+++ /dev/null
-/***************************************************************************
- * *
- * comedi/drivers/unioxx5.c *
- * Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. *
- * *
- * Copyright (C) 2006 Kruchinin Daniil (asgard) [asgard@etersoft.ru] *
- * *
- * COMEDI - Linux Control and Measurement Device Interface *
- * Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org> *
- * *
- * This program is free software; you can redistribute it and/or modify *
- * it under the terms of the GNU General Public License as published by *
- * the Free Software Foundation; either version 2 of the License, or *
- * (at your option) any later version. *
- * *
- * This program is distributed in the hope that it will be useful, *
- * but WITHOUT ANY WARRANTY; without even the implied warranty of *
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
- * GNU General Public License for more details. *
- * *
- ***************************************************************************/
-/*
-
-Driver: unioxx5
-Description: Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards.
-Author: Kruchinin Daniil (asgard) <asgard@etersoft.ru>
-Status: unknown
-Updated: 2006-10-09
-Devices: [Fastwel] UNIOxx-5 (unioxx5),
-
- This card supports digital and analog I/O. It written for g01
- subdevices only.
- channels range: 0 .. 23 dio channels
- and 0 .. 11 analog modules range
- During attaching unioxx5 module displays modules identifiers
- (see dmesg after comedi_config) in format:
- | [module_number] module_id |
-
-*/
-
-#include <linux/module.h>
-#include <linux/delay.h>
-#include "../comedidev.h"
-
-#define UNIOXX5_SIZE 0x10
-#define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
-#define UNIOXX5_SUBDEV_ODDS 0x400
-
-/* modules types */
-#define MODULE_DIGITAL 0
-#define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
-
-/* constants for digital i/o */
-#define UNIOXX5_NUM_OF_CHANS 24
-
-/* constants for analog i/o */
-#define TxBE 0x10 /* transmit buffer enable */
-#define RxCA 0x20 /* 1 receive character available */
-#define Rx2CA 0x40 /* 2 receive character available */
-#define Rx4CA 0x80 /* 4 receive character available */
-
-/* bytes mask errors */
-#define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
-#define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
-
-/* channel modes */
-#define ALL_2_INPUT 0 /* config all digital channels to input */
-#define ALL_2_OUTPUT 1 /* config all digital channels to output */
-
-/* 'private' structure for each subdevice */
-struct unioxx5_subd_priv {
- int usp_iobase;
- /* 12 modules. each can be 70L or 73L */
- unsigned char usp_module_type[12];
- /* for saving previous written value for analog modules */
- unsigned char usp_extra_data[12][4];
- unsigned char usp_prev_wr_val[3]; /* previous written value */
- unsigned char usp_prev_cn_val[3]; /* previous channel value */
-};
-
-static int __unioxx5_define_chan_offset(int chan_num)
-{
- if (chan_num < 0 || chan_num > 23)
- return -1;
-
- return (chan_num >> 3) + 1;
-}
-
-#if 0 /* not used? */
-static void __unioxx5_digital_config(struct comedi_subdevice *s, int mode)
-{
- struct unioxx5_subd_priv *usp = s->private;
- struct device *csdev = s->device->class_dev;
- int i, mask;
-
- mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00;
- dev_dbg(csdev, "mode = %d\n", mask);
-
- outb(1, usp->usp_iobase + 0);
-
- for (i = 0; i < 3; i++)
- outb(mask, usp->usp_iobase + i);
-
- outb(0, usp->usp_iobase + 0);
-}
-#endif
-
