staging: comedi: cb_pcimdda: Fix multi-line comments
Add asterisks to multi-line comments currently missing them Signed-off-by: Rasmus Linusson <rasmus@linusson.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Rasmus Linusson
Greg Kroah-Hartman
parent
dda68765d7
commit
6434b47dd9
@ -1,77 +1,77 @@
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/*
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comedi/drivers/cb_pcimdda.c
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Computer Boards PCIM-DDA06-16 Comedi driver
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Author: Calin Culianu <calin@ajvar.org>
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COMEDI - Linux Control and Measurement Device Interface
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Copyright (C) 2000 David A. Schleef <ds@schleef.org>
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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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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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* comedi/drivers/cb_pcimdda.c
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* Computer Boards PCIM-DDA06-16 Comedi driver
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* Author: Calin Culianu <calin@ajvar.org>
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*
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* COMEDI - Linux Control and Measurement Device Interface
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* Copyright (C) 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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/*
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Driver: cb_pcimdda
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Description: Measurement Computing PCIM-DDA06-16
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Devices: [Measurement Computing] PCIM-DDA06-16 (cb_pcimdda)
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Author: Calin Culianu <calin@ajvar.org>
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Updated: Mon, 14 Apr 2008 15:15:51 +0100
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Status: works
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All features of the PCIM-DDA06-16 board are supported. This board
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has 6 16-bit AO channels, and the usual 8255 DIO setup. (24 channels,
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configurable in banks of 8 and 4, etc.). This board does not support commands.
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The board has a peculiar way of specifying AO gain/range settings -- You have
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1 jumper bank on the card, which either makes all 6 AO channels either
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5 Volt unipolar, 5V bipolar, 10 Volt unipolar or 10V bipolar.
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Since there is absolutely _no_ way to tell in software how this jumper is set
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(well, at least according to the rather thin spec. from Measurement Computing
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that comes with the board), the driver assumes the jumper is at its factory
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default setting of +/-5V.
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Also of note is the fact that this board features another jumper, whose
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state is also completely invisible to software. It toggles two possible AO
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output modes on the board:
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- Update Mode: Writing to an AO channel instantaneously updates the actual
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signal output by the DAC on the board (this is the factory default).
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- Simultaneous XFER Mode: Writing to an AO channel has no effect until
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you read from any one of the AO channels. This is useful for loading
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all 6 AO values, and then reading from any one of the AO channels on the
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device to instantly update all 6 AO values in unison. Useful for some
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control apps, I would assume? If your jumper is in this setting, then you
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need to issue your comedi_data_write()s to load all the values you want,
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then issue one comedi_data_read() on any channel on the AO subdevice
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to initiate the simultaneous XFER.
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Configuration Options: not applicable, uses PCI auto config
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*/
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* Driver: cb_pcimdda
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* Description: Measurement Computing PCIM-DDA06-16
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* Devices: [Measurement Computing] PCIM-DDA06-16 (cb_pcimdda)
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* Author: Calin Culianu <calin@ajvar.org>
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* Updated: Mon, 14 Apr 2008 15:15:51 +0100
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* Status: works
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*
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* All features of the PCIM-DDA06-16 board are supported. This board
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* has 6 16-bit AO channels, and the usual 8255 DIO setup. (24 channels,
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* configurable in banks of 8 and 4, etc.). This board does not support commands.
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*
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* The board has a peculiar way of specifying AO gain/range settings -- You have
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* 1 jumper bank on the card, which either makes all 6 AO channels either
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* 5 Volt unipolar, 5V bipolar, 10 Volt unipolar or 10V bipolar.
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*
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* Since there is absolutely _no_ way to tell in software how this jumper is set
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* (well, at least according to the rather thin spec. from Measurement Computing
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* that comes with the board), the driver assumes the jumper is at its factory
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* default setting of +/-5V.
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*
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* Also of note is the fact that this board features another jumper, whose
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* state is also completely invisible to software. It toggles two possible AO
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* output modes on the board:
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*
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* - Update Mode: Writing to an AO channel instantaneously updates the actual
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* signal output by the DAC on the board (this is the factory default).
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* - Simultaneous XFER Mode: Writing to an AO channel has no effect until
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* you read from any one of the AO channels. This is useful for loading
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* all 6 AO values, and then reading from any one of the AO channels on the
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* device to instantly update all 6 AO values in unison. Useful for some
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* control apps, I would assume? If your jumper is in this setting, then you
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* need to issue your comedi_data_write()s to load all the values you want,
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* then issue one comedi_data_read() on any channel on the AO subdevice
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* to initiate the simultaneous XFER.
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*
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* Configuration Options: not applicable, uses PCI auto config
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*/
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/*
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This is a driver for the Computer Boards PCIM-DDA06-16 Analog Output
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card. This board has a unique register layout and as such probably
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deserves its own driver file.
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It is theoretically possible to integrate this board into the cb_pcidda
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file, but since that isn't my code, I didn't want to significantly
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modify that file to support this board (I thought it impolite to do so).
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At any rate, if you feel ambitious, please feel free to take
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the code out of this file and combine it with a more unified driver
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file.
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I would like to thank Timothy Curry <Timothy.Curry@rdec.redstone.army.mil>
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for lending me a board so that I could write this driver.
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-Calin Culianu <calin@ajvar.org>
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* This is a driver for the Computer Boards PCIM-DDA06-16 Analog Output
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* card. This board has a unique register layout and as such probably
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* deserves its own driver file.
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*
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* It is theoretically possible to integrate this board into the cb_pcidda
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* file, but since that isn't my code, I didn't want to significantly
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* modify that file to support this board (I thought it impolite to do so).
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*
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* At any rate, if you feel ambitious, please feel free to take
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* the code out of this file and combine it with a more unified driver
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* file.
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*
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* I would like to thank Timothy Curry <Timothy.Curry@rdec.redstone.army.mil>
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* for lending me a board so that I could write this driver.
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*
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* -Calin Culianu <calin@ajvar.org>
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*/
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#include <linux/module.h>
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