[PATCH 00/19] Fix Adaptive Sync SDP for PR with Link ON + Auxless ALPM

[Ankit Nautiyal <ankit.k.nautiyal@intel.com>]

Enable Adaptive Sync SDP for Panel replay + auxless ALPM.
First few patches are fixes in existing AS SDP enablement.
Later patches add the support to send AS SDP for Panel replay with Link
ON and with auxless ALPM (Link-Off). 

This series is in continuation from discussions in [1] [2] and more
recent [3]:

Apart from few patches from [3] new changes include:
- Some clean up in drm/dp Macros
- Add new DPCD bit to get FAVT PAYLOAD FIELDS PARSING SUPPORT.
- Add AS SDP version and PR and VRR specific bits in drm_dp.h.
- Modify AS SDP compute config to accomodate PR with Link On and Link
  Off.
- Program Downspread Ctrl DPCD bits.
- Make way for T1 and T2 AS SDP transmission timing/position.

[1] https://lore.kernel.org/all/1b8c6c6de1e5fe0db83e6ae942dfee7e6f950767.camel@intel.com/
[2] https://lore.kernel.org/all/aPtqdAxDwiuQZbrn@intel.com/
[3] https://lore.kernel.org/intel-gfx/7c2d6f4e-69e6-452a-89cc-5fd4254430bd@intel.com/T/#m6e8beab2cc3b6ff9d61f740f107d83a2f4e08114

Rev2:
 - Drop the redundant version member for AS SDP, and use the member
   revision
 - Drop member to store AS SDP transmission time, use simple helper
   instead.
 - Use Burst mode to write Panel Replay config DPCDs.
 - Split AS SDP configuration in compute_config() and
   compute_config_late() phase.
 - Always enable AS SDP whenever supported by source + sink.

Ankit Nautiyal (19):
  drm/dp: Rename and relocate AS SDP payload field masks
  drm/dp: Clean up DPRX feature enumeration macros
  drm/dp: Add bits for AS SDP FAVT Payload Fields Parsing support
  include/drm/display/dp: Add DPCD registers for configuring Panel
    Replay + VRR
  drm/i915/dp: Fix readback for target_rr in Adaptive Sync SDP
  drm/i915/vrr: Avoid vrr for PCON with HDMI2.1 sink
  drm/i915/dp: Account for AS_SDP guardband only when enabled
  drm/i915/dp: Add a helper to decide if AS SDP can be used
  drm/i915/dp: Skip AS SDP for DP branch devices
  drm/i915/dp: Use revision field of AS SDP data structure
  drm/i915/dp: Add member to intel_dp to store AS SDP v2 support
  drm/i915/psr: Write the PR config DPCDs in burst mode
  drm/i915/display: Add helper for AS SDP transmission time selection
  drm/i915/psr: Program Panel Replay CONFIG3 using AS SDP transmission
    time
  drm/i915/dp: Set relevant Downspread Ctrl DPCD bits for PR + Auxless
    ALPM
  drm/i915/dp: Program AS SDP DB[1:0] for PR with Link off
  drm/i915/dp: Split AS SDP computation between compute_config and
    compute_config_late
  drm/i915/dp: Make provision for AS SDP version 1
  drm/i915/dp: Always enable AS SDP if supported by source + sink

 drivers/gpu/drm/i915/display/intel_alpm.c     |  20 ++-
 drivers/gpu/drm/i915/display/intel_display.c  |   3 +-
 .../drm/i915/display/intel_display_types.h    |   1 +
 drivers/gpu/drm/i915/display/intel_dp.c       | 151 ++++++++++++++----
 drivers/gpu/drm/i915/display/intel_dp.h       |   2 +
 .../drm/i915/display/intel_dp_link_training.c |  10 +-
 .../drm/i915/display/intel_dp_link_training.h |   3 +-
 drivers/gpu/drm/i915/display/intel_dp_mst.c   |   2 +-
 drivers/gpu/drm/i915/display/intel_psr.c      |  20 ++-
 drivers/gpu/drm/i915/display/intel_vrr.c      |  10 ++
 include/drm/display/drm_dp.h                  |  23 ++-
 11 files changed, 195 insertions(+), 50 deletions(-)

-- 
2.45.2