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 /* dapm power sequences - make this per codec in the future */
51 static int dapm_up_seq[] = {
52 [snd_soc_dapm_pre] = 0,
53 [snd_soc_dapm_supply] = 1,
54 [snd_soc_dapm_regulator_supply] = 1,
55 [snd_soc_dapm_clock_supply] = 1,
56 [snd_soc_dapm_micbias] = 2,
57 [snd_soc_dapm_dai_link] = 2,
58 [snd_soc_dapm_dai] = 3,
59 [snd_soc_dapm_aif_in] = 3,
60 [snd_soc_dapm_aif_out] = 3,
61 [snd_soc_dapm_mic] = 4,
62 [snd_soc_dapm_mux] = 5,
63 [snd_soc_dapm_virt_mux] = 5,
64 [snd_soc_dapm_value_mux] = 5,
65 [snd_soc_dapm_dac] = 6,
66 [snd_soc_dapm_switch] = 7,
67 [snd_soc_dapm_mixer] = 7,
68 [snd_soc_dapm_mixer_named_ctl] = 7,
69 [snd_soc_dapm_pga] = 8,
70 [snd_soc_dapm_adc] = 9,
71 [snd_soc_dapm_out_drv] = 10,
72 [snd_soc_dapm_hp] = 10,
73 [snd_soc_dapm_spk] = 10,
74 [snd_soc_dapm_line] = 10,
75 [snd_soc_dapm_post] = 11,
78 static int dapm_down_seq[] = {
79 [snd_soc_dapm_pre] = 0,
80 [snd_soc_dapm_adc] = 1,
81 [snd_soc_dapm_hp] = 2,
82 [snd_soc_dapm_spk] = 2,
83 [snd_soc_dapm_line] = 2,
84 [snd_soc_dapm_out_drv] = 2,
85 [snd_soc_dapm_pga] = 4,
86 [snd_soc_dapm_switch] = 5,
87 [snd_soc_dapm_mixer_named_ctl] = 5,
88 [snd_soc_dapm_mixer] = 5,
89 [snd_soc_dapm_dac] = 6,
90 [snd_soc_dapm_mic] = 7,
91 [snd_soc_dapm_micbias] = 8,
92 [snd_soc_dapm_mux] = 9,
93 [snd_soc_dapm_virt_mux] = 9,
94 [snd_soc_dapm_value_mux] = 9,
95 [snd_soc_dapm_aif_in] = 10,
96 [snd_soc_dapm_aif_out] = 10,
97 [snd_soc_dapm_dai] = 10,
98 [snd_soc_dapm_dai_link] = 11,
99 [snd_soc_dapm_clock_supply] = 12,
100 [snd_soc_dapm_regulator_supply] = 12,
101 [snd_soc_dapm_supply] = 12,
102 [snd_soc_dapm_post] = 13,
105 static void pop_wait(u32 pop_time)
108 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
111 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
119 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
124 vsnprintf(buf, PAGE_SIZE, fmt, args);
125 dev_info(dev, "%s", buf);
131 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
133 return !list_empty(&w->dirty);
136 void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
138 if (!dapm_dirty_widget(w)) {
139 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
141 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
144 EXPORT_SYMBOL_GPL(dapm_mark_dirty);
146 void dapm_mark_io_dirty(struct snd_soc_dapm_context *dapm)
148 struct snd_soc_card *card = dapm->card;
149 struct snd_soc_dapm_widget *w;
151 mutex_lock(&card->dapm_mutex);
153 list_for_each_entry(w, &card->widgets, list) {
155 case snd_soc_dapm_input:
156 case snd_soc_dapm_output:
157 dapm_mark_dirty(w, "Rechecking inputs and outputs");
164 mutex_unlock(&card->dapm_mutex);
166 EXPORT_SYMBOL_GPL(dapm_mark_io_dirty);
168 /* create a new dapm widget */
169 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
170 const struct snd_soc_dapm_widget *_widget)
172 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
175 /* get snd_card from DAPM context */
176 static inline struct snd_card *dapm_get_snd_card(
177 struct snd_soc_dapm_context *dapm)
180 return dapm->codec->card->snd_card;
181 else if (dapm->platform)
182 return dapm->platform->card->snd_card;
190 /* get soc_card from DAPM context */
191 static inline struct snd_soc_card *dapm_get_soc_card(
192 struct snd_soc_dapm_context *dapm)
195 return dapm->codec->card;
196 else if (dapm->platform)
197 return dapm->platform->card;
205 static void dapm_reset(struct snd_soc_card *card)
207 struct snd_soc_dapm_widget *w;
209 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
211 list_for_each_entry(w, &card->widgets, list) {
212 w->power_checked = false;
218 static int soc_widget_read(struct snd_soc_dapm_widget *w, int reg)
221 return snd_soc_read(w->codec, reg);
222 else if (w->platform)
223 return snd_soc_platform_read(w->platform, reg);
225 dev_err(w->dapm->dev, "ASoC: no valid widget read method\n");
229 static int soc_widget_write(struct snd_soc_dapm_widget *w, int reg, int val)
232 return snd_soc_write(w->codec, reg, val);
233 else if (w->platform)
234 return snd_soc_platform_write(w->platform, reg, val);
236 dev_err(w->dapm->dev, "ASoC: no valid widget write method\n");
240 static inline void soc_widget_lock(struct snd_soc_dapm_widget *w)
242 if (w->codec && !w->codec->using_regmap)
243 mutex_lock(&w->codec->mutex);
244 else if (w->platform)
245 mutex_lock(&w->platform->mutex);
248 static inline void soc_widget_unlock(struct snd_soc_dapm_widget *w)
250 if (w->codec && !w->codec->using_regmap)
251 mutex_unlock(&w->codec->mutex);
252 else if (w->platform)
253 mutex_unlock(&w->platform->mutex);
256 static int soc_widget_update_bits_locked(struct snd_soc_dapm_widget *w,
257 unsigned short reg, unsigned int mask, unsigned int value)
260 unsigned int old, new;
263 if (w->codec && w->codec->using_regmap) {
264 ret = regmap_update_bits_check(w->codec->control_data,
265 reg, mask, value, &change);
270 ret = soc_widget_read(w, reg);
272 soc_widget_unlock(w);
277 new = (old & ~mask) | (value & mask);
280 ret = soc_widget_write(w, reg, new);
282 soc_widget_unlock(w);
286 soc_widget_unlock(w);
293 * snd_soc_dapm_set_bias_level - set the bias level for the system
294 * @dapm: DAPM context
295 * @level: level to configure
297 * Configure the bias (power) levels for the SoC audio device.
299 * Returns 0 for success else error.
301 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
302 enum snd_soc_bias_level level)
304 struct snd_soc_card *card = dapm->card;
307 trace_snd_soc_bias_level_start(card, level);
309 if (card && card->set_bias_level)
310 ret = card->set_bias_level(card, dapm, level);
315 if (dapm->codec->driver->set_bias_level)
316 ret = dapm->codec->driver->set_bias_level(dapm->codec,
319 dapm->bias_level = level;
320 } else if (!card || dapm != &card->dapm) {
321 dapm->bias_level = level;
327 if (card && card->set_bias_level_post)
328 ret = card->set_bias_level_post(card, dapm, level);
330 trace_snd_soc_bias_level_done(card, level);
335 /* set up initial codec paths */
336 static void dapm_set_path_status(struct snd_soc_dapm_widget *w,
337 struct snd_soc_dapm_path *p, int i)
340 case snd_soc_dapm_switch:
341 case snd_soc_dapm_mixer:
342 case snd_soc_dapm_mixer_named_ctl: {
344 struct soc_mixer_control *mc = (struct soc_mixer_control *)
345 w->kcontrol_news[i].private_value;
346 unsigned int reg = mc->reg;
347 unsigned int shift = mc->shift;
349 unsigned int mask = (1 << fls(max)) - 1;
350 unsigned int invert = mc->invert;
352 val = soc_widget_read(w, reg);
353 val = (val >> shift) & mask;
360 case snd_soc_dapm_mux: {
361 struct soc_enum *e = (struct soc_enum *)
362 w->kcontrol_news[i].private_value;
365 val = soc_widget_read(w, e->reg);
366 item = (val >> e->shift_l) & e->mask;
369 for (i = 0; i < e->max; i++) {
370 if (!(strcmp(p->name, e->texts[i])) && item == i)
375 case snd_soc_dapm_virt_mux: {
376 struct soc_enum *e = (struct soc_enum *)
377 w->kcontrol_news[i].private_value;
380 /* since a virtual mux has no backing registers to
381 * decide which path to connect, it will try to match
382 * with the first enumeration. This is to ensure
383 * that the default mux choice (the first) will be
384 * correctly powered up during initialization.
