Re: EMU10K1 DSP programs

[Martin Soto <soto@informatik.uni-kl.de>]

On Tue, 2002-09-17 at 16:38, Jaroslav Kysela wrote:
> On 17 Sep 2002, Martin Soto wrote:
> > And, by the way, I have a question regarding it.  In the hardware
> > dependant ioctl interface to the EMU10K1 there are two ioctls,
> > SNDRV_EMU10K1_IOCTL_CODE_PEEK and SNDRV_EMU10K1_IOCTL_CODE_POKE, that
> > allow you to read the DSP code and to actually upload new code.  Part of
> > what SNDRV_EMU10K1_IOCTL_CODE_POKE does is defining new (mixer) controls
> > and eventually deleting those that are not needed any more.
> > 
> > However, I didn't find a way to know which current mixer controls are
> > *actually* associated to general purpose registers in the FX8010.  Of
> > course, I could read the code in emufx.c and determine it from there,
> > but that would make my code very sensible to changes in the driver.  I
> > just though of using the mixer/control interface in alsalib to find all
> > controls, and try to delete them with CODE_POKE, hoping that the driver
> > will only delete those that are connected to GPRs, but that looks too
> > much like a hack.  Is there a more elegant way to handle that?
> 
> I've added gpr_list_control* variables to emu10k1_fx8010_code_t.
> The SNDRV_EMU10K1_IOCTL_CODE_PEEK will fill these variables for you. Note 
> that all this code in emufx.c is mostly untested, so give me feedback, 
> what features/functions need to be corrected.

That was exactly what I was looking for, thanks!  I'll try to write at
least a simple loader in the following days to see if everything works
properly.

Cheers,

M. S.
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Martin Soto

AG Software Engineering
Universitaet Kaiserslautern              Tel:  +49 (631) 205-3449
Kaiserslautern, Germany         E-mail: soto@informatik.uni-kl.de
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