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authorDavid Vrabel <david.vrabel@csr.com>2008-11-17 10:53:42 -0500
committerDavid Vrabel <david.vrabel@csr.com>2008-11-19 09:46:33 -0500
commit6fae35f9cea92793a98b2d9ab21235e5ae035581 (patch)
tree82142169ff2ccada8c6c98beb6da59cafe8d913d /Documentation
parente17be2b2a95b43fe0d5878adf330701bb7a77115 (diff)
uwb: add basic radio manager
The UWB radio manager coordinates the use of the radio between the PALs that may be using it. PALs request use of the radio with uwb_radio_start() and the radio manager will start beaconing if its not already doing so. When the last PAL has called uwb_radio_stop() beaconing will be stopped. In the future, the radio manager will have a more sophisticated channel selection algorithm, probably following the Channel Selection Policy from the WiMedia Alliance when it is finalized. For now, channel 9 (BG1, TFC1) is selected. The user may override the channel selected by the radio manager and may force the radio to stop beaconing. The WUSB Host Controller PAL makes use of this and there are two new debug PAL commands that can be used for testing. Signed-off-by: David Vrabel <david.vrabel@csr.com>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-class-uwb_rc14
-rw-r--r--Documentation/usb/wusb-cbaf9
2 files changed, 8 insertions, 15 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-uwb_rc b/Documentation/ABI/testing/sysfs-class-uwb_rc
index a0d18dbeb7a9..6a5fd072849d 100644
--- a/Documentation/ABI/testing/sysfs-class-uwb_rc
+++ b/Documentation/ABI/testing/sysfs-class-uwb_rc
@@ -32,14 +32,16 @@ Contact: linux-usb@vger.kernel.org
32Description: 32Description:
33 Write: 33 Write:
34 34
35 <channel> [<bpst offset>] 35 <channel>
36 36
37 to start beaconing on a specific channel, or stop 37 to force a specific channel to be used when beaconing,
38 beaconing if <channel> is -1. Valid channels depends 38 or, if <channel> is -1, to prohibit beaconing. If
39 on the radio controller's supported band groups. 39 <channel> is 0, then the default channel selection
40 algorithm will be used. Valid channels depends on the
41 radio controller's supported band groups.
40 42
41 <bpst offset> may be used to try and join a specific 43 Reading returns the currently active channel, or -1 if
42 beacon group if more than one was found during a scan. 44 the radio controller is not beaconing.
43 45
44What: /sys/class/uwb_rc/uwbN/scan 46What: /sys/class/uwb_rc/uwbN/scan
45Date: July 2008 47Date: July 2008
diff --git a/Documentation/usb/wusb-cbaf b/Documentation/usb/wusb-cbaf
index 2e78b70f3adc..426ddaaef96f 100644
--- a/Documentation/usb/wusb-cbaf
+++ b/Documentation/usb/wusb-cbaf
@@ -80,12 +80,6 @@ case $1 in
80 start) 80 start)
81 for dev in ${2:-$hdevs} 81 for dev in ${2:-$hdevs}
82 do 82 do
83 uwb_rc=$(readlink -f $dev/uwb_rc)
84 if cat $uwb_rc/beacon | grep -q -- "-1"
85 then
86 echo 13 0 > $uwb_rc/beacon
87 echo I: started beaconing on ch 13 on $(basename $uwb_rc) >&2
88 fi
89 echo $host_CHID > $dev/wusb_chid 83 echo $host_CHID > $dev/wusb_chid
90 echo I: started host $(basename $dev) >&2 84 echo I: started host $(basename $dev) >&2
91 done 85 done
@@ -95,9 +89,6 @@ case $1 in
95 do 89 do
96 echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid 90 echo 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 > $dev/wusb_chid
97 echo I: stopped host $(basename $dev) >&2 91 echo I: stopped host $(basename $dev) >&2
98 uwb_rc=$(readlink -f $dev/uwb_rc)
99 echo -1 | cat > $uwb_rc/beacon
100 echo I: stopped beaconing on $(basename $uwb_rc) >&2
101 done 92 done
102 ;; 93 ;;
103 set-chid) 94 set-chid)