fccad8f0a6bb1de4d9b528a88934d7778e9c1042
[linux-2.6.git] / sound / core / oss / mixer_oss.c
1 /*
2  *  OSS emulation layer for the mixer interface
3  *  Copyright (c) by Jaroslav Kysela <perex@suse.cz>
4  *
5  *
6  *   This program is free software; you can redistribute it and/or modify
7  *   it under the terms of the GNU General Public License as published by
8  *   the Free Software Foundation; either version 2 of the License, or
9  *   (at your option) any later version.
10  *
11  *   This program is distributed in the hope that it will be useful,
12  *   but WITHOUT ANY WARRANTY; without even the implied warranty of
13  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  *   GNU General Public License for more details.
15  *
16  *   You should have received a copy of the GNU General Public License
17  *   along with this program; if not, write to the Free Software
18  *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
19  *
20  */
21
22 #include <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/time.h>
26 #include <linux/string.h>
27 #include <sound/core.h>
28 #include <sound/minors.h>
29 #include <sound/control.h>
30 #include <sound/info.h>
31 #include <sound/mixer_oss.h>
32 #include <linux/soundcard.h>
33
34 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
35
36 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
38 MODULE_LICENSE("GPL");
39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
40
41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
42 {
43         struct snd_card *card;
44         struct snd_mixer_oss_file *fmixer;
45         int err;
46
47         card = snd_lookup_oss_minor_data(iminor(inode),
48                                          SNDRV_OSS_DEVICE_TYPE_MIXER);
49         if (card == NULL)
50                 return -ENODEV;
51         if (card->mixer_oss == NULL)
52                 return -ENODEV;
53         err = snd_card_file_add(card, file);
54         if (err < 0)
55                 return err;
56         fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
57         if (fmixer == NULL) {
58                 snd_card_file_remove(card, file);
59                 return -ENOMEM;
60         }
61         fmixer->card = card;
62         fmixer->mixer = card->mixer_oss;
63         file->private_data = fmixer;
64         if (!try_module_get(card->module)) {
65                 kfree(fmixer);
66                 snd_card_file_remove(card, file);
67                 return -EFAULT;
68         }
69         return 0;
70 }
71
72 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
73 {
74         struct snd_mixer_oss_file *fmixer;
75
76         if (file->private_data) {
77                 fmixer = (struct snd_mixer_oss_file *) file->private_data;
78                 module_put(fmixer->card->module);
79                 snd_card_file_remove(fmixer->card, file);
80                 kfree(fmixer);
81         }
82         return 0;
83 }
84
85 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
86                               mixer_info __user *_info)
87 {
88         struct snd_card *card = fmixer->card;
89         struct snd_mixer_oss *mixer = fmixer->mixer;
90         struct mixer_info info;
91         
92         memset(&info, 0, sizeof(info));
93         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
94         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
95         info.modify_counter = card->mixer_oss_change_count;
96         if (copy_to_user(_info, &info, sizeof(info)))
97                 return -EFAULT;
98         return 0;
99 }
100
101 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
102                                        _old_mixer_info __user *_info)
103 {
104         struct snd_card *card = fmixer->card;
105         struct snd_mixer_oss *mixer = fmixer->mixer;
106         _old_mixer_info info;
107         
108         memset(&info, 0, sizeof(info));
109         strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
110         strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
111         if (copy_to_user(_info, &info, sizeof(info)))
112                 return -EFAULT;
113         return 0;
114 }
115
116 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
117 {
118         struct snd_mixer_oss *mixer = fmixer->mixer;
119         int result = 0;
120
121         if (mixer == NULL)
122                 return -EIO;
123         if (mixer->get_recsrc && mixer->put_recsrc)
124                 result |= SOUND_CAP_EXCL_INPUT;
125         return result;
126 }
127
128 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
129 {
130         struct snd_mixer_oss *mixer = fmixer->mixer;
131         struct snd_mixer_oss_slot *pslot;
132         int result = 0, chn;
133
134         if (mixer == NULL)
135                 return -EIO;
136         for (chn = 0; chn < 31; chn++) {
137                 pslot = &mixer->slots[chn];
138                 if (pslot->put_volume || pslot->put_recsrc)
139                         result |= 1 << chn;
140         }
141         return result;
142 }
143
144 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
145 {
146         struct snd_mixer_oss *mixer = fmixer->mixer;
147         struct snd_mixer_oss_slot *pslot;
148         int result = 0, chn;
149
150         if (mixer == NULL)
151                 return -EIO;
152         for (chn = 0; chn < 31; chn++) {
153                 pslot = &mixer->slots[chn];
154                 if (pslot->put_volume && pslot->stereo)
155                         result |= 1 << chn;
156         }
157         return result;
158 }
159
160 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
161 {
162         struct snd_mixer_oss *mixer = fmixer->mixer;
163         int result = 0;
164
165         if (mixer == NULL)
166                 return -EIO;
167         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
168                 result = mixer->mask_recsrc;
169         } else {
170                 struct snd_mixer_oss_slot *pslot;
171                 int chn;
172                 for (chn = 0; chn < 31; chn++) {
173                         pslot = &mixer->slots[chn];
174                         if (pslot->put_recsrc)
175                                 result |= 1 << chn;
176                 }
177         }
178         return result;
179 }
180
181 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
182 {
183         struct snd_mixer_oss *mixer = fmixer->mixer;
184         int result = 0;
185
186         if (mixer == NULL)
187                 return -EIO;
188         if (mixer->put_recsrc && mixer->get_recsrc) {   /* exclusive */
189                 int err;
190                 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
191                         return err;
192                 result = 1 << result;
193         } else {
194                 struct snd_mixer_oss_slot *pslot;
195                 int chn;
196                 for (chn = 0; chn < 31; chn++) {
197                         pslot = &mixer->slots[chn];
198                         if (pslot->get_recsrc) {
199                                 int active = 0;
200                                 pslot->get_recsrc(fmixer, pslot, &active);
201                                 if (active)
202                                         result |= 1 << chn;
203                         }
204                 }
205         }
206         return mixer->oss_recsrc = result;
207 }
208
209 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
210 {
211         struct snd_mixer_oss *mixer = fmixer->mixer;
212         struct snd_mixer_oss_slot *pslot;
213         int chn, active;
214         int result = 0;
215
216         if (mixer == NULL)
217                 return -EIO;
218         if (mixer->get_recsrc && mixer->put_recsrc) {   /* exclusive input */
219                 if (recsrc & ~mixer->oss_recsrc)
220                         recsrc &= ~mixer->oss_recsrc;
221                 mixer->put_recsrc(fmixer, ffz(~recsrc));
222                 mixer->get_recsrc(fmixer, &result);
223                 result = 1 << result;
224         }
225         for (chn = 0; chn < 31; chn++) {
226                 pslot = &mixer->slots[chn];
227                 if (pslot->put_recsrc) {
228                         active = (recsrc & (1 << chn)) ? 1 : 0;
229                         pslot->put_recsrc(fmixer, pslot, active);
230                 }
231         }
232         if (! result) {
233                 for (chn = 0; chn < 31; chn++) {
234                         pslot = &mixer->slots[chn];
235                         if (pslot->get_recsrc) {
236                                 active = 0;
237                                 pslot->get_recsrc(fmixer, pslot, &active);
238                                 if (active)
239                                         result |= 1 << chn;
240                         }
241                 }
242         }
243         return result;
244 }
245
246 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
247 {
248         struct snd_mixer_oss *mixer = fmixer->mixer;
249         struct snd_mixer_oss_slot *pslot;
250         int result = 0, left, right;
251
252         if (mixer == NULL || slot > 30)
253                 return -EIO;
254         pslot = &mixer->slots[slot];
255         left = pslot->volume[0];
256         right = pslot->volume[1];
257         if (pslot->get_volume)
258                 result = pslot->get_volume(fmixer, pslot, &left, &right);
259         if (!pslot->stereo)
260                 right = left;
261         snd_assert(left >= 0 && left <= 100, return -EIO);
262         snd_assert(right >= 0 && right <= 100, return -EIO);
263         if (result >= 0) {
264                 pslot->volume[0] = left;
265                 pslot->volume[1] = right;
266                 result = (left & 0xff) | ((right & 0xff) << 8);
267         }
268         return result;
269 }
270
271 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
272                                     int slot, int volume)
273 {
274         struct snd_mixer_oss *mixer = fmixer->mixer;
275         struct snd_mixer_oss_slot *pslot;
276         int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
277
278         if (mixer == NULL || slot > 30)
279                 return -EIO;
280         pslot = &mixer->slots[slot];
281         if (left > 100)
282                 left = 100;
283         if (right > 100)
284                 right = 100;
285         if (!pslot->stereo)
286                 right = left;
287         if (pslot->put_volume)
288                 result = pslot->put_volume(fmixer, pslot, left, right);
289         if (result < 0)
290                 return result;
291         pslot->volume[0] = left;
292         pslot->volume[1] = right;
293         return (left & 0xff) | ((right & 0xff) << 8);
294 }
295
296 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
297 {
298         void __user *argp = (void __user *)arg;
299         int __user *p = argp;
300         int tmp;
301
302         snd_assert(fmixer != NULL, return -ENXIO);
303         if (((cmd >> 8) & 0xff) == 'M') {
304                 switch (cmd) {
305                 case SOUND_MIXER_INFO:
306                         return snd_mixer_oss_info(fmixer, argp);
307                 case SOUND_OLD_MIXER_INFO:
308                         return snd_mixer_oss_info_obsolete(fmixer, argp);
309                 case SOUND_MIXER_WRITE_RECSRC:
310                         if (get_user(tmp, p))
311                                 return -EFAULT;
312                         tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
313                         if (tmp < 0)
314                                 return tmp;
315                         return put_user(tmp, p);
316                 case OSS_GETVERSION:
317                         return put_user(SNDRV_OSS_VERSION, p);
318                 case OSS_ALSAEMULVER:
319                         return put_user(1, p);
320                 case SOUND_MIXER_READ_DEVMASK:
321                         tmp = snd_mixer_oss_devmask(fmixer);
322                         if (tmp < 0)
323                                 return tmp;
324                         return put_user(tmp, p);
325                 case SOUND_MIXER_READ_STEREODEVS:
326                         tmp = snd_mixer_oss_stereodevs(fmixer);
327                         if (tmp < 0)
328                                 return tmp;
329                         return put_user(tmp, p);
330                 case SOUND_MIXER_READ_RECMASK:
331                         tmp = snd_mixer_oss_recmask(fmixer);
332                         if (tmp < 0)
333                                 return tmp;
334                         return put_user(tmp, p);
335                 case SOUND_MIXER_READ_CAPS:
336                         tmp = snd_mixer_oss_caps(fmixer);
337                         if (tmp < 0)
338                                 return tmp;
339                         return put_user(tmp, p);
340                 case SOUND_MIXER_READ_RECSRC:
341                         tmp = snd_mixer_oss_get_recsrc(fmixer);
342                         if (tmp < 0)
343                                 return tmp;
344                         return put_user(tmp, p);
345                 }
346         }
347         if (cmd & SIOC_IN) {
348                 if (get_user(tmp, p))
349                         return -EFAULT;
350                 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
351                 if (tmp < 0)
352                         return tmp;
353                 return put_user(tmp, p);
354         } else if (cmd & SIOC_OUT) {
355                 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
356                 if (tmp < 0)
357                         return tmp;
358                 return put_user(tmp, p);
359         }
360         return -ENXIO;
361 }
362
363 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
364 {
365         return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