386 if (!strcmp(p->name, e->texts[0]))
390 case snd_soc_dapm_value_mux: {
391 struct soc_enum *e = (struct soc_enum *)
392 w->kcontrol_news[i].private_value;
395 val = soc_widget_read(w, e->reg);
396 val = (val >> e->shift_l) & e->mask;
397 for (item = 0; item < e->max; item++) {
398 if (val == e->values[item])
403 for (i = 0; i < e->max; i++) {
404 if (!(strcmp(p->name, e->texts[i])) && item == i)
409 /* does not affect routing - always connected */
410 case snd_soc_dapm_pga:
411 case snd_soc_dapm_out_drv:
412 case snd_soc_dapm_output:
413 case snd_soc_dapm_adc:
414 case snd_soc_dapm_input:
415 case snd_soc_dapm_siggen:
416 case snd_soc_dapm_dac:
417 case snd_soc_dapm_micbias:
418 case snd_soc_dapm_vmid:
419 case snd_soc_dapm_supply:
420 case snd_soc_dapm_regulator_supply:
421 case snd_soc_dapm_clock_supply:
422 case snd_soc_dapm_aif_in:
423 case snd_soc_dapm_aif_out:
424 case snd_soc_dapm_dai:
425 case snd_soc_dapm_hp:
426 case snd_soc_dapm_mic:
427 case snd_soc_dapm_spk:
428 case snd_soc_dapm_line:
429 case snd_soc_dapm_dai_link:
432 /* does affect routing - dynamically connected */
433 case snd_soc_dapm_pre:
434 case snd_soc_dapm_post:
440 /* connect mux widget to its interconnecting audio paths */
441 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
442 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
443 struct snd_soc_dapm_path *path, const char *control_name,
444 const struct snd_kcontrol_new *kcontrol)
446 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
449 for (i = 0; i < e->max; i++) {
450 if (!(strcmp(control_name, e->texts[i]))) {
451 list_add(&path->list, &dapm->card->paths);
452 list_add(&path->list_sink, &dest->sources);
453 list_add(&path->list_source, &src->sinks);
454 path->name = (char*)e->texts[i];
455 dapm_set_path_status(dest, path, 0);
463 /* connect mixer widget to its interconnecting audio paths */
464 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
465 struct snd_soc_dapm_widget *src, struct snd_soc_dapm_widget *dest,
466 struct snd_soc_dapm_path *path, const char *control_name)
470 /* search for mixer kcontrol */
471 for (i = 0; i < dest->num_kcontrols; i++) {
472 if (!strcmp(control_name, dest->kcontrol_news[i].name)) {
473 list_add(&path->list, &dapm->card->paths);
474 list_add(&path->list_sink, &dest->sources);
475 list_add(&path->list_source, &src->sinks);
476 path->name = dest->kcontrol_news[i].name;
477 dapm_set_path_status(dest, path, i);
484 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
485 struct snd_soc_dapm_widget *kcontrolw,
486 const struct snd_kcontrol_new *kcontrol_new,
487 struct snd_kcontrol **kcontrol)
489 struct snd_soc_dapm_widget *w;
494 list_for_each_entry(w, &dapm->card->widgets, list) {
495 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
497 for (i = 0; i < w->num_kcontrols; i++) {
498 if (&w->kcontrol_news[i] == kcontrol_new) {
500 *kcontrol = w->kcontrols[i];
510 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
511 * create it. Either way, add the widget into the control's widget list
513 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
514 int kci, struct snd_soc_dapm_path *path)
516 struct snd_soc_dapm_context *dapm = w->dapm;
517 struct snd_card *card = dapm->card->snd_card;
521 struct snd_kcontrol *kcontrol;
522 struct snd_soc_dapm_widget_list *wlist;
525 bool wname_in_long_name, kcname_in_long_name;
532 prefix = dapm->codec->name_prefix;
537 prefix_len = strlen(prefix) + 1;
541 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
545 wlist = kcontrol->private_data;
546 wlistentries = wlist->num_widgets + 1;
552 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
553 wlistentries * sizeof(struct snd_soc_dapm_widget *);
554 wlist = krealloc(wlist, wlistsize, GFP_KERNEL);
556 dev_err(dapm->dev, "ASoC: can't allocate widget list for %s\n",
560 wlist->num_widgets = wlistentries;
561 wlist->widgets[wlistentries - 1] = w;
565 wname_in_long_name = false;
566 kcname_in_long_name = true;
569 case snd_soc_dapm_switch:
570 case snd_soc_dapm_mixer:
571 wname_in_long_name = true;
572 kcname_in_long_name = true;
574 case snd_soc_dapm_mixer_named_ctl:
575 wname_in_long_name = false;
576 kcname_in_long_name = true;
578 case snd_soc_dapm_mux:
579 case snd_soc_dapm_virt_mux:
580 case snd_soc_dapm_value_mux:
581 wname_in_long_name = true;
582 kcname_in_long_name = false;
590 if (wname_in_long_name && kcname_in_long_name) {
591 name_len = strlen(w->name) - prefix_len + 1 +
592 strlen(w->kcontrol_news[kci].name) + 1;
594 long_name = kmalloc(name_len, GFP_KERNEL);
595 if (long_name == NULL) {
601 * The control will get a prefix from the control
602 * creation process but we're also using the same
603 * prefix for widgets so cut the prefix off the
604 * front of the widget name.
606 snprintf(long_name, name_len, "%s %s",
607 w->name + prefix_len,
608 w->kcontrol_news[kci].name);
609 long_name[name_len - 1] = '\0';
612 } else if (wname_in_long_name) {
614 name = w->name + prefix_len;
617 name = w->kcontrol_news[kci].name;
620 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], wlist, name,
622 ret = snd_ctl_add(card, kcontrol);
625 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
632 path->long_name = long_name;
635 kcontrol->private_data = wlist;
636 w->kcontrols[kci] = kcontrol;
637 path->kcontrol = kcontrol;
642 /* create new dapm mixer control */
643 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
646 struct snd_soc_dapm_path *path;
649 for (i = 0; i < w->num_kcontrols; i++) {
651 list_for_each_entry(path, &w->sources, list_sink) {
652 /* mixer/mux paths name must match control name */
653 if (path->name != (char *)w->kcontrol_news[i].name)
656 if (w->kcontrols[i]) {
657 path->kcontrol = w->kcontrols[i];
661 ret = dapm_create_or_share_mixmux_kcontrol(w, i, path);
670 /* create new dapm mux control */
671 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
673 struct snd_soc_dapm_context *dapm = w->dapm;
674 struct snd_soc_dapm_path *path;
677 if (w->num_kcontrols != 1) {
679 "ASoC: mux %s has incorrect number of controls\n",
684 path = list_first_entry(&w->sources, struct snd_soc_dapm_path,
687 dev_err(dapm->dev, "ASoC: mux %s has no paths\n", w->name);
691 ret = dapm_create_or_share_mixmux_kcontrol(w, 0, path);
695 list_for_each_entry(path, &w->sources, list_sink)
696 path->kcontrol = w->kcontrols[0];
701 /* create new dapm volume control */
702 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
704 if (w->num_kcontrols)
705 dev_err(w->dapm->dev,
706 "ASoC: PGA controls not supported: '%s'\n", w->name);
711 /* reset 'walked' bit for each dapm path */
712 static void dapm_clear_walk_output(struct snd_soc_dapm_context *dapm,
713 struct list_head *sink)
715 struct snd_soc_dapm_path *p;
717 list_for_each_entry(p, sink, list_source) {
720 dapm_clear_walk_output(dapm, &p->sink->sinks);
725 static void dapm_clear_walk_input(struct snd_soc_dapm_context *dapm,
726 struct list_head *source)
728 struct snd_soc_dapm_path *p;
730 list_for_each_entry(p, source, list_sink) {
733 dapm_clear_walk_input(dapm, &p->source->sources);
739 /* We implement power down on suspend by checking the power state of
740 * the ALSA card - when we are suspending the ALSA state for the card
743 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
745 int level = snd_power_get_state(widget->dapm->card->snd_card);
748 case SNDRV_CTL_POWER_D3hot:
749 case SNDRV_CTL_POWER_D3cold:
750 if (widget->ignore_suspend)
751 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
753 return widget->ignore_suspend;
759 /* add widget to list if it's not already in the list */
760 static int dapm_list_add_widget(struct snd_soc_dapm_widget_list **list,
761 struct snd_soc_dapm_widget *w)
763 struct snd_soc_dapm_widget_list *wlist;
764 int wlistsize, wlistentries, i;
771 /* is this widget already in the list */
772 for (i = 0; i < wlist->num_widgets; i++) {
773 if (wlist->widgets[i] == w)
777 /* allocate some new space */
778 wlistentries = wlist->num_widgets + 1;
779 wlistsize = sizeof(struct snd_soc_dapm_widget_list) +
780 wlistentries * sizeof(struct snd_soc_dapm_widget *);
781 *list = krealloc(wlist, wlistsize, GFP_KERNEL);
783 dev_err(w->dapm->dev, "ASoC: can't allocate widget list for %s\n",
789 /* insert the widget */
790 dev_dbg(w->dapm->dev, "ASoC: added %s in widget list pos %d\n",
791 w->name, wlist->num_widgets);
793 wlist->widgets[wlist->num_widgets] = w;
794 wlist->num_widgets++;
799 * Recursively check for a completed path to an active or physically connected
800 * output widget. Returns number of complete paths.
802 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
803 struct snd_soc_dapm_widget_list **list)
805 struct snd_soc_dapm_path *path;
808 if (widget->outputs >= 0)
809 return widget->outputs;
811 DAPM_UPDATE_STAT(widget, path_checks);
813 switch (widget->id) {
814 case snd_soc_dapm_supply:
815 case snd_soc_dapm_regulator_supply:
816 case snd_soc_dapm_clock_supply:
822 switch (widget->id) {
823 case snd_soc_dapm_adc:
824 case snd_soc_dapm_aif_out:
825 case snd_soc_dapm_dai:
826 if (widget->active) {
827 widget->outputs = snd_soc_dapm_suspend_check(widget);
828 return widget->outputs;
834 if (widget->connected) {
835 /* connected pin ? */
836 if (widget->id == snd_soc_dapm_output && !widget->ext) {
837 widget->outputs = snd_soc_dapm_suspend_check(widget);
838 return widget->outputs;
841 /* connected jack or spk ? */
842 if (widget->id == snd_soc_dapm_hp ||
843 widget->id == snd_soc_dapm_spk ||
844 (widget->id == snd_soc_dapm_line &&
845 !list_empty(&widget->sources))) {
846 widget->outputs = snd_soc_dapm_suspend_check(widget);
847 return widget->outputs;
851 list_for_each_entry(path, &widget->sinks, list_source) {
852 DAPM_UPDATE_STAT(widget, neighbour_checks);
863 trace_snd_soc_dapm_output_path(widget, path);
865 if (path->sink && path->connect) {
869 /* do we need to add this widget to the list ? */
872 err = dapm_list_add_widget(list, path->sink);
874 dev_err(widget->dapm->dev,
875 "ASoC: could not add widget %s\n",
882 con += is_connected_output_ep(path->sink, list);
888 widget->outputs = con;
894 * Recursively check for a completed path to an active or physically connected
895 * input widget. Returns number of complete paths.
897 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
898 struct snd_soc_dapm_widget_list **list)
900 struct snd_soc_dapm_path *path;
903 if (widget->inputs >= 0)
904 return widget->inputs;
906 DAPM_UPDATE_STAT(widget, path_checks);
908 switch (widget->id) {
909 case snd_soc_dapm_supply:
910 case snd_soc_dapm_regulator_supply:
911 case snd_soc_dapm_clock_supply:
917 /* active stream ? */
918 switch (widget->id) {
919 case snd_soc_dapm_dac:
920 case snd_soc_dapm_aif_in:
921 case snd_soc_dapm_dai:
922 if (widget->active) {
923 widget->inputs = snd_soc_dapm_suspend_check(widget);
924 return widget->inputs;
930 if (widget->connected) {
931 /* connected pin ? */
932 if (widget->id == snd_soc_dapm_input && !widget->ext) {
933 widget->inputs = snd_soc_dapm_suspend_check(widget);
934 return widget->inputs;
937 /* connected VMID/Bias for lower pops */
938 if (widget->id == snd_soc_dapm_vmid) {
939 widget->inputs = snd_soc_dapm_suspend_check(widget);
940 return widget->inputs;
943 /* connected jack ? */
944 if (widget->id == snd_soc_dapm_mic ||
945 (widget->id == snd_soc_dapm_line &&
946 !list_empty(&widget->sinks))) {
947 widget->inputs = snd_soc_dapm_suspend_check(widget);
948 return widget->inputs;
951 /* signal generator */
952 if (widget->id == snd_soc_dapm_siggen) {
953 widget->inputs = snd_soc_dapm_suspend_check(widget);
954 return widget->inputs;
958 list_for_each_entry(path, &widget->sources, list_sink) {
959 DAPM_UPDATE_STAT(widget, neighbour_checks);
970 trace_snd_soc_dapm_input_path(widget, path);
972 if (path->source && path->connect) {
976 /* do we need to add this widget to the list ? */
979 err = dapm_list_add_widget(list, path->source);
981 dev_err(widget->dapm->dev,
982 "ASoC: could not add widget %s\n",
989 con += is_connected_input_ep(path->source, list);
995 widget->inputs = con;
1001 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1002 * @dai: the soc DAI.
1003 * @stream: stream direction.
1004 * @list: list of active widgets for this stream.
1006 * Queries DAPM graph as to whether an valid audio stream path exists for
1007 * the initial stream specified by name. This takes into account
1008 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1010 * Returns the number of valid paths or negative error.
1012 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1013 struct snd_soc_dapm_widget_list **list)
1015 struct snd_soc_card *card = dai->card;
1018 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1021 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1022 paths = is_connected_output_ep(dai->playback_widget, list);
1023 dapm_clear_walk_output(&card->dapm,
1024 &dai->playback_widget->sinks);
1026 paths = is_connected_input_ep(dai->capture_widget, list);
1027 dapm_clear_walk_input(&card->dapm,
1028 &dai->capture_widget->sources);
1031 trace_snd_soc_dapm_connected(paths, stream);
1032 mutex_unlock(&card->dapm_mutex);
1038 * Handler for generic register modifier widget.
1040 int dapm_reg_event(struct snd_soc_dapm_widget *w,
1041 struct snd_kcontrol *kcontrol, int event)
1045 if (SND_SOC_DAPM_EVENT_ON(event))
1050 soc_widget_update_bits_locked(w, -(w->reg + 1),
1051 w->mask << w->shift, val << w->shift);
1055 EXPORT_SYMBOL_GPL(dapm_reg_event);
1058 * Handler for regulator supply widget.
1060 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1061 struct snd_kcontrol *kcontrol, int event)
1065 if (SND_SOC_DAPM_EVENT_ON(event)) {
1066 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
1067 ret = regulator_allow_bypass(w->regulator, false);
1069 dev_warn(w->dapm->dev,
1070 "ASoC: Failed to bypass %s: %d\n",
1074 return regulator_enable(w->regulator);
1076 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
1077 ret = regulator_allow_bypass(w->regulator, true);
1079 dev_warn(w->dapm->dev,
1080 "ASoC: Failed to unbypass %s: %d\n",
1084 return regulator_disable_deferred(w->regulator, w->shift);
1087 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1090 * Handler for clock supply widget.
1092 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1093 struct snd_kcontrol *kcontrol, int event)
1098 #ifdef CONFIG_HAVE_CLK
1099 if (SND_SOC_DAPM_EVENT_ON(event)) {
1100 return clk_prepare_enable(w->clk);
1102 clk_disable_unprepare(w->clk);
1108 EXPORT_SYMBOL_GPL(dapm_clock_event);
1110 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1112 if (w->power_checked)
1113 return w->new_power;
1118 w->new_power = w->power_check(w);
1120 w->power_checked = true;
1122 return w->new_power;
1125 /* Generic check to see if a widget should be powered.
1127 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1131 DAPM_UPDATE_STAT(w, power_checks);
1133 in = is_connected_input_ep(w, NULL);
1134 dapm_clear_walk_input(w->dapm, &w->sources);
1135 out = is_connected_output_ep(w, NULL);
1136 dapm_clear_walk_output(w->dapm, &w->sinks);
1137 return out != 0 && in != 0;
1140 static int dapm_dai_check_power(struct snd_soc_dapm_widget *w)
1142 DAPM_UPDATE_STAT(w, power_checks);
1147 return dapm_generic_check_power(w);
1150 /* Check to see if an ADC has power */
1151 static int dapm_adc_check_power(struct snd_soc_dapm_widget *w)
1155 DAPM_UPDATE_STAT(w, power_checks);
1158 in = is_connected_input_ep(w, NULL);
1159 dapm_clear_walk_input(w->dapm, &w->sources);
1162 return dapm_generic_check_power(w);
1166 /* Check to see if a DAC has power */
1167 static int dapm_dac_check_power(struct snd_soc_dapm_widget *w)
1171 DAPM_UPDATE_STAT(w, power_checks);
1174 out = is_connected_output_ep(w, NULL);
1175 dapm_clear_walk_output(w->dapm, &w->sinks);
1178 return dapm_generic_check_power(w);
1182 /* Check to see if a power supply is needed */
1183 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1185 struct snd_soc_dapm_path *path;
1187 DAPM_UPDATE_STAT(w, power_checks);
1189 /* Check if one of our outputs is connected */
1190 list_for_each_entry(path, &w->sinks, list_source) {
1191 DAPM_UPDATE_STAT(w, neighbour_checks);
1196 if (path->connected &&
1197 !path->connected(path->source, path->sink))
1203 if (dapm_widget_power_check(path->sink))
1210 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1215 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1216 struct snd_soc_dapm_widget *b,
1224 sort = dapm_down_seq;
1226 if (sort[a->id] != sort[b->id])
1227 return sort[a->id] - sort[b->id];
1228 if (a->subseq != b->subseq) {
1230 return a->subseq - b->subseq;
1232 return b->subseq - a->subseq;
1234 if (a->reg != b->reg)
1235 return a->reg - b->reg;
1236 if (a->dapm != b->dapm)
1237 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1242 /* Insert a widget in order into a DAPM power sequence. */
1243 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1244 struct list_head *list,
1247 struct snd_soc_dapm_widget *w;
1249 list_for_each_entry(w, list, power_list)
1250 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1251 list_add_tail(&new_widget->power_list, &w->power_list);
1255 list_add_tail(&new_widget->power_list, list);
1258 static void dapm_seq_check_event(struct snd_soc_dapm_context *dapm,
1259 struct snd_soc_dapm_widget *w, int event)
1261 struct snd_soc_card *card = dapm->card;
1262 const char *ev_name;
1266 case SND_SOC_DAPM_PRE_PMU:
1267 ev_name = "PRE_PMU";
1270 case SND_SOC_DAPM_POST_PMU:
1271 ev_name = "POST_PMU";
1274 case SND_SOC_DAPM_PRE_PMD:
1275 ev_name = "PRE_PMD";
1278 case SND_SOC_DAPM_POST_PMD:
1279 ev_name = "POST_PMD";
1287 if (w->power != power)
1290 if (w->event && (w->event_flags & event)) {
1291 pop_dbg(dapm->dev, card->pop_time, "pop test : %s %s\n",
1293 trace_snd_soc_dapm_widget_event_start(w, event);
1294 ret = w->event(w, NULL, event);
1295 trace_snd_soc_dapm_widget_event_done(w, event);
1297 dev_err(dapm->dev, "ASoC: %s: %s event failed: %d\n",
1298 ev_name, w->name, ret);
1302 /* Apply the coalesced changes from a DAPM sequence */
1303 static void dapm_seq_run_coalesced(struct snd_soc_dapm_context *dapm,
1304 struct list_head *pending)
1306 struct snd_soc_card *card = dapm->card;
1307 struct snd_soc_dapm_widget *w;
1309 unsigned int value = 0;
1310 unsigned int mask = 0;
1311 unsigned int cur_mask;
1313 reg = list_first_entry(pending, struct snd_soc_dapm_widget,
1316 list_for_each_entry(w, pending, power_list) {
1317 cur_mask = 1 << w->shift;
1318 BUG_ON(reg != w->reg);
1329 pop_dbg(dapm->dev, card->pop_time,
1330 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1331 w->name, reg, value, mask);
1333 /* Check for events */
1334 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMU);
1335 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_PRE_PMD);
1339 /* Any widget will do, they should all be updating the
1342 w = list_first_entry(pending, struct snd_soc_dapm_widget,
1345 pop_dbg(dapm->dev, card->pop_time,
1346 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1347 value, mask, reg, card->pop_time);
1348 pop_wait(card->pop_time);
1349 soc_widget_update_bits_locked(w, reg, mask, value);
1352 list_for_each_entry(w, pending, power_list) {
1353 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMU);
1354 dapm_seq_check_event(dapm, w, SND_SOC_DAPM_POST_PMD);
1358 /* Apply a DAPM power sequence.
1360 * We walk over a pre-sorted list of widgets to apply power to. In
1361 * order to minimise the number of writes to the device required
1362 * multiple widgets will be updated in a single write where possible.
1363 * Currently anything that requires more than a single write is not
1366 static void dapm_seq_run(struct snd_soc_dapm_context *dapm,
1367 struct list_head *list, int event, bool power_up)
1369 struct snd_soc_dapm_widget *w, *n;
1372 int cur_subseq = -1;
1373 int cur_reg = SND_SOC_NOPM;
1374 struct snd_soc_dapm_context *cur_dapm = NULL;
1381 sort = dapm_down_seq;
1383 list_for_each_entry_safe(w, n, list, power_list) {
1386 /* Do we need to apply any queued changes? */
1387 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1388 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1389 if (!list_empty(&pending))
1390 dapm_seq_run_coalesced(cur_dapm, &pending);
1392 if (cur_dapm && cur_dapm->seq_notifier) {
1393 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1394 if (sort[i] == cur_sort)
1395 cur_dapm->seq_notifier(cur_dapm,
1400 INIT_LIST_HEAD(&pending);
1402 cur_subseq = INT_MIN;
1403 cur_reg = SND_SOC_NOPM;
1408 case snd_soc_dapm_pre:
1410 list_for_each_entry_safe_continue(w, n, list,
1413 if (event == SND_SOC_DAPM_STREAM_START)
1415 NULL, SND_SOC_DAPM_PRE_PMU);
1416 else if (event == SND_SOC_DAPM_STREAM_STOP)
1418 NULL, SND_SOC_DAPM_PRE_PMD);
1421 case snd_soc_dapm_post:
1423 list_for_each_entry_safe_continue(w, n, list,
1426 if (event == SND_SOC_DAPM_STREAM_START)
1428 NULL, SND_SOC_DAPM_POST_PMU);
1429 else if (event == SND_SOC_DAPM_STREAM_STOP)
1431 NULL, SND_SOC_DAPM_POST_PMD);
1435 /* Queue it up for application */
1436 cur_sort = sort[w->id];
1437 cur_subseq = w->subseq;
1440 list_move(&w->power_list, &pending);
1445 dev_err(w->dapm->dev,
1446 "ASoC: Failed to apply widget power: %d\n", ret);
1449 if (!list_empty(&pending))
1450 dapm_seq_run_coalesced(cur_dapm, &pending);
1452 if (cur_dapm && cur_dapm->seq_notifier) {
1453 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1454 if (sort[i] == cur_sort)
1455 cur_dapm->seq_notifier(cur_dapm,
1460 static void dapm_widget_update(struct snd_soc_dapm_context *dapm)
1462 struct snd_soc_dapm_update *update = dapm->update;
1463 struct snd_soc_dapm_widget *w;
1472 (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1473 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1475 dev_err(dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1479 ret = soc_widget_update_bits_locked(w, update->reg, update->mask,
1482 dev_err(dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1486 (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1487 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1489 dev_err(dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1494 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1495 * they're changing state.
1497 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1499 struct snd_soc_dapm_context *d = data;
1502 /* If we're off and we're not supposed to be go into STANDBY */
1503 if (d->bias_level == SND_SOC_BIAS_OFF &&
1504 d->target_bias_level != SND_SOC_BIAS_OFF) {
1506 pm_runtime_get_sync(d->dev);
1508 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1511 "ASoC: Failed to turn on bias: %d\n", ret);
1514 /* Prepare for a STADDBY->ON or ON->STANDBY transition */
1515 if (d->bias_level != d->target_bias_level) {
1516 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1519 "ASoC: Failed to prepare bias: %d\n", ret);
1523 /* Async callback run prior to DAPM sequences - brings to their final
1526 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1528 struct snd_soc_dapm_context *d = data;
1531 /* If we just powered the last thing off drop to standby bias */
1532 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1533 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1534 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1535 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1537 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1541 /* If we're in standby and can support bias off then do that */
1542 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1543 d->target_bias_level == SND_SOC_BIAS_OFF) {
1544 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1546 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1550 pm_runtime_put(d->dev);
1553 /* If we just powered up then move to active bias */
1554 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1555 d->target_bias_level == SND_SOC_BIAS_ON) {
1556 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1558 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1563 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1564 bool power, bool connect)
1566 /* If a connection is being made or broken then that update
1567 * will have marked the peer dirty, otherwise the widgets are
1568 * not connected and this update has no impact. */
1572 /* If the peer is already in the state we're moving to then we
1573 * won't have an impact on it. */
1574 if (power != peer->power)
1575 dapm_mark_dirty(peer, "peer state change");
1578 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1579 struct list_head *up_list,
1580 struct list_head *down_list)
1582 struct snd_soc_dapm_path *path;
1584 if (w->power == power)
1587 trace_snd_soc_dapm_widget_power(w, power);
1589 /* If we changed our power state perhaps our neigbours changed
1592 list_for_each_entry(path, &w->sources, list_sink) {
1594 dapm_widget_set_peer_power(path->source, power,
1599 case snd_soc_dapm_supply:
1600 case snd_soc_dapm_regulator_supply:
1601 case snd_soc_dapm_clock_supply:
1602 /* Supplies can't affect their outputs, only their inputs */
1605 list_for_each_entry(path, &w->sinks, list_source) {
1607 dapm_widget_set_peer_power(path->sink, power,
1615 dapm_seq_insert(w, up_list, true);
1617 dapm_seq_insert(w, down_list, false);
1622 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1623 struct list_head *up_list,
1624 struct list_head *down_list)
1629 case snd_soc_dapm_pre:
1630 dapm_seq_insert(w, down_list, false);
1632 case snd_soc_dapm_post:
1633 dapm_seq_insert(w, up_list, true);
1637 power = dapm_widget_power_check(w);
1639 dapm_widget_set_power(w, power, up_list, down_list);
1645 * Scan each dapm widget for complete audio path.
1646 * A complete path is a route that has valid endpoints i.e.:-
1648 * o DAC to output pin.
1649 * o Input Pin to ADC.
1650 * o Input pin to Output pin (bypass, sidetone)
1651 * o DAC to ADC (loopback).
1653 static int dapm_power_widgets(struct snd_soc_dapm_context *dapm, int event)
1655 struct snd_soc_card *card = dapm->card;
1656 struct snd_soc_dapm_widget *w;
1657 struct snd_soc_dapm_context *d;
1659 LIST_HEAD(down_list);
1660 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1661 enum snd_soc_bias_level bias;
1663 trace_snd_soc_dapm_start(card);
1665 list_for_each_entry(d, &card->dapm_list, list) {
1666 if (d->idle_bias_off)
1667 d->target_bias_level = SND_SOC_BIAS_OFF;
1669 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1674 /* Check which widgets we need to power and store them in
1675 * lists indicating if they should be powered up or down. We
1676 * only check widgets that have been flagged as dirty but note
1677 * that new widgets may be added to the dirty list while we
1680 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1681 dapm_power_one_widget(w, &up_list, &down_list);
1684 list_for_each_entry(w, &card->widgets, list) {
1686 case snd_soc_dapm_pre:
1687 case snd_soc_dapm_post:
1688 /* These widgets always need to be powered */
1691 list_del_init(&w->dirty);
1698 /* Supplies and micbiases only bring the
1699 * context up to STANDBY as unless something
1700 * else is active and passing audio they
1701 * generally don't require full power. Signal
1702 * generators are virtual pins and have no
1703 * power impact themselves.
1706 case snd_soc_dapm_siggen:
1708 case snd_soc_dapm_supply:
1709 case snd_soc_dapm_regulator_supply:
1710 case snd_soc_dapm_clock_supply:
1711 case snd_soc_dapm_micbias:
1712 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1713 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1716 d->target_bias_level = SND_SOC_BIAS_ON;
1723 /* Force all contexts in the card to the same bias state if
1724 * they're not ground referenced.
1726 bias = SND_SOC_BIAS_OFF;
1727 list_for_each_entry(d, &card->dapm_list, list)
1728 if (d->target_bias_level > bias)
1729 bias = d->target_bias_level;
1730 list_for_each_entry(d, &card->dapm_list, list)
1731 if (!d->idle_bias_off)
1732 d->target_bias_level = bias;
1734 trace_snd_soc_dapm_walk_done(card);
1736 /* Run all the bias changes in parallel */
1737 list_for_each_entry(d, &dapm->card->dapm_list, list)
1738 async_schedule_domain(dapm_pre_sequence_async, d,
1740 async_synchronize_full_domain(&async_domain);
1742 /* Power down widgets first; try to avoid amplifying pops. */
1743 dapm_seq_run(dapm, &down_list, event, false);
1745 dapm_widget_update(dapm);
1748 dapm_seq_run(dapm, &up_list, event, true);
1750 /* Run all the bias changes in parallel */
1751 list_for_each_entry(d, &dapm->card->dapm_list, list)
1752 async_schedule_domain(dapm_post_sequence_async, d,
1754 async_synchronize_full_domain(&async_domain);
1756 /* do we need to notify any clients that DAPM event is complete */
1757 list_for_each_entry(d, &card->dapm_list, list) {
1758 if (d->stream_event)
1759 d->stream_event(d, event);
1762 pop_dbg(dapm->dev, card->pop_time,
1763 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1764 pop_wait(card->pop_time);
1766 trace_snd_soc_dapm_done(card);
1771 #ifdef CONFIG_DEBUG_FS
1772 static ssize_t dapm_widget_power_read_file(struct file *file,
1773 char __user *user_buf,
1774 size_t count, loff_t *ppos)
1776 struct snd_soc_dapm_widget *w = file->private_data;
1780 struct snd_soc_dapm_path *p = NULL;
1782 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1786 in = is_connected_input_ep(w, NULL);
1787 dapm_clear_walk_input(w->dapm, &w->sources);
1788 out = is_connected_output_ep(w, NULL);
1789 dapm_clear_walk_output(w->dapm, &w->sinks);
1791 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1792 w->name, w->power ? "On" : "Off",
1793 w->force ? " (forced)" : "", in, out);
1796 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1797 " - R%d(0x%x) bit %d",
1798 w->reg, w->reg, w->shift);
1800 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1803 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1805 w->active ? "active" : "inactive");
1807 list_for_each_entry(p, &w->sources, list_sink) {
1808 if (p->connected && !p->connected(w, p->sink))
1812 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1813 " in \"%s\" \"%s\"\n",
1814 p->name ? p->name : "static",
1817 list_for_each_entry(p, &w->sinks, list_source) {
1818 if (p->connected && !p->connected(w, p->sink))
1822 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1823 " out \"%s\" \"%s\"\n",
1824 p->name ? p->name : "static",
1828 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1834 static const struct file_operations dapm_widget_power_fops = {
1835 .open = simple_open,
1836 .read = dapm_widget_power_read_file,
1837 .llseek = default_llseek,
1840 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1841 size_t count, loff_t *ppos)
1843 struct snd_soc_dapm_context *dapm = file->private_data;
1846 switch (dapm->bias_level) {
1847 case SND_SOC_BIAS_ON:
1850 case SND_SOC_BIAS_PREPARE:
1851 level = "Prepare\n";
1853 case SND_SOC_BIAS_STANDBY:
1854 level = "Standby\n";
1856 case SND_SOC_BIAS_OFF:
1861 level = "Unknown\n";
1865 return simple_read_from_buffer(user_buf, count, ppos, level,
1869 static const struct file_operations dapm_bias_fops = {
1870 .open = simple_open,
1871 .read = dapm_bias_read_file,
1872 .llseek = default_llseek,
1875 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1876 struct dentry *parent)
1880 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
1882 if (!dapm->debugfs_dapm) {
1884 "ASoC: Failed to create DAPM debugfs directory\n");
1888 d = debugfs_create_file("bias_level", 0444,
1889 dapm->debugfs_dapm, dapm,
1893 "ASoC: Failed to create bias level debugfs file\n");
1896 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1898 struct snd_soc_dapm_context *dapm = w->dapm;
1901 if (!dapm->debugfs_dapm || !w->name)
1904 d = debugfs_create_file(w->name, 0444,
1905 dapm->debugfs_dapm, w,
1906 &dapm_widget_power_fops);
1908 dev_warn(w->dapm->dev,
1909 "ASoC: Failed to create %s debugfs file\n",
1913 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1915 debugfs_remove_recursive(dapm->debugfs_dapm);
1919 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
1920 struct dentry *parent)
1924 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
1928 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
1934 /* test and update the power status of a mux widget */
1935 static int soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
1936 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
1938 struct snd_soc_dapm_path *path;
1941 if (widget->id != snd_soc_dapm_mux &&
1942 widget->id != snd_soc_dapm_virt_mux &&
1943 widget->id != snd_soc_dapm_value_mux)
1946 /* find dapm widget path assoc with kcontrol */
1947 list_for_each_entry(path, &widget->dapm->card->paths, list) {
1948 if (path->kcontrol != kcontrol)
1951 if (!path->name || !e->texts[mux])
1955 /* we now need to match the string in the enum to the path */
1956 if (!(strcmp(path->name, e->texts[mux]))) {
1957 path->connect = 1; /* new connection */
