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_virt_mux] = 6,
74 [snd_soc_dapm_value_mux] = 6,
75 [snd_soc_dapm_dac] = 7,
76 [snd_soc_dapm_switch] = 8,
77 [snd_soc_dapm_mixer] = 8,
78 [snd_soc_dapm_mixer_named_ctl] = 8,
79 [snd_soc_dapm_pga] = 9,
80 [snd_soc_dapm_adc] = 10,
81 [snd_soc_dapm_out_drv] = 11,
82 [snd_soc_dapm_hp] = 11,
83 [snd_soc_dapm_spk] = 11,
84 [snd_soc_dapm_line] = 11,
85 [snd_soc_dapm_kcontrol] = 12,
86 [snd_soc_dapm_post] = 13,
89 static int dapm_down_seq[] = {
90 [snd_soc_dapm_pre] = 0,
91 [snd_soc_dapm_kcontrol] = 1,
92 [snd_soc_dapm_adc] = 2,
93 [snd_soc_dapm_hp] = 3,
94 [snd_soc_dapm_spk] = 3,
95 [snd_soc_dapm_line] = 3,
96 [snd_soc_dapm_out_drv] = 3,
97 [snd_soc_dapm_pga] = 4,
98 [snd_soc_dapm_switch] = 5,
99 [snd_soc_dapm_mixer_named_ctl] = 5,
100 [snd_soc_dapm_mixer] = 5,
101 [snd_soc_dapm_dac] = 6,
102 [snd_soc_dapm_mic] = 7,
103 [snd_soc_dapm_micbias] = 8,
104 [snd_soc_dapm_mux] = 9,
105 [snd_soc_dapm_virt_mux] = 9,
106 [snd_soc_dapm_value_mux] = 9,
107 [snd_soc_dapm_aif_in] = 10,
108 [snd_soc_dapm_aif_out] = 10,
109 [snd_soc_dapm_dai_in] = 10,
110 [snd_soc_dapm_dai_out] = 10,
111 [snd_soc_dapm_dai_link] = 11,
112 [snd_soc_dapm_supply] = 12,
113 [snd_soc_dapm_clock_supply] = 13,
114 [snd_soc_dapm_regulator_supply] = 13,
115 [snd_soc_dapm_post] = 14,
118 static void pop_wait(u32 pop_time)
121 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
124 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
132 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
137 vsnprintf(buf, PAGE_SIZE, fmt, args);
138 dev_info(dev, "%s", buf);
144 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
146 return !list_empty(&w->dirty);
149 void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
151 if (!dapm_dirty_widget(w)) {
152 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
154 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
157 EXPORT_SYMBOL_GPL(dapm_mark_dirty);
159 void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
161 struct snd_soc_card *card = dapm->card;
162 struct snd_soc_dapm_widget *w;
164 mutex_lock(&card->dapm_mutex);
166 list_for_each_entry(w, &card->widgets, list) {
168 case snd_soc_dapm_input:
169 case snd_soc_dapm_output:
170 dapm_mark_dirty(w, "Rechecking inputs and outputs");
177 mutex_unlock(&card->dapm_mutex);
179 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
181 /* create a new dapm widget */
182 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
183 const struct snd_soc_dapm_widget *_widget)
185 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
188 struct dapm_kcontrol_data {
190 struct snd_soc_dapm_widget *widget;
191 struct list_head paths;
192 struct snd_soc_dapm_widget_list *wlist;
195 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
196 struct snd_kcontrol *kcontrol)
198 struct dapm_kcontrol_data *data;
199 struct soc_mixer_control *mc;
201 data = kzalloc(sizeof(*data), GFP_KERNEL);
203 dev_err(widget->dapm->dev,
204 "ASoC: can't allocate kcontrol data for %s\n",
209 INIT_LIST_HEAD(&data->paths);
211 switch (widget->id) {
212 case snd_soc_dapm_switch:
213 case snd_soc_dapm_mixer:
214 case snd_soc_dapm_mixer_named_ctl:
215 mc = (struct soc_mixer_control *)kcontrol->private_value;
217 if (mc->autodisable) {
218 struct snd_soc_dapm_widget template;
220 memset(&template, 0, sizeof(template));
221 template.reg = mc->reg;
222 template.mask = (1 << fls(mc->max)) - 1;
223 template.shift = mc->shift;
225 template.off_val = mc->max;
227 template.off_val = 0;
228 template.on_val = template.off_val;
229 template.id = snd_soc_dapm_kcontrol;
230 template.name = kcontrol->id.name;
232 data->value = template.on_val;
234 data->widget = snd_soc_dapm_new_control(widget->dapm,
246 kcontrol->private_data = data;
251 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
253 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
259 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
260 const struct snd_kcontrol *kcontrol)
262 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
267 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
268 struct snd_soc_dapm_widget *widget)
270 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
271 struct snd_soc_dapm_widget_list *new_wlist;
275 n = data->wlist->num_widgets + 1;
279 new_wlist = krealloc(data->wlist,
280 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
284 new_wlist->widgets[n - 1] = widget;
285 new_wlist->num_widgets = n;
287 data->wlist = new_wlist;
292 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
293 struct snd_soc_dapm_path *path)
295 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
297 list_add_tail(&path->list_kcontrol, &data->paths);
300 snd_soc_dapm_add_path(data->widget->dapm, data->widget,
301 path->source, NULL, NULL);
305 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
307 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
312 return data->widget->power;
315 static struct list_head *dapm_kcontrol_get_path_list(
316 const struct snd_kcontrol *kcontrol)
318 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
323 #define dapm_kcontrol_for_each_path(path, kcontrol) \
324 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
327 static unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
329 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
334 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
337 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
339 if (data->value == value)
343 data->widget->on_val = value;
351 * snd_soc_dapm_kcontrol_codec() - Returns the codec associated to a kcontrol
352 * @kcontrol: The kcontrol
354 struct snd_soc_codec *snd_soc_dapm_kcontrol_codec(struct snd_kcontrol *kcontrol)
356 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->codec;
358 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_codec);
360 static void dapm_reset(struct snd_soc_card *card)
362 struct snd_soc_dapm_widget *w;
364 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
366 list_for_each_entry(w, &card->widgets, list) {
367 w->new_power = w->power;
368 w->power_checked = false;
374 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg,
378 *value = snd_soc_read(w->codec, reg);
380 } else if (w->platform) {
381 *value = snd_soc_platform_read(w->platform, reg);
385 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
389 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
392 return snd_soc_write(w->codec, reg, val);
393 else if (w->platform)
394 return snd_soc_platform_write(w->platform, reg, val);
396 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
400 static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
402 if (w->codec && !w->codec->using_regmap)
403 mutex_lock(&w->codec->mutex);
404 else if (w->platform)
405 mutex_lock(&w->platform->mutex);
408 static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
410 if (w->codec && !w->codec->using_regmap)
411 mutex_unlock(&w->codec->mutex);
412 else if (w->platform)
413 mutex_unlock(&w->platform->mutex);
416 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
418 if (dapm->codec && dapm->codec->using_regmap)
419 regmap_async_complete(dapm->codec->control_data);
422 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
423 unsigned short reg, unsigned int mask, unsigned int value)
426 unsigned int old, new;
429 if (w->codec && w->codec->using_regmap) {
430 ret = regmap_update_bits_check_async(w->codec->control_data,
437 ret = soc_widget_read(w, reg, &old);
439 soc_widget_unlock(w);
443 new = (old & ~mask) | (value & mask);
446 ret = soc_widget_write(w, reg, new);
448 soc_widget_unlock(w);
452 soc_widget_unlock(w);
459 * snd_soc_dapm_set_bias_level - set the bias level for the system
460 * @dapm: DAPM context
461 * @level: level to configure
463 * Configure the bias (power) levels for the SoC audio device.
465 * Returns 0 for success else error.
467 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
468 enum snd_soc_bias_level level)
470 struct snd_soc_card *card = dapm->card;
473 trace_snd_soc_bias_level_start(card, level);
475 if (card && card->set_bias_level)
476 ret = card->set_bias_level(card, dapm, level);
481 if (dapm->codec->driver->set_bias_level)
482 ret = dapm->codec->driver->set_bias_level(dapm->codec,
485 dapm->bias_level = level;
486 } else if (!card || dapm != &card->dapm) {
487 dapm->bias_level = level;
493 if (card && card->set_bias_level_post)
494 ret = card->set_bias_level_post(card, dapm, level);
496 trace_snd_soc_bias_level_done(card, level);
501 /* set up initial codec paths */
502 static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
503 struct snd_soc_dapm_path *p, int i)
506 case snd_soc_dapm_switch:
507 case snd_soc_dapm_mixer:
508 case snd_soc_dapm_mixer_named_ctl: {
510 struct soc_mixer_control *mc = (struct soc_mixer_control *)
511 w->kcontrol_news[i].private_value;
513 unsigned int shift = mc->shift;
515 unsigned int mask = (1 << fls(max)) - 1;
516 unsigned int invert = mc->invert;
518 if (reg != SND_SOC_NOPM) {
519 soc_widget_read(w, reg, &val);
520 val = (val >> shift) & mask;
530 case snd_soc_dapm_mux: {
531 struct soc_enum *e = (struct soc_enum *)
532 w->kcontrol_news[i].private_value;
535 soc_widget_read(w, e->reg, &val);
536 item = (val >> e->shift_l) & e->mask;
538 if (item < e->max && !strcmp(p->name, e->texts[item]))
544 case snd_soc_dapm_virt_mux: {
545 struct soc_enum *e = (struct soc_enum *)
546 w->kcontrol_news[i].private_value;
549 /* since a virtual mux has no backing registers to
550 * decide which path to connect, it will try to match
551 * with the first enumeration. This is to ensure
552 * that the default mux choice (the first) will be
553 * correctly powered up during initialization.
