Snapper on spring 2005 PowerBooks

Hello,

has anybody got snapper to work on a PowerBook from around
May 2005 or
newer (on current-, 4.99.30)?  Snapper attaches just fine
as

  snapper0 at obio0 offset 0x0: irq 30,1,2
  deq0 at ki2c1 Apple Digital Equalizer, addr 0x6a
  audio0 at snapper0: full duplex

, and everything output from cdplay and similar commands
looks just
fine, but there is no sound.  This seems to be the same
situation as in 

  http://mail-index.netbsd.org/port-macppc/2006/02/10
/0001.html

.  Does anybody have a clue where to look for the problem? 
I have
nothing against fiddling around with the driver, but does
anybody have a
hint where to start looking?

(My kernel is essentially GENERIC.)

-- Johan

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Hello,

On Sep 12, 2007, at 13:35, Johan Wallén wrote:

> has anybody got snapper to work on a PowerBook from
around May 2005 or
> newer (on current-, 4.99.30)?  Snapper attaches just
fine as
>
>   snapper0 at obio0 offset 0x0: irq 30,1,2
>   deq0 at ki2c1 Apple Digital Equalizer, addr 0x6a
>   audio0 at snapper0: full duplex
>
> , and everything output from cdplay and similar
commands looks just
> fine, but there is no sound.

I guess you tried things like mpg123? In most newer Apple
laptops the  
CDROM has no analog audio connection to the sound chip so
cdplay  
doesn't produce any sound.

Besides that, please post your ofctl -p output so we know
what exact  
kind of hardware we're talking about.

have fun
Michael
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Hello,

On Sep 12, 2007, at 14:35, Johan Wallén wrote:

> Michael Lorenz <macallannetbsd.org> writes:
>
>> I guess you tried things like mpg123? In most newer
Apple laptops the
>> CDROM has no analog audio connection to the sound
chip so cdplay
>> doesn't produce any sound.
>
> No success with mpg123 either.

Thought so but had to be sure.

>> Besides that, please post your ofctl -p output so
we know what exact
>> kind of hardware we're talking about.
>
> Ok.  Here is the output.

Let's see, the interesting stuff starts here:

> ff985d68: /pcif2000000/mac-io17/i2s0/i2s-a10000/sound
>
> built-in
> compatible              414f4162 61736500 ........
........    
> "AOAbase"
> device_type             736f756e 64636869 7000....
........    
> "soundchip"
> layout-id               00000046 ........ ........
........   ...F
> name                    736f756e 6400.... ........
........   "sound"
> object-model-version    00000002 ........ ........
........   ....
> platform-tas-codec-ref  ff98cbc8 ........ ........
........   ....
> vendor-id               0000106b ........ ........
........   ...k

Hmm, doesn't claim to be a snapper.

> ff98cbc8: /pcif2000000/mac-io17/i2c18000/i2c-bus0/codec6a
>
> built-in
> compatible              74617333 30303400 ........
........    
> "tas3004"
>             0008:       636f6465 6300.... ........
........   "codec"
>             000e:       00...... ........ ........
........   ""
> device_type             636f6465 6300.... ........
........   "codec"
> name                    636f6465 6300.... ........
........   "codec"
> platform-do-tas-codec-ref
>                         ff985d68 08000000 00000027
........   ..] 
> h.......'
> reg                     0000006a ........ ........
........   ...j

It is the right codec though, the i2s stuff is little more
than a DMA  
backend so it /should/ work.

So, do you see periodic interrupts from when playing or
recording  
audio? Do you get noise when reading from /dev/audio? If you
see  
interrupts then at least the DMA is working.

have fun
Michael
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Hello,

Michael Lorenz <macallannetbsd.org> writes:

> So, do you see periodic interrupts from when playing or
recording  
> audio? Do you get noise when reading from /dev/audio?
If you see  
> interrupts then at least the DMA is working.

I have not had time to look into it properly, but it seems
that I do not
get any interrupts at all. 

-- Johan