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 "../comedidev.h"
57 #include <linux/ioport.h>
59 #define RTI800_SIZE 16
62 #define RTI800_MUXGAIN 1
63 #define RTI800_CONVERT 2
64 #define RTI800_ADCLO 3
65 #define RTI800_ADCHI 4
66 #define RTI800_DAC0LO 5
67 #define RTI800_DAC0HI 6
68 #define RTI800_DAC1LO 7
69 #define RTI800_DAC1HI 8
70 #define RTI800_CLRFLAGS 9
73 #define RTI800_9513A_DATA 12
74 #define RTI800_9513A_CNTRL 13
75 #define RTI800_9513A_STATUS 13
78 * flags for CSR register
81 #define RTI800_BUSY 0x80
82 #define RTI800_DONE 0x40
83 #define RTI800_OVERRUN 0x20
84 #define RTI800_TCR 0x10
85 #define RTI800_DMA_ENAB 0x08
86 #define RTI800_INTR_TC 0x04
87 #define RTI800_INTR_EC 0x02
88 #define RTI800_INTR_OVRN 0x01
90 #define Am9513_8BITBUS
92 #define Am9513_output_control(a) outb(a,dev->iobase+RTI800_9513A_CNTRL)
93 #define Am9513_output_data(a) outb(a,dev->iobase+RTI800_9513A_DATA)
94 #define Am9513_input_data() inb(dev->iobase+RTI800_9513A_DATA)
95 #define Am9513_input_status() inb(dev->iobase+RTI800_9513A_STATUS)
99 static const struct comedi_lrange range_rti800_ai_10_bipolar
= { 4, {
106 static const struct comedi_lrange range_rti800_ai_5_bipolar
= { 4, {
113 static const struct comedi_lrange range_rti800_ai_unipolar
= { 4, {
125 static const boardtype boardtypes
[] = {
130 #define this_board ((const boardtype *)dev->board_ptr)
132 static int rti800_attach(struct comedi_device
* dev
, comedi_devconfig
* it
);
133 static int rti800_detach(struct comedi_device
* dev
);
134 static struct comedi_driver driver_rti800
= {
135 driver_name
:"rti800",
137 attach
:rti800_attach
,
138 detach
:rti800_detach
,
139 num_names
:sizeof(boardtypes
) / sizeof(boardtype
),
140 board_name
:&boardtypes
[0].name
,
141 offset
:sizeof(boardtype
),
144 COMEDI_INITCLEANUP(driver_rti800
);
146 static irqreturn_t
rti800_interrupt(int irq
, void *dev PT_REGS_ARG
);
150 adc_diff
, adc_pseudodiff
, adc_singleended
153 adc_bipolar10
, adc_bipolar5
, adc_unipolar10
156 adc_2comp
, adc_straight
159 dac_bipolar10
, dac_unipolar10
160 } dac0_range
, dac1_range
;
162 dac_2comp
, dac_straight
163 } dac0_coding
, dac1_coding
;
164 const struct comedi_lrange
*ao_range_type_list
[2];
165 unsigned int ao_readback
[2];
169 #define devpriv ((rti800_private *)dev->private)
171 #define RTI800_TIMEOUT 100
173 static irqreturn_t
rti800_interrupt(int irq
, void *dev PT_REGS_ARG
)
178 // settling delay times in usec for different gains
179 static const int gaindelay
[] = { 10, 20, 40, 80 };
181 static int rti800_ai_insn_read(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
182 comedi_insn
* insn
, unsigned int * data
)
186 int chan
= CR_CHAN(insn
->chanspec
);
187 unsigned gain
= CR_RANGE(insn
->chanspec
);
188 unsigned muxgain_bits
;
190 inb(dev
->iobase
+ RTI800_ADCHI
);
191 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
193 muxgain_bits
= chan
| (gain
<< 5);
194 if (muxgain_bits
!= devpriv
->muxgain_bits
) {
195 devpriv
->muxgain_bits
= muxgain_bits
;
196 outb(devpriv
->muxgain_bits
, dev
->iobase
+ RTI800_MUXGAIN
);
197 /* without a delay here, the RTI_OVERRUN bit
198 * gets set, and you will have an error. */
201 sizeof(gaindelay
) / sizeof(gaindelay
[0]));
202 comedi_udelay(gaindelay
[gain
]);
206 for (i
= 0; i
< insn
->n
; i
++) {
207 outb(0, dev
->iobase
+ RTI800_CONVERT
);
208 for (t
= RTI800_TIMEOUT
; t
; t
--) {
209 status
= inb(dev
->iobase
+ RTI800_CSR
);
210 if (status
& RTI800_OVERRUN
) {
211 rt_printk("rti800: a/d overrun\n");
212 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
215 if (status
& RTI800_DONE
)
220 rt_printk("rti800: timeout\n");
223 data
[i
] = inb(dev
->iobase
+ RTI800_ADCLO
);
224 data
[i
] |= (0xf & inb(dev
->iobase
+ RTI800_ADCHI
)) << 8;
226 if (devpriv
->adc_coding
== adc_2comp
) {
234 static int rti800_ao_insn_read(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
235 comedi_insn
* insn
, unsigned int * data
)
238 int chan
= CR_CHAN(insn
->chanspec
);
240 for (i
= 0; i
< insn
->n
; i
++)
241 data
[i
] = devpriv
->ao_readback
[chan
];
246 static int rti800_ao_insn_write(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
247 comedi_insn
* insn
, unsigned int * data
)
249 int chan
= CR_CHAN(insn
->chanspec
);
253 for (i
= 0; i
< insn
->n
; i
++) {
254 devpriv
->ao_readback
[chan
] = d
= data
[i
];
255 if (devpriv
->dac0_coding
== dac_2comp
) {
259 dev
->iobase
+ (chan
? RTI800_DAC1LO
: RTI800_DAC0LO
));
261 dev
->iobase
+ (chan
? RTI800_DAC1HI
: RTI800_DAC0HI
));
266 static int rti800_di_insn_bits(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
267 comedi_insn
* insn
, unsigned int * data
)
271 data
[1] = inb(dev
->iobase
+ RTI800_DI
);
275 static int rti800_do_insn_bits(struct comedi_device
* dev
, struct comedi_subdevice
* s
,
276 comedi_insn
* insn
, unsigned int * data
)
282 s
->state
&= ~data
[0];
283 s
->state
|= data
[0] & data
[1];
284 /* Outputs are inverted... */
285 outb(s
->state
^ 0xff, dev
->iobase
+ RTI800_DO
);
294 options[0] - I/O port
297 0=differential, 1=pseudodiff, 2=single
298 options[3] - a/d range
299 0=bipolar10, 1=bipolar5, 2=unipolar10
300 options[4] - a/d coding
301 0=2's comp, 1=straight binary
302 options[5] - dac0 range
303 0=bipolar10, 1=unipolar10
304 options[6] - dac0 coding
305 0=2's comp, 1=straight binary
306 options[7] - dac1 range
307 options[8] - dac1 coding
310 static int rti800_attach(struct comedi_device
* dev
, comedi_devconfig
* it
)
313 unsigned long iobase
;
315 struct comedi_subdevice
*s
;
317 iobase
= it
->options
[0];
318 printk("comedi%d: rti800: 0x%04lx ", dev
->minor
, iobase
);
319 if (!request_region(iobase
, RTI800_SIZE
, "rti800")) {
320 printk("I/O port conflict\n");
323 dev
->iobase
= iobase
;
326 printk("fingerprint=%x,%x,%x,%x,%x ",
327 inb(dev
->iobase
+ 0),
328 inb(dev
->iobase
+ 1),
329 inb(dev
->iobase
+ 2),
330 inb(dev
->iobase
+ 3), inb(dev
->iobase
+ 4));
333 outb(0, dev
->iobase
+ RTI800_CSR
);
334 inb(dev
->iobase
+ RTI800_ADCHI
);
335 outb(0, dev
->iobase
+ RTI800_CLRFLAGS
);
337 irq
= it
->options
[1];
339 printk("( irq = %u )", irq
);
340 if ((ret
= comedi_request_irq(irq
, rti800_interrupt
, 0,
341 "rti800", dev
)) < 0) {
342 printk(" Failed to allocate IRQ\n");
347 printk("( no irq )");
350 dev
->board_name
= this_board
->name
;
352 if ((ret
= alloc_subdevices(dev
, 4)) < 0)
354 if ((ret
= alloc_private(dev
, sizeof(rti800_private
))) < 0)
357 devpriv
->adc_mux
= it
->options
[2];
358 devpriv
->adc_range
= it
->options
[3];
359 devpriv
->adc_coding
= it
->options
[4];
360 devpriv
->dac0_range
= it
->options
[5];
361 devpriv
->dac0_coding
= it
->options
[6];
362 devpriv
->dac1_range
= it
->options
[7];
363 devpriv
->dac1_coding
= it
->options
[8];
364 devpriv
->muxgain_bits
= -1;
366 s
= dev
->subdevices
+ 0;
368 s
->type
= COMEDI_SUBD_AI
;
369 s
->subdev_flags
= SDF_READABLE
| SDF_GROUND
;
370 s
->n_chan
= (devpriv
->adc_mux
? 16 : 8);
371 s
->insn_read
= rti800_ai_insn_read
;
373 switch (devpriv
->adc_range
) {
375 s
->range_table
= &range_rti800_ai_10_bipolar
;
378 s
->range_table
= &range_rti800_ai_5_bipolar
;
381 s
->range_table
= &range_rti800_ai_unipolar
;
386 if (this_board
->has_ao
) {
387 /* ao subdevice (only on rti815) */
388 s
->type
= COMEDI_SUBD_AO
;
389 s
->subdev_flags
= SDF_WRITABLE
;
391 s
->insn_read
= rti800_ao_insn_read
;
392 s
->insn_write
= rti800_ao_insn_write
;
394 s
->range_table_list
= devpriv
->ao_range_type_list
;
395 switch (devpriv
->dac0_range
) {
397 devpriv
->ao_range_type_list
[0] = &range_bipolar10
;
400 devpriv
->ao_range_type_list
[0] = &range_unipolar10
;
403 switch (devpriv
->dac1_range
) {
405 devpriv
->ao_range_type_list
[1] = &range_bipolar10
;
408 devpriv
->ao_range_type_list
[1] = &range_unipolar10
;
412 s
->type
= COMEDI_SUBD_UNUSED
;
417 s
->type
= COMEDI_SUBD_DI
;
418 s
->subdev_flags
= SDF_READABLE
;
420 s
->insn_bits
= rti800_di_insn_bits
;
422 s
->range_table
= &range_digital
;
426 s
->type
= COMEDI_SUBD_DO
;
427 s
->subdev_flags
= SDF_WRITABLE
;
429 s
->insn_bits
= rti800_do_insn_bits
;
431 s
->range_table
= &range_digital
;
433 /* don't yet know how to deal with counter/timers */
437 s
->type
= COMEDI_SUBD_TIMER
;
445 static int rti800_detach(struct comedi_device
* dev
)
447 printk("comedi%d: rti800: remove\n", dev
->minor
);
450 release_region(dev
->iobase
, RTI800_SIZE
);
453 comedi_free_irq(dev
->irq
, dev
);