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>
48 #define DRIVER_NAME "unioxx5"
49 #define UNIOXX5_SIZE 0x10
50 #define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
51 #define UNIOXX5_SUBDEV_ODDS 0x400
54 #define MODULE_DIGITAL 0
55 #define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
57 /* constants for digital i/o */
58 #define UNIOXX5_NUM_OF_CHANS 24
60 /* constants for analog i/o */
61 #define TxBE 0x10 /* transmit buffer enable */
62 #define RxCA 0x20 /* 1 receive character available */
63 #define Rx2CA 0x40 /* 2 receive character available */
64 #define Rx4CA 0x80 /* 4 receive character available */
66 /* bytes mask errors */
67 #define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
68 #define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
71 #define ALL_2_INPUT 0 /* config all digital channels to input */
72 #define ALL_2_OUTPUT 1 /* config all digital channels to output */
74 /* 'private' structure for each subdevice */
75 typedef struct unioxx5_subd_priv {
77 unsigned char usp_module_type[12]; /* 12 modules. each can be 70L or 73L */
78 unsigned char usp_extra_data[12][4]; /* for saving previous written value for analog modules */
79 unsigned char usp_prev_wr_val[3]; /* previous written value */
80 unsigned char usp_prev_cn_val[3]; /* previous channel value */
83 static int unioxx5_attach(struct comedi_device * dev, struct comedi_devconfig * it);
84 static int unioxx5_subdev_write(struct comedi_device * dev, struct comedi_subdevice * subdev,
85 struct comedi_insn * insn, unsigned int * data);
86 static int unioxx5_subdev_read(struct comedi_device * dev, struct comedi_subdevice * subdev,
87 struct comedi_insn * insn, unsigned int * data);
88 static int unioxx5_insn_config(struct comedi_device * dev, struct comedi_subdevice * subdev,
89 struct comedi_insn * insn, unsigned int * data);
90 static int unioxx5_detach(struct comedi_device * dev);
91 static int __unioxx5_subdev_init(struct comedi_subdevice * subdev, int subdev_iobase,
93 static int __unioxx5_digital_write(unioxx5_subd_priv * usp, unsigned int * data,
94 int channel, int minor);
95 static int __unioxx5_digital_read(unioxx5_subd_priv * usp, unsigned int * data,
96 int channel, int minor);
97 //static void __unioxx5_digital_config(unioxx5_subd_priv* usp, int mode);
98 static int __unioxx5_analog_write(unioxx5_subd_priv * usp, unsigned int * data,
99 int channel, int minor);
100 static int __unioxx5_analog_read(unioxx5_subd_priv * usp, unsigned int * data,
101 int channel, int minor);
102 static int __unioxx5_define_chan_offset(int chan_num);
103 static void __unioxx5_analog_config(unioxx5_subd_priv * usp, int channel);
105 static struct comedi_driver unioxx5_driver = {
106 driver_name:DRIVER_NAME,
108 attach:unioxx5_attach,
109 detach:unioxx5_detach
112 COMEDI_INITCLEANUP(unioxx5_driver);
114 static int unioxx5_attach(struct comedi_device * dev, struct comedi_devconfig * it)
116 int iobase, i, n_subd;
119 iobase = it->options[0];
121 dev->board_name = DRIVER_NAME;
122 dev->iobase = iobase;
123 iobase += UNIOXX5_SUBDEV_BASE;
125 /* defining number of subdevices and getting they types (it must be 'g01') */
126 for (i = n_subd = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) {
130 if (id != 'g' || num != 1)
136 /* unioxx5 can has from two to four subdevices */
139 "your card must has at least 2 'g01' subdevices\n");
143 if (alloc_subdevices(dev, n_subd) < 0) {
144 printk(KERN_ERR "out of memory\n");
148 /* initializing each of for same subdevices */
149 for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) {
150 if (__unioxx5_subdev_init(&dev->subdevices[i], iobase,
155 printk("attached\n");
159 static int unioxx5_subdev_read(struct comedi_device * dev, struct comedi_subdevice * subdev,
160 struct comedi_insn * insn, unsigned int * data)
162 unioxx5_subd_priv *usp = subdev->private;
165 channel = CR_CHAN(insn->chanspec);
166 type = usp->usp_module_type[channel / 2]; /* defining module type(analog or digital) */
168 if (type == MODULE_DIGITAL) {
169 if (!__unioxx5_digital_read(usp, data, channel, dev->minor))
172 if (!__unioxx5_analog_read(usp, data, channel, dev->minor))
