/* SPDX-License-Identifier: GPL-2.0-or-later */#ifndef __SOUND_SEQ_DEVICE_H#define __SOUND_SEQ_DEVICE_H /* *  ALSA sequencer device management *  Copyright (c) 1999 by Takashi Iwai <tiwai@suse.de> */ /* * registered device information */ struct snd_seq_device {	/* device info */	struct snd_card *card;	/* sound card */	int device;		/* device number */	const char *id;		/* driver id */	char name[80];		/* device name */	int argsize;		/* size of the argument */	void *driver_data;	/* private data for driver */	void *private_data;	/* private data for the caller */	void (*private_free)(struct snd_seq_device *device);	struct device dev;	unsigned char args[];	/* driver-specific argument */}; #define to_seq_dev(_dev) \	container_of(_dev, struct snd_seq_device, dev) /* sequencer driver */ /* driver operators * probe: *	Initialize the device with given parameters. *	Typically, *		1. call snd_hwdep_new *		2. allocate private data and initialize it *		3. call snd_hwdep_register *		4. store the instance to dev->driver_data pointer. *		 * remove: *	Release the private data. *	Typically, call snd_device_free(dev->card, dev->driver_data) */struct snd_seq_driver {	int (*probe)(struct snd_seq_device *dev);	void (*remove)(struct snd_seq_device *dev);	struct device_driver driver;	char *id;	int argsize;}; #define to_seq_drv(_drv) \	container_of(_drv, struct snd_seq_driver, driver) /* * prototypes */#ifdef CONFIG_MODULESvoid snd_seq_device_load_drivers(void);#else#define snd_seq_device_load_drivers()#endifint snd_seq_device_new(struct snd_card *card, int device, const char *id,		       int argsize, struct snd_seq_device **result); #define SNDRV_SEQ_DEVICE_ARGPTR(dev) ((void *)(dev)->args) int __must_check __snd_seq_driver_register(struct snd_seq_driver *drv,					   struct module *mod);#define snd_seq_driver_register(drv) \	__snd_seq_driver_register(drv, THIS_MODULE)void snd_seq_driver_unregister(struct snd_seq_driver *drv); #define module_snd_seq_driver(drv) \	module_driver(drv, snd_seq_driver_register, snd_seq_driver_unregister) /* * id strings for generic devices */#define SNDRV_SEQ_DEV_ID_MIDISYNTH	"seq-midi"#define SNDRV_SEQ_DEV_ID_OPL3		"opl3-synth"#define SNDRV_SEQ_DEV_ID_UMP		"seq-ump-client" #endif /* __SOUND_SEQ_DEVICE_H */