sound/pci/aw2/aw2-alsa.c

   1 /*****************************************************************************
   2  *
   3  * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and
   4  * Jean-Christian Hassler <jhassler@free.fr>
   5  *
   6  * This file is part of the Audiowerk2 ALSA driver
   7  *
   8  * The Audiowerk2 ALSA driver is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; version 2.
  11  *
  12  * The Audiowerk2 ALSA driver is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with the Audiowerk2 ALSA driver; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
  20  * USA.
  21  *
  22  *****************************************************************************/
  23 #include <linux/init.h>
  24 #include <linux/pci.h>
  25 #include <linux/dma-mapping.h>
  26 #include <linux/slab.h>
  27 #include <linux/interrupt.h>
  28 #include <linux/delay.h>
  29 #include <linux/io.h>
  30 #include <linux/module.h>
  31 #include <sound/core.h>
  32 #include <sound/initval.h>
  33 #include <sound/pcm.h>
  34 #include <sound/pcm_params.h>
  35 #include <sound/control.h>
  36
  37 #include "saa7146.h"
  38 #include "aw2-saa7146.h"
  39
  40 MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
  41               "Jean-Christian Hassler <jhassler@free.fr>");
  42 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
  43 MODULE_LICENSE("GPL");
  44
  45 /*********************************
  46  * DEFINES
  47  ********************************/
  48 #define CTL_ROUTE_ANALOG 0
  49 #define CTL_ROUTE_DIGITAL 1
  50
  51 /*********************************
  52  * TYPEDEFS
  53  ********************************/
  54   /* hardware definition */
  55 static struct snd_pcm_hardware snd_aw2_playback_hw = {
  56         .info = (SNDRV_PCM_INFO_MMAP |
  57                  SNDRV_PCM_INFO_INTERLEAVED |
  58                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  59         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  60         .rates = SNDRV_PCM_RATE_44100,
  61         .rate_min = 44100,
  62         .rate_max = 44100,
  63         .channels_min = 2,
  64         .channels_max = 4,
  65         .buffer_bytes_max = 32768,
  66         .period_bytes_min = 4096,
  67         .period_bytes_max = 32768,
  68         .periods_min = 1,
  69         .periods_max = 1024,
  70 };
  71
  72 static struct snd_pcm_hardware snd_aw2_capture_hw = {
  73         .info = (SNDRV_PCM_INFO_MMAP |
  74                  SNDRV_PCM_INFO_INTERLEAVED |
  75                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  76         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  77         .rates = SNDRV_PCM_RATE_44100,
  78         .rate_min = 44100,
  79         .rate_max = 44100,
  80         .channels_min = 2,
  81         .channels_max = 2,
  82         .buffer_bytes_max = 32768,
  83         .period_bytes_min = 4096,
  84         .period_bytes_max = 32768,
  85         .periods_min = 1,
  86         .periods_max = 1024,
  87 };
  88
  89 struct aw2_pcm_device {
  90         struct snd_pcm *pcm;
  91         unsigned int stream_number;
  92         struct aw2 *chip;
  93 };
  94
  95 struct aw2 {
  96         struct snd_aw2_saa7146 saa7146;
  97
  98         struct pci_dev *pci;
  99         int irq;
 100         spinlock_t reg_lock;
 101         struct mutex mtx;
 102
 103         unsigned long iobase_phys;
 104         void __iomem *iobase_virt;
 105
 106         struct snd_card *card;
 107
 108         struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
 109         struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
 110 };
 111
 112 /*********************************
 113  * FUNCTION DECLARATIONS
 114  ********************************/
 115 static int snd_aw2_dev_free(struct snd_device *device);
 116 static int snd_aw2_create(struct snd_card *card,
 117                           struct pci_dev *pci, struct aw2 **rchip);
 118 static int snd_aw2_probe(struct pci_dev *pci,
 119                          const struct pci_device_id *pci_id);
 120 static void snd_aw2_remove(struct pci_dev *pci);
 121 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
 122 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
 123 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
 124 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
 125 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 126                                  struct snd_pcm_hw_params *hw_params);
 127 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
 128 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
 129 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
 130 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 131                                         int cmd);
 132 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 133                                        int cmd);
 134 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 135                                                       *substream);
 136 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 137                                                      *substream);
 138 static int snd_aw2_new_pcm(struct aw2 *chip);
 139
 140 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 141                                                struct snd_ctl_elem_info *uinfo);
 142 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 143                                               struct snd_ctl_elem_value
 144                                               *ucontrol);
 145 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 146                                               struct snd_ctl_elem_value
 147                                               *ucontrol);
 148
 149 /*********************************
 150  * VARIABLES
 151  ********************************/
 152 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 153 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 154 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 155
 156 module_param_array(index, int, NULL, 0444);
 157 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
 158 module_param_array(id, charp, NULL, 0444);
 159 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
 160 module_param_array(enable, bool, NULL, 0444);
 161 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 162
 163 static const struct pci_device_id snd_aw2_ids[] = {
 164         {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
 165          0, 0, 0},
 166         {0}
 167 };
 168
 169 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
 170
 171 /* pci_driver definition */
 172 static struct pci_driver aw2_driver = {
 173         .name = KBUILD_MODNAME,
 174         .id_table = snd_aw2_ids,
 175         .probe = snd_aw2_probe,
 176         .remove = snd_aw2_remove,
 177 };
 178
 179 module_pci_driver(aw2_driver);
 180
 181 /* operators for playback PCM alsa interface */
 182 static struct snd_pcm_ops snd_aw2_playback_ops = {
 183         .open = snd_aw2_pcm_playback_open,
 184         .close = snd_aw2_pcm_playback_close,
 185         .ioctl = snd_pcm_lib_ioctl,
 186         .hw_params = snd_aw2_pcm_hw_params,
 187         .hw_free = snd_aw2_pcm_hw_free,
 188         .prepare = snd_aw2_pcm_prepare_playback,
 189         .trigger = snd_aw2_pcm_trigger_playback,
 190         .pointer = snd_aw2_pcm_pointer_playback,
 191 };
 192
 193 /* operators for capture PCM alsa interface */
 194 static struct snd_pcm_ops snd_aw2_capture_ops = {
 195         .open = snd_aw2_pcm_capture_open,
 196         .close = snd_aw2_pcm_capture_close,
 197         .ioctl = snd_pcm_lib_ioctl,
 198         .hw_params = snd_aw2_pcm_hw_params,
 199         .hw_free = snd_aw2_pcm_hw_free,
 200         .prepare = snd_aw2_pcm_prepare_capture,
 201         .trigger = snd_aw2_pcm_trigger_capture,
 202         .pointer = snd_aw2_pcm_pointer_capture,
 203 };
 204
 205 static struct snd_kcontrol_new aw2_control = {
 206         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 207         .name = "PCM Capture Route",
 208         .index = 0,
 209         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 210         .private_value = 0xffff,
 211         .info = snd_aw2_control_switch_capture_info,
 212         .get = snd_aw2_control_switch_capture_get,
 213         .put = snd_aw2_control_switch_capture_put
 214 };
 215
 216 /*********************************
 217  * FUNCTION IMPLEMENTATIONS
 218  ********************************/
 219
 220 /* component-destructor */
 221 static int snd_aw2_dev_free(struct snd_device *device)
 222 {
 223         struct aw2 *chip = device->device_data;
 224
 225         /* Free hardware */
 226         snd_aw2_saa7146_free(&chip->saa7146);
 227
 228         /* release the irq */
 229         if (chip->irq >= 0)
 230                 free_irq(chip->irq, (void *)chip);
 231         /* release the i/o ports & memory */
 232         if (chip->iobase_virt)
 233                 iounmap(chip->iobase_virt);
 234
 235         pci_release_regions(chip->pci);
 236         /* disable the PCI entry */
 237         pci_disable_device(chip->pci);
 238         /* release the data */
 239         kfree(chip);
 240
 241         return 0;
 242 }
 243
 244 /* chip-specific constructor */
 245 static int snd_aw2_create(struct snd_card *card,
 246                           struct pci_dev *pci, struct aw2 **rchip)
 247 {
 248         struct aw2 *chip;
 249         int err;
 250         static struct snd_device_ops ops = {
 251                 .dev_free = snd_aw2_dev_free,
 252         };
 253
 254         *rchip = NULL;
 255
 256         /* initialize the PCI entry */
 257         err = pci_enable_device(pci);
 258         if (err < 0)
 259                 return err;
 260         pci_set_master(pci);
 261
 262         /* check PCI availability (32bit DMA) */
 263         if ((pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) ||
 264             (pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0)) {
 265                 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
 266                 pci_disable_device(pci);
 267                 return -ENXIO;
 268         }
 269         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 270         if (chip == NULL) {
 271                 pci_disable_device(pci);
 272                 return -ENOMEM;
 273         }
 274
 275         /* initialize the stuff */
 276         chip->card = card;
 277         chip->pci = pci;
 278         chip->irq = -1;
 279
 280         /* (1) PCI resource allocation */
 281         err = pci_request_regions(pci, "Audiowerk2");
 282         if (err < 0) {
 283                 pci_disable_device(pci);
 284                 kfree(chip);
 285                 return err;
 286         }
 287         chip->iobase_phys = pci_resource_start(pci, 0);
 288         chip->iobase_virt =
 289                 ioremap_nocache(chip->iobase_phys,
 290                                 pci_resource_len(pci, 0));
 291
 292         if (chip->iobase_virt == NULL) {
 293                 dev_err(card->dev, "unable to remap memory region");
 294                 pci_release_regions(pci);
 295                 pci_disable_device(pci);
 296                 kfree(chip);
 297                 return -ENOMEM;
 298         }
 299
 300         /* (2) initialization of the chip hardware */
 301         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 302
 303         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 304                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
 305                 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
 306
 307                 iounmap(chip->iobase_virt);
 308                 pci_release_regions(chip->pci);
 309                 pci_disable_device(chip->pci);
 310                 kfree(chip);
 311                 return -EBUSY;
 312         }
 313         chip->irq = pci->irq;
 314
 315         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 316         if (err < 0) {
 317                 free_irq(chip->irq, (void *)chip);
