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);
262 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
263 const struct snd_kcontrol *kcontrol)
265 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
270 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
271 struct snd_soc_dapm_widget *widget)
273 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
274 struct snd_soc_dapm_widget_list *new_wlist;
278 n = data->wlist->num_widgets + 1;
282 new_wlist = krealloc(data->wlist,
283 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
287 new_wlist->widgets[n - 1] = widget;
288 new_wlist->num_widgets = n;
290 data->wlist = new_wlist;
295 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
296 struct snd_soc_dapm_path *path)
298 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
300 list_add_tail(&path->list_kcontrol, &data->paths);
303 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
304 path->source, NULL, NULL);
308 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
310 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
315 return data->widget->power;
318 static struct list_head *dapm_kcontrol_get_path_list(
319 const struct snd_kcontrol *kcontrol)
321 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
326 #define dapm_kcontrol_for_each_path(path, kcontrol) \
327 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
330 static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
332 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
337 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
340 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
342 if (data->value == value)
346 data->widget->on_val = value;
354 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
355 * @kcontrol: The kcontrol
357 struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
359 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec;
361 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
363 static void dapm_reset(struct snd_soc_card *card)
365 struct snd_soc_dapm_widget *w;
367 lockdep_assert_held(&card->dapm_mutex);
369 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
371 list_for_each_entry(w, &card->widgets, list) {
372 w->new_power = w->power;
373 w->power_checked = false;
379 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg,
383 *value = snd_soc_read(w->codec, reg);
385 } else if (w->platform) {
386 *value = snd_soc_platform_read(w->platform, reg);
390 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
394 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg,
398 return snd_soc_write(w->codec, reg, val);
399 else if (w->platform)
400 return snd_soc_platform_write(w->platform, reg, val);
402 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
406 static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
408 if (w->codec && !w->codec->using_regmap)
409 mutex_lock(&w->codec->mutex);
410 else if (w->platform)
411 mutex_lock(&w->platform->mutex);
414 static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
416 if (w->codec && !w->codec->using_regmap)
417 mutex_unlock(&w->codec->mutex);
418 else if (w->platform)
419 mutex_unlock(&w->platform->mutex);
422 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
424 if (dapm->codec && dapm->codec->using_regmap)
425 regmap_async_complete(dapm->codec->control_data);
428 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
429 unsigned short reg, unsigned int mask, unsigned int value)
432 unsigned int old, new;
435 if (w->codec && w->codec->using_regmap) {
436 ret = regmap_update_bits_check_async(w->codec->control_data,
443 ret = soc_widget_read(w, reg, &old);
445 soc_widget_unlock(w);
449 new = (old & ~mask) | (value & mask);
452 ret = soc_widget_write(w, reg, new);
454 soc_widget_unlock(w);
458 soc_widget_unlock(w);
465 * snd_soc_dapm_set_bias_level - set the bias level for the system
466 * @dapm: DAPM context
467 * @level: level to configure
469 * Configure the bias (power) levels for the SoC audio device.
471 * Returns 0 for success else error.
473 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
474 enum snd_soc_bias_level level)
476 struct snd_soc_card *card = dapm->card;
479 trace_snd_soc_bias_level_start(card, level);
481 if (card && card->set_bias_level)
482 ret = card->set_bias_level(card, dapm, level);
487 if (dapm->codec->driver->set_bias_level)
488 ret = dapm->codec->driver->set_bias_level(dapm->codec,
491 dapm->bias_level = level;
492 } else if (!card || dapm != &card->dapm) {
493 dapm->bias_level = level;
499 if (card && card->set_bias_level_post)
500 ret = card->set_bias_level_post(card, dapm, level);
502 trace_snd_soc_bias_level_done(card, level);
507 /* connect mux widget to its interconnecting audio paths */
508 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
509 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
510 struct snd_soc_dapm_path *path, const char *control_name,
511 const struct snd_kcontrol_new *kcontrol)
513 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
514 unsigned int val, item;
517 if (e->reg != SND_SOC_NOPM) {
518 soc_widget_read(dest, e->reg, &val);
519 val = (val >> e->shift_l) & e->mask;
520 item = snd_soc_enum_val_to_item(e, val);
522 /* since a virtual mux has no backing registers to
523 * decide which path to connect, it will try to match
524 * with the first enumeration. This is to ensure
525 * that the default mux choice (the first) will be
526 * correctly powered up during initialization.
531 for (i = 0; i < e->items; i++) {
532 if (!(strcmp(control_name, e->texts[i]))) {
533 list_add(&path->list, &dapm->card->paths);
534 list_add(&path->list_sink, &dest->sources);
535 list_add(&path->list_source, &src->sinks);
536 path->name = (char*)e->texts[i];
548 /* set up initial codec paths */
549 static void dapm_set_mixer_path_status(struct snd_soc_dapm_widget *w,
550 struct snd_soc_dapm_path *p, int i)
552 struct soc_mixer_control *mc = (struct soc_mixer_control *)
553 w->kcontrol_news[i].private_value;
554 unsigned int reg = mc->reg;
555 unsigned int shift = mc->shift;
556 unsigned int max = mc->max;
557 unsigned int mask = (1 << fls(max)) - 1;
558 unsigned int invert = mc->invert;
561 if (reg != SND_SOC_NOPM) {
562 soc_widget_read(w, reg, &val);
563 val = (val >> shift) & mask;
572 /* connect mixer widget to its interconnecting audio paths */
573 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
574 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
575 struct snd_soc_dapm_path *path, const char *control_name)
579 /* search for mixer kcontrol */
580 for (i = 0; i < dest->num_kcontrols; i++) {
581 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
582 list_add(&path->list, &dapm->card->paths);
583 list_add(&path->list_sink, &dest->sources);
584 list_add(&path->list_source, &src->sinks);
585 path->name = dest->kcontrol_news[i].name;
586 dapm_set_mixer_path_status(dest, path, i);
593 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
594 struct snd_soc_dapm_widget *kcontrolw,
595 const struct snd_kcontrol_new *kcontrol_new,
596 struct snd_kcontrol **kcontrol)
598 struct snd_soc_dapm_widget *w;
603 list_for_each_entry(w, &dapm->card->widgets, list) {
604 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
606 for (i = 0; i < w->num_kcontrols; i++) {
607 if (&w->kcontrol_news[i] == kcontrol_new) {
609 *kcontrol = w->kcontrols[i];
619 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
620 * create it. Either way, add the widget into the control's widget list
622 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
625 struct snd_soc_dapm_context *dapm = w->dapm;
626 struct snd_card *card = dapm->card->snd_card;
630 struct snd_kcontrol *kcontrol;
631 bool wname_in_long_name, kcname_in_long_name;
637 prefix = dapm->codec->name_prefix;
642 prefix_len = strlen(prefix) + 1;
646 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
651 wname_in_long_name = false;
652 kcname_in_long_name = true;
655 case snd_soc_dapm_switch:
656 case snd_soc_dapm_mixer:
657 wname_in_long_name = true;
658 kcname_in_long_name = true;
660 case snd_soc_dapm_mixer_named_ctl:
661 wname_in_long_name = false;
662 kcname_in_long_name = true;
664 case snd_soc_dapm_mux:
665 wname_in_long_name = true;
666 kcname_in_long_name = false;
673 if (wname_in_long_name && kcname_in_long_name) {
675 * The control will get a prefix from the control
676 * creation process but we're also using the same
677 * prefix for widgets so cut the prefix off the
678 * front of the widget name.
680 long_name = kasprintf(GFP_KERNEL, "%s %s",
681 w->name + prefix_len,
682 w->kcontrol_news[kci].name);
683 if (long_name == NULL)
687 } else if (wname_in_long_name) {
689 name = w->name + prefix_len;
692 name = w->kcontrol_news[kci].name;
695 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
700 kcontrol->private_free = dapm_kcontrol_free;
702 ret = dapm_kcontrol_data_alloc(w, kcontrol);
704 snd_ctl_free_one(kcontrol);
708 ret = snd_ctl_add(card, kcontrol);
711 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
717 ret = dapm_kcontrol_add_widget(kcontrol, w);
721 w->kcontrols[kci] = kcontrol;
726 /* create new dapm mixer control */
727 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
730 struct snd_soc_dapm_path *path;
733 for (i = 0; i < w->num_kcontrols; i++) {
735 list_for_each_entry(path, &w->sources, list_sink) {
736 /* mixer/mux paths name must match control name */
737 if (path->name != (char *)w->kcontrol_news[i].name)
740 if (w->kcontrols[i]) {
741 dapm_kcontrol_add_path(w->kcontrols[i], path);
745 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
749 dapm_kcontrol_add_path(w->kcontrols[i], path);
756 /* create new dapm mux control */
757 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
759 struct snd_soc_dapm_context *dapm = w->dapm;
760 struct snd_soc_dapm_path *path;
763 if (w->num_kcontrols != 1) {
765 "ASoC: mux %s has incorrect number of controls\n",
770 if (list_empty(&w->sources)) {
771 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
775 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
779 list_for_each_entry(path, &w->sources, list_sink)
780 dapm_kcontrol_add_path(w->kcontrols[0], path);
785 /* create new dapm volume control */
786 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
788 if (w->num_kcontrols)
789 dev_err(w->dapm->dev,
790 "ASoC: PGA controls not supported: '%s'\n", w->name);
795 /* reset 'walked' bit for each dapm path */
796 static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
797 struct list_head *sink)
799 struct snd_soc_dapm_path *p;
801 list_for_each_entry(p, sink, list_source) {
804 dapm_clear_walk_output(dapm, &p->sink->sinks);
809 static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
810 struct list_head *source)
812 struct snd_soc_dapm_path *p;
814 list_for_each_entry(p, source, list_sink) {
817 dapm_clear_walk_input(dapm, &p->source->sources);
823 /* We implement power down on suspend by checking the power state of
824 * the ALSA card - when we are suspending the ALSA state for the card
827 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
829 int level = snd_power_get_state(widget->dapm->card->snd_card);
832 case SNDRV_CTL_POWER_D3hot:
833 case SNDRV_CTL_POWER_D3cold:
834 if (widget->ignore_suspend)
835 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
837 return widget->ignore_suspend;
843 /* add widget to list if it's not already in the list */
844 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
845 struct snd_soc_dapm_widget *w)
847 struct snd_soc_dapm_widget_list *wlist;
848 int wlistsize, wlistentries, i;
855 /* is this widget already in the list */
856 for (i = 0; i < wlist->num_widgets; i++) {
857 if (wlist->widgets[i] == w)
861 /* allocate some new space */
862 wlistentries = wlist->num_widgets + 1;
863 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
864 wlistentries * sizeof(struct snd_soc_dapm_widget *);
865 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
867 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
873 /* insert the widget */
874 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
875 w->name, wlist->num_widgets);
877 wlist->widgets[wlist->num_widgets] = w;
878 wlist->num_widgets++;
883 * Recursively check for a completed path to an active or physically connected
884 * output widget. Returns number of complete paths.
