2 comedi/drivers/ni_at_ao.c
3 Driver for NI AT-AO-6/10 boards
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 2000,2002 David A. Schleef <ds@schleef.org>
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 Description: National Instruments AT-AO-6/10
26 Devices: [National Instruments] AT-AO-6 (at-ao-6), AT-AO-10 (at-ao-10)
29 Updated: Sun Dec 26 12:26:28 EST 2004
31 Configuration options:
32 [0] - I/O port base address
35 [3] - analog output range, set by jumpers on hardware (0 for -10 to 10V bipolar, 1 for 0V to 10V unipolar)
39 * Register-level programming information can be found in NI
40 * document 320379.pdf.
43 #include "../comedidev.h"
45 #include <linux/ioport.h>
48 /* registers with _2_ are accessed when GRP2WR is set in CFG1 */
50 #define ATAO_SIZE 0x20
52 #define ATAO_2_DMATCCLR 0x00 /* W 16 */
53 #define ATAO_DIN 0x00 /* R 16 */
54 #define ATAO_DOUT 0x00 /* W 16 */
56 #define ATAO_CFG2 0x02 /* W 16 */
74 #define ATAO_2_INT1CLR 0x02 /* W 16 */
76 #define ATAO_CFG3 0x04 /* W 16 */
77 #define DMAMODE 0x0040
80 #define DOUTEN2 0x0008
81 #define DOUTEN1 0x0004
85 #define ATAO_2_INT2CLR 0x04 /* W 16 */
87 #define ATAO_82C53_BASE 0x06 /* RW 8 */
89 #define ATAO_82C53_CNTR1 0x06 /* RW 8 */
90 #define ATAO_82C53_CNTR2 0x07 /* RW 8 */
91 #define ATAO_82C53_CNTR3 0x08 /* RW 8 */
92 #define ATAO_82C53_CNTRCMD 0x09 /* W 8 */
101 /* read-back command */
117 #define ATAO_2_RTSISHFT 0x06 /* W 8 */
120 #define ATAO_2_RTSISTRB 0x07 /* W 8 */
122 #define ATAO_CFG1 0x0a /* W 16 */
123 #define EXTINT2EN 0x8000
124 #define EXTINT1EN 0x4000
125 #define CNTINT2EN 0x2000
126 #define CNTINT1EN 0x1000
127 #define TCINTEN 0x0800
128 #define CNT1SRC 0x0400
129 #define CNT2SRC 0x0200
130 #define FIFOEN 0x0100
131 #define GRP2WR 0x0080
132 #define EXTUPDEN 0x0040
135 #define CH_mask 0x000f
136 #define ATAO_STATUS 0x0a /* R 16 */
143 #define PROMOUT 0x0001
145 #define ATAO_FIFO_WRITE 0x0c /* W 16 */
146 #define ATAO_FIFO_CLEAR 0x0c /* R 16 */
147 #define ATAO_DACn(x) (0x0c + 2*(x)) /* W */
150 * Board descriptions for two imaginary boards. Describing the
151 * boards in this way is optional, and completely driver-dependent.
152 * Some drivers use arrays such as this, other do not.
154 typedef struct atao_board_struct {
158 static const atao_board atao_boards[] = {
169 #define thisboard ((atao_board *)dev->board_ptr)
176 /* Used for AO readback */
177 unsigned int ao_readback[10];
179 #define devpriv ((atao_private *)dev->private)
181 static int atao_attach(struct comedi_device * dev, comedi_devconfig * it);
182 static int atao_detach(struct comedi_device * dev);
183 static struct comedi_driver driver_atao = {
184 driver_name:"ni_at_ao",
188 board_name:&atao_boards[0].name,
189 offset:sizeof(atao_board),
190 num_names:sizeof(atao_boards) / sizeof(atao_board),
193 COMEDI_INITCLEANUP(driver_atao);
195 static void atao_reset(struct comedi_device * dev);
197 static int atao_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
198 comedi_insn * insn, unsigned int * data);
199 static int atao_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
200 comedi_insn * insn, unsigned int * data);
201 static int atao_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
202 comedi_insn * insn, unsigned int * data);
203 static int atao_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
204 comedi_insn * insn, unsigned int * data);
205 static int atao_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
206 comedi_insn * insn, unsigned int * data);
207 static int atao_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
208 comedi_insn * insn, unsigned int * data);
210 static int atao_attach(struct comedi_device * dev, comedi_devconfig * it)
212 struct comedi_subdevice *s;
213 unsigned long iobase;
216 iobase = it->options[0];
219 ao_unipolar = it->options[3];
221 printk("comedi%d: ni_at_ao: 0x%04lx", dev->minor, iobase);
223 if (!request_region(iobase, ATAO_SIZE, "ni_at_ao")) {
224 printk(" I/O port conflict\n");
227 dev->iobase = iobase;
229 //dev->board_ptr = atao_probe(dev);
231 dev->board_name = thisboard->name;
233 if (alloc_private(dev, sizeof(atao_private)) < 0)
236 if (alloc_subdevices(dev, 4) < 0)
239 s = dev->subdevices + 0;
240 /* analog output subdevice */
241 s->type = COMEDI_SUBD_AO;
242 s->subdev_flags = SDF_WRITABLE;
243 s->n_chan = thisboard->n_ao_chans;
244 s->maxdata = (1 << 12) - 1;
246 s->range_table = &range_unipolar10;
248 s->range_table = &range_bipolar10;
249 s->insn_write = &atao_ao_winsn;
