GPU Driver Developer’s Guide

• Introduction
  • Style Guidelines
    • Documentation Requirements for kAPI
  • Getting Started
  • Contribution Process
    • Feature Merge Deadlines
    • Code of Conduct
  • Simple DRM drivers to use as examples
  • External References
    • Conference talks
    • Slides and articles
• DRM Internals
  • Driver Initialization
    • Driver Information
      • Major, Minor and Patchlevel
      • Name and Description
    • Module Initialization
    • Device Instance and Driver Handling
      • Display driver example
      • drm_wedge_task_info
      • switch_power_state
      • drm_device
      • drm_dev_dma_dev()
      • drm_driver_feature
      • drm_driver
      • devm_drm_dev_alloc
      • drm_dev_is_unplugged()
      • drm_core_check_all_features()
      • drm_core_check_feature()
      • drm_drv_uses_atomic_modeset()
      • drm_put_dev()
      • drm_dev_enter()
      • drm_dev_exit()
      • drm_dev_unplug()
      • drm_dev_set_dma_dev()
      • drm_dev_wedged_event()
      • __drm_dev_alloc()
      • drm_dev_alloc()
      • drm_dev_get()
      • drm_dev_put()
      • drmm_cgroup_register_region()
      • drm_dev_register()
      • drm_dev_unregister()
    • Driver Load
      • Component Helper Usage
      • Memory Manager Initialization
      • Miscellaneous Device Configuration
    • Managed Resources
      • drmm_release_action()
      • drmm_kmalloc()
      • drmm_kstrdup()
      • drmm_kfree()
      • drmm_add_action
      • drmm_add_action_or_reset
      • drmm_kzalloc()
      • drmm_kmalloc_array()
      • drmm_kcalloc()
      • drmm_mutex_init
      • drmm_alloc_ordered_workqueue
  • Open/Close, File Operations and IOCTLs
    • File Operations
      • drm_minor
      • drm_pending_event
      • drm_file
      • drm_is_primary_client()
      • drm_is_render_client()
      • drm_is_accel_client()
      • drm_memory_stats
      • drm_open()
      • drm_release()
      • drm_release_noglobal()
      • drm_read()
      • drm_poll()
      • drm_event_reserve_init_locked()
      • drm_event_reserve_init()
      • drm_event_cancel_free()
      • drm_send_event_timestamp_locked()
      • drm_send_event_locked()
      • drm_send_event()
      • drm_print_memory_stats()
      • drm_show_memory_stats()
      • drm_show_fdinfo()
      • drm_file_err()
  • Misc Utilities
    • Printer
      • drm_debug_category
      • drm_printer
      • drm_vprintf()
      • drm_printf_indent
      • drm_print_iterator
      • drm_coredump_printer()
      • drm_coredump_printer_is_full()
      • drm_seq_file_printer()
      • drm_info_printer()
      • drm_dbg_printer()
      • drm_err_printer()
      • drm_line_printer()
      • DRM_DEV_ERROR
      • DRM_DEV_ERROR_RATELIMITED
      • DRM_DEV_DEBUG
      • DRM_DEV_DEBUG_DRIVER
      • DRM_DEV_DEBUG_KMS
      • drm_puts()
      • drm_printf()
      • drm_print_bits()
      • drm_print_regset32()
      • drm_print_hex_dump()
    • Utilities
      • drm_can_sleep()
  • Unit testing
    • KUnit
      • How to run the tests?
      • KUnit Coverage Rules
  • Legacy Support Code
    • Legacy Suspend/Resume
    • Legacy DMA Services
• DRM Memory Management
  • The Translation Table Manager (TTM)
    • ttm_caching
    • TTM device object reference
      • ttm_global
      • ttm_device
      • ttm_device_prepare_hibernation()
      • ttm_device_init()
    • TTM resource placement reference
      • ttm_place
      • ttm_placement
    • TTM resource object reference
      • TTM_NUM_MOVE_FENCES
      • ttm_lru_item_type
      • ttm_lru_item
      • ttm_lru_item_init()
      • ttm_resource_manager
      • ttm_bus_placement
      • ttm_resource
      • ttm_lru_item_to_res()
      • ttm_lru_bulk_move_pos
      • ttm_lru_bulk_move
      • ttm_resource_cursor
      • ttm_kmap_iter_iomap
      • ttm_kmap_iter_linear_io
      • ttm_resource_manager_set_used()
      • ttm_resource_manager_used()
      • ttm_resource_manager_cleanup()
      • ttm_resource_manager_for_each_res
      • ttm_lru_bulk_move_init()
      • ttm_lru_bulk_move_fini()
      • ttm_lru_bulk_move_tail()
      • ttm_resource_init()
      • ttm_resource_fini()
      • ttm_resource_manager_init()
      • ttm_resource_manager_usage()
      • ttm_resource_manager_debug()
      • ttm_kmap_iter_iomap_init()
      • ttm_resource_manager_create_debugfs()
    • TTM TT object reference
      • ttm_tt
      • ttm_kmap_iter_tt
      • ttm_tt_is_swapped()
      • ttm_tt_is_backed_up()
      • ttm_tt_clear_backed_up()
      • ttm_tt_create()
      • ttm_tt_init()
      • ttm_tt_fini()
      • ttm_tt_destroy()
      • ttm_tt_swapin()
      • ttm_tt_populate()
      • ttm_tt_unpopulate()
      • ttm_tt_mark_for_clear()
      • ttm_backup_flags
      • ttm_agp_tt_create()
      • ttm_kmap_iter_tt_init()
      • ttm_tt_setup_backup()
    • TTM page pool reference
      • ttm_pool_type
      • ttm_pool
      • ttm_pool_alloc()
      • ttm_pool_free()
      • ttm_pool_init()
      • ttm_pool_fini()
      • ttm_pool_debugfs()
  • The Graphics Execution Manager (GEM)
    • GEM Initialization
    • GEM Objects Creation
    • GEM Objects Lifetime
    • GEM Objects Naming
    • GEM Objects Mapping
    • Memory Coherency
    • Command Execution
    • GEM Function Reference
      • drm_gem_object_status
      • drm_gem_object_funcs
      • drm_gem_lru
      • drm_gem_object
      • DRM_GEM_FOPS
      • DEFINE_DRM_GEM_FOPS
      • drm_gem_get_huge_mnt()
      • drm_gem_object_get()
      • drm_gem_object_put()
      • drm_gem_object_is_shared_for_memory_stats()
      • drm_gem_is_imported()
      • drm_gem_gpuva_init()
      • drm_gem_for_each_gpuvm_bo
      • drm_gem_for_each_gpuvm_bo_safe
      • drm_gem_huge_mnt_create()
      • drm_gem_object_init()
      • drm_gem_private_object_init()
      • drm_gem_private_object_fini()
      • drm_gem_handle_delete()
      • drm_gem_dumb_map_offset()
      • drm_gem_handle_create()
      • drm_gem_free_mmap_offset()
      • drm_gem_create_mmap_offset_size()
      • drm_gem_create_mmap_offset()
      • drm_gem_get_pages()
      • drm_gem_put_pages()
      • drm_gem_objects_lookup()
      • drm_gem_object_lookup()
      • drm_gem_dma_resv_wait()
      • drm_gem_object_release()
      • drm_gem_object_free()
      • drm_gem_vm_open()
      • drm_gem_vm_close()
      • drm_gem_mmap_obj()
      • drm_gem_get_unmapped_area()
      • drm_gem_mmap()
      • drm_gem_lock_reservations()
      • drm_gem_lru_init()
      • drm_gem_lru_remove()
      • drm_gem_lru_move_tail_locked()
      • drm_gem_lru_move_tail()
      • drm_gem_lru_scan()
      • drm_gem_evict_locked()
    • GEM DMA Helper Functions Reference
      • drm_gem_dma_object
      • drm_gem_dma_object_free()
      • drm_gem_dma_object_print_info()
      • drm_gem_dma_object_get_sg_table()
      • drm_gem_dma_object_mmap()
      • DRM_GEM_DMA_DRIVER_OPS_WITH_DUMB_CREATE
      • DRM_GEM_DMA_DRIVER_OPS
      • DRM_GEM_DMA_DRIVER_OPS_VMAP_WITH_DUMB_CREATE
      • DRM_GEM_DMA_DRIVER_OPS_VMAP
      • DEFINE_DRM_GEM_DMA_FOPS
      • drm_gem_dma_create()
      • drm_gem_dma_free()
      • drm_gem_dma_dumb_create_internal()
      • drm_gem_dma_dumb_create()
      • drm_gem_dma_get_unmapped_area()
      • drm_gem_dma_print_info()
      • drm_gem_dma_get_sg_table()
      • drm_gem_dma_prime_import_sg_table()
      • drm_gem_dma_vmap()
      • drm_gem_dma_mmap()
      • drm_gem_dma_prime_import_sg_table_vmap()
    • GEM SHMEM Helper Function Reference
      • drm_gem_shmem_object
      • drm_gem_shmem_object_free()
      • drm_gem_shmem_object_print_info()
      • drm_gem_shmem_object_pin()
      • drm_gem_shmem_object_unpin()
      • drm_gem_shmem_object_get_sg_table()
      • drm_gem_shmem_object_mmap()
      • DRM_GEM_SHMEM_DRIVER_OPS
      • drm_gem_shmem_init()
      • drm_gem_shmem_create()
      • drm_gem_shmem_release()
      • drm_gem_shmem_free()
      • drm_gem_shmem_pin()
      • drm_gem_shmem_unpin()
      • drm_gem_shmem_dumb_create()
      • drm_gem_shmem_mmap()
      • drm_gem_shmem_print_info()
      • drm_gem_shmem_get_sg_table()
      • drm_gem_shmem_get_pages_sgt()
      • drm_gem_shmem_prime_import_sg_table()
      • drm_gem_shmem_prime_import_no_map()
    • GEM VRAM Helper Functions Reference
      • drm_gem_vram_object
      • drm_gem_vram_of_bo()
      • drm_gem_vram_of_gem()
      • DRM_GEM_VRAM_PLANE_HELPER_FUNCS
      • DRM_GEM_VRAM_DRIVER
      • drm_vram_mm
      • drm_vram_mm_of_bdev()
      • drm_gem_vram_create()
      • drm_gem_vram_put()
      • drm_gem_vram_offset()
      • drm_gem_vram_vmap()
      • drm_gem_vram_vunmap()
      • drm_gem_vram_fill_create_dumb()
      • drm_gem_vram_driver_dumb_create()
      • drm_gem_vram_plane_helper_prepare_fb()
      • drm_gem_vram_plane_helper_cleanup_fb()
      • drm_vram_mm_debugfs_init()
      • drmm_vram_helper_init()
      • drm_vram_helper_mode_valid()
    • GEM TTM Helper Functions Reference
      • drm_gem_ttm_print_info()
      • drm_gem_ttm_vmap()
      • drm_gem_ttm_vunmap()
      • drm_gem_ttm_mmap()
      • drm_gem_ttm_dumb_map_offset()
  • VMA Offset Manager
    • drm_vma_offset_exact_lookup_locked()
    • drm_vma_offset_lock_lookup()
    • drm_vma_offset_unlock_lookup()
    • drm_vma_node_reset()
    • drm_vma_node_start()
    • drm_vma_node_size()
    • drm_vma_node_offset_addr()
    • drm_vma_node_unmap()
    • drm_vma_node_verify_access()
    • drm_vma_offset_manager_init()
    • drm_vma_offset_manager_destroy()
    • drm_vma_offset_lookup_locked()
    • drm_vma_offset_add()
    • drm_vma_offset_remove()
    • drm_vma_node_allow()
    • drm_vma_node_allow_once()
    • drm_vma_node_revoke()
    • drm_vma_node_is_allowed()
  • PRIME Buffer Sharing
    • Overview and Lifetime Rules
      • Reference Counting for GEM Drivers
    • PRIME Helper Functions
      • Exporting buffers
      • Importing buffers
    • PRIME Function References
      • drm_prime_file_private
      • drm_gem_dmabuf_export()
      • drm_gem_dmabuf_release()
      • drm_gem_prime_fd_to_handle()
      • drm_gem_prime_handle_to_dmabuf()
      • drm_gem_prime_handle_to_fd()
      • drm_gem_map_attach()
      • drm_gem_map_detach()
      • drm_gem_map_dma_buf()
      • drm_gem_unmap_dma_buf()
      • drm_gem_dmabuf_vmap()
      • drm_gem_dmabuf_vunmap()
      • drm_gem_prime_mmap()
      • drm_gem_dmabuf_mmap()
      • drm_prime_pages_to_sg()
      • drm_prime_get_contiguous_size()
      • drm_gem_prime_export()
      • drm_gem_is_prime_exported_dma_buf()
      • drm_gem_prime_import_dev()
      • drm_gem_prime_import()
      • drm_prime_sg_to_page_array()
      • drm_prime_sg_to_dma_addr_array()
      • drm_prime_gem_destroy()
  • DRM MM Range Allocator
    • Overview
    • LRU Scan/Eviction Support
    • DRM MM Range Allocator Function References
      • drm_mm_insert_mode
      • drm_mm_node
      • drm_mm
      • drm_mm_scan
      • drm_mm_node_allocated()
      • drm_mm_initialized()
      • drm_mm_hole_follows()
      • drm_mm_hole_node_start()
      • drm_mm_hole_node_end()
      • drm_mm_nodes
      • drm_mm_for_each_node
      • drm_mm_for_each_node_safe
      • drm_mm_for_each_hole
      • drm_mm_insert_node_generic()
      • drm_mm_insert_node()
      • drm_mm_clean()
      • drm_mm_for_each_node_in_range
      • drm_mm_scan_init()
      • drm_mm_reserve_node()
      • drm_mm_insert_node_in_range()
      • drm_mm_remove_node()
      • drm_mm_scan_init_with_range()
      • drm_mm_scan_add_block()
      • drm_mm_scan_remove_block()
      • drm_mm_scan_color_evict()
      • drm_mm_init()
      • drm_mm_takedown()
      • drm_mm_print()
  • DRM GPUVM
    • Overview
    • Split and Merge
    • Locking
    • Examples
    • DRM GPUVM Function References
      • drm_gpuva_flags
      • drm_gpuva
      • drm_gpuva_invalidate()
      • drm_gpuva_invalidated()
      • drm_gpuvm_flags
      • drm_gpuvm
      • drm_gpuvm_get()
      • drm_gpuvm_resv_protected()
      • drm_gpuvm_immediate_mode()
      • drm_gpuvm_resv
      • drm_gpuvm_resv_obj
      • drm_gpuvm_is_extobj()
      • drm_gpuvm_for_each_va_range
      • drm_gpuvm_for_each_va_range_safe
      • drm_gpuvm_for_each_va
      • drm_gpuvm_for_each_va_safe
      • drm_gpuvm_exec
      • drm_gpuvm_exec_unlock()
      • drm_gpuvm_exec_resv_add_fence()
      • drm_gpuvm_exec_validate()
      • drm_gpuvm_bo
      • drm_gpuvm_bo_get()
      • drm_gpuvm_bo_gem_evict()
      • drm_gpuvm_bo_for_each_va
      • drm_gpuvm_bo_for_each_va_safe
      • drm_gpuva_op_type
      • drm_gpuva_op_map
      • drm_gpuva_op_unmap
      • drm_gpuva_op_remap
      • drm_gpuva_op_prefetch
      • drm_gpuva_op
      • drm_gpuva_ops
      • drm_gpuva_for_each_op
      • drm_gpuva_for_each_op_safe
      • drm_gpuva_for_each_op_from_reverse
      • drm_gpuva_for_each_op_reverse
      • drm_gpuva_first_op
      • drm_gpuva_last_op
      • drm_gpuva_prev_op
      • drm_gpuva_next_op
      • drm_gpuvm_map_req
      • drm_gpuvm_ops
      • drm_gpuva_op_remap_to_unmap_range()
      • drm_gpuvm_range_valid()
      • drm_gpuvm_resv_object_alloc()
      • drm_gpuvm_init()
      • drm_gpuvm_put()
      • drm_gpuvm_prepare_vm()
      • drm_gpuvm_prepare_objects()
      • drm_gpuvm_prepare_range()
      • drm_gpuvm_exec_lock()
      • drm_gpuvm_exec_lock_array()
      • drm_gpuvm_exec_lock_range()
      • drm_gpuvm_validate()
      • drm_gpuvm_resv_add_fence()
      • drm_gpuvm_bo_create()
      • drm_gpuvm_bo_put()
      • drm_gpuvm_bo_put_deferred()
      • drm_gpuvm_bo_deferred_cleanup()
      • drm_gpuvm_bo_find()
      • drm_gpuvm_bo_obtain_locked()
      • drm_gpuvm_bo_obtain_prealloc()
      • drm_gpuvm_bo_extobj_add()
      • drm_gpuvm_bo_evict()
      • drm_gpuva_insert()
      • drm_gpuva_remove()
      • drm_gpuva_link()
      • drm_gpuva_unlink()
      • drm_gpuva_unlink_defer()
      • drm_gpuva_find_first()
      • drm_gpuva_find()
      • drm_gpuva_find_prev()
      • drm_gpuva_find_next()
      • drm_gpuvm_interval_empty()
      • drm_gpuva_map()
      • drm_gpuva_remap()
      • drm_gpuva_unmap()
      • drm_gpuvm_sm_map()
      • drm_gpuvm_sm_unmap()
      • drm_gpuvm_sm_map_exec_lock()
      • drm_gpuvm_sm_unmap_exec_lock()
      • drm_gpuvm_sm_map_ops_create()
      • drm_gpuvm_madvise_ops_create()
      • drm_gpuvm_sm_unmap_ops_create()
      • drm_gpuvm_prefetch_ops_create()
      • drm_gpuvm_bo_unmap_ops_create()
      • drm_gpuva_ops_free()
  • DRM Buddy Allocator
    • DRM Buddy Function References
      • drm_buddy_init()
      • drm_buddy_fini()
      • drm_get_buddy()
      • drm_buddy_reset_clear()
      • drm_buddy_free_block()
      • drm_buddy_free_list()
      • drm_buddy_block_trim()
      • drm_buddy_alloc_blocks()
      • drm_buddy_block_print()
      • drm_buddy_print()
  • DRM Cache Handling and Fast WC memcpy()
    • drm_clflush_pages()
    • drm_clflush_sg()
    • drm_clflush_virt_range()
    • drm_memcpy_from_wc()
  • DRM Sync Objects
    • Host-side wait on syncobjs
    • Import/export of syncobjs
    • Import/export of timeline points in timeline syncobjs
    • drm_syncobj
    • drm_syncobj_get()
    • drm_syncobj_put()
    • drm_syncobj_fence_get()
    • drm_syncobj_find()
    • drm_syncobj_add_point()
    • drm_syncobj_replace_fence()
    • drm_syncobj_find_fence()
    • drm_syncobj_free()
    • drm_syncobj_create()
    • drm_syncobj_get_handle()
    • drm_syncobj_get_fd()
    • drm_timeout_abs_to_jiffies()
  • DRM Execution context
    • drm_exec
    • drm_exec_obj()
    • drm_exec_for_each_locked_object
    • drm_exec_for_each_locked_object_reverse
    • drm_exec_until_all_locked
    • drm_exec_retry_on_contention
    • drm_exec_is_contended()
    • drm_exec_init()
    • drm_exec_fini()
    • drm_exec_cleanup()
    • drm_exec_lock_obj()
    • drm_exec_unlock_obj()
    • drm_exec_prepare_obj()
    • drm_exec_prepare_array()
  • GPU Scheduler
