staging: comedi: das16m1: tidy up copyright and comedi comments

/*

    comedi/drivers/das16m1.c

    CIO-DAS16/M1 driver

    Author: Frank Mori Hess, based on code from the das16

      driver.

    Copyright (C) 2001 Frank Mori Hess <fmhess@users.sourceforge.net>

    COMEDI - Linux Control and Measurement Device Interface

    Copyright (C) 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.

 * Comedi driver for CIO-DAS16/M1

 * Author: Frank Mori Hess, based on code from the das16 driver.

 * Copyright (C) 2001 Frank Mori Hess <fmhess@users.sourceforge.net>

 *

 * COMEDI - Linux Control and Measurement Device Interface

 * Copyright (C) 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: das16m1

Description: CIO-DAS16/M1

Author: Frank Mori Hess <fmhess@users.sourceforge.net>

Devices: [Measurement Computing] CIO-DAS16/M1 (das16m1)

Status: works

This driver supports a single board - the CIO-DAS16/M1.

As far as I know, there are no other boards that have

the same register layout.  Even the CIO-DAS16/M1/16 is

significantly different.

I was _barely_ able to reach the full 1 MHz capability

of this board, using a hard real-time interrupt

(set the TRIG_RT flag in your struct comedi_cmd and use

rtlinux or RTAI).  The board can't do dma, so the bottleneck is

pulling the data across the ISA bus.  I timed the interrupt

handler, and it took my computer ~470 microseconds to pull 512

samples from the board.  So at 1 Mhz sampling rate,

expect your CPU to be spending almost all of its

time in the interrupt handler.

This board has some unusual restrictions for its channel/gain list.  If the

list has 2 or more channels in it, then two conditions must be satisfied:

(1) - even/odd channels must appear at even/odd indices in the list

(2) - the list must have an even number of entries.

Options:

	[0] - base io address

	[1] - irq (optional, but you probably want it)

irq can be omitted, although the cmd interface will not work without it.

 * Driver: das16m1

 * Description: CIO-DAS16/M1

 * Author: Frank Mori Hess <fmhess@users.sourceforge.net>

 * Devices: [Measurement Computing] CIO-DAS16/M1 (das16m1)

 * Status: works

 *

 * This driver supports a single board - the CIO-DAS16/M1. As far as I know,

 * there are no other boards that have the same register layout. Even the

 * CIO-DAS16/M1/16 is significantly different.

 *

 * I was _barely_ able to reach the full 1 MHz capability of this board, using

 * a hard real-time interrupt (set the TRIG_RT flag in your struct comedi_cmd

 * and use rtlinux or RTAI). The board can't do dma, so the bottleneck is

 * pulling the data across the ISA bus. I timed the interrupt handler, and it

 * took my computer ~470 microseconds to pull 512 samples from the board. So

 * at 1 Mhz sampling rate, expect your CPU to be spending almost all of its

 * time in the interrupt handler.

 *

 * This board has some unusual restrictions for its channel/gain list.  If the

 * list has 2 or more channels in it, then two conditions must be satisfied:

 * (1) - even/odd channels must appear at even/odd indices in the list

 * (2) - the list must have an even number of entries.

 *

 * Configuration options:

 *   [0] - base io address

 *   [1] - irq (optional, but you probably want it)

 *

 * irq can be omitted, although the cmd interface will not work without it.

 */

#include <linux/module.h>