Re: Compiling the newest code for testing?

[Takashi Iwai <tiwai@suse.de>]

At Fri, 7 Jan 2005 21:27:38 +0300,
Mikhail Ramendik wrote:
> 
> > > - Is it OK to compile this kernel code by merely copying the relevant
> > > directories (sound [except for sound/oss] and include/sound) from the
> > > alsa tree into the kernel tree? I run an RPM-based system, and would like
> > > to keep the existing approach to kernel building (full RPM rebuild)
> > > alive; it's slow but reliable.
> >
> > Not always.  The ALSA cvs may contain the codes for the very latest
> > kernel (rc or mm).  Copying the files to kernel might not work when
> > the kernel function / API is changed.  The difference is usually
> > absorbed by patches in alsa-driver tree.
> 
> Which kernel is 1.0.8rc2 for? There apparently is no recent -rc at the moment. 
> If it's against an -mm version, I can compile that too, at least for the alsa 
> tests. I just need to be sure which kernel version it's tied to.

Basically, alsa-kernel is for the latest vanilla kernel.
Not sure whether it works with 2.6.10-mm tree now although I think it
should be fine, too.

> > > And an i8x0-specific question: in the above-mentioned current code,
> > > should output to hw:0,0 go only to analog, or to both analog and spdif?
> >
> > Analog only.
> >
> > Basically, you should avoid to access "hw:0,0".  If you want to output
> > to analog front, you can use "front", instead.  Similarly, for spdif,
> > use "spdif" (or "iec958").
> 
> But OSS emulation is needed for some of the stuff I use, and that writes to 
> hw:0,0 . I know I should be searching for fixed on the other end as well.

Then avoid OSS ;)

Or, you can assign hw:0,4 to /dev/adsp with a module option.
See OSS-Emulation.txt for details.


Takashi


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