[PATCH] mx28: added LRADC and touchscreen support

[Marek Vasut]

> On 2011-11-29 20:09, Arnd Bergmann wrote:
> > On Sunday 27 November 2011, Jonathan Cameron wrote:
> >>> As indicated by Shawn, adding a new driver specific kernel-level ADC
> >>> interface is not a good idea. IIRC, the result of the last discussion
> >>> was that all ADC drivers should be part of IIO and you should use
> >>> the IIO in-kernel interfaces. Not sure what the state of that code
> >>> is, but if it's not in mainline yet, you should work with Jonathan
> >>> to make sure it gets there. Having more users for that code can
> >>> only speed up the process, and I'm going to refuse another ADC driver
> >>> in drivers/misc or arch/arm/mach-*/.
> >> 
> >> Quick summary of IIO status.  Nothing is in mainline yet.  Intent is to
> >> get the first set of core code (including in kernel pull interfaces)
> >> into linux-next fairly shortly (these have had enough postive feedback
> >> now I think).  Doing push interfaces (as I think we would need here) is
> >> possible with existing patches on top of the stuff in the iio staging
> >> tree but there are some 'interesting' cases where both push and pull
> >> interfaces exist that still need addressing.
> >> 
> >> Also, note the push interface stuff (e.g. interrupt driven) requires a
> >> lot more of the IIO infrastructure to be in place (buffered support and
> >> the demux unit) so may still be some time.  Personally my time is
> >> currently very restricted so all the help anyone can offer is most
> >> welcome!
> > 
> > Ok, thanks for the summary!
> > 
> > Peter, I guess what this means for you is that it's best to first
> > get your code working with the IIO/ADC stuff that is in staging,
> > and get the touchscreen driver ready for merging, on top of that.
> > 
> > Ideally, you would also help out a bit on getting the IIO parts
> > you need graduated from staging. Given Jonathan's explanation,
> > I think my initial reaction was valid: we shouldn't take the
> > ADC driver outside of IIO, because that ends up being more painful
> > than getting the driver ready for inclusion now, and then rewriting
> > it shortly after.
> > 
> > 	Arnd
> 
> Thank you all for your comments. I'm now working on the interface
> change to iio, it may take some time...
> I've also applied most of the suggestions, they'll be in the next
> patches.

Are there any updates here?

M