drivers/comedi/drivers/amplc_pci224.c

File Facts

System

Linux kernel

Corpus path

drivers/comedi/drivers/amplc_pci224.c

Extension

.c

Size

34455 bytes

Lines

1142

Domain

Driver Families

Bucket

drivers/comedi

Inferred role

Driver Families: operation-table or driver-model contract

Status

pattern 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.
• Defines an operation table; this is where Linux turns generic core objects into subsystem-specific behavior.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Touches IRQ or DMA behavior; this matters for the representative real-device path.
• 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/interrupt.h
• linux/slab.h
• linux/comedi/comedi_pci.h
• linux/comedi/comedi_8254.h

Detected Declarations

• struct pci224_board
• struct pci224_private
• enum pci224_model
• function reference
• function pci224_gat_config
• function pci224_ao_set_data
• function pci224_ao_insn_write
• function pci224_ao_stop
• function routine
• function pci224_ao_start
• function pci224_ao_handle_fifo
• function pci224_ao_inttrig_start
• function pci224_ao_check_chanlist
• function pci224_ao_cmdtest
• function pci224_ao_start_pacer
• function pci224_ao_cmd
• function pci224_ao_cancel
• function pci224_ao_munge
• function pci224_interrupt
• function pci224_auto_attach
• function pci224_detach
• function amplc_pci224_pci_probe

Annotated Snippet

static struct pci_driver amplc_pci224_pci_driver = {
	.name		= "amplc_pci224",
	.id_table	= amplc_pci224_pci_table,
	.probe		= amplc_pci224_pci_probe,
	.remove		= comedi_pci_auto_unconfig,
};
module_comedi_pci_driver(amplc_pci224_driver, amplc_pci224_pci_driver);

MODULE_AUTHOR("Comedi https://www.comedi.org");
MODULE_DESCRIPTION("Comedi driver for Amplicon PCI224 and PCI234 AO boards");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/interrupt.h`, `linux/slab.h`, `linux/comedi/comedi_pci.h`, `linux/comedi/comedi_8254.h`.
• Detected declarations: `struct pci224_board`, `struct pci224_private`, `enum pci224_model`, `function reference`, `function pci224_gat_config`, `function pci224_ao_set_data`, `function pci224_ao_insn_write`, `function pci224_ao_stop`, `function routine`, `function pci224_ao_start`.
• Atlas domain: Driver Families / drivers/comedi.
• Implementation status: pattern implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.