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RT-AC56 3.0.0.4.374.37 core
[tomato.git] / release / src-rt-6.x.4708 / linux / linux-2.6.36 / sound / core / oss / mixer_oss.c
blob6716c8ae77a8132fe730314f2437e56f406f8fd4
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 err = nonseekable_open(inode, file);
47 if (err < 0)
48 return err;
49
50 card = snd_lookup_oss_minor_data(iminor(inode),
51 SNDRV_OSS_DEVICE_TYPE_MIXER);
52 if (card == NULL)
53 return -ENODEV;
54 if (card->mixer_oss == NULL)
55 return -ENODEV;
56 err = snd_card_file_add(card, file);
57 if (err < 0)
58 return err;
59 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
60 if (fmixer == NULL) {
61 snd_card_file_remove(card, file);
62 return -ENOMEM;
63 }
64 fmixer->card = card;
65 fmixer->mixer = card->mixer_oss;
66 file->private_data = fmixer;
67 if (!try_module_get(card->module)) {
68 kfree(fmixer);
69 snd_card_file_remove(card, file);
70 return -EFAULT;
71 }
72 return 0;
73 }
74
75 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
76 {
77 struct snd_mixer_oss_file *fmixer;
78
79 if (file->private_data) {
80 fmixer = (struct snd_mixer_oss_file *) file->private_data;
81 module_put(fmixer->card->module);
82 snd_card_file_remove(fmixer->card, file);
83 kfree(fmixer);
84 }
85 return 0;
86 }
87
88 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
89 mixer_info __user *_info)
90 {
91 struct snd_card *card = fmixer->card;
92 struct snd_mixer_oss *mixer = fmixer->mixer;
93 struct mixer_info info;
94
95 memset(&info, 0, sizeof(info));
96 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
97 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
98 info.modify_counter = card->mixer_oss_change_count;
99 if (copy_to_user(_info, &info, sizeof(info)))
100 return -EFAULT;
101 return 0;
102 }
103
104 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
105 _old_mixer_info __user *_info)
106 {
107 struct snd_card *card = fmixer->card;
108 struct snd_mixer_oss *mixer = fmixer->mixer;
109 _old_mixer_info info;
110
111 memset(&info, 0, sizeof(info));
112 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
113 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
114 if (copy_to_user(_info, &info, sizeof(info)))
115 return -EFAULT;
116 return 0;
117 }
118
119 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
120 {
121 struct snd_mixer_oss *mixer = fmixer->mixer;
122 int result = 0;
123
124 if (mixer == NULL)
125 return -EIO;
126 if (mixer->get_recsrc && mixer->put_recsrc)
127 result |= SOUND_CAP_EXCL_INPUT;
128 return result;
129 }
130
131 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
132 {
133 struct snd_mixer_oss *mixer = fmixer->mixer;
134 struct snd_mixer_oss_slot *pslot;
135 int result = 0, chn;
136
137 if (mixer == NULL)
138 return -EIO;
139 for (chn = 0; chn < 31; chn++) {
140 pslot = &mixer->slots[chn];
141 if (pslot->put_volume || pslot->put_recsrc)
142 result |= 1 << chn;
143 }
144 return result;
145 }
146
147 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
148 {
149 struct snd_mixer_oss *mixer = fmixer->mixer;
150 struct snd_mixer_oss_slot *pslot;
151 int result = 0, chn;
152
153 if (mixer == NULL)
154 return -EIO;
155 for (chn = 0; chn < 31; chn++) {
156 pslot = &mixer->slots[chn];
157 if (pslot->put_volume && pslot->stereo)
158 result |= 1 << chn;
159 }
160 return result;
161 }
162
163 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
164 {
165 struct snd_mixer_oss *mixer = fmixer->mixer;
166 int result = 0;
167
168 if (mixer == NULL)
169 return -EIO;
170 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
171 result = mixer->mask_recsrc;
172 } else {
173 struct snd_mixer_oss_slot *pslot;
174 int chn;
175 for (chn = 0; chn < 31; chn++) {
176 pslot = &mixer->slots[chn];
177 if (pslot->put_recsrc)
178 result |= 1 << chn;
179 }
180 }
181 return result;
182 }
183
184 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
185 {
186 struct snd_mixer_oss *mixer = fmixer->mixer;
187 int result = 0;
188
189 if (mixer == NULL)
190 return -EIO;
191 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
192 int err;
193 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
194 return err;
195 result = 1 << result;
196 } else {
197 struct snd_mixer_oss_slot *pslot;
198 int chn;
199 for (chn = 0; chn < 31; chn++) {
200 pslot = &mixer->slots[chn];
201 if (pslot->get_recsrc) {
202 int active = 0;
203 pslot->get_recsrc(fmixer, pslot, &active);
204 if (active)
205 result |= 1 << chn;
206 }
207 }
208 }
209 return mixer->oss_recsrc = result;
210 }
211
212 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
213 {
214 struct snd_mixer_oss *mixer = fmixer->mixer;
215 struct snd_mixer_oss_slot *pslot;
216 int chn, active;
217 int result = 0;
218
219 if (mixer == NULL)
220 return -EIO;
221 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
222 if (recsrc & ~mixer->oss_recsrc)
223 recsrc &= ~mixer->oss_recsrc;
224 mixer->put_recsrc(fmixer, ffz(~recsrc));
