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Sebastian Reichel
60b7ab6ce0
Introduce EC driver for the ThinkPad T14s Gen6 Snapdragon, which is in theory compatible with ThinkPad ACPI. On Linux the system is booted with device tree, which is not supported by the ThinkPad ACPI driver (drivers/platform/x86/lenovo/thinkpad_acpi.c). Also most of the hardware compatibility is handled via ACPI tables, which are obviously not used when booting via device tree. Thus adding DT compatibility to the existing driver is not worth it as there is almost no code sharing. The driver currently exposes features, which are not available via other means: * Extra Keys * System LEDs * Keyboard Backlight Control The driver has been developed by reading the ACPI DSDT. There are some more features around thermal control, which are not yet supported by the driver. The speaker mute and mic mute LEDs need some additional changes in the ALSA UCM to be set automatically. Tested-by: Neil Armstrong <[email protected]> # on Thinkpad T14S OLED Reviewed-by: Bryan O'Donoghue <[email protected]> Signed-off-by: Sebastian Reichel <[email protected]> Link: https://patch.msgid.link/[email protected] [ij: folded in patch from Chen Ni <[email protected]>] Link: https://patch.msgid.link/[email protected] [ij: folded in patch from Lukas Bulwahn <[email protected]>] Link: https://patch.msgid.link/[email protected] Reviewed-by: Ilpo Järvinen <[email protected]> Signed-off-by: Ilpo Järvinen <[email protected]>