1 // SPDX-License-Identifier: GPL-2.0+
4 * Copyright (C) 2011-2015 Bernd Porr, mail@berndporr.me.uk
9 * Description: University of Stirling USB DAQ & INCITE Technology Limited
10 * Devices: [ITL] USB-DUX-SIGMA (usbduxsigma)
11 * Author: Bernd Porr <mail@berndporr.me.uk>
12 * Updated: 20 July 2015
17 * I must give credit here to Chris Baugher who
18 * wrote the driver for AT-MIO-16d. I used some parts of this
19 * driver. I also must give credits to David Brownell
20 * who supported me with the USB development.
22 * Note: the raw data from the A/D converter is 24 bit big endian
23 * anything else is little endian to/from the dux board
27 * 0.1: initial version
28 * 0.2: all basic functions implemented, digital I/O only for one port
29 * 0.3: proper vendor ID and driver name
30 * 0.4: fixed D/A voltage range
31 * 0.5: various bug fixes, health check at startup
32 * 0.6: corrected wrong input range
33 * 0.7: rewrite code that urb->interval is always 1
36 #include <linux/kernel.h>
37 #include <linux/module.h>
38 #include <linux/slab.h>
39 #include <linux/input.h>
40 #include <linux/fcntl.h>
41 #include <linux/compiler.h>
42 #include <asm/unaligned.h>
44 #include "../comedi_usb.h"
46 /* timeout for the USB-transfer in ms*/
47 #define BULK_TIMEOUT 1000
49 /* constants for "firmware" upload and download */
50 #define FIRMWARE "usbduxsigma_firmware.bin"
51 #define FIRMWARE_MAX_LEN 0x4000
52 #define USBDUXSUB_FIRMWARE 0xa0
53 #define VENDOR_DIR_IN 0xc0
54 #define VENDOR_DIR_OUT 0x40
56 /* internal addresses of the 8051 processor */
57 #define USBDUXSUB_CPUCS 0xE600
59 /* 300Hz max frequ under PWM */
60 #define MIN_PWM_PERIOD ((long)(1E9 / 300))
62 /* Default PWM frequency */
63 #define PWM_DEFAULT_PERIOD ((long)(1E9 / 100))
65 /* Number of channels (16 AD and offset)*/
66 #define NUMCHANNELS 16
68 /* Size of one A/D value */
69 #define SIZEADIN ((sizeof(u32)))
72 * Size of the async input-buffer IN BYTES, the DIO state is transmitted
75 #define SIZEINBUF (((NUMCHANNELS + 1) * SIZEADIN))
78 #define SIZEINSNBUF 16
80 /* Number of DA channels */
81 #define NUMOUTCHANNELS 8
83 /* size of one value for the D/A converter: channel and value */
84 #define SIZEDAOUT ((sizeof(u8) + sizeof(uint16_t)))
87 * Size of the output-buffer in bytes
88 * Actually only the first 4 triplets are used but for the
89 * high speed mode we need to pad it to 8 (microframes).
91 #define SIZEOUTBUF ((8 * SIZEDAOUT))
94 * Size of the buffer for the dux commands: just now max size is determined
95 * by the analogue out + command byte + panic bytes...
97 #define SIZEOFDUXBUFFER ((8 * SIZEDAOUT + 2))
99 /* Number of in-URBs which receive the data: min=2 */
100 #define NUMOFINBUFFERSFULL 5
102 /* Number of out-URBs which send the data: min=2 */
103 #define NUMOFOUTBUFFERSFULL 5
105 /* Number of in-URBs which receive the data: min=5 */
106 /* must have more buffers due to buggy USB ctr */
107 #define NUMOFINBUFFERSHIGH 10
109 /* Number of out-URBs which send the data: min=5 */
110 /* must have more buffers due to buggy USB ctr */
111 #define NUMOFOUTBUFFERSHIGH 10
113 /* number of retries to get the right dux command */
116 /* bulk transfer commands to usbduxsigma */
117 #define USBBUXSIGMA_AD_CMD 9
118 #define USBDUXSIGMA_DA_CMD 1
119 #define USBDUXSIGMA_DIO_CFG_CMD 2
120 #define USBDUXSIGMA_DIO_BITS_CMD 3
121 #define USBDUXSIGMA_SINGLE_AD_CMD 4
122 #define USBDUXSIGMA_PWM_ON_CMD 7
123 #define USBDUXSIGMA_PWM_OFF_CMD 8
125 static const struct comedi_lrange usbduxsigma_ai_range
= {
127 BIP_RANGE(2.5 * 0x800000 / 0x780000 / 2.0)
131 struct usbduxsigma_private
{
132 /* actual number of in-buffers */
134 /* actual number of out-buffers */
136 /* ISO-transfer handling: buffers */
137 struct urb
**ai_urbs
;
138 struct urb
**ao_urbs
;
139 /* pwm-transfer handling */
142 unsigned int pwm_period
;
143 /* PWM internal delay for the GPIF in the FX2 */
145 /* size of the PWM buffer which holds the bit pattern */
147 /* input buffer for the ISO-transfer */
149 /* input buffer for single insn */
152 unsigned high_speed
:1;
153 unsigned ai_cmd_running
:1;
154 unsigned ao_cmd_running
:1;
155 unsigned pwm_cmd_running
:1;
157 /* time between samples in units of the timer */
158 unsigned int ai_timer
;
159 unsigned int ao_timer
;
160 /* counter between acquisitions */
161 unsigned int ai_counter
;
162 unsigned int ao_counter
;
163 /* interval in frames/uframes */
164 unsigned int ai_interval
;
170 static void usbduxsigma_unlink_urbs(struct urb
**urbs
, int num_urbs
)
174 for (i
= 0; i
< num_urbs
; i
++)
175 usb_kill_urb(urbs
[i
]);
178 static void usbduxsigma_ai_stop(struct comedi_device
*dev
, int do_unlink
)
180 struct usbduxsigma_private
*devpriv
= dev
->private;
182 if (do_unlink
&& devpriv
->ai_urbs
)
183 usbduxsigma_unlink_urbs(devpriv
->ai_urbs
, devpriv
->n_ai_urbs
);
185 devpriv
->ai_cmd_running
= 0;
188 static int usbduxsigma_ai_cancel(struct comedi_device
*dev
,
189 struct comedi_subdevice
*s
)
191 struct usbduxsigma_private
*devpriv
= dev
->private;
193 mutex_lock(&devpriv
->mut
);
194 /* unlink only if it is really running */
195 usbduxsigma_ai_stop(dev
, devpriv
->ai_cmd_running
);
196 mutex_unlock(&devpriv
->mut
);
201 static void usbduxsigma_ai_handle_urb(struct comedi_device
*dev
,
202 struct comedi_subdevice
*s
,
205 struct usbduxsigma_private
*devpriv
= dev
->private;
206 struct comedi_async
*async
= s
->async
;
207 struct comedi_cmd
*cmd
= &async
->cmd
;
212 if ((urb
->actual_length
> 0) && (urb
->status
!= -EXDEV
)) {
213 devpriv
->ai_counter
--;
214 if (devpriv
->ai_counter
== 0) {
215 devpriv
->ai_counter
= devpriv
->ai_timer
;
218 * Get the data from the USB bus and hand it over
219 * to comedi. Note, first byte is the DIO state.
221 for (i
= 0; i
< cmd
->chanlist_len
; i
++) {
222 val
= be32_to_cpu(devpriv
->in_buf
[i
+ 1]);
223 val
&= 0x00ffffff; /* strip status byte */
224 val
= comedi_offset_munge(s
, val
);
225 if (!comedi_buf_write_samples(s
, &val
, 1))
229 if (cmd
->stop_src
== TRIG_COUNT
&&
230 async
->scans_done
>= cmd
->stop_arg
)
231 async
->events
|= COMEDI_CB_EOA
;
235 /* if command is still running, resubmit urb */
236 if (!(async
->events
& COMEDI_CB_CANCEL_MASK
)) {
237 urb
->dev
= comedi_to_usb_dev(dev
);
238 ret
= usb_submit_urb(urb
, GFP_ATOMIC
);
240 dev_err(dev
->class_dev
, "urb resubmit failed (%d)\n",
242 if (ret
== -EL2NSYNC
)
243 dev_err(dev
->class_dev
,
244 "buggy USB host controller or bug in IRQ handler\n");
245 async
->events
|= COMEDI_CB_ERROR
;
250 static void usbduxsigma_ai_urb_complete(struct urb
*urb
)
252 struct comedi_device
*dev
= urb
->context
;
253 struct usbduxsigma_private
*devpriv
= dev
->private;
254 struct comedi_subdevice
*s
= dev
->read_subdev
;
255 struct comedi_async
*async
= s
->async
;
257 /* exit if not running a command, do not resubmit urb */
258 if (!devpriv
->ai_cmd_running
)
261 switch (urb
->status
) {
263 /* copy the result in the transfer buffer */
264 memcpy(devpriv
->in_buf
, urb
->transfer_buffer
, SIZEINBUF
);
265 usbduxsigma_ai_handle_urb(dev
, s
, urb
);
270 * error in the ISOchronous data
271 * we don't copy the data into the transfer buffer
272 * and recycle the last data byte
274 dev_dbg(dev
->class_dev
, "CRC error in ISO IN stream\n");
275 usbduxsigma_ai_handle_urb(dev
, s
, urb
);
282 /* happens after an unlink command */
283 async
->events
|= COMEDI_CB_ERROR
;
288 dev_err(dev
->class_dev
, "non-zero urb status (%d)\n",
290 async
->events
|= COMEDI_CB_ERROR
;
295 * comedi_handle_events() cannot be used in this driver. The (*cancel)
296 * operation would unlink the urb.
298 if (async
->events
& COMEDI_CB_CANCEL_MASK
)
299 usbduxsigma_ai_stop(dev
, 0);
301 comedi_event(dev
, s
);
304 static void usbduxsigma_ao_stop(struct comedi_device
*dev
, int do_unlink
)
306 struct usbduxsigma_private
*devpriv
= dev
->private;
308 if (do_unlink
&& devpriv
->ao_urbs
)
309 usbduxsigma_unlink_urbs(devpriv
->ao_urbs
, devpriv
->n_ao_urbs
);
311 devpriv
->ao_cmd_running
= 0;
314 static int usbduxsigma_ao_cancel(struct comedi_device
*dev
,
315 struct comedi_subdevice
*s
)
317 struct usbduxsigma_private
*devpriv
= dev
->private;
319 mutex_lock(&devpriv
->mut
);
320 /* unlink only if it is really running */
321 usbduxsigma_ao_stop(dev
, devpriv
->ao_cmd_running
);
322 mutex_unlock(&devpriv
->mut
);
327 static void usbduxsigma_ao_handle_urb(struct comedi_device
*dev
,
328 struct comedi_subdevice
*s
,
331 struct usbduxsigma_private
*devpriv
= dev
->private;
332 struct comedi_async
*async
= s
->async
;
333 struct comedi_cmd
*cmd
= &async
->cmd
;
338 devpriv
->ao_counter
--;
339 if (devpriv
->ao_counter
== 0) {
340 devpriv
->ao_counter
= devpriv
->ao_timer
;
342 if (cmd
->stop_src
== TRIG_COUNT
&&
343 async
->scans_done
>= cmd
->stop_arg
) {
344 async
->events
|= COMEDI_CB_EOA
;
348 /* transmit data to the USB bus */
349 datap
= urb
->transfer_buffer
;
350 *datap
++ = cmd
->chanlist_len
;
351 for (i
= 0; i
< cmd
->chanlist_len
; i
++) {
352 unsigned int chan
= CR_CHAN(cmd
->chanlist
[i
]);
355 if (!comedi_buf_read_samples(s
, &val
, 1)) {
356 dev_err(dev
->class_dev
, "buffer underflow\n");
357 async
->events
|= COMEDI_CB_OVERFLOW
;
363 s
->readback
[chan
] = val
;
367 /* if command is still running, resubmit urb */
368 if (!(async
->events
& COMEDI_CB_CANCEL_MASK
)) {
369 urb
->transfer_buffer_length
= SIZEOUTBUF
;
370 urb
->dev
= comedi_to_usb_dev(dev
);
372 urb
->interval
= 1; /* (u)frames */
373 urb
->number_of_packets
= 1;
374 urb
->iso_frame_desc
[0].offset
= 0;
375 urb
->iso_frame_desc
[0].length
= SIZEOUTBUF
;
376 urb
->iso_frame_desc
[0].status
= 0;
377 ret
= usb_submit_urb(urb
, GFP_ATOMIC
);
379 dev_err(dev
->class_dev
, "urb resubmit failed (%d)\n",
381 if (ret
== -EL2NSYNC
)
382 dev_err(dev
->class_dev
,
383 "buggy USB host controller or bug in IRQ handler\n");
384 async
->events
|= COMEDI_CB_ERROR
;
389 static void usbduxsigma_ao_urb_complete(struct urb
*urb
)
391 struct comedi_device
*dev
= urb
->context
;
392 struct usbduxsigma_private
*devpriv
= dev
->private;
393 struct comedi_subdevice
*s
= dev
->write_subdev
;
394 struct comedi_async
*async
= s
->async
;
396 /* exit if not running a command, do not resubmit urb */
397 if (!devpriv
->ao_cmd_running
)
400 switch (urb
->status
) {
402 usbduxsigma_ao_handle_urb(dev
, s
, urb
);
409 /* happens after an unlink command */
410 async
->events
|= COMEDI_CB_ERROR
;
415 dev_err(dev
->class_dev
, "non-zero urb status (%d)\n",
417 async
->events
|= COMEDI_CB_ERROR
;
422 * comedi_handle_events() cannot be used in this driver. The (*cancel)
423 * operation would unlink the urb.
425 if (async
->events
& COMEDI_CB_CANCEL_MASK
)
426 usbduxsigma_ao_stop(dev
, 0);
428 comedi_event(dev
, s
);
431 static int usbduxsigma_submit_urbs(struct comedi_device
*dev
,
432 struct urb
**urbs
, int num_urbs
,
435 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
440 /* Submit all URBs and start the transfer on the bus */
441 for (i
= 0; i
< num_urbs
; i
++) {
444 /* in case of a resubmission after an unlink... */
450 urb
->transfer_flags
= URB_ISO_ASAP
;
452 ret
= usb_submit_urb(urb
, GFP_ATOMIC
);
459 static int usbduxsigma_chans_to_interval(int num_chan
)
468 static int usbduxsigma_ai_cmdtest(struct comedi_device
*dev
,
469 struct comedi_subdevice
*s
,
470 struct comedi_cmd
*cmd
)
472 struct usbduxsigma_private
*devpriv
= dev
->private;
473 int high_speed
= devpriv
->high_speed
;
474 int interval
= usbduxsigma_chans_to_interval(cmd
->chanlist_len
);
478 /* Step 1 : check if triggers are trivially valid */
480 err
|= comedi_check_trigger_src(&cmd
->start_src
, TRIG_NOW
| TRIG_INT
);
481 err
|= comedi_check_trigger_src(&cmd
->scan_begin_src
, TRIG_TIMER
);
482 err
|= comedi_check_trigger_src(&cmd
->convert_src
, TRIG_NOW
);
483 err
|= comedi_check_trigger_src(&cmd
->scan_end_src
, TRIG_COUNT
);
484 err
|= comedi_check_trigger_src(&cmd
->stop_src
, TRIG_COUNT
| TRIG_NONE
);
489 /* Step 2a : make sure trigger sources are unique */
491 err
|= comedi_check_trigger_is_unique(cmd
->start_src
);
492 err
|= comedi_check_trigger_is_unique(cmd
->stop_src
);
494 /* Step 2b : and mutually compatible */
499 /* Step 3: check if arguments are trivially valid */
501 err
|= comedi_check_trigger_arg_is(&cmd
->start_arg
, 0);
505 * In high speed mode microframes are possible.
506 * However, during one microframe we can roughly
507 * sample two channels. Thus, the more channels
508 * are in the channel list the more time we need.
510 err
|= comedi_check_trigger_arg_min(&cmd
->scan_begin_arg
,
511 (125000 * interval
));
514 /* 1kHz scans every USB frame */
515 err
|= comedi_check_trigger_arg_min(&cmd
->scan_begin_arg
,
519 err
|= comedi_check_trigger_arg_is(&cmd
->scan_end_arg
,
522 if (cmd
->stop_src
== TRIG_COUNT
)
523 err
|= comedi_check_trigger_arg_min(&cmd
->stop_arg
, 1);
525 err
|= comedi_check_trigger_arg_is(&cmd
->stop_arg
, 0);
530 /* Step 4: fix up any arguments */
532 tmp
= rounddown(cmd
->scan_begin_arg
, high_speed
? 125000 : 1000000);
533 err
|= comedi_check_trigger_arg_is(&cmd
->scan_begin_arg
, tmp
);
542 * creates the ADC command for the MAX1271
543 * range is the range value from comedi
545 static void create_adc_command(unsigned int chan
,
546 u8
*muxsg0
, u8
*muxsg1
)
549 (*muxsg0
) = (*muxsg0
) | (1 << chan
);
551 (*muxsg1
) = (*muxsg1
) | (1 << (chan
- 8));
554 static int usbbuxsigma_send_cmd(struct comedi_device
*dev
, int cmd_type
)
556 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
557 struct usbduxsigma_private
*devpriv
= dev
->private;
560 devpriv
->dux_commands
[0] = cmd_type
;
562 return usb_bulk_msg(usb
, usb_sndbulkpipe(usb
, 1),
563 devpriv
->dux_commands
, SIZEOFDUXBUFFER
,
564 &nsent
, BULK_TIMEOUT
);
567 static int usbduxsigma_receive_cmd(struct comedi_device
*dev
, int command
)
569 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
570 struct usbduxsigma_private
*devpriv
= dev
->private;
575 for (i
= 0; i
< RETRIES
; i
++) {
576 ret
= usb_bulk_msg(usb
, usb_rcvbulkpipe(usb
, 8),
577 devpriv
->insn_buf
, SIZEINSNBUF
,
578 &nrec
, BULK_TIMEOUT
);
582 if (devpriv
->insn_buf
[0] == command
)
586 * This is only reached if the data has been requested a
587 * couple of times and the command was not received.