225 mixer->get_recsrc(fmixer, &result);
226 result = 1 << result;
227 }
228 for (chn = 0; chn < 31; chn++) {
229 pslot = &mixer->slots[chn];
230 if (pslot->put_recsrc) {
231 active = (recsrc & (1 << chn)) ? 1 : 0;
232 pslot->put_recsrc(fmixer, pslot, active);
233 }
234 }
235 if (! result) {
236 for (chn = 0; chn < 31; chn++) {
237 pslot = &mixer->slots[chn];
238 if (pslot->get_recsrc) {
239 active = 0;
240 pslot->get_recsrc(fmixer, pslot, &active);
241 if (active)
242 result |= 1 << chn;
243 }
244 }
245 }
246 return result;
247 }
248
249 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
250 {
251 struct snd_mixer_oss *mixer = fmixer->mixer;
252 struct snd_mixer_oss_slot *pslot;
253 int result = 0, left, right;
254
255 if (mixer == NULL || slot > 30)
256 return -EIO;
257 pslot = &mixer->slots[slot];
258 left = pslot->volume[0];
259 right = pslot->volume[1];
260 if (pslot->get_volume)
261 result = pslot->get_volume(fmixer, pslot, &left, &right);
262 if (!pslot->stereo)
263 right = left;
264 if (snd_BUG_ON(left < 0 || left > 100))
265 return -EIO;
266 if (snd_BUG_ON(right < 0 || right > 100))
267 return -EIO;
268 if (result >= 0) {
269 pslot->volume[0] = left;
270 pslot->volume[1] = right;
271 result = (left & 0xff) | ((right & 0xff) << 8);
272 }
273 return result;
274 }
275
276 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
277 int slot, int volume)
278 {
279 struct snd_mixer_oss *mixer = fmixer->mixer;
280 struct snd_mixer_oss_slot *pslot;
281 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
282
283 if (mixer == NULL || slot > 30)
284 return -EIO;
285 pslot = &mixer->slots[slot];
286 if (left > 100)
287 left = 100;
288 if (right > 100)
289 right = 100;
290 if (!pslot->stereo)
291 right = left;
292 if (pslot->put_volume)
293 result = pslot->put_volume(fmixer, pslot, left, right);
294 if (result < 0)
295 return result;
296 pslot->volume[0] = left;
297 pslot->volume[1] = right;
298 return (left & 0xff) | ((right & 0xff) << 8);
299 }
300
301 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
302 {
303 void __user *argp = (void __user *)arg;
304 int __user *p = argp;
305 int tmp;
306
307 if (snd_BUG_ON(!fmixer))
308 return -ENXIO;
309 if (((cmd >> 8) & 0xff) == 'M') {
310 switch (cmd) {
311 case SOUND_MIXER_INFO:
312 return snd_mixer_oss_info(fmixer, argp);
313 case SOUND_OLD_MIXER_INFO:
314 return snd_mixer_oss_info_obsolete(fmixer, argp);
315 case SOUND_MIXER_WRITE_RECSRC:
316 if (get_user(tmp, p))
317 return -EFAULT;
318 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
319 if (tmp < 0)
320 return tmp;
321 return put_user(tmp, p);
322 case OSS_GETVERSION:
323 return put_user(SNDRV_OSS_VERSION, p);
324 case OSS_ALSAEMULVER:
325 return put_user(1, p);
326 case SOUND_MIXER_READ_DEVMASK:
327 tmp = snd_mixer_oss_devmask(fmixer);
328 if (tmp < 0)
329 return tmp;
330 return put_user(tmp, p);
331 case SOUND_MIXER_READ_STEREODEVS:
332 tmp = snd_mixer_oss_stereodevs(fmixer);
333 if (tmp < 0)
334 return tmp;
335 return put_user(tmp, p);
336 case SOUND_MIXER_READ_RECMASK:
337 tmp = snd_mixer_oss_recmask(fmixer);
338 if (tmp < 0)
339 return tmp;
340 return put_user(tmp, p);
341 case SOUND_MIXER_READ_CAPS:
342 tmp = snd_mixer_oss_caps(fmixer);
343 if (tmp < 0)
344 return tmp;
345 return put_user(tmp, p);
346 case SOUND_MIXER_READ_RECSRC:
347 tmp = snd_mixer_oss_get_recsrc(fmixer);
348 if (tmp < 0)
349 return tmp;
350 return put_user(tmp, p);
351 }
352 }
353 if (cmd & SIOC_IN) {
354 if (get_user(tmp, p))
355 return -EFAULT;
356 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
357 if (tmp < 0)
358 return tmp;
359 return put_user(tmp, p);
360 } else if (cmd & SIOC_OUT) {
361 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
362 if (tmp < 0)
363 return tmp;
364 return put_user(tmp, p);
365 }
366 return -ENXIO;
367 }
368
369 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
370 {
371 return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
372 }
373
374 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
375 {
376 struct snd_mixer_oss_file fmixer;
377
378 if (snd_BUG_ON(!card))
379 return -ENXIO;
380 if (card->mixer_oss == NULL)
381 return -ENXIO;
382 memset(&fmixer, 0, sizeof(fmixer));
383 fmixer.card = card;
384 fmixer.mixer = card->mixer_oss;
385 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
386 }
387
388 #ifdef CONFIG_COMPAT
389 /* all compatible */
390 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
391 #else
392 #define snd_mixer_oss_ioctl_compat NULL
393 #endif
394
395 /*
396 * REGISTRATION PART
397 */
398
399 static const struct file_operations snd_mixer_oss_f_ops =
400 {
401 .owner = THIS_MODULE,
402 .open = snd_mixer_oss_open,
403 .release = snd_mixer_oss_release,
404 .llseek = no_llseek,
405 .unlocked_ioctl = snd_mixer_oss_ioctl,
406 .compat_ioctl = snd_mixer_oss_ioctl_compat,
407 };
408
409 /*
410 * utilities
411 */
412
413 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
414 {
415 long orange = omax - omin, nrange = nmax - nmin;
416
417 if (orange == 0)
418 return 0;
419 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
420 }
421
422 /* convert from alsa native to oss values (0-100) */
423 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
424 {
425 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
426 return *old;
427 return snd_mixer_oss_conv(val, min, max, 0, 100);
428 }
429
430 /* convert from oss to alsa native values */
431 static long snd_mixer_oss_conv2(long val, long min, long max)
432 {
433 return snd_mixer_oss_conv(val, 0, 100, min, max);
434 }
435
436
437 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
438
439 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
440 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
441 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
442 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
443 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
444 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
445 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
446 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
447 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
448 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
449 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
450
451 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
452
453 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
454 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
455 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
456 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
457 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
458 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
459 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
460 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
461 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
462 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
463 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
464
465 struct slot {
466 unsigned int signature;
467 unsigned int present;
468 unsigned int channels;
469 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
470 unsigned int capture_item;
471 struct snd_mixer_oss_assign_table *assigned;
472 unsigned int allocated: 1;
473 };
474
475 #define ID_UNKNOWN ((unsigned int)-1)
476
477 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
478 {
479 struct snd_card *card = mixer->card;
480 struct snd_ctl_elem_id id;
481
482 memset(&id, 0, sizeof(id));
483 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
484 strcpy(id.name, name);
485 id.index = index;
486 return snd_ctl_find_id(card, &id);
487 }
488
489 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
490 struct snd_mixer_oss_slot *pslot,
491 unsigned int numid,
492 int *left, int *right)
493 {
494 struct snd_ctl_elem_info *uinfo;
495 struct snd_ctl_elem_value *uctl;
496 struct snd_kcontrol *kctl;
497 struct snd_card *card = fmixer->card;
498
499 if (numid == ID_UNKNOWN)
500 return;
501 down_read(&card->controls_rwsem);
502 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
503 up_read(&card->controls_rwsem);
504 return;
505 }
506 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
507 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
508 if (uinfo == NULL || uctl == NULL)
509 goto __unalloc;
510 if (kctl->info(kctl, uinfo))
511 goto __unalloc;
512 if (kctl->get(kctl, uctl))
513 goto __unalloc;
514 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
515 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
516 goto __unalloc;
517 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
518 if (uinfo->count > 1)
519 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
520 __unalloc:
521 up_read(&card->controls_rwsem);
522 kfree(uctl);
523 kfree(uinfo);
524 }
525
526 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
527 struct snd_mixer_oss_slot *pslot,
528 unsigned int numid,
529 int *left, int *right,
530 int route)
531 {
532 struct snd_ctl_elem_info *uinfo;
533 struct snd_ctl_elem_value *uctl;
534 struct snd_kcontrol *kctl;
535 struct snd_card *card = fmixer->card;
536
537 if (numid == ID_UNKNOWN)
538 return;
539 down_read(&card->controls_rwsem);
540 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
541 up_read(&card->controls_rwsem);
542 return;
543 }
544 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
545 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
546 if (uinfo == NULL || uctl == NULL)
547 goto __unalloc;
548 if (kctl->info(kctl, uinfo))
549 goto __unalloc;
550 if (kctl->get(kctl, uctl))
551 goto __unalloc;
552 if (!uctl->value.integer.value[0]) {
553 *left = 0;
554 if (uinfo->count == 1)
555 *right = 0;
556 }
557 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
558 *right = 0;
559 __unalloc:
560 up_read(&card->controls_rwsem);
561 kfree(uctl);
562 kfree(uinfo);
563 }
564
565 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
566 struct snd_mixer_oss_slot *pslot,
567 int *left, int *right)
568 {
569 struct slot *slot = (struct slot *)pslot->private_data;
570
571 *left = *right = 100;
572 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
573 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
574 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
575 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
576 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
577 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
578 }
579 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
580 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
581 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
582 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
583 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
584 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
585 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
586 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
587 }
588 return 0;
589 }
590
591 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
592 struct snd_mixer_oss_slot *pslot,
593 unsigned int numid,
594 int left, int right)
595 {
596 struct snd_ctl_elem_info *uinfo;
597 struct snd_ctl_elem_value *uctl;
598 struct snd_kcontrol *kctl;
599 struct snd_card *card = fmixer->card;
600 int res;
601
602 if (numid == ID_UNKNOWN)
603 return;
604 down_read(&card->controls_rwsem);
605 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
606 up_read(&card->controls_rwsem);
607 return;
608 }
609 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
610 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
611 if (uinfo == NULL || uctl == NULL)
612 goto __unalloc;
613 if (kctl->info(kctl, uinfo))
614 goto __unalloc;
615 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
616 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
617 goto __unalloc;
618 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
619 if (uinfo->count > 1)
620 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
621 if ((res = kctl->put(kctl, uctl)) < 0)
622 goto __unalloc;
623 if (res > 0)
624 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
625 __unalloc:
626 up_read(&card->controls_rwsem);
627 kfree(uctl);
628 kfree(uinfo);
629 }
630
631 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
632 struct snd_mixer_oss_slot *pslot,
633 unsigned int numid,
634 int left, int right,
635 int route)
636 {
637 struct snd_ctl_elem_info *uinfo;
638 struct snd_ctl_elem_value *uctl;
639 struct snd_kcontrol *kctl;
640 struct snd_card *card = fmixer->card;
641 int res;
642
643 if (numid == ID_UNKNOWN)
644 return;
645 down_read(&card->controls_rwsem);
646 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
647 up_read(&card->controls_rwsem);
648 return;
649 }
650 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
651 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
652 if (uinfo == NULL || uctl == NULL)
653 goto __unalloc;
654 if (kctl->info(kctl, uinfo))
655 goto __unalloc;
656 if (uinfo->count > 1) {
657 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
658 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
659 if (route) {
660 uctl->value.integer.value[1] =
661 uctl->value.integer.value[2] = 0;
662 }
663 } else {
664 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
665 }
666 if ((res = kctl->put(kctl, uctl)) < 0)
667 goto __unalloc;
668 if (res > 0)
669 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
670 __unalloc:
671 up_read(&card->controls_rwsem);
672 kfree(uctl);
673 kfree(uinfo);
674 }
675
676 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
677 struct snd_mixer_oss_slot *pslot,
678 int left, int right)
679 {
680 struct slot *slot = (struct slot *)pslot->private_data;
681
682 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
683 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
684 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
685 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
686 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
687 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
688 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
689 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
690 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
691 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
692 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
693 }
694 if (left || right) {
695 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
696 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
697 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
698 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
699 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
700 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
701 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