179 static int unioxx5_subdev_write(struct comedi_device * dev, struct comedi_subdevice * subdev,
180 struct comedi_insn * insn, unsigned int * data)
182 unioxx5_subd_priv *usp = subdev->private;
185 channel = CR_CHAN(insn->chanspec);
186 type = usp->usp_module_type[channel / 2]; /* defining module type(analog or digital) */
188 if (type == MODULE_DIGITAL) {
189 if (!__unioxx5_digital_write(usp, data, channel, dev->minor))
192 if (!__unioxx5_analog_write(usp, data, channel, dev->minor))
199 /* for digital modules only */
200 static int unioxx5_insn_config(struct comedi_device * dev, struct comedi_subdevice * subdev,
201 struct comedi_insn * insn, unsigned int * data)
203 int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type;
204 unioxx5_subd_priv *usp = subdev->private;
205 int mask = 1 << (channel & 0x07);
207 type = usp->usp_module_type[channel / 2];
209 if (type != MODULE_DIGITAL) {
211 "comedi%d: channel configuration accessible only for digital modules\n",
216 if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
218 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
219 dev->minor, channel);
223 /* gets previously written value */
224 flags = usp->usp_prev_cn_val[channel_offset - 1];
234 printk(KERN_ERR "comedi%d: unknown flag\n", dev->minor);
239 * sets channels buffer to 1(after this we are allowed to *
240 * change channel type on input or output) *
242 outb(1, usp->usp_iobase + 0);
243 outb(flags, usp->usp_iobase + channel_offset); /* changes type of _one_ channel */
244 outb(0, usp->usp_iobase + 0); /* sets channels bank to 0(allows directly input/output) */
245 usp->usp_prev_cn_val[channel_offset - 1] = flags; /* saves written value */
250 static int unioxx5_detach(struct comedi_device * dev)
253 struct comedi_subdevice *subdev;
254 unioxx5_subd_priv *usp;
256 for (i = 0; i < dev->n_subdevices; i++) {
257 subdev = &dev->subdevices[i];
258 usp = subdev->private;
259 release_region(usp->usp_iobase, UNIOXX5_SIZE);
260 kfree(subdev->private);
266 /* initializing subdevice with given address */
267 static int __unioxx5_subdev_init(struct comedi_subdevice * subdev, int subdev_iobase,
270 unioxx5_subd_priv *usp;
271 int i, to, ndef_flag = 0;
273 if (!request_region(subdev_iobase, UNIOXX5_SIZE, DRIVER_NAME)) {
274 printk(KERN_ERR "comedi%d: I/O port conflict\n", minor);
278 if ((usp = (unioxx5_subd_priv *) kzalloc(sizeof(*usp),
279 GFP_KERNEL)) == NULL) {
280 printk(KERN_ERR "comedi%d: erorr! --> out of memory!\n", minor);
284 usp->usp_iobase = subdev_iobase;
285 printk("comedi%d: |", minor);
287 /* defining modules types */
288 for (i = 0; i < 12; i++) {
291 __unioxx5_analog_config(usp, i * 2);
292 outb(i + 1, subdev_iobase + 5); /* sends channel number to card */
293 outb('H', subdev_iobase + 6); /* requests EEPROM world */
294 while (!(inb(subdev_iobase + 0) & TxBE)) ; /* waits while writting will be allowed */
295 outb(0, subdev_iobase + 6);
297 /* waits while reading of two bytes will be allowed */
298 while (!(inb(subdev_iobase + 0) & Rx2CA)) {
306 usp->usp_module_type[i] = 0;
309 usp->usp_module_type[i] = inb(subdev_iobase + 6);
311 printk(" [%d] 0x%02x |", i, usp->usp_module_type[i]);
317 /* initial subdevice for digital or analog i/o */
318 subdev->type = COMEDI_SUBD_DIO;
319 subdev->private = usp;
320 subdev->subdev_flags = SDF_READABLE | SDF_WRITABLE;
321 subdev->n_chan = UNIOXX5_NUM_OF_CHANS;
322 subdev->maxdata = 0xFFF;
323 subdev->range_table = &range_digital;
324 subdev->insn_read = unioxx5_subdev_read;
325 subdev->insn_write = unioxx5_subdev_write;
326 subdev->insn_config = unioxx5_insn_config; /* for digital modules only!!! */
328 printk("subdevice configured\n");
333 static int __unioxx5_digital_write(unioxx5_subd_priv * usp, unsigned int * data,
334 int channel, int minor)
336 int channel_offset, val;
337 int mask = 1 << (channel & 0x07);
339 if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
341 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
346 val = usp->usp_prev_wr_val[channel_offset - 1]; /* getting previous written value */
353 outb(val, usp->usp_iobase + channel_offset);
354 usp->usp_prev_wr_val[channel_offset - 1] = val; /* saving new written value */
359 /* function for digital reading */
