Hi,
The following two patch will change the omapdrm to use the normalized_zpos when configuring the zpos/zorder of the planes.
In OMAP it is possible to move planes between crtcs freely and it is possible to move even the primary plane from one crtc to another, where it should not be treated as primary anymore (the crtc's primary plane is the primary for the crtc).
The first patch will adjust the sorting of the planes for the given crtc to make sure that the crtc's primary plane, if it has zpos=0 is going to be the bottom plane. If the zpos of the primary plane is changed by user space then we obey this and don't force the bottom position.
Regards, Peter --- Peter Ujfalusi (2): drm/blend: Account also the primary plane of the crtc for normalized_zpos drm/omap: Normalize the zpos and use the normalized_zpos in runtime
drivers/gpu/drm/drm_blend.c | 6 +++++- drivers/gpu/drm/omapdrm/omap_drv.c | 26 +++++++++++++++++++++++++- drivers/gpu/drm/omapdrm/omap_plane.c | 2 +- 3 files changed, 31 insertions(+), 3 deletions(-)