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[ALSA] dynamic minors (3/6): store device-specific object pointers dynamically
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / sound / core / oss / mixer_oss.c
1 /*
2 * OSS emulation layer for the mixer interface
3 * Copyright (c) by Jaroslav Kysela <perex@suse.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 <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/smp_lock.h>
25 #include <linux/slab.h>
26 #include <linux/time.h>
27 #include <linux/string.h>
28 #include <sound/core.h>
29 #include <sound/minors.h>
30 #include <sound/control.h>
31 #include <sound/info.h>
32 #include <sound/mixer_oss.h>
33 #include <linux/soundcard.h>
34
35 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
36
37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
39 MODULE_LICENSE("GPL");
40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
41
42 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
43 {
44 struct snd_card *card;
45 struct snd_mixer_oss_file *fmixer;
46 int err;
47
48 card = snd_lookup_oss_minor_data(iminor(inode),
49 SNDRV_OSS_DEVICE_TYPE_MIXER);
50 if (card == NULL)
51 return -ENODEV;
52 if (card->mixer_oss == NULL)
53 return -ENODEV;
54 err = snd_card_file_add(card, file);
55 if (err < 0)
56 return err;
57 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
58 if (fmixer == NULL) {
59 snd_card_file_remove(card, file);
60 return -ENOMEM;
61 }
62 fmixer->card = card;
63 fmixer->mixer = card->mixer_oss;
64 file->private_data = fmixer;
65 if (!try_module_get(card->module)) {
66 kfree(fmixer);
67 snd_card_file_remove(card, file);
68 return -EFAULT;
69 }
70 return 0;
71 }
72
73 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
74 {
75 struct snd_mixer_oss_file *fmixer;
76
77 if (file->private_data) {
78 fmixer = (struct snd_mixer_oss_file *) file->private_data;
79 module_put(fmixer->card->module);
80 snd_card_file_remove(fmixer->card, file);
81 kfree(fmixer);
82 }
83 return 0;
84 }
85
86 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
87 mixer_info __user *_info)
88 {
89 struct snd_card *card = fmixer->card;
90 struct snd_mixer_oss *mixer = fmixer->mixer;
91 struct mixer_info info;
92
93 memset(&info, 0, sizeof(info));
94 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
95 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
96 info.modify_counter = card->mixer_oss_change_count;
97 if (copy_to_user(_info, &info, sizeof(info)))
98 return -EFAULT;
99 return 0;
100 }
101
102 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
103 _old_mixer_info __user *_info)
104 {
105 struct snd_card *card = fmixer->card;
106 struct snd_mixer_oss *mixer = fmixer->mixer;
107 _old_mixer_info info;
108
109 memset(&info, 0, sizeof(info));
110 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
111 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
112 if (copy_to_user(_info, &info, sizeof(info)))
113 return -EFAULT;
114 return 0;
115 }
116
117 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
118 {
119 struct snd_mixer_oss *mixer = fmixer->mixer;
120 int result = 0;
121
122 if (mixer == NULL)
123 return -EIO;
124 if (mixer->get_recsrc && mixer->put_recsrc)
125 result |= SOUND_CAP_EXCL_INPUT;
126 return result;
127 }
128
129 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
130 {
131 struct snd_mixer_oss *mixer = fmixer->mixer;
132 struct snd_mixer_oss_slot *pslot;
133 int result = 0, chn;
134
135 if (mixer == NULL)
136 return -EIO;
137 for (chn = 0; chn < 31; chn++) {
138 pslot = &mixer->slots[chn];
139 if (pslot->put_volume || pslot->put_recsrc)
140 result |= 1 << chn;
141 }
142 return result;
143 }
144
145 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
146 {
147 struct snd_mixer_oss *mixer = fmixer->mixer;
148 struct snd_mixer_oss_slot *pslot;
149 int result = 0, chn;
150
151 if (mixer == NULL)
152 return -EIO;
153 for (chn = 0; chn < 31; chn++) {
154 pslot = &mixer->slots[chn];
155 if (pslot->put_volume && pslot->stereo)
156 result |= 1 << chn;
157 }
158 return result;
159 }
160
161 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
162 {
163 struct snd_mixer_oss *mixer = fmixer->mixer;
164 int result = 0;
165
166 if (mixer == NULL)
167 return -EIO;
168 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
169 result = mixer->mask_recsrc;
170 } else {
171 struct snd_mixer_oss_slot *pslot;
172 int chn;
173 for (chn = 0; chn < 31; chn++) {
174 pslot = &mixer->slots[chn];
175 if (pslot->put_recsrc)
176 result |= 1 << chn;
177 }
178 }
179 return result;
180 }
181
182 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
183 {
184 struct snd_mixer_oss *mixer = fmixer->mixer;
185 int result = 0;
186
187 if (mixer == NULL)
188 return -EIO;
189 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
190 int err;
191 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
192 return err;
193 result = 1 << result;
194 } else {
195 struct snd_mixer_oss_slot *pslot;
196 int chn;
197 for (chn = 0; chn < 31; chn++) {
198 pslot = &mixer->slots[chn];
199 if (pslot->get_recsrc) {
200 int active = 0;
201 pslot->get_recsrc(fmixer, pslot, &active);
202 if (active)
203 result |= 1 << chn;
204 }
205 }
206 }
207 return mixer->oss_recsrc = result;
208 }
209
210 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
211 {
212 struct snd_mixer_oss *mixer = fmixer->mixer;
213 struct snd_mixer_oss_slot *pslot;
214 int chn, active;
215 int result = 0;
216
217 if (mixer == NULL)
218 return -EIO;
219 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
220 if (recsrc & ~mixer->oss_recsrc)
221 recsrc &= ~mixer->oss_recsrc;
222 mixer->put_recsrc(fmixer, ffz(~recsrc));
223 mixer->get_recsrc(fmixer, &result);
224 result = 1 << result;
225 }
226 for (chn = 0; chn < 31; chn++) {
227 pslot = &mixer->slots[chn];
228 if (pslot->put_recsrc) {
229 active = (recsrc & (1 << chn)) ? 1 : 0;
230 pslot->put_recsrc(fmixer, pslot, active);
231 }
232 }
233 if (! result) {
234 for (chn = 0; chn < 31; chn++) {
235 pslot = &mixer->slots[chn];
236 if (pslot->get_recsrc) {
237 active = 0;
238 pslot->get_recsrc(fmixer, pslot, &active);
239 if (active)
240 result |= 1 << chn;
241 }
242 }
243 }
244 return result;
245 }
246
247 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
248 {
249 struct snd_mixer_oss *mixer = fmixer->mixer;
250 struct snd_mixer_oss_slot *pslot;
251 int result = 0, left, right;
252
253 if (mixer == NULL || slot > 30)
254 return -EIO;
255 pslot = &mixer->slots[slot];
256 left = pslot->volume[0];
257 right = pslot->volume[1];
258 if (pslot->get_volume)
259 result = pslot->get_volume(fmixer, pslot, &left, &right);
260 if (!pslot->stereo)
261 right = left;
262 snd_assert(left >= 0 && left <= 100, return -EIO);
263 snd_assert(right >= 0 && right <= 100, return -EIO);
264 if (result >= 0) {
265 pslot->volume[0] = left;
266 pslot->volume[1] = right;
267 result = (left & 0xff) | ((right & 0xff) << 8);
268 }
269 return result;
270 }
271
272 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
273 int slot, int volume)
274 {
275 struct snd_mixer_oss *mixer = fmixer->mixer;
276 struct snd_mixer_oss_slot *pslot;
277 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
278
279 if (mixer == NULL || slot > 30)
280 return -EIO;
281 pslot = &mixer->slots[slot];
282 if (left > 100)
283 left = 100;
284 if (right > 100)
285 right = 100;
286 if (!pslot->stereo)
287 right = left;
288 if (pslot->put_volume)
289 result = pslot->put_volume(fmixer, pslot, left, right);
290 if (result < 0)
291 return result;
292 pslot->volume[0] = left;
293 pslot->volume[1] = right;
294 return (left & 0xff) | ((right & 0xff) << 8);
295 }
296
297 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
298 {
299 void __user *argp = (void __user *)arg;
300 int __user *p = argp;
301 int tmp;
302
303 snd_assert(fmixer != NULL, return -ENXIO);
304 if (((cmd >> 8) & 0xff) == 'M') {
305 switch (cmd) {
306 case SOUND_MIXER_INFO:
307 return snd_mixer_oss_info(fmixer, argp);
308 case SOUND_OLD_MIXER_INFO:
309 return snd_mixer_oss_info_obsolete(fmixer, argp);
310 case SOUND_MIXER_WRITE_RECSRC:
311 if (get_user(tmp, p))
312 return -EFAULT;
313 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
314 if (tmp < 0)
315 return tmp;
316 return put_user(tmp, p);
317 case OSS_GETVERSION:
318 return put_user(SNDRV_OSS_VERSION, p);
319 case OSS_ALSAEMULVER:
320 return put_user(1, p);
321 case SOUND_MIXER_READ_DEVMASK:
322 tmp = snd_mixer_oss_devmask(fmixer);
323 if (tmp < 0)
324 return tmp;
325 return put_user(tmp, p);
326 case SOUND_MIXER_READ_STEREODEVS:
327 tmp = snd_mixer_oss_stereodevs(fmixer);
328 if (tmp < 0)
329 return tmp;
330 return put_user(tmp, p);
331 case SOUND_MIXER_READ_RECMASK:
332 tmp = snd_mixer_oss_recmask(fmixer);
333 if (tmp < 0)
334 return tmp;
335 return put_user(tmp, p);
336 case SOUND_MIXER_READ_CAPS:
337 tmp = snd_mixer_oss_caps(fmixer);
338 if (tmp < 0)
339 return tmp;
340 return put_user(tmp, p);
341 case SOUND_MIXER_READ_RECSRC:
342 tmp = snd_mixer_oss_get_recsrc(fmixer);
343 if (tmp < 0)
344 return tmp;
345 return put_user(tmp, p);
346 }
347 }
348 if (cmd & SIOC_IN) {
349 if (get_user(tmp, p))
350 return -EFAULT;
351 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
352 if (tmp < 0)
353 return tmp;
354 return put_user(tmp, p);
355 } else if (cmd & SIOC_OUT) {
356 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
357 if (tmp < 0)
358 return tmp;
359 return put_user(tmp, p);
360 }
361 return -ENXIO;
362 }
363
364 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
365 {
366 return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
367 }
368
369 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
370 {
371 struct snd_mixer_oss_file fmixer;
372
373 snd_assert(card != NULL, return -ENXIO);
374 if (card->mixer_oss == NULL)
375 return -ENXIO;
376 memset(&fmixer, 0, sizeof(fmixer));
377 fmixer.card = card;
378 fmixer.mixer = card->mixer_oss;
379 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
380 }
381
382 #ifdef CONFIG_COMPAT
383 /* all compatible */
384 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
385 #else
386 #define snd_mixer_oss_ioctl_compat NULL
387 #endif
388
389 /*
390 * REGISTRATION PART
391 */
392
393 static struct file_operations snd_mixer_oss_f_ops =
394 {
395 .owner = THIS_MODULE,
396 .open = snd_mixer_oss_open,
397 .release = snd_mixer_oss_release,
398 .unlocked_ioctl = snd_mixer_oss_ioctl,
399 .compat_ioctl = snd_mixer_oss_ioctl_compat,
400 };
401
402 /*
403 * utilities
404 */
405
406 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
407 {
408 long orange = omax - omin, nrange = nmax - nmin;
409
410 if (orange == 0)
411 return 0;
412 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
413 }
414
415 /* convert from alsa native to oss values (0-100) */
416 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
417 {
418 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
419 return *old;
420 return snd_mixer_oss_conv(val, min, max, 0, 100);
421 }
422
423 /* convert from oss to alsa native values */
424 static long snd_mixer_oss_conv2(long val, long min, long max)
425 {
426 return snd_mixer_oss_conv(val, 0, 100, min, max);
427 }
428
429 #if 0
430 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
431 {
432 struct snd_mixer_oss *mixer = card->mixer_oss;
433 if (mixer)
434 mixer->mask_recsrc |= 1 << slot;
435 }
436
437 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
438 {
439 struct snd_mixer_oss *mixer = card->mixer_oss;
440 if (mixer && (mixer->mask_recsrc & (1 << slot)))
441 return 1;
442 return 0;
443 }
444 #endif
445
446 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
447
448 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
449 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
450 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
451 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
452 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
453 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
454 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
455 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
456 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
457 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
458 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
459
460 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
461
462 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
463 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
464 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
465 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
466 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
467 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
468 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
469 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
470 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
471 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
472 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
473
474 struct slot {
475 unsigned int signature;
476 unsigned int present;
477 unsigned int channels;
478 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
479 unsigned int capture_item;
480 struct snd_mixer_oss_assign_table *assigned;
481 unsigned int allocated: 1;
482 };
483
484 #define ID_UNKNOWN ((unsigned int)-1)
485
486 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
487 {
488 struct snd_card *card = mixer->card;
489 struct snd_ctl_elem_id id;
490
491 memset(&id, 0, sizeof(id));
492 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
493 strcpy(id.name, name);
494 id.index = index;
495 return snd_ctl_find_id(card, &id);
496 }
497
498 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
499 struct snd_mixer_oss_slot *pslot,
500 unsigned int numid,
501 int *left, int *right)
502 {
503 struct snd_ctl_elem_info *uinfo;
504 struct snd_ctl_elem_value *uctl;
505 struct snd_kcontrol *kctl;
506 struct snd_card *card = fmixer->card;
507
508 if (numid == ID_UNKNOWN)
509 return;
510 down_read(&card->controls_rwsem);
511 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
512 up_read(&card->controls_rwsem);
513 return;
514 }
515 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
516 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
517 if (uinfo == NULL || uctl == NULL)
518 goto __unalloc;
519 if (kctl->info(kctl, uinfo))
520 goto __unalloc;
521 if (kctl->get(kctl, uctl))
522 goto __unalloc;
523 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
524 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
525 goto __unalloc;
526 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
527 if (uinfo->count > 1)
528 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
529 __unalloc:
530 up_read(&card->controls_rwsem);
531 kfree(uctl);
532 kfree(uinfo);
533 }
534
535 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
536 struct snd_mixer_oss_slot *pslot,
537 unsigned int numid,
538 int *left, int *right,
539 int route)
540 {
541 struct snd_ctl_elem_info *uinfo;
542 struct snd_ctl_elem_value *uctl;
543 struct snd_kcontrol *kctl;
544 struct snd_card *card = fmixer->card;
545
546 if (numid == ID_UNKNOWN)
547 return;
548 down_read(&card->controls_rwsem);
549 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
550 up_read(&card->controls_rwsem);
551 return;
552 }
553 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
554 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
555 if (uinfo == NULL || uctl == NULL)
556 goto __unalloc;
557 if (kctl->info(kctl, uinfo))
558 goto __unalloc;
559 if (kctl->get(kctl, uctl))
560 goto __unalloc;
561 if (!uctl->value.integer.value[0]) {
562 *left = 0;
563 if (uinfo->count == 1)
564 *right = 0;
565 }
566 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
567 *right = 0;
568 __unalloc:
569 up_read(&card->controls_rwsem);
570 kfree(uctl);
571 kfree(uinfo);
572 }
573
574 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
