Version:  2.0.40 2.2.26 2.4.37 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17

Linux/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 snd_aw2_dev_free(struct snd_device *device);
116 static int snd_aw2_create(struct snd_card *card,
117                           struct pci_dev *pci, struct aw2 **rchip);
118 static int snd_aw2_probe(struct pci_dev *pci,
119                          const struct pci_device_id *pci_id);
120 static void 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 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 const struct pci_device_id 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 = 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 = {
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 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                 dev_err(card->dev, "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                 dev_err(card->dev, "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                 dev_err(card->dev, "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         *rchip = chip;
326 
327         dev_info(card->dev,
328                  "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
329         return 0;
330 }
331 
332 /* constructor */
333 static int snd_aw2_probe(struct pci_dev *pci,
334                          const struct pci_device_id *pci_id)
335 {
336         static int dev;
337         struct snd_card *card;
338         struct aw2 *chip;
339         int err;
340 
341         /* (1) Continue if device is not enabled, else inc dev */
342         if (dev >= SNDRV_CARDS)
343                 return -ENODEV;
344         if (!enable[dev]) {
345                 dev++;
346                 return -ENOENT;
347         }
348 
349         /* (2) Create card instance */
350         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
351                            0, &card);
352         if (err < 0)
353                 return err;
354 
355         /* (3) Create main component */
356         err = snd_aw2_create(card, pci, &chip);
357         if (err < 0) {
358                 snd_card_free(card);
359                 return err;
360         }
361 
362         /* initialize mutex */
363         mutex_init(&chip->mtx);
364         /* init spinlock */
365         spin_lock_init(&chip->reg_lock);
366         /* (4) Define driver ID and name string */
367         strcpy(card->driver, "aw2");
368         strcpy(card->shortname, "Audiowerk2");
369 
370         sprintf(card->longname, "%s with SAA7146 irq %i",
371                 card->shortname, chip->irq);
372 
373         /* (5) Create other components */
374         snd_aw2_new_pcm(chip);
375 
376         /* (6) Register card instance */
377         err = snd_card_register(card);
378         if (err < 0) {
379                 snd_card_free(card);
380                 return err;
381         }
382 
383         /* (7) Set PCI driver data */
384         pci_set_drvdata(pci, card);
385 
386         dev++;
387         return 0;
388 }
389 
390 /* destructor */
391 static void snd_aw2_remove(struct pci_dev *pci)
392 {
393         snd_card_free(pci_get_drvdata(pci));
394 }
395 
396 /* open callback */
397 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
398 {
399         struct snd_pcm_runtime *runtime = substream->runtime;
400 
401         dev_dbg(substream->pcm->card->dev, "Playback_open\n");
402         runtime->hw = snd_aw2_playback_hw;
403         return 0;
404 }
405 
406 /* close callback */
407 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
408 {
409         return 0;
410 
411 }
412 
413 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
414 {
415         struct snd_pcm_runtime *runtime = substream->runtime;
416 
417         dev_dbg(substream->pcm->card->dev, "Capture_open\n");
418         runtime->hw = snd_aw2_capture_hw;
419         return 0;
420 }
421 
422 /* close callback */
423 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
424 {
425         /* TODO: something to do ? */
426         return 0;
427 }
428 
429  /* hw_params callback */
430 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
431                                  struct snd_pcm_hw_params *hw_params)
432 {
433         return snd_pcm_lib_malloc_pages(substream,
434                                         params_buffer_bytes(hw_params));
435 }
436 
437 /* hw_free callback */
438 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
439 {
440         return snd_pcm_lib_free_pages(substream);
441 }
442 
443 /* prepare callback for playback */
444 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
445 {
446         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
447         struct aw2 *chip = pcm_device->chip;
448         struct snd_pcm_runtime *runtime = substream->runtime;
449         unsigned long period_size, buffer_size;
450 
451         mutex_lock(&chip->mtx);
452 
453         period_size = snd_pcm_lib_period_bytes(substream);
454         buffer_size = snd_pcm_lib_buffer_bytes(substream);
455 
456         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
457                                           pcm_device->stream_number,
458                                           runtime->dma_addr, period_size,
459                                           buffer_size);
460 
461         /* Define Interrupt callback */
462         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
463                                                     (snd_aw2_saa7146_it_cb)
464                                                     snd_pcm_period_elapsed,
465                                                     (void *)substream);
466 
467         mutex_unlock(&chip->mtx);
468 
469         return 0;
470 }
471 
472 /* prepare callback for capture */
473 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
474 {
475         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
476         struct aw2 *chip = pcm_device->chip;
477         struct snd_pcm_runtime *runtime = substream->runtime;
