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| author | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-04-11 10:39:25 +0300 |
|---|---|---|
| committer | Maxime Ripard <maxime.ripard@bootlin.com> | 2018-04-16 22:17:29 +0300 |
| commit | ae0e28265e216dad11d4cbde42fc15e92919af78 (patch) | |
| tree | 08e84813756efaadf64b1be7ae953f62fb4a8a4f /include/drm/drm_blend.h | |
| parent | a08fc7c8056e75b08285a2ad955228002dcd86bc (diff) | |
| download | linux-ae0e28265e216dad11d4cbde42fc15e92919af78.tar.xz | |
drm/blend: Add a generic alpha property
Some drivers duplicate the logic to create a property to store a per-plane
alpha.
This is especially useful if we ever want to support extra protocols for
Wayland like:
https://lists.freedesktop.org/archives/wayland-devel/2017-August/034741.html
Let's create a helper in order to move that to the core.
Acked-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Sean Paul <seanpaul@chromium.org>
Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/6e1ce0db78fcfc407e94913c64819e65109d034d.1523432341.git-series.maxime.ripard@bootlin.com
Diffstat (limited to 'include/drm/drm_blend.h')
| -rw-r--r-- | include/drm/drm_blend.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/drm/drm_blend.h b/include/drm/drm_blend.h index 17606026590b..330c561c4c11 100644 --- a/include/drm/drm_blend.h +++ b/include/drm/drm_blend.h @@ -36,6 +36,9 @@ static inline bool drm_rotation_90_or_270(unsigned int rotation) return rotation & (DRM_MODE_ROTATE_90 | DRM_MODE_ROTATE_270); } +#define DRM_BLEND_ALPHA_OPAQUE 0xffff + +int drm_plane_create_alpha_property(struct drm_plane *plane); int drm_plane_create_rotation_property(struct drm_plane *plane, unsigned int rotation, unsigned int supported_rotations); |