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- /* 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 <[email protected]>
- */
- /*
- * 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;
- };
- #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 {
- struct device_driver driver;
- char *id;
- int argsize;
- };
- #define to_seq_drv(_drv) \
- container_of(_drv, struct snd_seq_driver, driver)
- /*
- * prototypes
- */
- #ifdef CONFIG_MODULES
- void snd_seq_device_load_drivers(void);
- #else
- #define snd_seq_device_load_drivers()
- #endif
- int 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 *)((char *)(dev) + sizeof(struct snd_seq_device))
- 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"
- #endif /* __SOUND_SEQ_DEVICE_H */
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