| #ifndef __SOUND_INFO_H |
| #define __SOUND_INFO_H |
| |
| /* |
| * Header file for info interface |
| * Copyright (c) by Jaroslav Kysela <perex@perex.cz> |
| * |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include <linux/poll.h> |
| #include <linux/seq_file.h> |
| #include <sound/core.h> |
| |
| /* buffer for information */ |
| struct snd_info_buffer { |
| char *buffer; /* pointer to begin of buffer */ |
| unsigned int curr; /* current position in buffer */ |
| unsigned int size; /* current size */ |
| unsigned int len; /* total length of buffer */ |
| int stop; /* stop flag */ |
| int error; /* error code */ |
| }; |
| |
| #define SNDRV_INFO_CONTENT_TEXT 0 |
| #define SNDRV_INFO_CONTENT_DATA 1 |
| |
| struct snd_info_entry; |
| |
| struct snd_info_entry_text { |
| void (*read)(struct snd_info_entry *entry, |
| struct snd_info_buffer *buffer); |
| void (*write)(struct snd_info_entry *entry, |
| struct snd_info_buffer *buffer); |
| }; |
| |
| struct snd_info_entry_ops { |
| int (*open)(struct snd_info_entry *entry, |
| unsigned short mode, void **file_private_data); |
| int (*release)(struct snd_info_entry *entry, |
| unsigned short mode, void *file_private_data); |
| ssize_t (*read)(struct snd_info_entry *entry, void *file_private_data, |
| struct file *file, char __user *buf, |
| size_t count, loff_t pos); |
| ssize_t (*write)(struct snd_info_entry *entry, void *file_private_data, |
| struct file *file, const char __user *buf, |
| size_t count, loff_t pos); |
| loff_t (*llseek)(struct snd_info_entry *entry, |
| void *file_private_data, struct file *file, |
| loff_t offset, int orig); |
| unsigned int (*poll)(struct snd_info_entry *entry, |
| void *file_private_data, struct file *file, |
| poll_table *wait); |
| int (*ioctl)(struct snd_info_entry *entry, void *file_private_data, |
| struct file *file, unsigned int cmd, unsigned long arg); |
| int (*mmap)(struct snd_info_entry *entry, void *file_private_data, |
| struct inode *inode, struct file *file, |
| struct vm_area_struct *vma); |
| }; |
| |
| struct snd_info_entry { |
| const char *name; |
| umode_t mode; |
| long size; |
| unsigned short content; |
| union { |
| struct snd_info_entry_text text; |
| struct snd_info_entry_ops *ops; |
| } c; |
| struct snd_info_entry *parent; |
| struct snd_card *card; |
| struct module *module; |
| void *private_data; |
| void (*private_free)(struct snd_info_entry *entry); |
| struct proc_dir_entry *p; |
| struct mutex access; |
| struct list_head children; |
| struct list_head list; |
| }; |
| |
| #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) |
| int snd_info_minor_register(void); |
| int snd_info_minor_unregister(void); |
| #else |
| #define snd_info_minor_register() /* NOP */ |
| #define snd_info_minor_unregister() /* NOP */ |
| #endif |
| |
| |
| #ifdef CONFIG_PROC_FS |
| |
| extern struct snd_info_entry *snd_seq_root; |
| #ifdef CONFIG_SND_OSSEMUL |
| extern struct snd_info_entry *snd_oss_root; |
| void snd_card_info_read_oss(struct snd_info_buffer *buffer); |
| #else |
| #define snd_oss_root NULL |
| static inline void snd_card_info_read_oss(struct snd_info_buffer *buffer) {} |
| #endif |
| |
| /** |
| * snd_iprintf - printf on the procfs buffer |
| * @buf: the procfs buffer |
| * @fmt: the printf format |
| * |
| * Outputs the string on the procfs buffer just like printf(). |
| * |
| * Return: zero for success, or a negative error code. |
| */ |
| #define snd_iprintf(buf, fmt, args...) \ |
| seq_printf((struct seq_file *)(buf)->buffer, fmt, ##args) |
| |
| int snd_info_init(void); |
| int snd_info_done(void); |
| |
| int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len); |
| const char *snd_info_get_str(char *dest, const char *src, int len); |
| struct snd_info_entry *snd_info_create_module_entry(struct module *module, |
| const char *name, |
| struct snd_info_entry *parent); |
| struct snd_info_entry *snd_info_create_card_entry(struct snd_card *card, |
| const char *name, |
| struct snd_info_entry *parent); |
| void snd_info_free_entry(struct snd_info_entry *entry); |
| int snd_info_store_text(struct snd_info_entry *entry); |
| int snd_info_restore_text(struct snd_info_entry *entry); |
| |
| int snd_info_card_create(struct snd_card *card); |
| int snd_info_card_register(struct snd_card *card); |
| int snd_info_card_free(struct snd_card *card); |
| void snd_info_card_disconnect(struct snd_card *card); |
| void snd_info_card_id_change(struct snd_card *card); |
| int snd_info_register(struct snd_info_entry *entry); |
| |
| /* for card drivers */ |
| static inline int snd_card_proc_new(struct snd_card *card, const char *name, |
| struct snd_info_entry **entryp) |
| { |
| *entryp = snd_info_create_card_entry(card, name, card->proc_root); |
| return *entryp ? 0 : -ENOMEM; |
| } |
| |
| static inline void snd_info_set_text_ops(struct snd_info_entry *entry, |
| void *private_data, |
| void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) |
| { |
| entry->private_data = private_data; |
| entry->c.text.read = read; |
| } |
| |
| int snd_info_check_reserved_words(const char *str); |
| |
| #else |
| |
| #define snd_seq_root NULL |
| #define snd_oss_root NULL |
| |
| static inline int snd_iprintf(struct snd_info_buffer *buffer, char *fmt, ...) { return 0; } |
| static inline int snd_info_init(void) { return 0; } |
| static inline int snd_info_done(void) { return 0; } |
| |
| static inline int snd_info_get_line(struct snd_info_buffer *buffer, char *line, int len) { return 0; } |
| static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; } |
| static inline struct snd_info_entry *snd_info_create_module_entry(struct module *module, const char *name, struct snd_info_entry *parent) { return NULL; } |
| 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; } |
| static inline void snd_info_free_entry(struct snd_info_entry *entry) { ; } |
| |
| static inline int snd_info_card_create(struct snd_card *card) { return 0; } |
| static inline int snd_info_card_register(struct snd_card *card) { return 0; } |
| static inline int snd_info_card_free(struct snd_card *card) { return 0; } |
| static inline void snd_info_card_disconnect(struct snd_card *card) { } |
| static inline void snd_info_card_id_change(struct snd_card *card) { } |
| static inline int snd_info_register(struct snd_info_entry *entry) { return 0; } |
| |
| static inline int snd_card_proc_new(struct snd_card *card, const char *name, |
| struct snd_info_entry **entryp) { return -EINVAL; } |
| static inline void snd_info_set_text_ops(struct snd_info_entry *entry __attribute__((unused)), |
| void *private_data, |
| void (*read)(struct snd_info_entry *, struct snd_info_buffer *)) {} |
| static inline int snd_info_check_reserved_words(const char *str) { return 1; } |
| |
| #endif |
| |
| /* |
| * OSS info part |
| */ |
| |
| #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) |
| |
| #define SNDRV_OSS_INFO_DEV_AUDIO 0 |
| #define SNDRV_OSS_INFO_DEV_SYNTH 1 |
| #define SNDRV_OSS_INFO_DEV_MIDI 2 |
| #define SNDRV_OSS_INFO_DEV_TIMERS 4 |
| #define SNDRV_OSS_INFO_DEV_MIXERS 5 |
| |
| #define SNDRV_OSS_INFO_DEV_COUNT 6 |
| |
| int snd_oss_info_register(int dev, int num, char *string); |
| #define snd_oss_info_unregister(dev, num) snd_oss_info_register(dev, num, NULL) |
| |
| #endif /* CONFIG_SND_OSSEMUL && CONFIG_PROC_FS */ |
| |
| #endif /* __SOUND_INFO_H */ |