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 <linux/comedidev.h>
45 #include <linux/ioport.h>
49 /* registers with _2_ are accessed when GRP2WR is set in CFG1 */
51 #define ATAO_SIZE 0x20
53 #define ATAO_2_DMATCCLR 0x00 /* W 16 */
54 #define ATAO_DIN 0x00 /* R 16 */
55 #define ATAO_DOUT 0x00 /* W 16 */
57 #define ATAO_CFG2 0x02 /* W 16 */
75 #define ATAO_2_INT1CLR 0x02 /* W 16 */
77 #define ATAO_CFG3 0x04 /* W 16 */
78 #define DMAMODE 0x0040
81 #define DOUTEN2 0x0008
82 #define DOUTEN1 0x0004
86 #define ATAO_2_INT2CLR 0x04 /* W 16 */
88 #define ATAO_82C53_BASE 0x06 /* RW 8 */
90 #define ATAO_82C53_CNTR1 0x06 /* RW 8 */
91 #define ATAO_82C53_CNTR2 0x07 /* RW 8 */
92 #define ATAO_82C53_CNTR3 0x08 /* RW 8 */
93 #define ATAO_82C53_CNTRCMD 0x09 /* W 8 */
100 #define MODESEL0 0x02
102 /* read-back command */
118 #define ATAO_2_RTSISHFT 0x06 /* W 8 */
121 #define ATAO_2_RTSISTRB 0x07 /* W 8 */
123 #define ATAO_CFG1 0x0a /* W 16 */
124 #define EXTINT2EN 0x8000
125 #define EXTINT1EN 0x4000
126 #define CNTINT2EN 0x2000
127 #define CNTINT1EN 0x1000
128 #define TCINTEN 0x0800
129 #define CNT1SRC 0x0400
130 #define CNT2SRC 0x0200
131 #define FIFOEN 0x0100
132 #define GRP2WR 0x0080
133 #define EXTUPDEN 0x0040
136 #define CH_mask 0x000f
137 #define ATAO_STATUS 0x0a /* R 16 */
144 #define PROMOUT 0x0001
146 #define ATAO_FIFO_WRITE 0x0c /* W 16 */
147 #define ATAO_FIFO_CLEAR 0x0c /* R 16 */
148 #define ATAO_DACn(x) (0x0c + 2*(x)) /* W */
151 * Board descriptions for two imaginary boards. Describing the
152 * boards in this way is optional, and completely driver-dependent.
153 * Some drivers use arrays such as this, other do not.
155 typedef struct atao_board_struct{
159 static atao_board atao_boards[] = {
169 #define thisboard ((atao_board *)dev->board_ptr)
176 /* Used for AO readback */
177 lsampl_t ao_readback[10];
179 #define devpriv ((atao_private *)dev->private)
181 static int atao_attach(comedi_device *dev,comedi_devconfig *it);
182 static int atao_detach(comedi_device *dev);
183 static comedi_driver driver_atao={
184 driver_name: "ni_at_ao",
188 board_name: (const char**)atao_boards,
189 offset: sizeof(atao_board),
190 num_names: sizeof(atao_boards) / sizeof(atao_board),
192 COMEDI_INITCLEANUP(driver_atao);
194 static void atao_reset(comedi_device *dev);
196 static int atao_ao_winsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
197 static int atao_ao_rinsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data);
198 static int atao_dio_insn_bits(comedi_device *dev,comedi_subdevice *s,
199 comedi_insn *insn,lsampl_t *data);
200 static int atao_dio_insn_config(comedi_device *dev,comedi_subdevice *s,
201 comedi_insn *insn,lsampl_t *data);
202 static int atao_calib_insn_read(comedi_device *dev,comedi_subdevice *s,
203 comedi_insn *insn,lsampl_t *data);
204 static int atao_calib_insn_write(comedi_device *dev,comedi_subdevice *s,
205 comedi_insn *insn,lsampl_t *data);
207 static int atao_attach(comedi_device *dev,comedi_devconfig *it)
210 unsigned long iobase;
213 iobase = it->options[0];
214 if(iobase==0)iobase = 0x1c0;
215 ao_unipolar = it->options[3];
217 printk("comedi%d: ni_at_ao: 0x%04lx",dev->minor,iobase);
219 if(!request_region(iobase, ATAO_SIZE, "ni_at_ao")){
220 printk(" I/O port conflict\n");
223 dev->iobase = iobase;
225 //dev->board_ptr = atao_probe(dev);
227 dev->board_name = thisboard->name;
229 if(alloc_private(dev,sizeof(atao_private))<0)
232 if(alloc_subdevices(dev, 4)<0)
236 /* analog output subdevice */
237 s->type=COMEDI_SUBD_AO;
238 s->subdev_flags=SDF_WRITABLE;
239 s->n_chan=thisboard->n_ao_chans;
240 s->maxdata=(1<<12)-1;
242 s->range_table=&range_unipolar10;
244 s->range_table=&range_bipolar10;
245 s->insn_write = &atao_ao_winsn;
246 s->insn_read = &atao_ao_rinsn;
249 /* digital i/o subdevice */
250 s->type=COMEDI_SUBD_DIO;
251 s->subdev_flags=SDF_READABLE|SDF_WRITABLE;
254 s->range_table=&range_digital;
