drivers/media/pci/pt3/pt3.c

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/pt3/pt3.c

Extension

.c

Size

18256 bytes

Lines

808

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.
• 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/freezer.h
• linux/kernel.h
• linux/kthread.h
• linux/mutex.h
• linux/module.h
• linux/pci.h
• linux/string.h
• linux/sched/signal.h
• media/dmxdev.h
• media/dvbdev.h
• media/dvb_demux.h
• media/dvb_frontend.h
• pt3.h

Detected Declarations

• struct reg_val
• function pt3_demod_write
• function pt3_lnb_ctrl
• function module
• function pt3_set_lna
• function pt3_set_voltage
• function IC
• function pt3_attach_fe
• function pt3_fetch_thread
• function pt3_start_streaming
• function pt3_stop_streaming
• function pt3_start_feed
• function pt3_stop_feed
• function pt3_alloc_adapter
• function pt3_cleanup_adapter
• function pt3_suspend
• function pt3_resume
• function pt3_remove
• function pt3_probe

Annotated Snippet

static struct pci_driver pt3_driver = {
	.name		= DRV_NAME,
	.probe		= pt3_probe,
	.remove		= pt3_remove,
	.id_table	= pt3_id_table,

	.driver.pm	= &pt3_pm_ops,
};

module_pci_driver(pt3_driver);

MODULE_DESCRIPTION("Earthsoft PT3 Driver");
MODULE_AUTHOR("Akihiro TSUKADA");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/freezer.h`, `linux/kernel.h`, `linux/kthread.h`, `linux/mutex.h`, `linux/module.h`, `linux/pci.h`, `linux/string.h`, `linux/sched/signal.h`.
• Detected declarations: `struct reg_val`, `function pt3_demod_write`, `function pt3_lnb_ctrl`, `function module`, `function pt3_set_lna`, `function pt3_set_voltage`, `function IC`, `function pt3_attach_fe`, `function pt3_fetch_thread`, `function pt3_start_streaming`.
• 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.

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.