[ALSA] Use standard bitmap functions
[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 = 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         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 = kzalloc(sizeof(*uinfo), GFP_KERNEL);
521         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
522         if (uinfo == NULL || uctl == NULL)
523                 goto __unalloc;
524         if (kctl->info(kctl, uinfo))
525                 goto __unalloc;
526         if (kctl->get(kctl, uctl))
527                 goto __unalloc;
528         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
529             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
530                 goto __unalloc;
531         *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
532         if (uinfo->count > 1)
533                 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
534       __unalloc:
535         up_read(&card->controls_rwsem);
536         kfree(uctl);
537         kfree(uinfo);
538 }
539
540 static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer,
541                                          snd_mixer_oss_slot_t *pslot,
542                                          unsigned int numid,
543                                          int *left, int *right,
544                                          int route)
545 {
546         snd_ctl_elem_info_t *uinfo;
547         snd_ctl_elem_value_t *uctl;
548         snd_kcontrol_t *kctl;
549         snd_card_t *card = fmixer->card;
550
551         if (numid == ID_UNKNOWN)
552                 return;
553         down_read(&card->controls_rwsem);
554         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
555                 up_read(&card->controls_rwsem);
556                 return;
557         }
558         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
559         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
560         if (uinfo == NULL || uctl == NULL)
561                 goto __unalloc;
562         if (kctl->info(kctl, uinfo))
563                 goto __unalloc;
564         if (kctl->get(kctl, uctl))
565                 goto __unalloc;
566         if (!uctl->value.integer.value[0]) {
567                 *left = 0;
568                 if (uinfo->count == 1)
569                         *right = 0;
570         }
571         if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
572                 *right = 0;
573       __unalloc:
574         up_read(&card->controls_rwsem);
575         kfree(uctl);
576         kfree(uinfo);
577 }
578
579 static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer,
580                                      snd_mixer_oss_slot_t *pslot,
581                                      int *left, int *right)
582 {
583         struct slot *slot = (struct slot *)pslot->private_data;
584         
585         *left = *right = 100;
586         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
587                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
588         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
589                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
590         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
591                 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
592         }
593         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
594                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
595         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
596                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
597         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
598                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
599         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
600                 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
601         }
602         return 0;
603 }
604
605 static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer,
606                                           snd_mixer_oss_slot_t *pslot,
607                                           unsigned int numid,
608                                           int left, int right)
609 {
610         snd_ctl_elem_info_t *uinfo;
611         snd_ctl_elem_value_t *uctl;
612         snd_kcontrol_t *kctl;
613         snd_card_t *card = fmixer->card;
614         int res;
615
616         if (numid == ID_UNKNOWN)
617                 return;
618         down_read(&card->controls_rwsem);
619         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
620                 return;
621         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
622         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
623         if (uinfo == NULL || uctl == NULL)
624                 goto __unalloc;
625         if (kctl->info(kctl, uinfo))
626                 goto __unalloc;
627         if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
628             uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
629                 goto __unalloc;
630         uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
631         if (uinfo->count > 1)
632                 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
633         if ((res = kctl->put(kctl, uctl)) < 0)
634                 goto __unalloc;
635         if (res > 0)
636                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
637       __unalloc:
638         up_read(&card->controls_rwsem);
639         kfree(uctl);
640         kfree(uinfo);
641 }
642
643 static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer,
644                                          snd_mixer_oss_slot_t *pslot,
645                                          unsigned int numid,
646                                          int left, int right,