1958 dapm_mark_dirty(path->source, "mux connection");
1961 dapm_mark_dirty(path->source,
1962 "mux disconnection");
1963 path->connect = 0; /* old connection must be powered down */
1968 dapm_mark_dirty(widget, "mux change");
1969 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
1975 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_widget *widget,
1976 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
1978 struct snd_soc_card *card = widget->dapm->card;
1981 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1982 ret = soc_dapm_mux_update_power(widget, kcontrol, mux, e);
1983 mutex_unlock(&card->dapm_mutex);
1985 soc_dpcm_runtime_update(widget);
1988 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
1990 /* test and update the power status of a mixer or switch widget */
1991 static int soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
1992 struct snd_kcontrol *kcontrol, int connect)
1994 struct snd_soc_dapm_path *path;
1997 if (widget->id != snd_soc_dapm_mixer &&
1998 widget->id != snd_soc_dapm_mixer_named_ctl &&
1999 widget->id != snd_soc_dapm_switch)
2002 /* find dapm widget path assoc with kcontrol */
2003 list_for_each_entry(path, &widget->dapm->card->paths, list) {
2004 if (path->kcontrol != kcontrol)
2007 /* found, now check type */
2009 path->connect = connect;
2010 dapm_mark_dirty(path->source, "mixer connection");
2014 dapm_mark_dirty(widget, "mixer update");
2015 dapm_power_widgets(widget->dapm, SND_SOC_DAPM_STREAM_NOP);
2021 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_widget *widget,
2022 struct snd_kcontrol *kcontrol, int connect)
2024 struct snd_soc_card *card = widget->dapm->card;
2027 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2028 ret = soc_dapm_mixer_update_power(widget, kcontrol, connect);
2029 mutex_unlock(&card->dapm_mutex);
2031 soc_dpcm_runtime_update(widget);
2034 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2036 /* show dapm widget status in sys fs */
2037 static ssize_t dapm_widget_show(struct device *dev,
2038 struct device_attribute *attr, char *buf)
2040 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2041 struct snd_soc_codec *codec =rtd->codec;
2042 struct snd_soc_dapm_widget *w;
2044 char *state = "not set";
2046 list_for_each_entry(w, &codec->card->widgets, list) {
2047 if (w->dapm != &codec->dapm)
2050 /* only display widgets that burnm power */
2052 case snd_soc_dapm_hp:
2053 case snd_soc_dapm_mic:
2054 case snd_soc_dapm_spk:
2055 case snd_soc_dapm_line:
2056 case snd_soc_dapm_micbias:
2057 case snd_soc_dapm_dac:
2058 case snd_soc_dapm_adc:
2059 case snd_soc_dapm_pga:
2060 case snd_soc_dapm_out_drv:
2061 case snd_soc_dapm_mixer:
2062 case snd_soc_dapm_mixer_named_ctl:
2063 case snd_soc_dapm_supply:
2064 case snd_soc_dapm_regulator_supply:
2065 case snd_soc_dapm_clock_supply:
2067 count += sprintf(buf + count, "%s: %s\n",
2068 w->name, w->power ? "On":"Off");
2075 switch (codec->dapm.bias_level) {
2076 case SND_SOC_BIAS_ON:
2079 case SND_SOC_BIAS_PREPARE:
2082 case SND_SOC_BIAS_STANDBY:
2085 case SND_SOC_BIAS_OFF:
2089 count += sprintf(buf + count, "PM State: %s\n", state);
2094 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2096 int snd_soc_dapm_sys_add(struct device *dev)
2098 return device_create_file(dev, &dev_attr_dapm_widget);
2101 static void snd_soc_dapm_sys_remove(struct device *dev)
2103 device_remove_file(dev, &dev_attr_dapm_widget);
2106 /* free all dapm widgets and resources */
2107 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2109 struct snd_soc_dapm_widget *w, *next_w;
2110 struct snd_soc_dapm_path *p, *next_p;
2112 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2113 if (w->dapm != dapm)
2117 * remove source and sink paths associated to this widget.
2118 * While removing the path, remove reference to it from both
2119 * source and sink widgets so that path is removed only once.
2121 list_for_each_entry_safe(p, next_p, &w->sources, list_sink) {
2122 list_del(&p->list_sink);
2123 list_del(&p->list_source);
2125 kfree(p->long_name);
2128 list_for_each_entry_safe(p, next_p, &w->sinks, list_source) {
2129 list_del(&p->list_sink);
2130 list_del(&p->list_source);
2132 kfree(p->long_name);
2135 kfree(w->kcontrols);
2141 static struct snd_soc_dapm_widget *dapm_find_widget(
2142 struct snd_soc_dapm_context *dapm, const char *pin,
2143 bool search_other_contexts)
2145 struct snd_soc_dapm_widget *w;
2146 struct snd_soc_dapm_widget *fallback = NULL;
2148 list_for_each_entry(w, &dapm->card->widgets, list) {
2149 if (!strcmp(w->name, pin)) {
2150 if (w->dapm == dapm)
2157 if (search_other_contexts)
2163 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2164 const char *pin, int status)
2166 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2169 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2173 if (w->connected != status)
2174 dapm_mark_dirty(w, "pin configuration");
2176 w->connected = status;
2184 * snd_soc_dapm_sync - scan and power dapm paths
2185 * @dapm: DAPM context
2187 * Walks all dapm audio paths and powers widgets according to their
2188 * stream or path usage.
2190 * Returns 0 for success.
2192 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2197 * Suppress early reports (eg, jacks syncing their state) to avoid
2198 * silly DAPM runs during card startup.
2200 if (!dapm->card || !dapm->card->instantiated)
2203 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2204 ret = dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
2205 mutex_unlock(&dapm->card->dapm_mutex);
2208 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2210 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2211 const struct snd_soc_dapm_route *route)
2213 struct snd_soc_dapm_path *path;
2214 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2215 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2217 const char *control = route->control;
2219 char prefixed_sink[80];
2220 char prefixed_source[80];
2223 if (dapm->codec && dapm->codec->name_prefix) {
2224 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2225 dapm->codec->name_prefix, route->sink);
2226 sink = prefixed_sink;
2227 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2228 dapm->codec->name_prefix, route->source);
2229 source = prefixed_source;
2232 source = route->source;
2236 * find src and dest widgets over all widgets but favor a widget from
2237 * current DAPM context
2239 list_for_each_entry(w, &dapm->card->widgets, list) {
2240 if (!wsink && !(strcmp(w->name, sink))) {
2242 if (w->dapm == dapm)
2246 if (!wsource && !(strcmp(w->name, source))) {
2248 if (w->dapm == dapm)
2252 /* use widget from another DAPM context if not found from this */
2258 if (wsource == NULL) {
2259 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2263 if (wsink == NULL) {
2264 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2269 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2273 path->source = wsource;
2275 path->connected = route->connected;
2276 INIT_LIST_HEAD(&path->list);
2277 INIT_LIST_HEAD(&path->list_source);
2278 INIT_LIST_HEAD(&path->list_sink);
2280 /* check for external widgets */
2281 if (wsink->id == snd_soc_dapm_input) {
2282 if (wsource->id == snd_soc_dapm_micbias ||
2283 wsource->id == snd_soc_dapm_mic ||
2284 wsource->id == snd_soc_dapm_line ||
2285 wsource->id == snd_soc_dapm_output)
2288 if (wsource->id == snd_soc_dapm_output) {
2289 if (wsink->id == snd_soc_dapm_spk ||
2290 wsink->id == snd_soc_dapm_hp ||
2291 wsink->id == snd_soc_dapm_line ||
2292 wsink->id == snd_soc_dapm_input)
2296 /* connect static paths */
2297 if (control == NULL) {
2298 list_add(&path->list, &dapm->card->paths);
2299 list_add(&path->list_sink, &wsink->sources);
2300 list_add(&path->list_source, &wsource->sinks);
2305 /* connect dynamic paths */
2306 switch (wsink->id) {
2307 case snd_soc_dapm_adc:
2308 case snd_soc_dapm_dac:
2309 case snd_soc_dapm_pga:
2310 case snd_soc_dapm_out_drv:
2311 case snd_soc_dapm_input:
2312 case snd_soc_dapm_output:
2313 case snd_soc_dapm_siggen:
2314 case snd_soc_dapm_micbias:
2315 case snd_soc_dapm_vmid:
2316 case snd_soc_dapm_pre:
2317 case snd_soc_dapm_post:
2318 case snd_soc_dapm_supply:
2319 case snd_soc_dapm_regulator_supply:
2320 case snd_soc_dapm_clock_supply:
2321 case snd_soc_dapm_aif_in:
2322 case snd_soc_dapm_aif_out:
2323 case snd_soc_dapm_dai:
2324 case snd_soc_dapm_dai_link:
2325 list_add(&path->list, &dapm->card->paths);
2326 list_add(&path->list_sink, &wsink->sources);
2327 list_add(&path->list_source, &wsource->sinks);
2330 case snd_soc_dapm_mux:
2331 case snd_soc_dapm_virt_mux:
2332 case snd_soc_dapm_value_mux:
2333 ret = dapm_connect_mux(dapm, wsource, wsink, path, control,
2334 &wsink->kcontrol_news[0]);
2338 case snd_soc_dapm_switch:
2339 case snd_soc_dapm_mixer:
2340 case snd_soc_dapm_mixer_named_ctl:
2341 ret = dapm_connect_mixer(dapm, wsource, wsink, path, control);
2345 case snd_soc_dapm_hp:
2346 case snd_soc_dapm_mic:
2347 case snd_soc_dapm_line:
2348 case snd_soc_dapm_spk:
2349 list_add(&path->list, &dapm->card->paths);
2350 list_add(&path->list_sink, &wsink->sources);
2351 list_add(&path->list_source, &wsource->sinks);
2356 dapm_mark_dirty(wsource, "Route added");
2357 dapm_mark_dirty(wsink, "Route added");
2362 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2363 source, control, sink);
2368 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2369 const struct snd_soc_dapm_route *route)
2371 struct snd_soc_dapm_path *path, *p;
2374 char prefixed_sink[80];
2375 char prefixed_source[80];
2377 if (route->control) {
2379 "ASoC: Removal of routes with controls not supported\n");
2383 if (dapm->codec && dapm->codec->name_prefix) {
2384 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2385 dapm->codec->name_prefix, route->sink);
2386 sink = prefixed_sink;
2387 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2388 dapm->codec->name_prefix, route->source);
2389 source = prefixed_source;
2392 source = route->source;
2396 list_for_each_entry(p, &dapm->card->paths, list) {
2397 if (strcmp(p->source->name, source) != 0)
2399 if (strcmp(p->sink->name, sink) != 0)
2406 dapm_mark_dirty(path->source, "Route removed");
2407 dapm_mark_dirty(path->sink, "Route removed");
2409 list_del(&path->list);
2410 list_del(&path->list_sink);
2411 list_del(&path->list_source);
2414 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2422 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2423 * @dapm: DAPM context
2424 * @route: audio routes
2425 * @num: number of routes
2427 * Connects 2 dapm widgets together via a named audio path. The sink is
2428 * the widget receiving the audio signal, whilst the source is the sender
2429 * of the audio signal.
2431 * Returns 0 for success else error. On error all resources can be freed
2432 * with a call to snd_soc_card_free().
2434 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2435 const struct snd_soc_dapm_route *route, int num)
2439 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2440 for (i = 0; i < num; i++) {
2441 r = snd_soc_dapm_add_route(dapm, route);
2443 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2445 route->control ? route->control : "direct",
2451 mutex_unlock(&dapm->card->dapm_mutex);
2455 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2458 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2459 * @dapm: DAPM context
2460 * @route: audio routes
2461 * @num: number of routes
2463 * Removes routes from the DAPM context.
2465 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2466 const struct snd_soc_dapm_route *route, int num)
2470 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2471 for (i = 0; i < num; i++) {
2472 snd_soc_dapm_del_route(dapm, route);
2475 mutex_unlock(&dapm->card->dapm_mutex);
2479 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2481 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2482 const struct snd_soc_dapm_route *route)
2484 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2487 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2490 struct snd_soc_dapm_path *path;
2494 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2500 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2505 if (route->control || route->connected)
2506 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2507 route->source, route->sink);
2509 list_for_each_entry(path, &source->sinks, list_source) {
2510 if (path->sink == sink) {
2517 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2518 route->source, route->sink);
2520 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2521 count, route->source, route->sink);
2527 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2528 * @dapm: DAPM context
2529 * @route: audio routes
2530 * @num: number of routes
2532 * Mark existing routes matching those specified in the passed array
2533 * as being weak, meaning that they are ignored for the purpose of
2534 * power decisions. The main intended use case is for sidetone paths
2535 * which couple audio between other independent paths if they are both
2536 * active in order to make the combination work better at the user
2537 * level but which aren't intended to be "used".
2539 * Note that CODEC drivers should not use this as sidetone type paths
2540 * can frequently also be used as bypass paths.
2542 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2543 const struct snd_soc_dapm_route *route, int num)
2548 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2549 for (i = 0; i < num; i++) {
2550 err = snd_soc_dapm_weak_route(dapm, route);
2555 mutex_unlock(&dapm->card->dapm_mutex);
2559 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2562 * snd_soc_dapm_new_widgets - add new dapm widgets
2563 * @dapm: DAPM context
2565 * Checks the codec for any new dapm widgets and creates them if found.
2567 * Returns 0 for success.
2569 int snd_soc_dapm_new_widgets(struct snd_soc_dapm_context *dapm)
2571 struct snd_soc_dapm_widget *w;
2574 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2576 list_for_each_entry(w, &dapm->card->widgets, list)
2581 if (w->num_kcontrols) {
2582 w->kcontrols = kzalloc(w->num_kcontrols *
2583 sizeof(struct snd_kcontrol *),
2585 if (!w->kcontrols) {
2586 mutex_unlock(&dapm->card->dapm_mutex);
2592 case snd_soc_dapm_switch:
2593 case snd_soc_dapm_mixer:
2594 case snd_soc_dapm_mixer_named_ctl:
2597 case snd_soc_dapm_mux:
2598 case snd_soc_dapm_virt_mux:
2599 case snd_soc_dapm_value_mux:
2602 case snd_soc_dapm_pga:
2603 case snd_soc_dapm_out_drv:
2610 /* Read the initial power state from the device */
2612 val = soc_widget_read(w, w->reg);
2613 val &= 1 << w->shift;
2623 dapm_mark_dirty(w, "new widget");
2624 dapm_debugfs_add_widget(w);
2627 dapm_power_widgets(dapm, SND_SOC_DAPM_STREAM_NOP);
2628 mutex_unlock(&dapm->card->dapm_mutex);
2631 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2634 * snd_soc_dapm_get_volsw - dapm mixer get callback
2635 * @kcontrol: mixer control
2636 * @ucontrol: control element information
2638 * Callback to get the value of a dapm mixer control.
2640 * Returns 0 for success.
2642 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2643 struct snd_ctl_elem_value *ucontrol)
2645 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2646 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2647 struct soc_mixer_control *mc =
2648 (struct soc_mixer_control *)kcontrol->private_value;
2649 unsigned int reg = mc->reg;
2650 unsigned int shift = mc->shift;
2652 unsigned int mask = (1 << fls(max)) - 1;
2653 unsigned int invert = mc->invert;
2655 if (snd_soc_volsw_is_stereo(mc))
2656 dev_warn(widget->dapm->dev,
2657 "ASoC: Control '%s' is stereo, which is not supported\n",
2660 ucontrol->value.integer.value[0] =
2661 (snd_soc_read(widget->codec, reg) >> shift) & mask;
2663 ucontrol->value.integer.value[0] =
2664 max - ucontrol->value.integer.value[0];
2668 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2671 * snd_soc_dapm_put_volsw - dapm mixer set callback
2672 * @kcontrol: mixer control
2673 * @ucontrol: control element information
2675 * Callback to set the value of a dapm mixer control.
2677 * Returns 0 for success.
2679 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
2680 struct snd_ctl_elem_value *ucontrol)
2682 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2683 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2684 struct snd_soc_codec *codec = widget->codec;
2685 struct snd_soc_card *card = codec->card;
2686 struct soc_mixer_control *mc =
2687 (struct soc_mixer_control *)kcontrol->private_value;
2688 unsigned int reg = mc->reg;
2689 unsigned int shift = mc->shift;
2691 unsigned int mask = (1 << fls(max)) - 1;
2692 unsigned int invert = mc->invert;
2694 int connect, change;
2695 struct snd_soc_dapm_update update;
2698 if (snd_soc_volsw_is_stereo(mc))
2699 dev_warn(widget->dapm->dev,
2700 "ASoC: Control '%s' is stereo, which is not supported\n",
2703 val = (ucontrol->value.integer.value[0] & mask);
2708 mask = mask << shift;
2711 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2713 change = snd_soc_test_bits(widget->codec, reg, mask, val);
2715 for (wi = 0; wi < wlist->num_widgets; wi++) {
2716 widget = wlist->widgets[wi];
2718 widget->value = val;
2720 update.kcontrol = kcontrol;
2721 update.widget = widget;
2725 widget->dapm->update = &update;
2727 soc_dapm_mixer_update_power(widget, kcontrol, connect);
2729 widget->dapm->update = NULL;
2733 mutex_unlock(&card->dapm_mutex);
2736 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
2739 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
2740 * @kcontrol: mixer control
2741 * @ucontrol: control element information
2743 * Callback to get the value of a dapm enumerated double mixer control.
2745 * Returns 0 for success.
2747 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
2748 struct snd_ctl_elem_value *ucontrol)
2750 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2751 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2752 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2755 val = snd_soc_read(widget->codec, e->reg);
2756 ucontrol->value.enumerated.item[0] = (val >> e->shift_l) & e->mask;
2757 if (e->shift_l != e->shift_r)
2758 ucontrol->value.enumerated.item[1] =
2759 (val >> e->shift_r) & e->mask;
2763 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
2766 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
2767 * @kcontrol: mixer control
2768 * @ucontrol: control element information
2770 * Callback to set the value of a dapm enumerated double mixer control.
2772 * Returns 0 for success.
2774 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
2775 struct snd_ctl_elem_value *ucontrol)
2777 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2778 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2779 struct snd_soc_codec *codec = widget->codec;
2780 struct snd_soc_card *card = codec->card;
2781 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2782 unsigned int val, mux, change;
2784 struct snd_soc_dapm_update update;
2787 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2789 mux = ucontrol->value.enumerated.item[0];
2790 val = mux << e->shift_l;
2791 mask = e->mask << e->shift_l;
2792 if (e->shift_l != e->shift_r) {
2793 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2795 val |= ucontrol->value.enumerated.item[1] << e->shift_r;
2796 mask |= e->mask << e->shift_r;
2799 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2801 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
2803 for (wi = 0; wi < wlist->num_widgets; wi++) {
2804 widget = wlist->widgets[wi];
2806 widget->value = val;
2808 update.kcontrol = kcontrol;
2809 update.widget = widget;
2810 update.reg = e->reg;
2813 widget->dapm->update = &update;
2815 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
2817 widget->dapm->update = NULL;
2821 mutex_unlock(&card->dapm_mutex);
2824 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
2827 * snd_soc_dapm_get_enum_virt - Get virtual DAPM mux
2828 * @kcontrol: mixer control
2829 * @ucontrol: control element information
2831 * Returns 0 for success.
2833 int snd_soc_dapm_get_enum_virt(struct snd_kcontrol *kcontrol,
2834 struct snd_ctl_elem_value *ucontrol)
2836 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2837 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2839 ucontrol->value.enumerated.item[0] = widget->value;
2843 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_virt);
2846 * snd_soc_dapm_put_enum_virt - Set virtual DAPM mux
2847 * @kcontrol: mixer control
2848 * @ucontrol: control element information
2850 * Returns 0 for success.
2852 int snd_soc_dapm_put_enum_virt(struct snd_kcontrol *kcontrol,
2853 struct snd_ctl_elem_value *ucontrol)
2855 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2856 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2857 struct snd_soc_codec *codec = widget->codec;
2858 struct snd_soc_card *card = codec->card;
2859 struct soc_enum *e =
2860 (struct soc_enum *)kcontrol->private_value;
2865 if (ucontrol->value.enumerated.item[0] >= e->max)
2868 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2870 change = widget->value != ucontrol->value.enumerated.item[0];
2872 for (wi = 0; wi < wlist->num_widgets; wi++) {
2873 widget = wlist->widgets[wi];
2875 widget->value = ucontrol->value.enumerated.item[0];
2877 soc_dapm_mux_update_power(widget, kcontrol, widget->value, e);
2881 mutex_unlock(&card->dapm_mutex);
2884 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_virt);
2887 * snd_soc_dapm_get_value_enum_double - dapm semi enumerated double mixer get
2889 * @kcontrol: mixer control
2890 * @ucontrol: control element information
2892 * Callback to get the value of a dapm semi enumerated double mixer control.
2894 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2895 * used for handling bitfield coded enumeration for example.
2897 * Returns 0 for success.
2899 int snd_soc_dapm_get_value_enum_double(struct snd_kcontrol *kcontrol,
2900 struct snd_ctl_elem_value *ucontrol)
2902 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2903 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2904 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2905 unsigned int reg_val, val, mux;
2907 reg_val = snd_soc_read(widget->codec, e->reg);
2908 val = (reg_val >> e->shift_l) & e->mask;
2909 for (mux = 0; mux < e->max; mux++) {
2910 if (val == e->values[mux])
2913 ucontrol->value.enumerated.item[0] = mux;
2914 if (e->shift_l != e->shift_r) {
2915 val = (reg_val >> e->shift_r) & e->mask;
2916 for (mux = 0; mux < e->max; mux++) {
2917 if (val == e->values[mux])
2920 ucontrol->value.enumerated.item[1] = mux;
2925 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_value_enum_double);
2928 * snd_soc_dapm_put_value_enum_double - dapm semi enumerated double mixer set
2930 * @kcontrol: mixer control
2931 * @ucontrol: control element information
2933 * Callback to set the value of a dapm semi enumerated double mixer control.
2935 * Semi enumerated mixer: the enumerated items are referred as values. Can be
2936 * used for handling bitfield coded enumeration for example.
2938 * Returns 0 for success.
2940 int snd_soc_dapm_put_value_enum_double(struct snd_kcontrol *kcontrol,
2941 struct snd_ctl_elem_value *ucontrol)
2943 struct snd_soc_dapm_widget_list *wlist = snd_kcontrol_chip(kcontrol);
2944 struct snd_soc_dapm_widget *widget = wlist->widgets[0];
2945 struct snd_soc_codec *codec = widget->codec;
2946 struct snd_soc_card *card = codec->card;
2947 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
2948 unsigned int val, mux, change;
2950 struct snd_soc_dapm_update update;
2953 if (ucontrol->value.enumerated.item[0] > e->max - 1)
2955 mux = ucontrol->value.enumerated.item[0];
2956 val = e->values[ucontrol->value.enumerated.item[0]] << e->shift_l;
2957 mask = e->mask << e->shift_l;
2958 if (e->shift_l != e->shift_r) {
2959 if (ucontrol->value.enumerated.item[1] > e->max - 1)
2961 val |= e->values[ucontrol->value.enumerated.item[1]] << e->shift_r;
2962 mask |= e->mask << e->shift_r;
2965 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2967 change = snd_soc_test_bits(widget->codec, e->reg, mask, val);
2969 for (wi = 0; wi < wlist->num_widgets; wi++) {
2970 widget = wlist->widgets[wi];
2972 widget->value = val;
2974 update.kcontrol = kcontrol;
2975 update.widget = widget;
2976 update.reg = e->reg;
2979 widget->dapm->update = &update;
2981 soc_dapm_mux_update_power(widget, kcontrol, mux, e);
2983 widget->dapm->update = NULL;
2987 mutex_unlock(&card->dapm_mutex);
2990 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_value_enum_double);
2993 * snd_soc_dapm_info_pin_switch - Info for a pin switch
2995 * @kcontrol: mixer control
2996 * @uinfo: control element information
2998 * Callback to provide information about a pin switch control.
3000 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3001 struct snd_ctl_elem_info *uinfo)
3003 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3005 uinfo->value.integer.min = 0;
3006 uinfo->value.integer.max = 1;
3010 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3013 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3015 * @kcontrol: mixer control
3018 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3019 struct snd_ctl_elem_value *ucontrol)
3021 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3022 const char *pin = (const char *)kcontrol->private_value;
3024 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3026 ucontrol->value.integer.value[0] =
3027 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3029 mutex_unlock(&card->dapm_mutex);
3033 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3036 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3038 * @kcontrol: mixer control
3041 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3042 struct snd_ctl_elem_value *ucontrol)
3044 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3045 const char *pin = (const char *)kcontrol->private_value;
3047 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3049 if (ucontrol->value.integer.value[0])
3050 snd_soc_dapm_enable_pin(&card->dapm, pin);
3052 snd_soc_dapm_disable_pin(&card->dapm, pin);
3054 mutex_unlock(&card->dapm_mutex);
3056 snd_soc_dapm_sync(&card->dapm);
3059 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3061 static struct snd_soc_dapm_widget *
3062 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3063 const struct snd_soc_dapm_widget *widget)
3065 struct snd_soc_dapm_widget *w;
3069 if ((w = dapm_cnew_widget(widget)) == NULL)
3073 case snd_soc_dapm_regulator_supply:
3074 w->regulator = devm_regulator_get(dapm->dev, w->name);
3075 if (IS_ERR(w->regulator)) {
3076 ret = PTR_ERR(w->regulator);
3077 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3082 if (w->invert & SND_SOC_DAPM_REGULATOR_BYPASS) {
3083 ret = regulator_allow_bypass(w->regulator, true);
3085 dev_warn(w->dapm->dev,
3086 "ASoC: Failed to unbypass %s: %d\n",
3090 case snd_soc_dapm_clock_supply:
3091 #ifdef CONFIG_CLKDEV_LOOKUP
3092 w->clk = devm_clk_get(dapm->dev, w->name);
3093 if (IS_ERR(w->clk)) {
3094 ret = PTR_ERR(w->clk);
3095 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3107 name_len = strlen(widget->name) + 1;
3108 if (dapm->codec && dapm->codec->name_prefix)
3109 name_len += 1 + strlen(dapm->codec->name_prefix);
3110 w->name = kmalloc(name_len, GFP_KERNEL);
3111 if (w->name == NULL) {
3115 if (dapm->codec && dapm->codec->name_prefix)
3116 snprintf((char *)w->name, name_len, "%s %s",
3117 dapm->codec->name_prefix, widget->name);
3119 snprintf((char *)w->name, name_len, "%s", widget->name);
3122 case snd_soc_dapm_switch:
3123 case snd_soc_dapm_mixer:
3124 case snd_soc_dapm_mixer_named_ctl:
3125 w->power_check = dapm_generic_check_power;
3127 case snd_soc_dapm_mux:
3128 case snd_soc_dapm_virt_mux:
3129 case snd_soc_dapm_value_mux:
3130 w->power_check = dapm_generic_check_power;
3132 case snd_soc_dapm_adc:
3133 case snd_soc_dapm_aif_out:
3134 w->power_check = dapm_adc_check_power;
3136 case snd_soc_dapm_dac:
3137 case snd_soc_dapm_aif_in:
3138 w->power_check = dapm_dac_check_power;
3140 case snd_soc_dapm_pga:
3141 case snd_soc_dapm_out_drv:
3142 case snd_soc_dapm_input:
3143 case snd_soc_dapm_output:
3144 case snd_soc_dapm_micbias:
3145 case snd_soc_dapm_spk:
3146 case snd_soc_dapm_hp:
3147 case snd_soc_dapm_mic:
3148 case snd_soc_dapm_line:
3149 case snd_soc_dapm_dai_link:
3150 w->power_check = dapm_generic_check_power;
3152 case snd_soc_dapm_supply:
3153 case snd_soc_dapm_regulator_supply:
3154 case snd_soc_dapm_clock_supply:
3155 w->power_check = dapm_supply_check_power;
3157 case snd_soc_dapm_dai:
3158 w->power_check = dapm_dai_check_power;
3161 w->power_check = dapm_always_on_check_power;
3166 w->codec = dapm->codec;
3167 w->platform = dapm->platform;
3168 INIT_LIST_HEAD(&w->sources);
3169 INIT_LIST_HEAD(&w->sinks);
3170 INIT_LIST_HEAD(&w->list);
3171 INIT_LIST_HEAD(&w->dirty);
3172 list_add(&w->list, &dapm->card->widgets);
3174 /* machine layer set ups unconnected pins and insertions */
3180 * snd_soc_dapm_new_controls - create new dapm controls
3181 * @dapm: DAPM context
3182 * @widget: widget array
3183 * @num: number of widgets
3185 * Creates new DAPM controls based upon the templates.
3187 * Returns 0 for success else error.
3189 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3190 const struct snd_soc_dapm_widget *widget,
3193 struct snd_soc_dapm_widget *w;
3197 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3198 for (i = 0; i < num; i++) {
3199 w = snd_soc_dapm_new_control(dapm, widget);
3202 "ASoC: Failed to create DAPM control %s\n",
3209 mutex_unlock(&dapm->card->dapm_mutex);
3212 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3214 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3215 struct snd_kcontrol *kcontrol, int event)
3217 struct snd_soc_dapm_path *source_p, *sink_p;
3218 struct snd_soc_dai *source, *sink;
3219 const struct snd_soc_pcm_stream *config = w->params;
3220 struct snd_pcm_substream substream;
3221 struct snd_pcm_hw_params *params = NULL;
3226 BUG_ON(list_empty(&w->sources) || list_empty(&w->sinks));
3228 /* We only support a single source and sink, pick the first */
3229 source_p = list_first_entry(&w->sources, struct snd_soc_dapm_path,
3231 sink_p = list_first_entry(&w->sinks, struct snd_soc_dapm_path,
3234 BUG_ON(!source_p || !sink_p);
3235 BUG_ON(!sink_p->source || !source_p->sink);
3236 BUG_ON(!source_p->source || !sink_p->sink);
3238 source = source_p->source->priv;
3239 sink = sink_p->sink->priv;
3241 /* Be a little careful as we don't want to overflow the mask array */
3242 if (config->formats) {
3243 fmt = ffs(config->formats) - 1;
3245 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3250 /* Currently very limited parameter selection */
3251 params = kzalloc(sizeof(*params), GFP_KERNEL);
3256 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3258 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3260 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3263 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3264 = config->channels_min;
3265 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3266 = config->channels_max;
3268 memset(&substream, 0, sizeof(substream));
3271 case SND_SOC_DAPM_PRE_PMU:
3272 if (source->driver->ops && source->driver->ops->hw_params) {
3273 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3274 ret = source->driver->ops->hw_params(&substream,
3277 dev_err(source->dev,
3278 "ASoC: hw_params() failed: %d\n", ret);
3283 if (sink->driver->ops && sink->driver->ops->hw_params) {
3284 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3285 ret = sink->driver->ops->hw_params(&substream, params,
3289 "ASoC: hw_params() failed: %d\n", ret);
3295 case SND_SOC_DAPM_POST_PMU:
3296 ret = snd_soc_dai_digital_mute(sink, 0,
3297 SNDRV_PCM_STREAM_PLAYBACK);
3298 if (ret != 0 && ret != -ENOTSUPP)
3299 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3303 case SND_SOC_DAPM_PRE_PMD:
3304 ret = snd_soc_dai_digital_mute(sink, 1,
3305 SNDRV_PCM_STREAM_PLAYBACK);
3306 if (ret != 0 && ret != -ENOTSUPP)
3307 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3321 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3322 const struct snd_soc_pcm_stream *params,
3323 struct snd_soc_dapm_widget *source,
3324 struct snd_soc_dapm_widget *sink)
3326 struct snd_soc_dapm_route routes[2];
3327 struct snd_soc_dapm_widget template;
3328 struct snd_soc_dapm_widget *w;
3332 len = strlen(source->name) + strlen(sink->name) + 2;
3333 link_name = devm_kzalloc(card->dev, len, GFP_KERNEL);
3336 snprintf(link_name, len, "%s-%s", source->name, sink->name);
3338 memset(&template, 0, sizeof(template));
3339 template.reg = SND_SOC_NOPM;
3340 template.id = snd_soc_dapm_dai_link;
3341 template.name = link_name;
3342 template.event = snd_soc_dai_link_event;
3343 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3344 SND_SOC_DAPM_PRE_PMD;
3346 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3348 w = snd_soc_dapm_new_control(&card->dapm, &template);
3350 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3357 memset(&routes, 0, sizeof(routes));
3359 routes[0].source = source->name;
3360 routes[0].sink = link_name;
3361 routes[1].source = link_name;
3362 routes[1].sink = sink->name;
3364 return snd_soc_dapm_add_routes(&card->dapm, routes,
3365 ARRAY_SIZE(routes));
3368 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3369 struct snd_soc_dai *dai)
3371 struct snd_soc_dapm_widget template;
3372 struct snd_soc_dapm_widget *w;
3374 WARN_ON(dapm->dev != dai->dev);
3376 memset(&template, 0, sizeof(template));
3377 template.reg = SND_SOC_NOPM;
3379 if (dai->driver->playback.stream_name) {
3380 template.id = snd_soc_dapm_dai;
3381 template.name = dai->driver->playback.stream_name;
3382 template.sname = dai->driver->playback.stream_name;
3384 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3387 w = snd_soc_dapm_new_control(dapm, &template);
3389 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3390 dai->driver->playback.stream_name);
3394 dai->playback_widget = w;
3397 if (dai->driver->capture.stream_name) {
3398 template.id = snd_soc_dapm_dai;
3399 template.name = dai->driver->capture.stream_name;
3400 template.sname = dai->driver->capture.stream_name;
3402 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3405 w = snd_soc_dapm_new_control(dapm, &template);
3407 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3408 dai->driver->capture.stream_name);
3412 dai->capture_widget = w;
3418 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3420 struct snd_soc_dapm_widget *dai_w, *w;
3421 struct snd_soc_dai *dai;
3422 struct snd_soc_dapm_route r;
3424 memset(&r, 0, sizeof(r));
3426 /* For each DAI widget... */
3427 list_for_each_entry(dai_w, &card->widgets, list) {
3428 if (dai_w->id != snd_soc_dapm_dai)
3433 /* ...find all widgets with the same stream and link them */
3434 list_for_each_entry(w, &card->widgets, list) {
3435 if (w->dapm != dai_w->dapm)
3438 if (w->id == snd_soc_dapm_dai)
3444 if (dai->driver->playback.stream_name &&
3446 dai->driver->playback.stream_name)) {
3447 r.source = dai->playback_widget->name;
3449 dev_dbg(dai->dev, "%s -> %s\n",
3452 snd_soc_dapm_add_route(w->dapm, &r);
3455 if (dai->driver->capture.stream_name &&
3457 dai->driver->capture.stream_name)) {
3459 r.sink = dai->capture_widget->name;
3460 dev_dbg(dai->dev, "%s -> %s\n",
3463 snd_soc_dapm_add_route(w->dapm, &r);
3471 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3475 struct snd_soc_dapm_widget *w_cpu, *w_codec;
3476 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3477 struct snd_soc_dai *codec_dai = rtd->codec_dai;
3479 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
3480 w_cpu = cpu_dai->playback_widget;
3481 w_codec = codec_dai->playback_widget;
3483 w_cpu = cpu_dai->capture_widget;
3484 w_codec = codec_dai->capture_widget;
3489 dapm_mark_dirty(w_cpu, "stream event");
3492 case SND_SOC_DAPM_STREAM_START:
3495 case SND_SOC_DAPM_STREAM_STOP:
3498 case SND_SOC_DAPM_STREAM_SUSPEND:
3499 case SND_SOC_DAPM_STREAM_RESUME:
3500 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3501 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3508 dapm_mark_dirty(w_codec, "stream event");
3511 case SND_SOC_DAPM_STREAM_START:
3512 w_codec->active = 1;
3514 case SND_SOC_DAPM_STREAM_STOP:
3515 w_codec->active = 0;
3517 case SND_SOC_DAPM_STREAM_SUSPEND:
3518 case SND_SOC_DAPM_STREAM_RESUME:
3519 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3520 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3525 dapm_power_widgets(&rtd->card->dapm, event);
3529 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3530 * @rtd: PCM runtime data
3531 * @stream: stream name
3532 * @event: stream event
3534 * Sends a stream event to the dapm core. The core then makes any
3535 * necessary widget power changes.
3537 * Returns 0 for success else error.
3539 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3542 struct snd_soc_card *card = rtd->card;
3544 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3545 soc_dapm_stream_event(rtd, stream, event);
3546 mutex_unlock(&card->dapm_mutex);
3550 * snd_soc_dapm_enable_pin - enable pin.
3551 * @dapm: DAPM context
3554 * Enables input/output pin and its parents or children widgets iff there is
3555 * a valid audio route and active audio stream.
3556 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3557 * do any widget power switching.
3559 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3561 return snd_soc_dapm_set_pin(dapm, pin, 1);
3563 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3566 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3567 * @dapm: DAPM context
3570 * Enables input/output pin regardless of any other state. This is
3571 * intended for use with microphone bias supplies used in microphone
3574 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3575 * do any widget power switching.
3577 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
3580 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3583 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3587 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3590 dapm_mark_dirty(w, "force enable");
3594 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
3597 * snd_soc_dapm_disable_pin - disable pin.
3598 * @dapm: DAPM context
3601 * Disables input/output pin and its parents or children widgets.
3602 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3603 * do any widget power switching.
3605 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
3608 return snd_soc_dapm_set_pin(dapm, pin, 0);
3610 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
3613 * snd_soc_dapm_nc_pin - permanently disable pin.
3614 * @dapm: DAPM context
3617 * Marks the specified pin as being not connected, disabling it along
3618 * any parent or child widgets. At present this is identical to
3619 * snd_soc_dapm_disable_pin() but in future it will be extended to do
3620 * additional things such as disabling controls which only affect
3621 * paths through the pin.
3623 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3624 * do any widget power switching.
3626 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3628 return snd_soc_dapm_set_pin(dapm, pin, 0);
3630 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
3633 * snd_soc_dapm_get_pin_status - get audio pin status
3634 * @dapm: DAPM context
3635 * @pin: audio signal pin endpoint (or start point)
3637 * Get audio pin status - connected or disconnected.
3639 * Returns 1 for connected otherwise 0.
3641 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
3644 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3647 return w->connected;
3651 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
3654 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
3655 * @dapm: DAPM context
3656 * @pin: audio signal pin endpoint (or start point)
3658 * Mark the given endpoint or pin as ignoring suspend. When the
3659 * system is disabled a path between two endpoints flagged as ignoring
3660 * suspend will not be disabled. The path must already be enabled via
3661 * normal means at suspend time, it will not be turned on if it was not
3664 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
3667 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
3670 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3674 w->ignore_suspend = 1;
3678 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
3680 static bool snd_soc_dapm_widget_in_card_paths(struct snd_soc_card *card,
3681 struct snd_soc_dapm_widget *w)
3683 struct snd_soc_dapm_path *p;
3685 list_for_each_entry(p, &card->paths, list) {
3686 if ((p->source == w) || (p->sink == w)) {
3688 "... Path %s(id:%d dapm:%p) - %s(id:%d dapm:%p)\n",
3689 p->source->name, p->source->id, p->source->dapm,
3690 p->sink->name, p->sink->id, p->sink->dapm);
3692 /* Connected to something other than the codec */
3693 if (p->source->dapm != p->sink->dapm)
3696 * Loopback connection from codec external pin to
3697 * codec external pin
3699 if (p->sink->id == snd_soc_dapm_input) {
3700 switch (p->source->id) {
3701 case snd_soc_dapm_output:
3702 case snd_soc_dapm_micbias:
3715 * snd_soc_dapm_auto_nc_codec_pins - call snd_soc_dapm_nc_pin for unused pins
3716 * @codec: The codec whose pins should be processed
3718 * Automatically call snd_soc_dapm_nc_pin() for any external pins in the codec
3719 * which are unused. Pins are used if they are connected externally to the
3720 * codec, whether that be to some other device, or a loop-back connection to
3723 void snd_soc_dapm_auto_nc_codec_pins(struct snd_soc_codec *codec)
3725 struct snd_soc_card *card = codec->card;
3726 struct snd_soc_dapm_context *dapm = &codec->dapm;
3727 struct snd_soc_dapm_widget *w;
3729 dev_dbg(codec->dev, "ASoC: Auto NC: DAPMs: card:%p codec:%p\n",
3730 &card->dapm, &codec->dapm);
3732 list_for_each_entry(w, &card->widgets, list) {
3733 if (w->dapm != dapm)
3736 case snd_soc_dapm_input:
3737 case snd_soc_dapm_output:
3738 case snd_soc_dapm_micbias:
3739 dev_dbg(codec->dev, "ASoC: Auto NC: Checking widget %s\n",
3741 if (!snd_soc_dapm_widget_in_card_paths(card, w)) {
3743 "... Not in map; disabling\n");
3744 snd_soc_dapm_nc_pin(dapm, w->name);
3754 * snd_soc_dapm_free - free dapm resources
3755 * @dapm: DAPM context
3757 * Free all dapm widgets and resources.
3759 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
3761 snd_soc_dapm_sys_remove(dapm->dev);
3762 dapm_debugfs_cleanup(dapm);
3763 dapm_free_widgets(dapm);
3764 list_del(&dapm->list);
3766 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
3768 static void soc_dapm_shutdown_codec(struct snd_soc_dapm_context *dapm)
3770 struct snd_soc_card *card = dapm->card;
3771 struct snd_soc_dapm_widget *w;
3772 LIST_HEAD(down_list);
3775 mutex_lock(&card->dapm_mutex);
3777 list_for_each_entry(w, &dapm->card->widgets, list) {
3778 if (w->dapm != dapm)
3781 dapm_seq_insert(w, &down_list, false);
3787 /* If there were no widgets to power down we're already in
3791 if (dapm->bias_level == SND_SOC_BIAS_ON)
3792 snd_soc_dapm_set_bias_level(dapm,
3793 SND_SOC_BIAS_PREPARE);
3794 dapm_seq_run(dapm, &down_list, 0, false);
3795 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
3796 snd_soc_dapm_set_bias_level(dapm,
3797 SND_SOC_BIAS_STANDBY);
3800 mutex_unlock(&card->dapm_mutex);
3804 * snd_soc_dapm_shutdown - callback for system shutdown
3806 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
3808 struct snd_soc_codec *codec;
3810 list_for_each_entry(codec, &card->codec_dev_list, card_list) {
3811 soc_dapm_shutdown_codec(&codec->dapm);
3812 if (codec->dapm.bias_level == SND_SOC_BIAS_STANDBY)
3813 snd_soc_dapm_set_bias_level(&codec->dapm,
3818 /* Module information */
3819 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
3820 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
3821 MODULE_LICENSE("GPL");