From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.cvg.de (mail.cvg.de [62.153.82.30]) by mail.openembedded.org (Postfix) with ESMTP id 194AC60111 for ; Wed, 31 Aug 2016 23:54:05 +0000 (UTC) Received: from mail-mta-0.intern.sigma-chemnitz.de (mail-mta-0.intern.sigma-chemnitz.de [192.168.12.76]) by mailout-1.intern.sigma-chemnitz.de (8.14.7/8.14.7) with ESMTP id u7VNs2Yv017644 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK) for ; Thu, 1 Sep 2016 01:54:03 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sigma-chemnitz.de; s=v2012061000; t=1472687643; bh=qsA0/3Jx6ejHFXMdcHXQe2ISZcMR/Bcv7uPO0cpkY20=; h=From:To:Cc:Subject:References:Date:In-Reply-To:Message-ID: MIME-Version:Content-Type:Sender; b=BwSeXXoD6F3Fxe+js1u7CzIKe1jDiSMV/HvWu3j2gnck+DhiZJzQyYOtiF4jQz1Qp CiiKPGOg0j3hhbYRJLGZPVZLO7/JkNPQOW67FPg/DryZvJ2NInBbBhQwJu1uVgERKS DUPe20ROiR4ZVLq/baS4u20r5BJzDsb+RcnNzyEY= Received: from reddoxx.intern.sigma-chemnitz.de (reddoxx.intern.sigma-chemnitz.de [192.168.0.193]) by mail-mta-0.intern.sigma-chemnitz.de (8.14.7/8.14.7) with ESMTP id u7VNrkwf015423 for from enrico.scholz@sigma-chemnitz.de; Thu, 1 Sep 2016 01:53:46 +0200 Received: from mail-msa-0.intern.sigma-chemnitz.de ( [192.168.12.77]) by reddoxx.intern.sigma-chemnitz.de (Reddoxx engine) with SMTP id 3A353D807B6; Thu, 1 Sep 2016 01:53:23 +0200 Received: from ensc-virt.intern.sigma-chemnitz.de (ensc-virt.intern.sigma-chemnitz.de [192.168.3.24]) by mail-msa-0.intern.sigma-chemnitz.de (8.14.7/8.14.7) with ESMTP id u7VNrjL6015420 (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256 verify=NO); Thu, 1 Sep 2016 01:53:45 +0200 Received: from ensc by ensc-virt.intern.sigma-chemnitz.de with local (Exim 4.86_2) (envelope-from ) id 1bfFKC-0001AD-VF; Thu, 01 Sep 2016 01:53:45 +0200 From: Enrico Scholz To: Richard Purdie References: <1472662673.29583.90.camel@linuxfoundation.org> Date: Thu, 01 Sep 2016 01:53:44 +0200 In-Reply-To: <1472662673.29583.90.camel@linuxfoundation.org> (Richard Purdie's message of "Wed, 31 Aug 2016 17:57:53 +0100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.95 (gnu/linux) MIME-Version: 1.0 Sender: Enrico Scholz X-Spam-Score: -0.6 X-Spam-Tests: AWL,BAYES_00,DKIM_ADSP_ALL,RP_MATCHES_RCVD,SPF_NEUTRAL X-Scanned-By: MIMEDefang 2.78 Cc: openembedded-core@lists.openembedded.org Subject: Re: Replacement for tslib? X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 31 Aug 2016 23:54:06 -0000 Content-Type: text/plain Richard Purdie writes: >> tslib is more or less mandatory for resistive touchscreens but it was >> removed some days ago. This breaks e.g. meta-qt5 layer which depends >> on it. >> >> Is this removal really final (which would be really bad, because >> resistive touchscreens are used e.g. in industrial environments)? > [...] > Are you sure the kernel interfaces that xinput is using don't work for > qt4/qt5? I am not aware of any way how /dev/input/eventX values can be calibrated within the kernel. Most capacitive touchscreens are doing this calibration in hardware so that values correspond 1:1 to screen coordinates. But resistive touchscreens return usually only the raw 10-12 bit ADC values in ABS_X/Y. Enrico