linux-toradex.git/drivers/gpu/drm/bridge/analogix, branch master

drm/bridge: anx7625: Fix invalid EDID size

2026-01-21T07:01:30+00:00

DRM checks EDID block count against allocated size in drm_edid_valid
function. We have to allocate the right EDID size instead of the max
size to prevent the EDID to be reported as invalid.

Cc: stable@kernel.org
Fixes: 7c585f9a71aa ("drm/bridge: anx7625: use struct drm_edid more")
Reviewed-by: Dmitry Baryshkov 
Signed-off-by: Loic Poulain 
Link: https://patch.msgid.link/20251218151307.95491-1-loic.poulain@oss.qualcomm.com
Signed-off-by: Dmitry Baryshkov

Merge tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel

2025-10-02T19:47:25+00:00

Pull drm updates from Dave Airlie:
 "cross-subsystem:
   - i2c-hid: Make elan touch controllers power on after panel is
     enabled
   - dt bindings for STM32MP25 SoC
   - pci vgaarb: use screen_info helpers
   - rust pin-init updates
   - add MEI driver for late binding firmware update/load

  uapi:
   - add ioctl for reassigning GEM handles
   - provide boot_display attribute on boot-up devices

  core:
   - document DRM_MODE_PAGE_FLIP_EVENT
   - add vendor specific recovery method to drm device wedged uevent

  gem:
   - Simplify gpuvm locking

  ttm:
   - add interface to populate buffers

  sched:
   - Fix race condition in trace code

  atomic:
   - Reallow no-op async page flips

  display:
   - dp: Fix command length

  video:
   - Improve pixel-format handling for struct screen_info

  rust:
   - drop Opaque<> from ioctl args
   - Alloc:
       - BorrowedPage type and AsPageIter traits
       - Implement Vmalloc::to_page() and VmallocPageIter
   - DMA/Scatterlist:
       - Add dma::DataDirection and type alias for dma_addr_t
       - Abstraction for struct scatterlist and sg_table
   - DRM:
       - simplify use of generics
       - add DriverFile type alias
       - drop Object::SIZE
   - Rust:
       - pin-init tree merge
       - Various methods for AsBytes and FromBytes traits

  gpuvm:
   - Support madvice in Xe driver

  gpusvm:
   - fix hmm_pfn_to_map_order usage in gpusvm

  bridge:
   - Improve and fix ref counting on bridge management
   - cdns-dsi: Various improvements to mode setting
   - Support Solomon SSD2825 plus DT bindings
   - Support Waveshare DSI2DPI plus DT bindings
   - Support Content Protection property
   - display-connector: Improve DP display detection
   - Add support for Radxa Ra620 plus DT bindings
   - adv7511: Provide SPD and HDMI infoframes
   - it6505: Replace crypto_shash with sha()
   - synopsys: Add support for DW DPTX Controller plus DT bindings
   - adv7511: Write full Audio infoframe
   - ite6263: Support vendor-specific infoframes
   - simple: Add support for Realtek RTD2171 DP-to-HDMI plus DT bindings

  panel:
   - panel-edp: Support mt8189 Chromebooks; Support BOE NV140WUM-N64;
     Support SHP LQ134Z1; Fixes
   - panel-simple: Support Olimex LCD-OLinuXino-5CTS plus DT bindings
   - Support Samsung AMS561RA01
   - Support Hydis HV101HD1 plus DT bindings
   - ilitek-ili9881c: Refactor mode setting; Add support for Bestar
     BSD1218-A101KL68 LCD plus DT bindings
   - lvds: Add support for Ampire AMP19201200B5TZQW-T03 to DT bindings
   - edp: Add support for additonal mt8189 Chromebook panels
   - lvds: Add DT bindings for EDT ETML0700Z8DHA

  amdgpu:
   - add CRIU support for gem objects
   - RAS updates
   - VCN SRAM load fixes
   - EDID read fixes
   - eDP ALPM support
   - Documentation updates
   - Rework PTE flag generation
   - DCE6 fixes
   - VCN devcoredump cleanup
   - MMHUB client id fixes
   - VCN 5.0.1 RAS support
   - SMU 13.0.x updates
   - Expanded PCIe DPC support
   - Expanded VCN reset support
   - VPE per queue reset support
   - give kernel jobs unique id for tracing
   - pre-populate exported buffers
   - cyan skillfish updates
   - make vbios build number available in sysfs
   - userq updates
   - HDCP updates
   - support MMIO remap page as ttm pool
   - JPEG parser updates
   - DCE6 DC updates
   - use devm for i2c buses
   - GPUVM locking updates
   - Drop non-DC DCE11 code
   - improve fallback handling for pixel encoding