366 }
367
368 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
369 {
370         struct snd_mixer_oss_file fmixer;
371         
372         snd_assert(card != NULL, return -ENXIO);
373         if (card->mixer_oss == NULL)
374                 return -ENXIO;
375         memset(&fmixer, 0, sizeof(fmixer));
376         fmixer.card = card;
377         fmixer.mixer = card->mixer_oss;
378         return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
379 }
380
381 #ifdef CONFIG_COMPAT
382 /* all compatible */
383 #define snd_mixer_oss_ioctl_compat      snd_mixer_oss_ioctl
384 #else
385 #define snd_mixer_oss_ioctl_compat      NULL
386 #endif
387
388 /*
389  *  REGISTRATION PART
390  */
391
392 static const struct file_operations snd_mixer_oss_f_ops =
393 {
394         .owner =        THIS_MODULE,
395         .open =         snd_mixer_oss_open,
396         .release =      snd_mixer_oss_release,
397         .unlocked_ioctl =       snd_mixer_oss_ioctl,
398         .compat_ioctl = snd_mixer_oss_ioctl_compat,
399 };
400
401 /*
402  *  utilities
403  */
404
405 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
406 {
407         long orange = omax - omin, nrange = nmax - nmin;
408         
409         if (orange == 0)
410                 return 0;
411         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
412 }
413
414 /* convert from alsa native to oss values (0-100) */
415 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
416 {
417         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
418                 return *old;
419         return snd_mixer_oss_conv(val, min, max, 0, 100);
420 }
421
422 /* convert from oss to alsa native values */
423 static long snd_mixer_oss_conv2(long val, long min, long max)
424 {
425         return snd_mixer_oss_conv(val, 0, 100, min, max);
426 }
427
428 #if 0
429 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
430 {
431         struct snd_mixer_oss *mixer = card->mixer_oss;
432         if (mixer)
433                 mixer->mask_recsrc |= 1 << slot;
434 }
435
436 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
437 {
438         struct snd_mixer_oss *mixer = card->mixer_oss;
439         if (mixer && (mixer->mask_recsrc & (1 << slot)))
440                 return 1;
441         return 0;
442 }
443 #endif
444
445 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
446
447 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
448 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
449 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
450 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
451 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
452 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
453 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
454 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
455 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
456 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
457 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
458
459 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
460
461 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
462 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
463 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
464 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
465 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
466 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
467 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
468 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
469 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
470 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
471 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
472
473 struct slot {
474         unsigned int signature;
475         unsigned int present;
476         unsigned int channels;
477         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
478         unsigned int capture_item;
479         struct snd_mixer_oss_assign_table *assigned;
480         unsigned int allocated: 1;
481 };
482
483 #define ID_UNKNOWN      ((unsigned int)-1)
484
485 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
486 {
487         struct snd_card *card = mixer->card;
488         struct snd_ctl_elem_id id;
489         
490         memset(&id, 0, sizeof(id));
491         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
492         strcpy(id.name, name);
493         id.index = index;
494         return snd_ctl_find_id(card, &id);
495 }
496
497 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
498                                           struct snd_mixer_oss_slot *pslot,
499                                           unsigned int numid,
500                                           int *left, int *right)
501 {
502         struct snd_ctl_elem_info *uinfo;
503         struct snd_ctl_elem_value *uctl;
504         struct snd_kcontrol *kctl;
505         struct snd_card *card = fmixer->card;
506
507         if (numid == ID_UNKNOWN)
508                 return;
509         down_read(&card->controls_rwsem);
510         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
511                 up_read(&card->controls_rwsem);
512                 return;
513         }
514         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
515         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
516         if (uinfo == NULL || uctl == NULL)
517                 goto __unalloc;
518         if (kctl->info(kctl, uinfo))
519                 goto __unalloc;
520         if (kctl->get(kctl, uctl))
521                 goto __unalloc;
522         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
523             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
524                 goto __unalloc;
525         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
526         if (uinfo->count > 1)
527                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
528       __unalloc:
529         up_read(&card->controls_rwsem);
530         kfree(uctl);
531         kfree(uinfo);
532 }
533
534 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
535                                          struct snd_mixer_oss_slot *pslot,
536                                          unsigned int numid,
537                                          int *left, int *right,
538                                          int route)
539 {
540         struct snd_ctl_elem_info *uinfo;
541         struct snd_ctl_elem_value *uctl;
542         struct snd_kcontrol *kctl;
543         struct snd_card *card = fmixer->card;
544
545         if (numid == ID_UNKNOWN)
546                 return;
547         down_read(&card->controls_rwsem);
548         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
549                 up_read(&card->controls_rwsem);
550                 return;
551         }
552         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
