drivers/media/pci/cx18/cx18-video.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/cx18/cx18-video.c

Extension

.c

Size

396 bytes

Lines

19

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: implementation source

Status

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

Dependency Surface

• cx18-driver.h
• cx18-video.h
• cx18-cards.h

Detected Declarations

• function Copyright

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 *  cx18 video interface functions
 *
 *  Copyright (C) 2007  Hans Verkuil <hverkuil@kernel.org>
 */

#include "cx18-driver.h"
#include "cx18-video.h"
#include "cx18-cards.h"

void cx18_video_set_io(struct cx18 *cx)
{
	int inp = cx->active_input;

	v4l2_subdev_call(cx->sd_av, video, s_routing,
			cx->card->video_inputs[inp].video_input, 0, 0);
}

Annotation

• Immediate include surface: `cx18-driver.h`, `cx18-video.h`, `cx18-cards.h`.
• Detected declarations: `function Copyright`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: source 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.