Home Home > GIT Browse
summaryrefslogtreecommitdiff
blob: 1d76bf3cb05e0f5df00d003c9bb219f1379df9ab (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
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 */