drivers/gpio/gpio-f7188x.c

File Facts

System

Linux kernel

Corpus path

drivers/gpio/gpio-f7188x.c

Extension

.c

Size

16503 bytes

Lines

672

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.
• 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/module.h
• linux/init.h
• linux/platform_device.h
• linux/io.h
• linux/gpio/driver.h
• linux/bitops.h

Detected Declarations

• struct f7188x_sio
• struct f7188x_gpio_bank
• struct f7188x_gpio_data
• enum chips
• function superio_inb
• function superio_inw
• function superio_outb
• function superio_enter
• function superio_select
• function superio_exit
• function f7188x_gpio_get_direction
• function f7188x_gpio_direction_in
• function f7188x_gpio_get
• function f7188x_gpio_direction_out
• function f7188x_gpio_set
• function f7188x_gpio_set_config
• function f7188x_gpio_probe
• function f7188x_find
• function f7188x_gpio_device_add
• function f7188x_gpio_init
• function f7188x_gpio_exit
• module init f7188x_gpio_init

Annotated Snippet

subsys_initcall(f7188x_gpio_init);

static void __exit f7188x_gpio_exit(void)
{
	platform_device_unregister(f7188x_gpio_pdev);
	platform_driver_unregister(&f7188x_gpio_driver);
}
module_exit(f7188x_gpio_exit);

MODULE_DESCRIPTION("GPIO driver for Super-I/O chips F71869, F71869A, F71882FG, F71889A, F71889F and F81866");
MODULE_AUTHOR("Simon Guinot <simon.guinot@sequanux.org>");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/module.h`, `linux/init.h`, `linux/platform_device.h`, `linux/io.h`, `linux/gpio/driver.h`, `linux/bitops.h`.
• Detected declarations: `struct f7188x_sio`, `struct f7188x_gpio_bank`, `struct f7188x_gpio_data`, `enum chips`, `function superio_inb`, `function superio_inw`, `function superio_outb`, `function superio_enter`, `function superio_select`, `function superio_exit`.
• Atlas domain: Driver Families / drivers/gpio.
• Implementation status: integration 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.