~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/sound/pci/aw2/aw2-alsa.c

Version: ~ [ linux-5.10-rc5 ] ~ [ linux-5.9.10 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.79 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.159 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.208 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.245 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.245 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.85 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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 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 = 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                 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 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 snd_aw2_remove(struct pci_dev *pci)
393 {
394         snd_card_free(pci_get_drvdata(pci));
395 }
396 
397 /* open callback */
398 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
399 {
400         struct snd_pcm_runtime *runtime = substream->runtime;
401 
402         snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
403         runtime->hw = snd_aw2_playback_hw;
404         return 0;
405 }
406 
407 /* close callback */
408 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
409 {
410         return 0;
411 
412 }
413 
414 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
415 {
416         struct snd_pcm_runtime *runtime = substream->runtime;
417 
418         snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
419         runtime->hw = snd_aw2_capture_hw;
420         return 0;
421 }
422 
423 /* close callback */
424 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
425 {
426         /* TODO: something to do ? */
427         return 0;
428 }
429 
430  /* hw_params callback */
431 static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
432                                  struct snd_pcm_hw_params *hw_params)
433 {
434         return snd_pcm_lib_malloc_pages(substream,
435                                         params_buffer_bytes(hw_params));
436 }
437 
438 /* hw_free callback */
439 static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
440 {
441         return snd_pcm_lib_free_pages(substream);
442 }
443 
444 /* prepare callback for playback */
445 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
446 {
447         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
448         struct aw2 *chip = pcm_device->chip;
449         struct snd_pcm_runtime *runtime = substream->runtime;
450         unsigned long period_size, buffer_size;
451 
452         mutex_lock(&chip->mtx);
453 
454         period_size = snd_pcm_lib_period_bytes(substream);
455         buffer_size = snd_pcm_lib_buffer_bytes(substream);
456 
457         snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
458                                           pcm_device->stream_number,
459                                           runtime->dma_addr, period_size,
460                                           buffer_size);
461 
462         /* Define Interrupt callback */
463         snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
464                                                     (snd_aw2_saa7146_it_cb)
465                                                     snd_pcm_period_elapsed,
466                                                     (void *)substream);
467 
468         mutex_unlock(&chip->mtx);
469 
470         return 0;
471 }
472 
473 /* prepare callback for capture */
474 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
475 {
476         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
477         struct aw2 *chip = pcm_device->chip;
478         struct snd_pcm_runtime *runtime = substream->runtime;
479         unsigned long period_size, buffer_size;
480 
481         mutex_lock(&chip->mtx);
482 
483         period_size = snd_pcm_lib_period_bytes(substream);
484         buffer_size = snd_pcm_lib_buffer_bytes(substream);
485 
486         snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
487                                          pcm_device->stream_number,
488                                          runtime->dma_addr, period_size,
489                                          buffer_size);
490 
491         /* Define Interrupt callback */
492         snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
493                                                    (snd_aw2_saa7146_it_cb)
494                                                    snd_pcm_period_elapsed,
495                                                    (void *)substream);
496 
497         mutex_unlock(&chip->mtx);
498 
499         return 0;
500 }
501 
502 /* playback trigger callback */
503 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
504                                         int cmd)
505 {
506         int status = 0;
507         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
508         struct aw2 *chip = pcm_device->chip;
509         spin_lock(&chip->reg_lock);
510         switch (cmd) {
511         case SNDRV_PCM_TRIGGER_START:
512                 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
513                                                            pcm_device->
514                                                            stream_number);
515                 break;
516         case SNDRV_PCM_TRIGGER_STOP:
517                 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
518                                                           pcm_device->
519                                                           stream_number);
520                 break;
521         default:
522                 status = -EINVAL;
523         }
524         spin_unlock(&chip->reg_lock);
525         return status;
526 }
527 
528 /* capture trigger callback */
529 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
530                                        int cmd)
531 {
532         int status = 0;
533         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
534         struct aw2 *chip = pcm_device->chip;
535         spin_lock(&chip->reg_lock);
536         switch (cmd) {
537         case SNDRV_PCM_TRIGGER_START:
538                 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
539                                                           pcm_device->
540                                                           stream_number);
541                 break;
542         case SNDRV_PCM_TRIGGER_STOP:
543                 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
544                                                          pcm_device->
545                                                          stream_number);
546                 break;
547         default:
548                 status = -EINVAL;
549         }
550         spin_unlock(&chip->reg_lock);
551         return status;
552 }
553 
554 /* playback pointer callback */
555 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
556                                                       *substream)
557 {
558         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
559         struct aw2 *chip = pcm_device->chip;
560         unsigned int current_ptr;
561 
562         /* get the current hardware pointer */
563         struct snd_pcm_runtime *runtime = substream->runtime;
564         current_ptr =
565                 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
566                                                     pcm_device->stream_number,
