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Staging: comedi: add unioxx5 driver
Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards From: Kruchinin Daniil <asgard@etersoft.ru> Cc: David Schleef <ds@schleef.org> Cc: Frank Mori Hess <fmhess@users.sourceforge.net> Cc: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Kruchinin Daniil
committed by
Greg Kroah-Hartman
Greg Kroah-Hartman
parent
27b3f921f1
commit
110526ed6b
515
drivers/staging/comedi/drivers/unioxx5.c
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515
drivers/staging/comedi/drivers/unioxx5.c
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@@ -0,0 +1,515 @@
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/***************************************************************************
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* *
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* comedi/drivers/unioxx5.c *
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* Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards. *
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* *
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* Copyright (C) 2006 Kruchinin Daniil (asgard) [asgard@etersoft.ru] *
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* *
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* COMEDI - Linux Control and Measurement Device Interface *
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* Copyright (C) 1998,2000 David A. Schleef <ds@schleef.org> *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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* *
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***************************************************************************/
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/*
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Driver: unioxx5
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Description: Driver for Fastwel UNIOxx-5 (analog and digital i/o) boards.
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Author: Kruchinin Daniil (asgard) <asgard@etersoft.ru>
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Status: unknown
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Updated: 2006-10-09
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Devices: [Fastwel] UNIOxx-5 (unioxx5),
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This card supports digital and analog I/O. It written for g01
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subdevices only.
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channels range: 0 .. 23 dio channels
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and 0 .. 11 analog modules range
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During attaching unioxx5 module displays modules identifiers
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(see dmesg after comedi_config) in format:
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| [module_number] module_id |
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*/
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#include "../comedidev.h"
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#include <linux/ioport.h>
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#define DRIVER_NAME "unioxx5"
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#define UNIOXX5_SIZE 0x10
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#define UNIOXX5_SUBDEV_BASE 0xA000 /* base addr of first subdev */
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#define UNIOXX5_SUBDEV_ODDS 0x400
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/* modules types */
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#define MODULE_DIGITAL 0
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#define MODULE_OUTPUT_MASK 0x80 /* analog input/output */
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/* constants for digital i/o */
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#define UNIOXX5_NUM_OF_CHANS 24
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/* constants for analog i/o */
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#define TxBE 0x10 /* transmit buffer enable */
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#define RxCA 0x20 /* 1 receive character available */
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#define Rx2CA 0x40 /* 2 receive character available */
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#define Rx4CA 0x80 /* 4 receive character available */
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/* bytes mask errors */
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#define Rx2CA_ERR_MASK 0x04 /* 2 bytes receiving error */
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#define Rx4CA_ERR_MASK 0x08 /* 4 bytes receiving error */
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/* channel modes */
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#define ALL_2_INPUT 0 /* config all digital channels to input */
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#define ALL_2_OUTPUT 1 /* config all digital channels to output */
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/* 'private' structure for each subdevice */
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typedef struct unioxx5_subd_priv {
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int usp_iobase;
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unsigned char usp_module_type[12]; /* 12 modules. each can be 70L or 73L */
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unsigned char usp_extra_data[12][4]; /* for saving previous written value for analog modules */
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unsigned char usp_prev_wr_val[3]; /* previous written value */
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unsigned char usp_prev_cn_val[3]; /* previous channel value */
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} unioxx5_subd_priv;
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static int unioxx5_attach(comedi_device * dev, comedi_devconfig * it);
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static int unioxx5_subdev_write(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data);
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static int unioxx5_subdev_read(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data);
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static int unioxx5_insn_config(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data);
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static int unioxx5_detach(comedi_device * dev);
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static int __unioxx5_subdev_init(comedi_subdevice * subdev, int subdev_iobase,
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int minor);
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static int __unioxx5_digital_write(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor);
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static int __unioxx5_digital_read(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor);
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//static void __unioxx5_digital_config(unioxx5_subd_priv* usp, int mode);
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static int __unioxx5_analog_write(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor);
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static int __unioxx5_analog_read(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor);
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static int __unioxx5_define_chan_offset(int chan_num);
