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x86: allow TSC clock source on AMD Fam10h and some cleanup
[wrt350n-kernel.git] / sound / core / oss / mixer_oss.c
blobc5a5ab9cae8cace6edc773a4eb9a3e9b3a700f9a
1 /*
2 * OSS emulation layer for the mixer interface
3 * Copyright (c) by Jaroslav Kysela <perex@perex.cz>
4 *
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22 #include <sound/driver.h>
23 #include <linux/init.h>
24 #include <linux/slab.h>
25 #include <linux/time.h>
26 #include <linux/string.h>
27 #include <sound/core.h>
28 #include <sound/minors.h>
29 #include <sound/control.h>
30 #include <sound/info.h>
31 #include <sound/mixer_oss.h>
32 #include <linux/soundcard.h>
33
34 #define OSS_ALSAEMULVER _SIOR ('M', 249, int)
35
36 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>");
37 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA.");
38 MODULE_LICENSE("GPL");
39 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER);
40
41 static int snd_mixer_oss_open(struct inode *inode, struct file *file)
42 {
43 struct snd_card *card;
44 struct snd_mixer_oss_file *fmixer;
45 int err;
46
47 card = snd_lookup_oss_minor_data(iminor(inode),
48 SNDRV_OSS_DEVICE_TYPE_MIXER);
49 if (card == NULL)
50 return -ENODEV;
51 if (card->mixer_oss == NULL)
52 return -ENODEV;
53 err = snd_card_file_add(card, file);
54 if (err < 0)
55 return err;
56 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL);
57 if (fmixer == NULL) {
58 snd_card_file_remove(card, file);
59 return -ENOMEM;
60 }
61 fmixer->card = card;
62 fmixer->mixer = card->mixer_oss;
63 file->private_data = fmixer;
64 if (!try_module_get(card->module)) {
65 kfree(fmixer);
66 snd_card_file_remove(card, file);
67 return -EFAULT;
68 }
69 return 0;
70 }
71
72 static int snd_mixer_oss_release(struct inode *inode, struct file *file)
73 {
74 struct snd_mixer_oss_file *fmixer;
75
76 if (file->private_data) {
77 fmixer = (struct snd_mixer_oss_file *) file->private_data;
78 module_put(fmixer->card->module);
79 snd_card_file_remove(fmixer->card, file);
80 kfree(fmixer);
81 }
82 return 0;
83 }
84
85 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer,
86 mixer_info __user *_info)
87 {
88 struct snd_card *card = fmixer->card;
89 struct snd_mixer_oss *mixer = fmixer->mixer;
90 struct mixer_info info;
91
92 memset(&info, 0, sizeof(info));
93 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
94 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
95 info.modify_counter = card->mixer_oss_change_count;
96 if (copy_to_user(_info, &info, sizeof(info)))
97 return -EFAULT;
98 return 0;
99 }
100
101 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer,
102 _old_mixer_info __user *_info)
103 {
104 struct snd_card *card = fmixer->card;
105 struct snd_mixer_oss *mixer = fmixer->mixer;
106 _old_mixer_info info;
107
108 memset(&info, 0, sizeof(info));
109 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id));
110 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name));
111 if (copy_to_user(_info, &info, sizeof(info)))
112 return -EFAULT;
113 return 0;
114 }
115
116 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer)
117 {
118 struct snd_mixer_oss *mixer = fmixer->mixer;
119 int result = 0;
120
121 if (mixer == NULL)
122 return -EIO;
123 if (mixer->get_recsrc && mixer->put_recsrc)
124 result |= SOUND_CAP_EXCL_INPUT;
125 return result;
126 }
127
128 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer)
129 {
130 struct snd_mixer_oss *mixer = fmixer->mixer;
131 struct snd_mixer_oss_slot *pslot;
132 int result = 0, chn;
133
134 if (mixer == NULL)
135 return -EIO;
136 for (chn = 0; chn < 31; chn++) {
137 pslot = &mixer->slots[chn];
138 if (pslot->put_volume || pslot->put_recsrc)
139 result |= 1 << chn;
140 }
141 return result;
142 }
143
144 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer)
145 {
146 struct snd_mixer_oss *mixer = fmixer->mixer;
147 struct snd_mixer_oss_slot *pslot;
148 int result = 0, chn;
149
150 if (mixer == NULL)
151 return -EIO;
152 for (chn = 0; chn < 31; chn++) {
153 pslot = &mixer->slots[chn];
154 if (pslot->put_volume && pslot->stereo)
155 result |= 1 << chn;
156 }
157 return result;
158 }
159
160 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer)
161 {
162 struct snd_mixer_oss *mixer = fmixer->mixer;
163 int result = 0;
164
165 if (mixer == NULL)
166 return -EIO;
167 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
168 result = mixer->mask_recsrc;
169 } else {
170 struct snd_mixer_oss_slot *pslot;
171 int chn;
172 for (chn = 0; chn < 31; chn++) {
173 pslot = &mixer->slots[chn];
174 if (pslot->put_recsrc)
175 result |= 1 << chn;
176 }
177 }
178 return result;
179 }
180
181 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer)
182 {
183 struct snd_mixer_oss *mixer = fmixer->mixer;
184 int result = 0;
185
186 if (mixer == NULL)
187 return -EIO;
188 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */
189 int err;
190 if ((err = mixer->get_recsrc(fmixer, &result)) < 0)
191 return err;
192 result = 1 << result;
193 } else {
194 struct snd_mixer_oss_slot *pslot;
195 int chn;
196 for (chn = 0; chn < 31; chn++) {
197 pslot = &mixer->slots[chn];
198 if (pslot->get_recsrc) {
199 int active = 0;
200 pslot->get_recsrc(fmixer, pslot, &active);
201 if (active)
202 result |= 1 << chn;
203 }
204 }
205 }
206 return mixer->oss_recsrc = result;
207 }
208
209 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc)
210 {
211 struct snd_mixer_oss *mixer = fmixer->mixer;
212 struct snd_mixer_oss_slot *pslot;
213 int chn, active;
214 int result = 0;
215
216 if (mixer == NULL)
217 return -EIO;
218 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */
219 if (recsrc & ~mixer->oss_recsrc)
220 recsrc &= ~mixer->oss_recsrc;
221 mixer->put_recsrc(fmixer, ffz(~recsrc));
222 mixer->get_recsrc(fmixer, &result);
223 result = 1 << result;
224 }
225 for (chn = 0; chn < 31; chn++) {
226 pslot = &mixer->slots[chn];
227 if (pslot->put_recsrc) {
228 active = (recsrc & (1 << chn)) ? 1 : 0;
229 pslot->put_recsrc(fmixer, pslot, active);
230 }
231 }
232 if (! result) {
233 for (chn = 0; chn < 31; chn++) {
234 pslot = &mixer->slots[chn];
235 if (pslot->get_recsrc) {
236 active = 0;
237 pslot->get_recsrc(fmixer, pslot, &active);
238 if (active)
239 result |= 1 << chn;
240 }
241 }
242 }
243 return result;
244 }
245
246 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot)
247 {
248 struct snd_mixer_oss *mixer = fmixer->mixer;
249 struct snd_mixer_oss_slot *pslot;
250 int result = 0, left, right;
251
252 if (mixer == NULL || slot > 30)
253 return -EIO;
254 pslot = &mixer->slots[slot];
255 left = pslot->volume[0];
256 right = pslot->volume[1];
257 if (pslot->get_volume)
258 result = pslot->get_volume(fmixer, pslot, &left, &right);
259 if (!pslot->stereo)
260 right = left;
261 snd_assert(left >= 0 && left <= 100, return -EIO);
262 snd_assert(right >= 0 && right <= 100, return -EIO);
263 if (result >= 0) {
264 pslot->volume[0] = left;
265 pslot->volume[1] = right;
266 result = (left & 0xff) | ((right & 0xff) << 8);
267 }
268 return result;
269 }
270
271 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer,
272 int slot, int volume)
273 {
274 struct snd_mixer_oss *mixer = fmixer->mixer;
275 struct snd_mixer_oss_slot *pslot;
276 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff;
277
278 if (mixer == NULL || slot > 30)
279 return -EIO;
280 pslot = &mixer->slots[slot];
281 if (left > 100)
282 left = 100;
283 if (right > 100)
284 right = 100;
285 if (!pslot->stereo)
286 right = left;
287 if (pslot->put_volume)
288 result = pslot->put_volume(fmixer, pslot, left, right);
289 if (result < 0)
290 return result;
291 pslot->volume[0] = left;
292 pslot->volume[1] = right;
293 return (left & 0xff) | ((right & 0xff) << 8);
294 }
295
296 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg)
297 {
298 void __user *argp = (void __user *)arg;
299 int __user *p = argp;
300 int tmp;
301
302 snd_assert(fmixer != NULL, return -ENXIO);
303 if (((cmd >> 8) & 0xff) == 'M') {
304 switch (cmd) {
305 case SOUND_MIXER_INFO:
306 return snd_mixer_oss_info(fmixer, argp);
307 case SOUND_OLD_MIXER_INFO:
308 return snd_mixer_oss_info_obsolete(fmixer, argp);
309 case SOUND_MIXER_WRITE_RECSRC:
310 if (get_user(tmp, p))
311 return -EFAULT;
312 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp);
313 if (tmp < 0)
314 return tmp;
315 return put_user(tmp, p);
316 case OSS_GETVERSION:
317 return put_user(SNDRV_OSS_VERSION, p);
318 case OSS_ALSAEMULVER:
319 return put_user(1, p);
320 case SOUND_MIXER_READ_DEVMASK:
321 tmp = snd_mixer_oss_devmask(fmixer);
322 if (tmp < 0)
323 return tmp;
324 return put_user(tmp, p);
325 case SOUND_MIXER_READ_STEREODEVS:
326 tmp = snd_mixer_oss_stereodevs(fmixer);
327 if (tmp < 0)
328 return tmp;
329 return put_user(tmp, p);
330 case SOUND_MIXER_READ_RECMASK:
331 tmp = snd_mixer_oss_recmask(fmixer);
332 if (tmp < 0)
333 return tmp;
334 return put_user(tmp, p);
335 case SOUND_MIXER_READ_CAPS:
336 tmp = snd_mixer_oss_caps(fmixer);
337 if (tmp < 0)
338 return tmp;
339 return put_user(tmp, p);
340 case SOUND_MIXER_READ_RECSRC:
341 tmp = snd_mixer_oss_get_recsrc(fmixer);
342 if (tmp < 0)
343 return tmp;
344 return put_user(tmp, p);
345 }
346 }
347 if (cmd & SIOC_IN) {
348 if (get_user(tmp, p))
349 return -EFAULT;
350 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp);
351 if (tmp < 0)
352 return tmp;
353 return put_user(tmp, p);
354 } else if (cmd & SIOC_OUT) {
355 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff);
356 if (tmp < 0)
357 return tmp;
358 return put_user(tmp, p);
359 }
360 return -ENXIO;
361 }
362
363 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
364 {
365 return snd_mixer_oss_ioctl1((struct snd_mixer_oss_file *) file->private_data, cmd, arg);
366 }
367
368 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg)
369 {
370 struct snd_mixer_oss_file fmixer;
371
372 snd_assert(card != NULL, return -ENXIO);
373 if (card->mixer_oss == NULL)
374 return -ENXIO;
375 memset(&fmixer, 0, sizeof(fmixer));
376 fmixer.card = card;
377 fmixer.mixer = card->mixer_oss;
378 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg);
379 }
380
381 #ifdef CONFIG_COMPAT
382 /* all compatible */
383 #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl
384 #else
385 #define snd_mixer_oss_ioctl_compat NULL
386 #endif
387
388 /*
389 * REGISTRATION PART
390 */
391
392 static const struct file_operations snd_mixer_oss_f_ops =
393 {
394 .owner = THIS_MODULE,
395 .open = snd_mixer_oss_open,
396 .release = snd_mixer_oss_release,
397 .unlocked_ioctl = snd_mixer_oss_ioctl,
398 .compat_ioctl = snd_mixer_oss_ioctl_compat,
399 };
400
401 /*
402 * utilities
403 */
404
405 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax)
406 {
407 long orange = omax - omin, nrange = nmax - nmin;
408
409 if (orange == 0)
410 return 0;
411 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin;
412 }
413
414 /* convert from alsa native to oss values (0-100) */
415 static long snd_mixer_oss_conv1(long val, long min, long max, int *old)
416 {
417 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max))
418 return *old;
419 return snd_mixer_oss_conv(val, min, max, 0, 100);
420 }
421
422 /* convert from oss to alsa native values */
423 static long snd_mixer_oss_conv2(long val, long min, long max)
424 {
425 return snd_mixer_oss_conv(val, 0, 100, min, max);
426 }
427
428 #if 0
429 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot)
430 {
431 struct snd_mixer_oss *mixer = card->mixer_oss;
432 if (mixer)
433 mixer->mask_recsrc |= 1 << slot;
434 }
435
436 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot)
437 {
438 struct snd_mixer_oss *mixer = card->mixer_oss;
439 if (mixer && (mixer->mask_recsrc & (1 << slot)))
440 return 1;
441 return 0;
442 }
443 #endif
444
445 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250
446
447 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0
448 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1
449 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2
450 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3
451 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4
452 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5
453 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6
454 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7
455 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8
456 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9
457 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10
458
459 #define SNDRV_MIXER_OSS_ITEM_COUNT 11
460
461 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0)
462 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1)
463 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2)
464 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3)
465 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4)
466 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5)
467 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6)
468 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7)
469 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8)
470 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9)
471 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10)
472
473 struct slot {
474 unsigned int signature;
475 unsigned int present;
476 unsigned int channels;
477 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT];
478 unsigned int capture_item;
479 struct snd_mixer_oss_assign_table *assigned;
480 unsigned int allocated: 1;
481 };
482
483 #define ID_UNKNOWN ((unsigned int)-1)
484
485 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index)
486 {
487 struct snd_card *card = mixer->card;
488 struct snd_ctl_elem_id id;
489
490 memset(&id, 0, sizeof(id));
491 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER;
492 strcpy(id.name, name);
493 id.index = index;
494 return snd_ctl_find_id(card, &id);
495 }
496
497 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer,
498 struct snd_mixer_oss_slot *pslot,
499 unsigned int numid,
500 int *left, int *right)
501 {
502 struct snd_ctl_elem_info *uinfo;
503 struct snd_ctl_elem_value *uctl;
504 struct snd_kcontrol *kctl;
505 struct snd_card *card = fmixer->card;
506
507 if (numid == ID_UNKNOWN)
508 return;
509 down_read(&card->controls_rwsem);
510 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
511 up_read(&card->controls_rwsem);
512 return;
513 }
514 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
515 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
516 if (uinfo == NULL || uctl == NULL)
517 goto __unalloc;
518 if (kctl->info(kctl, uinfo))
519 goto __unalloc;
520 if (kctl->get(kctl, uctl))
521 goto __unalloc;
522 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
523 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
524 goto __unalloc;
525 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]);
526 if (uinfo->count > 1)
527 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]);
528 __unalloc:
529 up_read(&card->controls_rwsem);
530 kfree(uctl);
531 kfree(uinfo);
532 }
533
534 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer,
535 struct snd_mixer_oss_slot *pslot,
536 unsigned int numid,
537 int *left, int *right,
538 int route)
539 {
540 struct snd_ctl_elem_info *uinfo;
541 struct snd_ctl_elem_value *uctl;
542 struct snd_kcontrol *kctl;
543 struct snd_card *card = fmixer->card;
544
545 if (numid == ID_UNKNOWN)
546 return;
547 down_read(&card->controls_rwsem);
548 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
549 up_read(&card->controls_rwsem);
550 return;
551 }
552 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
553 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
554 if (uinfo == NULL || uctl == NULL)
555 goto __unalloc;
556 if (kctl->info(kctl, uinfo))
557 goto __unalloc;
558 if (kctl->get(kctl, uctl))
559 goto __unalloc;
560 if (!uctl->value.integer.value[0]) {
561 *left = 0;
562 if (uinfo->count == 1)
563 *right = 0;
564 }
565 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1])
566 *right = 0;
567 __unalloc:
568 up_read(&card->controls_rwsem);
569 kfree(uctl);
570 kfree(uinfo);
571 }
572
573 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer,
574 struct snd_mixer_oss_slot *pslot,
575 int *left, int *right)
576 {
577 struct slot *slot = (struct slot *)pslot->private_data;
578
579 *left = *right = 100;
580 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
581 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
582 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
583 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
584 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
585 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
586 }
587 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
588 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
589 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
590 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
591 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
592 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
593 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
594 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
595 }
596 return 0;
597 }
598
599 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer,
600 struct snd_mixer_oss_slot *pslot,
601 unsigned int numid,
602 int left, int right)
603 {
604 struct snd_ctl_elem_info *uinfo;
605 struct snd_ctl_elem_value *uctl;
606 struct snd_kcontrol *kctl;
607 struct snd_card *card = fmixer->card;
608 int res;
609
610 if (numid == ID_UNKNOWN)
611 return;
612 down_read(&card->controls_rwsem);
613 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL)
614 return;
615 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
616 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
617 if (uinfo == NULL || uctl == NULL)
618 goto __unalloc;
619 if (kctl->info(kctl, uinfo))
620 goto __unalloc;
621 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN &&
622 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1)
623 goto __unalloc;
624 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max);
625 if (uinfo->count > 1)
626 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max);
627 if ((res = kctl->put(kctl, uctl)) < 0)
628 goto __unalloc;
629 if (res > 0)
630 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
631 __unalloc:
632 up_read(&card->controls_rwsem);
633 kfree(uctl);
634 kfree(uinfo);
635 }
636
637 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer,
638 struct snd_mixer_oss_slot *pslot,
639 unsigned int numid,
640 int left, int right,
641 int route)
642 {
643 struct snd_ctl_elem_info *uinfo;
644 struct snd_ctl_elem_value *uctl;
645 struct snd_kcontrol *kctl;
646 struct snd_card *card = fmixer->card;
647 int res;
648
649 if (numid == ID_UNKNOWN)
650 return;
651 down_read(&card->controls_rwsem);
652 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) {
653 up_read(&fmixer->card->controls_rwsem);
654 return;
655 }
656 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
657 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
658 if (uinfo == NULL || uctl == NULL)
659 goto __unalloc;
660 if (kctl->info(kctl, uinfo))
661 goto __unalloc;
662 if (uinfo->count > 1) {
663 uctl->value.integer.value[0] = left > 0 ? 1 : 0;
664 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0;
665 if (route) {
666 uctl->value.integer.value[1] =
667 uctl->value.integer.value[2] = 0;
668 }
669 } else {
670 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0;
671 }
672 if ((res = kctl->put(kctl, uctl)) < 0)
673 goto __unalloc;
674 if (res > 0)
675 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
676 __unalloc:
677 up_read(&card->controls_rwsem);
678 kfree(uctl);
679 kfree(uinfo);
680 }
681
682 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer,
683 struct snd_mixer_oss_slot *pslot,
684 int left, int right)
685 {
686 struct slot *slot = (struct slot *)pslot->private_data;
687
688 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) {
689 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right);
690 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME)
691 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right);
692 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) {
693 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right);
694 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) {
695 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right);
696 }
697 if (left || right) {
698 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH)
699 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
700 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH)
701 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
702 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE)
703 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
704 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE)
705 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
706 } else {
707 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) {
708 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0);
709 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) {
710 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0);
711 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) {
712 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1);
713 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) {
714 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1);
715 }
716 }
717 return 0;
718 }
719
720 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
721 struct snd_mixer_oss_slot *pslot,
722 int *active)
723 {
724 struct slot *slot = (struct slot *)pslot->private_data;
725 int left, right;
726
727 left = right = 1;
728 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0);
729 *active = (left || right) ? 1 : 0;
730 return 0;
731 }
732
733 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer,
734 struct snd_mixer_oss_slot *pslot,
735 int *active)
736 {
737 struct slot *slot = (struct slot *)pslot->private_data;
738 int left, right;
739
740 left = right = 1;
741 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1);
742 *active = (left || right) ? 1 : 0;
743 return 0;
744 }
745
746 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer,
747 struct snd_mixer_oss_slot *pslot,
748 int active)
749 {
750 struct slot *slot = (struct slot *)pslot->private_data;
751
752 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0);
753 return 0;
754 }
755
756 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer,
757 struct snd_mixer_oss_slot *pslot,
758 int active)
759 {
760 struct slot *slot = (struct slot *)pslot->private_data;
761
762 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1);
763 return 0;
764 }
765
766 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index)
767 {
768 struct snd_card *card = fmixer->card;
769 struct snd_mixer_oss *mixer = fmixer->mixer;
770 struct snd_kcontrol *kctl;
771 struct snd_mixer_oss_slot *pslot;
772 struct slot *slot;
773 struct snd_ctl_elem_info *uinfo;
774 struct snd_ctl_elem_value *uctl;
775 int err, idx;
776
777 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
778 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
779 if (uinfo == NULL || uctl == NULL) {
780 err = -ENOMEM;
781 goto __unlock;
782 }
783 down_read(&card->controls_rwsem);
784 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
785 if (! kctl) {
786 err = -ENOENT;
787 goto __unlock;
788 }
789 if ((err = kctl->info(kctl, uinfo)) < 0)
790 goto __unlock;
791 if ((err = kctl->get(kctl, uctl)) < 0)
792 goto __unlock;
793 for (idx = 0; idx < 32; idx++) {
794 if (!(mixer->mask_recsrc & (1 << idx)))
795 continue;
796 pslot = &mixer->slots[idx];
797 slot = (struct slot *)pslot->private_data;
798 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
799 continue;
800 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
801 continue;
802 if (slot->capture_item == uctl->value.enumerated.item[0]) {
803 *active_index = idx;
804 break;
805 }
806 }
807 err = 0;
808 __unlock:
809 up_read(&card->controls_rwsem);
810 kfree(uctl);
811 kfree(uinfo);
812 return err;
813 }
814
815 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index)
816 {
817 struct snd_card *card = fmixer->card;
818 struct snd_mixer_oss *mixer = fmixer->mixer;
819 struct snd_kcontrol *kctl;
820 struct snd_mixer_oss_slot *pslot;
821 struct slot *slot = NULL;
822 struct snd_ctl_elem_info *uinfo;
823 struct snd_ctl_elem_value *uctl;
824 int err;
825 unsigned int idx;
826
827 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
828 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL);
829 if (uinfo == NULL || uctl == NULL) {
830 err = -ENOMEM;
831 goto __unlock;
832 }
833 down_read(&card->controls_rwsem);
834 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0);
835 if (! kctl) {
836 err = -ENOENT;
837 goto __unlock;
838 }
839 if ((err = kctl->info(kctl, uinfo)) < 0)
840 goto __unlock;
841 for (idx = 0; idx < 32; idx++) {
842 if (!(mixer->mask_recsrc & (1 << idx)))
843 continue;
844 pslot = &mixer->slots[idx];
845 slot = (struct slot *)pslot->private_data;
846 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE)
847 continue;
848 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE))
849 continue;
850 if (idx == active_index)
851 break;
852 slot = NULL;
853 }
854 if (! slot)
855 goto __unlock;
856 for (idx = 0; idx < uinfo->count; idx++)
857 uctl->value.enumerated.item[idx] = slot->capture_item;
858 err = kctl->put(kctl, uctl);
859 if (err > 0)
860 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id);
861 err = 0;
862 __unlock:
863 up_read(&card->controls_rwsem);
864 kfree(uctl);
865 kfree(uinfo);
866 return err;
867 }
868
869 struct snd_mixer_oss_assign_table {
870 int oss_id;
871 const char *name;
872 int index;
873 };
874
875 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item)
876 {
877 struct snd_ctl_elem_info *info;
878 struct snd_kcontrol *kcontrol;
879 struct snd_card *card = mixer->card;
880 int err;
881
882 down_read(&card->controls_rwsem);
883 kcontrol = snd_mixer_oss_test_id(mixer, name, index);
884 if (kcontrol == NULL) {
885 up_read(&card->controls_rwsem);
886 return 0;
887 }
888 info = kmalloc(sizeof(*info), GFP_KERNEL);
889 if (! info) {
890 up_read(&card->controls_rwsem);
891 return -ENOMEM;
892 }
893 if ((err = kcontrol->info(kcontrol, info)) < 0) {
894 up_read(&card->controls_rwsem);
895 kfree(info);
896 return err;
897 }
898 slot->numid[item] = kcontrol->id.numid;
899 up_read(&card->controls_rwsem);
900 if (info->count > slot->channels)
901 slot->channels = info->count;
902 slot->present |= 1 << item;
903 kfree(info);
904 return 0;
905 }
906
907 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn)
908 {
909 struct slot *p = (struct slot *)chn->private_data;
910 if (p) {
911 if (p->allocated && p->assigned) {
912 kfree(p->assigned->name);
913 kfree(p->assigned);
914 }
915 kfree(p);
916 }
917 }
918
919 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot)
920 {
921 int idx = rslot->number; /* remember this */
922 if (rslot->private_free)
923 rslot->private_free(rslot);
924 memset(rslot, 0, sizeof(*rslot));
925 rslot->number = idx;
926 }
927
928 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in
929 snd_mixer_oss_build_input! */
930 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer,
931 struct snd_mixer_oss_assign_table *ptr,
932 struct slot *slot)
933 {
934 char str[64];
935 int err;
936
937 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index,
938 SNDRV_MIXER_OSS_ITEM_GLOBAL);
939 if (err)
940 return err;
941 sprintf(str, "%s Switch", ptr->name);
942 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
943 SNDRV_MIXER_OSS_ITEM_GSWITCH);
944 if (err)
945 return err;
946 sprintf(str, "%s Route", ptr->name);
947 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
948 SNDRV_MIXER_OSS_ITEM_GROUTE);
949 if (err)
950 return err;
951 sprintf(str, "%s Volume", ptr->name);
952 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
953 SNDRV_MIXER_OSS_ITEM_GVOLUME);
954 if (err)
955 return err;
956 sprintf(str, "%s Playback Switch", ptr->name);
957 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
958 SNDRV_MIXER_OSS_ITEM_PSWITCH);
959 if (err)
960 return err;
961 sprintf(str, "%s Playback Route", ptr->name);
962 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
963 SNDRV_MIXER_OSS_ITEM_PROUTE);
964 if (err)
965 return err;
966 sprintf(str, "%s Playback Volume", ptr->name);
967 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
968 SNDRV_MIXER_OSS_ITEM_PVOLUME);
969 if (err)
970 return err;
971 sprintf(str, "%s Capture Switch", ptr->name);
972 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
973 SNDRV_MIXER_OSS_ITEM_CSWITCH);
974 if (err)
975 return err;
976 sprintf(str, "%s Capture Route", ptr->name);
977 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
978 SNDRV_MIXER_OSS_ITEM_CROUTE);
979 if (err)
980 return err;
981 sprintf(str, "%s Capture Volume", ptr->name);
982 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index,
983 SNDRV_MIXER_OSS_ITEM_CVOLUME);
984 if (err)
985 return err;
986
987 return 0;
988 }
989
990 /*
991 * build an OSS mixer element.
992 * ptr_allocated means the entry is dynamically allocated (change via proc file).
993 * when replace_old = 1, the old entry is replaced with the new one.
994 */
995 static int snd_mixer_oss_build_input(struct snd_mixer_oss *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old)
996 {
997 struct slot slot;
998 struct slot *pslot;
999 struct snd_kcontrol *kctl;
1000 struct snd_mixer_oss_slot *rslot;
1001 char str[64];
1002
1003 /* check if already assigned */
1004 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old)
1005 return 0;
1006
1007 memset(&slot, 0, sizeof(slot));
1008 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */
1009 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot))
1010 return 0;
1011 down_read(&mixer->card->controls_rwsem);
1012 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) {
1013 struct snd_ctl_elem_info *uinfo;
1014
1015 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL);
1016 if (! uinfo) {
1017 up_read(&mixer->card->controls_rwsem);
1018 return -ENOMEM;
1019 }
1020
1021 if (kctl->info(kctl, uinfo)) {
1022 up_read(&mixer->card->controls_rwsem);
1023 return 0;
1024 }
1025 strcpy(str, ptr->name);
1026 if (!strcmp(str, "Master"))
1027 strcpy(str, "Mix");
1028 if (!strcmp(str, "Master Mono"))
1029 strcpy(str, "Mix Mono");
1030 slot.capture_item = 0;
1031 if (!strcmp(uinfo->value.enumerated.name, str)) {
1032 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1033 } else {
1034 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) {
1035 uinfo->value.enumerated.item = slot.capture_item;
1036 if (kctl->info(kctl, uinfo)) {
1037 up_read(&mixer->card->controls_rwsem);
1038 return 0;
1039 }
1040 if (!strcmp(uinfo->value.enumerated.name, str)) {
1041 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE;
1042 break;
1043 }
1044 }
1045 }
1046 kfree(uinfo);
1047 }
1048 up_read(&mixer->card->controls_rwsem);
1049 if (slot.present != 0) {
1050 pslot = kmalloc(sizeof(slot), GFP_KERNEL);
1051 if (! pslot)
1052 return -ENOMEM;
1053 *pslot = slot;
1054 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE;
1055 pslot->assigned = ptr;
1056 pslot->allocated = ptr_allocated;
