2 * soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
4 * Copyright 2005 Wolfson Microelectronics PLC.
5 * Author: Liam Girdwood <lrg@slimlogic.co.uk>
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2 of the License, or (at your
10 * option) any later version.
13 * o Changes power status of internal codec blocks depending on the
14 * dynamic configuration of codec internal audio paths and active
16 * o Platform power domain - can support external components i.e. amps and
17 * mic/headphone insertion events.
18 * o Automatic Mic Bias support
19 * o Jack insertion power event initiation - e.g. hp insertion will enable
21 * o Delayed power down of audio subsystem to reduce pops between a quick
26 #include <linux/module.h>
27 #include <linux/moduleparam.h>
28 #include <linux/init.h>
29 #include <linux/async.h>
30 #include <linux/delay.h>
32 #include <linux/bitops.h>
33 #include <linux/platform_device.h>
34 #include <linux/jiffies.h>
35 #include <linux/debugfs.h>
36 #include <linux/pm_runtime.h>
37 #include <linux/regulator/consumer.h>
38 #include <linux/clk.h>
39 #include <linux/slab.h>
40 #include <sound/core.h>
41 #include <sound/pcm.h>
42 #include <sound/pcm_params.h>
43 #include <sound/soc.h>
44 #include <sound/initval.h>
46 #include <trace/events/asoc.h>
48 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
50 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
51 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
53 int (*connected)(struct snd_soc_dapm_widget *source,
54 struct snd_soc_dapm_widget *sink));
55 static struct snd_soc_dapm_widget *
56 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
57 const struct snd_soc_dapm_widget *widget);
59 /* dapm power sequences - make this per codec in the future */
60 static int dapm_up_seq[] = {
61 [snd_soc_dapm_pre] = 0,
62 [snd_soc_dapm_regulator_supply] = 1,
63 [snd_soc_dapm_clock_supply] = 1,
64 [snd_soc_dapm_supply] = 2,
65 [snd_soc_dapm_micbias] = 3,
66 [snd_soc_dapm_dai_link] = 2,
67 [snd_soc_dapm_dai_in] = 4,
68 [snd_soc_dapm_dai_out] = 4,
69 [snd_soc_dapm_aif_in] = 4,
70 [snd_soc_dapm_aif_out] = 4,
71 [snd_soc_dapm_mic] = 5,
72 [snd_soc_dapm_mux] = 6,
73 [snd_soc_dapm_dac] = 7,
74 [snd_soc_dapm_switch] = 8,
75 [snd_soc_dapm_mixer] = 8,
76 [snd_soc_dapm_mixer_named_ctl] = 8,
77 [snd_soc_dapm_pga] = 9,
78 [snd_soc_dapm_adc] = 10,
79 [snd_soc_dapm_out_drv] = 11,
80 [snd_soc_dapm_hp] = 11,
81 [snd_soc_dapm_spk] = 11,
82 [snd_soc_dapm_line] = 11,
83 [snd_soc_dapm_kcontrol] = 12,
84 [snd_soc_dapm_post] = 13,
87 static int dapm_down_seq[] = {
88 [snd_soc_dapm_pre] = 0,
89 [snd_soc_dapm_kcontrol] = 1,
90 [snd_soc_dapm_adc] = 2,
91 [snd_soc_dapm_hp] = 3,
92 [snd_soc_dapm_spk] = 3,
93 [snd_soc_dapm_line] = 3,
94 [snd_soc_dapm_out_drv] = 3,
95 [snd_soc_dapm_pga] = 4,
96 [snd_soc_dapm_switch] = 5,
97 [snd_soc_dapm_mixer_named_ctl] = 5,
98 [snd_soc_dapm_mixer] = 5,
99 [snd_soc_dapm_dac] = 6,
100 [snd_soc_dapm_mic] = 7,
101 [snd_soc_dapm_micbias] = 8,
102 [snd_soc_dapm_mux] = 9,
103 [snd_soc_dapm_aif_in] = 10,
104 [snd_soc_dapm_aif_out] = 10,
105 [snd_soc_dapm_dai_in] = 10,
106 [snd_soc_dapm_dai_out] = 10,
107 [snd_soc_dapm_dai_link] = 11,
108 [snd_soc_dapm_supply] = 12,
109 [snd_soc_dapm_clock_supply] = 13,
110 [snd_soc_dapm_regulator_supply] = 13,
111 [snd_soc_dapm_post] = 14,
114 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
116 if (dapm->card && dapm->card->instantiated)
117 lockdep_assert_held(&dapm->card->dapm_mutex);
120 static void pop_wait(u32 pop_time)
123 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
126 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
134 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
139 vsnprintf(buf, PAGE_SIZE, fmt, args);
140 dev_info(dev, "%s", buf);
146 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
148 return !list_empty(&w->dirty);
151 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
153 dapm_assert_locked(w->dapm);
155 if (!dapm_dirty_widget(w)) {
156 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
158 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
162 void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
164 struct snd_soc_card *card = dapm->card;
165 struct snd_soc_dapm_widget *w;
167 mutex_lock(&card->dapm_mutex);
169 list_for_each_entry(w, &card->widgets, list) {
171 case snd_soc_dapm_input:
172 case snd_soc_dapm_output:
173 dapm_mark_dirty(w, "Rechecking inputs and outputs");
180 mutex_unlock(&card->dapm_mutex);
182 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
184 /* create a new dapm widget */
185 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
186 const struct snd_soc_dapm_widget *_widget)
188 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
191 struct dapm_kcontrol_data {
193 struct snd_soc_dapm_widget *widget;
194 struct list_head paths;
195 struct snd_soc_dapm_widget_list *wlist;
198 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
199 struct snd_kcontrol *kcontrol)
201 struct dapm_kcontrol_data *data;
202 struct soc_mixer_control *mc;
204 data = kzalloc(sizeof(*data), GFP_KERNEL);
206 dev_err(widget->dapm->dev,
207 "ASoC: can't allocate kcontrol data for %s\n",
212 INIT_LIST_HEAD(&data->paths);
214 switch (widget->id) {
215 case snd_soc_dapm_switch:
216 case snd_soc_dapm_mixer:
217 case snd_soc_dapm_mixer_named_ctl:
218 mc = (struct soc_mixer_control *)kcontrol->private_value;
220 if (mc->autodisable) {
221 struct snd_soc_dapm_widget template;
223 memset(&template, 0, sizeof(template));
224 template.reg = mc->reg;
225 template.mask = (1 << fls(mc->max)) - 1;
226 template.shift = mc->shift;
228 template.off_val = mc->max;
230 template.off_val = 0;
231 template.on_val = template.off_val;
232 template.id = snd_soc_dapm_kcontrol;
233 template.name = kcontrol->id.name;
235 data->value = template.on_val;
237 data->widget = snd_soc_dapm_new_control(widget->dapm,
249 kcontrol->private_data = data;
254 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
256 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
261 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
262 const struct snd_kcontrol *kcontrol)
264 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
269 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
270 struct snd_soc_dapm_widget *widget)
272 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
273 struct snd_soc_dapm_widget_list *new_wlist;
277 n = data->wlist->num_widgets + 1;
281 new_wlist = krealloc(data->wlist,
282 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
286 new_wlist->widgets[n - 1] = widget;
287 new_wlist->num_widgets = n;
289 data->wlist = new_wlist;
294 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
295 struct snd_soc_dapm_path *path)
297 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
299 list_add_tail(&path->list_kcontrol, &data->paths);
302 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
303 path->source, NULL, NULL);
307 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
309 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
314 return data->widget->power;
317 static struct list_head *dapm_kcontrol_get_path_list(
318 const struct snd_kcontrol *kcontrol)
320 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
325 #define dapm_kcontrol_for_each_path(path, kcontrol) \
326 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
329 static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
331 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
336 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
339 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
341 if (data->value == value)
345 data->widget->on_val = value;
353 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
354 * @kcontrol: The kcontrol
356 struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
358 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec;
360 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
362 static void dapm_reset(struct snd_soc_card *card)
364 struct snd_soc_dapm_widget *w;
366 lockdep_assert_held(&card->dapm_mutex);
368 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
370 list_for_each_entry(w, &card->widgets, list) {
371 w->new_power = w->power;
372 w->power_checked = false;
378 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg,
382 *value = snd_soc_read(w->codec, reg);
384 } else if (w->platform) {
385 *value = snd_soc_platform_read(w->platform, reg);
389 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
393 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg,
397 return snd_soc_write(w->codec, reg, val);
398 else if (w->platform)
399 return snd_soc_platform_write(w->platform, reg, val);
401 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
405 static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
407 if (w->codec && !w->codec->using_regmap)
408 mutex_lock(&w->codec->mutex);
409 else if (w->platform)
410 mutex_lock(&w->platform->mutex);
413 static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
415 if (w->codec && !w->codec->using_regmap)
416 mutex_unlock(&w->codec->mutex);
417 else if (w->platform)
418 mutex_unlock(&w->platform->mutex);
421 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
423 if (dapm->codec && dapm->codec->using_regmap)
424 regmap_async_complete(dapm->codec->control_data);
427 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
428 unsigned short reg, unsigned int mask, unsigned int value)
431 unsigned int old, new;
434 if (w->codec && w->codec->using_regmap) {
435 ret = regmap_update_bits_check_async(w->codec->control_data,
442 ret = soc_widget_read(w, reg, &old);
444 soc_widget_unlock(w);
448 new = (old & ~mask) | (value & mask);
451 ret = soc_widget_write(w, reg, new);
453 soc_widget_unlock(w);
457 soc_widget_unlock(w);
464 * snd_soc_dapm_set_bias_level - set the bias level for the system
465 * @dapm: DAPM context
466 * @level: level to configure
468 * Configure the bias (power) levels for the SoC audio device.
470 * Returns 0 for success else error.
472 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
473 enum snd_soc_bias_level level)
475 struct snd_soc_card *card = dapm->card;
478 trace_snd_soc_bias_level_start(card, level);
480 if (card && card->set_bias_level)
481 ret = card->set_bias_level(card, dapm, level);
486 if (dapm->codec->driver->set_bias_level)
487 ret = dapm->codec->driver->set_bias_level(dapm->codec,
490 dapm->bias_level = level;
491 } else if (!card || dapm != &card->dapm) {
492 dapm->bias_level = level;
498 if (card && card->set_bias_level_post)
499 ret = card->set_bias_level_post(card, dapm, level);
501 trace_snd_soc_bias_level_done(card, level);
506 /* connect mux widget to its interconnecting audio paths */
507 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
508 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
509 struct snd_soc_dapm_path *path, const char *control_name,
510 const struct snd_kcontrol_new *kcontrol)
512 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
513 unsigned int val, item;
516 if (e->reg != SND_SOC_NOPM) {
517 soc_widget_read(dest, e->reg, &val);
518 val = (val >> e->shift_l) & e->mask;
519 item = snd_soc_enum_val_to_item(e, val);
521 /* since a virtual mux has no backing registers to
522 * decide which path to connect, it will try to match
523 * with the first enumeration. This is to ensure
524 * that the default mux choice (the first) will be
525 * correctly powered up during initialization.
530 for (i = 0; i < e->items; i++) {
531 if (!(strcmp(control_name, e->texts[i]))) {
532 list_add(&path->list, &dapm->card->paths);
533 list_add(&path->list_sink, &dest->sources);
534 list_add(&path->list_source, &src->sinks);
535 path->name = (char*)e->texts[i];
547 /* set up initial codec paths */
548 static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
549 struct snd_soc_dapm_path *p, int i)
551 struct soc_mixer_control *mc = (struct soc_mixer_control *)
552 w->kcontrol_news[i].private_value;
553 unsigned int reg = mc->reg;
554 unsigned int shift = mc->shift;
555 unsigned int max = mc->max;
556 unsigned int mask = (1 << fls(max)) - 1;
557 unsigned int invert = mc->invert;
560 if (reg != SND_SOC_NOPM) {
561 soc_widget_read(w, reg, &val);
562 val = (val >> shift) & mask;
571 /* connect mixer widget to its interconnecting audio paths */
572 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
573 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
574 struct snd_soc_dapm_path *path, const char *control_name)
578 /* search for mixer kcontrol */
579 for (i = 0; i < dest->num_kcontrols; i++) {
580 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
581 list_add(&path->list, &dapm->card->paths);
582 list_add(&path->list_sink, &dest->sources);
583 list_add(&path->list_source, &src->sinks);
584 path->name = dest->kcontrol_news[i].name;
585 dapm_set_mixer_path_status(dest, path, i);
592 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
593 struct snd_soc_dapm_widget *kcontrolw,
594 const struct snd_kcontrol_new *kcontrol_new,
595 struct snd_kcontrol **kcontrol)
597 struct snd_soc_dapm_widget *w;
602 list_for_each_entry(w, &dapm->card->widgets, list) {
603 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
605 for (i = 0; i < w->num_kcontrols; i++) {
606 if (&w->kcontrol_news[i] == kcontrol_new) {
608 *kcontrol = w->kcontrols[i];
618 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
619 * create it. Either way, add the widget into the control's widget list
621 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
624 struct snd_soc_dapm_context *dapm = w->dapm;
625 struct snd_card *card = dapm->card->snd_card;
629 struct snd_kcontrol *kcontrol;
630 bool wname_in_long_name, kcname_in_long_name;
636 prefix = dapm->codec->name_prefix;
641 prefix_len = strlen(prefix) + 1;
645 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
650 wname_in_long_name = false;
651 kcname_in_long_name = true;
654 case snd_soc_dapm_switch:
655 case snd_soc_dapm_mixer:
656 wname_in_long_name = true;
657 kcname_in_long_name = true;
659 case snd_soc_dapm_mixer_named_ctl:
660 wname_in_long_name = false;
661 kcname_in_long_name = true;
663 case snd_soc_dapm_mux:
664 wname_in_long_name = true;
665 kcname_in_long_name = false;
672 if (wname_in_long_name && kcname_in_long_name) {
674 * The control will get a prefix from the control
675 * creation process but we're also using the same
676 * prefix for widgets so cut the prefix off the
677 * front of the widget name.
679 long_name = kasprintf(GFP_KERNEL, "%s %s",
680 w->name + prefix_len,
681 w->kcontrol_news[kci].name);
682 if (long_name == NULL)
686 } else if (wname_in_long_name) {
688 name = w->name + prefix_len;
691 name = w->kcontrol_news[kci].name;
694 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
699 kcontrol->private_free = dapm_kcontrol_free;
701 ret = dapm_kcontrol_data_alloc(w, kcontrol);
703 snd_ctl_free_one(kcontrol);
707 ret = snd_ctl_add(card, kcontrol);
710 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
716 ret = dapm_kcontrol_add_widget(kcontrol, w);
720 w->kcontrols[kci] = kcontrol;
725 /* create new dapm mixer control */
726 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
729 struct snd_soc_dapm_path *path;
732 for (i = 0; i < w->num_kcontrols; i++) {
734 list_for_each_entry(path, &w->sources, list_sink) {
735 /* mixer/mux paths name must match control name */
736 if (path->name != (char *)w->kcontrol_news[i].name)
739 if (w->kcontrols[i]) {
740 dapm_kcontrol_add_path(w->kcontrols[i], path);
744 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
748 dapm_kcontrol_add_path(w->kcontrols[i], path);
755 /* create new dapm mux control */
756 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
758 struct snd_soc_dapm_context *dapm = w->dapm;
759 struct snd_soc_dapm_path *path;
762 if (w->num_kcontrols != 1) {
764 "ASoC: mux %s has incorrect number of controls\n",
769 if (list_empty(&w->sources)) {
770 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
774 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
778 list_for_each_entry(path, &w->sources, list_sink)
779 dapm_kcontrol_add_path(w->kcontrols[0], path);
784 /* create new dapm volume control */
785 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
787 if (w->num_kcontrols)
788 dev_err(w->dapm->dev,
789 "ASoC: PGA controls not supported: '%s'\n", w->name);
794 /* reset 'walked' bit for each dapm path */
795 static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
796 struct list_head *sink)
798 struct snd_soc_dapm_path *p;
800 list_for_each_entry(p, sink, list_source) {
803 dapm_clear_walk_output(dapm, &p->sink->sinks);
808 static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
809 struct list_head *source)
811 struct snd_soc_dapm_path *p;
813 list_for_each_entry(p, source, list_sink) {
816 dapm_clear_walk_input(dapm, &p->source->sources);
822 /* We implement power down on suspend by checking the power state of
823 * the ALSA card - when we are suspending the ALSA state for the card
826 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
828 int level = snd_power_get_state(widget->dapm->card->snd_card);
831 case SNDRV_CTL_POWER_D3hot:
832 case SNDRV_CTL_POWER_D3cold:
833 if (widget->ignore_suspend)
834 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
836 return widget->ignore_suspend;
842 /* add widget to list if it's not already in the list */
843 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
844 struct snd_soc_dapm_widget *w)
846 struct snd_soc_dapm_widget_list *wlist;
847 int wlistsize, wlistentries, i;
854 /* is this widget already in the list */
855 for (i = 0; i < wlist->num_widgets; i++) {
856 if (wlist->widgets[i] == w)
860 /* allocate some new space */
861 wlistentries = wlist->num_widgets + 1;
862 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
863 wlistentries * sizeof(struct snd_soc_dapm_widget *);
864 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
866 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
872 /* insert the widget */
873 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
874 w->name, wlist->num_widgets);
876 wlist->widgets[wlist->num_widgets] = w;
877 wlist->num_widgets++;
882 * Recursively check for a completed path to an active or physically connected
883 * output widget. Returns number of complete paths.
885 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
886 struct snd_soc_dapm_widget_list **list)
888 struct snd_soc_dapm_path *path;
891 if (widget->outputs >= 0)
892 return widget->outputs;
894 DAPM_UPDATE_STAT(widget, path_checks);
896 switch (widget->id) {
897 case snd_soc_dapm_supply:
898 case snd_soc_dapm_regulator_supply:
899 case snd_soc_dapm_clock_supply:
900 case snd_soc_dapm_kcontrol:
906 switch (widget->id) {
907 case snd_soc_dapm_adc:
908 case snd_soc_dapm_aif_out:
909 case snd_soc_dapm_dai_out:
910 if (widget->active) {
911 widget->outputs = snd_soc_dapm_suspend_check(widget);
912 return widget->outputs;
918 if (widget->connected) {
919 /* connected pin ? */
920 if (widget->id == snd_soc_dapm_output && !widget->ext) {
921 widget->outputs = snd_soc_dapm_suspend_check(widget);
922 return widget->outputs;
925 /* connected jack or spk ? */
926 if (widget->id == snd_soc_dapm_hp ||
927 widget->id == snd_soc_dapm_spk ||
928 (widget->id == snd_soc_dapm_line &&
929 !list_empty(&widget->sources))) {
930 widget->outputs = snd_soc_dapm_suspend_check(widget);
931 return widget->outputs;
935 list_for_each_entry(path, &widget->sinks, list_source) {
936 DAPM_UPDATE_STAT(widget, neighbour_checks);
947 trace_snd_soc_dapm_output_path(widget, path);
949 if (path->sink && path->connect) {
953 /* do we need to add this widget to the list ? */
956 err = dapm_list_add_widget(list, path->sink);
958 dev_err(widget->dapm->dev,
959 "ASoC: could not add widget %s\n",
966 con += is_connected_output_ep(path->sink, list);
972 widget->outputs = con;
978 * Recursively check for a completed path to an active or physically connected
979 * input widget. Returns number of complete paths.
