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 for Game content / active VRR. v1: https://lore.kernel.org/amd-gfx/[email protected]/ Changes in v2: - Read HF-VSDB caps directly from connector->display_info.hdmi.vrr_cap and .allm instead of mirroring redundant fva/hdmi_vrr/allm flags into struct dc_edid_caps. - VRRMAX=0 now falls back to the Base Refresh Rate (highest refresh-rate mode of the preferred timing) instead of a hardcoded 240 Hz. - Rebased onto amd-staging-drm-next; the FreeSync code now lives in amdgpu_dm_freesync.c. - Reordered Signed-off-by on the drm/edid patch (author first). - Reworded commit messages. 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: Add HDMI ALLM support Tomasz PakuĊa (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 | 89 +++++++++++++- .../display/amdgpu_dm/amdgpu_dm_freesync.c | 43 +++++++ .../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, 335 insertions(+), 4 deletions(-) base-commit: c4f76bf5e107bcda6e496f1c4060c55af091fa79 -- 2.53.0
