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-rw-r--r--Documentation/ABI/testing/sysfs-platform-ideapad-laptop13
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
index 597a2f3d1efc..1b31be3f996a 100644
--- a/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
+++ b/Documentation/ABI/testing/sysfs-platform-ideapad-laptop
@@ -25,3 +25,16 @@ Description:
Control touchpad mode.
* 1 -> Switched On
* 0 -> Switched Off
+
+What: /sys/bus/pci/devices/<bdf>/<device>/VPC2004:00/fn_lock
+Date: May 2018
+KernelVersion: 4.18
+Contact: "Oleg Keri <ezhi99@gmail.com>"
+Description:
+ Control fn-lock mode.
+ * 1 -> Switched On
+ * 0 -> Switched Off
+
+ For example:
+ # echo "0" > \
+ /sys/bus/pci/devices/0000:00:1f.0/PNP0C09:00/VPC2004:00/fn_lock