drivers/media/pci/mgb4/mgb4_i2c.h

File Facts

System

Linux kernel

Corpus path

drivers/media/pci/mgb4/mgb4_i2c.h

Extension

.h

Size

895 bytes

Lines

36

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/i2c.h

Detected Declarations

• struct mgb4_i2c_client
• struct mgb4_i2c_kv

Annotated Snippet

struct mgb4_i2c_client {
	struct i2c_client *client;
	int addr_size;
};

struct mgb4_i2c_kv {
	u16 reg;
	u8 mask;
	u8 val;
};

int mgb4_i2c_init(struct mgb4_i2c_client *client, struct i2c_adapter *adap,
		  struct i2c_board_info const *info, int addr_size);
void mgb4_i2c_free(struct mgb4_i2c_client *client);

s32 mgb4_i2c_read_byte(struct mgb4_i2c_client *client, u16 reg);
s32 mgb4_i2c_write_byte(struct mgb4_i2c_client *client, u16 reg, u8 val);
s32 mgb4_i2c_mask_byte(struct mgb4_i2c_client *client, u16 reg, u8 mask,
		       u8 val);

int mgb4_i2c_configure(struct mgb4_i2c_client *client,
		       const struct mgb4_i2c_kv *values, size_t count);

#endif

Annotation

• Immediate include surface: `linux/i2c.h`.
• Detected declarations: `struct mgb4_i2c_client`, `struct mgb4_i2c_kv`.
• 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.