[PULL REQUEST] Generic zpos property

[Benjamin Gaignard]

Hello Dave,

This pull request is for z-pos feature. It include generic code for new z-pos
property and functions to normalize it (in a new file named drm_blend.c)
Three drivers (exynos, rcard-du and sti) have been modified to take benefit
of this generic implementation of z-order.

I have to warn you that thoses commits are rebased on top of drm-next branch 
where git://linuxtv.org/media_tree.git vsp1 branch has been merged.

The following changes since commit 62c2cd0f49333a2bb53602ec23039ca99a19cb9d:

  Merge remote-tracking branch 'media_tree/vsp1' into generic-zpos-v8 (2016-07-29 09:38:55 +0200)

are available in the git repository at:

  http://git.linaro.org/people/benjamin.gaignard/kernel.git generic-zpos-v8

for you to fetch changes up to 2fc4d838aaf2607216eda5ce9dba18fa14422a31:

  drm: rcar: use generic code for managing zpos plane property (2016-07-29 10:03:10 +0200)

----------------------------------------------------------------
Benjamin Gaignard (2):
      drm: sti: use generic zpos for plane
      drm: rcar: use generic code for managing zpos plane property

Marek Szyprowski (2):
      drm: add generic zpos property
      drm/exynos: use generic code for managing zpos plane property

 Documentation/gpu/kms-properties.csv      |   1 +
 drivers/gpu/drm/Makefile                  |   2 +-
 drivers/gpu/drm/drm_atomic.c              |   4 +
 drivers/gpu/drm/drm_atomic_helper.c       |   7 +
 drivers/gpu/drm/drm_blend.c               | 238 ++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_crtc_internal.h       |   4 +
 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/rcar-du/rcar_du_vsp.c     |  14 +-
 drivers/gpu/drm/sti/sti_cursor.c          |   4 +-
 drivers/gpu/drm/sti/sti_gdp.c             |   4 +-
 drivers/gpu/drm/sti/sti_hqvdp.c           |   4 +-
 drivers/gpu/drm/sti/sti_mixer.c           |   9 +-
 drivers/gpu/drm/sti/sti_plane.c           |  78 ++++------
 drivers/gpu/drm/sti/sti_plane.h           |   7 +-
 include/drm/drm_crtc.h                    |  20 +++
 22 files changed, 334 insertions(+), 156 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_blend.c