/* SPDX-License-Identifier: GPL-2.0-or-later */#ifndef __SOUND_SEQ_OSS_H#define __SOUND_SEQ_OSS_H /* * OSS compatible sequencer driver * * Copyright (C) 1998,99 Takashi Iwai */ #include <sound/asequencer.h>#include <sound/seq_kernel.h> /* * argument structure for synthesizer operations */struct snd_seq_oss_arg {	/* given by OSS sequencer */	int app_index;	/* application unique index */	int file_mode;	/* file mode - see below */	int seq_mode;	/* sequencer mode - see below */ 	/* following must be initialized in open callback */	struct snd_seq_addr addr;	/* opened port address */	void *private_data;	/* private data for lowlevel drivers */ 	/* note-on event passing mode: initially given by OSS seq,	 * but configurable by drivers - see below	 */	int event_passing;};  /* * synthesizer operation callbacks */struct snd_seq_oss_callback {	struct module *owner;	int (*open)(struct snd_seq_oss_arg *p, void *closure);	int (*close)(struct snd_seq_oss_arg *p);	int (*ioctl)(struct snd_seq_oss_arg *p, unsigned int cmd, unsigned long arg);	int (*load_patch)(struct snd_seq_oss_arg *p, int format, const char __user *buf, int offs, int count);	int (*reset)(struct snd_seq_oss_arg *p);	int (*raw_event)(struct snd_seq_oss_arg *p, unsigned char *data);}; /* flag: file_mode */#define SNDRV_SEQ_OSS_FILE_ACMODE		3#define SNDRV_SEQ_OSS_FILE_READ		1#define SNDRV_SEQ_OSS_FILE_WRITE		2#define SNDRV_SEQ_OSS_FILE_NONBLOCK	4 /* flag: seq_mode */#define SNDRV_SEQ_OSS_MODE_SYNTH		0#define SNDRV_SEQ_OSS_MODE_MUSIC		1 /* flag: event_passing */#define SNDRV_SEQ_OSS_PROCESS_EVENTS	0	/* key == 255 is processed as velocity change */#define SNDRV_SEQ_OSS_PASS_EVENTS		1	/* pass all events to callback */#define SNDRV_SEQ_OSS_PROCESS_KEYPRESS	2	/* key >= 128 will be processed as key-pressure */ /* default control rate: fixed */#define SNDRV_SEQ_OSS_CTRLRATE		100 /* default max queue length: configurable by module option */#define SNDRV_SEQ_OSS_MAX_QLEN		1024  /* * data pointer to snd_seq_register_device */struct snd_seq_oss_reg {	int type;	int subtype;	int nvoices;	struct snd_seq_oss_callback oper;	void *private_data;}; /* device id */#define SNDRV_SEQ_DEV_ID_OSS		"seq-oss" #endif /* __SOUND_SEQ_OSS_H */