Version:  2.0.40 2.2.26 2.4.37 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 3.18 3.19 4.0

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         iounmap(chip->iobase_virt);
233         pci_release_regions(chip->pci);
234         /* disable the PCI entry */
235         pci_disable_device(chip->pci);
236         /* release the data */
237         kfree(chip);
238 
239         return 0;
240 }
241 
242 /* chip-specific constructor */
243 static int snd_aw2_create(struct snd_card *card,
244                           struct pci_dev *pci, struct aw2 **rchip)
245 {
246         struct aw2 *chip;
247         int err;
248         static struct snd_device_ops ops = {
249                 .dev_free = snd_aw2_dev_free,
250         };
251 
252         *rchip = NULL;
253 
254         /* initialize the PCI entry */
255         err = pci_enable_device(pci);
256         if (err < 0)
257                 return err;
258         pci_set_master(pci);
259 
260         /* check PCI availability (32bit DMA) */
261         if ((pci_set_dma_mask(pci, DMA_BIT_MASK(32)) < 0) ||
262             (pci_set_consistent_dma_mask(pci, DMA_BIT_MASK(32)) < 0)) {
263                 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
264                 pci_disable_device(pci);
265                 return -ENXIO;
266         }
267         chip = kzalloc(sizeof(*chip), GFP_KERNEL);
268         if (chip == NULL) {
269                 pci_disable_device(pci);
270                 return -ENOMEM;
271         }
272 
273         /* initialize the stuff */
274         chip->card = card;
275         chip->pci = pci;
276         chip->irq = -1;
277 
278         /* (1) PCI resource allocation */
279         err = pci_request_regions(pci, "Audiowerk2");
280         if (err < 0) {
281                 pci_disable_device(pci);
282                 kfree(chip);
283                 return err;
284         }
285         chip->iobase_phys = pci_resource_start(pci, 0);
286         chip->iobase_virt =
287                 ioremap_nocache(chip->iobase_phys,
288                                 pci_resource_len(pci, 0));
289 
290         if (chip->iobase_virt == NULL) {
291                 dev_err(card->dev, "unable to remap memory region");
292                 pci_release_regions(pci);
293                 pci_disable_device(pci);
294                 kfree(chip);
295                 return -ENOMEM;
296         }
297 
298         /* (2) initialization of the chip hardware */
299         snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
300 
301         if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
302                         IRQF_SHARED, KBUILD_MODNAME, chip)) {
303                 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
304 
305                 iounmap(chip->iobase_virt);
306                 pci_release_regions(chip->pci);
307                 pci_disable_device(chip->pci);
308                 kfree(chip);
309                 return -EBUSY;
310         }
311         chip->irq = pci->irq;
312 
313         err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
314         if (err < 0) {
315                 free_irq(chip->irq, (void *)chip);
316                 iounmap(chip->iobase_virt);
317                 pci_release_regions(chip->pci);
318                 pci_disable_device(chip->pci);
319                 kfree(chip);
320                 return err;
321         }
322 
323         *rchip = chip;
324 
325         dev_info(card->dev,
326                  "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
327         return 0;
328 }
329 
330 /* constructor */
331 static int snd_aw2_probe(struct pci_dev *pci,
332                          const struct pci_device_id *pci_id)
333 {
334         static int dev;
335         struct snd_card *card;
336         struct aw2 *chip;
337         int err;
338 
339         /* (1) Continue if device is not enabled, else inc dev */
340         if (dev >= SNDRV_CARDS)
341                 return -ENODEV;
342         if (!enable[dev]) {
343                 dev++;
344                 return -ENOENT;
345         }
346 
347         /* (2) Create card instance */
348         err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
349                            0, &card);
350         if (err < 0)
351                 return err;
352 
353         /* (3) Create main component */
354         err = snd_aw2_create(card, pci, &chip);
355         if (err < 0) {
356                 snd_card_free(card);
357                 return err;
358         }
359 
360         /* initialize mutex */
361         mutex_init(&chip->mtx);
362         /* init spinlock */
363         spin_lock_init(&chip->reg_lock);
364         /* (4) Define driver ID and name string */
365         strcpy(card->driver, "aw2");
366         strcpy(card->shortname, "Audiowerk2");
367 
368         sprintf(card->longname, "%s with SAA7146 irq %i",
369                 card->shortname, chip->irq);
370 
371         /* (5) Create other components */
372         snd_aw2_new_pcm(chip);
373 
374         /* (6) Register card instance */
375         err = snd_card_register(card);
376         if (err < 0) {
377                 snd_card_free(card);
378                 return err;
379         }
380 
381         /* (7) Set PCI driver data */
382         pci_set_drvdata(pci, card);
383 
384         dev++;
385         return 0;
386 }
387 
388 /* destructor */
389 static void snd_aw2_remove(struct pci_dev *pci)
390 {
391         snd_card_free(pci_get_drvdata(pci));
392 }
393 
394 /* open callback */
395 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
396 {
397         struct snd_pcm_runtime *runtime = substream->runtime;
398 
399         dev_dbg(substream->pcm->card->dev, "Playback_open\n");
400         runtime->hw = snd_aw2_playback_hw;
401         return 0;
402 }
403 
404 /* close callback */
405 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
406 {
407         return 0;
408 
409 }
410 
411 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
412 {
413         struct snd_pcm_runtime *runtime = substream->runtime;
414 
415         dev_dbg(substream->pcm->card->dev, "Capture_open\n");
416         runtime->hw = snd_aw2_capture_hw;
417         return 0;
418 }
419 
420 /* close callback */
421 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
422 {
423         /* TODO: something to do ? */
424         return 0;
425 }
426 
427  /* hw_params callback */
428 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
429                                  struct snd_pcm_hw_params *hw_params)
430 {
431         return snd_pcm_lib_malloc_pages(substream,
432                                         params_buffer_bytes(hw_params));
433 }
434 
435 /* hw_free callback */
436 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
437 {
438         return snd_pcm_lib_free_pages(substream);
439 }
440 
441 /* prepare callback for playback */
