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 for_each_card_widgets(card, w) {
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 for_each_card_widgets(card, w) {
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 unsigned int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg)
621 if (!dapm->component)
623 return snd_soc_component_read(dapm->component, reg);
626 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
627 int reg, unsigned int mask, unsigned int value)
629 if (!dapm->component)
631 return snd_soc_component_update_bits(dapm->component, reg,
635 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
636 int reg, unsigned int mask, unsigned int value)
638 if (!dapm->component)
640 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
643 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
646 snd_soc_component_async_complete(dapm->component);
649 static struct snd_soc_dapm_widget *
650 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
652 struct snd_soc_dapm_widget *w = wcache->widget;
653 struct list_head *wlist;
658 wlist = &w->dapm->card->widgets;
660 list_for_each_entry_from(w, wlist, list) {
661 if (!strcmp(name, w->name))
672 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
673 struct snd_soc_dapm_widget *w)
679 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
680 * @dapm: The DAPM context for which to set the level
681 * @level: The level to set
683 * Forces the DAPM bias level to a specific state. It will call the bias level
684 * callback of DAPM context with the specified level. This will even happen if
685 * the context is already at the same level. Furthermore it will not go through
686 * the normal bias level sequencing, meaning any intermediate states between the
687 * current and the target state will not be entered.
689 * Note that the change in bias level is only temporary and the next time
690 * snd_soc_dapm_sync() is called the state will be set to the level as
691 * determined by the DAPM core. The function is mainly intended to be used to
692 * used during probe or resume from suspend to power up the device so
693 * initialization can be done, before the DAPM core takes over.
695 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
696 enum snd_soc_bias_level level)
701 ret = snd_soc_component_set_bias_level(dapm->component, level);
704 dapm->bias_level = level;
708 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
711 * snd_soc_dapm_set_bias_level - set the bias level for the system
712 * @dapm: DAPM context
713 * @level: level to configure
715 * Configure the bias (power) levels for the SoC audio device.
717 * Returns 0 for success else error.
719 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
720 enum snd_soc_bias_level level)
722 struct snd_soc_card *card = dapm->card;
725 trace_snd_soc_bias_level_start(card, level);
727 ret = snd_soc_card_set_bias_level(card, dapm, level);
731 if (!card || dapm != &card->dapm)
732 ret = snd_soc_dapm_force_bias_level(dapm, level);
737 ret = snd_soc_card_set_bias_level_post(card, dapm, level);
739 trace_snd_soc_bias_level_done(card, level);
744 /* connect mux widget to its interconnecting audio paths */
745 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
746 struct snd_soc_dapm_path *path, const char *control_name,
747 struct snd_soc_dapm_widget *w)
749 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
750 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
751 unsigned int val, item;
754 if (e->reg != SND_SOC_NOPM) {
755 val = soc_dapm_read(dapm, e->reg);
756 val = (val >> e->shift_l) & e->mask;
757 item = snd_soc_enum_val_to_item(e, val);
759 /* since a virtual mux has no backing registers to
760 * decide which path to connect, it will try to match
761 * with the first enumeration. This is to ensure
762 * that the default mux choice (the first) will be
763 * correctly powered up during initialization.
768 i = match_string(e->texts, e->items, control_name);
772 path->name = e->texts[i];
773 path->connect = (i == item);
778 /* set up initial codec paths */
779 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
782 struct soc_mixer_control *mc = (struct soc_mixer_control *)
783 p->sink->kcontrol_news[i].private_value;
784 unsigned int reg = mc->reg;
785 unsigned int shift = mc->shift;
786 unsigned int max = mc->max;
787 unsigned int mask = (1 << fls(max)) - 1;
788 unsigned int invert = mc->invert;
791 if (reg != SND_SOC_NOPM) {
792 val = soc_dapm_read(p->sink->dapm, reg);
794 * The nth_path argument allows this function to know
795 * which path of a kcontrol it is setting the initial
796 * status for. Ideally this would support any number
797 * of paths and channels. But since kcontrols only come
798 * in mono and stereo variants, we are limited to 2
801 * The following code assumes for stereo controls the
802 * first path is the left channel, and all remaining
803 * paths are the right channel.
805 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
807 val = soc_dapm_read(p->sink->dapm, mc->rreg);
808 val = (val >> mc->rshift) & mask;
810 val = (val >> shift) & mask;
816 /* since a virtual mixer has no backing registers to
817 * decide which path to connect, it will try to match
818 * with initial state. This is to ensure
819 * that the default mixer choice will be
820 * correctly powered up during initialization.
826 /* connect mixer widget to its interconnecting audio paths */
827 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
828 struct snd_soc_dapm_path *path, const char *control_name)
832 /* search for mixer kcontrol */
833 for (i = 0; i < path->sink->num_kcontrols; i++) {
834 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
835 path->name = path->sink->kcontrol_news[i].name;
836 dapm_set_mixer_path_status(path, i, nth_path++);
843 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
844 struct snd_soc_dapm_widget *kcontrolw,
845 const struct snd_kcontrol_new *kcontrol_new,
846 struct snd_kcontrol **kcontrol)
848 struct snd_soc_dapm_widget *w;
853 for_each_card_widgets(dapm->card, w) {
854 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
856 for (i = 0; i < w->num_kcontrols; i++) {
857 if (&w->kcontrol_news[i] == kcontrol_new) {
859 *kcontrol = w->kcontrols[i];
869 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
870 * create it. Either way, add the widget into the control's widget list
872 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
875 struct snd_soc_dapm_context *dapm = w->dapm;
876 struct snd_card *card = dapm->card->snd_card;
880 struct snd_kcontrol *kcontrol;
881 bool wname_in_long_name, kcname_in_long_name;
882 char *long_name = NULL;
886 prefix = soc_dapm_prefix(dapm);
888 prefix_len = strlen(prefix) + 1;
892 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
897 wname_in_long_name = false;
898 kcname_in_long_name = true;
901 case snd_soc_dapm_switch:
902 case snd_soc_dapm_mixer:
903 case snd_soc_dapm_pga:
904 case snd_soc_dapm_effect:
905 case snd_soc_dapm_out_drv:
906 wname_in_long_name = true;
907 kcname_in_long_name = true;
909 case snd_soc_dapm_mixer_named_ctl:
910 wname_in_long_name = false;
911 kcname_in_long_name = true;
913 case snd_soc_dapm_demux:
914 case snd_soc_dapm_mux:
915 wname_in_long_name = true;
916 kcname_in_long_name = false;
923 if (wname_in_long_name && kcname_in_long_name) {
925 * The control will get a prefix from the control
926 * creation process but we're also using the same
927 * prefix for widgets so cut the prefix off the
928 * front of the widget name.
930 long_name = kasprintf(GFP_KERNEL, "%s %s",
931 w->name + prefix_len,
932 w->kcontrol_news[kci].name);
933 if (long_name == NULL)
937 } else if (wname_in_long_name) {
939 name = w->name + prefix_len;
942 name = w->kcontrol_news[kci].name;
945 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
952 kcontrol->private_free = dapm_kcontrol_free;
954 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
956 snd_ctl_free_one(kcontrol);
960 ret = snd_ctl_add(card, kcontrol);
963 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
969 ret = dapm_kcontrol_add_widget(kcontrol, w);
971 w->kcontrols[kci] = kcontrol;
979 /* create new dapm mixer control */
980 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
983 struct snd_soc_dapm_path *path;
984 struct dapm_kcontrol_data *data;
987 for (i = 0; i < w->num_kcontrols; i++) {
989 snd_soc_dapm_widget_for_each_source_path(w, path) {
990 /* mixer/mux paths name must match control name */
991 if (path->name != (char *)w->kcontrol_news[i].name)
994 if (!w->kcontrols[i]) {
995 ret = dapm_create_or_share_kcontrol(w, i);
1000 dapm_kcontrol_add_path(w->kcontrols[i], path);
1002 data = snd_kcontrol_chip(w->kcontrols[i]);
1004 snd_soc_dapm_add_path(data->widget->dapm,
1014 /* create new dapm mux control */
1015 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1017 struct snd_soc_dapm_context *dapm = w->dapm;
1018 enum snd_soc_dapm_direction dir;
1019 struct snd_soc_dapm_path *path;
1024 case snd_soc_dapm_mux:
1025 dir = SND_SOC_DAPM_DIR_OUT;
1028 case snd_soc_dapm_demux:
1029 dir = SND_SOC_DAPM_DIR_IN;
1036 if (w->num_kcontrols != 1) {
1038 "ASoC: %s %s has incorrect number of controls\n", type,
1043 if (list_empty(&w->edges[dir])) {
1044 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1048 ret = dapm_create_or_share_kcontrol(w, 0);
1052 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1054 dapm_kcontrol_add_path(w->kcontrols[0], path);
1060 /* create new dapm volume control */
1061 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1065 for (i = 0; i < w->num_kcontrols; i++) {
1066 ret = dapm_create_or_share_kcontrol(w, i);
1074 /* create new dapm dai link control */
1075 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1078 struct snd_kcontrol *kcontrol;
1079 struct snd_soc_dapm_context *dapm = w->dapm;
1080 struct snd_card *card = dapm->card->snd_card;
1081 struct snd_soc_pcm_runtime *rtd = w->priv;
1083 /* create control for links with > 1 config */
1084 if (rtd->dai_link->num_params <= 1)
1088 for (i = 0; i < w->num_kcontrols; i++) {
1089 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1091 ret = snd_ctl_add(card, kcontrol);
1094 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1095 w->name, w->kcontrol_news[i].name, ret);
1098 kcontrol->private_data = w;
1099 w->kcontrols[i] = kcontrol;
1105 /* We implement power down on suspend by checking the power state of
1106 * the ALSA card - when we are suspending the ALSA state for the card
1109 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1111 int level = snd_power_get_state(widget->dapm->card->snd_card);
1114 case SNDRV_CTL_POWER_D3hot:
1115 case SNDRV_CTL_POWER_D3cold:
1116 if (widget->ignore_suspend)
1117 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1119 return widget->ignore_suspend;
1125 static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list)
1130 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1131 struct list_head *widgets)
1133 struct snd_soc_dapm_widget *w;
1134 struct list_head *it;
1135 unsigned int size = 0;
1138 list_for_each(it, widgets)
1141 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1145 list_for_each_entry(w, widgets, work_list)
1146 (*list)->widgets[i++] = w;
1148 (*list)->num_widgets = i;
1154 * Recursively reset the cached number of inputs or outputs for the specified
1155 * widget and all widgets that can be reached via incoming or outcoming paths
1158 static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1159 enum snd_soc_dapm_direction dir)
1161 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1162 struct snd_soc_dapm_path *path;
1164 widget->endpoints[dir] = -1;
1166 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1167 if (path->weak || path->is_supply)
1173 if (path->connect) {
1175 invalidate_paths_ep(path->node[dir], dir);
1182 * Common implementation for is_connected_output_ep() and
1183 * is_connected_input_ep(). The function is inlined since the combined size of
1184 * the two specialized functions is only marginally larger then the size of the
1185 * generic function and at the same time the fast path of the specialized
1186 * functions is significantly smaller than the generic function.
1188 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1189 struct list_head *list, enum snd_soc_dapm_direction dir,
1190 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1191 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1192 enum snd_soc_dapm_direction)),
1193 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1194 enum snd_soc_dapm_direction))
1196 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1197 struct snd_soc_dapm_path *path;
1200 if (widget->endpoints[dir] >= 0)
1201 return widget->endpoints[dir];
1203 DAPM_UPDATE_STAT(widget, path_checks);
1205 /* do we need to add this widget to the list ? */
1207 list_add_tail(&widget->work_list, list);
1209 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1211 custom_stop_condition = NULL;
1214 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1215 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1216 return widget->endpoints[dir];
1219 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1220 DAPM_UPDATE_STAT(widget, neighbour_checks);
1222 if (path->weak || path->is_supply)
1228 trace_snd_soc_dapm_path(widget, dir, path);
1230 if (path->connect) {
1232 con += fn(path->node[dir], list, custom_stop_condition);
1237 widget->endpoints[dir] = con;
1243 * Recursively check for a completed path to an active or physically connected
1244 * output widget. Returns number of complete paths.
1246 * Optionally, can be supplied with a function acting as a stopping condition.
1247 * This function takes the dapm widget currently being examined and the walk
1248 * direction as an arguments, it should return true if widgets from that point
1249 * in the graph onwards should not be added to the widget list.
1251 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1252 struct list_head *list,
1253 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1254 enum snd_soc_dapm_direction))
1256 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1257 is_connected_output_ep, custom_stop_condition);
1261 * Recursively check for a completed path to an active or physically connected
1262 * input widget. Returns number of complete paths.
1264 * Optionally, can be supplied with a function acting as a stopping condition.
1265 * This function takes the dapm widget currently being examined and the walk
1266 * direction as an arguments, it should return true if the walk should be
1267 * stopped and false otherwise.
1269 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1270 struct list_head *list,
1271 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1272 enum snd_soc_dapm_direction))
1274 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1275 is_connected_input_ep, custom_stop_condition);
1279 * snd_soc_dapm_dai_get_connected_widgets - query audio path and it's widgets.
1280 * @dai: the soc DAI.
1281 * @stream: stream direction.
1282 * @list: list of active widgets for this stream.
1283 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1284 * walk based on custom logic.
1286 * Queries DAPM graph as to whether a valid audio stream path exists for
1287 * the initial stream specified by name. This takes into account
1288 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1290 * Optionally, can be supplied with a function acting as a stopping condition.
1291 * This function takes the dapm widget currently being examined and the walk
1292 * direction as an arguments, it should return true if the walk should be
1293 * stopped and false otherwise.
1295 * Returns the number of valid paths or negative error.
1297 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1298 struct snd_soc_dapm_widget_list **list,
1299 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1300 enum snd_soc_dapm_direction))
1302 struct snd_soc_card *card = dai->component->card;
1303 struct snd_soc_dapm_widget *w;
1308 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1310 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1311 w = dai->playback_widget;
1312 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1313 paths = is_connected_output_ep(w, &widgets,
1314 custom_stop_condition);
1316 w = dai->capture_widget;
1317 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1318 paths = is_connected_input_ep(w, &widgets,
1319 custom_stop_condition);
1322 /* Drop starting point */
1323 list_del(widgets.next);
1325 ret = dapm_widget_list_create(list, &widgets);
1329 trace_snd_soc_dapm_connected(paths, stream);
1330 mutex_unlock(&card->dapm_mutex);
1335 void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
1337 dapm_widget_list_free(list);
1341 * Handler for regulator supply widget.
1343 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1344 struct snd_kcontrol *kcontrol, int event)
1348 soc_dapm_async_complete(w->dapm);
1350 if (SND_SOC_DAPM_EVENT_ON(event)) {
1351 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1352 ret = regulator_allow_bypass(w->regulator, false);
1354 dev_warn(w->dapm->dev,
1355 "ASoC: Failed to unbypass %s: %d\n",
1359 return regulator_enable(w->regulator);
1361 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1362 ret = regulator_allow_bypass(w->regulator, true);
1364 dev_warn(w->dapm->dev,
1365 "ASoC: Failed to bypass %s: %d\n",
1369 return regulator_disable_deferred(w->regulator, w->shift);
1372 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1375 * Handler for pinctrl widget.
1377 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1378 struct snd_kcontrol *kcontrol, int event)
1380 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1381 struct pinctrl *p = w->pinctrl;
1382 struct pinctrl_state *s;
1387 if (SND_SOC_DAPM_EVENT_ON(event))
1388 s = pinctrl_lookup_state(p, priv->active_state);
1390 s = pinctrl_lookup_state(p, priv->sleep_state);
1395 return pinctrl_select_state(p, s);
1397 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1400 * Handler for clock supply widget.
1402 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1403 struct snd_kcontrol *kcontrol, int event)
1408 soc_dapm_async_complete(w->dapm);
1410 if (SND_SOC_DAPM_EVENT_ON(event)) {
1411 return clk_prepare_enable(w->clk);
1413 clk_disable_unprepare(w->clk);
1419 EXPORT_SYMBOL_GPL(dapm_clock_event);
1421 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1423 if (w->power_checked)
1424 return w->new_power;
1429 w->new_power = w->power_check(w);
1431 w->power_checked = true;
1433 return w->new_power;
1436 /* Generic check to see if a widget should be powered. */
1437 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1441 DAPM_UPDATE_STAT(w, power_checks);
1443 in = is_connected_input_ep(w, NULL, NULL);
1444 out = is_connected_output_ep(w, NULL, NULL);
1445 return out != 0 && in != 0;
1448 /* Check to see if a power supply is needed */
1449 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1451 struct snd_soc_dapm_path *path;
1453 DAPM_UPDATE_STAT(w, power_checks);
1455 /* Check if one of our outputs is connected */
1456 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1457 DAPM_UPDATE_STAT(w, neighbour_checks);
1462 if (path->connected &&
1463 !path->connected(path->source, path->sink))
1466 if (dapm_widget_power_check(path->sink))
1473 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1475 return w->connected;
1478 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1479 struct snd_soc_dapm_widget *b,
1484 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1485 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1490 sort = dapm_down_seq;
1492 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1493 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1495 if (sort[a->id] != sort[b->id])
1496 return sort[a->id] - sort[b->id];
1497 if (a->subseq != b->subseq) {
1499 return a->subseq - b->subseq;
1501 return b->subseq - a->subseq;
1503 if (a->reg != b->reg)
1504 return a->reg - b->reg;
1505 if (a->dapm != b->dapm)
1506 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1511 /* Insert a widget in order into a DAPM power sequence. */
1512 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1513 struct list_head *list,
1516 struct snd_soc_dapm_widget *w;
1518 list_for_each_entry(w, list, power_list)
1519 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1520 list_add_tail(&new_widget->power_list, &w->power_list);
1524 list_add_tail(&new_widget->power_list, list);
1527 static void dapm_seq_check_event(struct snd_soc_card *card,
1528 struct snd_soc_dapm_widget *w, int event)
1530 const char *ev_name;
1534 case SND_SOC_DAPM_PRE_PMU:
1535 ev_name = "PRE_PMU";
1538 case SND_SOC_DAPM_POST_PMU:
1539 ev_name = "POST_PMU";
1542 case SND_SOC_DAPM_PRE_PMD:
1543 ev_name = "PRE_PMD";
1546 case SND_SOC_DAPM_POST_PMD:
1547 ev_name = "POST_PMD";
1550 case SND_SOC_DAPM_WILL_PMU:
1551 ev_name = "WILL_PMU";
1554 case SND_SOC_DAPM_WILL_PMD:
1555 ev_name = "WILL_PMD";
1559 WARN(1, "Unknown event %d\n", event);
1563 if (w->new_power != power)
1566 if (w->event && (w->event_flags & event)) {
1567 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1569 soc_dapm_async_complete(w->dapm);
1570 trace_snd_soc_dapm_widget_event_start(w, event);
1571 ret = w->event(w, NULL, event);
1572 trace_snd_soc_dapm_widget_event_done(w, event);
1574 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1575 ev_name, w->name, ret);
1579 /* Apply the coalesced changes from a DAPM sequence */
1580 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1581 struct list_head *pending)
1583 struct snd_soc_dapm_context *dapm;
1584 struct snd_soc_dapm_widget *w;
1586 unsigned int value = 0;
1587 unsigned int mask = 0;
1589 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1593 list_for_each_entry(w, pending, power_list) {
1594 WARN_ON(reg != w->reg || dapm != w->dapm);
1595 w->power = w->new_power;
1597 mask |= w->mask << w->shift;
1599 value |= w->on_val << w->shift;
1601 value |= w->off_val << w->shift;
1603 pop_dbg(dapm->dev, card->pop_time,
1604 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1605 w->name, reg, value, mask);
1607 /* Check for events */
1608 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1609 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1613 /* Any widget will do, they should all be updating the
1617 pop_dbg(dapm->dev, card->pop_time,
1618 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1619 value, mask, reg, card->pop_time);
1620 pop_wait(card->pop_time);
1621 soc_dapm_update_bits(dapm, reg, mask, value);
1624 list_for_each_entry(w, pending, power_list) {
1625 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1626 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1630 /* Apply a DAPM power sequence.
1632 * We walk over a pre-sorted list of widgets to apply power to. In
1633 * order to minimise the number of writes to the device required
1634 * multiple widgets will be updated in a single write where possible.
1635 * Currently anything that requires more than a single write is not
1638 static void dapm_seq_run(struct snd_soc_card *card,
1639 struct list_head *list, int event, bool power_up)
1641 struct snd_soc_dapm_widget *w, *n;
1642 struct snd_soc_dapm_context *d;
1645 int cur_subseq = -1;
1646 int cur_reg = SND_SOC_NOPM;
1647 struct snd_soc_dapm_context *cur_dapm = NULL;
1654 sort = dapm_down_seq;
1656 list_for_each_entry_safe(w, n, list, power_list) {
1659 /* Do we need to apply any queued changes? */
1660 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1661 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1662 if (!list_empty(&pending))
1663 dapm_seq_run_coalesced(card, &pending);
1665 if (cur_dapm && cur_dapm->component) {
1666 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1667 if (sort[i] == cur_sort)
1668 snd_soc_component_seq_notifier(
1669 cur_dapm->component,
1673 if (cur_dapm && w->dapm != cur_dapm)
1674 soc_dapm_async_complete(cur_dapm);
1676 INIT_LIST_HEAD(&pending);
1678 cur_subseq = INT_MIN;
1679 cur_reg = SND_SOC_NOPM;
1684 case snd_soc_dapm_pre:
1686 list_for_each_entry_safe_continue(w, n, list,
1689 if (event == SND_SOC_DAPM_STREAM_START)
1691 NULL, SND_SOC_DAPM_PRE_PMU);
1692 else if (event == SND_SOC_DAPM_STREAM_STOP)
1694 NULL, SND_SOC_DAPM_PRE_PMD);
1697 case snd_soc_dapm_post:
1699 list_for_each_entry_safe_continue(w, n, list,
1702 if (event == SND_SOC_DAPM_STREAM_START)
1704 NULL, SND_SOC_DAPM_POST_PMU);
1705 else if (event == SND_SOC_DAPM_STREAM_STOP)
1707 NULL, SND_SOC_DAPM_POST_PMD);
1711 /* Queue it up for application */
1712 cur_sort = sort[w->id];
1713 cur_subseq = w->subseq;
1716 list_move(&w->power_list, &pending);
1721 dev_err(w->dapm->dev,
1722 "ASoC: Failed to apply widget power: %d\n", ret);
1725 if (!list_empty(&pending))
1726 dapm_seq_run_coalesced(card, &pending);
1728 if (cur_dapm && cur_dapm->component) {
1729 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1730 if (sort[i] == cur_sort)
1731 snd_soc_component_seq_notifier(
1732 cur_dapm->component,
1736 for_each_card_dapms(card, d)
1737 soc_dapm_async_complete(d);
1740 static void dapm_widget_update(struct snd_soc_card *card)
1742 struct snd_soc_dapm_update *update = card->update;
1743 struct snd_soc_dapm_widget_list *wlist;
1744 struct snd_soc_dapm_widget *w = NULL;
1748 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1751 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1753 for_each_dapm_widgets(wlist, wi, w) {
1754 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1755 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1757 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1765 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1768 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1771 if (update->has_second_set) {
1772 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1773 update->mask2, update->val2);
1775 dev_err(w->dapm->dev,
1776 "ASoC: %s DAPM update failed: %d\n",
1780 for_each_dapm_widgets(wlist, wi, w) {
1781 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1782 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1784 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1790 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1791 * they're changing state.
1793 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1795 struct snd_soc_dapm_context *d = data;
1798 /* If we're off and we're not supposed to go into STANDBY */
1799 if (d->bias_level == SND_SOC_BIAS_OFF &&
1800 d->target_bias_level != SND_SOC_BIAS_OFF) {
1801 if (d->dev && cookie)
1802 pm_runtime_get_sync(d->dev);
1804 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1807 "ASoC: Failed to turn on bias: %d\n", ret);
1810 /* Prepare for a transition to ON or away from ON */
1811 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1812 d->bias_level != SND_SOC_BIAS_ON) ||
1813 (d->target_bias_level != SND_SOC_BIAS_ON &&
1814 d->bias_level == SND_SOC_BIAS_ON)) {
1815 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1818 "ASoC: Failed to prepare bias: %d\n", ret);
1822 /* Async callback run prior to DAPM sequences - brings to their final
1825 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1827 struct snd_soc_dapm_context *d = data;
1830 /* If we just powered the last thing off drop to standby bias */
1831 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1832 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1833 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1834 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1836 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1840 /* If we're in standby and can support bias off then do that */
1841 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1842 d->target_bias_level == SND_SOC_BIAS_OFF) {
1843 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1845 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1848 if (d->dev && cookie)
1849 pm_runtime_put(d->dev);
1852 /* If we just powered up then move to active bias */
1853 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1854 d->target_bias_level == SND_SOC_BIAS_ON) {
1855 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1857 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1862 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1863 bool power, bool connect)
1865 /* If a connection is being made or broken then that update
1866 * will have marked the peer dirty, otherwise the widgets are
1867 * not connected and this update has no impact. */
1871 /* If the peer is already in the state we're moving to then we
1872 * won't have an impact on it. */
1873 if (power != peer->power)
1874 dapm_mark_dirty(peer, "peer state change");
1877 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1878 struct list_head *up_list,
1879 struct list_head *down_list)
1881 struct snd_soc_dapm_path *path;
1883 if (w->power == power)
1886 trace_snd_soc_dapm_widget_power(w, power);
1888 /* If we changed our power state perhaps our neigbours changed
1891 snd_soc_dapm_widget_for_each_source_path(w, path)
1892 dapm_widget_set_peer_power(path->source, power, path->connect);
1894 /* Supplies can't affect their outputs, only their inputs */
1895 if (!w->is_supply) {
1896 snd_soc_dapm_widget_for_each_sink_path(w, path)
1897 dapm_widget_set_peer_power(path->sink, power,
1902 dapm_seq_insert(w, up_list, true);
1904 dapm_seq_insert(w, down_list, false);
1907 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1908 struct list_head *up_list,
1909 struct list_head *down_list)
1914 case snd_soc_dapm_pre:
1915 dapm_seq_insert(w, down_list, false);
1917 case snd_soc_dapm_post:
1918 dapm_seq_insert(w, up_list, true);
1922 power = dapm_widget_power_check(w);
1924 dapm_widget_set_power(w, power, up_list, down_list);
1929 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1931 if (dapm->idle_bias_off)
1934 switch (snd_power_get_state(dapm->card->snd_card)) {
1935 case SNDRV_CTL_POWER_D3hot:
1936 case SNDRV_CTL_POWER_D3cold:
1937 return dapm->suspend_bias_off;
1946 * Scan each dapm widget for complete audio path.
1947 * A complete path is a route that has valid endpoints i.e.:-
1949 * o DAC to output pin.
1950 * o Input pin to ADC.
1951 * o Input pin to Output pin (bypass, sidetone)
1952 * o DAC to ADC (loopback).
1954 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1956 struct snd_soc_dapm_widget *w;
1957 struct snd_soc_dapm_context *d;
1959 LIST_HEAD(down_list);
1960 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1961 enum snd_soc_bias_level bias;
1964 lockdep_assert_held(&card->dapm_mutex);
1966 trace_snd_soc_dapm_start(card);
1968 for_each_card_dapms(card, d) {
1969 if (dapm_idle_bias_off(d))
1970 d->target_bias_level = SND_SOC_BIAS_OFF;
1972 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1977 /* Check which widgets we need to power and store them in
1978 * lists indicating if they should be powered up or down. We
1979 * only check widgets that have been flagged as dirty but note
1980 * that new widgets may be added to the dirty list while we
1983 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1984 dapm_power_one_widget(w, &up_list, &down_list);
1987 for_each_card_widgets(card, w) {
1989 case snd_soc_dapm_pre:
1990 case snd_soc_dapm_post:
1991 /* These widgets always need to be powered */
1994 list_del_init(&w->dirty);
2001 /* Supplies and micbiases only bring the
2002 * context up to STANDBY as unless something
2003 * else is active and passing audio they
2004 * generally don't require full power. Signal
2005 * generators are virtual pins and have no
2006 * power impact themselves.
2009 case snd_soc_dapm_siggen:
2010 case snd_soc_dapm_vmid:
2012 case snd_soc_dapm_supply:
2013 case snd_soc_dapm_regulator_supply:
2014 case snd_soc_dapm_pinctrl:
2015 case snd_soc_dapm_clock_supply:
2016 case snd_soc_dapm_micbias:
2017 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2018 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2021 d->target_bias_level = SND_SOC_BIAS_ON;
2028 /* Force all contexts in the card to the same bias state if
2029 * they're not ground referenced.
2031 bias = SND_SOC_BIAS_OFF;
2032 for_each_card_dapms(card, d)
2033 if (d->target_bias_level > bias)
2034 bias = d->target_bias_level;
2035 for_each_card_dapms(card, d)
2036 if (!dapm_idle_bias_off(d))
2037 d->target_bias_level = bias;
2039 trace_snd_soc_dapm_walk_done(card);
2041 /* Run card bias changes at first */
2042 dapm_pre_sequence_async(&card->dapm, 0);
2043 /* Run other bias changes in parallel */
2044 for_each_card_dapms(card, d) {
2045 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2046 async_schedule_domain(dapm_pre_sequence_async, d,
2049 async_synchronize_full_domain(&async_domain);
2051 list_for_each_entry(w, &down_list, power_list) {
2052 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2055 list_for_each_entry(w, &up_list, power_list) {
2056 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2059 /* Power down widgets first; try to avoid amplifying pops. */
2060 dapm_seq_run(card, &down_list, event, false);
2062 dapm_widget_update(card);
2065 dapm_seq_run(card, &up_list, event, true);
2067 /* Run all the bias changes in parallel */
2068 for_each_card_dapms(card, d) {
2069 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2070 async_schedule_domain(dapm_post_sequence_async, d,
2073 async_synchronize_full_domain(&async_domain);
2074 /* Run card bias changes at last */
2075 dapm_post_sequence_async(&card->dapm, 0);
2077 /* do we need to notify any clients that DAPM event is complete */
2078 for_each_card_dapms(card, d) {
2082 ret = snd_soc_component_stream_event(d->component, event);
2087 pop_dbg(card->dev, card->pop_time,
2088 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2089 pop_wait(card->pop_time);
2091 trace_snd_soc_dapm_done(card);
2096 #ifdef CONFIG_DEBUG_FS
2097 static ssize_t dapm_widget_power_read_file(struct file *file,
2098 char __user *user_buf,
2099 size_t count, loff_t *ppos)
2101 struct snd_soc_dapm_widget *w = file->private_data;
2102 struct snd_soc_card *card = w->dapm->card;
2103 enum snd_soc_dapm_direction dir, rdir;
2107 struct snd_soc_dapm_path *p = NULL;
2109 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2113 mutex_lock(&card->dapm_mutex);
2115 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2120 in = is_connected_input_ep(w, NULL, NULL);
2121 out = is_connected_output_ep(w, NULL, NULL);
2124 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2125 w->name, w->power ? "On" : "Off",
2126 w->force ? " (forced)" : "", in, out);
2129 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2130 " - R%d(0x%x) mask 0x%x",
2131 w->reg, w->reg, w->mask << w->shift);
2133 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2136 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2138 w->active ? "active" : "inactive");
2140 snd_soc_dapm_for_each_direction(dir) {
2141 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2142 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2143 if (p->connected && !p->connected(p->source, p->sink))
2149 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2150 " %s \"%s\" \"%s\"\n",
2151 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2152 p->name ? p->name : "static",
2153 p->node[rdir]->name);
2157 mutex_unlock(&card->dapm_mutex);
2159 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2165 static const struct file_operations dapm_widget_power_fops = {
2166 .open = simple_open,
2167 .read = dapm_widget_power_read_file,
2168 .llseek = default_llseek,
2171 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2172 size_t count, loff_t *ppos)
2174 struct snd_soc_dapm_context *dapm = file->private_data;
2177 switch (dapm->bias_level) {
2178 case SND_SOC_BIAS_ON:
2181 case SND_SOC_BIAS_PREPARE:
2182 level = "Prepare\n";
2184 case SND_SOC_BIAS_STANDBY:
2185 level = "Standby\n";
2187 case SND_SOC_BIAS_OFF:
2191 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2192 level = "Unknown\n";
2196 return simple_read_from_buffer(user_buf, count, ppos, level,
2200 static const struct file_operations dapm_bias_fops = {
2201 .open = simple_open,
2202 .read = dapm_bias_read_file,
2203 .llseek = default_llseek,
2206 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2207 struct dentry *parent)
2209 if (!parent || IS_ERR(parent))
2212 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2214 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2218 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2220 struct snd_soc_dapm_context *dapm = w->dapm;
2222 if (!dapm->debugfs_dapm || !w->name)
2225 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2226 &dapm_widget_power_fops);
2229 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2231 debugfs_remove_recursive(dapm->debugfs_dapm);
2232 dapm->debugfs_dapm = NULL;
2236 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2237 struct dentry *parent)
2241 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2245 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2252 * soc_dapm_connect_path() - Connects or disconnects a path
2253 * @path: The path to update
2254 * @connect: The new connect state of the path. True if the path is connected,
2255 * false if it is disconnected.
2256 * @reason: The reason why the path changed (for debugging only)
2258 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2259 bool connect, const char *reason)
2261 if (path->connect == connect)
2264 path->connect = connect;
2265 dapm_mark_dirty(path->source, reason);
2266 dapm_mark_dirty(path->sink, reason);
2267 dapm_path_invalidate(path);
2270 /* test and update the power status of a mux widget */
2271 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2272 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2274 struct snd_soc_dapm_path *path;
2278 lockdep_assert_held(&card->dapm_mutex);
2280 /* find dapm widget path assoc with kcontrol */
2281 dapm_kcontrol_for_each_path(path, kcontrol) {
2283 /* we now need to match the string in the enum to the path */
2284 if (e && !(strcmp(path->name, e->texts[mux])))
2289 soc_dapm_connect_path(path, connect, "mux update");
2293 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2298 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2299 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2300 struct snd_soc_dapm_update *update)
2302 struct snd_soc_card *card = dapm->card;
2305 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2306 card->update = update;
2307 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2308 card->update = NULL;
2309 mutex_unlock(&card->dapm_mutex);
2311 snd_soc_dpcm_runtime_update(card);
2314 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2316 /* test and update the power status of a mixer or switch widget */
2317 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2318 struct snd_kcontrol *kcontrol,
2319 int connect, int rconnect)
2321 struct snd_soc_dapm_path *path;
2324 lockdep_assert_held(&card->dapm_mutex);
2326 /* find dapm widget path assoc with kcontrol */
2327 dapm_kcontrol_for_each_path(path, kcontrol) {
2329 * Ideally this function should support any number of
2330 * paths and channels. But since kcontrols only come
2331 * in mono and stereo variants, we are limited to 2
2334 * The following code assumes for stereo controls the
2335 * first path (when 'found == 0') is the left channel,
2336 * and all remaining paths (when 'found == 1') are the
2339 * A stereo control is signified by a valid 'rconnect'
2340 * value, either 0 for unconnected, or >= 0 for connected.
2341 * This is chosen instead of using snd_soc_volsw_is_stereo,
2342 * so that the behavior of snd_soc_dapm_mixer_update_power
2343 * doesn't change even when the kcontrol passed in is
2346 * It passes 'connect' as the path connect status for
2347 * the left channel, and 'rconnect' for the right
2350 if (found && rconnect >= 0)
2351 soc_dapm_connect_path(path, rconnect, "mixer update");
2353 soc_dapm_connect_path(path, connect, "mixer update");
2358 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2363 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2364 struct snd_kcontrol *kcontrol, int connect,
2365 struct snd_soc_dapm_update *update)
2367 struct snd_soc_card *card = dapm->card;
2370 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2371 card->update = update;
2372 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2373 card->update = NULL;
2374 mutex_unlock(&card->dapm_mutex);
2376 snd_soc_dpcm_runtime_update(card);
2379 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2381 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2384 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2385 struct snd_soc_dapm_widget *w;
2387 char *state = "not set";
2389 /* card won't be set for the dummy component, as a spot fix
2390 * we're checking for that case specifically here but in future
2391 * we will ensure that the dummy component looks like others.
2396 for_each_card_widgets(cmpnt->card, w) {
2397 if (w->dapm != dapm)
2400 /* only display widgets that burn power */
2402 case snd_soc_dapm_hp:
2403 case snd_soc_dapm_mic:
2404 case snd_soc_dapm_spk:
2405 case snd_soc_dapm_line:
2406 case snd_soc_dapm_micbias:
2407 case snd_soc_dapm_dac:
2408 case snd_soc_dapm_adc:
2409 case snd_soc_dapm_pga:
2410 case snd_soc_dapm_effect:
2411 case snd_soc_dapm_out_drv:
2412 case snd_soc_dapm_mixer:
2413 case snd_soc_dapm_mixer_named_ctl:
2414 case snd_soc_dapm_supply:
2415 case snd_soc_dapm_regulator_supply:
2416 case snd_soc_dapm_pinctrl:
2417 case snd_soc_dapm_clock_supply:
2419 count += sprintf(buf + count, "%s: %s\n",
2420 w->name, w->power ? "On":"Off");
2427 switch (snd_soc_dapm_get_bias_level(dapm)) {
2428 case SND_SOC_BIAS_ON:
2431 case SND_SOC_BIAS_PREPARE:
2434 case SND_SOC_BIAS_STANDBY:
2437 case SND_SOC_BIAS_OFF:
2441 count += sprintf(buf + count, "PM State: %s\n", state);
2446 /* show dapm widget status in sys fs */
2447 static ssize_t dapm_widget_show(struct device *dev,
2448 struct device_attribute *attr, char *buf)
2450 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2451 struct snd_soc_dai *codec_dai;
2454 mutex_lock(&rtd->card->dapm_mutex);
2456 for_each_rtd_codec_dais(rtd, i, codec_dai) {
2457 struct snd_soc_component *cmpnt = codec_dai->component;
2459 count += dapm_widget_show_component(cmpnt, buf + count);
2462 mutex_unlock(&rtd->card->dapm_mutex);
2467 static DEVICE_ATTR_RO(dapm_widget);
2469 struct attribute *soc_dapm_dev_attrs[] = {
2470 &dev_attr_dapm_widget.attr,
2474 static void dapm_free_path(struct snd_soc_dapm_path *path)
2476 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2477 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2478 list_del(&path->list_kcontrol);
2479 list_del(&path->list);
2483 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2485 struct snd_soc_dapm_path *p, *next_p;
2486 enum snd_soc_dapm_direction dir;
2489 list_del(&w->dirty);
2491 * remove source and sink paths associated to this widget.
2492 * While removing the path, remove reference to it from both
2493 * source and sink widgets so that path is removed only once.
2495 snd_soc_dapm_for_each_direction(dir) {
2496 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2500 kfree(w->kcontrols);
2501 kfree_const(w->name);
2502 kfree_const(w->sname);
2506 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2508 dapm->path_sink_cache.widget = NULL;
2509 dapm->path_source_cache.widget = NULL;
2512 /* free all dapm widgets and resources */
2513 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2515 struct snd_soc_dapm_widget *w, *next_w;
2517 for_each_card_widgets_safe(dapm->card, w, next_w) {
2518 if (w->dapm != dapm)
2520 snd_soc_dapm_free_widget(w);
2522 snd_soc_dapm_reset_cache(dapm);
2525 static struct snd_soc_dapm_widget *dapm_find_widget(
2526 struct snd_soc_dapm_context *dapm, const char *pin,
2527 bool search_other_contexts)
2529 struct snd_soc_dapm_widget *w;
2530 struct snd_soc_dapm_widget *fallback = NULL;
2531 char prefixed_pin[80];
2532 const char *pin_name;
2533 const char *prefix = soc_dapm_prefix(dapm);
2536 snprintf(prefixed_pin, sizeof(prefixed_pin), "%s %s",
2538 pin_name = prefixed_pin;
2543 for_each_card_widgets(dapm->card, w) {
2544 if (!strcmp(w->name, pin_name)) {
2545 if (w->dapm == dapm)
2552 if (search_other_contexts)
2558 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2559 const char *pin, int status)
2561 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2564 dapm_assert_locked(dapm);
2567 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2571 if (w->connected != status) {
2572 dapm_mark_dirty(w, "pin configuration");
2573 dapm_widget_invalidate_input_paths(w);
2574 dapm_widget_invalidate_output_paths(w);
2578 w->connected = status;
2586 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2587 * @dapm: DAPM context
2589 * Walks all dapm audio paths and powers widgets according to their
2590 * stream or path usage.
2592 * Requires external locking.
2594 * Returns 0 for success.
2596 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2599 * Suppress early reports (eg, jacks syncing their state) to avoid
2600 * silly DAPM runs during card startup.
2602 if (!dapm->card || !dapm->card->instantiated)
2605 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2607 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2610 * snd_soc_dapm_sync - scan and power dapm paths
2611 * @dapm: DAPM context
2613 * Walks all dapm audio paths and powers widgets according to their
2614 * stream or path usage.
2616 * Returns 0 for success.
2618 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2622 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2623 ret = snd_soc_dapm_sync_unlocked(dapm);
2624 mutex_unlock(&dapm->card->dapm_mutex);
2627 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2629 static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2630 struct snd_soc_dapm_widget *w,
2634 case snd_soc_dapm_aif_out:
2635 case snd_soc_dapm_aif_in:
2641 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2642 w->channel < channels ? "Connecting" : "Disconnecting",
2643 p->source->name, p->sink->name);
2645 if (w->channel < channels)
2646 soc_dapm_connect_path(p, true, "dai update");
2648 soc_dapm_connect_path(p, false, "dai update");
2653 static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2654 struct snd_pcm_hw_params *params,
2655 struct snd_soc_dai *dai)
2657 int dir = substream->stream;
2658 int channels = params_channels(params);
2659 struct snd_soc_dapm_path *p;
2660 struct snd_soc_dapm_widget *w;
2663 w = snd_soc_dai_get_widget(dai, dir);
2668 dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
2669 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
2671 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2672 ret = dapm_update_dai_chan(p, p->sink, channels);
2677 snd_soc_dapm_widget_for_each_source_path(w, p) {
2678 ret = dapm_update_dai_chan(p, p->source, channels);
2686 int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
2687 struct snd_pcm_hw_params *params,
2688 struct snd_soc_dai *dai)
2690 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
2693 mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2694 ret = dapm_update_dai_unlocked(substream, params, dai);
2695 mutex_unlock(&rtd->card->dapm_mutex);
2699 EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
2702 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2703 * @w: The widget for which to update the flags
2705 * Some widgets have a dynamic category which depends on which neighbors they
2706 * are connected to. This function update the category for these widgets.
2708 * This function must be called whenever a path is added or removed to a widget.
2710 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2712 enum snd_soc_dapm_direction dir;
2713 struct snd_soc_dapm_path *p;
2717 case snd_soc_dapm_input:
2718 /* On a fully routed card an input is never a source */
2719 if (w->dapm->card->fully_routed)
2721 ep = SND_SOC_DAPM_EP_SOURCE;
2722 snd_soc_dapm_widget_for_each_source_path(w, p) {
2723 if (p->source->id == snd_soc_dapm_micbias ||
2724 p->source->id == snd_soc_dapm_mic ||
2725 p->source->id == snd_soc_dapm_line ||
2726 p->source->id == snd_soc_dapm_output) {
2732 case snd_soc_dapm_output:
2733 /* On a fully routed card a output is never a sink */
2734 if (w->dapm->card->fully_routed)
2736 ep = SND_SOC_DAPM_EP_SINK;
2737 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2738 if (p->sink->id == snd_soc_dapm_spk ||
2739 p->sink->id == snd_soc_dapm_hp ||
2740 p->sink->id == snd_soc_dapm_line ||
2741 p->sink->id == snd_soc_dapm_input) {
2747 case snd_soc_dapm_line:
2749 snd_soc_dapm_for_each_direction(dir) {
2750 if (!list_empty(&w->edges[dir]))
2751 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2761 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2762 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2763 const char *control)
2765 bool dynamic_source = false;
2766 bool dynamic_sink = false;
2771 switch (source->id) {
2772 case snd_soc_dapm_demux:
2773 dynamic_source = true;
2780 case snd_soc_dapm_mux:
2781 case snd_soc_dapm_switch:
2782 case snd_soc_dapm_mixer:
2783 case snd_soc_dapm_mixer_named_ctl:
2784 dynamic_sink = true;
2790 if (dynamic_source && dynamic_sink) {
2792 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2793 source->name, control, sink->name);
2795 } else if (!dynamic_source && !dynamic_sink) {
2797 "Control not supported for path %s -> [%s] -> %s\n",
2798 source->name, control, sink->name);
2805 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2806 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2807 const char *control,
2808 int (*connected)(struct snd_soc_dapm_widget *source,
2809 struct snd_soc_dapm_widget *sink))
2811 struct snd_soc_dapm_widget *widgets[2];
2812 enum snd_soc_dapm_direction dir;
2813 struct snd_soc_dapm_path *path;
2816 if (wsink->is_supply && !wsource->is_supply) {
2818 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2819 wsource->name, wsink->name);
2823 if (connected && !wsource->is_supply) {
2825 "connected() callback only supported for supply widgets (%s -> %s)\n",
2826 wsource->name, wsink->name);
2830 if (wsource->is_supply && control) {
2832 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2833 wsource->name, control, wsink->name);
2837 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2841 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2845 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2846 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2847 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2848 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2850 path->connected = connected;
2851 INIT_LIST_HEAD(&path->list);
2852 INIT_LIST_HEAD(&path->list_kcontrol);
2854 if (wsource->is_supply || wsink->is_supply)
2855 path->is_supply = 1;
2857 /* connect static paths */
2858 if (control == NULL) {
2861 switch (wsource->id) {
2862 case snd_soc_dapm_demux:
2863 ret = dapm_connect_mux(dapm, path, control, wsource);
2871 switch (wsink->id) {
2872 case snd_soc_dapm_mux:
2873 ret = dapm_connect_mux(dapm, path, control, wsink);
2877 case snd_soc_dapm_switch:
2878 case snd_soc_dapm_mixer:
2879 case snd_soc_dapm_mixer_named_ctl:
2880 ret = dapm_connect_mixer(dapm, path, control);
2889 list_add(&path->list, &dapm->card->paths);
2890 snd_soc_dapm_for_each_direction(dir)
2891 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2893 snd_soc_dapm_for_each_direction(dir) {
2894 dapm_update_widget_flags(widgets[dir]);
2895 dapm_mark_dirty(widgets[dir], "Route added");
2898 if (dapm->card->instantiated && path->connect)
2899 dapm_path_invalidate(path);
2907 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2908 const struct snd_soc_dapm_route *route)
2910 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2911 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2914 char prefixed_sink[80];
2915 char prefixed_source[80];
2917 unsigned int sink_ref = 0;
2918 unsigned int source_ref = 0;
2921 prefix = soc_dapm_prefix(dapm);
2923 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2924 prefix, route->sink);
2925 sink = prefixed_sink;
2926 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2927 prefix, route->source);
2928 source = prefixed_source;
2931 source = route->source;
2934 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2935 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2937 if (wsink && wsource)
2941 * find src and dest widgets over all widgets but favor a widget from
2942 * current DAPM context
2944 for_each_card_widgets(dapm->card, w) {
2945 if (!wsink && !(strcmp(w->name, sink))) {
2947 if (w->dapm == dapm) {
2955 "ASoC: sink widget %s overwritten\n",
2959 if (!wsource && !(strcmp(w->name, source))) {
2961 if (w->dapm == dapm) {
2969 "ASoC: source widget %s overwritten\n",
2973 /* use widget from another DAPM context if not found from this */
2979 if (wsource == NULL) {
2980 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2984 if (wsink == NULL) {
2985 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2991 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2992 dapm_wcache_update(&dapm->path_source_cache, wsource);
2994 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
3001 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
3002 source, route->control, sink);
3006 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
3007 const struct snd_soc_dapm_route *route)
3009 struct snd_soc_dapm_widget *wsource, *wsink;
3010 struct snd_soc_dapm_path *path, *p;
3013 char prefixed_sink[80];
3014 char prefixed_source[80];
3017 if (route->control) {
3019 "ASoC: Removal of routes with controls not supported\n");
3023 prefix = soc_dapm_prefix(dapm);
3025 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
3026 prefix, route->sink);
3027 sink = prefixed_sink;
3028 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
3029 prefix, route->source);
3030 source = prefixed_source;
3033 source = route->source;
3037 list_for_each_entry(p, &dapm->card->paths, list) {
3038 if (strcmp(p->source->name, source) != 0)
3040 if (strcmp(p->sink->name, sink) != 0)
3047 wsource = path->source;
3050 dapm_mark_dirty(wsource, "Route removed");
3051 dapm_mark_dirty(wsink, "Route removed");
3053 dapm_path_invalidate(path);
3055 dapm_free_path(path);
3057 /* Update any path related flags */
3058 dapm_update_widget_flags(wsource);
3059 dapm_update_widget_flags(wsink);
3061 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
3069 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
3070 * @dapm: DAPM context
3071 * @route: audio routes
3072 * @num: number of routes
3074 * Connects 2 dapm widgets together via a named audio path. The sink is
3075 * the widget receiving the audio signal, whilst the source is the sender
3076 * of the audio signal.
3078 * Returns 0 for success else error. On error all resources can be freed
3079 * with a call to snd_soc_card_free().
3081 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
3082 const struct snd_soc_dapm_route *route, int num)
3086 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3087 for (i = 0; i < num; i++) {
3088 r = snd_soc_dapm_add_route(dapm, route);
3090 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
3092 route->control ? route->control : "direct",
3098 mutex_unlock(&dapm->card->dapm_mutex);
3102 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
3105 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
3106 * @dapm: DAPM context
3107 * @route: audio routes
3108 * @num: number of routes
3110 * Removes routes from the DAPM context.
3112 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3113 const struct snd_soc_dapm_route *route, int num)
3117 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3118 for (i = 0; i < num; i++) {
3119 snd_soc_dapm_del_route(dapm, route);
3122 mutex_unlock(&dapm->card->dapm_mutex);
3126 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3128 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3129 const struct snd_soc_dapm_route *route)
3131 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3134 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3137 struct snd_soc_dapm_path *path;
3141 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3147 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3152 if (route->control || route->connected)
3153 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3154 route->source, route->sink);
3156 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3157 if (path->sink == sink) {
3164 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3165 route->source, route->sink);
3167 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3168 count, route->source, route->sink);
3174 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
3175 * @dapm: DAPM context
3176 * @route: audio routes
3177 * @num: number of routes
3179 * Mark existing routes matching those specified in the passed array
3180 * as being weak, meaning that they are ignored for the purpose of
3181 * power decisions. The main intended use case is for sidetone paths
3182 * which couple audio between other independent paths if they are both
3183 * active in order to make the combination work better at the user
3184 * level but which aren't intended to be "used".
3186 * Note that CODEC drivers should not use this as sidetone type paths
3187 * can frequently also be used as bypass paths.
3189 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3190 const struct snd_soc_dapm_route *route, int num)
3195 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3196 for (i = 0; i < num; i++) {
3197 err = snd_soc_dapm_weak_route(dapm, route);
3202 mutex_unlock(&dapm->card->dapm_mutex);
3206 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3209 * snd_soc_dapm_new_widgets - add new dapm widgets
3210 * @card: card to be checked for new dapm widgets
3212 * Checks the codec for any new dapm widgets and creates them if found.
3214 * Returns 0 for success.
3216 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3218 struct snd_soc_dapm_widget *w;
3221 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3223 for_each_card_widgets(card, w)
3228 if (w->num_kcontrols) {
3229 w->kcontrols = kcalloc(w->num_kcontrols,
3230 sizeof(struct snd_kcontrol *),
3232 if (!w->kcontrols) {
3233 mutex_unlock(&card->dapm_mutex);
3239 case snd_soc_dapm_switch:
3240 case snd_soc_dapm_mixer:
3241 case snd_soc_dapm_mixer_named_ctl:
3244 case snd_soc_dapm_mux:
3245 case snd_soc_dapm_demux:
3248 case snd_soc_dapm_pga:
3249 case snd_soc_dapm_effect:
3250 case snd_soc_dapm_out_drv:
3253 case snd_soc_dapm_dai_link:
3254 dapm_new_dai_link(w);
3260 /* Read the initial power state from the device */
3262 val = soc_dapm_read(w->dapm, w->reg);
3263 val = val >> w->shift;
3265 if (val == w->on_val)
3271 dapm_mark_dirty(w, "new widget");
3272 dapm_debugfs_add_widget(w);
3275 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3276 mutex_unlock(&card->dapm_mutex);
3279 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3282 * snd_soc_dapm_get_volsw - dapm mixer get callback
3283 * @kcontrol: mixer control
3284 * @ucontrol: control element information
3286 * Callback to get the value of a dapm mixer control.
3288 * Returns 0 for success.
3290 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3291 struct snd_ctl_elem_value *ucontrol)
3293 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3294 struct snd_soc_card *card = dapm->card;
3295 struct soc_mixer_control *mc =
3296 (struct soc_mixer_control *)kcontrol->private_value;
3298 unsigned int shift = mc->shift;
3300 unsigned int width = fls(max);
3301 unsigned int mask = (1 << fls(max)) - 1;
3302 unsigned int invert = mc->invert;
3303 unsigned int reg_val, val, rval = 0;
3305 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3306 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3307 reg_val = soc_dapm_read(dapm, reg);
3308 val = (reg_val >> shift) & mask;
3310 if (reg != mc->rreg)
3311 reg_val = soc_dapm_read(dapm, mc->rreg);
3313 if (snd_soc_volsw_is_stereo(mc))
3314 rval = (reg_val >> mc->rshift) & mask;
3316 reg_val = dapm_kcontrol_get_value(kcontrol);
3317 val = reg_val & mask;
3319 if (snd_soc_volsw_is_stereo(mc))
3320 rval = (reg_val >> width) & mask;
3322 mutex_unlock(&card->dapm_mutex);
3325 ucontrol->value.integer.value[0] = max - val;
3327 ucontrol->value.integer.value[0] = val;
3329 if (snd_soc_volsw_is_stereo(mc)) {
3331 ucontrol->value.integer.value[1] = max - rval;
3333 ucontrol->value.integer.value[1] = rval;
3338 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3341 * snd_soc_dapm_put_volsw - dapm mixer set callback
3342 * @kcontrol: mixer control
3343 * @ucontrol: control element information
3345 * Callback to set the value of a dapm mixer control.
3347 * Returns 0 for success.
3349 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3350 struct snd_ctl_elem_value *ucontrol)
3352 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3353 struct snd_soc_card *card = dapm->card;
3354 struct soc_mixer_control *mc =
3355 (struct soc_mixer_control *)kcontrol->private_value;
3357 unsigned int shift = mc->shift;
3359 unsigned int width = fls(max);
3360 unsigned int mask = (1 << width) - 1;
3361 unsigned int invert = mc->invert;
3362 unsigned int val, rval = 0;
3363 int connect, rconnect = -1, change, reg_change = 0;
3364 struct snd_soc_dapm_update update = {};
3367 val = (ucontrol->value.integer.value[0] & mask);
3373 if (snd_soc_volsw_is_stereo(mc)) {
3374 rval = (ucontrol->value.integer.value[1] & mask);
3380 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3382 /* This assumes field width < (bits in unsigned int / 2) */
3383 if (width > sizeof(unsigned int) * 8 / 2)
3385 "ASoC: control %s field width limit exceeded\n",
3387 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3389 if (reg != SND_SOC_NOPM) {
3391 rval = rval << mc->rshift;
3393 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3395 if (snd_soc_volsw_is_stereo(mc))
3396 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3401 if (change || reg_change) {
3403 if (snd_soc_volsw_is_stereo(mc)) {
3404 update.has_second_set = true;
3405 update.reg2 = mc->rreg;
3406 update.mask2 = mask << mc->rshift;
3409 update.kcontrol = kcontrol;
3411 update.mask = mask << shift;
3413 card->update = &update;
3415 change |= reg_change;
3417 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3420 card->update = NULL;
3423 mutex_unlock(&card->dapm_mutex);
3426 snd_soc_dpcm_runtime_update(card);
3430 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3433 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3434 * @kcontrol: mixer control
3435 * @ucontrol: control element information
3437 * Callback to get the value of a dapm enumerated double mixer control.
3439 * Returns 0 for success.
3441 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3442 struct snd_ctl_elem_value *ucontrol)
3444 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3445 struct snd_soc_card *card = dapm->card;
3446 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3447 unsigned int reg_val, val;
3449 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3450 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3451 reg_val = soc_dapm_read(dapm, e->reg);
3453 reg_val = dapm_kcontrol_get_value(kcontrol);
3455 mutex_unlock(&card->dapm_mutex);
3457 val = (reg_val >> e->shift_l) & e->mask;
3458 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3459 if (e->shift_l != e->shift_r) {
3460 val = (reg_val >> e->shift_r) & e->mask;
3461 val = snd_soc_enum_val_to_item(e, val);
3462 ucontrol->value.enumerated.item[1] = val;
3467 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3470 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3471 * @kcontrol: mixer control
3472 * @ucontrol: control element information
3474 * Callback to set the value of a dapm enumerated double mixer control.
3476 * Returns 0 for success.
3478 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3479 struct snd_ctl_elem_value *ucontrol)
3481 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3482 struct snd_soc_card *card = dapm->card;
3483 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3484 unsigned int *item = ucontrol->value.enumerated.item;
3485 unsigned int val, change, reg_change = 0;
3487 struct snd_soc_dapm_update update = {};
3490 if (item[0] >= e->items)
3493 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3494 mask = e->mask << e->shift_l;
3495 if (e->shift_l != e->shift_r) {
3496 if (item[1] > e->items)
3498 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3499 mask |= e->mask << e->shift_r;
3502 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3504 change = dapm_kcontrol_set_value(kcontrol, val);
3506 if (e->reg != SND_SOC_NOPM)
3507 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3509 if (change || reg_change) {
3511 update.kcontrol = kcontrol;
3512 update.reg = e->reg;
3515 card->update = &update;
3517 change |= reg_change;
3519 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3521 card->update = NULL;
3524 mutex_unlock(&card->dapm_mutex);
3527 snd_soc_dpcm_runtime_update(card);
3531 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3534 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3536 * @kcontrol: mixer control
3537 * @uinfo: control element information
3539 * Callback to provide information about a pin switch control.
3541 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3542 struct snd_ctl_elem_info *uinfo)
3544 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3546 uinfo->value.integer.min = 0;
3547 uinfo->value.integer.max = 1;
3551 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3554 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3556 * @kcontrol: mixer control
3559 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3560 struct snd_ctl_elem_value *ucontrol)
3562 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3563 const char *pin = (const char *)kcontrol->private_value;
3565 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3567 ucontrol->value.integer.value[0] =
3568 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3570 mutex_unlock(&card->dapm_mutex);
3574 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3577 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3579 * @kcontrol: mixer control
3582 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3583 struct snd_ctl_elem_value *ucontrol)
3585 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3586 const char *pin = (const char *)kcontrol->private_value;
3589 if (ucontrol->value.integer.value[0])
3590 ret = snd_soc_dapm_enable_pin(&card->dapm, pin);
3592 ret = snd_soc_dapm_disable_pin(&card->dapm, pin);
3594 snd_soc_dapm_sync(&card->dapm);
3597 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3599 struct snd_soc_dapm_widget *
3600 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3601 const struct snd_soc_dapm_widget *widget)
3603 enum snd_soc_dapm_direction dir;
3604 struct snd_soc_dapm_widget *w;
3608 if ((w = dapm_cnew_widget(widget)) == NULL)
3609 return ERR_PTR(-ENOMEM);
3612 case snd_soc_dapm_regulator_supply:
3613 w->regulator = devm_regulator_get(dapm->dev, w->name);
3614 if (IS_ERR(w->regulator)) {
3615 ret = PTR_ERR(w->regulator);
3616 goto request_failed;
3619 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3620 ret = regulator_allow_bypass(w->regulator, true);
3623 "ASoC: Failed to bypass %s: %d\n",
3627 case snd_soc_dapm_pinctrl:
3628 w->pinctrl = devm_pinctrl_get(dapm->dev);
3629 if (IS_ERR(w->pinctrl)) {
3630 ret = PTR_ERR(w->pinctrl);
3631 goto request_failed;
3634 /* set to sleep_state when initializing */
3635 dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD);
3637 case snd_soc_dapm_clock_supply:
3638 w->clk = devm_clk_get(dapm->dev, w->name);
3639 if (IS_ERR(w->clk)) {
3640 ret = PTR_ERR(w->clk);
3641 goto request_failed;
3648 prefix = soc_dapm_prefix(dapm);
3650 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3652 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3653 if (w->name == NULL) {
3654 kfree_const(w->sname);
3656 return ERR_PTR(-ENOMEM);
3660 case snd_soc_dapm_mic:
3661 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3662 w->power_check = dapm_generic_check_power;
3664 case snd_soc_dapm_input:
3665 if (!dapm->card->fully_routed)
3666 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3667 w->power_check = dapm_generic_check_power;
3669 case snd_soc_dapm_spk:
3670 case snd_soc_dapm_hp:
3671 w->is_ep = SND_SOC_DAPM_EP_SINK;
3672 w->power_check = dapm_generic_check_power;
3674 case snd_soc_dapm_output:
3675 if (!dapm->card->fully_routed)
3676 w->is_ep = SND_SOC_DAPM_EP_SINK;
3677 w->power_check = dapm_generic_check_power;
3679 case snd_soc_dapm_vmid:
3680 case snd_soc_dapm_siggen:
3681 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3682 w->power_check = dapm_always_on_check_power;
3684 case snd_soc_dapm_sink:
3685 w->is_ep = SND_SOC_DAPM_EP_SINK;
3686 w->power_check = dapm_always_on_check_power;
3689 case snd_soc_dapm_mux:
3690 case snd_soc_dapm_demux:
3691 case snd_soc_dapm_switch:
3692 case snd_soc_dapm_mixer:
3693 case snd_soc_dapm_mixer_named_ctl:
3694 case snd_soc_dapm_adc:
3695 case snd_soc_dapm_aif_out:
3696 case snd_soc_dapm_dac:
3697 case snd_soc_dapm_aif_in:
3698 case snd_soc_dapm_pga:
3699 case snd_soc_dapm_buffer:
3700 case snd_soc_dapm_scheduler:
3701 case snd_soc_dapm_effect:
3702 case snd_soc_dapm_src:
3703 case snd_soc_dapm_asrc:
3704 case snd_soc_dapm_encoder:
3705 case snd_soc_dapm_decoder:
3706 case snd_soc_dapm_out_drv:
3707 case snd_soc_dapm_micbias:
3708 case snd_soc_dapm_line:
3709 case snd_soc_dapm_dai_link:
3710 case snd_soc_dapm_dai_out:
3711 case snd_soc_dapm_dai_in:
3712 w->power_check = dapm_generic_check_power;
3714 case snd_soc_dapm_supply:
3715 case snd_soc_dapm_regulator_supply:
3716 case snd_soc_dapm_pinctrl:
3717 case snd_soc_dapm_clock_supply:
3718 case snd_soc_dapm_kcontrol:
3720 w->power_check = dapm_supply_check_power;
3723 w->power_check = dapm_always_on_check_power;
3728 INIT_LIST_HEAD(&w->list);
3729 INIT_LIST_HEAD(&w->dirty);
3730 /* see for_each_card_widgets */
3731 list_add_tail(&w->list, &dapm->card->widgets);
3733 snd_soc_dapm_for_each_direction(dir) {
3734 INIT_LIST_HEAD(&w->edges[dir]);
3735 w->endpoints[dir] = -1;
3738 /* machine layer sets up unconnected pins and insertions */
3743 if (ret != -EPROBE_DEFER)
3744 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3747 kfree_const(w->sname);
3749 return ERR_PTR(ret);
3753 * snd_soc_dapm_new_control - create new dapm control
3754 * @dapm: DAPM context
3755 * @widget: widget template
3757 * Creates new DAPM control based upon a template.
3759 * Returns a widget pointer on success or an error pointer on failure
3761 struct snd_soc_dapm_widget *
3762 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3763 const struct snd_soc_dapm_widget *widget)
3765 struct snd_soc_dapm_widget *w;
3767 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3768 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3769 mutex_unlock(&dapm->card->dapm_mutex);
3773 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3776 * snd_soc_dapm_new_controls - create new dapm controls
3777 * @dapm: DAPM context
3778 * @widget: widget array
3779 * @num: number of widgets
3781 * Creates new DAPM controls based upon the templates.
3783 * Returns 0 for success else error.
