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.
20 Description: National Instruments AT-AO-6/10
21 Devices: [National Instruments] AT-AO-6 (at-ao-6), AT-AO-10 (at-ao-10)
24 Updated: Sun Dec 26 12:26:28 EST 2004
26 Configuration options:
27 [0] - I/O port base address
30 [3] - analog output range, set by jumpers on hardware (0 for -10 to 10V
31 bipolar, 1 for 0V to 10V unipolar)
35 * Register-level programming information can be found in NI
36 * document 320379.pdf.
39 #include <linux/module.h>
41 #include "../comedidev.h"
48 #define ATAO_DIO_REG 0x00
49 #define ATAO_CFG2_REG 0x02
50 #define ATAO_CFG2_CALLD_NOP (0 << 14)
51 #define ATAO_CFG2_CALLD(x) ((((x) >> 3) + 1) << 14)
52 #define ATAO_CFG2_FFRTEN (1 << 13)
53 #define ATAO_CFG2_DACS(x) (1 << (((x) / 2) + 8))
54 #define ATAO_CFG2_LDAC(x) (1 << (((x) / 2) + 3))
55 #define ATAO_CFG2_PROMEN (1 << 2)
56 #define ATAO_CFG2_SCLK (1 << 1)
57 #define ATAO_CFG2_SDATA (1 << 0)
58 #define ATAO_CFG3_REG 0x04
59 #define ATAO_CFG3_DMAMODE (1 << 6)
60 #define ATAO_CFG3_CLKOUT (1 << 5)
61 #define ATAO_CFG3_RCLKEN (1 << 4)
62 #define ATAO_CFG3_DOUTEN2 (1 << 3)
63 #define ATAO_CFG3_DOUTEN1 (1 << 2)
64 #define ATAO_CFG3_EN2_5V (1 << 1)
65 #define ATAO_CFG3_SCANEN (1 << 0)
66 #define ATAO_82C53_BASE 0x06
67 #define ATAO_CFG1_REG 0x0a
68 #define ATAO_CFG1_EXTINT2EN (1 << 15)
69 #define ATAO_CFG1_EXTINT1EN (1 << 14)
70 #define ATAO_CFG1_CNTINT2EN (1 << 13)
71 #define ATAO_CFG1_CNTINT1EN (1 << 12)
72 #define ATAO_CFG1_TCINTEN (1 << 11)
73 #define ATAO_CFG1_CNT1SRC (1 << 10)
74 #define ATAO_CFG1_CNT2SRC (1 << 9)
75 #define ATAO_CFG1_FIFOEN (1 << 8)
76 #define ATAO_CFG1_GRP2WR (1 << 7)
77 #define ATAO_CFG1_EXTUPDEN (1 << 6)
78 #define ATAO_CFG1_DMARQ (1 << 5)
79 #define ATAO_CFG1_DMAEN (1 << 4)
80 #define ATAO_CFG1_CH(x) (((x) & 0xf) << 0)
81 #define ATAO_STATUS_REG 0x0a
82 #define ATAO_STATUS_FH (1 << 6)
83 #define ATAO_STATUS_FE (1 << 5)
84 #define ATAO_STATUS_FF (1 << 4)
85 #define ATAO_STATUS_INT2 (1 << 3)
86 #define ATAO_STATUS_INT1 (1 << 2)
87 #define ATAO_STATUS_TCINT (1 << 1)
88 #define ATAO_STATUS_PROMOUT (1 << 0)
89 #define ATAO_FIFO_WRITE_REG 0x0c
90 #define ATAO_FIFO_CLEAR_REG 0x0c
91 #define ATAO_AO_REG(x) (0x0c + ((x) * 2))
93 /* registers with _2_ are accessed when GRP2WR is set in CFG1 */
94 #define ATAO_2_DMATCCLR_REG 0x00
95 #define ATAO_2_INT1CLR_REG 0x02
96 #define ATAO_2_INT2CLR_REG 0x04
97 #define ATAO_2_RTSISHFT_REG 0x06
98 #define ATAO_2_RTSISHFT_RSI (1 << 0)
99 #define ATAO_2_RTSISTRB_REG 0x07
106 static const struct atao_board atao_boards[] = {
116 struct atao_private {
120 /* Used for AO readback */
121 unsigned int ao_readback[10];
123 /* Used for caldac readback */
124 unsigned char caldac[21];
127 static void atao_reset(struct comedi_device *dev)
129 struct atao_private *devpriv = dev->private;
131 /* This is the reset sequence described in the manual */
134 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
136 /* Put outputs of counter 1 and counter 2 in a high state */
137 i8254_load(dev->iobase + ATAO_82C53_BASE, 0,
138 0, 0x0003, I8254_MODE4 | I8254_BINARY);
139 i8254_set_mode(dev->iobase + ATAO_82C53_BASE, 0,
140 1, I8254_MODE4 | I8254_BINARY);
142 outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG);
145 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3_REG);
147 inw(dev->iobase + ATAO_FIFO_CLEAR_REG);
149 devpriv->cfg1 |= ATAO_CFG1_GRP2WR;
150 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
152 outw(0, dev->iobase + ATAO_2_INT1CLR_REG);
153 outw(0, dev->iobase + ATAO_2_INT2CLR_REG);
154 outw(0, dev->iobase + ATAO_2_DMATCCLR_REG);
156 devpriv->cfg1 &= ~ATAO_CFG1_GRP2WR;
157 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
160 static int atao_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
161 struct comedi_insn *insn, unsigned int *data)
163 struct atao_private *devpriv = dev->private;
165 int chan = CR_CHAN(insn->chanspec);
168 for (i = 0; i < insn->n; i++) {
169 bits = data[i] - 0x800;
171 devpriv->cfg1 |= ATAO_CFG1_GRP2WR;
172 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
174 outw(bits, dev->iobase + ATAO_AO_REG(chan));
176 devpriv->cfg1 &= ~ATAO_CFG1_GRP2WR;
177 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1_REG);
179 devpriv->ao_readback[chan] = data[i];
185 static int atao_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
186 struct comedi_insn *insn, unsigned int *data)
188 struct atao_private *devpriv = dev->private;
190 int chan = CR_CHAN(insn->chanspec);
192 for (i = 0; i < insn->n; i++)
193 data[i] = devpriv->ao_readback[chan];
198 static int atao_dio_insn_bits(struct comedi_device *dev,
199 struct comedi_subdevice *s,
200 struct comedi_insn *insn,
203 if (comedi_dio_update_state(s, data))
204 outw(s->state, dev->iobase + ATAO_DIO_REG);
206 data[1] = inw(dev->iobase + ATAO_DIO_REG);
211 static int atao_dio_insn_config(struct comedi_device *dev,
212 struct comedi_subdevice *s,
213 struct comedi_insn *insn,
216 struct atao_private *devpriv = dev->private;
217 unsigned int chan = CR_CHAN(insn->chanspec);
226 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
230 if (s->io_bits & 0x0f)
231 devpriv->cfg3 |= ATAO_CFG3_DOUTEN1;
233 devpriv->cfg3 &= ~ATAO_CFG3_DOUTEN1;
234 if (s->io_bits & 0xf0)
235 devpriv->cfg3 |= ATAO_CFG3_DOUTEN2;
237 devpriv->cfg3 &= ~ATAO_CFG3_DOUTEN2;
239 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3_REG);
245 * There are three DAC8800 TrimDACs on the board. These are 8-channel,
246 * 8-bit DACs that are used to calibrate the Analog Output channels.
247 * The factory default calibration values are stored in the EEPROM.
248 * The TrimDACs, and EEPROM addresses, are mapped as:
250 * Channel EEPROM Description
251 * ----------------- ------ -----------------------------------
252 * 0 - DAC0 Chan 0 0x30 AO Channel 0 Offset
253 * 1 - DAC0 Chan 1 0x31 AO Channel 0 Gain
254 * 2 - DAC0 Chan 2 0x32 AO Channel 1 Offset
255 * 3 - DAC0 Chan 3 0x33 AO Channel 1 Gain
256 * 4 - DAC0 Chan 4 0x34 AO Channel 2 Offset
257 * 5 - DAC0 Chan 5 0x35 AO Channel 2 Gain
258 * 6 - DAC0 Chan 6 0x36 AO Channel 3 Offset
259 * 7 - DAC0 Chan 7 0x37 AO Channel 3 Gain
260 * 8 - DAC1 Chan 0 0x38 AO Channel 4 Offset
261 * 9 - DAC1 Chan 1 0x39 AO Channel 4 Gain
262 * 10 - DAC1 Chan 2 0x3a AO Channel 5 Offset
263 * 11 - DAC1 Chan 3 0x3b AO Channel 5 Gain
264 * 12 - DAC1 Chan 4 0x3c 2.5V Offset
265 * 13 - DAC1 Chan 5 0x3d AO Channel 6 Offset (at-ao-10 only)
266 * 14 - DAC1 Chan 6 0x3e AO Channel 6 Gain (at-ao-10 only)
267 * 15 - DAC1 Chan 7 0x3f AO Channel 7 Offset (at-ao-10 only)
268 * 16 - DAC2 Chan 0 0x40 AO Channel 7 Gain (at-ao-10 only)
269 * 17 - DAC2 Chan 1 0x41 AO Channel 8 Offset (at-ao-10 only)
