1#ifndef __SOUND_HWDEP_H
 2#define __SOUND_HWDEP_H
 3
 4/*
 5 *  Hardware dependent layer 
 6 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 7 *
 8 *
 9 *   This program is free software; you can redistribute it and/or modify
10 *   it under the terms of the GNU General Public License as published by
11 *   the Free Software Foundation; either version 2 of the License, or
12 *   (at your option) any later version.
13 *
14 *   This program is distributed in the hope that it will be useful,
15 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
16 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 *   GNU General Public License for more details.
18 *
19 *   You should have received a copy of the GNU General Public License
20 *   along with this program; if not, write to the Free Software
21 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
22 *
23 */
24
25#include <sound/asound.h>
26#include <linux/poll.h>
27
28struct snd_hwdep;
29
30/* hwdep file ops; all ops can be NULL */
31struct snd_hwdep_ops {
32	long long (*llseek)(struct snd_hwdep *hw, struct file *file,
33			    long long offset, int orig);
34	long (*read)(struct snd_hwdep *hw, char __user *buf,
35		     long count, loff_t *offset);
36	long (*write)(struct snd_hwdep *hw, const char __user *buf,
37		      long count, loff_t *offset);
38	int (*open)(struct snd_hwdep *hw, struct file * file);
39	int (*release)(struct snd_hwdep *hw, struct file * file);
40	unsigned int (*poll)(struct snd_hwdep *hw, struct file *file,
41			     poll_table *wait);
42	int (*ioctl)(struct snd_hwdep *hw, struct file *file,
43		     unsigned int cmd, unsigned long arg);
44	int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
45			    unsigned int cmd, unsigned long arg);
46	int (*mmap)(struct snd_hwdep *hw, struct file *file,
47		    struct vm_area_struct *vma);
48	int (*dsp_status)(struct snd_hwdep *hw,
49			  struct snd_hwdep_dsp_status *status);
50	int (*dsp_load)(struct snd_hwdep *hw,
51			struct snd_hwdep_dsp_image *image);
52};
53
54struct snd_hwdep {
55	struct snd_card *card;
56	struct list_head list;
57	int device;
58	char id[32];
59	char name[80];
60	int iface;
61
62#ifdef CONFIG_SND_OSSEMUL
63	char oss_dev[32];
64	int oss_type;
65	int ossreg;
66#endif
67
68	struct snd_hwdep_ops ops;
69	wait_queue_head_t open_wait;
70	void *private_data;
71	void (*private_free) (struct snd_hwdep *hwdep);
 
72
73	struct mutex open_mutex;
74	int used;			/* reference counter */
75	unsigned int dsp_loaded;	/* bit fields of loaded dsp indices */
76	unsigned int exclusive:1;	/* exclusive access mode */
77};
78
79extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
80			 struct snd_hwdep **rhwdep);
81
82#endif /* __SOUND_HWDEP_H */

 1/* SPDX-License-Identifier: GPL-2.0-or-later */
 2#ifndef __SOUND_HWDEP_H
 3#define __SOUND_HWDEP_H
 4
 5/*
 6 *  Hardware dependent layer 
 7 *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 8 */
 9
10#include <sound/asound.h>
11#include <linux/poll.h>
12
13struct snd_hwdep;
14
15/* hwdep file ops; all ops can be NULL */
16struct snd_hwdep_ops {
17	long long (*llseek)(struct snd_hwdep *hw, struct file *file,
18			    long long offset, int orig);
19	long (*read)(struct snd_hwdep *hw, char __user *buf,
20		     long count, loff_t *offset);
21	long (*write)(struct snd_hwdep *hw, const char __user *buf,
22		      long count, loff_t *offset);
23	int (*open)(struct snd_hwdep *hw, struct file * file);
24	int (*release)(struct snd_hwdep *hw, struct file * file);
25	__poll_t (*poll)(struct snd_hwdep *hw, struct file *file,
26			     poll_table *wait);
27	int (*ioctl)(struct snd_hwdep *hw, struct file *file,
28		     unsigned int cmd, unsigned long arg);
29	int (*ioctl_compat)(struct snd_hwdep *hw, struct file *file,
30			    unsigned int cmd, unsigned long arg);
31	int (*mmap)(struct snd_hwdep *hw, struct file *file,
32		    struct vm_area_struct *vma);
33	int (*dsp_status)(struct snd_hwdep *hw,
34			  struct snd_hwdep_dsp_status *status);
35	int (*dsp_load)(struct snd_hwdep *hw,
36			struct snd_hwdep_dsp_image *image);
37};
38
39struct snd_hwdep {
40	struct snd_card *card;
41	struct list_head list;
42	int device;
43	char id[32];
44	char name[80];
45	int iface;
46
47#ifdef CONFIG_SND_OSSEMUL
 
48	int oss_type;
49	int ossreg;
50#endif
51
52	struct snd_hwdep_ops ops;
53	wait_queue_head_t open_wait;
54	void *private_data;
55	void (*private_free) (struct snd_hwdep *hwdep);
56	struct device dev;
57
58	struct mutex open_mutex;
59	int used;			/* reference counter */
60	unsigned int dsp_loaded;	/* bit fields of loaded dsp indices */
61	unsigned int exclusive:1;	/* exclusive access mode */
62};
63
64extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
65			 struct snd_hwdep **rhwdep);
66
67#endif /* __SOUND_HWDEP_H */