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20#include <linux/module.h>
21#include <linux/init.h>
22#include <linux/async.h>
23#include <linux/delay.h>
24#include <linux/pm.h>
25#include <linux/bitops.h>
26#include <linux/platform_device.h>
27#include <linux/jiffies.h>
28#include <linux/debugfs.h>
29#include <linux/pm_runtime.h>
30#include <linux/regulator/consumer.h>
31#include <linux/pinctrl/consumer.h>
32#include <linux/clk.h>
33#include <linux/slab.h>
34#include <sound/core.h>
35#include <sound/pcm.h>
36#include <sound/pcm_params.h>
37#include <sound/soc.h>
38#include <sound/initval.h>
39
40#include <trace/events/asoc.h>
41
42#define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
43
44#define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
46
47#define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
49 (dir)++)
50
51static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
52 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
53 const char *control,
54 int (*connected)(struct snd_soc_dapm_widget *source,
55 struct snd_soc_dapm_widget *sink));
56
57struct snd_soc_dapm_widget *
58snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
59 const struct snd_soc_dapm_widget *widget);
60
61struct snd_soc_dapm_widget *
62snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
63 const struct snd_soc_dapm_widget *widget);
64
65
66static int dapm_up_seq[] = {
67 [snd_soc_dapm_pre] = 1,
68 [snd_soc_dapm_regulator_supply] = 2,
69 [snd_soc_dapm_pinctrl] = 2,
70 [snd_soc_dapm_clock_supply] = 2,
71 [snd_soc_dapm_supply] = 3,
72 [snd_soc_dapm_micbias] = 4,
73 [snd_soc_dapm_vmid] = 4,
74 [snd_soc_dapm_dai_link] = 3,
75 [snd_soc_dapm_dai_in] = 5,
76 [snd_soc_dapm_dai_out] = 5,
77 [snd_soc_dapm_aif_in] = 5,
78 [snd_soc_dapm_aif_out] = 5,
79 [snd_soc_dapm_mic] = 6,
80 [snd_soc_dapm_siggen] = 6,
81 [snd_soc_dapm_input] = 6,
82 [snd_soc_dapm_output] = 6,
83 [snd_soc_dapm_mux] = 7,
84 [snd_soc_dapm_demux] = 7,
85 [snd_soc_dapm_dac] = 8,
86 [snd_soc_dapm_switch] = 9,
87 [snd_soc_dapm_mixer] = 9,
88 [snd_soc_dapm_mixer_named_ctl] = 9,
89 [snd_soc_dapm_pga] = 10,
90 [snd_soc_dapm_buffer] = 10,
91 [snd_soc_dapm_scheduler] = 10,
92 [snd_soc_dapm_effect] = 10,
93 [snd_soc_dapm_src] = 10,
94 [snd_soc_dapm_asrc] = 10,
95 [snd_soc_dapm_encoder] = 10,
96 [snd_soc_dapm_decoder] = 10,
97 [snd_soc_dapm_adc] = 11,
98 [snd_soc_dapm_out_drv] = 12,
99 [snd_soc_dapm_hp] = 12,
100 [snd_soc_dapm_spk] = 12,
101 [snd_soc_dapm_line] = 12,
102 [snd_soc_dapm_sink] = 12,
103 [snd_soc_dapm_kcontrol] = 13,
104 [snd_soc_dapm_post] = 14,
105};
106
107static int dapm_down_seq[] = {
108 [snd_soc_dapm_pre] = 1,
109 [snd_soc_dapm_kcontrol] = 2,
110 [snd_soc_dapm_adc] = 3,
111 [snd_soc_dapm_hp] = 4,
112 [snd_soc_dapm_spk] = 4,
113 [snd_soc_dapm_line] = 4,
114 [snd_soc_dapm_out_drv] = 4,
115 [snd_soc_dapm_sink] = 4,
116 [snd_soc_dapm_pga] = 5,
117 [snd_soc_dapm_buffer] = 5,
118 [snd_soc_dapm_scheduler] = 5,
119 [snd_soc_dapm_effect] = 5,
120 [snd_soc_dapm_src] = 5,
121 [snd_soc_dapm_asrc] = 5,
122 [snd_soc_dapm_encoder] = 5,
123 [snd_soc_dapm_decoder] = 5,
124 [snd_soc_dapm_switch] = 6,
125 [snd_soc_dapm_mixer_named_ctl] = 6,
126 [snd_soc_dapm_mixer] = 6,
127 [snd_soc_dapm_dac] = 7,
128 [snd_soc_dapm_mic] = 8,
129 [snd_soc_dapm_siggen] = 8,
130 [snd_soc_dapm_input] = 8,
131 [snd_soc_dapm_output] = 8,
132 [snd_soc_dapm_micbias] = 9,
133 [snd_soc_dapm_vmid] = 9,
134 [snd_soc_dapm_mux] = 10,
135 [snd_soc_dapm_demux] = 10,
136 [snd_soc_dapm_aif_in] = 11,
137 [snd_soc_dapm_aif_out] = 11,
138 [snd_soc_dapm_dai_in] = 11,
139 [snd_soc_dapm_dai_out] = 11,
140 [snd_soc_dapm_dai_link] = 12,
141 [snd_soc_dapm_supply] = 13,
142 [snd_soc_dapm_clock_supply] = 14,
143 [snd_soc_dapm_pinctrl] = 14,
144 [snd_soc_dapm_regulator_supply] = 14,
145 [snd_soc_dapm_post] = 15,
146};
147
148static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
149{
150 if (dapm->card && dapm->card->instantiated)
151 lockdep_assert_held(&dapm->card->dapm_mutex);
152}
153
154static void pop_wait(u32 pop_time)
155{
156 if (pop_time)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
158}
159
160__printf(3, 4)
161static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
162{
163 va_list args;
164 char *buf;
165
166 if (!pop_time)
167 return;
168
169 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
170 if (buf == NULL)
171 return;
172
173 va_start(args, fmt);
174 vsnprintf(buf, PAGE_SIZE, fmt, args);
175 dev_info(dev, "%s", buf);
176 va_end(args);
177
178 kfree(buf);
179}
180
181static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
182{
183 return !list_empty(&w->dirty);
184}
185
186static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
187{
188 dapm_assert_locked(w->dapm);
189
190 if (!dapm_dirty_widget(w)) {
191 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
192 w->name, reason);
193 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
194 }
195}
196
197
198
199
200
201
202
203
204static __always_inline void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
206{
207 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
208 struct snd_soc_dapm_widget *node;
209 struct snd_soc_dapm_path *p;
210 LIST_HEAD(list);
211
212 dapm_assert_locked(w->dapm);
213
214 if (w->endpoints[dir] == -1)
215 return;
216
217 list_add_tail(&w->work_list, &list);
218 w->endpoints[dir] = -1;
219
220 list_for_each_entry(w, &list, work_list) {
221 snd_soc_dapm_widget_for_each_path(w, dir, p) {
222 if (p->is_supply || p->weak || !p->connect)
223 continue;
224 node = p->node[rdir];
225 if (node->endpoints[dir] != -1) {
226 node->endpoints[dir] = -1;
227 list_add_tail(&node->work_list, &list);
228 }
229 }
230 }
231}
232
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242
243
244
245static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
246{
247 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
248}
249
250
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259
260
261
262static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
263{
264 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
265}
266
267
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271
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273
274
275
276
277
278static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
279{
280
281
282
283
284 if (p->weak || p->is_supply)
285 return;
286
287
288
289
290
291
292
293 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
294 dapm_widget_invalidate_input_paths(p->sink);
295 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
296 dapm_widget_invalidate_output_paths(p->source);
297}
298
299void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
300{
301 struct snd_soc_dapm_widget *w;
302
303 mutex_lock(&card->dapm_mutex);
304
305 for_each_card_widgets(card, w) {
306 if (w->is_ep) {
307 dapm_mark_dirty(w, "Rechecking endpoints");
308 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
309 dapm_widget_invalidate_output_paths(w);
310 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
311 dapm_widget_invalidate_input_paths(w);
312 }
313 }
314
315 mutex_unlock(&card->dapm_mutex);
316}
317EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
318
319
320static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
321 const struct snd_soc_dapm_widget *_widget)
322{
323 struct snd_soc_dapm_widget *w;
324
325 w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
326 if (!w)
327 return NULL;
328
329
330
331
332
333 if (_widget->sname) {
334 w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
335 if (!w->sname) {
336 kfree(w);
337 return NULL;
338 }
339 }
340 return w;
341}
342
343struct dapm_kcontrol_data {
344 unsigned int value;
345 struct snd_soc_dapm_widget *widget;
346 struct list_head paths;
347 struct snd_soc_dapm_widget_list *wlist;
348};
349
350static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
351 struct snd_kcontrol *kcontrol, const char *ctrl_name)
352{
353 struct dapm_kcontrol_data *data;
354 struct soc_mixer_control *mc;
355 struct soc_enum *e;
356 const char *name;
357 int ret;
358
359 data = kzalloc(sizeof(*data), GFP_KERNEL);
360 if (!data)
361 return -ENOMEM;
362
363 INIT_LIST_HEAD(&data->paths);
364
365 switch (widget->id) {
366 case snd_soc_dapm_switch:
367 case snd_soc_dapm_mixer:
368 case snd_soc_dapm_mixer_named_ctl:
369 mc = (struct soc_mixer_control *)kcontrol->private_value;
370
371 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
372 dev_warn(widget->dapm->dev,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
374 ctrl_name);
375
376 if (mc->autodisable) {
377 struct snd_soc_dapm_widget template;
378
379 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
380 "Autodisable");
381 if (!name) {
382 ret = -ENOMEM;
383 goto err_data;
384 }
385
386 memset(&template, 0, sizeof(template));
387 template.reg = mc->reg;
388 template.mask = (1 << fls(mc->max)) - 1;
389 template.shift = mc->shift;
390 if (mc->invert)
391 template.off_val = mc->max;
392 else
393 template.off_val = 0;
394 template.on_val = template.off_val;
395 template.id = snd_soc_dapm_kcontrol;
396 template.name = name;
397
398 data->value = template.on_val;
399
400 data->widget =
401 snd_soc_dapm_new_control_unlocked(widget->dapm,
402 &template);
403 kfree(name);
404 if (IS_ERR(data->widget)) {
405 ret = PTR_ERR(data->widget);
406 goto err_data;
407 }
408 }
409 break;
410 case snd_soc_dapm_demux:
411 case snd_soc_dapm_mux:
412 e = (struct soc_enum *)kcontrol->private_value;
413
414 if (e->autodisable) {
415 struct snd_soc_dapm_widget template;
416
417 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
418 "Autodisable");
419 if (!name) {
420 ret = -ENOMEM;
421 goto err_data;
422 }
423
424 memset(&template, 0, sizeof(template));
425 template.reg = e->reg;
426 template.mask = e->mask;
427 template.shift = e->shift_l;
428 template.off_val = snd_soc_enum_item_to_val(e, 0);
429 template.on_val = template.off_val;
430 template.id = snd_soc_dapm_kcontrol;
431 template.name = name;
432
433 data->value = template.on_val;
434
435 data->widget = snd_soc_dapm_new_control_unlocked(
436 widget->dapm, &template);
437 kfree(name);
438 if (IS_ERR(data->widget)) {
439 ret = PTR_ERR(data->widget);
440 goto err_data;
441 }
442
443 snd_soc_dapm_add_path(widget->dapm, data->widget,
444 widget, NULL, NULL);
445 }
446 break;
447 default:
448 break;
449 }
450
451 kcontrol->private_data = data;
452
453 return 0;
454
455err_data:
456 kfree(data);
457 return ret;
458}
459
460static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
461{
462 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
463
464 list_del(&data->paths);
465 kfree(data->wlist);
466 kfree(data);
467}
468
469static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol *kcontrol)
471{
472 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
473
474 return data->wlist;
475}
476
477static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
478 struct snd_soc_dapm_widget *widget)
479{
480 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
481 struct snd_soc_dapm_widget_list *new_wlist;
482 unsigned int n;
483
484 if (data->wlist)
485 n = data->wlist->num_widgets + 1;
486 else
487 n = 1;
488
489 new_wlist = krealloc(data->wlist,
490 struct_size(new_wlist, widgets, n),
491 GFP_KERNEL);
492 if (!new_wlist)
493 return -ENOMEM;
494
495 new_wlist->widgets[n - 1] = widget;
496 new_wlist->num_widgets = n;
497
498 data->wlist = new_wlist;
499
500 return 0;
501}
502
503static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
504 struct snd_soc_dapm_path *path)
505{
506 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
507
508 list_add_tail(&path->list_kcontrol, &data->paths);
509}
510
511static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
512{
513 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
514
515 if (!data->widget)
516 return true;
517
518 return data->widget->power;
519}
520
521static struct list_head *dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol *kcontrol)
523{
524 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
525
526 return &data->paths;
527}
528
529#define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
531 list_kcontrol)
532
533unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
534{
535 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
536
537 return data->value;
538}
539EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
540
541static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
542 unsigned int value)
543{
544 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
545
546 if (data->value == value)
547 return false;
548
549 if (data->widget) {
550 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
551 case snd_soc_dapm_switch:
552 case snd_soc_dapm_mixer:
553 case snd_soc_dapm_mixer_named_ctl:
554 data->widget->on_val = value & data->widget->mask;
555 break;
556 case snd_soc_dapm_demux:
557 case snd_soc_dapm_mux:
558 data->widget->on_val = value >> data->widget->shift;
559 break;
560 default:
561 data->widget->on_val = value;
562 break;
563 }
564 }
565
566 data->value = value;
567
568 return true;
569}
570
571
572
573
574
575
576struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol *kcontrol)
578{
579 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
580}
581EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
582
583
584
585
586
587
588
589
590
591struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol *kcontrol)
593{
594 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
595}
596EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
597
598static void dapm_reset(struct snd_soc_card *card)
599{
600 struct snd_soc_dapm_widget *w;
601
602 lockdep_assert_held(&card->dapm_mutex);
603
604 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
605
606 for_each_card_widgets(card, w) {
607 w->new_power = w->power;
608 w->power_checked = false;
609 }
610}
611
612static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
613{
614 if (!dapm->component)
615 return NULL;
616 return dapm->component->name_prefix;
617}
618
619static unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg)
620{
621 if (!dapm->component)
622 return -EIO;
623 return snd_soc_component_read(dapm->component, reg);
624}
625
626static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
627 int reg, unsigned int mask, unsigned int value)
628{
629 if (!dapm->component)
630 return -EIO;
631 return snd_soc_component_update_bits(dapm->component, reg,
632 mask, value);
633}
634
635static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
636 int reg, unsigned int mask, unsigned int value)
637{
638 if (!dapm->component)
639 return -EIO;
640 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
641}
642
643static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
644{
645 if (dapm->component)
646 snd_soc_component_async_complete(dapm->component);
647}
648
649static struct snd_soc_dapm_widget *
650dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
651{
652 struct snd_soc_dapm_widget *w = wcache->widget;
653
654 if (w) {
655 struct list_head *wlist = &w->dapm->card->widgets;
656 const int depth = 2;
657 int i = 0;
658
659 list_for_each_entry_from(w, wlist, list) {
660 if (!strcmp(name, w->name))
661 return w;
662
663 if (++i == depth)
664 break;
665 }
666 }
667
668 return NULL;
669}
670
671static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
672 struct snd_soc_dapm_widget *w)
673{
674 wcache->widget = w;
675}
676
677
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692
693
694int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
695 enum snd_soc_bias_level level)
696{
697 int ret = 0;
698
699 if (dapm->component)
700 ret = snd_soc_component_set_bias_level(dapm->component, level);
701
702 if (ret == 0)
703 dapm->bias_level = level;
704
705 return ret;
706}
707EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
708
709
710
711
712
713
714
715
716
717
718static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
719 enum snd_soc_bias_level level)
720{
721 struct snd_soc_card *card = dapm->card;
722 int ret = 0;
723
724 trace_snd_soc_bias_level_start(card, level);
725
726 ret = snd_soc_card_set_bias_level(card, dapm, level);
727 if (ret != 0)
728 goto out;
729
730 if (!card || dapm != &card->dapm)
731 ret = snd_soc_dapm_force_bias_level(dapm, level);
732
733 if (ret != 0)
734 goto out;
735
736 ret = snd_soc_card_set_bias_level_post(card, dapm, level);
737out:
738 trace_snd_soc_bias_level_done(card, level);
739
740 return ret;
741}
742
743
744static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
745 struct snd_soc_dapm_path *path, const char *control_name,
746 struct snd_soc_dapm_widget *w)
747{
748 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
749 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
750 unsigned int item;
751 int i;
752
753 if (e->reg != SND_SOC_NOPM) {
754 unsigned int val;
755 val = soc_dapm_read(dapm, e->reg);
756 val = (val >> e->shift_l) & e->mask;
757 item = snd_soc_enum_val_to_item(e, val);
758 } else {
759
760
761
762
763
764
765 item = 0;
766 }
767
768 i = match_string(e->texts, e->items, control_name);
769 if (i < 0)
770 return -ENODEV;
771
772 path->name = e->texts[i];
773 path->connect = (i == item);
774 return 0;
775
776}
777
778
779static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
780 int nth_path)
781{
782 struct soc_mixer_control *mc = (struct soc_mixer_control *)
783 p->sink->kcontrol_news[i].private_value;
784 unsigned int reg = mc->reg;
785 unsigned int invert = mc->invert;
786
787 if (reg != SND_SOC_NOPM) {
788 unsigned int shift = mc->shift;
789 unsigned int max = mc->max;
790 unsigned int mask = (1 << fls(max)) - 1;
791 unsigned int val = soc_dapm_read(p->sink->dapm, reg);
792
793
794
795
796
797
798
799
800
801
802
803
804
805 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
806 if (reg != mc->rreg)
807 val = soc_dapm_read(p->sink->dapm, mc->rreg);
808 val = (val >> mc->rshift) & mask;
809 } else {
810 val = (val >> shift) & mask;
811 }
812 if (invert)
813 val = max - val;
814 p->connect = !!val;
815 } else {
816
817
818
819
820
821
822 p->connect = invert;
823 }
824}
825
826
827static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
828 struct snd_soc_dapm_path *path, const char *control_name)
829{
830 int i, nth_path = 0;
831
832
833 for (i = 0; i < path->sink->num_kcontrols; i++) {
834 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
835 path->name = path->sink->kcontrol_news[i].name;
836 dapm_set_mixer_path_status(path, i, nth_path++);
837 return 0;
838 }
839 }
840 return -ENODEV;
841}
842
843static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
844 struct snd_soc_dapm_widget *kcontrolw,
845 const struct snd_kcontrol_new *kcontrol_new,
846 struct snd_kcontrol **kcontrol)
847{
848 struct snd_soc_dapm_widget *w;
849 int i;
850
851 *kcontrol = NULL;
852
853 for_each_card_widgets(dapm->card, w) {
854 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
855 continue;
856 for (i = 0; i < w->num_kcontrols; i++) {
857 if (&w->kcontrol_news[i] == kcontrol_new) {
858 if (w->kcontrols)
859 *kcontrol = w->kcontrols[i];
860 return 1;
861 }
862 }
863 }
864
865 return 0;
866}
867
868
869
870
871
872static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
873 int kci)
874{
875 struct snd_soc_dapm_context *dapm = w->dapm;
876 struct snd_card *card = dapm->card->snd_card;
877 const char *prefix;
878 size_t prefix_len;
879 int shared;
880 struct snd_kcontrol *kcontrol;
881 bool wname_in_long_name, kcname_in_long_name;
882 char *long_name = NULL;
883 const char *name;
884 int ret = 0;
885
886 prefix = soc_dapm_prefix(dapm);
887 if (prefix)
888 prefix_len = strlen(prefix) + 1;
889 else
890 prefix_len = 0;
891
892 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
893 &kcontrol);
894
895 if (!kcontrol) {
896 if (shared) {
897 wname_in_long_name = false;
898 kcname_in_long_name = true;
899 } else {
900 switch (w->id) {
901 case snd_soc_dapm_switch:
902 case snd_soc_dapm_mixer:
903 case snd_soc_dapm_pga:
904 case snd_soc_dapm_effect:
905 case snd_soc_dapm_out_drv:
906 wname_in_long_name = true;
907 kcname_in_long_name = true;
908 break;
909 case snd_soc_dapm_mixer_named_ctl:
910 wname_in_long_name = false;
911 kcname_in_long_name = true;
912 break;
913 case snd_soc_dapm_demux:
914 case snd_soc_dapm_mux:
915 wname_in_long_name = true;
916 kcname_in_long_name = false;
917 break;
918 default:
919 return -EINVAL;
920 }
921 }
922
923 if (wname_in_long_name && kcname_in_long_name) {
924
925
926
927
928
929
930 long_name = kasprintf(GFP_KERNEL, "%s %s",
931 w->name + prefix_len,
932 w->kcontrol_news[kci].name);
933 if (long_name == NULL)
934 return -ENOMEM;
935
936 name = long_name;
937 } else if (wname_in_long_name) {
938 long_name = NULL;
939 name = w->name + prefix_len;
940 } else {
941 long_name = NULL;
942 name = w->kcontrol_news[kci].name;
943 }
944
945 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
946 prefix);
947 if (!kcontrol) {
948 ret = -ENOMEM;
949 goto exit_free;
950 }
951
952 kcontrol->private_free = dapm_kcontrol_free;
953
954 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
955 if (ret) {
956 snd_ctl_free_one(kcontrol);
957 goto exit_free;
958 }
959
960 ret = snd_ctl_add(card, kcontrol);
961 if (ret < 0) {
962 dev_err(dapm->dev,
963 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
964 w->name, name, ret);
965 goto exit_free;
966 }
967 }
968
969 ret = dapm_kcontrol_add_widget(kcontrol, w);
970 if (ret == 0)
971 w->kcontrols[kci] = kcontrol;
972
973exit_free:
974 kfree(long_name);
975
976 return ret;
977}
978
979
980static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
981{
982 int i, ret;
983 struct snd_soc_dapm_path *path;
984 struct dapm_kcontrol_data *data;
985
986
987 for (i = 0; i < w->num_kcontrols; i++) {
988
989 snd_soc_dapm_widget_for_each_source_path(w, path) {
990
991 if (path->name != (char *)w->kcontrol_news[i].name)
992 continue;
993
994 if (!w->kcontrols[i]) {
995 ret = dapm_create_or_share_kcontrol(w, i);
996 if (ret < 0)
997 return ret;
998 }
999
1000 dapm_kcontrol_add_path(w->kcontrols[i], path);
1001
1002 data = snd_kcontrol_chip(w->kcontrols[i]);
1003 if (data->widget)
1004 snd_soc_dapm_add_path(data->widget->dapm,
1005 data->widget,
1006 path->source,
1007 NULL, NULL);
1008 }
1009 }
1010
1011 return 0;
1012}
1013
1014
1015static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1016{
1017 struct snd_soc_dapm_context *dapm = w->dapm;
1018 enum snd_soc_dapm_direction dir;
1019 struct snd_soc_dapm_path *path;
1020 const char *type;
1021 int ret;
1022
1023 switch (w->id) {
1024 case snd_soc_dapm_mux:
1025 dir = SND_SOC_DAPM_DIR_OUT;
1026 type = "mux";
1027 break;
1028 case snd_soc_dapm_demux:
1029 dir = SND_SOC_DAPM_DIR_IN;
1030 type = "demux";
1031 break;
1032 default:
1033 return -EINVAL;
1034 }
1035
1036 if (w->num_kcontrols != 1) {
1037 dev_err(dapm->dev,
1038 "ASoC: %s %s has incorrect number of controls\n", type,
1039 w->name);
1040 return -EINVAL;
1041 }
1042
1043 if (list_empty(&w->edges[dir])) {
1044 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1045 return -EINVAL;
1046 }
1047
1048 ret = dapm_create_or_share_kcontrol(w, 0);
1049 if (ret < 0)
1050 return ret;
1051
1052 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1053 if (path->name)
1054 dapm_kcontrol_add_path(w->kcontrols[0], path);
1055 }
1056
1057 return 0;
1058}
1059
1060
1061static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1062{
1063 int i;
1064
1065 for (i = 0; i < w->num_kcontrols; i++) {
1066 int ret = dapm_create_or_share_kcontrol(w, i);
1067 if (ret < 0)
1068 return ret;
1069 }
1070
1071 return 0;
1072}
1073
1074
1075static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1076{
1077 int i;
1078 struct snd_soc_pcm_runtime *rtd = w->priv;
1079
1080
1081 if (rtd->dai_link->num_params <= 1)
1082 return 0;
1083
1084
1085 for (i = 0; i < w->num_kcontrols; i++) {
1086 struct snd_soc_dapm_context *dapm = w->dapm;
1087 struct snd_card *card = dapm->card->snd_card;
1088 struct snd_kcontrol *kcontrol = snd_soc_cnew(&w->kcontrol_news[i],
1089 w, w->name, NULL);
1090 int ret = snd_ctl_add(card, kcontrol);
1091
1092 if (ret < 0) {
1093 dev_err(dapm->dev,
1094 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1095 w->name, w->kcontrol_news[i].name, ret);
1096 return ret;
1097 }
1098 kcontrol->private_data = w;
1099 w->kcontrols[i] = kcontrol;
1100 }
1101
1102 return 0;
1103}
1104
1105
1106
1107
1108
1109static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1110{
1111 int level = snd_power_get_state(widget->dapm->card->snd_card);
1112
1113 switch (level) {
1114 case SNDRV_CTL_POWER_D3hot:
1115 case SNDRV_CTL_POWER_D3cold:
1116 if (widget->ignore_suspend)
1117 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1118 widget->name);
1119 return widget->ignore_suspend;
1120 default:
1121 return 1;
1122 }
1123}
1124
1125static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list)
1126{
1127 kfree(*list);
1128}
1129
1130static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1131 struct list_head *widgets)
1132{
1133 struct snd_soc_dapm_widget *w;
1134 struct list_head *it;
1135 unsigned int size = 0;
1136 unsigned int i = 0;
1137
1138 list_for_each(it, widgets)
1139 size++;
1140
1141 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1142 if (*list == NULL)
1143 return -ENOMEM;
1144
1145 list_for_each_entry(w, widgets, work_list)
1146 (*list)->widgets[i++] = w;
1147
1148 (*list)->num_widgets = i;
1149
1150 return 0;
1151}
1152
1153
1154
1155
1156
1157
1158static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1159 enum snd_soc_dapm_direction dir)
1160{
1161 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1162 struct snd_soc_dapm_path *path;
1163
1164 widget->endpoints[dir] = -1;
1165
1166 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1167 if (path->weak || path->is_supply)
1168 continue;
1169
1170 if (path->walking)
1171 return;
1172
1173 if (path->connect) {
1174 path->walking = 1;
1175 invalidate_paths_ep(path->node[dir], dir);
1176 path->walking = 0;
1177 }
1178 }
1179}
1180
1181
1182
1183
1184
1185
1186
1187
1188static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1189 struct list_head *list, enum snd_soc_dapm_direction dir,
1190 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1191 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1192 enum snd_soc_dapm_direction)),
1193 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1194 enum snd_soc_dapm_direction))
1195{
1196 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1197 struct snd_soc_dapm_path *path;
1198 int con = 0;
1199
1200 if (widget->endpoints[dir] >= 0)
1201 return widget->endpoints[dir];
1202
1203 DAPM_UPDATE_STAT(widget, path_checks);
1204
1205
1206 if (list)
1207 list_add_tail(&widget->work_list, list);
1208
1209 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1210 list = NULL;
1211 custom_stop_condition = NULL;
1212 }
1213
1214 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1215 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1216 return widget->endpoints[dir];
1217 }
1218
1219 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1220 DAPM_UPDATE_STAT(widget, neighbour_checks);
1221
1222 if (path->weak || path->is_supply)
1223 continue;
1224
1225 if (path->walking)
1226 return 1;
1227
1228 trace_snd_soc_dapm_path(widget, dir, path);
1229
1230 if (path->connect) {
1231 path->walking = 1;
1232 con += fn(path->node[dir], list, custom_stop_condition);
1233 path->walking = 0;
1234 }
1235 }
1236
1237 widget->endpoints[dir] = con;
1238
1239 return con;
1240}
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1252 struct list_head *list,
1253 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1254 enum snd_soc_dapm_direction))
1255{
1256 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1257 is_connected_output_ep, custom_stop_condition);
1258}
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1270 struct list_head *list,
1271 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1272 enum snd_soc_dapm_direction))
1273{
1274 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1275 is_connected_input_ep, custom_stop_condition);
1276}
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1298 struct snd_soc_dapm_widget_list **list,
1299 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1300 enum snd_soc_dapm_direction))
1301{
1302 struct snd_soc_card *card = dai->component->card;
1303 struct snd_soc_dapm_widget *w;
1304 LIST_HEAD(widgets);
1305 int paths;
1306 int ret;
1307
1308 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1309
1310 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1311 w = dai->playback_widget;
1312 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1313 paths = is_connected_output_ep(w, &widgets,
1314 custom_stop_condition);
1315 } else {
1316 w = dai->capture_widget;
1317 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1318 paths = is_connected_input_ep(w, &widgets,
1319 custom_stop_condition);
1320 }
1321
1322
1323 list_del(widgets.next);
1324
1325 ret = dapm_widget_list_create(list, &widgets);
1326 if (ret)
1327 paths = ret;
1328
1329 trace_snd_soc_dapm_connected(paths, stream);
1330 mutex_unlock(&card->dapm_mutex);
1331
1332 return paths;
1333}
1334
1335void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
1336{
1337 dapm_widget_list_free(list);
1338}
1339
1340
1341
1342
1343int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1344 struct snd_kcontrol *kcontrol, int event)
1345{
1346 int ret;
1347
1348 soc_dapm_async_complete(w->dapm);
1349
1350 if (SND_SOC_DAPM_EVENT_ON(event)) {
1351 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1352 ret = regulator_allow_bypass(w->regulator, false);
1353 if (ret != 0)
1354 dev_warn(w->dapm->dev,
1355 "ASoC: Failed to unbypass %s: %d\n",
1356 w->name, ret);
1357 }
1358
1359 return regulator_enable(w->regulator);
1360 } else {
1361 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1362 ret = regulator_allow_bypass(w->regulator, true);
1363 if (ret != 0)
1364 dev_warn(w->dapm->dev,
1365 "ASoC: Failed to bypass %s: %d\n",
1366 w->name, ret);
1367 }
1368
1369 return regulator_disable_deferred(w->regulator, w->shift);
1370 }
1371}
1372EXPORT_SYMBOL_GPL(dapm_regulator_event);
1373
1374
1375
1376
1377int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1378 struct snd_kcontrol *kcontrol, int event)
1379{
1380 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1381 struct pinctrl *p = w->pinctrl;
1382 struct pinctrl_state *s;
1383
1384 if (!p || !priv)
1385 return -EIO;
1386
1387 if (SND_SOC_DAPM_EVENT_ON(event))
1388 s = pinctrl_lookup_state(p, priv->active_state);
1389 else
1390 s = pinctrl_lookup_state(p, priv->sleep_state);
1391
1392 if (IS_ERR(s))
1393 return PTR_ERR(s);
1394
1395 return pinctrl_select_state(p, s);
1396}
1397EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1398
1399
1400
1401
1402int dapm_clock_event(struct snd_soc_dapm_widget *w,
1403 struct snd_kcontrol *kcontrol, int event)
1404{
1405 if (!w->clk)
1406 return -EIO;
1407
1408 soc_dapm_async_complete(w->dapm);
1409
1410 if (SND_SOC_DAPM_EVENT_ON(event)) {
1411 return clk_prepare_enable(w->clk);
1412 } else {
1413 clk_disable_unprepare(w->clk);
1414 return 0;
1415 }
1416
1417 return 0;
1418}
1419EXPORT_SYMBOL_GPL(dapm_clock_event);
1420
1421static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1422{
1423 if (w->power_checked)
1424 return w->new_power;
1425
1426 if (w->force)
1427 w->new_power = 1;
1428 else
1429 w->new_power = w->power_check(w);
1430
1431 w->power_checked = true;
1432
1433 return w->new_power;
1434}
1435
1436
1437static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1438{
1439 int in, out;
1440
1441 DAPM_UPDATE_STAT(w, power_checks);
1442
1443 in = is_connected_input_ep(w, NULL, NULL);
1444 out = is_connected_output_ep(w, NULL, NULL);
1445 return out != 0 && in != 0;
1446}
1447
1448
1449static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1450{
1451 struct snd_soc_dapm_path *path;
1452
1453 DAPM_UPDATE_STAT(w, power_checks);
1454
1455
1456 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1457 DAPM_UPDATE_STAT(w, neighbour_checks);
1458
1459 if (path->weak)
1460 continue;
1461
1462 if (path->connected &&
1463 !path->connected(path->source, path->sink))
1464 continue;
1465
1466 if (dapm_widget_power_check(path->sink))
1467 return 1;
1468 }
1469
1470 return 0;
1471}
1472
1473static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1474{
1475 return w->connected;
1476}
1477
1478static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1479 struct snd_soc_dapm_widget *b,
1480 bool power_up)
1481{
1482 int *sort;
1483
1484 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1485 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1486
1487 if (power_up)
1488 sort = dapm_up_seq;
1489 else
1490 sort = dapm_down_seq;
1491
1492 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1493 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1494
1495 if (sort[a->id] != sort[b->id])
1496 return sort[a->id] - sort[b->id];
1497 if (a->subseq != b->subseq) {
1498 if (power_up)
1499 return a->subseq - b->subseq;
1500 else
1501 return b->subseq - a->subseq;
1502 }
1503 if (a->reg != b->reg)
1504 return a->reg - b->reg;
1505 if (a->dapm != b->dapm)
1506 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1507
1508 return 0;
1509}
1510
1511
1512static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1513 struct list_head *list,
1514 bool power_up)
1515{
1516 struct snd_soc_dapm_widget *w;
1517
1518 list_for_each_entry(w, list, power_list)
1519 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1520 list_add_tail(&new_widget->power_list, &w->power_list);
1521 return;
1522 }
1523
1524 list_add_tail(&new_widget->power_list, list);
1525}
1526
1527static void dapm_seq_check_event(struct snd_soc_card *card,
1528 struct snd_soc_dapm_widget *w, int event)
1529{
1530 const char *ev_name;
1531 int power;
1532
1533 switch (event) {
1534 case SND_SOC_DAPM_PRE_PMU:
1535 ev_name = "PRE_PMU";
1536 power = 1;
1537 break;
1538 case SND_SOC_DAPM_POST_PMU:
1539 ev_name = "POST_PMU";
1540 power = 1;
1541 break;
1542 case SND_SOC_DAPM_PRE_PMD:
1543 ev_name = "PRE_PMD";
1544 power = 0;
1545 break;
1546 case SND_SOC_DAPM_POST_PMD:
1547 ev_name = "POST_PMD";
1548 power = 0;
1549 break;
1550 case SND_SOC_DAPM_WILL_PMU:
1551 ev_name = "WILL_PMU";
1552 power = 1;
1553 break;
1554 case SND_SOC_DAPM_WILL_PMD:
1555 ev_name = "WILL_PMD";
1556 power = 0;
1557 break;
1558 default:
1559 WARN(1, "Unknown event %d\n", event);
1560 return;
1561 }
1562
1563 if (w->new_power != power)
1564 return;
1565
1566 if (w->event && (w->event_flags & event)) {
1567 int ret;
1568
1569 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1570 w->name, ev_name);
1571 soc_dapm_async_complete(w->dapm);
1572 trace_snd_soc_dapm_widget_event_start(w, event);
1573 ret = w->event(w, NULL, event);
1574 trace_snd_soc_dapm_widget_event_done(w, event);
1575 if (ret < 0)
1576 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1577 ev_name, w->name, ret);
1578 }
1579}
1580
1581
1582static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1583 struct list_head *pending)
1584{
1585 struct snd_soc_dapm_context *dapm;
1586 struct snd_soc_dapm_widget *w;
1587 int reg;
1588 unsigned int value = 0;
1589 unsigned int mask = 0;
1590
1591 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1592 reg = w->reg;
1593 dapm = w->dapm;
1594
1595 list_for_each_entry(w, pending, power_list) {
1596 WARN_ON(reg != w->reg || dapm != w->dapm);
1597 w->power = w->new_power;
1598
1599 mask |= w->mask << w->shift;
1600 if (w->power)
1601 value |= w->on_val << w->shift;
1602 else
1603 value |= w->off_val << w->shift;
1604
1605 pop_dbg(dapm->dev, card->pop_time,
1606 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1607 w->name, reg, value, mask);
1608
1609
1610 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1611 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1612 }
1613
1614 if (reg >= 0) {
1615
1616
1617
1618
1619 pop_dbg(dapm->dev, card->pop_time,
1620 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1621 value, mask, reg, card->pop_time);
1622 pop_wait(card->pop_time);
1623 soc_dapm_update_bits(dapm, reg, mask, value);
1624 }
1625
1626 list_for_each_entry(w, pending, power_list) {
1627 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1628 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1629 }
1630}
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640static void dapm_seq_run(struct snd_soc_card *card,
1641 struct list_head *list, int event, bool power_up)
1642{
1643 struct snd_soc_dapm_widget *w, *n;
1644 struct snd_soc_dapm_context *d;
1645 LIST_HEAD(pending);
1646 int cur_sort = -1;
1647 int cur_subseq = -1;
1648 int cur_reg = SND_SOC_NOPM;
1649 struct snd_soc_dapm_context *cur_dapm = NULL;
1650 int i;
1651 int *sort;
1652
1653 if (power_up)
1654 sort = dapm_up_seq;
1655 else
1656 sort = dapm_down_seq;
1657
1658 list_for_each_entry_safe(w, n, list, power_list) {
1659 int ret = 0;
1660
1661
1662 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1663 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1664 if (!list_empty(&pending))
1665 dapm_seq_run_coalesced(card, &pending);
1666
1667 if (cur_dapm && cur_dapm->component) {
1668 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1669 if (sort[i] == cur_sort)
1670 snd_soc_component_seq_notifier(
1671 cur_dapm->component,
1672 i, cur_subseq);
1673 }
1674
1675 if (cur_dapm && w->dapm != cur_dapm)
1676 soc_dapm_async_complete(cur_dapm);
1677
1678 INIT_LIST_HEAD(&pending);
1679 cur_sort = -1;
1680 cur_subseq = INT_MIN;
1681 cur_reg = SND_SOC_NOPM;
1682 cur_dapm = NULL;
1683 }
1684
1685 switch (w->id) {
1686 case snd_soc_dapm_pre:
1687 if (!w->event)
1688 list_for_each_entry_safe_continue(w, n, list,
1689 power_list);
1690
1691 if (event == SND_SOC_DAPM_STREAM_START)
1692 ret = w->event(w,
1693 NULL, SND_SOC_DAPM_PRE_PMU);
1694 else if (event == SND_SOC_DAPM_STREAM_STOP)
1695 ret = w->event(w,
1696 NULL, SND_SOC_DAPM_PRE_PMD);
1697 break;
1698
1699 case snd_soc_dapm_post:
1700 if (!w->event)
1701 list_for_each_entry_safe_continue(w, n, list,
1702 power_list);
1703
1704 if (event == SND_SOC_DAPM_STREAM_START)
1705 ret = w->event(w,
1706 NULL, SND_SOC_DAPM_POST_PMU);
1707 else if (event == SND_SOC_DAPM_STREAM_STOP)
1708 ret = w->event(w,
1709 NULL, SND_SOC_DAPM_POST_PMD);
1710 break;
1711
1712 default:
1713
1714 cur_sort = sort[w->id];
1715 cur_subseq = w->subseq;
1716 cur_reg = w->reg;
1717 cur_dapm = w->dapm;
1718 list_move(&w->power_list, &pending);
1719 break;
1720 }
1721
1722 if (ret < 0)
1723 dev_err(w->dapm->dev,
1724 "ASoC: Failed to apply widget power: %d\n", ret);
1725 }
1726
1727 if (!list_empty(&pending))
1728 dapm_seq_run_coalesced(card, &pending);
1729
1730 if (cur_dapm && cur_dapm->component) {
1731 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1732 if (sort[i] == cur_sort)
1733 snd_soc_component_seq_notifier(
1734 cur_dapm->component,
1735 i, cur_subseq);
1736 }
1737
1738 for_each_card_dapms(card, d)
1739 soc_dapm_async_complete(d);
1740}
1741
1742static void dapm_widget_update(struct snd_soc_card *card)
1743{
1744 struct snd_soc_dapm_update *update = card->update;
1745 struct snd_soc_dapm_widget_list *wlist;
1746 struct snd_soc_dapm_widget *w = NULL;
1747 unsigned int wi;
1748 int ret;
1749
1750 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1751 return;
1752
1753 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1754
1755 for_each_dapm_widgets(wlist, wi, w) {
1756 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1757 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1758 if (ret != 0)
1759 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1760 w->name, ret);
1761 }
1762 }
1763
1764 if (!w)
1765 return;
1766
1767 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1768 update->val);
1769 if (ret < 0)
1770 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1771 w->name, ret);
1772
1773 if (update->has_second_set) {
1774 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1775 update->mask2, update->val2);
1776 if (ret < 0)
1777 dev_err(w->dapm->dev,
1778 "ASoC: %s DAPM update failed: %d\n",
1779 w->name, ret);
1780 }
1781
1782 for_each_dapm_widgets(wlist, wi, w) {
1783 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1784 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1785 if (ret != 0)
1786 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1787 w->name, ret);
1788 }
1789 }
1790}
1791
1792
1793
1794
1795static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1796{
1797 struct snd_soc_dapm_context *d = data;
1798 int ret;
1799
1800
1801 if (d->bias_level == SND_SOC_BIAS_OFF &&
1802 d->target_bias_level != SND_SOC_BIAS_OFF) {
1803 if (d->dev && cookie)
1804 pm_runtime_get_sync(d->dev);
1805
1806 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1807 if (ret != 0)
1808 dev_err(d->dev,
1809 "ASoC: Failed to turn on bias: %d\n", ret);
1810 }
1811
1812
1813 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1814 d->bias_level != SND_SOC_BIAS_ON) ||
1815 (d->target_bias_level != SND_SOC_BIAS_ON &&
1816 d->bias_level == SND_SOC_BIAS_ON)) {
1817 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1818 if (ret != 0)
1819 dev_err(d->dev,
1820 "ASoC: Failed to prepare bias: %d\n", ret);
1821 }
1822}
1823
1824
1825
1826
1827static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1828{
1829 struct snd_soc_dapm_context *d = data;
1830 int ret;
1831
1832
1833 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1834 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1835 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1836 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1837 if (ret != 0)
1838 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1839 ret);
1840 }
1841
1842
1843 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1844 d->target_bias_level == SND_SOC_BIAS_OFF) {
1845 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1846 if (ret != 0)
1847 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1848 ret);
1849
1850 if (d->dev && cookie)
1851 pm_runtime_put(d->dev);
1852 }
1853
1854
1855 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1856 d->target_bias_level == SND_SOC_BIAS_ON) {
1857 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1858 if (ret != 0)
1859 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1860 ret);
1861 }
1862}
1863
1864static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1865 bool power, bool connect)
1866{
1867
1868
1869
1870 if (!connect)
1871 return;
1872
1873
1874
1875 if (power != peer->power)
1876 dapm_mark_dirty(peer, "peer state change");
1877}
1878
1879static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1880 struct list_head *up_list,
1881 struct list_head *down_list)
1882{
1883 struct snd_soc_dapm_path *path;
1884
1885 if (w->power == power)
1886 return;
1887
1888 trace_snd_soc_dapm_widget_power(w, power);
1889
1890
1891
1892
1893 snd_soc_dapm_widget_for_each_source_path(w, path)
1894 dapm_widget_set_peer_power(path->source, power, path->connect);
1895
1896
1897 if (!w->is_supply) {
1898 snd_soc_dapm_widget_for_each_sink_path(w, path)
1899 dapm_widget_set_peer_power(path->sink, power,
1900 path->connect);
1901 }
1902
1903 if (power)
1904 dapm_seq_insert(w, up_list, true);
1905 else
1906 dapm_seq_insert(w, down_list, false);
1907}
1908
1909static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1910 struct list_head *up_list,
1911 struct list_head *down_list)
1912{
1913 int power;
1914
1915 switch (w->id) {
1916 case snd_soc_dapm_pre:
1917 dapm_seq_insert(w, down_list, false);
1918 break;
1919 case snd_soc_dapm_post:
1920 dapm_seq_insert(w, up_list, true);
1921 break;
1922
1923 default:
1924 power = dapm_widget_power_check(w);
1925
1926 dapm_widget_set_power(w, power, up_list, down_list);
1927 break;
1928 }
1929}
1930
1931static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1932{
1933 if (dapm->idle_bias_off)
1934 return true;
1935
1936 switch (snd_power_get_state(dapm->card->snd_card)) {
1937 case SNDRV_CTL_POWER_D3hot:
1938 case SNDRV_CTL_POWER_D3cold:
1939 return dapm->suspend_bias_off;
1940 default:
1941 break;
1942 }
1943
1944 return false;
1945}
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956static int dapm_power_widgets(struct snd_soc_card *card, int event)
1957{
1958 struct snd_soc_dapm_widget *w;
1959 struct snd_soc_dapm_context *d;
1960 LIST_HEAD(up_list);
1961 LIST_HEAD(down_list);
1962 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1963 enum snd_soc_bias_level bias;
1964 int ret;
1965
1966 lockdep_assert_held(&card->dapm_mutex);
1967
1968 trace_snd_soc_dapm_start(card);
1969
1970 for_each_card_dapms(card, d) {
1971 if (dapm_idle_bias_off(d))
1972 d->target_bias_level = SND_SOC_BIAS_OFF;
1973 else
1974 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1975 }
1976
1977 dapm_reset(card);
1978
1979
1980
1981
1982
1983
1984
1985 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1986 dapm_power_one_widget(w, &up_list, &down_list);
1987 }
1988
1989 for_each_card_widgets(card, w) {
1990 switch (w->id) {
1991 case snd_soc_dapm_pre:
1992 case snd_soc_dapm_post:
1993
1994 break;
1995 default:
1996 list_del_init(&w->dirty);
1997 break;
1998 }
1999
2000 if (w->new_power) {
2001 d = w->dapm;
2002
2003
2004
2005
2006
2007
2008
2009
2010 switch (w->id) {
2011 case snd_soc_dapm_siggen:
2012 case snd_soc_dapm_vmid:
2013 break;
2014 case snd_soc_dapm_supply:
2015 case snd_soc_dapm_regulator_supply:
2016 case snd_soc_dapm_pinctrl:
2017 case snd_soc_dapm_clock_supply:
2018 case snd_soc_dapm_micbias:
2019 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2020 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2021 break;
2022 default:
2023 d->target_bias_level = SND_SOC_BIAS_ON;
2024 break;
2025 }
2026 }
2027
2028 }
2029
2030
2031
2032
2033 bias = SND_SOC_BIAS_OFF;
2034 for_each_card_dapms(card, d)
2035 if (d->target_bias_level > bias)
2036 bias = d->target_bias_level;
2037 for_each_card_dapms(card, d)
2038 if (!dapm_idle_bias_off(d))
2039 d->target_bias_level = bias;
2040
2041 trace_snd_soc_dapm_walk_done(card);
2042
2043
2044 dapm_pre_sequence_async(&card->dapm, 0);
2045
2046 for_each_card_dapms(card, d) {
2047 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2048 async_schedule_domain(dapm_pre_sequence_async, d,
2049 &async_domain);
2050 }
2051 async_synchronize_full_domain(&async_domain);
2052
2053 list_for_each_entry(w, &down_list, power_list) {
2054 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2055 }
2056
2057 list_for_each_entry(w, &up_list, power_list) {
2058 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2059 }
2060
2061
2062 dapm_seq_run(card, &down_list, event, false);
2063
2064 dapm_widget_update(card);
2065
2066
2067 dapm_seq_run(card, &up_list, event, true);
2068
2069
2070 for_each_card_dapms(card, d) {
2071 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2072 async_schedule_domain(dapm_post_sequence_async, d,
2073 &async_domain);
2074 }
2075 async_synchronize_full_domain(&async_domain);
2076
2077 dapm_post_sequence_async(&card->dapm, 0);
2078
2079
2080 for_each_card_dapms(card, d) {
2081 if (!d->component)
2082 continue;
2083
2084 ret = snd_soc_component_stream_event(d->component, event);
2085 if (ret < 0)
2086 return ret;
2087 }
2088
2089 pop_dbg(card->dev, card->pop_time,
2090 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2091 pop_wait(card->pop_time);
2092
2093 trace_snd_soc_dapm_done(card);
2094
2095 return 0;
2096}
2097
2098#ifdef CONFIG_DEBUG_FS
2099static ssize_t dapm_widget_power_read_file(struct file *file,
2100 char __user *user_buf,
2101 size_t count, loff_t *ppos)
2102{
2103 struct snd_soc_dapm_widget *w = file->private_data;
2104 struct snd_soc_card *card = w->dapm->card;
2105 enum snd_soc_dapm_direction dir, rdir;
2106 char *buf;
2107 int in, out;
2108 ssize_t ret;
2109 struct snd_soc_dapm_path *p = NULL;
2110
2111 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2112 if (!buf)
2113 return -ENOMEM;
2114
2115 mutex_lock(&card->dapm_mutex);
2116
2117
2118 if (w->is_supply) {
2119 in = 0;
2120 out = 0;
2121 } else {
2122 in = is_connected_input_ep(w, NULL, NULL);
2123 out = is_connected_output_ep(w, NULL, NULL);
2124 }
2125
2126 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2127 w->name, w->power ? "On" : "Off",
2128 w->force ? " (forced)" : "", in, out);
2129
2130 if (w->reg >= 0)
2131 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2132 " - R%d(0x%x) mask 0x%x",
2133 w->reg, w->reg, w->mask << w->shift);
2134
2135 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2136
2137 if (w->sname)
2138 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2139 w->sname,
2140 w->active ? "active" : "inactive");
2141
2142 snd_soc_dapm_for_each_direction(dir) {
2143 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2144 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2145 if (p->connected && !p->connected(p->source, p->sink))
2146 continue;
2147
2148 if (!p->connect)
2149 continue;
2150
2151 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2152 " %s \"%s\" \"%s\"\n",
2153 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2154 p->name ? p->name : "static",
2155 p->node[rdir]->name);
2156 }
2157 }
2158
2159 mutex_unlock(&card->dapm_mutex);
2160
2161 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2162
2163 kfree(buf);
2164 return ret;
2165}
2166
2167static const struct file_operations dapm_widget_power_fops = {
2168 .open = simple_open,
2169 .read = dapm_widget_power_read_file,
2170 .llseek = default_llseek,
2171};
2172
2173static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2174 size_t count, loff_t *ppos)
2175{
2176 struct snd_soc_dapm_context *dapm = file->private_data;
2177 char *level;
2178
2179 switch (dapm->bias_level) {
2180 case SND_SOC_BIAS_ON:
2181 level = "On\n";
2182 break;
2183 case SND_SOC_BIAS_PREPARE:
2184 level = "Prepare\n";
2185 break;
2186 case SND_SOC_BIAS_STANDBY:
2187 level = "Standby\n";
2188 break;
2189 case SND_SOC_BIAS_OFF:
2190 level = "Off\n";
2191 break;
2192 default:
2193 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2194 level = "Unknown\n";
2195 break;
2196 }
2197
2198 return simple_read_from_buffer(user_buf, count, ppos, level,
2199 strlen(level));
2200}
2201
2202static const struct file_operations dapm_bias_fops = {
2203 .open = simple_open,
2204 .read = dapm_bias_read_file,
2205 .llseek = default_llseek,
2206};
2207
2208void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2209 struct dentry *parent)
2210{
2211 if (!parent || IS_ERR(parent))
2212 return;
2213
2214 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2215
2216 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2217 &dapm_bias_fops);
2218}
2219
2220static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2221{
2222 struct snd_soc_dapm_context *dapm = w->dapm;
2223
2224 if (!dapm->debugfs_dapm || !w->name)
2225 return;
2226
2227 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2228 &dapm_widget_power_fops);
2229}
2230
2231static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2232{
2233 debugfs_remove_recursive(dapm->debugfs_dapm);
2234 dapm->debugfs_dapm = NULL;
2235}
2236
2237#else
2238void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2239 struct dentry *parent)
2240{
2241}
2242
2243static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2244{
2245}
2246
2247static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2248{
2249}
2250
2251#endif
2252
2253
2254
2255
2256
2257
2258
2259
2260static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2261 bool connect, const char *reason)
2262{
2263 if (path->connect == connect)
2264 return;
2265
2266 path->connect = connect;
2267 dapm_mark_dirty(path->source, reason);
2268 dapm_mark_dirty(path->sink, reason);
2269 dapm_path_invalidate(path);
2270}
2271
2272
2273static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2274 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2275{
2276 struct snd_soc_dapm_path *path;
2277 int found = 0;
2278 bool connect;
2279
2280 lockdep_assert_held(&card->dapm_mutex);
2281
2282
2283 dapm_kcontrol_for_each_path(path, kcontrol) {
2284 found = 1;
2285
2286 if (e && !(strcmp(path->name, e->texts[mux])))
2287 connect = true;
2288 else
2289 connect = false;
2290
2291 soc_dapm_connect_path(path, connect, "mux update");
2292 }
2293
2294 if (found)
2295 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2296
2297 return found;
2298}
2299
2300int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2301 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2302 struct snd_soc_dapm_update *update)
2303{
2304 struct snd_soc_card *card = dapm->card;
2305 int ret;
2306
2307 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2308 card->update = update;
2309 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2310 card->update = NULL;
2311 mutex_unlock(&card->dapm_mutex);
2312 if (ret > 0)
2313 snd_soc_dpcm_runtime_update(card);
2314 return ret;
2315}
2316EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2317
2318
2319static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2320 struct snd_kcontrol *kcontrol,
2321 int connect, int rconnect)
2322{
2323 struct snd_soc_dapm_path *path;
2324 int found = 0;
2325
2326 lockdep_assert_held(&card->dapm_mutex);
2327
2328
2329 dapm_kcontrol_for_each_path(path, kcontrol) {
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352 if (found && rconnect >= 0)
2353 soc_dapm_connect_path(path, rconnect, "mixer update");
2354 else
2355 soc_dapm_connect_path(path, connect, "mixer update");
2356 found = 1;
2357 }
2358
2359 if (found)
2360 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2361
2362 return found;
2363}
2364
2365int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2366 struct snd_kcontrol *kcontrol, int connect,
2367 struct snd_soc_dapm_update *update)
2368{
2369 struct snd_soc_card *card = dapm->card;
2370 int ret;
2371
2372 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2373 card->update = update;
2374 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2375 card->update = NULL;
2376 mutex_unlock(&card->dapm_mutex);
2377 if (ret > 0)
2378 snd_soc_dpcm_runtime_update(card);
2379 return ret;
2380}
2381EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2382
2383static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2384 char *buf)
2385{
2386 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2387 struct snd_soc_dapm_widget *w;
2388 int count = 0;
2389 char *state = "not set";
2390
2391
2392
2393
2394
2395 if (!cmpnt->card)
2396 return 0;
2397
2398 for_each_card_widgets(cmpnt->card, w) {
2399 if (w->dapm != dapm)
2400 continue;
2401
2402
2403 switch (w->id) {
2404 case snd_soc_dapm_hp:
2405 case snd_soc_dapm_mic:
2406 case snd_soc_dapm_spk:
2407 case snd_soc_dapm_line:
2408 case snd_soc_dapm_micbias:
2409 case snd_soc_dapm_dac:
2410 case snd_soc_dapm_adc:
2411 case snd_soc_dapm_pga:
2412 case snd_soc_dapm_effect:
2413 case snd_soc_dapm_out_drv:
2414 case snd_soc_dapm_mixer:
2415 case snd_soc_dapm_mixer_named_ctl:
2416 case snd_soc_dapm_supply:
2417 case snd_soc_dapm_regulator_supply:
2418 case snd_soc_dapm_pinctrl:
2419 case snd_soc_dapm_clock_supply:
2420 if (w->name)
2421 count += sprintf(buf + count, "%s: %s\n",
2422 w->name, w->power ? "On":"Off");
2423 break;
2424 default:
2425 break;
2426 }
2427 }
2428
2429 switch (snd_soc_dapm_get_bias_level(dapm)) {
2430 case SND_SOC_BIAS_ON:
2431 state = "On";
2432 break;
2433 case SND_SOC_BIAS_PREPARE:
2434 state = "Prepare";
2435 break;
2436 case SND_SOC_BIAS_STANDBY:
2437 state = "Standby";
2438 break;
2439 case SND_SOC_BIAS_OFF:
2440 state = "Off";
2441 break;
2442 }
2443 count += sprintf(buf + count, "PM State: %s\n", state);
2444
2445 return count;
2446}
2447
2448
2449static ssize_t dapm_widget_show(struct device *dev,
2450 struct device_attribute *attr, char *buf)
2451{
2452 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2453 struct snd_soc_dai *codec_dai;
2454 int i, count = 0;
2455
2456 mutex_lock(&rtd->card->dapm_mutex);
2457
2458 for_each_rtd_codec_dais(rtd, i, codec_dai) {
2459 struct snd_soc_component *cmpnt = codec_dai->component;
2460
2461 count += dapm_widget_show_component(cmpnt, buf + count);
2462 }
2463
2464 mutex_unlock(&rtd->card->dapm_mutex);
2465
2466 return count;
2467}
2468
2469static DEVICE_ATTR_RO(dapm_widget);
2470
2471struct attribute *soc_dapm_dev_attrs[] = {
2472 &dev_attr_dapm_widget.attr,
2473 NULL
2474};
2475
2476static void dapm_free_path(struct snd_soc_dapm_path *path)
2477{
2478 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2479 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2480 list_del(&path->list_kcontrol);
2481 list_del(&path->list);
2482 kfree(path);
2483}
2484
2485void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2486{
2487 struct snd_soc_dapm_path *p, *next_p;
2488 enum snd_soc_dapm_direction dir;
2489
2490 list_del(&w->list);
2491 list_del(&w->dirty);
2492
2493
2494
2495
2496
2497 snd_soc_dapm_for_each_direction(dir) {
2498 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2499 dapm_free_path(p);
2500 }
2501
2502 kfree(w->kcontrols);
2503 kfree_const(w->name);
2504 kfree_const(w->sname);
2505 kfree(w);
2506}
2507
2508void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2509{
2510 dapm->path_sink_cache.widget = NULL;
2511 dapm->path_source_cache.widget = NULL;
2512}
2513
2514
2515static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2516{
2517 struct snd_soc_dapm_widget *w, *next_w;
2518
2519 for_each_card_widgets_safe(dapm->card, w, next_w) {
2520 if (w->dapm != dapm)
2521 continue;
2522 snd_soc_dapm_free_widget(w);
2523 }
2524 snd_soc_dapm_reset_cache(dapm);
2525}
2526
2527static struct snd_soc_dapm_widget *dapm_find_widget(
2528 struct snd_soc_dapm_context *dapm, const char *pin,
2529 bool search_other_contexts)
2530{
2531 struct snd_soc_dapm_widget *w;
2532 struct snd_soc_dapm_widget *fallback = NULL;
2533 char prefixed_pin[80];
2534 const char *pin_name;
2535 const char *prefix = soc_dapm_prefix(dapm);
2536
2537 if (prefix) {
2538 snprintf(prefixed_pin, sizeof(prefixed_pin), "%s %s",
2539 prefix, pin);
2540 pin_name = prefixed_pin;
2541 } else {
2542 pin_name = pin;
2543 }
2544
2545 for_each_card_widgets(dapm->card, w) {
2546 if (!strcmp(w->name, pin_name)) {
2547 if (w->dapm == dapm)
2548 return w;
2549 else
2550 fallback = w;
2551 }
2552 }
2553
2554 if (search_other_contexts)
2555 return fallback;
2556
2557 return NULL;
2558}
2559
2560static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2561 const char *pin, int status)
2562{
2563 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2564 int ret = 0;
2565
2566 dapm_assert_locked(dapm);
2567
2568 if (!w) {
2569 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2570 return -EINVAL;
2571 }
2572
2573 if (w->connected != status) {
2574 dapm_mark_dirty(w, "pin configuration");
2575 dapm_widget_invalidate_input_paths(w);
2576 dapm_widget_invalidate_output_paths(w);
2577 ret = 1;
2578 }
2579
2580 w->connected = status;
2581 if (status == 0)
2582 w->force = 0;
2583
2584 return ret;
2585}
2586
2587
2588
2589
2590
2591
2592
2593
2594
2595
2596
2597
2598int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2599{
2600
2601
2602
2603
2604 if (!dapm->card || !dapm->card->instantiated)
2605 return 0;
2606
2607 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2608}
2609EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2610
2611
2612
2613
2614
2615
2616
2617
2618
2619
2620int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2621{
2622 int ret;
2623
2624 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2625 ret = snd_soc_dapm_sync_unlocked(dapm);
2626 mutex_unlock(&dapm->card->dapm_mutex);
2627 return ret;
2628}
2629EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2630
2631static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2632 struct snd_soc_dapm_widget *w,
2633 int channels)
2634{
2635 switch (w->id) {
2636 case snd_soc_dapm_aif_out:
2637 case snd_soc_dapm_aif_in:
2638 break;
2639 default:
2640 return 0;
2641 }
2642
2643 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2644 w->channel < channels ? "Connecting" : "Disconnecting",
2645 p->source->name, p->sink->name);
2646
2647 if (w->channel < channels)
2648 soc_dapm_connect_path(p, true, "dai update");
2649 else
2650 soc_dapm_connect_path(p, false, "dai update");
2651
2652 return 0;
2653}
2654
2655static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2656 struct snd_pcm_hw_params *params,
2657 struct snd_soc_dai *dai)
2658{
2659 int dir = substream->stream;
2660 int channels = params_channels(params);
2661 struct snd_soc_dapm_path *p;
2662 struct snd_soc_dapm_widget *w;
2663 int ret;
2664
2665 w = snd_soc_dai_get_widget(dai, dir);
2666
2667 if (!w)
2668 return 0;
2669
2670 dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
2671 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
2672
2673 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2674 ret = dapm_update_dai_chan(p, p->sink, channels);
2675 if (ret < 0)
2676 return ret;
2677 }
2678
2679 snd_soc_dapm_widget_for_each_source_path(w, p) {
2680 ret = dapm_update_dai_chan(p, p->source, channels);
2681 if (ret < 0)
2682 return ret;
2683 }
2684
2685 return 0;
2686}
2687
2688int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
2689 struct snd_pcm_hw_params *params,
2690 struct snd_soc_dai *dai)
2691{
2692 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
2693 int ret;
2694
2695 mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2696 ret = dapm_update_dai_unlocked(substream, params, dai);
2697 mutex_unlock(&rtd->card->dapm_mutex);
2698
2699 return ret;
2700}
2701EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
2702
2703
2704
2705
2706
2707
2708
2709
2710
2711
2712static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2713{
2714 enum snd_soc_dapm_direction dir;
2715 struct snd_soc_dapm_path *p;
2716 unsigned int ep;
2717
2718 switch (w->id) {
2719 case snd_soc_dapm_input:
2720
2721 if (w->dapm->card->fully_routed)
2722 return;
2723 ep = SND_SOC_DAPM_EP_SOURCE;
2724 snd_soc_dapm_widget_for_each_source_path(w, p) {
2725 if (p->source->id == snd_soc_dapm_micbias ||
2726 p->source->id == snd_soc_dapm_mic ||
2727 p->source->id == snd_soc_dapm_line ||
2728 p->source->id == snd_soc_dapm_output) {
2729 ep = 0;
2730 break;
2731 }
2732 }
2733 break;
2734 case snd_soc_dapm_output:
2735
2736 if (w->dapm->card->fully_routed)
2737 return;
2738 ep = SND_SOC_DAPM_EP_SINK;
2739 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2740 if (p->sink->id == snd_soc_dapm_spk ||
2741 p->sink->id == snd_soc_dapm_hp ||
2742 p->sink->id == snd_soc_dapm_line ||
2743 p->sink->id == snd_soc_dapm_input) {
2744 ep = 0;
2745 break;
2746 }
2747 }
2748 break;
2749 case snd_soc_dapm_line:
2750 ep = 0;
2751 snd_soc_dapm_for_each_direction(dir) {
2752 if (!list_empty(&w->edges[dir]))
2753 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2754 }
2755 break;
2756 default:
2757 return;
2758 }
2759
2760 w->is_ep = ep;
2761}
2762
2763static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2764 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2765 const char *control)
2766{
2767 bool dynamic_source = false;
2768 bool dynamic_sink = false;
2769
2770 if (!control)
2771 return 0;
2772
2773 switch (source->id) {
2774 case snd_soc_dapm_demux:
2775 dynamic_source = true;
2776 break;
2777 default:
2778 break;
2779 }
2780
2781 switch (sink->id) {
2782 case snd_soc_dapm_mux:
2783 case snd_soc_dapm_switch:
2784 case snd_soc_dapm_mixer:
2785 case snd_soc_dapm_mixer_named_ctl:
2786 dynamic_sink = true;
2787 break;
2788 default:
2789 break;
2790 }
2791
2792 if (dynamic_source && dynamic_sink) {
2793 dev_err(dapm->dev,
2794 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2795 source->name, control, sink->name);
2796 return -EINVAL;
2797 } else if (!dynamic_source && !dynamic_sink) {
2798 dev_err(dapm->dev,
2799 "Control not supported for path %s -> [%s] -> %s\n",
2800 source->name, control, sink->name);
2801 return -EINVAL;
2802 }
2803
2804 return 0;
2805}
2806
2807static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2808 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2809 const char *control,
2810 int (*connected)(struct snd_soc_dapm_widget *source,
2811 struct snd_soc_dapm_widget *sink))
2812{
2813 struct snd_soc_dapm_widget *widgets[2];
2814 enum snd_soc_dapm_direction dir;
2815 struct snd_soc_dapm_path *path;
2816 int ret;
2817
2818 if (wsink->is_supply && !wsource->is_supply) {
2819 dev_err(dapm->dev,
2820 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2821 wsource->name, wsink->name);
2822 return -EINVAL;
2823 }
2824
2825 if (connected && !wsource->is_supply) {
2826 dev_err(dapm->dev,
2827 "connected() callback only supported for supply widgets (%s -> %s)\n",
2828 wsource->name, wsink->name);
2829 return -EINVAL;
2830 }
2831
2832 if (wsource->is_supply && control) {
2833 dev_err(dapm->dev,
2834 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2835 wsource->name, control, wsink->name);
2836 return -EINVAL;
2837 }
2838
2839 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2840 if (ret)
2841 return ret;
2842
2843 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2844 if (!path)
2845 return -ENOMEM;
2846
2847 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2848 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2849 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2850 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2851
2852 path->connected = connected;
2853 INIT_LIST_HEAD(&path->list);
2854 INIT_LIST_HEAD(&path->list_kcontrol);
2855
2856 if (wsource->is_supply || wsink->is_supply)
2857 path->is_supply = 1;
2858
2859
2860 if (control == NULL) {
2861 path->connect = 1;
2862 } else {
2863 switch (wsource->id) {
2864 case snd_soc_dapm_demux:
2865 ret = dapm_connect_mux(dapm, path, control, wsource);
2866 if (ret)
2867 goto err;
2868 break;
2869 default:
2870 break;
2871 }
2872
2873 switch (wsink->id) {
2874 case snd_soc_dapm_mux:
2875 ret = dapm_connect_mux(dapm, path, control, wsink);
2876 if (ret != 0)
2877 goto err;
2878 break;
2879 case snd_soc_dapm_switch:
2880 case snd_soc_dapm_mixer:
2881 case snd_soc_dapm_mixer_named_ctl:
2882 ret = dapm_connect_mixer(dapm, path, control);
2883 if (ret != 0)
2884 goto err;
2885 break;
2886 default:
2887 break;
2888 }
2889 }
2890
2891 list_add(&path->list, &dapm->card->paths);
2892 snd_soc_dapm_for_each_direction(dir)
2893 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2894
2895 snd_soc_dapm_for_each_direction(dir) {
2896 dapm_update_widget_flags(widgets[dir]);
2897 dapm_mark_dirty(widgets[dir], "Route added");
2898 }
2899
2900 if (dapm->card->instantiated && path->connect)
2901 dapm_path_invalidate(path);
2902
2903 return 0;
2904err:
2905 kfree(path);
2906 return ret;
2907}
2908
2909static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2910 const struct snd_soc_dapm_route *route)
2911{
2912 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2913 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2914 const char *sink;
2915 const char *source;
2916 char prefixed_sink[80];
2917 char prefixed_source[80];
2918 const char *prefix;
2919 unsigned int sink_ref = 0;
2920 unsigned int source_ref = 0;
2921 int ret;
2922
2923 prefix = soc_dapm_prefix(dapm);
2924 if (prefix) {
2925 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2926 prefix, route->sink);
2927 sink = prefixed_sink;
2928 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2929 prefix, route->source);
2930 source = prefixed_source;
2931 } else {
2932 sink = route->sink;
2933 source = route->source;
2934 }
2935
2936 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2937 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2938
2939 if (wsink && wsource)
2940 goto skip_search;
2941
2942
2943
2944
2945
2946 for_each_card_widgets(dapm->card, w) {
2947 if (!wsink && !(strcmp(w->name, sink))) {
2948 wtsink = w;
2949 if (w->dapm == dapm) {
2950 wsink = w;
2951 if (wsource)
2952 break;
2953 }
2954 sink_ref++;
2955 if (sink_ref > 1)
2956 dev_warn(dapm->dev,
2957 "ASoC: sink widget %s overwritten\n",
2958 w->name);
2959 continue;
2960 }
2961 if (!wsource && !(strcmp(w->name, source))) {
2962 wtsource = w;
2963 if (w->dapm == dapm) {
2964 wsource = w;
2965 if (wsink)
2966 break;
2967 }
2968 source_ref++;
2969 if (source_ref > 1)
2970 dev_warn(dapm->dev,
2971 "ASoC: source widget %s overwritten\n",
2972 w->name);
2973 }
2974 }
2975
2976 if (!wsink)
2977 wsink = wtsink;
2978 if (!wsource)
2979 wsource = wtsource;
2980
2981 if (wsource == NULL) {
2982 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2983 route->source);
2984 return -ENODEV;
2985 }
2986 if (wsink == NULL) {
2987 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2988 route->sink);
2989 return -ENODEV;
2990 }
2991
2992skip_search:
2993 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2994 dapm_wcache_update(&dapm->path_source_cache, wsource);
2995
2996 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2997 route->connected);
2998 if (ret)
2999 goto err;
3000
3001 return 0;
3002err:
3003 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
3004 source, route->control, sink);
3005 return ret;
3006}
3007
3008static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
3009 const struct snd_soc_dapm_route *route)
3010{
3011 struct snd_soc_dapm_path *path, *p;
3012 const char *sink;
3013 const char *source;
3014 char prefixed_sink[80];
3015 char prefixed_source[80];
3016 const char *prefix;
3017
3018 if (route->control) {
3019 dev_err(dapm->dev,
3020 "ASoC: Removal of routes with controls not supported\n");
3021 return -EINVAL;
3022 }
3023
3024 prefix = soc_dapm_prefix(dapm);
3025 if (prefix) {
3026 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
3027 prefix, route->sink);
3028 sink = prefixed_sink;
3029 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
3030 prefix, route->source);
3031 source = prefixed_source;
3032 } else {
3033 sink = route->sink;
3034 source = route->source;
3035 }
3036
3037 path = NULL;
3038 list_for_each_entry(p, &dapm->card->paths, list) {
3039 if (strcmp(p->source->name, source) != 0)
3040 continue;
3041 if (strcmp(p->sink->name, sink) != 0)
3042 continue;
3043 path = p;
3044 break;
3045 }
3046
3047 if (path) {
3048 struct snd_soc_dapm_widget *wsource = path->source;
3049 struct snd_soc_dapm_widget *wsink = path->sink;
3050
3051 dapm_mark_dirty(wsource, "Route removed");
3052 dapm_mark_dirty(wsink, "Route removed");
3053 if (path->connect)
3054 dapm_path_invalidate(path);
3055
3056 dapm_free_path(path);
3057
3058
3059 dapm_update_widget_flags(wsource);
3060 dapm_update_widget_flags(wsink);
3061 } else {
3062 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
3063 source, sink);
3064 }
3065
3066 return 0;
3067}
3068
3069
3070
3071
3072
3073
3074
3075
3076
3077
3078
3079
3080
3081
3082int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
3083 const struct snd_soc_dapm_route *route, int num)
3084{
3085 int i, ret = 0;
3086
3087 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3088 for (i = 0; i < num; i++) {
3089 int r = snd_soc_dapm_add_route(dapm, route);
3090 if (r < 0) {
3091 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
3092 route->source,
3093 route->control ? route->control : "direct",
3094 route->sink);
3095 ret = r;
3096 }
3097 route++;
3098 }
3099 mutex_unlock(&dapm->card->dapm_mutex);
3100
3101 return ret;
3102}
3103EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
3104
3105
3106
3107
3108
3109
3110
3111
3112
3113int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3114 const struct snd_soc_dapm_route *route, int num)
3115{
3116 int i;
3117
3118 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3119 for (i = 0; i < num; i++) {
3120 snd_soc_dapm_del_route(dapm, route);
3121 route++;
3122 }
3123 mutex_unlock(&dapm->card->dapm_mutex);
3124
3125 return 0;
3126}
3127EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3128
3129static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3130 const struct snd_soc_dapm_route *route)
3131{
3132 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3133 route->source,
3134 true);
3135 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3136 route->sink,
3137 true);
3138 struct snd_soc_dapm_path *path;
3139 int count = 0;
3140
3141 if (!source) {
3142 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3143 route->source);
3144 return -ENODEV;
3145 }
3146
3147 if (!sink) {
3148 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3149 route->sink);
3150 return -ENODEV;
3151 }
3152
3153 if (route->control || route->connected)
3154 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3155 route->source, route->sink);
3156
3157 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3158 if (path->sink == sink) {
3159 path->weak = 1;
3160 count++;
3161 }
3162 }
3163
3164 if (count == 0)
3165 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3166 route->source, route->sink);
3167 if (count > 1)
3168 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3169 count, route->source, route->sink);
3170
3171 return 0;
3172}
3173
3174
3175
3176
3177
3178
3179
3180
3181
3182
3183
3184
3185
3186
3187
3188
3189
3190int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3191 const struct snd_soc_dapm_route *route, int num)
3192{
3193 int i;
3194 int ret = 0;
3195
3196 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3197 for (i = 0; i < num; i++) {
3198 int err = snd_soc_dapm_weak_route(dapm, route);
3199 if (err)
3200 ret = err;
3201 route++;
3202 }
3203 mutex_unlock(&dapm->card->dapm_mutex);
3204
3205 return ret;
3206}
3207EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3208
3209
3210
3211
3212
3213
3214
3215
3216
3217int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3218{
3219 struct snd_soc_dapm_widget *w;
3220 unsigned int val;
3221
3222 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3223
3224 for_each_card_widgets(card, w)
3225 {
3226 if (w->new)
3227 continue;
3228
3229 if (w->num_kcontrols) {
3230 w->kcontrols = kcalloc(w->num_kcontrols,
3231 sizeof(struct snd_kcontrol *),
3232 GFP_KERNEL);
3233 if (!w->kcontrols) {
3234 mutex_unlock(&card->dapm_mutex);
3235 return -ENOMEM;
3236 }
3237 }
3238
3239 switch(w->id) {
3240 case snd_soc_dapm_switch:
3241 case snd_soc_dapm_mixer:
3242 case snd_soc_dapm_mixer_named_ctl:
3243 dapm_new_mixer(w);
3244 break;
3245 case snd_soc_dapm_mux:
3246 case snd_soc_dapm_demux:
3247 dapm_new_mux(w);
3248 break;
3249 case snd_soc_dapm_pga:
3250 case snd_soc_dapm_effect:
3251 case snd_soc_dapm_out_drv:
3252 dapm_new_pga(w);
3253 break;
3254 case snd_soc_dapm_dai_link:
3255 dapm_new_dai_link(w);
3256 break;
3257 default:
3258 break;
3259 }
3260
3261
3262 if (w->reg >= 0) {
3263 val = soc_dapm_read(w->dapm, w->reg);
3264 val = val >> w->shift;
3265 val &= w->mask;
3266 if (val == w->on_val)
3267 w->power = 1;
3268 }
3269
3270 w->new = 1;
3271
3272 dapm_mark_dirty(w, "new widget");
3273 dapm_debugfs_add_widget(w);
3274 }
3275
3276 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3277 mutex_unlock(&card->dapm_mutex);
3278 return 0;
3279}
3280EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3281
3282
3283
3284
3285
3286
3287
3288
3289
3290
3291int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3292 struct snd_ctl_elem_value *ucontrol)
3293{
3294 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3295 struct snd_soc_card *card = dapm->card;
3296 struct soc_mixer_control *mc =
3297 (struct soc_mixer_control *)kcontrol->private_value;
3298 int reg = mc->reg;
3299 unsigned int shift = mc->shift;
3300 int max = mc->max;
3301 unsigned int width = fls(max);
3302 unsigned int mask = (1 << fls(max)) - 1;
3303 unsigned int invert = mc->invert;
3304 unsigned int reg_val, val, rval = 0;
3305
3306 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3307 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3308 reg_val = soc_dapm_read(dapm, reg);
3309 val = (reg_val >> shift) & mask;
3310
3311 if (reg != mc->rreg)
3312 reg_val = soc_dapm_read(dapm, mc->rreg);
3313
3314 if (snd_soc_volsw_is_stereo(mc))
3315 rval = (reg_val >> mc->rshift) & mask;
3316 } else {
3317 reg_val = dapm_kcontrol_get_value(kcontrol);
3318 val = reg_val & mask;
3319
3320 if (snd_soc_volsw_is_stereo(mc))
3321 rval = (reg_val >> width) & mask;
3322 }
3323 mutex_unlock(&card->dapm_mutex);
3324
3325 if (invert)
3326 ucontrol->value.integer.value[0] = max - val;
3327 else
3328 ucontrol->value.integer.value[0] = val;
3329
3330 if (snd_soc_volsw_is_stereo(mc)) {
3331 if (invert)
3332 ucontrol->value.integer.value[1] = max - rval;
3333 else
3334 ucontrol->value.integer.value[1] = rval;
3335 }
3336
3337 return 0;
3338}
3339EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3340
3341
3342
3343
3344
3345
3346
3347
3348
3349
3350int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3351 struct snd_ctl_elem_value *ucontrol)
3352{
3353 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3354 struct snd_soc_card *card = dapm->card;
3355 struct soc_mixer_control *mc =
3356 (struct soc_mixer_control *)kcontrol->private_value;
3357 int reg = mc->reg;
3358 unsigned int shift = mc->shift;
3359 int max = mc->max;
3360 unsigned int width = fls(max);
3361 unsigned int mask = (1 << width) - 1;
3362 unsigned int invert = mc->invert;
3363 unsigned int val, rval = 0;
3364 int connect, rconnect = -1, change, reg_change = 0;
3365 struct snd_soc_dapm_update update = {};
3366 int ret = 0;
3367
3368 val = (ucontrol->value.integer.value[0] & mask);
3369 connect = !!val;
3370
3371 if (invert)
3372 val = max - val;
3373
3374 if (snd_soc_volsw_is_stereo(mc)) {
3375 rval = (ucontrol->value.integer.value[1] & mask);
3376 rconnect = !!rval;
3377 if (invert)
3378 rval = max - rval;
3379 }
3380
3381 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3382
3383
3384 if (width > sizeof(unsigned int) * 8 / 2)
3385 dev_warn(dapm->dev,
3386 "ASoC: control %s field width limit exceeded\n",
3387 kcontrol->id.name);
3388 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3389
3390 if (reg != SND_SOC_NOPM) {
3391 val = val << shift;
3392 rval = rval << mc->rshift;
3393
3394 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3395
3396 if (snd_soc_volsw_is_stereo(mc))
3397 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3398 mask << mc->rshift,
3399 rval);
3400 }
3401
3402 if (change || reg_change) {
3403 if (reg_change) {
3404 if (snd_soc_volsw_is_stereo(mc)) {
3405 update.has_second_set = true;
3406 update.reg2 = mc->rreg;
3407 update.mask2 = mask << mc->rshift;
3408 update.val2 = rval;
3409 }
3410 update.kcontrol = kcontrol;
3411 update.reg = reg;
3412 update.mask = mask << shift;
3413 update.val = val;
3414 card->update = &update;
3415 }
3416 change |= reg_change;
3417
3418 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3419 rconnect);
3420
3421 card->update = NULL;
3422 }
3423
3424 mutex_unlock(&card->dapm_mutex);
3425
3426 if (ret > 0)
3427 snd_soc_dpcm_runtime_update(card);
3428
3429 return change;
3430}
3431EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3432
3433
3434
3435
3436
3437
3438
3439
3440
3441
3442int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3443 struct snd_ctl_elem_value *ucontrol)
3444{
3445 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3446 struct snd_soc_card *card = dapm->card;
3447 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3448 unsigned int reg_val, val;
3449
3450 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3451 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3452 reg_val = soc_dapm_read(dapm, e->reg);
3453 } else {
3454 reg_val = dapm_kcontrol_get_value(kcontrol);
3455 }
3456 mutex_unlock(&card->dapm_mutex);
3457
3458 val = (reg_val >> e->shift_l) & e->mask;
3459 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3460 if (e->shift_l != e->shift_r) {
3461 val = (reg_val >> e->shift_r) & e->mask;
3462 val = snd_soc_enum_val_to_item(e, val);
3463 ucontrol->value.enumerated.item[1] = val;
3464 }
3465
3466 return 0;
3467}
3468EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3469
3470
3471
3472
3473
3474
3475
3476
3477
3478
3479int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3480 struct snd_ctl_elem_value *ucontrol)
3481{
3482 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3483 struct snd_soc_card *card = dapm->card;
3484 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3485 unsigned int *item = ucontrol->value.enumerated.item;
3486 unsigned int val, change, reg_change = 0;
3487 unsigned int mask;
3488 struct snd_soc_dapm_update update = {};
3489 int ret = 0;
3490
3491 if (item[0] >= e->items)
3492 return -EINVAL;
3493
3494 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3495 mask = e->mask << e->shift_l;
3496 if (e->shift_l != e->shift_r) {
3497 if (item[1] > e->items)
3498 return -EINVAL;
3499 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3500 mask |= e->mask << e->shift_r;
3501 }
3502
3503 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3504
3505 change = dapm_kcontrol_set_value(kcontrol, val);
3506
3507 if (e->reg != SND_SOC_NOPM)
3508 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3509
3510 if (change || reg_change) {
3511 if (reg_change) {
3512 update.kcontrol = kcontrol;
3513 update.reg = e->reg;
3514 update.mask = mask;
3515 update.val = val;
3516 card->update = &update;
3517 }
3518 change |= reg_change;
3519
3520 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3521
3522 card->update = NULL;
3523 }
3524
3525 mutex_unlock(&card->dapm_mutex);
3526
3527 if (ret > 0)
3528 snd_soc_dpcm_runtime_update(card);
3529
3530 return change;
3531}
3532EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3533
3534
3535
3536
3537
3538
3539
3540
3541
3542int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3543 struct snd_ctl_elem_info *uinfo)
3544{
3545 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3546 uinfo->count = 1;
3547 uinfo->value.integer.min = 0;
3548 uinfo->value.integer.max = 1;
3549
3550 return 0;
3551}
3552EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3553
3554
3555
3556
3557
3558
3559
3560int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3561 struct snd_ctl_elem_value *ucontrol)
3562{
3563 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3564 const char *pin = (const char *)kcontrol->private_value;
3565
3566 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3567
3568 ucontrol->value.integer.value[0] =
3569 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3570
3571 mutex_unlock(&card->dapm_mutex);
3572
3573 return 0;
3574}
3575EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3576
3577
3578
3579
3580
3581
3582
3583int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3584 struct snd_ctl_elem_value *ucontrol)
3585{
3586 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3587 const char *pin = (const char *)kcontrol->private_value;
3588 int ret;
3589
3590 if (ucontrol->value.integer.value[0])
3591 ret = snd_soc_dapm_enable_pin(&card->dapm, pin);
3592 else
3593 ret = snd_soc_dapm_disable_pin(&card->dapm, pin);
3594
3595 snd_soc_dapm_sync(&card->dapm);
3596 return ret;
3597}
3598EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3599
3600struct snd_soc_dapm_widget *
3601snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3602 const struct snd_soc_dapm_widget *widget)
3603{
3604 enum snd_soc_dapm_direction dir;
3605 struct snd_soc_dapm_widget *w;
3606 const char *prefix;
3607 int ret;
3608
3609 if ((w = dapm_cnew_widget(widget)) == NULL)
3610 return ERR_PTR(-ENOMEM);
3611
3612 switch (w->id) {
3613 case snd_soc_dapm_regulator_supply:
3614 w->regulator = devm_regulator_get(dapm->dev, w->name);
3615 if (IS_ERR(w->regulator)) {
3616 ret = PTR_ERR(w->regulator);
3617 goto request_failed;
3618 }
3619
3620 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3621 ret = regulator_allow_bypass(w->regulator, true);
3622 if (ret != 0)
3623 dev_warn(dapm->dev,
3624 "ASoC: Failed to bypass %s: %d\n",
3625 w->name, ret);
3626 }
3627 break;
3628 case snd_soc_dapm_pinctrl:
3629 w->pinctrl = devm_pinctrl_get(dapm->dev);
3630 if (IS_ERR(w->pinctrl)) {
3631 ret = PTR_ERR(w->pinctrl);
3632 goto request_failed;
3633 }
3634
3635
3636 dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD);
3637 break;
3638 case snd_soc_dapm_clock_supply:
3639 w->clk = devm_clk_get(dapm->dev, w->name);
3640 if (IS_ERR(w->clk)) {
3641 ret = PTR_ERR(w->clk);
3642 goto request_failed;
3643 }
3644 break;
3645 default:
3646 break;
3647 }
3648
3649 prefix = soc_dapm_prefix(dapm);
3650 if (prefix)
3651 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3652 else
3653 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3654 if (w->name == NULL) {
3655 kfree_const(w->sname);
3656 kfree(w);
3657 return ERR_PTR(-ENOMEM);
3658 }
3659
3660 switch (w->id) {
3661 case snd_soc_dapm_mic:
3662 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3663 w->power_check = dapm_generic_check_power;
3664 break;
3665 case snd_soc_dapm_input:
3666 if (!dapm->card->fully_routed)
3667 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3668 w->power_check = dapm_generic_check_power;
3669 break;
3670 case snd_soc_dapm_spk:
3671 case snd_soc_dapm_hp:
3672 w->is_ep = SND_SOC_DAPM_EP_SINK;
3673 w->power_check = dapm_generic_check_power;
3674 break;
3675 case snd_soc_dapm_output:
3676 if (!dapm->card->fully_routed)
3677 w->is_ep = SND_SOC_DAPM_EP_SINK;
3678 w->power_check = dapm_generic_check_power;
3679 break;
3680 case snd_soc_dapm_vmid:
3681 case snd_soc_dapm_siggen:
3682 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3683 w->power_check = dapm_always_on_check_power;
3684 break;
3685 case snd_soc_dapm_sink:
3686 w->is_ep = SND_SOC_DAPM_EP_SINK;
3687 w->power_check = dapm_always_on_check_power;
3688 break;
3689
3690 case snd_soc_dapm_mux:
3691 case snd_soc_dapm_demux:
3692 case snd_soc_dapm_switch:
3693 case snd_soc_dapm_mixer:
3694 case snd_soc_dapm_mixer_named_ctl:
3695 case snd_soc_dapm_adc:
3696 case snd_soc_dapm_aif_out:
3697 case snd_soc_dapm_dac:
3698 case snd_soc_dapm_aif_in:
3699 case snd_soc_dapm_pga:
3700 case snd_soc_dapm_buffer:
3701 case snd_soc_dapm_scheduler:
3702 case snd_soc_dapm_effect:
3703 case snd_soc_dapm_src:
3704 case snd_soc_dapm_asrc:
3705 case snd_soc_dapm_encoder:
3706 case snd_soc_dapm_decoder:
3707 case snd_soc_dapm_out_drv:
3708 case snd_soc_dapm_micbias:
3709 case snd_soc_dapm_line:
3710 case snd_soc_dapm_dai_link:
3711 case snd_soc_dapm_dai_out:
3712 case snd_soc_dapm_dai_in:
3713 w->power_check = dapm_generic_check_power;
3714 break;
3715 case snd_soc_dapm_supply:
3716 case snd_soc_dapm_regulator_supply:
3717 case snd_soc_dapm_pinctrl:
3718 case snd_soc_dapm_clock_supply:
3719 case snd_soc_dapm_kcontrol:
3720 w->is_supply = 1;
3721 w->power_check = dapm_supply_check_power;
3722 break;
3723 default:
3724 w->power_check = dapm_always_on_check_power;
3725 break;
3726 }
3727
3728 w->dapm = dapm;
3729 INIT_LIST_HEAD(&w->list);
3730 INIT_LIST_HEAD(&w->dirty);
3731
3732 list_add_tail(&w->list, &dapm->card->widgets);
3733
3734 snd_soc_dapm_for_each_direction(dir) {
3735 INIT_LIST_HEAD(&w->edges[dir]);
3736 w->endpoints[dir] = -1;
3737 }
3738
3739
3740 w->connected = 1;
3741 return w;
3742
3743request_failed:
3744 if (ret != -EPROBE_DEFER)
3745 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3746 w->name, ret);
3747
3748 kfree_const(w->sname);
3749 kfree(w);
3750 return ERR_PTR(ret);
3751}
3752
3753
3754
3755
3756
3757
3758
3759
3760
3761
3762struct snd_soc_dapm_widget *
3763snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3764 const struct snd_soc_dapm_widget *widget)
3765{
3766 struct snd_soc_dapm_widget *w;
3767
3768 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3769 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3770 mutex_unlock(&dapm->card->dapm_mutex);
3771
3772 return w;
3773}
3774EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3775
3776
3777
3778
3779
3780
3781
3782
3783
3784
3785
3786int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3787 const struct snd_soc_dapm_widget *widget,
3788 int num)
3789{
3790 int i;
3791 int ret = 0;
3792
3793 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3794 for (i = 0; i < num; i++) {
3795 struct snd_soc_dapm_widget *w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3796 if (IS_ERR(w)) {
3797 ret = PTR_ERR(w);
3798 break;
3799 }
3800 widget++;
3801 }
3802 mutex_unlock(&dapm->card->dapm_mutex);
3803 return ret;
3804}
3805EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3806
3807static int
3808snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3809 struct snd_pcm_substream *substream)
3810{
3811 struct snd_soc_dapm_path *path;
3812 struct snd_soc_dai *source, *sink;
3813 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
3814 struct snd_pcm_hw_params *params = NULL;
3815 const struct snd_soc_pcm_stream *config = NULL;
3816 struct snd_pcm_runtime *runtime = NULL;
3817 unsigned int fmt;
3818 int ret = 0;
3819
3820 params = kzalloc(sizeof(*params), GFP_KERNEL);
3821 if (!params)
3822 return -ENOMEM;
3823
3824 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3825 if (!runtime) {
3826 ret = -ENOMEM;
3827 goto out;
3828 }
3829
3830 substream->runtime = runtime;
3831
3832 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3833 snd_soc_dapm_widget_for_each_source_path(w, path) {
3834 source = path->source->priv;
3835
3836 ret = snd_soc_dai_startup(source, substream);
3837 if (ret < 0)
3838 goto out;
3839
3840 snd_soc_dai_activate(source, substream->stream);
3841 }
3842
3843 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3844 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3845 sink = path->sink->priv;
3846
3847 ret = snd_soc_dai_startup(sink, substream);
3848 if (ret < 0)
3849 goto out;
3850
3851 snd_soc_dai_activate(sink, substream->stream);
3852 }
3853
3854 substream->hw_opened = 1;
3855
3856
3857
3858
3859
3860
3861 config = rtd->dai_link->params + rtd->params_select;
3862 if (WARN_ON(!config)) {
3863 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3864 ret = -EINVAL;
3865 goto out;
3866 }
3867
3868
3869 if (config->formats) {
3870 fmt = ffs(config->formats) - 1;
3871 } else {
3872 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3873 config->formats);
3874
3875 ret = -EINVAL;
3876 goto out;
3877 }
3878
3879 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3880 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3881 config->rate_min;
3882 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3883 config->rate_max;
3884 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3885 = config->channels_min;
3886 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3887 = config->channels_max;
3888
3889 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3890 snd_soc_dapm_widget_for_each_source_path(w, path) {
3891 source = path->source->priv;
3892
3893 ret = snd_soc_dai_hw_params(source, substream, params);
3894 if (ret < 0)
3895 goto out;
3896
3897 dapm_update_dai_unlocked(substream, params, source);
3898 }
3899
3900 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3901 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3902 sink = path->sink->priv;
3903
3904 ret = snd_soc_dai_hw_params(sink, substream, params);
3905 if (ret < 0)
3906 goto out;
3907
3908 dapm_update_dai_unlocked(substream, params, sink);
3909 }
3910
3911 runtime->format = params_format(params);
3912 runtime->subformat = params_subformat(params);
3913 runtime->channels = params_channels(params);
3914 runtime->rate = params_rate(params);
3915
3916out:
3917 kfree(params);
3918 return ret;
3919}
3920
3921static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3922 struct snd_kcontrol *kcontrol, int event)
3923{
3924 struct snd_soc_dapm_path *path;
3925 struct snd_soc_dai *source, *sink;
3926 struct snd_pcm_substream *substream = w->priv;
3927 int ret = 0, saved_stream = substream->stream;
3928
3929 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3930 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3931 return -EINVAL;
3932
3933 switch (event) {
3934 case SND_SOC_DAPM_PRE_PMU:
3935 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3936 if (ret < 0)
3937 goto out;
3938
3939 break;
3940
3941 case SND_SOC_DAPM_POST_PMU:
3942 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3943 sink = path->sink->priv;
3944
3945 snd_soc_dai_digital_mute(sink, 0, SNDRV_PCM_STREAM_PLAYBACK);
3946 ret = 0;
3947 }
3948 break;
3949
3950 case SND_SOC_DAPM_PRE_PMD:
3951 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3952 sink = path->sink->priv;
3953
3954 snd_soc_dai_digital_mute(sink, 1, SNDRV_PCM_STREAM_PLAYBACK);
3955 ret = 0;
3956 }
3957
3958 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3959 snd_soc_dapm_widget_for_each_source_path(w, path) {
3960 source = path->source->priv;
3961 snd_soc_dai_hw_free(source, substream, 0);
3962 }
3963
3964 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3965 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3966 sink = path->sink->priv;
3967 snd_soc_dai_hw_free(sink, substream, 0);
3968 }
3969
3970 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3971 snd_soc_dapm_widget_for_each_source_path(w, path) {
3972 source = path->source->priv;
3973 snd_soc_dai_deactivate(source, substream->stream);
3974 snd_soc_dai_shutdown(source, substream, 0);
3975 }
3976
3977 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3978 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3979 sink = path->sink->priv;
3980 snd_soc_dai_deactivate(sink, substream->stream);
3981 snd_soc_dai_shutdown(sink, substream, 0);
3982 }
3983 break;
3984
3985 case SND_SOC_DAPM_POST_PMD:
3986 kfree(substream->runtime);
3987 break;
3988
3989 default:
3990 WARN(1, "Unknown event %d\n", event);
3991 ret = -EINVAL;
3992 }
3993
3994out:
3995
3996 substream->stream = saved_stream;
3997 return ret;
3998}
3999
4000static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4001 struct snd_ctl_elem_value *ucontrol)
4002{
4003 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4004 struct snd_soc_pcm_runtime *rtd = w->priv;
4005
4006 ucontrol->value.enumerated.item[0] = rtd->params_select;
4007
4008 return 0;
4009}
4010
4011static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4012 struct snd_ctl_elem_value *ucontrol)
4013{
4014 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4015 struct snd_soc_pcm_runtime *rtd = w->priv;
4016
4017
4018 if (w->power)
4019 return -EBUSY;
4020
4021 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4022 return 0;
4023
4024 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4025 return -EINVAL;
4026
4027 rtd->params_select = ucontrol->value.enumerated.item[0];
4028
4029 return 1;
4030}
4031
4032static void
4033snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4034 unsigned long *private_value,
4035 int num_params,
4036 const char **w_param_text)
4037{
4038 int count;
4039
4040 devm_kfree(card->dev, (void *)*private_value);
4041
4042 if (!w_param_text)
4043 return;
4044
4045 for (count = 0 ; count < num_params; count++)
4046 devm_kfree(card->dev, (void *)w_param_text[count]);
4047 devm_kfree(card->dev, w_param_text);
4048}
4049
4050static struct snd_kcontrol_new *
4051snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4052 char *link_name,
4053 const struct snd_soc_pcm_stream *params,
4054 int num_params, const char **w_param_text,
4055 unsigned long *private_value)
4056{
4057 struct soc_enum w_param_enum[] = {
4058 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4059 };
4060 struct snd_kcontrol_new kcontrol_dai_link[] = {
4061 SOC_ENUM_EXT(NULL, w_param_enum[0],
4062 snd_soc_dapm_dai_link_get,
4063 snd_soc_dapm_dai_link_put),
4064 };
4065 struct snd_kcontrol_new *kcontrol_news;
4066 const struct snd_soc_pcm_stream *config = params;
4067 int count;
4068
4069 for (count = 0 ; count < num_params; count++) {
4070 if (!config->stream_name) {
4071 dev_warn(card->dapm.dev,
4072 "ASoC: anonymous config %d for dai link %s\n",
4073 count, link_name);
4074 w_param_text[count] =
4075 devm_kasprintf(card->dev, GFP_KERNEL,
4076 "Anonymous Configuration %d",
4077 count);
4078 } else {
4079 w_param_text[count] = devm_kmemdup(card->dev,
4080 config->stream_name,
4081 strlen(config->stream_name) + 1,
4082 GFP_KERNEL);
4083 }
4084 if (!w_param_text[count])
4085 goto outfree_w_param;
4086 config++;
4087 }
4088
4089 w_param_enum[0].items = num_params;
4090 w_param_enum[0].texts = w_param_text;
4091
4092 *private_value =
4093 (unsigned long) devm_kmemdup(card->dev,
4094 (void *)(kcontrol_dai_link[0].private_value),
4095 sizeof(struct soc_enum), GFP_KERNEL);
4096 if (!*private_value) {
4097 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4098 link_name);
4099 goto outfree_w_param;
4100 }
4101 kcontrol_dai_link[0].private_value = *private_value;
4102
4103 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4104 sizeof(struct snd_kcontrol_new),
4105 GFP_KERNEL);
4106 if (!kcontrol_news) {
4107 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4108 link_name);
4109 goto outfree_w_param;
4110 }
4111 return kcontrol_news;
4112
4113outfree_w_param:
4114 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4115 return NULL;
4116}
4117
4118static struct snd_soc_dapm_widget *
4119snd_soc_dapm_new_dai(struct snd_soc_card *card,
4120 struct snd_pcm_substream *substream,
4121 char *id)
4122{
4123 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
4124 struct snd_soc_dapm_widget template;
4125 struct snd_soc_dapm_widget *w;
4126 const char **w_param_text;
4127 unsigned long private_value = 0;
4128 char *link_name;
4129 int ret;
4130
4131 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4132 rtd->dai_link->name, id);
4133 if (!link_name)
4134 return ERR_PTR(-ENOMEM);
4135
4136 memset(&template, 0, sizeof(template));
4137 template.reg = SND_SOC_NOPM;
4138 template.id = snd_soc_dapm_dai_link;
4139 template.name = link_name;
4140 template.event = snd_soc_dai_link_event;
4141 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4142 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4143 template.kcontrol_news = NULL;
4144
4145
4146 if (rtd->dai_link->num_params > 1) {
4147 w_param_text = devm_kcalloc(card->dev,
4148 rtd->dai_link->num_params,
4149 sizeof(char *), GFP_KERNEL);
4150 if (!w_param_text) {
4151 ret = -ENOMEM;
4152 goto param_fail;
4153 }
4154
4155 template.num_kcontrols = 1;
4156 template.kcontrol_news =
4157 snd_soc_dapm_alloc_kcontrol(card,
4158 link_name,
4159 rtd->dai_link->params,
4160 rtd->dai_link->num_params,
4161 w_param_text, &private_value);
4162 if (!template.kcontrol_news) {
4163 ret = -ENOMEM;
4164 goto param_fail;
4165 }
4166 } else {
4167 w_param_text = NULL;
4168 }
4169 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4170
4171 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4172 if (IS_ERR(w)) {
4173 ret = PTR_ERR(w);
4174 dev_err(rtd->dev, "ASoC: Failed to create %s widget: %d\n",
4175 link_name, ret);
4176 goto outfree_kcontrol_news;
4177 }
4178
4179 w->priv = substream;
4180
4181 return w;
4182
4183outfree_kcontrol_news:
4184 devm_kfree(card->dev, (void *)template.kcontrol_news);
4185 snd_soc_dapm_free_kcontrol(card, &private_value,
4186 rtd->dai_link->num_params, w_param_text);
4187param_fail:
4188 devm_kfree(card->dev, link_name);
4189 return ERR_PTR(ret);
4190}
4191
4192int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4193 struct snd_soc_dai *dai)
4194{
4195 struct snd_soc_dapm_widget template;
4196 struct snd_soc_dapm_widget *w;
4197
4198 WARN_ON(dapm->dev != dai->dev);
4199
4200 memset(&template, 0, sizeof(template));
4201 template.reg = SND_SOC_NOPM;
4202
4203 if (dai->driver->playback.stream_name) {
4204 template.id = snd_soc_dapm_dai_in;
4205 template.name = dai->driver->playback.stream_name;
4206 template.sname = dai->driver->playback.stream_name;
4207
4208 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4209 template.name);
4210
4211 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4212 if (IS_ERR(w))
4213 return PTR_ERR(w);
4214
4215 w->priv = dai;
4216 dai->playback_widget = w;
4217 }
4218
4219 if (dai->driver->capture.stream_name) {
4220 template.id = snd_soc_dapm_dai_out;
4221 template.name = dai->driver->capture.stream_name;
4222 template.sname = dai->driver->capture.stream_name;
4223
4224 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4225 template.name);
4226
4227 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4228 if (IS_ERR(w))
4229 return PTR_ERR(w);
4230
4231 w->priv = dai;
4232 dai->capture_widget = w;
4233 }
4234
4235 return 0;
4236}
4237
4238int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4239{
4240 struct snd_soc_dapm_widget *dai_w, *w;
4241 struct snd_soc_dapm_widget *src, *sink;
4242 struct snd_soc_dai *dai;
4243
4244
4245 for_each_card_widgets(card, dai_w) {
4246 switch (dai_w->id) {
4247 case snd_soc_dapm_dai_in:
4248 case snd_soc_dapm_dai_out:
4249 break;
4250 default:
4251 continue;
4252 }
4253
4254
4255 if (!dai_w->priv) {
4256 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4257 dai_w->name);
4258 continue;
4259 }
4260
4261 dai = dai_w->priv;
4262
4263
4264 for_each_card_widgets(card, w) {
4265 if (w->dapm != dai_w->dapm)
4266 continue;
4267
4268 switch (w->id) {
4269 case snd_soc_dapm_dai_in:
4270 case snd_soc_dapm_dai_out:
4271 continue;
4272 default:
4273 break;
4274 }
4275
4276 if (!w->sname || !strstr(w->sname, dai_w->sname))
4277 continue;
4278
4279 if (dai_w->id == snd_soc_dapm_dai_in) {
4280 src = dai_w;
4281 sink = w;
4282 } else {
4283 src = w;
4284 sink = dai_w;
4285 }
4286 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4287 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4288 }
4289 }
4290
4291 return 0;
4292}
4293
4294static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
4295 struct snd_soc_dai *src_dai,
4296 struct snd_soc_dapm_widget *src,
4297 struct snd_soc_dapm_widget *dai,
4298 struct snd_soc_dai *sink_dai,
4299 struct snd_soc_dapm_widget *sink)
4300{
4301 dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n",
4302 src_dai->component->name, src->name,
4303 sink_dai->component->name, sink->name);
4304
4305 if (dai) {
4306 snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL);
4307 src = dai;
4308 }
4309
4310 snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
4311}
4312
4313static void dapm_connect_dai_pair(struct snd_soc_card *card,
4314 struct snd_soc_pcm_runtime *rtd,
4315 struct snd_soc_dai *codec_dai,
4316 struct snd_soc_dai *cpu_dai)
4317{
4318 struct snd_soc_dai_link *dai_link = rtd->dai_link;
4319 struct snd_soc_dapm_widget *dai, *codec, *playback_cpu, *capture_cpu;
4320 struct snd_pcm_substream *substream;
4321 struct snd_pcm_str *streams = rtd->pcm->streams;
4322
4323 if (dai_link->params) {
4324 playback_cpu = cpu_dai->capture_widget;
4325 capture_cpu = cpu_dai->playback_widget;
4326 } else {
4327 playback_cpu = cpu_dai->playback_widget;
4328 capture_cpu = cpu_dai->capture_widget;
4329 }
4330
4331
4332 codec = codec_dai->playback_widget;
4333
4334 if (playback_cpu && codec) {
4335 if (dai_link->params && !rtd->playback_widget) {
4336 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4337 dai = snd_soc_dapm_new_dai(card, substream, "playback");
4338 if (IS_ERR(dai))
4339 goto capture;
4340 rtd->playback_widget = dai;
4341 }
4342
4343 dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu,
4344 rtd->playback_widget,
4345 codec_dai, codec);
4346 }
4347
4348capture:
4349
4350 codec = codec_dai->capture_widget;
4351
4352 if (codec && capture_cpu) {
4353 if (dai_link->params && !rtd->capture_widget) {
4354 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4355 dai = snd_soc_dapm_new_dai(card, substream, "capture");
4356 if (IS_ERR(dai))
4357 return;
4358 rtd->capture_widget = dai;
4359 }
4360
4361 dapm_connect_dai_routes(&card->dapm, codec_dai, codec,
4362 rtd->capture_widget,
4363 cpu_dai, capture_cpu);
4364 }
4365}
4366
4367static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4368 int event)
4369{
4370 struct snd_soc_dapm_widget *w;
4371
4372 w = snd_soc_dai_get_widget(dai, stream);
4373
4374 if (w) {
4375 unsigned int ep;
4376
4377 dapm_mark_dirty(w, "stream event");
4378
4379 if (w->id == snd_soc_dapm_dai_in) {
4380 ep = SND_SOC_DAPM_EP_SOURCE;
4381 dapm_widget_invalidate_input_paths(w);
4382 } else {
4383 ep = SND_SOC_DAPM_EP_SINK;
4384 dapm_widget_invalidate_output_paths(w);
4385 }
4386
4387 switch (event) {
4388 case SND_SOC_DAPM_STREAM_START:
4389 w->active = 1;
4390 w->is_ep = ep;
4391 break;
4392 case SND_SOC_DAPM_STREAM_STOP:
4393 w->active = 0;
4394 w->is_ep = 0;
4395 break;
4396 case SND_SOC_DAPM_STREAM_SUSPEND:
4397 case SND_SOC_DAPM_STREAM_RESUME:
4398 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4399 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4400 break;
4401 }
4402 }
4403}
4404
4405void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4406{
4407 struct snd_soc_pcm_runtime *rtd;
4408 struct snd_soc_dai *codec_dai;
4409 int i;
4410
4411
4412 for_each_card_rtds(card, rtd) {
4413
4414
4415
4416
4417 if (rtd->dai_link->dynamic)
4418 continue;
4419
4420 if (rtd->num_cpus == 1) {
4421 for_each_rtd_codec_dais(rtd, i, codec_dai)
4422 dapm_connect_dai_pair(card, rtd, codec_dai,
4423 asoc_rtd_to_cpu(rtd, 0));
4424 } else if (rtd->num_codecs == rtd->num_cpus) {
4425 for_each_rtd_codec_dais(rtd, i, codec_dai)
4426 dapm_connect_dai_pair(card, rtd, codec_dai,
4427 asoc_rtd_to_cpu(rtd, i));
4428 } else {
4429 dev_err(card->dev,
4430 "N cpus to M codecs link is not supported yet\n");
4431 }
4432 }
4433}
4434
4435static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4436 int event)
4437{
4438 struct snd_soc_dai *dai;
4439 int i;
4440
4441 for_each_rtd_dais(rtd, i, dai)
4442 soc_dapm_dai_stream_event(dai, stream, event);
4443
4444 dapm_power_widgets(rtd->card, event);
4445}
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4459 int event)
4460{
4461 struct snd_soc_card *card = rtd->card;
4462
4463 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4464 soc_dapm_stream_event(rtd, stream, event);
4465 mutex_unlock(&card->dapm_mutex);
4466}
4467
4468void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
4469{
4470 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
4471 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
4472
4473 snd_soc_dapm_stream_event(rtd,
4474 SNDRV_PCM_STREAM_PLAYBACK,
4475 SND_SOC_DAPM_STREAM_STOP);
4476 } else {
4477
4478 rtd->pop_wait = 1;
4479 queue_delayed_work(system_power_efficient_wq,
4480 &rtd->delayed_work,
4481 msecs_to_jiffies(rtd->pmdown_time));
4482 }
4483 } else {
4484
4485 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
4486 SND_SOC_DAPM_STREAM_STOP);
4487 }
4488}
4489EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4505 const char *pin)
4506{
4507 return snd_soc_dapm_set_pin(dapm, pin, 1);
4508}
4509EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4523{
4524 int ret;
4525
4526 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4527
4528 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4529
4530 mutex_unlock(&dapm->card->dapm_mutex);
4531
4532 return ret;
4533}
4534EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4551 const char *pin)
4552{
4553 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4554
4555 if (!w) {
4556 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4557 return -EINVAL;
4558 }
4559
4560 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4561 if (!w->connected) {
4562
4563
4564
4565
4566 dapm_widget_invalidate_input_paths(w);
4567 dapm_widget_invalidate_output_paths(w);
4568 w->connected = 1;
4569 }
4570 w->force = 1;
4571 dapm_mark_dirty(w, "force enable");
4572
4573 return 0;
4574}
4575EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4590 const char *pin)
4591{
4592 int ret;
4593
4594 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4595
4596 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4597
4598 mutex_unlock(&dapm->card->dapm_mutex);
4599
4600 return ret;
4601}
4602EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4617 const char *pin)
4618{
4619 return snd_soc_dapm_set_pin(dapm, pin, 0);
4620}
4621EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4634 const char *pin)
4635{
4636 int ret;
4637
4638 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4639
4640 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4641
4642 mutex_unlock(&dapm->card->dapm_mutex);
4643
4644 return ret;
4645}
4646EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4665 const char *pin)
4666{
4667 return snd_soc_dapm_set_pin(dapm, pin, 0);
4668}
4669EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4686{
4687 int ret;
4688
4689 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4690
4691 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4692
4693 mutex_unlock(&dapm->card->dapm_mutex);
4694
4695 return ret;
4696}
4697EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4709 const char *pin)
4710{
4711 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4712
4713 if (w)
4714 return w->connected;
4715
4716 return 0;
4717}
4718EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4732 const char *pin)
4733{
4734 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4735
4736 if (!w) {
4737 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4738 return -EINVAL;
4739 }
4740
4741 w->ignore_suspend = 1;
4742
4743 return 0;
4744}
4745EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4746
4747
4748
4749
4750
4751
4752
4753void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4754{
4755 dapm_debugfs_cleanup(dapm);
4756 dapm_free_widgets(dapm);
4757 list_del(&dapm->list);
4758}
4759EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4760
4761void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4762 struct snd_soc_card *card,
4763 struct snd_soc_component *component)
4764{
4765 dapm->card = card;
4766 dapm->component = component;
4767 dapm->bias_level = SND_SOC_BIAS_OFF;
4768
4769 if (component) {
4770 dapm->dev = component->dev;
4771 dapm->idle_bias_off = !component->driver->idle_bias_on;
4772 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4773 } else {
4774 dapm->dev = card->dev;
4775 }
4776
4777 INIT_LIST_HEAD(&dapm->list);
4778
4779 list_add(&dapm->list, &card->dapm_list);
4780}
4781EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4782
4783static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4784{
4785 struct snd_soc_card *card = dapm->card;
4786 struct snd_soc_dapm_widget *w;
4787 LIST_HEAD(down_list);
4788 int powerdown = 0;
4789
4790 mutex_lock(&card->dapm_mutex);
4791
4792 for_each_card_widgets(dapm->card, w) {
4793 if (w->dapm != dapm)
4794 continue;
4795 if (w->power) {
4796 dapm_seq_insert(w, &down_list, false);
4797 w->new_power = 0;
4798 powerdown = 1;
4799 }
4800 }
4801
4802
4803
4804
4805 if (powerdown) {
4806 if (dapm->bias_level == SND_SOC_BIAS_ON)
4807 snd_soc_dapm_set_bias_level(dapm,
4808 SND_SOC_BIAS_PREPARE);
4809 dapm_seq_run(card, &down_list, 0, false);
4810 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4811 snd_soc_dapm_set_bias_level(dapm,
4812 SND_SOC_BIAS_STANDBY);
4813 }
4814
4815 mutex_unlock(&card->dapm_mutex);
4816}
4817
4818
4819
4820
4821void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4822{
4823 struct snd_soc_dapm_context *dapm;
4824
4825 for_each_card_dapms(card, dapm) {
4826 if (dapm != &card->dapm) {
4827 soc_dapm_shutdown_dapm(dapm);
4828 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4829 snd_soc_dapm_set_bias_level(dapm,
4830 SND_SOC_BIAS_OFF);
4831 }
4832 }
4833
4834 soc_dapm_shutdown_dapm(&card->dapm);
4835 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4836 snd_soc_dapm_set_bias_level(&card->dapm,
4837 SND_SOC_BIAS_OFF);
4838}
4839
4840
4841MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4842MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4843MODULE_LICENSE("GPL");
4844