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authorCorentin Chary <corentincj@iksaif.net>2009-08-28 14:56:44 +0200
committerLen Brown <len.brown@intel.com>2009-08-28 21:21:12 +0200
commit243ca3e401bc62e704785d215931f1a51fd53bd7 (patch)
tree513e97e3fb2dd05185606538ceb0f46a2e6f4b11 /Documentation/ABI/testing/sysfs-class-lcd
parentvideo/backlight: document sysfs interface (diff)
downloadlinux-243ca3e401bc62e704785d215931f1a51fd53bd7.tar.xz
linux-243ca3e401bc62e704785d215931f1a51fd53bd7.zip
video/lcd: document sysfs interface
Date and KernelVersion may be wrong because the lcd interface was introduced before git initial import. Cc: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Corentin Chary <corentincj@iksaif.net> Signed-off-by: Len Brown <len.brown@intel.com>
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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.