drivers/misc/c2port/core.c

File Facts

System

Linux kernel

Corpus path

drivers/misc/c2port/core.c

Extension

.c

Size

22227 bytes

Lines

1012

Domain

Driver Families

Bucket

drivers/misc

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/module.h
• linux/init.h
• linux/device.h
• linux/errno.h
• linux/err.h
• linux/kernel.h
• linux/ctype.h
• linux/delay.h
• linux/idr.h
• linux/sched.h
• linux/slab.h
• linux/c2port.h

Detected Declarations

• function c2port_reset
• function c2port_strobe_ck
• function c2port_write_ar
• function c2port_read_ar
• function c2port_write_dr
• function c2port_read_dr
• function c2port_poll_in_busy
• function c2port_poll_out_ready
• function c2port_show_name
• function c2port_show_flash_blocks_num
• function c2port_show_flash_block_size
• function c2port_show_flash_size
• function access_show
• function access_store
• function c2port_store_reset
• function __c2port_show_dev_id
• function c2port_show_dev_id
• function __c2port_show_rev_id
• function c2port_show_rev_id
• function c2port_show_flash_access
• function __c2port_store_flash_access
• function c2port_store_flash_access
• function __c2port_write_flash_erase
• function c2port_store_flash_erase
• function __c2port_read_flash_data
• function c2port_read_flash_data
• function __c2port_write_flash_data
• function c2port_write_flash_data
• function c2port_bin_attr_size
• function c2port_device_unregister
• function c2port_init
• function c2port_exit
• module init c2port_init
• export c2port_device_register
• export c2port_device_unregister

Annotated Snippet

module_init(c2port_init);
module_exit(c2port_exit);

MODULE_AUTHOR("Rodolfo Giometti <giometti@linux.it>");
MODULE_DESCRIPTION("Silicon Labs C2 port support v. " DRIVER_VERSION);
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/device.h`, `linux/errno.h`, `linux/err.h`, `linux/kernel.h`, `linux/ctype.h`, `linux/delay.h`.
• Detected declarations: `function c2port_reset`, `function c2port_strobe_ck`, `function c2port_write_ar`, `function c2port_read_ar`, `function c2port_write_dr`, `function c2port_read_dr`, `function c2port_poll_in_busy`, `function c2port_poll_out_ready`, `function c2port_show_name`, `function c2port_show_flash_blocks_num`.
• Atlas domain: Driver Families / drivers/misc.
• 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.