  amdkfd:
   - SVM/page migration fixes
   - debugfs fixes
   - add CRIO support for gem objects
   - SVM updates

  radeon:
   - use dev_warn_once in CS parsers

  xe:
   - add madvise interface
   - add DRM_IOCTL_XE_VM_QUERY_MEMORY_RANGE_ATTRS to query VMA count
     and memory attributes
   - drop L# bank mask reporting from media GT3 on Xe3+.
   - add SLPC power_profile sysfs interface
   - add configs attribs to add post/mid context-switch commands
   - handle firmware reported hardware errors notifying userspace with
     device wedged uevent
   - use same dir structure across sysfs/debugfs
   - cleanup and future proof vram region init
   - add G-states and PCI link states to debugfs
   - Add SRIOV support for CCS surfaces on Xe2+
   - Enable SRIOV PF mode by default on supported platforms
   - move flush to common code
   - extended core workarounds for Xe2/3
   - use DRM scheduler for delayed GT TLB invalidations
   - configs improvements and allow VF device enablement
   - prep work to expose mmio regions to userspace
   - VF migration support added
   - prepare GPU SVM for THP migration
   - start fixing XE_PAGE_SIZE vs PAGE_SIZE
   - add PSMI support for hw validation
   - resize VF bars to max possible size according to number of VFs
   - Ensure GT is in C0 during resume
   - pre-populate exported buffers
   - replace xe_hmm with gpusvm
   - add more SVM GT stats to debugfs
   - improve fake pci and WA kunnit handle for new platform testing
   - Test GuC to GuC comms to add debugging
   - use attribute groups to simplify sysfs registration
   - add Late Binding firmware code to interact with MEI

  i915:
   - apply multiple JSL/EHL/Gen7/Gen6 workarounds properly
   - protect against overflow in active_engine()
   - Use try_cmpxchg64() in __active_lookup()
   - include GuC registers in error state
   - get rid of dev->struct_mutex
   - iopoll: generalize read_poll_timout
   - lots more display refactoring
   - Reject HBR3 in any eDP Panel
   - Prune modes for YUV420
   - Display Wa fix, additions, and updates
   - DP: Fix 2.7 Gbps link training on g4x
   - DP: Adjust the idle pattern handling
   - DP: Shuffle the link training code a bit
   - Don't set/read the DSI C clock divider on GLK
   - Enable_psr kernel parameter changes
   - Type-C enabled/disconnected dp-alt sink
   - Wildcat Lake enabling
   - DP HDR updates
   - DRAM detection
   - wait PSR idle on dsb commit
   - Remove FBC modulo 4 restriction for ADL-P+
   - panic: refactor framebuffer allocation

  habanalabs:
   - debug/visibility improvements
   - vmalloc-backed coherent mmap support
   - HLDIO infrastructure

  nova-core:
   - various register!() macro improvements
   - minor vbios/firmware fixes/refactoring
   - advance firmware boot stages; process Booter and patch signatures
   - process GSP and GSP bootloader
   - Add r570.144 firmware bindings and update to it
   - Move GSP boot code to own module
   - Use new pin-init features to store driver's private data in a
     single allocation
   - Update ARef import from sync::aref

  nova-drm:
   - Update ARef import from sync::aref

  tyr:
   - initial driver skeleton for a rust driver for ARM Mali GPUs
   - capable of powering up, query metadata and provide it to userspace.

  msm:
   - GPU and Core:
      - in DT bindings describe clocks per GPU type
      - GMU bandwidth voting for x1-85
      - a623/a663 speedbins
      - cleanup some remaining no-iommu leftovers after VM_BIND conversion
      - fix GEM obj 32b size truncation
      - add missing VM_BIND param validation
      - IFPC for x1-85 and a750
      - register xml and gen_header.py sync from mesa
   - Display:
      - add missing bindings for display on SC8180X
      - added DisplayPort MST bindings
      - conversion from round_rate() to determine_rate()

  amdxdna:
   - add IOCTL_AMDXDNA_GET_ARRAY
   - support user space allocated buffers
   - streamline PM interfaces
   - Refactoring wrt. hardware contexts
   - improve error reporting

  nouveau:
   - use GSP firmware by default
   - improve error reporting
   - Pre-populate exported buffers

  ast:
   - Clean up detection of DRAM config

  exynos:
   - add DSIM bridge driver support for Exynos7870
   - Document Exynos7870 DSIM compatible in dt-binding

  panthor:
   - Print task/pid on errors
   - Add support for Mali G710, G510, G310, Gx15, Gx20, Gx25
   - Improve cache flushing
   - Fail VM bind if BO has offset

  renesas:
   - convert to RUNTIME_PM_OPS

  rcar-du:
   - Make number of lanes configurable
   - Use RUNTIME_PM_OPS
   - Add support for DSI commands

  rocket:
   - Add driver for Rockchip NPU plus DT bindings
   - Use kfree() and sizeof() correctly
   - Test DMA status

  rockchip:
   - dsi2: Add support for RK3576 plus DT bindings
   - Add support for RK3588 DPTX output

  tidss:
   - Use crtc_ fields for programming display mode
   - Remove other drivers from aperture

  pixpaper:
   - Add support for Mayqueen Pixpaper plus DT bindings

  v3d:
   - Support querying nubmer of GPU resets for KHR_robustness

  stm:
   - Clean up logging
   - ltdc: Add support support for STM32MP257F-EV1 plus DT bindings

  sitronix:
   - st7571-i2c: Add support for inverted displays and 2-bit grayscale

  tidss:
   - Convert to kernel's FIELD_ macros

  vesadrm:
   - Support 8-bit palette mode

  imagination:
   - Improve power management
   - Add support for TH1520 GPU
   - Support Risc-V architectures

  v3d:
   - Improve job management and locking

  vkms:
   - Support variants of ARGB8888, ARGB16161616, RGB565, RGB888 and P01x
   - Spport YUV with 16-bit components"

* tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel: (1455 commits)
  drm/amd: Add name to modes from amdgpu_connector_add_common_modes()
  drm/amd: Drop some common modes from amdgpu_connector_add_common_modes()
  drm/amdgpu: update MODULE_PARM_DESC for freesync_video
  drm/amd: Use dynamic array size declaration for amdgpu_connector_add_common_modes()
  drm/amd/display: Share dce100_validate_global with DCE6-8
  drm/amd/display: Share dce100_validate_bandwidth with DCE6-8
  drm/amdgpu: Fix fence signaling race condition in userqueue
  amd/amdkfd: enhance kfd process check in switch partition
  amd/amdkfd: resolve a race in amdgpu_amdkfd_device_fini_sw
  drm/amd/display: Reject modes with too high pixel clock on DCE6-10
  drm/amd: Drop unnecessary check in amdgpu_connector_add_common_modes()
  drm/amd/display: Only enable common modes for eDP and LVDS
  drm/amdgpu: remove the redeclaration of variable i
  drm/amdgpu/userq: assign an error code for invalid userq va
  drm/amdgpu: revert "rework reserved VMID handling" v2
  drm/amdgpu: remove leftover from enforcing isolation by VMID
  drm/amdgpu: Add fallback to pipe reset if KCQ ring reset fails
  accel/habanalabs: add Infineon version check
  accel/habanalabs/gaudi2: read preboot status after recovering from dirty state
  accel/habanalabs: add HL_GET_P_STATE passthrough type
  ...

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

2025-09-15T18:44:42+00:00

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

Merge tag 'v6.17-rc6' into drm-next

2025-09-15T07:51:07+00:00

This is a backmerge of Linux 6.17-rc6, needed for msm,
also requested by misc.

Signed-off-by: Dave Airlie

drm/bridge: anx7625: register content protect property

2025-08-20T15:22:01+00:00

Set the `support_hdcp` bit to enable the connector to register content
protection during initialization.

Signed-off-by: Hsin-Yi Wang 
Reviewed-by: Sean Paul 
Signed-off-by: Fei Shao 
Signed-off-by: Douglas Anderson 
Link: https://lore.kernel.org/r/20250812082135.3351172-3-fshao@chromium.org

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

2025-08-15T03:19:56+00:00

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

drm/bridge: Pass down connector to drm bridge detect hook

2025-07-14T15:23:18+00:00

In some application scenarios, we hope to get the corresponding
connector when the bridge's detect hook is invoked.

In most cases, we can get the connector by drm_atomic_get_connector_for_encoder
if the encoder attached to the bridge is enabled, however there will
still be some scenarios where the detect hook of the bridge is called
but the corresponding encoder has not been enabled yet. For instance,
this occurs when the device is hot plug in for the first time.

Since the call to bridge's detect is initiated by the connector, passing
down the corresponding connector directly will make things simpler.

