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