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static void __unioxx5_analog_config(unioxx5_subd_priv * usp, int channel);
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static comedi_driver unioxx5_driver = {
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driver_name:DRIVER_NAME,
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module:THIS_MODULE,
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attach:unioxx5_attach,
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detach:unioxx5_detach
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};
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COMEDI_INITCLEANUP(unioxx5_driver);
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static int unioxx5_attach(comedi_device * dev, comedi_devconfig * it)
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{
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int iobase, i, n_subd;
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int id, num, ba;
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iobase = it->options[0];
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dev->board_name = DRIVER_NAME;
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dev->iobase = iobase;
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iobase += UNIOXX5_SUBDEV_BASE;
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/* defining number of subdevices and getting they types (it must be 'g01') */
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for (i = n_subd = 0, ba = iobase; i < 4; i++, ba += UNIOXX5_SUBDEV_ODDS) {
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id = inb(ba + 0xE);
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num = inb(ba + 0xF);
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if (id != 'g' || num != 1)
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continue;
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n_subd++;
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}
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/* unioxx5 can has from two to four subdevices */
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if (n_subd < 2) {
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printk(KERN_ERR
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"your card must has at least 2 'g01' subdevices\n");
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return -1;
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}
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if (alloc_subdevices(dev, n_subd) < 0) {
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printk(KERN_ERR "out of memory\n");
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return -ENOMEM;
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}
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/* initializing each of for same subdevices */
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for (i = 0; i < n_subd; i++, iobase += UNIOXX5_SUBDEV_ODDS) {
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if (__unioxx5_subdev_init(&dev->subdevices[i], iobase,
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dev->minor) < 0)
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return -1;
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}
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printk("attached\n");
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return 0;
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}
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static int unioxx5_subdev_read(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data)
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{
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unioxx5_subd_priv *usp = subdev->private;
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int channel, type;
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channel = CR_CHAN(insn->chanspec);
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type = usp->usp_module_type[channel / 2]; /* defining module type(analog or digital) */
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if (type == MODULE_DIGITAL) {
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if (!__unioxx5_digital_read(usp, data, channel, dev->minor))
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return -1;
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} else {
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if (!__unioxx5_analog_read(usp, data, channel, dev->minor))
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return -1;
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}
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return 1;
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}
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static int unioxx5_subdev_write(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data)
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{
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unioxx5_subd_priv *usp = subdev->private;
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int channel, type;
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channel = CR_CHAN(insn->chanspec);
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type = usp->usp_module_type[channel / 2]; /* defining module type(analog or digital) */
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if (type == MODULE_DIGITAL) {
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if (!__unioxx5_digital_write(usp, data, channel, dev->minor))
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return -1;
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} else {
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if (!__unioxx5_analog_write(usp, data, channel, dev->minor))
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return -1;
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}
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return 1;
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}
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/* for digital modules only */
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static int unioxx5_insn_config(comedi_device * dev, comedi_subdevice * subdev,
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comedi_insn * insn, lsampl_t * data)
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{
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int channel_offset, flags, channel = CR_CHAN(insn->chanspec), type;
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unioxx5_subd_priv *usp = subdev->private;
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int mask = 1 << (channel & 0x07);
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type = usp->usp_module_type[channel / 2];
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if (type != MODULE_DIGITAL) {
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printk(KERN_ERR
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"comedi%d: channel configuration accessible only for digital modules\n",
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dev->minor);
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return -1;
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}
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if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
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printk(KERN_ERR
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"comedi%d: undefined channel %d. channel range is 0 .. 23\n",
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dev->minor, channel);
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return -1;
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}
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/* gets previously written value */
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flags = usp->usp_prev_cn_val[channel_offset - 1];
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switch (*data) {
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case COMEDI_INPUT:
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flags &= ~mask;
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break;
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case COMEDI_OUTPUT:
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flags |= mask;
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break;
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default:
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printk(KERN_ERR "comedi%d: unknown flag\n", dev->minor);
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return -1;
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}
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/* *\
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* sets channels buffer to 1(after this we are allowed to *
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* change channel type on input or output) *
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\* */
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outb(1, usp->usp_iobase + 0);
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outb(flags, usp->usp_iobase + channel_offset); /* changes type of _one_ channel */
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outb(0, usp->usp_iobase + 0); /* sets channels bank to 0(allows directly input/output) */
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usp->usp_prev_cn_val[channel_offset - 1] = flags; /* saves written value */
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return 0;
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}
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static int unioxx5_detach(comedi_device * dev)
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{
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int i;
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comedi_subdevice *subdev;
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unioxx5_subd_priv *usp;
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for (i = 0; i < dev->n_subdevices; i++) {
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subdev = &dev->subdevices[i];
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usp = subdev->private;
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release_region(usp->usp_iobase, UNIOXX5_SIZE);
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kfree(subdev->private);
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}
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return 0;
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}
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/* initializing subdevice with given address */
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static int __unioxx5_subdev_init(comedi_subdevice * subdev, int subdev_iobase,
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int minor)
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{
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unioxx5_subd_priv *usp;
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int i, to, ndef_flag = 0;
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if (!request_region(subdev_iobase, UNIOXX5_SIZE, DRIVER_NAME)) {
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printk(KERN_ERR "comedi%d: I/O port conflict\n", minor);
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return -EIO;
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}
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if ((usp = (unioxx5_subd_priv *) kzalloc(sizeof(*usp),
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GFP_KERNEL)) == NULL) {
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printk(KERN_ERR "comedi%d: erorr! --> out of memory!\n", minor);
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return -1;
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}
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usp->usp_iobase = subdev_iobase;
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printk("comedi%d: |", minor);
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/* defining modules types */
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for (i = 0; i < 12; i++) {
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to = 10000;
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__unioxx5_analog_config(usp, i * 2);
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outb(i + 1, subdev_iobase + 5); /* sends channel number to card */
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outb('H', subdev_iobase + 6); /* requests EEPROM world */
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while (!(inb(subdev_iobase + 0) & TxBE)) ; /* waits while writting will be allowed */
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outb(0, subdev_iobase + 6);
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/* waits while reading of two bytes will be allowed */
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while (!(inb(subdev_iobase + 0) & Rx2CA)) {
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if (--to <= 0) {
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ndef_flag = 1;
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break;
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}
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}
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if (ndef_flag) {
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usp->usp_module_type[i] = 0;
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ndef_flag = 0;
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} else
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usp->usp_module_type[i] = inb(subdev_iobase + 6);
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printk(" [%d] 0x%02x |", i, usp->usp_module_type[i]);
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comedi_udelay(1);
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}
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printk("\n");
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/* initial subdevice for digital or analog i/o */
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subdev->type = COMEDI_SUBD_DIO;
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subdev->private = usp;
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subdev->subdev_flags = SDF_READABLE | SDF_WRITABLE;
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subdev->n_chan = UNIOXX5_NUM_OF_CHANS;
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subdev->maxdata = 0xFFF;
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subdev->range_table = &range_digital;
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subdev->insn_read = unioxx5_subdev_read;
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subdev->insn_write = unioxx5_subdev_write;
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subdev->insn_config = unioxx5_insn_config; /* for digital modules only!!! */
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printk("subdevice configured\n");
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return 0;
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}
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static int __unioxx5_digital_write(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor)
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{
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int channel_offset, val;