702 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
703 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
704 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
705 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
706 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
707 } else {
708 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
709 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
710 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], 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_CROUTE) {
717 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
718 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
719 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
720 }
721 }
722 return 0;
723 }
724
725 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
726 struct snd_mixer_oss_slot *pslot,
727 int *active)
728 {
729 struct slot *slot = (struct slot *)pslot->private_data;
730 int left, right;
731
732 left = right = 1;
733 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
734 *active = (left || right) ? 1 : 0;
735 return 0;
736 }
737
738 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
739 struct snd_mixer_oss_slot *pslot,
740 int *active)
741 {
742 struct slot *slot = (struct slot *)pslot->private_data;
743 int left, right;
744
745 left = right = 1;
746 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
747 *active = (left || right) ? 1 : 0;
748 return 0;
749 }
750
751 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
752 struct snd_mixer_oss_slot *pslot,
753 int active)
754 {
755 struct slot *slot = (struct slot *)pslot->private_data;
756
757 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
758 return 0;
759 }
760
761 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
762 struct snd_mixer_oss_slot *pslot,
763 int active)
764 {
765 struct slot *slot = (struct slot *)pslot->private_data;
766
767 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
768 return 0;
769 }
770
771 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
772 {
773 struct snd_card *card = fmixer->card;
774 struct snd_mixer_oss *mixer = fmixer->mixer;
775 struct snd_kcontrol *kctl;
776 struct snd_mixer_oss_slot *pslot;
777 struct slot *slot;
778 struct snd_ctl_elem_info *uinfo;
779 struct snd_ctl_elem_value *uctl;
780 int err, idx;
781
782 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
783 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
784 if (uinfo == NULL || uctl == NULL) {
785 err = -ENOMEM;
786 goto __free_only;
787 }
788 down_read(&card->controls_rwsem);
789 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
790 if (! kctl) {
791 err = -ENOENT;
792 goto __unlock;
793 }
794 if ((err = kctl->info(kctl, uinfo)) < 0)
795 goto __unlock;
796 if ((err = kctl->get(kctl, uctl)) < 0)
797 goto __unlock;
798 for (idx = 0; idx < 32; idx++) {
799 if (!(mixer->mask_recsrc & (1 << idx)))
800 continue;
801 pslot = &mixer->slots[idx];
802 slot = (struct slot *)pslot->private_data;
803 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
804 continue;
805 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
806 continue;
807 if (slot->capture_item == uctl->value.enumerated.item[0]) {
808 *active_index = idx;
809 break;
810 }
811 }
812 err = 0;
813 __unlock:
814 up_read(&card->controls_rwsem);
815 __free_only:
816 kfree(uctl);
817 kfree(uinfo);
818 return err;
819 }
820
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 __free_only;
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 __free_only:
871 kfree(uctl);
872 kfree(uinfo);
873 return err;
874 }
875
876 struct snd_mixer_oss_assign_table {
877 int oss_id;
878 const char *name;
879 int index;
880 };
881
882 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
883 {
884 struct snd_ctl_elem_info *info;
885 struct snd_kcontrol *kcontrol;
886 struct snd_card *card = mixer->card;
887 int err;
888
889 down_read(&card->controls_rwsem);
890 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
891 if (kcontrol == NULL) {
892 up_read(&card->controls_rwsem);
893 return 0;
894 }
895 info = kmalloc(sizeof(*info), GFP_KERNEL);
896 if (! info) {
897 up_read(&card->controls_rwsem);
898 return -ENOMEM;
899 }
900 if ((err = kcontrol->info(kcontrol, info)) < 0) {
901 up_read(&card->controls_rwsem);
902 kfree(info);
903 return err;
904 }
905 slot->numid[item] = kcontrol->id.numid;
906 up_read(&card->controls_rwsem);
907 if (info->count > slot->channels)
908 slot->channels = info->count;
909 slot->present |= 1 << item;
910 kfree(info);
911 return 0;
912 }
913
914 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
915 {
916 struct slot *p = (struct slot *)chn->private_data;
917 if (p) {
918 if (p->allocated && p->assigned) {
919 kfree(p->assigned->name);
920 kfree(p->assigned);
921 }
922 kfree(p);
923 }
924 }
925
926 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
927 {
928 int idx = rslot->number; /* remember this */
929 if (rslot->private_free)
