3 * Copyright (C) 2011 Bernd Porr, Bernd.Porr@f2s.com
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
18 * Description: University of Stirling USB DAQ & INCITE Technology Limited
19 * Devices: (ITL) USB-DUX [usbduxsigma]
20 * Author: Bernd Porr <BerndPorr@f2s.com>
26 * I must give credit here to Chris Baugher who
27 * wrote the driver for AT-MIO-16d. I used some parts of this
28 * driver. I also must give credits to David Brownell
29 * who supported me with the USB development.
31 * Note: the raw data from the A/D converter is 24 bit big endian
32 * anything else is little endian to/from the dux board
36 * 0.1: initial version
37 * 0.2: all basic functions implemented, digital I/O only for one port
38 * 0.3: proper vendor ID and driver name
39 * 0.4: fixed D/A voltage range
40 * 0.5: various bug fixes, health check at startup
41 * 0.6: corrected wrong input range
44 #include <linux/kernel.h>
45 #include <linux/module.h>
46 #include <linux/slab.h>
47 #include <linux/input.h>
48 #include <linux/usb.h>
49 #include <linux/fcntl.h>
50 #include <linux/compiler.h>
51 #include <asm/unaligned.h>
53 #include "comedi_fc.h"
54 #include "../comedidev.h"
56 /* timeout for the USB-transfer in ms*/
57 #define BULK_TIMEOUT 1000
59 /* constants for "firmware" upload and download */
60 #define FIRMWARE "usbduxsigma_firmware.bin"
61 #define FIRMWARE_MAX_LEN 0x4000
62 #define USBDUXSUB_FIRMWARE 0xa0
63 #define VENDOR_DIR_IN 0xc0
64 #define VENDOR_DIR_OUT 0x40
66 /* internal addresses of the 8051 processor */
67 #define USBDUXSUB_CPUCS 0xE600
69 /* 300Hz max frequ under PWM */
70 #define MIN_PWM_PERIOD ((long)(1E9/300))
72 /* Default PWM frequency */
73 #define PWM_DEFAULT_PERIOD ((long)(1E9/100))
75 /* Number of channels (16 AD and offset)*/
76 #define NUMCHANNELS 16
78 #define USBDUXSIGMA_NUM_AO_CHAN 4
80 /* Size of one A/D value */
81 #define SIZEADIN ((sizeof(uint32_t)))
84 * Size of the async input-buffer IN BYTES, the DIO state is transmitted
87 #define SIZEINBUF (((NUMCHANNELS+1)*SIZEADIN))
90 #define SIZEINSNBUF 16
92 /* Number of DA channels */
93 #define NUMOUTCHANNELS 8
95 /* size of one value for the D/A converter: channel and value */
96 #define SIZEDAOUT ((sizeof(uint8_t)+sizeof(uint16_t)))
99 * Size of the output-buffer in bytes
100 * Actually only the first 4 triplets are used but for the
101 * high speed mode we need to pad it to 8 (microframes).
103 #define SIZEOUTBUF ((8*SIZEDAOUT))
106 * Size of the buffer for the dux commands: just now max size is determined
107 * by the analogue out + command byte + panic bytes...
109 #define SIZEOFDUXBUFFER ((8*SIZEDAOUT+2))
111 /* Number of in-URBs which receive the data: min=2 */
112 #define NUMOFINBUFFERSFULL 5
114 /* Number of out-URBs which send the data: min=2 */
115 #define NUMOFOUTBUFFERSFULL 5
117 /* Number of in-URBs which receive the data: min=5 */
118 /* must have more buffers due to buggy USB ctr */
119 #define NUMOFINBUFFERSHIGH 10
121 /* Number of out-URBs which send the data: min=5 */
122 /* must have more buffers due to buggy USB ctr */
123 #define NUMOFOUTBUFFERSHIGH 10
125 /* number of retries to get the right dux command */
128 /* bulk transfer commands to usbduxsigma */
129 #define USBBUXSIGMA_AD_CMD 0
130 #define USBDUXSIGMA_DA_CMD 1
131 #define USBDUXSIGMA_DIO_CFG_CMD 2
132 #define USBDUXSIGMA_DIO_BITS_CMD 3
133 #define USBDUXSIGMA_SINGLE_AD_CMD 4
134 #define USBDUXSIGMA_PWM_ON_CMD 7
135 #define USBDUXSIGMA_PWM_OFF_CMD 8
137 static const struct comedi_lrange usbduxsigma_ai_range = {
139 BIP_RANGE(2.65 / 2.0)
143 struct usbduxsigma_private {
144 /* actual number of in-buffers */
146 /* actual number of out-buffers */
148 /* ISO-transfer handling: buffers */
149 struct urb **ai_urbs;
150 struct urb **ao_urbs;
151 /* pwm-transfer handling */
154 unsigned int pwm_period;
155 /* PWM internal delay for the GPIF in the FX2 */
157 /* size of the PWM buffer which holds the bit pattern */
159 /* input buffer for the ISO-transfer */
161 /* input buffer for single insn */
164 uint8_t ao_chanlist[USBDUXSIGMA_NUM_AO_CHAN];
165 unsigned int ao_readback[USBDUXSIGMA_NUM_AO_CHAN];
167 unsigned high_speed:1;
168 unsigned ai_cmd_running:1;
169 unsigned ai_continuous:1;
170 unsigned ao_cmd_running:1;
171 unsigned ao_continuous:1;
172 unsigned pwm_cmd_running:1;
174 /* number of samples to acquire */
177 /* time between samples in units of the timer */
178 unsigned int ai_timer;
179 unsigned int ao_timer;
180 /* counter between acquisitions */
181 unsigned int ai_counter;
182 unsigned int ao_counter;
183 /* interval in frames/uframes */
184 unsigned int ai_interval;
186 uint8_t *dux_commands;
187 struct semaphore sem;
190 static void usbduxsigma_unlink_urbs(struct urb **urbs, int num_urbs)
194 for (i = 0; i < num_urbs; i++)
195 usb_kill_urb(urbs[i]);
198 static void usbduxsigma_ai_stop(struct comedi_device *dev, int do_unlink)
200 struct usbduxsigma_private *devpriv = dev->private;
202 if (do_unlink && devpriv->ai_urbs)
203 usbduxsigma_unlink_urbs(devpriv->ai_urbs, devpriv->n_ai_urbs);
205 devpriv->ai_cmd_running = 0;
208 static int usbduxsigma_ai_cancel(struct comedi_device *dev,
209 struct comedi_subdevice *s)
211 struct usbduxsigma_private *devpriv = dev->private;
214 /* unlink only if it is really running */
215 usbduxsigma_ai_stop(dev, devpriv->ai_cmd_running);
221 static void usbduxsigma_ai_urb_complete(struct urb *urb)
223 struct comedi_device *dev = urb->context;
224 struct usbduxsigma_private *devpriv = dev->private;
225 struct comedi_subdevice *s = dev->read_subdev;
226 unsigned int dio_state;
231 /* first we test if something unusual has just happened */
232 switch (urb->status) {
234 /* copy the result in the transfer buffer */
235 memcpy(devpriv->in_buf, urb->transfer_buffer, SIZEINBUF);
239 * error in the ISOchronous data
240 * we don't copy the data into the transfer buffer
241 * and recycle the last data byte
243 dev_dbg(dev->class_dev, "CRC error in ISO IN stream\n");
251 /* happens after an unlink command */
252 if (devpriv->ai_cmd_running) {
253 usbduxsigma_ai_stop(dev, 0); /* w/o unlink */
254 /* we are still running a command, tell comedi */
255 s->async->events |= (COMEDI_CB_EOA | COMEDI_CB_ERROR);
256 comedi_event(dev, s);
262 * a real error on the bus
263 * pass error to comedi if we are really running a command
265 if (devpriv->ai_cmd_running) {
266 dev_err(dev->class_dev,
267 "%s: non-zero urb status (%d)\n",
268 __func__, urb->status);
269 usbduxsigma_ai_stop(dev, 0); /* w/o unlink */
270 s->async->events |= (COMEDI_CB_EOA | COMEDI_CB_ERROR);
271 comedi_event(dev, s);
276 if (unlikely(!devpriv->ai_cmd_running))
279 urb->dev = comedi_to_usb_dev(dev);
281 ret = usb_submit_urb(urb, GFP_ATOMIC);
282 if (unlikely(ret < 0)) {
283 dev_err(dev->class_dev, "%s: urb resubmit failed (%d)\n",
285 if (ret == -EL2NSYNC)
286 dev_err(dev->class_dev,
287 "buggy USB host controller or bug in IRQ handler\n");
288 usbduxsigma_ai_stop(dev, 0); /* w/o unlink */
289 s->async->events |= (COMEDI_CB_EOA | COMEDI_CB_ERROR);
290 comedi_event(dev, s);
294 /* get the state of the dio pins to allow external trigger */
295 dio_state = be32_to_cpu(devpriv->in_buf[0]);
297 devpriv->ai_counter--;
298 if (likely(devpriv->ai_counter > 0))
301 /* timer zero, transfer measurements to comedi */
302 devpriv->ai_counter = devpriv->ai_timer;
304 if (!devpriv->ai_continuous) {
305 /* not continuous, fixed number of samples */
306 devpriv->ai_sample_count--;
307 if (devpriv->ai_sample_count < 0) {
308 usbduxsigma_ai_stop(dev, 0); /* w/o unlink */
309 /* acquistion is over, tell comedi */
310 s->async->events |= COMEDI_CB_EOA;
311 comedi_event(dev, s);
316 /* get the data from the USB bus and hand it over to comedi */
317 for (i = 0; i < s->async->cmd.chanlist_len; i++) {
318 /* transfer data, note first byte is the DIO state */
319 val = be32_to_cpu(devpriv->in_buf[i+1]);
320 val &= 0x00ffffff; /* strip status byte */
321 val ^= 0x00800000; /* convert to unsigned */
323 ret = cfc_write_array_to_buffer(s, &val, sizeof(uint32_t));
324 if (unlikely(ret == 0)) {
325 /* buffer overflow */
326 usbduxsigma_ai_stop(dev, 0); /* w/o unlink */
330 /* tell comedi that data is there */
331 s->async->events |= (COMEDI_CB_BLOCK | COMEDI_CB_EOS);
332 comedi_event(dev, s);
335 static void usbduxsigma_ao_stop(struct comedi_device *dev, int do_unlink)
337 struct usbduxsigma_private *devpriv = dev->private;
339 if (do_unlink && devpriv->ao_urbs)
340 usbduxsigma_unlink_urbs(devpriv->ao_urbs, devpriv->n_ao_urbs);
342 devpriv->ao_cmd_running = 0;
345 static int usbduxsigma_ao_cancel(struct comedi_device *dev,
346 struct comedi_subdevice *s)
348 struct usbduxsigma_private *devpriv = dev->private;
351 /* unlink only if it is really running */
352 usbduxsigma_ao_stop(dev, devpriv->ao_cmd_running);
358 static void usbduxsigma_ao_urb_complete(struct urb *urb)
360 struct comedi_device *dev = urb->context;
361 struct usbduxsigma_private *devpriv = dev->private;
362 struct comedi_subdevice *s = dev->write_subdev;
368 switch (urb->status) {
377 /* happens after an unlink command */
378 if (devpriv->ao_cmd_running) {
379 usbduxsigma_ao_stop(dev, 0); /* w/o unlink */
380 s->async->events |= COMEDI_CB_EOA;
381 comedi_event(dev, s);
387 if (devpriv->ao_cmd_running) {
388 dev_err(dev->class_dev,
389 "%s: non-zero urb status (%d)\n",
390 __func__, urb->status);
391 usbduxsigma_ao_stop(dev, 0); /* w/o unlink */
392 s->async->events |= (COMEDI_CB_ERROR | COMEDI_CB_EOA);
393 comedi_event(dev, s);
398 if (!devpriv->ao_cmd_running)
401 devpriv->ao_counter--;
402 if ((int)devpriv->ao_counter <= 0) {
403 /* timer zero, transfer from comedi */
404 devpriv->ao_counter = devpriv->ao_timer;
406 if (!devpriv->ao_continuous) {
407 /* not continuous, fixed number of samples */
408 devpriv->ao_sample_count--;
409 if (devpriv->ao_sample_count < 0) {
410 usbduxsigma_ao_stop(dev, 0); /* w/o unlink */
411 /* acquistion is over, tell comedi */
412 s->async->events |= COMEDI_CB_EOA;
413 comedi_event(dev, s);
418 /* transmit data to the USB bus */
419 datap = urb->transfer_buffer;
420 len = s->async->cmd.chanlist_len;
422 for (i = 0; i < len; i++) {
423 unsigned int chan = devpriv->ao_chanlist[i];
426 ret = comedi_buf_get(s->async, &val);
