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1.. SPDX-License-Identifier: GPL-2.0 OR GFDL-1.1-no-invariants-or-later2 3.. _Remote_controllers_Intro:4 5************6Introduction7************8 9Currently, most analog and digital devices have a Infrared input for10remote controllers. Each manufacturer has their own type of control. It11is not rare for the same manufacturer to ship different types of12controls, depending on the device.13 14A Remote Controller interface is mapped as a normal evdev/input15interface, just like a keyboard or a mouse. So, it uses all ioctls16already defined for any other input devices.17 18However, remove controllers are more flexible than a normal input19device, as the IR receiver (and/or transmitter) can be used in20conjunction with a wide variety of different IR remotes.21 22In order to allow flexibility, the Remote Controller subsystem allows23controlling the RC-specific attributes via24:ref:`the sysfs class nodes <remote_controllers_sysfs_nodes>`.25