claude-noether
3834ba012f
Three commits stacked on boltzmann:~/src/linux-rockchip vp9-enablement-iter1 branch (1262 LoC total): 47431635801d regs header VP9 struct definitions (+238) da8482271938 shared codec-spec helpers in rkvdec-vp9-common.h (+511) 71cc0d96d212 new backend rkvdec-vdpu381-vp9.c + wiring (+513) Module builds clean against 7.0.0-rc3 ARM64 kernel after fixing two compiler-caught typos (BSP-style regNNN_ field naming vs mainline plain names — exactly the namespace-bridging risk Janet flagged in v2 review). What's NOT yet correct: 5 TODO Phase 2.1 markers in vdpu381_config_vp9_regs covering RCB address setup, segmentation register packing, ref-deltas/mode-deltas bit-packing, and probability storage rotation. Each TODO has the BSP reference location identified (mpp/hal/rkdec/vp9d/hal_vp9d_vdpu382.c lines). Push to gitea hanging (ssh timeout); commits safe on boltzmann disk. Phase 3 entry point documented: retry push, implement 5 TODOs, build, backup ampere module, install + modprobe cycle, sanity v4l2-ctl enumeration, pre-flight IRQ diagnostic, first decode attempt with watchdog watch. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
ampere-vp9-enablement
Stand-alone port + upstream-targeting work to enable VP9 hardware decode on Rockchip RK3588's rkvdec (vdpu381 register layout).
Status (2026-05-17 ~01:00)
Upstream RK3588 mainline rkvdec (Casanova v7.0 series, landed in Linux 7.0) supports H.264 + HEVC only. VP9 is on Collabora's stated roadmap but no WIP series has been posted to linux-media as of this campaign open. The legacy rkvdec-vp9.c (RK3399 / vdpu341 hardware) is feature-complete at 1042 lines but its register-config logic does not translate directly to vdpu381.
This campaign:
- Ports VP9 enablement to vdpu381 register layout (new file
rkvdec-vdpu381-vp9.c) - Registers VP9 V4L2 controls in
vdpu38x_vp9_ctrl_descs[] - Adds VP9 fmt to
vdpu381_coded_fmts[]with the new ops - Verifies bit-perfect HW vs SW decode (per feedback_compare_hw_against_sw_reference)
- Proposes upstream via linux-media
Sibling campaign: ampere-kernel-decoders closed at HEVC bit-perfect (kernel-agent#14 + #15 are the prerequisite kernel fixes).
Scope (out of)
- VP9 on RK3399 (works via legacy
rkvdec-vp9.calready in mainline) - VP9 on hantro (hantro decoder on RK3588 doesn't expose VP9; this campaign targets rkvdec)
- AV1 on RK3588 (separate work; AV1 is on hantro fdc70000 already + per Collabora)
- VP8 (already works via hantro)
- HEVC (closed in ampere-kernel-decoders)
Process
8-phase loop (per ~/.claude/CLAUDE.md). All commits via claude-noether identity. Patches will be RFC-quality and routed via kernel-agent once ready.