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 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
51 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
53 #define snd_soc_dapm_for_each_direction(dir) \
54 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
57 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
58 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
60 int (*connected)(struct snd_soc_dapm_widget *source,
61 struct snd_soc_dapm_widget *sink));
63 struct snd_soc_dapm_widget *
64 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
65 const struct snd_soc_dapm_widget *widget);
67 struct snd_soc_dapm_widget *
68 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
69 const struct snd_soc_dapm_widget *widget);
71 /* dapm power sequences - make this per codec in the future */
72 static int dapm_up_seq[] = {
73 [snd_soc_dapm_pre] = 0,
74 [snd_soc_dapm_regulator_supply] = 1,
75 [snd_soc_dapm_clock_supply] = 1,
76 [snd_soc_dapm_supply] = 2,
77 [snd_soc_dapm_micbias] = 3,
78 [snd_soc_dapm_dai_link] = 2,
79 [snd_soc_dapm_dai_in] = 4,
80 [snd_soc_dapm_dai_out] = 4,
81 [snd_soc_dapm_aif_in] = 4,
82 [snd_soc_dapm_aif_out] = 4,
83 [snd_soc_dapm_mic] = 5,
84 [snd_soc_dapm_mux] = 6,
85 [snd_soc_dapm_demux] = 6,
86 [snd_soc_dapm_dac] = 7,
87 [snd_soc_dapm_switch] = 8,
88 [snd_soc_dapm_mixer] = 8,
89 [snd_soc_dapm_mixer_named_ctl] = 8,
90 [snd_soc_dapm_pga] = 9,
91 [snd_soc_dapm_adc] = 10,
92 [snd_soc_dapm_out_drv] = 11,
93 [snd_soc_dapm_hp] = 11,
94 [snd_soc_dapm_spk] = 11,
95 [snd_soc_dapm_line] = 11,
96 [snd_soc_dapm_kcontrol] = 12,
97 [snd_soc_dapm_post] = 13,
100 static int dapm_down_seq[] = {
101 [snd_soc_dapm_pre] = 0,
102 [snd_soc_dapm_kcontrol] = 1,
103 [snd_soc_dapm_adc] = 2,
104 [snd_soc_dapm_hp] = 3,
105 [snd_soc_dapm_spk] = 3,
106 [snd_soc_dapm_line] = 3,
107 [snd_soc_dapm_out_drv] = 3,
108 [snd_soc_dapm_pga] = 4,
109 [snd_soc_dapm_switch] = 5,
110 [snd_soc_dapm_mixer_named_ctl] = 5,
111 [snd_soc_dapm_mixer] = 5,
112 [snd_soc_dapm_dac] = 6,
113 [snd_soc_dapm_mic] = 7,
114 [snd_soc_dapm_micbias] = 8,
115 [snd_soc_dapm_mux] = 9,
116 [snd_soc_dapm_demux] = 9,
117 [snd_soc_dapm_aif_in] = 10,
118 [snd_soc_dapm_aif_out] = 10,
119 [snd_soc_dapm_dai_in] = 10,
120 [snd_soc_dapm_dai_out] = 10,
121 [snd_soc_dapm_dai_link] = 11,
122 [snd_soc_dapm_supply] = 12,
123 [snd_soc_dapm_clock_supply] = 13,
124 [snd_soc_dapm_regulator_supply] = 13,
125 [snd_soc_dapm_post] = 14,
128 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
130 if (dapm->card && dapm->card->instantiated)
131 lockdep_assert_held(&dapm->card->dapm_mutex);
134 static void pop_wait(u32 pop_time)
137 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
140 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
148 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
153 vsnprintf(buf, PAGE_SIZE, fmt, args);
154 dev_info(dev, "%s", buf);
160 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
162 return !list_empty(&w->dirty);
165 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
167 dapm_assert_locked(w->dapm);
169 if (!dapm_dirty_widget(w)) {
170 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
172 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
177 * Common implementation for dapm_widget_invalidate_input_paths() and
178 * dapm_widget_invalidate_output_paths(). The function is inlined since the
179 * combined size of the two specialized functions is only marginally larger then
180 * the size of the generic function and at the same time the fast path of the
181 * specialized functions is significantly smaller than the generic function.
183 static __always_inline void dapm_widget_invalidate_paths(
184 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
186 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
187 struct snd_soc_dapm_widget *node;
188 struct snd_soc_dapm_path *p;
191 dapm_assert_locked(w->dapm);
193 if (w->endpoints[dir] == -1)
196 list_add_tail(&w->work_list, &list);
197 w->endpoints[dir] = -1;
199 list_for_each_entry(w, &list, work_list) {
200 snd_soc_dapm_widget_for_each_path(w, dir, p) {
201 if (p->is_supply || p->weak || !p->connect)
203 node = p->node[rdir];
204 if (node->endpoints[dir] != -1) {
205 node->endpoints[dir] = -1;
206 list_add_tail(&node->work_list, &list);
213 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
215 * @w: The widget for which to invalidate the cached number of input paths
217 * Resets the cached number of inputs for the specified widget and all widgets
218 * that can be reached via outcoming paths from the widget.
220 * This function must be called if the number of output paths for a widget might
221 * have changed. E.g. if the source state of a widget changes or a path is added
222 * or activated with the widget as the sink.
224 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
226 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
230 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
232 * @w: The widget for which to invalidate the cached number of output paths
234 * Resets the cached number of outputs for the specified widget and all widgets
235 * that can be reached via incoming paths from the widget.
237 * This function must be called if the number of output paths for a widget might
238 * have changed. E.g. if the sink state of a widget changes or a path is added
239 * or activated with the widget as the source.
241 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
243 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
247 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
248 * for the widgets connected to a path
249 * @p: The path to invalidate
251 * Resets the cached number of inputs for the sink of the path and the cached
252 * number of outputs for the source of the path.
254 * This function must be called when a path is added, removed or the connected
257 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
260 * Weak paths or supply paths do not influence the number of input or
261 * output paths of their neighbors.
263 if (p->weak || p->is_supply)
267 * The number of connected endpoints is the sum of the number of
268 * connected endpoints of all neighbors. If a node with 0 connected
269 * endpoints is either connected or disconnected that sum won't change,
270 * so there is no need to re-check the path.
272 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
273 dapm_widget_invalidate_input_paths(p->sink);
274 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
275 dapm_widget_invalidate_output_paths(p->source);
278 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
280 struct snd_soc_dapm_widget *w;
282 mutex_lock(&card->dapm_mutex);
284 list_for_each_entry(w, &card->widgets, list) {
286 dapm_mark_dirty(w, "Rechecking endpoints");
287 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
288 dapm_widget_invalidate_output_paths(w);
289 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
290 dapm_widget_invalidate_input_paths(w);
294 mutex_unlock(&card->dapm_mutex);
296 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
298 /* create a new dapm widget */
299 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
300 const struct snd_soc_dapm_widget *_widget)
302 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
305 struct dapm_kcontrol_data {
307 struct snd_soc_dapm_widget *widget;
308 struct list_head paths;
309 struct snd_soc_dapm_widget_list *wlist;
312 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
313 struct snd_kcontrol *kcontrol)
315 struct dapm_kcontrol_data *data;
316 struct soc_mixer_control *mc;
321 data = kzalloc(sizeof(*data), GFP_KERNEL);
325 INIT_LIST_HEAD(&data->paths);
327 switch (widget->id) {
328 case snd_soc_dapm_switch:
329 case snd_soc_dapm_mixer:
330 case snd_soc_dapm_mixer_named_ctl:
331 mc = (struct soc_mixer_control *)kcontrol->private_value;
333 if (mc->autodisable) {
334 struct snd_soc_dapm_widget template;
336 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
343 memset(&template, 0, sizeof(template));
344 template.reg = mc->reg;
345 template.mask = (1 << fls(mc->max)) - 1;
346 template.shift = mc->shift;
348 template.off_val = mc->max;
350 template.off_val = 0;
351 template.on_val = template.off_val;
352 template.id = snd_soc_dapm_kcontrol;
353 template.name = name;
355 data->value = template.on_val;
358 snd_soc_dapm_new_control_unlocked(widget->dapm,
367 case snd_soc_dapm_demux:
368 case snd_soc_dapm_mux:
369 e = (struct soc_enum *)kcontrol->private_value;
371 if (e->autodisable) {
372 struct snd_soc_dapm_widget template;
374 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
381 memset(&template, 0, sizeof(template));
382 template.reg = e->reg;
383 template.mask = e->mask << e->shift_l;
384 template.shift = e->shift_l;
385 template.off_val = snd_soc_enum_item_to_val(e, 0);
386 template.on_val = template.off_val;
387 template.id = snd_soc_dapm_kcontrol;
388 template.name = name;
390 data->value = template.on_val;
392 data->widget = snd_soc_dapm_new_control_unlocked(
393 widget->dapm, &template);
400 snd_soc_dapm_add_path(widget->dapm, data->widget,
408 kcontrol->private_data = data;
417 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
419 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
424 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
425 const struct snd_kcontrol *kcontrol)
427 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
432 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
433 struct snd_soc_dapm_widget *widget)
435 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
436 struct snd_soc_dapm_widget_list *new_wlist;
440 n = data->wlist->num_widgets + 1;
444 new_wlist = krealloc(data->wlist,
445 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
449 new_wlist->widgets[n - 1] = widget;
450 new_wlist->num_widgets = n;
452 data->wlist = new_wlist;
457 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
458 struct snd_soc_dapm_path *path)
460 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
462 list_add_tail(&path->list_kcontrol, &data->paths);
465 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
467 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
472 return data->widget->power;
475 static struct list_head *dapm_kcontrol_get_path_list(
476 const struct snd_kcontrol *kcontrol)
478 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
483 #define dapm_kcontrol_for_each_path(path, kcontrol) \
484 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
487 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
489 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
493 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
495 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
498 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
500 if (data->value == value)
504 data->widget->on_val = value;
512 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
514 * @kcontrol: The kcontrol
516 * Note: This function must only be used on kcontrols that are known to have
517 * been registered for a CODEC. Otherwise the behaviour is undefined.
