1 #ifndef __SOUND_HWDEP_H
2 #define __SOUND_HWDEP_H
3
4 /*
5 * Hardware dependent layer
6 * Copyright (c) by Jaroslav Kysela <perex@suse.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 typedef enum sndrv_hwdep_iface snd_hwdep_iface_t;
29 typedef struct sndrv_hwdep_info snd_hwdep_info_t;
30 typedef struct sndrv_hwdep_dsp_status snd_hwdep_dsp_status_t;
31 typedef struct sndrv_hwdep_dsp_image snd_hwdep_dsp_image_t;
32
33 typedef struct _snd_hwdep_ops {
34 long long (*llseek) (snd_hwdep_t *hw, struct file * file, long long offset, int orig);
35 long (*read) (snd_hwdep_t * hw, char __user *buf, long count, loff_t *offset);
36 long (*write) (snd_hwdep_t * hw, const char __user *buf, long count, loff_t *offset);
37 int (*open) (snd_hwdep_t * hw, struct file * file);
38 int (*release) (snd_hwdep_t * hw, struct file * file);
39 unsigned int (*poll) (snd_hwdep_t * hw, struct file * file, poll_table * wait);
40 int (*ioctl) (snd_hwdep_t * hw, struct file * file, unsigned int cmd, unsigned long arg);
41 int (*mmap) (snd_hwdep_t * hw, struct file * file, struct vm_area_struct * vma);
42 int (*dsp_status) (snd_hwdep_t * hw, snd_hwdep_dsp_status_t * status);
43 int (*dsp_load) (snd_hwdep_t * hw, snd_hwdep_dsp_image_t * image);
44 } snd_hwdep_ops_t;
45
46 struct _snd_hwdep {
47 snd_card_t *card;
48 int device;
49 char id[32];
50 char name[80];
51 int iface;
52
53 #ifdef CONFIG_SND_OSSEMUL
54 char oss_dev[32];
55 int oss_type;
56 int ossreg;
57 #endif
58
59 snd_hwdep_ops_t ops;
60 wait_queue_head_t open_wait;
61 void *private_data;
62 void (*private_free) (snd_hwdep_t *hwdep);
63
64 struct semaphore open_mutex;
65 int used;
66 unsigned int dsp_loaded;
67 unsigned int exclusive: 1;
68 };
69
70 extern int snd_hwdep_new(snd_card_t * card, char *id, int device, snd_hwdep_t ** rhwdep);
71
72 #endif /* __SOUND_HWDEP_H */
73
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