drivers/gpu/drm/amd/display/dc/basics/conversion.h

File Facts

System

Linux kernel

Corpus path

drivers/gpu/drm/amd/display/dc/basics/conversion.h

Extension

.h

Size

1738 bytes

Lines

54

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

• include/fixed31_32.h

Detected Declarations

• function log_2

Annotated Snippet

#ifndef __DAL_CONVERSION_H__
#define __DAL_CONVERSION_H__

#include "include/fixed31_32.h"

uint16_t fixed_point_to_int_frac(
	struct fixed31_32 arg,
	uint8_t integer_bits,
	uint8_t fractional_bits);

void convert_float_matrix(
	uint16_t *matrix,
	struct fixed31_32 *flt,
	uint32_t buffer_size);

void reduce_fraction(uint32_t num, uint32_t den,
		uint32_t *out_num, uint32_t *out_den);

void convert_hw_matrix(struct fixed31_32 *matrix,
		       uint16_t *reg,
		       uint32_t buffer_size);

static inline unsigned int log_2(unsigned int num)
{
	return ilog2(num);
}

#endif

Annotation

• Immediate include surface: `include/fixed31_32.h`.
• Detected declarations: `function log_2`.
• 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.