linux-kernel - Re: [PATCH v4 5/9] iio: adc: at91-sama5d2_adc: add support for position and pressure channels

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Date:   Mon, 7 May 2018 12:28:10 +0200
From:   Alexandre Belloni <alexandre.belloni@...tlin.com>
To:     Eugen Hristev <eugen.hristev@...rochip.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        ludovic.desroches@...rochip.com,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-input@...r.kernel.org, nicolas.ferre@...rochip.com,
        dmitry.torokhov@...il.com, robh@...nel.org
Subject: Re: [PATCH v4 5/9] iio: adc: at91-sama5d2_adc: add support for
 position and pressure channels

On 07/05/2018 09:18:39+0300, Eugen Hristev wrote:
> On 06.05.2018 20:59, Alexandre Belloni wrote:
> > Hi,
> > 
> > On 06/05/2018 18:29:53+0100, Jonathan Cameron wrote:
> > > On Mon, 30 Apr 2018 13:32:11 +0300
> > > Eugen Hristev <eugen.hristev@...rochip.com> wrote:
> > > 
> > > > This implements the support for position and pressure for the included
> > > > touchscreen support in the SAMA5D2 SOC ADC block.
> > > > Two position channels are added and one for pressure.
> > > > They can be read in raw format, or through a buffer.
> > > > A normal use case is for a consumer driver to register a callback buffer
> > > > for these channels.
> > > > When the touchscreen channels are in the active scan mask,
> > > > the driver will start the touchscreen sampling and push the data to the
> > > > buffer.
> > > > 
> > > > Some parts of this patch are based on initial original work by
> > > > Mohamed Jamsheeth Hajanajubudeen and Bandaru Venkateswara Swamy
> > > > 
> > > > Signed-off-by: Eugen Hristev <eugen.hristev@...rochip.com>
> > > Looks good to me now.
> > > 
> > > I'm assuming that once Dmitry and others are happy, I'll take the
> > > series through the IIO tree. Will reply to the cover letter if the
> > > rest of the patches look good to me to let everyone know that without
> > > having to catch this comment down in here!
> > > 
> > 
> > I'm planning to take both DT patches through the at91 tree once you take
> > the DT bindings patches.
> 
> Please take into consideration that those DT patches do not build
> stand-alone, they depend on
> [PATCH v4 7/9] dt-bindings: iio: adc: at91-sama5d2_adc: add channel specific
> consumer info
> 
> (the DT patches add an include statement of a file which is created in this
> patch).
> 

So the proper way is to actually have the values in the dt instead of
the define and then patch it on the next version of the kernel.

Or we take the dts patches on the next version.

-- 
Alexandre Belloni, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com