26502294f7d8c74b0ddb0cb2b180bb8efce847ac
[muen/linux.git] / sound / core / oss / mixer_oss.c
1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  *  OSS emulation layer for the mixer interface
4  *  Copyright (c) by Jaroslav Kysela <perex@perex.cz>
5  */
6
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>
19
20 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
21
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);
26
27 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
28 {
29         struct snd_card *card;
30         struct snd_mixer_oss_file *fmixer;
31         int err;
32
33         err = nonseekable_open(inode, file);
34         if (err < 0)
35                 return err;
36
37         card = snd_lookup_oss_minor_data(iminor(inode),
38                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
39         if (card == NULL)
40                 return -ENODEV;
41         if (card->mixer_oss == NULL) {
42                 snd_card_unref(card);
43                 return -ENODEV;
44         }
45         err = snd_card_file_add(card, file);
46         if (err < 0) {
47                 snd_card_unref(card);
48                 return err;
49         }
50         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
51         if (fmixer == NULL) {
52                 snd_card_file_remove(card, file);
53                 snd_card_unref(card);
54                 return -ENOMEM;
55         }
56         fmixer->card = card;
57         fmixer->mixer = card->mixer_oss;
58         file->private_data = fmixer;
59         if (!try_module_get(card->module)) {
60                 kfree(fmixer);
61                 snd_card_file_remove(card, file);
62                 snd_card_unref(card);
63                 return -EFAULT;
64         }
65         snd_card_unref(card);
66         return 0;
67 }
68
69 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
70 {
71         struct snd_mixer_oss_file *fmixer;
72
73         if (file->private_data) {
74                 fmixer = file->private_data;
75                 module_put(fmixer->card->module);
76                 snd_card_file_remove(fmixer->card, file);
77                 kfree(fmixer);
78         }
79         return 0;
80 }
81
82 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
83                               mixer_info __user *_info)
84 {
85         struct snd_card *card = fmixer->card;
86         struct snd_mixer_oss *mixer = fmixer->mixer;
87         struct mixer_info info;
88         
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)))
94                 return -EFAULT;
95         return 0;
96 }
97
98 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
99                                        _old_mixer_info __user *_info)
100 {
101         struct snd_card *card = fmixer->card;
102         struct snd_mixer_oss *mixer = fmixer->mixer;
103         _old_mixer_info info;
104         
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)))
109                 return -EFAULT;
110         return 0;
111 }
112
113 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
114 {
115         struct snd_mixer_oss *mixer = fmixer->mixer;
116         int result = 0;
117
118         if (mixer == NULL)
119                 return -EIO;
120         if (mixer->get_recsrc && mixer->put_recsrc)
121                 result |= SOUND_CAP_EXCL_INPUT;
122         return result;
123 }
124
125 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
126 {
127         struct snd_mixer_oss *mixer = fmixer->mixer;
128         struct snd_mixer_oss_slot *pslot;
129         int result = 0, chn;
130
131         if (mixer == NULL)
132                 return -EIO;
133         for (chn = 0; chn < 31; chn++) {
134                 pslot = &mixer->slots[chn];
135                 if (pslot->put_volume || pslot->put_recsrc)
136                         result |= 1 << chn;
137         }
138         return result;
139 }
140
141 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
142 {
143         struct snd_mixer_oss *mixer = fmixer->mixer;
144         struct snd_mixer_oss_slot *pslot;
145         int result = 0, chn;
146
147         if (mixer == NULL)
148                 return -EIO;
149         for (chn = 0; chn < 31; chn++) {
150                 pslot = &mixer->slots[chn];
151                 if (pslot->put_volume && pslot->stereo)
152                         result |= 1 << chn;
153         }
154         return result;
155 }
156
157 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
158 {
159         struct snd_mixer_oss *mixer = fmixer->mixer;
160         int result = 0;
161
162         if (mixer == NULL)
163                 return -EIO;
164         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
165                 result = mixer->mask_recsrc;
166         } else {
167                 struct snd_mixer_oss_slot *pslot;
168                 int chn;
169                 for (chn = 0; chn < 31; chn++) {
170                         pslot = &mixer->slots[chn];
171                         if (pslot->put_recsrc)
172                                 result |= 1 << chn;
173                 }
174         }
175         return result;
176 }
177
178 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
179 {
180         struct snd_mixer_oss *mixer = fmixer->mixer;
181         int result = 0;
182
183         if (mixer == NULL)
184                 return -EIO;
185         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
186                 int err;
187                 unsigned int index;
188                 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
189                         return err;
190                 result = 1 << index;
191         } else {
192                 struct snd_mixer_oss_slot *pslot;
193                 int chn;
194                 for (chn = 0; chn < 31; chn++) {
195                         pslot = &mixer->slots[chn];
196                         if (pslot->get_recsrc) {
197                                 int active = 0;
198                                 pslot->get_recsrc(fmixer, pslot, &active);
199                                 if (active)
200                                         result |= 1 << chn;
201                         }
202                 }
203         }
204         return mixer->oss_recsrc = result;
205 }
206
207 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
208 {
209         struct snd_mixer_oss *mixer = fmixer->mixer;
210         struct snd_mixer_oss_slot *pslot;
211         int chn, active;
212         unsigned int index;
213         int result = 0;
214
215         if (mixer == NULL)
216                 return -EIO;
217         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
218                 if (recsrc & ~mixer->oss_recsrc)
219                         recsrc &= ~mixer->oss_recsrc;
220                 mixer->put_recsrc(fmixer, ffz(~recsrc));
221                 mixer->get_recsrc(fmixer, &index);
222                 result = 1 << index;
223         }
224         for (chn = 0; chn < 31; chn++) {
225                 pslot = &mixer->slots[chn];
226                 if (pslot->put_recsrc) {
227                         active = (recsrc & (1 << chn)) ? 1 : 0;
228                         pslot->put_recsrc(fmixer, pslot, active);
229                 }
230         }
231         if (! result) {
232                 for (chn = 0; chn < 31; chn++) {
233                         pslot = &mixer->slots[chn];
234                         if (pslot->get_recsrc) {
235                                 active = 0;
236                                 pslot->get_recsrc(fmixer, pslot, &active);
237                                 if (active)
238                                         result |= 1 << chn;
239                         }
240                 }
241         }
242         return result;
243 }
244
245 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
246 {
247         struct snd_mixer_oss *mixer = fmixer->mixer;
248         struct snd_mixer_oss_slot *pslot;
249         int result = 0, left, right;
250
251         if (mixer == NULL || slot > 30)
252                 return -EIO;
253         pslot = &mixer->slots[slot];
254         left = pslot->volume[0];
255         right = pslot->volume[1];
256         if (pslot->get_volume)
257                 result = pslot->get_volume(fmixer, pslot, &left, &right);
258         if (!pslot->stereo)
259                 right = left;
260         if (snd_BUG_ON(left < 0 || left > 100))
261                 return -EIO;
262         if (snd_BUG_ON(right < 0 || right > 100))
263                 return -EIO;
264         if (result >= 0) {
265                 pslot->volume[0] = left;
266                 pslot->volume[1] = right;
267                 result = (left & 0xff) | ((right & 0xff) << 8);
268         }
269         return result;
270 }
271
272 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
273                                     int slot, int volume)
274 {
275         struct snd_mixer_oss *mixer = fmixer->mixer;
276         struct snd_mixer_oss_slot *pslot;
277         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
278
279         if (mixer == NULL || slot > 30)
280                 return -EIO;
281         pslot = &mixer->slots[slot];
282         if (left > 100)
283                 left = 100;
284         if (right > 100)
285                 right = 100;
286         if (!pslot->stereo)
287                 right = left;
288         if (pslot->put_volume)
289                 result = pslot->put_volume(fmixer, pslot, left, right);
290         if (result < 0)
291                 return result;
292         pslot->volume[0] = left;
293         pslot->volume[1] = right;
294         return (left & 0xff) | ((right & 0xff) << 8);
295 }
296
297 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
298 {
299         void __user *argp = (void __user *)arg;
300         int __user *p = argp;
301         int tmp;
302
303         if (snd_BUG_ON(!fmixer))
304                 return -ENXIO;
305         if (((cmd >> 8) & 0xff) == 'M') {
306                 switch (cmd) {
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))
313                                 return -EFAULT;
314                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
315                         if (tmp < 0)
316                                 return tmp;
317                         return put_user(tmp, p);
318                 case OSS_GETVERSION:
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);
324                         if (tmp < 0)
325                                 return tmp;
326                         return put_user(tmp, p);
327                 case SOUND_MIXER_READ_STEREODEVS:
328                         tmp = snd_mixer_oss_stereodevs(fmixer);
329                         if (tmp < 0)
330                                 return tmp;
331                         return put_user(tmp, p);
332                 case SOUND_MIXER_READ_RECMASK:
333                         tmp = snd_mixer_oss_recmask(fmixer);
334                         if (tmp < 0)
335                                 return tmp;
336                         return put_user(tmp, p);
337                 case SOUND_MIXER_READ_CAPS:
338                         tmp = snd_mixer_oss_caps(fmixer);
339                         if (tmp < 0)
340                                 return tmp;
341                         return put_user(tmp, p);
342                 case SOUND_MIXER_READ_RECSRC:
343                         tmp = snd_mixer_oss_get_recsrc(fmixer);
344                         if (tmp < 0)
345                                 return tmp;
346                         return put_user(tmp, p);
347                 }
348         }
349         if (cmd & SIOC_IN) {
350                 if (get_user(tmp, p))
351                         return -EFAULT;
352                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
353                 if (tmp < 0)
354                         return tmp;
355                 return put_user(tmp, p);
356         } else if (cmd & SIOC_OUT) {
357                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
358                 if (tmp < 0)
359                         return tmp;
360                 return put_user(tmp, p);
361         }
362         return -ENXIO;
