drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/display/dc/gpio/hw_hpd.h

Extension

.h

Size

1655 bytes

Lines

50

Domain

Driver Families

Bucket

drivers/gpu

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

• hpd_regs.h

Detected Declarations

• struct hw_hpd

Annotated Snippet

struct hw_hpd {
	struct hw_gpio base;
	const struct hpd_registers *regs;
	const struct hpd_sh_mask *shifts;
	const struct hpd_sh_mask *masks;
};

#define HW_HPD_FROM_BASE(hw_gpio) \
	container_of((HW_GPIO_FROM_BASE(hw_gpio)), struct hw_hpd, base)

void dal_hw_hpd_init(
	struct hw_hpd **hw_hpd,
	struct dc_context *ctx,
	enum gpio_id id,
	uint32_t en);

struct hw_gpio_pin *dal_hw_hpd_get_pin(struct gpio *gpio);

#endif

Annotation

• Immediate include surface: `hpd_regs.h`.
• Detected declarations: `struct hw_hpd`.
• Atlas domain: Driver Families / drivers/gpu.
• 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.