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 transition to ON or away from ON */
1616 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1617 d->bias_level != SND_SOC_BIAS_ON) ||
1618 (d->target_bias_level != SND_SOC_BIAS_ON &&
1619 d->bias_level == SND_SOC_BIAS_ON)) {
1620 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1623 "ASoC: Failed to prepare bias: %d\n", ret);
1627 /* Async callback run prior to DAPM sequences - brings to their final
1630 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1632 struct snd_soc_dapm_context *d = data;
1635 /* If we just powered the last thing off drop to standby bias */
1636 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1637 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1638 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1639 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1641 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1645 /* If we're in standby and can support bias off then do that */
1646 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1647 d->target_bias_level == SND_SOC_BIAS_OFF) {
1648 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1650 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1654 pm_runtime_put(d->dev);
1657 /* If we just powered up then move to active bias */
1658 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1659 d->target_bias_level == SND_SOC_BIAS_ON) {
1660 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1662 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1667 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1668 bool power, bool connect)
1670 /* If a connection is being made or broken then that update
1671 * will have marked the peer dirty, otherwise the widgets are
1672 * not connected and this update has no impact. */
1676 /* If the peer is already in the state we're moving to then we
1677 * won't have an impact on it. */
1678 if (power != peer->power)
1679 dapm_mark_dirty(peer, "peer state change");
1682 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1683 struct list_head *up_list,
1684 struct list_head *down_list)
1686 struct snd_soc_dapm_path *path;
1688 if (w->power == power)
1691 trace_snd_soc_dapm_widget_power(w, power);
1693 /* If we changed our power state perhaps our neigbours changed
1696 list_for_each_entry(path, &w->sources, list_sink) {
1698 dapm_widget_set_peer_power(path->source, power,
1703 case snd_soc_dapm_supply:
1704 case snd_soc_dapm_regulator_supply:
1705 case snd_soc_dapm_clock_supply:
1706 case snd_soc_dapm_kcontrol:
1707 /* Supplies can't affect their outputs, only their inputs */
1710 list_for_each_entry(path, &w->sinks, list_source) {
1712 dapm_widget_set_peer_power(path->sink, power,
1720 dapm_seq_insert(w, up_list, true);
1722 dapm_seq_insert(w, down_list, false);
1725 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1726 struct list_head *up_list,
1727 struct list_head *down_list)
1732 case snd_soc_dapm_pre:
1733 dapm_seq_insert(w, down_list, false);
1735 case snd_soc_dapm_post:
1736 dapm_seq_insert(w, up_list, true);
1740 power = dapm_widget_power_check(w);
1742 dapm_widget_set_power(w, power, up_list, down_list);
1748 * Scan each dapm widget for complete audio path.
1749 * A complete path is a route that has valid endpoints i.e.:-
1751 * o DAC to output pin.
1752 * o Input Pin to ADC.
1753 * o Input pin to Output pin (bypass, sidetone)
1754 * o DAC to ADC (loopback).
1756 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1758 struct snd_soc_dapm_widget *w;
1759 struct snd_soc_dapm_context *d;
1761 LIST_HEAD(down_list);
1762 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1763 enum snd_soc_bias_level bias;
1765 lockdep_assert_held(&card->dapm_mutex);
1767 trace_snd_soc_dapm_start(card);
1769 list_for_each_entry(d, &card->dapm_list, list) {
1770 if (d->idle_bias_off)
1771 d->target_bias_level = SND_SOC_BIAS_OFF;
1773 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1778 /* Check which widgets we need to power and store them in
1779 * lists indicating if they should be powered up or down. We
1780 * only check widgets that have been flagged as dirty but note
1781 * that new widgets may be added to the dirty list while we
1784 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1785 dapm_power_one_widget(w, &up_list, &down_list);
1788 list_for_each_entry(w, &card->widgets, list) {
1790 case snd_soc_dapm_pre:
1791 case snd_soc_dapm_post:
1792 /* These widgets always need to be powered */
1795 list_del_init(&w->dirty);
1802 /* Supplies and micbiases only bring the
1803 * context up to STANDBY as unless something
1804 * else is active and passing audio they
1805 * generally don't require full power. Signal
1806 * generators are virtual pins and have no
1807 * power impact themselves.
1810 case snd_soc_dapm_siggen:
1811 case snd_soc_dapm_vmid:
1813 case snd_soc_dapm_supply:
1814 case snd_soc_dapm_regulator_supply:
1815 case snd_soc_dapm_clock_supply:
1816 case snd_soc_dapm_micbias:
1817 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1818 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1821 d->target_bias_level = SND_SOC_BIAS_ON;
1828 /* Force all contexts in the card to the same bias state if
1829 * they're not ground referenced.
