forked from mirrors/linux
897c8882df
Like control and PCM devices, it's better to avoid the embedded struct device for hwdep (although it's more or less well working), too. Change it to allocate via snd_device_alloc(), and free the memory at the common snd_hwdep_free(). Reviewed-by: Jaroslav Kysela <perex@perex.cz> Signed-off-by: Curtis Malainey <cujomalainey@chromium.org> Tested-by: Curtis Malainey <cujomalainey@chromium.org> Link: https://lore.kernel.org/r/20230816160252.23396-5-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de>
67 lines
1.9 KiB
C
67 lines
1.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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#ifndef __SOUND_HWDEP_H
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#define __SOUND_HWDEP_H
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/*
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* Hardware dependent layer
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* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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*/
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#include <sound/asound.h>
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#include <linux/poll.h>
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struct snd_hwdep;
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/* hwdep file ops; all ops can be NULL */
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struct snd_hwdep_ops {
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long long (*llseek)(struct snd_hwdep *hw, struct file *file,
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long long offset, int orig);
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long (*read)(struct snd_hwdep *hw, char __user *buf,
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long count, loff_t *offset);
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long (*write)(struct snd_hwdep *hw, const char __user *buf,
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long count, loff_t *offset);
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int (*open)(struct snd_hwdep *hw, struct file * file);
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int (*release)(struct snd_hwdep *hw, struct file * file);
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__poll_t (*poll)(struct snd_hwdep *hw, struct file *file,
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poll_table *wait);
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int (*ioctl)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
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unsigned int cmd, unsigned long arg);
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int (*mmap)(struct snd_hwdep *hw, struct file *file,
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struct vm_area_struct *vma);
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int (*dsp_status)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_status *status);
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int (*dsp_load)(struct snd_hwdep *hw,
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struct snd_hwdep_dsp_image *image);
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};
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struct snd_hwdep {
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struct snd_card *card;
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struct list_head list;
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int device;
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char id[32];
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char name[80];
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int iface;
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#ifdef CONFIG_SND_OSSEMUL
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int oss_type;
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int ossreg;
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#endif
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struct snd_hwdep_ops ops;
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wait_queue_head_t open_wait;
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void *private_data;
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void (*private_free) (struct snd_hwdep *hwdep);
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struct device *dev;
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struct mutex open_mutex;
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int used; /* reference counter */
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unsigned int dsp_loaded; /* bit fields of loaded dsp indices */
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unsigned int exclusive:1; /* exclusive access mode */
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};
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extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
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struct snd_hwdep **rhwdep);
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#endif /* __SOUND_HWDEP_H */
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