drivers/media/dvb-frontends/cxd2880/cxd2880_io.h

File Facts

System

Linux kernel

Corpus path

drivers/media/dvb-frontends/cxd2880/cxd2880_io.h

Extension

.h

Size

1276 bytes

Lines

55

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

• cxd2880_common.h

Detected Declarations

• struct cxd2880_reg_value
• struct cxd2880_io
• enum cxd2880_io_tgt

Annotated Snippet

struct cxd2880_reg_value {
	u8 addr;
	u8 value;
};

struct cxd2880_io {
	int (*read_regs)(struct cxd2880_io *io,
			 enum cxd2880_io_tgt tgt, u8 sub_address,
			 u8 *data, u32 size);
	int (*write_regs)(struct cxd2880_io *io,
			  enum cxd2880_io_tgt tgt, u8 sub_address,
			  const u8 *data, u32 size);
	int (*write_reg)(struct cxd2880_io *io,
			 enum cxd2880_io_tgt tgt, u8 sub_address,
			 u8 data);
	void *if_object;
	u8 i2c_address_sys;
	u8 i2c_address_demod;
	u8 slave_select;
	void *user;
};

int cxd2880_io_common_write_one_reg(struct cxd2880_io *io,
				    enum cxd2880_io_tgt tgt,
				    u8 sub_address, u8 data);

int cxd2880_io_set_reg_bits(struct cxd2880_io *io,
			    enum cxd2880_io_tgt tgt,
			    u8 sub_address, u8 data, u8 mask);

int cxd2880_io_write_multi_regs(struct cxd2880_io *io,
				enum cxd2880_io_tgt tgt,
				const struct cxd2880_reg_value reg_value[],
				u8 size);
#endif

Annotation

• Immediate include surface: `cxd2880_common.h`.
• Detected declarations: `struct cxd2880_reg_value`, `struct cxd2880_io`, `enum cxd2880_io_tgt`.
• 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.