include/linux/gpio/forwarder.h

File Facts

System

Linux kernel

Corpus path

include/linux/gpio/forwarder.h

Extension

.h

Size

1613 bytes

Lines

42

Domain

Core OS

Bucket

Core Kernel Interface

Inferred role

Core OS: implementation source

Status

source implementation candidate

Why This File Exists

Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.

• Core operating-system implementation surface: boot, tasks, memory, VFS, syscall-facing interfaces, synchronization, credentials, and isolation.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• struct gpio_desc
• struct gpio_chip
• struct gpiochip_fwd

Annotated Snippet

#ifndef __LINUX_GPIO_FORWARDER_H
#define __LINUX_GPIO_FORWARDER_H

struct gpio_desc;
struct gpio_chip;
struct gpiochip_fwd;

struct gpiochip_fwd *devm_gpiochip_fwd_alloc(struct device *dev,
					     unsigned int ngpios);
int gpiochip_fwd_desc_add(struct gpiochip_fwd *fwd,
			  struct gpio_desc *desc, unsigned int offset);
void gpiochip_fwd_desc_free(struct gpiochip_fwd *fwd, unsigned int offset);
int gpiochip_fwd_register(struct gpiochip_fwd *fwd, void *data);

struct gpio_chip *gpiochip_fwd_get_gpiochip(struct gpiochip_fwd *fwd);

void *gpiochip_fwd_get_data(struct gpiochip_fwd *fwd);

int gpiochip_fwd_gpio_request(struct gpiochip_fwd *fwd, unsigned int offset);
int gpiochip_fwd_gpio_get_direction(struct gpiochip_fwd *fwd,
				    unsigned int offset);
int gpiochip_fwd_gpio_direction_input(struct gpiochip_fwd *fwd,
				      unsigned int offset);
int gpiochip_fwd_gpio_direction_output(struct gpiochip_fwd *fwd,
				       unsigned int offset,
				       int value);
int gpiochip_fwd_gpio_get(struct gpiochip_fwd *fwd, unsigned int offset);
int gpiochip_fwd_gpio_get_multiple(struct gpiochip_fwd *fwd,
				   unsigned long *mask,
				   unsigned long *bits);
int gpiochip_fwd_gpio_set(struct gpiochip_fwd *fwd, unsigned int offset,
			  int value);
int gpiochip_fwd_gpio_set_multiple(struct gpiochip_fwd *fwd,
				   unsigned long *mask,
				   unsigned long *bits);
int gpiochip_fwd_gpio_set_config(struct gpiochip_fwd *fwd, unsigned int offset,
				 unsigned long config);
int gpiochip_fwd_gpio_to_irq(struct gpiochip_fwd *fwd, unsigned int offset);

#endif

Annotation

• Detected declarations: `struct gpio_desc`, `struct gpio_chip`, `struct gpiochip_fwd`.
• Atlas domain: Core OS / Core Kernel Interface.
• 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.