kernel/linux.git/drivers/gpu/drm/tegra, branch v6.19.11

drm/tegra: dsi: fix device leak on probe

2026-03-04T12:21:13+00:00

[ Upstream commit bfef062695570842cf96358f2f46f4c6642c6689 ] Make sure to drop the reference taken when looking up the companion (ganged) device and its driver data during probe(). Note that holding a reference to a device does not prevent its driver data from going away so there is no point in keeping the reference. Fixes: e94236cde4d5 ("drm/tegra: dsi: Add ganged mode support") Fixes: 221e3638feb8 ("drm/tegra: Fix reference leak in tegra_dsi_ganged_probe") Cc: stable@vger.kernel.org # 3.19: 221e3638feb8 Cc: Thierry Reding Signed-off-by: Johan Hovold Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20251121164201.13188-1-johan@kernel.org Signed-off-by: Sasha Levin

Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel

2025-12-04T16:53:30+00:00

Pull drm updates from Dave Airlie: "There was a rather late merge of a new color pipeline feature, that some userspace projects are blocked on, and has seen a lot of work in amdgpu. This should have seen some time in -next. There is additional support for this for Intel, that if it arrives in the next day or two I'll pass it on in another pull request and you can decide if you want to take it. Highlights: - Arm Ethos NPU accelerator driver - new DRM color pipeline support - amdgpu will now run discrete SI/CIK cards instead of radeon, which enables vulkan support in userspace - msm gets gen8 gpu support - initial Xe3P support in xe Full detail summary: New driver: - Arm Ethos-U65/U85 accel driver Core: - support the drm color pipeline in vkms/amdgfx - add support for drm colorop pipeline - add COLOR PIPELINE plane property - add DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE - throttle dirty worker with vblank - use drm_for_each_bridge_in_chain_scoped in drm's bridge code - Ensure drm_client_modeset tests are enabled in UML - add simulated vblank interrupt - use in drivers - dumb buffer sizing helper - move freeing of drm client memory to driver - crtc sharpness strength property - stop using system_wq in scheduler/drivers - support emergency restore in drm-client Rust: - make slice::as_flattened usable on all supported rustc - add FromBytes::from_bytes_prefix() method - remove redundant device ptr from Rust GEM object - Change how AlwaysRefCounted is implemented for GEM objects gpuvm: - Add deferred vm_bo cleanup to GPUVM (for rust) atomic: - cleanup and improve state handling interfaces buddy: - optimize block management dma-buf: - heaps: Create heap per CMA reserved location - improve userspace documentation dp: - add POST_LT_ADJ_REQ training sequence - DPCD dSC quirk for synaptics panamera devices - helpers to query branch DSC max throughput ttm: - Rename ttm_bo_put to ttm_bo_fini - allow page protection flags on risc-v - rework pipelined eviction fence handling amdgpu: - enable amdgpu by default for SI/CI dGPUs - enable DC by default on SI - refactor CIK/SI enablement - add ABM KMS property - Re-enable DM idle optimizations - DC Analog encoders support - Powerplay fixes for fiji/iceland - Enable DC on bonaire by default - HMM cleanup - Add new RAS framework - DML2.1 updates - YCbCr420 fixes - DC FP fixes - DMUB fixes - LTTPR fixes - DTBCLK fixes - DMU cursor offload handling - Userq validation improvements - Unify shutdown callback handling - Suspend improvements - Power limit code cleanup - SR-IOV fixes - AUX backlight fixes - DCN 3.5 fixes - HDMI compliance fixes - DCN 4.0.1 cursor updates - DCN interrupt fix - DC KMS full update improvements - Add additional HDCP traces - DCN 3.2 fixes - DP MST fixes - Add support for new SR-IOV mailbox interface - UQ reset support - HDP flush rework - VCE1 support amdkfd: - HMM cleanups - Relax checks on save area overallocations - Fix GPU mappings after prefetch radeon: - refactor CIK/SI enablement xe: - Initial Xe3P support - panic support on VRAM for display - fix stolen size check - Loosen used tracking restriction - New SR-IOV debugfs structure and debugfs updates - Hide the GPU madvise flag behind a VM_BIND flag - Always expose VRAM provisioning data on discrete GPUs - Allow VRAM mappings for userptr when used with SVM - Allow pinning of p2p dma-buf - Use per-tile debugfs where appropriate - Add documentation for Execution Queues - PF improvements - VF migration recovery redesign work - User / Kernel VRAM partitioning - Update Tile-based messages - Allow configfs to disable specific GT types - VF provisioning and migration improvements - use SVM range helpers in PT layer - Initial CRI support - access VF registers using dedicated MMIO view - limit number of jobs per exec queue - add sriov_admin sysfs tree - more crescent island specific support - debugfs residency counter - SRIOV migration work - runtime registers for GFX 35 i915: - add initial Xe3p_LPD display version 35 support - Enable LNL+ content adaptive sharpness filter - Use optimized VRR guardband - Enable Xe3p LT PHY - enable