2 comedi/drivers/rti800.c
3 Hardware driver for Analog Devices RTI-800/815 board
5 COMEDI - Linux Control and Measurement Device Interface
6 Copyright (C) 1998 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: Analog Devices RTI-800/815
28 Updated: Fri, 05 Sep 2008 14:50:44 +0100
29 Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)
31 Configuration options:
32 [0] - I/O port base address
36 1 = pseudodifferential (common)
51 [7] - DAC 1 range (same as DAC 0)
52 [8] - DAC 1 encoding (same as DAC 0)
55 #include <linux/interrupt.h>
56 #include "../comedidev.h"
58 #include <linux/ioport.h>
60 #define RTI800_SIZE 16
63 #define RTI800_MUXGAIN 1
64 #define RTI800_CONVERT 2
65 #define RTI800_ADCLO 3
66 #define RTI800_ADCHI 4
67 #define RTI800_DAC0LO 5
68 #define RTI800_DAC0HI 6
69 #define RTI800_DAC1LO 7
70 #define RTI800_DAC1HI 8
71 #define RTI800_CLRFLAGS 9
74 #define RTI800_9513A_DATA 12
75 #define RTI800_9513A_CNTRL 13
76 #define RTI800_9513A_STATUS 13
79 * flags for CSR register
82 #define RTI800_BUSY 0x80
83 #define RTI800_DONE 0x40
84 #define RTI800_OVERRUN 0x20
85 #define RTI800_TCR 0x10
86 #define RTI800_DMA_ENAB 0x08
87 #define RTI800_INTR_TC 0x04
88 #define RTI800_INTR_EC 0x02
89 #define RTI800_INTR_OVRN 0x01
91 #define Am9513_8BITBUS
93 #define Am9513_output_control(a) outb(a, dev->iobase+RTI800_9513A_CNTRL)
94 #define Am9513_output_data(a) outb(a, dev->iobase+RTI800_9513A_DATA)
95 #define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA)
96 #define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS)
100 static const struct comedi_lrange range_rti800_ai_10_bipolar
= { 4, {
112 static const struct comedi_lrange range_rti800_ai_5_bipolar
= { 4, {
124 static const struct comedi_lrange range_rti800_ai_unipolar
= { 4, {
135 struct rti800_board
{
141 static const struct rti800_board boardtypes
[] = {
146 #define this_board ((const struct rti800_board *)dev->board_ptr)
148 static int rti800_attach(struct comedi_device
*dev
,
149 struct comedi_devconfig
*it
);
150 static int rti800_detach(struct comedi_device
*dev
);
151 static struct comedi_driver driver_rti800
= {
152 .driver_name
= "rti800",
153 .module
= THIS_MODULE
,
154 .attach
= rti800_attach
,
155 .detach
= rti800_detach
,
156 .num_names
= ARRAY_SIZE(boardtypes
),
157 .board_name
= &boardtypes
[0].name
,
158 .offset
= sizeof(struct rti800_board
),
161 static int __init
driver_rti800_init_module(void)
163 return comedi_driver_register(&driver_rti800
);
166 static void __exit
driver_rti800_cleanup_module(void)
168 comedi_driver_unregister(&driver_rti800
);
171 module_init(driver_rti800_init_module
);
172 module_exit(driver_rti800_cleanup_module
);
174 static irqreturn_t
rti800_interrupt(int irq
, void *dev
);
176 struct rti800_private
{
178 adc_diff
, adc_pseudodiff
, adc_singleended
181 adc_bipolar10
, adc_bipolar5
, adc_unipolar10
184 adc_2comp
, adc_straight
187 dac_bipolar10
, dac_unipolar10
188 } dac0_range
, dac1_range
;
190 dac_2comp
, dac_straight
191 } dac0_coding
, dac1_coding
;
192 const struct comedi_lrange
*ao_range_type_list
[2];
193 unsigned int ao_readback
[2];
197 #define devpriv ((struct rti800_private *)dev->private)
