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 <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_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
  40               "Jean-Christian Hassler <jhassler@free.fr>");
  41 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
  42 MODULE_LICENSE("GPL");
  43
  44 /*********************************
  45  * DEFINES
  46  ********************************/
  47 #define CTL_ROUTE_ANALOG 0
  48 #define CTL_ROUTE_DIGITAL 1
  49
  50 /*********************************
  51  * TYPEDEFS
  52  ********************************/
  53   /* hardware definition */
  54 static struct snd_pcm_hardware snd_aw2_playback_hw = {
  55         .info = (SNDRV_PCM_INFO_MMAP |
  56                  SNDRV_PCM_INFO_INTERLEAVED |
  57                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  58         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  59         .rates = SNDRV_PCM_RATE_44100,
  60         .rate_min = 44100,
  61         .rate_max = 44100,
  62         .channels_min = 2,
  63         .channels_max = 4,
  64         .buffer_bytes_max = 32768,
  65         .period_bytes_min = 4096,
  66         .period_bytes_max = 32768,
  67         .periods_min = 1,
  68         .periods_max = 1024,
  69 };
  70
  71 static struct snd_pcm_hardware snd_aw2_capture_hw = {
  72         .info = (SNDRV_PCM_INFO_MMAP |
  73                  SNDRV_PCM_INFO_INTERLEAVED |
  74                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  75         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  76         .rates = SNDRV_PCM_RATE_44100,
  77         .rate_min = 44100,
  78         .rate_max = 44100,
  79         .channels_min = 2,
  80         .channels_max = 2,
  81         .buffer_bytes_max = 32768,
  82         .period_bytes_min = 4096,
  83         .period_bytes_max = 32768,
  84         .periods_min = 1,
  85         .periods_max = 1024,
  86 };
  87
  88 struct aw2_pcm_device {
  89         struct snd_pcm *pcm;
  90         unsigned int stream_number;
  91         struct aw2 *chip;
  92 };
  93
  94 struct aw2 {
  95         struct snd_aw2_saa7146 saa7146;
  96
  97         struct pci_dev *pci;
  98         int irq;
  99         spinlock_t reg_lock;
 100         struct mutex mtx;
 101
 102         unsigned long iobase_phys;
 103         void __iomem *iobase_virt;
 104
 105         struct snd_card *card;
 106
 107         struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
 108         struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
 109 };
 110
 111 /*********************************
 112  * FUNCTION DECLARATIONS
 113  ********************************/
 114 static int __init alsa_card_aw2_init(void);
 115 static void __exit alsa_card_aw2_exit(void);
 116 static int snd_aw2_dev_free(struct snd_device *device);
 117 static int __devinit snd_aw2_create(struct snd_card *card,
 118                                     struct pci_dev *pci, struct aw2 **rchip);
 119 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 120                                    const struct pci_device_id *pci_id);
 121 static void __devexit snd_aw2_remove(struct pci_dev *pci);
 122 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
 123 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
 124 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
 125 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
 126 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 127                                  struct snd_pcm_hw_params *hw_params);
 128 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
 129 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
 130 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
 131 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 132                                         int cmd);
 133 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 134                                        int cmd);
 135 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 136                                                       *substream);
 137 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 138                                                      *substream);
 139 static int __devinit snd_aw2_new_pcm(struct aw2 *chip);
 140
 141 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 142                                                struct snd_ctl_elem_info *uinfo);
 143 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 144                                               struct snd_ctl_elem_value
 145                                               *ucontrol);
 146 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 147                                               struct snd_ctl_elem_value
 148                                               *ucontrol);
 149
 150 /*********************************
 151  * VARIABLES
 152  ********************************/
 153 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 154 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 155 static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 156
 157 module_param_array(index, int, NULL, 0444);
 158 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
 159 module_param_array(id, charp, NULL, 0444);
 160 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
 161 module_param_array(enable, bool, NULL, 0444);
 162 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 163
 164 static DEFINE_PCI_DEVICE_TABLE(snd_aw2_ids) = {
 165         {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
 166          0, 0, 0},
 167         {0}
 168 };
 169
 170 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
 171
 172 /* pci_driver definition */
 173 static struct pci_driver driver = {
 174         .name = "Emagic Audiowerk 2",
 175         .id_table = snd_aw2_ids,
 176         .probe = snd_aw2_probe,
 177         .remove = __devexit_p(snd_aw2_remove),
 178 };
 179
 180 /* operators for playback PCM alsa interface */
