kernel/linux.git/drivers/platform/x86/uniwill, branch linux-7.1.y

platform/x86: uniwill-laptop: Do not enable the charging limit even when forced

2026-05-19T13:52:49+00:00

It seems that on some older models (~2020) the battery charging limit can permanently damage the battery. Prevent users from enabling this feature thru the "force" module parameter to avoid causing permanent hardware damage on such devices. Fixes: d050479693bb ("platform/x86: Add Uniwill laptop driver") Link: https://www.reddit.com/r/XMG_gg/comments/ld9yyf/battery_limit_hidden_function_discovered_on/ Reviewed-by: Werner Sembach Reviewed-by: Ilpo Järvinen Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260512232145.329260-5-W_Armin@gmx.de Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Fix behavior of "force" module param

2026-05-19T13:52:47+00:00

Users might want to force-enable all possible features even on machines with a valid device descriptor. Until now the "force" module param was ignored on such machines. Fix this to make it easier to test for support of new features. Fixes: d050479693bb ("platform/x86: Add Uniwill laptop driver") Reviewed-by: Werner Sembach Reviewed-by: Ilpo Järvinen Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260512232145.329260-4-W_Armin@gmx.de Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Accept charging threshold of 0

2026-05-19T13:52:46+00:00

The power supply sysfs ABI states that: Not all hardware is capable of setting this to an arbitrary percentage. Drivers will round written values to the nearest supported value. Reading back the value will show the actual threshold set by the driver. The driver currently violates this ABI by rejecting a charging threshold of 0. Fix this by clamping this value to 1. Fixes: d050479693bb ("platform/x86: Add Uniwill laptop driver") Reviewed-by: Werner Sembach Reviewed-by: Ilpo Järvinen Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260512232145.329260-3-W_Armin@gmx.de Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Properly initialize charging threshold

2026-05-19T13:52:43+00:00

The EC might initialize the charge threshold with 0 to signal that said threshold is uninitialized. Detect this and replace said value with 100 to signal the EC that we want to take control of battery charging. Also set the threshold to 100 if the EC-provided value is invalid. Fixes: d050479693bb ("platform/x86: Add Uniwill laptop driver") Reviewed-by: Werner Sembach Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260512232145.329260-2-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/wmi: Replace .no_notify_data with .min_event_size

2026-04-13T11:11:27+00:00

WMI drivers using the buffer-based WMI API are expected to reject undersized event payloads. Extend the WMI driver core to allow such drivers to specify their minimum supported event payload size. Also remove the now redundant .no_notify_data field. Signed-off-by: Armin Wolf Link: https://patch.msgid.link/20260406203237.2970-7-W_Armin@gmx.de Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Fix signedness bug

2026-04-09T12:01:11+00:00

The function sysfs_match_string() can return negative error codes and the variable assigned to it is the enum 'option'. Which could be an unsigned int due to different compiler implementations. Assign signed variable 'ret' to sysfs_match_string(), check for error, then assign ret to option. Detected by Smatch: drivers/platform/x86/uniwill/uniwill-acpi.c:919 usb_c_power_priority_store() warn: unsigned 'option' is never less than zero. Fixes: 03ae0a0d0973b ("platform/x86: uniwill-laptop: Implement USB-C power priority setting") Signed-off-by: Ethan Tidmore Link: https://patch.msgid.link/20260403070928.802196-1-ethantidmore06@gmail.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Apply features across all TUXEDO devices

2026-03-31T14:27:30+00:00

Uses the more fine granular and/or new feature defines to enable more features across the TUXEDO device lineup. Also adds features to TUXEDO devices that where already present in the driver, but not tested until now. Reviewed-by: Armin Wolf Signed-off-by: Werner Sembach Link: https://patch.msgid.link/20260324203413.454361-5-wse@tuxedocomputers.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Fix XMG Fusion 15 (L19) entries

2026-03-31T14:27:29+00:00

Add alternative XMG Fusion system vendor name and clarify edition in ident. Reviewed-by: Armin Wolf Signed-off-by: Werner Sembach Link: https://patch.msgid.link/20260324203413.454361-4-wse@tuxedocomputers.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Implement USB-C power priority setting

2026-03-31T14:27:26+00:00

On some devices Uniwill offers the option to set the USB-C port to prioritise charging or performance. This patch exposes this setting to the userspace via sysfs for all TUXEDO devices supporting it. Reviewed-by: Armin Wolf Signed-off-by: Werner Sembach Link: https://patch.msgid.link/20260324203413.454361-3-wse@tuxedocomputers.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen

platform/x86: uniwill-laptop: Rework hwmon feature defines

2026-03-31T14:27:24+00:00

Split hwmon feature define in smaller parts to accommodate for diverse hardware. You can now specify the presence of a cpu and/or a gpu temp sensor separately and if one or 2 fans exists. Signed-off-by: Armin Wolf Reviewed-by: Werner Sembach Tested-by: Werner Sembach Signed-off-by: Werner Sembach Link: https://patch.msgid.link/20260324203413.454361-2-wse@tuxedocomputers.com Reviewed-by: Ilpo Järvinen Signed-off-by: Ilpo Järvinen