drivers/iio/dac/ad5446.h

File Facts

System

Linux kernel

Corpus path

drivers/iio/dac/ad5446.h

Extension

.h

Size

2128 bytes

Lines

78

Domain

Driver Families

Bucket

drivers/iio

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/bits.h
• linux/compiler.h
• linux/iio/iio.h
• linux/mutex.h
• linux/types.h

Detected Declarations

• struct device
• struct ad5446_state
• struct ad5446_chip_info

Annotated Snippet

struct ad5446_state {
	struct device *dev;
	const struct ad5446_chip_info *chip_info;
	unsigned short vref_mv;
	unsigned int cached_val;
	unsigned int pwr_down_mode;
	unsigned int pwr_down;
	/* mutex to protect device shared data */
	struct mutex lock;
	union {
		__be16 d16;
		u8 d24[3];
	} __aligned(IIO_DMA_MINALIGN);
};

/**
 * struct ad5446_chip_info - chip specific information
 * @channel:		channel spec for the DAC
 * @int_vref_mv:	AD5620/40/60: the internal reference voltage
 * @write:		chip specific helper function to write to the register
 */
struct ad5446_chip_info {
	struct iio_chan_spec channel;
	u16 int_vref_mv;
	int (*write)(struct ad5446_state *st, unsigned int val);
};

int ad5446_probe(struct device *dev, const char *name,
		 const struct ad5446_chip_info *chip_info);

#endif

Annotation

• Immediate include surface: `linux/bits.h`, `linux/compiler.h`, `linux/iio/iio.h`, `linux/mutex.h`, `linux/types.h`.
• Detected declarations: `struct device`, `struct ad5446_state`, `struct ad5446_chip_info`.
• Atlas domain: Driver Families / drivers/iio.
• 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.