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 } 398 399 #ifdef CONFIG_COMPAT 400 /* all compatible */ 401 static long snd_mixer_oss_ioctl_compat(struct file *file, unsigned int cmd, 402 unsigned long arg) 403 { 404 return snd_mixer_oss_ioctl1(file->private_data, cmd, 405 (unsigned long)compat_ptr(arg)); 406 } 407 #else 408 #define snd_mixer_oss_ioctl_compat NULL 409 #endif 410 411 /* 412 * REGISTRATION PART 413 */ 414 415 static const struct file_operations snd_mixer_oss_f_ops = 416 { 417 .owner = THIS_MODULE, 418 .open = snd_mixer_oss_open, 419 .release = snd_mixer_oss_release, 420 .llseek = no_llseek, 421 .unlocked_ioctl = snd_mixer_oss_ioctl, 422 .compat_ioctl = snd_mixer_oss_ioctl_compat, 423 }; 424 425 /* 426 * utilities 427 */ 428 429 static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) 430 { 431 long orange = omax - omin, nrange = nmax - nmin; 432 433 if (orange == 0) 434 return 0; 435 return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin; 436 } 437 438 /* convert from alsa native to oss values (0-100) */ 439 static long snd_mixer_oss_conv1(long val, long min, long max, int *old) 440 { 441 if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) 442 return *old; 443 return snd_mixer_oss_conv(val, min, max, 0, 100); 444 } 445 446 /* convert from oss to alsa native values */ 447 static long snd_mixer_oss_conv2(long val, long min, long max) 448 { 449 return snd_mixer_oss_conv(val, 0, 100, min, max); 450 } 451 452 #if 0 453 static void snd_mixer_oss_recsrce_set(struct snd_card *card, int slot) 454 { 455 struct snd_mixer_oss *mixer = card->mixer_oss; 456 if (mixer) 457 mixer->mask_recsrc |= 1 << slot; 458 } 459 460 static int snd_mixer_oss_recsrce_get(struct snd_card *card, int slot) 461 { 462 struct snd_mixer_oss *mixer = card->mixer_oss; 463 if (mixer && (mixer->mask_recsrc & (1 << slot))) 464 return 1; 465 return 0; 466 } 467 #endif 468 469 #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 470 471 #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 472 #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 473 #define SNDRV_MIXER_OSS_ITEM_GROUTE 2 474 #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 475 #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 476 #define SNDRV_MIXER_OSS_ITEM_PROUTE 5 477 #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 478 #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 479 #define SNDRV_MIXER_OSS_ITEM_CROUTE 8 480 #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 481 #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 482 483 #define SNDRV_MIXER_OSS_ITEM_COUNT 11 484 485 #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) 486 #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) 487 #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) 488 #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) 489 #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) 490 #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) 491 #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) 492 #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) 493 #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) 494 #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) 495 #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) 496 497 struct slot { 498 unsigned int signature; 499 unsigned int present; 500 unsigned int channels; 501 unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; 502 unsigned int capture_item; 503 struct snd_mixer_oss_assign_table *assigned; 504 unsigned int allocated: 1; 505 }; 506 507 #define ID_UNKNOWN ((unsigned int)-1) 508 509 static struct snd_kcontrol *snd_mixer_oss_test_id(struct snd_mixer_oss *mixer, const char *name, int index) 510 { 511 struct snd_card *card = mixer->card; 512 struct snd_ctl_elem_id id; 513 514 memset(&id, 0, sizeof(id)); 515 id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; 516 strlcpy(id.name, name, sizeof(id.name)); 517 id.index = index; 518 return snd_ctl_find_id(card, &id); 519 } 520 521 static void snd_mixer_oss_get_volume1_vol(struct snd_mixer_oss_file *fmixer, 522 struct snd_mixer_oss_slot *pslot, 523 unsigned int numid, 524 int *left, int *right) 525 { 526 struct snd_ctl_elem_info *uinfo; 527 struct snd_ctl_elem_value *uctl; 528 struct snd_kcontrol *kctl; 529 struct snd_card *card = fmixer->card; 530 531 if (numid == ID_UNKNOWN) 532 return; 533 down_read(&card->controls_rwsem); 534 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 535 up_read(&card->controls_rwsem); 536 return; 537 } 538 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 539 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 540 if (uinfo == NULL || uctl == NULL) 541 goto __unalloc; 542 if (kctl->info(kctl, uinfo)) 543 goto __unalloc; 544 if (kctl->get(kctl, uctl)) 545 goto __unalloc; 546 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 547 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 548 goto __unalloc; 549 *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); 550 if (uinfo->count > 1) 551 *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); 552 __unalloc: 553 up_read(&card->controls_rwsem); 554 kfree(uctl); 555 kfree(uinfo); 556 } 557 558 static void snd_mixer_oss_get_volume1_sw(struct snd_mixer_oss_file *fmixer, 559 struct snd_mixer_oss_slot *pslot, 560 unsigned int numid, 561 int *left, int *right, 562 int route) 563 { 564 struct snd_ctl_elem_info *uinfo; 565 struct snd_ctl_elem_value *uctl; 566 struct snd_kcontrol *kctl; 567 struct snd_card *card = fmixer->card; 568 569 if (numid == ID_UNKNOWN) 570 return; 571 down_read(&card->controls_rwsem); 572 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 573 up_read(&card->controls_rwsem); 574 return; 575 } 576 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 577 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 578 if (uinfo == NULL || uctl == NULL) 579 goto __unalloc; 580 if (kctl->info(kctl, uinfo)) 581 goto __unalloc; 582 if (kctl->get(kctl, uctl)) 583 goto __unalloc; 584 if (!uctl->value.integer.value[0]) { 585 *left = 0; 586 if (uinfo->count == 1) 587 *right = 0; 588 } 589 if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) 590 *right = 0; 591 __unalloc: 592 up_read(&card->controls_rwsem); 593 kfree(uctl); 594 kfree(uinfo); 595 } 596 597 static int snd_mixer_oss_get_volume1(struct snd_mixer_oss_file *fmixer, 598 struct snd_mixer_oss_slot *pslot, 599 int *left, int *right) 600 { 601 struct slot *slot = pslot->private_data; 602 603 *left = *right = 100; 604 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 605 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 606 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 607 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 608 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 609 snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 610 } 611 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 612 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 613 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 614 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 615 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 616 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 617 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 618 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 619 } 620 return 0; 621 } 622 623 static void snd_mixer_oss_put_volume1_vol(struct snd_mixer_oss_file *fmixer, 624 struct snd_mixer_oss_slot *pslot, 625 unsigned int numid, 626 int left, int right) 627 { 628 struct snd_ctl_elem_info *uinfo; 629 struct snd_ctl_elem_value *uctl; 630 struct snd_kcontrol *kctl; 631 struct snd_card *card = fmixer->card; 632 int res; 633 634 if (numid == ID_UNKNOWN) 635 return; 636 down_read(&card->controls_rwsem); 637 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 638 up_read(&card->controls_rwsem); 639 return; 640 } 641 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 642 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 643 if (uinfo == NULL || uctl == NULL) 644 goto __unalloc; 645 if (kctl->info(kctl, uinfo)) 646 goto __unalloc; 647 if (uinfo->type == SNDRV_CTL_ELEM_TYPE_BOOLEAN && 648 uinfo->value.integer.min == 0 && uinfo->value.integer.max == 1) 649 