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, struct snd_info_buffer *buffer); 44 void (*write) (struct snd_info_entry *entry, struct snd_info_buffer *buffer); 45 }; 46 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); 67 }; 68 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; 87 }; 88 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 96 97 98 #ifdef CONFIG_PROC_FS 99 100 extern struct snd_info_entry *snd_seq_root; 101 #ifdef CONFIG_SND_OSSEMUL 102 extern struct snd_info_entry *snd_oss_root; 103 void snd_card_info_read_oss(struct snd_info_buffer *buffer); 104 #else 105 #define snd_oss_root NULL 106 static inline void snd_card_info_read_oss(struct snd_info_buffer *buffer) {} 107 #endif 108 109 int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3))); 110 int snd_info_init(void); 111 int snd_info_done(void); 112 113 int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len); 114 char *snd_info_get_str(char *dest, char *src, int len); 115 struct snd_info_entry *snd_info_create_module_entry(struct module * module, 116 const char *name, 117 struct snd_info_entry * parent); 118 struct snd_info_entry *snd_info_create_card_entry(struct snd_card * card, 119 const char *name, 120 struct snd_info_entry * parent); 121 void snd_info_free_entry(struct snd_info_entry * entry); 122 int snd_info_store_text(struct snd_info_entry * entry); 123 int snd_info_restore_text(struct snd_info_entry * entry); 124 125 int snd_info_card_create(struct snd_card * card); 126 int snd_info_card_register(struct snd_card * card); 127 int snd_info_card_free(struct snd_card * card); 128 void snd_info_card_disconnect(struct snd_card * card); 129 int snd_info_register(struct snd_info_entry * entry); 130 131 /* for card drivers */ 132 int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp); 133 134 static inline void snd_info_set_text_ops(struct snd_info_entry *entry, 135 void *private_data, 136 void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) 137 { 138 entry->private_data = private_data; 139 entry->c.text.read = read; 140 } 141 142 int snd_info_check_reserved_words(const char *str); 143 144 #else 145 146 #define snd_seq_root NULL 147 #define snd_oss_root NULL 148 149 static inline int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) { return 0; } 150 static inline int snd_info_init(void) { return 0; } 151 static inline int snd_info_done(void) { return 0; } 152 153 static inline int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len) { return 0; } 154 static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; } 155 static inline struct snd_info_entry *snd_info_create_module_entry(struct module * module, const char *name, struct snd_info_entry * parent) { return NULL; } 156 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; } 157 static inline void snd_info_free_entry(struct snd_info_entry * entry) { ; } 158 159 static inline int snd_info_card_create(struct snd_card * card) { return 0; } 160 static inline int snd_info_card_register(struct snd_card * card) { return 0; } 161 static inline int snd_info_card_free(struct snd_card * card) { return 0; } 162 static inline void snd_info_card_disconnect(struct snd_card * card) { } 163 static inline int snd_info_register(struct snd_info_entry * entry) { return 0; } 164 165 static inline int snd_card_proc_new(struct snd_card *card, const char *name, 166 struct snd_info_entry **entryp) { return -EINVAL; } 167 static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)), 168 void *private_data, 169 void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {} 170 171 static inline int snd_info_check_reserved_words(const char *str) { return 1; } 172 173 #endif 174 175 /* 176 * OSS info part 177 */ 178 179 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) 180 181 #define SNDRV_OSS_INFO_DEV_AUDIO 0 182 #define SNDRV_OSS_INFO_DEV_SYNTH 1 183 #define SNDRV_OSS_INFO_DEV_MIDI 2 184 #define SNDRV_OSS_INFO_DEV_TIMERS 4 185 #define SNDRV_OSS_INFO_DEV_MIXERS 5 186 187 #define SNDRV_OSS_INFO_DEV_COUNT 6 188 189 int snd_oss_info_register(int dev, int num, char *string); 190 #define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL) 191 192 #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */ 193 194 #endif /* __SOUND_INFO_H */ 195