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 struct comedi_insn
* insn
, unsigned int * data
);
199 static int atao_ao_rinsn(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
200 struct comedi_insn
* insn
, unsigned int * data
);
201 static int atao_dio_insn_bits(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
202 struct comedi_insn
* insn
, unsigned int * data
);
203 static int atao_dio_insn_config(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
204 struct comedi_insn
* insn
, unsigned int * data
);
205 static int atao_calib_insn_read(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
206 struct comedi_insn
* insn
, unsigned int * data
);
207 static int atao_calib_insn_write(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
208 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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 struct 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
);