1831 bias = SND_SOC_BIAS_OFF;
1832 list_for_each_entry(d, &card->dapm_list, list)
1833 if (d->target_bias_level > bias)
1834 bias = d->target_bias_level;
1835 list_for_each_entry(d, &card->dapm_list, list)
1836 if (!d->idle_bias_off)
1837 d->target_bias_level = bias;
1839 trace_snd_soc_dapm_walk_done(card);
1841 /* Run card bias changes at first */
1842 dapm_pre_sequence_async(&card->dapm, 0);
1843 /* Run other bias changes in parallel */
1844 list_for_each_entry(d, &card->dapm_list, list) {
1845 if (d != &card->dapm)
1846 async_schedule_domain(dapm_pre_sequence_async, d,
1849 async_synchronize_full_domain(&async_domain);
1851 list_for_each_entry(w, &down_list, power_list) {
1852 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1855 list_for_each_entry(w, &up_list, power_list) {
1856 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1859 /* Power down widgets first; try to avoid amplifying pops. */
1860 dapm_seq_run(card, &down_list, event, false);
1862 dapm_widget_update(card);
1865 dapm_seq_run(card, &up_list, event, true);
1867 /* Run all the bias changes in parallel */
1868 list_for_each_entry(d, &card->dapm_list, list) {
1869 if (d != &card->dapm)
1870 async_schedule_domain(dapm_post_sequence_async, d,
1873 async_synchronize_full_domain(&async_domain);
1874 /* Run card bias changes at last */
1875 dapm_post_sequence_async(&card->dapm, 0);
1877 /* do we need to notify any clients that DAPM event is complete */
1878 list_for_each_entry(d, &card->dapm_list, list) {
1879 if (d->stream_event)
1880 d->stream_event(d, event);
1883 pop_dbg(card->dev, card->pop_time,
1884 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1885 pop_wait(card->pop_time);
1887 trace_snd_soc_dapm_done(card);
1892 #ifdef CONFIG_DEBUG_FS
1893 static ssize_t dapm_widget_power_read_file(struct file *file,
1894 char __user *user_buf,
1895 size_t count, loff_t *ppos)
1897 struct snd_soc_dapm_widget *w = file->private_data;
1901 struct snd_soc_dapm_path *p = NULL;
1903 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1907 in = is_connected_input_ep(w, NULL);
1908 dapm_clear_walk_input(w->dapm, &w->sources);
1909 out = is_connected_output_ep(w, NULL);
1910 dapm_clear_walk_output(w->dapm, &w->sinks);
1912 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1913 w->name, w->power ? "On" : "Off",
1914 w->force ? " (forced)" : "", in, out);
1917 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1918 " - R%d(0x%x) mask 0x%x",
1919 w->reg, w->reg, w->mask << w->shift);
1921 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1924 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1926 w->active ? "active" : "inactive");
1928 list_for_each_entry(p, &w->sources, list_sink) {
1929 if (p->connected && !p->connected(w, p->source))
1933 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1934 " in \"%s\" \"%s\"\n",
1935 p->name ? p->name : "static",
1938 list_for_each_entry(p, &w->sinks, list_source) {
1939 if (p->connected && !p->connected(w, p->sink))
1943 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1944 " out \"%s\" \"%s\"\n",
1945 p->name ? p->name : "static",
1949 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1955 static const struct file_operations dapm_widget_power_fops = {
1956 .open = simple_open,
1957 .read = dapm_widget_power_read_file,
1958 .llseek = default_llseek,
1961 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1962 size_t count, loff_t *ppos)
1964 struct snd_soc_dapm_context *dapm = file->private_data;
1967 switch (dapm->bias_level) {
1968 case SND_SOC_BIAS_ON:
1971 case SND_SOC_BIAS_PREPARE:
1972 level = "Prepare\n";
1974 case SND_SOC_BIAS_STANDBY:
1975 level = "Standby\n";
1977 case SND_SOC_BIAS_OFF:
1981 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
1982 level = "Unknown\n";
1986 return simple_read_from_buffer(user_buf, count, ppos, level,
1990 static const struct file_operations dapm_bias_fops = {
1991 .open = simple_open,
1992 .read = dapm_bias_read_file,
1993 .llseek = default_llseek,
1996 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1997 struct dentry *parent)
2001 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2003 if (!dapm->debugfs_dapm) {
2005 "ASoC: Failed to create DAPM debugfs directory\n");
2009 d = debugfs_create_file("bias_level", 0444,
2010 dapm->debugfs_dapm, dapm,
2014 "ASoC: Failed to create bias level debugfs file\n");
2017 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2019 struct snd_soc_dapm_context *dapm = w->dapm;
2022 if (!dapm->debugfs_dapm || !w->name)
2025 d = debugfs_create_file(w->name, 0444,
2026 dapm->debugfs_dapm, w,
2027 &dapm_widget_power_fops);
2029 dev_warn(w->dapm->dev,
2030 "ASoC: Failed to create %s debugfs file\n",
2034 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2036 debugfs_remove_recursive(dapm->debugfs_dapm);
2040 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2041 struct dentry *parent)
2045 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2049 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2055 /* test and update the power status of a mux widget */
2056 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2057 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2059 struct snd_soc_dapm_path *path;
2062 lockdep_assert_held(&card->dapm_mutex);
2064 /* find dapm widget path assoc with kcontrol */
2065 dapm_kcontrol_for_each_path(path, kcontrol) {
2066 if (!path->name || !e->texts[mux])
2070 /* we now need to match the string in the enum to the path */
2071 if (!(strcmp(path->name, e->texts[mux]))) {
2072 path->connect = 1; /* new connection */
2073 dapm_mark_dirty(path->source, "mux connection");
2076 dapm_mark_dirty(path->source,
2077 "mux disconnection");
2078 path->connect = 0; /* old connection must be powered down */
2080 dapm_mark_dirty(path->sink, "mux change");
2084 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2089 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2090 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2091 struct snd_soc_dapm_update *update)
2093 struct snd_soc_card *card = dapm->card;
2096 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2097 card->update = update;
2098 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2099 card->update = NULL;
2100 mutex_unlock(&card->dapm_mutex);
2102 soc_dpcm_runtime_update(card);
2105 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2107 /* test and update the power status of a mixer or switch widget */
2108 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2109 struct snd_kcontrol *kcontrol, int connect)
2111 struct snd_soc_dapm_path *path;
2114 lockdep_assert_held(&card->dapm_mutex);
2116 /* find dapm widget path assoc with kcontrol */
2117 dapm_kcontrol_for_each_path(path, kcontrol) {
2119 path->connect = connect;
2120 dapm_mark_dirty(path->source, "mixer connection");
2121 dapm_mark_dirty(path->sink, "mixer update");
2125 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2130 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2131 struct snd_kcontrol *kcontrol, int connect,
2132 struct snd_soc_dapm_update *update)
2134 struct snd_soc_card *card = dapm->card;
2137 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2138 card->update = update;
2139 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2140 card->update = NULL;
2141 mutex_unlock(&card->dapm_mutex);
2143 soc_dpcm_runtime_update(card);
2146 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2148 /* show dapm widget status in sys fs */
2149 static ssize_t dapm_widget_show(struct device *dev,
2150 struct device_attribute *attr, char *buf)
2152 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2153 struct snd_soc_codec *codec =rtd->codec;
2154 struct snd_soc_dapm_widget *w;
2156 char *state = "not set";
2158 list_for_each_entry(w, &codec->card->widgets, list) {
2159 if (w->dapm != &codec->dapm)
2162 /* only display widgets that burnm power */
2164 case snd_soc_dapm_hp:
2165 case snd_soc_dapm_mic:
2166 case snd_soc_dapm_spk:
2167 case snd_soc_dapm_line:
2168 case snd_soc_dapm_micbias:
2169 case snd_soc_dapm_dac:
2170 case snd_soc_dapm_adc:
2171 case snd_soc_dapm_pga:
2172 case snd_soc_dapm_out_drv:
2173 case snd_soc_dapm_mixer:
2174 case snd_soc_dapm_mixer_named_ctl:
2175 case snd_soc_dapm_supply:
2176 case snd_soc_dapm_regulator_supply:
2177 case snd_soc_dapm_clock_supply:
2179 count += sprintf(buf + count, "%s: %s\n",
2180 w->name, w->power ? "On":"Off");
2187 switch (codec->dapm.bias_level) {
2188 case SND_SOC_BIAS_ON:
2191 case SND_SOC_BIAS_PREPARE:
2194 case SND_SOC_BIAS_STANDBY:
2197 case SND_SOC_BIAS_OFF:
2201 count += sprintf(buf + count, "PM State: %s\n", state);
2206 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2208 int snd_soc_dapm_sys_add(struct device *dev)
2210 return device_create_file(dev, &dev_attr_dapm_widget);
2213 static void snd_soc_dapm_sys_remove(struct device *dev)
2215 device_remove_file(dev, &dev_attr_dapm_widget);
2218 static void dapm_free_path(struct snd_soc_dapm_path *path)
2220 list_del(&path->list_sink);
2221 list_del(&path->list_source);
2222 list_del(&path->list_kcontrol);
2223 list_del(&path->list);
2227 /* free all dapm widgets and resources */
2228 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2230 struct snd_soc_dapm_widget *w, *next_w;
2231 struct snd_soc_dapm_path *p, *next_p;
2233 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2234 if (w->dapm != dapm)
2238 * remove source and sink paths associated to this widget.
