2 comedi/drivers/dt2811.c
3 Hardware driver for Data Translation DT2811
5 COMEDI - Linux Control and Measurement Device Interface
7 Base Version - David A. Schleef <ds@schleef.org>
8 December 1998 - Updated to work. David does not have a DT2811
9 board any longer so this was suffering from bitrot.
10 Updated performed by ...
12 This program is free software; you can redistribute it and/or modify
13 it under the terms of the GNU General Public License as published by
14 the Free Software Foundation; either version 2 of the License, or
15 (at your option) any later version.
17 This program is distributed in the hope that it will be useful,
18 but WITHOUT ANY WARRANTY; without even the implied warranty of
19 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 GNU General Public License for more details.
22 You should have received a copy of the GNU General Public License
23 along with this program; if not, write to the Free Software
24 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 Description: Data Translation DT2811
30 Devices: [Data Translation] DT2811-PGL (dt2811-pgl), DT2811-PGH (dt2811-pgh)
33 Configuration options:
34 [0] - I/O port base address
35 [1] - IRQ, although this is currently unused
39 2 = pseudo-differential (common reference)
44 [4] - D/A 0 range (same choices)
45 [4] - D/A 1 range (same choices)
48 #include <linux/interrupt.h>
49 #include "../comedidev.h"
51 #include <linux/ioport.h>
53 static const char *driver_name = "dt2811";
55 static const struct comedi_lrange range_dt2811_pgh_ai_5_unipolar = {
64 static const struct comedi_lrange range_dt2811_pgh_ai_2_5_bipolar = {
69 RANGE(-0.3125, 0.3125)
73 static const struct comedi_lrange range_dt2811_pgh_ai_5_bipolar = {
82 static const struct comedi_lrange range_dt2811_pgl_ai_5_unipolar = {
91 static const struct comedi_lrange range_dt2811_pgl_ai_2_5_bipolar = {
100 static const struct comedi_lrange range_dt2811_pgl_ai_5_bipolar = {
111 0x00 ADCSR R/W A/D Control/Status Register
112 bit 7 - (R) 1 indicates A/D conversion done
113 reading ADDAT clears bit
115 bit 6 - (R) 1 indicates A/D error
117 bit 5 - (R) 1 indicates A/D busy, cleared at end
123 bit 2 - (R/W) 1 indicates interrupts enabled
124 bits 1,0 - (R/W) mode bits
125 00 single conversion on ADGCR load
126 01 continuous conversion, internal clock,
127 (clock enabled on ADGCR load)
128 10 continuous conversion, internal clock,
130 11 continuous conversion, external clock,
133 0x01 ADGCR R/W A/D Gain/Channel Register
134 bit 6,7 - (R/W) gain select
135 00 gain=1, both PGH, PGL models
136 01 gain=2 PGH, 10 PGL
137 10 gain=4 PGH, 100 PGL
138 11 gain=8 PGH, 500 PGL
140 bit 3-0 - (R/W) channel select
141 channel number from 0-15
143 0x02,0x03 (R) ADDAT A/D Data Register
144 (W) DADAT0 D/A Data Register 0
148 0x04,0x05 (W) DADAT0 D/A Data Register 1
150 0x06 (R) DIO0 Digital Input Port 0
151 (W) DIO1 Digital Output Port 1
153 0x07 TMRCTR (R/W) Timer/Counter Register
155 bits 5-3 - Timer frequency control (mantissa)
156 543 divisor freqency (kHz)
165 bits 2-0 - Timer frequency control (exponent)
166 210 multiply divisor/divide frequency by
178 #define TIMEOUT 10000
180 #define DT2811_SIZE 8
182 #define DT2811_ADCSR 0
183 #define DT2811_ADGCR 1
184 #define DT2811_ADDATLO 2
185 #define DT2811_ADDATHI 3
186 #define DT2811_DADAT0LO 2
187 #define DT2811_DADAT0HI 3
188 #define DT2811_DADAT1LO 4
189 #define DT2811_DADAT1HI 5
191 #define DT2811_TMRCTR 7
199 #define DT2811_ADDONE 0x80
200 #define DT2811_ADERROR 0x40
201 #define DT2811_ADBUSY 0x20
202 #define DT2811_CLRERROR 0x10
203 #define DT2811_INTENB 0x04
204 #define DT2811_ADMODE 0x03
206 struct dt2811_board {
209 const struct comedi_lrange *bip_5;
210 const struct comedi_lrange *bip_2_5;
211 const struct comedi_lrange *unip_5;
