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 typedef struct snd_info_buffer snd_info_buffer_t;
39 #define SNDRV_INFO_CONTENT_TEXT 0
40 #define SNDRV_INFO_CONTENT_DATA 1
42 struct snd_info_entry;
44 struct snd_info_entry_text {
45 unsigned long read_size;
46 unsigned long write_size;
47 void (*read) (snd_info_entry_t *entry, snd_info_buffer_t * buffer);
48 void (*write) (snd_info_entry_t *entry, snd_info_buffer_t * buffer);
51 struct snd_info_entry_ops {
52 int (*open) (snd_info_entry_t *entry,
53 unsigned short mode, void **file_private_data);
54 int (*release) (snd_info_entry_t * entry,
55 unsigned short mode, void *file_private_data);
56 long (*read) (snd_info_entry_t *entry, void *file_private_data,
57 struct file * file, char __user *buf,
58 unsigned long count, unsigned long pos);
59 long (*write) (snd_info_entry_t *entry, void *file_private_data,
60 struct file * file, const char __user *buf,
61 unsigned long count, unsigned long pos);
62 long long (*llseek) (snd_info_entry_t *entry, void *file_private_data,
63 struct file * file, long long offset, int orig);
64 unsigned int (*poll) (snd_info_entry_t *entry, void *file_private_data,
65 struct file * file, poll_table * wait);
66 int (*ioctl) (snd_info_entry_t *entry, void *file_private_data,
67 struct file * file, unsigned int cmd, unsigned long arg);
68 int (*mmap) (snd_info_entry_t *entry, void *file_private_data,
69 struct inode * inode, struct file * file,
70 struct vm_area_struct * vma);
73 struct snd_info_entry {
77 unsigned short content;
78 unsigned short disconnected: 1;
80 struct snd_info_entry_text text;
81 struct snd_info_entry_ops *ops;
83 snd_info_entry_t *parent;
85 struct module *module;
87 void (*private_free)(snd_info_entry_t *entry);
88 struct proc_dir_entry *p;
89 struct semaphore access;
92 extern int snd_info_check_reserved_words(const char *str);
94 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
95 extern int snd_info_minor_register(void);
96 extern int snd_info_minor_unregister(void);
98 #define snd_info_minor_register() /* NOP */
99 #define snd_info_minor_unregister() /* NOP */
103 #ifdef CONFIG_PROC_FS
105 extern snd_info_entry_t *snd_seq_root;
106 #ifdef CONFIG_SND_OSSEMUL
107 extern snd_info_entry_t *snd_oss_root;
109 #define snd_oss_root NULL
112 int snd_iprintf(snd_info_buffer_t * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3)));
113 int snd_info_init(void);
114 int snd_info_done(void);
116 int snd_info_get_line(snd_info_buffer_t * buffer, char *line, int len);
117 char *snd_info_get_str(char *dest, char *src, int len);
118 snd_info_entry_t *snd_info_create_module_entry(struct module * module,
120 snd_info_entry_t * parent);
121 snd_info_entry_t *snd_info_create_card_entry(snd_card_t * card,
123 snd_info_entry_t * parent);
124 void snd_info_free_entry(snd_info_entry_t * entry);
125 int snd_info_store_text(snd_info_entry_t * entry);
126 int snd_info_restore_text(snd_info_entry_t * entry);
128 int snd_info_card_create(snd_card_t * card);
129 int snd_info_card_register(snd_card_t * card);
130 int snd_info_card_free(snd_card_t * card);
131 int snd_info_register(snd_info_entry_t * entry);
132 int snd_info_unregister(snd_info_entry_t * entry);
134 /* for card drivers */
135 int snd_card_proc_new(snd_card_t *card, const char *name, snd_info_entry_t **entryp);
137 static inline void snd_info_set_text_ops(snd_info_entry_t *entry,
140 void (*read)(snd_info_entry_t *, snd_info_buffer_t *))
142 entry->private_data = private_data;
143 entry->c.text.read_size = read_size;
144 entry->c.text.read = read;
150 #define snd_seq_root NULL
151 #define snd_oss_root NULL
153 static inline int snd_iprintf(snd_info_buffer_t * buffer, char *fmt,...) { return 0; }
154 static inline int snd_info_init(void) { return 0; }
155 static inline int snd_info_done(void) { return 0; }
157 static inline int snd_info_get_line(snd_info_buffer_t * buffer, char *line, int len) { return 0; }
158 static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
159 static inline snd_info_entry_t *snd_info_create_module_entry(struct module * module, const char *name, snd_info_entry_t * parent) { return NULL; }
160 static inline snd_info_entry_t *snd_info_create_card_entry(snd_card_t * card, const char *name, snd_info_entry_t * parent) { return NULL; }
161 static inline void snd_info_free_entry(snd_info_entry_t * entry) { ; }
163 static inline int snd_info_card_create(snd_card_t * card) { return 0; }
164 static inline int snd_info_card_register(snd_card_t * card) { return 0; }
165 static inline int snd_info_card_free(snd_card_t * card) { return 0; }
166 static inline int snd_info_register(snd_info_entry_t * entry) { return 0; }
167 static inline int snd_info_unregister(snd_info_entry_t * entry) { return 0; }
169 #define snd_card_proc_new(card,name,entryp) 0 /* always success */
170 #define snd_info_set_text_ops(entry,private_data,read_size,read) /*NOP*/
178 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS)
180 #define SNDRV_OSS_INFO_DEV_AUDIO 0
181 #define SNDRV_OSS_INFO_DEV_SYNTH 1
182 #define SNDRV_OSS_INFO_DEV_MIDI 2
183 #define SNDRV_OSS_INFO_DEV_TIMERS 4
184 #define SNDRV_OSS_INFO_DEV_MIXERS 5
186 #define SNDRV_OSS_INFO_DEV_COUNT 6
188 extern int snd_oss_info_register(int dev, int num, char *string);
189 #define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
191 #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */
193 #endif /* __SOUND_INFO_H */