199 #define RTI800_TIMEOUT 100
201 static irqreturn_t
rti800_interrupt(int irq
, void *dev
)
206 /* settling delay times in usec for different gains */
207 static const int gaindelay
[] = { 10, 20, 40, 80 };
209 static int rti800_ai_insn_read(struct comedi_device
*dev
,
210 struct comedi_subdevice
*s
,
211 struct comedi_insn
*insn
, unsigned int *data
)
215 int chan
= CR_CHAN(insn
->chanspec
);
216 unsigned gain
= CR_RANGE(insn
->chanspec
);
217 unsigned muxgain_bits
;
219 inb(dev
->iobase
+ RTI800_ADCHI
);
220 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
222 muxgain_bits
= chan
| (gain
<< 5);
223 if (muxgain_bits
!= devpriv
->muxgain_bits
) {
224 devpriv
->muxgain_bits
= muxgain_bits
;
225 outb(devpriv
->muxgain_bits
, dev
->iobase
+ RTI800_MUXGAIN
);
226 /* without a delay here, the RTI_OVERRUN bit
227 * gets set, and you will have an error. */
229 BUG_ON(gain
>= ARRAY_SIZE(gaindelay
));
230 udelay(gaindelay
[gain
]);
234 for (i
= 0; i
< insn
->n
; i
++) {
235 outb(0, dev
->iobase
+ RTI800_CONVERT
);
236 for (t
= RTI800_TIMEOUT
; t
; t
--) {
237 status
= inb(dev
->iobase
+ RTI800_CSR
);
238 if (status
& RTI800_OVERRUN
) {
239 printk(KERN_WARNING
"rti800: a/d overrun\n");
240 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
243 if (status
& RTI800_DONE
)
248 printk(KERN_WARNING
"rti800: timeout\n");
251 data
[i
] = inb(dev
->iobase
+ RTI800_ADCLO
);
252 data
[i
] |= (0xf & inb(dev
->iobase
+ RTI800_ADCHI
)) << 8;
254 if (devpriv
->adc_coding
== adc_2comp
)
261 static int rti800_ao_insn_read(struct comedi_device
*dev
,
262 struct comedi_subdevice
*s
,
263 struct comedi_insn
*insn
, unsigned int *data
)
266 int chan
= CR_CHAN(insn
->chanspec
);
268 for (i
= 0; i
< insn
->n
; i
++)
269 data
[i
] = devpriv
->ao_readback
[chan
];
274 static int rti800_ao_insn_write(struct comedi_device
*dev
,
275 struct comedi_subdevice
*s
,
276 struct comedi_insn
*insn
, unsigned int *data
)
278 int chan
= CR_CHAN(insn
->chanspec
);
282 for (i
= 0; i
< insn
->n
; i
++) {
283 devpriv
->ao_readback
[chan
] = d
= data
[i
];
284 if (devpriv
->dac0_coding
== dac_2comp
)
288 dev
->iobase
+ (chan
? RTI800_DAC1LO
: RTI800_DAC0LO
));
290 dev
->iobase
+ (chan
? RTI800_DAC1HI
: RTI800_DAC0HI
));
295 static int rti800_di_insn_bits(struct comedi_device
*dev
,
296 struct comedi_subdevice
*s
,
297 struct comedi_insn
*insn
, unsigned int *data
)
301 data
[1] = inb(dev
->iobase
+ RTI800_DI
);
305 static int rti800_do_insn_bits(struct comedi_device
*dev
,
306 struct comedi_subdevice
*s
,
307 struct comedi_insn
*insn
, unsigned int *data
)
313 s
->state
&= ~data
[0];
314 s
->state
|= data
[0] & data
[1];
315 /* Outputs are inverted... */
316 outb(s
->state
^ 0xff, dev
->iobase
+ RTI800_DO
);
325 options[0] - I/O port
328 0=differential, 1=pseudodiff, 2=single
329 options[3] - a/d range
330 0=bipolar10, 1=bipolar5, 2=unipolar10
331 options[4] - a/d coding
332 0=2's comp, 1=straight binary
333 options[5] - dac0 range
334 0=bipolar10, 1=unipolar10
335 options[6] - dac0 coding
336 0=2's comp, 1=straight binary
337 options[7] - dac1 range
338 options[8] - dac1 coding
341 static int rti800_attach(struct comedi_device