519 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
520 struct snd_kcontrol *kcontrol)
522 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
524 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
526 static void dapm_reset(struct snd_soc_card *card)
528 struct snd_soc_dapm_widget *w;
530 lockdep_assert_held(&card->dapm_mutex);
532 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
534 list_for_each_entry(w, &card->widgets, list) {
535 w->new_power = w->power;
536 w->power_checked = false;
540 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
542 if (!dapm->component)
544 return dapm->component->name_prefix;
547 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
550 if (!dapm->component)
552 return snd_soc_component_read(dapm->component, reg, value);
555 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
556 int reg, unsigned int mask, unsigned int value)
558 if (!dapm->component)
560 return snd_soc_component_update_bits(dapm->component, reg,
564 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
565 int reg, unsigned int mask, unsigned int value)
567 if (!dapm->component)
569 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
572 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
575 snd_soc_component_async_complete(dapm->component);
578 static struct snd_soc_dapm_widget *
579 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
581 struct snd_soc_dapm_widget *w = wcache->widget;
582 struct list_head *wlist;
587 wlist = &w->dapm->card->widgets;
589 list_for_each_entry_from(w, wlist, list) {
590 if (!strcmp(name, w->name))
601 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
602 struct snd_soc_dapm_widget *w)
608 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
609 * @dapm: The DAPM context for which to set the level
610 * @level: The level to set
612 * Forces the DAPM bias level to a specific state. It will call the bias level
613 * callback of DAPM context with the specified level. This will even happen if
614 * the context is already at the same level. Furthermore it will not go through
615 * the normal bias level sequencing, meaning any intermediate states between the
616 * current and the target state will not be entered.
618 * Note that the change in bias level is only temporary and the next time
619 * snd_soc_dapm_sync() is called the state will be set to the level as
620 * determined by the DAPM core. The function is mainly intended to be used to
621 * used during probe or resume from suspend to power up the device so
622 * initialization can be done, before the DAPM core takes over.
624 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
625 enum snd_soc_bias_level level)
629 if (dapm->set_bias_level)
630 ret = dapm->set_bias_level(dapm, level);
633 dapm->bias_level = level;
637 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
640 * snd_soc_dapm_set_bias_level - set the bias level for the system
641 * @dapm: DAPM context
642 * @level: level to configure
644 * Configure the bias (power) levels for the SoC audio device.
646 * Returns 0 for success else error.
648 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
649 enum snd_soc_bias_level level)
651 struct snd_soc_card *card = dapm->card;
654 trace_snd_soc_bias_level_start(card, level);
656 if (card && card->set_bias_level)
657 ret = card->set_bias_level(card, dapm, level);
661 if (!card || dapm != &card->dapm)
662 ret = snd_soc_dapm_force_bias_level(dapm, level);
667 if (card && card->set_bias_level_post)
668 ret = card->set_bias_level_post(card, dapm, level);
670 trace_snd_soc_bias_level_done(card, level);
675 /* connect mux widget to its interconnecting audio paths */
676 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
677 struct snd_soc_dapm_path *path, const char *control_name,
678 struct snd_soc_dapm_widget *w)
680 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
681 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
682 unsigned int val, item;
685 if (e->reg != SND_SOC_NOPM) {
686 soc_dapm_read(dapm, e->reg, &val);
687 val = (val >> e->shift_l) & e->mask;
688 item = snd_soc_enum_val_to_item(e, val);
690 /* since a virtual mux has no backing registers to
691 * decide which path to connect, it will try to match
692 * with the first enumeration. This is to ensure
693 * that the default mux choice (the first) will be
694 * correctly powered up during initialization.
699 for (i = 0; i < e->items; i++) {
700 if (!(strcmp(control_name, e->texts[i]))) {
701 path->name = e->texts[i];
713 /* set up initial codec paths */
714 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
716 struct soc_mixer_control *mc = (struct soc_mixer_control *)
717 p->sink->kcontrol_news[i].private_value;
718 unsigned int reg = mc->reg;
719 unsigned int shift = mc->shift;
720 unsigned int max = mc->max;
721 unsigned int mask = (1 << fls(max)) - 1;
722 unsigned int invert = mc->invert;
725 if (reg != SND_SOC_NOPM) {
726 soc_dapm_read(p->sink->dapm, reg, &val);
727 val = (val >> shift) & mask;
736 /* connect mixer widget to its interconnecting audio paths */
737 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
738 struct snd_soc_dapm_path *path, const char *control_name)
742 /* search for mixer kcontrol */
743 for (i = 0; i < path->sink->num_kcontrols; i++) {
744 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
745 path->name = path->sink->kcontrol_news[i].name;
746 dapm_set_mixer_path_status(path, i);
753 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
754 struct snd_soc_dapm_widget *kcontrolw,
755 const struct snd_kcontrol_new *kcontrol_new,
756 struct snd_kcontrol **kcontrol)
758 struct snd_soc_dapm_widget *w;
763 list_for_each_entry(w, &dapm->card->widgets, list) {
764 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
766 for (i = 0; i < w->num_kcontrols; i++) {
767 if (&w->kcontrol_news[i] == kcontrol_new) {
769 *kcontrol = w->kcontrols[i];
779 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
780 * create it. Either way, add the widget into the control's widget list
782 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
785 struct snd_soc_dapm_context *dapm = w->dapm;
786 struct snd_card *card = dapm->card->snd_card;
790 struct snd_kcontrol *kcontrol;
791 bool wname_in_long_name, kcname_in_long_name;
792 char *long_name = NULL;
796 prefix = soc_dapm_prefix(dapm);
798 prefix_len = strlen(prefix) + 1;
802 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
807 wname_in_long_name = false;
808 kcname_in_long_name = true;
811 case snd_soc_dapm_switch:
812 case snd_soc_dapm_mixer:
813 case snd_soc_dapm_pga:
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 snd_soc_dapm_widget_for_each_source_path(w, path) {
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_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 enum snd_soc_dapm_direction dir;
927 struct snd_soc_dapm_path *path;
932 case snd_soc_dapm_mux:
933 dir = SND_SOC_DAPM_DIR_OUT;
936 case snd_soc_dapm_demux:
937 dir = SND_SOC_DAPM_DIR_IN;
944 if (w->num_kcontrols != 1) {
946 "ASoC: %s %s has incorrect number of controls\n", type,
951 if (list_empty(&w->edges[dir])) {
952 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
956 ret = dapm_create_or_share_kcontrol(w, 0);
960 snd_soc_dapm_widget_for_each_path(w, dir, path) {
962 dapm_kcontrol_add_path(w->kcontrols[0], path);
968 /* create new dapm volume control */
969 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
973 for (i = 0; i < w->num_kcontrols; i++) {
974 ret = dapm_create_or_share_kcontrol(w, i);
982 /* create new dapm dai link control */
983 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
986 struct snd_kcontrol *kcontrol;
987 struct snd_soc_dapm_context *dapm = w->dapm;
988 struct snd_card *card = dapm->card->snd_card;
990 /* create control for links with > 1 config */
991 if (w->num_params <= 1)
995 for (i = 0; i < w->num_kcontrols; i++) {
996 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
998 ret = snd_ctl_add(card, kcontrol);
1001 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1002 w->name, w->kcontrol_news[i].name, ret);
1005 kcontrol->private_data = w;
1006 w->kcontrols[i] = kcontrol;
1012 /* We implement power down on suspend by checking the power state of
1013 * the ALSA card - when we are suspending the ALSA state for the card
1016 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1018 int level = snd_power_get_state(widget->dapm->card->snd_card);
1021 case SNDRV_CTL_POWER_D3hot:
1022 case SNDRV_CTL_POWER_D3cold:
1023 if (widget->ignore_suspend)
1024 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1026 return widget->ignore_suspend;
1032 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1033 struct list_head *widgets)
1035 struct snd_soc_dapm_widget *w;
1036 struct list_head *it;
1037 unsigned int size = 0;
1040 list_for_each(it, widgets)
1043 *list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL);
1047 list_for_each_entry(w, widgets, work_list)
1048 (*list)->widgets[i++] = w;
1050 (*list)->num_widgets = i;
1056 * Common implementation for is_connected_output_ep() and
1057 * is_connected_input_ep(). The function is inlined since the combined size of
1058 * the two specialized functions is only marginally larger then the size of the
1059 * generic function and at the same time the fast path of the specialized
1060 * functions is significantly smaller than the generic function.
1062 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1063 struct list_head *list, enum snd_soc_dapm_direction dir,
1064 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *))
1066 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1067 struct snd_soc_dapm_path *path;
1070 if (widget->endpoints[dir] >= 0)
1071 return widget->endpoints[dir];
1073 DAPM_UPDATE_STAT(widget, path_checks);
1075 /* do we need to add this widget to the list ? */
1077 list_add_tail(&widget->work_list, list);
1079 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1080 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1081 return widget->endpoints[dir];
1084 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1085 DAPM_UPDATE_STAT(widget, neighbour_checks);
1087 if (path->weak || path->is_supply)
1093 trace_snd_soc_dapm_path(widget, dir, path);
1095 if (path->connect) {
1097 con += fn(path->node[dir], list);
1102 widget->endpoints[dir] = con;
1108 * Recursively check for a completed path to an active or physically connected
1109 * output widget. Returns number of complete paths.
1111 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1112 struct list_head *list)
1114 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1115 is_connected_output_ep);
1119 * Recursively check for a completed path to an active or physically connected
1120 * input widget. Returns number of complete paths.
1122 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1123 struct list_head *list)
1125 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1126 is_connected_input_ep);
1130 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1131 * @dai: the soc DAI.
1132 * @stream: stream direction.
1133 * @list: list of active widgets for this stream.
1135 * Queries DAPM graph as to whether an valid audio stream path exists for
1136 * the initial stream specified by name. This takes into account
1137 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1139 * Returns the number of valid paths or negative error.
1141 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1142 struct snd_soc_dapm_widget_list **list)
1144 struct snd_soc_card *card = dai->component->card;
1145 struct snd_soc_dapm_widget *w;
1150 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1153 * For is_connected_{output,input}_ep fully discover the graph we need
1154 * to reset the cached number of inputs and outputs.
1156 list_for_each_entry(w, &card->widgets, list) {
1157 w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
1158 w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
1161 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1162 paths = is_connected_output_ep(dai->playback_widget, &widgets);
1164 paths = is_connected_input_ep(dai->capture_widget, &widgets);
1166 /* Drop starting point */
1167 list_del(widgets.next);
1169 ret = dapm_widget_list_create(list, &widgets);
1173 trace_snd_soc_dapm_connected(paths, stream);
1174 mutex_unlock(&card->dapm_mutex);
1180 * Handler for regulator supply widget.
