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drm/omap: Add 'alpha' and 'pixel blend mode' plane properties 

Add the following properties for planes:
* alpha
* pixel blend mode. Only "Pre-multiplied" and "Coverage" are supported

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190711135219.23402-1-jjhiblot@ti.com
This commit is contained in:
Jean-Jacques Hiblot 2019-07-11 15:52:19 +02:00 committed by Tomi Valkeinen
parent 0a9a4b611a
commit 3037e0c5e8
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/omapdrm/omap_plane.c
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@ -53,8 +53,12 @@ static void omap_plane_atomic_update(struct drm_plane *plane,
memset(&info, 0, sizeof(info));
info.rotation_type = OMAP_DSS_ROT_NONE;
info.rotation = DRM_MODE_ROTATE_0;
info.global_alpha = 0xff;
info.global_alpha = state->alpha >> 8;
info.zorder = state->normalized_zpos;
if (state->pixel_blend_mode == DRM_MODE_BLEND_PREMULTI)
info.pre_mult_alpha = 1;
else
info.pre_mult_alpha = 0;
/* update scanout: */
omap_framebuffer_update_scanout(state->fb, state, &info);
@ -285,6 +289,9 @@ struct drm_plane *omap_plane_init(struct drm_device *dev,
omap_plane_install_properties(plane, &plane->base);
drm_plane_create_zpos_property(plane, 0, 0, num_planes - 1);
drm_plane_create_alpha_property(plane);
drm_plane_create_blend_mode_property(plane, BIT(DRM_MODE_BLEND_PREMULTI) |
BIT(DRM_MODE_BLEND_COVERAGE));
return plane;