1What: /sys/bus/platform/devices/VPC2004:*/camera_power 2Date: Dec 2010 3KernelVersion: 2.6.37 4Contact: "Ike Panhc <ike.pan@canonical.com>" 5Description: 6 Control the power of camera module. 1 means on, 0 means off. 7 8What: /sys/bus/platform/devices/VPC2004:*/fan_mode 9Date: June 2012 10KernelVersion: 3.6 11Contact: "Maxim Mikityanskiy <maxtram95@gmail.com>" 12Description: 13 Change fan mode 14 There are four available modes: 15 16 * 0 -> Super Silent Mode 17 * 1 -> Standard Mode 18 * 2 -> Dust Cleaning 19 * 4 -> Efficient Thermal Dissipation Mode 20 21What: /sys/bus/platform/devices/VPC2004:*/touchpad 22Date: May 2017 23KernelVersion: 4.13 24Contact: "Ritesh Raj Sarraf <rrs@debian.org>" 25Description: 26 Control touchpad mode. 27 * 1 -> Switched On 28 * 0 -> Switched Off 29 30What: /sys/bus/platform/devices/VPC2004:*/conservation_mode 31Date: Aug 2017 32KernelVersion: 4.14 33Contact: platform-driver-x86@vger.kernel.org 34Description: 35 Controls whether the conservation mode is enabled or not. 36 This feature limits the maximum battery charge percentage to 37 around 50-60% in order to prolong the lifetime of the battery. 38 39What: /sys/bus/platform/devices/VPC2004:*/fn_lock 40Date: May 2018 41KernelVersion: 4.18 42Contact: "Oleg Keri <ezhi99@gmail.com>" 43Description: 44 Control fn-lock mode. 45 46 * 1 -> Switched On 47 * 0 -> Switched Off 48 49 For example:: 50 51 # echo "0" > \ 52 /sys/bus/pci/devices/0000:00:1f.0/PNP0C09:00/VPC2004:00/fn_lock 53 54What: /sys/bus/platform/devices/VPC2004:*/usb_charging 55Date: Feb 2021 56KernelVersion: 5.12 57Contact: platform-driver-x86@vger.kernel.org 58Description: 59 Controls whether the "always on USB charging" feature is 60 enabled or not. This feature enables charging USB devices 61 even if the computer is not turned on. 62