[PATCH v4 0/4] Generic zpos property

[Benjamin Gaignard]

version 4:
make sure that normalized zpos value is stay in the defined property 
range and warn user if not.
Fix NULL pointer bug in rcar-du while setting zpos value.
No changes in the other drivers.

version 3:
use kmalloc_array instead of kmalloc.
Correct normalize_zpos computation (comeback to Mareck original code)

version 2:
add a zpos property into drm_plane structure to simplify code.
This allow to get/set zpos value in core and not in drivers code.
Fix various remarks.

version 1:
refactor Marek's patches to have per plane zpos property instead of only
one in core.

Benjamin Gaignard (3):
  drm: add generic zpos property
  drm: sti: use generic zpos for plane
  drm: rcar: use generic code for managing zpos plane property

Marek Szyprowski (1):
  drm/exynos: use generic code for managing zpos plane property

 Documentation/DocBook/gpu.tmpl            |  10 ++
 drivers/gpu/drm/Makefile                  |   2 +-
 drivers/gpu/drm/drm_atomic.c              |   4 +
 drivers/gpu/drm/drm_atomic_helper.c       |   6 +
 drivers/gpu/drm/drm_blend.c               | 230 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_crtc_internal.h       |   3 +
 drivers/gpu/drm/exynos/exynos_drm_drv.h   |   2 -
 drivers/gpu/drm/exynos/exynos_drm_plane.c |  67 ++-------
 drivers/gpu/drm/exynos/exynos_mixer.c     |   6 +-
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c    |   2 +-
 drivers/gpu/drm/rcar-du/rcar_du_drv.h     |   1 -
 drivers/gpu/drm/rcar-du/rcar_du_kms.c     |   5 -
 drivers/gpu/drm/rcar-du/rcar_du_plane.c   |   9 +-
 drivers/gpu/drm/rcar-du/rcar_du_plane.h   |   2 -
 drivers/gpu/drm/sti/sti_mixer.c           |   9 +-
 drivers/gpu/drm/sti/sti_plane.c           |  80 ++++-------
 drivers/gpu/drm/sti/sti_plane.h           |   2 -
 include/drm/drm_crtc.h                    |  30 ++++
 18 files changed, 331 insertions(+), 139 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_blend.c

Cc: Inki Dae <inki.dae at samsung.com>
Cc: Daniel Vetter <daniel at ffwll.ch>
Cc: Ville Syrjala <ville.syrjala at linux.intel.com>
Cc: Joonyoung Shim <jy0922.shim at samsung.com>
Cc: Seung-Woo Kim <sw0312.kim at samsung.com>
Cc: Andrzej Hajda <a.hajda at samsung.com>
Cc: Krzysztof Kozlowski <k.kozlowski at samsung.com>
Cc: Bartlomiej Zolnierkiewicz <b.zolnierkie at samsung.com>
Cc: Tobias Jakobi <tjakobi at math.uni-bielefeld.de>
Cc: Gustavo Padovan <gustavo at padovan.org>
Cc: vincent.abriou at st.com
Cc: fabien.dessenne at st.com
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
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1.9.1