Signed-off-by: Andy Yan 
Reviewed-by: Dmitry Baryshkov 
Link: https://lore.kernel.org/r/20250703125027.311109-3-andyshrk@163.com
[DB: added the chunk to the cdn-dp driver]
Signed-off-by: Dmitry Baryshkov

drm/bridge: analogix_dp: Use devm_drm_bridge_alloc() API

2025-07-07T10:40:38+00:00

devm_drm_bridge_alloc() is the new API to be used for allocating
(and partially initializing) a private driver struct embedding
a struct drm_bridge.

Analogix DP driver somehow missed the automated conversion in commit
9c399719cfb9 ("drm: convert many bridge drivers from devm_kzalloc() to
devm_drm_bridge_alloc() API"), what causes the following warning:

------------[ cut here ]------------
WARNING: lib/refcount.c:25 at drm_bridge_attach+0x2c/0x248, CPU#1: kworker/u8:1/34
refcount_t: addition on 0; use-after-free.
Modules linked in:
CPU: 1 UID: 0 PID: 34 Comm: kworker/u8:1 Not tainted 6.16.0-rc3-next-20250627-dirty #15839 PREEMPT
Hardware name: Samsung Exynos (Flattened Device Tree)
Workqueue: events_unbound deferred_probe_work_func
Call trace:
 unwind_backtrace from show_stack+0x10/0x14
 show_stack from dump_stack_lvl+0x68/0x88
 dump_stack_lvl from __warn+0x94/0x1f0
 __warn from warn_slowpath_fmt+0x124/0x1bc
 warn_slowpath_fmt from drm_bridge_attach+0x2c/0x248
 drm_bridge_attach from analogix_dp_bind+0x70/0xc8
 analogix_dp_bind from exynos_dp_bind+0x58/0xc4
 exynos_dp_bind from component_bind_all+0x11c/0x27c
 component_bind_all from exynos_drm_bind+0xe8/0x198
 exynos_drm_bind from try_to_bring_up_aggregate_device+0x200/0x2d8
 try_to_bring_up_aggregate_device from __component_add+0xb0/0x170
 __component_add from exynos_dp_probe+0xc0/0x164
 exynos_dp_probe from platform_probe+0x5c/0xb8
 platform_probe from really_probe+0xe0/0x3d8
 really_probe from __driver_probe_device+0x9c/0x1e0
 __driver_probe_device from driver_probe_device+0x30/0xc0
 driver_probe_device from __device_attach_driver+0xa8/0x120
 __device_attach_driver from bus_for_each_drv+0x84/0xdc
 bus_for_each_drv from __device_attach+0xb0/0x20c
 __device_attach from bus_probe_device+0x8c/0x90
 bus_probe_device from deferred_probe_work_func+0x98/0xe0
 deferred_probe_work_func from process_one_work+0x24c/0x70c
 process_one_work from worker_thread+0x1b8/0x3bc
 worker_thread from kthread+0x13c/0x264
 kthread from ret_from_fork+0x14/0x28
...
---[ end trace 0000000000000000 ]---

Fix this by switching the driver to the new API.

Note the above warning only appears starting with commit a7748dd127ea
("drm/bridge: get/put the bridge reference in drm_bridge_add/remove()")
which is the first commmit having added a drm_bridge_get/put() pair and
thus exposing the incorrect initial refcount issue.

Signed-off-by: Marek Szyprowski 
Fixes: a7748dd127ea ("drm/bridge: get/put the bridge reference in drm_bridge_add/remove()")
Reviewed-by: Luca Ceresoli 
Link: https://lore.kernel.org/r/20250627165652.580798-1-m.szyprowski@samsung.com
[Luca: add Fixes tag and mention the reason in commit message]
Signed-off-by: Luca Ceresoli

drm/bridge: Include

2025-06-16T07:02:25+00:00

Fix compile-time warnings

  drivers/gpu/drm/bridge/analogix/analogix-i2c-dptx.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/analogix/analogix_dp_core.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/aux-bridge.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/aux-hpd-bridge.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/imx/imx-legacy-bridge.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/panel.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/samsung-dsim.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/synopsys/dw-hdmi-qp.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/synopsys/dw-hdmi.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/bridge/synopsys/dw-mipi-dsi2.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_bridge.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_bridge_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing

Signed-off-by: Thomas Zimmermann 
Fixes: a934a57a42f6 ("scripts/misc-check: check missing #include  when W=1")
Reviewed-by: André Almeida 
Cc: Masahiro Yamada 
Cc: Nathan Chancellor 
Link: https://lore.kernel.org/r/20250612121633.229222-4-tzimmermann@suse.de

Merge drm/drm-next into drm-misc-next

2025-06-11T07:01:34+00:00

Backmerging to forward to v6.16-rc1

Signed-off-by: Thomas Zimmermann