1057 rslot = &mixer->slots[ptr->oss_id];
1058 mixer_slot_clear(rslot);
1059 rslot->stereo = slot.channels > 1 ? 1 : 0;
1060 rslot->get_volume = snd_mixer_oss_get_volume1;
1061 rslot->put_volume = snd_mixer_oss_put_volume1;
1062 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */
1063 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) {
1064 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw;
1065 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw;
1066 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) {
1067 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route;
1068 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route;
1069 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) {
1070 mixer->mask_recsrc |= 1 << ptr->oss_id;
1071 }
1072 rslot->private_data = pslot;
1073 rslot->private_free = snd_mixer_oss_slot_free;
1074 return 1;
1075 }
1076 return 0;
1077 }
1078
1079 #ifdef CONFIG_PROC_FS
1080 /*
1081 */
1082 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name
1083 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = {
1084 MIXER_VOL(VOLUME),
1085 MIXER_VOL(BASS),
1086 MIXER_VOL(TREBLE),
1087 MIXER_VOL(SYNTH),
1088 MIXER_VOL(PCM),
1089 MIXER_VOL(SPEAKER),
1090 MIXER_VOL(LINE),
1091 MIXER_VOL(MIC),
1092 MIXER_VOL(CD),
1093 MIXER_VOL(IMIX),
1094 MIXER_VOL(ALTPCM),
1095 MIXER_VOL(RECLEV),
1096 MIXER_VOL(IGAIN),
1097 MIXER_VOL(OGAIN),
1098 MIXER_VOL(LINE1),
1099 MIXER_VOL(LINE2),
1100 MIXER_VOL(LINE3),
1101 MIXER_VOL(DIGITAL1),
1102 MIXER_VOL(DIGITAL2),
1103 MIXER_VOL(DIGITAL3),
1104 MIXER_VOL(PHONEIN),
1105 MIXER_VOL(PHONEOUT),
1106 MIXER_VOL(VIDEO),
1107 MIXER_VOL(RADIO),
1108 MIXER_VOL(MONITOR),
1109 };
1110
1111 /*
1112 * /proc interface
1113 */
1114
1115 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry,
1116 struct snd_info_buffer *buffer)
1117 {
1118 struct snd_mixer_oss *mixer = entry->private_data;
1119 int i;
1120
1121 mutex_lock(&mixer->reg_mutex);
1122 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) {
1123 struct slot *p;
1124
1125 if (! oss_mixer_names[i])
1126 continue;
1127 p = (struct slot *)mixer->slots[i].private_data;
1128 snd_iprintf(buffer, "%s ", oss_mixer_names[i]);
1129 if (p && p->assigned)
1130 snd_iprintf(buffer, "\"%s\" %d\n",
1131 p->assigned->name,
1132 p->assigned->index);
1133 else
1134 snd_iprintf(buffer, "\"\" 0\n");
1135 }
1136 mutex_unlock(&mixer->reg_mutex);
1137 }
1138
1139 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry,
1140 struct snd_info_buffer *buffer)
1141 {
1142 struct snd_mixer_oss *mixer = entry->private_data;
1143 char line[128], str[32], idxstr[16], *cptr;
1144 int ch, idx;
1145 struct snd_mixer_oss_assign_table *tbl;
1146 struct slot *slot;
1147
1148 while (!snd_info_get_line(buffer, line, sizeof(line))) {
1149 cptr = snd_info_get_str(str, line, sizeof(str));
1150 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++)
1151 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0)
1152 break;
1153 if (ch >= SNDRV_OSS_MAX_MIXERS) {
1154 snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str);
1155 continue;
1156 }
1157 cptr = snd_info_get_str(str, cptr, sizeof(str));
1158 if (! *str) {
1159 /* remove the entry */
1160 mutex_lock(&mixer->reg_mutex);
1161 mixer_slot_clear(&mixer->slots[ch]);
1162 mutex_unlock(&mixer->reg_mutex);
1163 continue;
1164 }
1165 snd_info_get_str(idxstr, cptr, sizeof(idxstr));
1166 idx = simple_strtoul(idxstr, NULL, 10);
1167 if (idx >= 0x4000) { /* too big */
1168 snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx);
1169 continue;
1170 }
1171 mutex_lock(&mixer->reg_mutex);
1172 slot = (struct slot *)mixer->slots[ch].private_data;
1173 if (slot && slot->assigned &&
1174 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str))
1175 /* not changed */
1176 goto __unlock;
1177 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL);
1178 if (! tbl) {
1179 snd_printk(KERN_ERR "mixer_oss: no memory\n");
1180 goto __unlock;
1181 }
1182 tbl->oss_id = ch;
1183 tbl->name = kstrdup(str, GFP_KERNEL);
1184 if (! tbl->name) {
1185 kfree(tbl);
1186 goto __unlock;
1187 }
1188 tbl->index = idx;
1189 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) {
1190 kfree(tbl->name);
1191 kfree(tbl);
1192 }
1193 __unlock:
1194 mutex_unlock(&mixer->reg_mutex);
1195 }
1196 }
1197
1198 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer)
1199 {
1200 struct snd_info_entry *entry;
1201
1202 entry = snd_info_create_card_entry(mixer->card, "oss_mixer",
1203 mixer->card->proc_root);
1204 if (! entry)
1205 return;
1206 entry->content = SNDRV_INFO_CONTENT_TEXT;
1207 entry->mode = S_IFREG | S_IRUGO | S_IWUSR;
1208 entry->c.text.read = snd_mixer_oss_proc_read;
1209 entry->c.text.write = snd_mixer_oss_proc_write;
1210 entry->private_data = mixer;
1211 if (snd_info_register(entry) < 0) {
1212 snd_info_free_entry(entry);
1213 entry = NULL;
1214 }
1215 mixer->proc_entry = entry;
1216 }
1217
1218 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer)
1219 {
1220 snd_info_free_entry(mixer->proc_entry);
1221 mixer->proc_entry = NULL;
1222 }
1223 #else /* !CONFIG_PROC_FS */
1224 #define snd_mixer_oss_proc_init(mix)
1225 #define snd_mixer_oss_proc_done(mix)
1226 #endif /* CONFIG_PROC_FS */
1227
1228 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer)
1229 {
1230 static struct snd_mixer_oss_assign_table table[] = {
1231 { SOUND_MIXER_VOLUME, "Master", 0 },
1232 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */
1233 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 },
1234 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 },
1235 { SOUND_MIXER_SYNTH, "Synth", 0 },
1236 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */
1237 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */
1238 { SOUND_MIXER_PCM, "PCM", 0 },
1239 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 },
1240 { SOUND_MIXER_LINE, "Line", 0 },
1241 { SOUND_MIXER_MIC, "Mic", 0 },
1242 { SOUND_MIXER_CD, "CD", 0 },
1243 { SOUND_MIXER_IMIX, "Monitor Mix", 0 },
1244 { SOUND_MIXER_ALTPCM, "PCM", 1 },
1245 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */
1246 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */
1247 { SOUND_MIXER_RECLEV, "-- nothing --", 0 },
1248 { SOUND_MIXER_IGAIN, "Capture", 0 },
1249 { SOUND_MIXER_OGAIN, "Playback", 0 },
1250 { SOUND_MIXER_LINE1, "Aux", 0 },
1251 { SOUND_MIXER_LINE2, "Aux", 1 },
1252 { SOUND_MIXER_LINE3, "Aux", 2 },
1253 { SOUND_MIXER_DIGITAL1, "Digital", 0 },
1254 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */
1255 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */
1256 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */
1257 { SOUND_MIXER_DIGITAL2, "Digital", 1 },
1258 { SOUND_MIXER_DIGITAL3, "Digital", 2 },
1259 { SOUND_MIXER_PHONEIN, "Phone", 0 },
1260 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 },
1261 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */
1262 { SOUND_MIXER_VIDEO, "Video", 0 },
1263 { SOUND_MIXER_RADIO, "Radio", 0 },
1264 { SOUND_MIXER_MONITOR, "Monitor", 0 }
1265 };
1266 unsigned int idx;
1267
1268 for (idx = 0; idx < ARRAY_SIZE(table); idx++)
1269 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0);
1270 if (mixer->mask_recsrc) {
1271 mixer->get_recsrc = snd_mixer_oss_get_recsrc2;
1272 mixer->put_recsrc = snd_mixer_oss_put_recsrc2;
1273 }
1274 }
1275
1276 /*
1277 *
1278 */
1279
1280 static int snd_mixer_oss_free1(void *private)
1281 {
1282 struct snd_mixer_oss *mixer = private;
1283 struct snd_card *card;
1284 int idx;
1285
1286 snd_assert(mixer != NULL, return -ENXIO);
1287 card = mixer->card;
1288 snd_assert(mixer == card->mixer_oss, return -ENXIO);
1289 card->mixer_oss = NULL;
1290 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) {
1291 struct snd_mixer_oss_slot *chn = &mixer->slots[idx];
1292 if (chn->private_free)
1293 chn->private_free(chn);
1294 }
1295 kfree(mixer);
1296 return 0;
1297 }
1298
1299 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd)
1300 {
1301 struct snd_mixer_oss *mixer;
1302
1303 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) {
1304 char name[128];
1305 int idx, err;
1306
1307 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL);
1308 if (mixer == NULL)
1309 return -ENOMEM;
1310 mutex_init(&mixer->reg_mutex);
1311 sprintf(name, "mixer%i%i", card->number, 0);
1312 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER,
1313 card, 0,
1314 &snd_mixer_oss_f_ops, card,
1315 name)) < 0) {
1316 snd_printk(KERN_ERR "unable to register OSS mixer device %i:%i\n",
1317 card->number, 0);
1318 kfree(mixer);
1319 return err;
1320 }
1321 mixer->oss_dev_alloc = 1;
1322 mixer->card = card;
1323 if (*card->mixername)
1324 strlcpy(mixer->name, card->mixername, sizeof(mixer->name));
1325 else
1326 strlcpy(mixer->name, name, sizeof(mixer->name));
1327 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1328 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS,
1329 card->number,
1330 mixer->name);
1331 #endif
1332 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++)
1333 mixer->slots[idx].number = idx;
1334 card->mixer_oss = mixer;
1335 snd_mixer_oss_build(mixer);
1336 snd_mixer_oss_proc_init(mixer);
1337 } else {
1338 mixer = card->mixer_oss;
1339 if (mixer == NULL)
1340 return 0;
1341 if (mixer->oss_dev_alloc) {
1342 #ifdef SNDRV_OSS_INFO_DEV_MIXERS
1343 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number);
1344 #endif
1345 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0);
1346 mixer->oss_dev_alloc = 0;
1347 }
1348 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT)
1349 return 0;
1350 snd_mixer_oss_proc_done(mixer);
1351 return snd_mixer_oss_free1(mixer);
1352 }
1353 return 0;
1354 }
1355
1356 static int __init alsa_mixer_oss_init(void)
1357 {
1358 int idx;
1359
1360 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler;
1361 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1362 if (snd_cards[idx])
1363 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER);
1364 }
1365 return 0;
1366 }
1367
1368 static void __exit alsa_mixer_oss_exit(void)
1369 {
1370 int idx;
1371
1372 snd_mixer_oss_notify_callback = NULL;
1373 for (idx = 0; idx < SNDRV_CARDS; idx++) {
1374 if (snd_cards[idx])
1375 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE);
1376 }
1377 }
1378
1379 module_init(alsa_mixer_oss_init)
1380 module_exit(alsa_mixer_oss_exit)
1381
1382 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card);
WRT350N Kernel Patches