98fc0766f8853731757105c534556e27712e1e8f
[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/smp_lock.h>
25 #include <linux/slab.h>
26 #include <linux/time.h>
27 #include <linux/string.h>
28 #include <sound/core.h>
29 #include <sound/minors.h>
30 #include <sound/control.h>
31 #include <sound/info.h>
32 #include <sound/mixer_oss.h>
33 #include <linux/soundcard.h>
34
35 #define OSS_ALSAEMULVER         _SIOR ('M', 249, int)
36
37 MODULE_AUTHOR("Jaroslav Kysela <perex@suse.cz>");
38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
39 MODULE_LICENSE("GPL");
40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
41
42 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
43 {
44         int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode));
45         snd_card_t *card;
46         snd_mixer_oss_file_t *fmixer;
47         int err;
48
49         if ((card = snd_cards[cardnum]) == 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 = kcalloc(1, 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         snd_mixer_oss_file_t *fmixer;
75
76         if (file->private_data) {
77                 fmixer = (snd_mixer_oss_file_t *) 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(snd_mixer_oss_file_t *fmixer,
86                               mixer_info __user *_info)
87 {
88         snd_card_t *card = fmixer->card;
89         snd_mixer_oss_t *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(snd_mixer_oss_file_t *fmixer,
102                                        _old_mixer_info __user *_info)
103 {
104         snd_card_t *card = fmixer->card;
105         snd_mixer_oss_t *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(snd_mixer_oss_file_t *fmixer)
117 {
118         snd_mixer_oss_t *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(snd_mixer_oss_file_t *fmixer)
129 {
130         snd_mixer_oss_t *mixer = fmixer->mixer;
131         snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer)
145 {
146         snd_mixer_oss_t *mixer = fmixer->mixer;
147         snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer)
161 {
162         snd_mixer_oss_t *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                 snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer)
182 {
183         snd_mixer_oss_t *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                 snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer, int recsrc)
210 {
211         snd_mixer_oss_t *mixer = fmixer->mixer;
212         snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer, int slot)
247 {
248         snd_mixer_oss_t *mixer = fmixer->mixer;
249         snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer,
272                                     int slot, int volume)
273 {
274         snd_mixer_oss_t *mixer = fmixer->mixer;
275         snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *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((snd_mixer_oss_file_t *) file->private_data, cmd, arg);
366 }
367
368 int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg)
369 {
370         snd_mixer_oss_file_t 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 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 static snd_minor_t snd_mixer_oss_reg =
402 {
403         .comment =      "mixer",
404         .f_ops =        &snd_mixer_oss_f_ops,
405 };
406
407 /*
408  *  utilities
409  */
410
411 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
412 {
413         long orange = omax - omin, nrange = nmax - nmin;
414         
415         if (orange == 0)
416                 return 0;
417         return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
418 }
419
420 /* convert from alsa native to oss values (0-100) */
421 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
422 {
423         if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
424                 return *old;
425         return snd_mixer_oss_conv(val, min, max, 0, 100);
426 }
427
428 /* convert from oss to alsa native values */
429 static long snd_mixer_oss_conv2(long val, long min, long max)
430 {
431         return snd_mixer_oss_conv(val, 0, 100, min, max);
432 }
433
434 #if 0
435 static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot)
436 {
437         snd_mixer_oss_t *mixer = card->mixer_oss;
438         if (mixer)
439                 mixer->mask_recsrc |= 1 << slot;
440 }
441
442 static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot)
443 {
444         snd_mixer_oss_t *mixer = card->mixer_oss;
445         if (mixer && (mixer->mask_recsrc & (1 << slot)))
446                 return 1;
447         return 0;
448 }
449 #endif
450
451 #define SNDRV_MIXER_OSS_SIGNATURE               0x65999250
452
453 #define SNDRV_MIXER_OSS_ITEM_GLOBAL     0
454 #define SNDRV_MIXER_OSS_ITEM_GSWITCH    1
455 #define SNDRV_MIXER_OSS_ITEM_GROUTE     2
456 #define SNDRV_MIXER_OSS_ITEM_GVOLUME    3
457 #define SNDRV_MIXER_OSS_ITEM_PSWITCH    4
458 #define SNDRV_MIXER_OSS_ITEM_PROUTE     5
459 #define SNDRV_MIXER_OSS_ITEM_PVOLUME    6
460 #define SNDRV_MIXER_OSS_ITEM_CSWITCH    7
461 #define SNDRV_MIXER_OSS_ITEM_CROUTE     8
462 #define SNDRV_MIXER_OSS_ITEM_CVOLUME    9
463 #define SNDRV_MIXER_OSS_ITEM_CAPTURE    10
464
465 #define SNDRV_MIXER_OSS_ITEM_COUNT      11
466
467 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL  (1<<0)
468 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
469 #define SNDRV_MIXER_OSS_PRESENT_GROUTE  (1<<2)
470 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
471 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
472 #define SNDRV_MIXER_OSS_PRESENT_PROUTE  (1<<5)
473 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
474 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
475 #define SNDRV_MIXER_OSS_PRESENT_CROUTE  (1<<8)
476 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
477 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
478
479 struct slot {
480         unsigned int signature;
481         unsigned int present;
482         unsigned int channels;
483         unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
484         unsigned int capture_item;
485         struct snd_mixer_oss_assign_table *assigned;
486         unsigned int allocated: 1;
487 };
488
489 #define ID_UNKNOWN      ((unsigned int)-1)
490
491 static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index)
492 {
493         snd_card_t * card = mixer->card;
494         snd_ctl_elem_id_t id;
495         
496         memset(&id, 0, sizeof(id));
497         id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
498         strcpy(id.name, name);
499         id.index = index;
500         return snd_ctl_find_id(card, &id);
501 }
502
503 static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer,
504                                           snd_mixer_oss_slot_t *pslot,
505                                           unsigned int numid,
506                                           int *left, int *right)
507 {
508         snd_ctl_elem_info_t *uinfo;
509         snd_ctl_elem_value_t *uctl;
510         snd_kcontrol_t *kctl;
511         snd_card_t *card = fmixer->card;
512
513         if (numid == ID_UNKNOWN)
514                 return;
515         down_read(&card->controls_rwsem);
516         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
517                 up_read(&card->controls_rwsem);
518                 return;
519         }
520         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
521         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
522         if (uinfo == NULL || uctl == NULL)
523                 goto __unalloc;
524         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
525         snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc);
526         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
527         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
528         if (uinfo->count > 1)
529                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
530       __unalloc:
531         up_read(&card->controls_rwsem);
532         kfree(uctl);
533         kfree(uinfo);
534 }
535
536 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
537                                          snd_mixer_oss_slot_t *pslot,
538                                          unsigned int numid,
539                                          int *left, int *right,
540                                          int route)
541 {
542         snd_ctl_elem_info_t *uinfo;
543         snd_ctl_elem_value_t *uctl;
544         snd_kcontrol_t *kctl;
545         snd_card_t *card = fmixer->card;
546
547         if (numid == ID_UNKNOWN)
548                 return;
549         down_read(&card->controls_rwsem);
550         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
551                 up_read(&card->controls_rwsem);
552                 return;
553         }
554         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
555         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
556         if (uinfo == NULL || uctl == NULL)
557                 goto __unalloc;
558         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
559         snd_runtime_check(!kctl->get(kctl, uctl), 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(snd_mixer_oss_file_t *fmixer,
574                                      snd_mixer_oss_slot_t *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(snd_mixer_oss_file_t *fmixer,
600                                           snd_mixer_oss_slot_t *pslot,
601                                           unsigned int numid,
602                                           int left, int right)
603 {
604         snd_ctl_elem_info_t *uinfo;
605         snd_ctl_elem_value_t *uctl;
606         snd_kcontrol_t *kctl;
607         snd_card_t *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 = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
616         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
617         if (uinfo == NULL || uctl == NULL)
618                 goto __unalloc;
619         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
620         snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc);
621         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
622         if (uinfo->count > 1)
623                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
624         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
625         if (res > 0)
626                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
627       __unalloc:
628         up_read(&card->controls_rwsem);
629         kfree(uctl);
630         kfree(uinfo);
631 }
632
633 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
634                                          snd_mixer_oss_slot_t *pslot,
635                                          unsigned int numid,
636                                          int left, int right,
637                                          int route)
638 {
639         snd_ctl_elem_info_t *uinfo;
640         snd_ctl_elem_value_t *uctl;
641         snd_kcontrol_t *kctl;
642         snd_card_t *card = fmixer->card;
643         int res;
644
645         if (numid == ID_UNKNOWN)
646                 return;
647         down_read(&card->controls_rwsem);
648         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
649                 up_read(&fmixer->card->controls_rwsem);
650                 return;
651         }
652         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
653         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
654         if (uinfo == NULL || uctl == NULL)
655                 goto __unalloc;
656         snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc);
657         if (uinfo->count > 1) {
658                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
659                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
660                 if (route) {
661                         uctl->value.integer.value[1] =
662                         uctl->value.integer.value[2] = 0;
663                 }
664         } else {
665                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
666         }
667         snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc);
668         if (res > 0)
669                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
670       __unalloc:
671         up_read(&card->controls_rwsem);
672         kfree(uctl);
673         kfree(uinfo);
674 }
675
676 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
677                                      snd_mixer_oss_slot_t *pslot,
678                                      int left, int right)
679 {
680         struct slot *slot = (struct slot *)pslot->private_data;
681         
682         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
683                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
684                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
685                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
686         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
687                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
688         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
689                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
690         }
691         if (left || right) {
692                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
693                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
694                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
695                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
696                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
697                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
698                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
699                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
700         } else {
701                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
702                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
703                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
704                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
705                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
706                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
707                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
708                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
709                 }
710         }
711         return 0;
712 }
713
714 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
715                                         snd_mixer_oss_slot_t *pslot,
716                                         int *active)
717 {
718         struct slot *slot = (struct slot *)pslot->private_data;
719         int left, right;
720         
721         left = right = 1;
722         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
723         *active = (left || right) ? 1 : 0;
724         return 0;
725 }
726
727 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
728                                            snd_mixer_oss_slot_t *pslot,
729                                            int *active)
730 {
731         struct slot *slot = (struct slot *)pslot->private_data;
732         int left, right;
733         
734         left = right = 1;
735         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
736         *active = (left || right) ? 1 : 0;
737         return 0;
738 }
739
740 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
741                                         snd_mixer_oss_slot_t *pslot,
742                                         int active)
743 {
744         struct slot *slot = (struct slot *)pslot->private_data;
745         
746         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
747         return 0;
748 }
749
750 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
751                                            snd_mixer_oss_slot_t *pslot,
752                                            int active)
753 {
754         struct slot *slot = (struct slot *)pslot->private_data;
755         
756         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
757         return 0;
758 }
759
760 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
761 {
762         snd_card_t *card = fmixer->card;
763         snd_mixer_oss_t *mixer = fmixer->mixer;
764         snd_kcontrol_t *kctl;
765         snd_mixer_oss_slot_t *pslot;
766         struct slot *slot;
767         snd_ctl_elem_info_t *uinfo;
768         snd_ctl_elem_value_t *uctl;
769         int err, idx;
770         
771         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
772         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
773         if (uinfo == NULL || uctl == NULL) {
774                 err = -ENOMEM;
775                 goto __unlock;
776         }
777         down_read(&card->controls_rwsem);
778         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
779         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
780         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
781         snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock);
782         for (idx = 0; idx < 32; idx++) {
783                 if (!(mixer->mask_recsrc & (1 << idx)))
784                         continue;
785                 pslot = &mixer->slots[idx];
786                 slot = (struct slot *)pslot->private_data;
787                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
788                         continue;
789                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
790                         continue;
791                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
792                         *active_index = idx;
793                         break;
794                 }
795         }
796         err = 0;
797       __unlock:
798         up_read(&card->controls_rwsem);
799         kfree(uctl);
800         kfree(uinfo);
801         return err;
802 }
803
804 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
805 {
806         snd_card_t *card = fmixer->card;
807         snd_mixer_oss_t *mixer = fmixer->mixer;
808         snd_kcontrol_t *kctl;
809         snd_mixer_oss_slot_t *pslot;
810         struct slot *slot = NULL;
811         snd_ctl_elem_info_t *uinfo;
812         snd_ctl_elem_value_t *uctl;
813         int err;
814         unsigned int idx;
815
816         uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL);
817         uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL);
818         if (uinfo == NULL || uctl == NULL) {
819                 err = -ENOMEM;
820                 goto __unlock;
821         }
822         down_read(&card->controls_rwsem);
823         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
824         snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock);
825         snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock);
826         for (idx = 0; idx < 32; idx++) {
827                 if (!(mixer->mask_recsrc & (1 << idx)))
828                         continue;
829                 pslot = &mixer->slots[idx];
830                 slot = (struct slot *)pslot->private_data;
831                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
832                         continue;
833                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
834                         continue;
835                 if (idx == active_index)
836                         break;
837                 slot = NULL;
838         }
839         snd_runtime_check(slot != NULL, goto __unlock);
840         for (idx = 0; idx < uinfo->count; idx++)
841                 uctl->value.enumerated.item[idx] = slot->capture_item;
842         snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, );
843         if (err > 0)
844                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
845         err = 0;
846       __unlock:
847         up_read(&card->controls_rwsem);
848         kfree(uctl);
849         kfree(uinfo);
850         return err;
851 }
852
853 struct snd_mixer_oss_assign_table {
854         int oss_id;
855         const char *name;
856         int index;
857 };
858
859 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
860 {
861         snd_ctl_elem_info_t *info;
862         snd_kcontrol_t *kcontrol;
863         snd_card_t *card = mixer->card;
864         int err;
865
866         down_read(&card->controls_rwsem);
867         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
868         if (kcontrol == NULL) {
869                 up_read(&card->controls_rwsem);
870                 return 0;
871         }
872         info = kmalloc(sizeof(*info), GFP_KERNEL);
873         if (! info) {
874                 up_read(&card->controls_rwsem);
875                 return -ENOMEM;
876         }
877         if ((err = kcontrol->info(kcontrol, info)) < 0) {
878                 up_read(&card->controls_rwsem);
879                 kfree(info);
880                 return err;
881         }
882         slot->numid[item] = kcontrol->id.numid;
883         up_read(&card->controls_rwsem);
884         if (info->count > slot->channels)
885                 slot->channels = info->count;
886         slot->present |= 1 << item;
887         kfree(info);
888         return 0;
889 }
890
891 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
892 {
893         struct slot *p = (struct slot *)chn->private_data;
894         if (p) {
895                 if (p->allocated && p->assigned) {
896                         kfree(p->assigned->name);
897                         kfree(p->assigned);
898                 }
899                 kfree(p);
900         }
901 }
902
903 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
904 {
905         int idx = rslot->number; /* remember this */
906         if (rslot->private_free)
907                 rslot->private_free(rslot);
908         memset(rslot, 0, sizeof(*rslot));
909         rslot->number = idx;
910 }
911
912 /*
913  * build an OSS mixer element.
914  * ptr_allocated means the entry is dynamically allocated (change via proc file).
915  * when replace_old = 1, the old entry is replaced with the new one.
916  */
917 static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
918 {
919         struct slot slot;
920         struct slot *pslot;
921         snd_kcontrol_t *kctl;
922         snd_mixer_oss_slot_t *rslot;
923         char str[64];   
924         
925         /* check if already assigned */
926         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
927                 return 0;
928
929         memset(&slot, 0, sizeof(slot));
930         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
931         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
932                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
933                 return 0;
934         sprintf(str, "%s Switch", ptr->name);
935         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
936                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
937                 return 0;
938         sprintf(str, "%s Route", ptr->name);
939         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
940                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
941                 return 0;
942         sprintf(str, "%s Volume", ptr->name);
943         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
944                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
945                 return 0;
946         sprintf(str, "%s Playback Switch", ptr->name);
947         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
948                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
949                 return 0;
950         sprintf(str, "%s Playback Route", ptr->name);
951         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
952                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
953                 return 0;
954         sprintf(str, "%s Playback Volume", ptr->name);
955         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
956                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
957                 return 0;
958         sprintf(str, "%s Capture Switch", ptr->name);
959         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
960                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
961                 return 0;
962         sprintf(str, "%s Capture Route", ptr->name);
963         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
964                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
965                 return 0;
966         sprintf(str, "%s Capture Volume", ptr->name);
967         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
968                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
969                 return 0;
970         down_read(&mixer->card->controls_rwsem);
971         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
972                 snd_ctl_elem_info_t *uinfo;
973
974                 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
975                 if (! uinfo) {
976                         up_read(&mixer->card->controls_rwsem);
977                         return -ENOMEM;
978                 }
979                         
980                 memset(uinfo, 0, sizeof(*uinfo));
981                 if (kctl->info(kctl, uinfo)) {
982                         up_read(&mixer->card->controls_rwsem);
983                         return 0;
984                 }
985                 strcpy(str, ptr->name);
986                 if (!strcmp(str, "Master"))
987                         strcpy(str, "Mix");
988                 if (!strcmp(str, "Master Mono"))
989                         strcpy(str, "Mix Mono");
990                 slot.capture_item = 0;
991                 if (!strcmp(uinfo->value.enumerated.name, str)) {
992                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
993                 } else {
994                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
995                                 uinfo->value.enumerated.item = slot.capture_item;
996                                 if (kctl->info(kctl, uinfo)) {
997                                         up_read(&mixer->card->controls_rwsem);
998                                         return 0;
999                                 }
1000                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1001                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1002                                         break;
1003                                 }
1004                         }
1005                 }
1006                 kfree(uinfo);
1007         }
1008         up_read(&mixer->card->controls_rwsem);
1009         if (slot.present != 0) {
1010                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1011                 snd_runtime_check(pslot != NULL, return -ENOMEM);
1012                 *pslot = slot;
1013                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1014                 pslot->assigned = ptr;
1015                 pslot->allocated = ptr_allocated;
1016                 rslot = &mixer->slots[ptr->oss_id];
1017                 mixer_slot_clear(rslot);
1018                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1019                 rslot->get_volume = snd_mixer_oss_get_volume1;
1020                 rslot->put_volume = snd_mixer_oss_put_volume1;
1021                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1022                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1023                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1024                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1025                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1026                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1027                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1028                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1029                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1030                 }
1031                 rslot->private_data = pslot;
1032                 rslot->private_free = snd_mixer_oss_slot_free;
1033                 return 1;
1034         }
1035         return 0;
1036 }
1037
1038 /*
1039  */
1040 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1041 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1042         MIXER_VOL(VOLUME),
1043         MIXER_VOL(BASS),
1044         MIXER_VOL(TREBLE),
1045         MIXER_VOL(SYNTH),