-/* configure channels for analog i/o (even to output, odd to input) */
-static void __unioxx5_analog_config(struct unioxx5_subd_priv *usp, int channel)
-{
- int chan_a, chan_b, conf, channel_offset;
-
- channel_offset = __unioxx5_define_chan_offset(channel);
- conf = usp->usp_prev_cn_val[channel_offset - 1];
- chan_a = chan_b = 1;
-
- /* setting channel A and channel B mask */
- if (channel % 2 == 0) {
- chan_a <<= channel & 0x07;
- chan_b <<= (channel + 1) & 0x07;
- } else {
- chan_a <<= (channel - 1) & 0x07;
- chan_b <<= channel & 0x07;
- }
-
- conf |= chan_a; /* even channel ot output */
- conf &= ~chan_b; /* odd channel to input */
-
- outb(1, usp->usp_iobase + 0);
- outb(conf, usp->usp_iobase + channel_offset);
- outb(0, usp->usp_iobase + 0);
-
- usp->usp_prev_cn_val[channel_offset - 1] = conf;
-}
-
-static int __unioxx5_digital_read(struct comedi_subdevice *s,
- unsigned int *data, int channel, int minor)
-{
- struct unioxx5_subd_priv *usp = s->private;
- struct device *csdev = s->device->class_dev;
- int channel_offset, mask = 1 << (channel & 0x07);
-
- channel_offset = __unioxx5_define_chan_offset(channel);
- if (channel_offset < 0) {
- dev_err(csdev,
- "undefined channel %d. channel range is 0 .. 23\n",
- channel);
- return 0;
- }
-
- *data = inb(usp->usp_iobase + channel_offset);
- *data &= mask;
-
- /* correct the read value to 0 or 1 */
- if (channel_offset > 1)
- channel -= 2 << channel_offset;
- *data >>= channel;
- return 1;
-}
-
-static int __unioxx5_analog_read(struct comedi_subdevice *s,
- unsigned int *data, int channel, int minor)
-{
- struct unioxx5_subd_priv *usp = s->private;
- struct device *csdev = s->device->class_dev;
- int module_no, read_ch;
- char control;
-
- module_no = channel / 2;
- read_ch = channel % 2; /* depend on type of channel (A or B) */
-
- /* defining if given module can work on input */
- if (usp->usp_module_type[module_no] & MODULE_OUTPUT_MASK) {
- dev_err(csdev,
- "module in position %d with id 0x%02x is for output only",
- module_no, usp->usp_module_type[module_no]);
- return 0;
- }
-
- __unioxx5_analog_config(usp, channel);
- /* sends module number to card(1 .. 12) */
- outb(module_no + 1, usp->usp_iobase + 5);
- outb('V', usp->usp_iobase + 6); /* sends to module (V)erify command */
- control = inb(usp->usp_iobase); /* get control register byte */
-
- /* waits while reading four bytes will be allowed */
- while (!((control = inb(usp->usp_iobase + 0)) & Rx4CA))
- ;
-
- /* if four bytes readding error occurs - return 0(false) */
- if ((control & Rx4CA_ERR_MASK)) {
- dev_err(csdev, "4 bytes error\n");
- return 0;
- }
-
- if (read_ch)
- *data = inw(usp->usp_iobase + 6); /* channel B */
- else
- *data = inw(usp->usp_iobase + 4); /* channel A */
-
- return 1;
-}
-
-static int __unioxx5_digital_write(struct comedi_subdevice *s,
- unsigned int *data, int channel, int minor)
-{
- struct unioxx5_subd_priv *usp = s->private;
- struct device *csdev = s->device->class_dev;
- int channel_offset, val;
- int mask = 1 << (channel & 0x07);
-
- channel_offset = __unioxx5_define_chan_offset(channel);
- if (channel_offset < 0) {
- dev_err(csdev,
- "undefined channel %d. channel range is 0 .. 23\n",
- channel);
- return 0;
- }
-
- /* getting previous written value */
- val = usp->usp_prev_wr_val[channel_offset - 1];
-
- if (*data)
- val |= mask;
- else
- val &= ~mask;
-
- outb(val, usp->usp_iobase + channel_offset);
- /* saving new written value */
- usp->usp_prev_wr_val[channel_offset - 1] = val;
-
- return 1;
-}
-
