sound/soc/fsl/imx-pcm.h

File Facts

System

Linux kernel

Corpus path

sound/soc/fsl/imx-pcm.h

Extension

.h

Size

1279 bytes

Lines

56

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/dma/imx-dma.h

Detected Declarations

• struct imx_pcm_fiq_params
• function imx_pcm_dma_init
• function imx_pcm_fiq_init
• function imx_pcm_fiq_exit

Annotated Snippet

struct imx_pcm_fiq_params {
	int irq;
	void __iomem *base;

	/* Pointer to original ssi driver to setup tx rx sizes */
	struct snd_dmaengine_dai_dma_data *dma_params_rx;
	struct snd_dmaengine_dai_dma_data *dma_params_tx;
};

#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_DMA)
int imx_pcm_dma_init(struct platform_device *pdev);
#else
static inline int imx_pcm_dma_init(struct platform_device *pdev)
{
	return -ENODEV;
}
#endif

#if IS_ENABLED(CONFIG_SND_SOC_IMX_PCM_FIQ)
int imx_pcm_fiq_init(struct platform_device *pdev,
		struct imx_pcm_fiq_params *params);
void imx_pcm_fiq_exit(struct platform_device *pdev);
#else
static inline int imx_pcm_fiq_init(struct platform_device *pdev,
		struct imx_pcm_fiq_params *params)
{
	return -ENODEV;
}

static inline void imx_pcm_fiq_exit(struct platform_device *pdev)
{
}
#endif

#endif /* _IMX_PCM_H */

Annotation

• Immediate include surface: `linux/dma/imx-dma.h`.
• Detected declarations: `struct imx_pcm_fiq_params`, `function imx_pcm_dma_init`, `function imx_pcm_fiq_init`, `function imx_pcm_fiq_exit`.
• 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.