[alsa-devel] ASoC: multi-component updates from RFC

Liam Girdwood lrg at slimlogic.co.uk
Thu Jul 22 10:18:24 CEST 2010

On Thu, 2010-07-22 at 09:27 +0300, Peter Ujfalusi wrote:
> Hello Liam,
> On Wednesday 21 July 2010 15:31:30 ext Liam Girdwood wrote:
> ...
> > The only other change I've made is fixing the twl4030 and DAC33 codec
> > probe and remove (as spotted by Peter).
> I'm in the process of checking the changes.
> For the twl4030 I have spotted the following:
> 1. twl-core registers "twl4030_codec" platform device.
> 2. The driver for this is the drivers/mfd/twl4030-codec.c
> 3. this MFD driver registers the following platform devices:
>    twl4030_codec_audio
>    twl4030_codec_vibra
> 4. the sound/soc/codecs/twl4030.c is the twl4030_codec_audio driver

Ah, I didn't see that part. I'll revert the twl-core name change.

> 5. the drivers/input/misc/twl4030-vibra.c is the twl4030_codec_vibra driver
> Note: the platform data is propagated from board files to mfd/twl4030-codec.c, 
> than this mfd driver passes the appropriate platform data to the soc codec, and 
> vibra driver.
> The codec part of twl40x0, twl50x0 has vibra and audio functionality, and they 
> have interoperability problems (sharing the same resources).

I'm actually looking into the interop problems later as twl6040 + vibra
has the same issues.

> The name for the drivers/mfd/twl4030-codec.c is chosen, because the TRM refers 
> to this block as codec (audio + vibra).
> We could go, and rename however this mfd driver to twl4030-audio (since the TRM 
> randomly refers to audio block instead of codec).
> Than we can have twl4030-codec as device name for the soc codec, and twl4030-
> vibra for the vibra.

Agreed, I'll make that change.

> I'll continue on checking the changes...


Freelance Developer, SlimLogic Ltd
ASoC and Voltage Regulator Maintainer.

More information about the Alsa-devel mailing list