[PATCH] fix snd_ich support for Asus M2400N

Autrijus Tang autrijus at autrijus.org
Mon Feb 23 15:22:17 PST 2004


Hi there.  I'm not on -multimedia, so sorry for the late reply.  Please
Cc me on this thread. :-)

> > It works by backporting
> > the legacy support for NAMBAR/NABMBAR from 
> > 5.1-RELEASE, instead of using the newer and broken
> > MMBAR/MBBAR.
>
>	I've quite confused by the statement above.  I think you mean
> that FreeBSD-5.1+ has a problem where...and we need to enable
> legacy mode on the ich4(only) by poking a register?

No...  Please cf. misc/61388's Description:
    The ASUS M2400N Notebooks have a SigmaTel sound device which
    worked perfect with 5.0R and 5.1R. Since 5.2R it doesn't work anymore.

So you see, 5.0R and 5.1R worked fine, then 5.2R broke it by lumping
ICH4 together with ICH5 code, thus breaking it.  My patch restored the 5.1R
behaviour for ICH4 and hence fixing the problem.

> Are you confident that if I commit this patch, it won't
> disrupt other ich users? (It would be helpful if others with ich
> hardware would let us know :) )

I'm reasonably confident.  It won't be any worse than the 5.1R
situation, at least.  And 5.2R is broken here anyway. :-)

But yes, feedback from other ich4 users will be appreciated.

Thanks,
/Autrijus/
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