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ALSA: Fix card refcount unbalance
[deliverable/linux.git] / sound / core / oss / mixer_oss.c
CommitLineData
1da177e4
LT		 1/*
2 * OSS emulation layer for the mixer interface
c1017a4c 3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
1da177e4
LT		 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
1da177e4 22#include <linux/init.h>
1da177e4
LT		 23#include <linux/slab.h>
24#include <linux/time.h>
543537bd 25#include <linux/string.h>
da155d5b 26#include <linux/module.h>
1da177e4
LT		 27#include <sound/core.h>
28#include <sound/minors.h>
29#include <sound/control.h>
30#include <sound/info.h>
31#include <sound/mixer_oss.h>
32#include <linux/soundcard.h>
33
34#define OSS_ALSAEMULVER _SIOR ('M', 249, int)
35
c1017a4c 36MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
1da177e4
LT		 37MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
38MODULE_LICENSE("GPL");
39MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
40
41static int snd_mixer_oss_open(struct inode *inode, struct file *file)
42{
f956b4a3
TI		 43 struct snd_card *card;
44 struct snd_mixer_oss_file *fmixer;
1da177e4
LT		 45 int err;
46
02f4865f
TI		 47 err = nonseekable_open(inode, file);
48 if (err < 0)
49 return err;
50
f87135f5
CL		 51 card = snd_lookup_oss_minor_data(iminor(inode),
52 SNDRV_OSS_DEVICE_TYPE_MIXER);
53 if (card == NULL)
1da177e4 54 return -ENODEV;
a0830dbd
TI		 55 if (card->mixer_oss == NULL) {
56 snd_card_unref(card);
1da177e4 57 return -ENODEV;
a0830dbd 58 }
1da177e4 59 err = snd_card_file_add(card, file);
a0830dbd
TI		 60 if (err < 0) {
61 snd_card_unref(card);
1da177e4 62 return err;
a0830dbd 63 }
ca2c0966 64 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
1da177e4
LT		 65 if (fmixer == NULL) {
66 snd_card_file_remove(card, file);
a0830dbd 67 snd_card_unref(card);
1da177e4
LT		 68 return -ENOMEM;
69 }
70 fmixer->card = card;
71 fmixer->mixer = card->mixer_oss;
72 file->private_data = fmixer;
73 if (!try_module_get(card->module)) {
74 kfree(fmixer);
75 snd_card_file_remove(card, file);
a0830dbd 76 snd_card_unref(card);
1da177e4
LT		 77 return -EFAULT;
78 }
8bb4d9ce 79 snd_card_unref(card);
1da177e4
LT		 80 return 0;
81}
82
83static int snd_mixer_oss_release(struct inode *inode, struct file *file)
84{
f956b4a3 85 struct snd_mixer_oss_file *fmixer;
1da177e4
LT		 86
87 if (file->private_data) {
9fe856e4 88 fmixer = file->private_data;
1da177e4
LT		 89 module_put(fmixer->card->module);
90 snd_card_file_remove(fmixer->card, file);
91 kfree(fmixer);
92 }
93 return 0;
94}
95
f956b4a3 96static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
1da177e4
LT		 97 mixer_info __user *_info)
98{
f956b4a3
TI		 99 struct snd_card *card = fmixer->card;
100 struct snd_mixer_oss *mixer = fmixer->mixer;
1da177e4
LT		 101 struct mixer_info info;
102
103 memset(&info, 0, sizeof(info));
104 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
105 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
106 info.modify_counter = card->mixer_oss_change_count;
107 if (copy_to_user(_info, &info, sizeof(info)))
108 return -EFAULT;
109 return 0;
110}
111
f956b4a3 112static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
1da177e4
LT		 113 _old_mixer_info __user *_info)
114{
f956b4a3
TI		 115 struct snd_card *card = fmixer->card;
116 struct snd_mixer_oss *mixer = fmixer->mixer;
1da177e4
LT		 117 _old_mixer_info info;
118
119 memset(&info, 0, sizeof(info));
120 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
121 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
122 if (copy_to_user(_info, &info, sizeof(info)))
123 return -EFAULT;
124 return 0;
125}
126
f956b4a3 127static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
1da177e4 128{
f956b4a3 129 struct snd_mixer_oss *mixer = fmixer->mixer;
1da177e4
LT		 130 int result = 0;
131
132 if (mixer == NULL)
133 return -EIO;
134 if (mixer->get_recsrc && mixer->put_recsrc)
135 result |= SOUND_CAP_EXCL_INPUT;
136 return result;
137}
138
f956b4a3 139static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
1da177e4 140{
f956b4a3
TI		 141 struct snd_mixer_oss *mixer = fmixer->mixer;
142 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 143 int result = 0, chn;
144
145 if (mixer == NULL)
146 return -EIO;
147 for (chn = 0; chn < 31; chn++) {
148 pslot = &mixer->slots[chn];
149 if (pslot->put_volume || pslot->put_recsrc)
150 result |= 1 << chn;
151 }
152 return result;
153}
154
f956b4a3 155static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
1da177e4 156{
f956b4a3
TI		 157 struct snd_mixer_oss *mixer = fmixer->mixer;
158 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 159 int result = 0, chn;
160
161 if (mixer == NULL)
162 return -EIO;
163 for (chn = 0; chn < 31; chn++) {
164 pslot = &mixer->slots[chn];
165 if (pslot->put_volume && pslot->stereo)
166 result |= 1 << chn;
167 }
168 return result;
169}
170
f956b4a3 171static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
1da177e4 172{
f956b4a3 173 struct snd_mixer_oss *mixer = fmixer->mixer;
1da177e4
LT		 174 int result = 0;
175
176 if (mixer == NULL)
177 return -EIO;
178 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
179 result = mixer->mask_recsrc;
180 } else {
f956b4a3 181 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 182 int chn;
183 for (chn = 0; chn < 31; chn++) {
184 pslot = &mixer->slots[chn];
185 if (pslot->put_recsrc)
186 result |= 1 << chn;
187 }
188 }
189 return result;
190}
191
f956b4a3 192static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
1da177e4 193{
f956b4a3 194 struct snd_mixer_oss *mixer = fmixer->mixer;
1da177e4
LT		 195 int result = 0;
196
197 if (mixer == NULL)
198 return -EIO;
199 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
200 int err;
fea952e5
CL		 201 unsigned int index;
202 if ((err = mixer->get_recsrc(fmixer, &index)) < 0)
1da177e4 203 return err;
fea952e5 204 result = 1 << index;
1da177e4 205 } else {
f956b4a3 206 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 207 int chn;
208 for (chn = 0; chn < 31; chn++) {
209 pslot = &mixer->slots[chn];
210 if (pslot->get_recsrc) {
211 int active = 0;
212 pslot->get_recsrc(fmixer, pslot, &active);
213 if (active)
214 result |= 1 << chn;
215 }
216 }
217 }
218 return mixer->oss_recsrc = result;
219}
220
f956b4a3 221static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
1da177e4 222{
f956b4a3
TI		 223 struct snd_mixer_oss *mixer = fmixer->mixer;
224 struct snd_mixer_oss_slot *pslot;
1da177e4 225 int chn, active;
fea952e5 226 unsigned int index;
1da177e4
LT		 227 int result = 0;
228
229 if (mixer == NULL)
230 return -EIO;
231 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
232 if (recsrc & ~mixer->oss_recsrc)
233 recsrc &= ~mixer->oss_recsrc;
234 mixer->put_recsrc(fmixer, ffz(~recsrc));
fea952e5
CL		 235 mixer->get_recsrc(fmixer, &index);
236 result = 1 << index;
1da177e4
LT		 237 }
238 for (chn = 0; chn < 31; chn++) {
239 pslot = &mixer->slots[chn];
240 if (pslot->put_recsrc) {
241 active = (recsrc & (1 << chn)) ? 1 : 0;
242 pslot->put_recsrc(fmixer, pslot, active);
243 }
244 }
245 if (! result) {
246 for (chn = 0; chn < 31; chn++) {
247 pslot = &mixer->slots[chn];
248 if (pslot->get_recsrc) {
249 active = 0;
250 pslot->get_recsrc(fmixer, pslot, &active);
251 if (active)
252 result |= 1 << chn;
253 }
254 }
255 }
256 return result;
257}
258
f956b4a3 259static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
1da177e4 260{
f956b4a3
TI		 261 struct snd_mixer_oss *mixer = fmixer->mixer;
262 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 263 int result = 0, left, right;
264
265 if (mixer == NULL || slot > 30)
266 return -EIO;
267 pslot = &mixer->slots[slot];
268 left = pslot->volume[0];
269 right = pslot->volume[1];
270 if (pslot->get_volume)
271 result = pslot->get_volume(fmixer, pslot, &left, &right);
272 if (!pslot->stereo)
273 right = left;
7eaa943c
TI		 274 if (snd_BUG_ON(left < 0 || left > 100))
275 return -EIO;
276 if (snd_BUG_ON(right < 0 || right > 100))
277 return -EIO;
1da177e4
LT		 278 if (result >= 0) {
279 pslot->volume[0] = left;
280 pslot->volume[1] = right;
281 result = (left & 0xff) | ((right & 0xff) << 8);
282 }
283 return result;
284}
285
f956b4a3 286static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
1da177e4
LT		 287 int slot, int volume)
288{
f956b4a3
TI		 289 struct snd_mixer_oss *mixer = fmixer->mixer;
290 struct snd_mixer_oss_slot *pslot;
1da177e4
LT		 291 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
292
293 if (mixer == NULL || slot > 30)
294 return -EIO;
295 pslot = &mixer->slots[slot];
296 if (left > 100)
297 left = 100;
298 if (right > 100)
299 right = 100;
300 if (!pslot->stereo)
301 right = left;
302 if (pslot->put_volume)
303 result = pslot->put_volume(fmixer, pslot, left, right);
304 if (result < 0)
305 return result;
306 pslot->volume[0] = left;
307 pslot->volume[1] = right;
308 return (left & 0xff) | ((right & 0xff) << 8);
309}
310
f956b4a3 311static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
1da177e4
LT		 312{
313 void __user *argp = (void __user *)arg;
314 int __user *p = argp;
315 int tmp;
316
7eaa943c
TI		 317 if (snd_BUG_ON(!fmixer))
318 return -ENXIO;
1da177e4
LT		 319 if (((cmd >> 8) & 0xff) == 'M') {
320 switch (cmd) {
321 case SOUND_MIXER_INFO:
322 return snd_mixer_oss_info(fmixer, argp);
323 case SOUND_OLD_MIXER_INFO:
324 return snd_mixer_oss_info_obsolete(fmixer, argp);
325 case SOUND_MIXER_WRITE_RECSRC:
326 if (get_user(tmp, p))
327 return -EFAULT;
328 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
329 if (tmp < 0)
330 return tmp;
331 return put_user(tmp, p);
332 case OSS_GETVERSION:
333 return put_user(SNDRV_OSS_VERSION, p);
334 case OSS_ALSAEMULVER:
335 return put_user(1, p);
336 case SOUND_MIXER_READ_DEVMASK:
337 tmp = snd_mixer_oss_devmask(fmixer);
338 if (tmp < 0)
339 return tmp;
340 return put_user(tmp, p);
341 case SOUND_MIXER_READ_STEREODEVS:
342 tmp = snd_mixer_oss_stereodevs(fmixer);
343 if (tmp < 0)
344 return tmp;
345 return put_user(tmp, p);
346 case SOUND_MIXER_READ_RECMASK:
347 tmp = snd_mixer_oss_recmask(fmixer);
348 if (tmp < 0)
349 return tmp;
350 return put_user(tmp, p);
351 case SOUND_MIXER_READ_CAPS:
352 tmp = snd_mixer_oss_caps(fmixer);
353 if (tmp < 0)
354 return tmp;
355 return put_user(tmp, p);
356 case SOUND_MIXER_READ_RECSRC:
357 tmp = snd_mixer_oss_get_recsrc(fmixer);
358 if (tmp < 0)
359 return tmp;
360 return put_user(tmp, p);
361 }
362 }
363 if (cmd & SIOC_IN) {
364 if (get_user(tmp, p))
365 return -EFAULT;
366 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
367 if (tmp < 0)
368 return tmp;
369 return put_user(tmp, p);
370 } else if (cmd & SIOC_OUT) {
371 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
372 if (tmp < 0)
373 return tmp;
374 return put_user(tmp, p);
375 }
376 return -ENXIO;
377}
378
379static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
380{
9fe856e4 381 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg);
1da177e4
LT		 382}
383
f956b4a3 384int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
1da177e4 385{
f956b4a3 386 struct snd_mixer_oss_file fmixer;
1da177e4 387
7eaa943c
TI		 388 if (snd_BUG_ON(!card))
389 return -ENXIO;
1da177e4
LT		 390 if (card->mixer_oss == NULL)
391 return -ENXIO;
392 memset(&fmixer, 0, sizeof(fmixer));
393 fmixer.card = card;
394 fmixer.mixer = card->mixer_oss;
395 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
396}
397
398#ifdef CONFIG_COMPAT
399/* all compatible */
400#define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
401#else
402#define snd_mixer_oss_ioctl_compat NULL
403#endif
404
405/*
406 * REGISTRATION PART
407 */
408
9c2e08c5 409static const struct file_operations snd_mixer_oss_f_ops =
1da177e4
LT		 410{
411 .owner = THIS_MODULE,
412 .open = snd_mixer_oss_open,
413 .release = snd_mixer_oss_release,
02f4865f 414 .llseek = no_llseek,
1da177e4
LT		 415 .unlocked_ioctl = snd_mixer_oss_ioctl,
416 .compat_ioctl = snd_mixer_oss_ioctl_compat,
417};
418
1da177e4
LT		 419/*
420 * utilities
421 */
422
423static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
424{
425 long orange = omax - omin, nrange = nmax - nmin;
426
427 if (orange == 0)
428 return 0;
429 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
430}
431
432/* convert from alsa native to oss values (0-100) */
433static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
434{
435 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
436 return *old;
437 return snd_mixer_oss_conv(val, min, max, 0, 100);
438}
439
440/* convert from oss to alsa native values */
441static long snd_mixer_oss_conv2(long val, long min, long max)
442{
443 return snd_mixer_oss_conv(val, 0, 100, min, max);
444}
445
446#if 0
f956b4a3 447static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
1da177e4 448{
f956b4a3 449 struct snd_mixer_oss *mixer = card->mixer_oss;
1da177e4
LT		 450 if (mixer)
451 mixer->mask_recsrc |= 1 << slot;
452}
453
f956b4a3 454static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
1da177e4 455{
f956b4a3 456 struct snd_mixer_oss *mixer = card->mixer_oss;
1da177e4
LT		 457 if (mixer && (mixer->mask_recsrc & (1 << slot)))
458 return 1;
459 return 0;
460}
461#endif
462
463#define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
464
465#define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
466#define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
467#define SNDRV_MIXER_OSS_ITEM_GROUTE 2
468#define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
469#define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
470#define SNDRV_MIXER_OSS_ITEM_PROUTE 5
471#define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
472#define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
473#define SNDRV_MIXER_OSS_ITEM_CROUTE 8
474#define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
475#define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
476
477#define SNDRV_MIXER_OSS_ITEM_COUNT 11
478
479#define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
480#define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
481#define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
482#define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
483#define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
484#define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
485#define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
486#define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
487#define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
488#define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
489#define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
490
491struct slot {
492 unsigned int signature;
493 unsigned int present;
494 unsigned int channels;
495 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
496 unsigned int capture_item;
497 struct snd_mixer_oss_assign_table *assigned;
498 unsigned int allocated: 1;
499};
500
501#define ID_UNKNOWN ((unsigned int)-1)
502
f956b4a3 503static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
1da177e4 504{
f956b4a3
TI		 505 struct snd_card *card = mixer->card;
506 struct snd_ctl_elem_id id;
1da177e4
LT		 507
508 memset(&id, 0, sizeof(id));
509 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
f92766bc 510 strlcpy(id.name, name, sizeof(id.name));
1da177e4
LT		 511 id.index = index;
512 return snd_ctl_find_id(card, &id);
513}
514
f956b4a3
TI		 515static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
516 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 517 unsigned int numid,
518 int *left, int *right)
519{
f956b4a3
TI		 520 struct snd_ctl_elem_info *uinfo;
521 struct snd_ctl_elem_value *uctl;
522 struct snd_kcontrol *kctl;
523 struct snd_card *card = fmixer->card;
1da177e4
LT		 524
525 if (numid == ID_UNKNOWN)
526 return;
527 down_read(&card->controls_rwsem);
528 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
529 up_read(&card->controls_rwsem);
530 return;
531 }
ca2c0966
TI		 532 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
533 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 534 if (uinfo == NULL || uctl == NULL)
535 goto __unalloc;
7c22f1aa
TI		 536 if (kctl->info(kctl, uinfo))
537 goto __unalloc;
538 if (kctl->get(kctl, uctl))
539 goto __unalloc;
540 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
541 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
542 goto __unalloc;
1da177e4
LT		 543 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
544 if (uinfo->count > 1)
545 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
546 __unalloc:
547 up_read(&card->controls_rwsem);
548 kfree(uctl);
549 kfree(uinfo);
550}
551
f956b4a3
TI		 552static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
553 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 554 unsigned int numid,
555 int *left, int *right,
556 int route)
557{
f956b4a3
TI		 558 struct snd_ctl_elem_info *uinfo;
559 struct snd_ctl_elem_value *uctl;
560 struct snd_kcontrol *kctl;
561 struct snd_card *card = fmixer->card;
1da177e4
LT		 562
563 if (numid == ID_UNKNOWN)
564 return;
565 down_read(&card->controls_rwsem);
566 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
567 up_read(&card->controls_rwsem);
568 return;
569 }
ca2c0966
TI		 570 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
571 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 572 if (uinfo == NULL || uctl == NULL)
573 goto __unalloc;
7c22f1aa
TI		 574 if (kctl->info(kctl, uinfo))
575 goto __unalloc;
576 if (kctl->get(kctl, uctl))
577 goto __unalloc;
1da177e4
LT		 578 if (!uctl->value.integer.value[0]) {
579 *left = 0;
580 if (uinfo->count == 1)
581 *right = 0;
582 }
583 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
584 *right = 0;
585 __unalloc:
586 up_read(&card->controls_rwsem);
587 kfree(uctl);
588 kfree(uinfo);
589}
590
f956b4a3
TI		 591static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
592 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 593 int *left, int *right)
594{
9fe856e4 595 struct slot *slot = pslot->private_data;
1da177e4
LT		 596
597 *left = *right = 100;
598 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
599 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
600 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
601 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
602 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
603 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
604 }
605 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
606 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
607 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
608 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
609 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
610 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
611 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
612 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
613 }
614 return 0;
615}
616
f956b4a3
TI		 617static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
618 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 619 unsigned int numid,
620 int left, int right)
621{
f956b4a3
TI		 622 struct snd_ctl_elem_info *uinfo;
623 struct snd_ctl_elem_value *uctl;
624 struct snd_kcontrol *kctl;
625 struct snd_card *card = fmixer->card;
1da177e4
LT		 626 int res;
627
628 if (numid == ID_UNKNOWN)
629 return;
630 down_read(&card->controls_rwsem);
838c364f
JK		 631 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
632 up_read(&card->controls_rwsem);
1da177e4 633 return;
838c364f 634 }
ca2c0966
TI		 635 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
636 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 637 if (uinfo == NULL || uctl == NULL)
638 goto __unalloc;
7c22f1aa
TI		 639 if (kctl->info(kctl, uinfo))
640 goto __unalloc;
641 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
642 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
643 goto __unalloc;
1da177e4
LT		 644 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
645 if (uinfo->count > 1)
646 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
7c22f1aa
TI		 647 if ((res = kctl->put(kctl, uctl)) < 0)
648 goto __unalloc;
1da177e4
LT		 649 if (res > 0)
650 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
651 __unalloc:
652 up_read(&card->controls_rwsem);
653 kfree(uctl);
654 kfree(uinfo);
655}
656
f956b4a3
TI		 657static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
658 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 659 unsigned int numid,
660 int left, int right,
661 int route)
662{
f956b4a3
TI		 663 struct snd_ctl_elem_info *uinfo;
664 struct snd_ctl_elem_value *uctl;
665 struct snd_kcontrol *kctl;
666 struct snd_card *card = fmixer->card;
1da177e4
LT		 667 int res;
668
669 if (numid == ID_UNKNOWN)
670 return;
671 down_read(&card->controls_rwsem);
672 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
838c364f 673 up_read(&card->controls_rwsem);
1da177e4
LT		 674 return;
675 }
ca2c0966
TI		 676 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
677 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 678 if (uinfo == NULL || uctl == NULL)
679 goto __unalloc;
7c22f1aa
TI		 680 if (kctl->info(kctl, uinfo))
681 goto __unalloc;
1da177e4
LT		 682 if (uinfo->count > 1) {
683 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
684 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
685 if (route) {
686 uctl->value.integer.value[1] =
687 uctl->value.integer.value[2] = 0;
688 }
689 } else {
690 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
691 }
7c22f1aa
TI		 692 if ((res = kctl->put(kctl, uctl)) < 0)
693 goto __unalloc;
1da177e4
LT		 694 if (res > 0)
695 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
696 __unalloc:
697 up_read(&card->controls_rwsem);
698 kfree(uctl);
699 kfree(uinfo);
700}
701
f956b4a3
TI		 702static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
703 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 704 int left, int right)
705{
9fe856e4 706 struct slot *slot = pslot->private_data;
1da177e4
LT		 707
708 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
709 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
710 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
711 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
36c7b833
VM		 712 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) {
713 snd_mixer_oss_put_volume1_vol(fmixer, pslot,
714 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
1da177e4
LT		 715 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
716 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
717 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
718 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
719 }
720 if (left || right) {
721 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
722 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
d2e8e529
DM		 723 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH)
724 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
1da177e4
LT		 725 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
726 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
727 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
728 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
d2e8e529
DM		 729 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE)
730 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
1da177e4
LT		 731 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
732 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
733 } else {
734 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
735 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
d2e8e529
DM		 736 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
737 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0);
1da177e4
LT		 738 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
739 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
740 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
741 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
d2e8e529
DM		 742 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
743 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1);
1da177e4
LT		 744 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
746 }
747 }
748 return 0;
749}
750
f956b4a3
TI		 751static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
752 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 753 int *active)
754{
9fe856e4 755 struct slot *slot = pslot->private_data;
1da177e4
LT		 756 int left, right;
757
758 left = right = 1;
759 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
760 *active = (left || right) ? 1 : 0;
761 return 0;
762}
763
f956b4a3
TI		 764static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
765 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 766 int *active)
767{
9fe856e4 768 struct slot *slot = pslot->private_data;
1da177e4
LT		 769 int left, right;
770
771 left = right = 1;
772 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
773 *active = (left || right) ? 1 : 0;
774 return 0;
775}
776
f956b4a3
TI		 777static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
778 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 779 int active)
780{
9fe856e4 781 struct slot *slot = pslot->private_data;
1da177e4
LT		 782
783 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
784 return 0;
785}
786
f956b4a3
TI		 787static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
788 struct snd_mixer_oss_slot *pslot,
1da177e4
LT		 789 int active)
790{
9fe856e4 791 struct slot *slot = pslot->private_data;
1da177e4
LT		 792
793 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
794 return 0;
795}
796
f956b4a3 797static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
1da177e4 798{
f956b4a3
TI		 799 struct snd_card *card = fmixer->card;
800 struct snd_mixer_oss *mixer = fmixer->mixer;
801 struct snd_kcontrol *kctl;
802 struct snd_mixer_oss_slot *pslot;
1da177e4 803 struct slot *slot;
f956b4a3
TI		 804 struct snd_ctl_elem_info *uinfo;
805 struct snd_ctl_elem_value *uctl;
1da177e4
LT		 806 int err, idx;
807
ca2c0966
TI		 808 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
809 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 810 if (uinfo == NULL || uctl == NULL) {
811 err = -ENOMEM;
838c364f 812 goto __free_only;
1da177e4
LT		 813 }
814 down_read(&card->controls_rwsem);
815 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
7c22f1aa
TI		 816 if (! kctl) {
817 err = -ENOENT;
818 goto __unlock;
819 }
820 if ((err = kctl->info(kctl, uinfo)) < 0)
821 goto __unlock;
822 if ((err = kctl->get(kctl, uctl)) < 0)
823 goto __unlock;
1da177e4
LT		 824 for (idx = 0; idx < 32; idx++) {
825 if (!(mixer->mask_recsrc & (1 << idx)))
826 continue;
827 pslot = &mixer->slots[idx];
9fe856e4 828 slot = pslot->private_data;
1da177e4
LT		 829 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
830 continue;
831 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
832 continue;
833 if (slot->capture_item == uctl->value.enumerated.item[0]) {
834 *active_index = idx;
835 break;
836 }
837 }
838 err = 0;
839 __unlock:
840 up_read(&card->controls_rwsem);
838c364f 841 __free_only:
1da177e4
LT		 842 kfree(uctl);
843 kfree(uinfo);
844 return err;
845}
846
f956b4a3 847static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
1da177e4 848{
f956b4a3
TI		 849 struct snd_card *card = fmixer->card;
850 struct snd_mixer_oss *mixer = fmixer->mixer;
851 struct snd_kcontrol *kctl;
852 struct snd_mixer_oss_slot *pslot;
1da177e4 853 struct slot *slot = NULL;
f956b4a3
TI		 854 struct snd_ctl_elem_info *uinfo;
855 struct snd_ctl_elem_value *uctl;
1da177e4
LT		 856 int err;
857 unsigned int idx;
858
ca2c0966
TI		 859 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
860 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
1da177e4
LT		 861 if (uinfo == NULL || uctl == NULL) {
862 err = -ENOMEM;
838c364f 863 goto __free_only;
1da177e4
LT		 864 }
865 down_read(&card->controls_rwsem);
866 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
7c22f1aa
TI		 867 if (! kctl) {
868 err = -ENOENT;
869 goto __unlock;
870 }
871 if ((err = kctl->info(kctl, uinfo)) < 0)
872 goto __unlock;
1da177e4
LT		 873 for (idx = 0; idx < 32; idx++) {
874 if (!(mixer->mask_recsrc & (1 << idx)))
875 continue;
876 pslot = &mixer->slots[idx];
9fe856e4 877 slot = pslot->private_data;
1da177e4
LT		 878 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
879 continue;
880 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
881 continue;
882 if (idx == active_index)
883 break;
884 slot = NULL;
885 }
7c22f1aa
TI		 886 if (! slot)
887 goto __unlock;
1da177e4
LT		 888 for (idx = 0; idx < uinfo->count; idx++)
889 uctl->value.enumerated.item[idx] = slot->capture_item;
7c22f1aa 890 err = kctl->put(kctl, uctl);
1da177e4
LT		 891 if (err > 0)
892 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
893 err = 0;
894 __unlock:
895 up_read(&card->controls_rwsem);
838c364f 896 __free_only:
1da177e4
LT		 897 kfree(uctl);
898 kfree(uinfo);
899 return err;
900}
901
902struct snd_mixer_oss_assign_table {
903 int oss_id;
904 const char *name;
905 int index;
906};
907
f956b4a3 908static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
1da177e4 909{
f956b4a3
TI		 910 struct snd_ctl_elem_info *info;
911 struct snd_kcontrol *kcontrol;
912 struct snd_card *card = mixer->card;
1da177e4
LT		 913 int err;
914
915 down_read(&card->controls_rwsem);
916 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
917 if (kcontrol == NULL) {
918 up_read(&card->controls_rwsem);
919 return 0;
920 }
921 info = kmalloc(sizeof(*info), GFP_KERNEL);
922 if (! info) {
923 up_read(&card->controls_rwsem);
924 return -ENOMEM;
925 }
926 if ((err = kcontrol->info(kcontrol, info)) < 0) {
927 up_read(&card->controls_rwsem);
928 kfree(info);
929 return err;
930 }
931 slot->numid[item] = kcontrol->id.numid;
932 up_read(&card->controls_rwsem);
933 if (info->count > slot->channels)
934 slot->channels = info->count;
935 slot->present |= 1 << item;
936 kfree(info);
937 return 0;
938}
939
f956b4a3 940static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
1da177e4 941{
9fe856e4 942 struct slot *p = chn->private_data;
1da177e4
LT		 943 if (p) {
944 if (p->allocated && p->assigned) {
945 kfree(p->assigned->name);
946 kfree(p->assigned);
947 }
948 kfree(p);
949 }
950}
951
f956b4a3 952static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
1da177e4
LT		 953{
954 int idx = rslot->number; /* remember this */
955 if (rslot->private_free)
956 rslot->private_free(rslot);
957 memset(rslot, 0, sizeof(*rslot));
958 rslot->number = idx;
959}
960
22a860a9
JD		 961/* In a separate function to keep gcc 3.2 happy - do NOT merge this in
962 snd_mixer_oss_build_input! */
963static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
964 struct snd_mixer_oss_assign_table *ptr,
965 struct slot *slot)
966{
967 char str[64];
968 int err;
969
970 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
971 SNDRV_MIXER_OSS_ITEM_GLOBAL);
972 if (err)
973 return err;
974 sprintf(str, "%s Switch", ptr->name);
975 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
976 SNDRV_MIXER_OSS_ITEM_GSWITCH);
977 if (err)
978 return err;
979 sprintf(str, "%s Route", ptr->name);
980 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
981 SNDRV_MIXER_OSS_ITEM_GROUTE);
982 if (err)
983 return err;
984 sprintf(str, "%s Volume", ptr->name);
985 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
986 SNDRV_MIXER_OSS_ITEM_GVOLUME);
987 if (err)
988 return err;
989 sprintf(str, "%s Playback Switch", ptr->name);
990 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
991 SNDRV_MIXER_OSS_ITEM_PSWITCH);
992 if (err)
993 return err;
994 sprintf(str, "%s Playback Route", ptr->name);
995 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
996 SNDRV_MIXER_OSS_ITEM_PROUTE);
997 if (err)
998 return err;
999 sprintf(str, "%s Playback Volume", ptr->name);
1000 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1001 SNDRV_MIXER_OSS_ITEM_PVOLUME);
1002 if (err)
1003 return err;
1004 sprintf(str, "%s Capture Switch", ptr->name);
1005 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1006 SNDRV_MIXER_OSS_ITEM_CSWITCH);
1007 if (err)
1008 return err;
1009 sprintf(str, "%s Capture Route", ptr->name);
1010 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1011 SNDRV_MIXER_OSS_ITEM_CROUTE);
1012 if (err)
1013 return err;
1014 sprintf(str, "%s Capture Volume", ptr->name);
1015 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
1016 SNDRV_MIXER_OSS_ITEM_CVOLUME);
1017 if (err)
1018 return err;
1019
1020 return 0;
1021}
1022
1da177e4
LT		 1023/*
1024 * build an OSS mixer element.
1025 * ptr_allocated means the entry is dynamically allocated (change via proc file).
1026 * when replace_old = 1, the old entry is replaced with the new one.
1027 */
f956b4a3 1028static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
1da177e4
LT		 1029{
1030 struct slot slot;
1031 struct slot *pslot;
f956b4a3
TI		 1032 struct snd_kcontrol *kctl;
1033 struct snd_mixer_oss_slot *rslot;
1da177e4
LT		 1034 char str[64];
1035
1036 /* check if already assigned */
1037 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1038 return 0;
1039
1040 memset(&slot, 0, sizeof(slot));
1041 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
22a860a9 1042 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1da177e4
LT		 1043 return 0;
1044 down_read(&mixer->card->controls_rwsem);
1045 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
f956b4a3 1046 struct snd_ctl_elem_info *uinfo;
1da177e4 1047
59feddb2 1048 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1da177e4
LT		 1049 if (! uinfo) {
1050 up_read(&mixer->card->controls_rwsem);
1051 return -ENOMEM;
1052 }
1053
1da177e4
LT		 1054 if (kctl->info(kctl, uinfo)) {
1055 up_read(&mixer->card->controls_rwsem);
1f3b1407 1056 kfree(uinfo);
1da177e4
LT		 1057 return 0;
1058 }
1059 strcpy(str, ptr->name);
1060 if (!strcmp(str, "Master"))
1061 strcpy(str, "Mix");
1062 if (!strcmp(str, "Master Mono"))
1063 strcpy(str, "Mix Mono");
1064 slot.capture_item = 0;
1065 if (!strcmp(uinfo->value.enumerated.name, str)) {
1066 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1067 } else {
1068 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1069 uinfo->value.enumerated.item = slot.capture_item;
1070 if (kctl->info(kctl, uinfo)) {
1071 up_read(&mixer->card->controls_rwsem);
1f3b1407 1072 kfree(uinfo);
1da177e4
LT		 1073 return 0;
1074 }
1075 if (!strcmp(uinfo->value.enumerated.name, str)) {
1076 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1077 break;
1078 }
1079 }
1080 }
1081 kfree(uinfo);
1082 }
1083 up_read(&mixer->card->controls_rwsem);
1084 if (slot.present != 0) {
5cbded58 1085 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
7c22f1aa
TI		 1086 if (! pslot)
1087 return -ENOMEM;
1da177e4
LT		 1088 *pslot = slot;
1089 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1090 pslot->assigned = ptr;
1091 pslot->allocated = ptr_allocated;
1092 rslot = &mixer->slots[ptr->oss_id];
1093 mixer_slot_clear(rslot);
1094 rslot->stereo = slot.channels > 1 ? 1 : 0;
1095 rslot->get_volume = snd_mixer_oss_get_volume1;
1096 rslot->put_volume = snd_mixer_oss_put_volume1;
1097 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1098 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1099 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1100 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1101 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1102 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1103 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1104 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1105 mixer->mask_recsrc |= 1 << ptr->oss_id;
1106 }
1107 rslot->private_data = pslot;
1108 rslot->private_free = snd_mixer_oss_slot_free;
1109 return 1;
1110 }
1111 return 0;
1112}
1113
04f141a8 1114#ifdef CONFIG_PROC_FS
1da177e4
LT		 1115/*
1116 */
1117#define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1118static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1119 MIXER_VOL(VOLUME),
1120 MIXER_VOL(BASS),
1121 MIXER_VOL(TREBLE),
1122 MIXER_VOL(SYNTH),
1123 MIXER_VOL(PCM),
1124 MIXER_VOL(SPEAKER),
1125 MIXER_VOL(LINE),
1126 MIXER_VOL(MIC),
1127 MIXER_VOL(CD),
1128 MIXER_VOL(IMIX),
1129 MIXER_VOL(ALTPCM),
1130 MIXER_VOL(RECLEV),
1131 MIXER_VOL(IGAIN),
1132 MIXER_VOL(OGAIN),
1133 MIXER_VOL(LINE1),
1134 MIXER_VOL(LINE2),
1135 MIXER_VOL(LINE3),
1136 MIXER_VOL(DIGITAL1),
1137 MIXER_VOL(DIGITAL2),
1138 MIXER_VOL(DIGITAL3),
1139 MIXER_VOL(PHONEIN),
1140 MIXER_VOL(PHONEOUT),
1141 MIXER_VOL(VIDEO),
1142 MIXER_VOL(RADIO),
1143 MIXER_VOL(MONITOR),
1144};
1145
1146/*
1147 * /proc interface
1148 */
1149
f956b4a3
TI		 1150static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1151 struct snd_info_buffer *buffer)
1da177e4 1152{
f956b4a3 1153 struct snd_mixer_oss *mixer = entry->private_data;
1da177e4
LT		 1154 int i;
1155
1a60d4c5 1156 mutex_lock(&mixer->reg_mutex);
1da177e4
LT		 1157 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1158 struct slot *p;
1159
1160 if (! oss_mixer_names[i])
1161 continue;
1162 p = (struct slot *)mixer->slots[i].private_data;
1163 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1164 if (p && p->assigned)
1165 snd_iprintf(buffer, "\"%s\" %d\n",
1166 p->assigned->name,
1167 p->assigned->index);
1168 else
1169 snd_iprintf(buffer, "\"\" 0\n");
1170 }
1a60d4c5 1171 mutex_unlock(&mixer->reg_mutex);
1da177e4
LT		 1172}
1173
f956b4a3
TI		 1174static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1175 struct snd_info_buffer *buffer)
1da177e4 1176{
f956b4a3 1177 struct snd_mixer_oss *mixer = entry->private_data;
4f7454a9
TI		 1178 char line[128], str[32], idxstr[16];
1179 const char *cptr;
1da177e4
LT		 1180 int ch, idx;
1181 struct snd_mixer_oss_assign_table *tbl;
1182 struct slot *slot;
1183
1184 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1185 cptr = snd_info_get_str(str, line, sizeof(str));
1186 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1187 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1188 break;
1189 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1190 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1191 continue;
1192 }
1193 cptr = snd_info_get_str(str, cptr, sizeof(str));
1194 if (! *str) {
1195 /* remove the entry */
1a60d4c5 1196 mutex_lock(&mixer->reg_mutex);
1da177e4 1197 mixer_slot_clear(&mixer->slots[ch]);
1a60d4c5 1198 mutex_unlock(&mixer->reg_mutex);
1da177e4
LT		 1199 continue;
1200 }
1201 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1202 idx = simple_strtoul(idxstr, NULL, 10);
1203 if (idx >= 0x4000) { /* too big */
1204 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1205 continue;
1206 }
1a60d4c5 1207 mutex_lock(&mixer->reg_mutex);
1da177e4
LT		 1208 slot = (struct slot *)mixer->slots[ch].private_data;
1209 if (slot && slot->assigned &&
1210 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1211 /* not changed */
1212 goto __unlock;
1213 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1214 if (! tbl) {
1215 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1216 goto __unlock;
1217 }
1218 tbl->oss_id = ch;
543537bd 1219 tbl->name = kstrdup(str, GFP_KERNEL);
1da177e4
LT		 1220 if (! tbl->name) {
1221 kfree(tbl);
1222 goto __unlock;
1223 }
1224 tbl->index = idx;
1225 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1226 kfree(tbl->name);
1227 kfree(tbl);
1228 }
1229 __unlock:
1a60d4c5 1230 mutex_unlock(&mixer->reg_mutex);
1da177e4
LT		 1231 }
1232}
1233
f956b4a3 1234static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1da177e4 1235{
f956b4a3 1236 struct snd_info_entry *entry;
1da177e4
LT		 1237
1238 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1239 mixer->card->proc_root);
1240 if (! entry)
1241 return;
1242 entry->content = SNDRV_INFO_CONTENT_TEXT;
1243 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1da177e4 1244 entry->c.text.read = snd_mixer_oss_proc_read;
1da177e4
LT		 1245 entry->c.text.write = snd_mixer_oss_proc_write;
1246 entry->private_data = mixer;
1247 if (snd_info_register(entry) < 0) {
1248 snd_info_free_entry(entry);
1249 entry = NULL;
1250 }
1251 mixer->proc_entry = entry;
1252}
1253
f956b4a3 1254static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1da177e4 1255{
746d4a02
TI		 1256 snd_info_free_entry(mixer->proc_entry);
1257 mixer->proc_entry = NULL;
1da177e4 1258}
04f141a8
TI		 1259#else /* !CONFIG_PROC_FS */
1260#define snd_mixer_oss_proc_init(mix)
1261#define snd_mixer_oss_proc_done(mix)
1262#endif /* CONFIG_PROC_FS */
1da177e4 1263
f956b4a3 1264static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1da177e4