 181 static struct snd_pcm_ops snd_aw2_playback_ops = {
 182         .open = snd_aw2_pcm_playback_open,
 183         .close = snd_aw2_pcm_playback_close,
 184         .ioctl = snd_pcm_lib_ioctl,
 185         .hw_params = snd_aw2_pcm_hw_params,
 186         .hw_free = snd_aw2_pcm_hw_free,
 187         .prepare = snd_aw2_pcm_prepare_playback,
 188         .trigger = snd_aw2_pcm_trigger_playback,
 189         .pointer = snd_aw2_pcm_pointer_playback,
 190 };
 191
 192 /* operators for capture PCM alsa interface */
 193 static struct snd_pcm_ops snd_aw2_capture_ops = {
 194         .open = snd_aw2_pcm_capture_open,
 195         .close = snd_aw2_pcm_capture_close,
 196         .ioctl = snd_pcm_lib_ioctl,
 197         .hw_params = snd_aw2_pcm_hw_params,
 198         .hw_free = snd_aw2_pcm_hw_free,
 199         .prepare = snd_aw2_pcm_prepare_capture,
 200         .trigger = snd_aw2_pcm_trigger_capture,
 201         .pointer = snd_aw2_pcm_pointer_capture,
 202 };
 203
 204 static struct snd_kcontrol_new aw2_control __devinitdata = {
 205         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 206         .name = "PCM Capture Route",
 207         .index = 0,
 208         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 209         .private_value = 0xffff,
 210         .info = snd_aw2_control_switch_capture_info,
 211         .get = snd_aw2_control_switch_capture_get,
 212         .put = snd_aw2_control_switch_capture_put
 213 };
 214
 215 /*********************************
 216  * FUNCTION IMPLEMENTATIONS
 217  ********************************/
 218
 219 /* initialization of the module */
 220 static int __init alsa_card_aw2_init(void)
 221 {
 222         snd_printdd(KERN_DEBUG "aw2: Load aw2 module\n");
 223         return pci_register_driver(&driver);
 224 }
 225
 226 /* clean up the module */
 227 static void __exit alsa_card_aw2_exit(void)
 228 {
 229         snd_printdd(KERN_DEBUG "aw2: Unload aw2 module\n");
 230         pci_unregister_driver(&driver);
 231 }
 232
 233 module_init(alsa_card_aw2_init);
 234 module_exit(alsa_card_aw2_exit);
 235
 236 /* component-destructor */
 237 static int snd_aw2_dev_free(struct snd_device *device)
 238 {
 239         struct aw2 *chip = device->device_data;
 240
 241         /* Free hardware */
 242         snd_aw2_saa7146_free(&chip->saa7146);
 243
 244         /* release the irq */
 245         if (chip->irq >= 0)
 246                 free_irq(chip->irq, (void *)chip);
 247         /* release the i/o ports & memory */
 248         if (chip->iobase_virt)
 249                 iounmap(chip->iobase_virt);
 250
 251         pci_release_regions(chip->pci);
 252         /* disable the PCI entry */
 253         pci_disable_device(chip->pci);
 254         /* release the data */
 255         kfree(chip);
 256
 257         return 0;
 258 }
 259
 260 /* chip-specific constructor */
 261 static int __devinit snd_aw2_create(struct snd_card *card,
 262                                     struct pci_dev *pci, struct aw2 **rchip)
 263 {
 264         struct aw2 *chip;
 265         int err;
 266         static struct snd_device_ops ops = {
 267                 .dev_free = snd_aw2_dev_free,
 268         };
 269
 270         *rchip = NULL;
 271
 272         /* initialize the PCI entry */
 273         err = pci_enable_device(pci);
 274         if (err < 0)
 275                 return err;
 276         pci_set_master(pci);
 277
 278         /* check PCI availability (32bit DMA) */
 279         if ((pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) ||
 280             (pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0)) {
 281                 printk(KERN_ERR "aw2: Impossible to set 32bit mask DMA\n");
 282                 pci_disable_device(pci);
 283                 return -ENXIO;
 284         }
 285         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 286         if (chip == NULL) {
 287                 pci_disable_device(pci);
 288                 return -ENOMEM;
 289         }
 290
 291         /* initialize the stuff */
 292         chip->card = card;
 293         chip->pci = pci;
 294         chip->irq = -1;
 295
 296         /* (1) PCI resource allocation */
 297         err = pci_request_regions(pci, "Audiowerk2");
 298         if (err < 0) {
 299                 pci_disable_device(pci);
 300                 kfree(chip);
 301                 return err;
 302         }
 303         chip->iobase_phys = pci_resource_start(pci, 0);
 304         chip->iobase_virt =
 305                 ioremap_nocache(chip->iobase_phys,
 306                                 pci_resource_len(pci, 0));
 307
 308         if (chip->iobase_virt == NULL) {
 309                 printk(KERN_ERR "aw2: unable to remap memory region");
 310                 pci_release_regions(pci);
 311                 pci_disable_device(pci);
 312                 kfree(chip);
 313                 return -ENOMEM;
 314         }
 315
 316         /* (2) initialization of the chip hardware */
 317         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 318
 319         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 320                         IRQF_SHARED, "Audiowerk2", chip)) {
 321                 printk(KERN_ERR "aw2: Cannot grab irq %d\n", pci->irq);
 322
 323                 iounmap(chip->iobase_virt);
 324                 pci_release_regions(chip->pci);
 325                 pci_disable_device(chip->pci);
 326                 kfree(chip);
 327                 return -EBUSY;
 328         }
 329         chip->irq = pci->irq;
 330
 331         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 332         if (err < 0) {
 333                 free_irq(chip->irq, (void *)chip);
 334                 iounmap(chip->iobase_virt);
 335                 pci_release_regions(chip->pci);
 336                 pci_disable_device(chip->pci);
 337                 kfree(chip);
 338                 return err;
 339         }
 340
 341         snd_card_set_dev(card, &pci->dev);
