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.
21 * Description: National Instruments AT-AO-6/10
22 * Devices: (National Instruments) AT-AO-6 [at-ao-6]
23 * (National Instruments) AT-AO-10 [at-ao-10]
25 * Author: David A. Schleef <ds@schleef.org>
26 * Updated: Sun Dec 26 12:26:28 EST 2004
28 * Configuration options:
29 * [0] - I/O port base address
32 * [3] - analog output range, set by jumpers on hardware
33 * 0 for -10 to 10V bipolar
34 * 1 for 0V to 10V unipolar
37 #include <linux/module.h>
39 #include "../comedidev.h"
46 * Register-level programming information can be found in NI
47 * document 320379.pdf.
49 #define ATAO_DIO_REG 0x00
50 #define ATAO_CFG2_REG 0x02
51 #define ATAO_CFG2_CALLD_NOP (0 << 14)
52 #define ATAO_CFG2_CALLD(x) ((((x) >> 3) + 1) << 14)
53 #define ATAO_CFG2_FFRTEN (1 << 13)
54 #define ATAO_CFG2_DACS(x) (1 << (((x) / 2) + 8))
55 #define ATAO_CFG2_LDAC(x) (1 << (((x) / 2) + 3))
56 #define ATAO_CFG2_PROMEN (1 << 2)
57 #define ATAO_CFG2_SCLK (1 << 1)
58 #define ATAO_CFG2_SDATA (1 << 0)
59 #define ATAO_CFG3_REG 0x04
60 #define ATAO_CFG3_DMAMODE (1 << 6)
61 #define ATAO_CFG3_CLKOUT (1 << 5)
62 #define ATAO_CFG3_RCLKEN (1 << 4)
63 #define ATAO_CFG3_DOUTEN2 (1 << 3)
64 #define ATAO_CFG3_DOUTEN1 (1 << 2)
65 #define ATAO_CFG3_EN2_5V (1 << 1)
66 #define ATAO_CFG3_SCANEN (1 << 0)
67 #define ATAO_82C53_BASE 0x06
68 #define ATAO_CFG1_REG 0x0a
69 #define ATAO_CFG1_EXTINT2EN (1 << 15)
70 #define ATAO_CFG1_EXTINT1EN (1 << 14)
71 #define ATAO_CFG1_CNTINT2EN (1 << 13)
72 #define ATAO_CFG1_CNTINT1EN (1 << 12)
73 #define ATAO_CFG1_TCINTEN (1 << 11)
74 #define ATAO_CFG1_CNT1SRC (1 << 10)
75 #define ATAO_CFG1_CNT2SRC (1 << 9)
76 #define ATAO_CFG1_FIFOEN (1 << 8)
77 #define ATAO_CFG1_GRP2WR (1 << 7)
78 #define ATAO_CFG1_EXTUPDEN (1 << 6)
79 #define ATAO_CFG1_DMARQ (1 << 5)
80 #define ATAO_CFG1_DMAEN (1 << 4)
81 #define ATAO_CFG1_CH(x) (((x) & 0xf) << 0)
82 #define ATAO_STATUS_REG 0x0a
83 #define ATAO_STATUS_FH (1 << 6)
84 #define ATAO_STATUS_FE (1 << 5)
85 #define ATAO_STATUS_FF (1 << 4)
86 #define ATAO_STATUS_INT2 (1 << 3)
87 #define ATAO_STATUS_INT1 (1 << 2)
88 #define ATAO_STATUS_TCINT (1 << 1)
89 #define ATAO_STATUS_PROMOUT (1 << 0)
90 #define ATAO_FIFO_WRITE_REG 0x0c
91 #define ATAO_FIFO_CLEAR_REG 0x0c
92 #define ATAO_AO_REG(x) (0x0c + ((x) * 2))
94 /* registers with _2_ are accessed when GRP2WR is set in CFG1 */
95 #define ATAO_2_DMATCCLR_REG 0x00
96 #define ATAO_2_INT1CLR_REG 0x02
97 #define ATAO_2_INT2CLR_REG 0x04
98 #define ATAO_2_RTSISHFT_REG 0x06
99 #define ATAO_2_RTSISHFT_RSI (1 << 0)
100 #define ATAO_2_RTSISTRB_REG 0x07
107 static const struct atao_board atao_boards[] = {
117 struct atao_private {
121 /* Used for AO readback */
122 unsigned int ao_readback[10];
124 /* Used for caldac readback */
125 unsigned char caldac[21];
128 static void atao_select_reg_group(struct comedi_device *dev, int group)
130 struct atao_private *devpriv = dev->private;
133 devpriv->cfg1 |= ATAO_CFG1_GRP2WR;
135 devpriv->cfg1 &= ~ATAO_CFG1_GRP2WR;
136 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
139 static int atao_ao_insn_write(struct comedi_device *dev,
140 struct comedi_subdevice *s,
141 struct comedi_insn *insn,
144 struct atao_private *devpriv = dev->private;
145 unsigned int chan = CR_CHAN(insn->chanspec);
150 atao_select_reg_group(dev, 1);
152 for (i = 0; i < insn->n; i++) {
