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));
56 struct snd_soc_dapm_widget *
57 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
58 const struct snd_soc_dapm_widget *widget);
60 struct snd_soc_dapm_widget *
61 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
62 const struct snd_soc_dapm_widget *widget);
64 /* dapm power sequences - make this per codec in the future */
65 static int dapm_up_seq[] = {
66 [snd_soc_dapm_pre] = 0,
67 [snd_soc_dapm_regulator_supply] = 1,
68 [snd_soc_dapm_clock_supply] = 1,
69 [snd_soc_dapm_supply] = 2,
70 [snd_soc_dapm_micbias] = 3,
71 [snd_soc_dapm_dai_link] = 2,
72 [snd_soc_dapm_dai_in] = 4,
73 [snd_soc_dapm_dai_out] = 4,
74 [snd_soc_dapm_aif_in] = 4,
75 [snd_soc_dapm_aif_out] = 4,
76 [snd_soc_dapm_mic] = 5,
77 [snd_soc_dapm_mux] = 6,
78 [snd_soc_dapm_demux] = 6,
79 [snd_soc_dapm_dac] = 7,
80 [snd_soc_dapm_switch] = 8,
81 [snd_soc_dapm_mixer] = 8,
82 [snd_soc_dapm_mixer_named_ctl] = 8,
83 [snd_soc_dapm_pga] = 9,
84 [snd_soc_dapm_adc] = 10,
85 [snd_soc_dapm_out_drv] = 11,
86 [snd_soc_dapm_hp] = 11,
87 [snd_soc_dapm_spk] = 11,
88 [snd_soc_dapm_line] = 11,
89 [snd_soc_dapm_kcontrol] = 12,
90 [snd_soc_dapm_post] = 13,
93 static int dapm_down_seq[] = {
94 [snd_soc_dapm_pre] = 0,
95 [snd_soc_dapm_kcontrol] = 1,
96 [snd_soc_dapm_adc] = 2,
97 [snd_soc_dapm_hp] = 3,
98 [snd_soc_dapm_spk] = 3,
99 [snd_soc_dapm_line] = 3,
100 [snd_soc_dapm_out_drv] = 3,
101 [snd_soc_dapm_pga] = 4,
102 [snd_soc_dapm_switch] = 5,
103 [snd_soc_dapm_mixer_named_ctl] = 5,
104 [snd_soc_dapm_mixer] = 5,
105 [snd_soc_dapm_dac] = 6,
106 [snd_soc_dapm_mic] = 7,
107 [snd_soc_dapm_micbias] = 8,
108 [snd_soc_dapm_mux] = 9,
109 [snd_soc_dapm_demux] = 9,
110 [snd_soc_dapm_aif_in] = 10,
111 [snd_soc_dapm_aif_out] = 10,
112 [snd_soc_dapm_dai_in] = 10,
113 [snd_soc_dapm_dai_out] = 10,
114 [snd_soc_dapm_dai_link] = 11,
115 [snd_soc_dapm_supply] = 12,
116 [snd_soc_dapm_clock_supply] = 13,
117 [snd_soc_dapm_regulator_supply] = 13,
118 [snd_soc_dapm_post] = 14,
121 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
123 if (dapm->card && dapm->card->instantiated)
124 lockdep_assert_held(&dapm->card->dapm_mutex);
127 static void pop_wait(u32 pop_time)
130 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
133 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
141 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
146 vsnprintf(buf, PAGE_SIZE, fmt, args);
147 dev_info(dev, "%s", buf);
153 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
155 return !list_empty(&w->dirty);
158 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
160 dapm_assert_locked(w->dapm);
162 if (!dapm_dirty_widget(w)) {
163 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
165 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
170 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of input
172 * @w: The widget for which to invalidate the cached number of input paths
174 * The function resets the cached number of inputs for the specified widget and
175 * all widgets that can be reached via outgoing paths from the widget.
177 * This function must be called if the number of input paths for a widget might
178 * have changed. E.g. if the source state of a widget changes or a path is added
179 * or activated with the widget as the sink.
181 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
183 struct snd_soc_dapm_widget *sink;
184 struct snd_soc_dapm_path *p;
187 dapm_assert_locked(w->dapm);
193 list_add_tail(&w->work_list, &list);
195 list_for_each_entry(w, &list, work_list) {
196 list_for_each_entry(p, &w->sinks, list_source) {
197 if (p->is_supply || p->weak || !p->connect)
200 if (sink->inputs != -1) {
202 list_add_tail(&sink->work_list, &list);
209 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
211 * @w: The widget for which to invalidate the cached number of output paths
213 * Resets the cached number of outputs for the specified widget and all widgets
214 * that can be reached via incoming paths from the widget.
216 * This function must be called if the number of output paths for a widget might
217 * have changed. E.g. if the sink state of a widget changes or a path is added
218 * or activated with the widget as the source.
220 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
222 struct snd_soc_dapm_widget *source;
223 struct snd_soc_dapm_path *p;
226 dapm_assert_locked(w->dapm);
228 if (w->outputs == -1)
232 list_add_tail(&w->work_list, &list);
234 list_for_each_entry(w, &list, work_list) {
235 list_for_each_entry(p, &w->sources, list_sink) {
236 if (p->is_supply || p->weak || !p->connect)
239 if (source->outputs != -1) {
240 source->outputs = -1;
241 list_add_tail(&source->work_list, &list);
248 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
249 * for the widgets connected to a path
250 * @p: The path to invalidate
252 * Resets the cached number of inputs for the sink of the path and the cached
253 * number of outputs for the source of the path.
255 * This function must be called when a path is added, removed or the connected
258 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
261 * Weak paths or supply paths do not influence the number of input or
262 * output paths of their neighbors.
264 if (p->weak || p->is_supply)
268 * The number of connected endpoints is the sum of the number of
269 * connected endpoints of all neighbors. If a node with 0 connected
270 * endpoints is either connected or disconnected that sum won't change,
271 * so there is no need to re-check the path.
273 if (p->source->inputs != 0)
274 dapm_widget_invalidate_input_paths(p->sink);
275 if (p->sink->outputs != 0)
276 dapm_widget_invalidate_output_paths(p->source);
279 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
281 struct snd_soc_dapm_widget *w;
283 mutex_lock(&card->dapm_mutex);
285 list_for_each_entry(w, &card->widgets, list) {
286 if (w->is_sink || w->is_source) {
287 dapm_mark_dirty(w, "Rechecking endpoints");
289 dapm_widget_invalidate_output_paths(w);
291 dapm_widget_invalidate_input_paths(w);
295 mutex_unlock(&card->dapm_mutex);
297 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
299 /* create a new dapm widget */
300 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
301 const struct snd_soc_dapm_widget *_widget)
303 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
306 struct dapm_kcontrol_data {
308 struct snd_soc_dapm_widget *widget;
309 struct list_head paths;
310 struct snd_soc_dapm_widget_list *wlist;
313 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
314 struct snd_kcontrol *kcontrol)
316 struct dapm_kcontrol_data *data;
317 struct soc_mixer_control *mc;
322 data = kzalloc(sizeof(*data), GFP_KERNEL);
326 INIT_LIST_HEAD(&data->paths);
328 switch (widget->id) {
329 case snd_soc_dapm_switch:
330 case snd_soc_dapm_mixer:
331 case snd_soc_dapm_mixer_named_ctl:
332 mc = (struct soc_mixer_control *)kcontrol->private_value;
334 if (mc->autodisable) {
335 struct snd_soc_dapm_widget template;
337 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
344 memset(&template, 0, sizeof(template));
345 template.reg = mc->reg;
346 template.mask = (1 << fls(mc->max)) - 1;
347 template.shift = mc->shift;
349 template.off_val = mc->max;
351 template.off_val = 0;
352 template.on_val = template.off_val;
353 template.id = snd_soc_dapm_kcontrol;
354 template.name = name;
356 data->value = template.on_val;
359 snd_soc_dapm_new_control_unlocked(widget->dapm,
368 case snd_soc_dapm_demux:
369 case snd_soc_dapm_mux:
370 e = (struct soc_enum *)kcontrol->private_value;
372 if (e->autodisable) {
373 struct snd_soc_dapm_widget template;
375 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
382 memset(&template, 0, sizeof(template));
383 template.reg = e->reg;
384 template.mask = e->mask << e->shift_l;
385 template.shift = e->shift_l;
386 template.off_val = snd_soc_enum_item_to_val(e, 0);
387 template.on_val = template.off_val;
388 template.id = snd_soc_dapm_kcontrol;
389 template.name = name;
391 data->value = template.on_val;
393 data->widget = snd_soc_dapm_new_control_unlocked(
394 widget->dapm, &template);
401 snd_soc_dapm_add_path(widget->dapm, data->widget,
409 kcontrol->private_data = data;
418 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
420 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
425 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
426 const struct snd_kcontrol *kcontrol)
428 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
433 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
434 struct snd_soc_dapm_widget *widget)
436 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
437 struct snd_soc_dapm_widget_list *new_wlist;
441 n = data->wlist->num_widgets + 1;
445 new_wlist = krealloc(data->wlist,
446 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
450 new_wlist->widgets[n - 1] = widget;
451 new_wlist->num_widgets = n;
453 data->wlist = new_wlist;
458 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
459 struct snd_soc_dapm_path *path)
461 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
463 list_add_tail(&path->list_kcontrol, &data->paths);
466 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
468 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
473 return data->widget->power;
476 static struct list_head *dapm_kcontrol_get_path_list(
477 const struct snd_kcontrol *kcontrol)
479 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
484 #define dapm_kcontrol_for_each_path(path, kcontrol) \
485 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
488 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
490 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
494 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
496 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
499 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
501 if (data->value == value)
505 data->widget->on_val = value;
513 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
515 * @kcontrol: The kcontrol
517 * Note: This function must only be used on kcontrols that are known to have
518 * been registered for a CODEC. Otherwise the behaviour is undefined.
520 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
521 struct snd_kcontrol *kcontrol)
523 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
525 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
527 static void dapm_reset(struct snd_soc_card *card)
529 struct snd_soc_dapm_widget *w;
531 lockdep_assert_held(&card->dapm_mutex);
533 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
535 list_for_each_entry(w, &card->widgets, list) {
536 w->new_power = w->power;
537 w->power_checked = false;
541 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
543 if (!dapm->component)
545 return dapm->component->name_prefix;
548 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
551 if (!dapm->component)
553 return snd_soc_component_read(dapm->component, reg, value);
556 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
557 int reg, unsigned int mask, unsigned int value)
559 if (!dapm->component)
561 return snd_soc_component_update_bits(dapm->component, reg,
565 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
566 int reg, unsigned int mask, unsigned int value)
568 if (!dapm->component)
570 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
573 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
576 snd_soc_component_async_complete(dapm->component);
579 static struct snd_soc_dapm_widget *
580 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
582 struct snd_soc_dapm_widget *w = wcache->widget;
583 struct list_head *wlist;
588 wlist = &w->dapm->card->widgets;
590 list_for_each_entry_from(w, wlist, list) {
591 if (!strcmp(name, w->name))
602 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
603 struct snd_soc_dapm_widget *w)
609 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
610 * @dapm: The DAPM context for which to set the level
611 * @level: The level to set
613 * Forces the DAPM bias level to a specific state. It will call the bias level
614 * callback of DAPM context with the specified level. This will even happen if
615 * the context is already at the same level. Furthermore it will not go through
616 * the normal bias level sequencing, meaning any intermediate states between the
617 * current and the target state will not be entered.
619 * Note that the change in bias level is only temporary and the next time
620 * snd_soc_dapm_sync() is called the state will be set to the level as
621 * determined by the DAPM core. The function is mainly intended to be used to
622 * used during probe or resume from suspend to power up the device so
623 * initialization can be done, before the DAPM core takes over.
625 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
626 enum snd_soc_bias_level level)
630 if (dapm->set_bias_level)
631 ret = dapm->set_bias_level(dapm, level);
634 dapm->bias_level = level;
638 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
641 * snd_soc_dapm_set_bias_level - set the bias level for the system
642 * @dapm: DAPM context
643 * @level: level to configure
645 * Configure the bias (power) levels for the SoC audio device.
647 * Returns 0 for success else error.
649 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
650 enum snd_soc_bias_level level)
652 struct snd_soc_card *card = dapm->card;
655 trace_snd_soc_bias_level_start(card, level);
657 if (card && card->set_bias_level)
658 ret = card->set_bias_level(card, dapm, level);
662 if (!card || dapm != &card->dapm)
663 ret = snd_soc_dapm_force_bias_level(dapm, level);
668 if (card && card->set_bias_level_post)
669 ret = card->set_bias_level_post(card, dapm, level);
671 trace_snd_soc_bias_level_done(card, level);
676 /* connect mux widget to its interconnecting audio paths */
677 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
678 struct snd_soc_dapm_path *path, const char *control_name,
679 struct snd_soc_dapm_widget *w)
681 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
682 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
683 unsigned int val, item;
686 if (e->reg != SND_SOC_NOPM) {
687 soc_dapm_read(dapm, e->reg, &val);
688 val = (val >> e->shift_l) & e->mask;
689 item = snd_soc_enum_val_to_item(e, val);
691 /* since a virtual mux has no backing registers to
692 * decide which path to connect, it will try to match
693 * with the first enumeration. This is to ensure
694 * that the default mux choice (the first) will be
695 * correctly powered up during initialization.
700 for (i = 0; i < e->items; i++) {
701 if (!(strcmp(control_name, e->texts[i]))) {
702 path->name = e->texts[i];
714 /* set up initial codec paths */
715 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
717 struct soc_mixer_control *mc = (struct soc_mixer_control *)
718 p->sink->kcontrol_news[i].private_value;
719 unsigned int reg = mc->reg;
720 unsigned int shift = mc->shift;
721 unsigned int max = mc->max;
722 unsigned int mask = (1 << fls(max)) - 1;
723 unsigned int invert = mc->invert;
726 if (reg != SND_SOC_NOPM) {
727 soc_dapm_read(p->sink->dapm, reg, &val);
728 val = (val >> shift) & mask;
737 /* connect mixer widget to its interconnecting audio paths */
738 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
739 struct snd_soc_dapm_path *path, const char *control_name)
743 /* search for mixer kcontrol */
744 for (i = 0; i < path->sink->num_kcontrols; i++) {
745 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
746 path->name = path->sink->kcontrol_news[i].name;
747 dapm_set_mixer_path_status(path, i);
754 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
755 struct snd_soc_dapm_widget *kcontrolw,
756 const struct snd_kcontrol_new *kcontrol_new,
757 struct snd_kcontrol **kcontrol)
759 struct snd_soc_dapm_widget *w;
764 list_for_each_entry(w, &dapm->card->widgets, list) {
765 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
767 for (i = 0; i < w->num_kcontrols; i++) {
768 if (&w->kcontrol_news[i] == kcontrol_new) {
770 *kcontrol = w->kcontrols[i];
780 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
781 * create it. Either way, add the widget into the control's widget list
783 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
786 struct snd_soc_dapm_context *dapm = w->dapm;
787 struct snd_card *card = dapm->card->snd_card;
791 struct snd_kcontrol *kcontrol;
792 bool wname_in_long_name, kcname_in_long_name;
793 char *long_name = NULL;
797 prefix = soc_dapm_prefix(dapm);
799 prefix_len = strlen(prefix) + 1;
803 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
808 wname_in_long_name = false;
809 kcname_in_long_name = true;
812 case snd_soc_dapm_switch:
813 case snd_soc_dapm_mixer:
814 wname_in_long_name = true;
815 kcname_in_long_name = true;
817 case snd_soc_dapm_mixer_named_ctl:
818 wname_in_long_name = false;
819 kcname_in_long_name = true;
821 case snd_soc_dapm_demux:
822 case snd_soc_dapm_mux:
823 wname_in_long_name = true;
824 kcname_in_long_name = false;
831 if (wname_in_long_name && kcname_in_long_name) {
833 * The control will get a prefix from the control
834 * creation process but we're also using the same
835 * prefix for widgets so cut the prefix off the
836 * front of the widget name.
838 long_name = kasprintf(GFP_KERNEL, "%s %s",
839 w->name + prefix_len,
840 w->kcontrol_news[kci].name);
841 if (long_name == NULL)
845 } else if (wname_in_long_name) {
847 name = w->name + prefix_len;
850 name = w->kcontrol_news[kci].name;
853 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
860 kcontrol->private_free = dapm_kcontrol_free;
862 ret = dapm_kcontrol_data_alloc(w, kcontrol);
864 snd_ctl_free_one(kcontrol);
868 ret = snd_ctl_add(card, kcontrol);
871 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
877 ret = dapm_kcontrol_add_widget(kcontrol, w);
879 w->kcontrols[kci] = kcontrol;
887 /* create new dapm mixer control */
888 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
891 struct snd_soc_dapm_path *path;
892 struct dapm_kcontrol_data *data;
895 for (i = 0; i < w->num_kcontrols; i++) {
897 list_for_each_entry(path, &w->sources, list_sink) {
898 /* mixer/mux paths name must match control name */
899 if (path->name != (char *)w->kcontrol_news[i].name)
902 if (!w->kcontrols[i]) {
903 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
908 dapm_kcontrol_add_path(w->kcontrols[i], path);
910 data = snd_kcontrol_chip(w->kcontrols[i]);
912 snd_soc_dapm_add_path(data->widget->dapm,
922 /* create new dapm mux control */
923 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
925 struct snd_soc_dapm_context *dapm = w->dapm;
926 struct snd_soc_dapm_path *path;
927 struct list_head *paths;
932 case snd_soc_dapm_mux:
936 case snd_soc_dapm_demux:
944 if (w->num_kcontrols != 1) {
946 "ASoC: %s %s has incorrect number of controls\n", type,
951 if (list_empty(paths)) {
952 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
956 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
960 if (w->id == snd_soc_dapm_mux) {
961 list_for_each_entry(path, &w->sources, list_sink) {
963 dapm_kcontrol_add_path(w->kcontrols[0], path);
966 list_for_each_entry(path, &w->sinks, list_source) {
968 dapm_kcontrol_add_path(w->kcontrols[0], path);
975 /* create new dapm volume control */
976 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
978 if (w->num_kcontrols)
979 dev_err(w->dapm->dev,
980 "ASoC: PGA controls not supported: '%s'\n", w->name);
985 /* create new dapm dai link control */
986 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
989 struct snd_kcontrol *kcontrol;
990 struct snd_soc_dapm_context *dapm = w->dapm;
991 struct snd_card *card = dapm->card->snd_card;
993 /* create control for links with > 1 config */
994 if (w->num_params <= 1)
998 for (i = 0; i < w->num_kcontrols; i++) {
999 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1001 ret = snd_ctl_add(card, kcontrol);
1004 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1005 w->name, w->kcontrol_news[i].name, ret);
1008 kcontrol->private_data = w;
1009 w->kcontrols[i] = kcontrol;
1015 /* We implement power down on suspend by checking the power state of
1016 * the ALSA card - when we are suspending the ALSA state for the card
1019 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1021 int level = snd_power_get_state(widget->dapm->card->snd_card);
1024 case SNDRV_CTL_POWER_D3hot:
1025 case SNDRV_CTL_POWER_D3cold:
1026 if (widget->ignore_suspend)
1027 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1029 return widget->ignore_suspend;
1035 /* add widget to list if it's not already in the list */
1036 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
1037 struct snd_soc_dapm_widget *w)
1039 struct snd_soc_dapm_widget_list *wlist;
1040 int wlistsize, wlistentries, i;
1047 /* is this widget already in the list */
1048 for (i = 0; i < wlist->num_widgets; i++) {
1049 if (wlist->widgets[i] == w)
1053 /* allocate some new space */
1054 wlistentries = wlist->num_widgets + 1;
1055 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
1056 wlistentries * sizeof(struct snd_soc_dapm_widget *);
1057 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
1058 if (*list == NULL) {
1059 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
1065 /* insert the widget */
1066 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
1067 w->name, wlist->num_widgets);
1069 wlist->widgets[wlist->num_widgets] = w;
1070 wlist->num_widgets++;
1075 * Recursively check for a completed path to an active or physically connected
1076 * output widget. Returns number of complete paths.
1078 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1079 struct snd_soc_dapm_widget_list **list)
1081 struct snd_soc_dapm_path *path;
1084 if (widget->outputs >= 0)
1085 return widget->outputs;
1087 DAPM_UPDATE_STAT(widget, path_checks);
1089 if (widget->is_sink && widget->connected) {
1090 widget->outputs = snd_soc_dapm_suspend_check(widget);
1091 return widget->outputs;
1094 list_for_each_entry(path, &widget->sinks, list_source) {
1095 DAPM_UPDATE_STAT(widget, neighbour_checks);
1097 if (path->weak || path->is_supply)
1103 trace_snd_soc_dapm_output_path(widget, path);
1105 if (path->connect) {
1108 /* do we need to add this widget to the list ? */
1111 err = dapm_list_add_widget(list, path->sink);
1113 dev_err(widget->dapm->dev,
1114 "ASoC: could not add widget %s\n",
1121 con += is_connected_output_ep(path->sink, list);
1127 widget->outputs = con;
1133 * Recursively check for a completed path to an active or physically connected
1134 * input widget. Returns number of complete paths.
1136 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1137 struct snd_soc_dapm_widget_list **list)
1139 struct snd_soc_dapm_path *path;
1142 if (widget->inputs >= 0)
1143 return widget->inputs;
1145 DAPM_UPDATE_STAT(widget, path_checks);
1147 if (widget->is_source && widget->connected) {
1148 widget->inputs = snd_soc_dapm_suspend_check(widget);
1149 return widget->inputs;
1152 list_for_each_entry(path, &widget->sources, list_sink) {
1153 DAPM_UPDATE_STAT(widget, neighbour_checks);
1155 if (path->weak || path->is_supply)
1161 trace_snd_soc_dapm_input_path(widget, path);
1163 if (path->connect) {
1166 /* do we need to add this widget to the list ? */
1169 err = dapm_list_add_widget(list, path->source);
1171 dev_err(widget->dapm->dev,
1172 "ASoC: could not add widget %s\n",
1179 con += is_connected_input_ep(path->source, list);
1185 widget->inputs = con;
1191 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1192 * @dai: the soc DAI.
1193 * @stream: stream direction.
1194 * @list: list of active widgets for this stream.
1196 * Queries DAPM graph as to whether an valid audio stream path exists for
1197 * the initial stream specified by name. This takes into account
1198 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1200 * Returns the number of valid paths or negative error.
1202 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1203 struct snd_soc_dapm_widget_list **list)
1205 struct snd_soc_card *card = dai->component->card;
1206 struct snd_soc_dapm_widget *w;
1209 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1212 * For is_connected_{output,input}_ep fully discover the graph we need
1213 * to reset the cached number of inputs and outputs.
1215 list_for_each_entry(w, &card->widgets, list) {
1220 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1221 paths = is_connected_output_ep(dai->playback_widget, list);
1223 paths = is_connected_input_ep(dai->capture_widget, list);
1225 trace_snd_soc_dapm_connected(paths, stream);
1226 mutex_unlock(&card->dapm_mutex);
1232 * Handler for regulator supply widget.
1234 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1235 struct snd_kcontrol *kcontrol, int event)
1239 soc_dapm_async_complete(w->dapm);
1241 if (SND_SOC_DAPM_EVENT_ON(event)) {
1242 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1243 ret = regulator_allow_bypass(w->regulator, false);
1245 dev_warn(w->dapm->dev,
1246 "ASoC: Failed to unbypass %s: %d\n",
1250 return regulator_enable(w->regulator);
1252 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1253 ret = regulator_allow_bypass(w->regulator, true);
1255 dev_warn(w->dapm->dev,
1256 "ASoC: Failed to bypass %s: %d\n",
1260 return regulator_disable_deferred(w->regulator, w->shift);
1263 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1266 * Handler for clock supply widget.
1268 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1269 struct snd_kcontrol *kcontrol, int event)
1274 soc_dapm_async_complete(w->dapm);
1276 #ifdef CONFIG_HAVE_CLK
1277 if (SND_SOC_DAPM_EVENT_ON(event)) {
1278 return clk_prepare_enable(w->clk);
1280 clk_disable_unprepare(w->clk);
1286 EXPORT_SYMBOL_GPL(dapm_clock_event);
1288 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1290 if (w->power_checked)
1291 return w->new_power;
1296 w->new_power = w->power_check(w);
1298 w->power_checked = true;
1300 return w->new_power;
1303 /* Generic check to see if a widget should be powered.
1305 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1309 DAPM_UPDATE_STAT(w, power_checks);
1311 in = is_connected_input_ep(w, NULL);
1312 out = is_connected_output_ep(w, NULL);
1313 return out != 0 && in != 0;
1316 /* Check to see if a power supply is needed */
1317 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1319 struct snd_soc_dapm_path *path;
1321 DAPM_UPDATE_STAT(w, power_checks);
1323 /* Check if one of our outputs is connected */
1324 list_for_each_entry(path, &w->sinks, list_source) {
1325 DAPM_UPDATE_STAT(w, neighbour_checks);
1330 if (path->connected &&
1331 !path->connected(path->source, path->sink))
1334 if (dapm_widget_power_check(path->sink))
1341 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1346 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1347 struct snd_soc_dapm_widget *b,
1355 sort = dapm_down_seq;
1357 if (sort[a->id] != sort[b->id])
1358 return sort[a->id] - sort[b->id];
1359 if (a->subseq != b->subseq) {
1361 return a->subseq - b->subseq;
1363 return b->subseq - a->subseq;
1365 if (a->reg != b->reg)
1366 return a->reg - b->reg;
1367 if (a->dapm != b->dapm)
1368 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1373 /* Insert a widget in order into a DAPM power sequence. */
1374 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1375 struct list_head *list,
1378 struct snd_soc_dapm_widget *w;
1380 list_for_each_entry(w, list, power_list)
1381 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1382 list_add_tail(&new_widget->power_list, &w->power_list);
1386 list_add_tail(&new_widget->power_list, list);
1389 static void dapm_seq_check_event(struct snd_soc_card *card,
1390 struct snd_soc_dapm_widget *w, int event)
1392 const char *ev_name;
1396 case SND_SOC_DAPM_PRE_PMU:
1397 ev_name = "PRE_PMU";
1400 case SND_SOC_DAPM_POST_PMU:
1401 ev_name = "POST_PMU";
1404 case SND_SOC_DAPM_PRE_PMD:
1405 ev_name = "PRE_PMD";
1408 case SND_SOC_DAPM_POST_PMD:
1409 ev_name = "POST_PMD";
1412 case SND_SOC_DAPM_WILL_PMU:
1413 ev_name = "WILL_PMU";
1416 case SND_SOC_DAPM_WILL_PMD:
1417 ev_name = "WILL_PMD";
1421 WARN(1, "Unknown event %d\n", event);
1425 if (w->new_power != power)
1428 if (w->event && (w->event_flags & event)) {
1429 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1431 soc_dapm_async_complete(w->dapm);
1432 trace_snd_soc_dapm_widget_event_start(w, event);
1433 ret = w->event(w, NULL, event);
1434 trace_snd_soc_dapm_widget_event_done(w, event);
1436 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1437 ev_name, w->name, ret);
1441 /* Apply the coalesced changes from a DAPM sequence */
1442 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1443 struct list_head *pending)
1445 struct snd_soc_dapm_context *dapm;
1446 struct snd_soc_dapm_widget *w;
1448 unsigned int value = 0;
1449 unsigned int mask = 0;
1451 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1455 list_for_each_entry(w, pending, power_list) {
1456 WARN_ON(reg != w->reg || dapm != w->dapm);
1457 w->power = w->new_power;
1459 mask |= w->mask << w->shift;
1461 value |= w->on_val << w->shift;
1463 value |= w->off_val << w->shift;
1465 pop_dbg(dapm->dev, card->pop_time,
1466 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1467 w->name, reg, value, mask);
1469 /* Check for events */
1470 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1471 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1475 /* Any widget will do, they should all be updating the
1479 pop_dbg(dapm->dev, card->pop_time,
1480 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1481 value, mask, reg, card->pop_time);
1482 pop_wait(card->pop_time);
1483 soc_dapm_update_bits(dapm, reg, mask, value);
1486 list_for_each_entry(w, pending, power_list) {
1487 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1488 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1492 /* Apply a DAPM power sequence.
1494 * We walk over a pre-sorted list of widgets to apply power to. In
1495 * order to minimise the number of writes to the device required
1496 * multiple widgets will be updated in a single write where possible.
1497 * Currently anything that requires more than a single write is not
1500 static void dapm_seq_run(struct snd_soc_card *card,
1501 struct list_head *list, int event, bool power_up)
1503 struct snd_soc_dapm_widget *w, *n;
1504 struct snd_soc_dapm_context *d;
1507 int cur_subseq = -1;
1508 int cur_reg = SND_SOC_NOPM;
1509 struct snd_soc_dapm_context *cur_dapm = NULL;
1516 sort = dapm_down_seq;
1518 list_for_each_entry_safe(w, n, list, power_list) {
1521 /* Do we need to apply any queued changes? */
1522 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1523 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1524 if (!list_empty(&pending))
1525 dapm_seq_run_coalesced(card, &pending);
1527 if (cur_dapm && cur_dapm->seq_notifier) {
1528 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1529 if (sort[i] == cur_sort)
1530 cur_dapm->seq_notifier(cur_dapm,
1535 if (cur_dapm && w->dapm != cur_dapm)
1536 soc_dapm_async_complete(cur_dapm);
1538 INIT_LIST_HEAD(&pending);
1540 cur_subseq = INT_MIN;
1541 cur_reg = SND_SOC_NOPM;
1546 case snd_soc_dapm_pre:
1548 list_for_each_entry_safe_continue(w, n, list,
1551 if (event == SND_SOC_DAPM_STREAM_START)
1553 NULL, SND_SOC_DAPM_PRE_PMU);
1554 else if (event == SND_SOC_DAPM_STREAM_STOP)
1556 NULL, SND_SOC_DAPM_PRE_PMD);
1559 case snd_soc_dapm_post:
1561 list_for_each_entry_safe_continue(w, n, list,
1564 if (event == SND_SOC_DAPM_STREAM_START)
1566 NULL, SND_SOC_DAPM_POST_PMU);
1567 else if (event == SND_SOC_DAPM_STREAM_STOP)
1569 NULL, SND_SOC_DAPM_POST_PMD);
1573 /* Queue it up for application */
1574 cur_sort = sort[w->id];
1575 cur_subseq = w->subseq;
1578 list_move(&w->power_list, &pending);
1583 dev_err(w->dapm->dev,
1584 "ASoC: Failed to apply widget power: %d\n", ret);
1587 if (!list_empty(&pending))
1588 dapm_seq_run_coalesced(card, &pending);
1590 if (cur_dapm && cur_dapm->seq_notifier) {
1591 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1592 if (sort[i] == cur_sort)
1593 cur_dapm->seq_notifier(cur_dapm,
1597 list_for_each_entry(d, &card->dapm_list, list) {
1598 soc_dapm_async_complete(d);
1602 static void dapm_widget_update(struct snd_soc_card *card)
1604 struct snd_soc_dapm_update *update = card->update;
1605 struct snd_soc_dapm_widget_list *wlist;
1606 struct snd_soc_dapm_widget *w = NULL;
1610 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1613 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1615 for (wi = 0; wi < wlist->num_widgets; wi++) {
1616 w = wlist->widgets[wi];
1618 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1619 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1621 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1629 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1632 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1635 for (wi = 0; wi < wlist->num_widgets; wi++) {
1636 w = wlist->widgets[wi];
1638 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1639 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1641 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1647 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1648 * they're changing state.
