1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * OSS emulation layer for the mixer interface
4 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
7 #include <linux/init.h>
8 #include <linux/slab.h>
9 #include <linux/time.h>
10 #include <linux/string.h>
11 #include <linux/module.h>
12 #include <linux/compat.h>
13 #include <sound/core.h>
14 #include <sound/minors.h>
15 #include <sound/control.h>
16 #include <sound/info.h>
17 #include <sound/mixer_oss.h>
18 #include <linux/soundcard.h>
20 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
22 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
23 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
24 MODULE_LICENSE("GPL");
25 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
27 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
29 struct snd_card *card;
30 struct snd_mixer_oss_file *fmixer;
33 err = nonseekable_open(inode, file);
37 card = snd_lookup_oss_minor_data(iminor(inode),
38 SNDRV_OSS_DEVICE_TYPE_MIXER);
41 if (card->mixer_oss == NULL) {
45 err = snd_card_file_add(card, file);
50 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
52 snd_card_file_remove(card, file);
57 fmixer->mixer = card->mixer_oss;
58 file->private_data = fmixer;
59 if (!try_module_get(card->module)) {
61 snd_card_file_remove(card, file);
69 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
71 struct snd_mixer_oss_file *fmixer;
73 if (file->private_data) {
74 fmixer = file->private_data;
75 module_put(fmixer->card->module);
76 snd_card_file_remove(fmixer->card, file);
82 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
83 mixer_info __user *_info)
85 struct snd_card *card = fmixer->card;
86 struct snd_mixer_oss *mixer = fmixer->mixer;
87 struct mixer_info info;
89 memset(&info, 0, sizeof(info));
90 strscpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
91 strscpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
92 info.modify_counter = card->mixer_oss_change_count;
93 if (copy_to_user(_info, &info, sizeof(info)))
98 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
99 _old_mixer_info __user *_info)
101 struct snd_card *card = fmixer->card;
102 struct snd_mixer_oss *mixer = fmixer->mixer;
103 _old_mixer_info info;
105 memset(&info, 0, sizeof(info));
106 strscpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
107 strscpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
108 if (copy_to_user(_info, &info, sizeof(info)))
113 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
115 struct snd_mixer_oss *mixer = fmixer->mixer;
120 if (mixer->get_recsrc && mixer->put_recsrc)
121 result |= SOUND_CAP_EXCL_INPUT;
125 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
127 struct snd_mixer_oss *mixer = fmixer->mixer;
128 struct snd_mixer_oss_slot *pslot;
133 for (chn = 0; chn < 31; chn++) {
134 pslot = &mixer->slots[chn];
135 if (pslot->put_volume || pslot->put_recsrc)
141 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
143 struct snd_mixer_oss *mixer = fmixer->mixer;
144 struct snd_mixer_oss_slot *pslot;
149 for (chn = 0; chn < 31; chn++) {
150 pslot = &mixer->slots[chn];
151 if (pslot->put_volume && pslot->stereo)
157 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
159 struct snd_mixer_oss *mixer = fmixer->mixer;
164 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
165 result = mixer->mask_recsrc;
167 struct snd_mixer_oss_slot *pslot;
169 for (chn = 0; chn < 31; chn++) {
170 pslot = &mixer->slots[chn];
171 if (pslot->put_recsrc)
178 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
180 struct snd_mixer_oss *mixer = fmixer->mixer;
185 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
188 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
192 struct snd_mixer_oss_slot *pslot;
194 for (chn = 0; chn < 31; chn++) {
195 pslot = &mixer->slots[chn];
196 if (pslot->get_recsrc) {
198 pslot->get_recsrc(fmixer, pslot, &active);
204 return mixer->oss_recsrc = result;
207 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
209 struct snd_mixer_oss *mixer = fmixer->mixer;
210 struct snd_mixer_oss_slot *pslot;
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, &index);
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);
232 for (chn = 0; chn < 31; chn++) {
233 pslot = &mixer->slots[chn];
234 if (pslot->get_recsrc) {
236 pslot->get_recsrc(fmixer, pslot, &active);
245 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
247 struct snd_mixer_oss *mixer = fmixer->mixer;
248 struct snd_mixer_oss_slot *pslot;
249 int result = 0, left, right;
251 if (mixer == NULL || slot > 30)
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);
260 if (snd_BUG_ON(left < 0 || left > 100))
262 if (snd_BUG_ON(right < 0 || right > 100))
265 pslot->volume[0] = left;
266 pslot->volume[1] = right;
267 result = (left & 0xff) | ((right & 0xff) << 8);
272 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
273 int slot, int volume)
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;
279 if (mixer == NULL || slot > 30)
281 pslot = &mixer->slots[slot];
288 if (pslot->put_volume)
289 result = pslot->put_volume(fmixer, pslot, left, right);
292 pslot->volume[0] = left;
293 pslot->volume[1] = right;
294 return (left & 0xff) | ((right & 0xff) << 8);
297 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
299 void __user *argp = (void __user *)arg;
300 int __user *p = argp;
303 if (snd_BUG_ON(!fmixer))
305 if (((cmd >> 8) & 0xff) == 'M') {
307 case SOUND_MIXER_INFO:
308 return snd_mixer_oss_info(fmixer, argp);
309 case SOUND_OLD_MIXER_INFO:
310 return snd_mixer_oss_info_obsolete(fmixer, argp);
311 case SOUND_MIXER_WRITE_RECSRC:
312 if (get_user(tmp, p))
314 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
317 return put_user(tmp, p);
319 return put_user(SNDRV_OSS_VERSION, p);
320 case OSS_ALSAEMULVER:
321 return put_user(1, p);
322 case SOUND_MIXER_READ_DEVMASK:
323 tmp = snd_mixer_oss_devmask(fmixer);
326 return put_user(tmp, p);
327 case SOUND_MIXER_READ_STEREODEVS:
328 tmp = snd_mixer_oss_stereodevs(fmixer);
331 return put_user(tmp, p);
332 case SOUND_MIXER_READ_RECMASK:
333 tmp = snd_mixer_oss_recmask(fmixer);
336 return put_user(tmp, p);
337 case SOUND_MIXER_READ_CAPS:
338 tmp = snd_mixer_oss_caps(fmixer);
341 return put_user(tmp, p);
342 case SOUND_MIXER_READ_RECSRC:
343 tmp = snd_mixer_oss_get_recsrc(fmixer);
346 return put_user(tmp, p);
350 if (get_user(tmp, p))
352 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
355 return put_user(tmp, p);
356 } else if (cmd & SIOC_OUT) {
357 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
360 return put_user(tmp, p);
365 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
367 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
370 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
372 struct snd_mixer_oss_file fmixer;
374 if (snd_BUG_ON(!card))
376 if (card->mixer_oss == NULL)
378 memset(&fmixer, 0, sizeof(fmixer));
380 fmixer.mixer = card->mixer_oss;
381 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
383 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
387 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
390 return snd_mixer_oss_ioctl1(file->private_data, cmd,
391 (unsigned long)compat_ptr(arg));
394 #define snd_mixer_oss_ioctl_compat NULL
401 static const struct file_operations snd_mixer_oss_f_ops =
403 .owner = THIS_MODULE,
404 .open = snd_mixer_oss_open,
405 .release = snd_mixer_oss_release,
407 .unlocked_ioctl = snd_mixer_oss_ioctl,
408 .compat_ioctl = snd_mixer_oss_ioctl_compat,
415 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
417 long orange = omax - omin, nrange = nmax - nmin;
421 return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin;
424 /* convert from alsa native to oss values (0-100) */
425 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
427 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
429 return snd_mixer_oss_conv(val, min, max, 0, 100);
432 /* convert from oss to alsa native values */
433 static long snd_mixer_oss_conv2(long val, long min, long max)
435 return snd_mixer_oss_conv(val, 0, 100, min, max);
439 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
441 struct snd_mixer_oss *mixer = card->mixer_oss;
443 mixer->mask_recsrc |= 1 << slot;
446 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
448 struct snd_mixer_oss *mixer = card->mixer_oss;
449 if (mixer && (mixer->mask_recsrc & (1 << slot)))
455 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
457 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
458 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
459 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
460 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
461 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
462 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
463 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
464 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
465 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
466 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
467 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
469 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
471 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
472 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
473 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
474 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
475 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
476 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
477 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
478 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
479 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
480 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
481 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
484 unsigned int signature;
485 unsigned int present;
486 unsigned int channels;
487 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
488 unsigned int capture_item;
489 const struct snd_mixer_oss_assign_table *assigned;
490 unsigned int allocated: 1;
493 #define ID_UNKNOWN ((unsigned int)-1)
495 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
497 struct snd_card *card = mixer->card;
498 struct snd_ctl_elem_id id;
500 memset(&id, 0, sizeof(id));
501 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
502 strscpy(id.name, name, sizeof(id.name));
504 return snd_ctl_find_id(card, &id);
507 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
508 struct snd_mixer_oss_slot *pslot,
510 int *left, int *right)
512 struct snd_ctl_elem_info *uinfo;
513 struct snd_ctl_elem_value *uctl;
514 struct snd_kcontrol *kctl;
515 struct snd_card *card = fmixer->card;
517 if (numid == ID_UNKNOWN)
519 down_read(&card->controls_rwsem);
520 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
521 up_read(&card->controls_rwsem);
524 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
525 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
526 if (uinfo == NULL || uctl == NULL)
528 if (kctl->info(kctl, uinfo))
530 if (kctl->get(kctl, uctl))
532 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
533 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
535 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
536 if (uinfo->count > 1)
537 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
539 up_read(&card->controls_rwsem);
544 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
545 struct snd_mixer_oss_slot *pslot,
547 int *left, int *right,
550 struct snd_ctl_elem_info *uinfo;
551 struct snd_ctl_elem_value *uctl;
552 struct snd_kcontrol *kctl;
553 struct snd_card *card = fmixer->card;
555 if (numid == ID_UNKNOWN)
557 down_read(&card->controls_rwsem);
558 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
559 up_read(&card->controls_rwsem);
562 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
563 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
564 if (uinfo == NULL || uctl == NULL)
566 if (kctl->info(kctl, uinfo))
568 if (kctl->get(kctl, uctl))
570 if (!uctl->value.integer.value[0]) {
572 if (uinfo->count == 1)
575 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
578 up_read(&card->controls_rwsem);
583 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
584 struct snd_mixer_oss_slot *pslot,
585 int *left, int *right)
587 struct slot *slot = pslot->private_data;
589 *left = *right = 100;
590 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
591 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
592 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
593 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
594 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
595 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
597 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
598 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
599 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
600 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
601 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
602 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
603 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
604 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
609 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
610 struct snd_mixer_oss_slot *pslot,
614 struct snd_ctl_elem_info *uinfo;
615 struct snd_ctl_elem_value *uctl;
616 struct snd_kcontrol *kctl;
617 struct snd_card *card = fmixer->card;
620 if (numid == ID_UNKNOWN)
622 down_read(&card->controls_rwsem);
623 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
624 up_read(&card->controls_rwsem);
627 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
628 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
629 if (uinfo == NULL || uctl == NULL)
631 if (kctl->info(kctl, uinfo))
633 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
634 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
636 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
637 if (uinfo->count > 1)
638 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
639 if ((res = kctl->put(kctl, uctl)) < 0)
642 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
644 up_read(&card->controls_rwsem);
649 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
650 struct snd_mixer_oss_slot *pslot,
655 struct snd_ctl_elem_info *uinfo;
656 struct snd_ctl_elem_value *uctl;
657 struct snd_kcontrol *kctl;
658 struct snd_card *card = fmixer->card;
661 if (numid == ID_UNKNOWN)
663 down_read(&card->controls_rwsem);
664 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
665 up_read(&card->controls_rwsem);
668 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
669 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
670 if (uinfo == NULL || uctl == NULL)
672 if (kctl->info(kctl, uinfo))
674 if (uinfo->count > 1) {
675 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
676 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
678 uctl->value.integer.value[1] =
679 uctl->value.integer.value[2] = 0;
682 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
684 if ((res = kctl->put(kctl, uctl)) < 0)
687 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
689 up_read(&card->controls_rwsem);
694 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
695 struct snd_mixer_oss_slot *pslot,
698 struct slot *slot = pslot->private_data;
700 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
701 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
702 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
703 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
704 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
705 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
706 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
707 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
708 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
709 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
710 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
713 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
714 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
715 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
716 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
717 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
718 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
719 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
720 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
721 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
722 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
723 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
724 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
726 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
727 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
728 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
729 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
730 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
731 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
732 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
733 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
734 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
735 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
736 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
737 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
743 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
744 struct snd_mixer_oss_slot *pslot,
747 struct slot *slot = pslot->private_data;
751 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
752 *active = (left || right) ? 1 : 0;
756 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
757 struct snd_mixer_oss_slot *pslot,
760 struct slot *slot = pslot->private_data;
764 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
765 *active = (left || right) ? 1 : 0;
769 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
770 struct snd_mixer_oss_slot *pslot,
773 struct slot *slot = pslot->private_data;
775 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
779 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
780 struct snd_mixer_oss_slot *pslot,
783 struct slot *slot = pslot->private_data;
785 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
789 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
791 struct snd_card *card = fmixer->card;
792 struct snd_mixer_oss *mixer = fmixer->mixer;
793 struct snd_kcontrol *kctl;
794 struct snd_mixer_oss_slot *pslot;
796 struct snd_ctl_elem_info *uinfo;
797 struct snd_ctl_elem_value *uctl;
800 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
801 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
802 if (uinfo == NULL || uctl == NULL) {
806 down_read(&card->controls_rwsem);
807 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
812 if ((err = kctl->info(kctl, uinfo)) < 0)
814 if ((err = kctl->get(kctl, uctl)) < 0)
816 for (idx = 0; idx < 32; idx++) {
817 if (!(mixer->mask_recsrc & (1 << idx)))
819 pslot = &mixer->slots[idx];
820 slot = pslot->private_data;
821 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
823 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
825 if (slot->capture_item == uctl->value.enumerated.item[0]) {
832 up_read(&card->controls_rwsem);
839 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
841 struct snd_card *card = fmixer->card;
842 struct snd_mixer_oss *mixer = fmixer->mixer;
843 struct snd_kcontrol *kctl;
844 struct snd_mixer_oss_slot *pslot;
845 struct slot *slot = NULL;
846 struct snd_ctl_elem_info *uinfo;
847 struct snd_ctl_elem_value *uctl;
851 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
852 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
853 if (uinfo == NULL || uctl == NULL) {
857 down_read(&card->controls_rwsem);
858 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
863 if ((err = kctl->info(kctl, uinfo)) < 0)
865 for (idx = 0; idx < 32; idx++) {
866 if (!(mixer->mask_recsrc & (1 << idx)))
868 pslot = &mixer->slots[idx];
869 slot = pslot->private_data;
870 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
872 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
874 if (idx == active_index)
880 for (idx = 0; idx < uinfo->count; idx++)
881 uctl->value.enumerated.item[idx] = slot->capture_item;
882 err = kctl->put(kctl, uctl);
884 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
887 up_read(&card->controls_rwsem);
894 struct snd_mixer_oss_assign_table {
900 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
902 struct snd_ctl_elem_info *info;
903 struct snd_kcontrol *kcontrol;
904 struct snd_card *card = mixer->card;
907 down_read(&card->controls_rwsem);
908 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
909 if (kcontrol == NULL) {
910 up_read(&card->controls_rwsem);
913 info = kmalloc(sizeof(*info), GFP_KERNEL);
915 up_read(&card->controls_rwsem);
918 if ((err = kcontrol->info(kcontrol, info)) < 0) {
919 up_read(&card->controls_rwsem);
923 slot->numid[item] = kcontrol->id.numid;
924 up_read(&card->controls_rwsem);
925 if (info->count > slot->channels)
926 slot->channels = info->count;
927 slot->present |= 1 << item;
932 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
934 struct slot *p = chn->private_data;
936 if (p->allocated && p->assigned) {
937 kfree_const(p->assigned->name);
938 kfree_const(p->assigned);
944 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
946 int idx = rslot->number; /* remember this */
947 if (rslot->private_free)
948 rslot->private_free(rslot);
949 memset(rslot, 0, sizeof(*rslot));
953 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
954 snd_mixer_oss_build_input! */
955 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
956 const struct snd_mixer_oss_assign_table *ptr,
962 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
963 SNDRV_MIXER_OSS_ITEM_GLOBAL);
966 sprintf(str, "%s Switch", ptr->name);
967 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
968 SNDRV_MIXER_OSS_ITEM_GSWITCH);
971 sprintf(str, "%s Route", ptr->name);
972 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
973 SNDRV_MIXER_OSS_ITEM_GROUTE);
976 sprintf(str, "%s Volume", ptr->name);
977 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
978 SNDRV_MIXER_OSS_ITEM_GVOLUME);
981 sprintf(str, "%s Playback Switch", ptr->name);
982 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
983 SNDRV_MIXER_OSS_ITEM_PSWITCH);
986 sprintf(str, "%s Playback Route", ptr->name);
987 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
988 SNDRV_MIXER_OSS_ITEM_PROUTE);
991 sprintf(str, "%s Playback Volume", ptr->name);
992 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
993 SNDRV_MIXER_OSS_ITEM_PVOLUME);
996 sprintf(str, "%s Capture Switch", ptr->name);
997 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
998 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1001 sprintf(str, "%s Capture Route", ptr->name);
1002 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1003 SNDRV_MIXER_OSS_ITEM_CROUTE);
1006 sprintf(str, "%s Capture Volume", ptr->name);
1007 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1008 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1016 * build an OSS mixer element.
1017 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1018 * when replace_old = 1, the old entry is replaced with the new one.
1020 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
1021 const struct snd_mixer_oss_assign_table *ptr,
1022 int ptr_allocated, int replace_old)
1026 struct snd_kcontrol *kctl;
1027 struct snd_mixer_oss_slot *rslot;
1030 /* check if already assigned */
1031 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1034 memset(&slot, 0, sizeof(slot));
1035 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1036 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1038 down_read(&mixer->card->controls_rwsem);
1039 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1040 struct snd_ctl_elem_info *uinfo;
1042 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1044 up_read(&mixer->card->controls_rwsem);
1048 if (kctl->info(kctl, uinfo)) {
1049 up_read(&mixer->card->controls_rwsem);
1053 strcpy(str, ptr->name);
1054 if (!strcmp(str, "Master"))
1056 if (!strcmp(str, "Master Mono"))
1057 strcpy(str, "Mix Mono");
1058 slot.capture_item = 0;
1059 if (!strcmp(uinfo->value.enumerated.name, str)) {
1060 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1062 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1063 uinfo->value.enumerated.item = slot.capture_item;
1064 if (kctl->info(kctl, uinfo)) {
1065 up_read(&mixer->card->controls_rwsem);
1069 if (!strcmp(uinfo->value.enumerated.name, str)) {
1070 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1077 up_read(&mixer->card->controls_rwsem);
1078 if (slot.present != 0) {
1079 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1083 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1084 pslot->assigned = ptr;
1085 pslot->allocated = ptr_allocated;
1086 rslot = &mixer->slots[ptr->oss_id];
1087 mixer_slot_clear(rslot);
1088 rslot->stereo = slot.channels > 1 ? 1 : 0;
1089 rslot->get_volume = snd_mixer_oss_get_volume1;
1090 rslot->put_volume = snd_mixer_oss_put_volume1;
1091 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1092 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1093 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1094 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1095 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1096 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1097 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1098 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1099 mixer->mask_recsrc |= 1 << ptr->oss_id;
1101 rslot->private_data = pslot;
1102 rslot->private_free = snd_mixer_oss_slot_free;
1108 #ifdef CONFIG_SND_PROC_FS
1111 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1112 static const char * const oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1130 MIXER_VOL(DIGITAL1),
1131 MIXER_VOL(DIGITAL2),
1132 MIXER_VOL(DIGITAL3),
1134 MIXER_VOL(PHONEOUT),
1144 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1145 struct snd_info_buffer *buffer)
1147 struct snd_mixer_oss *mixer = entry->private_data;
1150 mutex_lock(&mixer->reg_mutex);
1151 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1154 if (! oss_mixer_names[i])
1156 p = (struct slot *)mixer->slots[i].private_data;
1157 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1158 if (p && p->assigned)
1159 snd_iprintf(buffer, "\"%s\" %d\n",
1161 p->assigned->index);
1163 snd_iprintf(buffer, "\"\" 0\n");
1165 mutex_unlock(&mixer->reg_mutex);
1168 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1169 struct snd_info_buffer *buffer)
1171 struct snd_mixer_oss *mixer = entry->private_data;
1172 char line[128], str[32], idxstr[16];
1176 struct snd_mixer_oss_assign_table *tbl;
1179 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1180 cptr = snd_info_get_str(str, line, sizeof(str));
1181 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1182 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1184 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1185 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1189 cptr = snd_info_get_str(str, cptr, sizeof(str));
1191 /* remove the entry */
1192 mutex_lock(&mixer->reg_mutex);
1193 mixer_slot_clear(&mixer->slots[ch]);
1194 mutex_unlock(&mixer->reg_mutex);
1197 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1198 idx = simple_strtoul(idxstr, NULL, 10);
1199 if (idx >= 0x4000) { /* too big */
1200 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1203 mutex_lock(&mixer->reg_mutex);
1204 slot = (struct slot *)mixer->slots[ch].private_data;
1205 if (slot && slot->assigned &&
1206 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1209 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1213 tbl->name = kstrdup(str, GFP_KERNEL);
1219 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1224 mutex_unlock(&mixer->reg_mutex);
1228 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1230 struct snd_info_entry *entry;
1232 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1233 mixer->card->proc_root);
1236 entry->content = SNDRV_INFO_CONTENT_TEXT;
1237 entry->mode = S_IFREG | 0644;
1238 entry->c.text.read = snd_mixer_oss_proc_read;
1239 entry->c.text.write = snd_mixer_oss_proc_write;
1240 entry->private_data = mixer;
1241 if (snd_info_register(entry) < 0) {
1242 snd_info_free_entry(entry);
1245 mixer->proc_entry = entry;
1248 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1250 snd_info_free_entry(mixer->proc_entry);
1251 mixer->proc_entry = NULL;
1253 #else /* !CONFIG_SND_PROC_FS */
1254 #define snd_mixer_oss_proc_init(mix)
1255 #define snd_mixer_oss_proc_done(mix)
1256 #endif /* CONFIG_SND_PROC_FS */
1258 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1260 static const struct snd_mixer_oss_assign_table table[] = {
1261 { SOUND_MIXER_VOLUME, "Master", 0 },
1262 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1263 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1264 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1265 { SOUND_MIXER_SYNTH, "Synth", 0 },
1266 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1267 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1268 { SOUND_MIXER_PCM, "PCM", 0 },
1269 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1270 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1271 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1272 { SOUND_MIXER_LINE, "Line", 0 },
1273 { SOUND_MIXER_MIC, "Mic", 0 },
1274 { SOUND_MIXER_CD, "CD", 0 },
1275 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1276 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1277 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1278 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1279 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1280 { SOUND_MIXER_IGAIN, "Capture", 0 },
1281 { SOUND_MIXER_OGAIN, "Playback", 0 },
1282 { SOUND_MIXER_LINE1, "Aux", 0 },
1283 { SOUND_MIXER_LINE2, "Aux", 1 },
1284 { SOUND_MIXER_LINE3, "Aux", 2 },
1285 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1286 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1287 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1288 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1289 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1290 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1291 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1292 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1293 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1294 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1295 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1296 { SOUND_MIXER_VIDEO, "Video", 0 },
1297 { SOUND_MIXER_RADIO, "Radio", 0 },
1298 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1302 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1303 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1304 if (mixer->mask_recsrc) {
1305 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1306 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1314 static int snd_mixer_oss_free1(void *private)
1316 struct snd_mixer_oss *mixer = private;
1317 struct snd_card *card;
1323 if (snd_BUG_ON(mixer != card->mixer_oss))
1325 card->mixer_oss = NULL;
1326 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1327 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1328 if (chn->private_free)
1329 chn->private_free(chn);
1335 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1337 struct snd_mixer_oss *mixer;
1339 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1342 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1345 mutex_init(&mixer->reg_mutex);
1346 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1348 &snd_mixer_oss_f_ops, card)) < 0) {
1350 "unable to register OSS mixer device %i:%i\n",
1355 mixer->oss_dev_alloc = 1;
1357 if (*card->mixername)
1358 strscpy(mixer->name, card->mixername, sizeof(mixer->name));
1360 snprintf(mixer->name, sizeof(mixer->name),
1361 "mixer%i", card->number);
1362 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1363 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1367 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1368 mixer->slots[idx].number = idx;
1369 card->mixer_oss = mixer;
1370 snd_mixer_oss_build(mixer);
1371 snd_mixer_oss_proc_init(mixer);
1373 mixer = card->mixer_oss;
1376 if (mixer->oss_dev_alloc) {
1377 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1378 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1380 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1381 mixer->oss_dev_alloc = 0;
1383 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1385 snd_mixer_oss_proc_done(mixer);
1386 return snd_mixer_oss_free1(mixer);
1391 static int __init alsa_mixer_oss_init(void)
1393 struct snd_card *card;
1396 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1397 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1398 card = snd_card_ref(idx);
1400 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1401 snd_card_unref(card);
1407 static void __exit alsa_mixer_oss_exit(void)
1409 struct snd_card *card;
1412 snd_mixer_oss_notify_callback = NULL;
1413 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1414 card = snd_card_ref(idx);
1416 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1417 snd_card_unref(card);
1422 module_init(alsa_mixer_oss_init)
1423 module_exit(alsa_mixer_oss_exit)