154 devpriv->ao_readback[chan] = val;
156 /* munge offset binary (unsigned) to two's complement */
157 val = comedi_offset_munge(s, val);
158 outw(val, dev->iobase + ATAO_AO_REG(chan));
162 atao_select_reg_group(dev, 0);
167 static int atao_ao_insn_read(struct comedi_device *dev,
168 struct comedi_subdevice *s,
169 struct comedi_insn *insn,
172 struct atao_private *devpriv = dev->private;
173 unsigned int chan = CR_CHAN(insn->chanspec);
176 for (i = 0; i < insn->n; i++)
177 data[i] = devpriv->ao_readback[chan];
182 static int atao_dio_insn_bits(struct comedi_device *dev,
183 struct comedi_subdevice *s,
184 struct comedi_insn *insn,
187 if (comedi_dio_update_state(s, data))
188 outw(s->state, dev->iobase + ATAO_DIO_REG);
190 data[1] = inw(dev->iobase + ATAO_DIO_REG);
195 static int atao_dio_insn_config(struct comedi_device *dev,
196 struct comedi_subdevice *s,
197 struct comedi_insn *insn,
200 struct atao_private *devpriv = dev->private;
201 unsigned int chan = CR_CHAN(insn->chanspec);
210 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
214 if (s->io_bits & 0x0f)
215 devpriv->cfg3 |= ATAO_CFG3_DOUTEN1;
217 devpriv->cfg3 &= ~ATAO_CFG3_DOUTEN1;
218 if (s->io_bits & 0xf0)
219 devpriv->cfg3 |= ATAO_CFG3_DOUTEN2;
221 devpriv->cfg3 &= ~ATAO_CFG3_DOUTEN2;
223 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3_REG);
229 * There are three DAC8800 TrimDACs on the board. These are 8-channel,
230 * 8-bit DACs that are used to calibrate the Analog Output channels.
231 * The factory default calibration values are stored in the EEPROM.
232 * The TrimDACs, and EEPROM addresses, are mapped as:
234 * Channel EEPROM Description
235 * ----------------- ------ -----------------------------------
236 * 0 - DAC0 Chan 0 0x30 AO Channel 0 Offset
237 * 1 - DAC0 Chan 1 0x31 AO Channel 0 Gain
238 * 2 - DAC0 Chan 2 0x32 AO Channel 1 Offset
239 * 3 - DAC0 Chan 3 0x33 AO Channel 1 Gain
240 * 4 - DAC0 Chan 4 0x34 AO Channel 2 Offset
241 * 5 - DAC0 Chan 5 0x35 AO Channel 2 Gain
242 * 6 - DAC0 Chan 6 0x36 AO Channel 3 Offset
243 * 7 - DAC0 Chan 7 0x37 AO Channel 3 Gain
244 * 8 - DAC1 Chan 0 0x38 AO Channel 4 Offset
245 * 9 - DAC1 Chan 1 0x39 AO Channel 4 Gain
246 * 10 - DAC1 Chan 2 0x3a AO Channel 5 Offset
247 * 11 - DAC1 Chan 3 0x3b AO Channel 5 Gain
248 * 12 - DAC1 Chan 4 0x3c 2.5V Offset
249 * 13 - DAC1 Chan 5 0x3d AO Channel 6 Offset (at-ao-10 only)
250 * 14 - DAC1 Chan 6 0x3e AO Channel 6 Gain (at-ao-10 only)
251 * 15 - DAC1 Chan 7 0x3f AO Channel 7 Offset (at-ao-10 only)
252 * 16 - DAC2 Chan 0 0x40 AO Channel 7 Gain (at-ao-10 only)
253 * 17 - DAC2 Chan 1 0x41 AO Channel 8 Offset (at-ao-10 only)
254 * 18 - DAC2 Chan 2 0x42 AO Channel 8 Gain (at-ao-10 only)
255 * 19 - DAC2 Chan 3 0x43 AO Channel 9 Offset (at-ao-10 only)
256 * 20 - DAC2 Chan 4 0x44 AO Channel 9 Gain (at-ao-10 only)
257 * DAC2 Chan 5 0x45 Reserved
258 * DAC2 Chan 6 0x46 Reserved
259 * DAC2 Chan 7 0x47 Reserved
261 static int atao_calib_insn_write(struct comedi_device *dev,
262 struct comedi_subdevice *s,
263 struct comedi_insn *insn,
266 struct atao_private *devpriv = dev->private;
267 unsigned int chan = CR_CHAN(insn->chanspec);
268 unsigned int bitstring;
275 devpriv->caldac[chan] = data[insn->n - 1] & s->maxdata;
277 /* write the channel and last data value to the caldac */
278 bitstring = ((chan & 0x7) << 8) | devpriv->caldac[chan];
