drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/volt.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/volt.h

Extension

.h

Size

781 bytes

Lines

39

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

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

Detected Declarations

• struct nvbios_volt
• struct nvbios_volt_entry
• enum nvbios_volt_type

Annotated Snippet

struct nvbios_volt {
	enum nvbios_volt_type type;
	u32 min;
	u32 max;
	u32 base;

	/* GPIO mode */
	bool ranged;
	u8   vidmask;
	s16  step;

	/* PWM mode */
	u32 pwm_freq;
	u32 pwm_range;
};

u32 nvbios_volt_table(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len);
u32 nvbios_volt_parse(struct nvkm_bios *, u8 *ver, u8 *hdr, u8 *cnt, u8 *len,
		      struct nvbios_volt *);

struct nvbios_volt_entry {
	u32 voltage;
	u8  vid;
};

u32 nvbios_volt_entry(struct nvkm_bios *, int idx, u8 *ver, u8 *len);
u32 nvbios_volt_entry_parse(struct nvkm_bios *, int idx, u8 *ver, u8 *len,
			    struct nvbios_volt_entry *);
#endif

Annotation

• Detected declarations: `struct nvbios_volt`, `struct nvbios_volt_entry`, `enum nvbios_volt_type`.
• 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.