From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Henrik Rydberg" Subject: Re: Question: I2C touchscreen controller Date: Thu, 25 Aug 2011 09:23:24 +0200 Message-ID: <20110825072324.GA4065@polaris.bitmath.org> References: <20110824195436.GA13228@core.coreip.homeip.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from smtprelay-h22.telenor.se ([195.54.99.197]:50311 "EHLO smtprelay-h22.telenor.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750903Ab1HYHVZ (ORCPT ); Thu, 25 Aug 2011 03:21:25 -0400 Received: from ipb4.telenor.se (ipb4.telenor.se [195.54.127.167]) by smtprelay-h22.telenor.se (Postfix) with ESMTP id 133D3D5ED for ; Thu, 25 Aug 2011 09:21:24 +0200 (CEST) Content-Disposition: inline In-Reply-To: Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: H Hartley Sweeten Cc: Dmitry Torokhov , "linux-input@vger.kernel.org" > It looks like these are the current I2C touchscreen drivers in mainline: > > CONFIG_TOUCHSCREEN_88PM860X pmic mfd device? probably not standalone > CONFIG_TOUCHSCREEN_AD7879_I2C datasheet looks simple enough > CONFIG_TOUCHSCREEN_ATMEL_MXT needs firmware? probably complicated > CONFIG_TOUCHSCREEN_BU21013 can't find a datasheet > CONFIG_TOUCHSCREEN_CY8CTMG110 looks like the chip may be obsolete > CONFIG_TOUCHSCREEN_MAX11801 Maxim usually has long lead times > CONFIG_TOUCHSCREEN_MCS5000 can't find a datasheet > CONFIG_TOUCHSCREEN_STMPE datasheet looks simple enough > CONFIG_TOUCHSCREEN_TSC2007 datasheet looks simple enough > > Based on that I'm considering the Analog Devices, STMicro, and TI parts. > > Do you know if any of these work better than the others? Out of those, bu21013 (and st1232 not on your list) are dual touch, and atmel_mxt is true multitouch. The rest are single touch. Cheers, Henrik