linux-toradex.git/rust/kernel/lib.rs, branch v6.19 Linux kernel for Apalis and Colibri modules Merge tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb 2025-12-07T02:42:12+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-07T02:42:12+00:00 f5e9d31e79c1ce8ba948ecac74d75e9c8d2f0c87 Pull USB/Thunderbolt updates from Greg KH: "Here is the big set of USB and Thunderbolt driver updates for 6.19-rc1. Nothing major here, just lots of tiny updates for most of the common USB drivers. Included in here are: - more xhci driver updates and fixes - Thunderbolt driver cleanups - usb serial driver updates - typec driver updates - USB tracepoint additions - dwc3 driver updates, including support for Apple hardware - lots of other smaller driver updates and cleanups All of these have been in linux-next for a while with no reported issues" * tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits) usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt USB: serial: option: move Telit 0x10c7 composition in the right place USB: serial: option: add Telit Cinterion FE910C04 new compositions usb: typec: ucsi: fix use-after-free caused by uec->work usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe() usb: dwc3: core: Remove redundant comment in core init usb: phy: Initialize struct usb_phy list_head USB: serial: option: add Foxconn T99W760 usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive. usb: typec: hd3ss3220: Enable VBUS based on ID pin state dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users USB: add WQ_PERCPU to alloc_workqueue users dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform drivers/usb/storage: use min() instead of min_t() usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE usb: ohci-da8xx: remove unused platform data usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper usb: uas: reduce time under spinlock usb: dwc3: eic7700: Add EIC7700 USB driver ... 
Pull USB/Thunderbolt updates from Greg KH:
 "Here is the big set of USB and Thunderbolt driver updates for
  6.19-rc1. Nothing major here, just lots of tiny updates for most of
  the common USB drivers. Included in here are:

   - more xhci driver updates and fixes

   - Thunderbolt driver cleanups

   - usb serial driver updates

   - typec driver updates

   - USB tracepoint additions

   - dwc3 driver updates, including support for Apple hardware

   - lots of other smaller driver updates and cleanups

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'usb-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (161 commits)
  usb: gadget: tegra-xudc: Always reinitialize data toggle when clear halt
  USB: serial: option: move Telit 0x10c7 composition in the right place
  USB: serial: option: add Telit Cinterion FE910C04 new compositions
  usb: typec: ucsi: fix use-after-free caused by uec->work
  usb: typec: ucsi: fix probe failure in gaokun_ucsi_probe()
  usb: dwc3: core: Remove redundant comment in core init
  usb: phy: Initialize struct usb_phy list_head
  USB: serial: option: add Foxconn T99W760
  usb: usb-storage: No additional quirks need to be added to the EL-R12 optical drive.
  usb: typec: hd3ss3220: Enable VBUS based on ID pin state
  dt-bindings: usb: ti,hd3ss3220: Add support for VBUS based on ID state
  usb: typec: anx7411: add WQ_PERCPU to alloc_workqueue users
  USB: add WQ_PERCPU to alloc_workqueue users
  dt-bindings: usb: dwc3-xilinx: Describe the reset constraint for the versal platform
  drivers/usb/storage: use min() instead of min_t()
  usb: raw-gadget: cap raw_io transfer length to KMALLOC_MAX_SIZE
  usb: ohci-da8xx: remove unused platform data
  usb: gadget: functionfs: use dma_buf_unmap_attachment_unlocked() helper
  usb: uas: reduce time under spinlock
  usb: dwc3: eic7700: Add EIC7700 USB driver
  ...
Merge tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux 2025-12-06T16:27:07+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-06T16:27:07+00:00 c84d574698bad2c02aad506dfe712f83cbe3b771 Pull module updates from Daniel Gomez: "Rust module parameter support: - Add Rust module parameter support, enabling Rust kernel modules to declare and use module parameters. The rust_minimal sample module demonstrates this, and the rust null block driver will be the first to use it in the next cycle. This also adds the Rust module files under the modules subsystem as agreed between the Rust and modules maintainers. Hardening: - Add compile-time check for embedded NUL characters in MODULE_*() macros. This module metadata was once used (and maybe still) to bypass license enforcement (LWN article from 2003): https://lwn.net/Articles/82305/ [1] MAINTAINERS: - Add Aaron Tomlin as reviewer for the Modules subsystem" * tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux: MAINTAINERS: Add myself as reviewer for module support module: Add compile-time check for embedded NUL characters media: radio: si470x: Fix DRIVER_AUTHOR macro definition media: dvb-usb-v2: lmedm04: Fix firmware macro definitions modules: add rust modules files to MAINTAINERS rust: samples: add a module parameter to the rust_minimal sample rust: module: update the module macro with module parameter support rust: module: use a reference in macros::module::module rust: introduce module_param module rust: str: add radix prefixed integer parsing functions rust: sync: add `SetOnce` 
Pull module updates from Daniel Gomez:
 "Rust module parameter support:

   - Add Rust module parameter support, enabling Rust kernel modules to
     declare and use module parameters. The rust_minimal sample module
     demonstrates this, and the rust null block driver will be the first
     to use it in the next cycle. This also adds the Rust module files
     under the modules subsystem as agreed between the Rust and modules
     maintainers.

  Hardening:

   - Add compile-time check for embedded NUL characters in MODULE_*()
     macros. This module metadata was once used (and maybe still) to
     bypass license enforcement (LWN article from 2003):

	https://lwn.net/Articles/82305/ [1]

  MAINTAINERS:

   - Add Aaron Tomlin as reviewer for the Modules subsystem"

* tag 'modules-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/modules/linux:
  MAINTAINERS: Add myself as reviewer for module support
  module: Add compile-time check for embedded NUL characters
  media: radio: si470x: Fix DRIVER_AUTHOR macro definition
  media: dvb-usb-v2: lmedm04: Fix firmware macro definitions
  modules: add rust modules files to MAINTAINERS
  rust: samples: add a module parameter to the rust_minimal sample
  rust: module: update the module macro with module parameter support
  rust: module: use a reference in macros::module::module
  rust: introduce module_param module
  rust: str: add radix prefixed integer parsing functions
  rust: sync: add `SetOnce`
Merge tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core 2025-12-06T05:29:02+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-06T05:29:02+00:00 416f99c3b16f582a3fc6d64a1f77f39d94b76de5 Pull driver core updates from Danilo Krummrich: "Arch Topology: - Move parse_acpi_topology() from arm64 to common code for reuse in RISC-V CPU: - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping - Print a newline (or 0x0A) instead of '(null)' reading /sys/devices/system/cpu/nohz_full when nohz_full= is not set debugfs - Remove (broken) 'no-mount' mode - Remove redundant access mode checks in debugfs_get_tree() and debugfs_create_*() functions Devres: - Remove unused devm_free_percpu() helper - Move devm_alloc_percpu() from device.h to devres.h Firmware Loader: - Replace simple_strtol() with kstrtoint() - Do not call cancel_store() when no upload is in progress kernfs: - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE - Fix a missing unwind path in __kernfs_new_node() Misc: - Increase the name size in struct auxiliary_device_id to 40 characters - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to alloc_workqueue() Platform: - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap functions Rust: - Auxiliary: - Unregister auxiliary device on parent device unbind - Move parent() to impl Device; implement device context aware parent() for Device<Bound> - Illustrate how to safely obtain a driver's device private data when calling from an auxiliary driver into the parant device driver - DebugFs: - Implement support for binary large objects - Device: - Let probe() return the driver's device private data as pinned initializer, i.e. impl PinInit<Self, Error> - Implement safe accessor for a driver's device private data for Device<Bound> (returned reference can't out-live driver binding and guarantees the correct private data type) - Implement AsBusDevice trait, to be used by class device abstractions to derive the bus device type of the parent device - DMA: - Store raw pointer of allocation as NonNull - Use start_ptr() and start_ptr_mut() to inherit correct mutability of self - FS: - Add file::Offset type alias - I2C: - Add abstractions for I2C device / driver infrastructure - Implement abstractions for manual I2C device registrations - I/O: - Use "kernel vertical" style for imports - Define ResourceSize as resource_size_t - Move ResourceSize to top-level I/O module - Add type alias for phys_addr_t - Implement Rust version of read_poll_timeout_atomic() - PCI: - Use "kernel vertical" style for imports - Move I/O and IRQ infrastructure to separate files - Add support for PCI interrupt vectors - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert an IrqVector bound to specific pci::Device into an IrqRequest bound to the same pci::Device's parent Device - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods - PinInit: - Add {pin_}init_scope() to execute code before creating an initializer - Platform: - Leverage pin_init_scope() to get rid of redundant Result in IRQ methods - Timekeeping: - Implement abstraction of udelay() - Uaccess: - Implement read_slice_partial() and read_slice_file() for UserSliceReader - Implement write_slice_partial() and write_slice_file() for UserSliceWriter sysfs: - Prepare the constification of struct attribute" * tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits) rust: pci: fix build failure when CONFIG_PCI_MSI is disabled debugfs: Fix default access mode config check debugfs: Remove broken no-mount mode debugfs: Remove redundant access mode checks driver core: Check drivers_autoprobe for all added devices driver core: WQ_PERCPU added to alloc_workqueue users driver core: replace use of system_unbound_wq with system_dfl_wq tick/nohz: Expose housekeeping CPUs in sysfs tick/nohz: avoid showing '(null)' if nohz_full= not set sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE mod_devicetable: Bump auxiliary_device_id name size sysfs: simplify attribute definition macros samples/kobject: constify 'struct foo_attribute' samples/kobject: add is_visible() callback to attribute group sysfs: attribute_group: enable const variants of is_visible() sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE() sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS() sysfs: attribute_group: allow registration of const attribute ... 
Pull driver core updates from Danilo Krummrich:
 "Arch Topology:
   - Move parse_acpi_topology() from arm64 to common code for reuse in
     RISC-V

  CPU:
   - Expose housekeeping CPUs through /sys/devices/system/cpu/housekeeping
   - Print a newline (or 0x0A) instead of '(null)' reading
     /sys/devices/system/cpu/nohz_full when nohz_full= is not set

  debugfs
   - Remove (broken) 'no-mount' mode
   - Remove redundant access mode checks in debugfs_get_tree() and
     debugfs_create_*() functions

  Devres:
   - Remove unused devm_free_percpu() helper
   - Move devm_alloc_percpu() from device.h to devres.h

  Firmware Loader:
   - Replace simple_strtol() with kstrtoint()
   - Do not call cancel_store() when no upload is in progress

  kernfs:
   - Increase struct super_block::maxbytes to MAX_LFS_FILESIZE
   - Fix a missing unwind path in __kernfs_new_node()

  Misc:
   - Increase the name size in struct auxiliary_device_id to 40
     characters
   - Replace system_unbound_wq with system_dfl_wq and add WQ_PERCPU to
     alloc_workqueue()

  Platform:
   - Replace ERR_PTR() with IOMEM_ERR_PTR() in platform ioremap
     functions

  Rust:
   - Auxiliary:
      - Unregister auxiliary device on parent device unbind
      - Move parent() to impl Device; implement device context aware
        parent() for Device<Bound>
      - Illustrate how to safely obtain a driver's device private data
        when calling from an auxiliary driver into the parant device
        driver

   - DebugFs:
      - Implement support for binary large objects

   - Device:
      - Let probe() return the driver's device private data as pinned
        initializer, i.e. impl PinInit<Self, Error>
      - Implement safe accessor for a driver's device private data for
        Device<Bound> (returned reference can't out-live driver binding
        and guarantees the correct private data type)
      - Implement AsBusDevice trait, to be used by class device
        abstractions to derive the bus device type of the parent device

   - DMA:
      - Store raw pointer of allocation as NonNull
      - Use start_ptr() and start_ptr_mut() to inherit correct
        mutability of self

   - FS:
      - Add file::Offset type alias

   - I2C:
      - Add abstractions for I2C device / driver infrastructure
      - Implement abstractions for manual I2C device registrations

   - I/O:
      - Use "kernel vertical" style for imports
      - Define ResourceSize as resource_size_t
      - Move ResourceSize to top-level I/O module
      - Add type alias for phys_addr_t
      - Implement Rust version of read_poll_timeout_atomic()

   - PCI:
      - Use "kernel vertical" style for imports
      - Move I/O and IRQ infrastructure to separate files
      - Add support for PCI interrupt vectors
      - Implement TryInto<IrqRequest<'a>> for IrqVector<'a> to convert
        an IrqVector bound to specific pci::Device into an IrqRequest
        bound to the same pci::Device's parent Device
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - PinInit:
      - Add {pin_}init_scope() to execute code before creating an
        initializer

   - Platform:
      - Leverage pin_init_scope() to get rid of redundant Result in IRQ
        methods

   - Timekeeping:
      - Implement abstraction of udelay()

   - Uaccess:
      - Implement read_slice_partial() and read_slice_file() for
        UserSliceReader
      - Implement write_slice_partial() and write_slice_file() for
        UserSliceWriter

  sysfs:
   - Prepare the constification of struct attribute"

* tag 'driver-core-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/driver-core/driver-core: (75 commits)
  rust: pci: fix build failure when CONFIG_PCI_MSI is disabled
  debugfs: Fix default access mode config check
  debugfs: Remove broken no-mount mode
  debugfs: Remove redundant access mode checks
  driver core: Check drivers_autoprobe for all added devices
  driver core: WQ_PERCPU added to alloc_workqueue users
  driver core: replace use of system_unbound_wq with system_dfl_wq
  tick/nohz: Expose housekeeping CPUs in sysfs
  tick/nohz: avoid showing '(null)' if nohz_full= not set
  sysfs/cpu: Use DEVICE_ATTR_RO for nohz_full attribute
  kernfs: fix memory leak of kernfs_iattrs in __kernfs_new_node
  fs/kernfs: raise sb->maxbytes to MAX_LFS_FILESIZE
  mod_devicetable: Bump auxiliary_device_id name size
  sysfs: simplify attribute definition macros
  samples/kobject: constify 'struct foo_attribute'
  samples/kobject: add is_visible() callback to attribute group
  sysfs: attribute_group: enable const variants of is_visible()
  sysfs: introduce __SYSFS_FUNCTION_ALTERNATIVE()
  sysfs: transparently handle const pointers in ATTRIBUTE_GROUPS()
  sysfs: attribute_group: allow registration of const attribute
  ...
Merge tag 'pwm/for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux 2025-12-04T19:04:38+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-04T19:04:38+00:00 77956cf36494cc5e5649b187f552b90fb14d0674 Pull pwm updates from Uwe Kleine-König: "In addition to the usual mix of core cleanups, driver changes, minor fixes and device tree updates the highlight this cycle is Rust support for the core and a first Rust driver both provided by Michal Wilczynski. Michal wrote about these changes on https://mwilczynski.dev/posts/bringing-rust-to-the-pwm-subsystem/ which is a nice read" * tag 'pwm/for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (22 commits) pwm: rzg2l-gpt: Allow checking period_tick cache value only if sibling channel is enabled pwm: bcm2835: Make sure the channel is enabled after pwm_request() pwm: mediatek: Make use of struct_size macro pwm: mediatek: Remove unneeded semicolon pwm: airoha: Add support for EN7581 SoC pwm: mediatek: Convert to waveform API pwm: max7360: Clean MAX7360 code pwm: Drop unused function pwm_apply_args() pwm: Use %u to printf unsigned int pwm_chip::npwm and pwm_chip::id pwm: Simplify printf to emit chip->npwm in $debugfs/pwm pwm: th1520: Use module_pwm_platform_driver! macro pwm: th1520: Fix clippy warning for redundant struct field init pwm: Fix Rust formatting dt-bindings: pwm: thead: Add T-HEAD TH1520 PWM controller pwm: Add Rust driver for T-HEAD TH1520 SoC rust: pwm: Fix broken intra-doc link rust: pwm: Drop wrapping of PWM polarity and state rust: pwm: Add module_pwm_platform_driver! macro rust: pwm: Add complete abstraction layer rust: pwm: Add Kconfig and basic data structures ... 
Pull pwm updates from Uwe Kleine-König:
 "In addition to the usual mix of core cleanups, driver changes, minor
  fixes and device tree updates the highlight this cycle is Rust support
  for the core and a first Rust driver both provided by Michal
  Wilczynski.

