sound/pci/au88x0/au88x0_pcm.c

   1 /*
   2  *  This program is free software; you can redistribute it and/or modify
   3  *  it under the terms of the GNU General Public License as published by
   4  *  the Free Software Foundation; either version 2 of the License, or
   5  *  (at your option) any later version.
   6  *
   7  *  This program is distributed in the hope that it will be useful,
   8  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  *  GNU Library General Public License for more details.
  11  *
  12  *  You should have received a copy of the GNU General Public License
  13  *  along with this program; if not, write to the Free Software
  14  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  15  */
  16
  17 /*
  18  * Vortex PCM ALSA driver.
  19  *
  20  * Supports ADB and WT DMA. Unfortunately, WT channels do not run yet.
  21  * It remains stuck,and DMA transfers do not happen.
  22  */
  23 #include <sound/asoundef.h>
  24 #include <linux/time.h>
  25 #include <sound/core.h>
  26 #include <sound/pcm.h>
  27 #include <sound/pcm_params.h>
  28 #include "au88x0.h"
  29
  30 #define VORTEX_PCM_TYPE(x) (x->name[40])
  31
  32 /* hardware definition */
  33 static struct snd_pcm_hardware snd_vortex_playback_hw_adb = {
  34         .info =
  35             (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
  36              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  37              SNDRV_PCM_INFO_MMAP_VALID),
  38         .formats =
  39             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  40             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  41         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  42         .rate_min = 5000,
  43         .rate_max = 48000,
  44         .channels_min = 1,
  45 #ifdef CHIP_AU8830
  46         .channels_max = 4,
  47 #else
  48         .channels_max = 2,
  49 #endif
  50         .buffer_bytes_max = 0x10000,
  51         .period_bytes_min = 0x1,
  52         .period_bytes_max = 0x1000,
  53         .periods_min = 2,
  54         .periods_max = 32,
  55 };
  56
  57 #ifndef CHIP_AU8820
  58 static struct snd_pcm_hardware snd_vortex_playback_hw_a3d = {
  59         .info =
  60             (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
  61              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  62              SNDRV_PCM_INFO_MMAP_VALID),
  63         .formats =
  64             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  65             SNDRV_PCM_FMTBIT_MU_LAW | SNDRV_PCM_FMTBIT_A_LAW,
  66         .rates = SNDRV_PCM_RATE_CONTINUOUS,
  67         .rate_min = 5000,
  68         .rate_max = 48000,
  69         .channels_min = 1,
  70         .channels_max = 1,
  71         .buffer_bytes_max = 0x10000,
  72         .period_bytes_min = 0x100,
  73         .period_bytes_max = 0x1000,
  74         .periods_min = 2,
  75         .periods_max = 64,
  76 };
  77 #endif
  78 static struct snd_pcm_hardware snd_vortex_playback_hw_spdif = {
  79         .info =
  80             (SNDRV_PCM_INFO_MMAP | /* SNDRV_PCM_INFO_RESUME | */
  81              SNDRV_PCM_INFO_PAUSE | SNDRV_PCM_INFO_INTERLEAVED |
  82              SNDRV_PCM_INFO_MMAP_VALID),
  83         .formats =
  84             SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_U8 |
  85             SNDRV_PCM_FMTBIT_IEC958_SUBFRAME_LE | SNDRV_PCM_FMTBIT_MU_LAW |
  86             SNDRV_PCM_FMTBIT_A_LAW,
  87         .rates =
  88             SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | SNDRV_PCM_RATE_48000,
  89         .rate_min = 32000,
  90         .rate_max = 48000,
  91         .channels_min = 1,
  92         .channels_max = 2,
  93         .buffer_bytes_max = 0x10000,
  94         .period_bytes_min = 0x100,
  95         .period_bytes_max = 0x1000,
  96         .periods_min = 2,
  97         .periods_max = 64,
  98 };
  99
 100 #ifndef CHIP_AU8810
 101 static struct snd_pcm_hardware snd_vortex_playback_hw_wt = {
 102         .info = (SNDRV_PCM_INFO_MMAP |
 103                  SNDRV_PCM_INFO_INTERLEAVED |
 104                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
 105         .formats = SNDRV_PCM_FMTBIT_S16_LE,
 106         .rates = SNDRV_PCM_RATE_8000_48000 | SNDRV_PCM_RATE_CONTINUOUS, // SNDRV_PCM_RATE_48000,
 107         .rate_min = 8000,
 108         .rate_max = 48000,
 109         .channels_min = 1,
 110         .channels_max = 2,
 111         .buffer_bytes_max = 0x10000,
 112         .period_bytes_min = 0x0400,
 113         .period_bytes_max = 0x1000,
 114         .periods_min = 2,
 115         .periods_max = 64,
 116 };
 117 #endif
 118 /* open callback */
 119 static int snd_vortex_pcm_open(struct snd_pcm_substream *substream)
 120 {
 121         vortex_t *vortex = snd_pcm_substream_chip(substream);
 122         struct snd_pcm_runtime *runtime = substream->runtime;
 123         int err;
 124
 125         /* Force equal size periods */
 126         if ((err =
 127              snd_pcm_hw_constraint_integer(runtime,
 128                                            SNDRV_PCM_HW_PARAM_PERIODS)) < 0)
 129                 return err;
 130         /* Avoid PAGE_SIZE boundary to fall inside of a period. */
 131         if ((err =
 132              snd_pcm_hw_constraint_pow2(runtime, 0,
 133                                         SNDRV_PCM_HW_PARAM_PERIOD_BYTES)) < 0)
 134                 return err;
 135
 136         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 137 #ifndef CHIP_AU8820
 138                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_A3D) {
 139                         runtime->hw = snd_vortex_playback_hw_a3d;
 140                 }
 141 #endif
 142                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_SPDIF) {
 143                         runtime->hw = snd_vortex_playback_hw_spdif;
 144                         switch (vortex->spdif_sr) {
 145                         case 32000:
 146                                 runtime->hw.rates = SNDRV_PCM_RATE_32000;
 147                                 break;
 148                         case 44100:
 149                                 runtime->hw.rates = SNDRV_PCM_RATE_44100;
 150                                 break;
 151                         case 48000:
 152                                 runtime->hw.rates = SNDRV_PCM_RATE_48000;
 153                                 break;
 154                         }
 155                 }
 156                 if (VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_ADB
 157                     || VORTEX_PCM_TYPE(substream->pcm) == VORTEX_PCM_I2S)
 158                         runtime->hw = snd_vortex_playback_hw_adb;
 159                 substream->runtime->private_data = NULL;
 160         }
 161 #ifndef CHIP_AU8810
 162         else {
 163                 runtime->hw = snd_vortex_playback_hw_wt;
 164                 substream->runtime->private_data = NULL;
 165         }
 166 #endif
 167         return 0;
 168 }
 169
 170 /* close callback */
 171 static int snd_vortex_pcm_close(struct snd_pcm_substream *substream)
 172 {
 173         //vortex_t *chip = snd_pcm_substream_chip(substream);
 174         stream_t *stream = (stream_t *) substream->runtime->private_data;
 175
 176         // the hardware-specific codes will be here
 177         if (stream != NULL) {
 178                 stream->substream = NULL;
 179                 stream->nr_ch = 0;
 180         }
 181         substream->runtime->private_data = NULL;
 182         return 0;
 183 }
 184
 185 /* hw_params callback */
 186 static int
 187 snd_vortex_pcm_hw_params(struct snd_pcm_substream *substream,
 188                          struct snd_pcm_hw_params *hw_params)
 189 {
 190         vortex_t *chip = snd_pcm_substream_chip(substream);
 191         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 192         int err;
 193
 194         // Alloc buffer memory.
 195         err =
 196             snd_pcm_lib_malloc_pages(substream, params_buffer_bytes(hw_params));
 197         if (err < 0) {
 198                 printk(KERN_ERR "Vortex: pcm page alloc failed!\n");
 199                 return err;
 200         }
 201         /*
 202            printk(KERN_INFO "Vortex: periods %d, period_bytes %d, channels = %d\n", params_periods(hw_params),
 203            params_period_bytes(hw_params), params_channels(hw_params));
 204          */
 205         spin_lock_irq(&chip->lock);
 206         // Make audio routes and config buffer DMA.
 207         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 208                 int dma, type = VORTEX_PCM_TYPE(substream->pcm);
 209                 /* Dealloc any routes. */
 210                 if (stream != NULL)
 211                         vortex_adb_allocroute(chip, stream->dma,
 212                                               stream->nr_ch, stream->dir,
 213                                               stream->type);
 214                 /* Alloc routes. */
 215                 dma =
 216                     vortex_adb_allocroute(chip, -1,
 217                                           params_channels(hw_params),
 218                                           substream->stream, type);
 219                 if (dma < 0) {
 220                         spin_unlock_irq(&chip->lock);
 221                         return dma;
 222                 }
 223                 stream = substream->runtime->private_data = &chip->dma_adb[dma];
 224                 stream->substream = substream;
 225                 /* Setup Buffers. */
 226                 vortex_adbdma_setbuffers(chip, dma,
 227                                          params_period_bytes(hw_params),
 228                                          params_periods(hw_params));
 229         }
 230 #ifndef CHIP_AU8810
 231         else {
 232                 /* if (stream != NULL)
 233                    vortex_wt_allocroute(chip, substream->number, 0); */
 234                 vortex_wt_allocroute(chip, substream->number,
 235                                      params_channels(hw_params));
 236                 stream = substream->runtime->private_data =
 237                     &chip->dma_wt[substream->number];
 238                 stream->dma = substream->number;
 239                 stream->substream = substream;
 240                 vortex_wtdma_setbuffers(chip, substream->number,
 241                                         params_period_bytes(hw_params),
 242                                         params_periods(hw_params));
 243         }
 244 #endif
 245         spin_unlock_irq(&chip->lock);
 246         return 0;
 247 }
 248
 249 /* hw_free callback */
 250 static int snd_vortex_pcm_hw_free(struct snd_pcm_substream *substream)
 251 {
 252         vortex_t *chip = snd_pcm_substream_chip(substream);
 253         stream_t *stream = (stream_t *) (substream->runtime->private_data);
 254
 255         spin_lock_irq(&chip->lock);
 256         // Delete audio routes.
 257         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 258                 if (stream != NULL)
 259                         vortex_adb_allocroute(chip, stream->dma,
 260                                               stream->nr_ch, stream->dir,
 261                                               stream->type);
 262         }
 263 #ifndef CHIP_AU8810
 264         else {
 265                 if (stream != NULL)
 266                         vortex_wt_allocroute(chip, stream->dma, 0);
 267         }
 268 #endif
 269         substream->runtime->private_data = NULL;
 270         spin_unlock_irq(&chip->lock);
 271
 272         return snd_pcm_lib_free_pages(substream);
 273 }
 274
 275 /* prepare callback */
 276 static int snd_vortex_pcm_prepare(struct snd_pcm_substream *substream)
 277 {
 278         vortex_t *chip = snd_pcm_substream_chip(substream);
 279         struct snd_pcm_runtime *runtime = substream->runtime;
 280         stream_t *stream = (stream_t *) substream->runtime->private_data;
 281         int dma = stream->dma, fmt, dir;
 282
 283         // set up the hardware with the current configuration.
 284         if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
 285                 dir = 1;
 286         else
 287                 dir = 0;
 288         fmt = vortex_alsafmt_aspfmt(runtime->format);
 289         spin_lock_irq(&chip->lock);
 290         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 291                 vortex_adbdma_setmode(chip, dma, 1, dir, fmt, 0 /*? */ ,
 292                                       0);
 293                 vortex_adbdma_setstartbuffer(chip, dma, 0);
 294                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_SPDIF)
 295                         vortex_adb_setsrc(chip, dma, runtime->rate, dir);
 296         }
 297 #ifndef CHIP_AU8810
 298         else {
 299                 vortex_wtdma_setmode(chip, dma, 1, fmt, 0, 0);
 300                 // FIXME: Set rate (i guess using vortex_wt_writereg() somehow).
 301                 vortex_wtdma_setstartbuffer(chip, dma, 0);
 302         }
 303 #endif
 304         spin_unlock_irq(&chip->lock);
 305         return 0;
 306 }
 307
 308 /* trigger callback */
 309 static int snd_vortex_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
 310 {
 311         vortex_t *chip = snd_pcm_substream_chip(substream);
 312         stream_t *stream = (stream_t *) substream->runtime->private_data;
 313         int dma = stream->dma;
 314
 315         spin_lock(&chip->lock);
 316         switch (cmd) {
 317         case SNDRV_PCM_TRIGGER_START:
 318                 // do something to start the PCM engine
 319                 //printk(KERN_INFO "vortex: start %d\n", dma);
 320                 stream->fifo_enabled = 1;
 321                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT) {
 322                         vortex_adbdma_resetup(chip, dma);
 323                         vortex_adbdma_startfifo(chip, dma);
 324                 }
 325 #ifndef CHIP_AU8810
 326                 else {
 327                         printk(KERN_INFO "vortex: wt start %d\n", dma);
 328                         vortex_wtdma_startfifo(chip, dma);
 329                 }
 330 #endif
 331                 break;
 332         case SNDRV_PCM_TRIGGER_STOP:
 333                 // do something to stop the PCM engine
 334                 //printk(KERN_INFO "vortex: stop %d\n", dma);
 335                 stream->fifo_enabled = 0;
 336                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 337                         vortex_adbdma_pausefifo(chip, dma);
 338                 //vortex_adbdma_stopfifo(chip, dma);
 339 #ifndef CHIP_AU8810
 340                 else {
 341                         printk(KERN_INFO "vortex: wt stop %d\n", dma);
 342                         vortex_wtdma_stopfifo(chip, dma);
 343                 }
 344 #endif
 345                 break;
 346         case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
 347                 //printk(KERN_INFO "vortex: pause %d\n", dma);
 348                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 349                         vortex_adbdma_pausefifo(chip, dma);
 350 #ifndef CHIP_AU8810
 351                 else
 352                         vortex_wtdma_pausefifo(chip, dma);
 353 #endif
 354                 break;
 355         case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
 356                 //printk(KERN_INFO "vortex: resume %d\n", dma);
 357                 if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 358                         vortex_adbdma_resumefifo(chip, dma);
 359 #ifndef CHIP_AU8810
 360                 else
 361                         vortex_wtdma_resumefifo(chip, dma);
 362 #endif
 363                 break;
 364         default:
 365                 spin_unlock(&chip->lock);
 366                 return -EINVAL;
 367         }
 368         spin_unlock(&chip->lock);
 369         return 0;
 370 }
 371
 372 /* pointer callback */
 373 static snd_pcm_uframes_t snd_vortex_pcm_pointer(struct snd_pcm_substream *substream)
 374 {
 375         vortex_t *chip = snd_pcm_substream_chip(substream);
 376         stream_t *stream = (stream_t *) substream->runtime->private_data;
 377         int dma = stream->dma;
 378         snd_pcm_uframes_t current_ptr = 0;
 379
 380         spin_lock(&chip->lock);
 381         if (VORTEX_PCM_TYPE(substream->pcm) != VORTEX_PCM_WT)
 382                 current_ptr = vortex_adbdma_getlinearpos(chip, dma);
 383 #ifndef CHIP_AU8810
 384         else
 385                 current_ptr = vortex_wtdma_getlinearpos(chip, dma);
 386 #endif
 387         //printk(KERN_INFO "vortex: pointer = 0x%x\n", current_ptr);
 388         spin_unlock(&chip->lock);
 389         return (bytes_to_frames(substream->runtime, current_ptr));
 390 }
 391
 392 /* operators */
 393 static struct snd_pcm_ops snd_vortex_playback_ops = {
 394         .open = snd_vortex_pcm_open,
 395         .close = snd_vortex_pcm_close,
 396         .ioctl = snd_pcm_lib_ioctl,
 397         .hw_params = snd_vortex_pcm_hw_params,
 398         .hw_free = snd_vortex_pcm_hw_free,
 399         .prepare = snd_vortex_pcm_prepare,
 400         .trigger = snd_vortex_pcm_trigger,
 401         .pointer = snd_vortex_pcm_pointer,
 402         .page = snd_pcm_sgbuf_ops_page,
 403 };
 404
 405 /*
 406 *  definitions of capture are omitted here...
 407 */
 408
 409 static char *vortex_pcm_prettyname[VORTEX_PCM_LAST] = {
 410         "AU88x0 ADB",
 411         "AU88x0 SPDIF",
 412         "AU88x0 A3D",
 413         "AU88x0 WT",
 414         "AU88x0 I2S",
 415 };
 416 static char *vortex_pcm_name[VORTEX_PCM_LAST] = {
 417         "adb",
 418         "spdif",
 419         "a3d",
 420         "wt",
 421         "i2s",
 422 };
 423
 424 /* SPDIF kcontrol */
 425
 426 static int snd_vortex_spdif_info(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_info *uinfo)
 427 {
 428         uinfo->type = SNDRV_CTL_ELEM_TYPE_IEC958;
 429         uinfo->count = 1;
 430         return 0;
 431 }
 432
 433 static int snd_vortex_spdif_mask_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 434 {
 435         ucontrol->value.iec958.status[0] = 0xff;
 436         ucontrol->value.iec958.status[1] = 0xff;
 437         ucontrol->value.iec958.status[2] = 0xff;
 438         ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS;
 439         return 0;
 440 }
 441
 442 static int snd_vortex_spdif_get(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 443 {
 444         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 445         ucontrol->value.iec958.status[0] = 0x00;
 446         ucontrol->value.iec958.status[1] = IEC958_AES1_CON_ORIGINAL|IEC958_AES1_CON_DIGDIGCONV_ID;
 447         ucontrol->value.iec958.status[2] = 0x00;
 448         switch (vortex->spdif_sr) {
 449         case 32000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_32000; break;
 450         case 44100: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_44100; break;
 451         case 48000: ucontrol->value.iec958.status[3] = IEC958_AES3_CON_FS_48000; break;
 452         }
 453         return 0;
 454 }
 455
 456 static int snd_vortex_spdif_put(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 457 {
 458         vortex_t *vortex = snd_kcontrol_chip(kcontrol);
 459         int spdif_sr = 48000;
 460         switch (ucontrol->value.iec958.status[3] & IEC958_AES3_CON_FS) {
 461         case IEC958_AES3_CON_FS_32000: spdif_sr = 32000; break;
 462         case IEC958_AES3_CON_FS_44100: spdif_sr = 44100; break;
 463         case IEC958_AES3_CON_FS_48000: spdif_sr = 48000; break;
 464         }
 465         if (spdif_sr == vortex->spdif_sr)
 466                 return 0;
 467         vortex->spdif_sr = spdif_sr;
 468         vortex_spdif_init(vortex, vortex->spdif_sr, 1);
 469         return 1;
 470 }
 471
 472 /* spdif controls */
 473 static struct snd_kcontrol_new snd_vortex_mixer_spdif[] __devinitdata = {
 474         {
 475                 .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 476                 .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,DEFAULT),
 477                 .info =         snd_vortex_spdif_info,
 478                 .get =          snd_vortex_spdif_get,
 479                 .put =          snd_vortex_spdif_put,
 480         },
 481         {
 482                 .access =       SNDRV_CTL_ELEM_ACCESS_READ,
 483                 .iface =        SNDRV_CTL_ELEM_IFACE_PCM,
 484                 .name =         SNDRV_CTL_NAME_IEC958("",PLAYBACK,CON_MASK),
 485                 .info =         snd_vortex_spdif_info,
 486                 .get =          snd_vortex_spdif_mask_get
 487         },
 488 };
 489
 490 /* create a pcm device */
 491 static int __devinit snd_vortex_new_pcm(vortex_t *chip, int idx, int nr)
 492 {
 493         struct snd_pcm *pcm;
 494         struct snd_kcontrol *kctl;
 495         int i;
 496         int err, nr_capt;
 497
 498         if (!chip || idx < 0 || idx >= VORTEX_PCM_LAST)
 499                 return -ENODEV;
 500
 501         /* idx indicates which kind of PCM device. ADB, SPDIF, I2S and A3D share the
 502          * same dma engine. WT uses it own separate dma engine whcih cant capture. */
 503         if (idx == VORTEX_PCM_ADB)
 504                 nr_capt = nr;
 505         else
 506                 nr_capt = 0;
 507         err = snd_pcm_new(chip->card, vortex_pcm_prettyname[idx], idx, nr,
 508                           nr_capt, &pcm);
 509         if (err < 0)
 510                 return err;
 511         strcpy(pcm->name, vortex_pcm_name[idx]);
 512         chip->pcm[idx] = pcm;
 513         // This is an evil hack, but it saves a lot of duplicated code.
 514         VORTEX_PCM_TYPE(pcm) = idx;
 515         pcm->private_data = chip;
 516         /* set operators */
 517         snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_PLAYBACK,
 518                         &snd_vortex_playback_ops);
 519         if (idx == VORTEX_PCM_ADB)
 520                 snd_pcm_set_ops(pcm, SNDRV_PCM_STREAM_CAPTURE,
 521                                 &snd_vortex_playback_ops);
 522
 523         /* pre-allocation of Scatter-Gather buffers */
 524
 525         snd_pcm_lib_preallocate_pages_for_all(pcm, SNDRV_DMA_TYPE_DEV_SG,
 526                                               snd_dma_pci_data(chip->pci_dev),
 527                                               0x10000, 0x10000);
 528
 529         if (VORTEX_PCM_TYPE(pcm) == VORTEX_PCM_SPDIF) {
 530                 for (i = 0; i < ARRAY_SIZE(snd_vortex_mixer_spdif); i++) {
 531                         kctl = snd_ctl_new1(&snd_vortex_mixer_spdif[i], chip);
 532                         if (!kctl)
 533                                 return -ENOMEM;
 534                         if ((err = snd_ctl_add(chip->card, kctl)) < 0)
 535                                 return err;
 536                 }
 537         }
 538         return 0;
 539 }