Changes in i915_dsb_buffer.c

4a57e0913e8c7fff407e97909f4ae48caa84d612 - Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel

Wed, 15 Apr 2026 17:45:00 +0200

Merge tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernelPull drm updates from Dave Airlie: "Highlights: - new DRM RAS infrastructure using netlink - amdgpu: enable DC on CIK APUs, and more IP enablement, and more user queue work - xe: purgeable BO support, and new hw enablement - dma-buf : add revocable operations Full summary: mm: - two-pass MMU interval notifiers - add gpu active/reclaim per-node stat counters math: - provide __KERNEL_DIV_ROUND_CLOSEST() in UAPI - implement DIV_ROUND_CLOSEST() with __KERNEL_DIV_ROUND_CLOSEST() rust: - shared tag with driver-core: register macro and io infra - core: rework DMA coherent API - core: add interop::list to interop with C linked lists - core: add more num::Bounded operations - core: enable generic_arg_infer and add EMSGSIZE - workqueue: add ARef support for work and delayed work - add GPU buddy allocator abstraction - add DRM shmem GEM helper abstraction - allow drm:::Device to dispatch work and delayed work items to driver private data - add dma_resv_lock helper and raw accessors core: - introduce DRM RAS infrastructure over netlink - add connector panel_type property - fourcc: add ARM interleaved 64k modifier - colorop: add destroy helper - suballoc: split into alloc and init helpers - mode: provide DRM_ARGB_GET*() macros for reading color components edid: - provide drm_output_color_Format dma-buf: - provide revoke mechanism for shared buffers - rename move_notify to invalidate_mappings - always enable move_notify - protect dma_fence_ops with RCU and improve locking - clean pages with helpers atomic: - allocate drm_private_state via callback - helper: use system_percpu_wq buddy: - make buddy allocator available to gpu level - add kernel-doc for buddy allocator - improve aligned allocation ttm: - fix fence signalling - improve tests and docs - improve handling of gfp_retry_mayfail - use per-node stat counters to track memory allocations - port pool to use list_lru - drop NUMA specific pools - make pool shrinker numa aware - track allocated pages per numa node coreboot: - cleanup coreboot framebuffer support sched: - fix race condition in drm_sched_fini pagemap: - enable THP support - pass pagemap_addr by reference gem-shmem: - Track page accessed/dirty status across mmap/vmap gpusvm: - reenable device to device migration - fix unbalanced unclock bridge: - anx7625: Support USB-C plus DT bindings - connector: Fix EDID detection - dw-hdmi-qp: Support Vendor-Specfic and SDP Infoframes; improve others - fsl-ldb: Fix visual artifacts plus related DT property 'enable-termination-resistor' - imx8qxp-pixel-link: Improve bridge reference handling - lt9611: Support Port-B-only input plus DT bindings - tda998x: Support DRM_BRIDGE_ATTACH_NO_CONNECTOR; Clean up - Support TH1520 HDMI plus DT bindings - waveshare-dsi: Fix register and attach; Support 1..4 DSI lanes plus DT bindings - anx7625: Fix USB Type-C handling - cdns-mhdp8546-core: Handle HDCP state in bridge atomic_check - Support Lontium LT8713SX DP MST bridge plus DT bindings - analogix_dp: Use DP helpers for link training panel: - panel-jdi-lt070me05000: Use mipi-dsi multi functions - panel-edp: Support Add AUO B116XAT04.1 (HW: 1A); Support CMN N116BCL-EAK (C2); Support FriendlyELEC plus DT changes - panel-edp: Fix timings for BOE NV140WUM-N64 - ilitek-ili9882t: Allow GPIO calls to sleep - jadard: Support TAIGUAN XTI05101-01A - lxd: Support LXD M9189A plus DT bindings - mantix: Fix pixel clock; Clean up - motorola: Support Motorola Atrix 4G and Droid X2 plus DT bindings - novatek: Support Novatek/Tianma NT37700F plus DT bindings - simple: Support EDT ET057023UDBA plus DT bindings; Support Powertip PH800480T032-ZHC19 plus DT bindings; Support Waveshare 13.3" - novatek-nt36672a: Use mipi_dsi_*_multi() functions - panel-edp: Support BOE NV153WUM-N42, CMN N153JCA-ELK, CSW MNF307QS3-2 - support Himax HX83121A plus DT bindings - support JuTouch JT070TM041 plus DT bindings - support Samsung S6E8FC0 plus DT bindings - himax-hx83102c: support Samsung S6E8FC0 plus DT bindings; support backlight - ili9806e: support Rocktech RK050HR345-CT106A plus DT bindings - simple: support Tianma TM050RDH03 plus DT bindings amdgpu: - enable DC by default on CIK APUs - userq fence ioctl param size fixes - set panel_type to OLED for eDP - refactor DC i2c code - FAMS2 update - rework ttm handling to allow multiple engines - DC DCE 6.x cleanup - DC support for NUTMEG/TRAVIS DP bridge - DCN 4.2 support - GC12 idle power fix for compute - use struct drm_edid in non-DC code - enable NV12/P010 support on primary planes - support newer IP discovery tables - VCN/JPEG 5.0.2 support - GC/MES 12.1 updates - USERQ fixes - add DC idle state manager - eDP DSC seamless boot amdkfd: - GC 12.1 updates - non 4K page fixes xe: - basic Xe3p_LPG and NVL-P enabling patches - allow VM_BIND decompress support - add purgeable buffer object support - add xe_vm_get_property_ioctl - restrict multi-lrc to VCS/VECS engines - allow disabling VM overcommit in fault mode - dGPU