2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/headphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed power down of audio subsystem to reduce pops between a quick
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/init.h>
29 #include <linux/async.h>
30 #include <linux/delay.h>
32 #include <linux/bitops.h>
33 #include <linux/platform_device.h>
34 #include <linux/jiffies.h>
35 #include <linux/debugfs.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/regulator/consumer.h>
38 #include <linux/clk.h>
39 #include <linux/slab.h>
40 #include <sound/core.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/initval.h>
46 #include <trace/events/asoc.h>
48 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
50 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
51 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
53 int (*connected)(struct snd_soc_dapm_widget *source,
54 struct snd_soc_dapm_widget *sink));
55 static struct snd_soc_dapm_widget *
56 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
57 const struct snd_soc_dapm_widget *widget);
59 /* dapm power sequences - make this per codec in the future */
60 static int dapm_up_seq[] = {
61 [snd_soc_dapm_pre] = 0,
62 [snd_soc_dapm_supply] = 1,
63 [snd_soc_dapm_regulator_supply] = 1,
64 [snd_soc_dapm_clock_supply] = 1,
65 [snd_soc_dapm_micbias] = 2,
66 [snd_soc_dapm_dai_link] = 2,
67 [snd_soc_dapm_dai_in] = 3,
68 [snd_soc_dapm_dai_out] = 3,
69 [snd_soc_dapm_aif_in] = 3,
70 [snd_soc_dapm_aif_out] = 3,
71 [snd_soc_dapm_mic] = 4,
72 [snd_soc_dapm_mux] = 5,
73 [snd_soc_dapm_virt_mux] = 5,
74 [snd_soc_dapm_value_mux] = 5,
75 [snd_soc_dapm_dac] = 6,
76 [snd_soc_dapm_switch] = 7,
77 [snd_soc_dapm_mixer] = 7,
78 [snd_soc_dapm_mixer_named_ctl] = 7,
79 [snd_soc_dapm_pga] = 8,
80 [snd_soc_dapm_adc] = 9,
81 [snd_soc_dapm_out_drv] = 10,
82 [snd_soc_dapm_hp] = 10,
83 [snd_soc_dapm_spk] = 10,
84 [snd_soc_dapm_line] = 10,
85 [snd_soc_dapm_kcontrol] = 11,
86 [snd_soc_dapm_post] = 12,
89 static int dapm_down_seq[] = {
90 [snd_soc_dapm_pre] = 0,
91 [snd_soc_dapm_kcontrol] = 1,
92 [snd_soc_dapm_adc] = 2,
93 [snd_soc_dapm_hp] = 3,
94 [snd_soc_dapm_spk] = 3,
95 [snd_soc_dapm_line] = 3,
96 [snd_soc_dapm_out_drv] = 3,
97 [snd_soc_dapm_pga] = 4,
98 [snd_soc_dapm_switch] = 5,
99 [snd_soc_dapm_mixer_named_ctl] = 5,
100 [snd_soc_dapm_mixer] = 5,
101 [snd_soc_dapm_dac] = 6,
102 [snd_soc_dapm_mic] = 7,
103 [snd_soc_dapm_micbias] = 8,
104 [snd_soc_dapm_mux] = 9,
105 [snd_soc_dapm_virt_mux] = 9,
106 [snd_soc_dapm_value_mux] = 9,
107 [snd_soc_dapm_aif_in] = 10,
108 [snd_soc_dapm_aif_out] = 10,
109 [snd_soc_dapm_dai_in] = 10,
110 [snd_soc_dapm_dai_out] = 10,
111 [snd_soc_dapm_dai_link] = 11,
112 [snd_soc_dapm_clock_supply] = 12,
113 [snd_soc_dapm_regulator_supply] = 12,
114 [snd_soc_dapm_supply] = 12,
115 [snd_soc_dapm_post] = 13,
118 static void pop_wait(u32 pop_time)
121 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
124 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
132 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
137 vsnprintf(buf, PAGE_SIZE, fmt, args);
138 dev_info(dev, "%s", buf);
144 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
146 return !list_empty(&w->dirty);
149 void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
151 if (!dapm_dirty_widget(w)) {
152 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
154 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
157 EXPORT_SYMBOL_GPL(dapm_mark_dirty);
159 void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
161 struct snd_soc_card *card = dapm->card;
162 struct snd_soc_dapm_widget *w;
164 mutex_lock(&card->dapm_mutex);
166 list_for_each_entry(w, &card->widgets, list) {
168 case snd_soc_dapm_input:
169 case snd_soc_dapm_output:
170 dapm_mark_dirty(w, "Rechecking inputs and outputs");
177 mutex_unlock(&card->dapm_mutex);
179 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
181 /* create a new dapm widget */
182 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
183 const struct snd_soc_dapm_widget *_widget)
185 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
188 struct dapm_kcontrol_data {
190 struct snd_soc_dapm_widget *widget;
191 struct list_head paths;
192 struct snd_soc_dapm_widget_list *wlist;
195 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
196 struct snd_kcontrol *kcontrol)
198 struct dapm_kcontrol_data *data;
199 struct soc_mixer_control *mc;
201 data = kzalloc(sizeof(*data), GFP_KERNEL);
203 dev_err(widget->dapm->dev,
204 "ASoC: can't allocate kcontrol data for %s\n",
209 INIT_LIST_HEAD(&data->paths);
211 switch (widget->id) {
212 case snd_soc_dapm_switch:
213 case snd_soc_dapm_mixer:
214 case snd_soc_dapm_mixer_named_ctl:
215 mc = (struct soc_mixer_control *)kcontrol->private_value;
217 if (mc->autodisable) {
218 struct snd_soc_dapm_widget template;
220 memset(&template, 0, sizeof(template));
221 template.reg = mc->reg;
222 template.mask = (1 << fls(mc->max)) - 1;
223 template.shift = mc->shift;
225 template.off_val = mc->max;
227 template.off_val = 0;
228 template.on_val = template.off_val;
229 template.id = snd_soc_dapm_kcontrol;
230 template.name = kcontrol->id.name;
232 data->value = template.on_val;
234 data->widget = snd_soc_dapm_new_control(widget->dapm,
246 kcontrol->private_data = data;
251 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
253 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
259 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
260 const struct snd_kcontrol *kcontrol)
262 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
267 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
268 struct snd_soc_dapm_widget *widget)
270 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
271 struct snd_soc_dapm_widget_list *new_wlist;
275 n = data->wlist->num_widgets + 1;
279 new_wlist = krealloc(data->wlist,
280 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
284 new_wlist->widgets[n - 1] = widget;
285 new_wlist->num_widgets = n;
287 data->wlist = new_wlist;
292 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
293 struct snd_soc_dapm_path *path)
295 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
297 list_add_tail(&path->list_kcontrol, &data->paths);
300 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
301 path->source, NULL, NULL);
305 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
307 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
312 return data->widget->power;
315 static struct list_head *dapm_kcontrol_get_path_list(
316 const struct snd_kcontrol *kcontrol)
318 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
323 #define dapm_kcontrol_for_each_path(path, kcontrol) \
324 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
327 static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
329 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
334 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
337 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
339 if (data->value == value)
343 data->widget->on_val = value;
351 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
352 * @kcontrol: The kcontrol
354 struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
356 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec;
358 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
360 static void dapm_reset(struct snd_soc_card *card)
362 struct snd_soc_dapm_widget *w;
364 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
366 list_for_each_entry(w, &card->widgets, list) {
367 w->new_power = w->power;
368 w->power_checked = false;
374 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
377 return snd_soc_read(w->codec, reg);
378 else if (w->platform)
379 return snd_soc_platform_read(w->platform, reg);
381 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
385 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
388 return snd_soc_write(w->codec, reg, val);
389 else if (w->platform)
390 return snd_soc_platform_write(w->platform, reg, val);
392 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
396 static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
398 if (w->codec && !w->codec->using_regmap)
399 mutex_lock(&w->codec->mutex);
400 else if (w->platform)
401 mutex_lock(&w->platform->mutex);
404 static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
406 if (w->codec && !w->codec->using_regmap)
407 mutex_unlock(&w->codec->mutex);
408 else if (w->platform)
409 mutex_unlock(&w->platform->mutex);
412 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
413 unsigned short reg, unsigned int mask, unsigned int value)
416 unsigned int old, new;
419 if (w->codec && w->codec->using_regmap) {
420 ret = regmap_update_bits_check(w->codec->control_data,
421 reg, mask, value, &change);
426 ret = soc_widget_read(w, reg);
428 soc_widget_unlock(w);
433 new = (old & ~mask) | (value & mask);
436 ret = soc_widget_write(w, reg, new);
438 soc_widget_unlock(w);
442 soc_widget_unlock(w);
449 * snd_soc_dapm_set_bias_level - set the bias level for the system
450 * @dapm: DAPM context
451 * @level: level to configure
453 * Configure the bias (power) levels for the SoC audio device.
455 * Returns 0 for success else error.
457 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
458 enum snd_soc_bias_level level)
460 struct snd_soc_card *card = dapm->card;
463 trace_snd_soc_bias_level_start(card, level);
465 if (card && card->set_bias_level)
466 ret = card->set_bias_level(card, dapm, level);
471 if (dapm->codec->driver->set_bias_level)
472 ret = dapm->codec->driver->set_bias_level(dapm->codec,
475 dapm->bias_level = level;
476 } else if (!card || dapm != &card->dapm) {
477 dapm->bias_level = level;
483 if (card && card->set_bias_level_post)
484 ret = card->set_bias_level_post(card, dapm, level);
486 trace_snd_soc_bias_level_done(card, level);
491 /* set up initial codec paths */
492 static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
493 struct snd_soc_dapm_path *p, int i)
496 case snd_soc_dapm_switch:
497 case snd_soc_dapm_mixer:
498 case snd_soc_dapm_mixer_named_ctl: {
500 struct soc_mixer_control *mc = (struct soc_mixer_control *)
501 w->kcontrol_news[i].private_value;
502 unsigned int reg = mc->reg;
503 unsigned int shift = mc->shift;
505 unsigned int mask = (1 << fls(max)) - 1;
506 unsigned int invert = mc->invert;
508 val = soc_widget_read(w, reg);
509 val = (val >> shift) & mask;
516 case snd_soc_dapm_mux: {
517 struct soc_enum *e = (struct soc_enum *)
518 w->kcontrol_news[i].private_value;
521 val = soc_widget_read(w, e->reg);
522 item = (val >> e->shift_l) & e->mask;
524 if (item < e->max && !strcmp(p->name, e->texts[item]))
530 case snd_soc_dapm_virt_mux: {
531 struct soc_enum *e = (struct soc_enum *)
532 w->kcontrol_news[i].private_value;
535 /* since a virtual mux has no backing registers to
536 * decide which path to connect, it will try to match
537 * with the first enumeration. This is to ensure
538 * that the default mux choice (the first) will be
539 * correctly powered up during initialization.
