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