553         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
554         if (uinfo == NULL || uctl == NULL)
555                 goto __unalloc;
556         if (kctl->info(kctl, uinfo))
557                 goto __unalloc;
558         if (kctl->get(kctl, uctl))
559                 goto __unalloc;
560         if (!uctl->value.integer.value[0]) {
561                 *left = 0;
562                 if (uinfo->count == 1)
563                         *right = 0;
564         }
565         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
566                 *right = 0;
567       __unalloc:
568         up_read(&card->controls_rwsem);
569         kfree(uctl);
570         kfree(uinfo);
571 }
572
573 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
574                                      struct snd_mixer_oss_slot *pslot,
575                                      int *left, int *right)
576 {
577         struct slot *slot = (struct slot *)pslot->private_data;
578         
579         *left = *right = 100;
580         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
581                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
582         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
583                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
584         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
585                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
586         }
587         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
588                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
589         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
590                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
591         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
592                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
593         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
594                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
595         }
596         return 0;
597 }
598
599 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
600                                           struct snd_mixer_oss_slot *pslot,
601                                           unsigned int numid,
602                                           int left, int right)
603 {
604         struct snd_ctl_elem_info *uinfo;
605         struct snd_ctl_elem_value *uctl;
606         struct snd_kcontrol *kctl;
607         struct snd_card *card = fmixer->card;
608         int res;
609
610         if (numid == ID_UNKNOWN)
611                 return;
612         down_read(&card->controls_rwsem);
613         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
614                 return;
615         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
616         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
617         if (uinfo == NULL || uctl == NULL)
618                 goto __unalloc;
619         if (kctl->info(kctl, uinfo))
620                 goto __unalloc;
621         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
622             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
623                 goto __unalloc;
624         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
625         if (uinfo->count > 1)
626                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
627         if ((res = kctl->put(kctl, uctl)) < 0)
628                 goto __unalloc;
629         if (res > 0)
630                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
631       __unalloc:
632         up_read(&card->controls_rwsem);
633         kfree(uctl);
634         kfree(uinfo);
635 }
636
637 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
638                                          struct snd_mixer_oss_slot *pslot,
639                                          unsigned int numid,
640                                          int left, int right,
641                                          int route)
642 {
643         struct snd_ctl_elem_info *uinfo;
644         struct snd_ctl_elem_value *uctl;
645         struct snd_kcontrol *kctl;
646         struct snd_card *card = fmixer->card;
647         int res;
648
649         if (numid == ID_UNKNOWN)
650                 return;
651         down_read(&card->controls_rwsem);
652         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
653                 up_read(&fmixer->card->controls_rwsem);
654                 return;
655         }
656         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
657         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
658         if (uinfo == NULL || uctl == NULL)
659                 goto __unalloc;
660         if (kctl->info(kctl, uinfo))
661                 goto __unalloc;
662         if (uinfo->count > 1) {
663                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
664                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
665                 if (route) {
666                         uctl->value.integer.value[1] =
667                         uctl->value.integer.value[2] = 0;
668                 }
669         } else {
670                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
671         }
672         if ((res = kctl->put(kctl, uctl)) < 0)
673                 goto __unalloc;
674         if (res > 0)
675                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
676       __unalloc:
677         up_read(&card->controls_rwsem);
678         kfree(uctl);
679         kfree(uinfo);
680 }
681
682 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
683                                      struct snd_mixer_oss_slot *pslot,
684                                      int left, int right)
685 {
686         struct slot *slot = (struct slot *)pslot->private_data;
687         
688         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
689                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
690                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
691                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
692         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
693                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
694         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
695                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
696         }
697         if (left || right) {
698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
699                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
700                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
701                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
702                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
703                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
704                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
706         } else {
