What: /sys/class/leds/<led>/device/brightness Date: July 2020 KernelVersion: 5.9 Contact: Marek BehĂșn <kabel@kernel.org> Description: (RW) On the front panel of the Turris Omnia router there is also a button which can be used to control the intensity of all the LEDs at once, so that if they are too bright, user can dim them. The microcontroller cycles between 8 levels of this global brightness (from 100% to 0%), but this setting can have any integer value between 0 and 100. It is therefore convenient to be able to change this setting from software. Format: %i What: /sys/class/leds/<led>/device/gamma_correction Date: August 2023 KernelVersion: 6.6 Contact: Marek BehĂșn <kabel@kernel.org> Description: (RW) Newer versions of the microcontroller firmware of the Turris Omnia router support gamma correction for the RGB LEDs. This feature can be enabled/disabled by writing to this file. If the feature is not supported because the MCU firmware is too old, the file always reads as 0, and writing to the file results in the EOPNOTSUPP error. Format: %i