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 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
51 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
53 #define snd_soc_dapm_for_each_direction(dir) \
54 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
57 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
58 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
60 int (*connected)(struct snd_soc_dapm_widget *source,
61 struct snd_soc_dapm_widget *sink));
63 struct snd_soc_dapm_widget *
64 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
65 const struct snd_soc_dapm_widget *widget);
67 struct snd_soc_dapm_widget *
68 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
69 const struct snd_soc_dapm_widget *widget);
71 /* dapm power sequences - make this per codec in the future */
72 static int dapm_up_seq[] = {
73 [snd_soc_dapm_pre] = 0,
74 [snd_soc_dapm_regulator_supply] = 1,
75 [snd_soc_dapm_clock_supply] = 1,
76 [snd_soc_dapm_supply] = 2,
77 [snd_soc_dapm_micbias] = 3,
78 [snd_soc_dapm_dai_link] = 2,
79 [snd_soc_dapm_dai_in] = 4,
80 [snd_soc_dapm_dai_out] = 4,
81 [snd_soc_dapm_aif_in] = 4,
82 [snd_soc_dapm_aif_out] = 4,
83 [snd_soc_dapm_mic] = 5,
84 [snd_soc_dapm_mux] = 6,
85 [snd_soc_dapm_demux] = 6,
86 [snd_soc_dapm_dac] = 7,
87 [snd_soc_dapm_switch] = 8,
88 [snd_soc_dapm_mixer] = 8,
89 [snd_soc_dapm_mixer_named_ctl] = 8,
90 [snd_soc_dapm_pga] = 9,
91 [snd_soc_dapm_adc] = 10,
92 [snd_soc_dapm_out_drv] = 11,
93 [snd_soc_dapm_hp] = 11,
94 [snd_soc_dapm_spk] = 11,
95 [snd_soc_dapm_line] = 11,
96 [snd_soc_dapm_kcontrol] = 12,
97 [snd_soc_dapm_post] = 13,
100 static int dapm_down_seq[] = {
101 [snd_soc_dapm_pre] = 0,
102 [snd_soc_dapm_kcontrol] = 1,
103 [snd_soc_dapm_adc] = 2,
104 [snd_soc_dapm_hp] = 3,
105 [snd_soc_dapm_spk] = 3,
106 [snd_soc_dapm_line] = 3,
107 [snd_soc_dapm_out_drv] = 3,
108 [snd_soc_dapm_pga] = 4,
109 [snd_soc_dapm_switch] = 5,
110 [snd_soc_dapm_mixer_named_ctl] = 5,
111 [snd_soc_dapm_mixer] = 5,
112 [snd_soc_dapm_dac] = 6,
113 [snd_soc_dapm_mic] = 7,
114 [snd_soc_dapm_micbias] = 8,
115 [snd_soc_dapm_mux] = 9,
116 [snd_soc_dapm_demux] = 9,
117 [snd_soc_dapm_aif_in] = 10,
118 [snd_soc_dapm_aif_out] = 10,
119 [snd_soc_dapm_dai_in] = 10,
120 [snd_soc_dapm_dai_out] = 10,
121 [snd_soc_dapm_dai_link] = 11,
122 [snd_soc_dapm_supply] = 12,
123 [snd_soc_dapm_clock_supply] = 13,
124 [snd_soc_dapm_regulator_supply] = 13,
125 [snd_soc_dapm_post] = 14,
128 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
130 if (dapm->card && dapm->card->instantiated)
131 lockdep_assert_held(&dapm->card->dapm_mutex);
134 static void pop_wait(u32 pop_time)
137 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
140 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
148 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
153 vsnprintf(buf, PAGE_SIZE, fmt, args);
154 dev_info(dev, "%s", buf);
160 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
162 return !list_empty(&w->dirty);
165 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
167 dapm_assert_locked(w->dapm);
169 if (!dapm_dirty_widget(w)) {
170 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
172 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
177 * Common implementation for dapm_widget_invalidate_input_paths() and
178 * dapm_widget_invalidate_output_paths(). The function is inlined since the
179 * combined size of the two specialized functions is only marginally larger then
180 * the size of the generic function and at the same time the fast path of the
181 * specialized functions is significantly smaller than the generic function.
183 static __always_inline void dapm_widget_invalidate_paths(
184 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
186 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
187 struct snd_soc_dapm_widget *node;
188 struct snd_soc_dapm_path *p;
191 dapm_assert_locked(w->dapm);
193 if (w->endpoints[dir] == -1)
196 list_add_tail(&w->work_list, &list);
197 w->endpoints[dir] = -1;
199 list_for_each_entry(w, &list, work_list) {
200 snd_soc_dapm_widget_for_each_path(w, dir, p) {
201 if (p->is_supply || p->weak || !p->connect)
203 node = p->node[rdir];
204 if (node->endpoints[dir] != -1) {
205 node->endpoints[dir] = -1;
206 list_add_tail(&node->work_list, &list);
213 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
215 * @w: The widget for which to invalidate the cached number of input paths
217 * Resets the cached number of inputs for the specified widget and all widgets
218 * that can be reached via outcoming paths from the widget.
220 * This function must be called if the number of output paths for a widget might
221 * have changed. E.g. if the source state of a widget changes or a path is added
222 * or activated with the widget as the sink.
224 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
226 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
230 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
232 * @w: The widget for which to invalidate the cached number of output paths
234 * Resets the cached number of outputs for the specified widget and all widgets
235 * that can be reached via incoming paths from the widget.
237 * This function must be called if the number of output paths for a widget might
238 * have changed. E.g. if the sink state of a widget changes or a path is added
239 * or activated with the widget as the source.
241 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
243 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
247 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
248 * for the widgets connected to a path
249 * @p: The path to invalidate
251 * Resets the cached number of inputs for the sink of the path and the cached
252 * number of outputs for the source of the path.
254 * This function must be called when a path is added, removed or the connected
257 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
260 * Weak paths or supply paths do not influence the number of input or
261 * output paths of their neighbors.
263 if (p->weak || p->is_supply)
267 * The number of connected endpoints is the sum of the number of
268 * connected endpoints of all neighbors. If a node with 0 connected
269 * endpoints is either connected or disconnected that sum won't change,
270 * so there is no need to re-check the path.
272 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
273 dapm_widget_invalidate_input_paths(p->sink);
274 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
275 dapm_widget_invalidate_output_paths(p->source);
278 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
280 struct snd_soc_dapm_widget *w;
282 mutex_lock(&card->dapm_mutex);
284 list_for_each_entry(w, &card->widgets, list) {
286 dapm_mark_dirty(w, "Rechecking endpoints");
287 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
288 dapm_widget_invalidate_output_paths(w);
289 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
290 dapm_widget_invalidate_input_paths(w);
294 mutex_unlock(&card->dapm_mutex);
296 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
298 /* create a new dapm widget */
299 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
300 const struct snd_soc_dapm_widget *_widget)
302 return kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
305 struct dapm_kcontrol_data {
307 struct snd_soc_dapm_widget *widget;
308 struct list_head paths;
309 struct snd_soc_dapm_widget_list *wlist;
312 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
313 struct snd_kcontrol *kcontrol)
315 struct dapm_kcontrol_data *data;
316 struct soc_mixer_control *mc;
321 data = kzalloc(sizeof(*data), GFP_KERNEL);
325 INIT_LIST_HEAD(&data->paths);
327 switch (widget->id) {
328 case snd_soc_dapm_switch:
329 case snd_soc_dapm_mixer:
330 case snd_soc_dapm_mixer_named_ctl:
331 mc = (struct soc_mixer_control *)kcontrol->private_value;
333 if (mc->autodisable) {
334 struct snd_soc_dapm_widget template;
336 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
343 memset(&template, 0, sizeof(template));
344 template.reg = mc->reg;
345 template.mask = (1 << fls(mc->max)) - 1;
346 template.shift = mc->shift;
348 template.off_val = mc->max;
350 template.off_val = 0;
351 template.on_val = template.off_val;
352 template.id = snd_soc_dapm_kcontrol;
353 template.name = name;
355 data->value = template.on_val;
358 snd_soc_dapm_new_control_unlocked(widget->dapm,
367 case snd_soc_dapm_demux:
368 case snd_soc_dapm_mux:
369 e = (struct soc_enum *)kcontrol->private_value;
371 if (e->autodisable) {
372 struct snd_soc_dapm_widget template;
374 name = kasprintf(GFP_KERNEL, "%s %s", kcontrol->id.name,
381 memset(&template, 0, sizeof(template));
382 template.reg = e->reg;
383 template.mask = e->mask << e->shift_l;
384 template.shift = e->shift_l;
385 template.off_val = snd_soc_enum_item_to_val(e, 0);
386 template.on_val = template.off_val;
387 template.id = snd_soc_dapm_kcontrol;
388 template.name = name;
390 data->value = template.on_val;
392 data->widget = snd_soc_dapm_new_control_unlocked(
393 widget->dapm, &template);
400 snd_soc_dapm_add_path(widget->dapm, data->widget,
408 kcontrol->private_data = data;
417 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
419 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
424 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
425 const struct snd_kcontrol *kcontrol)
427 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
432 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
433 struct snd_soc_dapm_widget *widget)
435 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
436 struct snd_soc_dapm_widget_list *new_wlist;
440 n = data->wlist->num_widgets + 1;
444 new_wlist = krealloc(data->wlist,
445 sizeof(*new_wlist) + sizeof(widget) * n, GFP_KERNEL);
449 new_wlist->widgets[n - 1] = widget;
450 new_wlist->num_widgets = n;
452 data->wlist = new_wlist;
457 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
458 struct snd_soc_dapm_path *path)
460 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
462 list_add_tail(&path->list_kcontrol, &data->paths);
465 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
467 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
472 return data->widget->power;
475 static struct list_head *dapm_kcontrol_get_path_list(
476 const struct snd_kcontrol *kcontrol)
478 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
483 #define dapm_kcontrol_for_each_path(path, kcontrol) \
484 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
487 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
489 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
493 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
495 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
498 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
500 if (data->value == value)
504 data->widget->on_val = value;
512 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
514 * @kcontrol: The kcontrol
516 * Note: This function must only be used on kcontrols that are known to have
517 * been registered for a CODEC. Otherwise the behaviour is undefined.
519 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
520 struct snd_kcontrol *kcontrol)
522 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
524 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
526 static void dapm_reset(struct snd_soc_card *card)
528 struct snd_soc_dapm_widget *w;
530 lockdep_assert_held(&card->dapm_mutex);
532 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
534 list_for_each_entry(w, &card->widgets, list) {
535 w->new_power = w->power;
536 w->power_checked = false;
540 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
542 if (!dapm->component)
544 return dapm->component->name_prefix;
547 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
550 if (!dapm->component)
552 return snd_soc_component_read(dapm->component, reg, value);
555 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
556 int reg, unsigned int mask, unsigned int value)
558 if (!dapm->component)
560 return snd_soc_component_update_bits(dapm->component, reg,
564 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
565 int reg, unsigned int mask, unsigned int value)
567 if (!dapm->component)
569 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
572 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
575 snd_soc_component_async_complete(dapm->component);
578 static struct snd_soc_dapm_widget *
579 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
581 struct snd_soc_dapm_widget *w = wcache->widget;
582 struct list_head *wlist;
587 wlist = &w->dapm->card->widgets;
589 list_for_each_entry_from(w, wlist, list) {
590 if (!strcmp(name, w->name))
601 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
602 struct snd_soc_dapm_widget *w)
608 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
609 * @dapm: The DAPM context for which to set the level
610 * @level: The level to set
612 * Forces the DAPM bias level to a specific state. It will call the bias level
613 * callback of DAPM context with the specified level. This will even happen if
614 * the context is already at the same level. Furthermore it will not go through
615 * the normal bias level sequencing, meaning any intermediate states between the
616 * current and the target state will not be entered.
618 * Note that the change in bias level is only temporary and the next time
619 * snd_soc_dapm_sync() is called the state will be set to the level as
620 * determined by the DAPM core. The function is mainly intended to be used to
621 * used during probe or resume from suspend to power up the device so
622 * initialization can be done, before the DAPM core takes over.
624 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
625 enum snd_soc_bias_level level)
629 if (dapm->set_bias_level)
630 ret = dapm->set_bias_level(dapm, level);
633 dapm->bias_level = level;
637 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
640 * snd_soc_dapm_set_bias_level - set the bias level for the system
641 * @dapm: DAPM context
642 * @level: level to configure
644 * Configure the bias (power) levels for the SoC audio device.
646 * Returns 0 for success else error.
648 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
649 enum snd_soc_bias_level level)
651 struct snd_soc_card *card = dapm->card;
654 trace_snd_soc_bias_level_start(card, level);
656 if (card && card->set_bias_level)
657 ret = card->set_bias_level(card, dapm, level);
661 if (!card || dapm != &card->dapm)
662 ret = snd_soc_dapm_force_bias_level(dapm, level);
667 if (card && card->set_bias_level_post)
668 ret = card->set_bias_level_post(card, dapm, level);
670 trace_snd_soc_bias_level_done(card, level);
675 /* connect mux widget to its interconnecting audio paths */
676 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
677 struct snd_soc_dapm_path *path, const char *control_name,
678 struct snd_soc_dapm_widget *w)
680 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
681 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
682 unsigned int val, item;
685 if (e->reg != SND_SOC_NOPM) {
686 soc_dapm_read(dapm, e->reg, &val);
687 val = (val >> e->shift_l) & e->mask;
688 item = snd_soc_enum_val_to_item(e, val);
690 /* since a virtual mux has no backing registers to
691 * decide which path to connect, it will try to match
692 * with the first enumeration. This is to ensure
693 * that the default mux choice (the first) will be
694 * correctly powered up during initialization.
699 for (i = 0; i < e->items; i++) {
700 if (!(strcmp(control_name, e->texts[i]))) {
701 path->name = e->texts[i];
713 /* set up initial codec paths */
714 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i)
716 struct soc_mixer_control *mc = (struct soc_mixer_control *)
717 p->sink->kcontrol_news[i].private_value;
718 unsigned int reg = mc->reg;
719 unsigned int shift = mc->shift;
720 unsigned int max = mc->max;
721 unsigned int mask = (1 << fls(max)) - 1;
722 unsigned int invert = mc->invert;
725 if (reg != SND_SOC_NOPM) {
726 soc_dapm_read(p->sink->dapm, reg, &val);
727 val = (val >> shift) & mask;
736 /* connect mixer widget to its interconnecting audio paths */
737 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
738 struct snd_soc_dapm_path *path, const char *control_name)
742 /* search for mixer kcontrol */
743 for (i = 0; i < path->sink->num_kcontrols; i++) {
744 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
745 path->name = path->sink->kcontrol_news[i].name;
746 dapm_set_mixer_path_status(path, i);
753 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
754 struct snd_soc_dapm_widget *kcontrolw,
755 const struct snd_kcontrol_new *kcontrol_new,
756 struct snd_kcontrol **kcontrol)
758 struct snd_soc_dapm_widget *w;
763 list_for_each_entry(w, &dapm->card->widgets, list) {
764 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
766 for (i = 0; i < w->num_kcontrols; i++) {
767 if (&w->kcontrol_news[i] == kcontrol_new) {
769 *kcontrol = w->kcontrols[i];
779 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
780 * create it. Either way, add the widget into the control's widget list
782 static int dapm_create_or_share_mixmux_kcontrol(struct snd_soc_dapm_widget *w,
785 struct snd_soc_dapm_context *dapm = w->dapm;
786 struct snd_card *card = dapm->card->snd_card;
790 struct snd_kcontrol *kcontrol;
791 bool wname_in_long_name, kcname_in_long_name;
792 char *long_name = NULL;
796 prefix = soc_dapm_prefix(dapm);
798 prefix_len = strlen(prefix) + 1;
802 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
807 wname_in_long_name = false;
808 kcname_in_long_name = true;
811 case snd_soc_dapm_switch:
812 case snd_soc_dapm_mixer:
813 wname_in_long_name = true;
814 kcname_in_long_name = true;
816 case snd_soc_dapm_mixer_named_ctl:
817 wname_in_long_name = false;
818 kcname_in_long_name = true;
820 case snd_soc_dapm_demux:
821 case snd_soc_dapm_mux:
822 wname_in_long_name = true;
823 kcname_in_long_name = false;
830 if (wname_in_long_name && kcname_in_long_name) {
832 * The control will get a prefix from the control
833 * creation process but we're also using the same
834 * prefix for widgets so cut the prefix off the
835 * front of the widget name.
837 long_name = kasprintf(GFP_KERNEL, "%s %s",
838 w->name + prefix_len,
839 w->kcontrol_news[kci].name);
840 if (long_name == NULL)
844 } else if (wname_in_long_name) {
846 name = w->name + prefix_len;
849 name = w->kcontrol_news[kci].name;
852 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
859 kcontrol->private_free = dapm_kcontrol_free;
861 ret = dapm_kcontrol_data_alloc(w, kcontrol);
863 snd_ctl_free_one(kcontrol);
867 ret = snd_ctl_add(card, kcontrol);
870 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
876 ret = dapm_kcontrol_add_widget(kcontrol, w);
878 w->kcontrols[kci] = kcontrol;
886 /* create new dapm mixer control */
887 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
890 struct snd_soc_dapm_path *path;
891 struct dapm_kcontrol_data *data;
894 for (i = 0; i < w->num_kcontrols; i++) {
896 snd_soc_dapm_widget_for_each_source_path(w, path) {
897 /* mixer/mux paths name must match control name */
898 if (path->name != (char *)w->kcontrol_news[i].name)
901 if (!w->kcontrols[i]) {
902 ret = dapm_create_or_share_mixmux_kcontrol(w, i);
907 dapm_kcontrol_add_path(w->kcontrols[i], path);
909 data = snd_kcontrol_chip(w->kcontrols[i]);
911 snd_soc_dapm_add_path(data->widget->dapm,
921 /* create new dapm mux control */
922 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
924 struct snd_soc_dapm_context *dapm = w->dapm;
925 enum snd_soc_dapm_direction dir;
926 struct snd_soc_dapm_path *path;
931 case snd_soc_dapm_mux:
932 dir = SND_SOC_DAPM_DIR_OUT;
935 case snd_soc_dapm_demux:
936 dir = SND_SOC_DAPM_DIR_IN;
943 if (w->num_kcontrols != 1) {
945 "ASoC: %s %s has incorrect number of controls\n", type,
950 if (list_empty(&w->edges[dir])) {
951 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
955 ret = dapm_create_or_share_mixmux_kcontrol(w, 0);
959 snd_soc_dapm_widget_for_each_path(w, dir, path) {
961 dapm_kcontrol_add_path(w->kcontrols[0], path);
967 /* create new dapm volume control */
968 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
970 if (w->num_kcontrols)
971 dev_err(w->dapm->dev,
972 "ASoC: PGA controls not supported: '%s'\n", w->name);
977 /* create new dapm dai link control */
978 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
981 struct snd_kcontrol *kcontrol;
982 struct snd_soc_dapm_context *dapm = w->dapm;
983 struct snd_card *card = dapm->card->snd_card;
985 /* create control for links with > 1 config */
986 if (w->num_params <= 1)
990 for (i = 0; i < w->num_kcontrols; i++) {
991 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
993 ret = snd_ctl_add(card, kcontrol);
996 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
997 w->name, w->kcontrol_news[i].name, ret);
1000 kcontrol->private_data = w;
1001 w->kcontrols[i] = kcontrol;
1007 /* We implement power down on suspend by checking the power state of
1008 * the ALSA card - when we are suspending the ALSA state for the card
1011 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1013 int level = snd_power_get_state(widget->dapm->card->snd_card);
1016 case SNDRV_CTL_POWER_D3hot:
1017 case SNDRV_CTL_POWER_D3cold:
1018 if (widget->ignore_suspend)
1019 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1021 return widget->ignore_suspend;
1027 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1028 struct list_head *widgets)
1030 struct snd_soc_dapm_widget *w;
1031 struct list_head *it;
1032 unsigned int size = 0;
1035 list_for_each(it, widgets)
1038 *list = kzalloc(sizeof(**list) + size * sizeof(*w), GFP_KERNEL);
1042 list_for_each_entry(w, widgets, work_list)
1043 (*list)->widgets[i++] = w;
1045 (*list)->num_widgets = i;
1051 * Common implementation for is_connected_output_ep() and
1052 * is_connected_input_ep(). The function is inlined since the combined size of
1053 * the two specialized functions is only marginally larger then the size of the
1054 * generic function and at the same time the fast path of the specialized
1055 * functions is significantly smaller than the generic function.
1057 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1058 struct list_head *list, enum snd_soc_dapm_direction dir,
1059 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *))
1061 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1062 struct snd_soc_dapm_path *path;
1065 if (widget->endpoints[dir] >= 0)
1066 return widget->endpoints[dir];
1068 DAPM_UPDATE_STAT(widget, path_checks);
1070 /* do we need to add this widget to the list ? */
1072 list_add_tail(&widget->work_list, list);
1074 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1075 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1076 return widget->endpoints[dir];
1079 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1080 DAPM_UPDATE_STAT(widget, neighbour_checks);
1082 if (path->weak || path->is_supply)
1088 trace_snd_soc_dapm_path(widget, dir, path);
1090 if (path->connect) {
1092 con += fn(path->node[dir], list);
1097 widget->endpoints[dir] = con;
1103 * Recursively check for a completed path to an active or physically connected
1104 * output widget. Returns number of complete paths.