707                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
708                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
709                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
710                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
711                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
712                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
713                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
715                 }
716         }
717         return 0;
718 }
719
720 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
721                                         struct snd_mixer_oss_slot *pslot,
722                                         int *active)
723 {
724         struct slot *slot = (struct slot *)pslot->private_data;
725         int left, right;
726         
727         left = right = 1;
728         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
729         *active = (left || right) ? 1 : 0;
730         return 0;
731 }
732
733 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
734                                            struct snd_mixer_oss_slot *pslot,
735                                            int *active)
736 {
737         struct slot *slot = (struct slot *)pslot->private_data;
738         int left, right;
739         
740         left = right = 1;
741         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
742         *active = (left || right) ? 1 : 0;
743         return 0;
744 }
745
746 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
747                                         struct snd_mixer_oss_slot *pslot,
748                                         int active)
749 {
750         struct slot *slot = (struct slot *)pslot->private_data;
751         
752         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
753         return 0;
754 }
755
756 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
757                                            struct snd_mixer_oss_slot *pslot,
758                                            int active)
759 {
760         struct slot *slot = (struct slot *)pslot->private_data;
761         
762         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
763         return 0;
764 }
765
766 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
767 {
768         struct snd_card *card = fmixer->card;
769         struct snd_mixer_oss *mixer = fmixer->mixer;
770         struct snd_kcontrol *kctl;
771         struct snd_mixer_oss_slot *pslot;
772         struct slot *slot;
773         struct snd_ctl_elem_info *uinfo;
774         struct snd_ctl_elem_value *uctl;
775         int err, idx;
776         
777         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
778         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
779         if (uinfo == NULL || uctl == NULL) {
780                 err = -ENOMEM;
781                 goto __unlock;
782         }
783         down_read(&card->controls_rwsem);
784         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
785         if (! kctl) {
786                 err = -ENOENT;
787                 goto __unlock;
788         }
789         if ((err = kctl->info(kctl, uinfo)) < 0)
790                 goto __unlock;
791         if ((err = kctl->get(kctl, uctl)) < 0)
792                 goto __unlock;
793         for (idx = 0; idx < 32; idx++) {
794                 if (!(mixer->mask_recsrc & (1 << idx)))
795                         continue;
796                 pslot = &mixer->slots[idx];
797                 slot = (struct slot *)pslot->private_data;
798                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
799                         continue;
800                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
801                         continue;
802                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
803                         *active_index = idx;
804                         break;
805                 }
806         }
807         err = 0;
808       __unlock:
809         up_read(&card->controls_rwsem);
810         kfree(uctl);
811         kfree(uinfo);
812         return err;
813 }
814
815 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
816 {
817         struct snd_card *card = fmixer->card;
818         struct snd_mixer_oss *mixer = fmixer->mixer;
819         struct snd_kcontrol *kctl;
820         struct snd_mixer_oss_slot *pslot;
821         struct slot *slot = NULL;
822         struct snd_ctl_elem_info *uinfo;
823         struct snd_ctl_elem_value *uctl;
824         int err;
825         unsigned int idx;
826
827         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
828         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
829         if (uinfo == NULL || uctl == NULL) {
830                 err = -ENOMEM;
831                 goto __unlock;
832         }
833         down_read(&card->controls_rwsem);
834         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
835         if (! kctl) {
836                 err = -ENOENT;
837                 goto __unlock;
838         }
839         if ((err = kctl->info(kctl, uinfo)) < 0)
840                 goto __unlock;
841         for (idx = 0; idx < 32; idx++) {
842                 if (!(mixer->mask_recsrc & (1 << idx)))
843                         continue;
844                 pslot = &mixer->slots[idx];
845                 slot = (struct slot *)pslot->private_data;
846                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
847                         continue;
848                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
849                         continue;
850                 if (idx == active_index)
851                         break;
852                 slot = NULL;
853         }
854         if (! slot)
855                 goto __unlock;
856         for (idx = 0; idx < uinfo->count; idx++)
857                 uctl->value.enumerated.item[idx] = slot->capture_item;
858         err = kctl->put(kctl, uctl);
859         if (err > 0)
860                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
861         err = 0;
862       __unlock:
863         up_read(&card->controls_rwsem);
864         kfree(uctl);
865         kfree(uinfo);
866         return err;
867 }
868
869 struct snd_mixer_oss_assign_table {
870         int oss_id;
871         const char *name;
872         int index;
873 };
874
875 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
876 {
877         struct snd_ctl_elem_info *info;
878         struct snd_kcontrol *kcontrol;
879         struct snd_card *card = mixer->card;
880         int err;
881
882         down_read(&card->controls_rwsem);
883         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
884         if (kcontrol == NULL) {
885                 up_read(&card->controls_rwsem);
886                 return 0;
887         }
888         info = kmalloc(sizeof(*info), GFP_KERNEL);
889         if (! info) {
890                 up_read(&card->controls_rwsem);
891                 return -ENOMEM;
892         }
893         if ((err = kcontrol->info(kcontrol, info)) < 0) {
894                 up_read(&card->controls_rwsem);
895                 kfree(info);
896                 return err;
897         }
898         slot->numid[item] = kcontrol->id.numid;
899         up_read(&card->controls_rwsem);
900         if (info->count > slot->channels)
901                 slot->channels = info->count;
902         slot->present |= 1 << item;
903         kfree(info);
904         return 0;
905 }
906
907 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
908 {
909         struct slot *p = (struct slot *)chn->private_data;
910         if (p) {
911                 if (p->allocated && p->assigned) {
912                         kfree(p->assigned->name);
913                         kfree(p->assigned);
914                 }
915                 kfree(p);
916         }
917 }
918
919 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
920 {
921         int idx = rslot->number; /* remember this */
922         if (rslot->private_free)
923                 rslot->private_free(rslot);
924         memset(rslot, 0, sizeof(*rslot));
925         rslot->number = idx;
926 }
927
928 /*
929  * build an OSS mixer element.
930  * ptr_allocated means the entry is dynamically allocated (change via proc file).
931  * when replace_old = 1, the old entry is replaced with the new one.
932  */
933 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)
934 {
935         struct slot slot;
936         struct slot *pslot;
937         struct snd_kcontrol *kctl;
938         struct snd_mixer_oss_slot *rslot;
939         char str[64];   
940         
941         /* check if already assigned */
942         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
943                 return 0;
944
945         memset(&slot, 0, sizeof(slot));
946         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
947         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
948                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
949                 return 0;
950         sprintf(str, "%s Switch", ptr->name);
951         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
952                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
953                 return 0;
954         sprintf(str, "%s Route", ptr->name);
955         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
956                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
957                 return 0;
958         sprintf(str, "%s Volume", ptr->name);
959         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
960                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
961                 return 0;
962         sprintf(str, "%s Playback Switch", ptr->name);
963         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
964                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
965                 return 0;
966         sprintf(str, "%s Playback Route", ptr->name);
967         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
968                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
969                 return 0;
970         sprintf(str, "%s Playback Volume", ptr->name);
971         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
972                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
973                 return 0;
974         sprintf(str, "%s Capture Switch", ptr->name);
975         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
976                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
977                 return 0;
978         sprintf(str, "%s Capture Route", ptr->name);
979         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
980                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
981                 return 0;
982         sprintf(str, "%s Capture Volume", ptr->name);
983         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
984                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
985                 return 0;
986         down_read(&mixer->card->controls_rwsem);
987         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
988                 struct snd_ctl_elem_info *uinfo;
989
990                 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
991                 if (! uinfo) {
992                         up_read(&mixer->card->controls_rwsem);
993                         return -ENOMEM;
994                 }
995                         
996                 if (kctl->info(kctl, uinfo)) {
997                         up_read(&mixer->card->controls_rwsem);
998                         return 0;
999                 }
1000                 strcpy(str, ptr->name);
1001                 if (!strcmp(str, "Master"))
1002                         strcpy(str, "Mix");
1003                 if (!strcmp(str, "Master Mono"))
1004                         strcpy(str, "Mix Mono");
1005                 slot.capture_item = 0;
1006                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1007                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1008                 } else {
1009                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1010                                 uinfo->value.enumerated.item = slot.capture_item;
1011                                 if (kctl->info(kctl, uinfo)) {
1012                                         up_read(&mixer->card->controls_rwsem);
1013                                         return 0;
1014                                 }
1015                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1016                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1017                                         break;
1018                                 }
1019                         }
1020                 }
1021                 kfree(uinfo);
1022         }
1023         up_read(&mixer->card->controls_rwsem);
1024         if (slot.present != 0) {
1025                 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1026                 if (! pslot)
1027                         return -ENOMEM;
1028                 *pslot = slot;
1029                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1030                 pslot->assigned = ptr;
1031                 pslot->allocated = ptr_allocated;
1032                 rslot = &mixer->slots[ptr->oss_id];
1033                 mixer_slot_clear(rslot);
1034                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1035                 rslot->get_volume = snd_mixer_oss_get_volume1;
1036                 rslot->put_volume = snd_mixer_oss_put_volume1;
1037                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1038                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1039                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1040                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1041                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1042                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1043                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1044                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1045                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1046                 }
1047                 rslot->private_data = pslot;
1048                 rslot->private_free = snd_mixer_oss_slot_free;
1049                 return 1;
1050         }
1051         return 0;
1052 }
1053
1054 #ifdef CONFIG_PROC_FS
1055 /*
1056  */
1057 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1058 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1059         MIXER_VOL(VOLUME),
1060         MIXER_VOL(BASS),
1061         MIXER_VOL(TREBLE),
1062         MIXER_VOL(SYNTH),
1063         MIXER_VOL(PCM),
1064         MIXER_VOL(SPEAKER),
1065         MIXER_VOL(LINE),
1066         MIXER_VOL(MIC),
1067         MIXER_VOL(CD),
1068         MIXER_VOL(IMIX),
1069         MIXER_VOL(ALTPCM),
1070         MIXER_VOL(RECLEV),
1071         MIXER_VOL(IGAIN),
1072         MIXER_VOL(OGAIN),
1073         MIXER_VOL(LINE1),
1074         MIXER_VOL(LINE2),
1075         MIXER_VOL(LINE3),
1076         MIXER_VOL(DIGITAL1),
1077         MIXER_VOL(DIGITAL2),
1078         MIXER_VOL(DIGITAL3),
1079         MIXER_VOL(PHONEIN),
1080         MIXER_VOL(PHONEOUT),
1081         MIXER_VOL(VIDEO),
1082         MIXER_VOL(RADIO),
1083         MIXER_VOL(MONITOR),
1084 };
1085         
1086 /*
1087  *  /proc interface
1088  */
1089
1090 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1091                                     struct snd_info_buffer *buffer)
1092 {
1093         struct snd_mixer_oss *mixer = entry->private_data;
1094         int i;
1095
1096         mutex_lock(&mixer->reg_mutex);
1097         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1098                 struct slot *p;
1099
1100                 if (! oss_mixer_names[i])
1101                         continue;
1102                 p = (struct slot *)mixer->slots[i].private_data;
1103                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1104                 if (p && p->assigned)
1105                         snd_iprintf(buffer, "\"%s\" %d\n",
1106                                     p->assigned->name,
1107                                     p->assigned->index);
1108                 else
1109                         snd_iprintf(buffer, "\"\" 0\n");
1110         }
1111         mutex_unlock(&mixer->reg_mutex);
1112 }
1113
1114 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1115                                      struct snd_info_buffer *buffer)
1116 {
1117         struct snd_mixer_oss *mixer = entry->private_data;
1118         char line[128], str[32], idxstr[16], *cptr;
1119         int ch, idx;
1120         struct snd_mixer_oss_assign_table *tbl;
1121         struct slot *slot;
1122
1123         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1124                 cptr = snd_info_get_str(str, line, sizeof(str));
1125                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1126                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1127                                 break;
1128                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1129                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1130                         continue;
1131                 }
1132                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1133                 if (! *str) {
1134                         /* remove the entry */
1135                         mutex_lock(&mixer->reg_mutex);
1136                         mixer_slot_clear(&mixer->slots[ch]);
1137                         mutex_unlock(&mixer->reg_mutex);
1138                         continue;
1139                 }
1140                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1141                 idx = simple_strtoul(idxstr, NULL, 10);
1142                 if (idx >= 0x4000) { /* too big */
1143                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1144                         continue;
1145                 }
1146                 mutex_lock(&mixer->reg_mutex);
1147                 slot = (struct slot *)mixer->slots[ch].private_data;
1148                 if (slot && slot->assigned &&
1149                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1150                         /* not changed */
1151                         goto __unlock;
1152                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1153                 if (! tbl) {
1154                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1155                         goto __unlock;
1156                 }
1157                 tbl->oss_id = ch;
1158                 tbl->name = kstrdup(str, GFP_KERNEL);
1159                 if (! tbl->name) {
1160                         kfree(tbl);
1161                         goto __unlock;
1162                 }
1163                 tbl->index = idx;
1164                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1165                         kfree(tbl->name);
1166                         kfree(tbl);
1167                 }
1168         __unlock:
1169                 mutex_unlock(&mixer->reg_mutex);
1170         }
1171 }
1172
1173 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1174 {
1175         struct snd_info_entry *entry;
1176
1177         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1178                                            mixer->card->proc_root);
1179         if (! entry)
1180                 return;
1181         entry->content = SNDRV_INFO_CONTENT_TEXT;
1182         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1183         entry->c.text.read = snd_mixer_oss_proc_read;
1184         entry->c.text.write = snd_mixer_oss_proc_write;
1185         entry->private_data = mixer;
1186         if (snd_info_register(entry) < 0) {
1187                 snd_info_free_entry(entry);
1188                 entry = NULL;
1189         }
1190         mixer->proc_entry = entry;
1191 }
1192
1193 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1194 {
1195         snd_info_free_entry(mixer->proc_entry);
1196         mixer->proc_entry = NULL;
1197 }
1198 #else /* !CONFIG_PROC_FS */
1199 #define snd_mixer_oss_proc_init(mix)
1200 #define snd_mixer_oss_proc_done(mix)
1201 #endif /* CONFIG_PROC_FS */
1202
1203 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1204 {
1205         static struct snd_mixer_oss_assign_table table[] = {