FBC support for Xe3p_LPD display - add display 30.02 firmware support - refactor SKL+ watermark latency setup - refactor fbdev handling - call i915/xe runtime PM via function pointers - refactor i915/xe stolen memory/display interfaces - use display version instead of gfx version in display code - extend i915_display_info with Type-C port details - lots of display cleanups/refactorings - set O_LARGEFILE in __create_shmem - skuip guc communication warning on reset - fix time conversions - defeature DRRS on LNL+ - refactor intel_frontbuffer split between i915/xe/display - convert inteL_rom interfaces to struct drm_device - unify display register polling interfaces - aovid lock inversion when pinning to GGTT on CHV/BXT+VTD panel: - Add KD116N3730A08/A12, chromebook mt8189 - JT101TM023, LQ079L1SX01, - GLD070WX3-SL01 MIPI DSI - Samsung LTL106AL0, Samsung LTL106AL01 - Raystar RFF500F-AWH-DNN - Winstar WF70A8SYJHLNGA - Wanchanglong w552946aaa - Samsung SOFEF00 - Lenovo X13s panel - ilitek-ili9881c - add rpi 5" support - visionx-rm69299 - add backlight support - edp - support AUI B116XAN02.0 bridge: - improve ref counting - ti-sn65dsi86 - add support for DP mode with HPD - synopsis: support CEC, init timer with correct freq - ASL CS5263 DP-to-HDMI bridge support nova-core: - introduce bitfield! macro - introduce safe integer converters - GSP inits to fully booted state on Ampere - Use more future-proof register for GPU identification nova-drm: - select NOVA_CORE - 64-bit only nouveau: - improve reclocking on tegra 186+ - add large page and compression support msm: - GPU: - Gen8 support: A840 (Kaanapali) and X2-85 (Glymur) - A612 support - MDSS: - Added support for Glymur and QCS8300 platforms - DPU: - Enabled Quad-Pipe support, unlocking higher resolutions support - Added support for Glymur platform - Documented DPU on QCS8300 platform as supported - DisplayPort: - Added support for Glymur platform - Added support lame remapping inside DP block - Documented DisplayPort controller on QCS8300 and SM6150/QCS615 as supported tegra: - NVJPG driver panfrost: - display JM contexts over debugfs - export JM contexts to userspace - improve error and job handling panthor: - support custom ASN_HASH for mt8196 - support mali-G1 GPU - flush shmem write before mapping buffers uncached - make timeout per-queue instead of per-job mediatek: - MT8195/88 HDMIv2/DDCv2 support rockchip: - dsi: add support for RK3368 amdxdna: - enhance runtime PM - last hardware error reading uapi - support firmware debug output - add resource and telemetry data uapi - preemption support imx: - add driver for HDMI TX Parallel audio interface ivpu: - add support for user-managed preemption buffer - add userptr support - update JSM firware API to 3.33.0 - add better alloc/free warnings - fix page fault in unbind all bos - rework bind/unbind of imported buffers - enable MCA ECC signalling - split fw runtime and global memory buffers - add fdinfo memory statistics tidss: - convert to drm logging - logging cleanup ast: - refactor generation init paths - add per chip generation detect_tx_chip - set quirks for each chip model atmel-hlcdc: - set LCDC_ATTRE register in plane disable - set correct values for plane scaler solomon: - use drm helper for get_modes and move_valid sitronix: - fix output position when clearing screens qaic: - support dma-buf exports - support new firmware's READ_DATA implementation - sahara AIC200 image table update - add sysfs support - add coredump support - add uevents support - PM support sun4i: - layer refactors to decouple plane from output - improve DE33 support vc4: - switch to generic CEC helpers komeda: - use drm_ logging functions vkms: - configfs support for display configuration vgem: - fix fence timer deadlock etnaviv: - add HWDB entry for GC8000 Nano Ultra VIP r6205" * tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel: (1869 commits) Revert "drm/amd: Skip power ungate during suspend for VPE" drm/amdgpu: use common defines for HUB faults drm/amdgpu/gmc12: add amdgpu_vm_handle_fault() handling drm/amdgpu/gmc11: add amdgpu_vm_handle_fault() handling drm/amdgpu: use static ids for ACP platform devs drm/amdgpu/sdma6: Update SDMA 6.0.3 FW version to include UMQ protected-fence fix drm/amdgpu: Forward VMID reservation errors drm/amdgpu/gmc8: Delegate VM faults to soft IRQ handler ring drm/amdgpu/gmc7: Delegate VM faults to soft IRQ handler ring drm/amdgpu/gmc6: Delegate VM faults to soft IRQ handler ring drm/amdgpu/gmc6: Cache VM fault info drm/amdgpu/gmc6: Don't print MC client as it's unknown drm/amdgpu/cz_ih: Enable soft IRQ handler ring drm/amdgpu/tonga_ih: Enable soft IRQ handler ring drm/amdgpu/iceland_ih: Enable soft IRQ handler ring drm/amdgpu/cik_ih: Enable soft IRQ handler ring drm/amdgpu/si_ih: Enable soft IRQ handler ring drm/amd/display: fix typo in display_mode_core_structs.h drm/amd/display: fix Smart Power OLED not working after S4 drm/amd/display: Move RGB-type check for audio sync to DCE HW sequence ...