255 s->insn_bits = atao_dio_insn_bits;
256 s->insn_config = atao_dio_insn_config;
259 /* caldac subdevice */
260 s->type=COMEDI_SUBD_CALIB;
261 s->subdev_flags = SDF_WRITABLE|SDF_INTERNAL;
264 s->insn_read = atao_calib_insn_read;
265 s->insn_write = atao_calib_insn_write;
268 /* eeprom subdevice */
269 //s->type=COMEDI_SUBD_EEPROM;
270 s->type=COMEDI_SUBD_UNUSED;
280 static int atao_detach(comedi_device *dev)
282 printk("comedi%d: atao: remove\n",dev->minor);
285 release_region(dev->iobase, ATAO_SIZE);
291 static void atao_reset(comedi_device *dev)
293 /* This is the reset sequence described in the manual */
296 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
298 outb(RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
299 outb(0x03, dev->iobase + ATAO_82C53_CNTR1);
300 outb(CNTRSEL0 | RWSEL0 | MODESEL2, dev->iobase + ATAO_82C53_CNTRCMD);
303 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);
306 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
308 inw(dev->iobase + ATAO_FIFO_CLEAR);
310 devpriv->cfg1 |= GRP2WR;
311 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
313 outw(0, dev->iobase + ATAO_2_INT1CLR);
314 outw(0, dev->iobase + ATAO_2_INT2CLR);
315 outw(0, dev->iobase + ATAO_2_DMATCCLR);
317 devpriv->cfg1 &= ~GRP2WR;
318 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
322 static int atao_ao_winsn(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
325 int chan = CR_CHAN(insn->chanspec);
328 for(i=0;i<insn->n;i++){
329 bits = data[i] - 0x800;
332 devpriv->cfg1 |= GRP2WR;
333 outw(devpriv->cfg1, dev->iobase + ATAO_CFG1);
335 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(comedi_device *dev,comedi_subdevice *s,comedi_insn *insn,lsampl_t *data)
350 int chan = CR_CHAN(insn->chanspec);
352 for(i=0;i<insn->n;i++)
353 data[i] = devpriv->ao_readback[chan];
358 static int atao_dio_insn_bits(comedi_device *dev,comedi_subdevice *s,
359 comedi_insn *insn,lsampl_t *data)
361 if(insn->n!=2)return -EINVAL;
364 s->state &= ~data[0];
365 s->state |= data[0]&data[1];
366 outw(s->state,dev->iobase + ATAO_DOUT);
369 data[1]=inw(dev->iobase + ATAO_DIN);
374 static int atao_dio_insn_config(comedi_device *dev,comedi_subdevice *s,
375 comedi_insn *insn,lsampl_t *data)
377 int chan=CR_CHAN(insn->chanspec);
378 unsigned int mask, bit;
380 /* The input or output configuration of each digital line is
381 * configured by a special insn_config instruction. chanspec
382 * contains the channel to be changed, and data[0] contains the
383 * value COMEDI_INPUT or COMEDI_OUTPUT. */
385 mask = (chan < 4) ? 0x0f : 0xf0;
386 bit = (chan < 4) ? DOUTEN1 : DOUTEN2;
390 case INSN_CONFIG_DIO_OUTPUT:
392 devpriv->cfg3 |= bit;
394 case INSN_CONFIG_DIO_INPUT:
396 devpriv->cfg3 &= ~bit;
398 case INSN_CONFIG_DIO_QUERY:
399 data[1] = (s->io_bits & (1 << chan)) ? COMEDI_OUTPUT : COMEDI_INPUT;
407 outw(devpriv->cfg3, dev->iobase + ATAO_CFG3);
414 * Figure 2-1 in the manual shows 3 chips labeled DAC8800, which
415 * are 8-channel 8-bit DACs. These are most likely the calibration
416 * DACs. It is not explicitly stated in the manual how to access
417 * the caldacs, but we can guess.
419 static int atao_calib_insn_read(comedi_device *dev,comedi_subdevice *s,
420 comedi_insn *insn,lsampl_t *data)
423 for(i=0;i<insn->n;i++){
429 static int atao_calib_insn_write(comedi_device *dev,comedi_subdevice *s,
430 comedi_insn *insn,lsampl_t *data)
432 unsigned int bitstring, bit;
433 unsigned int chan = CR_CHAN(insn->chanspec);
435 bitstring = ((chan&0x7)<<8)|(data[insn->n-1]&0xff);
437 for(bit=1<<(11-1);bit;bit>>=1){
438 outw(devpriv->cfg2 | ((bit&bitstring)?SDATA:0), dev->iobase + ATAO_CFG2);
439 outw(devpriv->cfg2 | SCLK | ((bit&bitstring)?SDATA:0), dev->iobase + ATAO_CFG2);
441 /* strobe the appropriate caldac */
442 outw(devpriv->cfg2 | (((chan>>3) + 1)<<14), dev->iobase + ATAO_CFG2);
443 outw(devpriv->cfg2, dev->iobase + ATAO_CFG2);