Input: wistron_btns - convert to platform remove callback returning void

The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new() which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().

Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230920125829.1478827-27-u.kleine-koenig@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - use pm_sleep_ptr() to allow removal of ifdef CONFIG_PM guards

As the guards only apply to suspend and resume, #ifdef CONFIG_PM_SLEEP
would have been a tighter protection. As pm_sleep_ptr() lets the compiler
see the protected ops structure and callbacks but also lets the compiler
remove it as unused code if !CONFIG_PM_SLEEP this allows the #ifdef
guards to be removed, slightly simplifying the resulting code.

--
It seems likely that DEFINE_SIMPLE_DEV_PM_OPS() would work here but
I'd prefer not to make that change unless someone can confirm that the
extra callbacks registered will have no unwanted side effects in this
driver.

Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/20230114171620.42891-17-jic23@kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - switch to using polled mode of input devices

We have added polled mode to the normal input devices with the intent of
retiring input_polled_dev. This converts wistron_btns driver to use
the polling mode of standard input devices and removes dependency on
INPUT_POLLDEV.

Link: https://lore.kernel.org/r/20191017204217.106453-11-dmitry.torokhov@gmail.com
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 414

Based on 1 normalized pattern(s):

you can redistribute and or modify this program under the terms of
the gnu general public license version 2 as published by the free
software foundation 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 you should have
received a copy of the gnu general public license along with this
program if not write to the free software foundation inc 59 temple
place suite 330 boston ma 02111 1307 usa

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 2 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Armijn Hemel <armijn@tjaldur.nl>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190113.054726165@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Input: wistron_btns - remove use of sparse_keymap_free

Now that sparse keymap uses managed memory, we no longer need to clean it
up manually.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

input: misc: drop owner assignment from platform_drivers

A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

Input: wistron_btns - add FS AMILO Pro 8210 support

This adds Fujitsu-Siemens AMILO Pro 8210 support to wistron_btns driver.

Functions are very similar to already supported AMILO Pro 3505, but 8210
has WIFI led.

Such functionality is needed to enable WiFi under Linux on 8210 when it
cold boots with hardware rfkill enabled, without booting another operating
system or running custom utility that calls appropriate BIOS function.

Signed-off-by: Jakub Bogusz <qboosh@pld-linux.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - add MODULE_DEVICE_TABLE

This allows the wistron_btns module to be autoloaded on boot, its functionality
is required to support the hardware rfkill switches on most of the supported
notebooks, in order to unblock the hard blocked rfkill state for wireless and
bluetooth devices.

Tested on a Medion MD96500:
alias: dmi*:svn*MEDIONPC*:pn*WIM2040*:

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - mark the Medion MD96500 keymap as tested

DMI: MEDIONPC WIM 2040/WIM 2040, BIOS R01-A0O 11/04/2005
wistron_btns: BIOS signature found at c00f6b00, entry point 000FDD50
input: Wistron laptop buttons as /devices/platform/wistron-bios/input/input5

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - drop bogus MODULE_VERSION macro

MODULE_VERSION is pointless for an in-kernel module and git log confirms that
it has never been actually maintained as well (bumped a single time, despite
quite major feature additions later on, which haven't been reflected in
MODULE_VERSION).

Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: wistron_btns - fix incorrect placement of __initconst

__initconst should be placed between the variable name and equal
sign for the variable to be placed in the intended section.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: remove use of __devexit

CONFIG_HOTPLUG is going away as an option so __devexit is no
longer needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: remove use of __devinit

CONFIG_HOTPLUG is going away as an option so __devinit is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Javier Martinez Canillas <javier@dowhile0.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

Input: remove use of __devexit_p

CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer
needed.

Signed-off-by: Bill Pemberton <wfp5p@virginia.edu>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>

module_param: make bool parameters really bool (drivers & misc)

module_param(bool) used to counter-intuitively take an int. In
fddd5201 (mid-2009) we allowed bool or int/unsigned int using a messy
trick.

It's time to remove the int/unsigned int option. For this version
it'll simply give a warning, but it'll break next kernel version.

Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

Fix common misspellings

Fixes generated by 'codespell' and manually reviewed.

Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>

Input: wistron_btns - fix a memory leak in wb_module_init error path

select_keymap() calls copy_keymap() to allocate a memory for keymap.
This patch adds a missing kfree(keymap) in wb_module_init error path.

Signed-off-by: Axel Lin <axel.lin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - switch to using kmemdup()

Use kmemdup when some other buffer is immediately copied into the
allocated region.

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h

percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.

percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.

http://userweb.kernel.org/~tj/misc/slabh-sweep.py

The script does the followings.

* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.

* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.

* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.

The conversion was done in the following steps.

1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.

2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.

3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.

4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.

5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.

6. percpu.h was updated not to include slab.h.

7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).

* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig

8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.

Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.

Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

Input: wistron - fix test for CONFIG_PM

This should fix the following compile warning:

drivers/input/misc/wistron_btns.c:1331:5: warning: "CONFIG_PM" is not defined

Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - switch to using sparse keymap library

The keymap manipulation code was split into a library module,
so let's make us of it.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - remove identification strings from DMI table

The driver does not reference identification strings in DMI table and
since these strings are no longer required by DMI core we can safely
remove them and save some memory.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: add open and close methods for polled devices

Optional open and close methods for preparing and closing
the device.

Signed-off-by: Samu Onkalo <samu.p.onkalo@nokia.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - add DMI entry for Medion WIM2030 laptop

Signed-off-by: Sebastian Frei <dr.nop@gmx.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - add keymap for AOpen 1557

This one does not have anything useful in DMI either so again
we need to use:

force=1 keymap=aopen1557

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - switch to using dev_pm_ops

Also start using 'bool' where it makes sense.

Tested-by: Giuseppe Mazzotta <g.mazzotta@iragan.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - support Prestigio Wifi RF kill button

The Prestigio 157, an old no-name clone laptop uses input keys very
similar to the Wistron 1557/MS2141 with the addition of BIOS-controlled
wireless radio frequency kill switch.

This patch adds support for the RF kill switch control and adds manual
identification of the model.

The Prestigio does not expose any recognisable identity via dmidecode
and so requires manual selection at module init using

force=1 keymap=prestigio

Signed-off-by: TJ <ubuntu@tjworld.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron_btns - recognize Maxdata Pro 7000 notebooks

This patch adds DMI information to automatically load the correct
layout for the Maxdata Pro 7000X/DX notebook models. Such notebooks
are clones of Fujitsu Amilo V2000, the hook for the v2000 is being
used and I have tested that perfectly works.

The immediate result of integrating this patch is that the five
special buttons will work on these specific notebook models and that
the RF killswitch will not be activated after suspend. This patch
definitively obsoletes the fsam7400 module which I was still needing
to enable wifi and to fix the RF killswitch suspend problem; in the
current 2.6.30 kernel it is necessary to load the wistron_btns module
with options 'force=1 keymap=1557/MS2141', which was not anyway a
complete workaround.

Signed-off-by: Giuseppe Mazzotta <g.mazzotta@iragan.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for Fujitsu-Siemens Amilo Pro v3505

Wistron button support for Fujitsu-Siemens Amilo Pro Edition V3505.

Signed-off-by: Remi Herilier <rherilier@yahoo.fr>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - generate normal key event if bluetooth or wifi not present

If the subsystem is not present, instead of not doing anything, report
the key press as a normal key. This is done by modifying at
initialization the copied key entry table.

Signed-off-by: Eric Piel <Eric.Piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

leds: Standardise LED naming scheme

As discussed on LKML some notion of 'function' is needed in
LED naming. This patch adds this to the documentation and
standardises existing LED drivers.

Signed-off-by: Richard Purdie <rpurdie@rpsys.net>

drivers/firmware: const-ify DMI API and internals

Three main sets of changes:

1) dmi_get_system_info() return value should have been marked const,
since callers should not be changing that data.

2) const-ify DMI internals, since DMI firmware tables should,
whenever possible, be marked const to ensure we never ever write to
that data area.

3) const-ify DMI API, to enable marking tables const where possible
in low-level drivers.

And if we're really lucky, this might enable some additional
optimizations on the part of the compiler.

The bulk of the changes are #2 and #3, which are interrelated. #1 could
have been a separate patch, but it was so small compared to the others,
it was easier to roll it into this changeset.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

Input: wistron - add support for querying/changing keymap

Implement getkeycode and setkeycode methods for the device so
EVIOCGKEYCODE and EVIOCSKEYCODE ioctls will work.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - convert to use input-polldev

Switch to using input-polldev skeleton instead of implementing
polling loop by itself.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add LED support

Add support to wistron_btns for leds that come with the multimedia keys.
Mail and wifi leds are supported, on laptops which have them.

Depending on the laptop, wifi subsystem may control just the led, or both
the led and the wifi card. Wifi led interface is activated only for the
former type of laptops, as the latter type is already managed. Leds are
controled by the interface in /sys/class/leds.

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wriston - reduce polling frequency

Reduces the polling frequency from 10 Hz to 2 Hz, which should be less a burden
for laptops wrt energy saving. As it is multimedia keys, 500ms (maximum) of
latency should be still fine for the user. In order to keep fluent the feeling
when the user is pressing several keys in a raw (such as changing the volume),
the frequency is increased for a short duration after a key is pressed.

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - fix typo in keymap for Acer TM610

This patch fixes typo that prevented PROG2 key from working
on Acer Travelmate 610.

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - declare keymaps as initdata

As the number of keymaps increases and is very unlikely to
reduce, this patch helps to reduce memory consumption by
declaring all keymaps as __initdata and copying right keymap
during DMI detection. On x86 this make the module size at
runtime going from 10616 to 9428: a bit more than 1kb saved.

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - introduce generic keymap

It turns out that the keymaps in the wistron driver are almost the
same, the main difference being some keys which may not exist and
leds which might not be present. Therefore it's possible to write
a generic keymap which would allow the use of an unknown keyboard
with little drawbacks. The user can select it specifying the parameter
"keymap=generic".