647                                          int route)
648 {
649         snd_ctl_elem_info_t *uinfo;
650         snd_ctl_elem_value_t *uctl;
651         snd_kcontrol_t *kctl;
652         snd_card_t *card = fmixer->card;
653         int res;
654
655         if (numid == ID_UNKNOWN)
656                 return;
657         down_read(&card->controls_rwsem);
658         if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
659                 up_read(&fmixer->card->controls_rwsem);
660                 return;
661         }
662         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
663         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
664         if (uinfo == NULL || uctl == NULL)
665                 goto __unalloc;
666         if (kctl->info(kctl, uinfo))
667                 goto __unalloc;
668         if (uinfo->count > 1) {
669                 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
670                 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
671                 if (route) {
672                         uctl->value.integer.value[1] =
673                         uctl->value.integer.value[2] = 0;
674                 }
675         } else {
676                 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
677         }
678         if ((res = kctl->put(kctl, uctl)) < 0)
679                 goto __unalloc;
680         if (res > 0)
681                 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
682       __unalloc:
683         up_read(&card->controls_rwsem);
684         kfree(uctl);
685         kfree(uinfo);
686 }
687
688 static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer,
689                                      snd_mixer_oss_slot_t *pslot,
690                                      int left, int right)
691 {
692         struct slot *slot = (struct slot *)pslot->private_data;
693         
694         if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
695                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
696                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
697                         snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
698         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
699                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
700         } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
701                 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
702         }
703         if (left || right) {
704                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
705                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
706                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
707                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
708                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
709                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
710                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
711                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
712         } else {
713                 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
714                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
715                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
716                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
717                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
718                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
719                 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
720                         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
721                 }
722         }
723         return 0;
724 }
725
726 static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
727                                         snd_mixer_oss_slot_t *pslot,
728                                         int *active)
729 {
730         struct slot *slot = (struct slot *)pslot->private_data;
731         int left, right;
732         
733         left = right = 1;
734         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
735         *active = (left || right) ? 1 : 0;
736         return 0;
737 }
738
739 static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer,
740                                            snd_mixer_oss_slot_t *pslot,
741                                            int *active)
742 {
743         struct slot *slot = (struct slot *)pslot->private_data;
744         int left, right;
745         
746         left = right = 1;
747         snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
748         *active = (left || right) ? 1 : 0;
749         return 0;
750 }
751
752 static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer,
753                                         snd_mixer_oss_slot_t *pslot,
754                                         int active)
755 {
756         struct slot *slot = (struct slot *)pslot->private_data;
757         
758         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
759         return 0;
760 }
761
762 static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer,
763                                            snd_mixer_oss_slot_t *pslot,
764                                            int active)
765 {
766         struct slot *slot = (struct slot *)pslot->private_data;
767         
768         snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
769         return 0;
770 }
771
772 static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index)
773 {
774         snd_card_t *card = fmixer->card;
775         snd_mixer_oss_t *mixer = fmixer->mixer;
776         snd_kcontrol_t *kctl;
777         snd_mixer_oss_slot_t *pslot;
778         struct slot *slot;
779         snd_ctl_elem_info_t *uinfo;
