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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@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 <linux/poll.h>
26 : :
27 : : /* buffer for information */
28 : : struct 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 : :
40 : : struct snd_info_entry;
41 : :
42 : : struct snd_info_entry_text {
43 : : void (*read)(struct snd_info_entry *entry,
44 : : struct snd_info_buffer *buffer);
45 : : void (*write)(struct snd_info_entry *entry,
46 : : struct snd_info_buffer *buffer);
47 : : };
48 : :
49 : : struct snd_info_entry_ops {
50 : : int (*open)(struct snd_info_entry *entry,
51 : : unsigned short mode, void **file_private_data);
52 : : int (*release)(struct snd_info_entry *entry,
53 : : unsigned short mode, void *file_private_data);
54 : : ssize_t (*read)(struct snd_info_entry *entry, void *file_private_data,
55 : : struct file *file, char __user *buf,
56 : : size_t count, loff_t pos);
57 : : ssize_t (*write)(struct snd_info_entry *entry, void *file_private_data,
58 : : struct file *file, const char __user *buf,
59 : : size_t count, loff_t pos);
60 : : loff_t (*llseek)(struct snd_info_entry *entry,
61 : : void *file_private_data, struct file *file,
62 : : loff_t offset, int orig);
63 : : unsigned int (*poll)(struct snd_info_entry *entry,
64 : : void *file_private_data, struct file *file,
65 : : poll_table *wait);
66 : : int (*ioctl)(struct snd_info_entry *entry, void *file_private_data,
67 : : struct file *file, unsigned int cmd, unsigned long arg);
68 : : int (*mmap)(struct snd_info_entry *entry, void *file_private_data,
69 : : struct inode *inode, struct file *file,
70 : : struct vm_area_struct *vma);
71 : : };
72 : :
73 : : struct snd_info_entry {
74 : : const char *name;
75 : : umode_t mode;
76 : : long size;
77 : : unsigned short content;
78 : : union {
79 : : struct snd_info_entry_text text;
80 : : struct snd_info_entry_ops *ops;
81 : : } c;
82 : : struct snd_info_entry *parent;
83 : : struct snd_card *card;
84 : : struct module *module;
85 : : void *private_data;
86 : : void (*private_free)(struct snd_info_entry *entry);
87 : : struct proc_dir_entry *p;
88 : : struct mutex access;
89 : : struct list_head children;
90 : : struct list_head list;
91 : : };
92 : :
93 : : #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
94 : : int snd_info_minor_register(void);
95 : : int snd_info_minor_unregister(void);
96 : : #else
97 : : #define snd_info_minor_register() /* NOP */
98 : : #define snd_info_minor_unregister() /* NOP */
99 : : #endif
100 : :
101 : :
102 : : #ifdef CONFIG_PROC_FS
103 : :
104 : : extern struct snd_info_entry *snd_seq_root;
105 : : #ifdef CONFIG_SND_OSSEMUL
106 : : extern struct snd_info_entry *snd_oss_root;
107 : : void snd_card_info_read_oss(struct snd_info_buffer *buffer);
108 : : #else
109 : : #define snd_oss_root NULL
110 : : static inline void snd_card_info_read_oss(struct snd_info_buffer *buffer) {}
111 : : #endif
112 : :
113 : : __printf(2, 3)
114 : : int snd_iprintf(struct snd_info_buffer *buffer, const char *fmt, ...);
115 : : int snd_info_init(void);
116 : : int snd_info_done(void);
117 : :
118 : : int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len);
119 : : const char *snd_info_get_str(char *dest, const char *src, int len);
120 : : struct snd_info_entry *snd_info_create_module_entry(struct module *module,
121 : : const char *name,
122 : : struct snd_info_entry *parent);
123 : : struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card,
124 : : const char *name,
125 : : struct snd_info_entry *parent);
126 : : void snd_info_free_entry(struct snd_info_entry *entry);
127 : : int snd_info_store_text(struct snd_info_entry *entry);
128 : : int snd_info_restore_text(struct snd_info_entry *entry);
129 : :
130 : : int snd_info_card_create(struct snd_card *card);
131 : : int snd_info_card_register(struct snd_card *card);
132 : : int snd_info_card_free(struct snd_card *card);
133 : : void snd_info_card_disconnect(struct snd_card *card);
134 : : void snd_info_card_id_change(struct snd_card *card);
135 : : int snd_info_register(struct snd_info_entry *entry);
136 : :
137 : : /* for card drivers */
138 : : int snd_card_proc_new(struct snd_card *card, const char *name,
139 : : struct snd_info_entry **entryp);
140 : :
141 : : static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
142 : : void *private_data,
143 : : void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
144 : : {
145 : 0 : entry->private_data = private_data;
146 : 0 : entry->c.text.read = read;
147 : : }
148 : :
149 : : int snd_info_check_reserved_words(const char *str);
150 : :
151 : : #else
152 : :
153 : : #define snd_seq_root NULL
154 : : #define snd_oss_root NULL
155 : :
156 : : static inline int snd_iprintf(struct snd_info_buffer *buffer, char *fmt, ...) { return 0; }
157 : : static inline int snd_info_init(void) { return 0; }
158 : : static inline int snd_info_done(void) { return 0; }
159 : :
160 : : static inline int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) { return 0; }
161 : : static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
162 : : static inline struct snd_info_entry *snd_info_create_module_entry(struct module *module, const char *name, struct snd_info_entry *parent) { return NULL; }
163 : : static inline struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card, const char *name, struct snd_info_entry *parent) { return NULL; }
164 : : static inline void snd_info_free_entry(struct snd_info_entry *entry) { ; }
165 : :
166 : : static inline int snd_info_card_create(struct snd_card *card) { return 0; }
167 : : static inline int snd_info_card_register(struct snd_card *card) { return 0; }
168 : : static inline int snd_info_card_free(struct snd_card *card) { return 0; }
169 : : static inline void snd_info_card_disconnect(struct snd_card *card) { }
170 : : static inline void snd_info_card_id_change(struct snd_card *card) { }
171 : : static inline int snd_info_register(struct snd_info_entry *entry) { return 0; }
172 : :
173 : : static inline int snd_card_proc_new(struct snd_card *card, const char *name,
174 : : struct snd_info_entry **entryp) { return -EINVAL; }
175 : : static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)),
176 : : void *private_data,
177 : : void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {}
178 : :
179 : : static inline int snd_info_check_reserved_words(const char *str) { return 1; }
180 : :
181 : : #endif
182 : :
183 : : /*
184 : : * OSS info part
185 : : */
186 : :
187 : : #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
188 : :
189 : : #define SNDRV_OSS_INFO_DEV_AUDIO 0
190 : : #define SNDRV_OSS_INFO_DEV_SYNTH 1
191 : : #define SNDRV_OSS_INFO_DEV_MIDI 2
192 : : #define SNDRV_OSS_INFO_DEV_TIMERS 4
193 : : #define SNDRV_OSS_INFO_DEV_MIXERS 5
194 : :
195 : : #define SNDRV_OSS_INFO_DEV_COUNT 6
196 : :
197 : : int snd_oss_info_register(int dev, int num, char *string);
198 : : #define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
199 : :
200 : : #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
201 : :
202 : : #endif /* __SOUND_INFO_H */
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