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 const 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 const 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         iounmap(chip->iobase_virt);
 233         pci_release_regions(chip->pci);
 234         /* disable the PCI entry */
 235         pci_disable_device(chip->pci);
 236         /* release the data */
 237         kfree(chip);
 238
 239         return 0;
 240 }
 241
 242 /* chip-specific constructor */
 243 static int snd_aw2_create(struct snd_card *card,
 244                           struct pci_dev *pci, struct aw2 **rchip)
 245 {
 246         struct aw2 *chip;
 247         int err;
 248         static struct snd_device_ops ops = {
 249                 .dev_free = snd_aw2_dev_free,
 250         };
 251
 252         *rchip = NULL;
 253
 254         /* initialize the PCI entry */
 255         err = pci_enable_device(pci);
 256         if (err < 0)
 257                 return err;
 258         pci_set_master(pci);
 259
 260         /* check PCI availability (32bit DMA) */
 261         if ((dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) ||
 262             (dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0)) {
 263                 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
 264                 pci_disable_device(pci);
 265                 return -ENXIO;
 266         }
 267         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 268         if (chip == NULL) {
 269                 pci_disable_device(pci);
 270                 return -ENOMEM;
 271         }
 272
 273         /* initialize the stuff */
 274         chip->card = card;
 275         chip->pci = pci;
 276         chip->irq = -1;
 277
 278         /* (1) PCI resource allocation */
 279         err = pci_request_regions(pci, "Audiowerk2");
 280         if (err < 0) {
 281                 pci_disable_device(pci);
 282                 kfree(chip);
 283                 return err;
 284         }
 285         chip->iobase_phys = pci_resource_start(pci, 0);
 286         chip->iobase_virt =
 287                 ioremap_nocache(chip->iobase_phys,
 288                                 pci_resource_len(pci, 0));
 289
 290         if (chip->iobase_virt == NULL) {
 291                 dev_err(card->dev, "unable to remap memory region");
 292                 pci_release_regions(pci);
 293                 pci_disable_device(pci);
 294                 kfree(chip);
 295                 return -ENOMEM;
 296         }
 297
 298         /* (2) initialization of the chip hardware */
 299         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 300
 301         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 302                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
 303                 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
 304
 305                 iounmap(chip->iobase_virt);
 306                 pci_release_regions(chip->pci);
 307                 pci_disable_device(chip->pci);
 308                 kfree(chip);
 309                 return -EBUSY;
 310         }
 311         chip->irq = pci->irq;
 312
 313         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 314         if (err < 0) {
 315                 free_irq(chip->irq, (void *)chip);
 316                 iounmap(chip->iobase_virt);
 317                 pci_release_regions(chip->pci);
 318                 pci_disable_device(chip->pci);
 319                 kfree(chip);
 320                 return err;
 321         }
 322
 323         *rchip = chip;
 324
 325         dev_info(card->dev,
 326                  "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
 327         return 0;
 328 }
 329
 330 /* constructor */
 331 static int snd_aw2_probe(struct pci_dev *pci,
 332                          const struct pci_device_id *pci_id)
 333 {
 334         static int dev;
 335         struct snd_card *card;
 336         struct aw2 *chip;
 337         int err;
 338
 339         /* (1) Continue if device is not enabled, else inc dev */
 340         if (dev >= SNDRV_CARDS)
 341                 return -ENODEV;
 342         if (!enable[dev]) {
 343                 dev++;
 344                 return -ENOENT;
 345         }
 346
 347         /* (2) Create card instance */
 348         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 349                            0, &card);
 350         if (err < 0)
 351                 return err;
 352
 353         /* (3) Create main component */
 354         err = snd_aw2_create(card, pci, &chip);
 355         if (err < 0) {
 356                 snd_card_free(card);
 357                 return err;
 358         }
 359
 360         /* initialize mutex */
 361         mutex_init(&chip->mtx);
 362         /* init spinlock */
 363         spin_lock_init(&chip->reg_lock);
 364         /* (4) Define driver ID and name string */
 365         strcpy(card->driver, "aw2");
 366         strcpy(card->shortname, "Audiowerk2");
 367
 368         sprintf(card->longname, "%s with SAA7146 irq %i",
 369                 card->shortname, chip->irq);
 370
 371         /* (5) Create other components */
 372         snd_aw2_new_pcm(chip);
 373
 374         /* (6) Register card instance */
 375         err = snd_card_register(card);
 376         if (err < 0) {
 377                 snd_card_free(card);
 378                 return err;
 379         }
 380
 381         /* (7) Set PCI driver data */
 382         pci_set_drvdata(pci, card);
 383
 384         dev++;
 385         return 0;
 386 }
 387
 388 /* destructor */
 389 static void snd_aw2_remove(struct pci_dev *pci)
 390 {
 391         snd_card_free(pci_get_drvdata(pci));
 392 }
 393
 394 /* open callback */
 395 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 396 {
 397         struct snd_pcm_runtime *runtime = substream->runtime;
 398
 399         dev_dbg(substream->pcm->card->dev, "Playback_open\n");
 400         runtime->hw = snd_aw2_playback_hw;
 401         return 0;
 402 }
 403
 404 /* close callback */
 405 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 406 {
 407         return 0;
 408
 409 }
 410
 411 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 412 {
 413         struct snd_pcm_runtime *runtime = substream->runtime;
 414
 415         dev_dbg(substream->pcm->card->dev, "Capture_open\n");
 416         runtime->hw = snd_aw2_capture_hw;
 417         return 0;
 418 }
 419
 420 /* close callback */
 421 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 422 {
 423         /* TODO: something to do ? */
 424         return 0;
 425 }
 426
 427  /* hw_params callback */
 428 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 429                                  struct snd_pcm_hw_params *hw_params)
 430 {
 431         return snd_pcm_lib_malloc_pages(substream,
 432                                         params_buffer_bytes(hw_params));
 433 }
 434
 435 /* hw_free callback */
 436 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 437 {
