1 /***************************************************************************
3 * comedi/drivers/unioxx5.c *
4 * Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. *
6 * Copyright (C) 2006 Kruchinin Daniil (asgard) [asgard@etersoft.ru] *
8 * COMEDI - Linux Control and Measurement Device Interface *
9 * Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org> *
11 * This program is free software; you can redistribute it and/or modify *
12 * it under the terms of the GNU General Public License as published by *
13 * the Free Software Foundation; either version 2 of the License, or *
14 * (at your option) any later version. *
16 * This program is distributed in the hope that it will be useful, *
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
19 * GNU General Public License for more details. *
21 * You should have received a copy of the GNU General Public License *
22 * along with this program; if not, write to the Free Software *
23 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
25 ***************************************************************************/
29 Description: Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards.
30 Author: Kruchinin Daniil (asgard) <asgard@etersoft.ru>
33 Devices: [Fastwel] UNIOxx-5 (unioxx5),
35 This card supports digital and analog I/O. It written for g01
37 channels range: 0 .. 23 dio channels
38 and 0 .. 11 analog modules range
39 During attaching unioxx5 module displays modules identifiers
40 (see dmesg after comedi_config) in format:
41 | [module_number] module_id |
45 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
47 #include "../comedidev.h"
48 #include <linux/ioport.h>
49 #include <linux/slab.h>
51 #define DRIVER_NAME "unioxx5"
52 #define UNIOXX5_SIZE 0x10
53 #define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
54 #define UNIOXX5_SUBDEV_ODDS 0x400
57 #define MODULE_DIGITAL 0
58 #define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
60 /* constants for digital i/o */
61 #define UNIOXX5_NUM_OF_CHANS 24
63 /* constants for analog i/o */
64 #define TxBE 0x10 /* transmit buffer enable */
65 #define RxCA 0x20 /* 1 receive character available */
66 #define Rx2CA 0x40 /* 2 receive character available */
67 #define Rx4CA 0x80 /* 4 receive character available */
69 /* bytes mask errors */
70 #define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
71 #define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
74 #define ALL_2_INPUT 0 /* config all digital channels to input */
75 #define ALL_2_OUTPUT 1 /* config all digital channels to output */
77 /* 'private' structure for each subdevice */
78 struct unioxx5_subd_priv
{
80 /* 12 modules. each can be 70L or 73L */
81 unsigned char usp_module_type
[12];
82 /* for saving previous written value for analog modules */
83 unsigned char usp_extra_data
[12][4];
84 unsigned char usp_prev_wr_val
[3]; /* previous written value */
85 unsigned char usp_prev_cn_val
[3]; /* previous channel value */
88 static int __unioxx5_define_chan_offset(int chan_num
)
91 if (chan_num
< 0 || chan_num
> 23)
94 return (chan_num
>> 3) + 1;
98 static void __unioxx5_digital_config(struct unioxx5_subd_priv
*usp
, int mode
)
102 mask
= (mode
== ALL_2_OUTPUT
) ? 0xFF : 0x00;