575 struct snd_mixer_oss_slot *pslot,
576 int *left, int *right)
577 {
578 struct slot *slot = (struct slot *)pslot->private_data;
579
580 *left = *right = 100;
581 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
582 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
583 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
584 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
585 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
586 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
587 }
588 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
589 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
590 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
591 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
593 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
594 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
595 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
596 }
597 return 0;
598 }
599
600 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
601 struct snd_mixer_oss_slot *pslot,
602 unsigned int numid,
603 int left, int right)
604 {
605 struct snd_ctl_elem_info *uinfo;
606 struct snd_ctl_elem_value *uctl;
607 struct snd_kcontrol *kctl;
608 struct snd_card *card = fmixer->card;
609 int res;
610
611 if (numid == ID_UNKNOWN)
612 return;
613 down_read(&card->controls_rwsem);
614 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
615 return;
616 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
617 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
618 if (uinfo == NULL || uctl == NULL)
619 goto __unalloc;
620 if (kctl->info(kctl, uinfo))
621 goto __unalloc;
622 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
623 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
624 goto __unalloc;
625 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
626 if (uinfo->count > 1)
627 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
628 if ((res = kctl->put(kctl, uctl)) < 0)
629 goto __unalloc;
630 if (res > 0)
631 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
632 __unalloc:
633 up_read(&card->controls_rwsem);
634 kfree(uctl);
635 kfree(uinfo);
636 }
637
638 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
639 struct snd_mixer_oss_slot *pslot,
640 unsigned int numid,
641 int left, int right,
642 int route)
643 {
644 struct snd_ctl_elem_info *uinfo;
645 struct snd_ctl_elem_value *uctl;
646 struct snd_kcontrol *kctl;
647 struct snd_card *card = fmixer->card;
648 int res;
649
650 if (numid == ID_UNKNOWN)
651 return;
652 down_read(&card->controls_rwsem);
653 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
654 up_read(&fmixer->card->controls_rwsem);
655 return;
656 }
657 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
658 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
659 if (uinfo == NULL || uctl == NULL)
660 goto __unalloc;
661 if (kctl->info(kctl, uinfo))
662 goto __unalloc;
663 if (uinfo->count > 1) {
664 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
665 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
666 if (route) {
667 uctl->value.integer.value[1] =
668 uctl->value.integer.value[2] = 0;
669 }
670 } else {
671 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
672 }
673 if ((res = kctl->put(kctl, uctl)) < 0)
674 goto __unalloc;
675 if (res > 0)
676 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
677 __unalloc:
678 up_read(&card->controls_rwsem);
679 kfree(uctl);
680 kfree(uinfo);
681 }
682
683 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
684 struct snd_mixer_oss_slot *pslot,
685 int left, int right)
686 {
687 struct slot *slot = (struct slot *)pslot->private_data;
688
689 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
690 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
691 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
692 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
693 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
694 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
695 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
696 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
697 }
698 if (left || right) {
699 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
700 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
701 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
702 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
703 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
704 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], 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_GSWITCH) {
711 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
712 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
713 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
714 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
715 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
716 }
717 }
718 return 0;
719 }
720
721 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
722 struct snd_mixer_oss_slot *pslot,
723 int *active)
724 {
725 struct slot *slot = (struct slot *)pslot->private_data;
726 int left, right;
727
728 left = right = 1;
729 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
730 *active = (left || right) ? 1 : 0;
731 return 0;
732 }
733
734 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