930 rslot->private_free(rslot);
931 memset(rslot, 0, sizeof(*rslot));
932 rslot->number = idx;
933 }
934
935 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
936 snd_mixer_oss_build_input! */
937 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
938 struct snd_mixer_oss_assign_table *ptr,
939 struct slot *slot)
940 {
941 char str[64];
942 int err;
943
944 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
945 SNDRV_MIXER_OSS_ITEM_GLOBAL);
946 if (err)
947 return err;
948 sprintf(str, "%s Switch", ptr->name);
949 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
950 SNDRV_MIXER_OSS_ITEM_GSWITCH);
951 if (err)
952 return err;
953 sprintf(str, "%s Route", ptr->name);
954 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
955 SNDRV_MIXER_OSS_ITEM_GROUTE);
956 if (err)
957 return err;
958 sprintf(str, "%s Volume", ptr->name);
959 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
960 SNDRV_MIXER_OSS_ITEM_GVOLUME);
961 if (err)
962 return err;
963 sprintf(str, "%s Playback Switch", ptr->name);
964 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
965 SNDRV_MIXER_OSS_ITEM_PSWITCH);
966 if (err)
967 return err;
968 sprintf(str, "%s Playback Route", ptr->name);
969 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
970 SNDRV_MIXER_OSS_ITEM_PROUTE);
971 if (err)
972 return err;
973 sprintf(str, "%s Playback Volume", ptr->name);
974 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
975 SNDRV_MIXER_OSS_ITEM_PVOLUME);
976 if (err)
977 return err;
978 sprintf(str, "%s Capture Switch", ptr->name);
979 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
980 SNDRV_MIXER_OSS_ITEM_CSWITCH);
981 if (err)
982 return err;
983 sprintf(str, "%s Capture Route", ptr->name);
984 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
985 SNDRV_MIXER_OSS_ITEM_CROUTE);
986 if (err)
987 return err;
988 sprintf(str, "%s Capture Volume", ptr->name);
989 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
990 SNDRV_MIXER_OSS_ITEM_CVOLUME);
991 if (err)
992 return err;
993
994 return 0;
995 }
996
997 /*
998 * build an OSS mixer element.
999 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1000 * when replace_old = 1, the old entry is replaced with the new one.
1001 */
1002 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)
1003 {
1004 struct slot slot;
1005 struct slot *pslot;
1006 struct snd_kcontrol *kctl;
1007 struct snd_mixer_oss_slot *rslot;
1008 char str[64];
1009
1010 /* check if already assigned */
1011 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1012 return 0;
1013
1014 memset(&slot, 0, sizeof(slot));
1015 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1016 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1017 return 0;
1018 down_read(&mixer->card->controls_rwsem);
1019 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1020 struct snd_ctl_elem_info *uinfo;
1021
1022 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1023 if (! uinfo) {
1024 up_read(&mixer->card->controls_rwsem);
1025 return -ENOMEM;
1026 }
1027
1028 if (kctl->info(kctl, uinfo)) {
1029 up_read(&mixer->card->controls_rwsem);
1030 return 0;
1031 }
1032 strcpy(str, ptr->name);
1033 if (!strcmp(str, "Master"))
1034 strcpy(str, "Mix");
1035 if (!strcmp(str, "Master Mono"))
1036 strcpy(str, "Mix Mono");
1037 slot.capture_item = 0;
1038 if (!strcmp(uinfo->value.enumerated.name, str)) {
1039 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1040 } else {
1041 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1042 uinfo->value.enumerated.item = slot.capture_item;
1043 if (kctl->info(kctl, uinfo)) {
1044 up_read(&mixer->card->controls_rwsem);
1045 return 0;
1046 }
1047 if (!strcmp(uinfo->value.enumerated.name, str)) {
1048 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1049 break;
1050 }
1051 }
1052 }
1053 kfree(uinfo);
1054 }
1055 up_read(&mixer->card->controls_rwsem);
1056 if (slot.present != 0) {
1057 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1058 if (! pslot)
1059 return -ENOMEM;
1060 *pslot = slot;
1061 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1062 pslot->assigned = ptr;
1063 pslot->allocated = ptr_allocated;
1064 rslot = &mixer->slots[ptr->oss_id];
1065 mixer_slot_clear(rslot);
1066 rslot->stereo = slot.channels > 1 ? 1 : 0;
1067 rslot->get_volume = snd_mixer_oss_get_volume1;
1068 rslot->put_volume = snd_mixer_oss_put_volume1;
1069 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1070 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1071 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1072 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1073 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1074 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1075 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1076 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1077 mixer->mask_recsrc |= 1 << ptr->oss_id;
1078 }
1079 rslot->private_data = pslot;
