drivers/media/usb/cx231xx/cx231xx-dvb.c

File Facts

System

Linux kernel

Corpus path

drivers/media/usb/cx231xx/cx231xx-dvb.c

Extension

.c

Size

29744 bytes

Lines

1176

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.
• 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

• cx231xx.h
• linux/kernel.h
• linux/slab.h
• media/dvbdev.h
• media/dmxdev.h
• media/dvb_demux.h
• media/dvb_net.h
• media/dvb_frontend.h
• media/v4l2-common.h
• media/tuner.h
• xc5000.h
• s5h1432.h
• tda18271.h
• s5h1411.h
• lgdt3305.h
• si2165.h
• si2168.h
• mb86a20s.h
• si2157.h
• lgdt3306a.h
• r820t.h
• mn88473.h

Detected Declarations

• struct cx231xx_dvb
• function print_err_status
• function dvb_isoc_copy
• function dvb_bulk_copy
• function start_streaming
• function stop_streaming
• function start_feed
• function stop_feed
• function cx231xx_dvb_bus_ctrl
• function attach_xc5000
• function cx231xx_set_analog_freq
• function cx231xx_reset_analog_tuner
• function register_dvb
• function unregister_dvb
• function dvb_init
• function dvb_fini
• function cx231xx_dvb_register
• function cx231xx_dvb_unregister
• module init cx231xx_dvb_register

Annotated Snippet

module_init(cx231xx_dvb_register);
module_exit(cx231xx_dvb_unregister);

Annotation

• Immediate include surface: `cx231xx.h`, `linux/kernel.h`, `linux/slab.h`, `media/dvbdev.h`, `media/dmxdev.h`, `media/dvb_demux.h`, `media/dvb_net.h`, `media/dvb_frontend.h`.
• Detected declarations: `struct cx231xx_dvb`, `function print_err_status`, `function dvb_isoc_copy`, `function dvb_bulk_copy`, `function start_streaming`, `function stop_streaming`, `function start_feed`, `function stop_feed`, `function cx231xx_dvb_bus_ctrl`, `function attach_xc5000`.
• Atlas domain: Driver Families / drivers/media.
• Implementation status: integration 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.