1182 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1183 struct snd_kcontrol *kcontrol, int event)
1187 soc_dapm_async_complete(w->dapm);
1189 if (SND_SOC_DAPM_EVENT_ON(event)) {
1190 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1191 ret = regulator_allow_bypass(w->regulator, false);
1193 dev_warn(w->dapm->dev,
1194 "ASoC: Failed to unbypass %s: %d\n",
1198 return regulator_enable(w->regulator);
1200 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1201 ret = regulator_allow_bypass(w->regulator, true);
1203 dev_warn(w->dapm->dev,
1204 "ASoC: Failed to bypass %s: %d\n",
1208 return regulator_disable_deferred(w->regulator, w->shift);
1211 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1214 * Handler for clock supply widget.
1216 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1217 struct snd_kcontrol *kcontrol, int event)
1222 soc_dapm_async_complete(w->dapm);
1224 #ifdef CONFIG_HAVE_CLK
1225 if (SND_SOC_DAPM_EVENT_ON(event)) {
1226 return clk_prepare_enable(w->clk);
1228 clk_disable_unprepare(w->clk);
1234 EXPORT_SYMBOL_GPL(dapm_clock_event);
1236 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1238 if (w->power_checked)
1239 return w->new_power;
1244 w->new_power = w->power_check(w);
1246 w->power_checked = true;
1248 return w->new_power;
1251 /* Generic check to see if a widget should be powered.
1253 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1257 DAPM_UPDATE_STAT(w, power_checks);
1259 in = is_connected_input_ep(w, NULL);
1260 out = is_connected_output_ep(w, NULL);
1261 return out != 0 && in != 0;
1264 /* Check to see if a power supply is needed */
1265 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1267 struct snd_soc_dapm_path *path;
1269 DAPM_UPDATE_STAT(w, power_checks);
1271 /* Check if one of our outputs is connected */
1272 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1273 DAPM_UPDATE_STAT(w, neighbour_checks);
1278 if (path->connected &&
1279 !path->connected(path->source, path->sink))
1282 if (dapm_widget_power_check(path->sink))
1289 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1294 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1295 struct snd_soc_dapm_widget *b,
1303 sort = dapm_down_seq;
1305 if (sort[a->id] != sort[b->id])
1306 return sort[a->id] - sort[b->id];
1307 if (a->subseq != b->subseq) {
1309 return a->subseq - b->subseq;
1311 return b->subseq - a->subseq;
1313 if (a->reg != b->reg)
1314 return a->reg - b->reg;
1315 if (a->dapm != b->dapm)
1316 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1321 /* Insert a widget in order into a DAPM power sequence. */
1322 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1323 struct list_head *list,
1326 struct snd_soc_dapm_widget *w;
1328 list_for_each_entry(w, list, power_list)
1329 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1330 list_add_tail(&new_widget->power_list, &w->power_list);
1334 list_add_tail(&new_widget->power_list, list);
1337 static void dapm_seq_check_event(struct snd_soc_card *card,
1338 struct snd_soc_dapm_widget *w, int event)
1340 const char *ev_name;
1344 case SND_SOC_DAPM_PRE_PMU:
1345 ev_name = "PRE_PMU";
1348 case SND_SOC_DAPM_POST_PMU:
1349 ev_name = "POST_PMU";
1352 case SND_SOC_DAPM_PRE_PMD:
1353 ev_name = "PRE_PMD";
1356 case SND_SOC_DAPM_POST_PMD:
1357 ev_name = "POST_PMD";
1360 case SND_SOC_DAPM_WILL_PMU:
1361 ev_name = "WILL_PMU";
1364 case SND_SOC_DAPM_WILL_PMD:
1365 ev_name = "WILL_PMD";
1369 WARN(1, "Unknown event %d\n", event);
1373 if (w->new_power != power)
1376 if (w->event && (w->event_flags & event)) {
1377 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1379 soc_dapm_async_complete(w->dapm);
1380 trace_snd_soc_dapm_widget_event_start(w, event);
1381 ret = w->event(w, NULL, event);
1382 trace_snd_soc_dapm_widget_event_done(w, event);
1384 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1385 ev_name, w->name, ret);
1389 /* Apply the coalesced changes from a DAPM sequence */
1390 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1391 struct list_head *pending)
1393 struct snd_soc_dapm_context *dapm;
1394 struct snd_soc_dapm_widget *w;
1396 unsigned int value = 0;
1397 unsigned int mask = 0;
1399 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1403 list_for_each_entry(w, pending, power_list) {
1404 WARN_ON(reg != w->reg || dapm != w->dapm);
1405 w->power = w->new_power;
1407 mask |= w->mask << w->shift;
1409 value |= w->on_val << w->shift;
1411 value |= w->off_val << w->shift;
1413 pop_dbg(dapm->dev, card->pop_time,
1414 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1415 w->name, reg, value, mask);
1417 /* Check for events */
1418 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1419 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1423 /* Any widget will do, they should all be updating the
1427 pop_dbg(dapm->dev, card->pop_time,
1428 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1429 value, mask, reg, card->pop_time);
1430 pop_wait(card->pop_time);
1431 soc_dapm_update_bits(dapm, reg, mask, value);
1434 list_for_each_entry(w, pending, power_list) {
1435 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1436 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1440 /* Apply a DAPM power sequence.
1442 * We walk over a pre-sorted list of widgets to apply power to. In
1443 * order to minimise the number of writes to the device required
1444 * multiple widgets will be updated in a single write where possible.
1445 * Currently anything that requires more than a single write is not
1448 static void dapm_seq_run(struct snd_soc_card *card,
1449 struct list_head *list, int event, bool power_up)
1451 struct snd_soc_dapm_widget *w, *n;
1452 struct snd_soc_dapm_context *d;
1455 int cur_subseq = -1;
1456 int cur_reg = SND_SOC_NOPM;
1457 struct snd_soc_dapm_context *cur_dapm = NULL;
1464 sort = dapm_down_seq;
1466 list_for_each_entry_safe(w, n, list, power_list) {
1469 /* Do we need to apply any queued changes? */
1470 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1471 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1472 if (!list_empty(&pending))
1473 dapm_seq_run_coalesced(card, &pending);
1475 if (cur_dapm && cur_dapm->seq_notifier) {
1476 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1477 if (sort[i] == cur_sort)
1478 cur_dapm->seq_notifier(cur_dapm,
1483 if (cur_dapm && w->dapm != cur_dapm)
1484 soc_dapm_async_complete(cur_dapm);
1486 INIT_LIST_HEAD(&pending);
1488 cur_subseq = INT_MIN;
1489 cur_reg = SND_SOC_NOPM;
1494 case snd_soc_dapm_pre:
1496 list_for_each_entry_safe_continue(w, n, list,
1499 if (event == SND_SOC_DAPM_STREAM_START)
1501 NULL, SND_SOC_DAPM_PRE_PMU);
1502 else if (event == SND_SOC_DAPM_STREAM_STOP)
1504 NULL, SND_SOC_DAPM_PRE_PMD);
1507 case snd_soc_dapm_post:
1509 list_for_each_entry_safe_continue(w, n, list,
1512 if (event == SND_SOC_DAPM_STREAM_START)
1514 NULL, SND_SOC_DAPM_POST_PMU);
1515 else if (event == SND_SOC_DAPM_STREAM_STOP)
1517 NULL, SND_SOC_DAPM_POST_PMD);
1521 /* Queue it up for application */
1522 cur_sort = sort[w->id];
1523 cur_subseq = w->subseq;
1526 list_move(&w->power_list, &pending);
1531 dev_err(w->dapm->dev,
1532 "ASoC: Failed to apply widget power: %d\n", ret);
1535 if (!list_empty(&pending))
1536 dapm_seq_run_coalesced(card, &pending);
1538 if (cur_dapm && cur_dapm->seq_notifier) {
1539 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1540 if (sort[i] == cur_sort)
1541 cur_dapm->seq_notifier(cur_dapm,
1545 list_for_each_entry(d, &card->dapm_list, list) {
1546 soc_dapm_async_complete(d);
1550 static void dapm_widget_update(struct snd_soc_card *card)
1552 struct snd_soc_dapm_update *update = card->update;
1553 struct snd_soc_dapm_widget_list *wlist;
1554 struct snd_soc_dapm_widget *w = NULL;
1558 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1561 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1563 for (wi = 0; wi < wlist->num_widgets; wi++) {
1564 w = wlist->widgets[wi];
1566 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1567 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1569 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1577 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1580 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1583 for (wi = 0; wi < wlist->num_widgets; wi++) {
1584 w = wlist->widgets[wi];
1586 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1587 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1589 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1595 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1596 * they're changing state.
1598 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1600 struct snd_soc_dapm_context *d = data;
1603 /* If we're off and we're not supposed to be go into STANDBY */
1604 if (d->bias_level == SND_SOC_BIAS_OFF &&
1605 d->target_bias_level != SND_SOC_BIAS_OFF) {
1607 pm_runtime_get_sync(d->dev);
1609 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1612 "ASoC: Failed to turn on bias: %d\n", ret);
1615 /* Prepare for a transition to ON or away from ON */
1616 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1617 d->bias_level != SND_SOC_BIAS_ON) ||
1618 (d->target_bias_level != SND_SOC_BIAS_ON &&
1619 d->bias_level == SND_SOC_BIAS_ON)) {
1620 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1623 "ASoC: Failed to prepare bias: %d\n", ret);
1627 /* Async callback run prior to DAPM sequences - brings to their final
1630 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1632 struct snd_soc_dapm_context *d = data;
1635 /* If we just powered the last thing off drop to standby bias */
1636 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1637 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1638 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1639 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1641 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1645 /* If we're in standby and can support bias off then do that */
1646 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1647 d->target_bias_level == SND_SOC_BIAS_OFF) {
1648 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1650 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1654 pm_runtime_put(d->dev);
1657 /* If we just powered up then move to active bias */
1658 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1659 d->target_bias_level == SND_SOC_BIAS_ON) {
1660 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1662 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1667 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1668 bool power, bool connect)
1670 /* If a connection is being made or broken then that update
1671 * will have marked the peer dirty, otherwise the widgets are
1672 * not connected and this update has no impact. */
1676 /* If the peer is already in the state we're moving to then we
1677 * won't have an impact on it. */
1678 if (power != peer->power)
1679 dapm_mark_dirty(peer, "peer state change");
1682 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1683 struct list_head *up_list,
1684 struct list_head *down_list)
1686 struct snd_soc_dapm_path *path;
1688 if (w->power == power)
1691 trace_snd_soc_dapm_widget_power(w, power);
1693 /* If we changed our power state perhaps our neigbours changed
1696 snd_soc_dapm_widget_for_each_source_path(w, path)
1697 dapm_widget_set_peer_power(path->source, power, path->connect);
1699 /* Supplies can't affect their outputs, only their inputs */
1700 if (!w->is_supply) {
1701 snd_soc_dapm_widget_for_each_sink_path(w, path)
1702 dapm_widget_set_peer_power(path->sink, power,
1707 dapm_seq_insert(w, up_list, true);
1709 dapm_seq_insert(w, down_list, false);
1712 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1713 struct list_head *up_list,
1714 struct list_head *down_list)
1719 case snd_soc_dapm_pre:
1720 dapm_seq_insert(w, down_list, false);
1722 case snd_soc_dapm_post:
1723 dapm_seq_insert(w, up_list, true);
1727 power = dapm_widget_power_check(w);
1729 dapm_widget_set_power(w, power, up_list, down_list);
1734 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1736 if (dapm->idle_bias_off)
1739 switch (snd_power_get_state(dapm->card->snd_card)) {
1740 case SNDRV_CTL_POWER_D3hot:
1741 case SNDRV_CTL_POWER_D3cold:
1742 return dapm->suspend_bias_off;
1751 * Scan each dapm widget for complete audio path.