886 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
887 struct snd_soc_dapm_widget_list **list)
889 struct snd_soc_dapm_path *path;
892 if (widget->outputs >= 0)
893 return widget->outputs;
895 DAPM_UPDATE_STAT(widget, path_checks);
897 switch (widget->id) {
898 case snd_soc_dapm_supply:
899 case snd_soc_dapm_regulator_supply:
900 case snd_soc_dapm_clock_supply:
901 case snd_soc_dapm_kcontrol:
907 switch (widget->id) {
908 case snd_soc_dapm_adc:
909 case snd_soc_dapm_aif_out:
910 case snd_soc_dapm_dai_out:
911 if (widget->active) {
912 widget->outputs = snd_soc_dapm_suspend_check(widget);
913 return widget->outputs;
919 if (widget->connected) {
920 /* connected pin ? */
921 if (widget->id == snd_soc_dapm_output && !widget->ext) {
922 widget->outputs = snd_soc_dapm_suspend_check(widget);
923 return widget->outputs;
926 /* connected jack or spk ? */
927 if (widget->id == snd_soc_dapm_hp ||
928 widget->id == snd_soc_dapm_spk ||
929 (widget->id == snd_soc_dapm_line &&
930 !list_empty(&widget->sources))) {
931 widget->outputs = snd_soc_dapm_suspend_check(widget);
932 return widget->outputs;
936 list_for_each_entry(path, &widget->sinks, list_source) {
937 DAPM_UPDATE_STAT(widget, neighbour_checks);
948 trace_snd_soc_dapm_output_path(widget, path);
950 if (path->sink && path->connect) {
954 /* do we need to add this widget to the list ? */
957 err = dapm_list_add_widget(list, path->sink);
959 dev_err(widget->dapm->dev,
960 "ASoC: could not add widget %s\n",
967 con += is_connected_output_ep(path->sink, list);
973 widget->outputs = con;
979 * Recursively check for a completed path to an active or physically connected
980 * input widget. Returns number of complete paths.
982 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
983 struct snd_soc_dapm_widget_list **list)
985 struct snd_soc_dapm_path *path;
988 if (widget->inputs >= 0)
989 return widget->inputs;
991 DAPM_UPDATE_STAT(widget, path_checks);
993 switch (widget->id) {
994 case snd_soc_dapm_supply:
995 case snd_soc_dapm_regulator_supply:
996 case snd_soc_dapm_clock_supply:
997 case snd_soc_dapm_kcontrol:
1003 /* active stream ? */
1004 switch (widget->id) {
1005 case snd_soc_dapm_dac:
1006 case snd_soc_dapm_aif_in:
1007 case snd_soc_dapm_dai_in:
1008 if (widget->active) {
1009 widget->inputs = snd_soc_dapm_suspend_check(widget);
1010 return widget->inputs;
1016 if (widget->connected) {
1017 /* connected pin ? */
1018 if (widget->id == snd_soc_dapm_input && !widget->ext) {
1019 widget->inputs = snd_soc_dapm_suspend_check(widget);
1020 return widget->inputs;
1023 /* connected VMID/Bias for lower pops */
1024 if (widget->id == snd_soc_dapm_vmid) {
1025 widget->inputs = snd_soc_dapm_suspend_check(widget);
1026 return widget->inputs;
1029 /* connected jack ? */
1030 if (widget->id == snd_soc_dapm_mic ||
1031 (widget->id == snd_soc_dapm_line &&
1032 !list_empty(&widget->sinks))) {
1033 widget->inputs = snd_soc_dapm_suspend_check(widget);
1034 return widget->inputs;
1037 /* signal generator */
1038 if (widget->id == snd_soc_dapm_siggen) {
1039 widget->inputs = snd_soc_dapm_suspend_check(widget);
1040 return widget->inputs;
1044 list_for_each_entry(path, &widget->sources, list_sink) {
1045 DAPM_UPDATE_STAT(widget, neighbour_checks);
1056 trace_snd_soc_dapm_input_path(widget, path);
1058 if (path->source && path->connect) {
1062 /* do we need to add this widget to the list ? */
1065 err = dapm_list_add_widget(list, path->source);
1067 dev_err(widget->dapm->dev,
1068 "ASoC: could not add widget %s\n",
1075 con += is_connected_input_ep(path->source, list);
1081 widget->inputs = con;
1087 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1088 * @dai: the soc DAI.
1089 * @stream: stream direction.
1090 * @list: list of active widgets for this stream.
1092 * Queries DAPM graph as to whether an valid audio stream path exists for
1093 * the initial stream specified by name. This takes into account
1094 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1096 * Returns the number of valid paths or negative error.
1098 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1099 struct snd_soc_dapm_widget_list **list)
1101 struct snd_soc_card *card = dai->card;
1104 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1107 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1108 paths = is_connected_output_ep(dai->playback_widget, list);
1109 dapm_clear_walk_output(&card->dapm,
1110 &dai->playback_widget->sinks);
1112 paths = is_connected_input_ep(dai->capture_widget, list);
1113 dapm_clear_walk_input(&card->dapm,
1114 &dai->capture_widget->sources);
1117 trace_snd_soc_dapm_connected(paths, stream);
1118 mutex_unlock(&card->dapm_mutex);
1124 * Handler for generic register modifier widget.
1126 int dapm_reg_event(struct snd_soc_dapm_widget *w,
1127 struct snd_kcontrol *kcontrol, int event)
1131 if (SND_SOC_DAPM_EVENT_ON(event))
1136 soc_widget_update_bits_locked(w, -(w->reg + 1),
1137 w->mask << w->shift, val << w->shift);
1141 EXPORT_SYMBOL_GPL(dapm_reg_event);
1144 * Handler for regulator supply widget.
1146 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1147 struct snd_kcontrol *kcontrol, int event)
1151 soc_dapm_async_complete(w->dapm);
1153 if (SND_SOC_DAPM_EVENT_ON(event)) {
1154 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1155 ret = regulator_allow_bypass(w->regulator, false);
1157 dev_warn(w->dapm->dev,
1158 "ASoC: Failed to unbypass %s: %d\n",
1162 return regulator_enable(w->regulator);
1164 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1165 ret = regulator_allow_bypass(w->regulator, true);
1167 dev_warn(w->dapm->dev,
1168 "ASoC: Failed to bypass %s: %d\n",
1172 return regulator_disable_deferred(w->regulator, w->shift);
1175 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1178 * Handler for clock supply widget.
1180 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1181 struct snd_kcontrol *kcontrol, int event)
1186 soc_dapm_async_complete(w->dapm);
1188 #ifdef CONFIG_HAVE_CLK
1189 if (SND_SOC_DAPM_EVENT_ON(event)) {
1190 return clk_prepare_enable(w->clk);
1192 clk_disable_unprepare(w->clk);
1198 EXPORT_SYMBOL_GPL(dapm_clock_event);
1200 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1202 if (w->power_checked)
1203 return w->new_power;
1208 w->new_power = w->power_check(w);
1210 w->power_checked = true;
1212 return w->new_power;
1215 /* Generic check to see if a widget should be powered.
1217 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1221 DAPM_UPDATE_STAT(w, power_checks);
1223 in = is_connected_input_ep(w, NULL);
1224 dapm_clear_walk_input(w->dapm, &w->sources);
1225 out = is_connected_output_ep(w, NULL);
1226 dapm_clear_walk_output(w->dapm, &w->sinks);
1227 return out != 0 && in != 0;
1230 /* Check to see if an ADC has power */
1231 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1235 DAPM_UPDATE_STAT(w, power_checks);
1238 in = is_connected_input_ep(w, NULL);
1239 dapm_clear_walk_input(w->dapm, &w->sources);
1242 return dapm_generic_check_power(w);
1246 /* Check to see if a DAC has power */
1247 static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1251 DAPM_UPDATE_STAT(w, power_checks);
1254 out = is_connected_output_ep(w, NULL);
1255 dapm_clear_walk_output(w->dapm, &w->sinks);
1258 return dapm_generic_check_power(w);
1262 /* Check to see if a power supply is needed */
1263 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1265 struct snd_soc_dapm_path *path;
1267 DAPM_UPDATE_STAT(w, power_checks);
1269 /* Check if one of our outputs is connected */
1270 list_for_each_entry(path, &w->sinks, list_source) {
1271 DAPM_UPDATE_STAT(w, neighbour_checks);
1276 if (path->connected &&
1277 !path->connected(path->source, path->sink))
1283 if (dapm_widget_power_check(path->sink))
1290 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1295 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1296 struct snd_soc_dapm_widget *b,
1304 sort = dapm_down_seq;
1306 if (sort[a->id] != sort[b->id])
1307 return sort[a->id] - sort[b->id];
1308 if (a->subseq != b->subseq) {
1310 return a->subseq - b->subseq;
1312 return b->subseq - a->subseq;
1314 if (a->reg != b->reg)
1315 return a->reg - b->reg;
1316 if (a->dapm != b->dapm)
1317 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1322 /* Insert a widget in order into a DAPM power sequence. */
1323 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1324 struct list_head *list,
1327 struct snd_soc_dapm_widget *w;
1329 list_for_each_entry(w, list, power_list)
1330 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1331 list_add_tail(&new_widget->power_list, &w->power_list);
1335 list_add_tail(&new_widget->power_list, list);
1338 static void dapm_seq_check_event(struct snd_soc_card *card,
1339 struct snd_soc_dapm_widget *w, int event)
1341 const char *ev_name;
1345 case SND_SOC_DAPM_PRE_PMU:
1346 ev_name = "PRE_PMU";
1349 case SND_SOC_DAPM_POST_PMU:
1350 ev_name = "POST_PMU";
1353 case SND_SOC_DAPM_PRE_PMD:
1354 ev_name = "PRE_PMD";
1357 case SND_SOC_DAPM_POST_PMD:
1358 ev_name = "POST_PMD";
1361 case SND_SOC_DAPM_WILL_PMU:
1362 ev_name = "WILL_PMU";
1365 case SND_SOC_DAPM_WILL_PMD:
1366 ev_name = "WILL_PMD";
1370 WARN(1, "Unknown event %d\n", event);
1374 if (w->new_power != power)
1377 if (w->event && (w->event_flags & event)) {
1378 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1380 soc_dapm_async_complete(w->dapm);
1381 trace_snd_soc_dapm_widget_event_start(w, event);
1382 ret = w->event(w, NULL, event);
1383 trace_snd_soc_dapm_widget_event_done(w, event);
1385 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1386 ev_name, w->name, ret);
1390 /* Apply the coalesced changes from a DAPM sequence */
1391 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1392 struct list_head *pending)
1394 struct snd_soc_dapm_widget *w;
1396 unsigned int value = 0;
1397 unsigned int mask = 0;
1399 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1402 list_for_each_entry(w, pending, power_list) {
1403 WARN_ON(reg != w->reg);
1404 w->power = w->new_power;
1406 mask |= w->mask << w->shift;
1408 value |= w->on_val << w->shift;
1410 value |= w->off_val << w->shift;
1412 pop_dbg(w->dapm->dev, card->pop_time,
1413 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1414 w->name, reg, value, mask);
1416 /* Check for events */
1417 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1418 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1422 /* Any widget will do, they should all be updating the
1425 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1428 pop_dbg(w->dapm->dev, card->pop_time,
1429 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1430 value, mask, reg, card->pop_time);
1431 pop_wait(card->pop_time);
1432 soc_widget_update_bits_locked(w, reg, mask, value);
1435 list_for_each_entry(w, pending, power_list) {
1436 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1437 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1441 /* Apply a DAPM power sequence.
1443 * We walk over a pre-sorted list of widgets to apply power to. In
1444 * order to minimise the number of writes to the device required
1445 * multiple widgets will be updated in a single write where possible.
1446 * Currently anything that requires more than a single write is not
1449 static void dapm_seq_run(struct snd_soc_card *card,
1450 struct list_head *list, int event, bool power_up)
1452 struct snd_soc_dapm_widget *w, *n;
1453 struct snd_soc_dapm_context *d;
1456 int cur_subseq = -1;
1457 int cur_reg = SND_SOC_NOPM;
1458 struct snd_soc_dapm_context *cur_dapm = NULL;
1465 sort = dapm_down_seq;
1467 list_for_each_entry_safe(w, n, list, power_list) {
1470 /* Do we need to apply any queued changes? */
1471 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1472 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1473 if (!list_empty(&pending))
1474 dapm_seq_run_coalesced(card, &pending);
1476 if (cur_dapm && cur_dapm->seq_notifier) {
1477 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1478 if (sort[i] == cur_sort)
1479 cur_dapm->seq_notifier(cur_dapm,
1484 if (cur_dapm && w->dapm != cur_dapm)
1485 soc_dapm_async_complete(cur_dapm);
1487 INIT_LIST_HEAD(&pending);
1489 cur_subseq = INT_MIN;
1490 cur_reg = SND_SOC_NOPM;
1495 case snd_soc_dapm_pre:
1497 list_for_each_entry_safe_continue(w, n, list,
1500 if (event == SND_SOC_DAPM_STREAM_START)
1502 NULL, SND_SOC_DAPM_PRE_PMU);
1503 else if (event == SND_SOC_DAPM_STREAM_STOP)
1505 NULL, SND_SOC_DAPM_PRE_PMD);
1508 case snd_soc_dapm_post:
1510 list_for_each_entry_safe_continue(w, n, list,
1513 if (event == SND_SOC_DAPM_STREAM_START)
1515 NULL, SND_SOC_DAPM_POST_PMU);
1516 else if (event == SND_SOC_DAPM_STREAM_STOP)
1518 NULL, SND_SOC_DAPM_POST_PMD);
1522 /* Queue it up for application */
1523 cur_sort = sort[w->id];
1524 cur_subseq = w->subseq;
1527 list_move(&w->power_list, &pending);
1532 dev_err(w->dapm->dev,
1533 "ASoC: Failed to apply widget power: %d\n", ret);
1536 if (!list_empty(&pending))
1537 dapm_seq_run_coalesced(card, &pending);
1539 if (cur_dapm && cur_dapm->seq_notifier) {
1540 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1541 if (sort[i] == cur_sort)
1542 cur_dapm->seq_notifier(cur_dapm,
1546 list_for_each_entry(d, &card->dapm_list, list) {
1547 soc_dapm_async_complete(d);
1551 static void dapm_widget_update(struct snd_soc_card *card)
1553 struct snd_soc_dapm_update *update = card->update;
1554 struct snd_soc_dapm_widget_list *wlist;
1555 struct snd_soc_dapm_widget *w = NULL;
1559 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1562 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1564 for (wi = 0; wi < wlist->num_widgets; wi++) {
1565 w = wlist->widgets[wi];
1567 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1568 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1570 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1578 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
1581 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1584 for (wi = 0; wi < wlist->num_widgets; wi++) {
1585 w = wlist->widgets[wi];
1587 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1588 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1590 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1596 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1597 * they're changing state.
1599 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1601 struct snd_soc_dapm_context *d = data;
1604 /* If we're off and we're not supposed to be go into STANDBY */
1605 if (d->bias_level == SND_SOC_BIAS_OFF &&
1606 d->target_bias_level != SND_SOC_BIAS_OFF) {
1608 pm_runtime_get_sync(d->dev);
1610 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1613 "ASoC: Failed to turn on bias: %d\n", ret);
1616 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1617 if (d->bias_level != d->target_bias_level) {
1618 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1621 "ASoC: Failed to prepare bias: %d\n", ret);
1625 /* Async callback run prior to DAPM sequences - brings to their final
1628 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1630 struct snd_soc_dapm_context *d = data;
1633 /* If we just powered the last thing off drop to standby bias */
1634 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1635 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1636 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1637 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1639 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1643 /* If we're in standby and can support bias off then do that */
1644 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1645 d->target_bias_level == SND_SOC_BIAS_OFF) {
1646 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1648 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1652 pm_runtime_put(d->dev);
1655 /* If we just powered up then move to active bias */
1656 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1657 d->target_bias_level == SND_SOC_BIAS_ON) {
1658 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1660 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1665 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1666 bool power, bool connect)
1668 /* If a connection is being made or broken then that update
1669 * will have marked the peer dirty, otherwise the widgets are
1670 * not connected and this update has no impact. */
1674 /* If the peer is already in the state we're moving to then we
1675 * won't have an impact on it. */
1676 if (power != peer->power)
1677 dapm_mark_dirty(peer, "peer state change");
1680 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1681 struct list_head *up_list,
1682 struct list_head *down_list)
1684 struct snd_soc_dapm_path *path;
1686 if (w->power == power)
1689 trace_snd_soc_dapm_widget_power(w, power);
1691 /* If we changed our power state perhaps our neigbours changed
1694 list_for_each_entry(path, &w->sources, list_sink) {
1696 dapm_widget_set_peer_power(path->source, power,
1701 case snd_soc_dapm_supply:
1702 case snd_soc_dapm_regulator_supply:
1703 case snd_soc_dapm_clock_supply:
1704 case snd_soc_dapm_kcontrol:
1705 /* Supplies can't affect their outputs, only their inputs */
1708 list_for_each_entry(path, &w->sinks, list_source) {
1710 dapm_widget_set_peer_power(path->sink, power,
1718 dapm_seq_insert(w, up_list, true);
1720 dapm_seq_insert(w, down_list, false);
1723 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1724 struct list_head *up_list,
1725 struct list_head *down_list)
1730 case snd_soc_dapm_pre:
1731 dapm_seq_insert(w, down_list, false);
1733 case snd_soc_dapm_post:
1734 dapm_seq_insert(w, up_list, true);
1738 power = dapm_widget_power_check(w);
1740 dapm_widget_set_power(w, power, up_list, down_list);
1746 * Scan each dapm widget for complete audio path.
