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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
40MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
41 "Jean-Christian Hassler <jhassler@free.fr>");
42MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
43MODULE_LICENSE("GPL");
44
45
46
47
48#define CTL_ROUTE_ANALOG 0
49#define CTL_ROUTE_DIGITAL 1
50
51
52
53
54
55static 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
72static 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
89struct aw2_pcm_device {
90 struct snd_pcm *pcm;
91 unsigned int stream_number;
92 struct aw2 *chip;
93};
94
95struct 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
114
115static int snd_aw2_dev_free(struct snd_device *device);
116static int snd_aw2_create(struct snd_card *card,
117 struct pci_dev *pci, struct aw2 **rchip);
118static int snd_aw2_probe(struct pci_dev *pci,
119 const struct pci_device_id *pci_id);
120static void snd_aw2_remove(struct pci_dev *pci);
121static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
122static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
123static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
124static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
125static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
126 struct snd_pcm_hw_params *hw_params);
127static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream);
128static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
129static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
130static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
131 int cmd);
132static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
133 int cmd);
134static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
135 *substream);
136static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
137 *substream);
138static int snd_aw2_new_pcm(struct aw2 *chip);
139
140static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
141 struct snd_ctl_elem_info *uinfo);
142static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
143 struct snd_ctl_elem_value
144 *ucontrol);
145static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
146 struct snd_ctl_elem_value
147 *ucontrol);
148
149
150
151
152static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
153static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
154static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
155
156module_param_array(index, int, NULL, 0444);
157MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
158module_param_array(id, charp, NULL, 0444);
159MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
160module_param_array(enable, bool, NULL, 0444);
161MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
162
163static 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
169MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
170
171
172static 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
179module_pci_driver(aw2_driver);
180
181
182static 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
194static 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
205static 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
218
219
220
221static int snd_aw2_dev_free(struct snd_device *device)
222{
223 struct aw2 *chip = device->device_data;
224
225
226 snd_aw2_saa7146_free(&chip->saa7146);
227
228
229 if (chip->irq >= 0)
230 free_irq(chip->irq, (void *)chip);
231
232 if (chip->iobase_virt)
233 iounmap(chip->iobase_virt);
234
235 pci_release_regions(chip->pci);
236
237 pci_disable_device(chip->pci);
238
239 kfree(chip);
240
241 return 0;
242}
243
244
245static 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
257 err = pci_enable_device(pci);
258 if (err < 0)
259 return err;
260 pci_set_master(pci);
261
262
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
276 chip->card = card;
277 chip->pci = pci;
278 chip->irq = -1;
279
280
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
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
335static 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
344 if (dev >= SNDRV_CARDS)
345 return -ENODEV;
346 if (!enable[dev]) {
347 dev++;
348 return -ENOENT;
349 }
350
351
352 err = snd_card_create(index[dev], id[dev], THIS_MODULE, 0, &card);
353 if (err < 0)
354 return err;
355
356
357 err = snd_aw2_create(card, pci, &chip);
358 if (err < 0) {
359 snd_card_free(card);
360 return err;
361 }
362
363
364 mutex_init(&chip->mtx);
365
366 spin_lock_init(&chip->reg_lock);
367
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
375 snd_aw2_new_pcm(chip);
376
377
378 err = snd_card_register(card);
379 if (err < 0) {
380 snd_card_free(card);
381 return err;
382 }
383
384
385 pci_set_drvdata(pci, card);
386
387 dev++;
388 return 0;
389}
390
391