541 if (!strcmp(p->name, e->texts[0]))
545 case snd_soc_dapm_value_mux: {
546 struct soc_enum *e = (struct soc_enum *)
547 w->kcontrol_news[i].private_value;
550 val = soc_widget_read(w, e->reg);
551 val = (val >> e->shift_l) & e->mask;
552 for (item = 0; item < e->max; item++) {
553 if (val == e->values[item])
557 if (item < e->max && !strcmp(p->name, e->texts[item]))
563 /* does not affect routing - always connected */
564 case snd_soc_dapm_pga:
565 case snd_soc_dapm_out_drv:
566 case snd_soc_dapm_output:
567 case snd_soc_dapm_adc:
568 case snd_soc_dapm_input:
569 case snd_soc_dapm_siggen:
570 case snd_soc_dapm_dac:
571 case snd_soc_dapm_micbias:
572 case snd_soc_dapm_vmid:
573 case snd_soc_dapm_supply:
574 case snd_soc_dapm_regulator_supply:
575 case snd_soc_dapm_clock_supply:
576 case snd_soc_dapm_aif_in:
577 case snd_soc_dapm_aif_out:
578 case snd_soc_dapm_dai_in:
579 case snd_soc_dapm_dai_out:
580 case snd_soc_dapm_hp:
581 case snd_soc_dapm_mic:
582 case snd_soc_dapm_spk:
583 case snd_soc_dapm_line:
584 case snd_soc_dapm_dai_link:
585 case snd_soc_dapm_kcontrol:
588 /* does affect routing - dynamically connected */
589 case snd_soc_dapm_pre:
590 case snd_soc_dapm_post:
596 /* connect mux widget to its interconnecting audio paths */
597 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
598 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
599 struct snd_soc_dapm_path *path, const char *control_name,
600 const struct snd_kcontrol_new *kcontrol)
602 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
605 for (i = 0; i < e->max; i++) {
606 if (!(strcmp(control_name, e->texts[i]))) {
607 list_add(&path->list, &dapm->card->paths);
608 list_add(&path->list_sink, &dest->sources);
609 list_add(&path->list_source, &src->sinks);
610 path->name = (char*)e->texts[i];
611 dapm_set_path_status(dest, path, 0);
619 /* connect mixer widget to its interconnecting audio paths */
620 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
621 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
622 struct snd_soc_dapm_path *path, const char *control_name)
626 /* search for mixer kcontrol */
627 for (i = 0; i < dest->num_kcontrols; i++) {
628 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
629 list_add(&path->list, &dapm->card->paths);
630 list_add(&path->list_sink, &dest->sources);
631 list_add(&path->list_source, &src->sinks);
632 path->name = dest->kcontrol_news[i].name;
633 dapm_set_path_status(dest, path, i);
640 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
641 struct snd_soc_dapm_widget *kcontrolw,
642 const struct snd_kcontrol_new *kcontrol_new,
643 struct snd_kcontrol **kcontrol)
645 struct snd_soc_dapm_widget *w;
650 list_for_each_entry(w, &dapm->card->widgets, list) {
651 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
653 for (i = 0; i < w->num_kcontrols; i++) {
654 if (&w->kcontrol_news[i] == kcontrol_new) {
656 *kcontrol = w->kcontrols[i];
666 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
667 * create it. Either way, add the widget into the control's widget list
669 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
672 struct snd_soc_dapm_context *dapm = w->dapm;
673 struct snd_card *card = dapm->card->snd_card;
677 struct snd_kcontrol *kcontrol;
678 bool wname_in_long_name, kcname_in_long_name;
684 prefix = dapm->codec->name_prefix;
689 prefix_len = strlen(prefix) + 1;
693 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
698 wname_in_long_name = false;
699 kcname_in_long_name = true;
702 case snd_soc_dapm_switch:
703 case snd_soc_dapm_mixer:
704 wname_in_long_name = true;
705 kcname_in_long_name = true;
707 case snd_soc_dapm_mixer_named_ctl:
708 wname_in_long_name = false;
709 kcname_in_long_name = true;
711 case snd_soc_dapm_mux:
712 case snd_soc_dapm_virt_mux:
713 case snd_soc_dapm_value_mux:
714 wname_in_long_name = true;
715 kcname_in_long_name = false;
722 if (wname_in_long_name && kcname_in_long_name) {
724 * The control will get a prefix from the control
725 * creation process but we're also using the same
726 * prefix for widgets so cut the prefix off the
727 * front of the widget name.
729 long_name = kasprintf(GFP_KERNEL, "%s %s",
730 w->name + prefix_len,
731 w->kcontrol_news[kci].name);
732 if (long_name == NULL)
736 } else if (wname_in_long_name) {
738 name = w->name + prefix_len;
741 name = w->kcontrol_news[kci].name;
744 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
749 kcontrol->private_free = dapm_kcontrol_free;
751 ret = dapm_kcontrol_data_alloc(w, kcontrol);
753 snd_ctl_free_one(kcontrol);
757 ret = snd_ctl_add(card, kcontrol);
760 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
766 ret = dapm_kcontrol_add_widget(kcontrol, w);
770 w->kcontrols[kci] = kcontrol;
775 /* create new dapm mixer control */
776 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
779 struct snd_soc_dapm_path *path;
782 for (i = 0; i < w->num_kcontrols; i++) {
784 list_for_each_entry(path, &w->sources, list_sink) {
785 /* mixer/mux paths name must match control name */
786 if (path->name != (char *)w->kcontrol_news[i].name)
789 if (w->kcontrols[i]) {
790 dapm_kcontrol_add_path(w->kcontrols[i], path);
794 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
798 dapm_kcontrol_add_path(w->kcontrols[i], path);
805 /* create new dapm mux control */
806 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
808 struct snd_soc_dapm_context *dapm = w->dapm;
809 struct snd_soc_dapm_path *path;
812 if (w->num_kcontrols != 1) {
814 "ASoC: mux %s has incorrect number of controls\n",
819 if (list_empty(&w->sources)) {
820 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
824 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
828 list_for_each_entry(path, &w->sources, list_sink)
829 dapm_kcontrol_add_path(w->kcontrols[0], path);
834 /* create new dapm volume control */
835 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
837 if (w->num_kcontrols)
838 dev_err(w->dapm->dev,
839 "ASoC: PGA controls not supported: '%s'\n", w->name);
844 /* reset 'walked' bit for each dapm path */
845 static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
846 struct list_head *sink)
848 struct snd_soc_dapm_path *p;
850 list_for_each_entry(p, sink, list_source) {
853 dapm_clear_walk_output(dapm, &p->sink->sinks);
858 static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
859 struct list_head *source)
861 struct snd_soc_dapm_path *p;
863 list_for_each_entry(p, source, list_sink) {
866 dapm_clear_walk_input(dapm, &p->source->sources);
872 /* We implement power down on suspend by checking the power state of
873 * the ALSA card - when we are suspending the ALSA state for the card
876 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
878 int level = snd_power_get_state(widget->dapm->card->snd_card);
881 case SNDRV_CTL_POWER_D3hot:
882 case SNDRV_CTL_POWER_D3cold:
883 if (widget->ignore_suspend)
884 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
886 return widget->ignore_suspend;
892 /* add widget to list if it's not already in the list */
893 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
894 struct snd_soc_dapm_widget *w)
896 struct snd_soc_dapm_widget_list *wlist;
897 int wlistsize, wlistentries, i;
904 /* is this widget already in the list */
905 for (i = 0; i < wlist->num_widgets; i++) {
906 if (wlist->widgets[i] == w)
910 /* allocate some new space */
911 wlistentries = wlist->num_widgets + 1;
912 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
913 wlistentries * sizeof(struct snd_soc_dapm_widget *);
914 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
916 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
922 /* insert the widget */
923 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
924 w->name, wlist->num_widgets);
926 wlist->widgets[wlist->num_widgets] = w;
927 wlist->num_widgets++;
932 * Recursively check for a completed path to an active or physically connected
933 * output widget. Returns number of complete paths.
935 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
936 struct snd_soc_dapm_widget_list **list)
938 struct snd_soc_dapm_path *path;
941 if (widget->outputs >= 0)
942 return widget->outputs;
944 DAPM_UPDATE_STAT(widget, path_checks);
946 switch (widget->id) {
947 case snd_soc_dapm_supply:
948 case snd_soc_dapm_regulator_supply:
949 case snd_soc_dapm_clock_supply:
950 case snd_soc_dapm_kcontrol:
956 switch (widget->id) {
957 case snd_soc_dapm_adc:
958 case snd_soc_dapm_aif_out:
959 case snd_soc_dapm_dai_out:
960 if (widget->active) {
961 widget->outputs = snd_soc_dapm_suspend_check(widget);
962 return widget->outputs;
968 if (widget->connected) {
969 /* connected pin ? */
970 if (widget->id == snd_soc_dapm_output && !widget->ext) {
971 widget->outputs = snd_soc_dapm_suspend_check(widget);
972 return widget->outputs;
975 /* connected jack or spk ? */
976 if (widget->id == snd_soc_dapm_hp ||
977 widget->id == snd_soc_dapm_spk ||
978 (widget->id == snd_soc_dapm_line &&
979 !list_empty(&widget->sources))) {
980 widget->outputs = snd_soc_dapm_suspend_check(widget);
981 return widget->outputs;
985 list_for_each_entry(path, &widget->sinks, list_source) {
986 DAPM_UPDATE_STAT(widget, neighbour_checks);
997 trace_snd_soc_dapm_output_path(widget, path);
999 if (path->sink && path->connect) {
1003 /* do we need to add this widget to the list ? */
1006 err = dapm_list_add_widget(list, path->sink);
1008 dev_err(widget->dapm->dev,
1009 "ASoC: could not add widget %s\n",
1016 con += is_connected_output_ep(path->sink, list);
1022 widget->outputs = con;
1028 * Recursively check for a completed path to an active or physically connected
1029 * input widget. Returns number of complete paths.