478         unsigned long period_size, buffer_size;
479 
480         mutex_lock(&chip->mtx);
481 
482         period_size = snd_pcm_lib_period_bytes(substream);
483         buffer_size = snd_pcm_lib_buffer_bytes(substream);
484 
485         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
486                                          pcm_device->stream_number,
487                                          runtime->dma_addr, period_size,
488                                          buffer_size);
489 
490         /* Define Interrupt callback */
491         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
492                                                    (snd_aw2_saa7146_it_cb)
493                                                    snd_pcm_period_elapsed,
494                                                    (void *)substream);
495 
496         mutex_unlock(&chip->mtx);
497 
498         return 0;
499 }
500 
501 /* playback trigger callback */
502 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
503                                         int cmd)
504 {
505         int status = 0;
506         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
507         struct aw2 *chip = pcm_device->chip;
508         spin_lock(&chip->reg_lock);
509         switch (cmd) {
510         case SNDRV_PCM_TRIGGER_START:
511                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
512                                                            pcm_device->
513                                                            stream_number);
514                 break;
515         case SNDRV_PCM_TRIGGER_STOP:
516                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
517                                                           pcm_device->
518                                                           stream_number);
519                 break;
520         default:
521                 status = -EINVAL;
522         }
523         spin_unlock(&chip->reg_lock);
524         return status;
525 }
526 
527 /* capture trigger callback */
528 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
529                                        int cmd)
530 {
531         int status = 0;
532         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
533         struct aw2 *chip = pcm_device->chip;
534         spin_lock(&chip->reg_lock);
535         switch (cmd) {
536         case SNDRV_PCM_TRIGGER_START:
537                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
538                                                           pcm_device->
539                                                           stream_number);
540                 break;
541         case SNDRV_PCM_TRIGGER_STOP:
542                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
543                                                          pcm_device->
544                                                          stream_number);
545                 break;
546         default:
547                 status = -EINVAL;
548         }
549         spin_unlock(&chip->reg_lock);
550         return status;
551 }
552 
553 /* playback pointer callback */
554 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
555                                                       *substream)
556 {
557         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
558         struct aw2 *chip = pcm_device->chip;
559         unsigned int current_ptr;
560 
561         /* get the current hardware pointer */
562         struct snd_pcm_runtime *runtime = substream->runtime;
563         current_ptr =
564                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
565                                                     pcm_device->stream_number,
566                                                     runtime->dma_area,
567                                                     runtime->buffer_size);
568 
569         return bytes_to_frames(substream->runtime, current_ptr);
570 }
571 
572 /* capture pointer callback */
573 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(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_capture(&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 /* create a pcm device */
592 static int snd_aw2_new_pcm(struct aw2 *chip)
593 {
594         struct snd_pcm *pcm_playback_ana;
595         struct snd_pcm *pcm_playback_num;
596         struct snd_pcm *pcm_capture;
597         struct aw2_pcm_device *pcm_device;
598         int err = 0;
599 
600         /* Create new Alsa PCM device */
601 
602         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
603                           &pcm_playback_ana);
604         if (err < 0) {
605                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
606                 return err;
607         }
608 
609         /* Creation ok */
610         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
611 
612         /* Set PCM device name */
613         strcpy(pcm_playback_ana->name, "Analog playback");
614         /* Associate private data to PCM device */
615         pcm_playback_ana->private_data = pcm_device;
616         /* set operators of PCM device */
617         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
618                         &snd_aw2_playback_ops);
619         /* store PCM device */
620         pcm_device->pcm = pcm_playback_ana;
621         /* give base chip pointer to our internal pcm device
622            structure */
623         pcm_device->chip = chip;
624         /* Give stream number to PCM device */
625         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
626 
627         /* pre-allocation of buffers */
628         /* Preallocate continuous pages. */
629         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
630                                                     SNDRV_DMA_TYPE_DEV,
631                                                     snd_dma_pci_data
632                                                     (chip->pci),