735 struct snd_mixer_oss_slot *pslot,
736 int *active)
737 {
738 struct slot *slot = (struct slot *)pslot->private_data;
739 int left, right;
740
741 left = right = 1;
742 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
743 *active = (left || right) ? 1 : 0;
744 return 0;
745 }
746
747 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
748 struct snd_mixer_oss_slot *pslot,
749 int active)
750 {
751 struct slot *slot = (struct slot *)pslot->private_data;
752
753 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
754 return 0;
755 }
756
757 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
758 struct snd_mixer_oss_slot *pslot,
759 int active)
760 {
761 struct slot *slot = (struct slot *)pslot->private_data;
762
763 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
764 return 0;
765 }
766
767 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
768 {
769 struct snd_card *card = fmixer->card;
770 struct snd_mixer_oss *mixer = fmixer->mixer;
771 struct snd_kcontrol *kctl;
772 struct snd_mixer_oss_slot *pslot;
773 struct slot *slot;
774 struct snd_ctl_elem_info *uinfo;
775 struct snd_ctl_elem_value *uctl;
776 int err, idx;
777
778 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
779 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
780 if (uinfo == NULL || uctl == NULL) {
781 err = -ENOMEM;
782 goto __unlock;
783 }
784 down_read(&card->controls_rwsem);
785 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
786 if (! kctl) {
787 err = -ENOENT;
788 goto __unlock;
789 }
790 if ((err = kctl->info(kctl, uinfo)) < 0)
791 goto __unlock;
792 if ((err = kctl->get(kctl, uctl)) < 0)
793 goto __unlock;
794 for (idx = 0; idx < 32; idx++) {
795 if (!(mixer->mask_recsrc & (1 << idx)))
796 continue;
797 pslot = &mixer->slots[idx];
798 slot = (struct slot *)pslot->private_data;
799 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
800 continue;
801 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
802 continue;
803 if (slot->capture_item == uctl->value.enumerated.item[0]) {
804 *active_index = idx;
805 break;
806 }
807 }
808 err = 0;
809 __unlock:
810 up_read(&card->controls_rwsem);
811 kfree(uctl);
812 kfree(uinfo);
813 return err;
814 }
815
816 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
817 {
818 struct snd_card *card = fmixer->card;
819 struct snd_mixer_oss *mixer = fmixer->mixer;
820 struct snd_kcontrol *kctl;
821 struct snd_mixer_oss_slot *pslot;
822 struct slot *slot = NULL;
823 struct snd_ctl_elem_info *uinfo;
824 struct snd_ctl_elem_value *uctl;
825 int err;
826 unsigned int idx;
827
828 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
829 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
830 if (uinfo == NULL || uctl == NULL) {
831 err = -ENOMEM;
832 goto __unlock;
833 }
834 down_read(&card->controls_rwsem);
835 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
836 if (! kctl) {
837 err = -ENOENT;
838 goto __unlock;
839 }
840 if ((err = kctl->info(kctl, uinfo)) < 0)
841 goto __unlock;
842 for (idx = 0; idx < 32; idx++) {
843 if (!(mixer->mask_recsrc & (1 << idx)))
844 continue;
845 pslot = &mixer->slots[idx];
846 slot = (struct slot *)pslot->private_data;
847 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
848 continue;
849 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
850 continue;
851 if (idx == active_index)
852 break;
853 slot = NULL;
854 }
855 if (! slot)
856 goto __unlock;
857 for (idx = 0; idx < uinfo->count; idx++)
858 uctl->value.enumerated.item[idx] = slot->capture_item;
859 err = kctl->put(kctl, uctl);
860 if (err > 0)
861 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
862 err = 0;
863 __unlock:
864 up_read(&card->controls_rwsem);
865 kfree(uctl);
866 kfree(uinfo);
867 return err;
868 }
869
870 struct snd_mixer_oss_assign_table {
871 int oss_id;
872 const char *name;
873 int index;
874 };
875
876 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
877 {
878 struct snd_ctl_elem_info *info;
879 struct snd_kcontrol *kcontrol;
880 struct snd_card *card = mixer->card;
881 int err;
882
883 down_read(&card->controls_rwsem);
884 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
885 if (kcontrol == NULL) {
886 up_read(&card->controls_rwsem);
887 return 0;
888 }
889 info = kmalloc(sizeof(*info), GFP_KERNEL);
890 if (! info) {
891 up_read(&card->controls_rwsem);
892 return -ENOMEM;
893 }
894 if ((err = kcontrol->info(kcontrol, info)) < 0) {
895 up_read(&card->controls_rwsem);
896 kfree(info);
897 return err;
898 }
899 slot->numid[item] = kcontrol->id.numid;
900 up_read(&card->controls_rwsem);
901 if (info->count > slot->channels)
902 slot->channels = info->count;
903 slot->present |= 1 << item;
904 kfree(info);
905 return 0;
906 }
907
908 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
909 {
910 struct slot *p = (struct slot *)chn->private_data;
911 if (p) {
912 if (p->allocated && p->assigned) {
913 kfree(p->assigned->name);
914 kfree(p->assigned);
915 }
916 kfree(p);
917 }
918 }
919
920 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
921 {
922 int idx = rslot->number; /* remember this */
923 if (rslot->private_free)
924 rslot->private_free(rslot);
925 memset(rslot, 0, sizeof(*rslot));
926 rslot->number = idx;
927 }
928
929 /*
930 * build an OSS mixer element.
931 * ptr_allocated means the entry is dynamically allocated (change via proc file).
932 * when replace_old = 1, the old entry is replaced with the new one.
933 */
934 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)
935 {
936 struct slot slot;
937 struct slot *pslot;
938 struct snd_kcontrol *kctl;
939 struct snd_mixer_oss_slot *rslot;
940 char str[64];
941
942 /* check if already assigned */
943 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
944 return 0;
945
946 memset(&slot, 0, sizeof(slot));
947 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
948 if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
949 SNDRV_MIXER_OSS_ITEM_GLOBAL))
950 return 0;
951 sprintf(str, "%s Switch", ptr->name);
952 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
953 SNDRV_MIXER_OSS_ITEM_GSWITCH))
954 return 0;
955 sprintf(str, "%s Route", ptr->name);
956 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
957 SNDRV_MIXER_OSS_ITEM_GROUTE))
958 return 0;
959 sprintf(str, "%s Volume", ptr->name);
960 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
961 SNDRV_MIXER_OSS_ITEM_GVOLUME))
962 return 0;
963 sprintf(str, "%s Playback Switch", ptr->name);
964 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
965 SNDRV_MIXER_OSS_ITEM_PSWITCH))
966 return 0;
967 sprintf(str, "%s Playback Route", ptr->name);
968 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
969 SNDRV_MIXER_OSS_ITEM_PROUTE))
970 return 0;
971 sprintf(str, "%s Playback Volume", ptr->name);
972 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
973 SNDRV_MIXER_OSS_ITEM_PVOLUME))
974 return 0;
975 sprintf(str, "%s Capture Switch", ptr->name);
976 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
977 SNDRV_MIXER_OSS_ITEM_CSWITCH))
978 return 0;
979 sprintf(str, "%s Capture Route", ptr->name);
980 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
981 SNDRV_MIXER_OSS_ITEM_CROUTE))
982 return 0;
983 sprintf(str, "%s Capture Volume", ptr->name);
984 if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
985 SNDRV_MIXER_OSS_ITEM_CVOLUME))
986 return 0;
987 down_read(&mixer->card->controls_rwsem);
988 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
989 struct snd_ctl_elem_info *uinfo;
990
991 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
992 if (! uinfo) {
993 up_read(&mixer->card->controls_rwsem);
994 return -ENOMEM;
995 }
996
997 memset(uinfo, 0, sizeof(*uinfo));
998 if (kctl->info(kctl, uinfo)) {
999 up_read(&mixer->card->controls_rwsem);
1000 return 0;
1001 }
1002 strcpy(str, ptr->name);
1003 if (!strcmp(str, "Master"))
1004 strcpy(str, "Mix");
1005 if (!strcmp(str, "Master Mono"))
1006 strcpy(str, "Mix Mono");
1007 slot.capture_item = 0;
1008 if (!strcmp(uinfo->value.enumerated.name, str)) {
1009 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1010 } else {
1011 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1012 uinfo->value.enumerated.item = slot.capture_item;
1013 if (kctl->info(kctl, uinfo)) {
1014 up_read(&mixer->card->controls_rwsem);
1015 return 0;
1016 }
1017 if (!strcmp(uinfo->value.enumerated.name, str)) {
1018 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1019 break;
1020 }
1021 }
1022 }
1023 kfree(uinfo);
1024 }
1025 up_read(&mixer->card->controls_rwsem);
1026 if (slot.present != 0) {
1027 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1028 if (! pslot)
1029 return -ENOMEM;
1030 *pslot = slot;
1031 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1032 pslot->assigned = ptr;
1033 pslot->allocated = ptr_allocated;
1034 rslot = &mixer->slots[ptr->oss_id];
1035 mixer_slot_clear(rslot);
1036 rslot->stereo = slot.channels > 1 ? 1 : 0;
1037 rslot->get_volume = snd_mixer_oss_get_volume1;
1038 rslot->put_volume = snd_mixer_oss_put_volume1;
1039 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1040 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1041 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1042 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1043 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1044 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1045 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1046 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1047 mixer->mask_recsrc |= 1 << ptr->oss_id;
1048 }
1049 rslot->private_data = pslot;
1050 rslot->private_free = snd_mixer_oss_slot_free;
1051 return 1;
1052 }
1053 return 0;
1054 }
1055
1056 /*
1057 */
1058 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1059 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1060 MIXER_VOL(VOLUME),
1061 MIXER_VOL(BASS),
1062 MIXER_VOL(TREBLE),
1063 MIXER_VOL(SYNTH),
1064 MIXER_VOL(PCM),
1065 MIXER_VOL(SPEAKER),
1066 MIXER_VOL(LINE),
1067 MIXER_VOL(MIC),
1068 MIXER_VOL(CD),
1069 MIXER_VOL(IMIX),
1070 MIXER_VOL(ALTPCM),
1071 MIXER_VOL(RECLEV),
1072 MIXER_VOL(IGAIN),
1073 MIXER_VOL(OGAIN),
1074 MIXER_VOL(LINE1),
1075 MIXER_VOL(LINE2),
1076 MIXER_VOL(LINE3),
1077 MIXER_VOL(DIGITAL1),
1078 MIXER_VOL(DIGITAL2),
1079 MIXER_VOL(DIGITAL3),
1080 MIXER_VOL(PHONEIN),
1081 MIXER_VOL(PHONEOUT),
1082 MIXER_VOL(VIDEO),
1083 MIXER_VOL(RADIO),
1084 MIXER_VOL(MONITOR),
1085 };
1086
1087 /*
1088 * /proc interface
1089 */
1090
1091 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1092 struct snd_info_buffer *buffer)
1093 {
1094 struct snd_mixer_oss *mixer = entry->private_data;
1095 int i;
1096
1097 down(&mixer->reg_mutex);
1098 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1099 struct slot *p;
1100
1101 if (! oss_mixer_names[i])
1102 continue;
1103 p = (struct slot *)mixer->slots[i].private_data;
1104 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1105 if (p && p->assigned)
1106 snd_iprintf(buffer, "\"%s\" %d\n",
1107 p->assigned->name,
1108 p->assigned->index);
1109 else
1110 snd_iprintf(buffer, "\"\" 0\n");
1111 }
1112 up(&mixer->reg_mutex);
1113 }
1114
1115 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1116 struct snd_info_buffer *buffer)
1117 {
1118 struct snd_mixer_oss *mixer = entry->private_data;
1119 char line[128], str[32], idxstr[16], *cptr;
1120 int ch, idx;
1121 struct snd_mixer_oss_assign_table *tbl;
1122 struct slot *slot;
1123
1124 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1125 cptr = snd_info_get_str(str, line, sizeof(str));
1126 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1127 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1128 break;
1129 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1130 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1131 continue;
1132 }
1133 cptr = snd_info_get_str(str, cptr, sizeof(str));
1134 if (! *str) {
1135 /* remove the entry */
1136 down(&mixer->reg_mutex);
1137 mixer_slot_clear(&mixer->slots[ch]);
1138 up(&mixer->reg_mutex);
1139 continue;
1140 }
1141 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1142 idx = simple_strtoul(idxstr, NULL, 10);
1143 if (idx >= 0x4000) { /* too big */
1144 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1145 continue;
1146 }
1147 down(&mixer->reg_mutex);
1148 slot = (struct slot *)mixer->slots[ch].private_data;
1149 if (slot && slot->assigned &&
1150 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1151 /* not changed */
1152 goto __unlock;
1153 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1154 if (! tbl) {
1155 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1156 goto __unlock;
1157 }
1158 tbl->oss_id = ch;
1159 tbl->name = kstrdup(str, GFP_KERNEL);
1160 if (! tbl->name) {
1161 kfree(tbl);
1162 goto __unlock;
1163 }
1164 tbl->index = idx;
1165 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1166 kfree(tbl->name);
1167 kfree(tbl);
1168 }
1169 __unlock:
1170 up(&mixer->reg_mutex);
1171 }
1172 }
1173
1174 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1175 {
1176 struct snd_info_entry *entry;
1177
1178 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1179 mixer->card->proc_root);
1180 if (! entry)
1181 return;
1182 entry->content = SNDRV_INFO_CONTENT_TEXT;
1183 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1184 entry->c.text.read_size = 8192;
1185 entry->c.text.read = snd_mixer_oss_proc_read;
1186 entry->c.text.write_size = 8192;
1187 entry->c.text.write = snd_mixer_oss_proc_write;
1188 entry->private_data = mixer;
1189 if (snd_info_register(entry) < 0) {
1190 snd_info_free_entry(entry);
1191 entry = NULL;
1192 }
1193 mixer->proc_entry = entry;
1194 }
1195
1196 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1197 {
1198 if (mixer->proc_entry) {
1199 snd_info_unregister(mixer->proc_entry);
1200 mixer->proc_entry = NULL;
1201 }
1202 }
1203
1204 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1205 {
1206 static struct snd_mixer_oss_assign_table table[] = {
1207 { SOUND_MIXER_VOLUME, "Master", 0 },
1208 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1209 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1210 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1211 { SOUND_MIXER_SYNTH, "Synth", 0 },
1212 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1213 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1214 { SOUND_MIXER_PCM, "PCM", 0 },
1215 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
1216 { SOUND_MIXER_LINE, "Line", 0 },
1217 { SOUND_MIXER_MIC, "Mic", 0 },
1218 { SOUND_MIXER_CD, "CD", 0 },