1752 * A complete path is a route that has valid endpoints i.e.:-
1754 * o DAC to output pin.
1755 * o Input Pin to ADC.
1756 * o Input pin to Output pin (bypass, sidetone)
1757 * o DAC to ADC (loopback).
1759 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1761 struct snd_soc_dapm_widget *w;
1762 struct snd_soc_dapm_context *d;
1764 LIST_HEAD(down_list);
1765 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1766 enum snd_soc_bias_level bias;
1768 lockdep_assert_held(&card->dapm_mutex);
1770 trace_snd_soc_dapm_start(card);
1772 list_for_each_entry(d, &card->dapm_list, list) {
1773 if (dapm_idle_bias_off(d))
1774 d->target_bias_level = SND_SOC_BIAS_OFF;
1776 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1781 /* Check which widgets we need to power and store them in
1782 * lists indicating if they should be powered up or down. We
1783 * only check widgets that have been flagged as dirty but note
1784 * that new widgets may be added to the dirty list while we
1787 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1788 dapm_power_one_widget(w, &up_list, &down_list);
1791 list_for_each_entry(w, &card->widgets, list) {
1793 case snd_soc_dapm_pre:
1794 case snd_soc_dapm_post:
1795 /* These widgets always need to be powered */
1798 list_del_init(&w->dirty);
1805 /* Supplies and micbiases only bring the
1806 * context up to STANDBY as unless something
1807 * else is active and passing audio they
1808 * generally don't require full power. Signal
1809 * generators are virtual pins and have no
1810 * power impact themselves.
1813 case snd_soc_dapm_siggen:
1814 case snd_soc_dapm_vmid:
1816 case snd_soc_dapm_supply:
1817 case snd_soc_dapm_regulator_supply:
1818 case snd_soc_dapm_clock_supply:
1819 case snd_soc_dapm_micbias:
1820 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1821 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1824 d->target_bias_level = SND_SOC_BIAS_ON;
1831 /* Force all contexts in the card to the same bias state if
1832 * they're not ground referenced.
1834 bias = SND_SOC_BIAS_OFF;
1835 list_for_each_entry(d, &card->dapm_list, list)
1836 if (d->target_bias_level > bias)
1837 bias = d->target_bias_level;
1838 list_for_each_entry(d, &card->dapm_list, list)
1839 if (!dapm_idle_bias_off(d))
1840 d->target_bias_level = bias;
1842 trace_snd_soc_dapm_walk_done(card);
1844 /* Run card bias changes at first */
1845 dapm_pre_sequence_async(&card->dapm, 0);
1846 /* Run other bias changes in parallel */
1847 list_for_each_entry(d, &card->dapm_list, list) {
1848 if (d != &card->dapm)
1849 async_schedule_domain(dapm_pre_sequence_async, d,
1852 async_synchronize_full_domain(&async_domain);
1854 list_for_each_entry(w, &down_list, power_list) {
1855 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1858 list_for_each_entry(w, &up_list, power_list) {
1859 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1862 /* Power down widgets first; try to avoid amplifying pops. */
1863 dapm_seq_run(card, &down_list, event, false);
1865 dapm_widget_update(card);
1868 dapm_seq_run(card, &up_list, event, true);
1870 /* Run all the bias changes in parallel */
1871 list_for_each_entry(d, &card->dapm_list, list) {
1872 if (d != &card->dapm)
1873 async_schedule_domain(dapm_post_sequence_async, d,
1876 async_synchronize_full_domain(&async_domain);
1877 /* Run card bias changes at last */
1878 dapm_post_sequence_async(&card->dapm, 0);
1880 /* do we need to notify any clients that DAPM event is complete */
1881 list_for_each_entry(d, &card->dapm_list, list) {
1882 if (d->stream_event)
1883 d->stream_event(d, event);
1886 pop_dbg(card->dev, card->pop_time,
1887 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1888 pop_wait(card->pop_time);
1890 trace_snd_soc_dapm_done(card);
1895 #ifdef CONFIG_DEBUG_FS
1896 static ssize_t dapm_widget_power_read_file(struct file *file,
1897 char __user *user_buf,
1898 size_t count, loff_t *ppos)
1900 struct snd_soc_dapm_widget *w = file->private_data;
1901 struct snd_soc_card *card = w->dapm->card;
1902 enum snd_soc_dapm_direction dir, rdir;
1906 struct snd_soc_dapm_path *p = NULL;
1908 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1912 mutex_lock(&card->dapm_mutex);
1914 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1919 in = is_connected_input_ep(w, NULL);
1920 out = is_connected_output_ep(w, NULL);
1923 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1924 w->name, w->power ? "On" : "Off",
1925 w->force ? " (forced)" : "", in, out);
1928 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1929 " - R%d(0x%x) mask 0x%x",
1930 w->reg, w->reg, w->mask << w->shift);
1932 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1935 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1937 w->active ? "active" : "inactive");
1939 snd_soc_dapm_for_each_direction(dir) {
1940 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1941 snd_soc_dapm_widget_for_each_path(w, dir, p) {
1942 if (p->connected && !p->connected(w, p->node[rdir]))
1948 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1949 " %s \"%s\" \"%s\"\n",
1950 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
1951 p->name ? p->name : "static",
1952 p->node[rdir]->name);
1956 mutex_unlock(&card->dapm_mutex);
1958 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1964 static const struct file_operations dapm_widget_power_fops = {
1965 .open = simple_open,
1966 .read = dapm_widget_power_read_file,
1967 .llseek = default_llseek,
1970 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1971 size_t count, loff_t *ppos)
1973 struct snd_soc_dapm_context *dapm = file->private_data;
1976 switch (dapm->bias_level) {
1977 case SND_SOC_BIAS_ON:
1980 case SND_SOC_BIAS_PREPARE:
1981 level = "Prepare\n";
1983 case SND_SOC_BIAS_STANDBY:
1984 level = "Standby\n";
1986 case SND_SOC_BIAS_OFF:
1990 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
1991 level = "Unknown\n";
1995 return simple_read_from_buffer(user_buf, count, ppos, level,
1999 static const struct file_operations dapm_bias_fops = {
2000 .open = simple_open,
2001 .read = dapm_bias_read_file,
2002 .llseek = default_llseek,
2005 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2006 struct dentry *parent)
2013 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2015 if (!dapm->debugfs_dapm) {
2017 "ASoC: Failed to create DAPM debugfs directory\n");
2021 d = debugfs_create_file("bias_level", 0444,
2022 dapm->debugfs_dapm, dapm,
2026 "ASoC: Failed to create bias level debugfs file\n");
2029 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2031 struct snd_soc_dapm_context *dapm = w->dapm;
2034 if (!dapm->debugfs_dapm || !w->name)
2037 d = debugfs_create_file(w->name, 0444,
2038 dapm->debugfs_dapm, w,
2039 &dapm_widget_power_fops);
2041 dev_warn(w->dapm->dev,
2042 "ASoC: Failed to create %s debugfs file\n",
2046 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2048 debugfs_remove_recursive(dapm->debugfs_dapm);
2052 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2053 struct dentry *parent)
2057 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2061 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2068 * soc_dapm_connect_path() - Connects or disconnects a path
2069 * @path: The path to update
2070 * @connect: The new connect state of the path. True if the path is connected,
2071 * false if it is disconneted.
