1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
9 // o Changes power status of internal codec blocks depending on the
10 // dynamic configuration of codec internal audio paths and active
12 // o Platform power domain - can support external components i.e. amps and
13 // mic/headphone insertion events.
14 // o Automatic Mic Bias support
15 // o Jack insertion power event initiation - e.g. hp insertion will enable
17 // o Delayed power down of audio subsystem to reduce pops between a quick
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/async.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/platform_device.h>
27 #include <linux/jiffies.h>
28 #include <linux/debugfs.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/pinctrl/consumer.h>
32 #include <linux/clk.h>
33 #include <linux/slab.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/initval.h>
40 #include <trace/events/asoc.h>
42 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
44 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
47 #define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
51 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
52 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
54 int (*connected)(struct snd_soc_dapm_widget *source,
55 struct snd_soc_dapm_widget *sink));
57 struct snd_soc_dapm_widget *
58 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
59 const struct snd_soc_dapm_widget *widget);
61 struct snd_soc_dapm_widget *
62 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
63 const struct snd_soc_dapm_widget *widget);
65 /* dapm power sequences - make this per codec in the future */
66 static int dapm_up_seq[] = {
67 [snd_soc_dapm_pre] = 1,
68 [snd_soc_dapm_regulator_supply] = 2,
69 [snd_soc_dapm_pinctrl] = 2,
70 [snd_soc_dapm_clock_supply] = 2,
71 [snd_soc_dapm_supply] = 3,
72 [snd_soc_dapm_micbias] = 4,
73 [snd_soc_dapm_vmid] = 4,
74 [snd_soc_dapm_dai_link] = 3,
75 [snd_soc_dapm_dai_in] = 5,
76 [snd_soc_dapm_dai_out] = 5,
77 [snd_soc_dapm_aif_in] = 5,
78 [snd_soc_dapm_aif_out] = 5,
79 [snd_soc_dapm_mic] = 6,
80 [snd_soc_dapm_siggen] = 6,
81 [snd_soc_dapm_input] = 6,
82 [snd_soc_dapm_output] = 6,
83 [snd_soc_dapm_mux] = 7,
84 [snd_soc_dapm_demux] = 7,
85 [snd_soc_dapm_dac] = 8,
86 [snd_soc_dapm_switch] = 9,
87 [snd_soc_dapm_mixer] = 9,
88 [snd_soc_dapm_mixer_named_ctl] = 9,
89 [snd_soc_dapm_pga] = 10,
90 [snd_soc_dapm_buffer] = 10,
91 [snd_soc_dapm_scheduler] = 10,
92 [snd_soc_dapm_effect] = 10,
93 [snd_soc_dapm_src] = 10,
94 [snd_soc_dapm_asrc] = 10,
95 [snd_soc_dapm_encoder] = 10,
96 [snd_soc_dapm_decoder] = 10,
97 [snd_soc_dapm_adc] = 11,
98 [snd_soc_dapm_out_drv] = 12,
99 [snd_soc_dapm_hp] = 12,
100 [snd_soc_dapm_spk] = 12,
101 [snd_soc_dapm_line] = 12,
102 [snd_soc_dapm_sink] = 12,
103 [snd_soc_dapm_kcontrol] = 13,
104 [snd_soc_dapm_post] = 14,
107 static int dapm_down_seq[] = {
108 [snd_soc_dapm_pre] = 1,
109 [snd_soc_dapm_kcontrol] = 2,
110 [snd_soc_dapm_adc] = 3,
111 [snd_soc_dapm_hp] = 4,
112 [snd_soc_dapm_spk] = 4,
113 [snd_soc_dapm_line] = 4,
114 [snd_soc_dapm_out_drv] = 4,
115 [snd_soc_dapm_sink] = 4,
116 [snd_soc_dapm_pga] = 5,
117 [snd_soc_dapm_buffer] = 5,
118 [snd_soc_dapm_scheduler] = 5,
119 [snd_soc_dapm_effect] = 5,
120 [snd_soc_dapm_src] = 5,
121 [snd_soc_dapm_asrc] = 5,
122 [snd_soc_dapm_encoder] = 5,
123 [snd_soc_dapm_decoder] = 5,
124 [snd_soc_dapm_switch] = 6,
125 [snd_soc_dapm_mixer_named_ctl] = 6,
126 [snd_soc_dapm_mixer] = 6,
127 [snd_soc_dapm_dac] = 7,
128 [snd_soc_dapm_mic] = 8,
129 [snd_soc_dapm_siggen] = 8,
130 [snd_soc_dapm_input] = 8,
131 [snd_soc_dapm_output] = 8,
132 [snd_soc_dapm_micbias] = 9,
133 [snd_soc_dapm_vmid] = 9,
134 [snd_soc_dapm_mux] = 10,
135 [snd_soc_dapm_demux] = 10,
136 [snd_soc_dapm_aif_in] = 11,
137 [snd_soc_dapm_aif_out] = 11,
138 [snd_soc_dapm_dai_in] = 11,
139 [snd_soc_dapm_dai_out] = 11,
140 [snd_soc_dapm_dai_link] = 12,
141 [snd_soc_dapm_supply] = 13,
142 [snd_soc_dapm_clock_supply] = 14,
143 [snd_soc_dapm_pinctrl] = 14,
144 [snd_soc_dapm_regulator_supply] = 14,
145 [snd_soc_dapm_post] = 15,
148 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
150 if (dapm->card && dapm->card->instantiated)
151 lockdep_assert_held(&dapm->card->dapm_mutex);
154 static void pop_wait(u32 pop_time)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
161 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
169 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
174 vsnprintf(buf, PAGE_SIZE, fmt, args);
175 dev_info(dev, "%s", buf);
181 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
183 return !list_empty(&w->dirty);
186 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
188 dapm_assert_locked(w->dapm);
190 if (!dapm_dirty_widget(w)) {
191 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
193 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
198 * Common implementation for dapm_widget_invalidate_input_paths() and
199 * dapm_widget_invalidate_output_paths(). The function is inlined since the
200 * combined size of the two specialized functions is only marginally larger then
201 * the size of the generic function and at the same time the fast path of the
202 * specialized functions is significantly smaller than the generic function.
204 static __always_inline void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
207 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
208 struct snd_soc_dapm_widget *node;
209 struct snd_soc_dapm_path *p;
212 dapm_assert_locked(w->dapm);
214 if (w->endpoints[dir] == -1)
217 list_add_tail(&w->work_list, &list);
218 w->endpoints[dir] = -1;
220 list_for_each_entry(w, &list, work_list) {
221 snd_soc_dapm_widget_for_each_path(w, dir, p) {
222 if (p->is_supply || p->weak || !p->connect)
224 node = p->node[rdir];
225 if (node->endpoints[dir] != -1) {
226 node->endpoints[dir] = -1;
227 list_add_tail(&node->work_list, &list);
234 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
236 * @w: The widget for which to invalidate the cached number of input paths
238 * Resets the cached number of inputs for the specified widget and all widgets
239 * that can be reached via outcoming paths from the widget.
241 * This function must be called if the number of output paths for a widget might
242 * have changed. E.g. if the source state of a widget changes or a path is added
243 * or activated with the widget as the sink.
245 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
247 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
251 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
253 * @w: The widget for which to invalidate the cached number of output paths
255 * Resets the cached number of outputs for the specified widget and all widgets
256 * that can be reached via incoming paths from the widget.
258 * This function must be called if the number of output paths for a widget might
259 * have changed. E.g. if the sink state of a widget changes or a path is added
260 * or activated with the widget as the source.
262 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
264 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
268 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
269 * for the widgets connected to a path
270 * @p: The path to invalidate
272 * Resets the cached number of inputs for the sink of the path and the cached
273 * number of outputs for the source of the path.
275 * This function must be called when a path is added, removed or the connected
278 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
281 * Weak paths or supply paths do not influence the number of input or
282 * output paths of their neighbors.
284 if (p->weak || p->is_supply)
288 * The number of connected endpoints is the sum of the number of
289 * connected endpoints of all neighbors. If a node with 0 connected
290 * endpoints is either connected or disconnected that sum won't change,
291 * so there is no need to re-check the path.
293 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
294 dapm_widget_invalidate_input_paths(p->sink);
295 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
296 dapm_widget_invalidate_output_paths(p->source);
299 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
301 struct snd_soc_dapm_widget *w;
303 mutex_lock(&card->dapm_mutex);
305 list_for_each_entry(w, &card->widgets, list) {
307 dapm_mark_dirty(w, "Rechecking endpoints");
308 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
309 dapm_widget_invalidate_output_paths(w);
310 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
311 dapm_widget_invalidate_input_paths(w);
315 mutex_unlock(&card->dapm_mutex);
317 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
319 /* create a new dapm widget */
320 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
321 const struct snd_soc_dapm_widget *_widget)
323 struct snd_soc_dapm_widget *w;
325 w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
330 * w->name is duplicated in caller, but w->sname isn't.
331 * Duplicate it here if defined
333 if (_widget->sname) {
334 w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
343 struct dapm_kcontrol_data {
345 struct snd_soc_dapm_widget *widget;
346 struct list_head paths;
347 struct snd_soc_dapm_widget_list *wlist;
350 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
351 struct snd_kcontrol *kcontrol, const char *ctrl_name)
353 struct dapm_kcontrol_data *data;
354 struct soc_mixer_control *mc;
359 data = kzalloc(sizeof(*data), GFP_KERNEL);
363 INIT_LIST_HEAD(&data->paths);
365 switch (widget->id) {
366 case snd_soc_dapm_switch:
367 case snd_soc_dapm_mixer:
368 case snd_soc_dapm_mixer_named_ctl:
369 mc = (struct soc_mixer_control *)kcontrol->private_value;
371 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
372 dev_warn(widget->dapm->dev,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
376 if (mc->autodisable) {
377 struct snd_soc_dapm_widget template;
379 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
386 memset(&template, 0, sizeof(template));
387 template.reg = mc->reg;
388 template.mask = (1 << fls(mc->max)) - 1;
389 template.shift = mc->shift;
391 template.off_val = mc->max;
393 template.off_val = 0;
394 template.on_val = template.off_val;
395 template.id = snd_soc_dapm_kcontrol;
396 template.name = name;
398 data->value = template.on_val;
401 snd_soc_dapm_new_control_unlocked(widget->dapm,
404 if (IS_ERR(data->widget)) {
405 ret = PTR_ERR(data->widget);
410 case snd_soc_dapm_demux:
411 case snd_soc_dapm_mux:
412 e = (struct soc_enum *)kcontrol->private_value;
414 if (e->autodisable) {
415 struct snd_soc_dapm_widget template;
417 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
424 memset(&template, 0, sizeof(template));
425 template.reg = e->reg;
426 template.mask = e->mask;
427 template.shift = e->shift_l;
428 template.off_val = snd_soc_enum_item_to_val(e, 0);
429 template.on_val = template.off_val;
430 template.id = snd_soc_dapm_kcontrol;
431 template.name = name;
433 data->value = template.on_val;
435 data->widget = snd_soc_dapm_new_control_unlocked(
436 widget->dapm, &template);
438 if (IS_ERR(data->widget)) {
439 ret = PTR_ERR(data->widget);
443 snd_soc_dapm_add_path(widget->dapm, data->widget,
451 kcontrol->private_data = data;
460 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
462 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
464 list_del(&data->paths);
469 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol *kcontrol)
472 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
477 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
478 struct snd_soc_dapm_widget *widget)
480 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
481 struct snd_soc_dapm_widget_list *new_wlist;
485 n = data->wlist->num_widgets + 1;
489 new_wlist = krealloc(data->wlist,
490 struct_size(new_wlist, widgets, n),
495 new_wlist->widgets[n - 1] = widget;
496 new_wlist->num_widgets = n;
498 data->wlist = new_wlist;
503 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
504 struct snd_soc_dapm_path *path)
506 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
508 list_add_tail(&path->list_kcontrol, &data->paths);
511 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
513 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
518 return data->widget->power;
521 static struct list_head *dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol *kcontrol)
524 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
529 #define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
533 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
535 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
539 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
541 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
544 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
546 if (data->value == value)
550 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
551 case snd_soc_dapm_switch:
552 case snd_soc_dapm_mixer:
553 case snd_soc_dapm_mixer_named_ctl:
554 data->widget->on_val = value & data->widget->mask;
556 case snd_soc_dapm_demux:
557 case snd_soc_dapm_mux:
558 data->widget->on_val = value >> data->widget->shift;
561 data->widget->on_val = value;
572 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
574 * @kcontrol: The kcontrol
576 struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol *kcontrol)
579 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
581 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
584 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
586 * @kcontrol: The kcontrol
588 * Note: This function must only be used on kcontrols that are known to have
589 * been registered for a CODEC. Otherwise the behaviour is undefined.
591 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol *kcontrol)
594 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
596 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
598 static void dapm_reset(struct snd_soc_card *card)
600 struct snd_soc_dapm_widget *w;
602 lockdep_assert_held(&card->dapm_mutex);
604 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
606 list_for_each_entry(w, &card->widgets, list) {
607 w->new_power = w->power;
608 w->power_checked = false;
612 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
614 if (!dapm->component)
616 return dapm->component->name_prefix;
619 static int soc_dapm_read(struct snd_soc_dapm_context *dapm, int reg,
622 if (!dapm->component)
624 return snd_soc_component_read(dapm->component, reg, value);
627 static int soc_dapm_update_bits(struct snd_soc_dapm_context *dapm,
628 int reg, unsigned int mask, unsigned int value)
630 if (!dapm->component)
632 return snd_soc_component_update_bits(dapm->component, reg,
636 static int soc_dapm_test_bits(struct snd_soc_dapm_context *dapm,
637 int reg, unsigned int mask, unsigned int value)
639 if (!dapm->component)
641 return snd_soc_component_test_bits(dapm->component, reg, mask, value);
644 static void soc_dapm_async_complete(struct snd_soc_dapm_context *dapm)
647 snd_soc_component_async_complete(dapm->component);
650 static struct snd_soc_dapm_widget *
651 dapm_wcache_lookup(struct snd_soc_dapm_wcache *wcache, const char *name)
653 struct snd_soc_dapm_widget *w = wcache->widget;
654 struct list_head *wlist;
659 wlist = &w->dapm->card->widgets;
661 list_for_each_entry_from(w, wlist, list) {
662 if (!strcmp(name, w->name))
673 static inline void dapm_wcache_update(struct snd_soc_dapm_wcache *wcache,
674 struct snd_soc_dapm_widget *w)
680 * snd_soc_dapm_force_bias_level() - Sets the DAPM bias level
681 * @dapm: The DAPM context for which to set the level
682 * @level: The level to set
684 * Forces the DAPM bias level to a specific state. It will call the bias level
685 * callback of DAPM context with the specified level. This will even happen if
686 * the context is already at the same level. Furthermore it will not go through
687 * the normal bias level sequencing, meaning any intermediate states between the
688 * current and the target state will not be entered.
690 * Note that the change in bias level is only temporary and the next time
691 * snd_soc_dapm_sync() is called the state will be set to the level as
692 * determined by the DAPM core. The function is mainly intended to be used to
693 * used during probe or resume from suspend to power up the device so
694 * initialization can be done, before the DAPM core takes over.
696 int snd_soc_dapm_force_bias_level(struct snd_soc_dapm_context *dapm,
697 enum snd_soc_bias_level level)
702 ret = snd_soc_component_set_bias_level(dapm->component, level);
705 dapm->bias_level = level;
709 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_bias_level);
712 * snd_soc_dapm_set_bias_level - set the bias level for the system
713 * @dapm: DAPM context
714 * @level: level to configure
716 * Configure the bias (power) levels for the SoC audio device.
718 * Returns 0 for success else error.
720 static int snd_soc_dapm_set_bias_level(struct snd_soc_dapm_context *dapm,
721 enum snd_soc_bias_level level)
723 struct snd_soc_card *card = dapm->card;
726 trace_snd_soc_bias_level_start(card, level);
728 if (card && card->set_bias_level)
729 ret = card->set_bias_level(card, dapm, level);
733 if (!card || dapm != &card->dapm)
734 ret = snd_soc_dapm_force_bias_level(dapm, level);
739 if (card && card->set_bias_level_post)
740 ret = card->set_bias_level_post(card, dapm, level);
742 trace_snd_soc_bias_level_done(card, level);
747 /* connect mux widget to its interconnecting audio paths */
748 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
749 struct snd_soc_dapm_path *path, const char *control_name,
750 struct snd_soc_dapm_widget *w)
752 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
753 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
754 unsigned int val, item;
757 if (e->reg != SND_SOC_NOPM) {
758 soc_dapm_read(dapm, e->reg, &val);
759 val = (val >> e->shift_l) & e->mask;
760 item = snd_soc_enum_val_to_item(e, val);
762 /* since a virtual mux has no backing registers to
763 * decide which path to connect, it will try to match
764 * with the first enumeration. This is to ensure
765 * that the default mux choice (the first) will be
766 * correctly powered up during initialization.
771 i = match_string(e->texts, e->items, control_name);
775 path->name = e->texts[i];
776 path->connect = (i == item);
781 /* set up initial codec paths */
782 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
785 struct soc_mixer_control *mc = (struct soc_mixer_control *)
786 p->sink->kcontrol_news[i].private_value;
787 unsigned int reg = mc->reg;
788 unsigned int shift = mc->shift;
789 unsigned int max = mc->max;
790 unsigned int mask = (1 << fls(max)) - 1;
791 unsigned int invert = mc->invert;
794 if (reg != SND_SOC_NOPM) {
795 soc_dapm_read(p->sink->dapm, reg, &val);
797 * The nth_path argument allows this function to know
798 * which path of a kcontrol it is setting the initial
799 * status for. Ideally this would support any number
800 * of paths and channels. But since kcontrols only come
801 * in mono and stereo variants, we are limited to 2
804 * The following code assumes for stereo controls the
805 * first path is the left channel, and all remaining
806 * paths are the right channel.
808 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
810 soc_dapm_read(p->sink->dapm, mc->rreg, &val);
811 val = (val >> mc->rshift) & mask;
813 val = (val >> shift) & mask;
819 /* since a virtual mixer has no backing registers to
820 * decide which path to connect, it will try to match
821 * with initial state. This is to ensure
822 * that the default mixer choice will be
823 * correctly powered up during initialization.
829 /* connect mixer widget to its interconnecting audio paths */
830 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
831 struct snd_soc_dapm_path *path, const char *control_name)
835 /* search for mixer kcontrol */
836 for (i = 0; i < path->sink->num_kcontrols; i++) {
837 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
838 path->name = path->sink->kcontrol_news[i].name;
839 dapm_set_mixer_path_status(path, i, nth_path++);
846 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
847 struct snd_soc_dapm_widget *kcontrolw,
848 const struct snd_kcontrol_new *kcontrol_new,
849 struct snd_kcontrol **kcontrol)
851 struct snd_soc_dapm_widget *w;
856 list_for_each_entry(w, &dapm->card->widgets, list) {
857 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
859 for (i = 0; i < w->num_kcontrols; i++) {
860 if (&w->kcontrol_news[i] == kcontrol_new) {
862 *kcontrol = w->kcontrols[i];
872 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
873 * create it. Either way, add the widget into the control's widget list
875 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
878 struct snd_soc_dapm_context *dapm = w->dapm;
879 struct snd_card *card = dapm->card->snd_card;
883 struct snd_kcontrol *kcontrol;
884 bool wname_in_long_name, kcname_in_long_name;
885 char *long_name = NULL;
889 prefix = soc_dapm_prefix(dapm);
891 prefix_len = strlen(prefix) + 1;
895 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
900 wname_in_long_name = false;
901 kcname_in_long_name = true;
904 case snd_soc_dapm_switch:
905 case snd_soc_dapm_mixer:
906 case snd_soc_dapm_pga:
907 case snd_soc_dapm_effect:
908 case snd_soc_dapm_out_drv:
909 wname_in_long_name = true;
910 kcname_in_long_name = true;
912 case snd_soc_dapm_mixer_named_ctl:
913 wname_in_long_name = false;
914 kcname_in_long_name = true;
916 case snd_soc_dapm_demux:
917 case snd_soc_dapm_mux:
918 wname_in_long_name = true;
919 kcname_in_long_name = false;
926 if (wname_in_long_name && kcname_in_long_name) {
928 * The control will get a prefix from the control
929 * creation process but we're also using the same
930 * prefix for widgets so cut the prefix off the
931 * front of the widget name.
933 long_name = kasprintf(GFP_KERNEL, "%s %s",
934 w->name + prefix_len,
935 w->kcontrol_news[kci].name);
936 if (long_name == NULL)
940 } else if (wname_in_long_name) {
942 name = w->name + prefix_len;
945 name = w->kcontrol_news[kci].name;
948 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
955 kcontrol->private_free = dapm_kcontrol_free;
957 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
959 snd_ctl_free_one(kcontrol);
963 ret = snd_ctl_add(card, kcontrol);
966 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
972 ret = dapm_kcontrol_add_widget(kcontrol, w);
974 w->kcontrols[kci] = kcontrol;
982 /* create new dapm mixer control */
983 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
986 struct snd_soc_dapm_path *path;
987 struct dapm_kcontrol_data *data;
990 for (i = 0; i < w->num_kcontrols; i++) {
992 snd_soc_dapm_widget_for_each_source_path(w, path) {
993 /* mixer/mux paths name must match control name */
994 if (path->name != (char *)w->kcontrol_news[i].name)
997 if (!w->kcontrols[i]) {
998 ret = dapm_create_or_share_kcontrol(w, i);
1003 dapm_kcontrol_add_path(w->kcontrols[i], path);
1005 data = snd_kcontrol_chip(w->kcontrols[i]);
1007 snd_soc_dapm_add_path(data->widget->dapm,
1017 /* create new dapm mux control */
1018 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1020 struct snd_soc_dapm_context *dapm = w->dapm;
1021 enum snd_soc_dapm_direction dir;
1022 struct snd_soc_dapm_path *path;
1027 case snd_soc_dapm_mux:
1028 dir = SND_SOC_DAPM_DIR_OUT;
1031 case snd_soc_dapm_demux:
1032 dir = SND_SOC_DAPM_DIR_IN;
1039 if (w->num_kcontrols != 1) {
1041 "ASoC: %s %s has incorrect number of controls\n", type,
1046 if (list_empty(&w->edges[dir])) {
1047 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1051 ret = dapm_create_or_share_kcontrol(w, 0);
1055 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1057 dapm_kcontrol_add_path(w->kcontrols[0], path);
1063 /* create new dapm volume control */
1064 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1068 for (i = 0; i < w->num_kcontrols; i++) {
1069 ret = dapm_create_or_share_kcontrol(w, i);
1077 /* create new dapm dai link control */
1078 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1081 struct snd_kcontrol *kcontrol;
1082 struct snd_soc_dapm_context *dapm = w->dapm;
1083 struct snd_card *card = dapm->card->snd_card;
1084 struct snd_soc_pcm_runtime *rtd = w->priv;
1086 /* create control for links with > 1 config */
1087 if (rtd->dai_link->num_params <= 1)
1091 for (i = 0; i < w->num_kcontrols; i++) {
1092 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1094 ret = snd_ctl_add(card, kcontrol);
1097 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1098 w->name, w->kcontrol_news[i].name, ret);
1101 kcontrol->private_data = w;
1102 w->kcontrols[i] = kcontrol;
1108 /* We implement power down on suspend by checking the power state of
1109 * the ALSA card - when we are suspending the ALSA state for the card
1112 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1114 int level = snd_power_get_state(widget->dapm->card->snd_card);
1117 case SNDRV_CTL_POWER_D3hot:
1118 case SNDRV_CTL_POWER_D3cold:
1119 if (widget->ignore_suspend)
1120 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1122 return widget->ignore_suspend;
1128 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1129 struct list_head *widgets)
1131 struct snd_soc_dapm_widget *w;
1132 struct list_head *it;
1133 unsigned int size = 0;
1136 list_for_each(it, widgets)
1139 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1143 list_for_each_entry(w, widgets, work_list)
1144 (*list)->widgets[i++] = w;
1146 (*list)->num_widgets = i;
1152 * Recursively reset the cached number of inputs or outputs for the specified
1153 * widget and all widgets that can be reached via incoming or outcoming paths
1156 static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1157 enum snd_soc_dapm_direction dir)
1159 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1160 struct snd_soc_dapm_path *path;
1162 widget->endpoints[dir] = -1;
1164 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1165 if (path->weak || path->is_supply)
1171 if (path->connect) {
1173 invalidate_paths_ep(path->node[dir], dir);
1180 * Common implementation for is_connected_output_ep() and
1181 * is_connected_input_ep(). The function is inlined since the combined size of
1182 * the two specialized functions is only marginally larger then the size of the
1183 * generic function and at the same time the fast path of the specialized
1184 * functions is significantly smaller than the generic function.
1186 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1187 struct list_head *list, enum snd_soc_dapm_direction dir,
1188 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1189 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1190 enum snd_soc_dapm_direction)),
1191 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1192 enum snd_soc_dapm_direction))
1194 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1195 struct snd_soc_dapm_path *path;
1198 if (widget->endpoints[dir] >= 0)
1199 return widget->endpoints[dir];
1201 DAPM_UPDATE_STAT(widget, path_checks);
1203 /* do we need to add this widget to the list ? */
1205 list_add_tail(&widget->work_list, list);
1207 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1209 custom_stop_condition = NULL;
1212 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1213 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1214 return widget->endpoints[dir];
1217 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1218 DAPM_UPDATE_STAT(widget, neighbour_checks);
1220 if (path->weak || path->is_supply)
1226 trace_snd_soc_dapm_path(widget, dir, path);
1228 if (path->connect) {
1230 con += fn(path->node[dir], list, custom_stop_condition);
1235 widget->endpoints[dir] = con;
1241 * Recursively check for a completed path to an active or physically connected
1242 * output widget. Returns number of complete paths.
1244 * Optionally, can be supplied with a function acting as a stopping condition.
1245 * This function takes the dapm widget currently being examined and the walk
1246 * direction as an arguments, it should return true if widgets from that point
1247 * in the graph onwards should not be added to the widget list.
1249 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1250 struct list_head *list,
1251 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1252 enum snd_soc_dapm_direction))
1254 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1255 is_connected_output_ep, custom_stop_condition);
1259 * Recursively check for a completed path to an active or physically connected
1260 * input widget. Returns number of complete paths.
