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Date:   Mon, 20 Feb 2017 21:22:22 +0100
From:   "H. Nikolaus Schaller" <>
To:     Pavel Machek <>
Cc:     Andreas Kemnade <>,
        Mark Rutland <>,
        Andrey Gelman <>,
        Michel Verlaan <>,
        Nick Dyer <>,
        Tony Lindgren <>,,
        Benjamin Tissoires <>,, Russell King <>,
        Aaro Koskinen <>,
        Javier Martinez Canillas <>,
        Igor Grinberg <>,
        Hans Verkuil <>,,,
        Pali Rohár <>,
        Arnd Bergmann <>,
        Eric Engestrom <>,
        Hans de Goede <>,
        Rob Herring <>,
        Mika Penttilä <>,
        Mauro Carvalho Chehab <>,
        Petr Cvek <>,
        Siebren Vroegindeweij <>,
        Haibo Chen <>,
        Dmitry Torokhov <>,
        Sebastian Reichel <>,,
        "Andrew F. Davis" <>, Mark Brown <>,
        Benoît Cousson <>,, Michael Welling <>,, Jonathan Cameron <>,
        Alexander Stein <>
Subject: Re: [Letux-kernel] [PATCH v9 1/8] drivers:input:tsc2007: add new common binding names, pre-calibration, flipping and rotation


> Am 20.02.2017 um 20:32 schrieb Pavel Machek <>:
> Hi!
>>> But if you have userspace that depends on touchscreen to be
>>> calibrated... that _is_ wrong.
>> User-space people and real users have the opposite opinion. They
>> prefer if a touch is plug&play. I.e. without need for calibration.
> Some people prefer to calibrate their touchscreens; because of
> per-device variations, that gives better precision.
> You can pass default calibration data from device tree to kernel to
> userland. But you can not force people to use that calibration.

Yes, you can do that if you want. I hope it became clear by the formula
in my last mail.

I just want to be able to do it the other way for those users who don't
care about this per-device variation.


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