drivers/gpio/gpiolib-acpi.h

File Facts

System

Linux kernel

Corpus path

drivers/gpio/gpiolib-acpi.h

Extension

.h

Size

1964 bytes

Lines

77

Domain

Driver Families

Bucket

drivers/gpio

Inferred role

Driver Families: implementation source

Status

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

Dependency Surface

• linux/err.h
• linux/types.h
• linux/gpio/consumer.h

Detected Declarations

• struct device
• struct fwnode_handle
• struct gpio_chip
• struct gpio_desc
• struct gpio_device
• enum acpi_gpio_ignore_list
• function acpi_gpiochip_add
• function acpi_gpio_count

Annotated Snippet

static inline void acpi_gpiochip_add(struct gpio_chip *chip) { }
static inline void acpi_gpiochip_remove(struct gpio_chip *chip) { }

static inline void
acpi_gpiochip_request_interrupts(struct gpio_chip *chip) { }

static inline void
acpi_gpiochip_free_interrupts(struct gpio_chip *chip) { }

static inline struct gpio_desc *
acpi_find_gpio(struct fwnode_handle *fwnode, const char *con_id,
	       unsigned int idx, enum gpiod_flags *dflags,
	       unsigned long *lookupflags)
{
	return ERR_PTR(-ENOENT);
}
static inline int acpi_gpio_count(const struct fwnode_handle *fwnode,
				  const char *con_id)
{
	return -ENODEV;
}
#endif

void acpi_gpio_process_deferred_list(struct list_head *list);

bool acpi_gpio_add_to_deferred_list(struct list_head *list);
void acpi_gpio_remove_from_deferred_list(struct list_head *list);

int acpi_gpio_need_run_edge_events_on_boot(void);

enum acpi_gpio_ignore_list {
	ACPI_GPIO_IGNORE_WAKE,
	ACPI_GPIO_IGNORE_INTERRUPT,
};

bool acpi_gpio_in_ignore_list(enum acpi_gpio_ignore_list list,
			      const char *controller_in, unsigned int pin_in);

#endif /* GPIOLIB_ACPI_H */

Annotation

• Immediate include surface: `linux/err.h`, `linux/types.h`, `linux/gpio/consumer.h`.
• Detected declarations: `struct device`, `struct fwnode_handle`, `struct gpio_chip`, `struct gpio_desc`, `struct gpio_device`, `enum acpi_gpio_ignore_list`, `function acpi_gpiochip_add`, `function acpi_gpio_count`.
• Atlas domain: Driver Families / drivers/gpio.
• Implementation status: source 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.