 438         return snd_pcm_lib_free_pages(substream);
 439 }
 440
 441 /* prepare callback for playback */
 442 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 443 {
 444         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 445         struct aw2 *chip = pcm_device->chip;
 446         struct snd_pcm_runtime *runtime = substream->runtime;
 447         unsigned long period_size, buffer_size;
 448
 449         mutex_lock(&chip->mtx);
 450
 451         period_size = snd_pcm_lib_period_bytes(substream);
 452         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 453
 454         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 455                                           pcm_device->stream_number,
 456                                           runtime->dma_addr, period_size,
 457                                           buffer_size);
 458
 459         /* Define Interrupt callback */
 460         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 461                                                     (snd_aw2_saa7146_it_cb)
 462                                                     snd_pcm_period_elapsed,
 463                                                     (void *)substream);
 464
 465         mutex_unlock(&chip->mtx);
 466
 467         return 0;
 468 }
 469
 470 /* prepare callback for capture */
 471 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 472 {
 473         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 474         struct aw2 *chip = pcm_device->chip;
 475         struct snd_pcm_runtime *runtime = substream->runtime;
 476         unsigned long period_size, buffer_size;
 477
 478         mutex_lock(&chip->mtx);
 479
 480         period_size = snd_pcm_lib_period_bytes(substream);
 481         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 482
 483         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 484                                          pcm_device->stream_number,
 485                                          runtime->dma_addr, period_size,
 486                                          buffer_size);
 487
 488         /* Define Interrupt callback */
 489         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 490                                                    (snd_aw2_saa7146_it_cb)
 491                                                    snd_pcm_period_elapsed,
 492                                                    (void *)substream);
 493
 494         mutex_unlock(&chip->mtx);
 495
 496         return 0;
 497 }
 498
 499 /* playback trigger callback */
 500 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 501                                         int cmd)
 502 {
 503         int status = 0;
 504         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 505         struct aw2 *chip = pcm_device->chip;
 506         spin_lock(&chip->reg_lock);
 507         switch (cmd) {
 508         case SNDRV_PCM_TRIGGER_START:
 509                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 510                                                            pcm_device->
 511                                                            stream_number);
 512                 break;
 513         case SNDRV_PCM_TRIGGER_STOP:
 514                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 515                                                           pcm_device->
 516                                                           stream_number);
 517                 break;
 518         default:
 519                 status = -EINVAL;
 520         }
 521         spin_unlock(&chip->reg_lock);
 522         return status;
 523 }
 524
 525 /* capture trigger callback */
 526 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 527                                        int cmd)
 528 {
 529         int status = 0;
 530         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 531         struct aw2 *chip = pcm_device->chip;
 532         spin_lock(&chip->reg_lock);
 533         switch (cmd) {
 534         case SNDRV_PCM_TRIGGER_START:
 535                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 536                                                           pcm_device->
 537                                                           stream_number);
 538                 break;
 539         case SNDRV_PCM_TRIGGER_STOP:
 540                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 541                                                          pcm_device->
 542                                                          stream_number);
 543                 break;
 544         default:
 545                 status = -EINVAL;
 546         }
 547         spin_unlock(&chip->reg_lock);
 548         return status;
 549 }
 550
 551 /* playback pointer callback */
 552 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 553                                                       *substream)
 554 {
 555         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 556         struct aw2 *chip = pcm_device->chip;
 557         unsigned int current_ptr;
 558
 559         /* get the current hardware pointer */
 560         struct snd_pcm_runtime *runtime = substream->runtime;
 561         current_ptr =
 562                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
 563                                                     pcm_device->stream_number,
 564                                                     runtime->dma_area,
 565                                                     runtime->buffer_size);
 566
 567         return bytes_to_frames(substream->runtime, current_ptr);
 568 }
 569
 570 /* capture pointer callback */
 571 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 572                                                      *substream)
 573 {
 574         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 575         struct aw2 *chip = pcm_device->chip;
 576         unsigned int current_ptr;
 577
 578         /* get the current hardware pointer */
 579         struct snd_pcm_runtime *runtime = substream->runtime;
 580         current_ptr =
 581                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 582                                                    pcm_device->stream_number,
 583                                                    runtime->dma_area,
 584                                                    runtime->buffer_size);
 585
 586         return bytes_to_frames(substream->runtime, current_ptr);
 587 }
 588
 589 /* create a pcm device */
 590 static int snd_aw2_new_pcm(struct aw2 *chip)
 591 {
 592         struct snd_pcm *pcm_playback_ana;
 593         struct snd_pcm *pcm_playback_num;
 594         struct snd_pcm *pcm_capture;
 595         struct aw2_pcm_device *pcm_device;
 596         int err = 0;
 597
 598         /* Create new Alsa PCM device */
 599
 600         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 601                           &pcm_playback_ana);
 602         if (err < 0) {
 603                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 604                 return err;
 605         }
 606
 607         /* Creation ok */
 608         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 609
 610         /* Set PCM device name */
 611         strcpy(pcm_playback_ana->name, "Analog playback");
 612         /* Associate private data to PCM device */
 613         pcm_playback_ana->private_data = pcm_device;
 614         /* set operators of PCM device */
 615         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 616                         &snd_aw2_playback_ops);
 617         /* store PCM device */
 618         pcm_device->pcm = pcm_playback_ana;
 619         /* give base chip pointer to our internal pcm device
 620            structure */
 621         pcm_device->chip = chip;
 622         /* Give stream number to PCM device */
 623         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 624
 625         /* pre-allocation of buffers */
 626         /* Preallocate continuous pages. */
 627         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 628                                                     SNDRV_DMA_TYPE_DEV,
 629                                                     snd_dma_pci_data
 630                                                     (chip->pci),
 631                                                     64 * 1024, 64 * 1024);
 632         if (err)
 633                 dev_err(chip->card->dev,
 634                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 635                         err);
 636
 637         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 638                           &pcm_playback_num);
 639
 640         if (err < 0) {
 641                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 642                 return err;
 643         }
 644         /* Creation ok */
 645         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 646
 647         /* Set PCM device name */
 648         strcpy(pcm_playback_num->name, "Digital playback");
 649         /* Associate private data to PCM device */
 650         pcm_playback_num->private_data = pcm_device;
 651         /* set operators of PCM device */
 652         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 653                         &snd_aw2_playback_ops);
 654         /* store PCM device */
 655         pcm_device->pcm = pcm_playback_num;
 656         /* give base chip pointer to our internal pcm device
 657            structure */
 658         pcm_device->chip = chip;
 659         /* Give stream number to PCM device */
 660         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 661
 662         /* pre-allocation of buffers */
 663         /* Preallocate continuous pages. */
 664         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 665                                                     SNDRV_DMA_TYPE_DEV,
 666                                                     snd_dma_pci_data
 667                                                     (chip->pci),
 668                                                     64 * 1024, 64 * 1024);
 669         if (err)
 670                 dev_err(chip->card->dev,
 671                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 672                         err);
 673
 674         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 675                           &pcm_capture);
 676
 677         if (err < 0) {
 678                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 679                 return err;
 680         }
 681
 682         /* Creation ok */
 683         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 684
 685         /* Set PCM device name */
 686         strcpy(pcm_capture->name, "Capture");
 687         /* Associate private data to PCM device */
 688         pcm_capture->private_data = pcm_device;
 689         /* set operators of PCM device */
 690         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 691                         &snd_aw2_capture_ops);
 692         /* store PCM device */
 693         pcm_device->pcm = pcm_capture;
 694         /* give base chip pointer to our internal pcm device
 695            structure */
 696         pcm_device->chip = chip;
 697         /* Give stream number to PCM device */
 698         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 699
 700         /* pre-allocation of buffers */
 701         /* Preallocate continuous pages. */
 702         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 703                                                     SNDRV_DMA_TYPE_DEV,
 704                                                     snd_dma_pci_data
 705                                                     (chip->pci),
 706                                                     64 * 1024, 64 * 1024);
 707         if (err)
 708                 dev_err(chip->card->dev,
 709                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
 710                         err);
 711
 712
 713         /* Create control */
 714         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 715         if (err < 0) {
 716                 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
 717                 return err;
 718         }
 719
 720         return 0;
 721 }
 722
 723 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 724                                                struct snd_ctl_elem_info *uinfo)
 725 {
 726         static const char * const texts[2] = {
 727                 "Analog", "Digital"
 728         };
 729         return snd_ctl_enum_info(uinfo, 1, 2, texts);
 730 }
 731
 732 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 733                                               struct snd_ctl_elem_value
 734                                               *ucontrol)
 735 {
 736         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 737         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 738                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 739         else
 740                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 741         return 0;
 742 }
 743
 744 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 745                                               struct snd_ctl_elem_value
 746                                               *ucontrol)
 747 {
 748         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 749         int changed = 0;
 750         int is_disgital =
 751             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 752
 753         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 754              && !is_disgital)
 755             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 756                 && is_disgital)) {
 757                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 758                 changed = 1;
 759         }
 760         return changed;
 761 }