2239 * While removing the path, remove reference to it from both
2240 * source and sink widgets so that path is removed only once.
2242 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2245 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2248 kfree(w->kcontrols);
2254 static struct snd_soc_dapm_widget *dapm_find_widget(
2255 struct snd_soc_dapm_context *dapm, const char *pin,
2256 bool search_other_contexts)
2258 struct snd_soc_dapm_widget *w;
2259 struct snd_soc_dapm_widget *fallback = NULL;
2261 list_for_each_entry(w, &dapm->card->widgets, list) {
2262 if (!strcmp(w->name, pin)) {
2263 if (w->dapm == dapm)
2270 if (search_other_contexts)
2276 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2277 const char *pin, int status)
2279 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2281 dapm_assert_locked(dapm);
2284 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2288 if (w->connected != status)
2289 dapm_mark_dirty(w, "pin configuration");
2291 w->connected = status;
2299 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2300 * @dapm: DAPM context
2302 * Walks all dapm audio paths and powers widgets according to their
2303 * stream or path usage.
2305 * Requires external locking.
2307 * Returns 0 for success.
2309 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2312 * Suppress early reports (eg, jacks syncing their state) to avoid
2313 * silly DAPM runs during card startup.
2315 if (!dapm->card || !dapm->card->instantiated)
2318 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2320 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2323 * snd_soc_dapm_sync - scan and power dapm paths
2324 * @dapm: DAPM context
2326 * Walks all dapm audio paths and powers widgets according to their
2327 * stream or path usage.
2329 * Returns 0 for success.
2331 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2335 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2336 ret = snd_soc_dapm_sync_unlocked(dapm);
2337 mutex_unlock(&dapm->card->dapm_mutex);
2340 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2342 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2343 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2344 const char *control,
2345 int (*connected)(struct snd_soc_dapm_widget *source,
2346 struct snd_soc_dapm_widget *sink))
2348 struct snd_soc_dapm_path *path;
2351 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2355 path->source = wsource;
2357 path->connected = connected;
2358 INIT_LIST_HEAD(&path->list);
2359 INIT_LIST_HEAD(&path->list_kcontrol);
2360 INIT_LIST_HEAD(&path->list_source);
2361 INIT_LIST_HEAD(&path->list_sink);
2363 /* check for external widgets */
2364 if (wsink->id == snd_soc_dapm_input) {
2365 if (wsource->id == snd_soc_dapm_micbias ||
2366 wsource->id == snd_soc_dapm_mic ||
2367 wsource->id == snd_soc_dapm_line ||
2368 wsource->id == snd_soc_dapm_output)
2371 if (wsource->id == snd_soc_dapm_output) {
2372 if (wsink->id == snd_soc_dapm_spk ||
2373 wsink->id == snd_soc_dapm_hp ||
2374 wsink->id == snd_soc_dapm_line ||
2375 wsink->id == snd_soc_dapm_input)
2379 dapm_mark_dirty(wsource, "Route added");
2380 dapm_mark_dirty(wsink, "Route added");
2382 /* connect static paths */
2383 if (control == NULL) {
2384 list_add(&path->list, &dapm->card->paths);
2385 list_add(&path->list_sink, &wsink->sources);
2386 list_add(&path->list_source, &wsource->sinks);
2391 /* connect dynamic paths */
2392 switch (wsink->id) {
2393 case snd_soc_dapm_adc:
2394 case snd_soc_dapm_dac:
2395 case snd_soc_dapm_pga:
2396 case snd_soc_dapm_out_drv:
2397 case snd_soc_dapm_input:
2398 case snd_soc_dapm_output:
2399 case snd_soc_dapm_siggen:
2400 case snd_soc_dapm_micbias:
2401 case snd_soc_dapm_vmid:
2402 case snd_soc_dapm_pre:
2403 case snd_soc_dapm_post:
2404 case snd_soc_dapm_supply:
2405 case snd_soc_dapm_regulator_supply:
2406 case snd_soc_dapm_clock_supply:
2407 case snd_soc_dapm_aif_in:
2408 case snd_soc_dapm_aif_out:
2409 case snd_soc_dapm_dai_in:
2410 case snd_soc_dapm_dai_out:
2411 case snd_soc_dapm_dai_link:
2412 case snd_soc_dapm_kcontrol:
2413 list_add(&path->list, &dapm->card->paths);
2414 list_add(&path->list_sink, &wsink->sources);
2415 list_add(&path->list_source, &wsource->sinks);
2418 case snd_soc_dapm_mux:
2419 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2420 &wsink->kcontrol_news[0]);
2424 case snd_soc_dapm_switch:
2425 case snd_soc_dapm_mixer:
2426 case snd_soc_dapm_mixer_named_ctl:
2427 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2431 case snd_soc_dapm_hp:
2432 case snd_soc_dapm_mic:
2433 case snd_soc_dapm_line:
2434 case snd_soc_dapm_spk:
2435 list_add(&path->list, &dapm->card->paths);
2436 list_add(&path->list_sink, &wsink->sources);
2437 list_add(&path->list_source, &wsource->sinks);
2448 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2449 const struct snd_soc_dapm_route *route,
2450 unsigned int is_prefixed)
2452 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2453 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2456 char prefixed_sink[80];
2457 char prefixed_source[80];
2460 if (dapm->codec && dapm->codec->name_prefix && !is_prefixed) {
2461 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2462 dapm->codec->name_prefix, route->sink);
2463 sink = prefixed_sink;
2464 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2465 dapm->codec->name_prefix, route->source);
2466 source = prefixed_source;
2469 source = route->source;
2473 * find src and dest widgets over all widgets but favor a widget from
2474 * current DAPM context
2476 list_for_each_entry(w, &dapm->card->widgets, list) {
2477 if (!wsink && !(strcmp(w->name, sink))) {
2479 if (w->dapm == dapm)
2483 if (!wsource && !(strcmp(w->name, source))) {
2485 if (w->dapm == dapm)
2489 /* use widget from another DAPM context if not found from this */
2495 if (wsource == NULL) {