555 if (!strcmp(p->name, e->texts[0]))
559 case snd_soc_dapm_value_mux: {
560 struct soc_enum *e = (struct soc_enum *)
561 w->kcontrol_news[i].private_value;
564 soc_widget_read(w, e->reg, &val);
565 val = (val >> e->shift_l) & e->mask;
566 for (item = 0; item < e->max; item++) {
567 if (val == e->values[item])
571 if (item < e->max && !strcmp(p->name, e->texts[item]))
577 /* does not affect routing - always connected */
578 case snd_soc_dapm_pga:
579 case snd_soc_dapm_out_drv:
580 case snd_soc_dapm_output:
581 case snd_soc_dapm_adc:
582 case snd_soc_dapm_input:
583 case snd_soc_dapm_siggen:
584 case snd_soc_dapm_dac:
585 case snd_soc_dapm_micbias:
586 case snd_soc_dapm_vmid:
587 case snd_soc_dapm_supply:
588 case snd_soc_dapm_regulator_supply:
589 case snd_soc_dapm_clock_supply:
590 case snd_soc_dapm_aif_in:
591 case snd_soc_dapm_aif_out:
592 case snd_soc_dapm_dai_in:
593 case snd_soc_dapm_dai_out:
594 case snd_soc_dapm_hp:
595 case snd_soc_dapm_mic:
596 case snd_soc_dapm_spk:
597 case snd_soc_dapm_line:
598 case snd_soc_dapm_dai_link:
599 case snd_soc_dapm_kcontrol:
602 /* does affect routing - dynamically connected */
603 case snd_soc_dapm_pre:
604 case snd_soc_dapm_post:
610 /* connect mux widget to its interconnecting audio paths */
611 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
612 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
613 struct snd_soc_dapm_path *path, const char *control_name,
614 const struct snd_kcontrol_new *kcontrol)
616 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
619 for (i = 0; i < e->max; i++) {
620 if (!(strcmp(control_name, e->texts[i]))) {
621 list_add(&path->list, &dapm->card->paths);
622 list_add(&path->list_sink, &dest->sources);
623 list_add(&path->list_source, &src->sinks);
624 path->name = (char*)e->texts[i];
625 dapm_set_path_status(dest, path, 0);
633 /* connect mixer widget to its interconnecting audio paths */
634 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
635 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
636 struct snd_soc_dapm_path *path, const char *control_name)
640 /* search for mixer kcontrol */
641 for (i = 0; i < dest->num_kcontrols; i++) {
642 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
643 list_add(&path->list, &dapm->card->paths);
644 list_add(&path->list_sink, &dest->sources);
645 list_add(&path->list_source, &src->sinks);
646 path->name = dest->kcontrol_news[i].name;
647 dapm_set_path_status(dest, path, i);
654 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
655 struct snd_soc_dapm_widget *kcontrolw,
656 const struct snd_kcontrol_new *kcontrol_new,
657 struct snd_kcontrol **kcontrol)
659 struct snd_soc_dapm_widget *w;
664 list_for_each_entry(w, &dapm->card->widgets, list) {
665 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
667 for (i = 0; i < w->num_kcontrols; i++) {
668 if (&w->kcontrol_news[i] == kcontrol_new) {
670 *kcontrol = w->kcontrols[i];
680 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
681 * create it. Either way, add the widget into the control's widget list
683 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
686 struct snd_soc_dapm_context *dapm = w->dapm;
687 struct snd_card *card = dapm->card->snd_card;
691 struct snd_kcontrol *kcontrol;
692 bool wname_in_long_name, kcname_in_long_name;
698 prefix = dapm->codec->name_prefix;
703 prefix_len = strlen(prefix) + 1;
707 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
712 wname_in_long_name = false;
713 kcname_in_long_name = true;
716 case snd_soc_dapm_switch:
717 case snd_soc_dapm_mixer:
718 wname_in_long_name = true;
719 kcname_in_long_name = true;
721 case snd_soc_dapm_mixer_named_ctl:
722 wname_in_long_name = false;
723 kcname_in_long_name = true;
725 case snd_soc_dapm_mux:
726 case snd_soc_dapm_virt_mux:
727 case snd_soc_dapm_value_mux:
728 wname_in_long_name = true;
729 kcname_in_long_name = false;
736 if (wname_in_long_name && kcname_in_long_name) {
738 * The control will get a prefix from the control
739 * creation process but we're also using the same
740 * prefix for widgets so cut the prefix off the
741 * front of the widget name.
743 long_name = kasprintf(GFP_KERNEL, "%s %s",
744 w->name + prefix_len,
745 w->kcontrol_news[kci].name);
746 if (long_name == NULL)
750 } else if (wname_in_long_name) {
752 name = w->name + prefix_len;
755 name = w->kcontrol_news[kci].name;
758 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
763 kcontrol->private_free = dapm_kcontrol_free;
765 ret = dapm_kcontrol_data_alloc(w, kcontrol);
767 snd_ctl_free_one(kcontrol);
771 ret = snd_ctl_add(card, kcontrol);
774 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
780 ret = dapm_kcontrol_add_widget(kcontrol, w);
784 w->kcontrols[kci] = kcontrol;
789 /* create new dapm mixer control */
790 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
793 struct snd_soc_dapm_path *path;
796 for (i = 0; i < w->num_kcontrols; i++) {
798 list_for_each_entry(path, &w->sources, list_sink) {
799 /* mixer/mux paths name must match control name */
800 if (path->name != (char *)w->kcontrol_news[i].name)
803 if (w->kcontrols[i]) {
804 dapm_kcontrol_add_path(w->kcontrols[i], path);
808 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
812 dapm_kcontrol_add_path(w->kcontrols[i], path);
819 /* create new dapm mux control */
820 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
822 struct snd_soc_dapm_context *dapm = w->dapm;
823 struct snd_soc_dapm_path *path;
826 if (w->num_kcontrols != 1) {
828 "ASoC: mux %s has incorrect number of controls\n",
833 if (list_empty(&w->sources)) {
834 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
838 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
842 list_for_each_entry(path, &w->sources, list_sink)
843 dapm_kcontrol_add_path(w->kcontrols[0], path);
848 /* create new dapm volume control */
849 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
851 if (w->num_kcontrols)
852 dev_err(w->dapm->dev,
853 "ASoC: PGA controls not supported: '%s'\n", w->name);
858 /* reset 'walked' bit for each dapm path */
859 static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
860 struct list_head *sink)
862 struct snd_soc_dapm_path *p;
864 list_for_each_entry(p, sink, list_source) {
867 dapm_clear_walk_output(dapm, &p->sink->sinks);
872 static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
873 struct list_head *source)
875 struct snd_soc_dapm_path *p;
877 list_for_each_entry(p, source, list_sink) {
880 dapm_clear_walk_input(dapm, &p->source->sources);
886 /* We implement power down on suspend by checking the power state of
887 * the ALSA card - when we are suspending the ALSA state for the card
890 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
892 int level = snd_power_get_state(widget->dapm->card->snd_card);
895 case SNDRV_CTL_POWER_D3hot:
896 case SNDRV_CTL_POWER_D3cold:
897 if (widget->ignore_suspend)
898 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
900 return widget->ignore_suspend;
906 /* add widget to list if it's not already in the list */
907 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
908 struct snd_soc_dapm_widget *w)
910 struct snd_soc_dapm_widget_list *wlist;
911 int wlistsize, wlistentries, i;
918 /* is this widget already in the list */
919 for (i = 0; i < wlist->num_widgets; i++) {
920 if (wlist->widgets[i] == w)
924 /* allocate some new space */
925 wlistentries = wlist->num_widgets + 1;
926 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
927 wlistentries * sizeof(struct snd_soc_dapm_widget *);
928 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
930 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
936 /* insert the widget */
937 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
938 w->name, wlist->num_widgets);
940 wlist->widgets[wlist->num_widgets] = w;
941 wlist->num_widgets++;
946 * Recursively check for a completed path to an active or physically connected
947 * output widget. Returns number of complete paths.
949 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
950 struct snd_soc_dapm_widget_list **list)
952 struct snd_soc_dapm_path *path;
955 if (widget->outputs >= 0)
956 return widget->outputs;
958 DAPM_UPDATE_STAT(widget, path_checks);
960 switch (widget->id) {
961 case snd_soc_dapm_supply:
962 case snd_soc_dapm_regulator_supply:
963 case snd_soc_dapm_clock_supply:
964 case snd_soc_dapm_kcontrol:
970 switch (widget->id) {
971 case snd_soc_dapm_adc:
972 case snd_soc_dapm_aif_out:
973 case snd_soc_dapm_dai_out:
974 if (widget->active) {
975 widget->outputs = snd_soc_dapm_suspend_check(widget);
976 return widget->outputs;
982 if (widget->connected) {
983 /* connected pin ? */
984 if (widget->id == snd_soc_dapm_output && !widget->ext) {
985 widget->outputs = snd_soc_dapm_suspend_check(widget);
986 return widget->outputs;
989 /* connected jack or spk ? */
990 if (widget->id == snd_soc_dapm_hp ||
991 widget->id == snd_soc_dapm_spk ||
992 (widget->id == snd_soc_dapm_line &&
993 !list_empty(&widget->sources))) {
994 widget->outputs = snd_soc_dapm_suspend_check(widget);
995 return widget->outputs;
999 list_for_each_entry(path, &widget->sinks, list_source) {
1000 DAPM_UPDATE_STAT(widget, neighbour_checks);
1011 trace_snd_soc_dapm_output_path(widget, path);
1013 if (path->sink && path->connect) {
1017 /* do we need to add this widget to the list ? */
1020 err = dapm_list_add_widget(list, path->sink);
1022 dev_err(widget->dapm->dev,
1023 "ASoC: could not add widget %s\n",
1030 con += is_connected_output_ep(path->sink, list);
1036 widget->outputs = con;
1042 * Recursively check for a completed path to an active or physically connected
1043 * input widget. Returns number of complete paths.
1045 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1046 struct snd_soc_dapm_widget_list **list)
1048 struct snd_soc_dapm_path *path;
1051 if (widget->inputs >= 0)
1052 return widget->inputs;
1054 DAPM_UPDATE_STAT(widget, path_checks);
1056 switch (widget->id) {
1057 case snd_soc_dapm_supply:
1058 case snd_soc_dapm_regulator_supply:
1059 case snd_soc_dapm_clock_supply:
1060 case snd_soc_dapm_kcontrol:
1066 /* active stream ? */
1067 switch (widget->id) {
1068 case snd_soc_dapm_dac:
1069 case snd_soc_dapm_aif_in:
1070 case snd_soc_dapm_dai_in:
1071 if (widget->active) {
1072 widget->inputs = snd_soc_dapm_suspend_check(widget);
1073 return widget->inputs;
1079 if (widget->connected) {
1080 /* connected pin ? */
1081 if (widget->id == snd_soc_dapm_input && !widget->ext) {
1082 widget->inputs = snd_soc_dapm_suspend_check(widget);
1083 return widget->inputs;
1086 /* connected VMID/Bias for lower pops */
1087 if (widget->id == snd_soc_dapm_vmid) {
1088 widget->inputs = snd_soc_dapm_suspend_check(widget);
1089 return widget->inputs;
1092 /* connected jack ? */
1093 if (widget->id == snd_soc_dapm_mic ||
1094 (widget->id == snd_soc_dapm_line &&
1095 !list_empty(&widget->sinks))) {
1096 widget->inputs = snd_soc_dapm_suspend_check(widget);
1097 return widget->inputs;
1100 /* signal generator */
1101 if (widget->id == snd_soc_dapm_siggen) {
1102 widget->inputs = snd_soc_dapm_suspend_check(widget);
1103 return widget->inputs;
1107 list_for_each_entry(path, &widget->sources, list_sink) {
1108 DAPM_UPDATE_STAT(widget, neighbour_checks);
1119 trace_snd_soc_dapm_input_path(widget, path);
1121 if (path->source && path->connect) {
1125 /* do we need to add this widget to the list ? */
1128 err = dapm_list_add_widget(list, path->source);
1130 dev_err(widget->dapm->dev,
1131 "ASoC: could not add widget %s\n",
1138 con += is_connected_input_ep(path->source, list);
1144 widget->inputs = con;
1150 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1151 * @dai: the soc DAI.
1152 * @stream: stream direction.
1153 * @list: list of active widgets for this stream.
1155 * Queries DAPM graph as to whether an valid audio stream path exists for
1156 * the initial stream specified by name. This takes into account
1157 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1159 * Returns the number of valid paths or negative error.
1161 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1162 struct snd_soc_dapm_widget_list **list)
1164 struct snd_soc_card *card = dai->card;
1167 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1170 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1171 paths = is_connected_output_ep(dai->playback_widget, list);
1172 dapm_clear_walk_output(&card->dapm,
1173 &dai->playback_widget->sinks);
1175 paths = is_connected_input_ep(dai->capture_widget, list);
1176 dapm_clear_walk_input(&card->dapm,
1177 &dai->capture_widget->sources);
1180 trace_snd_soc_dapm_connected(paths, stream);
1181 mutex_unlock(&card->dapm_mutex);
1187 * Handler for generic register modifier widget.
1189 int dapm_reg_event(struct snd_soc_dapm_widget *w,
1190 struct snd_kcontrol *kcontrol, int event)
1194 if (SND_SOC_DAPM_EVENT_ON(event))
1199 soc_widget_update_bits_locked(w, -(w->reg + 1),
1200 w->mask << w->shift, val << w->shift);
1204 EXPORT_SYMBOL_GPL(dapm_reg_event);
1207 * Handler for regulator supply widget.
1209 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1210 struct snd_kcontrol *kcontrol, int event)
1214 soc_dapm_async_complete(w->dapm);
1216 if (SND_SOC_DAPM_EVENT_ON(event)) {
1217 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1218 ret = regulator_allow_bypass(w->regulator, false);
1220 dev_warn(w->dapm->dev,
1221 "ASoC: Failed to bypass %s: %d\n",
1225 return regulator_enable(w->regulator);
1227 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1228 ret = regulator_allow_bypass(w->regulator, true);
1230 dev_warn(w->dapm->dev,
1231 "ASoC: Failed to unbypass %s: %d\n",
1235 return regulator_disable_deferred(w->regulator, w->shift);
1238 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1241 * Handler for clock supply widget.
1243 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1244 struct snd_kcontrol *kcontrol, int event)
1249 soc_dapm_async_complete(w->dapm);
1251 #ifdef CONFIG_HAVE_CLK
1252 if (SND_SOC_DAPM_EVENT_ON(event)) {
1253 return clk_prepare_enable(w->clk);
1255 clk_disable_unprepare(w->clk);
1261 EXPORT_SYMBOL_GPL(dapm_clock_event);
1263 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1265 if (w->power_checked)
1266 return w->new_power;
1271 w->new_power = w->power_check(w);
1273 w->power_checked = true;
1275 return w->new_power;
1278 /* Generic check to see if a widget should be powered.
1280 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1284 DAPM_UPDATE_STAT(w, power_checks);
1286 in = is_connected_input_ep(w, NULL);
1287 dapm_clear_walk_input(w->dapm, &w->sources);
1288 out = is_connected_output_ep(w, NULL);
1289 dapm_clear_walk_output(w->dapm, &w->sinks);
1290 return out != 0 && in != 0;
1293 /* Check to see if an ADC has power */
1294 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1298 DAPM_UPDATE_STAT(w, power_checks);
1301 in = is_connected_input_ep(w, NULL);
1302 dapm_clear_walk_input(w->dapm, &w->sources);
1305 return dapm_generic_check_power(w);
1309 /* Check to see if a DAC has power */
1310 static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1314 DAPM_UPDATE_STAT(w, power_checks);
1317 out = is_connected_output_ep(w, NULL);
1318 dapm_clear_walk_output(w->dapm, &w->sinks);
1321 return dapm_generic_check_power(w);
1325 /* Check to see if a power supply is needed */
1326 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1328 struct snd_soc_dapm_path *path;
1330 DAPM_UPDATE_STAT(w, power_checks);
1332 /* Check if one of our outputs is connected */
1333 list_for_each_entry(path, &w->sinks, list_source) {
1334 DAPM_UPDATE_STAT(w, neighbour_checks);
1339 if (path->connected &&
1340 !path->connected(path->source, path->sink))
1346 if (dapm_widget_power_check(path->sink))
1353 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1358 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1359 struct snd_soc_dapm_widget *b,
1367 sort = dapm_down_seq;
1369 if (sort[a->id] != sort[b->id])
1370 return sort[a->id] - sort[b->id];
1371 if (a->subseq != b->subseq) {
1373 return a->subseq - b->subseq;
1375 return b->subseq - a->subseq;
1377 if (a->reg != b->reg)
1378 return a->reg - b->reg;
1379 if (a->dapm != b->dapm)
1380 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1385 /* Insert a widget in order into a DAPM power sequence. */
1386 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1387 struct list_head *list,
1390 struct snd_soc_dapm_widget *w;
1392 list_for_each_entry(w, list, power_list)
1393 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1394 list_add_tail(&new_widget->power_list, &w->power_list);
1398 list_add_tail(&new_widget->power_list, list);
1401 static void dapm_seq_check_event(struct snd_soc_card *card,
1402 struct snd_soc_dapm_widget *w, int event)
1404 const char *ev_name;
1408 case SND_SOC_DAPM_PRE_PMU:
1409 ev_name = "PRE_PMU";
1412 case SND_SOC_DAPM_POST_PMU:
1413 ev_name = "POST_PMU";
1416 case SND_SOC_DAPM_PRE_PMD:
1417 ev_name = "PRE_PMD";
1420 case SND_SOC_DAPM_POST_PMD:
1421 ev_name = "POST_PMD";
1424 case SND_SOC_DAPM_WILL_PMU:
1425 ev_name = "WILL_PMU";
1428 case SND_SOC_DAPM_WILL_PMD:
1429 ev_name = "WILL_PMD";
1433 WARN(1, "Unknown event %d\n", event);
1437 if (w->new_power != power)
1440 if (w->event && (w->event_flags & event)) {
1441 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1443 soc_dapm_async_complete(w->dapm);
1444 trace_snd_soc_dapm_widget_event_start(w, event);
1445 ret = w->event(w, NULL, event);
1446 trace_snd_soc_dapm_widget_event_done(w, event);
1448 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1449 ev_name, w->name, ret);
1453 /* Apply the coalesced changes from a DAPM sequence */
1454 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1455 struct list_head *pending)
1457 struct snd_soc_dapm_widget *w;
1459 unsigned int value = 0;
1460 unsigned int mask = 0;
1462 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1465 list_for_each_entry(w, pending, power_list) {
1466 WARN_ON(reg != w->reg);
1467 w->power = w->new_power;
1469 mask |= w->mask << w->shift;
1471 value |= w->on_val << w->shift;
1473 value |= w->off_val << w->shift;
1475 pop_dbg(w->dapm->dev, card->pop_time,
1476 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1477 w->name, reg, value, mask);
1479 /* Check for events */
1480 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1481 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1485 /* Any widget will do, they should all be updating the
1488 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1491 pop_dbg(w->dapm->dev, card->pop_time,
1492 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1493 value, mask, reg, card->pop_time);
1494 pop_wait(card->pop_time);
1495 soc_widget_update_bits_locked(w, reg, mask, value);
1498 list_for_each_entry(w, pending, power_list) {
1499 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1500 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1504 /* Apply a DAPM power sequence.
1506 * We walk over a pre-sorted list of widgets to apply power to. In
1507 * order to minimise the number of writes to the device required
1508 * multiple widgets will be updated in a single write where possible.
1509 * Currently anything that requires more than a single write is not
1512 static void dapm_seq_run(struct snd_soc_card *card,
1513 struct list_head *list, int event, bool power_up)
1515 struct snd_soc_dapm_widget *w, *n;
1516 struct snd_soc_dapm_context *d;
1519 int cur_subseq = -1;
1520 int cur_reg = SND_SOC_NOPM;
1521 struct snd_soc_dapm_context *cur_dapm = NULL;
1528 sort = dapm_down_seq;
1530 list_for_each_entry_safe(w, n, list, power_list) {
1533 /* Do we need to apply any queued changes? */
1534 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1535 w->dapm != cur_dapm || w->subseq != cur_subseq) {
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,
1547 if (cur_dapm && w->dapm != cur_dapm)
1548 soc_dapm_async_complete(cur_dapm);
1550 INIT_LIST_HEAD(&pending);
1552 cur_subseq = INT_MIN;
1553 cur_reg = SND_SOC_NOPM;
1558 case snd_soc_dapm_pre:
1560 list_for_each_entry_safe_continue(w, n, list,
1563 if (event == SND_SOC_DAPM_STREAM_START)
1565 NULL, SND_SOC_DAPM_PRE_PMU);
1566 else if (event == SND_SOC_DAPM_STREAM_STOP)
1568 NULL, SND_SOC_DAPM_PRE_PMD);
1571 case snd_soc_dapm_post:
1573 list_for_each_entry_safe_continue(w, n, list,
1576 if (event == SND_SOC_DAPM_STREAM_START)
1578 NULL, SND_SOC_DAPM_POST_PMU);
1579 else if (event == SND_SOC_DAPM_STREAM_STOP)
1581 NULL, SND_SOC_DAPM_POST_PMD);
1585 /* Queue it up for application */
1586 cur_sort = sort[w->id];
1587 cur_subseq = w->subseq;
1590 list_move(&w->power_list, &pending);
1595 dev_err(w->dapm->dev,
1596 "ASoC: Failed to apply widget power: %d\n", ret);
1599 if (!list_empty(&pending))
1600 dapm_seq_run_coalesced(card, &pending);
1602 if (cur_dapm && cur_dapm->seq_notifier) {
1603 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1604 if (sort[i] == cur_sort)
1605 cur_dapm->seq_notifier(cur_dapm,
1609 list_for_each_entry(d, &card->dapm_list, list) {
1610 soc_dapm_async_complete(d);
1614 static void dapm_widget_update(struct snd_soc_card *card)
1616 struct snd_soc_dapm_update *update = card->update;
1617 struct snd_soc_dapm_widget_list *wlist;
1618 struct snd_soc_dapm_widget *w = NULL;
1622 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1625 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1627 for (wi = 0; wi < wlist->num_widgets; wi++) {
1628 w = wlist->widgets[wi];
1630 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1631 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1633 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1641 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
1644 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1647 for (wi = 0; wi < wlist->num_widgets; wi++) {
1648 w = wlist->widgets[wi];
1650 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1651 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1653 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1659 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1660 * they're changing state.
1662 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1664 struct snd_soc_dapm_context *d = data;
1667 /* If we're off and we're not supposed to be go into STANDBY */
1668 if (d->bias_level == SND_SOC_BIAS_OFF &&
1669 d->target_bias_level != SND_SOC_BIAS_OFF) {
1671 pm_runtime_get_sync(d->dev);
1673 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1676 "ASoC: Failed to turn on bias: %d\n", ret);
1679 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1680 if (d->bias_level != d->target_bias_level) {
1681 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1684 "ASoC: Failed to prepare bias: %d\n", ret);
1688 /* Async callback run prior to DAPM sequences - brings to their final
1691 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1693 struct snd_soc_dapm_context *d = data;
1696 /* If we just powered the last thing off drop to standby bias */
1697 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1698 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1699 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1700 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1702 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1706 /* If we're in standby and can support bias off then do that */
1707 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1708 d->target_bias_level == SND_SOC_BIAS_OFF) {
1709 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1711 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1715 pm_runtime_put(d->dev);
1718 /* If we just powered up then move to active bias */
1719 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1720 d->target_bias_level == SND_SOC_BIAS_ON) {
1721 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1723 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1728 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1729 bool power, bool connect)
1731 /* If a connection is being made or broken then that update
1732 * will have marked the peer dirty, otherwise the widgets are
1733 * not connected and this update has no impact. */
1737 /* If the peer is already in the state we're moving to then we
1738 * won't have an impact on it. */
1739 if (power != peer->power)
1740 dapm_mark_dirty(peer, "peer state change");
1743 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1744 struct list_head *up_list,
1745 struct list_head *down_list)
1747 struct snd_soc_dapm_path *path;
1749 if (w->power == power)
1752 trace_snd_soc_dapm_widget_power(w, power);
1754 /* If we changed our power state perhaps our neigbours changed
1757 list_for_each_entry(path, &w->sources, list_sink) {
1759 dapm_widget_set_peer_power(path->source, power,
1764 case snd_soc_dapm_supply:
1765 case snd_soc_dapm_regulator_supply:
1766 case snd_soc_dapm_clock_supply:
1767 case snd_soc_dapm_kcontrol:
1768 /* Supplies can't affect their outputs, only their inputs */
1771 list_for_each_entry(path, &w->sinks, list_source) {
1773 dapm_widget_set_peer_power(path->sink, power,
1781 dapm_seq_insert(w, up_list, true);
1783 dapm_seq_insert(w, down_list, false);
1786 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1787 struct list_head *up_list,
1788 struct list_head *down_list)
1793 case snd_soc_dapm_pre:
1794 dapm_seq_insert(w, down_list, false);
1796 case snd_soc_dapm_post:
1797 dapm_seq_insert(w, up_list, true);
1801 power = dapm_widget_power_check(w);
1803 dapm_widget_set_power(w, power, up_list, down_list);
1809 * Scan each dapm widget for complete audio path.
1810 * A complete path is a route that has valid endpoints i.e.:-
1812 * o DAC to output pin.
1813 * o Input Pin to ADC.
1814 * o Input pin to Output pin (bypass, sidetone)
1815 * o DAC to ADC (loopback).
1817 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1819 struct snd_soc_dapm_widget *w;
1820 struct snd_soc_dapm_context *d;
1822 LIST_HEAD(down_list);
1823 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1824 enum snd_soc_bias_level bias;
1826 trace_snd_soc_dapm_start(card);
1828 list_for_each_entry(d, &card->dapm_list, list) {
1829 if (d->idle_bias_off)
1830 d->target_bias_level = SND_SOC_BIAS_OFF;
1832 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1837 /* Check which widgets we need to power and store them in
1838 * lists indicating if they should be powered up or down. We
1839 * only check widgets that have been flagged as dirty but note
1840 * that new widgets may be added to the dirty list while we
1843 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1844 dapm_power_one_widget(w, &up_list, &down_list);
1847 list_for_each_entry(w, &card->widgets, list) {
1849 case snd_soc_dapm_pre:
1850 case snd_soc_dapm_post:
1851 /* These widgets always need to be powered */
1854 list_del_init(&w->dirty);
1861 /* Supplies and micbiases only bring the
1862 * context up to STANDBY as unless something
1863 * else is active and passing audio they
1864 * generally don't require full power. Signal
1865 * generators are virtual pins and have no
1866 * power impact themselves.
1869 case snd_soc_dapm_siggen:
1870 case snd_soc_dapm_vmid:
1872 case snd_soc_dapm_supply:
1873 case snd_soc_dapm_regulator_supply:
1874 case snd_soc_dapm_clock_supply:
1875 case snd_soc_dapm_micbias:
1876 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1877 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1880 d->target_bias_level = SND_SOC_BIAS_ON;
1887 /* Force all contexts in the card to the same bias state if
1888 * they're not ground referenced.
1890 bias = SND_SOC_BIAS_OFF;
1891 list_for_each_entry(d, &card->dapm_list, list)
1892 if (d->target_bias_level > bias)
1893 bias = d->target_bias_level;
1894 list_for_each_entry(d, &card->dapm_list, list)
1895 if (!d->idle_bias_off)
1896 d->target_bias_level = bias;
1898 trace_snd_soc_dapm_walk_done(card);
1900 /* Run all the bias changes in parallel */
1901 list_for_each_entry(d, &card->dapm_list, list)
1902 async_schedule_domain(dapm_pre_sequence_async, d,
1904 async_synchronize_full_domain(&async_domain);
1906 list_for_each_entry(w, &down_list, power_list) {
1907 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1910 list_for_each_entry(w, &up_list, power_list) {
1911 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1914 /* Power down widgets first; try to avoid amplifying pops. */
1915 dapm_seq_run(card, &down_list, event, false);
1917 dapm_widget_update(card);
1920 dapm_seq_run(card, &up_list, event, true);
1922 /* Run all the bias changes in parallel */
1923 list_for_each_entry(d, &card->dapm_list, list)
1924 async_schedule_domain(dapm_post_sequence_async, d,
1926 async_synchronize_full_domain(&async_domain);
1928 /* do we need to notify any clients that DAPM event is complete */
1929 list_for_each_entry(d, &card->dapm_list, list) {
1930 if (d->stream_event)
1931 d->stream_event(d, event);
1934 pop_dbg(card->dev, card->pop_time,
1935 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1936 pop_wait(card->pop_time);
1938 trace_snd_soc_dapm_done(card);
1943 #ifdef CONFIG_DEBUG_FS
1944 static ssize_t dapm_widget_power_read_file(struct file *file,
1945 char __user *user_buf,
1946 size_t count, loff_t *ppos)
1948 struct snd_soc_dapm_widget *w = file->private_data;
1952 struct snd_soc_dapm_path *p = NULL;
1954 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1958 in = is_connected_input_ep(w, NULL);
1959 dapm_clear_walk_input(w->dapm, &w->sources);
1960 out = is_connected_output_ep(w, NULL);
1961 dapm_clear_walk_output(w->dapm, &w->sinks);
1963 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1964 w->name, w->power ? "On" : "Off",
1965 w->force ? " (forced)" : "", in, out);
1968 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1969 " - R%d(0x%x) mask 0x%x",
1970 w->reg, w->reg, w->mask << w->shift);
1972 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1975 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1977 w->active ? "active" : "inactive");
1979 list_for_each_entry(p, &w->sources, list_sink) {
1980 if (p->connected && !p->connected(w, p->source))
1984 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1985 " in \"%s\" \"%s\"\n",
1986 p->name ? p->name : "static",
1989 list_for_each_entry(p, &w->sinks, list_source) {
1990 if (p->connected && !p->connected(w, p->sink))
1994 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1995 " out \"%s\" \"%s\"\n",
1996 p->name ? p->name : "static",
2000 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2006 static const struct file_operations dapm_widget_power_fops = {
2007 .open = simple_open,
2008 .read = dapm_widget_power_read_file,
2009 .llseek = default_llseek,
2012 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2013 size_t count, loff_t *ppos)
2015 struct snd_soc_dapm_context *dapm = file->private_data;
2018 switch (dapm->bias_level) {
2019 case SND_SOC_BIAS_ON:
2022 case SND_SOC_BIAS_PREPARE:
2023 level = "Prepare\n";
2025 case SND_SOC_BIAS_STANDBY:
2026 level = "Standby\n";
2028 case SND_SOC_BIAS_OFF:
2032 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2033 level = "Unknown\n";
2037 return simple_read_from_buffer(user_buf, count, ppos, level,
2041 static const struct file_operations dapm_bias_fops = {
2042 .open = simple_open,
2043 .read = dapm_bias_read_file,
2044 .llseek = default_llseek,
2047 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2048 struct dentry *parent)
2052 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2054 if (!dapm->debugfs_dapm) {
2056 "ASoC: Failed to create DAPM debugfs directory\n");
2060 d = debugfs_create_file("bias_level", 0444,
2061 dapm->debugfs_dapm, dapm,
2065 "ASoC: Failed to create bias level debugfs file\n");
2068 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2070 struct snd_soc_dapm_context *dapm = w->dapm;
2073 if (!dapm->debugfs_dapm || !w->name)
2076 d = debugfs_create_file(w->name, 0444,
2077 dapm->debugfs_dapm, w,
2078 &dapm_widget_power_fops);
2080 dev_warn(w->dapm->dev,
2081 "ASoC: Failed to create %s debugfs file\n",
2085 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2087 debugfs_remove_recursive(dapm->debugfs_dapm);
2091 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2092 struct dentry *parent)
2096 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2100 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2106 /* test and update the power status of a mux widget */
2107 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2108 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2110 struct snd_soc_dapm_path *path;
2113 /* find dapm widget path assoc with kcontrol */
2114 dapm_kcontrol_for_each_path(path, kcontrol) {
2115 if (!path->name || !e->texts[mux])
2119 /* we now need to match the string in the enum to the path */
2120 if (!(strcmp(path->name, e->texts[mux]))) {
2121 path->connect = 1; /* new connection */
2122 dapm_mark_dirty(path->source, "mux connection");
2125 dapm_mark_dirty(path->source,
2126 "mux disconnection");
2127 path->connect = 0; /* old connection must be powered down */
2129 dapm_mark_dirty(path->sink, "mux change");
2133 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2138 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2139 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2140 struct snd_soc_dapm_update *update)
2142 struct snd_soc_card *card = dapm->card;
2145 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2146 card->update = update;
2147 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2148 card->update = NULL;
2149 mutex_unlock(&card->dapm_mutex);
2151 soc_dpcm_runtime_update(card);
2154 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2156 /* test and update the power status of a mixer or switch widget */
2157 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2158 struct snd_kcontrol *kcontrol, int connect)
2160 struct snd_soc_dapm_path *path;
2163 /* find dapm widget path assoc with kcontrol */
2164 dapm_kcontrol_for_each_path(path, kcontrol) {
2166 path->connect = connect;
2167 dapm_mark_dirty(path->source, "mixer connection");
2168 dapm_mark_dirty(path->sink, "mixer update");
2172 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2177 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2178 struct snd_kcontrol *kcontrol, int connect,
2179 struct snd_soc_dapm_update *update)
2181 struct snd_soc_card *card = dapm->card;
2184 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2185 card->update = update;
2186 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2187 card->update = NULL;
2188 mutex_unlock(&card->dapm_mutex);
2190 soc_dpcm_runtime_update(card);
2193 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2195 /* show dapm widget status in sys fs */
2196 static ssize_t dapm_widget_show(struct device *dev,
2197 struct device_attribute *attr, char *buf)
2199 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2200 struct snd_soc_codec *codec =rtd->codec;
2201 struct snd_soc_dapm_widget *w;
2203 char *state = "not set";
2205 list_for_each_entry(w, &codec->card->widgets, list) {
2206 if (w->dapm != &codec->dapm)
2209 /* only display widgets that burnm power */
2211 case snd_soc_dapm_hp:
2212 case snd_soc_dapm_mic:
2213 case snd_soc_dapm_spk:
2214 case snd_soc_dapm_line:
2215 case snd_soc_dapm_micbias:
2216 case snd_soc_dapm_dac:
2217 case snd_soc_dapm_adc:
2218 case snd_soc_dapm_pga:
2219 case snd_soc_dapm_out_drv:
2220 case snd_soc_dapm_mixer:
2221 case snd_soc_dapm_mixer_named_ctl:
2222 case snd_soc_dapm_supply:
2223 case snd_soc_dapm_regulator_supply:
2224 case snd_soc_dapm_clock_supply:
2226 count += sprintf(buf + count, "%s: %s\n",
2227 w->name, w->power ? "On":"Off");
2234 switch (codec->dapm.bias_level) {
2235 case SND_SOC_BIAS_ON:
2238 case SND_SOC_BIAS_PREPARE:
2241 case SND_SOC_BIAS_STANDBY:
2244 case SND_SOC_BIAS_OFF:
2248 count += sprintf(buf + count, "PM State: %s\n", state);
2253 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2255 int snd_soc_dapm_sys_add(struct device *dev)
2257 return device_create_file(dev, &dev_attr_dapm_widget);
2260 static void snd_soc_dapm_sys_remove(struct device *dev)
2262 device_remove_file(dev, &dev_attr_dapm_widget);
2265 static void dapm_free_path(struct snd_soc_dapm_path *path)
2267 list_del(&path->list_sink);
2268 list_del(&path->list_source);
2269 list_del(&path->list_kcontrol);
2270 list_del(&path->list);
2274 /* free all dapm widgets and resources */
2275 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2277 struct snd_soc_dapm_widget *w, *next_w;
2278 struct snd_soc_dapm_path *p, *next_p;
2280 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2281 if (w->dapm != dapm)
2285 * remove source and sink paths associated to this widget.
2286 * While removing the path, remove reference to it from both
2287 * source and sink widgets so that path is removed only once.
2289 list_for_each_entry_safe(p, next_p, &w->sources, list_sink)
2292 list_for_each_entry_safe(p, next_p, &w->sinks, list_source)
2295 kfree(w->kcontrols);
2301 static struct snd_soc_dapm_widget *dapm_find_widget(
2302 struct snd_soc_dapm_context *dapm, const char *pin,
2303 bool search_other_contexts)
2305 struct snd_soc_dapm_widget *w;
2306 struct snd_soc_dapm_widget *fallback = NULL;
2308 list_for_each_entry(w, &dapm->card->widgets, list) {
2309 if (!strcmp(w->name, pin)) {
2310 if (w->dapm == dapm)
2317 if (search_other_contexts)
2323 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2324 const char *pin, int status)
2326 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2329 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2333 if (w->connected != status)
2334 dapm_mark_dirty(w, "pin configuration");
2336 w->connected = status;
2344 * snd_soc_dapm_sync - scan and power dapm paths
2345 * @dapm: DAPM context
2347 * Walks all dapm audio paths and powers widgets according to their
2348 * stream or path usage.
2350 * Returns 0 for success.
2352 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2357 * Suppress early reports (eg, jacks syncing their state) to avoid
2358 * silly DAPM runs during card startup.
2360 if (!dapm->card || !dapm->card->instantiated)
2363 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2364 ret = dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2365 mutex_unlock(&dapm->card->dapm_mutex);
2368 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2370 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2371 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2372 const char *control,
2373 int (*connected)(struct snd_soc_dapm_widget *source,
2374 struct snd_soc_dapm_widget *sink))
2376 struct snd_soc_dapm_path *path;
2379 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2383 path->source = wsource;
2385 path->connected = connected;
2386 INIT_LIST_HEAD(&path->list);
2387 INIT_LIST_HEAD(&path->list_kcontrol);
2388 INIT_LIST_HEAD(&path->list_source);
2389 INIT_LIST_HEAD(&path->list_sink);
2391 /* check for external widgets */
2392 if (wsink->id == snd_soc_dapm_input) {
2393 if (wsource->id == snd_soc_dapm_micbias ||
2394 wsource->id == snd_soc_dapm_mic ||
2395 wsource->id == snd_soc_dapm_line ||
2396 wsource->id == snd_soc_dapm_output)
2399 if (wsource->id == snd_soc_dapm_output) {
2400 if (wsink->id == snd_soc_dapm_spk ||
2401 wsink->id == snd_soc_dapm_hp ||
2402 wsink->id == snd_soc_dapm_line ||
2403 wsink->id == snd_soc_dapm_input)
2407 dapm_mark_dirty(wsource, "Route added");
2408 dapm_mark_dirty(wsink, "Route added");
2410 /* connect static paths */
2411 if (control == NULL) {
2412 list_add(&path->list, &dapm->card->paths);
2413 list_add(&path->list_sink, &wsink->sources);
2414 list_add(&path->list_source, &wsource->sinks);
2419 /* connect dynamic paths */
2420 switch (wsink->id) {
2421 case snd_soc_dapm_adc:
2422 case snd_soc_dapm_dac:
2423 case snd_soc_dapm_pga:
2424 case snd_soc_dapm_out_drv:
2425 case snd_soc_dapm_input:
2426 case snd_soc_dapm_output:
2427 case snd_soc_dapm_siggen:
2428 case snd_soc_dapm_micbias:
2429 case snd_soc_dapm_vmid:
2430 case snd_soc_dapm_pre:
2431 case snd_soc_dapm_post:
2432 case snd_soc_dapm_supply:
2433 case snd_soc_dapm_regulator_supply:
2434 case snd_soc_dapm_clock_supply:
2435 case snd_soc_dapm_aif_in:
2436 case snd_soc_dapm_aif_out:
2437 case snd_soc_dapm_dai_in:
2438 case snd_soc_dapm_dai_out:
2439 case snd_soc_dapm_dai_link:
2440 case snd_soc_dapm_kcontrol:
2441 list_add(&path->list, &dapm->card->paths);
2442 list_add(&path->list_sink, &wsink->sources);
2443 list_add(&path->list_source, &wsource->sinks);
2446 case snd_soc_dapm_mux:
2447 case snd_soc_dapm_virt_mux:
2448 case snd_soc_dapm_value_mux:
2449 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2450 &wsink->kcontrol_news[0]);
2454 case snd_soc_dapm_switch:
2455 case snd_soc_dapm_mixer:
2456 case snd_soc_dapm_mixer_named_ctl:
2457 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2461 case snd_soc_dapm_hp:
2462 case snd_soc_dapm_mic:
2463 case snd_soc_dapm_line:
2464 case snd_soc_dapm_spk:
2465 list_add(&path->list, &dapm->card->paths);
2466 list_add(&path->list_sink, &wsink->sources);
2467 list_add(&path->list_source, &wsource->sinks);
2478 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2479 const struct snd_soc_dapm_route *route,
2480 unsigned int is_prefixed)
2482 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2483 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2486 char prefixed_sink[80];
2487 char prefixed_source[80];
2490 if (dapm->codec && dapm->codec->name_prefix && !is_prefixed) {
2491 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2492 dapm->codec->name_prefix, route->sink);
2493 sink = prefixed_sink;
2494 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2495 dapm->codec->name_prefix, route->source);
2496 source = prefixed_source;
2499 source = route->source;
2503 * find src and dest widgets over all widgets but favor a widget from
2504 * current DAPM context
2506 list_for_each_entry(w, &dapm->card->widgets, list) {
2507 if (!wsink && !(strcmp(w->name, sink))) {
2509 if (w->dapm == dapm)
2513 if (!wsource && !(strcmp(w->name, source))) {
2515 if (w->dapm == dapm)
2519 /* use widget from another DAPM context if not found from this */
2525 if (wsource == NULL) {
2526 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2530 if (wsink == NULL) {
2531 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2536 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2543 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2544 source, route->control, sink);
2548 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2549 const struct snd_soc_dapm_route *route)
2551 struct snd_soc_dapm_path *path, *p;
2554 char prefixed_sink[80];
2555 char prefixed_source[80];
2557 if (route->control) {
2559 "ASoC: Removal of routes with controls not supported\n");
2563 if (dapm->codec && dapm->codec->name_prefix) {
2564 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2565 dapm->codec->name_prefix, route->sink);
2566 sink = prefixed_sink;
2567 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2568 dapm->codec->name_prefix, route->source);
2569 source = prefixed_source;
2572 source = route->source;
2576 list_for_each_entry(p, &dapm->card->paths, list) {
2577 if (strcmp(p->source->name, source) != 0)
2579 if (strcmp(p->sink->name, sink) != 0)
2586 dapm_mark_dirty(path->source, "Route removed");
2587 dapm_mark_dirty(path->sink, "Route removed");
2589 dapm_free_path(path);
2591 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2599 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2600 * @dapm: DAPM context
2601 * @route: audio routes
2602 * @num: number of routes
2604 * Connects 2 dapm widgets together via a named audio path. The sink is
2605 * the widget receiving the audio signal, whilst the source is the sender
2606 * of the audio signal.
