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26#include <linux/module.h>
27#include <linux/moduleparam.h>
28#include <linux/init.h>
29#include <linux/async.h>
30#include <linux/delay.h>
31#include <linux/pm.h>
32#include <linux/bitops.h>
33#include <linux/platform_device.h>
34#include <linux/jiffies.h>
35#include <linux/debugfs.h>
36#include <linux/pm_runtime.h>
37#include <linux/regulator/consumer.h>
38#include <linux/clk.h>
39#include <linux/slab.h>
40#include <sound/core.h>
41#include <sound/pcm.h>
42#include <sound/pcm_params.h>
43#include <sound/soc.h>
44#include <sound/initval.h>
45
46#include <trace/events/asoc.h>
47
48#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
49
50
51static int dapm_up_seq[] = {
52 [snd_soc_dapm_pre] = 0,
53 [snd_soc_dapm_supply] = 1,
54 [snd_soc_dapm_regulator_supply] = 1,
55 [snd_soc_dapm_clock_supply] = 1,
56 [snd_soc_dapm_micbias] = 2,
57 [snd_soc_dapm_dai_link] = 2,
58 [snd_soc_dapm_dai_in] = 3,
59 [snd_soc_dapm_dai_out] = 3,
60 [snd_soc_dapm_aif_in] = 3,
61 [snd_soc_dapm_aif_out] = 3,
62 [snd_soc_dapm_mic] = 4,
63 [snd_soc_dapm_mux] = 5,
64 [snd_soc_dapm_virt_mux] = 5,
65 [snd_soc_dapm_value_mux] = 5,
66 [snd_soc_dapm_dac] = 6,
67 [snd_soc_dapm_switch] = 7,
68 [snd_soc_dapm_mixer] = 7,
69 [snd_soc_dapm_mixer_named_ctl] = 7,
70 [snd_soc_dapm_pga] = 8,
71 [snd_soc_dapm_adc] = 9,
72 [snd_soc_dapm_out_drv] = 10,
73 [snd_soc_dapm_hp] = 10,
74 [snd_soc_dapm_spk] = 10,
75 [snd_soc_dapm_line] = 10,
76 [snd_soc_dapm_post] = 11,
77};
78
79static int dapm_down_seq[] = {
80 [snd_soc_dapm_pre] = 0,
81 [snd_soc_dapm_adc] = 1,
82 [snd_soc_dapm_hp] = 2,
83 [snd_soc_dapm_spk] = 2,
84 [snd_soc_dapm_line] = 2,
85 [snd_soc_dapm_out_drv] = 2,
86 [snd_soc_dapm_pga] = 4,
87 [snd_soc_dapm_switch] = 5,
88 [snd_soc_dapm_mixer_named_ctl] = 5,
89 [snd_soc_dapm_mixer] = 5,
90 [snd_soc_dapm_dac] = 6,
91 [snd_soc_dapm_mic] = 7,
92 [snd_soc_dapm_micbias] = 8,
93 [snd_soc_dapm_mux] = 9,
94 [snd_soc_dapm_virt_mux] = 9,
95 [snd_soc_dapm_value_mux] = 9,
96 [snd_soc_dapm_aif_in] = 10,
97 [snd_soc_dapm_aif_out] = 10,
98 [snd_soc_dapm_dai_in] = 10,
99 [snd_soc_dapm_dai_out] = 10,
100 [snd_soc_dapm_dai_link] = 11,
101 [snd_soc_dapm_clock_supply] = 12,
102 [snd_soc_dapm_regulator_supply] = 12,
103 [snd_soc_dapm_supply] = 12,
104 [snd_soc_dapm_post] = 13,
105};
106
107static void pop_wait(u32 pop_time)
108{
109 if (pop_time)
110 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
111}
112
113static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
114{
115 va_list args;
116 char *buf;
117
118 if (!pop_time)
119 return;
120
121 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
122 if (buf == NULL)
123 return;
124
125 va_start(args, fmt);
126 vsnprintf(buf, PAGE_SIZE, fmt, args);
127 dev_info(dev, "%s", buf);
128 va_end(args);
129
130 kfree(buf);
131}
132
133static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
134{
135 return !list_empty(&w->dirty);
136}
137
138void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
139{
140 if (!dapm_dirty_widget(w)) {
141 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
142 w->name, reason);
143 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
144 }
145}
146EXPORT_SYMBOL_GPL(dapm_mark_dirty);
147
148void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
149{
150 struct snd_soc_card *card = dapm->card;
151 struct snd_soc_dapm_widget *w;
152
153 mutex_lock(&card->dapm_mutex);
154
155 list_for_each_entry(w, &card->widgets, list) {
156 switch (w->id) {
157 case snd_soc_dapm_input:
158 case snd_soc_dapm_output:
159 dapm_mark_dirty(w, "Rechecking inputs and outputs");
160 break;
161 default:
162 break;
163 }
164 }
165
166 mutex_unlock(&card->dapm_mutex);
167}
168EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
169
170
171static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
172 const struct snd_soc_dapm_widget *_widget)
173{
174 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
175}
176
177
178static inline struct snd_card *dapm_get_snd_card(
179 struct snd_soc_dapm_context *dapm)
180{
181 if (dapm->codec)
182 return dapm->codec->card->snd_card;
183 else if (dapm->platform)
184 return dapm->platform->card->snd_card;
185 else
186 BUG();
187
188
189 return NULL;
190}
191
192
193static inline struct snd_soc_card *dapm_get_soc_card(
194 struct snd_soc_dapm_context *dapm)
195{
196 if (dapm->codec)
197 return dapm->codec->card;
198 else if (dapm->platform)
199 return dapm->platform->card;
200 else
201 BUG();
202
203
204 return NULL;
205}
206
207static void dapm_reset(struct snd_soc_card *card)
208{
209 struct snd_soc_dapm_widget *w;
210
211 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
212
213 list_for_each_entry(w, &card->widgets, list) {
214 w->power_checked = false;
215 w->inputs = -1;
216 w->outputs = -1;
217 }
218}
219
220static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
221{
222 if (w->codec)
223 return snd_soc_read(w->codec, reg);
224 else if (w->platform)
225 return snd_soc_platform_read(w->platform, reg);
226
227 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
228 return -1;
229}
230
231static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
232{
233 if (w->codec)
234 return snd_soc_write(w->codec, reg, val);
235 else if (w->platform)
236 return snd_soc_platform_write(w->platform, reg, val);
237
238 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
239 return -1;
240}
241
242static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
243{
244 if (w->codec && !w->codec->using_regmap)
245 mutex_lock(&w->codec->mutex);
246 else if (w->platform)
247 mutex_lock(&w->platform->mutex);
248}
249
250static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
251{
252 if (w->codec && !w->codec->using_regmap)
253 mutex_unlock(&w->codec->mutex);
254 else if (w->platform)
255 mutex_unlock(&w->platform->mutex);
256}
257
258static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
259 unsigned short reg, unsigned int mask, unsigned int value)
260{
261 bool change;
262 unsigned int old, new;
263 int ret;
264
265 if (w->codec && w->codec->using_regmap) {
266 ret = regmap_update_bits_check(w->codec->control_data,
267 reg, mask, value, &change);
268 if (ret != 0)
269 return ret;
270 } else {
271 soc_widget_lock(w);
272 ret = soc_widget_read(w, reg);
273 if (ret < 0) {
274 soc_widget_unlock(w);
275 return ret;
276 }
277
278 old = ret;
279 new = (old & ~mask) | (value & mask);
280 change = old != new;
281 if (change) {
282 ret = soc_widget_write(w, reg, new);
283 if (ret < 0) {
284 soc_widget_unlock(w);
285 return ret;
286 }
287 }
288 soc_widget_unlock(w);
289 }
290
291 return change;
292}
293
294
295
296
297
298
299
300
301
302
303static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
304 enum snd_soc_bias_level level)
305{
306 struct snd_soc_card *card = dapm->card;
307 int ret = 0;
308
309 trace_snd_soc_bias_level_start(card, level);
310
311 if (card && card->set_bias_level)
312 ret = card->set_bias_level(card, dapm, level);
313 if (ret != 0)
314 goto out;
315
316 if (dapm->codec) {
317 if (dapm->codec->driver->set_bias_level)
318 ret = dapm->codec->driver->set_bias_level(dapm->codec,
319 level);
320 else
321 dapm->bias_level = level;
322 } else if (!card || dapm != &card->dapm) {
323 dapm->bias_level = level;
324 }
325
326 if (ret != 0)
327 goto out;
328
329 if (card && card->set_bias_level_post)
330 ret = card->set_bias_level_post(card, dapm, level);
331out:
332 trace_snd_soc_bias_level_done(card, level);
333
334 return ret;
335}
336
337
338static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
339 struct snd_soc_dapm_path *p, int i)
340{
341 switch (w->id) {
342 case snd_soc_dapm_switch:
343 case snd_soc_dapm_mixer:
344 case snd_soc_dapm_mixer_named_ctl: {
345 int val;
346 struct soc_mixer_control *mc = (struct soc_mixer_control *)
347 w->kcontrol_news[i].private_value;
348 unsigned int reg = mc->reg;
349 unsigned int shift = mc->shift;
350 int max = mc->max;
351 unsigned int mask = (1 << fls(max)) - 1;
352 unsigned int invert = mc->invert;
353
354 val = soc_widget_read(w, reg);
355 val = (val >> shift) & mask;
356 if (invert)
357 val = max - val;
358
359 p->connect = !!val;
360 }
361 break;
362 case snd_soc_dapm_mux: {
363 struct soc_enum *e = (struct soc_enum *)
364 w->kcontrol_news[i].private_value;
365 int val, item;
366
367 val = soc_widget_read(w, e->reg);
368 item = (val >> e->shift_l) & e->mask;
369
370 if (item < e->max && !strcmp(p->name, e->texts[item]))
371 p->connect = 1;
372 else
373 p->connect = 0;
374 }
375 break;
376 case snd_soc_dapm_virt_mux: {
377 struct soc_enum *e = (struct soc_enum *)
378 w->kcontrol_news[i].private_value;
379
380 p->connect = 0;
381
382
383
384
385
386
387 if (!strcmp(p->name, e->texts[0]))
388 p->connect = 1;
389 }
390 break;
391 case snd_soc_dapm_value_mux: {
392 struct soc_enum *e = (struct soc_enum *)
393 w->kcontrol_news[i].private_value;
394 int val, item;
395
396 val = soc_widget_read(w, e->reg);
397 val = (val >> e->shift_l) & e->mask;
398 for (item = 0; item < e->max; item++) {
399 if (val == e->values[item])
400 break;
401 }
402
403 if (item < e->max && !strcmp(p->name, e->texts[item]))
404 p->connect = 1;
405 else
406 p->connect = 0;
407 }
408 break;
409
410 case snd_soc_dapm_pga:
411 case snd_soc_dapm_out_drv:
412 case snd_soc_dapm_output:
413 case snd_soc_dapm_adc:
414 case snd_soc_dapm_input:
415 case snd_soc_dapm_siggen:
416 case snd_soc_dapm_dac:
417 case snd_soc_dapm_micbias:
418 case snd_soc_dapm_vmid:
419 case snd_soc_dapm_supply:
420 case snd_soc_dapm_regulator_supply:
421 case snd_soc_dapm_clock_supply:
422 case snd_soc_dapm_aif_in:
423 case snd_soc_dapm_aif_out:
424 case snd_soc_dapm_dai_in:
425 case snd_soc_dapm_dai_out:
426 case snd_soc_dapm_hp:
427 case snd_soc_dapm_mic:
428 case snd_soc_dapm_spk:
429 case snd_soc_dapm_line:
430 case snd_soc_dapm_dai_link:
431 p->connect = 1;
432 break;
433
434 case snd_soc_dapm_pre:
435 case snd_soc_dapm_post:
436 p->connect = 0;
437 break;
438 }
439}
440
441
442static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
443 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
444 struct snd_soc_dapm_path *path, const char *control_name,
445 const struct snd_kcontrol_new *kcontrol)
446{
447 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
448 int i;
449
450 for (i = 0; i < e->max; i++) {
451 if (!(strcmp(control_name, e->texts[i]))) {
452 list_add(&path->list, &dapm->card->paths);
453 list_add(&path->list_sink, &dest->sources);
454 list_add(&path->list_source, &src->sinks);
455 path->name = (char*)e->texts[i];
456 dapm_set_path_status(dest, path, 0);
457 return 0;
458 }
459 }
460
461 return -ENODEV;
462}
463
464
465static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
466 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
467 struct snd_soc_dapm_path *path, const char *control_name)
468{
469 int i;
470
471
472 for (i = 0; i < dest->num_kcontrols; i++) {
473 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
474 list_add(&path->list, &dapm->card->paths);
475 list_add(&path->list_sink, &dest->sources);
476 list_add(&path->list_source, &src->sinks);
477 path->name = dest->kcontrol_news[i].name;
478 dapm_set_path_status(dest, path, i);
479 return 0;
480 }
481 }
482 return -ENODEV;
483}
484
485static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
486 struct snd_soc_dapm_widget *kcontrolw,
487 const struct snd_kcontrol_new *kcontrol_new,
488 struct snd_kcontrol **kcontrol)
489{
490 struct snd_soc_dapm_widget *w;
491 int i;
492
493 *kcontrol = NULL;
494
495 list_for_each_entry(w, &dapm->card->widgets, list) {
496 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
497 continue;
498 for (i = 0; i < w->num_kcontrols; i++) {
499 if (&w->kcontrol_news[i] == kcontrol_new) {
500 if (w->kcontrols)
501 *kcontrol = w->kcontrols[i];
502 return 1;
503 }
504 }
505 }
506
507 return 0;
508}
509
510static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
511{
512 kfree(kctl->private_data);
513}
514
515
516
517
518
519static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
520 int kci, struct snd_soc_dapm_path *path)
521{
522 struct snd_soc_dapm_context *dapm = w->dapm;
523 struct snd_card *card = dapm->card->snd_card;
524 const char *prefix;
525 size_t prefix_len;
526 int shared;
527 struct snd_kcontrol *kcontrol;
528 struct snd_soc_dapm_widget_list *wlist;
529 int wlistentries;
530 size_t wlistsize;
531 bool wname_in_long_name, kcname_in_long_name;
532 char *long_name;
533 const char *name;
534 int ret;
535
536 if (dapm->codec)
537 prefix = dapm->codec->name_prefix;
538 else
539 prefix = NULL;
540
541 if (prefix)
542 prefix_len = strlen(prefix) + 1;
543 else
544 prefix_len = 0;
545
546 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
547 &kcontrol);
548
549 if (kcontrol) {
550 wlist = kcontrol->private_data;
551 wlistentries = wlist->num_widgets + 1;
552 } else {
553 wlist = NULL;
554 wlistentries = 1;
555 }
556
557 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
558 wlistentries * sizeof(struct snd_soc_dapm_widget *);
559 wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
560 if (wlist == NULL) {
561 dev_err(dapm->dev, "ASoC: can't allocate widget list for %s\n",
562 w->name);
563 return -ENOMEM;
564 }
565 wlist->num_widgets = wlistentries;
566 wlist->widgets[wlistentries - 1] = w;
567
568 if (!kcontrol) {
569 if (shared) {
570 wname_in_long_name = false;
571 kcname_in_long_name = true;
572 } else {
573 switch (w->id) {
574 case snd_soc_dapm_switch:
575 case snd_soc_dapm_mixer:
576 wname_in_long_name = true;
577 kcname_in_long_name = true;
578 break;
579 case snd_soc_dapm_mixer_named_ctl:
580 wname_in_long_name = false;
581 kcname_in_long_name = true;
582 break;
583 case snd_soc_dapm_mux:
584 case snd_soc_dapm_virt_mux:
585 case snd_soc_dapm_value_mux:
586 wname_in_long_name = true;
587 kcname_in_long_name = false;
588 break;
589 default:
590 kfree(wlist);
591 return -EINVAL;
592 }
593 }
594
595 if (wname_in_long_name && kcname_in_long_name) {
596
597
598
599
600
601
602 long_name = kasprintf(GFP_KERNEL, "%s %s",
603 w->name + prefix_len,
604 w->kcontrol_news[kci].name);
605 if (long_name == NULL) {
606 kfree(wlist);
607 return -ENOMEM;
608 }
609
610 name = long_name;
611 } else if (wname_in_long_name) {
612 long_name = NULL;
613 name = w->name + prefix_len;
614 } else {
615 long_name = NULL;
616 name = w->kcontrol_news[kci].name;
617 }
618
619 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], wlist, name,
620 prefix);
621 kcontrol->private_free = dapm_kcontrol_free;
622 kfree(long_name);
623 ret = snd_ctl_add(card, kcontrol);
624 if (ret < 0) {
625 dev_err(dapm->dev,
626 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
627 w->name, name, ret);
628 kfree(wlist);
629 return ret;
630 }
631 }
632
633 kcontrol->private_data = wlist;
634 w->kcontrols[kci] = kcontrol;
635 path->kcontrol = kcontrol;
636
637 return 0;
638}
639
640
641static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
642{
643 int i, ret;
644 struct snd_soc_dapm_path *path;
645
646
647 for (i = 0; i < w->num_kcontrols; i++) {
648
649 list_for_each_entry(path, &w->sources, list_sink) {
650
651 if (path->name != (char *)w->kcontrol_news[i].name)
652 continue;
653
654 if (w->kcontrols[i]) {
655 path->kcontrol = w->kcontrols[i];
656 continue;
657 }
658
659 ret = dapm_create_or_share_mixmux_kcontrol(w, i, path);
660 if (ret < 0)
661 return ret;
662 }
663 }
664
665 return 0;
666}
667
668
669static int dapm_new_mux(struct snd_soc_dapm_widget *w)
670{
671 struct snd_soc_dapm_context *dapm = w->dapm;
672 struct snd_soc_dapm_path *path;
673 int ret;
674
675 if (w->num_kcontrols != 1) {
676 dev_err(dapm->dev,
677 "ASoC: mux %s has incorrect number of controls\n",
678 w->name);
679 return -EINVAL;
680 }
681
682 if (list_empty(&w->sources)) {
683 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
684 return -EINVAL;
685 }
686
687 path = list_first_entry(&w->sources, struct snd_soc_dapm_path,
688 list_sink);
689
690 ret = dapm_create_or_share_mixmux_kcontrol(w, 0, path);
691 if (ret < 0)
692 return ret;
693
694 list_for_each_entry(path, &w->sources, list_sink)
695 path->kcontrol = w->kcontrols[0];
696
697 return 0;
698}
699
700
701static int dapm_new_pga(struct snd_soc_dapm_widget *w)
702{
703 if (w->num_kcontrols)
704 dev_err(w->dapm->dev,
705 "ASoC: PGA controls not supported: '%s'\n", w->name);
706
707 return 0;
708}
709
710
711static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
712 struct list_head *sink)
713{
714 struct snd_soc_dapm_path *p;
715
716 list_for_each_entry(p, sink, list_source) {
717 if (p->walked) {
718 p->walked = 0;
719 dapm_clear_walk_output(dapm, &p->sink->sinks);
720 }
721 }
722}
723
724static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
725 struct list_head *source)
726{
727 struct snd_soc_dapm_path *p;
728
729 list_for_each_entry(p, source, list_sink) {
730 if (p->walked) {
731 p->walked = 0;
732 dapm_clear_walk_input(dapm, &p->source->sources);
733 }
734 }
735}
736
737
738
739
740
741
742static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
743{
744 int level = snd_power_get_state(widget->dapm->card->snd_card);
745
746 switch (level) {
747 case SNDRV_CTL_POWER_D3hot:
748 case SNDRV_CTL_POWER_D3cold:
749 if (widget->ignore_suspend)
750 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
751 widget->name);
752 return widget->ignore_suspend;
753 default:
754 return 1;
755 }
756}
757
758
759static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
760 struct snd_soc_dapm_widget *w)
761{
762 struct snd_soc_dapm_widget_list *wlist;
763 int wlistsize, wlistentries, i;
764
765 if (*list == NULL)
766 return -EINVAL;
767
768 wlist = *list;
769
770
771 for (i = 0; i < wlist->num_widgets; i++) {
772 if (wlist->widgets[i] == w)
773 return 0;
774 }
775
776
777 wlistentries = wlist->num_widgets + 1;
778 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
779 wlistentries * sizeof(struct snd_soc_dapm_widget *);
780 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
781 if (*list == NULL) {
782 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
783 w->name);
784 return -ENOMEM;
785 }
786 wlist = *list;
787
788
789 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
790 w->name, wlist->num_widgets);
791
792 wlist->widgets[wlist->num_widgets] = w;
793 wlist->num_widgets++;
794 return 1;
795}
796
797
798
799
800
801static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
802 struct snd_soc_dapm_widget_list **list)
803{
804 struct snd_soc_dapm_path *path;
805 int con = 0;
806
807 if (widget->outputs >= 0)
808 return widget->outputs;
809
810 DAPM_UPDATE_STAT(widget, path_checks);
811
812 switch (widget->id) {
813 case snd_soc_dapm_supply:
814 case snd_soc_dapm_regulator_supply:
815 case snd_soc_dapm_clock_supply:
816 return 0;
817 default:
818 break;
819 }
820
821 switch (widget->id) {
822 case snd_soc_dapm_adc:
823 case snd_soc_dapm_aif_out:
824 case snd_soc_dapm_dai_out:
825 if (widget->active) {
826 widget->outputs = snd_soc_dapm_suspend_check(widget);
827 return widget->outputs;
828 }
829 default:
830 break;
831 }
832
833 if (widget->connected) {
834
835 if (widget->id == snd_soc_dapm_output && !widget->ext) {
836 widget->outputs = snd_soc_dapm_suspend_check(widget);
837 return widget->outputs;
838 }
839
840
841 if (widget->id == snd_soc_dapm_hp ||
842 widget->id == snd_soc_dapm_spk ||
843 (widget->id == snd_soc_dapm_line &&
844 !list_empty(&widget->sources))) {
845 widget->outputs = snd_soc_dapm_suspend_check(widget);
846 return widget->outputs;
847 }
848 }
849
850 list_for_each_entry(path, &widget->sinks, list_source) {
851 DAPM_UPDATE_STAT(widget, neighbour_checks);
852
853 if (path->weak)
854 continue;
855
856 if (path->walking)
857 return 1;
858
859 if (path->walked)
860 continue;
861
862 trace_snd_soc_dapm_output_path(widget, path);
863
864 if (path->sink && path->connect) {
865 path->walked = 1;
866 path->walking = 1;
867
868
869 if (list) {
870 int err;
871 err = dapm_list_add_widget(list, path->sink);
872 if (err < 0) {
873 dev_err(widget->dapm->dev,
874 "ASoC: could not add widget %s\n",
875 widget->name);
876 path->walking = 0;
877 return con;
878 }
879 }
880
881 con += is_connected_output_ep(path->sink, list);
882
883 path->walking = 0;
884 }
885 }
886
887 widget->outputs = con;
888
889 return con;
890}
891
892
893
894
895
896static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
897 struct snd_soc_dapm_widget_list **list)
898{
899 struct snd_soc_dapm_path *path;
900 int con = 0;
901
902 if (widget->inputs >= 0)
903 return widget->inputs;
904
905 DAPM_UPDATE_STAT(widget, path_checks);
906
907 switch (widget->id) {
908 case snd_soc_dapm_supply:
909 case snd_soc_dapm_regulator_supply:
910 case snd_soc_dapm_clock_supply:
911 return 0;
912 default:
913 break;
914 }
915
916
917 switch (widget->id) {
918 case snd_soc_dapm_dac:
919 case snd_soc_dapm_aif_in:
920 case snd_soc_dapm_dai_in:
921 if (widget->active) {
922 widget->inputs = snd_soc_dapm_suspend_check(widget);
923 return widget->inputs;
924 }
925 default:
926 break;
927 }
928
929 if (widget->connected) {
930
931 if (widget->id == snd_soc_dapm_input && !widget->ext) {
932 widget->inputs = snd_soc_dapm_suspend_check(widget);
933 return widget->inputs;
934 }
935
936
937 if (widget->id == snd_soc_dapm_vmid) {
938 widget->inputs = snd_soc_dapm_suspend_check(widget);
939 return widget->inputs;
940 }
941
942
943 if (widget->id == snd_soc_dapm_mic ||
944 (widget->id == snd_soc_dapm_line &&
945 !list_empty(&widget->sinks))) {
946 widget->inputs = snd_soc_dapm_suspend_check(widget);
947 return widget->inputs;
948 }
949
950
951 if (widget->id == snd_soc_dapm_siggen) {
952 widget->inputs = snd_soc_dapm_suspend_check(widget);
953 return widget->inputs;
954 }
955 }
956
957 list_for_each_entry(path, &widget->sources, list_sink) {
958 DAPM_UPDATE_STAT(widget, neighbour_checks);
959
960 if (path->weak)
961 continue;
962
963 if (path->walking)
964 return 1;
965
966 if (path->walked)
967 continue;
968
969 trace_snd_soc_dapm_input_path(widget, path);
970
971 if (path->source && path->connect) {
972 path->walked = 1;
973 path->walking = 1;
974
975
976 if (list) {
977 int err;
978 err = dapm_list_add_widget(list, path->source);
979 if (err < 0) {
980 dev_err(widget->dapm->dev,
981 "ASoC: could not add widget %s\n",
982 widget->name);
983 path->walking = 0;
984 return con;
985 }
986 }
987
988 con += is_connected_input_ep(path->source, list);
989
990 path->walking = 0;
991 }
992 }
993
994 widget->inputs = con;
995
996 return con;
997}
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1012 struct snd_soc_dapm_widget_list **list)
1013{
1014 struct snd_soc_card *card = dai->card;
1015 int paths;
1016
1017 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1018 dapm_reset(card);
1019
1020 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1021 paths = is_connected_output_ep(dai->playback_widget, list);
1022 dapm_clear_walk_output(&card->dapm,
1023 &dai->playback_widget->sinks);
1024 } else {
1025 paths = is_connected_input_ep(dai->capture_widget, list);
1026 dapm_clear_walk_input(&card->dapm,
1027 &dai->capture_widget->sources);
1028 }
1029
1030 trace_snd_soc_dapm_connected(paths, stream);
1031 mutex_unlock(&card->dapm_mutex);
1032
1033 return paths;
1034}
1035
1036
1037
1038
1039int dapm_reg_event(struct snd_soc_dapm_widget *w,
1040 struct snd_kcontrol *kcontrol, int event)
1041{
1042 unsigned int val;
1043
1044 if (SND_SOC_DAPM_EVENT_ON(event))
1045 val = w->on_val;
1046 else
1047 val = w->off_val;
1048
1049 soc_widget_update_bits_locked(w, -(w->reg + 1),
1050 w->mask << w->shift, val << w->shift);
1051
1052 return 0;
1053}
1054EXPORT_SYMBOL_GPL(dapm_reg_event);
1055
1056
1057
1058
1059int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1060 struct snd_kcontrol *kcontrol, int event)
1061{
1062 int ret;
1063
1064 if (SND_SOC_DAPM_EVENT_ON(event)) {
1065 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
1066 ret = regulator_allow_bypass(w->regulator, false);
1067 if (ret != 0)
1068 dev_warn(w->dapm->dev,
1069 "ASoC: Failed to bypass %s: %d\n",
1070 w->name, ret);
1071 }
1072
1073 return regulator_enable(w->regulator);
1074 } else {
1075 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
1076 ret = regulator_allow_bypass(w->regulator, true);
1077 if (ret != 0)
1078 dev_warn(w->dapm->dev,
1079 "ASoC: Failed to unbypass %s: %d\n",
1080 w->name, ret);
1081 }
1082
1083 return regulator_disable_deferred(w->regulator, w->shift);
1084 }
1085}
1086EXPORT_SYMBOL_GPL(dapm_regulator_event);
1087
1088
1089
1090
1091int dapm_clock_event(struct snd_soc_dapm_widget *w,
1092 struct snd_kcontrol *kcontrol, int event)
1093{
1094 if (!w->clk)
1095 return -EIO;
1096
1097#ifdef CONFIG_HAVE_CLK
1098 if (SND_SOC_DAPM_EVENT_ON(event)) {
1099 return clk_prepare_enable(w->clk);
1100 } else {
1101 clk_disable_unprepare(w->clk);
1102 return 0;
1103 }
1104#endif
1105 return 0;
1106}
1107EXPORT_SYMBOL_GPL(dapm_clock_event);
1108
1109static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1110{
1111 if (w->power_checked)
1112 return w->new_power;
1113
1114 if (w->force)
1115 w->new_power = 1;
1116 else
1117 w->new_power = w->power_check(w);
1118
1119 w->power_checked = true;
1120
1121 return w->new_power;
1122}
1123
1124
1125
1126static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1127{
1128 int in, out;
1129
1130 DAPM_UPDATE_STAT(w, power_checks);
1131
1132 in = is_connected_input_ep(w, NULL);
1133 dapm_clear_walk_input(w->dapm, &w->sources);
1134 out = is_connected_output_ep(w, NULL);
1135 dapm_clear_walk_output(w->dapm, &w->sinks);
1136 return out != 0 && in != 0;
1137}
1138
1139
1140static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1141{
1142 int in;
1143
1144 DAPM_UPDATE_STAT(w, power_checks);
1145
1146 if (w->active) {
1147 in = is_connected_input_ep(w, NULL);
1148 dapm_clear_walk_input(w->dapm, &w->sources);
1149 return in != 0;
1150 } else {
1151 return dapm_generic_check_power(w);
1152 }
1153}
1154
1155
1156static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1157{
1158 int out;
1159
1160 DAPM_UPDATE_STAT(w, power_checks);
1161
1162 if (w->active) {
1163 out = is_connected_output_ep(w, NULL);
1164 dapm_clear_walk_output(w->dapm, &w->sinks);
1165 return out != 0;
1166 } else {
1167 return dapm_generic_check_power(w);
1168 }
1169}
1170
1171
1172static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1173{
1174 struct snd_soc_dapm_path *path;
1175
1176 DAPM_UPDATE_STAT(w, power_checks);
1177
1178
1179 list_for_each_entry(path, &w->sinks, list_source) {
1180 DAPM_UPDATE_STAT(w, neighbour_checks);
1181
1182 if (path->weak)
1183 continue;
1184
1185 if (path->connected &&
1186 !path->connected(path->source, path->sink))
1187 continue;
1188
1189 if (!path->sink)
1190 continue;
1191
1192 if (dapm_widget_power_check(path->sink))
1193 return 1;
1194 }
1195
1196 return 0;
1197}
1198
1199static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1200{
1201 return 1;
1202}
1203
1204static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1205 struct snd_soc_dapm_widget *b,
1206 bool power_up)
1207{
1208 int *sort;
1209
1210 if (power_up)
1211 sort = dapm_up_seq;
1212 else
1213 sort = dapm_down_seq;
1214
1215 if (sort[a->id] != sort[b->id])
1216 return sort[a->id] - sort[b->id];
1217 if (a->subseq != b->subseq) {
1218 if (power_up)
1219 return a->subseq - b->subseq;
1220 else
1221 return b->subseq - a->subseq;
1222 }
1223 if (a->reg != b->reg)
1224 return a->reg - b->reg;
1225 if (a->dapm != b->dapm)
1226 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1227
1228 return 0;
1229}
1230
1231
1232static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1233 struct list_head *list,
1234 bool power_up)
1235{
1236 struct snd_soc_dapm_widget *w;
1237
1238 list_for_each_entry(w, list, power_list)
1239 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1240 list_add_tail(&new_widget->power_list, &w->power_list);
1241 return;
1242 }
1243
1244 list_add_tail(&new_widget->power_list, list);
1245}
1246
1247static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
1248 struct snd_soc_dapm_widget *w, int event)
1249{
1250 struct snd_soc_card *card = dapm->card;
1251 const char *ev_name;
1252 int power, ret;
1253
1254 switch (event) {
1255 case SND_SOC_DAPM_PRE_PMU:
1256 ev_name = "PRE_PMU";
1257 power = 1;
1258 break;
1259 case SND_SOC_DAPM_POST_PMU:
1260 ev_name = "POST_PMU";
1261 power = 1;
1262 break;
1263 case SND_SOC_DAPM_PRE_PMD:
1264 ev_name = "PRE_PMD";
1265 power = 0;
1266 break;
1267 case SND_SOC_DAPM_POST_PMD:
1268 ev_name = "POST_PMD";
1269 power = 0;
1270 break;
1271 case SND_SOC_DAPM_WILL_PMU:
1272 ev_name = "WILL_PMU";
1273 power = 1;
1274 break;
1275 case SND_SOC_DAPM_WILL_PMD:
1276 ev_name = "WILL_PMD";
1277 power = 0;
1278 break;
1279 default:
1280 BUG();
1281 return;
1282 }
1283
1284 if (w->power != power)
1285 return;
1286
1287 if (w->event && (w->event_flags & event)) {
1288 pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
1289 w->name, ev_name);
1290 trace_snd_soc_dapm_widget_event_start(w, event);
1291 ret = w->event(w, NULL, event);
1292 trace_snd_soc_dapm_widget_event_done(w, event);
1293 if (ret < 0)
1294 dev_err(dapm->dev, "ASoC: %s: %s event failed: %d\n",
1295 ev_name, w->name, ret);
1296 }
1297}
1298
1299
1300static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
1301 struct list_head *pending)
1302{
1303 struct snd_soc_card *card = dapm->card;
1304 struct snd_soc_dapm_widget *w;
1305 int reg, power;
1306 unsigned int value = 0;
1307 unsigned int mask = 0;
1308 unsigned int cur_mask;
1309
1310 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1311 power_list)->reg;
1312
1313 list_for_each_entry(w, pending, power_list) {
1314 cur_mask = 1 << w->shift;
1315 BUG_ON(reg != w->reg);
1316
1317 if (w->invert)
1318 power = !w->power;
1319 else
1320 power = w->power;
1321
1322 mask |= cur_mask;
1323 if (power)
1324 value |= cur_mask;
1325
1326 pop_dbg(dapm->dev, card->pop_time,
1327 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1328 w->name, reg, value, mask);
1329
1330
1331 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
1332 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
1333 }
1334
1335 if (reg >= 0) {
1336
1337
1338
1339 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1340 power_list);
1341
1342 pop_dbg(dapm->dev, card->pop_time,
1343 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1344 value, mask, reg, card->pop_time);
1345 pop_wait(card->pop_time);
1346 soc_widget_update_bits_locked(w, reg, mask, value);
1347 }
1348
1349 list_for_each_entry(w, pending, power_list) {
1350 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
1351 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
1352 }
1353}
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363static void dapm_seq_run(struct snd_soc_dapm_context *dapm,
1364 struct list_head *list, int event, bool power_up)
1365{
1366 struct snd_soc_dapm_widget *w, *n;
1367 LIST_HEAD(pending);
1368 int cur_sort = -1;
1369 int cur_subseq = -1;
1370 int cur_reg = SND_SOC_NOPM;
1371 struct snd_soc_dapm_context *cur_dapm = NULL;
1372 int ret, i;
1373 int *sort;
1374
1375 if (power_up)
1376 sort = dapm_up_seq;
1377 else
1378 sort = dapm_down_seq;
1379
1380 list_for_each_entry_safe(w, n, list, power_list) {
1381 ret = 0;
1382
1383
1384 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1385 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1386 if (!list_empty(&pending))
1387 dapm_seq_run_coalesced(cur_dapm, &pending);
1388
1389 if (cur_dapm && cur_dapm->seq_notifier) {
1390 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1391 if (sort[i] == cur_sort)
1392 cur_dapm->seq_notifier(cur_dapm,
1393 i,
1394 cur_subseq);
1395 }
1396
1397 INIT_LIST_HEAD(&pending);
1398 cur_sort = -1;
1399 cur_subseq = INT_MIN;
1400 cur_reg = SND_SOC_NOPM;
1401 cur_dapm = NULL;
1402 }
1403
1404 switch (w->id) {
1405 case snd_soc_dapm_pre:
1406 if (!w->event)
1407 list_for_each_entry_safe_continue(w, n, list,
1408 power_list);
1409
1410 if (event == SND_SOC_DAPM_STREAM_START)
1411 ret = w->event(w,
1412 NULL, SND_SOC_DAPM_PRE_PMU);
1413 else if (event == SND_SOC_DAPM_STREAM_STOP)
1414 ret = w->event(w,
1415 NULL, SND_SOC_DAPM_PRE_PMD);
1416 break;
1417
1418 case snd_soc_dapm_post:
1419 if (!w->event)
1420 list_for_each_entry_safe_continue(w, n, list,
1421 power_list);
1422
1423 if (event == SND_SOC_DAPM_STREAM_START)
1424 ret = w->event(w,
1425 NULL, SND_SOC_DAPM_POST_PMU);
1426 else if (event == SND_SOC_DAPM_STREAM_STOP)
1427 ret = w->event(w,
1428 NULL, SND_SOC_DAPM_POST_PMD);
1429 break;
1430
1431 default:
1432
1433 cur_sort = sort[w->id];
1434 cur_subseq = w->subseq;
1435 cur_reg = w->reg;
1436 cur_dapm = w->dapm;
1437 list_move(&w->power_list, &pending);
1438 break;
1439 }
1440
1441 if (ret < 0)
1442 dev_err(w->dapm->dev,
1443 "ASoC: Failed to apply widget power: %d\n", ret);
1444 }
1445
1446 if (!list_empty(&pending))
1447 dapm_seq_run_coalesced(cur_dapm, &pending);
1448
1449 if (cur_dapm && cur_dapm->seq_notifier) {
1450 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1451 if (sort[i] == cur_sort)
1452 cur_dapm->seq_notifier(cur_dapm,
1453 i, cur_subseq);
1454 }
1455}
1456
1457static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
1458{
1459 struct snd_soc_dapm_update *update = dapm->update;
1460 struct snd_soc_dapm_widget *w;
1461 int ret;
1462
1463 if (!update)
1464 return;
1465
1466 w = update->widget;
1467
1468 if (w->event &&
1469 (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1470 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1471 if (ret != 0)
1472 dev_err(dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1473 w->name, ret);
1474 }
1475
1476 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
1477 update->val);
1478 if (ret < 0)
1479 dev_err(dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1480 w->name, ret);
1481
1482 if (w->event &&
1483 (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1484 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1485 if (ret != 0)
1486 dev_err(dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1487 w->name, ret);
1488 }
1489}
1490
1491
1492
1493
1494static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1495{
1496 struct snd_soc_dapm_context *d = data;
1497 int ret;
1498
1499
1500 if (d->bias_level == SND_SOC_BIAS_OFF &&
1501 d->target_bias_level != SND_SOC_BIAS_OFF) {
1502 if (d->dev)
1503 pm_runtime_get_sync(d->dev);
1504
1505 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1506 if (ret != 0)
1507 dev_err(d->dev,
1508 "ASoC: Failed to turn on bias: %d\n", ret);
1509 }
1510
1511
1512 if (d->bias_level != d->target_bias_level) {
1513 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1514 if (ret != 0)
1515 dev_err(d->dev,
1516 "ASoC: Failed to prepare bias: %d\n", ret);
1517 }
1518}
1519
1520
1521
1522
1523static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1524{
1525 struct snd_soc_dapm_context *d = data;
1526 int ret;
1527
1528
1529 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1530 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1531 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1532 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1533 if (ret != 0)
1534 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1535 ret);
1536 }
1537
1538
1539 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1540 d->target_bias_level == SND_SOC_BIAS_OFF) {
1541 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1542 if (ret != 0)
1543 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1544 ret);
1545
1546 if (d->dev)
1547 pm_runtime_put(d->dev);
1548 }
1549
1550
1551 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1552 d->target_bias_level == SND_SOC_BIAS_ON) {
1553 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1554 if (ret != 0)
1555 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1556 ret);
1557 }
1558}
1559
1560static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1561 bool power, bool connect)
1562{
1563
1564
1565
1566 if (!connect)
1567 return;
1568
1569
1570
1571 if (power != peer->power)
1572 dapm_mark_dirty(peer, "peer state change");
1573}
1574
1575static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1576 struct list_head *up_list,
1577 struct list_head *down_list)
1578{
1579 struct snd_soc_dapm_path *path;
1580
1581 if (w->power == power)
1582 return;
1583
1584 trace_snd_soc_dapm_widget_power(w, power);
1585
1586
1587
1588
1589 list_for_each_entry(path, &w->sources, list_sink) {
1590 if (path->source) {
1591 dapm_widget_set_peer_power(path->source, power,
1592 path->connect);
1593 }
1594 }
1595 switch (w->id) {
1596 case snd_soc_dapm_supply:
1597 case snd_soc_dapm_regulator_supply:
1598 case snd_soc_dapm_clock_supply:
1599
1600 break;
1601 default:
1602 list_for_each_entry(path, &w->sinks, list_source) {
1603 if (path->sink) {
1604 dapm_widget_set_peer_power(path->sink, power,
1605 path->connect);
1606 }
1607 }
1608 break;
1609 }
1610
1611 if (power)
1612 dapm_seq_insert(w, up_list, true);
1613 else
1614 dapm_seq_insert(w, down_list, false);
1615
1616 w->power = power;
1617}
1618
1619static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1620 struct list_head *up_list,
1621 struct list_head *down_list)
1622{
1623 int power;
1624
1625 switch (w->id) {
1626 case snd_soc_dapm_pre:
1627 dapm_seq_insert(w, down_list, false);
1628 break;
1629 case snd_soc_dapm_post:
1630 dapm_seq_insert(w, up_list, true);
1631 break;
1632
1633 default:
1634 power = dapm_widget_power_check(w);
1635
1636 dapm_widget_set_power(w, power, up_list, down_list);
1637 break;
1638 }
1639}
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
1651{
1652 struct snd_soc_card *card = dapm->card;
1653 struct snd_soc_dapm_widget *w;
1654 struct snd_soc_dapm_context *d;
1655 LIST_HEAD(up_list);
1656 LIST_HEAD(down_list);
1657 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1658 enum snd_soc_bias_level bias;
1659
1660 trace_snd_soc_dapm_start(card);
1661
1662 list_for_each_entry(d, &card->dapm_list, list) {
1663 if (d->idle_bias_off)
1664 d->target_bias_level = SND_SOC_BIAS_OFF;
1665 else
1666 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1667 }
1668
1669 dapm_reset(card);
1670
1671
1672
1673
1674
1675
1676
1677 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1678 dapm_power_one_widget(w, &up_list, &down_list);
1679 }
1680
1681 list_for_each_entry(w, &card->widgets, list) {
1682 switch (w->id) {
1683 case snd_soc_dapm_pre:
1684 case snd_soc_dapm_post:
1685
1686 break;
1687 default:
1688 list_del_init(&w->dirty);
1689 break;
1690 }
1691
1692 if (w->power) {
1693 d = w->dapm;
1694
1695
1696
1697
1698
1699
1700
1701
1702 switch (w->id) {
1703 case snd_soc_dapm_siggen:
1704 break;
1705 case snd_soc_dapm_supply:
1706 case snd_soc_dapm_regulator_supply:
1707 case snd_soc_dapm_clock_supply:
1708 case snd_soc_dapm_micbias:
1709 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1710 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1711 break;
1712 default:
1713 d->target_bias_level = SND_SOC_BIAS_ON;
1714 break;
1715 }
1716 }
1717
1718 }
1719
1720
1721
1722
1723 bias = SND_SOC_BIAS_OFF;
1724 list_for_each_entry(d, &card->dapm_list, list)
1725 if (d->target_bias_level > bias)
1726 bias = d->target_bias_level;
1727 list_for_each_entry(d, &card->dapm_list, list)
1728 if (!d->idle_bias_off)
1729 d->target_bias_level = bias;
1730
1731 trace_snd_soc_dapm_walk_done(card);
1732
1733
1734 list_for_each_entry(d, &dapm->card->dapm_list, list)
1735 async_schedule_domain(dapm_pre_sequence_async, d,
1736 &async_domain);
1737 async_synchronize_full_domain(&async_domain);
1738
1739 list_for_each_entry(w, &down_list, power_list) {
1740 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_WILL_PMD);
1741 }
1742
1743 list_for_each_entry(w, &up_list, power_list) {
1744 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_WILL_PMU);
1745 }
1746
1747
1748 dapm_seq_run(dapm, &down_list, event, false);
1749
1750 dapm_widget_update(dapm);
1751
1752
1753 dapm_seq_run(dapm, &up_list, event, true);
1754
1755
1756 list_for_each_entry(d, &dapm->card->dapm_list, list)
1757 async_schedule_domain(dapm_post_sequence_async, d,
1758 &async_domain);
1759 async_synchronize_full_domain(&async_domain);
1760
1761
1762 list_for_each_entry(d, &card->dapm_list, list) {
1763 if (d->stream_event)
1764 d->stream_event(d, event);
1765 }
1766
1767 pop_dbg(dapm->dev, card->pop_time,
1768 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1769 pop_wait(card->pop_time);
1770
1771 trace_snd_soc_dapm_done(card);
1772
1773 return 0;
1774}
1775
1776#ifdef CONFIG_DEBUG_FS
1777static ssize_t dapm_widget_power_read_file(struct file *file,
1778 char __user *user_buf,
1779 size_t count, loff_t *ppos)
1780{
1781 struct snd_soc_dapm_widget *w = file->private_data;
1782 char *buf;
1783 int in, out;
1784 ssize_t ret;
1785 struct snd_soc_dapm_path *p = NULL;
1786
1787 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1788 if (!buf)
1789 return -ENOMEM;
1790
1791 in = is_connected_input_ep(w, NULL);
1792 dapm_clear_walk_input(w->dapm, &w->sources);
1793 out = is_connected_output_ep(w, NULL);
1794 dapm_clear_walk_output(w->dapm, &w->sinks);
1795
1796 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1797 w->name, w->power ? "On" : "Off",
1798 w->force ? " (forced)" : "", in, out);
1799
1800 if (w->reg >= 0)
1801 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1802 " - R%d(0x%x) bit %d",
1803 w->reg, w->reg, w->shift);
1804
1805 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1806
1807 if (w->sname)
1808 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1809 w->sname,
1810 w->active ? "active" : "inactive");
1811
1812 list_for_each_entry(p, &w->sources, list_sink) {
1813 if (p->connected && !p->connected(w, p->sink))
1814 continue;
1815
1816 if (p->connect)
1817 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1818 " in \"%s\" \"%s\"\n",
1819 p->name ? p->name : "static",
1820 p->source->name);
1821 }
1822 list_for_each_entry(p, &w->sinks, list_source) {
1823 if (p->connected && !p->connected(w, p->sink))
1824 continue;
1825
1826 if (p->connect)
1827 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1828 " out \"%s\" \"%s\"\n",
1829 p->name ? p->name : "static",
1830 p->sink->name);
1831 }
1832
1833 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1834
1835 kfree(buf);
1836 return ret;
1837}
1838
1839static const struct file_operations dapm_widget_power_fops = {
1840 .open = simple_open,
1841 .read = dapm_widget_power_read_file,
1842 .llseek = default_llseek,
1843};
1844
1845static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1846 size_t count, loff_t *ppos)
1847{
1848 struct snd_soc_dapm_context *dapm = file->private_data;
1849 char *level;
1850
1851 switch (dapm->bias_level) {
1852 case SND_SOC_BIAS_ON:
1853 level = "On\n";
1854 break;
1855 case SND_SOC_BIAS_PREPARE:
1856 level = "Prepare\n";
1857 break;
1858 case SND_SOC_BIAS_STANDBY:
1859 level = "Standby\n";
1860 break;
1861 case SND_SOC_BIAS_OFF:
1862 level = "Off\n";
1863 break;
1864 default:
1865 BUG();
1866 level = "Unknown\n";
1867 break;
1868 }
1869
1870 return simple_read_from_buffer(user_buf, count, ppos, level,
1871 strlen(level));
1872}
1873
1874static const struct file_operations dapm_bias_fops = {
1875 .open = simple_open,
1876 .read = dapm_bias_read_file,
1877 .llseek = default_llseek,
1878};
1879
1880void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1881 struct dentry *parent)
1882{
1883 struct dentry *d;
1884
1885 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1886
1887 if (!dapm->debugfs_dapm) {
1888 dev_warn(dapm->dev,
1889 "ASoC: Failed to create DAPM debugfs directory\n");
1890 return;
1891 }
1892
1893 d = debugfs_create_file("bias_level", 0444,
1894 dapm->debugfs_dapm, dapm,
1895 &dapm_bias_fops);
1896 if (!d)
1897 dev_warn(dapm->dev,
1898 "ASoC: Failed to create bias level debugfs file\n");
1899}
1900
1901static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1902{
1903 struct snd_soc_dapm_context *dapm = w->dapm;
1904 struct dentry *d;
1905
1906 if (!dapm->debugfs_dapm || !w->name)
1907 return;
1908
1909 d = debugfs_create_file(w->name, 0444,
1910 dapm->debugfs_dapm, w,
1911 &dapm_widget_power_fops);
1912 if (!d)
1913 dev_warn(w->dapm->dev,
1914 "ASoC: Failed to create %s debugfs file\n",
1915 w->name);
1916}
1917
1918static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1919{
1920 debugfs_remove_recursive(dapm->debugfs_dapm);
1921}
1922
1923#else
1924void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1925 struct dentry *parent)
1926{
1927}
1928
1929static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1930{
1931}
1932
1933static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1934{
1935}
1936
1937#endif
1938
1939
1940static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
1941 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
1942{
1943 struct snd_soc_dapm_path *path;
1944 int found = 0;
1945
1946 if (widget->id != snd_soc_dapm_mux &&
1947 widget->id != snd_soc_dapm_virt_mux &&
1948 widget->id != snd_soc_dapm_value_mux)
1949 return -ENODEV;
1950
1951
1952 list_for_each_entry(path, &widget->dapm->card->paths, list) {
1953 if (path->kcontrol != kcontrol)
1954 continue;
1955
1956 if (!path->name || !e->texts[mux])
1957 continue;
1958
1959 found = 1;
1960
1961 if (!(strcmp(path->name, e->texts[mux]))) {
1962 path->connect = 1;
1963 dapm_mark_dirty(path->source, "mux connection");
1964 } else {
1965 if (path->connect)
1966 dapm_mark_dirty(path->source,
1967 "mux disconnection");
1968 path->connect = 0;
1969 }
1970 }
1971
1972 if (found) {
1973 dapm_mark_dirty(widget, "mux change");
1974 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
1975 }
1976
1977 return found;
1978}
1979
1980int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
1981 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
1982{
1983 struct snd_soc_card *card = widget->dapm->card;
1984 int ret;
1985
1986 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1987 ret = soc_dapm_mux_update_power(widget, kcontrol, mux, e);
1988 mutex_unlock(&card->dapm_mutex);
1989 if (ret > 0)
1990 soc_dpcm_runtime_update(widget);
1991 return ret;
1992}
1993EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
1994
1995
1996static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
1997 struct snd_kcontrol *kcontrol, int connect)
1998{
1999 struct snd_soc_dapm_path *path;
2000 int found = 0;
2001
2002 if (widget->id != snd_soc_dapm_mixer &&
2003 widget->id != snd_soc_dapm_mixer_named_ctl &&
2004 widget->id != snd_soc_dapm_switch)
2005 return -ENODEV;
2006
2007
2008 list_for_each_entry(path, &widget->dapm->card->paths, list) {
2009 if (path->kcontrol != kcontrol)
2010 continue;
2011
2012
2013 found = 1;
2014 path->connect = connect;
2015 dapm_mark_dirty(path->source, "mixer connection");
2016 }
2017
2018 if (found) {
2019 dapm_mark_dirty(widget, "mixer update");
2020 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
2021 }
2022
2023 return found;
2024}
2025
2026int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
2027 struct snd_kcontrol *kcontrol, int connect)
2028{
2029 struct snd_soc_card *card = widget->dapm->card;
2030 int ret;
2031
2032 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2033 ret = soc_dapm_mixer_update_power(widget, kcontrol, connect);
2034 mutex_unlock(&card->dapm_mutex);
2035 if (ret > 0)
2036 soc_dpcm_runtime_update(widget);
2037 return ret;
2038}
2039EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2040
2041
2042static ssize_t dapm_widget_show(struct device *dev,
2043 struct device_attribute *attr, char *buf)
2044{
2045 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2046 struct snd_soc_codec *codec =rtd->codec;
2047 struct snd_soc_dapm_widget *w;
2048 int count = 0;
2049 char *state = "not set";
2050
2051 list_for_each_entry(w, &codec->card->widgets, list) {
2052 if (w->dapm != &codec->dapm)
2053 continue;
2054
2055
2056 switch (w->id) {
2057 case snd_soc_dapm_hp:
2058 case snd_soc_dapm_mic:
2059 case snd_soc_dapm_spk:
2060 case snd_soc_dapm_line:
2061 case snd_soc_dapm_micbias:
2062 case snd_soc_dapm_dac:
2063 case snd_soc_dapm_adc:
2064 case snd_soc_dapm_pga:
2065 case snd_soc_dapm_out_drv:
2066 case snd_soc_dapm_mixer:
2067 case snd_soc_dapm_mixer_named_ctl:
2068 case snd_soc_dapm_supply:
2069 case snd_soc_dapm_regulator_supply:
2070 case snd_soc_dapm_clock_supply:
2071 if (w->name)
2072 count += sprintf(buf + count, "%s: %s\n",
2073 w->name, w->power ? "On":"Off");
2074 break;
2075 default:
2076 break;
2077 }
2078 }
2079
2080 switch (codec->dapm.bias_level) {
2081 case SND_SOC_BIAS_ON:
2082 state = "On";
2083 break;
2084 case SND_SOC_BIAS_PREPARE:
2085 state = "Prepare";
2086 break;
2087 case SND_SOC_BIAS_STANDBY:
2088 state = "Standby";
2089 break;
2090 case SND_SOC_BIAS_OFF:
2091 state = "Off";
2092 break;
2093 }
2094 count += sprintf(buf + count, "PM State: %s\n", state);
2095
2096 return count;
2097}
2098
2099static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2100
2101int snd_soc_dapm_sys_add(struct device *dev)
2102{
2103 return device_create_file(dev, &dev_attr_dapm_widget);
2104}
2105
2106static void snd_soc_dapm_sys_remove(struct device *dev)
2107{
2108 device_remove_file(dev, &dev_attr_dapm_widget);
2109}
2110
2111static void dapm_free_path(struct snd_soc_dapm_path *path)
2112{
2113 list_del(&path->list_sink);
2114 list_del(&path->list_source);
2115 list_del(&path->list);
2116 kfree(path);
2117}
2118
2119
2120static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2121{
2122 struct snd_soc_dapm_widget *w, *next_w;
2123 struct snd_soc_dapm_path *p, *next_p;
2124
2125 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2126 if (w->dapm != dapm)
2127 continue;
2128 list_del(&w->list);
2129
2130
2131
2132
2133
2134 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2135 dapm_free_path(p);
2136
2137 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2138 dapm_free_path(p);
2139
2140 kfree(w->kcontrols);
2141 kfree(w->name);
2142 kfree(w);
2143 }
2144}
2145
2146static struct snd_soc_dapm_widget *dapm_find_widget(
2147 struct snd_soc_dapm_context *dapm, const char *pin,
2148 bool search_other_contexts)
2149{
2150 struct snd_soc_dapm_widget *w;
2151 struct snd_soc_dapm_widget *fallback = NULL;
2152
2153 list_for_each_entry(w, &dapm->card->widgets, list) {
2154 if (!strcmp(w->name, pin)) {
2155 if (w->dapm == dapm)
2156 return w;
2157 else
2158 fallback = w;
2159 }
2160 }
2161
2162 if (search_other_contexts)
2163 return fallback;
2164
2165 return NULL;
2166}
2167
2168static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2169 const char *pin, int status)
2170{
2171 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2172
2173 if (!w) {
2174 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2175 return -EINVAL;
2176 }
2177
2178 if (w->connected != status)
2179 dapm_mark_dirty(w, "pin configuration");
2180
2181 w->connected = status;
2182 if (status == 0)
2183 w->force = 0;
2184
2185 return 0;
2186}
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2198{
2199 int ret;
2200
2201
2202
2203
2204
2205 if (!dapm->card || !dapm->card->instantiated)
2206 return 0;
2207
2208 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2209 ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
2210 mutex_unlock(&dapm->card->dapm_mutex);
2211 return ret;
2212}
2213EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2214
2215static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2216 const struct snd_soc_dapm_route *route)
2217{
2218 struct snd_soc_dapm_path *path;
2219 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2220 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2221 const char *sink;
2222 const char *control = route->control;
2223 const char *source;
2224 char prefixed_sink[80];
2225 char prefixed_source[80];
2226 int ret = 0;
2227
2228 if (dapm->codec && dapm->codec->name_prefix) {
2229 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2230 dapm->codec->name_prefix, route->sink);
2231 sink = prefixed_sink;
2232 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2233 dapm->codec->name_prefix, route->source);
2234 source = prefixed_source;
2235 } else {
2236 sink = route->sink;
2237 source = route->source;
2238 }
2239
2240
2241
2242
2243
2244 list_for_each_entry(w, &dapm->card->widgets, list) {
2245 if (!wsink && !(strcmp(w->name, sink))) {
2246 wtsink = w;
2247 if (w->dapm == dapm)
2248 wsink = w;
2249 continue;
2250 }
2251 if (!wsource && !(strcmp(w->name, source))) {
2252 wtsource = w;
2253 if (w->dapm == dapm)
2254 wsource = w;
2255 }
2256 }
2257
2258 if (!wsink)
2259 wsink = wtsink;
2260 if (!wsource)
2261 wsource = wtsource;
2262
2263 if (wsource == NULL) {
2264 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2265 route->source);
2266 return -ENODEV;
2267 }
2268 if (wsink == NULL) {
2269 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2270 route->sink);
2271 return -ENODEV;
2272 }
2273
2274 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2275 if (!path)
2276 return -ENOMEM;
2277
2278 path->source = wsource;
2279 path->sink = wsink;
2280 path->connected = route->connected;
2281 INIT_LIST_HEAD(&path->list);
2282 INIT_LIST_HEAD(&path->list_source);
2283 INIT_LIST_HEAD(&path->list_sink);
2284
2285
2286 if (wsink->id == snd_soc_dapm_input) {
2287 if (wsource->id == snd_soc_dapm_micbias ||
2288 wsource->id == snd_soc_dapm_mic ||
2289 wsource->id == snd_soc_dapm_line ||
2290 wsource->id == snd_soc_dapm_output)
2291 wsink->ext = 1;
2292 }
2293 if (wsource->id == snd_soc_dapm_output) {
2294 if (wsink->id == snd_soc_dapm_spk ||
2295 wsink->id == snd_soc_dapm_hp ||
2296 wsink->id == snd_soc_dapm_line ||
2297 wsink->id == snd_soc_dapm_input)
2298 wsource->ext = 1;
2299 }
2300
2301
2302 if (control == NULL) {
2303 list_add(&path->list, &dapm->card->paths);
2304 list_add(&path->list_sink, &wsink->sources);
2305 list_add(&path->list_source, &wsource->sinks);
2306 path->connect = 1;
2307 return 0;
2308 }
2309
2310
2311 switch (wsink->id) {
2312 case snd_soc_dapm_adc:
2313 case snd_soc_dapm_dac:
2314 case snd_soc_dapm_pga:
2315 case snd_soc_dapm_out_drv:
2316 case snd_soc_dapm_input:
2317 case snd_soc_dapm_output:
2318 case snd_soc_dapm_siggen:
2319 case snd_soc_dapm_micbias:
2320 case snd_soc_dapm_vmid:
2321 case snd_soc_dapm_pre:
2322 case snd_soc_dapm_post:
2323 case snd_soc_dapm_supply:
2324 case snd_soc_dapm_regulator_supply:
2325 case snd_soc_dapm_clock_supply:
2326 case snd_soc_dapm_aif_in:
2327 case snd_soc_dapm_aif_out:
2328 case snd_soc_dapm_dai_in:
2329 case snd_soc_dapm_dai_out:
2330 case snd_soc_dapm_dai_link:
2331 list_add(&path->list, &dapm->card->paths);
2332 list_add(&path->list_sink, &wsink->sources);
2333 list_add(&path->list_source, &wsource->sinks);
2334 path->connect = 1;
2335 return 0;
2336 case snd_soc_dapm_mux:
2337 case snd_soc_dapm_virt_mux:
2338 case snd_soc_dapm_value_mux:
2339 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2340 &wsink->kcontrol_news[0]);
2341 if (ret != 0)
2342 goto err;
2343 break;
2344 case snd_soc_dapm_switch:
2345 case snd_soc_dapm_mixer:
2346 case snd_soc_dapm_mixer_named_ctl:
2347 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2348 if (ret != 0)
2349 goto err;
2350 break;
2351 case snd_soc_dapm_hp:
2352 case snd_soc_dapm_mic:
2353 case snd_soc_dapm_line:
2354 case snd_soc_dapm_spk:
2355 list_add(&path->list, &dapm->card->paths);
2356 list_add(&path->list_sink, &wsink->sources);
2357 list_add(&path->list_source, &wsource->sinks);
2358 path->connect = 0;
2359 return 0;
2360 }
2361
2362 dapm_mark_dirty(wsource, "Route added");
2363 dapm_mark_dirty(wsink, "Route added");
2364
2365 return 0;
2366
2367err:
2368 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2369 source, control, sink);
2370 kfree(path);
2371 return ret;
2372}
2373
2374static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2375 const struct snd_soc_dapm_route *route)
2376{
2377 struct snd_soc_dapm_path *path, *p;
2378 const char *sink;
2379 const char *source;
2380 char prefixed_sink[80];
2381 char prefixed_source[80];
2382
2383 if (route->control) {
2384 dev_err(dapm->dev,
2385 "ASoC: Removal of routes with controls not supported\n");
2386 return -EINVAL;
2387 }
2388
2389 if (dapm->codec && dapm->codec->name_prefix) {
2390 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2391 dapm->codec->name_prefix, route->sink);
2392 sink = prefixed_sink;
2393 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2394 dapm->codec->name_prefix, route->source);
2395 source = prefixed_source;
2396 } else {
2397 sink = route->sink;
2398 source = route->source;
2399 }
2400
2401 path = NULL;
2402 list_for_each_entry(p, &dapm->card->paths, list) {
2403 if (strcmp(p->source->name, source) != 0)
2404 continue;
2405 if (strcmp(p->sink->name, sink) != 0)
2406 continue;
2407 path = p;
2408 break;
2409 }
2410
2411 if (path) {
2412 dapm_mark_dirty(path->source, "Route removed");
2413 dapm_mark_dirty(path->sink, "Route removed");
2414
2415 dapm_free_path(path);
2416 } else {
2417 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2418 source, sink);
2419 }
2420
2421 return 0;
2422}
2423
2424
2425
2426
2427
2428
2429
2430
2431
2432
2433
2434
2435
2436
2437int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2438 const struct snd_soc_dapm_route *route, int num)
2439{
2440 int i, r, ret = 0;
2441
2442 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2443 for (i = 0; i < num; i++) {
2444 r = snd_soc_dapm_add_route(dapm, route);
2445 if (r < 0) {
2446 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2447 route->source,
2448 route->control ? route->control : "direct",
2449 route->sink);
2450 ret = r;
2451 }
2452 route++;
2453 }
2454 mutex_unlock(&dapm->card->dapm_mutex);
2455
2456 return ret;
2457}
2458EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2459
2460
2461
2462
2463
2464
2465
2466
2467
2468int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2469 const struct snd_soc_dapm_route *route, int num)
2470{
2471 int i, ret = 0;
2472
2473 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2474 for (i = 0; i < num; i++) {
2475 snd_soc_dapm_del_route(dapm, route);
2476 route++;
2477 }
2478 mutex_unlock(&dapm->card->dapm_mutex);
2479
2480 return ret;
2481}
2482EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2483
2484static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2485 const struct snd_soc_dapm_route *route)
2486{
2487 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2488 route->source,
2489 true);
2490 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2491 route->sink,
2492 true);
2493 struct snd_soc_dapm_path *path;
2494 int count = 0;
2495
2496 if (!source) {
2497 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2498 route->source);
2499 return -ENODEV;
2500 }
2501
2502 if (!sink) {
2503 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2504 route->sink);
2505 return -ENODEV;
2506 }
2507
2508 if (route->control || route->connected)
2509 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2510 route->source, route->sink);
2511
2512 list_for_each_entry(path, &source->sinks, list_source) {
2513 if (path->sink == sink) {
2514 path->weak = 1;
2515 count++;
2516 }
2517 }
2518
2519 if (count == 0)
2520 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2521 route->source, route->sink);
2522 if (count > 1)
2523 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2524 count, route->source, route->sink);
2525
2526 return 0;
2527}
2528
2529
2530
2531
2532
2533
2534
2535
2536
2537
2538
2539
2540
2541
2542
2543
2544
2545int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2546 const struct snd_soc_dapm_route *route, int num)
2547{
2548 int i, err;
2549 int ret = 0;
2550
2551 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2552 for (i = 0; i < num; i++) {
2553 err = snd_soc_dapm_weak_route(dapm, route);
2554 if (err)
2555 ret = err;
2556 route++;
2557 }
2558 mutex_unlock(&dapm->card->dapm_mutex);
2559
2560 return ret;
2561}
2562EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2563
2564
2565
2566
2567
2568
2569
2570
2571
2572int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
2573{
2574 struct snd_soc_dapm_widget *w;
2575 unsigned int val;
2576
2577 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2578
2579 list_for_each_entry(w, &dapm->card->widgets, list)
2580 {
2581 if (w->new)
2582 continue;
2583
2584 if (w->num_kcontrols) {
2585 w->kcontrols = kzalloc(w->num_kcontrols *
2586 sizeof(struct snd_kcontrol *),
2587 GFP_KERNEL);
2588 if (!w->kcontrols) {
2589 mutex_unlock(&dapm->card->dapm_mutex);
2590 return -ENOMEM;
2591 }
2592 }
2593
2594 switch(w->id) {
2595 case snd_soc_dapm_switch:
2596 case snd_soc_dapm_mixer:
2597 case snd_soc_dapm_mixer_named_ctl:
2598 dapm_new_mixer(w);
2599 break;
2600 case snd_soc_dapm_mux:
2601 case snd_soc_dapm_virt_mux:
2602 case snd_soc_dapm_value_mux:
2603 dapm_new_mux(w);
2604 break;
2605 case snd_soc_dapm_pga:
2606 case snd_soc_dapm_out_drv:
2607 dapm_new_pga(w);
2608 break;
2609 default:
2610 break;
2611 }
2612
2613
2614 if (w->reg >= 0) {
2615 val = soc_widget_read(w, w->reg);
2616 val &= 1 << w->shift;
2617 if (w->invert)
2618 val = !val;
2619
2620 if (val)
2621 w->power = 1;
2622 }
2623
2624 w->new = 1;
2625
2626 dapm_mark_dirty(w, "new widget");
2627 dapm_debugfs_add_widget(w);
2628 }
2629
2630 dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
2631 mutex_unlock(&dapm->card->dapm_mutex);
2632 return 0;
2633}
2634EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2635
2636
2637
2638
2639
2640
2641
2642
2643
2644
2645int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2646 struct snd_ctl_elem_value *ucontrol)
2647{
2648 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2649 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2650 struct soc_mixer_control *mc =
2651 (struct soc_mixer_control *)kcontrol->private_value;
2652 unsigned int reg = mc->reg;
2653 unsigned int shift = mc->shift;
2654 int max = mc->max;
2655 unsigned int mask = (1 << fls(max)) - 1;
2656 unsigned int invert = mc->invert;
2657
2658 if (snd_soc_volsw_is_stereo(mc))
2659 dev_warn(widget->dapm->dev,
2660 "ASoC: Control '%s' is stereo, which is not supported\n",
2661 kcontrol->id.name);
2662
2663 ucontrol->value.integer.value[0] =
2664 (snd_soc_read(widget->codec, reg) >> shift) & mask;
2665 if (invert)
2666 ucontrol->value.integer.value[0] =
2667 max - ucontrol->value.integer.value[0];
2668
2669 return 0;
2670}
2671EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2672
2673
2674
2675
2676
2677
2678
2679
2680
2681
2682int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2683 struct snd_ctl_elem_value *ucontrol)
2684{
2685 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2686 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2687 struct snd_soc_codec *codec = widget->codec;
2688 struct snd_soc_card *card = codec->card;
2689 struct soc_mixer_control *mc =
2690 (struct soc_mixer_control *)kcontrol->private_value;
2691 unsigned int reg = mc->reg;
2692 unsigned int shift = mc->shift;
2693 int max = mc->max;
2694 unsigned int mask = (1 << fls(max)) - 1;
2695 unsigned int invert = mc->invert;
2696 unsigned int val;
2697 int connect, change;
2698 struct snd_soc_dapm_update update;
2699 int wi;
2700
2701 if (snd_soc_volsw_is_stereo(mc))
2702 dev_warn(widget->dapm->dev,
2703 "ASoC: Control '%s' is stereo, which is not supported\n",
2704 kcontrol->id.name);
2705
2706 val = (ucontrol->value.integer.value[0] & mask);
2707 connect = !!val;
2708
2709 if (invert)
2710 val = max - val;
2711 mask = mask << shift;
2712 val = val << shift;
2713
2714 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2715
2716 change = snd_soc_test_bits(widget->codec, reg, mask, val);
2717 if (change) {
2718 for (wi = 0; wi < wlist->num_widgets; wi++) {
2719 widget = wlist->widgets[wi];
2720
2721 widget->value = val;
2722
2723 update.kcontrol = kcontrol;
2724 update.widget = widget;
2725 update.reg = reg;
2726 update.mask = mask;
2727 update.val = val;
2728 widget->dapm->update = &update;
2729
2730 soc_dapm_mixer_update_power(widget, kcontrol, connect);
2731
2732 widget->dapm->update = NULL;
2733 }
2734 }
2735
2736 mutex_unlock(&card->dapm_mutex);
2737 return change;
2738}
2739EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2740
2741
2742
2743
2744
2745
2746
2747
2748
2749
2750int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2751 struct snd_ctl_elem_value *ucontrol)
2752{
2753 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2754 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2755 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2756 unsigned int val;
2757
2758 val = snd_soc_read(widget->codec, e->reg);
2759 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2760 if (e->shift_l != e->shift_r)
2761 ucontrol->value.enumerated.item[1] =
2762 (val >> e->shift_r) & e->mask;
2763
2764 return 0;
2765}
2766EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2767
2768
2769
2770
2771
2772
2773
2774
2775
2776
2777int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2778 struct snd_ctl_elem_value *ucontrol)
2779{
2780 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2781 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2782 struct snd_soc_codec *codec = widget->codec;
2783 struct snd_soc_card *card = codec->card;
2784 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2785 unsigned int val, mux, change;
2786 unsigned int mask;
2787 struct snd_soc_dapm_update update;
2788 int wi;
2789
2790 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2791 return -EINVAL;
2792 mux = ucontrol->value.enumerated.item[0];
2793 val = mux << e->shift_l;
2794 mask = e->mask << e->shift_l;
2795 if (e->shift_l != e->shift_r) {
2796 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2797 return -EINVAL;
2798 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2799 mask |= e->mask << e->shift_r;
2800 }
2801
2802 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2803
2804 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
2805 if (change) {
2806 for (wi = 0; wi < wlist->num_widgets; wi++) {
2807 widget = wlist->widgets[wi];
2808
2809 widget->value = val;
2810
2811 update.kcontrol = kcontrol;
2812 update.widget = widget;
2813 update.reg = e->reg;
2814 update.mask = mask;
2815 update.val = val;
2816 widget->dapm->update = &update;
2817
2818 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
2819
2820 widget->dapm->update = NULL;
2821 }
2822 }
2823
2824 mutex_unlock(&card->dapm_mutex);
2825 return change;
2826}
2827EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2828
2829
2830
2831
2832
2833
2834
2835
2836int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2837 struct snd_ctl_elem_value *ucontrol)
2838{
2839 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2840 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2841
2842 ucontrol->value.enumerated.item[0] = widget->value;
2843
2844 return 0;
2845}
2846EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2847
2848
2849
2850
2851
2852
2853
2854
2855int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2856 struct snd_ctl_elem_value *ucontrol)
2857{
2858 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2859 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2860 struct snd_soc_codec *codec = widget->codec;
2861 struct snd_soc_card *card = codec->card;
2862 struct soc_enum *e =
2863 (struct soc_enum *)kcontrol->private_value;
2864 int change;
2865 int wi;
2866
2867 if (ucontrol->value.enumerated.item[0] >= e->max)
2868 return -EINVAL;
2869
2870 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2871
2872 change = widget->value != ucontrol->value.enumerated.item[0];
2873 if (change) {
2874 for (wi = 0; wi < wlist->num_widgets; wi++) {
2875 widget = wlist->widgets[wi];
2876
2877 widget->value = ucontrol->value.enumerated.item[0];
2878
2879 soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
2880 }
2881 }
2882
2883 mutex_unlock(&card->dapm_mutex);
2884 return change;
2885}
2886EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
2887
2888
2889
2890
2891
2892
2893
2894
2895
2896
2897
2898
2899
2900
2901int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
2902 struct snd_ctl_elem_value *ucontrol)
2903{
2904 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2905 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2906 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2907 unsigned int reg_val, val, mux;
2908
2909 reg_val = snd_soc_read(widget->codec, e->reg);
2910 val = (reg_val >> e->shift_l) & e->mask;
2911 for (mux = 0; mux < e->max; mux++) {
2912 if (val == e->values[mux])
2913 break;
2914 }
2915 ucontrol->value.enumerated.item[0] = mux;
2916 if (e->shift_l != e->shift_r) {
2917 val = (reg_val >> e->shift_r) & e->mask;
2918 for (mux = 0; mux < e->max; mux++) {
2919 if (val == e->values[mux])
2920 break;
2921 }
2922 ucontrol->value.enumerated.item[1] = mux;
2923 }
2924
2925 return 0;
2926}
2927EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
2928
2929
2930
2931
2932
2933
2934
2935
2936
2937
2938
2939
2940
2941
2942int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
2943 struct snd_ctl_elem_value *ucontrol)
2944{
2945 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2946 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2947 struct snd_soc_codec *codec = widget->codec;
2948 struct snd_soc_card *card = codec->card;
2949 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2950 unsigned int val, mux, change;
2951 unsigned int mask;
2952 struct snd_soc_dapm_update update;
2953 int wi;
2954
2955 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2956 return -EINVAL;
2957 mux = ucontrol->value.enumerated.item[0];
2958 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2959 mask = e->mask << e->shift_l;
2960 if (e->shift_l != e->shift_r) {
2961 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2962 return -EINVAL;
2963 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2964 mask |= e->mask << e->shift_r;
2965 }
2966
2967 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2968
2969 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
2970 if (change) {
2971 for (wi = 0; wi < wlist->num_widgets; wi++) {
2972 widget = wlist->widgets[wi];
2973
2974 widget->value = val;
2975
2976 update.kcontrol = kcontrol;
2977 update.widget = widget;
2978 update.reg = e->reg;
2979 update.mask = mask;
2980 update.val = val;
2981 widget->dapm->update = &update;
2982
2983 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
2984
2985 widget->dapm->update = NULL;
2986 }
2987 }
2988
2989 mutex_unlock(&card->dapm_mutex);
2990 return change;
2991}
2992EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
2993
2994
2995
2996
2997
2998
2999
3000
3001
3002int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3003 struct snd_ctl_elem_info *uinfo)
3004{
3005 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3006 uinfo->count = 1;
3007 uinfo->value.integer.min = 0;
3008 uinfo->value.integer.max = 1;
3009
3010 return 0;
3011}
3012EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3013
3014
3015
3016
3017
3018
3019
3020int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3021 struct snd_ctl_elem_value *ucontrol)
3022{
3023 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3024 const char *pin = (const char *)kcontrol->private_value;
3025
3026 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3027
3028 ucontrol->value.integer.value[0] =
3029 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3030
3031 mutex_unlock(&card->dapm_mutex);
3032
3033 return 0;
3034}
3035EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3036
3037
3038
3039
3040
3041
3042
3043int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3044 struct snd_ctl_elem_value *ucontrol)
3045{
3046 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3047 const char *pin = (const char *)kcontrol->private_value;
3048
3049 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3050
3051 if (ucontrol->value.integer.value[0])
3052 snd_soc_dapm_enable_pin(&card->dapm, pin);
3053 else
3054 snd_soc_dapm_disable_pin(&card->dapm, pin);
3055
3056 mutex_unlock(&card->dapm_mutex);
3057
3058 snd_soc_dapm_sync(&card->dapm);
3059 return 0;
3060}
3061EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3062
3063static struct snd_soc_dapm_widget *
3064snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3065 const struct snd_soc_dapm_widget *widget)
3066{
3067 struct snd_soc_dapm_widget *w;
3068 int ret;
3069
3070 if ((w = dapm_cnew_widget(widget)) == NULL)
3071 return NULL;
3072
3073 switch (w->id) {
3074 case snd_soc_dapm_regulator_supply:
3075 w->regulator = devm_regulator_get(dapm->dev, w->name);
3076 if (IS_ERR(w->regulator)) {
3077 ret = PTR_ERR(w->regulator);
3078 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3079 w->name, ret);
3080 return NULL;
3081 }
3082
3083 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
3084 ret = regulator_allow_bypass(w->regulator, true);
3085 if (ret != 0)
3086 dev_warn(w->dapm->dev,
3087 "ASoC: Failed to unbypass %s: %d\n",
3088 w->name, ret);
3089 }
3090 break;
3091 case snd_soc_dapm_clock_supply:
3092#ifdef CONFIG_CLKDEV_LOOKUP
3093 w->clk = devm_clk_get(dapm->dev, w->name);
3094 if (IS_ERR(w->clk)) {
3095 ret = PTR_ERR(w->clk);
3096 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3097 w->name, ret);
3098 return NULL;
3099 }
3100#else
3101 return NULL;
3102#endif
3103 break;
3104 default:
3105 break;
3106 }
3107
3108 if (dapm->codec && dapm->codec->name_prefix)
3109 w->name = kasprintf(GFP_KERNEL, "%s %s",
3110 dapm->codec->name_prefix, widget->name);
3111 else
3112 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3113
3114 if (w->name == NULL) {
3115 kfree(w);
3116 return NULL;
3117 }
3118
3119 switch (w->id) {
3120 case snd_soc_dapm_switch:
3121 case snd_soc_dapm_mixer:
3122 case snd_soc_dapm_mixer_named_ctl:
3123 w->power_check = dapm_generic_check_power;
3124 break;
3125 case snd_soc_dapm_mux:
3126 case snd_soc_dapm_virt_mux:
3127 case snd_soc_dapm_value_mux:
3128 w->power_check = dapm_generic_check_power;
3129 break;
3130 case snd_soc_dapm_adc:
3131 case snd_soc_dapm_aif_out:
3132 case snd_soc_dapm_dai_out:
3133 w->power_check = dapm_adc_check_power;
3134 break;
3135 case snd_soc_dapm_dac:
3136 case snd_soc_dapm_aif_in:
3137 case snd_soc_dapm_dai_in:
3138 w->power_check = dapm_dac_check_power;
3139 break;
3140 case snd_soc_dapm_pga:
3141 case snd_soc_dapm_out_drv:
3142 case snd_soc_dapm_input:
3143 case snd_soc_dapm_output:
3144 case snd_soc_dapm_micbias:
3145 case snd_soc_dapm_spk:
3146 case snd_soc_dapm_hp:
3147 case snd_soc_dapm_mic:
3148 case snd_soc_dapm_line:
3149 case snd_soc_dapm_dai_link:
3150 w->power_check = dapm_generic_check_power;
3151 break;
3152 case snd_soc_dapm_supply:
3153 case snd_soc_dapm_regulator_supply:
3154 case snd_soc_dapm_clock_supply:
3155 w->power_check = dapm_supply_check_power;
3156 break;
3157 default:
3158 w->power_check = dapm_always_on_check_power;
3159 break;
3160 }
3161
3162 w->dapm = dapm;
3163 w->codec = dapm->codec;
3164 w->platform = dapm->platform;
3165 INIT_LIST_HEAD(&w->sources);
3166 INIT_LIST_HEAD(&w->sinks);
3167 INIT_LIST_HEAD(&w->list);
3168 INIT_LIST_HEAD(&w->dirty);
3169 list_add(&w->list, &dapm->card->widgets);
3170
3171
3172 w->connected = 1;
3173 return w;
3174}
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3187 const struct snd_soc_dapm_widget *widget,
3188 int num)
3189{
3190 struct snd_soc_dapm_widget *w;
3191 int i;
3192 int ret = 0;
3193
3194 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3195 for (i = 0; i < num; i++) {
3196 w = snd_soc_dapm_new_control(dapm, widget);
3197 if (!w) {
3198 dev_err(dapm->dev,
3199 "ASoC: Failed to create DAPM control %s\n",
3200 widget->name);
3201 ret = -ENOMEM;
3202 break;
3203 }
3204 widget++;
3205 }
3206 mutex_unlock(&dapm->card->dapm_mutex);
3207 return ret;
3208}
3209EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3210
3211static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3212 struct snd_kcontrol *kcontrol, int event)
3213{
3214 struct snd_soc_dapm_path *source_p, *sink_p;
3215 struct snd_soc_dai *source, *sink;
3216 const struct snd_soc_pcm_stream *config = w->params;
3217 struct snd_pcm_substream substream;
3218 struct snd_pcm_hw_params *params = NULL;
3219 u64 fmt;
3220 int ret;
3221
3222 BUG_ON(!config);
3223 BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks));
3224
3225
3226 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3227 list_sink);
3228 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3229 list_source);
3230
3231 BUG_ON(!source_p || !sink_p);
3232 BUG_ON(!sink_p->source || !source_p->sink);
3233 BUG_ON(!source_p->source || !sink_p->sink);
3234
3235 source = source_p->source->priv;
3236 sink = sink_p->sink->priv;
3237
3238
3239 if (config->formats) {
3240 fmt = ffs(config->formats) - 1;
3241 } else {
3242 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3243 config->formats);
3244 fmt = 0;
3245 }
3246
3247
3248 params = kzalloc(sizeof(*params), GFP_KERNEL);
3249 if (!params) {
3250 ret = -ENOMEM;
3251 goto out;
3252 }
3253 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3254
3255 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3256 config->rate_min;
3257 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3258 config->rate_max;
3259
3260 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3261 = config->channels_min;
3262 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3263 = config->channels_max;
3264
3265 memset(&substream, 0, sizeof(substream));
3266
3267 switch (event) {
3268 case SND_SOC_DAPM_PRE_PMU:
3269 if (source->driver->ops && source->driver->ops->hw_params) {
3270 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3271 ret = source->driver->ops->hw_params(&substream,
3272 params, source);
3273 if (ret != 0) {
3274 dev_err(source->dev,
3275 "ASoC: hw_params() failed: %d\n", ret);
3276 goto out;
3277 }
3278 }
3279
3280 if (sink->driver->ops && sink->driver->ops->hw_params) {
3281 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3282 ret = sink->driver->ops->hw_params(&substream, params,
3283 sink);
3284 if (ret != 0) {
3285 dev_err(sink->dev,
3286 "ASoC: hw_params() failed: %d\n", ret);
3287 goto out;
3288 }
3289 }
3290 break;
3291
3292 case SND_SOC_DAPM_POST_PMU:
3293 ret = snd_soc_dai_digital_mute(sink, 0,
3294 SNDRV_PCM_STREAM_PLAYBACK);
3295 if (ret != 0 && ret != -ENOTSUPP)
3296 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3297 ret = 0;
3298 break;
3299
3300 case SND_SOC_DAPM_PRE_PMD:
3301 ret = snd_soc_dai_digital_mute(sink, 1,
3302 SNDRV_PCM_STREAM_PLAYBACK);
3303 if (ret != 0 && ret != -ENOTSUPP)
3304 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3305 ret = 0;
3306 break;
3307
3308 default:
3309 BUG();
3310 return -EINVAL;
3311 }
3312
3313out:
3314 kfree(params);
3315 return ret;
3316}
3317
3318int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3319 const struct snd_soc_pcm_stream *params,
3320 struct snd_soc_dapm_widget *source,
3321 struct snd_soc_dapm_widget *sink)
3322{
3323 struct snd_soc_dapm_route routes[2];
3324 struct snd_soc_dapm_widget template;
3325 struct snd_soc_dapm_widget *w;
3326 size_t len;
3327 char *link_name;
3328
3329 len = strlen(source->name) + strlen(sink->name) + 2;
3330 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3331 if (!link_name)
3332 return -ENOMEM;
3333 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3334
3335 memset(&template, 0, sizeof(template));
3336 template.reg = SND_SOC_NOPM;
3337 template.id = snd_soc_dapm_dai_link;
3338 template.name = link_name;
3339 template.event = snd_soc_dai_link_event;
3340 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3341 SND_SOC_DAPM_PRE_PMD;
3342
3343 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3344
3345 w = snd_soc_dapm_new_control(&card->dapm, &template);
3346 if (!w) {
3347 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3348 link_name);
3349 return -ENOMEM;
3350 }
3351
3352 w->params = params;
3353
3354 memset(&routes, 0, sizeof(routes));
3355
3356 routes[0].source = source->name;
3357 routes[0].sink = link_name;
3358 routes[1].source = link_name;
3359 routes[1].sink = sink->name;
3360
3361 return snd_soc_dapm_add_routes(&card->dapm, routes,
3362 ARRAY_SIZE(routes));
3363}
3364
3365int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3366 struct snd_soc_dai *dai)
3367{
3368 struct snd_soc_dapm_widget template;
3369 struct snd_soc_dapm_widget *w;
3370
3371 WARN_ON(dapm->dev != dai->dev);
3372
3373 memset(&template, 0, sizeof(template));
3374 template.reg = SND_SOC_NOPM;
3375
3376 if (dai->driver->playback.stream_name) {
3377 template.id = snd_soc_dapm_dai_in;
3378 template.name = dai->driver->playback.stream_name;
3379 template.sname = dai->driver->playback.stream_name;
3380
3381 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3382 template.name);
3383
3384 w = snd_soc_dapm_new_control(dapm, &template);
3385 if (!w) {
3386 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3387 dai->driver->playback.stream_name);
3388 }
3389
3390 w->priv = dai;
3391 dai->playback_widget = w;
3392 }
3393
3394 if (dai->driver->capture.stream_name) {
3395 template.id = snd_soc_dapm_dai_out;
3396 template.name = dai->driver->capture.stream_name;
3397 template.sname = dai->driver->capture.stream_name;
3398
3399 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3400 template.name);
3401
3402 w = snd_soc_dapm_new_control(dapm, &template);
3403 if (!w) {
3404 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3405 dai->driver->capture.stream_name);
3406 }
3407
3408 w->priv = dai;
3409 dai->capture_widget = w;
3410 }
3411
3412 return 0;
3413}
3414
3415int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3416{
3417 struct snd_soc_dapm_widget *dai_w, *w;
3418 struct snd_soc_dai *dai;
3419 struct snd_soc_dapm_route r;
3420
3421 memset(&r, 0, sizeof(r));
3422
3423
3424 list_for_each_entry(dai_w, &card->widgets, list) {
3425 switch (dai_w->id) {
3426 case snd_soc_dapm_dai_in:
3427 case snd_soc_dapm_dai_out:
3428 break;
3429 default:
3430 continue;
3431 }
3432
3433 dai = dai_w->priv;
3434
3435
3436 list_for_each_entry(w, &card->widgets, list) {
3437 if (w->dapm != dai_w->dapm)
3438 continue;
3439
3440 switch (w->id) {
3441 case snd_soc_dapm_dai_in:
3442 case snd_soc_dapm_dai_out:
3443 continue;
3444 default:
3445 break;
3446 }
3447
3448 if (!w->sname)
3449 continue;
3450
3451 if (dai->driver->playback.stream_name &&
3452 strstr(w->sname,
3453 dai->driver->playback.stream_name)) {
3454 r.source = dai->playback_widget->name;
3455 r.sink = w->name;
3456 dev_dbg(dai->dev, "%s -> %s\n",
3457 r.source, r.sink);
3458
3459 snd_soc_dapm_add_route(w->dapm, &r);
3460 }
3461
3462 if (dai->driver->capture.stream_name &&
3463 strstr(w->sname,
3464 dai->driver->capture.stream_name)) {
3465 r.source = w->name;
3466 r.sink = dai->capture_widget->name;
3467 dev_dbg(dai->dev, "%s -> %s\n",
3468 r.source, r.sink);
3469
3470 snd_soc_dapm_add_route(w->dapm, &r);
3471 }
3472 }
3473 }
3474
3475 return 0;
3476}
3477
3478static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3479 int event)
3480{
3481
3482 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3483 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3484 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3485
3486 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3487 w_cpu = cpu_dai->playback_widget;
3488 w_codec = codec_dai->playback_widget;
3489 } else {
3490 w_cpu = cpu_dai->capture_widget;
3491 w_codec = codec_dai->capture_widget;
3492 }
3493
3494 if (w_cpu) {
3495
3496 dapm_mark_dirty(w_cpu, "stream event");
3497
3498 switch (event) {
3499 case SND_SOC_DAPM_STREAM_START:
3500 w_cpu->active = 1;
3501 break;
3502 case SND_SOC_DAPM_STREAM_STOP:
3503 w_cpu->active = 0;
3504 break;
3505 case SND_SOC_DAPM_STREAM_SUSPEND:
3506 case SND_SOC_DAPM_STREAM_RESUME:
3507 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3508 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3509 break;
3510 }
3511 }
3512
3513 if (w_codec) {
3514
3515 dapm_mark_dirty(w_codec, "stream event");
3516
3517 switch (event) {
3518 case SND_SOC_DAPM_STREAM_START:
3519 w_codec->active = 1;
3520 break;
3521 case SND_SOC_DAPM_STREAM_STOP:
3522 w_codec->active = 0;
3523 break;
3524 case SND_SOC_DAPM_STREAM_SUSPEND:
3525 case SND_SOC_DAPM_STREAM_RESUME:
3526 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3527 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3528 break;
3529 }
3530 }
3531
3532 dapm_power_widgets(&rtd->card->dapm, event);
3533}
3534
3535
3536
3537
3538
3539
3540
3541
3542
3543
3544
3545
3546void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3547 int event)
3548{
3549 struct snd_soc_card *card = rtd->card;
3550
3551 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3552 soc_dapm_stream_event(rtd, stream, event);
3553 mutex_unlock(&card->dapm_mutex);
3554}
3555
3556
3557
3558
3559
3560
3561
3562
3563
3564
3565
3566int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3567{
3568 return snd_soc_dapm_set_pin(dapm, pin, 1);
3569}
3570EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3571
3572
3573
3574
3575
3576
3577
3578
3579
3580
3581
3582
3583
3584int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3585 const char *pin)
3586{
3587 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3588
3589 if (!w) {
3590 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3591 return -EINVAL;
3592 }
3593
3594 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3595 w->connected = 1;
3596 w->force = 1;
3597 dapm_mark_dirty(w, "force enable");
3598
3599 return 0;
3600}
3601EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3602
3603
3604
3605
3606
3607
3608
3609
3610
3611
3612int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3613 const char *pin)
3614{
3615 return snd_soc_dapm_set_pin(dapm, pin, 0);
3616}
3617EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3618
3619
3620
3621
3622
3623
3624
3625
3626
3627
3628
3629
3630
3631
3632
3633int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3634{
3635 return snd_soc_dapm_set_pin(dapm, pin, 0);
3636}
3637EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3638
3639
3640
3641
3642
3643
3644
3645
3646
3647
3648int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3649 const char *pin)
3650{
3651 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3652
3653 if (w)
3654 return w->connected;
3655
3656 return 0;
3657}
3658EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3659
3660
3661
3662
3663
3664
3665
3666
3667
3668
3669
3670
3671int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3672 const char *pin)
3673{
3674 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3675
3676 if (!w) {
3677 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3678 return -EINVAL;
3679 }
3680
3681 w->ignore_suspend = 1;
3682
3683 return 0;
3684}
3685EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3686
3687static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3688 struct snd_soc_dapm_widget *w)
3689{
3690 struct snd_soc_dapm_path *p;
3691
3692 list_for_each_entry(p, &card->paths, list) {
3693 if ((p->source == w) || (p->sink == w)) {
3694 dev_dbg(card->dev,
3695 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3696 p->source->name, p->source->id, p->source->dapm,
3697 p->sink->name, p->sink->id, p->sink->dapm);
3698
3699
3700 if (p->source->dapm != p->sink->dapm)
3701 return true;
3702
3703
3704
3705
3706 if (p->sink->id == snd_soc_dapm_input) {
3707 switch (p->source->id) {
3708 case snd_soc_dapm_output:
3709 case snd_soc_dapm_micbias:
3710 return true;
3711 default:
3712 break;
3713 }
3714 }
3715 }
3716 }
3717
3718 return false;
3719}
3720
3721
3722
3723
3724
3725
3726
3727
3728
3729
3730void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3731{
3732 struct snd_soc_card *card = codec->card;
3733 struct snd_soc_dapm_context *dapm = &codec->dapm;
3734 struct snd_soc_dapm_widget *w;
3735
3736 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3737 &card->dapm, &codec->dapm);
3738
3739 list_for_each_entry(w, &card->widgets, list) {
3740 if (w->dapm != dapm)
3741 continue;
3742 switch (w->id) {
3743 case snd_soc_dapm_input:
3744 case snd_soc_dapm_output:
3745 case snd_soc_dapm_micbias:
3746 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3747 w->name);
3748 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3749 dev_dbg(codec->dev,
3750 "... Not in map; disabling\n");
3751 snd_soc_dapm_nc_pin(dapm, w->name);
3752 }
3753 break;
3754 default:
3755 break;
3756 }
3757 }
3758}
3759
3760
3761
3762
3763
3764
3765
3766void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3767{
3768 snd_soc_dapm_sys_remove(dapm->dev);
3769 dapm_debugfs_cleanup(dapm);
3770 dapm_free_widgets(dapm);
3771 list_del(&dapm->list);
3772}
3773EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3774
3775static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
3776{
3777 struct snd_soc_card *card = dapm->card;
3778 struct snd_soc_dapm_widget *w;
3779 LIST_HEAD(down_list);
3780 int powerdown = 0;
3781
3782 mutex_lock(&card->dapm_mutex);
3783
3784 list_for_each_entry(w, &dapm->card->widgets, list) {
3785 if (w->dapm != dapm)
3786 continue;
3787 if (w->power) {
3788 dapm_seq_insert(w, &down_list, false);
3789 w->power = 0;
3790 powerdown = 1;
3791 }
3792 }
3793
3794
3795
3796
3797 if (powerdown) {
3798 if (dapm->bias_level == SND_SOC_BIAS_ON)
3799 snd_soc_dapm_set_bias_level(dapm,
3800 SND_SOC_BIAS_PREPARE);
3801 dapm_seq_run(dapm, &down_list, 0, false);
3802 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3803 snd_soc_dapm_set_bias_level(dapm,
3804 SND_SOC_BIAS_STANDBY);
3805 }
3806
3807 mutex_unlock(&card->dapm_mutex);
3808}
3809
3810
3811
3812
3813void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3814{
3815 struct snd_soc_codec *codec;
3816
3817 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
3818 soc_dapm_shutdown_codec(&codec->dapm);
3819 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3820 snd_soc_dapm_set_bias_level(&codec->dapm,
3821 SND_SOC_BIAS_OFF);
3822 }
3823}
3824
3825
3826MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3827MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3828MODULE_LICENSE("GPL");
3829