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diff --git a/Documentation/ABI/testing/sysfs-class-lcd b/Documentation/ABI/testing/sysfs-class-lcd
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+What:           /sys/class/lcd/<lcd>/lcd_power
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Control LCD power, values are FB_BLANK_* from fb.h
+                 - FB_BLANK_UNBLANK (0)   : power on.
+                 - FB_BLANK_POWERDOWN (4) : power off
+
+What:           /sys/class/lcd/<lcd>/contrast
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Current contrast of this LCD device. Value is between 0 and
+                /sys/class/lcd/<lcd>/max_contrast.
+
+What:           /sys/class/lcd/<lcd>/max_contrast
+Date:           April 2005
+KernelVersion:  2.6.12
+Contact:        Richard Purdie <rpurdie@rpsys.net>
+Description:
+                Maximum contrast for this LCD device.