1080 rslot->private_free = snd_mixer_oss_slot_free;
1081 return 1;
1082 }
1083 return 0;
1084 }
1085
1086 #ifdef CONFIG_PROC_FS
1087 /*
1088 */
1089 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1090 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1091 MIXER_VOL(VOLUME),
1092 MIXER_VOL(BASS),
1093 MIXER_VOL(TREBLE),
1094 MIXER_VOL(SYNTH),
1095 MIXER_VOL(PCM),
1096 MIXER_VOL(SPEAKER),
1097 MIXER_VOL(LINE),
1098 MIXER_VOL(MIC),
1099 MIXER_VOL(CD),
1100 MIXER_VOL(IMIX),
1101 MIXER_VOL(ALTPCM),
1102 MIXER_VOL(RECLEV),
1103 MIXER_VOL(IGAIN),
1104 MIXER_VOL(OGAIN),
1105 MIXER_VOL(LINE1),
1106 MIXER_VOL(LINE2),
1107 MIXER_VOL(LINE3),
1108 MIXER_VOL(DIGITAL1),
1109 MIXER_VOL(DIGITAL2),
1110 MIXER_VOL(DIGITAL3),
1111 MIXER_VOL(PHONEIN),
1112 MIXER_VOL(PHONEOUT),
1113 MIXER_VOL(VIDEO),
1114 MIXER_VOL(RADIO),
1115 MIXER_VOL(MONITOR),
1116 };
1117
1118 /*
1119 * /proc interface
1120 */
1121
1122 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1123 struct snd_info_buffer *buffer)
1124 {
1125 struct snd_mixer_oss *mixer = entry->private_data;
1126 int i;
1127
1128 mutex_lock(&mixer->reg_mutex);
1129 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1130 struct slot *p;
1131
1132 if (! oss_mixer_names[i])
1133 continue;
1134 p = (struct slot *)mixer->slots[i].private_data;
1135 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1136 if (p && p->assigned)
1137 snd_iprintf(buffer, "\"%s\" %d\n",
1138 p->assigned->name,
1139 p->assigned->index);
1140 else
1141 snd_iprintf(buffer, "\"\" 0\n");
1142 }
1143 mutex_unlock(&mixer->reg_mutex);
1144 }
1145
1146 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1147 struct snd_info_buffer *buffer)
1148 {
1149 struct snd_mixer_oss *mixer = entry->private_data;
1150 char line[128], str[32], idxstr[16];
1151 const char *cptr;
1152 int ch, idx;
1153 struct snd_mixer_oss_assign_table *tbl;
1154 struct slot *slot;
1155
1156 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1157 cptr = snd_info_get_str(str, line, sizeof(str));
1158 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1159 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1160 break;
1161 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1162 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1163 continue;
1164 }
1165 cptr = snd_info_get_str(str, cptr, sizeof(str));
1166 if (! *str) {
1167 /* remove the entry */
1168 mutex_lock(&mixer->reg_mutex);
1169 mixer_slot_clear(&mixer->slots[ch]);
1170 mutex_unlock(&mixer->reg_mutex);
1171 continue;
1172 }
1173 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1174 idx = simple_strtoul(idxstr, NULL, 10);
1175 if (idx >= 0x4000) { /* too big */
1176 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1177 continue;
1178 }
1179 mutex_lock(&mixer->reg_mutex);
1180 slot = (struct slot *)mixer->slots[ch].private_data;
1181 if (slot && slot->assigned &&
1182 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1183 /* not changed */
1184 goto __unlock;
1185 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1186 if (! tbl) {
1187 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1188 goto __unlock;
1189 }
1190 tbl->oss_id = ch;
1191 tbl->name = kstrdup(str, GFP_KERNEL);
1192 if (! tbl->name) {
1193 kfree(tbl);
1194 goto __unlock;
1195 }
1196 tbl->index = idx;
1197 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1198 kfree(tbl->name);
1199 kfree(tbl);
1200 }
1201 __unlock:
1202 mutex_unlock(&mixer->reg_mutex);
1203 }
1204 }
1205
1206 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1207 {
1208 struct snd_info_entry *entry;
1209
1210 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1211 mixer->card->proc_root);
1212 if (! entry)
1213 return;
1214 entry->content = SNDRV_INFO_CONTENT_TEXT;
1215 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1216 entry->c.text.read = snd_mixer_oss_proc_read;
1217 entry->c.text.write = snd_mixer_oss_proc_write;
1218 entry->private_data = mixer;
1219 if (snd_info_register(entry) < 0) {
1220 snd_info_free_entry(entry);
1221 entry = NULL;
1222 }
1223 mixer->proc_entry = entry;
1224 }
1225
1226 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1227 {
1228 snd_info_free_entry(mixer->proc_entry);
1229 mixer->proc_entry = NULL;
1230 }
1231 #else /* !CONFIG_PROC_FS */
1232 #define snd_mixer_oss_proc_init(mix)
1233 #define snd_mixer_oss_proc_done(mix)
1234 #endif /* CONFIG_PROC_FS */
1235
1236 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1237 {
1238 static struct snd_mixer_oss_assign_table table[] = {
1239 { SOUND_MIXER_VOLUME, "Master", 0 },
1240 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1241 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1242 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1243 { SOUND_MIXER_SYNTH, "Synth", 0 },
1244 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1245 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1246 { SOUND_MIXER_PCM, "PCM", 0 },