1262 * Optionally, can be supplied with a function acting as a stopping condition.
1263 * This function takes the dapm widget currently being examined and the walk
1264 * direction as an arguments, it should return true if the walk should be
1265 * stopped and false otherwise.
1267 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1268 struct list_head *list,
1269 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1270 enum snd_soc_dapm_direction))
1272 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1273 is_connected_input_ep, custom_stop_condition);
1277 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1278 * @dai: the soc DAI.
1279 * @stream: stream direction.
1280 * @list: list of active widgets for this stream.
1281 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1282 * walk based on custom logic.
1284 * Queries DAPM graph as to whether a valid audio stream path exists for
1285 * the initial stream specified by name. This takes into account
1286 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1288 * Optionally, can be supplied with a function acting as a stopping condition.
1289 * This function takes the dapm widget currently being examined and the walk
1290 * direction as an arguments, it should return true if the walk should be
1291 * stopped and false otherwise.
1293 * Returns the number of valid paths or negative error.
1295 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1296 struct snd_soc_dapm_widget_list **list,
1297 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1298 enum snd_soc_dapm_direction))
1300 struct snd_soc_card *card = dai->component->card;
1301 struct snd_soc_dapm_widget *w;
1306 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1308 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1309 w = dai->playback_widget;
1310 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1311 paths = is_connected_output_ep(w, &widgets,
1312 custom_stop_condition);
1314 w = dai->capture_widget;
1315 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1316 paths = is_connected_input_ep(w, &widgets,
1317 custom_stop_condition);
1320 /* Drop starting point */
1321 list_del(widgets.next);
1323 ret = dapm_widget_list_create(list, &widgets);
1327 trace_snd_soc_dapm_connected(paths, stream);
1328 mutex_unlock(&card->dapm_mutex);
1334 * Handler for regulator supply widget.
1336 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1337 struct snd_kcontrol *kcontrol, int event)
1341 soc_dapm_async_complete(w->dapm);
1343 if (SND_SOC_DAPM_EVENT_ON(event)) {
1344 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1345 ret = regulator_allow_bypass(w->regulator, false);
1347 dev_warn(w->dapm->dev,
1348 "ASoC: Failed to unbypass %s: %d\n",
1352 return regulator_enable(w->regulator);
1354 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1355 ret = regulator_allow_bypass(w->regulator, true);
1357 dev_warn(w->dapm->dev,
1358 "ASoC: Failed to bypass %s: %d\n",
1362 return regulator_disable_deferred(w->regulator, w->shift);
1365 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1368 * Handler for pinctrl widget.
1370 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1371 struct snd_kcontrol *kcontrol, int event)
1373 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1374 struct pinctrl *p = w->pinctrl;
1375 struct pinctrl_state *s;
1380 if (SND_SOC_DAPM_EVENT_ON(event))
1381 s = pinctrl_lookup_state(p, priv->active_state);
1383 s = pinctrl_lookup_state(p, priv->sleep_state);
1388 return pinctrl_select_state(p, s);
1390 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1393 * Handler for clock supply widget.
1395 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1396 struct snd_kcontrol *kcontrol, int event)
1401 soc_dapm_async_complete(w->dapm);
1403 if (SND_SOC_DAPM_EVENT_ON(event)) {
1404 return clk_prepare_enable(w->clk);
1406 clk_disable_unprepare(w->clk);
1412 EXPORT_SYMBOL_GPL(dapm_clock_event);
1414 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1416 if (w->power_checked)
1417 return w->new_power;
1422 w->new_power = w->power_check(w);
1424 w->power_checked = true;
1426 return w->new_power;
1429 /* Generic check to see if a widget should be powered. */
1430 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1434 DAPM_UPDATE_STAT(w, power_checks);
1436 in = is_connected_input_ep(w, NULL, NULL);
1437 out = is_connected_output_ep(w, NULL, NULL);
1438 return out != 0 && in != 0;
1441 /* Check to see if a power supply is needed */
1442 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1444 struct snd_soc_dapm_path *path;
1446 DAPM_UPDATE_STAT(w, power_checks);
1448 /* Check if one of our outputs is connected */
1449 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1450 DAPM_UPDATE_STAT(w, neighbour_checks);
1455 if (path->connected &&
1456 !path->connected(path->source, path->sink))
1459 if (dapm_widget_power_check(path->sink))
1466 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1468 return w->connected;
1471 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1472 struct snd_soc_dapm_widget *b,
1477 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1478 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1483 sort = dapm_down_seq;
1485 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1486 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1488 if (sort[a->id] != sort[b->id])
1489 return sort[a->id] - sort[b->id];
1490 if (a->subseq != b->subseq) {
1492 return a->subseq - b->subseq;
1494 return b->subseq - a->subseq;
1496 if (a->reg != b->reg)
1497 return a->reg - b->reg;
1498 if (a->dapm != b->dapm)
1499 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1504 /* Insert a widget in order into a DAPM power sequence. */
1505 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1506 struct list_head *list,
1509 struct snd_soc_dapm_widget *w;
1511 list_for_each_entry(w, list, power_list)
1512 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1513 list_add_tail(&new_widget->power_list, &w->power_list);
1517 list_add_tail(&new_widget->power_list, list);
1520 static void dapm_seq_check_event(struct snd_soc_card *card,
1521 struct snd_soc_dapm_widget *w, int event)
1523 const char *ev_name;
1527 case SND_SOC_DAPM_PRE_PMU:
1528 ev_name = "PRE_PMU";
1531 case SND_SOC_DAPM_POST_PMU:
1532 ev_name = "POST_PMU";
1535 case SND_SOC_DAPM_PRE_PMD:
1536 ev_name = "PRE_PMD";
1539 case SND_SOC_DAPM_POST_PMD:
1540 ev_name = "POST_PMD";
1543 case SND_SOC_DAPM_WILL_PMU:
1544 ev_name = "WILL_PMU";
1547 case SND_SOC_DAPM_WILL_PMD:
1548 ev_name = "WILL_PMD";
1552 WARN(1, "Unknown event %d\n", event);
1556 if (w->new_power != power)
1559 if (w->event && (w->event_flags & event)) {
1560 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1562 soc_dapm_async_complete(w->dapm);
1563 trace_snd_soc_dapm_widget_event_start(w, event);
1564 ret = w->event(w, NULL, event);
1565 trace_snd_soc_dapm_widget_event_done(w, event);
1567 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1568 ev_name, w->name, ret);
1572 /* Apply the coalesced changes from a DAPM sequence */
1573 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1574 struct list_head *pending)
1576 struct snd_soc_dapm_context *dapm;
1577 struct snd_soc_dapm_widget *w;
1579 unsigned int value = 0;
1580 unsigned int mask = 0;
1582 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1586 list_for_each_entry(w, pending, power_list) {
1587 WARN_ON(reg != w->reg || dapm != w->dapm);
1588 w->power = w->new_power;
1590 mask |= w->mask << w->shift;
1592 value |= w->on_val << w->shift;
1594 value |= w->off_val << w->shift;
1596 pop_dbg(dapm->dev, card->pop_time,
1597 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1598 w->name, reg, value, mask);
1600 /* Check for events */
1601 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1602 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1606 /* Any widget will do, they should all be updating the
1610 pop_dbg(dapm->dev, card->pop_time,
1611 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1612 value, mask, reg, card->pop_time);
1613 pop_wait(card->pop_time);
1614 soc_dapm_update_bits(dapm, reg, mask, value);
1617 list_for_each_entry(w, pending, power_list) {
1618 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1619 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1623 /* Apply a DAPM power sequence.
1625 * We walk over a pre-sorted list of widgets to apply power to. In
1626 * order to minimise the number of writes to the device required
1627 * multiple widgets will be updated in a single write where possible.
1628 * Currently anything that requires more than a single write is not
1631 static void dapm_seq_run(struct snd_soc_card *card,
1632 struct list_head *list, int event, bool power_up)
1634 struct snd_soc_dapm_widget *w, *n;
1635 struct snd_soc_dapm_context *d;
1638 int cur_subseq = -1;
1639 int cur_reg = SND_SOC_NOPM;
1640 struct snd_soc_dapm_context *cur_dapm = NULL;
1647 sort = dapm_down_seq;
1649 list_for_each_entry_safe(w, n, list, power_list) {
1652 /* Do we need to apply any queued changes? */
1653 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1654 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1655 if (!list_empty(&pending))
1656 dapm_seq_run_coalesced(card, &pending);
1658 if (cur_dapm && cur_dapm->component) {
1659 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1660 if (sort[i] == cur_sort)
1661 snd_soc_component_seq_notifier(
1662 cur_dapm->component,
1666 if (cur_dapm && w->dapm != cur_dapm)
1667 soc_dapm_async_complete(cur_dapm);
1669 INIT_LIST_HEAD(&pending);
1671 cur_subseq = INT_MIN;
1672 cur_reg = SND_SOC_NOPM;
1677 case snd_soc_dapm_pre:
1679 list_for_each_entry_safe_continue(w, n, list,
1682 if (event == SND_SOC_DAPM_STREAM_START)
1684 NULL, SND_SOC_DAPM_PRE_PMU);
1685 else if (event == SND_SOC_DAPM_STREAM_STOP)
1687 NULL, SND_SOC_DAPM_PRE_PMD);
1690 case snd_soc_dapm_post:
1692 list_for_each_entry_safe_continue(w, n, list,
1695 if (event == SND_SOC_DAPM_STREAM_START)
1697 NULL, SND_SOC_DAPM_POST_PMU);
1698 else if (event == SND_SOC_DAPM_STREAM_STOP)
1700 NULL, SND_SOC_DAPM_POST_PMD);
1704 /* Queue it up for application */
1705 cur_sort = sort[w->id];
1706 cur_subseq = w->subseq;
1709 list_move(&w->power_list, &pending);
1714 dev_err(w->dapm->dev,
1715 "ASoC: Failed to apply widget power: %d\n", ret);
1718 if (!list_empty(&pending))
1719 dapm_seq_run_coalesced(card, &pending);
1721 if (cur_dapm && cur_dapm->component) {
1722 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1723 if (sort[i] == cur_sort)
1724 snd_soc_component_seq_notifier(
1725 cur_dapm->component,
1729 list_for_each_entry(d, &card->dapm_list, list) {
1730 soc_dapm_async_complete(d);
1734 static void dapm_widget_update(struct snd_soc_card *card)
1736 struct snd_soc_dapm_update *update = card->update;
1737 struct snd_soc_dapm_widget_list *wlist;
1738 struct snd_soc_dapm_widget *w = NULL;
1742 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1745 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1747 for (wi = 0; wi < wlist->num_widgets; wi++) {
1748 w = wlist->widgets[wi];
1750 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1751 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1753 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1761 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1764 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1767 if (update->has_second_set) {
1768 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1769 update->mask2, update->val2);
1771 dev_err(w->dapm->dev,
1772 "ASoC: %s DAPM update failed: %d\n",
1776 for (wi = 0; wi < wlist->num_widgets; wi++) {
1777 w = wlist->widgets[wi];
1779 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1780 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1782 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1788 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1789 * they're changing state.
1791 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1793 struct snd_soc_dapm_context *d = data;
1796 /* If we're off and we're not supposed to go into STANDBY */
1797 if (d->bias_level == SND_SOC_BIAS_OFF &&
1798 d->target_bias_level != SND_SOC_BIAS_OFF) {
1800 pm_runtime_get_sync(d->dev);
1802 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1805 "ASoC: Failed to turn on bias: %d\n", ret);
1808 /* Prepare for a transition to ON or away from ON */
1809 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1810 d->bias_level != SND_SOC_BIAS_ON) ||
1811 (d->target_bias_level != SND_SOC_BIAS_ON &&
1812 d->bias_level == SND_SOC_BIAS_ON)) {
1813 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1816 "ASoC: Failed to prepare bias: %d\n", ret);
1820 /* Async callback run prior to DAPM sequences - brings to their final
1823 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1825 struct snd_soc_dapm_context *d = data;
1828 /* If we just powered the last thing off drop to standby bias */
1829 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1830 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1831 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1832 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1834 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1838 /* If we're in standby and can support bias off then do that */
1839 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1840 d->target_bias_level == SND_SOC_BIAS_OFF) {
1841 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1843 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1847 pm_runtime_put(d->dev);
1850 /* If we just powered up then move to active bias */
1851 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1852 d->target_bias_level == SND_SOC_BIAS_ON) {
1853 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1855 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1860 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1861 bool power, bool connect)
1863 /* If a connection is being made or broken then that update
1864 * will have marked the peer dirty, otherwise the widgets are
1865 * not connected and this update has no impact. */
1869 /* If the peer is already in the state we're moving to then we
1870 * won't have an impact on it. */
1871 if (power != peer->power)
1872 dapm_mark_dirty(peer, "peer state change");
1875 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1876 struct list_head *up_list,
1877 struct list_head *down_list)
1879 struct snd_soc_dapm_path *path;
1881 if (w->power == power)
1884 trace_snd_soc_dapm_widget_power(w, power);
1886 /* If we changed our power state perhaps our neigbours changed
1889 snd_soc_dapm_widget_for_each_source_path(w, path)
1890 dapm_widget_set_peer_power(path->source, power, path->connect);
1892 /* Supplies can't affect their outputs, only their inputs */
1893 if (!w->is_supply) {
1894 snd_soc_dapm_widget_for_each_sink_path(w, path)
1895 dapm_widget_set_peer_power(path->sink, power,
1900 dapm_seq_insert(w, up_list, true);
1902 dapm_seq_insert(w, down_list, false);
1905 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1906 struct list_head *up_list,
1907 struct list_head *down_list)
1912 case snd_soc_dapm_pre:
1913 dapm_seq_insert(w, down_list, false);
1915 case snd_soc_dapm_post:
1916 dapm_seq_insert(w, up_list, true);
1920 power = dapm_widget_power_check(w);
1922 dapm_widget_set_power(w, power, up_list, down_list);
1927 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1929 if (dapm->idle_bias_off)
1932 switch (snd_power_get_state(dapm->card->snd_card)) {
1933 case SNDRV_CTL_POWER_D3hot:
1934 case SNDRV_CTL_POWER_D3cold:
1935 return dapm->suspend_bias_off;
1944 * Scan each dapm widget for complete audio path.
