Nicolas Boichat 8151b3f7e6 touchpad_elan: Read resolution and validate against build-time values
At init time, read resolution/dpi from trackpad, and check that
logical/physical dimensions match the expected values, provided
at build-time.

BRANCH=none
BUG=b:38277869
TEST=Flash staff, no error message at boot time. Flash hammer image
     onto staff, a warning is shown at boot time.

Change-Id: I5ef7d25b6e6525c2bd6fc023f58f3a242134d962
Reviewed-on: https://chromium-review.googlesource.com/505857
Commit-Ready: Nicolas Boichat <drinkcat@chromium.org>
Tested-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
2017-05-18 02:26:08 -07:00
2016-11-10 21:28:33 -08:00
2017-05-16 20:55:50 -07:00
2012-05-11 09:11:52 -07:00
2014-04-02 19:58:53 +00:00
2015-12-08 20:05:05 -08:00

For an overview of the Embedded Controller firmware, refer to

http://www.chromium.org/chromium-os/2014-firmware-summit

For instructions on building from source, refer to

http://www.chromium.org/chromium-os/ec-development/getting-started-building-ec-images-quickly
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