1 // SPDX-License-Identifier: GPL-2.0+
3 // soc-dapm.c -- ALSA SoC Dynamic Audio Power Management
5 // Copyright 2005 Wolfson Microelectronics PLC.
6 // Author: Liam Girdwood <lrg@slimlogic.co.uk>
9 // o Changes power status of internal codec blocks depending on the
10 // dynamic configuration of codec internal audio paths and active
12 // o Platform power domain - can support external components i.e. amps and
13 // mic/headphone insertion events.
14 // o Automatic Mic Bias support
15 // o Jack insertion power event initiation - e.g. hp insertion will enable
17 // o Delayed power down of audio subsystem to reduce pops between a quick
20 #include <linux/module.h>
21 #include <linux/init.h>
22 #include <linux/async.h>
23 #include <linux/delay.h>
25 #include <linux/bitops.h>
26 #include <linux/platform_device.h>
27 #include <linux/jiffies.h>
28 #include <linux/debugfs.h>
29 #include <linux/pm_runtime.h>
30 #include <linux/regulator/consumer.h>
31 #include <linux/pinctrl/consumer.h>
32 #include <linux/clk.h>
33 #include <linux/slab.h>
34 #include <sound/core.h>
35 #include <sound/pcm.h>
36 #include <sound/pcm_params.h>
37 #include <sound/soc.h>
38 #include <sound/initval.h>
40 #include <trace/events/asoc.h>
42 #define DAPM_UPDATE_STAT(widget, val) widget->dapm->card->dapm_stats.val++;
44 #define SND_SOC_DAPM_DIR_REVERSE(x) ((x == SND_SOC_DAPM_DIR_IN) ? \
45 SND_SOC_DAPM_DIR_OUT : SND_SOC_DAPM_DIR_IN)
47 #define snd_soc_dapm_for_each_direction(dir) \
48 for ((dir) = SND_SOC_DAPM_DIR_IN; (dir) <= SND_SOC_DAPM_DIR_OUT; \
51 static int snd_soc_dapm_add_path(struct snd_soc_dapm_context *dapm,
52 struct snd_soc_dapm_widget *wsource, struct snd_soc_dapm_widget *wsink,
54 int (*connected)(struct snd_soc_dapm_widget *source,
55 struct snd_soc_dapm_widget *sink));
57 struct snd_soc_dapm_widget *
58 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
59 const struct snd_soc_dapm_widget *widget);
61 struct snd_soc_dapm_widget *
62 snd_soc_dapm_new_control_unlocked(struct snd_soc_dapm_context *dapm,
63 const struct snd_soc_dapm_widget *widget);
65 /* dapm power sequences - make this per codec in the future */
66 static int dapm_up_seq[] = {
67 [snd_soc_dapm_pre] = 1,
68 [snd_soc_dapm_regulator_supply] = 2,
69 [snd_soc_dapm_pinctrl] = 2,
70 [snd_soc_dapm_clock_supply] = 2,
71 [snd_soc_dapm_supply] = 3,
72 [snd_soc_dapm_micbias] = 4,
73 [snd_soc_dapm_vmid] = 4,
74 [snd_soc_dapm_dai_link] = 3,
75 [snd_soc_dapm_dai_in] = 5,
76 [snd_soc_dapm_dai_out] = 5,
77 [snd_soc_dapm_aif_in] = 5,
78 [snd_soc_dapm_aif_out] = 5,
79 [snd_soc_dapm_mic] = 6,
80 [snd_soc_dapm_siggen] = 6,
81 [snd_soc_dapm_input] = 6,
82 [snd_soc_dapm_output] = 6,
83 [snd_soc_dapm_mux] = 7,
84 [snd_soc_dapm_demux] = 7,
85 [snd_soc_dapm_dac] = 8,
86 [snd_soc_dapm_switch] = 9,
87 [snd_soc_dapm_mixer] = 9,
88 [snd_soc_dapm_mixer_named_ctl] = 9,
89 [snd_soc_dapm_pga] = 10,
90 [snd_soc_dapm_buffer] = 10,
91 [snd_soc_dapm_scheduler] = 10,
92 [snd_soc_dapm_effect] = 10,
93 [snd_soc_dapm_src] = 10,
94 [snd_soc_dapm_asrc] = 10,
95 [snd_soc_dapm_encoder] = 10,
96 [snd_soc_dapm_decoder] = 10,
97 [snd_soc_dapm_adc] = 11,
98 [snd_soc_dapm_out_drv] = 12,
99 [snd_soc_dapm_hp] = 12,
100 [snd_soc_dapm_spk] = 12,
101 [snd_soc_dapm_line] = 12,
102 [snd_soc_dapm_sink] = 12,
103 [snd_soc_dapm_kcontrol] = 13,
104 [snd_soc_dapm_post] = 14,
107 static int dapm_down_seq[] = {
108 [snd_soc_dapm_pre] = 1,
109 [snd_soc_dapm_kcontrol] = 2,
110 [snd_soc_dapm_adc] = 3,
111 [snd_soc_dapm_hp] = 4,
112 [snd_soc_dapm_spk] = 4,
113 [snd_soc_dapm_line] = 4,
114 [snd_soc_dapm_out_drv] = 4,
115 [snd_soc_dapm_sink] = 4,
116 [snd_soc_dapm_pga] = 5,
117 [snd_soc_dapm_buffer] = 5,
118 [snd_soc_dapm_scheduler] = 5,
119 [snd_soc_dapm_effect] = 5,
120 [snd_soc_dapm_src] = 5,
121 [snd_soc_dapm_asrc] = 5,
122 [snd_soc_dapm_encoder] = 5,
123 [snd_soc_dapm_decoder] = 5,
124 [snd_soc_dapm_switch] = 6,
125 [snd_soc_dapm_mixer_named_ctl] = 6,
126 [snd_soc_dapm_mixer] = 6,
127 [snd_soc_dapm_dac] = 7,
128 [snd_soc_dapm_mic] = 8,
129 [snd_soc_dapm_siggen] = 8,
130 [snd_soc_dapm_input] = 8,
131 [snd_soc_dapm_output] = 8,
132 [snd_soc_dapm_micbias] = 9,
133 [snd_soc_dapm_vmid] = 9,
134 [snd_soc_dapm_mux] = 10,
135 [snd_soc_dapm_demux] = 10,
136 [snd_soc_dapm_aif_in] = 11,
137 [snd_soc_dapm_aif_out] = 11,
138 [snd_soc_dapm_dai_in] = 11,
139 [snd_soc_dapm_dai_out] = 11,
140 [snd_soc_dapm_dai_link] = 12,
141 [snd_soc_dapm_supply] = 13,
142 [snd_soc_dapm_clock_supply] = 14,
143 [snd_soc_dapm_pinctrl] = 14,
144 [snd_soc_dapm_regulator_supply] = 14,
145 [snd_soc_dapm_post] = 15,
148 static void dapm_assert_locked(struct snd_soc_dapm_context *dapm)
150 if (dapm->card && dapm->card->instantiated)
151 lockdep_assert_held(&dapm->card->dapm_mutex);
154 static void pop_wait(u32 pop_time)
157 schedule_timeout_uninterruptible(msecs_to_jiffies(pop_time));
161 static void pop_dbg(struct device *dev, u32 pop_time, const char *fmt, ...)
169 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
174 vsnprintf(buf, PAGE_SIZE, fmt, args);
175 dev_info(dev, "%s", buf);
181 static bool dapm_dirty_widget(struct snd_soc_dapm_widget *w)
183 return !list_empty(&w->dirty);
186 static void dapm_mark_dirty(struct snd_soc_dapm_widget *w, const char *reason)
188 dapm_assert_locked(w->dapm);
190 if (!dapm_dirty_widget(w)) {
191 dev_vdbg(w->dapm->dev, "Marking %s dirty due to %s\n",
193 list_add_tail(&w->dirty, &w->dapm->card->dapm_dirty);
198 * Common implementation for dapm_widget_invalidate_input_paths() and
199 * dapm_widget_invalidate_output_paths(). The function is inlined since the
200 * combined size of the two specialized functions is only marginally larger then
201 * the size of the generic function and at the same time the fast path of the
202 * specialized functions is significantly smaller than the generic function.
204 static __always_inline void dapm_widget_invalidate_paths(
205 struct snd_soc_dapm_widget *w, enum snd_soc_dapm_direction dir)
207 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
208 struct snd_soc_dapm_widget *node;
209 struct snd_soc_dapm_path *p;
212 dapm_assert_locked(w->dapm);
214 if (w->endpoints[dir] == -1)
217 list_add_tail(&w->work_list, &list);
218 w->endpoints[dir] = -1;
220 list_for_each_entry(w, &list, work_list) {
221 snd_soc_dapm_widget_for_each_path(w, dir, p) {
222 if (p->is_supply || p->weak || !p->connect)
224 node = p->node[rdir];
225 if (node->endpoints[dir] != -1) {
226 node->endpoints[dir] = -1;
227 list_add_tail(&node->work_list, &list);
234 * dapm_widget_invalidate_input_paths() - Invalidate the cached number of
236 * @w: The widget for which to invalidate the cached number of input paths
238 * Resets the cached number of inputs for the specified widget and all widgets
239 * that can be reached via outcoming paths from the widget.
241 * This function must be called if the number of output paths for a widget might
242 * have changed. E.g. if the source state of a widget changes or a path is added
243 * or activated with the widget as the sink.
245 static void dapm_widget_invalidate_input_paths(struct snd_soc_dapm_widget *w)
247 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_IN);
251 * dapm_widget_invalidate_output_paths() - Invalidate the cached number of
253 * @w: The widget for which to invalidate the cached number of output paths
255 * Resets the cached number of outputs for the specified widget and all widgets
256 * that can be reached via incoming paths from the widget.
258 * This function must be called if the number of output paths for a widget might
259 * have changed. E.g. if the sink state of a widget changes or a path is added
260 * or activated with the widget as the source.
262 static void dapm_widget_invalidate_output_paths(struct snd_soc_dapm_widget *w)
264 dapm_widget_invalidate_paths(w, SND_SOC_DAPM_DIR_OUT);
268 * dapm_path_invalidate() - Invalidates the cached number of inputs and outputs
269 * for the widgets connected to a path
270 * @p: The path to invalidate
272 * Resets the cached number of inputs for the sink of the path and the cached
273 * number of outputs for the source of the path.
275 * This function must be called when a path is added, removed or the connected
278 static void dapm_path_invalidate(struct snd_soc_dapm_path *p)
281 * Weak paths or supply paths do not influence the number of input or
282 * output paths of their neighbors.
284 if (p->weak || p->is_supply)
288 * The number of connected endpoints is the sum of the number of
289 * connected endpoints of all neighbors. If a node with 0 connected
290 * endpoints is either connected or disconnected that sum won't change,
291 * so there is no need to re-check the path.
293 if (p->source->endpoints[SND_SOC_DAPM_DIR_IN] != 0)
294 dapm_widget_invalidate_input_paths(p->sink);
295 if (p->sink->endpoints[SND_SOC_DAPM_DIR_OUT] != 0)
296 dapm_widget_invalidate_output_paths(p->source);
299 void dapm_mark_endpoints_dirty(struct snd_soc_card *card)
301 struct snd_soc_dapm_widget *w;
303 mutex_lock(&card->dapm_mutex);
305 for_each_card_widgets(card, w) {
307 dapm_mark_dirty(w, "Rechecking endpoints");
308 if (w->is_ep & SND_SOC_DAPM_EP_SINK)
309 dapm_widget_invalidate_output_paths(w);
310 if (w->is_ep & SND_SOC_DAPM_EP_SOURCE)
311 dapm_widget_invalidate_input_paths(w);
315 mutex_unlock(&card->dapm_mutex);
317 EXPORT_SYMBOL_GPL(dapm_mark_endpoints_dirty);
319 /* create a new dapm widget */
320 static inline struct snd_soc_dapm_widget *dapm_cnew_widget(
321 const struct snd_soc_dapm_widget *_widget)
323 struct snd_soc_dapm_widget *w;
325 w = kmemdup(_widget, sizeof(*_widget), GFP_KERNEL);
330 * w->name is duplicated in caller, but w->sname isn't.