592 static int usbduxsigma_ai_inttrig(struct comedi_device
*dev
,
593 struct comedi_subdevice
*s
,
594 unsigned int trig_num
)
596 struct usbduxsigma_private
*devpriv
= dev
->private;
597 struct comedi_cmd
*cmd
= &s
->async
->cmd
;
600 if (trig_num
!= cmd
->start_arg
)
603 mutex_lock(&devpriv
->mut
);
604 if (!devpriv
->ai_cmd_running
) {
605 devpriv
->ai_cmd_running
= 1;
606 ret
= usbduxsigma_submit_urbs(dev
, devpriv
->ai_urbs
,
607 devpriv
->n_ai_urbs
, 1);
609 devpriv
->ai_cmd_running
= 0;
610 mutex_unlock(&devpriv
->mut
);
613 s
->async
->inttrig
= NULL
;
615 mutex_unlock(&devpriv
->mut
);
620 static int usbduxsigma_ai_cmd(struct comedi_device
*dev
,
621 struct comedi_subdevice
*s
)
623 struct usbduxsigma_private
*devpriv
= dev
->private;
624 struct comedi_cmd
*cmd
= &s
->async
->cmd
;
625 unsigned int len
= cmd
->chanlist_len
;
632 mutex_lock(&devpriv
->mut
);
634 if (devpriv
->high_speed
) {
636 * every 2 channels get a time window of 125us. Thus, if we
637 * sample all 16 channels we need 1ms. If we sample only one
638 * channel we need only 125us
640 unsigned int interval
= usbduxsigma_chans_to_interval(len
);
642 devpriv
->ai_interval
= interval
;
643 devpriv
->ai_timer
= cmd
->scan_begin_arg
/ (125000 * interval
);
645 /* interval always 1ms */
646 devpriv
->ai_interval
= 1;
647 devpriv
->ai_timer
= cmd
->scan_begin_arg
/ 1000000;
650 for (i
= 0; i
< len
; i
++) {
651 unsigned int chan
= CR_CHAN(cmd
->chanlist
[i
]);
653 create_adc_command(chan
, &muxsg0
, &muxsg1
);
656 devpriv
->dux_commands
[1] = devpriv
->ai_interval
;
657 devpriv
->dux_commands
[2] = len
; /* num channels per time step */
658 devpriv
->dux_commands
[3] = 0x12; /* CONFIG0 */
659 devpriv
->dux_commands
[4] = 0x03; /* CONFIG1: 23kHz sample, delay 0us */
660 devpriv
->dux_commands
[5] = 0x00; /* CONFIG3: diff. channels off */
661 devpriv
->dux_commands
[6] = muxsg0
;
662 devpriv
->dux_commands
[7] = muxsg1
;
663 devpriv
->dux_commands
[8] = sysred
;
665 ret
= usbbuxsigma_send_cmd(dev
, USBBUXSIGMA_AD_CMD
);
667 mutex_unlock(&devpriv
->mut
);
671 devpriv
->ai_counter
= devpriv
->ai_timer
;
673 if (cmd
->start_src
== TRIG_NOW
) {
674 /* enable this acquisition operation */
675 devpriv
->ai_cmd_running
= 1;
676 ret
= usbduxsigma_submit_urbs(dev
, devpriv
->ai_urbs
,
677 devpriv
->n_ai_urbs
, 1);
679 devpriv
->ai_cmd_running
= 0;
680 mutex_unlock(&devpriv
->mut
);
683 s
->async
->inttrig
= NULL
;
684 } else { /* TRIG_INT */
685 s
->async
->inttrig
= usbduxsigma_ai_inttrig
;
688 mutex_unlock(&devpriv
->mut
);
693 static int usbduxsigma_ai_insn_read(struct comedi_device
*dev
,
694 struct comedi_subdevice
*s
,
695 struct comedi_insn
*insn
,
698 struct usbduxsigma_private
*devpriv
= dev
->private;
699 unsigned int chan
= CR_CHAN(insn
->chanspec
);
706 mutex_lock(&devpriv
->mut
);
707 if (devpriv
->ai_cmd_running
) {
708 mutex_unlock(&devpriv
->mut
);
712 create_adc_command(chan
, &muxsg0
, &muxsg1
);
714 /* Mode 0 is used to get a single conversion on demand */
715 devpriv
->dux_commands
[1] = 0x16; /* CONFIG0: chopper on */
716 devpriv
->dux_commands
[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
717 devpriv
->dux_commands
[3] = 0x00; /* CONFIG3: diff. channels off */
718 devpriv
->dux_commands
[4] = muxsg0
;
719 devpriv
->dux_commands
[5] = muxsg1
;
720 devpriv
->dux_commands
[6] = sysred
;
723 ret
= usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_SINGLE_AD_CMD
);
725 mutex_unlock(&devpriv
->mut
);
729 for (i
= 0; i
< insn
->n
; i
++) {
732 ret
= usbduxsigma_receive_cmd(dev
, USBDUXSIGMA_SINGLE_AD_CMD
);
734 mutex_unlock(&devpriv
->mut
);
738 /* 32 bits big endian from the A/D converter */
739 val
= be32_to_cpu(get_unaligned((__be32
740 *)(devpriv
->insn_buf
+ 1)));
741 val
&= 0x00ffffff; /* strip status byte */
742 data
[i
] = comedi_offset_munge(s
, val
);
744 mutex_unlock(&devpriv
->mut
);
749 static int usbduxsigma_ao_insn_read(struct comedi_device
*dev
,
750 struct comedi_subdevice
*s
,
751 struct comedi_insn
*insn
,
754 struct usbduxsigma_private
*devpriv
= dev
->private;
757 mutex_lock(&devpriv
->mut
);
758 ret
= comedi_readback_insn_read(dev
, s
, insn
, data
);
759 mutex_unlock(&devpriv
->mut
);
764 static int usbduxsigma_ao_insn_write(struct comedi_device
*dev
,
765 struct comedi_subdevice
*s
,
766 struct comedi_insn
*insn
,
769 struct usbduxsigma_private
*devpriv
= dev
->private;
770 unsigned int chan
= CR_CHAN(insn
->chanspec
);
774 mutex_lock(&devpriv
->mut
);
775 if (devpriv
->ao_cmd_running
) {
776 mutex_unlock(&devpriv
->mut
);
780 for (i
= 0; i
< insn
->n
; i
++) {
781 devpriv
->dux_commands
[1] = 1; /* num channels */
782 devpriv
->dux_commands
[2] = data
[i
]; /* value */
783 devpriv
->dux_commands
[3] = chan
; /* channel number */
784 ret
= usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_DA_CMD
);
786 mutex_unlock(&devpriv
->mut
);
789 s
->readback
[chan
] = data
[i
];
791 mutex_unlock(&devpriv
->mut
);
796 static int usbduxsigma_ao_inttrig(struct comedi_device
*dev
,
797 struct comedi_subdevice
*s
,
798 unsigned int trig_num
)
800 struct usbduxsigma_private
*devpriv
= dev
->private;
801 struct comedi_cmd
*cmd
= &s
->async
->cmd
;
804 if (trig_num
!= cmd
->start_arg
)
807 mutex_lock(&devpriv
->mut
);
808 if (!devpriv
->ao_cmd_running
) {
809 devpriv
->ao_cmd_running
= 1;
810 ret
= usbduxsigma_submit_urbs(dev
, devpriv
->ao_urbs
,
811 devpriv
->n_ao_urbs
, 0);
813 devpriv
->ao_cmd_running
= 0;
814 mutex_unlock(&devpriv
->mut
);
817 s
->async
->inttrig
= NULL
;
819 mutex_unlock(&devpriv
->mut
);
824 static int usbduxsigma_ao_cmdtest(struct comedi_device
*dev
,
825 struct comedi_subdevice
*s
,
826 struct comedi_cmd
*cmd
)
828 struct usbduxsigma_private
*devpriv
= dev
->private;
832 /* Step 1 : check if triggers are trivially valid */
834 err
|= comedi_check_trigger_src(&cmd
->start_src
, TRIG_NOW
| TRIG_INT
);
837 * For now, always use "scan" timing with all channels updated at once
838 * (cmd->scan_begin_src == TRIG_TIMER, cmd->convert_src == TRIG_NOW).