780         snd_ctl_elem_value_t *uctl;
781         int err, idx;
782         
783         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
784         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
785         if (uinfo == NULL || uctl == NULL) {
786                 err = -ENOMEM;
787                 goto __unlock;
788         }
789         down_read(&card->controls_rwsem);
790         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
791         if (! kctl) {
792                 err = -ENOENT;
793                 goto __unlock;
794         }
795         if ((err = kctl->info(kctl, uinfo)) < 0)
796                 goto __unlock;
797         if ((err = kctl->get(kctl, uctl)) < 0)
798                 goto __unlock;
799         for (idx = 0; idx < 32; idx++) {
800                 if (!(mixer->mask_recsrc & (1 << idx)))
801                         continue;
802                 pslot = &mixer->slots[idx];
803                 slot = (struct slot *)pslot->private_data;
804                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
805                         continue;
806                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
807                         continue;
808                 if (slot->capture_item == uctl->value.enumerated.item[0]) {
809                         *active_index = idx;
810                         break;
811                 }
812         }
813         err = 0;
814       __unlock:
815         up_read(&card->controls_rwsem);
816         kfree(uctl);
817         kfree(uinfo);
818         return err;
819 }
820
821 static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index)
822 {
823         snd_card_t *card = fmixer->card;
824         snd_mixer_oss_t *mixer = fmixer->mixer;
825         snd_kcontrol_t *kctl;
826         snd_mixer_oss_slot_t *pslot;
827         struct slot *slot = NULL;
828         snd_ctl_elem_info_t *uinfo;
829         snd_ctl_elem_value_t *uctl;
830         int err;
831         unsigned int idx;
832
833         uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
834         uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
835         if (uinfo == NULL || uctl == NULL) {
836                 err = -ENOMEM;
837                 goto __unlock;
838         }
839         down_read(&card->controls_rwsem);
840         kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
841         if (! kctl) {
842                 err = -ENOENT;
843                 goto __unlock;
844         }
845         if ((err = kctl->info(kctl, uinfo)) < 0)
846                 goto __unlock;
847         for (idx = 0; idx < 32; idx++) {
848                 if (!(mixer->mask_recsrc & (1 << idx)))
849                         continue;
850                 pslot = &mixer->slots[idx];
851                 slot = (struct slot *)pslot->private_data;
852                 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
853                         continue;
854                 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
855                         continue;
856                 if (idx == active_index)
857                         break;
858                 slot = NULL;
859         }
860         if (! slot)
861                 goto __unlock;
862         for (idx = 0; idx < uinfo->count; idx++)
863                 uctl->value.enumerated.item[idx] = slot->capture_item;
864         err = kctl->put(kctl, uctl);
865         if (err > 0)
866                 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
867         err = 0;
868       __unlock:
869         up_read(&card->controls_rwsem);
870         kfree(uctl);
871         kfree(uinfo);
872         return err;
873 }
874
875 struct snd_mixer_oss_assign_table {
876         int oss_id;
877         const char *name;
878         int index;
879 };
880
881 static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item)
882 {
883         snd_ctl_elem_info_t *info;
884         snd_kcontrol_t *kcontrol;
885         snd_card_t *card = mixer->card;
886         int err;
887
888         down_read(&card->controls_rwsem);
889         kcontrol = snd_mixer_oss_test_id(mixer, name, index);
890         if (kcontrol == NULL) {
891                 up_read(&card->controls_rwsem);
892                 return 0;
893         }
894         info = kmalloc(sizeof(*info), GFP_KERNEL);
895         if (! info) {
896                 up_read(&card->controls_rwsem);
897                 return -ENOMEM;
898         }
899         if ((err = kcontrol->info(kcontrol, info)) < 0) {
900                 up_read(&card->controls_rwsem);
901                 kfree(info);
902                 return err;
903         }
904         slot->numid[item] = kcontrol->id.numid;
905         up_read(&card->controls_rwsem);
906         if (info->count > slot->channels)
907                 slot->channels = info->count;
908         slot->present |= 1 << item;
909         kfree(info);
910         return 0;
911 }
912
913 static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn)
914 {
915         struct slot *p = (struct slot *)chn->private_data;
916         if (p) {
917                 if (p->allocated && p->assigned) {
918                         kfree(p->assigned->name);
919                         kfree(p->assigned);
920                 }
921                 kfree(p);
922         }
923 }
924
925 static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot)
926 {
927         int idx = rslot->number; /* remember this */
928         if (rslot->private_free)
929                 rslot->private_free(rslot);
930         memset(rslot, 0, sizeof(*rslot));
931         rslot->number = idx;
932 }
933
934 /*
935  * build an OSS mixer element.
936  * ptr_allocated means the entry is dynamically allocated (change via proc file).
937  * when replace_old = 1, the old entry is replaced with the new one.
938  */
939 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)
940 {
941         struct slot slot;
942         struct slot *pslot;
943         snd_kcontrol_t *kctl;
944         snd_mixer_oss_slot_t *rslot;
945         char str[64];   
946         
947         /* check if already assigned */
948         if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
949                 return 0;
950
951         memset(&slot, 0, sizeof(slot));
952         memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
953         if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index,
954                                      SNDRV_MIXER_OSS_ITEM_GLOBAL))
955                 return 0;
956         sprintf(str, "%s Switch", ptr->name);
957         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
958                                      SNDRV_MIXER_OSS_ITEM_GSWITCH))
959                 return 0;
960         sprintf(str, "%s Route", ptr->name);
961         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
962                                      SNDRV_MIXER_OSS_ITEM_GROUTE))
963                 return 0;
964         sprintf(str, "%s Volume", ptr->name);
965         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
966                                      SNDRV_MIXER_OSS_ITEM_GVOLUME))
967                 return 0;
968         sprintf(str, "%s Playback Switch", ptr->name);
969         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
970                                      SNDRV_MIXER_OSS_ITEM_PSWITCH))
971                 return 0;
972         sprintf(str, "%s Playback Route", ptr->name);
973         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
974                                      SNDRV_MIXER_OSS_ITEM_PROUTE))
975                 return 0;
976         sprintf(str, "%s Playback Volume", ptr->name);
977         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
978                                      SNDRV_MIXER_OSS_ITEM_PVOLUME))
979                 return 0;
980         sprintf(str, "%s Capture Switch", ptr->name);
981         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
982                                      SNDRV_MIXER_OSS_ITEM_CSWITCH))
983                 return 0;
984         sprintf(str, "%s Capture Route", ptr->name);
985         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
986                                      SNDRV_MIXER_OSS_ITEM_CROUTE))
987                 return 0;
988         sprintf(str, "%s Capture Volume", ptr->name);
989         if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index,
990                                      SNDRV_MIXER_OSS_ITEM_CVOLUME))
991                 return 0;
992         down_read(&mixer->card->controls_rwsem);
993         if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
994                 snd_ctl_elem_info_t *uinfo;
995
996                 uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL);
997                 if (! uinfo) {
998                         up_read(&mixer->card->controls_rwsem);
999                         return -ENOMEM;
1000                 }
1001                         
1002                 memset(uinfo, 0, sizeof(*uinfo));
1003                 if (kctl->info(kctl, uinfo)) {
1004                         up_read(&mixer->card->controls_rwsem);
1005                         return 0;
1006                 }
1007                 strcpy(str, ptr->name);
1008                 if (!strcmp(str, "Master"))
1009                         strcpy(str, "Mix");
1010                 if (!strcmp(str, "Master Mono"))
1011                         strcpy(str, "Mix Mono");
1012                 slot.capture_item = 0;
1013                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1014                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1015                 } else {
1016                         for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1017                                 uinfo->value.enumerated.item = slot.capture_item;
1018                                 if (kctl->info(kctl, uinfo)) {
1019                                         up_read(&mixer->card->controls_rwsem);
1020                                         return 0;
1021                                 }
1022                                 if (!strcmp(uinfo->value.enumerated.name, str)) {
1023                                         slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1024                                         break;
1025                                 }
1026                         }
1027                 }
1028                 kfree(uinfo);
1029         }
1030         up_read(&mixer->card->controls_rwsem);
1031         if (slot.present != 0) {
1032                 pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL);
1033                 if (! pslot)
1034                         return -ENOMEM;
1035                 *pslot = slot;
1036                 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1037                 pslot->assigned = ptr;
1038                 pslot->allocated = ptr_allocated;
1039                 rslot = &mixer->slots[ptr->oss_id];
1040                 mixer_slot_clear(rslot);
1041                 rslot->stereo = slot.channels > 1 ? 1 : 0;
1042                 rslot->get_volume = snd_mixer_oss_get_volume1;
1043                 rslot->put_volume = snd_mixer_oss_put_volume1;
1044                 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1045                 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1046                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1047                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1048                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1049                         rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1050                         rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1051                 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1052                         mixer->mask_recsrc |= 1 << ptr->oss_id;
1053                 }
1054                 rslot->private_data = pslot;
1055                 rslot->private_free = snd_mixer_oss_slot_free;
1056                 return 1;
1057         }
1058         return 0;
1059 }
1060
1061 /*
1062  */
1063 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1064 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1065         MIXER_VOL(VOLUME),
1066         MIXER_VOL(BASS),
1067         MIXER_VOL(TREBLE),
1068         MIXER_VOL(SYNTH),
1069         MIXER_VOL(PCM),
1070         MIXER_VOL(SPEAKER),
1071         MIXER_VOL(LINE),
1072         MIXER_VOL(MIC),
1073         MIXER_VOL(CD),
1074         MIXER_VOL(IMIX),
1075         MIXER_VOL(ALTPCM),
1076         MIXER_VOL(RECLEV),
1077         MIXER_VOL(IGAIN),
1078         MIXER_VOL(OGAIN),
1079         MIXER_VOL(LINE1),
1080         MIXER_VOL(LINE2),
1081         MIXER_VOL(LINE3),
1082         MIXER_VOL(DIGITAL1),
1083         MIXER_VOL(DIGITAL2),
1084         MIXER_VOL(DIGITAL3),
1085         MIXER_VOL(PHONEIN),
1086         MIXER_VOL(PHONEOUT),
1087         MIXER_VOL(VIDEO),
1088         MIXER_VOL(RADIO),
1089         MIXER_VOL(MONITOR),
1090 };
1091         
1092 /*
1093  *  /proc interface
1094  */
1095
1096 static void snd_mixer_oss_proc_read(snd_info_entry_t *entry,
1097                                     snd_info_buffer_t * buffer)
1098 {
1099         snd_mixer_oss_t *mixer = entry->private_data;
1100         int i;
1101
1102         down(&mixer->reg_mutex);
1103         for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1104                 struct slot *p;
1105
1106                 if (! oss_mixer_names[i])
1107                         continue;
1108                 p = (struct slot *)mixer->slots[i].private_data;
1109                 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1110                 if (p && p->assigned)
1111                         snd_iprintf(buffer, "\"%s\" %d\n",
1112                                     p->assigned->name,
1113                                     p->assigned->index);
1114                 else
1115                         snd_iprintf(buffer, "\"\" 0\n");
1116         }
1117         up(&mixer->reg_mutex);
1118 }
1119
1120 static void snd_mixer_oss_proc_write(snd_info_entry_t *entry,
1121                                      snd_info_buffer_t * buffer)
1122 {
1123         snd_mixer_oss_t *mixer = entry->private_data;
1124         char line[128], str[32], idxstr[16], *cptr;
1125         int ch, idx;
1126         struct snd_mixer_oss_assign_table *tbl;
1127         struct slot *slot;
1128
1129         while (!snd_info_get_line(buffer, line, sizeof(line))) {
1130                 cptr = snd_info_get_str(str, line, sizeof(str));
1131                 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1132                         if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1133                                 break;
1134                 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1135                         snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1136                         continue;
1137                 }
1138                 cptr = snd_info_get_str(str, cptr, sizeof(str));
1139                 if (! *str) {
1140                         /* remove the entry */
1141                         down(&mixer->reg_mutex);
1142                         mixer_slot_clear(&mixer->slots[ch]);
1143                         up(&mixer->reg_mutex);
1144                         continue;
1145                 }
1146                 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1147                 idx = simple_strtoul(idxstr, NULL, 10);
1148                 if (idx >= 0x4000) { /* too big */
1149                         snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1150                         continue;
1151                 }
