lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Input: elantech - provide a workaround for jumpy cursor on firmware 2.34

Browse Source 
It seems that Elantech touchpad firmware version 2.34 on the Hercules eCAFÉ
suffers from a problem where bogus coordinates get reported at the beginning
of a touch action. This causes the mouse cursor or the scrolled page to
jump.

Included patch provides a workaround that discards mouse packets that are
likely to contain bogus coordinates. The workaround is activated when we
detect touchpad with fimware version 2.34.

Signed-off-by: Arjan Opmeer <arjan@opmeer.net>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Arjan Opmeer
2009-04-18 19:05:40 -07:00
committed by Dmitry Torokhov
parent 3deb649e65
commit 3f8c0df43d
2 changed files with 28 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/input/mouse/elantech.h
View File

@@ -1,7 +1,7 @@
/*
* Elantech Touchpad driver (v5)
* Elantech Touchpad driver (v6)
*
* Copyright (C) 2007-2008 Arjan Opmeer <arjan@opmeer.net>
* Copyright (C) 2007-2009 Arjan Opmeer <arjan@opmeer.net>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
@@ -104,6 +104,7 @@ struct elantech_data {
unsigned char fw_version_min;
unsigned char hw_version;
unsigned char paritycheck;
unsigned char jumpy_cursor;
unsigned char parity[256];
};