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add acerhk laptop database

Acerhk supports already a lot of laptops. Lets import its database so
that everyone can benefit of the work of Olaf Tauber. Only the "tm_new"
laptops were imported. "tm_old" laptops could be possible but requires
more testing and probably only few laptops are still alive. "dritek"
laptops should probably be imported into a different driver. Also compress
the keymaps by fitting each entry on an int. Most of the dmi matching was
written based on google searches, so it's rather prone to errors. That's
why I'm asking people to confirm it works.

Support to generate switch input events was added as some laptops indicate
lid open/close through this interface.

This adds the following hardware:
Acer TravelMate 370
Acer TravelMate 380
Acer TravelMate C300
Acer TravelMate C100
Acer TravelMate C110
Acer TravelMate 250
Acer TravelMate 350
Acer TravelMate 620
Acer TravelMate 630
Acer TravelMate 220
Acer TravelMate 230
Acer TravelMate 260
Acer TravelMate 280
Acer TravelMate 360
Acer TravelMate 2100
Acer TravelMate 2410
Acer Aspire 1500
Acer Aspire 1600
Acer Aspire 3020
Acer Aspire 5020
Medion MD 2900
Medion MD 40100
Medion MD 95400
Medion MD 96500
Fujitsu Siemens Amilo 7820

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for TravelMate 610

Add support for Acer TravelMate 610 to wistron_btns. All special keys
are detected, but the 2 leds are not handled (yet).

Signed-off-by: Eric Piel <eric.piel@tremplin-utc.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for Fujitsu-Siemens Amilo D88x0

Tested on a Amilo D8820.

Signed-off-by: Michael Leun <ml@newton.leun.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

[PATCH] Use linux/io.h instead of asm/io.h

In preparation for moving check_signature, change these users from asm/io.h
to linux/io.h

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Input: wistron - add support for Acer TravelMate 2424NWXCi

The key mappings are the same as the older Acer TravelMate 240.

Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - fix setting up special buttons

If either wifi or bluetooth button has been detected, the code
would break off the loop. But there are laptops that have both
types of buttons, so the loop has to continue checking.

Signed-off-by: Reiner Herrmann <reiner@reiner-h.de>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - fix crash due to referencing __initdata

Remove __initdata markings from keymaps as they are used during
normal driver operations.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - fix section reference mismatches

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add mapping for Wistron MS 2111

Wistron MS 2111 (aka Medion 'Titanium' MD 9783, aka ALDI PC,
aka Fujitsu-Siemens AMILO D7800, aka ...) has 5 extra buttons,
map them. Unfortunately we only have DMI data for the Medion
box.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for AOpen Barebook 1559as

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for Fujitsu N3510

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add signature for Amilo M7400

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - do not crash if BIOS does not support interface

offset can never be < 0 because it has type size_t. The driver
currently oopses on insmod if BIOS does not support the interface,
instead of refusing to load.

Signed-off-by: Miloslav Trmac <mitr@volny.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - convert to the new platform device interface

Do not use platform_device_register_simple() as it is going away,
implement ->probe() and ->remove() functions so manual binding and
unbinding would work.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

[PATCH] drivers/input/misc/wistron_btns.c NULL noise removal

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Input: wistron - add Acer TravelMate 240 to DMI table

Signed-off-by: Ashutosh Naik <ashutosh.naik@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - disable wifi/bluetooth on suspend

Try to save battery power by disabling wifi and bluetooth on suspend.

Signed-off-by: Miloslav Trmac <mitr@volny.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add PM support

Register wistron-bios as a platform device, restore WIFI and
Bluetooth state upon resume.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - convert to dynamic input_dev allocation

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: wistron - add support for Acer Aspire 1500 notebooks

Also fix a potential issue with some notebooks:

The current code assumes the response to bios_wifi_get_default_setting is
either 1 (disabled) or 3 (enabled), or wifi isn't supported. The BIOS
response appears to be a bit field w/ 0x1 indicating hardware presence, 0x2
indicating actiation status, and the other 6 bits being unknown/reserved --
with the patch, these 6 bits are ignored.

Signed-off-by: Bernhard Rosenkraenzer <bero@arklinux.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Input: add Wistron driver

A driver for laptop buttons using an x86 BIOS interface that is
apparently used on quite a few laptops and seems to be originating
from Wistron.

This driver currently "knows" only about Fujitsu-Siemens Amilo Pro V2000
(i.e. it can detect the laptop using DMI and it contains the
keycode->key meaning mapping for this laptop) and Xeron SonicPro X 155G
(probably can't be reliably autodetected, requires a module parameter),
adding other laptops should be easy.

In addition to reporting button presses to the input layer the driver
also allows enabling/disabling the embedded wireless NIC (using the
"Wifi" button); this is done using the same BIOS interface, so it seems
only logical to keep the implementation together. Any flexibility
possibly gained by allowing users to remap the function of the "Wifi"
button is IMHO not worth it when weighted against the necessity to run
an user-space daemon to convert button presses to wifi state changes.

Signed-off-by: Miloslav Trmac <mitr@volny.cz>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>