sound/hda/common/hda_beep.h

File Facts

System

Linux kernel

Corpus path

sound/hda/common/hda_beep.h

Extension

.h

Size

1223 bytes

Lines

47

Domain

Driver Families

Bucket

sound/hda

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

• sound/hda_codec.h

Detected Declarations

• struct hda_beep
• function snd_hda_attach_beep_device
• function snd_hda_detach_beep_device

Annotated Snippet

struct hda_beep {
	struct input_dev *dev;
	struct hda_codec *codec;
	char phys[32];
	int tone;
	hda_nid_t nid;
	unsigned int registered:1;
	unsigned int enabled:1;
	unsigned int linear_tone:1;	/* linear tone for IDT/STAC codec */
	unsigned int playing:1;
	unsigned int keep_power_at_enable:1;	/* set by driver */
	struct work_struct beep_work; /* scheduled task for beep event */
	void (*power_hook)(struct hda_beep *beep, bool on);
};

#ifdef CONFIG_SND_HDA_INPUT_BEEP
int snd_hda_enable_beep_device(struct hda_codec *codec, int enable);
int snd_hda_attach_beep_device(struct hda_codec *codec, int nid);
void snd_hda_detach_beep_device(struct hda_codec *codec);
#else
static inline int snd_hda_attach_beep_device(struct hda_codec *codec, int nid)
{
	return 0;
}
static inline void snd_hda_detach_beep_device(struct hda_codec *codec)
{
}
#endif
#endif

Annotation

• Immediate include surface: `sound/hda_codec.h`.
• Detected declarations: `struct hda_beep`, `function snd_hda_attach_beep_device`, `function snd_hda_detach_beep_device`.
• Atlas domain: Driver Families / sound/hda.
• 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.