1046         MIXER_VOL(PCM),
1047         MIXER_VOL(SPEAKER),
1048         MIXER_VOL(LINE),
1049         MIXER_VOL(MIC),
1050         MIXER_VOL(CD),
1051         MIXER_VOL(IMIX),
1052         MIXER_VOL(ALTPCM),
1053         MIXER_VOL(RECLEV),
1054         MIXER_VOL(IGAIN),
1055         MIXER_VOL(OGAIN),
1056         MIXER_VOL(LINE1),
1057         MIXER_VOL(LINE2),
1058         MIXER_VOL(LINE3),
1059         MIXER_VOL(DIGITAL1),
1060         MIXER_VOL(DIGITAL2),
1061         MIXER_VOL(DIGITAL3),
1062         MIXER_VOL(PHONEIN),
1063         MIXER_VOL(PHONEOUT),
1064         MIXER_VOL(VIDEO),
1065         MIXER_VOL(RADIO),
1066         MIXER_VOL(MONITOR),
1067 };
1068         
1069 /*
1070  *  /proc interface
1071  */
1072
1073 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1074                                     snd_info_buffer_t * buffer)
1075 {
1076         snd_mixer_oss_t *mixer = entry->private_data;
1077         int i;
1078
1079         down(&mixer->reg_mutex);
1080         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1081                 struct slot *p;
1082
1083                 if (! oss_mixer_names[i])
1084                         continue;
1085                 p = (struct slot *)mixer->slots[i].private_data;
1086                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1087                 if (p && p->assigned)
1088                         snd_iprintf(buffer, "\"%s\" %d\n",
1089                                     p->assigned->name,
1090                                     p->assigned->index);
1091                 else
1092                         snd_iprintf(buffer, "\"\" 0\n");
1093         }
1094         up(&mixer->reg_mutex);
1095 }
1096
1097 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1098                                      snd_info_buffer_t * buffer)
1099 {
1100         snd_mixer_oss_t *mixer = entry->private_data;
1101         char line[128], str[32], idxstr[16], *cptr;
1102         int ch, idx;
1103         struct snd_mixer_oss_assign_table *tbl;
1104         struct slot *slot;
1105
1106         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1107                 cptr = snd_info_get_str(str, line, sizeof(str));
1108                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1109                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1110                                 break;
1111                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1112                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1113                         continue;
1114                 }
1115                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1116                 if (! *str) {
1117                         /* remove the entry */
1118                         down(&mixer->reg_mutex);
1119                         mixer_slot_clear(&mixer->slots[ch]);
1120                         up(&mixer->reg_mutex);
1121                         continue;
1122                 }
1123                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1124                 idx = simple_strtoul(idxstr, NULL, 10);
1125                 if (idx >= 0x4000) { /* too big */
1126                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1127                         continue;
1128                 }
1129                 down(&mixer->reg_mutex);
1130                 slot = (struct slot *)mixer->slots[ch].private_data;
1131                 if (slot && slot->assigned &&
1132                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1133                         /* not changed */
1134                         goto __unlock;
1135                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1136                 if (! tbl) {
1137                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1138                         goto __unlock;
1139                 }
1140                 tbl->oss_id = ch;
1141                 tbl->name = kstrdup(str, GFP_KERNEL);
1142                 if (! tbl->name) {
1143                         kfree(tbl);
1144                         goto __unlock;
1145                 }
1146                 tbl->index = idx;
1147                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1148                         kfree(tbl->name);
1149                         kfree(tbl);
1150                 }
1151         __unlock:
1152                 up(&mixer->reg_mutex);
1153         }
1154 }
1155
1156 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1157 {
1158         snd_info_entry_t *entry;
1159
1160         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1161                                            mixer->card->proc_root);
1162         if (! entry)
1163                 return;
1164         entry->content = SNDRV_INFO_CONTENT_TEXT;
1165         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1166         entry->c.text.read_size = 8192;
1167         entry->c.text.read = snd_mixer_oss_proc_read;
1168         entry->c.text.write_size = 8192;
1169         entry->c.text.write = snd_mixer_oss_proc_write;
1170         entry->private_data = mixer;
1171         if (snd_info_register(entry) < 0) {
1172                 snd_info_free_entry(entry);
1173                 entry = NULL;
1174         }
1175         mixer->proc_entry = entry;
1176 }
1177
1178 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1179 {
1180         if (mixer->proc_entry) {
1181                 snd_info_unregister(mixer->proc_entry);
1182                 mixer->proc_entry = NULL;
1183         }
1184 }
1185
1186 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1187 {
1188         static struct snd_mixer_oss_assign_table table[] = {
1189                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1190                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1191                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1192                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1193                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1194                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1195                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1196                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1197                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1198                 { SOUND_MIXER_LINE,     "Line",                 0 },
