From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hans de Goede Subject: [PATCH v2] alps: Document separate pointstick button bits for V2 alps devices Date: Wed, 15 Apr 2015 16:08:47 +0200 Message-ID: <1429106927-7443-1-git-send-email-hdegoede@redhat.com> Return-path: Received: from mx1.redhat.com ([209.132.183.28]:56027 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752289AbbDOOIz (ORCPT ); Wed, 15 Apr 2015 10:08:55 -0400 Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: Dmitry Torokhov Cc: Hans de Bruin , linux-input@vger.kernel.org, Hans de Goede Non interleaved dualpoint v2 devices have separate pointstick button bits, document this. Signed-off-by: Hans de Goede --- Changes in v2: -Document that the pointingstick packet button bits give the combined button status of both the stick and the touchpad buttons --- Documentation/input/alps.txt | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/Documentation/input/alps.txt b/Documentation/input/alps.txt index 92ae734..e301887d 100644 --- a/Documentation/input/alps.txt +++ b/Documentation/input/alps.txt @@ -94,6 +94,10 @@ PS/2 packet format Note that the device never signals overflow condition. +For protocol version 2 devices when the trackpoint is used, and no fingers +are on the touchpad, the M R L bits signal the combined status of both the +pointingstick and touchpad buttons. + ALPS Absolute Mode - Protocol Version 1 -------------------------------------- @@ -107,7 +111,7 @@ ALPS Absolute Mode - Protocol Version 1 ALPS Absolute Mode - Protocol Version 2 --------------------------------------- - byte 0: 1 ? ? ? 1 ? ? ? + byte 0: 1 ? ? ? 1 PSM PSR PSL byte 1: 0 x6 x5 x4 x3 x2 x1 x0 byte 2: 0 x10 x9 x8 x7 ? fin ges byte 3: 0 y9 y8 y7 1 M R L @@ -115,7 +119,8 @@ ALPS Absolute Mode - Protocol Version 2 byte 5: 0 z6 z5 z4 z3 z2 z1 z0 Protocol Version 2 DualPoint devices send standard PS/2 mouse packets for -the DualPoint Stick. +the DualPoint Stick. For non interleaved dualpoint devices the pointingstick +buttons get reported separately in the PSM, PSR and PSL bits. Dualpoint device -- interleaved packet format --------------------------------------------- -- 2.3.5