sound/pci/aw2/aw2-saa7146.h

Source file repositories/reference/linux-study-clean/sound/pci/aw2/aw2-saa7146.h

File Facts

System: Linux kernel
Corpus path: sound/pci/aw2/aw2-saa7146.h
Extension: .h
Size: 3057 bytes
Lines: 94
Domain: Driver Families
Bucket: sound/pci
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.
Touches IRQ or DMA behavior; this matters for the representative real-device path.
Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

No C-style include directives detected by the generator.

Detected Declarations

struct snd_pcm_substream
struct snd_aw2_saa7146_cb_param
struct snd_aw2_saa7146

Annotated Snippet

struct snd_aw2_saa7146_cb_param {
	snd_aw2_saa7146_it_cb p_it_callback;
	struct snd_pcm_substream *p_callback_param;
};

/* definition of the chip-specific record */

struct snd_aw2_saa7146 {
	void __iomem *base_addr;
};

extern void snd_aw2_saa7146_setup(struct snd_aw2_saa7146 *chip,
				  void __iomem *pci_base_addr);
extern int snd_aw2_saa7146_free(struct snd_aw2_saa7146 *chip);

extern void snd_aw2_saa7146_pcm_init_playback(struct snd_aw2_saa7146 *chip,
					      int stream_number,
					      unsigned long dma_addr,
					      unsigned long period_size,
					      unsigned long buffer_size);
extern void snd_aw2_saa7146_pcm_init_capture(struct snd_aw2_saa7146 *chip,
					     int stream_number,
					     unsigned long dma_addr,
					     unsigned long period_size,
					     unsigned long buffer_size);
extern void snd_aw2_saa7146_define_it_playback_callback(unsigned int
							stream_number,
							snd_aw2_saa7146_it_cb
							p_it_callback,
							void *p_callback_param);
extern void snd_aw2_saa7146_define_it_capture_callback(unsigned int
						       stream_number,
						       snd_aw2_saa7146_it_cb
						       p_it_callback,
						       void *p_callback_param);
extern void snd_aw2_saa7146_pcm_trigger_start_capture(struct snd_aw2_saa7146
						      *chip, int stream_number);
extern void snd_aw2_saa7146_pcm_trigger_stop_capture(struct snd_aw2_saa7146
						     *chip, int stream_number);

extern void snd_aw2_saa7146_pcm_trigger_start_playback(struct snd_aw2_saa7146
						       *chip,
						       int stream_number);
extern void snd_aw2_saa7146_pcm_trigger_stop_playback(struct snd_aw2_saa7146
						      *chip, int stream_number);

extern irqreturn_t snd_aw2_saa7146_interrupt(int irq, void *dev_id);
extern unsigned int snd_aw2_saa7146_get_hw_ptr_playback(struct snd_aw2_saa7146
							*chip,
							int stream_number,
							unsigned char
							*start_addr,
							unsigned int
							buffer_size);
extern unsigned int snd_aw2_saa7146_get_hw_ptr_capture(struct snd_aw2_saa7146
						       *chip,
						       int stream_number,
						       unsigned char
						       *start_addr,
						       unsigned int
						       buffer_size);

extern void snd_aw2_saa7146_use_digital_input(struct snd_aw2_saa7146 *chip,
					      int use_digital);

extern int snd_aw2_saa7146_is_using_digital_input(struct snd_aw2_saa7146
						  *chip);

#endif

Annotation

Detected declarations: `struct snd_pcm_substream`, `struct snd_aw2_saa7146_cb_param`, `struct snd_aw2_saa7146`.
Atlas domain: Driver Families / sound/pci.
Implementation status: source implementation candidate.
IRQ or DMA behavior appears here, which is relevant to the selected PCIe/NVMe device path.

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.