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Date:	Fri, 18 Jul 2014 11:38:27 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Chanwoo Choi <cw00.choi@...sung.com>, jic23@...nel.org,
	ch.naveen@...sung.com, mark.rutland@....com,
	devicetree@...r.kernel.org, kgene.kim@...sung.com,
	pawel.moll@....com, ijc+devicetree@...lion.org.uk,
	linux-iio@...r.kernel.org, t.figa@...sung.com,
	rdunlap@...radead.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	kyungmin.park@...sung.com, robh+dt@...nel.org, galak@...eaurora.org
Subject: Re: [PATCHv6 0/4] iio: adc: exynos_adc: Support Exynos3250 ADC and code clean

On Friday 18 July 2014 14:59:42 Chanwoo Choi wrote:
> This patchset support Exynos3250 ADC (Analog Digital Converter) because
> Exynos3250 has additional special clock for ADC IP.
> 

by coincidence, I have just looked at the same driver in order to
add support for s3c24xx and s3c64xx, so we can remove the plat-samsung
adc framework they still use.  Those changes would naturally conflict
with yours, but I think it makes sense for your patches to come first.

I'll comment a bit more on the individual patches. I didn't have
interest in them earlier, so I didn't comment so far.

Another aspect that came up is the touchscreen support. Right now,
there is drivers/input/touchscreen/s3c2410_ts.c which is intimately
tied to arch/arm/plat-samsung/adc.c. The best way forward (as discussed
on IRC as few days ago) seems to be to integrate support for that into
the exynos_adc driver. Can you comment on which parts actually support
touchscreen? Did touchscreen support get dropped in the exynos hardware,
or is the driver just missing at the moment?

	Arnd
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