214 enum { card_2811_pgh, card_2811_pgl };
216 struct dt2811_private {
220 adc_singleended, adc_diff, adc_pseudo_diff
223 dac_bipolar_5, dac_bipolar_2_5, dac_unipolar_5
225 const struct comedi_lrange *range_type_list[2];
226 unsigned int ao_readback[2];
229 #define devpriv ((struct dt2811_private *)dev->private)
231 static const struct comedi_lrange *dac_range_types[] = {
237 #define DT2811_TIMEOUT 5
240 static irqreturn_t dt2811_interrupt(int irq, void *d)
244 struct comedi_device *dev = d;
246 if (!dev->attached) {
247 comedi_error(dev, "spurious interrupt");
251 lo = inb(dev->iobase + DT2811_ADDATLO);
252 hi = inb(dev->iobase + DT2811_ADDATHI);
254 data = lo + (hi << 8);
256 if (!(--devpriv->ntrig)) {
257 /* how to turn off acquisition */
258 s->async->events |= COMEDI_SB_EOA;
260 comedi_event(dev, s);
265 static int dt2811_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
266 struct comedi_insn *insn, unsigned int *data)
268 int chan = CR_CHAN(insn->chanspec);
269 int timeout = DT2811_TIMEOUT;
272 for (i = 0; i < insn->n; i++) {
273 outb(chan, dev->iobase + DT2811_ADGCR);
276 && inb(dev->iobase + DT2811_ADCSR) & DT2811_ADBUSY)
281 data[i] = inb(dev->iobase + DT2811_ADDATLO);
282 data[i] |= inb(dev->iobase + DT2811_ADDATHI) << 8;
290 /* Wow. This is code from the Comedi stone age. But it hasn't been
291 * replaced, so I'll let it stay. */
292 int dt2811_adtrig(kdev_t minor, comedi_adtrig *adtrig)
294 struct comedi_device *dev = comedi_devices + minor;
298 dev->curadchan = adtrig->chan;
299 switch (dev->i_admode) {
301 dev->ntrig = adtrig->n - 1;
303 /*printk("dt2811: AD soft trigger\n"); */
304 /*outb(DT2811_CLRERROR|DT2811_INTENB,
305 dev->iobase+DT2811_ADCSR); */
306 outb(dev->curadchan, dev->iobase + DT2811_ADGCR);
307 do_gettimeofday(&trigtime);
310 dev->ntrig = adtrig->n;
318 static int dt2811_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
319 struct comedi_insn *insn, unsigned int *data)
324 chan = CR_CHAN(insn->chanspec);
326 for (i = 0; i < insn->n; i++) {
327 outb(data[i] & 0xff, dev->iobase + DT2811_DADAT0LO + 2 * chan);
328 outb((data[i] >> 8) & 0xff,
329 dev->iobase + DT2811_DADAT0HI + 2 * chan);
330 devpriv->ao_readback[chan] = data[i];
336 static int dt2811_ao_insn_read(struct comedi_device *dev,
337 struct comedi_subdevice *s,
338 struct comedi_insn *insn, unsigned int *data)
343 chan = CR_CHAN(insn->chanspec);
345 for (i = 0; i < insn->n; i++)
346 data[i] = devpriv->ao_readback[chan];
351 static int dt2811_di_insn_bits(struct comedi_device *dev,
352 struct comedi_subdevice *s,
353 struct comedi_insn *insn, unsigned int *data)
355 data[1] = inb(dev->iobase + DT2811_DIO);
360 static int dt2811_do_insn_bits(struct comedi_device *dev,
361 struct comedi_subdevice *s,
362 struct comedi_insn *insn, unsigned int *data)
364 s->state &= ~data[0];
365 s->state |= data[0] & data[1];
366 outb(s->state, dev->iobase + DT2811_DIO);
374 options[0] Board base address
376 options[2] Input configuration
379 2 == pseudo-differential
380 options[3] Analog input range configuration
381 0 == bipolar 5 (-5V -- +5V)
382 1 == bipolar 2.5V (-2.5V -- +2.5V)
383 2 == unipolar 5V (0V -- +5V)
384 options[4] Analog output 0 range configuration
385 0 == bipolar 5 (-5V -- +5V)
386 1 == bipolar 2.5V (-2.5V -- +2.5V)
387 2 == unipolar 5V (0V -- +5V)
388 options[5] Analog output 1 range configuration
389 0 == bipolar 5 (-5V -- +5V)
390 1 == bipolar 2.5V (-2.5V -- +2.5V)
391 2 == unipolar 5V (0V -- +5V)
393 static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it)
396 /* unsigned long irqs; */
399 const struct dt2811_board *board = comedi_board(dev);
401 struct comedi_subdevice *s;
402 unsigned long iobase;
404 iobase = it->options[0];
406 printk(KERN_INFO "comedi%d: dt2811:base=0x%04lx\n", dev->minor, iobase);