1199                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1200                 { SOUND_MIXER_CD,       "CD",                   0 },
1201                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1202                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1203                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1204                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1205                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1206                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1207                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1208                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1209                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1210                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1211                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1212                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1213                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1214                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1215                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1216                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1217                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1218                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1219                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1220                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1221                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1222                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1223         };
1224         unsigned int idx;
1225         
1226         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1227                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1228         if (mixer->mask_recsrc) {
1229                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1230                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1231         }
1232 }
1233
1234 /*
1235  *
1236  */
1237
1238 static int snd_mixer_oss_free1(void *private)
1239 {
1240         snd_mixer_oss_t *mixer = private;
1241         snd_card_t * card;
1242         int idx;
1243  
1244         snd_assert(mixer != NULL, return -ENXIO);
1245         card = mixer->card;
1246         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1247         card->mixer_oss = NULL;
1248         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1249                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1250                 if (chn->private_free)
1251                         chn->private_free(chn);
1252         }
1253         kfree(mixer);
1254         return 0;
1255 }
1256
1257 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1258 {
1259         snd_mixer_oss_t *mixer;
1260
1261         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1262                 char name[128];
1263                 int idx, err;
1264
1265                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1266                 if (mixer == NULL)
1267                         return -ENOMEM;
1268                 init_MUTEX(&mixer->reg_mutex);
1269                 sprintf(name, "mixer%i%i", card->number, 0);
1270                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1271                                                    card, 0,
1272                                                    &snd_mixer_oss_reg,
1273                                                    name)) < 0) {
1274                         snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0);
1275                         kfree(mixer);
1276                         return err;
1277                 }
1278                 mixer->oss_dev_alloc = 1;
1279                 mixer->card = card;
1280                 if (*card->mixername)
1281                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1282                 else
1283                         strlcpy(mixer->name, name, sizeof(mixer->name));
1284 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1285                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1286                                       card->number,
1287                                       mixer->name);
1288 #endif
1289                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1290                         mixer->slots[idx].number = idx;
1291                 card->mixer_oss = mixer;
1292                 snd_mixer_oss_build(mixer);
1293                 snd_mixer_oss_proc_init(mixer);
1294         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1295                 mixer = card->mixer_oss;
1296                 if (mixer == NULL || !mixer->oss_dev_alloc)
1297                         return 0;
1298                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1299                 mixer->oss_dev_alloc = 0;
1300         } else {                /* free */
1301                 mixer = card->mixer_oss;
1302                 if (mixer == NULL)
1303                         return 0;
1304 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1305                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1306 #endif
1307                 if (mixer->oss_dev_alloc)
1308                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1309                 snd_mixer_oss_proc_done(mixer);
1310                 return snd_mixer_oss_free1(mixer);
1311         }
1312         return 0;
1313 }
1314
1315 static int __init alsa_mixer_oss_init(void)
1316 {
1317         int idx;
1318         
1319         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1320         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1321                 if (snd_cards[idx])
1322                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1323         }
1324         return 0;
1325 }
1326
1327 static void __exit alsa_mixer_oss_exit(void)
1328 {
1329         int idx;
1330
1331         snd_mixer_oss_notify_callback = NULL;
1332         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1333                 if (snd_cards[idx])
1334                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1335         }
1336 }
1337
1338 module_init(alsa_mixer_oss_init)
1339 module_exit(alsa_mixer_oss_exit)
1340
1341 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);