drivers/spi/spi-dw-pci.c

File Facts

System

Linux kernel

Corpus path

drivers/spi/spi-dw-pci.c

Extension

.c

Size

5110 bytes

Lines

209

Domain

Driver Families

Bucket

drivers/spi

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/pci.h
• linux/pm_runtime.h
• linux/slab.h
• linux/spi/spi.h
• linux/module.h
• spi-dw.h

Detected Declarations

• struct dw_spi_pci_desc
• function dw_spi_pci_mid_init
• function dw_spi_pci_generic_init
• function dw_spi_pci_probe
• function dw_spi_pci_remove
• function dw_spi_pci_suspend
• function dw_spi_pci_resume

Annotated Snippet

static struct pci_driver dw_spi_pci_driver = {
	.name =		DRIVER_NAME,
	.id_table =	dw_spi_pci_ids,
	.probe =	dw_spi_pci_probe,
	.remove =	dw_spi_pci_remove,
	.driver         = {
		.pm     = &dw_spi_pci_pm_ops,
	},
};
module_pci_driver(dw_spi_pci_driver);

MODULE_AUTHOR("Feng Tang <feng.tang@intel.com>");
MODULE_DESCRIPTION("PCI interface driver for DW SPI Core");
MODULE_LICENSE("GPL v2");
MODULE_IMPORT_NS("SPI_DW_CORE");

Annotation

• Immediate include surface: `linux/pci.h`, `linux/pm_runtime.h`, `linux/slab.h`, `linux/spi/spi.h`, `linux/module.h`, `spi-dw.h`.
• Detected declarations: `struct dw_spi_pci_desc`, `function dw_spi_pci_mid_init`, `function dw_spi_pci_generic_init`, `function dw_spi_pci_probe`, `function dw_spi_pci_remove`, `function dw_spi_pci_suspend`, `function dw_spi_pci_resume`.
• Atlas domain: Driver Families / drivers/spi.
• 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.