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 <linux/init.h> 23 #include <linux/slab.h> 24 #include <linux/time.h> 25 #include <linux/string.h> 26 #include <linux/module.h> 27 #include <linux/compat.h> 28 #include <sound/core.h> 29 #include <sound/minors.h> 30 #include <sound/control.h> 31 #include <sound/info.h> 32 #include <sound/mixer_oss.h> 33 #include <linux/soundcard.h> 34 35 #define OSS_ALSAEMULVER _SIOR ('M', 249, int) 36 37 MODULE_AUTHOR("Jaroslav Kysela <perex@perex.cz>"); 38 MODULE_DESCRIPTION("Mixer OSS emulation for ALSA."); 39 MODULE_LICENSE("GPL"); 40 MODULE_ALIAS_SNDRV_MINOR(SNDRV_MINOR_OSS_MIXER); 41 42 static int snd_mixer_oss_open(struct inode *inode, struct file *file) 43 { 44 struct snd_card *card; 45 struct snd_mixer_oss_file *fmixer; 46 int err; 47 48 err = nonseekable_open(inode, file); 49 if (err < 0) 50 return err; 51 52 card = snd_lookup_oss_minor_data(iminor(inode), 53 SNDRV_OSS_DEVICE_TYPE_MIXER); 54 if (card == NULL) 55 return -ENODEV; 56 if (card->mixer_oss == NULL) { 57 snd_card_unref(card); 58 return -ENODEV; 59 } 60 err = snd_card_file_add(card, file); 61 if (err < 0) { 62 snd_card_unref(card); 63 return err; 64 } 65 fmixer = kzalloc(sizeof(*fmixer), GFP_KERNEL); 66 if (fmixer == NULL) { 67 snd_card_file_remove(card, file); 68 snd_card_unref(card); 69 return -ENOMEM; 70 } 71 fmixer->card = card; 72 fmixer->mixer = card->mixer_oss; 73 file->private_data = fmixer; 74 if (!try_module_get(card->module)) { 75 kfree(fmixer); 76 snd_card_file_remove(card, file); 77 snd_card_unref(card); 78 return -EFAULT; 79 } 80 snd_card_unref(card); 81 return 0; 82 } 83 84 static int snd_mixer_oss_release(struct inode *inode, struct file *file) 85 { 86 struct snd_mixer_oss_file *fmixer; 87 88 if (file->private_data) { 89 fmixer = file->private_data; 90 module_put(fmixer->card->module); 91 snd_card_file_remove(fmixer->card, file); 92 kfree(fmixer); 93 } 94 return 0; 95 } 96 97 static int snd_mixer_oss_info(struct snd_mixer_oss_file *fmixer, 98 mixer_info __user *_info) 99 { 100 struct snd_card *card = fmixer->card; 101 struct snd_mixer_oss *mixer = fmixer->mixer; 102 struct mixer_info info; 103 104 memset(&info, 0, sizeof(info)); 105 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); 106 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); 107 info.modify_counter = card->mixer_oss_change_count; 108 if (copy_to_user(_info, &info, sizeof(info))) 109 return -EFAULT; 110 return 0; 111 } 112 113 static int snd_mixer_oss_info_obsolete(struct snd_mixer_oss_file *fmixer, 114 _old_mixer_info __user *_info) 115 { 116 struct snd_card *card = fmixer->card; 117 struct snd_mixer_oss *mixer = fmixer->mixer; 118 _old_mixer_info info; 119 120 memset(&info, 0, sizeof(info)); 121 strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); 122 strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); 123 if (copy_to_user(_info, &info, sizeof(info))) 124 return -EFAULT; 125 return 0; 126 } 127 128 static int snd_mixer_oss_caps(struct snd_mixer_oss_file *fmixer) 129 { 130 struct snd_mixer_oss *mixer = fmixer->mixer; 131 int result = 0; 132 133 if (mixer == NULL) 134 return -EIO; 135 if (mixer->get_recsrc && mixer->put_recsrc) 136 result |= SOUND_CAP_EXCL_INPUT; 137 return result; 138 } 139 140 static int snd_mixer_oss_devmask(struct snd_mixer_oss_file *fmixer) 141 { 142 struct snd_mixer_oss *mixer = fmixer->mixer; 143 struct snd_mixer_oss_slot *pslot; 144 int result = 0, chn; 145 146 if (mixer == NULL) 147 return -EIO; 148 for (chn = 0; chn < 31; chn++) { 149 pslot = &mixer->slots[chn]; 150 if (pslot->put_volume || pslot->put_recsrc) 151 result |= 1 << chn; 152 } 153 return result; 154 } 155 156 static int snd_mixer_oss_stereodevs(struct snd_mixer_oss_file *fmixer) 157 { 158 struct snd_mixer_oss *mixer = fmixer->mixer; 159 struct snd_mixer_oss_slot *pslot; 160 int result = 0, chn; 161 162 if (mixer == NULL) 163 return -EIO; 164 for (chn = 0; chn < 31; chn++) { 165 pslot = &mixer->slots[chn]; 166 if (pslot->put_volume && pslot->stereo) 167 result |= 1 << chn; 168 } 169 return result; 170 } 171 172 static int snd_mixer_oss_recmask(struct snd_mixer_oss_file *fmixer) 173 { 174 struct snd_mixer_oss *mixer = fmixer->mixer; 175 int result = 0; 176 177 if (mixer == NULL) 178 return -EIO; 179 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 180 result = mixer->mask_recsrc; 181 } else { 182 struct snd_mixer_oss_slot *pslot; 183 int chn; 184 for (chn = 0; chn < 31; chn++) { 185 pslot = &mixer->slots[chn]; 186 if (pslot->put_recsrc) 187 result |= 1 << chn; 188 } 189 } 190 return result; 191 } 192 193 static int snd_mixer_oss_get_recsrc(struct snd_mixer_oss_file *fmixer) 194 { 195 struct snd_mixer_oss *mixer = fmixer->mixer; 196 int result = 0; 197 198 if (mixer == NULL) 199 return -EIO; 200 if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ 201 int err; 202 unsigned int index; 203 if ((err = mixer->get_recsrc(fmixer, &index)) < 0) 204 return err; 205 result = 1 << index; 206 } else { 207 struct snd_mixer_oss_slot *pslot; 208 int chn; 209 for (chn = 0; chn < 31; chn++) { 210 pslot = &mixer->slots[chn]; 211 if (pslot->get_recsrc) { 212 int active = 0; 213 pslot->get_recsrc(fmixer, pslot, &active); 214 if (active) 215 result |= 1 << chn; 216 } 217 } 218 } 219 return mixer->oss_recsrc = result; 220 } 221 222 static int snd_mixer_oss_set_recsrc(struct snd_mixer_oss_file *fmixer, int recsrc) 223 { 224 struct snd_mixer_oss *mixer = fmixer->mixer; 225 struct snd_mixer_oss_slot *pslot; 226 int chn, active; 227 unsigned int index; 228 int result = 0; 229 230 if (mixer == NULL) 231 return -EIO; 232 if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */ 233 if (recsrc & ~mixer->oss_recsrc) 234 recsrc &= ~mixer->oss_recsrc; 235 mixer->put_recsrc(fmixer, ffz(~recsrc)); 236 mixer->get_recsrc(fmixer, &index); 237 result = 1 << index; 238 } 239 for (chn = 0; chn < 31; chn++) { 240 pslot = &mixer->slots[chn]; 241 if (pslot->put_recsrc) { 242 active = (recsrc & (1 << chn)) ? 1 : 0; 243 pslot->put_recsrc(fmixer, pslot, active); 244 } 245 } 246 if (! result) { 247 for (chn = 0; chn < 31; chn++) { 248 pslot = &mixer->slots[chn]; 249 if (pslot->get_recsrc) { 250 active = 0; 251 pslot->get_recsrc(fmixer, pslot, &active); 252 if (active) 253 result |= 1 << chn; 254 } 255 } 256 } 257 return result; 258 } 259 260 static int snd_mixer_oss_get_volume(struct snd_mixer_oss_file *fmixer, int slot) 261 { 262 struct snd_mixer_oss *mixer = fmixer->mixer; 263 struct snd_mixer_oss_slot *pslot; 264 int result = 0, left, right; 265 266 if (mixer == NULL || slot > 30) 267 return -EIO; 268 pslot = &mixer->slots[slot]; 269 left = pslot->volume[0]; 270 right = pslot->volume[1]; 271 if (pslot->get_volume) 272 result = pslot->get_volume(fmixer, pslot, &left, &right); 273 if (!pslot->stereo) 274 right = left; 275 if (snd_BUG_ON(left < 0 || left > 100)) 276 return -EIO; 277 if (snd_BUG_ON(right < 0 || right > 100)) 278 return -EIO; 279 if (result >= 0) { 280 pslot->volume[0] = left; 281 pslot->volume[1] = right; 282 result = (left & 0xff) | ((right & 0xff) << 8); 283 } 284 return result; 285 } 286 287 static int snd_mixer_oss_set_volume(struct snd_mixer_oss_file *fmixer, 288 int slot, int volume) 289 { 290 struct snd_mixer_oss *mixer = fmixer->mixer; 291 struct snd_mixer_oss_slot *pslot; 292 int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; 293 294 if (mixer == NULL || slot > 30) 295 return -EIO; 296 pslot = &mixer->slots[slot]; 297 if (left > 100) 298 left = 100; 299 if (right > 100) 300 right = 100; 301 if (!pslot->stereo) 302 right = left; 303 if (pslot->put_volume) 304 result = pslot->put_volume(fmixer, pslot, left, right); 305 if (result < 0) 306 return result; 307 pslot->volume[0] = left; 308 pslot->volume[1] = right; 309 return (left & 0xff) | ((right & 0xff) << 8); 310 } 311 312 static int snd_mixer_oss_ioctl1(struct snd_mixer_oss_file *fmixer, unsigned int cmd, unsigned long arg) 313 { 314 void __user *argp = (void __user *)arg; 315 int __user *p = argp; 316 int tmp; 317 318 if (snd_BUG_ON(!fmixer)) 319 return -ENXIO; 320 if (((cmd >> 8) & 0xff) == 'M') { 321 switch (cmd) { 322 case SOUND_MIXER_INFO: 323 return snd_mixer_oss_info(fmixer, argp); 324 case SOUND_OLD_MIXER_INFO: 325 return snd_mixer_oss_info_obsolete(fmixer, argp); 326 case SOUND_MIXER_WRITE_RECSRC: 327 if (get_user(tmp, p)) 328 return -EFAULT; 329 tmp = snd_mixer_oss_set_recsrc(fmixer, tmp); 330 if (tmp < 0) 331 return tmp; 332 return put_user(tmp, p); 333 case OSS_GETVERSION: 334 return put_user(SNDRV_OSS_VERSION, p); 335 case OSS_ALSAEMULVER: 336 return put_user(1, p); 337 case SOUND_MIXER_READ_DEVMASK: 338 tmp = snd_mixer_oss_devmask(fmixer); 339 if (tmp < 0) 340 return tmp; 341 return put_user(tmp, p); 342 case SOUND_MIXER_READ_STEREODEVS: 343 tmp = snd_mixer_oss_stereodevs(fmixer); 344 if (tmp < 0) 345 return tmp; 346 return put_user(tmp, p); 347 case SOUND_MIXER_READ_RECMASK: 348 tmp = snd_mixer_oss_recmask(fmixer); 349 if (tmp < 0) 350 return tmp; 351 return put_user(tmp, p); 352 case SOUND_MIXER_READ_CAPS: 353 tmp = snd_mixer_oss_caps(fmixer); 354 if (tmp < 0) 355 return tmp; 356 return put_user(tmp, p); 357 case SOUND_MIXER_READ_RECSRC: 358 tmp = snd_mixer_oss_get_recsrc(fmixer); 359 if (tmp < 0) 360 return tmp; 361 return put_user(tmp, p); 362 } 363 } 364 if (cmd & SIOC_IN) { 365 if (get_user(tmp, p)) 366 return -EFAULT; 367 tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp); 368 if (tmp < 0) 369 return tmp; 370 return put_user(tmp, p); 371 } else if (cmd & SIOC_OUT) { 372 tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff); 373 if (tmp < 0) 374 return tmp; 375 return put_user(tmp, p); 376 } 377 return -ENXIO; 378 } 379 380 static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 381 { 382 return snd_mixer_oss_ioctl1(file->private_data, cmd, arg); 383 } 384 385 int snd_mixer_oss_ioctl_card(struct snd_card *card, unsigned int cmd, unsigned long arg) 386 { 387 struct snd_mixer_oss_file fmixer; 388 389 if (snd_BUG_ON(!card)) 390 return -ENXIO; 391 if (card->mixer_oss == NULL) 392 return -ENXIO; 393 memset(&fmixer, 0, sizeof(fmixer)); 394 fmixer.card = card; 395 fmixer.mixer = card->mixer_oss; 396 return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); 397 } 398 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); 399 400 #ifdef CONFIG_COMPAT 401 /* all compatible */ 402 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd, 403 unsigned long arg) 404 { 405 return snd_mixer_oss_ioctl1(file->private_data, cmd, 406 (unsigned long)compat_ptr(arg)); 407 } 408 #else 409 #define snd_mixer_oss_ioctl_compat NULL 410 #endif 411 412 /* 413 * REGISTRATION PART 414 */ 415 416 static const struct file_operations snd_mixer_oss_f_ops = 417 { 418 .owner = THIS_MODULE, 419 .open = snd_mixer_oss_open, 420 .release = snd_mixer_oss_release, 421 .llseek = no_llseek, 422 .unlocked_ioctl = snd_mixer_oss_ioctl, 423 .compat_ioctl = snd_mixer_oss_ioctl_compat, 424 }; 425 426 /* 427 * utilities 428 */ 429 430 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) 431 { 432 long orange = omax - omin, nrange = nmax - nmin; 433 434 if (orange == 0) 435 return 0; 436 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin; 437 } 438 439 /* convert from alsa native to oss values (0-100) */ 440 static long snd_mixer_oss_conv1(long val, long min, long max, int *old) 441 { 442 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) 443 return *old; 444 return snd_mixer_oss_conv(val, min, max, 0, 100); 445 } 446 447 /* convert from oss to alsa native values */ 448 static long snd_mixer_oss_conv2(long val, long min, long max) 449 { 450 return snd_mixer_oss_conv(val, 0, 100, min, max); 451 } 452 453 #if 0 454 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot) 455 { 456 struct snd_mixer_oss *mixer = card->mixer_oss; 457 if (mixer) 458 mixer->mask_recsrc |= 1 << slot; 459 } 460 461 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot) 462 { 463 struct snd_mixer_oss *mixer = card->mixer_oss; 464 if (mixer && (mixer->mask_recsrc & (1 << slot))) 465 return 1; 466 return 0; 467 } 468 #endif 469 470 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 471 472 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 473 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 474 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2 475 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 476 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 477 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5 478 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 479 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 480 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8 481 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 482 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 483 484 #define SNDRV_MIXER_OSS_ITEM_COUNT 11 485 486 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) 487 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) 488 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) 489 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) 490 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) 491 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) 492 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) 493 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) 494 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) 495 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) 496 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) 497 498 struct slot { 499 unsigned int signature; 500 unsigned int present; 501 unsigned int channels; 502 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; 503 unsigned int capture_item; 504 struct snd_mixer_oss_assign_table *assigned; 505 unsigned int allocated: 1; 506 }; 507 508 #define ID_UNKNOWN ((unsigned int)-1) 509 510 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index) 511 { 512 struct snd_card *card = mixer->card; 513 struct snd_ctl_elem_id id; 514 515 memset(&id, 0, sizeof(id)); 516 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 517 strlcpy(id.name, name, sizeof(id.name)); 518 id.index = index; 519 return snd_ctl_find_id(card, &id); 520 } 521 522 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer, 523 struct snd_mixer_oss_slot *pslot, 524 unsigned int numid, 525 int *left, int *right) 526 { 527 struct snd_ctl_elem_info *uinfo; 528 struct snd_ctl_elem_value *uctl; 529 struct snd_kcontrol *kctl; 530 struct snd_card *card = fmixer->card; 531 532 if (numid == ID_UNKNOWN) 533 return; 534 down_read(&card->controls_rwsem); 535 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 536 up_read(&card->controls_rwsem); 537 return; 538 } 539 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 540 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 541 if (uinfo == NULL || uctl == NULL) 542 goto __unalloc; 543 if (kctl->info(kctl, uinfo)) 544 goto __unalloc; 545 if (kctl->get(kctl, uctl)) 546 goto __unalloc; 547 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 548 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 549 goto __unalloc; 550 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); 551 if (uinfo->count > 1) 552 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); 553 __unalloc: 554 up_read(&card->controls_rwsem); 555 kfree(uctl); 556 kfree(uinfo); 557 } 558 559 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer, 560 struct snd_mixer_oss_slot *pslot, 561 unsigned int numid, 562 int *left, int *right, 563 int route) 564 { 565 struct snd_ctl_elem_info *uinfo; 566 struct snd_ctl_elem_value *uctl; 567 struct snd_kcontrol *kctl; 568 struct snd_card *card = fmixer->card; 569 570 if (numid == ID_UNKNOWN) 571 return; 572 down_read(&card->controls_rwsem); 573 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 574 up_read(&card->controls_rwsem); 575 return; 576 } 577 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 578 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 579 if (uinfo == NULL || uctl == NULL) 580 goto __unalloc; 581 if (kctl->info(kctl, uinfo)) 582 goto __unalloc; 583 if (kctl->get(kctl, uctl)) 584 goto __unalloc; 585 if (!uctl->value.integer.value[0]) { 586 *left = 0; 587 if (uinfo->count == 1) 588 *right = 0; 589 } 590 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) 591 *right = 0; 592 __unalloc: 593 up_read(&card->controls_rwsem); 594 kfree(uctl); 595 kfree(uinfo); 596 } 597 598 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, 599 struct snd_mixer_oss_slot *pslot, 600 int *left, int *right) 601 { 602 struct slot *slot = pslot->private_data; 603 604 *left = *right = 100; 605 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 606 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 607 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 608 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 609 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 610 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 611 } 612 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 613 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 614 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 615 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 616 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 617 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 618 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 619 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 620 } 621 return 0; 622 } 623 624 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, 625 struct snd_mixer_oss_slot *pslot, 626 unsigned int numid, 627 int left, int right) 628 { 629 struct snd_ctl_elem_info *uinfo; 630 struct snd_ctl_elem_value *uctl; 631 struct snd_kcontrol *kctl; 632 struct snd_card *card = fmixer->card; 633 int res; 634 635 if (numid == ID_UNKNOWN) 636 return; 637 down_read(&card->controls_rwsem); 638 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 639 up_read(&card->controls_rwsem); 640 return; 641 } 642 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 643 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 644 if (uinfo == NULL || uctl == NULL) 645 goto __unalloc; 646 if (kctl->info(kctl, uinfo)) 647 goto __unalloc; 648 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 649 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 650 goto __unalloc; 651 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); 652 if (uinfo->count > 1) 653 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); 654 if ((res = kctl->put(kctl, uctl)) < 0) 655 goto __unalloc; 656 if (res > 0) 657 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 658 __unalloc: 659 up_read(&card->controls_rwsem); 660 kfree(uctl); 661 kfree(uinfo); 662 } 663 664 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, 665 struct snd_mixer_oss_slot *pslot, 666 unsigned int numid, 667 int left, int right, 668 int route) 669 { 670 struct snd_ctl_elem_info *uinfo; 671 struct snd_ctl_elem_value *uctl; 672 struct snd_kcontrol *kctl; 673 struct snd_card *card = fmixer->card; 674 int res; 675 676 if (numid == ID_UNKNOWN) 677 return; 678 down_read(&card->controls_rwsem); 679 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 680 up_read(&card->controls_rwsem); 681 return; 682 } 683 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 684 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 685 if (uinfo == NULL || uctl == NULL) 686 goto __unalloc; 687 if (kctl->info(kctl, uinfo)) 688 goto __unalloc; 689 if (uinfo->count > 1) { 690 uctl->value.integer.value[0] = left > 0 ? 1 : 0; 691 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; 692 if (route) { 693 uctl->value.integer.value[1] = 694 uctl->value.integer.value[2] = 0; 695 } 696 } else { 697 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; 698 } 699 if ((res = kctl->put(kctl, uctl)) < 0) 700 goto __unalloc; 701 if (res > 0) 702 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 703 __unalloc: 704 up_read(&card->controls_rwsem); 705 kfree(uctl); 706 kfree(uinfo); 707 } 708 709 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, 710 struct snd_mixer_oss_slot *pslot, 711 int left, int right) 712 { 713 struct slot *slot = pslot->private_data; 714 715 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 716 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 717 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) 718 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 719 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { 720 snd_mixer_oss_put_volume1_vol(fmixer, pslot, 721 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 722 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 723 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 724 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 725 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 726 } 727 if (left || right) { 728 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) 729 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 730 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) 731 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 732 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) 733 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 734 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) 735 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 736 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) 737 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 738 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) 739 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 740 } else { 741 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 742 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 743 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 744 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 745 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 746 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 747 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 748 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 749 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 750 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 751 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 752 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 753 } 754 } 755 return 0; 756 } 757 758 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 759 struct snd_mixer_oss_slot *pslot, 760 int *active) 761 { 762 struct slot *slot = pslot->private_data; 763 int left, right; 764 765 left = right = 1; 766 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); 767 *active = (left || right) ? 1 : 0; 768 return 0; 769 } 770 771 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, 772 struct snd_mixer_oss_slot *pslot, 773 int *active) 774 { 775 struct slot *slot = pslot->private_data; 776 int left, right; 777 778 left = right = 1; 779 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); 780 *active = (left || right) ? 1 : 0; 781 return 0; 782 } 783 784 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 785 struct snd_mixer_oss_slot *pslot, 786 int active) 787 { 788 struct slot *slot = pslot->private_data; 789 790 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); 791 return 0; 792 } 793 794 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, 795 struct snd_mixer_oss_slot *pslot, 796 int active) 797 { 798 struct slot *slot = pslot->private_data; 799 800 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); 801 return 0; 802 } 803 804 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index) 805 { 806 struct snd_card *card = fmixer->card; 807 struct snd_mixer_oss *mixer = fmixer->mixer; 808 struct snd_kcontrol *kctl; 809 struct snd_mixer_oss_slot *pslot; 810 struct slot *slot; 811 struct snd_ctl_elem_info *uinfo; 812 struct snd_ctl_elem_value *uctl; 813 int err, idx; 814 815 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 816 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 817 if (uinfo == NULL || uctl == NULL) { 818 err = -ENOMEM; 819 goto __free_only; 820 } 821 down_read(&card->controls_rwsem); 822 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 823 if (! kctl) { 824 err = -ENOENT; 825 goto __unlock; 826 } 827 if ((err = kctl->info(kctl, uinfo)) < 0) 828 goto __unlock; 829 if ((err = kctl->get(kctl, uctl)) < 0) 830 goto __unlock; 831 for (idx = 0; idx < 32; idx++) { 832 if (!(mixer->mask_recsrc & (1 << idx))) 833 continue; 834 pslot = &mixer->slots[idx]; 835 slot = pslot->private_data; 836 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 837 continue; 838 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 839 continue; 840 if (slot->capture_item == uctl->value.enumerated.item[0]) { 841 *active_index = idx; 842 break; 843 } 844 } 845 err = 0; 846 __unlock: 847 up_read(&card->controls_rwsem); 848 __free_only: 849 kfree(uctl); 850 kfree(uinfo); 851 return err; 852 } 853 854 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index) 855 { 856 struct snd_card *card = fmixer->card; 857 struct snd_mixer_oss *mixer = fmixer->mixer; 858 struct snd_kcontrol *kctl; 859 struct snd_mixer_oss_slot *pslot; 860 struct slot *slot = NULL; 861 struct snd_ctl_elem_info *uinfo; 862 struct snd_ctl_elem_value *uctl; 863 int err; 864 unsigned int idx; 865 866 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 867 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 868 if (uinfo == NULL || uctl == NULL) { 869 err = -ENOMEM; 870 goto __free_only; 871 } 872 down_read(&card->controls_rwsem); 873 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 874 if (! kctl) { 875 err = -ENOENT; 876 goto __unlock; 877 } 878 if ((err = kctl->info(kctl, uinfo)) < 0) 879 goto __unlock; 880 for (idx = 0; idx < 32; idx++) { 881 if (!(mixer->mask_recsrc & (1 << idx))) 882 continue; 883 pslot = &mixer->slots[idx]; 884 slot = pslot->private_data; 885 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 886 continue; 887 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 888 continue; 889 if (idx == active_index) 890 break; 891 slot = NULL; 892 } 893 if (! slot) 894 goto __unlock; 895 for (idx = 0; idx < uinfo->count; idx++) 896 uctl->value.enumerated.item[idx] = slot->capture_item; 897 err = kctl->put(kctl, uctl); 898 if (err > 0) 899 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 900 err = 0; 901 __unlock: 902 up_read(&card->controls_rwsem); 903 __free_only: 904 kfree(uctl); 905 kfree(uinfo); 906 return err; 907 } 908 909 struct snd_mixer_oss_assign_table { 910 int oss_id; 911 const char *name; 912 int index; 913 }; 914 915 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item) 916 { 917 struct snd_ctl_elem_info *info; 918 struct snd_kcontrol *kcontrol; 919 struct snd_card *card = mixer->card; 920 int err; 921 922 down_read(&card->controls_rwsem); 923 kcontrol = snd_mixer_oss_test_id(mixer, name, index); 924 if (kcontrol == NULL) { 925 up_read(&card->controls_rwsem); 926 return 0; 927 } 928 info = kmalloc(sizeof(*info), GFP_KERNEL); 929 if (! info) { 930 up_read(&card->controls_rwsem); 931 return -ENOMEM; 932 } 933 if ((err = kcontrol->info(kcontrol, info)) < 0) { 934 up_read(&card->controls_rwsem); 935 kfree(info); 936 return err; 937 } 938 slot->numid[item] = kcontrol->id.numid; 939 up_read(&card->controls_rwsem); 940 if (info->count > slot->channels) 941 slot->channels = info->count; 942 slot->present |= 1 << item; 943 kfree(info); 944 return 0; 945 } 946 947 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) 948 { 949 struct slot *p = chn->private_data; 950 if (p) { 951 if (p->allocated && p->assigned) { 952 kfree(p->assigned->name); 953 kfree(p->assigned); 954 } 955 kfree(p); 956 } 957 } 958 959 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot) 960 { 961 int idx = rslot->number; /* remember this */ 962 if (rslot->private_free) 963 rslot->private_free(rslot); 964 memset(rslot, 0, sizeof(*rslot)); 965 rslot->number = idx; 966 } 967 968 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in 969 snd_mixer_oss_build_input! */ 970 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, 971 struct snd_mixer_oss_assign_table *ptr, 972 struct slot *slot) 973 { 974 char str[64]; 975 int err; 976 977 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index, 978 SNDRV_MIXER_OSS_ITEM_GLOBAL); 979 if (err) 980 return err; 981 sprintf(str, "%s Switch", ptr->name); 982 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 983 SNDRV_MIXER_OSS_ITEM_GSWITCH); 984 if (err) 985 return err; 986 sprintf(str, "%s Route", ptr->name); 987 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 988 SNDRV_MIXER_OSS_ITEM_GROUTE); 989 if (err) 990 return err; 991 sprintf(str, "%s Volume", ptr->name); 992 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 993 SNDRV_MIXER_OSS_ITEM_GVOLUME); 994 if (err) 995 return err; 996 sprintf(str, "%s Playback Switch", ptr->name); 997 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 998 SNDRV_MIXER_OSS_ITEM_PSWITCH); 999 if (err) 1000 return err; 1001 sprintf(str, "%s Playback Route", ptr->name); 1002 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1003 SNDRV_MIXER_OSS_ITEM_PROUTE); 1004 if (err) 1005 return err; 1006 sprintf(str, "%s Playback Volume", ptr->name); 1007 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1008 SNDRV_MIXER_OSS_ITEM_PVOLUME); 1009 if (err) 1010 return err; 1011 sprintf(str, "%s Capture Switch", ptr->name); 1012 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1013 SNDRV_MIXER_OSS_ITEM_CSWITCH); 1014 if (err) 1015 return err; 1016 sprintf(str, "%s Capture Route", ptr->name); 1017 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1018 SNDRV_MIXER_OSS_ITEM_CROUTE); 1019 if (err) 1020 return err; 1021 sprintf(str, "%s Capture Volume", ptr->name); 1022 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1023 SNDRV_MIXER_OSS_ITEM_CVOLUME); 1024 if (err) 1025 return err; 1026 1027 return 0; 1028 } 1029 1030 /* 1031 * build an OSS mixer element. 1032 * ptr_allocated means the entry is dynamically allocated (change via proc file). 1033 * when replace_old = 1, the old entry is replaced with the new one. 1034 */ 1035 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) 1036 { 1037 struct slot slot; 1038 struct slot *pslot; 1039 struct snd_kcontrol *kctl; 1040 struct snd_mixer_oss_slot *rslot; 1041 char str[64]; 1042 1043 /* check if already assigned */ 1044 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) 1045 return 0; 1046 1047 memset(&slot, 0, sizeof(slot)); 1048 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ 1049 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot)) 1050 return 0; 1051 down_read(&mixer->card->controls_rwsem); 1052 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) { 1053 struct snd_ctl_elem_info *uinfo; 1054 1055 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 1056 if (! uinfo) { 1057 up_read(&mixer->card->controls_rwsem); 1058 return -ENOMEM; 1059 } 1060 1061 if (kctl->info(kctl, uinfo)) { 1062 up_read(&mixer->card->controls_rwsem); 1063 kfree(uinfo); 1064 return 0; 1065 } 1066 strcpy(str, ptr->name); 1067 if (!strcmp(str, "Master")) 1068 strcpy(str, "Mix"); 1069 if (!strcmp(str, "Master Mono")) 1070 strcpy(str, "Mix Mono"); 1071 slot.capture_item = 0; 1072 if (!strcmp(uinfo->value.enumerated.name, str)) { 1073 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1074 } else { 1075 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { 1076 uinfo->value.enumerated.item = slot.capture_item; 1077 if (kctl->info(kctl, uinfo)) { 1078 up_read(&mixer->card->controls_rwsem); 1079 kfree(uinfo); 1080 return 0; 1081 } 1082 if (!strcmp(uinfo->value.enumerated.name, str)) { 1083 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1084 break; 1085 } 1086 } 1087 } 1088 kfree(uinfo); 1089 } 1090 up_read(&mixer->card->controls_rwsem); 1091 if (slot.present != 0) { 1092 pslot = kmalloc(sizeof(slot), GFP_KERNEL); 1093 if (! pslot) 1094 return -ENOMEM; 1095 *pslot = slot; 1096 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; 1097 pslot->assigned = ptr; 1098 pslot->allocated = ptr_allocated; 1099 rslot = &mixer->slots[ptr->oss_id]; 1100 mixer_slot_clear(rslot); 1101 rslot->stereo = slot.channels > 1 ? 1 : 0; 1102 rslot->get_volume = snd_mixer_oss_get_volume1; 1103 rslot->put_volume = snd_mixer_oss_put_volume1; 1104 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ 1105 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 1106 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; 1107 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; 1108 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 1109 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; 1110 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; 1111 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { 1112 mixer->mask_recsrc |= 1 << ptr->oss_id; 1113 } 1114 rslot->private_data = pslot; 1115 rslot->private_free = snd_mixer_oss_slot_free; 1116 return 1; 1117 } 1118 return 0; 1119 } 1120 1121 #ifdef CONFIG_SND_PROC_FS 1122 /* 1123 */ 1124 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name 1125 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { 1126 MIXER_VOL(VOLUME), 1127 MIXER_VOL(BASS), 1128 MIXER_VOL(TREBLE), 1129 MIXER_VOL(SYNTH), 1130 MIXER_VOL(PCM), 1131 MIXER_VOL(SPEAKER), 1132 MIXER_VOL(LINE), 1133 MIXER_VOL(MIC), 1134 MIXER_VOL(CD), 1135 MIXER_VOL(IMIX), 1136 MIXER_VOL(ALTPCM), 1137 MIXER_VOL(RECLEV), 1138 MIXER_VOL(IGAIN), 1139 MIXER_VOL(OGAIN), 1140 MIXER_VOL(LINE1), 1141 MIXER_VOL(LINE2), 1142 MIXER_VOL(LINE3), 1143 MIXER_VOL(DIGITAL1), 1144 MIXER_VOL(DIGITAL2), 1145 MIXER_VOL(DIGITAL3), 1146 MIXER_VOL(PHONEIN), 1147 MIXER_VOL(PHONEOUT), 1148 MIXER_VOL(VIDEO), 1149 MIXER_VOL(RADIO), 1150 MIXER_VOL(MONITOR), 1151 }; 1152 1153 /* 1154 * /proc interface 1155 */ 1156 1157 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry, 1158 struct snd_info_buffer *buffer) 1159 { 1160 struct snd_mixer_oss *mixer = entry->private_data; 1161 int i; 1162 1163 mutex_lock(&mixer->reg_mutex); 1164 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { 1165 struct slot *p; 1166 1167 if (! oss_mixer_names[i]) 1168 continue; 1169 p = (struct slot *)mixer->slots[i].private_data; 1170 snd_iprintf(buffer, "%s ", oss_mixer_names[i]); 1171 if (p && p->assigned) 1172 snd_iprintf(buffer, "\"%s\" %d\n", 1173 p->assigned->name, 1174 p->assigned->index); 1175 else 1176 snd_iprintf(buffer, "\"\" 0\n"); 1177 } 1178 mutex_unlock(&mixer->reg_mutex); 1179 } 1180 1181 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, 1182 struct snd_info_buffer *buffer) 1183 { 1184 struct snd_mixer_oss *mixer = entry->private_data; 1185 char line[128], str[32], idxstr[16]; 1186 const char *cptr; 1187 unsigned int idx; 1188 int ch; 1189 struct snd_mixer_oss_assign_table *tbl; 1190 struct slot *slot; 1191 1192 while (!snd_info_get_line(buffer, line, sizeof(line))) { 1193 cptr = snd_info_get_str(str, line, sizeof(str)); 1194 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) 1195 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) 1196 break; 1197 if (ch >= SNDRV_OSS_MAX_MIXERS) { 1198 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n", 1199 str); 1200 continue; 1201 } 1202 cptr = snd_info_get_str(str, cptr, sizeof(str)); 1203 if (! *str) { 1204 /* remove the entry */ 1205 mutex_lock(&mixer->reg_mutex); 1206 mixer_slot_clear(&mixer->slots[ch]); 1207 mutex_unlock(&mixer->reg_mutex); 1208 continue; 1209 } 1210 snd_info_get_str(idxstr, cptr, sizeof(idxstr)); 1211 idx = simple_strtoul(idxstr, NULL, 10); 1212 if (idx >= 0x4000) { /* too big */ 1213 pr_err("ALSA: mixer_oss: invalid index %d\n", idx); 1214 continue; 1215 } 1216 mutex_lock(&mixer->reg_mutex); 1217 slot = (struct slot *)mixer->slots[ch].private_data; 1218 if (slot && slot->assigned && 1219 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) 1220 /* not changed */ 1221 goto __unlock; 1222 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); 1223 if (!tbl) 1224 goto __unlock; 1225 tbl->oss_id = ch; 1226 tbl->name = kstrdup(str, GFP_KERNEL); 1227 if (! tbl->name) { 1228 kfree(tbl); 1229 goto __unlock; 1230 } 1231 tbl->index = idx; 1232 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { 1233 kfree(tbl->name); 1234 kfree(tbl); 1235 } 1236 __unlock: 1237 mutex_unlock(&mixer->reg_mutex); 1238 } 1239 } 1240 1241 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer) 1242 { 1243 struct snd_info_entry *entry; 1244 1245 entry = snd_info_create_card_entry(mixer->card, "oss_mixer", 1246 mixer->card->proc_root); 1247 if (! entry) 1248 return; 1249 entry->content = SNDRV_INFO_CONTENT_TEXT; 1250 entry->mode = S_IFREG | S_IRUGO | S_IWUSR; 1251 entry->c.text.read = snd_mixer_oss_proc_read; 1252 entry->c.text.write = snd_mixer_oss_proc_write; 1253 entry->private_data = mixer; 1254 if (snd_info_register(entry) < 0) { 1255 snd_info_free_entry(entry); 1256 entry = NULL; 1257 } 1258 mixer->proc_entry = entry; 1259 } 1260 1261 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer) 1262 { 1263 snd_info_free_entry(mixer->proc_entry); 1264 mixer->proc_entry = NULL; 1265 } 1266 #else /* !CONFIG_SND_PROC_FS */ 1267 #define snd_mixer_oss_proc_init(mix) 1268 #define snd_mixer_oss_proc_done(mix) 1269 #endif /* CONFIG_SND_PROC_FS */ 1270 1271 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer) 1272 { 1273 static struct snd_mixer_oss_assign_table table[] = { 1274 { SOUND_MIXER_VOLUME, "Master", 0 }, 1275 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ 1276 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, 1277 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, 1278 { SOUND_MIXER_SYNTH, "Synth", 0 }, 1279 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ 1280 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ 1281 { SOUND_MIXER_PCM, "PCM", 0 }, 1282 { SOUND_MIXER_SPEAKER, "Beep", 0 }, 1283 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */ 1284 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */ 1285 { SOUND_MIXER_LINE, "Line", 0 }, 1286 { SOUND_MIXER_MIC, "Mic", 0 }, 1287 { SOUND_MIXER_CD, "CD", 0 }, 1288 { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, 1289 { SOUND_MIXER_ALTPCM, "PCM", 1 }, 1290 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ 1291 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ 1292 { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, 1293 { SOUND_MIXER_IGAIN, "Capture", 0 }, 1294 { SOUND_MIXER_OGAIN, "Playback", 0 }, 1295 { SOUND_MIXER_LINE1, "Aux", 0 }, 1296 { SOUND_MIXER_LINE2, "Aux", 1 }, 1297 { SOUND_MIXER_LINE3, "Aux", 2 }, 1298 { SOUND_MIXER_DIGITAL1, "Digital", 0 }, 1299 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ 1300 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ 1301 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ 1302 { SOUND_MIXER_DIGITAL2, "Digital", 1 }, 1303 { SOUND_MIXER_DIGITAL3, "Digital", 2 }, 1304 { SOUND_MIXER_PHONEIN, "Phone", 0 }, 1305 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, 1306 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/ 1307 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/ 1308 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ 1309 { SOUND_MIXER_VIDEO, "Video", 0 }, 1310 { SOUND_MIXER_RADIO, "Radio", 0 }, 1311 { SOUND_MIXER_MONITOR, "Monitor", 0 } 1312 }; 1313 unsigned int idx; 1314 1315 for (idx = 0; idx < ARRAY_SIZE(table); idx++) 1316 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); 1317 if (mixer->mask_recsrc) { 1318 mixer->get_recsrc = snd_mixer_oss_get_recsrc2; 1319 mixer->put_recsrc = snd_mixer_oss_put_recsrc2; 1320 } 1321 } 1322 1323 /* 1324 * 1325 */ 1326 1327 static int snd_mixer_oss_free1(void *private) 1328 { 1329 struct snd_mixer_oss *mixer = private; 1330 struct snd_card *card; 1331 int idx; 1332 1333 if (!mixer) 1334 return 0; 1335 card = mixer->card; 1336 if (snd_BUG_ON(mixer != card->mixer_oss)) 1337 return -ENXIO; 1338 card->mixer_oss = NULL; 1339 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { 1340 struct snd_mixer_oss_slot *chn = &mixer->slots[idx]; 1341 if (chn->private_free) 1342 chn->private_free(chn); 1343 } 1344 kfree(mixer); 1345 return 0; 1346 } 1347 1348 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) 1349 { 1350 struct snd_mixer_oss *mixer; 1351 1352 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { 1353 int idx, err; 1354 1355 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); 1356 if (mixer == NULL) 1357 return -ENOMEM; 1358 mutex_init(&mixer->reg_mutex); 1359 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, 1360 card, 0, 1361 &snd_mixer_oss_f_ops, card)) < 0) { 1362 dev_err(card->dev, 1363 "unable to register OSS mixer device %i:%i\n", 1364 card->number, 0); 1365 kfree(mixer); 1366 return err; 1367 } 1368 mixer->oss_dev_alloc = 1; 1369 mixer->card = card; 1370 if (*card->mixername) 1371 strlcpy(mixer->name, card->mixername, sizeof(mixer->name)); 1372 else 1373 snprintf(mixer->name, sizeof(mixer->name), 1374 "mixer%i", card->number); 1375 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1376 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, 1377 card->number, 1378 mixer->name); 1379 #endif 1380 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) 1381 mixer->slots[idx].number = idx; 1382 card->mixer_oss = mixer; 1383 snd_mixer_oss_build(mixer); 1384 snd_mixer_oss_proc_init(mixer); 1385 } else { 1386 mixer = card->mixer_oss; 1387 if (mixer == NULL) 1388 return 0; 1389 if (mixer->oss_dev_alloc) { 1390 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1391 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); 1392 #endif 1393 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); 1394 mixer->oss_dev_alloc = 0; 1395 } 1396 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) 1397 return 0; 1398 snd_mixer_oss_proc_done(mixer); 1399 return snd_mixer_oss_free1(mixer); 1400 } 1401 return 0; 1402 } 1403 1404 static int __init alsa_mixer_oss_init(void) 1405 { 1406 int idx; 1407 1408 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; 1409 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1410 if (snd_cards[idx]) 1411 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER); 1412 } 1413 return 0; 1414 } 1415 1416 static void __exit alsa_mixer_oss_exit(void) 1417 { 1418 int idx; 1419 1420 snd_mixer_oss_notify_callback = NULL; 1421 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1422 if (snd_cards[idx]) 1423 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE); 1424 } 1425 } 1426 1427 module_init(alsa_mixer_oss_init) 1428 module_exit(alsa_mixer_oss_exit) 1429