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.
159 static const struct atao_board atao_boards[] = {
170 #define thisboard ((struct atao_board *)dev->board_ptr)
172 struct atao_private {
178 /* Used for AO readback */
179 unsigned int ao_readback[10];
182 #define devpriv ((struct atao_private *)dev->private)
184 static int atao_attach(struct comedi_device * dev, struct comedi_devconfig * it);
185 static int atao_detach(struct comedi_device * dev);
186 static struct comedi_driver driver_atao = {
187 driver_name:"ni_at_ao",
191 board_name:&atao_boards[0].name,
192 offset:sizeof(struct atao_board),
193 num_names:sizeof(atao_boards) / sizeof(struct atao_board),
196 COMEDI_INITCLEANUP(driver_atao);
198 static void atao_reset(struct comedi_device * dev);
200 static int atao_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
201 struct comedi_insn * insn, unsigned int * data);
202 static int atao_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
203 struct comedi_insn * insn, unsigned int * data);
204 static int atao_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
205 struct comedi_insn * insn, unsigned int * data);
206 static int atao_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
207 struct comedi_insn * insn, unsigned int * data);
208 static int atao_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
209 struct comedi_insn * insn, unsigned int * data);
210 static int atao_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
211 struct comedi_insn * insn, unsigned int * data);
213 static int atao_attach(struct comedi_device * dev, struct comedi_devconfig * it)
215 struct comedi_subdevice *s;
216 unsigned long iobase;
219 iobase = it->options[0];
222 ao_unipolar = it->options[3];
224 printk("comedi%d: ni_at_ao: 0x%04lx", dev->minor, iobase);
226 if (!request_region(iobase, ATAO_SIZE, "ni_at_ao")) {
227 printk(" I/O port conflict\n");
230 dev->iobase = iobase;
232 //dev->board_ptr = atao_probe(dev);
234 dev->board_name = thisboard->name;
236 if (alloc_private(dev, sizeof(struct atao_private)) < 0)
239 if (alloc_subdevices(dev, 4) < 0)
242 s = dev->subdevices + 0;
243 /* analog output subdevice */
244 s->type = COMEDI_SUBD_AO;
245 s->subdev_flags = SDF_WRITABLE;
246 s->n_chan = thisboard->n_ao_chans;
247 s->maxdata = (1 << 12) - 1;
249 s->range_table = &range_unipolar10;
251 s->range_table = &range_bipolar10;
252 s->insn_write = &atao_ao_winsn;
253 s->insn_read = &atao_ao_rinsn;
255 s = dev->subdevices + 1;
256 /* digital i/o subdevice */
257 s->type = COMEDI_SUBD_DIO;
258 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
261 s->range_table = &range_digital;
262 s->insn_bits = atao_dio_insn_bits;
263 s->insn_config = atao_dio_insn_config;
265 s = dev->subdevices + 2;
266 /* caldac subdevice */
267 s->type = COMEDI_SUBD_CALIB;
268 s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
271 s->insn_read = atao_calib_insn_read;
272 s->insn_write = atao_calib_insn_write;
274 s = dev->subdevices + 3;
275 /* eeprom subdevice */
276 //s->type=COMEDI_SUBD_EEPROM;
277 s->type = COMEDI_SUBD_UNUSED;
286 static int atao_detach(struct comedi_device * dev)
288 printk("comedi%d: atao: remove\n", dev->minor);
291 release_region(dev->iobase, ATAO_SIZE);
296 static void atao_reset(struct comedi_device * dev)
298 /* This is the reset sequence described in the manual */
301 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
303 outb(RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
304 outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
305 outb(CNTRSEL0 | RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
308 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
311 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
313 inw(dev->iobase + ATAO_FIFO_CLEAR);
315 devpriv->cfg1 |= GRP2WR;
316 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
318 outw(0, dev->iobase + ATAO_2_INT1CLR);
319 outw(0, dev->iobase + ATAO_2_INT2CLR);
320 outw(0, dev->iobase + ATAO_2_DMATCCLR);
322 devpriv->cfg1 &= ~GRP2WR;
323 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
326 static int atao_ao_winsn(struct comedi_device * dev, struct comedi_subdevice * s,
327 struct comedi_insn * insn, unsigned int * data)
330 int chan = CR_CHAN(insn->chanspec);
333 for (i = 0; i < insn->n; i++) {
334 bits = data[i] - 0x800;
336 devpriv->cfg1 |= GRP2WR;
337 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
339 outw(bits, dev->iobase + ATAO_DACn(chan));
341 devpriv->cfg1 &= ~GRP2WR;
342 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
344 devpriv->ao_readback[chan] = data[i];
350 static int atao_ao_rinsn(struct comedi_device * dev, struct comedi_subdevice * s,
351 struct comedi_insn * insn, unsigned int * data)
354 int chan = CR_CHAN(insn->chanspec);
356 for (i = 0; i < insn->n; i++)
357 data[i] = devpriv->ao_readback[chan];
362 static int atao_dio_insn_bits(struct comedi_device * dev, struct comedi_subdevice * s,
363 struct comedi_insn * insn, unsigned int * data)
369 s->state &= ~data[0];
370 s->state |= data[0] & data[1];
371 outw(s->state, dev->iobase + ATAO_DOUT);
374 data[1] = inw(dev->iobase + ATAO_DIN);
379 static int atao_dio_insn_config(struct comedi_device * dev, struct comedi_subdevice * s,
380 struct comedi_insn * insn, unsigned int * data)
382 int chan = CR_CHAN(insn->chanspec);
383 unsigned int mask, bit;
385 /* The input or output configuration of each digital line is
386 * configured by a special insn_config instruction. chanspec
387 * contains the channel to be changed, and data[0] contains the
388 * value COMEDI_INPUT or COMEDI_OUTPUT. */
390 mask = (chan < 4) ? 0x0f : 0xf0;
391 bit = (chan < 4) ? DOUTEN1 : DOUTEN2;
394 case INSN_CONFIG_DIO_OUTPUT:
396 devpriv->cfg3 |= bit;
398 case INSN_CONFIG_DIO_INPUT:
400 devpriv->cfg3 &= ~bit;
402 case INSN_CONFIG_DIO_QUERY:
405 io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
413 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
419 * Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
420 * are 8-channel 8-bit DACs. These are most likely the calibration
421 * DACs. It is not explicitly stated in the manual how to access
422 * the caldacs, but we can guess.
424 static int atao_calib_insn_read(struct comedi_device * dev, struct comedi_subdevice * s,
425 struct comedi_insn * insn, unsigned int * data)
428 for (i = 0; i < insn->n; i++) {
429 data[i] = 0; /* XXX */
434 static int atao_calib_insn_write(struct comedi_device * dev, struct comedi_subdevice * s,
435 struct comedi_insn * insn, unsigned int * data)
437 unsigned int bitstring, bit;
438 unsigned int chan = CR_CHAN(insn->chanspec);
440 bitstring = ((chan & 0x7) << 8) | (data[insn->n - 1] & 0xff);
442 for (bit = 1 << (11 - 1); bit; bit >>= 1) {
443 outw(devpriv->cfg2 | ((bit & bitstring) ? SDATA : 0),
444 dev->iobase + ATAO_CFG2);
445 outw(devpriv->cfg2 | SCLK | ((bit & bitstring) ? SDATA : 0),
446 dev->iobase + ATAO_CFG2);
448 /* strobe the appropriate caldac */
449 outw(devpriv->cfg2 | (((chan >> 3) + 1) << 14),
450 dev->iobase + ATAO_CFG2);
451 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);