From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754386AbcEDRHa (ORCPT ); Wed, 4 May 2016 13:07:30 -0400 Received: from kdh-gw.itdev.co.uk ([89.21.227.133]:62402 "EHLO hermes.kdh.itdev.co.uk" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752292AbcEDRH1 (ORCPT ); Wed, 4 May 2016 13:07:27 -0400 From: Nick Dyer To: Dmitry Torokhov 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 , Henrik Rydberg , Andrew Duggan , James Chen , Dudley Du , Andrew de los Reyes , sheckylin@chromium.org, Peter Hutterer , Florian Echtler , mchehab@osg.samsung.com, hverkuil@xs4all.nl Subject: [PATCH v2 0/8] Input: atmel_mxt_ts - output raw touch diagnostic data via V4L Date: Wed, 4 May 2016 18:07:10 +0100 Message-Id: <1462381638-7818-1-git-send-email-nick.dyer@itdev.co.uk> X-Mailer: git-send-email 2.5.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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