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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 | 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 | |
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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