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 __init alsa_card_aw2_init(void);
 116 static void __exit alsa_card_aw2_exit(void);
 117 static int snd_aw2_dev_free(struct snd_device *device);
 118 static int __devinit snd_aw2_create(struct snd_card *card,
 119                                     struct pci_dev *pci, struct aw2 **rchip);
 120 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 121                                    const struct pci_device_id *pci_id);
 122 static void __devexit snd_aw2_remove(struct pci_dev *pci);
 123 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
 124 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
 125 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
 126 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
 127 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 128                                  struct snd_pcm_hw_params *hw_params);
 129 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
 130 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
 131 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
 132 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 133                                         int cmd);
 134 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 135                                        int cmd);
 136 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 137                                                       *substream);
 138 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 139                                                      *substream);
 140 static int __devinit snd_aw2_new_pcm(struct aw2 *chip);
 141
 142 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 143                                                struct snd_ctl_elem_info *uinfo);
 144 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 145                                               struct snd_ctl_elem_value
 146                                               *ucontrol);
 147 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 148                                               struct snd_ctl_elem_value
 149                                               *ucontrol);
 150
 151 /*********************************
 152  * VARIABLES
 153  ********************************/
 154 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 155 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 156 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 157
 158 module_param_array(index, int, NULL, 0444);
 159 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
 160 module_param_array(id, charp, NULL, 0444);
 161 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
 162 module_param_array(enable, bool, NULL, 0444);
 163 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 164
 165 static DEFINE_PCI_DEVICE_TABLE(snd_aw2_ids) = {
 166         {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
 167          0, 0, 0},
 168         {0}
 169 };
 170
 171 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
 172
 173 /* pci_driver definition */
 174 static struct pci_driver driver = {
 175         .name = KBUILD_MODNAME,
 176         .id_table = snd_aw2_ids,
 177         .probe = snd_aw2_probe,
 178         .remove = __devexit_p(snd_aw2_remove),
 179 };
 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 __devinitdata = {
 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 /* initialization of the module */
 221 static int __init alsa_card_aw2_init(void)
 222 {
 223         snd_printdd(KERN_DEBUG "aw2: Load aw2 module\n");
 224         return pci_register_driver(&driver);
 225 }
 226
 227 /* clean up the module */
 228 static void __exit alsa_card_aw2_exit(void)
 229 {
 230         snd_printdd(KERN_DEBUG "aw2: Unload aw2 module\n");
 231         pci_unregister_driver(&driver);
 232 }
 233
 234 module_init(alsa_card_aw2_init);
 235 module_exit(alsa_card_aw2_exit);
 236
 237 /* component-destructor */
 238 static int snd_aw2_dev_free(struct snd_device *device)
 239 {
 240         struct aw2 *chip = device->device_data;
 241
 242         /* Free hardware */
 243         snd_aw2_saa7146_free(&chip->saa7146);
 244
 245         /* release the irq */
 246         if (chip->irq >= 0)
 247                 free_irq(chip->irq, (void *)chip);
 248         /* release the i/o ports & memory */
 249         if (chip->iobase_virt)
 250                 iounmap(chip->iobase_virt);
 251
 252         pci_release_regions(chip->pci);
 253         /* disable the PCI entry */
 254         pci_disable_device(chip->pci);
 255         /* release the data */
 256         kfree(chip);
 257
 258         return 0;
 259 }
 260
 261 /* chip-specific constructor */
 262 static int __devinit snd_aw2_create(struct snd_card *card,
 263                                     struct pci_dev *pci, struct aw2 **rchip)
 264 {
 265         struct aw2 *chip;
 266         int err;
 267         static struct snd_device_ops ops = {
 268                 .dev_free = snd_aw2_dev_free,
 269         };
 270
 271         *rchip = NULL;
 272
 273         /* initialize the PCI entry */
 274         err = pci_enable_device(pci);
 275         if (err < 0)
 276                 return err;
 277         pci_set_master(pci);
 278
 279         /* check PCI availability (32bit DMA) */
 280         if ((pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) ||
 281             (pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0)) {
 282                 printk(KERN_ERR "aw2: Impossible to set 32bit mask DMA\n");
 283                 pci_disable_device(pci);
 284                 return -ENXIO;
 285         }
 286         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 287         if (chip == NULL) {
 288                 pci_disable_device(pci);
 289                 return -ENOMEM;
 290         }
 291
 292         /* initialize the stuff */
 293         chip->card = card;
 294         chip->pci = pci;
 295         chip->irq = -1;
 296
 297         /* (1) PCI resource allocation */
 298         err = pci_request_regions(pci, "Audiowerk2");
 299         if (err < 0) {
 300                 pci_disable_device(pci);
 301                 kfree(chip);
 302                 return err;
 303         }
 304         chip->iobase_phys = pci_resource_start(pci, 0);
