Merge tag 'drm-intel-next-2026-03-16' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

[airlied: fixed conflict with xe tree]
drm/i915 feature pull for v7.1:

Features and functionality:
- C10/C20/LT PHY PLL divider verification (Mika)
- Use trans push mechanism to generate PSR frame change event on LNL+ (Jouni)
- Account for DSC bubble overhead for horizontal slices (Ankit, Chaitanya)

Refactoring and cleanups:
- Refactor DP DSC slice config computation (Imre)
- Use GVT versions of register helper macros for GVT MMIO table (Ankit)
- C10/C20/LT PHY PLL computation refactoring (Mika)
- VGA decode refactoring and related fixes/cleanups (Ville)
- Move DSB buffer buffer implementation to display parent interface (Jani)
- Move error interrupt capture to display irq snapshot (Jani)
- Move pcode calls to display parent interface (Jani)
- Reduce GVT dependency on display headers (Jani)
- Compute config and mode valid refactoring for DSC (Ankit)
- Stop using i915 core register headers in display (Uma)
- Refactor DPT, move i915 parts to display parent interface (Jani)
- Refactor gen2-4 overlay, move to display parent interface (Ville)
- Refactor masked field register macro helpers, move to shared headers (Jani)
- Convert a number of workaround checks to the new workaround framework (Luca)
- Refactor and move frontbuffer calls to display parent interface (Jani)
- Add VMA calls to display parent interface (Jani)
- Refactor stolen memory allocation decisions (Vinod, Ville)
- Clean up and unify workqueue usage (Marco Crivellari)
- Preparation for UHBR DP tunnels (Imre)
- Allow DSC passthrough modes during DP MST mode validation (Imre)
- Move framebuffer bo interface to display parent interface (Jani)

Fixes:
- Plenty of DP SST HPD IRQ handling fixes (Imre)
- DP AUX backlight and luminance control fixes (Suraj)
- Respect VBT pipe joiner disable for eDP (Ankit)
- Do not use CASF with joiner (Nemesa)
- Clear C10/C20 PHY response read and error bit to avoid PHY hangs (Suraj)
- Xe3p_LPD DMG clock gating, CDCLK, port sync workarounds (Suraj, Gustavo, Mitul)
- Fix GVT error path (Michał)
- Handle errors on DP DSC receiver cap reads (Suraj)
- DSS clock gating workaround on MTL+ to avoid DSC corruption (Mika)
- Skip state verification for LT PHY in TBT mode (Suraj)
- Fix NULL pointer dereference on suspend when uc firmware not loaded (Rahul Bukte)
- Fix an unlikely DMC state related NULL pointer dereference at probe (Imre)
- Handle error returns from vga_get_uninterruptible() (Simon Richter)
- Increase C10/C20/LT PHY timeouts to include SOC/OS turnaround (Arun)
- Fix BIOS FB vs. stolen memory size check (Ville)
- Fix LOBF to use computed guardband and set context latency (Ankit)
- Handle modeset WW mutex lock failures due to contention properly (Imre)
- Fix pipe BPP clamping due to HDR (Imre)
- Fix stale state usage in DSC state computation (Imre)
- Take HDCP 1.4 vs 2.x into account during link check (Suraj)
- Fix forced link retrain handling in MST HPD IRQ handler (Imre)
- Remove redundant warning on vcpi < 0 (Jonathan)

Core changes:
- iopoll: fix function parameter names in read_poll_timeout_atomic() (Randy Dunlap)

Merges:
- Backmerge drm-next for v7.0-rc1 (Jani)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patch.msgid.link/b14bb0f297b1750816cf5f342bde608e435655fa@intel.com

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