Re: [PATCH 2/4] USB OTG: Add driver for NXP's ISP1504 transceiver

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On Tue, Aug 18, 2009 at 07:26:42PM +0300, Felipe Balbi wrote:
> On Tue, Aug 18, 2009 at 12:34:31PM +0200, ext Daniel Mack wrote:
> > On Tue, Aug 18, 2009 at 12:57:40PM +0300, Felipe Balbi wrote:
> > > On Tue, Aug 18, 2009 at 11:03:38AM +0200, ext Gadiyar, Anand wrote:
> > > > Different link controllers have different methods for accessing the
> > > > transceiver's registers. This series is only adding function pointers
> > > > that can be populated later depending on the controller used. I think 
> > > > it is useful to have.
> > > 
> > > yes, and that could be done via platform_data on nop-xceiv for example.
> > 
> > I don't get the idea what nop-xceiv is supposed to do in the game,
> > sorry. What's needed for embedded boards is a thin glue layer that links
> > platform/soc specific ULPI access functions to the generic ULPI
> > transceiver (which was formerly a specific 1504 driver, but that will
> > change now).
> > 
> > So what I will add is a function like
> > 
> >   struct otg_transceiver *otg_ulpi_xceiv_create(struct otg_io_access_ops *ops);
> > 
> > and call it from the platform code. Which is quite straigt forward,
> > right? How would that look like with the nop-xceiv code, can you
> > elaborate?
> 
> I was pointing out that the 1504 driver was unnecessary, in a sense.
> Having ulpi_read() and ulpi_write() abstractions is pretty ok and should
> be done for sure.

Any feelings about the new version of this patch set I've sent around
some days ago?

  http://article.gmane.org/gmane.linux.ports.arm.kernel/65048

Thanks,
Daniel
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