From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934200AbaCSNKk (ORCPT ); Wed, 19 Mar 2014 09:10:40 -0400 Received: from mail.karo-electronics.de ([81.173.242.67]:50142 "EHLO mail.karo-electronics.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933804AbaCSNKh (ORCPT ); Wed, 19 Mar 2014 09:10:37 -0400 From: =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= To: Dmitry Torokhov , Fugang Duan , Grant Likely , Henrik Rydberg , Ian Campbell , Jingoo Han , Kumar Gala , Mark Rutland , Pawel Moll , Rob Herring , Rob Landley , Sachin Kamat , devicetree@vger.kernel.org, linux-doc@vger.kernel.org, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Simon Budig , =?UTF-8?q?Lothar=20Wa=C3=9Fmann?= Subject: [PATCHv4 4/5] Input: edt-ft5x06: Ignore touchdown events Date: Wed, 19 Mar 2014 14:09:22 +0100 Message-Id: <1395234563-11034-5-git-send-email-LW@KARO-electronics.de> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1395234563-11034-1-git-send-email-LW@KARO-electronics.de> References: <1395234563-11034-1-git-send-email-LW@KARO-electronics.de> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The chip may report invalid coordinates on touchdown events, so don't report the initial touchdown event. Signed-off-by: Lothar Waßmann --- drivers/input/touchscreen/edt-ft5x06.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/input/touchscreen/edt-ft5x06.c b/drivers/input/touchscreen/edt-ft5x06.c index 27dccfc..af736e4 100644 --- a/drivers/input/touchscreen/edt-ft5x06.c +++ b/drivers/input/touchscreen/edt-ft5x06.c @@ -175,6 +175,10 @@ static irqreturn_t edt_ft5x06_ts_isr(int irq, void *dev_id) if (type == TOUCH_EVENT_RESERVED) continue; + /* ignore TOUCH_DOWN events, might have bogus coordinates */ + if (type == TOUCH_EVENT_DOWN) + continue; + x = ((buf[0] << 8) | buf[1]) & 0x0fff; y = ((buf[2] << 8) | buf[3]) & 0x0fff; id = (buf[2] >> 4) & 0x0f; -- 1.7.10.4