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