331 * Duplicate it here if defined
333 if (_widget->sname) {
334 w->sname = kstrdup_const(_widget->sname, GFP_KERNEL);
343 struct dapm_kcontrol_data {
345 struct snd_soc_dapm_widget *widget;
346 struct list_head paths;
347 struct snd_soc_dapm_widget_list *wlist;
350 static int dapm_kcontrol_data_alloc(struct snd_soc_dapm_widget *widget,
351 struct snd_kcontrol *kcontrol, const char *ctrl_name)
353 struct dapm_kcontrol_data *data;
354 struct soc_mixer_control *mc;
359 data = kzalloc(sizeof(*data), GFP_KERNEL);
363 INIT_LIST_HEAD(&data->paths);
365 switch (widget->id) {
366 case snd_soc_dapm_switch:
367 case snd_soc_dapm_mixer:
368 case snd_soc_dapm_mixer_named_ctl:
369 mc = (struct soc_mixer_control *)kcontrol->private_value;
371 if (mc->autodisable && snd_soc_volsw_is_stereo(mc))
372 dev_warn(widget->dapm->dev,
373 "ASoC: Unsupported stereo autodisable control '%s'\n",
376 if (mc->autodisable) {
377 struct snd_soc_dapm_widget template;
379 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
386 memset(&template, 0, sizeof(template));
387 template.reg = mc->reg;
388 template.mask = (1 << fls(mc->max)) - 1;
389 template.shift = mc->shift;
391 template.off_val = mc->max;
393 template.off_val = 0;
394 template.on_val = template.off_val;
395 template.id = snd_soc_dapm_kcontrol;
396 template.name = name;
398 data->value = template.on_val;
401 snd_soc_dapm_new_control_unlocked(widget->dapm,
404 if (IS_ERR(data->widget)) {
405 ret = PTR_ERR(data->widget);
410 case snd_soc_dapm_demux:
411 case snd_soc_dapm_mux:
412 e = (struct soc_enum *)kcontrol->private_value;
414 if (e->autodisable) {
415 struct snd_soc_dapm_widget template;
417 name = kasprintf(GFP_KERNEL, "%s %s", ctrl_name,
424 memset(&template, 0, sizeof(template));
425 template.reg = e->reg;
426 template.mask = e->mask;
427 template.shift = e->shift_l;
428 template.off_val = snd_soc_enum_item_to_val(e, 0);
429 template.on_val = template.off_val;
430 template.id = snd_soc_dapm_kcontrol;
431 template.name = name;
433 data->value = template.on_val;
435 data->widget = snd_soc_dapm_new_control_unlocked(
436 widget->dapm, &template);
438 if (IS_ERR(data->widget)) {
439 ret = PTR_ERR(data->widget);
443 snd_soc_dapm_add_path(widget->dapm, data->widget,
451 kcontrol->private_data = data;
460 static void dapm_kcontrol_free(struct snd_kcontrol *kctl)
462 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kctl);
464 list_del(&data->paths);
469 static struct snd_soc_dapm_widget_list *dapm_kcontrol_get_wlist(
470 const struct snd_kcontrol *kcontrol)
472 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
477 static int dapm_kcontrol_add_widget(struct snd_kcontrol *kcontrol,
478 struct snd_soc_dapm_widget *widget)
480 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
481 struct snd_soc_dapm_widget_list *new_wlist;
485 n = data->wlist->num_widgets + 1;
489 new_wlist = krealloc(data->wlist,
490 struct_size(new_wlist, widgets, n),
495 new_wlist->widgets[n - 1] = widget;
496 new_wlist->num_widgets = n;
498 data->wlist = new_wlist;
503 static void dapm_kcontrol_add_path(const struct snd_kcontrol *kcontrol,
504 struct snd_soc_dapm_path *path)
506 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
508 list_add_tail(&path->list_kcontrol, &data->paths);
511 static bool dapm_kcontrol_is_powered(const struct snd_kcontrol *kcontrol)
513 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
518 return data->widget->power;
521 static struct list_head *dapm_kcontrol_get_path_list(
522 const struct snd_kcontrol *kcontrol)
524 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
529 #define dapm_kcontrol_for_each_path(path, kcontrol) \
530 list_for_each_entry(path, dapm_kcontrol_get_path_list(kcontrol), \
533 unsigned int dapm_kcontrol_get_value(const struct snd_kcontrol *kcontrol)
535 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
539 EXPORT_SYMBOL_GPL(dapm_kcontrol_get_value);
541 static bool dapm_kcontrol_set_value(const struct snd_kcontrol *kcontrol,
544 struct dapm_kcontrol_data *data = snd_kcontrol_chip(kcontrol);
546 if (data->value == value)
550 switch (dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->id) {
551 case snd_soc_dapm_switch:
552 case snd_soc_dapm_mixer:
553 case snd_soc_dapm_mixer_named_ctl:
554 data->widget->on_val = value & data->widget->mask;
556 case snd_soc_dapm_demux:
557 case snd_soc_dapm_mux:
558 data->widget->on_val = value >> data->widget->shift;
561 data->widget->on_val = value;
572 * snd_soc_dapm_kcontrol_widget() - Returns the widget associated to a
574 * @kcontrol: The kcontrol
576 struct snd_soc_dapm_widget *snd_soc_dapm_kcontrol_widget(
577 struct snd_kcontrol *kcontrol)
579 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0];
581 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_widget);
584 * snd_soc_dapm_kcontrol_dapm() - Returns the dapm context associated to a
586 * @kcontrol: The kcontrol
588 * Note: This function must only be used on kcontrols that are known to have
589 * been registered for a CODEC. Otherwise the behaviour is undefined.
591 struct snd_soc_dapm_context *snd_soc_dapm_kcontrol_dapm(
592 struct snd_kcontrol *kcontrol)
594 return dapm_kcontrol_get_wlist(kcontrol)->widgets[0]->dapm;
596 EXPORT_SYMBOL_GPL(snd_soc_dapm_kcontrol_dapm);
598 static void dapm_reset(struct snd_soc_card *card)
600 struct snd_soc_dapm_widget *w;
602 lockdep_assert_held(&card->dapm_mutex);
604 memset(&card->dapm_stats, 0, sizeof(card->dapm_stats));
606 for_each_card_widgets(card, w) {
607 w->new_power = w->power;
608 w->power_checked = false;
612 static const char *soc_dapm_prefix(struct snd_soc_dapm_context *dapm)
614 if (!dapm->component)
616 return dapm->component->name_prefix;
619 static 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 ret = snd_soc_card_set_bias_level(card, dapm, level);
732 if (!card || dapm != &card->dapm)
733 ret = snd_soc_dapm_force_bias_level(dapm, level);
738 ret = snd_soc_card_set_bias_level_post(card, dapm, level);
740 trace_snd_soc_bias_level_done(card, level);
745 /* connect mux widget to its interconnecting audio paths */
746 static int dapm_connect_mux(struct snd_soc_dapm_context *dapm,
747 struct snd_soc_dapm_path *path, const char *control_name,
748 struct snd_soc_dapm_widget *w)
750 const struct snd_kcontrol_new *kcontrol = &w->kcontrol_news[0];
751 struct soc_enum *e = (struct soc_enum *)kcontrol->private_value;
752 unsigned int val, item;
755 if (e->reg != SND_SOC_NOPM) {
756 soc_dapm_read(dapm, e->reg, &val);
757 val = (val >> e->shift_l) & e->mask;
758 item = snd_soc_enum_val_to_item(e, val);
760 /* since a virtual mux has no backing registers to
761 * decide which path to connect, it will try to match
762 * with the first enumeration. This is to ensure
763 * that the default mux choice (the first) will be
764 * correctly powered up during initialization.
769 i = match_string(e->texts, e->items, control_name);
773 path->name = e->texts[i];
774 path->connect = (i == item);
779 /* set up initial codec paths */
780 static void dapm_set_mixer_path_status(struct snd_soc_dapm_path *p, int i,
783 struct soc_mixer_control *mc = (struct soc_mixer_control *)
784 p->sink->kcontrol_news[i].private_value;
785 unsigned int reg = mc->reg;
786 unsigned int shift = mc->shift;
787 unsigned int max = mc->max;
788 unsigned int mask = (1 << fls(max)) - 1;
789 unsigned int invert = mc->invert;
792 if (reg != SND_SOC_NOPM) {
793 soc_dapm_read(p->sink->dapm, reg, &val);
795 * The nth_path argument allows this function to know
796 * which path of a kcontrol it is setting the initial
797 * status for. Ideally this would support any number
798 * of paths and channels. But since kcontrols only come
799 * in mono and stereo variants, we are limited to 2
802 * The following code assumes for stereo controls the
803 * first path is the left channel, and all remaining
804 * paths are the right channel.
806 if (snd_soc_volsw_is_stereo(mc) && nth_path > 0) {
808 soc_dapm_read(p->sink->dapm, mc->rreg, &val);
809 val = (val >> mc->rshift) & mask;
811 val = (val >> shift) & mask;
817 /* since a virtual mixer has no backing registers to
818 * decide which path to connect, it will try to match
819 * with initial state. This is to ensure
820 * that the default mixer choice will be
821 * correctly powered up during initialization.
827 /* connect mixer widget to its interconnecting audio paths */
828 static int dapm_connect_mixer(struct snd_soc_dapm_context *dapm,
829 struct snd_soc_dapm_path *path, const char *control_name)
833 /* search for mixer kcontrol */
834 for (i = 0; i < path->sink->num_kcontrols; i++) {
835 if (!strcmp(control_name, path->sink->kcontrol_news[i].name)) {
836 path->name = path->sink->kcontrol_news[i].name;
837 dapm_set_mixer_path_status(path, i, nth_path++);
844 static int dapm_is_shared_kcontrol(struct snd_soc_dapm_context *dapm,
845 struct snd_soc_dapm_widget *kcontrolw,
846 const struct snd_kcontrol_new *kcontrol_new,
847 struct snd_kcontrol **kcontrol)
849 struct snd_soc_dapm_widget *w;
854 for_each_card_widgets(dapm->card, w) {
855 if (w == kcontrolw || w->dapm != kcontrolw->dapm)
857 for (i = 0; i < w->num_kcontrols; i++) {
858 if (&w->kcontrol_news[i] == kcontrol_new) {
860 *kcontrol = w->kcontrols[i];
870 * Determine if a kcontrol is shared. If it is, look it up. If it isn't,
871 * create it. Either way, add the widget into the control's widget list
873 static int dapm_create_or_share_kcontrol(struct snd_soc_dapm_widget *w,
876 struct snd_soc_dapm_context *dapm = w->dapm;
877 struct snd_card *card = dapm->card->snd_card;
881 struct snd_kcontrol *kcontrol;
882 bool wname_in_long_name, kcname_in_long_name;
883 char *long_name = NULL;
887 prefix = soc_dapm_prefix(dapm);
889 prefix_len = strlen(prefix) + 1;
893 shared = dapm_is_shared_kcontrol(dapm, w, &w->kcontrol_news[kci],
898 wname_in_long_name = false;
899 kcname_in_long_name = true;
902 case snd_soc_dapm_switch:
903 case snd_soc_dapm_mixer:
904 case snd_soc_dapm_pga:
905 case snd_soc_dapm_effect:
906 case snd_soc_dapm_out_drv:
907 wname_in_long_name = true;
908 kcname_in_long_name = true;
910 case snd_soc_dapm_mixer_named_ctl:
911 wname_in_long_name = false;
912 kcname_in_long_name = true;
914 case snd_soc_dapm_demux:
915 case snd_soc_dapm_mux:
916 wname_in_long_name = true;
917 kcname_in_long_name = false;
924 if (wname_in_long_name && kcname_in_long_name) {
926 * The control will get a prefix from the control
927 * creation process but we're also using the same
928 * prefix for widgets so cut the prefix off the
929 * front of the widget name.
931 long_name = kasprintf(GFP_KERNEL, "%s %s",
932 w->name + prefix_len,
933 w->kcontrol_news[kci].name);
934 if (long_name == NULL)
938 } else if (wname_in_long_name) {
940 name = w->name + prefix_len;
943 name = w->kcontrol_news[kci].name;
946 kcontrol = snd_soc_cnew(&w->kcontrol_news[kci], NULL, name,
953 kcontrol->private_free = dapm_kcontrol_free;
955 ret = dapm_kcontrol_data_alloc(w, kcontrol, name);
957 snd_ctl_free_one(kcontrol);
961 ret = snd_ctl_add(card, kcontrol);
964 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
970 ret = dapm_kcontrol_add_widget(kcontrol, w);
972 w->kcontrols[kci] = kcontrol;
980 /* create new dapm mixer control */
981 static int dapm_new_mixer(struct snd_soc_dapm_widget *w)
984 struct snd_soc_dapm_path *path;
985 struct dapm_kcontrol_data *data;
988 for (i = 0; i < w->num_kcontrols; i++) {
990 snd_soc_dapm_widget_for_each_source_path(w, path) {
991 /* mixer/mux paths name must match control name */
992 if (path->name != (char *)w->kcontrol_news[i].name)
995 if (!w->kcontrols[i]) {
996 ret = dapm_create_or_share_kcontrol(w, i);
1001 dapm_kcontrol_add_path(w->kcontrols[i], path);
1003 data = snd_kcontrol_chip(w->kcontrols[i]);
1005 snd_soc_dapm_add_path(data->widget->dapm,
1015 /* create new dapm mux control */
1016 static int dapm_new_mux(struct snd_soc_dapm_widget *w)
1018 struct snd_soc_dapm_context *dapm = w->dapm;
1019 enum snd_soc_dapm_direction dir;
1020 struct snd_soc_dapm_path *path;
1025 case snd_soc_dapm_mux:
1026 dir = SND_SOC_DAPM_DIR_OUT;
1029 case snd_soc_dapm_demux:
1030 dir = SND_SOC_DAPM_DIR_IN;
1037 if (w->num_kcontrols != 1) {
1039 "ASoC: %s %s has incorrect number of controls\n", type,
1044 if (list_empty(&w->edges[dir])) {
1045 dev_err(dapm->dev, "ASoC: %s %s has no paths\n", type, w->name);
1049 ret = dapm_create_or_share_kcontrol(w, 0);
1053 snd_soc_dapm_widget_for_each_path(w, dir, path) {
1055 dapm_kcontrol_add_path(w->kcontrols[0], path);
1061 /* create new dapm volume control */
1062 static int dapm_new_pga(struct snd_soc_dapm_widget *w)
1066 for (i = 0; i < w->num_kcontrols; i++) {
1067 ret = dapm_create_or_share_kcontrol(w, i);
1075 /* create new dapm dai link control */
1076 static int dapm_new_dai_link(struct snd_soc_dapm_widget *w)
1079 struct snd_kcontrol *kcontrol;
1080 struct snd_soc_dapm_context *dapm = w->dapm;
1081 struct snd_card *card = dapm->card->snd_card;
1082 struct snd_soc_pcm_runtime *rtd = w->priv;
1084 /* create control for links with > 1 config */
1085 if (rtd->dai_link->num_params <= 1)
1089 for (i = 0; i < w->num_kcontrols; i++) {
1090 kcontrol = snd_soc_cnew(&w->kcontrol_news[i], w,
1092 ret = snd_ctl_add(card, kcontrol);
1095 "ASoC: failed to add widget %s dapm kcontrol %s: %d\n",
1096 w->name, w->kcontrol_news[i].name, ret);
1099 kcontrol->private_data = w;
1100 w->kcontrols[i] = kcontrol;
1106 /* We implement power down on suspend by checking the power state of
1107 * the ALSA card - when we are suspending the ALSA state for the card
1110 static int snd_soc_dapm_suspend_check(struct snd_soc_dapm_widget *widget)
1112 int level = snd_power_get_state(widget->dapm->card->snd_card);
1115 case SNDRV_CTL_POWER_D3hot:
1116 case SNDRV_CTL_POWER_D3cold:
1117 if (widget->ignore_suspend)
1118 dev_dbg(widget->dapm->dev, "ASoC: %s ignoring suspend\n",
1120 return widget->ignore_suspend;
1126 static void dapm_widget_list_free(struct snd_soc_dapm_widget_list **list)
1131 static int dapm_widget_list_create(struct snd_soc_dapm_widget_list **list,
1132 struct list_head *widgets)
1134 struct snd_soc_dapm_widget *w;
1135 struct list_head *it;
1136 unsigned int size = 0;
1139 list_for_each(it, widgets)
1142 *list = kzalloc(struct_size(*list, widgets, size), GFP_KERNEL);
1146 list_for_each_entry(w, widgets, work_list)
1147 (*list)->widgets[i++] = w;
1149 (*list)->num_widgets = i;
1155 * Recursively reset the cached number of inputs or outputs for the specified
1156 * widget and all widgets that can be reached via incoming or outcoming paths
1159 static void invalidate_paths_ep(struct snd_soc_dapm_widget *widget,
1160 enum snd_soc_dapm_direction dir)
1162 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1163 struct snd_soc_dapm_path *path;
1165 widget->endpoints[dir] = -1;
1167 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1168 if (path->weak || path->is_supply)
1174 if (path->connect) {
1176 invalidate_paths_ep(path->node[dir], dir);
1183 * Common implementation for is_connected_output_ep() and
1184 * is_connected_input_ep(). The function is inlined since the combined size of
1185 * the two specialized functions is only marginally larger then the size of the
1186 * generic function and at the same time the fast path of the specialized
1187 * functions is significantly smaller than the generic function.
1189 static __always_inline int is_connected_ep(struct snd_soc_dapm_widget *widget,
1190 struct list_head *list, enum snd_soc_dapm_direction dir,
1191 int (*fn)(struct snd_soc_dapm_widget *, struct list_head *,
1192 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1193 enum snd_soc_dapm_direction)),
1194 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1195 enum snd_soc_dapm_direction))
1197 enum snd_soc_dapm_direction rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
1198 struct snd_soc_dapm_path *path;
1201 if (widget->endpoints[dir] >= 0)
1202 return widget->endpoints[dir];
1204 DAPM_UPDATE_STAT(widget, path_checks);
1206 /* do we need to add this widget to the list ? */
1208 list_add_tail(&widget->work_list, list);
1210 if (custom_stop_condition && custom_stop_condition(widget, dir)) {
1212 custom_stop_condition = NULL;
1215 if ((widget->is_ep & SND_SOC_DAPM_DIR_TO_EP(dir)) && widget->connected) {
1216 widget->endpoints[dir] = snd_soc_dapm_suspend_check(widget);
1217 return widget->endpoints[dir];
1220 snd_soc_dapm_widget_for_each_path(widget, rdir, path) {
1221 DAPM_UPDATE_STAT(widget, neighbour_checks);
1223 if (path->weak || path->is_supply)
1229 trace_snd_soc_dapm_path(widget, dir, path);
1231 if (path->connect) {
1233 con += fn(path->node[dir], list, custom_stop_condition);
1238 widget->endpoints[dir] = con;
1244 * Recursively check for a completed path to an active or physically connected
1245 * output widget. Returns number of complete paths.
1247 * Optionally, can be supplied with a function acting as a stopping condition.
1248 * This function takes the dapm widget currently being examined and the walk
1249 * direction as an arguments, it should return true if widgets from that point
1250 * in the graph onwards should not be added to the widget list.
1252 static int is_connected_output_ep(struct snd_soc_dapm_widget *widget,
1253 struct list_head *list,
1254 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1255 enum snd_soc_dapm_direction))
1257 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_OUT,
1258 is_connected_output_ep, custom_stop_condition);
1262 * Recursively check for a completed path to an active or physically connected
1263 * input widget. Returns number of complete paths.
1265 * Optionally, can be supplied with a function acting as a stopping condition.
1266 * This function takes the dapm widget currently being examined and the walk
1267 * direction as an arguments, it should return true if the walk should be
1268 * stopped and false otherwise.
1270 static int is_connected_input_ep(struct snd_soc_dapm_widget *widget,
1271 struct list_head *list,
1272 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *i,
1273 enum snd_soc_dapm_direction))
1275 return is_connected_ep(widget, list, SND_SOC_DAPM_DIR_IN,
1276 is_connected_input_ep, custom_stop_condition);
1280 * snd_soc_dapm_get_connected_widgets - query audio path and it's widgets.
1281 * @dai: the soc DAI.
1282 * @stream: stream direction.
1283 * @list: list of active widgets for this stream.
1284 * @custom_stop_condition: (optional) a function meant to stop the widget graph
1285 * walk based on custom logic.
1287 * Queries DAPM graph as to whether a valid audio stream path exists for
1288 * the initial stream specified by name. This takes into account
1289 * current mixer and mux kcontrol settings. Creates list of valid widgets.
1291 * Optionally, can be supplied with a function acting as a stopping condition.
1292 * This function takes the dapm widget currently being examined and the walk
1293 * direction as an arguments, it should return true if the walk should be
1294 * stopped and false otherwise.
1296 * Returns the number of valid paths or negative error.
1298 int snd_soc_dapm_dai_get_connected_widgets(struct snd_soc_dai *dai, int stream,
1299 struct snd_soc_dapm_widget_list **list,
1300 bool (*custom_stop_condition)(struct snd_soc_dapm_widget *,
1301 enum snd_soc_dapm_direction))
1303 struct snd_soc_card *card = dai->component->card;
1304 struct snd_soc_dapm_widget *w;
1309 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
1311 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
1312 w = dai->playback_widget;
1313 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_OUT);
1314 paths = is_connected_output_ep(w, &widgets,
1315 custom_stop_condition);
1317 w = dai->capture_widget;
1318 invalidate_paths_ep(w, SND_SOC_DAPM_DIR_IN);
1319 paths = is_connected_input_ep(w, &widgets,
1320 custom_stop_condition);
1323 /* Drop starting point */
1324 list_del(widgets.next);
1326 ret = dapm_widget_list_create(list, &widgets);
1330 trace_snd_soc_dapm_connected(paths, stream);
1331 mutex_unlock(&card->dapm_mutex);
1336 void snd_soc_dapm_dai_free_widgets(struct snd_soc_dapm_widget_list **list)
1338 dapm_widget_list_free(list);
1342 * Handler for regulator supply widget.
1344 int dapm_regulator_event(struct snd_soc_dapm_widget *w,
1345 struct snd_kcontrol *kcontrol, int event)
1349 soc_dapm_async_complete(w->dapm);
1351 if (SND_SOC_DAPM_EVENT_ON(event)) {
1352 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1353 ret = regulator_allow_bypass(w->regulator, false);
1355 dev_warn(w->dapm->dev,
1356 "ASoC: Failed to unbypass %s: %d\n",
1360 return regulator_enable(w->regulator);
1362 if (w->on_val & SND_SOC_DAPM_REGULATOR_BYPASS) {
1363 ret = regulator_allow_bypass(w->regulator, true);
1365 dev_warn(w->dapm->dev,
1366 "ASoC: Failed to bypass %s: %d\n",
1370 return regulator_disable_deferred(w->regulator, w->shift);
1373 EXPORT_SYMBOL_GPL(dapm_regulator_event);
1376 * Handler for pinctrl widget.
1378 int dapm_pinctrl_event(struct snd_soc_dapm_widget *w,
1379 struct snd_kcontrol *kcontrol, int event)
1381 struct snd_soc_dapm_pinctrl_priv *priv = w->priv;
1382 struct pinctrl *p = w->pinctrl;
1383 struct pinctrl_state *s;
1388 if (SND_SOC_DAPM_EVENT_ON(event))
1389 s = pinctrl_lookup_state(p, priv->active_state);
1391 s = pinctrl_lookup_state(p, priv->sleep_state);
1396 return pinctrl_select_state(p, s);
1398 EXPORT_SYMBOL_GPL(dapm_pinctrl_event);
1401 * Handler for clock supply widget.
1403 int dapm_clock_event(struct snd_soc_dapm_widget *w,
1404 struct snd_kcontrol *kcontrol, int event)
1409 soc_dapm_async_complete(w->dapm);
1411 if (SND_SOC_DAPM_EVENT_ON(event)) {
1412 return clk_prepare_enable(w->clk);
1414 clk_disable_unprepare(w->clk);
1420 EXPORT_SYMBOL_GPL(dapm_clock_event);
1422 static int dapm_widget_power_check(struct snd_soc_dapm_widget *w)
1424 if (w->power_checked)
1425 return w->new_power;
1430 w->new_power = w->power_check(w);
1432 w->power_checked = true;
1434 return w->new_power;
1437 /* Generic check to see if a widget should be powered. */
1438 static int dapm_generic_check_power(struct snd_soc_dapm_widget *w)
1442 DAPM_UPDATE_STAT(w, power_checks);
1444 in = is_connected_input_ep(w, NULL, NULL);
1445 out = is_connected_output_ep(w, NULL, NULL);
1446 return out != 0 && in != 0;
1449 /* Check to see if a power supply is needed */
1450 static int dapm_supply_check_power(struct snd_soc_dapm_widget *w)
1452 struct snd_soc_dapm_path *path;
1454 DAPM_UPDATE_STAT(w, power_checks);
1456 /* Check if one of our outputs is connected */
1457 snd_soc_dapm_widget_for_each_sink_path(w, path) {
1458 DAPM_UPDATE_STAT(w, neighbour_checks);
1463 if (path->connected &&
1464 !path->connected(path->source, path->sink))
1467 if (dapm_widget_power_check(path->sink))
1474 static int dapm_always_on_check_power(struct snd_soc_dapm_widget *w)
1476 return w->connected;
1479 static int dapm_seq_compare(struct snd_soc_dapm_widget *a,
1480 struct snd_soc_dapm_widget *b,
1485 BUILD_BUG_ON(ARRAY_SIZE(dapm_up_seq) != SND_SOC_DAPM_TYPE_COUNT);
1486 BUILD_BUG_ON(ARRAY_SIZE(dapm_down_seq) != SND_SOC_DAPM_TYPE_COUNT);
1491 sort = dapm_down_seq;
1493 WARN_ONCE(sort[a->id] == 0, "offset a->id %d not initialized\n", a->id);
1494 WARN_ONCE(sort[b->id] == 0, "offset b->id %d not initialized\n", b->id);
1496 if (sort[a->id] != sort[b->id])
1497 return sort[a->id] - sort[b->id];
1498 if (a->subseq != b->subseq) {
1500 return a->subseq - b->subseq;
1502 return b->subseq - a->subseq;
1504 if (a->reg != b->reg)
1505 return a->reg - b->reg;
1506 if (a->dapm != b->dapm)
1507 return (unsigned long)a->dapm - (unsigned long)b->dapm;
1512 /* Insert a widget in order into a DAPM power sequence. */
1513 static void dapm_seq_insert(struct snd_soc_dapm_widget *new_widget,
1514 struct list_head *list,
1517 struct snd_soc_dapm_widget *w;
1519 list_for_each_entry(w, list, power_list)
1520 if (dapm_seq_compare(new_widget, w, power_up) < 0) {
1521 list_add_tail(&new_widget->power_list, &w->power_list);
1525 list_add_tail(&new_widget->power_list, list);
1528 static void dapm_seq_check_event(struct snd_soc_card *card,
1529 struct snd_soc_dapm_widget *w, int event)
1531 const char *ev_name;
1535 case SND_SOC_DAPM_PRE_PMU:
1536 ev_name = "PRE_PMU";
1539 case SND_SOC_DAPM_POST_PMU:
1540 ev_name = "POST_PMU";
1543 case SND_SOC_DAPM_PRE_PMD:
1544 ev_name = "PRE_PMD";
1547 case SND_SOC_DAPM_POST_PMD:
1548 ev_name = "POST_PMD";
1551 case SND_SOC_DAPM_WILL_PMU:
1552 ev_name = "WILL_PMU";
1555 case SND_SOC_DAPM_WILL_PMD:
1556 ev_name = "WILL_PMD";
1560 WARN(1, "Unknown event %d\n", event);
1564 if (w->new_power != power)
1567 if (w->event && (w->event_flags & event)) {
1568 pop_dbg(w->dapm->dev, card->pop_time, "pop test : %s %s\n",
1570 soc_dapm_async_complete(w->dapm);
1571 trace_snd_soc_dapm_widget_event_start(w, event);
1572 ret = w->event(w, NULL, event);
1573 trace_snd_soc_dapm_widget_event_done(w, event);
1575 dev_err(w->dapm->dev, "ASoC: %s: %s event failed: %d\n",
1576 ev_name, w->name, ret);
1580 /* Apply the coalesced changes from a DAPM sequence */
1581 static void dapm_seq_run_coalesced(struct snd_soc_card *card,
1582 struct list_head *pending)
1584 struct snd_soc_dapm_context *dapm;
1585 struct snd_soc_dapm_widget *w;
1587 unsigned int value = 0;
1588 unsigned int mask = 0;
1590 w = list_first_entry(pending, struct snd_soc_dapm_widget, power_list);
1594 list_for_each_entry(w, pending, power_list) {
1595 WARN_ON(reg != w->reg || dapm != w->dapm);
1596 w->power = w->new_power;
1598 mask |= w->mask << w->shift;
1600 value |= w->on_val << w->shift;
1602 value |= w->off_val << w->shift;
1604 pop_dbg(dapm->dev, card->pop_time,
1605 "pop test : Queue %s: reg=0x%x, 0x%x/0x%x\n",
1606 w->name, reg, value, mask);
1608 /* Check for events */
1609 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMU);
1610 dapm_seq_check_event(card, w, SND_SOC_DAPM_PRE_PMD);
1614 /* Any widget will do, they should all be updating the
1618 pop_dbg(dapm->dev, card->pop_time,
1619 "pop test : Applying 0x%x/0x%x to %x in %dms\n",
1620 value, mask, reg, card->pop_time);
1621 pop_wait(card->pop_time);
1622 soc_dapm_update_bits(dapm, reg, mask, value);
1625 list_for_each_entry(w, pending, power_list) {
1626 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMU);
1627 dapm_seq_check_event(card, w, SND_SOC_DAPM_POST_PMD);
1631 /* Apply a DAPM power sequence.
1633 * We walk over a pre-sorted list of widgets to apply power to. In
1634 * order to minimise the number of writes to the device required
1635 * multiple widgets will be updated in a single write where possible.
1636 * Currently anything that requires more than a single write is not
1639 static void dapm_seq_run(struct snd_soc_card *card,
1640 struct list_head *list, int event, bool power_up)
1642 struct snd_soc_dapm_widget *w, *n;
1643 struct snd_soc_dapm_context *d;
1646 int cur_subseq = -1;
1647 int cur_reg = SND_SOC_NOPM;
1648 struct snd_soc_dapm_context *cur_dapm = NULL;
1655 sort = dapm_down_seq;
1657 list_for_each_entry_safe(w, n, list, power_list) {
1660 /* Do we need to apply any queued changes? */
1661 if (sort[w->id] != cur_sort || w->reg != cur_reg ||
1662 w->dapm != cur_dapm || w->subseq != cur_subseq) {
1663 if (!list_empty(&pending))
1664 dapm_seq_run_coalesced(card, &pending);
1666 if (cur_dapm && cur_dapm->component) {
1667 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1668 if (sort[i] == cur_sort)
1669 snd_soc_component_seq_notifier(
1670 cur_dapm->component,
1674 if (cur_dapm && w->dapm != cur_dapm)
1675 soc_dapm_async_complete(cur_dapm);
1677 INIT_LIST_HEAD(&pending);
1679 cur_subseq = INT_MIN;
1680 cur_reg = SND_SOC_NOPM;
1685 case snd_soc_dapm_pre:
1687 list_for_each_entry_safe_continue(w, n, list,
1690 if (event == SND_SOC_DAPM_STREAM_START)
1692 NULL, SND_SOC_DAPM_PRE_PMU);
1693 else if (event == SND_SOC_DAPM_STREAM_STOP)
1695 NULL, SND_SOC_DAPM_PRE_PMD);
1698 case snd_soc_dapm_post:
1700 list_for_each_entry_safe_continue(w, n, list,
1703 if (event == SND_SOC_DAPM_STREAM_START)
1705 NULL, SND_SOC_DAPM_POST_PMU);
1706 else if (event == SND_SOC_DAPM_STREAM_STOP)
1708 NULL, SND_SOC_DAPM_POST_PMD);
1712 /* Queue it up for application */
1713 cur_sort = sort[w->id];
1714 cur_subseq = w->subseq;
1717 list_move(&w->power_list, &pending);
1722 dev_err(w->dapm->dev,
1723 "ASoC: Failed to apply widget power: %d\n", ret);
1726 if (!list_empty(&pending))
1727 dapm_seq_run_coalesced(card, &pending);
1729 if (cur_dapm && cur_dapm->component) {
1730 for (i = 0; i < ARRAY_SIZE(dapm_up_seq); i++)
1731 if (sort[i] == cur_sort)
1732 snd_soc_component_seq_notifier(
1733 cur_dapm->component,
1737 for_each_card_dapms(card, d)
1738 soc_dapm_async_complete(d);
1741 static void dapm_widget_update(struct snd_soc_card *card)
1743 struct snd_soc_dapm_update *update = card->update;
1744 struct snd_soc_dapm_widget_list *wlist;
1745 struct snd_soc_dapm_widget *w = NULL;
1749 if (!update || !dapm_kcontrol_is_powered(update->kcontrol))
1752 wlist = dapm_kcontrol_get_wlist(update->kcontrol);
1754 for_each_dapm_widgets(wlist, wi, w) {
1755 if (w->event && (w->event_flags & SND_SOC_DAPM_PRE_REG)) {
1756 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_PRE_REG);
1758 dev_err(w->dapm->dev, "ASoC: %s DAPM pre-event failed: %d\n",
1766 ret = soc_dapm_update_bits(w->dapm, update->reg, update->mask,
1769 dev_err(w->dapm->dev, "ASoC: %s DAPM update failed: %d\n",
1772 if (update->has_second_set) {
1773 ret = soc_dapm_update_bits(w->dapm, update->reg2,
1774 update->mask2, update->val2);
1776 dev_err(w->dapm->dev,
1777 "ASoC: %s DAPM update failed: %d\n",
1781 for_each_dapm_widgets(wlist, wi, w) {
1782 if (w->event && (w->event_flags & SND_SOC_DAPM_POST_REG)) {
1783 ret = w->event(w, update->kcontrol, SND_SOC_DAPM_POST_REG);
1785 dev_err(w->dapm->dev, "ASoC: %s DAPM post-event failed: %d\n",
1791 /* Async callback run prior to DAPM sequences - brings to _PREPARE if
1792 * they're changing state.
1794 static void dapm_pre_sequence_async(void *data, async_cookie_t cookie)
1796 struct snd_soc_dapm_context *d = data;
1799 /* If we're off and we're not supposed to go into STANDBY */
1800 if (d->bias_level == SND_SOC_BIAS_OFF &&
1801 d->target_bias_level != SND_SOC_BIAS_OFF) {
1803 pm_runtime_get_sync(d->dev);
1805 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1808 "ASoC: Failed to turn on bias: %d\n", ret);
1811 /* Prepare for a transition to ON or away from ON */
1812 if ((d->target_bias_level == SND_SOC_BIAS_ON &&
1813 d->bias_level != SND_SOC_BIAS_ON) ||
1814 (d->target_bias_level != SND_SOC_BIAS_ON &&
1815 d->bias_level == SND_SOC_BIAS_ON)) {
1816 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_PREPARE);
1819 "ASoC: Failed to prepare bias: %d\n", ret);
1823 /* Async callback run prior to DAPM sequences - brings to their final
1826 static void dapm_post_sequence_async(void *data, async_cookie_t cookie)
1828 struct snd_soc_dapm_context *d = data;
1831 /* If we just powered the last thing off drop to standby bias */
1832 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1833 (d->target_bias_level == SND_SOC_BIAS_STANDBY ||
1834 d->target_bias_level == SND_SOC_BIAS_OFF)) {
1835 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_STANDBY);
1837 dev_err(d->dev, "ASoC: Failed to apply standby bias: %d\n",
1841 /* If we're in standby and can support bias off then do that */
1842 if (d->bias_level == SND_SOC_BIAS_STANDBY &&
1843 d->target_bias_level == SND_SOC_BIAS_OFF) {
1844 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_OFF);
1846 dev_err(d->dev, "ASoC: Failed to turn off bias: %d\n",
1850 pm_runtime_put(d->dev);
1853 /* If we just powered up then move to active bias */
1854 if (d->bias_level == SND_SOC_BIAS_PREPARE &&
1855 d->target_bias_level == SND_SOC_BIAS_ON) {
1856 ret = snd_soc_dapm_set_bias_level(d, SND_SOC_BIAS_ON);
1858 dev_err(d->dev, "ASoC: Failed to apply active bias: %d\n",
1863 static void dapm_widget_set_peer_power(struct snd_soc_dapm_widget *peer,
1864 bool power, bool connect)
1866 /* If a connection is being made or broken then that update
1867 * will have marked the peer dirty, otherwise the widgets are
1868 * not connected and this update has no impact. */
1872 /* If the peer is already in the state we're moving to then we
1873 * won't have an impact on it. */
1874 if (power != peer->power)
1875 dapm_mark_dirty(peer, "peer state change");
1878 static void dapm_widget_set_power(struct snd_soc_dapm_widget *w, bool power,
1879 struct list_head *up_list,
1880 struct list_head *down_list)
1882 struct snd_soc_dapm_path *path;
1884 if (w->power == power)
1887 trace_snd_soc_dapm_widget_power(w, power);
1889 /* If we changed our power state perhaps our neigbours changed
1892 snd_soc_dapm_widget_for_each_source_path(w, path)
1893 dapm_widget_set_peer_power(path->source, power, path->connect);
1895 /* Supplies can't affect their outputs, only their inputs */
1896 if (!w->is_supply) {
1897 snd_soc_dapm_widget_for_each_sink_path(w, path)
1898 dapm_widget_set_peer_power(path->sink, power,
1903 dapm_seq_insert(w, up_list, true);
1905 dapm_seq_insert(w, down_list, false);
1908 static void dapm_power_one_widget(struct snd_soc_dapm_widget *w,
1909 struct list_head *up_list,
1910 struct list_head *down_list)
1915 case snd_soc_dapm_pre:
1916 dapm_seq_insert(w, down_list, false);
1918 case snd_soc_dapm_post:
1919 dapm_seq_insert(w, up_list, true);
1923 power = dapm_widget_power_check(w);
1925 dapm_widget_set_power(w, power, up_list, down_list);
1930 static bool dapm_idle_bias_off(struct snd_soc_dapm_context *dapm)
1932 if (dapm->idle_bias_off)
1935 switch (snd_power_get_state(dapm->card->snd_card)) {
1936 case SNDRV_CTL_POWER_D3hot:
1937 case SNDRV_CTL_POWER_D3cold:
1938 return dapm->suspend_bias_off;
1947 * Scan each dapm widget for complete audio path.
1948 * A complete path is a route that has valid endpoints i.e.:-
1950 * o DAC to output pin.
1951 * o Input pin to ADC.
1952 * o Input pin to Output pin (bypass, sidetone)
1953 * o DAC to ADC (loopback).
1955 static int dapm_power_widgets(struct snd_soc_card *card, int event)
1957 struct snd_soc_dapm_widget *w;
1958 struct snd_soc_dapm_context *d;
1960 LIST_HEAD(down_list);
1961 ASYNC_DOMAIN_EXCLUSIVE(async_domain);
1962 enum snd_soc_bias_level bias;
1965 lockdep_assert_held(&card->dapm_mutex);
1967 trace_snd_soc_dapm_start(card);
1969 for_each_card_dapms(card, d) {
1970 if (dapm_idle_bias_off(d))
1971 d->target_bias_level = SND_SOC_BIAS_OFF;
1973 d->target_bias_level = SND_SOC_BIAS_STANDBY;
1978 /* Check which widgets we need to power and store them in
1979 * lists indicating if they should be powered up or down. We
1980 * only check widgets that have been flagged as dirty but note
1981 * that new widgets may be added to the dirty list while we
1984 list_for_each_entry(w, &card->dapm_dirty, dirty) {
1985 dapm_power_one_widget(w, &up_list, &down_list);
1988 for_each_card_widgets(card, w) {
1990 case snd_soc_dapm_pre:
1991 case snd_soc_dapm_post:
1992 /* These widgets always need to be powered */
1995 list_del_init(&w->dirty);
2002 /* Supplies and micbiases only bring the
2003 * context up to STANDBY as unless something
2004 * else is active and passing audio they
2005 * generally don't require full power. Signal
2006 * generators are virtual pins and have no
2007 * power impact themselves.
2010 case snd_soc_dapm_siggen:
2011 case snd_soc_dapm_vmid:
2013 case snd_soc_dapm_supply:
2014 case snd_soc_dapm_regulator_supply:
2015 case snd_soc_dapm_pinctrl:
2016 case snd_soc_dapm_clock_supply:
2017 case snd_soc_dapm_micbias:
2018 if (d->target_bias_level < SND_SOC_BIAS_STANDBY)
2019 d->target_bias_level = SND_SOC_BIAS_STANDBY;
2022 d->target_bias_level = SND_SOC_BIAS_ON;
2029 /* Force all contexts in the card to the same bias state if
2030 * they're not ground referenced.
2032 bias = SND_SOC_BIAS_OFF;
2033 for_each_card_dapms(card, d)
2034 if (d->target_bias_level > bias)
2035 bias = d->target_bias_level;
2036 for_each_card_dapms(card, d)
2037 if (!dapm_idle_bias_off(d))
2038 d->target_bias_level = bias;
2040 trace_snd_soc_dapm_walk_done(card);
2042 /* Run card bias changes at first */
2043 dapm_pre_sequence_async(&card->dapm, 0);
2044 /* Run other bias changes in parallel */
2045 for_each_card_dapms(card, d) {
2046 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2047 async_schedule_domain(dapm_pre_sequence_async, d,
2050 async_synchronize_full_domain(&async_domain);
2052 list_for_each_entry(w, &down_list, power_list) {
2053 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMD);
2056 list_for_each_entry(w, &up_list, power_list) {
2057 dapm_seq_check_event(card, w, SND_SOC_DAPM_WILL_PMU);
2060 /* Power down widgets first; try to avoid amplifying pops. */
2061 dapm_seq_run(card, &down_list, event, false);
2063 dapm_widget_update(card);
2066 dapm_seq_run(card, &up_list, event, true);
2068 /* Run all the bias changes in parallel */
2069 for_each_card_dapms(card, d) {
2070 if (d != &card->dapm && d->bias_level != d->target_bias_level)
2071 async_schedule_domain(dapm_post_sequence_async, d,
2074 async_synchronize_full_domain(&async_domain);
2075 /* Run card bias changes at last */
2076 dapm_post_sequence_async(&card->dapm, 0);
2078 /* do we need to notify any clients that DAPM event is complete */
2079 for_each_card_dapms(card, d) {
2083 ret = snd_soc_component_stream_event(d->component, event);
2088 pop_dbg(card->dev, card->pop_time,
2089 "DAPM sequencing finished, waiting %dms\n", card->pop_time);
2090 pop_wait(card->pop_time);
2092 trace_snd_soc_dapm_done(card);
2097 #ifdef CONFIG_DEBUG_FS
2098 static ssize_t dapm_widget_power_read_file(struct file *file,
2099 char __user *user_buf,
2100 size_t count, loff_t *ppos)
2102 struct snd_soc_dapm_widget *w = file->private_data;
2103 struct snd_soc_card *card = w->dapm->card;
2104 enum snd_soc_dapm_direction dir, rdir;
2108 struct snd_soc_dapm_path *p = NULL;
2110 buf = kmalloc(PAGE_SIZE, GFP_KERNEL);
2114 mutex_lock(&card->dapm_mutex);
2116 /* Supply widgets are not handled by is_connected_{input,output}_ep() */
2121 in = is_connected_input_ep(w, NULL, NULL);
2122 out = is_connected_output_ep(w, NULL, NULL);
2125 ret = scnprintf(buf, PAGE_SIZE, "%s: %s%s in %d out %d",
2126 w->name, w->power ? "On" : "Off",
2127 w->force ? " (forced)" : "", in, out);
2130 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2131 " - R%d(0x%x) mask 0x%x",
2132 w->reg, w->reg, w->mask << w->shift);
2134 ret += scnprintf(buf + ret, PAGE_SIZE - ret, "\n");
2137 ret += scnprintf(buf + ret, PAGE_SIZE - ret, " stream %s %s\n",
2139 w->active ? "active" : "inactive");
2141 snd_soc_dapm_for_each_direction(dir) {
2142 rdir = SND_SOC_DAPM_DIR_REVERSE(dir);
2143 snd_soc_dapm_widget_for_each_path(w, dir, p) {
2144 if (p->connected && !p->connected(p->source, p->sink))
2150 ret += scnprintf(buf + ret, PAGE_SIZE - ret,
2151 " %s \"%s\" \"%s\"\n",
2152 (rdir == SND_SOC_DAPM_DIR_IN) ? "in" : "out",
2153 p->name ? p->name : "static",
2154 p->node[rdir]->name);
2158 mutex_unlock(&card->dapm_mutex);
2160 ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
2166 static const struct file_operations dapm_widget_power_fops = {
2167 .open = simple_open,
2168 .read = dapm_widget_power_read_file,
2169 .llseek = default_llseek,
2172 static ssize_t dapm_bias_read_file(struct file *file, char __user *user_buf,
2173 size_t count, loff_t *ppos)
2175 struct snd_soc_dapm_context *dapm = file->private_data;
2178 switch (dapm->bias_level) {
2179 case SND_SOC_BIAS_ON:
2182 case SND_SOC_BIAS_PREPARE:
2183 level = "Prepare\n";
2185 case SND_SOC_BIAS_STANDBY:
2186 level = "Standby\n";
2188 case SND_SOC_BIAS_OFF:
2192 WARN(1, "Unknown bias_level %d\n", dapm->bias_level);
2193 level = "Unknown\n";
2197 return simple_read_from_buffer(user_buf, count, ppos, level,
2201 static const struct file_operations dapm_bias_fops = {
2202 .open = simple_open,
2203 .read = dapm_bias_read_file,
2204 .llseek = default_llseek,
2207 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2208 struct dentry *parent)
2210 if (!parent || IS_ERR(parent))
2213 dapm->debugfs_dapm = debugfs_create_dir("dapm", parent);
2215 debugfs_create_file("bias_level", 0444, dapm->debugfs_dapm, dapm,
2219 static void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2221 struct snd_soc_dapm_context *dapm = w->dapm;
2223 if (!dapm->debugfs_dapm || !w->name)
2226 debugfs_create_file(w->name, 0444, dapm->debugfs_dapm, w,
2227 &dapm_widget_power_fops);
2230 static void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2232 debugfs_remove_recursive(dapm->debugfs_dapm);
2233 dapm->debugfs_dapm = NULL;
2237 void snd_soc_dapm_debugfs_init(struct snd_soc_dapm_context *dapm,
2238 struct dentry *parent)
2242 static inline void dapm_debugfs_add_widget(struct snd_soc_dapm_widget *w)
2246 static inline void dapm_debugfs_cleanup(struct snd_soc_dapm_context *dapm)
2253 * soc_dapm_connect_path() - Connects or disconnects a path
2254 * @path: The path to update
2255 * @connect: The new connect state of the path. True if the path is connected,
2256 * false if it is disconnected.
2257 * @reason: The reason why the path changed (for debugging only)
2259 static void soc_dapm_connect_path(struct snd_soc_dapm_path *path,
2260 bool connect, const char *reason)
2262 if (path->connect == connect)
2265 path->connect = connect;
2266 dapm_mark_dirty(path->source, reason);
2267 dapm_mark_dirty(path->sink, reason);
2268 dapm_path_invalidate(path);
2271 /* test and update the power status of a mux widget */
2272 static int soc_dapm_mux_update_power(struct snd_soc_card *card,
2273 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e)
2275 struct snd_soc_dapm_path *path;
2279 lockdep_assert_held(&card->dapm_mutex);
2281 /* find dapm widget path assoc with kcontrol */
2282 dapm_kcontrol_for_each_path(path, kcontrol) {
2284 /* we now need to match the string in the enum to the path */
2285 if (e && !(strcmp(path->name, e->texts[mux])))
2290 soc_dapm_connect_path(path, connect, "mux update");
2294 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2299 int snd_soc_dapm_mux_update_power(struct snd_soc_dapm_context *dapm,
2300 struct snd_kcontrol *kcontrol, int mux, struct soc_enum *e,
2301 struct snd_soc_dapm_update *update)
2303 struct snd_soc_card *card = dapm->card;
2306 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2307 card->update = update;
2308 ret = soc_dapm_mux_update_power(card, kcontrol, mux, e);
2309 card->update = NULL;
2310 mutex_unlock(&card->dapm_mutex);
2312 snd_soc_dpcm_runtime_update(card);
2315 EXPORT_SYMBOL_GPL(snd_soc_dapm_mux_update_power);
2317 /* test and update the power status of a mixer or switch widget */
2318 static int soc_dapm_mixer_update_power(struct snd_soc_card *card,
2319 struct snd_kcontrol *kcontrol,
2320 int connect, int rconnect)
2322 struct snd_soc_dapm_path *path;
2325 lockdep_assert_held(&card->dapm_mutex);
2327 /* find dapm widget path assoc with kcontrol */
2328 dapm_kcontrol_for_each_path(path, kcontrol) {
2330 * Ideally this function should support any number of
2331 * paths and channels. But since kcontrols only come
2332 * in mono and stereo variants, we are limited to 2
2335 * The following code assumes for stereo controls the
2336 * first path (when 'found == 0') is the left channel,
2337 * and all remaining paths (when 'found == 1') are the
2340 * A stereo control is signified by a valid 'rconnect'
2341 * value, either 0 for unconnected, or >= 0 for connected.
2342 * This is chosen instead of using snd_soc_volsw_is_stereo,
2343 * so that the behavior of snd_soc_dapm_mixer_update_power
2344 * doesn't change even when the kcontrol passed in is
2347 * It passes 'connect' as the path connect status for
2348 * the left channel, and 'rconnect' for the right
2351 if (found && rconnect >= 0)
2352 soc_dapm_connect_path(path, rconnect, "mixer update");
2354 soc_dapm_connect_path(path, connect, "mixer update");
2359 dapm_power_widgets(card, SND_SOC_DAPM_STREAM_NOP);
2364 int snd_soc_dapm_mixer_update_power(struct snd_soc_dapm_context *dapm,
2365 struct snd_kcontrol *kcontrol, int connect,
2366 struct snd_soc_dapm_update *update)
2368 struct snd_soc_card *card = dapm->card;
2371 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2372 card->update = update;
2373 ret = soc_dapm_mixer_update_power(card, kcontrol, connect, -1);
2374 card->update = NULL;
2375 mutex_unlock(&card->dapm_mutex);
2377 snd_soc_dpcm_runtime_update(card);
2380 EXPORT_SYMBOL_GPL(snd_soc_dapm_mixer_update_power);
2382 static ssize_t dapm_widget_show_component(struct snd_soc_component *cmpnt,
2385 struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(cmpnt);
2386 struct snd_soc_dapm_widget *w;
2388 char *state = "not set";
2390 /* card won't be set for the dummy component, as a spot fix
2391 * we're checking for that case specifically here but in future
2392 * we will ensure that the dummy component looks like others.
2397 for_each_card_widgets(cmpnt->card, w) {
2398 if (w->dapm != dapm)
2401 /* only display widgets that burn power */
2403 case snd_soc_dapm_hp:
2404 case snd_soc_dapm_mic:
2405 case snd_soc_dapm_spk:
2406 case snd_soc_dapm_line:
2407 case snd_soc_dapm_micbias:
2408 case snd_soc_dapm_dac:
2409 case snd_soc_dapm_adc:
2410 case snd_soc_dapm_pga:
2411 case snd_soc_dapm_effect:
2412 case snd_soc_dapm_out_drv:
2413 case snd_soc_dapm_mixer:
2414 case snd_soc_dapm_mixer_named_ctl:
2415 case snd_soc_dapm_supply:
2416 case snd_soc_dapm_regulator_supply:
2417 case snd_soc_dapm_pinctrl:
2418 case snd_soc_dapm_clock_supply:
2420 count += sprintf(buf + count, "%s: %s\n",
2421 w->name, w->power ? "On":"Off");
2428 switch (snd_soc_dapm_get_bias_level(dapm)) {
2429 case SND_SOC_BIAS_ON:
2432 case SND_SOC_BIAS_PREPARE:
2435 case SND_SOC_BIAS_STANDBY:
2438 case SND_SOC_BIAS_OFF:
2442 count += sprintf(buf + count, "PM State: %s\n", state);
2447 /* show dapm widget status in sys fs */
2448 static ssize_t dapm_widget_show(struct device *dev,
2449 struct device_attribute *attr, char *buf)
2451 struct snd_soc_pcm_runtime *rtd = dev_get_drvdata(dev);
2452 struct snd_soc_dai *codec_dai;
2455 mutex_lock(&rtd->card->dapm_mutex);
2457 for_each_rtd_codec_dais(rtd, i, codec_dai) {
2458 struct snd_soc_component *cmpnt = codec_dai->component;
2460 count += dapm_widget_show_component(cmpnt, buf + count);
2463 mutex_unlock(&rtd->card->dapm_mutex);
2468 static DEVICE_ATTR_RO(dapm_widget);
2470 struct attribute *soc_dapm_dev_attrs[] = {
2471 &dev_attr_dapm_widget.attr,
2475 static void dapm_free_path(struct snd_soc_dapm_path *path)
2477 list_del(&path->list_node[SND_SOC_DAPM_DIR_IN]);
2478 list_del(&path->list_node[SND_SOC_DAPM_DIR_OUT]);
2479 list_del(&path->list_kcontrol);
2480 list_del(&path->list);
2484 void snd_soc_dapm_free_widget(struct snd_soc_dapm_widget *w)
2486 struct snd_soc_dapm_path *p, *next_p;
2487 enum snd_soc_dapm_direction dir;
2491 * remove source and sink paths associated to this widget.
2492 * While removing the path, remove reference to it from both
2493 * source and sink widgets so that path is removed only once.
2495 snd_soc_dapm_for_each_direction(dir) {
2496 snd_soc_dapm_widget_for_each_path_safe(w, dir, p, next_p)
2500 kfree(w->kcontrols);
2501 kfree_const(w->name);
2502 kfree_const(w->sname);
2506 void snd_soc_dapm_reset_cache(struct snd_soc_dapm_context *dapm)
2508 dapm->path_sink_cache.widget = NULL;
2509 dapm->path_source_cache.widget = NULL;
2512 /* free all dapm widgets and resources */
2513 static void dapm_free_widgets(struct snd_soc_dapm_context *dapm)
2515 struct snd_soc_dapm_widget *w, *next_w;
2517 for_each_card_widgets_safe(dapm->card, w, next_w) {
2518 if (w->dapm != dapm)
2520 snd_soc_dapm_free_widget(w);
2522 snd_soc_dapm_reset_cache(dapm);
2525 static struct snd_soc_dapm_widget *dapm_find_widget(
2526 struct snd_soc_dapm_context *dapm, const char *pin,
2527 bool search_other_contexts)
2529 struct snd_soc_dapm_widget *w;
2530 struct snd_soc_dapm_widget *fallback = NULL;
2532 for_each_card_widgets(dapm->card, w) {
2533 if (!strcmp(w->name, pin)) {
2534 if (w->dapm == dapm)
2541 if (search_other_contexts)
2547 static int snd_soc_dapm_set_pin(struct snd_soc_dapm_context *dapm,
2548 const char *pin, int status)
2550 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
2552 dapm_assert_locked(dapm);
2555 dev_err(dapm->dev, "ASoC: DAPM unknown pin %s\n", pin);
2559 if (w->connected != status) {
2560 dapm_mark_dirty(w, "pin configuration");
2561 dapm_widget_invalidate_input_paths(w);
2562 dapm_widget_invalidate_output_paths(w);
2565 w->connected = status;
2573 * snd_soc_dapm_sync_unlocked - scan and power dapm paths
2574 * @dapm: DAPM context
2576 * Walks all dapm audio paths and powers widgets according to their
2577 * stream or path usage.
2579 * Requires external locking.
2581 * Returns 0 for success.
2583 int snd_soc_dapm_sync_unlocked(struct snd_soc_dapm_context *dapm)
2586 * Suppress early reports (eg, jacks syncing their state) to avoid
2587 * silly DAPM runs during card startup.
2589 if (!dapm->card || !dapm->card->instantiated)
2592 return dapm_power_widgets(dapm->card, SND_SOC_DAPM_STREAM_NOP);
2594 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync_unlocked);
2597 * snd_soc_dapm_sync - scan and power dapm paths
2598 * @dapm: DAPM context
2600 * Walks all dapm audio paths and powers widgets according to their
2601 * stream or path usage.
2603 * Returns 0 for success.
2605 int snd_soc_dapm_sync(struct snd_soc_dapm_context *dapm)
2609 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
2610 ret = snd_soc_dapm_sync_unlocked(dapm);
2611 mutex_unlock(&dapm->card->dapm_mutex);
2614 EXPORT_SYMBOL_GPL(snd_soc_dapm_sync);
2616 static int dapm_update_dai_chan(struct snd_soc_dapm_path *p,
2617 struct snd_soc_dapm_widget *w,
2621 case snd_soc_dapm_aif_out:
2622 case snd_soc_dapm_aif_in:
2628 dev_dbg(w->dapm->dev, "%s DAI route %s -> %s\n",
2629 w->channel < channels ? "Connecting" : "Disconnecting",
2630 p->source->name, p->sink->name);
2632 if (w->channel < channels)
2633 soc_dapm_connect_path(p, true, "dai update");
2635 soc_dapm_connect_path(p, false, "dai update");
2640 static int dapm_update_dai_unlocked(struct snd_pcm_substream *substream,
2641 struct snd_pcm_hw_params *params,
2642 struct snd_soc_dai *dai)
2644 int dir = substream->stream;
2645 int channels = params_channels(params);
2646 struct snd_soc_dapm_path *p;
2647 struct snd_soc_dapm_widget *w;
2650 w = snd_soc_dai_get_widget(dai, dir);
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 for_each_card_widgets(dapm->card, w) {
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 for_each_card_widgets(card, w)
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 snd_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 snd_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 /* set to sleep_state when initializing */
3629 dapm_pinctrl_event(w, NULL, SND_SOC_DAPM_POST_PMD);
3631 case snd_soc_dapm_clock_supply:
3632 w->clk = devm_clk_get(dapm->dev, w->name);
3633 if (IS_ERR(w->clk)) {
3634 ret = PTR_ERR(w->clk);
3635 goto request_failed;
3642 prefix = soc_dapm_prefix(dapm);
3644 w->name = kasprintf(GFP_KERNEL, "%s %s", prefix, widget->name);
3646 w->name = kstrdup_const(widget->name, GFP_KERNEL);
3647 if (w->name == NULL) {
3648 kfree_const(w->sname);
3650 return ERR_PTR(-ENOMEM);
3654 case snd_soc_dapm_mic:
3655 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3656 w->power_check = dapm_generic_check_power;
3658 case snd_soc_dapm_input:
3659 if (!dapm->card->fully_routed)
3660 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3661 w->power_check = dapm_generic_check_power;
3663 case snd_soc_dapm_spk:
3664 case snd_soc_dapm_hp:
3665 w->is_ep = SND_SOC_DAPM_EP_SINK;
3666 w->power_check = dapm_generic_check_power;
3668 case snd_soc_dapm_output:
3669 if (!dapm->card->fully_routed)
3670 w->is_ep = SND_SOC_DAPM_EP_SINK;
3671 w->power_check = dapm_generic_check_power;
3673 case snd_soc_dapm_vmid:
3674 case snd_soc_dapm_siggen:
3675 w->is_ep = SND_SOC_DAPM_EP_SOURCE;
3676 w->power_check = dapm_always_on_check_power;
3678 case snd_soc_dapm_sink:
3679 w->is_ep = SND_SOC_DAPM_EP_SINK;
3680 w->power_check = dapm_always_on_check_power;
3683 case snd_soc_dapm_mux:
3684 case snd_soc_dapm_demux:
3685 case snd_soc_dapm_switch:
3686 case snd_soc_dapm_mixer:
3687 case snd_soc_dapm_mixer_named_ctl:
3688 case snd_soc_dapm_adc:
3689 case snd_soc_dapm_aif_out:
3690 case snd_soc_dapm_dac:
3691 case snd_soc_dapm_aif_in:
3692 case snd_soc_dapm_pga:
3693 case snd_soc_dapm_buffer:
3694 case snd_soc_dapm_scheduler:
3695 case snd_soc_dapm_effect:
3696 case snd_soc_dapm_src:
3697 case snd_soc_dapm_asrc:
3698 case snd_soc_dapm_encoder:
3699 case snd_soc_dapm_decoder:
3700 case snd_soc_dapm_out_drv:
3701 case snd_soc_dapm_micbias:
3702 case snd_soc_dapm_line:
3703 case snd_soc_dapm_dai_link:
3704 case snd_soc_dapm_dai_out:
3705 case snd_soc_dapm_dai_in:
3706 w->power_check = dapm_generic_check_power;
3708 case snd_soc_dapm_supply:
3709 case snd_soc_dapm_regulator_supply:
3710 case snd_soc_dapm_pinctrl:
3711 case snd_soc_dapm_clock_supply:
3712 case snd_soc_dapm_kcontrol:
3714 w->power_check = dapm_supply_check_power;
3717 w->power_check = dapm_always_on_check_power;
3722 INIT_LIST_HEAD(&w->list);
3723 INIT_LIST_HEAD(&w->dirty);
3724 /* see for_each_card_widgets */
3725 list_add_tail(&w->list, &dapm->card->widgets);
3727 snd_soc_dapm_for_each_direction(dir) {
3728 INIT_LIST_HEAD(&w->edges[dir]);
3729 w->endpoints[dir] = -1;
3732 /* machine layer sets up unconnected pins and insertions */
3737 if (ret != -EPROBE_DEFER)
3738 dev_err(dapm->dev, "ASoC: Failed to request %s: %d\n",
3741 kfree_const(w->sname);
3743 return ERR_PTR(ret);
3747 * snd_soc_dapm_new_control - create new dapm control
3748 * @dapm: DAPM context
3749 * @widget: widget template
3751 * Creates new DAPM control based upon a template.
3753 * Returns a widget pointer on success or an error pointer on failure
3755 struct snd_soc_dapm_widget *
3756 snd_soc_dapm_new_control(struct snd_soc_dapm_context *dapm,
3757 const struct snd_soc_dapm_widget *widget)
3759 struct snd_soc_dapm_widget *w;
3761 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
3762 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3763 mutex_unlock(&dapm->card->dapm_mutex);
3767 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_control);
3770 * snd_soc_dapm_new_controls - create new dapm controls
3771 * @dapm: DAPM context
3772 * @widget: widget array
3773 * @num: number of widgets
3775 * Creates new DAPM controls based upon the templates.
3777 * Returns 0 for success else error.
3779 int snd_soc_dapm_new_controls(struct snd_soc_dapm_context *dapm,
3780 const struct snd_soc_dapm_widget *widget,
3783 struct snd_soc_dapm_widget *w;
3787 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_INIT);
3788 for (i = 0; i < num; i++) {
3789 w = snd_soc_dapm_new_control_unlocked(dapm, widget);
3796 mutex_unlock(&dapm->card->dapm_mutex);
3799 EXPORT_SYMBOL_GPL(snd_soc_dapm_new_controls);
3802 snd_soc_dai_link_event_pre_pmu(struct snd_soc_dapm_widget *w,
3803 struct snd_pcm_substream *substream)
3805 struct snd_soc_dapm_path *path;
3806 struct snd_soc_dai *source, *sink;
3807 struct snd_soc_pcm_runtime *rtd = substream->private_data;
3808 struct snd_pcm_hw_params *params = NULL;
3809 const struct snd_soc_pcm_stream *config = NULL;
3810 struct snd_pcm_runtime *runtime = NULL;
3814 params = kzalloc(sizeof(*params), GFP_KERNEL);
3818 runtime = kzalloc(sizeof(*runtime), GFP_KERNEL);
3824 substream->runtime = runtime;
3826 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3827 snd_soc_dapm_widget_for_each_source_path(w, path) {
3828 source = path->source->priv;
3830 ret = snd_soc_dai_startup(source, substream);
3832 dev_err(source->dev,
3833 "ASoC: startup() failed: %d\n", ret);
3836 snd_soc_dai_activate(source, substream->stream);
3839 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3840 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3841 sink = path->sink->priv;
3843 ret = snd_soc_dai_startup(sink, substream);
3846 "ASoC: startup() failed: %d\n", ret);
3849 snd_soc_dai_activate(sink, substream->stream);
3852 substream->hw_opened = 1;
3855 * Note: getting the config after .startup() gives a chance to
3856 * either party on the link to alter the configuration if
3859 config = rtd->dai_link->params + rtd->params_select;
3860 if (WARN_ON(!config)) {
3861 dev_err(w->dapm->dev, "ASoC: link config missing\n");
3866 /* Be a little careful as we don't want to overflow the mask array */
3867 if (config->formats) {
3868 fmt = ffs(config->formats) - 1;
3870 dev_warn(w->dapm->dev, "ASoC: Invalid format %llx specified\n",
3877 snd_mask_set(hw_param_mask(params, SNDRV_PCM_HW_PARAM_FORMAT), fmt);
3878 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->min =
3880 hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE)->max =
3882 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->min
3883 = config->channels_min;
3884 hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS)->max
3885 = config->channels_max;
3887 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3888 snd_soc_dapm_widget_for_each_source_path(w, path) {
3889 source = path->source->priv;
3891 ret = snd_soc_dai_hw_params(source, substream, params);
3895 dapm_update_dai_unlocked(substream, params, source);
3898 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3899 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3900 sink = path->sink->priv;
3902 ret = snd_soc_dai_hw_params(sink, substream, params);
3906 dapm_update_dai_unlocked(substream, params, sink);
3909 runtime->format = params_format(params);
3910 runtime->subformat = params_subformat(params);
3911 runtime->channels = params_channels(params);
3912 runtime->rate = params_rate(params);
3919 static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w,
3920 struct snd_kcontrol *kcontrol, int event)
3922 struct snd_soc_dapm_path *path;
3923 struct snd_soc_dai *source, *sink;
3924 struct snd_pcm_substream *substream = w->priv;
3925 int ret = 0, saved_stream = substream->stream;
3927 if (WARN_ON(list_empty(&w->edges[SND_SOC_DAPM_DIR_OUT]) ||
3928 list_empty(&w->edges[SND_SOC_DAPM_DIR_IN])))
3932 case SND_SOC_DAPM_PRE_PMU:
3933 ret = snd_soc_dai_link_event_pre_pmu(w, substream);
3939 case SND_SOC_DAPM_POST_PMU:
3940 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3941 sink = path->sink->priv;
3943 ret = snd_soc_dai_digital_mute(sink, 0,
3944 SNDRV_PCM_STREAM_PLAYBACK);
3945 if (ret != 0 && ret != -ENOTSUPP)
3947 "ASoC: Failed to unmute: %d\n", ret);
3952 case SND_SOC_DAPM_PRE_PMD:
3953 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3954 sink = path->sink->priv;
3956 ret = snd_soc_dai_digital_mute(sink, 1,
3957 SNDRV_PCM_STREAM_PLAYBACK);
3958 if (ret != 0 && ret != -ENOTSUPP)
3960 "ASoC: Failed to mute: %d\n", ret);
3964 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3965 snd_soc_dapm_widget_for_each_source_path(w, path) {
3966 source = path->source->priv;
3967 snd_soc_dai_hw_free(source, substream);
3970 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3971 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3972 sink = path->sink->priv;
3973 snd_soc_dai_hw_free(sink, substream);
3976 substream->stream = SNDRV_PCM_STREAM_CAPTURE;
3977 snd_soc_dapm_widget_for_each_source_path(w, path) {
3978 source = path->source->priv;
3979 snd_soc_dai_deactivate(source, substream->stream);
3980 snd_soc_dai_shutdown(source, substream);
3983 substream->stream = SNDRV_PCM_STREAM_PLAYBACK;
3984 snd_soc_dapm_widget_for_each_sink_path(w, path) {
3985 sink = path->sink->priv;
3986 snd_soc_dai_deactivate(sink, substream->stream);
3987 snd_soc_dai_shutdown(sink, substream);
3991 case SND_SOC_DAPM_POST_PMD:
3992 kfree(substream->runtime);
3996 WARN(1, "Unknown event %d\n", event);
4001 /* Restore the substream direction */
4002 substream->stream = saved_stream;
4006 static int snd_soc_dapm_dai_link_get(struct snd_kcontrol *kcontrol,
4007 struct snd_ctl_elem_value *ucontrol)
4009 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4010 struct snd_soc_pcm_runtime *rtd = w->priv;
4012 ucontrol->value.enumerated.item[0] = rtd->params_select;
4017 static int snd_soc_dapm_dai_link_put(struct snd_kcontrol *kcontrol,
4018 struct snd_ctl_elem_value *ucontrol)
4020 struct snd_soc_dapm_widget *w = snd_kcontrol_chip(kcontrol);
4021 struct snd_soc_pcm_runtime *rtd = w->priv;
4023 /* Can't change the config when widget is already powered */
4027 if (ucontrol->value.enumerated.item[0] == rtd->params_select)
4030 if (ucontrol->value.enumerated.item[0] >= rtd->dai_link->num_params)
4033 rtd->params_select = ucontrol->value.enumerated.item[0];
4039 snd_soc_dapm_free_kcontrol(struct snd_soc_card *card,
4040 unsigned long *private_value,
4042 const char **w_param_text)
4046 devm_kfree(card->dev, (void *)*private_value);
4051 for (count = 0 ; count < num_params; count++)
4052 devm_kfree(card->dev, (void *)w_param_text[count]);
4053 devm_kfree(card->dev, w_param_text);
4056 static struct snd_kcontrol_new *
4057 snd_soc_dapm_alloc_kcontrol(struct snd_soc_card *card,
4059 const struct snd_soc_pcm_stream *params,
4060 int num_params, const char **w_param_text,
4061 unsigned long *private_value)
4063 struct soc_enum w_param_enum[] = {
4064 SOC_ENUM_SINGLE(0, 0, 0, NULL),
4066 struct snd_kcontrol_new kcontrol_dai_link[] = {
4067 SOC_ENUM_EXT(NULL, w_param_enum[0],
4068 snd_soc_dapm_dai_link_get,
4069 snd_soc_dapm_dai_link_put),
4071 struct snd_kcontrol_new *kcontrol_news;
4072 const struct snd_soc_pcm_stream *config = params;
4075 for (count = 0 ; count < num_params; count++) {
4076 if (!config->stream_name) {
4077 dev_warn(card->dapm.dev,
4078 "ASoC: anonymous config %d for dai link %s\n",
4080 w_param_text[count] =
4081 devm_kasprintf(card->dev, GFP_KERNEL,
4082 "Anonymous Configuration %d",
4085 w_param_text[count] = devm_kmemdup(card->dev,
4086 config->stream_name,
4087 strlen(config->stream_name) + 1,
4090 if (!w_param_text[count])
4091 goto outfree_w_param;
4095 w_param_enum[0].items = num_params;
4096 w_param_enum[0].texts = w_param_text;
4099 (unsigned long) devm_kmemdup(card->dev,
4100 (void *)(kcontrol_dai_link[0].private_value),
4101 sizeof(struct soc_enum), GFP_KERNEL);
4102 if (!*private_value) {
4103 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4105 goto outfree_w_param;
4107 kcontrol_dai_link[0].private_value = *private_value;
4108 /* duplicate kcontrol_dai_link on heap so that memory persists */
4109 kcontrol_news = devm_kmemdup(card->dev, &kcontrol_dai_link[0],
4110 sizeof(struct snd_kcontrol_new),
4112 if (!kcontrol_news) {
4113 dev_err(card->dev, "ASoC: Failed to create control for %s widget\n",
4115 goto outfree_w_param;
4117 return kcontrol_news;
4120 snd_soc_dapm_free_kcontrol(card, private_value, num_params, w_param_text);
4124 static struct snd_soc_dapm_widget *
4125 snd_soc_dapm_new_dai(struct snd_soc_card *card,
4126 struct snd_pcm_substream *substream,
4129 struct snd_soc_pcm_runtime *rtd = substream->private_data;
4130 struct snd_soc_dapm_widget template;
4131 struct snd_soc_dapm_widget *w;
4132 const char **w_param_text;
4133 unsigned long private_value = 0;
4137 link_name = devm_kasprintf(card->dev, GFP_KERNEL, "%s-%s",
4138 rtd->dai_link->name, id);
4140 return ERR_PTR(-ENOMEM);
4142 memset(&template, 0, sizeof(template));
4143 template.reg = SND_SOC_NOPM;
4144 template.id = snd_soc_dapm_dai_link;
4145 template.name = link_name;
4146 template.event = snd_soc_dai_link_event;
4147 template.event_flags = SND_SOC_DAPM_PRE_PMU | SND_SOC_DAPM_POST_PMU |
4148 SND_SOC_DAPM_PRE_PMD | SND_SOC_DAPM_POST_PMD;
4149 template.kcontrol_news = NULL;
4151 /* allocate memory for control, only in case of multiple configs */
4152 if (rtd->dai_link->num_params > 1) {
4153 w_param_text = devm_kcalloc(card->dev,
4154 rtd->dai_link->num_params,
4155 sizeof(char *), GFP_KERNEL);
4156 if (!w_param_text) {
4161 template.num_kcontrols = 1;
4162 template.kcontrol_news =
4163 snd_soc_dapm_alloc_kcontrol(card,
4165 rtd->dai_link->params,
4166 rtd->dai_link->num_params,
4167 w_param_text, &private_value);
4168 if (!template.kcontrol_news) {
4173 w_param_text = NULL;
4175 dev_dbg(card->dev, "ASoC: adding %s widget\n", link_name);
4177 w = snd_soc_dapm_new_control_unlocked(&card->dapm, &template);
4180 dev_err(rtd->dev, "ASoC: Failed to create %s widget: %d\n",
4182 goto outfree_kcontrol_news;
4185 w->priv = substream;
4189 outfree_kcontrol_news:
4190 devm_kfree(card->dev, (void *)template.kcontrol_news);
4191 snd_soc_dapm_free_kcontrol(card, &private_value,
4192 rtd->dai_link->num_params, w_param_text);
4194 devm_kfree(card->dev, link_name);
4195 return ERR_PTR(ret);
4198 int snd_soc_dapm_new_dai_widgets(struct snd_soc_dapm_context *dapm,
4199 struct snd_soc_dai *dai)
4201 struct snd_soc_dapm_widget template;
4202 struct snd_soc_dapm_widget *w;
4204 WARN_ON(dapm->dev != dai->dev);
4206 memset(&template, 0, sizeof(template));
4207 template.reg = SND_SOC_NOPM;
4209 if (dai->driver->playback.stream_name) {
4210 template.id = snd_soc_dapm_dai_in;
4211 template.name = dai->driver->playback.stream_name;
4212 template.sname = dai->driver->playback.stream_name;
4214 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4217 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4222 dai->playback_widget = w;
4225 if (dai->driver->capture.stream_name) {
4226 template.id = snd_soc_dapm_dai_out;
4227 template.name = dai->driver->capture.stream_name;
4228 template.sname = dai->driver->capture.stream_name;
4230 dev_dbg(dai->dev, "ASoC: adding %s widget\n",
4233 w = snd_soc_dapm_new_control_unlocked(dapm, &template);
4238 dai->capture_widget = w;
4244 int snd_soc_dapm_link_dai_widgets(struct snd_soc_card *card)
4246 struct snd_soc_dapm_widget *dai_w, *w;
4247 struct snd_soc_dapm_widget *src, *sink;
4248 struct snd_soc_dai *dai;
4250 /* For each DAI widget... */
4251 for_each_card_widgets(card, dai_w) {
4252 switch (dai_w->id) {
4253 case snd_soc_dapm_dai_in:
4254 case snd_soc_dapm_dai_out:
4260 /* let users know there is no DAI to link */
4262 dev_dbg(card->dev, "dai widget %s has no DAI\n",
4269 /* ...find all widgets with the same stream and link them */
4270 for_each_card_widgets(card, w) {
4271 if (w->dapm != dai_w->dapm)
4275 case snd_soc_dapm_dai_in:
4276 case snd_soc_dapm_dai_out:
4282 if (!w->sname || !strstr(w->sname, dai_w->sname))
4285 if (dai_w->id == snd_soc_dapm_dai_in) {
4292 dev_dbg(dai->dev, "%s -> %s\n", src->name, sink->name);
4293 snd_soc_dapm_add_path(w->dapm, src, sink, NULL, NULL);
4300 static void dapm_connect_dai_routes(struct snd_soc_dapm_context *dapm,
4301 struct snd_soc_dai *src_dai,
4302 struct snd_soc_dapm_widget *src,
4303 struct snd_soc_dapm_widget *dai,
4304 struct snd_soc_dai *sink_dai,
4305 struct snd_soc_dapm_widget *sink)
4307 dev_dbg(dapm->dev, "connected DAI link %s:%s -> %s:%s\n",
4308 src_dai->component->name, src->name,
4309 sink_dai->component->name, sink->name);
4312 snd_soc_dapm_add_path(dapm, src, dai, NULL, NULL);
4316 snd_soc_dapm_add_path(dapm, src, sink, NULL, NULL);
4319 static void dapm_connect_dai_pair(struct snd_soc_card *card,
4320 struct snd_soc_pcm_runtime *rtd,
4321 struct snd_soc_dai *codec_dai,
4322 struct snd_soc_dai *cpu_dai)
4324 struct snd_soc_dai_link *dai_link = rtd->dai_link;
4325 struct snd_soc_dapm_widget *dai, *codec, *playback_cpu, *capture_cpu;
4326 struct snd_pcm_substream *substream;
4327 struct snd_pcm_str *streams = rtd->pcm->streams;
4329 if (dai_link->params) {
4330 playback_cpu = cpu_dai->capture_widget;
4331 capture_cpu = cpu_dai->playback_widget;
4333 playback_cpu = cpu_dai->playback_widget;
4334 capture_cpu = cpu_dai->capture_widget;
4337 /* connect BE DAI playback if widgets are valid */
4338 codec = codec_dai->playback_widget;
4340 if (playback_cpu && codec) {
4341 if (dai_link->params && !dai_link->playback_widget) {
4342 substream = streams[SNDRV_PCM_STREAM_PLAYBACK].substream;
4343 dai = snd_soc_dapm_new_dai(card, substream, "playback");
4346 dai_link->playback_widget = dai;
4349 dapm_connect_dai_routes(&card->dapm, cpu_dai, playback_cpu,
4350 dai_link->playback_widget,
4355 /* connect BE DAI capture if widgets are valid */
4356 codec = codec_dai->capture_widget;
4358 if (codec && capture_cpu) {
4359 if (dai_link->params && !dai_link->capture_widget) {
4360 substream = streams[SNDRV_PCM_STREAM_CAPTURE].substream;
4361 dai = snd_soc_dapm_new_dai(card, substream, "capture");
4364 dai_link->capture_widget = dai;
4367 dapm_connect_dai_routes(&card->dapm, codec_dai, codec,
4368 dai_link->capture_widget,
4369 cpu_dai, capture_cpu);
4373 static void soc_dapm_dai_stream_event(struct snd_soc_dai *dai, int stream,
4376 struct snd_soc_dapm_widget *w;
4379 w = snd_soc_dai_get_widget(dai, stream);
4382 dapm_mark_dirty(w, "stream event");
4384 if (w->id == snd_soc_dapm_dai_in) {
4385 ep = SND_SOC_DAPM_EP_SOURCE;
4386 dapm_widget_invalidate_input_paths(w);
4388 ep = SND_SOC_DAPM_EP_SINK;
4389 dapm_widget_invalidate_output_paths(w);
4393 case SND_SOC_DAPM_STREAM_START:
4397 case SND_SOC_DAPM_STREAM_STOP:
4401 case SND_SOC_DAPM_STREAM_SUSPEND:
4402 case SND_SOC_DAPM_STREAM_RESUME:
4403 case SND_SOC_DAPM_STREAM_PAUSE_PUSH:
4404 case SND_SOC_DAPM_STREAM_PAUSE_RELEASE:
4410 void snd_soc_dapm_connect_dai_link_widgets(struct snd_soc_card *card)
4412 struct snd_soc_pcm_runtime *rtd;
4413 struct snd_soc_dai *codec_dai;
4416 /* for each BE DAI link... */
4417 for_each_card_rtds(card, rtd) {
4419 * dynamic FE links have no fixed DAI mapping.
4420 * CODEC<->CODEC links have no direct connection.
4422 if (rtd->dai_link->dynamic)
4425 if (rtd->num_cpus == 1) {
4426 for_each_rtd_codec_dais(rtd, i, codec_dai)
4427 dapm_connect_dai_pair(card, rtd, codec_dai,
4428 asoc_rtd_to_cpu(rtd, 0));
4429 } else if (rtd->num_codecs == rtd->num_cpus) {
4430 for_each_rtd_codec_dais(rtd, i, codec_dai)
4431 dapm_connect_dai_pair(card, rtd, codec_dai,
4432 asoc_rtd_to_cpu(rtd, i));
4435 "N cpus to M codecs link is not supported yet\n");
4440 static void soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4443 struct snd_soc_dai *dai;
4446 for_each_rtd_dais(rtd, i, dai)
4447 soc_dapm_dai_stream_event(dai, stream, event);
4449 dapm_power_widgets(rtd->card, event);
4453 * snd_soc_dapm_stream_event - send a stream event to the dapm core
4454 * @rtd: PCM runtime data
4455 * @stream: stream name
4456 * @event: stream event
4458 * Sends a stream event to the dapm core. The core then makes any
4459 * necessary widget power changes.
4461 * Returns 0 for success else error.
4463 void snd_soc_dapm_stream_event(struct snd_soc_pcm_runtime *rtd, int stream,
4466 struct snd_soc_card *card = rtd->card;
4468 mutex_lock_nested(&card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4469 soc_dapm_stream_event(rtd, stream, event);
4470 mutex_unlock(&card->dapm_mutex);
4473 void snd_soc_dapm_stream_stop(struct snd_soc_pcm_runtime *rtd, int stream)
4475 if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
4476 if (snd_soc_runtime_ignore_pmdown_time(rtd)) {
4477 /* powered down playback stream now */
4478 snd_soc_dapm_stream_event(rtd,
4479 SNDRV_PCM_STREAM_PLAYBACK,
4480 SND_SOC_DAPM_STREAM_STOP);
4482 /* start delayed pop wq here for playback streams */
4484 queue_delayed_work(system_power_efficient_wq,
4486 msecs_to_jiffies(rtd->pmdown_time));
4489 /* capture streams can be powered down now */
4490 snd_soc_dapm_stream_event(rtd, SNDRV_PCM_STREAM_CAPTURE,
4491 SND_SOC_DAPM_STREAM_STOP);
4494 EXPORT_SYMBOL_GPL(snd_soc_dapm_stream_stop);
4497 * snd_soc_dapm_enable_pin_unlocked - enable pin.
4498 * @dapm: DAPM context
4501 * Enables input/output pin and its parents or children widgets iff there is
4502 * a valid audio route and active audio stream.
4504 * Requires external locking.
4506 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4507 * do any widget power switching.
4509 int snd_soc_dapm_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4512 return snd_soc_dapm_set_pin(dapm, pin, 1);
4514 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin_unlocked);
4517 * snd_soc_dapm_enable_pin - enable pin.
4518 * @dapm: DAPM context
4521 * Enables input/output pin and its parents or children widgets iff there is
4522 * a valid audio route and active audio stream.
4524 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4525 * do any widget power switching.
4527 int snd_soc_dapm_enable_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4531 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4533 ret = snd_soc_dapm_set_pin(dapm, pin, 1);
4535 mutex_unlock(&dapm->card->dapm_mutex);
4539 EXPORT_SYMBOL_GPL(snd_soc_dapm_enable_pin);
4542 * snd_soc_dapm_force_enable_pin_unlocked - force a pin to be enabled
4543 * @dapm: DAPM context
4546 * Enables input/output pin regardless of any other state. This is
4547 * intended for use with microphone bias supplies used in microphone
4550 * Requires external locking.
4552 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4553 * do any widget power switching.
4555 int snd_soc_dapm_force_enable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4558 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4561 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4565 dev_dbg(w->dapm->dev, "ASoC: force enable pin %s\n", pin);
4566 if (!w->connected) {
4568 * w->force does not affect the number of input or output paths,
4569 * so we only have to recheck if w->connected is changed
4571 dapm_widget_invalidate_input_paths(w);
4572 dapm_widget_invalidate_output_paths(w);
4576 dapm_mark_dirty(w, "force enable");
4580 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin_unlocked);
4583 * snd_soc_dapm_force_enable_pin - force a pin to be enabled
4584 * @dapm: DAPM context
4587 * Enables input/output pin regardless of any other state. This is
4588 * intended for use with microphone bias supplies used in microphone
4591 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4592 * do any widget power switching.
4594 int snd_soc_dapm_force_enable_pin(struct snd_soc_dapm_context *dapm,
4599 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4601 ret = snd_soc_dapm_force_enable_pin_unlocked(dapm, pin);
4603 mutex_unlock(&dapm->card->dapm_mutex);
4607 EXPORT_SYMBOL_GPL(snd_soc_dapm_force_enable_pin);
4610 * snd_soc_dapm_disable_pin_unlocked - disable pin.
4611 * @dapm: DAPM context
4614 * Disables input/output pin and its parents or children widgets.
4616 * Requires external locking.
4618 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4619 * do any widget power switching.
4621 int snd_soc_dapm_disable_pin_unlocked(struct snd_soc_dapm_context *dapm,
4624 return snd_soc_dapm_set_pin(dapm, pin, 0);
4626 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin_unlocked);
4629 * snd_soc_dapm_disable_pin - disable pin.
4630 * @dapm: DAPM context
4633 * Disables input/output pin and its parents or children widgets.
4635 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4636 * do any widget power switching.
4638 int snd_soc_dapm_disable_pin(struct snd_soc_dapm_context *dapm,
4643 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4645 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4647 mutex_unlock(&dapm->card->dapm_mutex);
4651 EXPORT_SYMBOL_GPL(snd_soc_dapm_disable_pin);
4654 * snd_soc_dapm_nc_pin_unlocked - permanently disable pin.
4655 * @dapm: DAPM context
4658 * Marks the specified pin as being not connected, disabling it along
4659 * any parent or child widgets. At present this is identical to
4660 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4661 * additional things such as disabling controls which only affect
4662 * paths through the pin.
4664 * Requires external locking.
4666 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4667 * do any widget power switching.
4669 int snd_soc_dapm_nc_pin_unlocked(struct snd_soc_dapm_context *dapm,
4672 return snd_soc_dapm_set_pin(dapm, pin, 0);
4674 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin_unlocked);
4677 * snd_soc_dapm_nc_pin - permanently disable pin.
4678 * @dapm: DAPM context
4681 * Marks the specified pin as being not connected, disabling it along
4682 * any parent or child widgets. At present this is identical to
4683 * snd_soc_dapm_disable_pin() but in future it will be extended to do
4684 * additional things such as disabling controls which only affect
4685 * paths through the pin.
4687 * NOTE: snd_soc_dapm_sync() needs to be called after this for DAPM to
4688 * do any widget power switching.
4690 int snd_soc_dapm_nc_pin(struct snd_soc_dapm_context *dapm, const char *pin)
4694 mutex_lock_nested(&dapm->card->dapm_mutex, SND_SOC_DAPM_CLASS_RUNTIME);
4696 ret = snd_soc_dapm_set_pin(dapm, pin, 0);
4698 mutex_unlock(&dapm->card->dapm_mutex);
4702 EXPORT_SYMBOL_GPL(snd_soc_dapm_nc_pin);
4705 * snd_soc_dapm_get_pin_status - get audio pin status
4706 * @dapm: DAPM context
4707 * @pin: audio signal pin endpoint (or start point)
4709 * Get audio pin status - connected or disconnected.
4711 * Returns 1 for connected otherwise 0.
4713 int snd_soc_dapm_get_pin_status(struct snd_soc_dapm_context *dapm,
4716 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, true);
4719 return w->connected;
4723 EXPORT_SYMBOL_GPL(snd_soc_dapm_get_pin_status);
4726 * snd_soc_dapm_ignore_suspend - ignore suspend status for DAPM endpoint
4727 * @dapm: DAPM context
4728 * @pin: audio signal pin endpoint (or start point)
4730 * Mark the given endpoint or pin as ignoring suspend. When the
4731 * system is disabled a path between two endpoints flagged as ignoring
4732 * suspend will not be disabled. The path must already be enabled via
4733 * normal means at suspend time, it will not be turned on if it was not
4736 int snd_soc_dapm_ignore_suspend(struct snd_soc_dapm_context *dapm,
4739 struct snd_soc_dapm_widget *w = dapm_find_widget(dapm, pin, false);
4742 dev_err(dapm->dev, "ASoC: unknown pin %s\n", pin);
4746 w->ignore_suspend = 1;
4750 EXPORT_SYMBOL_GPL(snd_soc_dapm_ignore_suspend);
4753 * snd_soc_dapm_free - free dapm resources
4754 * @dapm: DAPM context
4756 * Free all dapm widgets and resources.
4758 void snd_soc_dapm_free(struct snd_soc_dapm_context *dapm)
4760 dapm_debugfs_cleanup(dapm);
4761 dapm_free_widgets(dapm);
4762 list_del(&dapm->list);
4764 EXPORT_SYMBOL_GPL(snd_soc_dapm_free);
4766 void snd_soc_dapm_init(struct snd_soc_dapm_context *dapm,
4767 struct snd_soc_card *card,
4768 struct snd_soc_component *component)
4771 dapm->component = component;
4772 dapm->bias_level = SND_SOC_BIAS_OFF;
4775 dapm->dev = component->dev;
4776 dapm->idle_bias_off = !component->driver->idle_bias_on,
4777 dapm->suspend_bias_off = component->driver->suspend_bias_off;
4779 dapm->dev = card->dev;
4782 INIT_LIST_HEAD(&dapm->list);
4783 /* see for_each_card_dapms */
4784 list_add(&dapm->list, &card->dapm_list);
4786 EXPORT_SYMBOL_GPL(snd_soc_dapm_init);
4788 static void soc_dapm_shutdown_dapm(struct snd_soc_dapm_context *dapm)
4790 struct snd_soc_card *card = dapm->card;
4791 struct snd_soc_dapm_widget *w;
4792 LIST_HEAD(down_list);
4795 mutex_lock(&card->dapm_mutex);
4797 for_each_card_widgets(dapm->card, w) {
4798 if (w->dapm != dapm)
4801 dapm_seq_insert(w, &down_list, false);
4807 /* If there were no widgets to power down we're already in
4811 if (dapm->bias_level == SND_SOC_BIAS_ON)
4812 snd_soc_dapm_set_bias_level(dapm,
4813 SND_SOC_BIAS_PREPARE);
4814 dapm_seq_run(card, &down_list, 0, false);
4815 if (dapm->bias_level == SND_SOC_BIAS_PREPARE)
4816 snd_soc_dapm_set_bias_level(dapm,
4817 SND_SOC_BIAS_STANDBY);
4820 mutex_unlock(&card->dapm_mutex);
4824 * snd_soc_dapm_shutdown - callback for system shutdown
4826 void snd_soc_dapm_shutdown(struct snd_soc_card *card)
4828 struct snd_soc_dapm_context *dapm;
4830 for_each_card_dapms(card, dapm) {
4831 if (dapm != &card->dapm) {
4832 soc_dapm_shutdown_dapm(dapm);
4833 if (dapm->bias_level == SND_SOC_BIAS_STANDBY)
4834 snd_soc_dapm_set_bias_level(dapm,
4839 soc_dapm_shutdown_dapm(&card->dapm);
4840 if (card->dapm.bias_level == SND_SOC_BIAS_STANDBY)
4841 snd_soc_dapm_set_bias_level(&card->dapm,
4845 /* Module information */
4846 MODULE_AUTHOR("Liam Girdwood, lrg@slimlogic.co.uk");
4847 MODULE_DESCRIPTION("Dynamic Audio Power Management core for ALSA SoC");
4848 MODULE_LICENSE("GPL");