Patches 1-2 already reviewed and ready to be applied.
Patch 4 is RFC and require more testing on real hardware.
[PATCH v4 1/4] drm/sun4i: Add alpha property for sun8i UI layer [PATCH v4 2/4] drm/sun4i: Add alpha property for sun8i and sun50i VI [PATCH v4 3/4] drm/sun4i: Add support for premulti/coverage blending [PATCH v4 4/4] RFC: drm/sun4i: Process alpha channel of most bottom layer
drivers/gpu/drm/sun4i/sun8i_mixer.h | 2 + drivers/gpu/drm/sun4i/sun8i_ui_layer.c | 50 ++++++++++++++++ drivers/gpu/drm/sun4i/sun8i_ui_layer.h | 10 ++++ drivers/gpu/drm/sun4i/sun8i_vi_layer.c | 72 +++++++++++++++++++++--- drivers/gpu/drm/sun4i/sun8i_vi_layer.h | 16 ++++++ 5 files changed, 142 insertions(+), 8 deletions(-)