[PATCH v2 0/2] drm/komeda: Add writeback downscaling split support

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Writeback split is also for workaround the size limitation of d71 scaler.
Like layer_split, writeback downscaling also can use two scalers to handle
the scaling half-by-half. The only differnence is writback needs a
standalone component (splitter)'s help to split the composition result.
The data pipeline of writeback split as below:

                   /-> scaler-0 ->\
 compiz -> splitter                merger -> wb_layer -> memory
                   \-> scaler-1 ->/

Depends on:
- https://patchwork.freedesktop.org/series/58710/
- https://patchwork.freedesktop.org/series/59000/
- https://patchwork.freedesktop.org/series/59002/
- https://patchwork.freedesktop.org/series/59747/
- https://patchwork.freedesktop.org/series/59915/
- https://patchwork.freedesktop.org/series/60083/
- https://patchwork.freedesktop.org/series/60698/
- https://patchwork.freedesktop.org/series/60856/
- https://patchwork.freedesktop.org/series/61079/
- https://patchwork.freedesktop.org/series/61081/

v2: Rebase

james qian wang (Arm Technology China) (2):
  drm/komeda: Add new component komeda_splitter
  drm/komeda: Enable writeback split support

 .../arm/display/komeda/d71/d71_component.c    |  63 ++++++++++
 .../drm/arm/display/komeda/komeda_pipeline.c  |   3 +
 .../drm/arm/display/komeda/komeda_pipeline.h  |  23 +++-
 .../display/komeda/komeda_pipeline_state.c    | 117 ++++++++++++++++--
 .../arm/display/komeda/komeda_private_obj.c   |  50 ++++++++
 .../arm/display/komeda/komeda_wb_connector.c  |  17 ++-
 6 files changed, 257 insertions(+), 16 deletions(-)

--
2.17.1
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