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 #define this_board ((const struct dt2811_board *)dev->board_ptr)
216 enum { card_2811_pgh, card_2811_pgl };
218 struct dt2811_private {
222 adc_singleended, adc_diff, adc_pseudo_diff
225 dac_bipolar_5, dac_bipolar_2_5, dac_unipolar_5
227 const struct comedi_lrange *range_type_list[2];
228 unsigned int ao_readback[2];
231 #define devpriv ((struct dt2811_private *)dev->private)
233 static const struct comedi_lrange *dac_range_types[] = {
239 #define DT2811_TIMEOUT 5
242 static irqreturn_t dt2811_interrupt(int irq, void *d)
246 struct comedi_device *dev = d;
248 if (!dev->attached) {
249 comedi_error(dev, "spurious interrupt");
253 lo = inb(dev->iobase + DT2811_ADDATLO);
254 hi = inb(dev->iobase + DT2811_ADDATHI);
256 data = lo + (hi << 8);
258 if (!(--devpriv->ntrig)) {
259 /* how to turn off acquisition */
260 s->async->events |= COMEDI_SB_EOA;
262 comedi_event(dev, s);
267 static int dt2811_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
268 struct comedi_insn *insn, unsigned int *data)
270 int chan = CR_CHAN(insn->chanspec);
271 int timeout = DT2811_TIMEOUT;
274 for (i = 0; i < insn->n; i++) {
275 outb(chan, dev->iobase + DT2811_ADGCR);
278 && inb(dev->iobase + DT2811_ADCSR) & DT2811_ADBUSY)
283 data[i] = inb(dev->iobase + DT2811_ADDATLO);
284 data[i] |= inb(dev->iobase + DT2811_ADDATHI) << 8;
292 /* Wow. This is code from the Comedi stone age. But it hasn't been
293 * replaced, so I'll let it stay. */
294 int dt2811_adtrig(kdev_t minor, comedi_adtrig *adtrig)
296 struct comedi_device *dev = comedi_devices + minor;
300 dev->curadchan = adtrig->chan;
301 switch (dev->i_admode) {
303 dev->ntrig = adtrig->n - 1;
305 /*printk("dt2811: AD soft trigger\n"); */
306 /*outb(DT2811_CLRERROR|DT2811_INTENB,
307 dev->iobase+DT2811_ADCSR); */
308 outb(dev->curadchan, dev->iobase + DT2811_ADGCR);
309 do_gettimeofday(&trigtime);
312 dev->ntrig = adtrig->n;
320 static int dt2811_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
321 struct comedi_insn *insn, unsigned int *data)
326 chan = CR_CHAN(insn->chanspec);
328 for (i = 0; i < insn->n; i++) {
329 outb(data[i] & 0xff, dev->iobase + DT2811_DADAT0LO + 2 * chan);
330 outb((data[i] >> 8) & 0xff,
331 dev->iobase + DT2811_DADAT0HI + 2 * chan);
332 devpriv->ao_readback[chan] = data[i];
338 static int dt2811_ao_insn_read(struct comedi_device *dev,
339 struct comedi_subdevice *s,
340 struct comedi_insn *insn, unsigned int *data)
345 chan = CR_CHAN(insn->chanspec);
347 for (i = 0; i < insn->n; i++)
348 data[i] = devpriv->ao_readback[chan];
353 static int dt2811_di_insn_bits(struct comedi_device *dev,
354 struct comedi_subdevice *s,
355 struct comedi_insn *insn, unsigned int *data)
360 data[1] = inb(dev->iobase + DT2811_DIO);
365 static int dt2811_do_insn_bits(struct comedi_device *dev,
366 struct comedi_subdevice *s,
367 struct comedi_insn *insn, unsigned int *data)
372 s->state &= ~data[0];
373 s->state |= data[0] & data[1];
374 outb(s->state, dev->iobase + DT2811_DIO);
382 options[0] Board base address
384 options[2] Input configuration
387 2 == pseudo-differential
388 options[3] Analog input range configuration
389 0 == bipolar 5 (-5V -- +5V)
390 1 == bipolar 2.5V (-2.5V -- +2.5V)
391 2 == unipolar 5V (0V -- +5V)
392 options[4] Analog output 0 range configuration
393 0 == bipolar 5 (-5V -- +5V)
394 1 == bipolar 2.5V (-2.5V -- +2.5V)
395 2 == unipolar 5V (0V -- +5V)
396 options[5] Analog output 1 range configuration
397 0 == bipolar 5 (-5V -- +5V)
398 1 == bipolar 2.5V (-2.5V -- +2.5V)
399 2 == unipolar 5V (0V -- +5V)
401 static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it)
404 /* unsigned long irqs; */
408 struct comedi_subdevice *s;
409 unsigned long iobase;
411 iobase = it->options[0];
413 printk(KERN_INFO "comedi%d: dt2811:base=0x%04lx\n", dev->minor, iobase);
