PowerMac7,3 sound (was: PowerBook5,4 -- no sound?)

[Andreas Schwab]

Johannes Berg <johannes at sipsolutions.net> writes:

> Andreas, you'll probably be able to get a bit further by inserting the
> following code in front of the loop in i2sbus-core.c line 162, and
> removing the of_address_to_resource call inside the loop.
>
>   dev->resources[0].start = 0x80010000;
>   dev->resources[0].end   = 0x80010fff;
>   dev->resources[1].start = 0x80008000;
>   dev->resources[1].end   = 0x800080ff;
>   dev->resources[2].start = 0x80008100;
>   dev->resources[2].end   = 0x800081ff;
>
> But I'm not sure that is correct on all machines (in fact, I'm not
> perfectly sure it is correct on your machine).

I have the following sound resources in /proc/iomem:

        80008000-800083ff : 0.00010000:i2s
          80008000-800083ff : Sound DMA
        80010000-80010fff : 0.00010000:i2s
          80010000-80010fff : Sound Control

I'm not sure whether the first mapping should be split, but I don't know
much about how resource mappings work.

> After that, you'll probably still not have usable sound though because I
> know nothing about the layout-id of your machine. If I have support for
> your codec already, that should be easy though.

The layout id is 36, and it has both line out and headphone, detected as a
Snapper.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab at suse.de
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