2608 * Returns 0 for success else error. On error all resources can be freed
2609 * with a call to snd_soc_card_free().
2611 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2612 const struct snd_soc_dapm_route *route, int num)
2616 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2617 for (i = 0; i < num; i++) {
2618 r = snd_soc_dapm_add_route(dapm, route, false);
2620 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2622 route->control ? route->control : "direct",
2628 mutex_unlock(&dapm->card->dapm_mutex);
2632 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2635 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2636 * @dapm: DAPM context
2637 * @route: audio routes
2638 * @num: number of routes
2640 * Removes routes from the DAPM context.
2642 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2643 const struct snd_soc_dapm_route *route, int num)
2647 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2648 for (i = 0; i < num; i++) {
2649 snd_soc_dapm_del_route(dapm, route);
2652 mutex_unlock(&dapm->card->dapm_mutex);
2656 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2658 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2659 const struct snd_soc_dapm_route *route)
2661 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2664 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2667 struct snd_soc_dapm_path *path;
2671 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2677 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2682 if (route->control || route->connected)
2683 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2684 route->source, route->sink);
2686 list_for_each_entry(path, &source->sinks, list_source) {
2687 if (path->sink == sink) {
2694 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2695 route->source, route->sink);
2697 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2698 count, route->source, route->sink);
2704 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2705 * @dapm: DAPM context
2706 * @route: audio routes
2707 * @num: number of routes
2709 * Mark existing routes matching those specified in the passed array
2710 * as being weak, meaning that they are ignored for the purpose of
2711 * power decisions. The main intended use case is for sidetone paths
2712 * which couple audio between other independent paths if they are both
2713 * active in order to make the combination work better at the user
2714 * level but which aren't intended to be "used".
2716 * Note that CODEC drivers should not use this as sidetone type paths
2717 * can frequently also be used as bypass paths.
2719 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2720 const struct snd_soc_dapm_route *route, int num)
2725 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2726 for (i = 0; i < num; i++) {
2727 err = snd_soc_dapm_weak_route(dapm, route);
2732 mutex_unlock(&dapm->card->dapm_mutex);
2736 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2739 * snd_soc_dapm_new_widgets - add new dapm widgets
2740 * @dapm: DAPM context
2742 * Checks the codec for any new dapm widgets and creates them if found.
2744 * Returns 0 for success.
2746 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2748 struct snd_soc_dapm_widget *w;
2751 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2753 list_for_each_entry(w, &card->widgets, list)
2758 if (w->num_kcontrols) {
2759 w->kcontrols = kzalloc(w->num_kcontrols *
2760 sizeof(struct snd_kcontrol *),
2762 if (!w->kcontrols) {
2763 mutex_unlock(&card->dapm_mutex);
2769 case snd_soc_dapm_switch:
2770 case snd_soc_dapm_mixer:
2771 case snd_soc_dapm_mixer_named_ctl:
2774 case snd_soc_dapm_mux:
2775 case snd_soc_dapm_virt_mux:
2776 case snd_soc_dapm_value_mux:
2779 case snd_soc_dapm_pga:
2780 case snd_soc_dapm_out_drv:
2787 /* Read the initial power state from the device */
2789 soc_widget_read(w, w->reg, &val);
2790 val = val >> w->shift;
2792 if (val == w->on_val)
2798 dapm_mark_dirty(w, "new widget");
2799 dapm_debugfs_add_widget(w);
2802 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2803 mutex_unlock(&card->dapm_mutex);
2806 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2809 * snd_soc_dapm_get_volsw - dapm mixer get callback
2810 * @kcontrol: mixer control
2811 * @ucontrol: control element information
2813 * Callback to get the value of a dapm mixer control.
2815 * Returns 0 for success.
2817 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2818 struct snd_ctl_elem_value *ucontrol)
2820 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2821 struct snd_soc_card *card = codec->card;
2822 struct soc_mixer_control *mc =
2823 (struct soc_mixer_control *)kcontrol->private_value;
2825 unsigned int shift = mc->shift;
2827 unsigned int mask = (1 << fls(max)) - 1;
2828 unsigned int invert = mc->invert;
2831 if (snd_soc_volsw_is_stereo(mc))
2832 dev_warn(codec->dapm.dev,
2833 "ASoC: Control '%s' is stereo, which is not supported\n",
2836 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2837 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM)
2838 val = (snd_soc_read(codec, reg) >> shift) & mask;
2840 val = dapm_kcontrol_get_value(kcontrol);
2841 mutex_unlock(&card->dapm_mutex);
2844 ucontrol->value.integer.value[0] = max - val;
2846 ucontrol->value.integer.value[0] = val;
2850 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2853 * snd_soc_dapm_put_volsw - dapm mixer set callback
2854 * @kcontrol: mixer control
2855 * @ucontrol: control element information
2857 * Callback to set the value of a dapm mixer control.
2859 * Returns 0 for success.
2861 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2862 struct snd_ctl_elem_value *ucontrol)
2864 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2865 struct snd_soc_card *card = codec->card;
2866 struct soc_mixer_control *mc =
2867 (struct soc_mixer_control *)kcontrol->private_value;
2869 unsigned int shift = mc->shift;
2871 unsigned int mask = (1 << fls(max)) - 1;
2872 unsigned int invert = mc->invert;
2874 int connect, change;
2875 struct snd_soc_dapm_update update;
2878 if (snd_soc_volsw_is_stereo(mc))
2879 dev_warn(codec->dapm.dev,
2880 "ASoC: Control '%s' is stereo, which is not supported\n",
2883 val = (ucontrol->value.integer.value[0] & mask);
2889 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2891 change = dapm_kcontrol_set_value(kcontrol, val);
2893 if (reg != SND_SOC_NOPM) {
2894 mask = mask << shift;
2897 change = snd_soc_test_bits(codec, reg, mask, val);
2901 if (reg != SND_SOC_NOPM) {
2902 update.kcontrol = kcontrol;
2907 card->update = &update;
2910 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2912 card->update = NULL;
2915 mutex_unlock(&card->dapm_mutex);
2918 soc_dpcm_runtime_update(card);
2922 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2925 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2926 * @kcontrol: mixer control
2927 * @ucontrol: control element information
2929 * Callback to get the value of a dapm enumerated double mixer control.
2931 * Returns 0 for success.
2933 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2934 struct snd_ctl_elem_value *ucontrol)
2936 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2937 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2940 val = snd_soc_read(codec, e->reg);
2941 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2942 if (e->shift_l != e->shift_r)
2943 ucontrol->value.enumerated.item[1] =
2944 (val >> e->shift_r) & e->mask;
2948 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2951 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2952 * @kcontrol: mixer control
2953 * @ucontrol: control element information
2955 * Callback to set the value of a dapm enumerated double mixer control.
2957 * Returns 0 for success.
2959 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2960 struct snd_ctl_elem_value *ucontrol)
2962 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
2963 struct snd_soc_card *card = codec->card;
2964 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2965 unsigned int val, mux, change;
2967 struct snd_soc_dapm_update update;
2970 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2972 mux = ucontrol->value.enumerated.item[0];
2973 val = mux << e->shift_l;
2974 mask = e->mask << e->shift_l;
2975 if (e->shift_l != e->shift_r) {
2976 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2978 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2979 mask |= e->mask << e->shift_r;
2982 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2984 change = snd_soc_test_bits(codec, e->reg, mask, val);
2986 update.kcontrol = kcontrol;
2987 update.reg = e->reg;
2990 card->update = &update;
2992 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2994 card->update = NULL;
2997 mutex_unlock(&card->dapm_mutex);
3000 soc_dpcm_runtime_update(card);
3004 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3007 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
3008 * @kcontrol: mixer control
3009 * @ucontrol: control element information
3011 * Returns 0 for success.
3013 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
3014 struct snd_ctl_elem_value *ucontrol)
3016 ucontrol->value.enumerated.item[0] = dapm_kcontrol_get_value(kcontrol);
3019 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
3022 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
3023 * @kcontrol: mixer control
3024 * @ucontrol: control element information
3026 * Returns 0 for success.
3028 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
3029 struct snd_ctl_elem_value *ucontrol)
3031 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
3032 struct snd_soc_card *card = codec->card;
3034 struct soc_enum *e =
3035 (struct soc_enum *)kcontrol->private_value;
3039 if (ucontrol->value.enumerated.item[0] >= e->max)
3042 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3044 value = ucontrol->value.enumerated.item[0];
3045 change = dapm_kcontrol_set_value(kcontrol, value);
3047 ret = soc_dapm_mux_update_power(card, kcontrol, value, e);
3049 mutex_unlock(&card->dapm_mutex);
3052 soc_dpcm_runtime_update(card);
3056 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
3059 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
3061 * @kcontrol: mixer control
3062 * @ucontrol: control element information
3064 * Callback to get the value of a dapm semi enumerated double mixer control.
3066 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3067 * used for handling bitfield coded enumeration for example.
3069 * Returns 0 for success.
3071 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
3072 struct snd_ctl_elem_value *ucontrol)
3074 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
3075 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3076 unsigned int reg_val, val, mux;
3078 reg_val = snd_soc_read(codec, e->reg);
3079 val = (reg_val >> e->shift_l) & e->mask;
3080 for (mux = 0; mux < e->max; mux++) {
3081 if (val == e->values[mux])
3084 ucontrol->value.enumerated.item[0] = mux;
3085 if (e->shift_l != e->shift_r) {
3086 val = (reg_val >> e->shift_r) & e->mask;
3087 for (mux = 0; mux < e->max; mux++) {
3088 if (val == e->values[mux])
3091 ucontrol->value.enumerated.item[1] = mux;
3096 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
3099 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
3101 * @kcontrol: mixer control
3102 * @ucontrol: control element information
3104 * Callback to set the value of a dapm semi enumerated double mixer control.
3106 * Semi enumerated mixer: the enumerated items are referred as values. Can be
3107 * used for handling bitfield coded enumeration for example.
3109 * Returns 0 for success.
3111 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
3112 struct snd_ctl_elem_value *ucontrol)
3114 struct snd_soc_codec *codec = snd_soc_dapm_kcontrol_codec(kcontrol);
3115 struct snd_soc_card *card = codec->card;
3116 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3117 unsigned int val, mux, change;
3119 struct snd_soc_dapm_update update;
3122 if (ucontrol->value.enumerated.item[0] > e->max - 1)
3124 mux = ucontrol->value.enumerated.item[0];
3125 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
3126 mask = e->mask << e->shift_l;
3127 if (e->shift_l != e->shift_r) {
3128 if (ucontrol->value.enumerated.item[1] > e->max - 1)
3130 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
3131 mask |= e->mask << e->shift_r;
3134 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3136 change = snd_soc_test_bits(codec, e->reg, mask, val);
3138 update.kcontrol = kcontrol;
3139 update.reg = e->reg;
3142 card->update = &update;
3144 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
3146 card->update = NULL;
3149 mutex_unlock(&card->dapm_mutex);
3152 soc_dpcm_runtime_update(card);
3156 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
3159 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3161 * @kcontrol: mixer control
3162 * @uinfo: control element information
3164 * Callback to provide information about a pin switch control.
3166 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3167 struct snd_ctl_elem_info *uinfo)
3169 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3171 uinfo->value.integer.min = 0;
3172 uinfo->value.integer.max = 1;
3176 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3179 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3181 * @kcontrol: mixer control
3184 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3185 struct snd_ctl_elem_value *ucontrol)
3187 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3188 const char *pin = (const char *)kcontrol->private_value;
3190 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3192 ucontrol->value.integer.value[0] =
3193 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3195 mutex_unlock(&card->dapm_mutex);
3199 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3202 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3204 * @kcontrol: mixer control
3207 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3208 struct snd_ctl_elem_value *ucontrol)
3210 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3211 const char *pin = (const char *)kcontrol->private_value;
3213 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3215 if (ucontrol->value.integer.value[0])
3216 snd_soc_dapm_enable_pin(&card->dapm, pin);
3218 snd_soc_dapm_disable_pin(&card->dapm, pin);
3220 mutex_unlock(&card->dapm_mutex);
3222 snd_soc_dapm_sync(&card->dapm);
3225 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3227 static struct snd_soc_dapm_widget *
3228 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3229 const struct snd_soc_dapm_widget *widget)
3231 struct snd_soc_dapm_widget *w;
3234 if ((w = dapm_cnew_widget(widget)) == NULL)
3238 case snd_soc_dapm_regulator_supply:
3239 w->regulator = devm_regulator_get(dapm->dev, w->name);
3240 if (IS_ERR(w->regulator)) {
3241 ret = PTR_ERR(w->regulator);
3242 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3247 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3248 ret = regulator_allow_bypass(w->regulator, true);
3250 dev_warn(w->dapm->dev,
3251 "ASoC: Failed to unbypass %s: %d\n",
3255 case snd_soc_dapm_clock_supply:
3256 #ifdef CONFIG_CLKDEV_LOOKUP
3257 w->clk = devm_clk_get(dapm->dev, w->name);
3258 if (IS_ERR(w->clk)) {
3259 ret = PTR_ERR(w->clk);
3260 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3272 if (dapm->codec && dapm->codec->name_prefix)
3273 w->name = kasprintf(GFP_KERNEL, "%s %s",
3274 dapm->codec->name_prefix, widget->name);
3276 w->name = kasprintf(GFP_KERNEL, "%s", widget->name);
3278 if (w->name == NULL) {
3284 case snd_soc_dapm_switch:
3285 case snd_soc_dapm_mixer:
3286 case snd_soc_dapm_mixer_named_ctl:
3287 w->power_check = dapm_generic_check_power;
3289 case snd_soc_dapm_mux:
3290 case snd_soc_dapm_virt_mux:
3291 case snd_soc_dapm_value_mux:
3292 w->power_check = dapm_generic_check_power;
3294 case snd_soc_dapm_dai_out:
3295 w->power_check = dapm_adc_check_power;
3297 case snd_soc_dapm_dai_in:
3298 w->power_check = dapm_dac_check_power;
3300 case snd_soc_dapm_adc:
3301 case snd_soc_dapm_aif_out:
3302 case snd_soc_dapm_dac:
3303 case snd_soc_dapm_aif_in:
3304 case snd_soc_dapm_pga:
3305 case snd_soc_dapm_out_drv:
3306 case snd_soc_dapm_input:
3307 case snd_soc_dapm_output:
3308 case snd_soc_dapm_micbias:
3309 case snd_soc_dapm_spk:
3310 case snd_soc_dapm_hp:
3311 case snd_soc_dapm_mic:
3312 case snd_soc_dapm_line:
3313 case snd_soc_dapm_dai_link:
3314 w->power_check = dapm_generic_check_power;
3316 case snd_soc_dapm_supply:
3317 case snd_soc_dapm_regulator_supply:
3318 case snd_soc_dapm_clock_supply:
3319 case snd_soc_dapm_kcontrol:
3320 w->power_check = dapm_supply_check_power;
3323 w->power_check = dapm_always_on_check_power;
3328 w->codec = dapm->codec;
3329 w->platform = dapm->platform;
3330 INIT_LIST_HEAD(&w->sources);
3331 INIT_LIST_HEAD(&w->sinks);
3332 INIT_LIST_HEAD(&w->list);
3333 INIT_LIST_HEAD(&w->dirty);
3334 list_add(&w->list, &dapm->card->widgets);
3336 /* machine layer set ups unconnected pins and insertions */
3342 * snd_soc_dapm_new_controls - create new dapm controls
3343 * @dapm: DAPM context
3344 * @widget: widget array
3345 * @num: number of widgets
3347 * Creates new DAPM controls based upon the templates.
3349 * Returns 0 for success else error.
3351 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3352 const struct snd_soc_dapm_widget *widget,
3355 struct snd_soc_dapm_widget *w;
3359 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3360 for (i = 0; i < num; i++) {
3361 w = snd_soc_dapm_new_control(dapm, widget);
3364 "ASoC: Failed to create DAPM control %s\n",
3371 mutex_unlock(&dapm->card->dapm_mutex);
3374 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3376 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3377 struct snd_kcontrol *kcontrol, int event)
3379 struct snd_soc_dapm_path *source_p, *sink_p;
3380 struct snd_soc_dai *source, *sink;
3381 const struct snd_soc_pcm_stream *config = w->params;
3382 struct snd_pcm_substream substream;
3383 struct snd_pcm_hw_params *params = NULL;
3387 if (WARN_ON(!config) ||
3388 WARN_ON(list_empty(&w->sources) || list_empty(&w->sinks)))
3391 /* We only support a single source and sink, pick the first */
3392 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3394 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3397 if (WARN_ON(!source_p || !sink_p) ||
3398 WARN_ON(!sink_p->source || !source_p->sink) ||
3399 WARN_ON(!source_p->source || !sink_p->sink))
3402 source = source_p->source->priv;
3403 sink = sink_p->sink->priv;
3405 /* Be a little careful as we don't want to overflow the mask array */
3406 if (config->formats) {
3407 fmt = ffs(config->formats) - 1;
3409 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3414 /* Currently very limited parameter selection */
3415 params = kzalloc(sizeof(*params), GFP_KERNEL);
3420 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3422 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3424 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3427 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3428 = config->channels_min;
3429 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3430 = config->channels_max;
3432 memset(&substream, 0, sizeof(substream));
3435 case SND_SOC_DAPM_PRE_PMU:
3436 if (source->driver->ops && source->driver->ops->hw_params) {
3437 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3438 ret = source->driver->ops->hw_params(&substream,
3441 dev_err(source->dev,
3442 "ASoC: hw_params() failed: %d\n", ret);
3447 if (sink->driver->ops && sink->driver->ops->hw_params) {
3448 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3449 ret = sink->driver->ops->hw_params(&substream, params,
3453 "ASoC: hw_params() failed: %d\n", ret);
3459 case SND_SOC_DAPM_POST_PMU:
3460 ret = snd_soc_dai_digital_mute(sink, 0,
3461 SNDRV_PCM_STREAM_PLAYBACK);
3462 if (ret != 0 && ret != -ENOTSUPP)
3463 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3467 case SND_SOC_DAPM_PRE_PMD:
3468 ret = snd_soc_dai_digital_mute(sink, 1,
3469 SNDRV_PCM_STREAM_PLAYBACK);
3470 if (ret != 0 && ret != -ENOTSUPP)
3471 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3476 WARN(1, "Unknown event %d\n", event);
3485 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3486 const struct snd_soc_pcm_stream *params,
3487 struct snd_soc_dapm_widget *source,
3488 struct snd_soc_dapm_widget *sink)
3490 struct snd_soc_dapm_route routes[2];
3491 struct snd_soc_dapm_widget template;
3492 struct snd_soc_dapm_widget *w;
3496 len = strlen(source->name) + strlen(sink->name) + 2;
3497 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3500 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3502 memset(&template, 0, sizeof(template));
3503 template.reg = SND_SOC_NOPM;
3504 template.id = snd_soc_dapm_dai_link;
3505 template.name = link_name;
3506 template.event = snd_soc_dai_link_event;
3507 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3508 SND_SOC_DAPM_PRE_PMD;
3510 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3512 w = snd_soc_dapm_new_control(&card->dapm, &template);
3514 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3521 memset(&routes, 0, sizeof(routes));
3523 routes[0].source = source->name;
3524 routes[0].sink = link_name;
3525 routes[1].source = link_name;
3526 routes[1].sink = sink->name;
3528 return snd_soc_dapm_add_routes(&card->dapm, routes,
3529 ARRAY_SIZE(routes));
3532 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3533 struct snd_soc_dai *dai)
3535 struct snd_soc_dapm_widget template;
3536 struct snd_soc_dapm_widget *w;
3538 WARN_ON(dapm->dev != dai->dev);
3540 memset(&template, 0, sizeof(template));
3541 template.reg = SND_SOC_NOPM;
3543 if (dai->driver->playback.stream_name) {
3544 template.id = snd_soc_dapm_dai_in;
3545 template.name = dai->driver->playback.stream_name;
3546 template.sname = dai->driver->playback.stream_name;
3548 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3551 w = snd_soc_dapm_new_control(dapm, &template);
3553 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3554 dai->driver->playback.stream_name);
3559 dai->playback_widget = w;
3562 if (dai->driver->capture.stream_name) {
3563 template.id = snd_soc_dapm_dai_out;
3564 template.name = dai->driver->capture.stream_name;
3565 template.sname = dai->driver->capture.stream_name;
3567 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3570 w = snd_soc_dapm_new_control(dapm, &template);