1247 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1248 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1249 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1250 { SOUND_MIXER_LINE, "Line", 0 },
1251 { SOUND_MIXER_MIC, "Mic", 0 },
1252 { SOUND_MIXER_CD, "CD", 0 },
1253 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1254 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1255 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1256 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1257 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1258 { SOUND_MIXER_IGAIN, "Capture", 0 },
1259 { SOUND_MIXER_OGAIN, "Playback", 0 },
1260 { SOUND_MIXER_LINE1, "Aux", 0 },
1261 { SOUND_MIXER_LINE2, "Aux", 1 },
1262 { SOUND_MIXER_LINE3, "Aux", 2 },
1263 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1264 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1265 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1266 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1267 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1268 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1269 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1270 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1271 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1272 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1273 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1274 { SOUND_MIXER_VIDEO, "Video", 0 },
1275 { SOUND_MIXER_RADIO, "Radio", 0 },
1276 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1277 };
1278 unsigned int idx;
1279
1280 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1281 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1282 if (mixer->mask_recsrc) {
1283 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1284 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1285 }
1286 }
1287
1288 /*
1289 *
1290 */
1291
1292 static int snd_mixer_oss_free1(void *private)
1293 {
1294 struct snd_mixer_oss *mixer = private;
1295 struct snd_card *card;
1296 int idx;
1297
1298 if (!mixer)
1299 return 0;
1300 card = mixer->card;
1301 if (snd_BUG_ON(mixer != card->mixer_oss))
1302 return -ENXIO;
1303 card->mixer_oss = NULL;
1304 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1305 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1306 if (chn->private_free)
1307 chn->private_free(chn);
1308 }
1309 kfree(mixer);
1310 return 0;
1311 }
1312
1313 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1314 {
1315 struct snd_mixer_oss *mixer;
1316
1317 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1318 char name[128];
1319 int idx, err;
1320
1321 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1322 if (mixer == NULL)
1323 return -ENOMEM;
1324 mutex_init(&mixer->reg_mutex);
1325 sprintf(name, "mixer%i%i", card->number, 0);
1326 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1327 card, 0,
1328 &snd_mixer_oss_f_ops, card,
1329 name)) < 0) {
1330 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1331 card->number, 0);
1332 kfree(mixer);
1333 return err;
1334 }
1335 mixer->oss_dev_alloc = 1;
1336 mixer->card = card;
1337 if (*card->mixername)
1338 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1339 else
1340 strlcpy(mixer->name, name, sizeof(mixer->name));
1341 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1342 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1343 card->number,
1344 mixer->name);
1345 #endif
1346 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1347 mixer->slots[idx].number = idx;
1348 card->mixer_oss = mixer;
1349 snd_mixer_oss_build(mixer);
1350 snd_mixer_oss_proc_init(mixer);
1351 } else {
1352 mixer = card->mixer_oss;
1353 if (mixer == NULL)
1354 return 0;
1355 if (mixer->oss_dev_alloc) {
1356 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1357 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1358 #endif
1359 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1360 mixer->oss_dev_alloc = 0;
1361 }
1362 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1363 return 0;
1364 snd_mixer_oss_proc_done(mixer);
1365 return snd_mixer_oss_free1(mixer);
1366 }
1367 return 0;
1368 }
1369
1370 static int __init alsa_mixer_oss_init(void)
1371 {
1372 int idx;
1373
1374 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1375 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1376 if (snd_cards[idx])
1377 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1378 }
1379 return 0;
1380 }
1381
1382 static void __exit alsa_mixer_oss_exit(void)
1383 {
1384 int idx;
1385
1386 snd_mixer_oss_notify_callback = NULL;
1387 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1388 if (snd_cards[idx])
1389 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1390 }
1391 }
1392
1393 module_init(alsa_mixer_oss_init)
1394 module_exit(alsa_mixer_oss_exit)
1395
1396 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
Tomato firmware and modifications.