[Intel-gfx] [PATCH v4 0/4] New debugfs API for capturing CRC of frames

[Tomeu Vizoso]

Hi,

this series basically takes the facility for continuously capturing CRCs
of frames from the i915 driver and into the DRM core.

The idea is that test suites such as IGT use this information to check
that frames that are exected to be identical, also have identical CRC
values.

Other drivers for hardware that can provide frame CRCs (including eDP
panels that support self-refresh) can easily implement the new callback
and provide userspace with the CRC values.

Thanks,

Tomeu

Tomeu Vizoso (4):
  drm/i915/debugfs: Move out pipe CRC code
  drm: Add API for capturing frame CRCs
  drm/i915: Use new CRC debugfs API
  drm/i915: Put "cooked" vlank counters in frame CRC lines

 Documentation/gpu/drm-uapi.rst        |    6 +
 drivers/gpu/drm/Makefile              |    3 +-
 drivers/gpu/drm/drm_crtc.c            |   12 +
 drivers/gpu/drm/drm_debugfs.c         |   36 +-
 drivers/gpu/drm/drm_debugfs_crc.c     |  368 ++++++++++++
 drivers/gpu/drm/drm_drv.c             |    9 +
 drivers/gpu/drm/drm_internal.h        |   10 +
 drivers/gpu/drm/i915/Makefile         |    2 +-
 drivers/gpu/drm/i915/i915_debugfs.c   |  892 +----------------------------
 drivers/gpu/drm/i915/i915_irq.c       |   69 ++-
 drivers/gpu/drm/i915/intel_display.c  |    1 +
 drivers/gpu/drm/i915/intel_drv.h      |    7 +
 drivers/gpu/drm/i915/intel_pipe_crc.c | 1001 +++++++++++++++++++++++++++++++++
 include/drm/drmP.h                    |    5 +
 include/drm/drm_crtc.h                |   41 ++
 include/drm/drm_debugfs_crc.h         |   74 +++
 16 files changed, 1619 insertions(+), 917 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_debugfs_crc.c
 create mode 100644 drivers/gpu/drm/i915/intel_pipe_crc.c
 create mode 100644 include/drm/drm_debugfs_crc.h

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2.7.4