Re: Turning lucent winmodem into soundcard

Jeff Garzik (jgarzik@pobox.com)
Fri, 17 Sep 1999 04:47:40 -0400


Pavel Machek wrote:
> I've driver which essentially turns lucents winmodem into
> soundcard. So - hardware interface was guessed and "only" remaining
> part is doing v34 in software.

Let me be the first to congratulate you, Richard, and Jamie for all the
hard work you guys put in the software.

> Now, question is where should it go. That winmodem uses interrupts so
> little that it can be nicely done using polling+userspace with zero
> performance lost. Still it is device driver. Should it go into kernel?
> [Well, drivers/sound/modem would be cool :-)]

> Then, there's v34 stack. It is not written yet, but it will eventually
> get written. It needs sort of realtime guarantees. Should it go into
> kernel?

A pointer to the V34 work in progress is in order here:
http://www.enst.fr/~bellard/linmodem.html

IMHO your driver should go into the kernel as a sound variant like you
suggest, and then userland can talk to that driver via a generic
soundmodem interface.

Jeff

-- 
Custom driver development	|    Never worry about theory as long
Open source programming		|    as the machinery does what it's
				|    supposed to do.  -- R. A. Heinlein

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