 305         chip->iobase_virt =
 306                 ioremap_nocache(chip->iobase_phys,
 307                                 pci_resource_len(pci, 0));
 308
 309         if (chip->iobase_virt == NULL) {
 310                 printk(KERN_ERR "aw2: unable to remap memory region");
 311                 pci_release_regions(pci);
 312                 pci_disable_device(pci);
 313                 kfree(chip);
 314                 return -ENOMEM;
 315         }
 316
 317         /* (2) initialization of the chip hardware */
 318         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 319
 320         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 321                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
 322                 printk(KERN_ERR "aw2: Cannot grab irq %d\n", pci->irq);
 323
 324                 iounmap(chip->iobase_virt);
 325                 pci_release_regions(chip->pci);
 326                 pci_disable_device(chip->pci);
 327                 kfree(chip);
 328                 return -EBUSY;
 329         }
 330         chip->irq = pci->irq;
 331
 332         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 333         if (err < 0) {
 334                 free_irq(chip->irq, (void *)chip);
 335                 iounmap(chip->iobase_virt);
 336                 pci_release_regions(chip->pci);
 337                 pci_disable_device(chip->pci);
 338                 kfree(chip);
 339                 return err;
 340         }
 341
 342         snd_card_set_dev(card, &pci->dev);
 343         *rchip = chip;
 344
 345         printk(KERN_INFO
 346                "Audiowerk 2 sound card (saa7146 chipset) detected and "
 347                "managed\n");
 348         return 0;
 349 }
 350
 351 /* constructor */
 352 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 353                                    const struct pci_device_id *pci_id)
 354 {
 355         static int dev;
 356         struct snd_card *card;
 357         struct aw2 *chip;
 358         int err;
 359
 360         /* (1) Continue if device is not enabled, else inc dev */
 361         if (dev >= SNDRV_CARDS)
 362                 return -ENODEV;
 363         if (!enable[dev]) {
 364                 dev++;
 365                 return -ENOENT;
 366         }
 367
 368         /* (2) Create card instance */
 369         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 370         if (err < 0)
 371                 return err;
 372
 373         /* (3) Create main component */
 374         err = snd_aw2_create(card, pci, &chip);
 375         if (err < 0) {
 376                 snd_card_free(card);
 377                 return err;
 378         }
 379
 380         /* initialize mutex */
 381         mutex_init(&chip->mtx);
 382         /* init spinlock */
 383         spin_lock_init(&chip->reg_lock);
 384         /* (4) Define driver ID and name string */
 385         strcpy(card->driver, "aw2");
 386         strcpy(card->shortname, "Audiowerk2");
 387
 388         sprintf(card->longname, "%s with SAA7146 irq %i",
 389                 card->shortname, chip->irq);
 390
 391         /* (5) Create other components */
 392         snd_aw2_new_pcm(chip);
 393
 394         /* (6) Register card instance */
 395         err = snd_card_register(card);
 396         if (err < 0) {
 397                 snd_card_free(card);
 398                 return err;
 399         }
 400
 401         /* (7) Set PCI driver data */
 402         pci_set_drvdata(pci, card);
 403
 404         dev++;
 405         return 0;
 406 }
 407
 408 /* destructor */
 409 static void __devexit snd_aw2_remove(struct pci_dev *pci)
 410 {
 411         snd_card_free(pci_get_drvdata(pci));
 412         pci_set_drvdata(pci, NULL);
 413 }
 414
 415 /* open callback */
 416 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 417 {
 418         struct snd_pcm_runtime *runtime = substream->runtime;
 419
 420         snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
 421         runtime->hw = snd_aw2_playback_hw;
 422         return 0;
 423 }
 424
 425 /* close callback */
 426 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 427 {
 428         return 0;
 429
 430 }
 431
 432 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 433 {
 434         struct snd_pcm_runtime *runtime = substream->runtime;
 435
 436         snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
 437         runtime->hw = snd_aw2_capture_hw;
 438         return 0;
 439 }
 440
 441 /* close callback */
 442 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 443 {
 444         /* TODO: something to do ? */
 445         return 0;
 446 }
 447
 448  /* hw_params callback */
 449 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 450                                  struct snd_pcm_hw_params *hw_params)
 451 {
 452         return snd_pcm_lib_malloc_pages(substream,
 453                                         params_buffer_bytes(hw_params));
 454 }
 455
 456 /* hw_free callback */
 457 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 458 {
 459         return snd_pcm_lib_free_pages(substream);
 460 }
 461
 462 /* prepare callback for playback */
 463 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 464 {
 465         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 466         struct aw2 *chip = pcm_device->chip;
 467         struct snd_pcm_runtime *runtime = substream->runtime;
 468         unsigned long period_size, buffer_size;
 469
 470         mutex_lock(&chip->mtx);
 471
 472         period_size = snd_pcm_lib_period_bytes(substream);
 473         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 474
 475         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 476                                           pcm_device->stream_number,
 477                                           runtime->dma_addr, period_size,
 478                                           buffer_size);
 479
 480         /* Define Interrupt callback */
 481         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 482                                                     (snd_aw2_saa7146_it_cb)
 483                                                     snd_pcm_period_elapsed,
 484                                                     (void *)substream);
 485
 486         mutex_unlock(&chip->mtx);
 487
 488         return 0;
 489 }
 490
 491 /* prepare callback for capture */
 492 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 493 {
 494         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 495         struct aw2 *chip = pcm_device->chip;
 496         struct snd_pcm_runtime *runtime = substream->runtime;
 497         unsigned long period_size, buffer_size;
 498
 499         mutex_lock(&chip->mtx);
 500
 501         period_size = snd_pcm_lib_period_bytes(substream);
 502         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 503
 504         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 505                                          pcm_device->stream_number,
 506                                          runtime->dma_addr, period_size,
 507                                          buffer_size);
 508
 509         /* Define Interrupt callback */
 510         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 511                                                    (snd_aw2_saa7146_it_cb)
 512                                                    snd_pcm_period_elapsed,
 513                                                    (void *)substream);
 514
 515         mutex_unlock(&chip->mtx);
 516
 517         return 0;
 518 }
 519
 520 /* playback trigger callback */
 521 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 522                                         int cmd)
 523 {
 524         int status = 0;
 525         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 526         struct aw2 *chip = pcm_device->chip;
 527         spin_lock(&chip->reg_lock);
 528         switch (cmd) {
 529         case SNDRV_PCM_TRIGGER_START:
 530                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 531                                                            pcm_device->
 532                                                            stream_number);
 533                 break;
 534         case SNDRV_PCM_TRIGGER_STOP:
 535                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 536                                                           pcm_device->
 537                                                           stream_number);
 538                 break;
 539         default:
 540                 status = -EINVAL;
 541         }
 542         spin_unlock(&chip->reg_lock);
 543         return status;
 544 }
 545
 546 /* capture trigger callback */
 547 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 548                                        int cmd)
 549 {
 550         int status = 0;
 551         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 552         struct aw2 *chip = pcm_device->chip;
 553         spin_lock(&chip->reg_lock);
 554         switch (cmd) {
 555         case SNDRV_PCM_TRIGGER_START:
 556                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 557                                                           pcm_device->
 558                                                           stream_number);
 559                 break;
 560         case SNDRV_PCM_TRIGGER_STOP:
 561                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 562                                                          pcm_device->
 563                                                          stream_number);
 564                 break;
 565         default:
 566                 status = -EINVAL;
 567         }
 568         spin_unlock(&chip->reg_lock);
 569         return status;
 570 }
 571
 572 /* playback pointer callback */
 573 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(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_playback(&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 /* capture pointer callback */
 592 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 593                                                      *substream)
 594 {
 595         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 596         struct aw2 *chip = pcm_device->chip;
 597         unsigned int current_ptr;
 598
 599         /* get the current hardware pointer */
 600         struct snd_pcm_runtime *runtime = substream->runtime;
 601         current_ptr =
 602                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 603                                                    pcm_device->stream_number,
 604                                                    runtime->dma_area,
 605                                                    runtime->buffer_size);
 606
 607         return bytes_to_frames(substream->runtime, current_ptr);
 608 }
 609
 610 /* create a pcm device */
 611 static int __devinit snd_aw2_new_pcm(struct aw2 *chip)
 612 {
 613         struct snd_pcm *pcm_playback_ana;
 614         struct snd_pcm *pcm_playback_num;
 615         struct snd_pcm *pcm_capture;
 616         struct aw2_pcm_device *pcm_device;
 617         int err = 0;
 618
 619         /* Create new Alsa PCM device */
 620
 621         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 622                           &pcm_playback_ana);
 623         if (err < 0) {
 624                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 625                 return err;
 626         }
 627
 628         /* Creation ok */
 629         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 630
 631         /* Set PCM device name */
 632         strcpy(pcm_playback_ana->name, "Analog playback");
 633         /* Associate private data to PCM device */
 634         pcm_playback_ana->private_data = pcm_device;
 635         /* set operators of PCM device */
 636         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 637                         &snd_aw2_playback_ops);
 638         /* store PCM device */
 639         pcm_device->pcm = pcm_playback_ana;
 640         /* give base chip pointer to our internal pcm device
 641            structure */
 642         pcm_device->chip = chip;
 643         /* Give stream number to PCM device */
 644         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 645
 646         /* pre-allocation of buffers */
 647         /* Preallocate continuous pages. */
 648         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 649                                                     SNDRV_DMA_TYPE_DEV,
 650                                                     snd_dma_pci_data
 651                                                     (chip->pci),
 652                                                     64 * 1024, 64 * 1024);
 653         if (err)
 654                 printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
 655                        "error (0x%X)\n", err);
 656
 657         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 658                           &pcm_playback_num);
 659
 660         if (err < 0) {
 661                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 662                 return err;
 663         }
 664         /* Creation ok */
 665         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 666
 667         /* Set PCM device name */
 668         strcpy(pcm_playback_num->name, "Digital playback");
 669         /* Associate private data to PCM device */
 670         pcm_playback_num->private_data = pcm_device;
 671         /* set operators of PCM device */
 672         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 673                         &snd_aw2_playback_ops);
 674         /* store PCM device */
 675         pcm_device->pcm = pcm_playback_num;
 676         /* give base chip pointer to our internal pcm device
 677            structure */
 678         pcm_device->chip = chip;
 679         /* Give stream number to PCM device */
 680         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 681
 682         /* pre-allocation of buffers */
 683         /* Preallocate continuous pages. */
 684         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 685                                                     SNDRV_DMA_TYPE_DEV,
 686                                                     snd_dma_pci_data
 687                                                     (chip->pci),
 688                                                     64 * 1024, 64 * 1024);
 689         if (err)
 690                 printk(KERN_ERR
 691                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 692                        "(0x%X)\n", err);
 693
 694
 695
 696         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 697                           &pcm_capture);
 698
 699         if (err < 0) {
 700                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 701                 return err;
 702         }
 703
 704         /* Creation ok */
 705         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 706
 707         /* Set PCM device name */
 708         strcpy(pcm_capture->name, "Capture");
 709         /* Associate private data to PCM device */
 710         pcm_capture->private_data = pcm_device;
 711         /* set operators of PCM device */
 712         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 713                         &snd_aw2_capture_ops);
 714         /* store PCM device */
 715         pcm_device->pcm = pcm_capture;
 716         /* give base chip pointer to our internal pcm device
 717            structure */
 718         pcm_device->chip = chip;
 719         /* Give stream number to PCM device */
 720         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 721
 722         /* pre-allocation of buffers */
 723         /* Preallocate continuous pages. */
 724         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 725                                                     SNDRV_DMA_TYPE_DEV,
 726                                                     snd_dma_pci_data
 727                                                     (chip->pci),
 728                                                     64 * 1024, 64 * 1024);
 729         if (err)
 730                 printk(KERN_ERR
 731                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 732                        "(0x%X)\n", err);
 733
 734
 735         /* Create control */
 736         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 737         if (err < 0) {
 738                 printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
 739                 return err;
 740         }
 741
 742         return 0;
 743 }
 744
 745 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 746                                                struct snd_ctl_elem_info *uinfo)
 747 {
 748         static char *texts[2] = {
 749                 "Analog", "Digital"
 750         };
 751         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 752         uinfo->count = 1;
 753         uinfo->value.enumerated.items = 2;
 754         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
 755                 uinfo->value.enumerated.item =
 756                     uinfo->value.enumerated.items - 1;
 757         }
 758         strcpy(uinfo->value.enumerated.name,
 759                texts[uinfo->value.enumerated.item]);
 760         return 0;
 761 }
 762
 763 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 764                                               struct snd_ctl_elem_value
 765                                               *ucontrol)
 766 {
 767         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 768         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 769                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 770         else
 771                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 772         return 0;
 773 }
 774
 775 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 776                                               struct snd_ctl_elem_value
 777                                               *ucontrol)
 778 {
 779         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 780         int changed = 0;
 781         int is_disgital =
 782             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 783
 784         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 785              && !is_disgital)
 786             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 787                 && is_disgital)) {
 788                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 789                 changed = 1;
 790         }
 791         return changed;
 792 }