1 /*
2 * OSS emulation layer for the mixer interface
3 * Copyright (c) by Jaroslav Kysela <perex@perex.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 <linux/init.h>
23 #include <linux/slab.h>
24 #include <linux/time.h>
25 #include <linux/string.h>
26 #include <linux/module.h>
27 #include <sound/core.h>
28 #include <sound/minors.h>
29 #include <sound/control.h>
30 #include <sound/info.h>
31 #include <sound/mixer_oss.h>
32 #include <linux/soundcard.h>
33
34 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
35
36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
38 MODULE_LICENSE("GPL");
39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
40
snd_mixer_oss_open(struct inode * inode,struct file * file)41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
42 {
43 struct snd_card *card;
44 struct snd_mixer_oss_file *fmixer;
45 int err;
46
47 err = nonseekable_open(inode, file);
48 if (err < 0)
49 return err;
50
51 card = snd_lookup_oss_minor_data(iminor(inode),
52 SNDRV_OSS_DEVICE_TYPE_MIXER);
53 if (card == NULL)
54 return -ENODEV;
55 if (card->mixer_oss == NULL) {
56 snd_card_unref(card);
57 return -ENODEV;
58 }
59 err = snd_card_file_add(card, file);
60 if (err < 0) {
61 snd_card_unref(card);
62 return err;
63 }
64 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
65 if (fmixer == NULL) {
66 snd_card_file_remove(card, file);
67 snd_card_unref(card);
68 return -ENOMEM;
69 }
70 fmixer->card = card;
71 fmixer->mixer = card->mixer_oss;
72 file->private_data = fmixer;
73 if (!try_module_get(card->module)) {
74 kfree(fmixer);
75 snd_card_file_remove(card, file);
76 snd_card_unref(card);
77 return -EFAULT;
78 }
79 snd_card_unref(card);
80 return 0;
81 }
82
snd_mixer_oss_release(struct inode * inode,struct file * file)83 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
84 {
85 struct snd_mixer_oss_file *fmixer;
86
87 if (file->private_data) {
88 fmixer = file->private_data;
89 module_put(fmixer->card->module);
90 snd_card_file_remove(fmixer->card, file);
91 kfree(fmixer);
92 }
93 return 0;
94 }
95
snd_mixer_oss_info(struct snd_mixer_oss_file * fmixer,mixer_info __user * _info)96 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
97 mixer_info __user *_info)
98 {
99 struct snd_card *card = fmixer->card;
100 struct snd_mixer_oss *mixer = fmixer->mixer;
101 struct mixer_info info;
102
103 memset(&info, 0, sizeof(info));
104 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
105 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
106 info.modify_counter = card->mixer_oss_change_count;
107 if (copy_to_user(_info, &info, sizeof(info)))
108 return -EFAULT;
109 return 0;
110 }
111
snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file * fmixer,_old_mixer_info __user * _info)112 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
113 _old_mixer_info __user *_info)
114 {
115 struct snd_card *card = fmixer->card;
116 struct snd_mixer_oss *mixer = fmixer->mixer;
117 _old_mixer_info info;
118
119 memset(&info, 0, sizeof(info));
120 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
121 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
122 if (copy_to_user(_info, &info, sizeof(info)))
123 return -EFAULT;
124 return 0;
125 }
126
snd_mixer_oss_caps(struct snd_mixer_oss_file * fmixer)127 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
128 {
129 struct snd_mixer_oss *mixer = fmixer->mixer;
130 int result = 0;
131
132 if (mixer == NULL)
133 return -EIO;
134 if (mixer->get_recsrc && mixer->put_recsrc)
135 result |= SOUND_CAP_EXCL_INPUT;
136 return result;
137 }
138
snd_mixer_oss_devmask(struct snd_mixer_oss_file * fmixer)139 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
140 {
141 struct snd_mixer_oss *mixer = fmixer->mixer;
142 struct snd_mixer_oss_slot *pslot;
143 int result = 0, chn;
144
145 if (mixer == NULL)
146 return -EIO;
147 mutex_lock(&mixer->reg_mutex);
148 for (chn = 0; chn < 31; chn++) {
149 pslot = &mixer->slots[chn];
150 if (pslot->put_volume || pslot->put_recsrc)
151 result |= 1 << chn;
152 }
153 mutex_unlock(&mixer->reg_mutex);
154 return result;
155 }
156
snd_mixer_oss_stereodevs(struct snd_mixer_oss_file * fmixer)157 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
158 {
159 struct snd_mixer_oss *mixer = fmixer->mixer;
160 struct snd_mixer_oss_slot *pslot;
161 int result = 0, chn;
162
163 if (mixer == NULL)
164 return -EIO;
165 mutex_lock(&mixer->reg_mutex);
166 for (chn = 0; chn < 31; chn++) {
167 pslot = &mixer->slots[chn];
168 if (pslot->put_volume && pslot->stereo)
169 result |= 1 << chn;
170 }
171 mutex_unlock(&mixer->reg_mutex);
172 return result;
173 }
174
snd_mixer_oss_recmask(struct snd_mixer_oss_file * fmixer)175 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
176 {
177 struct snd_mixer_oss *mixer = fmixer->mixer;
178 int result = 0;
179
180 if (mixer == NULL)
181 return -EIO;
182 mutex_lock(&mixer->reg_mutex);
183 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
184 result = mixer->mask_recsrc;
185 } else {
186 struct snd_mixer_oss_slot *pslot;
187 int chn;
188 for (chn = 0; chn < 31; chn++) {
189 pslot = &mixer->slots[chn];
190 if (pslot->put_recsrc)
191 result |= 1 << chn;
192 }
193 }
194 mutex_unlock(&mixer->reg_mutex);
195 return result;
196 }
197
snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file * fmixer)198 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
199 {
200 struct snd_mixer_oss *mixer = fmixer->mixer;
201 int result = 0;
202
203 if (mixer == NULL)
204 return -EIO;
205 mutex_lock(&mixer->reg_mutex);
206 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
207 unsigned int index;
208 result = mixer->get_recsrc(fmixer, &index);
209 if (result < 0)
210 goto unlock;
211 result = 1 << index;
212 } else {
213 struct snd_mixer_oss_slot *pslot;
214 int chn;
215 for (chn = 0; chn < 31; chn++) {
216 pslot = &mixer->slots[chn];
217 if (pslot->get_recsrc) {
218 int active = 0;
219 pslot->get_recsrc(fmixer, pslot, &active);
220 if (active)
221 result |= 1 << chn;
222 }
223 }
224 }
225 mixer->oss_recsrc = result;
226 unlock:
227 mutex_unlock(&mixer->reg_mutex);
228 return result;
229 }
230
snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file * fmixer,int recsrc)231 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
232 {
233 struct snd_mixer_oss *mixer = fmixer->mixer;
234 struct snd_mixer_oss_slot *pslot;
235 int chn, active;
236 unsigned int index;
237 int result = 0;
238
239 if (mixer == NULL)
240 return -EIO;
241 mutex_lock(&mixer->reg_mutex);
242 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
243 if (recsrc & ~mixer->oss_recsrc)
244 recsrc &= ~mixer->oss_recsrc;
245 mixer->put_recsrc(fmixer, ffz(~recsrc));
246 mixer->get_recsrc(fmixer, &index);
247 result = 1 << index;
248 }
249 for (chn = 0; chn < 31; chn++) {
250 pslot = &mixer->slots[chn];
251 if (pslot->put_recsrc) {
252 active = (recsrc & (1 << chn)) ? 1 : 0;
253 pslot->put_recsrc(fmixer, pslot, active);
254 }
255 }
256 if (! result) {
257 for (chn = 0; chn < 31; chn++) {
258 pslot = &mixer->slots[chn];
259 if (pslot->get_recsrc) {
260 active = 0;
261 pslot->get_recsrc(fmixer, pslot, &active);
262 if (active)
263 result |= 1 << chn;
264 }
265 }
266 }
267 mutex_unlock(&mixer->reg_mutex);
268 return result;
269 }
270
snd_mixer_oss_get_volume(struct snd_mixer_oss_file * fmixer,int slot)271 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
272 {
273 struct snd_mixer_oss *mixer = fmixer->mixer;
274 struct snd_mixer_oss_slot *pslot;
275 int result = 0, left, right;
276
277 if (mixer == NULL || slot > 30)
278 return -EIO;
279 mutex_lock(&mixer->reg_mutex);
280 pslot = &mixer->slots[slot];
281 left = pslot->volume[0];
282 right = pslot->volume[1];
283 if (pslot->get_volume)
284 result = pslot->get_volume(fmixer, pslot, &left, &right);
285 if (!pslot->stereo)
286 right = left;
287 if (snd_BUG_ON(left < 0 || left > 100)) {
288 result = -EIO;
289 goto unlock;
290 }
291 if (snd_BUG_ON(right < 0 || right > 100)) {
292 result = -EIO;
293 goto unlock;
294 }
295 if (result >= 0) {
296 pslot->volume[0] = left;
297 pslot->volume[1] = right;
298 result = (left & 0xff) | ((right & 0xff) << 8);
299 }
300 unlock:
301 mutex_unlock(&mixer->reg_mutex);
302 return result;
303 }
304
snd_mixer_oss_set_volume(struct snd_mixer_oss_file * fmixer,int slot,int volume)305 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
306 int slot, int volume)
307 {
308 struct snd_mixer_oss *mixer = fmixer->mixer;
309 struct snd_mixer_oss_slot *pslot;
310 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
311
312 if (mixer == NULL || slot > 30)
313 return -EIO;
314 mutex_lock(&mixer->reg_mutex);
315 pslot = &mixer->slots[slot];
316 if (left > 100)
317 left = 100;
318 if (right > 100)
319 right = 100;
320 if (!pslot->stereo)
321 right = left;
322 if (pslot->put_volume)
323 result = pslot->put_volume(fmixer, pslot, left, right);
324 if (result < 0)
325 goto unlock;
326 pslot->volume[0] = left;
327 pslot->volume[1] = right;
328 result = (left & 0xff) | ((right & 0xff) << 8);
329 unlock:
330 mutex_unlock(&mixer->reg_mutex);
331 return result;
332 }
333
snd_mixer_oss_ioctl1(struct snd_mixer_oss_file * fmixer,unsigned int cmd,unsigned long arg)334 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
335 {
336 void __user *argp = (void __user *)arg;
337 int __user *p = argp;
338 int tmp;
339
340 if (snd_BUG_ON(!fmixer))
341 return -ENXIO;
342 if (((cmd >> 8) & 0xff) == 'M') {
343 switch (cmd) {
344 case SOUND_MIXER_INFO:
345 return snd_mixer_oss_info(fmixer, argp);
346 case SOUND_OLD_MIXER_INFO:
347 return snd_mixer_oss_info_obsolete(fmixer, argp);
348 case SOUND_MIXER_WRITE_RECSRC:
349 if (get_user(tmp, p))
350 return -EFAULT;
351 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
352 if (tmp < 0)
353 return tmp;
354 return put_user(tmp, p);
355 case OSS_GETVERSION:
356 return put_user(SNDRV_OSS_VERSION, p);
357 case OSS_ALSAEMULVER:
358 return put_user(1, p);
359 case SOUND_MIXER_READ_DEVMASK:
360 tmp = snd_mixer_oss_devmask(fmixer);
361 if (tmp < 0)
362 return tmp;
363 return put_user(tmp, p);
364 case SOUND_MIXER_READ_STEREODEVS:
365 tmp = snd_mixer_oss_stereodevs(fmixer);
366 if (tmp < 0)
367 return tmp;
368 return put_user(tmp, p);
369 case SOUND_MIXER_READ_RECMASK:
370 tmp = snd_mixer_oss_recmask(fmixer);
371 if (tmp < 0)
372 return tmp;
373 return put_user(tmp, p);
374 case SOUND_MIXER_READ_CAPS:
375 tmp = snd_mixer_oss_caps(fmixer);
376 if (tmp < 0)
377 return tmp;
378 return put_user(tmp, p);
379 case SOUND_MIXER_READ_RECSRC:
380 tmp = snd_mixer_oss_get_recsrc(fmixer);
381 if (tmp < 0)
382 return tmp;
383 return put_user(tmp, p);
384 }
385 }
386 if (cmd & SIOC_IN) {
387 if (get_user(tmp, p))
388 return -EFAULT;
389 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
390 if (tmp < 0)
391 return tmp;
392 return put_user(tmp, p);
393 } else if (cmd & SIOC_OUT) {
394 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
395 if (tmp < 0)
396 return tmp;
397 return put_user(tmp, p);
398 }
399 return -ENXIO;
400 }
401
snd_mixer_oss_ioctl(struct file * file,unsigned int cmd,unsigned long arg)402 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
403 {
404 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
405 }
406
snd_mixer_oss_ioctl_card(struct snd_card * card,unsigned int cmd,unsigned long arg)407 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
408 {
409 struct snd_mixer_oss_file fmixer;
410
411 if (snd_BUG_ON(!card))
412 return -ENXIO;
413 if (card->mixer_oss == NULL)
414 return -ENXIO;
415 memset(&fmixer, 0, sizeof(fmixer));
416 fmixer.card = card;
417 fmixer.mixer = card->mixer_oss;
418 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
419 }
420
421 #ifdef CONFIG_COMPAT
422 /* all compatible */
423 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
424 #else
425 #define snd_mixer_oss_ioctl_compat NULL
426 #endif
427
428 /*
429 * REGISTRATION PART
430 */
431
432 static const struct file_operations snd_mixer_oss_f_ops =
433 {
434 .owner = THIS_MODULE,
435 .open = snd_mixer_oss_open,
436 .release = snd_mixer_oss_release,
437 .llseek = no_llseek,
438 .unlocked_ioctl = snd_mixer_oss_ioctl,
439 .compat_ioctl = snd_mixer_oss_ioctl_compat,
440 };
441
442 /*
443 * utilities
444 */
445
snd_mixer_oss_conv(long val,long omin,long omax,long nmin,long nmax)446 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
447 {
448 long orange = omax - omin, nrange = nmax - nmin;
449
450 if (orange == 0)
451 return 0;
452 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
453 }
454
455 /* convert from alsa native to oss values (0-100) */
snd_mixer_oss_conv1(long val,long min,long max,int * old)456 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
457 {
458 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
459 return *old;
460 return snd_mixer_oss_conv(val, min, max, 0, 100);
461 }
462
463 /* convert from oss to alsa native values */
snd_mixer_oss_conv2(long val,long min,long max)464 static long snd_mixer_oss_conv2(long val, long min, long max)
465 {
466 return snd_mixer_oss_conv(val, 0, 100, min, max);
467 }
468
469 #if 0
470 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
471 {
472 struct snd_mixer_oss *mixer = card->mixer_oss;
473 if (mixer)
474 mixer->mask_recsrc |= 1 << slot;
475 }
476
477 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
478 {
479 struct snd_mixer_oss *mixer = card->mixer_oss;
480 if (mixer && (mixer->mask_recsrc & (1 << slot)))
481 return 1;
482 return 0;
483 }
484 #endif
485
486 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
487
488 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
489 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
490 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
491 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
492 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
493 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
494 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
495 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
496 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
497 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
498 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
499
500 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
501
502 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
503 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
504 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
505 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
506 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
507 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
508 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
509 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
510 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
511 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
512 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
513
514 struct slot {
515 unsigned int signature;
516 unsigned int present;
517 unsigned int channels;
518 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
519 unsigned int capture_item;
520 struct snd_mixer_oss_assign_table *assigned;
521 unsigned int allocated: 1;
522 };
523
524 #define ID_UNKNOWN ((unsigned int)-1)
525
snd_mixer_oss_test_id(struct snd_mixer_oss * mixer,const char * name,int index)526 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
527 {
528 struct snd_card *card = mixer->card;
529 struct snd_ctl_elem_id id;
530
531 memset(&id, 0, sizeof(id));
532 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
533 strlcpy(id.name, name, sizeof(id.name));
534 id.index = index;
535 return snd_ctl_find_id(card, &id);
536 }
537
snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,unsigned int numid,int * left,int * right)538 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
539 struct snd_mixer_oss_slot *pslot,
540 unsigned int numid,
541 int *left, int *right)
542 {
543 struct snd_ctl_elem_info *uinfo;
544 struct snd_ctl_elem_value *uctl;
545 struct snd_kcontrol *kctl;
546 struct snd_card *card = fmixer->card;
547
548 if (numid == ID_UNKNOWN)
549 return;
550 down_read(&card->controls_rwsem);
551 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
552 up_read(&card->controls_rwsem);
553 return;
554 }
555 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
556 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
557 if (uinfo == NULL || uctl == NULL)
558 goto __unalloc;
559 if (kctl->info(kctl, uinfo))
560 goto __unalloc;
561 if (kctl->get(kctl, uctl))
562 goto __unalloc;
563 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
564 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
565 goto __unalloc;
566 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
567 if (uinfo->count > 1)
568 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
569 __unalloc:
570 up_read(&card->controls_rwsem);
571 kfree(uctl);
572 kfree(uinfo);
573 }
574
snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,unsigned int numid,int * left,int * right,int route)575 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
576 struct snd_mixer_oss_slot *pslot,
577 unsigned int numid,
578 int *left, int *right,
579 int route)
580 {
581 struct snd_ctl_elem_info *uinfo;
582 struct snd_ctl_elem_value *uctl;
583 struct snd_kcontrol *kctl;
584 struct snd_card *card = fmixer->card;
585
586 if (numid == ID_UNKNOWN)
587 return;
588 down_read(&card->controls_rwsem);
589 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
590 up_read(&card->controls_rwsem);
591 return;
592 }
593 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
594 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
595 if (uinfo == NULL || uctl == NULL)
596 goto __unalloc;
597 if (kctl->info(kctl, uinfo))
598 goto __unalloc;
599 if (kctl->get(kctl, uctl))
600 goto __unalloc;
601 if (!uctl->value.integer.value[0]) {
602 *left = 0;
603 if (uinfo->count == 1)
604 *right = 0;
605 }
606 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
607 *right = 0;
608 __unalloc:
609 up_read(&card->controls_rwsem);
610 kfree(uctl);
611 kfree(uinfo);
612 }
613
snd_mixer_oss_get_volume1(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int * left,int * right)614 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
615 struct snd_mixer_oss_slot *pslot,
616 int *left, int *right)
617 {
618 struct slot *slot = pslot->private_data;
619
620 *left = *right = 100;
621 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
622 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
623 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
624 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
625 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
626 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
627 }
628 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
629 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
630 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
631 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
632 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
633 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
634 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
635 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
636 }
637 return 0;
638 }
639
snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,unsigned int numid,int left,int right)640 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
641 struct snd_mixer_oss_slot *pslot,
642 unsigned int numid,
643 int left, int right)
644 {
645 struct snd_ctl_elem_info *uinfo;
646 struct snd_ctl_elem_value *uctl;
647 struct snd_kcontrol *kctl;
648 struct snd_card *card = fmixer->card;
649 int res;
650
651 if (numid == ID_UNKNOWN)
652 return;
653 down_read(&card->controls_rwsem);
654 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
655 up_read(&card->controls_rwsem);
656 return;
657 }
658 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
659 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
660 if (uinfo == NULL || uctl == NULL)
661 goto __unalloc;
662 if (kctl->info(kctl, uinfo))
663 goto __unalloc;
664 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
665 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
666 goto __unalloc;
667 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
668 if (uinfo->count > 1)
669 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
670 if ((res = kctl->put(kctl, uctl)) < 0)
671 goto __unalloc;
672 if (res > 0)
673 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
674 __unalloc:
675 up_read(&card->controls_rwsem);
676 kfree(uctl);
677 kfree(uinfo);
678 }
679
snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,unsigned int numid,int left,int right,int route)680 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
681 struct snd_mixer_oss_slot *pslot,
682 unsigned int numid,
683 int left, int right,
684 int route)
685 {
686 struct snd_ctl_elem_info *uinfo;
687 struct snd_ctl_elem_value *uctl;
688 struct snd_kcontrol *kctl;
689 struct snd_card *card = fmixer->card;
690 int res;
691
692 if (numid == ID_UNKNOWN)
693 return;
694 down_read(&card->controls_rwsem);
695 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
696 up_read(&card->controls_rwsem);
697 return;
698 }
699 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
700 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
701 if (uinfo == NULL || uctl == NULL)
702 goto __unalloc;
703 if (kctl->info(kctl, uinfo))
704 goto __unalloc;
705 if (uinfo->count > 1) {
706 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
707 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
708 if (route) {
709 uctl->value.integer.value[1] =
710 uctl->value.integer.value[2] = 0;
711 }
712 } else {
713 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
714 }
715 if ((res = kctl->put(kctl, uctl)) < 0)
716 goto __unalloc;
717 if (res > 0)
718 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
719 __unalloc:
720 up_read(&card->controls_rwsem);
721 kfree(uctl);
722 kfree(uinfo);
723 }
724
snd_mixer_oss_put_volume1(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int left,int right)725 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
726 struct snd_mixer_oss_slot *pslot,
727 int left, int right)
728 {
729 struct slot *slot = pslot->private_data;
730
731 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
732 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
733 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
734 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
735 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
736 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
737 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
738 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
739 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
740 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
741 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
742 }
743 if (left || right) {
744 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
