Unverified Commit cfd84b3f authored Apr 25, 2025 by Werner Sembach Committed by Ilpo Järvinen May 08, 2025

platform/x86/tuxedo: Add virtual LampArray for TUXEDO NB04 devices

The TUXEDO Sirius 16 Gen1 and TUXEDO Sirius 16 Gen2 devices have a per-key
controllable RGB keyboard backlight. The firmware API for it is implemented
via WMI.

To make the backlight userspace configurable this driver emulates a
LampArray HID device and translates the input from hidraw to the
corresponding WMI calls. This is a new approach as the leds subsystem lacks
a suitable UAPI for per-key keyboard backlights, and like this no new UAPI
needs to be established.

The handle_* functions an corresponding structs are named based on the HID
spec: HID Usage Tables 1.6 -> 26 Lighting And Illumination Page (0x59)

Signed-off-by: Werner Sembach <wse@tuxedocomputers.com>
Link: https://lore.kernel.org/r/20250425210043.342288-2-wse@tuxedocomputers.com

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>

parent feea7bd6

MAINTAINERS

+6 −0

Original line number	Diff line number	Diff line
		@@ -24642,6 +24642,12 @@ T: git git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux.git turbostat
		F: tools/power/x86/turbostat/
		F: tools/testing/selftests/turbostat/

		TUXEDO DRIVERS
		M: Werner Sembach <wse@tuxedocomputers.com>
		L: platform-driver-x86@vger.kernel.org
		S: Supported
		F: drivers/platform/x86/tuxedo/

		TW5864 VIDEO4LINUX DRIVER
		M: Bluecherry Maintainers <maintainers@bluecherrydvr.com>
		M: Andrey Utkin <andrey.utkin@corp.bluecherry.net>

drivers/platform/x86/Kconfig

+2 −0

Original line number	Diff line number	Diff line
		@@ -1224,6 +1224,8 @@ config OXP_EC
		reasons, this driver also provides hwmon functionality to Ayaneo
		devices and the OrangePi Neo.

		source "drivers/platform/x86/tuxedo/Kconfig"

		endif # X86_PLATFORM_DEVICES

		config P2SB

drivers/platform/x86/Makefile

+3 −0

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		@@ -152,6 +152,9 @@ obj-$(CONFIG_SIEMENS_SIMATIC_IPC) += siemens/
		# Silicom
		obj-$(CONFIG_SILICOM_PLATFORM) += silicom-platform.o

		# TUXEDO
		obj-y += tuxedo/

		# Winmate
		obj-$(CONFIG_WINMATE_FM07_KEYS) += winmate-fm07-keys.o

drivers/platform/x86/tuxedo/Kconfig

0 → 100644

+8 −0

Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-or-later
		#
		# Copyright (C) 2024-2025 Werner Sembach wse@tuxedocomputers.com
		#
		# TUXEDO X86 Platform Specific Drivers
		#

		source "drivers/platform/x86/tuxedo/nb04/Kconfig"

drivers/platform/x86/tuxedo/Makefile

0 → 100644

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Original line number	Diff line number	Diff line
		# SPDX-License-Identifier: GPL-2.0-or-later
		#
		# Copyright (C) 2024-2025 Werner Sembach wse@tuxedocomputers.com
		#
		# TUXEDO X86 Platform Specific Drivers
		#

		obj-y += nb04/