[Differential] [Request, 20 lines] D3686: [platforms/hwcomposer] Support for hwcomposer 1.4 and 1.5 version

[bshah (Bhushan Shah)]

bshah created this revision.
bshah added reviewers: Plasma, graesslin.
Restricted Application added a project: KWin.
Restricted Application added subscribers: kwin, plasma-devel.

REVISION SUMMARY
  HWcomposer version 1.4 introduced setPowerMode, which replaces the
  blank(). This adds support for it. There are various code paths
  possible,
  
  - If KWin is built against hwcomposer 1.3 headers, then setPowerMode
  
  code is not compiled in, and it will use blank to turn display off.
  
  - If KWin is built against hwcomposer 1.4 headers, it will have
  
  setPowerMode code path compiled in. It will be used only on devices with
  1.4 and 1.5 version of hwcomposer.
  
  This is slightly insane, because Android can report hwcomposer 1.5 even
  when headers are of 1.4 version..

TEST PLAN
  Tested this on Nexus 5.X which reports 1.5 version of hwcomposer

REPOSITORY
  R108 KWin

BRANCH
  support-hwc-1.5

REVISION DETAIL
  https://phabricator.kde.org/D3686

AFFECTED FILES
  plugins/platforms/hwcomposer/hwcomposer_backend.cpp
  plugins/platforms/hwcomposer/hwcomposer_backend.h

EMAIL PREFERENCES
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To: bshah, #plasma, graesslin
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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