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usr
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src
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linux-headers-6.8.0-36-generic
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include
/
sound
/ [
drwxr-xr-x
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hwdep.h
/* SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __SOUND_HWDEP_H #define __SOUND_HWDEP_H /* * Hardware dependent layer * Copyright (c) by Jaroslav Kysela <perex@perex.cz> */ #include <sound/asound.h> #include <linux/poll.h> struct snd_hwdep; /* hwdep file ops; all ops can be NULL */ struct snd_hwdep_ops { long long (*llseek)(struct snd_hwdep *hw, struct file *file, long long offset, int orig); long (*read)(struct snd_hwdep *hw, char __user *buf, long count, loff_t *offset); long (*write)(struct snd_hwdep *hw, const char __user *buf, long count, loff_t *offset); int (*open)(struct snd_hwdep *hw, struct file * file); int (*release)(struct snd_hwdep *hw, struct file * file); __poll_t (*poll)(struct snd_hwdep *hw, struct file *file, poll_table *wait); int (*ioctl)(struct snd_hwdep *hw, struct file *file, unsigned int cmd, unsigned long arg); int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file, unsigned int cmd, unsigned long arg); int (*mmap)(struct snd_hwdep *hw, struct file *file, struct vm_area_struct *vma); int (*dsp_status)(struct snd_hwdep *hw, struct snd_hwdep_dsp_status *status); int (*dsp_load)(struct snd_hwdep *hw, struct snd_hwdep_dsp_image *image); }; struct snd_hwdep { struct snd_card *card; struct list_head list; int device; char id[32]; char name[80]; int iface; #ifdef CONFIG_SND_OSSEMUL int oss_type; int ossreg; #endif struct snd_hwdep_ops ops; wait_queue_head_t open_wait; void *private_data; void (*private_free) (struct snd_hwdep *hwdep); struct device *dev; struct mutex open_mutex; int used; /* reference counter */ unsigned int dsp_loaded; /* bit fields of loaded dsp indices */ unsigned int exclusive:1; /* exclusive access mode */ }; extern int snd_hwdep_new(struct snd_card *card, char *id, int device, struct snd_hwdep **rhwdep); #endif /* __SOUND_HWDEP_H */
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