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 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
91 strlcpy(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 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
107 strlcpy(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 mutex_lock(&mixer->reg_mutex);
134 for (chn = 0; chn < 31; chn++) {
135 pslot = &mixer->slots[chn];
136 if (pslot->put_volume || pslot->put_recsrc)
139 mutex_unlock(&mixer->reg_mutex);
143 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
145 struct snd_mixer_oss *mixer = fmixer->mixer;
146 struct snd_mixer_oss_slot *pslot;
151 mutex_lock(&mixer->reg_mutex);
152 for (chn = 0; chn < 31; chn++) {
153 pslot = &mixer->slots[chn];
154 if (pslot->put_volume && pslot->stereo)
157 mutex_unlock(&mixer->reg_mutex);
161 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
163 struct snd_mixer_oss *mixer = fmixer->mixer;
168 mutex_lock(&mixer->reg_mutex);
169 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
170 result = mixer->mask_recsrc;
172 struct snd_mixer_oss_slot *pslot;
174 for (chn = 0; chn < 31; chn++) {
175 pslot = &mixer->slots[chn];
176 if (pslot->put_recsrc)
180 mutex_unlock(&mixer->reg_mutex);
184 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
186 struct snd_mixer_oss *mixer = fmixer->mixer;
191 mutex_lock(&mixer->reg_mutex);
192 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
194 result = mixer->get_recsrc(fmixer, &index);
199 struct snd_mixer_oss_slot *pslot;
201 for (chn = 0; chn < 31; chn++) {
202 pslot = &mixer->slots[chn];
203 if (pslot->get_recsrc) {
205 pslot->get_recsrc(fmixer, pslot, &active);
211 mixer->oss_recsrc = result;
213 mutex_unlock(&mixer->reg_mutex);
217 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
219 struct snd_mixer_oss *mixer = fmixer->mixer;
220 struct snd_mixer_oss_slot *pslot;
227 mutex_lock(&mixer->reg_mutex);
228 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
229 if (recsrc & ~mixer->oss_recsrc)
230 recsrc &= ~mixer->oss_recsrc;
231 mixer->put_recsrc(fmixer, ffz(~recsrc));
232 mixer->get_recsrc(fmixer, &index);
235 for (chn = 0; chn < 31; chn++) {
236 pslot = &mixer->slots[chn];
237 if (pslot->put_recsrc) {
238 active = (recsrc & (1 << chn)) ? 1 : 0;
239 pslot->put_recsrc(fmixer, pslot, active);
243 for (chn = 0; chn < 31; chn++) {
244 pslot = &mixer->slots[chn];
245 if (pslot->get_recsrc) {
247 pslot->get_recsrc(fmixer, pslot, &active);
253 mutex_unlock(&mixer->reg_mutex);
257 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
259 struct snd_mixer_oss *mixer = fmixer->mixer;
260 struct snd_mixer_oss_slot *pslot;
261 int result = 0, left, right;
263 if (mixer == NULL || slot > 30)
265 mutex_lock(&mixer->reg_mutex);
266 pslot = &mixer->slots[slot];
267 left = pslot->volume[0];
268 right = pslot->volume[1];
269 if (pslot->get_volume)
270 result = pslot->get_volume(fmixer, pslot, &left, &right);
273 if (snd_BUG_ON(left < 0 || left > 100)) {
277 if (snd_BUG_ON(right < 0 || right > 100)) {
282 pslot->volume[0] = left;
283 pslot->volume[1] = right;
284 result = (left & 0xff) | ((right & 0xff) << 8);
287 mutex_unlock(&mixer->reg_mutex);
291 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
292 int slot, int volume)
294 struct snd_mixer_oss *mixer = fmixer->mixer;
295 struct snd_mixer_oss_slot *pslot;
296 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
298 if (mixer == NULL || slot > 30)
300 mutex_lock(&mixer->reg_mutex);
301 pslot = &mixer->slots[slot];
308 if (pslot->put_volume)
309 result = pslot->put_volume(fmixer, pslot, left, right);
312 pslot->volume[0] = left;
313 pslot->volume[1] = right;
314 result = (left & 0xff) | ((right & 0xff) << 8);
316 mutex_unlock(&mixer->reg_mutex);
320 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
322 void __user *argp = (void __user *)arg;
323 int __user *p = argp;
326 if (snd_BUG_ON(!fmixer))
328 if (((cmd >> 8) & 0xff) == 'M') {
330 case SOUND_MIXER_INFO:
331 return snd_mixer_oss_info(fmixer, argp);
332 case SOUND_OLD_MIXER_INFO:
333 return snd_mixer_oss_info_obsolete(fmixer, argp);
334 case SOUND_MIXER_WRITE_RECSRC:
335 if (get_user(tmp, p))
337 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
340 return put_user(tmp, p);
342 return put_user(SNDRV_OSS_VERSION, p);
343 case OSS_ALSAEMULVER:
344 return put_user(1, p);
345 case SOUND_MIXER_READ_DEVMASK:
346 tmp = snd_mixer_oss_devmask(fmixer);
349 return put_user(tmp, p);
350 case SOUND_MIXER_READ_STEREODEVS:
351 tmp = snd_mixer_oss_stereodevs(fmixer);
354 return put_user(tmp, p);
355 case SOUND_MIXER_READ_RECMASK:
356 tmp = snd_mixer_oss_recmask(fmixer);
359 return put_user(tmp, p);
360 case SOUND_MIXER_READ_CAPS:
361 tmp = snd_mixer_oss_caps(fmixer);
364 return put_user(tmp, p);
365 case SOUND_MIXER_READ_RECSRC:
366 tmp = snd_mixer_oss_get_recsrc(fmixer);
369 return put_user(tmp, p);
373 if (get_user(tmp, p))
375 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
378 return put_user(tmp, p);
379 } else if (cmd & SIOC_OUT) {
380 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
383 return put_user(tmp, p);
388 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
390 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
393 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
395 struct snd_mixer_oss_file fmixer;
397 if (snd_BUG_ON(!card))
399 if (card->mixer_oss == NULL)
401 memset(&fmixer, 0, sizeof(fmixer));
403 fmixer.mixer = card->mixer_oss;
404 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
406 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
410 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
413 return snd_mixer_oss_ioctl1(file->private_data, cmd,
414 (unsigned long)compat_ptr(arg));
417 #define snd_mixer_oss_ioctl_compat NULL
424 static const struct file_operations snd_mixer_oss_f_ops =
426 .owner = THIS_MODULE,
427 .open = snd_mixer_oss_open,
428 .release = snd_mixer_oss_release,
430 .unlocked_ioctl = snd_mixer_oss_ioctl,
431 .compat_ioctl = snd_mixer_oss_ioctl_compat,
438 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
440 long orange = omax - omin, nrange = nmax - nmin;
444 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
447 /* convert from alsa native to oss values (0-100) */
448 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
450 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
452 return snd_mixer_oss_conv(val, min, max, 0, 100);
455 /* convert from oss to alsa native values */
456 static long snd_mixer_oss_conv2(long val, long min, long max)
458 return snd_mixer_oss_conv(val, 0, 100, min, max);
462 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
464 struct snd_mixer_oss *mixer = card->mixer_oss;
466 mixer->mask_recsrc |= 1 << slot;
469 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
471 struct snd_mixer_oss *mixer = card->mixer_oss;
472 if (mixer && (mixer->mask_recsrc & (1 << slot)))
478 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
480 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
481 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
482 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
483 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
484 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
485 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
486 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
487 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
488 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
489 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
490 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
492 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
494 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
495 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
496 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
497 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
498 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
499 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
500 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
501 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
502 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
503 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
504 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
507 unsigned int signature;
508 unsigned int present;
509 unsigned int channels;
510 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
511 unsigned int capture_item;
512 struct snd_mixer_oss_assign_table *assigned;
513 unsigned int allocated: 1;
516 #define ID_UNKNOWN ((unsigned int)-1)
518 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
520 struct snd_card *card = mixer->card;
521 struct snd_ctl_elem_id id;
523 memset(&id, 0, sizeof(id));
524 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
525 strlcpy(id.name, name, sizeof(id.name));
527 return snd_ctl_find_id(card, &id);
530 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
531 struct snd_mixer_oss_slot *pslot,
533 int *left, int *right)
535 struct snd_ctl_elem_info *uinfo;
536 struct snd_ctl_elem_value *uctl;
537 struct snd_kcontrol *kctl;
538 struct snd_card *card = fmixer->card;
540 if (numid == ID_UNKNOWN)
542 down_read(&card->controls_rwsem);
543 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
544 up_read(&card->controls_rwsem);
547 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
548 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
549 if (uinfo == NULL || uctl == NULL)
551 if (kctl->info(kctl, uinfo))
553 if (kctl->get(kctl, uctl))
555 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
556 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
558 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
559 if (uinfo->count > 1)
560 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
562 up_read(&card->controls_rwsem);
567 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
568 struct snd_mixer_oss_slot *pslot,
570 int *left, int *right,
573 struct snd_ctl_elem_info *uinfo;
574 struct snd_ctl_elem_value *uctl;
575 struct snd_kcontrol *kctl;
576 struct snd_card *card = fmixer->card;
578 if (numid == ID_UNKNOWN)
580 down_read(&card->controls_rwsem);
581 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
582 up_read(&card->controls_rwsem);
585 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
586 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
587 if (uinfo == NULL || uctl == NULL)
589 if (kctl->info(kctl, uinfo))
591 if (kctl->get(kctl, uctl))
593 if (!uctl->value.integer.value[0]) {
595 if (uinfo->count == 1)
598 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
601 up_read(&card->controls_rwsem);
606 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
607 struct snd_mixer_oss_slot *pslot,
608 int *left, int *right)
610 struct slot *slot = pslot->private_data;
612 *left = *right = 100;
613 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
614 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
615 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
616 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
617 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
618 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
620 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
621 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
622 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
623 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
624 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
625 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
626 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
627 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
632 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
633 struct snd_mixer_oss_slot *pslot,
637 struct snd_ctl_elem_info *uinfo;
638 struct snd_ctl_elem_value *uctl;
639 struct snd_kcontrol *kctl;
640 struct snd_card *card = fmixer->card;
643 if (numid == ID_UNKNOWN)
645 down_read(&card->controls_rwsem);
646 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
647 up_read(&card->controls_rwsem);
650 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
651 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
652 if (uinfo == NULL || uctl == NULL)
654 if (kctl->info(kctl, uinfo))
656 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
657 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
659 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
660 if (uinfo->count > 1)
661 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
662 if ((res = kctl->put(kctl, uctl)) < 0)
665 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
667 up_read(&card->controls_rwsem);
672 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
673 struct snd_mixer_oss_slot *pslot,
678 struct snd_ctl_elem_info *uinfo;
679 struct snd_ctl_elem_value *uctl;
680 struct snd_kcontrol *kctl;
681 struct snd_card *card = fmixer->card;
684 if (numid == ID_UNKNOWN)
686 down_read(&card->controls_rwsem);
687 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
688 up_read(&card->controls_rwsem);
691 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
692 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
693 if (uinfo == NULL || uctl == NULL)
695 if (kctl->info(kctl, uinfo))
697 if (uinfo->count > 1) {
698 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
699 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
701 uctl->value.integer.value[1] =
702 uctl->value.integer.value[2] = 0;
705 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
707 if ((res = kctl->put(kctl, uctl)) < 0)
710 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
712 up_read(&card->controls_rwsem);
717 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
718 struct snd_mixer_oss_slot *pslot,
721 struct slot *slot = pslot->private_data;
723 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
724 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
725 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
726 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
727 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
728 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
729 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
730 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
731 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
732 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
733 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
736 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
737 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
738 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
739 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
740 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
741 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
742 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
743 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
744 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
746 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
747 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
749 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
750 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
751 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
752 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
753 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
754 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
755 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
756 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
757 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
758 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
759 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
760 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
766 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
767 struct snd_mixer_oss_slot *pslot,
770 struct slot *slot = pslot->private_data;
774 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
775 *active = (left || right) ? 1 : 0;
779 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
780 struct snd_mixer_oss_slot *pslot,
783 struct slot *slot = pslot->private_data;
787 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
788 *active = (left || right) ? 1 : 0;
792 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
793 struct snd_mixer_oss_slot *pslot,
796 struct slot *slot = pslot->private_data;
798 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
802 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
803 struct snd_mixer_oss_slot *pslot,
806 struct slot *slot = pslot->private_data;
808 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
812 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
814 struct snd_card *card = fmixer->card;
815 struct snd_mixer_oss *mixer = fmixer->mixer;
816 struct snd_kcontrol *kctl;
817 struct snd_mixer_oss_slot *pslot;
819 struct snd_ctl_elem_info *uinfo;
820 struct snd_ctl_elem_value *uctl;
823 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
824 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
825 if (uinfo == NULL || uctl == NULL) {
829 down_read(&card->controls_rwsem);
830 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
835 if ((err = kctl->info(kctl, uinfo)) < 0)
837 if ((err = kctl->get(kctl, uctl)) < 0)
839 for (idx = 0; idx < 32; idx++) {
840 if (!(mixer->mask_recsrc & (1 << idx)))
842 pslot = &mixer->slots[idx];
843 slot = pslot->private_data;
844 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
846 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
848 if (slot->capture_item == uctl->value.enumerated.item[0]) {
855 up_read(&card->controls_rwsem);
862 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
864 struct snd_card *card = fmixer->card;
865 struct snd_mixer_oss *mixer = fmixer->mixer;
866 struct snd_kcontrol *kctl;
867 struct snd_mixer_oss_slot *pslot;
868 struct slot *slot = NULL;
869 struct snd_ctl_elem_info *uinfo;
870 struct snd_ctl_elem_value *uctl;
874 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
875 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
876 if (uinfo == NULL || uctl == NULL) {
880 down_read(&card->controls_rwsem);
881 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
886 if ((err = kctl->info(kctl, uinfo)) < 0)
888 for (idx = 0; idx < 32; idx++) {
889 if (!(mixer->mask_recsrc & (1 << idx)))
891 pslot = &mixer->slots[idx];
892 slot = pslot->private_data;
893 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
895 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
897 if (idx == active_index)
903 for (idx = 0; idx < uinfo->count; idx++)
904 uctl->value.enumerated.item[idx] = slot->capture_item;
905 err = kctl->put(kctl, uctl);
907 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
910 up_read(&card->controls_rwsem);
917 struct snd_mixer_oss_assign_table {
923 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
925 struct snd_ctl_elem_info *info;
926 struct snd_kcontrol *kcontrol;
927 struct snd_card *card = mixer->card;
930 down_read(&card->controls_rwsem);
931 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
932 if (kcontrol == NULL) {
933 up_read(&card->controls_rwsem);
936 info = kmalloc(sizeof(*info), GFP_KERNEL);
938 up_read(&card->controls_rwsem);
941 if ((err = kcontrol->info(kcontrol, info)) < 0) {
942 up_read(&card->controls_rwsem);
946 slot->numid[item] = kcontrol->id.numid;
947 up_read(&card->controls_rwsem);
948 if (info->count > slot->channels)
949 slot->channels = info->count;
950 slot->present |= 1 << item;
955 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
957 struct slot *p = chn->private_data;
959 if (p->allocated && p->assigned) {
960 kfree(p->assigned->name);
967 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
969 int idx = rslot->number; /* remember this */
970 if (rslot->private_free)
971 rslot->private_free(rslot);
972 memset(rslot, 0, sizeof(*rslot));
976 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
977 snd_mixer_oss_build_input! */
978 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
979 struct snd_mixer_oss_assign_table *ptr,
985 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
986 SNDRV_MIXER_OSS_ITEM_GLOBAL);
989 sprintf(str, "%s Switch", ptr->name);
990 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
991 SNDRV_MIXER_OSS_ITEM_GSWITCH);
994 sprintf(str, "%s Route", ptr->name);
995 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
996 SNDRV_MIXER_OSS_ITEM_GROUTE);
999 sprintf(str, "%s Volume", ptr->name);
1000 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1001 SNDRV_MIXER_OSS_ITEM_GVOLUME);
1004 sprintf(str, "%s Playback Switch", ptr->name);
1005 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1006 SNDRV_MIXER_OSS_ITEM_PSWITCH);
1009 sprintf(str, "%s Playback Route", ptr->name);
1010 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1011 SNDRV_MIXER_OSS_ITEM_PROUTE);
1014 sprintf(str, "%s Playback Volume", ptr->name);
1015 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1016 SNDRV_MIXER_OSS_ITEM_PVOLUME);
1019 sprintf(str, "%s Capture Switch", ptr->name);
1020 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1021 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1024 sprintf(str, "%s Capture Route", ptr->name);
1025 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1026 SNDRV_MIXER_OSS_ITEM_CROUTE);
1029 sprintf(str, "%s Capture Volume", ptr->name);
1030 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1031 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1039 * build an OSS mixer element.
1040 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1041 * when replace_old = 1, the old entry is replaced with the new one.
1043 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)
1047 struct snd_kcontrol *kctl;
1048 struct snd_mixer_oss_slot *rslot;
1051 /* check if already assigned */
1052 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1055 memset(&slot, 0, sizeof(slot));
1056 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1057 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1059 down_read(&mixer->card->controls_rwsem);
1060 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1061 struct snd_ctl_elem_info *uinfo;
1063 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1065 up_read(&mixer->card->controls_rwsem);
1069 if (kctl->info(kctl, uinfo)) {
1070 up_read(&mixer->card->controls_rwsem);
1074 strcpy(str, ptr->name);
1075 if (!strcmp(str, "Master"))
1077 if (!strcmp(str, "Master Mono"))
1078 strcpy(str, "Mix Mono");
1079 slot.capture_item = 0;
1080 if (!strcmp(uinfo->value.enumerated.name, str)) {
1081 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1083 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1084 uinfo->value.enumerated.item = slot.capture_item;
1085 if (kctl->info(kctl, uinfo)) {
1086 up_read(&mixer->card->controls_rwsem);
1090 if (!strcmp(uinfo->value.enumerated.name, str)) {
1091 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1098 up_read(&mixer->card->controls_rwsem);
1099 if (slot.present != 0) {
1100 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1104 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1105 pslot->assigned = ptr;
1106 pslot->allocated = ptr_allocated;
1107 rslot = &mixer->slots[ptr->oss_id];
1108 mixer_slot_clear(rslot);
1109 rslot->stereo = slot.channels > 1 ? 1 : 0;
1110 rslot->get_volume = snd_mixer_oss_get_volume1;
1111 rslot->put_volume = snd_mixer_oss_put_volume1;
1112 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1113 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1114 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1115 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1116 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1117 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1118 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1119 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1120 mixer->mask_recsrc |= 1 << ptr->oss_id;
1122 rslot->private_data = pslot;
1123 rslot->private_free = snd_mixer_oss_slot_free;
1129 #ifdef CONFIG_SND_PROC_FS
1132 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1133 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1151 MIXER_VOL(DIGITAL1),
1152 MIXER_VOL(DIGITAL2),
1153 MIXER_VOL(DIGITAL3),
1155 MIXER_VOL(PHONEOUT),
1165 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1166 struct snd_info_buffer *buffer)
1168 struct snd_mixer_oss *mixer = entry->private_data;
1171 mutex_lock(&mixer->reg_mutex);
1172 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1175 if (! oss_mixer_names[i])
1177 p = (struct slot *)mixer->slots[i].private_data;
1178 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1179 if (p && p->assigned)
1180 snd_iprintf(buffer, "\"%s\" %d\n",
1182 p->assigned->index);
1184 snd_iprintf(buffer, "\"\" 0\n");
1186 mutex_unlock(&mixer->reg_mutex);
1189 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1190 struct snd_info_buffer *buffer)
1192 struct snd_mixer_oss *mixer = entry->private_data;
1193 char line[128], str[32], idxstr[16];
1197 struct snd_mixer_oss_assign_table *tbl;
1200 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1201 cptr = snd_info_get_str(str, line, sizeof(str));
1202 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1203 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1205 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1206 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1210 cptr = snd_info_get_str(str, cptr, sizeof(str));
1212 /* remove the entry */
1213 mutex_lock(&mixer->reg_mutex);
1214 mixer_slot_clear(&mixer->slots[ch]);
1215 mutex_unlock(&mixer->reg_mutex);
1218 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1219 idx = simple_strtoul(idxstr, NULL, 10);
1220 if (idx >= 0x4000) { /* too big */
1221 pr_err("ALSA: mixer_oss: invalid index %d\n", idx);
1224 mutex_lock(&mixer->reg_mutex);
1225 slot = (struct slot *)mixer->slots[ch].private_data;
1226 if (slot && slot->assigned &&
1227 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1230 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1234 tbl->name = kstrdup(str, GFP_KERNEL);
1240 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1245 mutex_unlock(&mixer->reg_mutex);
1249 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1251 struct snd_info_entry *entry;
1253 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1254 mixer->card->proc_root);
1257 entry->content = SNDRV_INFO_CONTENT_TEXT;
1258 entry->mode = S_IFREG | 0644;
1259 entry->c.text.read = snd_mixer_oss_proc_read;
1260 entry->c.text.write = snd_mixer_oss_proc_write;
1261 entry->private_data = mixer;
1262 if (snd_info_register(entry) < 0) {
1263 snd_info_free_entry(entry);
1266 mixer->proc_entry = entry;
1269 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1271 snd_info_free_entry(mixer->proc_entry);
1272 mixer->proc_entry = NULL;
1274 #else /* !CONFIG_SND_PROC_FS */
1275 #define snd_mixer_oss_proc_init(mix)
1276 #define snd_mixer_oss_proc_done(mix)
1277 #endif /* CONFIG_SND_PROC_FS */
1279 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1281 static struct snd_mixer_oss_assign_table table[] = {
1282 { SOUND_MIXER_VOLUME, "Master", 0 },
1283 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1284 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1285 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1286 { SOUND_MIXER_SYNTH, "Synth", 0 },
1287 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1288 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1289 { SOUND_MIXER_PCM, "PCM", 0 },
1290 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1291 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
1292 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1293 { SOUND_MIXER_LINE, "Line", 0 },
1294 { SOUND_MIXER_MIC, "Mic", 0 },
1295 { SOUND_MIXER_CD, "CD", 0 },
1296 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1297 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1298 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1299 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1300 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1301 { SOUND_MIXER_IGAIN, "Capture", 0 },
1302 { SOUND_MIXER_OGAIN, "Playback", 0 },
1303 { SOUND_MIXER_LINE1, "Aux", 0 },
1304 { SOUND_MIXER_LINE2, "Aux", 1 },
1305 { SOUND_MIXER_LINE3, "Aux", 2 },
1306 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1307 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1308 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1309 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1310 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1311 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1312 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1313 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1314 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1315 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1316 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1317 { SOUND_MIXER_VIDEO, "Video", 0 },
1318 { SOUND_MIXER_RADIO, "Radio", 0 },
1319 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1323 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1324 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1325 if (mixer->mask_recsrc) {
1326 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1327 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1335 static int snd_mixer_oss_free1(void *private)
1337 struct snd_mixer_oss *mixer = private;
1338 struct snd_card *card;
1344 if (snd_BUG_ON(mixer != card->mixer_oss))
1346 card->mixer_oss = NULL;
1347 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1348 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1349 if (chn->private_free)
1350 chn->private_free(chn);
1356 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1358 struct snd_mixer_oss *mixer;
1360 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1363 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1366 mutex_init(&mixer->reg_mutex);
1367 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1369 &snd_mixer_oss_f_ops, card)) < 0) {
1371 "unable to register OSS mixer device %i:%i\n",
1376 mixer->oss_dev_alloc = 1;
1378 if (*card->mixername)
1379 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1381 snprintf(mixer->name, sizeof(mixer->name),
1382 "mixer%i", card->number);
1383 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1384 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1388 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1389 mixer->slots[idx].number = idx;
1390 card->mixer_oss = mixer;
1391 snd_mixer_oss_build(mixer);
1392 snd_mixer_oss_proc_init(mixer);
1394 mixer = card->mixer_oss;
1397 if (mixer->oss_dev_alloc) {
1398 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1399 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1401 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1402 mixer->oss_dev_alloc = 0;
1404 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1406 snd_mixer_oss_proc_done(mixer);
1407 return snd_mixer_oss_free1(mixer);
1412 static int __init alsa_mixer_oss_init(void)
1414 struct snd_card *card;
1417 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1418 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1419 card = snd_card_ref(idx);
1421 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1422 snd_card_unref(card);
1428 static void __exit alsa_mixer_oss_exit(void)
1430 struct snd_card *card;
1433 snd_mixer_oss_notify_callback = NULL;
1434 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1435 card = snd_card_ref(idx);
1437 snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1438 snd_card_unref(card);
1443 module_init(alsa_mixer_oss_init)
1444 module_exit(alsa_mixer_oss_exit)