2 * comedi/drivers/dt2801.c
3 * Device Driver for DataTranslation DT2801
8 Description: Data Translation DT2801 series and DT01-EZ
11 Devices: [Data Translation] DT2801 (dt2801), DT2801-A, DT2801/5716A,
12 DT2805, DT2805/5716A, DT2808, DT2818, DT2809, DT01-EZ
14 This driver can autoprobe the type of board.
16 Configuration options:
17 [0] - I/O port base address
19 [2] - A/D reference 0=differential, 1=single-ended
29 [5] - D/A 1 range (same choices)
32 #include "../comedidev.h"
33 #include <linux/delay.h>
34 #include <linux/ioport.h>
36 #define DT2801_TIMEOUT 1000
38 /* Hardware Configuration */
39 /* ====================== */
41 #define DT2801_MAX_DMA_SIZE (64 * 1024)
44 #define DT2801_IOSIZE 2
46 /* define's & typedef's */
47 /* ====================== */
50 #define DT_C_RESET 0x0
51 #define DT_C_CLEAR_ERR 0x1
52 #define DT_C_READ_ERRREG 0x2
53 #define DT_C_SET_CLOCK 0x3
58 #define DT_C_SET_DIGIN 0x4
59 #define DT_C_SET_DIGOUT 0x5
60 #define DT_C_READ_DIG 0x6
61 #define DT_C_WRITE_DIG 0x7
63 #define DT_C_WRITE_DAIM 0x8
64 #define DT_C_SET_DA 0x9
65 #define DT_C_WRITE_DA 0xa
67 #define DT_C_READ_ADIM 0xc
68 #define DT_C_SET_AD 0xd
69 #define DT_C_READ_AD 0xe
71 /* Command modifiers (only used with read/write), EXTTRIG can be
72 used with some other commands.
74 #define DT_MOD_DMA (1<<4)
75 #define DT_MOD_CONT (1<<5)
76 #define DT_MOD_EXTCLK (1<<6)
77 #define DT_MOD_EXTTRIG (1<<7)
79 /* Bits in status register */
80 #define DT_S_DATA_OUT_READY (1<<0)
81 #define DT_S_DATA_IN_FULL (1<<1)
82 #define DT_S_READY (1<<2)
83 #define DT_S_COMMAND (1<<3)
84 #define DT_S_COMPOSITE_ERROR (1<<7)
88 #define DT2801_STATUS 1
91 static int dt2801_attach(comedi_device
* dev
, comedi_devconfig
* it
);
92 static int dt2801_detach(comedi_device
* dev
);
93 static comedi_driver driver_dt2801
= {
100 COMEDI_INITCLEANUP(driver_dt2801
);
103 // ignore 'defined but not used' warning
104 static const comedi_lrange range_dt2801_ai_pgh_bipolar
= { 4, {
112 static const comedi_lrange range_dt2801_ai_pgl_bipolar
= { 4, {
121 // ignore 'defined but not used' warning
122 static const comedi_lrange range_dt2801_ai_pgh_unipolar
= { 4, {
130 static const comedi_lrange range_dt2801_ai_pgl_unipolar
= { 4, {
148 /* Typeid's for the different boards of the DT2801-series
149 (taken from the test-software, that comes with the board)
151 static const boardtype_t boardtypes
[] = {
169 name
: "dt2801/5716a",
185 name
: "dt2805/5716a",
218 #define n_boardtypes ((sizeof(boardtypes))/(sizeof(boardtypes[0])))
219 #define boardtype (*(const boardtype_t *)dev->board_ptr)
222 const comedi_lrange
*dac_range_types
[2];
223 unsigned int ao_readback
[2];
225 #define devpriv ((dt2801_private *)dev->private)
227 static int dt2801_ai_insn_read(comedi_device
* dev
, comedi_subdevice
* s
,
228 comedi_insn
* insn
, unsigned int * data
);
229 static int dt2801_ao_insn_read(comedi_device
* dev
, comedi_subdevice
* s
,
230 comedi_insn
* insn
, unsigned int * data
);
231 static int dt2801_ao_insn_write(comedi_device
* dev
, comedi_subdevice
* s
,
232 comedi_insn
* insn
, unsigned int * data
);
233 static int dt2801_dio_insn_bits(comedi_device
* dev
, comedi_subdevice
* s
,
234 comedi_insn
* insn
, unsigned int * data
);
235 static int dt2801_dio_insn_config(comedi_device
* dev
, comedi_subdevice
* s
,
236 comedi_insn
* insn
, unsigned int * data
);
238 /* These are the low-level routines:
239 writecommand: write a command to the board
240 writedata: write data byte
241 readdata: read data byte
244 /* Only checks DataOutReady-flag, not the Ready-flag as it is done
245 in the examples of the manual. I don't see why this should be
247 static int dt2801_readdata(comedi_device
* dev
, int *data
)
250 int timeout
= DT2801_TIMEOUT
;
253 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
254 if (stat
& (DT_S_COMPOSITE_ERROR
| DT_S_READY
)) {
257 if (stat
& DT_S_DATA_OUT_READY
) {
258 *data
= inb_p(dev
->iobase
+ DT2801_DATA
);
261 } while (--timeout
> 0);
266 static int dt2801_readdata2(comedi_device
* dev
, int *data
)
271 ret
= dt2801_readdata(dev
, &lb
);
274 ret
= dt2801_readdata(dev
, &hb
);
278 *data
= (hb
<< 8) + lb
;
282 static int dt2801_writedata(comedi_device
* dev
, unsigned int data
)
285 int timeout
= DT2801_TIMEOUT
;
288 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
290 if (stat
& DT_S_COMPOSITE_ERROR
) {
293 if (!(stat
& DT_S_DATA_IN_FULL
)) {
294 outb_p(data
& 0xff, dev
->iobase
+ DT2801_DATA
);
298 if (stat
& DT_S_READY
) {
299 printk("dt2801: ready flag set (bad!) in dt2801_writedata()\n");
303 } while (--timeout
> 0);
308 static int dt2801_writedata2(comedi_device
* dev
, unsigned int data
)
312 ret
= dt2801_writedata(dev
, data
& 0xff);
315 ret
= dt2801_writedata(dev
, (data
>> 8));
322 static int dt2801_wait_for_ready(comedi_device
* dev
)
324 int timeout
= DT2801_TIMEOUT
;
327 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
328 if (stat
& DT_S_READY
) {
332 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
334 if (stat
& DT_S_COMPOSITE_ERROR
) {
337 if (stat
& DT_S_READY
) {
340 } while (--timeout
> 0);
345 static int dt2801_writecmd(comedi_device
* dev
, int command
)
349 dt2801_wait_for_ready(dev
);
351 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
352 if (stat
& DT_S_COMPOSITE_ERROR
) {
353 printk("dt2801: composite-error in dt2801_writecmd(), ignoring\n");
355 if (!(stat
& DT_S_READY
)) {
356 printk("dt2801: !ready in dt2801_writecmd(), ignoring\n");
358 outb_p(command
, dev
->iobase
+ DT2801_CMD
);
363 static int dt2801_reset(comedi_device
* dev
)
369 DPRINTK("dt2801: resetting board...\n");
370 DPRINTK("fingerprint: 0x%02x 0x%02x\n", inb_p(dev
->iobase
),
371 inb_p(dev
->iobase
+ 1));
373 /* pull random data from data port */
374 inb_p(dev
->iobase
+ DT2801_DATA
);
375 inb_p(dev
->iobase
+ DT2801_DATA
);
376 inb_p(dev
->iobase
+ DT2801_DATA
);
377 inb_p(dev
->iobase
+ DT2801_DATA
);
379 DPRINTK("dt2801: stop\n");
380 //dt2801_writecmd(dev,DT_C_STOP);
