sound/soc/amd/renoir/rn_acp3x.h

Source file repositories/reference/linux-study-clean/sound/soc/amd/renoir/rn_acp3x.h

File Facts

System
Linux kernel
Corpus path
sound/soc/amd/renoir/rn_acp3x.h
Extension
.h
Size
2354 bytes
Lines
94
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.

Dependency Surface

Detected Declarations

Annotated Snippet

struct pdm_dev_data {
	u32 pdm_irq;
	void __iomem *acp_base;
	struct snd_pcm_substream *capture_stream;
};

struct pdm_stream_instance {
	u16 num_pages;
	u16 channels;
	dma_addr_t dma_addr;
	u64 bytescount;
	void __iomem *acp_base;
};

union acp_pdm_dma_count {
	struct {
	u32 low;
	u32 high;
	} bcount;
	u64 bytescount;
};

static inline u32 rn_readl(void __iomem *base_addr)
{
	return readl(base_addr - ACP_PHY_BASE_ADDRESS);
}

static inline void rn_writel(u32 val, void __iomem *base_addr)
{
	writel(val, base_addr - ACP_PHY_BASE_ADDRESS);
}

/* Machine configuration */
int snd_amd_acp_find_config(struct pci_dev *pci);

Annotation

Implementation Notes