| Corentin Chary | 5f634c6 | 2009-08-28 12:56:45 +0000 | [diff] [blame] | 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 | |
| 11 | What: /sys/class/leds/<led>/max_brightness |
| 12 | Date: March 2006 |
| 13 | KernelVersion: 2.6.17 |
| 14 | Contact: Richard Purdie <rpurdie@rpsys.net> |
| 15 | Description: |
| 16 | Maximum brightness level for this led, default is 255 (LED_FULL). |
| 17 | |
| 18 | What: /sys/class/leds/<led>/trigger |
| 19 | Date: March 2006 |
| 20 | KernelVersion: 2.6.17 |
| 21 | Contact: Richard Purdie <rpurdie@rpsys.net> |
| 22 | Description: |
| 23 | Set the trigger for this LED. A trigger is a kernel based source |
| 24 | of led events. |
| 25 | You can change triggers in a similar manner to the way an IO |
| 26 | scheduler is chosen. Trigger specific parameters can appear in |
| 27 | /sys/class/leds/<led> once a given trigger is selected. |
| 28 | |
| Janusz Krzysztofik | 9f9455a | 2011-01-12 16:59:20 -0800 | [diff] [blame] | 29 | What: /sys/class/leds/<led>/inverted |
| 30 | Date: January 2011 |
| 31 | KernelVersion: 2.6.38 |
| 32 | Contact: Richard Purdie <rpurdie@rpsys.net> |
| 33 | Description: |
| 34 | Invert the LED on/off state. This parameter is specific to |
| 35 | gpio and backlight triggers. In case of the backlight trigger, |
| Lucas De Marchi | 25985ed | 2011-03-30 22:57:33 -0300 | [diff] [blame] | 36 | it is useful when driving a LED which is intended to indicate |
| Janusz Krzysztofik | 9f9455a | 2011-01-12 16:59:20 -0800 | [diff] [blame] | 37 | a device in a standby like state. |