1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
9 // o Changes power status of internal codec blocks depending on the
10 // dynamic configuration of codec internal audio paths and active
12 // o Platform power domain - can support external components i.e. amps and
13 // mic/headphone insertion events.
14 // o Automatic Mic Bias support
15 // o Jack insertion power event initiation - e.g. hp insertion will enable
17 // o Delayed power down of audio subsystem to reduce pops between a quick
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/async.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/platform_device.h>
27 #include <linux/jiffies.h>
28 #include <linux/debugfs.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/pinctrl/consumer.h>
32 #include <linux/clk.h>
33 #include <linux/slab.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/initval.h>
40 #include <trace/events/asoc.h>
42 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
44 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
47 #define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
51 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
52 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
54 int (*connected)(struct snd_soc_dapm_widget *source,
55 struct snd_soc_dapm_widget *sink));
57 struct snd_soc_dapm_widget *
58 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
59 const struct snd_soc_dapm_widget *widget);
61 struct snd_soc_dapm_widget *
62 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
63 const struct snd_soc_dapm_widget *widget);
65 /* dapm power sequences - make this per codec in the future */
66 static int dapm_up_seq[] = {
67 [snd_soc_dapm_pre] = 1,
68 [snd_soc_dapm_regulator_supply] = 2,
69 [snd_soc_dapm_pinctrl] = 2,
70 [snd_soc_dapm_clock_supply] = 2,
71 [snd_soc_dapm_supply] = 3,
72 [snd_soc_dapm_micbias] = 4,
73 [snd_soc_dapm_vmid] = 4,
74 [snd_soc_dapm_dai_link] = 3,
75 [snd_soc_dapm_dai_in] = 5,
76 [snd_soc_dapm_dai_out] = 5,
77 [snd_soc_dapm_aif_in] = 5,
78 [snd_soc_dapm_aif_out] = 5,
79 [snd_soc_dapm_mic] = 6,
80 [snd_soc_dapm_siggen] = 6,
81 [snd_soc_dapm_input] = 6,
82 [snd_soc_dapm_output] = 6,
83 [snd_soc_dapm_mux] = 7,
84 [snd_soc_dapm_demux] = 7,
85 [snd_soc_dapm_dac] = 8,
86 [snd_soc_dapm_switch] = 9,
87 [snd_soc_dapm_mixer] = 9,
88 [snd_soc_dapm_mixer_named_ctl] = 9,
89 [snd_soc_dapm_pga] = 10,
90 [snd_soc_dapm_buffer] = 10,
91 [snd_soc_dapm_scheduler] = 10,
92 [snd_soc_dapm_effect] = 10,
93 [snd_soc_dapm_src] = 10,
94 [snd_soc_dapm_asrc] = 10,
95 [snd_soc_dapm_encoder] = 10,
96 [snd_soc_dapm_decoder] = 10,
97 [snd_soc_dapm_adc] = 11,
98 [snd_soc_dapm_out_drv] = 12,
99 [snd_soc_dapm_hp] = 12,
100 [snd_soc_dapm_spk] = 12,
101 [snd_soc_dapm_line] = 12,
102 [snd_soc_dapm_sink] = 12,
103 [snd_soc_dapm_kcontrol] = 13,
104 [snd_soc_dapm_post] = 14,
107 static int dapm_down_seq[] = {
108 [snd_soc_dapm_pre] = 1,
109 [snd_soc_dapm_kcontrol] = 2,
110 [snd_soc_dapm_adc] = 3,
111 [snd_soc_dapm_hp] = 4,
112 [snd_soc_dapm_spk] = 4,
113 [snd_soc_dapm_line] = 4,
114 [snd_soc_dapm_out_drv] = 4,
115 [snd_soc_dapm_sink] = 4,
116 [snd_soc_dapm_pga] = 5,
117 [snd_soc_dapm_buffer] = 5,
118 [snd_soc_dapm_scheduler] = 5,
119 [snd_soc_dapm_effect] = 5,
120 [snd_soc_dapm_src] = 5,
121 [snd_soc_dapm_asrc] = 5,
122 [snd_soc_dapm_encoder] = 5,
123 [snd_soc_dapm_decoder] = 5,
124 [snd_soc_dapm_switch] = 6,
125 [snd_soc_dapm_mixer_named_ctl] = 6,
126 [snd_soc_dapm_mixer] = 6,
127 [snd_soc_dapm_dac] = 7,
128 [snd_soc_dapm_mic] = 8,
129 [snd_soc_dapm_siggen] = 8,
130 [snd_soc_dapm_input] = 8,
131 [snd_soc_dapm_output] = 8,
132 [snd_soc_dapm_micbias] = 9,
133 [snd_soc_dapm_vmid] = 9,
134 [snd_soc_dapm_mux] = 10,
135 [snd_soc_dapm_demux] = 10,
136 [snd_soc_dapm_aif_in] = 11,
137 [snd_soc_dapm_aif_out] = 11,
138 [snd_soc_dapm_dai_in] = 11,
139 [snd_soc_dapm_dai_out] = 11,
140 [snd_soc_dapm_dai_link] = 12,
141 [snd_soc_dapm_supply] = 13,
142 [snd_soc_dapm_clock_supply] = 14,
143 [snd_soc_dapm_pinctrl] = 14,
144 [snd_soc_dapm_regulator_supply] = 14,
145 [snd_soc_dapm_post] = 15,
148 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
150 if (dapm->card && dapm->card->instantiated)
151 lockdep_assert_held(&dapm->card->dapm_mutex);
154 static void pop_wait(u32 pop_time)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
161 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
169 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
174 vsnprintf(buf, PAGE_SIZE, fmt, args);
175 dev_info(dev, "%s", buf);
181 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
183 return !list_empty(&w->dirty);
186 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
188 dapm_assert_locked(w->dapm);
190 if (!dapm_dirty_widget(w)) {
191 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
193 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
198 * Common implementation for dapm_widget_invalidate_input_paths() and
199 * dapm_widget_invalidate_output_paths(). The function is inlined since the
200 * combined size of the two specialized functions is only marginally larger then
201 * the size of the generic function and at the same time the fast path of the
202 * specialized functions is significantly smaller than the generic function.
204 static __always_inline void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
207 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
208 struct snd_soc_dapm_widget *node;
209 struct snd_soc_dapm_path *p;
212 dapm_assert_locked(w->dapm);
214 if (w->endpoints[dir] == -1)
217 list_add_tail(&w->work_list, &list);
218 w->endpoints[dir] = -1;
220 list_for_each_entry(w, &list, work_list) {
221 snd_soc_dapm_widget_for_each_path(w, dir, p) {
222 if (p->is_supply || p->weak || !p->connect)
224 node = p->node[rdir];
225 if (node->endpoints[dir] != -1) {
226 node->endpoints[dir] = -1;
227 list_add_tail(&node->work_list, &list);
234 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
236 * @w: The widget for which to invalidate the cached number of input paths
238 * Resets the cached number of inputs for the specified widget and all widgets
239 * that can be reached via outcoming paths from the widget.
241 * This function must be called if the number of output paths for a widget might
242 * have changed. E.g. if the source state of a widget changes or a path is added
243 * or activated with the widget as the sink.
245 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
247 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
251 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
253 * @w: The widget for which to invalidate the cached number of output paths
255 * Resets the cached number of outputs for the specified widget and all widgets
256 * that can be reached via incoming paths from the widget.
258 * This function must be called if the number of output paths for a widget might
259 * have changed. E.g. if the sink state of a widget changes or a path is added
260 * or activated with the widget as the source.
262 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
264 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
268 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
269 * for the widgets connected to a path
270 * @p: The path to invalidate
272 * Resets the cached number of inputs for the sink of the path and the cached
273 * number of outputs for the source of the path.
275 * This function must be called when a path is added, removed or the connected
278 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
281 * Weak paths or supply paths do not influence the number of input or
282 * output paths of their neighbors.
284 if (p->weak || p->is_supply)
288 * The number of connected endpoints is the sum of the number of
289 * connected endpoints of all neighbors. If a node with 0 connected
290 * endpoints is either connected or disconnected that sum won't change,
291 * so there is no need to re-check the path.
293 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
294 dapm_widget_invalidate_input_paths(p->sink);
295 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
296 dapm_widget_invalidate_output_paths(p->source);
299 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
301 struct snd_soc_dapm_widget *w;
303 mutex_lock(&card->dapm_mutex);
305 list_for_each_entry(w, &card->widgets, list) {
307 dapm_mark_dirty(w, "Rechecking endpoints");
308 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
309 dapm_widget_invalidate_output_paths(w);
310 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
311 dapm_widget_invalidate_input_paths(w);
315 mutex_unlock(&card->dapm_mutex);
317 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
319 /* create a new dapm widget */
320 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
321 const struct snd_soc_dapm_widget *_widget)
323 struct snd_soc_dapm_widget *w;
325 w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
330 * w->name is duplicated in caller, but w->sname isn't.
331 * Duplicate it here if defined
333 if (_widget->sname) {
334 w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
343 struct dapm_kcontrol_data {
345 struct snd_soc_dapm_widget *widget;
346 struct list_head paths;
347 struct snd_soc_dapm_widget_list *wlist;
350 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
351 struct snd_kcontrol *kcontrol, const char *ctrl_name)
353 struct dapm_kcontrol_data *data;
354 struct soc_mixer_control *mc;
359 data = kzalloc(sizeof(*data), GFP_KERNEL);
363 INIT_LIST_HEAD(&data->paths);
365 switch (widget->id) {
366 case snd_soc_dapm_switch:
367 case snd_soc_dapm_mixer:
368 case snd_soc_dapm_mixer_named_ctl:
369 mc = (struct soc_mixer_control *)kcontrol->private_value;
371 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
372 dev_warn(widget->dapm->dev,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
376 if (mc->autodisable) {
377 struct snd_soc_dapm_widget template;
379 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
386 memset(&template, 0, sizeof(template));
387 template.reg = mc->reg;
388 template.mask = (1 << fls(mc->max)) - 1;
389 template.shift = mc->shift;
391 template.off_val = mc->max;
393 template.off_val = 0;
394 template.on_val = template.off_val;
395 template.id = snd_soc_dapm_kcontrol;
396 template.name = name;
398 data->value = template.on_val;
401 snd_soc_dapm_new_control_unlocked(widget->dapm,
404 if (IS_ERR(data->widget)) {
405 ret = PTR_ERR(data->widget);
410 case snd_soc_dapm_demux:
411 case snd_soc_dapm_mux:
412 e = (struct soc_enum *)kcontrol->private_value;
414 if (e->autodisable) {
415 struct snd_soc_dapm_widget template;
417 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
424 memset(&template, 0, sizeof(template));
425 template.reg = e->reg;
426 template.mask = e->mask;
427 template.shift = e->shift_l;
428 template.off_val = snd_soc_enum_item_to_val(e, 0);
429 template.on_val = template.off_val;
430 template.id = snd_soc_dapm_kcontrol;
431 template.name = name;
433 data->value = template.on_val;
435 data->widget = snd_soc_dapm_new_control_unlocked(
436 widget->dapm, &template);
438 if (IS_ERR(data->widget)) {
439 ret = PTR_ERR(data->widget);
443 snd_soc_dapm_add_path(widget->dapm, data->widget,
451 kcontrol->private_data = data;
460 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
462 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
464 list_del(&data->paths);
469 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol *kcontrol)
472 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
477 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
478 struct snd_soc_dapm_widget *widget)
480 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
481 struct snd_soc_dapm_widget_list *new_wlist;
485 n = data->wlist->num_widgets + 1;
489 new_wlist = krealloc(data->wlist,
490 struct_size(new_wlist, widgets, n),
495 new_wlist->widgets[n - 1] = widget;
496 new_wlist->num_widgets = n;
498 data->wlist = new_wlist;
503 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
504 struct snd_soc_dapm_path *path)
506 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
508 list_add_tail(&path->list_kcontrol, &data->paths);
511 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
513 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
518 return data->widget->power;
521 static struct list_head *dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol *kcontrol)
524 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
529 #define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
533 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
535 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
539 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
541 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
544 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
546 if (data->value == value)
550 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
551 case snd_soc_dapm_switch:
552 case snd_soc_dapm_mixer:
553 case snd_soc_dapm_mixer_named_ctl:
554 data->widget->on_val = value & data->widget->mask;
556 case snd_soc_dapm_demux:
557 case snd_soc_dapm_mux:
558 data->widget->on_val = value >> data->widget->shift;
561 data->widget->on_val = value;
572 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
574 * @kcontrol: The kcontrol
576 struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol *kcontrol)
579 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
581 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
584 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
586 * @kcontrol: The kcontrol
588 * Note: This function must only be used on kcontrols that are known to have
589 * been registered for a CODEC. Otherwise the behaviour is undefined.
591 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol *kcontrol)
594 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
596 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
598 static void dapm_reset(struct snd_soc_card *card)
600 struct snd_soc_dapm_widget *w;
602 lockdep_assert_held(&card->dapm_mutex);
604 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
606 list_for_each_entry(w, &card->widgets, list) {
607 w->new_power = w->power;
608 w->power_checked = false;
612 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
614 if (!dapm->component)
616 return dapm->component->name_prefix;
619 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
622 if (!dapm->component)
624 return snd_soc_component_read(dapm->component, reg, value);
627 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
628 int reg, unsigned int mask, unsigned int value)
630 if (!dapm->component)
632 return snd_soc_component_update_bits(dapm->component, reg,
636 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
637 int reg, unsigned int mask, unsigned int value)
639 if (!dapm->component)
641 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
644 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
647 snd_soc_component_async_complete(dapm->component);
650 static struct snd_soc_dapm_widget *
651 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
653 struct snd_soc_dapm_widget *w = wcache->widget;
654 struct list_head *wlist;
659 wlist = &w->dapm->card->widgets;
661 list_for_each_entry_from(w, wlist, list) {
662 if (!strcmp(name, w->name))
673 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
674 struct snd_soc_dapm_widget *w)
680 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
681 * @dapm: The DAPM context for which to set the level
682 * @level: The level to set
684 * Forces the DAPM bias level to a specific state. It will call the bias level
685 * callback of DAPM context with the specified level. This will even happen if
686 * the context is already at the same level. Furthermore it will not go through
687 * the normal bias level sequencing, meaning any intermediate states between the
688 * current and the target state will not be entered.
690 * Note that the change in bias level is only temporary and the next time
691 * snd_soc_dapm_sync() is called the state will be set to the level as
692 * determined by the DAPM core. The function is mainly intended to be used to
693 * used during probe or resume from suspend to power up the device so
694 * initialization can be done, before the DAPM core takes over.
696 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
697 enum snd_soc_bias_level level)
702 ret = snd_soc_component_set_bias_level(dapm->component, level);
705 dapm->bias_level = level;
709 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
712 * snd_soc_dapm_set_bias_level - set the bias level for the system
713 * @dapm: DAPM context
714 * @level: level to configure
716 * Configure the bias (power) levels for the SoC audio device.
718 * Returns 0 for success else error.
720 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
721 enum snd_soc_bias_level level)
723 struct snd_soc_card *card = dapm->card;
726 trace_snd_soc_bias_level_start(card, level);
728 if (card && card->set_bias_level)
729 ret = card->set_bias_level(card, dapm, level);
733 if (!card || dapm != &card->dapm)
734 ret = snd_soc_dapm_force_bias_level(dapm, level);
739 if (card && card->set_bias_level_post)
740 ret = card->set_bias_level_post(card, dapm, level);
742 trace_snd_soc_bias_level_done(card, level);
747 /* connect mux widget to its interconnecting audio paths */
748 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
749 struct snd_soc_dapm_path *path, const char *control_name,
750 struct snd_soc_dapm_widget *w)
752 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
753 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
754 unsigned int val, item;
757 if (e->reg != SND_SOC_NOPM) {
758 soc_dapm_read(dapm, e->reg, &val);
759 val = (val >> e->shift_l) & e->mask;
760 item = snd_soc_enum_val_to_item(e, val);
762 /* since a virtual mux has no backing registers to
763 * decide which path to connect, it will try to match
764 * with the first enumeration. This is to ensure
765 * that the default mux choice (the first) will be
766 * correctly powered up during initialization.
771 i = match_string(e->texts, e->items, control_name);
775 path->name = e->texts[i];
776 path->connect = (i == item);
781 /* set up initial codec paths */
782 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
785 struct soc_mixer_control *mc = (struct soc_mixer_control *)
786 p->sink->kcontrol_news[i].private_value;
787 unsigned int reg = mc->reg;
788 unsigned int shift = mc->shift;
789 unsigned int max = mc->max;
790 unsigned int mask = (1 << fls(max)) - 1;
791 unsigned int invert = mc->invert;
794 if (reg != SND_SOC_NOPM) {
795 soc_dapm_read(p->sink->dapm, reg, &val);
797 * The nth_path argument allows this function to know
798 * which path of a kcontrol it is setting the initial
799 * status for. Ideally this would support any number
800 * of paths and channels. But since kcontrols only come
801 * in mono and stereo variants, we are limited to 2
804 * The following code assumes for stereo controls the
805 * first path is the left channel, and all remaining
806 * paths are the right channel.
808 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
810 soc_dapm_read(p->sink->dapm, mc->rreg, &val);
811 val = (val >> mc->rshift) & mask;
813 val = (val >> shift) & mask;
819 /* since a virtual mixer has no backing registers to
820 * decide which path to connect, it will try to match
821 * with initial state. This is to ensure
822 * that the default mixer choice will be
823 * correctly powered up during initialization.
829 /* connect mixer widget to its interconnecting audio paths */
830 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
831 struct snd_soc_dapm_path *path, const char *control_name)
835 /* search for mixer kcontrol */
836 for (i = 0; i < path->sink->num_kcontrols; i++) {
837 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
838 path->name = path->sink->kcontrol_news[i].name;
839 dapm_set_mixer_path_status(path, i, nth_path++);
846 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
847 struct snd_soc_dapm_widget *kcontrolw,
848 const struct snd_kcontrol_new *kcontrol_new,
849 struct snd_kcontrol **kcontrol)
851 struct snd_soc_dapm_widget *w;
856 list_for_each_entry(w, &dapm->card->widgets, list) {
857 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
859 for (i = 0; i < w->num_kcontrols; i++) {
860 if (&w->kcontrol_news[i] == kcontrol_new) {
862 *kcontrol = w->kcontrols[i];
872 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
873 * create it. Either way, add the widget into the control's widget list
875 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
878 struct snd_soc_dapm_context *dapm = w->dapm;
879 struct snd_card *card = dapm->card->snd_card;
883 struct snd_kcontrol *kcontrol;
884 bool wname_in_long_name, kcname_in_long_name;
885 char *long_name = NULL;
889 prefix = soc_dapm_prefix(dapm);
891 prefix_len = strlen(prefix) + 1;
895 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
900 wname_in_long_name = false;
901 kcname_in_long_name = true;
904 case snd_soc_dapm_switch:
905 case snd_soc_dapm_mixer:
906 case snd_soc_dapm_pga:
907 case snd_soc_dapm_effect:
908 case snd_soc_dapm_out_drv:
909 wname_in_long_name = true;
910 kcname_in_long_name = true;
912 case snd_soc_dapm_mixer_named_ctl:
913 wname_in_long_name = false;
914 kcname_in_long_name = true;
916 case snd_soc_dapm_demux:
917 case snd_soc_dapm_mux:
918 wname_in_long_name = true;
919 kcname_in_long_name = false;
926 if (wname_in_long_name && kcname_in_long_name) {
928 * The control will get a prefix from the control
929 * creation process but we're also using the same
930 * prefix for widgets so cut the prefix off the
931 * front of the widget name.
933 long_name = kasprintf(GFP_KERNEL, "%s %s",
934 w->name + prefix_len,
935 w->kcontrol_news[kci].name);
936 if (long_name == NULL)
940 } else if (wname_in_long_name) {
942 name = w->name + prefix_len;
945 name = w->kcontrol_news[kci].name;
948 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
955 kcontrol->private_free = dapm_kcontrol_free;
957 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
959 snd_ctl_free_one(kcontrol);
963 ret = snd_ctl_add(card, kcontrol);
966 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
972 ret = dapm_kcontrol_add_widget(kcontrol, w);
974 w->kcontrols[kci] = kcontrol;
982 /* create new dapm mixer control */
983 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
986 struct snd_soc_dapm_path *path;
987 struct dapm_kcontrol_data *data;
990 for (i = 0; i < w->num_kcontrols; i++) {
992 snd_soc_dapm_widget_for_each_source_path(w, path) {
993 /* mixer/mux paths name must match control name */
994 if (path->name != (char *)w->kcontrol_news[i].name)
997 if (!w->kcontrols[i]) {
998 ret = dapm_create_or_share_kcontrol(w, i);
1003 dapm_kcontrol_add_path(w->kcontrols[i], path);
1005 data = snd_kcontrol_chip(w->kcontrols[i]);
1007 snd_soc_dapm_add_path(data->widget->dapm,
1017 /* create new dapm mux control */
1018 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1020 struct snd_soc_dapm_context *dapm = w->dapm;
1021 enum snd_soc_dapm_direction dir;
1022 struct snd_soc_dapm_path *path;
1027 case snd_soc_dapm_mux:
1028 dir = SND_SOC_DAPM_DIR_OUT;
1031 case snd_soc_dapm_demux:
1032 dir = SND_SOC_DAPM_DIR_IN;
1039 if (w->num_kcontrols != 1) {
1041 "ASoC: %s %s has incorrect number of controls\n", type,
1046 if (list_empty(&w->edges[dir])) {
1047 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1051 ret = dapm_create_or_share_kcontrol(w, 0);
1055 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1057 dapm_kcontrol_add_path(w->kcontrols[0], path);
1063 /* create new dapm volume control */
1064 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1068 for (i = 0; i < w->num_kcontrols; i++) {
1069 ret = dapm_create_or_share_kcontrol(w, i);
1077 /* create new dapm dai link control */
1078 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1081 struct snd_kcontrol *kcontrol;
1082 struct snd_soc_dapm_context *dapm = w->dapm;
1083 struct snd_card *card = dapm->card->snd_card;
1084 struct snd_soc_pcm_runtime *rtd = w->priv;
1086 /* create control for links with > 1 config */
1087 if (rtd->dai_link->num_params <= 1)
1091 for (i = 0; i < w->num_kcontrols; i++) {
1092 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1094 ret = snd_ctl_add(card, kcontrol);
1097 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1098 w->name, w->kcontrol_news[i].name, ret);
1101 kcontrol->private_data = w;
1102 w->kcontrols[i] = kcontrol;
1108 /* We implement power down on suspend by checking the power state of
1109 * the ALSA card - when we are suspending the ALSA state for the card
1112 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1114 int level = snd_power_get_state(widget->dapm->card->snd_card);
1117 case SNDRV_CTL_POWER_D3hot:
1118 case SNDRV_CTL_POWER_D3cold:
1119 if (widget->ignore_suspend)
1120 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1122 return widget->ignore_suspend;
1128 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1129 struct list_head *widgets)
1131 struct snd_soc_dapm_widget *w;
1132 struct list_head *it;
1133 unsigned int size = 0;
1136 list_for_each(it, widgets)
1139 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1143 list_for_each_entry(w, widgets, work_list)
1144 (*list)->widgets[i++] = w;
1146 (*list)->num_widgets = i;
1152 * Recursively reset the cached number of inputs or outputs for the specified
1153 * widget and all widgets that can be reached via incoming or outcoming paths
1156 static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1157 enum snd_soc_dapm_direction dir)
1159 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1160 struct snd_soc_dapm_path *path;
1162 widget->endpoints[dir] = -1;
1164 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1165 if (path->weak || path->is_supply)
1171 if (path->connect) {
1173 invalidate_paths_ep(path->node[dir], dir);
1180 * Common implementation for is_connected_output_ep() and
1181 * is_connected_input_ep(). The function is inlined since the combined size of
1182 * the two specialized functions is only marginally larger then the size of the
1183 * generic function and at the same time the fast path of the specialized
1184 * functions is significantly smaller than the generic function.
