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ALSA: Kill snd_assert() in sound/core/*
[deliverable/linux.git] / sound / core / oss / mixer_oss.c
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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
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) */
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 */
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
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
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
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
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
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
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
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_GVOLUME) {
696 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
697 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
698 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
699 }
700 if (left || right) {
701 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
702 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
703 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
704 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
705 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
706 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
707 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
708 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
709 } else {
710 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
712 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
713 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
714 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
715 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
716 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
717 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
718 }
719 }
720 return 0;
721 }
722
723 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
724 struct snd_mixer_oss_slot *pslot,
725 int *active)
726 {
727 struct slot *slot = (struct slot *)pslot->private_data;
728 int left, right;
729
730 left = right = 1;
731 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
732 *active = (left || right) ? 1 : 0;
733 return 0;
734 }
735
736 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
737 struct snd_mixer_oss_slot *pslot,
738 int *active)
739 {
740 struct slot *slot = (struct slot *)pslot->private_data;
741 int left, right;
742
743 left = right = 1;
744 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
745 *active = (left || right) ? 1 : 0;
746 return 0;
747 }
748
749 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
750 struct snd_mixer_oss_slot *pslot,
751 int active)
752 {
753 struct slot *slot = (struct slot *)pslot->private_data;
754
755 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
756 return 0;
757 }
758
759 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
760 struct snd_mixer_oss_slot *pslot,
761 int active)
762 {
763 struct slot *slot = (struct slot *)pslot->private_data;
764
765 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
766 return 0;
767 }
768
769 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
770 {
771 struct snd_card *card = fmixer->card;
772 struct snd_mixer_oss *mixer = fmixer->mixer;
773 struct snd_kcontrol *kctl;
774 struct snd_mixer_oss_slot *pslot;
775 struct slot *slot;
776 struct snd_ctl_elem_info *uinfo;
777 struct snd_ctl_elem_value *uctl;
778 int err, idx;
779
780 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
781 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
782 if (uinfo == NULL || uctl == NULL) {
783 err = -ENOMEM;
784 goto __unlock;
785 }
786 down_read(&card->controls_rwsem);
787 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
788 if (! kctl) {
789 err = -ENOENT;
790 goto __unlock;
791 }
792 if ((err = kctl->info(kctl, uinfo)) < 0)
793 goto __unlock;
794 if ((err = kctl->get(kctl, uctl)) < 0)
795 goto __unlock;
796 for (idx = 0; idx < 32; idx++) {
797 if (!(mixer->mask_recsrc & (1 << idx)))
798 continue;
799 pslot = &mixer->slots[idx];
800 slot = (struct slot *)pslot->private_data;
801 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
802 continue;
803 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
804 continue;
805 if (slot->capture_item == uctl->value.enumerated.item[0]) {
806 *active_index = idx;
807 break;
808 }
809 }
810 err = 0;
811 __unlock:
812 up_read(&card->controls_rwsem);
813 kfree(uctl);
814 kfree(uinfo);
815 return err;
816 }
817
818 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
819 {
820 struct snd_card *card = fmixer->card;
821 struct snd_mixer_oss *mixer = fmixer->mixer;
822 struct snd_kcontrol *kctl;
823 struct snd_mixer_oss_slot *pslot;
824 struct slot *slot = NULL;
825 struct snd_ctl_elem_info *uinfo;
826 struct snd_ctl_elem_value *uctl;
827 int err;
828 unsigned int idx;
829
830 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
831 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
832 if (uinfo == NULL || uctl == NULL) {
833 err = -ENOMEM;
834 goto __unlock;
835 }
836 down_read(&card->controls_rwsem);
837 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
838 if (! kctl) {
839 err = -ENOENT;
840 goto __unlock;
841 }
842 if ((err = kctl->info(kctl, uinfo)) < 0)
843 goto __unlock;
844 for (idx = 0; idx < 32; idx++) {
845 if (!(mixer->mask_recsrc & (1 << idx)))
846 continue;
847 pslot = &mixer->slots[idx];
848 slot = (struct slot *)pslot->private_data;
849 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
850 continue;
851 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
852 continue;
853 if (idx == active_index)
854 break;
855 slot = NULL;
856 }
857 if (! slot)
858 goto __unlock;
859 for (idx = 0; idx < uinfo->count; idx++)
860 uctl->value.enumerated.item[idx] = slot->capture_item;
861 err = kctl->put(kctl, uctl);
862 if (err > 0)
863 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
864 err = 0;
865 __unlock:
866 up_read(&card->controls_rwsem);
867 kfree(uctl);
868 kfree(uinfo);
869 return err;
870 }
871
872 struct snd_mixer_oss_assign_table {
873 int oss_id;
874 const char *name;
875 int index;
876 };
877
878 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
879 {
880 struct snd_ctl_elem_info *info;
881 struct snd_kcontrol *kcontrol;
882 struct snd_card *card = mixer->card;
883 int err;
884
885 down_read(&card->controls_rwsem);
886 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
887 if (kcontrol == NULL) {
888 up_read(&card->controls_rwsem);
889 return 0;
890 }
891 info = kmalloc(sizeof(*info), GFP_KERNEL);
892 if (! info) {
893 up_read(&card->controls_rwsem);
894 return -ENOMEM;
895 }
896 if ((err = kcontrol->info(kcontrol, info)) < 0) {
897 up_read(&card->controls_rwsem);
898 kfree(info);
899 return err;
900 }
901 slot->numid[item] = kcontrol->id.numid;
902 up_read(&card->controls_rwsem);
903 if (info->count > slot->channels)
904 slot->channels = info->count;
905 slot->present |= 1 << item;
906 kfree(info);
907 return 0;
908 }
909
910 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
911 {
912 struct slot *p = (struct slot *)chn->private_data;
913 if (p) {
914 if (p->allocated && p->assigned) {
915 kfree(p->assigned->name);
916 kfree(p->assigned);
917 }
918 kfree(p);
919 }
920 }
921
922 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
923 {
924 int idx = rslot->number; /* remember this */
925 if (rslot->private_free)
926 rslot->private_free(rslot);
927 memset(rslot, 0, sizeof(*rslot));
928 rslot->number = idx;
929 }
930
931 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
932 snd_mixer_oss_build_input! */
933 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
934 struct snd_mixer_oss_assign_table *ptr,
935 struct slot *slot)
936 {
937 char str[64];
938 int err;
939
940 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
941 SNDRV_MIXER_OSS_ITEM_GLOBAL);
942 if (err)
943 return err;
944 sprintf(str, "%s Switch", ptr->name);
945 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
946 SNDRV_MIXER_OSS_ITEM_GSWITCH);
947 if (err)
948 return err;
949 sprintf(str, "%s Route", ptr->name);
950 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
951 SNDRV_MIXER_OSS_ITEM_GROUTE);
952 if (err)
953 return err;
954 sprintf(str, "%s Volume", ptr->name);
955 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
956 SNDRV_MIXER_OSS_ITEM_GVOLUME);
957 if (err)
958 return err;
959 sprintf(str, "%s Playback Switch", ptr->name);
960 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
961 SNDRV_MIXER_OSS_ITEM_PSWITCH);
962 if (err)
963 return err;
964 sprintf(str, "%s Playback Route", ptr->name);
965 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
966 SNDRV_MIXER_OSS_ITEM_PROUTE);
967 if (err)
968 return err;
969 sprintf(str, "%s Playback Volume", ptr->name);
970 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
971 SNDRV_MIXER_OSS_ITEM_PVOLUME);
972 if (err)
973 return err;
974 sprintf(str, "%s Capture Switch", ptr->name);
975 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
976 SNDRV_MIXER_OSS_ITEM_CSWITCH);
977 if (err)
978 return err;
979 sprintf(str, "%s Capture Route", ptr->name);
980 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
981 SNDRV_MIXER_OSS_ITEM_CROUTE);
982 if (err)
983 return err;
984 sprintf(str, "%s Capture Volume", ptr->name);
985 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
986 SNDRV_MIXER_OSS_ITEM_CVOLUME);
987 if (err)
988 return err;
989
990 return 0;
991 }
992
993 /*
994 * build an OSS mixer element.