567                                                     runtime->dma_area,
568                                                     runtime->buffer_size);
569 
570         return bytes_to_frames(substream->runtime, current_ptr);
571 }
572 
573 /* capture pointer callback */
574 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
575                                                      *substream)
576 {
577         struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
578         struct aw2 *chip = pcm_device->chip;
579         unsigned int current_ptr;
580 
581         /* get the current hardware pointer */
582         struct snd_pcm_runtime *runtime = substream->runtime;
583         current_ptr =
584                 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
585                                                    pcm_device->stream_number,
586                                                    runtime->dma_area,
587                                                    runtime->buffer_size);
588 
589         return bytes_to_frames(substream->runtime, current_ptr);
590 }
591 
592 /* create a pcm device */
593 static int snd_aw2_new_pcm(struct aw2 *chip)
594 {
595         struct snd_pcm *pcm_playback_ana;
596         struct snd_pcm *pcm_playback_num;
597         struct snd_pcm *pcm_capture;
598         struct aw2_pcm_device *pcm_device;
599         int err = 0;
600 
601         /* Create new Alsa PCM device */
602 
603         err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
604                           &pcm_playback_ana);
605         if (err < 0) {
606                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
607                 return err;
608         }
609 
610         /* Creation ok */
611         pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
612 
613         /* Set PCM device name */
614         strcpy(pcm_playback_ana->name, "Analog playback");
615         /* Associate private data to PCM device */
616         pcm_playback_ana->private_data = pcm_device;
617         /* set operators of PCM device */
618         snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
619                         &snd_aw2_playback_ops);
620         /* store PCM device */
621         pcm_device->pcm = pcm_playback_ana;
622         /* give base chip pointer to our internal pcm device
623            structure */
624         pcm_device->chip = chip;
625         /* Give stream number to PCM device */
626         pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
627 
628         /* pre-allocation of buffers */
629         /* Preallocate continuous pages. */
630         err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
631                                                     SNDRV_DMA_TYPE_DEV,
632                                                     snd_dma_pci_data
633                                                     (chip->pci),
634                                                     64 * 1024, 64 * 1024);
635         if (err)
636                 printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
637                        "error (0x%X)\n", 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                 printk(KERN_ERR "aw2: 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                 printk(KERN_ERR
673                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
674                        "(0x%X)\n", err);
675 
676 
677 
678         err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
679                           &pcm_capture);
680 
681         if (err < 0) {
682                 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
683                 return err;
684         }
685 
686         /* Creation ok */
687         pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
688 
689         /* Set PCM device name */
690         strcpy(pcm_capture->name, "Capture");
691         /* Associate private data to PCM device */
692         pcm_capture->private_data = pcm_device;
693         /* set operators of PCM device */
694         snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
695                         &snd_aw2_capture_ops);
696         /* store PCM device */
697         pcm_device->pcm = pcm_capture;
698         /* give base chip pointer to our internal pcm device
699            structure */
700         pcm_device->chip = chip;
701         /* Give stream number to PCM device */
702         pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
703 
704         /* pre-allocation of buffers */
705         /* Preallocate continuous pages. */
706         err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
707                                                     SNDRV_DMA_TYPE_DEV,
708                                                     snd_dma_pci_data
709                                                     (chip->pci),
710                                                     64 * 1024, 64 * 1024);
711         if (err)
712                 printk(KERN_ERR
713                        "aw2: snd_pcm_lib_preallocate_pages_for_all error "
714                        "(0x%X)\n", err);
715 
716 
717         /* Create control */
718         err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
719         if (err < 0) {
720                 printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
721                 return err;
722         }
723 
724         return 0;
725 }
726 
727 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
728                                                struct snd_ctl_elem_info *uinfo)
729 {
730         static char *texts[2] = {
731                 "Analog", "Digital"
732         };
733         uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
734         uinfo->count = 1;
735         uinfo->value.enumerated.items = 2;
736         if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
737                 uinfo->value.enumerated.item =
738                     uinfo->value.enumerated.items - 1;
739         }
740         strcpy(uinfo->value.enumerated.name,
741                texts[uinfo->value.enumerated.item]);
742         return 0;
743 }
744 
745 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
746                                               struct snd_ctl_elem_value
747                                               *ucontrol)
748 {
749         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
750         if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
751                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
752         else
753                 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
754         return 0;
755 }
756 
757 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
758                                               struct snd_ctl_elem_value
759                                               *ucontrol)
760 {
761         struct aw2 *chip = snd_kcontrol_chip(kcontrol);
762         int changed = 0;
763         int is_disgital =
764             snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
765 
766         if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
767              && !is_disgital)
768             || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
769                 && is_disgital)) {
770                 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
771                 changed = 1;
772         }
773         return changed;
774 }
775 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp