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 "../comedidev.h"
50 #include <linux/ioport.h>
52 static const char *driver_name = "dt2811";
54 static const struct comedi_lrange range_dt2811_pgh_ai_5_unipolar = { 4, {
61 static const struct comedi_lrange range_dt2811_pgh_ai_2_5_bipolar = { 4, {
65 RANGE(-0.3125, 0.3125)
68 static const struct comedi_lrange range_dt2811_pgh_ai_5_bipolar = { 4, {
75 static const struct comedi_lrange range_dt2811_pgl_ai_5_unipolar = { 4, {
82 static const struct comedi_lrange range_dt2811_pgl_ai_2_5_bipolar = { 4, {
89 static const struct comedi_lrange range_dt2811_pgl_ai_5_bipolar = { 4, {
99 0x00 ADCSR R/W A/D Control/Status Register
100 bit 7 - (R) 1 indicates A/D conversion done
101 reading ADDAT clears bit
103 bit 6 - (R) 1 indicates A/D error
105 bit 5 - (R) 1 indicates A/D busy, cleared at end
111 bit 2 - (R/W) 1 indicates interrupts enabled
112 bits 1,0 - (R/W) mode bits
113 00 single conversion on ADGCR load
114 01 continuous conversion, internal clock,
115 (clock enabled on ADGCR load)
116 10 continuous conversion, internal clock,
118 11 continuous conversion, external clock,
121 0x01 ADGCR R/W A/D Gain/Channel Register
122 bit 6,7 - (R/W) gain select
123 00 gain=1, both PGH, PGL models
124 01 gain=2 PGH, 10 PGL
125 10 gain=4 PGH, 100 PGL
126 11 gain=8 PGH, 500 PGL
128 bit 3-0 - (R/W) channel select
129 channel number from 0-15
131 0x02,0x03 (R) ADDAT A/D Data Register
132 (W) DADAT0 D/A Data Register 0
136 0x04,0x05 (W) DADAT0 D/A Data Register 1
138 0x06 (R) DIO0 Digital Input Port 0
139 (W) DIO1 Digital Output Port 1
141 0x07 TMRCTR (R/W) Timer/Counter Register
143 bits 5-3 - Timer frequency control (mantissa)
144 543 divisor freqency (kHz)
153 bits 2-0 - Timer frequency control (exponent)
154 210 multiply divisor/divide frequency by
166 #define TIMEOUT 10000
168 #define DT2811_SIZE 8
170 #define DT2811_ADCSR 0
171 #define DT2811_ADGCR 1
172 #define DT2811_ADDATLO 2
173 #define DT2811_ADDATHI 3
174 #define DT2811_DADAT0LO 2
175 #define DT2811_DADAT0HI 3
176 #define DT2811_DADAT1LO 4
177 #define DT2811_DADAT1HI 5
179 #define DT2811_TMRCTR 7
187 #define DT2811_ADDONE 0x80
188 #define DT2811_ADERROR 0x40
189 #define DT2811_ADBUSY 0x20
190 #define DT2811_CLRERROR 0x10
191 #define DT2811_INTENB 0x04
192 #define DT2811_ADMODE 0x03
194 struct dt2811_board {
197 const struct comedi_lrange *bip_5;
198 const struct comedi_lrange *bip_2_5;
199 const struct comedi_lrange *unip_5;
202 static const struct dt2811_board boardtypes[] = {
204 &range_dt2811_pgh_ai_5_bipolar,
205 &range_dt2811_pgh_ai_2_5_bipolar,
206 &range_dt2811_pgh_ai_5_unipolar,
209 &range_dt2811_pgl_ai_5_bipolar,
210 &range_dt2811_pgl_ai_2_5_bipolar,
211 &range_dt2811_pgl_ai_5_unipolar,
215 #define this_board ((const struct dt2811_board *)dev->board_ptr)
217 static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it);
218 static int dt2811_detach(struct comedi_device *dev);
219 static struct comedi_driver driver_dt2811 = {
220 driver_name:"dt2811",
222 attach:dt2811_attach,
223 detach:dt2811_detach,
224 board_name:&boardtypes[0].name,
225 num_names:sizeof(boardtypes) / sizeof(struct dt2811_board),
226 offset:sizeof(struct dt2811_board),
229 COMEDI_INITCLEANUP(driver_dt2811);
231 static int dt2811_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
232 struct comedi_insn *insn, unsigned int *data);
233 static int dt2811_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
234 struct comedi_insn *insn, unsigned int *data);
235 static int dt2811_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s,
236 struct comedi_insn *insn, unsigned int *data);
237 static int dt2811_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
238 struct comedi_insn *insn, unsigned int *data);
239 static int dt2811_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
240 struct comedi_insn *insn, unsigned int *data);
242 enum { card_2811_pgh, card_2811_pgl };
244 struct dt2811_private {
248 adc_singleended, adc_diff, adc_pseudo_diff
251 dac_bipolar_5, dac_bipolar_2_5, dac_unipolar_5
253 const struct comedi_lrange *range_type_list[2];
254 unsigned int ao_readback[2];
257 #define devpriv ((struct dt2811_private *)dev->private)
259 static const struct comedi_lrange *dac_range_types[] = {
265 #define DT2811_TIMEOUT 5
268 static irqreturn_t dt2811_interrupt(int irq, void *d)
272 struct comedi_device *dev = d;
274 if (!dev->attached) {
275 comedi_error(dev, "spurious interrupt");
279 lo = inb(dev->iobase + DT2811_ADDATLO);
280 hi = inb(dev->iobase + DT2811_ADDATHI);
282 data = lo + (hi << 8);
284 if (!(--devpriv->ntrig)) {
285 /* how to turn off acquisition */
286 s->async->events |= COMEDI_SB_EOA;
288 comedi_event(dev, s);
294 options[0] Board base address
296 options[2] Input configuration
299 2 == pseudo-differential
300 options[3] Analog input range configuration
301 0 == bipolar 5 (-5V -- +5V)
302 1 == bipolar 2.5V (-2.5V -- +2.5V)
303 2 == unipolar 5V (0V -- +5V)
304 options[4] Analog output 0 range configuration
305 0 == bipolar 5 (-5V -- +5V)
306 1 == bipolar 2.5V (-2.5V -- +2.5V)
307 2 == unipolar 5V (0V -- +5V)
308 options[5] Analog output 1 range configuration
309 0 == bipolar 5 (-5V -- +5V)
310 1 == bipolar 2.5V (-2.5V -- +2.5V)
311 2 == unipolar 5V (0V -- +5V)
314 static int dt2811_attach(struct comedi_device *dev, struct comedi_devconfig *it)
317 /* unsigned long irqs; */
321 struct comedi_subdevice *s;
322 unsigned long iobase;
324 iobase = it->options[0];
326 printk("comedi%d: dt2811: base=0x%04lx\n", dev->minor, iobase);
328 if (!request_region(iobase, DT2811_SIZE, driver_name)) {
329 printk("I/O port conflict\n");
333 dev->iobase = iobase;
334 dev->board_name = this_board->name;
337 outb(0, dev->iobase + DT2811_ADCSR);
339 i = inb(dev->iobase + DT2811_ADDATLO);
340 i = inb(dev->iobase + DT2811_ADDATHI);
344 irq = it->options[1];
348 irqs = probe_irq_on();
350 outb(DT2811_CLRERROR | DT2811_INTENB,
351 dev->iobase + DT2811_ADCSR);
352 outb(0, dev->iobase + DT2811_ADGCR);
356 irq = probe_irq_off(irqs);
357 restore_flags(flags);
359 /*outb(DT2811_CLRERROR|DT2811_INTENB,dev->iobase+DT2811_ADCSR); */
361 if (inb(dev->iobase + DT2811_ADCSR) & DT2811_ADERROR) {
362 printk("error probing irq (bad) \n");
366 i = inb(dev->iobase + DT2811_ADDATLO);
367 i = inb(dev->iobase + DT2811_ADDATHI);
368 printk("(irq = %d)\n", irq);
369 ret = comedi_request_irq(irq, dt2811_interrupt, 0,
374 } else if (irq == 0) {
375 printk("(no irq)\n");
377 printk("( multiple irq's -- this is bad! )\n");
382 if ((ret = alloc_subdevices(dev, 4)) < 0)
384 if ((ret = alloc_private(dev, sizeof(struct dt2811_private))) < 0)
386 switch (it->options[2]) {
388 devpriv->adc_mux = adc_singleended;
391 devpriv->adc_mux = adc_diff;
394 devpriv->adc_mux = adc_pseudo_diff;
397 devpriv->adc_mux = adc_singleended;
400 switch (it->options[4]) {
402 devpriv->dac_range[0] = dac_bipolar_5;
405 devpriv->dac_range[0] = dac_bipolar_2_5;
408 devpriv->dac_range[0] = dac_unipolar_5;
411 devpriv->dac_range[0] = dac_bipolar_5;
414 switch (it->options[5]) {
416 devpriv->dac_range[1] = dac_bipolar_5;
419 devpriv->dac_range[1] = dac_bipolar_2_5;
422 devpriv->dac_range[1] = dac_unipolar_5;
425 devpriv->dac_range[1] = dac_bipolar_5;
429 s = dev->subdevices + 0;
430 /* initialize the ADC subdevice */
431 s->type = COMEDI_SUBD_AI;
432 s->subdev_flags = SDF_READABLE | SDF_GROUND;
433 s->n_chan = devpriv->adc_mux == adc_diff ? 8 : 16;
434 s->insn_read = dt2811_ai_insn;
436 switch (it->options[3]) {
439 s->range_table = this_board->bip_5;
442 s->range_table = this_board->bip_2_5;
445 s->range_table = this_board->unip_5;
449 s = dev->subdevices + 1;
451 s->type = COMEDI_SUBD_AO;
452 s->subdev_flags = SDF_WRITABLE;
454 s->insn_write = dt2811_ao_insn;
455 s->insn_read = dt2811_ao_insn_read;
457 s->range_table_list = devpriv->range_type_list;
458 devpriv->range_type_list[0] = dac_range_types[devpriv->dac_range[0]];
459 devpriv->range_type_list[1] = dac_range_types[devpriv->dac_range[1]];
461 s = dev->subdevices + 2;
463 s->type = COMEDI_SUBD_DI;
464 s->subdev_flags = SDF_READABLE;
466 s->insn_bits = dt2811_di_insn_bits;
468 s->range_table = &range_digital;
470 s = dev->subdevices + 3;
472 s->type = COMEDI_SUBD_DO;
473 s->subdev_flags = SDF_WRITABLE;
475 s->insn_bits = dt2811_do_insn_bits;
478 s->range_table = &range_digital;
483 static int dt2811_detach(struct comedi_device *dev)
485 printk("comedi%d: dt2811: remove\n", dev->minor);
488 comedi_free_irq(dev->irq, dev);
491 release_region(dev->iobase, DT2811_SIZE);
497 static int dt2811_ai_insn(struct comedi_device *dev, struct comedi_subdevice *s,
498 struct comedi_insn *insn, unsigned int *data)
500 int chan = CR_CHAN(insn->chanspec);
501 int timeout = DT2811_TIMEOUT;
504 for (i = 0; i < insn->n; i++) {
505 outb(chan, dev->iobase + DT2811_ADGCR);
508 && inb(dev->iobase + DT2811_ADCSR) & DT2811_ADBUSY)
513 data[i] = inb(dev->iobase + DT2811_ADDATLO);
514 data[i] |= inb(dev->iobase + DT2811_ADDATHI) << 8;
522 /* Wow. This is code from the Comedi stone age. But it hasn't been
523 * replaced, so I'll let it stay. */
524 int dt2811_adtrig(kdev_t minor, comedi_adtrig *adtrig)
526 struct comedi_device *dev = comedi_devices + minor;
530 dev->curadchan = adtrig->chan;
531 switch (dev->i_admode) {
533 dev->ntrig = adtrig->n - 1;
534 /*printk("dt2811: AD soft trigger\n"); */
535 /*outb(DT2811_CLRERROR|DT2811_INTENB,dev->iobase+DT2811_ADCSR); */ /* not neccessary */
536 outb(dev->curadchan, dev->iobase + DT2811_ADGCR);
537 do_gettimeofday(&trigtime);
540 dev->ntrig = adtrig->n;
548 static int dt2811_ao_insn(struct comedi_device *dev, struct comedi_subdevice *s,
549 struct comedi_insn *insn, unsigned int *data)
554 chan = CR_CHAN(insn->chanspec);
556 for (i = 0; i < insn->n; i++) {
557 outb(data[i] & 0xff, dev->iobase + DT2811_DADAT0LO + 2 * chan);
558 outb((data[i] >> 8) & 0xff,
559 dev->iobase + DT2811_DADAT0HI + 2 * chan);
560 devpriv->ao_readback[chan] = data[i];
566 static int dt2811_ao_insn_read(struct comedi_device *dev, struct comedi_subdevice *s,
567 struct comedi_insn *insn, unsigned int *data)
572 chan = CR_CHAN(insn->chanspec);
574 for (i = 0; i < insn->n; i++) {
575 data[i] = devpriv->ao_readback[chan];
581 static int dt2811_di_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
582 struct comedi_insn *insn, unsigned int *data)
587 data[1] = inb(dev->iobase + DT2811_DIO);
592 static int dt2811_do_insn_bits(struct comedi_device *dev, struct comedi_subdevice *s,
593 struct comedi_insn *insn, unsigned int *data)
598 s->state &= ~data[0];
599 s->state |= data[0] & data[1];
600 outb(s->state, dev->iobase + DT2811_DIO);