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+What: /sys/class/rc/
+Date: Apr 2010
+KernelVersion: 2.6.35
+Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+ The rc/ class sub-directory belongs to the Remote Controller
+ core and provides a sysfs interface for configuring infrared
+ remote controller receivers.
+
+What: /sys/class/rc/rcN/
+Date: Apr 2010
+KernelVersion: 2.6.35
+Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+ A /sys/class/rc/rcN directory is created for each remote
+ control receiver device where N is the number of the receiver.
+
+What: /sys/class/rc/rcN/protocols
+Date: Jun 2010
+KernelVersion: 2.6.36
+Contact: Mauro Carvalho Chehab <m.chehab@samsung.com>
+Description:
+ Reading this file returns a list of available protocols,
+ something like:
+ "rc5 [rc6] nec jvc [sony]"
+ Enabled protocols are shown in [] brackets.
+ Writing "+proto" will add a protocol to the list of enabled
+ protocols.
+ Writing "-proto" will remove a protocol from the list of enabled
+ protocols.
+ Writing "proto" will enable only "proto".
+ Writing "none" will disable all protocols.
+ Write fails with EINVAL if an invalid protocol combination or
+ unknown protocol name is used.