392static void snd_aw2_remove(struct pci_dev *pci)
393{
394 snd_card_free(pci_get_drvdata(pci));
395 pci_set_drvdata(pci, NULL);
396}
397
398
399static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
400{
401 struct snd_pcm_runtime *runtime = substream->runtime;
402
403 snd_printdd(KERN_DEBUG "aw2: Playback_open\n");
404 runtime->hw = snd_aw2_playback_hw;
405 return 0;
406}
407
408
409static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
410{
411 return 0;
412
413}
414
415static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
416{
417 struct snd_pcm_runtime *runtime = substream->runtime;
418
419 snd_printdd(KERN_DEBUG "aw2: Capture_open\n");
420 runtime->hw = snd_aw2_capture_hw;
421 return 0;
422}
423
424
425static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
426{
427
428 return 0;
429}
430
431
432static int snd_aw2_pcm_hw_params(struct snd_pcm_substream *substream,
433 struct snd_pcm_hw_params *hw_params)
434{
435 return snd_pcm_lib_malloc_pages(substream,
436 params_buffer_bytes(hw_params));
437}
438
439
440static int snd_aw2_pcm_hw_free(struct snd_pcm_substream *substream)
441{
442 return snd_pcm_lib_free_pages(substream);
443}
444
445
446static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
447{
448 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
449 struct aw2 *chip = pcm_device->chip;
450 struct snd_pcm_runtime *runtime = substream->runtime;
451 unsigned long period_size, buffer_size;
452
453 mutex_lock(&chip->mtx);
454
455 period_size = snd_pcm_lib_period_bytes(substream);
456 buffer_size = snd_pcm_lib_buffer_bytes(substream);
457
458 snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
459 pcm_device->stream_number,
460 runtime->dma_addr, period_size,
461 buffer_size);
462
463
464 snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
465 (snd_aw2_saa7146_it_cb)
466 snd_pcm_period_elapsed,
467 (void *)substream);
468
469 mutex_unlock(&chip->mtx);
470
471 return 0;
472}
473
474
475static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
476{
477 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
478 struct aw2 *chip = pcm_device->chip;
479 struct snd_pcm_runtime *runtime = substream->runtime;
480 unsigned long period_size, buffer_size;
481
482 mutex_lock(&chip->mtx);
483
484 period_size = snd_pcm_lib_period_bytes(substream);
485 buffer_size = snd_pcm_lib_buffer_bytes(substream);
486
487 snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
488 pcm_device->stream_number,
489 runtime->dma_addr, period_size,
490 buffer_size);
491
492
493 snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
494 (snd_aw2_saa7146_it_cb)
495 snd_pcm_period_elapsed,
496 (void *)substream);
497
498 mutex_unlock(&chip->mtx);
499
500 return 0;
501}
502
503
504static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
505 int cmd)
506{
507 int status = 0;
508 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
509 struct aw2 *chip = pcm_device->chip;
510 spin_lock(&chip->reg_lock);
511 switch (cmd) {
512 case SNDRV_PCM_TRIGGER_START:
513 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
514 pcm_device->
515 stream_number);
516 break;
517 case SNDRV_PCM_TRIGGER_STOP:
518 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
519 pcm_device->
520 stream_number);
521 break;
522 default:
523 status = -EINVAL;
524 }
525 spin_unlock(&chip->reg_lock);
526 return status;
527}
528
529
530static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
531 int cmd)
532{
533 int status = 0;
534 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
535 struct aw2 *chip = pcm_device->chip;
536 spin_lock(&chip->reg_lock);
537 switch (cmd) {
538 case SNDRV_PCM_TRIGGER_START:
539 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
540 pcm_device->
541 stream_number);
542 break;
543 case SNDRV_PCM_TRIGGER_STOP:
544 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
545 pcm_device->
546 stream_number);
547 break;
548 default:
549 status = -EINVAL;
550 }
551 spin_unlock(&chip->reg_lock);
552 return status;
553}
554
555
556static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
557 *substream)
558{
559 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
560 struct aw2 *chip = pcm_device->chip;
561 unsigned int current_ptr;
562
563
564 struct snd_pcm_runtime *runtime = substream->runtime;
565 current_ptr =
566 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
567 pcm_device->stream_number,
568 runtime->dma_area,
569 runtime->buffer_size);
570
571 return bytes_to_frames(substream->runtime, current_ptr);
572}
573
574
575static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
576 *substream)
577{
578 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
579 struct aw2 *chip = pcm_device->chip;
580 unsigned int current_ptr;
581
582
583 struct snd_pcm_runtime *runtime = substream->runtime;