  Michal wrote about these changes on

    https://mwilczynski.dev/posts/bringing-rust-to-the-pwm-subsystem/

  which is a nice read"

* tag 'pwm/for-6.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (22 commits)
  pwm: rzg2l-gpt: Allow checking period_tick cache value only if sibling channel is enabled
  pwm: bcm2835: Make sure the channel is enabled after pwm_request()
  pwm: mediatek: Make use of struct_size macro
  pwm: mediatek: Remove unneeded semicolon
  pwm: airoha: Add support for EN7581 SoC
  pwm: mediatek: Convert to waveform API
  pwm: max7360: Clean MAX7360 code
  pwm: Drop unused function pwm_apply_args()
  pwm: Use %u to printf unsigned int pwm_chip::npwm and pwm_chip::id
  pwm: Simplify printf to emit chip->npwm in $debugfs/pwm
  pwm: th1520: Use module_pwm_platform_driver! macro
  pwm: th1520: Fix clippy warning for redundant struct field init
  pwm: Fix Rust formatting
  dt-bindings: pwm: thead: Add T-HEAD TH1520 PWM controller
  pwm: Add Rust driver for T-HEAD TH1520 SoC
  rust: pwm: Fix broken intra-doc link
  rust: pwm: Drop wrapping of PWM polarity and state
  rust: pwm: Add module_pwm_platform_driver! macro
  rust: pwm: Add complete abstraction layer
  rust: pwm: Add Kconfig and basic data structures
  ...
Merge tag 'drm-next-2025-12-03' of https://gitlab.freedesktop.org/drm/kernel 2025-12-04T16:53:30+00:00 Linus Torvalds torvalds@linux-foundation.org 2025-12-04T16:53:30+00:00 6dfafbd0299a60bfb5d5e277fdf100037c7ded07 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 ... 
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
  ...
rust: add num module and Integer trait 2025-11-17T21:56:23+00:00 Alexandre Courbot acourbot@nvidia.com 2025-11-08T02:23:47+00:00 90f3df4fdfb682e2394ee3f97dfe91a402d5c46a Introduce the `num` module, which will provide numerical extensions and utilities for the kernel. For now, introduce the `Integer` trait, which is implemented for all primitive integer types to provides their core properties to generic code. Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Link: https://patch.msgid.link/20251108-bounded_ints-v4-1-c9342ac7ebd1@nvidia.com Signed-off-by: Miguel Ojeda <ojeda@kernel.org> 
Introduce the `num` module, which will provide numerical extensions and
utilities for the kernel.

For now, introduce the `Integer` trait, which is implemented for all
primitive integer types to provides their core properties to generic
code.

Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://patch.msgid.link/20251108-bounded_ints-v4-1-c9342ac7ebd1@nvidia.com
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
rust: i2c: add basic I2C device and driver abstractions 2025-11-17T21:26:42+00:00 Igor Korotin igor.korotin.linux@gmail.com 2025-11-16T16:21:44+00:00 57c5bd9aee944b0f5c2ab314e10a86fae51f7bf2 Implement the core abstractions needed for I2C drivers, including: * `i2c::Driver` — the trait drivers must implement, including `probe` * `i2c::I2cClient` — a safe wrapper around `struct i2c_client` * `i2c::Adapter` — implements `driver::RegistrationOps` to hook into the generic `driver::Registration` machinery * `i2c::DeviceId` — a `RawDeviceIdIndex` implementation for I2C device IDs Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Igor Korotin <igor.korotin.linux@gmail.com> Link: https://patch.msgid.link/20251116162144.171469-1-igor.korotin.linux@gmail.com [ Remove unnecessary safety comment; fix rustdoc `Device` -> `I2cClient`. - Danilo ] Signed-off-by: Danilo Krummrich <dakr@kernel.org> 
Implement the core abstractions needed for I2C drivers, including:

* `i2c::Driver` — the trait drivers must implement, including `probe`

* `i2c::I2cClient` — a safe wrapper around `struct i2c_client`

* `i2c::Adapter` — implements `driver::RegistrationOps` to hook into the
  generic `driver::Registration` machinery

* `i2c::DeviceId` — a `RawDeviceIdIndex` implementation for I2C device IDs

Acked-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Igor Korotin <igor.korotin.linux@gmail.com>
Link: https://patch.msgid.link/20251116162144.171469-1-igor.korotin.linux@gmail.com
[ Remove unnecessary safety comment; fix rustdoc `Device` -> `I2cClient`.
  - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
rust: enable slice_flatten feature and provide it through an extension trait 2025-11-14T11:25:57+00:00 Alexandre Courbot acourbot@nvidia.com 2025-11-10T13:34:16+00:00 88622323dde3d9d6efd6f2efcfaa0bced5af94c3 In Rust 1.80, the previously unstable `slice::flatten` family of methods have been stabilized and renamed to `slice::as_flattened`. This creates an issue as we want to use `as_flattened`, but need to support the MSRV (which at the moment is Rust 1.78) where it is named `flatten`. Solve this by enabling the `slice_flatten` feature, and providing an `as_flattened` implementation through an extension trait for compiler versions where it is not available. The trait is then exported from the prelude, making the `as_flattened` family of methods transparently available for all supported compiler versions. This extension trait can be removed once the MSRV passes 1.80. Suggested-by: Miguel Ojeda <ojeda@kernel.org> Link: https://lore.kernel.org/all/CANiq72kK4pG=O35NwxPNoTO17oRcg1yfGcvr3==Fi4edr+sfmw@mail.gmail.com/ Acked-by: Danilo Krummrich <dakr@kernel.org> Acked-by: Miguel Ojeda <ojeda@kernel.org> Reviewed-by: Alice Ryhl <aliceryhl@google.com> Signed-off-by: Alexandre Courbot <acourbot@nvidia.com> Message-ID: <20251110-gsp_boot-v9-8-8ae4058e3c0e@nvidia.com> Message-ID: <20251104-b4-as-flattened-v3-1-6cb9c26b45cd@nvidia.com> 
In Rust 1.80, the previously unstable `slice::flatten` family of methods
have been stabilized and renamed to `slice::as_flattened`.

This creates an issue as we want to use `as_flattened`, but need to
support the MSRV (which at the moment is Rust 1.78) where it is named
`flatten`.

Solve this by enabling the `slice_flatten` feature, and providing an
`as_flattened` implementation through an extension trait for compiler
versions where it is not available.

The trait is then exported from the prelude, making the `as_flattened`
family of methods transparently available for all supported compiler
versions.

This extension trait can be removed once the MSRV passes 1.80.