746 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
747 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
748 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
749 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
750 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
751 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
752 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
753 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
754 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
755 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
756 } else {
757 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
758 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
759 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
760 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
761 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
762 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
763 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
764 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
765 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
766 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
767 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
768 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
769 }
770 }
771 return 0;
772 }
773
snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int * active)774 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
775 struct snd_mixer_oss_slot *pslot,
776 int *active)
777 {
778 struct slot *slot = pslot->private_data;
779 int left, right;
780
781 left = right = 1;
782 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
783 *active = (left || right) ? 1 : 0;
784 return 0;
785 }
786
snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int * active)787 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
788 struct snd_mixer_oss_slot *pslot,
789 int *active)
790 {
791 struct slot *slot = pslot->private_data;
792 int left, right;
793
794 left = right = 1;
795 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
796 *active = (left || right) ? 1 : 0;
797 return 0;
798 }
799
snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int active)800 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
801 struct snd_mixer_oss_slot *pslot,
802 int active)
803 {
804 struct slot *slot = pslot->private_data;
805
806 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
807 return 0;
808 }
809
snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file * fmixer,struct snd_mixer_oss_slot * pslot,int active)810 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
811 struct snd_mixer_oss_slot *pslot,
812 int active)
813 {
814 struct slot *slot = pslot->private_data;
815
816 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
817 return 0;
818 }
819
snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file * fmixer,unsigned int * active_index)820 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
821 {
822 struct snd_card *card = fmixer->card;
823 struct snd_mixer_oss *mixer = fmixer->mixer;
824 struct snd_kcontrol *kctl;
825 struct snd_mixer_oss_slot *pslot;
826 struct slot *slot;
827 struct snd_ctl_elem_info *uinfo;
828 struct snd_ctl_elem_value *uctl;
829 int err, idx;
830
831 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
832 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
833 if (uinfo == NULL || uctl == NULL) {
834 err = -ENOMEM;
835 goto __free_only;
836 }
837 down_read(&card->controls_rwsem);
838 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
839 if (! kctl) {
840 err = -ENOENT;
841 goto __unlock;
842 }
843 if ((err = kctl->info(kctl, uinfo)) < 0)
844 goto __unlock;
845 if ((err = kctl->get(kctl, uctl)) < 0)
846 goto __unlock;
847 for (idx = 0; idx < 32; idx++) {
848 if (!(mixer->mask_recsrc & (1 << idx)))
849 continue;
850 pslot = &mixer->slots[idx];
851 slot = pslot->private_data;
852 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
853 continue;
854 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
855 continue;
856 if (slot->capture_item == uctl->value.enumerated.item[0]) {
857 *active_index = idx;
858 break;
859 }
860 }
861 err = 0;
862 __unlock:
863 up_read(&card->controls_rwsem);
864 __free_only:
865 kfree(uctl);
866 kfree(uinfo);
867 return err;
868 }
869
snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file * fmixer,unsigned int active_index)870 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
871 {
872 struct snd_card *card = fmixer->card;
873 struct snd_mixer_oss *mixer = fmixer->mixer;
874 struct snd_kcontrol *kctl;
875 struct snd_mixer_oss_slot *pslot;
876 struct slot *slot = NULL;
877 struct snd_ctl_elem_info *uinfo;
878 struct snd_ctl_elem_value *uctl;
879 int err;
880 unsigned int idx;
881
882 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
883 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
884 if (uinfo == NULL || uctl == NULL) {
885 err = -ENOMEM;
886 goto __free_only;
887 }
888 down_read(&card->controls_rwsem);
889 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
890 if (! kctl) {
891 err = -ENOENT;
892 goto __unlock;
893 }
894 if ((err = kctl->info(kctl, uinfo)) < 0)
895 goto __unlock;
896 for (idx = 0; idx < 32; idx++) {
897 if (!(mixer->mask_recsrc & (1 << idx)))
898 continue;
899 pslot = &mixer->slots[idx];
900 slot = pslot->private_data;
901 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
902 continue;
903 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
904 continue;
905 if (idx == active_index)
906 break;
907 slot = NULL;
908 }
909 if (! slot)
910 goto __unlock;
911 for (idx = 0; idx < uinfo->count; idx++)
912 uctl->value.enumerated.item[idx] = slot->capture_item;
913 err = kctl->put(kctl, uctl);
914 if (err > 0)