3785 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3786 const struct snd_soc_dapm_widget *widget,
3789 struct snd_soc_dapm_widget *w;
3793 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3794 for (i = 0; i < num; i++) {
3795 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3802 mutex_unlock(&dapm->card->dapm_mutex);
3805 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3808 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3809 struct snd_pcm_substream *substream)
3811 struct snd_soc_dapm_path *path;
3812 struct snd_soc_dai *source, *sink;
3813 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
3814 struct snd_pcm_hw_params *params = NULL;
3815 const struct snd_soc_pcm_stream *config = NULL;
3816 struct snd_pcm_runtime *runtime = NULL;
3820 params = kzalloc(sizeof(*params), GFP_KERNEL);
3824 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3830 substream->runtime = runtime;
3832 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3833 snd_soc_dapm_widget_for_each_source_path(w, path) {
3834 source = path->source->priv;
3836 ret = snd_soc_dai_startup(source, substream);
3838 dev_err(source->dev,
3839 "ASoC: startup() failed: %d\n", ret);
3842 snd_soc_dai_activate(source, substream->stream);
3845 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3846 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3847 sink = path->sink->priv;
3849 ret = snd_soc_dai_startup(sink, substream);
3852 "ASoC: startup() failed: %d\n", ret);
3855 snd_soc_dai_activate(sink, substream->stream);
3858 substream->hw_opened = 1;
3861 * Note: getting the config after .startup() gives a chance to
3862 * either party on the link to alter the configuration if
3865 config = rtd->dai_link->params + rtd->params_select;
3866 if (WARN_ON(!config)) {
3867 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3872 /* Be a little careful as we don't want to overflow the mask array */
3873 if (config->formats) {
3874 fmt = ffs(config->formats) - 1;
3876 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3883 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3884 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3886 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3888 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3889 = config->channels_min;
3890 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3891 = config->channels_max;
3893 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3894 snd_soc_dapm_widget_for_each_source_path(w, path) {
3895 source = path->source->priv;
3897 ret = snd_soc_dai_hw_params(source, substream, params);
3901 dapm_update_dai_unlocked(substream, params, source);
3904 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3905 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3906 sink = path->sink->priv;
3908 ret = snd_soc_dai_hw_params(sink, substream, params);
3912 dapm_update_dai_unlocked(substream, params, sink);
3915 runtime->format = params_format(params);
3916 runtime->subformat = params_subformat(params);
3917 runtime->channels = params_channels(params);
3918 runtime->rate = params_rate(params);
3925 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3926 struct snd_kcontrol *kcontrol, int event)
3928 struct snd_soc_dapm_path *path;
3929 struct snd_soc_dai *source, *sink;
3930 struct snd_pcm_substream *substream = w->priv;
3931 int ret = 0, saved_stream = substream->stream;
3933 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3934 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3938 case SND_SOC_DAPM_PRE_PMU:
3939 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3945 case SND_SOC_DAPM_POST_PMU:
3946 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3947 sink = path->sink->priv;
3949 ret = snd_soc_dai_digital_mute(sink, 0,
3950 SNDRV_PCM_STREAM_PLAYBACK);
3951 if (ret != 0 && ret != -ENOTSUPP)
3953 "ASoC: Failed to unmute: %d\n", ret);
3958 case SND_SOC_DAPM_PRE_PMD:
3959 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3960 sink = path->sink->priv;
3962 ret = snd_soc_dai_digital_mute(sink, 1,
3963 SNDRV_PCM_STREAM_PLAYBACK);
3964 if (ret != 0 && ret != -ENOTSUPP)
3966 "ASoC: Failed to mute: %d\n", ret);
3970 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3971 snd_soc_dapm_widget_for_each_source_path(w, path) {
3972 source = path->source->priv;
3973 snd_soc_dai_hw_free(source, substream);
3976 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3977 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3978 sink = path->sink->priv;
3979 snd_soc_dai_hw_free(sink, substream);
3982 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3983 snd_soc_dapm_widget_for_each_source_path(w, path) {
3984 source = path->source->priv;
3985 snd_soc_dai_deactivate(source, substream->stream);
3986 snd_soc_dai_shutdown(source, substream, 0);
3989 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3990 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3991 sink = path->sink->priv;
3992 snd_soc_dai_deactivate(sink, substream->stream);
3993 snd_soc_dai_shutdown(sink, substream, 0);
3997 case SND_SOC_DAPM_POST_PMD:
3998 kfree(substream->runtime);
4002 WARN(1, "Unknown event %d\n", event);
4007 /* Restore the substream direction */
4008 substream->stream = saved_stream;
4012 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4013 struct snd_ctl_elem_value *ucontrol)
4015 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4016 struct snd_soc_pcm_runtime *rtd = w->priv;
4018 ucontrol->value.enumerated.item[0] = rtd->params_select;
4023 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4024 struct snd_ctl_elem_value *ucontrol)
4026 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4027 struct snd_soc_pcm_runtime *rtd = w->priv;
4029 /* Can't change the config when widget is already powered */
4033 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4036 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4039 rtd->params_select = ucontrol->value.enumerated.item[0];
4045 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4046 unsigned long *private_value,
4048 const char **w_param_text)
4052 devm_kfree(card->dev, (void *)*private_value);
4057 for (count = 0 ; count < num_params; count++)
4058 devm_kfree(card->dev, (void *)w_param_text[count]);
4059 devm_kfree(card->dev, w_param_text);
4062 static struct snd_kcontrol_new *
4063 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4065 const struct snd_soc_pcm_stream *params,
4066 int num_params, const char **w_param_text,
4067 unsigned long *private_value)
4069 struct soc_enum w_param_enum[] = {
4070 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4072 struct snd_kcontrol_new kcontrol_dai_link[] = {
4073 SOC_ENUM_EXT(NULL, w_param_enum[0],
4074 snd_soc_dapm_dai_link_get,
4075 snd_soc_dapm_dai_link_put),
4077 struct snd_kcontrol_new *kcontrol_news;
4078 const struct snd_soc_pcm_stream *config = params;
4081 for (count = 0 ; count < num_params; count++) {
4082 if (!config->stream_name) {
4083 dev_warn(card->dapm.dev,
4084 "ASoC: anonymous config %d for dai link %s\n",
4086 w_param_text[count] =
4087 devm_kasprintf(card->dev, GFP_KERNEL,
4088 "Anonymous Configuration %d",
4091 w_param_text[count] = devm_kmemdup(card->dev,
4092 config->stream_name,
4093 strlen(config->stream_name) + 1,
4096 if (!w_param_text[count])
4097 goto outfree_w_param;
4101 w_param_enum[0].items = num_params;
4102 w_param_enum[0].texts = w_param_text;
4105 (unsigned long) devm_kmemdup(card->dev,
4106 (void *)(kcontrol_dai_link[0].private_value),
4107 sizeof(struct soc_enum), GFP_KERNEL);
4108 if (!*private_value) {
4109 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4111 goto outfree_w_param;
4113 kcontrol_dai_link[0].private_value = *private_value;
4114 /* duplicate kcontrol_dai_link on heap so that memory persists */
4115 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4116 sizeof(struct snd_kcontrol_new),
4118 if (!kcontrol_news) {
4119 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4121 goto outfree_w_param;
4123 return kcontrol_news;
4126 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4130 static struct snd_soc_dapm_widget *
4131 snd_soc_dapm_new_dai(struct snd_soc_card *card,
4132 struct snd_pcm_substream *substream,
4135 struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream);
4136 struct snd_soc_dapm_widget template;
4137 struct snd_soc_dapm_widget *w;
4138 const char **w_param_text;
4139 unsigned long private_value = 0;
4143 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4144 rtd->dai_link->name, id);
4146 return ERR_PTR(-ENOMEM);
4148 memset(&template, 0, sizeof(template));
4149 template.reg = SND_SOC_NOPM;
4150 template.id = snd_soc_dapm_dai_link;
4151 template.name = link_name;
4152 template.event = snd_soc_dai_link_event;
4153 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4154 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4155 template.kcontrol_news = NULL;
4157 /* allocate memory for control, only in case of multiple configs */
4158 if (rtd->dai_link->num_params > 1) {
4159 w_param_text = devm_kcalloc(card->dev,
4160 rtd->dai_link->num_params,
4161 sizeof(char *), GFP_KERNEL);
4162 if (!w_param_text) {
4167 template.num_kcontrols = 1;
4168 template.kcontrol_news =
4169 snd_soc_dapm_alloc_kcontrol(card,
4171 rtd->dai_link->params,
4172 rtd->dai_link->num_params,
4173 w_param_text, &private_value);
4174 if (!template.kcontrol_news) {
4179 w_param_text = NULL;
4181 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4183 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4186 dev_err(rtd->dev, "ASoC: Failed to create %s widget: %d\n",
4188 goto outfree_kcontrol_news;
4191 w->priv = substream;
4195 outfree_kcontrol_news:
4196 devm_kfree(card->dev, (void *)template.kcontrol_news);
4197 snd_soc_dapm_free_kcontrol(card, &private_value,
4198 rtd->dai_link->num_params, w_param_text);
4200 devm_kfree(card->dev, link_name);
4201 return ERR_PTR(ret);
4204 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4205 struct snd_soc_dai *dai)
4207 struct snd_soc_dapm_widget template;
4208 struct snd_soc_dapm_widget *w;
4210 WARN_ON(dapm->dev != dai->dev);
4212 memset(&template, 0, sizeof(template));
4213 template.reg = SND_SOC_NOPM;
4215 if (dai->driver->playback.stream_name) {
4216 template.id = snd_soc_dapm_dai_in;
4217 template.name = dai->driver->playback.stream_name;
4218 template.sname = dai->driver->playback.stream_name;
4220 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4223 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4228 dai->playback_widget = w;
4231 if (dai->driver->capture.stream_name) {
4232 template.id = snd_soc_dapm_dai_out;
4233 template.name = dai->driver->capture.stream_name;
4234 template.sname = dai->driver->capture.stream_name;
4236 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4239 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4244 dai->capture_widget = w;
4250 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4252 struct snd_soc_dapm_widget *dai_w, *w;
4253 struct snd_soc_dapm_widget *src, *sink;
4254 struct snd_soc_dai *dai;
4256 /* For each DAI widget... */
4257 for_each_card_widgets(card, dai_w) {
4258 switch (dai_w->id) {
4259 case snd_soc_dapm_dai_in:
4260 case snd_soc_dapm_dai_out:
4266 /* let users know there is no DAI to link */
4268 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4275 /* ...find all widgets with the same stream and link them */
4276 for_each_card_widgets(card, w) {
4277 if (w->dapm != dai_w->dapm)
4281 case snd_soc_dapm_dai_in:
4282 case snd_soc_dapm_dai_out:
4288 if (!w->sname || !strstr(w->sname, dai_w->sname))
4291 if (dai_w->id == snd_soc_dapm_dai_in) {
4298 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4299 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4306 static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
4307 struct snd_soc_dai *src_dai,
4308 struct snd_soc_dapm_widget *src,
4309 struct snd_soc_dapm_widget *dai,
4310 struct snd_soc_dai *sink_dai,
4311 struct snd_soc_dapm_widget *sink)
4313 dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n",
4314 src_dai->component->name, src->name,
4315 sink_dai->component->name, sink->name);
4318 snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL);
4322 snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
4325 static void dapm_connect_dai_pair(struct snd_soc_card *card,
4326 struct snd_soc_pcm_runtime *rtd,
4327 struct snd_soc_dai *codec_dai,
4328 struct snd_soc_dai *cpu_dai)
4330 struct snd_soc_dai_link *dai_link = rtd->dai_link;
4331 struct snd_soc_dapm_widget *dai, *codec, *playback_cpu, *capture_cpu;
4332 struct snd_pcm_substream *substream;
4333 struct snd_pcm_str *streams = rtd->pcm->streams;
4335 if (dai_link->params) {
4336 playback_cpu = cpu_dai->capture_widget;
4337 capture_cpu = cpu_dai->playback_widget;
4339 playback_cpu = cpu_dai->playback_widget;
4340 capture_cpu = cpu_dai->capture_widget;
4343 /* connect BE DAI playback if widgets are valid */
4344 codec = codec_dai->playback_widget;
4346 if (playback_cpu && codec) {
4347 if (dai_link->params && !rtd->playback_widget) {
4348 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4349 dai = snd_soc_dapm_new_dai(card, substream, "playback");
4352 rtd->playback_widget = dai;
4355 dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu,
4356 rtd->playback_widget,
4361 /* connect BE DAI capture if widgets are valid */
4362 codec = codec_dai->capture_widget;
4364 if (codec && capture_cpu) {
4365 if (dai_link->params && !rtd->capture_widget) {
4366 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4367 dai = snd_soc_dapm_new_dai(card, substream, "capture");
4370 rtd->capture_widget = dai;
4373 dapm_connect_dai_routes(&card->dapm, codec_dai, codec,
4374 rtd->capture_widget,
4375 cpu_dai, capture_cpu);
4379 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4382 struct snd_soc_dapm_widget *w;
4385 w = snd_soc_dai_get_widget(dai, stream);
4388 dapm_mark_dirty(w, "stream event");
4390 if (w->id == snd_soc_dapm_dai_in) {
4391 ep = SND_SOC_DAPM_EP_SOURCE;
4392 dapm_widget_invalidate_input_paths(w);
4394 ep = SND_SOC_DAPM_EP_SINK;
4395 dapm_widget_invalidate_output_paths(w);
4399 case SND_SOC_DAPM_STREAM_START:
4403 case SND_SOC_DAPM_STREAM_STOP:
4407 case SND_SOC_DAPM_STREAM_SUSPEND:
4408 case SND_SOC_DAPM_STREAM_RESUME:
4409 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4410 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4416 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4418 struct snd_soc_pcm_runtime *rtd;
4419 struct snd_soc_dai *codec_dai;
4422 /* for each BE DAI link... */
4423 for_each_card_rtds(card, rtd) {
4425 * dynamic FE links have no fixed DAI mapping.
4426 * CODEC<->CODEC links have no direct connection.
4428 if (rtd->dai_link->dynamic)
4431 if (rtd->num_cpus == 1) {
4432 for_each_rtd_codec_dais(rtd, i, codec_dai)
4433 dapm_connect_dai_pair(card, rtd, codec_dai,
4434 asoc_rtd_to_cpu(rtd, 0));
4435 } else if (rtd->num_codecs == rtd->num_cpus) {
4436 for_each_rtd_codec_dais(rtd, i, codec_dai)
4437 dapm_connect_dai_pair(card, rtd, codec_dai,
4438 asoc_rtd_to_cpu(rtd, i));
4441 "N cpus to M codecs link is not supported yet\n");
4446 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4449 struct snd_soc_dai *dai;
4452 for_each_rtd_dais(rtd, i, dai)
4453 soc_dapm_dai_stream_event(dai, stream, event);
4455 dapm_power_widgets(rtd->card, event);
4459 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4460 * @rtd: PCM runtime data
4461 * @stream: stream name
4462 * @event: stream event
4464 * Sends a stream event to the dapm core. The core then makes any
4465 * necessary widget power changes.
4467 * Returns 0 for success else error.
4469 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4472 struct snd_soc_card *card = rtd->card;
4474 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4475 soc_dapm_stream_event(rtd, stream, event);
4476 mutex_unlock(&card->dapm_mutex);
4479 void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
4481 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
4482 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
4483 /* powered down playback stream now */
4484 snd_soc_dapm_stream_event(rtd,
4485 SNDRV_PCM_STREAM_PLAYBACK,
4486 SND_SOC_DAPM_STREAM_STOP);
4488 /* start delayed pop wq here for playback streams */
4490 queue_delayed_work(system_power_efficient_wq,
4492 msecs_to_jiffies(rtd->pmdown_time));
4495 /* capture streams can be powered down now */
4496 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
4497 SND_SOC_DAPM_STREAM_STOP);
4500 EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
4503 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4504 * @dapm: DAPM context
4507 * Enables input/output pin and its parents or children widgets iff there is
4508 * a valid audio route and active audio stream.
4510 * Requires external locking.
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_unlocked(struct snd_soc_dapm_context *dapm,
4518 return snd_soc_dapm_set_pin(dapm, pin, 1);
4520 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4523 * snd_soc_dapm_enable_pin - enable pin.
4524 * @dapm: DAPM context
4527 * Enables input/output pin and its parents or children widgets iff there is
4528 * a valid audio route and active audio stream.
4530 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4531 * do any widget power switching.
4533 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4537 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4539 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4541 mutex_unlock(&dapm->card->dapm_mutex);
4545 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4548 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4549 * @dapm: DAPM context
4552 * Enables input/output pin regardless of any other state. This is
4553 * intended for use with microphone bias supplies used in microphone
4556 * Requires external locking.
4558 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4559 * do any widget power switching.
4561 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4564 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4567 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4571 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4572 if (!w->connected) {
4574 * w->force does not affect the number of input or output paths,
4575 * so we only have to recheck if w->connected is changed
4577 dapm_widget_invalidate_input_paths(w);
4578 dapm_widget_invalidate_output_paths(w);
4582 dapm_mark_dirty(w, "force enable");
4586 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4589 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4590 * @dapm: DAPM context
4593 * Enables input/output pin regardless of any other state. This is
4594 * intended for use with microphone bias supplies used in microphone
4597 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4598 * do any widget power switching.
4600 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4605 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4607 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4609 mutex_unlock(&dapm->card->dapm_mutex);
4613 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4616 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4617 * @dapm: DAPM context
4620 * Disables input/output pin and its parents or children widgets.
4622 * Requires external locking.
4624 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4625 * do any widget power switching.
4627 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4630 return snd_soc_dapm_set_pin(dapm, pin, 0);
4632 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4635 * snd_soc_dapm_disable_pin - disable pin.
4636 * @dapm: DAPM context
4639 * Disables input/output pin and its parents or children widgets.
4641 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4642 * do any widget power switching.
4644 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4649 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4651 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4653 mutex_unlock(&dapm->card->dapm_mutex);
4657 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4660 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4661 * @dapm: DAPM context
4664 * Marks the specified pin as being not connected, disabling it along
4665 * any parent or child widgets. At present this is identical to
4666 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4667 * additional things such as disabling controls which only affect
4668 * paths through the pin.
4670 * Requires external locking.
4672 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4673 * do any widget power switching.
4675 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4678 return snd_soc_dapm_set_pin(dapm, pin, 0);
4680 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4683 * snd_soc_dapm_nc_pin - permanently disable pin.
4684 * @dapm: DAPM context
4687 * Marks the specified pin as being not connected, disabling it along
4688 * any parent or child widgets. At present this is identical to
4689 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4690 * additional things such as disabling controls which only affect
4691 * paths through the pin.
4693 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4694 * do any widget power switching.
4696 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4700 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4702 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4704 mutex_unlock(&dapm->card->dapm_mutex);
4708 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4711 * snd_soc_dapm_get_pin_status - get audio pin status
4712 * @dapm: DAPM context
4713 * @pin: audio signal pin endpoint (or start point)
4715 * Get audio pin status - connected or disconnected.
4717 * Returns 1 for connected otherwise 0.
4719 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4722 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4725 return w->connected;
4729 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4732 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4733 * @dapm: DAPM context
4734 * @pin: audio signal pin endpoint (or start point)
4736 * Mark the given endpoint or pin as ignoring suspend. When the
4737 * system is disabled a path between two endpoints flagged as ignoring
4738 * suspend will not be disabled. The path must already be enabled via
4739 * normal means at suspend time, it will not be turned on if it was not
4742 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4745 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4748 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4752 w->ignore_suspend = 1;
4756 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4759 * snd_soc_dapm_free - free dapm resources
4760 * @dapm: DAPM context
4762 * Free all dapm widgets and resources.
4764 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4766 dapm_debugfs_cleanup(dapm);
4767 dapm_free_widgets(dapm);
4768 list_del(&dapm->list);
4770 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4772 void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4773 struct snd_soc_card *card,
4774 struct snd_soc_component *component)
4777 dapm->component = component;
4778 dapm->bias_level = SND_SOC_BIAS_OFF;
4781 dapm->dev = component->dev;
4782 dapm->idle_bias_off = !component->driver->idle_bias_on,
4783 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4785 dapm->dev = card->dev;
4788 INIT_LIST_HEAD(&dapm->list);
4789 /* see for_each_card_dapms */
4790 list_add(&dapm->list, &card->dapm_list);
4792 EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4794 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4796 struct snd_soc_card *card = dapm->card;
4797 struct snd_soc_dapm_widget *w;
4798 LIST_HEAD(down_list);
4801 mutex_lock(&card->dapm_mutex);
4803 for_each_card_widgets(dapm->card, w) {
4804 if (w->dapm != dapm)
4807 dapm_seq_insert(w, &down_list, false);
4813 /* If there were no widgets to power down we're already in
4817 if (dapm->bias_level == SND_SOC_BIAS_ON)
4818 snd_soc_dapm_set_bias_level(dapm,
4819 SND_SOC_BIAS_PREPARE);
4820 dapm_seq_run(card, &down_list, 0, false);
4821 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4822 snd_soc_dapm_set_bias_level(dapm,
4823 SND_SOC_BIAS_STANDBY);
4826 mutex_unlock(&card->dapm_mutex);
4830 * snd_soc_dapm_shutdown - callback for system shutdown
4832 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4834 struct snd_soc_dapm_context *dapm;
4836 for_each_card_dapms(card, dapm) {
4837 if (dapm != &card->dapm) {
4838 soc_dapm_shutdown_dapm(dapm);
4839 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4840 snd_soc_dapm_set_bias_level(dapm,
4845 soc_dapm_shutdown_dapm(&card->dapm);
4846 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4847 snd_soc_dapm_set_bias_level(&card->dapm,
4851 /* Module information */
4852 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4853 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4854 MODULE_LICENSE("GPL");