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| author | Takanari Hayama <taki@igel.co.jp> | 2022-08-10 10:37:10 +0200 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2022-09-07 22:48:39 +0200 |
| commit | b07f5a4d4457a047104315190930a06fc5f26391 (patch) | |
| tree | 82a154f22699ce0c4d59cdcec884eadef686a9a3 /drivers/gpu/drm/rcar-du | |
| parent | media: vsp1: Add premultiplied alpha support (diff) | |
| download | linux-b07f5a4d4457a047104315190930a06fc5f26391.tar.xz linux-b07f5a4d4457a047104315190930a06fc5f26391.zip | |
drm: rcar-du: Add DRM_MODE_BLEND_PREMULTI support
R-Car DU driver implicitly supports DRM_MODE_BLEND_COVERAGE only.
This adds a support for DRM_MODE_BLEND_PREMULTI. As a consequence,
DRM_MODE_BLEND_PREMULTI becomes the default. If DRM_MODE_BLEND_COVERAGE
is desired, it should be set explicitly.
This behavior comes from how DRM blend mode is supported.
drm_plane_create_blend_mode_property() creates the blend mode property
with the default value of DRM_MODE_BLEND_PREMULTI. This default value
cannot be modified from the atomic driver.
Signed-off-by: Takanari Hayama <taki@igel.co.jp>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_vsp.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c index 10b7f1d0877a..3d560969b59c 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_vsp.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_vsp.c @@ -171,6 +171,8 @@ static void rcar_du_vsp_plane_setup(struct rcar_du_vsp_plane *plane) format = rcar_du_format_info(state->format->fourcc); cfg.pixelformat = format->v4l2; + cfg.premult = state->state.pixel_blend_mode == DRM_MODE_BLEND_PREMULTI; + vsp1_du_atomic_update(plane->vsp->vsp, crtc->vsp_pipe, plane->index, &cfg); } @@ -436,6 +438,10 @@ int rcar_du_vsp_init(struct rcar_du_vsp *vsp, struct device_node *np, drm_plane_create_zpos_property(&plane->plane, i, 0, num_planes - 1); + drm_plane_create_blend_mode_property(&plane->plane, + BIT(DRM_MODE_BLEND_PREMULTI) | + BIT(DRM_MODE_BLEND_COVERAGE)); + vsp->num_planes++; } |