From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH v9 1/8] drivers:input:tsc2007: add new common binding
 names, pre-calibration, flipping and rotation
Date: Sun, 19 Feb 2017 15:17:15 +0100
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Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>, Sebastian Reichel <sre@kernel.org>, Mark Rutland <mark.rutland@arm.com>, =?iso-8859-1?Q?Beno=EEt?= Cousson <bcousson@baylibre.com>, Tony Lindgren <tony@atomide.com>, Russell King <linux@armlinux.org.uk>, Arnd Bergmann <arnd@arndb.de>, Michael Welling <mwelling@ieee.org>, Mika =?iso-8859-1?Q?Penttil=E4?= <mika.penttila@nextfour.com>, Javier Martinez Canillas <javier@osg.samsung.com>, Igor Grinberg <grinberg@compulab.co.il>, "Andrew F. Davis" <afd@ti.com>, Mark Brown <broonie@kernel.org>, Jonathan Cameron <jic23@kernel.org>, Rob Herring <robh+dt@kernel.org>, Alexander Stein <alexander.stein@systec-electronic.com>, Eric Engestrom <eric@engestrom.ch>, Hans de Goede <hdegoede@redhat.com>Benjamin Tissoires <be>


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Hi!

> About loosing precision: there is already noise (jitter) in
> real-world devices so that you can't achieve subpixel precision
> anyways (unless your panel has a very low resolution). Please see my
> answer to Dmitry some mails ago.

Maybe you can achieve better precision with averaging.

Anyway "input is already noisy" does not mean "so it is okay to
degrade it more". Solve it properly. That means passing calibration
data from kernel to userland.

Thanks,
									Pavel
--=20
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blo=
g.html

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