981 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
982 struct snd_soc_dapm_widget_list **list)
984 struct snd_soc_dapm_path *path;
987 if (widget->inputs >= 0)
988 return widget->inputs;
990 DAPM_UPDATE_STAT(widget, path_checks);
992 switch (widget->id) {
993 case snd_soc_dapm_supply:
994 case snd_soc_dapm_regulator_supply:
995 case snd_soc_dapm_clock_supply:
996 case snd_soc_dapm_kcontrol:
1002 /* active stream ? */
1003 switch (widget->id) {
1004 case snd_soc_dapm_dac:
1005 case snd_soc_dapm_aif_in:
1006 case snd_soc_dapm_dai_in:
1007 if (widget->active) {
1008 widget->inputs = snd_soc_dapm_suspend_check(widget);
1009 return widget->inputs;
1015 if (widget->connected) {
1016 /* connected pin ? */
1017 if (widget->id == snd_soc_dapm_input && !widget->ext) {
1018 widget->inputs = snd_soc_dapm_suspend_check(widget);
1019 return widget->inputs;
1022 /* connected VMID/Bias for lower pops */
1023 if (widget->id == snd_soc_dapm_vmid) {
1024 widget->inputs = snd_soc_dapm_suspend_check(widget);
1025 return widget->inputs;
1028 /* connected jack ? */
1029 if (widget->id == snd_soc_dapm_mic ||
1030 (widget->id == snd_soc_dapm_line &&
1031 !list_empty(&widget->sinks))) {
1032 widget->inputs = snd_soc_dapm_suspend_check(widget);
1033 return widget->inputs;
1036 /* signal generator */
1037 if (widget->id == snd_soc_dapm_siggen) {
1038 widget->inputs = snd_soc_dapm_suspend_check(widget);
1039 return widget->inputs;
1043 list_for_each_entry(path, &widget->sources, list_sink) {
1044 DAPM_UPDATE_STAT(widget, neighbour_checks);
1055 trace_snd_soc_dapm_input_path(widget, path);
1057 if (path->source && path->connect) {
1061 /* do we need to add this widget to the list ? */
1064 err = dapm_list_add_widget(list, path->source);
1066 dev_err(widget->dapm->dev,
1067 "ASoC: could not add widget %s\n",
1074 con += is_connected_input_ep(path->source, list);
1080 widget->inputs = con;
1086 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1087 * @dai: the soc DAI.
1088 * @stream: stream direction.
1089 * @list: list of active widgets for this stream.
1091 * Queries DAPM graph as to whether an valid audio stream path exists for
1092 * the initial stream specified by name. This takes into account
1093 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1095 * Returns the number of valid paths or negative error.
1097 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1098 struct snd_soc_dapm_widget_list **list)
1100 struct snd_soc_card *card = dai->card;
1103 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1106 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1107 paths = is_connected_output_ep(dai->playback_widget, list);
1108 dapm_clear_walk_output(&card->dapm,
1109 &dai->playback_widget->sinks);
1111 paths = is_connected_input_ep(dai->capture_widget, list);
1112 dapm_clear_walk_input(&card->dapm,
1113 &dai->capture_widget->sources);
1116 trace_snd_soc_dapm_connected(paths, stream);
1117 mutex_unlock(&card->dapm_mutex);
1123 * Handler for generic register modifier widget.
1125 int dapm_reg_event(struct snd_soc_dapm_widget *w,
1126 struct snd_kcontrol *kcontrol, int event)
1130 if (SND_SOC_DAPM_EVENT_ON(event))
1135 soc_widget_update_bits_locked(w, -(w->reg + 1),
1136 w->mask << w->shift, val << w->shift);
1140 EXPORT_SYMBOL_GPL(dapm_reg_event);
1143 * Handler for regulator supply widget.
1145 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1146 struct snd_kcontrol *kcontrol, int event)
1150 soc_dapm_async_complete(w->dapm);
1152 if (SND_SOC_DAPM_EVENT_ON(event)) {
1153 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1154 ret = regulator_allow_bypass(w->regulator, false);
1156 dev_warn(w->dapm->dev,
1157 "ASoC: Failed to unbypass %s: %d\n",
1161 return regulator_enable(w->regulator);
1163 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1164 ret = regulator_allow_bypass(w->regulator, true);
1166 dev_warn(w->dapm->dev,
1167 "ASoC: Failed to bypass %s: %d\n",
1171 return regulator_disable_deferred(w->regulator, w->shift);
1174 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1177 * Handler for clock supply widget.
1179 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1180 struct snd_kcontrol *kcontrol, int event)
1185 soc_dapm_async_complete(w->dapm);
1187 #ifdef CONFIG_HAVE_CLK
1188 if (SND_SOC_DAPM_EVENT_ON(event)) {
1189 return clk_prepare_enable(w->clk);
1191 clk_disable_unprepare(w->clk);
1197 EXPORT_SYMBOL_GPL(dapm_clock_event);
1199 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1201 if (w->power_checked)
1202 return w->new_power;
1207 w->new_power = w->power_check(w);
1209 w->power_checked = true;
1211 return w->new_power;
1214 /* Generic check to see if a widget should be powered.
1216 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1220 DAPM_UPDATE_STAT(w, power_checks);
1222 in = is_connected_input_ep(w, NULL);
1223 dapm_clear_walk_input(w->dapm, &w->sources);
1224 out = is_connected_output_ep(w, NULL);
1225 dapm_clear_walk_output(w->dapm, &w->sinks);
1226 return out != 0 && in != 0;
1229 /* Check to see if an ADC has power */
1230 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1234 DAPM_UPDATE_STAT(w, power_checks);
1237 in = is_connected_input_ep(w, NULL);
1238 dapm_clear_walk_input(w->dapm, &w->sources);
1241 return dapm_generic_check_power(w);
1245 /* Check to see if a DAC has power */
1246 static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1250 DAPM_UPDATE_STAT(w, power_checks);
1253 out = is_connected_output_ep(w, NULL);
1254 dapm_clear_walk_output(w->dapm, &w->sinks);
1257 return dapm_generic_check_power(w);
1261 /* Check to see if a power supply is needed */
1262 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1264 struct snd_soc_dapm_path *path;
1266 DAPM_UPDATE_STAT(w, power_checks);
1268 /* Check if one of our outputs is connected */
1269 list_for_each_entry(path, &w->sinks, list_source) {
1270 DAPM_UPDATE_STAT(w, neighbour_checks);
1275 if (path->connected &&
1276 !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_widget *w;
1395 unsigned int value = 0;
1396 unsigned int mask = 0;
1398 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1401 list_for_each_entry(w, pending, power_list) {
1402 WARN_ON(reg != w->reg);
1403 w->power = w->new_power;
1405 mask |= w->mask << w->shift;
1407 value |= w->on_val << w->shift;
1409 value |= w->off_val << w->shift;
1411 pop_dbg(w->dapm->dev, card->pop_time,
1412 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1413 w->name, reg, value, mask);
1415 /* Check for events */
1416 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1417 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1421 /* Any widget will do, they should all be updating the
1424 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1427 pop_dbg(w->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_widget_update_bits_locked(w, 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_widget_update_bits_locked(w, 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 STADDBY->ON or ON->STANDBY transition */
1616 if (d->bias_level != d->target_bias_level) {
1617 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1620 "ASoC: Failed to prepare bias: %d\n", ret);
1624 /* Async callback run prior to DAPM sequences - brings to their final
1627 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1629 struct snd_soc_dapm_context *d = data;
1632 /* If we just powered the last thing off drop to standby bias */
1633 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1634 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1635 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1636 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1638 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1642 /* If we're in standby and can support bias off then do that */
1643 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1644 d->target_bias_level == SND_SOC_BIAS_OFF) {
1645 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1647 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1651 pm_runtime_put(d->dev);
1654 /* If we just powered up then move to active bias */
1655 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1656 d->target_bias_level == SND_SOC_BIAS_ON) {
1657 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1659 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1664 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1665 bool power, bool connect)
1667 /* If a connection is being made or broken then that update
1668 * will have marked the peer dirty, otherwise the widgets are
1669 * not connected and this update has no impact. */
1673 /* If the peer is already in the state we're moving to then we
1674 * won't have an impact on it. */
1675 if (power != peer->power)
1676 dapm_mark_dirty(peer, "peer state change");
1679 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1680 struct list_head *up_list,
1681 struct list_head *down_list)
1683 struct snd_soc_dapm_path *path;
1685 if (w->power == power)
1688 trace_snd_soc_dapm_widget_power(w, power);
1690 /* If we changed our power state perhaps our neigbours changed
1693 list_for_each_entry(path, &w->sources, list_sink) {
1695 dapm_widget_set_peer_power(path->source, power,
1700 case snd_soc_dapm_supply:
1701 case snd_soc_dapm_regulator_supply:
1702 case snd_soc_dapm_clock_supply:
1703 case snd_soc_dapm_kcontrol:
1704 /* Supplies can't affect their outputs, only their inputs */
1707 list_for_each_entry(path, &w->sinks, list_source) {
1709 dapm_widget_set_peer_power(path->sink, power,
1717 dapm_seq_insert(w, up_list, true);
1719 dapm_seq_insert(w, down_list, false);
1722 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1723 struct list_head *up_list,
1724 struct list_head *down_list)
1729 case snd_soc_dapm_pre:
1730 dapm_seq_insert(w, down_list, false);
1732 case snd_soc_dapm_post:
1733 dapm_seq_insert(w, up_list, true);
1737 power = dapm_widget_power_check(w);
1739 dapm_widget_set_power(w, power, up_list, down_list);
1745 * Scan each dapm widget for complete audio path.
