drivers/i2c/busses/i2c-nvidia-gpu.c

File Facts

System

Linux kernel

Corpus path

drivers/i2c/busses/i2c-nvidia-gpu.c

Extension

.c

Size

9782 bytes

Lines

376

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/delay.h
• linux/i2c.h
• linux/interrupt.h
• linux/iopoll.h
• linux/module.h
• linux/pci.h
• linux/platform_device.h
• linux/pm.h
• linux/pm_runtime.h
• linux/power_supply.h
• linux/unaligned.h
• i2c-ccgx-ucsi.h

Detected Declarations

• struct gpu_i2c_dev
• function gpu_enable_i2c_bus
• function gpu_i2c_check_status
• function gpu_i2c_read
• function gpu_i2c_start
• function gpu_i2c_stop
• function gpu_i2c_write
• function gpu_i2c_xfer
• function gpu_i2c_functionality
• function gpu_i2c_probe
• function gpu_i2c_remove
• function gpu_i2c_resume

Annotated Snippet

static struct pci_driver gpu_i2c_driver = {
	.name		= "nvidia-gpu",
	.id_table	= gpu_i2c_ids,
	.probe		= gpu_i2c_probe,
	.remove		= gpu_i2c_remove,
	.driver		= {
		.pm	= &gpu_i2c_driver_pm,
	},
};

module_pci_driver(gpu_i2c_driver);

MODULE_AUTHOR("Ajay Gupta <ajayg@nvidia.com>");
MODULE_DESCRIPTION("Nvidia GPU I2C controller Driver");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/i2c.h`, `linux/interrupt.h`, `linux/iopoll.h`, `linux/module.h`, `linux/pci.h`, `linux/platform_device.h`, `linux/pm.h`.
• Detected declarations: `struct gpu_i2c_dev`, `function gpu_enable_i2c_bus`, `function gpu_i2c_check_status`, `function gpu_i2c_read`, `function gpu_i2c_start`, `function gpu_i2c_stop`, `function gpu_i2c_write`, `function gpu_i2c_xfer`, `function gpu_i2c_functionality`, `function gpu_i2c_probe`.
• 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.