#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> /* 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); long (*read) (struct snd_info_entry *entry, void *file_private_data, struct file * file, char __user *buf, unsigned long count, unsigned long pos); long (*write) (struct snd_info_entry *entry, void *file_private_data, struct file * file, const char __user *buf, unsigned long count, unsigned long pos); long long (*llseek) (struct snd_info_entry *entry, void *file_private_data, struct file * file, long long 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; mode_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 int snd_iprintf(struct snd_info_buffer * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3))); int snd_info_init(void); int snd_info_done(void); int snd_info_get_line(struct snd_info_buffer * buffer, char *line, int len); char *snd_info_get_str(char *dest, 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); int snd_info_register(struct snd_info_entry * entry); /* for card drivers */ int snd_card_proc_new(struct snd_card *card, const char *name, struct snd_info_entry **entryp); 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 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 */