From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753414AbcEMPSD (ORCPT ); Fri, 13 May 2016 11:18:03 -0400 Received: from zencphosting06.zen.co.uk ([82.71.204.9]:41629 "EHLO zencphosting06.zen.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752596AbcEMPSA (ORCPT ); Fri, 13 May 2016 11:18:00 -0400 Subject: Re: [PATCH v2 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L To: Dmitry Torokhov , Henrik Rydberg , Florian Echtler , Mauro Carvalho Chehab , Hans Verkuil References: <1462381638-7818-1-git-send-email-nick.dyer@itdev.co.uk> Cc: linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, linux-media@vger.kernel.org, Benjamin Tissoires , Benson Leung , Alan Bowens , Javier Martinez Canillas , Chris Healy , Andrew Duggan , James Chen , Dudley Du , Andrew de los Reyes , sheckylin@chromium.org, Peter Hutterer From: Nick Dyer Message-ID: <5735F01A.3010101@itdev.co.uk> Date: Fri, 13 May 2016 16:17:46 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:38.0) Gecko/20100101 Thunderbird/38.7.2 MIME-Version: 1.0 In-Reply-To: <1462381638-7818-1-git-send-email-nick.dyer@itdev.co.uk> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-OutGoing-Spam-Status: No, score=-1.5 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - zencphosting06.zen.co.uk X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - itdev.co.uk X-Get-Message-Sender-Via: zencphosting06.zen.co.uk: authenticated_id: nick.dyer@itdev.co.uk X-Authenticated-Sender: zencphosting06.zen.co.uk: nick.dyer@itdev.co.uk Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Mauro, Hans, Dmitry, Henrik- You kindly passed comment on this feature in its earlier form - would it be possible to have some feedback on the updates? It would be good to know whether we are on the right track with the V4L2 approach, because there is additional work that we want to base on it. best regards Nick On 04/05/2016 18:07, Nick Dyer wrote: > This is a series of patches to add diagnostic data support to the Atmel > maXTouch driver. It's a rewrite of the previous implementation which output via > debugfs: it now uses a V4L2 device in a similar way to the sur40 driver. > > There are significant performance advantages to putting this code into the > driver. The algorithm for retrieving the data has been fairly consistent > across a range of chips, with the exception of the mXT1386 series (see patch). > > We have a utility which can read the data and display it in a useful format: > https://github.com/ndyer/heatmap/commits/heatmap-v4l > > These patches are also available from > https://github.com/ndyer/linux/commits/diagnostic-v4l > > Changes in v2: > - Split pixfmt changes into separate commit and add DocBook > - Introduce VFL_TYPE_TOUCH_SENSOR and /dev/v4l-touch > - Remove "single node" support for now, it may be better to treat it as metadata later > - Explicitly set VFL_DIR_RX > - Fix Kconfig > > -- > To unsubscribe from this list: send the line "unsubscribe linux-input" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > >