sound/soc/stm/stm32_sai.h

File Facts

System

Linux kernel

Corpus path

sound/soc/stm/stm32_sai.h

Extension

.h

Size

10445 bytes

Lines

309

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.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/bitfield.h

Detected Declarations

• struct stm32_sai_data
• struct stm32_sai_conf
• struct stm32_sai_data
• enum stm32_sai_syncout

Annotated Snippet

struct stm32_sai_conf {
	int (*get_sai_ck_parent)(struct stm32_sai_data *sai);
	u32 version;
	u32 fifo_size;
	bool has_spdif_pdm;
	bool no_dma_burst;
};

/**
 * struct stm32_sai_data - private data of SAI instance driver
 * @pdev: device data pointer
 * @base: common register bank virtual base address
 * @pclk: SAI bus clock
 * @clk_x8k: SAI parent clock for sampling frequencies multiple of 8kHz
 * @clk_x11k: SAI parent clock for sampling frequencies multiple of 11kHz
 * @conf: SAI hardware capabitilites
 * @irq: SAI interrupt line
 * @set_sync: pointer to synchro mode configuration callback
 * @gcr: SAI Global Configuration Register
 */
struct stm32_sai_data {
	struct platform_device *pdev;
	void __iomem *base;
	struct clk *pclk;
	struct clk *clk_x8k;
	struct clk *clk_x11k;
	struct stm32_sai_conf conf;
	int irq;
	int (*set_sync)(struct stm32_sai_data *sai,
			struct device_node *np_provider, int synco, int synci);
	u32 gcr;
};

Annotation

• Immediate include surface: `linux/bitfield.h`.
• Detected declarations: `struct stm32_sai_data`, `struct stm32_sai_conf`, `struct stm32_sai_data`, `enum stm32_sai_syncout`.
• 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.