Similar to other Gigabyte laptops, the touchpad on P57 requires a
keyboard reset to detect Elantech touchpad correctly.

BugLink: https://bugs.launchpad.net/bugs/1594214Signed-off-by: NKai-Heng Feng <kai.heng.feng@canonical.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

pnp_device_id are not supposed to change at runtime. All functions
working with pnp_device_id provided by <linux/pnp.h> work with
const pnp_device_id. So mark the non-const structs as const.
Signed-off-by: NArvind Yadav <arvind.yadav.cs@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Without this quirk, the touchpad is not responsive on this product, with
the following message repeated in the logs:

 psmouse serio1: bad data from KBC - timeout

Add it to the notimeout list alongside other similar Fujitsu laptops.
Signed-off-by: NDaniel Drake <drake@endlessm.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Clevo P650RS and other similar devices require i8042 to be reset in order
to detect Synaptics touchpad.
Reported-by: NPaweł Bylica <chfast@gmail.com>
Tested-by: NEd Bordin <edbordin@gmail.com>
Cc: stable@vger.kernel.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=190301Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

TUXEDO BU1406 does not implement active multiplexing mode properly,
and takes around 550 ms in i8042_set_mux_mode(). Given that the
device does not have external AUX port, there is no downside in
disabling the MUX mode.
Reported-by: NPaul Menzel <pmenzel@molgen.mpg.de>
Suggested-by: NVojtech Pavlik <vojtech@suse.cz>
Reviewed-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The aux port does not get detected without noloop quirk, so external PS/2
mouse cannot work as result.

The PS/2 mouse can work with this quirk.

BugLink: https://bugs.launchpad.net/bugs/1591053Signed-off-by: NKai-Heng Feng <kai.heng.feng@canonical.com>
Reviewed-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The error message "Can't read CTR while initializing i8042" appears on
Cherry Trail-based devices at each boot time:

  i8042: PNP: No PS/2 controller found. Probing ports directly.
  i8042: Can't read CTR while initializing i8042
  i8042: probe of i8042 failed with error -5

This happens because we historically do not trust firmware on X86 and,
while noting that PNP does not show keyboard or mouse devices, we still
charge ahead and try to probe the controller. Let's relax this a bit and if
results of PNP probe agree with the results of platform
initialization/quirks conclude that there is, in fact, no i8042.

While at it, let's avoid using x86_platform.i8042_detect() and instead
abort execution early if platform indicates that it can not possibly have
i8042 (x86_platform.legacy.i8042 equals X86_LEGACY_I8042_PLATFORM_ABSENT).
Reported-and-tested-by: NTakashi Iwai <tiwai@suse.de>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Cc: linux-input@vger.kernel.org
Link: http://lkml.kernel.org/r/1481317061-31486-3-git-send-email-dmitry.torokhov@gmail.comSigned-off-by: NThomas Gleixner <tglx@linutronix.de>

We rely on the result of scanning PNP bus for keyboard and mouse devices to
decide whether we should continue initialization of i8042 driver or not, so
the probes can not be asynchronous.

Also, it is not a good idea to unbind either of the PNP devices while i8042
is running, so let's disable bind/unbind for the PNP drivers through sysfs
and rely on i8042 cleaning after itself properly. User can still unbind and
rebind entire i8042 and that will take care of PNP drivers as well.
Reviewed-by: NLuis R. Rodriguez <mgrof@kernel.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Avoid AUX loopback in Pegatron C15B touchpad, so input subsystem is able
to recognize a Synaptics touchpad in the AUX port.

Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=93791
(Touchpad is not detected on DNS 0801480 notebook (PEGATRON C15B))
Suggested-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

As this define check if huge, this makes easier to read the code.
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Instead of relying on this model zoo let's skip selftest on all newer Asus
laptops (newer as in when they changed "Computer" -> "COMPUTER" in their
DMI data).
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The Schenker XMG C504 is a rebranded Gigabyte P35 v2 laptop.
Therefore it also needs a keyboard reset to detect the Elantech touchpad.
Otherwise the touchpad appears to be dead.

