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Subject[PATCH] Documentation: dell-laptop: correct als_setting description
Date
It was incorrectly stated that als_setting is to enable and disable
the ambient light sensor on supported system rather than setting a
threshold value. Correct the description and add a note to make more
clear what could be the effect of changing als_setting.

Reported-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Gabriele Mazzotta <gabriele.mzt@gmail.com>
---
Documentation/ABI/testing/sysfs-platform-dell-laptop | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)

diff --git a/Documentation/ABI/testing/sysfs-platform-dell-laptop b/Documentation/ABI/testing/sysfs-platform-dell-laptop
index 7969443..a40c217 100644
--- a/Documentation/ABI/testing/sysfs-platform-dell-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-dell-laptop
@@ -4,10 +4,12 @@ KernelVersion: 3.19
Contact: Gabriele Mazzotta <gabriele.mzt@gmail.com>,
Pali Rohár <pali.rohar@gmail.com>
Description:
- This file allows to control the automatic keyboard
- illumination mode on some systems that have an ambient
- light sensor. Write 1 to this file to enable the auto
- mode, 0 to disable it.
+ This file allows to set at which value reported by the
+ ambient light sensor the keyboard backlight has to be
+ turned on or off.
+
+ Note that the 'als' trigger must be supported and enabled
+ for this setting to have any effect.

What: /sys/class/leds/dell::kbd_backlight/start_triggers
Date: December 2014
@@ -32,6 +34,13 @@ Description:

Note that not all the available triggers can be configured.

+ Note also that enabling the 'als' trigger could simply
+ alter the behavior of the other triggers and not allow
+ the ambient light sensor control the keyboard illumination
+ independently. It could prevent other triggers from turning
+ the keyboard backlight on or force them to turn it off
+ depending on the current ambient light and als_setting.
+
What: /sys/class/leds/dell::kbd_backlight/stop_timeout
Date: December 2014
KernelVersion: 3.19
--
2.1.4


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