drivers/mfd/intel_quark_i2c_gpio.c

File Facts

System

Linux kernel

Corpus path

drivers/mfd/intel_quark_i2c_gpio.c

Extension

.c

Size

8183 bytes

Lines

310

Domain

Driver Families

Bucket

drivers/mfd

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.
• 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/kernel.h
• linux/module.h
• linux/pci.h
• linux/mfd/core.h
• linux/clkdev.h
• linux/clk-provider.h
• linux/dmi.h
• linux/i2c.h
• linux/property.h

Detected Declarations

• struct intel_quark_mfd
• function intel_quark_register_i2c_clk
• function intel_quark_unregister_i2c_clk
• function intel_quark_i2c_setup
• function intel_quark_gpio_setup
• function intel_quark_mfd_probe
• function intel_quark_mfd_remove

Annotated Snippet

static struct pci_driver intel_quark_mfd_driver = {
	.name		= "intel_quark_mfd_i2c_gpio",
	.id_table	= intel_quark_mfd_ids,
	.probe		= intel_quark_mfd_probe,
	.remove		= intel_quark_mfd_remove,
};

module_pci_driver(intel_quark_mfd_driver);

MODULE_AUTHOR("Raymond Tan <raymond.tan@intel.com>");
MODULE_DESCRIPTION("Intel Quark MFD PCI driver for I2C & GPIO");
MODULE_LICENSE("GPL v2");

Annotation

• Immediate include surface: `linux/kernel.h`, `linux/module.h`, `linux/pci.h`, `linux/mfd/core.h`, `linux/clkdev.h`, `linux/clk-provider.h`, `linux/dmi.h`, `linux/i2c.h`.
• Detected declarations: `struct intel_quark_mfd`, `function intel_quark_register_i2c_clk`, `function intel_quark_unregister_i2c_clk`, `function intel_quark_i2c_setup`, `function intel_quark_gpio_setup`, `function intel_quark_mfd_probe`, `function intel_quark_mfd_remove`.
• Atlas domain: Driver Families / drivers/mfd.
• Implementation status: pattern implementation candidate.

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.