From: Tai-hwa Liang <avatar@sentelic.com>
Date: Mon, 26 Mar 2012 00:16:36 +0000 (-0700)
Subject: Input: sentelic - enabling absolute coordinates output for newer hardware
X-Git-Tag: v3.4-rc1~28^2~1^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a4c85075f00d56b38f5c277ab89f9aaad69eb17b;p=pandora-kernel.git

Input: sentelic - enabling absolute coordinates output for newer hardware

- Hooking multi-finger coordinates output with kernel multitouch library;
- Enabling absolute coordinates output for Cx+ hardware. The older hardware
  performs much better in relative mode; thus relative mode related code
  are preserved.

Part of the code is based on the work done by Oskari Saarenmaa <os@ohmu.fi>,
which was used to support the clickpad found on ASUS UX21/31 Ultrabook.
On the other hand, the FSP found on UX21/31 doesn't have hardware capability
register other than PnP ID, which means that we'll have to figure out an
alternative approach to identify such pad correctly; otherwise, blindly
adding INPUT_PROP_BUTTONPAD property may compatability issues amongst
existing FSPs.

Signed-off-by: Tai-hwa Liang <avatar@sentelic.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
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