drivers/media/pci/dt3155/dt3155.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/dt3155/dt3155.c

Extension

.c

Size

17483 bytes

Lines

598

Domain

Driver Families

Bucket

drivers/media

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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 an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/stringify.h
• linux/delay.h
• linux/kthread.h
• linux/slab.h
• media/v4l2-dev.h
• media/v4l2-ioctl.h
• media/v4l2-common.h
• media/videobuf2-dma-contig.h
• dt3155.h

Detected Declarations

• function Copyright
• function specified
• function specified
• function wait_i2c_reg
• function dt3155_queue_setup
• function dt3155_buf_prepare
• function dt3155_start_streaming
• function dt3155_stop_streaming
• function dt3155_buf_queue
• function dt3155_irq_handler_even
• function dt3155_querycap
• function dt3155_enum_fmt_vid_cap
• function dt3155_fmt_vid_cap
• function dt3155_g_std
• function dt3155_s_std
• function dt3155_enum_input
• function dt3155_g_input
• function dt3155_s_input
• function dt3155_init_board
• function dt3155_probe
• function dt3155_remove

Annotated Snippet

static struct pci_driver pci_driver = {
	.name = DT3155_NAME,
	.id_table = pci_ids,
	.probe = dt3155_probe,
	.remove = dt3155_remove,
};

module_pci_driver(pci_driver);

MODULE_DESCRIPTION("video4linux pci-driver for dt3155 frame grabber");
MODULE_AUTHOR("Marin Mitov <mitov@issp.bas.bg>");
MODULE_VERSION(DT3155_VERSION);
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/stringify.h`, `linux/delay.h`, `linux/kthread.h`, `linux/slab.h`, `media/v4l2-dev.h`, `media/v4l2-ioctl.h`, `media/v4l2-common.h`.
• Detected declarations: `function Copyright`, `function specified`, `function specified`, `function wait_i2c_reg`, `function dt3155_queue_setup`, `function dt3155_buf_prepare`, `function dt3155_start_streaming`, `function dt3155_stop_streaming`, `function dt3155_buf_queue`, `function dt3155_irq_handler_even`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.