 342         *rchip = chip;
 343
 344         printk(KERN_INFO
 345                "Audiowerk 2 sound card (saa7146 chipset) detected and "
 346                "managed\n");
 347         return 0;
 348 }
 349
 350 /* constructor */
 351 static int __devinit snd_aw2_probe(struct pci_dev *pci,
 352                                    const struct pci_device_id *pci_id)
 353 {
 354         static int dev;
 355         struct snd_card *card;
 356         struct aw2 *chip;
 357         int err;
 358
 359         /* (1) Continue if device is not enabled, else inc dev */
 360         if (dev >= SNDRV_CARDS)
 361                 return -ENODEV;
 362         if (!enable[dev]) {
 363                 dev++;
 364                 return -ENOENT;
 365         }
 366
 367         /* (2) Create card instance */
 368         err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
 369         if (err < 0)
 370                 return err;
 371
 372         /* (3) Create main component */
 373         err = snd_aw2_create(card, pci, &chip);
 374         if (err < 0) {
 375                 snd_card_free(card);
 376                 return err;
 377         }
 378
 379         /* initialize mutex */
 380         mutex_init(&chip->mtx);
 381         /* init spinlock */
 382         spin_lock_init(&chip->reg_lock);
 383         /* (4) Define driver ID and name string */
 384         strcpy(card->driver, "aw2");
 385         strcpy(card->shortname, "Audiowerk2");
 386
 387         sprintf(card->longname, "%s with SAA7146 irq %i",
 388                 card->shortname, chip->irq);
 389
 390         /* (5) Create other components */
 391         snd_aw2_new_pcm(chip);
 392
 393         /* (6) Register card instance */
 394         err = snd_card_register(card);
 395         if (err < 0) {
 396                 snd_card_free(card);
 397                 return err;
 398         }
 399
 400         /* (7) Set PCI driver data */
 401         pci_set_drvdata(pci, card);
 402
 403         dev++;
 404         return 0;
 405 }
 406
 407 /* destructor */
 408 static void __devexit snd_aw2_remove(struct pci_dev *pci)
 409 {
 410         snd_card_free(pci_get_drvdata(pci));
 411         pci_set_drvdata(pci, NULL);
 412 }
 413
 414 /* open callback */
 415 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 416 {
 417         struct snd_pcm_runtime *runtime = substream->runtime;
 418
 419         snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
 420         runtime->hw = snd_aw2_playback_hw;
 421         return 0;
 422 }
 423
 424 /* close callback */
 425 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 426 {
 427         return 0;
 428
 429 }
 430
 431 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 432 {
 433         struct snd_pcm_runtime *runtime = substream->runtime;
 434
 435         snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
 436         runtime->hw = snd_aw2_capture_hw;
 437         return 0;
 438 }
 439
 440 /* close callback */
 441 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 442 {
 443         /* TODO: something to do ? */
 444         return 0;
 445 }
 446
 447  /* hw_params callback */
 448 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 449                                  struct snd_pcm_hw_params *hw_params)
 450 {
 451         return snd_pcm_lib_malloc_pages(substream,
 452                                         params_buffer_bytes(hw_params));
 453 }
 454
 455 /* hw_free callback */
 456 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 457 {
 458         return snd_pcm_lib_free_pages(substream);
 459 }
 460
 461 /* prepare callback for playback */
 462 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 463 {
 464         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 465         struct aw2 *chip = pcm_device->chip;
 466         struct snd_pcm_runtime *runtime = substream->runtime;
 467         unsigned long period_size, buffer_size;
 468
 469         mutex_lock(&chip->mtx);
 470
 471         period_size = snd_pcm_lib_period_bytes(substream);
 472         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 473
 474         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 475                                           pcm_device->stream_number,
 476                                           runtime->dma_addr, period_size,
 477                                           buffer_size);
 478
 479         /* Define Interrupt callback */
 480         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 481                                                     (snd_aw2_saa7146_it_cb)
 482                                                     snd_pcm_period_elapsed,
 483                                                     (void *)substream);
 484
 485         mutex_unlock(&chip->mtx);
 486
 487         return 0;
 488 }
 489
 490 /* prepare callback for capture */
 491 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 492 {
 493         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 494         struct aw2 *chip = pcm_device->chip;
 495         struct snd_pcm_runtime *runtime = substream->runtime;
 496         unsigned long period_size, buffer_size;
 497
 498         mutex_lock(&chip->mtx);
 499
 500         period_size = snd_pcm_lib_period_bytes(substream);
 501         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 502
 503         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 504                                          pcm_device->stream_number,
 505                                          runtime->dma_addr, period_size,
 506                                          buffer_size);
 507
 508         /* Define Interrupt callback */
 509         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 510                                                    (snd_aw2_saa7146_it_cb)
 511                                                    snd_pcm_period_elapsed,
 512                                                    (void *)substream);
 513
 514         mutex_unlock(&chip->mtx);
 515
 516         return 0;
 517 }
 518
 519 /* playback trigger callback */
 520 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 521                                         int cmd)
 522 {
 523         int status = 0;
 524         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 525         struct aw2 *chip = pcm_device->chip;
 526         spin_lock(&chip->reg_lock);
 527         switch (cmd) {
 528         case SNDRV_PCM_TRIGGER_START:
 529                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 530                                                            pcm_device->
 531                                                            stream_number);
 532                 break;
 533         case SNDRV_PCM_TRIGGER_STOP:
 534                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 535                                                           pcm_device->
 536                                                           stream_number);
 537                 break;
 538         default:
 539                 status = -EINVAL;
 540         }
 541         spin_unlock(&chip->reg_lock);
 542         return status;
 543 }
 544
 545 /* capture trigger callback */
 546 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 547                                        int cmd)
 548 {
 549         int status = 0;
 550         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 551         struct aw2 *chip = pcm_device->chip;
 552         spin_lock(&chip->reg_lock);
 553         switch (cmd) {
 554         case SNDRV_PCM_TRIGGER_START:
 555                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 556                                                           pcm_device->
 557                                                           stream_number);
 558                 break;
 559         case SNDRV_PCM_TRIGGER_STOP:
 560                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 561                                                          pcm_device->
 562                                                          stream_number);
 563                 break;
 564         default:
 565                 status = -EINVAL;
 566         }
 567         spin_unlock(&chip->reg_lock);
 568         return status;
 569 }
 570
 571 /* playback pointer callback */
 572 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 573                                                       *substream)
 574 {
 575         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 576         struct aw2 *chip = pcm_device->chip;
 577         unsigned int current_ptr;
 578
 579         /* get the current hardware pointer */
 580         struct snd_pcm_runtime *runtime = substream->runtime;
 581         current_ptr =
 582                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
 583                                                     pcm_device->stream_number,
 584                                                     runtime->dma_area,
 585                                                     runtime->buffer_size);
 586
 587         return bytes_to_frames(substream->runtime, current_ptr);
 588 }
 589
 590 /* capture pointer callback */
 591 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 592                                                      *substream)
 593 {
 594         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 595         struct aw2 *chip = pcm_device->chip;
 596         unsigned int current_ptr;
 597
 598         /* get the current hardware pointer */
 599         struct snd_pcm_runtime *runtime = substream->runtime;
 600         current_ptr =
 601                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 602                                                    pcm_device->stream_number,
 603                                                    runtime->dma_area,
 604                                                    runtime->buffer_size);
 605
 606         return bytes_to_frames(substream->runtime, current_ptr);
 607 }
 608
 609 /* create a pcm device */
 610 static int __devinit snd_aw2_new_pcm(struct aw2 *chip)
 611 {
 612         struct snd_pcm *pcm_playback_ana;
 613         struct snd_pcm *pcm_playback_num;
 614         struct snd_pcm *pcm_capture;
 615         struct aw2_pcm_device *pcm_device;
 616         int err = 0;
 617
 618         /* Create new Alsa PCM device */
 619
 620         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 621                           &pcm_playback_ana);
 622         if (err < 0) {
 623                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 624                 return err;
 625         }
 626
 627         /* Creation ok */
 628         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 629
 630         /* Set PCM device name */
 631         strcpy(pcm_playback_ana->name, "Analog playback");
 632         /* Associate private data to PCM device */
 633         pcm_playback_ana->private_data = pcm_device;
 634         /* set operators of PCM device */
 635         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 636                         &snd_aw2_playback_ops);
 637         /* store PCM device */
 638         pcm_device->pcm = pcm_playback_ana;
 639         /* give base chip pointer to our internal pcm device
 640            structure */
 641         pcm_device->chip = chip;
 642         /* Give stream number to PCM device */
 643         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 644
 645         /* pre-allocation of buffers */
 646         /* Preallocate continuous pages. */
 647         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 648                                                     SNDRV_DMA_TYPE_DEV,
 649                                                     snd_dma_pci_data
 650                                                     (chip->pci),
 651                                                     64 * 1024, 64 * 1024);
 652         if (err)
 653                 printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
 654                        "error (0x%X)\n", err);
 655
 656         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 657                           &pcm_playback_num);
 658
 659         if (err < 0) {
 660                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 661                 return err;
 662         }
 663         /* Creation ok */
 664         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 665
 666         /* Set PCM device name */
 667         strcpy(pcm_playback_num->name, "Digital playback");
 668         /* Associate private data to PCM device */
 669         pcm_playback_num->private_data = pcm_device;
 670         /* set operators of PCM device */
 671         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 672                         &snd_aw2_playback_ops);
 673         /* store PCM device */
 674         pcm_device->pcm = pcm_playback_num;
 675         /* give base chip pointer to our internal pcm device
 676            structure */
 677         pcm_device->chip = chip;
 678         /* Give stream number to PCM device */
 679         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 680
 681         /* pre-allocation of buffers */
 682         /* Preallocate continuous pages. */
 683         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 684                                                     SNDRV_DMA_TYPE_DEV,
 685                                                     snd_dma_pci_data
 686                                                     (chip->pci),
 687                                                     64 * 1024, 64 * 1024);
 688         if (err)
 689                 printk(KERN_ERR
 690                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 691                        "(0x%X)\n", err);
 692
 693
 694
 695         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 696                           &pcm_capture);
 697
 698         if (err < 0) {
 699                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
 700                 return err;
 701         }
 702
 703         /* Creation ok */
 704         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 705
 706         /* Set PCM device name */
 707         strcpy(pcm_capture->name, "Capture");
 708         /* Associate private data to PCM device */
 709         pcm_capture->private_data = pcm_device;
 710         /* set operators of PCM device */
 711         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 712                         &snd_aw2_capture_ops);
 713         /* store PCM device */
 714         pcm_device->pcm = pcm_capture;
 715         /* give base chip pointer to our internal pcm device
 716            structure */
 717         pcm_device->chip = chip;
 718         /* Give stream number to PCM device */
 719         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 720
 721         /* pre-allocation of buffers */
 722         /* Preallocate continuous pages. */
 723         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 724                                                     SNDRV_DMA_TYPE_DEV,
 725                                                     snd_dma_pci_data
 726                                                     (chip->pci),
 727                                                     64 * 1024, 64 * 1024);
 728         if (err)
 729                 printk(KERN_ERR
 730                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
 731                        "(0x%X)\n", err);
 732
 733
 734         /* Create control */
 735         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 736         if (err < 0) {
 737                 printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
 738                 return err;
 739         }
 740
 741         return 0;
 742 }
 743
 744 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 745                                                struct snd_ctl_elem_info *uinfo)
 746 {
 747         static char *texts[2] = {
 748                 "Analog", "Digital"
 749         };
 750         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
 751         uinfo->count = 1;
 752         uinfo->value.enumerated.items = 2;
 753         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
 754                 uinfo->value.enumerated.item =
 755                     uinfo->value.enumerated.items - 1;
 756         }
 757         strcpy(uinfo->value.enumerated.name,
 758                texts[uinfo->value.enumerated.item]);
 759         return 0;
 760 }
 761
 762 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 763                                               struct snd_ctl_elem_value
 764                                               *ucontrol)
 765 {
 766         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 767         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 768                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 769         else
 770                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 771         return 0;
 772 }
 773
 774 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 775                                               struct snd_ctl_elem_value
 776                                               *ucontrol)
 777 {
 778         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 779         int changed = 0;
 780         int is_disgital =
 781             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 782
 783         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 784              && !is_disgital)
 785             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 786                 && is_disgital)) {
 787                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 788                 changed = 1;
 789         }
 790         return changed;
 791 }