 318                 iounmap(chip->iobase_virt);
 319                 pci_release_regions(chip->pci);
 320                 pci_disable_device(chip->pci);
 321                 kfree(chip);
 322                 return err;
 323         }
 324
 325         *rchip = chip;
 326
 327         dev_info(card->dev,
 328                  "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
 329         return 0;
 330 }
 331
 332 /* constructor */
 333 static int snd_aw2_probe(struct pci_dev *pci,
 334                          const struct pci_device_id *pci_id)
 335 {
 336         static int dev;
 337         struct snd_card *card;
 338         struct aw2 *chip;
 339         int err;
 340
 341         /* (1) Continue if device is not enabled, else inc dev */
 342         if (dev >= SNDRV_CARDS)
 343                 return -ENODEV;
 344         if (!enable[dev]) {
 345                 dev++;
 346                 return -ENOENT;
 347         }
 348
 349         /* (2) Create card instance */
 350         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 351                            0, &card);
 352         if (err < 0)
 353                 return err;
 354
 355         /* (3) Create main component */
 356         err = snd_aw2_create(card, pci, &chip);
 357         if (err < 0) {
 358                 snd_card_free(card);
 359                 return err;
 360         }
 361
 362         /* initialize mutex */
 363         mutex_init(&chip->mtx);
 364         /* init spinlock */
 365         spin_lock_init(&chip->reg_lock);
 366         /* (4) Define driver ID and name string */
 367         strcpy(card->driver, "aw2");
 368         strcpy(card->shortname, "Audiowerk2");
 369
 370         sprintf(card->longname, "%s with SAA7146 irq %i",
 371                 card->shortname, chip->irq);
 372
 373         /* (5) Create other components */
 374         snd_aw2_new_pcm(chip);
 375
 376         /* (6) Register card instance */
 377         err = snd_card_register(card);
 378         if (err < 0) {
 379                 snd_card_free(card);
 380                 return err;
 381         }
 382
 383         /* (7) Set PCI driver data */
 384         pci_set_drvdata(pci, card);
 385
 386         dev++;
 387         return 0;
 388 }
 389
 390 /* destructor */
 391 static void snd_aw2_remove(struct pci_dev *pci)
 392 {
 393         snd_card_free(pci_get_drvdata(pci));
 394 }
 395
 396 /* open callback */
 397 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 398 {
 399         struct snd_pcm_runtime *runtime = substream->runtime;
 400
 401         dev_dbg(substream->pcm->card->dev, "Playback_open\n");
 402         runtime->hw = snd_aw2_playback_hw;
 403         return 0;
 404 }
 405
 406 /* close callback */
 407 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 408 {
 409         return 0;
 410
 411 }
 412
 413 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 414 {
 415         struct snd_pcm_runtime *runtime = substream->runtime;
 416
 417         dev_dbg(substream->pcm->card->dev, "Capture_open\n");
 418         runtime->hw = snd_aw2_capture_hw;
 419         return 0;
 420 }
 421
 422 /* close callback */
 423 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 424 {
 425         /* TODO: something to do ? */
 426         return 0;
 427 }
 428
 429  /* hw_params callback */
 430 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 431                                  struct snd_pcm_hw_params *hw_params)
 432 {
 433         return snd_pcm_lib_malloc_pages(substream,
 434                                         params_buffer_bytes(hw_params));
 435 }
 436
 437 /* hw_free callback */
 438 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 439 {
 440         return snd_pcm_lib_free_pages(substream);
 441 }
 442
 443 /* prepare callback for playback */
 444 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 445 {
 446         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 447         struct aw2 *chip = pcm_device->chip;
 448         struct snd_pcm_runtime *runtime = substream->runtime;
 449         unsigned long period_size, buffer_size;
 450
 451         mutex_lock(&chip->mtx);
 452
 453         period_size = snd_pcm_lib_period_bytes(substream);
 454         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 455
 456         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 457                                           pcm_device->stream_number,
 458                                           runtime->dma_addr, period_size,
 459                                           buffer_size);
 460
 461         /* Define Interrupt callback */
 462         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 463                                                     (snd_aw2_saa7146_it_cb)
 464                                                     snd_pcm_period_elapsed,
 465                                                     (void *)substream);
 466
 467         mutex_unlock(&chip->mtx);
 468
 469         return 0;
 470 }
 471
 472 /* prepare callback for capture */
 473 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 474 {
 475         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 476         struct aw2 *chip = pcm_device->chip;
 477         struct snd_pcm_runtime *runtime = substream->runtime;
 478         unsigned long period_size, buffer_size;
 479
 480         mutex_lock(&chip->mtx);
 481
 482         period_size = snd_pcm_lib_period_bytes(substream);
 483         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 484
 485         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 486                                          pcm_device->stream_number,
 487                                          runtime->dma_addr, period_size,
 488                                          buffer_size);
 489
 490         /* Define Interrupt callback */
 491         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 492                                                    (snd_aw2_saa7146_it_cb)
 493                                                    snd_pcm_period_elapsed,
 494                                                    (void *)substream);
 495
 496         mutex_unlock(&chip->mtx);
 497
 498         return 0;
 499 }
 500
 501 /* playback trigger callback */
 502 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 503                                         int cmd)
 504 {
 505         int status = 0;
 506         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 507         struct aw2 *chip = pcm_device->chip;
 508         spin_lock(&chip->reg_lock);
 509         switch (cmd) {
 510         case SNDRV_PCM_TRIGGER_START:
 511                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 512                                                            pcm_device->
 513                                                            stream_number);
 514                 break;
 515         case SNDRV_PCM_TRIGGER_STOP:
 516                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 517                                                           pcm_device->
 518                                                           stream_number);
 519                 break;
 520         default:
 521                 status = -EINVAL;
 522         }
 523         spin_unlock(&chip->reg_lock);
 524         return status;
 525 }
 526
 527 /* capture trigger callback */
 528 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 529                                        int cmd)
 530 {
 531         int status = 0;
 532         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 533         struct aw2 *chip = pcm_device->chip;
 534         spin_lock(&chip->reg_lock);
 535         switch (cmd) {
 536         case SNDRV_PCM_TRIGGER_START:
 537                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 538                                                           pcm_device->
 539                                                           stream_number);
 540                 break;
 541         case SNDRV_PCM_TRIGGER_STOP:
 542                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 543                                                          pcm_device->
 544                                                          stream_number);
 545                 break;
 546         default:
 547                 status = -EINVAL;
 548         }
 549         spin_unlock(&chip->reg_lock);
 550         return status;
 551 }
 552
 553 /* playback pointer callback */
 554 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 555                                                       *substream)
 556 {
 557         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 558         struct aw2 *chip = pcm_device->chip;
 559         unsigned int current_ptr;
 560
 561         /* get the current hardware pointer */
 562         struct snd_pcm_runtime *runtime = substream->runtime;
 563         current_ptr =
 564                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
 565                                                     pcm_device->stream_number,
 566                                                     runtime->dma_area,
 567                                                     runtime->buffer_size);
 568
 569         return bytes_to_frames(substream->runtime, current_ptr);
 570 }
 571
 572 /* capture pointer callback */
 573 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 574                                                      *substream)
 575 {
 576         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 577         struct aw2 *chip = pcm_device->chip;
 578         unsigned int current_ptr;
 579
 580         /* get the current hardware pointer */
 581         struct snd_pcm_runtime *runtime = substream->runtime;
 582         current_ptr =
 583                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 584                                                    pcm_device->stream_number,
 585                                                    runtime->dma_area,
 586                                                    runtime->buffer_size);
 587
 588         return bytes_to_frames(substream->runtime, current_ptr);
 589 }
 590
 591 /* create a pcm device */
 592 static int snd_aw2_new_pcm(struct aw2 *chip)
 593 {
 594         struct snd_pcm *pcm_playback_ana;
 595         struct snd_pcm *pcm_playback_num;
 596         struct snd_pcm *pcm_capture;
 597         struct aw2_pcm_device *pcm_device;
 598         int err = 0;
 599
 600         /* Create new Alsa PCM device */
 601
 602         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 603                           &pcm_playback_ana);
 604         if (err < 0) {
 605                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 606                 return err;
 607         }
 608
 609         /* Creation ok */
 610         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 611
 612         /* Set PCM device name */
 613         strcpy(pcm_playback_ana->name, "Analog playback");
 614         /* Associate private data to PCM device */
 615         pcm_playback_ana->private_data = pcm_device;
 616         /* set operators of PCM device */
 617         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 618                         &snd_aw2_playback_ops);
 619         /* store PCM device */
 620         pcm_device->pcm = pcm_playback_ana;
 621         /* give base chip pointer to our internal pcm device
 622            structure */
 623         pcm_device->chip = chip;
 624         /* Give stream number to PCM device */
 625         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 626
 627         /* pre-allocation of buffers */
 628         /* Preallocate continuous pages. */
 629         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 630                                                     SNDRV_DMA_TYPE_DEV,
 631                                                     snd_dma_pci_data
 632                                                     (chip->pci),
 633                                                     64 * 1024, 64 * 1024);
 634         if (err)
 635                 dev_err(chip->card->dev,
 636                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 637                         err);
 638
 639         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 640                           &pcm_playback_num);
 641
 642         if (err < 0) {
 643                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 644                 return err;
 645         }
 646         /* Creation ok */
 647         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 648
 649         /* Set PCM device name */
 650         strcpy(pcm_playback_num->name, "Digital playback");
 651         /* Associate private data to PCM device */
 652         pcm_playback_num->private_data = pcm_device;
 653         /* set operators of PCM device */
 654         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 655                         &snd_aw2_playback_ops);
 656         /* store PCM device */
 657         pcm_device->pcm = pcm_playback_num;
 658         /* give base chip pointer to our internal pcm device
 659            structure */
 660         pcm_device->chip = chip;
 661         /* Give stream number to PCM device */
 662         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 663
 664         /* pre-allocation of buffers */
 665         /* Preallocate continuous pages. */
 666         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 667                                                     SNDRV_DMA_TYPE_DEV,
 668                                                     snd_dma_pci_data
 669                                                     (chip->pci),
 670                                                     64 * 1024, 64 * 1024);
 671         if (err)
 672                 dev_err(chip->card->dev,
 673                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 674                         err);
 675
 676         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 677                           &pcm_capture);
 678
 679         if (err < 0) {
 680                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 681                 return err;
 682         }
 683
 684         /* Creation ok */
 685         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 686
 687         /* Set PCM device name */
 688         strcpy(pcm_capture->name, "Capture");
 689         /* Associate private data to PCM device */
 690         pcm_capture->private_data = pcm_device;
 691         /* set operators of PCM device */
 692         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 693                         &snd_aw2_capture_ops);
 694         /* store PCM device */
 695         pcm_device->pcm = pcm_capture;
 696         /* give base chip pointer to our internal pcm device
 697            structure */
 698         pcm_device->chip = chip;
 699         /* Give stream number to PCM device */
 700         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 701
 702         /* pre-allocation of buffers */
 703         /* Preallocate continuous pages. */
 704         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 705                                                     SNDRV_DMA_TYPE_DEV,
 706                                                     snd_dma_pci_data
 707                                                     (chip->pci),
 708                                                     64 * 1024, 64 * 1024);
 709         if (err)
 710                 dev_err(chip->card->dev,
 711                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 712                         err);
 713
 714
 715         /* Create control */
 716         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 717         if (err < 0) {
 718                 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
 719                 return err;
 720         }
 721
 722         return 0;
 723 }
 724
 725 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 726                                                struct snd_ctl_elem_info *uinfo)
 727 {
 728         static char *texts[2] = {
 729                 "Analog", "Digital"
 730         };
 731         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 732         uinfo->count = 1;
 733         uinfo->value.enumerated.items = 2;
 734         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
 735                 uinfo->value.enumerated.item =
 736                     uinfo->value.enumerated.items - 1;
 737         }
 738         strcpy(uinfo->value.enumerated.name,
 739                texts[uinfo->value.enumerated.item]);
 740         return 0;
 741 }
 742
 743 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 744                                               struct snd_ctl_elem_value
 745                                               *ucontrol)
 746 {
 747         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 748         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 749                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 750         else
 751                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 752         return 0;
 753 }
 754
 755 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 756                                               struct snd_ctl_elem_value
 757                                               *ucontrol)
 758 {
 759         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 760         int changed = 0;
 761         int is_disgital =
 762             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 763
 764         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 765              && !is_disgital)
 766             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 767                 && is_disgital)) {
 768                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 769                 changed = 1;
 770         }
 771         return changed;
 772 }