442 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
443 {
444         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
445         struct aw2 *chip = pcm_device->chip;
446         struct snd_pcm_runtime *runtime = substream->runtime;
447         unsigned long period_size, buffer_size;
448 
449         mutex_lock(&chip->mtx);
450 
451         period_size = snd_pcm_lib_period_bytes(substream);
452         buffer_size = snd_pcm_lib_buffer_bytes(substream);
453 
454         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
455                                           pcm_device->stream_number,
456                                           runtime->dma_addr, period_size,
457                                           buffer_size);
458 
459         /* Define Interrupt callback */
460         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
461                                                     (snd_aw2_saa7146_it_cb)
462                                                     snd_pcm_period_elapsed,
463                                                     (void *)substream);
464 
465         mutex_unlock(&chip->mtx);
466 
467         return 0;
468 }
469 
470 /* prepare callback for capture */
471 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
472 {
473         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
474         struct aw2 *chip = pcm_device->chip;
475         struct snd_pcm_runtime *runtime = substream->runtime;
476         unsigned long period_size, buffer_size;
477 
478         mutex_lock(&chip->mtx);
479 
480         period_size = snd_pcm_lib_period_bytes(substream);
481         buffer_size = snd_pcm_lib_buffer_bytes(substream);
482 
483         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
484                                          pcm_device->stream_number,
485                                          runtime->dma_addr, period_size,
486                                          buffer_size);
487 
488         /* Define Interrupt callback */
489         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
490                                                    (snd_aw2_saa7146_it_cb)
491                                                    snd_pcm_period_elapsed,
492                                                    (void *)substream);
493 
494         mutex_unlock(&chip->mtx);
495 
496         return 0;
497 }
498 
499 /* playback trigger callback */
500 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
501                                         int cmd)
502 {
503         int status = 0;
504         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
505         struct aw2 *chip = pcm_device->chip;
506         spin_lock(&chip->reg_lock);
507         switch (cmd) {
508         case SNDRV_PCM_TRIGGER_START:
509                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
510                                                            pcm_device->
511                                                            stream_number);
512                 break;
513         case SNDRV_PCM_TRIGGER_STOP:
514                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
515                                                           pcm_device->
516                                                           stream_number);
517                 break;
518         default:
519                 status = -EINVAL;
520         }
521         spin_unlock(&chip->reg_lock);
522         return status;
523 }
524 
525 /* capture trigger callback */
526 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
527                                        int cmd)
528 {
529         int status = 0;
530         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
531         struct aw2 *chip = pcm_device->chip;
532         spin_lock(&chip->reg_lock);
533         switch (cmd) {
534         case SNDRV_PCM_TRIGGER_START:
535                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
536                                                           pcm_device->
537                                                           stream_number);
538                 break;
539         case SNDRV_PCM_TRIGGER_STOP:
540                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
541                                                          pcm_device->
542                                                          stream_number);
543                 break;
544         default:
545                 status = -EINVAL;
546         }
547         spin_unlock(&chip->reg_lock);
548         return status;
549 }
550 
551 /* playback pointer callback */
552 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
553                                                       *substream)
554 {
555         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
556         struct aw2 *chip = pcm_device->chip;
557         unsigned int current_ptr;
558 
559         /* get the current hardware pointer */
560         struct snd_pcm_runtime *runtime = substream->runtime;
561         current_ptr =
562                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
563                                                     pcm_device->stream_number,
564                                                     runtime->dma_area,
565                                                     runtime->buffer_size);
566 
567         return bytes_to_frames(substream->runtime, current_ptr);
568 }
569 
570 /* capture pointer callback */
571 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
572                                                      *substream)
573 {
574         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
575         struct aw2 *chip = pcm_device->chip;
576         unsigned int current_ptr;
577 
578         /* get the current hardware pointer */
579         struct snd_pcm_runtime *runtime = substream->runtime;
580         current_ptr =
581                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
582                                                    pcm_device->stream_number,
583                                                    runtime->dma_area,
584                                                    runtime->buffer_size);
585 
586         return bytes_to_frames(substream->runtime, current_ptr);
587 }
588 
589 /* create a pcm device */
590 static int snd_aw2_new_pcm(struct aw2 *chip)
591 {
592         struct snd_pcm *pcm_playback_ana;
593         struct snd_pcm *pcm_playback_num;
594         struct snd_pcm *pcm_capture;
595         struct aw2_pcm_device *pcm_device;
596         int err = 0;
597 
598         /* Create new Alsa PCM device */
599 
600         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
601                           &pcm_playback_ana);
602         if (err < 0) {
603                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
