5 * Header file for info interface
6 * Copyright (c) by Jaroslav Kysela <perex@suse.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 char *curr; /* current position in buffer */
31 unsigned long size; /* current size */
32 unsigned long 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 unsigned long read_size;
44 unsigned long write_size;
45 void (*read) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
46 void (*write) (struct snd_info_entry *entry, struct snd_info_buffer *buffer);
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 long (*read) (struct snd_info_entry *entry, void *file_private_data,
55 struct file * file, char __user *buf,
56 unsigned long count, unsigned long pos);
57 long (*write) (struct snd_info_entry *entry, void *file_private_data,
58 struct file * file, const char __user *buf,
59 unsigned long count, unsigned long pos);
60 long long (*llseek) (struct snd_info_entry *entry, void *file_private_data,
61 struct file * file, long long offset, int orig);
62 unsigned int (*poll) (struct snd_info_entry *entry, void *file_private_data,
63 struct file * file, poll_table * wait);
64 int (*ioctl) (struct snd_info_entry *entry, void *file_private_data,
65 struct file * file, unsigned int cmd, unsigned long arg);
66 int (*mmap) (struct snd_info_entry *entry, void *file_private_data,
67 struct inode * inode, struct file * file,
68 struct vm_area_struct * vma);
71 struct snd_info_entry {
75 unsigned short content;
76 unsigned short disconnected: 1;
78 struct snd_info_entry_text text;
79 struct snd_info_entry_ops *ops;
81 struct snd_info_entry *parent;
82 struct snd_card *card;
83 struct module *module;
85 void (*private_free)(struct snd_info_entry *entry);
86 struct proc_dir_entry *p;
87 struct semaphore access;
90 int snd_info_check_reserved_words(const char *str);
92 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
93 int snd_info_minor_register(void);
94 int snd_info_minor_unregister(void);
96 #define snd_info_minor_register() /* NOP */
97 #define snd_info_minor_unregister() /* NOP */
101 #ifdef CONFIG_PROC_FS
103 extern struct snd_info_entry *snd_seq_root;
104 #ifdef CONFIG_SND_OSSEMUL
105 extern struct snd_info_entry *snd_oss_root;
107 #define snd_oss_root NULL
110 int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3)));
111 int snd_info_init(void);
112 int snd_info_done(void);
114 int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len);
115 char *snd_info_get_str(char *dest, char *src, int len);
116 struct snd_info_entry *snd_info_create_module_entry(struct module * module,
118 struct snd_info_entry * parent);
119 struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card,
121 struct snd_info_entry * parent);
122 void snd_info_free_entry(struct snd_info_entry * entry);
123 int snd_info_store_text(struct snd_info_entry * entry);
124 int snd_info_restore_text(struct snd_info_entry * entry);
126 int snd_info_card_create(struct snd_card * card);
127 int snd_info_card_register(struct snd_card * card);
128 int snd_info_card_free(struct snd_card * card);
129 int snd_info_register(struct snd_info_entry * entry);
130 int snd_info_unregister(struct snd_info_entry * entry);
132 /* for card drivers */
133 int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp);
135 static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
138 void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
140 entry->private_data = private_data;
141 entry->c.text.read_size = read_size;
142 entry->c.text.read = read;
148 #define snd_seq_root NULL
149 #define snd_oss_root NULL
151 static inline int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) { return 0; }
152 static inline int snd_info_init(void) { return 0; }
153 static inline int snd_info_done(void) { return 0; }
155 static inline int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len) { return 0; }
156 static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
157 static inline struct snd_info_entry *snd_info_create_module_entry(struct module * module, const char *name, struct snd_info_entry * parent) { return NULL; }
158 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; }
159 static inline void snd_info_free_entry(struct snd_info_entry * entry) { ; }
161 static inline int snd_info_card_create(struct snd_card * card) { return 0; }
162 static inline int snd_info_card_register(struct snd_card * card) { return 0; }
163 static inline int snd_info_card_free(struct snd_card * card) { return 0; }
164 static inline int snd_info_register(struct snd_info_entry * entry) { return 0; }
165 static inline int snd_info_unregister(struct snd_info_entry * entry) { return 0; }
167 #define snd_card_proc_new(card,name,entryp) 0 /* always success */
168 #define snd_info_set_text_ops(entry,private_data,read_size,read) /*NOP*/
176 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
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
184 #define SNDRV_OSS_INFO_DEV_COUNT 6
186 int 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)
189 #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
191 #endif /* __SOUND_INFO_H */