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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
[wrt350n-kernel.git] / sound / core / oss / mixer_oss.c
blob75daed298a15a251fcf3a4af20b4651b905326ea
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 snd_assert(left >= 0 && left <= 100, return -EIO);
261 snd_assert(right >= 0 && right <= 100, return -EIO);
262 if (result >= 0) {
263 pslot->volume[0] = left;
264 pslot->volume[1] = right;
265 result = (left & 0xff) | ((right & 0xff) << 8);
266 }
267 return result;
268 }
269
270 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
271 int slot, int volume)
272 {
273 struct snd_mixer_oss *mixer = fmixer->mixer;
274 struct snd_mixer_oss_slot *pslot;
275 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
276
277 if (mixer == NULL || slot > 30)
278 return -EIO;
279 pslot = &mixer->slots[slot];
280 if (left > 100)
281 left = 100;
282 if (right > 100)
283 right = 100;
284 if (!pslot->stereo)
285 right = left;
286 if (pslot->put_volume)
287 result = pslot->put_volume(fmixer, pslot, left, right);
288 if (result < 0)
289 return result;
290 pslot->volume[0] = left;
291 pslot->volume[1] = right;
292 return (left & 0xff) | ((right & 0xff) << 8);
293 }
294
295 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
296 {
297 void __user *argp = (void __user *)arg;
298 int __user *p = argp;
299 int tmp;
300
301 snd_assert(fmixer != NULL, return -ENXIO);
302 if (((cmd >> 8) & 0xff) == 'M') {
303 switch (cmd) {
304 case SOUND_MIXER_INFO:
305 return snd_mixer_oss_info(fmixer, argp);
306 case SOUND_OLD_MIXER_INFO:
307 return snd_mixer_oss_info_obsolete(fmixer, argp);
308 case SOUND_MIXER_WRITE_RECSRC:
309 if (get_user(tmp, p))
310 return -EFAULT;
311 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
312 if (tmp < 0)
313 return tmp;
314 return put_user(tmp, p);
315 case OSS_GETVERSION:
316 return put_user(SNDRV_OSS_VERSION, p);
317 case OSS_ALSAEMULVER:
318 return put_user(1, p);
319 case SOUND_MIXER_READ_DEVMASK:
320 tmp = snd_mixer_oss_devmask(fmixer);
321 if (tmp < 0)
322 return tmp;
323 return put_user(tmp, p);
324 case SOUND_MIXER_READ_STEREODEVS:
325 tmp = snd_mixer_oss_stereodevs(fmixer);
326 if (tmp < 0)
327 return tmp;
328 return put_user(tmp, p);
329 case SOUND_MIXER_READ_RECMASK:
330 tmp = snd_mixer_oss_recmask(fmixer);
331 if (tmp < 0)
332 return tmp;
333 return put_user(tmp, p);
334 case SOUND_MIXER_READ_CAPS:
335 tmp = snd_mixer_oss_caps(fmixer);
336 if (tmp < 0)
337 return tmp;
338 return put_user(tmp, p);
339 case SOUND_MIXER_READ_RECSRC:
340 tmp = snd_mixer_oss_get_recsrc(fmixer);
341 if (tmp < 0)
342 return tmp;
343 return put_user(tmp, p);
344 }
345 }
346 if (cmd & SIOC_IN) {
347 if (get_user(tmp, p))
348 return -EFAULT;
349 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
350 if (tmp < 0)
351 return tmp;
352 return put_user(tmp, p);
353 } else if (cmd & SIOC_OUT) {
354 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
355 if (tmp < 0)
356 return tmp;
357 return put_user(tmp, p);
358 }
359 return -ENXIO;
360 }
361
362 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
363 {
364 return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
365 }
366
367 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
368 {
369 struct snd_mixer_oss_file fmixer;
370
371 snd_assert(card != NULL, return -ENXIO);
372 if (card->mixer_oss == NULL)
373 return -ENXIO;
374 memset(&fmixer, 0, sizeof(fmixer));
375 fmixer.card = card;
376 fmixer.mixer = card->mixer_oss;
377 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
378 }
379
380 #ifdef CONFIG_COMPAT
381 /* all compatible */
382 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
383 #else
384 #define snd_mixer_oss_ioctl_compat NULL
385 #endif
386
387 /*
388 * REGISTRATION PART
389 */
390
391 static const struct file_operations snd_mixer_oss_f_ops =
392 {
393 .owner = THIS_MODULE,
394 .open = snd_mixer_oss_open,
395 .release = snd_mixer_oss_release,
396 .unlocked_ioctl = snd_mixer_oss_ioctl,
397 .compat_ioctl = snd_mixer_oss_ioctl_compat,
398 };
399
400 /*
401 * utilities
402 */
403
404 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
405 {
406 long orange = omax - omin, nrange = nmax - nmin;
407
408 if (orange == 0)
409 return 0;
410 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
411 }
412
413 /* convert from alsa native to oss values (0-100) */