363 }
364
365 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
366 {
367         return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
368 }
369
370 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
371 {
372         struct snd_mixer_oss_file fmixer;
373         
374         if (snd_BUG_ON(!card))
375                 return -ENXIO;
376         if (card->mixer_oss == NULL)
377                 return -ENXIO;
378         memset(&fmixer, 0, sizeof(fmixer));
379         fmixer.card = card;
380         fmixer.mixer = card->mixer_oss;
381         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
382 }
383 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
384
385 #ifdef CONFIG_COMPAT
386 /* all compatible */
387 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd,
388                                        unsigned long arg)
389 {
390         return snd_mixer_oss_ioctl1(file->private_data, cmd,
391                                     (unsigned long)compat_ptr(arg));
392 }
393 #else
394 #define snd_mixer_oss_ioctl_compat      NULL
395 #endif
396
397 /*
398  *  REGISTRATION PART
399  */
400
401 static const struct file_operations snd_mixer_oss_f_ops =
402 {
403         .owner =        THIS_MODULE,
404         .open =         snd_mixer_oss_open,
405         .release =      snd_mixer_oss_release,
406         .llseek =       no_llseek,
407         .unlocked_ioctl =       snd_mixer_oss_ioctl,
408         .compat_ioctl = snd_mixer_oss_ioctl_compat,
409 };
410
411 /*
412  *  utilities
413  */
414
415 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
416 {
417         long orange = omax - omin, nrange = nmax - nmin;
418         
419         if (orange == 0)
420                 return 0;
421         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
422 }
423
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)
426 {
427         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
428                 return *old;
429         return snd_mixer_oss_conv(val, min, max, 0, 100);
430 }
431
432 /* convert from oss to alsa native values */
433 static long snd_mixer_oss_conv2(long val, long min, long max)
434 {
435         return snd_mixer_oss_conv(val, 0, 100, min, max);
436 }
437
438 #if 0
439 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
440 {
441         struct snd_mixer_oss *mixer = card->mixer_oss;
442         if (mixer)
443                 mixer->mask_recsrc |= 1 << slot;
444 }
445
446 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
447 {
448         struct snd_mixer_oss *mixer = card->mixer_oss;
449         if (mixer && (mixer->mask_recsrc & (1 << slot)))
450                 return 1;
451         return 0;
452 }
453 #endif
454
455 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
456
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
468
469 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
470
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)
482
483 struct slot {
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;
491 };
492
493 #define ID_UNKNOWN      ((unsigned int)-1)
494
495 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
496 {
497         struct snd_card *card = mixer->card;
498         struct snd_ctl_elem_id id;
499         
500         memset(&id, 0, sizeof(id));
501         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
502         strlcpy(id.name, name, sizeof(id.name));
503         id.index = index;
504         return snd_ctl_find_id(card, &id);
505 }
506
507 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
508                                           struct snd_mixer_oss_slot *pslot,
509                                           unsigned int numid,
510                                           int *left, int *right)
511 {
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;
516
517         if (numid == ID_UNKNOWN)
518                 return;
519         down_read(&card->controls_rwsem);
520         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
521                 up_read(&card->controls_rwsem);
522                 return;
523         }
524         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
525         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
526         if (uinfo == NULL || uctl == NULL)
527                 goto __unalloc;
528         if (kctl->info(kctl, uinfo))
529                 goto __unalloc;
530         if (kctl->get(kctl, uctl))
531                 goto __unalloc;
532         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
533             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
534                 goto __unalloc;
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]);
538       __unalloc:
539         up_read(&card->controls_rwsem);
540         kfree(uctl);
541         kfree(uinfo);
542 }
543
544 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
545                                          struct snd_mixer_oss_slot *pslot,
546                                          unsigned int numid,
547                                          int *left, int *right,
548                                          int route)
549 {
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;
554
555         if (numid == ID_UNKNOWN)
556                 return;
557         down_read(&card->controls_rwsem);
558         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
559                 up_read(&card->controls_rwsem);
560                 return;
561         }
562         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
563         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
564         if (uinfo == NULL || uctl == NULL)
565                 goto __unalloc;
566         if (kctl->info(kctl, uinfo))
567                 goto __unalloc;
568         if (kctl->get(kctl, uctl))
569                 goto __unalloc;
570         if (!uctl->value.integer.value[0]) {
571                 *left = 0;
572                 if (uinfo->count == 1)
573                         *right = 0;
574         }
575         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
576                 *right = 0;
577       __unalloc:
578         up_read(&card->controls_rwsem);
579         kfree(uctl);
580         kfree(uinfo);
581 }
582
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)
586 {
587         struct slot *slot = pslot->private_data;
588         
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);
596         }
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);
605         }
606         return 0;
607 }
608
609 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
610                                           struct snd_mixer_oss_slot *pslot,
611                                           unsigned int numid,
612                                           int left, int right)
613 {
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;
618         int res;
619
620         if (numid == ID_UNKNOWN)
621                 return;
622         down_read(&card->controls_rwsem);
623         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
624                 up_read(&card->controls_rwsem);
625                 return;
626         }
627         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
628         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
629         if (uinfo == NULL || uctl == NULL)
630                 goto __unalloc;
631         if (kctl->info(kctl, uinfo))
632                 goto __unalloc;
633         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
634             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
635                 goto __unalloc;
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)
640                 goto __unalloc;
641         if (res > 0)
642                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
643       __unalloc:
644         up_read(&card->controls_rwsem);
645         kfree(uctl);
646         kfree(uinfo);
647 }
648
649 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
650                                          struct snd_mixer_oss_slot *pslot,
651                                          unsigned int numid,
652                                          int left, int right,
653                                          int route)
654 {
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;
659         int res;
660
661         if (numid == ID_UNKNOWN)
662                 return;
663         down_read(&card->controls_rwsem);
664         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
665                 up_read(&card->controls_rwsem);
666                 return;
667         }
668         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
669         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
670         if (uinfo == NULL || uctl == NULL)
671                 goto __unalloc;
672         if (kctl->info(kctl, uinfo))
673                 goto __unalloc;
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;
677                 if (route) {
678                         uctl->value.integer.value[1] =
679                         uctl->value.integer.value[2] = 0;
680                 }
681         } else {
682                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
683         }
684         if ((res = kctl->put(kctl, uctl)) < 0)
685                 goto __unalloc;
686         if (res > 0)
687                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
688       __unalloc:
689         up_read(&card->controls_rwsem);
690         kfree(uctl);
691         kfree(uinfo);
692 }
693
694 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
695                                      struct snd_mixer_oss_slot *pslot,
696                                      int left, int right)
697 {
698         struct slot *slot = pslot->private_data;
699         
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);
711         }
712         if (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);
725         } else {
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);
738                 }
739         }
740         return 0;
741 }
742
743 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
744                                         struct snd_mixer_oss_slot *pslot,
745                                         int *active)
746 {
747         struct slot *slot = pslot->private_data;
748         int left, right;
749         
750         left = right = 1;
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;
753         return 0;
754 }
755
756 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
757                                            struct snd_mixer_oss_slot *pslot,
758                                            int *active)
759 {
760         struct slot *slot = pslot->private_data;
761         int left, right;
762         
763         left = right = 1;
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;
766         return 0;
767 }
768
769 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
770                                         struct snd_mixer_oss_slot *pslot,
771                                         int active)
772 {
773         struct slot *slot = pslot->private_data;
774         
775         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
776         return 0;
777 }
778
779 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
780                                            struct snd_mixer_oss_slot *pslot,
781                                            int active)
782 {
783         struct slot *slot = pslot->private_data;
784         
785         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
786         return 0;
787 }
788
789 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
790 {
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;
795         struct slot *slot;
796         struct snd_ctl_elem_info *uinfo;
797         struct snd_ctl_elem_value *uctl;
798         int err, idx;
799         
800         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
801         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
802         if (uinfo == NULL || uctl == NULL) {
803                 err = -ENOMEM;
804                 goto __free_only;
805         }
806         down_read(&card->controls_rwsem);
