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1da177e4 LT |
1 | /* |
2 | * Advanced Linux Sound Architecture | |
3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> | |
4 | * | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <sound/driver.h> | |
23 | #include <linux/init.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/time.h> | |
9a1a2a1d | 26 | #include <linux/device.h> |
1da177e4 LT |
27 | #include <linux/moduleparam.h> |
28 | #include <sound/core.h> | |
29 | #include <sound/minors.h> | |
30 | #include <sound/info.h> | |
31 | #include <sound/version.h> | |
32 | #include <sound/control.h> | |
33 | #include <sound/initval.h> | |
34 | #include <linux/kmod.h> | |
35 | #include <linux/devfs_fs_kernel.h> | |
1da177e4 LT |
36 | |
37 | #define SNDRV_OS_MINORS 256 | |
38 | ||
39 | static int major = CONFIG_SND_MAJOR; | |
40 | int snd_major; | |
41 | static int cards_limit = 1; | |
42 | static int device_mode = S_IFCHR | S_IRUGO | S_IWUGO; | |
43 | ||
44 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); | |
45 | MODULE_DESCRIPTION("Advanced Linux Sound Architecture driver for soundcards."); | |
46 | MODULE_LICENSE("GPL"); | |
47 | module_param(major, int, 0444); | |
48 | MODULE_PARM_DESC(major, "Major # for sound driver."); | |
49 | module_param(cards_limit, int, 0444); | |
50 | MODULE_PARM_DESC(cards_limit, "Count of auto-loadable soundcards."); | |
51 | #ifdef CONFIG_DEVFS_FS | |
52 | module_param(device_mode, int, 0444); | |
53 | MODULE_PARM_DESC(device_mode, "Device file permission mask for devfs."); | |
54 | #endif | |
55 | MODULE_ALIAS_CHARDEV_MAJOR(CONFIG_SND_MAJOR); | |
56 | ||
57 | /* this one holds the actual max. card number currently available. | |
58 | * as default, it's identical with cards_limit option. when more | |
59 | * modules are loaded manually, this limit number increases, too. | |
60 | */ | |
61 | int snd_ecards_limit; | |
62 | ||
6983b724 | 63 | static struct snd_minor *snd_minors[SNDRV_OS_MINORS]; |
1da177e4 LT |
64 | static DECLARE_MUTEX(sound_mutex); |
65 | ||
619e666b | 66 | extern struct class *sound_class; |
1da177e4 LT |
67 | |
68 | ||
69 | #ifdef CONFIG_KMOD | |
70 | ||
71 | /** | |
72 | * snd_request_card - try to load the card module | |
73 | * @card: the card number | |
74 | * | |
75 | * Tries to load the module "snd-card-X" for the given card number | |
76 | * via KMOD. Returns immediately if already loaded. | |
77 | */ | |
78 | void snd_request_card(int card) | |
79 | { | |
80 | int locked; | |
81 | ||
82 | if (! current->fs->root) | |
83 | return; | |
84 | read_lock(&snd_card_rwlock); | |
85 | locked = snd_cards_lock & (1 << card); | |
86 | read_unlock(&snd_card_rwlock); | |
87 | if (locked) | |
88 | return; | |
89 | if (card < 0 || card >= cards_limit) | |
90 | return; | |
91 | request_module("snd-card-%i", card); | |
92 | } | |
93 | ||
94 | static void snd_request_other(int minor) | |
95 | { | |
96 | char *str; | |
97 | ||
98 | if (! current->fs->root) | |
99 | return; | |
100 | switch (minor) { | |
101 | case SNDRV_MINOR_SEQUENCER: str = "snd-seq"; break; | |
102 | case SNDRV_MINOR_TIMER: str = "snd-timer"; break; | |
103 | default: return; | |
104 | } | |
105 | request_module(str); | |
106 | } | |
107 | ||
108 | #endif /* request_module support */ | |
109 | ||
f87135f5 CL |
110 | /** |
111 | * snd_lookup_minor_data - get user data of a registered device | |
112 | * @minor: the minor number | |
113 | * @type: device type (SNDRV_DEVICE_TYPE_XXX) | |
114 | * | |
115 | * Checks that a minor device with the specified type is registered, and returns | |
116 | * its user data pointer. | |
117 | */ | |
118 | void *snd_lookup_minor_data(unsigned int minor, int type) | |
119 | { | |
120 | struct snd_minor *mreg; | |
121 | void *private_data; | |
122 | ||
123 | if (minor > ARRAY_SIZE(snd_minors)) | |
124 | return NULL; | |
125 | down(&sound_mutex); | |
126 | mreg = snd_minors[minor]; | |
127 | if (mreg && mreg->type == type) | |
128 | private_data = mreg->private_data; | |
129 | else | |
130 | private_data = NULL; | |
131 | up(&sound_mutex); | |
132 | return private_data; | |
133 | } | |
134 | ||
1da177e4 LT |
135 | static int snd_open(struct inode *inode, struct file *file) |
136 | { | |
332682b1 | 137 | unsigned int minor = iminor(inode); |
512bbd6a | 138 | struct snd_minor *mptr = NULL; |
1da177e4 LT |
139 | struct file_operations *old_fops; |
140 | int err = 0; | |
141 | ||
332682b1 CL |
142 | if (minor > ARRAY_SIZE(snd_minors)) |
143 | return -ENODEV; | |
144 | mptr = snd_minors[minor]; | |
145 | if (mptr == NULL) { | |
1da177e4 | 146 | #ifdef CONFIG_KMOD |
332682b1 CL |
147 | int dev = SNDRV_MINOR_DEVICE(minor); |
148 | if (dev == SNDRV_MINOR_CONTROL) { | |
149 | /* /dev/aloadC? */ | |
150 | int card = SNDRV_MINOR_CARD(minor); | |
1da177e4 | 151 | if (snd_cards[card] == NULL) |
332682b1 CL |
152 | snd_request_card(card); |
153 | } else if (dev == SNDRV_MINOR_GLOBAL) { | |
154 | /* /dev/aloadSEQ */ | |
1da177e4 | 155 | snd_request_other(minor); |
332682b1 CL |
156 | } |
157 | #ifndef CONFIG_SND_DYNAMIC_MINORS | |
158 | /* /dev/snd/{controlC?,seq} */ | |
159 | mptr = snd_minors[minor]; | |
160 | if (mptr == NULL) | |
161 | #endif | |
1da177e4 | 162 | #endif |
332682b1 | 163 | return -ENODEV; |
1da177e4 | 164 | } |
1da177e4 LT |
165 | old_fops = file->f_op; |
166 | file->f_op = fops_get(mptr->f_ops); | |
167 | if (file->f_op->open) | |
168 | err = file->f_op->open(inode, file); | |
169 | if (err) { | |
170 | fops_put(file->f_op); | |
171 | file->f_op = fops_get(old_fops); | |
172 | } | |
173 | fops_put(old_fops); | |
174 | return err; | |
175 | } | |
176 | ||
177 | static struct file_operations snd_fops = | |
178 | { | |
179 | .owner = THIS_MODULE, | |
180 | .open = snd_open | |
181 | }; | |
182 | ||
332682b1 CL |
183 | #ifdef CONFIG_SND_DYNAMIC_MINORS |
184 | static int snd_find_free_minor(void) | |
185 | { | |
186 | int minor; | |
187 | ||
188 | for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) { | |
189 | /* skip minors still used statically for autoloading devices */ | |
190 | if (SNDRV_MINOR_DEVICE(minor) == SNDRV_MINOR_CONTROL || | |
191 | minor == SNDRV_MINOR_SEQUENCER) | |
192 | continue; | |
193 | if (!snd_minors[minor]) | |
194 | return minor; | |
195 | } | |
196 | return -EBUSY; | |
197 | } | |
198 | #else | |
512bbd6a | 199 | static int snd_kernel_minor(int type, struct snd_card *card, int dev) |
1da177e4 LT |
200 | { |
201 | int minor; | |
202 | ||
203 | switch (type) { | |
204 | case SNDRV_DEVICE_TYPE_SEQUENCER: | |
205 | case SNDRV_DEVICE_TYPE_TIMER: | |
206 | minor = type; | |
207 | break; | |
208 | case SNDRV_DEVICE_TYPE_CONTROL: | |
209 | snd_assert(card != NULL, return -EINVAL); | |
210 | minor = SNDRV_MINOR(card->number, type); | |
211 | break; | |
212 | case SNDRV_DEVICE_TYPE_HWDEP: | |
213 | case SNDRV_DEVICE_TYPE_RAWMIDI: | |
214 | case SNDRV_DEVICE_TYPE_PCM_PLAYBACK: | |
215 | case SNDRV_DEVICE_TYPE_PCM_CAPTURE: | |
216 | snd_assert(card != NULL, return -EINVAL); | |
217 | minor = SNDRV_MINOR(card->number, type + dev); | |
218 | break; | |
219 | default: | |
220 | return -EINVAL; | |
221 | } | |
222 | snd_assert(minor >= 0 && minor < SNDRV_OS_MINORS, return -EINVAL); | |
223 | return minor; | |
224 | } | |
332682b1 | 225 | #endif |
1da177e4 LT |
226 | |
227 | /** | |
228 | * snd_register_device - Register the ALSA device file for the card | |
229 | * @type: the device type, SNDRV_DEVICE_TYPE_XXX | |
230 | * @card: the card instance | |
231 | * @dev: the device index | |
2af677fc | 232 | * @f_ops: the file operations |
f87135f5 | 233 | * @private_data: user pointer for f_ops->open() |
1da177e4 LT |
234 | * @name: the device file name |
235 | * | |
236 | * Registers an ALSA device file for the given card. | |
237 | * The operators have to be set in reg parameter. | |
238 | * | |
239 | * Retrurns zero if successful, or a negative error code on failure. | |
240 | */ | |
2af677fc | 241 | int snd_register_device(int type, struct snd_card *card, int dev, |
f87135f5 CL |
242 | struct file_operations *f_ops, void *private_data, |
243 | const char *name) | |
1da177e4 | 244 | { |
332682b1 | 245 | int minor; |
512bbd6a | 246 | struct snd_minor *preg; |
1da177e4 LT |
247 | struct device *device = NULL; |
248 | ||
1da177e4 | 249 | snd_assert(name, return -EINVAL); |
6983b724 | 250 | preg = kmalloc(sizeof(struct snd_minor) + strlen(name) + 1, GFP_KERNEL); |
1da177e4 LT |
251 | if (preg == NULL) |
252 | return -ENOMEM; | |
2af677fc | 253 | preg->type = type; |
6983b724 | 254 | preg->card = card ? card->number : -1; |
1da177e4 | 255 | preg->device = dev; |
2af677fc | 256 | preg->f_ops = f_ops; |
f87135f5 | 257 | preg->private_data = private_data; |
1da177e4 LT |
258 | strcpy(preg->name, name); |
259 | down(&sound_mutex); | |
332682b1 CL |
260 | #ifdef CONFIG_SND_DYNAMIC_MINORS |
261 | minor = snd_find_free_minor(); | |
262 | #else | |
263 | minor = snd_kernel_minor(type, card, dev); | |
264 | if (minor >= 0 && snd_minors[minor]) | |
265 | minor = -EBUSY; | |
266 | #endif | |
267 | if (minor < 0) { | |
1da177e4 LT |
268 | up(&sound_mutex); |
269 | kfree(preg); | |
332682b1 | 270 | return minor; |
1da177e4 | 271 | } |
6983b724 CL |
272 | snd_minors[minor] = preg; |
273 | if (type != SNDRV_DEVICE_TYPE_CONTROL || preg->card >= cards_limit) | |
1da177e4 | 274 | devfs_mk_cdev(MKDEV(major, minor), S_IFCHR | device_mode, "snd/%s", name); |
3e23c658 | 275 | if (card) |
1da177e4 | 276 | device = card->dev; |
3e23c658 | 277 | class_device_create(sound_class, NULL, MKDEV(major, minor), device, "%s", name); |
1da177e4 LT |
278 | |
279 | up(&sound_mutex); | |
280 | return 0; | |
281 | } | |
282 | ||
283 | /** | |
284 | * snd_unregister_device - unregister the device on the given card | |
285 | * @type: the device type, SNDRV_DEVICE_TYPE_XXX | |
286 | * @card: the card instance | |
287 | * @dev: the device index | |
288 | * | |
289 | * Unregisters the device file already registered via | |
290 | * snd_register_device(). | |
291 | * | |
292 | * Returns zero if sucecessful, or a negative error code on failure | |
293 | */ | |
512bbd6a | 294 | int snd_unregister_device(int type, struct snd_card *card, int dev) |
1da177e4 | 295 | { |
f87135f5 | 296 | int cardnum, minor; |
512bbd6a | 297 | struct snd_minor *mptr; |
1da177e4 | 298 | |
f87135f5 | 299 | cardnum = card ? card->number : -1; |
1da177e4 | 300 | down(&sound_mutex); |
f87135f5 CL |
301 | for (minor = 0; minor < ARRAY_SIZE(snd_minors); ++minor) |
302 | if ((mptr = snd_minors[minor]) != NULL && | |
303 | mptr->type == type && | |
304 | mptr->card == cardnum && | |
305 | mptr->device == dev) | |
306 | break; | |
307 | if (minor == ARRAY_SIZE(snd_minors)) { | |
1da177e4 LT |
308 | up(&sound_mutex); |
309 | return -EINVAL; | |
310 | } | |
311 | ||
6983b724 CL |
312 | if (mptr->type != SNDRV_DEVICE_TYPE_CONTROL || |
313 | mptr->card >= cards_limit) /* created in sound.c */ | |
1da177e4 | 314 | devfs_remove("snd/%s", mptr->name); |
619e666b | 315 | class_device_destroy(sound_class, MKDEV(major, minor)); |
1da177e4 | 316 | |
6983b724 | 317 | snd_minors[minor] = NULL; |
1da177e4 LT |
318 | up(&sound_mutex); |
319 | kfree(mptr); | |
320 | return 0; | |
321 | } | |
322 | ||
e28563cc | 323 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
324 | /* |
325 | * INFO PART | |
326 | */ | |
327 | ||
512bbd6a | 328 | static struct snd_info_entry *snd_minor_info_entry = NULL; |
1da177e4 | 329 | |
2af677fc CL |
330 | static const char *snd_device_type_name(int type) |
331 | { | |
332 | switch (type) { | |
333 | case SNDRV_DEVICE_TYPE_CONTROL: | |
334 | return "control"; | |
335 | case SNDRV_DEVICE_TYPE_HWDEP: | |
336 | return "hardware dependent"; | |
337 | case SNDRV_DEVICE_TYPE_RAWMIDI: | |
338 | return "raw midi"; | |
339 | case SNDRV_DEVICE_TYPE_PCM_PLAYBACK: | |
340 | return "digital audio playback"; | |
341 | case SNDRV_DEVICE_TYPE_PCM_CAPTURE: | |
342 | return "digital audio capture"; | |
343 | case SNDRV_DEVICE_TYPE_SEQUENCER: | |
344 | return "sequencer"; | |
345 | case SNDRV_DEVICE_TYPE_TIMER: | |
346 | return "timer"; | |
347 | default: | |
348 | return "?"; | |
349 | } | |
350 | } | |
351 | ||
512bbd6a | 352 | static void snd_minor_info_read(struct snd_info_entry *entry, struct snd_info_buffer *buffer) |
1da177e4 | 353 | { |
6983b724 | 354 | int minor; |
512bbd6a | 355 | struct snd_minor *mptr; |
1da177e4 LT |
356 | |
357 | down(&sound_mutex); | |
6983b724 CL |
358 | for (minor = 0; minor < SNDRV_OS_MINORS; ++minor) { |
359 | if (!(mptr = snd_minors[minor])) | |
360 | continue; | |
361 | if (mptr->card >= 0) { | |
362 | if (mptr->device >= 0) | |
d001544d | 363 | snd_iprintf(buffer, "%3i: [%2i-%2i]: %s\n", |
6983b724 CL |
364 | minor, mptr->card, mptr->device, |
365 | snd_device_type_name(mptr->type)); | |
366 | else | |
d001544d | 367 | snd_iprintf(buffer, "%3i: [%2i] : %s\n", |
6983b724 CL |
368 | minor, mptr->card, |
369 | snd_device_type_name(mptr->type)); | |
370 | } else | |
d001544d | 371 | snd_iprintf(buffer, "%3i: : %s\n", minor, |
6983b724 | 372 | snd_device_type_name(mptr->type)); |
1da177e4 LT |
373 | } |
374 | up(&sound_mutex); | |
375 | } | |
376 | ||
377 | int __init snd_minor_info_init(void) | |
378 | { | |
512bbd6a | 379 | struct snd_info_entry *entry; |
1da177e4 LT |
380 | |
381 | entry = snd_info_create_module_entry(THIS_MODULE, "devices", NULL); | |
382 | if (entry) { | |
383 | entry->c.text.read_size = PAGE_SIZE; | |
384 | entry->c.text.read = snd_minor_info_read; | |
385 | if (snd_info_register(entry) < 0) { | |
386 | snd_info_free_entry(entry); | |
387 | entry = NULL; | |
388 | } | |
389 | } | |
390 | snd_minor_info_entry = entry; | |
391 | return 0; | |
392 | } | |
393 | ||
394 | int __exit snd_minor_info_done(void) | |
395 | { | |
396 | if (snd_minor_info_entry) | |
397 | snd_info_unregister(snd_minor_info_entry); | |
398 | return 0; | |
399 | } | |
e28563cc | 400 | #endif /* CONFIG_PROC_FS */ |
1da177e4 LT |
401 | |
402 | /* | |
403 | * INIT PART | |
404 | */ | |
405 | ||
406 | static int __init alsa_sound_init(void) | |
407 | { | |
408 | short controlnum; | |
1da177e4 LT |
409 | |
410 | snd_major = major; | |
411 | snd_ecards_limit = cards_limit; | |
1da177e4 LT |
412 | devfs_mk_dir("snd"); |
413 | if (register_chrdev(major, "alsa", &snd_fops)) { | |
414 | snd_printk(KERN_ERR "unable to register native major device number %d\n", major); | |
415 | devfs_remove("snd"); | |
416 | return -EIO; | |
417 | } | |
1da177e4 | 418 | if (snd_info_init() < 0) { |
1da177e4 LT |
419 | unregister_chrdev(major, "alsa"); |
420 | devfs_remove("snd"); | |
421 | return -ENOMEM; | |
422 | } | |
423 | snd_info_minor_register(); | |
424 | for (controlnum = 0; controlnum < cards_limit; controlnum++) | |
425 | devfs_mk_cdev(MKDEV(major, controlnum<<5), S_IFCHR | device_mode, "snd/controlC%d", controlnum); | |
426 | #ifndef MODULE | |
427 | printk(KERN_INFO "Advanced Linux Sound Architecture Driver Version " CONFIG_SND_VERSION CONFIG_SND_DATE ".\n"); | |
428 | #endif | |
429 | return 0; | |
430 | } | |
431 | ||
432 | static void __exit alsa_sound_exit(void) | |
433 | { | |
434 | short controlnum; | |
435 | ||
436 | for (controlnum = 0; controlnum < cards_limit; controlnum++) | |
437 | devfs_remove("snd/controlC%d", controlnum); | |
438 | ||
439 | snd_info_minor_unregister(); | |
440 | snd_info_done(); | |
1da177e4 LT |
441 | if (unregister_chrdev(major, "alsa") != 0) |
442 | snd_printk(KERN_ERR "unable to unregister major device number %d\n", major); | |
443 | devfs_remove("snd"); | |
444 | } | |
445 | ||
446 | module_init(alsa_sound_init) | |
447 | module_exit(alsa_sound_exit) | |
448 | ||
449 | /* sound.c */ | |
450 | EXPORT_SYMBOL(snd_major); | |
451 | EXPORT_SYMBOL(snd_ecards_limit); | |
452 | #if defined(CONFIG_KMOD) | |
453 | EXPORT_SYMBOL(snd_request_card); | |
454 | #endif | |
455 | EXPORT_SYMBOL(snd_register_device); | |
456 | EXPORT_SYMBOL(snd_unregister_device); | |
f87135f5 | 457 | EXPORT_SYMBOL(snd_lookup_minor_data); |
1da177e4 LT |
458 | #if defined(CONFIG_SND_OSSEMUL) |
459 | EXPORT_SYMBOL(snd_register_oss_device); | |
460 | EXPORT_SYMBOL(snd_unregister_oss_device); | |
f87135f5 | 461 | EXPORT_SYMBOL(snd_lookup_oss_minor_data); |
1da177e4 LT |
462 | #endif |
463 | /* memory.c */ | |
1da177e4 LT |
464 | EXPORT_SYMBOL(copy_to_user_fromio); |
465 | EXPORT_SYMBOL(copy_from_user_toio); | |
466 | /* init.c */ | |
467 | EXPORT_SYMBOL(snd_cards); | |
468 | #if defined(CONFIG_SND_MIXER_OSS) || defined(CONFIG_SND_MIXER_OSS_MODULE) | |
469 | EXPORT_SYMBOL(snd_mixer_oss_notify_callback); | |
470 | #endif | |
471 | EXPORT_SYMBOL(snd_card_new); | |
472 | EXPORT_SYMBOL(snd_card_disconnect); | |
473 | EXPORT_SYMBOL(snd_card_free); | |
474 | EXPORT_SYMBOL(snd_card_free_in_thread); | |
475 | EXPORT_SYMBOL(snd_card_register); | |
476 | EXPORT_SYMBOL(snd_component_add); | |
477 | EXPORT_SYMBOL(snd_card_file_add); | |
478 | EXPORT_SYMBOL(snd_card_file_remove); | |
479 | #ifdef CONFIG_PM | |
480 | EXPORT_SYMBOL(snd_power_wait); | |
1da177e4 LT |
481 | #endif |
482 | /* device.c */ | |
483 | EXPORT_SYMBOL(snd_device_new); | |
484 | EXPORT_SYMBOL(snd_device_register); | |
485 | EXPORT_SYMBOL(snd_device_free); | |
1da177e4 | 486 | /* isadma.c */ |
276bd31c | 487 | #ifdef CONFIG_ISA_DMA_API |
1da177e4 LT |
488 | EXPORT_SYMBOL(snd_dma_program); |
489 | EXPORT_SYMBOL(snd_dma_disable); | |
490 | EXPORT_SYMBOL(snd_dma_pointer); | |
491 | #endif | |
492 | /* info.c */ | |
493 | #ifdef CONFIG_PROC_FS | |
494 | EXPORT_SYMBOL(snd_seq_root); | |
495 | EXPORT_SYMBOL(snd_iprintf); | |
496 | EXPORT_SYMBOL(snd_info_get_line); | |
497 | EXPORT_SYMBOL(snd_info_get_str); | |
498 | EXPORT_SYMBOL(snd_info_create_module_entry); | |
499 | EXPORT_SYMBOL(snd_info_create_card_entry); | |
500 | EXPORT_SYMBOL(snd_info_free_entry); | |
501 | EXPORT_SYMBOL(snd_info_register); | |
502 | EXPORT_SYMBOL(snd_info_unregister); | |
503 | EXPORT_SYMBOL(snd_card_proc_new); | |
504 | #endif | |
505 | /* info_oss.c */ | |
506 | #if defined(CONFIG_SND_OSSEMUL) && defined(CONFIG_PROC_FS) | |
507 | EXPORT_SYMBOL(snd_oss_info_register); | |
508 | #endif | |
509 | /* control.c */ | |
510 | EXPORT_SYMBOL(snd_ctl_new); | |
511 | EXPORT_SYMBOL(snd_ctl_new1); | |
512 | EXPORT_SYMBOL(snd_ctl_free_one); | |
513 | EXPORT_SYMBOL(snd_ctl_add); | |
514 | EXPORT_SYMBOL(snd_ctl_remove); | |
515 | EXPORT_SYMBOL(snd_ctl_remove_id); | |
516 | EXPORT_SYMBOL(snd_ctl_rename_id); | |
517 | EXPORT_SYMBOL(snd_ctl_find_numid); | |
518 | EXPORT_SYMBOL(snd_ctl_find_id); | |
519 | EXPORT_SYMBOL(snd_ctl_notify); | |
520 | EXPORT_SYMBOL(snd_ctl_register_ioctl); | |
521 | EXPORT_SYMBOL(snd_ctl_unregister_ioctl); | |
522 | #ifdef CONFIG_COMPAT | |
523 | EXPORT_SYMBOL(snd_ctl_register_ioctl_compat); | |
524 | EXPORT_SYMBOL(snd_ctl_unregister_ioctl_compat); | |
525 | #endif | |
526 | EXPORT_SYMBOL(snd_ctl_elem_read); | |
527 | EXPORT_SYMBOL(snd_ctl_elem_write); | |
528 | /* misc.c */ | |
b1d5776d | 529 | EXPORT_SYMBOL(release_and_free_resource); |
1da177e4 LT |
530 | #ifdef CONFIG_SND_VERBOSE_PRINTK |
531 | EXPORT_SYMBOL(snd_verbose_printk); | |
532 | #endif | |
533 | #if defined(CONFIG_SND_DEBUG) && defined(CONFIG_SND_VERBOSE_PRINTK) | |
534 | EXPORT_SYMBOL(snd_verbose_printd); | |
1da177e4 | 535 | #endif |