memory optimizations - Workaround cleanups and simplification - Allow VFs VRAM quote changes using sysfs - convert GT stats to per-cpu counters - pagefault refactors - enable multi-queue on xe3p_xpc - disable DCC on PTL - make MMIO communication more robust - disable D3Cold for BMG on specific platforms - vfio: improve FLR sync for Xe VFIO i915/display: - C10/C20/LT PHY PLL divider verification - use trans push mechanism to generate PSR frame change on LNL+ - refactor DP DSC slice config - VGA decode refactoring - refactor DPT, gen2-4 overlay, masked field register macro helpers - refactor stolen memory allocation decisions - prepare for UHBR DP tunnels - refactor LT PHY PLL to use DPLL framework - implement register polling/waiting in display code - add shared stepping header between i915 and display i915: - fix potential overflow of shmem scatterlist length nouveau: - provide Z cull info to userspace - initial GA100 support - shutdown on PCI device shutdown nova-core: - harden GSP command queue - add support for large RPCs - simplify GSP sequencer and message handling - refactor falcon firmware handling - convert to new register macro - conver to new DMA coherent API - use checked arithmetic - add debugfs support for gsp-rm log buffers - fix aux device registration for multi-GPU msm: - CI: - Uprev mesa - Restore CI jobs for Qualcomm APQ8016 and APQ8096 devices - Core: - Switched to of_get_available_child_by_name() - DPU: - Fixes for DSC panels - Fixed brownout because of the frequency / OPP mismatch - Quad pipe preparation (not enabled yet) - Switched to virtual planes by default - Dropped VBIF_NRT support - Added support for Eliza platform - Reworked alpha handling - Switched to correct CWB definitions on Eliza - Dropped dummy INTF_0 on MSM8953 - Corrected INTFs related to DP-MST - DP: - Removed debug prints looking into PHY internals - DSI: - Fixes for DSC panels - RGB101010 support - Support for SC8280XP - Moved PHY bindings from display/ to phy/ - GPU: - Preemption support for x2-85 and a840 - IFPC support for a840 - SKU detection support for x2-85 and a840 - Expose AQE support (VK ray-pipeline) - Avoid locking in VM_BIND fence signaling path - Fix to avoid reclaim in GPU snapshot path - Disallow foreign mapping of _NO_SHARE BOs - HDMI: - Fixed infoframes programming - MDP5: - Dropped support for MSM8974v1 - Dropped now unused code for MSM8974 v1 and SDM660 / MSM8998 panthor: - add tracepoints for power and IRQs - fix fence handling - extend timestamp query with flags - support various sources for timestamp queries tyr: - fix names and model/versions rockchip: - vop2: use drm logging function - rk3576 displayport support - support CRTC background color atmel-hlcdc: - support sana5d65 LCD controller tilcdc: - use DT bindings schema - use managed DRM interfaces - support DRM_BRIDGE_ATTACH_NO_CONNECTOR verisilicon: - support DC8200 + DT bindings virtgpu: - support PRIME import with 3D enabled komeda: - fix integer overflow in AFBC checks mcde: - improve bridge handling gma500: - use drm client buffer for fbdev framebuffer amdxdna: - add sensors ioctls - provide NPU power estimate - support column utilization sensor - allow forcing DMA through IOMMU IOVA - support per-BO mem usage queries - refactor GEM implementation ivpu: - update boot API to v3.29.4 - limit per-user number of doorbells/contexts - perform engine reset on TDR error loongson: - replace custom code with drm_gem_ttm_dumb_map_offset() imx: - support planes behind the primary plane - fix bus-format selection vkms: - support CRTC background color v3d: - improve handling of struct v3d_stats komeda: - support Arm China Linlon D6 plus DT bindings imagination: - improve power-off sequence - support context-reset notification from firmware mediatek: - mtk_dsi: enable hs clock during pre-enable - Remove all conflicting aperture devices during probe - Add support for mt8167 display blocks"* tag 'drm-next-2026-04-15' of https://gitlab.freedesktop.org/drm/kernel: (1735 commits) drm/ttm/tests: Remove checks from ttm_pool_free_no_dma_alloc drm/ttm/tests: fix lru_count ASSERT drm/vram: remove DRM_VRAM_MM_FILE_OPERATIONS from docs drm/fb-helper: Fix a locking bug in an error path dma-fence: correct kernel-doc function parameter @flags ttm/pool: track allocated_pages per numa node. ttm/pool: make pool shrinker NUMA aware (v2) ttm/pool: drop numa specific pools ttm/pool: port to list_lru. (v2) drm/ttm: use gpu mm stats to track gpu memory allocations. (v4) mm: add gpu active/reclaim per-node stat counters (v2) gpu: nova-core: fix missing colon in SEC2 boot debug message gpu: nova-core: vbios: use from_le_bytes() for PCI ROM header parsing gpu: nova-core: bitfield: fix broken Default implementation gpu: nova-core: falcon: pad firmware DMA object size to required block alignment gpu: nova-core: gsp: fix undefined behavior in command queue code drm/shmem_helper: Make sure PMD entries get the writeable upgrade accel/ivpu: Trigger recovery on TDR with OS scheduling drm/msm: Use of_get_available_child_by_name() dt-bindings: display/msm: move DSI PHY bindings to phy/ subdir ... List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c

