sysfs-driver-samsung-laptop 1.8 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748
  1. What: /sys/devices/platform/samsung/performance_level
  2. Date: January 1, 2010
  3. KernelVersion: 2.6.33
  4. Contact: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  5. Description: Some Samsung laptops have different "performance levels"
  6. that can be modified by a function key, and by this
  7. sysfs file. These values don't always make a whole lot
  8. of sense, but some users like to modify them to keep
  9. their fans quiet at all costs. Reading from this file
  10. will show the current performance level. Writing to the
  11. file can change this value.
  12. Valid options:
  13. - "silent"
  14. - "normal"
  15. - "overclock"
  16. Note that not all laptops support all of these options.
  17. Specifically, not all support the "overclock" option,
  18. and it's still unknown if this value even changes
  19. anything, other than making the user feel a bit better.
  20. What: /sys/devices/platform/samsung/battery_life_extender
  21. Date: December 1, 2011
  22. KernelVersion: 3.3
  23. Contact: Corentin Chary <corentin.chary@gmail.com>
  24. Description: Max battery charge level can be modified, battery cycle
  25. life can be extended by reducing the max battery charge
  26. level.
  27. - 0 means normal battery mode (100% charge)
  28. - 1 means battery life extender mode (80% charge)
  29. What: /sys/devices/platform/samsung/usb_charge
  30. Date: December 1, 2011
  31. KernelVersion: 3.3
  32. Contact: Corentin Chary <corentin.chary@gmail.com>
  33. Description: Use your USB ports to charge devices, even
  34. when your laptop is powered off.
  35. 1 means enabled, 0 means disabled.
  36. What: /sys/devices/platform/samsung/lid_handling
  37. Date: December 11, 2014
  38. KernelVersion: 3.19
  39. Contact: Julijonas Kikutis <julijonas.kikutis@gmail.com>
  40. Description: Some Samsung laptops handle lid closing quicker and
  41. only handle lid opening with this mode enabled.
  42. 1 means enabled, 0 means disabled.