840 * In a future version, "convert" timing with channels updated
841 * indivually may be supported in high speed mode
842 * (cmd->scan_begin_src == TRIG_FOLLOW, cmd->convert_src == TRIG_TIMER).
844 err
|= comedi_check_trigger_src(&cmd
->scan_begin_src
, TRIG_TIMER
);
845 err
|= comedi_check_trigger_src(&cmd
->convert_src
, TRIG_NOW
);
846 err
|= comedi_check_trigger_src(&cmd
->scan_end_src
, TRIG_COUNT
);
847 err
|= comedi_check_trigger_src(&cmd
->stop_src
, TRIG_COUNT
| TRIG_NONE
);
850 mutex_unlock(&devpriv
->mut
);
854 /* Step 2a : make sure trigger sources are unique */
856 err
|= comedi_check_trigger_is_unique(cmd
->start_src
);
857 err
|= comedi_check_trigger_is_unique(cmd
->stop_src
);
859 /* Step 2b : and mutually compatible */
864 /* Step 3: check if arguments are trivially valid */
866 err
|= comedi_check_trigger_arg_is(&cmd
->start_arg
, 0);
868 err
|= comedi_check_trigger_arg_min(&cmd
->scan_begin_arg
, 1000000);
870 err
|= comedi_check_trigger_arg_is(&cmd
->scan_end_arg
,
873 if (cmd
->stop_src
== TRIG_COUNT
)
874 err
|= comedi_check_trigger_arg_min(&cmd
->stop_arg
, 1);
876 err
|= comedi_check_trigger_arg_is(&cmd
->stop_arg
, 0);
881 /* Step 4: fix up any arguments */
883 tmp
= rounddown(cmd
->scan_begin_arg
, 1000000);
884 err
|= comedi_check_trigger_arg_is(&cmd
->scan_begin_arg
, tmp
);
892 static int usbduxsigma_ao_cmd(struct comedi_device
*dev
,
893 struct comedi_subdevice
*s
)
895 struct usbduxsigma_private
*devpriv
= dev
->private;
896 struct comedi_cmd
*cmd
= &s
->async
->cmd
;
899 mutex_lock(&devpriv
->mut
);
902 * For now, only "scan" timing is supported. A future version may
903 * support "convert" timing in high speed mode.
905 * Timing of the scan: every 1ms all channels updated at once.
907 devpriv
->ao_timer
= cmd
->scan_begin_arg
/ 1000000;
909 devpriv
->ao_counter
= devpriv
->ao_timer
;
911 if (cmd
->start_src
== TRIG_NOW
) {
912 /* enable this acquisition operation */
913 devpriv
->ao_cmd_running
= 1;
914 ret
= usbduxsigma_submit_urbs(dev
, devpriv
->ao_urbs
,
915 devpriv
->n_ao_urbs
, 0);
917 devpriv
->ao_cmd_running
= 0;
918 mutex_unlock(&devpriv
->mut
);
921 s
->async
->inttrig
= NULL
;
922 } else { /* TRIG_INT */
923 s
->async
->inttrig
= usbduxsigma_ao_inttrig
;
926 mutex_unlock(&devpriv
->mut
);
931 static int usbduxsigma_dio_insn_config(struct comedi_device
*dev
,
932 struct comedi_subdevice
*s
,
933 struct comedi_insn
*insn
,
938 ret
= comedi_dio_insn_config(dev
, s
, insn
, data
, 0);
943 * We don't tell the firmware here as it would take 8 frames
944 * to submit the information. We do it in the (*insn_bits).
949 static int usbduxsigma_dio_insn_bits(struct comedi_device
*dev
,
950 struct comedi_subdevice
*s
,
951 struct comedi_insn
*insn
,
954 struct usbduxsigma_private
*devpriv
= dev
->private;
957 mutex_lock(&devpriv
->mut
);
959 comedi_dio_update_state(s
, data
);
961 /* Always update the hardware. See the (*insn_config). */
962 devpriv
->dux_commands
[1] = s
->io_bits
& 0xff;
963 devpriv
->dux_commands
[4] = s
->state
& 0xff;
964 devpriv
->dux_commands
[2] = (s
->io_bits
>> 8) & 0xff;
965 devpriv
->dux_commands
[5] = (s
->state
>> 8) & 0xff;
966 devpriv
->dux_commands
[3] = (s
->io_bits
>> 16) & 0xff;
967 devpriv
->dux_commands
[6] = (s
->state
>> 16) & 0xff;
969 ret
= usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_DIO_BITS_CMD
);
972 ret
= usbduxsigma_receive_cmd(dev
, USBDUXSIGMA_DIO_BITS_CMD
);
976 s
->state
= devpriv
->insn_buf
[1] |
977 (devpriv
->insn_buf
[2] << 8) |
978 (devpriv
->insn_buf
[3] << 16);
984 mutex_unlock(&devpriv
->mut
);
989 static void usbduxsigma_pwm_stop(struct comedi_device
*dev
, int do_unlink
)
991 struct usbduxsigma_private
*devpriv
= dev
->private;
994 if (devpriv
->pwm_urb
)
995 usb_kill_urb(devpriv
->pwm_urb
);
998 devpriv
->pwm_cmd_running
= 0;
1001 static int usbduxsigma_pwm_cancel(struct comedi_device
*dev
,
1002 struct comedi_subdevice
*s
)
1004 struct usbduxsigma_private
*devpriv
= dev
->private;
1006 /* unlink only if it is really running */
1007 usbduxsigma_pwm_stop(dev
, devpriv
->pwm_cmd_running
);
1009 return usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_PWM_OFF_CMD
);
1012 static void usbduxsigma_pwm_urb_complete(struct urb
*urb
)
1014 struct comedi_device
*dev
= urb
->context
;
1015 struct usbduxsigma_private
*devpriv
= dev
->private;
1018 switch (urb
->status
) {
1027 /* happens after an unlink command */
1028 if (devpriv
->pwm_cmd_running
)
1029 usbduxsigma_pwm_stop(dev
, 0); /* w/o unlink */
1034 if (devpriv
->pwm_cmd_running
) {
1035 dev_err(dev
->class_dev
, "non-zero urb status (%d)\n",