381 outb_p(DT_C_STOP
, dev
->iobase
+ DT2801_CMD
);
383 //dt2801_wait_for_ready(dev);
387 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
388 if (stat
& DT_S_READY
)
392 printk("dt2801: timeout 1 status=0x%02x\n", stat
);
394 //printk("dt2801: reading dummy\n");
395 //dt2801_readdata(dev,&board_code);
397 DPRINTK("dt2801: reset\n");
398 outb_p(DT_C_RESET
, dev
->iobase
+ DT2801_CMD
);
399 //dt2801_writecmd(dev,DT_C_RESET);
404 stat
= inb_p(dev
->iobase
+ DT2801_STATUS
);
405 if (stat
& DT_S_READY
)
409 printk("dt2801: timeout 2 status=0x%02x\n", stat
);
412 DPRINTK("dt2801: reading code\n");
413 dt2801_readdata(dev
, &board_code
);
415 DPRINTK("dt2801: ok. code=0x%02x\n", board_code
);
420 static int probe_number_of_ai_chans(comedi_device
* dev
)
426 for (n_chans
= 0; n_chans
< 16; n_chans
++) {
427 stat
= dt2801_writecmd(dev
, DT_C_READ_ADIM
);
428 dt2801_writedata(dev
, 0);
429 dt2801_writedata(dev
, n_chans
);
430 stat
= dt2801_readdata2(dev
, &data
);
442 static const comedi_lrange
*dac_range_table
[] = {
450 static const comedi_lrange
*dac_range_lkup(int opt
)
452 if (opt
< 0 || opt
> 5)
453 return &range_unknown
;
454 return dac_range_table
[opt
];
457 static const comedi_lrange
*ai_range_lkup(int type
, int opt
)
462 &range_dt2801_ai_pgl_unipolar
:
463 &range_dt2801_ai_pgl_bipolar
;
465 return (opt
) ? &range_unipolar10
: &range_bipolar10
;
467 return &range_unipolar5
;
469 return &range_unknown
;
476 [2] - a/d 0=differential, 1=single-ended
477 [3] - a/d range 0=[-10,10], 1=[0,10]
478 [4] - dac0 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5]
479 [5] - dac1 range 0=[-10,10], 1=[-5,5], 2=[-2.5,2.5] 3=[0,10], 4=[0,5]
481 static int dt2801_attach(comedi_device
* dev
, comedi_devconfig
* it
)
484 unsigned long iobase
;
485 int board_code
, type
;
489 iobase
= it
->options
[0];
490 if (!request_region(iobase
, DT2801_IOSIZE
, "dt2801")) {
491 comedi_error(dev
, "I/O port conflict");
494 dev
->iobase
= iobase
;
496 /* do some checking */
498 board_code
= dt2801_reset(dev
);
500 /* heh. if it didn't work, try it again. */
502 board_code
= dt2801_reset(dev
);
504 for (type
= 0; type
< n_boardtypes
; type
++) {
505 if (boardtypes
[type
].boardcode
== board_code
)
508 printk("dt2801: unrecognized board code=0x%02x, contact author\n",
513 dev
->board_ptr
= boardtypes
+ type
;
514 printk("dt2801: %s at port 0x%lx", boardtype
.name
, iobase
);
516 n_ai_chans
= probe_number_of_ai_chans(dev
);
517 printk(" (ai channels = %d)", n_ai_chans
);
519 if ((ret
= alloc_subdevices(dev
, 4)) < 0)
522 if ((ret
= alloc_private(dev
, sizeof(dt2801_private
))) < 0)
525 dev
->board_name
= boardtype
.name
;
527 s
= dev
->subdevices
+ 0;
529 s
->type
= COMEDI_SUBD_AI
;
530 s
->subdev_flags
= SDF_READABLE
| SDF_GROUND
;
532 s
->n_chan
= n_ai_chans
;
535 s
->n_chan
= boardtype
.ad_chan
;
537 s
->n_chan
= boardtype
.ad_chan
/ 2;
539 s
->maxdata
= (1 << boardtype
.adbits
) - 1;
540 s
->range_table
= ai_range_lkup(boardtype
.adrangetype
, it
