drivers/gpio/gpiolib-acpi-quirks.c

File Facts

System

Linux kernel

Corpus path

drivers/gpio/gpiolib-acpi-quirks.c

Extension

.c

Size

11986 bytes

Lines

425

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/dmi.h
• linux/kstrtox.h
• linux/list.h
• linux/module.h
• linux/mutex.h
• linux/printk.h
• linux/string.h
• linux/types.h
• gpiolib-acpi.h

Detected Declarations

• struct acpi_gpiolib_dmi_quirk
• function acpi_gpio_add_to_deferred_list
• function acpi_gpio_remove_from_deferred_list
• function acpi_gpio_need_run_edge_events_on_boot
• function acpi_gpio_in_ignore_list
• function acpi_gpio_handle_deferred_request_irqs
• function DMI_MATCH
• function acpi_gpio_setup_params

Annotated Snippet

/* Directly after dmi_setup() which runs as core_initcall() */
postcore_initcall(acpi_gpio_setup_params);

Annotation

• Immediate include surface: `linux/dmi.h`, `linux/kstrtox.h`, `linux/list.h`, `linux/module.h`, `linux/mutex.h`, `linux/printk.h`, `linux/string.h`, `linux/types.h`.
• Detected declarations: `struct acpi_gpiolib_dmi_quirk`, `function acpi_gpio_add_to_deferred_list`, `function acpi_gpio_remove_from_deferred_list`, `function acpi_gpio_need_run_edge_events_on_boot`, `function acpi_gpio_in_ignore_list`, `function acpi_gpio_handle_deferred_request_irqs`, `function DMI_MATCH`, `function acpi_gpio_setup_params`.
• 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.