;
2669 /* set number of subdevices */
2670 if (udev->high_speed) {
2672 dev->n_subdevices = 5;
2675 dev->n_subdevices = 4;
2678 /* allocate space for the subdevices */
2679 ret = alloc_subdevices(dev, dev->n_subdevices);
2681 dev_err(&udev->interface->dev,
2682 "comedi%d: error alloc space for subdev\n", dev->minor);
2683 up(&start_stop_sem);
2687 dev_info(&udev->interface->dev,
2688 "comedi%d: usb-device %d is attached to comedi.\n",
2690 /* private structure is also simply the usb-structure */
2691 dev->private = udev;
2693 /* the first subdevice is the A/D converter */
2694 s = dev->subdevices + SUBDEV_AD;
2695 /* the URBs get the comedi subdevice */
2696 /* which is responsible for reading */
2697 /* this is the subdevice which reads data */
2698 dev->read_subdev = s;
2699 /* the subdevice receives as private structure the */
2703 s->type = COMEDI_SUBD_AI;
2704 /* readable and ref is to ground */
2705 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ;
2708 /* length of the channellist */
2709 s->len_chanlist = 8;
2710 /* callback functions */
2711 s->insn_read = usbdux_ai_insn_read;
2712 s->do_cmdtest = usbdux_ai_cmdtest;
2713 s->do_cmd = usbdux_ai_cmd;
2714 s->cancel = usbdux_ai_cancel;
2715 /* max value from the A/D converter (12bit) */
2717 /* range table to convert to physical units */
2718 s->range_table = (&range_usbdux_ai_range);
2721 s = dev->subdevices + SUBDEV_DA;
2723 s->type = COMEDI_SUBD_AO;
2724 /* backward pointer */
2725 dev->write_subdev = s;
2726 /* the subdevice receives as private structure the */
2730 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
2733 /* length of the channellist */
2734 s->len_chanlist = 4;
2735 /* 12 bit resolution */
2736 s->maxdata = 0x0fff;
2738 s->range_table = (&range_usbdux_ao_range);
2740 s->do_cmdtest = usbdux_ao_cmdtest;
2741 s->do_cmd = usbdux_ao_cmd;
2742 s->cancel = usbdux_ao_cancel;
2743 s->insn_read = usbdux_ao_insn_read;
2744 s->insn_write = usbdux_ao_insn_write;
2747 s = dev->subdevices + SUBDEV_DIO;
2748 s->type = COMEDI_SUBD_DIO;
2749 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
2752 s->range_table = (&range_digital);
2753 s->insn_bits = usbdux_dio_insn_bits;
2754 s->insn_config = usbdux_dio_insn_config;
2755 /* we don't use it */
2759 s = dev->subdevices + SUBDEV_COUNTER;
2760 s->type = COMEDI_SUBD_COUNTER;
2761 s->subdev_flags = SDF_WRITABLE | SDF_READABLE;
2763 s->maxdata = 0xFFFF;
2764 s->insn_read = usbdux_counter_read;
2765 s->insn_write = usbdux_counter_write;
2766 s->insn_config = usbdux_counter_config;
2768 if (udev->high_speed) {
2770 s = dev->subdevices + SUBDEV_PWM;
2771 s->type = COMEDI_SUBD_PWM;
2772 s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE;
2774 /* this defines the max duty cycle resolution */
2775 s->maxdata = udev->sizePwmBuf;
2776 s->insn_write = usbdux_pwm_write;
2777 s->insn_read = usbdux_pwm_read;
2778 s->insn_config = usbdux_pwm_config;
2779 usbdux_pwm_period(dev, s, PWM_DEFAULT_PERIOD);
2781 /* finally decide that it's attached */
2786 up(&start_stop_sem);
2788 dev_info(&udev->interface->dev, "comedi%d: attached to usbdux.\n",
2794 static int usbdux_detach(struct comedi_device *dev)
2796 struct usbduxsub *usbduxsub_tmp;
2800 "comedi?: usbdux: detach without dev variable...\n");
2804 usbduxsub_tmp = dev->private;
2805 if (!usbduxsub_tmp) {
2807 "comedi?: usbdux: detach without ptr to usbduxsub[]\n");
2811 dev_dbg(&usbduxsub_tmp->interface->dev, "comedi%d: detach usb device\n",
2814 down(&usbduxsub_tmp->sem);
2815 /* Don't allow detach to free the private structure */
2816 /* It's one entry of of usbduxsub[] */
2817 dev->private = NULL;
2818 usbduxsub_tmp->attached = 0;
2819 usbduxsub_tmp->comedidev = NULL;
2820 dev_dbg(&usbduxsub_tmp->interface->dev,
2821 "comedi%d: detach: successfully removed\n", dev->minor);
2822 up(&usbduxsub_tmp->sem);
2826 /* main driver struct */
2827 static struct comedi_driver driver_usbdux = {
2828 .driver_name = "usbdux",
2829 .module = THIS_MODULE,
2830 .attach = usbdux_attach,
2831 .detach = usbdux_detach,
2834 /* Table with the USB-devices: just now only testing IDs */
2835 static const struct usb_device_id usbduxsub_table[] = {
2836 {USB_DEVICE(0x13d8, 0x0001)},
2837 {USB_DEVICE(0x13d8, 0x0002)},
2838 {} /* Terminating entry */
2841 MODULE_DEVICE_TABLE(usb, usbduxsub_table);
2843 /* The usbduxsub-driver */
2844 static struct usb_driver usbduxsub_driver = {
2846 .probe = usbduxsub_probe,
2847 .disconnect = usbduxsub_disconnect,
2848 .id_table = usbduxsub_table,
2851 /* Can't use the nice macro as I have also to initialise the USB */
2853 /* registering the usb-system _and_ the comedi-driver */
2854 static int __init init_usbdux(void)
2856 printk(KERN_INFO KBUILD_MODNAME ": "
2857 DRIVER_VERSION ":" DRIVER_DESC "\n");
2858 usb_register(&usbduxsub_driver);
2859 comedi_driver_register(&driver_usbdux);
2863 /* deregistering the comedi driver and the usb-subsystem */
2864 static void __exit exit_usbdux(void)
2866 comedi_driver_unregister(&driver_usbdux);
2867 usb_deregister(&usbduxsub_driver);
2870 module_init(init_usbdux);
2871 module_exit(exit_usbdux);
2873 MODULE_AUTHOR(DRIVER_AUTHOR);
2874 MODULE_DESCRIPTION(DRIVER_DESC);
2875 MODULE_LICENSE("GPL");