[snd] looking for layout-ids

[Benjamin Herrenschmidt]

On Thu, 2006-05-25 at 12:43 +0200, Johannes Berg wrote:
> Hey,
> 
> In order to replace snd-powermac for the newer machines where the
> 'sound' node has the 'layout-id' property, I'm looking for testers on
> machines that have a layout-id [1] property with one of the following
> values: 0x24, 0x29, 0x33, 0x50 and 0x3a.

Some tips:

 0x24 is old G5's (PowerMac7,2 and 7,3) primary i2s bus
 0x29 is not in my list so I don't know what machine it is 
 0x33 is aluminium powerbook 15" rev. 2 (PowerMac5,4)
 0x3a is mac mini (I can test that one one of these days but we'll need
the
	        toonie codec, which is basically a "null" codec with only
	        the amps GPIOs available)
 0x50 is not in my list

Also not in your list nor in the driver:

 0x3c is recent single CPU desktop G5 (PowerMac9,1) (SMU based) bus
i2s-a
 0x3d is same as above bus i2s-c

The later is a onyx + topaz setup iirc, possibly similar to the quad.

> Once I have all these, I will, along with submitting snd-aoa [2], submit
> a patch to snd-powermac that makes it refuse loading in presence of a
> layout-id property as a first step to migrate to snd-aoa.
> 
> At the same time, I'll probably make i2sbus refuse attaching to a device
> unless there's a layout-id property so that it doesn't claim devices aoa
> doesn't handle yet.
> 
> johannes
> 
> [1] to find your layout-id, execute the following:
> 
>   find /proc/device-tree/ -name layout-id | xargs hexdump -e '1/4 "0x%x\n"'
> 
> If you get no output, you have no layout-id property. If you do get
> output, it will look like this:
>   0x46
> This is the layout-id of your sound node.
> 
> [2] Before you ask: I will not do this before snd-aoa supports headphone
> detection :)
> 
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