915 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
916 err = 0;
917 __unlock:
918 up_read(&card->controls_rwsem);
919 __free_only:
920 kfree(uctl);
921 kfree(uinfo);
922 return err;
923 }
924
925 struct snd_mixer_oss_assign_table {
926 int oss_id;
927 const char *name;
928 int index;
929 };
930
snd_mixer_oss_build_test(struct snd_mixer_oss * mixer,struct slot * slot,const char * name,int index,int item)931 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
932 {
933 struct snd_ctl_elem_info *info;
934 struct snd_kcontrol *kcontrol;
935 struct snd_card *card = mixer->card;
936 int err;
937
938 down_read(&card->controls_rwsem);
939 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
940 if (kcontrol == NULL) {
941 up_read(&card->controls_rwsem);
942 return 0;
943 }
944 info = kmalloc(sizeof(*info), GFP_KERNEL);
945 if (! info) {
946 up_read(&card->controls_rwsem);
947 return -ENOMEM;
948 }
949 if ((err = kcontrol->info(kcontrol, info)) < 0) {
950 up_read(&card->controls_rwsem);
951 kfree(info);
952 return err;
953 }
954 slot->numid[item] = kcontrol->id.numid;
955 up_read(&card->controls_rwsem);
956 if (info->count > slot->channels)
957 slot->channels = info->count;
958 slot->present |= 1 << item;
959 kfree(info);
960 return 0;
961 }
962
snd_mixer_oss_slot_free(struct snd_mixer_oss_slot * chn)963 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
964 {
965 struct slot *p = chn->private_data;
966 if (p) {
967 if (p->allocated && p->assigned) {
968 kfree(p->assigned->name);
969 kfree(p->assigned);
970 }
971 kfree(p);
972 }
973 }
974
mixer_slot_clear(struct snd_mixer_oss_slot * rslot)975 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
976 {
977 int idx = rslot->number; /* remember this */
978 if (rslot->private_free)
979 rslot->private_free(rslot);
980 memset(rslot, 0, sizeof(*rslot));
981 rslot->number = idx;
982 }
983
984 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
985 snd_mixer_oss_build_input! */
snd_mixer_oss_build_test_all(struct snd_mixer_oss * mixer,struct snd_mixer_oss_assign_table * ptr,struct slot * slot)986 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
987 struct snd_mixer_oss_assign_table *ptr,
988 struct slot *slot)
989 {
990 char str[64];
991 int err;
992
993 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
994 SNDRV_MIXER_OSS_ITEM_GLOBAL);
995 if (err)
996 return err;
997 sprintf(str, "%s Switch", ptr->name);
998 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
999 SNDRV_MIXER_OSS_ITEM_GSWITCH);
1000 if (err)
1001 return err;
1002 sprintf(str, "%s Route", ptr->name);
1003 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1004 SNDRV_MIXER_OSS_ITEM_GROUTE);
1005 if (err)
1006 return err;
1007 sprintf(str, "%s Volume", ptr->name);
1008 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1009 SNDRV_MIXER_OSS_ITEM_GVOLUME);
1010 if (err)
1011 return err;
1012 sprintf(str, "%s Playback Switch", ptr->name);
1013 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1014 SNDRV_MIXER_OSS_ITEM_PSWITCH);
1015 if (err)
1016 return err;
1017 sprintf(str, "%s Playback Route", ptr->name);
1018 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1019 SNDRV_MIXER_OSS_ITEM_PROUTE);
1020 if (err)
1021 return err;
1022 sprintf(str, "%s Playback Volume", ptr->name);
1023 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1024 SNDRV_MIXER_OSS_ITEM_PVOLUME);
1025 if (err)
1026 return err;
1027 sprintf(str, "%s Capture Switch", ptr->name);
1028 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1029 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1030 if (err)
1031 return err;
1032 sprintf(str, "%s Capture Route", ptr->name);
1033 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1034 SNDRV_MIXER_OSS_ITEM_CROUTE);
1035 if (err)
1036 return err;
1037 sprintf(str, "%s Capture Volume", ptr->name);
1038 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1039 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1040 if (err)
1041 return err;
1042
1043 return 0;
1044 }
1045
1046 /*
1047 * build an OSS mixer element.
1048 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1049 * when replace_old = 1, the old entry is replaced with the new one.
1050 */
snd_mixer_oss_build_input(struct snd_mixer_oss * mixer,struct snd_mixer_oss_assign_table * ptr,int ptr_allocated,int replace_old)1051 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1052 {
1053 struct slot slot;
1054 struct slot *pslot;
1055 struct snd_kcontrol *kctl;
1056 struct snd_mixer_oss_slot *rslot;
1057 char str[64];
1058
1059 /* check if already assigned */
1060 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1061 return 0;
1062
1063 memset(&slot, 0, sizeof(slot));
1064 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1065 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1066 return 0;
1067 down_read(&mixer->card->controls_rwsem);
1068 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1069 struct snd_ctl_elem_info *uinfo;
1070
1071 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1072 if (! uinfo) {
1073 up_read(&mixer->card->controls_rwsem);
1074 return -ENOMEM;
1075 }
1076
1077 if (kctl->info(kctl, uinfo)) {
1078 up_read(&mixer->card->controls_rwsem);
1079 kfree(uinfo);
1080 return 0;
1081 }
1082 strcpy(str, ptr->name);
1083 if (!strcmp(str, "Master"))
1084 strcpy(str, "Mix");
1085 if (!strcmp(str, "Master Mono"))
1086 strcpy(str, "Mix Mono");
1087 slot.capture_item = 0;
1088 if (!strcmp(uinfo->value.enumerated.name, str)) {
1089 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1090 } else {
1091 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1092 uinfo->value.enumerated.item = slot.capture_item;
1093 if (kctl->info(kctl, uinfo)) {
1094 up_read(&mixer->card->controls_rwsem);
1095 kfree(uinfo);
1096 return 0;
1097 }
1098 if (!strcmp(uinfo->value.enumerated.name, str)) {
1099 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1100 break;
1101 }
1102 }
1103 }
1104 kfree(uinfo);
1105 }
1106 up_read(&mixer->card->controls_rwsem);
1107 if (slot.present != 0) {
1108 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1109 if (! pslot)
1110 return -ENOMEM;
1111 *pslot = slot;
1112 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1113 pslot->assigned = ptr;
1114 pslot->allocated = ptr_allocated;
1115 rslot = &mixer->slots[ptr->oss_id];
1116 mixer_slot_clear(rslot);
1117 rslot->stereo = slot.channels > 1 ? 1 : 0;
1118 rslot->get_volume = snd_mixer_oss_get_volume1;
1119 rslot->put_volume = snd_mixer_oss_put_volume1;
1120 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1121 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1122 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1123 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1124 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1125 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1126 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1127 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1128 mixer->mask_recsrc |= 1 << ptr->oss_id;
1129 }
1130 rslot->private_data = pslot;
1131 rslot->private_free = snd_mixer_oss_slot_free;
1132 return 1;
1133 }
1134 return 0;
1135 }
1136
1137 #ifdef CONFIG_SND_PROC_FS
1138 /*
1139 */
1140 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1141 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1142 MIXER_VOL(VOLUME),
1143 MIXER_VOL(BASS),
1144 MIXER_VOL(TREBLE),
1145 MIXER_VOL(SYNTH),
1146 MIXER_VOL(PCM),
1147 MIXER_VOL(SPEAKER),
1148 MIXER_VOL(LINE),
1149 MIXER_VOL(MIC),
1150 MIXER_VOL(CD),
1151 MIXER_VOL(IMIX),
1152 MIXER_VOL(ALTPCM),
1153 MIXER_VOL(RECLEV),
1154 MIXER_VOL(IGAIN),
1155 MIXER_VOL(OGAIN),
1156 MIXER_VOL(LINE1),
1157 MIXER_VOL(LINE2),
1158 MIXER_VOL(LINE3),
1159 MIXER_VOL(DIGITAL1),
1160 MIXER_VOL(DIGITAL2),
1161 MIXER_VOL(DIGITAL3),
1162 MIXER_VOL(PHONEIN),
1163 MIXER_VOL(PHONEOUT),
1164 MIXER_VOL(VIDEO),
1165 MIXER_VOL(RADIO),
1166 MIXER_VOL(MONITOR),
1167 };
1168
1169 /*
1170 * /proc interface
1171 */
1172
snd_mixer_oss_proc_read(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1173 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1174 struct snd_info_buffer *buffer)
1175 {
1176 struct snd_mixer_oss *mixer = entry->private_data;
1177 int i;
1178
1179 mutex_lock(&mixer->reg_mutex);
1180 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1181 struct slot *p;
1182
1183 if (! oss_mixer_names[i])
1184 continue;
1185 p = (struct slot *)mixer->slots[i].private_data;
1186 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1187 if (p && p->assigned)
1188 snd_iprintf(buffer, "\"%s\" %d\n",
1189 p->assigned->name,
1190 p->assigned->index);
1191 else
1192 snd_iprintf(buffer, "\"\" 0\n");
1193 }
1194 mutex_unlock(&mixer->reg_mutex);
1195 }
1196
snd_mixer_oss_proc_write(struct snd_info_entry * entry,struct snd_info_buffer * buffer)1197 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1198 struct snd_info_buffer *buffer)
1199 {
1200 struct snd_mixer_oss *mixer = entry->private_data;
1201 char line[128], str[32], idxstr[16];
1202 const char *cptr;
1203 unsigned int idx;
1204 int ch;
1205 struct snd_mixer_oss_assign_table *tbl;
1206 struct slot *slot;
1207
1208 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1209 cptr = snd_info_get_str(str, line, sizeof(str));
1210 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1211 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1212 break;
1213 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1214 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1215 str);
1216 continue;
1217 }
1218 cptr = snd_info_get_str(str, cptr, sizeof(str));
1219 if (! *str) {
1220 /* remove the entry */
1221 mutex_lock(&mixer->reg_mutex);
1222 mixer_slot_clear(&mixer->slots[ch]);
1223 mutex_unlock(&mixer->reg_mutex);
1224 continue;
1225 }
1226 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1227 idx = simple_strtoul(idxstr, NULL, 10);
1228 if (idx >= 0x4000) { /* too big */
1229 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1230 continue;
1231 }
1232 mutex_lock(&mixer->reg_mutex);
1233 slot = (struct slot *)mixer->slots[ch].private_data;
1234 if (slot && slot->assigned &&
1235 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1236 /* not changed */
1237 goto __unlock;
1238 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1239 if (!tbl)
1240 goto __unlock;
1241 tbl->oss_id = ch;
1242 tbl->name = kstrdup(str, GFP_KERNEL);
1243 if (! tbl->name) {
1244 kfree(tbl);
1245 goto __unlock;
1246 }
1247 tbl->index = idx;
1248 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1249 kfree(tbl->name);
1250 kfree(tbl);
1251 }
1252 __unlock:
1253 mutex_unlock(&mixer->reg_mutex);
1254 }
1255 }
1256
snd_mixer_oss_proc_init(struct snd_mixer_oss * mixer)1257 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1258 {
1259 struct snd_info_entry *entry;
1260
1261 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1262 mixer->card->proc_root);
1263 if (! entry)
1264 return;
1265 entry->content = SNDRV_INFO_CONTENT_TEXT;
1266 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1267 entry->c.text.read = snd_mixer_oss_proc_read;
1268 entry->c.text.write = snd_mixer_oss_proc_write;
1269 entry->private_data = mixer;
1270 if (snd_info_register(entry) < 0) {
1271 snd_info_free_entry(entry);
1272 entry = NULL;
1273 }
1274 mixer->proc_entry = entry;
1275 }
1276
snd_mixer_oss_proc_done(struct snd_mixer_oss * mixer)1277 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1278 {
1279 snd_info_free_entry(mixer->proc_entry);
1280 mixer->proc_entry = NULL;
1281 }
