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 #include "../comedidev.h"
46 #include <linux/ioport.h>
47 #include <linux/slab.h>
49 #define DRIVER_NAME "unioxx5"
50 #define UNIOXX5_SIZE 0x10
51 #define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
52 #define UNIOXX5_SUBDEV_ODDS 0x400
55 #define MODULE_DIGITAL 0
56 #define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
58 /* constants for digital i/o */
59 #define UNIOXX5_NUM_OF_CHANS 24
61 /* constants for analog i/o */
62 #define TxBE 0x10 /* transmit buffer enable */
63 #define RxCA 0x20 /* 1 receive character available */
64 #define Rx2CA 0x40 /* 2 receive character available */
65 #define Rx4CA 0x80 /* 4 receive character available */
67 /* bytes mask errors */
68 #define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
69 #define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
72 #define ALL_2_INPUT 0 /* config all digital channels to input */
73 #define ALL_2_OUTPUT 1 /* config all digital channels to output */
75 /* 'private' structure for each subdevice */
76 struct unioxx5_subd_priv {
78 /* 12 modules. each can be 70L or 73L */
79 unsigned char usp_module_type[12];
80 /* for saving previous written value for analog modules */
81 unsigned char usp_extra_data[12][4];
82 unsigned char usp_prev_wr_val[3]; /* previous written value */
83 unsigned char usp_prev_cn_val[3]; /* previous channel value */
86 static int __unioxx5_define_chan_offset(int chan_num)
89 if (chan_num < 0 || chan_num > 23)
92 return (chan_num >> 3) + 1;
96 static void __unioxx5_digital_config(struct unioxx5_subd_priv *usp, int mode)
100 mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00;
101 printk("COMEDI: mode = %d\n", mask);
103 outb(1, usp->usp_iobase + 0);
105 for (i = 0; i < 3; i++)
106 outb(mask, usp->usp_iobase + i);
108 outb(0, usp->usp_iobase + 0);
112 /* configure channels for analog i/o (even to output, odd to input) */
113 static void __unioxx5_analog_config(struct unioxx5_subd_priv *usp, int channel)
115 int chan_a, chan_b, conf, channel_offset;
117 channel_offset = __unioxx5_define_chan_offset(channel);
118 conf = usp->usp_prev_cn_val[channel_offset - 1];
121 /* setting channel A and channel B mask */
122 if (channel % 2 == 0) {
123 chan_a <<= channel & 0x07;
124 chan_b <<= (channel + 1) & 0x07;
126 chan_a <<= (channel - 1) & 0x07;
127 chan_b <<= channel & 0x07;
130 conf |= chan_a; /* even channel ot output */
131 conf &= ~chan_b; /* odd channel to input */
133 outb(1, usp->usp_iobase + 0);
134 outb(conf, usp->usp_iobase + channel_offset);
135 outb(0, usp->usp_iobase + 0);
137 usp->usp_prev_cn_val[channel_offset - 1] = conf;
140 static int __unioxx5_digital_read(struct unioxx5_subd_priv *usp,
141 unsigned int *data, int channel, int minor)
143 int channel_offset, mask = 1 << (channel & 0x07);
145 channel_offset = __unioxx5_define_chan_offset(channel);
146 if (channel_offset < 0) {
148 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
153 *data = inb(usp->usp_iobase + channel_offset);
156 /* correct the read value to 0 or 1 */
157 if (channel_offset > 1)
158 channel -= 2 << channel_offset;
163 static int __unioxx5_analog_read(struct unioxx5_subd_priv *usp,
164 unsigned int *data, int channel, int minor)
166 int module_no, read_ch;
169 module_no = channel / 2;
170 read_ch = channel % 2; /* depend on type of channel (A or B) */
172 /* defining if given module can work on input */
173 if (usp->usp_module_type[module_no] & MODULE_OUTPUT_MASK) {
