[alsa-devel] [PATCH 3/4] ASoC sst: Add mid machine driver

Koul, Vinod vinod.koul at intel.com
Mon Jan 3 17:01:26 CET 2011

> > > If this is intended to be
> > > a generic driver that manages the interaction with your BIOS then I'd
> > > expect to see something like that.  If it's a driver for a specific
> > > system then I'd expect the driver to say what it's a driver for.
> > No, per your suggestion we made it machine specific driver. Yes will rename
> it
> > to mid_machine_mfld as this is Medfield specific machine driver
> > Does that fix your concern?
> That helps but in that case you also need to remove all the device
> registration stuff except for the actual machine driver from the init
> and exit functions.  The CPU stuff is all a fixed property of the CPU
> and should be reigstered by the architecture code (possibly with some
> control for the individual machine), the CODEC should be being
> enumerated by whatever normally does that.  The only thing this driver
> should be doing is specifying how these things are connected.
Yes, this patch had only the machine specific controls and dai link.
It also creates the audio platform devices soc-audio platform and codec device.
It doesn't do anything else

> > > Also, looking at your CODEC driver I'm not seeing anything that looks
> > > like the handling for the three "nameless" CODEC vendors you've got -
> > > given that you've got vendor workarounds in the code there this is
> > > really surprising.
> > The msic.c is msic codec which is specific to Medfield platform only. The
> other
> > three codecs are for Moorestown and we will add them ( 3 separate codec
> drivers)
> > when we add Moorestown machine (next after completing this)
> What exactly is the msic CODEC?  Given the references to non-specific
> "vendor" registers it doesn't sound like a particular CODEC driver.
Since Medfield platform is not declared yet we can't reveal the name of the
codec vendor. The Moorestown codecs which we will add will not be nameless
as this one and we will add as vendorversion.c format as in current codec
drivers. I will replace this msic driver name once the platform is publically


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