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