1152                 down(&mixer->reg_mutex);
1153                 slot = (struct slot *)mixer->slots[ch].private_data;
1154                 if (slot && slot->assigned &&
1155                     slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1156                         /* not changed */
1157                         goto __unlock;
1158                 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1159                 if (! tbl) {
1160                         snd_printk(KERN_ERR "mixer_oss: no memory\n");
1161                         goto __unlock;
1162                 }
1163                 tbl->oss_id = ch;
1164                 tbl->name = kstrdup(str, GFP_KERNEL);
1165                 if (! tbl->name) {
1166                         kfree(tbl);
1167                         goto __unlock;
1168                 }
1169                 tbl->index = idx;
1170                 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1171                         kfree(tbl->name);
1172                         kfree(tbl);
1173                 }
1174         __unlock:
1175                 up(&mixer->reg_mutex);
1176         }
1177 }
1178
1179 static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer)
1180 {
1181         snd_info_entry_t *entry;
1182
1183         entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1184                                            mixer->card->proc_root);
1185         if (! entry)
1186                 return;
1187         entry->content = SNDRV_INFO_CONTENT_TEXT;
1188         entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1189         entry->c.text.read_size = 8192;
1190         entry->c.text.read = snd_mixer_oss_proc_read;
1191         entry->c.text.write_size = 8192;
1192         entry->c.text.write = snd_mixer_oss_proc_write;
1193         entry->private_data = mixer;
1194         if (snd_info_register(entry) < 0) {
1195                 snd_info_free_entry(entry);
1196                 entry = NULL;
1197         }
1198         mixer->proc_entry = entry;
1199 }
1200
1201 static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer)
1202 {
1203         if (mixer->proc_entry) {
1204                 snd_info_unregister(mixer->proc_entry);
1205                 mixer->proc_entry = NULL;
1206         }
1207 }
1208
1209 static void snd_mixer_oss_build(snd_mixer_oss_t *mixer)
1210 {
1211         static struct snd_mixer_oss_assign_table table[] = {
1212                 { SOUND_MIXER_VOLUME,   "Master",               0 },
1213                 { SOUND_MIXER_VOLUME,   "Front",                0 }, /* fallback */
1214                 { SOUND_MIXER_BASS,     "Tone Control - Bass",  0 },
1215                 { SOUND_MIXER_TREBLE,   "Tone Control - Treble", 0 },
1216                 { SOUND_MIXER_SYNTH,    "Synth",                0 },
1217                 { SOUND_MIXER_SYNTH,    "FM",                   0 }, /* fallback */
1218                 { SOUND_MIXER_SYNTH,    "Music",                0 }, /* fallback */
1219                 { SOUND_MIXER_PCM,      "PCM",                  0 },
1220                 { SOUND_MIXER_SPEAKER,  "PC Speaker",           0 },
1221                 { SOUND_MIXER_LINE,     "Line",                 0 },
1222                 { SOUND_MIXER_MIC,      "Mic",                  0 },
1223                 { SOUND_MIXER_CD,       "CD",                   0 },
1224                 { SOUND_MIXER_IMIX,     "Monitor Mix",          0 },
1225                 { SOUND_MIXER_ALTPCM,   "PCM",                  1 },
1226                 { SOUND_MIXER_ALTPCM,   "Headphone",            0 }, /* fallback */
1227                 { SOUND_MIXER_ALTPCM,   "Wave",                 0 }, /* fallback */
1228                 { SOUND_MIXER_RECLEV,   "-- nothing --",        0 },
1229                 { SOUND_MIXER_IGAIN,    "Capture",              0 },
1230                 { SOUND_MIXER_OGAIN,    "Playback",             0 },
1231                 { SOUND_MIXER_LINE1,    "Aux",                  0 },
1232                 { SOUND_MIXER_LINE2,    "Aux",                  1 },
1233                 { SOUND_MIXER_LINE3,    "Aux",                  2 },
1234                 { SOUND_MIXER_DIGITAL1, "Digital",              0 },
1235                 { SOUND_MIXER_DIGITAL1, "IEC958",               0 }, /* fallback */
1236                 { SOUND_MIXER_DIGITAL1, "IEC958 Optical",       0 }, /* fallback */
1237                 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial",       0 }, /* fallback */
1238                 { SOUND_MIXER_DIGITAL2, "Digital",              1 },
1239                 { SOUND_MIXER_DIGITAL3, "Digital",              2 },
1240                 { SOUND_MIXER_PHONEIN,  "Phone",                0 },
1241                 { SOUND_MIXER_PHONEOUT, "Master Mono",          0 },
1242                 { SOUND_MIXER_PHONEOUT, "Phone",                0 }, /* fallback */
1243                 { SOUND_MIXER_VIDEO,    "Video",                0 },