414 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
415 {
416 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
417 return *old;
418 return snd_mixer_oss_conv(val, min, max, 0, 100);
419 }
420
421 /* convert from oss to alsa native values */
422 static long snd_mixer_oss_conv2(long val, long min, long max)
423 {
424 return snd_mixer_oss_conv(val, 0, 100, min, max);
425 }
426
427 #if 0
428 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
429 {
430 struct snd_mixer_oss *mixer = card->mixer_oss;
431 if (mixer)
432 mixer->mask_recsrc |= 1 << slot;
433 }
434
435 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
436 {
437 struct snd_mixer_oss *mixer = card->mixer_oss;
438 if (mixer && (mixer->mask_recsrc & (1 << slot)))
439 return 1;
440 return 0;
441 }
442 #endif
443
444 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
445
446 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
447 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
448 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
449 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
450 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
451 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
452 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
453 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
454 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
455 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
456 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
457
458 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
459
460 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
461 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
462 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
463 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
464 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
465 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
466 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
467 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
468 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
469 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
470 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
471
472 struct slot {
473 unsigned int signature;
474 unsigned int present;
475 unsigned int channels;
476 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
477 unsigned int capture_item;
478 struct snd_mixer_oss_assign_table *assigned;
479 unsigned int allocated: 1;
480 };
481
482 #define ID_UNKNOWN ((unsigned int)-1)
483
484 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
485 {
486 struct snd_card *card = mixer->card;
487 struct snd_ctl_elem_id id;
488
489 memset(&id, 0, sizeof(id));
490 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
491 strcpy(id.name, name);
492 id.index = index;
493 return snd_ctl_find_id(card, &id);
494 }
495
496 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
497 struct snd_mixer_oss_slot *pslot,
498 unsigned int numid,
499 int *left, int *right)
500 {
501 struct snd_ctl_elem_info *uinfo;
502 struct snd_ctl_elem_value *uctl;
503 struct snd_kcontrol *kctl;
504 struct snd_card *card = fmixer->card;
505
506 if (numid == ID_UNKNOWN)
507 return;
508 down_read(&card->controls_rwsem);
509 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
510 up_read(&card->controls_rwsem);
511 return;
512 }
513 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
514 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
515 if (uinfo == NULL || uctl == NULL)
516 goto __unalloc;
517 if (kctl->info(kctl, uinfo))
518 goto __unalloc;
519 if (kctl->get(kctl, uctl))
520 goto __unalloc;
521 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
522 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
523 goto __unalloc;
524 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
525 if (uinfo->count > 1)
526 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
527 __unalloc:
528 up_read(&card->controls_rwsem);
529 kfree(uctl);
530 kfree(uinfo);
531 }
532
533 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
534 struct snd_mixer_oss_slot *pslot,
535 unsigned int numid,
536 int *left, int *right,
537 int route)
538 {
539 struct snd_ctl_elem_info *uinfo;
540 struct snd_ctl_elem_value *uctl;
541 struct snd_kcontrol *kctl;
542 struct snd_card *card = fmixer->card;
543
544 if (numid == ID_UNKNOWN)
545 return;
546 down_read(&card->controls_rwsem);