250 s->insn_read = &atao_ao_rinsn;
252 s = dev->subdevices + 1;
253 /* digital i/o subdevice */
254 s->type = COMEDI_SUBD_DIO;
255 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
258 s->range_table = &range_digital;
259 s->insn_bits = atao_dio_insn_bits;
260 s->insn_config = atao_dio_insn_config;
262 s = dev->subdevices + 2;
263 /* caldac subdevice */
264 s->type = COMEDI_SUBD_CALIB;
265 s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
268 s->insn_read = atao_calib_insn_read;
269 s->insn_write = atao_calib_insn_write;
271 s = dev->subdevices + 3;
272 /* eeprom subdevice */
273 //s->type=COMEDI_SUBD_EEPROM;
274 s->type = COMEDI_SUBD_UNUSED;
283 static int atao_detach(struct comedi_device * dev)
285 printk("comedi%d: atao: remove\n", dev->minor);
288 release_region(dev->iobase, ATAO_SIZE);
293 static void atao_reset(struct comedi_device * dev)
295 /* This is the reset sequence described in the manual */
298 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
300 outb(RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
301 outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
302 outb(CNTRSEL0 | RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
305 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
308 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
310 inw(dev->iobase + ATAO_FIFO_CLEAR);
312 devpriv->cfg1 |= GRP2WR;
313 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
315 outw(0, dev->iobase + ATAO_2_INT1CLR);
316 outw(0, dev->iobase + ATAO_2_INT2CLR);
317 outw(0, dev->iobase + ATAO_2_DMATCCLR);
319 devpriv->cfg1 &= ~GRP2WR;
320 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
323 static int atao_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
324 comedi_insn * insn, unsigned int * data)
327 int chan = CR_CHAN(insn->chanspec);
330 for (i = 0; i < insn->n; i++) {
331 bits = data[i] - 0x800;
333 devpriv->cfg1 |= GRP2WR;
334 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
336 outw(bits, dev->iobase + ATAO_DACn(chan));
338 devpriv->cfg1 &= ~GRP2WR;
339 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
341 devpriv->ao_readback[chan] = data[i];
347 static int atao_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
348 comedi_insn * insn, unsigned int * data)
351 int chan = CR_CHAN(insn->chanspec);
353 for (i = 0; i < insn->n; i++)
354 data[i] = devpriv->ao_readback[chan];
359 static int atao_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
360 comedi_insn * insn, unsigned int * data)
366 s->state &= ~data[0];
367 s->state |= data[0] & data[1];
368 outw(s->state, dev->iobase + ATAO_DOUT);
371 data[1] = inw(dev->iobase + ATAO_DIN);
376 static int atao_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
377 comedi_insn * insn, unsigned int * data)
379 int chan = CR_CHAN(insn->chanspec);
380 unsigned int mask, bit;
382 /* The input or output configuration of each digital line is
383 * configured by a special insn_config instruction. chanspec
384 * contains the channel to be changed, and data[0] contains the
385 * value COMEDI_INPUT or COMEDI_OUTPUT. */
387 mask = (chan < 4) ? 0x0f : 0xf0;
388 bit = (chan < 4) ? DOUTEN1 : DOUTEN2;
391 case INSN_CONFIG_DIO_OUTPUT:
393 devpriv->cfg3 |= bit;
395 case INSN_CONFIG_DIO_INPUT:
397 devpriv->cfg3 &= ~bit;
399 case INSN_CONFIG_DIO_QUERY:
402 io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
410 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
416 * Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
417 * are 8-channel 8-bit DACs. These are most likely the calibration
418 * DACs. It is not explicitly stated in the manual how to access
419 * the caldacs, but we can guess.
421 static int atao_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
422 comedi_insn * insn, unsigned int * data)
425 for (i = 0; i < insn->n; i++) {
426 data[i] = 0; /* XXX */
431 static int atao_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
432 comedi_insn * insn, unsigned int * data)
434 unsigned int bitstring, bit;
435 unsigned int chan = CR_CHAN(insn->chanspec);
437 bitstring = ((chan & 0x7) << 8) | (data[insn->n - 1] & 0xff);
439 for (bit = 1 << (11 - 1); bit; bit >>= 1) {
440 outw(devpriv->cfg2 | ((bit & bitstring) ? SDATA : 0),
441 dev->iobase + ATAO_CFG2);
442 outw(devpriv->cfg2 | SCLK | ((bit & bitstring) ? SDATA : 0),
443 dev->iobase + ATAO_CFG2);
445 /* strobe the appropriate caldac */
446 outw(devpriv->cfg2 | (((chan >> 3) + 1) << 14),
447 dev->iobase + ATAO_CFG2);
448 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);