428 dev_err(dev->class_dev, "buffer underflow\n");
429 s->async->events |= (COMEDI_CB_EOA |
434 devpriv->ao_readback[chan] = val;
436 s->async->events |= COMEDI_CB_BLOCK;
437 comedi_event(dev, s);
441 urb->transfer_buffer_length = SIZEOUTBUF;
442 urb->dev = comedi_to_usb_dev(dev);
444 if (devpriv->high_speed)
445 urb->interval = 8; /* uframes */
447 urb->interval = 1; /* frames */
448 urb->number_of_packets = 1;
449 urb->iso_frame_desc[0].offset = 0;
450 urb->iso_frame_desc[0].length = SIZEOUTBUF;
451 urb->iso_frame_desc[0].status = 0;
452 ret = usb_submit_urb(urb, GFP_ATOMIC);
454 dev_err(dev->class_dev,
455 "%s: urb resubmit failed (%d)\n",
458 dev_err(dev->class_dev,
459 "buggy USB host controller or bug in IRQ handler\n");
460 usbduxsigma_ao_stop(dev, 0); /* w/o unlink */
461 s->async->events |= (COMEDI_CB_EOA | COMEDI_CB_ERROR);
462 comedi_event(dev, s);
466 static int usbduxsigma_submit_urbs(struct comedi_device *dev,
467 struct urb **urbs, int num_urbs,
470 struct usb_device *usb = comedi_to_usb_dev(dev);
471 struct usbduxsigma_private *devpriv = dev->private;
476 /* Submit all URBs and start the transfer on the bus */
477 for (i = 0; i < num_urbs; i++) {
480 /* in case of a resubmission after an unlink... */
482 urb->interval = devpriv->ai_interval;
486 urb->transfer_flags = URB_ISO_ASAP;
488 ret = usb_submit_urb(urb, GFP_ATOMIC);
495 static int usbduxsigma_chans_to_interval(int num_chan)
504 static int usbduxsigma_ai_cmdtest(struct comedi_device *dev,
505 struct comedi_subdevice *s,
506 struct comedi_cmd *cmd)
508 struct usbduxsigma_private *devpriv = dev->private;
509 int high_speed = devpriv->high_speed;
510 int interval = usbduxsigma_chans_to_interval(cmd->chanlist_len);
513 /* Step 1 : check if triggers are trivially valid */
515 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
516 err |= cfc_check_trigger_src(&cmd->scan_begin_src, TRIG_TIMER);
517 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
518 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
519 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
524 /* Step 2a : make sure trigger sources are unique */
526 err |= cfc_check_trigger_is_unique(cmd->start_src);
527 err |= cfc_check_trigger_is_unique(cmd->stop_src);
529 /* Step 2b : and mutually compatible */
534 /* Step 3: check if arguments are trivially valid */
536 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
538 if (cmd->scan_begin_src == TRIG_FOLLOW) /* internal trigger */
539 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
541 if (cmd->scan_begin_src == TRIG_TIMER) {
546 * In high speed mode microframes are possible.
547 * However, during one microframe we can roughly
548 * sample two channels. Thus, the more channels
549 * are in the channel list the more time we need.
551 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
552 (1000000 / 8 * interval));
554 tmp = (cmd->scan_begin_arg / 125000) * 125000;
557 /* 1kHz scans every USB frame */
558 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
561 tmp = (cmd->scan_begin_arg / 1000000) * 1000000;
563 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, tmp);
566 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
568 if (cmd->stop_src == TRIG_COUNT) {
569 /* any count is allowed */
572 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
578 /* Step 4: fix up any arguments */
582 * every 2 channels get a time window of 125us. Thus, if we
583 * sample all 16 channels we need 1ms. If we sample only one
584 * channel we need only 125us
586 devpriv->ai_interval = interval;
587 devpriv->ai_timer = cmd->scan_begin_arg / (125000 * interval);
589 /* interval always 1ms */
590 devpriv->ai_interval = 1;
591 devpriv->ai_timer = cmd->scan_begin_arg / 1000000;
593 if (devpriv->ai_timer < 1)
596 if (cmd->stop_src == TRIG_COUNT) {
597 /* data arrives as one packet */
598 devpriv->ai_sample_count = cmd->stop_arg;
599 devpriv->ai_continuous = 0;
601 /* continuous acquisition */
602 devpriv->ai_continuous = 1;
603 devpriv->ai_sample_count = 0;
613 * creates the ADC command for the MAX1271
614 * range is the range value from comedi
616 static void create_adc_command(unsigned int chan,
621 (*muxsg0) = (*muxsg0) | (1 << chan);
623 (*muxsg1) = (*muxsg1) | (1 << (chan-8));
626 static int usbbuxsigma_send_cmd(struct comedi_device *dev, int cmd_type)
628 struct usb_device *usb = comedi_to_usb_dev(dev);
629 struct usbduxsigma_private *devpriv = dev->private;
632 devpriv->dux_commands[0] = cmd_type;
634 return usb_bulk_msg(usb, usb_sndbulkpipe(usb, 1),
635 devpriv->dux_commands, SIZEOFDUXBUFFER,
636 &nsent, BULK_TIMEOUT);
639 static int usbduxsigma_receive_cmd(struct comedi_device *dev, int command)
641 struct usb_device *usb = comedi_to_usb_dev(dev);
642 struct usbduxsigma_private *devpriv = dev->private;
647 for (i = 0; i < RETRIES; i++) {
648 ret = usb_bulk_msg(usb, usb_rcvbulkpipe(usb, 8),
649 devpriv->insn_buf, SIZEINSNBUF,
650 &nrec, BULK_TIMEOUT);
654 if (devpriv->insn_buf[0] == command)
658 * This is only reached if the data has been requested a
659 * couple of times and the command was not received.