->options
[3]);
541 s
->insn_read
= dt2801_ai_insn_read
;
545 s
->type
= COMEDI_SUBD_AO
;
546 s
->subdev_flags
= SDF_WRITABLE
;
548 s
->maxdata
= (1 << boardtype
.dabits
) - 1;
549 s
->range_table_list
= devpriv
->dac_range_types
;
550 devpriv
->dac_range_types
[0] = dac_range_lkup(it
->options
[4]);
551 devpriv
->dac_range_types
[1] = dac_range_lkup(it
->options
[5]);
552 s
->insn_read
= dt2801_ao_insn_read
;
553 s
->insn_write
= dt2801_ao_insn_write
;
556 /* 1st digital subdevice */
557 s
->type
= COMEDI_SUBD_DIO
;
558 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
561 s
->range_table
= &range_digital
;
562 s
->insn_bits
= dt2801_dio_insn_bits
;
563 s
->insn_config
= dt2801_dio_insn_config
;
566 /* 2nd digital subdevice */
567 s
->type
= COMEDI_SUBD_DIO
;
568 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
571 s
->range_table
= &range_digital
;
572 s
->insn_bits
= dt2801_dio_insn_bits
;
573 s
->insn_config
= dt2801_dio_insn_config
;
582 static int dt2801_detach(comedi_device
* dev
)
585 release_region(dev
->iobase
, DT2801_IOSIZE
);
590 static int dt2801_error(comedi_device
* dev
, int stat
)
593 if (stat
== -ETIME
) {
594 printk("dt2801: timeout\n");
596 printk("dt2801: error %d\n", stat
);
600 printk("dt2801: error status 0x%02x, resetting...\n", stat
);
608 static int dt2801_ai_insn_read(comedi_device
* dev
, comedi_subdevice
* s
,
609 comedi_insn
* insn
, unsigned int * data
)
615 for (i
= 0; i
< insn
->n
; i
++) {
616 stat
= dt2801_writecmd(dev
, DT_C_READ_ADIM
);
617 dt2801_writedata(dev
, CR_RANGE(insn
->chanspec
));
618 dt2801_writedata(dev
, CR_CHAN(insn
->chanspec
));
619 stat
= dt2801_readdata2(dev
, &d
);
622 return dt2801_error(dev
, stat
);
630 static int dt2801_ao_insn_read(comedi_device
* dev
, comedi_subdevice
* s
,
631 comedi_insn
* insn
, unsigned int * data
)
633 data
[0] = devpriv
->ao_readback
[CR_CHAN(insn
->chanspec
)];
638 static int dt2801_ao_insn_write(comedi_device
* dev
, comedi_subdevice
* s
,
639 comedi_insn
* insn
, unsigned int * data
)
641 dt2801_writecmd(dev
, DT_C_WRITE_DAIM
);
642 dt2801_writedata(dev
, CR_CHAN(insn
->chanspec
));
643 dt2801_writedata2(dev
, data
[0]);
645 devpriv
->ao_readback
[CR_CHAN(insn
->chanspec
)] = data
[0];
650 static int dt2801_dio_insn_bits(comedi_device
* dev
, comedi_subdevice
* s
,
651 comedi_insn
* insn
, unsigned int * data
)
655 if (s
== dev
->subdevices
+ 4)
661 s
->state
&= ~data
[0];
662 s
->state
|= (data
[0] & data
[1]);
663 dt2801_writecmd(dev
, DT_C_WRITE_DIG
);
664 dt2801_writedata(dev
, which
);
665 dt2801_writedata(dev
, s
->state
);
667 dt2801_writecmd(dev
, DT_C_READ_DIG
);
668 dt2801_writedata(dev
, which
);
669 dt2801_readdata(dev
, data
+ 1);
674 static int dt2801_dio_insn_config(comedi_device
* dev
, comedi_subdevice
* s
,
675 comedi_insn
* insn
, unsigned int * data
)
679 if (s
== dev
->subdevices
+ 4)
685 dt2801_writecmd(dev
, DT_C_SET_DIGOUT
);
688 dt2801_writecmd(dev
, DT_C_SET_DIGIN
);
690 dt2801_writedata(dev
, which
);