547 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
548 up_read(&card->controls_rwsem);
549 return;
550 }
551 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
552 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
553 if (uinfo == NULL || uctl == NULL)
554 goto __unalloc;
555 if (kctl->info(kctl, uinfo))
556 goto __unalloc;
557 if (kctl->get(kctl, uctl))
558 goto __unalloc;
559 if (!uctl->value.integer.value[0]) {
560 *left = 0;
561 if (uinfo->count == 1)
562 *right = 0;
563 }
564 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
565 *right = 0;
566 __unalloc:
567 up_read(&card->controls_rwsem);
568 kfree(uctl);
569 kfree(uinfo);
570 }
571
572 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
573 struct snd_mixer_oss_slot *pslot,
574 int *left, int *right)
575 {
576 struct slot *slot = (struct slot *)pslot->private_data;
577
578 *left = *right = 100;
579 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
580 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
581 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
582 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
583 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
584 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
585 }
586 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
587 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
588 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
589 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
590 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
591 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
593 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
594 }
595 return 0;
596 }
597
598 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
599 struct snd_mixer_oss_slot *pslot,
600 unsigned int numid,
601 int left, int right)
602 {
603 struct snd_ctl_elem_info *uinfo;
604 struct snd_ctl_elem_value *uctl;
605 struct snd_kcontrol *kctl;
606 struct snd_card *card = fmixer->card;
607 int res;
608
609 if (numid == ID_UNKNOWN)
610 return;
611 down_read(&card->controls_rwsem);
612 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
613 return;
614 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
615 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
616 if (uinfo == NULL || uctl == NULL)
617 goto __unalloc;
618 if (kctl->info(kctl, uinfo))
619 goto __unalloc;
620 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
621 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
622 goto __unalloc;
623 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
624 if (uinfo->count > 1)
625 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
626 if ((res = kctl->put(kctl, uctl)) < 0)
627 goto __unalloc;
628 if (res > 0)
629 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
630 __unalloc:
631 up_read(&card->controls_rwsem);
632 kfree(uctl);
633 kfree(uinfo);
634 }
635
636 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
637 struct snd_mixer_oss_slot *pslot,
638 unsigned int numid,
639 int left, int right,
640 int route)
641 {
642 struct snd_ctl_elem_info *uinfo;
643 struct snd_ctl_elem_value *uctl;
644 struct snd_kcontrol *kctl;
645 struct snd_card *card = fmixer->card;
646 int res;
647
648 if (numid == ID_UNKNOWN)
649 return;
650 down_read(&card->controls_rwsem);
651 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
652 up_read(&fmixer->card->controls_rwsem);
653 return;
654 }
655 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
656 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
657 if (uinfo == NULL || uctl == NULL)
658 goto __unalloc;
659 if (kctl->info(kctl, uinfo))
660 goto __unalloc;
661 if (uinfo->count > 1) {
662 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
663 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
664 if (route) {
665 uctl->value.integer.value[1] =
666 uctl->value.integer.value[2] = 0;
667 }
668 } else {
669 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
670 }
671 if ((res = kctl->put(kctl, uctl)) < 0)
672 goto __unalloc;
673 if (res > 0)
674 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
675 __unalloc:
676 up_read(&card->controls_rwsem);
677 kfree(uctl);
678 kfree(uinfo);
679 }
680
681 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
682 struct snd_mixer_oss_slot *pslot,
683 int left, int right)
684 {
685 struct slot *slot = (struct slot *)pslot->private_data;
686