664 static int usbduxsigma_ai_inttrig(struct comedi_device *dev,
665 struct comedi_subdevice *s,
666 unsigned int trignum)
668 struct usbduxsigma_private *devpriv = dev->private;
675 if (!devpriv->ai_cmd_running) {
676 devpriv->ai_cmd_running = 1;
677 ret = usbduxsigma_submit_urbs(dev, devpriv->ai_urbs,
678 devpriv->n_ai_urbs, 1);
680 devpriv->ai_cmd_running = 0;
684 s->async->inttrig = NULL;
691 static int usbduxsigma_ai_cmd(struct comedi_device *dev,
692 struct comedi_subdevice *s)
694 struct usbduxsigma_private *devpriv = dev->private;
695 struct comedi_cmd *cmd = &s->async->cmd;
696 unsigned int len = cmd->chanlist_len;
705 /* set current channel of the running acquisition to zero */
706 s->async->cur_chan = 0;
707 for (i = 0; i < len; i++) {
708 unsigned int chan = CR_CHAN(cmd->chanlist[i]);
710 create_adc_command(chan, &muxsg0, &muxsg1);
713 devpriv->dux_commands[1] = len; /* num channels per time step */
714 devpriv->dux_commands[2] = 0x12; /* CONFIG0 */
715 devpriv->dux_commands[3] = 0x03; /* CONFIG1: 23kHz sample, delay 0us */
716 devpriv->dux_commands[4] = 0x00; /* CONFIG3: diff. channels off */
717 devpriv->dux_commands[5] = muxsg0;
718 devpriv->dux_commands[6] = muxsg1;
719 devpriv->dux_commands[7] = sysred;
721 ret = usbbuxsigma_send_cmd(dev, USBBUXSIGMA_AD_CMD);
727 devpriv->ai_counter = devpriv->ai_timer;
729 if (cmd->start_src == TRIG_NOW) {
730 /* enable this acquisition operation */
731 devpriv->ai_cmd_running = 1;
732 ret = usbduxsigma_submit_urbs(dev, devpriv->ai_urbs,
733 devpriv->n_ai_urbs, 1);
735 devpriv->ai_cmd_running = 0;
739 s->async->inttrig = NULL;
740 } else { /* TRIG_INT */
741 /* wait for an internal signal and submit the urbs later */
742 s->async->inttrig = usbduxsigma_ai_inttrig;
750 static int usbduxsigma_ai_insn_read(struct comedi_device *dev,
751 struct comedi_subdevice *s,
752 struct comedi_insn *insn,
755 struct usbduxsigma_private *devpriv = dev->private;
756 unsigned int chan = CR_CHAN(insn->chanspec);
764 if (devpriv->ai_cmd_running) {
769 create_adc_command(chan, &muxsg0, &muxsg1);
771 /* Mode 0 is used to get a single conversion on demand */
772 devpriv->dux_commands[1] = 0x16; /* CONFIG0: chopper on */
773 devpriv->dux_commands[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
774 devpriv->dux_commands[3] = 0x00; /* CONFIG3: diff. channels off */
775 devpriv->dux_commands[4] = muxsg0;
776 devpriv->dux_commands[5] = muxsg1;
777 devpriv->dux_commands[6] = sysred;
780 ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
786 for (i = 0; i < insn->n; i++) {
789 ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
795 /* 32 bits big endian from the A/D converter */
796 val = be32_to_cpu(get_unaligned((uint32_t
797 *)(devpriv->insn_buf + 1)));
798 val &= 0x00ffffff; /* strip status byte */
799 val ^= 0x00800000; /* convert to unsigned */
808 static int usbduxsigma_ao_insn_read(struct comedi_device *dev,
809 struct comedi_subdevice *s,
810 struct comedi_insn *insn,
813 struct usbduxsigma_private *devpriv = dev->private;
814 unsigned int chan = CR_CHAN(insn->chanspec);
818 for (i = 0; i < insn->n; i++)
819 data[i] = devpriv->ao_readback[chan];
825 static int usbduxsigma_ao_insn_write(struct comedi_device *dev,
826 struct comedi_subdevice *s,
827 struct comedi_insn *insn,
830 struct usbduxsigma_private *devpriv = dev->private;
831 unsigned int chan = CR_CHAN(insn->chanspec);
836 if (devpriv->ao_cmd_running) {
841 for (i = 0; i < insn->n; i++) {
842 devpriv->dux_commands[1] = 1; /* num channels */
843 devpriv->dux_commands[2] = data[i]; /* value */
844 devpriv->dux_commands[3] = chan; /* channel number */
845 ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_DA_CMD);
850 devpriv->ao_readback[chan] = data[i];
857 static int usbduxsigma_ao_inttrig(struct comedi_device *dev,
858 struct comedi_subdevice *s,
859 unsigned int trignum)
861 struct usbduxsigma_private *devpriv = dev->private;
868 if (!devpriv->ao_cmd_running) {
869 devpriv->ao_cmd_running = 1;
870 ret = usbduxsigma_submit_urbs(dev, devpriv->ao_urbs,
871 devpriv->n_ao_urbs, 0);
873 devpriv->ao_cmd_running = 0;
877 s->async->inttrig = NULL;
884 static int usbduxsigma_ao_cmdtest(struct comedi_device *dev,
885 struct comedi_subdevice *s,
886 struct comedi_cmd *cmd)
888 struct usbduxsigma_private *devpriv = dev->private;
893 /* high speed conversions are not used yet */
894 high_speed = 0; /* (devpriv->high_speed) */
896 /* Step 1 : check if triggers are trivially valid */
898 err |= cfc_check_trigger_src(&cmd->start_src, TRIG_NOW | TRIG_INT);
902 * start immediately a new scan
903 * the sampling rate is set by the coversion rate
907 /* start a new scan (output at once) with a timer */
910 err |= cfc_check_trigger_src(&cmd->scan_begin_src, flags);
912 err |= cfc_check_trigger_src(&cmd->convert_src, TRIG_NOW);
913 err |= cfc_check_trigger_src(&cmd->scan_end_src, TRIG_COUNT);
914 err |= cfc_check_trigger_src(&cmd->stop_src, TRIG_COUNT | TRIG_NONE);
921 /* Step 2a : make sure trigger sources are unique */
923 err |= cfc_check_trigger_is_unique(cmd->start_src);
924 err |= cfc_check_trigger_is_unique(cmd->stop_src);
926 /* Step 2b : and mutually compatible */
931 /* Step 3: check if arguments are trivially valid */
933 err |= cfc_check_trigger_arg_is(&cmd->start_arg, 0);
935 if (cmd->scan_begin_src == TRIG_FOLLOW) /* internal trigger */
936 err |= cfc_check_trigger_arg_is(&cmd->scan_begin_arg, 0);
938 if (cmd->scan_begin_src == TRIG_TIMER)
939 err |= cfc_check_trigger_arg_min(&cmd->scan_begin_arg,
942 /* not used now, is for later use */
943 if (cmd->convert_src == TRIG_TIMER)
944 err |= cfc_check_trigger_arg_min(&cmd->convert_arg, 125000);
946 err |= cfc_check_trigger_arg_is(&cmd->scan_end_arg, cmd->chanlist_len);
948 if (cmd->stop_src == TRIG_COUNT) {
949 /* any count is allowed */
952 err |= cfc_check_trigger_arg_is(&cmd->stop_arg, 0);
958 /* Step 4: fix up any arguments */
960 /* we count in timer steps */
962 /* timing of the conversion itself: every 125 us */
963 devpriv->ao_timer = cmd->convert_arg / 125000;
966 * timing of the scan: every 1ms
967 * we get all channels at once
969 devpriv->ao_timer = cmd->scan_begin_arg / 1000000;
971 if (devpriv->ao_timer < 1)
974 if (cmd->stop_src == TRIG_COUNT) {
975 /* not continuous, use counter */
977 /* high speed also scans everything at once */
978 devpriv->ao_sample_count = cmd->stop_arg *
982 * There's no scan as the scan has been
983 * handled inside the FX2. Data arrives as
986 devpriv->ao_sample_count = cmd->stop_arg;
988 devpriv->ao_continuous = 0;
990 /* continuous acquisition */
991 devpriv->ao_continuous = 1;
992 devpriv->ao_sample_count = 0;
1001 static int usbduxsigma_ao_cmd(struct comedi_device *dev,
1002 struct comedi_subdevice *s)
1004 struct usbduxsigma_private *devpriv = dev->private;
1005 struct comedi_cmd *cmd = &s->async->cmd;
1009 down(&devpriv->sem);
1011 /* set current channel of the running acquisition to zero */
1012 s->async->cur_chan = 0;
1013 for (i = 0; i < cmd->chanlist_len; ++i)
1014 devpriv->ao_chanlist[i] = CR_CHAN(cmd->chanlist[i]);
1016 devpriv->ao_counter = devpriv->ao_timer;
1018 if (cmd->start_src == TRIG_NOW) {
1019 /* enable this acquisition operation */
1020 devpriv->ao_cmd_running = 1;
1021 ret = usbduxsigma_submit_urbs(dev, devpriv->ao_urbs,
1022 devpriv->n_ao_urbs, 0);
1024 devpriv->ao_cmd_running = 0;
1028 s->async->inttrig = NULL;
1029 } else { /* TRIG_INT */
1030 /* wait for an internal signal and submit the urbs later */
1031 s->async->inttrig = usbduxsigma_ao_inttrig;
1039 static int usbduxsigma_dio_insn_config(struct comedi_device *dev,
1040 struct comedi_subdevice *s,
1041 struct comedi_insn *insn,
1046 ret = comedi_dio_insn_config(dev, s, insn, data, 0);
1051 * We don't tell the firmware here as it would take 8 frames
1052 * to submit the information. We do it in the (*insn_bits).
1057 static int usbduxsigma_dio_insn_bits(struct comedi_device *dev,
1058 struct comedi_subdevice *s,
1059 struct comedi_insn *insn,
1062 struct usbduxsigma_private *devpriv = dev->private;
1065 down(&devpriv->sem);
1067 comedi_dio_update_state(s, data);
1069 /* Always update the hardware. See the (*insn_config). */
1070 devpriv->dux_commands[1] = s->io_bits & 0xff;
1071 devpriv->dux_commands[4] = s->state & 0xff;
1072 devpriv->dux_commands[2] = (s->io_bits >> 8) & 0xff;
1073 devpriv->dux_commands[5] = (s->state >> 8) & 0xff;
1074 devpriv->dux_commands[3] = (s->io_bits >> 16) & 0xff;
1075 devpriv->dux_commands[6] = (s->state >> 16) & 0xff;
1077 ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_DIO_BITS_CMD);
1080 ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_DIO_BITS_CMD);
1084 s->state = devpriv->insn_buf[1] |
1085 (devpriv->insn_buf[2] << 8) |
1086 (devpriv->insn_buf[3] << 16);
1097 static void usbduxsigma_pwm_stop(struct comedi_device *dev, int do_unlink)
1099 struct usbduxsigma_private *devpriv = dev->private;
1102 if (devpriv->pwm_urb)
1103 usb_kill_urb(devpriv->pwm_urb);
1106 devpriv->pwm_cmd_running = 0;
1109 static int usbduxsigma_pwm_cancel(struct comedi_device *dev,
1110 struct comedi_subdevice *s)
1112 struct usbduxsigma_private *devpriv = dev->private;
1114 /* unlink only if it is really running */
1115 usbduxsigma_pwm_stop(dev, devpriv->pwm_cmd_running);