9e63413827a8ea464249c0aa8046ac8fe7d9cc47 - Merge drm/drm-next into drm-xe-next

Thu, 19 Mar 2026 10:01:55 +0100

Merge drm/drm-next into drm-xe-nextBring in series "drm/{i915,xe}: sort out step enums between the drivers"that was merged through i915.Link: https://lore.kernel.org/all/cover.1772635152.git.jani.nikula@intel.comSigned-off-by: Thomas Hellström List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c

d93f8ea0e5ad41d661496d205fac3e2fbd9358c0 - Merge tag 'drm-intel-next-2026-03-16' of https://gitlab.freedesktop.org/drm/i915/kernel into drm-next

Tue, 17 Mar 2026 02:27:01 +0100

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 From: Jani Nikula Link: https://patch.msgid.link/b14bb0f297b1750816cf5f342bde608e435655fa@intel.com List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c

f09812b85fa6f41058bcc46e70ac406bf9b0493a - Merge drm/drm-next into drm-intel-next

Wed, 25 Feb 2026 12:23:04 +0100

Merge drm/drm-next into drm-intel-nextSync with v7.0-rc1 which contains a few treewide changes affecting i915.Signed-off-by: Jani Nikula List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c

cca7eda1c73045d6fb12b3db34f90de65412e742 - drm/{i915, xe}/dsb: move DSB buffer to parent interface

Tue, 20 Jan 2026 16:45:41 +0100

drm/{i915, xe}/dsb: move DSB buffer to parent interfaceMove the DSB buffer handling to the display parent interface, makingdisplay more independent of i915 and xe driver implementations.Since the DSB parent interface is only called from intel_dsb.c, add thewrappers there with smaller visibility instead of the usualintel_parent.[ch], and using struct intel_dsb as the context parameterfor convenience.Unfortunately, memset() being a macro in linux/fortify-string.h, wecan't use that as the function pointer name. dsb->memset() would beusing the macro and leading to build failures. Therefore, use .fill()for the memset() functionality.v2: s/memset/fill/Reviewed-by: Michał Grzelak Link: https://patch.msgid.link/df117c862a6d34dae340e4a85c2482b4e29c8884.1768923917.git.jani.nikula@intel.comSigned-off-by: Jani Nikula List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c

1617f5955c6458513787656afde819c91323ab03 - drm/i915/dsb: move i915 specific DSB buffer implementation to i915

Tue, 20 Jan 2026 16:45:40 +0100

drm/i915/dsb: move i915 specific DSB buffer implementation to i915The DSB buffer implementation is different for both i915 and xe. Movethe i915 specific implementation from display to i915 core.Reviewed-by: Michał Grzelak Link: https://patch.msgid.link/a01b3e69a3f79713eacf437af00dbe23d2f9c8dd.1768923917.git.jani.nikula@intel.comSigned-off-by: Jani Nikula List of files: /linux/drivers/gpu/drm/i915/i915_dsb_buffer.c