drivers/platform/x86/intel/ehl_pse_io.c

File Facts

System

Linux kernel

Corpus path

drivers/platform/x86/intel/ehl_pse_io.c

Extension

.c

Size

2083 bytes

Lines

87

Domain

Driver Families

Bucket

drivers/platform

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.
• 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/auxiliary_bus.h
• linux/device/devres.h
• linux/errno.h
• linux/gfp_types.h
• linux/ioport.h
• linux/mod_devicetable.h
• linux/module.h
• linux/pci.h
• linux/sizes.h
• linux/types.h
• linux/ehl_pse_io_aux.h

Detected Declarations

• function Engine
• function ehl_pse_io_probe

Annotated Snippet

static struct pci_driver ehl_pse_io_driver = {
	.name		= EHL_PSE_IO_NAME,
	.id_table	= ehl_pse_io_ids,
	.probe		= ehl_pse_io_probe,
};
module_pci_driver(ehl_pse_io_driver);

MODULE_AUTHOR("Raag Jadav <raag.jadav@intel.com>");
MODULE_DESCRIPTION("Intel Elkhart Lake PSE I/O driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/auxiliary_bus.h`, `linux/device/devres.h`, `linux/errno.h`, `linux/gfp_types.h`, `linux/ioport.h`, `linux/mod_devicetable.h`, `linux/module.h`, `linux/pci.h`.
• Detected declarations: `function Engine`, `function ehl_pse_io_probe`.
• Atlas domain: Driver Families / drivers/platform.
• Implementation status: pattern implementation candidate.
• 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.