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alistair23-linux/drivers/platform
Jiaxun Yang 9c301133be platform/x86: ideapad-laptop: Disable touchpad_switch for ELAN0634
commit f419e5940f upstream.

Newer ideapads (e.g.: Yoga 14s, 720S 14) come with ELAN0634 touchpad do not
use EC to switch touchpad.

Reading VPCCMD_R_TOUCHPAD will return zero thus touchpad may be blocked
unexpectedly.
Writing VPCCMD_W_TOUCHPAD may cause a spurious key press.

Add has_touchpad_switch to workaround these machines.

Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: stable@vger.kernel.org # 5.4+
--
v2: Specify touchpad to ELAN0634
v3: Stupid missing ! in v2
v4: Correct acpi_dev_present usage (Hans)
Link: https://lore.kernel.org/r/20210107144438.12605-1-jiaxun.yang@flygoat.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-01-27 11:47:39 +01:00
..
chrome platform/chrome: cros_ec_spi: Don't overwrite spi::mode 2020-12-30 11:51:23 +01:00
goldfish treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
mellanox platform/mellanox: fix potential deadlock in the tmfifo driver 2020-01-17 19:48:42 +01:00
mips MIPS: Loongson: Fix return value of loongson_hwmon_init 2020-01-17 19:48:55 +01:00
olpc Platform: OLPC: Fix memleak in olpc_ec_probe 2020-10-14 10:32:58 +02:00
x86 platform/x86: ideapad-laptop: Disable touchpad_switch for ELAN0634 2021-01-27 11:47:39 +01:00
Kconfig platform-drivers-x86 for v5.3-1 2019-07-14 16:51:47 -07:00
Makefile Platform: OLPC: Add XO-1.75 EC driver 2019-05-20 17:27:08 +03:00