drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h

File Facts

System

Linux kernel

Corpus path

drivers/staging/media/atomisp/pci/hive_isp_css_include/math_support.h

Extension

.h

Size

491 bytes

Lines

18

Domain

Driver Families

Bucket

drivers/staging

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.

Dependency Surface

• linux/minmax.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef __MATH_SUPPORT_H
#define __MATH_SUPPORT_H

/* Override the definition of max/min from Linux kernel */
#include <linux/minmax.h>

#define CEIL_DIV(a, b)       (((b) != 0) ? ((a) + (b) - 1) / (b) : 0)
#define CEIL_MUL(a, b)       (CEIL_DIV(a, b) * (b))
#define CEIL_SHIFT(a, b)     (((a) + (1 << (b)) - 1) >> (b))

#endif /* __MATH_SUPPORT_H */

Annotation

• Immediate include surface: `linux/minmax.h`.
• Atlas domain: Driver Families / drivers/staging.
• 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.