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aw2-alsa.c
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1 /*****************************************************************************
2  *
3  * Copyright (C) 2008 Cedric Bregardis <[email protected]> and
4  * Jean-Christian Hassler <[email protected]>
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 <[email protected]>, "
41  "Jean-Christian Hassler <[email protected]>");
42 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
43 MODULE_LICENSE("GPL");
44 
45 /*********************************
46  * DEFINES
47  ********************************/
48 #define CTL_ROUTE_ANALOG 0
49 #define CTL_ROUTE_DIGITAL 1
50 
51 /*********************************
52  * TYPEDEFS
53  ********************************/
54  /* hardware definition */
55 static struct snd_pcm_hardware snd_aw2_playback_hw = {
56  .info = (SNDRV_PCM_INFO_MMAP |
57  SNDRV_PCM_INFO_INTERLEAVED |
58  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
59  .formats = SNDRV_PCM_FMTBIT_S16_LE,
60  .rates = SNDRV_PCM_RATE_44100,
61  .rate_min = 44100,
62  .rate_max = 44100,
63  .channels_min = 2,
64  .channels_max = 4,
65  .buffer_bytes_max = 32768,
66  .period_bytes_min = 4096,
67  .period_bytes_max = 32768,
68  .periods_min = 1,
69  .periods_max = 1024,
70 };
71 
72 static struct snd_pcm_hardware snd_aw2_capture_hw = {
73  .info = (SNDRV_PCM_INFO_MMAP |
74  SNDRV_PCM_INFO_INTERLEAVED |
75  SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
76  .formats = SNDRV_PCM_FMTBIT_S16_LE,
77  .rates = SNDRV_PCM_RATE_44100,
78  .rate_min = 44100,
79  .rate_max = 44100,
80  .channels_min = 2,
81  .channels_max = 2,
82  .buffer_bytes_max = 32768,
83  .period_bytes_min = 4096,
84  .period_bytes_max = 32768,
85  .periods_min = 1,
86  .periods_max = 1024,
87 };
88 
89 struct aw2_pcm_device {
90  struct snd_pcm *pcm;
91  unsigned int stream_number;
92  struct aw2 *chip;
93 };
94 
95 struct aw2 {
96  struct snd_aw2_saa7146 saa7146;
97 
98  struct pci_dev *pci;
99  int irq;
100  spinlock_t reg_lock;
101  struct mutex mtx;
102 
103  unsigned long iobase_phys;
104  void __iomem *iobase_virt;
105 
106  struct snd_card *card;
107 
108  struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
109  struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
110 };
111 
112 /*********************************
113  * FUNCTION DECLARATIONS
114  ********************************/
115 static int snd_aw2_dev_free(struct snd_device *device);
116 static int __devinit snd_aw2_create(struct snd_card *card,
117  struct pci_dev *pci, struct aw2 **rchip);
118 static int __devinit snd_aw2_probe(struct pci_dev *pci,
119  const struct pci_device_id *pci_id);
120 static void __devexit snd_aw2_remove(struct pci_dev *pci);
121 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
122 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
123 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
124 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
125 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
126  struct snd_pcm_hw_params *hw_params);
127 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
128 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
129 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
130 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
131  int cmd);
132 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
133  int cmd);
134 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
135  *substream);
136 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
137  *substream);
138 static int __devinit snd_aw2_new_pcm(struct aw2 *chip);
139 
140 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
141  struct snd_ctl_elem_info *uinfo);
142 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
143  struct snd_ctl_elem_value
144  *ucontrol);
145 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
146  struct snd_ctl_elem_value
147  *ucontrol);
148 
149 /*********************************
150  * VARIABLES
151  ********************************/
152 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
153 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
154 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
155 
156 module_param_array(index, int, NULL, 0444);
157 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
158 module_param_array(id, charp, NULL, 0444);
159 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
160 module_param_array(enable, bool, NULL, 0444);
161 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
162 
163 static DEFINE_PCI_DEVICE_TABLE(snd_aw2_ids) = {
164  {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
165  0, 0, 0},
166  {0}
167 };
168 
169 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
170 
171 /* pci_driver definition */
172 static struct pci_driver aw2_driver = {
173  .name = KBUILD_MODNAME,
174  .id_table = snd_aw2_ids,
175  .probe = snd_aw2_probe,
176  .remove = __devexit_p(snd_aw2_remove),
177 };
178 
179 module_pci_driver(aw2_driver);
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 /* component-destructor */
221 static int snd_aw2_dev_free(struct snd_device *device)
222 {
223  struct aw2 *chip = device->device_data;
224 
225  /* Free hardware */
226  snd_aw2_saa7146_free(&chip->saa7146);
227 
228  /* release the irq */
229  if (chip->irq >= 0)
230  free_irq(chip->irq, (void *)chip);
231  /* release the i/o ports & memory */
232  if (chip->iobase_virt)
233  iounmap(chip->iobase_virt);
234 
235  pci_release_regions(chip->pci);
236  /* disable the PCI entry */
237  pci_disable_device(chip->pci);
238  /* release the data */
239  kfree(chip);
240 
241  return 0;
242 }
243 
244 /* chip-specific constructor */
245 static int __devinit snd_aw2_create(struct snd_card *card,
246  struct pci_dev *pci, struct aw2 **rchip)
247 {
248  struct aw2 *chip;
249  int err;
250  static struct snd_device_ops ops = {
251  .dev_free = snd_aw2_dev_free,
252  };
253 
254  *rchip = NULL;
255 
256  /* initialize the PCI entry */
257  err = pci_enable_device(pci);
258  if (err < 0)
259  return err;
260  pci_set_master(pci);
261 
262  /* check PCI availability (32bit DMA) */
263  if ((pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) ||
264  (pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0)) {
265  printk(KERN_ERR "aw2: Impossible to set 32bit mask DMA\n");
266  pci_disable_device(pci);
267  return -ENXIO;
268  }
269  chip = kzalloc(sizeof(*chip), GFP_KERNEL);
270  if (chip == NULL) {
271  pci_disable_device(pci);
272  return -ENOMEM;
273  }
274 
275  /* initialize the stuff */
276  chip->card = card;
277  chip->pci = pci;
278  chip->irq = -1;
279 
280  /* (1) PCI resource allocation */
281  err = pci_request_regions(pci, "Audiowerk2");
282  if (err < 0) {
283  pci_disable_device(pci);
284  kfree(chip);
285  return err;
286  }
287  chip->iobase_phys = pci_resource_start(pci, 0);
288  chip->iobase_virt =
289  ioremap_nocache(chip->iobase_phys,
290  pci_resource_len(pci, 0));
291 
292  if (chip->iobase_virt == NULL) {
293  printk(KERN_ERR "aw2: unable to remap memory region");
294  pci_release_regions(pci);
295  pci_disable_device(pci);
296  kfree(chip);
297  return -ENOMEM;
298  }
299 
300  /* (2) initialization of the chip hardware */
301  snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
302 
303  if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
304  IRQF_SHARED, KBUILD_MODNAME, chip)) {
305  printk(KERN_ERR "aw2: Cannot grab irq %d\n", pci->irq);
306 
307  iounmap(chip->iobase_virt);
308  pci_release_regions(chip->pci);
309  pci_disable_device(chip->pci);
310  kfree(chip);
311  return -EBUSY;
312  }
313  chip->irq = pci->irq;
314 
315  err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
316  if (err < 0) {
317  free_irq(chip->irq, (void *)chip);
318  iounmap(chip->iobase_virt);
319  pci_release_regions(chip->pci);
320  pci_disable_device(chip->pci);
321  kfree(chip);
322  return err;
323  }
324 
325  snd_card_set_dev(card, &pci->dev);
326  *rchip = chip;
327 
328  printk(KERN_INFO
329  "Audiowerk 2 sound card (saa7146 chipset) detected and "
330  "managed\n");
331  return 0;
332 }
333 
334 /* constructor */
335 static int __devinit snd_aw2_probe(struct pci_dev *pci,
336  const struct pci_device_id *pci_id)
337 {
338  static int dev;
339  struct snd_card *card;
340  struct aw2 *chip;
341  int err;
342 
343  /* (1) Continue if device is not enabled, else inc dev */
344  if (dev >= SNDRV_CARDS)
345  return -ENODEV;
346  if (!enable[dev]) {
347  dev++;
348  return -ENOENT;
349  }
350 
351  /* (2) Create card instance */
352  err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
353  if (err < 0)
354  return err;
355 
356  /* (3) Create main component */
357  err = snd_aw2_create(card, pci, &chip);
358  if (err < 0) {
359  snd_card_free(card);
360  return err;
361  }
362 
363  /* initialize mutex */
364  mutex_init(&chip->mtx);
365  /* init spinlock */
366  spin_lock_init(&chip->reg_lock);
367  /* (4) Define driver ID and name string */
368  strcpy(card->driver, "aw2");
369  strcpy(card->shortname, "Audiowerk2");
370 
371  sprintf(card->longname, "%s with SAA7146 irq %i",
372  card->shortname, chip->irq);
373 
374  /* (5) Create other components */
375  snd_aw2_new_pcm(chip);
376 
377  /* (6) Register card instance */
378  err = snd_card_register(card);
379  if (err < 0) {
380  snd_card_free(card);
381  return err;
382  }
383 
384  /* (7) Set PCI driver data */
385  pci_set_drvdata(pci, card);
386 
387  dev++;
388  return 0;
389 }
390 
391 /* destructor */
392 static void __devexit snd_aw2_remove(struct pci_dev *pci)
393 {
394  snd_card_free(pci_get_drvdata(pci));
395  pci_set_drvdata(pci, NULL);
396 }
397 
398 /* open callback */
399 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
400 {
401  struct snd_pcm_runtime *runtime = substream->runtime;
402 
403  snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
404  runtime->hw = snd_aw2_playback_hw;
405  return 0;
406 }
407 
408 /* close callback */
409 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
410 {
411  return 0;
412 
413 }
414 
415 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
416 {
417  struct snd_pcm_runtime *runtime = substream->runtime;
418 
419  snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
420  runtime->hw = snd_aw2_capture_hw;
421  return 0;
422 }
423 
424 /* close callback */
425 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
426 {
427  /* TODO: something to do ? */
428  return 0;
429 }
430 
431  /* hw_params callback */
432 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
433  struct snd_pcm_hw_params *hw_params)
434 {
435  return snd_pcm_lib_malloc_pages(substream,
436  params_buffer_bytes(hw_params));
437 }
438 
439 /* hw_free callback */
440 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
441 {
442  return snd_pcm_lib_free_pages(substream);
443 }
444 
445 /* prepare callback for playback */
446 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
447 {
448  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
449  struct aw2 *chip = pcm_device->chip;
450  struct snd_pcm_runtime *runtime = substream->runtime;
451  unsigned long period_size, buffer_size;
452 
453  mutex_lock(&chip->mtx);
454 
455  period_size = snd_pcm_lib_period_bytes(substream);
456  buffer_size = snd_pcm_lib_buffer_bytes(substream);
457 
458  snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
459  pcm_device->stream_number,
460  runtime->dma_addr, period_size,
461  buffer_size);
462 
463  /* Define Interrupt callback */
464  snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
465  (snd_aw2_saa7146_it_cb)
466  snd_pcm_period_elapsed,
467  (void *)substream);
468 
469  mutex_unlock(&chip->mtx);
470 
471  return 0;
472 }
473 
474 /* prepare callback for capture */
475 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
476 {
477  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
478  struct aw2 *chip = pcm_device->chip;
479  struct snd_pcm_runtime *runtime = substream->runtime;
480  unsigned long period_size, buffer_size;
481 
482  mutex_lock(&chip->mtx);
483 
484  period_size = snd_pcm_lib_period_bytes(substream);
485  buffer_size = snd_pcm_lib_buffer_bytes(substream);
486 
487  snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
488  pcm_device->stream_number,
489  runtime->dma_addr, period_size,
490  buffer_size);
491 
492  /* Define Interrupt callback */
493  snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
494  (snd_aw2_saa7146_it_cb)
495  snd_pcm_period_elapsed,
496  (void *)substream);
497 
498  mutex_unlock(&chip->mtx);
499 