2496 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2500 if (wsink == NULL) {
2501 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2506 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2513 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2514 source, route->control, sink);
2518 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2519 const struct snd_soc_dapm_route *route)
2521 struct snd_soc_dapm_path *path, *p;
2524 char prefixed_sink[80];
2525 char prefixed_source[80];
2527 if (route->control) {
2529 "ASoC: Removal of routes with controls not supported\n");
2533 if (dapm->codec && dapm->codec->name_prefix) {
2534 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2535 dapm->codec->name_prefix, route->sink);
2536 sink = prefixed_sink;
2537 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2538 dapm->codec->name_prefix, route->source);
2539 source = prefixed_source;
2542 source = route->source;
2546 list_for_each_entry(p, &dapm->card->paths, list) {
2547 if (strcmp(p->source->name, source) != 0)
2549 if (strcmp(p->sink->name, sink) != 0)
2556 dapm_mark_dirty(path->source, "Route removed");
2557 dapm_mark_dirty(path->sink, "Route removed");
2559 dapm_free_path(path);
2561 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2569 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2570 * @dapm: DAPM context
2571 * @route: audio routes
2572 * @num: number of routes
2574 * Connects 2 dapm widgets together via a named audio path. The sink is
2575 * the widget receiving the audio signal, whilst the source is the sender
2576 * of the audio signal.
2578 * Returns 0 for success else error. On error all resources can be freed
2579 * with a call to snd_soc_card_free().
2581 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2582 const struct snd_soc_dapm_route *route, int num)
2586 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2587 for (i = 0; i < num; i++) {
2588 r = snd_soc_dapm_add_route(dapm, route, false);
2590 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2592 route->control ? route->control : "direct",
2598 mutex_unlock(&dapm->card->dapm_mutex);
2602 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2605 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2606 * @dapm: DAPM context
2607 * @route: audio routes
2608 * @num: number of routes
2610 * Removes routes from the DAPM context.
2612 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2613 const struct snd_soc_dapm_route *route, int num)
2617 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2618 for (i = 0; i < num; i++) {
2619 snd_soc_dapm_del_route(dapm, route);
2622 mutex_unlock(&dapm->card->dapm_mutex);
2626 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2628 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2629 const struct snd_soc_dapm_route *route)
2631 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2634 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2637 struct snd_soc_dapm_path *path;
2641 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2647 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2652 if (route->control || route->connected)
2653 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2654 route->source, route->sink);
2656 list_for_each_entry(path, &source->sinks, list_source) {
2657 if (path->sink == sink) {
2664 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2665 route->source, route->sink);
2667 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2668 count, route->source, route->sink);
2674 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2675 * @dapm: DAPM context
2676 * @route: audio routes
2677 * @num: number of routes
2679 * Mark existing routes matching those specified in the passed array
2680 * as being weak, meaning that they are ignored for the purpose of
2681 * power decisions. The main intended use case is for sidetone paths
2682 * which couple audio between other independent paths if they are both
2683 * active in order to make the combination work better at the user
2684 * level but which aren't intended to be "used".
2686 * Note that CODEC drivers should not use this as sidetone type paths
2687 * can frequently also be used as bypass paths.
2689 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2690 const struct snd_soc_dapm_route *route, int num)
2695 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2696 for (i = 0; i < num; i++) {
2697 err = snd_soc_dapm_weak_route(dapm, route);
2702 mutex_unlock(&dapm->card->dapm_mutex);
2706 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2709 * snd_soc_dapm_new_widgets - add new dapm widgets
2710 * @dapm: DAPM context
2712 * Checks the codec for any new dapm widgets and creates them if found.
2714 * Returns 0 for success.
2716 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2718 struct snd_soc_dapm_widget *w;
2721 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2723 list_for_each_entry(w, &card->widgets, list)
2728 if (w->num_kcontrols) {
2729 w->kcontrols = kzalloc(w->num_kcontrols *
2730 sizeof(struct snd_kcontrol *),
2732 if (!w->kcontrols) {
2733 mutex_unlock(&card->dapm_mutex);
2739 case snd_soc_dapm_switch:
2740 case snd_soc_dapm_mixer:
2741 case snd_soc_dapm_mixer_named_ctl:
2744 case snd_soc_dapm_mux:
2747 case snd_soc_dapm_pga:
2748 case snd_soc_dapm_out_drv:
2755 /* Read the initial power state from the device */
2757 soc_widget_read(w, w->reg, &val);
2758 val = val >> w->shift;
2760 if (val == w->on_val)
2766 dapm_mark_dirty(w, "new widget");
2767 dapm_debugfs_add_widget(w);
2770 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2771 mutex_unlock(&card->dapm_mutex);
2774 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2777 * snd_soc_dapm_get_volsw - dapm mixer get callback
2778 * @kcontrol: mixer control
2779 * @ucontrol: control element information
2781 * Callback to get the value of a dapm mixer control.
2783 * Returns 0 for success.
2785 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2786 struct snd_ctl_elem_value *ucontrol)
2788 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2789 struct snd_soc_card *card = codec->card;
2790 struct soc_mixer_control *mc =
2791 (struct soc_mixer_control *)kcontrol->private_value;
2793 unsigned int shift = mc->shift;
2795 unsigned int mask = (1 << fls(max)) - 1;
2796 unsigned int invert = mc->invert;
2799 if (snd_soc_volsw_is_stereo(mc))
2800 dev_warn(codec->dapm.dev,
2801 "ASoC: Control '%s' is stereo, which is not supported\n",
2804 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2805 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM)
2806 val = (snd_soc_read(codec, reg) >> shift) & mask;
2808 val = dapm_kcontrol_get_value(kcontrol);
2809 mutex_unlock(&card->dapm_mutex);
2812 ucontrol->value.integer.value[0] = max - val;
2814 ucontrol->value.integer.value[0] = val;
2818 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2821 * snd_soc_dapm_put_volsw - dapm mixer set callback
2822 * @kcontrol: mixer control
2823 * @ucontrol: control element information
2825 * Callback to set the value of a dapm mixer control.
2827 * Returns 0 for success.
2829 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2830 struct snd_ctl_elem_value *ucontrol)
2832 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2833 struct snd_soc_card *card = codec->card;
2834 struct soc_mixer_control *mc =
2835 (struct soc_mixer_control *)kcontrol->private_value;
2837 unsigned int shift = mc->shift;
2839 unsigned int mask = (1 << fls(max)) - 1;
2840 unsigned int invert = mc->invert;
2842 int connect, change;
2843 struct snd_soc_dapm_update update;
2846 if (snd_soc_volsw_is_stereo(mc))
2847 dev_warn(codec->dapm.dev,
2848 "ASoC: Control '%s' is stereo, which is not supported\n",
2851 val = (ucontrol->value.integer.value[0] & mask);
2857 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2859 change = dapm_kcontrol_set_value(kcontrol, val);
2861 if (reg != SND_SOC_NOPM) {
2862 mask = mask << shift;
2865 change = snd_soc_test_bits(codec, reg, mask, val);
2869 if (reg != SND_SOC_NOPM) {
2870 update.kcontrol = kcontrol;
2875 card->update = &update;
2878 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2880 card->update = NULL;
2883 mutex_unlock(&card->dapm_mutex);
2886 soc_dpcm_runtime_update(card);
2890 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2893 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2894 * @kcontrol: mixer control
2895 * @ucontrol: control element information
2897 * Callback to get the value of a dapm enumerated double mixer control.
2899 * Returns 0 for success.
2901 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2902 struct snd_ctl_elem_value *ucontrol)
2904 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2905 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2906 unsigned int reg_val, val;
2908 if (e->reg != SND_SOC_NOPM)
2909 reg_val = snd_soc_read(codec, e->reg);
2911 reg_val = dapm_kcontrol_get_value(kcontrol);
2913 val = (reg_val >> e->shift_l) & e->mask;
2914 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
2915 if (e->shift_l != e->shift_r) {
2916 val = (reg_val >> e->shift_r) & e->mask;
2917 val = snd_soc_enum_val_to_item(e, val);
2918 ucontrol->value.enumerated.item[1] = val;
2923 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2926 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2927 * @kcontrol: mixer control
2928 * @ucontrol: control element information
2930 * Callback to set the value of a dapm enumerated double mixer control.
2932 * Returns 0 for success.
2934 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2935 struct snd_ctl_elem_value *ucontrol)
2937 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2938 struct snd_soc_card *card = codec->card;
2939 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2940 unsigned int *item = ucontrol->value.enumerated.item;
2941 unsigned int val, change;
2943 struct snd_soc_dapm_update update;
2946 if (item[0] >= e->items)
2949 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
2950 mask = e->mask << e->shift_l;
2951 if (e->shift_l != e->shift_r) {
2952 if (item[1] > e->items)
2954 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
2955 mask |= e->mask << e->shift_r;
2958 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2960 if (e->reg != SND_SOC_NOPM)
2961 change = snd_soc_test_bits(codec, e->reg, mask, val);
2963 change = dapm_kcontrol_set_value(kcontrol, val);
2966 if (e->reg != SND_SOC_NOPM) {
2967 update.kcontrol = kcontrol;
2968 update.reg = e->reg;
2971 card->update = &update;
2974 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
2976 card->update = NULL;
2979 mutex_unlock(&card->dapm_mutex);
2982 soc_dpcm_runtime_update(card);
2986 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2989 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2991 * @kcontrol: mixer control
2992 * @uinfo: control element information
2994 * Callback to provide information about a pin switch control.
2996 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
2997 struct snd_ctl_elem_info *uinfo)
2999 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3001 uinfo->value.integer.min = 0;
3002 uinfo->value.integer.max = 1;
3006 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3009 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3011 * @kcontrol: mixer control
3014 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3015 struct snd_ctl_elem_value *ucontrol)
3017 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3018 const char *pin = (const char *)kcontrol->private_value;
3020 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3022 ucontrol->value.integer.value[0] =
3023 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3025 mutex_unlock(&card->dapm_mutex);
3029 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3032 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3034 * @kcontrol: mixer control
3037 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3038 struct snd_ctl_elem_value *ucontrol)
3040 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3041 const char *pin = (const char *)kcontrol->private_value;
3043 if (ucontrol->value.integer.value[0])
3044 snd_soc_dapm_enable_pin(&card->dapm, pin);
3046 snd_soc_dapm_disable_pin(&card->dapm, pin);
3048 snd_soc_dapm_sync(&card->dapm);
3051 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3053 static struct snd_soc_dapm_widget *
3054 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3055 const struct snd_soc_dapm_widget *widget)
