sound/soc/codecs/rt5514-spi.h

File Facts

System

Linux kernel

Corpus path

sound/soc/codecs/rt5514-spi.h

Extension

.h

Size

913 bytes

Lines

38

Domain

Driver Families

Bucket

sound/soc

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

• No C-style include directives detected by the generator.

Detected Declarations

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

Annotated Snippet

#ifndef __RT5514_SPI_H__
#define __RT5514_SPI_H__

/**
 * RT5514_SPI_BUF_LEN is the buffer size of SPI master controller.
*/
#define RT5514_SPI_BUF_LEN		240

#define RT5514_BUFFER_VOICE_BASE	0x18000200
#define RT5514_BUFFER_VOICE_LIMIT	0x18000204
#define RT5514_BUFFER_VOICE_WP		0x1800020c
#define RT5514_IRQ_CTRL			0x18002094

#define RT5514_IRQ_STATUS_BIT		(0x1 << 5)

/* SPI Command */
enum {
	RT5514_SPI_CMD_16_READ = 0,
	RT5514_SPI_CMD_16_WRITE,
	RT5514_SPI_CMD_32_READ,
	RT5514_SPI_CMD_32_WRITE,
	RT5514_SPI_CMD_BURST_READ,
	RT5514_SPI_CMD_BURST_WRITE,
};

int rt5514_spi_burst_read(unsigned int addr, u8 *rxbuf, size_t len);
int rt5514_spi_burst_write(u32 addr, const u8 *txbuf, size_t len);

#endif /* __RT5514_SPI_H__ */

Annotation

• Atlas domain: Driver Families / sound/soc.
• 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.