1746 * A complete path is a route that has valid endpoints i.e.:-
1748 * o DAC to output pin.
1749 * o Input Pin to ADC.
1750 * o Input pin to Output pin (bypass, sidetone)
1751 * o DAC to ADC (loopback).
1753 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1755 struct snd_soc_dapm_widget *w;
1756 struct snd_soc_dapm_context *d;
1758 LIST_HEAD(down_list);
1759 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1760 enum snd_soc_bias_level bias;
1762 lockdep_assert_held(&card->dapm_mutex);
1764 trace_snd_soc_dapm_start(card);
1766 list_for_each_entry(d, &card->dapm_list, list) {
1767 if (d->idle_bias_off)
1768 d->target_bias_level = SND_SOC_BIAS_OFF;
1770 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1775 /* Check which widgets we need to power and store them in
1776 * lists indicating if they should be powered up or down. We
1777 * only check widgets that have been flagged as dirty but note
1778 * that new widgets may be added to the dirty list while we
1781 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1782 dapm_power_one_widget(w, &up_list, &down_list);
1785 list_for_each_entry(w, &card->widgets, list) {
1787 case snd_soc_dapm_pre:
1788 case snd_soc_dapm_post:
1789 /* These widgets always need to be powered */
1792 list_del_init(&w->dirty);
1799 /* Supplies and micbiases only bring the
1800 * context up to STANDBY as unless something
1801 * else is active and passing audio they
1802 * generally don't require full power. Signal
1803 * generators are virtual pins and have no
1804 * power impact themselves.
1807 case snd_soc_dapm_siggen:
1808 case snd_soc_dapm_vmid:
1810 case snd_soc_dapm_supply:
1811 case snd_soc_dapm_regulator_supply:
1812 case snd_soc_dapm_clock_supply:
1813 case snd_soc_dapm_micbias:
1814 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1815 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1818 d->target_bias_level = SND_SOC_BIAS_ON;
1825 /* Force all contexts in the card to the same bias state if
1826 * they're not ground referenced.
1828 bias = SND_SOC_BIAS_OFF;
1829 list_for_each_entry(d, &card->dapm_list, list)
1830 if (d->target_bias_level > bias)
1831 bias = d->target_bias_level;
1832 list_for_each_entry(d, &card->dapm_list, list)
1833 if (!d->idle_bias_off)
1834 d->target_bias_level = bias;
1836 trace_snd_soc_dapm_walk_done(card);
1838 /* Run card bias changes at first */
1839 dapm_pre_sequence_async(&card->dapm, 0);
1840 /* Run other bias changes in parallel */
1841 list_for_each_entry(d, &card->dapm_list, list) {
1842 if (d != &card->dapm)
1843 async_schedule_domain(dapm_pre_sequence_async, d,
1846 async_synchronize_full_domain(&async_domain);
1848 list_for_each_entry(w, &down_list, power_list) {
1849 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1852 list_for_each_entry(w, &up_list, power_list) {
1853 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1856 /* Power down widgets first; try to avoid amplifying pops. */
1857 dapm_seq_run(card, &down_list, event, false);
1859 dapm_widget_update(card);
1862 dapm_seq_run(card, &up_list, event, true);
1864 /* Run all the bias changes in parallel */
1865 list_for_each_entry(d, &card->dapm_list, list) {
1866 if (d != &card->dapm)
1867 async_schedule_domain(dapm_post_sequence_async, d,
1870 async_synchronize_full_domain(&async_domain);
1871 /* Run card bias changes at last */
1872 dapm_post_sequence_async(&card->dapm, 0);
1874 /* do we need to notify any clients that DAPM event is complete */
1875 list_for_each_entry(d, &card->dapm_list, list) {
1876 if (d->stream_event)
1877 d->stream_event(d, event);
1880 pop_dbg(card->dev, card->pop_time,
1881 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1882 pop_wait(card->pop_time);
1884 trace_snd_soc_dapm_done(card);
1889 #ifdef CONFIG_DEBUG_FS
1890 static ssize_t dapm_widget_power_read_file(struct file *file,
1891 char __user *user_buf,
1892 size_t count, loff_t *ppos)
1894 struct snd_soc_dapm_widget *w = file->private_data;
1898 struct snd_soc_dapm_path *p = NULL;
1900 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1904 in = is_connected_input_ep(w, NULL);
1905 dapm_clear_walk_input(w->dapm, &w->sources);
1906 out = is_connected_output_ep(w, NULL);
1907 dapm_clear_walk_output(w->dapm, &w->sinks);
1909 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1910 w->name, w->power ? "On" : "Off",
1911 w->force ? " (forced)" : "", in, out);
1914 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1915 " - R%d(0x%x) mask 0x%x",
1916 w->reg, w->reg, w->mask << w->shift);
1918 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1921 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1923 w->active ? "active" : "inactive");
1925 list_for_each_entry(p, &w->sources, list_sink) {
1926 if (p->connected && !p->connected(w, p->source))
1930 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1931 " in \"%s\" \"%s\"\n",
1932 p->name ? p->name : "static",
1935 list_for_each_entry(p, &w->sinks, list_source) {
1936 if (p->connected && !p->connected(w, p->sink))
1940 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1941 " out \"%s\" \"%s\"\n",
1942 p->name ? p->name : "static",
1946 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1952 static const struct file_operations dapm_widget_power_fops = {
1953 .open = simple_open,
1954 .read = dapm_widget_power_read_file,
1955 .llseek = default_llseek,
1958 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1959 size_t count, loff_t *ppos)
1961 struct snd_soc_dapm_context *dapm = file->private_data;
1964 switch (dapm->bias_level) {
1965 case SND_SOC_BIAS_ON:
1968 case SND_SOC_BIAS_PREPARE:
1969 level = "Prepare\n";
1971 case SND_SOC_BIAS_STANDBY:
1972 level = "Standby\n";
1974 case SND_SOC_BIAS_OFF:
1978 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
1979 level = "Unknown\n";
1983 return simple_read_from_buffer(user_buf, count, ppos, level,
1987 static const struct file_operations dapm_bias_fops = {
1988 .open = simple_open,
1989 .read = dapm_bias_read_file,
1990 .llseek = default_llseek,
1993 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1994 struct dentry *parent)
1998 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2000 if (!dapm->debugfs_dapm) {
2002 "ASoC: Failed to create DAPM debugfs directory\n");
2006 d = debugfs_create_file("bias_level", 0444,
2007 dapm->debugfs_dapm, dapm,
2011 "ASoC: Failed to create bias level debugfs file\n");
2014 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2016 struct snd_soc_dapm_context *dapm = w->dapm;
2019 if (!dapm->debugfs_dapm || !w->name)
2022 d = debugfs_create_file(w->name, 0444,
2023 dapm->debugfs_dapm, w,
2024 &dapm_widget_power_fops);
2026 dev_warn(w->dapm->dev,
2027 "ASoC: Failed to create %s debugfs file\n",
2031 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2033 debugfs_remove_recursive(dapm->debugfs_dapm);
2037 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2038 struct dentry *parent)
2042 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2046 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2052 /* test and update the power status of a mux widget */
2053 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2054 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2056 struct snd_soc_dapm_path *path;
2059 lockdep_assert_held(&card->dapm_mutex);
2061 /* find dapm widget path assoc with kcontrol */
2062 dapm_kcontrol_for_each_path(path, kcontrol) {
2063 if (!path->name || !e->texts[mux])
2067 /* we now need to match the string in the enum to the path */
2068 if (!(strcmp(path->name, e->texts[mux]))) {
2069 path->connect = 1; /* new connection */
2070 dapm_mark_dirty(path->source, "mux connection");
2073 dapm_mark_dirty(path->source,
2074 "mux disconnection");
2075 path->connect = 0; /* old connection must be powered down */
2077 dapm_mark_dirty(path->sink, "mux change");
2081 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2086 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2087 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2088 struct snd_soc_dapm_update *update)
2090 struct snd_soc_card *card = dapm->card;
2093 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2094 card->update = update;
2095 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2096 card->update = NULL;
2097 mutex_unlock(&card->dapm_mutex);
2099 soc_dpcm_runtime_update(card);
2102 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2104 /* test and update the power status of a mixer or switch widget */
2105 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2106 struct snd_kcontrol *kcontrol, int connect)
2108 struct snd_soc_dapm_path *path;
2111 lockdep_assert_held(&card->dapm_mutex);
2113 /* find dapm widget path assoc with kcontrol */
2114 dapm_kcontrol_for_each_path(path, kcontrol) {
2116 path->connect = connect;
2117 dapm_mark_dirty(path->source, "mixer connection");
2118 dapm_mark_dirty(path->sink, "mixer update");
2122 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2127 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2128 struct snd_kcontrol *kcontrol, int connect,
2129 struct snd_soc_dapm_update *update)
2131 struct snd_soc_card *card = dapm->card;
2134 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2135 card->update = update;
2136 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2137 card->update = NULL;
2138 mutex_unlock(&card->dapm_mutex);
2140 soc_dpcm_runtime_update(card);
2143 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2145 /* show dapm widget status in sys fs */
2146 static ssize_t dapm_widget_show(struct device *dev,
2147 struct device_attribute *attr, char *buf)
2149 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2150 struct snd_soc_codec *codec =rtd->codec;
2151 struct snd_soc_dapm_widget *w;
2153 char *state = "not set";
2155 list_for_each_entry(w, &codec->card->widgets, list) {
2156 if (w->dapm != &codec->dapm)
2159 /* only display widgets that burnm power */
2161 case snd_soc_dapm_hp:
2162 case snd_soc_dapm_mic:
2163 case snd_soc_dapm_spk:
2164 case snd_soc_dapm_line:
2165 case snd_soc_dapm_micbias:
2166 case snd_soc_dapm_dac:
2167 case snd_soc_dapm_adc:
2168 case snd_soc_dapm_pga:
2169 case snd_soc_dapm_out_drv:
2170 case snd_soc_dapm_mixer:
2171 case snd_soc_dapm_mixer_named_ctl:
2172 case snd_soc_dapm_supply:
2173 case snd_soc_dapm_regulator_supply:
2174 case snd_soc_dapm_clock_supply:
2176 count += sprintf(buf + count, "%s: %s\n",
2177 w->name, w->power ? "On":"Off");
2184 switch (codec->dapm.bias_level) {
2185 case SND_SOC_BIAS_ON:
2188 case SND_SOC_BIAS_PREPARE:
2191 case SND_SOC_BIAS_STANDBY:
2194 case SND_SOC_BIAS_OFF:
2198 count += sprintf(buf + count, "PM State: %s\n", state);
2203 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2205 int snd_soc_dapm_sys_add(struct device *dev)
2207 return device_create_file(dev, &dev_attr_dapm_widget);
2210 static void snd_soc_dapm_sys_remove(struct device *dev)
2212 device_remove_file(dev, &dev_attr_dapm_widget);
2215 static void dapm_free_path(struct snd_soc_dapm_path *path)
2217 list_del(&path->list_sink);
2218 list_del(&path->list_source);
2219 list_del(&path->list_kcontrol);
2220 list_del(&path->list);
2224 /* free all dapm widgets and resources */
2225 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2227 struct snd_soc_dapm_widget *w, *next_w;
2228 struct snd_soc_dapm_path *p, *next_p;
2230 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2231 if (w->dapm != dapm)
2235 * remove source and sink paths associated to this widget.
2236 * While removing the path, remove reference to it from both
2237 * source and sink widgets so that path is removed only once.
2239 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2242 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2245 kfree(w->kcontrols);
2251 static struct snd_soc_dapm_widget *dapm_find_widget(
2252 struct snd_soc_dapm_context *dapm, const char *pin,
2253 bool search_other_contexts)
2255 struct snd_soc_dapm_widget *w;
2256 struct snd_soc_dapm_widget *fallback = NULL;
2258 list_for_each_entry(w, &dapm->card->widgets, list) {
2259 if (!strcmp(w->name, pin)) {
2260 if (w->dapm == dapm)
2267 if (search_other_contexts)
2273 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2274 const char *pin, int status)
2276 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2278 dapm_assert_locked(dapm);
2281 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2285 if (w->connected != status)
2286 dapm_mark_dirty(w, "pin configuration");
2288 w->connected = status;
2296 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2297 * @dapm: DAPM context
2299 * Walks all dapm audio paths and powers widgets according to their
2300 * stream or path usage.
2302 * Requires external locking.
2304 * Returns 0 for success.
2306 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2309 * Suppress early reports (eg, jacks syncing their state) to avoid
2310 * silly DAPM runs during card startup.
2312 if (!dapm->card || !dapm->card->instantiated)
2315 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2317 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2320 * snd_soc_dapm_sync - scan and power dapm paths
2321 * @dapm: DAPM context
2323 * Walks all dapm audio paths and powers widgets according to their
2324 * stream or path usage.
2326 * Returns 0 for success.
2328 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2332 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2333 ret = snd_soc_dapm_sync_unlocked(dapm);
2334 mutex_unlock(&dapm->card->dapm_mutex);
2337 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2339 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2340 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2341 const char *control,
2342 int (*connected)(struct snd_soc_dapm_widget *source,
2343 struct snd_soc_dapm_widget *sink))
2345 struct snd_soc_dapm_path *path;
2348 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2352 path->source = wsource;
2354 path->connected = connected;
2355 INIT_LIST_HEAD(&path->list);
2356 INIT_LIST_HEAD(&path->list_kcontrol);
2357 INIT_LIST_HEAD(&path->list_source);
2358 INIT_LIST_HEAD(&path->list_sink);
2360 /* check for external widgets */
2361 if (wsink->id == snd_soc_dapm_input) {
2362 if (wsource->id == snd_soc_dapm_micbias ||
2363 wsource->id == snd_soc_dapm_mic ||
2364 wsource->id == snd_soc_dapm_line ||
2365 wsource->id == snd_soc_dapm_output)
2368 if (wsource->id == snd_soc_dapm_output) {
2369 if (wsink->id == snd_soc_dapm_spk ||
2370 wsink->id == snd_soc_dapm_hp ||
2371 wsink->id == snd_soc_dapm_line ||
2372 wsink->id == snd_soc_dapm_input)
2376 dapm_mark_dirty(wsource, "Route added");
2377 dapm_mark_dirty(wsink, "Route added");
2379 /* connect static paths */
2380 if (control == NULL) {
2381 list_add(&path->list, &dapm->card->paths);
2382 list_add(&path->list_sink, &wsink->sources);
2383 list_add(&path->list_source, &wsource->sinks);
2388 /* connect dynamic paths */
2389 switch (wsink->id) {
2390 case snd_soc_dapm_adc:
2391 case snd_soc_dapm_dac:
2392 case snd_soc_dapm_pga:
2393 case snd_soc_dapm_out_drv:
2394 case snd_soc_dapm_input:
2395 case snd_soc_dapm_output:
2396 case snd_soc_dapm_siggen:
2397 case snd_soc_dapm_micbias:
2398 case snd_soc_dapm_vmid:
2399 case snd_soc_dapm_pre:
2400 case snd_soc_dapm_post:
2401 case snd_soc_dapm_supply:
2402 case snd_soc_dapm_regulator_supply:
2403 case snd_soc_dapm_clock_supply:
2404 case snd_soc_dapm_aif_in:
2405 case snd_soc_dapm_aif_out:
2406 case snd_soc_dapm_dai_in:
2407 case snd_soc_dapm_dai_out:
2408 case snd_soc_dapm_dai_link:
2409 case snd_soc_dapm_kcontrol:
2410 list_add(&path->list, &dapm->card->paths);
2411 list_add(&path->list_sink, &wsink->sources);
2412 list_add(&path->list_source, &wsource->sinks);
2415 case snd_soc_dapm_mux:
2416 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2417 &wsink->kcontrol_news[0]);
2421 case snd_soc_dapm_switch:
2422 case snd_soc_dapm_mixer:
2423 case snd_soc_dapm_mixer_named_ctl:
2424 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2428 case snd_soc_dapm_hp:
2429 case snd_soc_dapm_mic:
2430 case snd_soc_dapm_line:
2431 case snd_soc_dapm_spk:
2432 list_add(&path->list, &dapm->card->paths);
2433 list_add(&path->list_sink, &wsink->sources);
2434 list_add(&path->list_source, &wsource->sinks);
2445 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2446 const struct snd_soc_dapm_route *route,
2447 unsigned int is_prefixed)
2449 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2450 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2453 char prefixed_sink[80];
2454 char prefixed_source[80];
2457 if (dapm->codec && dapm->codec->name_prefix && !is_prefixed) {
2458 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2459 dapm->codec->name_prefix, route->sink);
2460 sink = prefixed_sink;
2461 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2462 dapm->codec->name_prefix, route->source);
2463 source = prefixed_source;
2466 source = route->source;
2470 * find src and dest widgets over all widgets but favor a widget from
2471 * current DAPM context
2473 list_for_each_entry(w, &dapm->card->widgets, list) {
2474 if (!wsink && !(strcmp(w->name, sink))) {
2476 if (w->dapm == dapm)
2480 if (!wsource && !(strcmp(w->name, source))) {
2482 if (w->dapm == dapm)
2486 /* use widget from another DAPM context if not found from this */
2492 if (wsource == NULL) {
2493 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2497 if (wsink == NULL) {
2498 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2503 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2510 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2511 source, route->control, sink);
2515 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2516 const struct snd_soc_dapm_route *route)
2518 struct snd_soc_dapm_path *path, *p;
2521 char prefixed_sink[80];
2522 char prefixed_source[80];
2524 if (route->control) {
2526 "ASoC: Removal of routes with controls not supported\n");
2530 if (dapm->codec && dapm->codec->name_prefix) {
2531 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2532 dapm->codec->name_prefix, route->sink);
2533 sink = prefixed_sink;
2534 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2535 dapm->codec->name_prefix, route->source);
2536 source = prefixed_source;
2539 source = route->source;
2543 list_for_each_entry(p, &dapm->card->paths, list) {
2544 if (strcmp(p->source->name, source) != 0)
2546 if (strcmp(p->sink->name, sink) != 0)
2553 dapm_mark_dirty(path->source, "Route removed");
2554 dapm_mark_dirty(path->sink, "Route removed");
2556 dapm_free_path(path);
2558 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2566 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2567 * @dapm: DAPM context
2568 * @route: audio routes
2569 * @num: number of routes
2571 * Connects 2 dapm widgets together via a named audio path. The sink is
2572 * the widget receiving the audio signal, whilst the source is the sender
2573 * of the audio signal.
2575 * Returns 0 for success else error. On error all resources can be freed
2576 * with a call to snd_soc_card_free().
2578 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2579 const struct snd_soc_dapm_route *route, int num)
2583 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2584 for (i = 0; i < num; i++) {
2585 r = snd_soc_dapm_add_route(dapm, route, false);
2587 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2589 route->control ? route->control : "direct",
2595 mutex_unlock(&dapm->card->dapm_mutex);
2599 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2602 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2603 * @dapm: DAPM context
2604 * @route: audio routes
2605 * @num: number of routes
2607 * Removes routes from the DAPM context.
2609 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2610 const struct snd_soc_dapm_route *route, int num)
2614 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2615 for (i = 0; i < num; i++) {
2616 snd_soc_dapm_del_route(dapm, route);
2619 mutex_unlock(&dapm->card->dapm_mutex);
2623 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2625 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2626 const struct snd_soc_dapm_route *route)
2628 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2631 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2634 struct snd_soc_dapm_path *path;
2638 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2644 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2649 if (route->control || route->connected)
2650 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2651 route->source, route->sink);
2653 list_for_each_entry(path, &source->sinks, list_source) {
2654 if (path->sink == sink) {
2661 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2662 route->source, route->sink);
2664 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2665 count, route->source, route->sink);
2671 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2672 * @dapm: DAPM context
2673 * @route: audio routes
2674 * @num: number of routes
2676 * Mark existing routes matching those specified in the passed array
2677 * as being weak, meaning that they are ignored for the purpose of
2678 * power decisions. The main intended use case is for sidetone paths
2679 * which couple audio between other independent paths if they are both
2680 * active in order to make the combination work better at the user
2681 * level but which aren't intended to be "used".
2683 * Note that CODEC drivers should not use this as sidetone type paths
2684 * can frequently also be used as bypass paths.
2686 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2687 const struct snd_soc_dapm_route *route, int num)
2692 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2693 for (i = 0; i < num; i++) {
2694 err = snd_soc_dapm_weak_route(dapm, route);
2699 mutex_unlock(&dapm->card->dapm_mutex);
2703 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2706 * snd_soc_dapm_new_widgets - add new dapm widgets
2707 * @dapm: DAPM context
2709 * Checks the codec for any new dapm widgets and creates them if found.
2711 * Returns 0 for success.
2713 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2715 struct snd_soc_dapm_widget *w;
2718 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2720 list_for_each_entry(w, &card->widgets, list)
2725 if (w->num_kcontrols) {
2726 w->kcontrols = kzalloc(w->num_kcontrols *
2727 sizeof(struct snd_kcontrol *),
2729 if (!w->kcontrols) {
2730 mutex_unlock(&card->dapm_mutex);
2736 case snd_soc_dapm_switch:
2737 case snd_soc_dapm_mixer:
2738 case snd_soc_dapm_mixer_named_ctl:
2741 case snd_soc_dapm_mux:
2744 case snd_soc_dapm_pga:
2745 case snd_soc_dapm_out_drv:
2752 /* Read the initial power state from the device */
2754 soc_widget_read(w, w->reg, &val);
2755 val = val >> w->shift;
2757 if (val == w->on_val)
2763 dapm_mark_dirty(w, "new widget");
2764 dapm_debugfs_add_widget(w);
2767 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2768 mutex_unlock(&card->dapm_mutex);
2771 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2774 * snd_soc_dapm_get_volsw - dapm mixer get callback
2775 * @kcontrol: mixer control
2776 * @ucontrol: control element information
2778 * Callback to get the value of a dapm mixer control.
2780 * Returns 0 for success.
2782 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2783 struct snd_ctl_elem_value *ucontrol)
2785 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2786 struct snd_soc_card *card = codec->card;
2787 struct soc_mixer_control *mc =
2788 (struct soc_mixer_control *)kcontrol->private_value;
2790 unsigned int shift = mc->shift;
2792 unsigned int mask = (1 << fls(max)) - 1;
2793 unsigned int invert = mc->invert;
2796 if (snd_soc_volsw_is_stereo(mc))
2797 dev_warn(codec->dapm.dev,
2798 "ASoC: Control '%s' is stereo, which is not supported\n",
2801 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2802 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM)
2803 val = (snd_soc_read(codec, reg) >> shift) & mask;
2805 val = dapm_kcontrol_get_value(kcontrol);
2806 mutex_unlock(&card->dapm_mutex);
2809 ucontrol->value.integer.value[0] = max - val;
2811 ucontrol->value.integer.value[0] = val;
2815 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2818 * snd_soc_dapm_put_volsw - dapm mixer set callback
2819 * @kcontrol: mixer control
2820 * @ucontrol: control element information
2822 * Callback to set the value of a dapm mixer control.
2824 * Returns 0 for success.
2826 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2827 struct snd_ctl_elem_value *ucontrol)
2829 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2830 struct snd_soc_card *card = codec->card;
2831 struct soc_mixer_control *mc =
2832 (struct soc_mixer_control *)kcontrol->private_value;
2834 unsigned int shift = mc->shift;
2836 unsigned int mask = (1 << fls(max)) - 1;
2837 unsigned int invert = mc->invert;
2839 int connect, change;
2840 struct snd_soc_dapm_update update;
2843 if (snd_soc_volsw_is_stereo(mc))
2844 dev_warn(codec->dapm.dev,
2845 "ASoC: Control '%s' is stereo, which is not supported\n",
2848 val = (ucontrol->value.integer.value[0] & mask);
2854 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2856 change = dapm_kcontrol_set_value(kcontrol, val);
2858 if (reg != SND_SOC_NOPM) {
2859 mask = mask << shift;
2862 change = snd_soc_test_bits(codec, reg, mask, val);
2866 if (reg != SND_SOC_NOPM) {
2867 update.kcontrol = kcontrol;
2872 card->update = &update;
2875 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2877 card->update = NULL;
2880 mutex_unlock(&card->dapm_mutex);
2883 soc_dpcm_runtime_update(card);
2887 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2890 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2891 * @kcontrol: mixer control
2892 * @ucontrol: control element information
2894 * Callback to get the value of a dapm enumerated double mixer control.
2896 * Returns 0 for success.
2898 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2899 struct snd_ctl_elem_value *ucontrol)
2901 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2902 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2903 unsigned int reg_val, val;
2905 if (e->reg != SND_SOC_NOPM)
2906 reg_val = snd_soc_read(codec, e->reg);
2908 reg_val = dapm_kcontrol_get_value(kcontrol);
2910 val = (reg_val >> e->shift_l) & e->mask;
2911 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
2912 if (e->shift_l != e->shift_r) {
2913 val = (reg_val >> e->shift_r) & e->mask;
2914 val = snd_soc_enum_val_to_item(e, val);
2915 ucontrol->value.enumerated.item[1] = val;
2920 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2923 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2924 * @kcontrol: mixer control
2925 * @ucontrol: control element information
2927 * Callback to set the value of a dapm enumerated double mixer control.
2929 * Returns 0 for success.
2931 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2932 struct snd_ctl_elem_value *ucontrol)
2934 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2935 struct snd_soc_card *card = codec->card;
2936 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2937 unsigned int *item = ucontrol->value.enumerated.item;
2938 unsigned int val, change;
2940 struct snd_soc_dapm_update update;
2943 if (item[0] >= e->items)
2946 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2947 mask = e->mask << e->shift_l;
2948 if (e->shift_l != e->shift_r) {
2949 if (item[1] > e->items)
2951 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
2952 mask |= e->mask << e->shift_r;
2955 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2957 if (e->reg != SND_SOC_NOPM)
2958 change = snd_soc_test_bits(codec, e->reg, mask, val);
2960 change = dapm_kcontrol_set_value(kcontrol, val);
2963 if (e->reg != SND_SOC_NOPM) {
2964 update.kcontrol = kcontrol;
2965 update.reg = e->reg;
2968 card->update = &update;
2971 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
2973 card->update = NULL;
2976 mutex_unlock(&card->dapm_mutex);
2979 soc_dpcm_runtime_update(card);
2983 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2986 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2988 * @kcontrol: mixer control
2989 * @uinfo: control element information
2991 * Callback to provide information about a pin switch control.
2993 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2994 struct snd_ctl_elem_info *uinfo)
2996 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2998 uinfo->value.integer.min = 0;
2999 uinfo->value.integer.max = 1;
3003 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3006 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3008 * @kcontrol: mixer control
3011 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3012 struct snd_ctl_elem_value *ucontrol)
3014 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3015 const char *pin = (const char *)kcontrol->private_value;
3017 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3019 ucontrol->value.integer.value[0] =
3020 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3022 mutex_unlock(&card->dapm_mutex);
3026 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3029 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3031 * @kcontrol: mixer control
3034 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3035 struct snd_ctl_elem_value *ucontrol)
3037 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3038 const char *pin = (const char *)kcontrol->private_value;
3040 if (ucontrol->value.integer.value[0])
3041 snd_soc_dapm_enable_pin(&card->dapm, pin);
3043 snd_soc_dapm_disable_pin(&card->dapm, pin);
3045 snd_soc_dapm_sync(&card->dapm);
3048 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3050 static struct snd_soc_dapm_widget *
3051 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3052 const struct snd_soc_dapm_widget *widget)
3054 struct snd_soc_dapm_widget *w;
3057 if ((w = dapm_cnew_widget(widget)) == NULL)
3061 case snd_soc_dapm_regulator_supply:
3062 w->regulator = devm_regulator_get(dapm->dev, w->name);
3063 if (IS_ERR(w->regulator)) {
3064 ret = PTR_ERR(w->regulator);
3065 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3070 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3071 ret = regulator_allow_bypass(w->regulator, true);
3073 dev_warn(w->dapm->dev,
3074 "ASoC: Failed to bypass %s: %d\n",
3078 case snd_soc_dapm_clock_supply:
3079 #ifdef CONFIG_CLKDEV_LOOKUP
3080 w->clk = devm_clk_get(dapm->dev, w->name);
3081 if (IS_ERR(w->clk)) {
3082 ret = PTR_ERR(w->clk);
3083 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3095 if (dapm->codec && dapm->codec->name_prefix)
3096 w->name = kasprintf(GFP_KERNEL, "%s %s",
3097 dapm->codec->name_prefix, widget->name);
3099 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3101 if (w->name == NULL) {
3107 case snd_soc_dapm_switch:
3108 case snd_soc_dapm_mixer:
3109 case snd_soc_dapm_mixer_named_ctl:
3110 w->power_check = dapm_generic_check_power;
3112 case snd_soc_dapm_mux:
3113 w->power_check = dapm_generic_check_power;
3115 case snd_soc_dapm_dai_out:
3116 w->power_check = dapm_adc_check_power;
3118 case snd_soc_dapm_dai_in:
3119 w->power_check = dapm_dac_check_power;
3121 case snd_soc_dapm_adc:
3122 case snd_soc_dapm_aif_out:
3123 case snd_soc_dapm_dac:
3124 case snd_soc_dapm_aif_in:
3125 case snd_soc_dapm_pga:
3126 case snd_soc_dapm_out_drv:
3127 case snd_soc_dapm_input:
3128 case snd_soc_dapm_output:
3129 case snd_soc_dapm_micbias:
3130 case snd_soc_dapm_spk:
3131 case snd_soc_dapm_hp:
3132 case snd_soc_dapm_mic:
3133 case snd_soc_dapm_line:
3134 case snd_soc_dapm_dai_link:
3135 w->power_check = dapm_generic_check_power;
3137 case snd_soc_dapm_supply:
3138 case snd_soc_dapm_regulator_supply:
3139 case snd_soc_dapm_clock_supply:
3140 case snd_soc_dapm_kcontrol:
3141 w->power_check = dapm_supply_check_power;
3144 w->power_check = dapm_always_on_check_power;
3149 w->codec = dapm->codec;
3150 w->platform = dapm->platform;
3151 INIT_LIST_HEAD(&w->sources);
3152 INIT_LIST_HEAD(&w->sinks);
3153 INIT_LIST_HEAD(&w->list);
3154 INIT_LIST_HEAD(&w->dirty);
3155 list_add(&w->list, &dapm->card->widgets);
3157 /* machine layer set ups unconnected pins and insertions */
3163 * snd_soc_dapm_new_controls - create new dapm controls
3164 * @dapm: DAPM context
3165 * @widget: widget array
3166 * @num: number of widgets
3168 * Creates new DAPM controls based upon the templates.
3170 * Returns 0 for success else error.
3172 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3173 const struct snd_soc_dapm_widget *widget,
3176 struct snd_soc_dapm_widget *w;
3180 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3181 for (i = 0; i < num; i++) {
3182 w = snd_soc_dapm_new_control(dapm, widget);
3185 "ASoC: Failed to create DAPM control %s\n",
3192 mutex_unlock(&dapm->card->dapm_mutex);
3195 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3197 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3198 struct snd_kcontrol *kcontrol, int event)
3200 struct snd_soc_dapm_path *source_p, *sink_p;
3201 struct snd_soc_dai *source, *sink;
3202 const struct snd_soc_pcm_stream *config = w->params;
3203 struct snd_pcm_substream substream;
3204 struct snd_pcm_hw_params *params = NULL;
3208 if (WARN_ON(!config) ||
3209 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3212 /* We only support a single source and sink, pick the first */
3213 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3215 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3218 if (WARN_ON(!source_p || !sink_p) ||
3219 WARN_ON(!sink_p->source || !source_p->sink) ||
3220 WARN_ON(!source_p->source || !sink_p->sink))
3223 source = source_p->source->priv;
3224 sink = sink_p->sink->priv;
3226 /* Be a little careful as we don't want to overflow the mask array */
3227 if (config->formats) {
3228 fmt = ffs(config->formats) - 1;
3230 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3235 /* Currently very limited parameter selection */
3236 params = kzalloc(sizeof(*params), GFP_KERNEL);
3241 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3243 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3245 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3248 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3249 = config->channels_min;
3250 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3251 = config->channels_max;
3253 memset(&substream, 0, sizeof(substream));
3256 case SND_SOC_DAPM_PRE_PMU:
3257 if (source->driver->ops && source->driver->ops->hw_params) {
3258 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3259 ret = source->driver->ops->hw_params(&substream,
3262 dev_err(source->dev,
3263 "ASoC: hw_params() failed: %d\n", ret);
3268 if (sink->driver->ops && sink->driver->ops->hw_params) {
3269 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3270 ret = sink->driver->ops->hw_params(&substream, params,
3274 "ASoC: hw_params() failed: %d\n", ret);
3280 case SND_SOC_DAPM_POST_PMU:
3281 ret = snd_soc_dai_digital_mute(sink, 0,
3282 SNDRV_PCM_STREAM_PLAYBACK);
3283 if (ret != 0 && ret != -ENOTSUPP)
3284 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3288 case SND_SOC_DAPM_PRE_PMD:
3289 ret = snd_soc_dai_digital_mute(sink, 1,
3290 SNDRV_PCM_STREAM_PLAYBACK);
3291 if (ret != 0 && ret != -ENOTSUPP)
3292 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3297 WARN(1, "Unknown event %d\n", event);
3306 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3307 const struct snd_soc_pcm_stream *params,
3308 struct snd_soc_dapm_widget *source,
3309 struct snd_soc_dapm_widget *sink)
3311 struct snd_soc_dapm_route routes[2];
3312 struct snd_soc_dapm_widget template;
3313 struct snd_soc_dapm_widget *w;
3317 len = strlen(source->name) + strlen(sink->name) + 2;
3318 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3321 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3323 memset(&template, 0, sizeof(template));
3324 template.reg = SND_SOC_NOPM;
3325 template.id = snd_soc_dapm_dai_link;
3326 template.name = link_name;
3327 template.event = snd_soc_dai_link_event;
3328 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3329 SND_SOC_DAPM_PRE_PMD;
3331 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3333 w = snd_soc_dapm_new_control(&card->dapm, &template);
3335 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3342 memset(&routes, 0, sizeof(routes));
3344 routes[0].source = source->name;
3345 routes[0].sink = link_name;
3346 routes[1].source = link_name;
3347 routes[1].sink = sink->name;
3349 return snd_soc_dapm_add_routes(&card->dapm, routes,
3350 ARRAY_SIZE(routes));
3353 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3354 struct snd_soc_dai *dai)
3356 struct snd_soc_dapm_widget template;
3357 struct snd_soc_dapm_widget *w;
3359 WARN_ON(dapm->dev != dai->dev);
3361 memset(&template, 0, sizeof(template));
3362 template.reg = SND_SOC_NOPM;
3364 if (dai->driver->playback.stream_name) {
3365 template.id = snd_soc_dapm_dai_in;
3366 template.name = dai->driver->playback.stream_name;
3367 template.sname = dai->driver->playback.stream_name;
3369 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3372 w = snd_soc_dapm_new_control(dapm, &template);
3374 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3375 dai->driver->playback.stream_name);
3380 dai->playback_widget = w;
3383 if (dai->driver->capture.stream_name) {
3384 template.id = snd_soc_dapm_dai_out;
3385 template.name = dai->driver->capture.stream_name;
3386 template.sname = dai->driver->capture.stream_name;
3388 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3391 w = snd_soc_dapm_new_control(dapm, &template);
3393 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3394 dai->driver->capture.stream_name);
3399 dai->capture_widget = w;
3405 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3407 struct snd_soc_dapm_widget *dai_w, *w;
3408 struct snd_soc_dai *dai;
3410 /* For each DAI widget... */
3411 list_for_each_entry(dai_w, &card->widgets, list) {
3412 switch (dai_w->id) {
3413 case snd_soc_dapm_dai_in:
3414 case snd_soc_dapm_dai_out:
3422 /* ...find all widgets with the same stream and link them */
3423 list_for_each_entry(w, &card->widgets, list) {
3424 if (w->dapm != dai_w->dapm)
3428 case snd_soc_dapm_dai_in:
3429 case snd_soc_dapm_dai_out:
3435 if (!w->sname || !strstr(w->sname, dai_w->name))
3438 if (dai->driver->playback.stream_name &&
3440 dai->driver->playback.stream_name)) {
3441 dev_dbg(dai->dev, "%s -> %s\n",
3442 dai->playback_widget->name, w->name);
3444 snd_soc_dapm_add_path(w->dapm,
3445 dai->playback_widget, w, NULL, NULL);
3448 if (dai->driver->capture.stream_name &&
3450 dai->driver->capture.stream_name)) {
3451 dev_dbg(dai->dev, "%s -> %s\n",
3452 w->name, dai->capture_widget->name);
3454 snd_soc_dapm_add_path(w->dapm, w,
3455 dai->capture_widget, NULL, NULL);
3463 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3465 struct snd_soc_pcm_runtime *rtd = card->rtd;
3466 struct snd_soc_dai *cpu_dai, *codec_dai;
3467 struct snd_soc_dapm_route r;
3470 memset(&r, 0, sizeof(r));
3472 /* for each BE DAI link... */
3473 for (i = 0; i < card->num_rtd; i++) {
3474 rtd = &card->rtd[i];
3475 cpu_dai = rtd->cpu_dai;
3476 codec_dai = rtd->codec_dai;
3478 /* dynamic FE links have no fixed DAI mapping */
3479 if (rtd->dai_link->dynamic)
3482 /* there is no point in connecting BE DAI links with dummies */
3483 if (snd_soc_dai_is_dummy(codec_dai) ||
3484 snd_soc_dai_is_dummy(cpu_dai))
3487 /* connect BE DAI playback if widgets are valid */
3488 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3489 r.source = cpu_dai->playback_widget->name;
3490 r.sink = codec_dai->playback_widget->name;
3491 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3492 cpu_dai->codec->name, r.source,
3493 codec_dai->platform->name, r.sink);
3495 snd_soc_dapm_add_route(&card->dapm, &r, true);
3498 /* connect BE DAI capture if widgets are valid */
3499 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3500 r.source = codec_dai->capture_widget->name;
3501 r.sink = cpu_dai->capture_widget->name;
3502 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3503 codec_dai->codec->name, r.source,
3504 cpu_dai->platform->name, r.sink);
3506 snd_soc_dapm_add_route(&card->dapm, &r, true);
3512 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3516 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3517 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3518 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3520 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3521 w_cpu = cpu_dai->playback_widget;
3522 w_codec = codec_dai->playback_widget;
3524 w_cpu = cpu_dai->capture_widget;
3525 w_codec = codec_dai->capture_widget;
3530 dapm_mark_dirty(w_cpu, "stream event");
3533 case SND_SOC_DAPM_STREAM_START:
3536 case SND_SOC_DAPM_STREAM_STOP:
3539 case SND_SOC_DAPM_STREAM_SUSPEND:
3540 case SND_SOC_DAPM_STREAM_RESUME:
3541 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3542 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3549 dapm_mark_dirty(w_codec, "stream event");
3552 case SND_SOC_DAPM_STREAM_START:
3553 w_codec->active = 1;
3555 case SND_SOC_DAPM_STREAM_STOP:
3556 w_codec->active = 0;
3558 case SND_SOC_DAPM_STREAM_SUSPEND:
3559 case SND_SOC_DAPM_STREAM_RESUME:
3560 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3561 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3566 dapm_power_widgets(rtd->card, event);
3570 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3571 * @rtd: PCM runtime data
3572 * @stream: stream name
3573 * @event: stream event
3575 * Sends a stream event to the dapm core. The core then makes any
3576 * necessary widget power changes.
3578 * Returns 0 for success else error.
3580 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3583 struct snd_soc_card *card = rtd->card;
3585 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3586 soc_dapm_stream_event(rtd, stream, event);
3587 mutex_unlock(&card->dapm_mutex);
3591 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3592 * @dapm: DAPM context
3595 * Enables input/output pin and its parents or children widgets iff there is
3596 * a valid audio route and active audio stream.
3598 * Requires external locking.
3600 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3601 * do any widget power switching.
3603 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3606 return snd_soc_dapm_set_pin(dapm, pin, 1);
3608 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3611 * snd_soc_dapm_enable_pin - enable pin.
3612 * @dapm: DAPM context
3615 * Enables input/output pin and its parents or children widgets iff there is
3616 * a valid audio route and active audio stream.
3618 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3619 * do any widget power switching.
3621 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3625 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3627 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3629 mutex_unlock(&dapm->card->dapm_mutex);
3633 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3636 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3637 * @dapm: DAPM context
3640 * Enables input/output pin regardless of any other state. This is
3641 * intended for use with microphone bias supplies used in microphone
3644 * Requires external locking.
3646 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3647 * do any widget power switching.
3649 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3652 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3655 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3659 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3662 dapm_mark_dirty(w, "force enable");
3666 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3669 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3670 * @dapm: DAPM context
3673 * Enables input/output pin regardless of any other state. This is
3674 * intended for use with microphone bias supplies used in microphone
3677 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3678 * do any widget power switching.
3680 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3685 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3687 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
3689 mutex_unlock(&dapm->card->dapm_mutex);
3693 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3696 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3697 * @dapm: DAPM context
3700 * Disables input/output pin and its parents or children widgets.
3702 * Requires external locking.
3704 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3705 * do any widget power switching.
3707 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3710 return snd_soc_dapm_set_pin(dapm, pin, 0);
3712 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
3715 * snd_soc_dapm_disable_pin - disable pin.
3716 * @dapm: DAPM context
3719 * Disables input/output pin and its parents or children widgets.
3721 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3722 * do any widget power switching.
3724 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3729 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3731 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3733 mutex_unlock(&dapm->card->dapm_mutex);
3737 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3740 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3741 * @dapm: DAPM context
3744 * Marks the specified pin as being not connected, disabling it along
3745 * any parent or child widgets. At present this is identical to
3746 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3747 * additional things such as disabling controls which only affect
3748 * paths through the pin.
3750 * Requires external locking.
3752 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3753 * do any widget power switching.
3755 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
3758 return snd_soc_dapm_set_pin(dapm, pin, 0);
3760 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
3763 * snd_soc_dapm_nc_pin - permanently disable pin.
3764 * @dapm: DAPM context
3767 * Marks the specified pin as being not connected, disabling it along
3768 * any parent or child widgets. At present this is identical to
3769 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3770 * additional things such as disabling controls which only affect
3771 * paths through the pin.
3773 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3774 * do any widget power switching.
3776 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3780 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3782 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3784 mutex_unlock(&dapm->card->dapm_mutex);
3788 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3791 * snd_soc_dapm_get_pin_status - get audio pin status
3792 * @dapm: DAPM context
3793 * @pin: audio signal pin endpoint (or start point)
3795 * Get audio pin status - connected or disconnected.
3797 * Returns 1 for connected otherwise 0.
3799 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3802 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3805 return w->connected;
3809 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3812 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3813 * @dapm: DAPM context
3814 * @pin: audio signal pin endpoint (or start point)
3816 * Mark the given endpoint or pin as ignoring suspend. When the
3817 * system is disabled a path between two endpoints flagged as ignoring
3818 * suspend will not be disabled. The path must already be enabled via
3819 * normal means at suspend time, it will not be turned on if it was not
3822 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3825 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3828 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3832 w->ignore_suspend = 1;
3836 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3838 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3839 struct snd_soc_dapm_widget *w)
3841 struct snd_soc_dapm_path *p;
3843 list_for_each_entry(p, &card->paths, list) {
3844 if ((p->source == w) || (p->sink == w)) {
3846 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3847 p->source->name, p->source->id, p->source->dapm,
3848 p->sink->name, p->sink->id, p->sink->dapm);
3850 /* Connected to something other than the codec */
3851 if (p->source->dapm != p->sink->dapm)
3854 * Loopback connection from codec external pin to
3855 * codec external pin
3857 if (p->sink->id == snd_soc_dapm_input) {
3858 switch (p->source->id) {
3859 case snd_soc_dapm_output:
3860 case snd_soc_dapm_micbias:
3873 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3874 * @codec: The codec whose pins should be processed
3876 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3877 * which are unused. Pins are used if they are connected externally to the
3878 * codec, whether that be to some other device, or a loop-back connection to
3881 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3883 struct snd_soc_card *card = codec->card;
3884 struct snd_soc_dapm_context *dapm = &codec->dapm;
3885 struct snd_soc_dapm_widget *w;
3887 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3888 &card->dapm, &codec->dapm);
3890 list_for_each_entry(w, &card->widgets, list) {
3891 if (w->dapm != dapm)
3894 case snd_soc_dapm_input:
3895 case snd_soc_dapm_output:
3896 case snd_soc_dapm_micbias:
3897 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3899 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3901 "... Not in map; disabling\n");
3902 snd_soc_dapm_nc_pin(dapm, w->name);
3912 * snd_soc_dapm_free - free dapm resources
3913 * @dapm: DAPM context
3915 * Free all dapm widgets and resources.
3917 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3919 snd_soc_dapm_sys_remove(dapm->dev);
3920 dapm_debugfs_cleanup(dapm);
3921 dapm_free_widgets(dapm);
3922 list_del(&dapm->list);
3924 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3926 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
3928 struct snd_soc_card *card = dapm->card;
3929 struct snd_soc_dapm_widget *w;
3930 LIST_HEAD(down_list);
3933 mutex_lock(&card->dapm_mutex);
3935 list_for_each_entry(w, &dapm->card->widgets, list) {
3936 if (w->dapm != dapm)
3939 dapm_seq_insert(w, &down_list, false);
3945 /* If there were no widgets to power down we're already in
3949 if (dapm->bias_level == SND_SOC_BIAS_ON)
3950 snd_soc_dapm_set_bias_level(dapm,
3951 SND_SOC_BIAS_PREPARE);
3952 dapm_seq_run(card, &down_list, 0, false);
3953 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3954 snd_soc_dapm_set_bias_level(dapm,
3955 SND_SOC_BIAS_STANDBY);
3958 mutex_unlock(&card->dapm_mutex);
3962 * snd_soc_dapm_shutdown - callback for system shutdown
3964 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3966 struct snd_soc_dapm_context *dapm;
3968 list_for_each_entry(dapm, &card->dapm_list, list) {
3969 if (dapm != &card->dapm) {
3970 soc_dapm_shutdown_dapm(dapm);
3971 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
3972 snd_soc_dapm_set_bias_level(dapm,
3977 soc_dapm_shutdown_dapm(&card->dapm);
3978 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3979 snd_soc_dapm_set_bias_level(&card->dapm,
3983 /* Module information */
3984 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3985 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3986 MODULE_LICENSE("GPL");