Commit 7821e8e4 authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman

staging: comedi: comedi_parport: tidy up multi-line comments

Tidy up the multi-line comments to follow the CodingStyle.
Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 88f0b62b
/*
comedi/drivers/comedi_parport.c
hardware driver for standard parallel port
COMEDI - Linux Control and Measurement Device Interface
Copyright (C) 1998,2001 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: comedi_parport
Description: Standard PC parallel port
Author: ds
Status: works in immediate mode
Devices: [standard] parallel port (comedi_parport)
Updated: Tue, 30 Apr 2002 21:11:45 -0700
A cheap and easy way to get a few more digital I/O lines. Steal
additional parallel ports from old computers or your neighbors'
computers.
Option list:
0: I/O port base for the parallel port.
1: IRQ
Parallel Port Lines:
pin subdev chan aka
--- ------ ---- ---
1 2 0 strobe
2 0 0 data 0
3 0 1 data 1
4 0 2 data 2
5 0 3 data 3
6 0 4 data 4
7 0 5 data 5
8 0 6 data 6
9 0 7 data 7
10 1 3 acknowledge
11 1 4 busy
12 1 2 output
13 1 1 printer selected
14 2 1 auto LF
15 1 0 error
16 2 2 init
17 2 3 select printer
18-25 ground
Notes:
Subdevices 0 is digital I/O, subdevice 1 is digital input, and
subdevice 2 is digital output. Unlike other Comedi devices,
subdevice 0 defaults to output.
Pins 13 and 14 are inverted once by Comedi and once by the
hardware, thus cancelling the effect.
Pin 1 is a strobe, thus acts like one. There's no way in software
to change this, at least on a standard parallel port.
Subdevice 3 pretends to be a digital input subdevice, but it always
returns 0 when read. However, if you run a command with
scan_begin_src=TRIG_EXT, it uses pin 10 as a external triggering
pin, which can be used to wake up tasks.
*/
* comedi_parport.c
* Comedi driver for standard parallel port
*
* For more information see:
* http://retired.beyondlogic.org/spp/parallel.htm
*
* COMEDI - Linux Control and Measurement Device Interface
* Copyright (C) 1998,2001 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.
*/
/*
see http://www.beyondlogic.org/ for information.
or http://www.linux-magazin.de/ausgabe/1999/10/IO/io.html
* Driver: comedi_parport
* Description: Standard PC parallel port
* Author: ds
* Status: works in immediate mode
* Devices: (standard) parallel port [comedi_parport]
* Updated: Tue, 30 Apr 2002 21:11:45 -0700
*
* A cheap and easy way to get a few more digital I/O lines. Steal
* additional parallel ports from old computers or your neighbors'
* computers.
*
* Option list:
* 0: I/O port base for the parallel port.
* 1: IRQ (optional)
*
* Parallel Port Lines:
*
* pin subdev chan type name
* ----- ------ ---- ---- --------------
* 1 2 0 DO strobe
* 2 0 0 DIO data 0
* 3 0 1 DIO data 1
* 4 0 2 DIO data 2
* 5 0 3 DIO data 3
* 6 0 4 DIO data 4
* 7 0 5 DIO data 5
* 8 0 6 DIO data 6
* 9 0 7 DIO data 7
* 10 1 3 DI ack
* 11 1 4 DI busy
* 12 1 2 DI paper out
* 13 1 1 DI select in
* 14 2 1 DO auto LF
* 15 1 0 DI error
* 16 2 2 DO init
* 17 2 3 DO select printer
* 18-25 ground
*
* When an IRQ is configured subdevice 3 pretends to be a digital
* input subdevice, but it always returns 0 when read. However, if
* you run a command with scan_begin_src=TRIG_EXT, it uses pin 10
* as a external trigger, which can be used to wake up tasks.
*/
#include <linux/module.h>
......
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