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

[Timur Tabi]

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
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'
/temp/alsa.1994/sound/soc/fsl/mpc8610_hpcd.c:455: undefined reference
to `cs4270_dai'
/temp/alsa.1994/sound/soc/fsl/mpc8610_hpcd.c:469: undefined reference
to `soc_codec_device_cs4270'
/temp/alsa.1994/sound/soc/fsl/mpc8610_hpcd.c:469: undefined reference
to `soc_codec_device_cs4270'
make: *** [.tmp_vmlinux1] Error 1

So I don't see how an I2C 'remove' function would ever be called
anyway.  If you can show me how, I'll add it.

Now, the ASoC V2 driver can be loaded and unloaded, and I'm pretty
sure I have bugs there.

-- 
Timur Tabi
Linux kernel developer at Freescale