drivers/media/platform/qcom/camss/camss-format.h

File Facts

System

Linux kernel

Corpus path

drivers/media/platform/qcom/camss/camss-format.h

Extension

.h

Size

2065 bytes

Lines

64

Domain

Driver Families

Bucket

drivers/media

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

• linux/types.h

Detected Declarations

• struct fract
• struct camss_format_info
• struct camss_formats

Annotated Snippet

struct fract {
	u8 numerator;
	u8 denominator;
};

/*
 * struct camss_format_info - ISP media bus format information
 * @code: V4L2 media bus format code
 * @mbus_bpp: Media bus bits per pixel
 * @pixelformat: V4L2 pixel format FCC identifier
 * @planes: Number of planes
 * @hsub: Horizontal subsampling (for each plane)
 * @vsub: Vertical subsampling (for each plane)
 * @bpp: Bits per pixel when stored in memory (for each plane)
 */
struct camss_format_info {
	u32 code;
	u32 mbus_bpp;
	u32 pixelformat;
	u8 planes;
	struct fract hsub[3];
	struct fract vsub[3];
	unsigned int bpp[3];
};

struct camss_formats {
	unsigned int nformats;
	const struct camss_format_info *formats;
};

u8 camss_format_get_bpp(const struct camss_format_info *formats, unsigned int nformats, u32 code);
unsigned int camss_format_get_bpl_alignment(const struct camss_format_info *f);
u32 camss_format_find_code(u32 *code, unsigned int n_code, unsigned int index, u32 req_code);
int camss_format_find_format(u32 code, u32 pixelformat, const struct camss_format_info *formats,
			     unsigned int nformats);

#endif /* __CAMSS_FORMAT_H__ */

Annotation

• Immediate include surface: `linux/types.h`.
• Detected declarations: `struct fract`, `struct camss_format_info`, `struct camss_formats`.
• Atlas domain: Driver Families / drivers/media.
• 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.