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int mask = 1 << (channel & 0x07);
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if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
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printk(KERN_ERR
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"comedi%d: undefined channel %d. channel range is 0 .. 23\n",
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minor, channel);
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return 0;
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}
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val = usp->usp_prev_wr_val[channel_offset - 1]; /* getting previous written value */
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if (*data)
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val |= mask;
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else
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val &= ~mask;
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outb(val, usp->usp_iobase + channel_offset);
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usp->usp_prev_wr_val[channel_offset - 1] = val; /* saving new written value */
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return 1;
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}
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/* function for digital reading */
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static int __unioxx5_digital_read(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor)
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{
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int channel_offset, mask = 1 << (channel & 0x07);
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if ((channel_offset = __unioxx5_define_chan_offset(channel)) < 0) {
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printk(KERN_ERR
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"comedi%d: undefined channel %d. channel range is 0 .. 23\n",
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minor, channel);
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return 0;
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}
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*data = inb(usp->usp_iobase + channel_offset);
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*data &= mask;
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if (channel_offset > 1)
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channel -= 2 << channel_offset; /* this operation is created for correct readed value to 0 or 1 */
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*data >>= channel;
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return 1;
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}
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#if 0 /* not used? */
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static void __unioxx5_digital_config(unioxx5_subd_priv * usp, int mode)
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{
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int i, mask;
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mask = (mode == ALL_2_OUTPUT) ? 0xFF : 0x00;
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printk("COMEDI: mode = %d\n", mask);
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outb(1, usp->usp_iobase + 0);
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for (i = 0; i < 3; i++)
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outb(mask, usp->usp_iobase + i);
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outb(0, usp->usp_iobase + 0);
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}
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#endif
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static int __unioxx5_analog_write(unioxx5_subd_priv * usp, lsampl_t * data,
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int channel, int minor)
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{
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int module, i;
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module = channel / 2; /* definig module number(0 .. 11) */
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i = (channel % 2) << 1; /* depends on type of channel (A or B) */
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/* defining if given module can work on output */
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if (!(usp->usp_module_type[module] & MODULE_OUTPUT_MASK)) {
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printk(KERN_ERR
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"comedi%d: module in position %d with id 0x%0x is for input only!\n",
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minor, module, usp->usp_module_type[module]);
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return 0;
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}
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__unioxx5_analog_config(usp, channel);
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/* saving minor byte */
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usp->usp_extra_data[module][i++] = (unsigned char)(*data & 0x00FF);
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/* saving major byte */
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usp->usp_extra_data[module][i] = (unsigned char)((*data & 0xFF00) >> 8);
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//while(!((inb(usp->usp_iobase + 0)) & TxBE));
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outb(module + 1, usp->usp_iobase + 5); /* sending module number to card(1 .. 12) */
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outb('W', usp->usp_iobase + 6); /* sends (W)rite command to module */
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/* sending for bytes to module(one byte per cycle iteration) */
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for (i = 0; i < 4; i++) {
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while (!((inb(usp->usp_iobase + 0)) & TxBE)) ; /* waits while writting will be allowed */
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outb(usp->usp_extra_data[module][i], usp->usp_iobase + 6);
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}
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return 1;
|
||||
}
|
||||
|
||||
static int __unioxx5_analog_read(unioxx5_subd_priv * usp, lsampl_t * data,
|
||||
int channel, int minor)
|
||||
{
|
||||
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) {
|
||||
printk(KERN_ERR
|
||||
"comedi%d: module in position %d with id 0x%02x is for output only",
|
||||
minor, module_no, usp->usp_module_type[module_no]);
|
||||
return 0;
|
||||
}
|
||||
|
||||
__unioxx5_analog_config(usp, channel);
|
||||
outb(module_no + 1, usp->usp_iobase + 5); /* sends module number to card(1 .. 12) */
|
||||
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)) {
|
||||
printk("COMEDI: 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;
|
||||
}
|
||||
|
||||
/* configure channels for analog i/o (even to output, odd to input) */
|
||||
static void __unioxx5_analog_config(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;
|
||||
}
|
||||
|
||||
/* *\
|
||||
* this function defines if the given channel number *
|
||||
* enters in default numeric interspace(from 0 to 23) *
|
||||
* and it returns address offset for usage needed *
|
||||
* channel. *
|
||||
\* */
|
||||
|
||||
static int __unioxx5_define_chan_offset(int chan_num)
|
||||
{
|
||||
|
||||
if (chan_num < 0 || chan_num > 23)
|
||||
return -1;
|
||||
|
||||
return (chan_num >> 3) + 1;
|
||||
}
|
||||
Reference in New Issue
Block a user