1#ifndef __SOUND_INFO_H
2#define __SOUND_INFO_H
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25#include <linux/poll.h>
26#include <linux/seq_file.h>
27#include <sound/core.h>
28
29
30struct snd_info_buffer {
31 char *buffer;
32 unsigned int curr;
33 unsigned int size;
34 unsigned int len;
35 int stop;
36 int error;
37};
38
39#define SNDRV_INFO_CONTENT_TEXT 0
40#define SNDRV_INFO_CONTENT_DATA 1
41
42struct snd_info_entry;
43
44struct snd_info_entry_text {
45 void (*read)(struct snd_info_entry *entry,
46 struct snd_info_buffer *buffer);
47 void (*write)(struct snd_info_entry *entry,
48 struct snd_info_buffer *buffer);
49};
50
51struct snd_info_entry_ops {
52 int (*open)(struct snd_info_entry *entry,
53 unsigned short mode, void **file_private_data);
54 int (*release)(struct snd_info_entry *entry,
55 unsigned short mode, void *file_private_data);
56 ssize_t (*read)(struct snd_info_entry *entry, void *file_private_data,
57 struct file *file, char __user *buf,
58 size_t count, loff_t pos);
59 ssize_t (*write)(struct snd_info_entry *entry, void *file_private_data,
60 struct file *file, const char __user *buf,
61 size_t count, loff_t pos);
62 loff_t (*llseek)(struct snd_info_entry *entry,
63 void *file_private_data, struct file *file,
64 loff_t offset, int orig);
65 unsigned int (*poll)(struct snd_info_entry *entry,
66 void *file_private_data, struct file *file,
67 poll_table *wait);
68 int (*ioctl)(struct snd_info_entry *entry, void *file_private_data,
69 struct file *file, unsigned int cmd, unsigned long arg);
70 int (*mmap)(struct snd_info_entry *entry, void *file_private_data,
71 struct inode *inode, struct file *file,
72 struct vm_area_struct *vma);
73};
74
75struct snd_info_entry {
76 const char *name;
77 umode_t mode;
78 long size;
79 unsigned short content;
80 union {
81 struct snd_info_entry_text text;
82 struct snd_info_entry_ops *ops;
83 } c;
84 struct snd_info_entry *parent;
85 struct snd_card *card;
86 struct module *module;
87 void *private_data;
88 void (*private_free)(struct snd_info_entry *entry);
89 struct proc_dir_entry *p;
90 struct mutex access;
91 struct list_head children;
92 struct list_head list;
93};
94
95#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_SND_PROC_FS)
96int snd_info_minor_register(void);
97#else
98#define snd_info_minor_register() 0
99#endif
100
101
102#ifdef CONFIG_SND_PROC_FS
103
104extern struct snd_info_entry *snd_seq_root;
105#ifdef CONFIG_SND_OSSEMUL
106extern struct snd_info_entry *snd_oss_root;
107void snd_card_info_read_oss(struct snd_info_buffer *buffer);
108#else
109#define snd_oss_root NULL
110static inline void snd_card_info_read_oss(struct snd_info_buffer *buffer) {}
111#endif
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121
122#define snd_iprintf(buf, fmt, args...) \
123 seq_printf((struct seq_file *)(buf)->buffer, fmt, ##args)
124
125int snd_info_init(void);
126int snd_info_done(void);
127
128int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len);
129const char *snd_info_get_str(char *dest, const char *src, int len);
130struct snd_info_entry *snd_info_create_module_entry(struct module *module,
131 const char *name,
132 struct snd_info_entry *parent);
133struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card,
134 const char *name,
135 struct snd_info_entry *parent);
136void snd_info_free_entry(struct snd_info_entry *entry);
137int snd_info_store_text(struct snd_info_entry *entry);
138int snd_info_restore_text(struct snd_info_entry *entry);
139
140int snd_info_card_create(struct snd_card *card);
141int snd_info_card_register(struct snd_card *card);
142int snd_info_card_free(struct snd_card *card);
143void snd_info_card_disconnect(struct snd_card *card);
144void snd_info_card_id_change(struct snd_card *card);
145int snd_info_register(struct snd_info_entry *entry);
146
147
148static inline int snd_card_proc_new(struct snd_card *card, const char *name,
149 struct snd_info_entry **entryp)
150{
151 *entryp = snd_info_create_card_entry(card, name, card->proc_root);
152 return *entryp ? 0 : -ENOMEM;
153}
154
155static inline void snd_info_set_text_ops(struct snd_info_entry *entry,
156 void *private_data,
157 void (*read)(struct snd_info_entry *, struct snd_info_buffer *))
158{
159 entry->private_data = private_data;
160 entry->c.text.read = read;
161}
162
163int snd_info_check_reserved_words(const char *str);
164
165#else
166
167#define snd_seq_root NULL
168#define snd_oss_root NULL
169
170static inline int snd_iprintf(struct snd_info_buffer *buffer, char *fmt, ...) { return 0; }
171static inline int snd_info_init(void) { return 0; }
172static inline int snd_info_done(void) { return 0; }
173
174static inline int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) { return 0; }
175static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
176static inline struct snd_info_entry *snd_info_create_module_entry(struct module *module, const char *name, struct snd_info_entry *parent) { return NULL; }
177static inline struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card, const char *name, struct snd_info_entry *parent) { return NULL; }
178static inline void snd_info_free_entry(struct snd_info_entry *entry) { ; }
179
180static inline int snd_info_card_create(struct snd_card *card) { return 0; }
181static inline int snd_info_card_register(struct snd_card *card) { return 0; }
182static inline int snd_info_card_free(struct snd_card *card) { return 0; }
183static inline void snd_info_card_disconnect(struct snd_card *card) { }
184static inline void snd_info_card_id_change(struct snd_card *card) { }
185static inline int snd_info_register(struct snd_info_entry *entry) { return 0; }
186
187static inline int snd_card_proc_new(struct snd_card *card, const char *name,
188 struct snd_info_entry **entryp) { return -EINVAL; }
189static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)),
190 void *private_data,
191 void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {}
192static inline int snd_info_check_reserved_words(const char *str) { return 1; }
193
194#endif
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199
200#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_SND_PROC_FS)
201
202#define SNDRV_OSS_INFO_DEV_AUDIO 0
203#define SNDRV_OSS_INFO_DEV_SYNTH 1
204#define SNDRV_OSS_INFO_DEV_MIDI 2
205#define SNDRV_OSS_INFO_DEV_TIMERS 4
206#define SNDRV_OSS_INFO_DEV_MIXERS 5
207
208#define SNDRV_OSS_INFO_DEV_COUNT 6
209
210int snd_oss_info_register(int dev, int num, char *string);
211#define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL)
212
213#endif
214
215#endif
216