Claude review: drm/i915/psr: Add helper to get Async Video timing support in PR active

Claude Code Review Bot
2026-04-12T02:51:28Z

Patch Review

Introduces `intel_psr_pr_async_video_timing_supported()`. The function reads DPCD through the connector's panel replay capabilities cache:
```c
u8 *dpcd = connector->dp.panel_replay_caps.dpcd;
u8 pr_support = dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_SUPPORT)];
u8 pr_cap = dpcd[INTEL_PR_DPCD_INDEX(DP_PANEL_REPLAY_CAP_CAPABILITY)];
```

The logic checks that Panel Replay is supported AND that async video timing is NOT unsupported (double negative from the spec bit name `DP_PANEL_REPLAY_ASYNC_VIDEO_TIMING_NOT_SUPPORTED_IN_PR`).

Missing R-b.