1650 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1652 struct snd_soc_dapm_context *d = data;
1655 /* If we're off and we're not supposed to be go into STANDBY */
1656 if (d->bias_level == SND_SOC_BIAS_OFF &&
1657 d->target_bias_level != SND_SOC_BIAS_OFF) {
1659 pm_runtime_get_sync(d->dev);
1661 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1664 "ASoC: Failed to turn on bias: %d\n", ret);
1667 /* Prepare for a transition to ON or away from ON */
1668 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1669 d->bias_level != SND_SOC_BIAS_ON) ||
1670 (d->target_bias_level != SND_SOC_BIAS_ON &&
1671 d->bias_level == SND_SOC_BIAS_ON)) {
1672 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1675 "ASoC: Failed to prepare bias: %d\n", ret);
1679 /* Async callback run prior to DAPM sequences - brings to their final
1682 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1684 struct snd_soc_dapm_context *d = data;
1687 /* If we just powered the last thing off drop to standby bias */
1688 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1689 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1690 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1691 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1693 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1697 /* If we're in standby and can support bias off then do that */
1698 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1699 d->target_bias_level == SND_SOC_BIAS_OFF) {
1700 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1702 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1706 pm_runtime_put(d->dev);
1709 /* If we just powered up then move to active bias */
1710 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1711 d->target_bias_level == SND_SOC_BIAS_ON) {
1712 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1714 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1719 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1720 bool power, bool connect)
1722 /* If a connection is being made or broken then that update
1723 * will have marked the peer dirty, otherwise the widgets are
1724 * not connected and this update has no impact. */
1728 /* If the peer is already in the state we're moving to then we
1729 * won't have an impact on it. */
1730 if (power != peer->power)
1731 dapm_mark_dirty(peer, "peer state change");
1734 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1735 struct list_head *up_list,
1736 struct list_head *down_list)
1738 struct snd_soc_dapm_path *path;
1740 if (w->power == power)
1743 trace_snd_soc_dapm_widget_power(w, power);
1745 /* If we changed our power state perhaps our neigbours changed
1748 list_for_each_entry(path, &w->sources, list_sink)
1749 dapm_widget_set_peer_power(path->source, power, path->connect);
1751 /* Supplies can't affect their outputs, only their inputs */
1752 if (!w->is_supply) {
1753 list_for_each_entry(path, &w->sinks, list_source)
1754 dapm_widget_set_peer_power(path->sink, power,
1759 dapm_seq_insert(w, up_list, true);
1761 dapm_seq_insert(w, down_list, false);
1764 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1765 struct list_head *up_list,
1766 struct list_head *down_list)
1771 case snd_soc_dapm_pre:
1772 dapm_seq_insert(w, down_list, false);
1774 case snd_soc_dapm_post:
1775 dapm_seq_insert(w, up_list, true);
1779 power = dapm_widget_power_check(w);
1781 dapm_widget_set_power(w, power, up_list, down_list);
1786 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1788 if (dapm->idle_bias_off)
1791 switch (snd_power_get_state(dapm->card->snd_card)) {
1792 case SNDRV_CTL_POWER_D3hot:
1793 case SNDRV_CTL_POWER_D3cold:
1794 return dapm->suspend_bias_off;
1803 * Scan each dapm widget for complete audio path.
1804 * A complete path is a route that has valid endpoints i.e.:-
1806 * o DAC to output pin.
1807 * o Input Pin to ADC.
1808 * o Input pin to Output pin (bypass, sidetone)
1809 * o DAC to ADC (loopback).
1811 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1813 struct snd_soc_dapm_widget *w;
1814 struct snd_soc_dapm_context *d;
1816 LIST_HEAD(down_list);
1817 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1818 enum snd_soc_bias_level bias;
1820 lockdep_assert_held(&card->dapm_mutex);
1822 trace_snd_soc_dapm_start(card);
1824 list_for_each_entry(d, &card->dapm_list, list) {
1825 if (dapm_idle_bias_off(d))
1826 d->target_bias_level = SND_SOC_BIAS_OFF;
1828 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1833 /* Check which widgets we need to power and store them in
1834 * lists indicating if they should be powered up or down. We
1835 * only check widgets that have been flagged as dirty but note
1836 * that new widgets may be added to the dirty list while we
1839 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1840 dapm_power_one_widget(w, &up_list, &down_list);
1843 list_for_each_entry(w, &card->widgets, list) {
1845 case snd_soc_dapm_pre:
1846 case snd_soc_dapm_post:
1847 /* These widgets always need to be powered */
1850 list_del_init(&w->dirty);
1857 /* Supplies and micbiases only bring the
1858 * context up to STANDBY as unless something
1859 * else is active and passing audio they
1860 * generally don't require full power. Signal
1861 * generators are virtual pins and have no
1862 * power impact themselves.
1865 case snd_soc_dapm_siggen:
1866 case snd_soc_dapm_vmid:
1868 case snd_soc_dapm_supply:
1869 case snd_soc_dapm_regulator_supply:
1870 case snd_soc_dapm_clock_supply:
1871 case snd_soc_dapm_micbias:
1872 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1873 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1876 d->target_bias_level = SND_SOC_BIAS_ON;
1883 /* Force all contexts in the card to the same bias state if
1884 * they're not ground referenced.
1886 bias = SND_SOC_BIAS_OFF;
1887 list_for_each_entry(d, &card->dapm_list, list)
1888 if (d->target_bias_level > bias)
1889 bias = d->target_bias_level;
1890 list_for_each_entry(d, &card->dapm_list, list)
1891 if (!dapm_idle_bias_off(d))
1892 d->target_bias_level = bias;
1894 trace_snd_soc_dapm_walk_done(card);
1896 /* Run card bias changes at first */
1897 dapm_pre_sequence_async(&card->dapm, 0);
1898 /* Run other bias changes in parallel */
1899 list_for_each_entry(d, &card->dapm_list, list) {
1900 if (d != &card->dapm)
1901 async_schedule_domain(dapm_pre_sequence_async, d,
1904 async_synchronize_full_domain(&async_domain);
1906 list_for_each_entry(w, &down_list, power_list) {
1907 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1910 list_for_each_entry(w, &up_list, power_list) {
1911 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1914 /* Power down widgets first; try to avoid amplifying pops. */
1915 dapm_seq_run(card, &down_list, event, false);
1917 dapm_widget_update(card);
1920 dapm_seq_run(card, &up_list, event, true);
1922 /* Run all the bias changes in parallel */
1923 list_for_each_entry(d, &card->dapm_list, list) {
1924 if (d != &card->dapm)
1925 async_schedule_domain(dapm_post_sequence_async, d,
1928 async_synchronize_full_domain(&async_domain);
1929 /* Run card bias changes at last */
1930 dapm_post_sequence_async(&card->dapm, 0);
1932 /* do we need to notify any clients that DAPM event is complete */
1933 list_for_each_entry(d, &card->dapm_list, list) {
1934 if (d->stream_event)
1935 d->stream_event(d, event);
1938 pop_dbg(card->dev, card->pop_time,
1939 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1940 pop_wait(card->pop_time);
1942 trace_snd_soc_dapm_done(card);
1947 #ifdef CONFIG_DEBUG_FS
1948 static ssize_t dapm_widget_power_read_file(struct file *file,
1949 char __user *user_buf,
1950 size_t count, loff_t *ppos)
1952 struct snd_soc_dapm_widget *w = file->private_data;
1953 struct snd_soc_card *card = w->dapm->card;
1957 struct snd_soc_dapm_path *p = NULL;
1959 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1963 mutex_lock(&card->dapm_mutex);
1965 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1970 in = is_connected_input_ep(w, NULL);
1971 out = is_connected_output_ep(w, NULL);
1974 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1975 w->name, w->power ? "On" : "Off",
1976 w->force ? " (forced)" : "", in, out);
1979 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1980 " - R%d(0x%x) mask 0x%x",
1981 w->reg, w->reg, w->mask << w->shift);
1983 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1986 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1988 w->active ? "active" : "inactive");
1990 list_for_each_entry(p, &w->sources, list_sink) {
1991 if (p->connected && !p->connected(w, p->source))
1995 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1996 " in \"%s\" \"%s\"\n",
1997 p->name ? p->name : "static",
2000 list_for_each_entry(p, &w->sinks, list_source) {
2001 if (p->connected && !p->connected(w, p->sink))
2005 ret += snprintf(buf + ret, PAGE_SIZE - ret,
2006 " out \"%s\" \"%s\"\n",
2007 p->name ? p->name : "static",
2011 mutex_unlock(&card->dapm_mutex);
2013 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2019 static const struct file_operations dapm_widget_power_fops = {
2020 .open = simple_open,
2021 .read = dapm_widget_power_read_file,
2022 .llseek = default_llseek,
2025 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2026 size_t count, loff_t *ppos)
2028 struct snd_soc_dapm_context *dapm = file->private_data;
2031 switch (dapm->bias_level) {
2032 case SND_SOC_BIAS_ON:
2035 case SND_SOC_BIAS_PREPARE:
2036 level = "Prepare\n";
2038 case SND_SOC_BIAS_STANDBY:
2039 level = "Standby\n";
2041 case SND_SOC_BIAS_OFF:
2045 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2046 level = "Unknown\n";
2050 return simple_read_from_buffer(user_buf, count, ppos, level,
2054 static const struct file_operations dapm_bias_fops = {
2055 .open = simple_open,
2056 .read = dapm_bias_read_file,
2057 .llseek = default_llseek,
2060 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2061 struct dentry *parent)
2068 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2070 if (!dapm->debugfs_dapm) {
2072 "ASoC: Failed to create DAPM debugfs directory\n");
2076 d = debugfs_create_file("bias_level", 0444,
2077 dapm->debugfs_dapm, dapm,
2081 "ASoC: Failed to create bias level debugfs file\n");
2084 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2086 struct snd_soc_dapm_context *dapm = w->dapm;
2089 if (!dapm->debugfs_dapm || !w->name)
2092 d = debugfs_create_file(w->name, 0444,
2093 dapm->debugfs_dapm, w,
2094 &dapm_widget_power_fops);
2096 dev_warn(w->dapm->dev,
2097 "ASoC: Failed to create %s debugfs file\n",
2101 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2103 debugfs_remove_recursive(dapm->debugfs_dapm);
2107 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2108 struct dentry *parent)
2112 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2116 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2123 * soc_dapm_connect_path() - Connects or disconnects a path
2124 * @path: The path to update
2125 * @connect: The new connect state of the path. True if the path is connected,
2126 * false if it is disconneted.
2127 * @reason: The reason why the path changed (for debugging only)
2129 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2130 bool connect, const char *reason)
2132 if (path->connect == connect)
2135 path->connect = connect;
2136 dapm_mark_dirty(path->source, reason);
2137 dapm_mark_dirty(path->sink, reason);
2138 dapm_path_invalidate(path);
2141 /* test and update the power status of a mux widget */
2142 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2143 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2145 struct snd_soc_dapm_path *path;
2149 lockdep_assert_held(&card->dapm_mutex);
2151 /* find dapm widget path assoc with kcontrol */
2152 dapm_kcontrol_for_each_path(path, kcontrol) {
2154 /* we now need to match the string in the enum to the path */
2155 if (!(strcmp(path->name, e->texts[mux])))
2160 soc_dapm_connect_path(path, connect, "mux update");
2164 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2169 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2170 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2171 struct snd_soc_dapm_update *update)
2173 struct snd_soc_card *card = dapm->card;
2176 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2177 card->update = update;
2178 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2179 card->update = NULL;
2180 mutex_unlock(&card->dapm_mutex);
2182 soc_dpcm_runtime_update(card);
2185 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2187 /* test and update the power status of a mixer or switch widget */
2188 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2189 struct snd_kcontrol *kcontrol, int connect)
2191 struct snd_soc_dapm_path *path;
2194 lockdep_assert_held(&card->dapm_mutex);
2196 /* find dapm widget path assoc with kcontrol */
2197 dapm_kcontrol_for_each_path(path, kcontrol) {
2199 soc_dapm_connect_path(path, connect, "mixer update");
2203 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2208 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2209 struct snd_kcontrol *kcontrol, int connect,
2210 struct snd_soc_dapm_update *update)
2212 struct snd_soc_card *card = dapm->card;
2215 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2216 card->update = update;
2217 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2218 card->update = NULL;
2219 mutex_unlock(&card->dapm_mutex);
2221 soc_dpcm_runtime_update(card);
2224 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2226 static ssize_t dapm_widget_show_codec(struct snd_soc_codec *codec, char *buf)
2228 struct snd_soc_dapm_widget *w;
2230 char *state = "not set";
2232 list_for_each_entry(w, &codec->component.card->widgets, list) {
2233 if (w->dapm != &codec->dapm)
2236 /* only display widgets that burnm power */
2238 case snd_soc_dapm_hp:
2239 case snd_soc_dapm_mic:
2240 case snd_soc_dapm_spk:
2241 case snd_soc_dapm_line:
2242 case snd_soc_dapm_micbias:
2243 case snd_soc_dapm_dac:
2244 case snd_soc_dapm_adc:
2245 case snd_soc_dapm_pga:
2246 case snd_soc_dapm_out_drv:
2247 case snd_soc_dapm_mixer:
2248 case snd_soc_dapm_mixer_named_ctl:
2249 case snd_soc_dapm_supply:
2250 case snd_soc_dapm_regulator_supply:
2251 case snd_soc_dapm_clock_supply:
2253 count += sprintf(buf + count, "%s: %s\n",
2254 w->name, w->power ? "On":"Off");
2261 switch (codec->dapm.bias_level) {
2262 case SND_SOC_BIAS_ON:
2265 case SND_SOC_BIAS_PREPARE:
2268 case SND_SOC_BIAS_STANDBY:
2271 case SND_SOC_BIAS_OFF:
2275 count += sprintf(buf + count, "PM State: %s\n", state);
2280 /* show dapm widget status in sys fs */
2281 static ssize_t dapm_widget_show(struct device *dev,
2282 struct device_attribute *attr, char *buf)
2284 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2287 mutex_lock(&rtd->card->dapm_mutex);
2289 for (i = 0; i < rtd->num_codecs; i++) {
2290 struct snd_soc_codec *codec = rtd->codec_dais[i]->codec;
2291 count += dapm_widget_show_codec(codec, buf + count);
2294 mutex_unlock(&rtd->card->dapm_mutex);
2299 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2301 struct attribute *soc_dapm_dev_attrs[] = {
2302 &dev_attr_dapm_widget.attr,
2306 static void dapm_free_path(struct snd_soc_dapm_path *path)
2308 list_del(&path->list_sink);
2309 list_del(&path->list_source);
2310 list_del(&path->list_kcontrol);
2311 list_del(&path->list);
2315 /* free all dapm widgets and resources */
2316 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2318 struct snd_soc_dapm_widget *w, *next_w;
2319 struct snd_soc_dapm_path *p, *next_p;
2321 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2322 if (w->dapm != dapm)
2326 * remove source and sink paths associated to this widget.
2327 * While removing the path, remove reference to it from both
2328 * source and sink widgets so that path is removed only once.
2330 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2333 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2336 kfree(w->kcontrols);
2342 static struct snd_soc_dapm_widget *dapm_find_widget(
2343 struct snd_soc_dapm_context *dapm, const char *pin,
2344 bool search_other_contexts)
2346 struct snd_soc_dapm_widget *w;
2347 struct snd_soc_dapm_widget *fallback = NULL;
2349 list_for_each_entry(w, &dapm->card->widgets, list) {
2350 if (!strcmp(w->name, pin)) {
2351 if (w->dapm == dapm)
2358 if (search_other_contexts)
2364 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2365 const char *pin, int status)
2367 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2369 dapm_assert_locked(dapm);
2372 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2376 if (w->connected != status) {
2377 dapm_mark_dirty(w, "pin configuration");
2378 dapm_widget_invalidate_input_paths(w);
2379 dapm_widget_invalidate_output_paths(w);
2382 w->connected = status;
2390 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2391 * @dapm: DAPM context
2393 * Walks all dapm audio paths and powers widgets according to their
2394 * stream or path usage.
2396 * Requires external locking.
2398 * Returns 0 for success.
2400 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2403 * Suppress early reports (eg, jacks syncing their state) to avoid
2404 * silly DAPM runs during card startup.
2406 if (!dapm->card || !dapm->card->instantiated)
2409 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2411 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2414 * snd_soc_dapm_sync - scan and power dapm paths
2415 * @dapm: DAPM context
2417 * Walks all dapm audio paths and powers widgets according to their
2418 * stream or path usage.
2420 * Returns 0 for success.
2422 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2426 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2427 ret = snd_soc_dapm_sync_unlocked(dapm);
2428 mutex_unlock(&dapm->card->dapm_mutex);
2431 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2434 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2435 * @w: The widget for which to update the flags
2437 * Some widgets have a dynamic category which depends on which neighbors they
2438 * are connected to. This function update the category for these widgets.
2440 * This function must be called whenever a path is added or removed to a widget.
2442 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2444 struct snd_soc_dapm_path *p;
2447 case snd_soc_dapm_input:
2448 /* On a fully routed card a input is never a source */
2449 if (w->dapm->card->fully_routed)
2452 list_for_each_entry(p, &w->sources, list_sink) {
2453 if (p->source->id == snd_soc_dapm_micbias ||
2454 p->source->id == snd_soc_dapm_mic ||
2455 p->source->id == snd_soc_dapm_line ||
2456 p->source->id == snd_soc_dapm_output) {
2462 case snd_soc_dapm_output:
2463 /* On a fully routed card a output is never a sink */
2464 if (w->dapm->card->fully_routed)
2467 list_for_each_entry(p, &w->sinks, list_source) {
2468 if (p->sink->id == snd_soc_dapm_spk ||
2469 p->sink->id == snd_soc_dapm_hp ||
2470 p->sink->id == snd_soc_dapm_line ||
2471 p->sink->id == snd_soc_dapm_input) {
2477 case snd_soc_dapm_line:
2478 w->is_sink = !list_empty(&w->sources);
2479 w->is_source = !list_empty(&w->sinks);
2486 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2487 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2488 const char *control)
2490 bool dynamic_source = false;
2491 bool dynamic_sink = false;
2496 switch (source->id) {
2497 case snd_soc_dapm_demux:
2498 dynamic_source = true;
2505 case snd_soc_dapm_mux:
2506 case snd_soc_dapm_switch:
2507 case snd_soc_dapm_mixer:
2508 case snd_soc_dapm_mixer_named_ctl:
2509 dynamic_sink = true;
2515 if (dynamic_source && dynamic_sink) {
2517 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2518 source->name, control, sink->name);
2520 } else if (!dynamic_source && !dynamic_sink) {
2522 "Control not supported for path %s -> [%s] -> %s\n",
2523 source->name, control, sink->name);
2530 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2531 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2532 const char *control,
2533 int (*connected)(struct snd_soc_dapm_widget *source,
2534 struct snd_soc_dapm_widget *sink))
2536 struct snd_soc_dapm_path *path;
2539 if (wsink->is_supply && !wsource->is_supply) {
2541 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2542 wsource->name, wsink->name);
2546 if (connected && !wsource->is_supply) {
2548 "connected() callback only supported for supply widgets (%s -> %s)\n",
2549 wsource->name, wsink->name);
2553 if (wsource->is_supply && control) {
2555 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2556 wsource->name, control, wsink->name);
2560 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2564 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2568 path->source = wsource;
2570 path->connected = connected;
2571 INIT_LIST_HEAD(&path->list);
2572 INIT_LIST_HEAD(&path->list_kcontrol);
2573 INIT_LIST_HEAD(&path->list_source);
2574 INIT_LIST_HEAD(&path->list_sink);
2576 if (wsource->is_supply || wsink->is_supply)
2577 path->is_supply = 1;
2579 /* connect static paths */
2580 if (control == NULL) {
2583 switch (wsource->id) {
2584 case snd_soc_dapm_demux:
2585 ret = dapm_connect_mux(dapm, path, control, wsource);
2593 switch (wsink->id) {
2594 case snd_soc_dapm_mux:
2595 ret = dapm_connect_mux(dapm, path, control, wsink);
2599 case snd_soc_dapm_switch:
2600 case snd_soc_dapm_mixer:
2601 case snd_soc_dapm_mixer_named_ctl:
2602 ret = dapm_connect_mixer(dapm, path, control);
2611 list_add(&path->list, &dapm->card->paths);
2612 list_add(&path->list_sink, &wsink->sources);
2613 list_add(&path->list_source, &wsource->sinks);
2615 dapm_update_widget_flags(wsource);
2616 dapm_update_widget_flags(wsink);
2618 dapm_mark_dirty(wsource, "Route added");
2619 dapm_mark_dirty(wsink, "Route added");
2621 if (dapm->card->instantiated && path->connect)
2622 dapm_path_invalidate(path);
2630 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2631 const struct snd_soc_dapm_route *route)
2633 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2634 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2637 char prefixed_sink[80];
2638 char prefixed_source[80];
2642 prefix = soc_dapm_prefix(dapm);
2644 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2645 prefix, route->sink);
2646 sink = prefixed_sink;
2647 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2648 prefix, route->source);
2649 source = prefixed_source;
2652 source = route->source;
2655 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2656 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2658 if (wsink && wsource)
2662 * find src and dest widgets over all widgets but favor a widget from
2663 * current DAPM context
2665 list_for_each_entry(w, &dapm->card->widgets, list) {
2666 if (!wsink && !(strcmp(w->name, sink))) {
2668 if (w->dapm == dapm) {
2675 if (!wsource && !(strcmp(w->name, source))) {
2677 if (w->dapm == dapm) {
2684 /* use widget from another DAPM context if not found from this */
2690 if (wsource == NULL) {
2691 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2695 if (wsink == NULL) {
2696 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2702 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2703 dapm_wcache_update(&dapm->path_source_cache, wsource);
2705 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2712 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2713 source, route->control, sink);
2717 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2718 const struct snd_soc_dapm_route *route)
2720 struct snd_soc_dapm_widget *wsource, *wsink;
2721 struct snd_soc_dapm_path *path, *p;
2724 char prefixed_sink[80];
2725 char prefixed_source[80];
2728 if (route->control) {
2730 "ASoC: Removal of routes with controls not supported\n");
2734 prefix = soc_dapm_prefix(dapm);
2736 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2737 prefix, route->sink);
2738 sink = prefixed_sink;
2739 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2740 prefix, route->source);
2741 source = prefixed_source;
2744 source = route->source;
2748 list_for_each_entry(p, &dapm->card->paths, list) {
2749 if (strcmp(p->source->name, source) != 0)
2751 if (strcmp(p->sink->name, sink) != 0)
2758 wsource = path->source;
2761 dapm_mark_dirty(wsource, "Route removed");
2762 dapm_mark_dirty(wsink, "Route removed");
2764 dapm_path_invalidate(path);
2766 dapm_free_path(path);
2768 /* Update any path related flags */
2769 dapm_update_widget_flags(wsource);
2770 dapm_update_widget_flags(wsink);
2772 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2780 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2781 * @dapm: DAPM context
2782 * @route: audio routes
2783 * @num: number of routes
2785 * Connects 2 dapm widgets together via a named audio path. The sink is
2786 * the widget receiving the audio signal, whilst the source is the sender
2787 * of the audio signal.
2789 * Returns 0 for success else error. On error all resources can be freed
2790 * with a call to snd_soc_card_free().
2792 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2793 const struct snd_soc_dapm_route *route, int num)
2797 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2798 for (i = 0; i < num; i++) {
2799 r = snd_soc_dapm_add_route(dapm, route);
2801 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2803 route->control ? route->control : "direct",
2809 mutex_unlock(&dapm->card->dapm_mutex);
2813 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2816 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2817 * @dapm: DAPM context
2818 * @route: audio routes
2819 * @num: number of routes
2821 * Removes routes from the DAPM context.
2823 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2824 const struct snd_soc_dapm_route *route, int num)
2828 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2829 for (i = 0; i < num; i++) {
2830 snd_soc_dapm_del_route(dapm, route);
2833 mutex_unlock(&dapm->card->dapm_mutex);
2837 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2839 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2840 const struct snd_soc_dapm_route *route)
2842 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2845 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2848 struct snd_soc_dapm_path *path;
2852 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2858 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2863 if (route->control || route->connected)
2864 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2865 route->source, route->sink);
2867 list_for_each_entry(path, &source->sinks, list_source) {
2868 if (path->sink == sink) {
2875 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2876 route->source, route->sink);
2878 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2879 count, route->source, route->sink);
2885 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2886 * @dapm: DAPM context
2887 * @route: audio routes
2888 * @num: number of routes
2890 * Mark existing routes matching those specified in the passed array
2891 * as being weak, meaning that they are ignored for the purpose of
2892 * power decisions. The main intended use case is for sidetone paths
2893 * which couple audio between other independent paths if they are both
2894 * active in order to make the combination work better at the user
2895 * level but which aren't intended to be "used".
2897 * Note that CODEC drivers should not use this as sidetone type paths
2898 * can frequently also be used as bypass paths.
2900 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2901 const struct snd_soc_dapm_route *route, int num)
2906 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2907 for (i = 0; i < num; i++) {
2908 err = snd_soc_dapm_weak_route(dapm, route);
2913 mutex_unlock(&dapm->card->dapm_mutex);
2917 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2920 * snd_soc_dapm_new_widgets - add new dapm widgets
2921 * @dapm: DAPM context
2923 * Checks the codec for any new dapm widgets and creates them if found.
2925 * Returns 0 for success.
2927 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2929 struct snd_soc_dapm_widget *w;
2932 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2934 list_for_each_entry(w, &card->widgets, list)
2939 if (w->num_kcontrols) {
2940 w->kcontrols = kzalloc(w->num_kcontrols *
2941 sizeof(struct snd_kcontrol *),
2943 if (!w->kcontrols) {
2944 mutex_unlock(&card->dapm_mutex);
2950 case snd_soc_dapm_switch:
2951 case snd_soc_dapm_mixer:
2952 case snd_soc_dapm_mixer_named_ctl:
2955 case snd_soc_dapm_mux:
2956 case snd_soc_dapm_demux:
2959 case snd_soc_dapm_pga:
2960 case snd_soc_dapm_out_drv:
2963 case snd_soc_dapm_dai_link:
2964 dapm_new_dai_link(w);
2970 /* Read the initial power state from the device */
2972 soc_dapm_read(w->dapm, w->reg, &val);
2973 val = val >> w->shift;
2975 if (val == w->on_val)
2981 dapm_mark_dirty(w, "new widget");
2982 dapm_debugfs_add_widget(w);
2985 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2986 mutex_unlock(&card->dapm_mutex);
2989 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2992 * snd_soc_dapm_get_volsw - dapm mixer get callback
2993 * @kcontrol: mixer control
2994 * @ucontrol: control element information
2996 * Callback to get the value of a dapm mixer control.
2998 * Returns 0 for success.
3000 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3001 struct snd_ctl_elem_value *ucontrol)
3003 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3004 struct snd_soc_card *card = dapm->card;
3005 struct soc_mixer_control *mc =
3006 (struct soc_mixer_control *)kcontrol->private_value;
3008 unsigned int shift = mc->shift;
3010 unsigned int mask = (1 << fls(max)) - 1;
3011 unsigned int invert = mc->invert;
3015 if (snd_soc_volsw_is_stereo(mc))
3017 "ASoC: Control '%s' is stereo, which is not supported\n",
3020 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3021 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3022 ret = soc_dapm_read(dapm, reg, &val);
3023 val = (val >> shift) & mask;
3025 val = dapm_kcontrol_get_value(kcontrol);
3027 mutex_unlock(&card->dapm_mutex);
3030 ucontrol->value.integer.value[0] = max - val;
3032 ucontrol->value.integer.value[0] = val;
3036 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3039 * snd_soc_dapm_put_volsw - dapm mixer set callback
3040 * @kcontrol: mixer control
3041 * @ucontrol: control element information
3043 * Callback to set the value of a dapm mixer control.
3045 * Returns 0 for success.
3047 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3048 struct snd_ctl_elem_value *ucontrol)
3050 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3051 struct snd_soc_card *card = dapm->card;
3052 struct soc_mixer_control *mc =
3053 (struct soc_mixer_control *)kcontrol->private_value;
3055 unsigned int shift = mc->shift;
3057 unsigned int mask = (1 << fls(max)) - 1;
3058 unsigned int invert = mc->invert;
3060 int connect, change, reg_change = 0;
3061 struct snd_soc_dapm_update update;
3064 if (snd_soc_volsw_is_stereo(mc))
3066 "ASoC: Control '%s' is stereo, which is not supported\n",
3069 val = (ucontrol->value.integer.value[0] & mask);
3075 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3077 change = dapm_kcontrol_set_value(kcontrol, val);
3079 if (reg != SND_SOC_NOPM) {
3080 mask = mask << shift;
3083 reg_change = soc_dapm_test_bits(dapm, reg, mask, val);
3086 if (change || reg_change) {
3088 update.kcontrol = kcontrol;
3092 card->update = &update;
3094 change |= reg_change;
3096 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
3098 card->update = NULL;
3101 mutex_unlock(&card->dapm_mutex);
3104 soc_dpcm_runtime_update(card);
3108 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3111 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3112 * @kcontrol: mixer control
3113 * @ucontrol: control element information
3115 * Callback to get the value of a dapm enumerated double mixer control.
3117 * Returns 0 for success.
3119 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3120 struct snd_ctl_elem_value *ucontrol)
3122 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3123 struct snd_soc_card *card = dapm->card;
3124 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3125 unsigned int reg_val, val;
3127 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3128 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3129 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3131 mutex_unlock(&card->dapm_mutex);
3135 reg_val = dapm_kcontrol_get_value(kcontrol);
3137 mutex_unlock(&card->dapm_mutex);
3139 val = (reg_val >> e->shift_l) & e->mask;
3140 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3141 if (e->shift_l != e->shift_r) {
3142 val = (reg_val >> e->shift_r) & e->mask;
3143 val = snd_soc_enum_val_to_item(e, val);
3144 ucontrol->value.enumerated.item[1] = val;
3149 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3152 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3153 * @kcontrol: mixer control
3154 * @ucontrol: control element information
3156 * Callback to set the value of a dapm enumerated double mixer control.
3158 * Returns 0 for success.
3160 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3161 struct snd_ctl_elem_value *ucontrol)
3163 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3164 struct snd_soc_card *card = dapm->card;
3165 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3166 unsigned int *item = ucontrol->value.enumerated.item;
3167 unsigned int val, change, reg_change = 0;
3169 struct snd_soc_dapm_update update;
3172 if (item[0] >= e->items)
3175 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3176 mask = e->mask << e->shift_l;
3177 if (e->shift_l != e->shift_r) {
3178 if (item[1] > e->items)
3180 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
3181 mask |= e->mask << e->shift_r;
3184 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3186 change = dapm_kcontrol_set_value(kcontrol, val);
3188 if (e->reg != SND_SOC_NOPM)
3189 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3191 if (change || reg_change) {
3193 update.kcontrol = kcontrol;
3194 update.reg = e->reg;
3197 card->update = &update;
3199 change |= reg_change;
3201 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3203 card->update = NULL;
3206 mutex_unlock(&card->dapm_mutex);
3209 soc_dpcm_runtime_update(card);
3213 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3216 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3218 * @kcontrol: mixer control
3219 * @uinfo: control element information
3221 * Callback to provide information about a pin switch control.
3223 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3224 struct snd_ctl_elem_info *uinfo)
3226 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3228 uinfo->value.integer.min = 0;
3229 uinfo->value.integer.max = 1;
3233 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3236 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3238 * @kcontrol: mixer control
3241 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3242 struct snd_ctl_elem_value *ucontrol)
3244 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3245 const char *pin = (const char *)kcontrol->private_value;
3247 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3249 ucontrol->value.integer.value[0] =
3250 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3252 mutex_unlock(&card->dapm_mutex);
3256 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3259 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3261 * @kcontrol: mixer control
3264 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3265 struct snd_ctl_elem_value *ucontrol)
3267 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3268 const char *pin = (const char *)kcontrol->private_value;
3270 if (ucontrol->value.integer.value[0])
3271 snd_soc_dapm_enable_pin(&card->dapm, pin);
3273 snd_soc_dapm_disable_pin(&card->dapm, pin);
3275 snd_soc_dapm_sync(&card->dapm);
3278 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3280 struct snd_soc_dapm_widget *
3281 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3282 const struct snd_soc_dapm_widget *widget)
3284 struct snd_soc_dapm_widget *w;
3286 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3287 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3290 "ASoC: Failed to create DAPM control %s\n",
3293 mutex_unlock(&dapm->card->dapm_mutex);
3297 struct snd_soc_dapm_widget *
3298 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3299 const struct snd_soc_dapm_widget *widget)
3301 struct snd_soc_dapm_widget *w;
3305 if ((w = dapm_cnew_widget(widget)) == NULL)
3309 case snd_soc_dapm_regulator_supply:
3310 w->regulator = devm_regulator_get(dapm->dev, w->name);
3311 if (IS_ERR(w->regulator)) {
3312 ret = PTR_ERR(w->regulator);
3313 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3318 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3319 ret = regulator_allow_bypass(w->regulator, true);
3321 dev_warn(w->dapm->dev,
3322 "ASoC: Failed to bypass %s: %d\n",
3326 case snd_soc_dapm_clock_supply:
3327 #ifdef CONFIG_CLKDEV_LOOKUP
3328 w->clk = devm_clk_get(dapm->dev, w->name);
3329 if (IS_ERR(w->clk)) {
3330 ret = PTR_ERR(w->clk);
3331 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3343 prefix = soc_dapm_prefix(dapm);
3345 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3347 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3348 if (w->name == NULL) {
3354 case snd_soc_dapm_mic:
3356 w->power_check = dapm_generic_check_power;
3358 case snd_soc_dapm_input:
3359 if (!dapm->card->fully_routed)
3361 w->power_check = dapm_generic_check_power;
3363 case snd_soc_dapm_spk:
3364 case snd_soc_dapm_hp:
3366 w->power_check = dapm_generic_check_power;
3368 case snd_soc_dapm_output:
3369 if (!dapm->card->fully_routed)
3371 w->power_check = dapm_generic_check_power;
3373 case snd_soc_dapm_vmid:
3374 case snd_soc_dapm_siggen:
3376 w->power_check = dapm_always_on_check_power;
3378 case snd_soc_dapm_mux:
3379 case snd_soc_dapm_demux:
3380 case snd_soc_dapm_switch:
3381 case snd_soc_dapm_mixer:
3382 case snd_soc_dapm_mixer_named_ctl:
3383 case snd_soc_dapm_adc:
3384 case snd_soc_dapm_aif_out:
3385 case snd_soc_dapm_dac:
3386 case snd_soc_dapm_aif_in:
3387 case snd_soc_dapm_pga:
3388 case snd_soc_dapm_out_drv:
3389 case snd_soc_dapm_micbias:
3390 case snd_soc_dapm_line:
3391 case snd_soc_dapm_dai_link:
3392 case snd_soc_dapm_dai_out:
3393 case snd_soc_dapm_dai_in:
3394 w->power_check = dapm_generic_check_power;
3396 case snd_soc_dapm_supply:
3397 case snd_soc_dapm_regulator_supply:
3398 case snd_soc_dapm_clock_supply:
3399 case snd_soc_dapm_kcontrol:
3401 w->power_check = dapm_supply_check_power;
3404 w->power_check = dapm_always_on_check_power;
3409 INIT_LIST_HEAD(&w->sources);
3410 INIT_LIST_HEAD(&w->sinks);
3411 INIT_LIST_HEAD(&w->list);
3412 INIT_LIST_HEAD(&w->dirty);
3413 list_add_tail(&w->list, &dapm->card->widgets);
3418 /* machine layer set ups unconnected pins and insertions */
3424 * snd_soc_dapm_new_controls - create new dapm controls
3425 * @dapm: DAPM context
3426 * @widget: widget array
3427 * @num: number of widgets
3429 * Creates new DAPM controls based upon the templates.
3431 * Returns 0 for success else error.
3433 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3434 const struct snd_soc_dapm_widget *widget,
3437 struct snd_soc_dapm_widget *w;
3441 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3442 for (i = 0; i < num; i++) {
3443 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3446 "ASoC: Failed to create DAPM control %s\n",
3453 mutex_unlock(&dapm->card->dapm_mutex);
3456 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3458 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3459 struct snd_kcontrol *kcontrol, int event)
3461 struct snd_soc_dapm_path *source_p, *sink_p;
3462 struct snd_soc_dai *source, *sink;
3463 const struct snd_soc_pcm_stream *config = w->params + w->params_select;
3464 struct snd_pcm_substream substream;
3465 struct snd_pcm_hw_params *params = NULL;
3469 if (WARN_ON(!config) ||
3470 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3473 /* We only support a single source and sink, pick the first */
3474 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3476 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3479 if (WARN_ON(!source_p || !sink_p) ||
3480 WARN_ON(!sink_p->source || !source_p->sink) ||
3481 WARN_ON(!source_p->source || !sink_p->sink))
3484 source = source_p->source->priv;
3485 sink = sink_p->sink->priv;
3487 /* Be a little careful as we don't want to overflow the mask array */
3488 if (config->formats) {
3489 fmt = ffs(config->formats) - 1;
3491 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3496 /* Currently very limited parameter selection */
3497 params = kzalloc(sizeof(*params), GFP_KERNEL);
3502 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3504 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3506 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3509 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3510 = config->channels_min;
3511 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3512 = config->channels_max;
3514 memset(&substream, 0, sizeof(substream));
3517 case SND_SOC_DAPM_PRE_PMU:
3518 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3519 ret = soc_dai_hw_params(&substream, params, source);
3523 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3524 ret = soc_dai_hw_params(&substream, params, sink);
3529 case SND_SOC_DAPM_POST_PMU:
3530 ret = snd_soc_dai_digital_mute(sink, 0,
3531 SNDRV_PCM_STREAM_PLAYBACK);
3532 if (ret != 0 && ret != -ENOTSUPP)
3533 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3537 case SND_SOC_DAPM_PRE_PMD:
3538 ret = snd_soc_dai_digital_mute(sink, 1,
3539 SNDRV_PCM_STREAM_PLAYBACK);
3540 if (ret != 0 && ret != -ENOTSUPP)
3541 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3546 WARN(1, "Unknown event %d\n", event);
3555 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
3556 struct snd_ctl_elem_value *ucontrol)
3558 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3560 ucontrol->value.integer.value[0] = w->params_select;
3565 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
3566 struct snd_ctl_elem_value *ucontrol)
3568 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3570 /* Can't change the config when widget is already powered */
3574 if (ucontrol->value.integer.value[0] == w->params_select)
3577 if (ucontrol->value.integer.value[0] >= w->num_params)
3580 w->params_select = ucontrol->value.integer.value[0];
3585 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3586 const struct snd_soc_pcm_stream *params,
3587 unsigned int num_params,
3588 struct snd_soc_dapm_widget *source,
3589 struct snd_soc_dapm_widget *sink)
3591 struct snd_soc_dapm_widget template;
3592 struct snd_soc_dapm_widget *w;
3595 unsigned long private_value;
3596 const char **w_param_text;
3597 struct soc_enum w_param_enum[] = {
3598 SOC_ENUM_SINGLE(0, 0, 0, NULL),
3600 struct snd_kcontrol_new kcontrol_dai_link[] = {
3601 SOC_ENUM_EXT(NULL, w_param_enum[0],
3602 snd_soc_dapm_dai_link_get,
3603 snd_soc_dapm_dai_link_put),
3605 const struct snd_soc_pcm_stream *config = params;
3607 w_param_text = devm_kcalloc(card->dev, num_params,
3608 sizeof(char *), GFP_KERNEL);
3612 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
3613 source->name, sink->name);
3616 goto outfree_w_param;
3619 for (count = 0 ; count < num_params; count++) {
3620 if (!config->stream_name) {
3621 dev_warn(card->dapm.dev,
3622 "ASoC: anonymous config %d for dai link %s\n",
3624 w_param_text[count] =
3625 devm_kasprintf(card->dev, GFP_KERNEL,
3626 "Anonymous Configuration %d",
3628 if (!w_param_text[count]) {
3630 goto outfree_link_name;
3633 w_param_text[count] = devm_kmemdup(card->dev,
3634 config->stream_name,
3635 strlen(config->stream_name) + 1,
3637 if (!w_param_text[count]) {
3639 goto outfree_link_name;
3644 w_param_enum[0].items = num_params;
3645 w_param_enum[0].texts = w_param_text;
3647 memset(&template, 0, sizeof(template));
3648 template.reg = SND_SOC_NOPM;
3649 template.id = snd_soc_dapm_dai_link;
3650 template.name = link_name;
3651 template.event = snd_soc_dai_link_event;
3652 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3653 SND_SOC_DAPM_PRE_PMD;
3654 template.num_kcontrols = 1;
3655 /* duplicate w_param_enum on heap so that memory persists */
3657 (unsigned long) devm_kmemdup(card->dev,
3658 (void *)(kcontrol_dai_link[0].private_value),
3659 sizeof(struct soc_enum), GFP_KERNEL);
3660 if (!private_value) {
3661 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3664 goto outfree_link_name;
3666 kcontrol_dai_link[0].private_value = private_value;
3667 /* duplicate kcontrol_dai_link on heap so that memory persists */
3668 template.kcontrol_news =
3669 devm_kmemdup(card->dev, &kcontrol_dai_link[0],
3670 sizeof(struct snd_kcontrol_new),
3672 if (!template.kcontrol_news) {
3673 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3676 goto outfree_private_value;
3679 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3681 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
3683 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3686 goto outfree_kcontrol_news;
3690 w->num_params = num_params;
3692 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
3695 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
3698 devm_kfree(card->dev, w);
3699 outfree_kcontrol_news:
3700 devm_kfree(card->dev, (void *)template.kcontrol_news);
3701 outfree_private_value:
3702 devm_kfree(card->dev, (void *)private_value);
3704 devm_kfree(card->dev, link_name);
3706 for (count = 0 ; count < num_params; count++)
3707 devm_kfree(card->dev, (void *)w_param_text[count]);
3708 devm_kfree(card->dev, w_param_text);
3713 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3714 struct snd_soc_dai *dai)
3716 struct snd_soc_dapm_widget template;
3717 struct snd_soc_dapm_widget *w;
3719 WARN_ON(dapm->dev != dai->dev);
3721 memset(&template, 0, sizeof(template));
3722 template.reg = SND_SOC_NOPM;
3724 if (dai->driver->playback.stream_name) {
3725 template.id = snd_soc_dapm_dai_in;
3726 template.name = dai->driver->playback.stream_name;
3727 template.sname = dai->driver->playback.stream_name;
3729 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3732 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3734 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3735 dai->driver->playback.stream_name);
3740 dai->playback_widget = w;
3743 if (dai->driver->capture.stream_name) {
3744 template.id = snd_soc_dapm_dai_out;
3745 template.name = dai->driver->capture.stream_name;
3746 template.sname = dai->driver->capture.stream_name;
3748 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3751 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3753 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3754 dai->driver->capture.stream_name);
3759 dai->capture_widget = w;
3765 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3767 struct snd_soc_dapm_widget *dai_w, *w;
3768 struct snd_soc_dapm_widget *src, *sink;
3769 struct snd_soc_dai *dai;
3771 /* For each DAI widget... */
3772 list_for_each_entry(dai_w, &card->widgets, list) {
3773 switch (dai_w->id) {
3774 case snd_soc_dapm_dai_in:
3775 case snd_soc_dapm_dai_out:
3783 /* ...find all widgets with the same stream and link them */
3784 list_for_each_entry(w, &card->widgets, list) {
3785 if (w->dapm != dai_w->dapm)
3789 case snd_soc_dapm_dai_in:
3790 case snd_soc_dapm_dai_out:
3796 if (!w->sname || !strstr(w->sname, dai_w->sname))
3799 if (dai_w->id == snd_soc_dapm_dai_in) {
3806 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
3807 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
3814 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
3815 struct snd_soc_pcm_runtime *rtd)
3817 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3818 struct snd_soc_dapm_widget *sink, *source;
3821 for (i = 0; i < rtd->num_codecs; i++) {
3822 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
3824 /* there is no point in connecting BE DAI links with dummies */
3825 if (snd_soc_dai_is_dummy(codec_dai) ||
3826 snd_soc_dai_is_dummy(cpu_dai))
3829 /* connect BE DAI playback if widgets are valid */
3830 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3831 source = cpu_dai->playback_widget;
3832 sink = codec_dai->playback_widget;
3833 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3834 cpu_dai->component->name, source->name,
3835 codec_dai->component->name, sink->name);
3837 snd_soc_dapm_add_path(&card->dapm, source, sink,
3841 /* connect BE DAI capture if widgets are valid */
3842 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3843 source = codec_dai->capture_widget;
3844 sink = cpu_dai->capture_widget;
3845 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3846 codec_dai->component->name, source->name,
3847 cpu_dai->component->name, sink->name);
3849 snd_soc_dapm_add_path(&card->dapm, source, sink,
3855 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
3858 struct snd_soc_dapm_widget *w;
3860 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
3861 w = dai->playback_widget;
3863 w = dai->capture_widget;
3866 dapm_mark_dirty(w, "stream event");
3869 case SND_SOC_DAPM_STREAM_START:
3872 case SND_SOC_DAPM_STREAM_STOP:
3875 case SND_SOC_DAPM_STREAM_SUSPEND:
3876 case SND_SOC_DAPM_STREAM_RESUME:
3877 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3878 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3882 if (w->id == snd_soc_dapm_dai_in) {
3883 w->is_source = w->active;
3884 dapm_widget_invalidate_input_paths(w);
3886 w->is_sink = w->active;
3887 dapm_widget_invalidate_output_paths(w);
3892 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3894 struct snd_soc_pcm_runtime *rtd = card->rtd;
3897 /* for each BE DAI link... */
3898 for (i = 0; i < card->num_rtd; i++) {
3899 rtd = &card->rtd[i];
3902 * dynamic FE links have no fixed DAI mapping.
3903 * CODEC<->CODEC links have no direct connection.
3905 if (rtd->dai_link->dynamic || rtd->dai_link->params)
3908 dapm_connect_dai_link_widgets(card, rtd);
3912 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3917 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
3918 for (i = 0; i < rtd->num_codecs; i++)
3919 soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
3921 dapm_power_widgets(rtd->card, event);
3925 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3926 * @rtd: PCM runtime data
3927 * @stream: stream name
3928 * @event: stream event
3930 * Sends a stream event to the dapm core. The core then makes any
3931 * necessary widget power changes.
3933 * Returns 0 for success else error.
3935 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3938 struct snd_soc_card *card = rtd->card;
3940 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3941 soc_dapm_stream_event(rtd, stream, event);
3942 mutex_unlock(&card->dapm_mutex);
3946 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3947 * @dapm: DAPM context
3950 * Enables input/output pin and its parents or children widgets iff there is
3951 * a valid audio route and active audio stream.
3953 * Requires external locking.
3955 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3956 * do any widget power switching.
3958 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3961 return snd_soc_dapm_set_pin(dapm, pin, 1);
3963 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3966 * snd_soc_dapm_enable_pin - enable pin.
3967 * @dapm: DAPM context
3970 * Enables input/output pin and its parents or children widgets iff there is
3971 * a valid audio route and active audio stream.
3973 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3974 * do any widget power switching.
3976 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3980 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3982 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3984 mutex_unlock(&dapm->card->dapm_mutex);
3988 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3991 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3992 * @dapm: DAPM context
3995 * Enables input/output pin regardless of any other state. This is
3996 * intended for use with microphone bias supplies used in microphone
3999 * Requires external locking.
4001 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4002 * do any widget power switching.
4004 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4007 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4010 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4014 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4015 if (!w->connected) {
4017 * w->force does not affect the number of input or output paths,
4018 * so we only have to recheck if w->connected is changed
4020 dapm_widget_invalidate_input_paths(w);
4021 dapm_widget_invalidate_output_paths(w);
4025 dapm_mark_dirty(w, "force enable");
4029 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4032 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4033 * @dapm: DAPM context
4036 * Enables input/output pin regardless of any other state. This is
4037 * intended for use with microphone bias supplies used in microphone
4040 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4041 * do any widget power switching.
4043 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4048 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4050 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4052 mutex_unlock(&dapm->card->dapm_mutex);
4056 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4059 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4060 * @dapm: DAPM context
4063 * Disables input/output pin and its parents or children widgets.
4065 * Requires external locking.
4067 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4068 * do any widget power switching.
4070 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4073 return snd_soc_dapm_set_pin(dapm, pin, 0);
4075 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4078 * snd_soc_dapm_disable_pin - disable pin.
4079 * @dapm: DAPM context
4082 * Disables input/output pin and its parents or children widgets.
4084 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4085 * do any widget power switching.
4087 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4092 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4094 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4096 mutex_unlock(&dapm->card->dapm_mutex);
4100 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4103 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4104 * @dapm: DAPM context
4107 * Marks the specified pin as being not connected, disabling it along
4108 * any parent or child widgets. At present this is identical to
4109 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4110 * additional things such as disabling controls which only affect
4111 * paths through the pin.
4113 * Requires external locking.
4115 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4116 * do any widget power switching.
4118 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4121 return snd_soc_dapm_set_pin(dapm, pin, 0);
4123 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4126 * snd_soc_dapm_nc_pin - permanently disable pin.
4127 * @dapm: DAPM context
4130 * Marks the specified pin as being not connected, disabling it along
4131 * any parent or child widgets. At present this is identical to
4132 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4133 * additional things such as disabling controls which only affect
4134 * paths through the pin.
4136 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4137 * do any widget power switching.
4139 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4143 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4145 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4147 mutex_unlock(&dapm->card->dapm_mutex);
4151 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4154 * snd_soc_dapm_get_pin_status - get audio pin status
4155 * @dapm: DAPM context
4156 * @pin: audio signal pin endpoint (or start point)
4158 * Get audio pin status - connected or disconnected.
4160 * Returns 1 for connected otherwise 0.
4162 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4165 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4168 return w->connected;
4172 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4175 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4176 * @dapm: DAPM context
4177 * @pin: audio signal pin endpoint (or start point)
4179 * Mark the given endpoint or pin as ignoring suspend. When the
4180 * system is disabled a path between two endpoints flagged as ignoring
4181 * suspend will not be disabled. The path must already be enabled via
4182 * normal means at suspend time, it will not be turned on if it was not
4185 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4188 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4191 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4195 w->ignore_suspend = 1;
4199 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4202 * snd_soc_dapm_free - free dapm resources
4203 * @dapm: DAPM context
4205 * Free all dapm widgets and resources.
4207 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4209 dapm_debugfs_cleanup(dapm);
4210 dapm_free_widgets(dapm);
4211 list_del(&dapm->list);
4213 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4215 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4217 struct snd_soc_card *card = dapm->card;
4218 struct snd_soc_dapm_widget *w;
4219 LIST_HEAD(down_list);
4222 mutex_lock(&card->dapm_mutex);
4224 list_for_each_entry(w, &dapm->card->widgets, list) {
4225 if (w->dapm != dapm)
4228 dapm_seq_insert(w, &down_list, false);
4234 /* If there were no widgets to power down we're already in
4238 if (dapm->bias_level == SND_SOC_BIAS_ON)
4239 snd_soc_dapm_set_bias_level(dapm,
4240 SND_SOC_BIAS_PREPARE);
4241 dapm_seq_run(card, &down_list, 0, false);
4242 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4243 snd_soc_dapm_set_bias_level(dapm,
4244 SND_SOC_BIAS_STANDBY);
4247 mutex_unlock(&card->dapm_mutex);
4251 * snd_soc_dapm_shutdown - callback for system shutdown
4253 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4255 struct snd_soc_dapm_context *dapm;
4257 list_for_each_entry(dapm, &card->dapm_list, list) {
4258 if (dapm != &card->dapm) {
4259 soc_dapm_shutdown_dapm(dapm);
4260 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4261 snd_soc_dapm_set_bias_level(dapm,
4266 soc_dapm_shutdown_dapm(&card->dapm);
4267 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4268 snd_soc_dapm_set_bias_level(&card->dapm,
4272 /* Module information */
4273 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4274 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4275 MODULE_LICENSE("GPL");