With this patch the touchpad is detected:

$ dmesg | grep -E "(i8042|Elantech|elantech)"

[    2.675399] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
[    2.680372] i8042: Attempting to reset device connected to KBD port
[    2.789037] serio: i8042 KBD port at 0x60,0x64 irq 1
[    2.791586] serio: i8042 AUX port at 0x60,0x64 irq 12
[    2.813840] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4
[    3.811431] psmouse serio1: elantech: assuming hardware version 4 (with firmware version 0x361f0e)
[    3.825424] psmouse serio1: elantech: Synaptics capabilities query result 0x00, 0x15, 0x0f.
[    3.839424] psmouse serio1: elantech: Elan sample query result 03, 58, 74
[    3.911349] input: ETPS/2 Elantech Touchpad as /devices/platform/i8042/serio1/input/input6
Signed-off-by: NPatrick Scheuring <patrick.scheuring.dev@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

On suspend/resume cycle, selftest is executed to reset i8042 controller.
But when this is done in Asus devices, subsequent calls to detect/init
functions to elantech driver fails. Skipping selftest fixes this problem.

An easier step to reproduce this problem is adding i8042.reset=1 as a
kernel parameter. On Asus laptops, it'll make the system to start with the
touchpad already stuck, since psmouse_probe forcibly calls the selftest
function.

This patch was inspired by John Hiesey's change[1], but, since this problem
affects a lot of models of Asus, let's avoid running selftests on them.

All models affected by this problem:
A455LD
K401LB
K501LB
K501LX
R409L
V502LX
X302LA
X450LCP
X450LD
X455LAB
X455LDB
X455LF
Z450LA

[1]: https://marc.info/?l=linux-input&m=144312209020616&w=2

Fixes: "ETPS/2 Elantech Touchpad dies after resume from suspend"
(https://bugzilla.kernel.org/show_bug.cgi?id=107971)
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Without i8042.nomux=1 the Elantech touch pad is not working at all on
a Fujitsu Lifebook U745. This patch does not seem necessary for all
U745 (maybe because of different BIOS versions?). However, it was
verified that the patch does not break those (see opensuse bug 883192:
https://bugzilla.opensuse.org/show_bug.cgi?id=883192).
Signed-off-by: NAurélien Francillon <aurelien@francillon.net>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Without this the aux port does not get detected, and consequently the touchpad
will not work.

With this patch the touchpad is detected:

$ dmesg | grep -E "(SYN|i8042|serio)"
pnp 00:03: Plug and Play ACPI device, IDs SYN1d22 PNP0f13 (active)
i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at 0x60,0x64 irq 1,12
serio: i8042 KBD port at 0x60,0x64 irq 1
serio: i8042 AUX port at 0x60,0x64 irq 12
input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input4
psmouse serio1: synaptics: Touchpad model: 1, fw: 8.1, id: 0x1e2b1, caps: 0xd00123/0x840300/0x126800, board id: 2863, fw id: 1473085
input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input6

dmidecode excerpt for this laptop is:

Handle 0x0001, DMI type 1, 27 bytes
System Information
        Manufacturer: Medion
        Product Name: Akoya E7225
        Version: 1.0

Cc: stable@vger.kernel.org
Signed-off-by: NJochen Hein <jochen@jochen.org>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

When KBC is in active multiplexing mode the touchpad on this laptop does
not work.
Reported-by: NBilal Koc <koc.bilo@googlemail.com>
Cc: stable@vger.kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

On some laptops, keyboard needs to be reset in order to successfully detect
touchpad (e.g., some Gigabyte laptop models with Elantech touchpads).
Without resettin keyboard touchpad pretends to be completely dead.