633                                                     64 * 1024, 64 * 1024);
634         if (err)
635                 dev_err(chip->card->dev,
636                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
637                         err);
638 
639         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
640                           &pcm_playback_num);
641 
642         if (err < 0) {
643                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
644                 return err;
645         }
646         /* Creation ok */
647         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
648 
649         /* Set PCM device name */
650         strcpy(pcm_playback_num->name, "Digital playback");
651         /* Associate private data to PCM device */
652         pcm_playback_num->private_data = pcm_device;
653         /* set operators of PCM device */
654         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
655                         &snd_aw2_playback_ops);
656         /* store PCM device */
657         pcm_device->pcm = pcm_playback_num;
658         /* give base chip pointer to our internal pcm device
659            structure */
660         pcm_device->chip = chip;
661         /* Give stream number to PCM device */
662         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
663 
664         /* pre-allocation of buffers */
665         /* Preallocate continuous pages. */
666         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
667                                                     SNDRV_DMA_TYPE_DEV,
668                                                     snd_dma_pci_data
669                                                     (chip->pci),
670                                                     64 * 1024, 64 * 1024);
671         if (err)
672                 dev_err(chip->card->dev,
673                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
674                         err);
675 
676         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
677                           &pcm_capture);
678 
679         if (err < 0) {
680                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
681                 return err;
682         }
683 
684         /* Creation ok */
685         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
686 
687         /* Set PCM device name */
688         strcpy(pcm_capture->name, "Capture");
689         /* Associate private data to PCM device */
690         pcm_capture->private_data = pcm_device;
691         /* set operators of PCM device */
692         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
693                         &snd_aw2_capture_ops);
694         /* store PCM device */
695         pcm_device->pcm = pcm_capture;
696         /* give base chip pointer to our internal pcm device
697            structure */
698         pcm_device->chip = chip;
699         /* Give stream number to PCM device */
700         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
701 
702         /* pre-allocation of buffers */
703         /* Preallocate continuous pages. */
704         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
705                                                     SNDRV_DMA_TYPE_DEV,
706                                                     snd_dma_pci_data
707                                                     (chip->pci),
708                                                     64 * 1024, 64 * 1024);
709         if (err)
710                 dev_err(chip->card->dev,
711                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
712                         err);
713 
714 
715         /* Create control */
716         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
717         if (err < 0) {
718                 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
719                 return err;
720         }
721 
722         return 0;
723 }
724 
725 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
726                                                struct snd_ctl_elem_info *uinfo)
727 {
728         static char *texts[2] = {
729                 "Analog", "Digital"
730         };
731         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
732         uinfo->count = 1;
733         uinfo->value.enumerated.items = 2;
734         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
735                 uinfo->value.enumerated.item =
736                     uinfo->value.enumerated.items - 1;
737         }
738         strcpy(uinfo->value.enumerated.name,
739                texts[uinfo->value.enumerated.item]);
740         return 0;
741 }
742 
743 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
744                                               struct snd_ctl_elem_value
745                                               *ucontrol)
746 {
747         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
748         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
749                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
750         else
751                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
752         return 0;
753 }
754 
755 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
756                                               struct snd_ctl_elem_value
757                                               *ucontrol)
758 {
759         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
760         int changed = 0;
761         int is_disgital =
762             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
763 
764         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
765              && !is_disgital)
766             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
767                 && is_disgital)) {
768                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
769                 changed = 1;
770         }
771         return changed;
772 }
773 

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