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Date: Tue, 23 Sep 2008 10:51:13 +0200 From: Ondrej Zary <linux@...nbow-software.org> To: "Søren Hauberg" <hauberg@...il.com> Cc: linux-kernel@...r.kernel.org Subject: Re: [PATCH] usbtouchscreen, 2.6.25 On Tuesday 23 September 2008, Søren Hauberg wrote: > Hi, > Currently, the 'usbtouchscreen' module sends raw data from the > touchscreen directly to the user. However, in general, touchscreens > need to be calibrated, and the raw data needs to be transformed > according to the calibration, before the data can be used as an input > device. Currently, some special purpose drivers exists for this in X, > but the situation is a bit messy. I propose to add support for > calibration parameters in the kernel. That way, we can also get usable > touchscreens without X, without having to write special purpose > drivers to handle the data from the touchscreen. The attached patch > adds support for this. A module parameter (transform_xy) > enables/disables this behavior, so the patch is not very intrusive, > and should cause issues to current users. > > Comments would be appricated, Calibration is a per-device thing. You can have more than one touchscreen (the swap_xy feature is also wrong, but better than nothing). > Søren > > P.S. I'm not subscribed to the list so please keep me in the CC. -- Ondrej Zary -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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