360 static int __unioxx5_digital_read(unioxx5_subd_priv * usp, unsigned int * data,
361 int channel, int minor)
363 int channel_offset, mask = 1 << (channel & 0x07);
365 if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
367 "comedi%d: undefined channel %d. channel range is 0 .. 23\n",
372 *data = inb(usp->usp_iobase + channel_offset);
375 if (channel_offset > 1)
376 channel -= 2 << channel_offset; /* this operation is created for correct readed value to 0 or 1 */
382 #if 0 /* not used? */
383 static void __unioxx5_digital_config(unioxx5_subd_priv * usp, int mode)
387 mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00;
388 printk("COMEDI: mode = %d\n", mask);
390 outb(1, usp->usp_iobase + 0);
392 for (i = 0; i < 3; i++)
393 outb(mask, usp->usp_iobase + i);
395 outb(0, usp->usp_iobase + 0);
399 static int __unioxx5_analog_write(unioxx5_subd_priv * usp, unsigned int * data,
400 int channel, int minor)
404 module = channel / 2; /* definig module number(0 .. 11) */
405 i = (channel % 2) << 1; /* depends on type of channel (A or B) */
407 /* defining if given module can work on output */
408 if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) {
410 "comedi%d: module in position %d with id 0x%0x is for input only!\n",
411 minor, module, usp->usp_module_type[module]);
415 __unioxx5_analog_config(usp, channel);
416 /* saving minor byte */
417 usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF);
418 /* saving major byte */
419 usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8);
421 //while(!((inb(usp->usp_iobase + 0)) & TxBE));
422 outb(module + 1, usp->usp_iobase + 5); /* sending module number to card(1 .. 12) */
423 outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */
425 /* sending for bytes to module(one byte per cycle iteration) */
426 for (i = 0; i < 4; i++) {
427 while (!((inb(usp->usp_iobase + 0)) & TxBE)) ; /* waits while writting will be allowed */
428 outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6);
434 static int __unioxx5_analog_read(unioxx5_subd_priv * usp, unsigned int * data,
435 int channel, int minor)
437 int module_no, read_ch;
440 module_no = channel / 2;
441 read_ch = channel % 2; /* depend on type of channel (A or B) */
443 /* defining if given module can work on input */
444 if (usp->usp_module_type[module_no] & MODULE_OUTPUT_MASK) {
446 "comedi%d: module in position %d with id 0x%02x is for output only",
447 minor, module_no, usp->usp_module_type[module_no]);
451 __unioxx5_analog_config(usp, channel);
452 outb(module_no + 1, usp->usp_iobase + 5); /* sends module number to card(1 .. 12) */
453 outb('V', usp->usp_iobase + 6); /* sends to module (V)erify command */
454 control = inb(usp->usp_iobase); /* get control register byte */
456 /* waits while reading four bytes will be allowed */
457 while (!((control = inb(usp->usp_iobase + 0)) & Rx4CA)) ;
459 /* if four bytes readding error occurs - return 0(false) */
460 if ((control & Rx4CA_ERR_MASK)) {
461 printk("COMEDI: 4 bytes error\n");
466 *data = inw(usp->usp_iobase + 6); /* channel B */
468 *data = inw(usp->usp_iobase + 4); /* channel A */
473 /* configure channels for analog i/o (even to output, odd to input) */
474 static void __unioxx5_analog_config(unioxx5_subd_priv * usp, int channel)
476 int chan_a, chan_b, conf, channel_offset;
478 channel_offset = __unioxx5_define_chan_offset(channel);
479 conf = usp->usp_prev_cn_val[channel_offset - 1];
482 /* setting channel A and channel B mask */
483 if (channel % 2 == 0) {
484 chan_a <<= channel & 0x07;
485 chan_b <<= (channel + 1) & 0x07;
487 chan_a <<= (channel - 1) & 0x07;
488 chan_b <<= channel & 0x07;
491 conf |= chan_a; /* even channel ot output */
492 conf &= ~chan_b; /* odd channel to input */
494 outb(1, usp->usp_iobase + 0);
495 outb(conf, usp->usp_iobase + channel_offset);
496 outb(0, usp->usp_iobase + 0);
498 usp->usp_prev_cn_val[channel_offset - 1] = conf;
502 * this function defines if the given channel number *
503 * enters in default numeric interspace(from 0 to 23) *
504 * and it returns address offset for usage needed *
508 static int __unioxx5_define_chan_offset(int chan_num)
511 if (chan_num < 0 || chan_num > 23)
514 return (chan_num >> 3) + 1;