[PATCH v4 0/6] HDMI 2.0: Scrambling in DRM layer

Shashank Sharma
2017-02-22T13:18:25Z

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.

V2:
- addressed review comments from Thierry, Ville and Dhinakaran
- added signed-off-by:self in first two patches(Jani N)

V3:
- addressed review comments from Jose and Jani

V4:
- addressed review comments from Maarten on patch 5,
rebase all other patches

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 | 60 ++++++++
drivers/gpu/drm/drm_scdc_helper.c | 275 ++++++++++++++++++++++++++++++++++
drivers/gpu/drm/i915/i915_reg.h | 4 +
drivers/gpu/drm/i915/intel_ddi.c | 28 ++++
drivers/gpu/drm/i915/intel_drv.h | 14 ++
drivers/gpu/drm/i915/intel_hdmi.c | 110 ++++++++++++++
include/drm/drm_connector.h | 52 +++++++
include/drm/drm_edid.h | 6 +-
include/drm/drm_scdc_helper.h | 173 +++++++++++++++++++++
include/linux/hdmi.h | 1 +
12 files changed, 736 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