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authorJohannes Berg <johannes@sipsolutions.net>2009-06-03 10:17:59 +0200
committerJohn W. Linville <linville@tuxdriver.com>2009-06-03 14:06:15 -0400
commitf71fea23a27ba8ec53375832aab6a80fc14622e0 (patch)
tree277692f96525aa4eae979fb4c97c83b2ea2eef9e /Documentation/rfkill.txt
parent2ec2c68c11af95075f29e370970eb97c89234e2e (diff)
downloadlinux-linaro-stable-f71fea23a27ba8ec53375832aab6a80fc14622e0.tar.gz
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>
Diffstat (limited to 'Documentation/rfkill.txt')
-rw-r--r--Documentation/rfkill.txt8
1 files changed, 7 insertions, 1 deletions
diff --git a/Documentation/rfkill.txt b/Documentation/rfkill.txt
index de941e309d47..1b74b5f30af4 100644
--- a/Documentation/rfkill.txt
+++ b/Documentation/rfkill.txt
@@ -113,7 +113,7 @@ The following sysfs entries exist for every rfkill device:
0: RFKILL_STATE_SOFT_BLOCKED
transmitter is turned off by software
1: RFKILL_STATE_UNBLOCKED
- transmiter is (potentially) active
+ transmitter is (potentially) active
2: RFKILL_STATE_HARD_BLOCKED
transmitter is forced off by something outside of
the driver's control.
@@ -128,3 +128,9 @@ RFKILL_TYPE
The contents of these variables corresponds to the "name", "state" and
"type" sysfs files explained above.
+
+An alternative userspace interface exists as a misc device /dev/rfkill,
+which allows userspace to obtain and set the state of rfkill devices and
+sets of devices. It also notifies userspace about device addition and
+removal. The API is a simple read/write API that is defined in
+linux/rfkill.h.