RE: [RFC PATCH 1/6] Core files for the DWC2 driver

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Replying to myself...

> From: Paul Zimmerman
> Sent: Friday, January 11, 2013 2:22 PM
> 
> > From: Felipe Balbi [mailto:balbi@xxxxxx]
> > Sent: Friday, January 11, 2013 1:44 AM

< snip >

> > I would like it much better if you would follow what we did for dwc3 and
> > have core IP in a separate driver with pci/exynos/whatever glue in a
> > parent device driver. Still, if you really want to make core IP driver a
> > library, then at a minimum do it right, don't expose ALL functions, make
> > sure you have a small set of APIs for the glue to call. Encapsulate
> > implementation details from your users, they really don't need to call
> > each function separately. Ideally pci glue would call dwc2_initialize()
> > on probe() and that's it.
> 
> Once we get to the point of integrating another interface, like for a
> platform driver, I plan to make the core code a separate module, so
> the code can be shared instead of being duplicated in each driver. But
> we're not quite there yet.
> 
> But I disagree with the "small set of APIs" thing. It would be a HUGE
> amount of effort to rewrite the code like that. The reason the code
> is in separate files is to give it a somewhat logical arrangement, and to
> avoid having one gargantuan source file. There is no intention to have
> individual APIs for each of the files. I disagree that there are any
> external "users" like you mention above, it is all one driver.

After rereading this, I think I misunderstood what you were saying.
If you mean have a small API between the core module and the bus
glue module, then I agree. I think it's already fairly small, but I can
look at trimming it down some more.

-- 
Paul

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