175 "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) {
213 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
218 /* getting previous written value */
219 val = usp->usp_prev_wr_val[channel_offset - 1];
226 outb(val, usp->usp_iobase + channel_offset);
227 /* saving new written value */
228 usp->usp_prev_wr_val[channel_offset - 1] = val;
233 static int __unioxx5_analog_write(struct unioxx5_subd_priv *usp,
234 unsigned int *data, int channel, int minor)
238 module = channel / 2; /* definig module number(0 .. 11) */
239 i = (channel % 2) << 1; /* depends on type of channel (A or B) */
241 /* defining if given module can work on output */
242 if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) {
244 "comedi%d: module in position %d with id 0x%0x is for input only!\n",
245 minor, module, usp->usp_module_type[module]);
249 __unioxx5_analog_config(usp, channel);
250 /* saving minor byte */
251 usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF);
252 /* saving major byte */
253 usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8);
255 /* while(!((inb(usp->usp_iobase + 0)) & TxBE)); */
256 /* sending module number to card(1 .. 12) */
257 outb(module + 1, usp->usp_iobase + 5);
258 outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */
260 /* sending for bytes to module(one byte per cycle iteration) */
261 for (i = 0; i < 4; i++) {
262 while (!((inb(usp->usp_iobase + 0)) & TxBE))
263 ; /* waits while writting will be allowed */
264 outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6);
270 static int unioxx5_subdev_read(struct comedi_device *dev,
271 struct comedi_subdevice *subdev,
272 struct comedi_insn *insn, unsigned int *data)
274 struct unioxx5_subd_priv *usp = subdev->private;
277 channel = CR_CHAN(insn->chanspec);
278 /* defining module type(analog or digital) */
279 type = usp->usp_module_type[channel / 2];
281 if (type == MODULE_DIGITAL) {
282 if (!__unioxx5_digital_read(usp, data, channel, dev->minor))
285 if (!__unioxx5_analog_read(usp, data, channel, dev->minor))
292 static int unioxx5_subdev_write(struct comedi_device *dev,
293 struct comedi_subdevice *subdev,
294 struct comedi_insn *insn, unsigned int *data)
296 struct unioxx5_subd_priv *usp = subdev->private;
299 channel = CR_CHAN(insn->chanspec);
300 /* defining module type(analog or digital) */
301 type = usp->usp_module_type[channel / 2];
303 if (type == MODULE_DIGITAL) {
304 if (!__unioxx5_digital_write(usp, data, channel, dev->minor))
307 if (!__unioxx5_analog_write(usp, data, channel, dev->minor))
314 /* for digital modules only */
315 static int unioxx5_insn_config(struct comedi_device *dev,
316 struct comedi_subdevice *subdev,
317 struct comedi_insn *insn, unsigned int *data)
319 int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type;
320 struct unioxx5_subd_priv *usp = subdev->private;
321 int mask = 1 << (channel & 0x07);
323 type = usp->usp_module_type[channel / 2];
325 if (type != MODULE_DIGITAL) {
327 "comedi%d: channel configuration accessible only for digital modules\n",
332 channel_offset = __unioxx5_define_chan_offset(channel);
333 if (channel_offset < 0) {
335 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
336 dev->minor, channel);
340 /* gets previously written value */
341 flags = usp->usp_prev_cn_val[channel_offset - 1];
351 printk(KERN_ERR "comedi%d: unknown flag\n", dev->minor);
356 * sets channels buffer to 1(after this we are allowed to *
357 * change channel type on input or output) *