    • Overview
    • Flow Control
    • Scheduler Function References
      • DRM_SCHED_FENCE_DONT_PIPELINE
      • DRM_SCHED_FENCE_FLAG_HAS_DEADLINE_BIT
      • drm_sched_entity
      • drm_sched_rq
      • drm_sched_fence
      • drm_sched_job
      • drm_gpu_sched_stat
      • drm_sched_backend_ops
      • drm_gpu_scheduler
      • drm_sched_init_args
      • drm_sched_pending_job_iter
      • drm_sched_for_each_pending_job
      • drm_sched_tdr_queue_imm()
      • drm_sched_fault()
      • drm_sched_suspend_timeout()
      • drm_sched_resume_timeout()
      • drm_sched_stop()
      • drm_sched_start()
      • drm_sched_resubmit_jobs()
      • drm_sched_job_init()
      • drm_sched_job_arm()
      • drm_sched_job_add_dependency()
      • drm_sched_job_add_syncobj_dependency()
      • drm_sched_job_add_resv_dependencies()
      • drm_sched_job_add_implicit_dependencies()
      • drm_sched_job_has_dependency()
      • drm_sched_job_cleanup()
      • drm_sched_pick_best()
      • drm_sched_init()
      • drm_sched_fini()
      • drm_sched_increase_karma()
      • drm_sched_wqueue_ready()
      • drm_sched_wqueue_stop()
      • drm_sched_wqueue_start()
      • drm_sched_is_stopped()
      • drm_sched_job_is_signaled()
      • drm_sched_entity_init()
      • drm_sched_entity_modify_sched()
      • drm_sched_entity_error()
      • drm_sched_entity_flush()
      • drm_sched_entity_fini()
      • drm_sched_entity_destroy()
      • drm_sched_entity_set_priority()
      • drm_sched_entity_push_job()
• Kernel Mode Setting (KMS)
  • Overview
  • KMS Core Structures and Functions
    • drm_mode_config_funcs
    • drm_mode_config
    • drm_mode_config_init()
    • drm_mode_config_reset()
    • drmm_mode_config_init()
    • drm_mode_config_cleanup()
  • Modeset Base Object Abstraction
    • drm_mode_object
    • drm_object_properties
    • drm_mode_object_find()
    • drm_mode_object_put()
    • drm_mode_object_get()
    • drm_object_attach_property()
    • drm_object_property_set_value()
    • drm_object_property_get_value()
    • drm_object_property_get_default_value()
    • drm_object_immutable_property_get_value()
  • Atomic Mode Setting
    • Handling Driver Private State
    • Atomic Mode Setting Function Reference
      • drm_crtc_commit
      • drm_private_state_funcs
      • drm_private_obj
      • drm_for_each_privobj
      • drm_private_state
      • drm_atomic_state
      • drm_crtc_commit_get()
      • drm_crtc_commit_put()
      • drm_atomic_state_get()
      • drm_atomic_state_put()
      • drm_atomic_get_old_crtc_state()
      • drm_atomic_get_new_crtc_state()
      • drm_atomic_get_old_plane_state()
      • drm_atomic_get_new_plane_state()
      • drm_atomic_get_old_connector_state()
      • drm_atomic_get_new_connector_state()
      • __drm_atomic_get_current_plane_state()
      • for_each_oldnew_connector_in_state
      • for_each_old_connector_in_state
      • for_each_new_connector_in_state
      • for_each_oldnew_crtc_in_state
      • for_each_old_crtc_in_state
      • for_each_new_crtc_in_state
      • for_each_oldnew_colorop_in_state
      • for_each_new_colorop_in_state
      • for_each_oldnew_plane_in_state
      • for_each_oldnew_plane_in_state_reverse
      • for_each_new_plane_in_state_reverse
      • for_each_old_plane_in_state
      • for_each_new_plane_in_state
      • for_each_oldnew_private_obj_in_state
      • for_each_old_private_obj_in_state
      • for_each_new_private_obj_in_state
      • drm_atomic_crtc_needs_modeset()
      • drm_atomic_crtc_effectively_active()
      • drm_bus_cfg
      • drm_bridge_state
      • drm_crtc_commit_wait()
      • drm_atomic_state_default_release()
      • drm_atomic_state_init()
      • drm_atomic_state_alloc()
      • drm_atomic_state_default_clear()
      • drm_atomic_state_clear()
      • __drm_atomic_state_free()
      • drm_atomic_get_crtc_state()
      • drm_atomic_get_plane_state()
      • drm_atomic_get_colorop_state()
      • drm_atomic_get_old_colorop_state()
      • drm_atomic_get_new_colorop_state()
      • drm_atomic_private_obj_init()
      • drm_atomic_private_obj_fini()
      • drm_atomic_get_private_obj_state()
      • drm_atomic_get_old_private_obj_state()
      • drm_atomic_get_new_private_obj_state()
      • drm_atomic_get_old_connector_for_encoder()
      • drm_atomic_get_new_connector_for_encoder()
      • drm_atomic_get_connector_for_encoder()
      • drm_atomic_get_old_crtc_for_encoder()
      • drm_atomic_get_new_crtc_for_encoder()
      • drm_atomic_get_connector_state()
      • drm_atomic_get_bridge_state()
      • drm_atomic_get_old_bridge_state()
      • drm_atomic_get_new_bridge_state()
      • drm_atomic_add_encoder_bridges()
      • drm_atomic_add_affected_connectors()
      • drm_atomic_add_affected_planes()
      • drm_atomic_add_affected_colorops()
      • drm_atomic_check_only()
      • drm_atomic_commit()
      • drm_atomic_nonblocking_commit()
      • drm_atomic_print_new_state()
      • drm_state_dump()
    • Atomic Mode Setting IOCTL and UAPI Functions
      • drm_atomic_set_mode_for_crtc()
      • drm_atomic_set_mode_prop_for_crtc()
      • drm_atomic_set_crtc_for_plane()
      • drm_atomic_set_fb_for_plane()
      • drm_atomic_set_colorop_for_plane()
      • drm_atomic_set_crtc_for_connector()
  • CRTC Abstraction
    • CRTC Functions Reference
      • drm_crtc_state
      • drm_crtc_funcs
      • drm_crtc
      • drm_mode_set
      • drmm_crtc_alloc_with_planes
      • drm_crtc_index()
      • drm_crtc_mask()
      • drm_crtc_find()
      • drm_for_each_crtc
      • drm_for_each_crtc_reverse
      • drm_crtc_from_index()
      • drm_crtc_init_with_planes()
      • drmm_crtc_init_with_planes()
      • drm_crtc_cleanup()
      • drm_mode_set_config_internal()
      • drm_crtc_check_viewport()
      • drm_crtc_create_scaling_filter_property()
      • drm_crtc_in_clone_mode()
    • Color Management Functions Reference
      • drm_color_ctm_s31_32_to_qm_n()
      • drm_crtc_enable_color_mgmt()
      • drm_mode_crtc_set_gamma_size()
      • drm_plane_create_color_properties()
      • drm_color_lut_check()
      • drm_crtc_load_gamma_888()
      • drm_crtc_load_gamma_565_from_888()
      • drm_crtc_load_gamma_555_from_888()
      • drm_crtc_fill_gamma_888()
      • drm_crtc_fill_gamma_565()
      • drm_crtc_fill_gamma_555()
      • drm_crtc_load_palette_8()
      • drm_crtc_fill_palette_332()
      • drm_crtc_fill_palette_8()
      • drm_color_lut32_check()
      • drm_color_lut_extract()
      • drm_color_lut32_extract()
      • drm_color_lut_size()
      • drm_color_lut32_size()
      • drm_color_lut_tests
  • Frame Buffer Abstraction
    • Frame Buffer Functions Reference
      • drm_framebuffer_funcs
      • drm_framebuffer
      • drm_framebuffer_get()
      • drm_framebuffer_put()
      • drm_framebuffer_read_refcount()
      • drm_framebuffer_assign()
      • drm_afbc_framebuffer
      • drm_framebuffer_init()
      • drm_framebuffer_lookup()
      • drm_framebuffer_unregister_private()
      • drm_framebuffer_cleanup()
      • drm_framebuffer_remove()
  • DRM Format Handling
    • Format Modifiers
    • Open Source User Waiver
    • Format Functions Reference
      • DRM_FORMAT_MAX_PLANES
      • drm_format_info
      • drm_format_info_is_yuv_packed()
      • drm_format_info_is_yuv_semiplanar()
      • drm_format_info_is_yuv_planar()
      • drm_format_info_is_yuv_sampling_410()
      • drm_format_info_is_yuv_sampling_411()
      • drm_format_info_is_yuv_sampling_420()
      • drm_format_info_is_yuv_sampling_422()
      • drm_format_info_is_yuv_sampling_444()
      • drm_format_info_plane_width()
      • drm_format_info_plane_height()
      • drm_mode_legacy_fb_format()
      • drm_driver_legacy_fb_format()
      • drm_driver_color_mode_format()
      • drm_get_format_info()
      • drm_format_info_block_width()
      • drm_format_info_block_height()
      • drm_format_info_bpp()
      • drm_format_info_min_pitch()
  • Dumb Buffer Objects
  • Plane Abstraction
    • Plane Functions Reference
      • drm_plane_state
      • drm_plane_funcs
      • drm_plane_type
      • drm_plane
      • drmm_universal_plane_alloc
      • drm_universal_plane_alloc
      • drm_plane_index()
      • drm_plane_mask()
      • drm_plane_find()
      • drm_for_each_plane_mask
      • drm_for_each_legacy_plane
      • drm_for_each_plane
      • drm_universal_plane_init()
      • drm_plane_cleanup()
      • drm_plane_from_index()
      • drm_plane_force_disable()
      • drm_mode_plane_set_obj_prop()
      • drm_plane_has_format()
      • drm_any_plane_has_format()
      • drm_plane_enable_fb_damage_clips()
      • drm_plane_get_damage_clips_count()
      • drm_plane_get_damage_clips()
      • drm_plane_create_scaling_filter_property()
      • drm_plane_add_size_hints_property()
      • drm_plane_create_color_pipeline_property()
    • Plane Composition Functions Reference
      • drm_plane_create_alpha_property()
      • drm_plane_create_rotation_property()
      • drm_rotation_simplify()
      • drm_plane_create_zpos_property()
      • drm_plane_create_zpos_immutable_property()
      • drm_atomic_normalize_zpos()
      • drm_plane_create_blend_mode_property()
    • Plane Damage Tracking Functions Reference
      • drm_atomic_helper_check_plane_damage()
      • drm_atomic_helper_dirtyfb()
      • drm_atomic_helper_damage_iter_init()
      • drm_atomic_helper_damage_iter_next()
      • drm_atomic_helper_damage_merged()
      • drm_atomic_for_each_plane_damage
      • drm_atomic_helper_damage_iter
    • Plane Panic Feature
    • Plane Panic Functions Reference
      • drm_scanout_buffer
      • drm_panic_trylock
      • drm_panic_lock
      • drm_panic_unlock
      • drm_panic_is_enabled()
  • Colorop Abstraction
    • Colorop Functions Reference
      • drm_colorop_curve_1d_type
      • drm_colorop_state
      • drm_colorop
      • drm_colorop_find()
      • drm_colorop_reset()
      • drm_colorop_index()
      • drm_get_colorop_type_name()
      • drm_get_colorop_curve_1d_type_name()
      • drm_colorop_cleanup()
      • drm_colorop_pipeline_destroy()
      • drm_plane_colorop_curve_1d_init()
      • drm_plane_colorop_curve_1d_lut_init()
      • drm_plane_colorop_mult_init()
      • drm_colorop_set_next_property()
  • Display Modes Function Reference
    • drm_mode_status
    • DRM_MODE_RES_MM
    • DRM_MODE_INIT
    • DRM_SIMPLE_MODE
    • drm_display_mode
    • DRM_MODE_FMT
    • DRM_MODE_ARG
    • drm_mode_is_stereo()
    • drm_mode_debug_printmodeline()
    • drm_mode_create()
    • drm_mode_destroy()
    • drm_mode_probed_add()
    • drm_analog_tv_mode()
    • drm_cvt_mode()
    • drm_gtf_mode_complex()
    • drm_gtf_mode()
    • drm_display_mode_from_videomode()
    • drm_display_mode_to_videomode()
    • drm_bus_flags_from_videomode()
    • of_get_drm_display_mode()
    • of_get_drm_panel_display_mode()
    • drm_mode_set_name()
    • drm_mode_vrefresh()
    • drm_mode_get_hv_timing()
    • drm_mode_set_crtcinfo()
    • drm_mode_copy()
    • drm_mode_init()
    • drm_mode_duplicate()
    • drm_mode_match()
    • drm_mode_equal()
    • drm_mode_equal_no_clocks()
    • drm_mode_equal_no_clocks_no_stereo()
    • drm_mode_validate_driver()
    • drm_mode_validate_size()
    • drm_mode_validate_ycbcr420()
    • drm_mode_prune_invalid()
    • drm_mode_sort()
    • drm_connector_list_update()
    • drm_mode_parse_command_line_for_connector()
    • drm_mode_create_from_cmdline_mode()
    • drm_mode_is_420_only()
    • drm_mode_is_420_also()
    • drm_mode_is_420()
    • drm_set_preferred_mode()
  • Connector Abstraction
    • Connector Functions Reference
      • drm_connector_status
      • drm_connector_registration_state
      • drm_connector_tv_mode
      • drm_scrambling
      • drm_hdmi_dsc_cap
      • drm_hdmi_info
      • drm_link_status
      • drm_panel_orientation
      • drm_hdmi_broadcast_rgb
      • drm_monitor_range_info
      • drm_luminance_range_info
      • drm_privacy_screen_status
      • drm_colorspace
      • drm_bus_flags
      • drm_display_info
      • drm_connector_tv_margins
      • drm_tv_connector_state
      • drm_connector_hdmi_infoframe
      • drm_connector_state
      • drm_connector_cec_funcs
      • drm_connector_infoframe_funcs
      • drm_connector_hdmi_funcs
      • drm_connector_funcs
      • drm_cmdline_mode
      • drm_connector_hdmi_audio
      • drm_connector_cec
      • drm_connector
      • drm_connector_lookup()
      • drm_connector_get()
      • drm_connector_put()
      • drm_connector_is_unregistered()
      • drm_tile_group
      • drm_connector_list_iter
      • drm_for_each_connector_iter
      • drm_connector_for_each_possible_encoder
      • drm_get_connector_type_name()
      • drm_connector_init()
      • drm_connector_dynamic_init()
      • drm_connector_init_with_ddc()
      • drmm_connector_init()
      • drmm_connector_hdmi_init()
      • drm_connector_attach_edid_property()
      • drm_connector_attach_encoder()
      • drm_connector_has_possible_encoder()
      • drm_connector_cec_phys_addr_invalidate()
      • drm_connector_cec_phys_addr_set()
      • drm_connector_cleanup()
      • drm_connector_register()
      • drm_connector_dynamic_register()
      • drm_connector_unregister()
      • drm_get_connector_status_name()
      • drm_connector_list_iter_begin()
      • drm_connector_list_iter_next()
      • drm_connector_list_iter_end()
      • drm_get_subpixel_order_name()
      • drm_display_info_set_bus_formats()
      • drm_get_tv_mode_from_name()
      • drm_mode_create_dvi_i_properties()
      • drm_connector_attach_dp_subconnector_property()
      • drm_connector_attach_content_type_property()
      • drm_connector_attach_tv_margin_properties()
      • drm_mode_create_tv_margin_properties()
      • drm_mode_create_tv_properties_legacy()
      • drm_mode_create_tv_properties()
      • drm_mode_create_scaling_mode_property()
      • drm_connector_attach_vrr_capable_property()
      • drm_connector_attach_scaling_mode_property()
      • drm_mode_create_aspect_ratio_property()
      • drm_mode_create_hdmi_colorspace_property()
      • drm_mode_create_dp_colorspace_property()
      • drm_mode_create_content_type_property()
      • drm_mode_create_suggested_offset_properties()
      • drm_connector_set_path_property()
      • drm_connector_set_tile_property()
      • drm_connector_set_link_status_property()
      • drm_connector_attach_max_bpc_property()
      • drm_connector_attach_hdr_output_metadata_property()
      • drm_connector_attach_broadcast_rgb_property()
      • drm_connector_attach_colorspace_property()
      • drm_connector_atomic_hdr_metadata_equal()
      • drm_connector_set_vrr_capable_property()
      • drm_connector_set_panel_orientation()
      • drm_connector_set_panel_orientation_with_quirk()
      • drm_connector_set_orientation_from_panel()
      • drm_connector_create_privacy_screen_properties()
      • drm_connector_attach_privacy_screen_properties()
      • drm_connector_attach_privacy_screen_provider()
      • drm_connector_update_privacy_screen()
      • drm_connector_oob_hotplug_event()
      • drm_mode_put_tile_group()
      • drm_mode_get_tile_group()
      • drm_mode_create_tile_group()
    • Writeback Connectors
      • drm_writeback_connector
      • drm_writeback_job
      • drm_writeback_connector_init()
      • drm_writeback_connector_init_with_encoder()
      • drmm_writeback_connector_init()
      • drm_writeback_queue_job()
      • drm_writeback_signal_completion()
  • Encoder Abstraction
    • Encoder Functions Reference
      • drm_encoder_funcs
      • drm_encoder
      • drmm_encoder_alloc
      • drmm_plain_encoder_alloc
      • drm_encoder_index()
      • drm_encoder_mask()
      • drm_encoder_crtc_ok()
      • drm_encoder_find()
      • drm_for_each_encoder_mask
      • drm_for_each_encoder
      • drm_encoder_init()
      • drm_encoder_cleanup()
      • drmm_encoder_init()
  • KMS Locking
    • drm_modeset_acquire_ctx
    • drm_modeset_lock
    • drm_modeset_lock_fini()
    • drm_modeset_is_locked()
    • drm_modeset_lock_assert_held()
    • DRM_MODESET_LOCK_ALL_BEGIN
    • DRM_MODESET_LOCK_ALL_END
    • drm_modeset_lock_all()
    • drm_modeset_unlock_all()
    • drm_warn_on_modeset_not_all_locked()
    • drm_modeset_acquire_init()
    • drm_modeset_acquire_fini()
    • drm_modeset_drop_locks()
    • drm_modeset_backoff()
    • drm_modeset_lock_init()
    • drm_modeset_lock_single_interruptible()
    • drm_modeset_unlock()
    • drm_modeset_lock_all_ctx()
  • KMS Properties
    • Requirements
    • Property Types and Blob Property Support
      • drm_property_enum
      • drm_property
      • drm_property_blob
      • drm_property_type_is()
      • drm_property_find()
      • drm_property_create()
      • drm_property_create_enum()
      • drm_property_create_bitmask()
      • drm_property_create_range()
      • drm_property_create_signed_range()
      • drm_property_create_object()
      • drm_property_create_bool()
      • drm_property_add_enum()
      • drm_property_destroy()
      • drm_property_create_blob()
      • drm_property_blob_put()
      • drm_property_blob_get()
      • drm_property_lookup_blob()
      • drm_property_replace_global_blob()
      • drm_property_replace_blob()
      • drm_property_replace_blob_from_id()
    • Standard Connector Properties
    • HDMI Specific Connector Properties
    • Analog TV Specific Connector Properties
    • Standard CRTC Properties
    • Standard Plane Properties
    • Plane Composition Properties
    • Damage Tracking Properties
    • Color Management Properties
    • Tile Group Property
    • Explicit Fencing Properties
    • Variable Refresh Properties
    • Cursor Hotspot Properties
    • Existing KMS Properties
  • Vertical Blanking
    • Vertical Blanking and Interrupt Handling Functions Reference
      • drm_pending_vblank_event
      • drm_vblank_crtc_config
      • drm_vblank_crtc_timer
      • drm_vblank_crtc
      • drm_crtc_accurate_vblank_count()
      • drm_vblank_init()
      • drm_dev_has_vblank()
      • drm_crtc_vblank_waitqueue()
      • drm_calc_timestamping_constants()
      • drm_crtc_vblank_helper_get_vblank_timestamp_internal()
      • drm_crtc_vblank_helper_get_vblank_timestamp()
      • drm_crtc_vblank_count()
      • drm_crtc_vblank_count_and_time()
      • drm_crtc_next_vblank_start()
      • drm_crtc_arm_vblank_event()
      • drm_crtc_send_vblank_event()
      • drm_crtc_vblank_get()
      • drm_crtc_vblank_put()
      • drm_crtc_wait_one_vblank()
      • drm_crtc_vblank_off()
      • drm_crtc_vblank_reset()
      • drm_crtc_set_max_vblank_count()
      • drm_crtc_vblank_on_config()
      • drm_crtc_vblank_on()
      • drm_crtc_vblank_restore()
      • drm_handle_vblank()
      • drm_crtc_handle_vblank()
      • drm_crtc_vblank_start_timer()
      • drm_crtc_vblank_cancel_timer()
      • drm_crtc_vblank_get_vblank_timeout()
  • Vertical Blank Work
    • Vertical Blank Work Functions Reference
      • drm_vblank_work
      • to_drm_vblank_work
      • drm_vblank_work_schedule()
      • drm_vblank_work_cancel_sync()
      • drm_vblank_work_flush()
      • drm_vblank_work_flush_all()
      • drm_vblank_work_init()
• Mode Setting Helper Functions
  • Modeset Helper Reference for Common Vtables
    • drm_crtc_helper_funcs
    • drm_crtc_helper_add()
    • drm_encoder_helper_funcs
    • drm_encoder_helper_add()
    • drm_connector_helper_funcs
    • drm_connector_helper_add()
    • drm_plane_helper_funcs
    • drm_plane_helper_add()
    • drm_mode_config_helper_funcs
  • Atomic Modeset Helper Functions Reference
    • Overview
    • Implementing Asynchronous Atomic Commit
    • Helper Functions Reference
      • drm_atomic_crtc_for_each_plane
      • drm_atomic_crtc_state_for_each_plane
      • drm_atomic_crtc_state_for_each_plane_state
      • drm_atomic_plane_enabling()
      • drm_atomic_plane_disabling()
      • drm_atomic_helper_check_modeset()
      • drm_atomic_helper_check_wb_connector_state()
      • drm_atomic_helper_check_plane_state()
      • drm_atomic_helper_check_crtc_primary_plane()
      • drm_atomic_helper_check_planes()
      • drm_atomic_helper_check()
      • drm_atomic_helper_commit_encoder_bridge_disable()
      • drm_atomic_helper_commit_crtc_disable()
      • drm_atomic_helper_commit_encoder_bridge_post_disable()
      • drm_atomic_helper_update_legacy_modeset_state()
      • drm_atomic_helper_calc_timestamping_constants()
      • drm_atomic_helper_commit_crtc_set_mode()
      • drm_atomic_helper_commit_modeset_disables()
      • drm_atomic_helper_commit_writebacks()
      • drm_atomic_helper_commit_encoder_bridge_pre_enable()
      • drm_atomic_helper_commit_crtc_enable()
      • drm_atomic_helper_commit_encoder_bridge_enable()
      • drm_atomic_helper_commit_modeset_enables()
      • drm_atomic_helper_wait_for_fences()
      • drm_atomic_helper_wait_for_vblanks()
      • drm_atomic_helper_wait_for_flip_done()
      • drm_atomic_helper_commit_tail()
      • drm_atomic_helper_commit_tail_rpm()
      • drm_atomic_helper_async_check()
      • drm_atomic_helper_async_commit()
      • drm_atomic_helper_commit()
      • drm_atomic_helper_setup_commit()
      • drm_atomic_helper_wait_for_dependencies()
      • drm_atomic_helper_fake_vblank()
      • drm_atomic_helper_commit_hw_done()
      • drm_atomic_helper_commit_cleanup_done()
      • drm_atomic_helper_prepare_planes()
      • drm_atomic_helper_unprepare_planes()
      • drm_atomic_helper_commit_planes()
      • drm_atomic_helper_commit_planes_on_crtc()
      • drm_atomic_helper_disable_planes_on_crtc()
      • drm_atomic_helper_cleanup_planes()
      • drm_atomic_helper_swap_state()
      • drm_atomic_helper_update_plane()
      • drm_atomic_helper_disable_plane()
      • drm_atomic_helper_set_config()
      • drm_atomic_helper_disable_all()
      • drm_atomic_helper_reset_crtc()
      • drm_atomic_helper_shutdown()
      • drm_atomic_helper_duplicate_state()
      • drm_atomic_helper_suspend()
      • drm_atomic_helper_commit_duplicated_state()
      • drm_atomic_helper_resume()
      • drm_atomic_helper_page_flip()
      • drm_atomic_helper_page_flip_target()
      • drm_atomic_helper_bridge_propagate_bus_fmt()
    • Atomic State Reset and Initialization
    • Atomic State Helper Reference
      • __drm_atomic_helper_crtc_state_reset()
      • __drm_atomic_helper_crtc_reset()
      • drm_atomic_helper_crtc_reset()
      • __drm_atomic_helper_crtc_duplicate_state()
      • drm_atomic_helper_crtc_duplicate_state()
      • __drm_atomic_helper_crtc_destroy_state()
      • drm_atomic_helper_crtc_destroy_state()
      • __drm_atomic_helper_plane_state_reset()
      • __drm_atomic_helper_plane_reset()
      • drm_atomic_helper_plane_reset()
      • __drm_atomic_helper_plane_duplicate_state()
      • drm_atomic_helper_plane_duplicate_state()
      • __drm_atomic_helper_plane_destroy_state()
      • drm_atomic_helper_plane_destroy_state()
      • __drm_atomic_helper_connector_state_reset()
      • __drm_atomic_helper_connector_reset()
      • drm_atomic_helper_connector_reset()
      • drm_atomic_helper_connector_tv_margins_reset()
      • drm_atomic_helper_connector_tv_reset()
      • drm_atomic_helper_connector_tv_check()
      • __drm_atomic_helper_connector_duplicate_state()
      • drm_atomic_helper_connector_duplicate_state()
      • __drm_atomic_helper_connector_destroy_state()
      • drm_atomic_helper_connector_destroy_state()
      • __drm_atomic_helper_private_obj_duplicate_state()
      • __drm_atomic_helper_bridge_duplicate_state()
      • drm_atomic_helper_bridge_duplicate_state()
      • drm_atomic_helper_bridge_destroy_state()
      • __drm_atomic_helper_bridge_reset()
      • drm_atomic_helper_bridge_reset()
    • GEM Atomic Helper Reference
      • DRM_SHADOW_PLANE_MAX_WIDTH
      • DRM_SHADOW_PLANE_MAX_HEIGHT
      • drm_shadow_plane_state
      • to_drm_shadow_plane_state()
      • DRM_GEM_SHADOW_PLANE_FUNCS
      • DRM_GEM_SHADOW_PLANE_HELPER_FUNCS
      • DRM_GEM_SIMPLE_DISPLAY_PIPE_SHADOW_PLANE_FUNCS
      • drm_gem_plane_helper_prepare_fb()
      • __drm_gem_duplicate_shadow_plane_state()
      • drm_gem_duplicate_shadow_plane_state()
      • __drm_gem_destroy_shadow_plane_state()
      • drm_gem_destroy_shadow_plane_state()
      • __drm_gem_reset_shadow_plane()
      • drm_gem_reset_shadow_plane()
      • drm_gem_begin_shadow_fb_access()
      • drm_gem_end_shadow_fb_access()
      • drm_gem_simple_kms_begin_shadow_fb_access()
      • drm_gem_simple_kms_end_shadow_fb_access()
      • drm_gem_simple_kms_reset_shadow_plane()
      • drm_gem_simple_kms_duplicate_shadow_plane_state()
      • drm_gem_simple_kms_destroy_shadow_plane_state()
    • VBLANK Helper Reference
      • DRM_CRTC_HELPER_VBLANK_FUNCS
      • DRM_CRTC_VBLANK_TIMER_FUNCS
      • drm_crtc_vblank_atomic_flush()
      • drm_crtc_vblank_atomic_enable()
      • drm_crtc_vblank_atomic_disable()
      • drm_crtc_vblank_helper_enable_vblank_timer()
      • drm_crtc_vblank_helper_disable_vblank_timer()
      • drm_crtc_vblank_helper_get_vblank_timestamp_from_timer()
  • Simple KMS Helper Reference
    • drm_simple_display_pipe_funcs
    • drm_simple_display_pipe
    • drmm_simple_encoder_alloc
    • drm_simple_encoder_init()
    • drm_simple_display_pipe_attach_bridge()
    • drm_simple_display_pipe_init()
  • fbdev Helper Functions Reference
    • drm_fb_helper_surface_size
    • drm_fb_helper_funcs
    • drm_fb_helper
    • DRM_FB_HELPER_DEFAULT_OPS
    • drm_fb_helper_restore_fbdev_mode_unlocked()
    • drm_fb_helper_blank()
    • drm_fb_helper_prepare()
    • drm_fb_helper_unprepare()
    • drm_fb_helper_init()
    • drm_fb_helper_unregister_info()
    • drm_fb_helper_fini()
    • drm_fb_helper_deferred_io()
    • drm_fb_helper_set_suspend()
    • drm_fb_helper_set_suspend_unlocked()
    • drm_fb_helper_setcmap()
    • drm_fb_helper_ioctl()
    • drm_fb_helper_check_var()
    • drm_fb_helper_set_par()
    • drm_fb_helper_pan_display()
    • drm_fb_helper_fill_info()
    • drm_fb_helper_initial_config()
    • drm_fb_helper_hotplug_event()
  • format Helper Functions Reference
    • drm_format_conv_state_init()
    • drm_format_conv_state_copy()
    • drm_format_conv_state_reserve()
    • drm_format_conv_state_release()
    • drm_fb_clip_offset()
    • drm_fb_memcpy()
    • drm_fb_swab()
    • drm_fb_xrgb8888_to_rgb332()
    • drm_fb_xrgb8888_to_rgb565()
    • drm_fb_xrgb8888_to_rgb565be()
    • drm_fb_xrgb8888_to_xrgb1555()
    • drm_fb_xrgb8888_to_argb1555()
    • drm_fb_xrgb8888_to_rgba5551()
    • drm_fb_xrgb8888_to_rgb888()
    • drm_fb_xrgb8888_to_bgr888()
    • drm_fb_xrgb8888_to_argb8888()
    • drm_fb_xrgb8888_to_abgr8888()
    • drm_fb_xrgb8888_to_xbgr8888()
    • drm_fb_xrgb8888_to_bgrx8888()
    • drm_fb_xrgb8888_to_xrgb2101010()
    • drm_fb_xrgb8888_to_argb2101010()
    • drm_fb_xrgb8888_to_gray8()
    • drm_fb_argb8888_to_argb4444()
    • drm_fb_xrgb8888_to_mono()
    • drm_fb_xrgb8888_to_gray2()
  • Framebuffer DMA Helper Functions Reference
    • drm_fb_dma_get_gem_obj()
    • drm_fb_dma_get_gem_addr()
    • drm_fb_dma_sync_non_coherent()
    • drm_fb_dma_get_scanout_buffer()
  • Framebuffer GEM Helper Reference
    • drm_gem_fb_get_obj()
    • drm_gem_fb_destroy()
    • drm_gem_fb_create_handle()
    • drm_gem_fb_init_with_funcs()
    • drm_gem_fb_create_with_funcs()
    • drm_gem_fb_create()
    • drm_gem_fb_create_with_dirty()
    • drm_gem_fb_vmap()
    • drm_gem_fb_vunmap()
    • drm_gem_fb_begin_cpu_access()
    • drm_gem_fb_end_cpu_access()
    • drm_gem_fb_afbc_init()
  • Bridges
    • Overview
    • Display Driver Integration
    • Special Care with MIPI-DSI bridges
    • Bridge Operations
    • Bridge Connector Helper
    • Bridge Helper Reference
      • drm_bridge_attach_flags
      • drm_bridge_funcs
      • drm_bridge_timings
      • drm_bridge_ops
      • drm_bridge
      • devm_drm_bridge_alloc
      • drm_bridge_get_current_state()
      • drm_bridge_get_next_bridge()
      • drm_bridge_get_prev_bridge()
      • drm_bridge_chain_get_first_bridge()
      • drm_bridge_chain_get_last_bridge()
      • drm_bridge_get_next_bridge_and_put()
      • drm_for_each_bridge_in_chain_scoped
      • drm_for_each_bridge_in_chain_from
      • drm_bridge_enter()
      • drm_bridge_exit()
      • drm_bridge_unplug()
      • drm_bridge_get()
      • drm_bridge_put()
      • drm_bridge_add()
      • devm_drm_bridge_add()
      • drm_bridge_remove()
      • drm_bridge_attach()
      • drm_bridge_chain_mode_valid()
      • drm_bridge_chain_mode_set()
      • drm_atomic_bridge_chain_disable()
      • drm_atomic_bridge_chain_post_disable()
      • drm_atomic_bridge_chain_pre_enable()
      • drm_atomic_bridge_chain_enable()
      • drm_atomic_bridge_chain_check()
      • drm_bridge_detect()
      • drm_bridge_get_modes()
      • drm_bridge_edid_read()
      • drm_bridge_hpd_enable()
      • drm_bridge_hpd_disable()
      • drm_bridge_hpd_notify()
      • of_drm_find_and_get_bridge()
      • of_drm_find_bridge()
      • devm_drm_put_bridge()
    • MIPI-DSI bridge operation
    • Bridge Connector Helper Reference
      • drm_bridge_connector_init()
    • Panel-Bridge Helper Reference
      • drm_bridge_is_panel()
      • drm_panel_bridge_add()
      • drm_panel_bridge_add_typed()
      • drm_panel_bridge_remove()
      • drm_panel_bridge_set_orientation()
      • devm_drm_panel_bridge_add()
      • devm_drm_panel_bridge_add_typed()
      • drmm_panel_bridge_add()
      • drm_panel_bridge_connector()
      • devm_drm_of_get_bridge()
      • drmm_of_get_bridge()
  • Panel Helper Reference
    • drm_panel_funcs
    • drm_panel
    • devm_drm_panel_alloc
    • drm_panel_init()
    • drm_panel_add()
    • drm_panel_remove()
    • drm_panel_prepare()
    • drm_panel_unprepare()
    • drm_panel_enable()
    • drm_panel_disable()
    • drm_panel_get_modes()
    • drm_panel_get()
    • drm_panel_put()
    • of_drm_find_panel()
    • of_drm_get_panel_orientation()
    • drm_is_panel_follower()
    • drm_panel_add_follower()
    • drm_panel_remove_follower()
    • devm_drm_panel_add_follower()
    • drm_panel_of_backlight()
    • drm_get_panel_orientation_quirk()
    • drm_get_panel_backlight_quirk()
  • Panel Self Refresh Helper Reference
    • drm_self_refresh_helper_update_avg_times()
    • drm_self_refresh_helper_alter_state()
    • drm_self_refresh_helper_init()
    • drm_self_refresh_helper_cleanup()
  • HDMI Atomic State Helpers
    • Overview
      • Infoframes Compliance
      • Testing
    • Functions Reference
      • __drm_atomic_helper_connector_hdmi_reset()
      • drm_atomic_helper_connector_hdmi_check()
      • drm_hdmi_connector_mode_valid()
      • drm_atomic_helper_connector_hdmi_update_infoframes()
      • drm_atomic_helper_connector_hdmi_update_audio_infoframe()
      • drm_atomic_helper_connector_hdmi_clear_audio_infoframe()
      • drm_atomic_helper_connector_hdmi_hotplug()
      • drm_atomic_helper_connector_hdmi_force()
  • HDCP Helper Functions Reference
    • drm_hdcp_check_ksvs_revoked()
    • drm_connector_attach_content_protection_property()
    • drm_hdcp_update_content_protection()
  • Display Port Helper Functions Reference
    • dp_sdp_header
    • dp_sdp
    • dp_pixelformat
    • dp_colorimetry
    • dp_dynamic_range
    • dp_content_type
    • drm_dp_vsc_sdp
    • drm_dp_as_sdp
    • drm_dp_dsc_sink_supports_format()
    • drm_edp_backlight_supported()
    • drm_dp_is_uhbr_rate()
    • drm_dp_aux_msg
    • drm_dp_aux_cec
    • drm_dp_aux
    • drm_dp_dpcd_readb()
    • drm_dp_dpcd_read_data()
    • drm_dp_dpcd_write_data()
    • drm_dp_dpcd_writeb()
    • drm_dp_dpcd_read_byte()
    • drm_dp_dpcd_write_byte()
    • drm_dp_desc
    • drm_dp_quirk
    • drm_dp_has_quirk()
    • drm_edp_backlight_info
    • drm_dp_phy_test_params
    • drm_dp_phy_name()
    • drm_dp_lttpr_wake_timeout_setup()
    • drm_dp_dpcd_probe()
    • drm_dp_dpcd_set_powered()
    • drm_dp_dpcd_set_probe()
    • drm_dp_dpcd_read()
    • drm_dp_dpcd_write()
    • drm_dp_dpcd_read_link_status()
    • drm_dp_dpcd_read_phy_link_status()
    • drm_dp_link_power_up()
    • drm_dp_link_power_down()
    • drm_dp_dpcd_write_payload()
    • drm_dp_dpcd_clear_payload()
    • drm_dp_dpcd_poll_act_handled()
    • drm_dp_downstream_is_type()
    • drm_dp_downstream_is_tmds()
    • drm_dp_send_real_edid_checksum()
    • drm_dp_read_dpcd_caps()
    • drm_dp_read_downstream_info()
    • drm_dp_downstream_max_dotclock()
    • drm_dp_downstream_max_tmds_clock()
    • drm_dp_downstream_min_tmds_clock()
    • drm_dp_downstream_max_bpc()
    • drm_dp_downstream_420_passthrough()
    • drm_dp_downstream_444_to_420_conversion()
    • drm_dp_downstream_rgb_to_ycbcr_conversion()
    • drm_dp_downstream_mode()
    • drm_dp_downstream_id()
    • drm_dp_downstream_debug()
    • drm_dp_subconnector_type()
    • drm_dp_set_subconnector_property()
    • drm_dp_read_sink_count_cap()
    • drm_dp_read_sink_count()
    • drm_dp_remote_aux_init()
    • drm_dp_aux_init()
    • drm_dp_aux_register()
    • drm_dp_aux_unregister()
    • drm_dp_psr_setup_time()
    • drm_dp_start_crc()
    • drm_dp_stop_crc()
    • drm_dp_read_desc()
    • drm_dp_dump_lttpr_desc()
    • drm_dp_dsc_sink_bpp_incr()
    • drm_dp_dsc_slice_count_to_mask()
    • drm_dp_dsc_sink_slice_count_mask()
    • drm_dp_dsc_sink_max_slice_count()
    • drm_dp_dsc_sink_line_buf_depth()
    • drm_dp_dsc_sink_supported_input_bpcs()
    • drm_dp_dsc_sink_max_slice_throughput()
    • drm_dp_dsc_branch_max_overall_throughput()
    • drm_dp_dsc_branch_max_line_width()
    • drm_dp_read_lttpr_common_caps()
    • drm_dp_read_lttpr_phy_caps()
    • drm_dp_lttpr_count()
    • drm_dp_lttpr_max_link_rate()
    • drm_dp_lttpr_set_transparent_mode()
    • drm_dp_lttpr_init()
    • drm_dp_lttpr_max_lane_count()
    • drm_dp_lttpr_voltage_swing_level_3_supported()
    • drm_dp_lttpr_pre_emphasis_level_3_supported()
    • drm_dp_get_phy_test_pattern()
    • drm_dp_set_phy_test_pattern()
    • drm_dp_as_sdp_supported()
    • drm_dp_vsc_sdp_supported()
    • drm_dp_vsc_sdp_pack()
    • drm_dp_get_pcon_max_frl_bw()
    • drm_dp_pcon_frl_prepare()
    • drm_dp_pcon_is_frl_ready()
    • drm_dp_pcon_frl_configure_1()
    • drm_dp_pcon_frl_configure_2()
    • drm_dp_pcon_reset_frl_config()
    • drm_dp_pcon_frl_enable()
    • drm_dp_pcon_hdmi_link_active()
    • drm_dp_pcon_hdmi_link_mode()
    • drm_dp_pcon_hdmi_frl_link_error_count()
    • drm_dp_pcon_pps_default()
    • drm_dp_pcon_pps_override_buf()
    • drm_edp_backlight_set_level()
    • drm_edp_backlight_enable()
    • drm_edp_backlight_disable()
    • drm_edp_backlight_init()
    • drm_panel_dp_aux_backlight()
    • drm_dp_link_symbol_cycles()
    • drm_dp_bw_overhead()
    • drm_dp_bw_channel_coding_efficiency()
    • drm_dp_max_dprx_data_rate()
  • Display Port CEC Helper Functions Reference
    • drm_dp_cec_irq()
    • drm_dp_cec_register_connector()
    • drm_dp_cec_unregister_connector()
  • Display Port Dual Mode Adaptor Helper Functions Reference
    • drm_lspcon_mode
    • drm_dp_dual_mode_type
    • drm_dp_dual_mode_read()
    • drm_dp_dual_mode_write()
    • drm_dp_dual_mode_detect()
    • drm_dp_dual_mode_max_tmds_clock()
    • drm_dp_dual_mode_get_tmds_output()
    • drm_dp_dual_mode_set_tmds_output()
    • drm_dp_get_dual_mode_type_name()
    • drm_lspcon_get_mode()
    • drm_lspcon_set_mode()
  • Display Port MST Helpers
    • Overview
      • Topology refcount overview
      • Malloc refcount overview
      • Refcount relationships in a topology
    • Functions Reference
      • drm_dp_mst_port
      • drm_dp_mst_branch
      • drm_dp_mst_atomic_payload
      • drm_dp_mst_topology_state
      • drm_dp_mst_topology_mgr
      • drm_dp_mst_mode
      • __drm_dp_mst_state_iter_get()
      • for_each_oldnew_mst_mgr_in_state
      • for_each_old_mst_mgr_in_state
      • for_each_new_mst_mgr_in_state
      • drm_dp_mst_get_port_malloc()
      • drm_dp_mst_put_port_malloc()
      • drm_dp_mst_connector_late_register()
      • drm_dp_mst_connector_early_unregister()
      • drm_dp_add_payload_part1()
      • drm_dp_remove_payload_part1()
      • drm_dp_remove_payload_part2()
      • drm_dp_add_payload_part2()
      • drm_dp_get_vc_payload_bw()
      • drm_dp_read_mst_cap()
      • drm_dp_mst_topology_mgr_set_mst()
      • drm_dp_mst_topology_queue_probe()
      • drm_dp_mst_topology_mgr_suspend()
      • drm_dp_mst_topology_mgr_resume()
      • drm_dp_mst_hpd_irq_handle_event()
      • drm_dp_mst_hpd_irq_send_new_request()
      • drm_dp_mst_detect_port()
      • drm_dp_mst_edid_read()
      • drm_dp_mst_get_edid()
      • drm_dp_atomic_find_time_slots()
      • drm_dp_atomic_release_time_slots()
      • drm_dp_mst_atomic_setup_commit()
      • drm_dp_mst_atomic_wait_for_dependencies()
      • drm_dp_mst_root_conn_atomic_check()
      • drm_dp_mst_update_slots()
      • drm_dp_check_act_status()
      • drm_dp_calc_pbn_mode()
      • drm_dp_mst_dump_topology()
      • drm_dp_mst_port_downstream_of_parent()
      • drm_dp_mst_add_affected_dsc_crtcs()
      • drm_dp_mst_atomic_enable_dsc()
      • drm_dp_mst_atomic_check_mgr()
      • drm_dp_mst_atomic_check()
      • drm_atomic_get_mst_topology_state()
      • drm_atomic_get_old_mst_topology_state()
      • drm_atomic_get_new_mst_topology_state()
      • drm_dp_mst_topology_mgr_init()
      • drm_dp_mst_topology_mgr_destroy()
      • drm_dp_mst_aux_for_parent()
      • drm_dp_mst_dsc_aux_for_port()
    • Topology Lifetime Internals
      • drm_dp_mst_get_mstb_malloc()
      • drm_dp_mst_put_mstb_malloc()
      • drm_dp_mst_topology_try_get_mstb()
      • drm_dp_mst_topology_get_mstb()
      • drm_dp_mst_topology_put_mstb()
      • drm_dp_mst_topology_try_get_port()
      • drm_dp_mst_topology_get_port()
      • drm_dp_mst_topology_put_port()
  • MIPI DBI Helper Functions Reference
    • mipi_dbi
    • mipi_dbi_dev
    • mipi_dbi_command
    • DRM_MIPI_DBI_SIMPLE_DISPLAY_PIPE_FUNCS
    • mipi_dbi_command_read()
    • mipi_dbi_command_buf()
    • mipi_dbi_buf_copy()
    • mipi_dbi_pipe_mode_valid()
    • mipi_dbi_pipe_update()
    • mipi_dbi_enable_flush()
    • mipi_dbi_pipe_disable()
    • mipi_dbi_pipe_begin_fb_access()
    • mipi_dbi_pipe_end_fb_access()
    • mipi_dbi_pipe_reset_plane()
    • mipi_dbi_pipe_duplicate_plane_state()
    • mipi_dbi_pipe_destroy_plane_state()
    • mipi_dbi_dev_init_with_formats()
    • mipi_dbi_dev_init()
    • mipi_dbi_hw_reset()
    • mipi_dbi_display_is_on()
    • mipi_dbi_poweron_reset()
    • mipi_dbi_poweron_conditional_reset()
    • mipi_dbi_spi_cmd_max_speed()
    • mipi_dbi_spi_init()
    • mipi_dbi_spi_transfer()
    • mipi_dbi_debugfs_init()
  • MIPI DSI Helper Functions Reference
    • mipi_dsi_msg
    • mipi_dsi_packet
    • mipi_dsi_host_ops
    • mipi_dsi_host
    • mipi_dsi_device_info
    • mipi_dsi_device
    • mipi_dsi_multi_context
    • mipi_dsi_pixel_format_to_bpp()
    • mipi_dsi_dcs_tear_mode
    • mipi_dsi_generic_write_seq_multi
    • mipi_dsi_generic_write_var_seq_multi
    • mipi_dsi_dcs_write_seq_multi
    • mipi_dsi_dcs_write_var_seq_multi
    • mipi_dsi_dual
    • mipi_dsi_dual_generic_write_seq_multi
    • mipi_dsi_dual_dcs_write_seq_multi
    • mipi_dsi_driver
    • of_find_mipi_dsi_device_by_node()
    • mipi_dsi_device_register_full()
    • mipi_dsi_device_unregister()
    • devm_mipi_dsi_device_register_full()
    • of_find_mipi_dsi_host_by_node()
    • mipi_dsi_attach()
    • mipi_dsi_detach()
    • devm_mipi_dsi_attach()
    • mipi_dsi_packet_format_is_short()
    • mipi_dsi_packet_format_is_long()
    • mipi_dsi_create_packet()
    • mipi_dsi_shutdown_peripheral()
    • mipi_dsi_turn_on_peripheral()
    • mipi_dsi_compression_mode_ext()
    • mipi_dsi_compression_mode()
    • mipi_dsi_picture_parameter_set()
    • mipi_dsi_generic_write()
    • mipi_dsi_generic_write_multi()
    • mipi_dsi_dual_generic_write_multi()
    • mipi_dsi_generic_read()
    • drm_mipi_dsi_get_input_bus_fmt()
    • mipi_dsi_dcs_write_buffer()
    • mipi_dsi_dcs_write_buffer_chatty()
    • mipi_dsi_dcs_write_buffer_multi()
    • mipi_dsi_dual_dcs_write_buffer_multi()
    • mipi_dsi_dcs_write()
    • mipi_dsi_dcs_read()
    • mipi_dsi_dcs_read_multi()
    • mipi_dsi_dcs_nop()
    • mipi_dsi_dcs_soft_reset()
    • mipi_dsi_dcs_get_power_mode()
    • mipi_dsi_dcs_get_pixel_format()
    • mipi_dsi_dcs_enter_sleep_mode()
    • mipi_dsi_dcs_exit_sleep_mode()
    • mipi_dsi_dcs_set_display_off()
    • mipi_dsi_dcs_set_display_on()
    • mipi_dsi_dcs_set_column_address()
    • mipi_dsi_dcs_set_page_address()
    • mipi_dsi_dcs_set_tear_on()
    • mipi_dsi_dcs_set_pixel_format()
    • mipi_dsi_dcs_set_tear_scanline()
    • mipi_dsi_dcs_set_display_brightness()
    • mipi_dsi_dcs_get_display_brightness()
    • mipi_dsi_dcs_set_display_brightness_large()
    • mipi_dsi_dcs_get_display_brightness_large()
    • mipi_dsi_picture_parameter_set_multi()
    • mipi_dsi_compression_mode_ext_multi()
    • mipi_dsi_compression_mode_multi()
    • mipi_dsi_dcs_nop_multi()
    • mipi_dsi_dcs_enter_sleep_mode_multi()
    • mipi_dsi_dcs_exit_sleep_mode_multi()
    • mipi_dsi_dcs_set_display_off_multi()
    • mipi_dsi_dcs_set_display_on_multi()
    • mipi_dsi_dcs_set_tear_on_multi()
    • mipi_dsi_turn_on_peripheral_multi()
    • mipi_dsi_dcs_set_tear_off_multi()
    • mipi_dsi_dcs_soft_reset_multi()
    • mipi_dsi_dcs_set_display_brightness_multi()
    • mipi_dsi_dcs_set_pixel_format_multi()
    • mipi_dsi_dcs_set_column_address_multi()
    • mipi_dsi_dcs_set_page_address_multi()
    • mipi_dsi_dcs_set_tear_scanline_multi()
    • mipi_dsi_driver_register_full()
    • mipi_dsi_driver_unregister()
  • Display Stream Compression Helper Functions Reference
    • drm_dsc_rc_range_parameters
    • drm_dsc_config
    • drm_dsc_picture_parameter_set
    • drm_dsc_pps_infoframe
    • drm_dsc_dp_pps_header_init()
    • drm_dsc_dp_rc_buffer_size()
    • drm_dsc_pps_payload_pack()
    • drm_dsc_set_const_params()
    • drm_dsc_set_rc_buf_thresh()
    • drm_dsc_setup_rc_params()
    • drm_dsc_compute_rc_parameters()
    • drm_dsc_get_bpp_int()
    • drm_dsc_initial_scale_value()
    • drm_dsc_flatness_det_thresh()
    • drm_dsc_dump_config()
  • Output Probing Helper Functions Reference
    • drm_kms_helper_poll_enable()
    • drm_kms_helper_poll_reschedule()
    • drm_helper_probe_detect()
    • drm_helper_probe_single_connector_modes()
    • drm_kms_helper_hotplug_event()
    • drm_kms_helper_connector_hotplug_event()
    • drm_kms_helper_is_poll_worker()
    • drm_kms_helper_poll_disable()
    • drm_kms_helper_poll_init()
    • drm_kms_helper_poll_fini()
    • drmm_kms_helper_poll_init()
    • drm_connector_helper_hpd_irq_event()
    • drm_helper_hpd_irq_event()
    • drm_crtc_helper_mode_valid_fixed()
    • drm_connector_helper_get_modes_fixed()
    • drm_connector_helper_get_modes()
    • drm_connector_helper_tv_get_modes()
    • drm_connector_helper_detect_from_ddc()
  • EDID Helper Functions Reference
    • drm_edid_decode_mfg_id()
    • drm_edid_encode_panel_id
    • drm_edid_decode_panel_id()
    • drm_edid_header_is_valid()
    • drm_edid_is_valid()
    • drm_edid_valid()
    • drm_edid_override_connector_update()
    • drm_edid_raw()
    • drm_edid_alloc()
    • drm_edid_dup()
    • drm_edid_free()
    • drm_probe_ddc()
    • drm_get_edid()
    • drm_edid_read_custom()
    • drm_edid_read_ddc()
    • drm_edid_read()
    • drm_edid_get_product_id()
    • drm_edid_print_product_id()
    • drm_edid_get_panel_id()
    • drm_edid_read_base_block()
    • drm_get_edid_switcheroo()
    • drm_edid_read_switcheroo()
    • drm_edid_duplicate()
    • drm_match_cea_mode()
    • drm_display_mode_from_cea_vic()
    • drm_edid_match()
    • drm_edid_get_monitor_name()
    • drm_edid_to_sad()
    • drm_edid_to_speaker_allocation()
    • drm_av_sync_delay()
    • drm_detect_hdmi_monitor()
    • drm_detect_monitor_audio()
    • drm_default_rgb_quant_range()
    • drm_edid_connector_update()
    • drm_edid_connector_add_modes()
    • drm_connector_update_edid_property()
    • drm_add_edid_modes()
    • drm_add_modes_noedid()
    • drm_hdmi_avi_infoframe_from_display_mode()
    • drm_hdmi_avi_infoframe_quant_range()
    • drm_hdmi_vendor_infoframe_from_display_mode()
    • drm_edid_is_digital()
    • drm_eld_mnl()
    • drm_eld_sad()
    • drm_eld_sad_count()
    • drm_eld_calc_baseline_block_size()
    • drm_eld_size()
    • drm_eld_get_spk_alloc()
    • drm_eld_get_conn_type()
    • drm_eld_sad_get()
    • drm_eld_sad_set()
  • SCDC Helper Functions Reference
    • drm_scdc_readb()
    • drm_scdc_writeb()
    • drm_scdc_read()
    • drm_scdc_write()
    • drm_scdc_get_scrambling_status()
    • drm_scdc_set_scrambling()
    • drm_scdc_set_high_tmds_clock_ratio()
  • HDMI Infoframes Helper Reference
    • hdr_sink_metadata
    • hdmi_infoframe
    • hdmi_avi_infoframe_init()
    • hdmi_avi_infoframe_check()
    • hdmi_avi_infoframe_pack_only()
    • hdmi_avi_infoframe_pack()
    • hdmi_spd_infoframe_init()
    • hdmi_spd_infoframe_check()
    • hdmi_spd_infoframe_pack_only()
    • hdmi_spd_infoframe_pack()
    • hdmi_audio_infoframe_init()
    • hdmi_audio_infoframe_check()
    • hdmi_audio_infoframe_pack_only()
    • hdmi_audio_infoframe_pack()
    • hdmi_audio_infoframe_pack_for_dp()
    • hdmi_vendor_infoframe_init()
    • hdmi_vendor_infoframe_check()
    • hdmi_vendor_infoframe_pack_only()
    • hdmi_vendor_infoframe_pack()
    • hdmi_drm_infoframe_init()
    • hdmi_drm_infoframe_check()
    • hdmi_drm_infoframe_pack_only()
    • hdmi_drm_infoframe_pack()
    • hdmi_infoframe_pack_only()
    • hdmi_infoframe_pack()
    • hdmi_infoframe_log()
    • hdmi_drm_infoframe_unpack_only()
    • hdmi_infoframe_unpack()
  • Rectangle Utilities Reference
    • drm_rect
    • DRM_RECT_INIT
    • DRM_RECT_FMT
    • DRM_RECT_ARG
    • DRM_RECT_FP_FMT
    • DRM_RECT_FP_ARG
    • drm_rect_init()
    • drm_rect_adjust_size()
    • drm_rect_translate()
    • drm_rect_translate_to()
    • drm_rect_downscale()
    • drm_rect_width()
    • drm_rect_height()
    • drm_rect_visible()
    • drm_rect_equals()
    • drm_rect_fp_to_int()
    • drm_rect_overlap()
    • drm_rect_intersect()
    • drm_rect_clip_scaled()
    • drm_rect_calc_hscale()
    • drm_rect_calc_vscale()
    • drm_rect_debug_print()
    • drm_rect_rotate()
    • drm_rect_rotate_inv()
  • Flip-work Helper Reference
    • drm_flip_work
    • drm_flip_work_queue()
    • drm_flip_work_commit()
    • drm_flip_work_init()
    • drm_flip_work_cleanup()
  • Auxiliary Modeset Helpers
    • drm_helper_move_panel_connectors_to_head()
    • drm_helper_mode_fill_fb_struct()
    • drm_crtc_init()
    • drm_mode_config_helper_suspend()
    • drm_mode_config_helper_resume()
  • OF/DT Helpers
    • drm_of_crtc_port_mask()
    • drm_of_find_possible_crtcs()
    • drm_of_component_match_add()
    • drm_of_component_probe()
    • drm_of_find_panel_or_bridge()
    • drm_of_lvds_get_dual_link_pixel_order()
    • drm_of_lvds_get_dual_link_pixel_order_sink()
    • drm_of_lvds_get_data_mapping()
    • drm_of_get_data_lanes_count()
    • drm_of_get_data_lanes_count_ep()
    • drm_of_get_dsi_bus()
  • Legacy Plane Helper Reference
    • drm_plane_helper_update_primary()
    • drm_plane_helper_disable_primary()
    • drm_plane_helper_destroy()
  • Legacy CRTC/Modeset Helper Functions Reference
    • drm_helper_encoder_in_use()
    • drm_helper_crtc_in_use()
    • drm_helper_disable_unused_functions()
    • drm_crtc_helper_set_mode()
    • drm_crtc_helper_atomic_check()
    • drm_crtc_helper_set_config()
    • drm_helper_connector_dpms()
    • drm_helper_resume_force_mode()
    • drm_helper_force_disable_all()
  • Privacy-screen class
    • drm_privacy_screen_ops
    • drm_privacy_screen
    • drm_privacy_screen_lookup
    • drm_privacy_screen_lookup_add()
    • drm_privacy_screen_lookup_remove()
    • drm_privacy_screen_get()
    • drm_privacy_screen_put()
    • drm_privacy_screen_set_sw_state()
    • drm_privacy_screen_get_state()
    • drm_privacy_screen_register_notifier()
    • drm_privacy_screen_unregister_notifier()
    • drm_privacy_screen_register()
    • drm_privacy_screen_unregister()
    • drm_privacy_screen_call_notifier_chain()
• Userland interfaces
  • libdrm Device Lookup
  • Primary Nodes, DRM Master and Authentication
    • drm_is_current_master()
    • drm_master_get()
    • drm_file_get_master()
    • drm_master_put()
    • drm_master
  • DRM Display Resource Leasing
  • Open-Source Userspace Requirements
  • Render nodes
  • Device Hot-Unplug
    • Requirements for KMS UAPI
    • Requirements for Render and Cross-Device UAPI
    • Requirements for Memory Maps
  • Device reset
    • Kernel Mode Driver
    • User Mode Driver
    • Robustness
      • OpenGL
      • Vulkan
    • Reporting causes of resets
  • Device Wedging
    • Driver prerequisites
    • Recovery
    • Vendor Specific Recovery
    • Task information
    • Consumer prerequisites
    • Example - rebind
    • Customization
  • IOCTL Support on Device Nodes
    • Recommended IOCTL Return Values
      • drm_ioctl_t
      • drm_ioctl_compat_t
      • drm_ioctl_flags
      • drm_ioctl_desc
      • DRM_IOCTL_DEF_DRV
      • drm_noop()
      • drm_invalid_op()
      • drm_ioctl()
      • drm_compat_ioctl()
  • Testing and validation
    • Testing Requirements for userspace API
    • Validating changes with IGT
    • Using VKMS to test DRM API
    • Display CRC Support
      • drm_crtc_add_crc_entry()
    • Debugfs Support
      • DRM_DEBUGFS_GPUVA_INFO
      • drm_info_list
      • drm_info_node
      • drm_debugfs_info
      • drm_debugfs_entry
      • drm_debugfs_gpuva_info()
      • drm_debugfs_create_files()
      • drm_debugfs_add_file()
      • drm_debugfs_add_files()
  • Sysfs Support
    • drm_sysfs_hotplug_event()
    • drm_sysfs_connector_hotplug_event()
    • drm_sysfs_connector_property_event()
    • drm_class_device_register()
    • drm_class_device_unregister()
  • VBlank event handling
  • Userspace API Structures
    • CRTC index
      • drm_gem_close
      • drm_gem_flink
      • drm_gem_open
      • drm_gem_change_handle
      • DRM_CAP_DUMB_BUFFER
      • DRM_CAP_VBLANK_HIGH_CRTC
      • DRM_CAP_DUMB_PREFERRED_DEPTH
      • DRM_CAP_DUMB_PREFER_SHADOW
      • DRM_CAP_PRIME
      • DRM_PRIME_CAP_IMPORT
      • DRM_PRIME_CAP_EXPORT
      • DRM_CAP_TIMESTAMP_MONOTONIC
      • DRM_CAP_ASYNC_PAGE_FLIP
      • DRM_CAP_CURSOR_WIDTH
      • DRM_CAP_CURSOR_HEIGHT
      • DRM_CAP_ADDFB2_MODIFIERS
      • DRM_CAP_PAGE_FLIP_TARGET
      • DRM_CAP_CRTC_IN_VBLANK_EVENT
      • DRM_CAP_SYNCOBJ
      • DRM_CAP_SYNCOBJ_TIMELINE
      • DRM_CAP_ATOMIC_ASYNC_PAGE_FLIP
      • DRM_CLIENT_CAP_STEREO_3D
      • DRM_CLIENT_CAP_UNIVERSAL_PLANES
      • DRM_CLIENT_CAP_ATOMIC
      • DRM_CLIENT_CAP_ASPECT_RATIO
      • DRM_CLIENT_CAP_WRITEBACK_CONNECTORS
      • DRM_CLIENT_CAP_CURSOR_PLANE_HOTSPOT
      • DRM_CLIENT_CAP_PLANE_COLOR_PIPELINE
      • drm_syncobj_eventfd
      • DRM_IOCTL_GEM_CLOSE
      • DRM_IOCTL_PRIME_HANDLE_TO_FD
      • DRM_IOCTL_PRIME_FD_TO_HANDLE
      • DRM_IOCTL_MODE_RMFB
      • DRM_IOCTL_MODE_CREATE_DUMB
      • DRM_IOCTL_MODE_GETFB2
      • DRM_IOCTL_MODE_CLOSEFB
      • DRM_IOCTL_SET_CLIENT_NAME
      • DRM_IOCTL_GEM_CHANGE_HANDLE
      • drm_event
      • DRM_EVENT_VBLANK
      • DRM_EVENT_FLIP_COMPLETE
      • DRM_EVENT_CRTC_SEQUENCE
      • drm_mode_modeinfo
      • drm_mode_get_plane
      • drm_mode_get_connector
      • drm_mode_property_enum
      • drm_mode_get_property
      • drm_mode_fb_cmd2
      • drm_colorop_type
      • drm_colorop_lut3d_interpolation_type
      • drm_colorop_lut1d_interpolation_type
      • drm_plane_size_hint
      • hdr_metadata_infoframe
      • hdr_output_metadata
      • DRM_MODE_PAGE_FLIP_EVENT
      • DRM_MODE_PAGE_FLIP_ASYNC
      • DRM_MODE_PAGE_FLIP_FLAGS
      • drm_mode_create_dumb
      • DRM_MODE_ATOMIC_TEST_ONLY
      • DRM_MODE_ATOMIC_NONBLOCK
      • DRM_MODE_ATOMIC_ALLOW_MODESET
      • DRM_MODE_ATOMIC_FLAGS
      • drm_mode_create_blob
      • drm_mode_destroy_blob
      • drm_mode_create_lease
      • drm_mode_list_lessees
      • drm_mode_get_lease
      • drm_mode_revoke_lease
      • drm_mode_rect
      • drm_mode_closefb
  • dma-buf interoperability
  • Trace events
    • Stable uAPI events
• DRM client usage stats
  • File format specification
    • Key types
    • Data types
    • Mandatory fully standardised keys
    • Optional fully standardised keys
      • Identification
      • Utilization
      • Memory
  • Implementation Details
    • Driver specific implementations
• DRM Driver uAPI
  • drm/i915 uAPI
    • i915_user_extension
    • drm_i915_gem_engine_class
    • i915_engine_class_instance
    • drm_i915_getparam
    • drm_i915_getparam_t
    • drm_i915_gem_mmap_offset
    • drm_i915_gem_set_domain
    • drm_i915_gem_exec_fence
    • drm_i915_gem_execbuffer_ext_timeline_fences
    • drm_i915_gem_execbuffer2
    • drm_i915_gem_caching
    • drm_i915_gem_context_create_ext
    • drm_i915_gem_context_param
    • i915_context_engines_parallel_submit
    • drm_i915_gem_context_create_ext_setparam
    • drm_i915_gem_vm_control
    • drm_i915_gem_userptr
    • drm_i915_perf_oa_config
    • drm_i915_query_item
    • drm_i915_query
    • drm_i915_query_topology_info
    • drm_i915_engine_info
    • drm_i915_query_engine_info
    • drm_i915_query_perf_config
    • drm_i915_gem_memory_class
    • drm_i915_gem_memory_class_instance
    • drm_i915_memory_region_info
    • drm_i915_query_memory_regions
    • drm_i915_query_guc_submission_version
    • drm_i915_gem_create_ext
    • drm_i915_gem_create_ext_memory_regions
    • drm_i915_gem_create_ext_protected_content
    • drm_i915_gem_create_ext_set_pat
  • drm/nouveau uAPI
    • VM_BIND / EXEC uAPI
      • drm_nouveau_sync
      • drm_nouveau_vm_init
      • drm_nouveau_vm_bind_op
      • drm_nouveau_vm_bind
      • drm_nouveau_exec_push
      • drm_nouveau_exec
  • drm/panthor uAPI
    • DRM_PANTHOR_USER_MMIO_OFFSET
    • DRM_PANTHOR_USER_FLUSH_ID_MMIO_OFFSET
    • drm_panthor_obj_array
    • DRM_PANTHOR_OBJ_ARRAY
    • drm_panthor_sync_op_flags
    • drm_panthor_sync_op
    • drm_panthor_dev_query_type
    • drm_panthor_gpu_coherency
    • drm_panthor_gpu_info
    • drm_panthor_csif_info
    • drm_panthor_timestamp_info
    • drm_panthor_group_priorities_info
    • drm_panthor_dev_query
    • drm_panthor_vm_create
    • drm_panthor_vm_destroy
    • drm_panthor_vm_bind_op_flags
    • drm_panthor_vm_bind_op
    • drm_panthor_vm_bind_flags
    • drm_panthor_vm_bind
    • drm_panthor_vm_state
    • drm_panthor_vm_get_state
    • drm_panthor_bo_flags
    • drm_panthor_bo_create
    • drm_panthor_bo_mmap_offset
    • drm_panthor_queue_create
    • drm_panthor_group_priority
    • drm_panthor_group_create
    • drm_panthor_group_destroy
    • drm_panthor_queue_submit
    • drm_panthor_group_submit
    • drm_panthor_group_state_flags
    • drm_panthor_group_get_state
    • drm_panthor_tiler_heap_create
    • drm_panthor_tiler_heap_destroy
    • drm_panthor_bo_set_label
    • drm_panthor_set_user_mmio_offset
    • drm_panthor_bo_sync_op_type
    • drm_panthor_bo_sync_op
    • drm_panthor_bo_sync
    • drm_panthor_bo_extra_flags
    • drm_panthor_bo_query_info
    • DRM_IOCTL_PANTHOR
  • drm/xe uAPI
    • drm_xe_user_extension
    • drm_xe_ext_set_property
    • drm_xe_engine_class_instance
    • drm_xe_engine
    • drm_xe_query_engines
    • drm_xe_memory_class
    • drm_xe_mem_region
    • drm_xe_query_mem_regions
    • drm_xe_query_config
    • drm_xe_gt
    • drm_xe_query_gt_list
    • drm_xe_query_topology_mask
    • drm_xe_query_engine_cycles
    • drm_xe_query_uc_fw_version
    • drm_xe_query_pxp_status
    • drm_xe_device_query
    • drm_xe_gem_create
    • drm_xe_gem_mmap_offset
    • drm_xe_vm_create
    • drm_xe_vm_destroy
    • drm_xe_vm_bind_op
    • drm_xe_vm_bind
    • drm_xe_exec_queue_create
    • drm_xe_exec_queue_destroy
    • drm_xe_exec_queue_get_property
    • drm_xe_sync
    • drm_xe_exec
    • drm_xe_wait_user_fence
    • drm_xe_observation_type
    • drm_xe_observation_op
    • drm_xe_observation_param
    • drm_xe_observation_ioctls
    • drm_xe_oa_unit_type
    • drm_xe_oa_unit
    • drm_xe_query_oa_units
    • drm_xe_oa_format_type
    • drm_xe_oa_property_id
    • drm_xe_oa_config
    • drm_xe_oa_stream_status
    • drm_xe_oa_stream_info
    • drm_xe_pxp_session_type
    • drm_xe_eu_stall_property_id
    • drm_xe_query_eu_stall
    • drm_xe_madvise
    • drm_xe_mem_range_attr
    • drm_xe_vm_query_mem_range_attr
    • drm_xe_exec_queue_set_property
  • drm/asahi uAPI
    • drm_asahi_ioctl_id
    • drm_asahi_params_global
    • drm_asahi_feature
    • drm_asahi_get_params
    • drm_asahi_vm_create
    • drm_asahi_vm_destroy
    • drm_asahi_gem_flags
    • drm_asahi_gem_create
    • drm_asahi_gem_mmap_offset
    • drm_asahi_bind_flags
    • drm_asahi_gem_bind_op
    • drm_asahi_vm_bind
    • drm_asahi_bind_object_op
    • drm_asahi_bind_object_flags
    • drm_asahi_gem_bind_object
    • drm_asahi_cmd_type
    • drm_asahi_priority
    • drm_asahi_queue_create
    • drm_asahi_queue_destroy
    • drm_asahi_sync_type
    • drm_asahi_sync
    • DRM_ASAHI_BARRIER_NONE
    • drm_asahi_cmd_header
    • drm_asahi_submit
    • drm_asahi_attachment
    • drm_asahi_zls_buffer
    • drm_asahi_timestamp
    • drm_asahi_timestamps
    • drm_asahi_helper_program
    • drm_asahi_bg_eot
    • drm_asahi_cmd_render
    • drm_asahi_cmd_compute
    • drm_asahi_get_time
    • DRM_IOCTL_ASAHI
• Kernel clients
  • drm_client_funcs
  • drm_client_dev
  • drm_client_buffer
  • drm_client_for_each_modeset
  • drm_client_for_each_connector_iter
  • drm_client_init()
  • drm_client_register()
  • drm_client_release()
  • drm_client_buffer_delete()
  • drm_client_buffer_vmap_local()
  • drm_client_buffer_vunmap_local()
  • drm_client_buffer_vmap()
  • drm_client_buffer_vunmap()
  • drm_client_buffer_create_dumb()
  • drm_client_buffer_flush()
  • drm_client_modeset_probe()
  • drm_client_rotation()
  • drm_client_modeset_check()
  • drm_client_modeset_commit_locked()
  • drm_client_modeset_commit()
  • drm_client_modeset_dpms()
  • drm_client_modeset_wait_for_vblank()
  • drm_client_dev_unregister()
  • drm_client_dev_hotplug()
• Long running workloads and compute
• GPU Driver Documentation
  • drm/amdgpu AMDgpu driver
    • Core Driver Infrastructure
      • GPU Hardware Structure
      • GFX, Compute, and SDMA Overall Behavior
      • Driver Structure
      • Memory Domains
      • Buffer Objects
        • amdgpu_bo_is_amdgpu_bo()
        • amdgpu_bo_placement_from_domain()
        • amdgpu_bo_create_reserved()
        • amdgpu_bo_create_kernel()
        • amdgpu_bo_create_isp_user()
        • amdgpu_bo_create_kernel_at()
        • amdgpu_bo_free_kernel()
        • amdgpu_bo_free_isp_user()
        • amdgpu_bo_create()
        • amdgpu_bo_create_user()
        • amdgpu_bo_create_vm()
        • amdgpu_bo_kmap()
        • amdgpu_bo_kptr()
        • amdgpu_bo_kunmap()
        • amdgpu_bo_ref()
        • amdgpu_bo_unref()
        • amdgpu_bo_pin()
        • amdgpu_bo_unpin()
        • amdgpu_bo_init()
        • amdgpu_bo_fini()
        • amdgpu_bo_set_tiling_flags()
        • amdgpu_bo_get_tiling_flags()
        • amdgpu_bo_set_metadata()
        • amdgpu_bo_get_metadata()
        • amdgpu_bo_move_notify()
        • amdgpu_bo_release_notify()
        • amdgpu_bo_fault_reserve_notify()
        • amdgpu_bo_fence()
        • amdgpu_bo_sync_wait_resv()
        • amdgpu_bo_sync_wait()
        • amdgpu_bo_gpu_offset()
        • amdgpu_bo_fb_aper_addr()
        • amdgpu_bo_gpu_offset_no_check()
        • amdgpu_bo_mem_stats_placement()
        • amdgpu_bo_get_preferred_domain()
        • amdgpu_bo_print_info()
      • PRIME Buffer Sharing
        • dma_buf_attach_adev()
        • amdgpu_dma_buf_attach()
        • amdgpu_dma_buf_pin()
        • amdgpu_dma_buf_unpin()
        • amdgpu_dma_buf_map()
        • amdgpu_dma_buf_unmap()
        • amdgpu_dma_buf_begin_cpu_access()
        • amdgpu_gem_prime_export()
        • amdgpu_dma_buf_create_obj()
        • amdgpu_dma_buf_move_notify()
        • amdgpu_gem_prime_import()
        • amdgpu_dmabuf_is_xgmi_accessible()
      • MMU Notifier
        • amdgpu_hmm_invalidate_gfx()
        • amdgpu_hmm_invalidate_hsa()
        • amdgpu_hmm_register()
        • amdgpu_hmm_unregister()
        • amdgpu_hmm_range_valid()
        • amdgpu_hmm_range_alloc()
        • amdgpu_hmm_range_free()
      • AMDGPU Virtual Memory
        • amdgpu_prt_cb
        • amdgpu_vm_tlb_seq_struct
        • amdgpu_vm_assert_locked()
        • amdgpu_vm_bo_evicted()
        • amdgpu_vm_bo_moved()
        • amdgpu_vm_bo_idle()
        • amdgpu_vm_bo_invalidated()
        • amdgpu_vm_bo_evicted_user()
        • amdgpu_vm_bo_relocated()
        • amdgpu_vm_bo_done()
        • amdgpu_vm_bo_reset_state_machine()
        • amdgpu_vm_update_shared()
        • amdgpu_vm_bo_update_shared()
        • amdgpu_vm_update_stats_locked()
        • amdgpu_vm_update_stats()
        • amdgpu_vm_bo_base_init()
        • amdgpu_vm_lock_pd()
        • amdgpu_vm_lock_done_list()
        • amdgpu_vm_move_to_lru_tail()
        • amdgpu_vm_generation()
        • amdgpu_vm_validate()
        • amdgpu_vm_ready()
        • amdgpu_vm_check_compute_bug()
        • amdgpu_vm_need_pipeline_sync()
        • amdgpu_vm_flush()
        • amdgpu_vm_bo_find()
        • amdgpu_vm_map_gart()
        • amdgpu_vm_update_pdes()
        • amdgpu_vm_tlb_seq_cb()
        • amdgpu_vm_tlb_flush()
        • amdgpu_vm_update_range()
        • amdgpu_vm_bo_update()
        • amdgpu_vm_update_prt_state()
        • amdgpu_vm_prt_get()
        • amdgpu_vm_prt_put()
        • amdgpu_vm_prt_cb()
        • amdgpu_vm_add_prt_cb()
        • amdgpu_vm_free_mapping()
        • amdgpu_vm_prt_fini()
        • amdgpu_vm_clear_freed()
        • amdgpu_vm_handle_moved()
        • amdgpu_vm_flush_compute_tlb()
        • amdgpu_vm_bo_add()
        • amdgpu_vm_bo_insert_map()
        • amdgpu_vm_bo_map()
        • amdgpu_vm_bo_replace_map()
        • amdgpu_vm_bo_unmap()
        • amdgpu_vm_bo_clear_mappings()
        • amdgpu_vm_bo_lookup_mapping()
        • amdgpu_vm_bo_trace_cs()
        • amdgpu_vm_bo_del()
        • amdgpu_vm_evictable()
        • amdgpu_vm_bo_invalidate()
        • amdgpu_vm_bo_move()
        • amdgpu_vm_get_block_size()
        • amdgpu_vm_adjust_size()
        • amdgpu_vm_wait_idle()
        • amdgpu_vm_put_task_info()
        • amdgpu_vm_get_task_info_vm()
        • amdgpu_vm_get_task_info_pasid()
        • amdgpu_vm_set_task_info()
        • amdgpu_vm_init()
        • amdgpu_vm_make_compute()
        • amdgpu_vm_fini()
        • amdgpu_vm_manager_init()
        • amdgpu_vm_manager_fini()
        • amdgpu_vm_ioctl()
        • amdgpu_vm_handle_fault()
        • amdgpu_debugfs_vm_bo_info()
        • amdgpu_vm_update_fault_cache()
        • amdgpu_vm_is_bo_always_valid()
      • Interrupt Handling
        • amdgpu_irq_disable_all()
        • amdgpu_irq_handler()
        • amdgpu_irq_handle_ih1()
        • amdgpu_irq_handle_ih2()
        • amdgpu_irq_handle_ih_soft()
        • amdgpu_msi_ok()
        • amdgpu_irq_init()
        • amdgpu_irq_fini_sw()
        • amdgpu_irq_add_id()
        • amdgpu_irq_dispatch()
        • amdgpu_irq_delegate()
        • amdgpu_irq_update()
        • amdgpu_irq_gpu_reset_resume_helper()
        • amdgpu_irq_get()
        • amdgpu_irq_put()
        • amdgpu_irq_enabled()
        • amdgpu_irqdomain_map()
        • amdgpu_irq_add_domain()
        • amdgpu_irq_remove_domain()
        • amdgpu_irq_create_mapping()
      • IP Blocks
        • amd_ip_block_type
        • DC_FEATURE_MASK
        • DC_DEBUG_MASK
        • amd_ip_funcs
    • Ring Buffer
      • Enforce Isolation
      • Ring Operations
        • amdgpu_ring_max_ibs()
        • amdgpu_ring_alloc()
        • amdgpu_ring_alloc_reemit()
        • amdgpu_ring_insert_nop()
        • amdgpu_ring_generic_pad_ib()
        • amdgpu_ring_commit()
        • amdgpu_ring_undo()
        • amdgpu_ring_init()
        • amdgpu_ring_fini()
        • amdgpu_ring_emit_reg_write_reg_wait_helper()
        • amdgpu_ring_soft_recovery()
        • amdgpu_ring_test_helper()
    • AMD Hardware Components Information per Product
      • Accelerated Processing Units (APU) Info
      • Discrete GPU Info
    • Module Parameters
    • drm/amdgpu - Graphics and Compute (GC)
      • Graphics (GFX) and Compute Microcontrollers
        • MicroEngine Scheduler (MES)
    • drm/amd/display - Display Core (DC)
      • DC Code validation
      • DC Information
        • AMDgpu Display Manager
          • dm_compressor_info
          • dmub_hpd_work
          • vblank_control_work
          • idle_workqueue
          • vupdate_offload_work
          • amdgpu_dm_luminance_data
          • amdgpu_dm_backlight_caps
          • dal_allocation
          • hpd_rx_irq_offload_work_queue
          • hpd_rx_irq_offload_work
          • amdgpu_display_manager
          • amdgpu_hdmi_vsdb_info
          • Lifecycle
            • dm_hw_init()
            • dm_hw_fini()
          • Interrupts
            • amdgpu_dm_irq_handler_data
            • dm_irq_work_func()
            • unregister_all_irq_handlers()
            • amdgpu_dm_irq_register_interrupt()
            • amdgpu_dm_irq_unregister_interrupt()
            • amdgpu_dm_irq_init()
            • amdgpu_dm_irq_fini()
            • amdgpu_dm_irq_handler()
            • amdgpu_dm_hpd_init()
            • amdgpu_dm_hpd_fini()
            • dm_pflip_high_irq()
            • dm_crtc_high_irq()
          • Atomic Implementation
            • amdgpu_dm_atomic_commit_tail()
            • amdgpu_dm_atomic_check()
          • Color Management Properties
            • drm_crtc Properties
            • AMD Private Color Management on drm_plane
            • AMD plane color pipeline
            • amdgpu_dm_init_color_mod()
            • __extract_blob_lut()
            • __extract_blob_lut32()
            • __is_lut_linear()
            • __drm_lut_to_dc_gamma()
            • __drm_lut32_to_dc_gamma()
            • __drm_ctm_to_dc_matrix()
            • __drm_ctm_3x4_to_dc_matrix()
            • __set_legacy_tf()
            • __set_output_tf()
            • __set_output_tf_32()
            • __set_input_tf()
            • __set_input_tf_32()
            • amdgpu_dm_verify_lut3d_size()
            • amdgpu_dm_verify_lut_sizes()
            • amdgpu_dm_check_crtc_color_mgmt()
            • amdgpu_dm_update_crtc_color_mgmt()
            • amdgpu_dm_update_plane_color_mgmt()
            • DC Color Capabilities between DCN generations
              • MAX_SURFACES
              • MAX_PLANES
              • rom_curve_caps
              • dpp_color_caps
              • mpc_color_caps
              • dc_color_caps
              • pipe_split_policy
              • dc_validation_set
              • dc_get_underflow_debug_data_for_otg()
              • dc_capture_register_software_state()
              • dc_get_qos_info()
          • Blend Mode Properties
            • mpcc_blnd_cfg
            • mpcc_alpha_blend_mode
            • Blend configuration flow
        • Display Core Next (DCN)
          • Front End and Back End
          • Data Flow
          • AMD Hardware Pipeline
          • Global Sync
        • DCN Blocks
          • DCHUBBUB
          • HUBP
          • DPP
            • cnv_alpha_2bit_lut
          • MPC
            • mpcc
            • mpc_tree
            • mpc_funcs
          • OPP
            • pwl_float_data
          • DIO
            • can_use_dio_link_hwss()
            • get_dio_link_hwss()
        • DC Programming Model
          • Overview
          • Display Driver Architecture Overview
            • Basic Objects
            • Basic Operations
        • Multiplane Overlay (MPO)
          • Plane Restrictions
          • Cursor Restrictions
          • Use Cases
            • Picture-in-Picture (PIP) playback - Underlay strategy
            • Multiple Display MPO
              • Limitations
        • Display Core Debug tools
          • Narrow down display issues
            • DC dmesg important messages
            • Avoid loading display core
            • Display flickering
            • Display artifacts
          • Disabling/Enabling specific features
          • DC Visual Confirmation
            • Multiple Planes Debug
            • Pipe Split Debug
          • DTN Debug
          • Collect Firmware information
          • DMUB Firmware Debug
            • Trace Groups
        • AMDGPU - Display Contributions
          • Gitlab issues
          • IGT
          • Compilation
            • Fix compilation warnings
            • Fix compilation issues when using um architecture
          • Code Refactor
            • Add prefix to DC functions to improve the debug with ftrace
            • Reduce code duplication
            • Make atomic_commit_[check|tail] more readable
          • Documentation
            • Expand kernel-doc
          • Beyond AMDGPU
            • Enable underlay
            • Adaptive Backlight Modulation (ABM)
            • HDR & Color management & VRR
        • DC Glossary
    • User Mode Queues
      • Introduction
      • Theory of Operation
        • Special Packets
      • Memory Management
      • Interaction with Kernel Queues
      • Queue Resets
      • IOCTL Interfaces
        • INFO
        • USERQ
        • USERQ_SIGNAL
        • USERQ_WAIT
      • Kernel and User Queues
    • dGPU firmware flashing
      • IFWI
      • USB-C PD F/W
      • sysfs files
    • AMDGPU XGMI Support
    • AMDGPU RAS Support
      • RAS debugfs/sysfs Control and Error Injection Interfaces
      • RAS Reboot Behavior for Unrecoverable Errors
      • RAS Error Count sysfs Interface
      • RAS EEPROM debugfs Interface
      • RAS VRAM Bad Pages sysfs Interface
      • Sample Code
    • GPU Power/Thermal Controls and Monitoring
      • HWMON Interfaces
      • GPU sysfs Power State Interfaces
        • power_dpm_state
        • power_dpm_force_performance_level
        • pp_table
        • pp_od_clk_voltage
        • pp_dpm_*
        • pp_power_profile_mode
        • pm_policy
        • *_busy_percent
        • gpu_metrics
        • fan_curve
        • acoustic_limit_rpm_threshold
        • acoustic_target_rpm_threshold
        • fan_target_temperature
        • fan_minimum_pwm
        • fan_zero_rpm_enable
        • fan_zero_rpm_stop_temperature
      • GFXOFF
        • amdgpu_gfxoff
        • amdgpu_gfxoff_status
        • amdgpu_gfxoff_count
        • amdgpu_gfxoff_residency
    • Misc AMDGPU driver information
      • GPU Product Information
        • product_name
        • product_number
        • serial_number
        • fru_id
        • manufacturer
        • unique_id
        • board_info
      • GPU Memory Usage Information
        • mem_info_vram_total
        • mem_info_vram_used
        • mem_info_vis_vram_total
        • mem_info_vis_vram_used
        • mem_info_gtt_total
        • mem_info_gtt_used
      • PCIe Accounting Information
        • pcie_bw
        • pcie_replay_count
      • GPU SmartShift Information
        • smartshift_apu_power
        • smartshift_dgpu_power
        • smartshift_bias
      • UMA Carveout
        • uma/carveout_options
        • uma/carveout
    • GPU Debugging
      • General Debugging Options
      • GPUVM Debugging
      • Decoding a GPUVM Page Fault
      • UMR
      • Debugging backlight brightness
    • AMDGPU DebugFS
      • DebugFS Files
        • amdgpu_benchmark
        • amdgpu_test_ib
        • amdgpu_discovery
        • amdgpu_vbios
        • amdgpu_evict_gtt
        • amdgpu_evict_vram
        • amdgpu_gpu_recover
        • amdgpu_ring_<name>
        • amdgpu_mqd_<name>
        • amdgpu_error_<name>
        • amdgpu_pm_info
        • amdgpu_firmware_info
        • amdgpu_fence_info
        • amdgpu_gem_info
        • amdgpu_vm_info
        • amdgpu_sa_info
        • amdgpu_<pool>_mm
        • amdgpu_vram
        • amdgpu_iomem
        • amdgpu_regs_*
        • amdgpu_regs2
        • amdgpu_sensors
        • amdgpu_gca_config
        • amdgpu_wave
        • amdgpu_gpr
        • amdgpu_gprwave
        • amdgpu_fw_attestation
    • AMDGPU Process Isolation
      • Process Isolation
        • Partition Handling
      • Cleaner Shader Execution
    • AMDGPU Glossary
  • drm/i915 Intel GFX Driver
    • Core Driver Infrastructure
      • Runtime Power Management
        • intel_runtime_pm_get_raw()
        • intel_runtime_pm_get()
        • __intel_runtime_pm_get_if_active()
        • intel_runtime_pm_get_noresume()
        • intel_runtime_pm_put_raw()
        • intel_runtime_pm_put_unchecked()
        • intel_runtime_pm_put()
        • intel_runtime_pm_enable()
        • intel_uncore_forcewake_get()
        • intel_uncore_forcewake_user_get()
        • intel_uncore_forcewake_user_put()
        • intel_uncore_forcewake_get__locked()
        • intel_uncore_forcewake_put()
        • intel_uncore_forcewake_flush()
        • intel_uncore_forcewake_put__locked()
        • __intel_wait_for_register_fw()
        • __intel_wait_for_register()
        • intel_uncore_forcewake_for_reg()
      • Interrupt Handling
        • intel_irq_init()
        • intel_irq_suspend()
        • intel_irq_resume()
      • Intel GVT-g Guest Support(vGPU)
        • intel_vgpu_detect()
        • intel_vgt_deballoon()
        • intel_vgt_balloon()
      • Intel GVT-g Host Support(vGPU device model)
        • intel_gvt_init()
        • intel_gvt_driver_remove()
        • intel_gvt_resume()
      • Workarounds
    • Display Hardware Handling
      • Mode Setting Infrastructure
      • Frontbuffer Tracking
        • intel_frontbuffer_invalidate()
        • intel_frontbuffer_flush()
        • frontbuffer_flush()
        • intel_frontbuffer_flip()
        • intel_frontbuffer_queue_flush()
        • intel_frontbuffer_track()
      • Display FIFO Underrun Reporting
        • intel_set_cpu_fifo_underrun_reporting()
        • intel_set_pch_fifo_underrun_reporting()
        • intel_cpu_fifo_underrun_irq_handler()
        • intel_pch_fifo_underrun_irq_handler()
        • intel_check_cpu_fifo_underruns()
        • intel_check_pch_fifo_underruns()
      • Plane Configuration
      • Atomic Plane Helpers
        • intel_plane_destroy()
        • intel_plane_duplicate_state()
        • intel_plane_destroy_state()
        • intel_prepare_plane_fb()
        • intel_cleanup_plane_fb()
      • Asynchronous Page Flip
      • Output Probing
      • Hotplug
        • intel_hpd_pin_default()
        • intel_hpd_irq_storm_detect()
        • intel_hpd_trigger_irq()
        • intel_hpd_irq_handler()
        • intel_hpd_init()
        • intel_hpd_poll_enable()
        • intel_hpd_poll_disable()
        • intel_hpd_block()
        • intel_hpd_unblock()
        • intel_hpd_clear_and_unblock()
      • High Definition Audio
        • intel_audio_codec_enable()
        • intel_audio_codec_disable()
        • intel_audio_hooks_init()
        • intel_audio_component_init()
        • intel_audio_component_cleanup()
        • intel_audio_init()
        • intel_audio_deinit()
        • i915_audio_component
      • Intel HDMI LPE Audio Support
        • intel_lpe_audio_irq_handler()
        • intel_lpe_audio_init()
        • intel_lpe_audio_teardown()
        • intel_lpe_audio_notify()
      • Panel Self Refresh PSR (PSR/SRD)
        • intel_psr_disable()
        • intel_psr_pause()
        • intel_psr_resume()
        • intel_psr_needs_vblank_notification()
        • intel_psr_trigger_frame_change_event()
        • intel_psr_min_set_context_latency()
        • intel_psr_wait_for_idle_locked()
        • intel_psr_invalidate()
        • intel_psr_flush()
        • intel_psr_init()
        • intel_psr_link_ok()
        • intel_psr_lock()
        • intel_psr_unlock()
        • intel_psr_notify_dc5_dc6()
        • intel_psr_dc5_dc6_wa_init()
        • intel_psr_notify_pipe_change()
        • intel_psr_notify_vblank_enable_disable()
      • Frame Buffer Compression (FBC)
        • intel_fbc_disable()
        • intel_fbc_handle_fifo_underrun_irq()
        • intel_fbc_read_underrun_dbg_info()
        • intel_fbc_init()
        • intel_fbc_sanitize()
      • Display Refresh Rate Switching (DRRS)
        • intel_drrs_activate()
        • intel_drrs_deactivate()
        • intel_drrs_invalidate()
        • intel_drrs_flush()
        • intel_drrs_crtc_init()
      • DPIO
      • DMC Firmware Support
        • intel_dmc_block_pkgc()
        • intel_dmc_start_pkgc_exit_at_start_of_undelayed_vblank()
        • intel_dmc_load_program()
        • intel_dmc_disable_program()
        • intel_dmc_init()
        • intel_dmc_suspend()
        • intel_dmc_resume()
        • intel_dmc_fini()
      • DMC Flip Queue
      • DMC wakelock support
      • Video BIOS Table (VBT)
        • intel_bios_is_valid_vbt()
        • intel_bios_init()
        • intel_bios_driver_remove()
        • intel_bios_is_tv_present()
        • intel_bios_is_lvds_present()
        • intel_bios_is_port_present()
        • intel_bios_is_dsi_present()
        • vbt_header
        • bdb_header
      • Display clocks
        • intel_cdclk_init_hw()
        • intel_cdclk_uninit_hw()
        • intel_cdclk_clock_changed()
        • intel_cdclk_can_cd2x_update()
        • intel_cdclk_changed()
        • intel_set_cdclk_pre_plane_update()
        • intel_set_cdclk_post_plane_update()
        • intel_update_max_cdclk()
        • intel_update_cdclk()
        • intel_read_rawclk()
        • intel_init_cdclk_hooks()
      • Display PLLs
        • intel_get_dpll_by_id()
        • intel_dpll_enable()
        • intel_dpll_disable()
        • intel_dpll_crtc_get()
        • intel_dpll_crtc_put()
        • intel_dpll_swap_state()
        • icl_set_active_port_dpll()
        • intel_dpll_init()
        • intel_dpll_compute()
        • intel_dpll_reserve()
        • intel_dpll_release()
        • intel_dpll_update_active()
        • intel_dpll_get_freq()
        • intel_dpll_get_hw_state()
        • intel_dpll_dump_hw_state()
        • intel_dpll_compare_hw_state()
        • intel_dpll_id
        • intel_dpll_state
        • dpll_info
        • intel_dpll
      • Display State Buffer
        • intel_dsb_reg_write_indexed()
        • intel_dsb_commit()
        • intel_dsb_prepare()
        • intel_dsb_cleanup()
    • GT Programming
      • Multicast/Replicated (MCR) Registers
        • intel_gt_mcr_lock()
        • intel_gt_mcr_unlock()
        • intel_gt_mcr_lock_sanitize()
        • intel_gt_mcr_read()
        • intel_gt_mcr_unicast_write()
        • intel_gt_mcr_multicast_write()
        • intel_gt_mcr_multicast_write_fw()
        • intel_gt_mcr_multicast_rmw()
        • intel_gt_mcr_get_nonterminated_steering()
        • intel_gt_mcr_read_any_fw()
        • intel_gt_mcr_read_any()
        • intel_gt_mcr_get_ss_steering()
        • intel_gt_mcr_wait_for_reg()
