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 entry->private_data = private_data; 146 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 */ 203