[PATCH 00/10] Improve crc-core driver interface

[Mahesh Kumar]

This series improves crc-core <-> driver interface.
This series adds following functionality in the crc-core
 - Now control node will print all the available sources if
   implemented by driver along with current source.
 - Setting of sorce will fail if provided source is not supported
 - cleanup of crtc_crc_open function first allocate memory before
   enabling CRC generation
 - Don't block open() call instead wait in crc read call.

Following IGT will fail due to crc-core <-> driver interface change
igt at kms_pipe_crc_basic@bad-source <now setting bad-source itself will fail>
ig at kms_pipe_crc_basic@nonblocking-crc-pipe-X 
ig at kms_pipe_crc_basic@nonblocking-crc-pipe-X-frame-sequence
In nonblocking crc tests we'll get lesser crc's due to skipping crc

AMD/Rockchip/rcar code path is not validated and need inputs

Changes:
 - Add dri-devel in Cc
Changes rev2:
 - now get_crc_sources returns a constant pointer to an array of
   source list and crc-core does the verification

Cc: dri-devel at lists.freedesktop.org

Mahesh Kumar (10):
  drm: crc: Introduce verify_crc_source callback
  drm: crc: Introduce pre_crc_read function
  drm: crc: Introduce get_crc_sources callback
  drm/rockchip/crc: Implement verify_crc_source callback
  drm/amdgpu_dm/crc: Implement verify_crc_source callback
  drm/rcar-du/crc: Implement verify_crc_source callback
  drm/i915/crc: implement verify_crc_source callback
  drm/i915/crc: implement get_crc_sources callback
  drm/crc: Cleanup crtc_crc_open function
  Revert "drm: crc: Wait for a frame before returning from open()"

 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c  |   1 +
 drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h  |   7 +-
 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_crc.c  |  20 +++-
 drivers/gpu/drm/drm_debugfs_crc.c                  |  78 ++++++++------
 drivers/gpu/drm/i915/intel_display.c               |   2 +
 drivers/gpu/drm/i915/intel_drv.h                   |   8 +-
 drivers/gpu/drm/i915/intel_pipe_crc.c              | 118 ++++++++++++++++++++-
 drivers/gpu/drm/rcar-du/rcar_du_crtc.c             |  45 +++++++-
 drivers/gpu/drm/rockchip/rockchip_drm_vop.c        |  26 ++++-
 include/drm/drm_crtc.h                             |  47 +++++++-
 10 files changed, 301 insertions(+), 51 deletions(-)

-- 
2.16.2