EC Backlight Driver for Hybrid Graphics Notebook Systems

modulename: nvidia-wmi-ec-backlight.ko

configname: CONFIG_NVIDIA_WMI_EC_BACKLIGHT

Linux Kernel Configuration
└─>Device Drivers
└─>X86 Platform Specific Device Drivers
└─>EC Backlight Driver for Hybrid Graphics Notebook Systems
In linux kernel since version 5.2 (release Date: 2019-07-07)  
This driver provides a sysfs backlight interface for notebook systems
which are equipped with NVIDIA hybrid graphics and drive LCD backlight
levels through the Embedded Controller (EC).

Say Y or M here if you want to control the backlight on a notebook
system with an EC-driven backlight.

If you choose to compile this driver as a module the module will be
called nvidia-wmi-ec-backlight.

source code: