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@suse.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 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 */ 35 }; 36 37 typedef struct snd_info_buffer snd_info_buffer_t; 38 39 #define SNDRV_INFO_CONTENT_TEXT 0 40 #define SNDRV_INFO_CONTENT_DATA 1 41 42 struct snd_info_entry; 43 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); 49 }; 50 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); 71 }; 72 73 struct snd_info_entry { 74 const char *name; 75 mode_t mode; 76 long size; 77 unsigned short content; 78 unsigned short disconnected: 1; 79 union { 80 struct snd_info_entry_text text; 81 struct snd_info_entry_ops *ops; 82 } c; 83 snd_info_entry_t *parent; 84 snd_card_t *card; 85 struct module *module; 86 void *private_data; 87 void (*private_free)(snd_info_entry_t *entry); 88 struct proc_dir_entry *p; 89 struct semaphore access; 90 }; 91 92 extern int snd_info_check_reserved_words(const char *str); 93 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); 97 #else 98 #define snd_info_minor_register() /* NOP */ 99 #define snd_info_minor_unregister() /* NOP */ 100 #endif 101 102 103 #ifdef CONFIG_PROC_FS 104 105 extern snd_info_entry_t *snd_seq_root; 106 #ifdef CONFIG_SND_OSSEMUL 107 extern snd_info_entry_t *snd_oss_root; 108 #else 109 #define snd_oss_root NULL 110 #endif 111 112 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); 115 116 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, 119 const char *name, 120 snd_info_entry_t * parent); 121 snd_info_entry_t *snd_info_create_card_entry(snd_card_t * card, 122 const char *name, 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); 127 128 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); 133 134 /* for card drivers */ 135 int snd_card_proc_new(snd_card_t *card, const char *name, snd_info_entry_t **entryp); 136 137 static inline void snd_info_set_text_ops(snd_info_entry_t *entry, 138 void *private_data, 139 long read_size, 140 void (*read)(snd_info_entry_t *, snd_info_buffer_t *)) 141 { 142 entry->private_data = private_data; 143 entry->c.text.read_size = read_size; 144 entry->c.text.read = read; 145 } 146 147 148 #else 149 150 #define snd_seq_root NULL 151 #define snd_oss_root NULL 152 153 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; } 156 157 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) { ; } 162 163 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; } 168 169 #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*/ 171 172 #endif 173 174 /* 175 * OSS info part 176 */ 177 178 #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) 179 180 #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 5 185 186 #define SNDRV_OSS_INFO_DEV_COUNT 6 187 188 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) 190 191 #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */ 192 193 #endif /* __SOUND_INFO_H */ 194