408 if (!request_region(iobase, DT2811_SIZE, driver_name)) {
409 printk(KERN_ERR "I/O port conflict\n");
413 dev->iobase = iobase;
414 dev->board_name = board->name;
417 outb(0, dev->iobase + DT2811_ADCSR);
419 i = inb(dev->iobase + DT2811_ADDATLO);
420 i = inb(dev->iobase + DT2811_ADDATHI);
424 irq = it->options[1];
428 irqs = probe_irq_on();
430 outb(DT2811_CLRERROR | DT2811_INTENB,
431 dev->iobase + DT2811_ADCSR);
432 outb(0, dev->iobase + DT2811_ADGCR);
436 irq = probe_irq_off(irqs);
437 restore_flags(flags);
439 /*outb(DT2811_CLRERROR|DT2811_INTENB,
440 dev->iobase+DT2811_ADCSR);*/
442 if (inb(dev->iobase + DT2811_ADCSR) & DT2811_ADERROR)
443 printk(KERN_ERR "error probing irq (bad)\n");
446 i = inb(dev->iobase + DT2811_ADDATLO);
447 i = inb(dev->iobase + DT2811_ADDATHI);
448 printk(KERN_INFO "(irq = %d)\n", irq);
449 ret = request_irq(irq, dt2811_interrupt, 0,
454 } else if (irq == 0) {
455 printk(KERN_INFO "(no irq)\n");
457 printk(KERN_ERR "( multiple irq's -- this is bad! )\n");
462 ret = comedi_alloc_subdevices(dev, 4);
466 ret = alloc_private(dev, sizeof(struct dt2811_private));
470 switch (it->options[2]) {
472 devpriv->adc_mux = adc_singleended;
475 devpriv->adc_mux = adc_diff;
478 devpriv->adc_mux = adc_pseudo_diff;
481 devpriv->adc_mux = adc_singleended;
484 switch (it->options[4]) {
486 devpriv->dac_range[0] = dac_bipolar_5;
489 devpriv->dac_range[0] = dac_bipolar_2_5;
492 devpriv->dac_range[0] = dac_unipolar_5;
495 devpriv->dac_range[0] = dac_bipolar_5;
498 switch (it->options[5]) {
500 devpriv->dac_range[1] = dac_bipolar_5;
503 devpriv->dac_range[1] = dac_bipolar_2_5;
506 devpriv->dac_range[1] = dac_unipolar_5;
509 devpriv->dac_range[1] = dac_bipolar_5;
513 s = dev->subdevices + 0;
514 /* initialize the ADC subdevice */
515 s->type = COMEDI_SUBD_AI;
516 s->subdev_flags = SDF_READABLE | SDF_GROUND;
517 s->n_chan = devpriv->adc_mux == adc_diff ? 8 : 16;
518 s->insn_read = dt2811_ai_insn;
520 switch (it->options[3]) {
523 s->range_table = board->bip_5;
526 s->range_table = board->bip_2_5;
529 s->range_table = board->unip_5;
533 s = dev->subdevices + 1;
535 s->type = COMEDI_SUBD_AO;
536 s->subdev_flags = SDF_WRITABLE;
538 s->insn_write = dt2811_ao_insn;
539 s->insn_read = dt2811_ao_insn_read;
541 s->range_table_list = devpriv->range_type_list;
542 devpriv->range_type_list[0] = dac_range_types[devpriv->dac_range[0]];
543 devpriv->range_type_list[1] = dac_range_types[devpriv->dac_range[1]];
545 s = dev->subdevices + 2;
547 s->type = COMEDI_SUBD_DI;
548 s->subdev_flags = SDF_READABLE;
550 s->insn_bits = dt2811_di_insn_bits;
552 s->range_table = &range_digital;
554 s = dev->subdevices + 3;
556 s->type = COMEDI_SUBD_DO;
557 s->subdev_flags = SDF_WRITABLE;
559 s->insn_bits = dt2811_do_insn_bits;
562 s->range_table = &range_digital;
567 static void dt2811_detach(struct comedi_device *dev)
570 free_irq(dev->irq, dev);
572 release_region(dev->iobase, DT2811_SIZE);
575 static const struct dt2811_board boardtypes[] = {
577 .name = "dt2811-pgh",
578 .bip_5 = &range_dt2811_pgh_ai_5_bipolar,
579 .bip_2_5 = &range_dt2811_pgh_ai_2_5_bipolar,
580 .unip_5 = &range_dt2811_pgh_ai_5_unipolar,
582 .name = "dt2811-pgl",
583 .bip_5 = &range_dt2811_pgl_ai_5_bipolar,
584 .bip_2_5 = &range_dt2811_pgl_ai_2_5_bipolar,
585 .unip_5 = &range_dt2811_pgl_ai_5_unipolar,
589 static struct comedi_driver dt2811_driver = {
590 .driver_name = "dt2811",
591 .module = THIS_MODULE,
592 .attach = dt2811_attach,
593 .detach = dt2811_detach,
594 .board_name = &boardtypes[0].name,
595 .num_names = ARRAY_SIZE(boardtypes),
596 .offset = sizeof(struct dt2811_board),
598 module_comedi_driver(dt2811_driver);
600 MODULE_AUTHOR("Comedi http://www.comedi.org");
601 MODULE_DESCRIPTION("Comedi low-level driver");
602 MODULE_LICENSE("GPL");