[PATCH 0/6] drm: zpos normalization cleanup and omapdrm to use it

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Hi,

The first patch is adding a flag to drm_device that drivers can set if they want
the zpos to be normalized.

Then convert exynos, tegra, sti and rcar-du to use this flag instead of
re-implementing the drm_atomic_helper_check() locally just to add the call to
drm_atomic_normalize_zpos().

The last patch is moving omapdrm to use the zpos normalization as well to comply
with the UAPI documentation regarding to zpos.

Laurent's note in an earlier thread:
https://marc.info/?l=dri-devel&m=151567355225029&w=2

"The problem is that zpos normalization requires accessing the state of all 
enabled planes for a CRTC in order to compute (and store) the normalized zpos 
values. This thus forces all planes to be added to the commit state, even when 
the commit doesn't touch the zpos property. I assume this caused issues 
(possibly performance issues) in drivers that then performed hardware setup of 
all planes as a result."

can be addressed later in the core for all users of drm_atomic_normalize_zpos()

Regards,
Peter
---
Peter Ujfalusi (6):
  drm: Add drm_device->normalize_zpos boolean
  drm/exynos: Let core take care of normalizing the zpos
  drm/tegra: Let core take care of normalizing the zpos
  drm/sti: Let core take care of normalizing the zpos
  drm: rcar-du: Let core take care of normalizing the zpos
  drm/omap: Use normalized zpos for plane placement

 drivers/gpu/drm/drm_atomic_helper.c     |  6 ++++++
 drivers/gpu/drm/exynos/exynos_drm_drv.c | 21 +--------------------
 drivers/gpu/drm/exynos/exynos_drm_drv.h |  1 -
 drivers/gpu/drm/exynos/exynos_drm_fb.c  |  2 +-
 drivers/gpu/drm/omapdrm/omap_drv.c      |  1 +
 drivers/gpu/drm/omapdrm/omap_plane.c    |  2 +-
 drivers/gpu/drm/rcar-du/rcar_du_drv.c   |  1 +
 drivers/gpu/drm/rcar-du/rcar_du_kms.c   | 10 +---------
 drivers/gpu/drm/sti/sti_drv.c           | 23 ++---------------------
 drivers/gpu/drm/tegra/drm.c             | 27 +++------------------------
 include/drm/drm_device.h                |  8 ++++++++
 11 files changed, 25 insertions(+), 77 deletions(-)

-- 
Peter

Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki.
Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

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