1117 return usbbuxsigma_send_cmd(dev, USBDUXSIGMA_PWM_OFF_CMD);
1120 static void usbduxsigma_pwm_urb_complete(struct urb *urb)
1122 struct comedi_device *dev = urb->context;
1123 struct usbduxsigma_private *devpriv = dev->private;
1126 switch (urb->status) {
1135 /* happens after an unlink command */
1136 if (devpriv->pwm_cmd_running)
1137 usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
1142 if (devpriv->pwm_cmd_running) {
1143 dev_err(dev->class_dev,
1144 "%s: non-zero urb status (%d)\n",
1145 __func__, urb->status);
1146 usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
1151 if (!devpriv->pwm_cmd_running)
1154 urb->transfer_buffer_length = devpriv->pwm_buf_sz;
1155 urb->dev = comedi_to_usb_dev(dev);
1157 ret = usb_submit_urb(urb, GFP_ATOMIC);
1159 dev_err(dev->class_dev, "%s: urb resubmit failed (%d)\n",
1161 if (ret == EL2NSYNC)
1162 dev_err(dev->class_dev,
1163 "buggy USB host controller or bug in IRQ handler\n");
1164 usbduxsigma_pwm_stop(dev, 0); /* w/o unlink */
1168 static int usbduxsigma_submit_pwm_urb(struct comedi_device *dev)
1170 struct usb_device *usb = comedi_to_usb_dev(dev);
1171 struct usbduxsigma_private *devpriv = dev->private;
1172 struct urb *urb = devpriv->pwm_urb;
1174 /* in case of a resubmission after an unlink... */
1175 usb_fill_bulk_urb(urb, usb, usb_sndbulkpipe(usb, 4),
1176 urb->transfer_buffer, devpriv->pwm_buf_sz,
1177 usbduxsigma_pwm_urb_complete, dev);
1179 return usb_submit_urb(urb, GFP_ATOMIC);
1182 static int usbduxsigma_pwm_period(struct comedi_device *dev,
1183 struct comedi_subdevice *s,
1184 unsigned int period)
1186 struct usbduxsigma_private *devpriv = dev->private;
1189 if (period < MIN_PWM_PERIOD) {
1192 fx2delay = (period / (6 * 512 * 1000 / 33)) - 6;
1196 devpriv->pwm_delay = fx2delay;
1197 devpriv->pwm_period = period;
1201 static int usbduxsigma_pwm_start(struct comedi_device *dev,
1202 struct comedi_subdevice *s)
1204 struct usbduxsigma_private *devpriv = dev->private;
1207 if (devpriv->pwm_cmd_running)
1210 devpriv->dux_commands[1] = devpriv->pwm_delay;
1211 ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_PWM_ON_CMD);
1215 memset(devpriv->pwm_urb->transfer_buffer, 0, devpriv->pwm_buf_sz);
1217 devpriv->pwm_cmd_running = 1;
1218 ret = usbduxsigma_submit_pwm_urb(dev);
1220 devpriv->pwm_cmd_running = 0;
1227 static void usbduxsigma_pwm_pattern(struct comedi_device *dev,
1228 struct comedi_subdevice *s,
1233 struct usbduxsigma_private *devpriv = dev->private;
1234 char pwm_mask = (1 << chan); /* DIO bit for the PWM data */
1235 char sgn_mask = (16 << chan); /* DIO bit for the sign */
1236 char *buf = (char *)(devpriv->pwm_urb->transfer_buffer);
1237 int szbuf = devpriv->pwm_buf_sz;
1240 for (i = 0; i < szbuf; i++) {
1254 static int usbduxsigma_pwm_write(struct comedi_device *dev,
1255 struct comedi_subdevice *s,
1256 struct comedi_insn *insn,
1259 unsigned int chan = CR_CHAN(insn->chanspec);
1262 * It doesn't make sense to support more than one value here
1263 * because it would just overwrite the PWM buffer.
1269 * The sign is set via a special INSN only, this gives us 8 bits
1270 * for normal operation, sign is 0 by default.
1272 usbduxsigma_pwm_pattern(dev, s, chan, data[0], 0);
1277 static int usbduxsigma_pwm_config(struct comedi_device *dev,
1278 struct comedi_subdevice *s,
1279 struct comedi_insn *insn,
1282 struct usbduxsigma_private *devpriv = dev->private;
1283 unsigned int chan = CR_CHAN(insn->chanspec);
1286 case INSN_CONFIG_ARM:
1288 * if not zero the PWM is limited to a certain time which is
1289 * not supported here
1293 return usbduxsigma_pwm_start(dev, s);
1294 case INSN_CONFIG_DISARM:
1295 return usbduxsigma_pwm_cancel(dev, s);
1296 case INSN_CONFIG_GET_PWM_STATUS:
1297 data[1] = devpriv->pwm_cmd_running;
1299 case INSN_CONFIG_PWM_SET_PERIOD:
1300 return usbduxsigma_pwm_period(dev, s, data[1]);
1301 case INSN_CONFIG_PWM_GET_PERIOD:
1302 data[1] = devpriv->pwm_period;
1304 case INSN_CONFIG_PWM_SET_H_BRIDGE:
1307 * data[2] = sign (for a relay)
1309 usbduxsigma_pwm_pattern(dev, s, chan, data[1], (data[2] != 0));
1311 case INSN_CONFIG_PWM_GET_H_BRIDGE:
1312 /* values are not kept in this driver, nothing to return */
1318 static int usbduxsigma_getstatusinfo(struct comedi_device *dev, int chan)
1320 struct usbduxsigma_private *devpriv = dev->private;
1328 sysred = 0; /* ADC zero */
1331 sysred = 1; /* ADC offset */
1334 sysred = 4; /* VCC */
1337 sysred = 8; /* temperature */
1340 sysred = 16; /* gain */
1343 sysred = 32; /* ref */
1347 devpriv->dux_commands[1] = 0x12; /* CONFIG0 */
1348 devpriv->dux_commands[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
