Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * OSS emulation layer for the mixer interface |
| 3 | * Copyright (c) by Jaroslav Kysela <perex@suse.cz> |
| 4 | * |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #include <sound/driver.h> |
| 23 | #include <linux/init.h> |
| 24 | #include <linux/smp_lock.h> |
| 25 | #include <linux/slab.h> |
| 26 | #include <linux/time.h> |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 27 | #include <linux/string.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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@suse.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 | int cardnum = SNDRV_MINOR_OSS_CARD(iminor(inode)); |
| 45 | snd_card_t *card; |
| 46 | snd_mixer_oss_file_t *fmixer; |
| 47 | int err; |
| 48 | |
| 49 | if ((card = snd_cards[cardnum]) == NULL) |
| 50 | return -ENODEV; |
| 51 | if (card->mixer_oss == NULL) |
| 52 | return -ENODEV; |
| 53 | err = snd_card_file_add(card, file); |
| 54 | if (err < 0) |
| 55 | return err; |
| 56 | fmixer = kcalloc(1, sizeof(*fmixer), GFP_KERNEL); |
| 57 | if (fmixer == NULL) { |
| 58 | snd_card_file_remove(card, file); |
| 59 | return -ENOMEM; |
| 60 | } |
| 61 | fmixer->card = card; |
| 62 | fmixer->mixer = card->mixer_oss; |
| 63 | file->private_data = fmixer; |
| 64 | if (!try_module_get(card->module)) { |
| 65 | kfree(fmixer); |
| 66 | snd_card_file_remove(card, file); |
| 67 | return -EFAULT; |
| 68 | } |
| 69 | return 0; |
| 70 | } |
| 71 | |
| 72 | static int snd_mixer_oss_release(struct inode *inode, struct file *file) |
| 73 | { |
| 74 | snd_mixer_oss_file_t *fmixer; |
| 75 | |
| 76 | if (file->private_data) { |
| 77 | fmixer = (snd_mixer_oss_file_t *) file->private_data; |
| 78 | module_put(fmixer->card->module); |
| 79 | snd_card_file_remove(fmixer->card, file); |
| 80 | kfree(fmixer); |
| 81 | } |
| 82 | return 0; |
| 83 | } |
| 84 | |
| 85 | static int snd_mixer_oss_info(snd_mixer_oss_file_t *fmixer, |
| 86 | mixer_info __user *_info) |
| 87 | { |
| 88 | snd_card_t *card = fmixer->card; |
| 89 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 90 | struct mixer_info info; |
| 91 | |
| 92 | memset(&info, 0, sizeof(info)); |
| 93 | strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); |
| 94 | strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); |
| 95 | info.modify_counter = card->mixer_oss_change_count; |
| 96 | if (copy_to_user(_info, &info, sizeof(info))) |
| 97 | return -EFAULT; |
| 98 | return 0; |
| 99 | } |
| 100 | |
| 101 | static int snd_mixer_oss_info_obsolete(snd_mixer_oss_file_t *fmixer, |
| 102 | _old_mixer_info __user *_info) |
| 103 | { |
| 104 | snd_card_t *card = fmixer->card; |
| 105 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 106 | _old_mixer_info info; |
| 107 | |
| 108 | memset(&info, 0, sizeof(info)); |
| 109 | strlcpy(info.id, mixer && mixer->id[0] ? mixer->id : card->driver, sizeof(info.id)); |
| 110 | strlcpy(info.name, mixer && mixer->name[0] ? mixer->name : card->mixername, sizeof(info.name)); |
| 111 | if (copy_to_user(_info, &info, sizeof(info))) |
| 112 | return -EFAULT; |
| 113 | return 0; |
| 114 | } |
| 115 | |
| 116 | static int snd_mixer_oss_caps(snd_mixer_oss_file_t *fmixer) |
| 117 | { |
| 118 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 119 | int result = 0; |
| 120 | |
| 121 | if (mixer == NULL) |
| 122 | return -EIO; |
| 123 | if (mixer->get_recsrc && mixer->put_recsrc) |
| 124 | result |= SOUND_CAP_EXCL_INPUT; |
| 125 | return result; |
| 126 | } |
| 127 | |
| 128 | static int snd_mixer_oss_devmask(snd_mixer_oss_file_t *fmixer) |
| 129 | { |
| 130 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 131 | snd_mixer_oss_slot_t *pslot; |
| 132 | int result = 0, chn; |
| 133 | |
| 134 | if (mixer == NULL) |
| 135 | return -EIO; |
| 136 | for (chn = 0; chn < 31; chn++) { |
| 137 | pslot = &mixer->slots[chn]; |
| 138 | if (pslot->put_volume || pslot->put_recsrc) |
| 139 | result |= 1 << chn; |
| 140 | } |
| 141 | return result; |
| 142 | } |
| 143 | |
| 144 | static int snd_mixer_oss_stereodevs(snd_mixer_oss_file_t *fmixer) |
| 145 | { |
| 146 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 147 | snd_mixer_oss_slot_t *pslot; |
| 148 | int result = 0, chn; |
| 149 | |
| 150 | if (mixer == NULL) |
| 151 | return -EIO; |
| 152 | for (chn = 0; chn < 31; chn++) { |
| 153 | pslot = &mixer->slots[chn]; |
| 154 | if (pslot->put_volume && pslot->stereo) |
| 155 | result |= 1 << chn; |
| 156 | } |
| 157 | return result; |
| 158 | } |
| 159 | |
| 160 | static int snd_mixer_oss_recmask(snd_mixer_oss_file_t *fmixer) |
| 161 | { |
| 162 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 163 | int result = 0; |
| 164 | |
| 165 | if (mixer == NULL) |
| 166 | return -EIO; |
| 167 | if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ |
| 168 | result = mixer->mask_recsrc; |
| 169 | } else { |
| 170 | snd_mixer_oss_slot_t *pslot; |
| 171 | int chn; |
| 172 | for (chn = 0; chn < 31; chn++) { |
| 173 | pslot = &mixer->slots[chn]; |
| 174 | if (pslot->put_recsrc) |
| 175 | result |= 1 << chn; |
| 176 | } |
| 177 | } |
| 178 | return result; |
| 179 | } |
| 180 | |
| 181 | static int snd_mixer_oss_get_recsrc(snd_mixer_oss_file_t *fmixer) |
| 182 | { |
| 183 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 184 | int result = 0; |
| 185 | |
| 186 | if (mixer == NULL) |
| 187 | return -EIO; |
| 188 | if (mixer->put_recsrc && mixer->get_recsrc) { /* exclusive */ |
| 189 | int err; |
| 190 | if ((err = mixer->get_recsrc(fmixer, &result)) < 0) |
| 191 | return err; |
| 192 | result = 1 << result; |
| 193 | } else { |
| 194 | snd_mixer_oss_slot_t *pslot; |
| 195 | int chn; |
| 196 | for (chn = 0; chn < 31; chn++) { |
| 197 | pslot = &mixer->slots[chn]; |
| 198 | if (pslot->get_recsrc) { |
| 199 | int active = 0; |
| 200 | pslot->get_recsrc(fmixer, pslot, &active); |
| 201 | if (active) |
| 202 | result |= 1 << chn; |
| 203 | } |
| 204 | } |
| 205 | } |
| 206 | return mixer->oss_recsrc = result; |
| 207 | } |
| 208 | |
| 209 | static int snd_mixer_oss_set_recsrc(snd_mixer_oss_file_t *fmixer, int recsrc) |
| 210 | { |
| 211 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 212 | snd_mixer_oss_slot_t *pslot; |
| 213 | int chn, active; |
| 214 | int result = 0; |
| 215 | |
| 216 | if (mixer == NULL) |
| 217 | return -EIO; |
| 218 | if (mixer->get_recsrc && mixer->put_recsrc) { /* exclusive input */ |
| 219 | if (recsrc & ~mixer->oss_recsrc) |
| 220 | recsrc &= ~mixer->oss_recsrc; |
| 221 | mixer->put_recsrc(fmixer, ffz(~recsrc)); |
| 222 | mixer->get_recsrc(fmixer, &result); |
| 223 | result = 1 << result; |
| 224 | } |
| 225 | for (chn = 0; chn < 31; chn++) { |
| 226 | pslot = &mixer->slots[chn]; |
| 227 | if (pslot->put_recsrc) { |
| 228 | active = (recsrc & (1 << chn)) ? 1 : 0; |
| 229 | pslot->put_recsrc(fmixer, pslot, active); |
| 230 | } |
| 231 | } |
| 232 | if (! result) { |
| 233 | for (chn = 0; chn < 31; chn++) { |
| 234 | pslot = &mixer->slots[chn]; |
| 235 | if (pslot->get_recsrc) { |
| 236 | active = 0; |
| 237 | pslot->get_recsrc(fmixer, pslot, &active); |
| 238 | if (active) |
| 239 | result |= 1 << chn; |
| 240 | } |
| 241 | } |
| 242 | } |
| 243 | return result; |
| 244 | } |
| 245 | |
| 246 | static int snd_mixer_oss_get_volume(snd_mixer_oss_file_t *fmixer, int slot) |
| 247 | { |
| 248 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 249 | snd_mixer_oss_slot_t *pslot; |
| 250 | int result = 0, left, right; |
| 251 | |
| 252 | if (mixer == NULL || slot > 30) |
| 253 | return -EIO; |
| 254 | pslot = &mixer->slots[slot]; |
| 255 | left = pslot->volume[0]; |
| 256 | right = pslot->volume[1]; |
| 257 | if (pslot->get_volume) |
| 258 | result = pslot->get_volume(fmixer, pslot, &left, &right); |
| 259 | if (!pslot->stereo) |
| 260 | right = left; |
| 261 | snd_assert(left >= 0 && left <= 100, return -EIO); |
| 262 | snd_assert(right >= 0 && right <= 100, return -EIO); |
| 263 | if (result >= 0) { |
| 264 | pslot->volume[0] = left; |
| 265 | pslot->volume[1] = right; |
| 266 | result = (left & 0xff) | ((right & 0xff) << 8); |
| 267 | } |
| 268 | return result; |
| 269 | } |
| 270 | |
| 271 | static int snd_mixer_oss_set_volume(snd_mixer_oss_file_t *fmixer, |
| 272 | int slot, int volume) |
| 273 | { |
| 274 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 275 | snd_mixer_oss_slot_t *pslot; |
| 276 | int result = 0, left = volume & 0xff, right = (volume >> 8) & 0xff; |
| 277 | |
| 278 | if (mixer == NULL || slot > 30) |
| 279 | return -EIO; |
| 280 | pslot = &mixer->slots[slot]; |
| 281 | if (left > 100) |
| 282 | left = 100; |
| 283 | if (right > 100) |
| 284 | right = 100; |
| 285 | if (!pslot->stereo) |
| 286 | right = left; |
| 287 | if (pslot->put_volume) |
| 288 | result = pslot->put_volume(fmixer, pslot, left, right); |
| 289 | if (result < 0) |
| 290 | return result; |
| 291 | pslot->volume[0] = left; |
| 292 | pslot->volume[1] = right; |
| 293 | return (left & 0xff) | ((right & 0xff) << 8); |
| 294 | } |
| 295 | |
| 296 | static int snd_mixer_oss_ioctl1(snd_mixer_oss_file_t *fmixer, unsigned int cmd, unsigned long arg) |
| 297 | { |
| 298 | void __user *argp = (void __user *)arg; |
| 299 | int __user *p = argp; |
| 300 | int tmp; |
| 301 | |
| 302 | snd_assert(fmixer != NULL, return -ENXIO); |
| 303 | if (((cmd >> 8) & 0xff) == 'M') { |
| 304 | switch (cmd) { |
| 305 | case SOUND_MIXER_INFO: |
| 306 | return snd_mixer_oss_info(fmixer, argp); |
| 307 | case SOUND_OLD_MIXER_INFO: |
| 308 | return snd_mixer_oss_info_obsolete(fmixer, argp); |
| 309 | case SOUND_MIXER_WRITE_RECSRC: |
| 310 | if (get_user(tmp, p)) |
| 311 | return -EFAULT; |
| 312 | tmp = snd_mixer_oss_set_recsrc(fmixer, tmp); |
| 313 | if (tmp < 0) |
| 314 | return tmp; |
| 315 | return put_user(tmp, p); |
| 316 | case OSS_GETVERSION: |
| 317 | return put_user(SNDRV_OSS_VERSION, p); |
| 318 | case OSS_ALSAEMULVER: |
| 319 | return put_user(1, p); |
| 320 | case SOUND_MIXER_READ_DEVMASK: |
| 321 | tmp = snd_mixer_oss_devmask(fmixer); |
| 322 | if (tmp < 0) |
| 323 | return tmp; |
| 324 | return put_user(tmp, p); |
| 325 | case SOUND_MIXER_READ_STEREODEVS: |
| 326 | tmp = snd_mixer_oss_stereodevs(fmixer); |
| 327 | if (tmp < 0) |
| 328 | return tmp; |
| 329 | return put_user(tmp, p); |
| 330 | case SOUND_MIXER_READ_RECMASK: |
| 331 | tmp = snd_mixer_oss_recmask(fmixer); |
| 332 | if (tmp < 0) |
| 333 | return tmp; |
| 334 | return put_user(tmp, p); |
| 335 | case SOUND_MIXER_READ_CAPS: |
| 336 | tmp = snd_mixer_oss_caps(fmixer); |
| 337 | if (tmp < 0) |
| 338 | return tmp; |
| 339 | return put_user(tmp, p); |
| 340 | case SOUND_MIXER_READ_RECSRC: |
| 341 | tmp = snd_mixer_oss_get_recsrc(fmixer); |
| 342 | if (tmp < 0) |
| 343 | return tmp; |
| 344 | return put_user(tmp, p); |
| 345 | } |
| 346 | } |
| 347 | if (cmd & SIOC_IN) { |
| 348 | if (get_user(tmp, p)) |
| 349 | return -EFAULT; |
| 350 | tmp = snd_mixer_oss_set_volume(fmixer, cmd & 0xff, tmp); |
| 351 | if (tmp < 0) |
| 352 | return tmp; |
| 353 | return put_user(tmp, p); |
| 354 | } else if (cmd & SIOC_OUT) { |
| 355 | tmp = snd_mixer_oss_get_volume(fmixer, cmd & 0xff); |
| 356 | if (tmp < 0) |
| 357 | return tmp; |
| 358 | return put_user(tmp, p); |
| 359 | } |
| 360 | return -ENXIO; |
| 361 | } |
| 362 | |
| 363 | static long snd_mixer_oss_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
| 364 | { |
| 365 | return snd_mixer_oss_ioctl1((snd_mixer_oss_file_t *) file->private_data, cmd, arg); |
| 366 | } |
| 367 | |
| 368 | int snd_mixer_oss_ioctl_card(snd_card_t *card, unsigned int cmd, unsigned long arg) |
| 369 | { |
| 370 | snd_mixer_oss_file_t fmixer; |
| 371 | |
| 372 | snd_assert(card != NULL, return -ENXIO); |
| 373 | if (card->mixer_oss == NULL) |
| 374 | return -ENXIO; |
| 375 | memset(&fmixer, 0, sizeof(fmixer)); |
| 376 | fmixer.card = card; |
| 377 | fmixer.mixer = card->mixer_oss; |
| 378 | return snd_mixer_oss_ioctl1(&fmixer, cmd, arg); |
| 379 | } |
| 380 | |
| 381 | #ifdef CONFIG_COMPAT |
| 382 | /* all compatible */ |
| 383 | #define snd_mixer_oss_ioctl_compat snd_mixer_oss_ioctl |
| 384 | #else |
| 385 | #define snd_mixer_oss_ioctl_compat NULL |
| 386 | #endif |
| 387 | |
| 388 | /* |
| 389 | * REGISTRATION PART |
| 390 | */ |
| 391 | |
| 392 | static struct file_operations snd_mixer_oss_f_ops = |
| 393 | { |
| 394 | .owner = THIS_MODULE, |
| 395 | .open = snd_mixer_oss_open, |
| 396 | .release = snd_mixer_oss_release, |
| 397 | .unlocked_ioctl = snd_mixer_oss_ioctl, |
| 398 | .compat_ioctl = snd_mixer_oss_ioctl_compat, |
| 399 | }; |
| 400 | |
| 401 | static snd_minor_t snd_mixer_oss_reg = |
| 402 | { |
| 403 | .comment = "mixer", |
| 404 | .f_ops = &snd_mixer_oss_f_ops, |
| 405 | }; |
| 406 | |
| 407 | /* |
| 408 | * utilities |
| 409 | */ |
| 410 | |
| 411 | static long snd_mixer_oss_conv(long val, long omin, long omax, long nmin, long nmax) |
| 412 | { |
| 413 | long orange = omax - omin, nrange = nmax - nmin; |
| 414 | |
| 415 | if (orange == 0) |
| 416 | return 0; |
| 417 | return ((nrange * (val - omin)) + (orange / 2)) / orange + nmin; |
| 418 | } |
| 419 | |
| 420 | /* convert from alsa native to oss values (0-100) */ |
| 421 | static long snd_mixer_oss_conv1(long val, long min, long max, int *old) |
| 422 | { |
| 423 | if (val == snd_mixer_oss_conv(*old, 0, 100, min, max)) |
| 424 | return *old; |
| 425 | return snd_mixer_oss_conv(val, min, max, 0, 100); |
| 426 | } |
| 427 | |
| 428 | /* convert from oss to alsa native values */ |
| 429 | static long snd_mixer_oss_conv2(long val, long min, long max) |
| 430 | { |
| 431 | return snd_mixer_oss_conv(val, 0, 100, min, max); |
| 432 | } |
| 433 | |
| 434 | #if 0 |
| 435 | static void snd_mixer_oss_recsrce_set(snd_card_t *card, int slot) |
| 436 | { |
| 437 | snd_mixer_oss_t *mixer = card->mixer_oss; |
| 438 | if (mixer) |
| 439 | mixer->mask_recsrc |= 1 << slot; |
| 440 | } |
| 441 | |
| 442 | static int snd_mixer_oss_recsrce_get(snd_card_t *card, int slot) |
| 443 | { |
| 444 | snd_mixer_oss_t *mixer = card->mixer_oss; |
| 445 | if (mixer && (mixer->mask_recsrc & (1 << slot))) |
| 446 | return 1; |
| 447 | return 0; |
| 448 | } |
| 449 | #endif |
| 450 | |
| 451 | #define SNDRV_MIXER_OSS_SIGNATURE 0x65999250 |
| 452 | |
| 453 | #define SNDRV_MIXER_OSS_ITEM_GLOBAL 0 |
| 454 | #define SNDRV_MIXER_OSS_ITEM_GSWITCH 1 |
| 455 | #define SNDRV_MIXER_OSS_ITEM_GROUTE 2 |
| 456 | #define SNDRV_MIXER_OSS_ITEM_GVOLUME 3 |
| 457 | #define SNDRV_MIXER_OSS_ITEM_PSWITCH 4 |
| 458 | #define SNDRV_MIXER_OSS_ITEM_PROUTE 5 |
| 459 | #define SNDRV_MIXER_OSS_ITEM_PVOLUME 6 |
| 460 | #define SNDRV_MIXER_OSS_ITEM_CSWITCH 7 |
| 461 | #define SNDRV_MIXER_OSS_ITEM_CROUTE 8 |
| 462 | #define SNDRV_MIXER_OSS_ITEM_CVOLUME 9 |
| 463 | #define SNDRV_MIXER_OSS_ITEM_CAPTURE 10 |
| 464 | |
| 465 | #define SNDRV_MIXER_OSS_ITEM_COUNT 11 |
| 466 | |
| 467 | #define SNDRV_MIXER_OSS_PRESENT_GLOBAL (1<<0) |
| 468 | #define SNDRV_MIXER_OSS_PRESENT_GSWITCH (1<<1) |
| 469 | #define SNDRV_MIXER_OSS_PRESENT_GROUTE (1<<2) |
| 470 | #define SNDRV_MIXER_OSS_PRESENT_GVOLUME (1<<3) |
| 471 | #define SNDRV_MIXER_OSS_PRESENT_PSWITCH (1<<4) |
| 472 | #define SNDRV_MIXER_OSS_PRESENT_PROUTE (1<<5) |
| 473 | #define SNDRV_MIXER_OSS_PRESENT_PVOLUME (1<<6) |
| 474 | #define SNDRV_MIXER_OSS_PRESENT_CSWITCH (1<<7) |
| 475 | #define SNDRV_MIXER_OSS_PRESENT_CROUTE (1<<8) |
| 476 | #define SNDRV_MIXER_OSS_PRESENT_CVOLUME (1<<9) |
| 477 | #define SNDRV_MIXER_OSS_PRESENT_CAPTURE (1<<10) |
| 478 | |
| 479 | struct slot { |
| 480 | unsigned int signature; |
| 481 | unsigned int present; |
| 482 | unsigned int channels; |
| 483 | unsigned int numid[SNDRV_MIXER_OSS_ITEM_COUNT]; |
| 484 | unsigned int capture_item; |
| 485 | struct snd_mixer_oss_assign_table *assigned; |
| 486 | unsigned int allocated: 1; |
| 487 | }; |
| 488 | |
| 489 | #define ID_UNKNOWN ((unsigned int)-1) |
| 490 | |
| 491 | static snd_kcontrol_t *snd_mixer_oss_test_id(snd_mixer_oss_t *mixer, const char *name, int index) |
| 492 | { |
| 493 | snd_card_t * card = mixer->card; |
| 494 | snd_ctl_elem_id_t id; |
| 495 | |
| 496 | memset(&id, 0, sizeof(id)); |
| 497 | id.iface = SNDRV_CTL_ELEM_IFACE_MIXER; |
| 498 | strcpy(id.name, name); |
| 499 | id.index = index; |
| 500 | return snd_ctl_find_id(card, &id); |
| 501 | } |
| 502 | |
| 503 | static void snd_mixer_oss_get_volume1_vol(snd_mixer_oss_file_t *fmixer, |
| 504 | snd_mixer_oss_slot_t *pslot, |
| 505 | unsigned int numid, |
| 506 | int *left, int *right) |
| 507 | { |
| 508 | snd_ctl_elem_info_t *uinfo; |
| 509 | snd_ctl_elem_value_t *uctl; |
| 510 | snd_kcontrol_t *kctl; |
| 511 | snd_card_t *card = fmixer->card; |
| 512 | |
| 513 | if (numid == ID_UNKNOWN) |
| 514 | return; |
| 515 | down_read(&card->controls_rwsem); |
| 516 | if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { |
| 517 | up_read(&card->controls_rwsem); |
| 518 | return; |
| 519 | } |
| 520 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 521 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 522 | if (uinfo == NULL || uctl == NULL) |
| 523 | goto __unalloc; |
| 524 | snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); |
| 525 | snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc); |
| 526 | snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc); |
| 527 | *left = snd_mixer_oss_conv1(uctl->value.integer.value[0], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[0]); |
| 528 | if (uinfo->count > 1) |
| 529 | *right = snd_mixer_oss_conv1(uctl->value.integer.value[1], uinfo->value.integer.min, uinfo->value.integer.max, &pslot->volume[1]); |
| 530 | __unalloc: |
| 531 | up_read(&card->controls_rwsem); |
| 532 | kfree(uctl); |
| 533 | kfree(uinfo); |
| 534 | } |
| 535 | |
| 536 | static void snd_mixer_oss_get_volume1_sw(snd_mixer_oss_file_t *fmixer, |
| 537 | snd_mixer_oss_slot_t *pslot, |
| 538 | unsigned int numid, |
| 539 | int *left, int *right, |
| 540 | int route) |
| 541 | { |
| 542 | snd_ctl_elem_info_t *uinfo; |
| 543 | snd_ctl_elem_value_t *uctl; |
| 544 | snd_kcontrol_t *kctl; |
| 545 | snd_card_t *card = fmixer->card; |
| 546 | |
| 547 | if (numid == ID_UNKNOWN) |
| 548 | return; |
| 549 | down_read(&card->controls_rwsem); |
| 550 | if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { |
| 551 | up_read(&card->controls_rwsem); |
| 552 | return; |
| 553 | } |
| 554 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 555 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 556 | if (uinfo == NULL || uctl == NULL) |
