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Date: Thu, 21 Jul 2016 17:57:55 -0700 From: Dmitry Torokhov <dmitry.torokhov@...il.com> To: Peter Hutterer <peter.hutterer@...-t.net> Cc: Pavel Machek <pavel@....cz>, Michael Welling <mwelling@...e.org>, kernel list <linux-kernel@...r.kernel.org>, "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>, Pali Rohár <pali.rohar@...il.com>, Sebastian Reichel <sre@...nel.org>, "aaro.koskinen@....fi" <aaro.koskinen@....fi>, Ivaylo Dimitrov <ivo.g.dimitrov.75@...il.com>, Patrik Bachan <patrikbachan@...il.com>, serge@...lyn.com Subject: Re: v4.1 to v4.7: regression in tsc2005 driver On Thu, Jul 21, 2016 at 5:10 PM, Peter Hutterer <peter.hutterer@...-t.net> wrote: > On Thu, Jul 21, 2016 at 10:54:21AM +0200, Pavel Machek wrote: >> Should we have calibration info in the device tree, with kernel >> passing it to the x? >> >> Should kernel somehow do the calibration itself? > > if the kernel knows about the calibration it would make more sense to just > do it in the kernel directly. Historically we relied on userspace to perform calibration/transformation. Lately we've been introducing trivial transformations (inversion and axes swapping) and we allow plumbing this though DT; the rest I think is still better done in userspace (where you can do floating point, if desired). > but for anything even remotely run-time or > user-configured the xorg.conf snippet is the best solution. Thanks. -- Dmitry
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