359 outb(1, usp->usp_iobase + 0);
360 /* changes type of _one_ channel */
361 outb(flags, usp->usp_iobase + channel_offset);
362 /* sets channels bank to 0(allows directly input/output) */
363 outb(0, usp->usp_iobase + 0);
364 /* saves written value */
365 usp->usp_prev_cn_val[channel_offset - 1] = flags;
370 /* initializing subdevice with given address */
371 static int __unioxx5_subdev_init(struct comedi_subdevice *subdev,
372 int subdev_iobase, int minor)
374 struct unioxx5_subd_priv *usp;
375 int i, to, ndef_flag = 0;
377 if (!request_region(subdev_iobase, UNIOXX5_SIZE, DRIVER_NAME)) {
378 printk(KERN_ERR "comedi%d: I/O port conflict\n", minor);
382 usp = kzalloc(sizeof(*usp), GFP_KERNEL);
385 printk(KERN_ERR "comedi%d: error! --> out of memory!\n", minor);
389 usp->usp_iobase = subdev_iobase;
390 printk(KERN_INFO "comedi%d: |", minor);
392 /* defining modules types */
393 for (i = 0; i < 12; i++) {
396 __unioxx5_analog_config(usp, i * 2);
397 /* sends channel number to card */
398 outb(i + 1, subdev_iobase + 5);
399 outb('H', subdev_iobase + 6); /* requests EEPROM world */
400 while (!(inb(subdev_iobase + 0) & TxBE))
401 ; /* waits while writting will be allowed */
402 outb(0, subdev_iobase + 6);
404 /* waits while reading of two bytes will be allowed */
405 while (!(inb(subdev_iobase + 0) & Rx2CA)) {
413 usp->usp_module_type[i] = 0;
416 usp->usp_module_type[i] = inb(subdev_iobase + 6);
418 printk(" [%d] 0x%02x |", i, usp->usp_module_type[i]);
424 /* initial subdevice for digital or analog i/o */
425 subdev->type = COMEDI_SUBD_DIO;
426 subdev->private = usp;
427 subdev->subdev_flags = SDF_READABLE | SDF_WRITABLE;
428 subdev->n_chan = UNIOXX5_NUM_OF_CHANS;
429 subdev->maxdata = 0xFFF;
430 subdev->range_table = &range_digital;
431 subdev->insn_read = unioxx5_subdev_read;
432 subdev->insn_write = unioxx5_subdev_write;
433 /* for digital modules only!!! */
434 subdev->insn_config = unioxx5_insn_config;
436 printk(KERN_INFO "subdevice configured\n");
441 static int unioxx5_attach(struct comedi_device *dev,
442 struct comedi_devconfig *it)
444 int iobase, i, n_subd;
448 iobase = it->options[0];
450 dev->board_name = DRIVER_NAME;
451 dev->iobase = iobase;
452 iobase += UNIOXX5_SUBDEV_BASE;
454 /* defining number of subdevices and getting they types (it must be 'g01') */
455 for (i = n_subd = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) {
459 if (id != 'g' || num != 1)
465 /* unioxx5 can has from two to four subdevices */
468 "your card must has at least 2 'g01' subdevices\n");
472 ret = comedi_alloc_subdevices(dev, n_subd);
476 /* initializing each of for same subdevices */
477 for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) {
478 if (__unioxx5_subdev_init(&dev->subdevices[i], iobase,
483 printk(KERN_INFO "attached\n");
487 static void unioxx5_detach(struct comedi_device *dev)
490 struct comedi_subdevice *subdev;
491 struct unioxx5_subd_priv *usp;
493 for (i = 0; i < dev->n_subdevices; i++) {
494 subdev = &dev->subdevices[i];
495 usp = subdev->private;
496 release_region(usp->usp_iobase, UNIOXX5_SIZE);
497 kfree(subdev->private);
501 static struct comedi_driver unioxx5_driver = {
502 .driver_name = DRIVER_NAME,
503 .module = THIS_MODULE,
504 .attach = unioxx5_attach,
505 .detach = unioxx5_detach,
507 module_comedi_driver(unioxx5_driver);
509 MODULE_AUTHOR("Comedi http://www.comedi.org");
510 MODULE_DESCRIPTION("Comedi low-level driver");
511 MODULE_LICENSE("GPL");