Revert "Documentation: Add entry for dell-laptop sysfs interface"

This reverts commit 3161293ba6dfceee9c1efe75185677445def05d4.

This interface was determined to be flawed and required too invasive a
fix for the RC cycle. This will be revisited in 3.20.

Signed-off-by: Darren Hart <dvhart@linux.intel.com>

diff --git a/Documentation/ABI/testing/sysfs-platform-dell-laptop b/Documentation/ABI/testing/sysfs-platform-dell-laptop
deleted file mode 100644 (file)
index 7969443..0000000
--- a/Documentation/ABI/testing/sysfs-platform-dell-laptop
+++ /dev/null
@@ -1,60 +0,0 @@
-What:          /sys/class/leds/dell::kbd_backlight/als_setting
-Date:          December 2014
-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.
-
-What:          /sys/class/leds/dell::kbd_backlight/start_triggers
-Date:          December 2014
-KernelVersion: 3.19
-Contact:       Gabriele Mazzotta <gabriele.mzt@gmail.com>,
-               Pali Rohár <pali.rohar@gmail.com>
-Description:
-               This file allows to control the input triggers that
-               turn on the keyboard backlight illumination that is
-               disabled because of inactivity.
-               Read the file to see the triggers available. The ones
-               enabled are preceded by '+', those disabled by '-'.
-
-               To enable a trigger, write its name preceded by '+' to
-               this file. To disable a trigger, write its name preceded
-               by '-' instead.
-
-               For example, to enable the keyboard as trigger run:
-                   echo +keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers
-               To disable it:
-                   echo -keyboard > /sys/class/leds/dell::kbd_backlight/start_triggers
-
-               Note that not all the available triggers can be configured.
-
-What:          /sys/class/leds/dell::kbd_backlight/stop_timeout
-Date:          December 2014
-KernelVersion: 3.19
-Contact:       Gabriele Mazzotta <gabriele.mzt@gmail.com>,
-               Pali Rohár <pali.rohar@gmail.com>
-Description:
-               This file allows to specify the interval after which the
-               keyboard illumination is disabled because of inactivity.
-               The timeouts are expressed in seconds, minutes, hours and
-               days, for which the symbols are 's', 'm', 'h' and 'd'
-               respectively.
-
-               To configure the timeout, write to this file a value along
-               with any the above units. If no unit is specified, the value
-               is assumed to be expressed in seconds.
-
-               For example, to set the timeout to 10 minutes run:
-                   echo 10m > /sys/class/leds/dell::kbd_backlight/stop_timeout
-
-               Note that when this file is read, the returned value might be
-               expressed in a different unit than the one used when the timeout
-               was set.
-
-               Also note that only some timeouts are supported and that
-               some systems might fall back to a specific timeout in case
-               an invalid timeout is written to this file.