drivers/media/pci/saa7134/saa7134-empress.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/saa7134/saa7134-empress.c

Extension

.c

Size

9790 bytes

Lines

347

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• saa7134.h
• saa7134-reg.h
• linux/init.h
• linux/list.h
• linux/module.h
• linux/kernel.h
• linux/delay.h
• media/v4l2-common.h
• media/v4l2-event.h

Detected Declarations

• function start_streaming
• function stop_streaming
• function empress_enum_fmt_vid_cap
• function empress_g_fmt_vid_cap
• function empress_s_fmt_vid_cap
• function empress_try_fmt_vid_cap
• function empress_signal_update
• function empress_signal_change
• function empress_ctrl_filter
• function empress_init
• function empress_fini
• function empress_register
• function empress_unregister
• module init empress_register

Annotated Snippet

module_init(empress_register);
module_exit(empress_unregister);

Annotation

• Immediate include surface: `saa7134.h`, `saa7134-reg.h`, `linux/init.h`, `linux/list.h`, `linux/module.h`, `linux/kernel.h`, `linux/delay.h`, `media/v4l2-common.h`.
• Detected declarations: `function start_streaming`, `function stop_streaming`, `function empress_enum_fmt_vid_cap`, `function empress_g_fmt_vid_cap`, `function empress_s_fmt_vid_cap`, `function empress_try_fmt_vid_cap`, `function empress_signal_update`, `function empress_signal_change`, `function empress_ctrl_filter`, `function empress_init`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: integration implementation candidate.

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.