38 lines
1.3 KiB
Plaintext
38 lines
1.3 KiB
Plaintext
|
What: /sys/class/leds/<led>/brightness
|
||
|
|
Date: March 2006
|
||
|
|
KernelVersion: 2.6.17
|
||
|
|
Contact: Richard Purdie <rpurdie@rpsys.net>
|
||
|
|
Description:
|
||
|
|
Set the brightness of the LED. Most LEDs don't
|
||
|
|
have hardware brightness support so will just be turned on for
|
||
|
|
non-zero brightness settings. The value is between 0 and
|
||
|
|
/sys/class/leds/<led>/max_brightness.
|
||
|
|
|
||
|
|
What: /sys/class/leds/<led>/max_brightness
|
||
|
|
Date: March 2006
|
||
|
|
KernelVersion: 2.6.17
|
||
|
|
Contact: Richard Purdie <rpurdie@rpsys.net>
|
||
|
|
Description:
|
||
|
|
Maximum brightness level for this led, default is 255 (LED_FULL).
|
||
|
|
|
||
|
|
What: /sys/class/leds/<led>/trigger
|
||
|
|
Date: March 2006
|
||
|
|
KernelVersion: 2.6.17
|
||
|
|
Contact: Richard Purdie <rpurdie@rpsys.net>
|
||
|
|
Description:
|
||
|
|
Set the trigger for this LED. A trigger is a kernel based source
|
||
|
|
of led events.
|
||
|
|
You can change triggers in a similar manner to the way an IO
|
||
|
|
scheduler is chosen. Trigger specific parameters can appear in
|
||
|
|
/sys/class/leds/<led> once a given trigger is selected.
|
||
|
|
|
||
|
|
What: /sys/class/leds/<led>/inverted
|
||
|
|
Date: January 2011
|
||
|
|
KernelVersion: 2.6.38
|
||
|
|
Contact: Richard Purdie <rpurdie@rpsys.net>
|
||
|
|
Description:
|
||
|
|
Invert the LED on/off state. This parameter is specific to
|
||
|
|
gpio and backlight triggers. In case of the backlight trigger,
|
||
|
|
it is useful when driving a LED which is intended to indicate
|
||
|
|
a device in a standby like state.
|