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+rfkill - radio frequency (RF) connector kill switch support
+
+For details to this subsystem look at Documentation/rfkill.txt.
+
+For the deprecated /sys/class/rfkill/*/state and
+/sys/class/rfkill/*/claim knobs of this interface look in
+Documentation/ABI/obsolete/sysfs-class-rfkill.
+
+What:           /sys/class/rfkill
+Date:           09-Jul-2007
+KernelVersion:  v2.6.22
+Contact:        linux-wireless@vger.kernel.org,
+Description:    The rfkill class subsystem folder.
+                Each registered rfkill driver is represented by an rfkillX
+                subfolder (X being an integer > 0).
+
+
+What:           /sys/class/rfkill/rfkill[0-9]+/name
+Date:           09-Jul-2007
+KernelVersion   v2.6.22
+Contact:        linux-wireless@vger.kernel.org
+Description:    Name assigned by driver to this key (interface or driver name).
+Values:         arbitrary string.
+
+
+What:           /sys/class/rfkill/rfkill[0-9]+/type
+Date:           09-Jul-2007
+KernelVersion   v2.6.22
+Contact:        linux-wireless@vger.kernel.org
+Description:    Driver type string ("wlan", "bluetooth", etc).
+Values:         See include/linux/rfkill.h.
+
+
+What:           /sys/class/rfkill/rfkill[0-9]+/persistent
+Date:           09-Jul-2007
+KernelVersion   v2.6.22
+Contact:        linux-wireless@vger.kernel.org
+Description:    Whether the soft blocked state is initialised from non-volatile
+                storage at startup.
+Values:         A numeric value.
+                0: false
+                1: true
+
+
+What:           /sys/class/rfkill/rfkill[0-9]+/hard
+Date:           12-March-2010
+KernelVersion   v2.6.34
+Contact:        linux-wireless@vger.kernel.org
+Description:    Current hardblock state. This file is read only.
+Values:         A numeric value.
+                0: inactive
+                        The transmitter is (potentially) active.
+                1: active
+                        The transmitter is forced off by something outside of
+                        the driver's control.
+
+
+What:           /sys/class/rfkill/rfkill[0-9]+/soft
+Date:           12-March-2010
+KernelVersion   v2.6.34
+Contact:        linux-wireless@vger.kernel.org
+Description:    Current softblock state. This file is read and write.
+Values:         A numeric value.
+                0: inactive
+                        The transmitter is (potentially) active.
+                1: active
+                        The transmitter is turned off by software.