Re: [PATCH] SPI: Unify simple platform data for some controllers

[Alexander Shiyan]

> On Wed, May 29, 2013 at 03:26:34PM +0200, Arnd Bergmann wrote:
> > On Wednesday 29 May 2013, Mark Brown wrote:
> 
> > > We probably also want to make
> > > GPIO chip select support a standard thing that's available with every
> > > driver rather than something the driver has to know about but that's a
> > > separate bit of work.
> 
> > That actually seems simpler than doing it in just one driver: if
> > we add a cs_gpio field to spi_board_info, spi_new_device could
> > just copy that information into the new spi_device instead of
> > taking it from master->cs_gpios.
> 
> Yeah, that bit of it is fine and straightforward.  It's slightly more
> work to factor the chip select handling out so that we can implement the
> handling at the appropriate moments in the flow due to the fact that
> it's embedded in the message transfer functions but totally doable.

Initial try to simplify i.MX SPI driver I will send in 5 min.
Patches is untested, so it is only RFC. Platform data still present in
driver but patch migrate driver to using dynamic counter of
chipselects for dt-case. Is it true way now? Comments are welcome.
Thanks.

---