drivers/mfd/cgbc-core.c

File Facts

System

Linux kernel

Corpus path

drivers/mfd/cgbc-core.c

Extension

.c

Size

10335 bytes

Lines

430

Domain

Driver Families

Bucket

drivers/mfd

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/dmi.h
• linux/iopoll.h
• linux/mfd/cgbc.h
• linux/mfd/core.h
• linux/module.h
• linux/platform_device.h
• linux/sysfs.h

Detected Declarations

• function cgbc_wait_device
• function cgbc_session_command
• function cgbc_session_request
• function cgbc_session_release
• function cgbc_command_lock
• function cgbc_command_unlock
• function cgbc_command
• function cgbc_map
• function cgbc_version_show
• function cgbc_get_version
• function cgbc_init_device
• function cgbc_probe
• function cgbc_remove
• function cgbc_init
• function cgbc_exit
• module init cgbc_init
• export cgbc_command

Annotated Snippet

module_init(cgbc_init);
module_exit(cgbc_exit);

MODULE_DESCRIPTION("Congatec Board Controller Core Driver");
MODULE_AUTHOR("Thomas Richard <thomas.richard@bootlin.com>");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:cgbc-core");

Annotation

• Immediate include surface: `linux/dmi.h`, `linux/iopoll.h`, `linux/mfd/cgbc.h`, `linux/mfd/core.h`, `linux/module.h`, `linux/platform_device.h`, `linux/sysfs.h`.
• Detected declarations: `function cgbc_wait_device`, `function cgbc_session_command`, `function cgbc_session_request`, `function cgbc_session_release`, `function cgbc_command_lock`, `function cgbc_command_unlock`, `function cgbc_command`, `function cgbc_map`, `function cgbc_version_show`, `function cgbc_get_version`.
• Atlas domain: Driver Families / drivers/mfd.
• 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.