drivers/staging/media/atomisp/pci/ia_css_frac.h

File Facts

System

Linux kernel

Corpus path

drivers/staging/media/atomisp/pci/ia_css_frac.h

Extension

.h

Size

832 bytes

Lines

30

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

• type_support.h

Detected Declarations

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

Annotated Snippet

#ifndef _IA_CSS_FRAC_H
#define _IA_CSS_FRAC_H

/* @file
 * This file contains typedefs used for fractional numbers
 */

#include <type_support.h>

/* Fixed point types.
 * NOTE: the 16 bit fixed point types actually occupy 32 bits
 * to save on extension operations in the ISP code.
 */
/* Unsigned fixed point value, 0 integer bits, 16 fractional bits */
typedef u32 ia_css_u0_16;
/* Unsigned fixed point value, 5 integer bits, 11 fractional bits */
typedef u32 ia_css_u5_11;
/* Unsigned fixed point value, 8 integer bits, 8 fractional bits */
typedef u32 ia_css_u8_8;
/* Signed fixed point value, 0 integer bits, 15 fractional bits */
typedef s32 ia_css_s0_15;

#endif /* _IA_CSS_FRAC_H */

Annotation

• Immediate include surface: `type_support.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.