687 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
688 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
689 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
690 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
691 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
692 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
693 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
694 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
695 }
696 if (left || right) {
697 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
698 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], 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_GROUTE)
704 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
705 } else {
706 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
707 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
708 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
709 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
710 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
712 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
713 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
714 }
715 }
716 return 0;
717 }
718
719 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
720 struct snd_mixer_oss_slot *pslot,
721 int *active)
722 {
723 struct slot *slot = (struct slot *)pslot->private_data;
724 int left, right;
725
726 left = right = 1;
727 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
728 *active = (left || right) ? 1 : 0;
729 return 0;
730 }
731
732 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
733 struct snd_mixer_oss_slot *pslot,
734 int *active)
735 {
736 struct slot *slot = (struct slot *)pslot->private_data;
737 int left, right;
738
739 left = right = 1;
740 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
741 *active = (left || right) ? 1 : 0;
742 return 0;
743 }
744
745 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
746 struct snd_mixer_oss_slot *pslot,
747 int active)
748 {
749 struct slot *slot = (struct slot *)pslot->private_data;
750
751 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
752 return 0;
753 }
754
755 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
756 struct snd_mixer_oss_slot *pslot,
757 int active)
758 {
759 struct slot *slot = (struct slot *)pslot->private_data;
760
761 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
762 return 0;
763 }
764
765 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
766 {
767 struct snd_card *card = fmixer->card;
768 struct snd_mixer_oss *mixer = fmixer->mixer;
769 struct snd_kcontrol *kctl;
770 struct snd_mixer_oss_slot *pslot;
771 struct slot *slot;
772 struct snd_ctl_elem_info *uinfo;
773 struct snd_ctl_elem_value *uctl;
774 int err, idx;
775
776 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
777 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
778 if (uinfo == NULL || uctl == NULL) {
779 err = -ENOMEM;
780 goto __unlock;
781 }
782 down_read(&card->controls_rwsem);
783 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
784 if (! kctl) {
785 err = -ENOENT;
786 goto __unlock;
787 }
788 if ((err = kctl->info(kctl, uinfo)) < 0)
789 goto __unlock;
790 if ((err = kctl->get(kctl, uctl)) < 0)
791 goto __unlock;
792 for (idx = 0; idx < 32; idx++) {
793 if (!(mixer->mask_recsrc & (1 << idx)))
794 continue;
795 pslot = &mixer->slots[idx];
796 slot = (struct slot *)pslot->private_data;
797 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
798 continue;
799 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
800 continue;
801 if (slot->capture_item == uctl->value.enumerated.item[0]) {
802 *active_index = idx;
803 break;
804 }
805 }
806 err = 0;
807 __unlock:
808 up_read(&card->controls_rwsem);
809 kfree(uctl);
810 kfree(uinfo);
811 return err;
812 }
813
814 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
815 {
816 struct snd_card *card = fmixer->card;
817 struct snd_mixer_oss *mixer = fmixer->mixer;
818 struct snd_kcontrol *kctl;
819 struct snd_mixer_oss_slot *pslot;
820 struct slot *slot = NULL;
821 struct snd_ctl_elem_info *uinfo;
822 struct snd_ctl_elem_value *uctl;
823 int err;
824 unsigned int idx;
825
826 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
827 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
828 if (uinfo == NULL || uctl == NULL) {
829 err = -ENOMEM;
830 goto __unlock;
831 }
832 down_read(&card->controls_rwsem);