1031 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1032 struct snd_soc_dapm_widget_list **list)
1034 struct snd_soc_dapm_path *path;
1037 if (widget->inputs >= 0)
1038 return widget->inputs;
1040 DAPM_UPDATE_STAT(widget, path_checks);
1042 switch (widget->id) {
1043 case snd_soc_dapm_supply:
1044 case snd_soc_dapm_regulator_supply:
1045 case snd_soc_dapm_clock_supply:
1046 case snd_soc_dapm_kcontrol:
1052 /* active stream ? */
1053 switch (widget->id) {
1054 case snd_soc_dapm_dac:
1055 case snd_soc_dapm_aif_in:
1056 case snd_soc_dapm_dai_in:
1057 if (widget->active) {
1058 widget->inputs = snd_soc_dapm_suspend_check(widget);
1059 return widget->inputs;
1065 if (widget->connected) {
1066 /* connected pin ? */
1067 if (widget->id == snd_soc_dapm_input && !widget->ext) {
1068 widget->inputs = snd_soc_dapm_suspend_check(widget);
1069 return widget->inputs;
1072 /* connected VMID/Bias for lower pops */
1073 if (widget->id == snd_soc_dapm_vmid) {
1074 widget->inputs = snd_soc_dapm_suspend_check(widget);
1075 return widget->inputs;
1078 /* connected jack ? */
1079 if (widget->id == snd_soc_dapm_mic ||
1080 (widget->id == snd_soc_dapm_line &&
1081 !list_empty(&widget->sinks))) {
1082 widget->inputs = snd_soc_dapm_suspend_check(widget);
1083 return widget->inputs;
1086 /* signal generator */
1087 if (widget->id == snd_soc_dapm_siggen) {
1088 widget->inputs = snd_soc_dapm_suspend_check(widget);
1089 return widget->inputs;
1093 list_for_each_entry(path, &widget->sources, list_sink) {
1094 DAPM_UPDATE_STAT(widget, neighbour_checks);
1105 trace_snd_soc_dapm_input_path(widget, path);
1107 if (path->source && path->connect) {
1111 /* do we need to add this widget to the list ? */
1114 err = dapm_list_add_widget(list, path->source);
1116 dev_err(widget->dapm->dev,
1117 "ASoC: could not add widget %s\n",
1124 con += is_connected_input_ep(path->source, list);
1130 widget->inputs = con;
1136 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1137 * @dai: the soc DAI.
1138 * @stream: stream direction.
1139 * @list: list of active widgets for this stream.
1141 * Queries DAPM graph as to whether an valid audio stream path exists for
1142 * the initial stream specified by name. This takes into account
1143 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1145 * Returns the number of valid paths or negative error.
1147 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1148 struct snd_soc_dapm_widget_list **list)
1150 struct snd_soc_card *card = dai->card;
1153 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1156 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1157 paths = is_connected_output_ep(dai->playback_widget, list);
1158 dapm_clear_walk_output(&card->dapm,
1159 &dai->playback_widget->sinks);
1161 paths = is_connected_input_ep(dai->capture_widget, list);
1162 dapm_clear_walk_input(&card->dapm,
1163 &dai->capture_widget->sources);
1166 trace_snd_soc_dapm_connected(paths, stream);
1167 mutex_unlock(&card->dapm_mutex);
1173 * Handler for generic register modifier widget.
1175 int dapm_reg_event(struct snd_soc_dapm_widget *w,
1176 struct snd_kcontrol *kcontrol, int event)
1180 if (SND_SOC_DAPM_EVENT_ON(event))
1185 soc_widget_update_bits_locked(w, -(w->reg + 1),
1186 w->mask << w->shift, val << w->shift);
1190 EXPORT_SYMBOL_GPL(dapm_reg_event);
1193 * Handler for regulator supply widget.
1195 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1196 struct snd_kcontrol *kcontrol, int event)
1200 if (SND_SOC_DAPM_EVENT_ON(event)) {
1201 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1202 ret = regulator_allow_bypass(w->regulator, false);
1204 dev_warn(w->dapm->dev,
1205 "ASoC: Failed to bypass %s: %d\n",
1209 return regulator_enable(w->regulator);
1211 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1212 ret = regulator_allow_bypass(w->regulator, true);
1214 dev_warn(w->dapm->dev,
1215 "ASoC: Failed to unbypass %s: %d\n",
1219 return regulator_disable_deferred(w->regulator, w->shift);
1222 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1225 * Handler for clock supply widget.
1227 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1228 struct snd_kcontrol *kcontrol, int event)
1233 #ifdef CONFIG_HAVE_CLK
1234 if (SND_SOC_DAPM_EVENT_ON(event)) {
1235 return clk_prepare_enable(w->clk);
1237 clk_disable_unprepare(w->clk);
1243 EXPORT_SYMBOL_GPL(dapm_clock_event);
1245 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1247 if (w->power_checked)
1248 return w->new_power;
1253 w->new_power = w->power_check(w);
1255 w->power_checked = true;
1257 return w->new_power;
1260 /* Generic check to see if a widget should be powered.
1262 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1266 DAPM_UPDATE_STAT(w, power_checks);
1268 in = is_connected_input_ep(w, NULL);
1269 dapm_clear_walk_input(w->dapm, &w->sources);
1270 out = is_connected_output_ep(w, NULL);
1271 dapm_clear_walk_output(w->dapm, &w->sinks);
1272 return out != 0 && in != 0;
1275 /* Check to see if an ADC has power */
1276 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1280 DAPM_UPDATE_STAT(w, power_checks);
1283 in = is_connected_input_ep(w, NULL);
1284 dapm_clear_walk_input(w->dapm, &w->sources);
1287 return dapm_generic_check_power(w);
1291 /* Check to see if a DAC has power */
1292 static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1296 DAPM_UPDATE_STAT(w, power_checks);
1299 out = is_connected_output_ep(w, NULL);
1300 dapm_clear_walk_output(w->dapm, &w->sinks);
1303 return dapm_generic_check_power(w);
1307 /* Check to see if a power supply is needed */
1308 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1310 struct snd_soc_dapm_path *path;
1312 DAPM_UPDATE_STAT(w, power_checks);
1314 /* Check if one of our outputs is connected */
1315 list_for_each_entry(path, &w->sinks, list_source) {
1316 DAPM_UPDATE_STAT(w, neighbour_checks);
1321 if (path->connected &&
1322 !path->connected(path->source, path->sink))
1328 if (dapm_widget_power_check(path->sink))
1335 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1340 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1341 struct snd_soc_dapm_widget *b,
1349 sort = dapm_down_seq;
1351 if (sort[a->id] != sort[b->id])
1352 return sort[a->id] - sort[b->id];
1353 if (a->subseq != b->subseq) {
1355 return a->subseq - b->subseq;
1357 return b->subseq - a->subseq;
1359 if (a->reg != b->reg)
1360 return a->reg - b->reg;
1361 if (a->dapm != b->dapm)
1362 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1367 /* Insert a widget in order into a DAPM power sequence. */
1368 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1369 struct list_head *list,
1372 struct snd_soc_dapm_widget *w;
1374 list_for_each_entry(w, list, power_list)
1375 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1376 list_add_tail(&new_widget->power_list, &w->power_list);
1380 list_add_tail(&new_widget->power_list, list);
1383 static void dapm_seq_check_event(struct snd_soc_card *card,
1384 struct snd_soc_dapm_widget *w, int event)
1386 const char *ev_name;
1390 case SND_SOC_DAPM_PRE_PMU:
1391 ev_name = "PRE_PMU";
1394 case SND_SOC_DAPM_POST_PMU:
1395 ev_name = "POST_PMU";
1398 case SND_SOC_DAPM_PRE_PMD:
1399 ev_name = "PRE_PMD";
1402 case SND_SOC_DAPM_POST_PMD:
1403 ev_name = "POST_PMD";
1406 case SND_SOC_DAPM_WILL_PMU:
1407 ev_name = "WILL_PMU";
1410 case SND_SOC_DAPM_WILL_PMD:
1411 ev_name = "WILL_PMD";
1419 if (w->new_power != power)
1422 if (w->event && (w->event_flags & event)) {
1423 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1425 trace_snd_soc_dapm_widget_event_start(w, event);
1426 ret = w->event(w, NULL, event);
1427 trace_snd_soc_dapm_widget_event_done(w, event);
1429 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1430 ev_name, w->name, ret);
1434 /* Apply the coalesced changes from a DAPM sequence */
1435 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1436 struct list_head *pending)
1438 struct snd_soc_dapm_widget *w;
1440 unsigned int value = 0;
1441 unsigned int mask = 0;
1443 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1446 list_for_each_entry(w, pending, power_list) {
1447 BUG_ON(reg != w->reg);
1448 w->power = w->new_power;
1450 mask |= w->mask << w->shift;
1452 value |= w->on_val << w->shift;
1454 value |= w->off_val << w->shift;
1456 pop_dbg(w->dapm->dev, card->pop_time,
1457 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1458 w->name, reg, value, mask);
1460 /* Check for events */
1461 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1462 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1466 /* Any widget will do, they should all be updating the
1469 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1472 pop_dbg(w->dapm->dev, card->pop_time,
1473 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1474 value, mask, reg, card->pop_time);
1475 pop_wait(card->pop_time);
1476 soc_widget_update_bits_locked(w, reg, mask, value);
1479 list_for_each_entry(w, pending, power_list) {
1480 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1481 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1485 /* Apply a DAPM power sequence.
1487 * We walk over a pre-sorted list of widgets to apply power to. In
1488 * order to minimise the number of writes to the device required
1489 * multiple widgets will be updated in a single write where possible.
1490 * Currently anything that requires more than a single write is not
1493 static void dapm_seq_run(struct snd_soc_card *card,
1494 struct list_head *list, int event, bool power_up)
1496 struct snd_soc_dapm_widget *w, *n;
1499 int cur_subseq = -1;
1500 int cur_reg = SND_SOC_NOPM;
1501 struct snd_soc_dapm_context *cur_dapm = NULL;
1508 sort = dapm_down_seq;
1510 list_for_each_entry_safe(w, n, list, power_list) {
1513 /* Do we need to apply any queued changes? */
1514 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1515 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1516 if (!list_empty(&pending))
1517 dapm_seq_run_coalesced(card, &pending);
1519 if (cur_dapm && cur_dapm->seq_notifier) {
1520 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1521 if (sort[i] == cur_sort)
1522 cur_dapm->seq_notifier(cur_dapm,
1527 INIT_LIST_HEAD(&pending);
1529 cur_subseq = INT_MIN;
1530 cur_reg = SND_SOC_NOPM;
1535 case snd_soc_dapm_pre:
1537 list_for_each_entry_safe_continue(w, n, list,
1540 if (event == SND_SOC_DAPM_STREAM_START)
1542 NULL, SND_SOC_DAPM_PRE_PMU);
1543 else if (event == SND_SOC_DAPM_STREAM_STOP)
1545 NULL, SND_SOC_DAPM_PRE_PMD);
1548 case snd_soc_dapm_post:
1550 list_for_each_entry_safe_continue(w, n, list,
1553 if (event == SND_SOC_DAPM_STREAM_START)
1555 NULL, SND_SOC_DAPM_POST_PMU);
1556 else if (event == SND_SOC_DAPM_STREAM_STOP)
1558 NULL, SND_SOC_DAPM_POST_PMD);
1562 /* Queue it up for application */
1563 cur_sort = sort[w->id];
1564 cur_subseq = w->subseq;
1567 list_move(&w->power_list, &pending);
1572 dev_err(w->dapm->dev,
1573 "ASoC: Failed to apply widget power: %d\n", ret);
1576 if (!list_empty(&pending))
1577 dapm_seq_run_coalesced(card, &pending);
1579 if (cur_dapm && cur_dapm->seq_notifier) {
1580 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1581 if (sort[i] == cur_sort)
1582 cur_dapm->seq_notifier(cur_dapm,
1587 static void dapm_widget_update(struct snd_soc_card *card)
1589 struct snd_soc_dapm_update *update = card->update;
1590 struct snd_soc_dapm_widget_list *wlist;
1591 struct snd_soc_dapm_widget *w = NULL;
1595 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1598 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1600 for (wi = 0; wi < wlist->num_widgets; wi++) {
1601 w = wlist->widgets[wi];
1603 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1604 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1606 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1614 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
1617 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1620 for (wi = 0; wi < wlist->num_widgets; wi++) {
1621 w = wlist->widgets[wi];
1623 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1624 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1626 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1632 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1633 * they're changing state.
1635 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1637 struct snd_soc_dapm_context *d = data;
1640 /* If we're off and we're not supposed to be go into STANDBY */
1641 if (d->bias_level == SND_SOC_BIAS_OFF &&
1642 d->target_bias_level != SND_SOC_BIAS_OFF) {
1644 pm_runtime_get_sync(d->dev);
1646 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1649 "ASoC: Failed to turn on bias: %d\n", ret);
1652 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1653 if (d->bias_level != d->target_bias_level) {
1654 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1657 "ASoC: Failed to prepare bias: %d\n", ret);
1661 /* Async callback run prior to DAPM sequences - brings to their final
1664 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1666 struct snd_soc_dapm_context *d = data;
1669 /* If we just powered the last thing off drop to standby bias */
1670 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1671 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1672 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1673 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1675 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1679 /* If we're in standby and can support bias off then do that */
1680 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1681 d->target_bias_level == SND_SOC_BIAS_OFF) {
1682 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1684 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1688 pm_runtime_put(d->dev);
1691 /* If we just powered up then move to active bias */
1692 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1693 d->target_bias_level == SND_SOC_BIAS_ON) {
1694 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1696 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1701 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1702 bool power, bool connect)
1704 /* If a connection is being made or broken then that update
1705 * will have marked the peer dirty, otherwise the widgets are
1706 * not connected and this update has no impact. */
1710 /* If the peer is already in the state we're moving to then we
1711 * won't have an impact on it. */
1712 if (power != peer->power)
1713 dapm_mark_dirty(peer, "peer state change");
1716 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1717 struct list_head *up_list,
1718 struct list_head *down_list)
1720 struct snd_soc_dapm_path *path;
1722 if (w->power == power)
1725 trace_snd_soc_dapm_widget_power(w, power);
1727 /* If we changed our power state perhaps our neigbours changed
1730 list_for_each_entry(path, &w->sources, list_sink) {
1732 dapm_widget_set_peer_power(path->source, power,
1737 case snd_soc_dapm_supply:
1738 case snd_soc_dapm_regulator_supply:
1739 case snd_soc_dapm_clock_supply:
1740 case snd_soc_dapm_kcontrol:
1741 /* Supplies can't affect their outputs, only their inputs */
1744 list_for_each_entry(path, &w->sinks, list_source) {
1746 dapm_widget_set_peer_power(path->sink, power,
1754 dapm_seq_insert(w, up_list, true);
1756 dapm_seq_insert(w, down_list, false);
1759 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1760 struct list_head *up_list,
1761 struct list_head *down_list)
1766 case snd_soc_dapm_pre:
1767 dapm_seq_insert(w, down_list, false);
1769 case snd_soc_dapm_post:
1770 dapm_seq_insert(w, up_list, true);
1774 power = dapm_widget_power_check(w);
1776 dapm_widget_set_power(w, power, up_list, down_list);
1782 * Scan each dapm widget for complete audio path.
1783 * A complete path is a route that has valid endpoints i.e.:-
1785 * o DAC to output pin.
1786 * o Input Pin to ADC.
1787 * o Input pin to Output pin (bypass, sidetone)
1788 * o DAC to ADC (loopback).
1790 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1792 struct snd_soc_dapm_widget *w;
1793 struct snd_soc_dapm_context *d;
1795 LIST_HEAD(down_list);
1796 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1797 enum snd_soc_bias_level bias;
1799 trace_snd_soc_dapm_start(card);
1801 list_for_each_entry(d, &card->dapm_list, list) {
1802 if (d->idle_bias_off)
1803 d->target_bias_level = SND_SOC_BIAS_OFF;
1805 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1810 /* Check which widgets we need to power and store them in
1811 * lists indicating if they should be powered up or down. We
1812 * only check widgets that have been flagged as dirty but note
1813 * that new widgets may be added to the dirty list while we
1816 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1817 dapm_power_one_widget(w, &up_list, &down_list);
1820 list_for_each_entry(w, &card->widgets, list) {
1822 case snd_soc_dapm_pre:
1823 case snd_soc_dapm_post:
1824 /* These widgets always need to be powered */
1827 list_del_init(&w->dirty);
1834 /* Supplies and micbiases only bring the
1835 * context up to STANDBY as unless something
1836 * else is active and passing audio they
1837 * generally don't require full power. Signal
1838 * generators are virtual pins and have no
1839 * power impact themselves.
1842 case snd_soc_dapm_siggen:
1844 case snd_soc_dapm_supply:
1845 case snd_soc_dapm_regulator_supply:
1846 case snd_soc_dapm_clock_supply:
1847 case snd_soc_dapm_micbias:
1848 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1849 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1852 d->target_bias_level = SND_SOC_BIAS_ON;
1859 /* Force all contexts in the card to the same bias state if
1860 * they're not ground referenced.
1862 bias = SND_SOC_BIAS_OFF;
1863 list_for_each_entry(d, &card->dapm_list, list)
1864 if (d->target_bias_level > bias)
1865 bias = d->target_bias_level;
1866 list_for_each_entry(d, &card->dapm_list, list)
1867 if (!d->idle_bias_off)
1868 d->target_bias_level = bias;
1870 trace_snd_soc_dapm_walk_done(card);
1872 /* Run all the bias changes in parallel */
1873 list_for_each_entry(d, &card->dapm_list, list)
1874 async_schedule_domain(dapm_pre_sequence_async, d,
1876 async_synchronize_full_domain(&async_domain);
1878 list_for_each_entry(w, &down_list, power_list) {
1879 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1882 list_for_each_entry(w, &up_list, power_list) {
1883 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1886 /* Power down widgets first; try to avoid amplifying pops. */
1887 dapm_seq_run(card, &down_list, event, false);
1889 dapm_widget_update(card);
1892 dapm_seq_run(card, &up_list, event, true);
1894 /* Run all the bias changes in parallel */
1895 list_for_each_entry(d, &card->dapm_list, list)
1896 async_schedule_domain(dapm_post_sequence_async, d,
1898 async_synchronize_full_domain(&async_domain);
1900 /* do we need to notify any clients that DAPM event is complete */
1901 list_for_each_entry(d, &card->dapm_list, list) {
1902 if (d->stream_event)
1903 d->stream_event(d, event);
1906 pop_dbg(card->dev, card->pop_time,
1907 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1908 pop_wait(card->pop_time);
1910 trace_snd_soc_dapm_done(card);
1915 #ifdef CONFIG_DEBUG_FS
1916 static ssize_t dapm_widget_power_read_file(struct file *file,
1917 char __user *user_buf,
1918 size_t count, loff_t *ppos)
1920 struct snd_soc_dapm_widget *w = file->private_data;
1924 struct snd_soc_dapm_path *p = NULL;
1926 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1930 in = is_connected_input_ep(w, NULL);
1931 dapm_clear_walk_input(w->dapm, &w->sources);
1932 out = is_connected_output_ep(w, NULL);
1933 dapm_clear_walk_output(w->dapm, &w->sinks);
1935 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1936 w->name, w->power ? "On" : "Off",
1937 w->force ? " (forced)" : "", in, out);
1940 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1941 " - R%d(0x%x) mask 0x%x",
1942 w->reg, w->reg, w->mask << w->shift);
1944 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1947 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1949 w->active ? "active" : "inactive");
1951 list_for_each_entry(p, &w->sources, list_sink) {
1952 if (p->connected && !p->connected(w, p->sink))
1956 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1957 " in \"%s\" \"%s\"\n",
1958 p->name ? p->name : "static",
1961 list_for_each_entry(p, &w->sinks, list_source) {
1962 if (p->connected && !p->connected(w, p->sink))
1966 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1967 " out \"%s\" \"%s\"\n",
1968 p->name ? p->name : "static",
1972 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1978 static const struct file_operations dapm_widget_power_fops = {
1979 .open = simple_open,
1980 .read = dapm_widget_power_read_file,
1981 .llseek = default_llseek,
1984 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1985 size_t count, loff_t *ppos)
1987 struct snd_soc_dapm_context *dapm = file->private_data;
1990 switch (dapm->bias_level) {
1991 case SND_SOC_BIAS_ON:
1994 case SND_SOC_BIAS_PREPARE:
1995 level = "Prepare\n";
1997 case SND_SOC_BIAS_STANDBY:
1998 level = "Standby\n";
2000 case SND_SOC_BIAS_OFF:
2005 level = "Unknown\n";
2009 return simple_read_from_buffer(user_buf, count, ppos, level,
2013 static const struct file_operations dapm_bias_fops = {
2014 .open = simple_open,
2015 .read = dapm_bias_read_file,
2016 .llseek = default_llseek,
2019 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2020 struct dentry *parent)
2024 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2026 if (!dapm->debugfs_dapm) {
2028 "ASoC: Failed to create DAPM debugfs directory\n");
2032 d = debugfs_create_file("bias_level", 0444,
2033 dapm->debugfs_dapm, dapm,
2037 "ASoC: Failed to create bias level debugfs file\n");
2040 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2042 struct snd_soc_dapm_context *dapm = w->dapm;
2045 if (!dapm->debugfs_dapm || !w->name)
2048 d = debugfs_create_file(w->name, 0444,
2049 dapm->debugfs_dapm, w,
2050 &dapm_widget_power_fops);
2052 dev_warn(w->dapm->dev,
2053 "ASoC: Failed to create %s debugfs file\n",
2057 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2059 debugfs_remove_recursive(dapm->debugfs_dapm);
2063 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2064 struct dentry *parent)
2068 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2072 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2078 /* test and update the power status of a mux widget */
2079 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2080 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2082 struct snd_soc_dapm_path *path;
2085 /* find dapm widget path assoc with kcontrol */
2086 dapm_kcontrol_for_each_path(path, kcontrol) {
2087 if (!path->name || !e->texts[mux])
2091 /* we now need to match the string in the enum to the path */
2092 if (!(strcmp(path->name, e->texts[mux]))) {
2093 path->connect = 1; /* new connection */
2094 dapm_mark_dirty(path->source, "mux connection");
2097 dapm_mark_dirty(path->source,
2098 "mux disconnection");
2099 path->connect = 0; /* old connection must be powered down */
2101 dapm_mark_dirty(path->sink, "mux change");
2105 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2110 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2111 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2112 struct snd_soc_dapm_update *update)
2114 struct snd_soc_card *card = dapm->card;
2117 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2118 card->update = update;
2119 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2120 card->update = NULL;
2121 mutex_unlock(&card->dapm_mutex);
2123 soc_dpcm_runtime_update(card);
2126 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2128 /* test and update the power status of a mixer or switch widget */
2129 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2130 struct snd_kcontrol *kcontrol, int connect)
2132 struct snd_soc_dapm_path *path;
2135 /* find dapm widget path assoc with kcontrol */
2136 dapm_kcontrol_for_each_path(path, kcontrol) {
2138 path->connect = connect;
2139 dapm_mark_dirty(path->source, "mixer connection");
2140 dapm_mark_dirty(path->sink, "mixer update");
2144 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2149 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2150 struct snd_kcontrol *kcontrol, int connect,
2151 struct snd_soc_dapm_update *update)
2153 struct snd_soc_card *card = dapm->card;
2156 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2157 card->update = update;
2158 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2159 card->update = NULL;
2160 mutex_unlock(&card->dapm_mutex);
2162 soc_dpcm_runtime_update(card);
2165 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2167 /* show dapm widget status in sys fs */
2168 static ssize_t dapm_widget_show(struct device *dev,
2169 struct device_attribute *attr, char *buf)
2171 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2172 struct snd_soc_codec *codec =rtd->codec;
2173 struct snd_soc_dapm_widget *w;
2175 char *state = "not set";
2177 list_for_each_entry(w, &codec->card->widgets, list) {
2178 if (w->dapm != &codec->dapm)
2181 /* only display widgets that burnm power */
2183 case snd_soc_dapm_hp:
2184 case snd_soc_dapm_mic:
2185 case snd_soc_dapm_spk:
2186 case snd_soc_dapm_line:
2187 case snd_soc_dapm_micbias:
2188 case snd_soc_dapm_dac:
2189 case snd_soc_dapm_adc:
2190 case snd_soc_dapm_pga:
2191 case snd_soc_dapm_out_drv:
2192 case snd_soc_dapm_mixer:
2193 case snd_soc_dapm_mixer_named_ctl:
2194 case snd_soc_dapm_supply:
2195 case snd_soc_dapm_regulator_supply:
2196 case snd_soc_dapm_clock_supply:
2198 count += sprintf(buf + count, "%s: %s\n",
2199 w->name, w->power ? "On":"Off");
2206 switch (codec->dapm.bias_level) {
2207 case SND_SOC_BIAS_ON:
2210 case SND_SOC_BIAS_PREPARE:
2213 case SND_SOC_BIAS_STANDBY:
2216 case SND_SOC_BIAS_OFF:
2220 count += sprintf(buf + count, "PM State: %s\n", state);
2225 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2227 int snd_soc_dapm_sys_add(struct device *dev)
2229 return device_create_file(dev, &dev_attr_dapm_widget);
2232 static void snd_soc_dapm_sys_remove(struct device *dev)
2234 device_remove_file(dev, &dev_attr_dapm_widget);
2237 static void dapm_free_path(struct snd_soc_dapm_path *path)
2239 list_del(&path->list_sink);
2240 list_del(&path->list_source);
2241 list_del(&path->list_kcontrol);
2242 list_del(&path->list);
2246 /* free all dapm widgets and resources */
2247 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2249 struct snd_soc_dapm_widget *w, *next_w;
2250 struct snd_soc_dapm_path *p, *next_p;
2252 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2253 if (w->dapm != dapm)
2257 * remove source and sink paths associated to this widget.
2258 * While removing the path, remove reference to it from both
2259 * source and sink widgets so that path is removed only once.
2261 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2264 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2267 kfree(w->kcontrols);
2273 static struct snd_soc_dapm_widget *dapm_find_widget(
2274 struct snd_soc_dapm_context *dapm, const char *pin,
2275 bool search_other_contexts)
2277 struct snd_soc_dapm_widget *w;
2278 struct snd_soc_dapm_widget *fallback = NULL;
2280 list_for_each_entry(w, &dapm->card->widgets, list) {
2281 if (!strcmp(w->name, pin)) {
2282 if (w->dapm == dapm)
2289 if (search_other_contexts)
2295 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2296 const char *pin, int status)
2298 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2301 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2305 if (w->connected != status)
2306 dapm_mark_dirty(w, "pin configuration");
2308 w->connected = status;
2316 * snd_soc_dapm_sync - scan and power dapm paths
2317 * @dapm: DAPM context
2319 * Walks all dapm audio paths and powers widgets according to their
2320 * stream or path usage.
2322 * Returns 0 for success.
2324 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2329 * Suppress early reports (eg, jacks syncing their state) to avoid
2330 * silly DAPM runs during card startup.
2332 if (!dapm->card || !dapm->card->instantiated)
2335 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2336 ret = dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2337 mutex_unlock(&dapm->card->dapm_mutex);
2340 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2342 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2343 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2344 const char *control,
2345 int (*connected)(struct snd_soc_dapm_widget *source,
2346 struct snd_soc_dapm_widget *sink))
2348 struct snd_soc_dapm_path *path;
2351 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2355 path->source = wsource;
2357 path->connected = connected;
2358 INIT_LIST_HEAD(&path->list);
2359 INIT_LIST_HEAD(&path->list_kcontrol);
2360 INIT_LIST_HEAD(&path->list_source);
2361 INIT_LIST_HEAD(&path->list_sink);
2363 /* check for external widgets */
2364 if (wsink->id == snd_soc_dapm_input) {
2365 if (wsource->id == snd_soc_dapm_micbias ||
2366 wsource->id == snd_soc_dapm_mic ||
2367 wsource->id == snd_soc_dapm_line ||
2368 wsource->id == snd_soc_dapm_output)
2371 if (wsource->id == snd_soc_dapm_output) {
2372 if (wsink->id == snd_soc_dapm_spk ||
2373 wsink->id == snd_soc_dapm_hp ||
2374 wsink->id == snd_soc_dapm_line ||
2375 wsink->id == snd_soc_dapm_input)
2379 dapm_mark_dirty(wsource, "Route added");
2380 dapm_mark_dirty(wsink, "Route added");
2382 /* connect static paths */
2383 if (control == NULL) {
2384 list_add(&path->list, &dapm->card->paths);
2385 list_add(&path->list_sink, &wsink->sources);
2386 list_add(&path->list_source, &wsource->sinks);
2391 /* connect dynamic paths */
2392 switch (wsink->id) {
2393 case snd_soc_dapm_adc:
2394 case snd_soc_dapm_dac:
2395 case snd_soc_dapm_pga:
2396 case snd_soc_dapm_out_drv:
2397 case snd_soc_dapm_input:
2398 case snd_soc_dapm_output:
2399 case snd_soc_dapm_siggen:
2400 case snd_soc_dapm_micbias:
2401 case snd_soc_dapm_vmid:
2402 case snd_soc_dapm_pre:
2403 case snd_soc_dapm_post:
2404 case snd_soc_dapm_supply:
2405 case snd_soc_dapm_regulator_supply:
2406 case snd_soc_dapm_clock_supply:
2407 case snd_soc_dapm_aif_in:
2408 case snd_soc_dapm_aif_out:
2409 case snd_soc_dapm_dai_in:
2410 case snd_soc_dapm_dai_out:
2411 case snd_soc_dapm_dai_link:
2412 case snd_soc_dapm_kcontrol:
2413 list_add(&path->list, &dapm->card->paths);
2414 list_add(&path->list_sink, &wsink->sources);
2415 list_add(&path->list_source, &wsource->sinks);
2418 case snd_soc_dapm_mux:
2419 case snd_soc_dapm_virt_mux:
2420 case snd_soc_dapm_value_mux:
2421 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2422 &wsink->kcontrol_news[0]);
2426 case snd_soc_dapm_switch:
2427 case snd_soc_dapm_mixer:
2428 case snd_soc_dapm_mixer_named_ctl:
2429 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2433 case snd_soc_dapm_hp:
2434 case snd_soc_dapm_mic:
2435 case snd_soc_dapm_line:
2436 case snd_soc_dapm_spk:
2437 list_add(&path->list, &dapm->card->paths);
2438 list_add(&path->list_sink, &wsink->sources);
2439 list_add(&path->list_source, &wsource->sinks);
2450 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2451 const struct snd_soc_dapm_route *route)
2453 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2454 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2457 char prefixed_sink[80];
2458 char prefixed_source[80];
2461 if (dapm->codec && dapm->codec->name_prefix) {
2462 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2463 dapm->codec->name_prefix, route->sink);
2464 sink = prefixed_sink;
2465 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2466 dapm->codec->name_prefix, route->source);
2467 source = prefixed_source;
2470 source = route->source;
2474 * find src and dest widgets over all widgets but favor a widget from
2475 * current DAPM context
2477 list_for_each_entry(w, &dapm->card->widgets, list) {
2478 if (!wsink && !(strcmp(w->name, sink))) {
2480 if (w->dapm == dapm)
2484 if (!wsource && !(strcmp(w->name, source))) {
2486 if (w->dapm == dapm)
2490 /* use widget from another DAPM context if not found from this */
2496 if (wsource == NULL) {
2497 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2501 if (wsink == NULL) {
2502 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2507 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2514 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2515 source, route->control, sink);
2519 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2520 const struct snd_soc_dapm_route *route)
2522 struct snd_soc_dapm_path *path, *p;
2525 char prefixed_sink[80];
2526 char prefixed_source[80];
2528 if (route->control) {
2530 "ASoC: Removal of routes with controls not supported\n");
2534 if (dapm->codec && dapm->codec->name_prefix) {
2535 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2536 dapm->codec->name_prefix, route->sink);
2537 sink = prefixed_sink;
2538 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2539 dapm->codec->name_prefix, route->source);
2540 source = prefixed_source;
2543 source = route->source;
2547 list_for_each_entry(p, &dapm->card->paths, list) {
2548 if (strcmp(p->source->name, source) != 0)
2550 if (strcmp(p->sink->name, sink) != 0)
2557 dapm_mark_dirty(path->source, "Route removed");
2558 dapm_mark_dirty(path->sink, "Route removed");
2560 dapm_free_path(path);
2562 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2570 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2571 * @dapm: DAPM context
2572 * @route: audio routes
2573 * @num: number of routes
2575 * Connects 2 dapm widgets together via a named audio path. The sink is
2576 * the widget receiving the audio signal, whilst the source is the sender
2577 * of the audio signal.
2579 * Returns 0 for success else error. On error all resources can be freed
2580 * with a call to snd_soc_card_free().
2582 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2583 const struct snd_soc_dapm_route *route, int num)
2587 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2588 for (i = 0; i < num; i++) {
2589 r = snd_soc_dapm_add_route(dapm, route);
2591 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2593 route->control ? route->control : "direct",
2599 mutex_unlock(&dapm->card->dapm_mutex);
2603 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2606 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2607 * @dapm: DAPM context
2608 * @route: audio routes
2609 * @num: number of routes
2611 * Removes routes from the DAPM context.
2613 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2614 const struct snd_soc_dapm_route *route, int num)
2618 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2619 for (i = 0; i < num; i++) {
2620 snd_soc_dapm_del_route(dapm, route);
2623 mutex_unlock(&dapm->card->dapm_mutex);
2627 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2629 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2630 const struct snd_soc_dapm_route *route)
2632 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2635 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2638 struct snd_soc_dapm_path *path;
2642 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2648 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2653 if (route->control || route->connected)
2654 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2655 route->source, route->sink);
2657 list_for_each_entry(path, &source->sinks, list_source) {
2658 if (path->sink == sink) {
2665 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2666 route->source, route->sink);
2668 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2669 count, route->source, route->sink);
2675 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2676 * @dapm: DAPM context
2677 * @route: audio routes
2678 * @num: number of routes
2680 * Mark existing routes matching those specified in the passed array
2681 * as being weak, meaning that they are ignored for the purpose of
2682 * power decisions. The main intended use case is for sidetone paths
2683 * which couple audio between other independent paths if they are both
2684 * active in order to make the combination work better at the user
2685 * level but which aren't intended to be "used".
2687 * Note that CODEC drivers should not use this as sidetone type paths
2688 * can frequently also be used as bypass paths.
2690 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2691 const struct snd_soc_dapm_route *route, int num)
2696 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2697 for (i = 0; i < num; i++) {
2698 err = snd_soc_dapm_weak_route(dapm, route);
2703 mutex_unlock(&dapm->card->dapm_mutex);
2707 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2710 * snd_soc_dapm_new_widgets - add new dapm widgets
2711 * @dapm: DAPM context
2713 * Checks the codec for any new dapm widgets and creates them if found.
2715 * Returns 0 for success.
2717 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2719 struct snd_soc_dapm_widget *w;
2722 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2724 list_for_each_entry(w, &card->widgets, list)
2729 if (w->num_kcontrols) {
2730 w->kcontrols = kzalloc(w->num_kcontrols *
2731 sizeof(struct snd_kcontrol *),
2733 if (!w->kcontrols) {
2734 mutex_unlock(&card->dapm_mutex);
2740 case snd_soc_dapm_switch:
2741 case snd_soc_dapm_mixer:
2742 case snd_soc_dapm_mixer_named_ctl:
2745 case snd_soc_dapm_mux:
2746 case snd_soc_dapm_virt_mux:
2747 case snd_soc_dapm_value_mux:
2750 case snd_soc_dapm_pga:
2751 case snd_soc_dapm_out_drv:
2758 /* Read the initial power state from the device */
2760 val = soc_widget_read(w, w->reg) >> w->shift;
2762 if (val == w->on_val)
2768 dapm_mark_dirty(w, "new widget");
2769 dapm_debugfs_add_widget(w);
2772 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2773 mutex_unlock(&card->dapm_mutex);
2776 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2779 * snd_soc_dapm_get_volsw - dapm mixer get callback
2780 * @kcontrol: mixer control
2781 * @ucontrol: control element information
2783 * Callback to get the value of a dapm mixer control.
2785 * Returns 0 for success.
2787 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2788 struct snd_ctl_elem_value *ucontrol)
2790 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2791 struct snd_soc_card *card = codec->card;
2792 struct soc_mixer_control *mc =
2793 (struct soc_mixer_control *)kcontrol->private_value;
2794 unsigned int reg = mc->reg;
2795 unsigned int shift = mc->shift;
2797 unsigned int mask = (1 << fls(max)) - 1;
2798 unsigned int invert = mc->invert;
2801 if (snd_soc_volsw_is_stereo(mc))
2802 dev_warn(codec->dapm.dev,
2803 "ASoC: Control '%s' is stereo, which is not supported\n",
2806 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2807 if (dapm_kcontrol_is_powered(kcontrol))
2808 val = (snd_soc_read(codec, reg) >> shift) & mask;
2810 val = dapm_kcontrol_get_value(kcontrol);
2811 mutex_unlock(&card->dapm_mutex);
2814 ucontrol->value.integer.value[0] = max - val;
2816 ucontrol->value.integer.value[0] = val;
2820 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2823 * snd_soc_dapm_put_volsw - dapm mixer set callback
2824 * @kcontrol: mixer control
2825 * @ucontrol: control element information
2827 * Callback to set the value of a dapm mixer control.
2829 * Returns 0 for success.
2831 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2832 struct snd_ctl_elem_value *ucontrol)
2834 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2835 struct snd_soc_card *card = codec->card;
2836 struct soc_mixer_control *mc =
2837 (struct soc_mixer_control *)kcontrol->private_value;
2838 unsigned int reg = mc->reg;
2839 unsigned int shift = mc->shift;
2841 unsigned int mask = (1 << fls(max)) - 1;
2842 unsigned int invert = mc->invert;
2844 int connect, change;
2845 struct snd_soc_dapm_update update;
2847 if (snd_soc_volsw_is_stereo(mc))
2848 dev_warn(codec->dapm.dev,
2849 "ASoC: Control '%s' is stereo, which is not supported\n",
2852 val = (ucontrol->value.integer.value[0] & mask);
2858 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2860 dapm_kcontrol_set_value(kcontrol, val);
2862 mask = mask << shift;
2865 change = snd_soc_test_bits(codec, reg, mask, val);
2867 update.kcontrol = kcontrol;
2872 card->update = &update;
2874 soc_dapm_mixer_update_power(card, kcontrol, connect);
2876 card->update = NULL;
2879 mutex_unlock(&card->dapm_mutex);
2882 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2885 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2886 * @kcontrol: mixer control
2887 * @ucontrol: control element information
2889 * Callback to get the value of a dapm enumerated double mixer control.
2891 * Returns 0 for success.
2893 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2894 struct snd_ctl_elem_value *ucontrol)
2896 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2897 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2900 val = snd_soc_read(codec, e->reg);
2901 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2902 if (e->shift_l != e->shift_r)
2903 ucontrol->value.enumerated.item[1] =
2904 (val >> e->shift_r) & e->mask;
2908 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2911 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2912 * @kcontrol: mixer control
2913 * @ucontrol: control element information
2915 * Callback to set the value of a dapm enumerated double mixer control.
2917 * Returns 0 for success.
2919 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2920 struct snd_ctl_elem_value *ucontrol)
2922 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2923 struct snd_soc_card *card = codec->card;
2924 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2925 unsigned int val, mux, change;
2927 struct snd_soc_dapm_update update;
2929 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2931 mux = ucontrol->value.enumerated.item[0];
2932 val = mux << e->shift_l;
2933 mask = e->mask << e->shift_l;
2934 if (e->shift_l != e->shift_r) {
2935 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2937 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2938 mask |= e->mask << e->shift_r;
2941 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2943 change = snd_soc_test_bits(codec, e->reg, mask, val);
2945 update.kcontrol = kcontrol;
2946 update.reg = e->reg;
2949 card->update = &update;
2951 soc_dapm_mux_update_power(card, kcontrol, mux, e);
2953 card->update = NULL;
2956 mutex_unlock(&card->dapm_mutex);
2959 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2962 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2963 * @kcontrol: mixer control
2964 * @ucontrol: control element information
2966 * Returns 0 for success.
2968 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2969 struct snd_ctl_elem_value *ucontrol)
2971 ucontrol->value.enumerated.item[0] = dapm_kcontrol_get_value(kcontrol);
2974 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2977 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2978 * @kcontrol: mixer control
2979 * @ucontrol: control element information
2981 * Returns 0 for success.
2983 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2984 struct snd_ctl_elem_value *ucontrol)
2986 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2987 struct snd_soc_card *card = codec->card;
2989 struct soc_enum *e =
2990 (struct soc_enum *)kcontrol->private_value;
2993 if (ucontrol->value.enumerated.item[0] >= e->max)
2996 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2998 value = ucontrol->value.enumerated.item[0];
2999 change = dapm_kcontrol_set_value(kcontrol, value);
3001 soc_dapm_mux_update_power(card, kcontrol, value, e);
3003 mutex_unlock(&card->dapm_mutex);
3006 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
3009 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
3011 * @kcontrol: mixer control
3012 * @ucontrol: control element information
3014 * Callback to get the value of a dapm semi enumerated double mixer control.
3016 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3017 * used for handling bitfield coded enumeration for example.
3019 * Returns 0 for success.
3021 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
3022 struct snd_ctl_elem_value *ucontrol)
3024 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
3025 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3026 unsigned int reg_val, val, mux;
3028 reg_val = snd_soc_read(codec, e->reg);
3029 val = (reg_val >> e->shift_l) & e->mask;
3030 for (mux = 0; mux < e->max; mux++) {
3031 if (val == e->values[mux])
3034 ucontrol->value.enumerated.item[0] = mux;
3035 if (e->shift_l != e->shift_r) {
3036 val = (reg_val >> e->shift_r) & e->mask;
3037 for (mux = 0; mux < e->max; mux++) {
3038 if (val == e->values[mux])
3041 ucontrol->value.enumerated.item[1] = mux;
3046 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
3049 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
3051 * @kcontrol: mixer control
3052 * @ucontrol: control element information
3054 * Callback to set the value of a dapm semi enumerated double mixer control.
3056 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3057 * used for handling bitfield coded enumeration for example.
3059 * Returns 0 for success.
3061 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
3062 struct snd_ctl_elem_value *ucontrol)
3064 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
3065 struct snd_soc_card *card = codec->card;
3066 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3067 unsigned int val, mux, change;
3069 struct snd_soc_dapm_update update;
3071 if (ucontrol->value.enumerated.item[0] > e->max - 1)
3073 mux = ucontrol->value.enumerated.item[0];
3074 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
3075 mask = e->mask << e->shift_l;
3076 if (e->shift_l != e->shift_r) {
3077 if (ucontrol->value.enumerated.item[1] > e->max - 1)
3079 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
3080 mask |= e->mask << e->shift_r;
3083 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3085 change = snd_soc_test_bits(codec, e->reg, mask, val);
3087 update.kcontrol = kcontrol;
3088 update.reg = e->reg;
3091 card->update = &update;
3093 soc_dapm_mux_update_power(card, kcontrol, mux, e);
3095 card->update = NULL;
3098 mutex_unlock(&card->dapm_mutex);
3101 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
3104 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3106 * @kcontrol: mixer control
3107 * @uinfo: control element information
3109 * Callback to provide information about a pin switch control.
3111 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3112 struct snd_ctl_elem_info *uinfo)
3114 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3116 uinfo->value.integer.min = 0;
3117 uinfo->value.integer.max = 1;
3121 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3124 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3126 * @kcontrol: mixer control
3129 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3130 struct snd_ctl_elem_value *ucontrol)
3132 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3133 const char *pin = (const char *)kcontrol->private_value;
3135 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3137 ucontrol->value.integer.value[0] =
3138 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3140 mutex_unlock(&card->dapm_mutex);
3144 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3147 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3149 * @kcontrol: mixer control
3152 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3153 struct snd_ctl_elem_value *ucontrol)
3155 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3156 const char *pin = (const char *)kcontrol->private_value;
3158 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3160 if (ucontrol->value.integer.value[0])
3161 snd_soc_dapm_enable_pin(&card->dapm, pin);
3163 snd_soc_dapm_disable_pin(&card->dapm, pin);
3165 mutex_unlock(&card->dapm_mutex);
3167 snd_soc_dapm_sync(&card->dapm);
3170 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3172 static struct snd_soc_dapm_widget *
3173 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3174 const struct snd_soc_dapm_widget *widget)
3176 struct snd_soc_dapm_widget *w;
3179 if ((w = dapm_cnew_widget(widget)) == NULL)
3183 case snd_soc_dapm_regulator_supply:
3184 w->regulator = devm_regulator_get(dapm->dev, w->name);
3185 if (IS_ERR(w->regulator)) {
3186 ret = PTR_ERR(w->regulator);
3187 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3192 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3193 ret = regulator_allow_bypass(w->regulator, true);
3195 dev_warn(w->dapm->dev,
3196 "ASoC: Failed to unbypass %s: %d\n",
3200 case snd_soc_dapm_clock_supply:
3201 #ifdef CONFIG_CLKDEV_LOOKUP
3202 w->clk = devm_clk_get(dapm->dev, w->name);
3203 if (IS_ERR(w->clk)) {
3204 ret = PTR_ERR(w->clk);
3205 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3217 if (dapm->codec && dapm->codec->name_prefix)
3218 w->name = kasprintf(GFP_KERNEL, "%s %s",
3219 dapm->codec->name_prefix, widget->name);
3221 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3223 if (w->name == NULL) {
3229 case snd_soc_dapm_switch:
3230 case snd_soc_dapm_mixer:
3231 case snd_soc_dapm_mixer_named_ctl:
3232 w->power_check = dapm_generic_check_power;
3234 case snd_soc_dapm_mux:
3235 case snd_soc_dapm_virt_mux:
3236 case snd_soc_dapm_value_mux:
3237 w->power_check = dapm_generic_check_power;
3239 case snd_soc_dapm_dai_out:
3240 w->power_check = dapm_adc_check_power;
3242 case snd_soc_dapm_dai_in:
3243 w->power_check = dapm_dac_check_power;
3245 case snd_soc_dapm_adc:
3246 case snd_soc_dapm_aif_out:
3247 case snd_soc_dapm_dac:
3248 case snd_soc_dapm_aif_in:
3249 case snd_soc_dapm_pga:
3250 case snd_soc_dapm_out_drv:
3251 case snd_soc_dapm_input:
3252 case snd_soc_dapm_output:
3253 case snd_soc_dapm_micbias:
3254 case snd_soc_dapm_spk:
3255 case snd_soc_dapm_hp:
3256 case snd_soc_dapm_mic:
3257 case snd_soc_dapm_line:
3258 case snd_soc_dapm_dai_link:
3259 w->power_check = dapm_generic_check_power;
3261 case snd_soc_dapm_supply:
3262 case snd_soc_dapm_regulator_supply:
3263 case snd_soc_dapm_clock_supply:
3264 case snd_soc_dapm_kcontrol:
3265 w->power_check = dapm_supply_check_power;
3268 w->power_check = dapm_always_on_check_power;
3273 w->codec = dapm->codec;
3274 w->platform = dapm->platform;
3275 INIT_LIST_HEAD(&w->sources);
3276 INIT_LIST_HEAD(&w->sinks);
3277 INIT_LIST_HEAD(&w->list);
3278 INIT_LIST_HEAD(&w->dirty);
3279 list_add(&w->list, &dapm->card->widgets);
3281 /* machine layer set ups unconnected pins and insertions */
3287 * snd_soc_dapm_new_controls - create new dapm controls
3288 * @dapm: DAPM context
3289 * @widget: widget array
3290 * @num: number of widgets
3292 * Creates new DAPM controls based upon the templates.
3294 * Returns 0 for success else error.
3296 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3297 const struct snd_soc_dapm_widget *widget,
3300 struct snd_soc_dapm_widget *w;
3304 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3305 for (i = 0; i < num; i++) {
3306 w = snd_soc_dapm_new_control(dapm, widget);
3309 "ASoC: Failed to create DAPM control %s\n",
3316 mutex_unlock(&dapm->card->dapm_mutex);
3319 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3321 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3322 struct snd_kcontrol *kcontrol, int event)
3324 struct snd_soc_dapm_path *source_p, *sink_p;
3325 struct snd_soc_dai *source, *sink;
3326 const struct snd_soc_pcm_stream *config = w->params;
3327 struct snd_pcm_substream substream;
3328 struct snd_pcm_hw_params *params = NULL;
3333 BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks));
3335 /* We only support a single source and sink, pick the first */
3336 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3338 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3341 BUG_ON(!source_p || !sink_p);
3342 BUG_ON(!sink_p->source || !source_p->sink);
3343 BUG_ON(!source_p->source || !sink_p->sink);
3345 source = source_p->source->priv;
3346 sink = sink_p->sink->priv;
3348 /* Be a little careful as we don't want to overflow the mask array */
3349 if (config->formats) {
3350 fmt = ffs(config->formats) - 1;
3352 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3357 /* Currently very limited parameter selection */
3358 params = kzalloc(sizeof(*params), GFP_KERNEL);
3363 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3365 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3367 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3370 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3371 = config->channels_min;
3372 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3373 = config->channels_max;
3375 memset(&substream, 0, sizeof(substream));
3378 case SND_SOC_DAPM_PRE_PMU:
3379 if (source->driver->ops && source->driver->ops->hw_params) {
3380 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3381 ret = source->driver->ops->hw_params(&substream,
3384 dev_err(source->dev,
3385 "ASoC: hw_params() failed: %d\n", ret);
3390 if (sink->driver->ops && sink->driver->ops->hw_params) {
3391 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3392 ret = sink->driver->ops->hw_params(&substream, params,
3396 "ASoC: hw_params() failed: %d\n", ret);
3402 case SND_SOC_DAPM_POST_PMU:
3403 ret = snd_soc_dai_digital_mute(sink, 0,
3404 SNDRV_PCM_STREAM_PLAYBACK);
3405 if (ret != 0 && ret != -ENOTSUPP)
3406 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3410 case SND_SOC_DAPM_PRE_PMD:
3411 ret = snd_soc_dai_digital_mute(sink, 1,
3412 SNDRV_PCM_STREAM_PLAYBACK);
3413 if (ret != 0 && ret != -ENOTSUPP)
3414 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3428 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3429 const struct snd_soc_pcm_stream *params,
3430 struct snd_soc_dapm_widget *source,
3431 struct snd_soc_dapm_widget *sink)
3433 struct snd_soc_dapm_route routes[2];
3434 struct snd_soc_dapm_widget template;
3435 struct snd_soc_dapm_widget *w;
3439 len = strlen(source->name) + strlen(sink->name) + 2;
3440 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3443 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3445 memset(&template, 0, sizeof(template));
3446 template.reg = SND_SOC_NOPM;
3447 template.id = snd_soc_dapm_dai_link;
3448 template.name = link_name;
3449 template.event = snd_soc_dai_link_event;
3450 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3451 SND_SOC_DAPM_PRE_PMD;
3453 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3455 w = snd_soc_dapm_new_control(&card->dapm, &template);
3457 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3464 memset(&routes, 0, sizeof(routes));
3466 routes[0].source = source->name;
3467 routes[0].sink = link_name;
3468 routes[1].source = link_name;
3469 routes[1].sink = sink->name;
3471 return snd_soc_dapm_add_routes(&card->dapm, routes,
3472 ARRAY_SIZE(routes));
3475 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3476 struct snd_soc_dai *dai)
3478 struct snd_soc_dapm_widget template;
3479 struct snd_soc_dapm_widget *w;
3481 WARN_ON(dapm->dev != dai->dev);
3483 memset(&template, 0, sizeof(template));
3484 template.reg = SND_SOC_NOPM;
3486 if (dai->driver->playback.stream_name) {
3487 template.id = snd_soc_dapm_dai_in;
3488 template.name = dai->driver->playback.stream_name;
3489 template.sname = dai->driver->playback.stream_name;
3491 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3494 w = snd_soc_dapm_new_control(dapm, &template);
3496 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3497 dai->driver->playback.stream_name);
3501 dai->playback_widget = w;
3504 if (dai->driver->capture.stream_name) {
3505 template.id = snd_soc_dapm_dai_out;
3506 template.name = dai->driver->capture.stream_name;
3507 template.sname = dai->driver->capture.stream_name;
3509 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3512 w = snd_soc_dapm_new_control(dapm, &template);
3514 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3515 dai->driver->capture.stream_name);
3519 dai->capture_widget = w;
3525 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3527 struct snd_soc_dapm_widget *dai_w, *w;
3528 struct snd_soc_dai *dai;
3530 /* For each DAI widget... */
3531 list_for_each_entry(dai_w, &card->widgets, list) {
3532 switch (dai_w->id) {
3533 case snd_soc_dapm_dai_in:
3534 case snd_soc_dapm_dai_out:
3542 /* ...find all widgets with the same stream and link them */
3543 list_for_each_entry(w, &card->widgets, list) {
3544 if (w->dapm != dai_w->dapm)
3548 case snd_soc_dapm_dai_in:
3549 case snd_soc_dapm_dai_out:
3555 if (!w->sname || !strstr(w->sname, dai_w->name))
3558 if (dai->driver->playback.stream_name &&
3560 dai->driver->playback.stream_name)) {
3561 dev_dbg(dai->dev, "%s -> %s\n",
3562 dai->playback_widget->name, w->name);
3564 snd_soc_dapm_add_path(w->dapm,
3565 dai->playback_widget, w, NULL, NULL);
3568 if (dai->driver->capture.stream_name &&
3570 dai->driver->capture.stream_name)) {
3571 dev_dbg(dai->dev, "%s -> %s\n",
3572 w->name, dai->capture_widget->name);
3574 snd_soc_dapm_add_path(w->dapm, w,
3575 dai->capture_widget, NULL, NULL);
3583 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3587 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3588 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3589 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3591 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3592 w_cpu = cpu_dai->playback_widget;
3593 w_codec = codec_dai->playback_widget;
3595 w_cpu = cpu_dai->capture_widget;
3596 w_codec = codec_dai->capture_widget;
3601 dapm_mark_dirty(w_cpu, "stream event");
3604 case SND_SOC_DAPM_STREAM_START:
3607 case SND_SOC_DAPM_STREAM_STOP:
3610 case SND_SOC_DAPM_STREAM_SUSPEND:
3611 case SND_SOC_DAPM_STREAM_RESUME:
3612 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3613 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3620 dapm_mark_dirty(w_codec, "stream event");
3623 case SND_SOC_DAPM_STREAM_START:
3624 w_codec->active = 1;
3626 case SND_SOC_DAPM_STREAM_STOP:
3627 w_codec->active = 0;
3629 case SND_SOC_DAPM_STREAM_SUSPEND:
3630 case SND_SOC_DAPM_STREAM_RESUME:
3631 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3632 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3637 dapm_power_widgets(rtd->card, event);
3641 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3642 * @rtd: PCM runtime data
3643 * @stream: stream name
3644 * @event: stream event
3646 * Sends a stream event to the dapm core. The core then makes any
3647 * necessary widget power changes.
3649 * Returns 0 for success else error.
3651 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3654 struct snd_soc_card *card = rtd->card;
3656 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3657 soc_dapm_stream_event(rtd, stream, event);
3658 mutex_unlock(&card->dapm_mutex);
3662 * snd_soc_dapm_enable_pin - enable pin.
3663 * @dapm: DAPM context
3666 * Enables input/output pin and its parents or children widgets iff there is
3667 * a valid audio route and active audio stream.
3668 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3669 * do any widget power switching.
3671 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3673 return snd_soc_dapm_set_pin(dapm, pin, 1);
3675 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3678 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3679 * @dapm: DAPM context
3682 * Enables input/output pin regardless of any other state. This is
3683 * intended for use with microphone bias supplies used in microphone
3686 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3687 * do any widget power switching.
3689 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3692 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3695 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3699 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3702 dapm_mark_dirty(w, "force enable");
3706 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3709 * snd_soc_dapm_disable_pin - disable pin.
3710 * @dapm: DAPM context
3713 * Disables input/output pin and its parents or children widgets.
3714 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3715 * do any widget power switching.
3717 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3720 return snd_soc_dapm_set_pin(dapm, pin, 0);
3722 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3725 * snd_soc_dapm_nc_pin - permanently disable pin.
3726 * @dapm: DAPM context
3729 * Marks the specified pin as being not connected, disabling it along
3730 * any parent or child widgets. At present this is identical to
3731 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3732 * additional things such as disabling controls which only affect
3733 * paths through the pin.
3735 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3736 * do any widget power switching.
3738 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3740 return snd_soc_dapm_set_pin(dapm, pin, 0);
3742 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3745 * snd_soc_dapm_get_pin_status - get audio pin status
3746 * @dapm: DAPM context
3747 * @pin: audio signal pin endpoint (or start point)
3749 * Get audio pin status - connected or disconnected.
3751 * Returns 1 for connected otherwise 0.
3753 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3756 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3759 return w->connected;
3763 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3766 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3767 * @dapm: DAPM context
3768 * @pin: audio signal pin endpoint (or start point)
3770 * Mark the given endpoint or pin as ignoring suspend. When the
3771 * system is disabled a path between two endpoints flagged as ignoring
3772 * suspend will not be disabled. The path must already be enabled via
3773 * normal means at suspend time, it will not be turned on if it was not
3776 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3779 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3782 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3786 w->ignore_suspend = 1;
3790 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3792 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3793 struct snd_soc_dapm_widget *w)
3795 struct snd_soc_dapm_path *p;
3797 list_for_each_entry(p, &card->paths, list) {
3798 if ((p->source == w) || (p->sink == w)) {
3800 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3801 p->source->name, p->source->id, p->source->dapm,
3802 p->sink->name, p->sink->id, p->sink->dapm);
3804 /* Connected to something other than the codec */
3805 if (p->source->dapm != p->sink->dapm)
3808 * Loopback connection from codec external pin to
3809 * codec external pin
3811 if (p->sink->id == snd_soc_dapm_input) {
3812 switch (p->source->id) {
3813 case snd_soc_dapm_output:
3814 case snd_soc_dapm_micbias:
3827 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3828 * @codec: The codec whose pins should be processed
3830 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3831 * which are unused. Pins are used if they are connected externally to the
3832 * codec, whether that be to some other device, or a loop-back connection to
3835 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3837 struct snd_soc_card *card = codec->card;
3838 struct snd_soc_dapm_context *dapm = &codec->dapm;
3839 struct snd_soc_dapm_widget *w;
3841 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3842 &card->dapm, &codec->dapm);
3844 list_for_each_entry(w, &card->widgets, list) {
3845 if (w->dapm != dapm)
3848 case snd_soc_dapm_input:
3849 case snd_soc_dapm_output:
3850 case snd_soc_dapm_micbias:
3851 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3853 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3855 "... Not in map; disabling\n");
3856 snd_soc_dapm_nc_pin(dapm, w->name);
3866 * snd_soc_dapm_free - free dapm resources
3867 * @dapm: DAPM context
3869 * Free all dapm widgets and resources.
3871 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3873 snd_soc_dapm_sys_remove(dapm->dev);
3874 dapm_debugfs_cleanup(dapm);
3875 dapm_free_widgets(dapm);
3876 list_del(&dapm->list);
3878 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3880 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
3882 struct snd_soc_card *card = dapm->card;
3883 struct snd_soc_dapm_widget *w;
3884 LIST_HEAD(down_list);
3887 mutex_lock(&card->dapm_mutex);
3889 list_for_each_entry(w, &dapm->card->widgets, list) {
3890 if (w->dapm != dapm)
3893 dapm_seq_insert(w, &down_list, false);
3899 /* If there were no widgets to power down we're already in
3903 if (dapm->bias_level == SND_SOC_BIAS_ON)
3904 snd_soc_dapm_set_bias_level(dapm,
3905 SND_SOC_BIAS_PREPARE);
3906 dapm_seq_run(card, &down_list, 0, false);
3907 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3908 snd_soc_dapm_set_bias_level(dapm,
3909 SND_SOC_BIAS_STANDBY);
3912 mutex_unlock(&card->dapm_mutex);
3916 * snd_soc_dapm_shutdown - callback for system shutdown
3918 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3920 struct snd_soc_codec *codec;
3922 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
3923 soc_dapm_shutdown_codec(&codec->dapm);
3924 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3925 snd_soc_dapm_set_bias_level(&codec->dapm,
3930 /* Module information */
3931 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3932 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3933 MODULE_LICENSE("GPL");