drivers/i2c/busses/i2c-nomadik.c

File Facts

System

Linux kernel

Corpus path

drivers/i2c/busses/i2c-nomadik.c

Extension

.c

Size

31492 bytes

Lines

1240

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/amba/bus.h
• linux/bitfield.h
• linux/clk.h
• linux/err.h
• linux/i2c.h
• linux/init.h
• linux/interrupt.h
• linux/io.h
• linux/mfd/syscon.h
• linux/module.h
• linux/of.h
• linux/of_device.h
• linux/pinctrl/consumer.h
• linux/pm_runtime.h
• linux/regmap.h
• linux/slab.h
• linux/units.h

Detected Declarations

• struct i2c_vendor_data
• struct i2c_nmk_client
• struct nmk_i2c_dev
• enum i2c_freq_mode
• enum i2c_eyeq5_speed
• enum i2c_status
• enum i2c_operation
• enum i2c_operating_mode
• function i2c_set_bit
• function i2c_clr_bit
• function nmk_i2c_readb
• function nmk_i2c_writeb
• function flush_i2c_fifo
• function disable_all_interrupts
• function clear_all_interrupts
• function init_hw
• function load_i2c_mcr_reg
• function setup_i2c_controller
• function nmk_i2c_wait_xfer_done
• function read_i2c
• function fill_tx_fifo
• function write_i2c
• function nmk_i2c_xfer_one
• function data
• function disable_interrupts
• function i2c_irq_handler
• function nmk_i2c_suspend_late
• function nmk_i2c_resume_early
• function nmk_i2c_runtime_suspend
• function nmk_i2c_runtime_resume
• function nmk_i2c_functionality
• function nmk_i2c_of_probe
• function nmk_i2c_eyeq5_probe
• function nmk_i2c_probe
• function nmk_i2c_remove
• function nmk_i2c_init
• function nmk_i2c_exit
• module init nmk_i2c_init

Annotated Snippet

subsys_initcall(nmk_i2c_init);
module_exit(nmk_i2c_exit);

MODULE_AUTHOR("Sachin Verma");
MODULE_AUTHOR("Srinidhi KASAGAR");
MODULE_DESCRIPTION("Nomadik/Ux500 I2C driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/amba/bus.h`, `linux/bitfield.h`, `linux/clk.h`, `linux/err.h`, `linux/i2c.h`, `linux/init.h`, `linux/interrupt.h`, `linux/io.h`.
• Detected declarations: `struct i2c_vendor_data`, `struct i2c_nmk_client`, `struct nmk_i2c_dev`, `enum i2c_freq_mode`, `enum i2c_eyeq5_speed`, `enum i2c_status`, `enum i2c_operation`, `enum i2c_operating_mode`, `function i2c_set_bit`, `function i2c_clr_bit`.
• 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.