[PATCH v4 0/4] HDMI 2.1 VRR and ALLM support

This series adds HDMI 2.1 gaming support to amdgpu: Variable Refresh Rate
(VRR) derived from the HDMI Forum VSDB (HF-VSDB), and Auto Low-Latency
Mode (ALLM). It builds on a drm/edid patch that parses the HF-VSDB gaming
capabilities into struct drm_hdmi_info.

  - Patch 1 reports FreeSync from the AMD VSDB (existing mechanism).
  - Patch 2 (drm/edid) parses the HF-VSDB VRR range and ALLM bit.
  - Patch 3 enables VRR from the HF-VSDB when the AMD VSDB has no range.
  - Patch 4 signals ALLM_Mode in the HF-VSIF when Gaming-VRR is active.

v1: https://lore.kernel.org/amd-gfx/[email protected]/
v2: https://lore.kernel.org/amd-gfx/[email protected]/
v3: https://lore.kernel.org/amd-gfx/[email protected]/

Changes since v3:
  - Drop the content-type based ALLM heuristic. ALLM_Mode is now set only
    for the mandatory Gaming-VRR case (VRR_EN=1 with a sink that advertises
    ALLM), per HDMI 2.1 Section 7.6.6; it is no longer derived from the
    content type.

Changes since v2:
  - Fix coding-style issues in the VTEM info-packet code.

Fangzhi Zuo (3):
  drm/amd/display: Add 2.1 FreeSync support for AMD VSDB EDID Block
  drm/amd/display: Add HDMI 2.1 VRR support from HF-VSDB
  drm/amd/display: Enable HDMI ALLM for Gaming-VRR

Tomasz Pakuła (1):
  drm/edid: parse HDMI 2.1 gaming (ALLM/VRR) capabilities from HF-VSDB

 .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c |   5 +-
 .../display/amdgpu_dm/amdgpu_dm_connector.c   |  71 +++++++++++-
 .../display/amdgpu_dm/amdgpu_dm_freesync.c    |  41 +++++++
 .../amd/display/modules/inc/mod_info_packet.h |   4 +
 .../display/modules/info_packet/info_packet.c | 109 ++++++++++++++++++
 drivers/gpu/drm/drm_edid.c                    |  42 +++++++
 include/drm/drm_connector.h                   |  47 ++++++++
 7 files changed, 317 insertions(+), 2 deletions(-)


base-commit: de2622bbc20276eaaaafa8fdbd374ace1ced28dc
-- 
2.53.0