[alsa-devel] snd-soc-cs4270: Convert to a new-style i2c driver (work in progress)

[Mark Brown]

On Wed, Sep 03, 2008 at 03:30:33PM -0500, Timur Tabi wrote:
> On Wed, Sep 3, 2008 at 2:47 PM, Timur Tabi <timur at freescale.com> wrote:

> > I'm working on a fix for this, but there's something you need to know.
> >  I don't think ASoC V1 modules can be unloaded.

> Correction: ASoC drivers can't be compiled as modules, not even the
> codec drivers.  I had to hack up the Kconfigs to get this to work, but

They can be - I do this on a regular basis during development.  If it
weren't possible I'd probably get annoyed enough to make it so :)

> there is no way to compile the drivers as modules.  If you try, you
> get this:

>   CC [M]  sound/soc/codecs/cs4270.o
>   LD [M]  sound/soc/codecs/snd-soc-cs4270.o
> ...
> sound/built-in.o: In function `mpc8610_hpcd_probe':
> /temp/alsa.1994/sound/soc/fsl/mpc8610_hpcd.c:455: undefined reference
> to `cs4270_dai'

If you build the codec driver as a module then you also need to build
the machine driver as a module.  Your Kconfig ought to be enforcing
that which I guess is the hack you had to put in?