drivers/gpio/gpio-nomadik.c

File Facts

System

Linux kernel

Corpus path

drivers/gpio/gpio-nomadik.c

Extension

.c

Size

19180 bytes

Lines

738

Domain

Driver Families

Bucket

drivers/gpio

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.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• 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/cleanup.h
• linux/clk.h
• linux/gpio/consumer.h
• linux/gpio/driver.h
• linux/interrupt.h
• linux/kernel.h
• linux/mod_devicetable.h
• linux/pinctrl/pinctrl.h
• linux/platform_device.h
• linux/property.h
• linux/reset.h
• linux/seq_file.h
• linux/slab.h
• linux/string_choices.h
• linux/types.h
• linux/gpio/gpio-nomadik.h

Detected Declarations

• enum nmk_gpio_irq_type
• function __nmk_gpio_set_slpm
• function __nmk_gpio_set_output
• function __nmk_gpio_make_output
• function nmk_gpio_irq_ack
• function __nmk_gpio_irq_modify
• function __nmk_gpio_set_wake
• function nmk_gpio_irq_maskunmask
• function nmk_gpio_irq_mask
• function nmk_gpio_irq_unmask
• function nmk_gpio_irq_set_wake
• function nmk_gpio_irq_set_type
• function nmk_gpio_irq_startup
• function nmk_gpio_irq_shutdown
• function nmk_gpio_irq_handler
• function nmk_gpio_get_dir
• function nmk_gpio_make_input
• function nmk_gpio_get_input
• function nmk_gpio_set_output
• function nmk_gpio_make_output
• function nmk_gpio_get_mode
• function nmk_gpio_dbg_show_one
• function request_irq
• function nmk_gpio_dbg_show
• function nmk_gpio_irq_print_chip
• function nmk_gpio_probe
• function nmk_gpio_init
• module init nmk_gpio_init

Annotated Snippet

subsys_initcall(nmk_gpio_init);

Annotation

• Immediate include surface: `linux/cleanup.h`, `linux/clk.h`, `linux/gpio/consumer.h`, `linux/gpio/driver.h`, `linux/interrupt.h`, `linux/kernel.h`, `linux/mod_devicetable.h`, `linux/pinctrl/pinctrl.h`.
• Detected declarations: `enum nmk_gpio_irq_type`, `function __nmk_gpio_set_slpm`, `function __nmk_gpio_set_output`, `function __nmk_gpio_make_output`, `function nmk_gpio_irq_ack`, `function __nmk_gpio_irq_modify`, `function __nmk_gpio_set_wake`, `function nmk_gpio_irq_maskunmask`, `function nmk_gpio_irq_mask`, `function nmk_gpio_irq_unmask`.
• Atlas domain: Driver Families / drivers/gpio.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.
• 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.