Am Freitag, dem 21.08.2026 um 14:31 -0600 schrieb Alex Hung: > This looks like a fix for the same problem Melissa tried to address in > > https://lore.kernel.org/amd-gfx/ds0pr12mb65342aeded0d035dfa92e4189c...@ds0pr12mb6534.namprd12.prod.outlook.com/T/#mf6847a9e8d013adae40afa3c2ca0c64ebd3fcb50 > > Please advise if it is for a different issue. > > Thanks. > > On 8/21/26 13:42, Bert Karwatzki wrote: > > Am Freitag, dem 21.08.2026 um 14:47 -0400 schrieb Joshua Peisach: > > > On Fri Aug 14, 2026 at 11:17 AM EDT, Bert Karwatzki wrote: > > > > Previously drm_plane_create_blend_mode_property() was only called for > > > > planes of type DRM_PLANE_TYPE_OVERLAY. Since commit commit 860e748bddcc > > > > ("drm: ensure blend mode supported if pixel format with alpha exposed") > > > > this results in warnings from validate_blend_mode_for_alpha_formats(). > > > > We fix this here by calling drm_plane_create_blend_mode_property() for > > > > all plane types if the plane is supporting a format with > > > > per_pixel_alpha. > > > > > > > > Signed-off-by: Bert Karwatzki <[email protected]> > > > > --- > > > > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c | 5 ++++- > > > > drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c | 3 +-- > > > > 2 files changed, 5 insertions(+), 3 deletions(-) > > > > > > > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c > > > > b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c > > > > index 62eac6e65334..a6a54351ea56 100644 > > > > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c > > > > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crtc.c > > > > @@ -755,13 +755,16 @@ int amdgpu_dm_crtc_init(struct > > > > amdgpu_display_manager *dm, > > > > struct drm_plane *cursor_plane; > > > > bool has_degamma; > > > > int res = -ENOMEM; > > > > + struct dc_plane_cap dummy_cap = { > > > > + .per_pixel_alpha = 1, > > > > + }; > > > > > > > > cursor_plane = kzalloc_obj(*cursor_plane); > > > > if (!cursor_plane) > > > > goto fail; > > > > > > > > cursor_plane->type = DRM_PLANE_TYPE_CURSOR; > > > > - res = amdgpu_dm_plane_init(dm, cursor_plane, 0, NULL); > > > > + res = amdgpu_dm_plane_init(dm, cursor_plane, 0, &dummy_cap); > > > > > > > > acrtc = kzalloc_obj(struct amdgpu_crtc); > > > > if (!acrtc) > > > > diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c > > > > b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c > > > > index 824ef3ce5de0..4c0c6a8a0dac 100644 > > > > --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c > > > > +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_plane.c > > > > @@ -2208,8 +2208,7 @@ int amdgpu_dm_plane_init(struct > > > > amdgpu_display_manager *dm, > > > > if (res) > > > > return res; > > > > > > > > - if (plane->type == DRM_PLANE_TYPE_OVERLAY && > > > > - plane_cap && plane_cap->per_pixel_alpha) { > > > > + if (plane_cap && plane_cap->per_pixel_alpha) { > > > > unsigned int blend_caps = > > > > BIT(DRM_MODE_BLEND_PIXEL_NONE) | > > > > BIT(DRM_MODE_BLEND_PREMULTI) | > > > > BIT(DRM_MODE_BLEND_COVERAGE); > > > > > > Not sure where the full patch set is, but this does make the warning > > > go away. > > > > > > Tested-by: Joshua Peisach <[email protected]> > > > > This is actually the only patch, the 1/8 is an artifact from using > > git format-patch which I forgot to remove. > > > > Bert Karwatzki
Patch 2 of this series https://lore.kernel.org/amd-gfx/ds0pr12mb65342aeded0d035dfa92e4189c...@ds0pr12mb6534.namprd12.prod.outlook.com/T/#mf6847a9e8d013adae40afa3c2ca0c64ebd3fcb50 is fixing the same issue, I think. Bert Karwatzki
