linux/drivers/gpu/drm/bridge, branch v6.17

drm: bridge: cdns-mhdp8546: Fix missing mutex unlock on error path

2025-09-16T13:42:35Z

Add missing mutex unlock before returning from the error path in cdns_mhdp_atomic_enable(). Fixes: 935a92a1c400 ("drm: bridge: cdns-mhdp8546: Fix possible null pointer dereference") Reported-by: Hulk Robot Signed-off-by: Qi Xi Reviewed-by: Luca Ceresoli Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250904034447.665427-1-xiqi2@huawei.com Signed-off-by: Luca Ceresoli

drm: bridge: anx7625: Fix NULL pointer dereference with early IRQ

2025-09-15T18:44:42Z

If the interrupt occurs before resource initialization is complete, the interrupt handler/worker may access uninitialized data such as the I2C tcpc_client device, potentially leading to NULL pointer dereference. Signed-off-by: Loic Poulain Fixes: 8bdfc5dae4e3 ("drm/bridge: anx7625: Add anx7625 MIPI DSI/DPI to DP") Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250709085438.56188-1-loic.poulain@oss.qualcomm.com Signed-off-by: Dmitry Baryshkov

drm/bridge: ti-sn65dsi86: fix REFCLK setting

2025-09-02T16:56:05Z

The bridge has three bootstrap pins which are sampled to determine the frequency of the external reference clock. The driver will also (over)write that setting. But it seems this is racy after the bridge is enabled. It was observed that although the driver write the correct value (by sniffing on the I2C bus), the register has the wrong value. The datasheet states that the GPIO lines have to be stable for at least 5us after asserting the EN signal. Thus, there seems to be some logic which samples the GPIO lines and this logic appears to overwrite the register value which was set by the driver. Waiting 20us after asserting the EN line resolves this issue. Fixes: a095f15c00e2 ("drm/bridge: add support for sn65dsi86 bridge driver") Signed-off-by: Michael Walle Reviewed-by: Douglas Anderson Signed-off-by: Douglas Anderson Link: https://lore.kernel.org/r/20250821122341.1257286-1-mwalle@kernel.org

Merge drm/drm-fixes into drm-misc-fixes

2025-08-20T14:08:49Z

Update drm-misc-fixes to -rc2. Signed-off-by: Maxime Ripard

drm/bridge: analogix_dp: Fix bailout for devm_drm_bridge_alloc()

2025-08-15T03:19:56Z

devm_drm_bridge_alloc() returns ERR_PTR on failure instead of a NULL pointer, so use IS_ERR() to check the returned pointer. While at it, on failure, return ERR_CAST(dp) instead of ERR_PTR(-ENOMEM) in order not to depend on devm_drm_bridge_alloc() error code implementation. Fixes: 48f05c3b4b70 ("drm/bridge: analogix_dp: Use devm_drm_bridge_alloc() API") Signed-off-by: Liu Ying Reviewed-by: Luca Ceresoli Link: https://lore.kernel.org/r/20250806095224.527938-1-victor.liu@nxp.com

Merge tag 'drm-misc-next-fixes-2025-08-12' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

2025-08-13T21:51:34Z

Short summary of fixes pull: bridge: - fix OF-node leak - fix documentation fbdev-emulation: - pass correct format info to drm_helper_mode_fill_fb_struct() panfrost: - print correct RSS size Signed-off-by: Dave Airlie From: Thomas Zimmermann Link: https://lore.kernel.org/r/20250812064712.GA14554@2a02-2454-fd5e-fd00-2c49-c639-c55f-a125.dyn6.pyur.net

treewide: rename GPIO set callbacks back to their original names

2025-08-07T08:07:06Z

The conversion of all GPIO drivers to using the .set_rv() and .set_multiple_rv() callbacks from struct gpio_chip (which - unlike their predecessors - return an integer and allow the controller drivers to indicate failures to users) is now complete and the legacy ones have been removed. Rename the new callbacks back to their original names in one sweeping change. Signed-off-by: Bartosz Golaszewski

