145c2818fSMarek BehúnWhat: /sys/class/leds/<led>/device/brightness 245c2818fSMarek BehúnDate: July 2020 345c2818fSMarek BehúnKernelVersion: 5.9 4b37c3848SMarek BehúnContact: Marek Behún <kabel@kernel.org> 545c2818fSMarek BehúnDescription: (RW) On the front panel of the Turris Omnia router there is also 645c2818fSMarek Behún a button which can be used to control the intensity of all the 745c2818fSMarek Behún LEDs at once, so that if they are too bright, user can dim them. 845c2818fSMarek Behún 945c2818fSMarek Behún The microcontroller cycles between 8 levels of this global 1045c2818fSMarek Behún brightness (from 100% to 0%), but this setting can have any 1145c2818fSMarek Behún integer value between 0 and 100. It is therefore convenient to be 1245c2818fSMarek Behún able to change this setting from software. 1345c2818fSMarek Behún 1445c2818fSMarek Behún Format: %i 15*43e9082fSMarek Behún 16*43e9082fSMarek BehúnWhat: /sys/class/leds/<led>/device/gamma_correction 17*43e9082fSMarek BehúnDate: August 2023 18*43e9082fSMarek BehúnKernelVersion: 6.6 19*43e9082fSMarek BehúnContact: Marek Behún <kabel@kernel.org> 20*43e9082fSMarek BehúnDescription: (RW) Newer versions of the microcontroller firmware of the 21*43e9082fSMarek Behún Turris Omnia router support gamma correction for the RGB LEDs. 22*43e9082fSMarek Behún This feature can be enabled/disabled by writing to this file. 23*43e9082fSMarek Behún 24*43e9082fSMarek Behún If the feature is not supported because the MCU firmware is too 25*43e9082fSMarek Behún old, the file always reads as 0, and writing to the file results 26*43e9082fSMarek Behún in the EOPNOTSUPP error. 27*43e9082fSMarek Behún 28*43e9082fSMarek Behún Format: %i 29