Suggested-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/all/CANiq72kK4pG=O35NwxPNoTO17oRcg1yfGcvr3==Fi4edr+sfmw@mail.gmail.com/
Acked-by: Danilo Krummrich <dakr@kernel.org>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Message-ID: <20251110-gsp_boot-v9-8-8ae4058e3c0e@nvidia.com>
Message-ID: <20251104-b4-as-flattened-v3-1-6cb9c26b45cd@nvidia.com>
pwm: Fix Rust formatting 2025-11-13T09:21:01+00:00 Miguel Ojeda ojeda@kernel.org 2025-10-29T18:25:02+00:00 6fe9e919c144f1296d38e2abb10c7ac4320aa7fa We do our best to keep the repository `rustfmt`-clean [1], thus run the tool to fix the formatting issue. A trailing empty comment [2] is added in order to preserve the wanted style for imports (otherwise the tool will compact the first two items). Link: https://rust-for-linux.com/contributing#submit-checklist-addendum [1] Link: https://docs.kernel.org/rust/coding-guidelines.html#style-formatting [2] Fixes: d8046cd50879 ("rust: pwm: Add complete abstraction layer") Fixes: 7b3dce814a15 ("rust: pwm: Add Kconfig and basic data structures") Fixes: e03724aac758 ("pwm: Add Rust driver for T-HEAD TH1520 SoC") Signed-off-by: Miguel Ojeda <ojeda@kernel.org> Link: https://patch.msgid.link/20251029182502.783392-1-ojeda@kernel.org Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org> 
We do our best to keep the repository `rustfmt`-clean [1], thus run the
tool to fix the formatting issue.

A trailing empty comment [2] is added in order to preserve the wanted
style for imports (otherwise the tool will compact the first two items).

Link: https://rust-for-linux.com/contributing#submit-checklist-addendum [1]
Link: https://docs.kernel.org/rust/coding-guidelines.html#style-formatting [2]
Fixes: d8046cd50879 ("rust: pwm: Add complete abstraction layer")
Fixes: 7b3dce814a15 ("rust: pwm: Add Kconfig and basic data structures")
Fixes: e03724aac758 ("pwm: Add Rust driver for T-HEAD TH1520 SoC")
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patch.msgid.link/20251029182502.783392-1-ojeda@kernel.org
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
rust: pwm: Add Kconfig and basic data structures 2025-11-07T09:03:54+00:00 Michal Wilczynski m.wilczynski@samsung.com 2025-10-16T13:38:02+00:00 7b3dce814a15bc5d9fb6124cd945291012c4ebb9 Introduce the foundational support for PWM abstractions in Rust. This commit adds the `RUST_PWM_ABSTRACTIONS` Kconfig option to enable the feature, along with the necessary build-system support and C helpers. It also introduces the first set of safe wrappers for the PWM subsystem, covering the basic data carrying C structs and enums: - `Polarity`: A safe wrapper for `enum pwm_polarity`. - `Waveform`: A wrapper for `struct pwm_waveform`. - `State`: A wrapper for `struct pwm_state`. These types provide memory safe, idiomatic Rust representations of the core PWM data structures and form the building blocks for the abstractions that will follow. Tested-by: Drew Fustini <fustini@kernel.org> Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com> Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev> Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com> Link: https://patch.msgid.link/20251016-rust-next-pwm-working-fan-for-sending-v16-2-a5df2405d2bd@samsung.com Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org> 
Introduce the foundational support for PWM abstractions in Rust.

This commit adds the `RUST_PWM_ABSTRACTIONS` Kconfig option to enable
the feature, along with the necessary build-system support and C
helpers.

It also introduces the first set of safe wrappers for the PWM
subsystem, covering the basic data carrying C structs and enums:
- `Polarity`: A safe wrapper for `enum pwm_polarity`.
- `Waveform`: A wrapper for `struct pwm_waveform`.
- `State`: A wrapper for `struct pwm_state`.

These types provide memory safe, idiomatic Rust representations of the
core PWM data structures and form the building blocks for the
abstractions that will follow.

Tested-by: Drew Fustini <fustini@kernel.org>
Reviewed-by: Daniel Almeida <daniel.almeida@collabora.com>
Reviewed-by: Elle Rhumsaa <elle@weathered-steel.dev>
Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
Link: https://patch.msgid.link/20251016-rust-next-pwm-working-fan-for-sending-v16-2-a5df2405d2bd@samsung.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>