*dev
, struct comedi_devconfig
*it
)
344 unsigned long iobase
;
346 struct comedi_subdevice
*s
;
348 iobase
= it
->options
[0];
349 printk(KERN_INFO
"comedi%d: rti800: 0x%04lx\n", dev
->minor
, iobase
);
350 if (!request_region(iobase
, RTI800_SIZE
, "rti800")) {
351 printk(KERN_WARNING
"I/O port conflict\n");
354 dev
->iobase
= iobase
;
357 printk(KERN_DEBUG
"fingerprint=%x,%x,%x,%x,%x ",
358 inb(dev
->iobase
+ 0),
359 inb(dev
->iobase
+ 1),
360 inb(dev
->iobase
+ 2),
361 inb(dev
->iobase
+ 3), inb(dev
->iobase
+ 4));
364 outb(0, dev
->iobase
+ RTI800_CSR
);
365 inb(dev
->iobase
+ RTI800_ADCHI
);
366 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
368 irq
= it
->options
[1];
370 printk(KERN_INFO
"( irq = %u )\n", irq
);
371 ret
= request_irq(irq
, rti800_interrupt
, 0, "rti800", dev
);
373 printk(KERN_WARNING
" Failed to allocate IRQ\n");
378 printk(KERN_INFO
"( no irq )\n");
381 dev
->board_name
= this_board
->name
;
383 ret
= alloc_subdevices(dev
, 4);
387 ret
= alloc_private(dev
, sizeof(struct rti800_private
));
391 devpriv
->adc_mux
= it
->options
[2];
392 devpriv
->adc_range
= it
->options
[3];
393 devpriv
->adc_coding
= it
->options
[4];
394 devpriv
->dac0_range
= it
->options
[5];
395 devpriv
->dac0_coding
= it
->options
[6];
396 devpriv
->dac1_range
= it
->options
[7];
397 devpriv
->dac1_coding
= it
->options
[8];
398 devpriv
->muxgain_bits
= -1;
400 s
= dev
->subdevices
+ 0;
402 s
->type
= COMEDI_SUBD_AI
;
403 s
->subdev_flags
= SDF_READABLE
| SDF_GROUND
;
404 s
->n_chan
= (devpriv
->adc_mux
? 16 : 8);
405 s
->insn_read
= rti800_ai_insn_read
;
407 switch (devpriv
->adc_range
) {
409 s
->range_table
= &range_rti800_ai_10_bipolar
;
412 s
->range_table
= &range_rti800_ai_5_bipolar
;
415 s
->range_table
= &range_rti800_ai_unipolar
;
420 if (this_board
->has_ao
) {
421 /* ao subdevice (only on rti815) */
422 s
->type
= COMEDI_SUBD_AO
;
423 s
->subdev_flags
= SDF_WRITABLE
;
425 s
->insn_read
= rti800_ao_insn_read
;
426 s
->insn_write
= rti800_ao_insn_write
;
428 s
->range_table_list
= devpriv
->ao_range_type_list
;
429 switch (devpriv
->dac0_range
) {
431 devpriv
->ao_range_type_list
[0] = &range_bipolar10
;
434 devpriv
->ao_range_type_list
[0] = &range_unipolar10
;
437 switch (devpriv
->dac1_range
) {
439 devpriv
->ao_range_type_list
[1] = &range_bipolar10
;
442 devpriv
->ao_range_type_list
[1] = &range_unipolar10
;
446 s
->type
= COMEDI_SUBD_UNUSED
;
451 s
->type
= COMEDI_SUBD_DI
;
452 s
->subdev_flags
= SDF_READABLE
;
454 s
->insn_bits
= rti800_di_insn_bits
;
456 s
->range_table
= &range_digital
;
460 s
->type
= COMEDI_SUBD_DO
;
461 s
->subdev_flags
= SDF_WRITABLE
;
463 s
->insn_bits
= rti800_do_insn_bits
;
465 s
->range_table
= &range_digital
;
467 /* don't yet know how to deal with counter/timers */
471 s
->type
= COMEDI_SUBD_TIMER
;
477 static int rti800_detach(struct comedi_device
*dev
)
479 printk(KERN_INFO
"comedi%d: rti800: remove\n", dev
->minor
);
482 release_region(dev
->iobase
, RTI800_SIZE
);
485 free_irq(dev
->irq
, dev
);
490 MODULE_AUTHOR("Comedi http://www.comedi.org");
491 MODULE_DESCRIPTION("Comedi low-level driver");
492 MODULE_LICENSE("GPL");