1747 * A complete path is a route that has valid endpoints i.e.:-
1749 * o DAC to output pin.
1750 * o Input Pin to ADC.
1751 * o Input pin to Output pin (bypass, sidetone)
1752 * o DAC to ADC (loopback).
1754 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1756 struct snd_soc_dapm_widget *w;
1757 struct snd_soc_dapm_context *d;
1759 LIST_HEAD(down_list);
1760 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1761 enum snd_soc_bias_level bias;
1763 lockdep_assert_held(&card->dapm_mutex);
1765 trace_snd_soc_dapm_start(card);
1767 list_for_each_entry(d, &card->dapm_list, list) {
1768 if (d->idle_bias_off)
1769 d->target_bias_level = SND_SOC_BIAS_OFF;
1771 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1776 /* Check which widgets we need to power and store them in
1777 * lists indicating if they should be powered up or down. We
1778 * only check widgets that have been flagged as dirty but note
1779 * that new widgets may be added to the dirty list while we
1782 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1783 dapm_power_one_widget(w, &up_list, &down_list);
1786 list_for_each_entry(w, &card->widgets, list) {
1788 case snd_soc_dapm_pre:
1789 case snd_soc_dapm_post:
1790 /* These widgets always need to be powered */
1793 list_del_init(&w->dirty);
1800 /* Supplies and micbiases only bring the
1801 * context up to STANDBY as unless something
1802 * else is active and passing audio they
1803 * generally don't require full power. Signal
1804 * generators are virtual pins and have no
1805 * power impact themselves.
1808 case snd_soc_dapm_siggen:
1809 case snd_soc_dapm_vmid:
1811 case snd_soc_dapm_supply:
1812 case snd_soc_dapm_regulator_supply:
1813 case snd_soc_dapm_clock_supply:
1814 case snd_soc_dapm_micbias:
1815 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1816 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1819 d->target_bias_level = SND_SOC_BIAS_ON;
1826 /* Force all contexts in the card to the same bias state if
1827 * they're not ground referenced.
1829 bias = SND_SOC_BIAS_OFF;
1830 list_for_each_entry(d, &card->dapm_list, list)
1831 if (d->target_bias_level > bias)
1832 bias = d->target_bias_level;
1833 list_for_each_entry(d, &card->dapm_list, list)
1834 if (!d->idle_bias_off)
1835 d->target_bias_level = bias;
1837 trace_snd_soc_dapm_walk_done(card);
1839 /* Run card bias changes at first */
1840 dapm_pre_sequence_async(&card->dapm, 0);
1841 /* Run other bias changes in parallel */
1842 list_for_each_entry(d, &card->dapm_list, list) {
1843 if (d != &card->dapm)
1844 async_schedule_domain(dapm_pre_sequence_async, d,
1847 async_synchronize_full_domain(&async_domain);
1849 list_for_each_entry(w, &down_list, power_list) {
1850 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1853 list_for_each_entry(w, &up_list, power_list) {
1854 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1857 /* Power down widgets first; try to avoid amplifying pops. */
1858 dapm_seq_run(card, &down_list, event, false);
1860 dapm_widget_update(card);
1863 dapm_seq_run(card, &up_list, event, true);
1865 /* Run all the bias changes in parallel */
1866 list_for_each_entry(d, &card->dapm_list, list) {
1867 if (d != &card->dapm)
1868 async_schedule_domain(dapm_post_sequence_async, d,
1871 async_synchronize_full_domain(&async_domain);
1872 /* Run card bias changes at last */
1873 dapm_post_sequence_async(&card->dapm, 0);
1875 /* do we need to notify any clients that DAPM event is complete */
1876 list_for_each_entry(d, &card->dapm_list, list) {
1877 if (d->stream_event)
1878 d->stream_event(d, event);
1881 pop_dbg(card->dev, card->pop_time,
1882 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1883 pop_wait(card->pop_time);
1885 trace_snd_soc_dapm_done(card);
1890 #ifdef CONFIG_DEBUG_FS
1891 static ssize_t dapm_widget_power_read_file(struct file *file,
1892 char __user *user_buf,
1893 size_t count, loff_t *ppos)
1895 struct snd_soc_dapm_widget *w = file->private_data;
1899 struct snd_soc_dapm_path *p = NULL;
1901 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1905 in = is_connected_input_ep(w, NULL);
1906 dapm_clear_walk_input(w->dapm, &w->sources);
1907 out = is_connected_output_ep(w, NULL);
1908 dapm_clear_walk_output(w->dapm, &w->sinks);
1910 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1911 w->name, w->power ? "On" : "Off",
1912 w->force ? " (forced)" : "", in, out);
1915 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1916 " - R%d(0x%x) mask 0x%x",
1917 w->reg, w->reg, w->mask << w->shift);
1919 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1922 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1924 w->active ? "active" : "inactive");
1926 list_for_each_entry(p, &w->sources, list_sink) {
1927 if (p->connected && !p->connected(w, p->source))
1931 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1932 " in \"%s\" \"%s\"\n",
1933 p->name ? p->name : "static",
1936 list_for_each_entry(p, &w->sinks, list_source) {
1937 if (p->connected && !p->connected(w, p->sink))
1941 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1942 " out \"%s\" \"%s\"\n",
1943 p->name ? p->name : "static",
1947 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1953 static const struct file_operations dapm_widget_power_fops = {
1954 .open = simple_open,
1955 .read = dapm_widget_power_read_file,
1956 .llseek = default_llseek,
1959 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1960 size_t count, loff_t *ppos)
1962 struct snd_soc_dapm_context *dapm = file->private_data;
1965 switch (dapm->bias_level) {
1966 case SND_SOC_BIAS_ON:
1969 case SND_SOC_BIAS_PREPARE:
1970 level = "Prepare\n";
1972 case SND_SOC_BIAS_STANDBY:
1973 level = "Standby\n";
1975 case SND_SOC_BIAS_OFF:
1979 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
1980 level = "Unknown\n";
1984 return simple_read_from_buffer(user_buf, count, ppos, level,
1988 static const struct file_operations dapm_bias_fops = {
1989 .open = simple_open,
1990 .read = dapm_bias_read_file,
1991 .llseek = default_llseek,
1994 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1995 struct dentry *parent)
1999 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2001 if (!dapm->debugfs_dapm) {
2003 "ASoC: Failed to create DAPM debugfs directory\n");
2007 d = debugfs_create_file("bias_level", 0444,
2008 dapm->debugfs_dapm, dapm,
2012 "ASoC: Failed to create bias level debugfs file\n");
2015 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2017 struct snd_soc_dapm_context *dapm = w->dapm;
2020 if (!dapm->debugfs_dapm || !w->name)
2023 d = debugfs_create_file(w->name, 0444,
2024 dapm->debugfs_dapm, w,
2025 &dapm_widget_power_fops);
2027 dev_warn(w->dapm->dev,
2028 "ASoC: Failed to create %s debugfs file\n",
2032 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2034 debugfs_remove_recursive(dapm->debugfs_dapm);
2038 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2039 struct dentry *parent)
2043 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2047 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2053 /* test and update the power status of a mux widget */
2054 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2055 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2057 struct snd_soc_dapm_path *path;
2060 lockdep_assert_held(&card->dapm_mutex);
2062 /* find dapm widget path assoc with kcontrol */
2063 dapm_kcontrol_for_each_path(path, kcontrol) {
2064 if (!path->name || !e->texts[mux])
2068 /* we now need to match the string in the enum to the path */
2069 if (!(strcmp(path->name, e->texts[mux]))) {
2070 path->connect = 1; /* new connection */
2071 dapm_mark_dirty(path->source, "mux connection");
2074 dapm_mark_dirty(path->source,
2075 "mux disconnection");
2076 path->connect = 0; /* old connection must be powered down */
2078 dapm_mark_dirty(path->sink, "mux change");
2082 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2087 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2088 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2089 struct snd_soc_dapm_update *update)
2091 struct snd_soc_card *card = dapm->card;
2094 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2095 card->update = update;
2096 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2097 card->update = NULL;
2098 mutex_unlock(&card->dapm_mutex);
2100 soc_dpcm_runtime_update(card);
2103 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2105 /* test and update the power status of a mixer or switch widget */
2106 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2107 struct snd_kcontrol *kcontrol, int connect)
2109 struct snd_soc_dapm_path *path;
2112 lockdep_assert_held(&card->dapm_mutex);
2114 /* find dapm widget path assoc with kcontrol */
2115 dapm_kcontrol_for_each_path(path, kcontrol) {
2117 path->connect = connect;
2118 dapm_mark_dirty(path->source, "mixer connection");
2119 dapm_mark_dirty(path->sink, "mixer update");
2123 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2128 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2129 struct snd_kcontrol *kcontrol, int connect,
2130 struct snd_soc_dapm_update *update)
2132 struct snd_soc_card *card = dapm->card;
2135 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2136 card->update = update;
2137 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2138 card->update = NULL;
2139 mutex_unlock(&card->dapm_mutex);
2141 soc_dpcm_runtime_update(card);
2144 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2146 /* show dapm widget status in sys fs */
2147 static ssize_t dapm_widget_show(struct device *dev,
2148 struct device_attribute *attr, char *buf)
2150 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2151 struct snd_soc_codec *codec =rtd->codec;
2152 struct snd_soc_dapm_widget *w;
2154 char *state = "not set";
2156 list_for_each_entry(w, &codec->card->widgets, list) {
2157 if (w->dapm != &codec->dapm)
2160 /* only display widgets that burnm power */
2162 case snd_soc_dapm_hp:
2163 case snd_soc_dapm_mic:
2164 case snd_soc_dapm_spk:
2165 case snd_soc_dapm_line:
2166 case snd_soc_dapm_micbias:
2167 case snd_soc_dapm_dac:
2168 case snd_soc_dapm_adc:
2169 case snd_soc_dapm_pga:
2170 case snd_soc_dapm_out_drv:
2171 case snd_soc_dapm_mixer:
2172 case snd_soc_dapm_mixer_named_ctl:
2173 case snd_soc_dapm_supply:
2174 case snd_soc_dapm_regulator_supply:
2175 case snd_soc_dapm_clock_supply:
2177 count += sprintf(buf + count, "%s: %s\n",
2178 w->name, w->power ? "On":"Off");
2185 switch (codec->dapm.bias_level) {
2186 case SND_SOC_BIAS_ON:
2189 case SND_SOC_BIAS_PREPARE:
2192 case SND_SOC_BIAS_STANDBY:
2195 case SND_SOC_BIAS_OFF:
2199 count += sprintf(buf + count, "PM State: %s\n", state);
2204 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2206 int snd_soc_dapm_sys_add(struct device *dev)
2208 return device_create_file(dev, &dev_attr_dapm_widget);
2211 static void snd_soc_dapm_sys_remove(struct device *dev)
2213 device_remove_file(dev, &dev_attr_dapm_widget);
2216 static void dapm_free_path(struct snd_soc_dapm_path *path)
2218 list_del(&path->list_sink);
2219 list_del(&path->list_source);
2220 list_del(&path->list_kcontrol);
2221 list_del(&path->list);
2225 /* free all dapm widgets and resources */
2226 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2228 struct snd_soc_dapm_widget *w, *next_w;
2229 struct snd_soc_dapm_path *p, *next_p;
2231 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2232 if (w->dapm != dapm)
2236 * remove source and sink paths associated to this widget.
2237 * While removing the path, remove reference to it from both
2238 * source and sink widgets so that path is removed only once.
2240 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2243 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2246 kfree(w->kcontrols);
2252 static struct snd_soc_dapm_widget *dapm_find_widget(
2253 struct snd_soc_dapm_context *dapm, const char *pin,
2254 bool search_other_contexts)
2256 struct snd_soc_dapm_widget *w;
2257 struct snd_soc_dapm_widget *fallback = NULL;
2259 list_for_each_entry(w, &dapm->card->widgets, list) {
2260 if (!strcmp(w->name, pin)) {
2261 if (w->dapm == dapm)
2268 if (search_other_contexts)
2274 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2275 const char *pin, int status)
2277 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2279 dapm_assert_locked(dapm);
2282 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2286 if (w->connected != status)
2287 dapm_mark_dirty(w, "pin configuration");
2289 w->connected = status;
2297 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2298 * @dapm: DAPM context
2300 * Walks all dapm audio paths and powers widgets according to their
2301 * stream or path usage.
2303 * Requires external locking.
2305 * Returns 0 for success.
2307 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2310 * Suppress early reports (eg, jacks syncing their state) to avoid
2311 * silly DAPM runs during card startup.
2313 if (!dapm->card || !dapm->card->instantiated)
2316 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2318 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2321 * snd_soc_dapm_sync - scan and power dapm paths
2322 * @dapm: DAPM context
2324 * Walks all dapm audio paths and powers widgets according to their
2325 * stream or path usage.
2327 * Returns 0 for success.
2329 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2333 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2334 ret = snd_soc_dapm_sync_unlocked(dapm);
2335 mutex_unlock(&dapm->card->dapm_mutex);
2338 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2340 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2341 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2342 const char *control,
2343 int (*connected)(struct snd_soc_dapm_widget *source,
2344 struct snd_soc_dapm_widget *sink))
2346 struct snd_soc_dapm_path *path;
2349 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2353 path->source = wsource;
2355 path->connected = connected;
2356 INIT_LIST_HEAD(&path->list);
2357 INIT_LIST_HEAD(&path->list_kcontrol);
2358 INIT_LIST_HEAD(&path->list_source);
2359 INIT_LIST_HEAD(&path->list_sink);
2361 /* check for external widgets */
2362 if (wsink->id == snd_soc_dapm_input) {
2363 if (wsource->id == snd_soc_dapm_micbias ||
2364 wsource->id == snd_soc_dapm_mic ||
2365 wsource->id == snd_soc_dapm_line ||
2366 wsource->id == snd_soc_dapm_output)
2369 if (wsource->id == snd_soc_dapm_output) {
2370 if (wsink->id == snd_soc_dapm_spk ||
2371 wsink->id == snd_soc_dapm_hp ||
2372 wsink->id == snd_soc_dapm_line ||
2373 wsink->id == snd_soc_dapm_input)
2377 dapm_mark_dirty(wsource, "Route added");
2378 dapm_mark_dirty(wsink, "Route added");
2380 /* connect static paths */
2381 if (control == NULL) {
2382 list_add(&path->list, &dapm->card->paths);
2383 list_add(&path->list_sink, &wsink->sources);
2384 list_add(&path->list_source, &wsource->sinks);
2389 /* connect dynamic paths */
2390 switch (wsink->id) {
2391 case snd_soc_dapm_adc:
2392 case snd_soc_dapm_dac:
2393 case snd_soc_dapm_pga:
2394 case snd_soc_dapm_out_drv:
2395 case snd_soc_dapm_input:
2396 case snd_soc_dapm_output:
2397 case snd_soc_dapm_siggen:
2398 case snd_soc_dapm_micbias:
2399 case snd_soc_dapm_vmid:
2400 case snd_soc_dapm_pre:
2401 case snd_soc_dapm_post:
2402 case snd_soc_dapm_supply:
2403 case snd_soc_dapm_regulator_supply:
2404 case snd_soc_dapm_clock_supply:
2405 case snd_soc_dapm_aif_in:
2406 case snd_soc_dapm_aif_out:
2407 case snd_soc_dapm_dai_in:
2408 case snd_soc_dapm_dai_out:
2409 case snd_soc_dapm_dai_link:
2410 case snd_soc_dapm_kcontrol:
2411 list_add(&path->list, &dapm->card->paths);
2412 list_add(&path->list_sink, &wsink->sources);
2413 list_add(&path->list_source, &wsource->sinks);
2416 case snd_soc_dapm_mux:
2417 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2418 &wsink->kcontrol_news[0]);
2422 case snd_soc_dapm_switch:
2423 case snd_soc_dapm_mixer:
2424 case snd_soc_dapm_mixer_named_ctl:
2425 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2429 case snd_soc_dapm_hp:
2430 case snd_soc_dapm_mic:
2431 case snd_soc_dapm_line:
2432 case snd_soc_dapm_spk:
2433 list_add(&path->list, &dapm->card->paths);
2434 list_add(&path->list_sink, &wsink->sources);
2435 list_add(&path->list_source, &wsource->sinks);
2446 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2447 const struct snd_soc_dapm_route *route,
2448 unsigned int is_prefixed)
2450 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2451 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2454 char prefixed_sink[80];
2455 char prefixed_source[80];
2458 if (dapm->codec && dapm->codec->name_prefix && !is_prefixed) {
2459 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2460 dapm->codec->name_prefix, route->sink);
2461 sink = prefixed_sink;
2462 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2463 dapm->codec->name_prefix, route->source);
2464 source = prefixed_source;
2467 source = route->source;
2471 * find src and dest widgets over all widgets but favor a widget from
2472 * current DAPM context
2474 list_for_each_entry(w, &dapm->card->widgets, list) {
2475 if (!wsink && !(strcmp(w->name, sink))) {
2477 if (w->dapm == dapm)
2481 if (!wsource && !(strcmp(w->name, source))) {
2483 if (w->dapm == dapm)
2487 /* use widget from another DAPM context if not found from this */
2493 if (wsource == NULL) {
2494 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2498 if (wsink == NULL) {
2499 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2504 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2511 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2512 source, route->control, sink);
2516 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2517 const struct snd_soc_dapm_route *route)
2519 struct snd_soc_dapm_path *path, *p;
2522 char prefixed_sink[80];
2523 char prefixed_source[80];
2525 if (route->control) {
2527 "ASoC: Removal of routes with controls not supported\n");
2531 if (dapm->codec && dapm->codec->name_prefix) {
2532 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2533 dapm->codec->name_prefix, route->sink);
2534 sink = prefixed_sink;
2535 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2536 dapm->codec->name_prefix, route->source);
2537 source = prefixed_source;
2540 source = route->source;
2544 list_for_each_entry(p, &dapm->card->paths, list) {
2545 if (strcmp(p->source->name, source) != 0)
2547 if (strcmp(p->sink->name, sink) != 0)
2554 dapm_mark_dirty(path->source, "Route removed");
2555 dapm_mark_dirty(path->sink, "Route removed");
2557 dapm_free_path(path);
2559 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2567 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2568 * @dapm: DAPM context
2569 * @route: audio routes
2570 * @num: number of routes
2572 * Connects 2 dapm widgets together via a named audio path. The sink is
2573 * the widget receiving the audio signal, whilst the source is the sender
2574 * of the audio signal.
2576 * Returns 0 for success else error. On error all resources can be freed
2577 * with a call to snd_soc_card_free().
2579 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2580 const struct snd_soc_dapm_route *route, int num)
2584 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2585 for (i = 0; i < num; i++) {
2586 r = snd_soc_dapm_add_route(dapm, route, false);
2588 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2590 route->control ? route->control : "direct",
2596 mutex_unlock(&dapm->card->dapm_mutex);
2600 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2603 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2604 * @dapm: DAPM context
2605 * @route: audio routes
2606 * @num: number of routes
2608 * Removes routes from the DAPM context.
2610 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2611 const struct snd_soc_dapm_route *route, int num)
2615 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2616 for (i = 0; i < num; i++) {
2617 snd_soc_dapm_del_route(dapm, route);
2620 mutex_unlock(&dapm->card->dapm_mutex);
2624 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2626 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2627 const struct snd_soc_dapm_route *route)
2629 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2632 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2635 struct snd_soc_dapm_path *path;
2639 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2645 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2650 if (route->control || route->connected)
2651 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2652 route->source, route->sink);
2654 list_for_each_entry(path, &source->sinks, list_source) {
2655 if (path->sink == sink) {
2662 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2663 route->source, route->sink);
2665 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2666 count, route->source, route->sink);
2672 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2673 * @dapm: DAPM context
2674 * @route: audio routes
2675 * @num: number of routes
2677 * Mark existing routes matching those specified in the passed array
2678 * as being weak, meaning that they are ignored for the purpose of
2679 * power decisions. The main intended use case is for sidetone paths
2680 * which couple audio between other independent paths if they are both
2681 * active in order to make the combination work better at the user
2682 * level but which aren't intended to be "used".
2684 * Note that CODEC drivers should not use this as sidetone type paths
2685 * can frequently also be used as bypass paths.
2687 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2688 const struct snd_soc_dapm_route *route, int num)
2693 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2694 for (i = 0; i < num; i++) {
2695 err = snd_soc_dapm_weak_route(dapm, route);
2700 mutex_unlock(&dapm->card->dapm_mutex);
2704 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2707 * snd_soc_dapm_new_widgets - add new dapm widgets
2708 * @dapm: DAPM context
2710 * Checks the codec for any new dapm widgets and creates them if found.
2712 * Returns 0 for success.
2714 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2716 struct snd_soc_dapm_widget *w;
2719 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2721 list_for_each_entry(w, &card->widgets, list)
2726 if (w->num_kcontrols) {
2727 w->kcontrols = kzalloc(w->num_kcontrols *
2728 sizeof(struct snd_kcontrol *),
2730 if (!w->kcontrols) {
2731 mutex_unlock(&card->dapm_mutex);
2737 case snd_soc_dapm_switch:
2738 case snd_soc_dapm_mixer:
2739 case snd_soc_dapm_mixer_named_ctl:
2742 case snd_soc_dapm_mux:
2745 case snd_soc_dapm_pga:
2746 case snd_soc_dapm_out_drv:
2753 /* Read the initial power state from the device */
2755 soc_widget_read(w, w->reg, &val);
2756 val = val >> w->shift;
2758 if (val == w->on_val)
2764 dapm_mark_dirty(w, "new widget");
2765 dapm_debugfs_add_widget(w);
2768 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2769 mutex_unlock(&card->dapm_mutex);
2772 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2775 * snd_soc_dapm_get_volsw - dapm mixer get callback
2776 * @kcontrol: mixer control
2777 * @ucontrol: control element information
2779 * Callback to get the value of a dapm mixer control.
2781 * Returns 0 for success.
2783 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2784 struct snd_ctl_elem_value *ucontrol)
2786 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2787 struct snd_soc_card *card = codec->card;
2788 struct soc_mixer_control *mc =
2789 (struct soc_mixer_control *)kcontrol->private_value;
2791 unsigned int shift = mc->shift;
2793 unsigned int mask = (1 << fls(max)) - 1;
2794 unsigned int invert = mc->invert;
2797 if (snd_soc_volsw_is_stereo(mc))
2798 dev_warn(codec->dapm.dev,
2799 "ASoC: Control '%s' is stereo, which is not supported\n",
2802 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2803 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM)
2804 val = (snd_soc_read(codec, reg) >> shift) & mask;
2806 val = dapm_kcontrol_get_value(kcontrol);
2807 mutex_unlock(&card->dapm_mutex);
2810 ucontrol->value.integer.value[0] = max - val;
2812 ucontrol->value.integer.value[0] = val;
2816 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2819 * snd_soc_dapm_put_volsw - dapm mixer set callback
2820 * @kcontrol: mixer control
2821 * @ucontrol: control element information
2823 * Callback to set the value of a dapm mixer control.
2825 * Returns 0 for success.
2827 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2828 struct snd_ctl_elem_value *ucontrol)
2830 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2831 struct snd_soc_card *card = codec->card;
2832 struct soc_mixer_control *mc =
2833 (struct soc_mixer_control *)kcontrol->private_value;
2835 unsigned int shift = mc->shift;
2837 unsigned int mask = (1 << fls(max)) - 1;
2838 unsigned int invert = mc->invert;
2840 int connect, change;
2841 struct snd_soc_dapm_update update;
2844 if (snd_soc_volsw_is_stereo(mc))
2845 dev_warn(codec->dapm.dev,
2846 "ASoC: Control '%s' is stereo, which is not supported\n",
2849 val = (ucontrol->value.integer.value[0] & mask);
2855 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2857 change = dapm_kcontrol_set_value(kcontrol, val);
2859 if (reg != SND_SOC_NOPM) {
2860 mask = mask << shift;
2863 change = snd_soc_test_bits(codec, reg, mask, val);
2867 if (reg != SND_SOC_NOPM) {
2868 update.kcontrol = kcontrol;
2873 card->update = &update;
2876 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2878 card->update = NULL;
2881 mutex_unlock(&card->dapm_mutex);
2884 soc_dpcm_runtime_update(card);
2888 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2891 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2892 * @kcontrol: mixer control
2893 * @ucontrol: control element information
2895 * Callback to get the value of a dapm enumerated double mixer control.
2897 * Returns 0 for success.
2899 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2900 struct snd_ctl_elem_value *ucontrol)
2902 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2903 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2904 unsigned int reg_val, val;
2906 if (e->reg != SND_SOC_NOPM)
2907 reg_val = snd_soc_read(codec, e->reg);
2909 reg_val = dapm_kcontrol_get_value(kcontrol);
2911 val = (reg_val >> e->shift_l) & e->mask;
2912 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
2913 if (e->shift_l != e->shift_r) {
2914 val = (reg_val >> e->shift_r) & e->mask;
2915 val = snd_soc_enum_val_to_item(e, val);
2916 ucontrol->value.enumerated.item[1] = val;
2921 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2924 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2925 * @kcontrol: mixer control
2926 * @ucontrol: control element information
2928 * Callback to set the value of a dapm enumerated double mixer control.
2930 * Returns 0 for success.
2932 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2933 struct snd_ctl_elem_value *ucontrol)
2935 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2936 struct snd_soc_card *card = codec->card;
2937 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2938 unsigned int *item = ucontrol->value.enumerated.item;
2939 unsigned int val, change;
2941 struct snd_soc_dapm_update update;
2944 if (item[0] >= e->items)
2947 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2948 mask = e->mask << e->shift_l;
2949 if (e->shift_l != e->shift_r) {
2950 if (item[1] > e->items)
2952 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
2953 mask |= e->mask << e->shift_r;
2956 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2958 if (e->reg != SND_SOC_NOPM)
2959 change = snd_soc_test_bits(codec, e->reg, mask, val);
2961 change = dapm_kcontrol_set_value(kcontrol, val);
2964 if (e->reg != SND_SOC_NOPM) {
2965 update.kcontrol = kcontrol;
2966 update.reg = e->reg;
2969 card->update = &update;
2972 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
2974 card->update = NULL;
2977 mutex_unlock(&card->dapm_mutex);
2980 soc_dpcm_runtime_update(card);
2984 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2987 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2989 * @kcontrol: mixer control
2990 * @uinfo: control element information
2992 * Callback to provide information about a pin switch control.
2994 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2995 struct snd_ctl_elem_info *uinfo)
2997 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
2999 uinfo->value.integer.min = 0;
3000 uinfo->value.integer.max = 1;
3004 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3007 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3009 * @kcontrol: mixer control
3012 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3013 struct snd_ctl_elem_value *ucontrol)
3015 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3016 const char *pin = (const char *)kcontrol->private_value;
3018 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3020 ucontrol->value.integer.value[0] =
3021 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3023 mutex_unlock(&card->dapm_mutex);
3027 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3030 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3032 * @kcontrol: mixer control
3035 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3036 struct snd_ctl_elem_value *ucontrol)
3038 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3039 const char *pin = (const char *)kcontrol->private_value;
3041 if (ucontrol->value.integer.value[0])
3042 snd_soc_dapm_enable_pin(&card->dapm, pin);
3044 snd_soc_dapm_disable_pin(&card->dapm, pin);
3046 snd_soc_dapm_sync(&card->dapm);
3049 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3051 static struct snd_soc_dapm_widget *
3052 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3053 const struct snd_soc_dapm_widget *widget)
3055 struct snd_soc_dapm_widget *w;
3058 if ((w = dapm_cnew_widget(widget)) == NULL)
3062 case snd_soc_dapm_regulator_supply:
3063 w->regulator = devm_regulator_get(dapm->dev, w->name);
3064 if (IS_ERR(w->regulator)) {
3065 ret = PTR_ERR(w->regulator);
3066 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3071 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3072 ret = regulator_allow_bypass(w->regulator, true);
3074 dev_warn(w->dapm->dev,
3075 "ASoC: Failed to bypass %s: %d\n",
3079 case snd_soc_dapm_clock_supply:
3080 #ifdef CONFIG_CLKDEV_LOOKUP
3081 w->clk = devm_clk_get(dapm->dev, w->name);
3082 if (IS_ERR(w->clk)) {
3083 ret = PTR_ERR(w->clk);
3084 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3096 if (dapm->codec && dapm->codec->name_prefix)
3097 w->name = kasprintf(GFP_KERNEL, "%s %s",
3098 dapm->codec->name_prefix, widget->name);
3100 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3102 if (w->name == NULL) {
3108 case snd_soc_dapm_switch:
3109 case snd_soc_dapm_mixer:
3110 case snd_soc_dapm_mixer_named_ctl:
3111 w->power_check = dapm_generic_check_power;
3113 case snd_soc_dapm_mux:
3114 w->power_check = dapm_generic_check_power;
3116 case snd_soc_dapm_dai_out:
3117 w->power_check = dapm_adc_check_power;
3119 case snd_soc_dapm_dai_in:
3120 w->power_check = dapm_dac_check_power;
3122 case snd_soc_dapm_adc:
3123 case snd_soc_dapm_aif_out:
3124 case snd_soc_dapm_dac:
3125 case snd_soc_dapm_aif_in:
3126 case snd_soc_dapm_pga:
3127 case snd_soc_dapm_out_drv:
3128 case snd_soc_dapm_input:
3129 case snd_soc_dapm_output:
3130 case snd_soc_dapm_micbias:
3131 case snd_soc_dapm_spk:
3132 case snd_soc_dapm_hp:
3133 case snd_soc_dapm_mic:
3134 case snd_soc_dapm_line:
3135 case snd_soc_dapm_dai_link:
3136 w->power_check = dapm_generic_check_power;
3138 case snd_soc_dapm_supply:
3139 case snd_soc_dapm_regulator_supply:
3140 case snd_soc_dapm_clock_supply:
3141 case snd_soc_dapm_kcontrol:
3142 w->power_check = dapm_supply_check_power;
3145 w->power_check = dapm_always_on_check_power;
3150 w->codec = dapm->codec;
3151 w->platform = dapm->platform;
3152 INIT_LIST_HEAD(&w->sources);
3153 INIT_LIST_HEAD(&w->sinks);
3154 INIT_LIST_HEAD(&w->list);
3155 INIT_LIST_HEAD(&w->dirty);
3156 list_add(&w->list, &dapm->card->widgets);
3158 /* machine layer set ups unconnected pins and insertions */
3164 * snd_soc_dapm_new_controls - create new dapm controls
3165 * @dapm: DAPM context
3166 * @widget: widget array
3167 * @num: number of widgets
3169 * Creates new DAPM controls based upon the templates.
3171 * Returns 0 for success else error.
3173 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3174 const struct snd_soc_dapm_widget *widget,
3177 struct snd_soc_dapm_widget *w;
3181 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3182 for (i = 0; i < num; i++) {
3183 w = snd_soc_dapm_new_control(dapm, widget);
3186 "ASoC: Failed to create DAPM control %s\n",
3193 mutex_unlock(&dapm->card->dapm_mutex);
3196 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3198 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3199 struct snd_kcontrol *kcontrol, int event)
3201 struct snd_soc_dapm_path *source_p, *sink_p;
3202 struct snd_soc_dai *source, *sink;
3203 const struct snd_soc_pcm_stream *config = w->params;
3204 struct snd_pcm_substream substream;
3205 struct snd_pcm_hw_params *params = NULL;
3209 if (WARN_ON(!config) ||
3210 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3213 /* We only support a single source and sink, pick the first */
3214 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3216 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3219 if (WARN_ON(!source_p || !sink_p) ||
3220 WARN_ON(!sink_p->source || !source_p->sink) ||
3221 WARN_ON(!source_p->source || !sink_p->sink))
3224 source = source_p->source->priv;
3225 sink = sink_p->sink->priv;
3227 /* Be a little careful as we don't want to overflow the mask array */
3228 if (config->formats) {
3229 fmt = ffs(config->formats) - 1;
3231 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3236 /* Currently very limited parameter selection */
3237 params = kzalloc(sizeof(*params), GFP_KERNEL);
3242 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3244 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3246 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3249 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3250 = config->channels_min;
3251 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3252 = config->channels_max;
3254 memset(&substream, 0, sizeof(substream));
3257 case SND_SOC_DAPM_PRE_PMU:
3258 if (source->driver->ops && source->driver->ops->hw_params) {
3259 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3260 ret = source->driver->ops->hw_params(&substream,
3263 dev_err(source->dev,
3264 "ASoC: hw_params() failed: %d\n", ret);
3269 if (sink->driver->ops && sink->driver->ops->hw_params) {
3270 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3271 ret = sink->driver->ops->hw_params(&substream, params,
3275 "ASoC: hw_params() failed: %d\n", ret);
3281 case SND_SOC_DAPM_POST_PMU:
3282 ret = snd_soc_dai_digital_mute(sink, 0,
3283 SNDRV_PCM_STREAM_PLAYBACK);
3284 if (ret != 0 && ret != -ENOTSUPP)
3285 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3289 case SND_SOC_DAPM_PRE_PMD:
3290 ret = snd_soc_dai_digital_mute(sink, 1,
3291 SNDRV_PCM_STREAM_PLAYBACK);
3292 if (ret != 0 && ret != -ENOTSUPP)
3293 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3298 WARN(1, "Unknown event %d\n", event);
3307 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3308 const struct snd_soc_pcm_stream *params,
3309 struct snd_soc_dapm_widget *source,
3310 struct snd_soc_dapm_widget *sink)
3312 struct snd_soc_dapm_route routes[2];
3313 struct snd_soc_dapm_widget template;
3314 struct snd_soc_dapm_widget *w;
3318 len = strlen(source->name) + strlen(sink->name) + 2;
3319 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3322 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3324 memset(&template, 0, sizeof(template));
3325 template.reg = SND_SOC_NOPM;
3326 template.id = snd_soc_dapm_dai_link;
3327 template.name = link_name;
3328 template.event = snd_soc_dai_link_event;
3329 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3330 SND_SOC_DAPM_PRE_PMD;
3332 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3334 w = snd_soc_dapm_new_control(&card->dapm, &template);
3336 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3343 memset(&routes, 0, sizeof(routes));
3345 routes[0].source = source->name;
3346 routes[0].sink = link_name;
3347 routes[1].source = link_name;
3348 routes[1].sink = sink->name;
3350 return snd_soc_dapm_add_routes(&card->dapm, routes,
3351 ARRAY_SIZE(routes));
3354 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3355 struct snd_soc_dai *dai)
3357 struct snd_soc_dapm_widget template;
3358 struct snd_soc_dapm_widget *w;
3360 WARN_ON(dapm->dev != dai->dev);
3362 memset(&template, 0, sizeof(template));
3363 template.reg = SND_SOC_NOPM;
3365 if (dai->driver->playback.stream_name) {
3366 template.id = snd_soc_dapm_dai_in;
3367 template.name = dai->driver->playback.stream_name;
3368 template.sname = dai->driver->playback.stream_name;
3370 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3373 w = snd_soc_dapm_new_control(dapm, &template);
3375 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3376 dai->driver->playback.stream_name);
3381 dai->playback_widget = w;
3384 if (dai->driver->capture.stream_name) {
3385 template.id = snd_soc_dapm_dai_out;
3386 template.name = dai->driver->capture.stream_name;
3387 template.sname = dai->driver->capture.stream_name;
3389 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3392 w = snd_soc_dapm_new_control(dapm, &template);
3394 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3395 dai->driver->capture.stream_name);
3400 dai->capture_widget = w;
3406 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3408 struct snd_soc_dapm_widget *dai_w, *w;
3409 struct snd_soc_dai *dai;
3411 /* For each DAI widget... */
3412 list_for_each_entry(dai_w, &card->widgets, list) {
3413 switch (dai_w->id) {
3414 case snd_soc_dapm_dai_in:
3415 case snd_soc_dapm_dai_out:
3423 /* ...find all widgets with the same stream and link them */
3424 list_for_each_entry(w, &card->widgets, list) {
3425 if (w->dapm != dai_w->dapm)
3429 case snd_soc_dapm_dai_in:
3430 case snd_soc_dapm_dai_out:
3436 if (!w->sname || !strstr(w->sname, dai_w->name))
3439 if (dai->driver->playback.stream_name &&
3441 dai->driver->playback.stream_name)) {
3442 dev_dbg(dai->dev, "%s -> %s\n",
3443 dai->playback_widget->name, w->name);
3445 snd_soc_dapm_add_path(w->dapm,
3446 dai->playback_widget, w, NULL, NULL);
3449 if (dai->driver->capture.stream_name &&
3451 dai->driver->capture.stream_name)) {
3452 dev_dbg(dai->dev, "%s -> %s\n",
3453 w->name, dai->capture_widget->name);
3455 snd_soc_dapm_add_path(w->dapm, w,
3456 dai->capture_widget, NULL, NULL);
3464 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3466 struct snd_soc_pcm_runtime *rtd = card->rtd;
3467 struct snd_soc_dai *cpu_dai, *codec_dai;
3468 struct snd_soc_dapm_route r;
3471 memset(&r, 0, sizeof(r));
3473 /* for each BE DAI link... */
3474 for (i = 0; i < card->num_rtd; i++) {
3475 rtd = &card->rtd[i];
3476 cpu_dai = rtd->cpu_dai;
3477 codec_dai = rtd->codec_dai;
3479 /* dynamic FE links have no fixed DAI mapping */
3480 if (rtd->dai_link->dynamic)
3483 /* there is no point in connecting BE DAI links with dummies */
3484 if (snd_soc_dai_is_dummy(codec_dai) ||
3485 snd_soc_dai_is_dummy(cpu_dai))
3488 /* connect BE DAI playback if widgets are valid */
3489 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3490 r.source = cpu_dai->playback_widget->name;
3491 r.sink = codec_dai->playback_widget->name;
3492 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3493 cpu_dai->codec->name, r.source,
3494 codec_dai->platform->name, r.sink);
3496 snd_soc_dapm_add_route(&card->dapm, &r, true);
3499 /* connect BE DAI capture if widgets are valid */
3500 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3501 r.source = codec_dai->capture_widget->name;
3502 r.sink = cpu_dai->capture_widget->name;
3503 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3504 codec_dai->codec->name, r.source,
3505 cpu_dai->platform->name, r.sink);
3507 snd_soc_dapm_add_route(&card->dapm, &r, true);
3513 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3517 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3518 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3519 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3521 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3522 w_cpu = cpu_dai->playback_widget;
3523 w_codec = codec_dai->playback_widget;
3525 w_cpu = cpu_dai->capture_widget;
3526 w_codec = codec_dai->capture_widget;
3531 dapm_mark_dirty(w_cpu, "stream event");
3534 case SND_SOC_DAPM_STREAM_START:
3537 case SND_SOC_DAPM_STREAM_STOP:
3540 case SND_SOC_DAPM_STREAM_SUSPEND:
3541 case SND_SOC_DAPM_STREAM_RESUME:
3542 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3543 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3550 dapm_mark_dirty(w_codec, "stream event");
3553 case SND_SOC_DAPM_STREAM_START:
3554 w_codec->active = 1;
3556 case SND_SOC_DAPM_STREAM_STOP:
3557 w_codec->active = 0;
3559 case SND_SOC_DAPM_STREAM_SUSPEND:
3560 case SND_SOC_DAPM_STREAM_RESUME:
3561 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3562 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3567 dapm_power_widgets(rtd->card, event);
3571 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3572 * @rtd: PCM runtime data
3573 * @stream: stream name
3574 * @event: stream event
3576 * Sends a stream event to the dapm core. The core then makes any
3577 * necessary widget power changes.
3579 * Returns 0 for success else error.
3581 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3584 struct snd_soc_card *card = rtd->card;
3586 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3587 soc_dapm_stream_event(rtd, stream, event);
3588 mutex_unlock(&card->dapm_mutex);
3592 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3593 * @dapm: DAPM context
3596 * Enables input/output pin and its parents or children widgets iff there is
3597 * a valid audio route and active audio stream.
3599 * Requires external locking.
3601 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3602 * do any widget power switching.
3604 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3607 return snd_soc_dapm_set_pin(dapm, pin, 1);
3609 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3612 * snd_soc_dapm_enable_pin - enable pin.
3613 * @dapm: DAPM context
3616 * Enables input/output pin and its parents or children widgets iff there is
3617 * a valid audio route and active audio stream.
3619 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3620 * do any widget power switching.
3622 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3626 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3628 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3630 mutex_unlock(&dapm->card->dapm_mutex);
3634 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3637 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3638 * @dapm: DAPM context
3641 * Enables input/output pin regardless of any other state. This is
3642 * intended for use with microphone bias supplies used in microphone
3645 * Requires external locking.
3647 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3648 * do any widget power switching.
3650 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3653 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3656 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3660 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3663 dapm_mark_dirty(w, "force enable");
3667 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3670 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3671 * @dapm: DAPM context
3674 * Enables input/output pin regardless of any other state. This is
3675 * intended for use with microphone bias supplies used in microphone
3678 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3679 * do any widget power switching.
3681 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3686 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3688 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
3690 mutex_unlock(&dapm->card->dapm_mutex);
3694 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3697 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3698 * @dapm: DAPM context
3701 * Disables input/output pin and its parents or children widgets.
3703 * Requires external locking.
3705 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3706 * do any widget power switching.
3708 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3711 return snd_soc_dapm_set_pin(dapm, pin, 0);
3713 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
3716 * snd_soc_dapm_disable_pin - disable pin.
3717 * @dapm: DAPM context
3720 * Disables input/output pin and its parents or children widgets.
3722 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3723 * do any widget power switching.
3725 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3730 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3732 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3734 mutex_unlock(&dapm->card->dapm_mutex);
3738 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3741 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3742 * @dapm: DAPM context
3745 * Marks the specified pin as being not connected, disabling it along
3746 * any parent or child widgets. At present this is identical to
3747 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3748 * additional things such as disabling controls which only affect
3749 * paths through the pin.
3751 * Requires external locking.
3753 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3754 * do any widget power switching.
3756 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
3759 return snd_soc_dapm_set_pin(dapm, pin, 0);
3761 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
3764 * snd_soc_dapm_nc_pin - permanently disable pin.
3765 * @dapm: DAPM context
3768 * Marks the specified pin as being not connected, disabling it along
3769 * any parent or child widgets. At present this is identical to
3770 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3771 * additional things such as disabling controls which only affect
3772 * paths through the pin.
3774 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3775 * do any widget power switching.
3777 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3781 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3783 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3785 mutex_unlock(&dapm->card->dapm_mutex);
3789 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3792 * snd_soc_dapm_get_pin_status - get audio pin status
3793 * @dapm: DAPM context
3794 * @pin: audio signal pin endpoint (or start point)
3796 * Get audio pin status - connected or disconnected.
3798 * Returns 1 for connected otherwise 0.
3800 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3803 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3806 return w->connected;
3810 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3813 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3814 * @dapm: DAPM context
3815 * @pin: audio signal pin endpoint (or start point)
3817 * Mark the given endpoint or pin as ignoring suspend. When the
3818 * system is disabled a path between two endpoints flagged as ignoring
3819 * suspend will not be disabled. The path must already be enabled via
3820 * normal means at suspend time, it will not be turned on if it was not
3823 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3826 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3829 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3833 w->ignore_suspend = 1;
3837 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3839 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3840 struct snd_soc_dapm_widget *w)
3842 struct snd_soc_dapm_path *p;
3844 list_for_each_entry(p, &card->paths, list) {
3845 if ((p->source == w) || (p->sink == w)) {
3847 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3848 p->source->name, p->source->id, p->source->dapm,
3849 p->sink->name, p->sink->id, p->sink->dapm);
3851 /* Connected to something other than the codec */
3852 if (p->source->dapm != p->sink->dapm)
3855 * Loopback connection from codec external pin to
3856 * codec external pin
3858 if (p->sink->id == snd_soc_dapm_input) {
3859 switch (p->source->id) {
3860 case snd_soc_dapm_output:
3861 case snd_soc_dapm_micbias:
3874 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3875 * @codec: The codec whose pins should be processed
3877 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3878 * which are unused. Pins are used if they are connected externally to the
3879 * codec, whether that be to some other device, or a loop-back connection to
3882 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3884 struct snd_soc_card *card = codec->card;
3885 struct snd_soc_dapm_context *dapm = &codec->dapm;
3886 struct snd_soc_dapm_widget *w;
3888 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3889 &card->dapm, &codec->dapm);
3891 list_for_each_entry(w, &card->widgets, list) {
3892 if (w->dapm != dapm)
3895 case snd_soc_dapm_input:
3896 case snd_soc_dapm_output:
3897 case snd_soc_dapm_micbias:
3898 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3900 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3902 "... Not in map; disabling\n");
3903 snd_soc_dapm_nc_pin(dapm, w->name);
3913 * snd_soc_dapm_free - free dapm resources
3914 * @dapm: DAPM context
3916 * Free all dapm widgets and resources.
3918 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3920 snd_soc_dapm_sys_remove(dapm->dev);
3921 dapm_debugfs_cleanup(dapm);
3922 dapm_free_widgets(dapm);
3923 list_del(&dapm->list);
3925 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3927 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
3929 struct snd_soc_card *card = dapm->card;
3930 struct snd_soc_dapm_widget *w;
3931 LIST_HEAD(down_list);
3934 mutex_lock(&card->dapm_mutex);
3936 list_for_each_entry(w, &dapm->card->widgets, list) {
3937 if (w->dapm != dapm)
3940 dapm_seq_insert(w, &down_list, false);
3946 /* If there were no widgets to power down we're already in
3950 if (dapm->bias_level == SND_SOC_BIAS_ON)
3951 snd_soc_dapm_set_bias_level(dapm,
3952 SND_SOC_BIAS_PREPARE);
3953 dapm_seq_run(card, &down_list, 0, false);
3954 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3955 snd_soc_dapm_set_bias_level(dapm,
3956 SND_SOC_BIAS_STANDBY);
3959 mutex_unlock(&card->dapm_mutex);
3963 * snd_soc_dapm_shutdown - callback for system shutdown
3965 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3967 struct snd_soc_dapm_context *dapm;
3969 list_for_each_entry(dapm, &card->dapm_list, list) {
3970 if (dapm != &card->dapm) {
3971 soc_dapm_shutdown_dapm(dapm);
3972 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
3973 snd_soc_dapm_set_bias_level(dapm,
3978 soc_dapm_shutdown_dapm(&card->dapm);
3979 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3980 snd_soc_dapm_set_bias_level(&card->dapm,
3984 /* Module information */
3985 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3986 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3987 MODULE_LICENSE("GPL");