270 * 18 - DAC2 Chan 2 0x42 AO Channel 8 Gain (at-ao-10 only)
271 * 19 - DAC2 Chan 3 0x43 AO Channel 9 Offset (at-ao-10 only)
272 * 20 - DAC2 Chan 4 0x44 AO Channel 9 Gain (at-ao-10 only)
273 * DAC2 Chan 5 0x45 Reserved
274 * DAC2 Chan 6 0x46 Reserved
275 * DAC2 Chan 7 0x47 Reserved
277 static int atao_calib_insn_write(struct comedi_device *dev,
278 struct comedi_subdevice *s,
279 struct comedi_insn *insn,
282 struct atao_private *devpriv = dev->private;
283 unsigned int chan = CR_CHAN(insn->chanspec);
284 unsigned int bitstring;
291 devpriv->caldac[chan] = data[insn->n - 1] & s->maxdata;
293 /* write the channel and last data value to the caldac */
294 bitstring = ((chan & 0x7) << 8) | devpriv->caldac[chan];
296 /* clock the bitstring to the caldac; MSB -> LSB */
297 for (bit = 1 << 10; bit; bit >>= 1) {
298 val = (bit & bitstring) ? ATAO_CFG2_SDATA : 0;
300 outw(val, dev->iobase + ATAO_CFG2_REG);
301 outw(val | ATAO_CFG2_SCLK, dev->iobase + ATAO_CFG2_REG);
304 /* strobe the caldac to load the value */
305 outw(ATAO_CFG2_CALLD(chan), dev->iobase + ATAO_CFG2_REG);
306 outw(ATAO_CFG2_CALLD_NOP, dev->iobase + ATAO_CFG2_REG);
311 static int atao_calib_insn_read(struct comedi_device *dev,
312 struct comedi_subdevice *s,
313 struct comedi_insn *insn,
316 struct atao_private *devpriv = dev->private;
317 unsigned int chan = CR_CHAN(insn->chanspec);
320 for (i = 0; i < insn->n; i++)
321 data[i] = devpriv->caldac[chan];
326 static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it)
328 const struct atao_board *board = comedi_board(dev);
329 struct atao_private *devpriv;
330 struct comedi_subdevice *s;
334 ao_unipolar = it->options[3];
336 ret = comedi_request_region(dev, it->options[0], 0x20);
340 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
344 ret = comedi_alloc_subdevices(dev, 4);
348 s = &dev->subdevices[0];
349 /* analog output subdevice */
350 s->type = COMEDI_SUBD_AO;
351 s->subdev_flags = SDF_WRITABLE;
352 s->n_chan = board->n_ao_chans;
353 s->maxdata = (1 << 12) - 1;
355 s->range_table = &range_unipolar10;
357 s->range_table = &range_bipolar10;
358 s->insn_write = &atao_ao_winsn;
359 s->insn_read = &atao_ao_rinsn;
361 s = &dev->subdevices[1];
362 /* digital i/o subdevice */
363 s->type = COMEDI_SUBD_DIO;
364 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
367 s->range_table = &range_digital;
368 s->insn_bits = atao_dio_insn_bits;
369 s->insn_config = atao_dio_insn_config;
371 /* caldac subdevice */
372 s = &dev->subdevices[2];
373 s->type = COMEDI_SUBD_CALIB;
374 s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
375 s->n_chan = (board->n_ao_chans * 2) + 1;
377 s->insn_read = atao_calib_insn_read;
378 s->insn_write = atao_calib_insn_write;
380 s = &dev->subdevices[3];
381 /* eeprom subdevice */
382 /* s->type=COMEDI_SUBD_EEPROM; */
383 s->type = COMEDI_SUBD_UNUSED;
387 printk(KERN_INFO "\n");
392 static struct comedi_driver ni_at_ao_driver = {
393 .driver_name = "ni_at_ao",
394 .module = THIS_MODULE,
395 .attach = atao_attach,
396 .detach = comedi_legacy_detach,
397 .board_name = &atao_boards[0].name,
398 .offset = sizeof(struct atao_board),
399 .num_names = ARRAY_SIZE(atao_boards),
401 module_comedi_driver(ni_at_ao_driver);
403 MODULE_AUTHOR("Comedi http://www.comedi.org");
404 MODULE_DESCRIPTION("Comedi low-level driver");
405 MODULE_LICENSE("GPL");