584 current_ptr =
585 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
586 pcm_device->stream_number,
587 runtime->dma_area,
588 runtime->buffer_size);
589
590 return bytes_to_frames(substream->runtime, current_ptr);
591}
592
593
594static int snd_aw2_new_pcm(struct aw2 *chip)
595{
596 struct snd_pcm *pcm_playback_ana;
597 struct snd_pcm *pcm_playback_num;
598 struct snd_pcm *pcm_capture;
599 struct aw2_pcm_device *pcm_device;
600 int err = 0;
601
602
603
604 err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
605 &pcm_playback_ana);
606 if (err < 0) {
607 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
608 return err;
609 }
610
611
612 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
613
614
615 strcpy(pcm_playback_ana->name, "Analog playback");
616
617 pcm_playback_ana->private_data = pcm_device;
618
619 snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
620 &snd_aw2_playback_ops);
621
622 pcm_device->pcm = pcm_playback_ana;
623
624
625 pcm_device->chip = chip;
626
627 pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
628
629
630
631 err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_ana,
632 SNDRV_DMA_TYPE_DEV,
633 snd_dma_pci_data
634 (chip->pci),
635 64 * 1024, 64 * 1024);
636 if (err)
637 printk(KERN_ERR "aw2: snd_pcm_lib_preallocate_pages_for_all "
638 "error (0x%X)\n", err);
639
640 err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
641 &pcm_playback_num);
642
643 if (err < 0) {
644 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
645 return err;
646 }
647
648 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
649
650
651 strcpy(pcm_playback_num->name, "Digital playback");
652
653 pcm_playback_num->private_data = pcm_device;
654
655 snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
656 &snd_aw2_playback_ops);
657
658 pcm_device->pcm = pcm_playback_num;
659
660
661 pcm_device->chip = chip;
662
663 pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
664
665
666
667 err = snd_pcm_lib_preallocate_pages_for_all(pcm_playback_num,
668 SNDRV_DMA_TYPE_DEV,
669 snd_dma_pci_data
670 (chip->pci),
671 64 * 1024, 64 * 1024);
672 if (err)
673 printk(KERN_ERR
674 "aw2: snd_pcm_lib_preallocate_pages_for_all error "
675 "(0x%X)\n", err);
676
677
678
679 err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
680 &pcm_capture);
681
682 if (err < 0) {
683 printk(KERN_ERR "aw2: snd_pcm_new error (0x%X)\n", err);
684 return err;
685 }
686
687
688 pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
689
690
691 strcpy(pcm_capture->name, "Capture");
692
693 pcm_capture->private_data = pcm_device;
694
695 snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
696 &snd_aw2_capture_ops);
697
698 pcm_device->pcm = pcm_capture;
699
700
701 pcm_device->chip = chip;
702
703 pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
704
705
706
707 err = snd_pcm_lib_preallocate_pages_for_all(pcm_capture,
708 SNDRV_DMA_TYPE_DEV,
709 snd_dma_pci_data
710 (chip->pci),
711 64 * 1024, 64 * 1024);
712 if (err)
713 printk(KERN_ERR
714 "aw2: snd_pcm_lib_preallocate_pages_for_all error "
715 "(0x%X)\n", err);
716
717
718
719 err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
720 if (err < 0) {
721 printk(KERN_ERR "aw2: snd_ctl_add error (0x%X)\n", err);
722 return err;
723 }
724
725 return 0;
726}
727
728static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
729 struct snd_ctl_elem_info *uinfo)
730{
731 static char *texts[2] = {
732 "Analog", "Digital"
733 };
734 uinfo->type = SNDRV_CTL_ELEM_TYPE_ENUMERATED;
735 uinfo->count = 1;
736 uinfo->value.enumerated.items = 2;
737 if (uinfo->value.enumerated.item >= uinfo->value.enumerated.items) {
738 uinfo->value.enumerated.item =
739 uinfo->value.enumerated.items - 1;
740 }
741 strcpy(uinfo->value.enumerated.name,
742 texts[uinfo->value.enumerated.item]);
743 return 0;
744}
745
746static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
747 struct snd_ctl_elem_value
748 *ucontrol)
749{
750 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
751 if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
752 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
753 else
754 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
755 return 0;
756}
757
758static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
759 struct snd_ctl_elem_value
760 *ucontrol)
761{
762 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
763 int changed = 0;
764 int is_disgital =
765 snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
766
767 if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
768 && !is_disgital)
769 || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
770 && is_disgital)) {
771 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
772 changed = 1;
773 }
774 return changed;
775}
776
