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

File Facts

System

Linux kernel

Corpus path

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

Extension

.c

Size

7886 bytes

Lines

336

Domain

Driver Families

Bucket

drivers/i2c

Inferred role

Driver Families: exported/initcall integration point

Status

integration 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.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• 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/clk-provider.h
• linux/clk.h
• linux/delay.h
• linux/dmi.h
• linux/err.h
• linux/errno.h
• linux/i2c.h
• linux/interrupt.h
• linux/io.h
• linux/kernel.h
• linux/mfd/syscon.h
• linux/module.h
• linux/platform_device.h
• linux/pm.h
• linux/pm_runtime.h
• linux/property.h
• linux/regmap.h
• linux/reset.h
• linux/sched.h
• linux/slab.h
• linux/units.h
• i2c-designware-core.h

Detected Declarations

• function Copyright
• function dw_i2c_get_parent_regmap
• function dw_i2c_plat_pm_cleanup
• function dw_i2c_plat_request_regs
• function i2c_dw_probe_lock_support
• function dw_i2c_plat_probe
• function dw_i2c_plat_remove
• function dw_i2c_plat_shutdown
• function dw_i2c_init_driver
• function dw_i2c_exit_driver
• module init dw_i2c_init_driver

Annotated Snippet

subsys_initcall(dw_i2c_init_driver);

static void __exit dw_i2c_exit_driver(void)
{
	platform_driver_unregister(&dw_i2c_driver);
}
module_exit(dw_i2c_exit_driver);

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

Annotation

• Immediate include surface: `linux/clk-provider.h`, `linux/clk.h`, `linux/delay.h`, `linux/dmi.h`, `linux/err.h`, `linux/errno.h`, `linux/i2c.h`, `linux/interrupt.h`.
• Detected declarations: `function Copyright`, `function dw_i2c_get_parent_regmap`, `function dw_i2c_plat_pm_cleanup`, `function dw_i2c_plat_request_regs`, `function i2c_dw_probe_lock_support`, `function dw_i2c_plat_probe`, `function dw_i2c_plat_remove`, `function dw_i2c_plat_shutdown`, `function dw_i2c_init_driver`, `function dw_i2c_exit_driver`.
• Atlas domain: Driver Families / drivers/i2c.
• Implementation status: integration 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.