root/sound/pci/aw2/aw2-alsa.c

DEFINITIONS

1. snd_aw2_dev_free
2. snd_aw2_create
3. snd_aw2_probe
4. snd_aw2_remove
5. snd_aw2_pcm_playback_open
6. snd_aw2_pcm_playback_close
7. snd_aw2_pcm_capture_open
8. snd_aw2_pcm_capture_close
9. snd_aw2_pcm_hw_params
10. snd_aw2_pcm_hw_free
11. snd_aw2_pcm_prepare_playback
12. snd_aw2_pcm_prepare_capture
13. snd_aw2_pcm_trigger_playback
14. snd_aw2_pcm_trigger_capture
15. snd_aw2_pcm_pointer_playback
16. snd_aw2_pcm_pointer_capture
17. snd_aw2_new_pcm
18. snd_aw2_control_switch_capture_info
19. snd_aw2_control_switch_capture_get
20. snd_aw2_control_switch_capture_put

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*****************************************************************************
   3  *
   4  * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and
   5  * Jean-Christian Hassler <jhassler@free.fr>
   6  *
   7  * This file is part of the Audiowerk2 ALSA driver
   8  *
   9  *****************************************************************************/
  10 #include <linux/init.h>
  11 #include <linux/pci.h>
  12 #include <linux/dma-mapping.h>
  13 #include <linux/slab.h>
  14 #include <linux/interrupt.h>
  15 #include <linux/delay.h>
  16 #include <linux/io.h>
  17 #include <linux/module.h>
  18 #include <sound/core.h>
  19 #include <sound/initval.h>
  20 #include <sound/pcm.h>
  21 #include <sound/pcm_params.h>
  22 #include <sound/control.h>
  23 
  24 #include "saa7146.h"
  25 #include "aw2-saa7146.h"
  26 
  27 MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
  28               "Jean-Christian Hassler <jhassler@free.fr>");
  29 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
  30 MODULE_LICENSE("GPL");
  31 
  32 /*********************************
  33  * DEFINES
  34  ********************************/
  35 #define CTL_ROUTE_ANALOG 0
  36 #define CTL_ROUTE_DIGITAL 1
  37 
  38 /*********************************
  39  * TYPEDEFS
  40  ********************************/
  41   /* hardware definition */
  42 static const struct snd_pcm_hardware snd_aw2_playback_hw = {
  43         .info = (SNDRV_PCM_INFO_MMAP |
  44                  SNDRV_PCM_INFO_INTERLEAVED |
  45                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  46         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  47         .rates = SNDRV_PCM_RATE_44100,
  48         .rate_min = 44100,
  49         .rate_max = 44100,
  50         .channels_min = 2,
  51         .channels_max = 4,
  52         .buffer_bytes_max = 32768,
  53         .period_bytes_min = 4096,
  54         .period_bytes_max = 32768,
  55         .periods_min = 1,
  56         .periods_max = 1024,
  57 };
  58 
  59 static const struct snd_pcm_hardware snd_aw2_capture_hw = {
  60         .info = (SNDRV_PCM_INFO_MMAP |
  61                  SNDRV_PCM_INFO_INTERLEAVED |
  62                  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
  63         .formats = SNDRV_PCM_FMTBIT_S16_LE,
  64         .rates = SNDRV_PCM_RATE_44100,
  65         .rate_min = 44100,
  66         .rate_max = 44100,
  67         .channels_min = 2,
  68         .channels_max = 2,
  69         .buffer_bytes_max = 32768,
  70         .period_bytes_min = 4096,
  71         .period_bytes_max = 32768,
  72         .periods_min = 1,
  73         .periods_max = 1024,
  74 };
  75 
  76 struct aw2_pcm_device {
  77         struct snd_pcm *pcm;
  78         unsigned int stream_number;
  79         struct aw2 *chip;
  80 };
  81 
  82 struct aw2 {
  83         struct snd_aw2_saa7146 saa7146;
  84 
  85         struct pci_dev *pci;
  86         int irq;
  87         spinlock_t reg_lock;
  88         struct mutex mtx;
  89 
  90         unsigned long iobase_phys;
  91         void __iomem *iobase_virt;
  92 
  93         struct snd_card *card;
  94 
  95         struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
  96         struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
  97 };
  98 
  99 /*********************************
 100  * FUNCTION DECLARATIONS
 101  ********************************/
 102 static int snd_aw2_dev_free(struct snd_device *device);
 103 static int snd_aw2_create(struct snd_card *card,
 104                           struct pci_dev *pci, struct aw2 **rchip);
 105 static int snd_aw2_probe(struct pci_dev *pci,
 106                          const struct pci_device_id *pci_id);
 107 static void snd_aw2_remove(struct pci_dev *pci);
 108 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
 109 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
 110 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
 111 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
 112 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 113                                  struct snd_pcm_hw_params *hw_params);
 114 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
 115 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