1282 #else /* !CONFIG_SND_PROC_FS */
1283 #define snd_mixer_oss_proc_init(mix)
1284 #define snd_mixer_oss_proc_done(mix)
1285 #endif /* CONFIG_SND_PROC_FS */
1286
snd_mixer_oss_build(struct snd_mixer_oss * mixer)1287 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1288 {
1289 static struct snd_mixer_oss_assign_table table[] = {
1290 { SOUND_MIXER_VOLUME, "Master", 0 },
1291 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1292 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1293 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1294 { SOUND_MIXER_SYNTH, "Synth", 0 },
1295 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1296 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1297 { SOUND_MIXER_PCM, "PCM", 0 },
1298 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1299 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1300 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1301 { SOUND_MIXER_LINE, "Line", 0 },
1302 { SOUND_MIXER_MIC, "Mic", 0 },
1303 { SOUND_MIXER_CD, "CD", 0 },
1304 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1305 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1306 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1307 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1308 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1309 { SOUND_MIXER_IGAIN, "Capture", 0 },
1310 { SOUND_MIXER_OGAIN, "Playback", 0 },
1311 { SOUND_MIXER_LINE1, "Aux", 0 },
1312 { SOUND_MIXER_LINE2, "Aux", 1 },
1313 { SOUND_MIXER_LINE3, "Aux", 2 },
1314 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1315 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1316 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1317 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1318 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1319 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1320 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1321 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1322 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1323 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1324 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1325 { SOUND_MIXER_VIDEO, "Video", 0 },
1326 { SOUND_MIXER_RADIO, "Radio", 0 },
1327 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1328 };
1329 unsigned int idx;
1330
1331 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1332 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1333 if (mixer->mask_recsrc) {
1334 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1335 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1336 }
1337 }
1338
1339 /*
1340 *
1341 */
1342
snd_mixer_oss_free1(void * private)1343 static int snd_mixer_oss_free1(void *private)
1344 {
1345 struct snd_mixer_oss *mixer = private;
1346 struct snd_card *card;
1347 int idx;
1348
1349 if (!mixer)
1350 return 0;
1351 card = mixer->card;
1352 if (snd_BUG_ON(mixer != card->mixer_oss))
1353 return -ENXIO;
1354 card->mixer_oss = NULL;
1355 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1356 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1357 if (chn->private_free)
1358 chn->private_free(chn);
1359 }
1360 kfree(mixer);
1361 return 0;
1362 }
1363
snd_mixer_oss_notify_handler(struct snd_card * card,int cmd)1364 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1365 {
1366 struct snd_mixer_oss *mixer;
1367
1368 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1369 int idx, err;
1370
1371 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1372 if (mixer == NULL)
1373 return -ENOMEM;
1374 mutex_init(&mixer->reg_mutex);
1375 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1376 card, 0,
1377 &snd_mixer_oss_f_ops, card)) < 0) {
1378 dev_err(card->dev,
1379 "unable to register OSS mixer device %i:%i\n",
1380 card->number, 0);
1381 kfree(mixer);
1382 return err;
1383 }
1384 mixer->oss_dev_alloc = 1;
1385 mixer->card = card;
1386 if (*card->mixername)
1387 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1388 else
1389 snprintf(mixer->name, sizeof(mixer->name),
1390 "mixer%i", card->number);
1391 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1392 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1393 card->number,
1394 mixer->name);
1395 #endif
1396 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1397 mixer->slots[idx].number = idx;
1398 card->mixer_oss = mixer;
1399 snd_mixer_oss_build(mixer);
1400 snd_mixer_oss_proc_init(mixer);
1401 } else {
1402 mixer = card->mixer_oss;
1403 if (mixer == NULL)
1404 return 0;
1405 if (mixer->oss_dev_alloc) {
1406 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1407 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1408 #endif
1409 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1410 mixer->oss_dev_alloc = 0;
1411 }
1412 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1413 return 0;
1414 snd_mixer_oss_proc_done(mixer);
1415 return snd_mixer_oss_free1(mixer);
1416 }
1417 return 0;
1418 }
1419
alsa_mixer_oss_init(void)1420 static int __init alsa_mixer_oss_init(void)
1421 {
1422 int idx;
1423
1424 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1425 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1426 if (snd_cards[idx])
1427 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1428 }
1429 return 0;
1430 }
1431
alsa_mixer_oss_exit(void)1432 static void __exit alsa_mixer_oss_exit(void)
1433 {
1434 int idx;
1435
1436 snd_mixer_oss_notify_callback = NULL;
1437 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1438 if (snd_cards[idx])
1439 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1440 }
1441 }
1442
1443 module_init(alsa_mixer_oss_init)
1444 module_exit(alsa_mixer_oss_exit)
1445
1446 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
1447