103 printk("COMEDI: mode = %d\n", mask
);
105 outb(1, usp
->usp_iobase
+ 0);
107 for (i
= 0; i
< 3; i
++)
108 outb(mask
, usp
->usp_iobase
+ i
);
110 outb(0, usp
->usp_iobase
+ 0);
114 /* configure channels for analog i/o (even to output, odd to input) */
115 static void __unioxx5_analog_config(struct unioxx5_subd_priv
*usp
, int channel
)
117 int chan_a
, chan_b
, conf
, channel_offset
;
119 channel_offset
= __unioxx5_define_chan_offset(channel
);
120 conf
= usp
->usp_prev_cn_val
[channel_offset
- 1];
123 /* setting channel A and channel B mask */
124 if (channel
% 2 == 0) {
125 chan_a
<<= channel
& 0x07;
126 chan_b
<<= (channel
+ 1) & 0x07;
128 chan_a
<<= (channel
- 1) & 0x07;
129 chan_b
<<= channel
& 0x07;
132 conf
|= chan_a
; /* even channel ot output */
133 conf
&= ~chan_b
; /* odd channel to input */
135 outb(1, usp
->usp_iobase
+ 0);
136 outb(conf
, usp
->usp_iobase
+ channel_offset
);
137 outb(0, usp
->usp_iobase
+ 0);
139 usp
->usp_prev_cn_val
[channel_offset
- 1] = conf
;
142 static int __unioxx5_digital_read(struct unioxx5_subd_priv
*usp
,
143 unsigned int *data
, int channel
, int minor
)
145 int channel_offset
, mask
= 1 << (channel
& 0x07);
147 channel_offset
= __unioxx5_define_chan_offset(channel
);
148 if (channel_offset
< 0) {
149 pr_err("comedi%d: undefined channel %d. channel range is 0 .. 23\n",
154 *data
= inb(usp
->usp_iobase
+ channel_offset
);
157 /* correct the read value to 0 or 1 */
158 if (channel_offset
> 1)
159 channel
-= 2 << channel_offset
;
164 static int __unioxx5_analog_read(struct unioxx5_subd_priv
*usp
,
165 unsigned int *data
, int channel
, int minor
)
167 int module_no
, read_ch
;
170 module_no
= channel
/ 2;
171 read_ch
= channel
% 2; /* depend on type of channel (A or B) */
173 /* defining if given module can work on input */
174 if (usp
->usp_module_type
[module_no
] & MODULE_OUTPUT_MASK
) {
175 pr_err("comedi%d: module in position %d with id 0x%02x is for output only",
176 minor
, module_no
, usp
->usp_module_type
[module_no
]);
180 __unioxx5_analog_config(usp
, channel
);
181 /* sends module number to card(1 .. 12) */
182 outb(module_no
+ 1, usp
->usp_iobase
+ 5);
183 outb('V', usp
->usp_iobase
+ 6); /* sends to module (V)erify command */
184 control
= inb(usp
->usp_iobase
); /* get control register byte */
186 /* waits while reading four bytes will be allowed */
187 while (!((control
= inb(usp
->usp_iobase
+ 0)) & Rx4CA
))
190 /* if four bytes readding error occurs - return 0(false) */
191 if ((control
& Rx4CA_ERR_MASK
)) {
192 printk("COMEDI: 4 bytes error\n");
197 *data
= inw(usp
->usp_iobase
+ 6); /* channel B */
199 *data
= inw(usp
->usp_iobase
+ 4); /* channel A */
204 static int __unioxx5_digital_write(struct unioxx5_subd_priv
*usp
,
205 unsigned int *data
, int channel
, int minor
)
207 int channel_offset
, val
;
208 int mask
= 1 << (channel
& 0x07);
210 channel_offset
= __unioxx5_define_chan_offset(channel
);
211 if (channel_offset
< 0) {
212 pr_err("comedi%d: undefined channel %d. channel range is 0 .. 23\n",
217 /* getting previous written value */
218 val
= usp
->usp_prev_wr_val
[channel_offset
- 1];
225 outb(val
, usp
->usp_iobase
+ channel_offset
);
226 /* saving new written value */
227 usp
->usp_prev_wr_val
[channel_offset
- 1] = val
;
232 static int __unioxx5_analog_write(struct unioxx5_subd_priv
*usp
,
233 unsigned int *data
, int channel
, int minor
)
237 module
= channel
/ 2; /* definig module number(0 .. 11) */
238 i
= (channel
% 2) << 1; /* depends on type of channel (A or B) */
240 /* defining if given module can work on output */
241 if (!(usp
->usp_module_type
[module
] & MODULE_OUTPUT_MASK
)) {
242 pr_err("comedi%d: module in position %d with id 0x%0x is for input only!\n",
243 minor
, module
, usp
->usp_module_type
[module
]);
247 __unioxx5_analog_config(usp
, channel
);
248 /* saving minor byte */
249 usp
->usp_extra_data
[module
][i
++] = (unsigned char)(*data
& 0x00FF);
250 /* saving major byte */
251 usp
->usp_extra_data
[module
][i
] = (unsigned char)((*data
& 0xFF00) >> 8);
253 /* while(!((inb(usp->usp_iobase + 0)) & TxBE)); */
254 /* sending module number to card(1 .. 12) */
255 outb(module
+ 1, usp
->usp_iobase
+ 5);
256 outb('W', usp
->usp_iobase
+ 6); /* sends (W)rite command to module */
258 /* sending for bytes to module(one byte per cycle iteration) */
259 for (i
= 0; i
< 4; i
++) {
260 while (!((inb(usp
->usp_iobase
+ 0)) & TxBE
))
261 ; /* waits while writting will be allowed */
262 outb(usp
->usp_extra_data
[module
][i
], usp
->usp_iobase
+ 6);
268 static int unioxx5_subdev_read(struct comedi_device
*dev
,
269 struct comedi_subdevice
*subdev
,
270 struct comedi_insn
*insn
, unsigned int *data
)
272 struct unioxx5_subd_priv
*usp
= subdev
->private;
275 channel
= CR_CHAN(insn
->chanspec
);
276 /* defining module type(analog or digital) */
277 type
= usp
->usp_module_type
[channel
/ 2];
279 if (type
== MODULE_DIGITAL
) {
280 if (!__unioxx5_digital_read(usp
, data
, channel
, dev
->minor
))
283 if (!__unioxx5_analog_read(usp
, data
, channel
, dev
->minor
))
290 static int unioxx5_subdev_write(struct comedi_device
*dev
,
291 struct comedi_subdevice
*subdev
,
292 struct comedi_insn
*insn
, unsigned int *data
)
294 struct unioxx5_subd_priv
*usp
= subdev
->private;
297 channel
= CR_CHAN(insn
->chanspec
);
298 /* defining module type(analog or digital) */
299 type
= usp
->usp_module_type
[channel
/ 2];
301 if (type
== MODULE_DIGITAL
) {
302 if (!__unioxx5_digital_write(usp
, data
, channel
, dev
->minor
))
305 if (!__unioxx5_analog_write(usp
, data
, channel
, dev
->minor
))
312 /* for digital modules only */
313 static int unioxx5_insn_config(struct comedi_device
*dev
,
314 struct comedi_subdevice
*subdev
,
315 struct comedi_insn
*insn
, unsigned int *data
)
317 int channel_offset
, flags
, channel
= CR_CHAN(insn
->chanspec
), type
;
318 struct unioxx5_subd_priv
*usp
= subdev
->private;
319 int mask
= 1 << (channel
& 0x07);
321 type
= usp
->usp_module_type
[channel
/ 2];
323 if (type
!= MODULE_DIGITAL
) {
324 dev_err(dev
->class_dev
,
325 "comedi%d: channel configuration accessible only for digital modules\n",
330 channel_offset
= __unioxx5_define_chan_offset(channel
);
331 if (channel_offset
< 0) {
332 dev_err(dev
->class_dev
,
333 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
334 dev
->minor
, channel
);
338 /* gets previously written value */
339 flags
= usp
->usp_prev_cn_val
[channel_offset
- 1];
349 dev_err(dev
->class_dev
,