833 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
834 if (! kctl) {
835 err = -ENOENT;
836 goto __unlock;
837 }
838 if ((err = kctl->info(kctl, uinfo)) < 0)
839 goto __unlock;
840 for (idx = 0; idx < 32; idx++) {
841 if (!(mixer->mask_recsrc & (1 << idx)))
842 continue;
843 pslot = &mixer->slots[idx];
844 slot = (struct slot *)pslot->private_data;
845 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
846 continue;
847 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
848 continue;
849 if (idx == active_index)
850 break;
851 slot = NULL;
852 }
853 if (! slot)
854 goto __unlock;
855 for (idx = 0; idx < uinfo->count; idx++)
856 uctl->value.enumerated.item[idx] = slot->capture_item;
857 err = kctl->put(kctl, uctl);
858 if (err > 0)
859 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
860 err = 0;
861 __unlock:
862 up_read(&card->controls_rwsem);
863 kfree(uctl);
864 kfree(uinfo);
865 return err;
866 }
867
868 struct snd_mixer_oss_assign_table {
869 int oss_id;
870 const char *name;
871 int index;
872 };
873
874 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
875 {
876 struct snd_ctl_elem_info *info;
877 struct snd_kcontrol *kcontrol;
878 struct snd_card *card = mixer->card;
879 int err;
880
881 down_read(&card->controls_rwsem);
882 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
883 if (kcontrol == NULL) {
884 up_read(&card->controls_rwsem);
885 return 0;
886 }
887 info = kmalloc(sizeof(*info), GFP_KERNEL);
888 if (! info) {
889 up_read(&card->controls_rwsem);
890 return -ENOMEM;
891 }
892 if ((err = kcontrol->info(kcontrol, info)) < 0) {
893 up_read(&card->controls_rwsem);
894 kfree(info);
895 return err;
896 }
897 slot->numid[item] = kcontrol->id.numid;
898 up_read(&card->controls_rwsem);
899 if (info->count > slot->channels)
900 slot->channels = info->count;
901 slot->present |= 1 << item;
902 kfree(info);
903 return 0;
904 }
905
906 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
907 {
908 struct slot *p = (struct slot *)chn->private_data;
909 if (p) {
910 if (p->allocated && p->assigned) {
911 kfree(p->assigned->name);
912 kfree(p->assigned);
913 }
914 kfree(p);
915 }
916 }
917
918 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
919 {
920 int idx = rslot->number; /* remember this */
921 if (rslot->private_free)
922 rslot->private_free(rslot);
923 memset(rslot, 0, sizeof(*rslot));
924 rslot->number = idx;
925 }
926
927 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
928 snd_mixer_oss_build_input! */
929 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
930 struct snd_mixer_oss_assign_table *ptr,
931 struct slot *slot)
932 {
933 char str[64];
934 int err;
935
936 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
937 SNDRV_MIXER_OSS_ITEM_GLOBAL);
938 if (err)
939 return err;
940 sprintf(str, "%s Switch", ptr->name);
941 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
942 SNDRV_MIXER_OSS_ITEM_GSWITCH);
943 if (err)
944 return err;
945 sprintf(str, "%s Route", ptr->name);
946 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
947 SNDRV_MIXER_OSS_ITEM_GROUTE);
948 if (err)
949 return err;
950 sprintf(str, "%s Volume", ptr->name);
951 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
952 SNDRV_MIXER_OSS_ITEM_GVOLUME);
953 if (err)
954 return err;
955 sprintf(str, "%s Playback Switch", ptr->name);
956 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
957 SNDRV_MIXER_OSS_ITEM_PSWITCH);
958 if (err)
959 return err;
960 sprintf(str, "%s Playback Route", ptr->name);
961 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
962 SNDRV_MIXER_OSS_ITEM_PROUTE);
963 if (err)
964 return err;
965 sprintf(str, "%s Playback Volume", ptr->name);
966 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
967 SNDRV_MIXER_OSS_ITEM_PVOLUME);
968 if (err)
969 return err;
970 sprintf(str, "%s Capture Switch", ptr->name);
971 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
972 SNDRV_MIXER_OSS_ITEM_CSWITCH);
973 if (err)
974 return err;
975 sprintf(str, "%s Capture Route", ptr->name);
976 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
977 SNDRV_MIXER_OSS_ITEM_CROUTE);
978 if (err)
979 return err;
980 sprintf(str, "%s Capture Volume", ptr->name);
981 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
982 SNDRV_MIXER_OSS_ITEM_CVOLUME);
983 if (err)
984 return err;
985
986 return 0;
987 }
988
989 /*
990 * build an OSS mixer element.