1945 * A complete path is a route that has valid endpoints i.e.:-
1947 * o DAC to output pin.
1948 * o Input pin to ADC.
1949 * o Input pin to Output pin (bypass, sidetone)
1950 * o DAC to ADC (loopback).
1952 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1954 struct snd_soc_dapm_widget *w;
1955 struct snd_soc_dapm_context *d;
1957 LIST_HEAD(down_list);
1958 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1959 enum snd_soc_bias_level bias;
1962 lockdep_assert_held(&card->dapm_mutex);
1964 trace_snd_soc_dapm_start(card);
1966 list_for_each_entry(d, &card->dapm_list, list) {
1967 if (dapm_idle_bias_off(d))
1968 d->target_bias_level = SND_SOC_BIAS_OFF;
1970 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1975 /* Check which widgets we need to power and store them in
1976 * lists indicating if they should be powered up or down. We
1977 * only check widgets that have been flagged as dirty but note
1978 * that new widgets may be added to the dirty list while we
1981 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1982 dapm_power_one_widget(w, &up_list, &down_list);
1985 list_for_each_entry(w, &card->widgets, list) {
1987 case snd_soc_dapm_pre:
1988 case snd_soc_dapm_post:
1989 /* These widgets always need to be powered */
1992 list_del_init(&w->dirty);
1999 /* Supplies and micbiases only bring the
2000 * context up to STANDBY as unless something
2001 * else is active and passing audio they
2002 * generally don't require full power. Signal
2003 * generators are virtual pins and have no
2004 * power impact themselves.
2007 case snd_soc_dapm_siggen:
2008 case snd_soc_dapm_vmid:
2010 case snd_soc_dapm_supply:
2011 case snd_soc_dapm_regulator_supply:
2012 case snd_soc_dapm_pinctrl:
2013 case snd_soc_dapm_clock_supply:
2014 case snd_soc_dapm_micbias:
2015 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2016 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2019 d->target_bias_level = SND_SOC_BIAS_ON;
2026 /* Force all contexts in the card to the same bias state if
2027 * they're not ground referenced.
2029 bias = SND_SOC_BIAS_OFF;
2030 list_for_each_entry(d, &card->dapm_list, list)
2031 if (d->target_bias_level > bias)
2032 bias = d->target_bias_level;
2033 list_for_each_entry(d, &card->dapm_list, list)
2034 if (!dapm_idle_bias_off(d))
2035 d->target_bias_level = bias;
2037 trace_snd_soc_dapm_walk_done(card);
2039 /* Run card bias changes at first */
2040 dapm_pre_sequence_async(&card->dapm, 0);
2041 /* Run other bias changes in parallel */
2042 list_for_each_entry(d, &card->dapm_list, list) {
2043 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2044 async_schedule_domain(dapm_pre_sequence_async, d,
2047 async_synchronize_full_domain(&async_domain);
2049 list_for_each_entry(w, &down_list, power_list) {
2050 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2053 list_for_each_entry(w, &up_list, power_list) {
2054 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2057 /* Power down widgets first; try to avoid amplifying pops. */
2058 dapm_seq_run(card, &down_list, event, false);
2060 dapm_widget_update(card);
2063 dapm_seq_run(card, &up_list, event, true);
2065 /* Run all the bias changes in parallel */
2066 list_for_each_entry(d, &card->dapm_list, list) {
2067 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2068 async_schedule_domain(dapm_post_sequence_async, d,
2071 async_synchronize_full_domain(&async_domain);
2072 /* Run card bias changes at last */
2073 dapm_post_sequence_async(&card->dapm, 0);
2075 /* do we need to notify any clients that DAPM event is complete */
2076 list_for_each_entry(d, &card->dapm_list, list) {
2080 ret = snd_soc_component_stream_event(d->component, event);
2085 pop_dbg(card->dev, card->pop_time,
2086 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2087 pop_wait(card->pop_time);
2089 trace_snd_soc_dapm_done(card);
2094 #ifdef CONFIG_DEBUG_FS
2095 static ssize_t dapm_widget_power_read_file(struct file *file,
2096 char __user *user_buf,
2097 size_t count, loff_t *ppos)
2099 struct snd_soc_dapm_widget *w = file->private_data;
2100 struct snd_soc_card *card = w->dapm->card;
2101 enum snd_soc_dapm_direction dir, rdir;
2105 struct snd_soc_dapm_path *p = NULL;
2107 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2111 mutex_lock(&card->dapm_mutex);
2113 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2118 in = is_connected_input_ep(w, NULL, NULL);
2119 out = is_connected_output_ep(w, NULL, NULL);
2122 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2123 w->name, w->power ? "On" : "Off",
2124 w->force ? " (forced)" : "", in, out);
2127 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2128 " - R%d(0x%x) mask 0x%x",
2129 w->reg, w->reg, w->mask << w->shift);
2131 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2134 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2136 w->active ? "active" : "inactive");
2138 snd_soc_dapm_for_each_direction(dir) {
2139 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2140 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2141 if (p->connected && !p->connected(p->source, p->sink))
2147 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2148 " %s \"%s\" \"%s\"\n",
2149 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2150 p->name ? p->name : "static",
2151 p->node[rdir]->name);
2155 mutex_unlock(&card->dapm_mutex);
2157 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2163 static const struct file_operations dapm_widget_power_fops = {
2164 .open = simple_open,
2165 .read = dapm_widget_power_read_file,
2166 .llseek = default_llseek,
2169 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2170 size_t count, loff_t *ppos)
2172 struct snd_soc_dapm_context *dapm = file->private_data;
2175 switch (dapm->bias_level) {
2176 case SND_SOC_BIAS_ON:
2179 case SND_SOC_BIAS_PREPARE:
2180 level = "Prepare\n";
2182 case SND_SOC_BIAS_STANDBY:
2183 level = "Standby\n";
2185 case SND_SOC_BIAS_OFF:
2189 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2190 level = "Unknown\n";
2194 return simple_read_from_buffer(user_buf, count, ppos, level,
2198 static const struct file_operations dapm_bias_fops = {
2199 .open = simple_open,
2200 .read = dapm_bias_read_file,
2201 .llseek = default_llseek,
2204 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2205 struct dentry *parent)
2207 if (!parent || IS_ERR(parent))
2210 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2212 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2216 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2218 struct snd_soc_dapm_context *dapm = w->dapm;
2220 if (!dapm->debugfs_dapm || !w->name)
2223 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2224 &dapm_widget_power_fops);
2227 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2229 debugfs_remove_recursive(dapm->debugfs_dapm);
2230 dapm->debugfs_dapm = NULL;
2234 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2235 struct dentry *parent)
2239 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2243 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2250 * soc_dapm_connect_path() - Connects or disconnects a path
2251 * @path: The path to update
2252 * @connect: The new connect state of the path. True if the path is connected,
2253 * false if it is disconnected.
2254 * @reason: The reason why the path changed (for debugging only)
2256 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2257 bool connect, const char *reason)
2259 if (path->connect == connect)
2262 path->connect = connect;
2263 dapm_mark_dirty(path->source, reason);
2264 dapm_mark_dirty(path->sink, reason);
2265 dapm_path_invalidate(path);
2268 /* test and update the power status of a mux widget */
2269 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2270 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2272 struct snd_soc_dapm_path *path;
2276 lockdep_assert_held(&card->dapm_mutex);
2278 /* find dapm widget path assoc with kcontrol */
2279 dapm_kcontrol_for_each_path(path, kcontrol) {
2281 /* we now need to match the string in the enum to the path */
2282 if (e && !(strcmp(path->name, e->texts[mux])))
2287 soc_dapm_connect_path(path, connect, "mux update");
2291 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2296 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2297 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2298 struct snd_soc_dapm_update *update)
2300 struct snd_soc_card *card = dapm->card;
2303 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2304 card->update = update;
2305 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2306 card->update = NULL;
2307 mutex_unlock(&card->dapm_mutex);
2309 soc_dpcm_runtime_update(card);
2312 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2314 /* test and update the power status of a mixer or switch widget */
2315 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2316 struct snd_kcontrol *kcontrol,
2317 int connect, int rconnect)
2319 struct snd_soc_dapm_path *path;
2322 lockdep_assert_held(&card->dapm_mutex);
2324 /* find dapm widget path assoc with kcontrol */
2325 dapm_kcontrol_for_each_path(path, kcontrol) {
2327 * Ideally this function should support any number of
2328 * paths and channels. But since kcontrols only come
2329 * in mono and stereo variants, we are limited to 2
2332 * The following code assumes for stereo controls the
2333 * first path (when 'found == 0') is the left channel,
2334 * and all remaining paths (when 'found == 1') are the
2337 * A stereo control is signified by a valid 'rconnect'
2338 * value, either 0 for unconnected, or >= 0 for connected.
2339 * This is chosen instead of using snd_soc_volsw_is_stereo,
2340 * so that the behavior of snd_soc_dapm_mixer_update_power
2341 * doesn't change even when the kcontrol passed in is
2344 * It passes 'connect' as the path connect status for
2345 * the left channel, and 'rconnect' for the right
2348 if (found && rconnect >= 0)
2349 soc_dapm_connect_path(path, rconnect, "mixer update");
2351 soc_dapm_connect_path(path, connect, "mixer update");
2356 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2361 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2362 struct snd_kcontrol *kcontrol, int connect,
2363 struct snd_soc_dapm_update *update)
2365 struct snd_soc_card *card = dapm->card;
2368 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2369 card->update = update;
2370 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2371 card->update = NULL;
2372 mutex_unlock(&card->dapm_mutex);
2374 soc_dpcm_runtime_update(card);
2377 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2379 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2382 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2383 struct snd_soc_dapm_widget *w;
2385 char *state = "not set";
2387 /* card won't be set for the dummy component, as a spot fix
2388 * we're checking for that case specifically here but in future
2389 * we will ensure that the dummy component looks like others.
2394 list_for_each_entry(w, &cmpnt->card->widgets, list) {
2395 if (w->dapm != dapm)
2398 /* only display widgets that burn power */
2400 case snd_soc_dapm_hp:
2401 case snd_soc_dapm_mic:
2402 case snd_soc_dapm_spk:
2403 case snd_soc_dapm_line:
2404 case snd_soc_dapm_micbias:
2405 case snd_soc_dapm_dac:
2406 case snd_soc_dapm_adc:
2407 case snd_soc_dapm_pga:
2408 case snd_soc_dapm_effect:
2409 case snd_soc_dapm_out_drv:
2410 case snd_soc_dapm_mixer:
2411 case snd_soc_dapm_mixer_named_ctl:
2412 case snd_soc_dapm_supply:
2413 case snd_soc_dapm_regulator_supply:
2414 case snd_soc_dapm_pinctrl:
2415 case snd_soc_dapm_clock_supply:
2417 count += sprintf(buf + count, "%s: %s\n",
2418 w->name, w->power ? "On":"Off");
2425 switch (snd_soc_dapm_get_bias_level(dapm)) {
2426 case SND_SOC_BIAS_ON:
2429 case SND_SOC_BIAS_PREPARE:
2432 case SND_SOC_BIAS_STANDBY:
2435 case SND_SOC_BIAS_OFF:
2439 count += sprintf(buf + count, "PM State: %s\n", state);
2444 /* show dapm widget status in sys fs */
2445 static ssize_t dapm_widget_show(struct device *dev,
2446 struct device_attribute *attr, char *buf)
2448 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2449 struct snd_soc_dai *codec_dai;
2452 mutex_lock(&rtd->card->dapm_mutex);
2454 for_each_rtd_codec_dai(rtd, i, codec_dai) {
2455 struct snd_soc_component *cmpnt = codec_dai->component;
2457 count += dapm_widget_show_component(cmpnt, buf + count);
2460 mutex_unlock(&rtd->card->dapm_mutex);
2465 static DEVICE_ATTR_RO(dapm_widget);
2467 struct attribute *soc_dapm_dev_attrs[] = {
2468 &dev_attr_dapm_widget.attr,
2472 static void dapm_free_path(struct snd_soc_dapm_path *path)
2474 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2475 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2476 list_del(&path->list_kcontrol);
2477 list_del(&path->list);
2481 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2483 struct snd_soc_dapm_path *p, *next_p;
2484 enum snd_soc_dapm_direction dir;
2488 * remove source and sink paths associated to this widget.
2489 * While removing the path, remove reference to it from both
2490 * source and sink widgets so that path is removed only once.
2492 snd_soc_dapm_for_each_direction(dir) {
2493 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2497 kfree(w->kcontrols);
2498 kfree_const(w->name);
2499 kfree_const(w->sname);
2503 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2505 dapm->path_sink_cache.widget = NULL;
2506 dapm->path_source_cache.widget = NULL;
2509 /* free all dapm widgets and resources */
2510 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2512 struct snd_soc_dapm_widget *w, *next_w;
2514 list_for_each_entry_safe(w, next_w, &dapm->card->widgets, list) {
2515 if (w->dapm != dapm)
2517 snd_soc_dapm_free_widget(w);
2519 snd_soc_dapm_reset_cache(dapm);
2522 static struct snd_soc_dapm_widget *dapm_find_widget(
2523 struct snd_soc_dapm_context *dapm, const char *pin,
2524 bool search_other_contexts)
2526 struct snd_soc_dapm_widget *w;
2527 struct snd_soc_dapm_widget *fallback = NULL;
2529 list_for_each_entry(w, &dapm->card->widgets, list) {
2530 if (!strcmp(w->name, pin)) {
2531 if (w->dapm == dapm)
2538 if (search_other_contexts)
2544 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2545 const char *pin, int status)
2547 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2549 dapm_assert_locked(dapm);
2552 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2556 if (w->connected != status) {
2557 dapm_mark_dirty(w, "pin configuration");
2558 dapm_widget_invalidate_input_paths(w);
2559 dapm_widget_invalidate_output_paths(w);
2562 w->connected = status;
2570 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2571 * @dapm: DAPM context
2573 * Walks all dapm audio paths and powers widgets according to their
2574 * stream or path usage.
2576 * Requires external locking.
2578 * Returns 0 for success.
2580 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2583 * Suppress early reports (eg, jacks syncing their state) to avoid
2584 * silly DAPM runs during card startup.
2586 if (!dapm->card || !dapm->card->instantiated)
2589 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2591 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2594 * snd_soc_dapm_sync - scan and power dapm paths
2595 * @dapm: DAPM context
2597 * Walks all dapm audio paths and powers widgets according to their
2598 * stream or path usage.
2600 * Returns 0 for success.
2602 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2606 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2607 ret = snd_soc_dapm_sync_unlocked(dapm);
2608 mutex_unlock(&dapm->card->dapm_mutex);
2611 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2613 static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2614 struct snd_soc_dapm_widget *w,
2618 case snd_soc_dapm_aif_out:
2619 case snd_soc_dapm_aif_in:
2625 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2626 w->channel < channels ? "Connecting" : "Disconnecting",
2627 p->source->name, p->sink->name);
2629 if (w->channel < channels)
2630 soc_dapm_connect_path(p, true, "dai update");
2632 soc_dapm_connect_path(p, false, "dai update");
2637 static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2638 struct snd_pcm_hw_params *params,
2639 struct snd_soc_dai *dai)
2641 int dir = substream->stream;
2642 int channels = params_channels(params);
2643 struct snd_soc_dapm_path *p;
2644 struct snd_soc_dapm_widget *w;
2647 if (dir == SNDRV_PCM_STREAM_PLAYBACK)
2648 w = dai->playback_widget;
2650 w = dai->capture_widget;
2655 dev_dbg(dai->dev, "Update DAI routes for %s %s\n", dai->name,
2656 dir == SNDRV_PCM_STREAM_PLAYBACK ? "playback" : "capture");
2658 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2659 ret = dapm_update_dai_chan(p, p->sink, channels);
2664 snd_soc_dapm_widget_for_each_source_path(w, p) {
2665 ret = dapm_update_dai_chan(p, p->source, channels);
2673 int snd_soc_dapm_update_dai(struct snd_pcm_substream *substream,
2674 struct snd_pcm_hw_params *params,
2675 struct snd_soc_dai *dai)
2677 struct snd_soc_pcm_runtime *rtd = substream->private_data;
2680 mutex_lock_nested(&rtd->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2681 ret = dapm_update_dai_unlocked(substream, params, dai);
2682 mutex_unlock(&rtd->card->dapm_mutex);
2686 EXPORT_SYMBOL_GPL(snd_soc_dapm_update_dai);
2689 * dapm_update_widget_flags() - Re-compute widget sink and source flags
2690 * @w: The widget for which to update the flags
2692 * Some widgets have a dynamic category which depends on which neighbors they
2693 * are connected to. This function update the category for these widgets.
2695 * This function must be called whenever a path is added or removed to a widget.
2697 static void dapm_update_widget_flags(struct snd_soc_dapm_widget *w)
2699 enum snd_soc_dapm_direction dir;
2700 struct snd_soc_dapm_path *p;
2704 case snd_soc_dapm_input:
2705 /* On a fully routed card an input is never a source */
2706 if (w->dapm->card->fully_routed)
2708 ep = SND_SOC_DAPM_EP_SOURCE;
2709 snd_soc_dapm_widget_for_each_source_path(w, p) {
2710 if (p->source->id == snd_soc_dapm_micbias ||
2711 p->source->id == snd_soc_dapm_mic ||
2712 p->source->id == snd_soc_dapm_line ||
2713 p->source->id == snd_soc_dapm_output) {
2719 case snd_soc_dapm_output:
2720 /* On a fully routed card a output is never a sink */
2721 if (w->dapm->card->fully_routed)
2723 ep = SND_SOC_DAPM_EP_SINK;
2724 snd_soc_dapm_widget_for_each_sink_path(w, p) {
2725 if (p->sink->id == snd_soc_dapm_spk ||
2726 p->sink->id == snd_soc_dapm_hp ||
2727 p->sink->id == snd_soc_dapm_line ||
2728 p->sink->id == snd_soc_dapm_input) {
2734 case snd_soc_dapm_line:
2736 snd_soc_dapm_for_each_direction(dir) {
2737 if (!list_empty(&w->edges[dir]))
2738 ep |= SND_SOC_DAPM_DIR_TO_EP(dir);
2748 static int snd_soc_dapm_check_dynamic_path(struct snd_soc_dapm_context *dapm,
2749 struct snd_soc_dapm_widget *source, struct snd_soc_dapm_widget *sink,
2750 const char *control)
2752 bool dynamic_source = false;
2753 bool dynamic_sink = false;
2758 switch (source->id) {
2759 case snd_soc_dapm_demux:
2760 dynamic_source = true;
2767 case snd_soc_dapm_mux:
2768 case snd_soc_dapm_switch:
2769 case snd_soc_dapm_mixer:
2770 case snd_soc_dapm_mixer_named_ctl:
2771 dynamic_sink = true;
2777 if (dynamic_source && dynamic_sink) {
2779 "Direct connection between demux and mixer/mux not supported for path %s -> [%s] -> %s\n",
2780 source->name, control, sink->name);
2782 } else if (!dynamic_source && !dynamic_sink) {
2784 "Control not supported for path %s -> [%s] -> %s\n",
2785 source->name, control, sink->name);
2792 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
2793 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
2794 const char *control,
2795 int (*connected)(struct snd_soc_dapm_widget *source,
2796 struct snd_soc_dapm_widget *sink))
2798 struct snd_soc_dapm_widget *widgets[2];
2799 enum snd_soc_dapm_direction dir;
2800 struct snd_soc_dapm_path *path;
2803 if (wsink->is_supply && !wsource->is_supply) {
2805 "Connecting non-supply widget to supply widget is not supported (%s -> %s)\n",
2806 wsource->name, wsink->name);
2810 if (connected && !wsource->is_supply) {
2812 "connected() callback only supported for supply widgets (%s -> %s)\n",
2813 wsource->name, wsink->name);
2817 if (wsource->is_supply && control) {
2819 "Conditional paths are not supported for supply widgets (%s -> [%s] -> %s)\n",
2820 wsource->name, control, wsink->name);
2824 ret = snd_soc_dapm_check_dynamic_path(dapm, wsource, wsink, control);
2828 path = kzalloc(sizeof(struct snd_soc_dapm_path), GFP_KERNEL);
2832 path->node[SND_SOC_DAPM_DIR_IN] = wsource;
2833 path->node[SND_SOC_DAPM_DIR_OUT] = wsink;
2834 widgets[SND_SOC_DAPM_DIR_IN] = wsource;
2835 widgets[SND_SOC_DAPM_DIR_OUT] = wsink;
2837 path->connected = connected;
2838 INIT_LIST_HEAD(&path->list);
2839 INIT_LIST_HEAD(&path->list_kcontrol);
2841 if (wsource->is_supply || wsink->is_supply)
2842 path->is_supply = 1;
2844 /* connect static paths */
2845 if (control == NULL) {
2848 switch (wsource->id) {
2849 case snd_soc_dapm_demux:
2850 ret = dapm_connect_mux(dapm, path, control, wsource);
2858 switch (wsink->id) {
2859 case snd_soc_dapm_mux:
2860 ret = dapm_connect_mux(dapm, path, control, wsink);
2864 case snd_soc_dapm_switch:
2865 case snd_soc_dapm_mixer:
2866 case snd_soc_dapm_mixer_named_ctl:
2867 ret = dapm_connect_mixer(dapm, path, control);
2876 list_add(&path->list, &dapm->card->paths);
2877 snd_soc_dapm_for_each_direction(dir)
2878 list_add(&path->list_node[dir], &widgets[dir]->edges[dir]);
2880 snd_soc_dapm_for_each_direction(dir) {
2881 dapm_update_widget_flags(widgets[dir]);
2882 dapm_mark_dirty(widgets[dir], "Route added");
2885 if (dapm->card->instantiated && path->connect)
2886 dapm_path_invalidate(path);
2894 static int snd_soc_dapm_add_route(struct snd_soc_dapm_context *dapm,
2895 const struct snd_soc_dapm_route *route)
2897 struct snd_soc_dapm_widget *wsource = NULL, *wsink = NULL, *w;
2898 struct snd_soc_dapm_widget *wtsource = NULL, *wtsink = NULL;
2901 char prefixed_sink[80];
2902 char prefixed_source[80];
2904 unsigned int sink_ref = 0;
2905 unsigned int source_ref = 0;
2908 prefix = soc_dapm_prefix(dapm);
2910 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
2911 prefix, route->sink);
2912 sink = prefixed_sink;
2913 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
2914 prefix, route->source);
2915 source = prefixed_source;
2918 source = route->source;
2921 wsource = dapm_wcache_lookup(&dapm->path_source_cache, source);
2922 wsink = dapm_wcache_lookup(&dapm->path_sink_cache, sink);
2924 if (wsink && wsource)
2928 * find src and dest widgets over all widgets but favor a widget from
2929 * current DAPM context
2931 list_for_each_entry(w, &dapm->card->widgets, list) {
2932 if (!wsink && !(strcmp(w->name, sink))) {
2934 if (w->dapm == dapm) {
2942 "ASoC: sink widget %s overwritten\n",
2946 if (!wsource && !(strcmp(w->name, source))) {
2948 if (w->dapm == dapm) {
2956 "ASoC: source widget %s overwritten\n",
2960 /* use widget from another DAPM context if not found from this */
2966 if (wsource == NULL) {
2967 dev_err(dapm->dev, "ASoC: no source widget found for %s\n",
2971 if (wsink == NULL) {
2972 dev_err(dapm->dev, "ASoC: no sink widget found for %s\n",
2978 dapm_wcache_update(&dapm->path_sink_cache, wsink);
2979 dapm_wcache_update(&dapm->path_source_cache, wsource);
2981 ret = snd_soc_dapm_add_path(dapm, wsource, wsink, route->control,
2988 dev_warn(dapm->dev, "ASoC: no dapm match for %s --> %s --> %s\n",
2989 source, route->control, sink);
2993 static int snd_soc_dapm_del_route(struct snd_soc_dapm_context *dapm,
2994 const struct snd_soc_dapm_route *route)
2996 struct snd_soc_dapm_widget *wsource, *wsink;
2997 struct snd_soc_dapm_path *path, *p;
3000 char prefixed_sink[80];
3001 char prefixed_source[80];
3004 if (route->control) {
3006 "ASoC: Removal of routes with controls not supported\n");
3010 prefix = soc_dapm_prefix(dapm);
3012 snprintf(prefixed_sink, sizeof(prefixed_sink), "%s %s",
3013 prefix, route->sink);
3014 sink = prefixed_sink;
3015 snprintf(prefixed_source, sizeof(prefixed_source), "%s %s",
3016 prefix, route->source);
3017 source = prefixed_source;
3020 source = route->source;
3024 list_for_each_entry(p, &dapm->card->paths, list) {
3025 if (strcmp(p->source->name, source) != 0)
3027 if (strcmp(p->sink->name, sink) != 0)
3034 wsource = path->source;
3037 dapm_mark_dirty(wsource, "Route removed");
3038 dapm_mark_dirty(wsink, "Route removed");
3040 dapm_path_invalidate(path);
3042 dapm_free_path(path);
3044 /* Update any path related flags */
3045 dapm_update_widget_flags(wsource);
3046 dapm_update_widget_flags(wsink);
3048 dev_warn(dapm->dev, "ASoC: Route %s->%s does not exist\n",
3056 * snd_soc_dapm_add_routes - Add routes between DAPM widgets
3057 * @dapm: DAPM context
3058 * @route: audio routes
3059 * @num: number of routes
3061 * Connects 2 dapm widgets together via a named audio path. The sink is
3062 * the widget receiving the audio signal, whilst the source is the sender
3063 * of the audio signal.
3065 * Returns 0 for success else error. On error all resources can be freed
3066 * with a call to snd_soc_card_free().
3068 int snd_soc_dapm_add_routes(struct snd_soc_dapm_context *dapm,
3069 const struct snd_soc_dapm_route *route, int num)
3073 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3074 for (i = 0; i < num; i++) {
3075 r = snd_soc_dapm_add_route(dapm, route);
3077 dev_err(dapm->dev, "ASoC: Failed to add route %s -> %s -> %s\n",
3079 route->control ? route->control : "direct",
3085 mutex_unlock(&dapm->card->dapm_mutex);
3089 EXPORT_SYMBOL_GPL(snd_soc_dapm_add_routes);
3092 * snd_soc_dapm_del_routes - Remove routes between DAPM widgets
3093 * @dapm: DAPM context
3094 * @route: audio routes
3095 * @num: number of routes
3097 * Removes routes from the DAPM context.
3099 int snd_soc_dapm_del_routes(struct snd_soc_dapm_context *dapm,
3100 const struct snd_soc_dapm_route *route, int num)
3104 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3105 for (i = 0; i < num; i++) {
3106 snd_soc_dapm_del_route(dapm, route);
3109 mutex_unlock(&dapm->card->dapm_mutex);
3113 EXPORT_SYMBOL_GPL(snd_soc_dapm_del_routes);
3115 static int snd_soc_dapm_weak_route(struct snd_soc_dapm_context *dapm,
3116 const struct snd_soc_dapm_route *route)
3118 struct snd_soc_dapm_widget *source = dapm_find_widget(dapm,
3121 struct snd_soc_dapm_widget *sink = dapm_find_widget(dapm,
3124 struct snd_soc_dapm_path *path;
3128 dev_err(dapm->dev, "ASoC: Unable to find source %s for weak route\n",
3134 dev_err(dapm->dev, "ASoC: Unable to find sink %s for weak route\n",
3139 if (route->control || route->connected)
3140 dev_warn(dapm->dev, "ASoC: Ignoring control for weak route %s->%s\n",
3141 route->source, route->sink);
3143 snd_soc_dapm_widget_for_each_sink_path(source, path) {
3144 if (path->sink == sink) {
3151 dev_err(dapm->dev, "ASoC: No path found for weak route %s->%s\n",
3152 route->source, route->sink);
3154 dev_warn(dapm->dev, "ASoC: %d paths found for weak route %s->%s\n",
3155 count, route->source, route->sink);
3161 * snd_soc_dapm_weak_routes - Mark routes between DAPM widgets as weak
3162 * @dapm: DAPM context
3163 * @route: audio routes
3164 * @num: number of routes
3166 * Mark existing routes matching those specified in the passed array
3167 * as being weak, meaning that they are ignored for the purpose of
3168 * power decisions. The main intended use case is for sidetone paths
3169 * which couple audio between other independent paths if they are both
3170 * active in order to make the combination work better at the user
3171 * level but which aren't intended to be "used".
3173 * Note that CODEC drivers should not use this as sidetone type paths
3174 * can frequently also be used as bypass paths.
3176 int snd_soc_dapm_weak_routes(struct snd_soc_dapm_context *dapm,
3177 const struct snd_soc_dapm_route *route, int num)
3182 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3183 for (i = 0; i < num; i++) {
3184 err = snd_soc_dapm_weak_route(dapm, route);
3189 mutex_unlock(&dapm->card->dapm_mutex);
3193 EXPORT_SYMBOL_GPL(snd_soc_dapm_weak_routes);
3196 * snd_soc_dapm_new_widgets - add new dapm widgets
3197 * @card: card to be checked for new dapm widgets
3199 * Checks the codec for any new dapm widgets and creates them if found.
3201 * Returns 0 for success.
3203 int snd_soc_dapm_new_widgets(struct snd_soc_card *card)
3205 struct snd_soc_dapm_widget *w;
3208 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3210 list_for_each_entry(w, &card->widgets, list)
3215 if (w->num_kcontrols) {
3216 w->kcontrols = kcalloc(w->num_kcontrols,
3217 sizeof(struct snd_kcontrol *),
3219 if (!w->kcontrols) {
3220 mutex_unlock(&card->dapm_mutex);
3226 case snd_soc_dapm_switch:
3227 case snd_soc_dapm_mixer:
3228 case snd_soc_dapm_mixer_named_ctl:
3231 case snd_soc_dapm_mux:
3232 case snd_soc_dapm_demux:
3235 case snd_soc_dapm_pga:
3236 case snd_soc_dapm_effect:
3237 case snd_soc_dapm_out_drv:
3240 case snd_soc_dapm_dai_link:
3241 dapm_new_dai_link(w);
3247 /* Read the initial power state from the device */
3249 soc_dapm_read(w->dapm, w->reg, &val);
3250 val = val >> w->shift;
3252 if (val == w->on_val)
3258 dapm_mark_dirty(w, "new widget");
3259 dapm_debugfs_add_widget(w);
3262 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
3263 mutex_unlock(&card->dapm_mutex);
3266 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_widgets);
3269 * snd_soc_dapm_get_volsw - dapm mixer get callback
3270 * @kcontrol: mixer control
3271 * @ucontrol: control element information
3273 * Callback to get the value of a dapm mixer control.
3275 * Returns 0 for success.
3277 int snd_soc_dapm_get_volsw(struct snd_kcontrol *kcontrol,
3278 struct snd_ctl_elem_value *ucontrol)
3280 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3281 struct snd_soc_card *card = dapm->card;
3282 struct soc_mixer_control *mc =
3283 (struct soc_mixer_control *)kcontrol->private_value;
3285 unsigned int shift = mc->shift;
3287 unsigned int width = fls(max);
3288 unsigned int mask = (1 << fls(max)) - 1;
3289 unsigned int invert = mc->invert;
3290 unsigned int reg_val, val, rval = 0;
3293 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3294 if (dapm_kcontrol_is_powered(kcontrol) && reg != SND_SOC_NOPM) {
3295 ret = soc_dapm_read(dapm, reg, ®_val);
3296 val = (reg_val >> shift) & mask;
3298 if (ret == 0 && reg != mc->rreg)
3299 ret = soc_dapm_read(dapm, mc->rreg, ®_val);
3301 if (snd_soc_volsw_is_stereo(mc))
3302 rval = (reg_val >> mc->rshift) & mask;
3304 reg_val = dapm_kcontrol_get_value(kcontrol);
3305 val = reg_val & mask;
3307 if (snd_soc_volsw_is_stereo(mc))
3308 rval = (reg_val >> width) & mask;
3310 mutex_unlock(&card->dapm_mutex);
3316 ucontrol->value.integer.value[0] = max - val;
3318 ucontrol->value.integer.value[0] = val;
3320 if (snd_soc_volsw_is_stereo(mc)) {
3322 ucontrol->value.integer.value[1] = max - rval;
3324 ucontrol->value.integer.value[1] = rval;
3329 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_volsw);
3332 * snd_soc_dapm_put_volsw - dapm mixer set callback
3333 * @kcontrol: mixer control
3334 * @ucontrol: control element information
3336 * Callback to set the value of a dapm mixer control.
3338 * Returns 0 for success.
3340 int snd_soc_dapm_put_volsw(struct snd_kcontrol *kcontrol,
3341 struct snd_ctl_elem_value *ucontrol)
3343 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3344 struct snd_soc_card *card = dapm->card;
3345 struct soc_mixer_control *mc =
3346 (struct soc_mixer_control *)kcontrol->private_value;
3348 unsigned int shift = mc->shift;
3350 unsigned int width = fls(max);
3351 unsigned int mask = (1 << width) - 1;
3352 unsigned int invert = mc->invert;
3353 unsigned int val, rval = 0;
3354 int connect, rconnect = -1, change, reg_change = 0;
3355 struct snd_soc_dapm_update update = {};
3358 val = (ucontrol->value.integer.value[0] & mask);
3364 if (snd_soc_volsw_is_stereo(mc)) {
3365 rval = (ucontrol->value.integer.value[1] & mask);
3371 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3373 /* This assumes field width < (bits in unsigned int / 2) */
3374 if (width > sizeof(unsigned int) * 8 / 2)
3376 "ASoC: control %s field width limit exceeded\n",
3378 change = dapm_kcontrol_set_value(kcontrol, val | (rval << width));
3380 if (reg != SND_SOC_NOPM) {
3382 rval = rval << mc->rshift;
3384 reg_change = soc_dapm_test_bits(dapm, reg, mask << shift, val);
3386 if (snd_soc_volsw_is_stereo(mc))
3387 reg_change |= soc_dapm_test_bits(dapm, mc->rreg,
3392 if (change || reg_change) {
3394 if (snd_soc_volsw_is_stereo(mc)) {
3395 update.has_second_set = true;
3396 update.reg2 = mc->rreg;
3397 update.mask2 = mask << mc->rshift;
3400 update.kcontrol = kcontrol;
3402 update.mask = mask << shift;
3404 card->update = &update;
3406 change |= reg_change;
3408 ret = soc_dapm_mixer_update_power(card, kcontrol, connect,
3411 card->update = NULL;
3414 mutex_unlock(&card->dapm_mutex);
3417 soc_dpcm_runtime_update(card);
3421 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_volsw);
3424 * snd_soc_dapm_get_enum_double - dapm enumerated double mixer get callback
3425 * @kcontrol: mixer control
3426 * @ucontrol: control element information
3428 * Callback to get the value of a dapm enumerated double mixer control.
3430 * Returns 0 for success.
3432 int snd_soc_dapm_get_enum_double(struct snd_kcontrol *kcontrol,
3433 struct snd_ctl_elem_value *ucontrol)
3435 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3436 struct snd_soc_card *card = dapm->card;
3437 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3438 unsigned int reg_val, val;
3440 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3441 if (e->reg != SND_SOC_NOPM && dapm_kcontrol_is_powered(kcontrol)) {
3442 int ret = soc_dapm_read(dapm, e->reg, ®_val);
3444 mutex_unlock(&card->dapm_mutex);
3448 reg_val = dapm_kcontrol_get_value(kcontrol);
3450 mutex_unlock(&card->dapm_mutex);
3452 val = (reg_val >> e->shift_l) & e->mask;
3453 ucontrol->value.enumerated.item[0] = snd_soc_enum_val_to_item(e, val);
3454 if (e->shift_l != e->shift_r) {
3455 val = (reg_val >> e->shift_r) & e->mask;
3456 val = snd_soc_enum_val_to_item(e, val);
3457 ucontrol->value.enumerated.item[1] = val;
3462 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_enum_double);
3465 * snd_soc_dapm_put_enum_double - dapm enumerated double mixer set callback
3466 * @kcontrol: mixer control
3467 * @ucontrol: control element information
3469 * Callback to set the value of a dapm enumerated double mixer control.
3471 * Returns 0 for success.
3473 int snd_soc_dapm_put_enum_double(struct snd_kcontrol *kcontrol,
3474 struct snd_ctl_elem_value *ucontrol)
3476 struct snd_soc_dapm_context *dapm = snd_soc_dapm_kcontrol_dapm(kcontrol);
3477 struct snd_soc_card *card = dapm->card;
3478 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
3479 unsigned int *item = ucontrol->value.enumerated.item;
3480 unsigned int val, change, reg_change = 0;
3482 struct snd_soc_dapm_update update = {};
3485 if (item[0] >= e->items)
3488 val = snd_soc_enum_item_to_val(e, item[0]) << e->shift_l;
3489 mask = e->mask << e->shift_l;
3490 if (e->shift_l != e->shift_r) {
3491 if (item[1] > e->items)
3493 val |= snd_soc_enum_item_to_val(e, item[1]) << e->shift_r;
3494 mask |= e->mask << e->shift_r;
3497 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3499 change = dapm_kcontrol_set_value(kcontrol, val);
3501 if (e->reg != SND_SOC_NOPM)
3502 reg_change = soc_dapm_test_bits(dapm, e->reg, mask, val);
3504 if (change || reg_change) {
3506 update.kcontrol = kcontrol;
3507 update.reg = e->reg;
3510 card->update = &update;
3512 change |= reg_change;
3514 ret = soc_dapm_mux_update_power(card, kcontrol, item[0], e);
3516 card->update = NULL;
3519 mutex_unlock(&card->dapm_mutex);
3522 soc_dpcm_runtime_update(card);
3526 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_enum_double);
3529 * snd_soc_dapm_info_pin_switch - Info for a pin switch
3531 * @kcontrol: mixer control
3532 * @uinfo: control element information
3534 * Callback to provide information about a pin switch control.
3536 int snd_soc_dapm_info_pin_switch(struct snd_kcontrol *kcontrol,
3537 struct snd_ctl_elem_info *uinfo)
3539 uinfo->type = SNDRV_CTL_ELEM_TYPE_BOOLEAN;
3541 uinfo->value.integer.min = 0;
3542 uinfo->value.integer.max = 1;
3546 EXPORT_SYMBOL_GPL(snd_soc_dapm_info_pin_switch);
3549 * snd_soc_dapm_get_pin_switch - Get information for a pin switch
3551 * @kcontrol: mixer control
3554 int snd_soc_dapm_get_pin_switch(struct snd_kcontrol *kcontrol,
3555 struct snd_ctl_elem_value *ucontrol)
3557 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3558 const char *pin = (const char *)kcontrol->private_value;
3560 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3562 ucontrol->value.integer.value[0] =
3563 snd_soc_dapm_get_pin_status(&card->dapm, pin);
3565 mutex_unlock(&card->dapm_mutex);
3569 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_switch);
3572 * snd_soc_dapm_put_pin_switch - Set information for a pin switch
3574 * @kcontrol: mixer control
3577 int snd_soc_dapm_put_pin_switch(struct snd_kcontrol *kcontrol,
3578 struct snd_ctl_elem_value *ucontrol)
3580 struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);
3581 const char *pin = (const char *)kcontrol->private_value;
3583 if (ucontrol->value.integer.value[0])
3584 snd_soc_dapm_enable_pin(&card->dapm, pin);
3586 snd_soc_dapm_disable_pin(&card->dapm, pin);
3588 snd_soc_dapm_sync(&card->dapm);
3591 EXPORT_SYMBOL_GPL(snd_soc_dapm_put_pin_switch);
3593 struct snd_soc_dapm_widget *
3594 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
3595 const struct snd_soc_dapm_widget *widget)
3597 enum snd_soc_dapm_direction dir;
3598 struct snd_soc_dapm_widget *w;
3602 if ((w = dapm_cnew_widget(widget)) == NULL)
3603 return ERR_PTR(-ENOMEM);
3606 case snd_soc_dapm_regulator_supply:
3607 w->regulator = devm_regulator_get(dapm->dev, w->name);
3608 if (IS_ERR(w->regulator)) {
3609 ret = PTR_ERR(w->regulator);
3610 goto request_failed;
3613 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
3614 ret = regulator_allow_bypass(w->regulator, true);
3617 "ASoC: Failed to bypass %s: %d\n",
3621 case snd_soc_dapm_pinctrl:
3622 w->pinctrl = devm_pinctrl_get(dapm->dev);
3623 if (IS_ERR(w->pinctrl)) {
3624 ret = PTR_ERR(w->pinctrl);
3625 goto request_failed;
3628 case snd_soc_dapm_clock_supply:
3629 w->clk = devm_clk_get(dapm->dev, w->name);
3630 if (IS_ERR(w->clk)) {
3631 ret = PTR_ERR(w->clk);
3632 goto request_failed;
3639 prefix = soc_dapm_prefix(dapm);
3641 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3643 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3644 if (w->name == NULL) {
3645 kfree_const(w->sname);
3647 return ERR_PTR(-ENOMEM);
3651 case snd_soc_dapm_mic:
3652 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3653 w->power_check = dapm_generic_check_power;
3655 case snd_soc_dapm_input:
3656 if (!dapm->card->fully_routed)
3657 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3658 w->power_check = dapm_generic_check_power;
3660 case snd_soc_dapm_spk:
3661 case snd_soc_dapm_hp:
3662 w->is_ep = SND_SOC_DAPM_EP_SINK;
3663 w->power_check = dapm_generic_check_power;
3665 case snd_soc_dapm_output:
3666 if (!dapm->card->fully_routed)
3667 w->is_ep = SND_SOC_DAPM_EP_SINK;
3668 w->power_check = dapm_generic_check_power;
3670 case snd_soc_dapm_vmid:
3671 case snd_soc_dapm_siggen:
3672 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3673 w->power_check = dapm_always_on_check_power;
3675 case snd_soc_dapm_sink:
3676 w->is_ep = SND_SOC_DAPM_EP_SINK;
3677 w->power_check = dapm_always_on_check_power;
3680 case snd_soc_dapm_mux:
3681 case snd_soc_dapm_demux:
3682 case snd_soc_dapm_switch:
3683 case snd_soc_dapm_mixer:
3684 case snd_soc_dapm_mixer_named_ctl:
3685 case snd_soc_dapm_adc:
3686 case snd_soc_dapm_aif_out:
3687 case snd_soc_dapm_dac:
3688 case snd_soc_dapm_aif_in:
3689 case snd_soc_dapm_pga:
3690 case snd_soc_dapm_buffer:
3691 case snd_soc_dapm_scheduler:
3692 case snd_soc_dapm_effect:
3693 case snd_soc_dapm_src:
3694 case snd_soc_dapm_asrc:
3695 case snd_soc_dapm_encoder:
3696 case snd_soc_dapm_decoder:
3697 case snd_soc_dapm_out_drv:
3698 case snd_soc_dapm_micbias:
3699 case snd_soc_dapm_line:
3700 case snd_soc_dapm_dai_link:
3701 case snd_soc_dapm_dai_out:
3702 case snd_soc_dapm_dai_in:
3703 w->power_check = dapm_generic_check_power;
3705 case snd_soc_dapm_supply:
3706 case snd_soc_dapm_regulator_supply:
3707 case snd_soc_dapm_pinctrl:
3708 case snd_soc_dapm_clock_supply:
3709 case snd_soc_dapm_kcontrol:
3711 w->power_check = dapm_supply_check_power;
3714 w->power_check = dapm_always_on_check_power;
3719 INIT_LIST_HEAD(&w->list);
3720 INIT_LIST_HEAD(&w->dirty);
3721 list_add_tail(&w->list, &dapm->card->widgets);
3723 snd_soc_dapm_for_each_direction(dir) {
3724 INIT_LIST_HEAD(&w->edges[dir]);
3725 w->endpoints[dir] = -1;
3728 /* machine layer sets up unconnected pins and insertions */
3733 if (ret != -EPROBE_DEFER)
3734 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3737 kfree_const(w->sname);
3739 return ERR_PTR(ret);
3743 * snd_soc_dapm_new_control - create new dapm control
3744 * @dapm: DAPM context
3745 * @widget: widget template
3747 * Creates new DAPM control based upon a template.
3749 * Returns a widget pointer on success or an error pointer on failure
3751 struct snd_soc_dapm_widget *
3752 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3753 const struct snd_soc_dapm_widget *widget)
3755 struct snd_soc_dapm_widget *w;
3757 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3758 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3759 mutex_unlock(&dapm->card->dapm_mutex);
3763 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3766 * snd_soc_dapm_new_controls - create new dapm controls
3767 * @dapm: DAPM context
3768 * @widget: widget array
3769 * @num: number of widgets
3771 * Creates new DAPM controls based upon the templates.
3773 * Returns 0 for success else error.
3775 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3776 const struct snd_soc_dapm_widget *widget,
3779 struct snd_soc_dapm_widget *w;
3783 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3784 for (i = 0; i < num; i++) {
3785 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3792 mutex_unlock(&dapm->card->dapm_mutex);
3795 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3798 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3799 struct snd_pcm_substream *substream)
3801 struct snd_soc_dapm_path *path;
3802 struct snd_soc_dai *source, *sink;
3803 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3804 struct snd_pcm_hw_params *params = NULL;
3805 const struct snd_soc_pcm_stream *config = NULL;
3806 struct snd_pcm_runtime *runtime = NULL;
3810 params = kzalloc(sizeof(*params), GFP_KERNEL);
3814 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3820 substream->runtime = runtime;
3822 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3823 snd_soc_dapm_widget_for_each_source_path(w, path) {
3824 source = path->source->priv;
3826 ret = snd_soc_dai_startup(source, substream);
3828 dev_err(source->dev,
3829 "ASoC: startup() failed: %d\n", ret);
3835 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3836 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3837 sink = path->sink->priv;
3839 ret = snd_soc_dai_startup(sink, substream);
3842 "ASoC: startup() failed: %d\n", ret);
3848 substream->hw_opened = 1;
3851 * Note: getting the config after .startup() gives a chance to
3852 * either party on the link to alter the configuration if
3855 config = rtd->dai_link->params + rtd->params_select;
3856 if (WARN_ON(!config)) {
3857 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3862 /* Be a little careful as we don't want to overflow the mask array */
3863 if (config->formats) {
3864 fmt = ffs(config->formats) - 1;
3866 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3873 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3874 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3876 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3878 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3879 = config->channels_min;
3880 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3881 = config->channels_max;
3883 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3884 snd_soc_dapm_widget_for_each_source_path(w, path) {
3885 source = path->source->priv;
3887 ret = snd_soc_dai_hw_params(source, substream, params);
3891 dapm_update_dai_unlocked(substream, params, source);
3894 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3895 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3896 sink = path->sink->priv;
3898 ret = snd_soc_dai_hw_params(sink, substream, params);
3902 dapm_update_dai_unlocked(substream, params, sink);
3905 runtime->format = params_format(params);
3906 runtime->subformat = params_subformat(params);
3907 runtime->channels = params_channels(params);
3908 runtime->rate = params_rate(params);
3915 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3916 struct snd_kcontrol *kcontrol, int event)
3918 struct snd_soc_dapm_path *path;
3919 struct snd_soc_dai *source, *sink;
3920 struct snd_pcm_substream *substream = w->priv;
3921 int ret = 0, saved_stream = substream->stream;
3923 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3924 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3928 case SND_SOC_DAPM_PRE_PMU:
3929 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3935 case SND_SOC_DAPM_POST_PMU:
3936 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3937 sink = path->sink->priv;
3939 ret = snd_soc_dai_digital_mute(sink, 0,
3940 SNDRV_PCM_STREAM_PLAYBACK);
3941 if (ret != 0 && ret != -ENOTSUPP)
3943 "ASoC: Failed to unmute: %d\n", ret);
3948 case SND_SOC_DAPM_PRE_PMD:
3949 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3950 sink = path->sink->priv;
3952 ret = snd_soc_dai_digital_mute(sink, 1,
3953 SNDRV_PCM_STREAM_PLAYBACK);
3954 if (ret != 0 && ret != -ENOTSUPP)
3956 "ASoC: Failed to mute: %d\n", ret);
3960 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3961 snd_soc_dapm_widget_for_each_source_path(w, path) {
3962 source = path->source->priv;
3963 snd_soc_dai_hw_free(source, substream);
3966 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3967 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3968 sink = path->sink->priv;
3969 snd_soc_dai_hw_free(sink, substream);
3972 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3973 snd_soc_dapm_widget_for_each_source_path(w, path) {
3974 source = path->source->priv;
3976 snd_soc_dai_shutdown(source, substream);
3979 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3980 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3981 sink = path->sink->priv;
3983 snd_soc_dai_shutdown(sink, substream);
3987 case SND_SOC_DAPM_POST_PMD:
3988 kfree(substream->runtime);
3992 WARN(1, "Unknown event %d\n", event);
3997 /* Restore the substream direction */
3998 substream->stream = saved_stream;
4002 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4003 struct snd_ctl_elem_value *ucontrol)
4005 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4006 struct snd_soc_pcm_runtime *rtd = w->priv;
4008 ucontrol->value.enumerated.item[0] = rtd->params_select;
4013 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4014 struct snd_ctl_elem_value *ucontrol)
4016 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4017 struct snd_soc_pcm_runtime *rtd = w->priv;
4019 /* Can't change the config when widget is already powered */
4023 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4026 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4029 rtd->params_select = ucontrol->value.enumerated.item[0];
4035 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4036 unsigned long *private_value,
4038 const char **w_param_text)
4042 devm_kfree(card->dev, (void *)*private_value);
4047 for (count = 0 ; count < num_params; count++)
4048 devm_kfree(card->dev, (void *)w_param_text[count]);
4049 devm_kfree(card->dev, w_param_text);
4052 static struct snd_kcontrol_new *
4053 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4055 const struct snd_soc_pcm_stream *params,
4056 int num_params, const char **w_param_text,
4057 unsigned long *private_value)
4059 struct soc_enum w_param_enum[] = {
4060 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4062 struct snd_kcontrol_new kcontrol_dai_link[] = {
4063 SOC_ENUM_EXT(NULL, w_param_enum[0],
4064 snd_soc_dapm_dai_link_get,
4065 snd_soc_dapm_dai_link_put),
4067 struct snd_kcontrol_new *kcontrol_news;
4068 const struct snd_soc_pcm_stream *config = params;
4071 for (count = 0 ; count < num_params; count++) {
4072 if (!config->stream_name) {
4073 dev_warn(card->dapm.dev,
4074 "ASoC: anonymous config %d for dai link %s\n",
4076 w_param_text[count] =
4077 devm_kasprintf(card->dev, GFP_KERNEL,
4078 "Anonymous Configuration %d",
4081 w_param_text[count] = devm_kmemdup(card->dev,
4082 config->stream_name,
4083 strlen(config->stream_name) + 1,
4086 if (!w_param_text[count])
4087 goto outfree_w_param;
4091 w_param_enum[0].items = num_params;
4092 w_param_enum[0].texts = w_param_text;
4095 (unsigned long) devm_kmemdup(card->dev,
4096 (void *)(kcontrol_dai_link[0].private_value),
4097 sizeof(struct soc_enum), GFP_KERNEL);
4098 if (!*private_value) {
4099 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4101 goto outfree_w_param;
4103 kcontrol_dai_link[0].private_value = *private_value;
4104 /* duplicate kcontrol_dai_link on heap so that memory persists */
4105 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4106 sizeof(struct snd_kcontrol_new),
4108 if (!kcontrol_news) {
4109 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4111 goto outfree_w_param;
4113 return kcontrol_news;
4116 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4120 static struct snd_soc_dapm_widget *
4121 snd_soc_dapm_new_dai(struct snd_soc_card *card,
4122 struct snd_pcm_substream *substream,
4125 struct snd_soc_pcm_runtime *rtd = substream->private_data;
4126 struct snd_soc_dapm_widget template;
4127 struct snd_soc_dapm_widget *w;
4128 const char **w_param_text;
4129 unsigned long private_value = 0;
4133 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4134 rtd->dai_link->name, id);
4136 return ERR_PTR(-ENOMEM);
4138 memset(&template, 0, sizeof(template));
4139 template.reg = SND_SOC_NOPM;
4140 template.id = snd_soc_dapm_dai_link;
4141 template.name = link_name;
4142 template.event = snd_soc_dai_link_event;
4143 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4144 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4145 template.kcontrol_news = NULL;
4147 /* allocate memory for control, only in case of multiple configs */
