[PATCH v4 0/3] drm/exynos: introduce generic zpos property

[Marek Szyprowski]

Hello all,

This patch series is a continuation of rework of blending support in
Exynos DRM driver. Some background can be found here:
http://www.spinics.net/lists/dri-devel/msg96969.html

Daniel Vetter suggested that zpos property should be made generic, with
well-defined semantics. This patchset is my proposal for such generic
zpos property:
- added zpos properties to drm core and plane state structures,
- added helpers for normalizing zpos properties of given set of planes,
- well defined semantics: planes are sorted by zpos values and then plane
  id value if zpos equals.

Patches are based on top of latest exynos-drm-next branch.

Best regards
Marek Szyprowski
Samsung R&D Institute Poland

Changelog:

v4:
- made min/max values of zpos property driver dependent (request of
  Ville Syrjälä)
- adjusted some comments

v3: http://www.spinics.net/lists/dri-devel/msg98207.html
- on request of Daniel Vetter, moved all normalization process to DRM
  core, drivers can simply use plane_state->normalized_zpos in their
  atomic_check/update callbacks with no additional changes needed
- updated documentation

v2: http://www.spinics.net/lists/dri-devel/msg98093.html
- dropped 2 fixes for Exynos DRM, which got merged in meantime
- added more comments and kernel docs for core functions as suggested
  by Daniel Vetter
- reworked initialization of zpos properties (moved assiging property
  class to common code), now the code in the driver is even simpler
- while reworking of intialization of zpos property code, did the same
  change to generic rotation property

v1: http://www.spinics.net/lists/dri-devel/msg97709.html
- initial version

Patch summary:


Marek Szyprowski (3):
  drm: add generic zpos property
  drm/exynos: use generic code for managing zpos plane property
  drm: simplify initialization of rotation property

 Documentation/DocBook/gpu.tmpl                  |  14 ++-
 drivers/gpu/drm/atmel-hlcdc/atmel_hlcdc_plane.c |  10 +-
 drivers/gpu/drm/drm_atomic.c                    |   4 +
 drivers/gpu/drm/drm_atomic_helper.c             | 118 ++++++++++++++++++++++++
 drivers/gpu/drm/drm_crtc.c                      |  96 +++++++++++++++++--
 drivers/gpu/drm/exynos/exynos_drm_drv.h         |   2 -
 drivers/gpu/drm/exynos/exynos_drm_plane.c       |  68 ++++----------
 drivers/gpu/drm/exynos/exynos_mixer.c           |   6 +-
 drivers/gpu/drm/i915/intel_display.c            |   6 +-
 drivers/gpu/drm/msm/mdp/mdp5/mdp5_plane.c       |   3 +-
 drivers/gpu/drm/omapdrm/omap_drv.c              |   3 +-
 include/drm/drm_crtc.h                          |  21 ++++-
 12 files changed, 271 insertions(+), 80 deletions(-)

-- 
1.9.2