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drm/tegra: Add blend mode properties

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The default programming in the driver matches the "coverage" blend mode,
so add the corresponding pixel blend mode property to let userspace know
about it.

Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patch.msgid.link/20260826105421.1825331-1-thierry.reding@kernel.org
This commit is contained in:
Thierry Reding 2026-08-26 12:54:21 +02:00
parent 2d2a3adc91
commit 20839d02c0
2 changed files with 8 additions and 0 deletions
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6
drivers/gpu/drm/tegra/dc.c
View File

@ -904,6 +904,7 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
struct tegra_dc *dc)
{
unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
unsigned int blend_caps = BIT(DRM_MODE_BLEND_COVERAGE);
enum drm_plane_type type = DRM_PLANE_TYPE_PRIMARY;
struct tegra_plane *plane;
unsigned int num_formats;
@ -939,6 +940,7 @@ static struct drm_plane *tegra_primary_plane_create(struct drm_device *drm,
}
drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
drm_plane_create_blend_mode_property(&plane->base, blend_caps);
drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
err = drm_plane_create_rotation_property(&plane->base,
@ -1209,6 +1211,7 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
struct tegra_dc *dc)
{
unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
unsigned int blend_caps = BIT(DRM_MODE_BLEND_COVERAGE);
struct tegra_plane *plane;
unsigned int num_formats;
const u32 *formats;
@ -1252,6 +1255,7 @@ static struct drm_plane *tegra_dc_cursor_plane_create(struct drm_device *drm,
}
drm_plane_helper_add(&plane->base, &tegra_cursor_plane_helper_funcs);
drm_plane_create_blend_mode_property(&plane->base, blend_caps);
drm_plane_create_zpos_immutable_property(&plane->base, 255);
return &plane->base;
@ -1356,6 +1360,7 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
bool cursor)
{
unsigned long possible_crtcs = tegra_plane_get_possible_crtcs(drm);
unsigned int blend_caps = BIT(DRM_MODE_BLEND_COVERAGE);
struct tegra_plane *plane;
unsigned int num_formats;
enum drm_plane_type type;
@ -1394,6 +1399,7 @@ static struct drm_plane *tegra_dc_overlay_plane_create(struct drm_device *drm,
}
drm_plane_helper_add(&plane->base, &tegra_plane_helper_funcs);
drm_plane_create_blend_mode_property(&plane->base, blend_caps);
drm_plane_create_zpos_property(&plane->base, plane->index, 0, 255);
err = drm_plane_create_rotation_property(&plane->base,

2
drivers/gpu/drm/tegra/hub.c
View File

@ -759,6 +759,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
unsigned int index,
enum drm_plane_type type)
{
unsigned int blend_caps = BIT(DRM_MODE_BLEND_COVERAGE);
struct tegra_drm *tegra = drm->dev_private;
struct tegra_display_hub *hub = tegra->hub;
struct tegra_shared_plane *plane;
@ -797,6 +798,7 @@ struct drm_plane *tegra_shared_plane_create(struct drm_device *drm,
}
drm_plane_helper_add(p, &tegra_shared_plane_helper_funcs);
drm_plane_create_blend_mode_property(p, blend_caps);
drm_plane_create_zpos_property(p, 0, 0, 255);
return p;