2072 * @reason: The reason why the path changed (for debugging only)
2074 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2075 bool connect, const char *reason)
2077 if (path->connect == connect)
2080 path->connect = connect;
2081 dapm_mark_dirty(path->source, reason);
2082 dapm_mark_dirty(path->sink, reason);
2083 dapm_path_invalidate(path);
2086 /* test and update the power status of a mux widget */
2087 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2088 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2090 struct snd_soc_dapm_path *path;
2094 lockdep_assert_held(&card->dapm_mutex);
2096 /* find dapm widget path assoc with kcontrol */
2097 dapm_kcontrol_for_each_path(path, kcontrol) {
2099 /* we now need to match the string in the enum to the path */
2100 if (!(strcmp(path->name, e->texts[mux])))
2105 soc_dapm_connect_path(path, connect, "mux update");
2109 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2114 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2115 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2116 struct snd_soc_dapm_update *update)
2118 struct snd_soc_card *card = dapm->card;
2121 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2122 card->update = update;
2123 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2124 card->update = NULL;
2125 mutex_unlock(&card->dapm_mutex);
2127 soc_dpcm_runtime_update(card);
2130 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2132 /* test and update the power status of a mixer or switch widget */
2133 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2134 struct snd_kcontrol *kcontrol, int connect)
2136 struct snd_soc_dapm_path *path;
2139 lockdep_assert_held(&card->dapm_mutex);
2141 /* find dapm widget path assoc with kcontrol */
2142 dapm_kcontrol_for_each_path(path, kcontrol) {
2144 soc_dapm_connect_path(path, connect, "mixer update");
2148 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2153 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2154 struct snd_kcontrol *kcontrol, int connect,
2155 struct snd_soc_dapm_update *update)
2157 struct snd_soc_card *card = dapm->card;
2160 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2161 card->update = update;
2162 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2163 card->update = NULL;
2164 mutex_unlock(&card->dapm_mutex);
2166 soc_dpcm_runtime_update(card);
2169 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2171 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2174 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2175 struct snd_soc_dapm_widget *w;
2177 char *state = "not set";
2179 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2180 if (w->dapm != dapm)
2183 /* only display widgets that burnm power */
2185 case snd_soc_dapm_hp:
2186 case snd_soc_dapm_mic:
2187 case snd_soc_dapm_spk:
2188 case snd_soc_dapm_line:
2189 case snd_soc_dapm_micbias:
2190 case snd_soc_dapm_dac:
2191 case snd_soc_dapm_adc:
2192 case snd_soc_dapm_pga:
2193 case snd_soc_dapm_out_drv:
2194 case snd_soc_dapm_mixer:
2195 case snd_soc_dapm_mixer_named_ctl:
2196 case snd_soc_dapm_supply:
2197 case snd_soc_dapm_regulator_supply:
2198 case snd_soc_dapm_clock_supply:
2200 count += sprintf(buf + count, "%s: %s\n",
2201 w->name, w->power ? "On":"Off");
2208 switch (snd_soc_dapm_get_bias_level(dapm)) {
2209 case SND_SOC_BIAS_ON:
2212 case SND_SOC_BIAS_PREPARE:
2215 case SND_SOC_BIAS_STANDBY:
2218 case SND_SOC_BIAS_OFF:
2222 count += sprintf(buf + count, "PM State: %s\n", state);
2227 /* show dapm widget status in sys fs */
2228 static ssize_t dapm_widget_show(struct device *dev,
2229 struct device_attribute *attr, char *buf)
2231 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2234 mutex_lock(&rtd->card->dapm_mutex);
2236 for (i = 0; i < rtd->num_codecs; i++) {
2237 struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;
2239 count += dapm_widget_show_component(cmpnt, buf + count);
2242 mutex_unlock(&rtd->card->dapm_mutex);
2247 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2249 struct attribute *soc_dapm_dev_attrs[] = {
2250 &dev_attr_dapm_widget.attr,
2254 static void dapm_free_path(struct snd_soc_dapm_path *path)
2256 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2257 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2258 list_del(&path->list_kcontrol);
2259 list_del(&path->list);
2263 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2265 struct snd_soc_dapm_path *p, *next_p;
2266 enum snd_soc_dapm_direction dir;
2270 * remove source and sink paths associated to this widget.
2271 * While removing the path, remove reference to it from both
2272 * source and sink widgets so that path is removed only once.
2274 snd_soc_dapm_for_each_direction(dir) {
2275 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2279 kfree(w->kcontrols);
2280 kfree_const(w->name);
2284 /* free all dapm widgets and resources */
2285 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2287 struct snd_soc_dapm_widget *w, *next_w;
2289 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2290 if (w->dapm != dapm)
2292 snd_soc_dapm_free_widget(w);
2296 static struct snd_soc_dapm_widget *dapm_find_widget(
2297 struct snd_soc_dapm_context *dapm, const char *pin,
2298 bool search_other_contexts)
2300 struct snd_soc_dapm_widget *w;
2301 struct snd_soc_dapm_widget *fallback = NULL;
2303 list_for_each_entry(w, &dapm->card->widgets, list) {
2304 if (!strcmp(w->name, pin)) {
2305 if (w->dapm == dapm)
2312 if (search_other_contexts)
2318 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2319 const char *pin, int status)
2321 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2323 dapm_assert_locked(dapm);
2326 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2330 if (w->connected != status) {
2331 dapm_mark_dirty(w, "pin configuration");
2332 dapm_widget_invalidate_input_paths(w);
2333 dapm_widget_invalidate_output_paths(w);
2336 w->connected = status;
2344 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2345 * @dapm: DAPM context
2347 * Walks all dapm audio paths and powers widgets according to their
2348 * stream or path usage.
2350 * Requires external locking.
2352 * Returns 0 for success.
2354 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2357 * Suppress early reports (eg, jacks syncing their state) to avoid
2358 * silly DAPM runs during card startup.
2360 if (!dapm->card || !dapm->card->instantiated)
2363 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2365 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2368 * snd_soc_dapm_sync - scan and power dapm paths
2369 * @dapm: DAPM context
2371 * Walks all dapm audio paths and powers widgets according to their
2372 * stream or path usage.
2374 * Returns 0 for success.
2376 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2380 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2381 ret = snd_soc_dapm_sync_unlocked(dapm);
2382 mutex_unlock(&dapm->card->dapm_mutex);
2385 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2388 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2389 * @w: The widget for which to update the flags
2391 * Some widgets have a dynamic category which depends on which neighbors they
2392 * are connected to. This function update the category for these widgets.
2394 * This function must be called whenever a path is added or removed to a widget.
2396 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2398 enum snd_soc_dapm_direction dir;
2399 struct snd_soc_dapm_path *p;
2403 case snd_soc_dapm_input:
2404 /* On a fully routed card a input is never a source */
2405 if (w->dapm->card->fully_routed)
2407 ep = SND_SOC_DAPM_EP_SOURCE;
2408 snd_soc_dapm_widget_for_each_source_path(w, p) {
2409 if (p->source->id == snd_soc_dapm_micbias ||
2410 p->source->id == snd_soc_dapm_mic ||
2411 p->source->id == snd_soc_dapm_line ||
2412 p->source->id == snd_soc_dapm_output) {
2418 case snd_soc_dapm_output:
2419 /* On a fully routed card a output is never a sink */
2420 if (w->dapm->card->fully_routed)
2422 ep = SND_SOC_DAPM_EP_SINK;
2423 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2424 if (p->sink->id == snd_soc_dapm_spk ||
2425 p->sink->id == snd_soc_dapm_hp ||
2426 p->sink->id == snd_soc_dapm_line ||
2427 p->sink->id == snd_soc_dapm_input) {
2433 case snd_soc_dapm_line:
2435 snd_soc_dapm_for_each_direction(dir) {
2436 if (!list_empty(&w->edges[dir]))
2437 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2447 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2448 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2449 const char *control)
2451 bool dynamic_source = false;
2452 bool dynamic_sink = false;
2457 switch (source->id) {
2458 case snd_soc_dapm_demux:
2459 dynamic_source = true;
2466 case snd_soc_dapm_mux:
2467 case snd_soc_dapm_switch:
2468 case snd_soc_dapm_mixer:
2469 case snd_soc_dapm_mixer_named_ctl:
2470 dynamic_sink = true;
2476 if (dynamic_source && dynamic_sink) {
2478 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2479 source->name, control, sink->name);
2481 } else if (!dynamic_source && !dynamic_sink) {
2483 "Control not supported for path %s -> [%s] -> %s\n",
2484 source->name, control, sink->name);
2491 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2492 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2493 const char *control,
2494 int (*connected)(struct snd_soc_dapm_widget *source,
2495 struct snd_soc_dapm_widget *sink))
2497 struct snd_soc_dapm_widget *widgets[2];
2498 enum snd_soc_dapm_direction dir;
2499 struct snd_soc_dapm_path *path;
2502 if (wsink->is_supply && !wsource->is_supply) {
2504 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2505 wsource->name, wsink->name);
2509 if (connected && !wsource->is_supply) {
2511 "connected() callback only supported for supply widgets (%s -> %s)\n",
2512 wsource->name, wsink->name);
2516 if (wsource->is_supply && control) {
2518 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2519 wsource->name, control, wsink->name);
2523 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2527 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2531 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2532 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2533 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2534 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2536 path->connected = connected;
2537 INIT_LIST_HEAD(&path->list);
2538 INIT_LIST_HEAD(&path->list_kcontrol);
2540 if (wsource->is_supply || wsink->is_supply)
2541 path->is_supply = 1;
2543 /* connect static paths */
2544 if (control == NULL) {
2547 switch (wsource->id) {
2548 case snd_soc_dapm_demux:
2549 ret = dapm_connect_mux(dapm, path, control, wsource);
2557 switch (wsink->id) {
2558 case snd_soc_dapm_mux:
2559 ret = dapm_connect_mux(dapm, path, control, wsink);
2563 case snd_soc_dapm_switch:
2564 case snd_soc_dapm_mixer:
2565 case snd_soc_dapm_mixer_named_ctl:
2566 ret = dapm_connect_mixer(dapm, path, control);
2575 list_add(&path->list, &dapm->card->paths);
2576 snd_soc_dapm_for_each_direction(dir)
2577 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2579 snd_soc_dapm_for_each_direction(dir) {
2580 dapm_update_widget_flags(widgets[dir]);
2581 dapm_mark_dirty(widgets[dir], "Route added");
2584 if (dapm->card->instantiated && path->connect)
2585 dapm_path_invalidate(path);
2593 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2594 const struct snd_soc_dapm_route *route)
2596 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2597 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2600 char prefixed_sink[80];
2601 char prefixed_source[80];
2605 prefix = soc_dapm_prefix(dapm);
2607 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2608 prefix, route->sink);
2609 sink = prefixed_sink;
2610 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2611 prefix, route->source);
2612 source = prefixed_source;
2615 source = route->source;
2618 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2619 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2621 if (wsink && wsource)
2625 * find src and dest widgets over all widgets but favor a widget from
2626 * current DAPM context
2628 list_for_each_entry(w, &dapm->card->widgets, list) {
2629 if (!wsink && !(strcmp(w->name, sink))) {
2631 if (w->dapm == dapm) {
2638 if (!wsource && !(strcmp(w->name, source))) {
2640 if (w->dapm == dapm) {
2647 /* use widget from another DAPM context if not found from this */
2653 if (wsource == NULL) {
2654 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2658 if (wsink == NULL) {
2659 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2665 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2666 dapm_wcache_update(&dapm->path_source_cache, wsource);
2668 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2675 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2676 source, route->control, sink);
2680 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2681 const struct snd_soc_dapm_route *route)
2683 struct snd_soc_dapm_widget *wsource, *wsink;
2684 struct snd_soc_dapm_path *path, *p;
2687 char prefixed_sink[80];
2688 char prefixed_source[80];
2691 if (route->control) {
2693 "ASoC: Removal of routes with controls not supported\n");
2697 prefix = soc_dapm_prefix(dapm);
2699 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2700 prefix, route->sink);
2701 sink = prefixed_sink;
2702 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2703 prefix, route->source);
2704 source = prefixed_source;
2707 source = route->source;
2711 list_for_each_entry(p, &dapm->card->paths, list) {
2712 if (strcmp(p->source->name, source) != 0)
2714 if (strcmp(p->sink->name, sink) != 0)
2721 wsource = path->source;
2724 dapm_mark_dirty(wsource, "Route removed");
2725 dapm_mark_dirty(wsink, "Route removed");
2727 dapm_path_invalidate(path);
2729 dapm_free_path(path);
2731 /* Update any path related flags */
2732 dapm_update_widget_flags(wsource);
2733 dapm_update_widget_flags(wsink);
2735 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2743 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2744 * @dapm: DAPM context
2745 * @route: audio routes
2746 * @num: number of routes
2748 * Connects 2 dapm widgets together via a named audio path. The sink is
2749 * the widget receiving the audio signal, whilst the source is the sender
2750 * of the audio signal.
2752 * Returns 0 for success else error. On error all resources can be freed
2753 * with a call to snd_soc_card_free().
2755 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2756 const struct snd_soc_dapm_route *route, int num)
2760 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2761 for (i = 0; i < num; i++) {
2762 r = snd_soc_dapm_add_route(dapm, route);
2764 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2766 route->control ? route->control : "direct",
2772 mutex_unlock(&dapm->card->dapm_mutex);
2776 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2779 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2780 * @dapm: DAPM context
2781 * @route: audio routes
2782 * @num: number of routes
2784 * Removes routes from the DAPM context.
2786 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2787 const struct snd_soc_dapm_route *route, int num)
2791 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2792 for (i = 0; i < num; i++) {
2793 snd_soc_dapm_del_route(dapm, route);
2796 mutex_unlock(&dapm->card->dapm_mutex);
2800 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2802 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2803 const struct snd_soc_dapm_route *route)
2805 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2808 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2811 struct snd_soc_dapm_path *path;
2815 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2821 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2826 if (route->control || route->connected)
2827 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2828 route->source, route->sink);
2830 snd_soc_dapm_widget_for_each_sink_path(source, path) {
2831 if (path->sink == sink) {
2838 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2839 route->source, route->sink);
2841 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2842 count, route->source, route->sink);
2848 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2849 * @dapm: DAPM context
2850 * @route: audio routes
2851 * @num: number of routes
2853 * Mark existing routes matching those specified in the passed array
2854 * as being weak, meaning that they are ignored for the purpose of
2855 * power decisions. The main intended use case is for sidetone paths
2856 * which couple audio between other independent paths if they are both
2857 * active in order to make the combination work better at the user
2858 * level but which aren't intended to be "used".
2860 * Note that CODEC drivers should not use this as sidetone type paths
2861 * can frequently also be used as bypass paths.
2863 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2864 const struct snd_soc_dapm_route *route, int num)
2869 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2870 for (i = 0; i < num; i++) {
2871 err = snd_soc_dapm_weak_route(dapm, route);
2876 mutex_unlock(&dapm->card->dapm_mutex);
2880 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2883 * snd_soc_dapm_new_widgets - add new dapm widgets
2884 * @card: card to be checked for new dapm widgets
2886 * Checks the codec for any new dapm widgets and creates them if found.
2888 * Returns 0 for success.
2890 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2892 struct snd_soc_dapm_widget *w;
2895 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2897 list_for_each_entry(w, &card->widgets, list)
2902 if (w->num_kcontrols) {
2903 w->kcontrols = kzalloc(w->num_kcontrols *
2904 sizeof(struct snd_kcontrol *),
2906 if (!w->kcontrols) {
2907 mutex_unlock(&card->dapm_mutex);
2913 case snd_soc_dapm_switch:
2914 case snd_soc_dapm_mixer:
2915 case snd_soc_dapm_mixer_named_ctl:
2918 case snd_soc_dapm_mux:
2919 case snd_soc_dapm_demux:
2922 case snd_soc_dapm_pga:
2923 case snd_soc_dapm_out_drv:
2926 case snd_soc_dapm_dai_link:
2927 dapm_new_dai_link(w);
2933 /* Read the initial power state from the device */
2935 soc_dapm_read(w->dapm, w->reg, &val);
2936 val = val >> w->shift;
2938 if (val == w->on_val)
2944 dapm_mark_dirty(w, "new widget");
2945 dapm_debugfs_add_widget(w);
2948 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2949 mutex_unlock(&card->dapm_mutex);
2952 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2955 * snd_soc_dapm_get_volsw - dapm mixer get callback
2956 * @kcontrol: mixer control
2957 * @ucontrol: control element information
2959 * Callback to get the value of a dapm mixer control.
2961 * Returns 0 for success.
2963 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2964 struct snd_ctl_elem_value *ucontrol)
2966 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2967 struct snd_soc_card *card = dapm->card;
2968 struct soc_mixer_control *mc =
2969 (struct soc_mixer_control *)kcontrol->private_value;
2971 unsigned int shift = mc->shift;
2973 unsigned int mask = (1 << fls(max)) - 1;
2974 unsigned int invert = mc->invert;
2978 if (snd_soc_volsw_is_stereo(mc))
2980 "ASoC: Control '%s' is stereo, which is not supported\n",
2983 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2984 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
2985 ret = soc_dapm_read(dapm, reg, &val);
2986 val = (val >> shift) & mask;
2988 val = dapm_kcontrol_get_value(kcontrol);
2990 mutex_unlock(&card->dapm_mutex);
2993 ucontrol->value.integer.value[0] = max - val;
2995 ucontrol->value.integer.value[0] = val;
2999 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3002 * snd_soc_dapm_put_volsw - dapm mixer set callback
3003 * @kcontrol: mixer control
3004 * @ucontrol: control element information
3006 * Callback to set the value of a dapm mixer control.
3008 * Returns 0 for success.
3010 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3011 struct snd_ctl_elem_value *ucontrol)
3013 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3014 struct snd_soc_card *card = dapm->card;
3015 struct soc_mixer_control *mc =
3016 (struct soc_mixer_control *)kcontrol->private_value;
3018 unsigned int shift = mc->shift;
3020 unsigned int mask = (1 << fls(max)) - 1;
3021 unsigned int invert = mc->invert;
3023 int connect, change, reg_change = 0;
3024 struct snd_soc_dapm_update update;
3027 if (snd_soc_volsw_is_stereo(mc))
3029 "ASoC: Control '%s' is stereo, which is not supported\n",
3032 val = (ucontrol->value.integer.value[0] & mask);
3038 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3040 change = dapm_kcontrol_set_value(kcontrol, val);
3042 if (reg != SND_SOC_NOPM) {
3043 mask = mask << shift;
3046 reg_change = soc_dapm_test_bits(dapm, reg, mask, val);
3049 if (change || reg_change) {
3051 update.kcontrol = kcontrol;
3055 card->update = &update;
3057 change |= reg_change;
3059 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
3061 card->update = NULL;
3064 mutex_unlock(&card->dapm_mutex);
3067 soc_dpcm_runtime_update(card);
3071 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3074 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3075 * @kcontrol: mixer control
3076 * @ucontrol: control element information
3078 * Callback to get the value of a dapm enumerated double mixer control.
3080 * Returns 0 for success.
3082 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3083 struct snd_ctl_elem_value *ucontrol)
3085 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3086 struct snd_soc_card *card = dapm->card;
3087 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3088 unsigned int reg_val, val;
3090 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3091 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3092 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3094 mutex_unlock(&card->dapm_mutex);
3098 reg_val = dapm_kcontrol_get_value(kcontrol);
3100 mutex_unlock(&card->dapm_mutex);
3102 val = (reg_val >> e->shift_l) & e->mask;
3103 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3104 if (e->shift_l != e->shift_r) {
3105 val = (reg_val >> e->shift_r) & e->mask;
3106 val = snd_soc_enum_val_to_item(e, val);
3107 ucontrol->value.enumerated.item[1] = val;
3112 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3115 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3116 * @kcontrol: mixer control
3117 * @ucontrol: control element information
3119 * Callback to set the value of a dapm enumerated double mixer control.
3121 * Returns 0 for success.
3123 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3124 struct snd_ctl_elem_value *ucontrol)
3126 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3127 struct snd_soc_card *card = dapm->card;
3128 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3129 unsigned int *item = ucontrol->value.enumerated.item;
3130 unsigned int val, change, reg_change = 0;
3132 struct snd_soc_dapm_update update;
3135 if (item[0] >= e->items)
3138 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3139 mask = e->mask << e->shift_l;
3140 if (e->shift_l != e->shift_r) {
3141 if (item[1] > e->items)
3143 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
3144 mask |= e->mask << e->shift_r;
3147 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3149 change = dapm_kcontrol_set_value(kcontrol, val);
3151 if (e->reg != SND_SOC_NOPM)
3152 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3154 if (change || reg_change) {
3156 update.kcontrol = kcontrol;
3157 update.reg = e->reg;
3160 card->update = &update;
3162 change |= reg_change;
3164 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3166 card->update = NULL;
3169 mutex_unlock(&card->dapm_mutex);
3172 soc_dpcm_runtime_update(card);
3176 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3179 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3181 * @kcontrol: mixer control
3182 * @uinfo: control element information
3184 * Callback to provide information about a pin switch control.
3186 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3187 struct snd_ctl_elem_info *uinfo)
3189 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3191 uinfo->value.integer.min = 0;
3192 uinfo->value.integer.max = 1;
3196 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3199 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3201 * @kcontrol: mixer control
3204 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3205 struct snd_ctl_elem_value *ucontrol)
3207 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3208 const char *pin = (const char *)kcontrol->private_value;
3210 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3212 ucontrol->value.integer.value[0] =
3213 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3215 mutex_unlock(&card->dapm_mutex);
3219 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3222 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3224 * @kcontrol: mixer control
3227 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3228 struct snd_ctl_elem_value *ucontrol)
3230 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3231 const char *pin = (const char *)kcontrol->private_value;
3233 if (ucontrol->value.integer.value[0])
3234 snd_soc_dapm_enable_pin(&card->dapm, pin);
3236 snd_soc_dapm_disable_pin(&card->dapm, pin);
3238 snd_soc_dapm_sync(&card->dapm);
3241 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3243 struct snd_soc_dapm_widget *
3244 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3245 const struct snd_soc_dapm_widget *widget)
3247 struct snd_soc_dapm_widget *w;
3249 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3250 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3253 "ASoC: Failed to create DAPM control %s\n",
3256 mutex_unlock(&dapm->card->dapm_mutex);
3260 struct snd_soc_dapm_widget *
3261 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3262 const struct snd_soc_dapm_widget *widget)
3264 enum snd_soc_dapm_direction dir;
3265 struct snd_soc_dapm_widget *w;
3269 if ((w = dapm_cnew_widget(widget)) == NULL)
3273 case snd_soc_dapm_regulator_supply:
3274 w->regulator = devm_regulator_get(dapm->dev, w->name);
3275 if (IS_ERR(w->regulator)) {
3276 ret = PTR_ERR(w->regulator);
3277 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3282 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3283 ret = regulator_allow_bypass(w->regulator, true);
3285 dev_warn(w->dapm->dev,
3286 "ASoC: Failed to bypass %s: %d\n",
3290 case snd_soc_dapm_clock_supply:
3291 #ifdef CONFIG_CLKDEV_LOOKUP
3292 w->clk = devm_clk_get(dapm->dev, w->name);
3293 if (IS_ERR(w->clk)) {
3294 ret = PTR_ERR(w->clk);
3295 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3307 prefix = soc_dapm_prefix(dapm);
3309 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3311 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3312 if (w->name == NULL) {
3318 case snd_soc_dapm_mic:
3319 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3320 w->power_check = dapm_generic_check_power;
3322 case snd_soc_dapm_input:
3323 if (!dapm->card->fully_routed)
3324 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3325 w->power_check = dapm_generic_check_power;
3327 case snd_soc_dapm_spk:
3328 case snd_soc_dapm_hp:
3329 w->is_ep = SND_SOC_DAPM_EP_SINK;
3330 w->power_check = dapm_generic_check_power;
3332 case snd_soc_dapm_output:
3333 if (!dapm->card->fully_routed)
3334 w->is_ep = SND_SOC_DAPM_EP_SINK;
3335 w->power_check = dapm_generic_check_power;
3337 case snd_soc_dapm_vmid:
3338 case snd_soc_dapm_siggen:
3339 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3340 w->power_check = dapm_always_on_check_power;
3342 case snd_soc_dapm_mux:
3343 case snd_soc_dapm_demux:
3344 case snd_soc_dapm_switch:
3345 case snd_soc_dapm_mixer:
3346 case snd_soc_dapm_mixer_named_ctl:
3347 case snd_soc_dapm_adc:
3348 case snd_soc_dapm_aif_out:
3349 case snd_soc_dapm_dac:
3350 case snd_soc_dapm_aif_in:
3351 case snd_soc_dapm_pga:
3352 case snd_soc_dapm_out_drv:
3353 case snd_soc_dapm_micbias:
3354 case snd_soc_dapm_line:
3355 case snd_soc_dapm_dai_link:
3356 case snd_soc_dapm_dai_out:
3357 case snd_soc_dapm_dai_in:
3358 w->power_check = dapm_generic_check_power;
3360 case snd_soc_dapm_supply:
3361 case snd_soc_dapm_regulator_supply:
3362 case snd_soc_dapm_clock_supply:
3363 case snd_soc_dapm_kcontrol:
3365 w->power_check = dapm_supply_check_power;
3368 w->power_check = dapm_always_on_check_power;
3373 INIT_LIST_HEAD(&w->list);
3374 INIT_LIST_HEAD(&w->dirty);
3375 list_add_tail(&w->list, &dapm->card->widgets);
3377 snd_soc_dapm_for_each_direction(dir) {
3378 INIT_LIST_HEAD(&w->edges[dir]);
3379 w->endpoints[dir] = -1;
3382 /* machine layer set ups unconnected pins and insertions */
3388 * snd_soc_dapm_new_controls - create new dapm controls
3389 * @dapm: DAPM context
3390 * @widget: widget array
3391 * @num: number of widgets
3393 * Creates new DAPM controls based upon the templates.
3395 * Returns 0 for success else error.
3397 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3398 const struct snd_soc_dapm_widget *widget,
3401 struct snd_soc_dapm_widget *w;
3405 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3406 for (i = 0; i < num; i++) {
3407 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3410 "ASoC: Failed to create DAPM control %s\n",
3417 mutex_unlock(&dapm->card->dapm_mutex);
3420 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3422 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3423 struct snd_kcontrol *kcontrol, int event)
3425 struct snd_soc_dapm_path *source_p, *sink_p;
3426 struct snd_soc_dai *source, *sink;
3427 const struct snd_soc_pcm_stream *config = w->params + w->params_select;
3428 struct snd_pcm_substream substream;
3429 struct snd_pcm_hw_params *params = NULL;
3433 if (WARN_ON(!config) ||
3434 WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3435 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3438 /* We only support a single source and sink, pick the first */
3439 source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
3440 struct snd_soc_dapm_path,
3441 list_node[SND_SOC_DAPM_DIR_OUT]);
3442 sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
3443 struct snd_soc_dapm_path,
3444 list_node[SND_SOC_DAPM_DIR_IN]);
3446 source = source_p->source->priv;
3447 sink = sink_p->sink->priv;
3449 /* Be a little careful as we don't want to overflow the mask array */
3450 if (config->formats) {
3451 fmt = ffs(config->formats) - 1;
3453 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3458 /* Currently very limited parameter selection */
3459 params = kzalloc(sizeof(*params), GFP_KERNEL);
3464 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3466 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3468 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3471 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3472 = config->channels_min;
3473 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3474 = config->channels_max;
3476 memset(&substream, 0, sizeof(substream));
3479 case SND_SOC_DAPM_PRE_PMU:
3480 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3481 ret = soc_dai_hw_params(&substream, params, source);
3485 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3486 ret = soc_dai_hw_params(&substream, params, sink);
3491 case SND_SOC_DAPM_POST_PMU:
3492 ret = snd_soc_dai_digital_mute(sink, 0,
3493 SNDRV_PCM_STREAM_PLAYBACK);
3494 if (ret != 0 && ret != -ENOTSUPP)
3495 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3499 case SND_SOC_DAPM_PRE_PMD:
3500 ret = snd_soc_dai_digital_mute(sink, 1,
3501 SNDRV_PCM_STREAM_PLAYBACK);
3502 if (ret != 0 && ret != -ENOTSUPP)
3503 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3508 WARN(1, "Unknown event %d\n", event);
3517 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
3518 struct snd_ctl_elem_value *ucontrol)
3520 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3522 ucontrol->value.integer.value[0] = w->params_select;
3527 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
3528 struct snd_ctl_elem_value *ucontrol)
3530 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3532 /* Can't change the config when widget is already powered */
3536 if (ucontrol->value.integer.value[0] == w->params_select)
3539 if (ucontrol->value.integer.value[0] >= w->num_params)
3542 w->params_select = ucontrol->value.integer.value[0];
3547 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3548 const struct snd_soc_pcm_stream *params,
3549 unsigned int num_params,
3550 struct snd_soc_dapm_widget *source,
3551 struct snd_soc_dapm_widget *sink)
3553 struct snd_soc_dapm_widget template;
3554 struct snd_soc_dapm_widget *w;
3557 unsigned long private_value;
3558 const char **w_param_text;
3559 struct soc_enum w_param_enum[] = {
3560 SOC_ENUM_SINGLE(0, 0, 0, NULL),
3562 struct snd_kcontrol_new kcontrol_dai_link[] = {
3563 SOC_ENUM_EXT(NULL, w_param_enum[0],
3564 snd_soc_dapm_dai_link_get,
3565 snd_soc_dapm_dai_link_put),
3567 const struct snd_soc_pcm_stream *config = params;
3569 w_param_text = devm_kcalloc(card->dev, num_params,
3570 sizeof(char *), GFP_KERNEL);
3574 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
3575 source->name, sink->name);
3578 goto outfree_w_param;
3581 for (count = 0 ; count < num_params; count++) {
3582 if (!config->stream_name) {
3583 dev_warn(card->dapm.dev,
3584 "ASoC: anonymous config %d for dai link %s\n",
3586 w_param_text[count] =
3587 devm_kasprintf(card->dev, GFP_KERNEL,
3588 "Anonymous Configuration %d",
3590 if (!w_param_text[count]) {
3592 goto outfree_link_name;
3595 w_param_text[count] = devm_kmemdup(card->dev,
3596 config->stream_name,
3597 strlen(config->stream_name) + 1,
3599 if (!w_param_text[count]) {
3601 goto outfree_link_name;
3606 w_param_enum[0].items = num_params;
3607 w_param_enum[0].texts = w_param_text;
3609 memset(&template, 0, sizeof(template));
3610 template.reg = SND_SOC_NOPM;
3611 template.id = snd_soc_dapm_dai_link;
3612 template.name = link_name;
3613 template.event = snd_soc_dai_link_event;
3614 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3615 SND_SOC_DAPM_PRE_PMD;
3616 template.num_kcontrols = 1;
3617 /* duplicate w_param_enum on heap so that memory persists */
3619 (unsigned long) devm_kmemdup(card->dev,
3620 (void *)(kcontrol_dai_link[0].private_value),
3621 sizeof(struct soc_enum), GFP_KERNEL);
3622 if (!private_value) {
3623 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3626 goto outfree_link_name;
3628 kcontrol_dai_link[0].private_value = private_value;
3629 /* duplicate kcontrol_dai_link on heap so that memory persists */
3630 template.kcontrol_news =
3631 devm_kmemdup(card->dev, &kcontrol_dai_link[0],
3632 sizeof(struct snd_kcontrol_new),
3634 if (!template.kcontrol_news) {
3635 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3638 goto outfree_private_value;
3641 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3643 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
3645 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3648 goto outfree_kcontrol_news;
3652 w->num_params = num_params;
3654 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
3657 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
3660 devm_kfree(card->dev, w);
3661 outfree_kcontrol_news:
3662 devm_kfree(card->dev, (void *)template.kcontrol_news);
3663 outfree_private_value:
3664 devm_kfree(card->dev, (void *)private_value);
3666 devm_kfree(card->dev, link_name);
3668 for (count = 0 ; count < num_params; count++)
3669 devm_kfree(card->dev, (void *)w_param_text[count]);
3670 devm_kfree(card->dev, w_param_text);
3675 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3676 struct snd_soc_dai *dai)
3678 struct snd_soc_dapm_widget template;
3679 struct snd_soc_dapm_widget *w;
3681 WARN_ON(dapm->dev != dai->dev);
3683 memset(&template, 0, sizeof(template));
3684 template.reg = SND_SOC_NOPM;
3686 if (dai->driver->playback.stream_name) {
3687 template.id = snd_soc_dapm_dai_in;
3688 template.name = dai->driver->playback.stream_name;
3689 template.sname = dai->driver->playback.stream_name;
3691 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3694 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3696 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3697 dai->driver->playback.stream_name);
3702 dai->playback_widget = w;
3705 if (dai->driver->capture.stream_name) {
3706 template.id = snd_soc_dapm_dai_out;
3707 template.name = dai->driver->capture.stream_name;
3708 template.sname = dai->driver->capture.stream_name;
3710 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3713 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3715 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3716 dai->driver->capture.stream_name);
3721 dai->capture_widget = w;
3727 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3729 struct snd_soc_dapm_widget *dai_w, *w;
3730 struct snd_soc_dapm_widget *src, *sink;
3731 struct snd_soc_dai *dai;
3733 /* For each DAI widget... */
3734 list_for_each_entry(dai_w, &card->widgets, list) {
3735 switch (dai_w->id) {
3736 case snd_soc_dapm_dai_in:
3737 case snd_soc_dapm_dai_out:
3745 /* ...find all widgets with the same stream and link them */
3746 list_for_each_entry(w, &card->widgets, list) {
3747 if (w->dapm != dai_w->dapm)
3751 case snd_soc_dapm_dai_in:
3752 case snd_soc_dapm_dai_out:
3758 if (!w->sname || !strstr(w->sname, dai_w->sname))
3761 if (dai_w->id == snd_soc_dapm_dai_in) {
3768 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
3769 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
3776 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
3777 struct snd_soc_pcm_runtime *rtd)
3779 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3780 struct snd_soc_dapm_widget *sink, *source;
3783 for (i = 0; i < rtd->num_codecs; i++) {
3784 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
3786 /* connect BE DAI playback if widgets are valid */
3787 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3788 source = cpu_dai->playback_widget;
3789 sink = codec_dai->playback_widget;
3790 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3791 cpu_dai->component->name, source->name,
3792 codec_dai->component->name, sink->name);
3794 snd_soc_dapm_add_path(&card->dapm, source, sink,
3798 /* connect BE DAI capture if widgets are valid */
3799 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3800 source = codec_dai->capture_widget;
3801 sink = cpu_dai->capture_widget;
3802 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3803 codec_dai->component->name, source->name,
3804 cpu_dai->component->name, sink->name);
3806 snd_soc_dapm_add_path(&card->dapm, source, sink,
3812 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
3815 struct snd_soc_dapm_widget *w;
3818 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
3819 w = dai->playback_widget;
3821 w = dai->capture_widget;
3824 dapm_mark_dirty(w, "stream event");
3826 if (w->id == snd_soc_dapm_dai_in) {
3827 ep = SND_SOC_DAPM_EP_SOURCE;
3828 dapm_widget_invalidate_input_paths(w);
3830 ep = SND_SOC_DAPM_EP_SINK;
3831 dapm_widget_invalidate_output_paths(w);
3835 case SND_SOC_DAPM_STREAM_START:
3839 case SND_SOC_DAPM_STREAM_STOP:
3843 case SND_SOC_DAPM_STREAM_SUSPEND:
3844 case SND_SOC_DAPM_STREAM_RESUME:
3845 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3846 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3852 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3854 struct snd_soc_pcm_runtime *rtd = card->rtd;
3857 /* for each BE DAI link... */
3858 for (i = 0; i < card->num_rtd; i++) {
3859 rtd = &card->rtd[i];
3862 * dynamic FE links have no fixed DAI mapping.
3863 * CODEC<->CODEC links have no direct connection.
3865 if (rtd->dai_link->dynamic || rtd->dai_link->params)
3868 dapm_connect_dai_link_widgets(card, rtd);
3872 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3877 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
3878 for (i = 0; i < rtd->num_codecs; i++)
3879 soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
3881 dapm_power_widgets(rtd->card, event);
3885 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3886 * @rtd: PCM runtime data
3887 * @stream: stream name
3888 * @event: stream event
3890 * Sends a stream event to the dapm core. The core then makes any
3891 * necessary widget power changes.
3893 * Returns 0 for success else error.
3895 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3898 struct snd_soc_card *card = rtd->card;
3900 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3901 soc_dapm_stream_event(rtd, stream, event);
3902 mutex_unlock(&card->dapm_mutex);
3906 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3907 * @dapm: DAPM context
3910 * Enables input/output pin and its parents or children widgets iff there is
3911 * a valid audio route and active audio stream.
3913 * Requires external locking.
3915 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3916 * do any widget power switching.
3918 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3921 return snd_soc_dapm_set_pin(dapm, pin, 1);
3923 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3926 * snd_soc_dapm_enable_pin - enable pin.
3927 * @dapm: DAPM context
3930 * Enables input/output pin and its parents or children widgets iff there is
3931 * a valid audio route and active audio stream.
3933 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3934 * do any widget power switching.
3936 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3940 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3942 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3944 mutex_unlock(&dapm->card->dapm_mutex);
3948 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3951 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3952 * @dapm: DAPM context
3955 * Enables input/output pin regardless of any other state. This is
3956 * intended for use with microphone bias supplies used in microphone
3959 * Requires external locking.
3961 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3962 * do any widget power switching.
3964 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3967 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3970 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3974 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3975 if (!w->connected) {
3977 * w->force does not affect the number of input or output paths,
3978 * so we only have to recheck if w->connected is changed
3980 dapm_widget_invalidate_input_paths(w);
3981 dapm_widget_invalidate_output_paths(w);
3985 dapm_mark_dirty(w, "force enable");
3989 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3992 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3993 * @dapm: DAPM context
3996 * Enables input/output pin regardless of any other state. This is
3997 * intended for use with microphone bias supplies used in microphone
4000 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4001 * do any widget power switching.
4003 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4008 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4010 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4012 mutex_unlock(&dapm->card->dapm_mutex);
4016 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4019 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4020 * @dapm: DAPM context
4023 * Disables input/output pin and its parents or children widgets.
4025 * Requires external locking.
4027 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4028 * do any widget power switching.
4030 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4033 return snd_soc_dapm_set_pin(dapm, pin, 0);
4035 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4038 * snd_soc_dapm_disable_pin - disable pin.
4039 * @dapm: DAPM context
4042 * Disables input/output pin and its parents or children widgets.
4044 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4045 * do any widget power switching.
4047 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4052 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4054 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4056 mutex_unlock(&dapm->card->dapm_mutex);
4060 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4063 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4064 * @dapm: DAPM context
4067 * Marks the specified pin as being not connected, disabling it along
4068 * any parent or child widgets. At present this is identical to
4069 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4070 * additional things such as disabling controls which only affect
4071 * paths through the pin.
4073 * Requires external locking.
4075 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4076 * do any widget power switching.
4078 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4081 return snd_soc_dapm_set_pin(dapm, pin, 0);
4083 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4086 * snd_soc_dapm_nc_pin - permanently disable pin.
4087 * @dapm: DAPM context
4090 * Marks the specified pin as being not connected, disabling it along
4091 * any parent or child widgets. At present this is identical to
4092 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4093 * additional things such as disabling controls which only affect
4094 * paths through the pin.
4096 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4097 * do any widget power switching.
4099 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4103 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4105 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4107 mutex_unlock(&dapm->card->dapm_mutex);
4111 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4114 * snd_soc_dapm_get_pin_status - get audio pin status
4115 * @dapm: DAPM context
4116 * @pin: audio signal pin endpoint (or start point)
4118 * Get audio pin status - connected or disconnected.
4120 * Returns 1 for connected otherwise 0.
4122 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4125 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4128 return w->connected;
4132 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4135 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4136 * @dapm: DAPM context
4137 * @pin: audio signal pin endpoint (or start point)
4139 * Mark the given endpoint or pin as ignoring suspend. When the
4140 * system is disabled a path between two endpoints flagged as ignoring
4141 * suspend will not be disabled. The path must already be enabled via
4142 * normal means at suspend time, it will not be turned on if it was not
4145 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4148 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4151 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4155 w->ignore_suspend = 1;
4159 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4162 * snd_soc_dapm_free - free dapm resources
4163 * @dapm: DAPM context
4165 * Free all dapm widgets and resources.
4167 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4169 dapm_debugfs_cleanup(dapm);
4170 dapm_free_widgets(dapm);
4171 list_del(&dapm->list);
4173 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4175 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4177 struct snd_soc_card *card = dapm->card;
4178 struct snd_soc_dapm_widget *w;
4179 LIST_HEAD(down_list);
4182 mutex_lock(&card->dapm_mutex);
4184 list_for_each_entry(w, &dapm->card->widgets, list) {
4185 if (w->dapm != dapm)
4188 dapm_seq_insert(w, &down_list, false);
4194 /* If there were no widgets to power down we're already in
4198 if (dapm->bias_level == SND_SOC_BIAS_ON)
4199 snd_soc_dapm_set_bias_level(dapm,
4200 SND_SOC_BIAS_PREPARE);
4201 dapm_seq_run(card, &down_list, 0, false);
4202 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4203 snd_soc_dapm_set_bias_level(dapm,
4204 SND_SOC_BIAS_STANDBY);
4207 mutex_unlock(&card->dapm_mutex);
4211 * snd_soc_dapm_shutdown - callback for system shutdown
4213 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4215 struct snd_soc_dapm_context *dapm;
4217 list_for_each_entry(dapm, &card->dapm_list, list) {
4218 if (dapm != &card->dapm) {
4219 soc_dapm_shutdown_dapm(dapm);
4220 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4221 snd_soc_dapm_set_bias_level(dapm,
4226 soc_dapm_shutdown_dapm(&card->dapm);
4227 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4228 snd_soc_dapm_set_bias_level(&card->dapm,
4232 /* Module information */
4233 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4234 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4235 MODULE_LICENSE("GPL");