[PATCH v2 0/3] Add DRM pixel blend mode support to R-Car DU

[Takanari Hayama]

The series of patches adds support for DRM pixel blend mode to R-Car DU
driver. The current R-Car DU implicitly supports "Coverage" only.

Unfortunately, this changes the default blending mode of R-Car DU to
"Pre-multiplied" which is the default when pixel blend mode is
supported.

v2:
 vsp1:
 - Add a premult flag instead of blend mode enum
 rcar-du:
 - Support DRM_MODE_BLEND_PREMULTI via the premult flag
 - Support DRM_MODE_BLEND_PIXEL_NONE via format override [1]

[1] https://lore.kernel.org/linux-renesas-soc/20220704025231.3911138-1-taki@igel.co.jp/T/#m3351cb5965cd5bf2d416fa5ca5007773260205bd

Takanari Hayama (3):
  media: vsp1: add premultiplied alpha support
  drm: rcar-du: Add DRM_MODE_BLEND_PREMULTI support
  drm: rcar-du: Add DRM_MODE_BLEND_PIXEL_NONE support

 drivers/gpu/drm/rcar-du/rcar_du_vsp.c         | 26 ++++++++++++++++++-
 .../media/platform/renesas/vsp1/vsp1_drm.c    |  2 ++
 include/media/vsp1.h                          |  2 ++
 3 files changed, 29 insertions(+), 1 deletion(-)

-- 
2.25.1