[PATCH v3 RESEND 00/24] drm/exynos: add support for GSCALER planes on Exynos5433

[Andrzej Hajda]

Hi Inki,

GSCALERs in Exynos SoCs support conversion between wide range of image formats,
plus scaling and rotation.
Driver already supports mem2mem mode - via ExynosDRM IPP framework.
This patchset adds support for mem to display mode - framebuffers can
be converted, scaled and send directly to Display Controller. From DRM
framework's point of view every GSCALER exposes drm_plane which can be connected
to display controller (display panel or TV).
The feature is not well documented so the development was quite difficult -
a process of trial and error, vendor code analysis, guessing from datasheets.
Hopefully most of the issues were solved. I have developed and tested it on
TM2 device with panel and TV paths.

The patchset contains three parts:
1. Preparatory patches - mostly cleanup and refactoring of drm_crtc and drm_plane
   related structures, to allow usage of planes which are not physically bound
   to crtcs (01-13).
2. Adding local path support to GSCALER and DECON (14-20).
3. Few fixes of bugs existing already in the code but discovered due to added
   local path support (21-23).

The patchset is based on exynos_drm_next plus my patchset adding zpos to DECON
and FIMD - 'drm/exynos: add support for dynamic zpos in DECON and FIMD' - it is
required to allow set z-pos position of GSCALER planes.
To simplify tests I have also created branch containing all required patches:
Repo: https://git.tizen.org/cgit/platform/kernel/linux-exynos
Branch: sandbox/ahajda/dev/exynos-drm-local-path

This is v2 version of the patchset. In this version I have moved code setting
cursor plane in crtc to separate patch together with code disabling fast cursor
updates - hardware does not support it. To keep bisectability DTS patches should
be applied before subsequent ones. It is rebased on today's exynos-drm-next.

Please be aware that DTS patches has been already applied to samsung-soc tree,
I left them here to simplify testing on exynos-drm-next, which is not in sync with
samsung-soc, for this reason I have moved them on the beginning of the patchset.

Regards
Andrzej


Andrzej Hajda (24):
  arm64: dts: exynos: configure GSCALER related clocks
  arm64: dts: exynos: add DSD/GSD clocks to DECONs and GSCALERs
  drm/exynos: remove exynos_drm_plane.h header
  drm/exynos: remove spare macro
  drm/exynos: drop exynos_drm_plane_config structure
  drm/exynos: add exynos_drm_crtc_init function
  drm/exynos/decon5433: embed exynos_drm_crtc directly into context
  drm/exynos/decon7: embed exynos_drm_crtc directly into context
  drm/exynos/fimd: embed exynos_drm_crtc directly into context
  drm/exynos/mixer: embed exynos_drm_crtc directly into context
  drm/exynos/vidi: embed exynos_drm_crtc directly into context
  drm/exynos: remove standalone exynos_drm_crtc leftovers
  drm/exynos/vidi: remove encoder_to_vidi helper
  drm/exynos: unify plane type assignment
  drm/exynos: set primary plane in exynos_drm_crtc_init
  drm/exynos: set cursor plane in exynos_drm_crtc_init
  drm/exynos: add plane update/disable callbacks for planes
  drm/exynos: add GSCALER plane capability
  drm/exynos/gscaler: fix id assignement
  drm/exynos/gscaler: add local path support
  drm/exynos/decon5433: add local path support
  drm/exynos/decon5433: wait for finish previous update
  drm/exynos/gscaler: change supported color format BGRX8888 to XBGR8888
  drm/exynos/gscaler: fix handling YVU420 pixel format

 .../dts/exynos/exynos5433-tm2-common.dtsi     |   6 +
 arch/arm64/boot/dts/exynos/exynos5433-tm2.dts |   6 +-
 arch/arm64/boot/dts/exynos/exynos5433.dtsi    |  25 +-
 drivers/gpu/drm/exynos/exynos5433_drm_decon.c | 162 ++++++++-----
 drivers/gpu/drm/exynos/exynos7_drm_decon.c    |  66 +++--
 drivers/gpu/drm/exynos/exynos_drm_crtc.c      |  46 ++--
 drivers/gpu/drm/exynos/exynos_drm_crtc.h      |   7 +-
 drivers/gpu/drm/exynos/exynos_drm_drv.c       |   1 -
 drivers/gpu/drm/exynos/exynos_drm_drv.h       |  50 ++--
 drivers/gpu/drm/exynos/exynos_drm_fb.c        |  10 +-
 drivers/gpu/drm/exynos/exynos_drm_fimd.c      |  85 +++----
 drivers/gpu/drm/exynos/exynos_drm_gsc.c       | 229 ++++++++++++++----
 drivers/gpu/drm/exynos/exynos_drm_plane.c     |  84 ++++---
 drivers/gpu/drm/exynos/exynos_drm_plane.h     |  14 --
 drivers/gpu/drm/exynos/exynos_drm_vidi.c      |  48 ++--
 drivers/gpu/drm/exynos/exynos_mixer.c         |  95 +++-----
 drivers/gpu/drm/exynos/regs-decon5433.h       |   6 +
 drivers/gpu/drm/exynos/regs-gsc.h             |   6 +
 18 files changed, 538 insertions(+), 408 deletions(-)
 delete mode 100644 drivers/gpu/drm/exynos/exynos_drm_plane.h

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2.17.1