991 * ptr_allocated means the entry is dynamically allocated (change via proc file).
992 * when replace_old = 1, the old entry is replaced with the new one.
993 */
994 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)
995 {
996 struct slot slot;
997 struct slot *pslot;
998 struct snd_kcontrol *kctl;
999 struct snd_mixer_oss_slot *rslot;
1000 char str[64];
1001
1002 /* check if already assigned */
1003 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1004 return 0;
1005
1006 memset(&slot, 0, sizeof(slot));
1007 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1008 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1009 return 0;
1010 down_read(&mixer->card->controls_rwsem);
1011 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1012 struct snd_ctl_elem_info *uinfo;
1013
1014 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1015 if (! uinfo) {
1016 up_read(&mixer->card->controls_rwsem);
1017 return -ENOMEM;
1018 }
1019
1020 if (kctl->info(kctl, uinfo)) {
1021 up_read(&mixer->card->controls_rwsem);
1022 return 0;
1023 }
1024 strcpy(str, ptr->name);
1025 if (!strcmp(str, "Master"))
1026 strcpy(str, "Mix");
1027 if (!strcmp(str, "Master Mono"))
1028 strcpy(str, "Mix Mono");
1029 slot.capture_item = 0;
1030 if (!strcmp(uinfo->value.enumerated.name, str)) {
1031 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1032 } else {
1033 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1034 uinfo->value.enumerated.item = slot.capture_item;
1035 if (kctl->info(kctl, uinfo)) {
1036 up_read(&mixer->card->controls_rwsem);
1037 return 0;
1038 }
1039 if (!strcmp(uinfo->value.enumerated.name, str)) {
1040 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1041 break;
1042 }
1043 }
1044 }
1045 kfree(uinfo);
1046 }
1047 up_read(&mixer->card->controls_rwsem);
1048 if (slot.present != 0) {
1049 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1050 if (! pslot)
1051 return -ENOMEM;
1052 *pslot = slot;
1053 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1054 pslot->assigned = ptr;
1055 pslot->allocated = ptr_allocated;
1056 rslot = &mixer->slots[ptr->oss_id];
1057 mixer_slot_clear(rslot);
1058 rslot->stereo = slot.channels > 1 ? 1 : 0;
1059 rslot->get_volume = snd_mixer_oss_get_volume1;
1060 rslot->put_volume = snd_mixer_oss_put_volume1;
1061 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1062 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1063 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1064 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1065 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1066 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1067 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1068 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1069 mixer->mask_recsrc |= 1 << ptr->oss_id;
1070 }
1071 rslot->private_data = pslot;
1072 rslot->private_free = snd_mixer_oss_slot_free;
1073 return 1;
1074 }
1075 return 0;
1076 }
1077
1078 #ifdef CONFIG_PROC_FS
1079 /*
1080 */
1081 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1082 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1083 MIXER_VOL(VOLUME),
1084 MIXER_VOL(BASS),
1085 MIXER_VOL(TREBLE),
1086 MIXER_VOL(SYNTH),
1087 MIXER_VOL(PCM),
1088 MIXER_VOL(SPEAKER),
1089 MIXER_VOL(LINE),
1090 MIXER_VOL(MIC),
1091 MIXER_VOL(CD),
1092 MIXER_VOL(IMIX),
1093 MIXER_VOL(ALTPCM),
1094 MIXER_VOL(RECLEV),
1095 MIXER_VOL(IGAIN),
1096 MIXER_VOL(OGAIN),
1097 MIXER_VOL(LINE1),
1098 MIXER_VOL(LINE2),
1099 MIXER_VOL(LINE3),
1100 MIXER_VOL(DIGITAL1),
1101 MIXER_VOL(DIGITAL2),
1102 MIXER_VOL(DIGITAL3),
1103 MIXER_VOL(PHONEIN),
1104 MIXER_VOL(PHONEOUT),
1105 MIXER_VOL(VIDEO),
1106 MIXER_VOL(RADIO),
1107 MIXER_VOL(MONITOR),
1108 };
1109
1110 /*
1111 * /proc interface
1112 */
1113
1114 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1115 struct snd_info_buffer *buffer)
1116 {
1117 struct snd_mixer_oss *mixer = entry->private_data;
1118 int i;
1119
1120 mutex_lock(&mixer->reg_mutex);
1121 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1122 struct slot *p;
1123
1124 if (! oss_mixer_names[i])
1125 continue;
1126 p = (struct slot *)mixer->slots[i].private_data;
1127 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1128 if (p && p->assigned)
1129 snd_iprintf(buffer, "\"%s\" %d\n",
1130 p->assigned->name,
1131 p->assigned->index);
1132 else
1133 snd_iprintf(buffer, "\"\" 0\n");
1134 }
1135 mutex_unlock(&mixer->reg_mutex);
1136 }
1137
1138 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1139 struct snd_info_buffer *buffer)
1140 {
1141 struct snd_mixer_oss *mixer = entry->private_data;
1142 char line[128], str[32], idxstr[16], *cptr;
1143 int ch, idx;
1144 struct snd_mixer_oss_assign_table *tbl;
1145 struct slot *slot;
1146
1147 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1148 cptr = snd_info_get_str(str, line, sizeof(str));
1149 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1150 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1151 break;
1152 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1153 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1154 continue;
1155 }
1156 cptr = snd_info_get_str(str, cptr, sizeof(str));
1157 if (! *str) {
1158 /* remove the entry */
1159 mutex_lock(&mixer->reg_mutex);
1160 mixer_slot_clear(&mixer->slots[ch]);
1161 mutex_unlock(&mixer->reg_mutex);
1162 continue;
1163 }
1164 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1165 idx = simple_strtoul(idxstr, NULL, 10);
1166 if (idx >= 0x4000) { /* too big */
1167 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1168 continue;
1169 }
1170 mutex_lock(&mixer->reg_mutex);
1171 slot = (struct slot *)mixer->slots[ch].private_data;
1172 if (slot && slot->assigned &&
1173 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1174 /* not changed */
1175 goto __unlock;
1176 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1177 if (! tbl) {
1178 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1179 goto __unlock;
1180 }
1181 tbl->oss_id = ch;
1182 tbl->name = kstrdup(str, GFP_KERNEL);
1183 if (! tbl->name) {
1184 kfree(tbl);
1185 goto __unlock;
1186 }
1187 tbl->index = idx;
1188 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1189 kfree(tbl->name);
1190 kfree(tbl);
1191 }
1192 __unlock:
1193 mutex_unlock(&mixer->reg_mutex);
1194 }
1195 }
1196
1197 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1198 {
1199 struct snd_info_entry *entry;
1200
1201 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1202 mixer->card->proc_root);
1203 if (! entry)
1204 return;
1205 entry->content = SNDRV_INFO_CONTENT_TEXT;
1206 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1207 entry->c.text.read = snd_mixer_oss_proc_read;
1208 entry->c.text.write = snd_mixer_oss_proc_write;
1209 entry->private_data = mixer;
1210 if (snd_info_register(entry) < 0) {
1211 snd_info_free_entry(entry);
1212 entry = NULL;
1213 }
1214 mixer->proc_entry = entry;
1215 }
1216
1217 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1218 {
1219 snd_info_free_entry(mixer->proc_entry);
1220 mixer->proc_entry = NULL;
1221 }
1222 #else /* !CONFIG_PROC_FS */
1223 #define snd_mixer_oss_proc_init(mix)
1224 #define snd_mixer_oss_proc_done(mix)
1225 #endif /* CONFIG_PROC_FS */
1226
1227 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1228 {
1229 static struct snd_mixer_oss_assign_table table[] = {
1230 { SOUND_MIXER_VOLUME, "Master", 0 },
1231 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1232 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1233 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1234 { SOUND_MIXER_SYNTH, "Synth", 0 },
1235 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1236 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1237 { SOUND_MIXER_PCM, "PCM", 0 },
1238 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
1239 { SOUND_MIXER_LINE, "Line", 0 },
1240 { SOUND_MIXER_MIC, "Mic", 0 },
1241 { SOUND_MIXER_CD, "CD", 0 },
1242 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1243 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1244 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1245 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1246 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1247 { SOUND_MIXER_IGAIN, "Capture", 0 },
1248 { SOUND_MIXER_OGAIN, "Playback", 0 },
