Documentation/ABI/testing/sysfs-platform-ideapad-laptop

   1 What:           /sys/bus/platform/devices/VPC2004:*/camera_power
   2 Date:           Dec 2010
   3 KernelVersion:  2.6.37
   4 Contact:        "Ike Panhc <ike.pan@canonical.com>"
   5 Description:
   6                 Control the power of camera module. 1 means on, 0 means off.
   7
   8 What:           /sys/bus/platform/devices/VPC2004:*/fan_mode
   9 Date:           June 2012
  10 KernelVersion:  3.6
  11 Contact:        "Maxim Mikityanskiy <maxtram95@gmail.com>"
  12 Description:
  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
  21 What:           /sys/bus/platform/devices/VPC2004:*/touchpad
  22 Date:           May 2017
  23 KernelVersion:  4.13
  24 Contact:        "Ritesh Raj Sarraf <rrs@debian.org>"
  25 Description:
  26                 Control touchpad mode.
  27                         * 1 -> Switched On
  28                         * 0 -> Switched Off
  29
  30 What:           /sys/bus/platform/devices/VPC2004:*/conservation_mode
  31 Date:           Aug 2017
  32 KernelVersion:  4.14
  33 Contact:        platform-driver-x86@vger.kernel.org
  34 Description:
  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
  39 What:           /sys/bus/platform/devices/VPC2004:*/fn_lock
  40 Date:           May 2018
  41 KernelVersion:  4.18
  42 Contact:        "Oleg Keri <ezhi99@gmail.com>"
  43 Description:
  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
  54 What:           /sys/bus/platform/devices/VPC2004:*/usb_charging
  55 Date:           Feb 2021
  56 KernelVersion:  5.12
  57 Contact:        platform-driver-x86@vger.kernel.org
  58 Description:
  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.