1106 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1107 struct list_head *list)
1109 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1110 is_connected_output_ep);
1114 * Recursively check for a completed path to an active or physically connected
1115 * input widget. Returns number of complete paths.
1117 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1118 struct list_head *list)
1120 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1121 is_connected_input_ep);
1125 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1126 * @dai: the soc DAI.
1127 * @stream: stream direction.
1128 * @list: list of active widgets for this stream.
1130 * Queries DAPM graph as to whether an valid audio stream path exists for
1131 * the initial stream specified by name. This takes into account
1132 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1134 * Returns the number of valid paths or negative error.
1136 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1137 struct snd_soc_dapm_widget_list **list)
1139 struct snd_soc_card *card = dai->component->card;
1140 struct snd_soc_dapm_widget *w;
1145 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1148 * For is_connected_{output,input}_ep fully discover the graph we need
1149 * to reset the cached number of inputs and outputs.
1151 list_for_each_entry(w, &card->widgets, list) {
1152 w->endpoints[SND_SOC_DAPM_DIR_IN] = -1;
1153 w->endpoints[SND_SOC_DAPM_DIR_OUT] = -1;
1156 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
1157 paths = is_connected_output_ep(dai->playback_widget, &widgets);
1159 paths = is_connected_input_ep(dai->capture_widget, &widgets);
1161 /* Drop starting point */
1162 list_del(widgets.next);
1164 ret = dapm_widget_list_create(list, &widgets);
1168 trace_snd_soc_dapm_connected(paths, stream);
1169 mutex_unlock(&card->dapm_mutex);
1175 * Handler for regulator supply widget.
1177 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1178 struct snd_kcontrol *kcontrol, int event)
1182 soc_dapm_async_complete(w->dapm);
1184 if (SND_SOC_DAPM_EVENT_ON(event)) {
1185 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1186 ret = regulator_allow_bypass(w->regulator, false);
1188 dev_warn(w->dapm->dev,
1189 "ASoC: Failed to unbypass %s: %d\n",
1193 return regulator_enable(w->regulator);
1195 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1196 ret = regulator_allow_bypass(w->regulator, true);
1198 dev_warn(w->dapm->dev,
1199 "ASoC: Failed to bypass %s: %d\n",
1203 return regulator_disable_deferred(w->regulator, w->shift);
1206 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1209 * Handler for clock supply widget.
1211 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1212 struct snd_kcontrol *kcontrol, int event)
1217 soc_dapm_async_complete(w->dapm);
1219 #ifdef CONFIG_HAVE_CLK
1220 if (SND_SOC_DAPM_EVENT_ON(event)) {
1221 return clk_prepare_enable(w->clk);
1223 clk_disable_unprepare(w->clk);
1229 EXPORT_SYMBOL_GPL(dapm_clock_event);
1231 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1233 if (w->power_checked)
1234 return w->new_power;
1239 w->new_power = w->power_check(w);
1241 w->power_checked = true;
1243 return w->new_power;
1246 /* Generic check to see if a widget should be powered.
1248 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1252 DAPM_UPDATE_STAT(w, power_checks);
1254 in = is_connected_input_ep(w, NULL);
1255 out = is_connected_output_ep(w, NULL);
1256 return out != 0 && in != 0;
1259 /* Check to see if a power supply is needed */
1260 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1262 struct snd_soc_dapm_path *path;
1264 DAPM_UPDATE_STAT(w, power_checks);
1266 /* Check if one of our outputs is connected */
1267 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1268 DAPM_UPDATE_STAT(w, neighbour_checks);
1273 if (path->connected &&
1274 !path->connected(path->source, path->sink))
1277 if (dapm_widget_power_check(path->sink))
1284 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1289 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1290 struct snd_soc_dapm_widget *b,
1298 sort = dapm_down_seq;
1300 if (sort[a->id] != sort[b->id])
1301 return sort[a->id] - sort[b->id];
1302 if (a->subseq != b->subseq) {
1304 return a->subseq - b->subseq;
1306 return b->subseq - a->subseq;
1308 if (a->reg != b->reg)
1309 return a->reg - b->reg;
1310 if (a->dapm != b->dapm)
1311 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1316 /* Insert a widget in order into a DAPM power sequence. */
1317 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1318 struct list_head *list,
1321 struct snd_soc_dapm_widget *w;
1323 list_for_each_entry(w, list, power_list)
1324 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1325 list_add_tail(&new_widget->power_list, &w->power_list);
1329 list_add_tail(&new_widget->power_list, list);
1332 static void dapm_seq_check_event(struct snd_soc_card *card,
1333 struct snd_soc_dapm_widget *w, int event)
1335 const char *ev_name;
1339 case SND_SOC_DAPM_PRE_PMU:
1340 ev_name = "PRE_PMU";
1343 case SND_SOC_DAPM_POST_PMU:
1344 ev_name = "POST_PMU";
1347 case SND_SOC_DAPM_PRE_PMD:
1348 ev_name = "PRE_PMD";
1351 case SND_SOC_DAPM_POST_PMD:
1352 ev_name = "POST_PMD";
1355 case SND_SOC_DAPM_WILL_PMU:
1356 ev_name = "WILL_PMU";
1359 case SND_SOC_DAPM_WILL_PMD:
1360 ev_name = "WILL_PMD";
1364 WARN(1, "Unknown event %d\n", event);
1368 if (w->new_power != power)
1371 if (w->event && (w->event_flags & event)) {
1372 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1374 soc_dapm_async_complete(w->dapm);
1375 trace_snd_soc_dapm_widget_event_start(w, event);
1376 ret = w->event(w, NULL, event);
1377 trace_snd_soc_dapm_widget_event_done(w, event);
1379 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1380 ev_name, w->name, ret);
1384 /* Apply the coalesced changes from a DAPM sequence */
1385 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1386 struct list_head *pending)
1388 struct snd_soc_dapm_context *dapm;
1389 struct snd_soc_dapm_widget *w;
1391 unsigned int value = 0;
1392 unsigned int mask = 0;
1394 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1398 list_for_each_entry(w, pending, power_list) {
1399 WARN_ON(reg != w->reg || dapm != w->dapm);
1400 w->power = w->new_power;
1402 mask |= w->mask << w->shift;
1404 value |= w->on_val << w->shift;
1406 value |= w->off_val << w->shift;
1408 pop_dbg(dapm->dev, card->pop_time,
1409 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1410 w->name, reg, value, mask);
1412 /* Check for events */
1413 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1414 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1418 /* Any widget will do, they should all be updating the
1422 pop_dbg(dapm->dev, card->pop_time,
1423 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1424 value, mask, reg, card->pop_time);
1425 pop_wait(card->pop_time);
1426 soc_dapm_update_bits(dapm, reg, mask, value);
1429 list_for_each_entry(w, pending, power_list) {
1430 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1431 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1435 /* Apply a DAPM power sequence.
1437 * We walk over a pre-sorted list of widgets to apply power to. In
1438 * order to minimise the number of writes to the device required
1439 * multiple widgets will be updated in a single write where possible.
1440 * Currently anything that requires more than a single write is not
1443 static void dapm_seq_run(struct snd_soc_card *card,
1444 struct list_head *list, int event, bool power_up)
1446 struct snd_soc_dapm_widget *w, *n;
1447 struct snd_soc_dapm_context *d;
1450 int cur_subseq = -1;
1451 int cur_reg = SND_SOC_NOPM;
1452 struct snd_soc_dapm_context *cur_dapm = NULL;
1459 sort = dapm_down_seq;
1461 list_for_each_entry_safe(w, n, list, power_list) {
1464 /* Do we need to apply any queued changes? */
1465 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1466 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1467 if (!list_empty(&pending))
1468 dapm_seq_run_coalesced(card, &pending);
1470 if (cur_dapm && cur_dapm->seq_notifier) {
1471 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1472 if (sort[i] == cur_sort)
1473 cur_dapm->seq_notifier(cur_dapm,
1478 if (cur_dapm && w->dapm != cur_dapm)
1479 soc_dapm_async_complete(cur_dapm);
1481 INIT_LIST_HEAD(&pending);
1483 cur_subseq = INT_MIN;
1484 cur_reg = SND_SOC_NOPM;
1489 case snd_soc_dapm_pre:
1491 list_for_each_entry_safe_continue(w, n, list,
1494 if (event == SND_SOC_DAPM_STREAM_START)
1496 NULL, SND_SOC_DAPM_PRE_PMU);
1497 else if (event == SND_SOC_DAPM_STREAM_STOP)
1499 NULL, SND_SOC_DAPM_PRE_PMD);
1502 case snd_soc_dapm_post:
1504 list_for_each_entry_safe_continue(w, n, list,
1507 if (event == SND_SOC_DAPM_STREAM_START)
1509 NULL, SND_SOC_DAPM_POST_PMU);
1510 else if (event == SND_SOC_DAPM_STREAM_STOP)
1512 NULL, SND_SOC_DAPM_POST_PMD);
1516 /* Queue it up for application */
1517 cur_sort = sort[w->id];
1518 cur_subseq = w->subseq;
1521 list_move(&w->power_list, &pending);
1526 dev_err(w->dapm->dev,
1527 "ASoC: Failed to apply widget power: %d\n", ret);
1530 if (!list_empty(&pending))
1531 dapm_seq_run_coalesced(card, &pending);
1533 if (cur_dapm && cur_dapm->seq_notifier) {
1534 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1535 if (sort[i] == cur_sort)
1536 cur_dapm->seq_notifier(cur_dapm,
1540 list_for_each_entry(d, &card->dapm_list, list) {
1541 soc_dapm_async_complete(d);
1545 static void dapm_widget_update(struct snd_soc_card *card)
1547 struct snd_soc_dapm_update *update = card->update;
1548 struct snd_soc_dapm_widget_list *wlist;
1549 struct snd_soc_dapm_widget *w = NULL;
1553 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1556 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1558 for (wi = 0; wi < wlist->num_widgets; wi++) {
1559 w = wlist->widgets[wi];
1561 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1562 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1564 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1572 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1575 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1578 for (wi = 0; wi < wlist->num_widgets; wi++) {
1579 w = wlist->widgets[wi];
1581 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1582 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1584 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1590 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1591 * they're changing state.
1593 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1595 struct snd_soc_dapm_context *d = data;
1598 /* If we're off and we're not supposed to be go into STANDBY */
1599 if (d->bias_level == SND_SOC_BIAS_OFF &&
1600 d->target_bias_level != SND_SOC_BIAS_OFF) {
1602 pm_runtime_get_sync(d->dev);
1604 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1607 "ASoC: Failed to turn on bias: %d\n", ret);
1610 /* Prepare for a transition to ON or away from ON */
1611 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1612 d->bias_level != SND_SOC_BIAS_ON) ||
1613 (d->target_bias_level != SND_SOC_BIAS_ON &&
1614 d->bias_level == SND_SOC_BIAS_ON)) {
1615 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1618 "ASoC: Failed to prepare bias: %d\n", ret);
1622 /* Async callback run prior to DAPM sequences - brings to their final
1625 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1627 struct snd_soc_dapm_context *d = data;
1630 /* If we just powered the last thing off drop to standby bias */
1631 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1632 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1633 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1634 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1636 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1640 /* If we're in standby and can support bias off then do that */
1641 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1642 d->target_bias_level == SND_SOC_BIAS_OFF) {
1643 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1645 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1649 pm_runtime_put(d->dev);
1652 /* If we just powered up then move to active bias */
1653 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1654 d->target_bias_level == SND_SOC_BIAS_ON) {
1655 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1657 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1662 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1663 bool power, bool connect)
1665 /* If a connection is being made or broken then that update
1666 * will have marked the peer dirty, otherwise the widgets are
1667 * not connected and this update has no impact. */
1671 /* If the peer is already in the state we're moving to then we
1672 * won't have an impact on it. */
1673 if (power != peer->power)
1674 dapm_mark_dirty(peer, "peer state change");
1677 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1678 struct list_head *up_list,
1679 struct list_head *down_list)
1681 struct snd_soc_dapm_path *path;
1683 if (w->power == power)
1686 trace_snd_soc_dapm_widget_power(w, power);
1688 /* If we changed our power state perhaps our neigbours changed
1691 snd_soc_dapm_widget_for_each_source_path(w, path)
1692 dapm_widget_set_peer_power(path->source, power, path->connect);
1694 /* Supplies can't affect their outputs, only their inputs */
1695 if (!w->is_supply) {
1696 snd_soc_dapm_widget_for_each_sink_path(w, path)
1697 dapm_widget_set_peer_power(path->sink, power,
1702 dapm_seq_insert(w, up_list, true);
1704 dapm_seq_insert(w, down_list, false);
1707 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1708 struct list_head *up_list,
1709 struct list_head *down_list)
1714 case snd_soc_dapm_pre:
1715 dapm_seq_insert(w, down_list, false);
1717 case snd_soc_dapm_post:
1718 dapm_seq_insert(w, up_list, true);
1722 power = dapm_widget_power_check(w);
1724 dapm_widget_set_power(w, power, up_list, down_list);
1729 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1731 if (dapm->idle_bias_off)
1734 switch (snd_power_get_state(dapm->card->snd_card)) {
1735 case SNDRV_CTL_POWER_D3hot:
1736 case SNDRV_CTL_POWER_D3cold:
1737 return dapm->suspend_bias_off;
1746 * Scan each dapm widget for complete audio path.
1747 * A complete path is a route that has valid endpoints i.e.:-
1749 * o DAC to output pin.
1750 * o Input Pin to ADC.
1751 * o Input pin to Output pin (bypass, sidetone)
1752 * o DAC to ADC (loopback).
1754 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1756 struct snd_soc_dapm_widget *w;
1757 struct snd_soc_dapm_context *d;
1759 LIST_HEAD(down_list);
1760 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1761 enum snd_soc_bias_level bias;
1763 lockdep_assert_held(&card->dapm_mutex);
1765 trace_snd_soc_dapm_start(card);
1767 list_for_each_entry(d, &card->dapm_list, list) {
1768 if (dapm_idle_bias_off(d))
1769 d->target_bias_level = SND_SOC_BIAS_OFF;
1771 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1776 /* Check which widgets we need to power and store them in
1777 * lists indicating if they should be powered up or down. We
1778 * only check widgets that have been flagged as dirty but note
1779 * that new widgets may be added to the dirty list while we
1782 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1783 dapm_power_one_widget(w, &up_list, &down_list);
1786 list_for_each_entry(w, &card->widgets, list) {
1788 case snd_soc_dapm_pre:
1789 case snd_soc_dapm_post:
1790 /* These widgets always need to be powered */
1793 list_del_init(&w->dirty);
1800 /* Supplies and micbiases only bring the
1801 * context up to STANDBY as unless something
1802 * else is active and passing audio they
1803 * generally don't require full power. Signal
1804 * generators are virtual pins and have no
1805 * power impact themselves.
1808 case snd_soc_dapm_siggen:
1809 case snd_soc_dapm_vmid:
1811 case snd_soc_dapm_supply:
1812 case snd_soc_dapm_regulator_supply:
1813 case snd_soc_dapm_clock_supply:
1814 case snd_soc_dapm_micbias:
1815 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
1816 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1819 d->target_bias_level = SND_SOC_BIAS_ON;
1826 /* Force all contexts in the card to the same bias state if
1827 * they're not ground referenced.
1829 bias = SND_SOC_BIAS_OFF;
1830 list_for_each_entry(d, &card->dapm_list, list)
1831 if (d->target_bias_level > bias)
1832 bias = d->target_bias_level;
1833 list_for_each_entry(d, &card->dapm_list, list)
1834 if (!dapm_idle_bias_off(d))
1835 d->target_bias_level = bias;
1837 trace_snd_soc_dapm_walk_done(card);
1839 /* Run card bias changes at first */
1840 dapm_pre_sequence_async(&card->dapm, 0);
1841 /* Run other bias changes in parallel */
1842 list_for_each_entry(d, &card->dapm_list, list) {
1843 if (d != &card->dapm)
1844 async_schedule_domain(dapm_pre_sequence_async, d,
1847 async_synchronize_full_domain(&async_domain);
1849 list_for_each_entry(w, &down_list, power_list) {
1850 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
1853 list_for_each_entry(w, &up_list, power_list) {
1854 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
1857 /* Power down widgets first; try to avoid amplifying pops. */
1858 dapm_seq_run(card, &down_list, event, false);
1860 dapm_widget_update(card);
1863 dapm_seq_run(card, &up_list, event, true);
1865 /* Run all the bias changes in parallel */
1866 list_for_each_entry(d, &card->dapm_list, list) {
1867 if (d != &card->dapm)
1868 async_schedule_domain(dapm_post_sequence_async, d,
1871 async_synchronize_full_domain(&async_domain);
1872 /* Run card bias changes at last */
1873 dapm_post_sequence_async(&card->dapm, 0);
1875 /* do we need to notify any clients that DAPM event is complete */
1876 list_for_each_entry(d, &card->dapm_list, list) {
1877 if (d->stream_event)
1878 d->stream_event(d, event);
1881 pop_dbg(card->dev, card->pop_time,
1882 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
1883 pop_wait(card->pop_time);
1885 trace_snd_soc_dapm_done(card);
1890 #ifdef CONFIG_DEBUG_FS
1891 static ssize_t dapm_widget_power_read_file(struct file *file,
1892 char __user *user_buf,
1893 size_t count, loff_t *ppos)
1895 struct snd_soc_dapm_widget *w = file->private_data;
1896 struct snd_soc_card *card = w->dapm->card;
1897 enum snd_soc_dapm_direction dir, rdir;
1901 struct snd_soc_dapm_path *p = NULL;
1903 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
1907 mutex_lock(&card->dapm_mutex);
1909 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
1914 in = is_connected_input_ep(w, NULL);
1915 out = is_connected_output_ep(w, NULL);
1918 ret = snprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
1919 w->name, w->power ? "On" : "Off",
1920 w->force ? " (forced)" : "", in, out);
1923 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1924 " - R%d(0x%x) mask 0x%x",
1925 w->reg, w->reg, w->mask << w->shift);
1927 ret += snprintf(buf + ret, PAGE_SIZE - ret, "\n");
1930 ret += snprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
1932 w->active ? "active" : "inactive");
1934 snd_soc_dapm_for_each_direction(dir) {
1935 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1936 snd_soc_dapm_widget_for_each_path(w, dir, p) {
1937 if (p->connected && !p->connected(w, p->node[rdir]))
1943 ret += snprintf(buf + ret, PAGE_SIZE - ret,
1944 " %s \"%s\" \"%s\"\n",
1945 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
1946 p->name ? p->name : "static",
1947 p->node[rdir]->name);
1951 mutex_unlock(&card->dapm_mutex);
1953 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
1959 static const struct file_operations dapm_widget_power_fops = {
1960 .open = simple_open,
1961 .read = dapm_widget_power_read_file,
1962 .llseek = default_llseek,
1965 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
1966 size_t count, loff_t *ppos)
1968 struct snd_soc_dapm_context *dapm = file->private_data;
1971 switch (dapm->bias_level) {
1972 case SND_SOC_BIAS_ON:
1975 case SND_SOC_BIAS_PREPARE:
1976 level = "Prepare\n";
1978 case SND_SOC_BIAS_STANDBY:
1979 level = "Standby\n";
1981 case SND_SOC_BIAS_OFF:
1985 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
1986 level = "Unknown\n";
1990 return simple_read_from_buffer(user_buf, count, ppos, level,
1994 static const struct file_operations dapm_bias_fops = {
1995 .open = simple_open,
1996 .read = dapm_bias_read_file,
1997 .llseek = default_llseek,
2000 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2001 struct dentry *parent)
2008 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2010 if (!dapm->debugfs_dapm) {
2012 "ASoC: Failed to create DAPM debugfs directory\n");
2016 d = debugfs_create_file("bias_level", 0444,
2017 dapm->debugfs_dapm, dapm,
2021 "ASoC: Failed to create bias level debugfs file\n");
2024 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2026 struct snd_soc_dapm_context *dapm = w->dapm;
2029 if (!dapm->debugfs_dapm || !w->name)
2032 d = debugfs_create_file(w->name, 0444,
2033 dapm->debugfs_dapm, w,
2034 &dapm_widget_power_fops);
2036 dev_warn(w->dapm->dev,
2037 "ASoC: Failed to create %s debugfs file\n",
2041 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2043 debugfs_remove_recursive(dapm->debugfs_dapm);
2047 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2048 struct dentry *parent)
2052 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2056 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2063 * soc_dapm_connect_path() - Connects or disconnects a path
2064 * @path: The path to update
2065 * @connect: The new connect state of the path. True if the path is connected,
2066 * false if it is disconneted.
2067 * @reason: The reason why the path changed (for debugging only)
2069 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2070 bool connect, const char *reason)
2072 if (path->connect == connect)
2075 path->connect = connect;
2076 dapm_mark_dirty(path->source, reason);
2077 dapm_mark_dirty(path->sink, reason);
2078 dapm_path_invalidate(path);
2081 /* test and update the power status of a mux widget */
2082 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2083 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2085 struct snd_soc_dapm_path *path;
2089 lockdep_assert_held(&card->dapm_mutex);
2091 /* find dapm widget path assoc with kcontrol */
2092 dapm_kcontrol_for_each_path(path, kcontrol) {
2094 /* we now need to match the string in the enum to the path */
2095 if (!(strcmp(path->name, e->texts[mux])))
2100 soc_dapm_connect_path(path, connect, "mux update");
2104 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2109 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2110 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2111 struct snd_soc_dapm_update *update)
2113 struct snd_soc_card *card = dapm->card;
2116 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2117 card->update = update;
2118 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2119 card->update = NULL;
2120 mutex_unlock(&card->dapm_mutex);
2122 soc_dpcm_runtime_update(card);
2125 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2127 /* test and update the power status of a mixer or switch widget */
2128 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2129 struct snd_kcontrol *kcontrol, int connect)
2131 struct snd_soc_dapm_path *path;
2134 lockdep_assert_held(&card->dapm_mutex);
2136 /* find dapm widget path assoc with kcontrol */
2137 dapm_kcontrol_for_each_path(path, kcontrol) {
2139 soc_dapm_connect_path(path, connect, "mixer update");
2143 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2148 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2149 struct snd_kcontrol *kcontrol, int connect,
2150 struct snd_soc_dapm_update *update)
2152 struct snd_soc_card *card = dapm->card;
2155 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2156 card->update = update;
2157 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
2158 card->update = NULL;
2159 mutex_unlock(&card->dapm_mutex);
2161 soc_dpcm_runtime_update(card);
2164 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2166 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2169 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2170 struct snd_soc_dapm_widget *w;
2172 char *state = "not set";
2174 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2175 if (w->dapm != dapm)
2178 /* only display widgets that burnm power */
2180 case snd_soc_dapm_hp:
2181 case snd_soc_dapm_mic:
2182 case snd_soc_dapm_spk:
2183 case snd_soc_dapm_line:
2184 case snd_soc_dapm_micbias:
2185 case snd_soc_dapm_dac:
2186 case snd_soc_dapm_adc:
2187 case snd_soc_dapm_pga:
2188 case snd_soc_dapm_out_drv:
2189 case snd_soc_dapm_mixer:
2190 case snd_soc_dapm_mixer_named_ctl:
2191 case snd_soc_dapm_supply:
2192 case snd_soc_dapm_regulator_supply:
2193 case snd_soc_dapm_clock_supply:
2195 count += sprintf(buf + count, "%s: %s\n",
2196 w->name, w->power ? "On":"Off");
2203 switch (snd_soc_dapm_get_bias_level(dapm)) {
2204 case SND_SOC_BIAS_ON:
2207 case SND_SOC_BIAS_PREPARE:
2210 case SND_SOC_BIAS_STANDBY:
2213 case SND_SOC_BIAS_OFF:
2217 count += sprintf(buf + count, "PM State: %s\n", state);
2222 /* show dapm widget status in sys fs */
2223 static ssize_t dapm_widget_show(struct device *dev,
2224 struct device_attribute *attr, char *buf)
2226 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2229 mutex_lock(&rtd->card->dapm_mutex);
2231 for (i = 0; i < rtd->num_codecs; i++) {
2232 struct snd_soc_component *cmpnt = rtd->codec_dais[i]->component;
2234 count += dapm_widget_show_component(cmpnt, buf + count);
2237 mutex_unlock(&rtd->card->dapm_mutex);
2242 static DEVICE_ATTR(dapm_widget, 0444, dapm_widget_show, NULL);
2244 struct attribute *soc_dapm_dev_attrs[] = {
2245 &dev_attr_dapm_widget.attr,
2249 static void dapm_free_path(struct snd_soc_dapm_path *path)
2251 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2252 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2253 list_del(&path->list_kcontrol);
2254 list_del(&path->list);
2258 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2260 struct snd_soc_dapm_path *p, *next_p;
2261 enum snd_soc_dapm_direction dir;
2265 * remove source and sink paths associated to this widget.
2266 * While removing the path, remove reference to it from both
2267 * source and sink widgets so that path is removed only once.
2269 snd_soc_dapm_for_each_direction(dir) {
2270 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2274 kfree(w->kcontrols);
2275 kfree_const(w->name);
2279 /* free all dapm widgets and resources */
2280 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2282 struct snd_soc_dapm_widget *w, *next_w;
2284 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2285 if (w->dapm != dapm)
2287 snd_soc_dapm_free_widget(w);
2291 static struct snd_soc_dapm_widget *dapm_find_widget(
2292 struct snd_soc_dapm_context *dapm, const char *pin,
2293 bool search_other_contexts)
2295 struct snd_soc_dapm_widget *w;
2296 struct snd_soc_dapm_widget *fallback = NULL;
2298 list_for_each_entry(w, &dapm->card->widgets, list) {
2299 if (!strcmp(w->name, pin)) {
2300 if (w->dapm == dapm)
2307 if (search_other_contexts)
2313 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2314 const char *pin, int status)
2316 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2318 dapm_assert_locked(dapm);
2321 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2325 if (w->connected != status) {
2326 dapm_mark_dirty(w, "pin configuration");
2327 dapm_widget_invalidate_input_paths(w);
2328 dapm_widget_invalidate_output_paths(w);
2331 w->connected = status;
2339 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2340 * @dapm: DAPM context
2342 * Walks all dapm audio paths and powers widgets according to their
2343 * stream or path usage.
2345 * Requires external locking.
2347 * Returns 0 for success.
2349 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2352 * Suppress early reports (eg, jacks syncing their state) to avoid
2353 * silly DAPM runs during card startup.
2355 if (!dapm->card || !dapm->card->instantiated)
2358 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2360 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2363 * snd_soc_dapm_sync - scan and power dapm paths
2364 * @dapm: DAPM context
2366 * Walks all dapm audio paths and powers widgets according to their
2367 * stream or path usage.
2369 * Returns 0 for success.
2371 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2375 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2376 ret = snd_soc_dapm_sync_unlocked(dapm);
2377 mutex_unlock(&dapm->card->dapm_mutex);
2380 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2383 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2384 * @w: The widget for which to update the flags
2386 * Some widgets have a dynamic category which depends on which neighbors they
2387 * are connected to. This function update the category for these widgets.
2389 * This function must be called whenever a path is added or removed to a widget.
2391 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2393 enum snd_soc_dapm_direction dir;
2394 struct snd_soc_dapm_path *p;
2398 case snd_soc_dapm_input:
2399 /* On a fully routed card a input is never a source */
2400 if (w->dapm->card->fully_routed)
2402 ep = SND_SOC_DAPM_EP_SOURCE;
2403 snd_soc_dapm_widget_for_each_source_path(w, p) {
2404 if (p->source->id == snd_soc_dapm_micbias ||
2405 p->source->id == snd_soc_dapm_mic ||
2406 p->source->id == snd_soc_dapm_line ||
2407 p->source->id == snd_soc_dapm_output) {
2413 case snd_soc_dapm_output:
2414 /* On a fully routed card a output is never a sink */
2415 if (w->dapm->card->fully_routed)
2417 ep = SND_SOC_DAPM_EP_SINK;
2418 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2419 if (p->sink->id == snd_soc_dapm_spk ||
2420 p->sink->id == snd_soc_dapm_hp ||
2421 p->sink->id == snd_soc_dapm_line ||
2422 p->sink->id == snd_soc_dapm_input) {
2428 case snd_soc_dapm_line:
2430 snd_soc_dapm_for_each_direction(dir) {
2431 if (!list_empty(&w->edges[dir]))
2432 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2442 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2443 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2444 const char *control)
2446 bool dynamic_source = false;
2447 bool dynamic_sink = false;
2452 switch (source->id) {
2453 case snd_soc_dapm_demux:
2454 dynamic_source = true;
2461 case snd_soc_dapm_mux:
2462 case snd_soc_dapm_switch:
2463 case snd_soc_dapm_mixer:
2464 case snd_soc_dapm_mixer_named_ctl:
2465 dynamic_sink = true;
2471 if (dynamic_source && dynamic_sink) {
2473 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2474 source->name, control, sink->name);
2476 } else if (!dynamic_source && !dynamic_sink) {
2478 "Control not supported for path %s -> [%s] -> %s\n",
2479 source->name, control, sink->name);
2486 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2487 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2488 const char *control,
2489 int (*connected)(struct snd_soc_dapm_widget *source,
2490 struct snd_soc_dapm_widget *sink))
2492 struct snd_soc_dapm_widget *widgets[2];
2493 enum snd_soc_dapm_direction dir;
2494 struct snd_soc_dapm_path *path;
2497 if (wsink->is_supply && !wsource->is_supply) {
2499 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2500 wsource->name, wsink->name);
2504 if (connected && !wsource->is_supply) {
2506 "connected() callback only supported for supply widgets (%s -> %s)\n",
2507 wsource->name, wsink->name);
2511 if (wsource->is_supply && control) {
2513 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2514 wsource->name, control, wsink->name);
2518 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2522 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2526 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2527 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2528 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2529 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2531 path->connected = connected;
2532 INIT_LIST_HEAD(&path->list);
2533 INIT_LIST_HEAD(&path->list_kcontrol);
2535 if (wsource->is_supply || wsink->is_supply)
2536 path->is_supply = 1;
2538 /* connect static paths */
2539 if (control == NULL) {
2542 switch (wsource->id) {
2543 case snd_soc_dapm_demux:
2544 ret = dapm_connect_mux(dapm, path, control, wsource);
2552 switch (wsink->id) {
2553 case snd_soc_dapm_mux:
2554 ret = dapm_connect_mux(dapm, path, control, wsink);
2558 case snd_soc_dapm_switch:
2559 case snd_soc_dapm_mixer:
2560 case snd_soc_dapm_mixer_named_ctl:
2561 ret = dapm_connect_mixer(dapm, path, control);
2570 list_add(&path->list, &dapm->card->paths);
2571 snd_soc_dapm_for_each_direction(dir)
2572 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2574 snd_soc_dapm_for_each_direction(dir) {
2575 dapm_update_widget_flags(widgets[dir]);
2576 dapm_mark_dirty(widgets[dir], "Route added");
2579 if (dapm->card->instantiated && path->connect)
2580 dapm_path_invalidate(path);
2588 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2589 const struct snd_soc_dapm_route *route)
2591 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2592 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2595 char prefixed_sink[80];
2596 char prefixed_source[80];
2600 prefix = soc_dapm_prefix(dapm);
2602 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2603 prefix, route->sink);
2604 sink = prefixed_sink;
2605 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2606 prefix, route->source);
2607 source = prefixed_source;
2610 source = route->source;
2613 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2614 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2616 if (wsink && wsource)
2620 * find src and dest widgets over all widgets but favor a widget from
2621 * current DAPM context
2623 list_for_each_entry(w, &dapm->card->widgets, list) {
2624 if (!wsink && !(strcmp(w->name, sink))) {
2626 if (w->dapm == dapm) {
2633 if (!wsource && !(strcmp(w->name, source))) {
2635 if (w->dapm == dapm) {
2642 /* use widget from another DAPM context if not found from this */
2648 if (wsource == NULL) {
2649 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2653 if (wsink == NULL) {
2654 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2660 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2661 dapm_wcache_update(&dapm->path_source_cache, wsource);
2663 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2670 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2671 source, route->control, sink);
2675 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2676 const struct snd_soc_dapm_route *route)
2678 struct snd_soc_dapm_widget *wsource, *wsink;
2679 struct snd_soc_dapm_path *path, *p;
2682 char prefixed_sink[80];
2683 char prefixed_source[80];
2686 if (route->control) {
2688 "ASoC: Removal of routes with controls not supported\n");
2692 prefix = soc_dapm_prefix(dapm);
2694 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2695 prefix, route->sink);
2696 sink = prefixed_sink;
2697 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2698 prefix, route->source);
2699 source = prefixed_source;
2702 source = route->source;
2706 list_for_each_entry(p, &dapm->card->paths, list) {
2707 if (strcmp(p->source->name, source) != 0)
2709 if (strcmp(p->sink->name, sink) != 0)
2716 wsource = path->source;
2719 dapm_mark_dirty(wsource, "Route removed");
2720 dapm_mark_dirty(wsink, "Route removed");
2722 dapm_path_invalidate(path);
2724 dapm_free_path(path);
2726 /* Update any path related flags */
2727 dapm_update_widget_flags(wsource);
2728 dapm_update_widget_flags(wsink);
2730 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
2738 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
2739 * @dapm: DAPM context
2740 * @route: audio routes
2741 * @num: number of routes
2743 * Connects 2 dapm widgets together via a named audio path. The sink is
2744 * the widget receiving the audio signal, whilst the source is the sender
2745 * of the audio signal.
2747 * Returns 0 for success else error. On error all resources can be freed
2748 * with a call to snd_soc_card_free().
2750 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
2751 const struct snd_soc_dapm_route *route, int num)
2755 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2756 for (i = 0; i < num; i++) {
2757 r = snd_soc_dapm_add_route(dapm, route);
2759 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
2761 route->control ? route->control : "direct",
2767 mutex_unlock(&dapm->card->dapm_mutex);
2771 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
2774 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
2775 * @dapm: DAPM context
2776 * @route: audio routes
2777 * @num: number of routes
2779 * Removes routes from the DAPM context.
2781 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
2782 const struct snd_soc_dapm_route *route, int num)
2786 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2787 for (i = 0; i < num; i++) {
2788 snd_soc_dapm_del_route(dapm, route);
2791 mutex_unlock(&dapm->card->dapm_mutex);
2795 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
2797 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
2798 const struct snd_soc_dapm_route *route)
2800 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
2803 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
2806 struct snd_soc_dapm_path *path;
2810 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
2816 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
2821 if (route->control || route->connected)
2822 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
2823 route->source, route->sink);
2825 snd_soc_dapm_widget_for_each_sink_path(source, path) {
2826 if (path->sink == sink) {
2833 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
2834 route->source, route->sink);
2836 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
2837 count, route->source, route->sink);
2843 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
2844 * @dapm: DAPM context
2845 * @route: audio routes
2846 * @num: number of routes
2848 * Mark existing routes matching those specified in the passed array
2849 * as being weak, meaning that they are ignored for the purpose of
2850 * power decisions. The main intended use case is for sidetone paths
2851 * which couple audio between other independent paths if they are both
2852 * active in order to make the combination work better at the user
2853 * level but which aren't intended to be "used".
2855 * Note that CODEC drivers should not use this as sidetone type paths
2856 * can frequently also be used as bypass paths.
2858 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
2859 const struct snd_soc_dapm_route *route, int num)
2864 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2865 for (i = 0; i < num; i++) {
2866 err = snd_soc_dapm_weak_route(dapm, route);
2871 mutex_unlock(&dapm->card->dapm_mutex);
2875 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
2878 * snd_soc_dapm_new_widgets - add new dapm widgets
2879 * @card: card to be checked for new dapm widgets
2881 * Checks the codec for any new dapm widgets and creates them if found.
2883 * Returns 0 for success.
2885 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
2887 struct snd_soc_dapm_widget *w;
2890 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
2892 list_for_each_entry(w, &card->widgets, list)
2897 if (w->num_kcontrols) {
2898 w->kcontrols = kzalloc(w->num_kcontrols *
2899 sizeof(struct snd_kcontrol *),
2901 if (!w->kcontrols) {
2902 mutex_unlock(&card->dapm_mutex);
2908 case snd_soc_dapm_switch:
2909 case snd_soc_dapm_mixer:
2910 case snd_soc_dapm_mixer_named_ctl:
2913 case snd_soc_dapm_mux:
2914 case snd_soc_dapm_demux:
2917 case snd_soc_dapm_pga:
2918 case snd_soc_dapm_out_drv:
2921 case snd_soc_dapm_dai_link:
2922 dapm_new_dai_link(w);
2928 /* Read the initial power state from the device */
2930 soc_dapm_read(w->dapm, w->reg, &val);
2931 val = val >> w->shift;
2933 if (val == w->on_val)
2939 dapm_mark_dirty(w, "new widget");
2940 dapm_debugfs_add_widget(w);
2943 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2944 mutex_unlock(&card->dapm_mutex);
2947 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
2950 * snd_soc_dapm_get_volsw - dapm mixer get callback
2951 * @kcontrol: mixer control
2952 * @ucontrol: control element information
2954 * Callback to get the value of a dapm mixer control.
2956 * Returns 0 for success.
2958 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
2959 struct snd_ctl_elem_value *ucontrol)
2961 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
2962 struct snd_soc_card *card = dapm->card;
2963 struct soc_mixer_control *mc =
2964 (struct soc_mixer_control *)kcontrol->private_value;
2966 unsigned int shift = mc->shift;
2968 unsigned int mask = (1 << fls(max)) - 1;
2969 unsigned int invert = mc->invert;
2973 if (snd_soc_volsw_is_stereo(mc))
2975 "ASoC: Control '%s' is stereo, which is not supported\n",
2978 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2979 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
2980 ret = soc_dapm_read(dapm, reg, &val);
2981 val = (val >> shift) & mask;
2983 val = dapm_kcontrol_get_value(kcontrol);
2985 mutex_unlock(&card->dapm_mutex);
2988 ucontrol->value.integer.value[0] = max - val;
2990 ucontrol->value.integer.value[0] = val;
2994 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
2997 * snd_soc_dapm_put_volsw - dapm mixer set callback
2998 * @kcontrol: mixer control
2999 * @ucontrol: control element information
3001 * Callback to set the value of a dapm mixer control.
3003 * Returns 0 for success.
3005 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3006 struct snd_ctl_elem_value *ucontrol)
3008 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3009 struct snd_soc_card *card = dapm->card;
3010 struct soc_mixer_control *mc =
3011 (struct soc_mixer_control *)kcontrol->private_value;
3013 unsigned int shift = mc->shift;
3015 unsigned int mask = (1 << fls(max)) - 1;
3016 unsigned int invert = mc->invert;
3018 int connect, change, reg_change = 0;
3019 struct snd_soc_dapm_update update;
3022 if (snd_soc_volsw_is_stereo(mc))
3024 "ASoC: Control '%s' is stereo, which is not supported\n",
3027 val = (ucontrol->value.integer.value[0] & mask);
3033 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3035 change = dapm_kcontrol_set_value(kcontrol, val);
3037 if (reg != SND_SOC_NOPM) {
3038 mask = mask << shift;
3041 reg_change = soc_dapm_test_bits(dapm, reg, mask, val);
3044 if (change || reg_change) {
3046 update.kcontrol = kcontrol;
3050 card->update = &update;
3052 change |= reg_change;
3054 ret = soc_dapm_mixer_update_power(card, kcontrol, connect);
3056 card->update = NULL;
3059 mutex_unlock(&card->dapm_mutex);
3062 soc_dpcm_runtime_update(card);
3066 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3069 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3070 * @kcontrol: mixer control
3071 * @ucontrol: control element information
3073 * Callback to get the value of a dapm enumerated double mixer control.
3075 * Returns 0 for success.
3077 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3078 struct snd_ctl_elem_value *ucontrol)
3080 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3081 struct snd_soc_card *card = dapm->card;
3082 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3083 unsigned int reg_val, val;
3085 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3086 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3087 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3089 mutex_unlock(&card->dapm_mutex);
3093 reg_val = dapm_kcontrol_get_value(kcontrol);
3095 mutex_unlock(&card->dapm_mutex);
3097 val = (reg_val >> e->shift_l) & e->mask;
3098 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3099 if (e->shift_l != e->shift_r) {
3100 val = (reg_val >> e->shift_r) & e->mask;
3101 val = snd_soc_enum_val_to_item(e, val);
3102 ucontrol->value.enumerated.item[1] = val;
3107 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3110 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3111 * @kcontrol: mixer control
3112 * @ucontrol: control element information
3114 * Callback to set the value of a dapm enumerated double mixer control.
3116 * Returns 0 for success.
3118 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3119 struct snd_ctl_elem_value *ucontrol)
3121 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3122 struct snd_soc_card *card = dapm->card;
3123 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3124 unsigned int *item = ucontrol->value.enumerated.item;
3125 unsigned int val, change, reg_change = 0;
3127 struct snd_soc_dapm_update update;
3130 if (item[0] >= e->items)
3133 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3134 mask = e->mask << e->shift_l;
3135 if (e->shift_l != e->shift_r) {
3136 if (item[1] > e->items)
3138 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_l;
3139 mask |= e->mask << e->shift_r;
3142 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3144 change = dapm_kcontrol_set_value(kcontrol, val);
3146 if (e->reg != SND_SOC_NOPM)
3147 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3149 if (change || reg_change) {
3151 update.kcontrol = kcontrol;
3152 update.reg = e->reg;
3155 card->update = &update;
3157 change |= reg_change;
3159 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3161 card->update = NULL;
3164 mutex_unlock(&card->dapm_mutex);
3167 soc_dpcm_runtime_update(card);
3171 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3174 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3176 * @kcontrol: mixer control
3177 * @uinfo: control element information
3179 * Callback to provide information about a pin switch control.
