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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Hardware dependent layer | |
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/major.h> | |
24 | #include <linux/init.h> | |
1da177e4 LT |
25 | #include <linux/slab.h> |
26 | #include <linux/time.h> | |
1a60d4c5 | 27 | #include <linux/mutex.h> |
1da177e4 LT |
28 | #include <sound/core.h> |
29 | #include <sound/control.h> | |
30 | #include <sound/minors.h> | |
31 | #include <sound/hwdep.h> | |
32 | #include <sound/info.h> | |
33 | ||
34 | MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>"); | |
35 | MODULE_DESCRIPTION("Hardware dependent layer"); | |
36 | MODULE_LICENSE("GPL"); | |
37 | ||
f87135f5 | 38 | static LIST_HEAD(snd_hwdep_devices); |
1a60d4c5 | 39 | static DEFINE_MUTEX(register_mutex); |
1da177e4 | 40 | |
d9a98de2 TI |
41 | static int snd_hwdep_free(struct snd_hwdep *hwdep); |
42 | static int snd_hwdep_dev_free(struct snd_device *device); | |
43 | static int snd_hwdep_dev_register(struct snd_device *device); | |
c461482c | 44 | static int snd_hwdep_dev_disconnect(struct snd_device *device); |
1da177e4 | 45 | |
1da177e4 | 46 | |
f87135f5 CL |
47 | static struct snd_hwdep *snd_hwdep_search(struct snd_card *card, int device) |
48 | { | |
f87135f5 CL |
49 | struct snd_hwdep *hwdep; |
50 | ||
9244b2c3 | 51 | list_for_each_entry(hwdep, &snd_hwdep_devices, list) |
f87135f5 CL |
52 | if (hwdep->card == card && hwdep->device == device) |
53 | return hwdep; | |
f87135f5 CL |
54 | return NULL; |
55 | } | |
1da177e4 LT |
56 | |
57 | static loff_t snd_hwdep_llseek(struct file * file, loff_t offset, int orig) | |
58 | { | |
d9a98de2 | 59 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
60 | if (hw->ops.llseek) |
61 | return hw->ops.llseek(hw, file, offset, orig); | |
62 | return -ENXIO; | |
63 | } | |
64 | ||
d9a98de2 TI |
65 | static ssize_t snd_hwdep_read(struct file * file, char __user *buf, |
66 | size_t count, loff_t *offset) | |
1da177e4 | 67 | { |
d9a98de2 | 68 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
69 | if (hw->ops.read) |
70 | return hw->ops.read(hw, buf, count, offset); | |
71 | return -ENXIO; | |
72 | } | |
73 | ||
d9a98de2 TI |
74 | static ssize_t snd_hwdep_write(struct file * file, const char __user *buf, |
75 | size_t count, loff_t *offset) | |
1da177e4 | 76 | { |
d9a98de2 | 77 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
78 | if (hw->ops.write) |
79 | return hw->ops.write(hw, buf, count, offset); | |
80 | return -ENXIO; | |
81 | } | |
82 | ||
83 | static int snd_hwdep_open(struct inode *inode, struct file * file) | |
84 | { | |
85 | int major = imajor(inode); | |
d9a98de2 | 86 | struct snd_hwdep *hw; |
1da177e4 LT |
87 | int err; |
88 | wait_queue_t wait; | |
89 | ||
f1902860 | 90 | if (major == snd_major) { |
f87135f5 CL |
91 | hw = snd_lookup_minor_data(iminor(inode), |
92 | SNDRV_DEVICE_TYPE_HWDEP); | |
1da177e4 | 93 | #ifdef CONFIG_SND_OSSEMUL |
f1902860 | 94 | } else if (major == SOUND_MAJOR) { |
f87135f5 CL |
95 | hw = snd_lookup_oss_minor_data(iminor(inode), |
96 | SNDRV_OSS_DEVICE_TYPE_DMFM); | |
1da177e4 | 97 | #endif |
f1902860 | 98 | } else |
1da177e4 | 99 | return -ENXIO; |
1da177e4 LT |
100 | if (hw == NULL) |
101 | return -ENODEV; | |
102 | ||
103 | if (!hw->ops.open) | |
104 | return -ENXIO; | |
1da177e4 LT |
105 | |
106 | if (!try_module_get(hw->card->module)) | |
107 | return -EFAULT; | |
108 | ||
109 | init_waitqueue_entry(&wait, current); | |
110 | add_wait_queue(&hw->open_wait, &wait); | |
1a60d4c5 | 111 | mutex_lock(&hw->open_mutex); |
1da177e4 LT |
112 | while (1) { |
113 | if (hw->exclusive && hw->used > 0) { | |
114 | err = -EBUSY; | |
115 | break; | |
116 | } | |
117 | err = hw->ops.open(hw, file); | |
118 | if (err >= 0) | |
119 | break; | |
120 | if (err == -EAGAIN) { | |
121 | if (file->f_flags & O_NONBLOCK) { | |
122 | err = -EBUSY; | |
123 | break; | |
124 | } | |
125 | } else | |
126 | break; | |
127 | set_current_state(TASK_INTERRUPTIBLE); | |
1a60d4c5 | 128 | mutex_unlock(&hw->open_mutex); |
1da177e4 | 129 | schedule(); |
1a60d4c5 | 130 | mutex_lock(&hw->open_mutex); |
1da177e4 LT |
131 | if (signal_pending(current)) { |
132 | err = -ERESTARTSYS; | |
133 | break; | |
134 | } | |
135 | } | |
136 | remove_wait_queue(&hw->open_wait, &wait); | |
137 | if (err >= 0) { | |
138 | err = snd_card_file_add(hw->card, file); | |
139 | if (err >= 0) { | |
140 | file->private_data = hw; | |
141 | hw->used++; | |
142 | } else { | |
143 | if (hw->ops.release) | |
144 | hw->ops.release(hw, file); | |
145 | } | |
146 | } | |
1a60d4c5 | 147 | mutex_unlock(&hw->open_mutex); |
1da177e4 LT |
148 | if (err < 0) |
149 | module_put(hw->card->module); | |
150 | return err; | |
151 | } | |
152 | ||
153 | static int snd_hwdep_release(struct inode *inode, struct file * file) | |
154 | { | |
155 | int err = -ENXIO; | |
d9a98de2 | 156 | struct snd_hwdep *hw = file->private_data; |
104326f8 | 157 | struct module *mod = hw->card->module; |
8fa58af7 | 158 | |
1a60d4c5 | 159 | mutex_lock(&hw->open_mutex); |
8fa58af7 | 160 | if (hw->ops.release) |
1da177e4 | 161 | err = hw->ops.release(hw, file); |
1da177e4 LT |
162 | if (hw->used > 0) |
163 | hw->used--; | |
1a60d4c5 | 164 | mutex_unlock(&hw->open_mutex); |
8fa58af7 KW |
165 | wake_up(&hw->open_wait); |
166 | ||
167 | snd_card_file_remove(hw->card, file); | |
104326f8 | 168 | module_put(mod); |
1da177e4 LT |
169 | return err; |
170 | } | |
171 | ||
172 | static unsigned int snd_hwdep_poll(struct file * file, poll_table * wait) | |
173 | { | |
d9a98de2 | 174 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
175 | if (hw->ops.poll) |
176 | return hw->ops.poll(hw, file, wait); | |
177 | return 0; | |
178 | } | |
179 | ||
d9a98de2 TI |
180 | static int snd_hwdep_info(struct snd_hwdep *hw, |
181 | struct snd_hwdep_info __user *_info) | |
1da177e4 | 182 | { |
d9a98de2 | 183 | struct snd_hwdep_info info; |
1da177e4 LT |
184 | |
185 | memset(&info, 0, sizeof(info)); | |
186 | info.card = hw->card->number; | |
187 | strlcpy(info.id, hw->id, sizeof(info.id)); | |
188 | strlcpy(info.name, hw->name, sizeof(info.name)); | |
189 | info.iface = hw->iface; | |
190 | if (copy_to_user(_info, &info, sizeof(info))) | |
191 | return -EFAULT; | |
192 | return 0; | |
193 | } | |
194 | ||
d9a98de2 TI |
195 | static int snd_hwdep_dsp_status(struct snd_hwdep *hw, |
196 | struct snd_hwdep_dsp_status __user *_info) | |
1da177e4 | 197 | { |
d9a98de2 | 198 | struct snd_hwdep_dsp_status info; |
1da177e4 LT |
199 | int err; |
200 | ||
201 | if (! hw->ops.dsp_status) | |
202 | return -ENXIO; | |
203 | memset(&info, 0, sizeof(info)); | |
204 | info.dsp_loaded = hw->dsp_loaded; | |
205 | if ((err = hw->ops.dsp_status(hw, &info)) < 0) | |
206 | return err; | |
207 | if (copy_to_user(_info, &info, sizeof(info))) | |
208 | return -EFAULT; | |
209 | return 0; | |
210 | } | |
211 | ||
d9a98de2 TI |
212 | static int snd_hwdep_dsp_load(struct snd_hwdep *hw, |
213 | struct snd_hwdep_dsp_image __user *_info) | |
1da177e4 | 214 | { |
d9a98de2 | 215 | struct snd_hwdep_dsp_image info; |
1da177e4 LT |
216 | int err; |
217 | ||
218 | if (! hw->ops.dsp_load) | |
219 | return -ENXIO; | |
220 | memset(&info, 0, sizeof(info)); | |
221 | if (copy_from_user(&info, _info, sizeof(info))) | |
222 | return -EFAULT; | |
223 | /* check whether the dsp was already loaded */ | |
224 | if (hw->dsp_loaded & (1 << info.index)) | |
225 | return -EBUSY; | |
226 | if (!access_ok(VERIFY_READ, info.image, info.length)) | |
227 | return -EFAULT; | |
228 | err = hw->ops.dsp_load(hw, &info); | |
229 | if (err < 0) | |
230 | return err; | |
231 | hw->dsp_loaded |= (1 << info.index); | |
232 | return 0; | |
233 | } | |
234 | ||
d9a98de2 TI |
235 | static long snd_hwdep_ioctl(struct file * file, unsigned int cmd, |
236 | unsigned long arg) | |
1da177e4 | 237 | { |
d9a98de2 | 238 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
239 | void __user *argp = (void __user *)arg; |
240 | switch (cmd) { | |
241 | case SNDRV_HWDEP_IOCTL_PVERSION: | |
242 | return put_user(SNDRV_HWDEP_VERSION, (int __user *)argp); | |
243 | case SNDRV_HWDEP_IOCTL_INFO: | |
244 | return snd_hwdep_info(hw, argp); | |
245 | case SNDRV_HWDEP_IOCTL_DSP_STATUS: | |
246 | return snd_hwdep_dsp_status(hw, argp); | |
247 | case SNDRV_HWDEP_IOCTL_DSP_LOAD: | |
248 | return snd_hwdep_dsp_load(hw, argp); | |
249 | } | |
250 | if (hw->ops.ioctl) | |
251 | return hw->ops.ioctl(hw, file, cmd, arg); | |
252 | return -ENOTTY; | |
253 | } | |
254 | ||
255 | static int snd_hwdep_mmap(struct file * file, struct vm_area_struct * vma) | |
256 | { | |
d9a98de2 | 257 | struct snd_hwdep *hw = file->private_data; |
1da177e4 LT |
258 | if (hw->ops.mmap) |
259 | return hw->ops.mmap(hw, file, vma); | |
260 | return -ENXIO; | |
261 | } | |
262 | ||
d9a98de2 TI |
263 | static int snd_hwdep_control_ioctl(struct snd_card *card, |
264 | struct snd_ctl_file * control, | |
1da177e4 LT |
265 | unsigned int cmd, unsigned long arg) |
266 | { | |
1da177e4 LT |
267 | switch (cmd) { |
268 | case SNDRV_CTL_IOCTL_HWDEP_NEXT_DEVICE: | |
269 | { | |
270 | int device; | |
271 | ||
272 | if (get_user(device, (int __user *)arg)) | |
273 | return -EFAULT; | |
1a60d4c5 | 274 | mutex_lock(®ister_mutex); |
1da177e4 LT |
275 | device = device < 0 ? 0 : device + 1; |
276 | while (device < SNDRV_MINOR_HWDEPS) { | |
f87135f5 | 277 | if (snd_hwdep_search(card, device)) |
1da177e4 LT |
278 | break; |
279 | device++; | |
280 | } | |
281 | if (device >= SNDRV_MINOR_HWDEPS) | |
282 | device = -1; | |
1a60d4c5 | 283 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
284 | if (put_user(device, (int __user *)arg)) |
285 | return -EFAULT; | |
286 | return 0; | |
287 | } | |
288 | case SNDRV_CTL_IOCTL_HWDEP_INFO: | |
289 | { | |
d9a98de2 | 290 | struct snd_hwdep_info __user *info = (struct snd_hwdep_info __user *)arg; |
f87135f5 | 291 | int device, err; |
d9a98de2 | 292 | struct snd_hwdep *hwdep; |
1da177e4 LT |
293 | |
294 | if (get_user(device, &info->device)) | |
295 | return -EFAULT; | |
1a60d4c5 | 296 | mutex_lock(®ister_mutex); |
f87135f5 CL |
297 | hwdep = snd_hwdep_search(card, device); |
298 | if (hwdep) | |
299 | err = snd_hwdep_info(hwdep, info); | |
300 | else | |
301 | err = -ENXIO; | |
1a60d4c5 | 302 | mutex_unlock(®ister_mutex); |
f87135f5 | 303 | return err; |
1da177e4 LT |
304 | } |
305 | } | |
306 | return -ENOIOCTLCMD; | |
307 | } | |
308 | ||
309 | #ifdef CONFIG_COMPAT | |
310 | #include "hwdep_compat.c" | |
311 | #else | |
312 | #define snd_hwdep_ioctl_compat NULL | |
313 | #endif | |
314 | ||
315 | /* | |
316 | ||
317 | */ | |
318 | ||
9c2e08c5 | 319 | static const struct file_operations snd_hwdep_f_ops = |
1da177e4 LT |
320 | { |
321 | .owner = THIS_MODULE, | |
322 | .llseek = snd_hwdep_llseek, | |
323 | .read = snd_hwdep_read, | |
324 | .write = snd_hwdep_write, | |
325 | .open = snd_hwdep_open, | |
326 | .release = snd_hwdep_release, | |
327 | .poll = snd_hwdep_poll, | |
328 | .unlocked_ioctl = snd_hwdep_ioctl, | |
329 | .compat_ioctl = snd_hwdep_ioctl_compat, | |
330 | .mmap = snd_hwdep_mmap, | |
331 | }; | |
332 | ||
1da177e4 LT |
333 | /** |
334 | * snd_hwdep_new - create a new hwdep instance | |
335 | * @card: the card instance | |
336 | * @id: the id string | |
337 | * @device: the device index (zero-based) | |
338 | * @rhwdep: the pointer to store the new hwdep instance | |
339 | * | |
340 | * Creates a new hwdep instance with the given index on the card. | |
341 | * The callbacks (hwdep->ops) must be set on the returned instance | |
342 | * after this call manually by the caller. | |
343 | * | |
344 | * Returns zero if successful, or a negative error code on failure. | |
345 | */ | |
d9a98de2 TI |
346 | int snd_hwdep_new(struct snd_card *card, char *id, int device, |
347 | struct snd_hwdep **rhwdep) | |
1da177e4 | 348 | { |
d9a98de2 | 349 | struct snd_hwdep *hwdep; |
1da177e4 | 350 | int err; |
d9a98de2 | 351 | static struct snd_device_ops ops = { |
1da177e4 LT |
352 | .dev_free = snd_hwdep_dev_free, |
353 | .dev_register = snd_hwdep_dev_register, | |
c461482c | 354 | .dev_disconnect = snd_hwdep_dev_disconnect, |
1da177e4 LT |
355 | }; |
356 | ||
357 | snd_assert(rhwdep != NULL, return -EINVAL); | |
358 | *rhwdep = NULL; | |
359 | snd_assert(card != NULL, return -ENXIO); | |
ca2c0966 | 360 | hwdep = kzalloc(sizeof(*hwdep), GFP_KERNEL); |
73e77ba0 TI |
361 | if (hwdep == NULL) { |
362 | snd_printk(KERN_ERR "hwdep: cannot allocate\n"); | |
1da177e4 | 363 | return -ENOMEM; |
73e77ba0 | 364 | } |
1da177e4 LT |
365 | hwdep->card = card; |
366 | hwdep->device = device; | |
73e77ba0 | 367 | if (id) |
1da177e4 | 368 | strlcpy(hwdep->id, id, sizeof(hwdep->id)); |
1da177e4 LT |
369 | #ifdef CONFIG_SND_OSSEMUL |
370 | hwdep->oss_type = -1; | |
371 | #endif | |
372 | if ((err = snd_device_new(card, SNDRV_DEV_HWDEP, hwdep, &ops)) < 0) { | |
373 | snd_hwdep_free(hwdep); | |
374 | return err; | |
375 | } | |
376 | init_waitqueue_head(&hwdep->open_wait); | |
1a60d4c5 | 377 | mutex_init(&hwdep->open_mutex); |
1da177e4 LT |
378 | *rhwdep = hwdep; |
379 | return 0; | |
380 | } | |
381 | ||
d9a98de2 | 382 | static int snd_hwdep_free(struct snd_hwdep *hwdep) |
1da177e4 LT |
383 | { |
384 | snd_assert(hwdep != NULL, return -ENXIO); | |
385 | if (hwdep->private_free) | |
386 | hwdep->private_free(hwdep); | |
387 | kfree(hwdep); | |
388 | return 0; | |
389 | } | |
390 | ||
d9a98de2 | 391 | static int snd_hwdep_dev_free(struct snd_device *device) |
1da177e4 | 392 | { |
d9a98de2 | 393 | struct snd_hwdep *hwdep = device->device_data; |
1da177e4 LT |
394 | return snd_hwdep_free(hwdep); |
395 | } | |
396 | ||
d9a98de2 | 397 | static int snd_hwdep_dev_register(struct snd_device *device) |
1da177e4 | 398 | { |
d9a98de2 | 399 | struct snd_hwdep *hwdep = device->device_data; |
f87135f5 | 400 | int err; |
1da177e4 LT |
401 | char name[32]; |
402 | ||
1a60d4c5 | 403 | mutex_lock(®ister_mutex); |
f87135f5 | 404 | if (snd_hwdep_search(hwdep->card, hwdep->device)) { |
1a60d4c5 | 405 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
406 | return -EBUSY; |
407 | } | |
f87135f5 | 408 | list_add_tail(&hwdep->list, &snd_hwdep_devices); |
1da177e4 LT |
409 | sprintf(name, "hwC%iD%i", hwdep->card->number, hwdep->device); |
410 | if ((err = snd_register_device(SNDRV_DEVICE_TYPE_HWDEP, | |
411 | hwdep->card, hwdep->device, | |
f87135f5 | 412 | &snd_hwdep_f_ops, hwdep, name)) < 0) { |
1da177e4 LT |
413 | snd_printk(KERN_ERR "unable to register hardware dependent device %i:%i\n", |
414 | hwdep->card->number, hwdep->device); | |
f87135f5 | 415 | list_del(&hwdep->list); |
1a60d4c5 | 416 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
417 | return err; |
418 | } | |
419 | #ifdef CONFIG_SND_OSSEMUL | |
420 | hwdep->ossreg = 0; | |
421 | if (hwdep->oss_type >= 0) { | |
422 | if ((hwdep->oss_type == SNDRV_OSS_DEVICE_TYPE_DMFM) && (hwdep->device != 0)) { | |
423 | snd_printk (KERN_WARNING "only hwdep device 0 can be registered as OSS direct FM device!\n"); | |
424 | } else { | |
425 | if (snd_register_oss_device(hwdep->oss_type, | |
426 | hwdep->card, hwdep->device, | |
f87135f5 | 427 | &snd_hwdep_f_ops, hwdep, |
2af677fc | 428 | hwdep->oss_dev) < 0) { |
1da177e4 LT |
429 | snd_printk(KERN_ERR "unable to register OSS compatibility device %i:%i\n", |
430 | hwdep->card->number, hwdep->device); | |
431 | } else | |
432 | hwdep->ossreg = 1; | |
433 | } | |
434 | } | |
435 | #endif | |
1a60d4c5 | 436 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
437 | return 0; |
438 | } | |
439 | ||
c461482c | 440 | static int snd_hwdep_dev_disconnect(struct snd_device *device) |
1da177e4 | 441 | { |
d9a98de2 | 442 | struct snd_hwdep *hwdep = device->device_data; |
1da177e4 LT |
443 | |
444 | snd_assert(hwdep != NULL, return -ENXIO); | |
1a60d4c5 | 445 | mutex_lock(®ister_mutex); |
f87135f5 | 446 | if (snd_hwdep_search(hwdep->card, hwdep->device) != hwdep) { |
1a60d4c5 | 447 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
448 | return -EINVAL; |
449 | } | |
450 | #ifdef CONFIG_SND_OSSEMUL | |
451 | if (hwdep->ossreg) | |
452 | snd_unregister_oss_device(hwdep->oss_type, hwdep->card, hwdep->device); | |
453 | #endif | |
454 | snd_unregister_device(SNDRV_DEVICE_TYPE_HWDEP, hwdep->card, hwdep->device); | |
c461482c | 455 | list_del_init(&hwdep->list); |
1a60d4c5 | 456 | mutex_unlock(®ister_mutex); |
c461482c | 457 | return 0; |
1da177e4 LT |
458 | } |
459 | ||
e28563cc | 460 | #ifdef CONFIG_PROC_FS |
1da177e4 LT |
461 | /* |
462 | * Info interface | |
463 | */ | |
464 | ||
d9a98de2 TI |
465 | static void snd_hwdep_proc_read(struct snd_info_entry *entry, |
466 | struct snd_info_buffer *buffer) | |
1da177e4 | 467 | { |
d9a98de2 | 468 | struct snd_hwdep *hwdep; |
1da177e4 | 469 | |
1a60d4c5 | 470 | mutex_lock(®ister_mutex); |
9244b2c3 | 471 | list_for_each_entry(hwdep, &snd_hwdep_devices, list) |
1da177e4 | 472 | snd_iprintf(buffer, "%02i-%02i: %s\n", |
f87135f5 | 473 | hwdep->card->number, hwdep->device, hwdep->name); |
1a60d4c5 | 474 | mutex_unlock(®ister_mutex); |
1da177e4 LT |
475 | } |
476 | ||
e28563cc | 477 | static struct snd_info_entry *snd_hwdep_proc_entry; |
1da177e4 | 478 | |
e28563cc | 479 | static void __init snd_hwdep_proc_init(void) |
1da177e4 | 480 | { |
d9a98de2 | 481 | struct snd_info_entry *entry; |
1da177e4 | 482 | |
1da177e4 | 483 | if ((entry = snd_info_create_module_entry(THIS_MODULE, "hwdep", NULL)) != NULL) { |
1da177e4 LT |
484 | entry->c.text.read = snd_hwdep_proc_read; |
485 | if (snd_info_register(entry) < 0) { | |
486 | snd_info_free_entry(entry); | |
487 | entry = NULL; | |
488 | } | |
489 | } | |
490 | snd_hwdep_proc_entry = entry; | |
e28563cc TI |
491 | } |
492 | ||
493 | static void __exit snd_hwdep_proc_done(void) | |
494 | { | |
746d4a02 | 495 | snd_info_free_entry(snd_hwdep_proc_entry); |
e28563cc TI |
496 | } |
497 | #else /* !CONFIG_PROC_FS */ | |
498 | #define snd_hwdep_proc_init() | |
499 | #define snd_hwdep_proc_done() | |
500 | #endif /* CONFIG_PROC_FS */ | |
501 | ||
502 | ||
503 | /* | |
504 | * ENTRY functions | |
505 | */ | |
506 | ||
507 | static int __init alsa_hwdep_init(void) | |
508 | { | |
509 | snd_hwdep_proc_init(); | |
1da177e4 LT |
510 | snd_ctl_register_ioctl(snd_hwdep_control_ioctl); |
511 | snd_ctl_register_ioctl_compat(snd_hwdep_control_ioctl); | |
512 | return 0; | |
513 | } | |
514 | ||
515 | static void __exit alsa_hwdep_exit(void) | |
516 | { | |
517 | snd_ctl_unregister_ioctl(snd_hwdep_control_ioctl); | |
518 | snd_ctl_unregister_ioctl_compat(snd_hwdep_control_ioctl); | |
e28563cc | 519 | snd_hwdep_proc_done(); |
1da177e4 LT |
520 | } |
521 | ||
522 | module_init(alsa_hwdep_init) | |
523 | module_exit(alsa_hwdep_exit) | |
524 | ||
525 | EXPORT_SYMBOL(snd_hwdep_new); |