1249 { SOUND_MIXER_LINE1, "Aux", 0 },
1250 { SOUND_MIXER_LINE2, "Aux", 1 },
1251 { SOUND_MIXER_LINE3, "Aux", 2 },
1252 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1253 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1254 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1255 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1256 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1257 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1258 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1259 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1260 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1261 { SOUND_MIXER_VIDEO, "Video", 0 },
1262 { SOUND_MIXER_RADIO, "Radio", 0 },
1263 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1264 };
1265 unsigned int idx;
1266
1267 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1268 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1269 if (mixer->mask_recsrc) {
1270 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1271 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1272 }
1273 }
1274
1275 /*
1276 *
1277 */
1278
1279 static int snd_mixer_oss_free1(void *private)
1280 {
1281 struct snd_mixer_oss *mixer = private;
1282 struct snd_card *card;
1283 int idx;
1284
1285 snd_assert(mixer != NULL, return -ENXIO);
1286 card = mixer->card;
1287 snd_assert(mixer == card->mixer_oss, return -ENXIO);
1288 card->mixer_oss = NULL;
1289 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1290 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1291 if (chn->private_free)
1292 chn->private_free(chn);
1293 }
1294 kfree(mixer);
1295 return 0;
1296 }
1297
1298 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1299 {
1300 struct snd_mixer_oss *mixer;
1301
1302 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1303 char name[128];
1304 int idx, err;
1305
1306 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1307 if (mixer == NULL)
1308 return -ENOMEM;
1309 mutex_init(&mixer->reg_mutex);
1310 sprintf(name, "mixer%i%i", card->number, 0);
1311 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1312 card, 0,
1313 &snd_mixer_oss_f_ops, card,
1314 name)) < 0) {
1315 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1316 card->number, 0);
1317 kfree(mixer);
1318 return err;
1319 }
1320 mixer->oss_dev_alloc = 1;
1321 mixer->card = card;
1322 if (*card->mixername)
1323 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1324 else
1325 strlcpy(mixer->name, name, sizeof(mixer->name));
1326 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1327 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1328 card->number,
1329 mixer->name);
1330 #endif
1331 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1332 mixer->slots[idx].number = idx;
1333 card->mixer_oss = mixer;
1334 snd_mixer_oss_build(mixer);
1335 snd_mixer_oss_proc_init(mixer);
1336 } else {
1337 mixer = card->mixer_oss;
1338 if (mixer == NULL)
1339 return 0;
1340 if (mixer->oss_dev_alloc) {
1341 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1342 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1343 #endif
1344 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1345 mixer->oss_dev_alloc = 0;
1346 }
1347 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1348 return 0;
1349 snd_mixer_oss_proc_done(mixer);
1350 return snd_mixer_oss_free1(mixer);
1351 }
1352 return 0;
1353 }
1354
1355 static int __init alsa_mixer_oss_init(void)
1356 {
1357 int idx;
1358
1359 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1360 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1361 if (snd_cards[idx])
1362 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1363 }
1364 return 0;
1365 }
1366
1367 static void __exit alsa_mixer_oss_exit(void)
1368 {
1369 int idx;
1370
1371 snd_mixer_oss_notify_callback = NULL;
1372 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1373 if (snd_cards[idx])
1374 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1375 }
1376 }
1377
1378 module_init(alsa_mixer_oss_init)
1379 module_exit(alsa_mixer_oss_exit)
1380
1381 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
WRT350N Kernel Patches