fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / sound / info.h
blobfecbb1ffd5405ed628cd8f3aafce40318cf7b4fe
1 #ifndef __SOUND_INFO_H
2 #define __SOUND_INFO_H
4 /*
5 * Header file for info interface
6 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
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.
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.
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
25 #include <linux/poll.h>
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 */
37 #define SNDRV_INFO_CONTENT_TEXT 0
38 #define SNDRV_INFO_CONTENT_DATA 1
40 struct snd_info_entry;
42 struct 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);
47 struct 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);
69 struct snd_info_entry {
70 const char *name;
71 mode_t mode;
72 long size;
73 unsigned short content;
74 union {
75 struct snd_info_entry_text text;
76 struct snd_info_entry_ops *ops;
77 } c;
78 struct snd_info_entry *parent;
79 struct snd_card *card;
80 struct module *module;
81 void *private_data;
82 void (*private_free)(struct snd_info_entry *entry);
83 struct proc_dir_entry *p;
84 struct mutex access;
85 struct list_head children;
86 struct list_head list;
89 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
90 int snd_info_minor_register(void);
91 int snd_info_minor_unregister(void);
92 #else
93 #define snd_info_minor_register() /* NOP */
94 #define snd_info_minor_unregister() /* NOP */
95 #endif
98 #ifdef CONFIG_PROC_FS
100 extern struct snd_info_entry *snd_seq_root;
101 #ifdef CONFIG_SND_OSSEMUL
102 extern struct snd_info_entry *snd_oss_root;
103 #else
104 #define snd_oss_root NULL
105 #endif
107 int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3)));
108 int snd_info_init(void);
109 int snd_info_done(void);
111 int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len);
112 char *snd_info_get_str(char *dest, char *src, int len);
113 struct snd_info_entry *snd_info_create_module_entry(struct module * module,
114 const char *name,
115 struct snd_info_entry * parent);
116 struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card,
117 const char *name,
118 struct snd_info_entry * parent);
119 void snd_info_free_entry(struct snd_info_entry * entry);
120 int snd_info_store_text(struct snd_info_entry * entry);
121 int snd_info_restore_text(struct snd_info_entry * entry);
123 int snd_info_card_create(struct snd_card * card);
124 int snd_info_card_register(struct snd_card * card);
125 int snd_info_card_free(struct snd_card * card);
126 void snd_info_card_disconnect(struct snd_card * card);
127 int snd_info_register(struct snd_info_entry * entry);
129 /* for card drivers */
130 int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp);
132 static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
133 void *private_data,
134 void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
136 entry->private_data = private_data;
137 entry->c.text.read = read;
140 int snd_info_check_reserved_words(const char *str);
142 #else
144 #define snd_seq_root NULL
145 #define snd_oss_root NULL
147 static inline int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) { return 0; }
148 static inline int snd_info_init(void) { return 0; }
149 static inline int snd_info_done(void) { return 0; }
151 static inline int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len) { return 0; }
152 static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
153 static inline struct snd_info_entry *snd_info_create_module_entry(struct module * module, const char *name, struct snd_info_entry * parent) { return NULL; }
154 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; }
155 static inline void snd_info_free_entry(struct snd_info_entry * entry) { ; }
157 static inline int snd_info_card_create(struct snd_card * card) { return 0; }
158 static inline int snd_info_card_register(struct snd_card * card) { return 0; }
159 static inline int snd_info_card_free(struct snd_card * card) { return 0; }
160 static inline void snd_info_card_disconnect(struct snd_card * card) { }
161 static inline int snd_info_register(struct snd_info_entry * entry) { return 0; }
163 static inline int snd_card_proc_new(struct snd_card *card, const char *name,
164 struct snd_info_entry **entryp) { return -EINVAL; }
165 static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)),
166 void *private_data,
167 void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {}
169 static inline int snd_info_check_reserved_words(const char *str) { return 1; }
171 #endif
174 * OSS info part
177 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
179 #define SNDRV_OSS_INFO_DEV_AUDIO 0
180 #define SNDRV_OSS_INFO_DEV_SYNTH 1
181 #define SNDRV_OSS_INFO_DEV_MIDI 2
182 #define SNDRV_OSS_INFO_DEV_TIMERS 4
183 #define SNDRV_OSS_INFO_DEV_MIXERS 5
185 #define SNDRV_OSS_INFO_DEV_COUNT 6
187 int snd_oss_info_register(int dev, int num, char *string);
188 #define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
190 #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
192 #endif /* __SOUND_INFO_H */