350 "comedi%d: unknown flag\n", dev
->minor
);
355 * sets channels buffer to 1(after this we are allowed to *
356 * change channel type on input or output) *
358 outb(1, usp
->usp_iobase
+ 0);
359 /* changes type of _one_ channel */
360 outb(flags
, usp
->usp_iobase
+ channel_offset
);
361 /* sets channels bank to 0(allows directly input/output) */
362 outb(0, usp
->usp_iobase
+ 0);
363 /* saves written value */
364 usp
->usp_prev_cn_val
[channel_offset
- 1] = flags
;
369 /* initializing subdevice with given address */
370 static int __unioxx5_subdev_init(struct comedi_device
*dev
,
371 struct comedi_subdevice
*s
,
374 struct unioxx5_subd_priv
*usp
;
375 int i
, to
, ndef_flag
= 0;
378 usp
= kzalloc(sizeof(*usp
), GFP_KERNEL
);
382 ret
= __comedi_request_region(dev
, iobase
, UNIOXX5_SIZE
);
387 usp
->usp_iobase
= iobase
;
389 /* defining modules types */
390 for (i
= 0; i
< 12; i
++) {
393 __unioxx5_analog_config(usp
, i
* 2);
394 /* sends channel number to card */
395 outb(i
+ 1, iobase
+ 5);
396 outb('H', iobase
+ 6); /* requests EEPROM world */
397 while (!(inb(iobase
+ 0) & TxBE
))
398 ; /* waits while writting will be allowed */
401 /* waits while reading of two bytes will be allowed */
402 while (!(inb(iobase
+ 0) & Rx2CA
)) {
410 usp
->usp_module_type
[i
] = 0;
413 usp
->usp_module_type
[i
] = inb(iobase
+ 6);
418 /* initial subdevice for digital or analog i/o */
419 s
->type
= COMEDI_SUBD_DIO
;
421 s
->subdev_flags
= SDF_READABLE
| SDF_WRITABLE
;
422 s
->n_chan
= UNIOXX5_NUM_OF_CHANS
;
424 s
->range_table
= &range_digital
;
425 s
->insn_read
= unioxx5_subdev_read
;
426 s
->insn_write
= unioxx5_subdev_write
;
427 /* for digital modules only!!! */
428 s
->insn_config
= unioxx5_insn_config
;
433 static int unioxx5_attach(struct comedi_device
*dev
,
434 struct comedi_devconfig
*it
)
436 struct comedi_subdevice
*s
;
437 int iobase
, i
, n_subd
;
441 iobase
= it
->options
[0];
443 dev
->iobase
= iobase
;
444 iobase
+= UNIOXX5_SUBDEV_BASE
;
446 /* defining number of subdevices and getting they types (it must be 'g01') */
447 for (i
= n_subd
= 0, ba
= iobase
; i
< 4; i
++, ba
+= UNIOXX5_SUBDEV_ODDS
) {
451 if (id
!= 'g' || num
!= 1)
457 /* unioxx5 can has from two to four subdevices */
459 dev_err(dev
->class_dev
,
460 "your card must has at least 2 'g01' subdevices\n");
464 ret
= comedi_alloc_subdevices(dev
, n_subd
);
468 /* initializing each of for same subdevices */
469 for (i
= 0; i
< n_subd
; i
++, iobase
+= UNIOXX5_SUBDEV_ODDS
) {
470 s
= &dev
->subdevices
[i
];
471 ret
= __unioxx5_subdev_init(dev
, s
, iobase
);
479 static void unioxx5_detach(struct comedi_device
*dev
)
482 struct comedi_subdevice
*subdev
;
483 struct unioxx5_subd_priv
*usp
;
485 for (i
= 0; i
< dev
->n_subdevices
; i
++) {
486 subdev
= &dev
->subdevices
[i
];
487 usp
= subdev
->private;
488 release_region(usp
->usp_iobase
, UNIOXX5_SIZE
);
489 kfree(subdev
->private);
493 static struct comedi_driver unioxx5_driver
= {
494 .driver_name
= DRIVER_NAME
,
495 .module
= THIS_MODULE
,
496 .attach
= unioxx5_attach
,
497 .detach
= unioxx5_detach
,
499 module_comedi_driver(unioxx5_driver
);
501 MODULE_AUTHOR("Comedi http://www.comedi.org");
502 MODULE_DESCRIPTION("Comedi low-level driver");
503 MODULE_LICENSE("GPL");