995 * ptr_allocated means the entry is dynamically allocated (change via proc file).
996 * when replace_old = 1, the old entry is replaced with the new one.
997 */
998 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)
999 {
1000 struct slot slot;
1001 struct slot *pslot;
1002 struct snd_kcontrol *kctl;
1003 struct snd_mixer_oss_slot *rslot;
1004 char str[64];
1005
1006 /* check if already assigned */
1007 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1008 return 0;
1009
1010 memset(&slot, 0, sizeof(slot));
1011 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1012 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1013 return 0;
1014 down_read(&mixer->card->controls_rwsem);
1015 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1016 struct snd_ctl_elem_info *uinfo;
1017
1018 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1019 if (! uinfo) {
1020 up_read(&mixer->card->controls_rwsem);
1021 return -ENOMEM;
1022 }
1023
1024 if (kctl->info(kctl, uinfo)) {
1025 up_read(&mixer->card->controls_rwsem);
1026 return 0;
1027 }
1028 strcpy(str, ptr->name);
1029 if (!strcmp(str, "Master"))
1030 strcpy(str, "Mix");
1031 if (!strcmp(str, "Master Mono"))
1032 strcpy(str, "Mix Mono");
1033 slot.capture_item = 0;
1034 if (!strcmp(uinfo->value.enumerated.name, str)) {
1035 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1036 } else {
1037 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1038 uinfo->value.enumerated.item = slot.capture_item;
1039 if (kctl->info(kctl, uinfo)) {
1040 up_read(&mixer->card->controls_rwsem);
1041 return 0;
1042 }
1043 if (!strcmp(uinfo->value.enumerated.name, str)) {
1044 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1045 break;
1046 }
1047 }
1048 }
1049 kfree(uinfo);
1050 }
1051 up_read(&mixer->card->controls_rwsem);
1052 if (slot.present != 0) {
1053 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1054 if (! pslot)
1055 return -ENOMEM;
1056 *pslot = slot;
1057 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1058 pslot->assigned = ptr;
1059 pslot->allocated = ptr_allocated;
1060 rslot = &mixer->slots[ptr->oss_id];
1061 mixer_slot_clear(rslot);
1062 rslot->stereo = slot.channels > 1 ? 1 : 0;
1063 rslot->get_volume = snd_mixer_oss_get_volume1;
1064 rslot->put_volume = snd_mixer_oss_put_volume1;
1065 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1066 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1067 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1068 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1069 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1070 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1071 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1072 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1073 mixer->mask_recsrc |= 1 << ptr->oss_id;
1074 }
1075 rslot->private_data = pslot;
1076 rslot->private_free = snd_mixer_oss_slot_free;
1077 return 1;
1078 }
1079 return 0;
1080 }
1081
1082 #ifdef CONFIG_PROC_FS
1083 /*
1084 */
1085 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1086 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1087 MIXER_VOL(VOLUME),
1088 MIXER_VOL(BASS),
1089 MIXER_VOL(TREBLE),
1090 MIXER_VOL(SYNTH),
1091 MIXER_VOL(PCM),
1092 MIXER_VOL(SPEAKER),
1093 MIXER_VOL(LINE),
1094 MIXER_VOL(MIC),
1095 MIXER_VOL(CD),
1096 MIXER_VOL(IMIX),
1097 MIXER_VOL(ALTPCM),
1098 MIXER_VOL(RECLEV),
1099 MIXER_VOL(IGAIN),
1100 MIXER_VOL(OGAIN),
1101 MIXER_VOL(LINE1),
1102 MIXER_VOL(LINE2),
1103 MIXER_VOL(LINE3),
1104 MIXER_VOL(DIGITAL1),
1105 MIXER_VOL(DIGITAL2),
1106 MIXER_VOL(DIGITAL3),
1107 MIXER_VOL(PHONEIN),
1108 MIXER_VOL(PHONEOUT),
1109 MIXER_VOL(VIDEO),
1110 MIXER_VOL(RADIO),
1111 MIXER_VOL(MONITOR),
1112 };
1113
1114 /*
1115 * /proc interface
1116 */
1117
1118 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1119 struct snd_info_buffer *buffer)
1120 {
1121 struct snd_mixer_oss *mixer = entry->private_data;
1122 int i;
1123
1124 mutex_lock(&mixer->reg_mutex);
1125 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1126 struct slot *p;
1127
1128 if (! oss_mixer_names[i])
1129 continue;
1130 p = (struct slot *)mixer->slots[i].private_data;
1131 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1132 if (p && p->assigned)
1133 snd_iprintf(buffer, "\"%s\" %d\n",
1134 p->assigned->name,
1135 p->assigned->index);
1136 else
1137 snd_iprintf(buffer, "\"\" 0\n");
1138 }
1139 mutex_unlock(&mixer->reg_mutex);
1140 }
1141
1142 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1143 struct snd_info_buffer *buffer)
1144 {
1145 struct snd_mixer_oss *mixer = entry->private_data;
1146 char line[128], str[32], idxstr[16], *cptr;
1147 int ch, idx;
1148 struct snd_mixer_oss_assign_table *tbl;
1149 struct slot *slot;
1150
1151 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1152 cptr = snd_info_get_str(str, line, sizeof(str));
1153 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1154 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1155 break;
1156 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1157 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1158 continue;
1159 }
1160 cptr = snd_info_get_str(str, cptr, sizeof(str));
1161 if (! *str) {
1162 /* remove the entry */
1163 mutex_lock(&mixer->reg_mutex);
1164 mixer_slot_clear(&mixer->slots[ch]);
1165 mutex_unlock(&mixer->reg_mutex);
1166 continue;
1167 }
1168 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1169 idx = simple_strtoul(idxstr, NULL, 10);
1170 if (idx >= 0x4000) { /* too big */
1171 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1172 continue;
1173 }
1174 mutex_lock(&mixer->reg_mutex);
1175 slot = (struct slot *)mixer->slots[ch].private_data;
1176 if (slot && slot->assigned &&
1177 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1178 /* not changed */
1179 goto __unlock;
1180 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1181 if (! tbl) {
1182 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1183 goto __unlock;
1184 }
1185 tbl->oss_id = ch;
1186 tbl->name = kstrdup(str, GFP_KERNEL);
1187 if (! tbl->name) {
1188 kfree(tbl);
1189 goto __unlock;
1190 }
1191 tbl->index = idx;
1192 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1193 kfree(tbl->name);
1194 kfree(tbl);
1195 }
1196 __unlock:
1197 mutex_unlock(&mixer->reg_mutex);
1198 }
1199 }
1200
1201 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1202 {
1203 struct snd_info_entry *entry;
1204
1205 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1206 mixer->card->proc_root);
1207 if (! entry)
1208 return;
1209 entry->content = SNDRV_INFO_CONTENT_TEXT;
1210 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1211 entry->c.text.read = snd_mixer_oss_proc_read;
1212 entry->c.text.write = snd_mixer_oss_proc_write;
1213 entry->private_data = mixer;
1214 if (snd_info_register(entry) < 0) {
1215 snd_info_free_entry(entry);
1216 entry = NULL;
1217 }
1218 mixer->proc_entry = entry;
1219 }
1220
1221 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1222 {
1223 snd_info_free_entry(mixer->proc_entry);
1224 mixer->proc_entry = NULL;
1225 }
1226 #else /* !CONFIG_PROC_FS */
1227 #define snd_mixer_oss_proc_init(mix)
1228 #define snd_mixer_oss_proc_done(mix)
1229 #endif /* CONFIG_PROC_FS */
1230
1231 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1232 {
1233 static struct snd_mixer_oss_assign_table table[] = {
1234 { SOUND_MIXER_VOLUME, "Master", 0 },
1235 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1236 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1237 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1238 { SOUND_MIXER_SYNTH, "Synth", 0 },
1239 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1240 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1241 { SOUND_MIXER_PCM, "PCM", 0 },
1242 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
1243 { SOUND_MIXER_LINE, "Line", 0 },
1244 { SOUND_MIXER_MIC, "Mic", 0 },
1245 { SOUND_MIXER_CD, "CD", 0 },
1246 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1247 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1248 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1249 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1250 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1251 { SOUND_MIXER_IGAIN, "Capture", 0 },
1252 { SOUND_MIXER_OGAIN, "Playback", 0 },
1253 { SOUND_MIXER_LINE1, "Aux", 0 },
1254 { SOUND_MIXER_LINE2, "Aux", 1 },
1255 { SOUND_MIXER_LINE3, "Aux", 2 },
1256 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1257 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1258 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1259 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1260 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1261 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1262 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1263 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1264 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1265 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1266 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1267 { SOUND_MIXER_VIDEO, "Video", 0 },
1268 { SOUND_MIXER_RADIO, "Radio", 0 },
1269 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1270 };
1271 unsigned int idx;
1272
1273 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1274 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1275 if (mixer->mask_recsrc) {
1276 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1277 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1278 }
1279 }
1280
1281 /*
1282 *
1283 */
1284
1285 static int snd_mixer_oss_free1(void *private)
1286 {
1287 struct snd_mixer_oss *mixer = private;
1288 struct snd_card *card;
1289 int idx;
1290
1291 if (!mixer)
1292 return 0;
1293 card = mixer->card;
1294 if (snd_BUG_ON(mixer != card->mixer_oss))
1295 return -ENXIO;
1296 card->mixer_oss = NULL;
1297 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1298 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1299 if (chn->private_free)
1300 chn->private_free(chn);
1301 }
1302 kfree(mixer);
1303 return 0;
1304 }
1305
1306 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1307 {
1308 struct snd_mixer_oss *mixer;
1309
1310 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1311 char name[128];
1312 int idx, err;
1313
1314 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1315 if (mixer == NULL)
1316 return -ENOMEM;
1317 mutex_init(&mixer->reg_mutex);
1318 sprintf(name, "mixer%i%i", card->number, 0);
1319 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1320 card, 0,
1321 &snd_mixer_oss_f_ops, card,
1322 name)) < 0) {
1323 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1324 card->number, 0);
1325 kfree(mixer);
1326 return err;
1327 }
1328 mixer->oss_dev_alloc = 1;
1329 mixer->card = card;
1330 if (*card->mixername)
1331 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1332 else
1333 strlcpy(mixer->name, name, sizeof(mixer->name));
1334 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1335 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1336 card->number,
1337 mixer->name);
1338 #endif
1339 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1340 mixer->slots[idx].number = idx;
1341 card->mixer_oss = mixer;
1342 snd_mixer_oss_build(mixer);
1343 snd_mixer_oss_proc_init(mixer);
1344 } else {
1345 mixer = card->mixer_oss;
1346 if (mixer == NULL)
1347 return 0;
1348 if (mixer->oss_dev_alloc) {
1349 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1350 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1351 #endif
1352 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1353 mixer->oss_dev_alloc = 0;
1354 }
1355 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1356 return 0;
1357 snd_mixer_oss_proc_done(mixer);
1358 return snd_mixer_oss_free1(mixer);
1359 }
1360 return 0;
1361 }
1362
1363 static int __init alsa_mixer_oss_init(void)
1364 {
1365 int idx;
1366
1367 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1368 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1369 if (snd_cards[idx])
1370 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1371 }
1372 return 0;
1373 }
1374
1375 static void __exit alsa_mixer_oss_exit(void)
1376 {
1377 int idx;
1378
1379 snd_mixer_oss_notify_callback = NULL;
1380 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1381 if (snd_cards[idx])
1382 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1383 }
1384 }
1385
1386 module_init(alsa_mixer_oss_init)
1387 module_exit(alsa_mixer_oss_exit)
1388
1389 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
Linux kernel - Deliverables
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