Gen11 has to program 2 planes to enable planar formats. One scans out
the Y plane, the other the UV plane.
The UV plane is the plane that matters for Z-order and performs color
correction etc. The Y plane is always sprite 4 or 5, and only feeds Y
pixels directly to the chroma upsampler on the UV plane, which will
convert it to YUV444 that will be processed further without scaler.
If there's no chroma upsampler on a plane, it will be done by a scaler,
which needs to know the Y plane to take pixels from.
Maarten Lankhorst (15):
drm/i915: Clean up casts to crtc_state in intel_atomic_commit_tail()
drm/i915: Handle cursor updating active_planes correctly.
drm/i915: Make intel_crtc_disable_planes() use active planes mask.
drm/i915: Replace call to commit_planes_on_crtc with internal update,
v2.
drm/i915: Clean up scaler setup.
drm/i915: Force NV12 coordinates to be a multiple of 2
drm/i915: Unconditionally clear plane_state->visible flag
drm/i915/gen11: Enable 6 sprites on gen11
drm/i915/gen11: Link nv12 Y and UV planes in the atomic state, v2.
drm/i915/gen11: Handle watermarks correctly for separate Y/UV planes.
drm/i915: Move programming plane scaler to its own function.
drm/i915/gen11: Program the scalers correctly for planar formats.
drm/i915/gen11: Program the chroma upsampler for HDR planes.
drm/i915/gen11: Program the Y and UV plane for planar mode correctly.
drm/i915/gen11: Expose planar format support on gen11.
drivers/gpu/drm/i915/i915_reg.h | 32 +++-
drivers/gpu/drm/i915/intel_atomic.c | 112 +++++++-----
drivers/gpu/drm/i915/intel_atomic_plane.c | 155 ++++++++++++-----
drivers/gpu/drm/i915/intel_device_info.c | 5 +-
drivers/gpu/drm/i915/intel_display.c | 200 ++++++++++++++++------
drivers/gpu/drm/i915/intel_display.h | 3 +
drivers/gpu/drm/i915/intel_drv.h | 65 +++++++
drivers/gpu/drm/i915/intel_pm.c | 134 +++++++++------
drivers/gpu/drm/i915/intel_sprite.c | 161 +++++++++++------
9 files changed, 618 insertions(+), 249 deletions(-)
--
2.18.0
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