1186 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1187 struct list_head *list, enum snd_soc_dapm_direction dir,
1188 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1189 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1190 enum snd_soc_dapm_direction)),
1191 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1192 enum snd_soc_dapm_direction))
1194 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1195 struct snd_soc_dapm_path *path;
1198 if (widget->endpoints[dir] >= 0)
1199 return widget->endpoints[dir];
1201 DAPM_UPDATE_STAT(widget, path_checks);
1203 /* do we need to add this widget to the list ? */
1205 list_add_tail(&widget->work_list, list);
1207 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1209 custom_stop_condition = NULL;
1212 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1213 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1214 return widget->endpoints[dir];
1217 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1218 DAPM_UPDATE_STAT(widget, neighbour_checks);
1220 if (path->weak || path->is_supply)
1226 trace_snd_soc_dapm_path(widget, dir, path);
1228 if (path->connect) {
1230 con += fn(path->node[dir], list, custom_stop_condition);
1235 widget->endpoints[dir] = con;
1241 * Recursively check for a completed path to an active or physically connected
1242 * output widget. Returns number of complete paths.
1244 * Optionally, can be supplied with a function acting as a stopping condition.
1245 * This function takes the dapm widget currently being examined and the walk
1246 * direction as an arguments, it should return true if widgets from that point
1247 * in the graph onwards should not be added to the widget list.
1249 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1250 struct list_head *list,
1251 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1252 enum snd_soc_dapm_direction))
1254 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1255 is_connected_output_ep, custom_stop_condition);
1259 * Recursively check for a completed path to an active or physically connected
1260 * input widget. Returns number of complete paths.
1262 * Optionally, can be supplied with a function acting as a stopping condition.
1263 * This function takes the dapm widget currently being examined and the walk
1264 * direction as an arguments, it should return true if the walk should be
1265 * stopped and false otherwise.
1267 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1268 struct list_head *list,
1269 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1270 enum snd_soc_dapm_direction))
1272 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1273 is_connected_input_ep, custom_stop_condition);
1277 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1278 * @dai: the soc DAI.
1279 * @stream: stream direction.
1280 * @list: list of active widgets for this stream.
1281 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1282 * walk based on custom logic.
1284 * Queries DAPM graph as to whether a valid audio stream path exists for
1285 * the initial stream specified by name. This takes into account
1286 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1288 * Optionally, can be supplied with a function acting as a stopping condition.
1289 * This function takes the dapm widget currently being examined and the walk
1290 * direction as an arguments, it should return true if the walk should be
1291 * stopped and false otherwise.
1293 * Returns the number of valid paths or negative error.
1295 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1296 struct snd_soc_dapm_widget_list **list,
1297 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1298 enum snd_soc_dapm_direction))
1300 struct snd_soc_card *card = dai->component->card;
1301 struct snd_soc_dapm_widget *w;
1306 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1308 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1309 w = dai->playback_widget;
1310 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1311 paths = is_connected_output_ep(w, &widgets,
1312 custom_stop_condition);
1314 w = dai->capture_widget;
1315 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1316 paths = is_connected_input_ep(w, &widgets,
1317 custom_stop_condition);
1320 /* Drop starting point */
1321 list_del(widgets.next);
1323 ret = dapm_widget_list_create(list, &widgets);
1327 trace_snd_soc_dapm_connected(paths, stream);
1328 mutex_unlock(&card->dapm_mutex);
1334 * Handler for regulator supply widget.
1336 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1337 struct snd_kcontrol *kcontrol, int event)
1341 soc_dapm_async_complete(w->dapm);
1343 if (SND_SOC_DAPM_EVENT_ON(event)) {
1344 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1345 ret = regulator_allow_bypass(w->regulator, false);
1347 dev_warn(w->dapm->dev,
1348 "ASoC: Failed to unbypass %s: %d\n",
1352 return regulator_enable(w->regulator);
1354 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1355 ret = regulator_allow_bypass(w->regulator, true);
1357 dev_warn(w->dapm->dev,
1358 "ASoC: Failed to bypass %s: %d\n",
1362 return regulator_disable_deferred(w->regulator, w->shift);
1365 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1368 * Handler for pinctrl widget.
1370 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1371 struct snd_kcontrol *kcontrol, int event)
1373 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1374 struct pinctrl *p = w->pinctrl;
1375 struct pinctrl_state *s;
1380 if (SND_SOC_DAPM_EVENT_ON(event))
1381 s = pinctrl_lookup_state(p, priv->active_state);
1383 s = pinctrl_lookup_state(p, priv->sleep_state);
1388 return pinctrl_select_state(p, s);
1390 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1393 * Handler for clock supply widget.
1395 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1396 struct snd_kcontrol *kcontrol, int event)
1401 soc_dapm_async_complete(w->dapm);
1403 if (SND_SOC_DAPM_EVENT_ON(event)) {
1404 return clk_prepare_enable(w->clk);
1406 clk_disable_unprepare(w->clk);
1412 EXPORT_SYMBOL_GPL(dapm_clock_event);
1414 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1416 if (w->power_checked)
1417 return w->new_power;
1422 w->new_power = w->power_check(w);
1424 w->power_checked = true;
1426 return w->new_power;
1429 /* Generic check to see if a widget should be powered. */
1430 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1434 DAPM_UPDATE_STAT(w, power_checks);
1436 in = is_connected_input_ep(w, NULL, NULL);
1437 out = is_connected_output_ep(w, NULL, NULL);
1438 return out != 0 && in != 0;
1441 /* Check to see if a power supply is needed */
1442 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1444 struct snd_soc_dapm_path *path;
1446 DAPM_UPDATE_STAT(w, power_checks);
1448 /* Check if one of our outputs is connected */
1449 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1450 DAPM_UPDATE_STAT(w, neighbour_checks);
1455 if (path->connected &&
1456 !path->connected(path->source, path->sink))
1459 if (dapm_widget_power_check(path->sink))
1466 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1468 return w->connected;
1471 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1472 struct snd_soc_dapm_widget *b,
1477 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1478 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1483 sort = dapm_down_seq;
1485 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1486 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1488 if (sort[a->id] != sort[b->id])
1489 return sort[a->id] - sort[b->id];
1490 if (a->subseq != b->subseq) {
1492 return a->subseq - b->subseq;
1494 return b->subseq - a->subseq;
1496 if (a->reg != b->reg)
1497 return a->reg - b->reg;
1498 if (a->dapm != b->dapm)
1499 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1504 /* Insert a widget in order into a DAPM power sequence. */
1505 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1506 struct list_head *list,
1509 struct snd_soc_dapm_widget *w;
1511 list_for_each_entry(w, list, power_list)
1512 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1513 list_add_tail(&new_widget->power_list, &w->power_list);
1517 list_add_tail(&new_widget->power_list, list);
1520 static void dapm_seq_check_event(struct snd_soc_card *card,
1521 struct snd_soc_dapm_widget *w, int event)
1523 const char *ev_name;
1527 case SND_SOC_DAPM_PRE_PMU:
1528 ev_name = "PRE_PMU";
1531 case SND_SOC_DAPM_POST_PMU:
1532 ev_name = "POST_PMU";
1535 case SND_SOC_DAPM_PRE_PMD:
1536 ev_name = "PRE_PMD";
1539 case SND_SOC_DAPM_POST_PMD:
1540 ev_name = "POST_PMD";
1543 case SND_SOC_DAPM_WILL_PMU:
1544 ev_name = "WILL_PMU";
1547 case SND_SOC_DAPM_WILL_PMD:
1548 ev_name = "WILL_PMD";
1552 WARN(1, "Unknown event %d\n", event);
1556 if (w->new_power != power)
1559 if (w->event && (w->event_flags & event)) {
1560 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1562 soc_dapm_async_complete(w->dapm);
1563 trace_snd_soc_dapm_widget_event_start(w, event);
1564 ret = w->event(w, NULL, event);
1565 trace_snd_soc_dapm_widget_event_done(w, event);
1567 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1568 ev_name, w->name, ret);
1572 /* Apply the coalesced changes from a DAPM sequence */
1573 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1574 struct list_head *pending)
1576 struct snd_soc_dapm_context *dapm;
1577 struct snd_soc_dapm_widget *w;
1579 unsigned int value = 0;
1580 unsigned int mask = 0;
1582 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1586 list_for_each_entry(w, pending, power_list) {
1587 WARN_ON(reg != w->reg || dapm != w->dapm);
1588 w->power = w->new_power;
1590 mask |= w->mask << w->shift;
1592 value |= w->on_val << w->shift;
1594 value |= w->off_val << w->shift;
1596 pop_dbg(dapm->dev, card->pop_time,
1597 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1598 w->name, reg, value, mask);
1600 /* Check for events */
1601 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1602 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1606 /* Any widget will do, they should all be updating the
1610 pop_dbg(dapm->dev, card->pop_time,
1611 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1612 value, mask, reg, card->pop_time);
1613 pop_wait(card->pop_time);
1614 soc_dapm_update_bits(dapm, reg, mask, value);
1617 list_for_each_entry(w, pending, power_list) {
1618 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1619 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1623 /* Apply a DAPM power sequence.
1625 * We walk over a pre-sorted list of widgets to apply power to. In
1626 * order to minimise the number of writes to the device required
1627 * multiple widgets will be updated in a single write where possible.
1628 * Currently anything that requires more than a single write is not
1631 static void dapm_seq_run(struct snd_soc_card *card,
1632 struct list_head *list, int event, bool power_up)
1634 struct snd_soc_dapm_widget *w, *n;
1635 struct snd_soc_dapm_context *d;
1638 int cur_subseq = -1;
1639 int cur_reg = SND_SOC_NOPM;
1640 struct snd_soc_dapm_context *cur_dapm = NULL;
1647 sort = dapm_down_seq;
1649 list_for_each_entry_safe(w, n, list, power_list) {
1652 /* Do we need to apply any queued changes? */
1653 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1654 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1655 if (!list_empty(&pending))
1656 dapm_seq_run_coalesced(card, &pending);
1658 if (cur_dapm && cur_dapm->component) {
1659 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1660 if (sort[i] == cur_sort)
1661 snd_soc_component_seq_notifier(
1662 cur_dapm->component,
1666 if (cur_dapm && w->dapm != cur_dapm)
1667 soc_dapm_async_complete(cur_dapm);
1669 INIT_LIST_HEAD(&pending);
1671 cur_subseq = INT_MIN;
1672 cur_reg = SND_SOC_NOPM;
1677 case snd_soc_dapm_pre:
1681 if (event == SND_SOC_DAPM_STREAM_START)
1683 NULL, SND_SOC_DAPM_PRE_PMU);
1684 else if (event == SND_SOC_DAPM_STREAM_STOP)
1686 NULL, SND_SOC_DAPM_PRE_PMD);
1689 case snd_soc_dapm_post:
1693 if (event == SND_SOC_DAPM_STREAM_START)
1695 NULL, SND_SOC_DAPM_POST_PMU);
1696 else if (event == SND_SOC_DAPM_STREAM_STOP)
1698 NULL, SND_SOC_DAPM_POST_PMD);
1702 /* Queue it up for application */
1703 cur_sort = sort[w->id];
1704 cur_subseq = w->subseq;
1707 list_move(&w->power_list, &pending);
1712 dev_err(w->dapm->dev,
1713 "ASoC: Failed to apply widget power: %d\n", ret);
1716 if (!list_empty(&pending))
1717 dapm_seq_run_coalesced(card, &pending);
1719 if (cur_dapm && cur_dapm->component) {
1720 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1721 if (sort[i] == cur_sort)
1722 snd_soc_component_seq_notifier(
1723 cur_dapm->component,
1727 list_for_each_entry(d, &card->dapm_list, list) {
1728 soc_dapm_async_complete(d);
1732 static void dapm_widget_update(struct snd_soc_card *card)
1734 struct snd_soc_dapm_update *update = card->update;
1735 struct snd_soc_dapm_widget_list *wlist;
1736 struct snd_soc_dapm_widget *w = NULL;
1740 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1743 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1745 for (wi = 0; wi < wlist->num_widgets; wi++) {
1746 w = wlist->widgets[wi];
1748 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1749 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1751 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1759 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1762 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1765 if (update->has_second_set) {
1766 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1767 update->mask2, update->val2);
1769 dev_err(w->dapm->dev,
1770 "ASoC: %s DAPM update failed: %d\n",
1774 for (wi = 0; wi < wlist->num_widgets; wi++) {
1775 w = wlist->widgets[wi];
1777 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1778 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1780 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1786 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1787 * they're changing state.
1789 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1791 struct snd_soc_dapm_context *d = data;
1794 /* If we're off and we're not supposed to go into STANDBY */
1795 if (d->bias_level == SND_SOC_BIAS_OFF &&
1796 d->target_bias_level != SND_SOC_BIAS_OFF) {
1798 pm_runtime_get_sync(d->dev);
1800 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1803 "ASoC: Failed to turn on bias: %d\n", ret);
1806 /* Prepare for a transition to ON or away from ON */
1807 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1808 d->bias_level != SND_SOC_BIAS_ON) ||
1809 (d->target_bias_level != SND_SOC_BIAS_ON &&
1810 d->bias_level == SND_SOC_BIAS_ON)) {
1811 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1814 "ASoC: Failed to prepare bias: %d\n", ret);
1818 /* Async callback run prior to DAPM sequences - brings to their final
1821 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1823 struct snd_soc_dapm_context *d = data;
1826 /* If we just powered the last thing off drop to standby bias */
1827 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1828 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1829 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1830 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1832 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1836 /* If we're in standby and can support bias off then do that */
1837 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1838 d->target_bias_level == SND_SOC_BIAS_OFF) {
1839 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1841 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1845 pm_runtime_put(d->dev);
1848 /* If we just powered up then move to active bias */
1849 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1850 d->target_bias_level == SND_SOC_BIAS_ON) {
1851 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1853 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1858 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1859 bool power, bool connect)
1861 /* If a connection is being made or broken then that update
1862 * will have marked the peer dirty, otherwise the widgets are
1863 * not connected and this update has no impact. */
1867 /* If the peer is already in the state we're moving to then we
1868 * won't have an impact on it. */
1869 if (power != peer->power)
1870 dapm_mark_dirty(peer, "peer state change");
1873 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1874 struct list_head *up_list,
1875 struct list_head *down_list)
1877 struct snd_soc_dapm_path *path;
1879 if (w->power == power)
1882 trace_snd_soc_dapm_widget_power(w, power);
1884 /* If we changed our power state perhaps our neigbours changed
1887 snd_soc_dapm_widget_for_each_source_path(w, path)
1888 dapm_widget_set_peer_power(path->source, power, path->connect);
1890 /* Supplies can't affect their outputs, only their inputs */
1891 if (!w->is_supply) {
1892 snd_soc_dapm_widget_for_each_sink_path(w, path)
1893 dapm_widget_set_peer_power(path->sink, power,
1898 dapm_seq_insert(w, up_list, true);
1900 dapm_seq_insert(w, down_list, false);
1903 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1904 struct list_head *up_list,
1905 struct list_head *down_list)
1910 case snd_soc_dapm_pre:
1911 dapm_seq_insert(w, down_list, false);
1913 case snd_soc_dapm_post:
1914 dapm_seq_insert(w, up_list, true);
1918 power = dapm_widget_power_check(w);
1920 dapm_widget_set_power(w, power, up_list, down_list);
1925 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1927 if (dapm->idle_bias_off)
1930 switch (snd_power_get_state(dapm->card->snd_card)) {
1931 case SNDRV_CTL_POWER_D3hot:
1932 case SNDRV_CTL_POWER_D3cold:
1933 return dapm->suspend_bias_off;
1942 * Scan each dapm widget for complete audio path.
1943 * A complete path is a route that has valid endpoints i.e.:-
1945 * o DAC to output pin.
1946 * o Input pin to ADC.
1947 * o Input pin to Output pin (bypass, sidetone)
1948 * o DAC to ADC (loopback).
1950 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1952 struct snd_soc_dapm_widget *w;
1953 struct snd_soc_dapm_context *d;
1955 LIST_HEAD(down_list);
1956 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1957 enum snd_soc_bias_level bias;
1960 lockdep_assert_held(&card->dapm_mutex);
1962 trace_snd_soc_dapm_start(card);
1964 list_for_each_entry(d, &card->dapm_list, list) {
1965 if (dapm_idle_bias_off(d))
1966 d->target_bias_level = SND_SOC_BIAS_OFF;
1968 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1973 /* Check which widgets we need to power and store them in
1974 * lists indicating if they should be powered up or down. We
1975 * only check widgets that have been flagged as dirty but note
1976 * that new widgets may be added to the dirty list while we
1979 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1980 dapm_power_one_widget(w, &up_list, &down_list);
1983 list_for_each_entry(w, &card->widgets, list) {
1985 case snd_soc_dapm_pre:
1986 case snd_soc_dapm_post:
1987 /* These widgets always need to be powered */
1990 list_del_init(&w->dirty);
1997 /* Supplies and micbiases only bring the
1998 * context up to STANDBY as unless something
1999 * else is active and passing audio they
2000 * generally don't require full power. Signal
2001 * generators are virtual pins and have no
2002 * power impact themselves.
2005 case snd_soc_dapm_siggen:
2006 case snd_soc_dapm_vmid:
2008 case snd_soc_dapm_supply:
2009 case snd_soc_dapm_regulator_supply:
2010 case snd_soc_dapm_pinctrl:
2011 case snd_soc_dapm_clock_supply:
2012 case snd_soc_dapm_micbias:
2013 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2014 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2017 d->target_bias_level = SND_SOC_BIAS_ON;
2024 /* Force all contexts in the card to the same bias state if
2025 * they're not ground referenced.
2027 bias = SND_SOC_BIAS_OFF;
2028 list_for_each_entry(d, &card->dapm_list, list)
2029 if (d->target_bias_level > bias)
2030 bias = d->target_bias_level;
2031 list_for_each_entry(d, &card->dapm_list, list)
2032 if (!dapm_idle_bias_off(d))
2033 d->target_bias_level = bias;
2035 trace_snd_soc_dapm_walk_done(card);
2037 /* Run card bias changes at first */
2038 dapm_pre_sequence_async(&card->dapm, 0);
2039 /* Run other bias changes in parallel */
2040 list_for_each_entry(d, &card->dapm_list, list) {
2041 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2042 async_schedule_domain(dapm_pre_sequence_async, d,
2045 async_synchronize_full_domain(&async_domain);
2047 list_for_each_entry(w, &down_list, power_list) {
2048 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2051 list_for_each_entry(w, &up_list, power_list) {
2052 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2055 /* Power down widgets first; try to avoid amplifying pops. */
2056 dapm_seq_run(card, &down_list, event, false);
2058 dapm_widget_update(card);
2061 dapm_seq_run(card, &up_list, event, true);
2063 /* Run all the bias changes in parallel */
2064 list_for_each_entry(d, &card->dapm_list, list) {
2065 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2066 async_schedule_domain(dapm_post_sequence_async, d,
2069 async_synchronize_full_domain(&async_domain);
2070 /* Run card bias changes at last */
2071 dapm_post_sequence_async(&card->dapm, 0);
2073 /* do we need to notify any clients that DAPM event is complete */
2074 list_for_each_entry(d, &card->dapm_list, list) {
2078 ret = snd_soc_component_stream_event(d->component, event);
2083 pop_dbg(card->dev, card->pop_time,
2084 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2085 pop_wait(card->pop_time);
2087 trace_snd_soc_dapm_done(card);
2092 #ifdef CONFIG_DEBUG_FS
2093 static ssize_t dapm_widget_power_read_file(struct file *file,
2094 char __user *user_buf,
2095 size_t count, loff_t *ppos)
2097 struct snd_soc_dapm_widget *w = file->private_data;
2098 struct snd_soc_card *card = w->dapm->card;
2099 enum snd_soc_dapm_direction dir, rdir;
2103 struct snd_soc_dapm_path *p = NULL;
2105 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2109 mutex_lock(&card->dapm_mutex);
2111 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2116 in = is_connected_input_ep(w, NULL, NULL);
2117 out = is_connected_output_ep(w, NULL, NULL);
2120 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2121 w->name, w->power ? "On" : "Off",
2122 w->force ? " (forced)" : "", in, out);
2125 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2126 " - R%d(0x%x) mask 0x%x",
2127 w->reg, w->reg, w->mask << w->shift);
2129 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2132 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2134 w->active ? "active" : "inactive");
2136 snd_soc_dapm_for_each_direction(dir) {
2137 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2138 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2139 if (p->connected && !p->connected(p->source, p->sink))
2145 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2146 " %s \"%s\" \"%s\"\n",
2147 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2148 p->name ? p->name : "static",
2149 p->node[rdir]->name);
2153 mutex_unlock(&card->dapm_mutex);
2155 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2161 static const struct file_operations dapm_widget_power_fops = {
2162 .open = simple_open,
2163 .read = dapm_widget_power_read_file,
2164 .llseek = default_llseek,
2167 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2168 size_t count, loff_t *ppos)
2170 struct snd_soc_dapm_context *dapm = file->private_data;
2173 switch (dapm->bias_level) {
2174 case SND_SOC_BIAS_ON:
2177 case SND_SOC_BIAS_PREPARE:
2178 level = "Prepare\n";
2180 case SND_SOC_BIAS_STANDBY:
2181 level = "Standby\n";
2183 case SND_SOC_BIAS_OFF:
2187 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2188 level = "Unknown\n";
2192 return simple_read_from_buffer(user_buf, count, ppos, level,
2196 static const struct file_operations dapm_bias_fops = {
2197 .open = simple_open,
2198 .read = dapm_bias_read_file,
2199 .llseek = default_llseek,
2202 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2203 struct dentry *parent)
2205 if (!parent || IS_ERR(parent))
2208 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2210 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2214 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2216 struct snd_soc_dapm_context *dapm = w->dapm;
2218 if (!dapm->debugfs_dapm || !w->name)
2221 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2222 &dapm_widget_power_fops);
2225 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2227 debugfs_remove_recursive(dapm->debugfs_dapm);
2228 dapm->debugfs_dapm = NULL;
2232 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2233 struct dentry *parent)
2237 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2241 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2248 * soc_dapm_connect_path() - Connects or disconnects a path
2249 * @path: The path to update
2250 * @connect: The new connect state of the path. True if the path is connected,
2251 * false if it is disconnected.
2252 * @reason: The reason why the path changed (for debugging only)
2254 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2255 bool connect, const char *reason)
2257 if (path->connect == connect)
2260 path->connect = connect;
2261 dapm_mark_dirty(path->source, reason);
2262 dapm_mark_dirty(path->sink, reason);
2263 dapm_path_invalidate(path);
2266 /* test and update the power status of a mux widget */
2267 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2268 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2270 struct snd_soc_dapm_path *path;
2274 lockdep_assert_held(&card->dapm_mutex);
2276 /* find dapm widget path assoc with kcontrol */
2277 dapm_kcontrol_for_each_path(path, kcontrol) {
2279 /* we now need to match the string in the enum to the path */
2280 if (e && !(strcmp(path->name, e->texts[mux])))
2285 soc_dapm_connect_path(path, connect, "mux update");
2289 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2294 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2295 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2296 struct snd_soc_dapm_update *update)
2298 struct snd_soc_card *card = dapm->card;
2301 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2302 card->update = update;
2303 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2304 card->update = NULL;
2305 mutex_unlock(&card->dapm_mutex);
2307 soc_dpcm_runtime_update(card);
2310 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2312 /* test and update the power status of a mixer or switch widget */
2313 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2314 struct snd_kcontrol *kcontrol,
2315 int connect, int rconnect)
2317 struct snd_soc_dapm_path *path;
2320 lockdep_assert_held(&card->dapm_mutex);
2322 /* find dapm widget path assoc with kcontrol */
2323 dapm_kcontrol_for_each_path(path, kcontrol) {
2325 * Ideally this function should support any number of
2326 * paths and channels. But since kcontrols only come
2327 * in mono and stereo variants, we are limited to 2
2330 * The following code assumes for stereo controls the
2331 * first path (when 'found == 0') is the left channel,
2332 * and all remaining paths (when 'found == 1') are the
2335 * A stereo control is signified by a valid 'rconnect'
2336 * value, either 0 for unconnected, or >= 0 for connected.
2337 * This is chosen instead of using snd_soc_volsw_is_stereo,
2338 * so that the behavior of snd_soc_dapm_mixer_update_power
2339 * doesn't change even when the kcontrol passed in is
2342 * It passes 'connect' as the path connect status for
2343 * the left channel, and 'rconnect' for the right
2346 if (found && rconnect >= 0)
2347 soc_dapm_connect_path(path, rconnect, "mixer update");
2349 soc_dapm_connect_path(path, connect, "mixer update");
2354 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2359 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2360 struct snd_kcontrol *kcontrol, int connect,
2361 struct snd_soc_dapm_update *update)
2363 struct snd_soc_card *card = dapm->card;
2366 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2367 card->update = update;
2368 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2369 card->update = NULL;
2370 mutex_unlock(&card->dapm_mutex);
2372 soc_dpcm_runtime_update(card);
2375 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2377 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2380 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2381 struct snd_soc_dapm_widget *w;
2383 char *state = "not set";
2385 /* card won't be set for the dummy component, as a spot fix
2386 * we're checking for that case specifically here but in future
2387 * we will ensure that the dummy component looks like others.
2392 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2393 if (w->dapm != dapm)
2396 /* only display widgets that burn power */
2398 case snd_soc_dapm_hp:
2399 case snd_soc_dapm_mic:
2400 case snd_soc_dapm_spk:
2401 case snd_soc_dapm_line:
2402 case snd_soc_dapm_micbias:
2403 case snd_soc_dapm_dac:
2404 case snd_soc_dapm_adc:
2405 case snd_soc_dapm_pga:
2406 case snd_soc_dapm_effect:
2407 case snd_soc_dapm_out_drv:
2408 case snd_soc_dapm_mixer:
2409 case snd_soc_dapm_mixer_named_ctl:
2410 case snd_soc_dapm_supply:
2411 case snd_soc_dapm_regulator_supply:
2412 case snd_soc_dapm_pinctrl:
2413 case snd_soc_dapm_clock_supply:
2415 count += sprintf(buf + count, "%s: %s\n",
2416 w->name, w->power ? "On":"Off");
2423 switch (snd_soc_dapm_get_bias_level(dapm)) {
2424 case SND_SOC_BIAS_ON:
2427 case SND_SOC_BIAS_PREPARE:
2430 case SND_SOC_BIAS_STANDBY:
2433 case SND_SOC_BIAS_OFF:
2437 count += sprintf(buf + count, "PM State: %s\n", state);
2442 /* show dapm widget status in sys fs */
2443 static ssize_t dapm_widget_show(struct device *dev,
2444 struct device_attribute *attr, char *buf)
2446 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2447 struct snd_soc_dai *codec_dai;
2450 mutex_lock(&rtd->card->dapm_mutex);
2452 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2453 struct snd_soc_component *cmpnt = codec_dai->component;
2455 count += dapm_widget_show_component(cmpnt, buf + count);
2458 mutex_unlock(&rtd->card->dapm_mutex);
2463 static DEVICE_ATTR_RO(dapm_widget);
2465 struct attribute *soc_dapm_dev_attrs[] = {
2466 &dev_attr_dapm_widget.attr,
2470 static void dapm_free_path(struct snd_soc_dapm_path *path)
2472 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2473 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2474 list_del(&path->list_kcontrol);
2475 list_del(&path->list);
2479 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2481 struct snd_soc_dapm_path *p, *next_p;
2482 enum snd_soc_dapm_direction dir;
2485 list_del(&w->dirty);
2487 * remove source and sink paths associated to this widget.
2488 * While removing the path, remove reference to it from both
2489 * source and sink widgets so that path is removed only once.
2491 snd_soc_dapm_for_each_direction(dir) {
2492 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2496 kfree(w->kcontrols);
2497 kfree_const(w->name);
2498 kfree_const(w->sname);
2502 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2504 dapm->path_sink_cache.widget = NULL;
2505 dapm->path_source_cache.widget = NULL;
2508 /* free all dapm widgets and resources */
2509 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2511 struct snd_soc_dapm_widget *w, *next_w;
2513 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2514 if (w->dapm != dapm)
2516 snd_soc_dapm_free_widget(w);
2518 snd_soc_dapm_reset_cache(dapm);
2521 static struct snd_soc_dapm_widget *dapm_find_widget(
2522 struct snd_soc_dapm_context *dapm, const char *pin,
2523 bool search_other_contexts)
2525 struct snd_soc_dapm_widget *w;
2526 struct snd_soc_dapm_widget *fallback = NULL;
2528 list_for_each_entry(w, &dapm->card->widgets, list) {
2529 if (!strcmp(w->name, pin)) {
2530 if (w->dapm == dapm)
2537 if (search_other_contexts)
2544 * set the DAPM pin status:
2545 * returns 1 when the value has been updated, 0 when unchanged, or a negative
2546 * error code; called from kcontrol put callback
2548 static int __snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2549 const char *pin, int status)
2551 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2554 dapm_assert_locked(dapm);
2557 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2561 if (w->connected != status) {
2562 dapm_mark_dirty(w, "pin configuration");
2563 dapm_widget_invalidate_input_paths(w);
2564 dapm_widget_invalidate_output_paths(w);
2568 w->connected = status;
2576 * similar as __snd_soc_dapm_set_pin(), but returns 0 when successful;
2577 * called from several API functions below
2579 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2580 const char *pin, int status)
2582 int ret = __snd_soc_dapm_set_pin(dapm, pin, status);
2584 return ret < 0 ? ret : 0;
2588 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2589 * @dapm: DAPM context
2591 * Walks all dapm audio paths and powers widgets according to their
2592 * stream or path usage.
2594 * Requires external locking.
2596 * Returns 0 for success.
2598 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2601 * Suppress early reports (eg, jacks syncing their state) to avoid
2602 * silly DAPM runs during card startup.
2604 if (!dapm->card || !dapm->card->instantiated)
2607 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2609 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2612 * snd_soc_dapm_sync - scan and power dapm paths
2613 * @dapm: DAPM context
2615 * Walks all dapm audio paths and powers widgets according to their
2616 * stream or path usage.
2618 * Returns 0 for success.
2620 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2624 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2625 ret = snd_soc_dapm_sync_unlocked(dapm);
2626 mutex_unlock(&dapm->card->dapm_mutex);
2629 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2631 static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2632 struct snd_soc_dapm_widget *w,
2636 case snd_soc_dapm_aif_out:
2637 case snd_soc_dapm_aif_in:
2643 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2644 w->channel < channels ? "Connecting" : "Disconnecting",
2645 p->source->name, p->sink->name);
2647 if (w->channel < channels)
2648 soc_dapm_connect_path(p, true, "dai update");
2650 soc_dapm_connect_path(p, false, "dai update");
2655 static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2656 struct snd_pcm_hw_params *params,
2657 struct snd_soc_dai *dai)
2659 int dir = substream->stream;
2660 int channels = params_channels(params);
2661 struct snd_soc_dapm_path *p;
2662 struct snd_soc_dapm_widget *w;
2665 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
2666 w = dai->playback_widget;
2668 w = dai->capture_widget;
2673 dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
2674 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
2676 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2677 ret = dapm_update_dai_chan(p, p->sink, channels);
2682 snd_soc_dapm_widget_for_each_source_path(w, p) {
2683 ret = dapm_update_dai_chan(p, p->source, channels);
2691 int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
2692 struct snd_pcm_hw_params *params,
2693 struct snd_soc_dai *dai)
2695 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2698 mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2699 ret = dapm_update_dai_unlocked(substream, params, dai);
2700 mutex_unlock(&rtd->card->dapm_mutex);
2704 EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
2707 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2708 * @w: The widget for which to update the flags
2710 * Some widgets have a dynamic category which depends on which neighbors they
2711 * are connected to. This function update the category for these widgets.
2713 * This function must be called whenever a path is added or removed to a widget.
2715 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2717 enum snd_soc_dapm_direction dir;
2718 struct snd_soc_dapm_path *p;
2722 case snd_soc_dapm_input:
2723 /* On a fully routed card an input is never a source */
2724 if (w->dapm->card->fully_routed)
2726 ep = SND_SOC_DAPM_EP_SOURCE;
2727 snd_soc_dapm_widget_for_each_source_path(w, p) {
2728 if (p->source->id == snd_soc_dapm_micbias ||
2729 p->source->id == snd_soc_dapm_mic ||
2730 p->source->id == snd_soc_dapm_line ||
2731 p->source->id == snd_soc_dapm_output) {
2737 case snd_soc_dapm_output:
2738 /* On a fully routed card a output is never a sink */
2739 if (w->dapm->card->fully_routed)
2741 ep = SND_SOC_DAPM_EP_SINK;
2742 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2743 if (p->sink->id == snd_soc_dapm_spk ||
2744 p->sink->id == snd_soc_dapm_hp ||
2745 p->sink->id == snd_soc_dapm_line ||
2746 p->sink->id == snd_soc_dapm_input) {
2752 case snd_soc_dapm_line:
2754 snd_soc_dapm_for_each_direction(dir) {
2755 if (!list_empty(&w->edges[dir]))
2756 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2766 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2767 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2768 const char *control)
2770 bool dynamic_source = false;
2771 bool dynamic_sink = false;
2776 switch (source->id) {
2777 case snd_soc_dapm_demux:
2778 dynamic_source = true;
2785 case snd_soc_dapm_mux:
2786 case snd_soc_dapm_switch:
2787 case snd_soc_dapm_mixer:
2788 case snd_soc_dapm_mixer_named_ctl:
2789 dynamic_sink = true;
2795 if (dynamic_source && dynamic_sink) {
2797 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2798 source->name, control, sink->name);
2800 } else if (!dynamic_source && !dynamic_sink) {
2802 "Control not supported for path %s -> [%s] -> %s\n",
2803 source->name, control, sink->name);
2810 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2811 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2812 const char *control,
2813 int (*connected)(struct snd_soc_dapm_widget *source,
2814 struct snd_soc_dapm_widget *sink))
2816 struct snd_soc_dapm_widget *widgets[2];
2817 enum snd_soc_dapm_direction dir;
2818 struct snd_soc_dapm_path *path;
2821 if (wsink->is_supply && !wsource->is_supply) {
2823 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2824 wsource->name, wsink->name);
2828 if (connected && !wsource->is_supply) {
2830 "connected() callback only supported for supply widgets (%s -> %s)\n",
2831 wsource->name, wsink->name);
2835 if (wsource->is_supply && control) {
2837 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2838 wsource->name, control, wsink->name);
2842 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2846 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2850 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2851 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2852 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2853 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2855 path->connected = connected;
2856 INIT_LIST_HEAD(&path->list);
2857 INIT_LIST_HEAD(&path->list_kcontrol);
2859 if (wsource->is_supply || wsink->is_supply)
2860 path->is_supply = 1;
2862 /* connect static paths */
2863 if (control == NULL) {
2866 switch (wsource->id) {
2867 case snd_soc_dapm_demux:
2868 ret = dapm_connect_mux(dapm, path, control, wsource);
2876 switch (wsink->id) {
2877 case snd_soc_dapm_mux:
2878 ret = dapm_connect_mux(dapm, path, control, wsink);
2882 case snd_soc_dapm_switch:
2883 case snd_soc_dapm_mixer:
2884 case snd_soc_dapm_mixer_named_ctl:
2885 ret = dapm_connect_mixer(dapm, path, control);
2894 list_add(&path->list, &dapm->card->paths);
2895 snd_soc_dapm_for_each_direction(dir)
2896 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2898 snd_soc_dapm_for_each_direction(dir) {
2899 dapm_update_widget_flags(widgets[dir]);
2900 dapm_mark_dirty(widgets[dir], "Route added");
2903 if (dapm->card->instantiated && path->connect)
2904 dapm_path_invalidate(path);
2912 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2913 const struct snd_soc_dapm_route *route)
2915 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2916 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2919 char prefixed_sink[80];
2920 char prefixed_source[80];
2922 unsigned int sink_ref = 0;
2923 unsigned int source_ref = 0;
2926 prefix = soc_dapm_prefix(dapm);
2928 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2929 prefix, route->sink);
2930 sink = prefixed_sink;
2931 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2932 prefix, route->source);
2933 source = prefixed_source;
2936 source = route->source;
2939 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2940 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2942 if (wsink && wsource)
2946 * find src and dest widgets over all widgets but favor a widget from
2947 * current DAPM context
2949 list_for_each_entry(w, &dapm->card->widgets, list) {
2950 if (!wsink && !(strcmp(w->name, sink))) {
2952 if (w->dapm == dapm) {
2960 "ASoC: sink widget %s overwritten\n",
2964 if (!wsource && !(strcmp(w->name, source))) {
2966 if (w->dapm == dapm) {
2974 "ASoC: source widget %s overwritten\n",
2978 /* use widget from another DAPM context if not found from this */
2984 if (wsource == NULL) {
2985 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2989 if (wsink == NULL) {
2990 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2996 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2997 dapm_wcache_update(&dapm->path_source_cache, wsource);
2999 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
3006 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
3007 source, route->control, sink);
3011 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
3012 const struct snd_soc_dapm_route *route)
3014 struct snd_soc_dapm_widget *wsource, *wsink;
3015 struct snd_soc_dapm_path *path, *p;
3018 char prefixed_sink[80];
3019 char prefixed_source[80];
3022 if (route->control) {
3024 "ASoC: Removal of routes with controls not supported\n");
3028 prefix = soc_dapm_prefix(dapm);
3030 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
3031 prefix, route->sink);
3032 sink = prefixed_sink;
3033 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
3034 prefix, route->source);
3035 source = prefixed_source;
3038 source = route->source;
3042 list_for_each_entry(p, &dapm->card->paths, list) {
3043 if (strcmp(p->source->name, source) != 0)
3045 if (strcmp(p->sink->name, sink) != 0)
3052 wsource = path->source;
3055 dapm_mark_dirty(wsource, "Route removed");
3056 dapm_mark_dirty(wsink, "Route removed");
3058 dapm_path_invalidate(path);
3060 dapm_free_path(path);
3062 /* Update any path related flags */
3063 dapm_update_widget_flags(wsource);
3064 dapm_update_widget_flags(wsink);
3066 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
3074 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
3075 * @dapm: DAPM context
3076 * @route: audio routes
3077 * @num: number of routes
3079 * Connects 2 dapm widgets together via a named audio path. The sink is
3080 * the widget receiving the audio signal, whilst the source is the sender
3081 * of the audio signal.
3083 * Returns 0 for success else error. On error all resources can be freed
3084 * with a call to snd_soc_card_free().
3086 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
3087 const struct snd_soc_dapm_route *route, int num)
3091 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3092 for (i = 0; i < num; i++) {
3093 r = snd_soc_dapm_add_route(dapm, route);
3095 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
3097 route->control ? route->control : "direct",
3103 mutex_unlock(&dapm->card->dapm_mutex);
3107 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
3110 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
3111 * @dapm: DAPM context
3112 * @route: audio routes
3113 * @num: number of routes
3115 * Removes routes from the DAPM context.
3117 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3118 const struct snd_soc_dapm_route *route, int num)
3122 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3123 for (i = 0; i < num; i++) {
3124 snd_soc_dapm_del_route(dapm, route);
3127 mutex_unlock(&dapm->card->dapm_mutex);
3131 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3133 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3134 const struct snd_soc_dapm_route *route)
3136 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3139 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3142 struct snd_soc_dapm_path *path;
3146 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3152 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3157 if (route->control || route->connected)
3158 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3159 route->source, route->sink);
3161 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3162 if (path->sink == sink) {
3169 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3170 route->source, route->sink);
3172 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3173 count, route->source, route->sink);
3179 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
3180 * @dapm: DAPM context
3181 * @route: audio routes
3182 * @num: number of routes
3184 * Mark existing routes matching those specified in the passed array
3185 * as being weak, meaning that they are ignored for the purpose of
3186 * power decisions. The main intended use case is for sidetone paths
3187 * which couple audio between other independent paths if they are both
3188 * active in order to make the combination work better at the user
3189 * level but which aren't intended to be "used".
3191 * Note that CODEC drivers should not use this as sidetone type paths
3192 * can frequently also be used as bypass paths.
3194 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3195 const struct snd_soc_dapm_route *route, int num)
3200 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3201 for (i = 0; i < num; i++) {
3202 err = snd_soc_dapm_weak_route(dapm, route);
3207 mutex_unlock(&dapm->card->dapm_mutex);
3211 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3214 * snd_soc_dapm_new_widgets - add new dapm widgets
3215 * @card: card to be checked for new dapm widgets
3217 * Checks the codec for any new dapm widgets and creates them if found.
3219 * Returns 0 for success.
3221 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3223 struct snd_soc_dapm_widget *w;
3226 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3228 list_for_each_entry(w, &card->widgets, list)
3233 if (w->num_kcontrols) {
3234 w->kcontrols = kcalloc(w->num_kcontrols,
3235 sizeof(struct snd_kcontrol *),
3237 if (!w->kcontrols) {
3238 mutex_unlock(&card->dapm_mutex);
3244 case snd_soc_dapm_switch:
3245 case snd_soc_dapm_mixer:
3246 case snd_soc_dapm_mixer_named_ctl:
3249 case snd_soc_dapm_mux:
3250 case snd_soc_dapm_demux:
3253 case snd_soc_dapm_pga:
3254 case snd_soc_dapm_effect:
3255 case snd_soc_dapm_out_drv:
3258 case snd_soc_dapm_dai_link:
3259 dapm_new_dai_link(w);
3265 /* Read the initial power state from the device */
3267 soc_dapm_read(w->dapm, w->reg, &val);
3268 val = val >> w->shift;
3270 if (val == w->on_val)
3276 dapm_mark_dirty(w, "new widget");
3277 dapm_debugfs_add_widget(w);
3280 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3281 mutex_unlock(&card->dapm_mutex);
3284 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3287 * snd_soc_dapm_get_volsw - dapm mixer get callback
3288 * @kcontrol: mixer control
3289 * @ucontrol: control element information
3291 * Callback to get the value of a dapm mixer control.
3293 * Returns 0 for success.
3295 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3296 struct snd_ctl_elem_value *ucontrol)
3298 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3299 struct snd_soc_card *card = dapm->card;
3300 struct soc_mixer_control *mc =
3301 (struct soc_mixer_control *)kcontrol->private_value;
3303 unsigned int shift = mc->shift;
3305 unsigned int width = fls(max);
3306 unsigned int mask = (1 << fls(max)) - 1;
3307 unsigned int invert = mc->invert;
3308 unsigned int reg_val, val, rval = 0;
3311 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3312 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3313 ret = soc_dapm_read(dapm, reg, ®_val);
3314 val = (reg_val >> shift) & mask;
3316 if (ret == 0 && reg != mc->rreg)
3317 ret = soc_dapm_read(dapm, mc->rreg, ®_val);
3319 if (snd_soc_volsw_is_stereo(mc))
3320 rval = (reg_val >> mc->rshift) & mask;
3322 reg_val = dapm_kcontrol_get_value(kcontrol);
3323 val = reg_val & mask;
3325 if (snd_soc_volsw_is_stereo(mc))
3326 rval = (reg_val >> width) & mask;
3328 mutex_unlock(&card->dapm_mutex);
3334 ucontrol->value.integer.value[0] = max - val;
3336 ucontrol->value.integer.value[0] = val;
3338 if (snd_soc_volsw_is_stereo(mc)) {
3340 ucontrol->value.integer.value[1] = max - rval;
3342 ucontrol->value.integer.value[1] = rval;
3347 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3350 * snd_soc_dapm_put_volsw - dapm mixer set callback
3351 * @kcontrol: mixer control
3352 * @ucontrol: control element information
3354 * Callback to set the value of a dapm mixer control.
3356 * Returns 0 for success.
3358 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3359 struct snd_ctl_elem_value *ucontrol)
3361 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3362 struct snd_soc_card *card = dapm->card;
3363 struct soc_mixer_control *mc =
3364 (struct soc_mixer_control *)kcontrol->private_value;
3366 unsigned int shift = mc->shift;
3368 unsigned int width = fls(max);
3369 unsigned int mask = (1 << width) - 1;
3370 unsigned int invert = mc->invert;
3371 unsigned int val, rval = 0;
3372 int connect, rconnect = -1, change, reg_change = 0;
3373 struct snd_soc_dapm_update update = {};
3376 val = (ucontrol->value.integer.value[0] & mask);
3382 if (snd_soc_volsw_is_stereo(mc)) {
3383 rval = (ucontrol->value.integer.value[1] & mask);
3389 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3391 /* This assumes field width < (bits in unsigned int / 2) */
3392 if (width > sizeof(unsigned int) * 8 / 2)
3394 "ASoC: control %s field width limit exceeded\n",
3396 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3398 if (reg != SND_SOC_NOPM) {
3400 rval = rval << mc->rshift;
3402 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3404 if (snd_soc_volsw_is_stereo(mc))
3405 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3410 if (change || reg_change) {
3412 if (snd_soc_volsw_is_stereo(mc)) {
3413 update.has_second_set = true;
3414 update.reg2 = mc->rreg;
3415 update.mask2 = mask << mc->rshift;
3418 update.kcontrol = kcontrol;
3420 update.mask = mask << shift;
3422 card->update = &update;
3425 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3428 card->update = NULL;
3431 mutex_unlock(&card->dapm_mutex);
3434 soc_dpcm_runtime_update(card);
3438 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3441 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3442 * @kcontrol: mixer control
3443 * @ucontrol: control element information
3445 * Callback to get the value of a dapm enumerated double mixer control.
3447 * Returns 0 for success.
3449 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3450 struct snd_ctl_elem_value *ucontrol)
3452 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3453 struct snd_soc_card *card = dapm->card;
3454 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3455 unsigned int reg_val, val;
3457 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3458 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3459 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3461 mutex_unlock(&card->dapm_mutex);
3465 reg_val = dapm_kcontrol_get_value(kcontrol);
3467 mutex_unlock(&card->dapm_mutex);
3469 val = (reg_val >> e->shift_l) & e->mask;
3470 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3471 if (e->shift_l != e->shift_r) {
3472 val = (reg_val >> e->shift_r) & e->mask;
3473 val = snd_soc_enum_val_to_item(e, val);
3474 ucontrol->value.enumerated.item[1] = val;
3479 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3482 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3483 * @kcontrol: mixer control
3484 * @ucontrol: control element information
3486 * Callback to set the value of a dapm enumerated double mixer control.
3488 * Returns 0 for success.
3490 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3491 struct snd_ctl_elem_value *ucontrol)
3493 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3494 struct snd_soc_card *card = dapm->card;
3495 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3496 unsigned int *item = ucontrol->value.enumerated.item;
3497 unsigned int val, change, reg_change = 0;
3499 struct snd_soc_dapm_update update = {};
3502 if (item[0] >= e->items)
3505 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3506 mask = e->mask << e->shift_l;
3507 if (e->shift_l != e->shift_r) {
3508 if (item[1] > e->items)
3510 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3511 mask |= e->mask << e->shift_r;
3514 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3516 change = dapm_kcontrol_set_value(kcontrol, val);
3518 if (e->reg != SND_SOC_NOPM)
3519 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3521 if (change || reg_change) {
3523 update.kcontrol = kcontrol;
3524 update.reg = e->reg;
3527 card->update = &update;
3530 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3532 card->update = NULL;
3535 mutex_unlock(&card->dapm_mutex);
3538 soc_dpcm_runtime_update(card);
3542 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3545 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3547 * @kcontrol: mixer control
3548 * @uinfo: control element information
3550 * Callback to provide information about a pin switch control.
3552 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3553 struct snd_ctl_elem_info *uinfo)
3555 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3557 uinfo->value.integer.min = 0;
3558 uinfo->value.integer.max = 1;
3562 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3565 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3567 * @kcontrol: mixer control
3570 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3571 struct snd_ctl_elem_value *ucontrol)
3573 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3574 const char *pin = (const char *)kcontrol->private_value;
3576 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3578 ucontrol->value.integer.value[0] =
3579 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3581 mutex_unlock(&card->dapm_mutex);
3585 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3588 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3590 * @kcontrol: mixer control
3593 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3594 struct snd_ctl_elem_value *ucontrol)
3596 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3597 const char *pin = (const char *)kcontrol->private_value;
3600 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3601 ret = __snd_soc_dapm_set_pin(&card->dapm, pin,
3602 !!ucontrol->value.integer.value[0]);
3603 mutex_unlock(&card->dapm_mutex);
3605 snd_soc_dapm_sync(&card->dapm);
3608 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3610 struct snd_soc_dapm_widget *
3611 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3612 const struct snd_soc_dapm_widget *widget)
3614 enum snd_soc_dapm_direction dir;
3615 struct snd_soc_dapm_widget *w;
3619 if ((w = dapm_cnew_widget(widget)) == NULL)
3620 return ERR_PTR(-ENOMEM);
3623 case snd_soc_dapm_regulator_supply:
3624 w->regulator = devm_regulator_get(dapm->dev, w->name);
3625 if (IS_ERR(w->regulator)) {
3626 ret = PTR_ERR(w->regulator);
3627 goto request_failed;
3630 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3631 ret = regulator_allow_bypass(w->regulator, true);
3634 "ASoC: Failed to bypass %s: %d\n",
3638 case snd_soc_dapm_pinctrl:
3639 w->pinctrl = devm_pinctrl_get(dapm->dev);
3640 if (IS_ERR(w->pinctrl)) {
3641 ret = PTR_ERR(w->pinctrl);
3642 goto request_failed;
3645 case snd_soc_dapm_clock_supply:
3646 w->clk = devm_clk_get(dapm->dev, w->name);
3647 if (IS_ERR(w->clk)) {
3648 ret = PTR_ERR(w->clk);
3649 goto request_failed;
3656 prefix = soc_dapm_prefix(dapm);
3658 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3660 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3661 if (w->name == NULL) {
3662 kfree_const(w->sname);
3664 return ERR_PTR(-ENOMEM);
3668 case snd_soc_dapm_mic:
3669 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3670 w->power_check = dapm_generic_check_power;
3672 case snd_soc_dapm_input:
3673 if (!dapm->card->fully_routed)
3674 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3675 w->power_check = dapm_generic_check_power;
3677 case snd_soc_dapm_spk:
3678 case snd_soc_dapm_hp:
3679 w->is_ep = SND_SOC_DAPM_EP_SINK;
3680 w->power_check = dapm_generic_check_power;
3682 case snd_soc_dapm_output:
3683 if (!dapm->card->fully_routed)
3684 w->is_ep = SND_SOC_DAPM_EP_SINK;
3685 w->power_check = dapm_generic_check_power;
3687 case snd_soc_dapm_vmid:
3688 case snd_soc_dapm_siggen:
3689 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3690 w->power_check = dapm_always_on_check_power;
3692 case snd_soc_dapm_sink:
3693 w->is_ep = SND_SOC_DAPM_EP_SINK;
3694 w->power_check = dapm_always_on_check_power;
3697 case snd_soc_dapm_mux:
3698 case snd_soc_dapm_demux:
3699 case snd_soc_dapm_switch:
3700 case snd_soc_dapm_mixer:
3701 case snd_soc_dapm_mixer_named_ctl:
3702 case snd_soc_dapm_adc:
3703 case snd_soc_dapm_aif_out:
3704 case snd_soc_dapm_dac:
3705 case snd_soc_dapm_aif_in:
3706 case snd_soc_dapm_pga:
3707 case snd_soc_dapm_buffer:
3708 case snd_soc_dapm_scheduler:
3709 case snd_soc_dapm_effect:
3710 case snd_soc_dapm_src:
3711 case snd_soc_dapm_asrc:
3712 case snd_soc_dapm_encoder:
3713 case snd_soc_dapm_decoder:
3714 case snd_soc_dapm_out_drv:
3715 case snd_soc_dapm_micbias:
3716 case snd_soc_dapm_line:
3717 case snd_soc_dapm_dai_link:
3718 case snd_soc_dapm_dai_out:
3719 case snd_soc_dapm_dai_in:
3720 w->power_check = dapm_generic_check_power;
3722 case snd_soc_dapm_supply:
3723 case snd_soc_dapm_regulator_supply:
3724 case snd_soc_dapm_pinctrl:
3725 case snd_soc_dapm_clock_supply:
3726 case snd_soc_dapm_kcontrol:
3728 w->power_check = dapm_supply_check_power;
3731 w->power_check = dapm_always_on_check_power;
3736 INIT_LIST_HEAD(&w->list);
3737 INIT_LIST_HEAD(&w->dirty);
3738 list_add_tail(&w->list, &dapm->card->widgets);
3740 snd_soc_dapm_for_each_direction(dir) {
3741 INIT_LIST_HEAD(&w->edges[dir]);
3742 w->endpoints[dir] = -1;
3745 /* machine layer sets up unconnected pins and insertions */
3750 if (ret != -EPROBE_DEFER)
3751 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3754 kfree_const(w->sname);
3756 return ERR_PTR(ret);
3760 * snd_soc_dapm_new_control - create new dapm control
3761 * @dapm: DAPM context
3762 * @widget: widget template
3764 * Creates new DAPM control based upon a template.
3766 * Returns a widget pointer on success or an error pointer on failure
3768 struct snd_soc_dapm_widget *
3769 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3770 const struct snd_soc_dapm_widget *widget)
3772 struct snd_soc_dapm_widget *w;
3774 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3775 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3776 mutex_unlock(&dapm->card->dapm_mutex);
3780 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3783 * snd_soc_dapm_new_controls - create new dapm controls
3784 * @dapm: DAPM context
3785 * @widget: widget array
3786 * @num: number of widgets
3788 * Creates new DAPM controls based upon the templates.
3790 * Returns 0 for success else error.
3792 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3793 const struct snd_soc_dapm_widget *widget,
3796 struct snd_soc_dapm_widget *w;
3800 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3801 for (i = 0; i < num; i++) {
3802 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3809 mutex_unlock(&dapm->card->dapm_mutex);
3812 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3815 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3816 struct snd_pcm_substream *substream)
3818 struct snd_soc_dapm_path *path;
3819 struct snd_soc_dai *source, *sink;
3820 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3821 struct snd_pcm_hw_params *params = NULL;
3822 const struct snd_soc_pcm_stream *config = NULL;
3823 struct snd_pcm_runtime *runtime = NULL;
3827 params = kzalloc(sizeof(*params), GFP_KERNEL);
3831 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3837 substream->runtime = runtime;
3839 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3840 snd_soc_dapm_widget_for_each_source_path(w, path) {
3841 source = path->source->priv;
3843 ret = snd_soc_dai_startup(source, substream);
3845 dev_err(source->dev,
3846 "ASoC: startup() failed: %d\n", ret);
3852 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3853 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3854 sink = path->sink->priv;
3856 ret = snd_soc_dai_startup(sink, substream);
3859 "ASoC: startup() failed: %d\n", ret);
3865 substream->hw_opened = 1;
3868 * Note: getting the config after .startup() gives a chance to
3869 * either party on the link to alter the configuration if
3872 config = rtd->dai_link->params + rtd->params_select;
3873 if (WARN_ON(!config)) {
3874 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3879 /* Be a little careful as we don't want to overflow the mask array */
3880 if (config->formats) {
3881 fmt = ffs(config->formats) - 1;
3883 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3890 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3891 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3893 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3895 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3896 = config->channels_min;
3897 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3898 = config->channels_max;
3900 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3901 snd_soc_dapm_widget_for_each_source_path(w, path) {
3902 source = path->source->priv;
3904 ret = snd_soc_dai_hw_params(source, substream, params);
3908 dapm_update_dai_unlocked(substream, params, source);
3911 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3912 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3913 sink = path->sink->priv;
3915 ret = snd_soc_dai_hw_params(sink, substream, params);
3919 dapm_update_dai_unlocked(substream, params, sink);
3922 runtime->format = params_format(params);
3923 runtime->subformat = params_subformat(params);
3924 runtime->channels = params_channels(params);
3925 runtime->rate = params_rate(params);
3932 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3933 struct snd_kcontrol *kcontrol, int event)
3935 struct snd_soc_dapm_path *path;
3936 struct snd_soc_dai *source, *sink;
3937 struct snd_pcm_substream *substream = w->priv;
3938 int ret = 0, saved_stream = substream->stream;
3940 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3941 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3945 case SND_SOC_DAPM_PRE_PMU:
3946 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3952 case SND_SOC_DAPM_POST_PMU:
3953 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3954 sink = path->sink->priv;
3956 ret = snd_soc_dai_digital_mute(sink, 0,
3957 SNDRV_PCM_STREAM_PLAYBACK);
3958 if (ret != 0 && ret != -ENOTSUPP)
3960 "ASoC: Failed to unmute: %d\n", ret);
3965 case SND_SOC_DAPM_PRE_PMD:
3966 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3967 sink = path->sink->priv;
3969 ret = snd_soc_dai_digital_mute(sink, 1,
3970 SNDRV_PCM_STREAM_PLAYBACK);
3971 if (ret != 0 && ret != -ENOTSUPP)
3973 "ASoC: Failed to mute: %d\n", ret);
3977 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3978 snd_soc_dapm_widget_for_each_source_path(w, path) {
3979 source = path->source->priv;
3980 snd_soc_dai_hw_free(source, substream);
3983 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3984 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3985 sink = path->sink->priv;
3986 snd_soc_dai_hw_free(sink, substream);
3989 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3990 snd_soc_dapm_widget_for_each_source_path(w, path) {
3991 source = path->source->priv;
3993 snd_soc_dai_shutdown(source, substream);
3996 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3997 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3998 sink = path->sink->priv;
4000 snd_soc_dai_shutdown(sink, substream);
4004 case SND_SOC_DAPM_POST_PMD:
4005 kfree(substream->runtime);
4009 WARN(1, "Unknown event %d\n", event);
4014 /* Restore the substream direction */
4015 substream->stream = saved_stream;
4019 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4020 struct snd_ctl_elem_value *ucontrol)
4022 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4023 struct snd_soc_pcm_runtime *rtd = w->priv;
4025 ucontrol->value.enumerated.item[0] = rtd->params_select;
4030 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4031 struct snd_ctl_elem_value *ucontrol)
4033 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4034 struct snd_soc_pcm_runtime *rtd = w->priv;
4036 /* Can't change the config when widget is already powered */
4040 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4043 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4046 rtd->params_select = ucontrol->value.enumerated.item[0];
4052 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4053 unsigned long *private_value,
4055 const char **w_param_text)
4059 devm_kfree(card->dev, (void *)*private_value);
4064 for (count = 0 ; count < num_params; count++)
4065 devm_kfree(card->dev, (void *)w_param_text[count]);
4066 devm_kfree(card->dev, w_param_text);
4069 static struct snd_kcontrol_new *
4070 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4072 const struct snd_soc_pcm_stream *params,
4073 int num_params, const char **w_param_text,
4074 unsigned long *private_value)
4076 struct soc_enum w_param_enum[] = {
4077 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4079 struct snd_kcontrol_new kcontrol_dai_link[] = {
4080 SOC_ENUM_EXT(NULL, w_param_enum[0],
4081 snd_soc_dapm_dai_link_get,
4082 snd_soc_dapm_dai_link_put),
4084 struct snd_kcontrol_new *kcontrol_news;
4085 const struct snd_soc_pcm_stream *config = params;
4088 for (count = 0 ; count < num_params; count++) {
4089 if (!config->stream_name) {
4090 dev_warn(card->dapm.dev,
4091 "ASoC: anonymous config %d for dai link %s\n",
4093 w_param_text[count] =
4094 devm_kasprintf(card->dev, GFP_KERNEL,
4095 "Anonymous Configuration %d",
4098 w_param_text[count] = devm_kmemdup(card->dev,
4099 config->stream_name,
4100 strlen(config->stream_name) + 1,
4103 if (!w_param_text[count])
4104 goto outfree_w_param;
4108 w_param_enum[0].items = num_params;
4109 w_param_enum[0].texts = w_param_text;
4112 (unsigned long) devm_kmemdup(card->dev,
4113 (void *)(kcontrol_dai_link[0].private_value),
4114 sizeof(struct soc_enum), GFP_KERNEL);
4115 if (!*private_value) {
4116 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4118 goto outfree_w_param;
4120 kcontrol_dai_link[0].private_value = *private_value;
4121 /* duplicate kcontrol_dai_link on heap so that memory persists */
4122 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4123 sizeof(struct snd_kcontrol_new),
4125 if (!kcontrol_news) {
4126 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4128 goto outfree_w_param;
4130 return kcontrol_news;
4133 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4137 static struct snd_soc_dapm_widget *
4138 snd_soc_dapm_new_dai(struct snd_soc_card *card,
4139 struct snd_pcm_substream *substream,
4142 struct snd_soc_pcm_runtime *rtd = substream->private_data;
4143 struct snd_soc_dapm_widget template;
4144 struct snd_soc_dapm_widget *w;
4145 const char **w_param_text;
4146 unsigned long private_value = 0;
4150 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4151 rtd->dai_link->name, id);
4153 return ERR_PTR(-ENOMEM);
4155 memset(&template, 0, sizeof(template));
4156 template.reg = SND_SOC_NOPM;
4157 template.id = snd_soc_dapm_dai_link;
4158 template.name = link_name;
4159 template.event = snd_soc_dai_link_event;
4160 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4161 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4162 template.kcontrol_news = NULL;
4164 /* allocate memory for control, only in case of multiple configs */
4165 if (rtd->dai_link->num_params > 1) {
4166 w_param_text = devm_kcalloc(card->dev,
4167 rtd->dai_link->num_params,
4168 sizeof(char *), GFP_KERNEL);
4169 if (!w_param_text) {
4174 template.num_kcontrols = 1;
4175 template.kcontrol_news =