1037 usbduxsigma_pwm_stop(dev
, 0); /* w/o unlink */
1042 if (!devpriv
->pwm_cmd_running
)
1045 urb
->transfer_buffer_length
= devpriv
->pwm_buf_sz
;
1046 urb
->dev
= comedi_to_usb_dev(dev
);
1048 ret
= usb_submit_urb(urb
, GFP_ATOMIC
);
1050 dev_err(dev
->class_dev
, "urb resubmit failed (%d)\n", ret
);
1051 if (ret
== -EL2NSYNC
)
1052 dev_err(dev
->class_dev
,
1053 "buggy USB host controller or bug in IRQ handler\n");
1054 usbduxsigma_pwm_stop(dev
, 0); /* w/o unlink */
1058 static int usbduxsigma_submit_pwm_urb(struct comedi_device
*dev
)
1060 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
1061 struct usbduxsigma_private
*devpriv
= dev
->private;
1062 struct urb
*urb
= devpriv
->pwm_urb
;
1064 /* in case of a resubmission after an unlink... */
1065 usb_fill_bulk_urb(urb
, usb
, usb_sndbulkpipe(usb
, 4),
1066 urb
->transfer_buffer
, devpriv
->pwm_buf_sz
,
1067 usbduxsigma_pwm_urb_complete
, dev
);
1069 return usb_submit_urb(urb
, GFP_ATOMIC
);
1072 static int usbduxsigma_pwm_period(struct comedi_device
*dev
,
1073 struct comedi_subdevice
*s
,
1074 unsigned int period
)
1076 struct usbduxsigma_private
*devpriv
= dev
->private;
1079 if (period
< MIN_PWM_PERIOD
)
1082 fx2delay
= (period
/ (6 * 512 * 1000 / 33)) - 6;
1086 devpriv
->pwm_delay
= fx2delay
;
1087 devpriv
->pwm_period
= period
;
1091 static int usbduxsigma_pwm_start(struct comedi_device
*dev
,
1092 struct comedi_subdevice
*s
)
1094 struct usbduxsigma_private
*devpriv
= dev
->private;
1097 if (devpriv
->pwm_cmd_running
)
1100 devpriv
->dux_commands
[1] = devpriv
->pwm_delay
;
1101 ret
= usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_PWM_ON_CMD
);
1105 memset(devpriv
->pwm_urb
->transfer_buffer
, 0, devpriv
->pwm_buf_sz
);
1107 devpriv
->pwm_cmd_running
= 1;
1108 ret
= usbduxsigma_submit_pwm_urb(dev
);
1110 devpriv
->pwm_cmd_running
= 0;
1117 static void usbduxsigma_pwm_pattern(struct comedi_device
*dev
,
1118 struct comedi_subdevice
*s
,
1123 struct usbduxsigma_private
*devpriv
= dev
->private;
1124 char pwm_mask
= (1 << chan
); /* DIO bit for the PWM data */
1125 char sgn_mask
= (16 << chan
); /* DIO bit for the sign */
1126 char *buf
= (char *)(devpriv
->pwm_urb
->transfer_buffer
);
1127 int szbuf
= devpriv
->pwm_buf_sz
;
1130 for (i
= 0; i
< szbuf
; i
++) {
1144 static int usbduxsigma_pwm_write(struct comedi_device
*dev
,
1145 struct comedi_subdevice
*s
,
1146 struct comedi_insn
*insn
,
1149 unsigned int chan
= CR_CHAN(insn
->chanspec
);
1152 * It doesn't make sense to support more than one value here
1153 * because it would just overwrite the PWM buffer.
1159 * The sign is set via a special INSN only, this gives us 8 bits
1160 * for normal operation, sign is 0 by default.
1162 usbduxsigma_pwm_pattern(dev
, s
, chan
, data
[0], 0);
1167 static int usbduxsigma_pwm_config(struct comedi_device
*dev
,
1168 struct comedi_subdevice
*s
,
1169 struct comedi_insn
*insn
,
1172 struct usbduxsigma_private
*devpriv
= dev
->private;
1173 unsigned int chan
= CR_CHAN(insn
->chanspec
);
1176 case INSN_CONFIG_ARM
:
1178 * if not zero the PWM is limited to a certain time which is
1179 * not supported here
1183 return usbduxsigma_pwm_start(dev
, s
);
1184 case INSN_CONFIG_DISARM
:
1185 return usbduxsigma_pwm_cancel(dev
, s
);
1186 case INSN_CONFIG_GET_PWM_STATUS
:
1187 data
[1] = devpriv
->pwm_cmd_running
;
1189 case INSN_CONFIG_PWM_SET_PERIOD
:
1190 return usbduxsigma_pwm_period(dev
, s
, data
[1]);
1191 case INSN_CONFIG_PWM_GET_PERIOD
:
1192 data
[1] = devpriv
->pwm_period
;
1194 case INSN_CONFIG_PWM_SET_H_BRIDGE
:
1197 * data[2] = sign (for a relay)
1199 usbduxsigma_pwm_pattern(dev
, s
, chan
, data
[1], (data
[2] != 0));
1201 case INSN_CONFIG_PWM_GET_H_BRIDGE
:
1202 /* values are not kept in this driver, nothing to return */
1208 static int usbduxsigma_getstatusinfo(struct comedi_device
*dev
, int chan
)
1210 struct comedi_subdevice
*s
= dev
->read_subdev
;
1211 struct usbduxsigma_private
*devpriv
= dev
->private;
1219 sysred
= 0; /* ADC zero */
1222 sysred
= 1; /* ADC offset */
1225 sysred
= 4; /* VCC */
1228 sysred
= 8; /* temperature */
1231 sysred
= 16; /* gain */
1234 sysred
= 32; /* ref */
1238 devpriv
->dux_commands
[1] = 0x12; /* CONFIG0 */
1239 devpriv
->dux_commands
[2] = 0x80; /* CONFIG1: 2kHz sampling rate */
1240 devpriv
->dux_commands
[3] = 0x00; /* CONFIG3: diff. channels off */
1241 devpriv
->dux_commands
[4] = 0;
1242 devpriv
->dux_commands
[5] = 0;
1243 devpriv
->dux_commands
[6] = sysred
;
1244 ret
= usbbuxsigma_send_cmd(dev
, USBDUXSIGMA_SINGLE_AD_CMD
);
1248 ret
= usbduxsigma_receive_cmd(dev
, USBDUXSIGMA_SINGLE_AD_CMD
);