604                 return err;
605         }
606 
607         /* Creation ok */
608         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
609 
610         /* Set PCM device name */
611         strcpy(pcm_playback_ana->name, "Analog playback");
612         /* Associate private data to PCM device */
613         pcm_playback_ana->private_data = pcm_device;
614         /* set operators of PCM device */
615         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
616                         &snd_aw2_playback_ops);
617         /* store PCM device */
618         pcm_device->pcm = pcm_playback_ana;
619         /* give base chip pointer to our internal pcm device
620            structure */
621         pcm_device->chip = chip;
622         /* Give stream number to PCM device */
623         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
624 
625         /* pre-allocation of buffers */
626         /* Preallocate continuous pages. */
627         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
628                                                     SNDRV_DMA_TYPE_DEV,
629                                                     snd_dma_pci_data
630                                                     (chip->pci),
631                                                     64 * 1024, 64 * 1024);
632         if (err)
633                 dev_err(chip->card->dev,
634                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
635                         err);
636 
637         err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
638                           &pcm_playback_num);
639 
640         if (err < 0) {
641                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
642                 return err;
643         }
644         /* Creation ok */
645         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
646 
647         /* Set PCM device name */
648         strcpy(pcm_playback_num->name, "Digital playback");
649         /* Associate private data to PCM device */
650         pcm_playback_num->private_data = pcm_device;
651         /* set operators of PCM device */
652         snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
653                         &snd_aw2_playback_ops);
654         /* store PCM device */
655         pcm_device->pcm = pcm_playback_num;
656         /* give base chip pointer to our internal pcm device
657            structure */
658         pcm_device->chip = chip;
659         /* Give stream number to PCM device */
660         pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
661 
662         /* pre-allocation of buffers */
663         /* Preallocate continuous pages. */
664         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
665                                                     SNDRV_DMA_TYPE_DEV,
666                                                     snd_dma_pci_data
667                                                     (chip->pci),
668                                                     64 * 1024, 64 * 1024);
669         if (err)
670                 dev_err(chip->card->dev,
671                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
672                         err);
673 
674         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
675                           &pcm_capture);
676 
677         if (err < 0) {
678                 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
679                 return err;
680         }
681 
682         /* Creation ok */
683         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
684 
685         /* Set PCM device name */
686         strcpy(pcm_capture->name, "Capture");
687         /* Associate private data to PCM device */
688         pcm_capture->private_data = pcm_device;
689         /* set operators of PCM device */
690         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
691                         &snd_aw2_capture_ops);
692         /* store PCM device */
693         pcm_device->pcm = pcm_capture;
694         /* give base chip pointer to our internal pcm device
695            structure */
696         pcm_device->chip = chip;
697         /* Give stream number to PCM device */
698         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
699 
700         /* pre-allocation of buffers */
701         /* Preallocate continuous pages. */
702         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
703                                                     SNDRV_DMA_TYPE_DEV,
704                                                     snd_dma_pci_data
705                                                     (chip->pci),
706                                                     64 * 1024, 64 * 1024);
707         if (err)
708                 dev_err(chip->card->dev,
709                         "snd_pcm_lib_preallocate_pages_for_all error (0x%X)\n",
710                         err);
711 
712 
713         /* Create control */
714         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
715         if (err < 0) {
716                 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
717                 return err;
718         }
719 
720         return 0;
721 }
722 
723 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
724                                                struct snd_ctl_elem_info *uinfo)
725 {
726         static const char * const texts[2] = {
727                 "Analog", "Digital"
728         };
729         return snd_ctl_enum_info(uinfo, 1, 2, texts);
730 }
731 
732 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
733                                               struct snd_ctl_elem_value
734                                               *ucontrol)
735 {
736         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
737         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
738                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
739         else
740                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
741         return 0;
742 }
743 
744 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
745                                               struct snd_ctl_elem_value
746                                               *ucontrol)
747 {
748         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
749         int changed = 0;
750         int is_disgital =
751             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
752 
753         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
754              && !is_disgital)
755             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
756                 && is_disgital)) {
757                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
758                 changed = 1;
759         }
760         return changed;
761 }
762 

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