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

File Facts

System

Linux kernel

Corpus path

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

Extension

.c

Size

10258 bytes

Lines

389

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.
• 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/err.h
• linux/errno.h
• linux/i2c.h
• linux/interrupt.h
• linux/io.h
• linux/kernel.h
• linux/module.h
• linux/pci.h
• linux/pm.h
• linux/pm_runtime.h
• linux/power_supply.h
• linux/sched.h
• linux/slab.h
• i2c-designware-core.h
• i2c-ccgx-ucsi.h

Detected Declarations

• struct dw_scl_sda_cfg
• struct dw_pci_controller
• enum dw_pci_ctl_id_t
• function mfld_get_clk_rate_khz
• function mfld_setup
• function mrfld_setup
• function ehl_get_clk_rate_khz
• function navi_amd_get_clk_rate_khz
• function navi_amd_setup
• function i2c_dw_pci_probe
• function i2c_dw_pci_remove
• function i2c_dw_pci_shutdown

Annotated Snippet

static struct pci_driver dw_i2c_driver = {
	.name		= DRIVER_NAME,
	.probe		= i2c_dw_pci_probe,
	.remove		= i2c_dw_pci_remove,
	.shutdown	= i2c_dw_pci_shutdown,
	.driver         = {
		.pm	= pm_ptr(&i2c_dw_dev_pm_ops),
	},
	.id_table	= i2c_designware_pci_ids,
};
module_pci_driver(dw_i2c_driver);

MODULE_AUTHOR("Baruch Siach <baruch@tkos.co.il>");
MODULE_DESCRIPTION("Synopsys DesignWare PCI I2C bus adapter");
MODULE_LICENSE("GPL");
MODULE_IMPORT_NS("I2C_DW");
MODULE_IMPORT_NS("I2C_DW_COMMON");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/err.h`, `linux/errno.h`, `linux/i2c.h`, `linux/interrupt.h`, `linux/io.h`, `linux/kernel.h`, `linux/module.h`.
• Detected declarations: `struct dw_scl_sda_cfg`, `struct dw_pci_controller`, `enum dw_pci_ctl_id_t`, `function mfld_get_clk_rate_khz`, `function mfld_setup`, `function mrfld_setup`, `function ehl_get_clk_rate_khz`, `function navi_amd_get_clk_rate_khz`, `function navi_amd_setup`, `function i2c_dw_pci_probe`.
• Atlas domain: Driver Families / drivers/i2c.
• 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.