1 // SPDX-License-Identifier: GPL-2.0-only
2 /*****************************************************************************
3 *
4 * Copyright (C) 2008 Cedric Bregardis <cedric.bregardis@free.fr> and
5 * Jean-Christian Hassler <jhassler@free.fr>
6 *
7 * This file is part of the Audiowerk2 ALSA driver
8 *
9 *****************************************************************************/
10 #include <linux/init.h>
11 #include <linux/pci.h>
12 #include <linux/dma-mapping.h>
13 #include <linux/slab.h>
14 #include <linux/interrupt.h>
15 #include <linux/delay.h>
16 #include <linux/io.h>
17 #include <linux/module.h>
18 #include <sound/core.h>
19 #include <sound/initval.h>
20 #include <sound/pcm.h>
21 #include <sound/pcm_params.h>
22 #include <sound/control.h>
23
24 #include "saa7146.h"
25 #include "aw2-saa7146.h"
26
27 MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
28 "Jean-Christian Hassler <jhassler@free.fr>");
29 MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
30 MODULE_LICENSE("GPL");
31
32 /*********************************
33 * DEFINES
34 ********************************/
35 #define CTL_ROUTE_ANALOG 0
36 #define CTL_ROUTE_DIGITAL 1
37
38 /*********************************
39 * TYPEDEFS
40 ********************************/
41 /* hardware definition */
42 static const struct snd_pcm_hardware snd_aw2_playback_hw = {
43 .info = (SNDRV_PCM_INFO_MMAP |
44 SNDRV_PCM_INFO_INTERLEAVED |
45 SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
46 .formats = SNDRV_PCM_FMTBIT_S16_LE,
47 .rates = SNDRV_PCM_RATE_44100,
48 .rate_min = 44100,
49 .rate_max = 44100,
50 .channels_min = 2,
51 .channels_max = 4,
52 .buffer_bytes_max = 32768,
53 .period_bytes_min = 4096,
54 .period_bytes_max = 32768,
55 .periods_min = 1,
56 .periods_max = 1024,
57 };
58
59 static const struct snd_pcm_hardware snd_aw2_capture_hw = {
60 .info = (SNDRV_PCM_INFO_MMAP |
61 SNDRV_PCM_INFO_INTERLEAVED |
62 SNDRV_PCM_INFO_BLOCK_TRANSFER | SNDRV_PCM_INFO_MMAP_VALID),
63 .formats = SNDRV_PCM_FMTBIT_S16_LE,
64 .rates = SNDRV_PCM_RATE_44100,
65 .rate_min = 44100,
66 .rate_max = 44100,
67 .channels_min = 2,
68 .channels_max = 2,
69 .buffer_bytes_max = 32768,
70 .period_bytes_min = 4096,
71 .period_bytes_max = 32768,
72 .periods_min = 1,
73 .periods_max = 1024,
74 };
75
76 struct aw2_pcm_device {
77 struct snd_pcm *pcm;
78 unsigned int stream_number;
79 struct aw2 *chip;
80 };
81
82 struct aw2 {
83 struct snd_aw2_saa7146 saa7146;
84
85 struct pci_dev *pci;
86 int irq;
87 spinlock_t reg_lock;
88 struct mutex mtx;
89
90 unsigned long iobase_phys;
91 void __iomem *iobase_virt;
92
93 struct snd_card *card;
94
95 struct aw2_pcm_device device_playback[NB_STREAM_PLAYBACK];
96 struct aw2_pcm_device device_capture[NB_STREAM_CAPTURE];
97 };
98
99 /*********************************
100 * FUNCTION DECLARATIONS
101 ********************************/
102 static int snd_aw2_create(struct snd_card *card, struct pci_dev *pci);
103 static int snd_aw2_probe(struct pci_dev *pci,
104 const struct pci_device_id *pci_id);
105 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
106 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
107 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
108 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
109 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
110 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
111 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
112 int cmd);
113 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
114 int cmd);
115 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
116 *substream);
117 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
118 *substream);
119 static int snd_aw2_new_pcm(struct aw2 *chip);
120
121 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
122 struct snd_ctl_elem_info *uinfo);
123 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
124 struct snd_ctl_elem_value
125 *ucontrol);
126 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
127 struct snd_ctl_elem_value
128 *ucontrol);
129
130 /*********************************
131 * VARIABLES
132 ********************************/
133 static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
134 static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
135 static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
136
137 module_param_array(index, int, NULL, 0444);
138 MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
139 module_param_array(id, charp, NULL, 0444);
140 MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
141 module_param_array(enable, bool, NULL, 0444);
142 MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
143
144 static const struct pci_device_id snd_aw2_ids[] = {
145 {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
146 0, 0, 0},
147 {0}
148 };
149
150 MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
151
152 /* pci_driver definition */
153 static struct pci_driver aw2_driver = {
154 .name = KBUILD_MODNAME,
155 .id_table = snd_aw2_ids,
156 .probe = snd_aw2_probe,
157 };
158
159 module_pci_driver(aw2_driver);
160
161 /* operators for playback PCM alsa interface */
162 static const struct snd_pcm_ops snd_aw2_playback_ops = {
163 .open = snd_aw2_pcm_playback_open,
164 .close = snd_aw2_pcm_playback_close,
165 .prepare = snd_aw2_pcm_prepare_playback,
166 .trigger = snd_aw2_pcm_trigger_playback,
167 .pointer = snd_aw2_pcm_pointer_playback,
168 };
169
170 /* operators for capture PCM alsa interface */
171 static const struct snd_pcm_ops snd_aw2_capture_ops = {
172 .open = snd_aw2_pcm_capture_open,
173 .close = snd_aw2_pcm_capture_close,
174 .prepare = snd_aw2_pcm_prepare_capture,
175 .trigger = snd_aw2_pcm_trigger_capture,
176 .pointer = snd_aw2_pcm_pointer_capture,
177 };
178
179 static const struct snd_kcontrol_new aw2_control = {
180 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
181 .name = "PCM Capture Route",
182 .index = 0,
183 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
184 .private_value = 0xffff,
185 .info = snd_aw2_control_switch_capture_info,
186 .get = snd_aw2_control_switch_capture_get,
187 .put = snd_aw2_control_switch_capture_put
188 };
189
190 /*********************************
191 * FUNCTION IMPLEMENTATIONS
192 ********************************/
193
194 /* component-destructor */
snd_aw2_free(struct snd_card * card)195 static void snd_aw2_free(struct snd_card *card)
196 {
197 struct aw2 *chip = card->private_data;
198
199 /* Free hardware */
200 snd_aw2_saa7146_free(&chip->saa7146);
201 }
202
203 /* chip-specific constructor */
snd_aw2_create(struct snd_card * card,struct pci_dev * pci)204 static int snd_aw2_create(struct snd_card *card,
205 struct pci_dev *pci)
206 {
207 struct aw2 *chip = card->private_data;
208 int err;
209
210 /* initialize the PCI entry */
211 err = pcim_enable_device(pci);
212 if (err < 0)
213 return err;
214 pci_set_master(pci);
215
216 /* check PCI availability (32bit DMA) */
217 if (dma_set_mask_and_coherent(&pci->dev, DMA_BIT_MASK(32))) {
218 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
219 return -ENXIO;
220 }
221
222 /* initialize the stuff */
223 chip->card = card;
224 chip->pci = pci;
225 chip->irq = -1;
226
227 /* (1) PCI resource allocation */
228 err = pcim_iomap_regions(pci, 1 << 0, "Audiowerk2");
229 if (err < 0)
230 return err;
231 chip->iobase_phys = pci_resource_start(pci, 0);
232 chip->iobase_virt = pcim_iomap_table(pci)[0];
233
234 /* (2) initialization of the chip hardware */
235 snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
236
237 if (devm_request_irq(&pci->dev, pci->irq, snd_aw2_saa7146_interrupt,
238 IRQF_SHARED, KBUILD_MODNAME, chip)) {
239 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
240 return -EBUSY;
241 }
242 chip->irq = pci->irq;
243 card->sync_irq = chip->irq;
244 card->private_free = snd_aw2_free;
245
246 dev_info(card->dev,
247 "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
248 return 0;
249 }
250
251 /* constructor */
snd_aw2_probe(struct pci_dev * pci,const struct pci_device_id * pci_id)252 static int snd_aw2_probe(struct pci_dev *pci,
253 const struct pci_device_id *pci_id)
254 {
255 static int dev;
256 struct snd_card *card;
257 struct aw2 *chip;
258 int err;
259
260 /* (1) Continue if device is not enabled, else inc dev */
261 if (dev >= SNDRV_CARDS)
262 return -ENODEV;
263 if (!enable[dev]) {
264 dev++;
265 return -ENOENT;
266 }
267
268 /* (2) Create card instance */
269 err = snd_devm_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
270 sizeof(*chip), &card);
271 if (err < 0)
272 return err;
273 chip = card->private_data;
274
275 /* (3) Create main component */
276 err = snd_aw2_create(card, pci);
277 if (err < 0)
278 goto error;
279
280 /* initialize mutex */
281 mutex_init(&chip->mtx);
282 /* init spinlock */
283 spin_lock_init(&chip->reg_lock);
284 /* (4) Define driver ID and name string */
285 strcpy(card->driver, "aw2");
286 strcpy(card->shortname, "Audiowerk2");
287
288 sprintf(card->longname, "%s with SAA7146 irq %i",
289 card->shortname, chip->irq);
290
291 /* (5) Create other components */
292 snd_aw2_new_pcm(chip);
293
294 /* (6) Register card instance */
295 err = snd_card_register(card);
296 if (err < 0)
297 goto error;
298
299 /* (7) Set PCI driver data */
300 pci_set_drvdata(pci, card);
301
302 dev++;
303 return 0;
304
305 error:
306 snd_card_free(card);
307 return err;
308 }
309
310 /* open callback */
snd_aw2_pcm_playback_open(struct snd_pcm_substream * substream)311 static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
312 {
313 struct snd_pcm_runtime *runtime = substream->runtime;
314
315 dev_dbg(substream->pcm->card->dev, "Playback_open\n");
316 runtime->hw = snd_aw2_playback_hw;
317 return 0;
318 }
319
320 /* close callback */
snd_aw2_pcm_playback_close(struct snd_pcm_substream * substream)321 static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
322 {
323 return 0;
324
325 }
326
snd_aw2_pcm_capture_open(struct snd_pcm_substream * substream)327 static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
328 {
329 struct snd_pcm_runtime *runtime = substream->runtime;
330
331 dev_dbg(substream->pcm->card->dev, "Capture_open\n");
332 runtime->hw = snd_aw2_capture_hw;
333 return 0;
334 }
335
336 /* close callback */
snd_aw2_pcm_capture_close(struct snd_pcm_substream * substream)337 static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
338 {
339 /* TODO: something to do ? */
340 return 0;
341 }
342
343 /* prepare callback for playback */
snd_aw2_pcm_prepare_playback(struct snd_pcm_substream * substream)344 static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
345 {
346 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
347 struct aw2 *chip = pcm_device->chip;
348 struct snd_pcm_runtime *runtime = substream->runtime;
349 unsigned long period_size, buffer_size;
350
351 mutex_lock(&chip->mtx);
352
353 period_size = snd_pcm_lib_period_bytes(substream);
354 buffer_size = snd_pcm_lib_buffer_bytes(substream);
355
356 snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
357 pcm_device->stream_number,
358 runtime->dma_addr, period_size,
359 buffer_size);
360
361 /* Define Interrupt callback */
362 snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
363 (snd_aw2_saa7146_it_cb)
364 snd_pcm_period_elapsed,
365 (void *)substream);
366
367 mutex_unlock(&chip->mtx);
368
369 return 0;
370 }
371
372 /* prepare callback for capture */
snd_aw2_pcm_prepare_capture(struct snd_pcm_substream * substream)373 static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
374 {
375 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
376 struct aw2 *chip = pcm_device->chip;
377 struct snd_pcm_runtime *runtime = substream->runtime;
378 unsigned long period_size, buffer_size;
379
380 mutex_lock(&chip->mtx);
381
382 period_size = snd_pcm_lib_period_bytes(substream);
383 buffer_size = snd_pcm_lib_buffer_bytes(substream);
384
385 snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
386 pcm_device->stream_number,
387 runtime->dma_addr, period_size,
388 buffer_size);
389
390 /* Define Interrupt callback */
391 snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
392 (snd_aw2_saa7146_it_cb)
393 snd_pcm_period_elapsed,
394 (void *)substream);
395
396 mutex_unlock(&chip->mtx);
397
398 return 0;
399 }
400
401 /* playback trigger callback */
snd_aw2_pcm_trigger_playback(struct snd_pcm_substream * substream,int cmd)402 static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
403 int cmd)
404 {
405 int status = 0;
406 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
407 struct aw2 *chip = pcm_device->chip;
408 spin_lock(&chip->reg_lock);
409 switch (cmd) {
410 case SNDRV_PCM_TRIGGER_START:
411 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
412 pcm_device->
413 stream_number);
414 break;
415 case SNDRV_PCM_TRIGGER_STOP:
416 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
417 pcm_device->
418 stream_number);
419 break;
420 default:
421 status = -EINVAL;
422 }
423 spin_unlock(&chip->reg_lock);
424 return status;
425 }
426
427 /* capture trigger callback */
snd_aw2_pcm_trigger_capture(struct snd_pcm_substream * substream,int cmd)428 static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
429 int cmd)
430 {
431 int status = 0;
432 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
433 struct aw2 *chip = pcm_device->chip;
434 spin_lock(&chip->reg_lock);
435 switch (cmd) {
436 case SNDRV_PCM_TRIGGER_START:
437 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
438 pcm_device->
439 stream_number);
440 break;
441 case SNDRV_PCM_TRIGGER_STOP:
442 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
443 pcm_device->
444 stream_number);
445 break;
446 default:
447 status = -EINVAL;
448 }
449 spin_unlock(&chip->reg_lock);
450 return status;
451 }
452
453 /* playback pointer callback */
snd_aw2_pcm_pointer_playback(struct snd_pcm_substream * substream)454 static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
455 *substream)
456 {
457 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
458 struct aw2 *chip = pcm_device->chip;
459 unsigned int current_ptr;
460
461 /* get the current hardware pointer */
462 struct snd_pcm_runtime *runtime = substream->runtime;
463 current_ptr =
464 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
465 pcm_device->stream_number,
466 runtime->dma_area,
467 runtime->buffer_size);
468
469 return bytes_to_frames(substream->runtime, current_ptr);
470 }
471
472 /* capture pointer callback */
snd_aw2_pcm_pointer_capture(struct snd_pcm_substream * substream)473 static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
474 *substream)
475 {
476 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
477 struct aw2 *chip = pcm_device->chip;
478 unsigned int current_ptr;
479
480 /* get the current hardware pointer */
481 struct snd_pcm_runtime *runtime = substream->runtime;
482 current_ptr =
483 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
484 pcm_device->stream_number,
485 runtime->dma_area,
486 runtime->buffer_size);
487
488 return bytes_to_frames(substream->runtime, current_ptr);
489 }
490
491 /* create a pcm device */
snd_aw2_new_pcm(struct aw2 * chip)492 static int snd_aw2_new_pcm(struct aw2 *chip)
493 {
494 struct snd_pcm *pcm_playback_ana;
495 struct snd_pcm *pcm_playback_num;
496 struct snd_pcm *pcm_capture;
497 struct aw2_pcm_device *pcm_device;
498 int err = 0;
499
500 /* Create new Alsa PCM device */
501
502 err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
503 &pcm_playback_ana);
504 if (err < 0) {
505 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
506 return err;
507 }
508
509 /* Creation ok */
510 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
511
512 /* Set PCM device name */
513 strcpy(pcm_playback_ana->name, "Analog playback");
514 /* Associate private data to PCM device */
515 pcm_playback_ana->private_data = pcm_device;
516 /* set operators of PCM device */
517 snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
518 &snd_aw2_playback_ops);
519 /* store PCM device */
520 pcm_device->pcm = pcm_playback_ana;
521 /* give base chip pointer to our internal pcm device
522 structure */
523 pcm_device->chip = chip;
524 /* Give stream number to PCM device */
525 pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
526
527 /* pre-allocation of buffers */
528 /* Preallocate continuous pages. */
529 snd_pcm_set_managed_buffer_all(pcm_playback_ana,
530 SNDRV_DMA_TYPE_DEV,
531 &chip->pci->dev,
532 64 * 1024, 64 * 1024);
533
534 err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
535 &pcm_playback_num);
536
537 if (err < 0) {
538 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
539 return err;
540 }
541 /* Creation ok */
542 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
543
544 /* Set PCM device name */
545 strcpy(pcm_playback_num->name, "Digital playback");
546 /* Associate private data to PCM device */
547 pcm_playback_num->private_data = pcm_device;
548 /* set operators of PCM device */
549 snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
550 &snd_aw2_playback_ops);
551 /* store PCM device */
552 pcm_device->pcm = pcm_playback_num;
553 /* give base chip pointer to our internal pcm device
554 structure */
555 pcm_device->chip = chip;
556 /* Give stream number to PCM device */
557 pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
558
559 /* pre-allocation of buffers */
560 /* Preallocate continuous pages. */
561 snd_pcm_set_managed_buffer_all(pcm_playback_num,
562 SNDRV_DMA_TYPE_DEV,
563 &chip->pci->dev,
564 64 * 1024, 64 * 1024);
565
566 err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
567 &pcm_capture);
568
569 if (err < 0) {
570 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
571 return err;
572 }
573
574 /* Creation ok */
575 pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
576
577 /* Set PCM device name */
578 strcpy(pcm_capture->name, "Capture");
579 /* Associate private data to PCM device */
580 pcm_capture->private_data = pcm_device;
581 /* set operators of PCM device */
582 snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
583 &snd_aw2_capture_ops);
584 /* store PCM device */
585 pcm_device->pcm = pcm_capture;
586 /* give base chip pointer to our internal pcm device
587 structure */
588 pcm_device->chip = chip;
589 /* Give stream number to PCM device */
590 pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
591
592 /* pre-allocation of buffers */
593 /* Preallocate continuous pages. */
594 snd_pcm_set_managed_buffer_all(pcm_capture,
595 SNDRV_DMA_TYPE_DEV,
596 &chip->pci->dev,
597 64 * 1024, 64 * 1024);
598
599 /* Create control */
600 err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
601 if (err < 0) {
602 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
603 return err;
604 }
605
606 return 0;
607 }
608
snd_aw2_control_switch_capture_info(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_info * uinfo)609 static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
610 struct snd_ctl_elem_info *uinfo)
611 {
612 static const char * const texts[2] = {
613 "Analog", "Digital"
614 };
615 return snd_ctl_enum_info(uinfo, 1, 2, texts);
616 }
617
snd_aw2_control_switch_capture_get(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)618 static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
619 struct snd_ctl_elem_value
620 *ucontrol)
621 {
622 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
623 if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
624 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
625 else
626 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
627 return 0;
628 }
629
snd_aw2_control_switch_capture_put(struct snd_kcontrol * kcontrol,struct snd_ctl_elem_value * ucontrol)630 static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
631 struct snd_ctl_elem_value
632 *ucontrol)
633 {
634 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
635 int changed = 0;
636 int is_disgital =
637 snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
638
639 if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
640 && !is_disgital)
641 || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
642 && is_disgital)) {
643 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
644 changed = 1;
645 }
646 return changed;
647 }
648