linux-kernel - Re: [PATCH v8 3/8] drivers:input:tsc2007: add iio interface to read external ADC input and temperature

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Message-ID: <20161227215416.GB28140@dtor-ws>
Date:   Tue, 27 Dec 2016 13:54:16 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     "H. Nikolaus Schaller" <hns@...delico.com>
Cc:     Jonathan Cameron <jic23@...nel.org>,
        Jonathan Cameron <jic23@...23.retrosnub.co.uk>,
        Sebastian Reichel <sre@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Benoît Cousson <bcousson@...libre.com>,
        Tony Lindgren <tony@...mide.com>,
        Russell King <linux@...linux.org.uk>,
        Arnd Bergmann <arnd@...db.de>,
        Michael Welling <mwelling@...e.org>,
        Mika Penttilä <mika.penttila@...tfour.com>,
        Javier Martinez Canillas <javier@....samsung.com>,
        Igor Grinberg <grinberg@...pulab.co.il>,
        "Andrew F. Davis" <afd@...com>, Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Alexander Stein <alexander.stein@...tec-electronic.com>,
        Eric Engestrom <eric@...estrom.ch>,
        Hans de Goede <hdegoede@...hat.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Denis Carikli <denis@...rea.com>, Petr Cvek <petr.cvek@....cz>,
        linux-input@...r.kernel.org,
        devicetree <devicetree@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        linux-omap <linux-omap@...r.kernel.org>,
        Discussions about the Letux Kernel 
        <letux-kernel@...nphoenux.org>, linux-iio@...r.kernel.org,
        kernel@...a-handheld.com,
        "Yann E. MORIN" <yann.morin.1998@...e.fr>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: [PATCH v8 3/8] drivers:input:tsc2007: add iio interface to read
 external ADC input and temperature

On Mon, Dec 12, 2016 at 10:21:25PM +0100, H. Nikolaus Schaller wrote:
> Hi,
> 
> 
> > Am 27.11.2016 um 16:47 schrieb H. Nikolaus Schaller <hns@...delico.com>:
> > 
> > Hi Jonathan,
> > 
> >> Am 27.11.2016 um 12:02 schrieb Jonathan Cameron <jic23@...nel.org>:
> >> 
> >> On 24/11/16 18:05, H. Nikolaus Schaller wrote:
> >>> 
> >>>> Am 24.11.2016 um 18:38 schrieb Jonathan Cameron <jic23@...23.retrosnub.co.uk>:
> >>>> 
> >>>> 
> >>>> 
> >>>> On 22 November 2016 14:02:30 GMT+00:00, "H. Nikolaus Schaller" <hns@...delico.com> wrote:
> 
> > 
> >> - hence cc'd Yann and the Kbuild list
> >> to see if they can offer some advices.
> 
> no response / advice so far.

Since you are saying that IIO stuff is optional, add it to Kconfig
explicitly:

config "TOUCHSCREEN_TSC2007_IIO"
	bool "IIO interface for external ADC input and temperature"
	depends on TOUCHSCREEN_TSC2007
	depends on IIO=y || IIO=TOUCHSCREEN_TSC2007
	help
	  ...

and use this symbols in makefile:

and in Makefile:

obj-$(CONFIG_TOUCHSCREEN_TSC2007) += tsc2007.o
tsc2007-y := tsc2007-core.o ...
tsc2007-$(CONFIG_TOUCHSCREEN_TSC2007_IIO) += tsc2007_iio.o

Thanks.

-- 
Dmitry