| 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. |