drivers/platform/x86/barco-p50-gpio.c

File Facts

System

Linux kernel

Corpus path

drivers/platform/x86/barco-p50-gpio.c

Extension

.c

Size

10152 bytes

Lines

458

Domain

Driver Families

Bucket

drivers/platform

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/delay.h
• linux/dev_printk.h
• linux/dmi.h
• linux/err.h
• linux/io.h
• linux/kernel.h
• linux/leds.h
• linux/module.h
• linux/platform_device.h
• linux/gpio/driver.h
• linux/gpio/machine.h
• linux/gpio/property.h
• linux/input-event-codes.h
• linux/property.h

Detected Declarations

• struct p50_gpio
• function p50_wait_ec
• function p50_read_mbox_reg
• function p50_write_mbox_reg
• function p50_wait_mbox_idle
• function p50_send_mbox_cmd
• function p50_gpio_get_direction
• function p50_gpio_get
• function p50_gpio_set
• function p50_gpio_probe
• function p50_gpio_remove
• function p50_module_init
• function p50_module_exit
• module init p50_module_init

Annotated Snippet

module_init(p50_module_init);
module_exit(p50_module_exit);

MODULE_AUTHOR("Santosh Kumar Yadav, Barco NV <santoshkumar.yadav@barco.com>");
MODULE_DESCRIPTION("Barco P50 identify GPIOs driver");
MODULE_LICENSE("GPL");

Annotation

• Immediate include surface: `linux/delay.h`, `linux/dev_printk.h`, `linux/dmi.h`, `linux/err.h`, `linux/io.h`, `linux/kernel.h`, `linux/leds.h`, `linux/module.h`.
• Detected declarations: `struct p50_gpio`, `function p50_wait_ec`, `function p50_read_mbox_reg`, `function p50_write_mbox_reg`, `function p50_wait_mbox_idle`, `function p50_send_mbox_cmd`, `function p50_gpio_get_direction`, `function p50_gpio_get`, `function p50_gpio_set`, `function p50_gpio_probe`.
• Atlas domain: Driver Families / drivers/platform.
• 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.