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rfkill: document /dev/rfkill
Add some blurb about /dev/rfkill to the documentation and fix the "transmiter" spelling error. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
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@ -113,7 +113,7 @@ The following sysfs entries exist for every rfkill device:
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0: RFKILL_STATE_SOFT_BLOCKED
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transmitter is turned off by software
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1: RFKILL_STATE_UNBLOCKED
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transmiter is (potentially) active
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transmitter is (potentially) active
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2: RFKILL_STATE_HARD_BLOCKED
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transmitter is forced off by something outside of
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the driver's control.
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@ -128,3 +128,9 @@ RFKILL_TYPE
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The contents of these variables corresponds to the "name", "state" and
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"type" sysfs files explained above.
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An alternative userspace interface exists as a misc device /dev/rfkill,
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which allows userspace to obtain and set the state of rfkill devices and
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sets of devices. It also notifies userspace about device addition and
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removal. The API is a simple read/write API that is defined in
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linux/rfkill.h.
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