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
28 struct snd_hwdep;
29
30 /* hwdep file ops; all ops can be NULL */
31 struct 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
54 struct 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 int oss_type;
64 int ossreg;
65 #endif
66
67 struct snd_hwdep_ops ops;
68 wait_queue_head_t open_wait;
69 void *private_data;
70 void (*private_free) (struct snd_hwdep *hwdep);
71 struct device dev;
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
79 extern int snd_hwdep_new(struct snd_card *card, char *id, int device,
80 struct snd_hwdep **rhwdep);
81
82 #endif /* __SOUND_HWDEP_H */
83
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