| Gabriele Mazzotta | 6cff8d6 | 2015-02-19 11:58:29 +0100 | [diff] [blame] | 1 | What: /sys/class/leds/dell::kbd_backlight/als_enabled |
| 2 | Date: December 2014 |
| 3 | KernelVersion: 3.19 |
| 4 | Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>, |
| 5 | Pali Rohár <pali.rohar@gmail.com> |
| 6 | Description: |
| 7 | This file allows to control the automatic keyboard |
| 8 | illumination mode on some systems that have an ambient |
| 9 | light sensor. Write 1 to this file to enable the auto |
| 10 | mode, 0 to disable it. |
| 11 | |
| 12 | What: /sys/class/leds/dell::kbd_backlight/als_setting |
| 13 | Date: December 2014 |
| 14 | KernelVersion: 3.19 |
| 15 | Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>, |
| 16 | Pali Rohár <pali.rohar@gmail.com> |
| 17 | Description: |
| 18 | This file allows to specifiy the on/off threshold value, |
| 19 | as reported by the ambient light sensor. |
| 20 | |
| 21 | What: /sys/class/leds/dell::kbd_backlight/start_triggers |
| 22 | Date: December 2014 |
| 23 | KernelVersion: 3.19 |
| 24 | Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>, |
| 25 | Pali Rohár <pali.rohar@gmail.com> |
| 26 | Description: |
| 27 | This file allows to control the input triggers that |
| 28 | turn on the keyboard backlight illumination that is |
| 29 | disabled because of inactivity. |
| 30 | Read the file to see the triggers available. The ones |
| 31 | enabled are preceded by '+', those disabled by '-'. |
| 32 | |
| 33 | To enable a trigger, write its name preceded by '+' to |
| 34 | this file. To disable a trigger, write its name preceded |
| 35 | by '-' instead. |
| 36 | |
| 37 | For example, to enable the keyboard as trigger run: |
| 38 | echo +keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers |
| 39 | To disable it: |
| 40 | echo -keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers |
| 41 | |
| 42 | Note that not all the available triggers can be configured. |
| 43 | |
| 44 | What: /sys/class/leds/dell::kbd_backlight/stop_timeout |
| 45 | Date: December 2014 |
| 46 | KernelVersion: 3.19 |
| 47 | Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>, |
| 48 | Pali Rohár <pali.rohar@gmail.com> |
| 49 | Description: |
| 50 | This file allows to specify the interval after which the |
| 51 | keyboard illumination is disabled because of inactivity. |
| 52 | The timeouts are expressed in seconds, minutes, hours and |
| 53 | days, for which the symbols are 's', 'm', 'h' and 'd' |
| 54 | respectively. |
| 55 | |
| 56 | To configure the timeout, write to this file a value along |
| 57 | with any the above units. If no unit is specified, the value |
| 58 | is assumed to be expressed in seconds. |
| 59 | |
| 60 | For example, to set the timeout to 10 minutes run: |
| 61 | echo 10m > /sys/class/leds/dell::kbd_backlight/stop_timeout |
| 62 | |
| 63 | Note that when this file is read, the returned value might be |
| 64 | expressed in a different unit than the one used when the timeout |
| 65 | was set. |
| 66 | |
| 67 | Also note that only some timeouts are supported and that |
| 68 | some systems might fall back to a specific timeout in case |
| 69 | an invalid timeout is written to this file. |