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Re: list of PowerMac sound hardware TO-DO (help welcome)



On Tue, 2005-03-22 at 16:13 +0200, Martin-Éric Racine wrote:
> On Tue, 22 Mar 2005, Benjamin Herrenschmidt wrote:
> 
> > On Mon, 2005-03-21 at 15:19 +0200, Martin-Éric Racine wrote:
> > > Regarding overall pmac ALSA support, is there a table that shows what
> > > works and what is broken for each supported sound hardware? Such a table
> > > could go a long way towards helping whoever will pocket the $500 Ubuntu
> > > bounty for fixing ALSA for all pmac sound hardware variants.
> > 
> > Not exactly, you are welcome to start such a table though :)
> 
> This is what I have so far:
> 
> 				------works y/n------
> CHIPSET         MODELS          BEEP            ALSA
> awacs
> burgundy        G3 iMac         no              no
> daca
> keywest
> tumbler
> 
> Other people are quite welcome to contribute additional data, especially
> which PowerMac models use which chipset.  Tools that can be used to find
> the info include 'lspci' 'dmesg' and 'hwinfo' - just to name a few.


You need more infos. lspci is useless, but the device-tree might be
useful.

The type of "chipset" can be broken down more depending on the bus type:
apple's davbus (awacs, burgundy, screamer) and i2s (daca, tumbler,
snapper, and anything more recent where apple doesn't bother putting
names anymore).

The real problem is with the recent stuff though. For example, I can't
yet find what sound codec is used on the Mini and I suspect it might be
a non-programmable fixed function D->A converter (which means no HW
volume control ...). The G5s have a tas3004 (snapper) _PLUS_ a second
codec for the digital stuff (which itself exist in at least 3 models, at
least darwin has drivers for 3 versions of it).

Ben.




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