415 if (!request_region(iobase, DT2811_SIZE, driver_name)) {
416 printk(KERN_ERR "I/O port conflict\n");
420 dev->iobase = iobase;
421 dev->board_name = this_board->name;
424 outb(0, dev->iobase + DT2811_ADCSR);
426 i = inb(dev->iobase + DT2811_ADDATLO);
427 i = inb(dev->iobase + DT2811_ADDATHI);
431 irq = it->options[1];
435 irqs = probe_irq_on();
437 outb(DT2811_CLRERROR | DT2811_INTENB,
438 dev->iobase + DT2811_ADCSR);
439 outb(0, dev->iobase + DT2811_ADGCR);
443 irq = probe_irq_off(irqs);
444 restore_flags(flags);
446 /*outb(DT2811_CLRERROR|DT2811_INTENB,
447 dev->iobase+DT2811_ADCSR);*/
449 if (inb(dev->iobase + DT2811_ADCSR) & DT2811_ADERROR)
450 printk(KERN_ERR "error probing irq (bad)\n");
453 i = inb(dev->iobase + DT2811_ADDATLO);
454 i = inb(dev->iobase + DT2811_ADDATHI);
455 printk(KERN_INFO "(irq = %d)\n", irq);
456 ret = request_irq(irq, dt2811_interrupt, 0,
461 } else if (irq == 0) {
462 printk(KERN_INFO "(no irq)\n");
464 printk(KERN_ERR "( multiple irq's -- this is bad! )\n");
469 ret = alloc_subdevices(dev, 4);
473 ret = alloc_private(dev, sizeof(struct dt2811_private));
477 switch (it->options[2]) {
479 devpriv->adc_mux = adc_singleended;
482 devpriv->adc_mux = adc_diff;
485 devpriv->adc_mux = adc_pseudo_diff;
488 devpriv->adc_mux = adc_singleended;
491 switch (it->options[4]) {
493 devpriv->dac_range[0] = dac_bipolar_5;
496 devpriv->dac_range[0] = dac_bipolar_2_5;
499 devpriv->dac_range[0] = dac_unipolar_5;
502 devpriv->dac_range[0] = dac_bipolar_5;
505 switch (it->options[5]) {
507 devpriv->dac_range[1] = dac_bipolar_5;
510 devpriv->dac_range[1] = dac_bipolar_2_5;
513 devpriv->dac_range[1] = dac_unipolar_5;
516 devpriv->dac_range[1] = dac_bipolar_5;
520 s = dev->subdevices + 0;
521 /* initialize the ADC subdevice */
522 s->type = COMEDI_SUBD_AI;
523 s->subdev_flags = SDF_READABLE | SDF_GROUND;
524 s->n_chan = devpriv->adc_mux == adc_diff ? 8 : 16;
525 s->insn_read = dt2811_ai_insn;
527 switch (it->options[3]) {
530 s->range_table = this_board->bip_5;
533 s->range_table = this_board->bip_2_5;
536 s->range_table = this_board->unip_5;
540 s = dev->subdevices + 1;
542 s->type = COMEDI_SUBD_AO;
543 s->subdev_flags = SDF_WRITABLE;
545 s->insn_write = dt2811_ao_insn;
546 s->insn_read = dt2811_ao_insn_read;
548 s->range_table_list = devpriv->range_type_list;
549 devpriv->range_type_list[0] = dac_range_types[devpriv->dac_range[0]];
550 devpriv->range_type_list[1] = dac_range_types[devpriv->dac_range[1]];
552 s = dev->subdevices + 2;
554 s->type = COMEDI_SUBD_DI;
555 s->subdev_flags = SDF_READABLE;
557 s->insn_bits = dt2811_di_insn_bits;
559 s->range_table = &range_digital;
561 s = dev->subdevices + 3;
563 s->type = COMEDI_SUBD_DO;
564 s->subdev_flags = SDF_WRITABLE;
566 s->insn_bits = dt2811_do_insn_bits;
569 s->range_table = &range_digital;
574 static void dt2811_detach(struct comedi_device *dev)
577 free_irq(dev->irq, dev);
579 release_region(dev->iobase, DT2811_SIZE);
582 static const struct dt2811_board boardtypes[] = {
584 .name = "dt2811-pgh",
585 .bip_5 = &range_dt2811_pgh_ai_5_bipolar,
586 .bip_2_5 = &range_dt2811_pgh_ai_2_5_bipolar,
587 .unip_5 = &range_dt2811_pgh_ai_5_unipolar,
589 .name = "dt2811-pgl",
590 .bip_5 = &range_dt2811_pgl_ai_5_bipolar,
591 .bip_2_5 = &range_dt2811_pgl_ai_2_5_bipolar,
592 .unip_5 = &range_dt2811_pgl_ai_5_unipolar,
596 static struct comedi_driver dt2811_driver = {
597 .driver_name = "dt2811",
598 .module = THIS_MODULE,
599 .attach = dt2811_attach,
600 .detach = dt2811_detach,
601 .board_name = &boardtypes[0].name,
602 .num_names = ARRAY_SIZE(boardtypes),
603 .offset = sizeof(struct dt2811_board),
605 module_comedi_driver(dt2811_driver);
607 MODULE_AUTHOR("Comedi http://www.comedi.org");
608 MODULE_DESCRIPTION("Comedi low-level driver");
609 MODULE_LICENSE("GPL");