    • Memory Management and Command Submission
      • Intel GPU Basics
      • Locking Guidelines
      • GEM BO Management Implementation Details
      • Buffer Object Eviction
        • i915_gem_evict_something()
        • i915_gem_evict_for_node()
        • i915_gem_evict_vm()
      • Buffer Object Memory Shrinking
        • i915_gem_shrink()
        • i915_gem_shrink_all()
        • i915_gem_object_make_unshrinkable()
        • __i915_gem_object_make_shrinkable()
        • __i915_gem_object_make_purgeable()
        • i915_gem_object_make_shrinkable()
        • i915_gem_object_make_purgeable()
      • Batchbuffer Parsing
        • intel_engine_init_cmd_parser()
        • intel_engine_cleanup_cmd_parser()
        • intel_engine_cmd_parser()
        • i915_cmd_parser_get_version()
      • User Batchbuffer Execution
        • i915_gem_engines
        • i915_gem_engines_iter
        • i915_gem_engine_type
        • i915_gem_proto_engine
        • i915_gem_proto_context
        • i915_gem_context
      • Scheduling
        • i915_sched_engine
      • Logical Rings, Logical Ring Contexts and Execlists
      • Global GTT views
        • i915_gem_gtt_reserve()
        • i915_gem_gtt_insert()
      • GTT Fences and Swizzling
        • i915_vma_revoke_fence()
        • i915_vma_pin_fence()
        • i915_reserve_fence()
        • i915_unreserve_fence()
        • intel_ggtt_restore_fences()
        • detect_bit_6_swizzle()
        • i915_gem_object_do_bit_17_swizzle()
        • i915_gem_object_save_bit_17_swizzle()
        • Global GTT Fence Handling
        • Hardware Tiling and Swizzling Details
      • Object Tiling IOCTLs
        • i915_gem_fence_size()
        • i915_gem_fence_alignment()
        • i915_gem_set_tiling_ioctl()
        • i915_gem_get_tiling_ioctl()
      • Protected Objects
        • intel_pxp
    • Microcontrollers
      • WOPCM
        • WOPCM Layout
      • GuC
        • intel_guc
        • intel_guc_ggtt_offset()
        • GuC Firmware Layout
        • GuC Memory Management
          • intel_guc_allocate_vma()
        • GuC-specific firmware loader
          • intel_guc_fw_upload()
        • GuC-based command submission
        • GuC ABI
      • HuC
        • intel_huc_auth()
        • HuC Memory Management
        • HuC Firmware Layout
      • DMC
    • Tracing
      • i915_ppgtt_create and i915_ppgtt_release
      • i915_context_create and i915_context_free
    • Perf
      • Overview
      • Comparison with Core Perf
        • Issues hit with first prototype based on Core Perf
      • i915 Driver Entry Points
        • i915_perf_init()
        • i915_perf_fini()
        • i915_perf_register()
        • i915_perf_unregister()
        • i915_perf_open_ioctl()
        • i915_perf_release()
        • i915_perf_add_config_ioctl()
        • i915_perf_remove_config_ioctl()
      • i915 Perf Stream
        • i915_perf_stream
        • i915_perf_stream_ops
        • read_properties_unlocked()
        • i915_perf_open_ioctl_locked()
        • i915_perf_destroy_locked()
        • i915_perf_read()
        • i915_perf_ioctl()
        • i915_perf_enable_locked()
        • i915_perf_disable_locked()
        • i915_perf_poll()
        • i915_perf_poll_locked()
      • i915 Perf Observation Architecture Stream
        • i915_oa_ops
        • i915_oa_stream_init()
        • i915_oa_read()
        • i915_oa_stream_enable()
        • i915_oa_stream_disable()
        • i915_oa_wait_unlocked()
        • i915_oa_poll_wait()
      • Other i915 Perf Internals
        • perf_open_properties
        • oa_buffer_check_unlocked()
        • append_oa_status()
        • append_oa_sample()
        • gen8_append_oa_reports()
        • gen8_oa_read()
        • gen7_append_oa_reports()
        • gen7_oa_read()
        • oa_get_render_ctx_id()
        • oa_put_render_ctx_id()
        • i915_perf_ioctl_locked()
        • i915_perf_ioctl_version()
    • Style
      • Register macro definition style
        • File Layout
        • Naming
        • Examples
    • i915 DRM client usage stats implementation
  • drm/imagination PowerVR Graphics Driver
    • Contents
      • UAPI
        • OBJECT ARRAYS
          • drm_pvr_obj_array
          • DRM_PVR_OBJ_ARRAY
        • IOCTLS
          • PVR_IOCTL
          • DEV_QUERY
            • drm_pvr_dev_query
            • drm_pvr_ioctl_dev_query_args
            • drm_pvr_dev_query_gpu_info
            • drm_pvr_dev_query_runtime_info
            • drm_pvr_dev_query_quirks
            • drm_pvr_dev_query_enhancements
            • drm_pvr_heap_id
            • drm_pvr_heap
            • drm_pvr_dev_query_heap_info
            • drm_pvr_static_data_area_usage
            • drm_pvr_static_data_area
            • drm_pvr_dev_query_static_data_areas
          • CREATE_BO
            • drm_pvr_ioctl_create_bo_args
          • GET_BO_MMAP_OFFSET
            • drm_pvr_ioctl_get_bo_mmap_offset_args
          • CREATE_VM_CONTEXT and DESTROY_VM_CONTEXT
            • drm_pvr_ioctl_create_vm_context_args
            • drm_pvr_ioctl_destroy_vm_context_args
          • VM_MAP and VM_UNMAP
            • drm_pvr_ioctl_vm_map_args
            • drm_pvr_ioctl_vm_unmap_args
          • CREATE_CONTEXT and DESTROY_CONTEXT
            • drm_pvr_ioctl_create_context_args
            • drm_pvr_ctx_priority
            • drm_pvr_ctx_type
            • drm_pvr_ioctl_destroy_context_args
          • CREATE_FREE_LIST and DESTROY_FREE_LIST
            • drm_pvr_ioctl_create_free_list_args
            • drm_pvr_ioctl_destroy_free_list_args
          • CREATE_HWRT_DATASET and DESTROY_HWRT_DATASET
            • drm_pvr_ioctl_create_hwrt_dataset_args
            • drm_pvr_create_hwrt_geom_data_args
            • drm_pvr_create_hwrt_rt_data_args
            • drm_pvr_ioctl_destroy_hwrt_dataset_args
          • SUBMIT_JOBS
            • DRM_PVR_SYNC_OP_HANDLE_TYPE_MASK
            • DRM_PVR_SYNC_OP_FLAG_HANDLE_TYPE_SYNCOBJ
            • DRM_PVR_SYNC_OP_FLAG_HANDLE_TYPE_TIMELINE_SYNCOBJ
            • DRM_PVR_SYNC_OP_FLAG_SIGNAL
            • DRM_PVR_SYNC_OP_FLAG_WAIT
            • drm_pvr_ioctl_submit_jobs_args
            • DRM_PVR_SUBMIT_JOB_GEOM_CMD_FIRST
            • DRM_PVR_SUBMIT_JOB_GEOM_CMD_LAST
            • DRM_PVR_SUBMIT_JOB_GEOM_CMD_SINGLE_CORE
            • DRM_PVR_SUBMIT_JOB_GEOM_CMD_FLAGS_MASK
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_SINGLE_CORE
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_DEPTHBUFFER
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_STENCILBUFFER
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_PREVENT_CDM_OVERLAP
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_GET_VIS_RESULTS
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_SCRATCHBUFFER
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_DISABLE_PIXELMERGE
            • DRM_PVR_SUBMIT_JOB_FRAG_CMD_FLAGS_MASK
            • DRM_PVR_SUBMIT_JOB_COMPUTE_CMD_PREVENT_ALL_OVERLAP
            • DRM_PVR_SUBMIT_JOB_COMPUTE_CMD_SINGLE_CORE
            • DRM_PVR_SUBMIT_JOB_COMPUTE_CMD_FLAGS_MASK
            • DRM_PVR_SUBMIT_JOB_TRANSFER_CMD_SINGLE_CORE
            • DRM_PVR_SUBMIT_JOB_TRANSFER_CMD_FLAGS_MASK
            • drm_pvr_sync_op
            • drm_pvr_job_type
            • drm_pvr_hwrt_data_ref
            • drm_pvr_job
        • Internal notes
          • pvr_ioctl_union_padding_check()
          • PVR_STATIC_ASSERT_64BIT_ALIGNED
          • PVR_IOCTL_UNION_PADDING_CHECK
  • drm/mcde ST-Ericsson MCDE Multi-channel display engine
  • drm/meson AmLogic Meson Video Processing Unit
    • Video Processing Unit
    • Video Input Unit
    • Video Post Processing
    • Video Encoder
    • Video Clocks
    • HDMI Video Output
  • drm/nouveau NVIDIA GPU Driver
    • NVKM: NVIDIA Kernel Manager
      • GSP Support
  • drm/pl111 ARM PrimeCell PL110 and PL111 CLCD Driver
  • drm/tegra NVIDIA Tegra GPU and display driver
    • Driver Infrastructure
      • Host1x Infrastructure Reference
        • host1x_bo_cache
        • host1x_client_ops
        • host1x_client
        • host1x_driver
        • host1x_device_init()
        • host1x_device_exit()
        • host1x_driver_register_full()
        • host1x_driver_unregister()
        • __host1x_client_init()
        • host1x_client_exit()
        • __host1x_client_register()
        • host1x_client_unregister()
      • Host1x Syncpoint Reference
        • host1x_syncpt_alloc()
        • host1x_syncpt_id()
        • host1x_syncpt_incr_max()
        • host1x_syncpt_incr()
        • host1x_syncpt_wait()
        • host1x_syncpt_request()
        • host1x_syncpt_put()
        • host1x_syncpt_read_max()
        • host1x_syncpt_read_min()
        • host1x_syncpt_read()
        • host1x_syncpt_get_by_id()
        • host1x_syncpt_get_by_id_noref()
        • host1x_syncpt_get()
        • host1x_syncpt_get_base()
        • host1x_syncpt_base_id()
        • host1x_syncpt_release_vblank_reservation()
    • KMS driver
      • Display Controllers
        • Windows
      • Outputs
        • RGB/LVDS
        • HDMI
        • DSI
        • eDP/DP
    • Userspace Interface
      • GEM Buffers
      • Syncpoints
      • Command Stream Submission
  • drm/tve200 Faraday TV Encoder 200
  • drm/v3d Broadcom V3D Graphics Driver
    • GPU buffer object (BO) management
      • Address space management
      • GPU Scheduling
    • Interrupts
  • drm/vc4 Broadcom VC4 Graphics Driver
    • Display Hardware Handling
      • Pixel Valve (DRM CRTC)
      • HVS
      • HVS planes
      • HDMI encoder
      • DSI encoder
      • DPI encoder
      • VEC (Composite TV out) encoder
    • KUnit Tests
    • Memory Management and 3D Command Submission
      • GPU buffer object (BO) management
      • V3D binner command list (BCL) validation
      • V3D render command list (RCL) generation
      • Shader validator for VC4
      • V3D Interrupts
  • drm/vkms Virtual Kernel Modesetting
    • Setup
    • Configuring With Configfs
    • Testing With IGT
    • Testing With KUnit
    • TODO
      • IGT better support
      • Add Plane Features
      • Runtime Configuration
      • Writeback support
      • Output Features
      • CRC API Improvements
      • Atomic Check using eBPF
  • drm/bridge/dw-hdmi Synopsys DesignWare HDMI Controller
    • Synopsys DesignWare HDMI Controller
      • Supported Input Formats and Encodings
  • drm/xen-front Xen para-virtualized frontend driver
    • Driver modes of operation in terms of display buffers used
      • Buffers allocated by the frontend driver
      • Buffers allocated by the backend
    • Driver limitations
  • drm/xe Intel GFX Driver
    • Memory Management
      • BO management
      • BO creation
        • Kernel BOs
        • User BOs
          • Private BOs
          • External BOs
          • BO placement
      • BO validation
      • BO eviction / moving
        • Runtime eviction
        • Rebinds after runtime eviction
        • Suspend / resume eviction of VRAM
        • Rebinds after suspend / resume
      • Future work
      • GGTT
        • GGTT Internal API
          • xe_ggtt
          • xe_ggtt_pt_ops
          • xe_ggtt_node
          • xe_ggtt_start()
          • xe_ggtt_size()
          • xe_ggtt_alloc()
          • xe_ggtt_init_early()
          • xe_ggtt_node_remove()
          • xe_ggtt_init()
          • xe_ggtt_node_insert_balloon_locked()
          • xe_ggtt_node_remove_balloon_locked()
          • xe_ggtt_shift_nodes_locked()
          • xe_ggtt_node_insert()
          • xe_ggtt_node_init()
          • xe_ggtt_node_fini()
          • xe_ggtt_node_allocated()
          • xe_ggtt_node_pt_size()
          • xe_ggtt_map_bo()
          • xe_ggtt_map_bo_unlocked()
          • xe_ggtt_node_insert_transform()
          • xe_ggtt_insert_bo_at()
          • xe_ggtt_insert_bo()
          • xe_ggtt_remove_bo()
          • xe_ggtt_largest_hole()
          • xe_ggtt_assign()
          • xe_ggtt_node_save()
          • xe_ggtt_node_load()
          • xe_ggtt_dump()
          • xe_ggtt_print_holes()
          • xe_ggtt_encode_pte_flags()
          • xe_ggtt_read_pte()
          • xe_ggtt_node_addr()
          • xe_ggtt_node_size()
      • Pagetable building
    • Map Layer
    • Migrate Layer
      • Special VM details
      • Bind jobs
      • Copy / clear jobs
      • Future work
    • Execution Queue
      • Multi Queue Group
      • Multi Queue Group GuC interface
      • Internal API
        • xe_multi_queue_priority
        • xe_exec_queue_group
        • xe_exec_queue
        • xe_exec_queue_ops
        • xe_exec_queue_is_multi_queue()
        • xe_exec_queue_is_multi_queue_primary()
        • xe_exec_queue_is_multi_queue_secondary()
        • xe_exec_queue_multi_queue_primary()
        • xe_exec_queue_idle_skip_suspend()
        • xe_exec_queue_create_bind()
        • xe_exec_queue_lrc()
        • xe_exec_queue_is_lr()
        • xe_exec_queue_is_idle()
        • xe_exec_queue_update_run_ticks()
        • xe_exec_queue_kill()
        • xe_exec_queue_last_fence_put()
        • xe_exec_queue_last_fence_put_unlocked()
        • xe_exec_queue_last_fence_get()
        • xe_exec_queue_last_fence_get_for_resume()
        • xe_exec_queue_last_fence_set()
        • xe_exec_queue_tlb_inval_last_fence_put()
        • xe_exec_queue_tlb_inval_last_fence_put_unlocked()
        • xe_exec_queue_tlb_inval_last_fence_get()
        • xe_exec_queue_tlb_inval_last_fence_set()
        • xe_exec_queue_contexts_hwsp_rebase()
    • Command submission
      • Flow
    • Runtime Power Management
      • Internal API
        • xe_pm_might_block_on_suspend()
        • xe_pm_block_on_suspend()
        • xe_rpm_reclaim_safe()
        • xe_pm_suspend()
        • xe_pm_resume()
        • xe_pm_init()
        • xe_pm_fini()
        • xe_pm_runtime_suspended()
        • xe_pm_runtime_suspend()
        • xe_pm_runtime_resume()
        • xe_pm_runtime_get()
        • xe_pm_runtime_put()
        • xe_pm_runtime_get_ioctl()
        • xe_pm_runtime_get_if_active()
        • xe_pm_runtime_get_if_in_use()
        • xe_pm_runtime_get_noresume()
        • xe_pm_runtime_resume_and_get()
        • xe_pm_assert_unbounded_bridge()
        • xe_pm_set_vram_threshold()
        • xe_pm_d3cold_allowed_toggle()
        • xe_pm_module_init()
    • Xe GT Frequency Management
      • Internal API
        • xe_gt_freq_init()
    • Pcode
      • Internal API
        • xe_pcode_request()
        • xe_pcode_init_min_freq_table()
        • xe_pcode_ready()
        • xe_pcode_init()
        • xe_pcode_probe_early()
    • Survivability Mode
      • Boot Survivability
      • Runtime Survivability
    • GT Multicast/Replicated (MCR) Register Support
      • Internal API
    • Hardware workarounds
      • Internal API
        • xe_wa_process_device_oob()
        • xe_wa_process_gt_oob()
        • xe_wa_process_gt()
        • xe_wa_process_engine()
        • xe_wa_process_lrc()
        • xe_wa_device_init()
        • xe_wa_gt_init()
        • xe_wa_gt_dump()
    • Register Table Processing
      • Internal API
        • xe_rtp_action
        • XE_RTP_RULE_PLATFORM
        • XE_RTP_RULE_SUBPLATFORM
        • XE_RTP_RULE_GRAPHICS_STEP
        • XE_RTP_RULE_MEDIA_STEP
        • XE_RTP_RULE_ENGINE_CLASS
        • XE_RTP_RULE_FUNC
        • XE_RTP_RULE_GRAPHICS_VERSION
        • XE_RTP_RULE_GRAPHICS_VERSION_RANGE
        • XE_RTP_RULE_GRAPHICS_VERSION_ANY_GT
        • XE_RTP_RULE_MEDIA_VERSION
        • XE_RTP_RULE_MEDIA_VERSION_RANGE
        • XE_RTP_RULE_MEDIA_VERSION_ANY_GT
        • XE_RTP_RULE_IS_INTEGRATED
        • XE_RTP_RULE_IS_DISCRETE
        • XE_RTP_RULE_OR
        • XE_RTP_ACTION_WR
        • XE_RTP_ACTION_SET
        • XE_RTP_ACTION_CLR
        • XE_RTP_ACTION_FIELD_SET
        • XE_RTP_ACTION_WHITELIST
        • XE_RTP_NAME
        • XE_RTP_ENTRY_FLAG
        • XE_RTP_ACTION_FLAG
        • XE_RTP_RULES
        • XE_RTP_ACTIONS