Merge remote-tracking branch 'drm/drm-next' into drm-misc-next-fixes

2025-08-04T07:34:14Z

Seems we missed one drm-misc-next pull-request in drm-misc-next-fixes. This is required to pull in 5d156a9c3d5e ("drm/bridge: Pass down connector to drm bridge detect hook") and update its docs. Signed-off-by: Maarten Lankhorst

drm/bridge: fix OF node leak

2025-08-02T17:47:16Z

Make sure to drop the OF node reference taken when creating the aux bridge device when the device is later released. Fixes: 6914968a0b52 ("drm/bridge: properly refcount DT nodes in aux bridge drivers") Cc: Dmitry Baryshkov Signed-off-by: Johan Hovold Reviewed-by: Dmitry Baryshkov Link: https://lore.kernel.org/r/20250708085124.15445-2-johan@kernel.org Signed-off-by: Dmitry Baryshkov

Merge tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel

2025-07-31T02:26:49Z

Pull drm updates from Dave Airlie: "Highlights: - Intel xe enable Panthor Lake, started adding WildCat Lake - amdgpu has a bunch of reset improvments along with the usual IP updates - msm got VM_BIND support which is important for vulkan sparse memory - more drm_panic users - gpusvm common code to handle a bunch of core SVM work outside drivers. Detail summary: Changes outside drm subdirectory: - 'shrink_shmem_memory()' for better shmem/hibernate interaction - Rust support infrastructure: - make ETIMEDOUT available - add size constants up to SZ_2G - add DMA coherent allocation bindings - mtd driver for Intel GPU non-volatile storage - i2c designware quirk for Intel xe core: - atomic helpers: tune enable/disable sequences - add task info to wedge API - refactor EDID quirks - connector: move HDR sink to drm_display_info - fourcc: half-float and 32-bit float formats - mode_config: pass format info to simplify dma-buf: - heaps: Give CMA heap a stable name ci: - add device tree validation and kunit displayport: - change AUX DPCD access probe address - add quirk for DPCD probe - add panel replay definitions - backlight control helpers fbdev: - make CONFIG_FIRMWARE_EDID available on all arches fence: - fix UAF issues format-helper: - improve tests gpusvm: - introduce devmem only flag for allocation - add timeslicing support to GPU SVM ttm: - improve eviction sched: - tracing improvements - kunit improvements - memory leak fixes - reset handling improvements color mgmt: - add hardware gamma LUT handling helpers bridge: - add destroy hook - switch to reference counted drm_bridge allocations - tc358767: convert to devm_drm_bridge_alloc - improve CEC handling panel: - switch to reference counter drm_panel allocations - fwnode panel lookup - Huiling hl055fhv028c support - Raspberry Pi 7" 720x1280 support - edp: KDC KD116N3730A05, N160JCE-ELL CMN, N116BCJ-EAK - simple: AUO P238HAN01 - st7701: Winstar wf40eswaa6mnn0 - visionox: rm69299-shift - Renesas R61307, Renesas R69328 support - DJN HX83112B hdmi: - add CEC handling - YUV420 output support xe: - WildCat Lake support - Enable PanthorLake by default - mark BMG as SRIOV capable - update firmware recommendations - Expose media OA units - aux-bux support for non-volatile memory - MTD intel-dg driver for non-volatile memory - Expose fan control and voltage regulator in sysfs - restructure migration for multi-device - Restore GuC submit UAF fix - make GEM shrinker drm managed - SRIOV VF Post-migration recovery of GGTT nodes - W/A additions/reworks - Prefetch support for svm ranges - Don't allocate managed BO for each policy change - HWMON fixes for BMG - Create LRC BO without VM - PCI ID updates - make SLPC debugfs files optional - rework eviction rejection of bound external BOs - consolidate PAT programming logic