drivers/media/pci/tw5864/tw5864-core.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/tw5864/tw5864-core.c

Extension

.c

Size

9843 bytes

Lines

337

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/init.h
• linux/list.h
• linux/module.h
• linux/kernel.h
• linux/slab.h
• linux/kmod.h
• linux/sound.h
• linux/interrupt.h
• linux/delay.h
• linux/dma-mapping.h
• linux/pm.h
• linux/pci_ids.h
• linux/jiffies.h
• asm/dma.h
• media/v4l2-dev.h
• tw5864.h
• tw5864-reg.h

Detected Declarations

• function tw5864_irqmask_apply
• function tw5864_interrupts_disable
• function tw5864_isr
• function tw5864_h264_isr
• function tw5864_input_deadline_update
• function tw5864_timer_isr
• function tw5864_initdev
• function tw5864_finidev

Annotated Snippet

static struct pci_driver tw5864_pci_driver = {
	.name = DRIVER_NAME,
	.id_table = tw5864_pci_tbl,
	.probe = tw5864_initdev,
	.remove = tw5864_finidev,
};

module_pci_driver(tw5864_pci_driver);

Annotation

• Immediate include surface: `linux/init.h`, `linux/list.h`, `linux/module.h`, `linux/kernel.h`, `linux/slab.h`, `linux/kmod.h`, `linux/sound.h`, `linux/interrupt.h`.
• Detected declarations: `function tw5864_irqmask_apply`, `function tw5864_interrupts_disable`, `function tw5864_isr`, `function tw5864_h264_isr`, `function tw5864_input_deadline_update`, `function tw5864_timer_isr`, `function tw5864_initdev`, `function tw5864_finidev`.
• 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.