3057 struct snd_soc_dapm_widget *w;
3060 if ((w = dapm_cnew_widget(widget)) == NULL)
3064 case snd_soc_dapm_regulator_supply:
3065 w->regulator = devm_regulator_get(dapm->dev, w->name);
3066 if (IS_ERR(w->regulator)) {
3067 ret = PTR_ERR(w->regulator);
3068 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3073 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3074 ret = regulator_allow_bypass(w->regulator, true);
3076 dev_warn(w->dapm->dev,
3077 "ASoC: Failed to bypass %s: %d\n",
3081 case snd_soc_dapm_clock_supply:
3082 #ifdef CONFIG_CLKDEV_LOOKUP
3083 w->clk = devm_clk_get(dapm->dev, w->name);
3084 if (IS_ERR(w->clk)) {
3085 ret = PTR_ERR(w->clk);
3086 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3098 if (dapm->codec && dapm->codec->name_prefix)
3099 w->name = kasprintf(GFP_KERNEL, "%s %s",
3100 dapm->codec->name_prefix, widget->name);
3102 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3104 if (w->name == NULL) {
3110 case snd_soc_dapm_switch:
3111 case snd_soc_dapm_mixer:
3112 case snd_soc_dapm_mixer_named_ctl:
3113 w->power_check = dapm_generic_check_power;
3115 case snd_soc_dapm_mux:
3116 w->power_check = dapm_generic_check_power;
3118 case snd_soc_dapm_dai_out:
3119 w->power_check = dapm_adc_check_power;
3121 case snd_soc_dapm_dai_in:
3122 w->power_check = dapm_dac_check_power;
3124 case snd_soc_dapm_adc:
3125 case snd_soc_dapm_aif_out:
3126 case snd_soc_dapm_dac:
3127 case snd_soc_dapm_aif_in:
3128 case snd_soc_dapm_pga:
3129 case snd_soc_dapm_out_drv:
3130 case snd_soc_dapm_input:
3131 case snd_soc_dapm_output:
3132 case snd_soc_dapm_micbias:
3133 case snd_soc_dapm_spk:
3134 case snd_soc_dapm_hp:
3135 case snd_soc_dapm_mic:
3136 case snd_soc_dapm_line:
3137 case snd_soc_dapm_dai_link:
3138 w->power_check = dapm_generic_check_power;
3140 case snd_soc_dapm_supply:
3141 case snd_soc_dapm_regulator_supply:
3142 case snd_soc_dapm_clock_supply:
3143 case snd_soc_dapm_kcontrol:
3144 w->power_check = dapm_supply_check_power;
3147 w->power_check = dapm_always_on_check_power;
3152 w->codec = dapm->codec;
3153 w->platform = dapm->platform;
3154 INIT_LIST_HEAD(&w->sources);
3155 INIT_LIST_HEAD(&w->sinks);
3156 INIT_LIST_HEAD(&w->list);
3157 INIT_LIST_HEAD(&w->dirty);
3158 list_add(&w->list, &dapm->card->widgets);
3160 /* machine layer set ups unconnected pins and insertions */
3166 * snd_soc_dapm_new_controls - create new dapm controls
3167 * @dapm: DAPM context
3168 * @widget: widget array
3169 * @num: number of widgets
3171 * Creates new DAPM controls based upon the templates.
3173 * Returns 0 for success else error.
3175 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3176 const struct snd_soc_dapm_widget *widget,
3179 struct snd_soc_dapm_widget *w;
3183 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3184 for (i = 0; i < num; i++) {
3185 w = snd_soc_dapm_new_control(dapm, widget);
3188 "ASoC: Failed to create DAPM control %s\n",
3195 mutex_unlock(&dapm->card->dapm_mutex);
3198 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3200 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3201 struct snd_kcontrol *kcontrol, int event)
3203 struct snd_soc_dapm_path *source_p, *sink_p;
3204 struct snd_soc_dai *source, *sink;
3205 const struct snd_soc_pcm_stream *config = w->params;
3206 struct snd_pcm_substream substream;
3207 struct snd_pcm_hw_params *params = NULL;
3211 if (WARN_ON(!config) ||
3212 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3215 /* We only support a single source and sink, pick the first */
3216 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3218 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3221 if (WARN_ON(!source_p || !sink_p) ||
3222 WARN_ON(!sink_p->source || !source_p->sink) ||
3223 WARN_ON(!source_p->source || !sink_p->sink))
3226 source = source_p->source->priv;
3227 sink = sink_p->sink->priv;
3229 /* Be a little careful as we don't want to overflow the mask array */
3230 if (config->formats) {
3231 fmt = ffs(config->formats) - 1;
3233 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3238 /* Currently very limited parameter selection */
3239 params = kzalloc(sizeof(*params), GFP_KERNEL);
3244 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3246 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3248 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3251 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3252 = config->channels_min;
3253 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3254 = config->channels_max;
3256 memset(&substream, 0, sizeof(substream));
3259 case SND_SOC_DAPM_PRE_PMU:
3260 if (source->driver->ops && source->driver->ops->hw_params) {
3261 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3262 ret = source->driver->ops->hw_params(&substream,
3265 dev_err(source->dev,
3266 "ASoC: hw_params() failed: %d\n", ret);
3271 if (sink->driver->ops && sink->driver->ops->hw_params) {
3272 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3273 ret = sink->driver->ops->hw_params(&substream, params,
3277 "ASoC: hw_params() failed: %d\n", ret);
3283 case SND_SOC_DAPM_POST_PMU:
3284 ret = snd_soc_dai_digital_mute(sink, 0,
3285 SNDRV_PCM_STREAM_PLAYBACK);
3286 if (ret != 0 && ret != -ENOTSUPP)
3287 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3291 case SND_SOC_DAPM_PRE_PMD:
3292 ret = snd_soc_dai_digital_mute(sink, 1,
3293 SNDRV_PCM_STREAM_PLAYBACK);
3294 if (ret != 0 && ret != -ENOTSUPP)
3295 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3300 WARN(1, "Unknown event %d\n", event);
3309 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3310 const struct snd_soc_pcm_stream *params,
3311 struct snd_soc_dapm_widget *source,
3312 struct snd_soc_dapm_widget *sink)
3314 struct snd_soc_dapm_route routes[2];
3315 struct snd_soc_dapm_widget template;
3316 struct snd_soc_dapm_widget *w;
3320 len = strlen(source->name) + strlen(sink->name) + 2;
3321 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3324 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3326 memset(&template, 0, sizeof(template));
3327 template.reg = SND_SOC_NOPM;
3328 template.id = snd_soc_dapm_dai_link;
3329 template.name = link_name;
3330 template.event = snd_soc_dai_link_event;
3331 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3332 SND_SOC_DAPM_PRE_PMD;
3334 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3336 w = snd_soc_dapm_new_control(&card->dapm, &template);
3338 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3345 memset(&routes, 0, sizeof(routes));
3347 routes[0].source = source->name;
3348 routes[0].sink = link_name;
3349 routes[1].source = link_name;
3350 routes[1].sink = sink->name;
3352 return snd_soc_dapm_add_routes(&card->dapm, routes,
3353 ARRAY_SIZE(routes));
3356 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3357 struct snd_soc_dai *dai)
3359 struct snd_soc_dapm_widget template;
3360 struct snd_soc_dapm_widget *w;
3362 WARN_ON(dapm->dev != dai->dev);
3364 memset(&template, 0, sizeof(template));
3365 template.reg = SND_SOC_NOPM;
3367 if (dai->driver->playback.stream_name) {
3368 template.id = snd_soc_dapm_dai_in;
3369 template.name = dai->driver->playback.stream_name;
3370 template.sname = dai->driver->playback.stream_name;
3372 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3375 w = snd_soc_dapm_new_control(dapm, &template);
3377 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3378 dai->driver->playback.stream_name);
3383 dai->playback_widget = w;
3386 if (dai->driver->capture.stream_name) {
3387 template.id = snd_soc_dapm_dai_out;
3388 template.name = dai->driver->capture.stream_name;
3389 template.sname = dai->driver->capture.stream_name;
3391 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3394 w = snd_soc_dapm_new_control(dapm, &template);
3396 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3397 dai->driver->capture.stream_name);
3402 dai->capture_widget = w;
3408 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3410 struct snd_soc_dapm_widget *dai_w, *w;
3411 struct snd_soc_dai *dai;
3413 /* For each DAI widget... */
3414 list_for_each_entry(dai_w, &card->widgets, list) {
3415 switch (dai_w->id) {
3416 case snd_soc_dapm_dai_in:
3417 case snd_soc_dapm_dai_out:
3425 /* ...find all widgets with the same stream and link them */
3426 list_for_each_entry(w, &card->widgets, list) {
3427 if (w->dapm != dai_w->dapm)
3431 case snd_soc_dapm_dai_in:
3432 case snd_soc_dapm_dai_out:
3438 if (!w->sname || !strstr(w->sname, dai_w->name))
3441 if (dai->driver->playback.stream_name &&
3443 dai->driver->playback.stream_name)) {
3444 dev_dbg(dai->dev, "%s -> %s\n",
3445 dai->playback_widget->name, w->name);
3447 snd_soc_dapm_add_path(w->dapm,
3448 dai->playback_widget, w, NULL, NULL);
3451 if (dai->driver->capture.stream_name &&
3453 dai->driver->capture.stream_name)) {
3454 dev_dbg(dai->dev, "%s -> %s\n",
3455 w->name, dai->capture_widget->name);
3457 snd_soc_dapm_add_path(w->dapm, w,
3458 dai->capture_widget, NULL, NULL);
3466 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3468 struct snd_soc_pcm_runtime *rtd = card->rtd;
3469 struct snd_soc_dai *cpu_dai, *codec_dai;
3470 struct snd_soc_dapm_route r;
3473 memset(&r, 0, sizeof(r));
3475 /* for each BE DAI link... */
3476 for (i = 0; i < card->num_rtd; i++) {
3477 rtd = &card->rtd[i];
3478 cpu_dai = rtd->cpu_dai;
3479 codec_dai = rtd->codec_dai;
3482 * dynamic FE links have no fixed DAI mapping.
3483 * CODEC<->CODEC links have no direct connection.
3485 if (rtd->dai_link->dynamic || rtd->dai_link->params)
3488 /* there is no point in connecting BE DAI links with dummies */
3489 if (snd_soc_dai_is_dummy(codec_dai) ||
3490 snd_soc_dai_is_dummy(cpu_dai))
3493 /* connect BE DAI playback if widgets are valid */
3494 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3495 r.source = cpu_dai->playback_widget->name;
3496 r.sink = codec_dai->playback_widget->name;
3497 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3498 cpu_dai->codec->name, r.source,
3499 codec_dai->platform->name, r.sink);
3501 snd_soc_dapm_add_route(&card->dapm, &r, true);
3504 /* connect BE DAI capture if widgets are valid */
3505 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3506 r.source = codec_dai->capture_widget->name;
3507 r.sink = cpu_dai->capture_widget->name;
3508 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3509 codec_dai->codec->name, r.source,
3510 cpu_dai->platform->name, r.sink);
3512 snd_soc_dapm_add_route(&card->dapm, &r, true);
3518 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3522 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3523 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3524 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3526 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3527 w_cpu = cpu_dai->playback_widget;
3528 w_codec = codec_dai->playback_widget;
3530 w_cpu = cpu_dai->capture_widget;
3531 w_codec = codec_dai->capture_widget;
3536 dapm_mark_dirty(w_cpu, "stream event");
3539 case SND_SOC_DAPM_STREAM_START:
3542 case SND_SOC_DAPM_STREAM_STOP:
3545 case SND_SOC_DAPM_STREAM_SUSPEND:
3546 case SND_SOC_DAPM_STREAM_RESUME:
3547 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3548 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3555 dapm_mark_dirty(w_codec, "stream event");
3558 case SND_SOC_DAPM_STREAM_START:
3559 w_codec->active = 1;
3561 case SND_SOC_DAPM_STREAM_STOP:
3562 w_codec->active = 0;
3564 case SND_SOC_DAPM_STREAM_SUSPEND:
3565 case SND_SOC_DAPM_STREAM_RESUME:
3566 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3567 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3572 dapm_power_widgets(rtd->card, event);
3576 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3577 * @rtd: PCM runtime data
3578 * @stream: stream name
3579 * @event: stream event
3581 * Sends a stream event to the dapm core. The core then makes any
3582 * necessary widget power changes.
3584 * Returns 0 for success else error.
3586 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3589 struct snd_soc_card *card = rtd->card;
3591 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3592 soc_dapm_stream_event(rtd, stream, event);
3593 mutex_unlock(&card->dapm_mutex);
3597 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3598 * @dapm: DAPM context
3601 * Enables input/output pin and its parents or children widgets iff there is
3602 * a valid audio route and active audio stream.
3604 * Requires external locking.
3606 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3607 * do any widget power switching.
3609 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3612 return snd_soc_dapm_set_pin(dapm, pin, 1);
3614 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3617 * snd_soc_dapm_enable_pin - enable pin.
3618 * @dapm: DAPM context
3621 * Enables input/output pin and its parents or children widgets iff there is
3622 * a valid audio route and active audio stream.
3624 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3625 * do any widget power switching.