1244                 { SOUND_MIXER_RADIO,    "Radio",                0 },
1245                 { SOUND_MIXER_MONITOR,  "Monitor",              0 }
1246         };
1247         unsigned int idx;
1248         
1249         for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1250                 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1251         if (mixer->mask_recsrc) {
1252                 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1253                 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1254         }
1255 }
1256
1257 /*
1258  *
1259  */
1260
1261 static int snd_mixer_oss_free1(void *private)
1262 {
1263         snd_mixer_oss_t *mixer = private;
1264         snd_card_t * card;
1265         int idx;
1266  
1267         snd_assert(mixer != NULL, return -ENXIO);
1268         card = mixer->card;
1269         snd_assert(mixer == card->mixer_oss, return -ENXIO);
1270         card->mixer_oss = NULL;
1271         for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1272                 snd_mixer_oss_slot_t *chn = &mixer->slots[idx];
1273                 if (chn->private_free)
1274                         chn->private_free(chn);
1275         }
1276         kfree(mixer);
1277         return 0;
1278 }
1279
1280 static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd)
1281 {
1282         snd_mixer_oss_t *mixer;
1283
1284         if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1285                 char name[128];
1286                 int idx, err;
1287
1288                 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1289                 if (mixer == NULL)
1290                         return -ENOMEM;
1291                 init_MUTEX(&mixer->reg_mutex);
1292                 sprintf(name, "mixer%i%i", card->number, 0);
1293                 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1294                                                    card, 0,
1295                                                    &snd_mixer_oss_reg,
1296                                                    name)) < 0) {
1297                         snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1298                                    card->number, 0);
1299                         kfree(mixer);
1300                         return err;
1301                 }
1302                 mixer->oss_dev_alloc = 1;
1303                 mixer->card = card;
1304                 if (*card->mixername)
1305                         strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1306                 else
1307                         strlcpy(mixer->name, name, sizeof(mixer->name));
1308 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1309                 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1310                                       card->number,
1311                                       mixer->name);
1312 #endif
1313                 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1314                         mixer->slots[idx].number = idx;
1315                 card->mixer_oss = mixer;
1316                 snd_mixer_oss_build(mixer);
1317                 snd_mixer_oss_proc_init(mixer);
1318         } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) {
1319                 mixer = card->mixer_oss;
1320                 if (mixer == NULL || !mixer->oss_dev_alloc)
1321                         return 0;
1322                 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1323                 mixer->oss_dev_alloc = 0;
1324         } else {                /* free */
1325                 mixer = card->mixer_oss;
1326                 if (mixer == NULL)
1327                         return 0;
1328 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1329                 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1330 #endif
1331                 if (mixer->oss_dev_alloc)
1332                         snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1333                 snd_mixer_oss_proc_done(mixer);
1334                 return snd_mixer_oss_free1(mixer);
1335         }
1336         return 0;
1337 }
1338
1339 static int __init alsa_mixer_oss_init(void)
1340 {
1341         int idx;
1342         
1343         snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1344         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1345                 if (snd_cards[idx])
1346                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1347         }
1348         return 0;
1349 }
1350
1351 static void __exit alsa_mixer_oss_exit(void)
1352 {
1353         int idx;
1354
1355         snd_mixer_oss_notify_callback = NULL;
1356         for (idx = 0; idx < SNDRV_CARDS; idx++) {
1357                 if (snd_cards[idx])
1358                         snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1359         }
1360 }
1361
1362 module_init(alsa_mixer_oss_init)
1363 module_exit(alsa_mixer_oss_exit)
1364
1365 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);