1206                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1207                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1208                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1209                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1210                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1211                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1212                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1213                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1214                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1215                 { SOUND_MIXER_LINE,     "Line",                 0 },
1216                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1217                 { SOUND_MIXER_CD,       "CD",                   0 },
1218                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1219                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1220                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1221                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1222                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1223                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1224                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1225                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1226                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1227                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1228                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1229                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1230                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1231                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1232                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1233                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1234                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1235                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1236                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1237                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1238                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1239                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1240         };
1241         unsigned int idx;
1242         
1243         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1244                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1245         if (mixer->mask_recsrc) {
1246                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1247                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1248         }
1249 }
1250
1251 /*
1252  *
1253  */
1254
1255 static int snd_mixer_oss_free1(void *private)
1256 {
1257         struct snd_mixer_oss *mixer = private;
1258         struct snd_card *card;
1259         int idx;
1260  
1261         snd_assert(mixer != NULL, return -ENXIO);
1262         card = mixer->card;
1263         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1264         card->mixer_oss = NULL;
1265         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1266                 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1267                 if (chn->private_free)
1268                         chn->private_free(chn);
1269         }
1270         kfree(mixer);
1271         return 0;
1272 }
1273
1274 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1275 {
1276         struct snd_mixer_oss *mixer;
1277
1278         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1279                 char name[128];
1280                 int idx, err;
1281
1282                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1283                 if (mixer == NULL)
1284                         return -ENOMEM;
1285                 mutex_init(&mixer->reg_mutex);
1286                 sprintf(name, "mixer%i%i", card->number, 0);
1287                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1288                                                    card, 0,
1289                                                    &snd_mixer_oss_f_ops, card,
1290                                                    name)) < 0) {
1291                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1292                                    card->number, 0);
1293                         kfree(mixer);
1294                         return err;
1295                 }
1296                 mixer->oss_dev_alloc = 1;
1297                 mixer->card = card;
1298                 if (*card->mixername)
1299                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1300                 else
1301                         strlcpy(mixer->name, name, sizeof(mixer->name));
1302 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1303                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1304                                       card->number,
1305                                       mixer->name);
1306 #endif
1307                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1308                         mixer->slots[idx].number = idx;
1309                 card->mixer_oss = mixer;
1310                 snd_mixer_oss_build(mixer);
1311                 snd_mixer_oss_proc_init(mixer);
1312         } else {
1313                 mixer = card->mixer_oss;
1314                 if (mixer == NULL)
1315                         return 0;
1316                 if (mixer->oss_dev_alloc) {
1317 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1318                         snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1319 #endif
1320                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1321                         mixer->oss_dev_alloc = 0;
1322                 }
1323                 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1324                         return 0;
1325                 snd_mixer_oss_proc_done(mixer);
1326                 return snd_mixer_oss_free1(mixer);
1327         }
1328         return 0;
1329 }
1330
1331 static int __init alsa_mixer_oss_init(void)
1332 {
1333         int idx;
1334         
1335         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1336         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1337                 if (snd_cards[idx])
1338                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1339         }
1340         return 0;
1341 }
1342
1343 static void __exit alsa_mixer_oss_exit(void)
1344 {
1345         int idx;
1346
1347         snd_mixer_oss_notify_callback = NULL;
1348         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1349                 if (snd_cards[idx])
1350                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1351         }
1352 }
1353
1354 module_init(alsa_mixer_oss_init)
1355 module_exit(alsa_mixer_oss_exit)
1356
1357 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);