3181 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3182 struct snd_ctl_elem_info *uinfo)
3184 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3186 uinfo->value.integer.min = 0;
3187 uinfo->value.integer.max = 1;
3191 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3194 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3196 * @kcontrol: mixer control
3199 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3200 struct snd_ctl_elem_value *ucontrol)
3202 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3203 const char *pin = (const char *)kcontrol->private_value;
3205 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3207 ucontrol->value.integer.value[0] =
3208 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3210 mutex_unlock(&card->dapm_mutex);
3214 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3217 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3219 * @kcontrol: mixer control
3222 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3223 struct snd_ctl_elem_value *ucontrol)
3225 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3226 const char *pin = (const char *)kcontrol->private_value;
3228 if (ucontrol->value.integer.value[0])
3229 snd_soc_dapm_enable_pin(&card->dapm, pin);
3231 snd_soc_dapm_disable_pin(&card->dapm, pin);
3233 snd_soc_dapm_sync(&card->dapm);
3236 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3238 struct snd_soc_dapm_widget *
3239 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3240 const struct snd_soc_dapm_widget *widget)
3242 struct snd_soc_dapm_widget *w;
3244 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3245 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3248 "ASoC: Failed to create DAPM control %s\n",
3251 mutex_unlock(&dapm->card->dapm_mutex);
3255 struct snd_soc_dapm_widget *
3256 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3257 const struct snd_soc_dapm_widget *widget)
3259 enum snd_soc_dapm_direction dir;
3260 struct snd_soc_dapm_widget *w;
3264 if ((w = dapm_cnew_widget(widget)) == NULL)
3268 case snd_soc_dapm_regulator_supply:
3269 w->regulator = devm_regulator_get(dapm->dev, w->name);
3270 if (IS_ERR(w->regulator)) {
3271 ret = PTR_ERR(w->regulator);
3272 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3277 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3278 ret = regulator_allow_bypass(w->regulator, true);
3280 dev_warn(w->dapm->dev,
3281 "ASoC: Failed to bypass %s: %d\n",
3285 case snd_soc_dapm_clock_supply:
3286 #ifdef CONFIG_CLKDEV_LOOKUP
3287 w->clk = devm_clk_get(dapm->dev, w->name);
3288 if (IS_ERR(w->clk)) {
3289 ret = PTR_ERR(w->clk);
3290 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3302 prefix = soc_dapm_prefix(dapm);
3304 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3306 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3307 if (w->name == NULL) {
3313 case snd_soc_dapm_mic:
3314 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3315 w->power_check = dapm_generic_check_power;
3317 case snd_soc_dapm_input:
3318 if (!dapm->card->fully_routed)
3319 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3320 w->power_check = dapm_generic_check_power;
3322 case snd_soc_dapm_spk:
3323 case snd_soc_dapm_hp:
3324 w->is_ep = SND_SOC_DAPM_EP_SINK;
3325 w->power_check = dapm_generic_check_power;
3327 case snd_soc_dapm_output:
3328 if (!dapm->card->fully_routed)
3329 w->is_ep = SND_SOC_DAPM_EP_SINK;
3330 w->power_check = dapm_generic_check_power;
3332 case snd_soc_dapm_vmid:
3333 case snd_soc_dapm_siggen:
3334 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3335 w->power_check = dapm_always_on_check_power;
3337 case snd_soc_dapm_mux:
3338 case snd_soc_dapm_demux:
3339 case snd_soc_dapm_switch:
3340 case snd_soc_dapm_mixer:
3341 case snd_soc_dapm_mixer_named_ctl:
3342 case snd_soc_dapm_adc:
3343 case snd_soc_dapm_aif_out:
3344 case snd_soc_dapm_dac:
3345 case snd_soc_dapm_aif_in:
3346 case snd_soc_dapm_pga:
3347 case snd_soc_dapm_out_drv:
3348 case snd_soc_dapm_micbias:
3349 case snd_soc_dapm_line:
3350 case snd_soc_dapm_dai_link:
3351 case snd_soc_dapm_dai_out:
3352 case snd_soc_dapm_dai_in:
3353 w->power_check = dapm_generic_check_power;
3355 case snd_soc_dapm_supply:
3356 case snd_soc_dapm_regulator_supply:
3357 case snd_soc_dapm_clock_supply:
3358 case snd_soc_dapm_kcontrol:
3360 w->power_check = dapm_supply_check_power;
3363 w->power_check = dapm_always_on_check_power;
3368 INIT_LIST_HEAD(&w->list);
3369 INIT_LIST_HEAD(&w->dirty);
3370 list_add_tail(&w->list, &dapm->card->widgets);
3372 snd_soc_dapm_for_each_direction(dir) {
3373 INIT_LIST_HEAD(&w->edges[dir]);
3374 w->endpoints[dir] = -1;
3377 /* machine layer set ups unconnected pins and insertions */
3383 * snd_soc_dapm_new_controls - create new dapm controls
3384 * @dapm: DAPM context
3385 * @widget: widget array
3386 * @num: number of widgets
3388 * Creates new DAPM controls based upon the templates.
3390 * Returns 0 for success else error.
3392 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3393 const struct snd_soc_dapm_widget *widget,
3396 struct snd_soc_dapm_widget *w;
3400 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3401 for (i = 0; i < num; i++) {
3402 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3405 "ASoC: Failed to create DAPM control %s\n",
3412 mutex_unlock(&dapm->card->dapm_mutex);
3415 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3417 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3418 struct snd_kcontrol *kcontrol, int event)
3420 struct snd_soc_dapm_path *source_p, *sink_p;
3421 struct snd_soc_dai *source, *sink;
3422 const struct snd_soc_pcm_stream *config = w->params + w->params_select;
3423 struct snd_pcm_substream substream;
3424 struct snd_pcm_hw_params *params = NULL;
3428 if (WARN_ON(!config) ||
3429 WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3430 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3433 /* We only support a single source and sink, pick the first */
3434 source_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_OUT],
3435 struct snd_soc_dapm_path,
3436 list_node[SND_SOC_DAPM_DIR_OUT]);
3437 sink_p = list_first_entry(&w->edges[SND_SOC_DAPM_DIR_IN],
3438 struct snd_soc_dapm_path,
3439 list_node[SND_SOC_DAPM_DIR_IN]);
3441 source = source_p->source->priv;
3442 sink = sink_p->sink->priv;
3444 /* Be a little careful as we don't want to overflow the mask array */
3445 if (config->formats) {
3446 fmt = ffs(config->formats) - 1;
3448 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3453 /* Currently very limited parameter selection */
3454 params = kzalloc(sizeof(*params), GFP_KERNEL);
3459 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3461 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3463 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3466 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3467 = config->channels_min;
3468 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3469 = config->channels_max;
3471 memset(&substream, 0, sizeof(substream));
3474 case SND_SOC_DAPM_PRE_PMU:
3475 substream.stream = SNDRV_PCM_STREAM_CAPTURE;
3476 ret = soc_dai_hw_params(&substream, params, source);
3480 substream.stream = SNDRV_PCM_STREAM_PLAYBACK;
3481 ret = soc_dai_hw_params(&substream, params, sink);
3486 case SND_SOC_DAPM_POST_PMU:
3487 ret = snd_soc_dai_digital_mute(sink, 0,
3488 SNDRV_PCM_STREAM_PLAYBACK);
3489 if (ret != 0 && ret != -ENOTSUPP)
3490 dev_warn(sink->dev, "ASoC: Failed to unmute: %d\n", ret);
3494 case SND_SOC_DAPM_PRE_PMD:
3495 ret = snd_soc_dai_digital_mute(sink, 1,
3496 SNDRV_PCM_STREAM_PLAYBACK);
3497 if (ret != 0 && ret != -ENOTSUPP)
3498 dev_warn(sink->dev, "ASoC: Failed to mute: %d\n", ret);
3503 WARN(1, "Unknown event %d\n", event);
3512 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
3513 struct snd_ctl_elem_value *ucontrol)
3515 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3517 ucontrol->value.integer.value[0] = w->params_select;
3522 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
3523 struct snd_ctl_elem_value *ucontrol)
3525 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
3527 /* Can't change the config when widget is already powered */
3531 if (ucontrol->value.integer.value[0] == w->params_select)
3534 if (ucontrol->value.integer.value[0] >= w->num_params)
3537 w->params_select = ucontrol->value.integer.value[0];
3542 int snd_soc_dapm_new_pcm(struct snd_soc_card *card,
3543 const struct snd_soc_pcm_stream *params,
3544 unsigned int num_params,
3545 struct snd_soc_dapm_widget *source,
3546 struct snd_soc_dapm_widget *sink)
3548 struct snd_soc_dapm_widget template;
3549 struct snd_soc_dapm_widget *w;
3552 unsigned long private_value;
3553 const char **w_param_text;
3554 struct soc_enum w_param_enum[] = {
3555 SOC_ENUM_SINGLE(0, 0, 0, NULL),
3557 struct snd_kcontrol_new kcontrol_dai_link[] = {
3558 SOC_ENUM_EXT(NULL, w_param_enum[0],
3559 snd_soc_dapm_dai_link_get,
3560 snd_soc_dapm_dai_link_put),
3562 const struct snd_soc_pcm_stream *config = params;
3564 w_param_text = devm_kcalloc(card->dev, num_params,
3565 sizeof(char *), GFP_KERNEL);
3569 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
3570 source->name, sink->name);
3573 goto outfree_w_param;
3576 for (count = 0 ; count < num_params; count++) {
3577 if (!config->stream_name) {
3578 dev_warn(card->dapm.dev,
3579 "ASoC: anonymous config %d for dai link %s\n",
3581 w_param_text[count] =
3582 devm_kasprintf(card->dev, GFP_KERNEL,
3583 "Anonymous Configuration %d",
3585 if (!w_param_text[count]) {
3587 goto outfree_link_name;
3590 w_param_text[count] = devm_kmemdup(card->dev,
3591 config->stream_name,
3592 strlen(config->stream_name) + 1,
3594 if (!w_param_text[count]) {
3596 goto outfree_link_name;
3601 w_param_enum[0].items = num_params;
3602 w_param_enum[0].texts = w_param_text;
3604 memset(&template, 0, sizeof(template));
3605 template.reg = SND_SOC_NOPM;
3606 template.id = snd_soc_dapm_dai_link;
3607 template.name = link_name;
3608 template.event = snd_soc_dai_link_event;
3609 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
3610 SND_SOC_DAPM_PRE_PMD;
3611 template.num_kcontrols = 1;
3612 /* duplicate w_param_enum on heap so that memory persists */
3614 (unsigned long) devm_kmemdup(card->dev,
3615 (void *)(kcontrol_dai_link[0].private_value),
3616 sizeof(struct soc_enum), GFP_KERNEL);
3617 if (!private_value) {
3618 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3621 goto outfree_link_name;
3623 kcontrol_dai_link[0].private_value = private_value;
3624 /* duplicate kcontrol_dai_link on heap so that memory persists */
3625 template.kcontrol_news =
3626 devm_kmemdup(card->dev, &kcontrol_dai_link[0],
3627 sizeof(struct snd_kcontrol_new),
3629 if (!template.kcontrol_news) {
3630 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
3633 goto outfree_private_value;
3636 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
3638 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
3640 dev_err(card->dev, "ASoC: Failed to create %s widget\n",
3643 goto outfree_kcontrol_news;
3647 w->num_params = num_params;
3649 ret = snd_soc_dapm_add_path(&card->dapm, source, w, NULL, NULL);
3652 return snd_soc_dapm_add_path(&card->dapm, w, sink, NULL, NULL);
3655 devm_kfree(card->dev, w);
3656 outfree_kcontrol_news:
3657 devm_kfree(card->dev, (void *)template.kcontrol_news);
3658 outfree_private_value:
3659 devm_kfree(card->dev, (void *)private_value);
3661 devm_kfree(card->dev, link_name);
3663 for (count = 0 ; count < num_params; count++)
3664 devm_kfree(card->dev, (void *)w_param_text[count]);
3665 devm_kfree(card->dev, w_param_text);
3670 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
3671 struct snd_soc_dai *dai)
3673 struct snd_soc_dapm_widget template;
3674 struct snd_soc_dapm_widget *w;
3676 WARN_ON(dapm->dev != dai->dev);
3678 memset(&template, 0, sizeof(template));
3679 template.reg = SND_SOC_NOPM;
3681 if (dai->driver->playback.stream_name) {
3682 template.id = snd_soc_dapm_dai_in;
3683 template.name = dai->driver->playback.stream_name;
3684 template.sname = dai->driver->playback.stream_name;
3686 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3689 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3691 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3692 dai->driver->playback.stream_name);
3697 dai->playback_widget = w;
3700 if (dai->driver->capture.stream_name) {
3701 template.id = snd_soc_dapm_dai_out;
3702 template.name = dai->driver->capture.stream_name;
3703 template.sname = dai->driver->capture.stream_name;
3705 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
3708 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
3710 dev_err(dapm->dev, "ASoC: Failed to create %s widget\n",
3711 dai->driver->capture.stream_name);
3716 dai->capture_widget = w;
3722 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
3724 struct snd_soc_dapm_widget *dai_w, *w;
3725 struct snd_soc_dapm_widget *src, *sink;
3726 struct snd_soc_dai *dai;
3728 /* For each DAI widget... */
3729 list_for_each_entry(dai_w, &card->widgets, list) {
3730 switch (dai_w->id) {
3731 case snd_soc_dapm_dai_in:
3732 case snd_soc_dapm_dai_out:
3740 /* ...find all widgets with the same stream and link them */
3741 list_for_each_entry(w, &card->widgets, list) {
3742 if (w->dapm != dai_w->dapm)
3746 case snd_soc_dapm_dai_in:
3747 case snd_soc_dapm_dai_out:
3753 if (!w->sname || !strstr(w->sname, dai_w->sname))
3756 if (dai_w->id == snd_soc_dapm_dai_in) {
3763 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
3764 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
3771 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
3772 struct snd_soc_pcm_runtime *rtd)
3774 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
3775 struct snd_soc_dapm_widget *sink, *source;
3778 for (i = 0; i < rtd->num_codecs; i++) {
3779 struct snd_soc_dai *codec_dai = rtd->codec_dais[i];
3781 /* connect BE DAI playback if widgets are valid */
3782 if (codec_dai->playback_widget && cpu_dai->playback_widget) {
3783 source = cpu_dai->playback_widget;
3784 sink = codec_dai->playback_widget;
3785 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3786 cpu_dai->component->name, source->name,
3787 codec_dai->component->name, sink->name);
3789 snd_soc_dapm_add_path(&card->dapm, source, sink,
3793 /* connect BE DAI capture if widgets are valid */
3794 if (codec_dai->capture_widget && cpu_dai->capture_widget) {
3795 source = codec_dai->capture_widget;
3796 sink = cpu_dai->capture_widget;
3797 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
3798 codec_dai->component->name, source->name,
3799 cpu_dai->component->name, sink->name);
3801 snd_soc_dapm_add_path(&card->dapm, source, sink,
3807 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
3810 struct snd_soc_dapm_widget *w;
3813 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
3814 w = dai->playback_widget;
3816 w = dai->capture_widget;
3819 dapm_mark_dirty(w, "stream event");
3821 if (w->id == snd_soc_dapm_dai_in) {
3822 ep = SND_SOC_DAPM_EP_SOURCE;
3823 dapm_widget_invalidate_input_paths(w);
3825 ep = SND_SOC_DAPM_EP_SINK;
3826 dapm_widget_invalidate_output_paths(w);
3830 case SND_SOC_DAPM_STREAM_START:
3834 case SND_SOC_DAPM_STREAM_STOP:
3838 case SND_SOC_DAPM_STREAM_SUSPEND:
3839 case SND_SOC_DAPM_STREAM_RESUME:
3840 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
3841 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
3847 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
3849 struct snd_soc_pcm_runtime *rtd = card->rtd;
3852 /* for each BE DAI link... */
3853 for (i = 0; i < card->num_rtd; i++) {
3854 rtd = &card->rtd[i];
3857 * dynamic FE links have no fixed DAI mapping.
3858 * CODEC<->CODEC links have no direct connection.
3860 if (rtd->dai_link->dynamic || rtd->dai_link->params)
3863 dapm_connect_dai_link_widgets(card, rtd);
3867 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3872 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
3873 for (i = 0; i < rtd->num_codecs; i++)
3874 soc_dapm_dai_stream_event(rtd->codec_dais[i], stream, event);
3876 dapm_power_widgets(rtd->card, event);
3880 * snd_soc_dapm_stream_event - send a stream event to the dapm core
3881 * @rtd: PCM runtime data
3882 * @stream: stream name
3883 * @event: stream event
3885 * Sends a stream event to the dapm core. The core then makes any
3886 * necessary widget power changes.
3888 * Returns 0 for success else error.
3890 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
3893 struct snd_soc_card *card = rtd->card;
3895 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3896 soc_dapm_stream_event(rtd, stream, event);
3897 mutex_unlock(&card->dapm_mutex);
3901 * snd_soc_dapm_enable_pin_unlocked - enable pin.
3902 * @dapm: DAPM context
3905 * Enables input/output pin and its parents or children widgets iff there is
3906 * a valid audio route and active audio stream.
3908 * Requires external locking.
3910 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3911 * do any widget power switching.
3913 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3916 return snd_soc_dapm_set_pin(dapm, pin, 1);
3918 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
3921 * snd_soc_dapm_enable_pin - enable pin.
3922 * @dapm: DAPM context
3925 * Enables input/output pin and its parents or children widgets iff there is
3926 * a valid audio route and active audio stream.
3928 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3929 * do any widget power switching.
3931 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
3935 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3937 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
3939 mutex_unlock(&dapm->card->dapm_mutex);
3943 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
3946 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
3947 * @dapm: DAPM context
3950 * Enables input/output pin regardless of any other state. This is
3951 * intended for use with microphone bias supplies used in microphone
3954 * Requires external locking.
3956 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3957 * do any widget power switching.
3959 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
3962 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
3965 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
3969 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
3970 if (!w->connected) {
3972 * w->force does not affect the number of input or output paths,
3973 * so we only have to recheck if w->connected is changed
3975 dapm_widget_invalidate_input_paths(w);
3976 dapm_widget_invalidate_output_paths(w);
3980 dapm_mark_dirty(w, "force enable");
3984 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
3987 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
3988 * @dapm: DAPM context
3991 * Enables input/output pin regardless of any other state. This is
3992 * intended for use with microphone bias supplies used in microphone
3995 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
3996 * do any widget power switching.
3998 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4003 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4005 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4007 mutex_unlock(&dapm->card->dapm_mutex);
4011 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4014 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4015 * @dapm: DAPM context
4018 * Disables input/output pin and its parents or children widgets.
4020 * Requires external locking.
4022 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4023 * do any widget power switching.
4025 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4028 return snd_soc_dapm_set_pin(dapm, pin, 0);
4030 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4033 * snd_soc_dapm_disable_pin - disable pin.
4034 * @dapm: DAPM context
4037 * Disables input/output pin and its parents or children widgets.
4039 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4040 * do any widget power switching.
4042 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4047 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4049 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4051 mutex_unlock(&dapm->card->dapm_mutex);
4055 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4058 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4059 * @dapm: DAPM context
4062 * Marks the specified pin as being not connected, disabling it along
4063 * any parent or child widgets. At present this is identical to
4064 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4065 * additional things such as disabling controls which only affect
4066 * paths through the pin.
4068 * Requires external locking.
4070 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4071 * do any widget power switching.
4073 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4076 return snd_soc_dapm_set_pin(dapm, pin, 0);
4078 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4081 * snd_soc_dapm_nc_pin - permanently disable pin.
4082 * @dapm: DAPM context
4085 * Marks the specified pin as being not connected, disabling it along
4086 * any parent or child widgets. At present this is identical to
4087 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4088 * additional things such as disabling controls which only affect
4089 * paths through the pin.
4091 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4092 * do any widget power switching.
4094 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4098 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4100 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4102 mutex_unlock(&dapm->card->dapm_mutex);
4106 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4109 * snd_soc_dapm_get_pin_status - get audio pin status
4110 * @dapm: DAPM context
4111 * @pin: audio signal pin endpoint (or start point)
4113 * Get audio pin status - connected or disconnected.
4115 * Returns 1 for connected otherwise 0.
4117 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4120 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4123 return w->connected;
4127 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4130 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4131 * @dapm: DAPM context
4132 * @pin: audio signal pin endpoint (or start point)
4134 * Mark the given endpoint or pin as ignoring suspend. When the
4135 * system is disabled a path between two endpoints flagged as ignoring
4136 * suspend will not be disabled. The path must already be enabled via
4137 * normal means at suspend time, it will not be turned on if it was not
4140 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4143 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4146 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4150 w->ignore_suspend = 1;
4154 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4157 * snd_soc_dapm_free - free dapm resources
4158 * @dapm: DAPM context
4160 * Free all dapm widgets and resources.
4162 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4164 dapm_debugfs_cleanup(dapm);
4165 dapm_free_widgets(dapm);
4166 list_del(&dapm->list);
4168 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4170 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4172 struct snd_soc_card *card = dapm->card;
4173 struct snd_soc_dapm_widget *w;
4174 LIST_HEAD(down_list);
4177 mutex_lock(&card->dapm_mutex);
4179 list_for_each_entry(w, &dapm->card->widgets, list) {
4180 if (w->dapm != dapm)
4183 dapm_seq_insert(w, &down_list, false);
4189 /* If there were no widgets to power down we're already in
4193 if (dapm->bias_level == SND_SOC_BIAS_ON)
4194 snd_soc_dapm_set_bias_level(dapm,
4195 SND_SOC_BIAS_PREPARE);
4196 dapm_seq_run(card, &down_list, 0, false);
4197 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4198 snd_soc_dapm_set_bias_level(dapm,
4199 SND_SOC_BIAS_STANDBY);
4202 mutex_unlock(&card->dapm_mutex);
4206 * snd_soc_dapm_shutdown - callback for system shutdown
4208 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4210 struct snd_soc_dapm_context *dapm;
4212 list_for_each_entry(dapm, &card->dapm_list, list) {
4213 if (dapm != &card->dapm) {
4214 soc_dapm_shutdown_dapm(dapm);
4215 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4216 snd_soc_dapm_set_bias_level(dapm,
4221 soc_dapm_shutdown_dapm(&card->dapm);
4222 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4223 snd_soc_dapm_set_bias_level(&card->dapm,
4227 /* Module information */
4228 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4229 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4230 MODULE_LICENSE("GPL");