[Intel-gfx] [PATCH 0/6] HDMI 2.0: Scrambling support in DRM layer

[Shashank Sharma]

HDMI 2.0 spec defines a method to reduce the RF footprint while
operating at higher pixel clocks, which is called Scrambling.
Scrambling can be controlled over a new set of I2C registers
which are accessible over existing DDC I2C lines, called SCDC
register set.

This patch series contains 6 patches:
- First two patches add generic drm helper functions to read and
  write into SCDC registers. These patches are written by Thierry,
  in a patch series published here:
  https://patchwork.kernel.org/patch/9459051/
  Minor changes were done to map the patches into this series.
- Next two patches add functions for scrambling detection and
  scrambling control.
- Next two patches use this infrastructure in DRM layer from
  I915 driver, to enable scrambling on a GLK deivce which sports
  a native HDMI 2.0 controller.

Shashank Sharma (4):
  drm/edid: detect SCDC support in HF-VSDB
  drm: scrambling support in drm layer
  drm/i915: enable scrambling
  drm/i915: allow HDMI 2.0 clock rates

Thierry Reding (2):
  drm: Add SCDC helpers
  drm/edid: check for HF-VSDB block

 Documentation/gpu/drm-kms-helpers.rst |  12 +++
 drivers/gpu/drm/Makefile              |   3 +-
 drivers/gpu/drm/drm_edid.c            | 158 ++++++++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_scdc_helper.c     | 111 ++++++++++++++++++++++++
 drivers/gpu/drm/i915/i915_reg.h       |   2 +
 drivers/gpu/drm/i915/intel_ddi.c      |   5 ++
 drivers/gpu/drm/i915/intel_drv.h      |   2 +
 drivers/gpu/drm/i915/intel_hdmi.c     |  44 ++++++++++
 include/drm/drm_connector.h           |  50 +++++++++++
 include/drm/drm_edid.h                |   6 +-
 include/drm/drm_scdc_helper.h         | 132 ++++++++++++++++++++++++++++
 include/linux/hdmi.h                  |   1 +
 12 files changed, 524 insertions(+), 2 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_scdc_helper.c
 create mode 100644 include/drm/drm_scdc_helper.h

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1.9.1