drivers/tty/vcc.c

File Facts

System

Linux kernel

Corpus path

drivers/tty/vcc.c

Extension

.c

Size

22781 bytes

Lines

1092

Domain

Driver Families

Bucket

drivers/tty

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

• linux/delay.h
• linux/interrupt.h
• linux/module.h
• linux/slab.h
• linux/sysfs.h
• linux/tty.h
• linux/tty_flip.h
• linux/termios_internal.h
• asm/vio.h
• asm/ldc.h

Detected Declarations

• struct vcc_port
• function vcc_table_add
• function vcc_table_remove
• function vcc_get
• function vcc_put
• function vcc_get_ne
• function vcc_kick_rx
• function vcc_kick_tx
• function vcc_rx_check
• function vcc_rx
• function vcc_ldc_read
• function vcc_rx_timer
• function vcc_tx_timer
• function vcc_event
• function domain_show
• function vcc_send_ctl
• function break_store
• function vcc_probe
• function vcc_remove
• function vcc_open
• function vcc_close
• function vcc_ldc_hup
• function vcc_hangup
• function vcc_write
• function vcc_write_room
• function vcc_chars_in_buffer
• function vcc_break_ctl
• function vcc_install
• function vcc_cleanup
• function vcc_tty_init
• function vcc_tty_exit
• function vcc_init
• function vcc_exit
• module init vcc_init

Annotated Snippet

module_init(vcc_init);
module_exit(vcc_exit);

Annotation

• Immediate include surface: `linux/delay.h`, `linux/interrupt.h`, `linux/module.h`, `linux/slab.h`, `linux/sysfs.h`, `linux/tty.h`, `linux/tty_flip.h`, `linux/termios_internal.h`.
• Detected declarations: `struct vcc_port`, `function vcc_table_add`, `function vcc_table_remove`, `function vcc_get`, `function vcc_put`, `function vcc_get_ne`, `function vcc_kick_rx`, `function vcc_kick_tx`, `function vcc_rx_check`, `function vcc_rx`.
• Atlas domain: Driver Families / drivers/tty.
• 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.