diff options
Diffstat (limited to 'include/sound/info.h')
| -rw-r--r-- | include/sound/info.h | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/include/sound/info.h b/include/sound/info.h new file mode 100644 index 000000000000..1d76bf3cb05e --- /dev/null +++ b/include/sound/info.h @@ -0,0 +1,193 @@ +#ifndef __SOUND_INFO_H +#define __SOUND_INFO_H + +/* + * Header file for info interface + * Copyright (c) by Jaroslav Kysela <perex@suse.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 */ + char *curr; /* current position in buffer */ + unsigned long size; /* current size */ + unsigned long len; /* total length of buffer */ + int stop; /* stop flag */ + int error; /* error code */ +}; + +typedef struct snd_info_buffer snd_info_buffer_t; + +#define SNDRV_INFO_CONTENT_TEXT 0 +#define SNDRV_INFO_CONTENT_DATA 1 + +struct snd_info_entry; + +struct snd_info_entry_text { + unsigned long read_size; + unsigned long write_size; + void (*read) (snd_info_entry_t *entry, snd_info_buffer_t * buffer); + void (*write) (snd_info_entry_t *entry, snd_info_buffer_t * buffer); +}; + +struct snd_info_entry_ops { + int (*open) (snd_info_entry_t *entry, + unsigned short mode, void **file_private_data); + int (*release) (snd_info_entry_t * entry, + unsigned short mode, void *file_private_data); + long (*read) (snd_info_entry_t *entry, void *file_private_data, + struct file * file, char __user *buf, + unsigned long count, unsigned long pos); + long (*write) (snd_info_entry_t *entry, void *file_private_data, + struct file * file, const char __user *buf, + unsigned long count, unsigned long pos); + long long (*llseek) (snd_info_entry_t *entry, void *file_private_data, + struct file * file, long long offset, int orig); + unsigned int (*poll) (snd_info_entry_t *entry, void *file_private_data, + struct file * file, poll_table * wait); + int (*ioctl) (snd_info_entry_t *entry, void *file_private_data, + struct file * file, unsigned int cmd, unsigned long arg); + int (*mmap) (snd_info_entry_t *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; + unsigned short disconnected: 1; + union { + struct snd_info_entry_text text; + struct snd_info_entry_ops *ops; + } c; + snd_info_entry_t *parent; + snd_card_t *card; + struct module *module; + void *private_data; + void (*private_free)(snd_info_entry_t *entry); + struct proc_dir_entry *p; + struct semaphore access; +}; + +extern int snd_info_check_reserved_words(const char *str); + +#if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) +extern int snd_info_minor_register(void); +extern 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 snd_info_entry_t *snd_seq_root; +#ifdef CONFIG_SND_OSSEMUL +extern snd_info_entry_t *snd_oss_root; +#else +#define snd_oss_root NULL +#endif + +int snd_iprintf(snd_info_buffer_t * buffer, char *fmt,...) __attribute__ ((format (printf, 2, 3))); +int snd_info_init(void); +int snd_info_done(void); + +int snd_info_get_line(snd_info_buffer_t * buffer, char *line, int len); +char *snd_info_get_str(char *dest, char *src, int len); +snd_info_entry_t *snd_info_create_module_entry(struct module * module, + const char *name, + snd_info_entry_t * parent); +snd_info_entry_t *snd_info_create_card_entry(snd_card_t * card, + const char *name, + snd_info_entry_t * parent); +void snd_info_free_entry(snd_info_entry_t * entry); +int snd_info_store_text(snd_info_entry_t * entry); +int snd_info_restore_text(snd_info_entry_t * entry); + +int snd_info_card_create(snd_card_t * card); +int snd_info_card_register(snd_card_t * card); +int snd_info_card_free(snd_card_t * card); +int snd_info_register(snd_info_entry_t * entry); +int snd_info_unregister(snd_info_entry_t * entry); + +/* for card drivers */ +int snd_card_proc_new(snd_card_t *card, const char *name, snd_info_entry_t **entryp); + +static inline void snd_info_set_text_ops(snd_info_entry_t *entry, + void *private_data, + long read_size, + void (*read)(snd_info_entry_t *, snd_info_buffer_t *)) +{ + entry->private_data = private_data; + entry->c.text.read_size = read_size; + entry->c.text.read = read; +} + + +#else + +#define snd_seq_root NULL +#define snd_oss_root NULL + +static inline int snd_iprintf(snd_info_buffer_t * 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(snd_info_buffer_t * buffer, char *line, int len) { return 0; } +static inline char *snd_info_get_str(char *dest, char *src, int len) { return NULL; } +static inline snd_info_entry_t *snd_info_create_module_entry(struct module * module, const char *name, snd_info_entry_t * parent) { return NULL; } +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; } +static inline void snd_info_free_entry(snd_info_entry_t * entry) { ; } + +static inline int snd_info_card_create(snd_card_t * card) { return 0; } +static inline int snd_info_card_register(snd_card_t * card) { return 0; } +static inline int snd_info_card_free(snd_card_t * card) { return 0; } +static inline int snd_info_register(snd_info_entry_t * entry) { return 0; } +static inline int snd_info_unregister(snd_info_entry_t * entry) { return 0; } + +#define snd_card_proc_new(card,name,entryp) 0 /* always success */ +#define snd_info_set_text_ops(entry,private_data,read_size,read) /*NOP*/ + +#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 + +extern 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 */ |