err.no Git - linux-2.6/blob - 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 <asm/io.h>
  30 #include <sound/core.h>
  31 #include <sound/initval.h>
  32 #include <sound/pcm.h>
  33 #include <sound/pcm_params.h>
  34 #include <sound/control.h>
  35
  36 #include "saa7146.h"
  37 #include "aw2-saa7146.h"
  38
  39 MODULE_LICENSE("GPL");
  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 PCI_VENDOR_ID_SAA7146             0x1131
  49 #define PCI_DEVICE_ID_SAA7146             0x7146
  50
  51 #define CTL_ROUTE_ANALOG 0
  52 #define CTL_ROUTE_DIGITAL 1
  53
  54 /*********************************
  55  * TYPEDEFS
  56  ********************************/
  57   /* hardware definition */
  58 static struct snd_pcm_hardware snd_aw2_playback_hw = {
  59         .info = (SNDRV_PCM_INFO_MMAP |
  60                  SNDRV_PCM_INFO_INTERLEAVED |
  61                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  62         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  63         .rates = SNDRV_PCM_RATE_44100,
  64         .rate_min = 44100,
  65         .rate_max = 44100,
  66         .channels_min = 2,
  67         .channels_max = 4,
  68         .buffer_bytes_max = 32768,
  69         .period_bytes_min = 4096,
  70         .period_bytes_max = 32768,
  71         .periods_min = 1,
  72         .periods_max = 1024,
  73 };
  74
  75 static struct snd_pcm_hardware snd_aw2_capture_hw = {
  76         .info = (SNDRV_PCM_INFO_MMAP |
  77                  SNDRV_PCM_INFO_INTERLEAVED |
  78                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  79         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  80         .rates = SNDRV_PCM_RATE_44100,
  81         .rate_min = 44100,
  82         .rate_max = 44100,
  83         .channels_min = 2,
  84         .channels_max = 2,
  85         .buffer_bytes_max = 32768,
  86         .period_bytes_min = 4096,
  87         .period_bytes_max = 32768,
  88         .periods_min = 1,
  89         .periods_max = 1024,
  90 };
  91
  92 struct aw2_pcm_device {
  93         struct snd_pcm *pcm;
  94         unsigned int stream_number;
  95         struct aw2 *chip;
  96 };
  97
  98 struct aw2 {
  99         struct snd_aw2_saa7146 saa7146;
 100
 101         struct pci_dev *pci;
 102         int irq;
 103         spinlock_t reg_lock;
 104         struct mutex mtx;
 105
 106         unsigned long iobase_phys;
 107         void __iomem *iobase_virt;
 108
 109         struct snd_card *card;
 110
 111         struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
 112         struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
 113 };
 114
 115 /*********************************
 116  * FUNCTION DECLARATIONS
 117  ********************************/
 118 static int __init alsa_card_aw2_init(void);
 119 static void __exit alsa_card_aw2_exit(void);
 120 static int snd_aw2_dev_free(struct snd_device *device);
 121 static int __devinit snd_aw2_create(struct snd_card *card,
 122                                     struct pci_dev *pci, struct aw2 **rchip);
 123 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 124                                    const struct pci_device_id *pci_id);
 125 static void __devexit snd_aw2_remove(struct pci_dev *pci);
 126 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
 127 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
 128 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
 129 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
 130 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 131                                  struct snd_pcm_hw_params *hw_params);
 132 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
 133 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
 134 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
 135 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 136                                         int cmd);
 137 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 138                                        int cmd);
 139 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 140                                                       *substream);
 141 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 142                                                      *substream);
 143 static int __devinit snd_aw2_new_pcm(struct aw2 *chip);
 144
 145 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 146                                                struct snd_ctl_elem_info *uinfo);
 147 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 148                                               struct snd_ctl_elem_value
 149                                               *ucontrol);
 150 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 151                                               struct snd_ctl_elem_value
 152                                               *ucontrol);
 153
 154 /*********************************
 155  * VARIABLES
 156  ********************************/
 157 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 158 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 159 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 160
 161 module_param_array(index, int, NULL, 0444);
 162 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
 163 module_param_array(id, charp, NULL, 0444);
 164 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
 165 module_param_array(enable, bool, NULL, 0444);
 166 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 167
 168 static struct pci_device_id snd_aw2_ids[] = {
 169         {PCI_VENDOR_ID_SAA7146, PCI_DEVICE_ID_SAA7146, PCI_ANY_ID, PCI_ANY_ID,
 170          0, 0, 0},
 171         {0}
 172 };
 173
 174 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
 175
 176 /* pci_driver definition */
 177 static struct pci_driver driver = {
 178         .name = "Emagic Audiowerk 2",
 179         .id_table = snd_aw2_ids,
 180         .probe = snd_aw2_probe,
 181         .remove = __devexit_p(snd_aw2_remove),
 182 };
 183
 184 /* operators for playback PCM alsa interface */
 185 static struct snd_pcm_ops snd_aw2_playback_ops = {
 186         .open = snd_aw2_pcm_playback_open,
 187         .close = snd_aw2_pcm_playback_close,
 188         .ioctl = snd_pcm_lib_ioctl,
 189         .hw_params = snd_aw2_pcm_hw_params,
 190         .hw_free = snd_aw2_pcm_hw_free,
 191         .prepare = snd_aw2_pcm_prepare_playback,
 192         .trigger = snd_aw2_pcm_trigger_playback,
 193         .pointer = snd_aw2_pcm_pointer_playback,
 194 };
 195
 196 /* operators for capture PCM alsa interface */
 197 static struct snd_pcm_ops snd_aw2_capture_ops = {
 198         .open = snd_aw2_pcm_capture_open,
 199         .close = snd_aw2_pcm_capture_close,
 200         .ioctl = snd_pcm_lib_ioctl,
 201         .hw_params = snd_aw2_pcm_hw_params,
 202         .hw_free = snd_aw2_pcm_hw_free,
 203         .prepare = snd_aw2_pcm_prepare_capture,
 204         .trigger = snd_aw2_pcm_trigger_capture,
 205         .pointer = snd_aw2_pcm_pointer_capture,
 206 };
 207
 208 static struct snd_kcontrol_new aw2_control __devinitdata = {
 209         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 210         .name = "PCM Capture Route",
 211         .index = 0,
 212         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 213         .private_value = 0xffff,
 214         .info = snd_aw2_control_switch_capture_info,
 215         .get = snd_aw2_control_switch_capture_get,
 216         .put = snd_aw2_control_switch_capture_put
 217 };
 218
 219 /*********************************
 220  * FUNCTION IMPLEMENTATIONS
 221  ********************************/
 222
 223 /* initialization of the module */
 224 static int __init alsa_card_aw2_init(void)
 225 {
 226         snd_printdd(KERN_DEBUG "aw2: Load aw2 module\n");
 227         return pci_register_driver(&driver);
 228 }
 229
 230 /* clean up the module */
 231 static void __exit alsa_card_aw2_exit(void)
 232 {
 233         snd_printdd(KERN_DEBUG "aw2: Unload aw2 module\n");
 234         pci_unregister_driver(&driver);
 235 }
 236
 237 module_init(alsa_card_aw2_init);
 238 module_exit(alsa_card_aw2_exit);
 239
 240 /* component-destructor */
 241 static int snd_aw2_dev_free(struct snd_device *device)
 242 {
 243         struct aw2 *chip = device->device_data;
 244
 245         /* Free hardware */
 246         snd_aw2_saa7146_free(&chip->saa7146);
 247
 248         /* release the irq */
 249         if (chip->irq >= 0)
 250                 free_irq(chip->irq, (void *)chip);
 251         /* release the i/o ports & memory */
 252         if (chip->iobase_virt)
 253                 iounmap(chip->iobase_virt);
 254
 255         pci_release_regions(chip->pci);
 256         /* disable the PCI entry */
 257         pci_disable_device(chip->pci);
 258         /* release the data */
 259         kfree(chip);
 260
 261         return 0;
 262 }
 263
 264 /* chip-specific constructor */
 265 static int __devinit snd_aw2_create(struct snd_card *card,
 266                                     struct pci_dev *pci, struct aw2 **rchip)
 267 {
 268         struct aw2 *chip;
 269         int err;
 270         static struct snd_device_ops ops = {
 271                 .dev_free = snd_aw2_dev_free,
 272         };
 273
 274         *rchip = NULL;
 275
 276         /* initialize the PCI entry */
 277         err = pci_enable_device(pci);
 278         if (err < 0)
 279                 return err;
 280         pci_set_master(pci);
 281
 282         /* check PCI availability (32bit DMA) */
 283         if ((pci_set_dma_mask(pci, DMA_32BIT_MASK) < 0) ||
 284             (pci_set_consistent_dma_mask(pci, DMA_32BIT_MASK) < 0)) {
 285                 printk(KERN_ERR "aw2: Impossible to set 32bit mask DMA\n");
 286                 pci_disable_device(pci);
 287                 return -ENXIO;
 288         }
 289         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 290         if (chip == NULL) {
 291                 pci_disable_device(pci);
 292                 return -ENOMEM;
 293         }
 294
 295         /* initialize the stuff */
 296         chip->card = card;
 297         chip->pci = pci;
 298         chip->irq = -1;
 299
 300         /* (1) PCI resource allocation */
 301         err = pci_request_regions(pci, "Audiowerk2");
 302         if (err < 0) {
 303                 pci_disable_device(pci);
 304                 kfree(chip);
 305                 return err;
 306         }
 307         chip->iobase_phys = pci_resource_start(pci, 0);
 308         chip->iobase_virt =
 309                 ioremap_nocache(chip->iobase_phys,
 310                                 pci_resource_len(pci, 0));
 311
 312         if (chip->iobase_virt == NULL) {
 313                 printk(KERN_ERR "aw2: unable to remap memory region");
 314                 pci_release_regions(pci);
 315                 pci_disable_device(pci);
 316                 kfree(chip);
 317                 return -ENOMEM;
 318         }
 319
 320
 321         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 322                         IRQF_SHARED, "Audiowerk2", chip)) {
 323                 printk(KERN_ERR "aw2: Cannot grab irq %d\n", pci->irq);
 324
 325                 iounmap(chip->iobase_virt);
 326                 pci_release_regions(chip->pci);
 327                 pci_disable_device(chip->pci);
 328                 kfree(chip);
 329                 return -EBUSY;
 330         }
 331         chip->irq = pci->irq;
 332
 333         /* (2) initialization of the chip hardware */
 334         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 335         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 336         if (err < 0) {
 337                 free_irq(chip->irq, (void *)chip);
 338                 iounmap(chip->iobase_virt);
 339                 pci_release_regions(chip->pci);
 340                 pci_disable_device(chip->pci);
 341                 kfree(chip);
 342                 return err;
 343         }
 344
 345         snd_card_set_dev(card, &pci->dev);
 346         *rchip = chip;
 347
 348         printk(KERN_INFO
 349                "Audiowerk 2 sound card (saa7146 chipset) detected and "
 350                "managed\n");
 351         return 0;
 352 }
 353
 354 /* constructor */
 355 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 356                                    const struct pci_device_id *pci_id)
 357 {
 358         static int dev;
 359         struct snd_card *card;
 360         struct aw2 *chip;
 361         int err;
 362
 363         /* (1) Continue if device is not enabled, else inc dev */
 364         if (dev >= SNDRV_CARDS)
 365                 return -ENODEV;
 366         if (!enable[dev]) {
 367                 dev++;
 368                 return -ENOENT;
 369         }
 370
 371         /* (2) Create card instance */
 372         card = snd_card_new(index[dev], id[dev], THIS_MODULE, 0);
 373         if (card == NULL)
 374                 return -ENOMEM;
 375
 376         /* (3) Create main component */
 377         err = snd_aw2_create(card, pci, &chip);
 378         if (err < 0) {
 379                 snd_card_free(card);
 380                 return err;
 381         }
 382
 383         /* initialize mutex */
 384         mutex_init(&chip->mtx);
 385         /* init spinlock */
 386         spin_lock_init(&chip->reg_lock);
 387         /* (4) Define driver ID and name string */
 388         strcpy(card->driver, "aw2");
 389         strcpy(card->shortname, "Audiowerk2");
 390
 391         sprintf(card->longname, "%s with SAA7146 irq %i",
 392                 card->shortname, chip->irq);
 393
 394         /* (5) Create other components */
 395         snd_aw2_new_pcm(chip);
 396
 397         /* (6) Register card instance */
 398         err = snd_card_register(card);
 399         if (err < 0) {
 400                 snd_card_free(card);
 401                 return err;
 402         }
 403
 404         /* (7) Set PCI driver data */
 405         pci_set_drvdata(pci, card);
 406
 407         dev++;
 408         return 0;
 409 }
 410
 411 /* destructor */
 412 static void __devexit snd_aw2_remove(struct pci_dev *pci)
 413 {
 414         snd_card_free(pci_get_drvdata(pci));
 415         pci_set_drvdata(pci, NULL);
 416 }
 417
 418 /* open callback */
 419 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 420 {
 421         struct snd_pcm_runtime *runtime = substream->runtime;
 422
 423         snd_printdd(KERN_DEBUG "aw2: Playback_open \n");
 424         runtime->hw = snd_aw2_playback_hw;
 425         return 0;
 426 }
 427
 428 /* close callback */
 429 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 430 {
 431         return 0;
 432
 433 }
 434
 435 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 436 {
 437         struct snd_pcm_runtime *runtime = substream->runtime;
 438
 439         snd_printdd(KERN_DEBUG "aw2: Capture_open \n");
 440         runtime->hw = snd_aw2_capture_hw;
 441         return 0;
 442 }
 443
 444 /* close callback */
 445 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 446 {
 447         /* TODO: something to do ? */
 448         return 0;
 449 }
 450
 451  /* hw_params callback */
 452 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 453                                  struct snd_pcm_hw_params *hw_params)
 454 {
 455         return snd_pcm_lib_malloc_pages(substream,
 456                                         params_buffer_bytes(hw_params));
 457 }
 458
 459 /* hw_free callback */
 460 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 461 {
 462         return snd_pcm_lib_free_pages(substream);
 463 }
 464
 465 /* prepare callback for playback */
 466 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 467 {
 468         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 469         struct aw2 *chip = pcm_device->chip;
 470         struct snd_pcm_runtime *runtime = substream->runtime;
 471         unsigned long period_size, buffer_size;
 472
 473         mutex_lock(&chip->mtx);
 474
 475         period_size = snd_pcm_lib_period_bytes(substream);
 476         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 477
 478         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 479                                           pcm_device->stream_number,
 480                                           runtime->dma_addr, period_size,
 481                                           buffer_size);
 482
 483         /* Define Interrupt callback */
 484         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 485                                                     (snd_aw2_saa7146_it_cb)
 486                                                     snd_pcm_period_elapsed,
 487                                                     (void *)substream);
 488
 489         mutex_unlock(&chip->mtx);
 490
 491         return 0;
 492 }
 493
 494 /* prepare callback for capture */
 495 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 496 {
 497         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 498         struct aw2 *chip = pcm_device->chip;
 499         struct snd_pcm_runtime *runtime = substream->runtime;
 500         unsigned long period_size, buffer_size;
 501
 502         mutex_lock(&chip->mtx);
 503
 504         period_size = snd_pcm_lib_period_bytes(substream);
 505         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 506
 507         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 508                                          pcm_device->stream_number,
 509                                          runtime->dma_addr, period_size,
 510                                          buffer_size);
 511
 512         /* Define Interrupt callback */
 513         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 514                                                    (snd_aw2_saa7146_it_cb)
 515                                                    snd_pcm_period_elapsed,
 516                                                    (void *)substream);
 517
 518         mutex_unlock(&chip->mtx);
 519
 520         return 0;
 521 }
 522
 523 /* playback trigger callback */
 524 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 525                                         int cmd)
 526 {
 527         int status = 0;
 528         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 529         struct aw2 *chip = pcm_device->chip;
 530         spin_lock(&chip->reg_lock);
 531         switch (cmd) {
 532         case SNDRV_PCM_TRIGGER_START:
 533                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 534                                                            pcm_device->
 535                                                            stream_number);
 536                 break;
 537         case SNDRV_PCM_TRIGGER_STOP:
 538                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 539                                                           pcm_device->
 540                                                           stream_number);
 541                 break;
 542         default:
 543                 status = -EINVAL;
 544         }
 545         spin_unlock(&chip->reg_lock);
 546         return status;
 547 }
 548
 549 /* capture trigger callback */
 550 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 551                                        int cmd)
 552 {
 553         int status = 0;
 554         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 555         struct aw2 *chip = pcm_device->chip;
 556         spin_lock(&chip->reg_lock);
 557         switch (cmd) {
 558         case SNDRV_PCM_TRIGGER_START:
 559                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 560                                                           pcm_device->
 561                                                           stream_number);
 562                 break;
 563         case SNDRV_PCM_TRIGGER_STOP:
 564                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 565                                                          pcm_device->
 566                                                          stream_number);
 567                 break;
 568         default:
 569                 status = -EINVAL;
 570         }
 571         spin_unlock(&chip->reg_lock);
 572         return status;
 573 }
 574
 575 /* playback pointer callback */
 576 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 577                                                       *substream)
 578 {
 579         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 580         struct aw2 *chip = pcm_device->chip;
 581         unsigned int current_ptr;
 582
 583         /* get the current hardware pointer */
 584         struct snd_pcm_runtime *runtime = substream->runtime;
 585         current_ptr =
 586                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
 587                                                     pcm_device->stream_number,
 588                                                     runtime->dma_area,
 589                                                     runtime->buffer_size);
 590
 591         return bytes_to_frames(substream->runtime, current_ptr);
 592 }
 593
 594 /* capture pointer callback */
 595 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 596                                                      *substream)
 597 {
 598         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 599         struct aw2 *chip = pcm_device->chip;
 600         unsigned int current_ptr;
 601
 602         /* get the current hardware pointer */
 603         struct snd_pcm_runtime *runtime = substream->runtime;
 604         current_ptr =
 605                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 606                                                    pcm_device->stream_number,
 607                                                    runtime->dma_area,
 608                                                    runtime->buffer_size);
 609
 610         return bytes_to_frames(substream->runtime, current_ptr);
 611 }
 612
 613 /* create a pcm device */
 614 static int __devinit snd_aw2_new_pcm(struct aw2 *chip)
 615 {
 616         struct snd_pcm *pcm_playback_ana;
 617         struct snd_pcm *pcm_playback_num;
 618         struct snd_pcm *pcm_capture;
 619         struct aw2_pcm_device *pcm_device;
 620         int err = 0;
 621
 622         /* Create new Alsa PCM device */
 623
 624         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 625                           &pcm_playback_ana);
 626         if (err < 0) {
 627                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 628                 return err;
 629         }
 630
 631         /* Creation ok */
 632         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 633
 634         /* Set PCM device name */
 635         strcpy(pcm_playback_ana->name, "Analog playback");
 636         /* Associate private data to PCM device */
 637         pcm_playback_ana->private_data = pcm_device;
 638         /* set operators of PCM device */
 639         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 640                         &snd_aw2_playback_ops);
 641         /* store PCM device */
 642         pcm_device->pcm = pcm_playback_ana;
 643         /* give base chip pointer to our internal pcm device
 644            structure */
 645         pcm_device->chip = chip;
 646         /* Give stream number to PCM device */
 647         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 648
 649         /* pre-allocation of buffers */
 650         /* Preallocate continuous pages. */
 651         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 652                                                     SNDRV_DMA_TYPE_DEV,
 653                                                     snd_dma_pci_data
 654                                                     (chip->pci),
 655                                                     64 * 1024, 64 * 1024);
 656         if (err)
 657                 printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
 658                        "error (0x%X)\n", err);
 659
 660         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 661                           &pcm_playback_num);
 662
 663         if (err < 0) {
 664                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 665                 return err;
 666         }
 667         /* Creation ok */
 668         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 669
 670         /* Set PCM device name */
 671         strcpy(pcm_playback_num->name, "Digital playback");
 672         /* Associate private data to PCM device */
 673         pcm_playback_num->private_data = pcm_device;
 674         /* set operators of PCM device */
 675         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 676                         &snd_aw2_playback_ops);
 677         /* store PCM device */
 678         pcm_device->pcm = pcm_playback_num;
 679         /* give base chip pointer to our internal pcm device
 680            structure */
 681         pcm_device->chip = chip;
 682         /* Give stream number to PCM device */
 683         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 684
 685         /* pre-allocation of buffers */
 686         /* Preallocate continuous pages. */
 687         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 688                                                     SNDRV_DMA_TYPE_DEV,
 689                                                     snd_dma_pci_data
 690                                                     (chip->pci),
 691                                                     64 * 1024, 64 * 1024);
 692         if (err)
 693                 printk(KERN_ERR
 694                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 695                        "(0x%X)\n", err);
 696
 697
 698
 699         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 700                           &pcm_capture);
 701
 702         if (err < 0) {
 703                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 704                 return err;
 705         }
 706
 707         /* Creation ok */
 708         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 709
 710         /* Set PCM device name */
 711         strcpy(pcm_capture->name, "Capture");
 712         /* Associate private data to PCM device */
 713         pcm_capture->private_data = pcm_device;
 714         /* set operators of PCM device */
 715         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 716                         &snd_aw2_capture_ops);
 717         /* store PCM device */
 718         pcm_device->pcm = pcm_capture;
 719         /* give base chip pointer to our internal pcm device
 720            structure */
 721         pcm_device->chip = chip;
 722         /* Give stream number to PCM device */
 723         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 724
 725         /* pre-allocation of buffers */
 726         /* Preallocate continuous pages. */
 727         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 728                                                     SNDRV_DMA_TYPE_DEV,
 729                                                     snd_dma_pci_data
 730                                                     (chip->pci),
 731                                                     64 * 1024, 64 * 1024);
 732         if (err)
 733                 printk(KERN_ERR
 734                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 735                        "(0x%X)\n", err);
 736
 737
 738         /* Create control */
 739         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 740         if (err < 0) {
 741                 printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
 742                 return err;
 743         }
 744
 745         return 0;
 746 }
 747
 748 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 749                                                struct snd_ctl_elem_info *uinfo)
 750 {
 751         static char *texts[2] = {
 752                 "Analog", "Digital"
 753         };
 754         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 755         uinfo->count = 1;
 756         uinfo->value.enumerated.items = 2;
 757         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
 758                 uinfo->value.enumerated.item =
 759                     uinfo->value.enumerated.items - 1;
 760         }
 761         strcpy(uinfo->value.enumerated.name,
 762                texts[uinfo->value.enumerated.item]);
 763         return 0;
 764 }
 765
 766 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 767                                               struct snd_ctl_elem_value
 768                                               *ucontrol)
 769 {
 770         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 771         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 772                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 773         else
 774                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 775         return 0;
 776 }
 777
 778 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 779                                               struct snd_ctl_elem_value
 780                                               *ucontrol)
 781 {
 782         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 783         int changed = 0;
 784         int is_disgital =
 785             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 786
 787         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 788              && !is_disgital)
 789             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 790                 && is_disgital)) {
 791                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 792                 changed = 1;
 793         }
 794         return changed;
 795 }