| 557 | goto __unalloc; |
| 558 | snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); |
| 559 | snd_runtime_check(!kctl->get(kctl, uctl), goto __unalloc); |
| 560 | if (!uctl->value.integer.value[0]) { |
| 561 | *left = 0; |
| 562 | if (uinfo->count == 1) |
| 563 | *right = 0; |
| 564 | } |
| 565 | if (uinfo->count > 1 && !uctl->value.integer.value[route ? 3 : 1]) |
| 566 | *right = 0; |
| 567 | __unalloc: |
| 568 | up_read(&card->controls_rwsem); |
| 569 | kfree(uctl); |
| 570 | kfree(uinfo); |
| 571 | } |
| 572 | |
| 573 | static int snd_mixer_oss_get_volume1(snd_mixer_oss_file_t *fmixer, |
| 574 | snd_mixer_oss_slot_t *pslot, |
| 575 | int *left, int *right) |
| 576 | { |
| 577 | struct slot *slot = (struct slot *)pslot->private_data; |
| 578 | |
| 579 | *left = *right = 100; |
| 580 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { |
| 581 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); |
| 582 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { |
| 583 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); |
| 584 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { |
| 585 | snd_mixer_oss_get_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); |
| 586 | } |
| 587 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) { |
| 588 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); |
| 589 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) { |
| 590 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); |
| 591 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) { |
| 592 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); |
| 593 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) { |
| 594 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); |
| 595 | } |
| 596 | return 0; |
| 597 | } |
| 598 | |
| 599 | static void snd_mixer_oss_put_volume1_vol(snd_mixer_oss_file_t *fmixer, |
| 600 | snd_mixer_oss_slot_t *pslot, |
| 601 | unsigned int numid, |
| 602 | int left, int right) |
| 603 | { |
| 604 | snd_ctl_elem_info_t *uinfo; |
| 605 | snd_ctl_elem_value_t *uctl; |
| 606 | snd_kcontrol_t *kctl; |
| 607 | snd_card_t *card = fmixer->card; |
| 608 | int res; |
| 609 | |
| 610 | if (numid == ID_UNKNOWN) |
| 611 | return; |
| 612 | down_read(&card->controls_rwsem); |
| 613 | if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) |
| 614 | return; |
| 615 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 616 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 617 | if (uinfo == NULL || uctl == NULL) |
| 618 | goto __unalloc; |
| 619 | snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); |
| 620 | snd_runtime_check(uinfo->type != SNDRV_CTL_ELEM_TYPE_BOOLEAN || uinfo->value.integer.min != 0 || uinfo->value.integer.max != 1, goto __unalloc); |
| 621 | uctl->value.integer.value[0] = snd_mixer_oss_conv2(left, uinfo->value.integer.min, uinfo->value.integer.max); |
| 622 | if (uinfo->count > 1) |
| 623 | uctl->value.integer.value[1] = snd_mixer_oss_conv2(right, uinfo->value.integer.min, uinfo->value.integer.max); |
| 624 | snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc); |
| 625 | if (res > 0) |
| 626 | snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); |
| 627 | __unalloc: |
| 628 | up_read(&card->controls_rwsem); |
| 629 | kfree(uctl); |
| 630 | kfree(uinfo); |
| 631 | } |
| 632 | |
| 633 | static void snd_mixer_oss_put_volume1_sw(snd_mixer_oss_file_t *fmixer, |
| 634 | snd_mixer_oss_slot_t *pslot, |
| 635 | unsigned int numid, |
| 636 | int left, int right, |
| 637 | int route) |
| 638 | { |
| 639 | snd_ctl_elem_info_t *uinfo; |
| 640 | snd_ctl_elem_value_t *uctl; |
| 641 | snd_kcontrol_t *kctl; |
| 642 | snd_card_t *card = fmixer->card; |
| 643 | int res; |
| 644 | |
| 645 | if (numid == ID_UNKNOWN) |
| 646 | return; |
| 647 | down_read(&card->controls_rwsem); |
| 648 | if ((kctl = snd_ctl_find_numid(card, numid)) == NULL) { |
| 649 | up_read(&fmixer->card->controls_rwsem); |
| 650 | return; |
| 651 | } |
| 652 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 653 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 654 | if (uinfo == NULL || uctl == NULL) |
| 655 | goto __unalloc; |
| 656 | snd_runtime_check(!kctl->info(kctl, uinfo), goto __unalloc); |
| 657 | if (uinfo->count > 1) { |
| 658 | uctl->value.integer.value[0] = left > 0 ? 1 : 0; |
| 659 | uctl->value.integer.value[route ? 3 : 1] = right > 0 ? 1 : 0; |
| 660 | if (route) { |
| 661 | uctl->value.integer.value[1] = |
| 662 | uctl->value.integer.value[2] = 0; |
| 663 | } |
| 664 | } else { |
| 665 | uctl->value.integer.value[0] = (left > 0 || right > 0) ? 1 : 0; |
| 666 | } |
| 667 | snd_runtime_check((res = kctl->put(kctl, uctl)) >= 0, goto __unalloc); |
| 668 | if (res > 0) |
| 669 | snd_ctl_notify(card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); |
| 670 | __unalloc: |
| 671 | up_read(&card->controls_rwsem); |
| 672 | kfree(uctl); |
| 673 | kfree(uinfo); |
| 674 | } |
| 675 | |
| 676 | static int snd_mixer_oss_put_volume1(snd_mixer_oss_file_t *fmixer, |
| 677 | snd_mixer_oss_slot_t *pslot, |
| 678 | int left, int right) |
| 679 | { |
| 680 | struct slot *slot = (struct slot *)pslot->private_data; |
| 681 | |
| 682 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PVOLUME) { |
| 683 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PVOLUME], left, right); |
| 684 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_CVOLUME) |
| 685 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CVOLUME], left, right); |
| 686 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GVOLUME) { |
| 687 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GVOLUME], left, right); |
| 688 | } else if (slot->present & SNDRV_MIXER_OSS_PRESENT_GLOBAL) { |
| 689 | snd_mixer_oss_put_volume1_vol(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GLOBAL], left, right); |
| 690 | } |
| 691 | if (left || right) { |
| 692 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PSWITCH) |
| 693 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PSWITCH], left, right, 0); |
| 694 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_GSWITCH) |
| 695 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GSWITCH], left, right, 0); |
| 696 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_PROUTE) |
| 697 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_PROUTE], left, right, 1); |
| 698 | if (slot->present & SNDRV_MIXER_OSS_PRESENT_GROUTE) |
| 699 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_GROUTE], left, right, 1); |
| 700 | } else { |
| 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 | } else 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 | } else 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 | } else 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 | } |
| 710 | } |
| 711 | return 0; |
| 712 | } |
| 713 | |
| 714 | static int snd_mixer_oss_get_recsrc1_sw(snd_mixer_oss_file_t *fmixer, |
| 715 | snd_mixer_oss_slot_t *pslot, |
| 716 | int *active) |
| 717 | { |
| 718 | struct slot *slot = (struct slot *)pslot->private_data; |
| 719 | int left, right; |
| 720 | |
| 721 | left = right = 1; |
| 722 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], &left, &right, 0); |
| 723 | *active = (left || right) ? 1 : 0; |
| 724 | return 0; |
| 725 | } |
| 726 | |
| 727 | static int snd_mixer_oss_get_recsrc1_route(snd_mixer_oss_file_t *fmixer, |
| 728 | snd_mixer_oss_slot_t *pslot, |
| 729 | int *active) |
| 730 | { |
| 731 | struct slot *slot = (struct slot *)pslot->private_data; |
| 732 | int left, right; |
| 733 | |
| 734 | left = right = 1; |
| 735 | snd_mixer_oss_get_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], &left, &right, 1); |
| 736 | *active = (left || right) ? 1 : 0; |
| 737 | return 0; |
| 738 | } |
| 739 | |
| 740 | static int snd_mixer_oss_put_recsrc1_sw(snd_mixer_oss_file_t *fmixer, |
| 741 | snd_mixer_oss_slot_t *pslot, |
| 742 | int active) |
| 743 | { |
| 744 | struct slot *slot = (struct slot *)pslot->private_data; |
| 745 | |
| 746 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CSWITCH], active, active, 0); |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | static int snd_mixer_oss_put_recsrc1_route(snd_mixer_oss_file_t *fmixer, |
| 751 | snd_mixer_oss_slot_t *pslot, |
| 752 | int active) |
| 753 | { |
| 754 | struct slot *slot = (struct slot *)pslot->private_data; |
| 755 | |
| 756 | snd_mixer_oss_put_volume1_sw(fmixer, pslot, slot->numid[SNDRV_MIXER_OSS_ITEM_CROUTE], active, active, 1); |
| 757 | return 0; |
| 758 | } |
| 759 | |
| 760 | static int snd_mixer_oss_get_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int *active_index) |
| 761 | { |
| 762 | snd_card_t *card = fmixer->card; |
| 763 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 764 | snd_kcontrol_t *kctl; |
| 765 | snd_mixer_oss_slot_t *pslot; |
| 766 | struct slot *slot; |
| 767 | snd_ctl_elem_info_t *uinfo; |
| 768 | snd_ctl_elem_value_t *uctl; |
| 769 | int err, idx; |
| 770 | |
| 771 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 772 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 773 | if (uinfo == NULL || uctl == NULL) { |
| 774 | err = -ENOMEM; |
| 775 | goto __unlock; |
| 776 | } |
| 777 | down_read(&card->controls_rwsem); |
| 778 | kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); |
| 779 | snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock); |
| 780 | snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock); |
| 781 | snd_runtime_check(!(err = kctl->get(kctl, uctl)), goto __unlock); |
| 782 | for (idx = 0; idx < 32; idx++) { |
| 783 | if (!(mixer->mask_recsrc & (1 << idx))) |
| 784 | continue; |
| 785 | pslot = &mixer->slots[idx]; |
| 786 | slot = (struct slot *)pslot->private_data; |
| 787 | if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) |
| 788 | continue; |
| 789 | if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) |
| 790 | continue; |
| 791 | if (slot->capture_item == uctl->value.enumerated.item[0]) { |
| 792 | *active_index = idx; |
| 793 | break; |
| 794 | } |
| 795 | } |
| 796 | err = 0; |
| 797 | __unlock: |
| 798 | up_read(&card->controls_rwsem); |
| 799 | kfree(uctl); |
| 800 | kfree(uinfo); |
| 801 | return err; |
| 802 | } |
| 803 | |
| 804 | static int snd_mixer_oss_put_recsrc2(snd_mixer_oss_file_t *fmixer, unsigned int active_index) |
| 805 | { |
| 806 | snd_card_t *card = fmixer->card; |
| 807 | snd_mixer_oss_t *mixer = fmixer->mixer; |
| 808 | snd_kcontrol_t *kctl; |
| 809 | snd_mixer_oss_slot_t *pslot; |
| 810 | struct slot *slot = NULL; |
| 811 | snd_ctl_elem_info_t *uinfo; |
| 812 | snd_ctl_elem_value_t *uctl; |
| 813 | int err; |
| 814 | unsigned int idx; |
| 815 | |
| 816 | uinfo = kcalloc(1, sizeof(*uinfo), GFP_KERNEL); |
| 817 | uctl = kcalloc(1, sizeof(*uctl), GFP_KERNEL); |
| 818 | if (uinfo == NULL || uctl == NULL) { |
| 819 | err = -ENOMEM; |
| 820 | goto __unlock; |
| 821 | } |
| 822 | down_read(&card->controls_rwsem); |
| 823 | kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0); |
| 824 | snd_runtime_check(kctl != NULL, err = -ENOENT; goto __unlock); |
| 825 | snd_runtime_check(!(err = kctl->info(kctl, uinfo)), goto __unlock); |
| 826 | for (idx = 0; idx < 32; idx++) { |
| 827 | if (!(mixer->mask_recsrc & (1 << idx))) |
| 828 | continue; |
| 829 | pslot = &mixer->slots[idx]; |
| 830 | slot = (struct slot *)pslot->private_data; |
| 831 | if (slot->signature != SNDRV_MIXER_OSS_SIGNATURE) |
| 832 | continue; |
| 833 | if (!(slot->present & SNDRV_MIXER_OSS_PRESENT_CAPTURE)) |
| 834 | continue; |
| 835 | if (idx == active_index) |
| 836 | break; |
| 837 | slot = NULL; |
| 838 | } |
| 839 | snd_runtime_check(slot != NULL, goto __unlock); |
| 840 | for (idx = 0; idx < uinfo->count; idx++) |
| 841 | uctl->value.enumerated.item[idx] = slot->capture_item; |
| 842 | snd_runtime_check((err = kctl->put(kctl, uctl)) >= 0, ); |
| 843 | if (err > 0) |
| 844 | snd_ctl_notify(fmixer->card, SNDRV_CTL_EVENT_MASK_VALUE, &kctl->id); |
| 845 | err = 0; |
| 846 | __unlock: |
| 847 | up_read(&card->controls_rwsem); |
| 848 | kfree(uctl); |
| 849 | kfree(uinfo); |
| 850 | return err; |
| 851 | } |
| 852 | |
| 853 | struct snd_mixer_oss_assign_table { |
| 854 | int oss_id; |
| 855 | const char *name; |
| 856 | int index; |
| 857 | }; |
| 858 | |
| 859 | static int snd_mixer_oss_build_test(snd_mixer_oss_t *mixer, struct slot *slot, const char *name, int index, int item) |
| 860 | { |
| 861 | snd_ctl_elem_info_t *info; |
| 862 | snd_kcontrol_t *kcontrol; |
| 863 | snd_card_t *card = mixer->card; |
| 864 | int err; |
| 865 | |
| 866 | down_read(&card->controls_rwsem); |
| 867 | kcontrol = snd_mixer_oss_test_id(mixer, name, index); |
| 868 | if (kcontrol == NULL) { |
| 869 | up_read(&card->controls_rwsem); |
| 870 | return 0; |
| 871 | } |
| 872 | info = kmalloc(sizeof(*info), GFP_KERNEL); |
| 873 | if (! info) { |
| 874 | up_read(&card->controls_rwsem); |
| 875 | return -ENOMEM; |
| 876 | } |
| 877 | if ((err = kcontrol->info(kcontrol, info)) < 0) { |
| 878 | up_read(&card->controls_rwsem); |
| 879 | kfree(info); |
| 880 | return err; |
| 881 | } |
| 882 | slot->numid[item] = kcontrol->id.numid; |
| 883 | up_read(&card->controls_rwsem); |
| 884 | if (info->count > slot->channels) |
| 885 | slot->channels = info->count; |
| 886 | slot->present |= 1 << item; |
| 887 | kfree(info); |
| 888 | return 0; |
| 889 | } |
| 890 | |
| 891 | static void snd_mixer_oss_slot_free(snd_mixer_oss_slot_t *chn) |
| 892 | { |
| 893 | struct slot *p = (struct slot *)chn->private_data; |
| 894 | if (p) { |
| 895 | if (p->allocated && p->assigned) { |
| 896 | kfree(p->assigned->name); |
| 897 | kfree(p->assigned); |
| 898 | } |
| 899 | kfree(p); |
| 900 | } |
| 901 | } |
| 902 | |
| 903 | static void mixer_slot_clear(snd_mixer_oss_slot_t *rslot) |
| 904 | { |
| 905 | int idx = rslot->number; /* remember this */ |
| 906 | if (rslot->private_free) |
| 907 | rslot->private_free(rslot); |
| 908 | memset(rslot, 0, sizeof(*rslot)); |
| 909 | rslot->number = idx; |
| 910 | } |
| 911 | |
| 912 | /* |
| 913 | * build an OSS mixer element. |
| 914 | * ptr_allocated means the entry is dynamically allocated (change via proc file). |
| 915 | * when replace_old = 1, the old entry is replaced with the new one. |
| 916 | */ |
| 917 | static int snd_mixer_oss_build_input(snd_mixer_oss_t *mixer, struct snd_mixer_oss_assign_table *ptr, int ptr_allocated, int replace_old) |
| 918 | { |
| 919 | struct slot slot; |
| 920 | struct slot *pslot; |
| 921 | snd_kcontrol_t *kctl; |
| 922 | snd_mixer_oss_slot_t *rslot; |
| 923 | char str[64]; |
| 924 | |
| 925 | /* check if already assigned */ |
| 926 | if (mixer->slots[ptr->oss_id].get_volume && ! replace_old) |
| 927 | return 0; |
| 928 | |
| 929 | memset(&slot, 0, sizeof(slot)); |
| 930 | memset(slot.numid, 0xff, sizeof(slot.numid)); /* ID_UNKNOWN */ |
| 931 | if (snd_mixer_oss_build_test(mixer, &slot, ptr->name, ptr->index, |
| 932 | SNDRV_MIXER_OSS_ITEM_GLOBAL)) |
| 933 | return 0; |
| 934 | sprintf(str, "%s Switch", ptr->name); |
| 935 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 936 | SNDRV_MIXER_OSS_ITEM_GSWITCH)) |
| 937 | return 0; |
| 938 | sprintf(str, "%s Route", ptr->name); |
| 939 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 940 | SNDRV_MIXER_OSS_ITEM_GROUTE)) |
| 941 | return 0; |
| 942 | sprintf(str, "%s Volume", ptr->name); |
| 943 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 944 | SNDRV_MIXER_OSS_ITEM_GVOLUME)) |
| 945 | return 0; |
| 946 | sprintf(str, "%s Playback Switch", ptr->name); |
| 947 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 948 | SNDRV_MIXER_OSS_ITEM_PSWITCH)) |
| 949 | return 0; |
| 950 | sprintf(str, "%s Playback Route", ptr->name); |
| 951 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 952 | SNDRV_MIXER_OSS_ITEM_PROUTE)) |
| 953 | return 0; |
| 954 | sprintf(str, "%s Playback Volume", ptr->name); |
| 955 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 956 | SNDRV_MIXER_OSS_ITEM_PVOLUME)) |
| 957 | return 0; |
| 958 | sprintf(str, "%s Capture Switch", ptr->name); |
| 959 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 960 | SNDRV_MIXER_OSS_ITEM_CSWITCH)) |
| 961 | return 0; |
| 962 | sprintf(str, "%s Capture Route", ptr->name); |
| 963 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 964 | SNDRV_MIXER_OSS_ITEM_CROUTE)) |
| 965 | return 0; |
| 966 | sprintf(str, "%s Capture Volume", ptr->name); |
| 967 | if (snd_mixer_oss_build_test(mixer, &slot, str, ptr->index, |
| 968 | SNDRV_MIXER_OSS_ITEM_CVOLUME)) |
| 969 | return 0; |
| 970 | down_read(&mixer->card->controls_rwsem); |
| 971 | if (ptr->index == 0 && (kctl = snd_mixer_oss_test_id(mixer, "Capture Source", 0)) != NULL) { |
| 972 | snd_ctl_elem_info_t *uinfo; |
| 973 | |
| 974 | uinfo = kmalloc(sizeof(*uinfo), GFP_KERNEL); |
| 975 | if (! uinfo) { |
| 976 | up_read(&mixer->card->controls_rwsem); |
| 977 | return -ENOMEM; |
| 978 | } |
| 979 | |
| 980 | memset(uinfo, 0, sizeof(*uinfo)); |
| 981 | if (kctl->info(kctl, uinfo)) { |
| 982 | up_read(&mixer->card->controls_rwsem); |
| 983 | return 0; |
| 984 | } |
| 985 | strcpy(str, ptr->name); |
| 986 | if (!strcmp(str, "Master")) |
| 987 | strcpy(str, "Mix"); |
| 988 | if (!strcmp(str, "Master Mono")) |
| 989 | strcpy(str, "Mix Mono"); |
| 990 | slot.capture_item = 0; |
| 991 | if (!strcmp(uinfo->value.enumerated.name, str)) { |
| 992 | slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; |
| 993 | } else { |
| 994 | for (slot.capture_item = 1; slot.capture_item < uinfo->value.enumerated.items; slot.capture_item++) { |
| 995 | uinfo->value.enumerated.item = slot.capture_item; |
| 996 | if (kctl->info(kctl, uinfo)) { |
| 997 | up_read(&mixer->card->controls_rwsem); |
| 998 | return 0; |
| 999 | } |
| 1000 | if (!strcmp(uinfo->value.enumerated.name, str)) { |
| 1001 | slot.present |= SNDRV_MIXER_OSS_PRESENT_CAPTURE; |
| 1002 | break; |
| 1003 | } |
| 1004 | } |
| 1005 | } |
| 1006 | kfree(uinfo); |
| 1007 | } |
| 1008 | up_read(&mixer->card->controls_rwsem); |
| 1009 | if (slot.present != 0) { |
| 1010 | pslot = (struct slot *)kmalloc(sizeof(slot), GFP_KERNEL); |
| 1011 | snd_runtime_check(pslot != NULL, return -ENOMEM); |
| 1012 | *pslot = slot; |
| 1013 | pslot->signature = SNDRV_MIXER_OSS_SIGNATURE; |
| 1014 | pslot->assigned = ptr; |
| 1015 | pslot->allocated = ptr_allocated; |
| 1016 | rslot = &mixer->slots[ptr->oss_id]; |
| 1017 | mixer_slot_clear(rslot); |
| 1018 | rslot->stereo = slot.channels > 1 ? 1 : 0; |
| 1019 | rslot->get_volume = snd_mixer_oss_get_volume1; |
| 1020 | rslot->put_volume = snd_mixer_oss_put_volume1; |
| 1021 | /* note: ES18xx have both Capture Source and XX Capture Volume !!! */ |
| 1022 | if (slot.present & SNDRV_MIXER_OSS_PRESENT_CSWITCH) { |
| 1023 | rslot->get_recsrc = snd_mixer_oss_get_recsrc1_sw; |
| 1024 | rslot->put_recsrc = snd_mixer_oss_put_recsrc1_sw; |
| 1025 | } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CROUTE) { |
| 1026 | rslot->get_recsrc = snd_mixer_oss_get_recsrc1_route; |
| 1027 | rslot->put_recsrc = snd_mixer_oss_put_recsrc1_route; |
| 1028 | } else if (slot.present & SNDRV_MIXER_OSS_PRESENT_CAPTURE) { |
| 1029 | mixer->mask_recsrc |= 1 << ptr->oss_id; |
| 1030 | } |
| 1031 | rslot->private_data = pslot; |
| 1032 | rslot->private_free = snd_mixer_oss_slot_free; |
| 1033 | return 1; |
| 1034 | } |
| 1035 | return 0; |
| 1036 | } |
| 1037 | |
| 1038 | /* |
| 1039 | */ |
| 1040 | #define MIXER_VOL(name) [SOUND_MIXER_##name] = #name |
| 1041 | static char *oss_mixer_names[SNDRV_OSS_MAX_MIXERS] = { |
| 1042 | MIXER_VOL(VOLUME), |
| 1043 | MIXER_VOL(BASS), |
| 1044 | MIXER_VOL(TREBLE), |
| 1045 | MIXER_VOL(SYNTH), |
| 1046 | MIXER_VOL(PCM), |
| 1047 | MIXER_VOL(SPEAKER), |
| 1048 | MIXER_VOL(LINE), |
| 1049 | MIXER_VOL(MIC), |
| 1050 | MIXER_VOL(CD), |
| 1051 | MIXER_VOL(IMIX), |
| 1052 | MIXER_VOL(ALTPCM), |
| 1053 | MIXER_VOL(RECLEV), |
| 1054 | MIXER_VOL(IGAIN), |
| 1055 | MIXER_VOL(OGAIN), |
| 1056 | MIXER_VOL(LINE1), |
| 1057 | MIXER_VOL(LINE2), |
| 1058 | MIXER_VOL(LINE3), |
| 1059 | MIXER_VOL(DIGITAL1), |
| 1060 | MIXER_VOL(DIGITAL2), |
| 1061 | MIXER_VOL(DIGITAL3), |
| 1062 | MIXER_VOL(PHONEIN), |
| 1063 | MIXER_VOL(PHONEOUT), |
| 1064 | MIXER_VOL(VIDEO), |
| 1065 | MIXER_VOL(RADIO), |
| 1066 | MIXER_VOL(MONITOR), |
| 1067 | }; |
| 1068 | |
| 1069 | /* |
| 1070 | * /proc interface |
| 1071 | */ |
| 1072 | |
| 1073 | static void snd_mixer_oss_proc_read(snd_info_entry_t *entry, |
| 1074 | snd_info_buffer_t * buffer) |
| 1075 | { |
| 1076 | snd_mixer_oss_t *mixer = entry->private_data; |
| 1077 | int i; |
| 1078 | |
| 1079 | down(&mixer->reg_mutex); |
| 1080 | for (i = 0; i < SNDRV_OSS_MAX_MIXERS; i++) { |
| 1081 | struct slot *p; |
| 1082 | |
| 1083 | if (! oss_mixer_names[i]) |
| 1084 | continue; |
| 1085 | p = (struct slot *)mixer->slots[i].private_data; |
| 1086 | snd_iprintf(buffer, "%s ", oss_mixer_names[i]); |
| 1087 | if (p && p->assigned) |
| 1088 | snd_iprintf(buffer, "\"%s\" %d\n", |
| 1089 | p->assigned->name, |
| 1090 | p->assigned->index); |
| 1091 | else |
| 1092 | snd_iprintf(buffer, "\"\" 0\n"); |
| 1093 | } |
| 1094 | up(&mixer->reg_mutex); |
| 1095 | } |
| 1096 | |
| 1097 | static void snd_mixer_oss_proc_write(snd_info_entry_t *entry, |
| 1098 | snd_info_buffer_t * buffer) |
| 1099 | { |
| 1100 | snd_mixer_oss_t *mixer = entry->private_data; |
| 1101 | char line[128], str[32], idxstr[16], *cptr; |
| 1102 | int ch, idx; |
| 1103 | struct snd_mixer_oss_assign_table *tbl; |
| 1104 | struct slot *slot; |
| 1105 | |
| 1106 | while (!snd_info_get_line(buffer, line, sizeof(line))) { |
| 1107 | cptr = snd_info_get_str(str, line, sizeof(str)); |
| 1108 | for (ch = 0; ch < SNDRV_OSS_MAX_MIXERS; ch++) |
| 1109 | if (oss_mixer_names[ch] && strcmp(oss_mixer_names[ch], str) == 0) |
| 1110 | break; |
| 1111 | if (ch >= SNDRV_OSS_MAX_MIXERS) { |
| 1112 | snd_printk(KERN_ERR "mixer_oss: invalid OSS volume '%s'\n", str); |
| 1113 | continue; |
| 1114 | } |
| 1115 | cptr = snd_info_get_str(str, cptr, sizeof(str)); |
| 1116 | if (! *str) { |
| 1117 | /* remove the entry */ |
| 1118 | down(&mixer->reg_mutex); |
| 1119 | mixer_slot_clear(&mixer->slots[ch]); |
| 1120 | up(&mixer->reg_mutex); |
| 1121 | continue; |
| 1122 | } |
| 1123 | snd_info_get_str(idxstr, cptr, sizeof(idxstr)); |
| 1124 | idx = simple_strtoul(idxstr, NULL, 10); |
| 1125 | if (idx >= 0x4000) { /* too big */ |
| 1126 | snd_printk(KERN_ERR "mixer_oss: invalid index %d\n", idx); |
| 1127 | continue; |
| 1128 | } |
| 1129 | down(&mixer->reg_mutex); |
| 1130 | slot = (struct slot *)mixer->slots[ch].private_data; |
| 1131 | if (slot && slot->assigned && |
| 1132 | slot->assigned->index == idx && ! strcmp(slot->assigned->name, str)) |
| 1133 | /* not changed */ |
| 1134 | goto __unlock; |
| 1135 | tbl = kmalloc(sizeof(*tbl), GFP_KERNEL); |
| 1136 | if (! tbl) { |
| 1137 | snd_printk(KERN_ERR "mixer_oss: no memory\n"); |
| 1138 | goto __unlock; |
| 1139 | } |
| 1140 | tbl->oss_id = ch; |
Paulo Marques | 543537b | 2005-06-23 00:09:02 -0700 | [diff] [blame] | 1141 | tbl->name = kstrdup(str, GFP_KERNEL); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1142 | if (! tbl->name) { |
| 1143 | kfree(tbl); |
| 1144 | goto __unlock; |
| 1145 | } |
| 1146 | tbl->index = idx; |
| 1147 | if (snd_mixer_oss_build_input(mixer, tbl, 1, 1) <= 0) { |
| 1148 | kfree(tbl->name); |
| 1149 | kfree(tbl); |
| 1150 | } |
| 1151 | __unlock: |
| 1152 | up(&mixer->reg_mutex); |
| 1153 | } |
| 1154 | } |
| 1155 | |
| 1156 | static void snd_mixer_oss_proc_init(snd_mixer_oss_t *mixer) |
| 1157 | { |
| 1158 | snd_info_entry_t *entry; |
| 1159 | |
| 1160 | entry = snd_info_create_card_entry(mixer->card, "oss_mixer", |
| 1161 | mixer->card->proc_root); |
| 1162 | if (! entry) |
| 1163 | return; |
| 1164 | entry->content = SNDRV_INFO_CONTENT_TEXT; |
| 1165 | entry->mode = S_IFREG | S_IRUGO | S_IWUSR; |
| 1166 | entry->c.text.read_size = 8192; |
| 1167 | entry->c.text.read = snd_mixer_oss_proc_read; |
| 1168 | entry->c.text.write_size = 8192; |
| 1169 | entry->c.text.write = snd_mixer_oss_proc_write; |
| 1170 | entry->private_data = mixer; |
| 1171 | if (snd_info_register(entry) < 0) { |
| 1172 | snd_info_free_entry(entry); |
| 1173 | entry = NULL; |
| 1174 | } |
| 1175 | mixer->proc_entry = entry; |
| 1176 | } |
| 1177 | |
| 1178 | static void snd_mixer_oss_proc_done(snd_mixer_oss_t *mixer) |
| 1179 | { |
| 1180 | if (mixer->proc_entry) { |
| 1181 | snd_info_unregister(mixer->proc_entry); |
| 1182 | mixer->proc_entry = NULL; |
| 1183 | } |
| 1184 | } |
| 1185 | |
| 1186 | static void snd_mixer_oss_build(snd_mixer_oss_t *mixer) |
| 1187 | { |
| 1188 | static struct snd_mixer_oss_assign_table table[] = { |
| 1189 | { SOUND_MIXER_VOLUME, "Master", 0 }, |
| 1190 | { SOUND_MIXER_VOLUME, "Front", 0 }, /* fallback */ |
| 1191 | { SOUND_MIXER_BASS, "Tone Control - Bass", 0 }, |
| 1192 | { SOUND_MIXER_TREBLE, "Tone Control - Treble", 0 }, |
| 1193 | { SOUND_MIXER_SYNTH, "Synth", 0 }, |
| 1194 | { SOUND_MIXER_SYNTH, "FM", 0 }, /* fallback */ |
| 1195 | { SOUND_MIXER_SYNTH, "Music", 0 }, /* fallback */ |
| 1196 | { SOUND_MIXER_PCM, "PCM", 0 }, |
| 1197 | { SOUND_MIXER_SPEAKER, "PC Speaker", 0 }, |
| 1198 | { SOUND_MIXER_LINE, "Line", 0 }, |
| 1199 | { SOUND_MIXER_MIC, "Mic", 0 }, |
| 1200 | { SOUND_MIXER_CD, "CD", 0 }, |
| 1201 | { SOUND_MIXER_IMIX, "Monitor Mix", 0 }, |
| 1202 | { SOUND_MIXER_ALTPCM, "PCM", 1 }, |
| 1203 | { SOUND_MIXER_ALTPCM, "Headphone", 0 }, /* fallback */ |
| 1204 | { SOUND_MIXER_ALTPCM, "Wave", 0 }, /* fallback */ |
| 1205 | { SOUND_MIXER_RECLEV, "-- nothing --", 0 }, |
| 1206 | { SOUND_MIXER_IGAIN, "Capture", 0 }, |
| 1207 | { SOUND_MIXER_OGAIN, "Playback", 0 }, |
| 1208 | { SOUND_MIXER_LINE1, "Aux", 0 }, |
| 1209 | { SOUND_MIXER_LINE2, "Aux", 1 }, |
| 1210 | { SOUND_MIXER_LINE3, "Aux", 2 }, |
| 1211 | { SOUND_MIXER_DIGITAL1, "Digital", 0 }, |
| 1212 | { SOUND_MIXER_DIGITAL1, "IEC958", 0 }, /* fallback */ |
| 1213 | { SOUND_MIXER_DIGITAL1, "IEC958 Optical", 0 }, /* fallback */ |
| 1214 | { SOUND_MIXER_DIGITAL1, "IEC958 Coaxial", 0 }, /* fallback */ |
| 1215 | { SOUND_MIXER_DIGITAL2, "Digital", 1 }, |
| 1216 | { SOUND_MIXER_DIGITAL3, "Digital", 2 }, |
| 1217 | { SOUND_MIXER_PHONEIN, "Phone", 0 }, |
| 1218 | { SOUND_MIXER_PHONEOUT, "Master Mono", 0 }, |
| 1219 | { SOUND_MIXER_PHONEOUT, "Phone", 0 }, /* fallback */ |
| 1220 | { SOUND_MIXER_VIDEO, "Video", 0 }, |
| 1221 | { SOUND_MIXER_RADIO, "Radio", 0 }, |
| 1222 | { SOUND_MIXER_MONITOR, "Monitor", 0 } |
| 1223 | }; |
| 1224 | unsigned int idx; |
| 1225 | |
| 1226 | for (idx = 0; idx < ARRAY_SIZE(table); idx++) |
| 1227 | snd_mixer_oss_build_input(mixer, &table[idx], 0, 0); |
| 1228 | if (mixer->mask_recsrc) { |
| 1229 | mixer->get_recsrc = snd_mixer_oss_get_recsrc2; |
| 1230 | mixer->put_recsrc = snd_mixer_oss_put_recsrc2; |
| 1231 | } |
| 1232 | } |
| 1233 | |
| 1234 | /* |
| 1235 | * |
| 1236 | */ |
| 1237 | |
| 1238 | static int snd_mixer_oss_free1(void *private) |
| 1239 | { |
| 1240 | snd_mixer_oss_t *mixer = private; |
| 1241 | snd_card_t * card; |
| 1242 | int idx; |
| 1243 | |
| 1244 | snd_assert(mixer != NULL, return -ENXIO); |
| 1245 | card = mixer->card; |
| 1246 | snd_assert(mixer == card->mixer_oss, return -ENXIO); |
| 1247 | card->mixer_oss = NULL; |
| 1248 | for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) { |
| 1249 | snd_mixer_oss_slot_t *chn = &mixer->slots[idx]; |
| 1250 | if (chn->private_free) |
| 1251 | chn->private_free(chn); |
| 1252 | } |
| 1253 | kfree(mixer); |
| 1254 | return 0; |
| 1255 | } |
| 1256 | |
| 1257 | static int snd_mixer_oss_notify_handler(snd_card_t * card, int cmd) |
| 1258 | { |
| 1259 | snd_mixer_oss_t *mixer; |
| 1260 | |
| 1261 | if (cmd == SND_MIXER_OSS_NOTIFY_REGISTER) { |
| 1262 | char name[128]; |
| 1263 | int idx, err; |
| 1264 | |
| 1265 | mixer = kcalloc(2, sizeof(*mixer), GFP_KERNEL); |
| 1266 | if (mixer == NULL) |
| 1267 | return -ENOMEM; |
| 1268 | init_MUTEX(&mixer->reg_mutex); |
| 1269 | sprintf(name, "mixer%i%i", card->number, 0); |
| 1270 | if ((err = snd_register_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, |
| 1271 | card, 0, |
| 1272 | &snd_mixer_oss_reg, |
| 1273 | name)) < 0) { |
| 1274 | snd_printk("unable to register OSS mixer device %i:%i\n", card->number, 0); |
| 1275 | kfree(mixer); |
| 1276 | return err; |
| 1277 | } |
| 1278 | mixer->oss_dev_alloc = 1; |
| 1279 | mixer->card = card; |
| 1280 | if (*card->mixername) |
| 1281 | strlcpy(mixer->name, card->mixername, sizeof(mixer->name)); |
| 1282 | else |
| 1283 | strlcpy(mixer->name, name, sizeof(mixer->name)); |
| 1284 | #ifdef SNDRV_OSS_INFO_DEV_MIXERS |
| 1285 | snd_oss_info_register(SNDRV_OSS_INFO_DEV_MIXERS, |
| 1286 | card->number, |
| 1287 | mixer->name); |
| 1288 | #endif |
| 1289 | for (idx = 0; idx < SNDRV_OSS_MAX_MIXERS; idx++) |
| 1290 | mixer->slots[idx].number = idx; |
| 1291 | card->mixer_oss = mixer; |
| 1292 | snd_mixer_oss_build(mixer); |
| 1293 | snd_mixer_oss_proc_init(mixer); |
| 1294 | } else if (cmd == SND_MIXER_OSS_NOTIFY_DISCONNECT) { |
| 1295 | mixer = card->mixer_oss; |
| 1296 | if (mixer == NULL || !mixer->oss_dev_alloc) |
| 1297 | return 0; |
| 1298 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); |
| 1299 | mixer->oss_dev_alloc = 0; |
| 1300 | } else { /* free */ |
| 1301 | mixer = card->mixer_oss; |
| 1302 | if (mixer == NULL) |
| 1303 | return 0; |
| 1304 | #ifdef SNDRV_OSS_INFO_DEV_MIXERS |
| 1305 | snd_oss_info_unregister(SNDRV_OSS_INFO_DEV_MIXERS, mixer->card->number); |
| 1306 | #endif |
| 1307 | if (mixer->oss_dev_alloc) |
| 1308 | snd_unregister_oss_device(SNDRV_OSS_DEVICE_TYPE_MIXER, mixer->card, 0); |
| 1309 | snd_mixer_oss_proc_done(mixer); |
| 1310 | return snd_mixer_oss_free1(mixer); |
| 1311 | } |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | static int __init alsa_mixer_oss_init(void) |
| 1316 | { |
| 1317 | int idx; |
| 1318 | |
| 1319 | snd_mixer_oss_notify_callback = snd_mixer_oss_notify_handler; |
| 1320 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
| 1321 | if (snd_cards[idx]) |
| 1322 | snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_REGISTER); |
| 1323 | } |
| 1324 | return 0; |
| 1325 | } |
| 1326 | |
| 1327 | static void __exit alsa_mixer_oss_exit(void) |
| 1328 | { |
| 1329 | int idx; |
| 1330 | |
| 1331 | snd_mixer_oss_notify_callback = NULL; |
| 1332 | for (idx = 0; idx < SNDRV_CARDS; idx++) { |
| 1333 | if (snd_cards[idx]) |
| 1334 | snd_mixer_oss_notify_handler(snd_cards[idx], SND_MIXER_OSS_NOTIFY_FREE); |
| 1335 | } |
| 1336 | } |
| 1337 | |
| 1338 | module_init(alsa_mixer_oss_init) |
| 1339 | module_exit(alsa_mixer_oss_exit) |
| 1340 | |
| 1341 | EXPORT_SYMBOL(snd_mixer_oss_ioctl_card); |