500  return 0;
501 }
502 
503 /* playback trigger callback */
504 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
505  int cmd)
506 {
507  int status = 0;
508  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
509  struct aw2 *chip = pcm_device->chip;
510  spin_lock(&chip->reg_lock);
511  switch (cmd) {
512  case SNDRV_PCM_TRIGGER_START:
513  snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
514  pcm_device->
515  stream_number);
516  break;
517  case SNDRV_PCM_TRIGGER_STOP:
518  snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
519  pcm_device->
520  stream_number);
521  break;
522  default:
523  status = -EINVAL;
524  }
525  spin_unlock(&chip->reg_lock);
526  return status;
527 }
528 
529 /* capture trigger callback */
530 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
531  int cmd)
532 {
533  int status = 0;
534  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
535  struct aw2 *chip = pcm_device->chip;
536  spin_lock(&chip->reg_lock);
537  switch (cmd) {
538  case SNDRV_PCM_TRIGGER_START:
539  snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
540  pcm_device->
541  stream_number);
542  break;
543  case SNDRV_PCM_TRIGGER_STOP:
544  snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
545  pcm_device->
546  stream_number);
547  break;
548  default:
549  status = -EINVAL;
550  }
551  spin_unlock(&chip->reg_lock);
552  return status;
553 }
554 
555 /* playback pointer callback */
556 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
557  *substream)
558 {
559  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
560  struct aw2 *chip = pcm_device->chip;
561  unsigned int current_ptr;
562 
563  /* get the current hardware pointer */
564  struct snd_pcm_runtime *runtime = substream->runtime;
565  current_ptr =
566  snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
567  pcm_device->stream_number,
568  runtime->dma_area,
569  runtime->buffer_size);
570 
571  return bytes_to_frames(substream->runtime, current_ptr);
572 }
573 
574 /* capture pointer callback */
575 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
576  *substream)
577 {
578  struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
579  struct aw2 *chip = pcm_device->chip;
580  unsigned int current_ptr;
581 
582  /* get the current hardware pointer */
583  struct snd_pcm_runtime *runtime = substream->runtime;
584  current_ptr =
585  snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
586  pcm_device->stream_number,
587  runtime->dma_area,
588  runtime->buffer_size);
589 
590  return bytes_to_frames(substream->runtime, current_ptr);
591 }
592 
593 /* create a pcm device */
594 static int __devinit snd_aw2_new_pcm(struct aw2 *chip)
595 {
596  struct snd_pcm *pcm_playback_ana;
597  struct snd_pcm *pcm_playback_num;
598  struct snd_pcm *pcm_capture;
599  struct aw2_pcm_device *pcm_device;
600  int err = 0;
601 
602  /* Create new Alsa PCM device */
603 
604  err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
605  &pcm_playback_ana);
606  if (err < 0) {
607  printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
608  return err;
609  }
610 
611  /* Creation ok */
612  pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
613 
614  /* Set PCM device name */
615  strcpy(pcm_playback_ana->name, "Analog playback");
616  /* Associate private data to PCM device */
617  pcm_playback_ana->private_data = pcm_device;
618  /* set operators of PCM device */
619  snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
620  &snd_aw2_playback_ops);
621  /* store PCM device */
622  pcm_device->pcm = pcm_playback_ana;
623  /* give base chip pointer to our internal pcm device
624  structure */
625  pcm_device->chip = chip;
626  /* Give stream number to PCM device */
627  pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
628 
629  /* pre-allocation of buffers */
630  /* Preallocate continuous pages. */
631  err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
632  SNDRV_DMA_TYPE_DEV,
633  snd_dma_pci_data
634  (chip->pci),
635  64 * 1024, 64 * 1024);
636  if (err)
637  printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
638  "error (0x%X)\n", err);
639 
640  err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
641  &pcm_playback_num);
642 
643  if (err < 0) {
644  printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
645  return err;
646  }
647  /* Creation ok */
648  pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
649 
650  /* Set PCM device name */
651  strcpy(pcm_playback_num->name, "Digital playback");
652  /* Associate private data to PCM device */
653  pcm_playback_num->private_data = pcm_device;
654  /* set operators of PCM device */
655  snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
656  &snd_aw2_playback_ops);
657  /* store PCM device */
658  pcm_device->pcm = pcm_playback_num;
659  /* give base chip pointer to our internal pcm device
660  structure */
661  pcm_device->chip = chip;
662  /* Give stream number to PCM device */
663  pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
664 
665  /* pre-allocation of buffers */
666  /* Preallocate continuous pages. */
667  err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
668  SNDRV_DMA_TYPE_DEV,
669  snd_dma_pci_data
670  (chip->pci),
671  64 * 1024, 64 * 1024);
672  if (err)
673  printk(KERN_ERR
674  "aw2: snd_pcm_lib_preallocate_pages_for_all error "
675  "(0x%X)\n", err);
676 
677 
678 
679  err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
680  &pcm_capture);
681 
682  if (err < 0) {
683  printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
684  return err;
685  }
686 
687  /* Creation ok */
688  pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
689 
690  /* Set PCM device name */
691  strcpy(pcm_capture->name, "Capture");
692  /* Associate private data to PCM device */
693  pcm_capture->private_data = pcm_device;
694  /* set operators of PCM device */
695  snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
696  &snd_aw2_capture_ops);
697  /* store PCM device */
698  pcm_device->pcm = pcm_capture;
699  /* give base chip pointer to our internal pcm device
700  structure */
701  pcm_device->chip = chip;
702  /* Give stream number to PCM device */
703  pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
704 
705  /* pre-allocation of buffers */
706  /* Preallocate continuous pages. */
707  err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
708  SNDRV_DMA_TYPE_DEV,
709  snd_dma_pci_data
710  (chip->pci),
711  64 * 1024, 64 * 1024);
712  if (err)
713  printk(KERN_ERR
714  "aw2: snd_pcm_lib_preallocate_pages_for_all error "
715  "(0x%X)\n", err);
716 
717 
718  /* Create control */
719  err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
720  if (err < 0) {
721  printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
722  return err;
723  }
724 
725  return 0;
726 }
727 
728 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
729  struct snd_ctl_elem_info *uinfo)
730 {
731  static char *texts[2] = {
732  "Analog", "Digital"
733  };
734  uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
735  uinfo->count = 1;
736  uinfo->value.enumerated.items = 2;
737  if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
738  uinfo->value.enumerated.item =
739  uinfo->value.enumerated.items - 1;
740  }
741  strcpy(uinfo->value.enumerated.name,
742  texts[uinfo->value.enumerated.item]);
743  return 0;
744 }
745 
746 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
747  struct snd_ctl_elem_value
748  *ucontrol)
749 {
750  struct aw2 *chip = snd_kcontrol_chip(kcontrol);
751  if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
752  ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
753  else
754  ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
755  return 0;
756 }
757 
758 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
759  struct snd_ctl_elem_value
760  *ucontrol)
761 {
762  struct aw2 *chip = snd_kcontrol_chip(kcontrol);
763  int changed = 0;
764  int is_disgital =
765  snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
766 
767  if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
768  && !is_disgital)
769  || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
770  && is_disgital)) {
771  snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
772  changed = 1;
773  }
774  return changed;
775 }
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