        • xe_rtp_match_even_instance()
        • xe_rtp_match_has_flat_ccs()
        • xe_rtp_process_ctx_enable_active_tracking()
        • xe_rtp_process_to_sr()
        • xe_rtp_process()
    • Firmware
      • Firmware Layout
      • Write Once Protected Content Memory (WOPCM) Layout
      • GuC CTB Blob
      • GuC Power Conservation (PC)
        • Frequency management:
        • Render-C States:
      • PCIe Gen5 Limitations
      • Internal API
    • Multi-tile Devices
      • Internal API
        • xe_tile_alloc()
        • xe_tile_alloc_vram()
        • xe_tile_init_early()
        • xe_tile_init_noalloc()
        • xe_tile_local_pagemap()
    • Debugging
      • xe_assert
      • xe_tile_assert
      • xe_gt_assert
    • Xe Device Coredump
      • Internal API
        • xe_devcoredump_read()
        • xe_devcoredump()
        • xe_print_blob_ascii85()
    • Xe Device Wedging
      • Case: Firmware Flash
        • Identification Hint
        • Recovery Procedure
    • Xe DRM client usage stats implementation
    • Xe Configfs
      • Overview
      • Create devices
      • Configure Attributes
        • Survivability mode:
        • Allowed GT types:
        • Allowed engines:
        • PSMI
        • Context restore BB
        • Max SR-IOV Virtual Functions
      • Remove devices
      • Internal API
        • xe_configfs_check_device()
        • xe_configfs_get_survivability_mode()
        • xe_configfs_primary_gt_allowed()
        • xe_configfs_media_gt_allowed()
        • xe_configfs_get_engines_allowed()
        • xe_configfs_get_psmi_enabled()
        • xe_configfs_get_ctx_restore_mid_bb()
        • xe_configfs_get_ctx_restore_post_bb()
        • xe_configfs_get_max_vfs()
  • Arm Framebuffer Compression (AFBC)
    • Components and Ordering
    • Number of Planes
    • Cross-device interoperability
  • drm/komeda Arm display driver
    • Overview of D71 like display IPs
      • Layer
      • Scaler
      • Compositor (compiz)
      • Writeback Layer (wb_layer)
      • Post image processor (improc)
      • Timing controller (timing_ctrlr)
      • Merger
      • Splitter
    • Possible D71 Pipeline usage
      • Single pipeline data flow
      • Dual pipeline with Slave enabled
      • Sub-pipelines for input and output
        • Layer(input) pipeline
        • Writeback(output) pipeline
        • Display output pipeline
    • Komeda Resource abstraction
      • struct komeda_pipeline/component
        • komeda_component
        • komeda_component_output
        • komeda_component_state
        • komeda_pipeline
        • komeda_pipeline_state
    • Resource discovery and initialization
      • komeda_dev_funcs
      • komeda_dev
    • Format handling
      • komeda_format_caps
      • komeda_format_caps_table
      • komeda_fb
    • Attach komeda_dev to DRM-KMS
      • How to map plane to Layer(input) pipeline
      • Make component/pipeline to be drm_private_obj
      • Tracking component_state/pipeline_state by drm_atomic_state
      • komeda component validation
      • komeda_kms Abstraction
        • komeda_plane
        • komeda_plane_state
        • komeda_wb_connector
        • komeda_crtc
        • komeda_crtc_state
      • komde_kms Functions
        • komeda_crtc_atomic_check()
        • komeda_plane_atomic_check()
    • Build komeda to be a Linux module driver
  • drm/Panfrost Mali Driver
    • Panfrost DRM client usage stats implementation
  • drm/Panthor CSF driver
    • Panthor DRM client usage stats implementation
  • Xilinx ZynqMP Ultrascale+ DisplayPort Subsystem
    • debugfs
    • Internals
      • zynqmp_dpsub_layer_id
      • zynqmp_dpsub
      • zynqmp_dpsub_drm
      • zynqmp_dpsub_layer_mode
      • zynqmp_disp_format
      • zynqmp_disp_layer_dma
      • zynqmp_disp_layer_info
      • zynqmp_disp_layer
      • zynqmp_disp
      • zynqmp_disp_avbuf_set_format()
      • zynqmp_disp_avbuf_set_clocks_sources()
      • zynqmp_disp_avbuf_enable_channels()
      • zynqmp_disp_avbuf_disable_channels()
      • zynqmp_disp_avbuf_enable_audio()
      • zynqmp_disp_avbuf_disable_audio()
      • zynqmp_disp_avbuf_enable_video()
      • zynqmp_disp_avbuf_disable_video()
      • zynqmp_disp_avbuf_enable()
      • zynqmp_disp_avbuf_disable()
      • zynqmp_disp_blend_set_output_format()
      • zynqmp_disp_blend_set_bg_color()
      • zynqmp_disp_blend_set_global_alpha()
      • zynqmp_disp_blend_layer_set_csc()
      • zynqmp_disp_blend_layer_enable()
      • zynqmp_disp_blend_layer_disable()
      • zynqmp_disp_layer_find_format()
      • zynqmp_disp_layer_find_live_format()
      • zynqmp_disp_layer_drm_formats()
      • zynqmp_disp_live_layer_formats()
      • zynqmp_disp_layer_enable()
      • zynqmp_disp_layer_disable()
      • zynqmp_disp_layer_set_format()
      • zynqmp_disp_layer_set_live_format()
      • zynqmp_disp_layer_update()
      • zynqmp_disp_layer_release_dma()
      • zynqmp_disp_destroy_layers()
      • zynqmp_disp_layer_request_dma()
      • zynqmp_disp_create_layers()
      • zynqmp_disp_enable()
      • zynqmp_disp_disable()
      • zynqmp_disp_setup_clock()
      • zynqmp_dp_link_config
      • zynqmp_dp_mode
      • zynqmp_dp_config
      • test_pattern
      • zynqmp_dp_test
      • zynqmp_dp_train_set_priv
      • zynqmp_dp
      • zynqmp_dp_phy_init()
      • zynqmp_dp_phy_exit()
      • zynqmp_dp_phy_probe()
      • zynqmp_dp_phy_ready()
      • zynqmp_dp_max_rate()
      • zynqmp_dp_mode_configure()
      • zynqmp_dp_adjust_train()
      • zynqmp_dp_update_vs_emph()
      • zynqmp_dp_link_train_cr()
      • zynqmp_dp_link_train_ce()
      • zynqmp_dp_setup()
      • zynqmp_dp_train()
      • zynqmp_dp_train_loop()
      • zynqmp_dp_aux_cmd_submit()
      • zynqmp_dp_aux_init()
      • zynqmp_dp_aux_cleanup()
      • zynqmp_dp_update_misc()
      • zynqmp_dp_set_format()
      • zynqmp_dp_encoder_mode_set_transfer_unit()
      • zynqmp_dp_encoder_mode_set_stream()
      • zynqmp_dp_disp_connected_live_layer()
      • zynqmp_dp_set_test_pattern()
      • zynqmp_dp_enable_vblank()
      • zynqmp_dp_disable_vblank()
      • zynqmp_dpsub_drm_handle_vblank()
  • nova NVIDIA GPU drivers
    • Guidelines
      • Language
        • Style
      • Documentation
      • Acceptance Criteria
    • nova-core
      • Guidelines
        • Driver API
        • Acceptance Criteria
      • Task List
        • Enablement (Rust)
          • FromPrimitive API [FPRI]
          • Generic register abstraction [REGA]
          • Numerical operations [NUMM]
          • Page abstraction for foreign pages
          • PCI MISC APIs
        • GPU (general)
          • Initial Devinit support
          • MMU / PT management
          • VRAM memory allocator
          • Instance Memory
        • GPU System Processor (GSP)
          • Export GSP log buffers
          • GSP firmware abstraction
          • GSP message queue
          • Bootstrap GSP
          • Client / Device APIs
          • Bar PDE handling
          • FIFO engine
          • GR engine
          • CE engine
          • VFN IRQ controller
        • External APIs
          • nova-core base API
          • vGPU manager API
          • nova-core C API
        • Testing
          • CI pipeline
      • VBIOS
        • VBIOS ROM Layout
        • Falcon data Lookup
      • Device Initialization (devinit)
        • Key Functions of devinit
        • Low-level Firmware Initialization Flow
        • Runtime Considerations
        • Security and Access Control
      • FWSEC (Firmware Security)
        • FWSEC Memory Layout
      • Falcon (FAst Logic Controller)
        • Falcon security levels
          • Heavy Secured (HS) also known as Privilege Level 3 (PL3)
          • Light Secured (LS or PL2) and Non Secured (NS or PL0)
          • Root of trust establishment
        • Falcon memory subsystem and DMA engine
• Backlight support
  • backlight_update_reason
  • backlight_type
  • backlight_ops
  • backlight_properties
  • backlight_device
  • backlight_update_status()
  • backlight_enable()
  • backlight_disable()
  • backlight_is_blank()
  • backlight_get_brightness()
  • bl_get_data()
  • backlight_force_update()
  • backlight_device_get_by_name()
  • devm_backlight_device_register()
  • devm_backlight_device_unregister()
  • of_find_backlight_by_node()
  • devm_of_find_backlight()
• VGA Switcheroo
  • Modes of Use
    • Manual switching and manual power control
    • Driver power control
  • API
    • Public functions
      • vga_switcheroo_register_handler()
      • vga_switcheroo_unregister_handler()
      • vga_switcheroo_handler_flags()
      • vga_switcheroo_register_client()
      • vga_switcheroo_register_audio_client()
      • vga_switcheroo_client_probe_defer()
      • vga_switcheroo_get_client_state()
      • vga_switcheroo_unregister_client()
      • vga_switcheroo_client_fb_set()
      • vga_switcheroo_lock_ddc()
      • vga_switcheroo_unlock_ddc()
      • vga_switcheroo_process_delayed_switch()
      • vga_switcheroo_init_domain_pm_ops()
    • Public structures
      • vga_switcheroo_handler
      • vga_switcheroo_client_ops
    • Public constants
      • vga_switcheroo_handler_flags_t
      • vga_switcheroo_client_id
      • vga_switcheroo_state
    • Private structures
      • vgasr_priv
      • vga_switcheroo_client
  • Handlers
    • apple-gmux Handler
      • Graphics mux
      • Power control
      • Backlight control
      • Public functions
        • apple_gmux_detect()
        • apple_gmux_present()
• VGA Arbiter
  • vgaarb kernel/userspace ABI
  • In-kernel interface
    • vga_get_interruptible()
    • vga_get_uninterruptible()
    • vga_default_device()
    • vga_remove_vgacon()
    • vga_get()
    • vga_put()
    • vga_set_legacy_decoding()
    • vga_client_register()
  • libpciaccess
  • xf86VGAArbiter (X server implementation)
  • References
• Automated testing of the DRM subsystem
  • Introduction
  • Relevant files
    • drivers/gpu/drm/ci/gitlab-ci.yml
    • drivers/gpu/drm/ci/testlist.txt
    • drivers/gpu/drm/ci/${DRIVER_NAME}-${HW_REVISION}-fails.txt
    • drivers/gpu/drm/ci/${DRIVER_NAME}-${HW_REVISION}-flakes.txt
    • drivers/gpu/drm/ci/${DRIVER_NAME}-${HW_REVISION}-skips.txt
  • How to enable automated testing on your tree
  • How to update test expectations
  • How to expand coverage
  • How to test your changes to the scripts
  • How to incorporate external fixes in your testing
  • How to deal with automated testing labs that may be down
• Misc DRM driver uAPI- and feature implementation guidelines
  • Asynchronous VM_BIND
    • Nomenclature:
    • Synchronous / Asynchronous VM_BIND operation
      • Synchronous VM_BIND
      • Asynchronous VM_BIND
    • Multi-operation VM_BIND IOCTL error handling and interrupts
    • Example: The Xe VM_BIND uAPI
  • VM_BIND locking
    • The DRM GPUVM set of helpers
    • Nomenclature
    • Locks and locking order
    • Protection and lifetime of gpu_vm_bos and gpu_vmas
    • Revalidation and eviction of local objects
      • Revalidation
      • Eviction
    • Locking with external buffer objects
    • Accessing the gpu_vm’s lists without the dma_resv lock held
    • userptr gpu_vmas
      • Efficient userptr gpu_vma exec_function iteration
    • Locking at bind and unbind time
    • Locking for recoverable page-fault page-table updates
• TODO list
  • Difficulty
    • Subsystem-wide refactorings
  • Remove custom dumb_map_offset implementations
  • Convert existing KMS drivers to atomic modesetting
  • Clean up the clipped coordination confusion around planes
  • Improve plane atomic_check helpers
  • Convert early atomic drivers to async commit helpers
  • Rename drm_atomic_state
  • Fallout from atomic KMS
  • Move Buffer Object Locking to dma_resv_lock()
  • Convert logging to drm_* functions with drm_device parameter
  • Convert drivers to use simple modeset suspend/resume
  • Reimplement functions in drm_fbdev_fb_ops without fbdev
  • Benchmark and optimize blitting and format-conversion function
  • drm_framebuffer_funcs and drm_mode_config_funcs.fb_create cleanup
  • Generic fbdev defio support
  • connector register/unregister fixes
  • Remove load/unload callbacks
  • Replace drm_detect_hdmi_monitor() with drm_display_info.is_hdmi
  • Consolidate custom driver modeset properties
  • Use struct iosys_map throughout codebase
  • Review all drivers for setting struct drm_mode_config.{max_width,max_height} correctly
  • Request memory regions in all fbdev drivers
  • Remove driver dependencies on FB_DEVICE
  • Remove disable/unprepare in remove/shutdown in panel-simple and panel-edp
  • Transition away from using deprecated MIPI DSI functions
  • Remove devm_drm_put_bridge()
  • Convert users of of_drm_find_bridge() to of_drm_find_and_get_bridge()
    • Core refactorings
  • Make panic handling work
  • Clean up the debugfs support
  • Object lifetime fixes
  • Remove automatic page mapping from dma-buf importing
  • Implement a new DUMB_CREATE2 ioctl
    • Better Testing
  • Add unit tests using the Kernel Unit Testing (KUnit) framework
  • Clean up and document former selftests suites
  • Enable trinity for DRM
  • Make KMS tests in i-g-t generic
  • Extend virtual test driver (VKMS)
  • Backlight Refactoring
    • Driver Specific
  • AMD DC Display Driver
    • Bootsplash
    • Brightness handling on devices with multiple internal panels
    • Buffer age or other damage accumulation algorithm for buffer damage
    • Querying errors from drm_syncobj
    • DRM GPU Scheduler
  • Provide a universal successor for drm_sched_resubmit_jobs()
  • Add locking for runqueues
    • Outside DRM
  • Convert fbdev drivers to DRM
• GPU RFC Section
  • GPU SVM Section
    • Agreed upon design principles
    • Overview of baseline design
    • Overview of drm_pagemap design
    • Possible future design features
  • I915 DG1/LMEM RFC Section
    • Upstream plan
  • I915 GuC Submission/DRM Scheduler Section
    • Upstream plan
    • TODOs for GuC submission upstream
    • New uAPI for basic GuC submission
      • Spec references:
    • New parallel submission uAPI
      • Export engines logical mapping
      • A ‘set_parallel’ extension to configure contexts for parallel submission
        • i915_context_engines_parallel_submit
      • Extend execbuf2 IOCTL to support submitting N BBs in a single IOCTL
  • I915 Small BAR RFC Section
    • I915_GEM_CREATE_EXT_FLAG_NEEDS_CPU_ACCESS flag
      • __drm_i915_gem_create_ext
    • probed_cpu_visible_size attribute
      • __drm_i915_memory_region_info
    • Error Capture restrictions
  • I915 VM_BIND feature design and use cases
    • VM_BIND feature
      • TLB flush consideration
      • Execbuf ioctl in VM_BIND mode
      • VM_PRIVATE objects
      • VM_BIND locking hierarchy
      • VM_BIND LRU handling
      • VM_BIND dma_resv usage
      • Mesa use case
    • Other VM_BIND use cases
      • Long running Compute contexts
        • User/Memory Fence
        • Low Latency Submission
      • Debugger
      • GPU page faults
      • Page level hints settings
      • Page level Cache/CLOS settings
      • Evictable page table allocations
      • Shared Virtual Memory (SVM) support
    • VM_BIND UAPI
      • drm_i915_gem_timeline_fence
      • drm_i915_gem_vm_bind
      • drm_i915_gem_vm_unbind
      • drm_i915_gem_execbuffer3
      • drm_i915_gem_create_ext_vm_private
  • Linux Color Pipeline API
    • What problem are we solving?
    • How are other OSes solving this problem?
    • Why is Linux different?
    • Descriptive API
    • Prescriptive API
    • The Color Pipeline API
    • drm_colorop Object
      • drm_colorop extensibility
    • COLOR_PIPELINE Plane Property
    • Color Pipeline Discovery
    • Color Pipeline Programming
    • Driver Implementer’s Guide
    • Driver Forward/Backward Compatibility
    • References