drm/fb-helper: Allocate and release fb_info in single place

2025-11-25T10:02:43+00:00

Move the calls to drm_fb_helper_alloc_info() from drivers into a single place in fbdev helpers. Allocates struct fb_info for a new framebuffer device. Then call drm_fb_helper_single_fb_probe() to create an fbdev screen buffer. Also release the instance on errors by calling drm_fb_helper_release_info(). Simplifies the code and fixes the error cleanup for some of the drivers. Regular release of the struct fb_info instance still happens in drm_fb_helper_fini() as before. v2: - remove error rollback in driver implementations (kernel test robot) - initialize info in TTM implementation (kernel test robot) Signed-off-by: Thomas Zimmermann Acked-by: Christian König # radeon Acked-by: Dmitry Baryshkov # msm Acked-by: Javier Martinez Canillas Link: https://patch.msgid.link/20251027081245.80262-1-tzimmermann@suse.de

drm/tegra: Add NVJPG driver

2025-11-14T18:41:55+00:00

Add support for booting and using NVJPG on Tegra210 to the Host1x and TegraDRM drivers. This driver only supports the new TegraDRM uAPI. Acked-by: Mikko Perttunen Signed-off-by: Diogo Ivo Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20250630-diogo-nvjpg-v3-1-a553c7e91354@tecnico.ulisboa.pt

drm/tegra: dsi: Calculate packet parameters for video mode

2025-11-14T17:51:28+00:00

Calculate packet parameters for video mode same way it is done for command mode, by halving timings plugged into equations. Signed-off-by: Svyatoslav Ryhel Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20250909073335.91531-3-clamor95@gmail.com

drm/tegra: dsi: Make SOL delay calculation mode independent

2025-11-14T17:50:39+00:00

Move SOL delay calculation outside of video mode conditions. Signed-off-by: Svyatoslav Ryhel Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20250909073335.91531-2-clamor95@gmail.com

Revert "drm/tegra: dsi: Clear enable register if powered by bootloader"

2025-11-14T17:21:11+00:00

Commit b6bcbce33596 ("soc/tegra: pmc: Ensure power-domains are in a known state") was introduced so that all power domains get initialized to a known working state when booting and it does this by shutting them down (including asserting resets and disabling clocks) before registering each power domain with the genpd framework, leaving it to each driver to later on power its needed domains. This caused the Google Pixel C to hang when booting due to a workaround in the DSI driver introduced in commit b22fd0b9639e ("drm/tegra: dsi: Clear enable register if powered by bootloader") meant to handle the case where the bootloader enabled the DSI hardware module. The workaround relies on reading a hardware register to determine the current status and after b6bcbce33596 that now happens in a powered down state thus leading to the boot hang. Fix this by reverting b22fd0b9639e since currently we are guaranteed that the hardware will be fully reset by the time we start enabling the DSI module. Fixes: b6bcbce33596 ("soc/tegra: pmc: Ensure power-domains are in a known state") Cc: stable@vger.kernel.org Signed-off-by: Diogo Ivo Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20251103-diogo-smaug_ec_typec-v1-1-be656ccda391@tecnico.ulisboa.pt

drm/tegra: Add call to put_pid()

2025-11-14T17:17:51+00:00

Add a call to put_pid() corresponding to get_task_pid(). host1x_memory_context_alloc() does not take ownership of the PID so we need to free it here to avoid leaking. Signed-off-by: Prateek Agarwal Fixes: e09db97889ec ("drm/tegra: Support context isolation") [mperttunen@nvidia.com: reword commit message] Signed-off-by: Mikko Perttunen Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20250919-host1x-put-pid-v1-1-19c2163dfa87@nvidia.com

drm/tegra: dc: Fix reference leak in tegra_dc_couple()

2025-11-14T16:58:26+00:00

driver_find_device() calls get_device() to increment the reference count once a matching device is found, but there is no put_device() to balance the reference count. To avoid reference count leakage, add put_device() to decrease the reference count. Found by code review. Cc: stable@vger.kernel.org Fixes: a31500fe7055 ("drm/tegra: dc: Restore coupling of display controllers") Signed-off-by: Ma Ke Acked-by: Mikko Perttunen Signed-off-by: Thierry Reding Link: https://patch.msgid.link/20251022114720.24937-1-make24@iscas.ac.cn

drm: include drm_print.h where needed

2025-10-31T08:34:52+00:00

There are a gazillion files that depend on drm_print.h being indirectly included via drm_buddy.h, drm_mm.h, or ttm/ttm_resource.h. In preparation for removing those includes, explicitly include drm_print.h where needed. Cc: Thomas Zimmermann Reviewed-by: Thomas Zimmermann Signed-off-by: Jani Nikula Link: https://lore.kernel.org/r/5fe67395907be33eb5199ea6d540e29fddee71c8.1761734313.git.jani.nikula@intel.com