4176 snd_soc_dapm_alloc_kcontrol(card,
4178 rtd->dai_link->params,
4179 rtd->dai_link->num_params,
4180 w_param_text, &private_value);
4181 if (!template.kcontrol_news) {
4186 w_param_text = NULL;
4188 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4190 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4193 goto outfree_kcontrol_news;
4196 w->priv = substream;
4200 outfree_kcontrol_news:
4201 devm_kfree(card->dev, (void *)template.kcontrol_news);
4202 snd_soc_dapm_free_kcontrol(card, &private_value,
4203 rtd->dai_link->num_params, w_param_text);
4205 devm_kfree(card->dev, link_name);
4206 return ERR_PTR(ret);
4209 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4210 struct snd_soc_dai *dai)
4212 struct snd_soc_dapm_widget template;
4213 struct snd_soc_dapm_widget *w;
4215 WARN_ON(dapm->dev != dai->dev);
4217 memset(&template, 0, sizeof(template));
4218 template.reg = SND_SOC_NOPM;
4220 if (dai->driver->playback.stream_name) {
4221 template.id = snd_soc_dapm_dai_in;
4222 template.name = dai->driver->playback.stream_name;
4223 template.sname = dai->driver->playback.stream_name;
4225 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4228 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4233 dai->playback_widget = w;
4236 if (dai->driver->capture.stream_name) {
4237 template.id = snd_soc_dapm_dai_out;
4238 template.name = dai->driver->capture.stream_name;
4239 template.sname = dai->driver->capture.stream_name;
4241 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4244 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4249 dai->capture_widget = w;
4255 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4257 struct snd_soc_dapm_widget *dai_w, *w;
4258 struct snd_soc_dapm_widget *src, *sink;
4259 struct snd_soc_dai *dai;
4261 /* For each DAI widget... */
4262 list_for_each_entry(dai_w, &card->widgets, list) {
4263 switch (dai_w->id) {
4264 case snd_soc_dapm_dai_in:
4265 case snd_soc_dapm_dai_out:
4271 /* let users know there is no DAI to link */
4273 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4280 /* ...find all widgets with the same stream and link them */
4281 list_for_each_entry(w, &card->widgets, list) {
4282 if (w->dapm != dai_w->dapm)
4286 case snd_soc_dapm_dai_in:
4287 case snd_soc_dapm_dai_out:
4293 if (!w->sname || !strstr(w->sname, dai_w->sname))
4296 if (dai_w->id == snd_soc_dapm_dai_in) {
4303 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4304 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4311 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
4312 struct snd_soc_pcm_runtime *rtd)
4314 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
4315 struct snd_soc_dai *codec_dai;
4316 struct snd_soc_dapm_widget *playback = NULL, *capture = NULL;
4317 struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu;
4318 struct snd_pcm_substream *substream;
4319 struct snd_pcm_str *streams = rtd->pcm->streams;
4322 if (rtd->dai_link->params) {
4323 playback_cpu = cpu_dai->capture_widget;
4324 capture_cpu = cpu_dai->playback_widget;
4326 playback = cpu_dai->playback_widget;
4327 capture = cpu_dai->capture_widget;
4328 playback_cpu = playback;
4329 capture_cpu = capture;
4332 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4333 /* connect BE DAI playback if widgets are valid */
4334 codec = codec_dai->playback_widget;
4336 if (playback_cpu && codec) {
4338 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4339 playback = snd_soc_dapm_new_dai(card, substream,
4341 if (IS_ERR(playback)) {
4343 "ASoC: Failed to create DAI %s: %ld\n",
4349 snd_soc_dapm_add_path(&card->dapm, playback_cpu,
4350 playback, NULL, NULL);
4353 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4354 cpu_dai->component->name, playback_cpu->name,
4355 codec_dai->component->name, codec->name);
4357 snd_soc_dapm_add_path(&card->dapm, playback, codec,
4362 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4363 /* connect BE DAI capture if widgets are valid */
4364 codec = codec_dai->capture_widget;
4366 if (codec && capture_cpu) {
4368 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4369 capture = snd_soc_dapm_new_dai(card, substream,
4371 if (IS_ERR(capture)) {
4373 "ASoC: Failed to create DAI %s: %ld\n",
4379 snd_soc_dapm_add_path(&card->dapm, capture,
4380 capture_cpu, NULL, NULL);
4383 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4384 codec_dai->component->name, codec->name,
4385 cpu_dai->component->name, capture_cpu->name);
4387 snd_soc_dapm_add_path(&card->dapm, codec, capture,
4393 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4396 struct snd_soc_dapm_widget *w;
4399 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
4400 w = dai->playback_widget;
4402 w = dai->capture_widget;
4405 dapm_mark_dirty(w, "stream event");
4407 if (w->id == snd_soc_dapm_dai_in) {
4408 ep = SND_SOC_DAPM_EP_SOURCE;
4409 dapm_widget_invalidate_input_paths(w);
4411 ep = SND_SOC_DAPM_EP_SINK;
4412 dapm_widget_invalidate_output_paths(w);
4416 case SND_SOC_DAPM_STREAM_START:
4420 case SND_SOC_DAPM_STREAM_STOP:
4424 case SND_SOC_DAPM_STREAM_SUSPEND:
4425 case SND_SOC_DAPM_STREAM_RESUME:
4426 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4427 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4433 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4435 struct snd_soc_pcm_runtime *rtd;
4437 /* for each BE DAI link... */
4438 for_each_card_rtds(card, rtd) {
4440 * dynamic FE links have no fixed DAI mapping.
4441 * CODEC<->CODEC links have no direct connection.
4443 if (rtd->dai_link->dynamic)
4446 dapm_connect_dai_link_widgets(card, rtd);
4450 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4453 struct snd_soc_dai *codec_dai;
4456 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
4457 for_each_rtd_codec_dai(rtd, i, codec_dai)
4458 soc_dapm_dai_stream_event(codec_dai, stream, event);
4460 dapm_power_widgets(rtd->card, event);
4464 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4465 * @rtd: PCM runtime data
4466 * @stream: stream name
4467 * @event: stream event
4469 * Sends a stream event to the dapm core. The core then makes any
4470 * necessary widget power changes.
4472 * Returns 0 for success else error.
4474 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4477 struct snd_soc_card *card = rtd->card;
4479 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4480 soc_dapm_stream_event(rtd, stream, event);
4481 mutex_unlock(&card->dapm_mutex);
4485 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4486 * @dapm: DAPM context
4489 * Enables input/output pin and its parents or children widgets iff there is
4490 * a valid audio route and active audio stream.
4492 * Requires external locking.
4494 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4495 * do any widget power switching.
4497 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4500 return snd_soc_dapm_set_pin(dapm, pin, 1);
4502 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4505 * snd_soc_dapm_enable_pin - enable pin.
4506 * @dapm: DAPM context
4509 * Enables input/output pin and its parents or children widgets iff there is
4510 * a valid audio route and active audio stream.
4512 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4513 * do any widget power switching.
4515 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4519 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4521 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4523 mutex_unlock(&dapm->card->dapm_mutex);
4527 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4530 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4531 * @dapm: DAPM context
4534 * Enables input/output pin regardless of any other state. This is
4535 * intended for use with microphone bias supplies used in microphone
4538 * Requires external locking.
4540 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4541 * do any widget power switching.
4543 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4546 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4549 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4553 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4554 if (!w->connected) {
4556 * w->force does not affect the number of input or output paths,
4557 * so we only have to recheck if w->connected is changed
4559 dapm_widget_invalidate_input_paths(w);
4560 dapm_widget_invalidate_output_paths(w);
4564 dapm_mark_dirty(w, "force enable");
4568 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4571 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4572 * @dapm: DAPM context
4575 * Enables input/output pin regardless of any other state. This is
4576 * intended for use with microphone bias supplies used in microphone
4579 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4580 * do any widget power switching.
4582 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4587 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4589 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4591 mutex_unlock(&dapm->card->dapm_mutex);
4595 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4598 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4599 * @dapm: DAPM context
4602 * Disables input/output pin and its parents or children widgets.
4604 * Requires external locking.
4606 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4607 * do any widget power switching.
4609 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4612 return snd_soc_dapm_set_pin(dapm, pin, 0);
4614 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4617 * snd_soc_dapm_disable_pin - disable pin.
4618 * @dapm: DAPM context
4621 * Disables input/output pin and its parents or children widgets.
4623 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4624 * do any widget power switching.
4626 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4631 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4633 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4635 mutex_unlock(&dapm->card->dapm_mutex);
4639 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4642 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4643 * @dapm: DAPM context
4646 * Marks the specified pin as being not connected, disabling it along
4647 * any parent or child widgets. At present this is identical to
4648 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4649 * additional things such as disabling controls which only affect
4650 * paths through the pin.
4652 * Requires external locking.
4654 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4655 * do any widget power switching.
4657 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4660 return snd_soc_dapm_set_pin(dapm, pin, 0);
4662 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4665 * snd_soc_dapm_nc_pin - permanently disable pin.
4666 * @dapm: DAPM context
4669 * Marks the specified pin as being not connected, disabling it along
4670 * any parent or child widgets. At present this is identical to
4671 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4672 * additional things such as disabling controls which only affect
4673 * paths through the pin.
4675 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4676 * do any widget power switching.
4678 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4682 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4684 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4686 mutex_unlock(&dapm->card->dapm_mutex);
4690 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4693 * snd_soc_dapm_get_pin_status - get audio pin status
4694 * @dapm: DAPM context
4695 * @pin: audio signal pin endpoint (or start point)
4697 * Get audio pin status - connected or disconnected.
4699 * Returns 1 for connected otherwise 0.
4701 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4704 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4707 return w->connected;
4711 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4714 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4715 * @dapm: DAPM context
4716 * @pin: audio signal pin endpoint (or start point)
4718 * Mark the given endpoint or pin as ignoring suspend. When the
4719 * system is disabled a path between two endpoints flagged as ignoring
4720 * suspend will not be disabled. The path must already be enabled via
4721 * normal means at suspend time, it will not be turned on if it was not
4724 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4727 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4730 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4734 w->ignore_suspend = 1;
4738 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4741 * snd_soc_dapm_free - free dapm resources
4742 * @dapm: DAPM context
4744 * Free all dapm widgets and resources.
4746 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4748 dapm_debugfs_cleanup(dapm);
4749 dapm_free_widgets(dapm);
4750 list_del(&dapm->list);
4752 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4754 void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4755 struct snd_soc_card *card,
4756 struct snd_soc_component *component)
4759 dapm->component = component;
4760 dapm->bias_level = SND_SOC_BIAS_OFF;
4763 dapm->dev = component->dev;
4764 dapm->idle_bias_off = !component->driver->idle_bias_on,
4765 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4767 dapm->dev = card->dev;
4770 INIT_LIST_HEAD(&dapm->list);
4771 list_add(&dapm->list, &card->dapm_list);
4773 EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4775 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4777 struct snd_soc_card *card = dapm->card;
4778 struct snd_soc_dapm_widget *w;
4779 LIST_HEAD(down_list);
4782 mutex_lock(&card->dapm_mutex);
4784 list_for_each_entry(w, &dapm->card->widgets, list) {
4785 if (w->dapm != dapm)
4788 dapm_seq_insert(w, &down_list, false);
4794 /* If there were no widgets to power down we're already in
4798 if (dapm->bias_level == SND_SOC_BIAS_ON)
4799 snd_soc_dapm_set_bias_level(dapm,
4800 SND_SOC_BIAS_PREPARE);
4801 dapm_seq_run(card, &down_list, 0, false);
4802 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4803 snd_soc_dapm_set_bias_level(dapm,
4804 SND_SOC_BIAS_STANDBY);
4807 mutex_unlock(&card->dapm_mutex);
4811 * snd_soc_dapm_shutdown - callback for system shutdown
4813 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4815 struct snd_soc_dapm_context *dapm;
4817 list_for_each_entry(dapm, &card->dapm_list, list) {
4818 if (dapm != &card->dapm) {
4819 soc_dapm_shutdown_dapm(dapm);
4820 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4821 snd_soc_dapm_set_bias_level(dapm,
4826 soc_dapm_shutdown_dapm(&card->dapm);
4827 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4828 snd_soc_dapm_set_bias_level(&card->dapm,
4832 /* Module information */
4833 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4834 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4835 MODULE_LICENSE("GPL");