rfkill: Add documentation about LED triggers
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt
index 2ee6ef9..1f0c270 100644
--- a/Documentation/rfkill.txt
+++ b/Documentation/rfkill.txt
@@ -83,6 +83,8 @@
assign the poll_hw_block() callback (then the rfkill core will poll the
device). Don't do this unless you cannot get the event in any other way.
+RFKill provides per-switch LED triggers, which can be used to drive LEDs
+according to the switch state (LED_FULL when blocked, LED_OFF otherwise).
5. Userspace support
