drivers/i2c/busses/i2c-omap.c

File Facts

System

Linux kernel

Corpus path

drivers/i2c/busses/i2c-omap.c

Extension

.c

Size

43473 bytes

Lines

1633

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.
• 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/module.h
• linux/delay.h
• linux/i2c.h
• linux/err.h
• linux/interrupt.h
• linux/completion.h
• linux/platform_device.h
• linux/clk.h
• linux/io.h
• linux/mux/consumer.h
• linux/of.h
• linux/slab.h
• linux/platform_data/i2c-omap.h
• linux/pm_runtime.h
• linux/pinctrl/consumer.h
• linux/property.h

Detected Declarations

• struct omap_i2c_dev
• function omap_i2c_write_reg
• function omap_i2c_read_reg
• function __omap_i2c_init
• function omap_i2c_reset
• function omap_i2c_init
• function omap_i2c_recover_bus
• function omap_i2c_wait_for_bb
• function omap_i2c_wait_for_bb_valid
• function omap_i2c_resize_fifo
• function omap_i2c_wait
• function omap_i2c_xfer_msg
• function omap_i2c_xfer_common
• function omap_i2c_xfer_irq
• function omap_i2c_xfer_polling
• function omap_i2c_func
• function omap_i2c_complete_cmd
• function omap_i2c_ack_stat
• function i2c_omap_errata_i207
• function omap_i2c_omap1_isr
• function errata_omap3_i462
• function omap_i2c_receive_data
• function omap_i2c_transmit_data
• function omap_i2c_xfer_data
• function omap_i2c_isr_thread
• function omap_i2c_get_scl
• function omap_i2c_get_sda
• function omap_i2c_set_scl
• function omap_i2c_prepare_recovery
• function omap_i2c_unprepare_recovery
• function omap_i2c_probe
• function omap_i2c_remove
• function omap_i2c_runtime_suspend
• function omap_i2c_runtime_resume
• function omap_i2c_suspend
• function omap_i2c_resume
• function omap_i2c_init_driver
• function omap_i2c_exit_driver
• module init omap_i2c_init_driver

Annotated Snippet

subsys_initcall(omap_i2c_init_driver);

static void __exit omap_i2c_exit_driver(void)
{
	platform_driver_unregister(&omap_i2c_driver);
}
module_exit(omap_i2c_exit_driver);

MODULE_AUTHOR("MontaVista Software, Inc. (and others)");
MODULE_DESCRIPTION("TI OMAP I2C bus adapter");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:omap_i2c");

Annotation

• Immediate include surface: `linux/module.h`, `linux/delay.h`, `linux/i2c.h`, `linux/err.h`, `linux/interrupt.h`, `linux/completion.h`, `linux/platform_device.h`, `linux/clk.h`.
• Detected declarations: `struct omap_i2c_dev`, `function omap_i2c_write_reg`, `function omap_i2c_read_reg`, `function __omap_i2c_init`, `function omap_i2c_reset`, `function omap_i2c_init`, `function omap_i2c_recover_bus`, `function omap_i2c_wait_for_bb`, `function omap_i2c_wait_for_bb_valid`, `function omap_i2c_resize_fifo`.
• Atlas domain: Driver Families / drivers/i2c.
• Implementation status: integration 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.