Based on the original patch by Mateusz Jończyk this version has been
expanded to include DMI based detection & application of the fix
automatically on the affected models of laptops. This has been confirmed to
fix problem by three users already on three different models of laptops.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81331
Cc: stable@vger.kernel.org
Signed-off-by: NSrihari Vijayaraghavan <linux.bug.reporting@gmail.com>
Acked-by: NMateusz Jończyk <mat.jonczyk@o2.pl>
Tested-by: NSrihari Vijayaraghavan <linux.bug.reporting@gmail.com>
Tested by: Zakariya Dehlawi <zdehlawi@gmail.com>
Tested-by: NGuillaum Bouchard <guillaum.bouchard@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The Intel NUC D54250WYK has no PS/2 controller, however the DSDT declares
PS/2 devices which trigger the loading of the i8042 driver.
Signed-off-by: NTodor Minchev <todor.minchev@intel.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This reverts commit 68da1664.

It turns out that the assertion about scope of regressions due to
always keeping keyboard controller in legacy mode was proven wrong.
There are laptops, such as Clevo W650SH, that only have internal
touchpad (no external PS/2 ports), that require active multiplexing
mode to switch the touchpad (Elantech) into native mode instead of
basic PS/2 emulation.
Reported-by: NRoel Aaij <roel.aaij@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

These models need i8042.notimeout, otherwise the touchpad will not work.

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=69731
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1111138
Cc: stable@vger.kernel.org
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Active multiplexing is a nice feature as it allows several pointing devices
(such as touchpad and external mouse) use their native protocols at the
same time. Unfortunately many manufacturers do not implement the feature
properly even though they advertise it. The problematic implementations are
never fixed, since Windows by default does not use this mode, and move from
one BIOS/model of laptop to another. When active multiplexing is broken
turning it on usually results in touchpad, keyboard, or both unresponsive.

With PS/2 usage on decline (most of PS/2 devices in use nowadays are
internal laptop touchpads), I expect number of users who have laptops with
working MUX implementation, docking stations with external PS/2 ports, and
who are still using external PS/2 mice, to be rather small. Let's flip the
default to be OFF and allow activating it through i8042.nomux=0 kernel
option.  We'll also keep DMI table where we can record known good models.
Acked-by: NJiri Kosina <jkosina@suse.cz>
Acked-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Without this the aux port does not get detected, and consequently the
touchpad will not work.

https://bugzilla.redhat.com/show_bug.cgi?id=1110011

Cc: stable@vger.kernel.org
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

We need to add this module to the nomux table to be able to detect the
touchpad.

Cc: stablevger.kernel.org
Signed-off-by: NMarcos Paulo de Souza <marcos.souza.org@gmail.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

The sys_vendor / product_name are somewhat generic unfortunately, so this
may lead to some false positives. But nomux usually does no harm, where as
not having it clearly is causing problems on the Avatar AVIU-145A6.

https://bugzilla.kernel.org/show_bug.cgi?id=77391

Cc: stable@vger.kernel.org
Reported-by: NHugo P <saurosii@gmail.com>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

https://bugzilla.kernel.org/show_bug.cgi?id=69731

Cc: stable@vger.kernel.org
Reported-by: NJason Robinson <mail@jasonrobinson.me>
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Acer Aspire needs to be added to nomux blacklist, otherwise the touchpad
misbehaves rather randomly.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Fill in the new serio firmware_id sysfs attribute for pnp instantiated
8042 serio ports.
Signed-off-by: NHans de Goede <hdegoede@redhat.com>
Acked-by: NPeter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

This allows the module to be autoloaded in the common case.

In order to work on non-PnP systems the module should be compiled in or
loaded unconditionally at boot (c.f. modules-load.d(5)), as before.
Signed-off-by: NTom Gundersen <teg@jklm.no>
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

Some MSI laptop BIOSes are broken - INT 15h code uses port 92h to enable A20
line but resume code assumes that KBC was used.
The laptop will not resume from S3 otherwise but powers off after a while
and then powers on again stuck with a blank screen.

Fix it by enabling A20 using KBC in i8042_platform_init for x86.