1349 devpriv->dux_commands[3] = 0x00; /* CONFIG3: diff. channels off */
1350 devpriv->dux_commands[4] = 0;
1351 devpriv->dux_commands[5] = 0;
1352 devpriv->dux_commands[6] = sysred;
1353 ret = usbbuxsigma_send_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
1357 ret = usbduxsigma_receive_cmd(dev, USBDUXSIGMA_SINGLE_AD_CMD);
1361 /* 32 bits big endian from the A/D converter */
1362 val = be32_to_cpu(get_unaligned((uint32_t *)(devpriv->insn_buf + 1)));
1363 val &= 0x00ffffff; /* strip status byte */
1364 val ^= 0x00800000; /* convert to unsigned */
1369 static int usbduxsigma_firmware_upload(struct comedi_device *dev,
1370 const u8 *data, size_t size,
1371 unsigned long context)
1373 struct usb_device *usb = comedi_to_usb_dev(dev);
1381 if (size > FIRMWARE_MAX_LEN) {
1382 dev_err(dev->class_dev, "firmware binary too large for FX2\n");
1386 /* we generate a local buffer for the firmware */
1387 buf = kmemdup(data, size, GFP_KERNEL);
1391 /* we need a malloc'ed buffer for usb_control_msg() */
1392 tmp = kmalloc(1, GFP_KERNEL);
1398 /* stop the current firmware on the device */
1399 *tmp = 1; /* 7f92 to one */
1400 ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
1403 USBDUXSUB_CPUCS, 0x0000,
1407 dev_err(dev->class_dev, "can not stop firmware\n");
1411 /* upload the new firmware to the device */
1412 ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
1419 dev_err(dev->class_dev, "firmware upload failed\n");
1423 /* start the new firmware on the device */
1424 *tmp = 0; /* 7f92 to zero */
1425 ret = usb_control_msg(usb, usb_sndctrlpipe(usb, 0),
1428 USBDUXSUB_CPUCS, 0x0000,
1432 dev_err(dev->class_dev, "can not start firmware\n");
1440 static int usbduxsigma_alloc_usb_buffers(struct comedi_device *dev)
1442 struct usb_device *usb = comedi_to_usb_dev(dev);
1443 struct usbduxsigma_private *devpriv = dev->private;
1447 devpriv->dux_commands = kzalloc(SIZEOFDUXBUFFER, GFP_KERNEL);
1448 devpriv->in_buf = kzalloc(SIZEINBUF, GFP_KERNEL);
1449 devpriv->insn_buf = kzalloc(SIZEINSNBUF, GFP_KERNEL);
1450 devpriv->ai_urbs = kcalloc(devpriv->n_ai_urbs, sizeof(*urb),
1452 devpriv->ao_urbs = kcalloc(devpriv->n_ao_urbs, sizeof(*urb),
1454 if (!devpriv->dux_commands || !devpriv->in_buf || !devpriv->insn_buf ||
1455 !devpriv->ai_urbs || !devpriv->ao_urbs)
1458 for (i = 0; i < devpriv->n_ai_urbs; i++) {
1459 /* one frame: 1ms */
1460 urb = usb_alloc_urb(1, GFP_KERNEL);
1463 devpriv->ai_urbs[i] = urb;
1465 /* will be filled later with a pointer to the comedi-device */
1466 /* and ONLY then the urb should be submitted */
1467 urb->context = NULL;
1468 urb->pipe = usb_rcvisocpipe(usb, 6);
1469 urb->transfer_flags = URB_ISO_ASAP;
1470 urb->transfer_buffer = kzalloc(SIZEINBUF, GFP_KERNEL);
1471 if (!urb->transfer_buffer)
1473 urb->complete = usbduxsigma_ai_urb_complete;
1474 urb->number_of_packets = 1;
1475 urb->transfer_buffer_length = SIZEINBUF;
1476 urb->iso_frame_desc[0].offset = 0;
1477 urb->iso_frame_desc[0].length = SIZEINBUF;
1480 for (i = 0; i < devpriv->n_ao_urbs; i++) {
1481 /* one frame: 1ms */
1482 urb = usb_alloc_urb(1, GFP_KERNEL);
1485 devpriv->ao_urbs[i] = urb;
1487 /* will be filled later with a pointer to the comedi-device */
1488 /* and ONLY then the urb should be submitted */
1489 urb->context = NULL;
1490 urb->pipe = usb_sndisocpipe(usb, 2);
1491 urb->transfer_flags = URB_ISO_ASAP;
1492 urb->transfer_buffer = kzalloc(SIZEOUTBUF, GFP_KERNEL);
1493 if (!urb->transfer_buffer)
1495 urb->complete = usbduxsigma_ao_urb_complete;
1496 urb->number_of_packets = 1;
1497 urb->transfer_buffer_length = SIZEOUTBUF;
1498 urb->iso_frame_desc[0].offset = 0;
1499 urb->iso_frame_desc[0].length = SIZEOUTBUF;
1500 if (devpriv->high_speed)
1501 urb->interval = 8; /* uframes */
1503 urb->interval = 1; /* frames */
1506 if (devpriv->pwm_buf_sz) {
1507 urb = usb_alloc_urb(0, GFP_KERNEL);
1510 devpriv->pwm_urb = urb;
1512 urb->transfer_buffer = kzalloc(devpriv->pwm_buf_sz,
1514 if (!urb->transfer_buffer)
1521 static void usbduxsigma_free_usb_buffers(struct comedi_device *dev)
1523 struct usbduxsigma_private *devpriv = dev->private;
1527 urb = devpriv->pwm_urb;
1529 kfree(urb->transfer_buffer);
1532 if (devpriv->ao_urbs) {
1533 for (i = 0; i < devpriv->n_ao_urbs; i++) {
1534 urb = devpriv->ao_urbs[i];
1536 kfree(urb->transfer_buffer);
1540 kfree(devpriv->ao_urbs);
1542 if (devpriv->ai_urbs) {
1543 for (i = 0; i < devpriv->n_ai_urbs; i++) {
1544 urb = devpriv->ai_urbs[i];
1546 kfree(urb->transfer_buffer);
1550 kfree(devpriv->ai_urbs);
1552 kfree(devpriv->insn_buf);
1553 kfree(devpriv->in_buf);
1554 kfree(devpriv->dux_commands);