3627 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3631 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3633 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3635 mutex_unlock(&dapm->card->dapm_mutex);
3639 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3642 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3643 * @dapm: DAPM context
3646 * Enables input/output pin regardless of any other state. This is
3647 * intended for use with microphone bias supplies used in microphone
3650 * Requires external locking.
3652 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3653 * do any widget power switching.
3655 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3658 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3661 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3665 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3668 dapm_mark_dirty(w, "force enable");
3672 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3675 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3676 * @dapm: DAPM context
3679 * Enables input/output pin regardless of any other state. This is
3680 * intended for use with microphone bias supplies used in microphone
3683 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3684 * do any widget power switching.
3686 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3691 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3693 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
3695 mutex_unlock(&dapm->card->dapm_mutex);
3699 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3702 * snd_soc_dapm_disable_pin_unlocked - disable pin.
3703 * @dapm: DAPM context
3706 * Disables input/output pin and its parents or children widgets.
3708 * Requires external locking.
3710 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3711 * do any widget power switching.
3713 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3716 return snd_soc_dapm_set_pin(dapm, pin, 0);
3718 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
3721 * snd_soc_dapm_disable_pin - disable pin.
3722 * @dapm: DAPM context
3725 * Disables input/output pin and its parents or children widgets.
3727 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3728 * do any widget power switching.
3730 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3735 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3737 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3739 mutex_unlock(&dapm->card->dapm_mutex);
3743 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3746 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
3747 * @dapm: DAPM context
3750 * Marks the specified pin as being not connected, disabling it along
3751 * any parent or child widgets. At present this is identical to
3752 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3753 * additional things such as disabling controls which only affect
3754 * paths through the pin.
3756 * Requires external locking.
3758 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3759 * do any widget power switching.
3761 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
3764 return snd_soc_dapm_set_pin(dapm, pin, 0);
3766 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
3769 * snd_soc_dapm_nc_pin - permanently disable pin.
3770 * @dapm: DAPM context
3773 * Marks the specified pin as being not connected, disabling it along
3774 * any parent or child widgets. At present this is identical to
3775 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3776 * additional things such as disabling controls which only affect
3777 * paths through the pin.
3779 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3780 * do any widget power switching.
3782 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3786 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3788 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
3790 mutex_unlock(&dapm->card->dapm_mutex);
3794 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3797 * snd_soc_dapm_get_pin_status - get audio pin status
3798 * @dapm: DAPM context
3799 * @pin: audio signal pin endpoint (or start point)
3801 * Get audio pin status - connected or disconnected.
3803 * Returns 1 for connected otherwise 0.
3805 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3808 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3811 return w->connected;
3815 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3818 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3819 * @dapm: DAPM context
3820 * @pin: audio signal pin endpoint (or start point)
3822 * Mark the given endpoint or pin as ignoring suspend. When the
3823 * system is disabled a path between two endpoints flagged as ignoring
3824 * suspend will not be disabled. The path must already be enabled via
3825 * normal means at suspend time, it will not be turned on if it was not
3828 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3831 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3834 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3838 w->ignore_suspend = 1;
3842 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3844 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3845 struct snd_soc_dapm_widget *w)
3847 struct snd_soc_dapm_path *p;
3849 list_for_each_entry(p, &card->paths, list) {
3850 if ((p->source == w) || (p->sink == w)) {
3852 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3853 p->source->name, p->source->id, p->source->dapm,
3854 p->sink->name, p->sink->id, p->sink->dapm);
3856 /* Connected to something other than the codec */
3857 if (p->source->dapm != p->sink->dapm)
3860 * Loopback connection from codec external pin to
3861 * codec external pin
3863 if (p->sink->id == snd_soc_dapm_input) {
3864 switch (p->source->id) {
3865 case snd_soc_dapm_output:
3866 case snd_soc_dapm_micbias:
3879 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3880 * @codec: The codec whose pins should be processed
3882 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3883 * which are unused. Pins are used if they are connected externally to the
3884 * codec, whether that be to some other device, or a loop-back connection to
3887 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3889 struct snd_soc_card *card = codec->card;
3890 struct snd_soc_dapm_context *dapm = &codec->dapm;
3891 struct snd_soc_dapm_widget *w;
3893 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3894 &card->dapm, &codec->dapm);
3896 list_for_each_entry(w, &card->widgets, list) {
3897 if (w->dapm != dapm)
3900 case snd_soc_dapm_input:
3901 case snd_soc_dapm_output:
3902 case snd_soc_dapm_micbias:
3903 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3905 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3907 "... Not in map; disabling\n");
3908 snd_soc_dapm_nc_pin(dapm, w->name);
3918 * snd_soc_dapm_free - free dapm resources
3919 * @dapm: DAPM context
3921 * Free all dapm widgets and resources.
3923 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3925 snd_soc_dapm_sys_remove(dapm->dev);
3926 dapm_debugfs_cleanup(dapm);
3927 dapm_free_widgets(dapm);
3928 list_del(&dapm->list);
3930 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3932 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
3934 struct snd_soc_card *card = dapm->card;
3935 struct snd_soc_dapm_widget *w;
3936 LIST_HEAD(down_list);
3939 mutex_lock(&card->dapm_mutex);
3941 list_for_each_entry(w, &dapm->card->widgets, list) {
3942 if (w->dapm != dapm)
3945 dapm_seq_insert(w, &down_list, false);
3951 /* If there were no widgets to power down we're already in
3955 if (dapm->bias_level == SND_SOC_BIAS_ON)
3956 snd_soc_dapm_set_bias_level(dapm,
3957 SND_SOC_BIAS_PREPARE);
3958 dapm_seq_run(card, &down_list, 0, false);
3959 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3960 snd_soc_dapm_set_bias_level(dapm,
3961 SND_SOC_BIAS_STANDBY);
3964 mutex_unlock(&card->dapm_mutex);
3968 * snd_soc_dapm_shutdown - callback for system shutdown
3970 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3972 struct snd_soc_dapm_context *dapm;
3974 list_for_each_entry(dapm, &card->dapm_list, list) {
3975 if (dapm != &card->dapm) {
3976 soc_dapm_shutdown_dapm(dapm);
3977 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
3978 snd_soc_dapm_set_bias_level(dapm,
3983 soc_dapm_shutdown_dapm(&card->dapm);
3984 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3985 snd_soc_dapm_set_bias_level(&card->dapm,
3989 /* Module information */
3990 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3991 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3992 MODULE_LICENSE("GPL");