From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Hutterer Subject: [PATCH] Input: document INPUT_PROP_TOPBUTTONPAD Date: Tue, 22 Jul 2014 10:00:18 +1000 Message-ID: <20140722000018.GA10920@jelly.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from leo.clearchain.com ([199.73.29.74]:19944 "EHLO mail.clearchain.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751048AbaGVAAV (ORCPT ); Mon, 21 Jul 2014 20:00:21 -0400 Content-Disposition: inline Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: linux-input@vger.kernel.org, Hans de Goede Signed-off-by: Peter Hutterer --- Documentation/input/event-codes.txt | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/input/event-codes.txt b/Documentation/input/event-codes.txt index f82ba9c..7ff7bf4 100644 --- a/Documentation/input/event-codes.txt +++ b/Documentation/input/event-codes.txt @@ -281,6 +281,19 @@ gestures can normally be extracted from it. If INPUT_PROP_SEMI_MT is not set, the device is assumed to be a true MT device. +INPUT_PROP_TOPBUTTONPAD: +----------------------- +Some laptops, most notably the Lenovo *40 series provide a trackstick +device but do not have physical buttons associated with the trackstick +device. Instead, the top area of the touchpad is marked to show +visual/haptic areas for left, middle, right buttons intended to be used +with the trackstick. + +If INPUT_PROP_TOPBUTTONPAD is set, userspace should emulate buttons +accordingly. This property does not affect kernel behavior. +The kernel does not provide button emulation for such devices but treats +them as any other INPUT_PROP_BUTTONPAD device. + Guidelines: ========== The guidelines below ensure proper single-touch and multi-finger functionality. -- 1.9.3