1252 /* 32 bits big endian from the A/D converter */
1253 val
= be32_to_cpu(get_unaligned((__be32
*)(devpriv
->insn_buf
+ 1)));
1254 val
&= 0x00ffffff; /* strip status byte */
1256 return (int)comedi_offset_munge(s
, val
);
1259 static int usbduxsigma_firmware_upload(struct comedi_device
*dev
,
1260 const u8
*data
, size_t size
,
1261 unsigned long context
)
1263 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
1271 if (size
> FIRMWARE_MAX_LEN
) {
1272 dev_err(dev
->class_dev
, "firmware binary too large for FX2\n");
1276 /* we generate a local buffer for the firmware */
1277 buf
= kmemdup(data
, size
, GFP_KERNEL
);
1281 /* we need a malloc'ed buffer for usb_control_msg() */
1282 tmp
= kmalloc(1, GFP_KERNEL
);
1288 /* stop the current firmware on the device */
1289 *tmp
= 1; /* 7f92 to one */
1290 ret
= usb_control_msg(usb
, usb_sndctrlpipe(usb
, 0),
1293 USBDUXSUB_CPUCS
, 0x0000,
1297 dev_err(dev
->class_dev
, "can not stop firmware\n");
1301 /* upload the new firmware to the device */
1302 ret
= usb_control_msg(usb
, usb_sndctrlpipe(usb
, 0),
1309 dev_err(dev
->class_dev
, "firmware upload failed\n");
1313 /* start the new firmware on the device */
1314 *tmp
= 0; /* 7f92 to zero */
1315 ret
= usb_control_msg(usb
, usb_sndctrlpipe(usb
, 0),
1318 USBDUXSUB_CPUCS
, 0x0000,
1322 dev_err(dev
->class_dev
, "can not start firmware\n");
1330 static int usbduxsigma_alloc_usb_buffers(struct comedi_device
*dev
)
1332 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
1333 struct usbduxsigma_private
*devpriv
= dev
->private;
1337 devpriv
->dux_commands
= kzalloc(SIZEOFDUXBUFFER
, GFP_KERNEL
);
1338 devpriv
->in_buf
= kzalloc(SIZEINBUF
, GFP_KERNEL
);
1339 devpriv
->insn_buf
= kzalloc(SIZEINSNBUF
, GFP_KERNEL
);
1340 devpriv
->ai_urbs
= kcalloc(devpriv
->n_ai_urbs
, sizeof(urb
), GFP_KERNEL
);
1341 devpriv
->ao_urbs
= kcalloc(devpriv
->n_ao_urbs
, sizeof(urb
), GFP_KERNEL
);
1342 if (!devpriv
->dux_commands
|| !devpriv
->in_buf
|| !devpriv
->insn_buf
||
1343 !devpriv
->ai_urbs
|| !devpriv
->ao_urbs
)
1346 for (i
= 0; i
< devpriv
->n_ai_urbs
; i
++) {
1347 /* one frame: 1ms */
1348 urb
= usb_alloc_urb(1, GFP_KERNEL
);
1351 devpriv
->ai_urbs
[i
] = urb
;
1353 /* will be filled later with a pointer to the comedi-device */
1354 /* and ONLY then the urb should be submitted */
1355 urb
->context
= NULL
;
1356 urb
->pipe
= usb_rcvisocpipe(usb
, 6);
1357 urb
->transfer_flags
= URB_ISO_ASAP
;
1358 urb
->transfer_buffer
= kzalloc(SIZEINBUF
, GFP_KERNEL
);
1359 if (!urb
->transfer_buffer
)
1361 urb
->complete
= usbduxsigma_ai_urb_complete
;
1362 urb
->number_of_packets
= 1;
1363 urb
->transfer_buffer_length
= SIZEINBUF
;
1364 urb
->iso_frame_desc
[0].offset
= 0;
1365 urb
->iso_frame_desc
[0].length
= SIZEINBUF
;
1368 for (i
= 0; i
< devpriv
->n_ao_urbs
; i
++) {
1369 /* one frame: 1ms */
1370 urb
= usb_alloc_urb(1, GFP_KERNEL
);
1373 devpriv
->ao_urbs
[i
] = urb
;
1375 /* will be filled later with a pointer to the comedi-device */
1376 /* and ONLY then the urb should be submitted */
1377 urb
->context
= NULL
;
1378 urb
->pipe
= usb_sndisocpipe(usb
, 2);
1379 urb
->transfer_flags
= URB_ISO_ASAP
;
1380 urb
->transfer_buffer
= kzalloc(SIZEOUTBUF
, GFP_KERNEL
);
1381 if (!urb
->transfer_buffer
)
1383 urb
->complete
= usbduxsigma_ao_urb_complete
;
1384 urb
->number_of_packets
= 1;
1385 urb
->transfer_buffer_length
= SIZEOUTBUF
;
1386 urb
->iso_frame_desc
[0].offset
= 0;
1387 urb
->iso_frame_desc
[0].length
= SIZEOUTBUF
;
1388 urb
->interval
= 1; /* (u)frames */
1391 if (devpriv
->pwm_buf_sz
) {
1392 urb
= usb_alloc_urb(0, GFP_KERNEL
);
1395 devpriv
->pwm_urb
= urb
;
1397 urb
->transfer_buffer
= kzalloc(devpriv
->pwm_buf_sz
,
1399 if (!urb
->transfer_buffer
)
1406 static void usbduxsigma_free_usb_buffers(struct comedi_device
*dev
)
1408 struct usbduxsigma_private
*devpriv
= dev
->private;
1412 urb
= devpriv
->pwm_urb
;
1414 kfree(urb
->transfer_buffer
);
1417 if (devpriv
->ao_urbs
) {
1418 for (i
= 0; i
< devpriv
->n_ao_urbs
; i
++) {
1419 urb
= devpriv
->ao_urbs
[i
];
1421 kfree(urb
->transfer_buffer
);
1425 kfree(devpriv
->ao_urbs
);
1427 if (devpriv
->ai_urbs
) {
1428 for (i
= 0; i
< devpriv
->n_ai_urbs
; i
++) {
1429 urb
= devpriv
->ai_urbs
[i
];
1431 kfree(urb
->transfer_buffer
);
1435 kfree(devpriv
->ai_urbs
);
1437 kfree(devpriv
->insn_buf
);
1438 kfree(devpriv
->in_buf
);
1439 kfree(devpriv
->dux_commands
);
1442 static int usbduxsigma_auto_attach(struct comedi_device
*dev
,
1443 unsigned long context_unused
)
1445 struct usb_interface
*intf
= comedi_to_usb_interface(dev
);
1446 struct usb_device
*usb
= comedi_to_usb_dev(dev
);
1447 struct usbduxsigma_private
*devpriv
;
1448 struct comedi_subdevice
*s
;
1452 devpriv
= comedi_alloc_devpriv(dev
, sizeof(*devpriv
));
1456 mutex_init(&devpriv
->mut
);
1458 usb_set_intfdata(intf
, devpriv
);
1460 devpriv
->high_speed
= (usb
->speed
== USB_SPEED_HIGH
);
1461 if (devpriv
->high_speed
) {
1462 devpriv
->n_ai_urbs
= NUMOFINBUFFERSHIGH
;
1463 devpriv
->n_ao_urbs
= NUMOFOUTBUFFERSHIGH
;
1464 devpriv
->pwm_buf_sz
= 512;
1466 devpriv
->n_ai_urbs
= NUMOFINBUFFERSFULL
;
1467 devpriv
->n_ao_urbs
= NUMOFOUTBUFFERSFULL
;
1470 ret
= usbduxsigma_alloc_usb_buffers(dev
);
1474 /* setting to alternate setting 3: enabling iso ep and bulk ep. */
1475 ret
= usb_set_interface(usb
, intf
->altsetting
->desc
.bInterfaceNumber
,
1478 dev_err(dev
->class_dev
,
1479 "could not set alternate setting 3 in high speed\n");
1483 ret
= comedi_load_firmware(dev
, &usb
->dev
, FIRMWARE
,
1484 usbduxsigma_firmware_upload
, 0);
1488 ret
= comedi_alloc_subdevices(dev
, (devpriv
->high_speed
) ? 4 : 3);
1492 /* Analog Input subdevice */
1493 s
= &dev
->subdevices
[0];
1494 dev
->read_subdev
= s
;
1495 s
->type
= COMEDI_SUBD_AI
;
1496 s
->subdev_flags
= SDF_READABLE
| SDF_GROUND
| SDF_CMD_READ
| SDF_LSAMPL
;
1497 s
->n_chan
= NUMCHANNELS
;
1498 s
->len_chanlist
= NUMCHANNELS
;
1499 s
->maxdata
= 0x00ffffff;
1500 s
->range_table
= &usbduxsigma_ai_range
;
1501 s
->insn_read
= usbduxsigma_ai_insn_read
;
1502 s
->do_cmdtest
= usbduxsigma_ai_cmdtest
;
1503 s
->do_cmd
= usbduxsigma_ai_cmd
;
1504 s
->cancel
= usbduxsigma_ai_cancel
;
1506 /* Analog Output subdevice */
1507 s
= &dev
->subdevices
[1];
1508 dev
->write_subdev
= s
;
1509 s
->type
= COMEDI_SUBD_AO
;
1510 s
->subdev_flags
= SDF_WRITABLE
| SDF_GROUND
| SDF_CMD_WRITE
;
1512 s
->len_chanlist
= s
->n_chan
;
1513 s
->maxdata
= 0x00ff;
1514 s
->range_table
= &range_unipolar2_5
;
1515 s
->insn_write
= usbduxsigma_ao_insn_write
;
1516 s
->insn_read
= usbduxsigma_ao_insn_read
;
1517 s
->do_cmdtest
= usbduxsigma_ao_cmdtest
;
1518 s
->do_cmd
= usbduxsigma_ao_cmd
;
1519 s
->cancel
= usbduxsigma_ao_cancel
;
1521 ret
= comedi_alloc_subdev_readback(s
);
1525 /* Digital I/O subdevice */
1526 s
= &dev
->subdevices
[2];
1527 s
->type
= COMEDI_SUBD_DIO
;
1528 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
1531 s
->range_table
= &range_digital
;
1532 s
->insn_bits
= usbduxsigma_dio_insn_bits
;
1533 s
->insn_config
= usbduxsigma_dio_insn_config
;
1535 if (devpriv
->high_speed
) {
1536 /* Timer / pwm subdevice */
1537 s
= &dev
->subdevices
[3];
1538 s
->type
= COMEDI_SUBD_PWM
;
1539 s
->subdev_flags
= SDF_WRITABLE
| SDF_PWM_HBRIDGE
;
1541 s
->maxdata
= devpriv
->pwm_buf_sz
;
1542 s
->insn_write
= usbduxsigma_pwm_write
;
1543 s
->insn_config
= usbduxsigma_pwm_config
;
1545 usbduxsigma_pwm_period(dev
, s
, PWM_DEFAULT_PERIOD
);
1548 offset
= usbduxsigma_getstatusinfo(dev
, 0);
1550 dev_err(dev
->class_dev
,
1551 "Communication to USBDUXSIGMA failed! Check firmware and cabling.\n");
1555 dev_info(dev
->class_dev
, "ADC_zero = %x\n", offset
);
1560 static void usbduxsigma_detach(struct comedi_device
*dev
)
1562 struct usb_interface
*intf
= comedi_to_usb_interface(dev
);
1563 struct usbduxsigma_private
*devpriv
= dev
->private;
1565 usb_set_intfdata(intf
, NULL
);
1570 mutex_lock(&devpriv
->mut
);
1572 /* force unlink all urbs */
1573 usbduxsigma_ai_stop(dev
, 1);
1574 usbduxsigma_ao_stop(dev
, 1);
1575 usbduxsigma_pwm_stop(dev
, 1);
1577 usbduxsigma_free_usb_buffers(dev
);
1579 mutex_unlock(&devpriv
->mut
);
1581 mutex_destroy(&devpriv
->mut
);
1584 static struct comedi_driver usbduxsigma_driver
= {
1585 .driver_name
= "usbduxsigma",
1586 .module
= THIS_MODULE
,
1587 .auto_attach
= usbduxsigma_auto_attach
,
1588 .detach
= usbduxsigma_detach
,
1591 static int usbduxsigma_usb_probe(struct usb_interface
*intf
,
1592 const struct usb_device_id
*id
)
1594 return comedi_usb_auto_config(intf
, &usbduxsigma_driver
, 0);
1597 static const struct usb_device_id usbduxsigma_usb_table
[] = {
1598 { USB_DEVICE(0x13d8, 0x0020) },
1599 { USB_DEVICE(0x13d8, 0x0021) },
1600 { USB_DEVICE(0x13d8, 0x0022) },
1603 MODULE_DEVICE_TABLE(usb
, usbduxsigma_usb_table
);
1605 static struct usb_driver usbduxsigma_usb_driver
= {
1606 .name
= "usbduxsigma",
1607 .probe
= usbduxsigma_usb_probe
,
1608 .disconnect
= comedi_usb_auto_unconfig
,
1609 .id_table
= usbduxsigma_usb_table
,
1611 module_comedi_usb_driver(usbduxsigma_driver
, usbduxsigma_usb_driver
);
1613 MODULE_AUTHOR("Bernd Porr, mail@berndporr.me.uk");
1614 MODULE_DESCRIPTION("Stirling/ITL USB-DUX SIGMA -- mail@berndporr.me.uk");
1615 MODULE_LICENSE("GPL");
1616 MODULE_FIRMWARE(FIRMWARE
);