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>
40 #include "../comedidev.h"
45 #define ATAO_DIN 0x00 /* R 16 */
46 #define ATAO_DOUT 0x00 /* W 16 */
47 #define ATAO_CFG2 0x02 /* W 16 */
48 #define CALLD1 (1 << 15)
49 #define CALLD0 (1 << 14)
50 #define FFRTEN (1 << 13)
51 #define DAC2S8 (1 << 12)
52 #define DAC2S6 (1 << 11)
53 #define DAC2S4 (1 << 10)
54 #define DAC2S2 (1 << 9)
55 #define DAC2S0 (1 << 8)
56 #define LDAC8 (1 << 7)
57 #define LDAC6 (1 << 6)
58 #define LDAC4 (1 << 5)
59 #define LDAC2 (1 << 4)
60 #define LDAC0 (1 << 3)
61 #define PROMEN (1 << 2)
63 #define SDATA (1 << 0)
64 #define ATAO_CFG3 0x04 /* W 16 */
65 #define DMAMODE (1 << 6)
66 #define CLKOUT (1 << 5)
67 #define RCLKEN (1 << 4)
68 #define DOUTEN2 (1 << 3)
69 #define DOUTEN1 (1 << 2)
70 #define EN2_5V (1 << 1)
71 #define SCANEN (1 << 0)
72 #define ATAO_82C53_BASE 0x06 /* RW 8 */
73 #define ATAO_82C53_CNTR1 0x06 /* RW 8 */
74 #define ATAO_82C53_CNTR2 0x07 /* RW 8 */
75 #define ATAO_82C53_CNTR3 0x08 /* RW 8 */
76 #define ATAO_82C53_CNTRCMD 0x09 /* W 8 */
77 #define CNTRSEL1 (1 << 7)
78 #define CNTRSEL0 (1 << 6)
79 #define RWSEL1 (1 << 5)
80 #define RWSEL0 (1 << 4)
81 #define MODESEL2 (1 << 3)
82 #define MODESEL1 (1 << 2)
83 #define MODESEL0 (1 << 1)
84 #define BCDSEL (1 << 0)
85 /* read-back command */
86 #define COUNT (1 << 5)
87 #define STATUS (1 << 4)
88 #define CNTR3 (1 << 3)
89 #define CNTR2 (1 << 2)
90 #define CNTR1 (1 << 1)
93 #define _NULL (1 << 6)
96 #define MODE2 (1 << 3)
97 #define MODE1 (1 << 2)
98 #define MODE0 (1 << 1)
100 #define ATAO_CFG1 0x0a /* W 16 */
101 #define EXTINT2EN (1 << 15)
102 #define EXTINT1EN (1 << 14)
103 #define CNTINT2EN (1 << 13)
104 #define CNTINT1EN (1 << 12)
105 #define TCINTEN (1 << 11)
106 #define CNT1SRC (1 << 10)
107 #define CNT2SRC (1 << 9)
108 #define FIFOEN (1 << 8)
109 #define GRP2WR (1 << 7)
110 #define EXTUPDEN (1 << 6)
111 #define DMARQ (1 << 5)
112 #define DMAEN (1 << 4)
113 #define CH_mask (0xf << 0)
114 #define ATAO_STATUS 0x0a /* R 16 */
118 #define INT2 (1 << 3)
119 #define INT1 (1 << 2)
120 #define TCINT (1 << 1)
121 #define PROMOUT (1 << 0)
122 #define ATAO_FIFO_WRITE 0x0c /* W 16 */
123 #define ATAO_FIFO_CLEAR 0x0c /* R 16 */
124 #define ATAO_DACn(x) (0x0c + ((x) * 2)) /* W */
126 /* registers with _2_ are accessed when GRP2WR is set in CFG1 */
128 #define ATAO_2_DMATCCLR 0x00 /* W 16 */
129 #define ATAO_2_INT1CLR 0x02 /* W 16 */
130 #define ATAO_2_INT2CLR 0x04 /* W 16 */
131 #define ATAO_2_RTSISHFT 0x06 /* W 8 */
132 #define ATAO_RTSISHFT_RSI (1 << 0)
133 #define ATAO_2_RTSISTRB 0x07 /* W 8 */
136 * Board descriptions for two imaginary boards. Describing the
137 * boards in this way is optional, and completely driver-dependent.
138 * Some drivers use arrays such as this, other do not.
145 struct atao_private {
151 /* Used for AO readback */
152 unsigned int ao_readback[10];
155 static void atao_reset(struct comedi_device *dev)
157 struct atao_private *devpriv = dev->private;
159 /* This is the reset sequence described in the manual */
162 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
164 outb(RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
165 outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
166 outb(CNTRSEL0 | RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
169 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
172 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
174 inw(dev->iobase + ATAO_FIFO_CLEAR);
176 devpriv->cfg1 |= GRP2WR;
177 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
179 outw(0, dev->iobase + ATAO_2_INT1CLR);
180 outw(0, dev->iobase + ATAO_2_INT2CLR);
181 outw(0, dev->iobase + ATAO_2_DMATCCLR);
183 devpriv->cfg1 &= ~GRP2WR;
184 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
187 static int atao_ao_winsn(struct comedi_device *dev, struct comedi_subdevice *s,
188 struct comedi_insn *insn, unsigned int *data)
190 struct atao_private *devpriv = dev->private;
192 int chan = CR_CHAN(insn->chanspec);
195 for (i = 0; i < insn->n; i++) {
196 bits = data[i] - 0x800;
198 devpriv->cfg1 |= GRP2WR;
199 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
201 outw(bits, dev->iobase + ATAO_DACn(chan));
203 devpriv->cfg1 &= ~GRP2WR;
204 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
206 devpriv->ao_readback[chan] = data[i];
212 static int atao_ao_rinsn(struct comedi_device *dev, struct comedi_subdevice *s,
213 struct comedi_insn *insn, unsigned int *data)
215 struct atao_private *devpriv = dev->private;
217 int chan = CR_CHAN(insn->chanspec);
219 for (i = 0; i < insn->n; i++)
220 data[i] = devpriv->ao_readback[chan];
225 static int atao_dio_insn_bits(struct comedi_device *dev,
226 struct comedi_subdevice *s,
227 struct comedi_insn *insn,
230 if (comedi_dio_update_state(s, data))
231 outw(s->state, dev->iobase + ATAO_DOUT);
233 data[1] = inw(dev->iobase + ATAO_DIN);
238 static int atao_dio_insn_config(struct comedi_device *dev,
239 struct comedi_subdevice *s,
240 struct comedi_insn *insn,
243 struct atao_private *devpriv = dev->private;
244 unsigned int chan = CR_CHAN(insn->chanspec);
253 ret = comedi_dio_insn_config(dev, s, insn, data, mask);
257 if (s->io_bits & 0x0f)
258 devpriv->cfg3 |= DOUTEN1;
260 devpriv->cfg3 &= ~DOUTEN1;
261 if (s->io_bits & 0xf0)
262 devpriv->cfg3 |= DOUTEN2;
264 devpriv->cfg3 &= ~DOUTEN2;
266 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
272 * Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
273 * are 8-channel 8-bit DACs. These are most likely the calibration
274 * DACs. It is not explicitly stated in the manual how to access
275 * the caldacs, but we can guess.
277 static int atao_calib_insn_read(struct comedi_device *dev,
278 struct comedi_subdevice *s,
279 struct comedi_insn *insn, unsigned int *data)
282 for (i = 0; i < insn->n; i++)
283 data[i] = 0; /* XXX */
287 static int atao_calib_insn_write(struct comedi_device *dev,
288 struct comedi_subdevice *s,
289 struct comedi_insn *insn, unsigned int *data)
291 struct atao_private *devpriv = dev->private;
292 unsigned int bitstring, bit;
293 unsigned int chan = CR_CHAN(insn->chanspec);
295 bitstring = ((chan & 0x7) << 8) | (data[insn->n - 1] & 0xff);
297 for (bit = 1 << (11 - 1); bit; bit >>= 1) {
298 outw(devpriv->cfg2 | ((bit & bitstring) ? SDATA : 0),
299 dev->iobase + ATAO_CFG2);
300 outw(devpriv->cfg2 | SCLK | ((bit & bitstring) ? SDATA : 0),
301 dev->iobase + ATAO_CFG2);
303 /* strobe the appropriate caldac */
304 outw(devpriv->cfg2 | (((chan >> 3) + 1) << 14),
305 dev->iobase + ATAO_CFG2);
306 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
311 static int atao_attach(struct comedi_device *dev, struct comedi_devconfig *it)
313 const struct atao_board *board = comedi_board(dev);
314 struct atao_private *devpriv;
315 struct comedi_subdevice *s;
319 ao_unipolar = it->options[3];
321 ret = comedi_request_region(dev, it->options[0], 0x20);
325 devpriv = comedi_alloc_devpriv(dev, sizeof(*devpriv));
329 ret = comedi_alloc_subdevices(dev, 4);
333 s = &dev->subdevices[0];
334 /* analog output subdevice */
335 s->type = COMEDI_SUBD_AO;
336 s->subdev_flags = SDF_WRITABLE;
337 s->n_chan = board->n_ao_chans;
338 s->maxdata = (1 << 12) - 1;
340 s->range_table = &range_unipolar10;
342 s->range_table = &range_bipolar10;
343 s->insn_write = &atao_ao_winsn;
344 s->insn_read = &atao_ao_rinsn;
346 s = &dev->subdevices[1];
347 /* digital i/o subdevice */
348 s->type = COMEDI_SUBD_DIO;
349 s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
352 s->range_table = &range_digital;
353 s->insn_bits = atao_dio_insn_bits;
354 s->insn_config = atao_dio_insn_config;
356 s = &dev->subdevices[2];
357 /* caldac subdevice */
358 s->type = COMEDI_SUBD_CALIB;
359 s->subdev_flags = SDF_WRITABLE | SDF_INTERNAL;
362 s->insn_read = atao_calib_insn_read;
363 s->insn_write = atao_calib_insn_write;
365 s = &dev->subdevices[3];
366 /* eeprom subdevice */
367 /* s->type=COMEDI_SUBD_EEPROM; */
368 s->type = COMEDI_SUBD_UNUSED;
372 printk(KERN_INFO "\n");
377 static const struct atao_board atao_boards[] = {
387 static struct comedi_driver ni_at_ao_driver = {
388 .driver_name = "ni_at_ao",
389 .module = THIS_MODULE,
390 .attach = atao_attach,
391 .detach = comedi_legacy_detach,
392 .board_name = &atao_boards[0].name,
393 .offset = sizeof(struct atao_board),
394 .num_names = ARRAY_SIZE(atao_boards),
396 module_comedi_driver(ni_at_ao_driver);
398 MODULE_AUTHOR("Comedi http://www.comedi.org");
399 MODULE_DESCRIPTION("Comedi low-level driver");
400 MODULE_LICENSE("GPL");