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/Documentation/ABI/testing/sysfs-class-led

https://bitbucket.org/abioy/linux
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Possible License(s): CC-BY-SA-3.0, GPL-2.0, LGPL-2.0, AGPL-1.0
  1. What: /sys/class/leds/<led>/brightness
  2. Date: March 2006
  3. KernelVersion: 2.6.17
  4. Contact: Richard Purdie <rpurdie@rpsys.net>
  5. Description:
  6. Set the brightness of the LED. Most LEDs don't
  7. have hardware brightness support so will just be turned on for
  8. non-zero brightness settings. The value is between 0 and
  9. /sys/class/leds/<led>/max_brightness.
  10. What: /sys/class/leds/<led>/max_brightness
  11. Date: March 2006
  12. KernelVersion: 2.6.17
  13. Contact: Richard Purdie <rpurdie@rpsys.net>
  14. Description:
  15. Maximum brightness level for this led, default is 255 (LED_FULL).
  16. What: /sys/class/leds/<led>/trigger
  17. Date: March 2006
  18. KernelVersion: 2.6.17
  19. Contact: Richard Purdie <rpurdie@rpsys.net>
  20. Description:
  21. Set the trigger for this LED. A trigger is a kernel based source
  22. of led events.
  23. You can change triggers in a similar manner to the way an IO
  24. scheduler is chosen. Trigger specific parameters can appear in
  25. /sys/class/leds/<led> once a given trigger is selected.