[Intel-gfx] [PATCH v5 00/28] Display Stream Compression enabling on eDP/DP

[Manasi Navare]

VESA has developed an industry standard Display Stream Compression(DSC)
for interoperable, visually lossless compression over display links to
address the needs for higher resolution displays.

This patch series enables DSC on Gen 10 eDP and Gen 11 eDP/DP panels.
This implementation is based on VESA DP 1.4 and DSC specifications.

These patches have been validated on 1080p eDP 1.4 panel with DSC support
and FPGA based DP 1.4 sink device for following configurations:

- DSC with both VDSC engines enabled
- DSC with only Left VDSC engine enabled
- DSC for Input = 24bpp, Output = 8bpp
- DSC for Input = 24bpp, Output = 10bpp
- DSC for Input = 24bpp, output = 12bpp

This patch series is a spin of some patches in the previous series:
https://patchwork.freedesktop.org/series/47514/ based on review comments.

Additionally this also adds some DSC support debugfs nodes for IGT tests.
Corresponding IGT test sent to the igt-dev M-L.

Anusha Srivatsa (1):
  drm/i915/dsc: Add slice_row_per_frame in DSC PPS programming

Gaurav K Singh (4):
  drm/dsc: Define VESA Display Stream Compression Capabilities
  drm/i915/dsc: Define & Compute VESA DSC params
  drm/i915/dsc: Compute Rate Control parameters for DSC
  drm/i915/dp: Enable/Disable DSC in DP Sink

Manasi Navare (21):
  drm/dp: Add DP DSC DPCD receiver capability size define and missing
    SHIFT
  drm/i915/dp: Cache the DP/eDP DSC DPCD register set on Hotplug/eDP
    Init
  drm/dp: DRM DP helper/macros to get DP sink DSC parameters
  drm/i915/dp: Add helpers for Compressed BPP and Slice Count for DSC
  drm/i915/dp: Validate modes using max Output BPP and slice count when
    DSC supported
  drm/dp: Define payload size for DP SDP PPS packet
  drm/dsc: Define Display Stream Compression PPS infoframe
  drm/dsc: Add helpers for DSC picture parameter set infoframes
  drm/i915/dp: Add DSC params and DSC config to intel_crtc_state
  drm/i915/dp: Compute DSC pipe config in atomic check
  drm/i915/dp: Do not enable PSR2 if DSC is enabled
  drm/dsc: Define the DSC 1.1 and 1.2 Line Buffer depth constants
  drm/i915/dsc: Add a power domain for VDSC on eDP/MIPI DSI
  drm/i915/dp: Configure i915 Picture parameter Set registers during DSC
    enabling
  drm/i915/dp: Use the existing write_infoframe() for DSC PPS SDPs
  drm/i915/dp: Populate DSC PPS SDP and send PPS infoframes
  drm/i915/dp: Configure Display stream splitter registers during DSC
    enable
  drm/i915/dp: Disable DSC in source by disabling DSS CTL bits
  drm/i915/dsc: Enable and disable appropriate power wells for VDSC
  drm/i915/dsc: Add Per connector debugfs node for DSC support/enable
  drm/i915/dsc: Force DSC enable if requested by IGT/userspace

Srivatsa, Anusha (2):
  drm/dsc: Define Rate Control values that do not change over
    configurations
  drm/i915/icl: Add Display Stream Splitter control registers

 Documentation/gpu/drm-kms-helpers.rst   |   12 +
 drivers/gpu/drm/Makefile                |    2 +-
 drivers/gpu/drm/drm_dp_helper.c         |   90 ++
 drivers/gpu/drm/drm_dsc.c               |  223 +++++
 drivers/gpu/drm/i915/Makefile           |    3 +-
 drivers/gpu/drm/i915/i915_debugfs.c     |   83 +-
 drivers/gpu/drm/i915/i915_drv.h         |    5 +
 drivers/gpu/drm/i915/i915_reg.h         |   35 +
 drivers/gpu/drm/i915/intel_ddi.c        |    5 +
 drivers/gpu/drm/i915/intel_display.c    |   39 +-
 drivers/gpu/drm/i915/intel_display.h    |    4 +-
 drivers/gpu/drm/i915/intel_dp.c         |  361 +++++++-
 drivers/gpu/drm/i915/intel_dp_mst.c     |    2 +-
 drivers/gpu/drm/i915/intel_drv.h        |   24 +
 drivers/gpu/drm/i915/intel_hdmi.c       |   23 +-
 drivers/gpu/drm/i915/intel_psr.c        |   16 +-
 drivers/gpu/drm/i915/intel_runtime_pm.c |    4 +-
 drivers/gpu/drm/i915/intel_vdsc.c       | 1101 +++++++++++++++++++++++
 include/drm/drm_dp_helper.h             |   40 +
 include/drm/drm_dsc.h                   |  491 ++++++++++
 20 files changed, 2513 insertions(+), 50 deletions(-)
 create mode 100644 drivers/gpu/drm/drm_dsc.c
 create mode 100644 drivers/gpu/drm/i915/intel_vdsc.c
 create mode 100644 include/drm/drm_dsc.h

-- 
2.18.0