linux.git/drivers/gpu/drm/drm_writeback.c, branch v6.18.21

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

2025-07-31T02:26:49+00:00

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
  ...

drm: writeback: Fix drm_writeback_connector_cleanup signature

2025-06-23T08:12:44+00:00

The drm_writeback_connector_cleanup have the signature:

     static void drm_writeback_connector_cleanup(
		struct drm_device *dev,
		struct drm_writeback_connector *wb_connector)

But it is stored and used as a drmres_release_t

    typedef void (*drmres_release_t)(struct drm_device *dev, void *res);

While the current code is valid and does not produce any warning, the
CFI runtime check (CONFIG_CFI_CLANG) can fail because the function
signature is not the same as drmres_release_t.

In order to fix this, change the function signature to match what is
expected by drmres_release_t.

Fixes: 1914ba2b91ea ("drm: writeback: Create drmm variants for drm_writeback_connector initialization")

Suggested-by: Mark Yacoub 
Reviewed-by: Maíra Canal 
Link: https://lore.kernel.org/r/20250429-drm-fix-writeback-cleanup-v2-1-548ff3a4e284@bootlin.com
Signed-off-by: Louis Chauvet

drm: Include

2025-06-16T07:01:23+00:00

Fix the compile-time warnings

  drivers/gpu/drm/drm_atomic.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_atomic_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_atomic_state_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_atomic_uapi.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_auth.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_buddy.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_color_mgmt.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_connector.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_damage_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_debugfs_crc.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_drv.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_edid.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_exec.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_fb_dma_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_file.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_flip_work.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_format_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_gpusvm.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_gpuvm.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_managed.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_mipi_dbi.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_mipi_dsi.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_mode_config.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_modeset_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_modeset_lock.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_panic.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_plane.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_plane_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_print.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_privacy_screen.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_self_refresh_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_simple_kms_helper.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_suballoc.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_syncobj.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_vblank_work.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_vma_manager.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/drm_writeback.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/lib/drm_random.c: warning: EXPORT_SYMBOL() is used, but #include  is missing
  drivers/gpu/drm/tests/drm_kunit_helpers.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/20250612121633.229222-3-tzimmermann@suse.de

drm: writeback: Fix kernel doc name

2025-02-20T14:02:09+00:00

During the creation of drmm_ variants for writeback connector, one
function was renamed, but not the kernel doc.

To remove the warning, use the proper name in kernel doc.

Fixes: 135d8fc7af44 ("drm: writeback: Create an helper for drm_writeback_connector initialization")
Reported-by: Stephen Rothwell 
Closes: https://lore.kernel.org/all/20250207142201.550ce870@canb.auug.org.au/
Reviewed-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/20250207-b4-fix-warning-v1-1-b4964beb60a3@bootlin.com
Signed-off-by: Louis Chauvet

drm: writeback: Fix use after free in drm_writeback_connector_cleanup()

2025-02-13T08:50:20+00:00

The drm_writeback_cleanup_job() function frees "pos" so call
list_del(&pos->list_entry) first to avoid a use after free.

Fixes: 1914ba2b91ea ("drm: writeback: Create drmm variants for drm_writeback_connector initialization")
Signed-off-by: Dan Carpenter 
Reviewed-by: Dmitry Baryshkov 
Link: https://patchwork.freedesktop.org/patch/msgid/78abd541-71e9-4b3b-a05d-2c7caf8d5b2f@stanley.mountain
Signed-off-by: Maxime Ripard

drm: writeback: Create drmm variants for drm_writeback_connector initialization

2025-01-21T09:32:33+00:00

To allows driver to only use drmm objects, add helper to create
drm_writeback_connectors with automated lifetime management.

Acked-by: Thomas Zimmermann 
Acked-by: Maxime Ripard 
Link: https://patchwork.freedesktop.org/patch/msgid/20250116-google-vkms-managed-v9-7-3e4ae1bd05a0@bootlin.com
Signed-off-by: Louis Chauvet

drm: writeback: Add missing cleanup in case of initialization failure

2025-01-21T09:32:33+00:00

The current implementation of drm_writeback_connector initialization does
not properly clean up all resources in case of failure (allocated
properties and possible_encoders). Add this cleaning in case of failure.

Acked-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20250116-google-vkms-managed-v9-6-3e4ae1bd05a0@bootlin.com
Signed-off-by: Louis Chauvet

drm: writeback: Create an helper for drm_writeback_connector initialization

2025-01-21T09:32:32+00:00

As the old drm and the new drmm variants of drm_writeback_connector
requires almost the same initialization, create an internal helper to do
most of the initialization work.

Currently there is no cleanup function for writeback connectors. To allows
implementation of drmm variant of writeback connector, create a cleanup
function that can be used to properly remove all the writeback-specific
properties and allocations.

This also introduce an helper to cleanup only the drm_writeback_connector
properties, so it can be used during initialization to cleanup in case of
failure.

Reviewed-by: Maxime Ripard 
Acked-by: Thomas Zimmermann 
Link: https://patchwork.freedesktop.org/patch/msgid/20250116-google-vkms-managed-v9-5-3e4ae1bd05a0@bootlin.com
Signed-off-by: Louis Chauvet

drm/writeback: remove pointless enable_signaling implementation

2024-10-09T12:23:37+00:00

Just returning true here is a no-op, remove the optional callback.

Signed-off-by: Christian König 
Reviewed-by: Simona Vetter 
Link: https://patchwork.freedesktop.org/patch/msgid/20240911085903.1496-4-christian.koenig@amd.com

drm: Drop drm_framebuffer.h from drm_crtc.h

2022-06-20T20:53:55+00:00

drm_crtc.h has no need for drm_frambuffer.h, so don't include it.
Avoids useless rebuilds of the entire universe when
touching drm_framebuffer.h.

Quite a few placs do currently depend on drm_framebuffer.h without
actually including it directly. All of those need to be fixed
up.

v2: Fix up msm some more
v2: Deal with ingenic and shmobile as well

Signed-off-by: Ville Syrjälä 
Link: https://patchwork.freedesktop.org/patch/msgid/20220614095449.29311-1-ville.syrjala@linux.intel.com
Acked-by: Sam Ravnborg 
Acked-by: Jani Nikula