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