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 err = mixer->get_recsrc(fmixer, &index);
193 struct snd_mixer_oss_slot *pslot;
195 for (chn = 0; chn < 31; chn++) {
196 pslot = &mixer->slots[chn];
197 if (pslot->get_recsrc) {
199 pslot->get_recsrc(fmixer, pslot, &active);
205 return mixer->oss_recsrc = result;
208 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
210 struct snd_mixer_oss *mixer = fmixer->mixer;
211 struct snd_mixer_oss_slot *pslot;
218 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
219 if (recsrc & ~mixer->oss_recsrc)
220 recsrc &= ~mixer->oss_recsrc;
221 mixer->put_recsrc(fmixer, ffz(~recsrc));
222 mixer->get_recsrc(fmixer, &index);
225 for (chn = 0; chn < 31; chn++) {
226 pslot = &mixer->slots[chn];
227 if (pslot->put_recsrc) {
228 active = (recsrc & (1 << chn)) ? 1 : 0;
229 pslot->put_recsrc(fmixer, pslot, active);
233 for (chn = 0; chn < 31; chn++) {
234 pslot = &mixer->slots[chn];
235 if (pslot->get_recsrc) {
237 pslot->get_recsrc(fmixer, pslot, &active);
246 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
248 struct snd_mixer_oss *mixer = fmixer->mixer;
249 struct snd_mixer_oss_slot *pslot;
250 int result = 0, left, right;
252 if (mixer == NULL || slot > 30)
254 pslot = &mixer->slots[slot];
255 left = pslot->volume[0];
256 right = pslot->volume[1];
257 if (pslot->get_volume)
258 result = pslot->get_volume(fmixer, pslot, &left, &right);
261 if (snd_BUG_ON(left < 0 || left > 100))
263 if (snd_BUG_ON(right < 0 || right > 100))
266 pslot->volume[0] = left;
267 pslot->volume[1] = right;
268 result = (left & 0xff) | ((right & 0xff) << 8);
273 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
274 int slot, int volume)
276 struct snd_mixer_oss *mixer = fmixer->mixer;
277 struct snd_mixer_oss_slot *pslot;
278 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
280 if (mixer == NULL || slot > 30)
282 pslot = &mixer->slots[slot];
289 if (pslot->put_volume)
290 result = pslot->put_volume(fmixer, pslot, left, right);
293 pslot->volume[0] = left;
294 pslot->volume[1] = right;
295 return (left & 0xff) | ((right & 0xff) << 8);
298 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
300 void __user *argp = (void __user *)arg;
301 int __user *p = argp;
304 if (snd_BUG_ON(!fmixer))
306 if (((cmd >> 8) & 0xff) == 'M') {
308 case SOUND_MIXER_INFO:
309 return snd_mixer_oss_info(fmixer, argp);
310 case SOUND_OLD_MIXER_INFO:
311 return snd_mixer_oss_info_obsolete(fmixer, argp);
312 case SOUND_MIXER_WRITE_RECSRC:
313 if (get_user(tmp, p))
315 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
318 return put_user(tmp, p);
320 return put_user(SNDRV_OSS_VERSION, p);
321 case OSS_ALSAEMULVER:
322 return put_user(1, p);
323 case SOUND_MIXER_READ_DEVMASK:
324 tmp = snd_mixer_oss_devmask(fmixer);
327 return put_user(tmp, p);
328 case SOUND_MIXER_READ_STEREODEVS:
329 tmp = snd_mixer_oss_stereodevs(fmixer);
332 return put_user(tmp, p);
333 case SOUND_MIXER_READ_RECMASK:
334 tmp = snd_mixer_oss_recmask(fmixer);
337 return put_user(tmp, p);
338 case SOUND_MIXER_READ_CAPS:
339 tmp = snd_mixer_oss_caps(fmixer);
342 return put_user(tmp, p);
343 case SOUND_MIXER_READ_RECSRC:
344 tmp = snd_mixer_oss_get_recsrc(fmixer);
347 return put_user(tmp, p);
351 if (get_user(tmp, p))
353 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
356 return put_user(tmp, p);
357 } else if (cmd & SIOC_OUT) {
358 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
361 return put_user(tmp, p);
366 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
368 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
371 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
373 struct snd_mixer_oss_file fmixer;
375 if (snd_BUG_ON(!card))
377 if (card->mixer_oss == NULL)
379 memset(&fmixer, 0, sizeof(fmixer));
381 fmixer.mixer = card->mixer_oss;
382 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
384 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
388 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
391 return snd_mixer_oss_ioctl1(file->private_data, cmd,
392 (unsigned long)compat_ptr(arg));
395 #define snd_mixer_oss_ioctl_compat NULL
402 static const struct file_operations snd_mixer_oss_f_ops =
404 .owner = THIS_MODULE,
405 .open = snd_mixer_oss_open,
406 .release = snd_mixer_oss_release,
408 .unlocked_ioctl = snd_mixer_oss_ioctl,
409 .compat_ioctl = snd_mixer_oss_ioctl_compat,
416 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
418 long orange = omax - omin, nrange = nmax - nmin;
422 return DIV_ROUND_CLOSEST(nrange * (val - omin), orange) + nmin;
425 /* convert from alsa native to oss values (0-100) */
426 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
428 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
430 return snd_mixer_oss_conv(val, min, max, 0, 100);
433 /* convert from oss to alsa native values */
434 static long snd_mixer_oss_conv2(long val, long min, long max)
436 return snd_mixer_oss_conv(val, 0, 100, min, max);
440 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
442 struct snd_mixer_oss *mixer = card->mixer_oss;
444 mixer->mask_recsrc |= 1 << slot;
447 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
449 struct snd_mixer_oss *mixer = card->mixer_oss;
450 if (mixer && (mixer->mask_recsrc & (1 << slot)))
456 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
458 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
459 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
460 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
461 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
462 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
463 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
464 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
465 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
466 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
467 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
468 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
470 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
472 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
473 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
474 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
475 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
476 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
477 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
478 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
479 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
480 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
481 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
482 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
485 unsigned int signature;
486 unsigned int present;
487 unsigned int channels;
488 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
489 unsigned int capture_item;
490 const struct snd_mixer_oss_assign_table *assigned;
491 unsigned int allocated: 1;
494 #define ID_UNKNOWN ((unsigned int)-1)
496 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
498 struct snd_card *card = mixer->card;
499 struct snd_ctl_elem_id id;
501 memset(&id, 0, sizeof(id));
502 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
503 strscpy(id.name, name, sizeof(id.name));
505 return snd_ctl_find_id(card, &id);
508 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
509 struct snd_mixer_oss_slot *pslot,
511 int *left, int *right)
513 struct snd_ctl_elem_info *uinfo;
514 struct snd_ctl_elem_value *uctl;
515 struct snd_kcontrol *kctl;
516 struct snd_card *card = fmixer->card;
518 if (numid == ID_UNKNOWN)
520 down_read(&card->controls_rwsem);
521 kctl = snd_ctl_find_numid(card, numid);
523 up_read(&card->controls_rwsem);
526 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
527 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
528 if (uinfo == NULL || uctl == NULL)
530 if (kctl->info(kctl, uinfo))
532 if (kctl->get(kctl, uctl))
534 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
535 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
537 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
538 if (uinfo->count > 1)
539 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
541 up_read(&card->controls_rwsem);
546 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
547 struct snd_mixer_oss_slot *pslot,
549 int *left, int *right,
552 struct snd_ctl_elem_info *uinfo;
553 struct snd_ctl_elem_value *uctl;
554 struct snd_kcontrol *kctl;
555 struct snd_card *card = fmixer->card;
557 if (numid == ID_UNKNOWN)
559 down_read(&card->controls_rwsem);
560 kctl = snd_ctl_find_numid(card, numid);
562 up_read(&card->controls_rwsem);
565 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
566 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
567 if (uinfo == NULL || uctl == NULL)
569 if (kctl->info(kctl, uinfo))
571 if (kctl->get(kctl, uctl))
573 if (!uctl->value.integer.value[0]) {
575 if (uinfo->count == 1)
578 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
581 up_read(&card->controls_rwsem);
586 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
587 struct snd_mixer_oss_slot *pslot,
588 int *left, int *right)
590 struct slot *slot = pslot->private_data;
592 *left = *right = 100;
593 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
594 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
595 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
596 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
597 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
598 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
600 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
601 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
602 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
603 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
604 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
605 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
606 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
607 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
612 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
613 struct snd_mixer_oss_slot *pslot,
617 struct snd_ctl_elem_info *uinfo;
618 struct snd_ctl_elem_value *uctl;
619 struct snd_kcontrol *kctl;
620 struct snd_card *card = fmixer->card;
623 if (numid == ID_UNKNOWN)
625 down_read(&card->controls_rwsem);
626 kctl = snd_ctl_find_numid(card, numid);
628 up_read(&card->controls_rwsem);
631 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
632 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
633 if (uinfo == NULL || uctl == NULL)
635 if (kctl->info(kctl, uinfo))
637 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
638 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
640 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
641 if (uinfo->count > 1)
642 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
643 res = kctl->put(kctl, uctl);
647 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
649 up_read(&card->controls_rwsem);
654 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
655 struct snd_mixer_oss_slot *pslot,
660 struct snd_ctl_elem_info *uinfo;
661 struct snd_ctl_elem_value *uctl;
662 struct snd_kcontrol *kctl;
663 struct snd_card *card = fmixer->card;
666 if (numid == ID_UNKNOWN)
668 down_read(&card->controls_rwsem);
669 kctl = snd_ctl_find_numid(card, numid);
671 up_read(&card->controls_rwsem);
674 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
675 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
676 if (uinfo == NULL || uctl == NULL)
678 if (kctl->info(kctl, uinfo))
680 if (uinfo->count > 1) {
681 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
682 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
684 uctl->value.integer.value[1] =
685 uctl->value.integer.value[2] = 0;
688 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
690 res = kctl->put(kctl, uctl);
694 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
696 up_read(&card->controls_rwsem);
701 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
702 struct snd_mixer_oss_slot *pslot,
705 struct slot *slot = pslot->private_data;
707 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
708 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
709 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
710 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
711 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
712 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
713 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
714 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
715 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
716 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
717 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
720 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
721 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
722 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
723 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
724 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
725 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
726 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
727 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
728 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
729 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
730 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
731 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
733 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
734 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
735 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
736 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
737 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
738 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
739 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
740 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
741 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
742 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
743 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
744 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
750 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
751 struct snd_mixer_oss_slot *pslot,
754 struct slot *slot = pslot->private_data;
758 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
759 *active = (left || right) ? 1 : 0;
763 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
764 struct snd_mixer_oss_slot *pslot,
767 struct slot *slot = pslot->private_data;
771 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
772 *active = (left || right) ? 1 : 0;
776 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
777 struct snd_mixer_oss_slot *pslot,
780 struct slot *slot = pslot->private_data;
782 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
786 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
787 struct snd_mixer_oss_slot *pslot,
790 struct slot *slot = pslot->private_data;
792 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
796 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
798 struct snd_card *card = fmixer->card;
799 struct snd_mixer_oss *mixer = fmixer->mixer;
800 struct snd_kcontrol *kctl;
801 struct snd_mixer_oss_slot *pslot;
803 struct snd_ctl_elem_info *uinfo;
804 struct snd_ctl_elem_value *uctl;
807 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
808 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
809 if (uinfo == NULL || uctl == NULL) {
813 down_read(&card->controls_rwsem);
814 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
819 err = kctl->info(kctl, uinfo);
822 err = kctl->get(kctl, uctl);
825 for (idx = 0; idx < 32; idx++) {
826 if (!(mixer->mask_recsrc & (1 << idx)))
828 pslot = &mixer->slots[idx];
829 slot = pslot->private_data;
830 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
832 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
834 if (slot->capture_item == uctl->value.enumerated.item[0]) {
841 up_read(&card->controls_rwsem);
848 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
850 struct snd_card *card = fmixer->card;
851 struct snd_mixer_oss *mixer = fmixer->mixer;
852 struct snd_kcontrol *kctl;
853 struct snd_mixer_oss_slot *pslot;
854 struct slot *slot = NULL;
855 struct snd_ctl_elem_info *uinfo;
856 struct snd_ctl_elem_value *uctl;
860 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
861 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
862 if (uinfo == NULL || uctl == NULL) {
866 down_read(&card->controls_rwsem);
867 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
872 err = kctl->info(kctl, uinfo);
875 for (idx = 0; idx < 32; idx++) {
876 if (!(mixer->mask_recsrc & (1 << idx)))
878 pslot = &mixer->slots[idx];
879 slot = pslot->private_data;
880 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
882 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
884 if (idx == active_index)
890 for (idx = 0; idx < uinfo->count; idx++)
891 uctl->value.enumerated.item[idx] = slot->capture_item;
892 err = kctl->put(kctl, uctl);
894 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
897 up_read(&card->controls_rwsem);
904 struct snd_mixer_oss_assign_table {
910 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
912 struct snd_ctl_elem_info *info;
913 struct snd_kcontrol *kcontrol;
914 struct snd_card *card = mixer->card;
917 down_read(&card->controls_rwsem);
918 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
919 if (kcontrol == NULL) {
920 up_read(&card->controls_rwsem);
923 info = kmalloc(sizeof(*info), GFP_KERNEL);
925 up_read(&card->controls_rwsem);
928 err = kcontrol->info(kcontrol, info);
930 up_read(&card->controls_rwsem);
934 slot->numid[item] = kcontrol->id.numid;
935 up_read(&card->controls_rwsem);
936 if (info->count > slot->channels)
937 slot->channels = info->count;
938 slot->present |= 1 << item;
943 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
945 struct slot *p = chn->private_data;
947 if (p->allocated && p->assigned) {
948 kfree_const(p->assigned->name);
949 kfree_const(p->assigned);
955 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
957 int idx = rslot->number; /* remember this */
958 if (rslot->private_free)
959 rslot->private_free(rslot);
960 memset(rslot, 0, sizeof(*rslot));
964 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
965 snd_mixer_oss_build_input! */
966 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
967 const struct snd_mixer_oss_assign_table *ptr,
973 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
974 SNDRV_MIXER_OSS_ITEM_GLOBAL);
977 sprintf(str, "%s Switch", ptr->name);
978 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
979 SNDRV_MIXER_OSS_ITEM_GSWITCH);
982 sprintf(str, "%s Route", ptr->name);
983 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
984 SNDRV_MIXER_OSS_ITEM_GROUTE);
987 sprintf(str, "%s Volume", ptr->name);
988 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
989 SNDRV_MIXER_OSS_ITEM_GVOLUME);
992 sprintf(str, "%s Playback Switch", ptr->name);
993 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
994 SNDRV_MIXER_OSS_ITEM_PSWITCH);
997 sprintf(str, "%s Playback Route", ptr->name);
998 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
999 SNDRV_MIXER_OSS_ITEM_PROUTE);
1002 sprintf(str, "%s Playback Volume", ptr->name);
1003 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1004 SNDRV_MIXER_OSS_ITEM_PVOLUME);
1007 sprintf(str, "%s Capture Switch", ptr->name);
1008 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1009 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1012 sprintf(str, "%s Capture Route", ptr->name);
1013 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1014 SNDRV_MIXER_OSS_ITEM_CROUTE);
1017 sprintf(str, "%s Capture Volume", ptr->name);
1018 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1019 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1027 * build an OSS mixer element.
1028 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1029 * when replace_old = 1, the old entry is replaced with the new one.
1031 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer,
1032 const struct snd_mixer_oss_assign_table *ptr,
1033 int ptr_allocated, int replace_old)
1037 struct snd_kcontrol *kctl;
1038 struct snd_mixer_oss_slot *rslot;
1041 /* check if already assigned */
1042 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1045 memset(&slot, 0, sizeof(slot));
1046 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1047 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1049 down_read(&mixer->card->controls_rwsem);
1052 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
1054 struct snd_ctl_elem_info *uinfo;
1056 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1058 up_read(&mixer->card->controls_rwsem);
1062 if (kctl->info(kctl, uinfo)) {
1063 up_read(&mixer->card->controls_rwsem);
1067 strcpy(str, ptr->name);
1068 if (!strcmp(str, "Master"))
1070 if (!strcmp(str, "Master Mono"))
1071 strcpy(str, "Mix Mono");
1072 slot.capture_item = 0;
1073 if (!strcmp(uinfo->value.enumerated.name, str)) {
1074 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1076 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1077 uinfo->value.enumerated.item = slot.capture_item;
1078 if (kctl->info(kctl, uinfo)) {
1079 up_read(&mixer->card->controls_rwsem);
1083 if (!strcmp(uinfo->value.enumerated.name, str)) {
1084 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1091 up_read(&mixer->card->controls_rwsem);
1092 if (slot.present != 0) {
1093 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1097 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1098 pslot->assigned = ptr;
1099 pslot->allocated = ptr_allocated;
1100 rslot = &mixer->slots[ptr->oss_id];
1101 mixer_slot_clear(rslot);
1102 rslot->stereo = slot.channels > 1 ? 1 : 0;
1103 rslot->get_volume = snd_mixer_oss_get_volume1;
1104 rslot->put_volume = snd_mixer_oss_put_volume1;
1105 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1106 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1107 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1108 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1109 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1110 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1111 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1112 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1113 mixer->mask_recsrc |= 1 << ptr->oss_id;
1115 rslot->private_data = pslot;
1116 rslot->private_free = snd_mixer_oss_slot_free;
1122 #ifdef CONFIG_SND_PROC_FS
1125 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1126 static const char * const oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1144 MIXER_VOL(DIGITAL1),
1145 MIXER_VOL(DIGITAL2),
1146 MIXER_VOL(DIGITAL3),
1148 MIXER_VOL(PHONEOUT),
1158 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1159 struct snd_info_buffer *buffer)
1161 struct snd_mixer_oss *mixer = entry->private_data;
1164 mutex_lock(&mixer->reg_mutex);
1165 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1168 if (! oss_mixer_names[i])
1170 p = (struct slot *)mixer->slots[i].private_data;
1171 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1172 if (p && p->assigned)
1173 snd_iprintf(buffer, "\"%s\" %d\n",
1175 p->assigned->index);
1177 snd_iprintf(buffer, "\"\" 0\n");
1179 mutex_unlock(&mixer->reg_mutex);
1182 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1183 struct snd_info_buffer *buffer)
1185 struct snd_mixer_oss *mixer = entry->private_data;
1186 char line[128], str[32], idxstr[16];
1190 struct snd_mixer_oss_assign_table *tbl;
1193 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1194 cptr = snd_info_get_str(str, line, sizeof(str));
1195 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1196 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1198 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1199 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1203 cptr = snd_info_get_str(str, cptr, sizeof(str));
1205 /* remove the entry */
1206 mutex_lock(&mixer->reg_mutex);
1207 mixer_slot_clear(&mixer->slots[ch]);
1208 mutex_unlock(&mixer->reg_mutex);
1211 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1212 idx = simple_strtoul(idxstr, NULL, 10);
1213 if (idx >= 0x4000) { /* too big */
1214 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1217 mutex_lock(&mixer->reg_mutex);
1218 slot = (struct slot *)mixer->slots[ch].private_data;
1219 if (slot && slot->assigned &&
1220 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1223 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1227 tbl->name = kstrdup(str, GFP_KERNEL);
1233 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1238 mutex_unlock(&mixer->reg_mutex);
1242 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1244 struct snd_info_entry *entry;
1246 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1247 mixer->card->proc_root);
1250 entry->content = SNDRV_INFO_CONTENT_TEXT;
1251 entry->mode = S_IFREG | 0644;
1252 entry->c.text.read = snd_mixer_oss_proc_read;
1253 entry->c.text.write = snd_mixer_oss_proc_write;
1254 entry->private_data = mixer;
1255 if (snd_info_register(entry) < 0) {
1256 snd_info_free_entry(entry);
1259 mixer->proc_entry = entry;
1262 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1264 snd_info_free_entry(mixer->proc_entry);
1265 mixer->proc_entry = NULL;
1267 #else /* !CONFIG_SND_PROC_FS */
1268 #define snd_mixer_oss_proc_init(mix)
1269 #define snd_mixer_oss_proc_done(mix)
1270 #endif /* CONFIG_SND_PROC_FS */
1272 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1274 static const struct snd_mixer_oss_assign_table table[] = {
1275 { SOUND_MIXER_VOLUME, "Master", 0 },
1276 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1277 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1278 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1279 { SOUND_MIXER_SYNTH, "Synth", 0 },
1280 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1281 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1282 { SOUND_MIXER_PCM, "PCM", 0 },
1283 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1284 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1285 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1286 { SOUND_MIXER_LINE, "Line", 0 },
1287 { SOUND_MIXER_MIC, "Mic", 0 },
1288 { SOUND_MIXER_CD, "CD", 0 },
1289 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1290 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1291 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1292 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1293 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1294 { SOUND_MIXER_IGAIN, "Capture", 0 },
1295 { SOUND_MIXER_OGAIN, "Playback", 0 },
1296 { SOUND_MIXER_LINE1, "Aux", 0 },
1297 { SOUND_MIXER_LINE2, "Aux", 1 },
1298 { SOUND_MIXER_LINE3, "Aux", 2 },
1299 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1300 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1301 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1302 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1303 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1304 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1305 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1306 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1307 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1308 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1309 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1310 { SOUND_MIXER_VIDEO, "Video", 0 },
1311 { SOUND_MIXER_RADIO, "Radio", 0 },
1312 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1316 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1317 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1318 if (mixer->mask_recsrc) {
1319 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1320 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1328 static int snd_mixer_oss_free1(void *private)
1330 struct snd_mixer_oss *mixer = private;
1331 struct snd_card *card;
1337 if (snd_BUG_ON(mixer != card->mixer_oss))
1339 card->mixer_oss = NULL;
1340 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1341 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1342 if (chn->private_free)
1343 chn->private_free(chn);
1349 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1351 struct snd_mixer_oss *mixer;
1353 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1356 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1359 mutex_init(&mixer->reg_mutex);
1360 err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1362 &snd_mixer_oss_f_ops, card);
1365 "unable to register OSS mixer device %i:%i\n",
1370 mixer->oss_dev_alloc = 1;
1372 if (*card->mixername)
1373 strscpy(mixer->name, card->mixername, sizeof(mixer->name));
1375 snprintf(mixer->name, sizeof(mixer->name),
1376 "mixer%i", card->number);
1377 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1378 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1382 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1383 mixer->slots[idx].number = idx;
1384 card->mixer_oss = mixer;
1385 snd_mixer_oss_build(mixer);
1386 snd_mixer_oss_proc_init(mixer);
1388 mixer = card->mixer_oss;
1391 if (mixer->oss_dev_alloc) {
1392 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1393 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1395 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1396 mixer->oss_dev_alloc = 0;
1398 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1400 snd_mixer_oss_proc_done(mixer);
1401 return snd_mixer_oss_free1(mixer);
1406 static int __init alsa_mixer_oss_init(void)
1408 struct snd_card *card;
1411 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1412 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1413 card = snd_card_ref(idx);
1415 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1416 snd_card_unref(card);
1422 static void __exit alsa_mixer_oss_exit(void)
1424 struct snd_card *card;
1427 snd_mixer_oss_notify_callback = NULL;
1428 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1429 card = snd_card_ref(idx);
1431 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1432 snd_card_unref(card);
1437 module_init(alsa_mixer_oss_init)
1438 module_exit(alsa_mixer_oss_exit)