misc/163082: [ath] ar9285 diversity fixes

[Adrian Chadd]

>Number:         163082
>Category:       misc
>Synopsis:       [ath] ar9285 diversity fixes
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Dec 05 16:00:27 UTC 2011
>Closed-Date:
>Last-Modified:
>Originator:     Adrian Chadd
>Release:        -HEAD
>Organization:
>Environment:
n/a
>Description:
AR9285 diversity needs to be tidied up:


>How-To-Repeat:

>Fix:
TODO List:

* RX diversity should not be controlled by "txantenna". Add an "RX diversity" knob that uses a HAL call, rather than overriding the TX antenna switch code.
* Modify the combined diversity stuff to only be enabled when STA mode is enabled. It won't work for modes where multiple nodes are being listened to.
* .. perhaps disable it when channel scanning?
* And then add a HAL config bit to allow "combining" diversity to be enabled, and leave it disabled by default.


>Release-Note:
>Audit-Trail:
>Unformatted: