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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
27MODULE_AUTHOR("Cedric Bregardis <cedric.bregardis@free.fr>, "
28 "Jean-Christian Hassler <jhassler@free.fr>");
29MODULE_DESCRIPTION("Emagic Audiowerk 2 sound driver");
30MODULE_LICENSE("GPL");
31
32
33
34
35#define CTL_ROUTE_ANALOG 0
36#define CTL_ROUTE_DIGITAL 1
37
38
39
40
41
42static 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
59static 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
76struct aw2_pcm_device {
77 struct snd_pcm *pcm;
78 unsigned int stream_number;
79 struct aw2 *chip;
80};
81
82struct 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
101
102static int snd_aw2_dev_free(struct snd_device *device);
103static int snd_aw2_create(struct snd_card *card,
104 struct pci_dev *pci, struct aw2 **rchip);
105static int snd_aw2_probe(struct pci_dev *pci,
106 const struct pci_device_id *pci_id);
107static void snd_aw2_remove(struct pci_dev *pci);
108static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream);
109static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream);
110static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream);
111static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream);
112static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream);
113static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream);
114static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
115 int cmd);
116static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
117 int cmd);
118static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
119 *substream);
120static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
121 *substream);
122static int snd_aw2_new_pcm(struct aw2 *chip);
123
124static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
125 struct snd_ctl_elem_info *uinfo);
126static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
127 struct snd_ctl_elem_value
128 *ucontrol);
129static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
130 struct snd_ctl_elem_value
131 *ucontrol);
132
133
134
135
136static int index[SNDRV_CARDS] = SNDRV_DEFAULT_IDX;
137static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR;
138static bool enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;
139
140module_param_array(index, int, NULL, 0444);
141MODULE_PARM_DESC(index, "Index value for Audiowerk2 soundcard.");
142module_param_array(id, charp, NULL, 0444);
143MODULE_PARM_DESC(id, "ID string for the Audiowerk2 soundcard.");
144module_param_array(enable, bool, NULL, 0444);
145MODULE_PARM_DESC(enable, "Enable Audiowerk2 soundcard.");
146
147static const struct pci_device_id snd_aw2_ids[] = {
148 {PCI_VENDOR_ID_PHILIPS, PCI_DEVICE_ID_PHILIPS_SAA7146, 0, 0,
149 0, 0, 0},
150 {0}
151};
152
153MODULE_DEVICE_TABLE(pci, snd_aw2_ids);
154
155
156static struct pci_driver aw2_driver = {
157 .name = KBUILD_MODNAME,
158 .id_table = snd_aw2_ids,
159 .probe = snd_aw2_probe,
160 .remove = snd_aw2_remove,
161};
162
163module_pci_driver(aw2_driver);
164
165
166static const struct snd_pcm_ops snd_aw2_playback_ops = {
167 .open = snd_aw2_pcm_playback_open,
168 .close = snd_aw2_pcm_playback_close,
169 .prepare = snd_aw2_pcm_prepare_playback,
170 .trigger = snd_aw2_pcm_trigger_playback,
171 .pointer = snd_aw2_pcm_pointer_playback,
172};
173
174
175static const struct snd_pcm_ops snd_aw2_capture_ops = {
176 .open = snd_aw2_pcm_capture_open,
177 .close = snd_aw2_pcm_capture_close,
178 .prepare = snd_aw2_pcm_prepare_capture,
179 .trigger = snd_aw2_pcm_trigger_capture,
180 .pointer = snd_aw2_pcm_pointer_capture,
181};
182
183static const struct snd_kcontrol_new aw2_control = {
184 .iface = SNDRV_CTL_ELEM_IFACE_MIXER,
185 .name = "PCM Capture Route",
186 .index = 0,
187 .access = SNDRV_CTL_ELEM_ACCESS_READWRITE,
188 .private_value = 0xffff,
189 .info = snd_aw2_control_switch_capture_info,
190 .get = snd_aw2_control_switch_capture_get,
191 .put = snd_aw2_control_switch_capture_put
192};
193
194
195
196
197
198
199static int snd_aw2_dev_free(struct snd_device *device)
200{
201 struct aw2 *chip = device->device_data;
202
203
204 snd_aw2_saa7146_free(&chip->saa7146);
205
206
207 if (chip->irq >= 0)
208 free_irq(chip->irq, (void *)chip);
209
210 iounmap(chip->iobase_virt);
211 pci_release_regions(chip->pci);
212
213 pci_disable_device(chip->pci);
214
215 kfree(chip);
216
217 return 0;
218}
219
220
221static int snd_aw2_create(struct snd_card *card,
222 struct pci_dev *pci, struct aw2 **rchip)
223{
224 struct aw2 *chip;
225 int err;
226 static const struct snd_device_ops ops = {
227 .dev_free = snd_aw2_dev_free,
228 };
229
230 *rchip = NULL;
231
232
233 err = pci_enable_device(pci);
234 if (err < 0)
235 return err;
236 pci_set_master(pci);
237
238
239 if ((dma_set_mask(&pci->dev, DMA_BIT_MASK(32)) < 0) ||
240 (dma_set_coherent_mask(&pci->dev, DMA_BIT_MASK(32)) < 0)) {
241 dev_err(card->dev, "Impossible to set 32bit mask DMA\n");
242 pci_disable_device(pci);
243 return -ENXIO;
244 }
245 chip = kzalloc(sizeof(*chip), GFP_KERNEL);
246 if (chip == NULL) {
247 pci_disable_device(pci);
248 return -ENOMEM;
249 }
250
251
252 chip->card = card;
253 chip->pci = pci;
254 chip->irq = -1;
255
256
257 err = pci_request_regions(pci, "Audiowerk2");
258 if (err < 0) {
259 pci_disable_device(pci);
260 kfree(chip);
261 return err;
262 }
263 chip->iobase_phys = pci_resource_start(pci, 0);
264 chip->iobase_virt =
265 ioremap(chip->iobase_phys,
266 pci_resource_len(pci, 0));
267
268 if (chip->iobase_virt == NULL) {
269 dev_err(card->dev, "unable to remap memory region");
270 pci_release_regions(pci);
271 pci_disable_device(pci);
272 kfree(chip);
273 return -ENOMEM;
274 }
275
276
277 snd_aw2_saa7146_setup(&chip->saa7146, chip->iobase_virt);
278
279 if (request_irq(pci->irq, snd_aw2_saa7146_interrupt,
280 IRQF_SHARED, KBUILD_MODNAME, chip)) {
281 dev_err(card->dev, "Cannot grab irq %d\n", pci->irq);
282
283 iounmap(chip->iobase_virt);
284 pci_release_regions(chip->pci);
285 pci_disable_device(chip->pci);
286 kfree(chip);
287 return -EBUSY;
288 }
289 chip->irq = pci->irq;
290 card->sync_irq = chip->irq;
291
292 err = snd_device_new(card, SNDRV_DEV_LOWLEVEL, chip, &ops);
293 if (err < 0) {
294 free_irq(chip->irq, (void *)chip);
295 iounmap(chip->iobase_virt);
296 pci_release_regions(chip->pci);
297 pci_disable_device(chip->pci);
298 kfree(chip);
299 return err;
300 }
301
302 *rchip = chip;
303
304 dev_info(card->dev,
305 "Audiowerk 2 sound card (saa7146 chipset) detected and managed\n");
306 return 0;
307}
308
309
310static int snd_aw2_probe(struct pci_dev *pci,
311 const struct pci_device_id *pci_id)
312{
313 static int dev;
314 struct snd_card *card;
315 struct aw2 *chip;
316 int err;
317
318
319 if (dev >= SNDRV_CARDS)
320 return -ENODEV;
321 if (!enable[dev]) {
322 dev++;
323 return -ENOENT;
324 }
325
326
327 err = snd_card_new(&pci->dev, index[dev], id[dev], THIS_MODULE,
328 0, &card);
329 if (err < 0)
330 return err;
331
332
333 err = snd_aw2_create(card, pci, &chip);
334 if (err < 0) {
335 snd_card_free(card);
336 return err;
337 }
338
339
340 mutex_init(&chip->mtx);
341
342 spin_lock_init(&chip->reg_lock);
343
344 strcpy(card->driver, "aw2");
345 strcpy(card->shortname, "Audiowerk2");
346
347 sprintf(card->longname, "%s with SAA7146 irq %i",
348 card->shortname, chip->irq);
349
350
351 snd_aw2_new_pcm(chip);
352
353
354 err = snd_card_register(card);
355 if (err < 0) {
356 snd_card_free(card);
357 return err;
358 }
359
360
361 pci_set_drvdata(pci, card);
362
363 dev++;
364 return 0;
365}
366
367
368static void snd_aw2_remove(struct pci_dev *pci)
369{
370 snd_card_free(pci_get_drvdata(pci));
371}
372
373
374static int snd_aw2_pcm_playback_open(struct snd_pcm_substream *substream)
375{
376 struct snd_pcm_runtime *runtime = substream->runtime;
377
378 dev_dbg(substream->pcm->card->dev, "Playback_open\n");
379 runtime->hw = snd_aw2_playback_hw;
380 return 0;
381}
382
383
384static int snd_aw2_pcm_playback_close(struct snd_pcm_substream *substream)
385{
386 return 0;
387
388}
389
390static int snd_aw2_pcm_capture_open(struct snd_pcm_substream *substream)
391{
392 struct snd_pcm_runtime *runtime = substream->runtime;
393
394 dev_dbg(substream->pcm->card->dev, "Capture_open\n");
395 runtime->hw = snd_aw2_capture_hw;
396 return 0;
397}
398
399
400static int snd_aw2_pcm_capture_close(struct snd_pcm_substream *substream)
401{
402
403 return 0;
404}
405
406
407static int snd_aw2_pcm_prepare_playback(struct snd_pcm_substream *substream)
408{
409 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
410 struct aw2 *chip = pcm_device->chip;
411 struct snd_pcm_runtime *runtime = substream->runtime;
412 unsigned long period_size, buffer_size;
413
414 mutex_lock(&chip->mtx);
415
416 period_size = snd_pcm_lib_period_bytes(substream);
417 buffer_size = snd_pcm_lib_buffer_bytes(substream);
418
419 snd_aw2_saa7146_pcm_init_playback(&chip->saa7146,
420 pcm_device->stream_number,
421 runtime->dma_addr, period_size,
422 buffer_size);
423
424
425 snd_aw2_saa7146_define_it_playback_callback(pcm_device->stream_number,
426 (snd_aw2_saa7146_it_cb)
427 snd_pcm_period_elapsed,
428 (void *)substream);
429
430 mutex_unlock(&chip->mtx);
431
432 return 0;
433}
434
435
436static int snd_aw2_pcm_prepare_capture(struct snd_pcm_substream *substream)
437{
438 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
439 struct aw2 *chip = pcm_device->chip;
440 struct snd_pcm_runtime *runtime = substream->runtime;
441 unsigned long period_size, buffer_size;
442
443 mutex_lock(&chip->mtx);
444
445 period_size = snd_pcm_lib_period_bytes(substream);
446 buffer_size = snd_pcm_lib_buffer_bytes(substream);
447
448 snd_aw2_saa7146_pcm_init_capture(&chip->saa7146,
449 pcm_device->stream_number,
450 runtime->dma_addr, period_size,
451 buffer_size);
452
453
454 snd_aw2_saa7146_define_it_capture_callback(pcm_device->stream_number,
455 (snd_aw2_saa7146_it_cb)
456 snd_pcm_period_elapsed,
457 (void *)substream);
458
459 mutex_unlock(&chip->mtx);
460
461 return 0;
462}
463
464
465static int snd_aw2_pcm_trigger_playback(struct snd_pcm_substream *substream,
466 int cmd)
467{
468 int status = 0;
469 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
470 struct aw2 *chip = pcm_device->chip;
471 spin_lock(&chip->reg_lock);
472 switch (cmd) {
473 case SNDRV_PCM_TRIGGER_START:
474 snd_aw2_saa7146_pcm_trigger_start_playback(&chip->saa7146,
475 pcm_device->
476 stream_number);
477 break;
478 case SNDRV_PCM_TRIGGER_STOP:
479 snd_aw2_saa7146_pcm_trigger_stop_playback(&chip->saa7146,
480 pcm_device->
481 stream_number);
482 break;
483 default:
484 status = -EINVAL;
485 }
486 spin_unlock(&chip->reg_lock);
487 return status;
488}
489
490
491static int snd_aw2_pcm_trigger_capture(struct snd_pcm_substream *substream,
492 int cmd)
493{
494 int status = 0;
495 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
496 struct aw2 *chip = pcm_device->chip;
497 spin_lock(&chip->reg_lock);
498 switch (cmd) {
499 case SNDRV_PCM_TRIGGER_START:
500 snd_aw2_saa7146_pcm_trigger_start_capture(&chip->saa7146,
501 pcm_device->
502 stream_number);
503 break;
504 case SNDRV_PCM_TRIGGER_STOP:
505 snd_aw2_saa7146_pcm_trigger_stop_capture(&chip->saa7146,
506 pcm_device->
507 stream_number);
508 break;
509 default:
510 status = -EINVAL;
511 }
512 spin_unlock(&chip->reg_lock);
513 return status;
514}
515
516
517static snd_pcm_uframes_t snd_aw2_pcm_pointer_playback(struct snd_pcm_substream
518 *substream)
519{
520 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
521 struct aw2 *chip = pcm_device->chip;
522 unsigned int current_ptr;
523
524
525 struct snd_pcm_runtime *runtime = substream->runtime;
526 current_ptr =
527 snd_aw2_saa7146_get_hw_ptr_playback(&chip->saa7146,
528 pcm_device->stream_number,
529 runtime->dma_area,
530 runtime->buffer_size);
531
532 return bytes_to_frames(substream->runtime, current_ptr);
533}
534
535
536static snd_pcm_uframes_t snd_aw2_pcm_pointer_capture(struct snd_pcm_substream
537 *substream)
538{
539 struct aw2_pcm_device *pcm_device = snd_pcm_substream_chip(substream);
540 struct aw2 *chip = pcm_device->chip;
541 unsigned int current_ptr;
542
543
544 struct snd_pcm_runtime *runtime = substream->runtime;
545 current_ptr =
546 snd_aw2_saa7146_get_hw_ptr_capture(&chip->saa7146,
547 pcm_device->stream_number,
548 runtime->dma_area,
549 runtime->buffer_size);
550
551 return bytes_to_frames(substream->runtime, current_ptr);
552}
553
554
555static int snd_aw2_new_pcm(struct aw2 *chip)
556{
557 struct snd_pcm *pcm_playback_ana;
558 struct snd_pcm *pcm_playback_num;
559 struct snd_pcm *pcm_capture;
560 struct aw2_pcm_device *pcm_device;
561 int err = 0;
562
563
564
565 err = snd_pcm_new(chip->card, "Audiowerk2 analog playback", 0, 1, 0,
566 &pcm_playback_ana);
567 if (err < 0) {
568 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
569 return err;
570 }
571
572
573 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_ANA];
574
575
576 strcpy(pcm_playback_ana->name, "Analog playback");
577
578 pcm_playback_ana->private_data = pcm_device;
579
580 snd_pcm_set_ops(pcm_playback_ana, SNDRV_PCM_STREAM_PLAYBACK,
