From: Ulrik De Bie <ulrik.debie-os@e2big.org>
Date: Mon, 6 Apr 2015 22:35:38 +0000 (-0700)
Subject: Input: elantech - fix absolute mode setting on some ASUS laptops
X-Git-Tag: v3.2.70~139
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a14933644ecedf73067b13ef10d73eb216d74858;p=pandora-kernel.git

Input: elantech - fix absolute mode setting on some ASUS laptops

commit bd884149aca61de269fd9bad83fe2a4232ffab21 upstream.

On ASUS TP500LN and X750JN, the touchpad absolute mode is reset each
time set_rate is done.

In order to fix this, we will verify the firmware version, and if it
matches the one in those laptops, the set_rate function is overloaded
with a function elantech_set_rate_restore_reg_07 that performs the
set_rate with the original function, followed by a restore of reg_07
(the register that sets the absolute mode on elantech v4 hardware).

Also the ASUS TP500LN and X750JN firmware version, capabilities, and
button constellation is added to elantech.c

Reported-and-tested-by: George Moutsopoulos <gmoutso@yahoo.co.uk>
Signed-off-by: Ulrik De Bie <ulrik.debie-os@e2big.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
[bwh: Backported to 3.2:
 - Adjust context
 - Drop the insertion into a comment we don't have]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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