tree bedd3c1ab80f129989801f060f8cfdeed584d881
parent c344ef2c9a9af619a10635e9ab1a3490a2856f21
author Charlie Mooney <charliemooney@chromium.org> 1479245983 -0800
committer chrome-bot <chrome-bot@chromium.org> 1479327061 -0800

Use the new product_id sysfs for Melfas updates

Previously the Melfas updater used the hw_version sysfs entry to
identify the specific touch IC that it's trying to update.  This has
been replaced by the new and improved product_id sysfs entry that
compliments a driver change that now suffixes the firmware filename
with the product ID when it requests the binary from /lib/firmware.

With this CL, the Melfas firmwares should now follow the typical
ChromeOS firmware naming convention with a product_id at the end of the
filename.

BUG=chrome-os-partner:56704
TEST=emerged and deployed on a Reks.  Rebooting triggers updates
correctly with the new filename format.  Everything went smoothly
when I updated to and back from old firmwares.

Change-Id: I95a3770e67f590158c0d7dbed47102423ea59e82
Signed-off-by: Charlie Mooney <charliemooney@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/411290
Reviewed-by: Andrew de los Reyes <adlr@chromium.org>