drivers/i2c/busses/i2c-thunderx-pcidrv.c

File Facts

System

Linux kernel

Corpus path

drivers/i2c/busses/i2c-thunderx-pcidrv.c

Extension

.c

Size

6773 bytes

Lines

278

Domain

Driver Families

Bucket

drivers/i2c

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/acpi.h
• linux/clk.h
• linux/delay.h
• linux/i2c.h
• linux/i2c-smbus.h
• linux/interrupt.h
• linux/kernel.h
• linux/module.h
• linux/of_irq.h
• linux/pci.h
• i2c-octeon-core.h

Detected Declarations

• function Copyright
• function thunder_i2c_int_disable
• function thunder_i2c_hlc_int_enable
• function thunder_i2c_hlc_int_disable
• function thunderx_i2c_functionality
• function thunder_i2c_clock_enable
• function thunder_i2c_clock_disable
• function thunder_i2c_smbus_setup_of
• function thunder_i2c_smbus_setup
• function thunder_i2c_smbus_remove
• function thunder_i2c_probe_pci
• function thunder_i2c_remove_pci

Annotated Snippet

static struct pci_driver thunder_i2c_pci_driver = {
	.name		= DRV_NAME,
	.id_table	= thunder_i2c_pci_id_table,
	.probe		= thunder_i2c_probe_pci,
	.remove		= thunder_i2c_remove_pci,
};

module_pci_driver(thunder_i2c_pci_driver);

MODULE_LICENSE("GPL");
MODULE_AUTHOR("Fred Martin <fmartin@caviumnetworks.com>");
MODULE_DESCRIPTION("I2C-Bus adapter for Cavium ThunderX SOC");

Annotation

• Immediate include surface: `linux/acpi.h`, `linux/clk.h`, `linux/delay.h`, `linux/i2c.h`, `linux/i2c-smbus.h`, `linux/interrupt.h`, `linux/kernel.h`, `linux/module.h`.
• Detected declarations: `function Copyright`, `function thunder_i2c_int_disable`, `function thunder_i2c_hlc_int_enable`, `function thunder_i2c_hlc_int_disable`, `function thunderx_i2c_functionality`, `function thunder_i2c_clock_enable`, `function thunder_i2c_clock_disable`, `function thunder_i2c_smbus_setup_of`, `function thunder_i2c_smbus_setup`, `function thunder_i2c_smbus_remove`.
• Atlas domain: Driver Families / drivers/i2c.
• 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.