1219 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1220 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1221 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1222 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1223 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1224 { SOUND_MIXER_IGAIN, "Capture", 0 },
1225 { SOUND_MIXER_OGAIN, "Playback", 0 },
1226 { SOUND_MIXER_LINE1, "Aux", 0 },
1227 { SOUND_MIXER_LINE2, "Aux", 1 },
1228 { SOUND_MIXER_LINE3, "Aux", 2 },
1229 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1230 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1231 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1232 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1233 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1234 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1235 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1236 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1237 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1238 { SOUND_MIXER_VIDEO, "Video", 0 },
1239 { SOUND_MIXER_RADIO, "Radio", 0 },
1240 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1241 };
1242 unsigned int idx;
1243
1244 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1245 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1246 if (mixer->mask_recsrc) {
1247 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1248 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1249 }
1250 }
1251
1252 /*
1253 *
1254 */
1255
1256 static int snd_mixer_oss_free1(void *private)
1257 {
1258 struct snd_mixer_oss *mixer = private;
1259 struct snd_card *card;
1260 int idx;
1261
1262 snd_assert(mixer != NULL, return -ENXIO);
1263 card = mixer->card;
1264 snd_assert(mixer == card->mixer_oss, return -ENXIO);
1265 card->mixer_oss = NULL;
1266 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1267 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1268 if (chn->private_free)
1269 chn->private_free(chn);
1270 }
1271 kfree(mixer);
1272 return 0;
1273 }
1274
1275 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1276 {
1277 struct snd_mixer_oss *mixer;
1278
1279 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1280 char name[128];
1281 int idx, err;
1282
1283 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1284 if (mixer == NULL)
1285 return -ENOMEM;
1286 init_MUTEX(&mixer->reg_mutex);
1287 sprintf(name, "mixer%i%i", card->number, 0);
1288 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1289 card, 0,
1290 &snd_mixer_oss_f_ops, card,
1291 name)) < 0) {
1292 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1293 card->number, 0);
1294 kfree(mixer);
1295 return err;
1296 }
1297 mixer->oss_dev_alloc = 1;
1298 mixer->card = card;
1299 if (*card->mixername)
1300 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1301 else
1302 strlcpy(mixer->name, name, sizeof(mixer->name));
1303 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1304 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1305 card->number,
1306 mixer->name);
1307 #endif
1308 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1309 mixer->slots[idx].number = idx;
1310 card->mixer_oss = mixer;
1311 snd_mixer_oss_build(mixer);
1312 snd_mixer_oss_proc_init(mixer);
1313 } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1314 mixer = card->mixer_oss;
1315 if (mixer == NULL || !mixer->oss_dev_alloc)
1316 return 0;
1317 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1318 mixer->oss_dev_alloc = 0;
1319 } else { /* free */
1320 mixer = card->mixer_oss;
1321 if (mixer == NULL)
1322 return 0;
1323 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1324 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1325 #endif
1326 if (mixer->oss_dev_alloc)
1327 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1328 snd_mixer_oss_proc_done(mixer);
1329 return snd_mixer_oss_free1(mixer);
1330 }
1331 return 0;
1332 }
1333
1334 static int __init alsa_mixer_oss_init(void)
1335 {
1336 int idx;
1337
1338 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1339 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1340 if (snd_cards[idx])
1341 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1342 }
1343 return 0;
1344 }
1345
1346 static void __exit alsa_mixer_oss_exit(void)
1347 {
1348 int idx;
1349
1350 snd_mixer_oss_notify_callback = NULL;
1351 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1352 if (snd_cards[idx])
1353 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1354 }
1355 }
1356
1357 module_init(alsa_mixer_oss_init)
1358 module_exit(alsa_mixer_oss_exit)
1359
1360 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
kernel source for telekom puls (alcatel/mediatek)