linux-uconsole/drivers/input/serio
Kevin Locke 4bbb5ab66c Input: i8042 - add ThinkPad S230u to i8042 reset list
[ Upstream commit 2712c91a54 ]

On the Lenovo ThinkPad Twist S230u (3347-4HU) with BIOS version
"GDETC1WW (1.81 ) 06/27/2019", the keyboard, Synaptics TouchPad, and
TrackPoint either do not function or stop functioning a few minutes
after boot.  This problem has been noted before, perhaps only occurring
with BIOS 1.57 and later.[1][2][3][4][5]

Odds of a BIOS fix appear to be low: 1.57 was released over 6 years ago
and although the [BIOS changelog] notes "Fixed an issue of UEFI
touchpad/trackpoint/keyboard/touchscreen" in 1.58, it appears to be
insufficient.

Setting i8042.reset=1 or adding 33474HU to the reset list avoids the
issue on my system from either warm or cold boot.

[1]: https://bugs.launchpad.net/bugs/1210748
[2]: https://bbs.archlinux.org/viewtopic.php?pid=1360425
[3]: https://forums.linuxmint.com/viewtopic.php?f=46&t=41200
[4]: https://forums.linuxmint.com/viewtopic.php?f=49&t=157115
[5]: https://forums.lenovo.com/topic/findpost/27/1337119
[BIOS changelog]: https://download.lenovo.com/pccbbs/mobiles/gduj33uc.txt

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/94f384b0f75f90f71425d7dce7ac82c59ddb87a8.1587702636.git.kevin@kevinlocke.name
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-06-03 08:19:32 +02:00
..
altera_ps2.c
ambakmi.c
ams_delta_serio.c
apbps2.c
arc_ps2.c
ct82c710.c
gscps2.c parisc: Fix serio address output 2019-12-05 09:19:57 +01:00
hil_mlc.c
hp_sdc.c parisc: Fix HP SDC hpa address output 2019-12-05 09:19:57 +01:00
hp_sdc_mlc.c
hyperv-keyboard.c Input: hyperv-keyboard: Use in-place iterator API in the channel callback 2019-09-10 10:33:49 +01:00
i8042-io.h
i8042-ip22io.h
i8042-jazzio.h
i8042-ppcio.h
i8042-snirm.h
i8042-sparcio.h
i8042-unicore32io.h
i8042-x86ia64io.h Input: i8042 - add ThinkPad S230u to i8042 reset list 2020-06-03 08:19:32 +02:00
i8042.c
i8042.h
Kconfig
libps2.c
maceps2.c
Makefile
olpc_apsp.c
parkbd.c
pcips2.c
ps2-gpio.c
ps2mult.c
q40kbd.c
rpckbd.c
sa1111ps2.c
serio.c
serio_raw.c
serport.c
sun4i-ps2.c
userio.c
xilinx_ps2.c