280 /* clock the bitstring to the caldac; MSB -> LSB */
281 for (bit = 1 << 10; bit; bit >>= 1) {
282 val = (bit & bitstring) ? ATAO_CFG2_SDATA : 0;
284 outw(val, dev->iobase + ATAO_CFG2_REG);
285 outw(val | ATAO_CFG2_SCLK, dev->iobase + ATAO_CFG2_REG);
288 /* strobe the caldac to load the value */
289 outw(ATAO_CFG2_CALLD(chan), dev->iobase + ATAO_CFG2_REG);
290 outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG);
295 static int atao_calib_insn_read(struct comedi_device *dev,
296 struct comedi_subdevice *s,
297 struct comedi_insn *insn,
300 struct atao_private *devpriv = dev->private;
301 unsigned int chan = CR_CHAN(insn->chanspec);
304 for (i = 0; i < insn->n; i++)
305 data[i] = devpriv->caldac[chan];
310 static void atao_reset(struct comedi_device *dev)
312 struct atao_private *devpriv = dev->private;
314 /* This is the reset sequence described in the manual */
317 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
319 /* Put outputs of counter 1 and counter 2 in a high state */
320 i8254_load(dev->iobase + ATAO_82C53_BASE, 0,
321 0, 0x0003, I8254_MODE4 | I8254_BINARY);
322 i8254_set_mode(dev->iobase + ATAO_82C53_BASE, 0,
323 1, I8254_MODE4 | I8254_BINARY);
325 outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG);
328 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3_REG);
330 inw(dev->iobase + ATAO_FIFO_CLEAR_REG);
332 atao_select_reg_group(dev, 1);
333 outw(0, dev->iobase + ATAO_2_INT1CLR_REG);
334 outw(0, dev->iobase + ATAO_2_INT2CLR_REG);
335 outw(0, dev->iobase + ATAO_2_DMATCCLR_REG);
336 atao_select_reg_group(dev, 0);
339 static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it)
341 const struct atao_board *board = comedi_board(dev);
342 struct atao_private *devpriv;
343 struct comedi_subdevice *s;
346 ret = comedi_request_region(dev, it->options[0], 0x20);
350 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
354 ret = comedi_alloc_subdevices(dev, 4);
358 /* Analog Output subdevice */
359 s = &dev->subdevices[0];
360 s->type = COMEDI_SUBD_AO;
361 s->subdev_flags = SDF_WRITABLE;
362 s->n_chan = board->n_ao_chans;
364 s->range_table = it->options[3] ? &range_unipolar10 : &range_bipolar10;
365 s->insn_write = atao_ao_insn_write;
366 s->insn_read = atao_ao_insn_read;
368 /* Digital I/O subdevice */
369 s = &dev->subdevices[1];
370 s->type = COMEDI_SUBD_DIO;
371 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
374 s->range_table = &range_digital;
375 s->insn_bits = atao_dio_insn_bits;
376 s->insn_config = atao_dio_insn_config;
378 /* caldac subdevice */
379 s = &dev->subdevices[2];
380 s->type = COMEDI_SUBD_CALIB;
381 s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
382 s->n_chan = (board->n_ao_chans * 2) + 1;
384 s->insn_read = atao_calib_insn_read;
385 s->insn_write = atao_calib_insn_write;
387 /* EEPROM subdevice */
388 s = &dev->subdevices[3];
389 s->type = COMEDI_SUBD_UNUSED;
396 static struct comedi_driver ni_at_ao_driver = {
397 .driver_name = "ni_at_ao",
398 .module = THIS_MODULE,
399 .attach = atao_attach,
400 .detach = comedi_legacy_detach,
401 .board_name = &atao_boards[0].name,
402 .offset = sizeof(struct atao_board),
403 .num_names = ARRAY_SIZE(atao_boards),
405 module_comedi_driver(ni_at_ao_driver);
407 MODULE_AUTHOR("Comedi http://www.comedi.org");
408 MODULE_DESCRIPTION("Comedi driver for NI AT-AO-6/10 boards");
409 MODULE_LICENSE("GPL");