-static int __unioxx5_analog_write(struct comedi_subdevice *s,
- unsigned int *data, int channel, int minor)
-{
- struct unioxx5_subd_priv *usp = s->private;
- struct device *csdev = s->device->class_dev;
- int module, i;
-
- module = channel / 2; /* definig module number(0 .. 11) */
- i = (channel % 2) << 1; /* depends on type of channel (A or B) */
-
- /* defining if given module can work on output */
- if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) {
- dev_err(csdev,
- "module in position %d with id 0x%0x is for input only!\n",
- module, usp->usp_module_type[module]);
- return 0;
- }
-
- __unioxx5_analog_config(usp, channel);
- /* saving minor byte */
- usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF);
- /* saving major byte */
- usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8);
-
- /* while(!((inb(usp->usp_iobase + 0)) & TxBE)); */
- /* sending module number to card(1 .. 12) */
- outb(module + 1, usp->usp_iobase + 5);
- outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */
-
- /* sending for bytes to module(one byte per cycle iteration) */
- for (i = 0; i < 4; i++) {
- while (!((inb(usp->usp_iobase + 0)) & TxBE))
- ; /* waits while writing will be allowed */
- outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6);
- }
-
- return 1;
-}
-
-static int unioxx5_subdev_read(struct comedi_device *dev,
- struct comedi_subdevice *subdev,
- struct comedi_insn *insn, unsigned int *data)
-{
- struct unioxx5_subd_priv *usp = subdev->private;
- int channel, type;
-
- channel = CR_CHAN(insn->chanspec);
- /* defining module type(analog or digital) */
- type = usp->usp_module_type[channel / 2];
-
- if (type == MODULE_DIGITAL) {
- if (!__unioxx5_digital_read(subdev, data, channel, dev->minor))
- return -1;
- } else {
- if (!__unioxx5_analog_read(subdev, data, channel, dev->minor))
- return -1;
- }
-
- return 1;
-}
-
-static int unioxx5_subdev_write(struct comedi_device *dev,
- struct comedi_subdevice *subdev,
- struct comedi_insn *insn, unsigned int *data)
-{
- struct unioxx5_subd_priv *usp = subdev->private;
- int channel, type;
-
- channel = CR_CHAN(insn->chanspec);
- /* defining module type(analog or digital) */
- type = usp->usp_module_type[channel / 2];
-
- if (type == MODULE_DIGITAL) {
- if (!__unioxx5_digital_write(subdev, data, channel, dev->minor))
- return -1;
- } else {
- if (!__unioxx5_analog_write(subdev, data, channel, dev->minor))
- return -1;
- }
-
- return 1;
-}
-
-/* for digital modules only */
-static int unioxx5_insn_config(struct comedi_device *dev,
- struct comedi_subdevice *subdev,
- struct comedi_insn *insn, unsigned int *data)
-{
- int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type;
- struct unioxx5_subd_priv *usp = subdev->private;
- int mask = 1 << (channel & 0x07);
-
- type = usp->usp_module_type[channel / 2];
-
- if (type != MODULE_DIGITAL) {
- dev_err(dev->class_dev,
- "channel configuration accessible only for digital modules\n");
- return -1;
- }
-
- channel_offset = __unioxx5_define_chan_offset(channel);
- if (channel_offset < 0) {
- dev_err(dev->class_dev,
- "undefined channel %d. channel range is 0 .. 23\n",
- channel);
- return -1;
- }
-
- /* gets previously written value */
- flags = usp->usp_prev_cn_val[channel_offset - 1];
-
- switch (*data) {
- case COMEDI_INPUT:
- flags &= ~mask;
- break;
- case COMEDI_OUTPUT:
- flags |= mask;
- break;
- default:
- dev_err(dev->class_dev, "unknown flag\n");
- return -1;
- }
-
- /* *\
- * sets channels buffer to 1(after this we are allowed to *
- * change channel type on input or output) *
- \* */
- outb(1, usp->usp_iobase + 0);
- /* changes type of _one_ channel */
- outb(flags, usp->usp_iobase + channel_offset);
- /* sets channels bank to 0(allows directly input/output) */
- outb(0, usp->usp_iobase + 0);
- /* saves written value */
- usp->usp_prev_cn_val[channel_offset - 1] = flags;
-
- return 0;
-}
-
-/* initializing subdevice with given address */
-static int __unioxx5_subdev_init(struct comedi_device *dev,
- struct comedi_subdevice *s,
- int iobase)
-{
- struct unioxx5_subd_priv *usp;
- int i, to, ndef_flag = 0;
- int ret;
-
- usp = comedi_alloc_spriv(s, sizeof(*usp));
- if (!usp)
- return -ENOMEM;
-
- ret = __comedi_request_region(dev, iobase, UNIOXX5_SIZE);
- if (ret)
- return ret;
- usp->usp_iobase = iobase;
-
- /* defining modules types */
- for (i = 0; i < 12; i++) {
- to = 10000;
-
- __unioxx5_analog_config(usp, i * 2);
- /* sends channel number to card */
- outb(i + 1, iobase + 5);
- outb('H', iobase + 6); /* requests EEPROM world */
- while (!(inb(iobase + 0) & TxBE))
- ; /* waits while writing will be allowed */
- outb(0, iobase + 6);
-
- /* waits while reading of two bytes will be allowed */
- while (!(inb(iobase + 0) & Rx2CA)) {
- if (--to <= 0) {
- ndef_flag = 1;
- break;
- }
- }
-
- if (ndef_flag) {
- usp->usp_module_type[i] = 0;
- ndef_flag = 0;
- } else {
- usp->usp_module_type[i] = inb(iobase + 6);
- }
-
- udelay(1);
- }
-
- /* initial subdevice for digital or analog i/o */
- s->type = COMEDI_SUBD_DIO;
- s->subdev_flags = SDF_READABLE | SDF_WRITABLE;
- s->n_chan = UNIOXX5_NUM_OF_CHANS;
- s->maxdata = 0xFFF;
- s->range_table = &range_digital;
- s->insn_read = unioxx5_subdev_read;
- s->insn_write = unioxx5_subdev_write;
- /* for digital modules only!!! */
- s->insn_config = unioxx5_insn_config;
-
- return 0;
-}
-
-static int unioxx5_attach(struct comedi_device *dev,
- struct comedi_devconfig *it)
-{
- struct comedi_subdevice *s;
- int iobase, i, n_subd;
- int id, num, ba;
- int ret;
-
- iobase = it->options[0];
-
- dev->iobase = iobase;
- iobase += UNIOXX5_SUBDEV_BASE;
- n_subd = 0;
-
- /* getting number of subdevices with types 'g01' */
- for (i = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) {
- id = inb(ba + 0xE);
- num = inb(ba + 0xF);
-
- if (id != 'g' || num != 1)
- continue;
-
- n_subd++;
- }
-
- /* unioxx5 can has from two to four subdevices */
- if (n_subd < 2) {
- dev_err(dev->class_dev,
- "your card must has at least 2 'g01' subdevices\n");
- return -1;
- }
-
- ret = comedi_alloc_subdevices(dev, n_subd);
- if (ret)
- return ret;
-
- /* initializing each of for same subdevices */
- for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) {
- s = &dev->subdevices[i];
- ret = __unioxx5_subdev_init(dev, s, iobase);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
-static void unioxx5_detach(struct comedi_device *dev)
-{
- struct comedi_subdevice *s;
- struct unioxx5_subd_priv *spriv;
- int i;
-
- for (i = 0; i < dev->n_subdevices; i++) {
- s = &dev->subdevices[i];
- spriv = s->private;
- if (spriv && spriv->usp_iobase)
- release_region(spriv->usp_iobase, UNIOXX5_SIZE);
- }
-}
-
-static struct comedi_driver unioxx5_driver = {
- .driver_name = "unioxx5",
- .module = THIS_MODULE,
- .attach = unioxx5_attach,
- .detach = unioxx5_detach,
-};
-module_comedi_driver(unioxx5_driver);
-
-MODULE_AUTHOR("Comedi http://www.comedi.org");
-MODULE_DESCRIPTION("Comedi low-level driver");
-MODULE_LICENSE("GPL");
projects / cascardo / linux.git / commitdiff