LT		 1265{
1266 static struct snd_mixer_oss_assign_table table[] = {
1267 { SOUND_MIXER_VOLUME, "Master", 0 },
1268 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1269 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1270 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1271 { SOUND_MIXER_SYNTH, "Synth", 0 },
1272 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1273 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1274 { SOUND_MIXER_PCM, "PCM", 0 },
d355c82a
JK		 1275 { SOUND_MIXER_SPEAKER, "Beep", 0 },
1276 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */
ad1cd745 1277 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */
1da177e4
LT		 1278 { SOUND_MIXER_LINE, "Line", 0 },
1279 { SOUND_MIXER_MIC, "Mic", 0 },
1280 { SOUND_MIXER_CD, "CD", 0 },
1281 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1282 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1283 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1284 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1285 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1286 { SOUND_MIXER_IGAIN, "Capture", 0 },
1287 { SOUND_MIXER_OGAIN, "Playback", 0 },
1288 { SOUND_MIXER_LINE1, "Aux", 0 },
1289 { SOUND_MIXER_LINE2, "Aux", 1 },
1290 { SOUND_MIXER_LINE3, "Aux", 2 },
1291 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1292 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1293 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1294 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1295 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1296 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1297 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1298 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
6c4cc3a8
TI		 1299 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/
1300 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/
1da177e4
LT		 1301 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1302 { SOUND_MIXER_VIDEO, "Video", 0 },
1303 { SOUND_MIXER_RADIO, "Radio", 0 },
1304 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1305 };
1306 unsigned int idx;
1307
1308 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1309 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1310 if (mixer->mask_recsrc) {
1311 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1312 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1313 }
1314}
1315
1316/*
1317 *
1318 */
1319
1320static int snd_mixer_oss_free1(void *private)
1321{
f956b4a3
TI		 1322 struct snd_mixer_oss *mixer = private;
1323 struct snd_card *card;
1da177e4
LT		 1324 int idx;
1325
7eaa943c
TI		 1326 if (!mixer)
1327 return 0;
1da177e4 1328 card = mixer->card;
7eaa943c
TI		 1329 if (snd_BUG_ON(mixer != card->mixer_oss))
1330 return -ENXIO;
1da177e4
LT		 1331 card->mixer_oss = NULL;
1332 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
f956b4a3 1333 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1da177e4
LT		 1334 if (chn->private_free)
1335 chn->private_free(chn);
1336 }
1337 kfree(mixer);
1338 return 0;
1339}
1340
f956b4a3 1341static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1da177e4 1342{
f956b4a3 1343 struct snd_mixer_oss *mixer;
1da177e4
LT		 1344
1345 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1346 char name[128];
1347 int idx, err;
1348
1349 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1350 if (mixer == NULL)
1351 return -ENOMEM;
1a60d4c5 1352 mutex_init(&mixer->reg_mutex);
1da177e4
LT		 1353 sprintf(name, "mixer%i%i", card->number, 0);
1354 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1355 card, 0,
f87135f5 1356 &snd_mixer_oss_f_ops, card,
1da177e4 1357 name)) < 0) {
d3d579f8
TI		 1358 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1359 card->number, 0);
1da177e4
LT		 1360 kfree(mixer);
1361 return err;
1362 }
1363 mixer->oss_dev_alloc = 1;
1364 mixer->card = card;
1365 if (*card->mixername)
1366 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1367 else
1368 strlcpy(mixer->name, name, sizeof(mixer->name));
1369#ifdef SNDRV_OSS_INFO_DEV_MIXERS
1370 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1371 card->number,
1372 mixer->name);
1373#endif
1374 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1375 mixer->slots[idx].number = idx;
1376 card->mixer_oss = mixer;
1377 snd_mixer_oss_build(mixer);
1378 snd_mixer_oss_proc_init(mixer);
c461482c 1379 } else {
1da177e4
LT		 1380 mixer = card->mixer_oss;
1381 if (mixer == NULL)
1382 return 0;
c461482c 1383 if (mixer->oss_dev_alloc) {
1da177e4 1384#ifdef SNDRV_OSS_INFO_DEV_MIXERS
c461482c 1385 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1da177e4 1386#endif
1da177e4 1387 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
c461482c
TI		 1388 mixer->oss_dev_alloc = 0;
1389 }
1390 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1391 return 0;
1da177e4
LT		 1392 snd_mixer_oss_proc_done(mixer);
1393 return snd_mixer_oss_free1(mixer);
1394 }
1395 return 0;
1396}
1397
1398static int __init alsa_mixer_oss_init(void)
1399{
1400 int idx;
1401
1402 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1403 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1404 if (snd_cards[idx])
1405 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1406 }
1407 return 0;
1408}
1409
1410static void __exit alsa_mixer_oss_exit(void)
1411{
1412 int idx;
1413
1414 snd_mixer_oss_notify_callback = NULL;
1415 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1416 if (snd_cards[idx])
1417 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1418 }
1419}
1420
1421module_init(alsa_mixer_oss_init)
1422module_exit(alsa_mixer_oss_exit)
1423
1424EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
Linux kernel - Deliverables
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