drivers/media/rc/rc-loopback.c

Source file repositories/reference/linux-study-clean/drivers/media/rc/rc-loopback.c

File Facts

System: Linux kernel
Corpus path: drivers/media/rc/rc-loopback.c
Extension: .c
Size: 6420 bytes
Lines: 275
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.
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/device.h
linux/module.h
linux/sched.h
linux/slab.h
media/rc-core.h

Detected Declarations

struct loopback_dev
function loop_set_tx_mask
function loop_set_tx_carrier
function loop_set_tx_duty_cycle
function loop_set_rx_carrier_range
function loop_tx_ir
function loop_set_idle
function loop_set_wideband_receiver
function loop_set_carrier_report
function loop_set_wakeup_filter
function loop_init
function loop_exit
module init loop_init

Annotated Snippet

module_init(loop_init);
module_exit(loop_exit);

MODULE_DESCRIPTION("Loopback device for rc-core debugging");
MODULE_AUTHOR("David Härdeman <david@hardeman.nu>");
MODULE_LICENSE("GPL");

Annotation

Immediate include surface: `linux/device.h`, `linux/module.h`, `linux/sched.h`, `linux/slab.h`, `media/rc-core.h`.
Detected declarations: `struct loopback_dev`, `function loop_set_tx_mask`, `function loop_set_tx_carrier`, `function loop_set_tx_duty_cycle`, `function loop_set_rx_carrier_range`, `function loop_tx_ir`, `function loop_set_idle`, `function loop_set_wideband_receiver`, `function loop_set_carrier_report`, `function loop_set_wakeup_filter`.
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.