Linux kernel mirror (for testing)
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1#ifndef __SOUND_INFO_H
2#define __SOUND_INFO_H
3
4/*
5 * Header file for info interface
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 <linux/poll.h>
26
27/* buffer for information */
28struct snd_info_buffer {
29 char *buffer; /* pointer to begin of buffer */
30 unsigned int curr; /* current position in buffer */
31 unsigned int size; /* current size */
32 unsigned int len; /* total length of buffer */
33 int stop; /* stop flag */
34 int error; /* error code */
35};
36
37#define SNDRV_INFO_CONTENT_TEXT 0
38#define SNDRV_INFO_CONTENT_DATA 1
39
40struct snd_info_entry;
41
42struct snd_info_entry_text {
43 void (*read) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
44 void (*write) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
45};
46
47struct snd_info_entry_ops {
48 int (*open) (struct snd_info_entry *entry,
49 unsigned short mode, void **file_private_data);
50 int (*release) (struct snd_info_entry * entry,
51 unsigned short mode, void *file_private_data);
52 long (*read) (struct snd_info_entry *entry, void *file_private_data,
53 struct file * file, char __user *buf,
54 unsigned long count, unsigned long pos);
55 long (*write) (struct snd_info_entry *entry, void *file_private_data,
56 struct file * file, const char __user *buf,
57 unsigned long count, unsigned long pos);
58 long long (*llseek) (struct snd_info_entry *entry, void *file_private_data,
59 struct file * file, long long offset, int orig);
60 unsigned int (*poll) (struct snd_info_entry *entry, void *file_private_data,
61 struct file * file, poll_table * wait);
62 int (*ioctl) (struct snd_info_entry *entry, void *file_private_data,
63 struct file * file, unsigned int cmd, unsigned long arg);
64 int (*mmap) (struct snd_info_entry *entry, void *file_private_data,
65 struct inode * inode, struct file * file,
66 struct vm_area_struct * vma);
67};
68
69struct snd_info_entry {
70 const char *name;
71 mode_t mode;
72 long size;
73 unsigned short content;
74 unsigned short disconnected: 1;
75 union {
76 struct snd_info_entry_text text;
77 struct snd_info_entry_ops *ops;
78 } c;
79 struct snd_info_entry *parent;
80 struct snd_card *card;
81 struct module *module;
82 void *private_data;
83 void (*private_free)(struct snd_info_entry *entry);
84 struct proc_dir_entry *p;
85 struct mutex access;
86};
87
88#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
89int snd_info_minor_register(void);
90int snd_info_minor_unregister(void);
91#else
92#define snd_info_minor_register() /* NOP */
93#define snd_info_minor_unregister() /* NOP */
94#endif
95
96
97#ifdef CONFIG_PROC_FS
98
99extern struct snd_info_entry *snd_seq_root;
100#ifdef CONFIG_SND_OSSEMUL
101extern struct snd_info_entry *snd_oss_root;
102#else
103#define snd_oss_root NULL
104#endif
105
106int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3)));
107int snd_info_init(void);
108int snd_info_done(void);
109
110int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len);
111char *snd_info_get_str(char *dest, char *src, int len);
112struct snd_info_entry *snd_info_create_module_entry(struct module * module,
113 const char *name,
114 struct snd_info_entry * parent);
115struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card,
116 const char *name,
117 struct snd_info_entry * parent);
118void snd_info_free_entry(struct snd_info_entry * entry);
119int snd_info_store_text(struct snd_info_entry * entry);
120int snd_info_restore_text(struct snd_info_entry * entry);
121
122int snd_info_card_create(struct snd_card * card);
123int snd_info_card_register(struct snd_card * card);
124int snd_info_card_free(struct snd_card * card);
125int snd_info_register(struct snd_info_entry * entry);
126int snd_info_unregister(struct snd_info_entry * entry);
127
128/* for card drivers */
129int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp);
130
131static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
132 void *private_data,
133 void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
134{
135 entry->private_data = private_data;
136 entry->c.text.read = read;
137}
138
139int snd_info_check_reserved_words(const char *str);
140
141#else
142
143#define snd_seq_root NULL
144#define snd_oss_root NULL
145
146static inline int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) { return 0; }
147static inline int snd_info_init(void) { return 0; }
148static inline int snd_info_done(void) { return 0; }
149
150static inline int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len) { return 0; }
151static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
152static inline struct snd_info_entry *snd_info_create_module_entry(struct module * module, const char *name, struct snd_info_entry * parent) { return NULL; }
153static inline struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card, const char *name, struct snd_info_entry * parent) { return NULL; }
154static inline void snd_info_free_entry(struct snd_info_entry * entry) { ; }
155
156static inline int snd_info_card_create(struct snd_card * card) { return 0; }
157static inline int snd_info_card_register(struct snd_card * card) { return 0; }
158static inline int snd_info_card_free(struct snd_card * card) { return 0; }
159static inline int snd_info_register(struct snd_info_entry * entry) { return 0; }
160static inline int snd_info_unregister(struct snd_info_entry * entry) { return 0; }
161
162static inline int snd_card_proc_new(struct snd_card *card, const char *name,
163 struct snd_info_entry **entryp) { return -EINVAL; }
164static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)),
165 void *private_data,
166 void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {}
167
168static inline int snd_info_check_reserved_words(const char *str) { return 1; }
169
170#endif
171
172/*
173 * OSS info part
174 */
175
176#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
177
178#define SNDRV_OSS_INFO_DEV_AUDIO 0
179#define SNDRV_OSS_INFO_DEV_SYNTH 1
180#define SNDRV_OSS_INFO_DEV_MIDI 2
181#define SNDRV_OSS_INFO_DEV_TIMERS 4
182#define SNDRV_OSS_INFO_DEV_MIXERS 5
183
184#define SNDRV_OSS_INFO_DEV_COUNT 6
185
186int snd_oss_info_register(int dev, int num, char *string);
187#define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
188
189#endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
190
191#endif /* __SOUND_INFO_H */