3572 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3573 dai->driver->capture.stream_name);
3578 dai->capture_widget = w;
3584 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3586 struct snd_soc_dapm_widget *dai_w, *w;
3587 struct snd_soc_dai *dai;
3589 /* For each DAI widget... */
3590 list_for_each_entry(dai_w, &card->widgets, list) {
3591 switch (dai_w->id) {
3592 case snd_soc_dapm_dai_in:
3593 case snd_soc_dapm_dai_out:
3601 /* ...find all widgets with the same stream and link them */
3602 list_for_each_entry(w, &card->widgets, list) {
3603 if (w->dapm != dai_w->dapm)
3607 case snd_soc_dapm_dai_in:
3608 case snd_soc_dapm_dai_out:
3614 if (!w->sname || !strstr(w->sname, dai_w->name))
3617 if (dai->driver->playback.stream_name &&
3619 dai->driver->playback.stream_name)) {
3620 dev_dbg(dai->dev, "%s -> %s\n",
3621 dai->playback_widget->name, w->name);
3623 snd_soc_dapm_add_path(w->dapm,
3624 dai->playback_widget, w, NULL, NULL);
3627 if (dai->driver->capture.stream_name &&
3629 dai->driver->capture.stream_name)) {
3630 dev_dbg(dai->dev, "%s -> %s\n",
3631 w->name, dai->capture_widget->name);
3633 snd_soc_dapm_add_path(w->dapm, w,
3634 dai->capture_widget, NULL, NULL);
3642 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3644 struct snd_soc_pcm_runtime *rtd = card->rtd;
3645 struct snd_soc_dai *cpu_dai, *codec_dai;
3646 struct snd_soc_dapm_route r;
3649 memset(&r, 0, sizeof(r));
3651 /* for each BE DAI link... */
3652 for (i = 0; i < card->num_rtd; i++) {
3653 rtd = &card->rtd[i];
3654 cpu_dai = rtd->cpu_dai;
3655 codec_dai = rtd->codec_dai;
3657 /* dynamic FE links have no fixed DAI mapping */
3658 if (rtd->dai_link->dynamic)
3661 /* there is no point in connecting BE DAI links with dummies */
3662 if (snd_soc_dai_is_dummy(codec_dai) ||
3663 snd_soc_dai_is_dummy(cpu_dai))
3666 /* connect BE DAI playback if widgets are valid */
3667 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3668 r.source = cpu_dai->playback_widget->name;
3669 r.sink = codec_dai->playback_widget->name;
3670 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3671 cpu_dai->codec->name, r.source,
3672 codec_dai->platform->name, r.sink);
3674 snd_soc_dapm_add_route(&card->dapm, &r, true);
3677 /* connect BE DAI capture if widgets are valid */
3678 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3679 r.source = codec_dai->capture_widget->name;
3680 r.sink = cpu_dai->capture_widget->name;
3681 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3682 codec_dai->codec->name, r.source,
3683 cpu_dai->platform->name, r.sink);
3685 snd_soc_dapm_add_route(&card->dapm, &r, true);
3691 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3695 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3696 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3697 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3699 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3700 w_cpu = cpu_dai->playback_widget;
3701 w_codec = codec_dai->playback_widget;
3703 w_cpu = cpu_dai->capture_widget;
3704 w_codec = codec_dai->capture_widget;
3709 dapm_mark_dirty(w_cpu, "stream event");
3712 case SND_SOC_DAPM_STREAM_START:
3715 case SND_SOC_DAPM_STREAM_STOP:
3718 case SND_SOC_DAPM_STREAM_SUSPEND:
3719 case SND_SOC_DAPM_STREAM_RESUME:
3720 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3721 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3728 dapm_mark_dirty(w_codec, "stream event");
3731 case SND_SOC_DAPM_STREAM_START:
3732 w_codec->active = 1;
3734 case SND_SOC_DAPM_STREAM_STOP:
3735 w_codec->active = 0;
3737 case SND_SOC_DAPM_STREAM_SUSPEND:
3738 case SND_SOC_DAPM_STREAM_RESUME:
3739 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3740 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3745 dapm_power_widgets(rtd->card, event);
3749 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3750 * @rtd: PCM runtime data
3751 * @stream: stream name
3752 * @event: stream event
3754 * Sends a stream event to the dapm core. The core then makes any
3755 * necessary widget power changes.
3757 * Returns 0 for success else error.
3759 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3762 struct snd_soc_card *card = rtd->card;
3764 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3765 soc_dapm_stream_event(rtd, stream, event);
3766 mutex_unlock(&card->dapm_mutex);
3770 * snd_soc_dapm_enable_pin - enable pin.
3771 * @dapm: DAPM context
3774 * Enables input/output pin and its parents or children widgets iff there is
3775 * a valid audio route and active audio stream.
3776 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3777 * do any widget power switching.
3779 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3781 return snd_soc_dapm_set_pin(dapm, pin, 1);
3783 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3786 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3787 * @dapm: DAPM context
3790 * Enables input/output pin regardless of any other state. This is
3791 * intended for use with microphone bias supplies used in microphone
3794 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3795 * do any widget power switching.
3797 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3800 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3803 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3807 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3810 dapm_mark_dirty(w, "force enable");
3814 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3817 * snd_soc_dapm_disable_pin - disable pin.
3818 * @dapm: DAPM context
3821 * Disables input/output pin and its parents or children widgets.
3822 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3823 * do any widget power switching.
3825 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3828 return snd_soc_dapm_set_pin(dapm, pin, 0);
3830 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3833 * snd_soc_dapm_nc_pin - permanently disable pin.
3834 * @dapm: DAPM context
3837 * Marks the specified pin as being not connected, disabling it along
3838 * any parent or child widgets. At present this is identical to
3839 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3840 * additional things such as disabling controls which only affect
3841 * paths through the pin.
3843 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3844 * do any widget power switching.
3846 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3848 return snd_soc_dapm_set_pin(dapm, pin, 0);
3850 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3853 * snd_soc_dapm_get_pin_status - get audio pin status
3854 * @dapm: DAPM context
3855 * @pin: audio signal pin endpoint (or start point)
3857 * Get audio pin status - connected or disconnected.
3859 * Returns 1 for connected otherwise 0.
3861 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3864 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3867 return w->connected;
3871 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3874 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3875 * @dapm: DAPM context
3876 * @pin: audio signal pin endpoint (or start point)
3878 * Mark the given endpoint or pin as ignoring suspend. When the
3879 * system is disabled a path between two endpoints flagged as ignoring
3880 * suspend will not be disabled. The path must already be enabled via
3881 * normal means at suspend time, it will not be turned on if it was not
3884 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3887 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3890 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3894 w->ignore_suspend = 1;
3898 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3900 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3901 struct snd_soc_dapm_widget *w)
3903 struct snd_soc_dapm_path *p;
3905 list_for_each_entry(p, &card->paths, list) {
3906 if ((p->source == w) || (p->sink == w)) {
3908 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3909 p->source->name, p->source->id, p->source->dapm,
3910 p->sink->name, p->sink->id, p->sink->dapm);
3912 /* Connected to something other than the codec */
3913 if (p->source->dapm != p->sink->dapm)
3916 * Loopback connection from codec external pin to
3917 * codec external pin
3919 if (p->sink->id == snd_soc_dapm_input) {
3920 switch (p->source->id) {
3921 case snd_soc_dapm_output:
3922 case snd_soc_dapm_micbias:
3935 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3936 * @codec: The codec whose pins should be processed
3938 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3939 * which are unused. Pins are used if they are connected externally to the
3940 * codec, whether that be to some other device, or a loop-back connection to
3943 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3945 struct snd_soc_card *card = codec->card;
3946 struct snd_soc_dapm_context *dapm = &codec->dapm;
3947 struct snd_soc_dapm_widget *w;
3949 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3950 &card->dapm, &codec->dapm);
3952 list_for_each_entry(w, &card->widgets, list) {
3953 if (w->dapm != dapm)
3956 case snd_soc_dapm_input:
3957 case snd_soc_dapm_output:
3958 case snd_soc_dapm_micbias:
3959 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3961 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3963 "... Not in map; disabling\n");
3964 snd_soc_dapm_nc_pin(dapm, w->name);
3974 * snd_soc_dapm_free - free dapm resources
3975 * @dapm: DAPM context
3977 * Free all dapm widgets and resources.
3979 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3981 snd_soc_dapm_sys_remove(dapm->dev);
3982 dapm_debugfs_cleanup(dapm);
3983 dapm_free_widgets(dapm);
3984 list_del(&dapm->list);
3986 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3988 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
3990 struct snd_soc_card *card = dapm->card;
3991 struct snd_soc_dapm_widget *w;
3992 LIST_HEAD(down_list);
3995 mutex_lock(&card->dapm_mutex);
3997 list_for_each_entry(w, &dapm->card->widgets, list) {
3998 if (w->dapm != dapm)
4001 dapm_seq_insert(w, &down_list, false);
4007 /* If there were no widgets to power down we're already in
4011 if (dapm->bias_level == SND_SOC_BIAS_ON)
4012 snd_soc_dapm_set_bias_level(dapm,
4013 SND_SOC_BIAS_PREPARE);
4014 dapm_seq_run(card, &down_list, 0, false);
4015 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4016 snd_soc_dapm_set_bias_level(dapm,
4017 SND_SOC_BIAS_STANDBY);
4020 mutex_unlock(&card->dapm_mutex);
4024 * snd_soc_dapm_shutdown - callback for system shutdown
4026 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4028 struct snd_soc_codec *codec;
4030 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
4031 soc_dapm_shutdown_codec(&codec->dapm);
4032 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4033 snd_soc_dapm_set_bias_level(&codec->dapm,
4038 /* Module information */
4039 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4040 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4041 MODULE_LICENSE("GPL");