Hi Timo,
Thanks for the patch. Heads-up that this overlaps with a fix already in
amd-staging-drm-next:
21590e1adc9e ("drm/amd/display: Fix 8K Mode Not Parsed by EDID")
That commit addresses the same underlying problem your patch targets --
edid->extensions (byte 0x7e) not accounting for HF-EEODB blocks, so only
2 of 4 blocks of an HDMI 2.1 EDID get copied into sink->dc_edid and the
8K modes in the DisplayID extension blocks are lost. It takes a slightly
different approach: instead of drm_edid_block_count(), it populates
edid_blob_ptr with a full, HF-EEODB-aware blob and copies
edid_blob_ptr->length. So on current amd-staging the
dm_helpers_read_local_edid() hunk here no longer applies cleanly.
Could you rebase on the latest amd-staging-drm-next and see what, if
anything, is still needed on top? There may still be value in the
helper conversion for readability, but we should avoid re-fixing the
same HF-EEODB issue two different ways.
Thanks,
Jerry