4148 if (rtd->dai_link->num_params > 1) {
4149 w_param_text = devm_kcalloc(card->dev,
4150 rtd->dai_link->num_params,
4151 sizeof(char *), GFP_KERNEL);
4152 if (!w_param_text) {
4157 template.num_kcontrols = 1;
4158 template.kcontrol_news =
4159 snd_soc_dapm_alloc_kcontrol(card,
4161 rtd->dai_link->params,
4162 rtd->dai_link->num_params,
4163 w_param_text, &private_value);
4164 if (!template.kcontrol_news) {
4169 w_param_text = NULL;
4171 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4173 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4176 goto outfree_kcontrol_news;
4179 w->priv = substream;
4183 outfree_kcontrol_news:
4184 devm_kfree(card->dev, (void *)template.kcontrol_news);
4185 snd_soc_dapm_free_kcontrol(card, &private_value,
4186 rtd->dai_link->num_params, w_param_text);
4188 devm_kfree(card->dev, link_name);
4189 return ERR_PTR(ret);
4192 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4193 struct snd_soc_dai *dai)
4195 struct snd_soc_dapm_widget template;
4196 struct snd_soc_dapm_widget *w;
4198 WARN_ON(dapm->dev != dai->dev);
4200 memset(&template, 0, sizeof(template));
4201 template.reg = SND_SOC_NOPM;
4203 if (dai->driver->playback.stream_name) {
4204 template.id = snd_soc_dapm_dai_in;
4205 template.name = dai->driver->playback.stream_name;
4206 template.sname = dai->driver->playback.stream_name;
4208 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4211 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4216 dai->playback_widget = w;
4219 if (dai->driver->capture.stream_name) {
4220 template.id = snd_soc_dapm_dai_out;
4221 template.name = dai->driver->capture.stream_name;
4222 template.sname = dai->driver->capture.stream_name;
4224 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4227 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4232 dai->capture_widget = w;
4238 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4240 struct snd_soc_dapm_widget *dai_w, *w;
4241 struct snd_soc_dapm_widget *src, *sink;
4242 struct snd_soc_dai *dai;
4244 /* For each DAI widget... */
4245 list_for_each_entry(dai_w, &card->widgets, list) {
4246 switch (dai_w->id) {
4247 case snd_soc_dapm_dai_in:
4248 case snd_soc_dapm_dai_out:
4254 /* let users know there is no DAI to link */
4256 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4263 /* ...find all widgets with the same stream and link them */
4264 list_for_each_entry(w, &card->widgets, list) {
4265 if (w->dapm != dai_w->dapm)
4269 case snd_soc_dapm_dai_in:
4270 case snd_soc_dapm_dai_out:
4276 if (!w->sname || !strstr(w->sname, dai_w->sname))
4279 if (dai_w->id == snd_soc_dapm_dai_in) {
4286 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4287 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4294 static void dapm_connect_dai_link_widgets(struct snd_soc_card *card,
4295 struct snd_soc_pcm_runtime *rtd)
4297 struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
4298 struct snd_soc_dai *codec_dai;
4299 struct snd_soc_dapm_widget *playback = NULL, *capture = NULL;
4300 struct snd_soc_dapm_widget *codec, *playback_cpu, *capture_cpu;
4301 struct snd_pcm_substream *substream;
4302 struct snd_pcm_str *streams = rtd->pcm->streams;
4305 if (rtd->dai_link->params) {
4306 playback_cpu = cpu_dai->capture_widget;
4307 capture_cpu = cpu_dai->playback_widget;
4309 playback = cpu_dai->playback_widget;
4310 capture = cpu_dai->capture_widget;
4311 playback_cpu = playback;
4312 capture_cpu = capture;
4315 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4316 /* connect BE DAI playback if widgets are valid */
4317 codec = codec_dai->playback_widget;
4319 if (playback_cpu && codec) {
4321 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4322 playback = snd_soc_dapm_new_dai(card, substream,
4324 if (IS_ERR(playback)) {
4326 "ASoC: Failed to create DAI %s: %ld\n",
4332 snd_soc_dapm_add_path(&card->dapm, playback_cpu,
4333 playback, NULL, NULL);
4336 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4337 cpu_dai->component->name, playback_cpu->name,
4338 codec_dai->component->name, codec->name);
4340 snd_soc_dapm_add_path(&card->dapm, playback, codec,
4345 for_each_rtd_codec_dai(rtd, i, codec_dai) {
4346 /* connect BE DAI capture if widgets are valid */
4347 codec = codec_dai->capture_widget;
4349 if (codec && capture_cpu) {
4351 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4352 capture = snd_soc_dapm_new_dai(card, substream,
4354 if (IS_ERR(capture)) {
4356 "ASoC: Failed to create DAI %s: %ld\n",
4362 snd_soc_dapm_add_path(&card->dapm, capture,
4363 capture_cpu, NULL, NULL);
4366 dev_dbg(rtd->dev, "connected DAI link %s:%s -> %s:%s\n",
4367 codec_dai->component->name, codec->name,
4368 cpu_dai->component->name, capture_cpu->name);
4370 snd_soc_dapm_add_path(&card->dapm, codec, capture,
4376 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4379 struct snd_soc_dapm_widget *w;
4382 if (stream == SNDRV_PCM_STREAM_PLAYBACK)
4383 w = dai->playback_widget;
4385 w = dai->capture_widget;
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;
4420 /* for each BE DAI link... */
4421 for_each_card_rtds(card, rtd) {
4423 * dynamic FE links have no fixed DAI mapping.
4424 * CODEC<->CODEC links have no direct connection.
4426 if (rtd->dai_link->dynamic)
4429 dapm_connect_dai_link_widgets(card, rtd);
4433 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4436 struct snd_soc_dai *codec_dai;
4439 soc_dapm_dai_stream_event(rtd->cpu_dai, stream, event);
4440 for_each_rtd_codec_dai(rtd, i, codec_dai)
4441 soc_dapm_dai_stream_event(codec_dai, stream, event);
4443 dapm_power_widgets(rtd->card, event);
4447 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4448 * @rtd: PCM runtime data
4449 * @stream: stream name
4450 * @event: stream event
4452 * Sends a stream event to the dapm core. The core then makes any
4453 * necessary widget power changes.
4455 * Returns 0 for success else error.
4457 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4460 struct snd_soc_card *card = rtd->card;
4462 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4463 soc_dapm_stream_event(rtd, stream, event);
4464 mutex_unlock(&card->dapm_mutex);
4468 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4469 * @dapm: DAPM context
4472 * Enables input/output pin and its parents or children widgets iff there is
4473 * a valid audio route and active audio stream.
4475 * Requires external locking.
4477 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4478 * do any widget power switching.
4480 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4483 return snd_soc_dapm_set_pin(dapm, pin, 1);
4485 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4488 * snd_soc_dapm_enable_pin - enable pin.
4489 * @dapm: DAPM context
4492 * Enables input/output pin and its parents or children widgets iff there is
4493 * a valid audio route and active audio stream.
4495 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4496 * do any widget power switching.
4498 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4502 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4504 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4506 mutex_unlock(&dapm->card->dapm_mutex);
4510 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4513 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4514 * @dapm: DAPM context
4517 * Enables input/output pin regardless of any other state. This is
4518 * intended for use with microphone bias supplies used in microphone
4521 * Requires external locking.
4523 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4524 * do any widget power switching.
4526 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4529 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4532 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4536 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4537 if (!w->connected) {
4539 * w->force does not affect the number of input or output paths,
4540 * so we only have to recheck if w->connected is changed
4542 dapm_widget_invalidate_input_paths(w);
4543 dapm_widget_invalidate_output_paths(w);
4547 dapm_mark_dirty(w, "force enable");
4551 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4554 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4555 * @dapm: DAPM context
4558 * Enables input/output pin regardless of any other state. This is
4559 * intended for use with microphone bias supplies used in microphone
4562 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4563 * do any widget power switching.
4565 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4570 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4572 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4574 mutex_unlock(&dapm->card->dapm_mutex);
4578 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4581 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4582 * @dapm: DAPM context
4585 * Disables input/output pin and its parents or children widgets.
4587 * Requires external locking.
4589 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4590 * do any widget power switching.
4592 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4595 return snd_soc_dapm_set_pin(dapm, pin, 0);
4597 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4600 * snd_soc_dapm_disable_pin - disable pin.
4601 * @dapm: DAPM context
4604 * Disables input/output pin and its parents or children widgets.
4606 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4607 * do any widget power switching.
4609 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4614 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4616 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4618 mutex_unlock(&dapm->card->dapm_mutex);
4622 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4625 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4626 * @dapm: DAPM context
4629 * Marks the specified pin as being not connected, disabling it along
4630 * any parent or child widgets. At present this is identical to
4631 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4632 * additional things such as disabling controls which only affect
4633 * paths through the pin.
4635 * Requires external locking.
4637 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4638 * do any widget power switching.
4640 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4643 return snd_soc_dapm_set_pin(dapm, pin, 0);
4645 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4648 * snd_soc_dapm_nc_pin - permanently disable pin.
4649 * @dapm: DAPM context
4652 * Marks the specified pin as being not connected, disabling it along
4653 * any parent or child widgets. At present this is identical to
4654 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4655 * additional things such as disabling controls which only affect
4656 * paths through the pin.
4658 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4659 * do any widget power switching.
4661 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4665 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4667 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4669 mutex_unlock(&dapm->card->dapm_mutex);
4673 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4676 * snd_soc_dapm_get_pin_status - get audio pin status
4677 * @dapm: DAPM context
4678 * @pin: audio signal pin endpoint (or start point)
4680 * Get audio pin status - connected or disconnected.
4682 * Returns 1 for connected otherwise 0.
4684 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4687 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4690 return w->connected;
4694 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4697 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4698 * @dapm: DAPM context
4699 * @pin: audio signal pin endpoint (or start point)
4701 * Mark the given endpoint or pin as ignoring suspend. When the
4702 * system is disabled a path between two endpoints flagged as ignoring
4703 * suspend will not be disabled. The path must already be enabled via
4704 * normal means at suspend time, it will not be turned on if it was not
4707 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4710 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4713 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4717 w->ignore_suspend = 1;
4721 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4724 * snd_soc_dapm_free - free dapm resources
4725 * @dapm: DAPM context
4727 * Free all dapm widgets and resources.
4729 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4731 dapm_debugfs_cleanup(dapm);
4732 dapm_free_widgets(dapm);
4733 list_del(&dapm->list);
4735 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4737 void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4738 struct snd_soc_card *card,
4739 struct snd_soc_component *component)
4742 dapm->component = component;
4743 dapm->bias_level = SND_SOC_BIAS_OFF;
4746 dapm->dev = component->dev;
4747 dapm->idle_bias_off = !component->driver->idle_bias_on,
4748 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4750 dapm->dev = card->dev;
4753 INIT_LIST_HEAD(&dapm->list);
4754 list_add(&dapm->list, &card->dapm_list);
4756 EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4758 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4760 struct snd_soc_card *card = dapm->card;
4761 struct snd_soc_dapm_widget *w;
4762 LIST_HEAD(down_list);
4765 mutex_lock(&card->dapm_mutex);
4767 list_for_each_entry(w, &dapm->card->widgets, list) {
4768 if (w->dapm != dapm)
4771 dapm_seq_insert(w, &down_list, false);
4777 /* If there were no widgets to power down we're already in
4781 if (dapm->bias_level == SND_SOC_BIAS_ON)
4782 snd_soc_dapm_set_bias_level(dapm,
4783 SND_SOC_BIAS_PREPARE);
4784 dapm_seq_run(card, &down_list, 0, false);
4785 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4786 snd_soc_dapm_set_bias_level(dapm,
4787 SND_SOC_BIAS_STANDBY);
4790 mutex_unlock(&card->dapm_mutex);
4794 * snd_soc_dapm_shutdown - callback for system shutdown
4796 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4798 struct snd_soc_dapm_context *dapm;
4800 list_for_each_entry(dapm, &card->dapm_list, list) {
4801 if (dapm != &card->dapm) {
4802 soc_dapm_shutdown_dapm(dapm);
4803 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4804 snd_soc_dapm_set_bias_level(dapm,
4809 soc_dapm_shutdown_dapm(&card->dapm);
4810 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4811 snd_soc_dapm_set_bias_level(&card->dapm,
4815 /* Module information */
4816 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4817 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4818 MODULE_LICENSE("GPL");