Better fit STI hardware structure.
Planes are no more responsible of updating mixer information such
as z-order and status. It is now up to the CRTC atomic flush to
do it. Plane actions (enable or disable) are performed atomically.
Disabling of a plane is synchronize with the vsync event.
Signed-off-by: NVincent Abriou <vincent.abriou@st.com>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@linaro.org>

replace all "sti_drm_" occurences by "sti_"
Signed-off-by: NVincent Abriou <vincent.abriou@st.com>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@linaro.org>

Purpose is to simplify the STI driver:
- remove layer structure
- consider video subdev as part of the compositor (like mixer subdev)
- remove useless STI_VID0 and STI_VID1 enum
Signed-off-by: NVincent Abriou <vincent.abriou@st.com>
Reviewed-by: NBenjamin Gaignard <benjamin.gaignard@linaro.org>

Make the link between all the hardware drivers and DRM/KMS interface.
Create the driver itself and make it register all the sub-components.
Use GEM CMA helpers for buffer allocation.
Signed-off-by: NBenjamin Gaignard <benjamin.gaignard@linaro.org>
Reviewed-by: NRob Clark <robdclark@gmail.com>