1557 static int usbduxsigma_auto_attach(struct comedi_device *dev,
1558 unsigned long context_unused)
1560 struct usb_interface *intf = comedi_to_usb_interface(dev);
1561 struct usb_device *usb = comedi_to_usb_dev(dev);
1562 struct usbduxsigma_private *devpriv;
1563 struct comedi_subdevice *s;
1567 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
1571 sema_init(&devpriv->sem, 1);
1573 usb_set_intfdata(intf, devpriv);
1575 devpriv->high_speed = (usb->speed == USB_SPEED_HIGH);
1576 if (devpriv->high_speed) {
1577 devpriv->n_ai_urbs = NUMOFINBUFFERSHIGH;
1578 devpriv->n_ao_urbs = NUMOFOUTBUFFERSHIGH;
1579 devpriv->pwm_buf_sz = 512;
1581 devpriv->n_ai_urbs = NUMOFINBUFFERSFULL;
1582 devpriv->n_ao_urbs = NUMOFOUTBUFFERSFULL;
1585 ret = usbduxsigma_alloc_usb_buffers(dev);
1589 /* setting to alternate setting 3: enabling iso ep and bulk ep. */
1590 ret = usb_set_interface(usb, intf->altsetting->desc.bInterfaceNumber,
1593 dev_err(dev->class_dev,
1594 "could not set alternate setting 3 in high speed\n");
1598 ret = comedi_load_firmware(dev, &usb->dev, FIRMWARE,
1599 usbduxsigma_firmware_upload, 0);
1603 ret = comedi_alloc_subdevices(dev, (devpriv->high_speed) ? 4 : 3);
1607 /* Analog Input subdevice */
1608 s = &dev->subdevices[0];
1609 dev->read_subdev = s;
1610 s->type = COMEDI_SUBD_AI;
1611 s->subdev_flags = SDF_READABLE | SDF_GROUND | SDF_CMD_READ | SDF_LSAMPL;
1612 s->n_chan = NUMCHANNELS;
1613 s->len_chanlist = NUMCHANNELS;
1614 s->maxdata = 0x00ffffff;
1615 s->range_table = &usbduxsigma_ai_range;
1616 s->insn_read = usbduxsigma_ai_insn_read;
1617 s->do_cmdtest = usbduxsigma_ai_cmdtest;
1618 s->do_cmd = usbduxsigma_ai_cmd;
1619 s->cancel = usbduxsigma_ai_cancel;
1621 /* Analog Output subdevice */
1622 s = &dev->subdevices[1];
1623 dev->write_subdev = s;
1624 s->type = COMEDI_SUBD_AO;
1625 s->subdev_flags = SDF_WRITABLE | SDF_GROUND | SDF_CMD_WRITE;
1626 s->n_chan = USBDUXSIGMA_NUM_AO_CHAN;
1627 s->len_chanlist = s->n_chan;
1628 s->maxdata = 0x00ff;
1629 s->range_table = &range_unipolar2_5;
1630 s->insn_write = usbduxsigma_ao_insn_write;
1631 s->insn_read = usbduxsigma_ao_insn_read;
1632 s->do_cmdtest = usbduxsigma_ao_cmdtest;
1633 s->do_cmd = usbduxsigma_ao_cmd;
1634 s->cancel = usbduxsigma_ao_cancel;
1636 /* Digital I/O subdevice */
1637 s = &dev->subdevices[2];
1638 s->type = COMEDI_SUBD_DIO;
1639 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
1642 s->range_table = &range_digital;
1643 s->insn_bits = usbduxsigma_dio_insn_bits;
1644 s->insn_config = usbduxsigma_dio_insn_config;
1646 if (devpriv->high_speed) {
1647 /* Timer / pwm subdevice */
1648 s = &dev->subdevices[3];
1649 s->type = COMEDI_SUBD_PWM;
1650 s->subdev_flags = SDF_WRITABLE | SDF_PWM_HBRIDGE;
1652 s->maxdata = devpriv->pwm_buf_sz;
1653 s->insn_write = usbduxsigma_pwm_write;
1654 s->insn_config = usbduxsigma_pwm_config;
1656 usbduxsigma_pwm_period(dev, s, PWM_DEFAULT_PERIOD);
1659 offset = usbduxsigma_getstatusinfo(dev, 0);
1661 dev_err(dev->class_dev,
1662 "Communication to USBDUXSIGMA failed! Check firmware and cabling.\n");
1666 dev_info(dev->class_dev, "ADC_zero = %x\n", offset);
1671 static void usbduxsigma_detach(struct comedi_device *dev)
1673 struct usb_interface *intf = comedi_to_usb_interface(dev);
1674 struct usbduxsigma_private *devpriv = dev->private;
1676 usb_set_intfdata(intf, NULL);
1681 down(&devpriv->sem);
1683 /* force unlink all urbs */
1684 usbduxsigma_ai_stop(dev, 1);
1685 usbduxsigma_ao_stop(dev, 1);
1686 usbduxsigma_pwm_stop(dev, 1);
1688 usbduxsigma_free_usb_buffers(dev);
1693 static struct comedi_driver usbduxsigma_driver = {
1694 .driver_name = "usbduxsigma",
1695 .module = THIS_MODULE,
1696 .auto_attach = usbduxsigma_auto_attach,
1697 .detach = usbduxsigma_detach,
1700 static int usbduxsigma_usb_probe(struct usb_interface *intf,
1701 const struct usb_device_id *id)
1703 return comedi_usb_auto_config(intf, &usbduxsigma_driver, 0);
1706 static const struct usb_device_id usbduxsigma_usb_table[] = {
1707 { USB_DEVICE(0x13d8, 0x0020) },
1708 { USB_DEVICE(0x13d8, 0x0021) },
1709 { USB_DEVICE(0x13d8, 0x0022) },
1712 MODULE_DEVICE_TABLE(usb, usbduxsigma_usb_table);
1714 static struct usb_driver usbduxsigma_usb_driver = {
1715 .name = "usbduxsigma",
1716 .probe = usbduxsigma_usb_probe,
1717 .disconnect = comedi_usb_auto_unconfig,
1718 .id_table = usbduxsigma_usb_table,
1720 module_comedi_usb_driver(usbduxsigma_driver, usbduxsigma_usb_driver);
1722 MODULE_AUTHOR("Bernd Porr, BerndPorr@f2s.com");
1723 MODULE_DESCRIPTION("Stirling/ITL USB-DUX SIGMA -- Bernd.Porr@f2s.com");
1724 MODULE_LICENSE("GPL");
1725 MODULE_FIRMWARE(FIRMWARE);