for pre/post Xe2 - init changes for flicker-free boot - Enable GuC Dynamic Inhibit Context switch i915: - drm_panic support for i915/xe - initial flip queue off by default for LNL/PNL - Wildcat Lake Display support - Support for DSC fractional link bpp - Support for simultaneous Panel Replay and Adaptive sync - Support for PTL+ double buffer LUT - initial PIPEDMC event handling - drm_panel_follower support - DPLL interface renames - allocate struct intel_display dynamically - flip queue preperation - abstract DRAM detection better - avoid GuC scheduling stalls - remove DG1 force probe requirement - fix MEI interrupt handler on RT kernels - use backlight control helpers for eDP - more shared display code refactoring amdgpu: - add userq slot to INFO ioctl - SR-IOV hibernation support - Suspend improvements - Backlight improvements - Use scaling for non-native eDP modes - cleaner shader updates for GC 9.x - Remove fence slab - SDMA fw checks for userq support - RAS updates - DMCUB updates - DP tunneling fixes - Display idle D3 support - Per queue reset improvements - initial smartmux support amdkfd: - enable KFD on loongarch - mtype fix for ext coherent system memory radeon: - CS validation additional GL extensions - drop console lock during suspend/resume - bump driver version msm: - VM BIND support - CI: infrastructure updates - UBWC single source of truth - decouple GPU and KMS support - DP: rework I/O accessors - DPU: SM8750 support - DSI: SM8750 support - GPU: X1-45 support and speedbin support for X1-85 - MDSS: SM8750 support nova: - register! macro improvements - DMA object abstraction - VBIOS parser + fwsec lookup - sysmem flush page support - falcon: generic falcon boot code and HAL - FWSEC-FRTS: fb setup and load/execute ivpu: - Add Wildcat Lake support - Add turbo flag ast: - improve hardware generations implementation imx: - IMX8qxq Display Controller support lima: - Rockchip RK3528 GPU support nouveau: - fence handling cleanup panfrost: - MT8370 support - bo labeling - 64-bit register access qaic: - add RAS support rockchip: - convert inno_hdmi to a bridge rz-du: - add RZ/V2H(P) support - MIPI-DSI DCS support sitronix: - ST7567 support sun4i: - add H616 support tidss: - add TI AM62L support - AM65x OLDI bridge support bochs: - drm panic support vkms: - YUV and R* format support - use faux device vmwgfx: - fence improvements hyperv: - move out of simple - add drm_panic support" * tag 'drm-next-2025-07-30' of https://gitlab.freedesktop.org/drm/kernel: (1479 commits) drm/tidss: oldi: convert to devm_drm_bridge_alloc() API drm/tidss: encoder: convert to devm_drm_bridge_alloc() drm/amdgpu: move reset support type checks into the caller drm/amdgpu/sdma7: re-emit unprocessed state on ring reset drm/amdgpu/sdma6: re-emit unprocessed state on ring reset drm/amdgpu/sdma5.2: re-emit unprocessed state on ring reset drm/amdgpu/sdma5: re-emit unprocessed state on ring reset drm/amdgpu/gfx12: re-emit unprocessed state on ring reset drm/amdgpu/gfx11: re-emit unprocessed state on ring reset drm/amdgpu/gfx10: re-emit unprocessed state on ring reset drm/amdgpu/gfx9.4.3: re-emit unprocessed state on kcq reset drm/amdgpu/gfx9: re-emit unprocessed state on kcq reset drm/amdgpu: Add WARN_ON to the resource clear function drm/amd/pm: Use cached metrics data on SMUv13.0.6 drm/amd/pm: Use cached data for min/max clocks gpu: nova-core: fix bounds check in PmuLookupTableEntry::new drm/amdgpu: Replace HQD terminology with slots naming drm/amdgpu: Add user queue instance count in HW IP info drm/amd/amdgpu: Add helper functions for isp buffers drm/amd/amdgpu: Initialize swnode for ISP MFD device ...