~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/include/sound/info.h

Version: ~ [ linux-5.12 ] ~ [ linux-5.11.16 ] ~ [ linux-5.10.32 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.114 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.188 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.231 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.267 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.267 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 #include <linux/seq_file.h>
 27 #include <sound/core.h>
 28 
 29 /* buffer for information */
 30 struct snd_info_buffer {
 31         char *buffer;           /* pointer to begin of buffer */
 32         unsigned int curr;      /* current position in buffer */
 33         unsigned int size;      /* current size */
 34         unsigned int len;       /* total length of buffer */
 35         int stop;               /* stop flag */
 36         int error;              /* error code */
 37 };
 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         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 
 51 struct 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         __poll_t (*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 
 75 struct 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)
 96 int 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 
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 /**
114  * snd_iprintf - printf on the procfs buffer
115  * @buf: the procfs buffer
116  * @fmt: the printf format
117  *
118  * Outputs the string on the procfs buffer just like printf().
119  *
120  * Return: zero for success, or a negative error code.
121  */
122 #define snd_iprintf(buf, fmt, args...) \
123         seq_printf((struct seq_file *)(buf)->buffer, fmt, ##args)
124 
125 int snd_info_init(void);
126 int snd_info_done(void);
127 
128 int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len);
129 const char *snd_info_get_str(char *dest, const char *src, int len);
130 struct snd_info_entry *snd_info_create_module_entry(struct module *module,
131                                                const char *name,
132                                                struct snd_info_entry *parent);
133 struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card,
134                                              const char *name,
135                                              struct snd_info_entry *parent);
136 void snd_info_free_entry(struct snd_info_entry *entry);
137 int snd_info_store_text(struct snd_info_entry *entry);
138 int snd_info_restore_text(struct snd_info_entry *entry);
139 
140 int snd_info_card_create(struct snd_card *card);
141 int snd_info_card_register(struct snd_card *card);
142 int snd_info_card_free(struct snd_card *card);
143 void snd_info_card_disconnect(struct snd_card *card);
144 void snd_info_card_id_change(struct snd_card *card);
145 int snd_info_register(struct snd_info_entry *entry);
146 
147 /* for card drivers */
148 static 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 
155 static 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 
163 int 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 
170 static inline int snd_iprintf(struct snd_info_buffer *buffer, char *fmt, ...) { return 0; }
171 static inline int snd_info_init(void) { return 0; }
172 static inline int snd_info_done(void) { return 0; }
173 
174 static inline int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) { return 0; }
175 static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; }
176 static inline struct snd_info_entry *snd_info_create_module_entry(struct module *module, const char *name, struct snd_info_entry *parent) { return NULL; }
177 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; }
178 static inline void snd_info_free_entry(struct snd_info_entry *entry) { ; }
179 
180 static inline int snd_info_card_create(struct snd_card *card) { return 0; }
181 static inline int snd_info_card_register(struct snd_card *card) { return 0; }
182 static inline int snd_info_card_free(struct snd_card *card) { return 0; }
183 static inline void snd_info_card_disconnect(struct snd_card *card) { }
184 static inline void snd_info_card_id_change(struct snd_card *card) { }
185 static inline int snd_info_register(struct snd_info_entry *entry) { return 0; }
186 
187 static inline int snd_card_proc_new(struct snd_card *card, const char *name,
188                                     struct snd_info_entry **entryp) { return -EINVAL; }
189 static 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 *)) {}
192 static inline int snd_info_check_reserved_words(const char *str) { return 1; }
193 
194 #endif
195 
196 /*
197  * OSS info part
198  */
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 
210 int 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 /* CONFIG_SND_OSSEMUL && CONFIG_SND_PROC_FS */
214 
215 #endif /* __SOUND_INFO_H */
216 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp