On 2/16/07, Jean-Michel Pouré <jmpoure@xxxxxxx> wrote:
> Would it be possible to address devices using product IDs directly. I
> know this sounds incredible, but each device usually has a unique ID
> somewhere.
>
> So in place of writing plughw:x,y, we would write productid:xyzzer. This
> would allow plughw:x,y to continue to behave like today. The only
> difference is that users would really have a unique way of naming
> hotplugable devices.
Yes - cards are already addressable by name. So if /proc/asound/cards contains:
0 [Audigy2 ]: Audigy2 - Audigy 2 ZS [SB0350]
Audigy 2 ZS [SB0350] (rev.4, serial:0x20021102)
at 0xe800, irq 10
You would use "plughw:Audigy2" rather than "plughw:x,y".
I believe USB devices have a hardware GUID that the other OS uses to
distinguish multiple devices of the same type. If ALSA were to expose
this in the card name then persistent device naming should be
possible.
Lee
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