drivers/media/test-drivers/vivid/vivid-core.c

File Facts

System

Linux kernel

Corpus path

drivers/media/test-drivers/vivid/vivid-core.c

Extension

.c

Size

75519 bytes

Lines

2341

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/module.h
• linux/errno.h
• linux/kernel.h
• linux/init.h
• linux/sched.h
• linux/slab.h
• linux/vmalloc.h
• linux/font.h
• linux/mutex.h
• linux/platform_device.h
• linux/videodev2.h
• linux/v4l2-dv-timings.h
• media/videobuf2-vmalloc.h
• media/videobuf2-dma-contig.h
• media/v4l2-dv-timings.h
• media/v4l2-ioctl.h
• media/v4l2-fh.h
• media/v4l2-event.h
• vivid-core.h
• vivid-vid-common.h
• vivid-vid-cap.h
• vivid-vid-out.h
• vivid-radio-common.h
• vivid-radio-rx.h
• vivid-radio-tx.h
• vivid-sdr-cap.h
• vivid-vbi-cap.h
• vivid-vbi-out.h
• vivid-osd.h
• vivid-cec.h
• vivid-ctrls.h
• vivid-meta-cap.h

Detected Declarations

• function vidioc_querycap
• function vidioc_s_hw_freq_seek
• function vidioc_enum_freq_bands
• function vidioc_g_tuner
• function vidioc_s_tuner
• function vidioc_g_frequency
• function vidioc_s_frequency
• function vidioc_overlay
• function vidioc_g_fbuf
• function vidioc_s_fbuf
• function vidioc_s_std
• function vidioc_s_dv_timings
• function vidioc_g_pixelaspect
• function vidioc_g_selection
• function vidioc_s_selection
• function vidioc_g_parm
• function vidioc_s_parm
• function vidioc_log_status
• function vivid_radio_read
• function vivid_radio_write
• function vivid_radio_poll
• function vivid_enum_input
• function vivid_g_input
• function vivid_s_input
• function vivid_enum_fmt_cap
• function vivid_g_fmt_cap
• function vivid_try_fmt_cap
• function vivid_s_fmt_cap
• function vivid_g_fmt_cap_mplane
• function vivid_try_fmt_cap_mplane
• function vivid_s_fmt_cap_mplane
• function vivid_is_in_use
• function vivid_is_last_user
• function vivid_reconnect
• function vivid_fop_release
• function vivid_is_last_user
• function vidioc_reqbufs
• function vidioc_create_bufs
• function vivid_dev_release
• function vivid_req_validate
• function vivid_create_queue
• function vivid_detect_feature_set
• function vivid_set_capabilities
• function vivid_disable_unused_ioctls
• function vivid_init_dv_timings
• function vivid_create_queues
• function vivid_create_devnodes
• function update_hdmi_ctrls_work_handler

Annotated Snippet

module_init(vivid_init);
module_exit(vivid_exit);

Annotation

• Immediate include surface: `linux/module.h`, `linux/errno.h`, `linux/kernel.h`, `linux/init.h`, `linux/sched.h`, `linux/slab.h`, `linux/vmalloc.h`, `linux/font.h`.
• Detected declarations: `function vidioc_querycap`, `function vidioc_s_hw_freq_seek`, `function vidioc_enum_freq_bands`, `function vidioc_g_tuner`, `function vidioc_s_tuner`, `function vidioc_g_frequency`, `function vidioc_s_frequency`, `function vidioc_overlay`, `function vidioc_g_fbuf`, `function vidioc_s_fbuf`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.