Fixes https://bugzilla.kernel.org/show_bug.cgi?id=12878Signed-off-by: NOndrej Zary <linux@rainbow-software.org>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/201212112218.06551.linux@rainbow-software.orgSigned-off-by: NH. Peter Anvin <hpa@linux.intel.com>

On Toshiba Satellite C850D, the touchpad and the keyboard might randomly
not work at boot. Preventing MUX mode activation solves this issue.
Signed-off-by: NAnisse Astier <anisse@astier.eu>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

They all define their chassis type as "Other" and therefore are not
categorized as "laptops" by the driver, which tries to perform AUX IRQ
delivery test which fails and causes touchpad not working.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=42620
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dmitry.torokhov@gmail.com>

From 2d5a38a56453421e82428155f4b00303f3fb19b2 Mon Sep 17 00:00:00 2001
From: Igor Murzov <e-mail@date.by>
Date: Wed, 1 Feb 2012 03:11:53 +0400
Subject: [PATCH] Input: i8042 - add Lenovo Ideapad U455 to 'reset' blacklist

Lenovo Ideapad U455 needs to be in the reset quirk list for its
touchpad's proper function.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=40672Signed-off-by: NIgor Murzov <e-mail@date.by>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Touchpad input doesn't work with newer HP Pavilion dv4 laptops due to bad i8042
timeout data.  Booting with i8042.notimeout and i8042.nomux successfully works
around the problem.

This patch adds the devices to the i8042 notimeout and nomux blacklists.
Signed-off-by: NTomas Miljenovic <TomasM@tomasm.tk>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

i8042 controller present in Dell Vostro V13 errorneously signals spurious
timeouts.

Introduce i8042.notimeout parameter for ignoring i8042-signalled timeouts
and apply this quirk automatically for Dell Vostro V13, based on DMI match.

In addition to that, this machine also needs to be added to nomux blacklist.
Signed-off-by: NJiri Kosina <jkosina@suse.cz>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

This patch adds notebook Acer Aspire 5100 to the list of Dritek HW. Acer
Aspire 5100 needs Dritek keyboard extension to support all Fn keys.
Signed-off-by: NPali Rohár <pali.rohar@gmail.com>
Tested-by: NPali Rohár <pali.rohar@gmail.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Standardized message logging prefixes.
Removed \n from dbg macro, added \n to each dbg call site.
Removed direct use of __FILE__ from dbg, converted to pr_fmt(fmt)
Added non-debug printf argument verification of dbg calls
Removed "i8042.c" from printks, converted to pr_<level>
Signed-off-by: NJoe Perches <joe@perches.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

The Sony VPCZ1 doesn't support active multiplexing and trying to enable
it causes keyboard to stop working. Since most (all?) VAIOs do not have
external PS/2 ports nor they implement active multiplexing properly, and
trying to enable MUX usually messes up keyboard/touchpad, let's simply
disable MUX probing based on board name (VAIO).
Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Gigabyte "Spring Peak" notebook indicates wrong chassis-type, tripping up
i8042 and breaking the touchpad.  Add this model to i8042_dmi_noloop_table[]
to resolve.

BugLink: https://bugs.launchpad.net/bugs/580664Signed-off-by: NKamal Mostafa <kamal@canonical.com>
Cc: stable@kernel.org
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>

Then it will first check x86_platforms's i8042 detection result,
then go on with normal probe.
Signed-off-by: NFeng Tang <feng.tang@intel.com>
LKML-Reference: <4c34dd482753bb8f1@agluck-desktop.sc.intel.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
Acked-by: NDmitry Torokhov <dtor@mail.ru>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>

Windows checks for an ALPS PS/2 device in PNP. Add it on the off-chance
that there's a machine that expresses this without also providing a
compatibility ID.
Signed-off-by: NMatthew Garrett <mjg@redhat.com>
Signed-off-by: NDmitry Torokhov <dtor@mail.ru>