807         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
808         if (! kctl) {
809                 err = -ENOENT;
810                 goto __unlock;
811         }
812         if ((err = kctl->info(kctl, uinfo)) < 0)
813                 goto __unlock;
814         if ((err = kctl->get(kctl, uctl)) < 0)
815                 goto __unlock;
816         for (idx = 0; idx < 32; idx++) {
817                 if (!(mixer->mask_recsrc & (1 << idx)))
818                         continue;
819                 pslot = &mixer->slots[idx];
820                 slot = pslot->private_data;
821                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
822                         continue;
823                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
824                         continue;
825                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
826                         *active_index = idx;
827                         break;
828                 }
829         }
830         err = 0;
831       __unlock:
832         up_read(&card->controls_rwsem);
833       __free_only:
834         kfree(uctl);
835         kfree(uinfo);
836         return err;
837 }
838
839 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
840 {
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;
848         int err;
849         unsigned int idx;
850
851         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
852         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
853         if (uinfo == NULL || uctl == NULL) {
854                 err = -ENOMEM;
855                 goto __free_only;
856         }
857         down_read(&card->controls_rwsem);
858         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
859         if (! kctl) {
860                 err = -ENOENT;
861                 goto __unlock;
862         }
863         if ((err = kctl->info(kctl, uinfo)) < 0)
864                 goto __unlock;
865         for (idx = 0; idx < 32; idx++) {
866                 if (!(mixer->mask_recsrc & (1 << idx)))
867                         continue;
868                 pslot = &mixer->slots[idx];
869                 slot = pslot->private_data;
870                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
871                         continue;
872                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
873                         continue;
874                 if (idx == active_index)
875                         break;
876                 slot = NULL;
877         }
878         if (! slot)
879                 goto __unlock;
880         for (idx = 0; idx < uinfo->count; idx++)
881                 uctl->value.enumerated.item[idx] = slot->capture_item;
882         err = kctl->put(kctl, uctl);
883         if (err > 0)
884                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
885         err = 0;
886       __unlock:
887         up_read(&card->controls_rwsem);
888       __free_only:
889         kfree(uctl);
890         kfree(uinfo);
891         return err;
892 }
893
894 struct snd_mixer_oss_assign_table {
895         int oss_id;
896         const char *name;
897         int index;
898 };
899
900 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
901 {
902         struct snd_ctl_elem_info *info;
903         struct snd_kcontrol *kcontrol;
904         struct snd_card *card = mixer->card;
905         int err;
906
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);
911                 return 0;
912         }
913         info = kmalloc(sizeof(*info), GFP_KERNEL);
914         if (! info) {
915                 up_read(&card->controls_rwsem);
916                 return -ENOMEM;
917         }
918         if ((err = kcontrol->info(kcontrol, info)) < 0) {
919                 up_read(&card->controls_rwsem);
920                 kfree(info);
921                 return err;
922         }
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;
928         kfree(info);
929         return 0;
930 }
931
932 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
933 {
934         struct slot *p = chn->private_data;
935         if (p) {
936                 if (p->allocated && p->assigned) {
937                         kfree_const(p->assigned->name);
938                         kfree_const(p->assigned);
939                 }
940                 kfree(p);
941         }
942 }
943
944 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
945 {
946         int idx = rslot->number; /* remember this */
947         if (rslot->private_free)
948                 rslot->private_free(rslot);
949         memset(rslot, 0, sizeof(*rslot));
950         rslot->number = idx;
951 }
952
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,
957                                         struct slot *slot)
958 {
959         char str[64];
960         int err;
961
962         err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
963                                        SNDRV_MIXER_OSS_ITEM_GLOBAL);
964         if (err)
965                 return err;
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);
969         if (err)
970                 return err;
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);
974         if (err)
975                 return err;
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);
979         if (err)
980                 return err;
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);
984         if (err)
985                 return err;
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);
989         if (err)
990                 return err;
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);
994         if (err)
995                 return err;
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);
999         if (err)
1000                 return err;
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);
1004         if (err)
1005                 return err;
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);
1009         if (err)
1010                 return err;
1011
1012         return 0;
1013 }
1014
1015 /*
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.