581 &snd_aw2_playback_ops);
582
583 pcm_device->pcm = pcm_playback_ana;
584
585
586 pcm_device->chip = chip;
587
588 pcm_device->stream_number = NUM_STREAM_PLAYBACK_ANA;
589
590
591
592 snd_pcm_set_managed_buffer_all(pcm_playback_ana,
593 SNDRV_DMA_TYPE_DEV,
594 &chip->pci->dev,
595 64 * 1024, 64 * 1024);
596
597 err = snd_pcm_new(chip->card, "Audiowerk2 digital playback", 1, 1, 0,
598 &pcm_playback_num);
599
600 if (err < 0) {
601 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
602 return err;
603 }
604
605 pcm_device = &chip->device_playback[NUM_STREAM_PLAYBACK_DIG];
606
607
608 strcpy(pcm_playback_num->name, "Digital playback");
609
610 pcm_playback_num->private_data = pcm_device;
611
612 snd_pcm_set_ops(pcm_playback_num, SNDRV_PCM_STREAM_PLAYBACK,
613 &snd_aw2_playback_ops);
614
615 pcm_device->pcm = pcm_playback_num;
616
617
618 pcm_device->chip = chip;
619
620 pcm_device->stream_number = NUM_STREAM_PLAYBACK_DIG;
621
622
623
624 snd_pcm_set_managed_buffer_all(pcm_playback_num,
625 SNDRV_DMA_TYPE_DEV,
626 &chip->pci->dev,
627 64 * 1024, 64 * 1024);
628
629 err = snd_pcm_new(chip->card, "Audiowerk2 capture", 2, 0, 1,
630 &pcm_capture);
631
632 if (err < 0) {
633 dev_err(chip->card->dev, "snd_pcm_new error (0x%X)\n", err);
634 return err;
635 }
636
637
638 pcm_device = &chip->device_capture[NUM_STREAM_CAPTURE_ANA];
639
640
641 strcpy(pcm_capture->name, "Capture");
642
643 pcm_capture->private_data = pcm_device;
644
645 snd_pcm_set_ops(pcm_capture, SNDRV_PCM_STREAM_CAPTURE,
646 &snd_aw2_capture_ops);
647
648 pcm_device->pcm = pcm_capture;
649
650
651 pcm_device->chip = chip;
652
653 pcm_device->stream_number = NUM_STREAM_CAPTURE_ANA;
654
655
656
657 snd_pcm_set_managed_buffer_all(pcm_capture,
658 SNDRV_DMA_TYPE_DEV,
659 &chip->pci->dev,
660 64 * 1024, 64 * 1024);
661
662
663 err = snd_ctl_add(chip->card, snd_ctl_new1(&aw2_control, chip));
664 if (err < 0) {
665 dev_err(chip->card->dev, "snd_ctl_add error (0x%X)\n", err);
666 return err;
667 }
668
669 return 0;
670}
671
672static int snd_aw2_control_switch_capture_info(struct snd_kcontrol *kcontrol,
673 struct snd_ctl_elem_info *uinfo)
674{
675 static const char * const texts[2] = {
676 "Analog", "Digital"
677 };
678 return snd_ctl_enum_info(uinfo, 1, 2, texts);
679}
680
681static int snd_aw2_control_switch_capture_get(struct snd_kcontrol *kcontrol,
682 struct snd_ctl_elem_value
683 *ucontrol)
684{
685 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
686 if (snd_aw2_saa7146_is_using_digital_input(&chip->saa7146))
687 ucontrol->value.enumerated.item[0] = CTL_ROUTE_DIGITAL;
688 else
689 ucontrol->value.enumerated.item[0] = CTL_ROUTE_ANALOG;
690 return 0;
691}
692
693static int snd_aw2_control_switch_capture_put(struct snd_kcontrol *kcontrol,
694 struct snd_ctl_elem_value
695 *ucontrol)
696{
697 struct aw2 *chip = snd_kcontrol_chip(kcontrol);
698 int changed = 0;
699 int is_disgital =
700 snd_aw2_saa7146_is_using_digital_input(&chip->saa7146);
701
702 if (((ucontrol->value.integer.value[0] == CTL_ROUTE_DIGITAL)
703 && !is_disgital)
704 || ((ucontrol->value.integer.value[0] == CTL_ROUTE_ANALOG)
705 && is_disgital)) {
706 snd_aw2_saa7146_use_digital_input(&chip->saa7146, !is_disgital);
707 changed = 1;
708 }
709 return changed;
710}
711
