On Mon, 28 Aug 2023 17:05:07 -0700 Jessica Zhang <quic_jesszhan@xxxxxxxxxxx> wrote: > Add support for pixel_source property to drm_plane and related > documentation. In addition, force pixel_source to > DRM_PLANE_PIXEL_SOURCE_FB in DRM_IOCTL_MODE_SETPLANE as to not break > legacy userspace. > > This enum property will allow user to specify a pixel source for the > plane. Possible pixel sources will be defined in the > drm_plane_pixel_source enum. > > Currently, the only pixel sources are DRM_PLANE_PIXEL_SOURCE_FB (the > default value) and DRM_PLANE_PIXEL_SOURCE_NONE. > > Signed-off-by: Jessica Zhang <quic_jesszhan@xxxxxxxxxxx> > --- > drivers/gpu/drm/drm_atomic_state_helper.c | 1 + > drivers/gpu/drm/drm_atomic_uapi.c | 4 ++ > drivers/gpu/drm/drm_blend.c | 90 +++++++++++++++++++++++++++++++ > drivers/gpu/drm/drm_plane.c | 19 +++++-- > include/drm/drm_blend.h | 2 + > include/drm/drm_plane.h | 21 ++++++++ > 6 files changed, 133 insertions(+), 4 deletions(-) ... > diff --git a/drivers/gpu/drm/drm_blend.c b/drivers/gpu/drm/drm_blend.c > index 6e74de833466..c3c57bae06b7 100644 > --- a/drivers/gpu/drm/drm_blend.c > +++ b/drivers/gpu/drm/drm_blend.c > @@ -185,6 +185,21 @@ > * plane does not expose the "alpha" property, then this is > * assumed to be 1.0 > * > + * pixel_source: > + * pixel_source is set up with drm_plane_create_pixel_source_property(). > + * It is used to toggle the active source of pixel data for the plane. > + * The plane will only display data from the set pixel_source -- any > + * data from other sources will be ignored. > + * > + * Possible values: > + * > + * "NONE": > + * No active pixel source. > + * Committing with a NONE pixel source will disable the plane. > + * > + * "FB": > + * Framebuffer source set by the "FB_ID" property. > + * > * Note that all the property extensions described here apply either to the > * plane or the CRTC (e.g. for the background color, which currently is not > * exposed and assumed to be black). This UAPI: Acked-by: Pekka Paalanen <pekka.paalanen@xxxxxxxxxxxxx> Thanks, pq
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