1019  */
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)
1023 {
1024         struct slot slot;
1025         struct slot *pslot;
1026         struct snd_kcontrol *kctl;
1027         struct snd_mixer_oss_slot *rslot;
1028         char str[64];   
1029         
1030         /* check if already assigned */
1031         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1032                 return 0;
1033
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))
1037                 return 0;
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;
1041
1042                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1043                 if (! uinfo) {
1044                         up_read(&mixer->card->controls_rwsem);
1045                         return -ENOMEM;
1046                 }
1047                         
1048                 if (kctl->info(kctl, uinfo)) {
1049                         up_read(&mixer->card->controls_rwsem);
1050                         kfree(uinfo);
1051                         return 0;
1052                 }
1053                 strcpy(str, ptr->name);
1054                 if (!strcmp(str, "Master"))
1055                         strcpy(str, "Mix");
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;
1061                 } else {
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);
1066                                         kfree(uinfo);
1067                                         return 0;
1068                                 }
1069                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1070                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1071                                         break;
1072                                 }
1073                         }
1074                 }
1075                 kfree(uinfo);
1076         }
1077         up_read(&mixer->card->controls_rwsem);
1078         if (slot.present != 0) {
1079                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1080                 if (! pslot)
1081                         return -ENOMEM;
1082                 *pslot = slot;
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;
1100                 }
1101                 rslot->private_data = pslot;
1102                 rslot->private_free = snd_mixer_oss_slot_free;
1103                 return 1;
1104         }
1105         return 0;
1106 }
1107
1108 #ifdef CONFIG_SND_PROC_FS
1109 /*
1110  */
1111 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1112 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1113         MIXER_VOL(VOLUME),
1114         MIXER_VOL(BASS),
1115         MIXER_VOL(TREBLE),
1116         MIXER_VOL(SYNTH),
1117         MIXER_VOL(PCM),
1118         MIXER_VOL(SPEAKER),
1119         MIXER_VOL(LINE),
1120         MIXER_VOL(MIC),
1121         MIXER_VOL(CD),
1122         MIXER_VOL(IMIX),
1123         MIXER_VOL(ALTPCM),
1124         MIXER_VOL(RECLEV),
1125         MIXER_VOL(IGAIN),
1126         MIXER_VOL(OGAIN),
1127         MIXER_VOL(LINE1),
1128         MIXER_VOL(LINE2),
1129         MIXER_VOL(LINE3),
1130         MIXER_VOL(DIGITAL1),
1131         MIXER_VOL(DIGITAL2),
1132         MIXER_VOL(DIGITAL3),
1133         MIXER_VOL(PHONEIN),
1134         MIXER_VOL(PHONEOUT),
1135         MIXER_VOL(VIDEO),
1136         MIXER_VOL(RADIO),
1137         MIXER_VOL(MONITOR),
1138 };
1139         
1140 /*
1141  *  /proc interface
1142  */
1143
1144 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1145                                     struct snd_info_buffer *buffer)
1146 {
1147         struct snd_mixer_oss *mixer = entry->private_data;
1148         int i;
1149
1150         mutex_lock(&mixer->reg_mutex);
1151         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1152                 struct slot *p;
1153
1154                 if (! oss_mixer_names[i])
1155                         continue;
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",
1160                                     p->assigned->name,
1161                                     p->assigned->index);
1162                 else
1163                         snd_iprintf(buffer, "\"\" 0\n");
1164         }
1165         mutex_unlock(&mixer->reg_mutex);
1166 }
1167
1168 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1169                                      struct snd_info_buffer *buffer)
1170 {
1171         struct snd_mixer_oss *mixer = entry->private_data;
1172         char line[128], str[32], idxstr[16];
1173         const char *cptr;
1174         unsigned int idx;
1175         int ch;
1176         struct snd_mixer_oss_assign_table *tbl;
1177         struct slot *slot;
1178
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)
1183                                 break;
1184                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1185                         pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n",
1186                                str);
1187                         continue;
1188                 }
1189                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1190                 if (! *str) {
1191                         /* remove the entry */
1192                         mutex_lock(&mixer->reg_mutex);
1193                         mixer_slot_clear(&mixer->slots[ch]);
1194                         mutex_unlock(&mixer->reg_mutex);
1195                         continue;
1196                 }
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);
1201                         continue;
1202                 }
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))
1207                         /* not changed */
1208                         goto __unlock;
1209                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1210                 if (!tbl)
1211                         goto __unlock;
1212                 tbl->oss_id = ch;
1213                 tbl->name = kstrdup(str, GFP_KERNEL);
1214                 if (! tbl->name) {
1215                         kfree(tbl);
1216                         goto __unlock;
1217                 }
1218                 tbl->index = idx;
1219                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1220                         kfree(tbl->name);
1221                         kfree(tbl);
1222                 }
1223         __unlock:
1224                 mutex_unlock(&mixer->reg_mutex);
1225         }
1226 }
1227
1228 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1229 {
1230         struct snd_info_entry *entry;
1231
1232         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1233                                            mixer->card->proc_root);
1234         if (! entry)
1235                 return;
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);
1243                 entry = NULL;
1244         }
1245         mixer->proc_entry = entry;
1246 }
1247
1248 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1249 {
1250         snd_info_free_entry(mixer->proc_entry);
1251         mixer->proc_entry = NULL;
1252 }
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 */
1257
1258 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1259 {
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 }
1299         };
1300         unsigned int idx;
1301         
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;
1307         }
1308 }
1309
1310 /*
1311  *
1312  */
1313
1314 static int snd_mixer_oss_free1(void *private)
1315 {
1316         struct snd_mixer_oss *mixer = private;
1317         struct snd_card *card;
1318         int idx;
1319  
1320         if (!mixer)
1321                 return 0;
1322         card = mixer->card;
1323         if (snd_BUG_ON(mixer != card->mixer_oss))
1324                 return -ENXIO;
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);
1330         }
1331         kfree(mixer);
1332         return 0;
1333 }
1334
1335 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1336 {
1337         struct snd_mixer_oss *mixer;
1338
1339         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1340                 int idx, err;
1341
1342                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1343                 if (mixer == NULL)
1344                         return -ENOMEM;
1345                 mutex_init(&mixer->reg_mutex);
1346                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1347                                                    card, 0,
1348                                                    &snd_mixer_oss_f_ops, card)) < 0) {
1349                         dev_err(card->dev,
1350                                 "unable to register OSS mixer device %i:%i\n",
1351                                 card->number, 0);
1352                         kfree(mixer);
1353                         return err;
1354                 }
1355                 mixer->oss_dev_alloc = 1;
1356                 mixer->card = card;
1357                 if (*card->mixername)
1358                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1359                 else
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,
1364                                       card->number,
1365                                       mixer->name);
1366 #endif
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);
1372         } else {
1373                 mixer = card->mixer_oss;
1374                 if (mixer == NULL)
1375                         return 0;
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);
1379 #endif
1380                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1381                         mixer->oss_dev_alloc = 0;
1382                 }
1383                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1384                         return 0;
1385                 snd_mixer_oss_proc_done(mixer);
1386                 return snd_mixer_oss_free1(mixer);
1387         }
1388         return 0;
1389 }
1390
1391 static int __init alsa_mixer_oss_init(void)
1392 {
1393         struct snd_card *card;
1394         int idx;
1395         
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);
1399                 if (card) {
1400                         snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_REGISTER);
1401                         snd_card_unref(card);
1402                 }
1403         }
1404         return 0;
1405 }
1406
1407 static void __exit alsa_mixer_oss_exit(void)
1408 {
1409         struct snd_card *card;
1410         int idx;
1411
1412         snd_mixer_oss_notify_callback = NULL;
1413         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1414                 card = snd_card_ref(idx);
1415                 if (card) {
1416                         snd_mixer_oss_notify_handler(card, SND_MIXER_OSS_NOTIFY_FREE);
1417                         snd_card_unref(card);
1418                 }
1419         }
1420 }
1421
1422 module_init(alsa_mixer_oss_init)
1423 module_exit(alsa_mixer_oss_exit)