sound/drivers/opl3/opl3_voice.h

File Facts

System

Linux kernel

Corpus path

sound/drivers/opl3/opl3_voice.h

Extension

.h

Size

1824 bytes

Lines

47

Domain

Driver Families

Bucket

sound/drivers

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/opl3.h

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#ifndef __OPL3_VOICE_H
#define __OPL3_VOICE_H

/*
 *  Copyright (c) 2000 Uros Bizjak <uros@kss-loka.si>
 */

#include <sound/opl3.h>

/* Prototypes for opl3_seq.c */
int snd_opl3_synth_use_inc(struct snd_opl3 * opl3);
void snd_opl3_synth_use_dec(struct snd_opl3 * opl3);
int snd_opl3_synth_setup(struct snd_opl3 * opl3);
void snd_opl3_synth_cleanup(struct snd_opl3 * opl3);

/* Prototypes for opl3_midi.c */
void snd_opl3_note_on(void *p, int note, int vel, struct snd_midi_channel *chan);
void snd_opl3_note_off(void *p, int note, int vel, struct snd_midi_channel *chan);
void snd_opl3_key_press(void *p, int note, int vel, struct snd_midi_channel *chan);
void snd_opl3_terminate_note(void *p, int note, struct snd_midi_channel *chan);
void snd_opl3_control(void *p, int type, struct snd_midi_channel *chan);
void snd_opl3_nrpn(void *p, struct snd_midi_channel *chan, struct snd_midi_channel_set *chset);
void snd_opl3_sysex(void *p, unsigned char *buf, int len, int parsed, struct snd_midi_channel_set *chset);

void snd_opl3_calc_volume(unsigned char *reg, int vel, struct snd_midi_channel *chan);
void snd_opl3_timer_func(struct timer_list *t);

/* Prototypes for opl3_drums.c */
void snd_opl3_load_drums(struct snd_opl3 *opl3);
void snd_opl3_drum_switch(struct snd_opl3 *opl3, int note, int vel, int on_off, struct snd_midi_channel *chan);

/* Prototypes for opl3_oss.c */
#if IS_ENABLED(CONFIG_SND_SEQUENCER_OSS)
void snd_opl3_init_seq_oss(struct snd_opl3 *opl3, char *name);
void snd_opl3_free_seq_oss(struct snd_opl3 *opl3);
#else
#define snd_opl3_init_seq_oss(opl3, name) /* NOP */
#define snd_opl3_free_seq_oss(opl3) /* NOP */
#endif

extern char snd_opl3_regmap[MAX_OPL2_VOICES][4];
extern bool use_internal_drums;
extern const struct snd_midi_op opl3_ops;

#endif

Annotation

• Immediate include surface: `sound/opl3.h`.
• Atlas domain: Driver Families / sound/drivers.
• 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.