 116 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
 117 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 118                                         int cmd);
 119 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 120                                        int cmd);
 121 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 122                                                       *substream);
 123 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 124                                                      *substream);
 125 static int snd_aw2_new_pcm(struct aw2 *chip);
 126 
 127 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 128                                                struct snd_ctl_elem_info *uinfo);
 129 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 130                                               struct snd_ctl_elem_value
 131                                               *ucontrol);
 132 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 133                                               struct snd_ctl_elem_value
 134                                               *ucontrol);
 135 
 136 /*********************************
 137  * VARIABLES
 138  ********************************/
 139 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
 140 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
 141 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
 142 
 143 module_param_array(index, int, NULL, 0444);
 144 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
 145 module_param_array(id, charp, NULL, 0444);
 146 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
 147 module_param_array(enable, bool, NULL, 0444);
 148 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
 149 
 150 static const struct pci_device_id snd_aw2_ids[] = {
 151         {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
 152          0, 0, 0},
 153         {0}
 154 };
 155 
 156 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
 157 
 158 /* pci_driver definition */
 159 static struct pci_driver aw2_driver = {
 160         .name = KBUILD_MODNAME,
 161         .id_table = snd_aw2_ids,
 162         .probe = snd_aw2_probe,
 163         .remove = snd_aw2_remove,
 164 };
 165 
 166 module_pci_driver(aw2_driver);
 167 
 168 /* operators for playback PCM alsa interface */
 169 static const struct snd_pcm_ops snd_aw2_playback_ops = {
 170         .open = snd_aw2_pcm_playback_open,
 171         .close = snd_aw2_pcm_playback_close,
 172         .ioctl = snd_pcm_lib_ioctl,
 173         .hw_params = snd_aw2_pcm_hw_params,
 174         .hw_free = snd_aw2_pcm_hw_free,
 175         .prepare = snd_aw2_pcm_prepare_playback,
 176         .trigger = snd_aw2_pcm_trigger_playback,
 177         .pointer = snd_aw2_pcm_pointer_playback,
 178 };
 179 
 180 /* operators for capture PCM alsa interface */
 181 static const struct snd_pcm_ops snd_aw2_capture_ops = {
 182         .open = snd_aw2_pcm_capture_open,
 183         .close = snd_aw2_pcm_capture_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_capture,
 188         .trigger = snd_aw2_pcm_trigger_capture,
 189         .pointer = snd_aw2_pcm_pointer_capture,
 190 };
 191 
 192 static const struct snd_kcontrol_new aw2_control = {
 193         .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
 194         .name = "PCM Capture Route",
 195         .index = 0,
 196         .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
 197         .private_value = 0xffff,
 198         .info = snd_aw2_control_switch_capture_info,
 199         .get = snd_aw2_control_switch_capture_get,
 200         .put = snd_aw2_control_switch_capture_put
 201 };
 202 
 203 /*********************************
 204  * FUNCTION IMPLEMENTATIONS
 205  ********************************/
 206 
 207 /* component-destructor */
 208 static int snd_aw2_dev_free(struct snd_device *device)
 209 {
 210         struct aw2 *chip = device->device_data;
 211 
 212         /* Free hardware */
 213         snd_aw2_saa7146_free(&chip->saa7146);
 214 
 215         /* release the irq */
 216         if (chip->irq >= 0)
 217                 free_irq(chip->irq, (void *)chip);
 218         /* release the i/o ports & memory */
 219         iounmap(chip->iobase_virt);
 220         pci_release_regions(chip->pci);
 221         /* disable the PCI entry */
 222         pci_disable_device(chip->pci);
 223         /* release the data */
 224         kfree(chip);
 225 
 226         return 0;
 227 }
 228 
 229 /* chip-specific constructor */
 230 static int snd_aw2_create(struct snd_card *card,
 231                           struct pci_dev *pci, struct aw2 **rchip)
 232 {
 233         struct aw2 *chip;
 234         int err;
 235         static struct snd_device_ops ops = {
 236                 .dev_free = snd_aw2_dev_free,
 237         };
 238 
 239         *rchip = NULL;
 240 
 241         /* initialize the PCI entry */
 242         err = pci_enable_device(pci);
 243         if (err < 0)
 244                 return err;
 245         pci_set_master(pci);
 246 
 247         /* check PCI availability (32bit DMA) */
 248         if ((dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) ||
 249             (dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0)) {
 250                 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
 251                 pci_disable_device(pci);
 252                 return -ENXIO;
 253         }
 254         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
 255         if (chip == NULL) {
 256                 pci_disable_device(pci);
 257                 return -ENOMEM;
 258         }
 259 
 260         /* initialize the stuff */
 261         chip->card = card;
 262         chip->pci = pci;
 263         chip->irq = -1;
 264 
 265         /* (1) PCI resource allocation */
 266         err = pci_request_regions(pci, "Audiowerk2");
 267         if (err < 0) {
 268                 pci_disable_device(pci);
 269                 kfree(chip);
 270                 return err;
 271         }
 272         chip->iobase_phys = pci_resource_start(pci, 0);
 273         chip->iobase_virt =
 274                 ioremap_nocache(chip->iobase_phys,
 275                                 pci_resource_len(pci, 0));
 276 
 277         if (chip->iobase_virt == NULL) {
 278                 dev_err(card->dev, "unable to remap memory region");
 279                 pci_release_regions(pci);
 280                 pci_disable_device(pci);
 281                 kfree(chip);
 282                 return -ENOMEM;
 283         }
 284 
 285         /* (2) initialization of the chip hardware */
 286         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
 287 
 288         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
 289                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
 290                 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
 291 
 292                 iounmap(chip->iobase_virt);
 293                 pci_release_regions(chip->pci);
 294                 pci_disable_device(chip->pci);
 295                 kfree(chip);
 296                 return -EBUSY;
 297         }
 298         chip->irq = pci->irq;
 299 
 300         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
 301         if (err < 0) {
 302                 free_irq(chip->irq, (void *)chip);
 303                 iounmap(chip->iobase_virt);
 304                 pci_release_regions(chip->pci);
 305                 pci_disable_device(chip->pci);
 306                 kfree(chip);
 307                 return err;
 308         }
 309 
 310         *rchip = chip;
 311 
 312         dev_info(card->dev,
 313                  "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
 314         return 0;
 315 }
 316 
 317 /* constructor */
 318 static int snd_aw2_probe(struct pci_dev *pci,
 319                          const struct pci_device_id *pci_id)
 320 {
 321         static int dev;
 322         struct snd_card *card;
 323         struct aw2 *chip;
 324         int err;
 325 
 326         /* (1) Continue if device is not enabled, else inc dev */
 327         if (dev >= SNDRV_CARDS)
 328                 return -ENODEV;
 329         if (!enable[dev]) {
 330                 dev++;
 331                 return -ENOENT;
 332         }
 333 
 334         /* (2) Create card instance */
 335         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
 336                            0, &card);
 337         if (err < 0)
 338                 return err;
 339 
 340         /* (3) Create main component */
 341         err = snd_aw2_create(card, pci, &chip);
 342         if (err < 0) {
 343                 snd_card_free(card);
 344                 return err;
 345         }
 346 
 347         /* initialize mutex */
 348         mutex_init(&chip->mtx);
 349         /* init spinlock */
 350         spin_lock_init(&chip->reg_lock);
 351         /* (4) Define driver ID and name string */
 352         strcpy(card->driver, "aw2");
 353         strcpy(card->shortname, "Audiowerk2");
 354 
 355         sprintf(card->longname, "%s with SAA7146 irq %i",
 356                 card->shortname, chip->irq);
 357 
 358         /* (5) Create other components */
 359         snd_aw2_new_pcm(chip);
 360 
 361         /* (6) Register card instance */
 362         err = snd_card_register(card);
 363         if (err < 0) {
 364                 snd_card_free(card);
 365                 return err;
 366         }
 367 
 368         /* (7) Set PCI driver data */
 369         pci_set_drvdata(pci, card);
 370 
 371         dev++;
 372         return 0;
 373 }
 374 
 375 /* destructor */
 376 static void snd_aw2_remove(struct pci_dev *pci)
 377 {
 378         snd_card_free(pci_get_drvdata(pci));
 379 }
 380 
 381 /* open callback */
 382 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
 383 {
 384         struct snd_pcm_runtime *runtime = substream->runtime;
 385 
 386         dev_dbg(substream->pcm->card->dev, "Playback_open\n");
 387         runtime->hw = snd_aw2_playback_hw;
 388         return 0;
 389 }
 390 
 391 /* close callback */
 392 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
 393 {
 394         return 0;
 395 
 396 }
 397 
 398 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
 399 {
 400         struct snd_pcm_runtime *runtime = substream->runtime;
 401 
 402         dev_dbg(substream->pcm->card->dev, "Capture_open\n");
 403         runtime->hw = snd_aw2_capture_hw;
 404         return 0;
 405 }
 406 
 407 /* close callback */
 408 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
 409 {
 410         /* TODO: something to do ? */
 411         return 0;
 412 }
 413 
 414  /* hw_params callback */
 415 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
 416                                  struct snd_pcm_hw_params *hw_params)
 417 {
 418         return snd_pcm_lib_malloc_pages(substream,
 419                                         params_buffer_bytes(hw_params));
 420 }
 421 
 422 /* hw_free callback */
 423 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
 424 {
 425         return snd_pcm_lib_free_pages(substream);
 426 }
 427 
 428 /* prepare callback for playback */
 429 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
 430 {
 431         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 432         struct aw2 *chip = pcm_device->chip;
 433         struct snd_pcm_runtime *runtime = substream->runtime;
 434         unsigned long period_size, buffer_size;
 435 
 436         mutex_lock(&chip->mtx);
 437 
 438         period_size = snd_pcm_lib_period_bytes(substream);
 439         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 440 
 441         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
 442                                           pcm_device->stream_number,
 443                                           runtime->dma_addr, period_size,
 444                                           buffer_size);
 445 
 446         /* Define Interrupt callback */
 447         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
 448                                                     (snd_aw2_saa7146_it_cb)
 449                                                     snd_pcm_period_elapsed,
 450                                                     (void *)substream);
 451 
 452         mutex_unlock(&chip->mtx);
 453 
 454         return 0;
 455 }
 456 
 457 /* prepare callback for capture */
 458 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
 459 {
 460         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 461         struct aw2 *chip = pcm_device->chip;
 462         struct snd_pcm_runtime *runtime = substream->runtime;
 463         unsigned long period_size, buffer_size;
 464 
 465         mutex_lock(&chip->mtx);
 466 
 467         period_size = snd_pcm_lib_period_bytes(substream);
 468         buffer_size = snd_pcm_lib_buffer_bytes(substream);
 469 
 470         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
 471                                          pcm_device->stream_number,
 472                                          runtime->dma_addr, period_size,
 473                                          buffer_size);
 474 
 475         /* Define Interrupt callback */
 476         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
 477                                                    (snd_aw2_saa7146_it_cb)
 478                                                    snd_pcm_period_elapsed,
 479                                                    (void *)substream);
 480 
 481         mutex_unlock(&chip->mtx);
 482 
 483         return 0;
 484 }
 485 
 486 /* playback trigger callback */
 487 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
 488                                         int cmd)
 489 {
 490         int status = 0;
 491         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 492         struct aw2 *chip = pcm_device->chip;
 493         spin_lock(&chip->reg_lock);
 494         switch (cmd) {
 495         case SNDRV_PCM_TRIGGER_START:
 496                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
 497                                                            pcm_device->
 498                                                            stream_number);
 499                 break;
 500         case SNDRV_PCM_TRIGGER_STOP:
 501                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
 502                                                           pcm_device->
 503                                                           stream_number);
 504                 break;
 505         default:
 506                 status = -EINVAL;
 507         }
 508         spin_unlock(&chip->reg_lock);
 509         return status;
 510 }
 511 
 512 /* capture trigger callback */
 513 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
 514                                        int cmd)
 515 {
 516         int status = 0;
 517         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 518         struct aw2 *chip = pcm_device->chip;
 519         spin_lock(&chip->reg_lock);
 520         switch (cmd) {
 521         case SNDRV_PCM_TRIGGER_START:
 522                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
 523                                                           pcm_device->
 524                                                           stream_number);
 525                 break;
 526         case SNDRV_PCM_TRIGGER_STOP:
 527                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
 528                                                          pcm_device->
 529                                                          stream_number);
 530                 break;
 531         default:
 532                 status = -EINVAL;
 533         }
 534         spin_unlock(&chip->reg_lock);
 535         return status;
 536 }
 537 
 538 /* playback pointer callback */
 539 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
 540                                                       *substream)
 541 {
 542         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 543         struct aw2 *chip = pcm_device->chip;
 544         unsigned int current_ptr;
 545 
 546         /* get the current hardware pointer */
 547         struct snd_pcm_runtime *runtime = substream->runtime;
 548         current_ptr =
 549                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
 550                                                     pcm_device->stream_number,
 551                                                     runtime->dma_area,
 552                                                     runtime->buffer_size);
 553 
 554         return bytes_to_frames(substream->runtime, current_ptr);
 555 }
 556 
 557 /* capture pointer callback */
 558 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
 559                                                      *substream)
 560 {
 561         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
 562         struct aw2 *chip = pcm_device->chip;
 563         unsigned int current_ptr;
 564 
 565         /* get the current hardware pointer */
 566         struct snd_pcm_runtime *runtime = substream->runtime;
 567         current_ptr =
 568                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
 569                                                    pcm_device->stream_number,
 570                                                    runtime->dma_area,
 571                                                    runtime->buffer_size);
 572 
 573         return bytes_to_frames(substream->runtime, current_ptr);
 574 }
 575 
 576 /* create a pcm device */
 577 static int snd_aw2_new_pcm(struct aw2 *chip)
 578 {
 579         struct snd_pcm *pcm_playback_ana;
 580         struct snd_pcm *pcm_playback_num;
 581         struct snd_pcm *pcm_capture;
 582         struct aw2_pcm_device *pcm_device;
 583         int err = 0;
 584 
 585         /* Create new Alsa PCM device */
 586 
 587         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
 588                           &pcm_playback_ana);
 589         if (err < 0) {
 590                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 591                 return err;
 592         }
 593 
 594         /* Creation ok */
 595         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
 596 
 597         /* Set PCM device name */
 598         strcpy(pcm_playback_ana->name, "Analog playback");
 599         /* Associate private data to PCM device */
 600         pcm_playback_ana->private_data = pcm_device;
 601         /* set operators of PCM device */
 602         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
 603                         &snd_aw2_playback_ops);
 604         /* store PCM device */
 605         pcm_device->pcm = pcm_playback_ana;
 606         /* give base chip pointer to our internal pcm device
 607            structure */
 608         pcm_device->chip = chip;
 609         /* Give stream number to PCM device */
 610         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
 611 
 612         /* pre-allocation of buffers */
 613         /* Preallocate continuous pages. */
 614         snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
 615                                               SNDRV_DMA_TYPE_DEV,
 616                                               snd_dma_pci_data(chip->pci),
 617                                               64 * 1024, 64 * 1024);
 618 
 619         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
 620                           &pcm_playback_num);
 621 
 622         if (err < 0) {
 623                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 624                 return err;
 625         }
 626         /* Creation ok */
 627         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
 628 
 629         /* Set PCM device name */
 630         strcpy(pcm_playback_num->name, "Digital playback");
 631         /* Associate private data to PCM device */
 632         pcm_playback_num->private_data = pcm_device;
 633         /* set operators of PCM device */
 634         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
 635                         &snd_aw2_playback_ops);
 636         /* store PCM device */
 637         pcm_device->pcm = pcm_playback_num;
 638         /* give base chip pointer to our internal pcm device
 639            structure */
 640         pcm_device->chip = chip;
 641         /* Give stream number to PCM device */
 642         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
 643 
 644         /* pre-allocation of buffers */
 645         /* Preallocate continuous pages. */
 646         snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
 647                                               SNDRV_DMA_TYPE_DEV,
 648                                               snd_dma_pci_data(chip->pci),
 649                                               64 * 1024, 64 * 1024);
 650 
 651         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
 652                           &pcm_capture);
 653 
 654         if (err < 0) {
 655                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
 656                 return err;
 657         }
 658 
 659         /* Creation ok */
 660         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
 661 
 662         /* Set PCM device name */
 663         strcpy(pcm_capture->name, "Capture");
 664         /* Associate private data to PCM device */
 665         pcm_capture->private_data = pcm_device;
 666         /* set operators of PCM device */
 667         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
 668                         &snd_aw2_capture_ops);
 669         /* store PCM device */
 670         pcm_device->pcm = pcm_capture;
 671         /* give base chip pointer to our internal pcm device
 672            structure */
 673         pcm_device->chip = chip;
 674         /* Give stream number to PCM device */
 675         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
 676 
 677         /* pre-allocation of buffers */
 678         /* Preallocate continuous pages. */
 679         snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
 680                                               SNDRV_DMA_TYPE_DEV,
 681                                               snd_dma_pci_data(chip->pci),
 682                                               64 * 1024, 64 * 1024);
 683 
 684         /* Create control */
 685         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
 686         if (err < 0) {
 687                 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
 688                 return err;
 689         }
 690 
 691         return 0;
 692 }
 693 
 694 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
 695                                                struct snd_ctl_elem_info *uinfo)
 696 {
 697         static const char * const texts[2] = {
 698                 "Analog", "Digital"
 699         };
 700         return snd_ctl_enum_info(uinfo, 1, 2, texts);
 701 }
 702 
 703 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
 704                                               struct snd_ctl_elem_value
 705                                               *ucontrol)
 706 {
 707         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 708         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
 709                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
 710         else
 711                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
 712         return 0;
 713 }
 714 
 715 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
 716                                               struct snd_ctl_elem_value
 717                                               *ucontrol)
 718 {
 719         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
 720         int changed = 0;
 721         int is_disgital =
 722             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
 723 
 724         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
 725              && !is_disgital)
 726             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
 727                 && is_disgital)) {
 728                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
 729                 changed = 1;
 730         }
 731         return changed;
 732 }