goto __unalloc; 650 uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); 651 if (uinfo->count > 1) 652 uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); 653 if ((res = kctl->put(kctl, uctl)) < 0) 654 goto __unalloc; 655 if (res > 0) 656 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 657 __unalloc: 658 up_read(&card->controls_rwsem); 659 kfree(uctl); 660 kfree(uinfo); 661 } 662 663 static void snd_mixer_oss_put_volume1_sw(struct snd_mixer_oss_file *fmixer, 664 struct snd_mixer_oss_slot *pslot, 665 unsigned int numid, 666 int left, int right, 667 int route) 668 { 669 struct snd_ctl_elem_info *uinfo; 670 struct snd_ctl_elem_value *uctl; 671 struct snd_kcontrol *kctl; 672 struct snd_card *card = fmixer->card; 673 int res; 674 675 if (numid == ID_UNKNOWN) 676 return; 677 down_read(&card->controls_rwsem); 678 if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { 679 up_read(&card->controls_rwsem); 680 return; 681 } 682 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 683 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 684 if (uinfo == NULL || uctl == NULL) 685 goto __unalloc; 686 if (kctl->info(kctl, uinfo)) 687 goto __unalloc; 688 if (uinfo->count > 1) { 689 uctl->value.integer.value[0] = left > 0 ? 1 : 0; 690 uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; 691 if (route) { 692 uctl->value.integer.value[1] = 693 uctl->value.integer.value[2] = 0; 694 } 695 } else { 696 uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; 697 } 698 if ((res = kctl->put(kctl, uctl)) < 0) 699 goto __unalloc; 700 if (res > 0) 701 snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 702 __unalloc: 703 up_read(&card->controls_rwsem); 704 kfree(uctl); 705 kfree(uinfo); 706 } 707 708 static int snd_mixer_oss_put_volume1(struct snd_mixer_oss_file *fmixer, 709 struct snd_mixer_oss_slot *pslot, 710 int left, int right) 711 { 712 struct slot *slot = pslot->private_data; 713 714 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { 715 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); 716 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) 717 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 718 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) { 719 snd_mixer_oss_put_volume1_vol(fmixer, pslot, 720 slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); 721 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { 722 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); 723 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { 724 snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); 725 } 726 if (left || right) { 727 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) 728 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 729 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) 730 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 731 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) 732 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 733 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) 734 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 735 if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) 736 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 737 if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) 738 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 739 } else { 740 if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { 741 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); 742 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 743 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], left, right, 0); 744 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { 745 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); 746 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { 747 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); 748 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 749 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], left, right, 1); 750 } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { 751 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); 752 } 753 } 754 return 0; 755 } 756 757 static int snd_mixer_oss_get_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 758 struct snd_mixer_oss_slot *pslot, 759 int *active) 760 { 761 struct slot *slot = pslot->private_data; 762 int left, right; 763 764 left = right = 1; 765 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); 766 *active = (left || right) ? 1 : 0; 767 return 0; 768 } 769 770 static int snd_mixer_oss_get_recsrc1_route(struct snd_mixer_oss_file *fmixer, 771 struct snd_mixer_oss_slot *pslot, 772 int *active) 773 { 774 struct slot *slot = pslot->private_data; 775 int left, right; 776 777 left = right = 1; 778 snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); 779 *active = (left || right) ? 1 : 0; 780 return 0; 781 } 782 783 static int snd_mixer_oss_put_recsrc1_sw(struct snd_mixer_oss_file *fmixer, 784 struct snd_mixer_oss_slot *pslot, 785 int active) 786 { 787 struct slot *slot = pslot->private_data; 788 789 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); 790 return 0; 791 } 792 793 static int snd_mixer_oss_put_recsrc1_route(struct snd_mixer_oss_file *fmixer, 794 struct snd_mixer_oss_slot *pslot, 795 int active) 796 { 797 struct slot *slot = pslot->private_data; 798 799 snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); 800 return 0; 801 } 802 803 static int snd_mixer_oss_get_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int *active_index) 804 { 805 struct snd_card *card = fmixer->card; 806 struct snd_mixer_oss *mixer = fmixer->mixer; 807 struct snd_kcontrol *kctl; 808 struct snd_mixer_oss_slot *pslot; 809 struct slot *slot; 810 struct snd_ctl_elem_info *uinfo; 811 struct snd_ctl_elem_value *uctl; 812 int err, idx; 813 814 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 815 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 816 if (uinfo == NULL || uctl == NULL) { 817 err = -ENOMEM; 818 goto __free_only; 819 } 820 down_read(&card->controls_rwsem); 821 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 822 if (! kctl) { 823 err = -ENOENT; 824 goto __unlock; 825 } 826 if ((err = kctl->info(kctl, uinfo)) < 0) 827 goto __unlock; 828 if ((err = kctl->get(kctl, uctl)) < 0) 829 goto __unlock; 830 for (idx = 0; idx < 32; idx++) { 831 if (!(mixer->mask_recsrc & (1 << idx))) 832 continue; 833 pslot = &mixer->slots[idx]; 834 slot = pslot->private_data; 835 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 836 continue; 837 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 838 continue; 839 if (slot->capture_item == uctl->value.enumerated.item[0]) { 840 *active_index = idx; 841 break; 842 } 843 } 844 err = 0; 845 __unlock: 846 up_read(&card->controls_rwsem); 847 __free_only: 848 kfree(uctl); 849 kfree(uinfo); 850 return err; 851 } 852 853 static int snd_mixer_oss_put_recsrc2(struct snd_mixer_oss_file *fmixer, unsigned int active_index) 854 { 855 struct snd_card *card = fmixer->card; 856 struct snd_mixer_oss *mixer = fmixer->mixer; 857 struct snd_kcontrol *kctl; 858 struct snd_mixer_oss_slot *pslot; 859 struct slot *slot = NULL; 860 struct snd_ctl_elem_info *uinfo; 861 struct snd_ctl_elem_value *uctl; 862 int err; 863 unsigned int idx; 864 865 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 866 uctl = kzalloc(sizeof(*uctl), GFP_KERNEL); 867 if (uinfo == NULL || uctl == NULL) { 868 err = -ENOMEM; 869 goto __free_only; 870 } 871 down_read(&card->controls_rwsem); 872 kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); 873 if (! kctl) { 874 err = -ENOENT; 875 goto __unlock; 876 } 877 if ((err = kctl->info(kctl, uinfo)) < 0) 878 goto __unlock; 879 for (idx = 0; idx < 32; idx++) { 880 if (!(mixer->mask_recsrc & (1 << idx))) 881 continue; 882 pslot = &mixer->slots[idx]; 883 slot = pslot->private_data; 884 if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) 885 continue; 886 if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) 887 continue; 888 if (idx == active_index) 889 break; 890 slot = NULL; 891 } 892 if (! slot) 893 goto __unlock; 894 for (idx = 0; idx < uinfo->count; idx++) 895 uctl->value.enumerated.item[idx] = slot->capture_item; 896 err = kctl->put(kctl, uctl); 897 if (err > 0) 898 snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); 899 err = 0; 900 __unlock: 901 up_read(&card->controls_rwsem); 902 __free_only: 903 kfree(uctl); 904 kfree(uinfo); 905 return err; 906 } 907 908 struct snd_mixer_oss_assign_table { 909 int oss_id; 910 const char *name; 911 int index; 912 }; 913 914 static int snd_mixer_oss_build_test(struct snd_mixer_oss *mixer, struct slot *slot, const char *name, int index, int item) 915 { 916 struct snd_ctl_elem_info *info; 917 struct snd_kcontrol *kcontrol; 918 struct snd_card *card = mixer->card; 919 int err; 920 921 down_read(&card->controls_rwsem); 922 kcontrol = snd_mixer_oss_test_id(mixer, name, index); 923 if (kcontrol == NULL) { 924 up_read(&card->controls_rwsem); 925 return 0; 926 } 927 info = kmalloc(sizeof(*info), GFP_KERNEL); 928 if (! info) { 929 up_read(&card->controls_rwsem); 930 return -ENOMEM; 931 } 932 if ((err = kcontrol->info(kcontrol, info)) < 0) { 933 up_read(&card->controls_rwsem); 934 kfree(info); 935 return err; 936 } 937 slot->numid[item] = kcontrol->id.numid; 938 up_read(&card->controls_rwsem); 939 if (info->count > slot->channels) 940 slot->channels = info->count; 941 slot->present |= 1 << item; 942 kfree(info); 943 return 0; 944 } 945 946 static void snd_mixer_oss_slot_free(struct snd_mixer_oss_slot *chn) 947 { 948 struct slot *p = chn->private_data; 949 if (p) { 950 if (p->allocated && p->assigned) { 951 kfree(p->assigned->name); 952 kfree(p->assigned); 953 } 954 kfree(p); 955 } 956 } 957 958 static void mixer_slot_clear(struct snd_mixer_oss_slot *rslot) 959 { 960 int idx = rslot->number; /* remember this */ 961 if (rslot->private_free) 962 rslot->private_free(rslot); 963 memset(rslot, 0, sizeof(*rslot)); 964 rslot->number = idx; 965 } 966 967 /* In a separate function to keep gcc 3.2 happy - do NOT merge this in 968 snd_mixer_oss_build_input! */ 969 static int snd_mixer_oss_build_test_all(struct snd_mixer_oss *mixer, 970 struct snd_mixer_oss_assign_table *ptr, 971 struct slot *slot) 972 { 973 char str[64]; 974 int err; 975 976 err = snd_mixer_oss_build_test(mixer, slot, ptr->name, ptr->index, 977 SNDRV_MIXER_OSS_ITEM_GLOBAL); 978 if (err) 979 return err; 980 sprintf(str, "%s Switch", ptr->name); 981 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 982 SNDRV_MIXER_OSS_ITEM_GSWITCH); 983 if (err) 984 return err; 985 sprintf(str, "%s Route", ptr->name); 986 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 987 SNDRV_MIXER_OSS_ITEM_GROUTE); 988 if (err) 989 return err; 990 sprintf(str, "%s Volume", ptr->name); 991 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 992 SNDRV_MIXER_OSS_ITEM_GVOLUME); 993 if (err) 994 return err; 995 sprintf(str, "%s Playback Switch", ptr->name); 996 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 997 SNDRV_MIXER_OSS_ITEM_PSWITCH); 998 if (err) 999 return err; 1000 sprintf(str, "%s Playback Route", ptr->name); 1001 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1002 SNDRV_MIXER_OSS_ITEM_PROUTE); 1003 if (err) 1004 return err; 1005 sprintf(str, "%s Playback Volume", ptr->name); 1006 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1007 SNDRV_MIXER_OSS_ITEM_PVOLUME); 1008 if (err) 1009 return err; 1010 sprintf(str, "%s Capture Switch", ptr->name); 1011 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1012 SNDRV_MIXER_OSS_ITEM_CSWITCH); 1013 if (err) 1014 return err; 1015 sprintf(str, "%s Capture Route", ptr->name); 1016 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1017 SNDRV_MIXER_OSS_ITEM_CROUTE); 1018 if (err) 1019 return err; 1020 sprintf(str, "%s Capture Volume", ptr->name); 1021 err = snd_mixer_oss_build_test(mixer, slot, str, ptr->index, 1022 SNDRV_MIXER_OSS_ITEM_CVOLUME); 1023 if (err) 1024 return err; 1025 1026 return 0; 1027 } 1028 1029 /* 1030 * build an OSS mixer element. 1031 * ptr_allocated means the entry is dynamically allocated (change via proc file). 1032 * when replace_old = 1, the old entry is replaced with the new one. 1033 */ 1034 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) 1035 { 1036 struct slot slot; 1037 struct slot *pslot; 1038 struct snd_kcontrol *kctl; 1039 struct snd_mixer_oss_slot *rslot; 1040 char str[64]; 1041 1042 /* check if already assigned */ 1043 if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) 1044 return 0; 1045 1046 memset(&slot, 0, sizeof(slot)); 1047 memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ 1048 if (snd_mixer_oss_build_test_all(mixer, ptr, &slot)) 1049 return 0; 1050 down_read(&mixer->card->controls_rwsem); 1051 if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) { 1052 struct snd_ctl_elem_info *uinfo; 1053 1054 uinfo = kzalloc(sizeof(*uinfo), GFP_KERNEL); 1055 if (! uinfo) { 1056 up_read(&mixer->card->controls_rwsem); 1057 return -ENOMEM; 1058 } 1059 1060 if (kctl->info(kctl, uinfo)) { 1061 up_read(&mixer->card->controls_rwsem); 1062 kfree(uinfo); 1063 return 0; 1064 } 1065 strcpy(str, ptr->name); 1066 if (!strcmp(str, "Master")) 1067 strcpy(str, "Mix"); 1068 if (!strcmp(str, "Master Mono")) 1069 strcpy(str, "Mix Mono"); 1070 slot.capture_item = 0; 1071 if (!strcmp(uinfo->value.enumerated.name, str)) { 1072 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1073 } else { 1074 for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { 1075 uinfo->value.enumerated.item = slot.capture_item; 1076 if (kctl->info(kctl, uinfo)) { 1077 up_read(&mixer->card->controls_rwsem); 1078 kfree(uinfo); 1079 return 0; 1080 } 1081 if (!strcmp(uinfo->value.enumerated.name, str)) { 1082 slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; 1083 break; 1084 } 1085 } 1086 } 1087 kfree(uinfo); 1088 } 1089 up_read(&mixer->card->controls_rwsem); 1090 if (slot.present != 0) { 1091 pslot = kmalloc(sizeof(slot), GFP_KERNEL); 1092 if (! pslot) 1093 return -ENOMEM; 1094 *pslot = slot; 1095 pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; 1096 pslot->assigned = ptr; 1097 pslot->allocated = ptr_allocated; 1098 rslot = &mixer->slots[ptr->oss_id]; 1099 mixer_slot_clear(rslot); 1100 rslot->stereo = slot.channels > 1 ? 1 : 0; 1101 rslot->get_volume = snd_mixer_oss_get_volume1; 1102 rslot->put_volume = snd_mixer_oss_put_volume1; 1103 /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ 1104 if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { 1105 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; 1106 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; 1107 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { 1108 rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; 1109 rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; 1110 } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { 1111 mixer->mask_recsrc |= 1 << ptr->oss_id; 1112 } 1113 rslot->private_data = pslot; 1114 rslot->private_free = snd_mixer_oss_slot_free; 1115 return 1; 1116 } 1117 return 0; 1118 } 1119 1120 #ifdef CONFIG_SND_PROC_FS 1121 /* 1122 */ 1123 #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name 1124 static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { 1125 MIXER_VOL(VOLUME), 1126 MIXER_VOL(BASS), 1127 MIXER_VOL(TREBLE), 1128 MIXER_VOL(SYNTH), 1129 MIXER_VOL(PCM), 1130 MIXER_VOL(SPEAKER), 1131 MIXER_VOL(LINE), 1132 MIXER_VOL(MIC), 1133 MIXER_VOL(CD), 1134 MIXER_VOL(IMIX), 1135 MIXER_VOL(ALTPCM), 1136 MIXER_VOL(RECLEV), 1137 MIXER_VOL(IGAIN), 1138 MIXER_VOL(OGAIN), 1139 MIXER_VOL(LINE1), 1140 MIXER_VOL(LINE2), 1141 MIXER_VOL(LINE3), 1142 MIXER_VOL(DIGITAL1), 1143 MIXER_VOL(DIGITAL2), 1144 MIXER_VOL(DIGITAL3), 1145 MIXER_VOL(PHONEIN), 1146 MIXER_VOL(PHONEOUT), 1147 MIXER_VOL(VIDEO), 1148 MIXER_VOL(RADIO), 1149 MIXER_VOL(MONITOR), 1150 }; 1151 1152 /* 1153 * /proc interface 1154 */ 1155 1156 static void snd_mixer_oss_proc_read(struct snd_info_entry *entry, 1157 struct snd_info_buffer *buffer) 1158 { 1159 struct snd_mixer_oss *mixer = entry->private_data; 1160 int i; 1161 1162 mutex_lock(&mixer->reg_mutex); 1163 for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { 1164 struct slot *p; 1165 1166 if (! oss_mixer_names[i]) 1167 continue; 1168 p = (struct slot *)mixer->slots[i].private_data; 1169 snd_iprintf(buffer, "%s ", oss_mixer_names[i]); 1170 if (p && p->assigned) 1171 snd_iprintf(buffer, "\"%s\" %d\n", 1172 p->assigned->name, 1173 p->assigned->index); 1174 else 1175 snd_iprintf(buffer, "\"\" 0\n"); 1176 } 1177 mutex_unlock(&mixer->reg_mutex); 1178 } 1179 1180 static void snd_mixer_oss_proc_write(struct snd_info_entry *entry, 1181 struct snd_info_buffer *buffer) 1182 { 1183 struct snd_mixer_oss *mixer = entry->private_data; 1184 char line[128], str[32], idxstr[16]; 1185 const char *cptr; 1186 unsigned int idx; 1187 int ch; 1188 struct snd_mixer_oss_assign_table *tbl; 1189 struct slot *slot; 1190 1191 while (!snd_info_get_line(buffer, line, sizeof(line))) { 1192 cptr = snd_info_get_str(str, line, sizeof(str)); 1193 for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) 1194 if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) 1195 break; 1196 if (ch >= SNDRV_OSS_MAX_MIXERS) { 1197 pr_err("ALSA: mixer_oss: invalid OSS volume '%s'\n", 1198 str); 1199 continue; 1200 } 1201 cptr = snd_info_get_str(str, cptr, sizeof(str)); 1202 if (! *str) { 1203 /* remove the entry */ 1204 mutex_lock(&mixer->reg_mutex); 1205 mixer_slot_clear(&mixer->slots[ch]); 1206 mutex_unlock(&mixer->reg_mutex); 1207 continue; 1208 } 1209 snd_info_get_str(idxstr, cptr, sizeof(idxstr)); 1210 idx = simple_strtoul(idxstr, NULL, 10); 1211 if (idx >= 0x4000) { /* too big */ 1212 pr_err("ALSA: mixer_oss: invalid index %d\n", idx); 1213 continue; 1214 } 1215 mutex_lock(&mixer->reg_mutex); 1216 slot = (struct slot *)mixer->slots[ch].private_data; 1217 if (slot && slot->assigned && 1218 slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) 1219 /* not changed */ 1220 goto __unlock; 1221 tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); 1222 if (!tbl) 1223 goto __unlock; 1224 tbl->oss_id = ch; 1225 tbl->name = kstrdup(str, GFP_KERNEL); 1226 if (! tbl->name) { 1227 kfree(tbl); 1228 goto __unlock; 1229 } 1230 tbl->index = idx; 1231 if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { 1232 kfree(tbl->name); 1233 kfree(tbl); 1234 } 1235 __unlock: 1236 mutex_unlock(&mixer->reg_mutex); 1237 } 1238 } 1239 1240 static void snd_mixer_oss_proc_init(struct snd_mixer_oss *mixer) 1241 { 1242 struct snd_info_entry *entry; 1243 1244 entry = snd_info_create_card_entry(mixer->card, "oss_mixer", 1245 mixer->card->proc_root); 1246 if (! entry) 1247 return; 1248 entry->content = SNDRV_INFO_CONTENT_TEXT; 1249 entry->mode = S_IFREG | S_IRUGO | S_IWUSR; 1250 entry->c.text.read = snd_mixer_oss_proc_read; 1251 entry->c.text.write = snd_mixer_oss_proc_write; 1252 entry->private_data = mixer; 1253 if (snd_info_register(entry) < 0) { 1254 snd_info_free_entry(entry); 1255 entry = NULL; 1256 } 1257 mixer->proc_entry = entry; 1258 } 1259 1260 static void snd_mixer_oss_proc_done(struct snd_mixer_oss *mixer) 1261 { 1262 snd_info_free_entry(mixer->proc_entry); 1263 mixer->proc_entry = NULL; 1264 } 1265 #else /* !CONFIG_SND_PROC_FS */ 1266 #define snd_mixer_oss_proc_init(mix) 1267 #define snd_mixer_oss_proc_done(mix) 1268 #endif /* CONFIG_SND_PROC_FS */ 1269 1270 static void snd_mixer_oss_build(struct snd_mixer_oss *mixer) 1271 { 1272 static struct snd_mixer_oss_assign_table table[] = { 1273 { SOUND_MIXER_VOLUME, "Master", 0 }, 1274 { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ 1275 { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, 1276 { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, 1277 { SOUND_MIXER_SYNTH, "Synth", 0 }, 1278 { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ 1279 { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ 1280 { SOUND_MIXER_PCM, "PCM", 0 }, 1281 { SOUND_MIXER_SPEAKER, "Beep", 0 }, 1282 { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, /* fallback */ 1283 { SOUND_MIXER_SPEAKER, "Speaker", 0 }, /* fallback */ 1284 { SOUND_MIXER_LINE, "Line", 0 }, 1285 { SOUND_MIXER_MIC, "Mic", 0 }, 1286 { SOUND_MIXER_CD, "CD", 0 }, 1287 { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, 1288 { SOUND_MIXER_ALTPCM, "PCM", 1 }, 1289 { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ 1290 { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ 1291 { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, 1292 { SOUND_MIXER_IGAIN, "Capture", 0 }, 1293 { SOUND_MIXER_OGAIN, "Playback", 0 }, 1294 { SOUND_MIXER_LINE1, "Aux", 0 }, 1295 { SOUND_MIXER_LINE2, "Aux", 1 }, 1296 { SOUND_MIXER_LINE3, "Aux", 2 }, 1297 { SOUND_MIXER_DIGITAL1, "Digital", 0 }, 1298 { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ 1299 { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ 1300 { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ 1301 { SOUND_MIXER_DIGITAL2, "Digital", 1 }, 1302 { SOUND_MIXER_DIGITAL3, "Digital", 2 }, 1303 { SOUND_MIXER_PHONEIN, "Phone", 0 }, 1304 { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, 1305 { SOUND_MIXER_PHONEOUT, "Speaker", 0 }, /*fallback*/ 1306 { SOUND_MIXER_PHONEOUT, "Mono", 0 }, /*fallback*/ 1307 { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ 1308 { SOUND_MIXER_VIDEO, "Video", 0 }, 1309 { SOUND_MIXER_RADIO, "Radio", 0 }, 1310 { SOUND_MIXER_MONITOR, "Monitor", 0 } 1311 }; 1312 unsigned int idx; 1313 1314 for (idx = 0; idx < ARRAY_SIZE(table); idx++) 1315 snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); 1316 if (mixer->mask_recsrc) { 1317 mixer->get_recsrc = snd_mixer_oss_get_recsrc2; 1318 mixer->put_recsrc = snd_mixer_oss_put_recsrc2; 1319 } 1320 } 1321 1322 /* 1323 * 1324 */ 1325 1326 static int snd_mixer_oss_free1(void *private) 1327 { 1328 struct snd_mixer_oss *mixer = private; 1329 struct snd_card *card; 1330 int idx; 1331 1332 if (!mixer) 1333 return 0; 1334 card = mixer->card; 1335 if (snd_BUG_ON(mixer != card->mixer_oss)) 1336 return -ENXIO; 1337 card->mixer_oss = NULL; 1338 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { 1339 struct snd_mixer_oss_slot *chn = &mixer->slots[idx]; 1340 if (chn->private_free) 1341 chn->private_free(chn); 1342 } 1343 kfree(mixer); 1344 return 0; 1345 } 1346 1347 static int snd_mixer_oss_notify_handler(struct snd_card *card, int cmd) 1348 { 1349 struct snd_mixer_oss *mixer; 1350 1351 if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { 1352 int idx, err; 1353 1354 mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); 1355 if (mixer == NULL) 1356 return -ENOMEM; 1357 mutex_init(&mixer->reg_mutex); 1358 if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, 1359 card, 0, 1360 &snd_mixer_oss_f_ops, card)) < 0) { 1361 dev_err(card->dev, 1362 "unable to register OSS mixer device %i:%i\n", 1363 card->number, 0); 1364 kfree(mixer); 1365 return err; 1366 } 1367 mixer->oss_dev_alloc = 1; 1368 mixer->card = card; 1369 if (*card->mixername) 1370 strlcpy(mixer->name, card->mixername, sizeof(mixer->name)); 1371 else 1372 snprintf(mixer->name, sizeof(mixer->name), 1373 "mixer%i", card->number); 1374 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1375 snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, 1376 card->number, 1377 mixer->name); 1378 #endif 1379 for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) 1380 mixer->slots[idx].number = idx; 1381 card->mixer_oss = mixer; 1382 snd_mixer_oss_build(mixer); 1383 snd_mixer_oss_proc_init(mixer); 1384 } else { 1385 mixer = card->mixer_oss; 1386 if (mixer == NULL) 1387 return 0; 1388 if (mixer->oss_dev_alloc) { 1389 #ifdef SNDRV_OSS_INFO_DEV_MIXERS 1390 snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); 1391 #endif 1392 snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); 1393 mixer->oss_dev_alloc = 0; 1394 } 1395 if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) 1396 return 0; 1397 snd_mixer_oss_proc_done(mixer); 1398 return snd_mixer_oss_free1(mixer); 1399 } 1400 return 0; 1401 } 1402 1403 static int __init alsa_mixer_oss_init(void) 1404 { 1405 int idx; 1406 1407 snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; 1408 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1409 if (snd_cards[idx]) 1410 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER); 1411 } 1412 return 0; 1413 } 1414 1415 static void __exit alsa_mixer_oss_exit(void) 1416 { 1417 int idx; 1418 1419 snd_mixer_oss_notify_callback = NULL; 1420 for (idx = 0; idx < SNDRV_CARDS; idx++) { 1421 if (snd_cards[idx]) 1422 snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE); 1423 } 1424 } 1425 1426 module_init(alsa_mixer_oss_init) 1427 module_exit(alsa_mixer_oss_exit) 1428 1429 EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); 1430